loncom/interface/loncommon.pm - diff

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Diff for /loncom/interface/loncommon.pm between versions 1.283 and 1.1260

-version 1.283, 2005/11/08 03:08:15
+version 1.1260, 2016/11/13 14:22:15
  Line 58  use strict;
  use Apache::lonnet;
  use GDBM_File;
  use POSIX qw(strftime mktime);
- use Apache::Constants qw(:common :http :methods);
  use Apache::lonmenu();
+ use Apache::lonenc();
  use Apache::lonlocal;
+ use Apache::lonnet();
  use HTML::Entities;
+ use Apache::lonhtmlcommon();
+ use Apache::loncoursedata();
+ use Apache::lontexconvert();
+ use Apache::lonclonecourse();
+ use Apache::lonuserutils();
+ use Apache::lonuserstate();
+ use Apache::courseclassifier();
+ use LONCAPA qw(:DEFAULT :match);
+ use DateTime::TimeZone;
+ use DateTime::Locale;
+ use Encode();
+ use Text::Aspell;
+ use Authen::Captcha;
+ use Captcha::reCAPTCHA;
+ use JSON::DWIW;
+ use LWP::UserAgent;
+ use Crypt::DES;
+ use DynaLoader; # for Crypt::DES version
+ use MIME::Lite;
+ use MIME::Types;
+ # ---------------------------------------------- Designs
+ use vars qw(%defaultdesign);
  my $readit;
  ##
  ## Global Variables
  ##
+ # ----------------------------------------------- SSI with retries:
+ #
+ =pod
+ =head1 Server Side include with retries:
+ =over 4
+ =item * &ssi_with_retries(resource,retries form)
+ Performs an ssi with some number of retries.  Retries continue either
+ until the result is ok or until the retry count supplied by the
+ caller is exhausted.
+ Inputs:
+ =over 4
+ resource   - Identifies the resource to insert.
+ retries    - Count of the number of retries allowed.
+ form       - Hash that identifies the rendering options.
+ =back
+ Returns:
+ =over 4
+ content    - The content of the response.  If retries were exhausted this is empty.
+ response   - The response from the last attempt (which may or may not have been successful.
+ =back
+ =back
+ =cut
+ sub ssi_with_retries {
+     my ($resource, $retries, %form) = @_;
+     my $ok = 0;			# True if we got a good response.
+     my $content;
+     my $response;
+     # Try to get the ssi done. within the retries count:
+     do {
+ 	($content, $response) = &Apache::lonnet::ssi($resource, %form);
+ 	$ok      = $response->is_success;
+         if (!$ok) {
+             &Apache::lonnet::logthis("Failed ssi_with_retries on $resource: ".$response->is_success.', '.$response->code.', '.$response->message);
+         }
+ 	$retries--;
+     } while (!$ok && ($retries > 0));
+     if (!$ok) {
+ 	$content = '';		# On error return an empty content.
+     }
+     return ($content, $response);
+ }
  # ----------------------------------------------- Filetypes/Languages/Copyright
  my %language;
  my %supported_language;
+ my %supported_codes;
+ my %latex_language;		# For choosing hyphenation in <transl..>
+ my %latex_language_bykey;	# for choosing hyphenation from metadata
  my %cprtag;
  my %scprtag;
- my %fe; my %fd;
+ my %fe; my %fd; my %fm;
  my %category_extensions;
- # ---------------------------------------------- Designs
- my %designhash;
  # ---------------------------------------------- Thesaurus variables
  #
  # %Keywords:
- Line 105  BEGIN {
+ Line 199  BEGIN {
          my $langtabfile = $Apache::lonnet::perlvar{'lonTabDir'}.
                                     '/language.tab';
          if ( open(my $fh,"<$langtabfile") ) {
-             while (<$fh>) {
+             while (my $line = <$fh>) {
-                 next if /^\#/;
+                 next if ($line=~/^\#/);
-                 chomp;
+                 chomp($line);
-                 my ($key,$two,$country,$three,$enc,$val,$sup)=(split(/\t/,$_));
+                 my ($key,$code,$country,$three,$enc,$val,$sup,$latex)=(split(/\t/,$line));
                  $language{$key}=$val.' - '.$enc;
                  if ($sup) {
                      $supported_language{$key}=$sup;
+ 		    $supported_codes{$key}   = $code;
                  }
+ 		if ($latex) {
+ 		    $latex_language_bykey{$key} = $latex;
+ 		    $latex_language{$code} = $latex;
+ 		}
              }
              close($fh);
          }
- Line 122  BEGIN {
+ Line 221  BEGIN {
          my $copyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
                                    '/copyright.tab';
          if ( open (my $fh,"<$copyrightfile") ) {
-             while (<$fh>) {
+             while (my $line = <$fh>) {
-                 next if /^\#/;
+                 next if ($line=~/^\#/);
-                 chomp;
+                 chomp($line);
-                 my ($key,$val)=(split(/\s+/,$_,2));
+                 my ($key,$val)=(split(/\s+/,$line,2));
                  $cprtag{$key}=$val;
              }
              close($fh);
          }
      }
- # ------------------------------------------------------------------ source copyrights
+ # ----------------------------------------------------------- source copyrights
      {
          my $sourcecopyrightfile = $Apache::lonnet::perlvar{'lonIncludes'}.
                                    '/source_copyright.tab';
          if ( open (my $fh,"<$sourcecopyrightfile") ) {
-             while (<$fh>) {
+             while (my $line = <$fh>) {
-                 next if /^\#/;
+                 next if ($line =~ /^\#/);
-                 chomp;
+                 chomp($line);
-                 my ($key,$val)=(split(/\s+/,$_,2));
+                 my ($key,$val)=(split(/\s+/,$line,2));
                  $scprtag{$key}=$val;
              }
              close($fh);
          }
      }
- # -------------------------------------------------------------- domain designs
+ # -------------------------------------------------------------- default domain designs
-     my $filename;
      my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
-     opendir(DIR,$designdir);
+     my $designfile = $designdir.'/default.tab';
-     while ($filename=readdir(DIR)) {
+     if ( open (my $fh,"<$designfile") ) {
- 	if ($filename!~/\.tab$/) { next; }
+         while (my $line = <$fh>) {
- 	my ($domain)=($filename=~/^(\w+)\./);
+             next if ($line =~ /^\#/);
- 	{
+             chomp($line);
- 	    my $designfile = $designdir.'/'.$filename;
+             my ($key,$val)=(split(/\=/,$line));
- 	    if ( open (my $fh,"<$designfile") ) {
+             if ($val) { $defaultdesign{$key}=$val; }
- 		while (<$fh>) {
+         }
- 		    next if /^\#/;
+         close($fh);
- 		    chomp;
- 		    my ($key,$val)=(split(/\=/,$_));
- 		    if ($val) { $designhash{$domain.'.'.$key}=$val; }
- 		}
- 		close($fh);
- 	    }
- 	}
      }
-     closedir(DIR);
  # ------------------------------------------------------------- file categories
      {
          my $categoryfile = $Apache::lonnet::perlvar{'lonTabDir'}.
                                    '/filecategories.tab';
          if ( open (my $fh,"<$categoryfile") ) {
-             while (<$fh>) {
+ 	    while (my $line = <$fh>) {
-                 next if /^\#/;
+ 		next if ($line =~ /^\#/);
-                 chomp;
+ 		chomp($line);
-                 my ($extension,$category)=(split(/\s+/,$_,2));
+                 my ($extension,$category)=(split(/\s+/,$line,2));
                  push @{$category_extensions{lc($category)}},$extension;
              }
              close($fh);
- Line 191  BEGIN {
+ Line 278  BEGIN {
          my $typesfile = $Apache::lonnet::perlvar{'lonTabDir'}.
                 '/filetypes.tab';
          if ( open (my $fh,"<$typesfile") ) {
-             while (<$fh>) {
+             while (my $line = <$fh>) {
-                 next if (/^\#/);
+ 		next if ($line =~ /^\#/);
-                 chomp;
+ 		chomp($line);
-                 my ($ending,$emb,$descr)=split(/\s+/,$_,3);
+                 my ($ending,$emb,$mime,$descr)=split(/\s+/,$line,4);
                  if ($descr ne '') {
                      $fe{$ending}=lc($emb);
                      $fd{$ending}=$descr;
+                     if ($mime ne 'unk') { $fm{$ending}=$mime; }
                  }
              }
              close($fh);
          }
      }
      &Apache::lonnet::logthis(
-               "<font color=yellow>INFO: Read file types</font>");
+              "<span style='color:yellow;'>INFO: Read file types</span>");
      $readit=1;
      }  # end of unless($readit)
- Line 220  BEGIN {
+ Line 308  BEGIN {
  =over 4
- =item * browser_and_searcher_javascript ()
+ =item * &browser_and_searcher_javascript()
  X<browsing, javascript>X<searching, javascript>Returns a string
  containing javascript with two functions, C<openbrowser> and
  C<opensearcher>. Returned string does not contain E<lt>scriptE<gt>
  tags.
- =item * openbrowser(formname,elementname,only,omit) [javascript]
+ =item * &openbrowser(formname,elementname,only,omit) [javascript]
  inputs: formname, elementname, only, omit
- Line 240  with the given extension.  Can be a comm
+ Line 328  with the given extension.  Can be a comm
  Specifying 'omit' will restrict the browser to NOT displaying files
  with the given extension.  Can be a comma separated list.
- =item * opensearcher(formname, elementname) [javascript]
+ =item * &opensearcher(formname,elementname) [javascript]
  Inputs: formname, elementname
- Line 252  of the element the selection from the se
+ Line 340  of the element the selection from the se
  sub browser_and_searcher_javascript {
      my ($mode)=@_;
      if (!defined($mode)) { $mode='edit'; }
-     my $resurl=&lastresurl();
+     my $resurl=&escape_single(&lastresurl());
      return <<END;
  // <!-- BEGIN LON-CAPA Internal
      var editbrowser = null;
- Line 263  sub browser_and_searcher_javascript {
+ Line 351  sub browser_and_searcher_javascript {
          }
          url += 'catalogmode=interactive&';
          url += 'mode=$mode&';
+         url += 'inhibitmenu=yes&';
          url += 'form=' + formname + '&';
          if (only != null) {
              url += 'only=' + only + '&';
- Line 281  sub browser_and_searcher_javascript {
+ Line 370  sub browser_and_searcher_javascript {
  	}
          url += 'element=' + elementname + '';
          var title = 'Browser';
-         var options = 'scrollbars=1,resizable=1,menubar=1,location=1';
+         var options = 'scrollbars=1,resizable=1,menubar=0,toolbar=1,location=1';
          options += ',width=700,height=600';
          editbrowser = open(url,title,options,'1');
          editbrowser.focus();
- Line 302  sub browser_and_searcher_javascript {
+ Line 391  sub browser_and_searcher_javascript {
  	}
          url += 'element=' + elementname + '';
          var title = 'Search';
-         var options = 'scrollbars=1,resizable=1,menubar=0';
+         var options = 'scrollbars=1,resizable=1,menubar=0,toolbar=1,location=1';
          options += ',width=700,height=600';
          editsearcher = open(url,title,options,'1');
          editsearcher.focus();
- Line 324  sub storeresurl {
+ Line 413  sub storeresurl {
      unless ($resurl=~/^\/res/) { return 0; }
      $resurl=~s/\/$//;
      &Apache::lonnet::put('environment',{'lastresurl' => $resurl});
-     &Apache::lonnet::appenv('environment.lastresurl' => $resurl);
+     &Apache::lonnet::appenv({'environment.lastresurl' => $resurl});
      return 1;
  }
  sub studentbrowser_javascript {
     unless (
              (($env{'request.course.id'}) &&
-              (&Apache::lonnet::allowed('srm',$env{'request.course.id'})))
+              (&Apache::lonnet::allowed('srm',$env{'request.course.id'})
+ 	      || &Apache::lonnet::allowed('srm',$env{'request.course.id'}.
+ 					  '/'.$env{'request.course.sec'})
+ 	      ))
           || ($env{'request.role'}=~/^(au|dc|su)/)
            ) { return ''; }
     return (<<'ENDSTDBRW');
- <script type="text/javascript" language="Javascript" >
+ <script type="text/javascript" language="Javascript">
+ // <![CDATA[
      var stdeditbrowser;
-     function openstdbrowser(formname,uname,udom,roleflag) {
+     function openstdbrowser(formname,uname,udom,clicker,roleflag,ignorefilter,courseadvonly) {
          var url = '/adm/pickstudent?';
          var filter;
-         eval('filter=document.'+formname+'.'+uname+'.value;');
+ 	if (!ignorefilter) {
+ 	    eval('filter=document.'+formname+'.'+uname+'.value;');
+ 	}
          if (filter != null) {
             if (filter != '') {
                 url += 'filter='+filter+'&';
  	   }
          }
          url += 'form=' + formname + '&unameelement='+uname+
-                                     '&udomelement='+udom;
+                                     '&udomelement='+udom+
+                                     '&clicker='+clicker;
  	if (roleflag) { url+="&roles=1"; }
+         if (courseadvonly) { url+="&courseadvonly=1"; }
          var title = 'Student_Browser';
          var options = 'scrollbars=1,resizable=1,menubar=0';
          options += ',width=700,height=600';
          stdeditbrowser = open(url,title,options,'1');
          stdeditbrowser.focus();
      }
+ // ]]>
  </script>
  ENDSTDBRW
  }
+ sub resourcebrowser_javascript {
+    unless ($env{'request.course.id'}) { return ''; }
+    return (<<'ENDRESBRW');
+ <script type="text/javascript" language="Javascript">
+ // <![CDATA[
+     var reseditbrowser;
+     function openresbrowser(formname,reslink) {
+         var url = '/adm/pickresource?form='+formname+'&reslink='+reslink;
+         var title = 'Resource_Browser';
+         var options = 'scrollbars=1,resizable=1,menubar=0';
+         options += ',width=700,height=500';
+         reseditbrowser = open(url,title,options,'1');
+         reseditbrowser.focus();
+     }
+ // ]]>
+ </script>
+ ENDRESBRW
+ }
  sub selectstudent_link {
-    my ($form,$unameele,$udomele)=@_;
+    my ($form,$unameele,$udomele,$courseadvonly,$clickerid)=@_;
+    my $callargs = "'".&Apache::lonhtmlcommon::entity_encode($form)."','".
+                       &Apache::lonhtmlcommon::entity_encode($unameele)."','".
+                       &Apache::lonhtmlcommon::entity_encode($udomele)."'";
     if ($env{'request.course.id'}) {
-        unless (&Apache::lonnet::allowed('srm',$env{'request.course.id'})) {
+        if (!&Apache::lonnet::allowed('srm',$env{'request.course.id'})
+ 	   && !&Apache::lonnet::allowed('srm',$env{'request.course.id'}.
+ 					'/'.$env{'request.course.sec'})) {
  	   return '';
         }
-        return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
+        $callargs.=",'".&Apache::lonhtmlcommon::entity_encode($clickerid)."'";
-         '","'.$udomele.'");'."'>".&mt('Select User')."</a>";
+        if ($courseadvonly)  {
+            $callargs .= ",'',1,1";
+        }
+        return '<span class="LC_nobreak">'.
+               '<a href="javascript:openstdbrowser('.$callargs.');">'.
+               &mt('Select User').'</a></span>';
     }
     if ($env{'request.role'}=~/^(au|dc|su)/) {
-        return "<a href='".'javascript:openstdbrowser("'.$form.'","'.$unameele.
+        $callargs .= ",'',1";
-         '","'.$udomele.'",1);'."'>".&mt('Select User')."</a>";
+        return '<span class="LC_nobreak">'.
+               '<a href="javascript:openstdbrowser('.$callargs.');">'.
+               &mt('Select User').'</a></span>';
     }
     return '';
  }
+ sub selectresource_link {
+    my ($form,$reslink,$arg)=@_;
+    my $callargs = "'".&Apache::lonhtmlcommon::entity_encode($form)."','".
+                       &Apache::lonhtmlcommon::entity_encode($reslink)."'";
+    unless ($env{'request.course.id'}) { return $arg; }
+    return '<span class="LC_nobreak">'.
+               '<a href="javascript:openresbrowser('.$callargs.');">'.
+               $arg.'</a></span>';
+ }
+ sub authorbrowser_javascript {
+     return <<"ENDAUTHORBRW";
+ <script type="text/javascript" language="JavaScript">
+ // <![CDATA[
+ var stdeditbrowser;
+ function openauthorbrowser(formname,udom) {
+     var url = '/adm/pickauthor?';
+     url += 'form='+formname+'&roledom='+udom;
+     var title = 'Author_Browser';
+     var options = 'scrollbars=1,resizable=1,menubar=0';
+     options += ',width=700,height=600';
+     stdeditbrowser = open(url,title,options,'1');
+     stdeditbrowser.focus();
+ }
+ // ]]>
+ </script>
+ ENDAUTHORBRW
+ }
  sub coursebrowser_javascript {
-     my ($domainfilter)=@_;
+     my ($domainfilter,$sec_element,$formname,$role_element,$crstype,
-    return (<<ENDSTDBRW);
+         $credits_element,$instcode) = @_;
- <script type="text/javascript" language="Javascript" >
+     my $wintitle = 'Course_Browser';
-     var stdeditbrowser;
+     if ($crstype eq 'Community') {
-     function opencrsbrowser(formname,uname,udom,desc,extra_element) {
+         $wintitle = 'Community_Browser';
+     }
+     my $id_functions = &javascript_index_functions();
+     my $output = '
+ <script type="text/javascript" language="JavaScript">
+ // <![CDATA[
+     var stdeditbrowser;'."\n";
+     $output .= <<"ENDSTDBRW";
+     function opencrsbrowser(formname,uname,udom,desc,extra_element,multflag,type,type_elem) {
          var url = '/adm/pickcourse?';
-         var filter;
+         var formid = getFormIdByName(formname);
-         if (filter != null) {
+         var domainfilter = getDomainFromSelectbox(formname,udom);
-            if (filter != '') {
-                url += 'filter='+filter+'&';
- 	   }
-         }
-         var domainfilter='$domainfilter';
          if (domainfilter != null) {
             if (domainfilter != '') {
                 url += 'domainfilter='+domainfilter+'&';
- Line 397  sub coursebrowser_javascript {
+ Line 564  sub coursebrowser_javascript {
          url += 'form=' + formname + '&cnumelement='+uname+
  	                            '&cdomelement='+udom+
                                      '&cnameelement='+desc;
-         if (extra_element !=null && extra_element != '' && formname == 'rolechoice') {
+         if (extra_element !=null && extra_element != '') {
-             url += '&roleelement='+extra_element;
+             if (formname == 'rolechoice' || formname == 'studentform') {
-             if (domainfilter == null || domainfilter == '') {
+                 url += '&roleelement='+extra_element;
-                 url += '&domainfilter='+extra_element;
+                 if (domainfilter == null || domainfilter == '') {
+                     url += '&domainfilter='+extra_element;
+                 }
              }
+             else {
+                 if (formname == 'portform') {
+                     url += '&setroles='+extra_element;
+                 } else {
+                     if (formname == 'rules') {
+                         url += '&fixeddom='+extra_element;
+                     }
+                 }
+             }
          }
-         var title = 'Course_Browser';
+         if (type != null && type != '') {
+             url += '&type='+type;
+         }
+         if (type_elem != null && type_elem != '') {
+             url += '&typeelement='+type_elem;
+         }
+         if (formname == 'ccrs') {
+             var ownername = document.forms[formid].ccuname.value;
+             var ownerdom =  document.forms[formid].ccdomain.options[document.forms[formid].ccdomain.selectedIndex].value;
+             url += '&cloner='+ownername+':'+ownerdom;
+             if (type == 'Course') {
+                 url += '&crscode='+document.forms[formid].crscode.value;
+             }
+         }
+         if (formname == 'requestcrs') {
+             url += '&crsdom=$domainfilter&crscode=$instcode';
+         }
+         if (multflag !=null && multflag != '') {
+             url += '&multiple='+multflag;
+         }
+         var title = '$wintitle';
          var options = 'scrollbars=1,resizable=1,menubar=0';
          options += ',width=700,height=600';
          stdeditbrowser = open(url,title,options,'1');
          stdeditbrowser.focus();
      }
- </script>
+ $id_functions
  ENDSTDBRW
+     if (($sec_element ne '') || ($role_element ne '') || ($credits_element ne '')) {
+         $output .= &setsec_javascript($sec_element,$formname,$role_element,
+                                       $credits_element);
+     }
+     $output .= '
+ // ]]>
+ </script>';
+     return $output;
+ }
+ sub javascript_index_functions {
+     return <<"ENDJS";
+ function getFormIdByName(formname) {
+     for (var i=0;i<document.forms.length;i++) {
+         if (document.forms[i].name == formname) {
+             return i;
+         }
+     }
+     return -1;
+ }
+ function getIndexByName(formid,item) {
+     for (var i=0;i<document.forms[formid].elements.length;i++) {
+         if (document.forms[formid].elements[i].name == item) {
+             return i;
+         }
+     }
+     return -1;
+ }
+ function getDomainFromSelectbox(formname,udom) {
+     var userdom;
+     var formid = getFormIdByName(formname);
+     if (formid > -1) {
+         var domid = getIndexByName(formid,udom);
+         if (domid > -1) {
+             if (document.forms[formid].elements[domid].type == 'select-one') {
+                 userdom=document.forms[formid].elements[domid].options[document.forms[formid].elements[domid].selectedIndex].value;
+             }
+             if (document.forms[formid].elements[domid].type == 'hidden') {
+                 userdom=document.forms[formid].elements[domid].value;
+             }
+         }
+     }
+     return userdom;
+ }
+ ENDJS
+ }
+ sub javascript_array_indexof {
+     return <<ENDJS;
+ <script type="text/javascript" language="JavaScript">
+ // <![CDATA[
+ if (!Array.prototype.indexOf) {
+     Array.prototype.indexOf = function (searchElement /*, fromIndex */ ) {
+         "use strict";
+         if (this === void 0 || this === null) {
+             throw new TypeError();
+         }
+         var t = Object(this);
+         var len = t.length >>> 0;
+         if (len === 0) {
+             return -1;
+         }
+         var n = 0;
+         if (arguments.length > 0) {
+             n = Number(arguments[1]);
+             if (n !== n) { // shortcut for verifying if it is NaN
+                 n = 0;
+             } else if (n !== 0 && n !== (1 / 0) && n !== -(1 / 0)) {
+                 n = (n > 0 || -1) * Math.floor(Math.abs(n));
+             }
+         }
+         if (n >= len) {
+             return -1;
+         }
+         var k = n >= 0 ? n : Math.max(len - Math.abs(n), 0);
+         for (; k < len; k++) {
+             if (k in t && t[k] === searchElement) {
+                 return k;
+             }
+         }
+         return -1;
+     }
+ }
+ // ]]>
+ </script>
+ ENDJS
+ }
+ sub userbrowser_javascript {
+     my $id_functions = &javascript_index_functions();
+     return <<"ENDUSERBRW";
+ function openuserbrowser(formname,uname,udom,ulast,ufirst,uemail,hideudom,crsdom,caller) {
+     var url = '/adm/pickuser?';
+     var userdom = getDomainFromSelectbox(formname,udom);
+     if (userdom != null) {
+        if (userdom != '') {
+            url += 'srchdom='+userdom+'&';
+        }
+     }
+     url += 'form=' + formname + '&unameelement='+uname+
+                                 '&udomelement='+udom+
+                                 '&ulastelement='+ulast+
+                                 '&ufirstelement='+ufirst+
+                                 '&uemailelement='+uemail+
+                                 '&hideudomelement='+hideudom+
+                                 '&coursedom='+crsdom;
+     if ((caller != null) && (caller != undefined)) {
+         url += '&caller='+caller;
+     }
+     var title = 'User_Browser';
+     var options = 'scrollbars=1,resizable=1,menubar=0';
+     options += ',width=700,height=600';
+     var stdeditbrowser = open(url,title,options,'1');
+     stdeditbrowser.focus();
+ }
+ function fix_domain (formname,udom,origdom,uname) {
+     var formid = getFormIdByName(formname);
+     if (formid > -1) {
+         var unameid = getIndexByName(formid,uname);
+         var domid = getIndexByName(formid,udom);
+         var hidedomid = getIndexByName(formid,origdom);
+         if (hidedomid > -1) {
+             var fixeddom = document.forms[formid].elements[hidedomid].value;
+             var unameval = document.forms[formid].elements[unameid].value;
+             if ((fixeddom != '') && (fixeddom != undefined) && (fixeddom != null) && (unameval != '') && (unameval != undefined) && (unameval != null)) {
+                 if (domid > -1) {
+                     var slct = document.forms[formid].elements[domid];
+                     if (slct.type == 'select-one') {
+                         var i;
+                         for (i=0;i<slct.length;i++) {
+                             if (slct.options[i].value==fixeddom) { slct.selectedIndex=i; }
+                         }
+                     }
+                     if (slct.type == 'hidden') {
+                         slct.value = fixeddom;
+                     }
+                 }
+             }
+         }
+     }
+     return;
+ }
+ $id_functions
+ ENDUSERBRW
+ }
+ sub setsec_javascript {
+     my ($sec_element,$formname,$role_element,$credits_element) = @_;
+     my (@courserolenames,@communityrolenames,$rolestr,$courserolestr,
+         $communityrolestr);
+     if ($role_element ne '') {
+         my @allroles = ('st','ta','ep','in','ad');
+         foreach my $crstype ('Course','Community') {
+             if ($crstype eq 'Community') {
+                 foreach my $role (@allroles) {
+                     push(@communityrolenames,&Apache::lonnet::plaintext($role,$crstype));
+                 }
+                 push(@communityrolenames,&Apache::lonnet::plaintext('co'));
+             } else {
+                 foreach my $role (@allroles) {
+                     push(@courserolenames,&Apache::lonnet::plaintext($role,$crstype));
+                 }
+                 push(@courserolenames,&Apache::lonnet::plaintext('cc'));
+             }
+         }
+         $rolestr = '"'.join('","',@allroles).'"';
+         $courserolestr = '"'.join('","',@courserolenames).'"';
+         $communityrolestr = '"'.join('","',@communityrolenames).'"';
+     }
+     my $setsections = qq|
+ function setSect(sectionlist) {
+     var sectionsArray = new Array();
+     if ((sectionlist != '') && (typeof sectionlist != "undefined")) {
+         sectionsArray = sectionlist.split(",");
+     }
+     var numSections = sectionsArray.length;
+     document.$formname.$sec_element.length = 0;
+     if (numSections == 0) {
+         document.$formname.$sec_element.multiple=false;
+         document.$formname.$sec_element.size=1;
+         document.$formname.$sec_element.options[0] = new Option('No existing sections','',false,false)
+     } else {
+         if (numSections == 1) {
+             document.$formname.$sec_element.multiple=false;
+             document.$formname.$sec_element.size=1;
+             document.$formname.$sec_element.options[0] = new Option('Select','',true,true);
+             document.$formname.$sec_element.options[1] = new Option('No section','',false,false)
+             document.$formname.$sec_element.options[2] = new Option(sectionsArray[0],sectionsArray[0],false,false);
+         } else {
+             for (var i=0; i<numSections; i++) {
+                 document.$formname.$sec_element.options[i] = new Option(sectionsArray[i],sectionsArray[i],false,false)
+             }
+             document.$formname.$sec_element.multiple=true
+             if (numSections < 3) {
+                 document.$formname.$sec_element.size=numSections;
+             } else {
+                 document.$formname.$sec_element.size=3;
+             }
+             document.$formname.$sec_element.options[0].selected = false
+         }
+     }
+ }
+ function setRole(crstype) {
+ |;
+     if ($role_element eq '') {
+         $setsections .= '    return;
+ }
+ ';
+     } else {
+         $setsections .= qq|
+     var elementLength = document.$formname.$role_element.length;
+     var allroles = Array($rolestr);
+     var courserolenames = Array($courserolestr);
+     var communityrolenames = Array($communityrolestr);
+     if (elementLength != undefined) {
+         if (document.$formname.$role_element.options[5].value == 'cc') {
+             if (crstype == 'Course') {
+                 return;
+             } else {
+                 allroles[5] = 'co';
+                 for (var i=0; i<6; i++) {
+                     document.$formname.$role_element.options[i].value = allroles[i];
+                     document.$formname.$role_element.options[i].text = communityrolenames[i];
+                 }
+             }
+         } else {
+             if (crstype == 'Community') {
+                 return;
+             } else {
+                 allroles[5] = 'cc';
+                 for (var i=0; i<6; i++) {
+                     document.$formname.$role_element.options[i].value = allroles[i];
+                     document.$formname.$role_element.options[i].text = courserolenames[i];
+                 }
+             }
+         }
+     }
+     return;
+ }
+ |;
+     }
+     if ($credits_element) {
+         $setsections .= qq|
+ function setCredits(defaultcredits) {
+     document.$formname.$credits_element.value = defaultcredits;
+     return;
+ }
+ |;
+     }
+     return $setsections;
  }
  sub selectcourse_link {
-    my ($form,$unameele,$udomele,$desc,$extra_element)=@_;
+    my ($form,$unameele,$udomele,$desc,$extra_element,$multflag,$selecttype,
-     return "<a href='".'javascript:opencrsbrowser("'.$form.'","'.$unameele.
+        $typeelement) = @_;
-         '","'.$udomele.'","'.$desc.'","'.$extra_element.'");'."'>".&mt('Select Course')."</a>";
+    my $type = $selecttype;
+    my $linktext = &mt('Select Course');
+    if ($selecttype eq 'Community') {
+        $linktext = &mt('Select Community');
+    } elsif ($selecttype eq 'Placement') {
+        $linktext = &mt('Select Placement Test');
+    } elsif ($selecttype eq 'Course/Community') {
+        $linktext = &mt('Select Course/Community');
+        $type = '';
+    } elsif ($selecttype eq 'Select') {
+        $linktext = &mt('Select');
+        $type = '';
+    }
+    return '<span class="LC_nobreak">'
+          ."<a href='"
+          .'javascript:opencrsbrowser("'.$form.'","'.$unameele
+          .'","'.$udomele.'","'.$desc.'","'.$extra_element
+          .'","'.$multflag.'","'.$type.'","'.$typeelement.'");'
+          ."'>".$linktext.'</a>'
+          .'</span>';
+ }
+ sub selectauthor_link {
+    my ($form,$udom)=@_;
+    return '<a href="javascript:openauthorbrowser('."'$form','$udom'".');">'.
+           &mt('Select Author').'</a>';
+ }
+ sub selectuser_link {
+     my ($form,$unameelem,$domelem,$lastelem,$firstelem,$emailelem,$hdomelem,
+         $coursedom,$linktext,$caller) = @_;
+     return '<a href="javascript:openuserbrowser('."'$form','$unameelem','$domelem',".
+            "'$lastelem','$firstelem','$emailelem','$hdomelem','$coursedom','$caller'".
+            ');">'.$linktext.'</a>';
  }
  sub check_uncheck_jscript {
- Line 424  sub check_uncheck_jscript {
+ Line 918  sub check_uncheck_jscript {
  function checkAll(field) {
      if (field.length > 0) {
          for (i = 0; i < field.length; i++) {
-             field[i].checked = true ;
+             if (!field[i].disabled) {
+                 field[i].checked = true;
+             }
          }
      } else {
-         field.checked = true
+         if (!field.disabled) {
+             field.checked = true;
+         }
      }
  }
- Line 435  function uncheckAll(field) {
+ Line 933  function uncheckAll(field) {
      if (field.length > 0) {
          for (i = 0; i < field.length; i++) {
              field[i].checked = false ;
-         }     } else {
+         }
+     } else {
          field.checked = false ;
      }
  }
- Line 443  ENDSCRT
+ Line 942  ENDSCRT
      return $jscript;
  }
+ sub select_timezone {
+    my ($name,$selected,$onchange,$includeempty,$disabled)=@_;
+    my $output='<select name="'.$name.'" '.$onchange.$disabled.'>'."\n";
+    if ($includeempty) {
+        $output .= '<option value=""';
+        if (($selected eq '') || ($selected eq 'local')) {
+            $output .= ' selected="selected" ';
+        }
+        $output .= '> </option>';
+    }
+    my @timezones = DateTime::TimeZone->all_names;
+    foreach my $tzone (@timezones) {
+        $output.= '<option value="'.$tzone.'"';
+        if ($tzone eq $selected) {
+            $output.=' selected="selected"';
+        }
+        $output.=">$tzone</option>\n";
+    }
+    $output.="</select>";
+    return $output;
+ }
+ sub select_datelocale {
+     my ($name,$selected,$onchange,$includeempty,$disabled)=@_;
+     my $output='<select name="'.$name.'" '.$onchange.$disabled.'>'."\n";
+     if ($includeempty) {
+         $output .= '<option value=""';
+         if ($selected eq '') {
+             $output .= ' selected="selected" ';
+         }
+         $output .= '> </option>';
+     }
+     my @languages = &Apache::lonlocal::preferred_languages();
+     my (@possibles,%locale_names);
+     my @locales = DateTime::Locale->ids();
+     foreach my $id (@locales) {
+         if ($id ne '') {
+             my ($en_terr,$native_terr);
+             my $loc = DateTime::Locale->load($id);
+             if (ref($loc)) {
+                 $en_terr = $loc->name();
+                 $native_terr = $loc->native_name();
+                 if (grep(/^en$/,@languages) || !@languages) {
+                     if ($en_terr ne '') {
+                         $locale_names{$id} = '('.$en_terr.')';
+                     } elsif ($native_terr ne '') {
+                         $locale_names{$id} = $native_terr;
+                     }
+                 } else {
+                     if ($native_terr ne '') {
+                         $locale_names{$id} = $native_terr.' ';
+                     } elsif ($en_terr ne '') {
+                         $locale_names{$id} = '('.$en_terr.')';
+                     }
+                 }
+                 $locale_names{$id} = Encode::encode('UTF-8',$locale_names{$id});
+                 push(@possibles,$id);
+             }
+         }
+     }
+     foreach my $item (sort(@possibles)) {
+         $output.= '<option value="'.$item.'"';
+         if ($item eq $selected) {
+             $output.=' selected="selected"';
+         }
+         $output.=">$item";
+         if ($locale_names{$item} ne '') {
+             $output.='  '.$locale_names{$item};
+         }
+         $output.="</option>\n";
+     }
+     $output.="</select>";
+     return $output;
+ }
+ sub select_language {
+     my ($name,$selected,$includeempty,$noedit) = @_;
+     my %langchoices;
+     if ($includeempty) {
+         %langchoices = ('' => 'No language preference');
+     }
+     foreach my $id (&languageids()) {
+         my $code = &supportedlanguagecode($id);
+         if ($code) {
+             $langchoices{$code} = &plainlanguagedescription($id);
+         }
+     }
+     %langchoices = &Apache::lonlocal::texthash(%langchoices);
+     return &select_form($selected,$name,\%langchoices,undef,$noedit);
+ }
  =pod
- =item * linked_select_forms(...)
+ =item * &list_languages()
+ Returns an array reference that is suitable for use in language prompters.
+ Each array element is itself a two element array.  The first element
+ is the language code.  The second element a descsriptiuon of the
+ language itself.  This is suitable for use in e.g.
+ &Apache::edit::select_arg (once dereferenced that is).
+ =cut
+ sub list_languages {
+     my @lang_choices;
+     foreach my $id (&languageids()) {
+ 	my $code = &supportedlanguagecode($id);
+ 	if ($code) {
+ 	    my $selector    = $supported_codes{$id};
+ 	    my $description = &plainlanguagedescription($id);
+ 	    push (@lang_choices, [$selector, $description]);
+ 	}
+     }
+     return \@lang_choices;
+ }
+ =pod
+ =item * &linked_select_forms(...)
  linked_select_forms returns a string containing a <script></script> block
  and html for two <select> menus.  The select menus will be linked in that
  changing the value of the first menu will result in new values being placed
  in the second menu.  The values in the select menu will appear in alphabetical
- order.
+ order unless a defined order is provided.
  linked_select_forms takes the following ordered inputs:
- Line 470  linked_select_forms takes the following
+ Line 1086  linked_select_forms takes the following
  =item * $hashref, a reference to a hash containing the data for the menus.
+ =item * $menuorder, the order of values in the first menu
+ =item * $onchangefirst, additional javascript call to execute for an onchange
+         event for the first <select> tag
+ =item * $onchangesecond, additional javascript call to execute for an onchange
+         event for the second <select> tag
+ =item * $suffix, to differentiate separate uses of select2data javascript
+         objects in a page.
  =back
  Below is an example of such a hash.  Only the 'text', 'default', and
- Line 486  $menu{$choice1}->{'select2'}.
+ Line 1113  $menu{$choice1}->{'select2'}.
                             B2 => "Choice B2",
                             B3 => "Choice B3",
                             B4 => "Choice B4"
-                            }
+                            },
+                        order => ['B4','B3','B1','B2'],
                     },
                 A2 => { text =>"Choice A2" ,
                         default => "C2",
- Line 494  $menu{$choice1}->{'select2'}.
+ Line 1122  $menu{$choice1}->{'select2'}.
                             C1 => "Choice C1",
                             C2 => "Choice C2",
                             C3 => "Choice C3"
-                            }
+                            },
+                        order => ['C2','C1','C3'],
                     },
                 A3 => { text =>"Choice A3" ,
                         default => "D6",
- Line 506  $menu{$choice1}->{'select2'}.
+ Line 1135  $menu{$choice1}->{'select2'}.
                             D5 => "Choice D5",
                             D6 => "Choice D6",
                             D7 => "Choice D7"
-                            }
+                            },
+                        order => ['D4','D3','D2','D1','D7','D6','D5'],
                     }
                 );
- Line 518  sub linked_select_forms {
+ Line 1148  sub linked_select_forms {
          $firstdefault,
          $firstselectname,
          $secondselectname,
-         $hashref
+         $hashref,
+         $menuorder,
+         $onchangefirst,
+         $onchangesecond,
+         $suffix
          ) = @_;
      my $second = "document.$formname.$secondselectname";
      my $first = "document.$formname.$firstselectname";
      # output the javascript to do the changing
      my $result = '';
-     $result.="<script type=\"text/javascript\">\n";
+     $result.='<script type="text/javascript" language="JavaScript">'."\n";
-     $result.="var select2data = new Object();\n";
+     $result.="// <![CDATA[\n";
+     $result.="var select2data${suffix} = new Object();\n";
      $" = '","';
      my $debug = '';
      foreach my $s1 (sort(keys(%$hashref))) {
-         $result.="select2data.d_$s1 = new Object();\n";
+         $result.="select2data${suffix}['d_$s1'] = new Object();\n";
-         $result.="select2data.d_$s1.def = new String('".
+         $result.="select2data${suffix}['d_$s1'].def = new String('".
              $hashref->{$s1}->{'default'}."');\n";
-         $result.="select2data.d_$s1.values = new Array(";
+         $result.="select2data${suffix}['d_$s1'].values = new Array(";
          my @s2values = sort(keys( %{ $hashref->{$s1}->{'select2'} } ));
+         if (ref($hashref->{$s1}->{'order'}) eq 'ARRAY') {
+             @s2values = @{$hashref->{$s1}->{'order'}};
+         }
          $result.="\"@s2values\");\n";
-         $result.="select2data.d_$s1.texts = new Array(";
+         $result.="select2data${suffix}['d_$s1'].texts = new Array(";
          my @s2texts;
          foreach my $value (@s2values) {
              push @s2texts, $hashref->{$s1}->{'select2'}->{$value};
- Line 545  sub linked_select_forms {
+ Line 1183  sub linked_select_forms {
      $"=' ';
      $result.= <<"END";
- function select1_changed() {
+ function select1${suffix}_changed() {
      // Determine new choice
-     var newvalue = "d_" + $first.value;
+     var newvalue = "d_" + $first.options[$first.selectedIndex].value;
      // update select2
-     var values     = select2data[newvalue].values;
+     var values     = select2data${suffix}[newvalue].values;
-     var texts      = select2data[newvalue].texts;
+     var texts      = select2data${suffix}[newvalue].texts;
-     var select2def = select2data[newvalue].def;
+     var select2def = select2data${suffix}[newvalue].def;
      var i;
      // out with the old
-     for (i = 0; i < $second.options.length; i++) {
+     $second.options.length = 0;
-         $second.options[i] = null;
+     // in with the new
-     }
-     // in with the nuclear
      for (i=0;i<values.length; i++) {
          $second.options[i] = new Option(values[i]);
          $second.options[i].value = values[i];
- Line 567  function select1_changed() {
+ Line 1203  function select1_changed() {
          }
      }
  }
+ // ]]>
  </script>
  END
      # output the initial values for the selection lists
-     $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1_changed()\">\n";
+     $result .= "<select size=\"1\" name=\"$firstselectname\" onchange=\"select1${suffix}_changed();$onchangefirst\">\n";
-     foreach my $value (sort(keys(%$hashref))) {
+     my @order = sort(keys(%{$hashref}));
+     if (ref($menuorder) eq 'ARRAY') {
+         @order = @{$menuorder};
+     }
+     foreach my $value (@order) {
          $result.="    <option value=\"$value\" ";
          $result.=" selected=\"selected\" " if ($value eq $firstdefault);
          $result.=">".&mt($hashref->{$value}->{'text'})."</option>\n";
- Line 579  END
+ Line 1220  END
      $result .= "</select>\n";
      my %select2 = %{$hashref->{$firstdefault}->{'select2'}};
      $result .= $middletext;
-     $result .= "<select size=\"1\" name=\"$secondselectname\">\n";
+     $result .= "<select size=\"1\" name=\"$secondselectname\"";
+     if ($onchangesecond) {
+         $result .= ' onchange="'.$onchangesecond.'"';
+     }
+     $result .= ">\n";
      my $seconddefault = $hashref->{$firstdefault}->{'default'};
-     foreach my $value (sort(keys(%select2))) {
+     my @secondorder = sort(keys(%select2));
+     if (ref($hashref->{$firstdefault}->{'order'}) eq 'ARRAY') {
+         @secondorder = @{$hashref->{$firstdefault}->{'order'}};
+     }
+     foreach my $value (@secondorder) {
          $result.="    <option value=\"$value\" ";
          $result.=" selected=\"selected\" " if ($value eq $seconddefault);
          $result.=">".&mt($select2{$value})."</option>\n";
- Line 593  END
+ Line 1243  END
  =pod
- =item * help_open_topic($topic, $text, $stayOnPage, $width, $height)
+ =item * &help_open_topic($topic,$text,$stayOnPage,$width,$height,$imgid)
  Returns a string corresponding to an HTML link to the given help
  $topic, where $topic corresponds to the name of a .tex file in
- Line 611  a new window using Javascript. (Default
+ Line 1261  a new window using Javascript. (Default
  $width and $height are optional numerical parameters that will
  override the width and height of the popped up window, which may
  be useful for certain help topics with big pictures included.
+ $imgid is the id of the img tag used for the help icon. This may be
+ used in a javascript call to switch the image src.  See
+ lonhtmlcommon::htmlareaselectactive() for an example.
  =cut
  sub help_open_topic {
-     my ($topic, $text, $stayOnPage, $width, $height) = @_;
+     my ($topic, $text, $stayOnPage, $width, $height, $imgid) = @_;
      $text = "" if (not defined $text);
      $stayOnPage = 0 if (not defined $stayOnPage);
-     if ($env{'browser.interface'} eq 'textual' ||
+     $width = 500 if (not defined $width);
- 	$env{'environment.remote'} eq 'off' ) {
- 	$stayOnPage=1;
-     }
-     $width = 350 if (not defined $width);
      $height = 400 if (not defined $height);
      my $filename = $topic;
      $filename =~ s/ /_/g;
      my $template = "";
      my $link;
      $topic=~s/\W/\_/g;
-     if (!$stayOnPage)
+     if (!$stayOnPage) {
-     {
+ 	$link = "javascript:openMyModal('/adm/help/${filename}.hlp',$width,$height,'yes');";
- 	$link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
+     } elsif ($stayOnPage eq 'popup') {
-     }
+         $link = "javascript:void(open('/adm/help/${filename}.hlp', 'Help_for_$topic', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
-     else
+     } else {
-     {
  	$link = "/adm/help/${filename}.hlp";
      }
      # Add the text
-     if ($text ne "")
+     if ($text ne "") {
-     {
+ 	$template.='<span class="LC_help_open_topic">'
- 	$template .=
+                   .'<a target="_top" href="'.$link.'">'
-   "<table bgcolor='#3333AA' cellspacing='1' cellpadding='1' border='0'><tr>".
+                   .$text.'</a>';
-   "<td bgcolor='#5555FF'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
      }
-     # Add the graphic
+     # (Always) Add the graphic
      my $title = &mt('Online Help');
-     my $helpicon=&lonhttpdurl("/adm/help/gif/smallHelp.gif");
+     my $helpicon=&lonhttpdurl("/adm/help/help.png");
-     $template .= <<"ENDTEMPLATE";
+     if ($imgid ne '') {
-  <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help: $topic)" /></a>
+         $imgid = ' id="'.$imgid.'"';
- ENDTEMPLATE
+     }
-     if ($text ne '') { $template.='</td></tr></table>' };
+     $template.=' <a target="_top" href="'.$link.'" title="'.$title.'">'
+               .'<img src="'.$helpicon.'" border="0"'
+               .' alt="'.&mt('Help: [_1]',$topic).'"'
+               .' title="'.$title.'" style="vertical-align:middle;"'.$imgid
+               .' /></a>';
+     if ($text ne "") {
+         $template.='</span>';
+     }
      return $template;
  }
- Line 664  ENDTEMPLATE
+ Line 1319  ENDTEMPLATE
  # This is a quicky function for Latex cheatsheet editing, since it
  # appears in at least four places
  sub helpLatexCheatsheet {
-     my $other = shift;
+     my ($topic,$text,$not_author,$stayOnPage) = @_;
+     my $out;
      my $addOther = '';
-     if ($other) {
+     if ($topic) {
- 	$addOther = Apache::loncommon::help_open_topic($other, shift,
+ 	$addOther = '<span>'.&help_open_topic($topic,&mt($text),$stayOnPage, undef, 600).'</span> ';
- 						       undef, undef, 600) .
+     }
- 							   '</td><td>';
+     $out = '<span>' # Start cheatsheet
-     }
+ 	  .$addOther
-     return '<table><tr><td>'.
+           .'<span>'
- 	$addOther .
+ 	  .&help_open_topic('Greek_Symbols',&mt('Greek Symbols'),$stayOnPage,undef,600)
- 	&Apache::loncommon::help_open_topic("Greek_Symbols",'Greek Symbols',
+ 	  .'</span> <span>'
- 					    undef,undef,600)
+ 	  .&help_open_topic('Other_Symbols',&mt('Other Symbols'),$stayOnPage,undef,600)
- 	.'</td><td>'.
+ 	  .'</span>';
- 	&Apache::loncommon::help_open_topic("Other_Symbols",'Other Symbols',
+     unless ($not_author) {
- 					    undef,undef,600)
+         $out .= '<span>'
- 	.'</td></tr></table>';
+                .&help_open_topic('Authoring_Output_Tags',&mt('Output Tags'),$stayOnPage,undef,600)
+                .'</span> <span>'
+                .&help_open_topic('Authoring_Multilingual_Problems',&mt('How to create problems in different languages'),$stayOnPage,undef,600)
+ 	       .'</span>';
+     }
+     $out .= '</span>'; # End cheatsheet
+     return $out;
+ }
+ sub general_help {
+     my $helptopic='Student_Intro';
+     if ($env{'request.role'}=~/^(ca|au)/) {
+ 	$helptopic='Authoring_Intro';
+     } elsif ($env{'request.role'}=~/^(cc|co)/) {
+ 	$helptopic='Course_Coordination_Intro';
+     } elsif ($env{'request.role'}=~/^dc/) {
+         $helptopic='Domain_Coordination_Intro';
+     }
+     return $helptopic;
  }
- sub help_open_menu {
+ sub update_help_link {
-     my ($color,$topic,$component_help,$function,$faq,$bug,$stayOnPage,$width,$height,$text) = @_;
+     my ($topic,$component_help,$faq,$bug,$stayOnPage) = @_;
-     $text = "" if (not defined $text);
-     $stayOnPage = 0 if (not defined $stayOnPage);
-     if ($env{'browser.interface'} eq 'textual' ||
-         $env{'environment.remote'} eq 'off' ) {
-         $stayOnPage=1;
-     }
-     $width = 620 if (not defined $width);
-     $height = 600 if (not defined $height);
-     my $link='';
-     my $title = &mt('Get help');
      my $origurl = $ENV{'REQUEST_URI'};
      $origurl=~s|^/~|/priv/|;
      my $timestamp = time;
-     foreach (\$color,\$function,\$topic,\$component_help,\$faq,\$bug,\$origurl) {
+     foreach my $datum (\$topic,\$component_help,\$faq,\$bug,\$origurl) {
-         $$_ = &Apache::lonnet::escape($$_);
+         $$datum = &escape($$datum);
      }
-     if (!$stayOnPage) {
-          $link = "javascript:helpMenu('open')";
+     my $banner_link = "/adm/helpmenu?page=banner&amp;topic=$topic&amp;component_help=$component_help&amp;faq=$faq&amp;bug=$bug&amp;origurl=$origurl&amp;stamp=$timestamp&amp;stayonpage=$stayOnPage";
-     } else {
+     my $output .= <<"ENDOUTPUT";
-         $link = "javascript:helpMenu('display')";
+ <script type="text/javascript">
+ // <![CDATA[
+ banner_link = '$banner_link';
+ // ]]>
+ </script>
+ ENDOUTPUT
+     return $output;
+ }
+ # now just updates the help link and generates a blue icon
+ sub help_open_menu {
+     my ($topic,$component_help,$faq,$bug,$stayOnPage,$width,$height,$text)
+ 	= @_;
+     $stayOnPage = 1;
+     my $output;
+     if ($component_help) {
+ 	if (!$text) {
+ 	    $output=&help_open_topic($component_help,undef,$stayOnPage,
+ 				       $width,$height);
+ 	} else {
+ 	    my $help_text;
+ 	    $help_text=&unescape($topic);
+ 	    $output='<table><tr><td>'.
+ 		&help_open_topic($component_help,$help_text,$stayOnPage,
+ 				 $width,$height).'</td></tr></table>';
+ 	}
      }
-     my $banner_link = "/adm/helpmenu?page=banner&color=$color&function=$function&topic=$topic&component_help=$component_help&faq=$faq&bug=$bug&origurl=$origurl&stamp=$timestamp&stayonpage=$stayOnPage";
+     my $banner_link = &update_help_link($topic,$component_help,$faq,$bug,$stayOnPage);
-     my $details_link = "/adm/helpmenu?page=body&color=$color&function=$function&topic=$topic&component_help=$component_help&faq=$faq&bug=$bug&origurl=$origurl&stamp=$timestamp";
+     return $output.$banner_link;
-     my $template;
+ }
-     if ($text ne "") {
- 	$template .=
+ sub top_nav_help {
-   "<table bgcolor='#CC3300' cellspacing='1' cellpadding='1' border='0'><tr>".
+     my ($text) = @_;
-   "<td bgcolor='#CC6600'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
+     $text = &mt($text);
+     my $stay_on_page = 1;
+     my ($link,$banner_link);
+     unless ($env{'request.noversionuri'} =~ m{^/adm/helpmenu}) {
+         $link = ($stay_on_page) ? "javascript:helpMenu('display')"
+ 	                         : "javascript:helpMenu('open')";
+         $banner_link = &update_help_link(undef,undef,undef,undef,$stay_on_page);
+     }
+     my $title = &mt('Get help');
+     if ($link) {
+         return <<"END";
+ $banner_link
+ <a href="$link" title="$title">$text</a>
+ END
+     } else {
+         return '&nbsp;'.$text.'&nbsp;';
      }
+ }
+ sub help_menu_js {
+     my ($httphost) = @_;
+     my $stayOnPage = 1;
+     my $width = 620;
+     my $height = 600;
+     my $helptopic=&general_help();
+     my $details_link = $httphost.'/adm/help/'.$helptopic.'.hlp';
      my $nothing=&Apache::lonhtmlcommon::javascript_nothing();
-     my $html=&Apache::lonxml::xmlbegin();
+     my $start_page =
-     my $helpicon=&lonhttpdurl("/adm/lonIcons/helpgateway.gif");
+         &Apache::loncommon::start_page('Help Menu', undef,
-     $template .= <<"ENDTEMPLATE";
+ 				       {'frameset'    => 1,
-  <script type="text/javascript">
+ 					'js_ready'    => 1,
- // <!-- BEGIN LON-CAPA Internal
+                                         'use_absolute' => $httphost,
+ 					'add_entries' => {
+ 					    'border' => '0',
+ 					    'rows'   => "110,*",},});
+     my $end_page =
+         &Apache::loncommon::end_page({'frameset' => 1,
+ 				      'js_ready' => 1,});
+     my $template .= <<"ENDTEMPLATE";
+ <script type="text/javascript">
  // <![CDATA[
+ // <!-- BEGIN LON-CAPA Internal
+ var banner_link = '';
  function helpMenu(target) {
      var caller = this;
      if (target == 'open') {
- Line 738  function helpMenu(target) {
+ Line 1463  function helpMenu(target) {
      return;
  }
  function writeHelp(caller) {
-     caller.document.writeln('$html<head><title>LON-CAPA Help Menu</title><meta http-equiv="pragma" content="no-cache"></head>')
+     caller.document.writeln('$start_page\\n<frame name="bannerframe" src="'+banner_link+'" marginwidth="0" marginheight="0" frameborder="0">\\n');
-     caller.document.writeln("<frameset rows='105,*' border='0'><frame name='bannerframe'  src='$banner_link'><frame name='bodyframe' src='$details_link'></frameset>")
+     caller.document.writeln('<frame name="bodyframe" src="$details_link" marginwidth="0" marginheight="0" frameborder="0">\\n$end_page');
-     caller.document.writeln("</html>")
+     caller.document.close();
-     caller.document.close()
+     caller.focus();
-     caller.focus()
  }
- // ]]>
  // END LON-CAPA Internal -->
-  </script>
+ // ]]>
-  <a href="$link" title="$title"><img src="$helpicon" border="0" alt="(Help Menu)" /></a>
+ </script>
  ENDTEMPLATE
-     if ($component_help) {
- 	if (!$text) {
- 	    $template=&help_open_topic($component_help,undef,$stayOnPage,
- 				       $width,$height).' '.$template;
- 	} else {
- 	    my $help_text;
- 	    $help_text=&Apache::lonnet::unescape($topic);
- 	    $template='<table><tr><td>'.
- 		&help_open_topic($component_help,$help_text,$stayOnPage,
- 				 $width,$height).'</td><td>'.$template.
- 				 '</td></tr></table>';
- 	}
-     }
-     if ($text ne '') { $template.='</td></tr></table>' };
      return $template;
  }
- Line 771  sub help_open_bug {
+ Line 1480  sub help_open_bug {
      unless ($env{'user.adv'}) { return ''; }
      unless ($Apache::lonnet::perlvar{'BugzillaHost'}) { return ''; }
      $text = "" if (not defined $text);
-     $stayOnPage = 0 if (not defined $stayOnPage);
-     if ($env{'browser.interface'} eq 'textual' ||
- 	$env{'environment.remote'} eq 'off' ) {
  	$stayOnPage=1;
-     }
      $width = 600 if (not defined $width);
      $height = 600 if (not defined $height);
      $topic=~s/\W+/\+/g;
      my $link='';
      my $template='';
-     my $url=$Apache::lonnet::perlvar{'BugzillaHost'}.'enter_bug.cgi?product=LON-CAPA&bug_file_loc='.
+     my $url=$Apache::lonnet::perlvar{'BugzillaHost'}.'enter_bug.cgi?product=LON-CAPA&amp;bug_file_loc='.
- 	&Apache::lonnet::escape($ENV{'REQUEST_URI'}).'&component='.$topic;
+ 	&escape($ENV{'REQUEST_URI'}).'&amp;component='.$topic;
      if (!$stayOnPage)
      {
  	$link = "javascript:void(open('$url', 'Bugzilla', 'menubar=0,toolbar=1,scrollbars=1,width=$width,height=$height,resizable=yes'))";
- Line 797  sub help_open_bug {
+ Line 1502  sub help_open_bug {
      {
  	$template .=
    "<table bgcolor='#AA3333' cellspacing='1' cellpadding='1' border='0'><tr>".
-   "<td bgcolor='#FF5555'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
+   "<td bgcolor='#FF5555'><a target=\"_top\" href=\"$link\"><span style=\"color:#FFFFFF;font-size:10pt;\">$text</span></a>";
      }
      # Add the graphic
      my $title = &mt('Report a Bug');
      my $bugicon=&lonhttpdurl("/adm/lonMisc/smallBug.gif");
      $template .= <<"ENDTEMPLATE";
-  <a href="$link" title="$title"><img src="$bugicon" border="0" alt="(Bug: $topic)" /></a>
+  <a target="_top" href="$link" title="$title"><img src="$bugicon" border="0" alt="(Bug: $topic)" /></a>
  ENDTEMPLATE
      if ($text ne '') { $template.='</td></tr></table>' };
      return $template;
- Line 816  sub help_open_faq {
+ Line 1521  sub help_open_faq {
      unless ($env{'user.adv'}) { return ''; }
      unless ($Apache::lonnet::perlvar{'FAQHost'}) { return ''; }
      $text = "" if (not defined $text);
-     $stayOnPage = 0 if (not defined $stayOnPage);
-     if ($env{'browser.interface'} eq 'textual' ||
- 	$env{'environment.remote'} eq 'off' ) {
  	$stayOnPage=1;
-     }
      $width = 350 if (not defined $width);
      $height = 400 if (not defined $height);
- Line 842  sub help_open_faq {
+ Line 1543  sub help_open_faq {
      {
  	$template .=
    "<table bgcolor='#337733' cellspacing='1' cellpadding='1' border='0'><tr>".
-   "<td bgcolor='#448844'><a href=\"$link\"><font color='#FFFFFF' size='2'>$text</font></a>";
+   "<td bgcolor='#448844'><a target=\"_top\" href=\"$link\"><span style=\"color:#FFFFFF; font-size:10pt;\">$text</span></a>";
      }
      # Add the graphic
      my $title = &mt('View the FAQ');
      my $faqicon=&lonhttpdurl("/adm/lonMisc/smallFAQ.gif");
      $template .= <<"ENDTEMPLATE";
-  <a href="$link" title="$title"><img src="$faqicon" border="0" alt="(FAQ: $topic)" /></a>
+  <a target="_top" href="$link" title="$title"><img src="$faqicon" border="0" alt="(FAQ: $topic)" /></a>
  ENDTEMPLATE
      if ($text ne '') { $template.='</td></tr></table>' };
      return $template;
- Line 861  ENDTEMPLATE
+ Line 1562  ENDTEMPLATE
  =pod
- =item * change_content_javascript():
+ =item * &change_content_javascript():
  This and the next function allow you to create small sections of an
  otherwise static HTML page that you can update on the fly with
- Line 916  DOMBASED
+ Line 1617  DOMBASED
  =pod
- =item * changable_area($name, $origContent):
+ =item * &changable_area($name,$origContent):
  This provides a "changable area" that can be modified on the fly via
  the Javascript code provided in C<change_content_javascript>. $name is
- Line 940  sub changable_area {
+ Line 1641  sub changable_area {
  =pod
+ =item * &viewport_geometry_js
+ Provides javascript object (Geometry) which can provide information about the viewport geometry for the client browser.
+ =cut
+ sub viewport_geometry_js {
+     return <<"GEOMETRY";
+ var Geometry = {};
+ function init_geometry() {
+     if (Geometry.init) { return };
+     Geometry.init=1;
+     if (window.innerHeight) {
+         Geometry.getViewportHeight   = function() { return window.innerHeight; };
+         Geometry.getViewportWidth   = function() { return window.innerWidth; };
+         Geometry.getHorizontalScroll = function() { return window.pageXOffset; };
+         Geometry.getVerticalScroll   = function() { return window.pageYOffset; };
+     }
+     else if (document.documentElement && document.documentElement.clientHeight) {
+         Geometry.getViewportHeight =
+             function() { return document.documentElement.clientHeight; };
+         Geometry.getViewportWidth =
+             function() { return document.documentElement.clientWidth; };
+         Geometry.getHorizontalScroll =
+             function() { return document.documentElement.scrollLeft; };
+         Geometry.getVerticalScroll =
+             function() { return document.documentElement.scrollTop; };
+     }
+     else if (document.body.clientHeight) {
+         Geometry.getViewportHeight =
+             function() { return document.body.clientHeight; };
+         Geometry.getViewportWidth =
+             function() { return document.body.clientWidth; };
+         Geometry.getHorizontalScroll =
+             function() { return document.body.scrollLeft; };
+         Geometry.getVerticalScroll =
+             function() { return document.body.scrollTop; };
+     }
+ }
+ GEOMETRY
+ }
+ =pod
+ =item * &viewport_size_js()
+ Provides a javascript function to set values of two form elements - width and height (elements are passed in as arguments to the javascript function) to the dimensions of the user's browser window.
+ =cut
+ sub viewport_size_js {
+     my $geometry = &viewport_geometry_js();
+     return <<"DIMS";
+ $geometry
+ function getViewportDims(width,height) {
+     init_geometry();
+     width.value = Geometry.getViewportWidth();
+     height.value = Geometry.getViewportHeight();
+     return;
+ }
+ DIMS
+ }
+ =pod
+ =item * &resize_textarea_js()
+ emits the needed javascript to resize a textarea to be as big as possible
+ creates a function resize_textrea that takes two IDs first should be
+ the id of the element to resize, second should be the id of a div that
+ surrounds everything that comes after the textarea, this routine needs
+ to be attached to the <body> for the onload and onresize events.
  =back
- =head1 Excel and CSV file utility routines
+ =cut
- =over 4
+ sub resize_textarea_js {
+     my $geometry = &viewport_geometry_js();
+     return <<"RESIZE";
+     <script type="text/javascript">
+ // <![CDATA[
+ $geometry
+ function getX(element) {
+     var x = 0;
+     while (element) {
+ 	x += element.offsetLeft;
+ 	element = element.offsetParent;
+     }
+     return x;
+ }
+ function getY(element) {
+     var y = 0;
+     while (element) {
+ 	y += element.offsetTop;
+ 	element = element.offsetParent;
+     }
+     return y;
+ }
+ function resize_textarea(textarea_id,bottom_id) {
+     init_geometry();
+     var textarea        = document.getElementById(textarea_id);
+     //alert(textarea);
+     var textarea_top    = getY(textarea);
+     var textarea_height = textarea.offsetHeight;
+     var bottom          = document.getElementById(bottom_id);
+     var bottom_top      = getY(bottom);
+     var bottom_height   = bottom.offsetHeight;
+     var window_height   = Geometry.getViewportHeight();
+     var fudge           = 23;
+     var new_height      = window_height-fudge-textarea_top-bottom_height;
+     if (new_height < 300) {
+ 	new_height = 300;
+     }
+     textarea.style.height=new_height+'px';
+ }
+ // ]]>
+ </script>
+ RESIZE
+ }
+ sub colorfuleditor_js {
+     my $browse_or_search;
+     my $respath;
+     my ($cnum,$cdom) = &crsauthor_url();
+     if ($cnum) {
+         $respath = "/res/$cdom/$cnum/";
+         my %js_lt = &Apache::lonlocal::texthash(
+             sunm => 'Sub-directory name',
+             save => 'Save page to make this permanent',
+         );
+         &js_escape(\%js_lt);
+         $browse_or_search = <<"END";
+     function toggleChooser(form,element,titleid,only,search) {
+         var disp = 'none';
+         if (document.getElementById('chooser_'+element)) {
+             var curr = document.getElementById('chooser_'+element).style.display;
+             if (curr == 'none') {
+                 disp='inline';
+                 if (form.elements['chooser_'+element].length) {
+                     for (var i=0; i<form.elements['chooser_'+element].length; i++) {
+                         form.elements['chooser_'+element][i].checked = false;
+                     }
+                 }
+                 toggleResImport(form,element);
+             }
+             document.getElementById('chooser_'+element).style.display = disp;
+         }
+     }
+     function toggleCrsFile(form,element,numdirs) {
+         if (document.getElementById('chooser_'+element+'_crsres')) {
+             var curr = document.getElementById('chooser_'+element+'_crsres').style.display;
+             if (curr == 'none') {
+                 if (numdirs) {
+                     form.elements['coursepath_'+element].selectedIndex = 0;
+                     if (numdirs > 1) {
+                         window['select1'+element+'_changed']();
+                     }
+                 }
+             }
+             document.getElementById('chooser_'+element+'_crsres').style.display = 'block';
+         }
+         if (document.getElementById('chooser_'+element+'_upload')) {
+             document.getElementById('chooser_'+element+'_upload').style.display = 'none';
+             if (document.getElementById('uploadcrsres_'+element)) {
+                 document.getElementById('uploadcrsres_'+element).value = '';
+             }
+         }
+         return;
+     }
+     function toggleCrsUpload(form,element,numcrsdirs) {
+         if (document.getElementById('chooser_'+element+'_crsres')) {
+             document.getElementById('chooser_'+element+'_crsres').style.display = 'none';
+         }
+         if (document.getElementById('chooser_'+element+'_upload')) {
+             var curr = document.getElementById('chooser_'+element+'_upload').style.display;
+             if (curr == 'none') {
+                 if (numcrsdirs) {
+                    form.elements['crsauthorpath_'+element].selectedIndex = 0;
+                    form.elements['newsubdir_'+element][0].checked = true;
+                    toggleNewsubdir(form,element);
+                 }
+             }
+             document.getElementById('chooser_'+element+'_upload').style.display = 'block';
+         }
+         return;
+     }
+     function toggleResImport(form,element) {
+         var choices = new Array('crsres','upload');
+         for (var i=0; i<choices.length; i++) {
+             if (document.getElementById('chooser_'+element+'_'+choices[i])) {
+                 document.getElementById('chooser_'+element+'_'+choices[i]).style.display = 'none';
+             }
+         }
+     }
+     function toggleNewsubdir(form,element) {
+         var newsub = form.elements['newsubdir_'+element];
+         if (newsub) {
+             if (newsub.length) {
+                 for (var j=0; j<newsub.length; j++) {
+                     if (newsub[j].checked) {
+                         if (document.getElementById('newsubdirname_'+element)) {
+                             if (newsub[j].value == '1') {
+                                 document.getElementById('newsubdirname_'+element).type = "text";
+                                 if (document.getElementById('newsubdir_'+element)) {
+                                     document.getElementById('newsubdir_'+element).innerHTML = '<br />$js_lt{sunm}';
+                                 }
+                             } else {
+                                 document.getElementById('newsubdirname_'+element).type = "hidden";
+                                 document.getElementById('newsubdirname_'+element).value = "";
+                                 document.getElementById('newsubdir_'+element).innerHTML = "";
+                             }
+                         }
+                         break;
+                     }
+                 }
+             }
+         }
+     }
+     function updateCrsFile(form,element) {
+         var directory = form.elements['coursepath_'+element];
+         var filename = form.elements['coursefile_'+element];
+         var path = directory.options[directory.selectedIndex].value;
+         var file = filename.options[filename.selectedIndex].value;
+         form.elements[element].value = '$respath';
+         if (path == '/') {
+             form.elements[element].value += file;
+         } else {
+             form.elements[element].value += path+'/'+file;
+         }
+         unClean();
+         if (document.getElementById('previewimg_'+element)) {
+             document.getElementById('previewimg_'+element).src = form.elements[element].value;
+             var newsrc = document.getElementById('previewimg_'+element).src;
+         }
+         if (document.getElementById('showimg_'+element)) {
+             document.getElementById('showimg_'+element).innerHTML = '($js_lt{save})';
+         }
+         toggleChooser(form,element);
+         return;
+     }
+     function uploadDone(suffix,name) {
+         if (name) {
+ 	    document.forms["lonhomework"].elements[suffix].value = name;
+             unClean();
+             toggleChooser(document.forms["lonhomework"],suffix);
+         }
+     }
+ \$(document).ready(function(){
+     \$(document).delegate('form :submit', 'click', function( event ) {
+         if ( \$( this ).hasClass( "LC_uploadcrsres" ) ) {
+             var buttonId = this.id;
+             var suffix = buttonId.toString();
+             suffix = suffix.replace(/^crsupload_/,'');
+             event.preventDefault();
+             document.lonhomework.target = 'crsupload_target_'+suffix;
+             document.lonhomework.action = '/adm/coursepub?LC_uploadcrsres='+suffix;
+             \$(this.form).submit();
+             document.lonhomework.target = '';
+             if (document.getElementById('crsuploadto_'+suffix)) {
+                 document.lonhomework.action = document.getElementById('crsuploadto_'+suffix).value;
+             }
+             return false;
+         }
+     });
+ });
+ END
+     }
+     return <<"COLORFULEDIT"
+ <script type="text/javascript">
+ // <![CDATA[>
+     function fold_box(curDepth, lastresource){
+     // we need a list because there can be several blocks you need to fold in one tag
+         var block = document.getElementsByName('foldblock_'+curDepth);
+     // but there is only one folding button per tag
+         var foldbutton = document.getElementById('folding_btn_'+curDepth);
+         if(block.item(0).style.display == 'none'){
+             foldbutton.value = '@{[&mt("Hide")]}';
+             for (i = 0; i < block.length; i++){
+                 block.item(i).style.display = '';
+             }
+         }else{
+             foldbutton.value = '@{[&mt("Show")]}';
+             for (i = 0; i < block.length; i++){
+                 // block.item(i).style.visibility = 'collapse';
+                 block.item(i).style.display = 'none';
+             }
+         };
+         saveState(lastresource);
+     }
+     function saveState (lastresource) {
+         var tag_list = getTagList();
+         if(tag_list != null){
+             var timestamp = new Date().getTime();
+             var key = lastresource;
+             // the value pattern is: 'time;key1,value1;key2,value2; ... '
+             // starting with timestamp
+             var value = timestamp+';';
+             // building the list of key-value pairs
+             for(var i = 0; i < tag_list.length; i++){
+                 value += tag_list[i]+',';
+                 value += document.getElementsByName(tag_list[i])[0].style.display+';';
+             }
+             // only iterate whole storage if nothing to override
+             if(localStorage.getItem(key) == null){
+                 // prevent storage from growing large
+                 if(localStorage.length > 50){
+                     var regex_getTimestamp = /^(?:\d)+;/;
+                     var oldest_timestamp = regex_getTimestamp.exec(localStorage.key(0));
+                     var oldest_key;
+                     for(var i = 1; i < localStorage.length; i++){
+                         if (regex_getTimestamp.exec(localStorage.key(i)) < oldest_timestamp) {
+                             oldest_key = localStorage.key(i);
+                             oldest_timestamp = regex_getTimestamp.exec(oldest_key);
+                         }
+                     }
+                     localStorage.removeItem(oldest_key);
+                 }
+             }
+             localStorage.setItem(key,value);
+         }
+     }
+     // restore folding status of blocks (on page load)
+     function restoreState (lastresource) {
+         if(localStorage.getItem(lastresource) != null){
+             var key = lastresource;
+             var value = localStorage.getItem(key);
+             var regex_delTimestamp = /^\d+;/;
+             value.replace(regex_delTimestamp, '');
+             var valueArr = value.split(';');
+             var pairs;
+             var elements;
+             for (var i = 0; i < valueArr.length; i++){
+                 pairs = valueArr[i].split(',');
+                 elements = document.getElementsByName(pairs[0]);
+                 for (var j = 0; j < elements.length; j++){
+                     elements[j].style.display = pairs[1];
+                     if (pairs[1] == "none"){
+                         var regex_id = /([_\\d]+)\$/;
+                         regex_id.exec(pairs[0]);
+                         document.getElementById("folding_btn"+RegExp.\$1).value = "Show";
+                     }
+                 }
+             }
+         }
+     }
+     function getTagList () {
+         var stringToSearch = document.lonhomework.innerHTML;
+         var ret = new Array();
+         var regex_findBlock = /(foldblock_.*?)"/g;
+         var tag_list = stringToSearch.match(regex_findBlock);
+         if(tag_list != null){
+             for(var i = 0; i < tag_list.length; i++){
+                 ret.push(tag_list[i].replace(/"/, ''));
+             }
+         }
+         return ret;
+     }
+     function saveScrollPosition (resource) {
+         var tag_list = getTagList();
+         // we dont always want to jump to the first block
+         // 170 is roughly above the "Problem Editing" header. we just want to save if the user scrolled down further than this
+         if(\$(window).scrollTop() > 170){
+             if(tag_list != null){
+                 var result;
+                 for(var i = 0; i < tag_list.length; i++){
+                     if(isElementInViewport(tag_list[i])){
+                         result += tag_list[i]+';';
+                     }
+                 }
+                 sessionStorage.setItem('anchor_'+resource, result);
+             }
+         } else {
+             // we dont need to save zero, just delete the item to leave everything tidy
+             sessionStorage.removeItem('anchor_'+resource);
+         }
+     }
+     function restoreScrollPosition(resource){
+         var elem = sessionStorage.getItem('anchor_'+resource);
+         if(elem != null){
+             var tag_list = elem.split(';');
+             var elem_list;
+             for(var i = 0; i < tag_list.length; i++){
+                 elem_list = document.getElementsByName(tag_list[i]);
+                 if(elem_list.length > 0){
+                     elem = elem_list[0];
+                     break;
+                 }
+             }
+             elem.scrollIntoView();
+         }
+     }
+     function isElementInViewport(el) {
+         // change to last element instead of first
+         var elem = document.getElementsByName(el);
+         var rect = elem[0].getBoundingClientRect();
+         return (
+             rect.top >= 0 &&
+             rect.left >= 0 &&
+             rect.bottom <= (window.innerHeight || document.documentElement.clientHeight) && /*or $(window).height() */
+             rect.right <= (window.innerWidth || document.documentElement.clientWidth) /*or $(window).width() */
+         );
+     }
+     function autosize(depth){
+         var cmInst = window['cm'+depth];
+         var fitsizeButton = document.getElementById('fitsize'+depth);
+         // is fixed size, switching to dynamic
+         if (sessionStorage.getItem("autosized_"+depth) == null) {
+             cmInst.setSize("","auto");
+             fitsizeButton.value = "@{[&mt('Fixed size')]}";
+             sessionStorage.setItem("autosized_"+depth, "yes");
+         // is dynamic size, switching to fixed
+         } else {
+             cmInst.setSize("","300px");
+             fitsizeButton.value = "@{[&mt('Dynamic size')]}";
+             sessionStorage.removeItem("autosized_"+depth);
+         }
+     }
+ $browse_or_search
+ // ]]>
+ </script>
+ COLORFULEDIT
+ }
+ sub xmleditor_js {
+     return <<XMLEDIT
+ <script type="text/javascript" src="/adm/jQuery/addons/jquery-scrolltofixed.js"></script>
+ <script type="text/javascript">
+ // <![CDATA[>
+     function saveScrollPosition (resource) {
+         var scrollPos = \$(window).scrollTop();
+         sessionStorage.setItem(resource,scrollPos);
+     }
+     function restoreScrollPosition(resource){
+         var scrollPos = sessionStorage.getItem(resource);
+         \$(window).scrollTop(scrollPos);
+     }
+     // unless internet explorer
+     if (!(window.navigator.appName == "Microsoft Internet Explorer" && (document.documentMode || document.compatMode))){
+         \$(document).ready(function() {
+              \$(".LC_edit_actionbar").scrollToFixed(\{zIndex: 100\});
+         });
+     }
+     // inserts text at cursor position into codemirror (xml editor only)
+     function insertText(text){
+         cm.focus();
+         var curPos = cm.getCursor();
+         cm.replaceRange(text.replace(/ESCAPEDSCRIPT/g,'script'), {line: curPos.line,ch: curPos.ch});
+     }
+ // ]]>
+ </script>
+ XMLEDIT
+ }
+ sub insert_folding_button {
+     my $curDepth = $Apache::lonxml::curdepth;
+     my $lastresource = $env{'request.ambiguous'};
+     return "<input type=\"button\" id=\"folding_btn_$curDepth\"
+             value=\"".&mt('Hide')."\" onclick=\"fold_box('$curDepth','$lastresource')\">";
+ }
+ sub crsauthor_url {
+     my ($url) = @_;
+     if ($url eq '') {
+         $url = $ENV{'REQUEST_URI'};
+     }
+     my ($cnum,$cdom);
+     if ($env{'request.course.id'}) {
+         my ($audom,$auname) = ($url =~ m{^/priv/($match_domain)/($match_name)/});
+         if ($audom ne '' && $auname ne '') {
+             if (($env{'course.'.$env{'request.course.id'}.'.num'} eq $auname) &&
+                 ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $audom)) {
+                 $cnum = $auname;
+                 $cdom = $audom;
+             }
+         }
+     }
+     return ($cnum,$cdom);
+ }
+ sub import_crsauthor_form {
+     my ($form,$firstselectname,$secondselectname,$onchangefirst,$only,$suffix) = @_;
+     return (0) unless ($env{'request.course.id'});
+     my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+     my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+     my $crshome = $env{'course.'.$env{'request.course.id'}.'.home'};
+     return (0) unless (($cnum ne '') && ($cdom ne ''));
+     my $londocroot = $Apache::lonnet::perlvar{'lonDocRoot'};
+     my @ids=&Apache::lonnet::current_machine_ids();
+     my ($output,$is_home,$relpath,%subdirs,%files,%selimport_menus);
+     if (grep(/^\Q$crshome\E$/,@ids)) {
+         $is_home = 1;
+     }
+     $relpath = "/priv/$cdom/$cnum";
+     &Apache::lonnet::recursedirs($is_home,'priv',$londocroot,$relpath,'',\%subdirs,\%files);
+     my %lt = &Apache::lonlocal::texthash (
+         fnam => 'Filename',
+         dire => 'Directory',
+     );
+     my $numdirs = scalar(keys(%files));
+     my (%possexts,$singledir,@singledirfiles);
+     if ($only) {
+         map { $possexts{$_} = 1; } split(/\s*,\s*/,$only);
+     }
+     my (%nonemptydirs,$possdirs);
+     if ($numdirs > 1) {
+         my @order;
+         foreach my $key (sort { lc($a) cmp lc($b) } (keys(%files))) {
+             if (ref($files{$key}) eq 'HASH') {
+                 my $shown = $key;
+                 if ($key eq '') {
+                     $shown = '/';
+                 }
+                 my @ordered = ();
+                 foreach my $file (sort { lc($a) cmp lc($b) } (keys(%{$files{$key}}))) {
+                     if ($only) {
+                         my ($ext) = ($file =~ /\.([^.]+)$/);
+                         unless ($possexts{lc($ext)}) {
+                             next;
+                         }
+                     }
+                     $selimport_menus{$key}->{'select2'}->{$file} = $file;
+                     push(@ordered,$file);
+                 }
+                 if (@ordered) {
+                     push(@order,$key);
+                     $nonemptydirs{$key} = 1;
+                     $selimport_menus{$key}->{'text'} = $shown;
+                     $selimport_menus{$key}->{'default'} = '';
+                     $selimport_menus{$key}->{'select2'}->{''} = '';
+                     $selimport_menus{$key}->{'order'} = \@ordered;
+                 }
+             }
+         }
+         $possdirs = scalar(keys(%nonemptydirs));
+         if ($possdirs > 1) {
+             my @order = sort { lc($a) cmp lc($b) } (keys(%nonemptydirs));
+             $output = $lt{'dire'}.
+                       &linked_select_forms($form,'<br />'.
+                                            $lt{'fnam'},'',
+                                            $firstselectname,$secondselectname,
+                                            \%selimport_menus,\@order,
+                                            $onchangefirst,'',$suffix).'<br />';
+         } elsif ($possdirs == 1) {
+             $singledir = (keys(%nonemptydirs))[0];
+             if (ref($selimport_menus{$singledir}->{'order'}) eq 'ARRAY') {
+                 @singledirfiles = @{$selimport_menus{$singledir}->{'order'}};
+             }
+             delete($selimport_menus{$singledir});
+         }
+     } elsif ($numdirs == 1) {
+         $singledir = (keys(%files))[0];
+         foreach my $file (sort { lc($a) cmp lc($b) } (keys(%{$files{$singledir}}))) {
+             if ($only) {
+                 my ($ext) = ($file =~ /\.([^.]+)$/);
+                 unless ($possexts{lc($ext)}) {
+                     next;
+                 }
+             }
+             push(@singledirfiles,$file);
+         }
+         if (@singledirfiles) {
+             $possdirs == 1;
+         }
+     }
+     if (($possdirs == 1) && (@singledirfiles)) {
+         my $showdir = $singledir;
+         if ($singledir eq '') {
+             $showdir = '/';
+         }
+         $output = $lt{'dire'}.
+                   '<select name="'.$firstselectname.'">'.
+                   '<option value="'.$singledir.'">'.$showdir.'</option>'."\n".
+                   '</select><br />'.
+                   $lt{'fnam'}.'<select name="'.$secondselectname.'">'."\n".
+                   '<option value="" selected="selected">'.$lt{'se'}.'</option>'."\n";
+         foreach my $file (@singledirfiles) {
+             $output .= '<option value="'.$file.'">'.$file.'</option>'."\n";
+         }
+         $output .= '</select><br />'."\n";
+     }
+     return ($possdirs,$output);
+ }
+ =pod
+ =head1 Excel and CSV file utility routines
  =cut
- Line 953  sub changable_area {
+ Line 2300  sub changable_area {
  =pod
- =item * csv_translate($text)
+ =over 4
+ =item * &csv_translate($text)
  Translate $text to allow it to be output as a 'comma separated values'
  format.
- Line 974  sub csv_translate {
+ Line 2323  sub csv_translate {
  =pod
- =item * define_excel_formats
+ =item * &define_excel_formats()
  Define some commonly used Excel cell formats.
- Line 1004  Inputs: $workbook
+ Line 2353  Inputs: $workbook
  Returns: $format, a hash reference.
  =cut
  ###############################################################
- Line 1030  sub define_excel_formats {
+ Line 2380  sub define_excel_formats {
  =pod
- =item * create_workbook
+ =item * &create_workbook()
  Create an Excel worksheet.  If it fails, output message on the
  request object and return undefs.
- Line 1055  sub create_workbook {
+ Line 2405  sub create_workbook {
      my $workbook  = Spreadsheet::WriteExcel->new('/home/httpd'.$filename);
      if (! defined($workbook)) {
          $r->log_error("Error creating excel spreadsheet $filename: $!");
-         $r->print('<p>'.&mt("Unable to create new Excel file.  ".
+         $r->print(
-                             "This error has been logged.  ".
+             '<p class="LC_error">'
-                             "Please alert your LON-CAPA administrator").
+            .&mt('Problems occurred in creating the new Excel file.')
-                   '</p>');
+            .' '.&mt('This error has been logged.')
+            .' '.&mt('Please alert your LON-CAPA administrator.')
+            .'</p>'
+         );
          return (undef);
      }
      #
-     $workbook->set_tempdir('/home/httpd/perl/tmp');
+     $workbook->set_tempdir(LONCAPA::tempdir());
      #
      my $format = &Apache::loncommon::define_excel_formats($workbook);
      return ($workbook,$filename,$format);
- Line 1073  sub create_workbook {
+ Line 2426  sub create_workbook {
  =pod
- =item * create_text_file
+ =item * &create_text_file()
- Create a file to write to and eventually make available to the usre.
+ Create a file to write to and eventually make available to the user.
  If file creation fails, outputs an error message on the request object and
  return undefs.
- Line 1098  sub create_text_file {
+ Line 2451  sub create_text_file {
      $fh = Apache::File->new('>/home/httpd'.$filename);
      if (! defined($fh)) {
          $r->log_error("Couldn't open $filename for output $!");
-         $r->print("Problems occured in creating the output file.  ".
+         $r->print(
-                   "This error has been logged.  ".
+             '<p class="LC_error">'
-                   "Please alert your LON-CAPA administrator.");
+            .&mt('Problems occurred in creating the output file.')
+            .' '.&mt('This error has been logged.')
+            .' '.&mt('Please alert your LON-CAPA administrator.')
+            .'</p>'
+         );
      }
      return ($fh,$filename)
  }
- Line 1116  sub create_text_file {
+ Line 2473  sub create_text_file {
  ##        Home server <option> list generating code          ##
  ###############################################################
- =pod
- =head1 Home Server option list generating code
- =over 4
- =item * get_domains()
- Returns an array containing each of the domains listed in the hosts.tab
- file.
- =cut
- #-------------------------------------------
- sub get_domains {
-     # The code below was stolen from "The Perl Cookbook", p 102, 1st ed.
-     my @domains;
-     my %seen;
-     foreach (sort values(%Apache::lonnet::hostdom)) {
- 	push (@domains,$_) unless $seen{$_}++;
-     }
-     return @domains;
- }
  # ------------------------------------------
  sub domain_select {
      my ($name,$value,$multiple)=@_;
      my %domains=map {
- 	$_ => $_.' '.$Apache::lonnet::domaindescription{$_}
+ 	$_ => $_.' '. &Apache::lonnet::domain($_,'description')
-     } &get_domains;
+     } &Apache::lonnet::all_domains();
      if ($multiple) {
  	$domains{''}=&mt('Any domain');
- 	return &multiple_select_form($name,$value,4,%domains);
+ 	$domains{'select_form_order'} = [sort {lc($a) cmp lc($b) } (keys(%domains))];
+ 	return &multiple_select_form($name,$value,4,\%domains);
      } else {
- 	return &select_form($name,$value,%domains);
+ 	$domains{'select_form_order'} = [sort {lc($a) cmp lc($b) } (keys(%domains))];
+ 	return &select_form($name,$value,\%domains);
      }
  }
- Line 1159  sub domain_select {
+ Line 2494  sub domain_select {
  =pod
- =item * multiple_select_form($name,$value,$size,%hash)
+ =head1 Routines for form select boxes
+ =over 4
+ =item * &multiple_select_form($name,$value,$size,$hash,$order)
  Returns a string containing a <select> element int multiple mode
  Args:
    $name - name of the <select> element
-   $value - sclara or array ref of values that should already be selected
+   $value - scalar or array ref of values that should already be selected
    $size - number of rows long the select element is
    $hash - the elements should be 'option' => 'shown text'
            (shown text should already have been &mt())
+   $order - (optional) array ref of the order to show the elements in
  =cut
  #-------------------------------------------
  sub multiple_select_form {
-     my ($name,$value,$size,$hash)=@_;
+     my ($name,$value,$size,$hash,$order)=@_;
      my %selected = map { $_ => 1 } ref($value)?@{$value}:($value);
      my $output='';
      if (! defined($size)) {
- Line 1184  sub multiple_select_form {
+ Line 2524  sub multiple_select_form {
              $size = scalar(keys(%$hash));
          }
      }
-     $output.="\n<select name='$name' size='$size' multiple='1'>";
+     $output.="\n".'<select name="'.$name.'" size="'.$size.'" multiple="multiple">';
-     foreach (sort(keys(%$hash))) {
+     my @order;
-         $output.='<option value="'.$_.'" ';
+     if (ref($order) eq 'ARRAY')  {
-         $output.='selected="selected" ' if ($selected{$_});
+         @order = @{$order};
-         $output.='>'.$hash->{$_}."</option>\n";
+     } else {
+         @order = sort(keys(%$hash));
+     }
+     if (exists($$hash{'select_form_order'})) {
+         @order = @{$$hash{'select_form_order'}};
+     }
+     foreach my $key (@order) {
+         $output.='<option value="'.&HTML::Entities::encode($key,'"<>&').'" ';
+         $output.='selected="selected" ' if ($selected{$key});
+         $output.='>'.$hash->{$key}."</option>\n";
      }
      $output.="</select>\n";
      return $output;
- Line 1198  sub multiple_select_form {
+ Line 2548  sub multiple_select_form {
  =pod
- =item * select_form($defdom,$name,%hash)
+ =item * &select_form($defdom,$name,$hashref,$onchange,$readonly)
  Returns a string containing a <select name='$name' size='1'> form to
- allow a user to select options from a hash option_name => displayed text.
+ allow a user to select options from a ref to a hash containing:
+ option_name => displayed text. An optional $onchange can include
+ a javascript onchange item, e.g., onchange="this.form.submit();".
+ An optional arg -- $readonly -- if true will cause the select form
+ to be disabled, e.g., for the case where an instructor has a section-
+ specific role, and is viewing/modifying parameters.
  See lonrights.pm for an example invocation and use.
  =cut
  #-------------------------------------------
  sub select_form {
-     my ($def,$name,%hash) = @_;
+     my ($def,$name,$hashref,$onchange,$readonly) = @_;
-     my $selectform = "<select name=\"$name\" size=\"1\">\n";
+     return unless (ref($hashref) eq 'HASH');
+     if ($onchange) {
+         $onchange = ' onchange="'.$onchange.'"';
+     }
+     my $disabled;
+     if ($readonly) {
+         $disabled = ' disabled="disabled"';
+     }
+     my $selectform = "<select name=\"$name\" size=\"1\"$onchange$disabled>\n";
      my @keys;
-     if (exists($hash{'select_form_order'})) {
+     if (exists($hashref->{'select_form_order'})) {
- 	@keys=@{$hash{'select_form_order'}};
+ 	@keys=@{$hashref->{'select_form_order'}};
      } else {
- 	@keys=sort(keys(%hash));
+ 	@keys=sort(keys(%{$hashref}));
      }
-     foreach (@keys) {
+     foreach my $key (@keys) {
-         $selectform.="<option value=\"$_\" ".
+         $selectform.=
-             ($_ eq $def ? 'selected="selected" ' : '').
+ 	    '<option value="'.&HTML::Entities::encode($key,'"<>&').'" '.
-                 ">".&mt($hash{$_})."</option>\n";
+             ($key eq $def ? 'selected="selected" ' : '').
+                 ">".$hashref->{$key}."</option>\n";
      }
      $selectform.="</select>";
      return $selectform;
  }
+ # For display filters
+ sub display_filter {
+     my ($context) = @_;
+     if (!$env{'form.show'}) { $env{'form.show'}=10; }
+     if (!$env{'form.displayfilter'}) { $env{'form.displayfilter'}='currentfolder'; }
+     my $phraseinput = 'hidden';
+     my $includeinput = 'hidden';
+     my ($checked,$includetypestext);
+     if ($env{'form.displayfilter'} eq 'containing') {
+         $phraseinput = 'text';
+         if ($context eq 'parmslog') {
+             $includeinput = 'checkbox';
+             if ($env{'form.includetypes'}) {
+                 $checked = ' checked="checked"';
+             }
+             $includetypestext = &mt('Include parameter types');
+         }
+     } else {
+         $includetypestext = '&nbsp;';
+     }
+     my ($additional,$secondid,$thirdid);
+     if ($context eq 'parmslog') {
+         $additional =
+             '<label><input type="'.$includeinput.'" name="includetypes"'.
+             $checked.' name="includetypes" value="1" id="includetypes" />'.
+             '&nbsp;<span id="includetypestext">'.$includetypestext.'</span>'.
+             '</label>';
+         $secondid = 'includetypes';
+         $thirdid = 'includetypestext';
+     }
+     my $onchange = "javascript:toggleHistoryOptions(this,'containingphrase','$context',
+                                                     '$secondid','$thirdid')";
+     return '<span class="LC_nobreak"><label>'.&mt('Records: [_1]',
+ 			       &Apache::lonmeta::selectbox('show',$env{'form.show'},undef,
+ 							   (&mt('all'),10,20,50,100,1000,10000))).
+ 	   '</label></span> <span class="LC_nobreak">'.
+            &mt('Filter: [_1]',
+ 	   &select_form($env{'form.displayfilter'},
+ 			'displayfilter',
+ 			{'currentfolder' => 'Current folder/page',
+ 			 'containing' => 'Containing phrase',
+ 			 'none' => 'None'},$onchange)).'&nbsp;'.
+ 			 '<input type="'.$phraseinput.'" name="containingphrase" id="containingphrase" size="30" value="'.
+                          &HTML::Entities::encode($env{'form.containingphrase'}).
+                          '" />'.$additional;
+ }
+ sub display_filter_js {
+     my $includetext = &mt('Include parameter types');
+     return <<"ENDJS";
+ function toggleHistoryOptions(setter,firstid,context,secondid,thirdid) {
+     var firstType = 'hidden';
+     if (setter.options[setter.selectedIndex].value == 'containing') {
+         firstType = 'text';
+     }
+     firstObject = document.getElementById(firstid);
+     if (typeof(firstObject) == 'object') {
+         if (firstObject.type != firstType) {
+             changeInputType(firstObject,firstType);
+         }
+     }
+     if (context == 'parmslog') {
+         var secondType = 'hidden';
+         if (firstType == 'text') {
+             secondType = 'checkbox';
+         }
+         secondObject = document.getElementById(secondid);
+         if (typeof(secondObject) == 'object') {
+             if (secondObject.type != secondType) {
+                 changeInputType(secondObject,secondType);
+             }
+         }
+         var textItem = document.getElementById(thirdid);
+         var currtext = textItem.innerHTML;
+         var newtext;
+         if (firstType == 'text') {
+             newtext = '$includetext';
+         } else {
+             newtext = '&nbsp;';
+         }
+         if (currtext != newtext) {
+             textItem.innerHTML = newtext;
+         }
+     }
+     return;
+ }
+ function changeInputType(oldObject,newType) {
+     var newObject = document.createElement('input');
+     newObject.type = newType;
+     if (oldObject.size) {
+         newObject.size = oldObject.size;
+     }
+     if (oldObject.value) {
+         newObject.value = oldObject.value;
+     }
+     if (oldObject.name) {
+         newObject.name = oldObject.name;
+     }
+     if (oldObject.id) {
+         newObject.id = oldObject.id;
+     }
+     oldObject.parentNode.replaceChild(newObject,oldObject);
+     return;
+ }
+ ENDJS
+ }
  sub gradeleveldescription {
      my $gradelevel=shift;
      my %gradelevels=(0 => 'Not specified',
- Line 1266  sub select_level_form {
+ Line 2742  sub select_level_form {
  =pod
- =item * select_dom_form($defdom,$name,$includeempty)
+ =item * &select_dom_form($defdom,$name,$includeempty,$showdomdesc,$onchange,$incdoms,$excdoms,$disabled)
  Returns a string containing a <select name='$name' size='1'> form to
  allow a user to select the domain to preform an operation in.
- Line 1275  See loncreateuser.pm for an example invo
+ Line 2751  See loncreateuser.pm for an example invo
  If the $includeempty flag is set, it also includes an empty choice ("no domain
  selected");
- =cut
+ If the $showdomdesc flag is set, the domain name is followed by the domain description.
- #-------------------------------------------
- sub select_dom_form {
-     my ($defdom,$name,$includeempty) = @_;
-     my @domains = get_domains();
-     if ($includeempty) { @domains=('',@domains); }
-     my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
-     foreach (@domains) {
-         $selectdomain.="<option value=\"$_\" ".
-             ($_ eq $defdom ? 'selected="selected" ' : '').
-                 ">$_</option>\n";
-     }
-     $selectdomain.="</select>";
-     return $selectdomain;
- }
- #-------------------------------------------
+ The optional $onchange argument specifies what should occur if the domain selector is changed, e.g., 'this.form.submit()' if the form is to be automatically submitted.
- =pod
+ The optional $incdoms is a reference to an array of domains which will be the only available options.
- =item * get_library_servers($domain)
+ The optional $excdoms is a reference to an array of domains which will be excluded from the available options.
- Returns a hash which contains keys like '103l3' and values like
+ The optional $disabled argument, if true, adds the disabled attribute to the select tag.
- 'kirk.lite.msu.edu'.  All of the keys will be for machines in the
- given $domain.
  =cut
  #-------------------------------------------
- sub get_library_servers {
+ sub select_dom_form {
-     my $domain = shift;
+     my ($defdom,$name,$includeempty,$showdomdesc,$onchange,$incdoms,$excdoms,$disabled) = @_;
-     my %library_servers;
+     if ($onchange) {
-     foreach (keys(%Apache::lonnet::libserv)) {
+         $onchange = ' onchange="'.$onchange.'"';
-         if ($Apache::lonnet::hostdom{$_} eq $domain) {
+     }
-             $library_servers{$_} = $Apache::lonnet::hostname{$_};
+     if ($disabled) {
+         $disabled = ' disabled="disabled"';
+     }
+     my (@domains,%exclude);
+     if (ref($incdoms) eq 'ARRAY') {
+         @domains = sort {lc($a) cmp lc($b)} (@{$incdoms});
+     } else {
+         @domains = sort {lc($a) cmp lc($b)} (&Apache::lonnet::all_domains());
+     }
+     if ($includeempty) { @domains=('',@domains); }
+     if (ref($excdoms) eq 'ARRAY') {
+         map { $exclude{$_} = 1; } @{$excdoms};
+     }
+     my $selectdomain = "<select name=\"$name\" size=\"1\"$onchange$disabled>\n";
+     foreach my $dom (@domains) {
+         next if ($exclude{$dom});
+         $selectdomain.="<option value=\"$dom\" ".
+             ($dom eq $defdom ? 'selected="selected" ' : '').'>'.$dom;
+         if ($showdomdesc) {
+             if ($dom ne '') {
+                 my $domdesc = &Apache::lonnet::domain($dom,'description');
+                 if ($domdesc ne '') {
+                     $selectdomain .= ' ('.$domdesc.')';
+                 }
+             }
          }
+         $selectdomain .= "</option>\n";
      }
-     return %library_servers;
+     $selectdomain.="</select>";
+     return $selectdomain;
  }
  #-------------------------------------------
  =pod
- =item * home_server_option_list($domain)
+ =item * &home_server_form_item($domain,$name,$defaultflag)
+ input: 4 arguments (two required, two optional) -
+     $domain - domain of new user
+     $name - name of form element
+     $default - Value of 'default' causes a default item to be first
+                             option, and selected by default.
+     $hide - Value of 'hide' causes hiding of the name of the server,
+                             if 1 server found, or default, if 0 found.
+ output: returns 2 items:
+ (a) form element which contains either:
+    (i) <select name="$name">
+         <option value="$hostid1">$hostid $servers{$hostid}</option>
+         <option value="$hostid2">$hostid $servers{$hostid}</option>
+        </select>
+        form item if there are multiple library servers in $domain, or
+    (ii) an <input type="hidden" name="$name" value="$hostid" /> form item
+        if there is only one library server in $domain.
+ (b) number of library servers found.
- returns a string which contains an <option> list to be used in a
+ See loncreateuser.pm for example of use.
- <select> form input.  See loncreateuser.pm for an example.
  =cut
  #-------------------------------------------
- sub home_server_option_list {
+ sub home_server_form_item {
-     my $domain = shift;
+     my ($domain,$name,$default,$hide) = @_;
-     my %servers = &get_library_servers($domain);
+     my %servers = &Apache::lonnet::get_servers($domain,'library');
-     my $result = '';
+     my $result;
-     foreach (sort keys(%servers)) {
+     my $numlib = keys(%servers);
-         $result.=
+     if ($numlib > 1) {
-             '<option value="'.$_.'">'.$_.' '.$servers{$_}."</option>\n";
+         $result .= '<select name="'.$name.'" />'."\n";
+         if ($default) {
+             $result .= '<option value="default" selected="selected">'.&mt('default').
+                        '</option>'."\n";
+         }
+         foreach my $hostid (sort(keys(%servers))) {
+             $result.= '<option value="'.$hostid.'">'.
+ 	              $hostid.' '.$servers{$hostid}."</option>\n";
+         }
+         $result .= '</select>'."\n";
+     } elsif ($numlib == 1) {
+         my $hostid;
+         foreach my $item (keys(%servers)) {
+             $hostid = $item;
+         }
+         $result .= '<input type="hidden" name="'.$name.'" value="'.
+                    $hostid.'" />';
+                    if (!$hide) {
+                        $result .= $hostid.' '.$servers{$hostid};
+                    }
+                    $result .= "\n";
+     } elsif ($default) {
+         $result .= '<input type="hidden" name="'.$name.
+                    '" value="default" />';
+                    if (!$hide) {
+                        $result .= &mt('default');
+                    }
+                    $result .= "\n";
      }
-     return $result;
+     return ($result,$numlib);
  }
  =pod
  =back
  =cut
- Line 1375  Outputs:
+ Line 2905  Outputs:
  =item * $clientos
+ =item * $clientmobile
+ =item * $clientinfo
+ =item * $clientosversion
  =back
  =back
- Line 1393  sub decode_user_agent {
+ Line 2929  sub decode_user_agent {
      my $clientversion='0';
      my $clientmathml='';
      my $clientunicode='0';
+     my $clientmobile=0;
+     my $clientosversion='';
      for (my $i=0;$i<=$#browsertype;$i++) {
-         my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\:/,$browsertype[$i]);
+         my ($bname,$match,$notmatch,$vreg,$minv,$univ)=split(/\%/,$browsertype[$i]);
  	if (($httpbrowser=~/$match/i)  && ($httpbrowser!~/$notmatch/i)) {
  	    $clientbrowser=$bname;
              $httpbrowser=~/$vreg/i;
- Line 1404  sub decode_user_agent {
+ Line 2942  sub decode_user_agent {
  	}
      }
      my $clientos='unknown';
+     my $clientinfo;
      if (($httpbrowser=~/linux/i) ||
          ($httpbrowser=~/unix/i) ||
          ($httpbrowser=~/ux/i) ||
- Line 1413  sub decode_user_agent {
+ Line 2952  sub decode_user_agent {
      if ($httpbrowser=~/next/i) { $clientos='next'; }
      if (($httpbrowser=~/mac/i) ||
          ($httpbrowser=~/powerpc/i)) { $clientos='mac'; }
-     if ($httpbrowser=~/win/i) { $clientos='win'; }
+     if ($httpbrowser=~/win/i) {
+         $clientos='win';
+         if ($httpbrowser =~/Windows\s+NT\s+(\d+\.\d+)/i) {
+             $clientosversion = $1;
+         }
+     }
      if ($httpbrowser=~/embed/i) { $clientos='pda'; }
+     if ($httpbrowser=~/(Android|iPod|iPad|iPhone|webOS|Blackberry|Windows Phone|Opera m(?:ob|in)|Fennec)/i) {
+         $clientmobile=lc($1);
+     }
+     if ($httpbrowser=~ m{Firefox/(\d+\.\d+)}) {
+         $clientinfo = 'firefox-'.$1;
+     } elsif ($httpbrowser=~ m{chromeframe/(\d+\.\d+)\.}) {
+         $clientinfo = 'chromeframe-'.$1;
+     }
      return ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
-             $clientunicode,$clientos,);
+             $clientunicode,$clientos,$clientmobile,$clientinfo,
+             $clientosversion);
  }
  ###############################################################
- Line 1435  sub decode_user_agent {
+ Line 2988  sub decode_user_agent {
  =over 4
- =item * authform_xxxxxx
+ =item * &authform_xxxxxx()
  The authform_xxxxxx subroutines provide javascript and html forms which
  handle some of the conveniences required for authentication forms.
  This is not an optimal method, but it works.
- See loncreateuser.pm for invocation and use examples.
  =over 4
  =item * authform_header
- Line 1459  See loncreateuser.pm for invocation and
+ Line 3010  See loncreateuser.pm for invocation and
  =back
- =back
+ See loncreateuser.pm for invocation and use examples.
  =cut
- Line 1489  END
+ Line 3040  END
      }
      my $radioval = "'nochange'";
-     if (exists($in{'curr_authtype'}) &&
+     if (defined($in{'curr_authtype'})) {
-         defined($in{'curr_authtype'}) &&
+         if ($in{'curr_authtype'} ne '') {
-         $in{'curr_authtype'} ne '') {
+             $radioval = "'".$in{'curr_authtype'}."arg'";
-         $radioval = "'$in{'curr_authtype'}arg'";
+         }
      }
      my $argfield = 'null';
-     if ( grep/^mode$/,(keys %in) ) {
+     if (defined($in{'mode'})) {
          if ($in{'mode'} eq 'modifycourse')  {
-             if ( grep/^curr_authtype$/,(keys %in) ) {
+             if (defined($in{'curr_autharg'})) {
-                 $radioval = "'$in{'curr_authtype'}'";
+                 if ($in{'curr_autharg'} ne '') {
-             }
-             if ( grep/^curr_autharg$/,(keys %in) ) {
-                 unless ($in{'curr_autharg'} eq '') {
                      $argfield = "'$in{'curr_autharg'}'";
                  }
              }
- Line 1553  function changed_text(choice,currentform
+ Line 3101  function changed_text(choice,currentform
  }
  function set_auth_radio_buttons(newvalue,currentform) {
+     var numauthchoices = currentform.login.length;
+     if (typeof numauthchoices  == "undefined") {
+         return;
+     }
      var i=0;
-     while (i < currentform.login.length) {
+     while (i < numauthchoices) {
          if (currentform.login[i].value == newvalue) { break; }
          i++;
      }
-     if (i == currentform.login.length) {
+     if (i == numauthchoices) {
          return;
      }
      current.radiovalue = newvalue;
- Line 1569  END
+ Line 3121  END
      return $result;
  }
- sub authform_authorwarning{
+ sub authform_authorwarning {
      my $result='';
      $result='<i>'.
          &mt('As a general rule, only authors or co-authors should be '.
- Line 1578  sub authform_authorwarning{
+ Line 3130  sub authform_authorwarning{
      return $result;
  }
- sub authform_nochange{
+ sub authform_nochange {
      my %in = (
                formname => 'document.cu',
                kerb_def_dom => 'MSU.EDU',
                @_,
            );
-     my $result = '<label>'.&mt('[_1] Do not change login data',
+     my ($authnum,%can_assign) = &get_assignable_auth($in{'domain'});
-                      '<input type="radio" name="login" value="nochange" '.
+     my $result;
-                      'checked="checked" onclick="'.
+     if (!$authnum) {
+         $result = &mt('Under your current role you are not permitted to change login settings for this user');
+     } else {
+         $result = '<label>'.&mt('[_1] Do not change login data',
+                   '<input type="radio" name="login" value="nochange" '.
+                   'checked="checked" onclick="'.
              "javascript:changed_radio('nochange',$in{'formname'});".'" />').
  	    '</label>';
+     }
      return $result;
  }
- sub authform_kerberos{
+ sub authform_kerberos {
      my %in = (
                formname => 'document.cu',
                kerb_def_dom => 'MSU.EDU',
                kerb_def_auth => 'krb4',
                @_,
                );
-     my ($check4,$check5,$krbarg);
+     my ($check4,$check5,$krbcheck,$krbarg,$krbver,$result,$authtype,
+         $autharg,$jscall,$disabled);
+     my ($authnum,%can_assign) = &get_assignable_auth($in{'domain'});
      if ($in{'kerb_def_auth'} eq 'krb5') {
-        $check5 = " checked=\"on\"";
+        $check5 = ' checked="checked"';
      } else {
-        $check4 = " checked=\"on\"";
+        $check4 = ' checked="checked"';
+     }
+     if ($in{'readonly'}) {
+         $disabled = ' disabled="disabled"';
      }
      $krbarg = $in{'kerb_def_dom'};
+     if (defined($in{'curr_authtype'})) {
-     my $krbcheck = "";
+         if ($in{'curr_authtype'} eq 'krb') {
-     if ( grep/^curr_authtype$/,(keys %in) ) {
+             $krbcheck = ' checked="checked"';
-         if ($in{'curr_authtype'} =~ m/^krb/) {
+             if (defined($in{'mode'})) {
-             $krbcheck = " checked=\"on\"";
+                 if ($in{'mode'} eq 'modifyuser') {
-             if ( grep/^curr_autharg$/,(keys %in) ) {
+                     $krbcheck = '';
+                 }
+             }
+             if (defined($in{'curr_kerb_ver'})) {
+                 if ($in{'curr_krb_ver'} eq '5') {
+                     $check5 = ' checked="checked"';
+                     $check4 = '';
+                 } else {
+                     $check4 = ' checked="checked"';
+                     $check5 = '';
+                 }
+             }
+             if (defined($in{'curr_autharg'})) {
                  $krbarg = $in{'curr_autharg'};
              }
+             if (!$can_assign{'krb4'} && !$can_assign{'krb5'}) {
+                 if (defined($in{'curr_autharg'})) {
+                     $result =
+     &mt('Currently Kerberos authenticated with domain [_1] Version [_2].',
+         $in{'curr_autharg'},$krbver);
+                 } else {
+                     $result =
+     &mt('Currently Kerberos authenticated, Version [_1].',$krbver);
+                 }
+                 return $result;
+             }
+         }
+     } else {
+         if ($authnum == 1) {
+             $authtype = '<input type="hidden" name="login" value="krb" />';
          }
      }
+     if (!$can_assign{'krb4'} && !$can_assign{'krb5'}) {
-     my $jscall = "javascript:changed_radio('krb',$in{'formname'});";
+         return;
-     my $result .= &mt
+     } elsif ($authtype eq '') {
+         if (defined($in{'mode'})) {
+             if ($in{'mode'} eq 'modifycourse') {
+                 if ($authnum == 1) {
+                     $authtype = '<input type="radio" name="login" value="krb"'.$disabled.' />';
+                 }
+             }
+         }
+     }
+     $jscall = "javascript:changed_radio('krb',$in{'formname'});";
+     if ($authtype eq '') {
+         $authtype = '<input type="radio" name="login" value="krb" '.
+                     'onclick="'.$jscall.'" onchange="'.$jscall.'"'.
+                     $krbcheck.$disabled.' />';
+     }
+     if (($can_assign{'krb4'} && $can_assign{'krb5'}) ||
+         ($can_assign{'krb4'} && !$can_assign{'krb5'} &&
+          $in{'curr_authtype'} eq 'krb5') ||
+         (!$can_assign{'krb4'} && $can_assign{'krb5'} &&
+          $in{'curr_authtype'} eq 'krb4')) {
+         $result .= &mt
          ('[_1] Kerberos authenticated with domain [_2] '.
           '[_3] Version 4 [_4] Version 5 [_5]',
-          '<label><input type="radio" name="login" value="krb" '.
+          '<label>'.$authtype,
-              'onclick="'.$jscall.'" onchange="'.$jscall.'"'.$krbcheck.' />',
           '</label><input type="text" size="10" name="krbarg" '.
               'value="'.$krbarg.'" '.
-              'onchange="'.$jscall.'" />',
+              'onchange="'.$jscall.'"'.$disabled.' />',
-          '<label><input type="radio" name="krbver" value="4" '.$check4.' />',
+          '<label><input type="radio" name="krbver" value="4" '.$check4.$disabled.' />',
-          '</label><label><input type="radio" name="krbver" value="5" '.$check5.' />',
+          '</label><label><input type="radio" name="krbver" value="5" '.$check5.$disabled.' />',
  	 '</label>');
+     } elsif ($can_assign{'krb4'}) {
+         $result .= &mt
+         ('[_1] Kerberos authenticated with domain [_2] '.
+          '[_3] Version 4 [_4]',
+          '<label>'.$authtype,
+          '</label><input type="text" size="10" name="krbarg" '.
+              'value="'.$krbarg.'" '.
+              'onchange="'.$jscall.'"'.$disabled.' />',
+          '<label><input type="hidden" name="krbver" value="4" />',
+          '</label>');
+     } elsif ($can_assign{'krb5'}) {
+         $result .= &mt
+         ('[_1] Kerberos authenticated with domain [_2] '.
+          '[_3] Version 5 [_4]',
+          '<label>'.$authtype,
+          '</label><input type="text" size="10" name="krbarg" '.
+              'value="'.$krbarg.'" '.
+              'onchange="'.$jscall.'"'.$disabled.' />',
+          '<label><input type="hidden" name="krbver" value="5" />',
+          '</label>');
+     }
      return $result;
  }
- sub authform_internal{
+ sub authform_internal {
-     my %args = (
+     my %in = (
                  formname => 'document.cu',
                  kerb_def_dom => 'MSU.EDU',
                  @_,
                  );
+     my ($intcheck,$intarg,$result,$authtype,$autharg,$jscall,$disabled);
-     my $intcheck = "";
+     my ($authnum,%can_assign) = &get_assignable_auth($in{'domain'});
-     my $intarg = 'value=""';
+     if ($in{'readonly'}) {
-     if ( grep/^curr_authtype$/,(keys %args) ) {
+         $disabled = ' disabled="disabled"';
-         if ($args{'curr_authtype'} eq 'int') {
+     }
-             $intcheck = " checked=\"on\"";
+     if (defined($in{'curr_authtype'})) {
-             if ( grep/^curr_autharg$/,(keys %args) ) {
+         if ($in{'curr_authtype'} eq 'int') {
-                 $intarg = "value=\"$args{'curr_autharg'}\"";
+             if ($can_assign{'int'}) {
+                 $intcheck = 'checked="checked" ';
+                 if (defined($in{'mode'})) {
+                     if ($in{'mode'} eq 'modifyuser') {
+                         $intcheck = '';
+                     }
+                 }
+                 if (defined($in{'curr_autharg'})) {
+                     $intarg = $in{'curr_autharg'};
+                 }
+             } else {
+                 $result = &mt('Currently internally authenticated.');
+                 return $result;
+             }
+         }
+     } else {
+         if ($authnum == 1) {
+             $authtype = '<input type="hidden" name="login" value="int" />';
+         }
+     }
+     if (!$can_assign{'int'}) {
+         return;
+     } elsif ($authtype eq '') {
+         if (defined($in{'mode'})) {
+             if ($in{'mode'} eq 'modifycourse') {
+                 if ($authnum == 1) {
+                     $authtype = '<input type="radio" name="login" value="int"'.$disabled.' />';
+                 }
              }
          }
      }
+     $jscall = "javascript:changed_radio('int',$in{'formname'});";
-     my $jscall = "javascript:changed_radio('int',$args{'formname'});";
+     if ($authtype eq '') {
-     my $result.=&mt
+         $authtype = '<input type="radio" name="login" value="int" '.$intcheck.
+                     ' onchange="'.$jscall.'" onclick="'.$jscall.'"'.$disabled.' />';
+     }
+     $autharg = '<input type="password" size="10" name="intarg" value="'.
+                $intarg.'" onchange="'.$jscall.'"'.$disabled.' />';
+     $result = &mt
          ('[_1] Internally authenticated (with initial password [_2])',
-          '<label><input type="radio" name="login" value="int" '.$intcheck.
+          '<label>'.$authtype,'</label>'.$autharg);
-              ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
+     $result.='<label><input type="checkbox" name="visible" onclick="if (this.checked) { this.form.intarg.type='."'text'".' } else { this.form.intarg.type='."'password'".' }"'.$disabled.' />'.&mt('Visible input').'</label>';
-          '</label><input type="text" size="10" name="intarg" '.$intarg.
-              ' onchange="'.$jscall.'" />');
      return $result;
  }
- sub authform_local{
+ sub authform_local {
      my %in = (
                formname => 'document.cu',
                kerb_def_dom => 'MSU.EDU',
                @_,
                );
+     my ($loccheck,$locarg,$result,$authtype,$autharg,$jscall,$disabled);
-     my $loccheck = "";
+     my ($authnum,%can_assign) = &get_assignable_auth($in{'domain'});
-     my $locarg = 'value=""';
+     if ($in{'readonly'}) {
-     if ( grep/^curr_authtype$/,(keys %in) ) {
+         $disabled = ' disabled="disabled"';
+     }
+     if (defined($in{'curr_authtype'})) {
          if ($in{'curr_authtype'} eq 'loc') {
-             $loccheck = " checked=\"on\"";
+             if ($can_assign{'loc'}) {
-             if ( grep/^curr_autharg$/,(keys %in) ) {
+                 $loccheck = 'checked="checked" ';
-                 $locarg = "value=\"$in{'curr_autharg'}\"";
+                 if (defined($in{'mode'})) {
+                     if ($in{'mode'} eq 'modifyuser') {
+                         $loccheck = '';
+                     }
+                 }
+                 if (defined($in{'curr_autharg'})) {
+                     $locarg = $in{'curr_autharg'};
+                 }
+             } else {
+                 $result = &mt('Currently using local (institutional) authentication.');
+                 return $result;
              }
          }
+     } else {
+         if ($authnum == 1) {
+             $authtype = '<input type="hidden" name="login" value="loc" />';
+         }
      }
+     if (!$can_assign{'loc'}) {
-     my $jscall = "javascript:changed_radio('loc',$in{'formname'});";
+         return;
-     my $result.=&mt('[_1] Local Authentication with argument [_2]',
+     } elsif ($authtype eq '') {
-                     '<label><input type="radio" name="login" value="loc" '.$loccheck.
+         if (defined($in{'mode'})) {
-                         ' onchange="'.$jscall.'" onclick="'.$jscall.'" />',
+             if ($in{'mode'} eq 'modifycourse') {
-                     '</label><input type="text" size="10" name="locarg" '.$locarg.
+                 if ($authnum == 1) {
-                         ' onchange="'.$jscall.'" />');
+                     $authtype = '<input type="radio" name="login" value="loc"'.$disabled.' />';
+                 }
+             }
+         }
+     }
+     $jscall = "javascript:changed_radio('loc',$in{'formname'});";
+     if ($authtype eq '') {
+         $authtype = '<input type="radio" name="login" value="loc" '.
+                     $loccheck.' onchange="'.$jscall.'" onclick="'.
+                     $jscall.'"'.$disabled.' />';
+     }
+     $autharg = '<input type="text" size="10" name="locarg" value="'.
+                $locarg.'" onchange="'.$jscall.'"'.$disabled.' />';
+     $result = &mt('[_1] Local Authentication with argument [_2]',
+                   '<label>'.$authtype,'</label>'.$autharg);
      return $result;
  }
- sub authform_filesystem{
+ sub authform_filesystem {
      my %in = (
                formname => 'document.cu',
                kerb_def_dom => 'MSU.EDU',
                @_,
                );
-     my $jscall = "javascript:changed_radio('fsys',$in{'formname'});";
+     my ($fsyscheck,$result,$authtype,$autharg,$jscall,$disabled);
-     my $result.= &mt
+     my ($authnum,%can_assign) = &get_assignable_auth($in{'domain'});
+     if ($in{'readonly'}) {
+         $disabled = ' disabled="disabled"';
+     }
+     if (defined($in{'curr_authtype'})) {
+         if ($in{'curr_authtype'} eq 'fsys') {
+             if ($can_assign{'fsys'}) {
+                 $fsyscheck = 'checked="checked" ';
+                 if (defined($in{'mode'})) {
+                     if ($in{'mode'} eq 'modifyuser') {
+                         $fsyscheck = '';
+                     }
+                 }
+             } else {
+                 $result = &mt('Currently Filesystem Authenticated.');
+                 return $result;
+             }
+         }
+     } else {
+         if ($authnum == 1) {
+             $authtype = '<input type="hidden" name="login" value="fsys" />';
+         }
+     }
+     if (!$can_assign{'fsys'}) {
+         return;
+     } elsif ($authtype eq '') {
+         if (defined($in{'mode'})) {
+             if ($in{'mode'} eq 'modifycourse') {
+                 if ($authnum == 1) {
+                     $authtype = '<input type="radio" name="login" value="fsys"'.$disabled.' />';
+                 }
+             }
+         }
+     }
+     $jscall = "javascript:changed_radio('fsys',$in{'formname'});";
+     if ($authtype eq '') {
+         $authtype = '<input type="radio" name="login" value="fsys" '.
+                     $fsyscheck.' onchange="'.$jscall.'" onclick="'.
+                     $jscall.'"'.$disabled.' />';
+     }
+     $autharg = '<input type="text" size="10" name="fsysarg" value=""'.
+                ' onchange="'.$jscall.'"'.$disabled.' />';
+     $result = &mt
          ('[_1] Filesystem Authenticated (with initial password [_2])',
           '<label><input type="radio" name="login" value="fsys" '.
-          'onchange="'.$jscall.'" onclick="'.$jscall.'" />',
+          $fsyscheck.'onchange="'.$jscall.'" onclick="'.$jscall.'"'.$disabled.' />',
-          '</label><input type="text" size="10" name="fsysarg" value="" '.
+          '</label><input type="password" size="10" name="fsysarg" value="" '.
-                   'onchange="'.$jscall.'" />');
+                   'onchange="'.$jscall.'"'.$disabled.' />');
      return $result;
  }
- ###############################################################
+ sub get_assignable_auth {
- ##    Get Authentication Defaults for Domain                 ##
+     my ($dom) = @_;
- ###############################################################
+     if ($dom eq '') {
+         $dom = $env{'request.role.domain'};
- =pod
+     }
+     my %can_assign = (
- =head1 Domains and Authentication
+                           krb4 => 1,
+                           krb5 => 1,
- Returns default authentication type and an associated argument as
+                           int  => 1,
- listed in file 'domain.tab'.
+                           loc  => 1,
+                      );
- =over 4
+     my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$dom);
+     if (ref($domconfig{'usercreation'}) eq 'HASH') {
- =item * get_auth_defaults
+         if (ref($domconfig{'usercreation'}{'authtypes'}) eq 'HASH') {
+             my $authhash = $domconfig{'usercreation'}{'authtypes'};
- get_auth_defaults($target_domain) returns the default authentication
+             my $context;
- type and an associated argument (initial password or a kerberos domain).
+             if ($env{'request.role'} =~ /^au/) {
- These values are stored in lonTabs/domain.tab
+                 $context = 'author';
+             } elsif ($env{'request.role'} =~ /^(dc|dh)/) {
- ($def_auth, $def_arg) = &get_auth_defaults($target_domain);
+                 $context = 'domain';
+             } elsif ($env{'request.course.id'}) {
- If target_domain is not found in domain.tab, returns nothing ('').
+                 $context = 'course';
+             }
- =cut
+             if ($context) {
+                 if (ref($authhash->{$context}) eq 'HASH') {
- #-------------------------------------------
+                    %can_assign = %{$authhash->{$context}};
- sub get_auth_defaults {
+                 }
-     my $domain=shift;
+             }
-     return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
+         }
+     }
+     my $authnum = 0;
+     foreach my $key (keys(%can_assign)) {
+         if ($can_assign{$key}) {
+             $authnum ++;
+         }
+     }
+     if ($can_assign{'krb4'} && $can_assign{'krb5'}) {
+         $authnum --;
+     }
+     return ($authnum,%can_assign);
  }
- ###############################################################
- ##   End Get Authentication Defaults for Domain              ##
- ###############################################################
  ###############################################################
  ##    Get Kerberos Defaults for Domain                 ##
- Line 1749  sub get_auth_defaults {
+ Line 3489  sub get_auth_defaults {
  =pod
- =item * get_kerberos_defaults
+ =item * &get_kerberos_defaults()
  get_kerberos_defaults($target_domain) returns the default kerberos
- version and domain. If not found in domain.tabs, it defaults to
+ version and domain. If not found, it defaults to version 4 and the
- version 4 and the domain of the server.
+ domain of the server.
+ =over 4
  ($def_version, $def_krb_domain) = &get_kerberos_defaults($target_domain);
+ =back
+ =back
  =cut
  #-------------------------------------------
  sub get_kerberos_defaults {
      my $domain=shift;
-     my ($krbdef,$krbdefdom) =
+     my ($krbdef,$krbdefdom);
-         &Apache::loncommon::get_auth_defaults($domain);
+     my %domdefaults = &Apache::lonnet::get_domain_defaults($domain);
-     unless ($krbdef =~/^krb/ && $krbdefdom) {
+     if (($domdefaults{'auth_def'} =~/^krb(4|5)$/) && ($domdefaults{'auth_arg_def'} ne '')) {
+         $krbdef = $domdefaults{'auth_def'};
+         $krbdefdom = $domdefaults{'auth_arg_def'};
+     } else {
          $ENV{'SERVER_NAME'}=~/(\w+\.\w+)$/;
          my $krbdefdom=$1;
          $krbdefdom=~tr/a-z/A-Z/;
- Line 1773  sub get_kerberos_defaults {
+ Line 3522  sub get_kerberos_defaults {
      return ($krbdef,$krbdefdom);
  }
- =pod
- =back
- =cut
  ###############################################################
  ##                Thesaurus Functions                        ##
- Line 1789  sub get_kerberos_defaults {
+ Line 3533  sub get_kerberos_defaults {
  =over 4
- =item * initialize_keywords
+ =item * &initialize_keywords()
  Initializes the package variable %Keywords if it is empty.  Uses the
  package variable $thesaurus_db_file.
- Line 1824  sub initialize_keywords {
+ Line 3568  sub initialize_keywords {
      }
      untie %thesaurus_db;
      # Remove special values from %Keywords.
-     foreach ('total.count','average.count') {
+     foreach my $value ('total.count','average.count') {
-         delete($Keywords{$_}) if (exists($Keywords{$_}));
+         delete($Keywords{$value}) if (exists($Keywords{$value}));
-     }
+   }
      return 1;
  }
- Line 1834  sub initialize_keywords {
+ Line 3578  sub initialize_keywords {
  =pod
- =item * keyword($word)
+ =item * &keyword($word)
  Returns true if $word is a keyword.  A keyword is a word that appears more
  than the average number of times in the thesaurus database.  Calls
- Line 1855  sub keyword {
+ Line 3599  sub keyword {
  =pod
- =item * get_related_words
+ =item * &get_related_words()
  Look up a word in the thesaurus.  Takes a scalar argument and returns
  an array of words.  If the keyword is not in the thesaurus, an empty array
- Line 1864  database which holds them.
+ Line 3608  database which holds them.
  Uses global $thesaurus_db_file.
  =cut
  ###############################################################
- Line 1880  sub get_related_words {
+ Line 3625  sub get_related_words {
          return ();
      }
      my @Words=();
+     my $count=0;
      if (exists($thesaurus_db{$keyword})) {
-         $_ = $thesaurus_db{$keyword};
+ 	# The first element is the number of times
-         (undef,@Words) = split/:/;  # The first element is the number of times
+ 	# the word appears.  We do not need it now.
-                                     # the word appears.  We do not need it now.
+ 	my (undef,@RelatedWords) = (split(/:/,$thesaurus_db{$keyword}));
-         for (my $i=0;$i<=$#Words;$i++) {
+ 	my (undef,$mostfrequentcount)=split(/\,/,$RelatedWords[0]);
-             ($Words[$i],undef)= split/\,/,$Words[$i];
+ 	my $threshold=$mostfrequentcount/10;
+         foreach my $possibleword (@RelatedWords) {
+             my ($word,$wordcount)=split(/\,/,$possibleword);
+             if ($wordcount>$threshold) {
+ 		push(@Words,$word);
+                 $count++;
+                 if ($count>10) { last; }
+ 	    }
          }
      }
      untie %thesaurus_db;
      return @Words;
  }
+ ###############################################################
+ #
+ #  Spell checking
+ #
  =pod
  =back
+ =head1 Spell checking
+ =over 4
+ =item * &check_spelling($wordlist $language)
+ Takes a string containing words and feeds it to an external
+ spellcheck program via a pipeline. Returns a string containing
+ them mis-spelled words.
+ Parameters:
+ =over 4
+ =item - $wordlist
+ String that will be fed into the spellcheck program.
+ =item - $language
+ Language string that specifies the language for which the spell
+ check will be performed.
+ =back
+ =back
+ Note: This sub assumes that aspell is installed.
  =cut
+ sub check_spelling {
+     my ($wordlist, $language) = @_;
+     my @misspellings;
+     # Generate the speller and set the langauge.
+     # if explicitly selected:
+     my $speller = Text::Aspell->new;
+     if ($language) {
+ 	$speller->set_option('lang', $language);
+     }
+     # Turn the word list into an array of words by splittingon whitespace
+     my @words = split(/\s+/, $wordlist);
+     foreach my $word (@words) {
+ 	if(! $speller->check($word)) {
+ 	    push(@misspellings, $word);
+ 	}
+     }
+     return join(' ', @misspellings);
+ }
  # -------------------------------------------------------------- Plaintext name
  =pod
- Line 1905  sub get_related_words {
+ Line 3718  sub get_related_words {
  =over 4
- =item * plainname($uname,$udom,$first)
+ =item * &plainname($uname,$udom,$first)
  Takes a users logon name and returns it as a string in
  "first middle last generation" form
- Line 1914  if $first is set to 'lastname' then it r
+ Line 3727  if $first is set to 'lastname' then it r
  =cut
  ###############################################################
  sub plainname {
      my ($uname,$udom,$first)=@_;
-     my %names=&Apache::lonnet::get('environment',
+     return if (!defined($uname) || !defined($udom));
-                     ['firstname','middlename','lastname','generation'],
+     my %names=&getnames($uname,$udom);
- 					 $udom,$uname);
      my $name=&Apache::lonnet::format_name($names{'firstname'},
  					  $names{'middlename'},
  					  $names{'lastname'},
- Line 1927  sub plainname {
+ Line 3740  sub plainname {
      $name=~s/^\s+//;
      $name=~s/\s+$//;
      $name=~s/\s+/ /g;
-     if ($name !~ /\S/) { $name=$uname.'@'.$udom; }
+     if ($name !~ /\S/) { $name=$uname.':'.$udom; }
      return $name;
  }
  # -------------------------------------------------------------------- Nickname
  =pod
- =item * nickname($uname,$udom)
+ =item * &nickname($uname,$udom)
  Gets a users name and returns it as a string as
- Line 1950  if the user does not
+ Line 3763  if the user does not
  sub nickname {
      my ($uname,$udom)=@_;
-     my %names;
+     return if (!defined($uname) || !defined($udom));
-     if ($uname eq $env{'user.name'} &&
+     my %names=&getnames($uname,$udom);
- 	$udom eq $env{'user.domain'}) {
- 	%names=('nickname'   => $env{'environment.nickname'}  ,
- 		'firstname'  => $env{'environment.firstname'} ,
- 		'middlename' => $env{'environment.middlename'},
- 		'lastname'   => $env{'environment.lastname'}  ,
- 		'generation' => $env{'environment.generation'});
-     } else {
- 	%names=&Apache::lonnet::get('environment',
- 				    ['nickname','firstname','middlename',
- 				     'lastname','generation'],$udom,$uname);
-     }
      my $name=$names{'nickname'};
      if ($name) {
         $name='&quot;'.$name.'&quot;';
- Line 1975  sub nickname {
+ Line 3777  sub nickname {
      return $name;
  }
+ sub getnames {
+     my ($uname,$udom)=@_;
+     return if (!defined($uname) || !defined($udom));
+     if ($udom eq 'public' && $uname eq 'public') {
+ 	return ('lastname' => &mt('Public'));
+     }
+     my $id=$uname.':'.$udom;
+     my ($names,$cached)=&Apache::lonnet::is_cached_new('namescache',$id);
+     if ($cached) {
+ 	return %{$names};
+     } else {
+ 	my %loadnames=&Apache::lonnet::get('environment',
+                     ['firstname','middlename','lastname','generation','nickname'],
+ 					 $udom,$uname);
+ 	&Apache::lonnet::do_cache_new('namescache',$id,\%loadnames);
+ 	return %loadnames;
+     }
+ }
+ # -------------------------------------------------------------------- getemails
+ =pod
+ =item * &getemails($uname,$udom)
+ Gets a user's email information and returns it as a hash with keys:
+ notification, critnotification, permanentemail
+ For notification and critnotification, values are comma-separated lists
+ of e-mail addresses; for permanentemail, value is a single e-mail address.
+ =cut
+ sub getemails {
+     my ($uname,$udom)=@_;
+     if ($udom eq 'public' && $uname eq 'public') {
+ 	return;
+     }
+     if (!$udom) { $udom=$env{'user.domain'}; }
+     if (!$uname) { $uname=$env{'user.name'}; }
+     my $id=$uname.':'.$udom;
+     my ($names,$cached)=&Apache::lonnet::is_cached_new('emailscache',$id);
+     if ($cached) {
+ 	return %{$names};
+     } else {
+ 	my %loadnames=&Apache::lonnet::get('environment',
+                     			   ['notification','critnotification',
+ 					    'permanentemail'],
+ 					   $udom,$uname);
+ 	&Apache::lonnet::do_cache_new('emailscache',$id,\%loadnames);
+ 	return %loadnames;
+     }
+ }
+ sub flush_email_cache {
+     my ($uname,$udom)=@_;
+     if (!$udom)  { $udom =$env{'user.domain'}; }
+     if (!$uname) { $uname=$env{'user.name'};   }
+     return if ($udom eq 'public' && $uname eq 'public');
+     my $id=$uname.':'.$udom;
+     &Apache::lonnet::devalidate_cache_new('emailscache',$id);
+ }
+ # -------------------------------------------------------------------- getlangs
+ =pod
+ =item * &getlangs($uname,$udom)
+ Gets a user's language preference and returns it as a hash with key:
+ language.
+ =cut
+ sub getlangs {
+     my ($uname,$udom) = @_;
+     if (!$udom)  { $udom =$env{'user.domain'}; }
+     if (!$uname) { $uname=$env{'user.name'};   }
+     my $id=$uname.':'.$udom;
+     my ($langs,$cached)=&Apache::lonnet::is_cached_new('userlangs',$id);
+     if ($cached) {
+         return %{$langs};
+     } else {
+         my %loadlangs=&Apache::lonnet::get('environment',['languages'],
+                                            $udom,$uname);
+         &Apache::lonnet::do_cache_new('userlangs',$id,\%loadlangs);
+         return %loadlangs;
+     }
+ }
+ sub flush_langs_cache {
+     my ($uname,$udom)=@_;
+     if (!$udom)  { $udom =$env{'user.domain'}; }
+     if (!$uname) { $uname=$env{'user.name'};   }
+     return if ($udom eq 'public' && $uname eq 'public');
+     my $id=$uname.':'.$udom;
+     &Apache::lonnet::devalidate_cache_new('userlangs',$id);
+ }
  # ------------------------------------------------------------------ Screenname
  =pod
- =item * screenname($uname,$udom)
+ =item * &screenname($uname,$udom)
  Gets a users screenname and returns it as a string
- Line 1995  sub screenname {
+ Line 3898  sub screenname {
  }
+ # ------------------------------------------------------------- Confirm Wrapper
+ =pod
+ =item * &confirmwrapper($message)
+ Wrap messages about completion of operation in box
+ =cut
+ sub confirmwrapper {
+     my ($message)=@_;
+     if ($message) {
+         return "\n".'<div class="LC_confirm_box">'."\n"
+                .$message."\n"
+                .'</div>'."\n";
+     } else {
+         return $message;
+     }
+ }
  # ------------------------------------------------------------- Message Wrapper
  sub messagewrapper {
-     my ($link,$username,$domain)=@_;
+     my ($link,$username,$domain,$subject,$text)=@_;
      return
-         '<a href="/adm/email?compose=individual&'.
+         '<a href="/adm/email?compose=individual&amp;'.
-         'recname='.$username.'&recdom='.$domain.'" '.
+         'recname='.$username.'&amp;recdom='.$domain.
+ 	'&amp;subject='.&escape($subject).'&amp;text='.&escape($text).'" '.
          'title="'.&mt('Send message').'">'.$link.'</a>';
  }
  # --------------------------------------------------------------- Notes Wrapper
  sub noteswrapper {
      my ($link,$un,$do)=@_;
      return
- "<a href='/adm/email?recordftf=retrieve&recname=$un&recdom=$do'>$link</a>";
+ "<a href='/adm/email?recordftf=retrieve&amp;recname=$un&amp;recdom=$do'>$link</a>";
  }
  # ------------------------------------------------------------- Aboutme Wrapper
  sub aboutmewrapper {
-     my ($link,$username,$domain,$target)=@_;
+     my ($link,$username,$domain,$target,$class)=@_;
+     if (!defined($username)  && !defined($domain)) {
+         return;
+     }
      return '<a href="/adm/'.$domain.'/'.$username.'/aboutme"'.
- 	($target?' target="$target"':'').' title="'.&mt('View this users personal page').'">'.$link.'</a>';
+ 	($target?' target="'.$target.'"':'').($class?' class="'.$class.'"':'').' title="'.&mt("View this user's personal information page").'">'.$link.'</a>';
  }
  # ------------------------------------------------------------ Syllabus Wrapper
  sub syllabuswrapper {
-     my ($linktext,$coursedir,$domain,$fontcolor)=@_;
+     my ($linktext,$coursedir,$domain)=@_;
-     if ($fontcolor) {
-         $linktext='<font color="'.$fontcolor.'">'.$linktext.'</font>';
-     }
      return qq{<a href="/public/$domain/$coursedir/syllabus">$linktext</a>};
  }
+ # -----------------------------------------------------------------------------
  sub track_student_link {
-     my ($linktext,$sname,$sdom,$target,$start) = @_;
+     my ($linktext,$sname,$sdom,$target,$start,$only_body) = @_;
      my $link ="/adm/trackstudent?";
      my $title = 'View recent activity';
      if (defined($sname) && $sname !~ /^\s*$/ &&
- Line 2045  sub track_student_link {
+ Line 3972  sub track_student_link {
          $target = '';
      }
      if ($start) { $link.='&amp;start='.$start; }
+     if ($only_body) { $link .= '&amp;only_body=1'; }
+     $title = &mt($title);
+     $linktext = &mt($linktext);
+     return qq{<a href="$link" title="$title" $target>$linktext</a>}.
+ 	&help_open_topic('View_recent_activity');
+ }
+ sub slot_reservations_link {
+     my ($linktext,$sname,$sdom,$target) = @_;
+     my $link ="/adm/slotrequest?command=showresv&amp;origin=aboutme";
+     my $title = 'View slot reservation history';
+     if (defined($sname) && $sname !~ /^\s*$/ &&
+         defined($sdom)  && $sdom  !~ /^\s*$/) {
+         $link .= "&amp;uname=$sname&amp;udom=$sdom";
+         $title .= ' of this student';
+     }
+     if (defined($target) && $target !~ /^\s*$/) {
+         $target = qq{target="$target"};
+     } else {
+         $target = '';
+     }
+     $title = &mt($title);
+     $linktext = &mt($linktext);
      return qq{<a href="$link" title="$title" $target>$linktext</a>};
+ # FIXME uncomment when help item created: &help_open_topic('Slot_Reservation_History');
+ }
+ # ===================================================== Display a student photo
+ sub student_image_tag {
+     my ($domain,$user)=@_;
+     my $imgsrc=&Apache::lonnet::studentphoto($domain,$user,'jpg');
+     if (($imgsrc) && ($imgsrc ne '/adm/lonKaputt/lonlogo_broken.gif')) {
+ 	return '<img src="'.$imgsrc.'" align="right" />';
+     } else {
+ 	return '';
+     }
  }
  =pod
- Line 2056  sub track_student_link {
+ Line 4021  sub track_student_link {
  =over 4
- =item * languageids()
+ =item * &languageids()
  returns list of all language ids
- Line 2068  sub languageids {
+ Line 4033  sub languageids {
  =pod
- =item * languagedescription()
+ =item * &languagedescription()
  returns description of a specified language id
- Line 2081  sub languagedescription {
+ Line 4046  sub languagedescription {
  	    ($supported_language{$code}?' ('.&mt('interface available').')':'');
  }
+ =pod
+ =item * &plainlanguagedescription
+ Returns both the plain language description (e.g. 'Creoles and Pidgins, English-based (Other)')
+ and the language character encoding (e.g. ISO) separated by a ' - ' string.
+ =cut
  sub plainlanguagedescription {
      my $code=shift;
      return $language{$code};
  }
+ =pod
+ =item * &supportedlanguagecode
+ Returns the supported language code (e.g. sptutf maps to pt) given a language
+ code.
+ =cut
  sub supportedlanguagecode {
      my $code=shift;
      return $supported_language{$code};
- Line 2093  sub supportedlanguagecode {
+ Line 4076  sub supportedlanguagecode {
  =pod
- =item * copyrightids()
+ =item * &latexlanguage()
+ Given a language key code returns the correspondnig language to use
+ to select the correct hyphenation on LaTeX printouts.  This is undef if there
+ is no supported hyphenation for the language code.
+ =cut
+ sub latexlanguage {
+     my $code = shift;
+     return $latex_language{$code};
+ }
+ =pod
+ =item * &latexhyphenation()
+ Same as above but what's supplied is the language as it might be stored
+ in the metadata.
+ =cut
+ sub latexhyphenation {
+     my $key = shift;
+     return $latex_language_bykey{$key};
+ }
+ =pod
+ =item * &copyrightids()
  returns list of all copyrights
- Line 2105  sub copyrightids {
+ Line 4117  sub copyrightids {
  =pod
- =item * copyrightdescription()
+ =item * &copyrightdescription()
  returns description of a specified copyright id
- Line 2117  sub copyrightdescription {
+ Line 4129  sub copyrightdescription {
  =pod
- =item * source_copyrightids()
+ =item * &source_copyrightids()
  returns list of all source copyrights
- Line 2129  sub source_copyrightids {
+ Line 4141  sub source_copyrightids {
  =pod
- =item * source_copyrightdescription()
+ =item * &source_copyrightdescription()
  returns description of a specified source copyright id
- Line 2141  sub source_copyrightdescription {
+ Line 4153  sub source_copyrightdescription {
  =pod
- =item * filecategories()
+ =item * &filecategories()
  returns list of all file categories
- Line 2153  sub filecategories {
+ Line 4165  sub filecategories {
  =pod
- =item * filecategorytypes()
+ =item * &filecategorytypes()
  returns list of file types belonging to a given file
  category
- Line 2161  category
+ Line 4173  category
  =cut
  sub filecategorytypes {
-     return @{$category_extensions{lc($_[0])}};
+     my ($cat) = @_;
+     if (ref($category_extensions{lc($cat)}) eq 'ARRAY') {
+         return @{$category_extensions{lc($cat)}};
+     } else {
+         return ();
+     }
  }
  =pod
- =item * fileembstyle()
+ =item * &fileembstyle()
  returns embedding style for a specified file type
- Line 2176  sub fileembstyle {
+ Line 4193  sub fileembstyle {
      return $fe{lc(shift(@_))};
  }
+ sub filemimetype {
+     return $fm{lc(shift(@_))};
+ }
  sub filecategoryselect {
      my ($name,$value)=@_;
      return &select_form($value,$name,
- 			'' => &mt('Any category'),
+                         {'' => &mt('Any category'), map { $_,$_ } sort(keys(%category_extensions))});
- 			map { $_,$_ } sort(keys(%category_extensions)));
  }
  =pod
- =item * filedescription()
+ =item * &filedescription()
  returns description for a specified file type
- Line 2200  sub filedescription {
+ Line 4220  sub filedescription {
  =pod
- =item * filedescriptionex()
+ =item * &filedescriptionex()
  returns description for a specified file type with
  extra formatting
- Line 2232  sub fileextensions {
+ Line 4252  sub fileextensions {
  sub display_languages {
      my %languages=();
-     foreach (&preferred_languages()) {
+     foreach my $lang (&Apache::lonlocal::preferred_languages()) {
- 	$languages{$_}=1;
+ 	$languages{$lang}=1;
      }
      &get_unprocessed_cgi($ENV{'QUERY_STRING'},['displaylanguage']);
      if ($env{'form.displaylanguage'}) {
- 	foreach (split(/\s*(\,|\;|\:)\s*/,$env{'form.displaylanguage'})) {
+ 	foreach my $lang (split(/\s*(\,|\;|\:)\s*/,$env{'form.displaylanguage'})) {
- 	    $languages{$_}=1;
+ 	    $languages{$lang}=1;
          }
      }
      return %languages;
  }
- sub preferred_languages {
+ sub languages {
-     my @languages=();
+     my ($possible_langs) = @_;
-     if ($env{'course.'.$env{'request.course.id'}.'.languages'}) {
+     my @preferred_langs = &Apache::lonlocal::preferred_languages();
- 	@languages=(@languages,split(/\s*(\,|\;|\:)\s*/,
+     if (!ref($possible_langs)) {
- 	         $env{'course.'.$env{'request.course.id'}.'.languages'}));
+ 	if( wantarray ) {
-     }
+ 	    return @preferred_langs;
-     if ($env{'environment.languages'}) {
+ 	} else {
- 	@languages=split(/\s*(\,|\;|\:)\s*/,$env{'environment.languages'});
+ 	    return $preferred_langs[0];
-     }
+ 	}
-     my $browser=(split(/\;/,$ENV{'HTTP_ACCEPT_LANGUAGE'}))[0];
+     }
-     if ($browser) {
+     my %possibilities = map { $_ => 1 } (@$possible_langs);
- 	@languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
+     my @preferred_possibilities;
-     }
+     foreach my $preferred_lang (@preferred_langs) {
-     if ($Apache::lonnet::domain_lang_def{$env{'user.domain'}}) {
+ 	if (exists($possibilities{$preferred_lang})) {
- 	@languages=(@languages,
+ 	    push(@preferred_possibilities, $preferred_lang);
- 		$Apache::lonnet::domain_lang_def{$env{'user.domain'}});
-     }
-     if ($Apache::lonnet::domain_lang_def{$env{'request.role.domain'}}) {
- 	@languages=(@languages,
- 		$Apache::lonnet::domain_lang_def{$env{'request.role.domain'}});
-     }
-     if ($Apache::lonnet::domain_lang_def{
- 	                          $Apache::lonnet::perlvar{'lonDefDomain'}}) {
- 	@languages=(@languages,
- 		$Apache::lonnet::domain_lang_def{
-                                   $Apache::lonnet::perlvar{'lonDefDomain'}});
-     }
- # turn "en-ca" into "en-ca,en"
-     my @genlanguages;
-     foreach (@languages) {
- 	unless ($_=~/\w/) { next; }
- 	push (@genlanguages,$_);
- 	if ($_=~/(\-|\_)/) {
- 	    push (@genlanguages,(split(/(\-|\_)/,$_))[0]);
  	}
      }
-     return @genlanguages;
+     if( wantarray ) {
+ 	return @preferred_possibilities;
+     }
+     return $preferred_possibilities[0];
+ }
+ sub user_lang {
+     my ($touname,$toudom,$fromcid) = @_;
+     my @userlangs;
+     if (($fromcid ne '') && ($env{'course.'.$fromcid.'.languages'} ne '')) {
+         @userlangs=(@userlangs,split(/\s*(\,|\;|\:)\s*/,
+                     $env{'course.'.$fromcid.'.languages'}));
+     } else {
+         my %langhash = &getlangs($touname,$toudom);
+         if ($langhash{'languages'} ne '') {
+             @userlangs = split(/\s*(\,|\;|\:)\s*/,$langhash{'languages'});
+         } else {
+             my %domdefs = &Apache::lonnet::get_domain_defaults($toudom);
+             if ($domdefs{'lang_def'} ne '') {
+                 @userlangs = ($domdefs{'lang_def'});
+             }
+         }
+     }
+     my @languages=&Apache::lonlocal::get_genlanguages(@userlangs);
+     my $user_lh = Apache::localize->get_handle(@languages);
+     return $user_lh;
  }
  ###############################################################
  ##               Student Answer Attempts                     ##
  ###############################################################
- Line 2293  sub preferred_languages {
+ Line 4320  sub preferred_languages {
  =over 4
- =item * get_previous_attempt($symb, $username, $domain, $course,
+ =item * &get_previous_attempt($symb, $username, $domain, $course,
-     $getattempt, $regexp, $gradesub)
+     $getattempt, $regexp, $gradesub, $usec, $identifier)
  Return string with previous attempt on problem. Arguments:
- Line 2316  Return string with previous attempt on p
+ Line 4343  Return string with previous attempt on p
  =item * $gradesub: routine that processes the string if it matches $regexp
+ =item * $usec: section of the desired student
+ =item * $identifier: counter for student (multiple students one problem) or
+     problem (one student; whole sequence).
  =back
  The output string is a table containing all desired attempts, if any.
- Line 2323  The output string is a table containing
+ Line 4355  The output string is a table containing
  =cut
  sub get_previous_attempt {
-   my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub)=@_;
+   my ($symb,$username,$domain,$course,$getattempt,$regexp,$gradesub,$usec,$identifier)=@_;
    my $prevattempts='';
    no strict 'refs';
    if ($symb) {
- Line 2333  sub get_previous_attempt {
+ Line 4365  sub get_previous_attempt {
        my %lasthash=();
        my $version;
        for ($version=1;$version<=$returnhash{'version'};$version++) {
-         foreach (sort(split(/\:/,$returnhash{$version.':keys'}))) {
+         foreach my $key (reverse(sort(split(/\:/,$returnhash{$version.':keys'})))) {
- 	  $lasthash{$_}=$returnhash{$version.':'.$_};
+             if ($key =~ /\.rawrndseed$/) {
+                 my ($id) = ($key =~ /^(.+)\.rawrndseed$/);
+                 $lasthash{$id.'.rndseed'} = $returnhash{$version.':'.$key};
+             } else {
+                 $lasthash{$key}=$returnhash{$version.':'.$key};
+             }
          }
        }
-       $prevattempts='<table border="0" width="100%"><tr><td bgcolor="#777777">';
+       $prevattempts=&start_data_table().&start_data_table_header_row();
-       $prevattempts.='<table border="0" width="100%"><tr bgcolor="#e6ffff"><td>History</td>';
+       $prevattempts.='<th>'.&mt('History').'</th>';
-       foreach (sort(keys %lasthash)) {
+       my (%typeparts,%lasthidden,%regraded,%hidestatus);
- 	my ($ign,@parts) = split(/\./,$_);
+       my $showsurv=&Apache::lonnet::allowed('vas',$env{'request.course.id'});
+       foreach my $key (sort(keys(%lasthash))) {
+ 	my ($ign,@parts) = split(/\./,$key);
  	if ($#parts > 0) {
  	  my $data=$parts[-1];
+           next if ($data eq 'foilorder');
  	  pop(@parts);
- 	  $prevattempts.='<td>Part '.join('.',@parts).'<br />'.$data.'&nbsp;</td>';
+           $prevattempts.='<th>'.&mt('Part ').join('.',@parts).'<br />'.$data.'&nbsp;</th>';
+           if ($data eq 'type') {
+               unless ($showsurv) {
+                   my $id = join(',',@parts);
+                   $typeparts{$ign.'.'.$id} = $lasthash{$key};
+                   if (($lasthash{$key} eq 'anonsurvey') || ($lasthash{$key} eq 'anonsurveycred')) {
+                       $lasthidden{$ign.'.'.$id} = 1;
+                   }
+               }
+               if ($identifier ne '') {
+                   my $id = join(',',@parts);
+                   if (&Apache::lonnet::EXT("resource.$id.problemstatus",$symb,
+                                                $domain,$username,$usec,undef,$course) =~ /^no/) {
+                       $hidestatus{$ign.'.'.$id} = 1;
+                   }
+               }
+           } elsif ($data eq 'regrader') {
+               if (($identifier ne '') && (@parts)) {
+                   my $id = join(',',@parts);
+                   $regraded{$ign.'.'.$id} = 1;
+               }
+           }
  	} else {
  	  if ($#parts == 0) {
  	    $prevattempts.='<th>'.$parts[0].'</th>';
- Line 2353  sub get_previous_attempt {
+ Line 4414  sub get_previous_attempt {
  	  }
  	}
        }
+       $prevattempts.=&end_data_table_header_row();
        if ($getattempt eq '') {
+         my (%solved,%resets,%probstatus);
+         if (($identifier ne '') && (keys(%regraded) > 0)) {
+             for ($version=1;$version<=$returnhash{'version'};$version++) {
+                 foreach my $id (keys(%regraded)) {
+                     if (($returnhash{$version.':'.$id.'.regrader'}) &&
+                         ($returnhash{$version.':'.$id.'.tries'} eq '') &&
+                         ($returnhash{$version.':'.$id.'.award'} eq '')) {
+                         push(@{$resets{$id}},$version);
+                     }
+                 }
+             }
+         }
  	for ($version=1;$version<=$returnhash{'version'};$version++) {
- 	  $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Transaction '.$version.'</td>';
+             my (@hidden,@unsolved);
- 	    foreach (sort(keys %lasthash)) {
+             if (%typeparts) {
- 	       my $value;
+                 foreach my $id (keys(%typeparts)) {
- 	       if ($_ =~ /timestamp/) {
+                     if (($returnhash{$version.':'.$id.'.type'} eq 'anonsurvey') ||
- 		  $value=scalar(localtime($returnhash{$version.':'.$_}));
+                         ($returnhash{$version.':'.$id.'.type'} eq 'anonsurveycred')) {
- 	       } else {
+                         push(@hidden,$id);
- 		  $value=$returnhash{$version.':'.$_};
+                     } elsif ($identifier ne '') {
- 	       }
+                         unless (($returnhash{$version.':'.$id.'.type'} eq 'survey') ||
- 	       $prevattempts.='<td>'.&Apache::lonnet::unescape($value).'&nbsp;</td>';
+                                 ($returnhash{$version.':'.$id.'.type'} eq 'surveycred') ||
- 	    }
+                                 ($hidestatus{$id})) {
+                             next if ((ref($resets{$id}) eq 'ARRAY') && grep(/^\Q$version\E$/,@{$resets{$id}}));
+                             if ($returnhash{$version.':'.$id.'.solved'} eq 'correct_by_student') {
+                                 push(@{$solved{$id}},$version);
+                             } elsif (($returnhash{$version.':'.$id.'.solved'} ne '') &&
+                                      (ref($solved{$id}) eq 'ARRAY')) {
+                                 my $skip;
+                                 if (ref($resets{$id}) eq 'ARRAY') {
+                                     foreach my $reset (@{$resets{$id}}) {
+                                         if ($reset > $solved{$id}[-1]) {
+                                             $skip=1;
+                                             last;
+                                         }
+                                     }
+                                 }
+                                 unless ($skip) {
+                                     my ($ign,$partslist) = split(/\./,$id,2);
+                                     push(@unsolved,$partslist);
+                                 }
+                             }
+                         }
+                     }
+                 }
+             }
+             $prevattempts.=&start_data_table_row().
+                            '<td>'.&mt('Transaction [_1]',$version);
+             if (@unsolved) {
+                 $prevattempts .= '<span class="LC_nobreak"><label>'.
+                                  '<input type="checkbox" name="HIDE'.$identifier.'" value="'.$version.':'.join('_',@unsolved).'" />'.
+                                  &mt('Hide').'</label></span>';
+             }
+             $prevattempts .= '</td>';
+             if (@hidden) {
+                 foreach my $key (sort(keys(%lasthash))) {
+                     next if ($key =~ /\.foilorder$/);
+                     my $hide;
+                     foreach my $id (@hidden) {
+                         if ($key =~ /^\Q$id\E/) {
+                             $hide = 1;
+                             last;
+                         }
+                     }
+                     if ($hide) {
+                         my ($id,$data) = ($key =~ /^(.+)\.([^.]+)$/);
+                         if (($data eq 'award') || ($data eq 'awarddetail')) {
+                             my $value = &format_previous_attempt_value($key,
+                                              $returnhash{$version.':'.$key});
+                             $prevattempts.='<td>'.$value.'&nbsp;</td>';
+                         } else {
+                             $prevattempts.='<td>&nbsp;</td>';
+                         }
+                     } else {
+                         if ($key =~ /\./) {
+                             my $value = $returnhash{$version.':'.$key};
+                             if ($key =~ /\.rndseed$/) {
+                                 my ($id) = ($key =~ /^(.+)\.[^.]+$/);
+                                 if (exists($returnhash{$version.':'.$id.'.rawrndseed'})) {
+                                     $value = $returnhash{$version.':'.$id.'.rawrndseed'};
+                                 }
+                             }
+                             $prevattempts.='<td>'.&format_previous_attempt_value($key,$value).
+                                            '&nbsp;</td>';
+                         } else {
+                             $prevattempts.='<td>&nbsp;</td>';
+                         }
+                     }
+                 }
+             } else {
+ 	        foreach my $key (sort(keys(%lasthash))) {
+                     next if ($key =~ /\.foilorder$/);
+                     my $value = $returnhash{$version.':'.$key};
+                     if ($key =~ /\.rndseed$/) {
+                         my ($id) = ($key =~ /^(.+)\.[^.]+$/);
+                         if (exists($returnhash{$version.':'.$id.'.rawrndseed'})) {
+                             $value = $returnhash{$version.':'.$id.'.rawrndseed'};
+                         }
+                     }
+                     $prevattempts.='<td>'.&format_previous_attempt_value($key,$value).
+                                    '&nbsp;</td>';
+ 	        }
+             }
+ 	    $prevattempts.=&end_data_table_row();
  	 }
        }
-       $prevattempts.='</tr><tr bgcolor="#ffffe6"><td>Current</td>';
+       my @currhidden = keys(%lasthidden);
-       foreach (sort(keys %lasthash)) {
+       $prevattempts.=&start_data_table_row().'<td>'.&mt('Current').'</td>';
- 	my $value;
+       foreach my $key (sort(keys(%lasthash))) {
- 	if ($_ =~ /timestamp/) {
+           next if ($key =~ /\.foilorder$/);
- 	  $value=scalar(localtime($lasthash{$_}));
+           if (%typeparts) {
- 	} else {
+               my $hidden;
- 	  $value=$lasthash{$_};
+               foreach my $id (@currhidden) {
- 	}
+                   if ($key =~ /^\Q$id\E/) {
- 	$value=&Apache::lonnet::unescape($value);
+                       $hidden = 1;
- 	if ($_ =~/$regexp$/ && (defined &$gradesub)) {$value = &$gradesub($value)}
+                       last;
- 	$prevattempts.='<td>'.$value.'&nbsp;</td>';
+                   }
+               }
+               if ($hidden) {
+                   my ($id,$data) = ($key =~ /^(.+)\.([^.]+)$/);
+                   if (($data eq 'award') || ($data eq 'awarddetail')) {
+                       my $value = &format_previous_attempt_value($key,$lasthash{$key});
+                       if ($key =~/$regexp$/ && (defined &$gradesub)) {
+                           $value = &$gradesub($value);
+                       }
+                       $prevattempts.='<td>'. $value.'&nbsp;</td>';
+                   } else {
+                       $prevattempts.='<td>&nbsp;</td>';
+                   }
+               } else {
+                   my $value = &format_previous_attempt_value($key,$lasthash{$key});
+                   if ($key =~/$regexp$/ && (defined &$gradesub)) {
+                       $value = &$gradesub($value);
+                   }
+                   $prevattempts.='<td>'.$value.'&nbsp;</td>';
+               }
+           } else {
+ 	      my $value = &format_previous_attempt_value($key,$lasthash{$key});
+ 	      if ($key =~/$regexp$/ && (defined &$gradesub)) {
+                   $value = &$gradesub($value);
+               }
+ 	     $prevattempts.='<td>'.$value.'&nbsp;</td>';
+           }
        }
-       $prevattempts.='</tr></table></td></tr></table>';
+       $prevattempts.= &end_data_table_row().&end_data_table();
      } else {
-       $prevattempts='Nothing submitted - no attempts.';
+       $prevattempts=
+ 	  &start_data_table().&start_data_table_row().
+ 	  '<td>'.&mt('Nothing submitted - no attempts.').'</td>'.
+ 	  &end_data_table_row().&end_data_table();
      }
    } else {
-     $prevattempts='No data.';
+     $prevattempts=
+ 	  &start_data_table().&start_data_table_row().
+ 	  '<td>'.&mt('No data.').'</td>'.
+ 	  &end_data_table_row().&end_data_table();
    }
  }
+ sub format_previous_attempt_value {
+     my ($key,$value) = @_;
+     if (($key =~ /timestamp/) || ($key=~/duedate/)) {
+         $value = &Apache::lonlocal::locallocaltime($value);
+     } elsif (ref($value) eq 'ARRAY') {
+         $value = &HTML::Entities::encode('('.join(', ', @{ $value }).')','"<>&');
+     } elsif ($key =~ /answerstring$/) {
+         my %answers = &Apache::lonnet::str2hash($value);
+         my @answer = %answers;
+         %answers = map {&HTML::Entities::encode($_, '"<>&')} @answer;
+         my @anskeys = sort(keys(%answers));
+         if (@anskeys == 1) {
+             my $answer = $answers{$anskeys[0]};
+             if ($answer =~ m{\0}) {
+                 $answer =~ s{\0}{,}g;
+             }
+             my $tag_internal_answer_name = 'INTERNAL';
+             if ($anskeys[0] eq $tag_internal_answer_name) {
+                 $value = $answer;
+             } else {
+                 $value = $anskeys[0].'='.$answer;
+             }
+         } else {
+             foreach my $ans (@anskeys) {
+                 my $answer = $answers{$ans};
+                 if ($answer =~ m{\0}) {
+                     $answer =~ s{\0}{,}g;
+                 }
+                 $value .=  $ans.'='.$answer.'<br />';;
+             }
+         }
+     } else {
+         $value = &HTML::Entities::encode(&unescape($value), '"<>&');
+     }
+     return $value;
+ }
  sub relative_to_absolute {
      my ($url,$output)=@_;
      my $parser=HTML::TokeParser->new(\$output);
- Line 2408  sub relative_to_absolute {
+ Line 4633  sub relative_to_absolute {
  	}
      }
      $thisdir=~s-/[^/]*$--;
-     foreach (@rlinks) {
+     foreach my $link (@rlinks) {
- 	unless (($_=~/^http:\/\//i) ||
+ 	unless (($link=~/^https?\:\/\//i) ||
- 		($_=~/^\//) ||
+ 		($link=~/^\//) ||
- 		($_=~/^javascript:/i) ||
+ 		($link=~/^javascript:/i) ||
- 		($_=~/^mailto:/i) ||
+ 		($link=~/^mailto:/i) ||
- 		($_=~/^\#/)) {
+ 		($link=~/^\#/)) {
- 	    my $newlocation=&Apache::lonnet::hreflocation($thisdir,$_);
+ 	    my $newlocation=&Apache::lonnet::hreflocation($thisdir,$link);
- 	    $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
+ 	    $output=~s/(\"|\'|\=\s*)\Q$link\E(\"|\'|\s|\>)/$1$newlocation$2/;
  	}
      }
  # -------------------------------------------------- Deal with Applet codebases
- Line 2425  sub relative_to_absolute {
+ Line 4650  sub relative_to_absolute {
  =pod
- =item * get_student_view
+ =item * &get_student_view()
  show a snapshot of what student was looking at
- Line 2444  sub get_student_view {
+ Line 4669  sub get_student_view {
    }
    if (defined($target)) { $form{'grade_target'} = $target; }
    $feedurl=&Apache::lonnet::clutter($feedurl);
-   my $userview=&Apache::lonnet::ssi_body($feedurl,%form);
+   my ($userview,$response)=&Apache::lonnet::ssi_body($feedurl,%form);
    $userview=~s/\<body[^\>]*\>//gi;
    $userview=~s/\<\/body\>//gi;
    $userview=~s/\<html\>//gi;
- Line 2453  sub get_student_view {
+ Line 4678  sub get_student_view {
    $userview=~s/\<\/head\>//gi;
    $userview=~s/action\s*\=/would_be_action\=/gi;
    $userview=&relative_to_absolute($feedurl,$userview);
-   return $userview;
+   if (wantarray) {
+      return ($userview,$response);
+   } else {
+      return $userview;
+   }
+ }
+ sub get_student_view_with_retries {
+   my ($symb,$retries,$username,$domain,$courseid,$target,$moreenv) = @_;
+     my $ok = 0;                 # True if we got a good response.
+     my $content;
+     my $response;
+     # Try to get the student_view done. within the retries count:
+     do {
+          ($content, $response) = &get_student_view($symb,$username,$domain,$courseid,$target,$moreenv);
+          $ok      = $response->is_success;
+          if (!$ok) {
+             &Apache::lonnet::logthis("Failed get_student_view_with_retries on $symb: ".$response->is_success.', '.$response->code.', '.$response->message);
+          }
+          $retries--;
+     } while (!$ok && ($retries > 0));
+     if (!$ok) {
+        $content = '';          # On error return an empty content.
+     }
+     if (wantarray) {
+        return ($content, $response);
+     } else {
+        return $content;
+     }
  }
  =pod
- =item * get_student_answers()
+ =item * &get_student_answers()
  show a snapshot of how student was answering problem
- Line 2474  sub get_student_answers {
+ Line 4731  sub get_student_answers {
    }
    $moreenv{'grade_target'}='answer';
    %moreenv=(%form,%moreenv);
-   my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%moreenv);
+   $feedurl = &Apache::lonnet::clutter($feedurl);
+   my $userview=&Apache::lonnet::ssi($feedurl,%moreenv);
    return $userview;
  }
- Line 2493  sub submlink {
+ Line 4751  sub submlink {
      my ($text,$uname,$udom,$symb,$target)=@_;
      if (!($uname && $udom)) {
  	(my $cursymb, my $courseid,$udom,$uname)=
- 	    &Apache::lonxml::whichuser($symb);
+ 	    &Apache::lonnet::whichuser($symb);
  	if (!$symb) { $symb=$cursymb; }
      }
      if (!$symb) { $symb=&Apache::lonnet::symbread(); }
-     $symb=&Apache::lonnet::escape($symb);
+     $symb=&escape($symb);
-     if ($target) { $target="target=\"$target\""; }
+     if ($target) { $target=" target=\"$target\""; }
-     return '<a href="/adm/grades?&command=submission&'.
+     return
- 	'symb='.$symb.'&student='.$uname.
+         '<a href="/adm/grades?command=submission'.
- 	'&userdom='.$udom.'" '.$target.'>'.$text.'</a>';
+         '&amp;symb='.$symb.
+         '&amp;student='.$uname.
+         '&amp;userdom='.$udom.'"'.
+         $target.'>'.$text.'</a>';
  }
  ##############################################
- Line 2539  sub pprmlink {
+ Line 4800  sub pprmlink {
      my ($text,$uname,$udom,$symb,$target)=@_;
      if (!($uname && $udom)) {
  	(my $cursymb, my $courseid,$udom,$uname)=
- 	    &Apache::lonxml::whichuser($symb);
+ 	    &Apache::lonnet::whichuser($symb);
  	if (!$symb) { $symb=$cursymb; }
      }
      if (!$symb) { $symb=&Apache::lonnet::symbread(); }
-     $symb=&Apache::lonnet::escape($symb);
+     $symb=&escape($symb);
      if ($target) { $target="target=\"$target\""; }
-     return '<a href="/adm/parmset?&command=set&'.
+     return '<a href="/adm/parmset?command=set&amp;'.
- 	'symb='.$symb.'&uname='.$uname.
+ 	'symb='.$symb.'&amp;uname='.$uname.
- 	'&udom='.$udom.'" '.$target.'>'.$text.'</a>';
+ 	'&amp;udom='.$udom.'" '.$target.'>'.$text.'</a>';
  }
  ##############################################
- Line 2561  sub pprmlink {
+ Line 4822  sub pprmlink {
  sub timehash {
-     my @ltime=localtime(shift);
+     my ($thistime) = @_;
-     return ( 'seconds' => $ltime[0],
+     my $timezone = &Apache::lonlocal::gettimezone();
-              'minutes' => $ltime[1],
+     my $dt = DateTime->from_epoch(epoch => $thistime)
-              'hours'   => $ltime[2],
+                      ->set_time_zone($timezone);
-              'day'     => $ltime[3],
+     my $wday = $dt->day_of_week();
-              'month'   => $ltime[4]+1,
+     if ($wday == 7) { $wday = 0; }
-              'year'    => $ltime[5]+1900,
+     return ( 'second' => $dt->second(),
-              'weekday' => $ltime[6],
+              'minute' => $dt->minute(),
-              'dayyear' => $ltime[7]+1,
+              'hour'   => $dt->hour(),
-              'dlsav'   => $ltime[8] );
+              'day'     => $dt->day_of_month(),
+              'month'   => $dt->month(),
+              'year'    => $dt->year(),
+              'weekday' => $wday,
+              'dayyear' => $dt->day_of_year(),
+              'dlsav'   => $dt->is_dst() );
+ }
+ sub utc_string {
+     my ($date)=@_;
+     return strftime("%Y%m%dT%H%M%SZ",gmtime($date));
  }
  sub maketime {
      my %th=@_;
+     my ($epoch_time,$timezone,$dt);
+     $timezone = &Apache::lonlocal::gettimezone();
+     eval {
+         $dt = DateTime->new( year   => $th{'year'},
+                              month  => $th{'month'},
+                              day    => $th{'day'},
+                              hour   => $th{'hour'},
+                              minute => $th{'minute'},
+                              second => $th{'second'},
+                              time_zone => $timezone,
+                          );
+     };
+     if (!$@) {
+         $epoch_time = $dt->epoch;
+         if ($epoch_time) {
+             return $epoch_time;
+         }
+     }
      return POSIX::mktime(
          ($th{'seconds'},$th{'minutes'},$th{'hours'},
           $th{'day'},$th{'month'}-1,$th{'year'}-1900,0,0,-1));
- Line 2583  sub maketime {
+ Line 4872  sub maketime {
  #########################################
  sub findallcourses {
-     my %courses=();
+     my ($roles,$uname,$udom) = @_;
+     my %roles;
+     if (ref($roles)) { %roles = map { $_ => 1 } @{$roles}; }
+     my %courses;
      my $now=time;
-     foreach (keys %env) {
+     if (!defined($uname)) {
- 	if ($_=~/^user\.role\.\w+\.\/(\w+)\/(\w+)/) {
+         $uname = $env{'user.name'};
- 	    my ($starttime,$endtime)=$env{$_};
+     }
-             my $active=1;
+     if (!defined($udom)) {
-             if ($starttime) {
+         $udom = $env{'user.domain'};
- 		if ($now<$starttime) { $active=0; }
+     }
+     if (($uname ne $env{'user.name'}) || ($udom ne $env{'user.domain'})) {
+         my %roleshash = &Apache::lonnet::dump('roles',$udom,$uname);
+         if (!%roles) {
+             %roles = (
+                        cc => 1,
+                        co => 1,
+                        in => 1,
+                        ep => 1,
+                        ta => 1,
+                        cr => 1,
+                        st => 1,
+              );
+         }
+         foreach my $entry (keys(%roleshash)) {
+             my ($trole,$tend,$tstart) = split(/_/,$roleshash{$entry});
+             if ($trole =~ /^cr/) {
+                 next if (!exists($roles{$trole}) && !exists($roles{'cr'}));
+             } else {
+                 next if (!exists($roles{$trole}));
+             }
+             if ($tend) {
+                 next if ($tend < $now);
+             }
+             if ($tstart) {
+                 next if ($tstart > $now);
+             }
+             my ($cdom,$cnum,$sec,$cnumpart,$secpart,$role);
+             (undef,$cdom,$cnumpart,$secpart) = split(/\//,$entry);
+             my $value = $trole.'/'.$cdom.'/';
+             if ($secpart eq '') {
+                 ($cnum,$role) = split(/_/,$cnumpart);
+                 $sec = 'none';
+                 $value .= $cnum.'/';
+             } else {
+                 $cnum = $cnumpart;
+                 ($sec,$role) = split(/_/,$secpart);
+                 $value .= $cnum.'/'.$sec;
+             }
+             if (ref($courses{$cdom.'_'.$cnum}{$sec}) eq 'ARRAY') {
+                 unless (grep(/^\Q$value\E$/,@{$courses{$cdom.'_'.$cnum}{$sec}})) {
+                     push(@{$courses{$cdom.'_'.$cnum}{$sec}},$value);
+                 }
+             } else {
+                 @{$courses{$cdom.'_'.$cnum}{$sec}} = ($value);
              }
-             if ($endtime) {
+         }
-                 if ($now>$endtime) { $active=0; }
+     } else {
+         foreach my $key (keys(%env)) {
+ 	    if ( $key=~m{^user\.role\.(\w+)\./($match_domain)/($match_courseid)/?(\w*)$} ||
+                  $key=~m{^user\.role\.(cr/$match_domain/$match_username/\w+)\./($match_domain)/($match_courseid)/?(\w*)$}) {
+ 	        my ($role,$cdom,$cnum,$sec) = ($1,$2,$3,$4);
+ 	        next if ($role eq 'ca' || $role eq 'aa');
+ 	        next if (%roles && !exists($roles{$role}));
+ 	        my ($starttime,$endtime)=split(/\./,$env{$key});
+                 my $active=1;
+                 if ($starttime) {
+ 		    if ($now<$starttime) { $active=0; }
+                 }
+                 if ($endtime) {
+                     if ($now>$endtime) { $active=0; }
+                 }
+                 if ($active) {
+                     my $value = $role.'/'.$cdom.'/'.$cnum.'/';
+                     if ($sec eq '') {
+                         $sec = 'none';
+                     } else {
+                         $value .= $sec;
+                     }
+                     if (ref($courses{$cdom.'_'.$cnum}{$sec}) eq 'ARRAY') {
+                         unless (grep(/^\Q$value\E$/,@{$courses{$cdom.'_'.$cnum}{$sec}})) {
+                             push(@{$courses{$cdom.'_'.$cnum}{$sec}},$value);
+                         }
+                     } else {
+                         @{$courses{$cdom.'_'.$cnum}{$sec}} = ($value);
+                     }
+                 }
              }
-             if ($active) { $courses{$1.'_'.$2}=1; }
          }
      }
-     return keys %courses;
+     return %courses;
  }
  ###############################################
+ sub blockcheck {
+     my ($setters,$activity,$uname,$udom,$url,$is_course) = @_;
+     if (defined($udom) && defined($uname)) {
+         # If uname and udom are for a course, check for blocks in the course.
+         if (($is_course) || (&Apache::lonnet::is_course($udom,$uname))) {
+             my ($startblock,$endblock,$triggerblock) =
+                 &get_blocks($setters,$activity,$udom,$uname,$url);
+             return ($startblock,$endblock,$triggerblock);
+         }
+     } else {
+         $udom = $env{'user.domain'};
+         $uname = $env{'user.name'};
+     }
+     my $startblock = 0;
+     my $endblock = 0;
+     my $triggerblock = '';
+     my %live_courses = &findallcourses(undef,$uname,$udom);
+     # If uname is for a user, and activity is course-specific, i.e.,
+     # boards, chat or groups, check for blocking in current course only.
+     if (($activity eq 'boards' || $activity eq 'chat' ||
+          $activity eq 'groups' || $activity eq 'printout') &&
+         ($env{'request.course.id'})) {
+         foreach my $key (keys(%live_courses)) {
+             if ($key ne $env{'request.course.id'}) {
+                 delete($live_courses{$key});
+             }
+         }
+     }
+     my $otheruser = 0;
+     my %own_courses;
+     if ((($uname ne $env{'user.name'})) || ($udom ne $env{'user.domain'})) {
+         # Resource belongs to user other than current user.
+         $otheruser = 1;
+         # Gather courses for current user
+         %own_courses =
+             &findallcourses(undef,$env{'user.name'},$env{'user.domain'});
+     }
+     # Gather active course roles - course coordinator, instructor,
+     # exam proctor, ta, student, or custom role.
+     foreach my $course (keys(%live_courses)) {
+         my ($cdom,$cnum);
+         if ((defined($env{'course.'.$course.'.domain'})) && (defined($env{'course.'.$course.'.num'}))) {
+             $cdom = $env{'course.'.$course.'.domain'};
+             $cnum = $env{'course.'.$course.'.num'};
+         } else {
+             ($cdom,$cnum) = split(/_/,$course);
+         }
+         my $no_ownblock = 0;
+         my $no_userblock = 0;
+         if ($otheruser && $activity ne 'com') {
+             # Check if current user has 'evb' priv for this
+             if (defined($own_courses{$course})) {
+                 foreach my $sec (keys(%{$own_courses{$course}})) {
+                     my $checkrole = 'cm./'.$cdom.'/'.$cnum;
+                     if ($sec ne 'none') {
+                         $checkrole .= '/'.$sec;
+                     }
+                     if (&Apache::lonnet::allowed('evb',undef,undef,$checkrole)) {
+                         $no_ownblock = 1;
+                         last;
+                     }
+                 }
+             }
+             # if they have 'evb' priv and are currently not playing student
+             next if (($no_ownblock) &&
+                  ($env{'request.role'} !~ m{^st\./$cdom/$cnum}));
+         }
+         foreach my $sec (keys(%{$live_courses{$course}})) {
+             my $checkrole = 'cm./'.$cdom.'/'.$cnum;
+             if ($sec ne 'none') {
+                 $checkrole .= '/'.$sec;
+             }
+             if ($otheruser) {
+                 # Resource belongs to user other than current user.
+                 # Assemble privs for that user, and check for 'evb' priv.
+                 my (%allroles,%userroles);
+                 if (ref($live_courses{$course}{$sec}) eq 'ARRAY') {
+                     foreach my $entry (@{$live_courses{$course}{$sec}}) {
+                         my ($trole,$tdom,$tnum,$tsec);
+                         if ($entry =~ /^cr/) {
+                             ($trole,$tdom,$tnum,$tsec) =
+                                 ($entry =~ m|^(cr/$match_domain/$match_username/\w+)\./($match_domain)/($match_username)/?(\w*)$|);
+                         } else {
+                            ($trole,$tdom,$tnum,$tsec) = split(/\//,$entry);
+                         }
+                         my ($spec,$area,$trest);
+                         $area = '/'.$tdom.'/'.$tnum;
+                         $trest = $tnum;
+                         if ($tsec ne '') {
+                             $area .= '/'.$tsec;
+                             $trest .= '/'.$tsec;
+                         }
+                         $spec = $trole.'.'.$area;
+                         if ($trole =~ /^cr/) {
+                             &Apache::lonnet::custom_roleprivs(\%allroles,$trole,
+                                                               $tdom,$spec,$trest,$area);
+                         } else {
+                             &Apache::lonnet::standard_roleprivs(\%allroles,$trole,
+                                                                 $tdom,$spec,$trest,$area);
+                         }
+                     }
+                     my ($author,$adv) = &Apache::lonnet::set_userprivs(\%userroles,\%allroles);
+                     if ($userroles{'user.priv.'.$checkrole} =~ /evb\&([^\:]*)/) {
+                         if ($1) {
+                             $no_userblock = 1;
+                             last;
+                         }
+                     }
+                 }
+             } else {
+                 # Resource belongs to current user
+                 # Check for 'evb' priv via lonnet::allowed().
+                 if (&Apache::lonnet::allowed('evb',undef,undef,$checkrole)) {
+                     $no_ownblock = 1;
+                     last;
+                 }
+             }
+         }
+         # if they have the evb priv and are currently not playing student
+         next if (($no_ownblock) &&
+                  ($env{'request.role'} !~ m{^st\./\Q$cdom\E/\Q$cnum\E}));
+         next if ($no_userblock);
+         # Retrieve blocking times and identity of locker for course
+         # of specified user, unless user has 'evb' privilege.
+         my ($start,$end,$trigger) =
+             &get_blocks($setters,$activity,$cdom,$cnum,$url);
+         if (($start != 0) &&
+             (($startblock == 0) || ($startblock > $start))) {
+             $startblock = $start;
+             if ($trigger ne '') {
+                 $triggerblock = $trigger;
+             }
+         }
+         if (($end != 0)  &&
+             (($endblock == 0) || ($endblock < $end))) {
+             $endblock = $end;
+             if ($trigger ne '') {
+                 $triggerblock = $trigger;
+             }
+         }
+     }
+     return ($startblock,$endblock,$triggerblock);
+ }
+ sub get_blocks {
+     my ($setters,$activity,$cdom,$cnum,$url) = @_;
+     my $startblock = 0;
+     my $endblock = 0;
+     my $triggerblock = '';
+     my $course = $cdom.'_'.$cnum;
+     $setters->{$course} = {};
+     $setters->{$course}{'staff'} = [];
+     $setters->{$course}{'times'} = [];
+     $setters->{$course}{'triggers'} = [];
+     my (@blockers,%triggered);
+     my $now = time;
+     my %commblocks = &Apache::lonnet::get_comm_blocks($cdom,$cnum);
+     if ($activity eq 'docs') {
+         @blockers = &Apache::lonnet::has_comm_blocking('bre',undef,$url,\%commblocks);
+         foreach my $block (@blockers) {
+             if ($block =~ /^firstaccess____(.+)$/) {
+                 my $item = $1;
+                 my $type = 'map';
+                 my $timersymb = $item;
+                 if ($item eq 'course') {
+                     $type = 'course';
+                 } elsif ($item =~ /___\d+___/) {
+                     $type = 'resource';
+                 } else {
+                     $timersymb = &Apache::lonnet::symbread($item);
+                 }
+                 my $start = $env{'course.'.$cdom.'_'.$cnum.'.firstaccess.'.$timersymb};
+                 my $end = $start + $env{'course.'.$cdom.'_'.$cnum.'.timerinterval.'.$timersymb};
+                 $triggered{$block} = {
+                                        start => $start,
+                                        end   => $end,
+                                        type  => $type,
+                                      };
+             }
+         }
+     } else {
+         foreach my $block (keys(%commblocks)) {
+             if ($block =~ m/^(\d+)____(\d+)$/) {
+                 my ($start,$end) = ($1,$2);
+                 if ($start <= time && $end >= time) {
+                     if (ref($commblocks{$block}) eq 'HASH') {
+                         if (ref($commblocks{$block}{'blocks'}) eq 'HASH') {
+                             if ($commblocks{$block}{'blocks'}{$activity} eq 'on') {
+                                 unless(grep(/^\Q$block\E$/,@blockers)) {
+                                     push(@blockers,$block);
+                                 }
+                             }
+                         }
+                     }
+                 }
+             } elsif ($block =~ /^firstaccess____(.+)$/) {
+                 my $item = $1;
+                 my $timersymb = $item;
+                 my $type = 'map';
+                 if ($item eq 'course') {
+                     $type = 'course';
+                 } elsif ($item =~ /___\d+___/) {
+                     $type = 'resource';
+                 } else {
+                     $timersymb = &Apache::lonnet::symbread($item);
+                 }
+                 my $start = $env{'course.'.$cdom.'_'.$cnum.'.firstaccess.'.$timersymb};
+                 my $end = $start + $env{'course.'.$cdom.'_'.$cnum.'.timerinterval.'.$timersymb};
+                 if ($start && $end) {
+                     if (($start <= time) && ($end >= time)) {
+                         unless (grep(/^\Q$block\E$/,@blockers)) {
+                             push(@blockers,$block);
+                             $triggered{$block} = {
+                                                    start => $start,
+                                                    end   => $end,
+                                                    type  => $type,
+                                                  };
+                         }
+                     }
+                 }
+             }
+         }
+     }
+     foreach my $blocker (@blockers) {
+         my ($staff_name,$staff_dom,$title,$blocks) =
+             &parse_block_record($commblocks{$blocker});
+         push(@{$$setters{$course}{'staff'}},[$staff_name,$staff_dom]);
+         my ($start,$end,$triggertype);
+         if ($blocker =~ m/^(\d+)____(\d+)$/) {
+             ($start,$end) = ($1,$2);
+         } elsif (ref($triggered{$blocker}) eq 'HASH') {
+             $start = $triggered{$blocker}{'start'};
+             $end = $triggered{$blocker}{'end'};
+             $triggertype = $triggered{$blocker}{'type'};
+         }
+         if ($start) {
+             push(@{$$setters{$course}{'times'}}, [$start,$end]);
+             if ($triggertype) {
+                 push(@{$$setters{$course}{'triggers'}},$triggertype);
+             } else {
+                 push(@{$$setters{$course}{'triggers'}},0);
+             }
+             if ( ($startblock == 0) || ($startblock > $start) ) {
+                 $startblock = $start;
+                 if ($triggertype) {
+                     $triggerblock = $blocker;
+                 }
+             }
+             if ( ($endblock == 0) || ($endblock < $end) ) {
+                $endblock = $end;
+                if ($triggertype) {
+                    $triggerblock = $blocker;
+                }
+             }
+         }
+     }
+     return ($startblock,$endblock,$triggerblock);
+ }
+ sub parse_block_record {
+     my ($record) = @_;
+     my ($setuname,$setudom,$title,$blocks);
+     if (ref($record) eq 'HASH') {
+         ($setuname,$setudom) = split(/:/,$record->{'setter'});
+         $title = &unescape($record->{'event'});
+         $blocks = $record->{'blocks'};
+     } else {
+         my @data = split(/:/,$record,3);
+         if (scalar(@data) eq 2) {
+             $title = $data[1];
+             ($setuname,$setudom) = split(/@/,$data[0]);
+         } else {
+             ($setuname,$setudom,$title) = @data;
+         }
+         $blocks = { 'com' => 'on' };
+     }
+     return ($setuname,$setudom,$title,$blocks);
+ }
+ sub blocking_status {
+     my ($activity,$uname,$udom,$url,$is_course) = @_;
+     my %setters;
+ # check for active blocking
+     my ($startblock,$endblock,$triggerblock) =
+         &blockcheck(\%setters,$activity,$uname,$udom,$url,$is_course);
+     my $blocked = 0;
+     if ($startblock && $endblock) {
+         $blocked = 1;
+     }
+ # caller just wants to know whether a block is active
+     if (!wantarray) { return $blocked; }
+ # build a link to a popup window containing the details
+     my $querystring  = "?activity=$activity";
+ # $uname and $udom decide whose portfolio the user is trying to look at
+     if (($activity eq 'port') || ($activity eq 'passwd')) {
+         $querystring .= "&amp;udom=$udom"      if ($udom =~ /^$match_domain$/);
+         $querystring .= "&amp;uname=$uname"    if ($uname =~ /^$match_username$/);
+     } elsif ($activity eq 'docs') {
+         $querystring .= '&amp;url='.&HTML::Entities::encode($url,'&"');
+     }
+     my $output .= <<'END_MYBLOCK';
+ function openWindow(url, wdwName, w, h, toolbar,scrollbar) {
+     var options = "width=" + w + ",height=" + h + ",";
+     options += "resizable=yes,scrollbars="+scrollbar+",status=no,";
+     options += "menubar=no,toolbar="+toolbar+",location=no,directories=no";
+     var newWin = window.open(url, wdwName, options);
+     newWin.focus();
+ }
+ END_MYBLOCK
+     $output = Apache::lonhtmlcommon::scripttag($output);
+     my $popupUrl = "/adm/blockingstatus/$querystring";
+     my $text = &mt('Communication Blocked');
+     my $class = 'LC_comblock';
+     if ($activity eq 'docs') {
+         $text = &mt('Content Access Blocked');
+         $class = '';
+     } elsif ($activity eq 'printout') {
+         $text = &mt('Printing Blocked');
+     } elsif ($activity eq 'passwd') {
+         $text = &mt('Password Changing Blocked');
+     }
+     $output .= <<"END_BLOCK";
+ <div class='$class'>
+   <a onclick='openWindow("$popupUrl","Blocking Table",600,300,"no","no");return false;' href='/adm/blockingstatus/$querystring'
+   title='$text'>
+   <img class='LC_noBorder LC_middle' title='$text' src='/res/adm/pages/comblock.png' alt='$text'/></a>
+   <a onclick='openWindow("$popupUrl","Blocking Table",600,300,"no","no");return false;' href='/adm/blockingstatus/$querystring'
+   title='$text'>$text</a>
+ </div>
+ END_BLOCK
+     return ($blocked, $output);
+ }
+ ###############################################
+ sub check_ip_acc {
+     my ($acc,$clientip)=@_;
+     &Apache::lonxml::debug("acc is $acc");
+     if (!defined($acc) || $acc =~ /^\s*$/ || $acc =~/^\s*no\s*$/i) {
+         return 1;
+     }
+     my $allowed;
+     my $ip=$ENV{'REMOTE_ADDR'} || $clientip || $env{'request.host'};
+     my $name;
+     my %access = (
+                      allowfrom => 1,
+                      denyfrom  => 0,
+                  );
+     my @allows;
+     my @denies;
+     foreach my $item (split(',',$acc)) {
+         $item =~ s/^\s*//;
+         $item =~ s/\s*$//;
+         my $pattern;
+         if ($item =~ /^\!(.+)$/) {
+             push(@denies,$1);
+         } else {
+             push(@allows,$item);
+         }
+    }
+    my $numdenies = scalar(@denies);
+    my $numallows = scalar(@allows);
+    my $count = 0;
+    foreach my $pattern (@denies,@allows) {
+         $count ++;
+         my $acctype = 'allowfrom';
+         if ($count <= $numdenies) {
+             $acctype = 'denyfrom';
+         }
+         if ($pattern =~ /\*$/) {
+             #35.8.*
+             $pattern=~s/\*//;
+             if ($ip =~ /^\Q$pattern\E/) { $allowed=$access{$acctype}; }
+         } elsif ($pattern =~ /(\d+\.\d+\.\d+)\.\[(\d+)-(\d+)\]$/) {
+             #35.8.3.[34-56]
+             my $low=$2;
+             my $high=$3;
+             $pattern=$1;
+             if ($ip =~ /^\Q$pattern\E/) {
+                 my $last=(split(/\./,$ip))[3];
+                 if ($last <=$high && $last >=$low) { $allowed=$access{$acctype}; }
+             }
+         } elsif ($pattern =~ /^\*/) {
+             #*.msu.edu
+             $pattern=~s/\*//;
+             if (!defined($name)) {
+                 use Socket;
+                 my $netaddr=inet_aton($ip);
+                 ($name)=gethostbyaddr($netaddr,AF_INET);
+             }
+             if ($name =~ /\Q$pattern\E$/i) { $allowed=$access{$acctype}; }
+         } elsif ($pattern =~ /\d+\.\d+\.\d+\.\d+/) {
+             #127.0.0.1
+             if ($ip =~ /^\Q$pattern\E/) { $allowed=$access{$acctype}; }
+         } else {
+             #some.name.com
+             if (!defined($name)) {
+                 use Socket;
+                 my $netaddr=inet_aton($ip);
+                 ($name)=gethostbyaddr($netaddr,AF_INET);
+             }
+             if ($name =~ /\Q$pattern\E$/i) { $allowed=$access{$acctype}; }
+         }
+         if ($allowed =~ /^(0|1)$/) { last; }
+     }
+     if ($allowed eq '') {
+         if ($numdenies && !$numallows) {
+             $allowed = 1;
+         } else {
+             $allowed = 0;
+         }
+     }
+     return $allowed;
+ }
  ###############################################
  =pod
- Line 2621  Returns: Determines which domain should
+ Line 5419  Returns: Determines which domain should
  ###############################################
  sub determinedomain {
      my $domain=shift;
-    if (! $domain) {
+     if (! $domain) {
          # Determine domain if we have not been given one
-         $domain = $Apache::lonnet::perlvar{'lonDefDomain'};
+         $domain = &Apache::lonnet::default_login_domain();
          if ($env{'user.domain'}) { $domain=$env{'user.domain'}; }
          if ($env{'request.role.domain'}) {
              $domain=$env{'request.role.domain'};
- Line 2632  sub determinedomain {
+ Line 5430  sub determinedomain {
      return $domain;
  }
  ###############################################
+ sub devalidate_domconfig_cache {
+     my ($udom)=@_;
+     &Apache::lonnet::devalidate_cache_new('domainconfig',$udom);
+ }
+ # ---------------------- Get domain configuration for a domain
+ sub get_domainconf {
+     my ($udom) = @_;
+     my $cachetime=1800;
+     my ($result,$cached)=&Apache::lonnet::is_cached_new('domainconfig',$udom);
+     if (defined($cached)) { return %{$result}; }
+     my %domconfig = &Apache::lonnet::get_dom('configuration',
+ 					     ['login','rolecolors','autoenroll'],$udom);
+     my (%designhash,%legacy);
+     if (keys(%domconfig) > 0) {
+         if (ref($domconfig{'login'}) eq 'HASH') {
+             if (keys(%{$domconfig{'login'}})) {
+                 foreach my $key (keys(%{$domconfig{'login'}})) {
+                     if (ref($domconfig{'login'}{$key}) eq 'HASH') {
+                         if (($key eq 'loginvia') || ($key eq 'headtag')) {
+                             if (ref($domconfig{'login'}{$key}) eq 'HASH') {
+                                 foreach my $hostname (keys(%{$domconfig{'login'}{$key}})) {
+                                     if (ref($domconfig{'login'}{$key}{$hostname}) eq 'HASH') {
+                                         if ($key eq 'loginvia') {
+                                             if ($domconfig{'login'}{'loginvia'}{$hostname}{'server'}) {
+                                                 my $server = $domconfig{'login'}{'loginvia'}{$hostname}{'server'};
+                                                 $designhash{$udom.'.login.loginvia'} = $server;
+                                                 if ($domconfig{'login'}{'loginvia'}{$hostname}{'serverpath'} eq 'custom') {
+                                                     $designhash{$udom.'.login.loginvia_'.$hostname} = $server.':'.$domconfig{'login'}{'loginvia'}{$hostname}{'custompath'};
+                                                 } else {
+                                                     $designhash{$udom.'.login.loginvia_'.$hostname} = $server.':'.$domconfig{'login'}{'loginvia'}{$hostname}{'serverpath'};
+                                                 }
+                                             }
+                                         } elsif ($key eq 'headtag') {
+                                             if ($domconfig{'login'}{'headtag'}{$hostname}{'url'}) {
+                                                 $designhash{$udom.'.login.headtag_'.$hostname} = $domconfig{'login'}{'headtag'}{$hostname}{'url'};
+                                             }
+                                         }
+                                         if ($domconfig{'login'}{$key}{$hostname}{'exempt'}) {
+                                             $designhash{$udom.'.login.'.$key.'_exempt_'.$hostname} = $domconfig{'login'}{$key}{$hostname}{'exempt'};
+                                         }
+                                     }
+                                 }
+                             }
+                         } else {
+                             foreach my $img (keys(%{$domconfig{'login'}{$key}})) {
+                                 $designhash{$udom.'.login.'.$key.'_'.$img} =
+                                     $domconfig{'login'}{$key}{$img};
+                             }
+                         }
+                     } else {
+                         $designhash{$udom.'.login.'.$key}=$domconfig{'login'}{$key};
+                     }
+                 }
+             } else {
+                 $legacy{'login'} = 1;
+             }
+         } else {
+             $legacy{'login'} = 1;
+         }
+         if (ref($domconfig{'rolecolors'}) eq 'HASH') {
+             if (keys(%{$domconfig{'rolecolors'}})) {
+                 foreach my $role (keys(%{$domconfig{'rolecolors'}})) {
+                     if (ref($domconfig{'rolecolors'}{$role}) eq 'HASH') {
+                         foreach my $item (keys(%{$domconfig{'rolecolors'}{$role}})) {
+                             $designhash{$udom.'.'.$role.'.'.$item}=$domconfig{'rolecolors'}{$role}{$item};
+                         }
+                     }
+                 }
+             } else {
+                 $legacy{'rolecolors'} = 1;
+             }
+         } else {
+             $legacy{'rolecolors'} = 1;
+         }
+         if (ref($domconfig{'autoenroll'}) eq 'HASH') {
+             if ($domconfig{'autoenroll'}{'co-owners'}) {
+                 $designhash{$udom.'.autoassign.co-owners'}=$domconfig{'autoenroll'}{'co-owners'};
+             }
+         }
+         if (keys(%legacy) > 0) {
+             my %legacyhash = &get_legacy_domconf($udom);
+             foreach my $item (keys(%legacyhash)) {
+                 if ($item =~ /^\Q$udom\E\.login/) {
+                     if ($legacy{'login'}) {
+                         $designhash{$item} = $legacyhash{$item};
+                     }
+                 } else {
+                     if ($legacy{'rolecolors'}) {
+                         $designhash{$item} = $legacyhash{$item};
+                     }
+                 }
+             }
+         }
+     } else {
+         %designhash = &get_legacy_domconf($udom);
+     }
+     &Apache::lonnet::do_cache_new('domainconfig',$udom,\%designhash,
+ 				  $cachetime);
+     return %designhash;
+ }
+ sub get_legacy_domconf {
+     my ($udom) = @_;
+     my %legacyhash;
+     my $designdir=$Apache::lonnet::perlvar{'lonTabDir'}.'/lonDomColors';
+     my $designfile =  $designdir.'/'.$udom.'.tab';
+     if (-e $designfile) {
+         if ( open (my $fh,"<$designfile") ) {
+             while (my $line = <$fh>) {
+                 next if ($line =~ /^\#/);
+                 chomp($line);
+                 my ($key,$val)=(split(/\=/,$line));
+                 if ($val) { $legacyhash{$udom.'.'.$key}=$val; }
+             }
+             close($fh);
+         }
+     }
+     if (-e $Apache::lonnet::perlvar{'lonDocRoot'}.'/adm/lonDomLogos/'.$udom.'.gif') {
+         $legacyhash{$udom.'.login.domlogo'} = "/adm/lonDomLogos/$udom.gif";
+     }
+     return %legacyhash;
+ }
  =pod
  =item * &domainlogo()
- Line 2645  If the domain logo does not exist, a des
+ Line 5570  If the domain logo does not exist, a des
  ###############################################
  sub domainlogo {
      my $domain = &determinedomain(shift);
-      # See if there is a logo
+     my %designhash = &get_domainconf($domain);
-     if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
+     # See if there is a logo
- 	my $logo=&lonhttpdurl("/adm/lonDomLogos/$domain.gif");
+     if ($designhash{$domain.'.login.domlogo'} ne '') {
-         return '<img src="'.$logo.'" alt="'.$domain.'" />';
+         my $imgsrc = $designhash{$domain.'.login.domlogo'};
-     } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
+         if ($imgsrc =~ m{^/(adm|res)/}) {
-         return $Apache::lonnet::domaindescription{$domain};
+ 	    if ($imgsrc =~ m{^/res/}) {
+ 		my $local_name = &Apache::lonnet::filelocation('',$imgsrc);
+ 		&Apache::lonnet::repcopy($local_name);
+ 	    }
+ 	   $imgsrc = &lonhttpdurl($imgsrc);
+         }
+         return '<img src="'.$imgsrc.'" alt="'.$domain.'" />';
+     } elsif (defined(&Apache::lonnet::domain($domain,'description'))) {
+         return &Apache::lonnet::domain($domain,'description');
      } else {
          return '';
      }
- Line 2668  Returns: value of designparamter $which
+ Line 5601  Returns: value of designparamter $which
  =cut
  ##############################################
  sub designparm {
      my ($which,$domain)=@_;
-     if ($env{'browser.blackwhite'} eq 'on') {
+     if (exists($env{'environment.color.'.$which})) {
- 	if ($which=~/\.(font|alink|vlink|link)$/) {
+         return $env{'environment.color.'.$which};
- 	    return '#000000';
- 	}
- 	if ($which=~/\.(pgbg|sidebg)$/) {
- 	    return '#FFFFFF';
- 	}
- 	if ($which=~/\.tabbg$/) {
- 	    return '#CCCCCC';
- 	}
-     }
-     if ($env{'environment.color.'.$which}) {
- 	return $env{'environment.color.'.$which};
      }
      $domain=&determinedomain($domain);
-     if ($designhash{$domain.'.'.$which}) {
+     my %domdesign;
- 	return $designhash{$domain.'.'.$which};
+     unless ($domain eq 'public') {
+         %domdesign = &get_domainconf($domain);
+     }
+     my $output;
+     if ($domdesign{$domain.'.'.$which} ne '') {
+         $output = $domdesign{$domain.'.'.$which};
      } else {
-         return $designhash{'default.'.$which};
+         $output = $defaultdesign{$which};
+     }
+     if (($which =~ /^(student|coordinator|author|admin)\.img$/) ||
+         ($which =~ /login\.(img|logo|domlogo|login)/)) {
+         if ($output =~ m{^/(adm|res)/}) {
+             if ($output =~ m{^/res/}) {
+                 my $local_name = &Apache::lonnet::filelocation('',$output);
+                 &Apache::lonnet::repcopy($local_name);
+             }
+             $output = &lonhttpdurl($output);
+         }
      }
+     return $output;
+ }
+ ##############################################
+ =pod
+ =item * &authorspace()
+ Inputs: $url (usually will be undef).
+ Returns: Path to Authoring Space containing the resource or
+          directory being viewed (or for which action is being taken).
+          If $url is provided, and begins /priv/<domain>/<uname>
+          the path will be that portion of the $context argument.
+          Otherwise the path will be for the author space of the current
+          user when the current role is author, or for that of the
+          co-author/assistant co-author space when the current role
+          is co-author or assistant co-author.
+ =cut
+ sub authorspace {
+     my ($url) = @_;
+     if ($url ne '') {
+         if ($url =~ m{^(/priv/$match_domain/$match_username/)}) {
+            return $1;
+         }
+     }
+     my $caname = '';
+     my $cadom = '';
+     if ($env{'request.role'} =~ /^(?:ca|aa)/) {
+         ($cadom,$caname) =
+             ($env{'request.role'}=~/($match_domain)\/($match_username)$/);
+     } elsif ($env{'request.role'} =~ m{^au\./($match_domain)/}) {
+         $caname = $env{'user.name'};
+         $cadom = $env{'user.domain'};
+     }
+     if (($caname ne '') && ($cadom ne '')) {
+         return "/priv/$cadom/$caname/";
+     }
+     return;
+ }
+ ##############################################
+ =pod
+ =item * &head_subbox()
+ Inputs: $content (contains HTML code with page functions, etc.)
+ Returns: HTML div with $content
+          To be included in page header
+ =cut
+ sub head_subbox {
+     my ($content)=@_;
+     my $output =
+         '<div class="LC_head_subbox">'
+        .$content
+        .'</div>'
+ }
+ ##############################################
+ =pod
+ =item * &CSTR_pageheader()
+ Input: (optional) filename from which breadcrumb trail is built.
+        In most cases no input as needed, as $env{'request.filename'}
+        is appropriate for use in building the breadcrumb trail.
+ Returns: HTML div with CSTR path and recent box
+          To be included on Authoring Space pages
+ =cut
+ sub CSTR_pageheader {
+     my ($trailfile) = @_;
+     if ($trailfile eq '') {
+         $trailfile = $env{'request.filename'};
+     }
+ # this is for resources; directories have customtitle, and crumbs
+ # and select recent are created in lonpubdir.pm
+     my $londocroot = $Apache::lonnet::perlvar{'lonDocRoot'};
+     my ($udom,$uname,$thisdisfn)=
+         ($trailfile =~ m{^\Q$londocroot\E/priv/([^/]+)/([^/]+)(?:|/(.*))$});
+     my $formaction = "/priv/$udom/$uname/$thisdisfn";
+     $formaction =~ s{/+}{/}g;
+     my $parentpath = '';
+     my $lastitem = '';
+     if ($thisdisfn =~ m-(.+/)([^/]*)$-) {
+         $parentpath = $1;
+         $lastitem = $2;
+     } else {
+         $lastitem = $thisdisfn;
+     }
+     my ($crsauthor,$title);
+     if (($env{'request.course.id'}) &&
+         ($env{'course.'.$env{'request.course.id'}.'.num'} eq $uname) &&
+         ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $udom)) {
+         $crsauthor = 1;
+         $title = &mt('Course Authoring Space');
+     } else {
+         $title = &mt('Authoring Space');
+     }
+     my $output =
+          '<div>'
+         .&Apache::loncommon::help_open_menu('','',3,'Authoring') #FIXME: Broken? Where is it?
+         .'<b>'.$title.'</b> '
+         .'<form name="dirs" method="post" action="'.$formaction
+         .'" target="_top">' #FIXME lonpubdir: target="_parent"
+         .&Apache::lonhtmlcommon::crumbs($uname.'/'.$parentpath,'_top','/priv/'.$udom,undef,undef);
+     if ($lastitem) {
+         $output .=
+              '<span class="LC_filename">'
+             .$lastitem
+             .'</span>';
+     }
+     if ($crsauthor) {
+         $output .= '</form>'.&Apache::lonmenu::constspaceform();
+     } else {
+         $output .=
+              '<br />'
+             #FIXME lonpubdir: &Apache::lonhtmlcommon::crumbs($uname.$thisdisfn.'/','_top','/priv','','+1',1)."</b></tt><br />"
+             .&Apache::lonhtmlcommon::select_recent('construct','recent','this.form.action=this.form.recent.value;this.form.submit()')
+             .'</form>'
+             .&Apache::lonmenu::constspaceform();
+     }
+     $output .= '</div>';
+     return $output;
  }
  ###############################################
- Line 2700  sub designparm {
+ Line 5777  sub designparm {
  =back
- =head1 HTTP Helpers
+ =head1 HTML Helpers
  =over 4
- Line 2725  Inputs:
+ Line 5802  Inputs:
  =item * $forcereg, if page should register as content page (relevant for
              text interface only)
+ =item * $no_nav_bar, if true, keep the 'what is this' info but remove the
+                      navigational links
+ =item * $bgcolor, used to override the bgcolor on a webpage to a specific value
+ =item * $args, optional argument valid values are
+             no_auto_mt_title -> prevents &mt()ing the title arg
+ =item * $advtoolsref, optional argument, ref to an array containing
+             inlineremote items to be added in "Functions" menu below
+             breadcrumbs.
  =back
  Returns: A uniform header for LON-CAPA web pages.
- Line 2735  other decorations will be returned.
+ Line 5824  other decorations will be returned.
  =cut
  sub bodytag {
-     my ($title,$function,$addentries,$bodyonly,$domain,$forcereg,$customtitle,$notopbar)=@_;
+     my ($title,$function,$addentries,$bodyonly,$domain,$forcereg,
-     $title=&mt($title);
+         $no_nav_bar,$bgcolor,$args,$advtoolsref)=@_;
-     $function = &get_users_function() if (!$function);
-     my $img=&designparm($function.'.img',$domain);
+     my $public;
-     my $pgbg=&designparm($function.'.pgbg',$domain);
+     if ((($env{'user.name'} eq 'public') && ($env{'user.domain'} eq 'public'))
-     my $tabbg=&designparm($function.'.tabbg',$domain);
+         || ($env{'user.name'} eq '') && ($env{'user.domain'} eq '')) {
-     my $font=&designparm($function.'.font',$domain);
+         $public = 1;
-     my $link=&designparm($function.'.link',$domain);
-     my $alink=&designparm($function.'.alink',$domain);
-     my $vlink=&designparm($function.'.vlink',$domain);
-     my $sidebg=&designparm($function.'.sidebg',$domain);
- # Accessibility font enhance
-     unless ($addentries) { $addentries=''; }
-     my $addstyle='';
-     if ($env{'browser.fontenhance'} eq 'on') {
- 	$addstyle=' font-size: x-large;';
      }
+     if (!$args->{'no_auto_mt_title'}) { $title = &mt($title); }
+     my $httphost = $args->{'use_absolute'};
+     $function = &get_users_function() if (!$function);
+     my $img =    &designparm($function.'.img',$domain);
+     my $font =   &designparm($function.'.font',$domain);
+     my $pgbg   = $bgcolor || &designparm($function.'.pgbg',$domain);
+     my %design = ( 'style'   => 'margin-top: 0',
+ 		   'bgcolor' => $pgbg,
+ 		   'text'    => $font,
+                    'alink'   => &designparm($function.'.alink',$domain),
+ 		   'vlink'   => &designparm($function.'.vlink',$domain),
+ 		   'link'    => &designparm($function.'.link',$domain),);
+     @design{keys(%$addentries)} = @$addentries{keys(%$addentries)};
   # role and realm
-     my ($role,$realm)
+     my ($role,$realm) = split(m{\./},$env{'request.role'},2);
-        =&Apache::lonnet::plaintext((split(/\./,$env{'request.role'}))[0]);
+     if ($realm) {
+         $realm = '/'.$realm;
+     }
+     if ($role  eq 'ca') {
+         my ($rdom,$rname) = ($realm =~ m{^/($match_domain)/($match_username)$});
+         $realm = &plainname($rname,$rdom);
+     }
  # realm
      if ($env{'request.course.id'}) {
- 	$realm=
+         if ($env{'request.role'} !~ /^cr/) {
-          $env{'course.'.$env{'request.course.id'}.'.description'};
+             $role = &Apache::lonnet::plaintext($role,&course_type());
+         } elsif ($role =~ m{^cr/($match_domain)/\1-domainconfig/(\w+)$}) {
+             $role = &mt('Helpdesk[_1]','&nbsp;'.$2);
+         } else {
+             $role = (split(/\//,$role,4))[-1];
+         }
+         if ($env{'request.course.sec'}) {
+             $role .= ('&nbsp;'x2).'-&nbsp;'.&mt('section:').'&nbsp;'.$env{'request.course.sec'};
+         }
+ 	$realm = $env{'course.'.$env{'request.course.id'}.'.description'};
+     } else {
+         $role = &Apache::lonnet::plaintext($role);
      }
-     unless ($realm) { $realm='&nbsp;'; }
- # Set messages
+     if (!$realm) { $realm='&nbsp;'; }
-     my $messages=&domainlogo($domain);
- # Port for miniserver
+     my $extra_body_attr = &make_attr_string($forcereg,\%design);
-     my $lonhttpdPort=$Apache::lonnet::perlvar{'lonhttpdPort'};
-     if (!defined($lonhttpdPort)) { $lonhttpdPort='8080'; }
  # construct main body tag
-     my $bodytag = <<END;
+     my $bodytag = "<body $extra_body_attr>".
- <style type="text/css">
+ 	&Apache::lontexconvert::init_math_support();
- h1, h2, h3, th { font-family: Arial, Helvetica, sans-serif }
- a:focus { color: red; background: yellow }
- </style>
- <body bgcolor="$pgbg" text="$font" alink="$alink" vlink="$vlink" link="$link"
- style="margin-top: 0px;$addstyle" $addentries>
- END
-     &Apache::lontexconvert::jsMath_reset();
-     if ($env{'environment.texengine'} eq 'jsMath') {
- 	$bodytag.=&Apache::lontexconvert::jsMath_header();
-     }
-     my $upperleft='<img src="http://'.$ENV{'HTTP_HOST'}.':'.
+     &get_unprocessed_cgi($ENV{'QUERY_STRING'}, ['inhibitmenu']);
-                    $lonhttpdPort.$img.'" alt="'.$function.'" />';
-     if ($bodyonly) {
+     if (($bodyonly) || ($no_nav_bar) || ($env{'form.inhibitmenu'} eq 'yes')) {
-         return $bodytag;
-     } elsif ($env{'browser.interface'} eq 'textual') {
- # Accessibility
-         return $bodytag.&Apache::lonmenu::menubuttons($forcereg,'web',
-                                                       $forcereg).
-                '<h1>LON-CAPA: '.$title.'</h1>';
-     } elsif ($env{'environment.remote'} eq 'off') {
- # No Remote
- 	my $roleinfo=(<<ENDROLE);
- <td bgcolor="$tabbg" align="right">
- <font size="2" face="Arial, Helvetica, sans-serif">
-     $env{'environment.firstname'}
-     $env{'environment.middlename'}
-     $env{'environment.lastname'}
-     $env{'environment.generation'}
-     </font>&nbsp;
- <br />
- <font size="2" face="Arial, Helvetica, sans-serif">$role</font>&nbsp;
- <br />
- <font size="2" face="Arial, Helvetica, sans-serif">$realm</font>&nbsp;
- </td>
- ENDROLE
-         my $titleinfo = '<font face="Arial, Helvetica, sans-serif" size="+3" color="'.
- 		$font.'"><b>'.$title.'</b></font>';
-         if ($customtitle) {
-             $titleinfo = $customtitle;
-         }
- 	if ($env{'request.state'} eq 'construct') {
- 	    my ($uname,$thisdisfn)=
- 		($env{'request.filename'} =~ m|^/home/([^/]+)/public_html/(.*)|);
- 	    my $formaction='/priv/'.$uname.'/'.$thisdisfn;
- 	    $formaction=~s/\/+/\//g;
-             unless ($customtitle) {  #this is for resources; directories have customtitle, and crumbs and select recent are created in lonpubdir.pm
-                 my $parentpath = '';
-                 my $lastitem = '';
-                 if ($thisdisfn =~ m-(.+/)([^/]*)$-) {
-                     $parentpath = $1;
-                     $lastitem = $2;
-                 } else {
-                     $lastitem = $thisdisfn;
-                 }
- 	        $titleinfo = &Apache::loncommon::help_open_menu('','','','',3,'Authoring').
-                       '<font face="Arial, Helvetica, sans-serif"><b>Construction Space</b>:</font>&nbsp;'.
-                       '<form name="dirs" method="post" action="'.$formaction
- 		    .'" target="_top"><tt><b>'
- 		    .&Apache::lonhtmlcommon::crumbs($uname.'/'.$parentpath,'_top','/priv','','+1',1)."<font size=\"+1\">$lastitem</font></b></tt><br />"
- 		    .&Apache::lonhtmlcommon::select_recent('construct','recent','this.form.action=this.form.recent.value;this.form.submit()')
- 		    .'</form>'
- 		    .&Apache::lonmenu::constspaceform();
-             }
- 	    $forcereg=1;
-         }
-         my $titletable = '<table bgcolor="'.$pgbg.'" width="100%" border="0" '.
-                          'cellspacing="3" cellpadding="3">'.
-                          '<tr><td bgcolor="'.$tabbg.'">'.
-                          $titleinfo.'</td>'.$roleinfo.'</tr></table>';
-         if ($env{'request.state'} eq 'construct') {
-             if ($notopbar) {
-                 $bodytag .= $titletable;
-             } else {
-                 $bodytag .= &Apache::lonmenu::menubuttons($forcereg,'web',$forcereg,$titletable);
-             }
- 	} else {
-             if ($notopbar) {
-                 $bodytag .= $titletable;
-             } else {
-                 $bodytag .= &Apache::lonmenu::menubuttons($forcereg,'web',$forcereg).
-                         $titletable;
-             }
-         }
          return $bodytag;
      }
- #
+     if ($public) {
- # Top frame rendering, Remote is up
+ 	undef($role);
- #
-     my $titleinfo = '&nbsp;<font size="5" face="Arial, Helvetica, sans-serif"><b>'.$title.'</b></font>';
-     if ($customtitle) {
-         $titleinfo = $customtitle;
      }
+     my $titleinfo = '<h1>'.$title.'</h1>';
      #
      # Extra info if you are the DC
      my $dc_info = '';
- Line 2873  ENDROLE
+ Line 5900  ENDROLE
                          $env{'course.'.$env{'request.course.id'}.
                                   '.domain'}.'/'})) {
          my $cid = $env{'request.course.id'};
-         $dc_info.= $cid.' '.$env{'course.'.$cid.'.internal.coursecode'};
+         $dc_info = $cid.' '.$env{'course.'.$cid.'.internal.coursecode'};
-         $dc_info = '('.$dc_info.')';
+         $dc_info =~ s/\s+$//;
      }
-     #
-     return(<<ENDBODY);
+     my $crstype;
- $bodytag
+     if ($env{'request.course.id'}) {
- <table width="100%" cellspacing="0" border="0" cellpadding="0">
+         $crstype = $env{'course.'.$env{'request.course.id'}.'.type'};
- <tr><td bgcolor="$sidebg">
+     } elsif ($args->{'crstype'}) {
- $upperleft</td>
+         $crstype = $args->{'crstype'};
- <td bgcolor="$sidebg" align="right">$messages&nbsp;</td>
+     }
- </tr>
+     if (($crstype eq 'Placement') && (!$env{'request.role.adv'})) {
- <tr>
+         undef($role);
- <td rowspan="3" bgcolor="$tabbg">
+     } else {
- $titleinfo $dc_info
+         $role = '<span class="LC_nobreak">('.$role.')</span>' if ($role && !$env{'browser.mobile'});
- </td><td bgcolor="$tabbg" align="right">
+     }
- <font size="2" face="Arial, Helvetica, sans-serif">
-     $env{'environment.firstname'}
+         if ($env{'request.state'} eq 'construct') { $forcereg=1; }
-     $env{'environment.middlename'}
-     $env{'environment.lastname'}
+         #    if ($env{'request.state'} eq 'construct') {
-     $env{'environment.generation'}
+         #        $titleinfo = &CSTR_pageheader(); #FIXME: Will be removed once all scripts have their own calls
-     </font>&nbsp;
+         #    }
- </td>
- </tr>
+         $bodytag .= Apache::lonhtmlcommon::scripttag(
- <tr><td bgcolor="$tabbg" align="right">
+             Apache::lonmenu::utilityfunctions($httphost), 'start');
- <font size="2" face="Arial, Helvetica, sans-serif">$role</font>&nbsp;
- </td></tr>
+         my ($left,$right) = Apache::lonmenu::primary_menu($crstype);
- <tr>
- <td bgcolor="$tabbg" align="right"><font size="2" face="Arial, Helvetica, sans-serif">$realm</font>&nbsp;</td></tr>
+         if ($env{'request.noversionuri'} =~ m{^/res/adm/pages/}) {
- </table><br />
+              if ($dc_info) {
- ENDBODY
+                  $dc_info = qq|<span class="LC_cusr_subheading">$dc_info</span>|;
+              }
+              $bodytag .= qq|<div id="LC_nav_bar">$left $role<br />
+                 <em>$realm</em> $dc_info</div>|;
+             return $bodytag;
+         }
+         unless ($env{'request.symb'} =~ m/\.page___\d+___/) {
+             $bodytag .= qq|<div id="LC_nav_bar">$left $role</div>|;
+         }
+         $bodytag .= $right;
+         if ($dc_info) {
+             $dc_info = &dc_courseid_toggle($dc_info);
+         }
+         $bodytag .= qq|<div id="LC_realm">$realm $dc_info</div>|;
+         #if directed to not display the secondary menu, don't.
+         if ($args->{'no_secondary_menu'}) {
+             return $bodytag;
+         }
+         #don't show menus for public users
+         if (!$public){
+             $bodytag .= Apache::lonmenu::secondary_menu($httphost);
+             $bodytag .= Apache::lonmenu::serverform();
+             $bodytag .= Apache::lonhtmlcommon::scripttag('', 'end');
+             if ($env{'request.state'} eq 'construct') {
+                 $bodytag .= &Apache::lonmenu::innerregister($forcereg,
+                                 $args->{'bread_crumbs'});
+             } elsif ($forcereg) {
+                 $bodytag .= &Apache::lonmenu::innerregister($forcereg,undef,
+                                                             $args->{'group'},
+                                                             $args->{'hide_buttons'});
+             } else {
+                 $bodytag .=
+                     &Apache::lonmenu::prepare_functions($env{'request.noversionuri'},
+                                                         $forcereg,$args->{'group'},
+                                                         $args->{'bread_crumbs'},
+                                                         $advtoolsref);
+             }
+         }else{
+             # this is to seperate menu from content when there's no secondary
+             # menu. Especially needed for public accessible ressources.
+             $bodytag .= '<hr style="clear:both" />';
+             $bodytag .= Apache::lonhtmlcommon::scripttag('', 'end');
+         }
+         return $bodytag;
+ }
+ sub dc_courseid_toggle {
+     my ($dc_info) = @_;
+     return ' <span id="dccidtext" class="LC_cusr_subheading LC_nobreak">'.
+            '<a href="javascript:showCourseID();" class="LC_menubuttons_link">'.
+            &mt('(More ...)').'</a></span>'.
+            '<div id="dccid" class="LC_dccid">'.$dc_info.'</div>';
+ }
+ sub make_attr_string {
+     my ($register,$attr_ref) = @_;
+     if ($attr_ref && !ref($attr_ref)) {
+ 	die("addentries Must be a hash ref ".
+ 	    join(':',caller(1))." ".
+ 	    join(':',caller(0))." ");
+     }
+     if ($register) {
+ 	my ($on_load,$on_unload);
+ 	foreach my $key (keys(%{$attr_ref})) {
+ 	    if      (lc($key) eq 'onload') {
+ 		$on_load.=$attr_ref->{$key}.';';
+ 		delete($attr_ref->{$key});
+ 	    } elsif (lc($key) eq 'onunload') {
+ 		$on_unload.=$attr_ref->{$key}.';';
+ 		delete($attr_ref->{$key});
+ 	    }
+ 	}
+ 	$attr_ref->{'onload'}  = $on_load;
+ 	$attr_ref->{'onunload'}= $on_unload;
+     }
+     my $attr_string;
+     foreach my $attr (sort(keys(%$attr_ref))) {
+ 	$attr_string .= " $attr=\"".$attr_ref->{$attr}.'" ';
+     }
+     return $attr_string;
  }
  ###############################################
  ###############################################
  =pod
- =back
+ =item * &endbodytag()
- =head1 HTTP Helpers
+ Returns a uniform footer for LON-CAPA web pages.
- =over 4
+ Inputs: 1 - optional reference to an args hash
+ If in the hash, key for noredirectlink has a value which evaluates to true,
+ a 'Continue' link is not displayed if the page contains an
+ internal redirect in the <head></head> section,
+ i.e., $env{'internal.head.redirect'} exists
- =item * &endbodytag()
+ =cut
+ sub endbodytag {
+     my ($args) = @_;
+     my $endbodytag;
+     unless ((ref($args) eq 'HASH') && ($args->{'notbody'})) {
+         $endbodytag='</body>';
+     }
+     if ( exists( $env{'internal.head.redirect'} ) ) {
+         if (!(ref($args) eq 'HASH' && $args->{'noredirectlink'})) {
+ 	    $endbodytag=
+ 	        "<br /><a href=\"$env{'internal.head.redirect'}\">".
+ 	        &mt('Continue').'</a>'.
+ 	        $endbodytag;
+         }
+     }
+     return $endbodytag;
+ }
+ =pod
+ =item * &standard_css()
+ Returns a style sheet
+ Inputs: (all optional)
+             domain         -> force to color decorate a page for a specific
+                                domain
+             function       -> force usage of a specific rolish color scheme
+             bgcolor        -> override the default page bgcolor
+ =cut
+ sub standard_css {
+     my ($function,$domain,$bgcolor) = @_;
+     $function  = &get_users_function() if (!$function);
+     my $img    = &designparm($function.'.img',   $domain);
+     my $tabbg  = &designparm($function.'.tabbg', $domain);
+     my $font   = &designparm($function.'.font',  $domain);
+     my $fontmenu = &designparm($function.'.fontmenu', $domain);
+ #second colour for later usage
+     my $sidebg = &designparm($function.'.sidebg',$domain);
+     my $pgbg_or_bgcolor =
+ 	         $bgcolor ||
+ 	         &designparm($function.'.pgbg',  $domain);
+     my $pgbg   = &designparm($function.'.pgbg',  $domain);
+     my $alink  = &designparm($function.'.alink', $domain);
+     my $vlink  = &designparm($function.'.vlink', $domain);
+     my $link   = &designparm($function.'.link',  $domain);
+     my $sans                 = 'Verdana,Arial,Helvetica,sans-serif';
+     my $mono                 = 'monospace';
+     my $data_table_head      = $sidebg;
+     my $data_table_light     = '#FAFAFA';
+     my $data_table_dark      = '#E0E0E0';
+     my $data_table_darker    = '#CCCCCC';
+     my $data_table_highlight = '#FFFF00';
+     my $mail_new             = '#FFBB77';
+     my $mail_new_hover       = '#DD9955';
+     my $mail_read            = '#BBBB77';
+     my $mail_read_hover      = '#999944';
+     my $mail_replied         = '#AAAA88';
+     my $mail_replied_hover   = '#888855';
+     my $mail_other           = '#99BBBB';
+     my $mail_other_hover     = '#669999';
+     my $table_header         = '#DDDDDD';
+     my $feedback_link_bg     = '#BBBBBB';
+     my $lg_border_color      = '#C8C8C8';
+     my $button_hover         = '#BF2317';
+     my $border = ($env{'browser.type'} eq 'explorer' ||
+       $env{'browser.type'} eq 'safari'     ) ? '0 2px 0 2px'
+                                              : '0 3px 0 4px';
+     return <<END;
+ /* needed for iframe to allow 100% height in FF */
+ body, html {
+     margin: 0;
+     padding: 0 0.5%;
+     height: 99%; /* to avoid scrollbars */
+ }
+ body {
+   font-family: $sans;
+   line-height:130%;
+   font-size:0.83em;
+   color:$font;
+ }
+ a:focus,
+ a:focus img {
+   color: red;
+ }
+ form, .inline {
+   display: inline;
+ }
+ .LC_right {
+   text-align:right;
+ }
+ .LC_middle {
+   vertical-align:middle;
+ }
+ .LC_floatleft {
+   float: left;
+ }
+ .LC_floatright {
+   float: right;
+ }
+ .LC_400Box {
+   width:400px;
+ }
+ .LC_iframecontainer {
+     width: 98%;
+     margin: 0;
+     position: fixed;
+     top: 8.5em;
+     bottom: 0;
+ }
+ .LC_iframecontainer iframe{
+     border: none;
+     width: 100%;
+     height: 100%;
+ }
+ .LC_filename {
+   font-family: $mono;
+   white-space:pre;
+   font-size: 120%;
+ }
+ .LC_fileicon {
+   border: none;
+   height: 1.3em;
+   vertical-align: text-bottom;
+   margin-right: 0.3em;
+   text-decoration:none;
+ }
+ .LC_setting {
+   text-decoration:underline;
+ }
+ .LC_error {
+   color: red;
+ }
+ .LC_warning {
+   color: darkorange;
+ }
+ .LC_diff_removed {
+   color: red;
+ }
+ .LC_info,
+ .LC_success,
+ .LC_diff_added {
+   color: green;
+ }
+ div.LC_confirm_box {
+   background-color: #FAFAFA;
+   border: 1px solid $lg_border_color;
+   margin-right: 0;
+   padding: 5px;
+ }
+ div.LC_confirm_box .LC_error img,
+ div.LC_confirm_box .LC_success img {
+   vertical-align: middle;
+ }
+ .LC_maxwidth {
+   max-width: 100%;
+   height: auto;
+ }
+ .LC_textsize_mobile {
+   \@media only screen and (max-device-width: 480px) {
+       -webkit-text-size-adjust:100%; -moz-text-size-adjust:100%; -ms-text-size-adjust:100%;
+   }
+ }
+ .LC_icon {
+   border: none;
+   vertical-align: middle;
+ }
+ .LC_docs_spacer {
+   width: 25px;
+   height: 1px;
+   border: none;
+ }
+ .LC_internal_info {
+   color: #999999;
+ }
+ .LC_discussion {
+   background: $data_table_dark;
+   border: 1px solid black;
+   margin: 2px;
+ }
+ .LC_disc_action_left {
+   background: $sidebg;
+   text-align: left;
+   padding: 4px;
+   margin: 2px;
+ }
+ .LC_disc_action_right {
+   background: $sidebg;
+   text-align: right;
+   padding: 4px;
+   margin: 2px;
+ }
+ .LC_disc_new_item {
+   background: white;
+   border: 2px solid red;
+   margin: 4px;
+   padding: 4px;
+ }
+ .LC_disc_old_item {
+   background: white;
+   margin: 4px;
+   padding: 4px;
+ }
+ table.LC_pastsubmission {
+   border: 1px solid black;
+   margin: 2px;
+ }
+ table#LC_menubuttons {
+   width: 100%;
+   background: $pgbg;
+   border: 2px;
+   border-collapse: separate;
+   padding: 0;
+ }
+ table#LC_title_bar a {
+   color: $fontmenu;
+ }
+ table#LC_title_bar {
+   clear: both;
+   display: none;
+ }
+ table#LC_title_bar,
+ table.LC_breadcrumbs, /* obsolete? */
+ table#LC_title_bar.LC_with_remote {
+   width: 100%;
+   border-color: $pgbg;
+   border-style: solid;
+   border-width: $border;
+   background: $pgbg;
+   color: $fontmenu;
+   border-collapse: collapse;
+   padding: 0;
+   margin: 0;
+ }
+ ul.LC_breadcrumb_tools_outerlist {
+     margin: 0;
+     padding: 0;
+     position: relative;
+     list-style: none;
+ }
+ ul.LC_breadcrumb_tools_outerlist li {
+     display: inline;
+ }
+ .LC_breadcrumb_tools_navigation {
+     padding: 0;
+     margin: 0;
+     float: left;
+ }
+ .LC_breadcrumb_tools_tools {
+     padding: 0;
+     margin: 0;
+     float: right;
+ }
+ .LC_placement_prog {
+     padding-right: 20px;
+     font-weight: bold;
+     font-size: 90%;
+ }
+ table#LC_title_bar td {
+   background: $tabbg;
+ }
+ table#LC_menubuttons img {
+   border: none;
+ }
+ .LC_breadcrumbs_component {
+   float: right;
+   margin: 0 1em;
+ }
+ .LC_breadcrumbs_component img {
+   vertical-align: middle;
+ }
+ .LC_breadcrumbs_hoverable {
+   background: $sidebg;
+ }
+ td.LC_table_cell_checkbox {
+   text-align: center;
+ }
+ .LC_fontsize_small {
+   font-size: 70%;
+ }
+ #LC_breadcrumbs {
+   clear:both;
+   background: $sidebg;
+   border-bottom: 1px solid $lg_border_color;
+   line-height: 2.5em;
+   overflow: hidden;
+   margin: 0;
+   padding: 0;
+   text-align: left;
+ }
+ .LC_head_subbox, .LC_actionbox {
+   clear:both;
+   background: #F8F8F8; /* $sidebg; */
+   border: 1px solid $sidebg;
+   margin: 0 0 10px 0;
+   padding: 3px;
+   text-align: left;
+ }
+ .LC_fontsize_medium {
+   font-size: 85%;
+ }
+ .LC_fontsize_large {
+   font-size: 120%;
+ }
+ .LC_menubuttons_inline_text {
+   color: $font;
+   font-size: 90%;
+   padding-left:3px;
+ }
+ .LC_menubuttons_inline_text img{
+   vertical-align: middle;
+ }
+ li.LC_menubuttons_inline_text img {
+   cursor:pointer;
+   text-decoration: none;
+ }
+ .LC_menubuttons_link {
+   text-decoration: none;
+ }
+ .LC_menubuttons_category {
+   color: $font;
+   background: $pgbg;
+   font-size: larger;
+   font-weight: bold;
+ }
+ td.LC_menubuttons_text {
+   color: $font;
+ }
+ .LC_current_location {
+   background: $tabbg;
+ }
+ table.LC_data_table {
+   border: 1px solid #000000;
+   border-collapse: separate;
+   border-spacing: 1px;
+   background: $pgbg;
+ }
+ .LC_data_table_dense {
+   font-size: small;
+ }
+ table.LC_nested_outer {
+   border: 1px solid #000000;
+   border-collapse: collapse;
+   border-spacing: 0;
+   width: 100%;
+ }
+ table.LC_innerpickbox,
+ table.LC_nested {
+   border: none;
+   border-collapse: collapse;
+   border-spacing: 0;
+   width: 100%;
+ }
+ table.LC_data_table tr th,
+ table.LC_calendar tr th,
+ table.LC_prior_tries tr th,
+ table.LC_innerpickbox tr th {
+   font-weight: bold;
+   background-color: $data_table_head;
+   color:$fontmenu;
+   font-size:90%;
+ }
+ table.LC_innerpickbox tr th,
+ table.LC_innerpickbox tr td {
+   vertical-align: top;
+ }
+ table.LC_data_table tr.LC_info_row > td {
+   background-color: #CCCCCC;
+   font-weight: bold;
+   text-align: left;
+ }
+ table.LC_data_table tr.LC_odd_row > td {
+   background-color: $data_table_light;
+   padding: 2px;
+   vertical-align: top;
+ }
+ table.LC_pick_box tr > td.LC_odd_row {
+   background-color: $data_table_light;
+   vertical-align: top;
+ }
+ table.LC_data_table tr.LC_even_row > td {
+   background-color: $data_table_dark;
+   padding: 2px;
+   vertical-align: top;
+ }
+ table.LC_pick_box tr > td.LC_even_row {
+   background-color: $data_table_dark;
+   vertical-align: top;
+ }
+ table.LC_data_table tr.LC_data_table_highlight td {
+   background-color: $data_table_darker;
+ }
+ table.LC_data_table tr td.LC_leftcol_header {
+   background-color: $data_table_head;
+   font-weight: bold;
+ }
+ table.LC_data_table tr.LC_empty_row td,
+ table.LC_nested tr.LC_empty_row td {
+   font-weight: bold;
+   font-style: italic;
+   text-align: center;
+   padding: 8px;
+ }
+ table.LC_data_table tr.LC_empty_row td,
+ table.LC_data_table tr.LC_footer_row td {
+   background-color: $sidebg;
+ }
+ table.LC_nested tr.LC_empty_row td {
+   background-color: #FFFFFF;
+ }
+ table.LC_caption {
+ }
+ table.LC_nested tr.LC_empty_row td {
+   padding: 4ex
+ }
+ table.LC_nested_outer tr th {
+   font-weight: bold;
+   color:$fontmenu;
+   background-color: $data_table_head;
+   font-size: small;
+   border-bottom: 1px solid #000000;
+ }
+ table.LC_nested_outer tr td.LC_subheader {
+   background-color: $data_table_head;
+   font-weight: bold;
+   font-size: small;
+   border-bottom: 1px solid #000000;
+   text-align: right;
+ }
+ table.LC_nested tr.LC_info_row td {
+   background-color: #CCCCCC;
+   font-weight: bold;
+   font-size: small;
+   text-align: center;
+ }
+ table.LC_nested tr.LC_info_row td.LC_left_item,
+ table.LC_nested_outer tr th.LC_left_item {
+   text-align: left;
+ }
+ table.LC_nested td {
+   background-color: #FFFFFF;
+   font-size: small;
+ }
+ table.LC_nested_outer tr th.LC_right_item,
+ table.LC_nested tr.LC_info_row td.LC_right_item,
+ table.LC_nested tr.LC_odd_row td.LC_right_item,
+ table.LC_nested tr td.LC_right_item {
+   text-align: right;
+ }
+ table.LC_nested tr.LC_odd_row td {
+   background-color: #EEEEEE;
+ }
+ table.LC_createuser {
+ }
+ table.LC_createuser tr.LC_section_row td {
+   font-size: small;
+ }
+ table.LC_createuser tr.LC_info_row td  {
+   background-color: #CCCCCC;
+   font-weight: bold;
+   text-align: center;
+ }
+ table.LC_calendar {
+   border: 1px solid #000000;
+   border-collapse: collapse;
+   width: 98%;
+ }
+ table.LC_calendar_pickdate {
+   font-size: xx-small;
+ }
+ table.LC_calendar tr td {
+   border: 1px solid #000000;
+   vertical-align: top;
+   width: 14%;
+ }
+ table.LC_calendar tr td.LC_calendar_day_empty {
+   background-color: $data_table_dark;
+ }
+ table.LC_calendar tr td.LC_calendar_day_current {
+   background-color: $data_table_highlight;
+ }
+ table.LC_data_table tr td.LC_mail_new {
+   background-color: $mail_new;
+ }
+ table.LC_data_table tr.LC_mail_new:hover {
+   background-color: $mail_new_hover;
+ }
+ table.LC_data_table tr td.LC_mail_read {
+   background-color: $mail_read;
+ }
+ /*
+ table.LC_data_table tr.LC_mail_read:hover {
+   background-color: $mail_read_hover;
+ }
+ */
+ table.LC_data_table tr td.LC_mail_replied {
+   background-color: $mail_replied;
+ }
+ /*
+ table.LC_data_table tr.LC_mail_replied:hover {
+   background-color: $mail_replied_hover;
+ }
+ */
+ table.LC_data_table tr td.LC_mail_other {
+   background-color: $mail_other;
+ }
+ /*
+ table.LC_data_table tr.LC_mail_other:hover {
+   background-color: $mail_other_hover;
+ }
+ */
+ table.LC_data_table tr > td.LC_browser_file,
+ table.LC_data_table tr > td.LC_browser_file_published {
+   background: #AAEE77;
+ }
+ table.LC_data_table tr > td.LC_browser_file_locked,
+ table.LC_data_table tr > td.LC_browser_file_unpublished {
+   background: #FFAA99;
+ }
+ table.LC_data_table tr > td.LC_browser_file_obsolete {
+   background: #888888;
+ }
+ table.LC_data_table tr > td.LC_browser_file_modified,
+ table.LC_data_table tr > td.LC_browser_file_metamodified {
+   background: #F8F866;
+ }
+ table.LC_data_table tr.LC_browser_folder > td {
+   background: #E0E8FF;
+ }
+ table.LC_data_table tr > td.LC_roles_is {
+   /* background: #77FF77; */
+ }
+ table.LC_data_table tr > td.LC_roles_future {
+   border-right: 8px solid #FFFF77;
+ }
+ table.LC_data_table tr > td.LC_roles_will {
+   border-right: 8px solid #FFAA77;
+ }
+ table.LC_data_table tr > td.LC_roles_expired {
+   border-right: 8px solid #FF7777;
+ }
+ table.LC_data_table tr > td.LC_roles_will_not {
+   border-right: 8px solid #AAFF77;
+ }
+ table.LC_data_table tr > td.LC_roles_selected {
+   border-right: 8px solid #11CC55;
+ }
+ span.LC_current_location {
+   font-size:larger;
+   background: $pgbg;
+ }
+ span.LC_current_nav_location {
+   font-weight:bold;
+   background: $sidebg;
+ }
+ span.LC_parm_menu_item {
+   font-size: larger;
+ }
+ span.LC_parm_scope_all {
+   color: red;
+ }
+ span.LC_parm_scope_folder {
+   color: green;
+ }
+ span.LC_parm_scope_resource {
+   color: orange;
+ }
+ span.LC_parm_part {
+   color: blue;
+ }
+ span.LC_parm_folder,
+ span.LC_parm_symb {
+   font-size: x-small;
+   font-family: $mono;
+   color: #AAAAAA;
+ }
+ ul.LC_parm_parmlist li {
+   display: inline-block;
+   padding: 0.3em 0.8em;
+   vertical-align: top;
+   width: 150px;
+   border-top:1px solid $lg_border_color;
+ }
+ td.LC_parm_overview_level_menu,
+ td.LC_parm_overview_map_menu,
+ td.LC_parm_overview_parm_selectors,
+ td.LC_parm_overview_restrictions  {
+   border: 1px solid black;
+   border-collapse: collapse;
+ }
+ table.LC_parm_overview_restrictions td {
+   border-width: 1px 4px 1px 4px;
+   border-style: solid;
+   border-color: $pgbg;
+   text-align: center;
+ }
+ table.LC_parm_overview_restrictions th {
+   background: $tabbg;
+   border-width: 1px 4px 1px 4px;
+   border-style: solid;
+   border-color: $pgbg;
+ }
+ table#LC_helpmenu {
+   border: none;
+   height: 55px;
+   border-spacing: 0;
+ }
+ table#LC_helpmenu fieldset legend {
+   font-size: larger;
+ }
+ table#LC_helpmenu_links {
+   width: 100%;
+   border: 1px solid black;
+   background: $pgbg;
+   padding: 0;
+   border-spacing: 1px;
+ }
+ table#LC_helpmenu_links tr td {
+   padding: 1px;
+   background: $tabbg;
+   text-align: center;
+   font-weight: bold;
+ }
+ table#LC_helpmenu_links a:link,
+ table#LC_helpmenu_links a:visited,
+ table#LC_helpmenu_links a:active {
+   text-decoration: none;
+   color: $font;
+ }
+ table#LC_helpmenu_links a:hover {
+   text-decoration: underline;
+   color: $vlink;
+ }
+ .LC_chrt_popup_exists {
+   border: 1px solid #339933;
+   margin: -1px;
+ }
+ .LC_chrt_popup_up {
+   border: 1px solid yellow;
+   margin: -1px;
+ }
+ .LC_chrt_popup {
+   border: 1px solid #8888FF;
+   background: #CCCCFF;
+ }
+ table.LC_pick_box {
+   border-collapse: separate;
+   background: white;
+   border: 1px solid black;
+   border-spacing: 1px;
+ }
+ table.LC_pick_box td.LC_pick_box_title {
+   background: $sidebg;
+   font-weight: bold;
+   text-align: left;
+   vertical-align: top;
+   width: 184px;
+   padding: 8px;
+ }
+ table.LC_pick_box td.LC_pick_box_value {
+   text-align: left;
+   padding: 8px;
+ }
+ table.LC_pick_box td.LC_pick_box_select {
+   text-align: left;
+   padding: 8px;
+ }
+ table.LC_pick_box td.LC_pick_box_separator {
+   padding: 0;
+   height: 1px;
+   background: black;
+ }
+ table.LC_pick_box td.LC_pick_box_submit {
+   text-align: right;
+ }
+ table.LC_pick_box td.LC_evenrow_value {
+   text-align: left;
+   padding: 8px;
+   background-color: $data_table_light;
+ }
+ table.LC_pick_box td.LC_oddrow_value {
+   text-align: left;
+   padding: 8px;
+   background-color: $data_table_light;
+ }
+ span.LC_helpform_receipt_cat {
+   font-weight: bold;
+ }
+ table.LC_group_priv_box {
+   background: white;
+   border: 1px solid black;
+   border-spacing: 1px;
+ }
+ table.LC_group_priv_box td.LC_pick_box_title {
+   background: $tabbg;
+   font-weight: bold;
+   text-align: right;
+   width: 184px;
+ }
+ table.LC_group_priv_box td.LC_groups_fixed {
+   background: $data_table_light;
+   text-align: center;
+ }
+ table.LC_group_priv_box td.LC_groups_optional {
+   background: $data_table_dark;
+   text-align: center;
+ }
+ table.LC_group_priv_box td.LC_groups_functionality {
+   background: $data_table_darker;
+   text-align: center;
+   font-weight: bold;
+ }
+ table.LC_group_priv td {
+   text-align: left;
+   padding: 0;
+ }
+ .LC_navbuttons {
+   margin: 2ex 0ex 2ex 0ex;
+ }
+ .LC_topic_bar {
+   font-weight: bold;
+   background: $tabbg;
+   margin: 1em 0em 1em 2em;
+   padding: 3px;
+   font-size: 1.2em;
+ }
+ .LC_topic_bar span {
+   left: 0.5em;
+   position: absolute;
+   vertical-align: middle;
+   font-size: 1.2em;
+ }
+ table.LC_course_group_status {
+   margin: 20px;
+ }
+ table.LC_status_selector td {
+   vertical-align: top;
+   text-align: center;
+   padding: 4px;
+ }
+ div.LC_feedback_link {
+   clear: both;
+   background: $sidebg;
+   width: 100%;
+   padding-bottom: 10px;
+   border: 1px $tabbg solid;
+   height: 22px;
+   line-height: 22px;
+   padding-top: 5px;
+ }
+ div.LC_feedback_link img {
+   height: 22px;
+   vertical-align:middle;
+ }
+ div.LC_feedback_link a {
+   text-decoration: none;
+ }
+ div.LC_comblock {
+   display:inline;
+   color:$font;
+   font-size:90%;
+ }
+ div.LC_feedback_link div.LC_comblock {
+   padding-left:5px;
+ }
+ div.LC_feedback_link div.LC_comblock a {
+   color:$font;
+ }
+ span.LC_feedback_link {
+   /* background: $feedback_link_bg; */
+   font-size: larger;
+ }
+ span.LC_message_link {
+   /* background: $feedback_link_bg; */
+   font-size: larger;
+   position: absolute;
+   right: 1em;
+ }
+ table.LC_prior_tries {
+   border: 1px solid #000000;
+   border-collapse: separate;
+   border-spacing: 1px;
+ }
+ table.LC_prior_tries td {
+   padding: 2px;
+ }
+ .LC_answer_correct {
+   background: lightgreen;
+   color: darkgreen;
+   padding: 6px;
+ }
+ .LC_answer_charged_try {
+   background: #FFAAAA;
+   color: darkred;
+   padding: 6px;
+ }
+ .LC_answer_not_charged_try,
+ .LC_answer_no_grade,
+ .LC_answer_late {
+   background: lightyellow;
+   color: black;
+   padding: 6px;
+ }
+ .LC_answer_previous {
+   background: lightblue;
+   color: darkblue;
+   padding: 6px;
+ }
+ .LC_answer_no_message {
+   background: #FFFFFF;
+   color: black;
+   padding: 6px;
+ }
+ .LC_answer_unknown {
+   background: orange;
+   color: black;
+   padding: 6px;
+ }
+ span.LC_prior_numerical,
+ span.LC_prior_string,
+ span.LC_prior_custom,
+ span.LC_prior_reaction,
+ span.LC_prior_math {
+   font-family: $mono;
+   white-space: pre;
+ }
+ span.LC_prior_string {
+   font-family: $mono;
+   white-space: pre;
+ }
+ table.LC_prior_option {
+   width: 100%;
+   border-collapse: collapse;
+ }
+ table.LC_prior_rank,
+ table.LC_prior_match {
+   border-collapse: collapse;
+ }
+ table.LC_prior_option tr td,
+ table.LC_prior_rank tr td,
+ table.LC_prior_match tr td {
+   border: 1px solid #000000;
+ }
+ .LC_nobreak {
+   white-space: nowrap;
+ }
+ span.LC_cusr_emph {
+   font-style: italic;
+ }
+ span.LC_cusr_subheading {
+   font-weight: normal;
+   font-size: 85%;
+ }
+ div.LC_docs_entry_move {
+   border: 1px solid #BBBBBB;
+   background: #DDDDDD;
+   width: 22px;
+   padding: 1px;
+   margin: 0;
+ }
+ table.LC_data_table tr > td.LC_docs_entry_commands,
+ table.LC_data_table tr > td.LC_docs_entry_parameter {
+   font-size: x-small;
+ }
+ .LC_docs_entry_parameter {
+   white-space: nowrap;
+ }
+ .LC_docs_copy {
+   color: #000099;
+ }
+ .LC_docs_cut {
+   color: #550044;
+ }
+ .LC_docs_rename {
+   color: #009900;
+ }
+ .LC_docs_remove {
+   color: #990000;
+ }
+ .LC_docs_reinit_warn,
+ .LC_docs_ext_edit {
+   font-size: x-small;
+ }
+ table.LC_docs_adddocs td,
+ table.LC_docs_adddocs th {
+   border: 1px solid #BBBBBB;
+   padding: 4px;
+   background: #DDDDDD;
+ }
+ table.LC_sty_begin {
+   background: #BBFFBB;
+ }
+ table.LC_sty_end {
+   background: #FFBBBB;
+ }
+ table.LC_double_column {
+   border-width: 0;
+   border-collapse: collapse;
+   width: 100%;
+   padding: 2px;
+ }
+ table.LC_double_column tr td.LC_left_col {
+   top: 2px;
+   left: 2px;
+   width: 47%;
+   vertical-align: top;
+ }
+ table.LC_double_column tr td.LC_right_col {
+   top: 2px;
+   right: 2px;
+   width: 47%;
+   vertical-align: top;
+ }
+ div.LC_left_float {
+   float: left;
+   padding-right: 5%;
+   padding-bottom: 4px;
+ }
+ div.LC_clear_float_header {
+   padding-bottom: 2px;
+ }
+ div.LC_clear_float_footer {
+   padding-top: 10px;
+   clear: both;
+ }
+ div.LC_grade_show_user {
+ /*  border-left: 5px solid $sidebg; */
+   border-top: 5px solid #000000;
+   margin: 50px 0 0 0;
+   padding: 15px 0 5px 10px;
+ }
+ div.LC_grade_show_user_odd_row {
+ /*  border-left: 5px solid #000000; */
+ }
+ div.LC_grade_show_user div.LC_Box {
+   margin-right: 50px;
+ }
+ div.LC_grade_submissions,
+ div.LC_grade_message_center,
+ div.LC_grade_info_links {
+   margin: 5px;
+   width: 99%;
+   background: #FFFFFF;
+ }
+ div.LC_grade_submissions_header,
+ div.LC_grade_message_center_header {
+   font-weight: bold;
+   font-size: large;
+ }
+ div.LC_grade_submissions_body,
+ div.LC_grade_message_center_body {
+   border: 1px solid black;
+   width: 99%;
+   background: #FFFFFF;
+ }
+ table.LC_scantron_action {
+   width: 100%;
+ }
+ table.LC_scantron_action tr th {
+   font-weight:bold;
+   font-style:normal;
+ }
+ .LC_edit_problem_header,
+ div.LC_edit_problem_footer {
+   font-weight: normal;
+   font-size:  medium;
+   margin: 2px;
+   background-color: $sidebg;
+ }
+ div.LC_edit_problem_header,
+ div.LC_edit_problem_header div,
+ div.LC_edit_problem_footer,
+ div.LC_edit_problem_footer div,
+ div.LC_edit_problem_editxml_header,
+ div.LC_edit_problem_editxml_header div {
+   z-index: 100;
+ }
+ div.LC_edit_problem_header_title {
+   font-weight: bold;
+   font-size: larger;
+   background: $tabbg;
+   padding: 3px;
+   margin: 0 0 5px 0;
+ }
+ table.LC_edit_problem_header_title {
+   width: 100%;
+   background: $tabbg;
+ }
+ div.LC_edit_actionbar {
+     background-color: $sidebg;
+     margin: 0;
+     padding: 0;
+     line-height: 200%;
+ }
+ div.LC_edit_actionbar div{
+     padding: 0;
+     margin: 0;
+     display: inline-block;
+ }
+ .LC_edit_opt {
+   padding-left: 1em;
+   white-space: nowrap;
+ }
+ .LC_edit_problem_latexhelper{
+     text-align: right;
+ }
+ #LC_edit_problem_colorful div{
+     margin-left: 40px;
+ }
+ #LC_edit_problem_codemirror div{
+     margin-left: 0px;
+ }
+ img.stift {
+   border-width: 0;
+   vertical-align: middle;
+ }
+ table td.LC_mainmenu_col_fieldset {
+   vertical-align: top;
+ }
+ div.LC_createcourse {
+   margin: 10px 10px 10px 10px;
+ }
+ .LC_dccid {
+   float: right;
+   margin: 0.2em 0 0 0;
+   padding: 0;
+   font-size: 90%;
+   display:none;
+ }
+ ol.LC_primary_menu a:hover,
+ ol#LC_MenuBreadcrumbs a:hover,
+ ol#LC_PathBreadcrumbs a:hover,
+ ul#LC_secondary_menu a:hover,
+ .LC_FormSectionClearButton input:hover
+ ul.LC_TabContent   li:hover a {
+   color:$button_hover;
+   text-decoration:none;
+ }
+ h1 {
+   padding: 0;
+   line-height:130%;
+ }
+ h2,
+ h3,
+ h4,
+ h5,
+ h6 {
+   margin: 5px 0 5px 0;
+   padding: 0;
+   line-height:130%;
+ }
+ .LC_hcell {
+   padding:3px 15px 3px 15px;
+   margin: 0;
+   background-color:$tabbg;
+   color:$fontmenu;
+   border-bottom:solid 1px $lg_border_color;
+ }
+ .LC_Box > .LC_hcell {
+   margin: 0 -10px 10px -10px;
+ }
+ .LC_noBorder {
+   border: 0;
+ }
+ .LC_FormSectionClearButton input {
+   background-color:transparent;
+   border: none;
+   cursor:pointer;
+   text-decoration:underline;
+ }
+ .LC_help_open_topic {
+   color: #FFFFFF;
+   background-color: #EEEEFF;
+   margin: 1px;
+   padding: 4px;
+   border: 1px solid #000033;
+   white-space: nowrap;
+   /* vertical-align: middle; */
+ }
+ dl,
+ ul,
+ div,
+ fieldset {
+   margin: 10px 10px 10px 0;
+   /* overflow: hidden; */
+ }
+ article.geogebraweb div {
+     margin: 0;
+ }
+ fieldset > legend {
+   font-weight: bold;
+   padding: 0 5px 0 5px;
+ }
+ #LC_nav_bar {
+   float: left;
+   background-color: $pgbg_or_bgcolor;
+   margin: 0 0 2px 0;
+ }
+ #LC_realm {
+   margin: 0.2em 0 0 0;
+   padding: 0;
+   font-weight: bold;
+   text-align: center;
+   background-color: $pgbg_or_bgcolor;
+ }
+ #LC_nav_bar em {
+   font-weight: bold;
+   font-style: normal;
+ }
+ ol.LC_primary_menu {
+   margin: 0;
+   padding: 0;
+ }
+ ol#LC_PathBreadcrumbs {
+   margin: 0;
+ }
+ ol.LC_primary_menu li {
+   color: RGB(80, 80, 80);
+   vertical-align: middle;
+   text-align: left;
+   list-style: none;
+   position: relative;
+   float: left;
+   z-index: 100; /* will be displayed above codemirror and underneath the help-layer */
+   line-height: 1.5em;
+ }
+ ol.LC_primary_menu li a,
+ ol.LC_primary_menu li p {
+   display: block;
+   margin: 0;
+   padding: 0 5px 0 10px;
+   text-decoration: none;
+ }
+ ol.LC_primary_menu li p span.LC_primary_menu_innertitle {
+   display: inline-block;
+   width: 95%;
+   text-align: left;
+ }
+ ol.LC_primary_menu li p span.LC_primary_menu_innerarrow {
+   display: inline-block;
+   width: 5%;
+   float: right;
+   text-align: right;
+   font-size: 70%;
+ }
+ ol.LC_primary_menu ul {
+   display: none;
+   width: 15em;
+   background-color: $data_table_light;
+   position: absolute;
+   top: 100%;
+ }
+ ol.LC_primary_menu ul ul {
+   left: 100%;
+   top: 0;
+ }
+ ol.LC_primary_menu li:hover > ul, ol.LC_primary_menu li.hover > ul {
+   display: block;
+   position: absolute;
+   margin: 0;
+   padding: 0;
+   z-index: 2;
+ }
+ ol.LC_primary_menu li:hover li, ol.LC_primary_menu li.hover li {
+ /* First Submenu -> size should be smaller than the menu title of the whole menu */
+   font-size: 90%;
+   vertical-align: top;
+   float: none;
+   border-left: 1px solid black;
+   border-right: 1px solid black;
+ /* A dark bottom border to visualize different menu options;
+ overwritten in the create_submenu routine for the last border-bottom of the menu */
+   border-bottom: 1px solid $data_table_dark;
+ }
+ ol.LC_primary_menu li li p:hover {
+   color:$button_hover;
+   text-decoration:none;
+   background-color:$data_table_dark;
+ }
+ ol.LC_primary_menu li li a:hover {
+    color:$button_hover;
+    background-color:$data_table_dark;
+ }
+ /* Font-size equal to the size of the predecessors*/
+ ol.LC_primary_menu li:hover li li {
+   font-size: 100%;
+ }
+ ol.LC_primary_menu li img {
+   vertical-align: bottom;
+   height: 1.1em;
+   margin: 0.2em 0 0 0;
+ }
+ ol.LC_primary_menu a {
+   color: RGB(80, 80, 80);
+   text-decoration: none;
+ }
+ ol.LC_primary_menu a.LC_new_message {
+   font-weight:bold;
+   color: darkred;
+ }
+ ol.LC_docs_parameters {
+   margin-left: 0;
+   padding: 0;
+   list-style: none;
+ }
+ ol.LC_docs_parameters li {
+   margin: 0;
+   padding-right: 20px;
+   display: inline;
+ }
+ ol.LC_docs_parameters li:before {
+   content: "\\002022 \\0020";
+ }
+ li.LC_docs_parameters_title {
+   font-weight: bold;
+ }
+ ol.LC_docs_parameters li.LC_docs_parameters_title:before {
+   content: "";
+ }
+ ul#LC_secondary_menu {
+   clear: right;
+   color: $fontmenu;
+   background: $tabbg;
+   list-style: none;
+   padding: 0;
+   margin: 0;
+   width: 100%;
+   text-align: left;
+   float: left;
+ }
+ ul#LC_secondary_menu li {
+   font-weight: bold;
+   line-height: 1.8em;
+   border-right: 1px solid black;
+   float: left;
+ }
+ ul#LC_secondary_menu li.LC_hoverable:hover, ul#LC_secondary_menu li.hover {
+   background-color: $data_table_light;
+ }
+ ul#LC_secondary_menu li a {
+   padding: 0 0.8em;
+ }
+ ul#LC_secondary_menu li ul {
+   display: none;
+ }
+ ul#LC_secondary_menu li:hover ul, ul#LC_secondary_menu li.hover ul {
+   display: block;
+   position: absolute;
+   margin: 0;
+   padding: 0;
+   list-style:none;
+   float: none;
+   background-color: $data_table_light;
+   z-index: 2;
+   margin-left: -1px;
+ }
+ ul#LC_secondary_menu li ul li {
+   font-size: 90%;
+   vertical-align: top;
+   border-left: 1px solid black;
+   border-right: 1px solid black;
+   background-color: $data_table_light;
+   list-style:none;
+   float: none;
+ }
+ ul#LC_secondary_menu li ul li:hover, ul#LC_secondary_menu li ul li.hover {
+   background-color: $data_table_dark;
+ }
+ ul.LC_TabContent {
+   display:block;
+   background: $sidebg;
+   border-bottom: solid 1px $lg_border_color;
+   list-style:none;
+   margin: -1px -10px 0 -10px;
+   padding: 0;
+ }
+ ul.LC_TabContent li,
+ ul.LC_TabContentBigger li {
+   float:left;
+ }
+ ul#LC_secondary_menu li a {
+   color: $fontmenu;
+   text-decoration: none;
+ }
+ ul.LC_TabContent {
+   min-height:20px;
+ }
+ ul.LC_TabContent li {
+   vertical-align:middle;
+   padding: 0 16px 0 10px;
+   background-color:$tabbg;
+   border-bottom:solid 1px $lg_border_color;
+   border-left: solid 1px $font;
+ }
+ ul.LC_TabContent .right {
+   float:right;
+ }
+ ul.LC_TabContent li a,
+ ul.LC_TabContent li {
+   color:rgb(47,47,47);
+   text-decoration:none;
+   font-size:95%;
+   font-weight:bold;
+   min-height:20px;
+ }
+ ul.LC_TabContent li a:hover,
+ ul.LC_TabContent li a:focus {
+   color: $button_hover;
+   background:none;
+   outline:none;
+ }
+ ul.LC_TabContent li:hover {
+   color: $button_hover;
+   cursor:pointer;
+ }
+ ul.LC_TabContent li.active {
+   color: $font;
+   background:#FFFFFF url(/adm/lonIcons/open.gif) no-repeat scroll right center;
+   border-bottom:solid 1px #FFFFFF;
+   cursor: default;
+ }
+ ul.LC_TabContent li.active a {
+   color:$font;
+   background:#FFFFFF;
+   outline: none;
+ }
+ ul.LC_TabContent li.goback {
+   float: left;
+   border-left: none;
+ }
+ #maincoursedoc {
+   clear:both;
+ }
+ ul.LC_TabContentBigger {
+   display:block;
+   list-style:none;
+   padding: 0;
+ }
+ ul.LC_TabContentBigger li {
+   vertical-align:bottom;
+   height: 30px;
+   font-size:110%;
+   font-weight:bold;
+   color: #737373;
+ }
+ ul.LC_TabContentBigger li.active {
+   position: relative;
+   top: 1px;
+ }
+ ul.LC_TabContentBigger li a {
+   background:url('/adm/lonIcons/tabbgleft.gif') left bottom no-repeat;
+   height: 30px;
+   line-height: 30px;
+   text-align: center;
+   display: block;
+   text-decoration: none;
+   outline: none;
+ }
+ ul.LC_TabContentBigger li.active a {
+   background:url('/adm/lonIcons/tabbgleft.gif') left top no-repeat;
+   color:$font;
+ }
+ ul.LC_TabContentBigger li b {
+   background: url('/adm/lonIcons/tabbgright.gif') no-repeat right bottom;
+   display: block;
+   float: left;
+   padding: 0 30px;
+   border-bottom: 1px solid $lg_border_color;
+ }
+ ul.LC_TabContentBigger li:hover b {
+   color:$button_hover;
+ }
+ ul.LC_TabContentBigger li.active b {
+   background:url('/adm/lonIcons/tabbgright.gif') right top no-repeat;
+   color:$font;
+   border: 0;
+ }
+ ul.LC_CourseBreadcrumbs {
+   background: $sidebg;
+   height: 2em;
+   padding-left: 10px;
+   margin: 0;
+   list-style-position: inside;
+ }
+ ol#LC_MenuBreadcrumbs,
+ ol#LC_PathBreadcrumbs {
+   padding-left: 10px;
+   margin: 0;
+   height: 2.5em;  /* equal to #LC_breadcrumbs line-height */
+ }
+ ol#LC_MenuBreadcrumbs li,
+ ol#LC_PathBreadcrumbs li,
+ ul.LC_CourseBreadcrumbs li {
+   display: inline;
+   white-space: normal;
+ }
+ ol#LC_MenuBreadcrumbs li a,
+ ul.LC_CourseBreadcrumbs li a {
+   text-decoration: none;
+   font-size:90%;
+ }
+ ol#LC_MenuBreadcrumbs h1 {
+   display: inline;
+   font-size: 90%;
+   line-height: 2.5em;
+   margin: 0;
+   padding: 0;
+ }
+ ol#LC_PathBreadcrumbs li a {
+   text-decoration:none;
+   font-size:100%;
+   font-weight:bold;
+ }
+ .LC_Box {
+   border: solid 1px $lg_border_color;
+   padding: 0 10px 10px 10px;
+ }
+ .LC_DocsBox {
+   border: solid 1px $lg_border_color;
+   padding: 0 0 10px 10px;
+ }
+ .LC_AboutMe_Image {
+   float:left;
+   margin-right:10px;
+ }
+ .LC_Clear_AboutMe_Image {
+   clear:left;
+ }
+ dl.LC_ListStyleClean dt {
+   padding-right: 5px;
+   display: table-header-group;
+ }
+ dl.LC_ListStyleClean dd {
+   display: table-row;
+ }
+ .LC_ListStyleClean,
+ .LC_ListStyleSimple,
+ .LC_ListStyleNormal,
+ .LC_ListStyleSpecial {
+   /* display:block; */
+   list-style-position: inside;
+   list-style-type: none;
+   overflow: hidden;
+   padding: 0;
+ }
+ .LC_ListStyleSimple li,
+ .LC_ListStyleSimple dd,
+ .LC_ListStyleNormal li,
+ .LC_ListStyleNormal dd,
+ .LC_ListStyleSpecial li,
+ .LC_ListStyleSpecial dd {
+   margin: 0;
+   padding: 5px 5px 5px 10px;
+   clear: both;
+ }
+ .LC_ListStyleClean li,
+ .LC_ListStyleClean dd {
+   padding-top: 0;
+   padding-bottom: 0;
+ }
+ .LC_ListStyleSimple dd,
+ .LC_ListStyleSimple li {
+   border-bottom: solid 1px $lg_border_color;
+ }
+ .LC_ListStyleSpecial li,
+ .LC_ListStyleSpecial dd {
+   list-style-type: none;
+   background-color: RGB(220, 220, 220);
+   margin-bottom: 4px;
+ }
+ table.LC_SimpleTable {
+   margin:5px;
+   border:solid 1px $lg_border_color;
+ }
+ table.LC_SimpleTable tr {
+   padding: 0;
+   border:solid 1px $lg_border_color;
+ }
+ table.LC_SimpleTable thead {
+   background:rgb(220,220,220);
+ }
+ div.LC_columnSection {
+   display: block;
+   clear: both;
+   overflow: hidden;
+   margin: 0;
+ }
+ div.LC_columnSection>* {
+   float: left;
+   margin: 10px 20px 10px 0;
+   overflow:hidden;
+ }
+ table em {
+   font-weight: bold;
+   font-style: normal;
+ }
+ table.LC_tableBrowseRes,
+ table.LC_tableOfContent {
+   border:none;
+   border-spacing: 1px;
+   padding: 3px;
+   background-color: #FFFFFF;
+   font-size: 90%;
+ }
+ table.LC_tableOfContent {
+   border-collapse: collapse;
+ }
+ table.LC_tableBrowseRes a,
+ table.LC_tableOfContent a {
+   background-color: transparent;
+   text-decoration: none;
+ }
+ table.LC_tableOfContent img {
+   border: none;
+   height: 1.3em;
+   vertical-align: text-bottom;
+   margin-right: 0.3em;
+ }
+ a#LC_content_toolbar_firsthomework {
+   background-image:url(/res/adm/pages/open-first-problem.gif);
+ }
+ a#LC_content_toolbar_everything {
+   background-image:url(/res/adm/pages/show-all.gif);
+ }
+ a#LC_content_toolbar_uncompleted {
+   background-image:url(/res/adm/pages/show-incomplete-problems.gif);
+ }
+ #LC_content_toolbar_clearbubbles {
+   background-image:url(/res/adm/pages/mark-discussionentries-read.gif);
+ }
+ a#LC_content_toolbar_changefolder {
+   background : url(/res/adm/pages/close-all-folders.gif) top center ;
+ }
+ a#LC_content_toolbar_changefolder_toggled {
+   background-image:url(/res/adm/pages/open-all-folders.gif);
+ }
+ a#LC_content_toolbar_edittoplevel {
+   background-image:url(/res/adm/pages/edittoplevel.gif);
+ }
+ ul#LC_toolbar li a:hover {
+   background-position: bottom center;
+ }
+ ul#LC_toolbar {
+   padding: 0;
+   margin: 2px;
+   list-style:none;
+   position:relative;
+   background-color:white;
+   overflow: auto;
+ }
+ ul#LC_toolbar li {
+   border:1px solid white;
+   padding: 0;
+   margin: 0;
+   float: left;
+   display:inline;
+   vertical-align:middle;
+   white-space: nowrap;
+ }
+ a.LC_toolbarItem {
+   display:block;
+   padding: 0;
+   margin: 0;
+   height: 32px;
+   width: 32px;
+   color:white;
+   border: none;
+   background-repeat:no-repeat;
+   background-color:transparent;
+ }
+ ul.LC_funclist {
+     margin: 0;
+     padding: 0.5em 1em 0.5em 0;
+ }
+ ul.LC_funclist > li:first-child {
+     font-weight:bold;
+     margin-left:0.8em;
+ }
+ ul.LC_funclist + ul.LC_funclist {
+     /*
+        left border as a seperator if we have more than
+        one list
+     */
+     border-left: 1px solid $sidebg;
+     /*
+        this hides the left border behind the border of the
+        outer box if element is wrapped to the next 'line'
+     */
+     margin-left: -1px;
+ }
+ ul.LC_funclist li {
+   display: inline;
+   white-space: nowrap;
+   margin: 0 0 0 25px;
+   line-height: 150%;
+ }
+ .LC_hidden {
+   display: none;
+ }
+ .LCmodal-overlay {
+ 		position:fixed;
+ 		top:0;
+ 		right:0;
+ 		bottom:0;
+ 		left:0;
+ 		height:100%;
+ 		width:100%;
+ 		margin:0;
+ 		padding:0;
+ 		background:#999;
+ 		opacity:.75;
+ 		filter: alpha(opacity=75);
+ 		-moz-opacity: 0.75;
+ 		z-index:101;
+ }
+ * html .LCmodal-overlay {
+ 		position: absolute;
+ 		height: expression(document.body.scrollHeight > document.body.offsetHeight ? document.body.scrollHeight : document.body.offsetHeight + 'px');
+ }
+ .LCmodal-window {
+ 		position:fixed;
+ 		top:50%;
+ 		left:50%;
+ 		margin:0;
+ 		padding:0;
+ 		z-index:102;
+ 	}
+ * html .LCmodal-window {
+ 		position:absolute;
+ }
+ .LCclose-window {
+ 		position:absolute;
+ 		width:32px;
+ 		height:32px;
+ 		right:8px;
+ 		top:8px;
+ 		background:transparent url('/res/adm/pages/process-stop.png') no-repeat scroll right top;
+ 		text-indent:-99999px;
+ 		overflow:hidden;
+ 		cursor:pointer;
+ }
+ /*
+   styles used for response display
+ */
+ div.LC_radiofoil, div.LC_rankfoil {
+   margin: .5em 0em .5em 0em;
+ }
+ table.LC_itemgroup {
+   margin-top: 1em;
+ }
+ /*
+   styles used by TTH when "Default set of options to pass to tth/m
+   when converting TeX" in course settings has been set
+   option passed: -t
+ */
+ td div.comp { margin-top: -0.6ex; margin-bottom: -1ex;}
+ td div.comb { margin-top: -0.6ex; margin-bottom: -.6ex;}
+ td div.hrcomp { line-height: 0.9; margin-top: -0.8ex; margin-bottom: -1ex;}
+ td div.norm {line-height:normal;}
+ /*
+   option passed -y3
+ */
+ span.roman {font-family: serif; font-style: normal; font-weight: normal;}
+ span.overacc2 {position: relative;  left: .8em; top: -1.2ex;}
+ span.overacc1 {position: relative;  left: .6em; top: -1.2ex;}
+ /*
+   sections with roles, for content only
+ */
+ section[class^="role-"] {
+   padding-left: 10px;
+   padding-right: 5px;
+   margin-top: 8px;
+   margin-bottom: 8px;
+   border: 1px solid #2A4;
+   border-radius: 5px;
+   box-shadow: 0px 1px 1px #BBB;
+ }
+ section[class^="role-"]>h1 {
+   position: relative;
+   margin: 0px;
+   padding-top: 10px;
+   padding-left: 40px;
+ }
+ section[class^="role-"]>h1:before {
+   position: absolute;
+   left: -5px;
+   top: 5px;
+ }
+ section.role-activity>h1:before {
+   content:url('/adm/daxe/images/section_icons/activity.png');
+ }
+ section.role-advice>h1:before {
+   content:url('/adm/daxe/images/section_icons/advice.png');
+ }
+ section.role-bibliography>h1:before {
+   content:url('/adm/daxe/images/section_icons/bibliography.png');
+ }
+ section.role-citation>h1:before {
+   content:url('/adm/daxe/images/section_icons/citation.png');
+ }
+ section.role-conclusion>h1:before {
+   content:url('/adm/daxe/images/section_icons/conclusion.png');
+ }
+ section.role-definition>h1:before {
+   content:url('/adm/daxe/images/section_icons/definition.png');
+ }
+ section.role-demonstration>h1:before {
+   content:url('/adm/daxe/images/section_icons/demonstration.png');
+ }
+ section.role-example>h1:before {
+   content:url('/adm/daxe/images/section_icons/example.png');
+ }
+ section.role-explanation>h1:before {
+   content:url('/adm/daxe/images/section_icons/explanation.png');
+ }
+ section.role-introduction>h1:before {
+   content:url('/adm/daxe/images/section_icons/introduction.png');
+ }
+ section.role-method>h1:before {
+   content:url('/adm/daxe/images/section_icons/method.png');
+ }
+ section.role-more_information>h1:before {
+   content:url('/adm/daxe/images/section_icons/more_information.png');
+ }
+ section.role-objectives>h1:before {
+   content:url('/adm/daxe/images/section_icons/objectives.png');
+ }
+ section.role-prerequisites>h1:before {
+   content:url('/adm/daxe/images/section_icons/prerequisites.png');
+ }
+ section.role-remark>h1:before {
+   content:url('/adm/daxe/images/section_icons/remark.png');
+ }
+ section.role-reminder>h1:before {
+   content:url('/adm/daxe/images/section_icons/reminder.png');
+ }
+ section.role-summary>h1:before {
+   content:url('/adm/daxe/images/section_icons/summary.png');
+ }
+ section.role-syntax>h1:before {
+   content:url('/adm/daxe/images/section_icons/syntax.png');
+ }
+ section.role-warning>h1:before {
+   content:url('/adm/daxe/images/section_icons/warning.png');
+ }
+ END
+ }
+ =pod
+ =item * &headtag()
  Returns a uniform footer for LON-CAPA web pages.
- Inputs:
+ Inputs: $title - optional title for the head
+         $head_extra - optional extra HTML to put inside the <head>
+         $args - optional arguments
+             force_register - if is true call registerurl so the remote is
+                              informed
+             redirect       -> array ref of
+- seconds before redirect occurs
+- url to redirect to
+- whether the side effect should occur
+                            (side effect of setting
+                                $env{'internal.head.redirect'} to the url
+                                redirected too)
+             domain         -> force to color decorate a page for a specific
+                                domain
+             function       -> force usage of a specific rolish color scheme
+             bgcolor        -> override the default page bgcolor
+             no_auto_mt_title
+                            -> prevent &mt()ing the title arg
+ =cut
+ sub headtag {
+     my ($title,$head_extra,$args) = @_;
+     my $function = $args->{'function'} || &get_users_function();
+     my $domain   = $args->{'domain'}   || &determinedomain();
+     my $bgcolor  = $args->{'bgcolor'}  || &designparm($function.'.pgbg',$domain);
+     my $httphost = $args->{'use_absolute'};
+     my $url = join(':',$env{'user.name'},$env{'user.domain'},
+ 		   $Apache::lonnet::perlvar{'lonVersion'},
+ 		   #time(),
+ 		   $env{'environment.color.timestamp'},
+ 		   $function,$domain,$bgcolor);
+     $url = '/adm/css/'.&escape($url).'.css';
+     my $result =
+ 	'<head>'.
+ 	&font_settings($args);
+     my $inhibitprint;
+     if ($args->{'print_suppress'}) {
+         $inhibitprint = &print_suppression();
+     }
+     if (!$args->{'frameset'}) {
+ 	$result .= &Apache::lonhtmlcommon::htmlareaheaders();
+     }
+     if ($args->{'force_register'} && $env{'request.noversionuri'} !~ m{^/res/adm/pages/}) {
+         $result .= Apache::lonxml::display_title();
+     }
+     if (!$args->{'no_nav_bar'}
+ 	&& !$args->{'only_body'}
+ 	&& !$args->{'frameset'}) {
+ 	$result .= &help_menu_js($httphost);
+         $result.=&modal_window();
+         $result.=&togglebox_script();
+         $result.=&wishlist_window();
+         $result.=&LCprogressbarUpdate_script();
+     } else {
+         if ($args->{'add_modal'}) {
+            $result.=&modal_window();
+         }
+         if ($args->{'add_wishlist'}) {
+            $result.=&wishlist_window();
+         }
+         if ($args->{'add_togglebox'}) {
+            $result.=&togglebox_script();
+         }
+         if ($args->{'add_progressbar'}) {
+            $result.=&LCprogressbarUpdate_script();
+         }
+     }
+     if (ref($args->{'redirect'})) {
+ 	my ($time,$url,$inhibit_continue) = @{$args->{'redirect'}};
+ 	$url = &Apache::lonenc::check_encrypt($url);
+ 	if (!$inhibit_continue) {
+ 	    $env{'internal.head.redirect'} = $url;
+ 	}
+ 	$result.=<<ADDMETA
+ <meta http-equiv="pragma" content="no-cache" />
+ <meta http-equiv="Refresh" content="$time; url=$url" />
+ ADDMETA
+     } else {
+         unless (($args->{'frameset'}) || ($args->{'js_ready'}) || ($args->{'only_body'}) || ($args->{'no_nav_bar'})) {
+             my $requrl = $env{'request.uri'};
+             if ($requrl eq '') {
+                 $requrl = $ENV{'REQUEST_URI'};
+                 $requrl =~ s/\?.+$//;
+             }
+             unless (($requrl =~ m{^/adm/(?:switchserver|login|authenticate|logout|groupsort|cleanup|helper|slotrequest|grades)(\?|$)}) ||
+                     (($requrl =~ m{^/res/}) && (($env{'form.submitted'} eq 'scantron') ||
+                      ($env{'form.grade_symb'}) || ($Apache::lonhomework::scantronmode)))) {
+                 my $dom_in_use = $Apache::lonnet::perlvar{'lonDefDomain'};
+                 unless (&Apache::lonnet::allowed('mau',$dom_in_use)) {
+                     my %domdefs = &Apache::lonnet::get_domain_defaults($dom_in_use);
+                     if (ref($domdefs{'offloadnow'}) eq 'HASH') {
+                         my $lonhost = $Apache::lonnet::perlvar{'lonHostID'};
+                         if ($domdefs{'offloadnow'}{$lonhost}) {
+                             my $newserver = &Apache::lonnet::spareserver(30000,undef,1,$dom_in_use);
+                             if (($newserver) && ($newserver ne $lonhost)) {
+                                 my $numsec = 5;
+                                 my $timeout = $numsec * 1000;
+                                 my ($newurl,$locknum,%locks,$msg);
+                                 if ($env{'request.role.adv'}) {
+                                     ($locknum,%locks) = &Apache::lonnet::get_locks();
+                                 }
+                                 my $disable_submit = 0;
+                                 if ($requrl =~ /$LONCAPA::assess_re/) {
+                                     $disable_submit = 1;
+                                 }
+                                 if ($locknum) {
+                                     my @lockinfo = sort(values(%locks));
+                                     $msg = &mt('Once the following tasks are complete: ')."\\n".
+                                            join(", ",sort(values(%locks)))."\\n".
+                                            &mt('your session will be transferred to a different server, after you click "Roles".');
+                                 } else {
+                                     if (($requrl =~ m{^/res/}) && ($env{'form.submitted'} =~ /^part_/)) {
+                                         $msg = &mt('Your LON-CAPA submission has been recorded')."\\n";
+                                     }
+                                     $msg .= &mt('Your current LON-CAPA session will be transferred to a different server in [quant,_1,second].',$numsec);
+                                     $newurl = '/adm/switchserver?otherserver='.$newserver;
+                                     if (($env{'request.role'}) && ($env{'request.role'} ne 'cm')) {
+                                         $newurl .= '&role='.$env{'request.role'};
+                                     }
+                                     if ($env{'request.symb'}) {
+                                         $newurl .= '&symb='.$env{'request.symb'};
+                                     } else {
+                                         $newurl .= '&origurl='.$requrl;
+                                     }
+                                 }
+                                 &js_escape(\$msg);
+                                 $result.=<<OFFLOAD
+ <meta http-equiv="pragma" content="no-cache" />
+ <script type="text/javascript">
+ // <![CDATA[
+ function LC_Offload_Now() {
+     var dest = "$newurl";
+     if (dest != '') {
+         window.location.href="$newurl";
+     }
+ }
+ \$(document).ready(function () {
+     window.alert('$msg');
+     if ($disable_submit) {
+         \$(".LC_hwk_submit").prop("disabled", true);
+         \$( ".LC_textline" ).prop( "readonly", "readonly");
+     }
+     setTimeout('LC_Offload_Now()', $timeout);
+ });
+ // ]]>
+ </script>
+ OFFLOAD
+                             }
+                         }
+                     }
+                 }
+             }
+         }
+     }
+     if (!defined($title)) {
+ 	$title = 'The LearningOnline Network with CAPA';
+     }
+     if (!$args->{'no_auto_mt_title'}) { $title = &mt($title); }
+     $result .= '<title> LON-CAPA '.$title.'</title>'
+ 	.'<link rel="stylesheet" type="text/css" href="'.$url.'"';
+     if (!$args->{'frameset'}) {
+         $result .= ' /';
+     }
+     $result .= '>'
+         .$inhibitprint
+ 	.$head_extra;
+     my $clientmobile;
+     if (($env{'user.name'} eq '') && ($env{'user.domain'} eq '')) {
+         (undef,undef,undef,undef,undef,undef,$clientmobile) = &decode_user_agent();
+     } else {
+         $clientmobile = $env{'browser.mobile'};
+     }
+     if ($clientmobile) {
+         $result .= '
+ <meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=0, minimum-scale=1.0, maximum-scale=1.0">
+ <meta name="apple-mobile-web-app-capable" content="yes" />';
+     }
+     return $result.'</head>';
+ }
+ =pod
+ =item * &font_settings()
+ Returns neccessary <meta> to set the proper encoding
+ Inputs: optional reference to HASH -- $args passed to &headtag()
+ =cut
+ sub font_settings {
+     my ($args) = @_;
+     my $headerstring='';
+     if ((!$env{'browser.mathml'} && $env{'browser.unicode'}) ||
+         ((ref($args) eq 'HASH') && ($args->{'browser.unicode'}))) {
+         $headerstring.=
+             '<meta http-equiv="Content-Type" content="text/html; charset=utf-8"';
+         if (!$args->{'frameset'}) {
+ 	    $headerstring.= ' /';
+         }
+ 	$headerstring .= '>'."\n";
+     }
+     return $headerstring;
+ }
+ =pod
+ =item * &print_suppression()
+ In course context returns css which causes the body to be blank when media="print",
+ if printout generation is unavailable for the current resource.
+ This could be because:
+ (a) printstartdate is in the future
+ (b) printenddate is in the past
+ (c) there is an active exam block with "printout"
+ functionality blocked
+ Users with pav, pfo or evb privileges are exempt.
+ Inputs: none
+ =cut
+ sub print_suppression {
+     my $noprint;
+     if ($env{'request.course.id'}) {
+         my $scope = $env{'request.course.id'};
+         if ((&Apache::lonnet::allowed('pav',$scope)) ||
+             (&Apache::lonnet::allowed('pfo',$scope))) {
+             return;
+         }
+         if ($env{'request.course.sec'} ne '') {
+             $scope .= "/$env{'request.course.sec'}";
+             if ((&Apache::lonnet::allowed('pav',$scope)) ||
+                 (&Apache::lonnet::allowed('pfo',$scope))) {
+                 return;
+             }
+         }
+         my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+         my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+         my $blocked = &blocking_status('printout',$cnum,$cdom,undef,1);
+         if ($blocked) {
+             my $checkrole = "cm./$cdom/$cnum";
+             if ($env{'request.course.sec'} ne '') {
+                 $checkrole .= "/$env{'request.course.sec'}";
+             }
+             unless ((&Apache::lonnet::allowed('evb',undef,undef,$checkrole)) &&
+                     ($env{'request.role'} !~ m{^st\./$cdom/$cnum})) {
+                 $noprint = 1;
+             }
+         }
+         unless ($noprint) {
+             my $symb = &Apache::lonnet::symbread();
+             if ($symb ne '') {
+                 my $navmap = Apache::lonnavmaps::navmap->new();
+                 if (ref($navmap)) {
+                     my $res = $navmap->getBySymb($symb);
+                     if (ref($res)) {
+                         if (!$res->resprintable()) {
+                             $noprint = 1;
+                         }
+                     }
+                 }
+             }
+         }
+         if ($noprint) {
+             return <<"ENDSTYLE";
+ <style type="text/css" media="print">
+     body { display:none }
+ </style>
+ ENDSTYLE
+         }
+     }
+     return;
+ }
+ =pod
+ =item * &xml_begin()
+ Returns the needed doctype and <html>
+ Inputs: none
+ =cut
+ sub xml_begin {
+     my ($is_frameset) = @_;
+     my $output='';
+     if ($env{'browser.mathml'}) {
+ 	$output='<?xml version="1.0"?>'
+             #.'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'."\n"
+ #            .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
+ #	    .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" [<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">] >'
+ 	    .'<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0 plus SVG 1.1//EN" "http://www.w3.org/2002/04/xhtml-math-svg/xhtml-math-svg.dtd">'
+             .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
+ 	    .'xmlns="http://www.w3.org/1999/xhtml">';
+     } elsif ($is_frameset) {
+         $output='<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN" "http://www.w3.org/TR/html4/frameset.dtd">'."\n".
+                 '<html>'."\n";
+     } else {
+ 	$output='<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">'."\n".
+                 '<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">'."\n";
+     }
+     return $output;
+ }
+ =pod
+ =item * &start_page()
+ Returns a complete <html> .. <body> section for LON-CAPA web pages.
+ Inputs:
  =over 4
+ $title - optional title for the page
+ $head_extra - optional extra HTML to incude inside the <head>
+ $args - additional optional args supported are:
+ =over 8
+              only_body      -> is true will set &bodytag() onlybodytag
+                                     arg on
+              no_nav_bar     -> is true will set &bodytag() no_nav_bar arg on
+              add_entries    -> additional attributes to add to the  <body>
+              domain         -> force to color decorate a page for a
+                                     specific domain
+              function       -> force usage of a specific rolish color
+                                     scheme
+              redirect       -> see &headtag()
+              bgcolor        -> override the default page bg color
+              js_ready       -> return a string ready for being used in
+                                     a javascript writeln
+              html_encode    -> return a string ready for being used in
+                                     a html attribute
+              force_register -> if is true will turn on the &bodytag()
+                                     $forcereg arg
+              frameset       -> if true will start with a <frameset>
+                                     rather than <body>
+              skip_phases    -> hash ref of
+                                     head -> skip the <html><head> generation
+                                     body -> skip all <body> generation
+              no_auto_mt_title -> prevent &mt()ing the title arg
+              bread_crumbs ->             Array containing breadcrumbs
+              bread_crumbs_component ->  if exists show it as headline else show only the breadcrumbs
+              group          -> includes the current group, if page is for a
+                                specific group
  =back
- Returns: A uniform footer for LON-CAPA web pages.
+ =back
  =cut
- sub endbodytag {
+ sub start_page {
-     my $endbodytag='</body>';
+     my ($title,$head_extra,$args) = @_;
-     $endbodytag=&Apache::lontexconvert::jsMath_process()."\n".$endbodytag;
+     #&Apache::lonnet::logthis("start_page ".join(':',caller(0)));
-     return $endbodytag;
+     $env{'internal.start_page'}++;
+     my ($result,@advtools);
+     if (! exists($args->{'skip_phases'}{'head'}) ) {
+         $result .= &xml_begin($args->{'frameset'}) . &headtag($title, $head_extra, $args);
+     }
+     if (! exists($args->{'skip_phases'}{'body'}) ) {
+ 	if ($args->{'frameset'}) {
+ 	    my $attr_string = &make_attr_string($args->{'force_register'},
+ 						$args->{'add_entries'});
+ 	    $result .= "\n<frameset $attr_string>\n";
+         } else {
+             $result .=
+                 &bodytag($title,
+                          $args->{'function'},       $args->{'add_entries'},
+                          $args->{'only_body'},      $args->{'domain'},
+                          $args->{'force_register'}, $args->{'no_nav_bar'},
+                          $args->{'bgcolor'},        $args,
+                          \@advtools);
+         }
+     }
+     if ($args->{'js_ready'}) {
+ 		$result = &js_ready($result);
+     }
+     if ($args->{'html_encode'}) {
+ 		$result = &html_encode($result);
+     }
+     # Preparation for new and consistent functionlist at top of screen
+     # if ($args->{'functionlist'}) {
+     #            $result .= &build_functionlist();
+     #}
+     # Don't add anything more if only_body wanted or in const space
+     return $result if    $args->{'only_body'}
+                       || $env{'request.state'} eq 'construct';
+     #Breadcrumbs
+     if (exists($args->{'bread_crumbs'}) or exists($args->{'bread_crumbs_component'})) {
+ 		&Apache::lonhtmlcommon::clear_breadcrumbs();
+ 		#if any br links exists, add them to the breadcrumbs
+ 		if (exists($args->{'bread_crumbs'}) and ref($args->{'bread_crumbs'}) eq 'ARRAY') {
+ 			foreach my $crumb (@{$args->{'bread_crumbs'}}){
+ 				&Apache::lonhtmlcommon::add_breadcrumb($crumb);
+ 			}
+ 		}
+                 # if @advtools array contains items add then to the breadcrumbs
+                 if (@advtools > 0) {
+                     &Apache::lonmenu::advtools_crumbs(@advtools);
+                 }
+ 		#if bread_crumbs_component exists show it as headline else show only the breadcrumbs
+ 		if(exists($args->{'bread_crumbs_component'})){
+ 			$result .= &Apache::lonhtmlcommon::breadcrumbs($args->{'bread_crumbs_component'});
+ 		} elsif ($args->{'crstype'} eq 'Placement') {
+ 			$result .= &Apache::lonhtmlcommon::breadcrumbs('','','','','','','','','',
+                                                                        $args->{'crstype'});
+                 } else {
+ 			$result .= &Apache::lonhtmlcommon::breadcrumbs();
+ 		}
+     }
+     return $result;
+ }
+ sub end_page {
+     my ($args) = @_;
+     $env{'internal.end_page'}++;
+     my $result;
+     if ($args->{'discussion'}) {
+ 	my ($target,$parser);
+ 	if (ref($args->{'discussion'})) {
+ 	    ($target,$parser) =($args->{'discussion'}{'target'},
+ 				$args->{'discussion'}{'parser'});
+ 	}
+ 	$result .= &Apache::lonxml::xmlend($target,$parser);
+     }
+     if ($args->{'frameset'}) {
+ 	$result .= '</frameset>';
+     } else {
+ 	$result .= &endbodytag($args);
+     }
+     unless ($args->{'notbody'}) {
+         $result .= "\n</html>";
+     }
+     if ($args->{'js_ready'}) {
+ 	$result = &js_ready($result);
+     }
+     if ($args->{'html_encode'}) {
+ 	$result = &html_encode($result);
+     }
+     return $result;
+ }
+ sub wishlist_window {
+     return(<<'ENDWISHLIST');
+ <script type="text/javascript">
+ // <![CDATA[
+ // <!-- BEGIN LON-CAPA Internal
+ function set_wishlistlink(title, path) {
+     if (!title) {
+         title = document.title;
+         title = title.replace(/^LON-CAPA /,'');
+     }
+     title = encodeURIComponent(title);
+     title = title.replace("'","\\\'");
+     if (!path) {
+         path = location.pathname;
+     }
+     path = encodeURIComponent(path);
+     path = path.replace("'","\\\'");
+     Win = window.open('/adm/wishlist?mode=newLink&setTitle='+title+'&setPath='+path,
+                       'wishlistNewLink','width=560,height=350,scrollbars=0');
+ }
+ // END LON-CAPA Internal -->
+ // ]]>
+ </script>
+ ENDWISHLIST
+ }
+ sub modal_window {
+     return(<<'ENDMODAL');
+ <script type="text/javascript">
+ // <![CDATA[
+ // <!-- BEGIN LON-CAPA Internal
+ var modalWindow = {
+ 	parent:"body",
+ 	windowId:null,
+ 	content:null,
+ 	width:null,
+ 	height:null,
+ 	close:function()
+ 	{
+ 	        $(".LCmodal-window").remove();
+ 	        $(".LCmodal-overlay").remove();
+ 	},
+ 	open:function()
+ 	{
+ 		var modal = "";
+ 		modal += "<div class=\"LCmodal-overlay\"></div>";
+ 		modal += "<div id=\"" + this.windowId + "\" class=\"LCmodal-window\" style=\"width:" + this.width + "px; height:" + this.height + "px; margin-top:-" + (this.height / 2) + "px; margin-left:-" + (this.width / 2) + "px;\">";
+ 		modal += this.content;
+ 		modal += "</div>";
+ 		$(this.parent).append(modal);
+ 		$(".LCmodal-window").append("<a class=\"LCclose-window\"></a>");
+ 		$(".LCclose-window").click(function(){modalWindow.close();});
+ 		$(".LCmodal-overlay").click(function(){modalWindow.close();});
+ 	}
+ };
+ 	var openMyModal = function(source,width,height,scrolling,transparency,style)
+ 	{
+                 source = source.replace("'","&#39;");
+ 		modalWindow.windowId = "myModal";
+ 		modalWindow.width = width;
+ 		modalWindow.height = height;
+ 		modalWindow.content = "<iframe width='"+width+"' height='"+height+"' frameborder='0' scrolling='"+scrolling+"' allowtransparency='"+transparency+"' src='" + source + "' style='"+style+"'></iframe>";
+ 		modalWindow.open();
+ 	};
+ // END LON-CAPA Internal -->
+ // ]]>
+ </script>
+ ENDMODAL
+ }
+ sub modal_link {
+     my ($link,$linktext,$width,$height,$target,$scrolling,$title,$transparency,$style)=@_;
+     unless ($width) { $width=480; }
+     unless ($height) { $height=400; }
+     unless ($scrolling) { $scrolling='yes'; }
+     unless ($transparency) { $transparency='true'; }
+     my $target_attr;
+     if (defined($target)) {
+         $target_attr = 'target="'.$target.'"';
+     }
+     return <<"ENDLINK";
+ <a href="$link" $target_attr title="$title" onclick="javascript:openMyModal('$link',$width,$height,'$scrolling','$transparency','$style'); return false;">
+            $linktext</a>
+ ENDLINK
+ }
+ sub modal_adhoc_script {
+     my ($funcname,$width,$height,$content)=@_;
+     return (<<ENDADHOC);
+ <script type="text/javascript">
+ // <![CDATA[
+         var $funcname = function()
+         {
+                 modalWindow.windowId = "myModal";
+                 modalWindow.width = $width;
+                 modalWindow.height = $height;
+                 modalWindow.content = '$content';
+                 modalWindow.open();
+         };
+ // ]]>
+ </script>
+ ENDADHOC
+ }
+ sub modal_adhoc_inner {
+     my ($funcname,$width,$height,$content)=@_;
+     my $innerwidth=$width-20;
+     $content=&js_ready(
+                  &start_page('Dialog',undef,{'only_body'=>1,'bgcolor'=>'#FFFFFF'}).
+                  &start_scrollbox($width.'px',$innerwidth.'px',$height.'px','myModal','#FFFFFF',undef,1).
+                  $content.
+                  &end_scrollbox().
+                  &end_page()
+              );
+     return &modal_adhoc_script($funcname,$width,$height,$content);
+ }
+ sub modal_adhoc_window {
+     my ($funcname,$width,$height,$content,$linktext)=@_;
+     return &modal_adhoc_inner($funcname,$width,$height,$content).
+            "<a href=\"javascript:$funcname();void(0);\">".$linktext."</a>";
+ }
+ sub modal_adhoc_launch {
+     my ($funcname,$width,$height,$content)=@_;
+     return &modal_adhoc_inner($funcname,$width,$height,$content).(<<ENDLAUNCH);
+ <script type="text/javascript">
+ // <![CDATA[
+ $funcname();
+ // ]]>
+ </script>
+ ENDLAUNCH
+ }
+ sub modal_adhoc_close {
+     return (<<ENDCLOSE);
+ <script type="text/javascript">
+ // <![CDATA[
+ modalWindow.close();
+ // ]]>
+ </script>
+ ENDCLOSE
+ }
+ sub togglebox_script {
+    return(<<ENDTOGGLE);
+ <script type="text/javascript">
+ // <![CDATA[
+ function LCtoggleDisplay(id,hidetext,showtext) {
+    link = document.getElementById(id + "link").childNodes[0];
+    with (document.getElementById(id).style) {
+       if (display == "none" ) {
+           display = "inline";
+           link.nodeValue = hidetext;
+         } else {
+           display = "none";
+           link.nodeValue = showtext;
+        }
+    }
+ }
+ // ]]>
+ </script>
+ ENDTOGGLE
+ }
+ sub start_togglebox {
+     my ($id,$heading,$headerbg,$hidetext,$showtext)=@_;
+     unless ($heading) { $heading=''; } else { $heading.=' '; }
+     unless ($showtext) { $showtext=&mt('show'); }
+     unless ($hidetext) { $hidetext=&mt('hide'); }
+     unless ($headerbg) { $headerbg='#FFFFFF'; }
+     return &start_data_table().
+            &start_data_table_header_row().
+            '<td bgcolor="'.$headerbg.'">'.$heading.
+            '[<a id="'.$id.'link" href="javascript:LCtoggleDisplay(\''.$id.'\',\''.$hidetext.'\',\''.
+            $showtext.'\')">'.$showtext.'</a>]</td>'.
+            &end_data_table_header_row().
+            '<tr id="'.$id.'" style="display:none""><td>';
+ }
+ sub end_togglebox {
+     return '</td></tr>'.&end_data_table();
+ }
+ sub LCprogressbar_script {
+    my ($id)=@_;
+    return(<<ENDPROGRESS);
+ <script type="text/javascript">
+ // <![CDATA[
+ \$('#progressbar$id').progressbar({
+   value: 0,
+   change: function(event, ui) {
+     var newVal = \$(this).progressbar('option', 'value');
+     \$('.pblabel', this).text(LCprogressTxt);
+   }
+ });
+ // ]]>
+ </script>
+ ENDPROGRESS
+ }
+ sub LCprogressbarUpdate_script {
+    return(<<ENDPROGRESSUPDATE);
+ <style type="text/css">
+ .ui-progressbar { position:relative; }
+ .pblabel { position: absolute; width: 100%; text-align: center; line-height: 1.9em; }
+ </style>
+ <script type="text/javascript">
+ // <![CDATA[
+ var LCprogressTxt='---';
+ function LCupdateProgress(percent,progresstext,id) {
+    LCprogressTxt=progresstext;
+    \$('#progressbar'+id).progressbar('value',percent);
+ }
+ // ]]>
+ </script>
+ ENDPROGRESSUPDATE
+ }
+ my $LClastpercent;
+ my $LCidcnt;
+ my $LCcurrentid;
+ sub LCprogressbar {
+     my ($r)=(@_);
+     $LClastpercent=0;
+     $LCidcnt++;
+     $LCcurrentid=$$.'_'.$LCidcnt;
+     my $starting=&mt('Starting');
+     my $content=(<<ENDPROGBAR);
+   <div id="progressbar$LCcurrentid">
+     <span class="pblabel">$starting</span>
+   </div>
+ ENDPROGBAR
+     &r_print($r,$content.&LCprogressbar_script($LCcurrentid));
+ }
+ sub LCprogressbarUpdate {
+     my ($r,$val,$text)=@_;
+     unless ($val) {
+        if ($LClastpercent) {
+            $val=$LClastpercent;
+        } else {
+            $val=0;
+        }
+     }
+     if ($val<0) { $val=0; }
+     if ($val>100) { $val=0; }
+     $LClastpercent=$val;
+     unless ($text) { $text=$val.'%'; }
+     $text=&js_ready($text);
+     &r_print($r,<<ENDUPDATE);
+ <script type="text/javascript">
+ // <![CDATA[
+ LCupdateProgress($val,'$text','$LCcurrentid');
+ // ]]>
+ </script>
+ ENDUPDATE
+ }
+ sub LCprogressbarClose {
+     my ($r)=@_;
+     $LClastpercent=0;
+     &r_print($r,<<ENDCLOSE);
+ <script type="text/javascript">
+ // <![CDATA[
+ \$("#progressbar$LCcurrentid").hide('slow');
+ // ]]>
+ </script>
+ ENDCLOSE
+ }
+ sub r_print {
+     my ($r,$to_print)=@_;
+     if ($r) {
+       $r->print($to_print);
+       $r->rflush();
+     } else {
+       print($to_print);
+     }
+ }
+ sub html_encode {
+     my ($result) = @_;
+     $result = &HTML::Entities::encode($result,'<>&"');
+     return $result;
+ }
+ sub js_ready {
+     my ($result) = @_;
+     $result =~ s/[\n\r]/ /xmsg;
+     $result =~ s/\\/\\\\/xmsg;
+     $result =~ s/'/\\'/xmsg;
+     $result =~ s{</}{<\\/}xmsg;
+     return $result;
+ }
+ sub validate_page {
+     if (  exists($env{'internal.start_page'})
+ 	  &&     $env{'internal.start_page'} > 1) {
+ 	&Apache::lonnet::logthis('start_page called multiple times '.
+ 				 $env{'internal.start_page'}.' '.
+ 				 $ENV{'request.filename'});
+     }
+     if (  exists($env{'internal.end_page'})
+ 	  &&     $env{'internal.end_page'} > 1) {
+ 	&Apache::lonnet::logthis('end_page called multiple times '.
+ 				 $env{'internal.end_page'}.' '.
+ 				 $env{'request.filename'});
+     }
+     if (     exists($env{'internal.start_page'})
+ 	&& ! exists($env{'internal.end_page'})) {
+ 	&Apache::lonnet::logthis('start_page called without end_page '.
+ 				 $env{'request.filename'});
+     }
+     if (   ! exists($env{'internal.start_page'})
+ 	&&   exists($env{'internal.end_page'})) {
+ 	&Apache::lonnet::logthis('end_page called without start_page'.
+ 				 $env{'request.filename'});
+     }
+ }
+ sub start_scrollbox {
+     my ($outerwidth,$width,$height,$id,$bgcolor,$cursor,$needjsready) = @_;
+     unless ($outerwidth) { $outerwidth='520px'; }
+     unless ($width) { $width='500px'; }
+     unless ($height) { $height='200px'; }
+     my ($table_id,$div_id,$tdcol);
+     if ($id ne '') {
+         $table_id = ' id="table_'.$id.'"';
+         $div_id = ' id="div_'.$id.'"';
+     }
+     if ($bgcolor ne '') {
+         $tdcol = "background-color: $bgcolor;";
+     }
+     my $nicescroll_js;
+     if ($env{'browser.mobile'}) {
+         $nicescroll_js = &nicescroll_javascript('div_'.$id,$cursor,$needjsready);
+     }
+     return <<"END";
+ $nicescroll_js
+ <table style="width: $outerwidth; border: 1px solid none;"$table_id><tr><td style="width: $width;$tdcol">
+ <div style="overflow:auto; width:$width; height:$height;"$div_id>
+ END
+ }
+ sub end_scrollbox {
+     return '</div></td></tr></table>';
+ }
+ sub nicescroll_javascript {
+     my ($id,$cursor,$needjsready,$framecheck,$location) = @_;
+     my %options;
+     if (ref($cursor) eq 'HASH') {
+         %options = %{$cursor};
+     }
+     unless ($options{'railalign'} =~ /^left|right$/) {
+         $options{'railalign'} = 'left';
+     }
+     unless ($options{'cursorcolor'} =~ /^\#\w+$/) {
+         my $function  = &get_users_function();
+         $options{'cursorcolor'} = &designparm($function.'.sidebg',$env{'request.role.domain'});
+         unless ($options{'cursorcolor'} =~ /^\#\w+$/) {
+             $options{'cursorcolor'} = '#00F';
+         }
+     }
+     if ($options{'cursoropacity'} =~ /^[\d.]+$/) {
+         unless ($options{'cursoropacity'} >= 0.0 && $options{'cursoropacity'} <=1.0) {
+             $options{'cursoropacity'}='1.0';
+         }
+     } else {
+         $options{'cursoropacity'}='1.0';
+     }
+     if ($options{'cursorfixedheight'} eq 'none') {
+         delete($options{'cursorfixedheight'});
+     } else {
+         unless ($options{'cursorfixedheight'} =~ /^\d+$/) { $options{'cursorfixedheight'}='50'; }
+     }
+     unless ($options{'railoffset'} =~ /^{[\w\:\d\-,]+}$/) {
+         delete($options{'railoffset'});
+     }
+     my @niceoptions;
+     while (my($key,$value) = each(%options)) {
+         if ($value =~ /^\{.+\}$/) {
+             push(@niceoptions,$key.':'.$value);
+         } else {
+             push(@niceoptions,$key.':"'.$value.'"');
+         }
+     }
+     my $nicescroll_js = '
+ $(document).ready(
+       function() {
+           $("#'.$id.'").niceScroll({'.join(',',@niceoptions).'});
+       }
+ );
+ ';
+     if ($framecheck) {
+         $nicescroll_js .= '
+ function expand_div(caller) {
+     if (top === self) {
+         document.getElementById("'.$id.'").style.width = "auto";
+         document.getElementById("'.$id.'").style.height = "auto";
+     } else {
+         try {
+             if (parent.frames) {
+                 if (parent.frames.length > 1) {
+                     var framesrc = parent.frames[1].location.href;
+                     var currsrc = framesrc.replace(/\#.*$/,"");
+                     if ((caller == "search") || (currsrc == "'.$location.'")) {
+                         document.getElementById("'.$id.'").style.width = "auto";
+                         document.getElementById("'.$id.'").style.height = "auto";
+                     }
+                 }
+             }
+         } catch (e) {
+             return;
+         }
+     }
+     return;
+ }
+ ';
+     }
+     if ($needjsready) {
+         $nicescroll_js = '
+ <script type="text/javascript">'."\n".$nicescroll_js."\n</script>\n";
+     } else {
+         $nicescroll_js = &Apache::lonhtmlcommon::scripttag($nicescroll_js);
+     }
+     return $nicescroll_js;
+ }
+ sub simple_error_page {
+     my ($r,$title,$msg,$args) = @_;
+     if (ref($args) eq 'HASH') {
+         if (!$args->{'no_auto_mt_msg'}) { $msg = &mt($msg); }
+     } else {
+         $msg = &mt($msg);
+     }
+     my $page =
+ 	&Apache::loncommon::start_page($title).
+ 	'<p class="LC_error">'.$msg.'</p>'.
+ 	&Apache::loncommon::end_page();
+     if (ref($r)) {
+ 	$r->print($page);
+ 	return;
+     }
+     return $page;
+ }
+ {
+     my @row_count;
+     sub start_data_table_count {
+         unshift(@row_count, 0);
+         return;
+     }
+     sub end_data_table_count {
+         shift(@row_count);
+         return;
+     }
+     sub start_data_table {
+ 	my ($add_class,$id) = @_;
+ 	my $css_class = (join(' ','LC_data_table',$add_class));
+         my $table_id;
+         if (defined($id)) {
+             $table_id = ' id="'.$id.'"';
+         }
+ 	&start_data_table_count();
+ 	return '<table class="'.$css_class.'"'.$table_id.'>'."\n";
+     }
+     sub end_data_table {
+ 	&end_data_table_count();
+ 	return '</table>'."\n";;
+     }
+     sub start_data_table_row {
+ 	my ($add_class, $id) = @_;
+ 	$row_count[0]++;
+ 	my $css_class = ($row_count[0] % 2)?'LC_odd_row':'LC_even_row';
+ 	$css_class = (join(' ',$css_class,$add_class)) unless ($add_class eq '');
+         $id = (' id="'.$id.'"') unless ($id eq '');
+         return  '<tr class="'.$css_class.'"'.$id.'>'."\n";
+     }
+     sub continue_data_table_row {
+ 	my ($add_class, $id) = @_;
+ 	my $css_class = ($row_count[0] % 2)?'LC_odd_row':'LC_even_row';
+ 	$css_class = (join(' ',$css_class,$add_class)) unless ($add_class eq '');
+         $id = (' id="'.$id.'"') unless ($id eq '');
+         return  '<tr class="'.$css_class.'"'.$id.'>'."\n";
+     }
+     sub end_data_table_row {
+ 	return '</tr>'."\n";;
+     }
+     sub start_data_table_empty_row {
+ #	$row_count[0]++;
+ 	return  '<tr class="LC_empty_row" >'."\n";;
+     }
+     sub end_data_table_empty_row {
+ 	return '</tr>'."\n";;
+     }
+     sub start_data_table_header_row {
+ 	return  '<tr class="LC_header_row">'."\n";;
+     }
+     sub end_data_table_header_row {
+ 	return '</tr>'."\n";;
+     }
+     sub data_table_caption {
+         my $caption = shift;
+         return "<caption class=\"LC_caption\">$caption</caption>";
+     }
+ }
+ =pod
+ =item * &inhibit_menu_check($arg)
+ Checks for a inhibitmenu state and generates output to preserve it
+ Inputs:         $arg - can be any of
+                      - undef - in which case the return value is a string
+                                to add  into arguments list of a uri
+                      - 'input' - in which case the return value is a HTML
+                                  <form> <input> field of type hidden to
+                                  preserve the value
+                      - a url - in which case the return value is the url with
+                                the neccesary cgi args added to preserve the
+                                inhibitmenu state
+                      - a ref to a url - no return value, but the string is
+                                         updated to include the neccessary cgi
+                                         args to preserve the inhibitmenu state
+ =cut
+ sub inhibit_menu_check {
+     my ($arg) = @_;
+     &get_unprocessed_cgi($ENV{'QUERY_STRING'}, ['inhibitmenu']);
+     if ($arg eq 'input') {
+ 	if ($env{'form.inhibitmenu'}) {
+ 	    return '<input type="hidden" name="inhibitmenu" value="'.$env{'form.inhibitmenu'}.'" />';
+ 	} else {
+ 	    return
+ 	}
+     }
+     if ($env{'form.inhibitmenu'}) {
+ 	if (ref($arg)) {
+ 	    $$arg .= '?inhibitmenu='.$env{'form.inhibitmenu'};
+ 	} elsif ($arg eq '') {
+ 	    $arg .= 'inhibitmenu='.$env{'form.inhibitmenu'};
+ 	} else {
+ 	    $arg .= '?inhibitmenu='.$env{'form.inhibitmenu'};
+ 	}
+     }
+     if (!ref($arg)) {
+ 	return $arg;
+     }
  }
  ###############################################
  =pod
- =item get_users_function
+ =back
+ =head1 User Information Routines
+ =over 4
+ =item * &get_users_function()
  Used by &bodytag to determine the current users primary role.
  Returns either 'student','coordinator','admin', or 'author'.
- Line 2949  Returns either 'student','coordinator','
+ Line 9201  Returns either 'student','coordinator','
  ###############################################
  sub get_users_function {
-     my $function = 'student';
+     my $function = 'norole';
-     if ($env{'request.role'}=~/^(cc|in|ta|ep)/) {
+     if ($env{'request.role'}=~/^(st)/) {
+         $function='student';
+     }
+     if ($env{'request.role'}=~/^(cc|co|in|ta|ep)/) {
          $function='coordinator';
      }
      if ($env{'request.role'}=~/^(su|dc|ad|li)/) {
          $function='admin';
      }
-     if (($env{'request.role'}=~/^(au|ca)/) ||
+     if (($env{'request.role'}=~/^(au|ca|aa)/) ||
-         ($ENV{'REQUEST_URI'}=~/^(\/priv|\~)/)) {
+         ($ENV{'REQUEST_URI'}=~ m{/^(/priv)})) {
          $function='author';
      }
      return $function;
- Line 2967  sub get_users_function {
+ Line 9222  sub get_users_function {
  =pod
- =item check_user_status
+ =item * &show_course()
+ Used by lonmenu.pm and lonroles.pm to determine whether to use the word
+ 'Courses' or 'Roles' in inline navigation and on screen displaying user's roles.
+ Inputs:
+ None
+ Outputs:
+ Scalar: 1 if 'Course' to be used, 0 otherwise.
+ =cut
+ ###############################################
+ sub show_course {
+     my $course = !$env{'user.adv'};
+     if (!$env{'user.adv'}) {
+         foreach my $env (keys(%env)) {
+             next if ($env !~ m/^user\.priv\./);
+             if ($env !~ m/^user\.priv\.(?:st|cm)/) {
+                 $course = 0;
+                 last;
+             }
+         }
+     }
+     return $course;
+ }
+ ###############################################
+ =pod
+ =item * &check_user_status()
  Determines current status of supplied role for a
  specific user. Roles can be active, previous or future.
  Inputs:
  user's domain, user's username, course's domain,
- course's number, optional section/group.
+ course's number, optional section ID.
  Outputs:
  role status: active, previous or future.
- Line 2982  role status: active, previous or future.
+ Line 9269  role status: active, previous or future.
  =cut
  sub check_user_status {
-     my ($udom,$uname,$cdom,$crs,$role,$secgrp) = @_;
+     my ($udom,$uname,$cdom,$crs,$role,$sec) = @_;
      my %userinfo = &Apache::lonnet::dump('roles',$udom,$uname);
-     my @uroles = keys %userinfo;
+     my @uroles = keys(%userinfo);
      my $srchstr;
      my $active_chk = 'none';
+     my $now = time;
      if (@uroles > 0) {
-         if (($role eq 'cc') || ($secgrp eq '') || (!defined($secgrp))) {
+         if (($role eq 'cc') || ($role eq 'co') || ($sec eq '') || (!defined($sec))) {
              $srchstr = '/'.$cdom.'/'.$crs.'_'.$role;
          } else {
-             $srchstr = '/'.$cdom.'/'.$crs.'/'.$secgrp.'_'.$role;         }
+             $srchstr = '/'.$cdom.'/'.$crs.'/'.$sec.'_'.$role;
-         if (grep/^$srchstr$/,@uroles) {
+         }
+         if (grep/^\Q$srchstr\E$/,@uroles) {
              my $role_end = 0;
              my $role_start = 0;
              $active_chk = 'active';
-             if ($userinfo{$srchstr} =~ m/^($role)_(\d+)/) {
+             if ($userinfo{$srchstr} =~ m/^\Q$role\E_(\d+)/) {
-                 $role_end = $2;
+                 $role_end = $1;
-                 if ($userinfo{$srchstr} =~ m/^($role)_($role_end)_(\d+)$/) {
+                 if ($userinfo{$srchstr} =~ m/^\Q$role\E_\Q$role_end\E_(\d+)$/) {
-                     $role_start = $3;
+                     $role_start = $1;
                  }
              }
              if ($role_start > 0) {
-                 if (time < $role_start) {
+                 if ($now < $role_start) {
                      $active_chk = 'future';
                  }
              }
              if ($role_end > 0) {
-                 if (time > $role_end) {
+                 if ($now > $role_end) {
                      $active_chk = 'previous';
                  }
              }
- Line 3021  sub check_user_status {
+ Line 9310  sub check_user_status {
  =pod
- =item get_sections
+ =item * &get_sections()
  Determines all the sections for a course including
  sections with students and sections containing other roles.
- Incoming parameters: domain, course number, reference to
+ Incoming parameters:
- section hash (keys to be section/group IDs), reference to
- array containing roles for which sections should be gathered
+. domain
- (optional). If the fourth argument is undefined, sections
+. course number
- are gathered for any role.
+. reference to array containing roles for which sections should
+ be gathered (optional).
+. reference to array containing status types for which sections
+ should be gathered (optional).
+ If the third argument is undefined, sections are gathered for any role.
+ If the fourth argument is undefined, sections are gathered for any status.
+ Permissible values are 'active' or 'future' or 'previous'.
- Returns number of sections.
+ Returns section hash (keys are section IDs, values are
+ number of users in each section), subject to the
+ optional roles filter, optional status filter
  =cut
  ###############################################
  sub get_sections {
-     my ($cdom,$cnum,$sectioncount,$possible_roles) = @_;
+     my ($cdom,$cnum,$possible_roles,$possible_status) = @_;
-     if (!($cdom && $cnum)) { return 0; }
+     if (!defined($cdom) || !defined($cnum)) {
-     my $numsections = 0;
+         my $cid =  $env{'request.course.id'};
+ 	return if (!defined($cid));
+         $cdom = $env{'course.'.$cid.'.domain'};
+         $cnum = $env{'course.'.$cid.'.num'};
+     }
-     if (!defined($possible_roles) || (grep/^st$/,@$possible_roles)) {
+     my %sectioncount;
+     my $now = time;
+     my $check_students = 1;
+     my $only_students = 0;
+     if (ref($possible_roles) eq 'ARRAY') {
+         if (grep(/^st$/,@{$possible_roles})) {
+             if (@{$possible_roles} == 1) {
+                 $only_students = 1;
+             }
+         } else {
+             $check_students = 0;
+         }
+     }
+     if ($check_students) {
  	my ($classlist) = &Apache::loncoursedata::get_classlist($cdom,$cnum);
  	my $sec_index = &Apache::loncoursedata::CL_SECTION();
  	my $status_index = &Apache::loncoursedata::CL_STATUS();
- 	while (my ($student,$data) = each %$classlist) {
+         my $start_index = &Apache::loncoursedata::CL_START();
- 	    my ($section,$status) = ($data->[$sec_index],
+         my $end_index = &Apache::loncoursedata::CL_END();
- 				     $data->[$status_index]);
+         my $status;
- 	    unless ($section eq '-1' || $section =~ /^\s*$/) {
+ 	while (my ($student,$data) = each(%$classlist)) {
- 		if (!defined($$sectioncount{$section})) { $numsections++; }
+ 	    my ($section,$stu_status,$start,$end) = ($data->[$sec_index],
- 		$$sectioncount{$section}++;
+ 				                     $data->[$status_index],
+                                                      $data->[$start_index],
+                                                      $data->[$end_index]);
+             if ($stu_status eq 'Active') {
+                 $status = 'active';
+             } elsif ($end < $now) {
+                 $status = 'previous';
+             } elsif ($start > $now) {
+                 $status = 'future';
+             }
+ 	    if ($section ne '-1' && $section !~ /^\s*$/) {
+                 if ((!defined($possible_status)) || (($status ne '') &&
+                     (grep/^\Q$status\E$/,@{$possible_status}))) {
+ 		    $sectioncount{$section}++;
+                 }
  	    }
  	}
      }
+     if ($only_students) {
+         return %sectioncount;
+     }
      my %courseroles = &Apache::lonnet::dump('nohist_userroles',$cdom,$cnum);
      foreach my $user (sort(keys(%courseroles))) {
  	if ($user !~ /^(\w{2})/) { next; }
  	my ($role) = ($user =~ /^(\w{2})/);
  	if ($possible_roles && !(grep(/^$role$/,@$possible_roles))) { next; }
- 	my $section;
+ 	my ($section,$status);
  	if ($role eq 'cr' &&
  	    $user =~ m-^$role/[^/]*/[^/]*/[^/]*:[^:]*:[^:]*:(\w+)-) {
  	    $section=$1;
  	}
  	if ($user =~ /^$role:[^:]*:[^:]*:(\w+)/) { $section=$1; }
  	if (!defined($section) || $section eq '-1') { next; }
- 	if (!defined($$sectioncount{$section})) { $numsections++; }
+         my ($end,$start) = ($courseroles{$user} =~ /^([^:]*):([^:]*)$/);
- 	$$sectioncount{$section}++;
+         if ($end == -1 && $start == -1) {
+             next; #deleted role
+         }
+         if (!defined($possible_status)) {
+             $sectioncount{$section}++;
+         } else {
+             if ((!$end || $end >= $now) && (!$start || $start <= $now)) {
+                 $status = 'active';
+             } elsif ($end < $now) {
+                 $status = 'future';
+             } elsif ($start > $now) {
+                 $status = 'previous';
+             }
+             if (($status ne '') && (grep/^\Q$status\E$/,@{$possible_status})) {
+                 $sectioncount{$section}++;
+             }
+         }
      }
-     return $numsections;
+     return %sectioncount;
  }
  ###############################################
  =pod
- =item get_course_users
+ =item * &get_course_users()
  Retrieves usernames:domains for users in the specified course
  with specific role(s), and access status.
- Line 3087  Incoming parameters:
+ Line 9439  Incoming parameters:
 . access status: users must have - either active,
  previous, future, or all.
 . reference to array of permissible roles
-. reference to results object (hash of hashes).
+. reference to array of section restrictions (optional)
- Keys of top level hash are roles.
+. reference to results object (hash of hashes).
+. reference to optional userdata hash
+. reference to optional statushash
+. flag if privileged users (except those set to unhide in
+    course settings) should be excluded
+ Keys of top level results hash are roles.
  Keys of inner hashes are username:domain, with
  values set to access type.
+ Optional userdata hash returns an array with arguments in the
+ same order as loncoursedata::get_classlist() for student data.
+ Optional statushash returns
+ Entries for end, start, section and status are blank because
+ of the possibility of multiple values for non-student roles.
  =cut
  ###############################################
  sub get_course_users {
-     my ($cdom,$cnum,$types,$roles,$users) = @_;
+     my ($cdom,$cnum,$types,$roles,$sections,$users,$userdata,$statushash,$hidepriv) = @_;
-     if (grep/^st$/,@{$roles}) {
+     my %idx = ();
-         my $statusidx = &Apache::loncoursedata::CL_STATUS();
+     my %seclists;
-         my $startidx = &Apache::loncoursedata::CL_START();
-         my $endidx = &Apache::loncoursedata::CL_END();
+     $idx{udom} = &Apache::loncoursedata::CL_SDOM();
+     $idx{uname} =  &Apache::loncoursedata::CL_SNAME();
+     $idx{end} = &Apache::loncoursedata::CL_END();
+     $idx{start} = &Apache::loncoursedata::CL_START();
+     $idx{id} = &Apache::loncoursedata::CL_ID();
+     $idx{section} = &Apache::loncoursedata::CL_SECTION();
+     $idx{fullname} = &Apache::loncoursedata::CL_FULLNAME();
+     $idx{status} = &Apache::loncoursedata::CL_STATUS();
+     if (grep(/^st$/,@{$roles})) {
          my ($classlist,$keylist)=&Apache::loncoursedata::get_classlist($cdom,$cnum);
          my $now = time;
          foreach my $student (keys(%{$classlist})) {
+             my $match = 0;
+             my $secmatch = 0;
+             my $section = $$classlist{$student}[$idx{section}];
+             my $status = $$classlist{$student}[$idx{status}];
+             if ($section eq '') {
+                 $section = 'none';
+             }
+             if ((ref($sections) eq 'ARRAY') && (@{$sections} > 0)) {
+                 if (grep(/^all$/,@{$sections})) {
+                     $secmatch = 1;
+                 } elsif ($$classlist{$student}[$idx{section}] eq '') {
+                     if (grep(/^none$/,@{$sections})) {
+                         $secmatch = 1;
+                     }
+                 } else {
+ 		    if (grep(/^\Q$section\E$/,@{$sections})) {
+ 		        $secmatch = 1;
+                     }
+ 		}
+                 if (!$secmatch) {
+                     next;
+                 }
+             }
              if (defined($$types{'active'})) {
-                 if ($$classlist{$student}[$statusidx] eq 'Active') {
+                 if ($$classlist{$student}[$idx{status}] eq 'Active') {
                      push(@{$$users{st}{$student}},'active');
+                     $match = 1;
                  }
              }
              if (defined($$types{'previous'})) {
-                 if ($$classlist{$student}[$endidx] <= $now) {
+                 if ($$classlist{$student}[$idx{status}] eq 'Expired') {
                      push(@{$$users{st}{$student}},'previous');
+                     $match = 1;
                  }
              }
              if (defined($$types{'future'})) {
-                 if (($$classlist{$student}[$startidx] > $now) && ($$classlist{$student}[$endidx] > $now) || ($$classlist{$student}[$endidx] == 0) || ($$classlist{$student}[$endidx] eq '')) {
+                 if ($$classlist{$student}[$idx{status}] eq 'Future') {
                      push(@{$$users{st}{$student}},'future');
+                     $match = 1;
+                 }
+             }
+             if ($match) {
+                 push(@{$seclists{$student}},$section);
+                 if (ref($userdata) eq 'HASH') {
+                     $$userdata{$student} = $$classlist{$student};
+                 }
+                 if (ref($statushash) eq 'HASH') {
+                     $statushash->{$student}{'st'}{$section} = $status;
                  }
              }
          }
      }
-     if ((@{$roles} > 0) && (@{$roles} ne "st")) {
+     if ((@{$roles} > 1) || ((@{$roles} == 1) && ($$roles[0] ne "st"))) {
-         my @coursepersonnel = &Apache::lonnet::getkeys('nohist_userroles',$cdom,$cnum);
+         my %coursepersonnel = &Apache::lonnet::dump('nohist_userroles',$cdom,$cnum);
-         foreach my $person (@coursepersonnel) {
+         my $now = time;
-             my ($role,$user) = ($person =~ /^([^:]*):([^:]+:[^:]+)/);
+         my %displaystatus = ( previous => 'Expired',
+                               active   => 'Active',
+                               future   => 'Future',
+                             );
+         my (%nothide,@possdoms);
+         if ($hidepriv) {
+             my %coursehash=&Apache::lonnet::coursedescription($cdom.'_'.$cnum);
+             foreach my $user (split(/\s*\,\s*/,$coursehash{'nothideprivileged'})) {
+                 if ($user !~ /:/) {
+                     $nothide{join(':',split(/[\@]/,$user))}=1;
+                 } else {
+                     $nothide{$user} = 1;
+                 }
+             }
+             my @possdoms = ($cdom);
+             if ($coursehash{'checkforpriv'}) {
+                 push(@possdoms,split(/,/,$coursehash{'checkforpriv'}));
+             }
+         }
+         foreach my $person (sort(keys(%coursepersonnel))) {
+             my $match = 0;
+             my $secmatch = 0;
+             my $status;
+             my ($role,$user,$usec) = ($person =~ /^([^:]*):([^:]+:[^:]+):([^:]*)/);
              $user =~ s/:$//;
-             if (($role) && (grep(/^$role$/,@{$roles}))) {
+             my ($end,$start) = split(/:/,$coursepersonnel{$person});
+             if ($end == -1 || $start == -1) {
+                 next;
+             }
+             if (($role) && ((grep(/^\Q$role\E$/,@{$roles})) ||
+                 (grep(/^cr$/,@{$roles}) && $role =~ /^cr\//))) {
                  my ($uname,$udom) = split(/:/,$user);
+                 if ((ref($sections) eq 'ARRAY') && (@{$sections} > 0)) {
+                     if (grep(/^all$/,@{$sections})) {
+                         $secmatch = 1;
+                     } elsif ($usec eq '') {
+                         if (grep(/^none$/,@{$sections})) {
+                             $secmatch = 1;
+                         }
+                     } else {
+                         if (grep(/^\Q$usec\E$/,@{$sections})) {
+                             $secmatch = 1;
+                         }
+                     }
+                     if (!$secmatch) {
+                         next;
+                     }
+                 }
+                 if ($usec eq '') {
+                     $usec = 'none';
+                 }
                  if ($uname ne '' && $udom ne '') {
-                     my $status = &check_user_status($udom,$uname,$cdom,$cnum,$role);
+                     if ($hidepriv) {
+                         if ((&Apache::lonnet::privileged($uname,$udom,\@possdoms)) &&
+                             (!$nothide{$uname.':'.$udom})) {
+                             next;
+                         }
+                     }
+                     if ($end > 0 && $end < $now) {
+                         $status = 'previous';
+                     } elsif ($start > $now) {
+                         $status = 'future';
+                     } else {
+                         $status = 'active';
+                     }
                      foreach my $type (keys(%{$types})) {
                          if ($status eq $type) {
-                             $$users{$role}{$user} = $type;
+                             if (!grep(/^\Q$type\E$/,@{$$users{$role}{$user}})) {
+                                 push(@{$$users{$role}{$user}},$type);
+                             }
+                             $match = 1;
+                         }
+                     }
+                     if (($match) && (ref($userdata) eq 'HASH')) {
+                         if (!exists($$userdata{$uname.':'.$udom})) {
+ 			    &get_user_info($udom,$uname,\%idx,$userdata);
+                         }
+                         if (!grep(/^\Q$usec\E$/,@{$seclists{$uname.':'.$udom}})) {
+                             push(@{$seclists{$uname.':'.$udom}},$usec);
+                         }
+                         if (ref($statushash) eq 'HASH') {
+                             $statushash->{$uname.':'.$udom}{$role}{$usec} = $displaystatus{$status};
                          }
                      }
                  }
              }
          }
-         if (grep/^ow$/,@{$roles}) {
+         if (grep(/^ow$/,@{$roles})) {
              if ((defined($cdom)) && (defined($cnum))) {
                  my %csettings = &Apache::lonnet::get('environment',['internal.courseowner'],$cdom,$cnum);
                  if ( defined($csettings{'internal.courseowner'}) ) {
                      my $owner = $csettings{'internal.courseowner'};
-                     $$users{'ow'}{$owner.':'.$cdom} = 'any';
+                     next if ($owner eq '');
+                     my ($ownername,$ownerdom);
+                     if ($owner =~ /^([^:]+):([^:]+)$/) {
+                         $ownername = $1;
+                         $ownerdom = $2;
+                     } else {
+                         $ownername = $owner;
+                         $ownerdom = $cdom;
+                         $owner = $ownername.':'.$ownerdom;
+                     }
+                     @{$$users{'ow'}{$owner}} = 'any';
+                     if (defined($userdata) &&
+ 			!exists($$userdata{$owner})) {
+ 			&get_user_info($ownerdom,$ownername,\%idx,$userdata);
+                         if (!grep(/^none$/,@{$seclists{$owner}})) {
+                             push(@{$seclists{$owner}},'none');
+                         }
+                         if (ref($statushash) eq 'HASH') {
+                             $statushash->{$owner}{'ow'}{'none'} = 'Any';
+                         }
+ 		    }
                  }
              }
          }
+         foreach my $user (keys(%seclists)) {
+             @{$seclists{$user}} = (sort {$a <=> $b} @{$seclists{$user}});
+             $$userdata{$user}[$idx{section}] = join(',',@{$seclists{$user}});
+         }
      }
      return;
  }
+ sub get_user_info {
+     my ($udom,$uname,$idx,$userdata) = @_;
+     $$userdata{$uname.':'.$udom}[$$idx{fullname}] =
+ 	&plainname($uname,$udom,'lastname');
+     $$userdata{$uname.':'.$udom}[$$idx{uname}] = $uname;
+     $$userdata{$uname.':'.$udom}[$$idx{udom}] = $udom;
+     my %idhash =  &Apache::lonnet::idrget($udom,($uname));
+     $$userdata{$uname.':'.$udom}[$$idx{id}] = $idhash{$uname};
+     return;
+ }
+ ###############################################
+ =pod
+ =item * &get_user_quota()
+ Retrieves quota assigned for storage of user files.
+ Default is to report quota for portfolio files.
+ Incoming parameters:
+. user's username
+. user's domain
+. quota name - portfolio, author, or course
+    (if no quota name provided, defaults to portfolio).
+. crstype - official, unofficial, textbook, placement or community,
+    if quota name is course
+ Returns:
+. Disk quota (in MB) assigned to student.
+. (Optional) Type of setting: custom or default
+    (individually assigned or default for user's
+    institutional status).
+. (Optional) - User's institutional status (e.g., faculty, staff
+    or student - types as defined in localenroll::inst_usertypes
+    for user's domain, which determines default quota for user.
+. (Optional) - Default quota which would apply to the user.
+ If a value has been stored in the user's environment,
+ it will return that, otherwise it returns the maximal default
+ defined for the user's institutional status(es) in the domain.
+ =cut
  ###############################################
- sub get_posted_cgi {
-     my $r=shift;
-     my $buffer;
+ sub get_user_quota {
-     if ($r->header_in('Content-length')) {
+     my ($uname,$udom,$quotaname,$crstype) = @_;
- 	$r->read($buffer,$r->header_in('Content-length'),0);
+     my ($quota,$quotatype,$settingstatus,$defquota);
-     }
+     if (!defined($udom)) {
-     unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
+         $udom = $env{'user.domain'};
- 	my @pairs=split(/&/,$buffer);
+     }
- 	my $pair;
+     if (!defined($uname)) {
- 	foreach $pair (@pairs) {
+         $uname = $env{'user.name'};
- 	    my ($name,$value) = split(/=/,$pair);
+     }
- 	    $value =~ tr/+/ /;
+     if (($udom eq '' || $uname eq '') ||
- 	    $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
+         ($udom eq 'public') && ($uname eq 'public')) {
- 	    $name  =~ tr/+/ /;
+         $quota = 0;
- 	    $name  =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
+         $quotatype = 'default';
- 	    &add_to_env("form.$name",$value);
+         $defquota = 0;
- 	}
+     } else {
-     } else {
+         my $inststatus;
- 	my $contentsep=$1;
+         if ($quotaname eq 'course') {
- 	my @lines = split (/\n/,$buffer);
+             if (($env{'course.'.$udom.'_'.$uname.'.num'} eq $uname) &&
- 	my $name='';
+                 ($env{'course.'.$udom.'_'.$uname.'.domain'} eq $udom)) {
- 	my $value='';
+                 $quota = $env{'course.'.$udom.'_'.$uname.'.internal.uploadquota'};
- 	my $fname='';
+             } else {
- 	my $fmime='';
+                 my %cenv = &Apache::lonnet::coursedescription("$udom/$uname");
- 	my $i;
+                 $quota = $cenv{'internal.uploadquota'};
- 	for ($i=0;$i<=$#lines;$i++) {
+             }
- 	    if ($lines[$i]=~/^$contentsep/) {
+         } else {
- 		if ($name) {
+             if ($udom eq $env{'user.domain'} && $uname eq $env{'user.name'}) {
- 		    chomp($value);
+                 if ($quotaname eq 'author') {
- 		    if ($fname) {
+                     $quota = $env{'environment.authorquota'};
- 			$env{"form.$name.filename"}=$fname;
+                 } else {
- 			$env{"form.$name.mimetype"}=$fmime;
+                     $quota = $env{'environment.portfolioquota'};
- 		    } else {
+                 }
- 			$value=~s/\s+$//s;
+                 $inststatus = $env{'environment.inststatus'};
- 		    }
+             } else {
- 		    &add_to_env("form.$name",$value);
+                 my %userenv =
- 		}
+                     &Apache::lonnet::get('environment',['portfolioquota',
- 		if ($i<$#lines) {
+                                          'authorquota','inststatus'],$udom,$uname);
- 		    $i++;
+                 my ($tmp) = keys(%userenv);
- 		    $lines[$i]=~
+                 if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
- 		/Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
+                     if ($quotaname eq 'author') {
- 		    $name=$1;
+                         $quota = $userenv{'authorquota'};
- 		    $value='';
+                     } else {
- 		    if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
+                         $quota = $userenv{'portfolioquota'};
- 			$fname=$1;
+                     }
- 			if
+                     $inststatus = $userenv{'inststatus'};
-                             ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
+                 } else {
- 				$fmime=$1;
+                     undef(%userenv);
- 				$i++;
+                 }
- 			    } else {
+             }
- 				$fmime='';
+         }
- 			    }
+         if ($quota eq '' || wantarray) {
- 		    } else {
+             if ($quotaname eq 'course') {
- 			$fname='';
+                 my %domdefs = &Apache::lonnet::get_domain_defaults($udom);
- 			$fmime='';
+                 if (($crstype eq 'official') || ($crstype eq 'unofficial') ||
- 		    }
+                     ($crstype eq 'community') || ($crstype eq 'textbook') ||
- 		    $i++;
+                     ($crstype eq 'placement')) {
- 		}
+                     $defquota = $domdefs{$crstype.'quota'};
- 	    } else {
+                 }
- 		$value.=$lines[$i]."\n";
+                 if ($defquota eq '') {
- 	    }
+                     $defquota = 500;
+                 }
+             } else {
+                 ($defquota,$settingstatus) = &default_quota($udom,$inststatus,$quotaname);
+             }
+             if ($quota eq '') {
+                 $quota = $defquota;
+                 $quotatype = 'default';
+             } else {
+                 $quotatype = 'custom';
+             }
+         }
+     }
+     if (wantarray) {
+         return ($quota,$quotatype,$settingstatus,$defquota);
+     } else {
+         return $quota;
+     }
+ }
+ ###############################################
+ =pod
+ =item * &default_quota()
+ Retrieves default quota assigned for storage of user portfolio files,
+ given an (optional) user's institutional status.
+ Incoming parameters:
+. domain
+. (Optional) institutional status(es).  This is a : separated list of
+    status types (e.g., faculty, staff, student etc.)
+    which apply to the user for whom the default is being retrieved.
+    If the institutional status string in undefined, the domain
+    default quota will be returned.
+.  quota name - portfolio, author, or course
+    (if no quota name provided, defaults to portfolio).
+ Returns:
+. Default disk quota (in MB) for user portfolios in the domain.
+. (Optional) institutional type which determined the value of the
+    default quota.
+ If a value has been stored in the domain's configuration db,
+ it will return that, otherwise it returns 20 (for backwards
+ compatibility with domains which have not set up a configuration
+ db file; the original statically defined portfolio quota was 20 MB).
+ If the user's status includes multiple types (e.g., staff and student),
+ the largest default quota which applies to the user determines the
+ default quota returned.
+ =cut
+ ###############################################
+ sub default_quota {
+     my ($udom,$inststatus,$quotaname) = @_;
+     my ($defquota,$settingstatus);
+     my %quotahash = &Apache::lonnet::get_dom('configuration',
+                                             ['quotas'],$udom);
+     my $key = 'defaultquota';
+     if ($quotaname eq 'author') {
+         $key = 'authorquota';
+     }
+     if (ref($quotahash{'quotas'}) eq 'HASH') {
+         if ($inststatus ne '') {
+             my @statuses = map { &unescape($_); } split(/:/,$inststatus);
+             foreach my $item (@statuses) {
+                 if (ref($quotahash{'quotas'}{$key}) eq 'HASH') {
+                     if ($quotahash{'quotas'}{$key}{$item} ne '') {
+                         if ($defquota eq '') {
+                             $defquota = $quotahash{'quotas'}{$key}{$item};
+                             $settingstatus = $item;
+                         } elsif ($quotahash{'quotas'}{$key}{$item} > $defquota) {
+                             $defquota = $quotahash{'quotas'}{$key}{$item};
+                             $settingstatus = $item;
+                         }
+                     }
+                 } elsif ($key eq 'defaultquota') {
+                     if ($quotahash{'quotas'}{$item} ne '') {
+                         if ($defquota eq '') {
+                             $defquota = $quotahash{'quotas'}{$item};
+                             $settingstatus = $item;
+                         } elsif ($quotahash{'quotas'}{$item} > $defquota) {
+                             $defquota = $quotahash{'quotas'}{$item};
+                             $settingstatus = $item;
+                         }
+                     }
+                 }
+             }
+         }
+         if ($defquota eq '') {
+             if (ref($quotahash{'quotas'}{$key}) eq 'HASH') {
+                 $defquota = $quotahash{'quotas'}{$key}{'default'};
+             } elsif ($key eq 'defaultquota') {
+                 $defquota = $quotahash{'quotas'}{'default'};
+             }
+             $settingstatus = 'default';
+             if ($defquota eq '') {
+                 if ($quotaname eq 'author') {
+                     $defquota = 500;
+                 }
+             }
+         }
+     } else {
+         $settingstatus = 'default';
+         if ($quotaname eq 'author') {
+             $defquota = 500;
+         } else {
+             $defquota = 20;
+         }
+     }
+     if (wantarray) {
+         return ($defquota,$settingstatus);
+     } else {
+         return $defquota;
+     }
+ }
+ ###############################################
+ =pod
+ =item * &excess_filesize_warning()
+ Returns warning message if upload of file to authoring space, or copying
+ of existing file within authoring space will cause quota for the authoring
+ space to be exceeded.
+ Same, if upload of a file directly to a course/community via Course Editor
+ will cause quota for uploaded content for the course to be exceeded.
+ Inputs: 7
+. username or coursenum
+. domain
+. context ('author' or 'course')
+. filename of file for which action is being requested
+. filesize (kB) of file
+. action being taken: copy or upload.
+. quotatype (in course context -- official, unofficial, textbook, placement or community).
+ Returns: 1 scalar: HTML to display containing warning if quota would be exceeded,
+          otherwise return null.
+ =back
+ =cut
+ sub excess_filesize_warning {
+     my ($uname,$udom,$context,$filename,$filesize,$action,$quotatype) = @_;
+     my $current_disk_usage = 0;
+     my $disk_quota = &get_user_quota($uname,$udom,$context,$quotatype); #expressed in MB
+     if ($context eq 'author') {
+         my $authorspace = $Apache::lonnet::perlvar{'lonDocRoot'}."/priv/$udom/$uname";
+         $current_disk_usage = &Apache::lonnet::diskusage($udom,$uname,$authorspace);
+     } else {
+         foreach my $subdir ('docs','supplemental') {
+             $current_disk_usage += &Apache::lonnet::diskusage($udom,$uname,"userfiles/$subdir",1);
+         }
+     }
+     $disk_quota = int($disk_quota * 1000);
+     if (($current_disk_usage + $filesize) > $disk_quota) {
+         return '<p class="LC_warning">'.
+                 &mt("Unable to $action [_1]. (size = [_2] kilobytes). Disk quota will be exceeded.",
+                     '<span class="LC_filename">'.$filename.'</span>',$filesize).'</p>'.
+                '<p>'.&mt('Disk quota is [_1] kilobytes. Your current disk usage is [_2] kilobytes.',
+                             $disk_quota,$current_disk_usage).
+                '</p>';
+     }
+     return;
+ }
+ ###############################################
+ sub get_secgrprole_info {
+     my ($cdom,$cnum,$needroles,$type)  = @_;
+     my %sections_count = &get_sections($cdom,$cnum);
+     my @sections =  (sort {$a <=> $b} keys(%sections_count));
+     my %curr_groups = &Apache::longroup::coursegroups($cdom,$cnum);
+     my @groups = sort(keys(%curr_groups));
+     my $allroles = [];
+     my $rolehash;
+     my $accesshash = {
+                      active => 'Currently has access',
+                      future => 'Will have future access',
+                      previous => 'Previously had access',
+                   };
+     if ($needroles) {
+         $rolehash = {'all' => 'all'};
+         my %user_roles = &Apache::lonnet::dump('nohist_userroles',$cdom,$cnum);
+ 	if (&Apache::lonnet::error(%user_roles)) {
+ 	    undef(%user_roles);
+ 	}
+         foreach my $item (keys(%user_roles)) {
+             my ($role)=split(/\:/,$item,2);
+             if ($role eq 'cr') { next; }
+             if ($role =~ /^cr/) {
+                 $$rolehash{$role} = (split('/',$role))[3];
+             } else {
+                 $$rolehash{$role} = &Apache::lonnet::plaintext($role,$type);
+             }
+         }
+         foreach my $key (sort(keys(%{$rolehash}))) {
+             push(@{$allroles},$key);
+         }
+         push (@{$allroles},'st');
+         $$rolehash{'st'} = &Apache::lonnet::plaintext('st',$type);
+     }
+     return (\@sections,\@groups,$allroles,$rolehash,$accesshash);
+ }
+ sub user_picker {
+     my ($dom,$srch,$forcenewuser,$caller,$cancreate,$usertype,$context,$fixeddom) = @_;
+     my $currdom = $dom;
+     my @alldoms = &Apache::lonnet::all_domains();
+     if (@alldoms == 1) {
+         my %domsrch = &Apache::lonnet::get_dom('configuration',
+                                                ['directorysrch'],$alldoms[0]);
+         my $domdesc = &Apache::lonnet::domain($alldoms[0],'description');
+         my $showdom = $domdesc;
+         if ($showdom eq '') {
+             $showdom = $dom;
+         }
+         if (ref($domsrch{'directorysrch'}) eq 'HASH') {
+             if ((!$domsrch{'directorysrch'}{'available'}) &&
+                 ($domsrch{'directorysrch'}{'lcavailable'} eq '0')) {
+                 return (&mt('LON-CAPA directory search is not available in domain: [_1]',$showdom),0);
+             }
+         }
+     }
+     my %curr_selected = (
+                         srchin => 'dom',
+                         srchby => 'lastname',
+                       );
+     my $srchterm;
+     if ((ref($srch) eq 'HASH') && ($env{'form.origform'} ne 'crtusername')) {
+         if ($srch->{'srchby'} ne '') {
+             $curr_selected{'srchby'} = $srch->{'srchby'};
+         }
+         if ($srch->{'srchin'} ne '') {
+             $curr_selected{'srchin'} = $srch->{'srchin'};
+         }
+         if ($srch->{'srchtype'} ne '') {
+             $curr_selected{'srchtype'} = $srch->{'srchtype'};
+         }
+         if ($srch->{'srchdomain'} ne '') {
+             $currdom = $srch->{'srchdomain'};
+         }
+         $srchterm = $srch->{'srchterm'};
+     }
+     my %html_lt=&Apache::lonlocal::texthash(
+                     'usr'       => 'Search criteria',
+                     'doma'      => 'Domain/institution to search',
+                     'uname'     => 'username',
+                     'lastname'  => 'last name',
+                     'lastfirst' => 'last name, first name',
+                     'crs'       => 'in this course',
+                     'dom'       => 'in selected LON-CAPA domain',
+                     'alc'       => 'all LON-CAPA',
+                     'instd'     => 'in institutional directory for selected domain',
+                     'exact'     => 'is',
+                     'contains'  => 'contains',
+                     'begins'    => 'begins with',
+                                        );
+     my %js_lt=&Apache::lonlocal::texthash(
+                     'youm'      => "You must include some text to search for.",
+                     'thte'      => "The text you are searching for must contain at least two characters when using a 'begins' type search.",
+                     'thet'      => "The text you are searching for must contain at least three characters when using a 'contains' type search.",
+                     'yomc'      => "You must choose a domain when using an institutional directory search.",
+                     'ymcd'      => "You must choose a domain when using a domain search.",
+                     'whus'      => "When using searching by last,first you must include a comma as separator between last name and first name.",
+                     'whse'      => "When searching by last,first you must include at least one character in the first name.",
+                      'thfo'     => "The following need to be corrected before the search can be run:",
+                                        );
+     &html_escape(\%html_lt);
+     &js_escape(\%js_lt);
+     my $domform;
+     if ($fixeddom) {
+         $domform = &select_dom_form($currdom,'srchdomain',1,1,undef,[$currdom]);
+     } else {
+         $domform = &select_dom_form($currdom,'srchdomain',1,1);
+     }
+     my $srchinsel = ' <select name="srchin">';
+     my @srchins = ('crs','dom','alc','instd');
+     foreach my $option (@srchins) {
+         # FIXME 'alc' option unavailable until
+         #       loncreateuser::print_user_query_page()
+         #       has been completed.
+         next if ($option eq 'alc');
+         next if (($option eq 'crs') && ($env{'form.form'} eq 'requestcrs'));
+         next if ($option eq 'crs' && !$env{'request.course.id'});
+         if ($curr_selected{'srchin'} eq $option) {
+             $srchinsel .= '
+    <option value="'.$option.'" selected="selected">'.$html_lt{$option}.'</option>';
+         } else {
+             $srchinsel .= '
+    <option value="'.$option.'">'.$html_lt{$option}.'</option>';
+         }
+     }
+     $srchinsel .= "\n  </select>\n";
+     my $srchbysel =  ' <select name="srchby">';
+     foreach my $option ('lastname','lastfirst','uname') {
+         if ($curr_selected{'srchby'} eq $option) {
+             $srchbysel .= '
+    <option value="'.$option.'" selected="selected">'.$html_lt{$option}.'</option>';
+         } else {
+             $srchbysel .= '
+    <option value="'.$option.'">'.$html_lt{$option}.'</option>';
+          }
+     }
+     $srchbysel .= "\n  </select>\n";
+     my $srchtypesel = ' <select name="srchtype">';
+     foreach my $option ('begins','contains','exact') {
+         if ($curr_selected{'srchtype'} eq $option) {
+             $srchtypesel .= '
+    <option value="'.$option.'" selected="selected">'.$html_lt{$option}.'</option>';
+         } else {
+             $srchtypesel .= '
+    <option value="'.$option.'">'.$html_lt{$option}.'</option>';
+         }
+     }
+     $srchtypesel .= "\n  </select>\n";
+     my ($newuserscript,$new_user_create);
+     my $context_dom = $env{'request.role.domain'};
+     if ($context eq 'requestcrs') {
+         if ($env{'form.coursedom'} ne '') {
+             $context_dom = $env{'form.coursedom'};
+         }
+     }
+     if ($forcenewuser) {
+         if (ref($srch) eq 'HASH') {
+             if ($srch->{'srchby'} eq 'uname' && $srch->{'srchtype'} eq 'exact' && $srch->{'srchin'} eq 'dom' && $srch->{'srchdomain'} eq $context_dom) {
+                 if ($cancreate) {
+                     $new_user_create = '<p> <input type="submit" name="forcenew" value="'.&HTML::Entities::encode(&mt('Make new user "[_1]"',$srchterm),'<>&"').'" onclick="javascript:setSearch(\'1\','.$caller.');" /> </p>';
+                 } else {
+                     my $helplink = 'javascript:helpMenu('."'display'".')';
+                     my %usertypetext = (
+                         official   => 'institutional',
+                         unofficial => 'non-institutional',
+                     );
+                     $new_user_create = '<p class="LC_warning">'
+                                       .&mt("You are not authorized to create new $usertypetext{$usertype} users in this domain.")
+                                       .' '
+                                       .&mt('Please contact the [_1]helpdesk[_2] for assistance.'
+                                           ,'<a href="'.$helplink.'">','</a>')
+                                       .'</p><br />';
+                 }
+             }
+         }
+         $newuserscript = <<"ENDSCRIPT";
+ function setSearch(createnew,callingForm) {
+     if (createnew == 1) {
+         for (var i=0; i<callingForm.srchby.length; i++) {
+             if (callingForm.srchby.options[i].value == 'uname') {
+                 callingForm.srchby.selectedIndex = i;
+             }
+         }
+         for (var i=0; i<callingForm.srchin.length; i++) {
+             if ( callingForm.srchin.options[i].value == 'dom') {
+ 		callingForm.srchin.selectedIndex = i;
+             }
+         }
+         for (var i=0; i<callingForm.srchtype.length; i++) {
+             if (callingForm.srchtype.options[i].value == 'exact') {
+                 callingForm.srchtype.selectedIndex = i;
+             }
+         }
+         for (var i=0; i<callingForm.srchdomain.length; i++) {
+             if (callingForm.srchdomain.options[i].value == '$context_dom') {
+                 callingForm.srchdomain.selectedIndex = i;
+             }
+         }
+     }
+ }
+ ENDSCRIPT
+     }
+     my $output = <<"END_BLOCK";
+ <script type="text/javascript">
+ // <![CDATA[
+ function validateEntry(callingForm) {
+     var checkok = 1;
+     var srchin;
+     for (var i=0; i<callingForm.srchin.length; i++) {
+ 	if ( callingForm.srchin[i].checked ) {
+ 	    srchin = callingForm.srchin[i].value;
  	}
      }
-     $env{'request.method'}=$ENV{'REQUEST_METHOD'};
-     $r->method_number(M_GET);
+     var srchtype = callingForm.srchtype.options[callingForm.srchtype.selectedIndex].value;
-     $r->method('GET');
+     var srchby = callingForm.srchby.options[callingForm.srchby.selectedIndex].value;
-     $r->headers_in->unset('Content-length');
+     var srchdomain = callingForm.srchdomain.options[callingForm.srchdomain.selectedIndex].value;
+     var srchterm =  callingForm.srchterm.value;
+     var srchin = callingForm.srchin.options[callingForm.srchin.selectedIndex].value;
+     var msg = "";
+     if (srchterm == "") {
+         checkok = 0;
+         msg += "$js_lt{'youm'}\\n";
+     }
+     if (srchtype== 'begins') {
+         if (srchterm.length < 2) {
+             checkok = 0;
+             msg += "$js_lt{'thte'}\\n";
+         }
+     }
+     if (srchtype== 'contains') {
+         if (srchterm.length < 3) {
+             checkok = 0;
+             msg += "$js_lt{'thet'}\\n";
+         }
+     }
+     if (srchin == 'instd') {
+         if (srchdomain == '') {
+             checkok = 0;
+             msg += "$js_lt{'yomc'}\\n";
+         }
+     }
+     if (srchin == 'dom') {
+         if (srchdomain == '') {
+             checkok = 0;
+             msg += "$js_lt{'ymcd'}\\n";
+         }
+     }
+     if (srchby == 'lastfirst') {
+         if (srchterm.indexOf(",") == -1) {
+             checkok = 0;
+             msg += "$js_lt{'whus'}\\n";
+         }
+         if (srchterm.indexOf(",") == srchterm.length -1) {
+             checkok = 0;
+             msg += "$js_lt{'whse'}\\n";
+         }
+     }
+     if (checkok == 0) {
+         alert("$js_lt{'thfo'}\\n"+msg);
+         return;
+     }
+     if (checkok == 1) {
+         callingForm.submit();
+     }
+ }
+ $newuserscript
+ // ]]>
+ </script>
+ $new_user_create
+ END_BLOCK
+     $output .= &Apache::lonhtmlcommon::start_pick_box().
+                &Apache::lonhtmlcommon::row_title($html_lt{'doma'}).
+                $domform.
+                &Apache::lonhtmlcommon::row_closure().
+                &Apache::lonhtmlcommon::row_title($html_lt{'usr'}).
+                $srchbysel.
+                $srchtypesel.
+                '<input type="text" size="15" name="srchterm" value="'.$srchterm.'" />'.
+                $srchinsel.
+                &Apache::lonhtmlcommon::row_closure(1).
+                &Apache::lonhtmlcommon::end_pick_box().
+                '<br />';
+     return ($output,1);
+ }
+ sub user_rule_check {
+     my ($usershash,$checks,$alerts,$rulematch,$inst_results,$curr_rules,$got_rules) = @_;
+     my ($response,%inst_response);
+     if (ref($usershash) eq 'HASH') {
+         if (keys(%{$usershash}) > 1) {
+             my (%by_username,%by_id,%userdoms);
+             my $checkid;
+             if (ref($checks) eq 'HASH') {
+                 if ((!defined($checks->{'username'})) && (defined($checks->{'id'}))) {
+                     $checkid = 1;
+                 }
+             }
+             foreach my $user (keys(%{$usershash})) {
+                 my ($uname,$udom) = split(/:/,$user);
+                 if ($checkid) {
+                     if (ref($usershash->{$user}) eq 'HASH') {
+                         if ($usershash->{$user}->{'id'} ne '') {
+                             $by_id{$udom}{$usershash->{$user}->{'id'}} = $uname;
+                             $userdoms{$udom} = 1;
+                             if (ref($inst_results) eq 'HASH') {
+                                 $inst_results->{$uname.':'.$udom} = {};
+                             }
+                         }
+                     }
+                 } else {
+                     $by_username{$udom}{$uname} = 1;
+                     $userdoms{$udom} = 1;
+                     if (ref($inst_results) eq 'HASH') {
+                         $inst_results->{$uname.':'.$udom} = {};
+                     }
+                 }
+             }
+             foreach my $udom (keys(%userdoms)) {
+                 if (!$got_rules->{$udom}) {
+                     my %domconfig = &Apache::lonnet::get_dom('configuration',
+                                                              ['usercreation'],$udom);
+                     if (ref($domconfig{'usercreation'}) eq 'HASH') {
+                         foreach my $item ('username','id') {
+                             if (ref($domconfig{'usercreation'}{$item.'_rule'}) eq 'ARRAY') {
+                                 $$curr_rules{$udom}{$item} =
+                                     $domconfig{'usercreation'}{$item.'_rule'};
+                             }
+                         }
+                     }
+                     $got_rules->{$udom} = 1;
+                 }
+             }
+             if ($checkid) {
+                 foreach my $udom (keys(%by_id)) {
+                     my ($outcome,$results) = &Apache::lonnet::get_multiple_instusers($udom,$by_id{$udom},'id');
+                     if ($outcome eq 'ok') {
+                         foreach my $id (keys(%{$by_id{$udom}})) {
+                             my $uname = $by_id{$udom}{$id};
+                             $inst_response{$uname.':'.$udom} = $outcome;
+                         }
+                         if (ref($results) eq 'HASH') {
+                             foreach my $uname (keys(%{$results})) {
+                                 if (exists($inst_response{$uname.':'.$udom})) {
+                                     $inst_response{$uname.':'.$udom} = $outcome;
+                                     $inst_results->{$uname.':'.$udom} = $results->{$uname};
+                                 }
+                             }
+                         }
+                     }
+                 }
+             } else {
+                 foreach my $udom (keys(%by_username)) {
+                     my ($outcome,$results) = &Apache::lonnet::get_multiple_instusers($udom,$by_username{$udom});
+                     if ($outcome eq 'ok') {
+                         foreach my $uname (keys(%{$by_username{$udom}})) {
+                             $inst_response{$uname.':'.$udom} = $outcome;
+                         }
+                         if (ref($results) eq 'HASH') {
+                             foreach my $uname (keys(%{$results})) {
+                                 $inst_results->{$uname.':'.$udom} = $results->{$uname};
+                             }
+                         }
+                     }
+                 }
+             }
+         } elsif (keys(%{$usershash}) == 1) {
+             my $user = (keys(%{$usershash}))[0];
+             my ($uname,$udom) = split(/:/,$user);
+             if (($udom ne '') && ($uname ne '')) {
+                 if (ref($usershash->{$user}) eq 'HASH') {
+                     if (ref($checks) eq 'HASH') {
+                         if (defined($checks->{'username'})) {
+                             ($inst_response{$user},%{$inst_results->{$user}}) =
+                                 &Apache::lonnet::get_instuser($udom,$uname);
+                         } elsif (defined($checks->{'id'})) {
+                             if ($usershash->{$user}->{'id'} ne '') {
+                                 ($inst_response{$user},%{$inst_results->{$user}}) =
+                                     &Apache::lonnet::get_instuser($udom,undef,
+                                                                   $usershash->{$user}->{'id'});
+                             } else {
+                                 ($inst_response{$user},%{$inst_results->{$user}}) =
+                                     &Apache::lonnet::get_instuser($udom,$uname);
+                             }
+                         }
+                     } else {
+                        ($inst_response{$user},%{$inst_results->{$user}}) =
+                             &Apache::lonnet::get_instuser($udom,$uname);
+                        return;
+                     }
+                     if (!$got_rules->{$udom}) {
+                         my %domconfig = &Apache::lonnet::get_dom('configuration',
+                                                                  ['usercreation'],$udom);
+                         if (ref($domconfig{'usercreation'}) eq 'HASH') {
+                             foreach my $item ('username','id') {
+                                 if (ref($domconfig{'usercreation'}{$item.'_rule'}) eq 'ARRAY') {
+                                    $$curr_rules{$udom}{$item} =
+                                        $domconfig{'usercreation'}{$item.'_rule'};
+                                 }
+                             }
+                         }
+                         $got_rules->{$udom} = 1;
+                     }
+                 }
+             } else {
+                 return;
+             }
+         } else {
+             return;
+         }
+         foreach my $user (keys(%{$usershash})) {
+             my ($uname,$udom) = split(/:/,$user);
+             next if (($udom eq '') || ($uname eq ''));
+             my $id;
+             if (ref($inst_results) eq 'HASH') {
+                 if (ref($inst_results->{$user}) eq 'HASH') {
+                     $id = $inst_results->{$user}->{'id'};
+                 }
+             }
+             if ($id eq '') {
+                 if (ref($usershash->{$user})) {
+                     $id = $usershash->{$user}->{'id'};
+                 }
+             }
+             foreach my $item (keys(%{$checks})) {
+                 if (ref($$curr_rules{$udom}) eq 'HASH') {
+                     if (ref($$curr_rules{$udom}{$item}) eq 'ARRAY') {
+                         if (@{$$curr_rules{$udom}{$item}} > 0) {
+                             my %rule_check = &Apache::lonnet::inst_rulecheck($udom,$uname,$id,$item,
+                                                                              $$curr_rules{$udom}{$item});
+                             foreach my $rule (@{$$curr_rules{$udom}{$item}}) {
+                                 if ($rule_check{$rule}) {
+                                     $$rulematch{$user}{$item} = $rule;
+                                     if ($inst_response{$user} eq 'ok') {
+                                         if (ref($inst_results) eq 'HASH') {
+                                             if (ref($inst_results->{$user}) eq 'HASH') {
+                                                 if (keys(%{$inst_results->{$user}}) == 0) {
+                                                     $$alerts{$item}{$udom}{$uname} = 1;
+                                                 } elsif ($item eq 'id') {
+                                                     if ($inst_results->{$user}->{'id'} eq '') {
+                                                         $$alerts{$item}{$udom}{$uname} = 1;
+                                                     }
+                                                 }
+                                             }
+                                         }
+                                     }
+                                     last;
+                                 }
+                             }
+                         }
+                     }
+                 }
+             }
+         }
+     }
+     return;
+ }
+ sub user_rule_formats {
+     my ($domain,$domdesc,$curr_rules,$check) = @_;
+     my %text = (
+                  'username' => 'Usernames',
+                  'id'       => 'IDs',
+                );
+     my $output;
+     my ($rules,$ruleorder) = &Apache::lonnet::inst_userrules($domain,$check);
+     if ((ref($rules) eq 'HASH') && (ref($ruleorder) eq 'ARRAY')) {
+         if (@{$ruleorder} > 0) {
+             $output = '<br />'.
+                       &mt($text{$check}.' with the following format(s) may [_1]only[_2] be used for verified users at [_3]:',
+                           '<span class="LC_cusr_emph">','</span>',$domdesc).
+                       ' <ul>';
+             foreach my $rule (@{$ruleorder}) {
+                 if (ref($curr_rules) eq 'ARRAY') {
+                     if (grep(/^\Q$rule\E$/,@{$curr_rules})) {
+                         if (ref($rules->{$rule}) eq 'HASH') {
+                             $output .= '<li>'.$rules->{$rule}{'name'}.': '.
+                                         $rules->{$rule}{'desc'}.'</li>';
+                         }
+                     }
+                 }
+             }
+             $output .= '</ul>';
+         }
+     }
+     return $output;
+ }
+ sub instrule_disallow_msg {
+     my ($checkitem,$domdesc,$count,$mode) = @_;
+     my $response;
+     my %text = (
+                   item   => 'username',
+                   items  => 'usernames',
+                   match  => 'matches',
+                   do     => 'does',
+                   action => 'a username',
+                   one    => 'one',
+                );
+     if ($count > 1) {
+         $text{'item'} = 'usernames';
+         $text{'match'} ='match';
+         $text{'do'} = 'do';
+         $text{'action'} = 'usernames',
+         $text{'one'} = 'ones';
+     }
+     if ($checkitem eq 'id') {
+         $text{'items'} = 'IDs';
+         $text{'item'} = 'ID';
+         $text{'action'} = 'an ID';
+         if ($count > 1) {
+             $text{'item'} = 'IDs';
+             $text{'action'} = 'IDs';
+         }
+     }
+     $response = &mt("The $text{'item'} you chose $text{'match'} the format of $text{'items'} defined for [_1], but the $text{'item'} $text{'do'} not exist in the institutional directory.",'<span class="LC_cusr_emph">'.$domdesc.'</span>').'<br />';
+     if ($mode eq 'upload') {
+         if ($checkitem eq 'username') {
+             $response .= &mt("You will need to modify your upload file so it will include $text{'action'} with a different format --  $text{'one'} that will not conflict with 'official' institutional $text{'items'}.");
+         } elsif ($checkitem eq 'id') {
+             $response .= &mt("Either upload a file which includes $text{'action'} with a different format --  $text{'one'} that will not conflict with 'official' institutional $text{'items'}, or when associating fields with data columns, omit an association for the Student/Employee ID field.");
+         }
+     } elsif ($mode eq 'selfcreate') {
+         if ($checkitem eq 'id') {
+             $response .= &mt("You must either choose $text{'action'} with a different format --  $text{'one'} that will not conflict with 'official' institutional $text{'items'}, or leave the ID field blank.");
+         }
+     } else {
+         if ($checkitem eq 'username') {
+             $response .= &mt("You must choose $text{'action'} with a different format --  $text{'one'} that will not conflict with 'official' institutional $text{'items'}.");
+         } elsif ($checkitem eq 'id') {
+             $response .= &mt("You must either choose $text{'action'} with a different format --  $text{'one'} that will not conflict with 'official' institutional $text{'items'}, or leave the ID field blank.");
+         }
+     }
+     return $response;
+ }
+ sub personal_data_fieldtitles {
+     my %fieldtitles = &Apache::lonlocal::texthash (
+                         id => 'Student/Employee ID',
+                         permanentemail => 'E-mail address',
+                         lastname => 'Last Name',
+                         firstname => 'First Name',
+                         middlename => 'Middle Name',
+                         generation => 'Generation',
+                         gen => 'Generation',
+                         inststatus => 'Affiliation',
+                    );
+     return %fieldtitles;
+ }
+ sub sorted_inst_types {
+     my ($dom) = @_;
+     my ($usertypes,$order);
+     my %domdefaults = &Apache::lonnet::get_domain_defaults($dom);
+     if (ref($domdefaults{'inststatus'}) eq 'HASH') {
+         $usertypes = $domdefaults{'inststatus'}{'inststatustypes'};
+         $order = $domdefaults{'inststatus'}{'inststatusorder'};
+     } else {
+         ($usertypes,$order) = &Apache::lonnet::retrieve_inst_usertypes($dom);
+     }
+     my $othertitle = &mt('All users');
+     if ($env{'request.course.id'}) {
+         $othertitle  = &mt('Any users');
+     }
+     my @types;
+     if (ref($order) eq 'ARRAY') {
+         @types = @{$order};
+     }
+     if (@types == 0) {
+         if (ref($usertypes) eq 'HASH') {
+             @types = sort(keys(%{$usertypes}));
+         }
+     }
+     if (keys(%{$usertypes}) > 0) {
+         $othertitle = &mt('Other users');
+     }
+     return ($othertitle,$usertypes,\@types);
+ }
+ sub get_institutional_codes {
+     my ($settings,$allcourses,$LC_code) = @_;
+ # Get complete list of course sections to update
+     my @currsections = ();
+     my @currxlists = ();
+     my $coursecode = $$settings{'internal.coursecode'};
+     if ($$settings{'internal.sectionnums'} ne '') {
+         @currsections = split(/,/,$$settings{'internal.sectionnums'});
+     }
+     if ($$settings{'internal.crosslistings'} ne '') {
+         @currxlists = split(/,/,$$settings{'internal.crosslistings'});
+     }
+     if (@currxlists > 0) {
+         foreach (@currxlists) {
+             if (m/^([^:]+):(\w*)$/) {
+                 unless (grep/^$1$/,@{$allcourses}) {
+                     push @{$allcourses},$1;
+                     $$LC_code{$1} = $2;
+                 }
+             }
+         }
+     }
+     if (@currsections > 0) {
+         foreach (@currsections) {
+             if (m/^(\w+):(\w*)$/) {
+                 my $sec = $coursecode.$1;
+                 my $lc_sec = $2;
+                 unless (grep/^$sec$/,@{$allcourses}) {
+                     push @{$allcourses},$sec;
+                     $$LC_code{$sec} = $lc_sec;
+                 }
+             }
+         }
+     }
+     return;
+ }
+ sub get_standard_codeitems {
+     return ('Year','Semester','Department','Number','Section');
+ }
+ =pod
+ =head1 Slot Helpers
+ =over 4
+ =item * sorted_slots()
+ Sorts an array of slot names in order of an optional sort key,
+ default sort is by slot start time (earliest first).
+ Inputs:
+ =over 4
+ slotsarr  - Reference to array of unsorted slot names.
+ slots     - Reference to hash of hash, where outer hash keys are slot names.
+ sortkey   - Name of key in inner hash to be sorted on (e.g., starttime).
+ =back
+ Returns:
+ =over 4
+ sorted   - An array of slot names sorted by a specified sort key
+            (default sort key is start time of the slot).
+ =back
+ =cut
+ sub sorted_slots {
+     my ($slotsarr,$slots,$sortkey) = @_;
+     if ($sortkey eq '') {
+         $sortkey = 'starttime';
+     }
+     my @sorted;
+     if ((ref($slotsarr) eq 'ARRAY') && (ref($slots) eq 'HASH')) {
+         @sorted =
+             sort {
+                      if (ref($slots->{$a}) && ref($slots->{$b})) {
+                          return $slots->{$a}{$sortkey} <=> $slots->{$b}{$sortkey}
+                      }
+                      if (ref($slots->{$a})) { return -1;}
+                      if (ref($slots->{$b})) { return 1;}
+                      return 0;
+                  } @{$slotsarr};
+     }
+     return @sorted;
  }
  =pod
- =item * get_unprocessed_cgi($query,$possible_names)
+ =item * get_future_slots()
+ Inputs:
+ =over 4
+ cnum - course number
+ cdom - course domain
+ now - current UNIX time
+ symb - optional symb
+ =back
+ Returns:
+ =over 4
+ sorted_reservable - ref to array of student_schedulable slots currently
+                     reservable, ordered by end date of reservation period.
+ reservable_now - ref to hash of student_schedulable slots currently
+                  reservable.
+     Keys in inner hash are:
+     (a) symb: either blank or symb to which slot use is restricted.
+     (b) endreserve: end date of reservation period.
+     (c) uniqueperiod: start,end dates when slot is to be uniquely
+         selected.
+ sorted_future - ref to array of student_schedulable slots reservable in
+                 the future, ordered by start date of reservation period.
+ future_reservable - ref to hash of student_schedulable slots reservable
+                     in the future.
+     Keys in inner hash are:
+     (a) symb: either blank or symb to which slot use is restricted.
+     (b) startreserve: start date of reservation period.
+     (c) uniqueperiod: start,end dates when slot is to be uniquely
+         selected.
+ =back
+ =cut
+ sub get_future_slots {
+     my ($cnum,$cdom,$now,$symb) = @_;
+     my $map;
+     if ($symb) {
+         ($map) = &Apache::lonnet::decode_symb($symb);
+     }
+     my (%reservable_now,%future_reservable,@sorted_reservable,@sorted_future);
+     my %slots = &Apache::lonnet::get_course_slots($cnum,$cdom);
+     foreach my $slot (keys(%slots)) {
+         next unless($slots{$slot}->{'type'} eq 'schedulable_student');
+         if ($symb) {
+             if ($slots{$slot}->{'symb'} ne '') {
+                 my $canuse;
+                 my %oksymbs;
+                 my @slotsymbs = split(/\s*,\s*/,$slots{$slot}->{'symb'});
+                 map { $oksymbs{$_} = 1; } @slotsymbs;
+                 if ($oksymbs{$symb}) {
+                     $canuse = 1;
+                 } else {
+                     foreach my $item (@slotsymbs) {
+                         if ($item =~ /\.(page|sequence)$/) {
+                             (undef,undef,my $sloturl) = &Apache::lonnet::decode_symb($item);
+                             if (($map ne '') && ($map eq $sloturl)) {
+                                 $canuse = 1;
+                                 last;
+                             }
+                         }
+                     }
+                 }
+                 next unless ($canuse);
+             }
+         }
+         if (($slots{$slot}->{'starttime'} > $now) &&
+             ($slots{$slot}->{'endtime'} > $now)) {
+             if (($slots{$slot}->{'allowedsections'}) || ($slots{$slot}->{'allowedusers'})) {
+                 my $userallowed = 0;
+                 if ($slots{$slot}->{'allowedsections'}) {
+                     my @allowed_sec = split(',',$slots{$slot}->{'allowedsections'});
+                     if (!defined($env{'request.role.sec'})
+                         && grep(/^No section assigned$/,@allowed_sec)) {
+                         $userallowed=1;
+                     } else {
+                         if (grep(/^\Q$env{'request.role.sec'}\E$/,@allowed_sec)) {
+                             $userallowed=1;
+                         }
+                     }
+                     unless ($userallowed) {
+                         if (defined($env{'request.course.groups'})) {
+                             my @groups = split(/:/,$env{'request.course.groups'});
+                             foreach my $group (@groups) {
+                                 if (grep(/^\Q$group\E$/,@allowed_sec)) {
+                                     $userallowed=1;
+                                     last;
+                                 }
+                             }
+                         }
+                     }
+                 }
+                 if ($slots{$slot}->{'allowedusers'}) {
+                     my @allowed_users = split(',',$slots{$slot}->{'allowedusers'});
+                     my $user = $env{'user.name'}.':'.$env{'user.domain'};
+                     if (grep(/^\Q$user\E$/,@allowed_users)) {
+                         $userallowed = 1;
+                     }
+                 }
+                 next unless($userallowed);
+             }
+             my $startreserve = $slots{$slot}->{'startreserve'};
+             my $endreserve = $slots{$slot}->{'endreserve'};
+             my $symb = $slots{$slot}->{'symb'};
+             my $uniqueperiod;
+             if (ref($slots{$slot}->{'uniqueperiod'}) eq 'ARRAY') {
+                 $uniqueperiod = join(',',@{$slots{$slot}->{'uniqueperiod'}});
+             }
+             if (($startreserve < $now) &&
+                 (!$endreserve || $endreserve > $now)) {
+                 my $lastres = $endreserve;
+                 if (!$lastres) {
+                     $lastres = $slots{$slot}->{'starttime'};
+                 }
+                 $reservable_now{$slot} = {
+                                            symb       => $symb,
+                                            endreserve => $lastres,
+                                            uniqueperiod => $uniqueperiod,
+                                          };
+             } elsif (($startreserve > $now) &&
+                      (!$endreserve || $endreserve > $startreserve)) {
+                 $future_reservable{$slot} = {
+                                               symb         => $symb,
+                                               startreserve => $startreserve,
+                                               uniqueperiod => $uniqueperiod,
+                                             };
+             }
+         }
+     }
+     my @unsorted_reservable = keys(%reservable_now);
+     if (@unsorted_reservable > 0) {
+         @sorted_reservable =
+             &sorted_slots(\@unsorted_reservable,\%reservable_now,'endreserve');
+     }
+     my @unsorted_future = keys(%future_reservable);
+     if (@unsorted_future > 0) {
+         @sorted_future =
+             &sorted_slots(\@unsorted_future,\%future_reservable,'startreserve');
+     }
+     return (\@sorted_reservable,\%reservable_now,\@sorted_future,\%future_reservable);
+ }
+ =pod
+ =back
+ =head1 HTTP Helpers
+ =over 4
+ =item * &get_unprocessed_cgi($query,$possible_names)
  Modify the %env hash to contain unprocessed CGI form parameters held in
  $query.  The parameters listed in $possible_names (an array reference),
- Line 3244  will result in $env{'form.uname'} and $e
+ Line 10823  will result in $env{'form.uname'} and $e
  sub get_unprocessed_cgi {
    my ($query,$possible_names)= @_;
    # $Apache::lonxml::debug=1;
-   foreach (split(/&/,$query)) {
+   foreach my $pair (split(/&/,$query)) {
-     my ($name, $value) = split(/=/,$_);
+     my ($name, $value) = split(/=/,$pair);
-     $name = &Apache::lonnet::unescape($name);
+     $name = &unescape($name);
      if (!defined($possible_names) || (grep {$_ eq $name} @$possible_names)) {
        $value =~ tr/+/ /;
        $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
- Line 3257  sub get_unprocessed_cgi {
+ Line 10836  sub get_unprocessed_cgi {
  =pod
- =item * cacheheader()
+ =item * &cacheheader()
  returns cache-controlling header code
- Line 3274  sub cacheheader {
+ Line 10853  sub cacheheader {
  =pod
- =item * no_cache($r)
+ =item * &no_cache($r)
  specifies header code to not have cache
- Line 3292  sub no_cache {
+ Line 10871  sub no_cache {
  sub content_type {
      my ($r,$type,$charset) = @_;
+     if ($r) {
+ 	#  Note that printout.pl calls this with undef for $r.
+ 	&no_cache($r);
+     }
      if ($env{'browser.mathml'} && $type eq 'text/html') { $type='text/xml'; }
      unless ($charset) {
  	$charset=&Apache::lonlocal::current_encoding;
- Line 3306  sub content_type {
+ Line 10889  sub content_type {
  =pod
- =item * add_to_env($name,$value)
+ =item * &add_to_env($name,$value)
  adds $name to the %env hash with value
  $value, if $name already exists, the entry is converted to an array
- Line 3333  sub add_to_env {
+ Line 10916  sub add_to_env {
  =pod
- =item * get_env_multiple($name)
+ =item * &get_env_multiple($name)
  gets $name from the %env hash, it seemlessly handles the cases where multiple
  values may be defined and end up as an array ref.
- Line 3356  sub get_env_multiple {
+ Line 10939  sub get_env_multiple {
      return(@values);
  }
+ # Looks at given dependencies, and returns something depending on the context.
+ # For coursedocs paste, returns (undef, $counter, $numpathchg, \%existing).
+ # For syllabus rewrites, returns (undef, $counter, $numpathchg, \%existing, \%mapping).
+ # For all other contexts, returns ($output, $counter, $numpathchg).
+ # $output: string with the HTML output. Can contain missing dependencies with an upload form, existing dependencies, and dependencies no longer in use.
+ # $counter: integer with the number of existing dependencies when no HTML output is returned, and the number of missing dependencies when an HTML output is returned.
+ # $numpathchg: integer with the number of cleaned up dependency paths.
+ # \%existing: hash reference clean path -> 1 only for existing dependencies.
+ # \%mapping: hash reference clean path -> original path for all dependencies.
+ # @param {string} actionurl - The path to the handler, indicative of the context.
+ # @param {string} state - Can contain HTML with hidden inputs that will be added to the output form.
+ # @param {hash reference} allfiles - List of file info from lonnet::extract_embedded_items
+ # @param {hash reference} codebase - undef, not modified by lonnet::extract_embedded_items ?
+ # @param {hash reference} args - More parameters ! Possible keys: error_on_invalid_names (boolean), ignore_remote_references (boolean), current_path (string), docs_url (string), docs_title (string), context (string)
+ # @return {Array} - array depending on the context (not a reference)
+ sub ask_for_embedded_content {
+     # NOTE: documentation was added afterwards, it could be wrong
+     my ($actionurl,$state,$allfiles,$codebase,$args)=@_;
+     my (%subdependencies,%dependencies,%mapping,%existing,%newfiles,%pathchanges,
+         %currsubfile,%unused,$rem);
+     my $counter = 0;
+     my $numnew = 0;
+     my $numremref = 0;
+     my $numinvalid = 0;
+     my $numpathchg = 0;
+     my $numexisting = 0;
+     my $numunused = 0;
+     my ($output,$upload_output,$toplevel,$url,$udom,$uname,$getpropath,$cdom,$cnum,
+         $fileloc,$filename,$delete_output,$modify_output,$title,$symb,$path,$navmap);
+     my $heading = &mt('Upload embedded files');
+     my $buttontext = &mt('Upload');
+     # fills these variables based on the context:
+     # $navmap, $cdom, $cnum, $udom, $uname, $url, $toplevel, $getpropath,
+     # $path, $fileloc, $title, $rem, $filename
+     if ($env{'request.course.id'}) {
+         if ($actionurl eq '/adm/dependencies') {
+             $navmap = Apache::lonnavmaps::navmap->new();
+         }
+         $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+         $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+     }
+     if (($actionurl eq '/adm/portfolio') ||
+         ($actionurl eq '/adm/coursegrp_portfolio')) {
+         my $current_path='/';
+         if ($env{'form.currentpath'}) {
+             $current_path = $env{'form.currentpath'};
+         }
+         if ($actionurl eq '/adm/coursegrp_portfolio') {
+             $udom = $cdom;
+             $uname = $cnum;
+             $url = '/userfiles/groups/'.$env{'form.group'}.'/portfolio';
+         } else {
+             $udom = $env{'user.domain'};
+             $uname = $env{'user.name'};
+             $url = '/userfiles/portfolio';
+         }
+         $toplevel = $url.'/';
+         $url .= $current_path;
+         $getpropath = 1;
+     } elsif (($actionurl eq '/adm/upload') || ($actionurl eq '/adm/testbank') ||
+              ($actionurl eq '/adm/imsimport')) {
+         my ($udom,$uname,$rest) = ($args->{'current_path'} =~ m{/priv/($match_domain)/($match_username)/?(.*)$});
+         $url = $Apache::lonnet::perlvar{'lonDocRoot'}."/priv/$udom/$uname/";
+         $toplevel = $url;
+         if ($rest ne '') {
+             $url .= $rest;
+         }
+     } elsif ($actionurl eq '/adm/coursedocs') {
+         if (ref($args) eq 'HASH') {
+             $url = $args->{'docs_url'};
+             $toplevel = $url;
+             if ($args->{'context'} eq 'paste') {
+                 ($cdom,$cnum) = ($url =~ m{^\Q/uploaded/\E($match_domain)/($match_courseid)/});
+                 ($path) =
+                     ($toplevel =~ m{^(\Q/uploaded/$cdom/$cnum/\E(?:docs|supplemental)/(?:default|\d+)/\d+)/});
+                 $fileloc = &Apache::lonnet::filelocation('',$toplevel);
+                 $fileloc =~ s{^/}{};
+             }
+         }
+     } elsif ($actionurl eq '/adm/dependencies')  {
+         if ($env{'request.course.id'} ne '') {
+             if (ref($args) eq 'HASH') {
+                 $url = $args->{'docs_url'};
+                 $title = $args->{'docs_title'};
+                 $toplevel = $url;
+                 unless ($toplevel =~ m{^/}) {
+                     $toplevel = "/$url";
+                 }
+                 ($rem) = ($toplevel =~ m{^(.+/)[^/]+$});
+                 if ($toplevel =~ m{^(\Q/uploaded/$cdom/$cnum/portfolio/syllabus\E)}) {
+                     $path = $1;
+                 } else {
+                     ($path) =
+                         ($toplevel =~ m{^(\Q/uploaded/$cdom/$cnum/\E(?:docs|supplemental)/(?:default|\d+)/\d+)/});
+                 }
+                 if ($toplevel=~/^\/*(uploaded|editupload)/) {
+                     $fileloc = $toplevel;
+                     $fileloc=~ s/^\s*(\S+)\s*$/$1/;
+                     my ($udom,$uname,$fname) =
+                         ($fileloc=~ m{^/+(?:uploaded|editupload)/+($match_domain)/+($match_name)/+(.*)$});
+                     $fileloc = propath($udom,$uname).'/userfiles/'.$fname;
+                 } else {
+                     $fileloc = &Apache::lonnet::filelocation('',$toplevel);
+                 }
+                 $fileloc =~ s{^/}{};
+                 ($filename) = ($fileloc =~ m{.+/([^/]+)$});
+                 $heading = &mt('Status of dependencies in [_1]',"$title ($filename)");
+             }
+         }
+     } elsif ($actionurl eq "/public/$cdom/$cnum/syllabus") {
+         $udom = $cdom;
+         $uname = $cnum;
+         $url = "/uploaded/$cdom/$cnum/portfolio/syllabus";
+         $toplevel = $url;
+         $path = $url;
+         $fileloc = &Apache::lonnet::filelocation('',$toplevel).'/';
+         $fileloc =~ s{^/}{};
+     }
+     # parses the dependency paths to get some info
+     # fills $newfiles, $mapping, $subdependencies, $dependencies
+     # $newfiles: hash URL -> 1 for new files or external URLs
+     # (will be completed later)
+     # $mapping:
+     #   for external URLs: external URL -> external URL
+     #   for relative paths: clean path -> original path
+     # $subdependencies: hash clean path -> clean file name -> 1 for relative paths in subdirectories
+     # $dependencies: hash clean or not file name -> 1 for relative paths not in subdirectories
+     foreach my $file (keys(%{$allfiles})) {
+         my $embed_file;
+         if (($path eq "/uploaded/$cdom/$cnum/portfolio/syllabus") && ($file =~ m{^\Q$path/\E(.+)$})) {
+             $embed_file = $1;
+         } else {
+             $embed_file = $file;
+         }
+         my ($absolutepath,$cleaned_file);
+         if ($embed_file =~ m{^\w+://}) {
+             $cleaned_file = $embed_file;
+             $newfiles{$cleaned_file} = 1;
+             $mapping{$cleaned_file} = $embed_file;
+         } else {
+             $cleaned_file = &clean_path($embed_file);
+             if ($embed_file =~ m{^/}) {
+                 $absolutepath = $embed_file;
+             }
+             if ($cleaned_file =~ m{/}) {
+                 my ($path,$fname) = ($cleaned_file =~ m{^(.+)/([^/]*)$});
+                 $path = &check_for_traversal($path,$url,$toplevel);
+                 my $item = $fname;
+                 if ($path ne '') {
+                     $item = $path.'/'.$fname;
+                     $subdependencies{$path}{$fname} = 1;
+                 } else {
+                     $dependencies{$item} = 1;
+                 }
+                 if ($absolutepath) {
+                     $mapping{$item} = $absolutepath;
+                 } else {
+                     $mapping{$item} = $embed_file;
+                 }
+             } else {
+                 $dependencies{$embed_file} = 1;
+                 if ($absolutepath) {
+                     $mapping{$cleaned_file} = $absolutepath;
+                 } else {
+                     $mapping{$cleaned_file} = $embed_file;
+                 }
+             }
+         }
+     }
+     # looks for all existing files in dependency subdirectories (from $subdependencies filled above)
+     # and lists
+     # fills $currsubfile, $pathchanges, $existing, $numexisting, $newfiles, $unused
+     # $currsubfile: hash clean path -> file name -> 1 for all existing files in the path
+     # $pathchanges: hash clean path -> 1 if the file in subdirectory exists and
+     #                                    the path had to be cleaned up
+     # $existing: hash clean path -> 1 if the file exists
+     # $numexisting: number of keys in $existing
+     # $newfiles: updated with clean path -> 1 for files in subdirectories that do not exist
+     # $unused: only for /adm/dependencies, hash clean path -> 1 for existing files in
+     #                                      dependency subdirectories that are
+     #                                      not listed as dependencies, with some exceptions using $rem
+     my $dirptr = 16384;
+     foreach my $path (keys(%subdependencies)) {
+         $currsubfile{$path} = {};
+         if (($actionurl eq '/adm/portfolio') ||
+             ($actionurl eq '/adm/coursegrp_portfolio')) {
+             my ($sublistref,$listerror) =
+                 &Apache::lonnet::dirlist($url.$path,$udom,$uname,$getpropath);
+             if (ref($sublistref) eq 'ARRAY') {
+                 foreach my $line (@{$sublistref}) {
+                     my ($file_name,$rest) = split(/\&/,$line,2);
+                     $currsubfile{$path}{$file_name} = 1;
+                 }
+             }
+         } elsif (($actionurl eq '/adm/upload') || ($actionurl eq '/adm/testbank')) {
+             if (opendir(my $dir,$url.'/'.$path)) {
+                 my @subdir_list = grep(!/^\./,readdir($dir));
+                 map {$currsubfile{$path}{$_} = 1;} @subdir_list;
+             }
+         } elsif (($actionurl eq '/adm/dependencies') ||
+                  (($actionurl eq '/adm/coursedocs') && (ref($args) eq 'HASH') &&
+                   ($args->{'context'} eq 'paste')) ||
+                  ($actionurl eq "/public/$cdom/$cnum/syllabus")) {
+             if ($env{'request.course.id'} ne '') {
+                 my $dir;
+                 if ($actionurl eq "/public/$cdom/$cnum/syllabus") {
+                     $dir = $fileloc;
+                 } else {
+                     ($dir) = ($fileloc =~ m{^(.+/)[^/]+$});
+                 }
+                 if ($dir ne '') {
+                     my ($sublistref,$listerror) =
+                         &Apache::lonnet::dirlist($dir.$path,$cdom,$cnum,$getpropath,undef,'/');
+                     if (ref($sublistref) eq 'ARRAY') {
+                         foreach my $line (@{$sublistref}) {
+                             my ($file_name,$dom,undef,$testdir,undef,undef,undef,undef,$size,
+                                 undef,$mtime)=split(/\&/,$line,12);
+                             unless (($testdir&$dirptr) ||
+                                     ($file_name =~ /^\.\.?$/)) {
+                                 $currsubfile{$path}{$file_name} = [$size,$mtime];
+                             }
+                         }
+                     }
+                 }
+             }
+         }
+         foreach my $file (keys(%{$subdependencies{$path}})) {
+             if (exists($currsubfile{$path}{$file})) {
+                 my $item = $path.'/'.$file;
+                 unless ($mapping{$item} eq $item) {
+                     $pathchanges{$item} = 1;
+                 }
+                 $existing{$item} = 1;
+                 $numexisting ++;
+             } else {
+                 $newfiles{$path.'/'.$file} = 1;
+             }
+         }
+         if ($actionurl eq '/adm/dependencies') {
+             foreach my $path (keys(%currsubfile)) {
+                 if (ref($currsubfile{$path}) eq 'HASH') {
+                     foreach my $file (keys(%{$currsubfile{$path}})) {
+                          unless ($subdependencies{$path}{$file}) {
+                              next if (($rem ne '') &&
+                                       (($env{"httpref.$rem"."$path/$file"} ne '') ||
+                                        (ref($navmap) &&
+                                        (($navmap->getResourceByUrl($rem."$path/$file") ne '') ||
+                                         (($file =~ /^(.*\.s?html?)\.bak$/i) &&
+                                          ($navmap->getResourceByUrl($rem."$path/$1")))))));
+                              $unused{$path.'/'.$file} = 1;
+                          }
+                     }
+                 }
+             }
+         }
+     }
+     # fills $currfile, hash file name -> 1 or [$size,$mtime]
+     # for files in $url or $fileloc (target directory) in some contexts
+     my %currfile;
+     if (($actionurl eq '/adm/portfolio') ||
+         ($actionurl eq '/adm/coursegrp_portfolio')) {
+         my ($dirlistref,$listerror) =
+             &Apache::lonnet::dirlist($url,$udom,$uname,$getpropath);
+         if (ref($dirlistref) eq 'ARRAY') {
+             foreach my $line (@{$dirlistref}) {
+                 my ($file_name,$rest) = split(/\&/,$line,2);
+                 $currfile{$file_name} = 1;
+             }
+         }
+     } elsif (($actionurl eq '/adm/upload') || ($actionurl eq '/adm/testbank')) {
+         if (opendir(my $dir,$url)) {
+             my @dir_list = grep(!/^\./,readdir($dir));
+             map {$currfile{$_} = 1;} @dir_list;
+         }
+     } elsif (($actionurl eq '/adm/dependencies') ||
+              (($actionurl eq '/adm/coursedocs') && (ref($args) eq 'HASH') &&
+               ($args->{'context'} eq 'paste')) ||
+              ($actionurl eq "/public/$cdom/$cnum/syllabus")) {
+         if ($env{'request.course.id'} ne '') {
+             my ($dir) = ($fileloc =~ m{^(.+/)[^/]+$});
+             if ($dir ne '') {
+                 my ($dirlistref,$listerror) =
+                     &Apache::lonnet::dirlist($dir,$cdom,$cnum,$getpropath,undef,'/');
+                 if (ref($dirlistref) eq 'ARRAY') {
+                     foreach my $line (@{$dirlistref}) {
+                         my ($file_name,$dom,undef,$testdir,undef,undef,undef,undef,
+                             $size,undef,$mtime)=split(/\&/,$line,12);
+                         unless (($testdir&$dirptr) ||
+                                 ($file_name =~ /^\.\.?$/)) {
+                             $currfile{$file_name} = [$size,$mtime];
+                         }
+                     }
+                 }
+             }
+         }
+     }
+     # updates $pathchanges, $existing, $numexisting, $newfiles and $unused for files that
+     # are not in subdirectories, using $currfile
+     foreach my $file (keys(%dependencies)) {
+         if (exists($currfile{$file})) {
+             unless ($mapping{$file} eq $file) {
+                 $pathchanges{$file} = 1;
+             }
+             $existing{$file} = 1;
+             $numexisting ++;
+         } else {
+             $newfiles{$file} = 1;
+         }
+     }
+     foreach my $file (keys(%currfile)) {
+         unless (($file eq $filename) ||
+                 ($file eq $filename.'.bak') ||
+                 ($dependencies{$file})) {
+             if ($actionurl eq '/adm/dependencies') {
+                 unless ($toplevel =~ m{^\Q/uploaded/$cdom/$cnum/portfolio/syllabus\E}) {
+                     next if (($rem ne '') &&
+                              (($env{"httpref.$rem".$file} ne '') ||
+                               (ref($navmap) &&
+                               (($navmap->getResourceByUrl($rem.$file) ne '') ||
+                                (($file =~ /^(.*\.s?html?)\.bak$/i) &&
+                                 ($navmap->getResourceByUrl($rem.$1)))))));
+                 }
+             }
+             $unused{$file} = 1;
+         }
+     }
+     # returns some results for coursedocs paste and syllabus rewrites ($output is undef)
+     if (($actionurl eq '/adm/coursedocs') && (ref($args) eq 'HASH') &&
+         ($args->{'context'} eq 'paste')) {
+         $counter = scalar(keys(%existing));
+         $numpathchg = scalar(keys(%pathchanges));
+         return ($output,$counter,$numpathchg,\%existing);
+     } elsif (($actionurl eq "/public/$cdom/$cnum/syllabus") &&
+              (ref($args) eq 'HASH') && ($args->{'context'} eq 'rewrites')) {
+         $counter = scalar(keys(%existing));
+         $numpathchg = scalar(keys(%pathchanges));
+         return ($output,$counter,$numpathchg,\%existing,\%mapping);
+     }
+     # returns HTML otherwise, with dependency results and to ask for more uploads
+     # $upload_output: missing dependencies (with upload form)
+     # $modify_output: uploaded dependencies (in use)
+     # $delete_output: files no longer in use (unused files are not listed for londocs, bug?)
+     foreach my $embed_file (sort {lc($a) cmp lc($b)} keys(%newfiles)) {
+         if ($actionurl eq '/adm/dependencies') {
+             next if ($embed_file =~ m{^\w+://});
+         }
+         $upload_output .= &start_data_table_row().
+                           '<td valign="top"><img src="'.&icon($embed_file).'" />&nbsp;'.
+                           '<span class="LC_filename">'.$embed_file.'</span>';
+         unless ($mapping{$embed_file} eq $embed_file) {
+             $upload_output .= '<br /><span class="LC_info" style="font-size:smaller;">'.
+                               &mt('changed from: [_1]',$mapping{$embed_file}).'</span>';
+         }
+         $upload_output .= '</td>';
+         if ($args->{'ignore_remote_references'} && $embed_file =~ m{^\w+://}) {
+             $upload_output.='<td align="right">'.
+                             '<span class="LC_info LC_fontsize_medium">'.
+                             &mt("URL points to web address").'</span>';
+             $numremref++;
+         } elsif ($args->{'error_on_invalid_names'}
+             && $embed_file ne &Apache::lonnet::clean_filename($embed_file,{'keep_path' => 1,})) {
+             $upload_output.='<td align="right"><span class="LC_warning">'.
+                             &mt('Invalid characters').'</span>';
+             $numinvalid++;
+         } else {
+             $upload_output .= '<td>'.
+                               &embedded_file_element('upload_embedded',$counter,
+                                                      $embed_file,\%mapping,
+                                                      $allfiles,$codebase,'upload');
+             $counter ++;
+             $numnew ++;
+         }
+         $upload_output .= '</td>'.&Apache::loncommon::end_data_table_row()."\n";
+     }
+     foreach my $embed_file (sort {lc($a) cmp lc($b)} keys(%existing)) {
+         if ($actionurl eq '/adm/dependencies') {
+             my ($size,$mtime) = &get_dependency_details(\%currfile,\%currsubfile,$embed_file);
+             $modify_output .= &start_data_table_row().
+                               '<td><a href="'.$path.'/'.$embed_file.'" style="text-decoration:none;">'.
+                               '<img src="'.&icon($embed_file).'" border="0" />'.
+                               '&nbsp;<span class="LC_filename">'.$embed_file.'</span></a></td>'.
+                               '<td>'.$size.'</td>'.
+                               '<td>'.$mtime.'</td>'.
+                               '<td><label><input type="checkbox" name="mod_upload_dep" '.
+                               'onclick="toggleBrowse('."'$counter'".')" id="mod_upload_dep_'.
+                               $counter.'" value="'.$counter.'" />'.&mt('Yes').'</label>'.
+                               '<div id="moduploaddep_'.$counter.'" style="display:none;">'.
+                               &embedded_file_element('upload_embedded',$counter,
+                                                      $embed_file,\%mapping,
+                                                      $allfiles,$codebase,'modify').
+                               '</div></td>'.
+                               &end_data_table_row()."\n";
+             $counter ++;
+         } else {
+             $upload_output .= &start_data_table_row().
+                               '<td valign="top"><img src="'.&icon($embed_file).'" />&nbsp;'.
+                               '<span class="LC_filename">'.$embed_file.'</span></td>'.
+                               '<td align="right"><span class="LC_info LC_fontsize_medium">'.&mt('Already exists').'</span></td>'.
+                               &Apache::loncommon::end_data_table_row()."\n";
+         }
+     }
+     my $delidx = $counter;
+     foreach my $oldfile (sort {lc($a) cmp lc($b)} keys(%unused)) {
+         my ($size,$mtime) = &get_dependency_details(\%currfile,\%currsubfile,$oldfile);
+         $delete_output .= &start_data_table_row().
+                           '<td><img src="'.&icon($oldfile).'" />'.
+                           '&nbsp;<span class="LC_filename">'.$oldfile.'</span></td>'.
+                           '<td>'.$size.'</td>'.
+                           '<td>'.$mtime.'</td>'.
+                           '<td><label><input type="checkbox" name="del_upload_dep" '.
+                           ' value="'.$delidx.'" />'.&mt('Yes').'</label>'.
+                           &embedded_file_element('upload_embedded',$delidx,
+                                                  $oldfile,\%mapping,$allfiles,
+                                                  $codebase,'delete').'</td>'.
+                           &end_data_table_row()."\n";
+         $numunused ++;
+         $delidx ++;
+     }
+     if ($upload_output) {
+         $upload_output = &start_data_table().
+                          $upload_output.
+                          &end_data_table()."\n";
+     }
+     if ($modify_output) {
+         $modify_output = &start_data_table().
+                          &start_data_table_header_row().
+                          '<th>'.&mt('File').'</th>'.
+                          '<th>'.&mt('Size (KB)').'</th>'.
+                          '<th>'.&mt('Modified').'</th>'.
+                          '<th>'.&mt('Upload replacement?').'</th>'.
+                          &end_data_table_header_row().
+                          $modify_output.
+                          &end_data_table()."\n";
+     }
+     if ($delete_output) {
+         $delete_output = &start_data_table().
+                          &start_data_table_header_row().
+                          '<th>'.&mt('File').'</th>'.
+                          '<th>'.&mt('Size (KB)').'</th>'.
+                          '<th>'.&mt('Modified').'</th>'.
+                          '<th>'.&mt('Delete?').'</th>'.
+                          &end_data_table_header_row().
+                          $delete_output.
+                          &end_data_table()."\n";
+     }
+     my $applies = 0;
+     if ($numremref) {
+         $applies ++;
+     }
+     if ($numinvalid) {
+         $applies ++;
+     }
+     if ($numexisting) {
+         $applies ++;
+     }
+     if ($counter || $numunused) {
+         $output = '<form name="upload_embedded" action="'.$actionurl.'"'.
+                   ' method="post" enctype="multipart/form-data">'."\n".
+                   $state.'<h3>'.$heading.'</h3>';
+         if ($actionurl eq '/adm/dependencies') {
+             if ($numnew) {
+                 $output .= '<h4>'.&mt('Missing dependencies').'</h4>'.
+                            '<p>'.&mt('The following files need to be uploaded.').'</p>'."\n".
+                            $upload_output.'<br />'."\n";
+             }
+             if ($numexisting) {
+                 $output .= '<h4>'.&mt('Uploaded dependencies (in use)').'</h4>'.
+                            '<p>'.&mt('Upload a new file to replace the one currently in use.').'</p>'."\n".
+                            $modify_output.'<br />'."\n";
+                            $buttontext = &mt('Save changes');
+             }
+             if ($numunused) {
+                 $output .= '<h4>'.&mt('Unused files').'</h4>'.
+                            '<p>'.&mt('The following uploaded files are no longer used.').'</p>'."\n".
+                            $delete_output.'<br />'."\n";
+                            $buttontext = &mt('Save changes');
+             }
+         } else {
+             $output .= $upload_output.'<br />'."\n";
+         }
+         $output .= '<input type ="hidden" name="number_embedded_items" value="'.
+                    $counter.'" />'."\n";
+         if ($actionurl eq '/adm/dependencies') {
+             $output .= '<input type ="hidden" name="number_newemb_items" value="'.
+                        $numnew.'" />'."\n";
+         } elsif ($actionurl eq '') {
+             $output .=  '<input type="hidden" name="phase" value="three" />';
+         }
+     } elsif ($applies) {
+         $output = '<b>'.&mt('Referenced files').'</b>:<br />';
+         if ($applies > 1) {
+             $output .=
+                 &mt('No dependencies need to be uploaded, as one of the following applies to each reference:').'<ul>';
+             if ($numremref) {
+                 $output .= '<li>'.&mt('reference is to a URL which points to another server').'</li>'."\n";
+             }
+             if ($numinvalid) {
+                 $output .= '<li>'.&mt('reference is to file with a name containing invalid characters').'</li>'."\n";
+             }
+             if ($numexisting) {
+                 $output .= '<li>'.&mt('reference is to an existing file at the specified location').'</li>'."\n";
+             }
+             $output .= '</ul><br />';
+         } elsif ($numremref) {
+             $output .= '<p>'.&mt('None to upload, as all references are to URLs pointing to another server.').'</p>';
+         } elsif ($numinvalid) {
+             $output .= '<p>'.&mt('None to upload, as all references are to files with names containing invalid characters.').'</p>';
+         } elsif ($numexisting) {
+             $output .= '<p>'.&mt('None to upload, as all references are to existing files.').'</p>';
+         }
+         $output .= $upload_output.'<br />';
+     }
+     my ($pathchange_output,$chgcount);
+     $chgcount = $counter;
+     if (keys(%pathchanges) > 0) {
+         foreach my $embed_file (sort {lc($a) cmp lc($b)} keys(%pathchanges)) {
+             if ($counter) {
+                 $output .= &embedded_file_element('pathchange',$chgcount,
+                                                   $embed_file,\%mapping,
+                                                   $allfiles,$codebase,'change');
+             } else {
+                 $pathchange_output .=
+                     &start_data_table_row().
+                     '<td><input type ="checkbox" name="namechange" value="'.
+                     $chgcount.'" checked="checked" /></td>'.
+                     '<td>'.$mapping{$embed_file}.'</td>'.
+                     '<td>'.$embed_file.
+                     &embedded_file_element('pathchange',$numpathchg,$embed_file,
+                                            \%mapping,$allfiles,$codebase,'change').
+                     '</td>'.&end_data_table_row();
+             }
+             $numpathchg ++;
+             $chgcount ++;
+         }
+     }
+     if (($counter) || ($numunused)) {
+         if ($numpathchg) {
+             $output .= '<input type ="hidden" name="number_pathchange_items" value="'.
+                        $numpathchg.'" />'."\n";
+         }
+         if (($actionurl eq '/adm/upload') || ($actionurl eq '/adm/testbank') ||
+             ($actionurl eq '/adm/imsimport')) {
+             $output .= '<input type="hidden" name="phase" value="three" />'."\n";
+         } elsif ($actionurl eq '/adm/portfolio' || $actionurl eq '/adm/coursegrp_portfolio') {
+             $output .= '<input type="hidden" name="action" value="upload_embedded" />';
+         } elsif ($actionurl eq '/adm/dependencies') {
+             $output .= '<input type="hidden" name="action" value="process_changes" />';
+         }
+         $output .= '<input type ="submit" value="'.$buttontext.'" />'."\n".'</form>'."\n";
+     } elsif ($numpathchg) {
+         my %pathchange = ();
+         $output .= &modify_html_form('pathchange',$actionurl,$state,\%pathchange,$pathchange_output);
+         if (($actionurl eq '/adm/portfolio') || ($actionurl eq '/adm/coursegrp_portfolio')) {
+             $output .= '<p>'.&mt('or').'</p>';
+         }
+     }
+     return ($output,$counter,$numpathchg);
+ }
  =pod
- =back
+ =item * clean_path($name)
+ Performs clean-up of directories, subdirectories and filename in an
+ embedded object, referenced in an HTML file which is being uploaded
+ to a course or portfolio, where
+ "Upload embedded images/multimedia files if HTML file" checkbox was
+ checked.
+ Clean-up is similar to replacements in lonnet::clean_filename()
+ except each / between sub-directory and next level is preserved.
+ =cut
+ sub clean_path {
+     my ($embed_file) = @_;
+     $embed_file =~s{^/+}{};
+     my @contents;
+     if ($embed_file =~ m{/}) {
+         @contents = split(/\//,$embed_file);
+     } else {
+         @contents = ($embed_file);
+     }
+     my $lastidx = scalar(@contents)-1;
+     for (my $i=0; $i<=$lastidx; $i++) {
+         $contents[$i]=~s{\\}{/}g;
+         $contents[$i]=~s/\s+/\_/g;
+         $contents[$i]=~s{[^/\w\.\-]}{}g;
+         if ($i == $lastidx) {
+             $contents[$i]=~s/\.(\d+)(?=\.)/_$1/g;
+         }
+     }
+     if ($lastidx > 0) {
+         return join('/',@contents);
+     } else {
+         return $contents[0];
+     }
+ }
+ sub embedded_file_element {
+     my ($context,$num,$embed_file,$mapping,$allfiles,$codebase,$type) = @_;
+     return unless ((ref($mapping) eq 'HASH') && (ref($allfiles) eq 'HASH') &&
+                    (ref($codebase) eq 'HASH'));
+     my $output;
+     if (($context eq 'upload_embedded') && ($type ne 'delete')) {
+        $output = '<input name="embedded_item_'.$num.'" type="file" value="" />'."\n";
+     }
+     $output .= '<input name="embedded_orig_'.$num.'" type="hidden" value="'.
+                &escape($embed_file).'" />';
+     unless (($context eq 'upload_embedded') &&
+             ($mapping->{$embed_file} eq $embed_file)) {
+         $output .='
+         <input name="embedded_ref_'.$num.'" type="hidden" value="'.&escape($mapping->{$embed_file}).'" />';
+     }
+     my $attrib;
+     if (ref($allfiles->{$mapping->{$embed_file}}) eq 'ARRAY') {
+         $attrib = &escape(join(':',@{$allfiles->{$mapping->{$embed_file}}}));
+     }
+     $output .=
+         "\n\t\t".
+         '<input name="embedded_attrib_'.$num.'" type="hidden" value="'.
+         $attrib.'" />';
+     if (exists($codebase->{$mapping->{$embed_file}})) {
+         $output .=
+             "\n\t\t".
+             '<input name="codebase_'.$num.'" type="hidden" value="'.
+             &escape($codebase->{$mapping->{$embed_file}}).'" />';
+     }
+     return $output;
+ }
+ sub get_dependency_details {
+     my ($currfile,$currsubfile,$embed_file) = @_;
+     my ($size,$mtime,$showsize,$showmtime);
+     if ((ref($currfile) eq 'HASH') && (ref($currsubfile))) {
+         if ($embed_file =~ m{/}) {
+             my ($path,$fname) = split(/\//,$embed_file);
+             if (ref($currsubfile->{$path}{$fname}) eq 'ARRAY') {
+                 ($size,$mtime) = @{$currsubfile->{$path}{$fname}};
+             }
+         } else {
+             if (ref($currfile->{$embed_file}) eq 'ARRAY') {
+                 ($size,$mtime) = @{$currfile->{$embed_file}};
+             }
+         }
+         $showsize = $size/1024.0;
+         $showsize = sprintf("%.1f",$showsize);
+         if ($mtime > 0) {
+             $showmtime = &Apache::lonlocal::locallocaltime($mtime);
+         }
+     }
+     return ($showsize,$showmtime);
+ }
+ sub ask_embedded_js {
+     return <<"END";
+ <script type="text/javascript"">
+ // <![CDATA[
+ function toggleBrowse(counter) {
+     var chkboxid = document.getElementById('mod_upload_dep_'+counter);
+     var fileid = document.getElementById('embedded_item_'+counter);
+     var uploaddivid = document.getElementById('moduploaddep_'+counter);
+     if (chkboxid.checked == true) {
+         uploaddivid.style.display='block';
+     } else {
+         uploaddivid.style.display='none';
+         fileid.value = '';
+     }
+ }
+ // ]]>
+ </script>
+ END
+ }
+ sub upload_embedded {
+     my ($context,$dirpath,$uname,$udom,$dir_root,$url_root,$group,$disk_quota,
+         $current_disk_usage,$hiddenstate,$actionurl) = @_;
+     my (%pathchange,$output,$modifyform,$footer,$returnflag);
+     for (my $i=0; $i<$env{'form.number_embedded_items'}; $i++) {
+         next if (!exists($env{'form.embedded_item_'.$i.'.filename'}));
+         my $orig_uploaded_filename =
+             $env{'form.embedded_item_'.$i.'.filename'};
+         foreach my $type ('orig','ref','attrib','codebase') {
+             if ($env{'form.embedded_'.$type.'_'.$i} ne '') {
+                 $env{'form.embedded_'.$type.'_'.$i} =
+                     &unescape($env{'form.embedded_'.$type.'_'.$i});
+             }
+         }
+         my ($path,$fname) =
+             ($env{'form.embedded_orig_'.$i} =~ m{(.*/)([^/]*)});
+         # no path, whole string is fname
+         if (!$fname) { $fname = $env{'form.embedded_orig_'.$i} };
+         $fname = &Apache::lonnet::clean_filename($fname);
+         # See if there is anything left
+         next if ($fname eq '');
+         # Check if file already exists as a file or directory.
+         my ($state,$msg);
+         if ($context eq 'portfolio') {
+             my $port_path = $dirpath;
+             if ($group ne '') {
+                 $port_path = "groups/$group/$port_path";
+             }
+             ($state,$msg) = &check_for_upload($env{'form.currentpath'}.$path,
+                                               $fname,$group,'embedded_item_'.$i,
+                                               $dir_root,$port_path,$disk_quota,
+                                               $current_disk_usage,$uname,$udom);
+             if ($state eq 'will_exceed_quota'
+                 || $state eq 'file_locked') {
+                 $output .= $msg;
+                 next;
+             }
+         } elsif (($context eq 'author') || ($context eq 'testbank')) {
+             ($state,$msg) = &check_for_existing($path,$fname,'embedded_item_'.$i);
+             if ($state eq 'exists') {
+                 $output .= $msg;
+                 next;
+             }
+         }
+         # Check if extension is valid
+         if (($fname =~ /\.(\w+)$/) &&
+             (&Apache::loncommon::fileembstyle($1) eq 'hdn')) {
+             $output .= &mt('Invalid file extension ([_1]) - reserved for internal use.',$1)
+                       .' '.&mt('Rename the file with a different extension and re-upload.').'<br />';
+             next;
+         } elsif (($fname =~ /\.(\w+)$/) &&
+                  (!defined(&Apache::loncommon::fileembstyle($1)))) {
+             $output .= &mt('Unrecognized file extension ([_1]) - rename the file with a proper extension and re-upload.',$1).'<br />';
+             next;
+         } elsif ($fname=~/\.(\d+)\.(\w+)$/) {
+             $output .= &mt('Filename not allowed - rename the file to remove the number immediately before the file extension([_1]) and re-upload.',$2).'<br />';
+             next;
+         }
+         $env{'form.embedded_item_'.$i.'.filename'}=$fname;
+         my $subdir = $path;
+         $subdir =~ s{/+$}{};
+         if ($context eq 'portfolio') {
+             my $result;
+             if ($state eq 'existingfile') {
+                 $result=
+                     &Apache::lonnet::userfileupload('embedded_item_'.$i,'existingfile',
+                                                     $dirpath.$env{'form.currentpath'}.$subdir);
+             } else {
+                 $result=
+                     &Apache::lonnet::userfileupload('embedded_item_'.$i,'',
+                                                     $dirpath.
+                                                     $env{'form.currentpath'}.$subdir);
+                 if ($result !~ m|^/uploaded/|) {
+                     $output .= '<span class="LC_error">'
+                                .&mt('An error occurred ([_1]) while trying to upload [_2] for embedded element [_3].'
+                                ,$result,$orig_uploaded_filename,$env{'form.embedded_orig_'.$i})
+                                .'</span><br />';
+                     next;
+                 } else {
+                     $output .= &mt('Uploaded [_1]','<span class="LC_filename">'.
+                                $path.$fname.'</span>').'<br />';
+                 }
+             }
+         } elsif (($context eq 'coursedoc') || ($context eq 'syllabus')) {
+             my $extendedsubdir = $dirpath.'/'.$subdir;
+             $extendedsubdir =~ s{/+$}{};
+             my $result =
+                 &Apache::lonnet::userfileupload('embedded_item_'.$i,$context,$extendedsubdir);
+             if ($result !~ m|^/uploaded/|) {
+                 $output .= '<span class="LC_error">'
+                            .&mt('An error occurred ([_1]) while trying to upload [_2] for embedded element [_3].'
+                            ,$result,$orig_uploaded_filename,$env{'form.embedded_orig_'.$i})
+                            .'</span><br />';
+                     next;
+             } else {
+                 $output .= &mt('Uploaded [_1]','<span class="LC_filename">'.
+                            $path.$fname.'</span>').'<br />';
+                 if ($context eq 'syllabus') {
+                     &Apache::lonnet::make_public_indefinitely($result);
+                 }
+             }
+         } else {
+ # Save the file
+             my $target = $env{'form.embedded_item_'.$i};
+             my $fullpath = $dir_root.$dirpath.'/'.$path;
+             my $dest = $fullpath.$fname;
+             my $url = $url_root.$dirpath.'/'.$path.$fname;
+             my @parts=split(/\//,"$dirpath/$path");
+             my $count;
+             my $filepath = $dir_root;
+             foreach my $subdir (@parts) {
+                 $filepath .= "/$subdir";
+                 if (!-e $filepath) {
+                     mkdir($filepath,0770);
+                 }
+             }
+             my $fh;
+             if (!open($fh,'>'.$dest)) {
+                 &Apache::lonnet::logthis('Failed to create '.$dest);
+                 $output .= '<span class="LC_error">'.
+                            &mt('An error occurred while trying to upload [_1] for embedded element [_2].',
+                                $orig_uploaded_filename,$env{'form.embedded_orig_'.$i}).
+                            '</span><br />';
+             } else {
+                 if (!print $fh $env{'form.embedded_item_'.$i}) {
+                     &Apache::lonnet::logthis('Failed to write to '.$dest);
+                     $output .= '<span class="LC_error">'.
+                               &mt('An error occurred while writing the file [_1] for embedded element [_2].',
+                                   $orig_uploaded_filename,$env{'form.embedded_orig_'.$i}).
+                               '</span><br />';
+                 } else {
+                     $output .= &mt('Uploaded [_1]','<span class="LC_filename">'.
+                                $url.'</span>').'<br />';
+                     unless ($context eq 'testbank') {
+                         $footer .= &mt('View embedded file: [_1]',
+                                        '<a href="'.$url.'">'.$fname.'</a>').'<br />';
+                     }
+                 }
+                 close($fh);
+             }
+         }
+         if ($env{'form.embedded_ref_'.$i}) {
+             $pathchange{$i} = 1;
+         }
+     }
+     if ($output) {
+         $output = '<p>'.$output.'</p>';
+     }
+     $output .= &modify_html_form('upload_embedded',$actionurl,$hiddenstate,\%pathchange);
+     $returnflag = 'ok';
+     my $numpathchgs = scalar(keys(%pathchange));
+     if ($numpathchgs > 0) {
+         if ($context eq 'portfolio') {
+             $output .= '<p>'.&mt('or').'</p>';
+         } elsif ($context eq 'testbank') {
+             $output .=  '<p>'.&mt('Or [_1]continue[_2] the testbank import without modifying the reference(s).',
+                                   '<a href="javascript:document.testbankForm.submit();">','</a>').'</p>';
+             $returnflag = 'modify_orightml';
+         }
+     }
+     return ($output.$footer,$returnflag,$numpathchgs);
+ }
+ sub modify_html_form {
+     my ($context,$actionurl,$hiddenstate,$pathchange,$pathchgtable) = @_;
+     my $end = 0;
+     my $modifyform;
+     if ($context eq 'upload_embedded') {
+         return unless (ref($pathchange) eq 'HASH');
+         if ($env{'form.number_embedded_items'}) {
+             $end += $env{'form.number_embedded_items'};
+         }
+         if ($env{'form.number_pathchange_items'}) {
+             $end += $env{'form.number_pathchange_items'};
+         }
+         if ($end) {
+             for (my $i=0; $i<$end; $i++) {
+                 if ($i < $env{'form.number_embedded_items'}) {
+                     next unless($pathchange->{$i});
+                 }
+                 $modifyform .=
+                     &start_data_table_row().
+                     '<td><input type ="checkbox" name="namechange" value="'.$i.'" '.
+                     'checked="checked" /></td>'.
+                     '<td>'.$env{'form.embedded_ref_'.$i}.
+                     '<input type="hidden" name="embedded_ref_'.$i.'" value="'.
+                     &escape($env{'form.embedded_ref_'.$i}).'" />'.
+                     '<input type="hidden" name="embedded_codebase_'.$i.'" value="'.
+                     &escape($env{'form.embedded_codebase_'.$i}).'" />'.
+                     '<input type="hidden" name="embedded_attrib_'.$i.'" value="'.
+                     &escape($env{'form.embedded_attrib_'.$i}).'" /></td>'.
+                     '<td>'.$env{'form.embedded_orig_'.$i}.
+                     '<input type="hidden" name="embedded_orig_'.$i.'" value="'.
+                     &escape($env{'form.embedded_orig_'.$i}).'" /></td>'.
+                     &end_data_table_row();
+             }
+         }
+     } else {
+         $modifyform = $pathchgtable;
+         if (($actionurl eq '/adm/upload') || ($actionurl eq '/adm/testbank')) {
+             $hiddenstate .= '<input type="hidden" name="phase" value="four" />';
+         } elsif (($actionurl eq '/adm/portfolio') || ($actionurl eq '/adm/coursegrp_portfolio')) {
+             $hiddenstate .= '<input type="hidden" name="action" value="modify_orightml" />';
+         }
+     }
+     if ($modifyform) {
+         if ($actionurl eq '/adm/dependencies') {
+             $hiddenstate .= '<input type="hidden" name="action" value="modifyhrefs" />';
+         }
+         return '<h3>'.&mt('Changes in content of HTML file required').'</h3>'."\n".
+                '<p>'.&mt('Changes need to be made to the reference(s) used for one or more of the dependencies, if your HTML file is to work correctly:').'<ol>'."\n".
+                '<li>'.&mt('For consistency between the reference(s) and the location of the corresponding stored file within LON-CAPA.').'</li>'."\n".
+                '<li>'.&mt('To change absolute paths to relative paths, or replace directory traversal via "../" within the original reference.').'</li>'."\n".
+                '</ol></p>'."\n".'<p>'.
+                &mt('LON-CAPA can make the required changes to your HTML file.').'</p>'."\n".
+                '<form method="post" name="refchanger" action="'.$actionurl.'">'.
+                &start_data_table()."\n".
+                &start_data_table_header_row().
+                '<th>'.&mt('Change?').'</th>'.
+                '<th>'.&mt('Current reference').'</th>'.
+                '<th>'.&mt('Required reference').'</th>'.
+                &end_data_table_header_row()."\n".
+                $modifyform.
+                &end_data_table().'<br />'."\n".$hiddenstate.
+                '<input type="submit" name="pathchanges" value="'.&mt('Modify HTML file').'" />'.
+                '</form>'."\n";
+     }
+     return;
+ }
+ sub modify_html_refs {
+     my ($context,$dirpath,$uname,$udom,$dir_root,$url) = @_;
+     my $container;
+     if ($context eq 'portfolio') {
+         $container = $env{'form.container'};
+     } elsif ($context eq 'coursedoc') {
+         $container = $env{'form.primaryurl'};
+     } elsif ($context eq 'manage_dependencies') {
+         (undef,undef,$container) = &Apache::lonnet::decode_symb($env{'form.symb'});
+         $container = "/$container";
+     } elsif ($context eq 'syllabus') {
+         $container = $url;
+     } else {
+         $container = $Apache::lonnet::perlvar{'lonDocRoot'}.$env{'form.filename'};
+     }
+     my (%allfiles,%codebase,$output,$content);
+     my @changes = &get_env_multiple('form.namechange');
+     unless ((@changes > 0) || ($context eq 'syllabus')) {
+         if (wantarray) {
+             return ('',0,0);
+         } else {
+             return;
+         }
+     }
+     if (($context eq 'portfolio') || ($context eq 'coursedoc') ||
+         ($context eq 'manage_dependencies') || ($context eq 'syllabus')) {
+         unless ($container =~ m{^/uploaded/\Q$udom\E/\Q$uname\E/}) {
+             if (wantarray) {
+                 return ('',0,0);
+             } else {
+                 return;
+             }
+         }
+         $content = &Apache::lonnet::getfile($container);
+         if ($content eq '-1') {
+             if (wantarray) {
+                 return ('',0,0);
+             } else {
+                 return;
+             }
+         }
+     } else {
+         unless ($container =~ /^\Q$dir_root\E/) {
+             if (wantarray) {
+                 return ('',0,0);
+             } else {
+                 return;
+             }
+         }
+         if (open(my $fh,"<$container")) {
+             $content = join('', <$fh>);
+             close($fh);
+         } else {
+             if (wantarray) {
+                 return ('',0,0);
+             } else {
+                 return;
+             }
+         }
+     }
+     my ($count,$codebasecount) = (0,0);
+     my $mm = new File::MMagic;
+     my $mime_type = $mm->checktype_contents($content);
+     if ($mime_type eq 'text/html') {
+         my $parse_result =
+             &Apache::lonnet::extract_embedded_items($container,\%allfiles,
+                                                     \%codebase,\$content);
+         if ($parse_result eq 'ok') {
+             foreach my $i (@changes) {
+                 my $orig = &unescape($env{'form.embedded_orig_'.$i});
+                 my $ref = &unescape($env{'form.embedded_ref_'.$i});
+                 if ($allfiles{$ref}) {
+                     my $newname =  $orig;
+                     my ($attrib_regexp,$codebase);
+                     $attrib_regexp = &unescape($env{'form.embedded_attrib_'.$i});
+                     if ($attrib_regexp =~ /:/) {
+                         $attrib_regexp =~ s/\:/|/g;
+                     }
+                     if ($content =~ m{($attrib_regexp\s*=\s*['"]?)\Q$ref\E(['"]?)}) {
+                         my $numchg = ($content =~ s{($attrib_regexp\s*=\s*['"]?)\Q$ref\E(['"]?)}{$1$newname$2}gi);
+                         $count += $numchg;
+                         $allfiles{$newname} = $allfiles{$ref};
+                         delete($allfiles{$ref});
+                     }
+                     if ($env{'form.embedded_codebase_'.$i} ne '') {
+                         $codebase = &unescape($env{'form.embedded_codebase_'.$i});
+                         my $numchg = ($content =~ s/(codebase\s*=\s*["']?)\Q$codebase\E(["']?)/$1.$2/i); #' stupid emacs
+                         $codebasecount ++;
+                     }
+                 }
+             }
+             my $skiprewrites;
+             if ($count || $codebasecount) {
+                 my $saveresult;
+                 if (($context eq 'portfolio') || ($context eq 'coursedoc') ||
+                     ($context eq 'manage_dependencies') || ($context eq 'syllabus')) {
+                     my $url = &Apache::lonnet::store_edited_file($container,$content,$udom,$uname,\$saveresult);
+                     if ($url eq $container) {
+                         my ($fname) = ($container =~ m{/([^/]+)$});
+                         $output = '<p>'.&mt('Updated [quant,_1,reference] in [_2].',
+                                             $count,'<span class="LC_filename">'.
+                                             $fname.'</span>').'</p>';
+                     } else {
+                          $output = '<p class="LC_error">'.
+                                    &mt('Error: update failed for: [_1].',
+                                    '<span class="LC_filename">'.
+                                    $container.'</span>').'</p>';
+                     }
+                     if ($context eq 'syllabus') {
+                         unless ($saveresult eq 'ok') {
+                             $skiprewrites = 1;
+                         }
+                     }
+                 } else {
+                     if (open(my $fh,">$container")) {
+                         print $fh $content;
+                         close($fh);
+                         $output = '<p>'.&mt('Updated [quant,_1,reference] in [_2].',
+                                   $count,'<span class="LC_filename">'.
+                                   $container.'</span>').'</p>';
+                     } else {
+                          $output = '<p class="LC_error">'.
+                                    &mt('Error: could not update [_1].',
+                                    '<span class="LC_filename">'.
+                                    $container.'</span>').'</p>';
+                     }
+                 }
+             }
+             if (($context eq 'syllabus') && (!$skiprewrites)) {
+                 my ($actionurl,$state);
+                 $actionurl = "/public/$udom/$uname/syllabus";
+                 my ($ignore,$num,$numpathchanges,$existing,$mapping) =
+                     &ask_for_embedded_content($actionurl,$state,\%allfiles,
+                                               \%codebase,
+                                               {'context' => 'rewrites',
+                                                'ignore_remote_references' => 1,});
+                 if (ref($mapping) eq 'HASH') {
+                     my $rewrites = 0;
+                     foreach my $key (keys(%{$mapping})) {
+                         next if ($key =~ m{^https?://});
+                         my $ref = $mapping->{$key};
+                         my $newname = "/uploaded/$udom/$uname/portfolio/syllabus/$key";
+                         my $attrib;
+                         if (ref($allfiles{$mapping->{$key}}) eq 'ARRAY') {
+                             $attrib = join('|',@{$allfiles{$mapping->{$key}}});
+                         }
+                         if ($content =~ m{($attrib\s*=\s*['"]?)\Q$ref\E(['"]?)}) {
+                             my $numchg = ($content =~ s{($attrib\s*=\s*['"]?)\Q$ref\E(['"]?)}{$1$newname$2}gi);
+                             $rewrites += $numchg;
+                         }
+                     }
+                     if ($rewrites) {
+                         my $saveresult;
+                         my $url = &Apache::lonnet::store_edited_file($container,$content,$udom,$uname,\$saveresult);
+                         if ($url eq $container) {
+                             my ($fname) = ($container =~ m{/([^/]+)$});
+                             $output .= '<p>'.&mt('Rewrote [quant,_1,link] as [quant,_1,absolute link] in [_2].',
+                                             $count,'<span class="LC_filename">'.
+                                             $fname.'</span>').'</p>';
+                         } else {
+                             $output .= '<p class="LC_error">'.
+                                        &mt('Error: could not update links in [_1].',
+                                        '<span class="LC_filename">'.
+                                        $container.'</span>').'</p>';
+                         }
+                     }
+                 }
+             }
+         } else {
+             &logthis('Failed to parse '.$container.
+                      ' to modify references: '.$parse_result);
+         }
+     }
+     if (wantarray) {
+         return ($output,$count,$codebasecount);
+     } else {
+         return $output;
+     }
+ }
+ sub check_for_existing {
+     my ($path,$fname,$element) = @_;
+     my ($state,$msg);
+     if (-d $path.'/'.$fname) {
+         $state = 'exists';
+         $msg = &mt('Unable to upload [_1]. A directory by that name was found in [_2].','<span class="LC_filename">'.$fname.'</span>',$path);
+     } elsif (-e $path.'/'.$fname) {
+         $state = 'exists';
+         $msg = &mt('Unable to upload [_1]. A file by that name was found in [_2].','<span class="LC_filename">'.$fname.'</span>',$path);
+     }
+     if ($state eq 'exists') {
+         $msg = '<span class="LC_error">'.$msg.'</span><br />';
+     }
+     return ($state,$msg);
+ }
+ sub check_for_upload {
+     my ($path,$fname,$group,$element,$portfolio_root,$port_path,
+         $disk_quota,$current_disk_usage,$uname,$udom) = @_;
+     my $filesize = length($env{'form.'.$element});
+     if (!$filesize) {
+         my $msg = '<span class="LC_error">'.
+                   &mt('Unable to upload [_1]. (size = [_2] bytes)',
+                       '<span class="LC_filename">'.$fname.'</span>',
+                       $filesize).'<br />'.
+                   &mt('Either the file you attempted to upload was empty, or your web browser was unable to read its contents.').'<br />'.
+                   '</span>';
+         return ('zero_bytes',$msg);
+     }
+     $filesize =  $filesize/1000; #express in k (1024?)
+     my $getpropath = 1;
+     my ($dirlistref,$listerror) =
+          &Apache::lonnet::dirlist($portfolio_root.$path,$udom,$uname,$getpropath);
+     my $found_file = 0;
+     my $locked_file = 0;
+     my @lockers;
+     my $navmap;
+     if ($env{'request.course.id'}) {
+         $navmap = Apache::lonnavmaps::navmap->new();
+     }
+     if (ref($dirlistref) eq 'ARRAY') {
+         foreach my $line (@{$dirlistref}) {
+             my ($file_name,$rest)=split(/\&/,$line,2);
+             if ($file_name eq $fname){
+                 $file_name = $path.$file_name;
+                 if ($group ne '') {
+                     $file_name = $group.$file_name;
+                 }
+                 $found_file = 1;
+                 if (&Apache::lonnet::is_locked($file_name,$udom,$uname,\@lockers) eq 'true') {
+                     foreach my $lock (@lockers) {
+                         if (ref($lock) eq 'ARRAY') {
+                             my ($symb,$crsid) = @{$lock};
+                             if ($crsid eq $env{'request.course.id'}) {
+                                 if (ref($navmap)) {
+                                     my $res = $navmap->getBySymb($symb);
+                                     foreach my $part (@{$res->parts()}) {
+                                         my ($slot_status,$slot_time,$slot_name)=$res->check_for_slot($part);
+                                         unless (($slot_status == $res->RESERVED) ||
+                                                 ($slot_status == $res->RESERVED_LOCATION)) {
+                                             $locked_file = 1;
+                                         }
+                                     }
+                                 } else {
+                                     $locked_file = 1;
+                                 }
+                             } else {
+                                 $locked_file = 1;
+                             }
+                         }
+                    }
+                 } else {
+                     my @info = split(/\&/,$rest);
+                     my $currsize = $info[6]/1000;
+                     if ($currsize < $filesize) {
+                         my $extra = $filesize - $currsize;
+                         if (($current_disk_usage + $extra) > $disk_quota) {
+                             my $msg = '<p class="LC_warning">'.
+                                       &mt('Unable to upload [_1]. (size = [_2] kilobytes). Disk quota will be exceeded if existing (smaller) file with same name (size = [_3] kilobytes) is replaced.',
+                                           '<span class="LC_filename">'.$fname.'</span>',$filesize,$currsize).'</p>'.
+                                       '<p>'.&mt('Disk quota is [_1] kilobytes. Your current disk usage is [_2] kilobytes.',
+                                                    $disk_quota,$current_disk_usage).'</p>';
+                             return ('will_exceed_quota',$msg);
+                         }
+                     }
+                 }
+             }
+         }
+     }
+     if (($current_disk_usage + $filesize) > $disk_quota){
+         my $msg = '<p class="LC_warning">'.
+                 &mt('Unable to upload [_1]. (size = [_2] kilobytes). Disk quota will be exceeded.','<span class="LC_filename">'.$fname.'</span>',$filesize).'</p>'.
+                   '<p>'.&mt('Disk quota is [_1] kilobytes. Your current disk usage is [_2] kilobytes.',$disk_quota,$current_disk_usage).'</p>';
+         return ('will_exceed_quota',$msg);
+     } elsif ($found_file) {
+         if ($locked_file) {
+             my $msg = '<p class="LC_warning">';
+             $msg .= &mt('Unable to upload [_1]. A locked file by that name was found in [_2].','<span class="LC_filename">'.$fname.'</span>','<span class="LC_filename">'.$port_path.$env{'form.currentpath'}.'</span>');
+             $msg .= '</p>';
+             $msg .= &mt('You will be able to rename or delete existing [_1] after a grade has been assigned.','<span class="LC_filename">'.$fname.'</span>');
+             return ('file_locked',$msg);
+         } else {
+             my $msg = '<p class="LC_error">';
+             $msg .= &mt(' A file by that name: [_1] was found in [_2].','<span class="LC_filename">'.$fname.'</span>',$port_path.$env{'form.currentpath'});
+             $msg .= '</p>';
+             return ('existingfile',$msg);
+         }
+     }
+ }
+ sub check_for_traversal {
+     my ($path,$url,$toplevel) = @_;
+     my @parts=split(/\//,$path);
+     my $cleanpath;
+     my $fullpath = $url;
+     for (my $i=0;$i<@parts;$i++) {
+         next if ($parts[$i] eq '.');
+         if ($parts[$i] eq '..') {
+             $fullpath =~ s{([^/]+/)$}{};
+         } else {
+             $fullpath .= $parts[$i].'/';
+         }
+     }
+     if ($fullpath =~ /^\Q$url\E(.*)$/) {
+         $cleanpath = $1;
+     } elsif ($fullpath =~ /^\Q$toplevel\E(.*)$/) {
+         my $curr_toprel = $1;
+         my @parts = split(/\//,$curr_toprel);
+         my ($url_toprel) = ($url =~ /^\Q$toplevel\E(.*)$/);
+         my @urlparts = split(/\//,$url_toprel);
+         my $doubledots;
+         my $startdiff = -1;
+         for (my $i=0; $i<@urlparts; $i++) {
+             if ($startdiff == -1) {
+                 unless ($urlparts[$i] eq $parts[$i]) {
+                     $startdiff = $i;
+                     $doubledots .= '../';
+                 }
+             } else {
+                 $doubledots .= '../';
+             }
+         }
+         if ($startdiff > -1) {
+             $cleanpath = $doubledots;
+             for (my $i=$startdiff; $i<@parts; $i++) {
+                 $cleanpath .= $parts[$i].'/';
+             }
+         }
+     }
+     $cleanpath =~ s{(/)$}{};
+     return $cleanpath;
+ }
+ sub is_archive_file {
+     my ($mimetype) = @_;
+     if (($mimetype eq 'application/octet-stream') ||
+         ($mimetype eq 'application/x-stuffit') ||
+         ($mimetype =~ m{^application/(x\-)?(compressed|tar|zip|tgz|gz|gtar|gzip|gunzip|bz|bz2|bzip2)})) {
+         return 1;
+     }
+     return;
+ }
+ sub decompress_form {
+     my ($mimetype,$archiveurl,$action,$noextract,$hiddenelements,$dirlist) = @_;
+     my %lt = &Apache::lonlocal::texthash (
+         this => 'This file is an archive file.',
+         camt => 'This file is a Camtasia archive file.',
+         itsc => 'Its contents are as follows:',
+         youm => 'You may wish to extract its contents.',
+         extr => 'Extract contents',
+         auto => 'LON-CAPA can process the files automatically, or you can decide how each should be handled.',
+         proa => 'Process automatically?',
+         yes  => 'Yes',
+         no   => 'No',
+         fold => 'Title for folder containing movie',
+         movi => 'Title for page containing embedded movie',
+     );
+     my $fileloc = &Apache::lonnet::filelocation(undef,$archiveurl);
+     my ($is_camtasia,$topdir,%toplevel,@paths);
+     my $info = &list_archive_contents($fileloc,\@paths);
+     if (@paths) {
+         foreach my $path (@paths) {
+             $path =~ s{^/}{};
+             if ($path =~ m{^([^/]+)/$}) {
+                 $topdir = $1;
+             }
+             if ($path =~ m{^([^/]+)/}) {
+                 $toplevel{$1} = $path;
+             } else {
+                 $toplevel{$path} = $path;
+             }
+         }
+     }
+     if ($mimetype =~ m{^application/(x\-)?(compressed|zip)}) {
+         my @camtasia6 = ("$topdir/","$topdir/index.html",
+                         "$topdir/media/",
+                         "$topdir/media/$topdir.mp4",
+                         "$topdir/media/FirstFrame.png",
+                         "$topdir/media/player.swf",
+                         "$topdir/media/swfobject.js",
+                         "$topdir/media/expressInstall.swf");
+         my @camtasia8_1 = ("$topdir/","$topdir/$topdir.html",
+                          "$topdir/$topdir.mp4",
+                          "$topdir/$topdir\_config.xml",
+                          "$topdir/$topdir\_controller.swf",
+                          "$topdir/$topdir\_embed.css",
+                          "$topdir/$topdir\_First_Frame.png",
+                          "$topdir/$topdir\_player.html",
+                          "$topdir/$topdir\_Thumbnails.png",
+                          "$topdir/playerProductInstall.swf",
+                          "$topdir/scripts/",
+                          "$topdir/scripts/config_xml.js",
+                          "$topdir/scripts/handlebars.js",
+                          "$topdir/scripts/jquery-1.7.1.min.js",
+                          "$topdir/scripts/jquery-ui-1.8.15.custom.min.js",
+                          "$topdir/scripts/modernizr.js",
+                          "$topdir/scripts/player-min.js",
+                          "$topdir/scripts/swfobject.js",
+                          "$topdir/skins/",
+                          "$topdir/skins/configuration_express.xml",
+                          "$topdir/skins/express_show/",
+                          "$topdir/skins/express_show/player-min.css",
+                          "$topdir/skins/express_show/spritesheet.png");
+         my @camtasia8_4 = ("$topdir/","$topdir/$topdir.html",
+                          "$topdir/$topdir.mp4",
+                          "$topdir/$topdir\_config.xml",
+                          "$topdir/$topdir\_controller.swf",
+                          "$topdir/$topdir\_embed.css",
+                          "$topdir/$topdir\_First_Frame.png",
+                          "$topdir/$topdir\_player.html",
+                          "$topdir/$topdir\_Thumbnails.png",
+                          "$topdir/playerProductInstall.swf",
+                          "$topdir/scripts/",
+                          "$topdir/scripts/config_xml.js",
+                          "$topdir/scripts/techsmith-smart-player.min.js",
+                          "$topdir/skins/",
+                          "$topdir/skins/configuration_express.xml",
+                          "$topdir/skins/express_show/",
+                          "$topdir/skins/express_show/spritesheet.min.css",
+                          "$topdir/skins/express_show/spritesheet.png",
+                          "$topdir/skins/express_show/techsmith-smart-player.min.css");
+         my @diffs = &compare_arrays(\@paths,\@camtasia6);
+         if (@diffs == 0) {
+             $is_camtasia = 6;
+         } else {
+             @diffs = &compare_arrays(\@paths,\@camtasia8_1);
+             if (@diffs == 0) {
+                 $is_camtasia = 8;
+             } else {
+                 @diffs = &compare_arrays(\@paths,\@camtasia8_4);
+                 if (@diffs == 0) {
+                     $is_camtasia = 8;
+                 }
+             }
+         }
+     }
+     my $output;
+     if ($is_camtasia) {
+         $output = <<"ENDCAM";
+ <script type="text/javascript" language="Javascript">
+ // <![CDATA[
+ function camtasiaToggle() {
+     for (var i=0; i<document.uploaded_decompress.autoextract_camtasia.length; i++) {
+         if (document.uploaded_decompress.autoextract_camtasia[i].checked) {
+             if (document.uploaded_decompress.autoextract_camtasia[i].value == $is_camtasia) {
+                 document.getElementById('camtasia_titles').style.display='block';
+             } else {
+                 document.getElementById('camtasia_titles').style.display='none';
+             }
+         }
+     }
+     return;
+ }
+ // ]]>
+ </script>
+ <p>$lt{'camt'}</p>
+ ENDCAM
+     } else {
+         $output = '<p>'.$lt{'this'};
+         if ($info eq '') {
+             $output .= ' '.$lt{'youm'}.'</p>'."\n";
+         } else {
+             $output .= ' '.$lt{'itsc'}.'</p>'."\n".
+                        '<div><pre>'.$info.'</pre></div>';
+         }
+     }
+     $output .= '<form name="uploaded_decompress" action="'.$action.'" method="post">'."\n";
+     my $duplicates;
+     my $num = 0;
+     if (ref($dirlist) eq 'ARRAY') {
+         foreach my $item (@{$dirlist}) {
+             if (ref($item) eq 'ARRAY') {
+                 if (exists($toplevel{$item->[0]})) {
+                     $duplicates .=
+                         &start_data_table_row().
+                         '<td><label><input type="radio" name="archive_overwrite_'.$num.'" '.
+                         'value="0" checked="checked" />'.&mt('No').'</label>'.
+                         '&nbsp;<label><input type="radio" name="archive_overwrite_'.$num.'" '.
+                         'value="1" />'.&mt('Yes').'</label>'.
+                         '<input type="hidden" name="archive_overwrite_name_'.$num.'" value="'.$item->[0].'" /></td>'."\n".
+                         '<td>'.$item->[0].'</td>';
+                     if ($item->[2]) {
+                         $duplicates .= '<td>'.&mt('Directory').'</td>';
+                     } else {
+                         $duplicates .= '<td>'.&mt('File').'</td>';
+                     }
+                     $duplicates .= '<td>'.$item->[3].'</td>'.
+                                    '<td>'.
+                                    &Apache::lonlocal::locallocaltime($item->[4]).
+                                    '</td>'.
+                                    &end_data_table_row();
+                     $num ++;
+                 }
+             }
+         }
+     }
+     my $itemcount;
+     if (@paths > 0) {
+         $itemcount = scalar(@paths);
+     } else {
+         $itemcount = 1;
+     }
+     if ($is_camtasia) {
+         $output .= $lt{'auto'}.'<br />'.
+                    '<span class="LC_nobreak">'.$lt{'proa'}.'<label>'.
+                    '<input type="radio" name="autoextract_camtasia" value="'.$is_camtasia.'" onclick="javascript:camtasiaToggle();" checked="checked" />'.
+                    $lt{'yes'}.'</label>&nbsp;<label>'.
+                    '<input type="radio" name="autoextract_camtasia" value="0" onclick="javascript:camtasiaToggle();" />'.
+                    $lt{'no'}.'</label></span><br />'.
+                    '<div id="camtasia_titles" style="display:block">'.
+                    &Apache::lonhtmlcommon::start_pick_box().
+                    &Apache::lonhtmlcommon::row_title($lt{'fold'}).
+                    '<input type="textbox" name="camtasia_foldername" value="'.$env{'form.comment'}.'" />'."\n".
+                    &Apache::lonhtmlcommon::row_closure().
+                    &Apache::lonhtmlcommon::row_title($lt{'movi'}).
+                    '<input type="textbox" name="camtasia_moviename" value="" />'."\n".
+                    &Apache::lonhtmlcommon::row_closure(1).
+                    &Apache::lonhtmlcommon::end_pick_box().
+                    '</div>';
+     }
+     $output .=
+         '<input type="hidden" name="archive_overwrite_total" value="'.$num.'" />'.
+         '<input type="hidden" name="archive_itemcount" value="'.$itemcount.'" />'.
+         "\n";
+     if ($duplicates ne '') {
+         $output .= '<p><span class="LC_warning">'.
+                    &mt('Warning: decompression of the archive will overwrite the following items which already exist:').'</span><br />'.
+                    &start_data_table().
+                    &start_data_table_header_row().
+                    '<th>'.&mt('Overwrite?').'</th>'.
+                    '<th>'.&mt('Name').'</th>'.
+                    '<th>'.&mt('Type').'</th>'.
+                    '<th>'.&mt('Size').'</th>'.
+                    '<th>'.&mt('Last modified').'</th>'.
+                    &end_data_table_header_row().
+                    $duplicates.
+                    &end_data_table().
+                    '</p>';
+     }
+     $output .= '<input type="hidden" name="archiveurl" value="'.$archiveurl.'" />'."\n";
+     if (ref($hiddenelements) eq 'HASH') {
+         foreach my $hidden (sort(keys(%{$hiddenelements}))) {
+             $output .= '<input type="hidden" name="'.$hidden.'" value="'.$hiddenelements->{$hidden}.'" />'."\n";
+         }
+     }
+     $output .= <<"END";
+ <br />
+ <input type="submit" name="decompress" value="$lt{'extr'}" />
+ </form>
+ $noextract
+ END
+     return $output;
+ }
+ sub decompression_utility {
+     my ($program) = @_;
+     my @utilities = ('tar','gunzip','bunzip2','unzip');
+     my $location;
+     if (grep(/^\Q$program\E$/,@utilities)) {
+         foreach my $dir ('/bin/','/usr/bin/','/usr/local/bin/','/sbin/',
+                          '/usr/sbin/') {
+             if (-x $dir.$program) {
+                 $location = $dir.$program;
+                 last;
+             }
+         }
+     }
+     return $location;
+ }
+ sub list_archive_contents {
+     my ($file,$pathsref) = @_;
+     my (@cmd,$output);
+     my $needsregexp;
+     if ($file =~ /\.zip$/) {
+         @cmd = (&decompression_utility('unzip'),"-l");
+         $needsregexp = 1;
+     } elsif (($file =~ m/\.tar\.gz$/) ||
+              ($file =~ /\.tgz$/)) {
+         @cmd = (&decompression_utility('tar'),"-ztf");
+     } elsif ($file =~ /\.tar\.bz2$/) {
+         @cmd = (&decompression_utility('tar'),"-jtf");
+     } elsif ($file =~ m|\.tar$|) {
+         @cmd = (&decompression_utility('tar'),"-tf");
+     }
+     if (@cmd) {
+         undef($!);
+         undef($@);
+         if (open(my $fh,"-|", @cmd, $file)) {
+             while (my $line = <$fh>) {
+                 $output .= $line;
+                 chomp($line);
+                 my $item;
+                 if ($needsregexp) {
+                     ($item) = ($line =~ /^\s*\d+\s+[\d\-]+\s+[\d:]+\s*(.+)$/);
+                 } else {
+                     $item = $line;
+                 }
+                 if ($item ne '') {
+                     unless (grep(/^\Q$item\E$/,@{$pathsref})) {
+                         push(@{$pathsref},$item);
+                     }
+                 }
+             }
+             close($fh);
+         }
+     }
+     return $output;
+ }
+ sub decompress_uploaded_file {
+     my ($file,$dir) = @_;
+     &Apache::lonnet::appenv({'cgi.file' => $file});
+     &Apache::lonnet::appenv({'cgi.dir' => $dir});
+     my $result = &Apache::lonnet::ssi_body('/cgi-bin/decompress.pl');
+     my ($handle) = ($env{'user.environment'} =~m{/([^/]+)\.id$});
+     my $lonidsdir = $Apache::lonnet::perlvar{'lonIDsDir'};
+     &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle,1);
+     my $decompressed = $env{'cgi.decompressed'};
+     &Apache::lonnet::delenv('cgi.file');
+     &Apache::lonnet::delenv('cgi.dir');
+     &Apache::lonnet::delenv('cgi.decompressed');
+     return ($decompressed,$result);
+ }
+ sub process_decompression {
+     my ($docudom,$docuname,$file,$destination,$dir_root,$hiddenelem) = @_;
+     my ($dir,$error,$warning,$output);
+     if ($file !~ /\.(zip|tar|bz2|gz|tar.gz|tar.bz2|tgz)$/i) {
+         $error = &mt('Filename not a supported archive file type.').
+                  '<br />'.&mt('Filename should end with one of: [_1].',
+                               '.zip, .tar, .bz2, .gz, .tar.gz, .tar.bz2, .tgz');
+     } else {
+         my $docuhome = &Apache::lonnet::homeserver($docuname,$docudom);
+         if ($docuhome eq 'no_host') {
+             $error = &mt('Could not determine home server for course.');
+         } else {
+             my @ids=&Apache::lonnet::current_machine_ids();
+             my $currdir = "$dir_root/$destination";
+             if (grep(/^\Q$docuhome\E$/,@ids)) {
+                 $dir = &LONCAPA::propath($docudom,$docuname).
+                        "$dir_root/$destination";
+             } else {
+                 $dir = $Apache::lonnet::perlvar{'lonDocRoot'}.
+                        "$dir_root/$docudom/$docuname/$destination";
+                 unless (&Apache::lonnet::repcopy_userfile("$dir/$file") eq 'ok') {
+                     $error = &mt('Archive file not found.');
+                 }
+             }
+             my (@to_overwrite,@to_skip);
+             if ($env{'form.archive_overwrite_total'} > 0) {
+                 my $total = $env{'form.archive_overwrite_total'};
+                 for (my $i=0; $i<$total; $i++) {
+                     if ($env{'form.archive_overwrite_'.$i} == 1) {
+                         push(@to_overwrite,$env{'form.archive_overwrite_name_'.$i});
+                     } elsif ($env{'form.archive_overwrite_'.$i} == 0) {
+                         push(@to_skip,$env{'form.archive_overwrite_name_'.$i});
+                     }
+                 }
+             }
+             my $numskip = scalar(@to_skip);
+             if (($numskip > 0) &&
+                 ($numskip == $env{'form.archive_itemcount'})) {
+                 $warning = &mt('All items in the archive file already exist, and no overwriting of existing files has been requested.');
+             } elsif ($dir eq '') {
+                 $error = &mt('Directory containing archive file unavailable.');
+             } elsif (!$error) {
+                 my ($decompressed,$display);
+                 if ($numskip > 0) {
+                     my $tempdir = time.'_'.$$.int(rand(10000));
+                     mkdir("$dir/$tempdir",0755);
+                     system("mv $dir/$file $dir/$tempdir/$file");
+                     ($decompressed,$display) =
+                         &decompress_uploaded_file($file,"$dir/$tempdir");
+                     foreach my $item (@to_skip) {
+                         if (($item ne '') && ($item !~ /\.\./)) {
+                             if (-f "$dir/$tempdir/$item") {
+                                 unlink("$dir/$tempdir/$item");
+                             } elsif (-d "$dir/$tempdir/$item") {
+                                 system("rm -rf $dir/$tempdir/$item");
+                             }
+                         }
+                     }
+                     system("mv $dir/$tempdir/* $dir");
+                     rmdir("$dir/$tempdir");
+                 } else {
+                     ($decompressed,$display) =
+                         &decompress_uploaded_file($file,$dir);
+                 }
+                 if ($decompressed eq 'ok') {
+                     $output = '<p class="LC_info">'.
+                               &mt('Files extracted successfully from archive.').
+                               '</p>'."\n";
+                     my ($warning,$result,@contents);
+                     my ($newdirlistref,$newlisterror) =
+                         &Apache::lonnet::dirlist($currdir,$docudom,
+                                                  $docuname,1);
+                     my (%is_dir,%changes,@newitems);
+                     my $dirptr = 16384;
+                     if (ref($newdirlistref) eq 'ARRAY') {
+                         foreach my $dir_line (@{$newdirlistref}) {
+                             my ($item,undef,undef,$testdir)=split(/\&/,$dir_line,5);
+                             unless (($item =~ /^\.+$/) || ($item eq $file) ||
+                                     ((@to_skip > 0) && (grep(/^\Q$item\E$/,@to_skip)))) {
+                                 push(@newitems,$item);
+                                 if ($dirptr&$testdir) {
+                                     $is_dir{$item} = 1;
+                                 }
+                                 $changes{$item} = 1;
+                             }
+                         }
+                     }
+                     if (keys(%changes) > 0) {
+                         foreach my $item (sort(@newitems)) {
+                             if ($changes{$item}) {
+                                 push(@contents,$item);
+                             }
+                         }
+                     }
+                     if (@contents > 0) {
+                         my $wantform;
+                         unless ($env{'form.autoextract_camtasia'}) {
+                             $wantform = 1;
+                         }
+                         my (%children,%parent,%dirorder,%titles);
+                         my ($count,$datatable) = &get_extracted($docudom,$docuname,
+                                                                 $currdir,\%is_dir,
+                                                                 \%children,\%parent,
+                                                                 \@contents,\%dirorder,
+                                                                 \%titles,$wantform);
+                         if ($datatable ne '') {
+                             $output .= &archive_options_form('decompressed',$datatable,
+                                                              $count,$hiddenelem);
+                             my $startcount = 6;
+                             $output .= &archive_javascript($startcount,$count,
+                                                            \%titles,\%children);
+                         }
+                         if ($env{'form.autoextract_camtasia'}) {
+                             my $version = $env{'form.autoextract_camtasia'};
+                             my %displayed;
+                             my $total = 1;
+                             $env{'form.archive_directory'} = [];
+                             foreach my $i (sort { $a <=> $b } keys(%dirorder)) {
+                                 my $path = join('/',map { $titles{$_}; } @{$dirorder{$i}});
+                                 $path =~ s{/$}{};
+                                 my $item;
+                                 if ($path ne '') {
+                                     $item = "$path/$titles{$i}";
+                                 } else {
+                                     $item = $titles{$i};
+                                 }
+                                 $env{'form.archive_content_'.$i} = "$dir_root/$destination/$item";
+                                 if ($item eq $contents[0]) {
+                                     push(@{$env{'form.archive_directory'}},$i);
+                                     $env{'form.archive_'.$i} = 'display';
+                                     $env{'form.archive_title_'.$i} = $env{'form.camtasia_foldername'};
+                                     $displayed{'folder'} = $i;
+                                 } elsif ((($item eq "$contents[0]/index.html") && ($version == 6)) ||
+                                          (($item eq "$contents[0]/$contents[0]".'.html') && ($version == 8))) {
+                                     $env{'form.archive_'.$i} = 'display';
+                                     $env{'form.archive_title_'.$i} = $env{'form.camtasia_moviename'};
+                                     $displayed{'web'} = $i;
+                                 } else {
+                                     if ((($item eq "$contents[0]/media") && ($version == 6)) ||
+                                         ((($item eq "$contents[0]/scripts") || ($item eq "$contents[0]/skins") ||
+                                              ($item eq "$contents[0]/skins/express_show")) && ($version == 8))) {
+                                         push(@{$env{'form.archive_directory'}},$i);
+                                     }
+                                     $env{'form.archive_'.$i} = 'dependency';
+                                 }
+                                 $total ++;
+                             }
+                             for (my $i=1; $i<$total; $i++) {
+                                 next if ($i == $displayed{'web'});
+                                 next if ($i == $displayed{'folder'});
+                                 $env{'form.archive_dependent_on_'.$i} = $displayed{'web'};
+                             }
+                             $env{'form.phase'} = 'decompress_cleanup';
+                             $env{'form.archivedelete'} = 1;
+                             $env{'form.archive_count'} = $total-1;
+                             $output .=
+                                 &process_extracted_files('coursedocs',$docudom,
+                                                          $docuname,$destination,
+                                                          $dir_root,$hiddenelem);
+                         }
+                     } else {
+                         $warning = &mt('No new items extracted from archive file.');
+                     }
+                 } else {
+                     $output = $display;
+                     $error = &mt('An error occurred during extraction from the archive file.');
+                 }
+             }
+         }
+     }
+     if ($error) {
+         $output .= '<p class="LC_error">'.&mt('Not extracted.').'<br />'.
+                    $error.'</p>'."\n";
+     }
+     if ($warning) {
+         $output .= '<p class="LC_warning">'.$warning.'</p>'."\n";
+     }
+     return $output;
+ }
+ sub get_extracted {
+     my ($docudom,$docuname,$currdir,$is_dir,$children,$parent,$contents,$dirorder,
+         $titles,$wantform) = @_;
+     my $count = 0;
+     my $depth = 0;
+     my $datatable;
+     my @hierarchy;
+     return unless ((ref($is_dir) eq 'HASH') && (ref($children) eq 'HASH') &&
+                    (ref($parent) eq 'HASH') && (ref($contents) eq 'ARRAY') &&
+                    (ref($dirorder) eq 'HASH') && (ref($titles) eq 'HASH'));
+     foreach my $item (@{$contents}) {
+         $count ++;
+         @{$dirorder->{$count}} = @hierarchy;
+         $titles->{$count} = $item;
+         &archive_hierarchy($depth,$count,$parent,$children);
+         if ($wantform) {
+             $datatable .= &archive_row($is_dir->{$item},$item,
+                                        $currdir,$depth,$count);
+         }
+         if ($is_dir->{$item}) {
+             $depth ++;
+             push(@hierarchy,$count);
+             $parent->{$depth} = $count;
+             $datatable .=
+                 &recurse_extracted_archive("$currdir/$item",$docudom,$docuname,
+                                            \$depth,\$count,\@hierarchy,$dirorder,
+                                            $children,$parent,$titles,$wantform);
+             $depth --;
+             pop(@hierarchy);
+         }
+     }
+     return ($count,$datatable);
+ }
+ sub recurse_extracted_archive {
+     my ($currdir,$docudom,$docuname,$depth,$count,$hierarchy,$dirorder,
+         $children,$parent,$titles,$wantform) = @_;
+     my $result='';
+     unless ((ref($depth)) && (ref($count)) && (ref($hierarchy) eq 'ARRAY') &&
+             (ref($children) eq 'HASH') && (ref($parent) eq 'HASH') &&
+             (ref($dirorder) eq 'HASH')) {
+         return $result;
+     }
+     my $dirptr = 16384;
+     my ($newdirlistref,$newlisterror) =
+         &Apache::lonnet::dirlist($currdir,$docudom,$docuname,1);
+     if (ref($newdirlistref) eq 'ARRAY') {
+         foreach my $dir_line (@{$newdirlistref}) {
+             my ($item,undef,undef,$testdir)=split(/\&/,$dir_line,5);
+             unless ($item =~ /^\.+$/) {
+                 $$count ++;
+                 @{$dirorder->{$$count}} = @{$hierarchy};
+                 $titles->{$$count} = $item;
+                 &archive_hierarchy($$depth,$$count,$parent,$children);
+                 my $is_dir;
+                 if ($dirptr&$testdir) {
+                     $is_dir = 1;
+                 }
+                 if ($wantform) {
+                     $result .= &archive_row($is_dir,$item,$currdir,$$depth,$$count);
+                 }
+                 if ($is_dir) {
+                     $$depth ++;
+                     push(@{$hierarchy},$$count);
+                     $parent->{$$depth} = $$count;
+                     $result .=
+                         &recurse_extracted_archive("$currdir/$item",$docudom,
+                                                    $docuname,$depth,$count,
+                                                    $hierarchy,$dirorder,$children,
+                                                    $parent,$titles,$wantform);
+                     $$depth --;
+                     pop(@{$hierarchy});
+                 }
+             }
+         }
+     }
+     return $result;
+ }
+ sub archive_hierarchy {
+     my ($depth,$count,$parent,$children) =@_;
+     if ((ref($parent) eq 'HASH') && (ref($children) eq 'HASH')) {
+         if (exists($parent->{$depth})) {
+              $children->{$parent->{$depth}} .= $count.':';
+         }
+     }
+     return;
+ }
+ sub archive_row {
+     my ($is_dir,$item,$currdir,$depth,$count) = @_;
+     my ($name) = ($item =~ m{([^/]+)$});
+     my %choices = &Apache::lonlocal::texthash (
+                                        'display'    => 'Add as file',
+                                        'dependency' => 'Include as dependency',
+                                        'discard'    => 'Discard',
+                                       );
+     if ($is_dir) {
+         $choices{'display'} = &mt('Add as folder');
+     }
+     my $output = &start_data_table_row().'<td align="right">'.$count.'</td>'."\n";
+     my $offset = 0;
+     foreach my $action ('display','dependency','discard') {
+         $offset ++;
+         if ($action ne 'display') {
+             $offset ++;
+         }
+         $output .= '<td><span class="LC_nobreak">'.
+                    '<label><input type="radio" name="archive_'.$count.
+                    '" id="archive_'.$action.'_'.$count.'" value="'.$action.'"';
+         my $text = $choices{$action};
+         if ($is_dir) {
+             $output .= ' onclick="javascript:propagateCheck(this.form,'."'$count'".');"';
+             if ($action eq 'display') {
+                 $text = &mt('Add as folder');
+             }
+         } else {
+             $output .= ' onclick="javascript:dependencyCheck(this.form,'."$count,$offset".');"';
+         }
+         $output .= ' />&nbsp;'.$choices{$action}.'</label></span>';
+         if ($action eq 'dependency') {
+             $output .= '<div id="arc_depon_'.$count.'" style="display:none;">'."\n".
+                        &mt('Used by:').'&nbsp;<select name="archive_dependent_on_'.$count.'" '.
+                        'onchange="propagateSelect(this.form,'."$count,$offset".')">'."\n".
+                        '<option value=""></option>'."\n".
+                        '</select>'."\n".
+                        '</div>';
+         } elsif ($action eq 'display') {
+             $output .= '<div id="arc_title_'.$count.'" style="display:none;">'."\n".
+                        &mt('Title:').'&nbsp;<input type="text" name="archive_title_'.$count.'" id="archive_title_'.$count.'" />'."\n".
+                        '</div>';
+         }
+         $output .= '</td>';
+     }
+     $output .= '<td><input type="hidden" name="archive_content_'.$count.'" value="'.
+                &HTML::Entities::encode("$currdir/$item",'"<>&').'" />'.('&nbsp;' x 2);
+     for (my $i=0; $i<$depth; $i++) {
+         $output .= ('<img src="/adm/lonIcons/whitespace1.gif" class="LC_docs_spacer" alt="" />' x2)."\n";
+     }
+     if ($is_dir) {
+         $output .= '<img src="/adm/lonIcons/navmap.folder.open.gif" alt="" />&nbsp;'."\n".
+                    '<input type="hidden" name="archive_directory" value="'.$count.'" />'."\n";
+     } else {
+         $output .= '<input type="hidden" name="archive_file" value="'.$count.'" />'."\n";
+     }
+     $output .= '&nbsp;'.$name.'</td>'."\n".
+                &end_data_table_row();
+     return $output;
+ }
+ sub archive_options_form {
+     my ($form,$display,$count,$hiddenelem) = @_;
+     my %lt = &Apache::lonlocal::texthash(
+                perm => 'Permanently remove archive file?',
+                hows => 'How should each extracted item be incorporated in the course?',
+                cont => 'Content actions for all',
+                addf => 'Add as folder/file',
+                incd => 'Include as dependency for a displayed file',
+                disc => 'Discard',
+                no   => 'No',
+                yes  => 'Yes',
+                save => 'Save',
+     );
+     my $output = <<"END";
+ <form name="$form" method="post" action="">
+ <p><span class="LC_nobreak">$lt{'perm'}&nbsp;
+ <label>
+   <input type="radio" name="archivedelete" value="0" checked="checked" />$lt{'no'}
+ </label>
+ &nbsp;
+ <label>
+   <input type="radio" name="archivedelete" value="1" />$lt{'yes'}</label>
+ </span>
+ </p>
+ <input type="hidden" name="phase" value="decompress_cleanup" />
+ <br />$lt{'hows'}
+ <div class="LC_columnSection">
+   <fieldset>
+     <legend>$lt{'cont'}</legend>
+     <input type="button" value="$lt{'addf'}" onclick="javascript:checkAll(document.$form,'display');" />
+     &nbsp;&nbsp;<input type="button" value="$lt{'incd'}" onclick="javascript:checkAll(document.$form,'dependency');" />
+     &nbsp;&nbsp;<input type="button" value="$lt{'disc'}" onclick="javascript:checkAll(document.$form,'discard');" />
+   </fieldset>
+ </div>
+ END
+     return $output.
+            &start_data_table()."\n".
+            $display."\n".
+            &end_data_table()."\n".
+            '<input type="hidden" name="archive_count" value="'.$count.'" />'.
+            $hiddenelem.
+            '<br /><input type="submit" name="archive_submit" value="'.$lt{'save'}.'" />'.
+            '</form>';
+ }
+ sub archive_javascript {
+     my ($startcount,$numitems,$titles,$children) = @_;
+     return unless ((ref($titles) eq 'HASH') && (ref($children) eq 'HASH'));
+     my $maintitle = $env{'form.comment'};
+     my $scripttag = <<START;
+ <script type="text/javascript">
+ // <![CDATA[
+ function checkAll(form,prefix) {
+     var idstr =  new RegExp("^archive_"+prefix+"_\\\\d+\$");
+     for (var i=0; i < form.elements.length; i++) {
+         var id = form.elements[i].id;
+         if ((id != '') && (id != undefined)) {
+             if (idstr.test(id)) {
+                 if (form.elements[i].type == 'radio') {
+                     form.elements[i].checked = true;
+                     var nostart = i-$startcount;
+                     var offset = nostart%7;
+                     var count = (nostart-offset)/7;
+                     dependencyCheck(form,count,offset);
+                 }
+             }
+         }
+     }
+ }
+ function propagateCheck(form,count) {
+     if (count > 0) {
+         var startelement = $startcount + ((count-1) * 7);
+         for (var j=1; j<6; j++) {
+             if ((j != 2) && (j != 4)) {
+                 var item = startelement + j;
+                 if (form.elements[item].type == 'radio') {
+                     if (form.elements[item].checked) {
+                         containerCheck(form,count,j);
+                         break;
+                     }
+                 }
+             }
+         }
+     }
+ }
+ numitems = $numitems
+ var titles = new Array(numitems);
+ var parents = new Array(numitems);
+ for (var i=0; i<numitems; i++) {
+     parents[i] = new Array;
+ }
+ var maintitle = '$maintitle';
+ START
+     foreach my $container (sort { $a <=> $b } (keys(%{$children}))) {
+         my @contents = split(/:/,$children->{$container});
+         for (my $i=0; $i<@contents; $i ++) {
+             $scripttag .= 'parents['.$container.']['.$i.'] = '.$contents[$i]."\n";
+         }
+     }
+     foreach my $key (sort { $a <=> $b } (keys(%{$titles}))) {
+         $scripttag .= "titles[$key] = '".$titles->{$key}."';\n";
+     }
+     $scripttag .= <<END;
+ function containerCheck(form,count,offset) {
+     if (count > 0) {
+         dependencyCheck(form,count,offset);
+         var item = (offset+$startcount)+7*(count-1);
+         form.elements[item].checked = true;
+         if(Object.prototype.toString.call(parents[count]) === '[object Array]') {
+             if (parents[count].length > 0) {
+                 for (var j=0; j<parents[count].length; j++) {
+                     containerCheck(form,parents[count][j],offset);
+                 }
+             }
+         }
+     }
+ }
+ function dependencyCheck(form,count,offset) {
+     if (count > 0) {
+         var chosen = (offset+$startcount)+7*(count-1);
+         var depitem = $startcount + ((count-1) * 7) + 4;
+         var currtype = form.elements[depitem].type;
+         if (form.elements[chosen].value == 'dependency') {
+             document.getElementById('arc_depon_'+count).style.display='block';
+             form.elements[depitem].options.length = 0;
+             form.elements[depitem].options[0] = new Option('Select','',true,true);
+             for (var i=1; i<=numitems; i++) {
+                 if (i == count) {
+                     continue;
+                 }
+                 var startelement = $startcount + (i-1) * 7;
+                 for (var j=1; j<6; j++) {
+                     if ((j != 2) && (j!= 4)) {
+                         var item = startelement + j;
+                         if (form.elements[item].type == 'radio') {
+                             if (form.elements[item].checked) {
+                                 if (form.elements[item].value == 'display') {
+                                     var n = form.elements[depitem].options.length;
+                                     form.elements[depitem].options[n] = new Option(titles[i],i,false,false);
+                                 }
+                             }
+                         }
+                     }
+                 }
+             }
+         } else {
+             document.getElementById('arc_depon_'+count).style.display='none';
+             form.elements[depitem].options.length = 0;
+             form.elements[depitem].options[0] = new Option('Select','',true,true);
+         }
+         titleCheck(form,count,offset);
+     }
+ }
+ function propagateSelect(form,count,offset) {
+     if (count > 0) {
+         var item = (1+offset+$startcount)+7*(count-1);
+         var picked = form.elements[item].options[form.elements[item].selectedIndex].value;
+         if (Object.prototype.toString.call(parents[count]) === '[object Array]') {
+             if (parents[count].length > 0) {
+                 for (var j=0; j<parents[count].length; j++) {
+                     containerSelect(form,parents[count][j],offset,picked);
+                 }
+             }
+         }
+     }
+ }
+ function containerSelect(form,count,offset,picked) {
+     if (count > 0) {
+         var item = (offset+$startcount)+7*(count-1);
+         if (form.elements[item].type == 'radio') {
+             if (form.elements[item].value == 'dependency') {
+                 if (form.elements[item+1].type == 'select-one') {
+                     for (var i=0; i<form.elements[item+1].options.length; i++) {
+                         if (form.elements[item+1].options[i].value == picked) {
+                             form.elements[item+1].selectedIndex = i;
+                             break;
+                         }
+                     }
+                 }
+                 if (Object.prototype.toString.call(parents[count]) === '[object Array]') {
+                     if (parents[count].length > 0) {
+                         for (var j=0; j<parents[count].length; j++) {
+                             containerSelect(form,parents[count][j],offset,picked);
+                         }
+                     }
+                 }
+             }
+         }
+     }
+ }
+ function titleCheck(form,count,offset) {
+     if (count > 0) {
+         var chosen = (offset+$startcount)+7*(count-1);
+         var depitem = $startcount + ((count-1) * 7) + 2;
+         var currtype = form.elements[depitem].type;
+         if (form.elements[chosen].value == 'display') {
+             document.getElementById('arc_title_'+count).style.display='block';
+             if ((count==1) && ((parents[count].length > 0) || (numitems == 1))) {
+                 document.getElementById('archive_title_'+count).value=maintitle;
+             }
+         } else {
+             document.getElementById('arc_title_'+count).style.display='none';
+             if (currtype == 'text') {
+                 document.getElementById('archive_title_'+count).value='';
+             }
+         }
+     }
+     return;
+ }
+ // ]]>
+ </script>
+ END
+     return $scripttag;
+ }
+ sub process_extracted_files {
+     my ($context,$docudom,$docuname,$destination,$dir_root,$hiddenelem) = @_;
+     my $numitems = $env{'form.archive_count'};
+     return unless ($numitems);
+     my @ids=&Apache::lonnet::current_machine_ids();
+     my ($prefix,$pathtocheck,$dir,$ishome,$error,$warning,%toplevelitems,%is_dir,
+         %folders,%containers,%mapinner,%prompttofetch);
+     my $docuhome = &Apache::lonnet::homeserver($docuname,$docudom);
+     if (grep(/^\Q$docuhome\E$/,@ids)) {
+         $prefix = &LONCAPA::propath($docudom,$docuname);
+         $pathtocheck = "$dir_root/$destination";
+         $dir = $dir_root;
+         $ishome = 1;
+     } else {
+         $prefix = $Apache::lonnet::perlvar{'lonDocRoot'};
+         $pathtocheck = "$dir_root/$docudom/$docuname/$destination";
+         $dir = "$dir_root/$docudom/$docuname";
+     }
+     my $currdir = "$dir_root/$destination";
+     (my $docstype,$mapinner{'0'}) = ($destination =~ m{^(docs|supplemental)/(\w+)/});
+     if ($env{'form.folderpath'}) {
+         my @items = split('&',$env{'form.folderpath'});
+         $folders{'0'} = $items[-2];
+         if ($env{'form.folderpath'} =~ /\:1$/) {
+             $containers{'0'}='page';
+         } else {
+             $containers{'0'}='sequence';
+         }
+     }
+     my @archdirs = &get_env_multiple('form.archive_directory');
+     if ($numitems) {
+         for (my $i=1; $i<=$numitems; $i++) {
+             my $path = $env{'form.archive_content_'.$i};
+             if ($path =~ m{^\Q$pathtocheck\E/([^/]+)$}) {
+                 my $item = $1;
+                 $toplevelitems{$item} = $i;
+                 if (grep(/^\Q$i\E$/,@archdirs)) {
+                     $is_dir{$item} = 1;
+                 }
+             }
+         }
+     }
+     my ($output,%children,%parent,%titles,%dirorder,$result);
+     if (keys(%toplevelitems) > 0) {
+         my @contents = sort(keys(%toplevelitems));
+         (my $count,undef) = &get_extracted($docudom,$docuname,$currdir,\%is_dir,\%children,
+                                            \%parent,\@contents,\%dirorder,\%titles);
+     }
+     my (%referrer,%orphaned,%todelete,%todeletedir,%newdest,%newseqid);
+     if ($numitems) {
+         for (my $i=1; $i<=$numitems; $i++) {
+             next if ($env{'form.archive_'.$i} eq 'dependency');
+             my $path = $env{'form.archive_content_'.$i};
+             if ($path =~ /^\Q$pathtocheck\E/) {
+                 if ($env{'form.archive_'.$i} eq 'discard') {
+                     if ($prefix ne '' && $path ne '') {
+                         if (-e $prefix.$path) {
+                             if ((@archdirs > 0) &&
+                                 (grep(/^\Q$i\E$/,@archdirs))) {
+                                 $todeletedir{$prefix.$path} = 1;
+                             } else {
+                                 $todelete{$prefix.$path} = 1;
+                             }
+                         }
+                     }
+                 } elsif ($env{'form.archive_'.$i} eq 'display') {
+                     my ($docstitle,$title,$url,$outer);
+                     ($title) = ($path =~ m{/([^/]+)$});
+                     $docstitle = $env{'form.archive_title_'.$i};
+                     if ($docstitle eq '') {
+                         $docstitle = $title;
+                     }
+                     $outer = 0;
+                     if (ref($dirorder{$i}) eq 'ARRAY') {
+                         if (@{$dirorder{$i}} > 0) {
+                             foreach my $item (reverse(@{$dirorder{$i}})) {
+                                 if ($env{'form.archive_'.$item} eq 'display') {
+                                     $outer = $item;
+                                     last;
+                                 }
+                             }
+                         }
+                     }
+                     my ($errtext,$fatal) =
+                         &LONCAPA::map::mapread('/uploaded/'.$docudom.'/'.$docuname.
+                                                '/'.$folders{$outer}.'.'.
+                                                $containers{$outer});
+                     next if ($fatal);
+                     if ((@archdirs > 0) && (grep(/^\Q$i\E$/,@archdirs))) {
+                         if ($context eq 'coursedocs') {
+                             $mapinner{$i} = time;
+                             $folders{$i} = 'default_'.$mapinner{$i};
+                             $containers{$i} = 'sequence';
+                             my $url = '/uploaded/'.$docudom.'/'.$docuname.'/'.
+                                       $folders{$i}.'.'.$containers{$i};
+                             my $newidx = &LONCAPA::map::getresidx();
+                             $LONCAPA::map::resources[$newidx]=
+                                 $docstitle.':'.$url.':false:normal:res';
+                             push(@LONCAPA::map::order,$newidx);
+                             my ($outtext,$errtext) =
+                                 &LONCAPA::map::storemap('/uploaded/'.$docudom.'/'.
+                                                         $docuname.'/'.$folders{$outer}.
+                                                         '.'.$containers{$outer},1,1);
+                             $newseqid{$i} = $newidx;
+                             unless ($errtext) {
+                                 $result .=  '<li>'.&mt('Folder: [_1] added to course',$docstitle).'</li>'."\n";
+                             }
+                         }
+                     } else {
+                         if ($context eq 'coursedocs') {
+                             my $newidx=&LONCAPA::map::getresidx();
+                             my $url = '/uploaded/'.$docudom.'/'.$docuname.'/'.
+                                       $docstype.'/'.$mapinner{$outer}.'/'.$newidx.'/'.
+                                       $title;
+                             if (!-e "$prefix$dir/$docstype/$mapinner{$outer}") {
+                                 mkdir("$prefix$dir/$docstype/$mapinner{$outer}",0755);
+                             }
+                             if (!-e "$prefix$dir/$docstype/$mapinner{$outer}/$newidx") {
+                                 mkdir("$prefix$dir/$docstype/$mapinner{$outer}/$newidx");
+                             }
+                             if (-e "$prefix$dir/$docstype/$mapinner{$outer}/$newidx") {
+                                 system("mv $prefix$path $prefix$dir/$docstype/$mapinner{$outer}/$newidx/$title");
+                                 $newdest{$i} = "$prefix$dir/$docstype/$mapinner{$outer}/$newidx";
+                                 unless ($ishome) {
+                                     my $fetch = "$newdest{$i}/$title";
+                                     $fetch =~ s/^\Q$prefix$dir\E//;
+                                     $prompttofetch{$fetch} = 1;
+                                 }
+                             }
+                             $LONCAPA::map::resources[$newidx]=
+                                 $docstitle.':'.$url.':false:normal:res';
+                             push(@LONCAPA::map::order, $newidx);
+                             my ($outtext,$errtext)=
+                                 &LONCAPA::map::storemap('/uploaded/'.$docudom.'/'.
+                                                         $docuname.'/'.$folders{$outer}.
+                                                         '.'.$containers{$outer},1,1);
+                             unless ($errtext) {
+                                 if (-e "$prefix$dir/$docstype/$mapinner{$outer}/$newidx/$title") {
+                                     $result .= '<li>'.&mt('File: [_1] added to course',$docstitle).'</li>'."\n";
+                                 }
+                             }
+                         }
+                     }
+                 }
+             } else {
+                 $warning .= &mt('Item extracted from archive: [_1] has unexpected path.',$path).'<br />';
+             }
+         }
+         for (my $i=1; $i<=$numitems; $i++) {
+             next unless ($env{'form.archive_'.$i} eq 'dependency');
+             my $path = $env{'form.archive_content_'.$i};
+             if ($path =~ /^\Q$pathtocheck\E/) {
+                 my ($title) = ($path =~ m{/([^/]+)$});
+                 $referrer{$i} = $env{'form.archive_dependent_on_'.$i};
+                 if ($env{'form.archive_'.$referrer{$i}} eq 'display') {
+                     if (ref($dirorder{$i}) eq 'ARRAY') {
+                         my ($itemidx,$fullpath,$relpath);
+                         if (ref($dirorder{$referrer{$i}}) eq 'ARRAY') {
+                             my $container = $dirorder{$referrer{$i}}->[-1];
+                             for (my $j=0; $j<@{$dirorder{$i}}; $j++) {
+                                 if ($dirorder{$i}->[$j] eq $container) {
+                                     $itemidx = $j;
+                                 }
+                             }
+                         }
+                         if ($itemidx eq '') {
+                             $itemidx =  0;
+                         }
+                         if (grep(/^\Q$referrer{$i}\E$/,@archdirs)) {
+                             if ($mapinner{$referrer{$i}}) {
+                                 $fullpath = "$prefix$dir/$docstype/$mapinner{$referrer{$i}}";
+                                 for (my $j=$itemidx; $j<@{$dirorder{$i}}; $j++) {
+                                     if (grep(/^\Q$dirorder{$i}->[$j]\E$/,@archdirs)) {
+                                         unless (defined($newseqid{$dirorder{$i}->[$j]})) {
+                                             $fullpath .= '/'.$titles{$dirorder{$i}->[$j]};
+                                             $relpath .= '/'.$titles{$dirorder{$i}->[$j]};
+                                             if (!-e $fullpath) {
+                                                 mkdir($fullpath,0755);
+                                             }
+                                         }
+                                     } else {
+                                         last;
+                                     }
+                                 }
+                             }
+                         } elsif ($newdest{$referrer{$i}}) {
+                             $fullpath = $newdest{$referrer{$i}};
+                             for (my $j=$itemidx; $j<@{$dirorder{$i}}; $j++) {
+                                 if ($env{'form.archive_'.$dirorder{$i}->[$j]} eq 'discard') {
+                                     $orphaned{$i} = $env{'form.archive_'.$dirorder{$i}->[$j]};
+                                     last;
+                                 } elsif (grep(/^\Q$dirorder{$i}->[$j]\E$/,@archdirs)) {
+                                     unless (defined($newseqid{$dirorder{$i}->[$j]})) {
+                                         $fullpath .= '/'.$titles{$dirorder{$i}->[$j]};
+                                         $relpath .= '/'.$titles{$dirorder{$i}->[$j]};
+                                         if (!-e $fullpath) {
+                                             mkdir($fullpath,0755);
+                                         }
+                                     }
+                                 } else {
+                                     last;
+                                 }
+                             }
+                         }
+                         if ($fullpath ne '') {
+                             if (-e "$prefix$path") {
+                                 system("mv $prefix$path $fullpath/$title");
+                             }
+                             if (-e "$fullpath/$title") {
+                                 my $showpath;
+                                 if ($relpath ne '') {
+                                     $showpath = "$relpath/$title";
+                                 } else {
+                                     $showpath = "/$title";
+                                 }
+                                 $result .= '<li>'.&mt('[_1] included as a dependency',$showpath).'</li>'."\n";
+                             }
+                             unless ($ishome) {
+                                 my $fetch = "$fullpath/$title";
+                                 $fetch =~ s/^\Q$prefix$dir\E//;
+                                 $prompttofetch{$fetch} = 1;
+                             }
+                         }
+                     }
+                 } elsif ($env{'form.archive_'.$referrer{$i}} eq 'discard') {
+                     $warning .= &mt('[_1] is a dependency of [_2], which was discarded.',
+                                     $path,$env{'form.archive_content_'.$referrer{$i}}).'<br />';
+                 }
+             } else {
+                 $warning .= &mt('Item extracted from archive: [_1] has unexpected path.',$path).'<br />';
+             }
+         }
+         if (keys(%todelete)) {
+             foreach my $key (keys(%todelete)) {
+                 unlink($key);
+             }
+         }
+         if (keys(%todeletedir)) {
+             foreach my $key (keys(%todeletedir)) {
+                 rmdir($key);
+             }
+         }
+         foreach my $dir (sort(keys(%is_dir))) {
+             if (($pathtocheck ne '') && ($dir ne ''))  {
+                 &cleanup_empty_dirs($prefix."$pathtocheck/$dir");
+             }
+         }
+         if ($result ne '') {
+             $output .= '<ul>'."\n".
+                        $result."\n".
+                        '</ul>';
+         }
+         unless ($ishome) {
+             my $replicationfail;
+             foreach my $item (keys(%prompttofetch)) {
+                 my $fetchresult= &Apache::lonnet::reply('fetchuserfile:'.$item,$docuhome);
+                 unless ($fetchresult eq 'ok') {
+                     $replicationfail .= '<li>'.$item.'</li>'."\n";
+                 }
+             }
+             if ($replicationfail) {
+                 $output .= '<p class="LC_error">'.
+                            &mt('Course home server failed to retrieve:').'<ul>'.
+                            $replicationfail.
+                            '</ul></p>';
+             }
+         }
+     } else {
+         $warning = &mt('No items found in archive.');
+     }
+     if ($error) {
+         $output .= '<p class="LC_error">'.&mt('Not extracted.').'<br />'.
+                    $error.'</p>'."\n";
+     }
+     if ($warning) {
+         $output .= '<p class="LC_warning">'.$warning.'</p>'."\n";
+     }
+     return $output;
+ }
+ sub cleanup_empty_dirs {
+     my ($path) = @_;
+     if (($path ne '') && (-d $path)) {
+         if (opendir(my $dirh,$path)) {
+             my @dircontents = grep(!/^\./,readdir($dirh));
+             my $numitems = 0;
+             foreach my $item (@dircontents) {
+                 if (-d "$path/$item") {
+                     &cleanup_empty_dirs("$path/$item");
+                     if (-e "$path/$item") {
+                         $numitems ++;
+                     }
+                 } else {
+                     $numitems ++;
+                 }
+             }
+             if ($numitems == 0) {
+                 rmdir($path);
+             }
+             closedir($dirh);
+         }
+     }
+     return;
+ }
+ =pod
+ =item * &get_folder_hierarchy()
+ Provides hierarchy of names of folders/sub-folders containing the current
+ item,
+ Inputs: 3
+      - $navmap - navmaps object
+      - $map - url for map (either the trigger itself, or map containing
+                            the resource, which is the trigger).
+      - $showitem - 1 => show title for map itself; 0 => do not show.
+ Outputs: 1 @pathitems - array of folder/subfolder names.
+ =cut
+ sub get_folder_hierarchy {
+     my ($navmap,$map,$showitem) = @_;
+     my @pathitems;
+     if (ref($navmap)) {
+         my $mapres = $navmap->getResourceByUrl($map);
+         if (ref($mapres)) {
+             my $pcslist = $mapres->map_hierarchy();
+             if ($pcslist ne '') {
+                 my @pcs = split(/,/,$pcslist);
+                 foreach my $pc (@pcs) {
+                     if ($pc == 1) {
+                         push(@pathitems,&mt('Main Content'));
+                     } else {
+                         my $res = $navmap->getByMapPc($pc);
+                         if (ref($res)) {
+                             my $title = $res->compTitle();
+                             $title =~ s/\W+/_/g;
+                             if ($title ne '') {
+                                 push(@pathitems,$title);
+                             }
+                         }
+                     }
+                 }
+             }
+             if ($showitem) {
+                 if ($mapres->{ID} eq '0.0') {
+                     push(@pathitems,&mt('Main Content'));
+                 } else {
+                     my $maptitle = $mapres->compTitle();
+                     $maptitle =~ s/\W+/_/g;
+                     if ($maptitle ne '') {
+                         push(@pathitems,$maptitle);
+                     }
+                 }
+             }
+         }
+     }
+     return @pathitems;
+ }
+ =pod
+ =item * &get_turnedin_filepath()
+ Determines path in a user's portfolio file for storage of files uploaded
+ to a specific essayresponse or dropbox item.
+ Inputs: 3 required + 1 optional.
+ $symb is symb for resource, $uname and $udom are for current user (required).
+ $caller is optional (can be "submission", if routine is called when storing
+ an upoaded file when "Submit Answer" button was pressed).
+ Returns array containing $path and $multiresp.
+ $path is path in portfolio.  $multiresp is 1 if this resource contains more
+ than one file upload item.  Callers of routine should append partid as a
+ subdirectory to $path in cases where $multiresp is 1.
+ Called by: homework/essayresponse.pm and homework/structuretags.pm
+ =cut
+ sub get_turnedin_filepath {
+     my ($symb,$uname,$udom,$caller) = @_;
+     my ($map,$resid,$resurl)=&Apache::lonnet::decode_symb($symb);
+     my $turnindir;
+     my %userhash = &Apache::lonnet::userenvironment($udom,$uname,'turnindir');
+     $turnindir = $userhash{'turnindir'};
+     my ($path,$multiresp);
+     if ($turnindir eq '') {
+         if ($caller eq 'submission') {
+             $turnindir = &mt('turned in');
+             $turnindir =~ s/\W+/_/g;
+             my %newhash = (
+                             'turnindir' => $turnindir,
+                           );
+             &Apache::lonnet::put('environment',\%newhash,$udom,$uname);
+         }
+     }
+     if ($turnindir ne '') {
+         $path = '/'.$turnindir.'/';
+         my ($multipart,$turnin,@pathitems);
+         my $navmap = Apache::lonnavmaps::navmap->new();
+         if (defined($navmap)) {
+             my $mapres = $navmap->getResourceByUrl($map);
+             if (ref($mapres)) {
+                 my $pcslist = $mapres->map_hierarchy();
+                 if ($pcslist ne '') {
+                     foreach my $pc (split(/,/,$pcslist)) {
+                         my $res = $navmap->getByMapPc($pc);
+                         if (ref($res)) {
+                             my $title = $res->compTitle();
+                             $title =~ s/\W+/_/g;
+                             if ($title ne '') {
+                                 if (($pc > 1) && (length($title) > 12)) {
+                                     $title = substr($title,0,12);
+                                 }
+                                 push(@pathitems,$title);
+                             }
+                         }
+                     }
+                 }
+                 my $maptitle = $mapres->compTitle();
+                 $maptitle =~ s/\W+/_/g;
+                 if ($maptitle ne '') {
+                     if (length($maptitle) > 12) {
+                         $maptitle = substr($maptitle,0,12);
+                     }
+                     push(@pathitems,$maptitle);
+                 }
+                 unless ($env{'request.state'} eq 'construct') {
+                     my $res = $navmap->getBySymb($symb);
+                     if (ref($res)) {
+                         my $partlist = $res->parts();
+                         my $totaluploads = 0;
+                         if (ref($partlist) eq 'ARRAY') {
+                             foreach my $part (@{$partlist}) {
+                                 my @types = $res->responseType($part);
+                                 my @ids = $res->responseIds($part);
+                                 for (my $i=0; $i < scalar(@ids); $i++) {
+                                     if ($types[$i] eq 'essay') {
+                                         my $partid = $part.'_'.$ids[$i];
+                                         if (&Apache::lonnet::EXT("resource.$partid.uploadedfiletypes") ne '') {
+                                             $totaluploads ++;
+                                         }
+                                     }
+                                 }
+                             }
+                             if ($totaluploads > 1) {
+                                 $multiresp = 1;
+                             }
+                         }
+                     }
+                 }
+             } else {
+                 return;
+             }
+         } else {
+             return;
+         }
+         my $restitle=&Apache::lonnet::gettitle($symb);
+         $restitle =~ s/\W+/_/g;
+         if ($restitle eq '') {
+             $restitle = ($resurl =~ m{/[^/]+$});
+             if ($restitle eq '') {
+                 $restitle = time;
+             }
+         }
+         if (length($restitle) > 12) {
+             $restitle = substr($restitle,0,12);
+         }
+         push(@pathitems,$restitle);
+         $path .= join('/',@pathitems);
+     }
+     return ($path,$multiresp);
+ }
+ =pod
+ =back
  =head1 CSV Upload/Handling functions
  =over 4
- =item * upfile_store($r)
+ =item * &upfile_store($r)
  Store uploaded file, $r should be the HTTP Request object,
  needs $env{'form.upfile'}
- Line 3395  sub upfile_store {
+ Line 13559  sub upfile_store {
  =pod
- =item * load_tmp_file($r)
+ =item * &load_tmp_file($r)
  Load uploaded file from tmp, $r should be the HTTP Request object,
  needs $env{'form.datatoken'},
- Line 3419  sub load_tmp_file {
+ Line 13583  sub load_tmp_file {
  =pod
- =item * upfile_record_sep()
+ =item * &upfile_record_sep()
  Separate uploaded file into records
  returns array of records,
- Line 3441  sub upfile_record_sep {
+ Line 13605  sub upfile_record_sep {
  =pod
- =item * record_sep($record)
+ =item * &record_sep($record)
  Separate a record into fields $record should be an item from the upfile_record_sep(), needs $env{'form.upfiletype'}
- Line 3458  sub record_sep {
+ Line 13622  sub record_sep {
      if ($env{'form.upfiletype'} eq 'xml') {
      } elsif ($env{'form.upfiletype'} eq 'space') {
          my $i=0;
-         foreach (split(/\s+/,$record)) {
+         foreach my $field (split(/\s+/,$record)) {
-             my $field=$_;
              $field=~s/^(\"|\')//;
              $field=~s/(\"|\')$//;
              $components{&takeleft($i)}=$field;
- Line 3467  sub record_sep {
+ Line 13630  sub record_sep {
          }
      } elsif ($env{'form.upfiletype'} eq 'tab') {
          my $i=0;
-         foreach (split(/\t/,$record)) {
+         foreach my $field (split(/\t/,$record)) {
-             my $field=$_;
              $field=~s/^(\"|\')//;
              $field=~s/(\"|\')$//;
              $components{&takeleft($i)}=$field;
              $i++;
          }
      } else {
-         my @allfields=split(/\,/,$record);
+         my $separator=',';
+         if ($env{'form.upfiletype'} eq 'semisv') {
+             $separator=';';
+         }
          my $i=0;
-         my $j;
+ # the character we are looking for to indicate the end of a quote or a record
-         for ($j=0;$j<=$#allfields;$j++) {
+         my $looking_for=$separator;
-             my $field=$allfields[$j];
+ # do not add the characters to the fields
-             if ($field=~/^\s*(\"|\')/) {
+         my $ignore=0;
- 		my $delimiter=$1;
+ # we just encountered a separator (or the beginning of the record)
-                 while (($field!~/$delimiter$/) && ($j<$#allfields)) {
+         my $just_found_separator=1;
- 		    $j++;
+ # store the field we are working on here
- 		    $field.=','.$allfields[$j];
+         my $field='';
- 		}
+ # work our way through all characters in record
-                 $field=~s/^\s*$delimiter//;
+         foreach my $character ($record=~/(.)/g) {
-                 $field=~s/$delimiter\s*$//;
+             if ($character eq $looking_for) {
+                if ($character ne $separator) {
+ # Found the end of a quote, again looking for separator
+                   $looking_for=$separator;
+                   $ignore=1;
+                } else {
+ # Found a separator, store away what we got
+                   $components{&takeleft($i)}=$field;
+ 	          $i++;
+                   $just_found_separator=1;
+                   $ignore=0;
+                   $field='';
+                }
+                next;
              }
-             $components{&takeleft($i)}=$field;
+ # single or double quotation marks after a separator indicate beginning of a quote
- 	    $i++;
+ # we are now looking for the end of the quote and need to ignore separators
+             if ((($character eq '"') || ($character eq "'")) && ($just_found_separator))  {
+                $looking_for=$character;
+                next;
+             }
+ # ignore would be true after we reached the end of a quote
+             if ($ignore) { next; }
+             if (($just_found_separator) && ($character=~/\s/)) { next; }
+             $field.=$character;
+             $just_found_separator=0;
          }
+ # catch the very last entry, since we never encountered the separator
+         $components{&takeleft($i)}=$field;
      }
      return %components;
  }
- Line 3501  sub record_sep {
+ Line 13690  sub record_sep {
  =pod
- =item * upfile_select_html()
+ =item * &upfile_select_html()
  Return HTML code to select a file from the users machine and specify
  the file type.
- Line 3513  the file type.
+ Line 13702  the file type.
  sub upfile_select_html {
      my %Types = (
                   csv   => &mt('CSV (comma separated values, spreadsheet)'),
+                  semisv => &mt('Semicolon separated values'),
                   space => &mt('Space separated'),
                   tab   => &mt('Tabulator separated'),
  #                 xml   => &mt('HTML/XML'),
                   );
      my $Str = '<input type="file" name="upfile" size="50" />'.
-         '<br />Type: <select name="upfiletype">';
+         '<br />'.&mt('Type').': <select name="upfiletype">';
      foreach my $type (sort(keys(%Types))) {
          $Str .= '<option value="'.$type.'" >'.$Types{$type}."</option>\n";
      }
- Line 3526  sub upfile_select_html {
+ Line 13716  sub upfile_select_html {
      return $Str;
  }
+ sub get_samples {
+     my ($records,$toget) = @_;
+     my @samples=({});
+     my $got=0;
+     foreach my $rec (@$records) {
+ 	my %temp = &record_sep($rec);
+ 	if (! grep(/\S/, values(%temp))) { next; }
+ 	if (%temp) {
+ 	    $samples[$got]=\%temp;
+ 	    $got++;
+ 	    if ($got == $toget) { last; }
+ 	}
+     }
+     return \@samples;
+ }
  ######################################################
  ######################################################
  =pod
- =item * csv_print_samples($r,$records)
+ =item * &csv_print_samples($r,$records)
  Prints a table of sample values from each column uploaded $r is an
  Apache Request ref, $records is an arrayref from
- Line 3543  Apache Request ref, $records is an array
+ Line 13749  Apache Request ref, $records is an array
  ######################################################
  sub csv_print_samples {
      my ($r,$records) = @_;
-     my (%sone,%stwo,%sthree);
+     my $samples = &get_samples($records,5);
-     %sone=&record_sep($$records[0]);
-     if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
+     $r->print(&mt('Samples').'<br />'.&start_data_table().
-     if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
+               &start_data_table_header_row());
-     #
+     foreach my $sample (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
-     $r->print(&mt('Samples').'<br /><table border="2"><tr>');
+         $r->print('<th>'.&mt('Column [_1]',($sample+1)).'</th>'); }
-     foreach (sort({$a <=> $b} keys(%sone))) {
+     $r->print(&end_data_table_header_row());
-         $r->print('<th>'.&mt('Column&nbsp;[_1]',($_+1)).'</th>'); }
+     foreach my $hash (@$samples) {
-     $r->print('</tr>');
+ 	$r->print(&start_data_table_row());
-     foreach my $hash (\%sone,\%stwo,\%sthree) {
+ 	foreach my $sample (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
- 	$r->print('<tr>');
- 	foreach (sort({$a <=> $b} keys(%sone))) {
  	    $r->print('<td>');
- 	    if (defined($$hash{$_})) { $r->print($$hash{$_}); }
+ 	    if (defined($$hash{$sample})) { $r->print($$hash{$sample}); }
  	    $r->print('</td>');
  	}
- 	$r->print('</tr>');
+ 	$r->print(&end_data_table_row());
      }
-     $r->print('</tr></table><br />'."\n");
+     $r->print(&end_data_table().'<br />'."\n");
  }
  ######################################################
- Line 3569  sub csv_print_samples {
+ Line 13773  sub csv_print_samples {
  =pod
- =item * csv_print_select_table($r,$records,$d)
+ =item * &csv_print_select_table($r,$records,$d)
  Prints a table to create associations between values and table columns.
- Line 3583  $d is an array of 2 element arrays (inte
+ Line 13787  $d is an array of 2 element arrays (inte
  ######################################################
  sub csv_print_select_table {
      my ($r,$records,$d) = @_;
-     my $i=0;my %sone;
+     my $i=0;
-     %sone=&record_sep($$records[0]);
+     my $samples = &get_samples($records,1);
      $r->print(&mt('Associate columns with student attributes.')."\n".
- 	     '<table border="2"><tr>'.
+ 	      &start_data_table().&start_data_table_header_row().
                '<th>'.&mt('Attribute').'</th>'.
-               '<th>'.&mt('Column').'</th></tr>'."\n");
+               '<th>'.&mt('Column').'</th>'.
-     foreach (@$d) {
+               &end_data_table_header_row()."\n");
- 	my ($value,$display,$defaultcol)=@{ $_ };
+     foreach my $array_ref (@$d) {
- 	$r->print('<tr><td>'.$display.'</td>');
+ 	my ($value,$display,$defaultcol)=@{ $array_ref };
+ 	$r->print(&start_data_table_row().'<td>'.$display.'</td>');
- 	$r->print('<td><select name=f'.$i.
+ 	$r->print('<td><select name="f'.$i.'"'.
  		  ' onchange="javascript:flip(this.form,'.$i.');">');
  	$r->print('<option value="none"></option>');
- 	foreach (sort({$a <=> $b} keys(%sone))) {
+ 	foreach my $sample (sort({$a <=> $b} keys(%{ $samples->[0] }))) {
- 	    $r->print('<option value="'.$_.'"'.
+ 	    $r->print('<option value="'.$sample.'"'.
-                       ($_ eq $defaultcol ? ' selected="selected" ' : '').
+                       ($sample eq $defaultcol ? ' selected="selected" ' : '').
-                       '>Column '.($_+1).'</option>');
+                       '>'.&mt('Column [_1]',($sample+1)).'</option>');
  	}
- 	$r->print('</select></td></tr>'."\n");
+ 	$r->print('</select></td>'.&end_data_table_row()."\n");
  	$i++;
      }
+     $r->print(&end_data_table());
      $i--;
      return $i;
  }
- Line 3613  sub csv_print_select_table {
+ Line 13819  sub csv_print_select_table {
  =pod
- =item * csv_samples_select_table($r,$records,$d)
+ =item * &csv_samples_select_table($r,$records,$d)
  Prints a table of sample values from the upload and can make associate samples to internal names.
- Line 3627  $d is an array of 2 element arrays (inte
+ Line 13833  $d is an array of 2 element arrays (inte
  ######################################################
  sub csv_samples_select_table {
      my ($r,$records,$d) = @_;
-     my %sone; my %stwo; my %sthree;
      my $i=0;
      #
-     $r->print('<table border=2><tr><th>'.
+     my $max_samples = 5;
-               &mt('Field').'</th><th>'.&mt('Samples').'</th></tr>');
+     my $samples = &get_samples($records,$max_samples);
-     %sone=&record_sep($$records[0]);
+     $r->print(&start_data_table().
-     if (defined($$records[1])) {%stwo=&record_sep($$records[1]);}
+               &start_data_table_header_row().'<th>'.
-     if (defined($$records[2])) {%sthree=&record_sep($$records[2]);}
+               &mt('Field').'</th><th>'.&mt('Samples').'</th>'.
-     #
+               &end_data_table_header_row());
-     foreach (sort keys %sone) {
- 	$r->print('<tr><td><select name="f'.$i.'"'.
+     foreach my $key (sort(keys(%{ $samples->[0] }))) {
+ 	$r->print(&start_data_table_row().'<td><select name="f'.$i.'"'.
  		  ' onchange="javascript:flip(this.form,'.$i.');">');
- 	foreach (@$d) {
+ 	foreach my $option (@$d) {
- 	    my ($value,$display,$defaultcol)=@{ $_ };
+ 	    my ($value,$display,$defaultcol)=@{ $option };
  	    $r->print('<option value="'.$value.'"'.
                        ($i eq $defaultcol ? ' selected="selected" ':'').'>'.
                        $display.'</option>');
  	}
  	$r->print('</select></td><td>');
- 	if (defined($sone{$_})) { $r->print($sone{$_}."<br />\n"); }
+ 	foreach my $line (0..($max_samples-1)) {
- 	if (defined($stwo{$_})) { $r->print($stwo{$_}."<br />\n"); }
+ 	    if (defined($samples->[$line]{$key})) {
- 	if (defined($sthree{$_})) { $r->print($sthree{$_}."<br />\n"); }
+ 		$r->print($samples->[$line]{$key}."<br />\n");
- 	$r->print('</td></tr>');
+ 	    }
+ 	}
+ 	$r->print('</td>'.&end_data_table_row());
  	$i++;
      }
+     $r->print(&end_data_table());
      $i--;
      return($i);
  }
- Line 3661  sub csv_samples_select_table {
+ Line 13870  sub csv_samples_select_table {
  =pod
- =item clean_excel_name($name)
+ =item * &clean_excel_name($name)
  Returns a replacement for $name which does not contain any illegal characters.
- Line 3680  sub clean_excel_name {
+ Line 13889  sub clean_excel_name {
  =pod
- =item * check_if_partid_hidden($id,$symb,$udom,$uname)
+ =item * &check_if_partid_hidden($id,$symb,$udom,$uname)
  Returns either 1 or undef
- Line 3721  sub check_if_partid_hidden {
+ Line 13930  sub check_if_partid_hidden {
  =over 4
- =item get_cgi_id
+ =item * &get_cgi_id()
  Inputs: none
- Line 3745  sub get_cgi_id {
+ Line 13954  sub get_cgi_id {
  =pod
- =item DrawBarGraph
+ =item * &DrawBarGraph()
  Facilitates the plotting of data in a (stacked) bar graph.
  Puts plot definition data into the users environment in order for
- Line 3861  sub DrawBarGraph {
+ Line 14070  sub DrawBarGraph {
      $Title  = '' if (! defined($Title));
      $xlabel = '' if (! defined($xlabel));
      $ylabel = '' if (! defined($ylabel));
-     $ValuesHash{$id.'.title'}    = &Apache::lonnet::escape($Title);
+     $ValuesHash{$id.'.title'}    = &escape($Title);
-     $ValuesHash{$id.'.xlabel'}   = &Apache::lonnet::escape($xlabel);
+     $ValuesHash{$id.'.xlabel'}   = &escape($xlabel);
-     $ValuesHash{$id.'.ylabel'}   = &Apache::lonnet::escape($ylabel);
+     $ValuesHash{$id.'.ylabel'}   = &escape($ylabel);
      $ValuesHash{$id.'.y_max_value'} = $Max;
      $ValuesHash{$id.'.NumBars'}  = $NumBars;
      $ValuesHash{$id.'.NumSets'}  = $NumSets;
- Line 3880  sub DrawBarGraph {
+ Line 14089  sub DrawBarGraph {
          $ValuesHash{$id.'.'.$key} = $value;
      }
      #
-     &Apache::lonnet::appenv(%ValuesHash);
+     &Apache::lonnet::appenv(\%ValuesHash);
      return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
  }
- Line 3889  sub DrawBarGraph {
+ Line 14098  sub DrawBarGraph {
  =pod
- =item DrawXYGraph
+ =item * &DrawXYGraph()
  Facilitates the plotting of data in an XY graph.
  Puts plot definition data into the users environment in order for
- Line 3943  sub DrawXYGraph {
+ Line 14152  sub DrawXYGraph {
      $ylabel = '' if (! defined($ylabel));
      my %ValuesHash =
          (
-          $id.'.title'  => &Apache::lonnet::escape($Title),
+          $id.'.title'  => &escape($Title),
-          $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
+          $id.'.xlabel' => &escape($xlabel),
-          $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
+          $id.'.ylabel' => &escape($ylabel),
           $id.'.y_max_value'=> $Max,
           $id.'.labels'     => join(',',@$Xlabels),
           $id.'.PlotType'   => 'XY',
- Line 3970  sub DrawXYGraph {
+ Line 14179  sub DrawXYGraph {
          $ValuesHash{$id.'.'.$key} = $value;
      }
      #
-     &Apache::lonnet::appenv(%ValuesHash);
+     &Apache::lonnet::appenv(\%ValuesHash);
      return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
  }
- Line 3979  sub DrawXYGraph {
+ Line 14188  sub DrawXYGraph {
  =pod
- =item DrawXYYGraph
+ =item * &DrawXYYGraph()
  Facilitates the plotting of data in an XY graph with two Y axes.
  Puts plot definition data into the users environment in order for
- Line 4040  sub DrawXYYGraph {
+ Line 14249  sub DrawXYYGraph {
      $ylabel = '' if (! defined($ylabel));
      my %ValuesHash =
          (
-          $id.'.title'  => &Apache::lonnet::escape($Title),
+          $id.'.title'  => &escape($Title),
-          $id.'.xlabel' => &Apache::lonnet::escape($xlabel),
+          $id.'.xlabel' => &escape($xlabel),
-          $id.'.ylabel' => &Apache::lonnet::escape($ylabel),
+          $id.'.ylabel' => &escape($ylabel),
           $id.'.labels' => join(',',@$Xlabels),
           $id.'.PlotType' => 'XY',
           $id.'.NumSets' => 2,
- Line 4072  sub DrawXYYGraph {
+ Line 14281  sub DrawXYYGraph {
          $ValuesHash{$id.'.'.$key} = $value;
      }
      #
-     &Apache::lonnet::appenv(%ValuesHash);
+     &Apache::lonnet::appenv(\%ValuesHash);
      return '<img src="/cgi-bin/graph.png?'.$identifier.'" border="1" />';
  }
- Line 4089  Bad place for them but what the hell.
+ Line 14298  Bad place for them but what the hell.
  =over 4
- =item &chartlink
+ =item * &chartlink()
  Returns a link to the chart for a specific student.
- Line 4114  Inputs:
+ Line 14323  Inputs:
  sub chartlink {
      my ($linktext, $sname, $sdomain) = @_;
      my $link = '<a href="/adm/statistics?reportSelected=student_assessment'.
-         '&amp;SelectedStudent='.&Apache::lonnet::escape($sname.':'.$sdomain).
+         '&amp;SelectedStudent='.&escape($sname.':'.$sdomain).
          '&amp;chartoutputmode='.HTML::Entities::encode('html, with all links').
         '">'.$linktext.'</a>';
  }
- Line 4128  sub chartlink {
+ Line 14337  sub chartlink {
  =over 4
- =item &restore_course_settings
+ =item * &restore_course_settings()
- =item &store_course_settings
+ =item * &store_course_settings()
  Restores/Store indicated form parameters from the course environment.
  Will not overwrite existing values of the form parameters.
- Line 4144  a hash ref describing the data to be sto
+ Line 14353  a hash ref describing the data to be sto
      'chartoutputmode' => 'scalar',
      'chartoutputdata' => 'scalar',
      'Section' => 'array',
+     'Group' => 'array',
      'StudentData' => 'array',
      'Maps' => 'array');
  Returns: both routines return nothing
+ =back
  =cut
  #######################################################
  #######################################################
  sub store_course_settings {
+     return &store_settings($env{'request.course.id'},@_);
+ }
+ sub store_settings {
      # save to the environment
      # appenv the same items, just to be safe
-     my $courseid = $env{'request.course.id'};
+     my $udom  = $env{'user.domain'};
-     my $coursedom = $env{'course.'.$courseid.'.domain'};
+     my $uname = $env{'user.name'};
-     my ($prefix,$Settings) = @_;
+     my ($context,$prefix,$Settings) = @_;
      my %SaveHash;
      my %AppHash;
      while (my ($setting,$type) = each(%$Settings)) {
-         my $basename = 'internal.'.$prefix.'.'.$setting;
+         my $basename = join('.','internal',$context,$prefix,$setting);
-         my $envname = 'course.'.$courseid.'.'.$basename;
+         my $envname = 'environment.'.$basename;
          if (exists($env{'form.'.$setting})) {
              # Save this value away
              if ($type eq 'scalar' &&
- Line 4176  sub store_course_settings {
+ Line 14392  sub store_course_settings {
                  if (ref($env{'form.'.$setting})) {
                      $stored_form = join(',',
                                          map {
-                                             &Apache::lonnet::escape($_);
+                                             &escape($_);
                                          } sort(@{$env{'form.'.$setting}}));
                  } else {
                      $stored_form =
-                         &Apache::lonnet::escape($env{'form.'.$setting});
+                         &escape($env{'form.'.$setting});
                  }
                  # Determine if the array contents are the same.
                  if ($stored_form ne $env{$envname}) {
- Line 4191  sub store_course_settings {
+ Line 14407  sub store_course_settings {
          }
      }
      my $put_result = &Apache::lonnet::put('environment',\%SaveHash,
-                                           $coursedom,
+                                           $udom,$uname);
-                                           $env{'course.'.$courseid.'.num'});
      if ($put_result !~ /^(ok|delayed)/) {
          &Apache::lonnet::logthis('unable to save form parameters, '.
                                   'got error:'.$put_result);
      }
      # Make sure these settings stick around in this session, too
-     &Apache::lonnet::appenv(%AppHash);
+     &Apache::lonnet::appenv(\%AppHash);
      return;
  }
  sub restore_course_settings {
-     my $courseid = $env{'request.course.id'};
+     return &restore_settings($env{'request.course.id'},@_);
-     my ($prefix,$Settings) = @_;
+ }
+ sub restore_settings {
+     my ($context,$prefix,$Settings) = @_;
      while (my ($setting,$type) = each(%$Settings)) {
          next if (exists($env{'form.'.$setting}));
-         my $envname = 'course.'.$courseid.'.internal.'.$prefix.
+         my $envname = 'environment.internal.'.$context.'.'.$prefix.
              '.'.$setting;
          if (exists($env{$envname})) {
              if ($type eq 'scalar') {
- Line 4215  sub restore_course_settings {
+ Line 14433  sub restore_course_settings {
              } elsif ($type eq 'array') {
                  $env{'form.'.$setting} = [
                                             map {
-                                                &Apache::lonnet::unescape($_);
+                                                &unescape($_);
                                             } split(',',$env{$envname})
                                             ];
              }
- Line 4223  sub restore_course_settings {
+ Line 14441  sub restore_course_settings {
      }
  }
+ #######################################################
+ #######################################################
+ =pod
+ =head1 Domain E-mail Routines
+ =over 4
+ =item * &build_recipient_list()
+ Build recipient lists for following types of e-mail:
+ (a) Error Reports, (b) Package Updates, (c) lonstatus warnings/errors
+ (d) Help requests, (e) Course requests needing approval, (f) loncapa
+ module change checking, student/employee ID conflict checks, as
+ generated by lonerrorhandler.pm, CHECKRPMS, loncron,
+ lonsupportreq.pm, loncoursequeueadmin.pm, searchcat.pl respectively.
+ Inputs:
+ defmail (scalar - email address of default recipient),
+ mailing type (scalar: errormail, packagesmail, helpdeskmail,
+ requestsmail, updatesmail, or idconflictsmail).
+ defdom (domain for which to retrieve configuration settings),
+ origmail (scalar - email address of recipient from loncapa.conf,
+ i.e., predates configuration by DC via domainprefs.pm
+ Returns: comma separated list of addresses to which to send e-mail.
+ =back
+ =cut
+ ############################################################
+ ############################################################
+ sub build_recipient_list {
+     my ($defmail,$mailing,$defdom,$origmail) = @_;
+     my @recipients;
+     my $otheremails;
+     my %domconfig =
+          &Apache::lonnet::get_dom('configuration',['contacts'],$defdom);
+     if (ref($domconfig{'contacts'}) eq 'HASH') {
+         if (exists($domconfig{'contacts'}{$mailing})) {
+             if (ref($domconfig{'contacts'}{$mailing}) eq 'HASH') {
+                 my @contacts = ('adminemail','supportemail');
+                 foreach my $item (@contacts) {
+                     if ($domconfig{'contacts'}{$mailing}{$item}) {
+                         my $addr = $domconfig{'contacts'}{$item};
+                         if (!grep(/^\Q$addr\E$/,@recipients)) {
+                             push(@recipients,$addr);
+                         }
+                     }
+                     $otheremails = $domconfig{'contacts'}{$mailing}{'others'};
+                 }
+             }
+         } elsif ($origmail ne '') {
+             push(@recipients,$origmail);
+         }
+     } elsif ($origmail ne '') {
+         push(@recipients,$origmail);
+     }
+     if (defined($defmail)) {
+         if ($defmail ne '') {
+             push(@recipients,$defmail);
+         }
+     }
+     if ($otheremails) {
+         my @others;
+         if ($otheremails =~ /,/) {
+             @others = split(/,/,$otheremails);
+         } else {
+             push(@others,$otheremails);
+         }
+         foreach my $addr (@others) {
+             if (!grep(/^\Q$addr\E$/,@recipients)) {
+                 push(@recipients,$addr);
+             }
+         }
+     }
+     my $recipientlist = join(',',@recipients);
+     return $recipientlist;
+ }
  ############################################################
  ############################################################
- sub propath {
+ =pod
-     my ($udom,$uname)=@_;
-     $udom=~s/\W//g;
+ =over 4
-     $uname=~s/\W//g;
-     my $subdir=$uname.'__';
+ =item * &mime_email()
-     $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
-     my $proname="$Apache::lonnet::perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
+ Sends an email with a possible attachment
-     return $proname;
- }
+ Inputs:
+ =over 4
+ from -              Sender's email address
+ to -                Email address of recipient
+ subject -           Subject of email
+ body -              Body of email
+ cc_string -         Carbon copy email address
+ bcc -               Blind carbon copy email address
+ type -              File type of attachment
+ attachment_path -   Path of file to be attached
+ file_name -         Name of file to be attached
+ attachment_text -   The body of an attachment of type "TEXT"
+ =back
+ =back
+ =cut
+ ############################################################
+ ############################################################
+ sub mime_email {
+     my ($from, $to, $subject, $body, $cc_string, $bcc, $attachment_path,
+         $file_name, $attachment_text) = @_;
+     my $msg = MIME::Lite->new(
+              From    => $from,
+              To      => $to,
+              Subject => $subject,
+              Type    =>'TEXT',
+              Data    => $body,
+              );
+     if ($cc_string ne '') {
+         $msg->add("Cc" => $cc_string);
+     }
+     if ($bcc ne '') {
+         $msg->add("Bcc" => $bcc);
+     }
+     $msg->attr("content-type"         => "text/plain");
+     $msg->attr("content-type.charset" => "UTF-8");
+     # Attach file if given
+     if ($attachment_path) {
+         unless ($file_name) {
+             if ($attachment_path =~ m-/([^/]+)$-) { $file_name = $1; }
+         }
+         my ($type, $encoding) = MIME::Types::by_suffix($attachment_path);
+         $msg->attach(Type     => $type,
+                      Path     => $attachment_path,
+                      Filename => $file_name
+                      );
+     # Otherwise attach text if given
+     } elsif ($attachment_text) {
+         $msg->attach(Type => 'TEXT',
+                      Data => $attachment_text);
+     }
+     # Send it
+     $msg->send('sendmail');
+ }
+ ############################################################
+ ############################################################
+ =pod
+ =head1 Course Catalog Routines
+ =over 4
+ =item * &gather_categories()
+ Converts category definitions - keys of categories hash stored in
+ coursecategories in configuration.db on the primary library server in a
+ domain - to an array.  Also generates javascript and idx hash used to
+ generate Domain Coordinator interface for editing Course Categories.
+ Inputs:
+ categories (reference to hash of category definitions).
+ cats (reference to array of arrays/hashes which encapsulates hierarchy of
+       categories and subcategories).
+ idx (reference to hash of counters used in Domain Coordinator interface for
+       editing Course Categories).
+ jsarray (reference to array of categories used to create Javascript arrays for
+          Domain Coordinator interface for editing Course Categories).
+ Returns: nothing
+ Side effects: populates cats, idx and jsarray.
+ =cut
+ sub gather_categories {
+     my ($categories,$cats,$idx,$jsarray) = @_;
+     my %counters;
+     my $num = 0;
+     foreach my $item (keys(%{$categories})) {
+         my ($cat,$container,$depth) = map { &unescape($_); } split(/:/,$item);
+         if ($container eq '' && $depth == 0) {
+             $cats->[$depth][$categories->{$item}] = $cat;
+         } else {
+             $cats->[$depth]{$container}[$categories->{$item}] = $cat;
+         }
+         my ($escitem,$tail) = split(/:/,$item,2);
+         if ($counters{$tail} eq '') {
+             $counters{$tail} = $num;
+             $num ++;
+         }
+         if (ref($idx) eq 'HASH') {
+             $idx->{$item} = $counters{$tail};
+         }
+         if (ref($jsarray) eq 'ARRAY') {
+             push(@{$jsarray->[$counters{$tail}]},$item);
+         }
+     }
+     return;
+ }
+ =pod
+ =item * &extract_categories()
+ Used to generate breadcrumb trails for course categories.
+ Inputs:
+ categories (reference to hash of category definitions).
+ cats (reference to array of arrays/hashes which encapsulates hierarchy of
+       categories and subcategories).
+ trails (reference to array of breacrumb trails for each category).
+ allitems (reference to hash - key is category key
+          (format: escaped(name):escaped(parent category):depth in hierarchy).
+ idx (reference to hash of counters used in Domain Coordinator interface for
+       editing Course Categories).
+ jsarray (reference to array of categories used to create Javascript arrays for
+          Domain Coordinator interface for editing Course Categories).
+ subcats (reference to hash of arrays containing all subcategories within each
+          category, -recursive)
+ Returns: nothing
+ Side effects: populates trails and allitems hash references.
+ =cut
+ sub extract_categories {
+     my ($categories,$cats,$trails,$allitems,$idx,$jsarray,$subcats) = @_;
+     if (ref($categories) eq 'HASH') {
+         &gather_categories($categories,$cats,$idx,$jsarray);
+         if (ref($cats->[0]) eq 'ARRAY') {
+             for (my $i=0; $i<@{$cats->[0]}; $i++) {
+                 my $name = $cats->[0][$i];
+                 my $item = &escape($name).'::0';
+                 my $trailstr;
+                 if ($name eq 'instcode') {
+                     $trailstr = &mt('Official courses (with institutional codes)');
+                 } elsif ($name eq 'communities') {
+                     $trailstr = &mt('Communities');
+                 } elsif ($name eq 'placement') {
+                     $trailstr = &mt('Placement Tests');
+                 } else {
+                     $trailstr = $name;
+                 }
+                 if ($allitems->{$item} eq '') {
+                     push(@{$trails},$trailstr);
+                     $allitems->{$item} = scalar(@{$trails})-1;
+                 }
+                 my @parents = ($name);
+                 if (ref($cats->[1]{$name}) eq 'ARRAY') {
+                     for (my $j=0; $j<@{$cats->[1]{$name}}; $j++) {
+                         my $category = $cats->[1]{$name}[$j];
+                         if (ref($subcats) eq 'HASH') {
+                             push(@{$subcats->{$item}},&escape($category).':'.&escape($name).':1');
+                         }
+                         &recurse_categories($cats,2,$category,$trails,$allitems,\@parents,$subcats);
+                     }
+                 } else {
+                     if (ref($subcats) eq 'HASH') {
+                         $subcats->{$item} = [];
+                     }
+                 }
+             }
+         }
+     }
+     return;
+ }
+ =pod
+ =item * &recurse_categories()
+ Recursively used to generate breadcrumb trails for course categories.
+ Inputs:
+ cats (reference to array of arrays/hashes which encapsulates hierarchy of
+       categories and subcategories).
+ depth (current depth in hierarchy of categories and sub-categories - 0 indexed).
+ category (current course category, for which breadcrumb trail is being generated).
+ trails (reference to array of breadcrumb trails for each category).
+ allitems (reference to hash - key is category key
+          (format: escaped(name):escaped(parent category):depth in hierarchy).
+ parents (array containing containers directories for current category,
+          back to top level).
+ Returns: nothing
+ Side effects: populates trails and allitems hash references
+ =cut
+ sub recurse_categories {
+     my ($cats,$depth,$category,$trails,$allitems,$parents,$subcats) = @_;
+     my $shallower = $depth - 1;
+     if (ref($cats->[$depth]{$category}) eq 'ARRAY') {
+         for (my $k=0; $k<@{$cats->[$depth]{$category}}; $k++) {
+             my $name = $cats->[$depth]{$category}[$k];
+             my $item = &escape($category).':'.&escape($parents->[-1]).':'.$shallower;
+             my $trailstr = join(' -&gt; ',(@{$parents},$category));
+             if ($allitems->{$item} eq '') {
+                 push(@{$trails},$trailstr);
+                 $allitems->{$item} = scalar(@{$trails})-1;
+             }
+             my $deeper = $depth+1;
+             push(@{$parents},$category);
+             if (ref($subcats) eq 'HASH') {
+                 my $subcat = &escape($name).':'.$category.':'.$depth;
+                 for (my $j=@{$parents}; $j>=0; $j--) {
+                     my $higher;
+                     if ($j > 0) {
+                         $higher = &escape($parents->[$j]).':'.
+                                   &escape($parents->[$j-1]).':'.$j;
+                     } else {
+                         $higher = &escape($parents->[$j]).'::'.$j;
+                     }
+                     push(@{$subcats->{$higher}},$subcat);
+                 }
+             }
+             &recurse_categories($cats,$deeper,$name,$trails,$allitems,$parents,
+                                 $subcats);
+             pop(@{$parents});
+         }
+     } else {
+         my $item = &escape($category).':'.&escape($parents->[-1]).':'.$shallower;
+         my $trailstr = join(' -&gt; ',(@{$parents},$category));
+         if ($allitems->{$item} eq '') {
+             push(@{$trails},$trailstr);
+             $allitems->{$item} = scalar(@{$trails})-1;
+         }
+     }
+     return;
+ }
+ =pod
+ =item * &assign_categories_table()
+ Create a datatable for display of hierarchical categories in a domain,
+ with checkboxes to allow a course to be categorized.
+ Inputs:
+ cathash - reference to hash of categories defined for the domain (from
+           configuration.db)
+ currcat - scalar with an & separated list of categories assigned to a course.
+ type    - scalar contains course type (Course or Community).
+ disabled - scalar (optional) contains disabled="disabled" if input elements are
+            to be readonly (e.g., Domain Helpdesk role viewing course settings).
+ Returns: $output (markup to be displayed)
+ =cut
+ sub assign_categories_table {
+     my ($cathash,$currcat,$type,$disabled) = @_;
+     my $output;
+     if (ref($cathash) eq 'HASH') {
+         my (@cats,@trails,%allitems,%idx,@jsarray,@path,$maxdepth);
+         &extract_categories($cathash,\@cats,\@trails,\%allitems,\%idx,\@jsarray);
+         $maxdepth = scalar(@cats);
+         if (@cats > 0) {
+             my $itemcount = 0;
+             if (ref($cats[0]) eq 'ARRAY') {
+                 my @currcategories;
+                 if ($currcat ne '') {
+                     @currcategories = split('&',$currcat);
+                 }
+                 my $table;
+                 for (my $i=0; $i<@{$cats[0]}; $i++) {
+                     my $parent = $cats[0][$i];
+                     next if ($parent eq 'instcode');
+                     if ($type eq 'Community') {
+                         next unless ($parent eq 'communities');
+                     } elsif ($type eq 'Placement') {
+                         next unless ($parent eq 'placement');
+                     } else {
+                         next if (($parent eq 'communities') || ($parent eq 'placement'));
+                     }
+                     my $css_class = $itemcount%2?' class="LC_odd_row"':'';
+                     my $item = &escape($parent).'::0';
+                     my $checked = '';
+                     if (@currcategories > 0) {
+                         if (grep(/^\Q$item\E$/,@currcategories)) {
+                             $checked = ' checked="checked"';
+                         }
+                     }
+                     my $parent_title = $parent;
+                     if ($parent eq 'communities') {
+                         $parent_title = &mt('Communities');
+                     } elsif ($parent eq 'placement') {
+                         $parent_title = &mt('Placement Tests');
+                     }
+                     $table .= '<tr '.$css_class.'><td><span class="LC_nobreak">'.
+                               '<input type="checkbox" name="usecategory" value="'.
+                               $item.'"'.$checked.$disabled.' />'.$parent_title.'</span>'.
+                               '<input type="hidden" name="catname" value="'.$parent.'" /></td>';
+                     my $depth = 1;
+                     push(@path,$parent);
+                     $table .= &assign_category_rows($itemcount,\@cats,$depth,$parent,\@path,\@currcategories,$disabled);
+                     pop(@path);
+                     $table .= '</tr><tr><td colspan="'.$maxdepth.'" class="LC_row_separator"></td></tr>';
+                     $itemcount ++;
+                 }
+                 if ($itemcount) {
+                     $output = &Apache::loncommon::start_data_table().
+                               $table.
+                               &Apache::loncommon::end_data_table();
+                 }
+             }
+         }
+     }
+     return $output;
+ }
+ =pod
+ =item * &assign_category_rows()
+ Create a datatable row for display of nested categories in a domain,
+ with checkboxes to allow a course to be categorized,called recursively.
+ Inputs:
+ itemcount - track row number for alternating colors
+ cats - reference to array of arrays/hashes which encapsulates hierarchy of
+       categories and subcategories.
+ depth - current depth in hierarchy of categories and sub-categories - 0 indexed.
+ parent - parent of current category item
+ path - Array containing all categories back up through the hierarchy from the
+        current category to the top level.
+ currcategories - reference to array of current categories assigned to the course
+ disabled - scalar (optional) contains disabled="disabled" if input elements are
+            to be readonly (e.g., Domain Helpdesk role viewing course settings).
+ Returns: $output (markup to be displayed).
+ =cut
+ sub assign_category_rows {
+     my ($itemcount,$cats,$depth,$parent,$path,$currcategories,$disabled) = @_;
+     my ($text,$name,$item,$chgstr);
+     if (ref($cats) eq 'ARRAY') {
+         my $maxdepth = scalar(@{$cats});
+         if (ref($cats->[$depth]) eq 'HASH') {
+             if (ref($cats->[$depth]{$parent}) eq 'ARRAY') {
+                 my $numchildren = @{$cats->[$depth]{$parent}};
+                 my $css_class = $itemcount%2?' class="LC_odd_row"':'';
+                 $text .= '<td><table class="LC_data_table">';
+                 for (my $j=0; $j<$numchildren; $j++) {
+                     $name = $cats->[$depth]{$parent}[$j];
+                     $item = &escape($name).':'.&escape($parent).':'.$depth;
+                     my $deeper = $depth+1;
+                     my $checked = '';
+                     if (ref($currcategories) eq 'ARRAY') {
+                         if (@{$currcategories} > 0) {
+                             if (grep(/^\Q$item\E$/,@{$currcategories})) {
+                                 $checked = ' checked="checked"';
+                             }
+                         }
+                     }
+                     $text .= '<tr><td><span class="LC_nobreak"><label>'.
+                              '<input type="checkbox" name="usecategory" value="'.
+                              $item.'"'.$checked.$disabled.' />'.$name.'</label></span>'.
+                              '<input type="hidden" name="catname" value="'.$name.'" />'.
+                              '</td><td>';
+                     if (ref($path) eq 'ARRAY') {
+                         push(@{$path},$name);
+                         $text .= &assign_category_rows($itemcount,$cats,$deeper,$name,$path,$currcategories,$disabled);
+                         pop(@{$path});
+                     }
+                     $text .= '</td></tr>';
+                 }
+                 $text .= '</table></td>';
+             }
+         }
+     }
+     return $text;
+ }
+ =pod
+ =back
+ =cut
+ ############################################################
+ ############################################################
+ sub commit_customrole {
+     my ($udom,$uname,$url,$three,$four,$five,$start,$end,$context) = @_;
+     my $output = &mt('Assigning custom role').' "'.$five.'" by '.$four.':'.$three.' in '.$url.
+                          ($start?', '.&mt('starting').' '.localtime($start):'').
+                          ($end?', ending '.localtime($end):'').': <b>'.
+               &Apache::lonnet::assigncustomrole(
+                  $udom,$uname,$url,$three,$four,$five,$end,$start,undef,undef,$context).
+                  '</b><br />';
+     return $output;
+ }
+ sub commit_standardrole {
+     my ($udom,$uname,$url,$three,$start,$end,$one,$two,$sec,$context,$credits) = @_;
+     my ($output,$logmsg,$linefeed);
+     if ($context eq 'auto') {
+         $linefeed = "\n";
+     } else {
+         $linefeed = "<br />\n";
+     }
+     if ($three eq 'st') {
+         my $result = &commit_studentrole(\$logmsg,$udom,$uname,$url,$three,$start,$end,
+                                          $one,$two,$sec,$context,$credits);
+         if (($result =~ /^error/) || ($result eq 'not_in_class') ||
+             ($result eq 'unknown_course') || ($result eq 'refused')) {
+             $output = $logmsg.' '.&mt('Error: ').$result."\n";
+         } else {
+             $output = $logmsg.$linefeed.&mt('Assigning').' '.$three.' in '.$url.
+                ($start?', '.&mt('starting').' '.localtime($start):'').
+                ($end?', '.&mt('ending').' '.localtime($end):'').': ';
+             if ($context eq 'auto') {
+                 $output .= $result.$linefeed.&mt('Add to classlist').': ok';
+             } else {
+                $output .= '<b>'.$result.'</b>'.$linefeed.
+                &mt('Add to classlist').': <b>ok</b>';
+             }
+             $output .= $linefeed;
+         }
+     } else {
+         $output = &mt('Assigning').' '.$three.' in '.$url.
+                ($start?', '.&mt('starting').' '.localtime($start):'').
+                ($end?', '.&mt('ending').' '.localtime($end):'').': ';
+         my $result = &Apache::lonnet::assignrole($udom,$uname,$url,$three,$end,$start,'','',$context);
+         if ($context eq 'auto') {
+             $output .= $result.$linefeed;
+         } else {
+             $output .= '<b>'.$result.'</b>'.$linefeed;
+         }
+     }
+     return $output;
+ }
+ sub commit_studentrole {
+     my ($logmsg,$udom,$uname,$url,$three,$start,$end,$one,$two,$sec,$context,
+         $credits) = @_;
+     my ($result,$linefeed,$oldsecurl,$newsecurl);
+     if ($context eq 'auto') {
+         $linefeed = "\n";
+     } else {
+         $linefeed = '<br />'."\n";
+     }
+     if (defined($one) && defined($two)) {
+         my $cid=$one.'_'.$two;
+         my $oldsec=&Apache::lonnet::getsection($udom,$uname,$cid);
+         my $secchange = 0;
+         my $expire_role_result;
+         my $modify_section_result;
+         if ($oldsec ne '-1') {
+             if ($oldsec ne $sec) {
+                 $secchange = 1;
+                 my $now = time;
+                 my $uurl='/'.$cid;
+                 $uurl=~s/\_/\//g;
+                 if ($oldsec) {
+                     $uurl.='/'.$oldsec;
+                 }
+                 $oldsecurl = $uurl;
+                 $expire_role_result =
+                     &Apache::lonnet::assignrole($udom,$uname,$uurl,'st',$now,'','',$context);
+                 if ($env{'request.course.sec'} ne '') {
+                     if ($expire_role_result eq 'refused') {
+                         my @roles = ('st');
+                         my @statuses = ('previous');
+                         my @roledoms = ($one);
+                         my $withsec = 1;
+                         my %roleshash =
+                             &Apache::lonnet::get_my_roles($uname,$udom,'userroles',
+                                               \@statuses,\@roles,\@roledoms,$withsec);
+                         if (defined ($roleshash{$two.':'.$one.':st:'.$oldsec})) {
+                             my ($oldstart,$oldend) =
+                                 split(':',$roleshash{$two.':'.$one.':st:'.$oldsec});
+                             if ($oldend > 0 && $oldend <= $now) {
+                                 $expire_role_result = 'ok';
+                             }
+                         }
+                     }
+                 }
+                 $result = $expire_role_result;
+             }
+         }
+         if (($expire_role_result eq 'ok') || ($secchange == 0)) {
+             $modify_section_result =
+                 &Apache::lonnet::modify_student_enrollment($udom,$uname,undef,undef,
+                                                            undef,undef,undef,$sec,
+                                                            $end,$start,'','',$cid,
+                                                            '',$context,$credits);
+             if ($modify_section_result =~ /^ok/) {
+                 if ($secchange == 1) {
+                     if ($sec eq '') {
+                         $$logmsg .= &mt('Section for [_1] switched from (possibly expired) old section: [_2] to student role without a section.',$uname,$oldsec).$linefeed;
+                     } else {
+                         $$logmsg .= &mt('Section for [_1] switched from (possibly expired) old section: [_2] to new section: [_3].',$uname,$oldsec,$sec).$linefeed;
+                     }
+                 } elsif ($oldsec eq '-1') {
+                     if ($sec eq '') {
+                         $$logmsg .= &mt('New student role without a section for [_1] in course [_2].',$uname,$cid).$linefeed;
+                     } else {
+                         $$logmsg .= &mt('New student role for [_1] in section [_2] in course [_3].',$uname,$sec,$cid).$linefeed;
+                     }
+                 } else {
+                     if ($sec eq '') {
+                         $$logmsg .= &mt('Student [_1] assigned to course [_2] without a section.',$uname,$cid).$linefeed;
+                     } else {
+                         $$logmsg .= &mt('Student [_1] assigned to section [_2] in course [_3].',$uname,$sec,$cid).$linefeed;
+                     }
+                 }
+             } else {
+                 if ($secchange) {
+                     $$logmsg .= &mt('Error when attempting section change for [_1] from old section "[_2]" to new section: "[_3]" in course [_4] -error:',$uname,$oldsec,$sec,$cid).' '.$modify_section_result.$linefeed;
+                 } else {
+                     $$logmsg .= &mt('Error when attempting to modify role for [_1] for section: "[_2]" in course [_3] -error:',$uname,$sec,$cid).' '.$modify_section_result.$linefeed;
+                 }
+             }
+             $result = $modify_section_result;
+         } elsif ($secchange == 1) {
+             if ($oldsec eq '') {
+                 $$logmsg .= &mt('Error when attempting to expire existing role without a section for [_1] in course [_2] -error: ',$uname,$cid).' '.$expire_role_result.$linefeed;
+             } else {
+                 $$logmsg .= &mt('Error when attempting to expire existing role for [_1] in section [_2] in course [_3] -error: ',$uname,$oldsec,$cid).' '.$expire_role_result.$linefeed;
+             }
+             if ($expire_role_result eq 'refused') {
+                 my $newsecurl = '/'.$cid;
+                 $newsecurl =~ s/\_/\//g;
+                 if ($sec ne '') {
+                     $newsecurl.='/'.$sec;
+                 }
+                 if (&Apache::lonnet::allowed('cst',$newsecurl) && !(&Apache::lonnet::allowed('cst',$oldsecurl))) {
+                     if ($sec eq '') {
+                         $$logmsg .= &mt('Although your current role has privileges to add students to section "[_1]", you do not have privileges to modify existing enrollments unaffiliated with any section.',$sec).$linefeed;
+                     } else {
+                         $$logmsg .= &mt('Although your current role has privileges to add students to section "[_1]", you do not have privileges to modify existing enrollments in other sections.',$sec).$linefeed;
+                     }
+                 }
+             }
+         }
+     } else {
+         $$logmsg .= &mt('Incomplete course id defined.').$linefeed.&mt('Addition of user [_1] from domain [_2] to course [_3], section [_4] not completed.',$uname,$udom,$one.'_'.$two,$sec).$linefeed;
+         $result = "error: incomplete course id\n";
+     }
+     return $result;
+ }
+ sub show_role_extent {
+     my ($scope,$context,$role) = @_;
+     $scope =~ s{^/}{};
+     my @courseroles = &Apache::lonuserutils::roles_by_context('course',1);
+     push(@courseroles,'co');
+     my @authorroles = &Apache::lonuserutils::roles_by_context('author');
+     if (($context eq 'course') || (grep(/^\Q$role\E/,@courseroles))) {
+         $scope =~ s{/}{_};
+         return '<span class="LC_cusr_emph">'.$env{'course.'.$scope.'.description'}.'</span>';
+     } elsif (($context eq 'author') || (grep(/^\Q$role\E/,@authorroles))) {
+         my ($audom,$auname) = split(/\//,$scope);
+         return &mt('[_1] Author Space','<span class="LC_cusr_emph">'.
+                    &Apache::loncommon::plainname($auname,$audom).'</span>');
+     } else {
+         $scope =~ s{/$}{};
+         return &mt('Domain: [_1]','<span class="LC_cusr_emph">'.
+                    &Apache::lonnet::domain($scope,'description').'</span>');
+     }
+ }
+ ############################################################
+ ############################################################
+ sub check_clone {
+     my ($args,$linefeed) = @_;
+     my $cloneid='/'.$args->{'clonedomain'}.'/'.$args->{'clonecourse'};
+     my ($clonecrsudom,$clonecrsunum)= &LONCAPA::split_courseid($cloneid);
+     my $clonehome=&Apache::lonnet::homeserver($clonecrsunum,$clonecrsudom);
+     my $clonemsg;
+     my $can_clone = 0;
+     my $lctype = lc($args->{'crstype'});
+     if ($lctype ne 'community') {
+         $lctype = 'course';
+     }
+     if ($clonehome eq 'no_host') {
+         if ($args->{'crstype'} eq 'Community') {
+             $clonemsg = &mt('No new community created.').$linefeed.&mt('A new community could not be cloned from the specified original - [_1] - because it is a non-existent community.',$args->{'clonecourse'}.':'.$args->{'clonedomain'});
+         } else {
+             $clonemsg = &mt('No new course created.').$linefeed.&mt('A new course could not be cloned from the specified original - [_1] - because it is a non-existent course.',$args->{'clonecourse'}.':'.$args->{'clonedomain'});
+         }
+     } else {
+ 	my %clonedesc = &Apache::lonnet::coursedescription($cloneid,{'one_time' => 1});
+         if ($args->{'crstype'} eq 'Community') {
+             if ($clonedesc{'type'} ne 'Community') {
+                  $clonemsg = &mt('No new community created.').$linefeed.&mt('A new community could not be cloned from the specified original - [_1] - because it is a course not a community.',$args->{'clonecourse'}.':'.$args->{'clonedomain'});
+                 return ($can_clone, $clonemsg, $cloneid, $clonehome);
+             }
+         }
+ 	if (($env{'request.role.domain'} eq $args->{'clonedomain'}) &&
+             (&Apache::lonnet::allowed('ccc',$env{'request.role.domain'}))) {
+ 	    $can_clone = 1;
+ 	} else {
+ 	    my %clonehash = &Apache::lonnet::get('environment',['cloners','internal.coursecode'],
+ 						 $args->{'clonedomain'},$args->{'clonecourse'});
+             if ($clonehash{'cloners'} eq '') {
+                 my %domdefs = &Apache::lonnet::get_domain_defaults($args->{'course_domain'});
+                 if ($domdefs{'canclone'}) {
+                     unless ($domdefs{'canclone'} eq 'none') {
+                         if ($domdefs{'canclone'} eq 'domain') {
+                             if ($args->{'ccdomain'} eq $args->{'clonedomain'}) {
+                                 $can_clone = 1;
+                             }
+                         } elsif (($clonehash{'internal.coursecode'}) && ($args->{'crscode'}) &&
+                                  ($args->{'clonedomain'} eq  $args->{'course_domain'})) {
+                             if (&Apache::lonnet::default_instcode_cloning($args->{'clonedomain'},$domdefs{'canclone'},
+                                                                           $clonehash{'internal.coursecode'},$args->{'crscode'})) {
+                                 $can_clone = 1;
+                             }
+                         }
+                     }
+                 }
+             } else {
+ 	        my @cloners = split(/,/,$clonehash{'cloners'});
+                 if (grep(/^\*$/,@cloners)) {
+                     $can_clone = 1;
+                 } elsif (grep(/^\*\:\Q$args->{'ccdomain'}\E$/,@cloners)) {
+                     $can_clone = 1;
+                 } elsif (grep(/^\Q$args->{'ccuname'}\E:\Q$args->{'ccdomain'}\E$/,@cloners)) {
+                     $can_clone = 1;
+                 }
+                 unless ($can_clone) {
+                     if (($clonehash{'internal.coursecode'}) && ($args->{'crscode'}) &&
+                         ($args->{'clonedomain'} eq  $args->{'course_domain'})) {
+                         my (%gotdomdefaults,%gotcodedefaults);
+                         foreach my $cloner (@cloners) {
+                             if (($cloner ne '*') && ($cloner !~ /^\*\:$match_domain$/) &&
+                                 ($cloner !~ /^$match_username\:$match_domain$/) && ($cloner ne '')) {
+                                 my (%codedefaults,@code_order);
+                                 if (ref($gotcodedefaults{$args->{'clonedomain'}}) eq 'HASH') {
+                                     if (ref($gotcodedefaults{$args->{'clonedomain'}}{'defaults'}) eq 'HASH') {
+                                         %codedefaults = %{$gotcodedefaults{$args->{'clonedomain'}}{'defaults'}};
+                                     }
+                                     if (ref($gotcodedefaults{$args->{'clonedomain'}}{'order'}) eq 'ARRAY') {
+                                         @code_order = @{$gotcodedefaults{$args->{'clonedomain'}}{'order'}};
+                                     }
+                                 } else {
+                                     &Apache::lonnet::auto_instcode_defaults($args->{'clonedomain'},
+                                                                             \%codedefaults,
+                                                                             \@code_order);
+                                     $gotcodedefaults{$args->{'clonedomain'}}{'defaults'} = \%codedefaults;
+                                     $gotcodedefaults{$args->{'clonedomain'}}{'order'} = \@code_order;
+                                 }
+                                 if (@code_order > 0) {
+                                     if (&Apache::lonnet::check_instcode_cloning(\%codedefaults,\@code_order,
+                                                                                 $cloner,$clonehash{'internal.coursecode'},
+                                                                                 $args->{'crscode'})) {
+                                         $can_clone = 1;
+                                         last;
+                                     }
+                                 }
+                             }
+                         }
+                     }
+                 }
+             }
+             unless ($can_clone) {
+                 my $ccrole = 'cc';
+                 if ($args->{'crstype'} eq 'Community') {
+                     $ccrole = 'co';
+                 }
+ 	        my %roleshash =
+ 		    &Apache::lonnet::get_my_roles($args->{'ccuname'},
+ 					          $args->{'ccdomain'},
+                                                   'userroles',['active'],[$ccrole],
+ 					          [$args->{'clonedomain'}]);
+ 	        if ($roleshash{$args->{'clonecourse'}.':'.$args->{'clonedomain'}.':'.$ccrole}) {
+                     $can_clone = 1;
+                 } elsif (&Apache::lonnet::is_course_owner($args->{'clonedomain'},$args->{'clonecourse'},
+                                                           $args->{'ccuname'},$args->{'ccdomain'})) {
+                     $can_clone = 1;
+                 }
+             }
+             unless ($can_clone) {
+                 if ($args->{'crstype'} eq 'Community') {
+                     $clonemsg = &mt('No new community created.').$linefeed.&mt('The new community could not be cloned from the existing community because the new community owner ([_1]) does not have cloning rights in the existing community ([_2]).',$args->{'ccuname'}.':'.$args->{'ccdomain'},$clonedesc{'description'});
+                 } else {
+                     $clonemsg = &mt('No new course created.').$linefeed.&mt('The new course could not be cloned from the existing course because the new course owner ([_1]) does not have cloning rights in the existing course ([_2]).',$args->{'ccuname'}.':'.$args->{'ccdomain'},$clonedesc{'description'});
+                 }
+ 	    }
+         }
+     }
+     return ($can_clone, $clonemsg, $cloneid, $clonehome);
+ }
+ sub construct_course {
+     my ($args,$logmsg,$courseid,$crsudom,$crsunum,$udom,$uname,$context,$cnum,$category,$coderef) = @_;
+     my $outcome;
+     my $linefeed =  '<br />'."\n";
+     if ($context eq 'auto') {
+         $linefeed = "\n";
+     }
+ #
+ # Are we cloning?
+ #
+     my ($can_clone, $clonemsg, $cloneid, $clonehome);
+     if (($args->{'clonecourse'}) && ($args->{'clonedomain'})) {
+ 	($can_clone, $clonemsg, $cloneid, $clonehome) = &check_clone($args,$linefeed);
+ 	if ($context ne 'auto') {
+             if ($clonemsg ne '') {
+ 	        $clonemsg = '<span class="LC_error">'.$clonemsg.'</span>';
+             }
+ 	}
+ 	$outcome .= $clonemsg.$linefeed;
+         if (!$can_clone) {
+ 	    return (0,$outcome);
+ 	}
+     }
+ #
+ # Open course
+ #
+     my $showncrstype;
+     if ($args->{'crstype'} eq 'Placement') {
+         $showncrstype = 'placement test';
+     } else {
+         $showncrstype = lc($args->{'crstype'});
+     }
+     my %cenv=();
+     $$courseid=&Apache::lonnet::createcourse($args->{'course_domain'},
+                                              $args->{'cdescr'},
+                                              $args->{'curl'},
+                                              $args->{'course_home'},
+                                              $args->{'nonstandard'},
+                                              $args->{'crscode'},
+                                              $args->{'ccuname'}.':'.
+                                              $args->{'ccdomain'},
+                                              $args->{'crstype'},
+                                              $cnum,$context,$category);
+     # Note: The testing routines depend on this being output; see
+     # Utils::Course. This needs to at least be output as a comment
+     # if anyone ever decides to not show this, and Utils::Course::new
+     # will need to be suitably modified.
+     $outcome .= &mt('New LON-CAPA [_1] ID: [_2]',$showncrstype,$$courseid).$linefeed;
+     if ($$courseid =~ /^error:/) {
+         return (0,$outcome);
+     }
+ #
+ # Check if created correctly
+ #
+     ($$crsudom,$$crsunum)= &LONCAPA::split_courseid($$courseid);
+     my $crsuhome=&Apache::lonnet::homeserver($$crsunum,$$crsudom);
+     if ($crsuhome eq 'no_host') {
+         $outcome .= &mt('Course creation failed, unrecognized course home server.').$linefeed;
+         return (0,$outcome);
+     }
+     $outcome .= &mt('Created on').': '.$crsuhome.$linefeed;
+ #
+ # Do the cloning
+ #
+     if ($can_clone && $cloneid) {
+ 	$clonemsg = &mt('Cloning [_1] from [_2]',$showncrstype,$clonehome);
+ 	if ($context ne 'auto') {
+ 	    $clonemsg = '<span class="LC_success">'.$clonemsg.'</span>';
+ 	}
+ 	$outcome .= $clonemsg.$linefeed;
+ 	my %oldcenv=&Apache::lonnet::dump('environment',$$crsudom,$$crsunum);
+ # Copy all files
+ 	&Apache::lonclonecourse::copycoursefiles($cloneid,$$courseid,$args->{'datemode'},$args->{'dateshift'});
+ # Restore URL
+ 	$cenv{'url'}=$oldcenv{'url'};
+ # Restore title
+ 	$cenv{'description'}=$oldcenv{'description'};
+ # Restore creation date, creator and creation context.
+         $cenv{'internal.created'}=$oldcenv{'internal.created'};
+         $cenv{'internal.creator'}=$oldcenv{'internal.creator'};
+         $cenv{'internal.creationcontext'}=$oldcenv{'internal.creationcontext'};
+ # Mark as cloned
+ 	$cenv{'clonedfrom'}=$cloneid;
+ # Need to clone grading mode
+         my %newenv=&Apache::lonnet::get('environment',['grading'],$$crsudom,$$crsunum);
+         $cenv{'grading'}=$newenv{'grading'};
+ # Do not clone these environment entries
+         &Apache::lonnet::del('environment',
+                   ['default_enrollment_start_date',
+                    'default_enrollment_end_date',
+                    'question.email',
+                    'policy.email',
+                    'comment.email',
+                    'pch.users.denied',
+                    'plc.users.denied',
+                    'hidefromcat',
+                    'checkforpriv',
+                    'categories',
+                    'internal.uniquecode'],
+                    $$crsudom,$$crsunum);
+         if ($args->{'textbook'}) {
+             $cenv{'internal.textbook'} = $args->{'textbook'};
+         }
+     }
+ #
+ # Set environment (will override cloned, if existing)
+ #
+     my @sections = ();
+     my @xlists = ();
+     if ($args->{'crstype'}) {
+         $cenv{'type'}=$args->{'crstype'};
+     }
+     if ($args->{'crsid'}) {
+         $cenv{'courseid'}=$args->{'crsid'};
+     }
+     if ($args->{'crscode'}) {
+         $cenv{'internal.coursecode'}=$args->{'crscode'};
+     }
+     if ($args->{'crsquota'} ne '') {
+         $cenv{'internal.coursequota'}=$args->{'crsquota'};
+     } else {
+         $cenv{'internal.coursequota'}=$args->{'crsquota'} = 20;
+     }
+     if ($args->{'ccuname'}) {
+         $cenv{'internal.courseowner'} = $args->{'ccuname'}.
+                                         ':'.$args->{'ccdomain'};
+     } else {
+         $cenv{'internal.courseowner'} = $args->{'curruser'};
+     }
+     if ($args->{'defaultcredits'}) {
+         $cenv{'internal.defaultcredits'} = $args->{'defaultcredits'};
+     }
+     my @badclasses = (); # Used to accumulate sections/crosslistings that did not pass classlist access check for course owner.
+     if ($args->{'crssections'}) {
+         $cenv{'internal.sectionnums'} = '';
+         if ($args->{'crssections'} =~ m/,/) {
+             @sections = split/,/,$args->{'crssections'};
+         } else {
+             $sections[0] = $args->{'crssections'};
+         }
+         if (@sections > 0) {
+             foreach my $item (@sections) {
+                 my ($sec,$gp) = split/:/,$item;
+                 my $class = $args->{'crscode'}.$sec;
+                 my $addcheck = &Apache::lonnet::auto_new_course($$crsunum,$$crsudom,$class,$cenv{'internal.courseowner'});
+                 $cenv{'internal.sectionnums'} .= $item.',';
+                 unless ($addcheck eq 'ok') {
+                     push @badclasses, $class;
+                 }
+             }
+             $cenv{'internal.sectionnums'} =~ s/,$//;
+         }
+     }
+ # do not hide course coordinator from staff listing,
+ # even if privileged
+     $cenv{'nothideprivileged'}=$args->{'ccuname'}.':'.$args->{'ccdomain'};
+ # add course coordinator's domain to domains to check for privileged users
+ # if different to course domain
+     if ($$crsudom ne $args->{'ccdomain'}) {
+         $cenv{'checkforpriv'} = $args->{'ccdomain'};
+     }
+ # add crosslistings
+     if ($args->{'crsxlist'}) {
+         $cenv{'internal.crosslistings'}='';
+         if ($args->{'crsxlist'} =~ m/,/) {
+             @xlists = split/,/,$args->{'crsxlist'};
+         } else {
+             $xlists[0] = $args->{'crsxlist'};
+         }
+         if (@xlists > 0) {
+             foreach my $item (@xlists) {
+                 my ($xl,$gp) = split/:/,$item;
+                 my $addcheck =  &Apache::lonnet::auto_new_course($$crsunum,$$crsudom,$xl,$cenv{'internal.courseowner'});
+                 $cenv{'internal.crosslistings'} .= $item.',';
+                 unless ($addcheck eq 'ok') {
+                     push @badclasses, $xl;
+                 }
+             }
+             $cenv{'internal.crosslistings'} =~ s/,$//;
+         }
+     }
+     if ($args->{'autoadds'}) {
+         $cenv{'internal.autoadds'}=$args->{'autoadds'};
+     }
+     if ($args->{'autodrops'}) {
+         $cenv{'internal.autodrops'}=$args->{'autodrops'};
+     }
+ # check for notification of enrollment changes
+     my @notified = ();
+     if ($args->{'notify_owner'}) {
+         if ($args->{'ccuname'} ne '') {
+             push(@notified,$args->{'ccuname'}.':'.$args->{'ccdomain'});
+         }
+     }
+     if ($args->{'notify_dc'}) {
+         if ($uname ne '') {
+             push(@notified,$uname.':'.$udom);
+         }
+     }
+     if (@notified > 0) {
+         my $notifylist;
+         if (@notified > 1) {
+             $notifylist = join(',',@notified);
+         } else {
+             $notifylist = $notified[0];
+         }
+         $cenv{'internal.notifylist'} = $notifylist;
+     }
+     if (@badclasses > 0) {
+         my %lt=&Apache::lonlocal::texthash(
+                 'tclb' => 'The courses listed below were included as sections or crosslistings affiliated with your new LON-CAPA course.  However, if automated course roster updates are enabled for this class, these particular sections/crosslistings will not contribute towards enrollment, because the user identified as the course owner for this LON-CAPA course',
+                 'dnhr' => 'does not have rights to access enrollment in these classes',
+                 'adby' => 'as determined by the policies of your institution on access to official classlists'
+         );
+         my $badclass_msg = $cenv{'internal.courseowner'}.') - '.$lt{'dnhr'}.
+                            ' ('.$lt{'adby'}.')';
+         if ($context eq 'auto') {
+             $outcome .= $badclass_msg.$linefeed;
+             $outcome .= '<div class="LC_warning">'.$badclass_msg.$linefeed.'<ul>'."\n";
+             foreach my $item (@badclasses) {
+                 if ($context eq 'auto') {
+                     $outcome .= " - $item\n";
+                 } else {
+                     $outcome .= "<li>$item</li>\n";
+                 }
+             }
+             if ($context eq 'auto') {
+                 $outcome .= $linefeed;
+             } else {
+                 $outcome .= "</ul><br /><br /></div>\n";
+             }
+         }
+     }
+     if ($args->{'no_end_date'}) {
+         $args->{'endaccess'} = 0;
+     }
+     $cenv{'internal.autostart'}=$args->{'enrollstart'};
+     $cenv{'internal.autoend'}=$args->{'enrollend'};
+     $cenv{'default_enrollment_start_date'}=$args->{'startaccess'};
+     $cenv{'default_enrollment_end_date'}=$args->{'endaccess'};
+     if ($args->{'showphotos'}) {
+       $cenv{'internal.showphotos'}=$args->{'showphotos'};
+     }
+     $cenv{'internal.authtype'} = $args->{'authtype'};
+     $cenv{'internal.autharg'} = $args->{'autharg'};
+     if ( ($cenv{'internal.authtype'} =~ /^krb/) && ($cenv{'internal.autoadds'} == 1)) {
+         if (! defined($cenv{'internal.autharg'}) || $cenv{'internal.autharg'}  eq '') {
+             my $krb_msg = &mt('As you did not include the default Kerberos domain to be used for authentication in this class, the institutional data used by the automated enrollment process must include the Kerberos domain for each new student');
+             if ($context eq 'auto') {
+                 $outcome .= $krb_msg;
+             } else {
+                 $outcome .= '<span class="LC_error">'.$krb_msg.'</span>';
+             }
+             $outcome .= $linefeed;
+         }
+     }
+     if (($args->{'ccdomain'}) && ($args->{'ccuname'})) {
+        if ($args->{'setpolicy'}) {
+            $cenv{'policy.email'}=$args->{'ccuname'}.':'.$args->{'ccdomain'};
+        }
+        if ($args->{'setcontent'}) {
+            $cenv{'question.email'}=$args->{'ccuname'}.':'.$args->{'ccdomain'};
+        }
+        if ($args->{'setcomment'}) {
+            $cenv{'comment.email'}=$args->{'ccuname'}.':'.$args->{'ccdomain'};
+        }
+     }
+     if ($args->{'reshome'}) {
+ 	$cenv{'reshome'}=$args->{'reshome'}.'/';
+ 	$cenv{'reshome'}=~s/\/+$/\//;
+     }
+ #
+ # course has keyed access
+ #
+     if ($args->{'setkeys'}) {
+        $cenv{'keyaccess'}='yes';
+     }
+ # if specified, key authority is not course, but user
+ # only active if keyaccess is yes
+     if ($args->{'keyauth'}) {
+ 	my ($user,$domain) = split(':',$args->{'keyauth'});
+ 	$user = &LONCAPA::clean_username($user);
+ 	$domain = &LONCAPA::clean_username($domain);
+ 	if ($user ne '' && $domain ne '') {
+ 	    $cenv{'keyauth'}=$user.':'.$domain;
+ 	}
+     }
+ #
+ #  generate and store uniquecode (available to course requester), if course should have one.
+ #
+     if ($args->{'uniquecode'}) {
+         my ($code,$error) = &make_unique_code($$crsudom,$$crsunum);
+         if ($code) {
+             $cenv{'internal.uniquecode'} = $code;
+             my %crsinfo =
+                 &Apache::lonnet::courseiddump($$crsudom,'.',1,'.','.',$$crsunum,undef,undef,'.');
+             if (ref($crsinfo{$$crsudom.'_'.$$crsunum}) eq 'HASH') {
+                 $crsinfo{$$crsudom.'_'.$$crsunum}{'uniquecode'} = $code;
+                 my $putres = &Apache::lonnet::courseidput($$crsudom,\%crsinfo,$crsuhome,'notime');
+             }
+             if (ref($coderef)) {
+                 $$coderef = $code;
+             }
+         }
+     }
+     if ($args->{'disresdis'}) {
+         $cenv{'pch.roles.denied'}='st';
+     }
+     if ($args->{'disablechat'}) {
+         $cenv{'plc.roles.denied'}='st';
+     }
+     # Record we've not yet viewed the Course Initialization Helper for this
+     # course
+     $cenv{'course.helper.not.run'} = 1;
+     #
+     # Use new Randomseed
+     #
+     $cenv{'rndseed'}=&Apache::lonnet::latest_rnd_algorithm_id();;
+     $cenv{'receiptalg'}=&Apache::lonnet::latest_receipt_algorithm_id();;
+     #
+     # The encryption code and receipt prefix for this course
+     #
+     $cenv{'internal.encseed'}=$Apache::lonnet::perlvar{'lonReceipt'}.$$.time.int(rand(9999));
+     $cenv{'internal.encpref'}=100+int(9*rand(99));
+     #
+     # By default, use standard grading
+     if (!defined($cenv{'grading'})) { $cenv{'grading'} = 'standard'; }
+     $outcome .= $linefeed.&mt('Setting environment').': '.
+           &Apache::lonnet::put('environment',\%cenv,$$crsudom,$$crsunum).$linefeed;
+ #
+ # Open all assignments
+ #
+     if ($args->{'openall'}) {
+        my $storeunder=$$crsudom.'_'.$$crsunum.'.0.opendate';
+        my %storecontent = ($storeunder         => time,
+                            $storeunder.'.type' => 'date_start');
+        $outcome .= &mt('Opening all assignments').': '.&Apache::lonnet::cput
+                  ('resourcedata',\%storecontent,$$crsudom,$$crsunum).$linefeed;
+    }
+ #
+ # Set first page
+ #
+     unless (($args->{'nonstandard'}) || ($args->{'firstres'} eq 'blank')
+ 	    || ($cloneid)) {
+ 	use LONCAPA::map;
+ 	$outcome .= &mt('Setting first resource').': ';
+ 	my $map = '/uploaded/'.$$crsudom.'/'.$$crsunum.'/default.sequence';
+         my ($errtext,$fatal)=&LONCAPA::map::mapread($map);
+         $outcome .= ($fatal?$errtext:'read ok').' - ';
+         my $title; my $url;
+         if ($args->{'firstres'} eq 'syl') {
+ 	    $title=&mt('Syllabus');
+             $url='/public/'.$$crsudom.'/'.$$crsunum.'/syllabus';
+         } else {
+             $title=&mt('Table of Contents');
+             $url='/adm/navmaps';
+         }
+         $LONCAPA::map::resources[1]=$title.':'.$url.':false:start:res';
+ 	(my $outtext,$errtext) = &LONCAPA::map::storemap($map,1);
+ 	if ($errtext) { $fatal=2; }
+         $outcome .= ($fatal?$errtext:'write ok').$linefeed;
+     }
+ #
+ # Set params for Placement Tests
+ #
+     if ($args->{'crstype'} eq 'Placement') {
+        my %storecontent;
+        my $prefix=$$crsudom.'_'.$$crsunum.'.0.';
+        my %defaults = (
+                         buttonshide   => { value => 'yes',
+                                            type => 'string_yesno',},
+                         type          => { value => 'randomizetry',
+                                            type  => 'string_questiontype',},
+                         maxtries      => { value => 1,
+                                            type => 'int_pos',},
+                         problemstatus => { value => 'no',
+                                            type  => 'string_problemstatus',},
+                       );
+        foreach my $key (keys(%defaults)) {
+            $storecontent{$prefix.$key} = $defaults{$key}{'value'};
+            $storecontent{$prefix.$key.'.type'} = $defaults{$key}{'type'};
+        }
+        &Apache::lonnet::cput
+                  ('resourcedata',\%storecontent,$$crsudom,$$crsunum);
+     }
+     return (1,$outcome);
+ }
+ sub make_unique_code {
+     my ($cdom,$cnum) = @_;
+     # get lock on uniquecodes db
+     my $lockhash = {
+                       $cnum."\0".'uniquecodes' => $env{'user.name'}.
+                                                   ':'.$env{'user.domain'},
+                    };
+     my $tries = 0;
+     my $gotlock = &Apache::lonnet::newput_dom('uniquecodes',$lockhash,$cdom);
+     my ($code,$error);
+     while (($gotlock ne 'ok') && ($tries<3)) {
+         $tries ++;
+         sleep 1;
+         $gotlock = &Apache::lonnet::newput_dom('uniquecodes',$lockhash,$cdom);
+     }
+     if ($gotlock eq 'ok') {
+         my %currcodes = &Apache::lonnet::dump_dom('uniquecodes',$cdom);
+         my $gotcode;
+         my $attempts = 0;
+         while ((!$gotcode) && ($attempts < 100)) {
+             $code = &generate_code();
+             if (!exists($currcodes{$code})) {
+                 $gotcode = 1;
+                 unless (&Apache::lonnet::newput_dom('uniquecodes',{ $code => $cnum },$cdom) eq 'ok') {
+                     $error = 'nostore';
+                 }
+             }
+             $attempts ++;
+         }
+         my @del_lock = ($cnum."\0".'uniquecodes');
+         my $dellockoutcome = &Apache::lonnet::del_dom('uniquecodes',\@del_lock,$cdom);
+     } else {
+         $error = 'nolock';
+     }
+     return ($code,$error);
+ }
+ sub generate_code {
+     my $code;
+     my @letts = qw(B C D G H J K M N P Q R S T V W X Z);
+     for (my $i=0; $i<6; $i++) {
+         my $lettnum = int (rand 2);
+         my $item = '';
+         if ($lettnum) {
+             $item = $letts[int( rand(18) )];
+         } else {
+             $item = 1+int( rand(8) );
+         }
+         $code .= $item;
+     }
+     return $code;
+ }
+ ############################################################
+ ############################################################
+ # Community, Course and Placement Test
+ sub course_type {
+     my ($cid) = @_;
+     if (!defined($cid)) {
+         $cid = $env{'request.course.id'};
+     }
+     if (defined($env{'course.'.$cid.'.type'})) {
+         return $env{'course.'.$cid.'.type'};
+     } else {
+         return 'Course';
+     }
+ }
+ sub group_term {
+     my $crstype = &course_type();
+     my %names = (
+                   'Course' => 'group',
+                   'Community' => 'group',
+                   'Placement' => 'group',
+                 );
+     return $names{$crstype};
+ }
+ sub course_types {
+     my @types = ('official','unofficial','community','textbook','placement');
+     my %typename = (
+                          official   => 'Official course',
+                          unofficial => 'Unofficial course',
+                          community  => 'Community',
+                          textbook   => 'Textbook course',
+                          placement  => 'Placement test',
+                    );
+     return (\@types,\%typename);
+ }
  sub icon {
      my ($file)=@_;
-     my $curfext = (split(/\./,$file))[-1];
+     my $curfext = lc((split(/\./,$file))[-1]);
      my $iconname=$Apache::lonnet::perlvar{'lonIconsURL'}.'/unknown.gif';
      my $embstyle = &Apache::loncommon::fileembstyle($curfext);
      if (!(!defined($embstyle) || $embstyle eq 'unk' || $embstyle eq 'hdn')) {
- Line 4253  sub icon {
+ Line 15798  sub icon {
  }
  sub lonhttpdurl {
+ #
+ # Had been used for "small fry" static images on separate port 8080.
+ # Modify here if lightweight http functionality desired again.
+ # Currently eliminated due to increasing firewall issues.
+ #
      my ($url)=@_;
-     my $lonhttpd_port=$Apache::lonnet::perlvar{'lonhttpdPort'};
+     return $url;
-     if (!defined($lonhttpd_port)) { $lonhttpd_port='8080'; }
-     return 'http://'.$ENV{'SERVER_NAME'}.':'.$lonhttpd_port.$url;
  }
  sub connection_aborted {
- Line 4288  sub escape_double {
+ Line 15836  sub escape_double {
  sub escape_url {
      my ($url)   = @_;
      my @urlslices = split(/\//, $url,-1);
-     my $lastitem = &Apache::lonnet::escape(pop(@urlslices));
+     my $lastitem = &escape(pop(@urlslices));
-     return join('/',@urlslices).'/'.$lastitem;
+     return &HTML::Entities::encode(join('/',@urlslices),"'").'/'.$lastitem;
+ }
+ sub compare_arrays {
+     my ($arrayref1,$arrayref2) = @_;
+     my (@difference,%count);
+     @difference = ();
+     %count = ();
+     if ((ref($arrayref1) eq 'ARRAY') && (ref($arrayref2) eq 'ARRAY')) {
+         foreach my $element (@{$arrayref1}, @{$arrayref2}) { $count{$element}++; }
+         foreach my $element (keys(%count)) {
+             if ($count{$element} == 1) {
+                 push(@difference,$element);
+             }
+         }
+     }
+     return @difference;
+ }
+ # -------------------------------------------------------- Initialize user login
+ sub init_user_environment {
+     my ($r, $username, $domain, $authhost, $form, $args) = @_;
+     my $lonids=$Apache::lonnet::perlvar{'lonIDsDir'};
+     my $public=($username eq 'public' && $domain eq 'public');
+ # See if old ID present, if so, remove
+     my ($filename,$cookie,$userroles,$firstaccenv,$timerintenv);
+     my $now=time;
+     if ($public) {
+ 	my $max_public=100;
+ 	my $oldest;
+ 	my $oldest_time=0;
+ 	for(my $next=1;$next<=$max_public;$next++) {
+ 	    if (-e $lonids."/publicuser_$next.id") {
+ 		my $mtime=(stat($lonids."/publicuser_$next.id"))[9];
+ 		if ($mtime<$oldest_time || !$oldest_time) {
+ 		    $oldest_time=$mtime;
+ 		    $oldest=$next;
+ 		}
+ 	    } else {
+ 		$cookie="publicuser_$next";
+ 		last;
+ 	    }
+ 	}
+ 	if (!$cookie) { $cookie="publicuser_$oldest"; }
+     } else {
+ 	# if this isn't a robot, kill any existing non-robot sessions
+ 	if (!$args->{'robot'}) {
+ 	    opendir(DIR,$lonids);
+ 	    while ($filename=readdir(DIR)) {
+ 		if ($filename=~/^$username\_\d+\_$domain\_$authhost\.id$/) {
+ 		    unlink($lonids.'/'.$filename);
+ 		}
+ 	    }
+ 	    closedir(DIR);
+ # If there is a undeleted lockfile for the user's paste buffer remove it.
+             my $namespace = 'nohist_courseeditor';
+             my $lockingkey = 'paste'."\0".'locked_num';
+             my %lockhash = &Apache::lonnet::get($namespace,[$lockingkey],
+                                                 $domain,$username);
+             if (exists($lockhash{$lockingkey})) {
+                 my $delresult = &Apache::lonnet::del($namespace,[$lockingkey],$domain,$username);
+                 unless ($delresult eq 'ok') {
+                     &Apache::lonnet::logthis("Failed to delete paste buffer locking key in $namespace for ".$username.":".$domain." Result was: $delresult");
+                 }
+             }
+ 	}
+ # Give them a new cookie
+ 	my $id = ($args->{'robot'} ? 'robot'.$args->{'robot'}
+ 		                   : $now.$$.int(rand(10000)));
+ 	$cookie="$username\_$id\_$domain\_$authhost";
+ # Initialize roles
+ 	($userroles,$firstaccenv,$timerintenv) =
+             &Apache::lonnet::rolesinit($domain,$username,$authhost);
+     }
+ # ------------------------------------ Check browser type and MathML capability
+     my ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,$clientunicode,
+         $clientos,$clientmobile,$clientinfo,$clientosversion) = &decode_user_agent($r);
+ # ------------------------------------------------------------- Get environment
+     my %userenv = &Apache::lonnet::dump('environment',$domain,$username);
+     my ($tmp) = keys(%userenv);
+     if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
+     } else {
+ 	undef(%userenv);
+     }
+     if (($userenv{'interface'}) && (!$form->{'interface'})) {
+ 	$form->{'interface'}=$userenv{'interface'};
+     }
+     if ($userenv{'texengine'} eq 'ttm') { $clientmathml=1; }
+ # --------------- Do not trust query string to be put directly into environment
+     foreach my $option ('interface','localpath','localres') {
+         $form->{$option}=~s/[\n\r\=]//gs;
+     }
+ # --------------------------------------------------------- Write first profile
+     {
+ 	my %initial_env =
+ 	    ("user.name"          => $username,
+ 	     "user.domain"        => $domain,
+ 	     "user.home"          => $authhost,
+ 	     "browser.type"       => $clientbrowser,
+ 	     "browser.version"    => $clientversion,
+ 	     "browser.mathml"     => $clientmathml,
+ 	     "browser.unicode"    => $clientunicode,
+ 	     "browser.os"         => $clientos,
+              "browser.mobile"     => $clientmobile,
+              "browser.info"       => $clientinfo,
+              "browser.osversion"  => $clientosversion,
+ 	     "server.domain"      => $Apache::lonnet::perlvar{'lonDefDomain'},
+ 	     "request.course.fn"  => '',
+ 	     "request.course.uri" => '',
+ 	     "request.course.sec" => '',
+ 	     "request.role"       => 'cm',
+ 	     "request.role.adv"   => $env{'user.adv'},
+ 	     "request.host"       => $ENV{'REMOTE_ADDR'},);
+         if ($form->{'localpath'}) {
+ 	    $initial_env{"browser.localpath"}  = $form->{'localpath'};
+ 	    $initial_env{"browser.localres"}   = $form->{'localres'};
+         }
+ 	if ($form->{'interface'}) {
+ 	    $form->{'interface'}=~s/\W//gs;
+ 	    $initial_env{"browser.interface"} = $form->{'interface'};
+ 	    $env{'browser.interface'}=$form->{'interface'};
+ 	}
+         if ($form->{'iptoken'}) {
+             my $lonhost = $r->dir_config('lonHostID');
+             $initial_env{"user.noloadbalance"} = $lonhost;
+             $env{'user.noloadbalance'} = $lonhost;
+         }
+         my %is_adv = ( is_adv => $env{'user.adv'} );
+         my %domdef;
+         unless ($domain eq 'public') {
+             %domdef = &Apache::lonnet::get_domain_defaults($domain);
+         }
+         foreach my $tool ('aboutme','blog','webdav','portfolio') {
+             $userenv{'availabletools.'.$tool} =
+                 &Apache::lonnet::usertools_access($username,$domain,$tool,'reload',
+                                                   undef,\%userenv,\%domdef,\%is_adv);
+         }
+         foreach my $crstype ('official','unofficial','community','textbook','placement') {
+             $userenv{'canrequest.'.$crstype} =
+                 &Apache::lonnet::usertools_access($username,$domain,$crstype,
+                                                   'reload','requestcourses',
+                                                   \%userenv,\%domdef,\%is_adv);
+         }
+         $userenv{'canrequest.author'} =
+             &Apache::lonnet::usertools_access($username,$domain,'requestauthor',
+                                         'reload','requestauthor',
+                                         \%userenv,\%domdef,\%is_adv);
+         my %reqauthor = &Apache::lonnet::get('requestauthor',['author_status','author'],
+                                              $domain,$username);
+         my $reqstatus = $reqauthor{'author_status'};
+         if ($reqstatus eq 'approval' || $reqstatus eq 'approved') {
+             if (ref($reqauthor{'author'}) eq 'HASH') {
+                 $userenv{'requestauthorqueued'} = $reqstatus.':'.
+                                                   $reqauthor{'author'}{'timestamp'};
+             }
+         }
+ 	$env{'user.environment'} = "$lonids/$cookie.id";
+ 	if (tie(my %disk_env,'GDBM_File',"$lonids/$cookie.id",
+ 		 &GDBM_WRCREAT(),0640)) {
+ 	    &_add_to_env(\%disk_env,\%initial_env);
+ 	    &_add_to_env(\%disk_env,\%userenv,'environment.');
+ 	    &_add_to_env(\%disk_env,$userroles);
+             if (ref($firstaccenv) eq 'HASH') {
+                 &_add_to_env(\%disk_env,$firstaccenv);
+             }
+             if (ref($timerintenv) eq 'HASH') {
+                 &_add_to_env(\%disk_env,$timerintenv);
+             }
+ 	    if (ref($args->{'extra_env'})) {
+ 		&_add_to_env(\%disk_env,$args->{'extra_env'});
+ 	    }
+ 	    untie(%disk_env);
+ 	} else {
+ 	    &Apache::lonnet::logthis("<span style=\"color:blue;\">WARNING: ".
+ 			   'Could not create environment storage in lonauth: '.$!.'</span>');
+ 	    return 'error: '.$!;
+ 	}
+     }
+     $env{'request.role'}='cm';
+     $env{'request.role.adv'}=$env{'user.adv'};
+     $env{'browser.type'}=$clientbrowser;
+     return $cookie;
+ }
+ sub _add_to_env {
+     my ($idf,$env_data,$prefix) = @_;
+     if (ref($env_data) eq 'HASH') {
+         while (my ($key,$value) = each(%$env_data)) {
+ 	    $idf->{$prefix.$key} = $value;
+ 	    $env{$prefix.$key}   = $value;
+         }
+     }
+ }
+ # --- Get the symbolic name of a problem and the url
+ sub get_symb {
+     my ($request,$silent) = @_;
+     (my $url=$env{'form.url'}) =~ s-^https?\://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
+     my $symb=($env{'form.symb'} ne '' ? $env{'form.symb'} : (&Apache::lonnet::symbread($url)));
+     if ($symb eq '') {
+         if (!$silent) {
+             if (ref($request)) {
+                 $request->print("Unable to handle ambiguous references:$url:.");
+             }
+             return ();
+         }
+     }
+     &Apache::lonenc::check_decrypt(\$symb);
+     return ($symb);
+ }
+ # --------------------------------------------------------------Get annotation
+ sub get_annotation {
+     my ($symb,$enc) = @_;
+     my $key = $symb;
+     if (!$enc) {
+         $key =
+             &Apache::lonnet::clutter((&Apache::lonnet::decode_symb($symb))[2]);
+     }
+     my %annotation=&Apache::lonnet::get('nohist_annotations',[$key]);
+     return $annotation{$key};
+ }
+ sub clean_symb {
+     my ($symb,$delete_enc) = @_;
+     &Apache::lonenc::check_decrypt(\$symb);
+     my $enc = $env{'request.enc'};
+     if ($delete_enc) {
+         delete($env{'request.enc'});
+     }
+     return ($symb,$enc);
  }
+ ############################################################
+ ############################################################
+ =pod
+ =head1 Routines for building display used to search for courses
+ =over 4
+ =item * &build_filters()
+ Create markup for a table used to set filters to use when selecting
+ courses in a domain.  Used by lonpickcourse.pm, lonmodifycourse.pm
+ and quotacheck.pl
+ Inputs:
+ filterlist - anonymous array of fields to include as potential filters
+ crstype - course type
+ roleelement - fifth arg in selectcourse_link() populates fifth arg in javascript: opencrsbrowser() function, used
+               to pop-open a course selector (will contain "extra element").
+ multelement - if multiple course selections will be allowed, this will be a hidden form element: name: multiple; value: 1
+ filter - anonymous hash of criteria and their values
+ action - form action
+ numfiltersref - ref to scalar (count of number of elements in institutional codes -- e.g., 4 for year, semester, department, and number)
+ caller - caller context (e.g., set to 'modifycourse' when routine is called from lonmodifycourse.pm)
+ cloneruname - username of owner of new course who wants to clone
+ clonerudom - domain of owner of new course who wants to clone
+ typeelem - text to use for left column in row containing course type (i.e., Course, Community or Course/Community)
+ codetitlesref - reference to array of titles of components in institutional codes (official courses)
+ codedom - domain
+ formname - value of form element named "form".
+ fixeddom - domain, if fixed.
+ prevphase - value to assign to form element named "phase" when going back to the previous screen
+ cnameelement - name of form element in form on opener page which will receive title of selected course
+ cnumelement - name of form element in form on opener page which will receive courseID  of selected course
+ cdomelement - name of form element in form on opener page which will receive domain of selected course
+ setroles - includes access constraint identifier when setting a roles-based condition for acces to a portfolio file
+ clonetext - hidden form elements containing list of courses cloneable by intended course owner when DC creates a course
+ clonewarning - warning message about missing information for intended course owner when DC creates a course
+ Returns: $output - HTML for display of search criteria, and hidden form elements.
+ Side Effects: None
+ =cut
+ # ---------------------------------------------- search for courses based on last activity etc.
+ sub build_filters {
+     my ($filterlist,$crstype,$roleelement,$multelement,$filter,$action,
+         $numtitlesref,$caller,$cloneruname,$clonerudom,$typeelement,
+         $codetitlesref,$codedom,$formname,$fixeddom,$prevphase,
+         $cnameelement,$cnumelement,$cdomelement,$setroles,
+         $clonetext,$clonewarning) = @_;
+     my ($list,$jscript);
+     my $onchange = 'javascript:updateFilters(this)';
+     my ($domainselectform,$sincefilterform,$createdfilterform,
+         $ownerdomselectform,$persondomselectform,$instcodeform,
+         $typeselectform,$instcodetitle);
+     if ($formname eq '') {
+         $formname = $caller;
+     }
+     foreach my $item (@{$filterlist}) {
+         unless (($item eq 'descriptfilter') || ($item eq 'instcodefilter') ||
+                 ($item eq 'sincefilter') || ($item eq 'createdfilter')) {
+             if ($item eq 'domainfilter') {
+                 $filter->{$item} = &LONCAPA::clean_domain($filter->{$item});
+             } elsif ($item eq 'coursefilter') {
+                 $filter->{$item} = &LONCAPA::clean_courseid($filter->{$item});
+             } elsif ($item eq 'ownerfilter') {
+                 $filter->{$item} = &LONCAPA::clean_username($filter->{$item});
+             } elsif ($item eq 'ownerdomfilter') {
+                 $filter->{'ownerdomfilter'} =
+                     &LONCAPA::clean_domain($filter->{$item});
+                 $ownerdomselectform = &select_dom_form($filter->{'ownerdomfilter'},
+                                                        'ownerdomfilter',1);
+             } elsif ($item eq 'personfilter') {
+                 $filter->{$item} = &LONCAPA::clean_username($filter->{$item});
+             } elsif ($item eq 'persondomfilter') {
+                 $persondomselectform = &select_dom_form($filter->{'persondomfilter'},
+                                                         'persondomfilter',1);
+             } else {
+                 $filter->{$item} =~ s/\W//g;
+             }
+             if (!$filter->{$item}) {
+                 $filter->{$item} = '';
+             }
+         }
+         if ($item eq 'domainfilter') {
+             my $allow_blank = 1;
+             if ($formname eq 'portform') {
+                 $allow_blank=0;
+             } elsif ($formname eq 'studentform') {
+                 $allow_blank=0;
+             }
+             if ($fixeddom) {
+                 $domainselectform = '<input type="hidden" name="domainfilter"'.
+                                     ' value="'.$codedom.'" />'.
+                                     &Apache::lonnet::domain($codedom,'description');
+             } else {
+                 $domainselectform = &select_dom_form($filter->{$item},
+                                                      'domainfilter',
+                                                       $allow_blank,'',$onchange);
+             }
+         } else {
+             $list->{$item} = &HTML::Entities::encode($filter->{$item},'<>&"');
+         }
+     }
+     # last course activity filter and selection
+     $sincefilterform = &timebased_select_form('sincefilter',$filter);
+     # course created filter and selection
+     if (exists($filter->{'createdfilter'})) {
+         $createdfilterform = &timebased_select_form('createdfilter',$filter);
+     }
+     my $prefix = $crstype;
+     if ($crstype eq 'Placement') {
+         $prefix = 'Placement Test'
+     }
+     my %lt = &Apache::lonlocal::texthash(
+                 'cac' => "$prefix Activity",
+                 'ccr' => "$prefix Created",
+                 'cde' => "$prefix Title",
+                 'cdo' => "$prefix Domain",
+                 'ins' => 'Institutional Code',
+                 'inc' => 'Institutional Categorization',
+                 'cow' => "$prefix Owner/Co-owner",
+                 'cop' => "$prefix Personnel Includes",
+                 'cog' => 'Type',
+              );
+     if (($formname eq 'ccrs') || ($formname eq 'requestcrs')) {
+         my $typeval = 'Course';
+         if ($crstype eq 'Community') {
+             $typeval = 'Community';
+         } elsif ($crstype eq 'Placement') {
+             $typeval = 'Placement';
+         }
+         $typeselectform = '<input type="hidden" name="type" value="'.$typeval.'" />';
+     } else {
+         $typeselectform =  '<select name="type" size="1"';
+         if ($onchange) {
+             $typeselectform .= ' onchange="'.$onchange.'"';
+         }
+         $typeselectform .= '>'."\n";
+         foreach my $posstype ('Course','Community','Placement') {
+             my $shown;
+             if ($posstype eq 'Placement') {
+                 $shown = &mt('Placement Test');
+             } else {
+                 $shown = &mt($posstype);
+             }
+             $typeselectform.='<option value="'.$posstype.'"'.
+                 ($posstype eq $crstype ? ' selected="selected" ' : ''). ">".$shown."</option>\n";
+         }
+         $typeselectform.="</select>";
+     }
+     my ($cloneableonlyform,$cloneabletitle);
+     if (exists($filter->{'cloneableonly'})) {
+         my $cloneableon = '';
+         my $cloneableoff = ' checked="checked"';
+         if ($filter->{'cloneableonly'}) {
+             $cloneableon = $cloneableoff;
+             $cloneableoff = '';
+         }
+         $cloneableonlyform = '<span class="LC_nobreak"><label><input type="radio" name="cloneableonly" value="1" '.$cloneableon.'/>&nbsp;'.&mt('Required').'</label>'.('&nbsp;'x3).'<label><input type="radio" name="cloneableonly" value="" '.$cloneableoff.' />&nbsp;'.&mt('No restriction').'</label></span>';
+         if ($formname eq 'ccrs') {
+             $cloneabletitle = &mt('Cloneable for [_1]',$cloneruname.':'.$clonerudom);
+         } else {
+             $cloneabletitle = &mt('Cloneable by you');
+         }
+     }
+     my $officialjs;
+     if ($crstype eq 'Course') {
+         if (exists($filter->{'instcodefilter'})) {
+ #            if (($fixeddom) || ($formname eq 'requestcrs') ||
+ #                ($formname eq 'modifycourse') || ($formname eq 'filterpicker')) {
+             if ($codedom) {
+                 $officialjs = 1;
+                 ($instcodeform,$jscript,$$numtitlesref) =
+                     &Apache::courseclassifier::instcode_selectors($codedom,'filterpicker',
+                                                                   $officialjs,$codetitlesref);
+                 if ($jscript) {
+                     $jscript = '<script type="text/javascript">'."\n".
+                                '// <![CDATA['."\n".
+                                $jscript."\n".
+                                '// ]]>'."\n".
+                                '</script>'."\n";
+                 }
+             }
+             if ($instcodeform eq '') {
+                 $instcodeform =
+                     '<input type="text" name="instcodefilter" size="10" value="'.
+                     $list->{'instcodefilter'}.'" />';
+                 $instcodetitle = $lt{'ins'};
+             } else {
+                 $instcodetitle = $lt{'inc'};
+             }
+             if ($fixeddom) {
+                 $instcodetitle .= '<br />('.$codedom.')';
+             }
+         }
+     }
+     my $output = qq|
+ <form method="post" name="filterpicker" action="$action">
+ <input type="hidden" name="form" value="$formname" />
+ |;
+     if ($formname eq 'modifycourse') {
+         $output .= '<input type="hidden" name="phase" value="courselist" />'."\n".
+                    '<input type="hidden" name="prevphase" value="'.
+                    $prevphase.'" />'."\n";
+     } elsif ($formname eq 'quotacheck') {
+         $output .= qq|
+ <input type="hidden" name="sortby" value="" />
+ <input type="hidden" name="sortorder" value="" />
+ |;
+     } else {
+         my $name_input;
+         if ($cnameelement ne '') {
+             $name_input = '<input type="hidden" name="cnameelement" value="'.
+                           $cnameelement.'" />';
+         }
+         $output .= qq|
+ <input type="hidden" name="cnumelement" value="$cnumelement" />
+ <input type="hidden" name="cdomelement" value="$cdomelement" />
+ $name_input
+ $roleelement
+ $multelement
+ $typeelement
+ |;
+         if ($formname eq 'portform') {
+             $output .= '<input type="hidden" name="setroles" value="'.$setroles.'" />'."\n";
+         }
+     }
+     if ($fixeddom) {
+         $output .= '<input type="hidden" name="fixeddom" value="'.$fixeddom.'" />'."\n";
+     }
+     $output .= "<br />\n".&Apache::lonhtmlcommon::start_pick_box();
+     if ($sincefilterform) {
+         $output .= &Apache::lonhtmlcommon::row_title($lt{'cac'})
+                   .$sincefilterform
+                   .&Apache::lonhtmlcommon::row_closure();
+     }
+     if ($createdfilterform) {
+         $output .= &Apache::lonhtmlcommon::row_title($lt{'ccr'})
+                   .$createdfilterform
+                   .&Apache::lonhtmlcommon::row_closure();
+     }
+     if ($domainselectform) {
+         $output .= &Apache::lonhtmlcommon::row_title($lt{'cdo'})
+                   .$domainselectform
+                   .&Apache::lonhtmlcommon::row_closure();
+     }
+     if ($typeselectform) {
+         if (($formname eq 'ccrs') || ($formname eq 'requestcrs')) {
+             $output .= $typeselectform;
+         } else {
+             $output .= &Apache::lonhtmlcommon::row_title($lt{'cog'})
+                       .$typeselectform
+                       .&Apache::lonhtmlcommon::row_closure();
+         }
+     }
+     if ($instcodeform) {
+         $output .= &Apache::lonhtmlcommon::row_title($instcodetitle)
+                   .$instcodeform
+                   .&Apache::lonhtmlcommon::row_closure();
+     }
+     if (exists($filter->{'ownerfilter'})) {
+         $output .= &Apache::lonhtmlcommon::row_title($lt{'cow'}).
+                    '<table><tr><td>'.&mt('Username').'<br />'.
+                    '<input type="text" name="ownerfilter" size="20" value="'.
+                    $list->{'ownerfilter'}.'" /></td><td>'.&mt('Domain').'<br />'.
+                    $ownerdomselectform.'</td></tr></table>'.
+                    &Apache::lonhtmlcommon::row_closure();
+     }
+     if (exists($filter->{'personfilter'})) {
+         $output .= &Apache::lonhtmlcommon::row_title($lt{'cop'}).
+                    '<table><tr><td>'.&mt('Username').'<br />'.
+                    '<input type="text" name="personfilter" size="20" value="'.
+                    $list->{'personfilter'}.'" /></td><td>'.&mt('Domain').'<br />'.
+                    $persondomselectform.'</td></tr></table>'.
+                    &Apache::lonhtmlcommon::row_closure();
+     }
+     if (exists($filter->{'coursefilter'})) {
+         $output .= &Apache::lonhtmlcommon::row_title(&mt('LON-CAPA course ID'))
+                   .'<input type="text" name="coursefilter" size="25" value="'
+                   .$list->{'coursefilter'}.'" />'
+                   .&Apache::lonhtmlcommon::row_closure();
+     }
+     if ($cloneableonlyform) {
+         $output .= &Apache::lonhtmlcommon::row_title($cloneabletitle).
+                    $cloneableonlyform.&Apache::lonhtmlcommon::row_closure();
+     }
+     if (exists($filter->{'descriptfilter'})) {
+         $output .= &Apache::lonhtmlcommon::row_title($lt{'cde'})
+                   .'<input type="text" name="descriptfilter" size="40" value="'
+                   .$list->{'descriptfilter'}.'" />'
+                   .&Apache::lonhtmlcommon::row_closure(1);
+     }
+     $output .= &Apache::lonhtmlcommon::end_pick_box().'<p>'.$clonetext."\n".
+                '<input type="hidden" name="updater" value="" />'."\n".
+                '<input type="submit" name="gosearch" value="'.
+                &mt('Search').'" /></p>'."\n".'</form>'."\n".'<hr />'."\n";
+     return $jscript.$clonewarning.$output;
+ }
+ =pod
+ =item * &timebased_select_form()
+ Create markup for a dropdown list used to select a time-based
+ filter e.g., Course Activity, Course Created, when searching for courses
+ or communities
+ Inputs:
+ item - name of form element (sincefilter or createdfilter)
+ filter - anonymous hash of criteria and their values
+ Returns: HTML for a select box contained a blank, then six time selections,
+          with value set in incoming form variables currently selected.
+ Side Effects: None
+ =cut
+ sub timebased_select_form {
+     my ($item,$filter) = @_;
+     if (ref($filter) eq 'HASH') {
+         $filter->{$item} =~ s/[^\d-]//g;
+         if (!$filter->{$item}) { $filter->{$item}=-1; }
+         return &select_form(
+                             $filter->{$item},
+                             $item,
+                             {      '-1' => '',
+                                 '86400' => &mt('today'),
+                                '604800' => &mt('last week'),
+                               '2592000' => &mt('last month'),
+                               '7776000' => &mt('last three months'),
+                              '15552000' => &mt('last six months'),
+                              '31104000' => &mt('last year'),
+                     'select_form_order' =>
+                            ['-1','86400','604800','2592000','7776000',
+                             '15552000','31104000']});
+     }
+ }
+ =pod
+ =item * &js_changer()
+ Create script tag containing Javascript used to submit course search form
+ when course type or domain is changed, and also to hide 'Searching ...' on
+ page load completion for page showing search result.
+ Inputs: None
+ Returns: markup containing updateFilters() and hideSearching() javascript functions.
+ Side Effects: None
+ =cut
+ sub js_changer {
+     return <<ENDJS;
+ <script type="text/javascript">
+ // <![CDATA[
+ function updateFilters(caller) {
+     if (typeof(caller) != "undefined") {
+         document.filterpicker.updater.value = caller.name;
+     }
+     document.filterpicker.submit();
+ }
+ function hideSearching() {
+     if (document.getElementById('searching')) {
+         document.getElementById('searching').style.display = 'none';
+     }
+     return;
+ }
+ // ]]>
+ </script>
+ ENDJS
+ }
+ =pod
+ =item * &search_courses()
+ Process selected filters form course search form and pass to lonnet::courseiddump
+ to retrieve a hash for which keys are courseIDs which match the selected filters.
+ Inputs:
+ dom - domain being searched
+ type - course type ('Course' or 'Community' or '.' if any).
+ filter - anonymous hash of criteria and their values
+ numtitles - for institutional codes - number of categories
+ cloneruname - optional username of new course owner
+ clonerudom - optional domain of new course owner
+ domcloner - optional "domcloner" flag; has value=1 if user has ccc priv in domain being filtered by,
+             (used when DC is using course creation form)
+ codetitles - reference to array of titles of components in institutional codes (official courses).
+ cc_clone - escaped comma separated list of courses for which course cloner has active CC role
+            (and so can clone automatically)
+ reqcrsdom - domain of new course, where search_courses is used to identify potential courses to clone
+ reqinstcode - institutional code of new course, where search_courses is used to identify potential
+               courses to clone
+ Returns: %courses - hash of courses satisfying search criteria, keys = course IDs, values are corresponding colon-separated escaped description, institutional code, owner and type.
+ Side Effects: None
+ =cut
+ sub search_courses {
+     my ($dom,$type,$filter,$numtitles,$cloneruname,$clonerudom,$domcloner,$codetitles,
+         $cc_clone,$reqcrsdom,$reqinstcode) = @_;
+     my (%courses,%showcourses,$cloner);
+     if (($filter->{'ownerfilter'} ne '') ||
+         ($filter->{'ownerdomfilter'} ne '')) {
+         $filter->{'combownerfilter'} = $filter->{'ownerfilter'}.':'.
+                                        $filter->{'ownerdomfilter'};
+     }
+     foreach my $item ('descriptfilter','coursefilter','combownerfilter') {
+         if (!$filter->{$item}) {
+             $filter->{$item}='.';
+         }
+     }
+     my $now = time;
+     my $timefilter =
+        ($filter->{'sincefilter'}==-1?1:$now-$filter->{'sincefilter'});
+     my ($createdbefore,$createdafter);
+     if (($filter->{'createdfilter'} ne '') && ($filter->{'createdfilter'} !=-1)) {
+         $createdbefore = $now;
+         $createdafter = $now-$filter->{'createdfilter'};
+     }
+     my ($instcodefilter,$regexpok);
+     if ($numtitles) {
+         if ($env{'form.official'} eq 'on') {
+             $instcodefilter =
+                 &Apache::courseclassifier::instcode_search_str($dom,$numtitles,$codetitles);
+             $regexpok = 1;
+         } elsif ($env{'form.official'} eq 'off') {
+             $instcodefilter = &Apache::courseclassifier::instcode_search_str($dom,$numtitles,$codetitles);
+             unless ($instcodefilter eq '') {
+                 $regexpok = -1;
+             }
+         }
+     } else {
+         $instcodefilter = $filter->{'instcodefilter'};
+     }
+     if ($instcodefilter eq '') { $instcodefilter = '.'; }
+     if ($type eq '') { $type = '.'; }
+     if (($clonerudom ne '') && ($cloneruname ne '')) {
+         $cloner = $cloneruname.':'.$clonerudom;
+     }
+     %courses = &Apache::lonnet::courseiddump($dom,
+                                              $filter->{'descriptfilter'},
+                                              $timefilter,
+                                              $instcodefilter,
+                                              $filter->{'combownerfilter'},
+                                              $filter->{'coursefilter'},
+                                              undef,undef,$type,$regexpok,undef,undef,
+                                              undef,undef,$cloner,$cc_clone,
+                                              $filter->{'cloneableonly'},
+                                              $createdbefore,$createdafter,undef,
+                                              $domcloner,undef,$reqcrsdom,$reqinstcode);
+     if (($filter->{'personfilter'} ne '') && ($filter->{'persondomfilter'} ne '')) {
+         my $ccrole;
+         if ($type eq 'Community') {
+             $ccrole = 'co';
+         } else {
+             $ccrole = 'cc';
+         }
+         my %rolehash = &Apache::lonnet::get_my_roles($filter->{'personfilter'},
+                                                      $filter->{'persondomfilter'},
+                                                      'userroles',undef,
+                                                      [$ccrole,'in','ad','ep','ta','cr'],
+                                                      $dom);
+         foreach my $role (keys(%rolehash)) {
+             my ($cnum,$cdom,$courserole) = split(':',$role);
+             my $cid = $cdom.'_'.$cnum;
+             if (exists($courses{$cid})) {
+                 if (ref($courses{$cid}) eq 'HASH') {
+                     if (ref($courses{$cid}{roles}) eq 'ARRAY') {
+                         if (!grep(/^\Q$courserole\E$/,@{$courses{$cid}{roles}})) {
+                             push (@{$courses{$cid}{roles}},$courserole);
+                         }
+                     } else {
+                         $courses{$cid}{roles} = [$courserole];
+                     }
+                     $showcourses{$cid} = $courses{$cid};
+                 }
+             }
+         }
+         %courses = %showcourses;
+     }
+     return %courses;
+ }
  =pod
  =back
+ =head1 Routines for version requirements for current course.
+ =over 4
+ =item * &check_release_required()
+ Compares required LON-CAPA version with version on server, and
+ if required version is newer looks for a server with the required version.
+ Looks first at servers in user's owen domain; if none suitable, looks at
+ servers in course's domain are permitted to host sessions for user's domain.
+ Inputs:
+ $loncaparev - Version on current server (format: Major.Minor.Subrelease-datestamp)
+ $courseid - Course ID of current course
+ $rolecode - User's current role in course (for switchserver query string).
+ $required - LON-CAPA version needed by course (format: Major.Minor).
+ Returns:
+ $switchserver - query string tp append to /adm/switchserver call (if
+                 current server's LON-CAPA version is too old.
+ $warning - Message is displayed if no suitable server could be found.
  =cut
+ sub check_release_required {
+     my ($loncaparev,$courseid,$rolecode,$required) = @_;
+     my ($switchserver,$warning);
+     if ($required ne '') {
+         my ($reqdmajor,$reqdminor) = ($required =~ /^(\d+)\.(\d+)$/);
+         my ($major,$minor) = ($loncaparev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
+         if ($reqdmajor ne '' && $reqdminor ne '') {
+             my $otherserver;
+             if (($major eq '' && $minor eq '') ||
+                 (($reqdmajor > $major) || (($reqdmajor == $major) && ($reqdminor > $minor)))) {
+                 my ($userdomserver) = &Apache::lonnet::choose_server($env{'user.domain'},undef,$required,1);
+                 my $switchlcrev =
+                     &Apache::lonnet::get_server_loncaparev($env{'user.domain'},
+                                                            $userdomserver);
+                 my ($swmajor,$swminor) = ($switchlcrev =~ /^\'?(\d+)\.(\d+)\.[\w.\-]+\'?$/);
+                 if (($swmajor eq '' && $swminor eq '') || ($reqdmajor > $swmajor) ||
+                     (($reqdmajor == $swmajor) && ($reqdminor > $swminor))) {
+                     my $cdom = $env{'course.'.$courseid.'.domain'};
+                     if ($cdom ne $env{'user.domain'}) {
+                         my ($coursedomserver,$coursehostname) = &Apache::lonnet::choose_server($cdom,undef,$required,1);
+                         my $serverhomeID = &Apache::lonnet::get_server_homeID($coursehostname);
+                         my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
+                         my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
+                         my %udomdefaults = &Apache::lonnet::get_domain_defaults($env{'user.domain'});
+                         my $remoterev = &Apache::lonnet::get_server_loncaparev($serverhomedom,$coursedomserver);
+                         my $canhost =
+                             &Apache::lonnet::can_host_session($env{'user.domain'},
+                                                               $coursedomserver,
+                                                               $remoterev,
+                                                               $udomdefaults{'remotesessions'},
+                                                               $defdomdefaults{'hostedsessions'});
+                         if ($canhost) {
+                             $otherserver = $coursedomserver;
+                         } else {
+                             $warning = &mt('Requires LON-CAPA version [_1].',$env{'course.'.$courseid.'.internal.releaserequired'}).'<br />'. &mt("No suitable server could be found amongst servers in either your own domain or in the course's domain.");
+                         }
+                     } else {
+                         $warning = &mt('Requires LON-CAPA version [_1].',$env{'course.'.$courseid.'.internal.releaserequired'}).'<br />'.&mt("No suitable server could be found amongst servers in your own domain (which is also the course's domain).");
+                     }
+                 } else {
+                     $otherserver = $userdomserver;
+                 }
+             }
+             if ($otherserver ne '') {
+                 $switchserver = 'otherserver='.$otherserver.'&amp;role='.$rolecode;
+             }
+         }
+     }
+     return ($switchserver,$warning);
+ }
+ =pod
+ =item * &check_release_result()
+ Inputs:
+ $switchwarning - Warning message if no suitable server found to host session.
+ $switchserver - query string to append to /adm/switchserver containing lonHostID
+                 and current role.
+ Returns: HTML to display with information about requirement to switch server.
+          Either displaying warning with link to Roles/Courses screen or
+          display link to switchserver.
+ =cut
+ sub check_release_result {
+     my ($switchwarning,$switchserver) = @_;
+     my $output = &start_page('Selected course unavailable on this server').
+                  '<p class="LC_warning">';
+     if ($switchwarning) {
+         $output .= $switchwarning.'<br /><a href="/adm/roles">';
+         if (&show_course()) {
+             $output .= &mt('Display courses');
+         } else {
+             $output .= &mt('Display roles');
+         }
+         $output .= '</a>';
+     } elsif ($switchserver) {
+         $output .= &mt('This course requires a newer version of LON-CAPA than is installed on this server.').
+                    '<br />'.
+                    '<a href="/adm/switchserver?'.$switchserver.'">'.
+                    &mt('Switch Server').
+                    '</a>';
+     }
+     $output .= '</p>'.&end_page();
+     return $output;
+ }
+ =pod
+ =item * &needs_coursereinit()
+ Determine if course contents stored for user's session needs to be
+ refreshed, because content has changed since "Big Hash" last tied.
+ Check for change is made if time last checked is more than 10 minutes ago
+ (by default).
+ Inputs:
+ $loncaparev - Version on current server (format: Major.Minor.Subrelease-datestamp)
+ $interval (optional) - Time which may elapse (in s) between last check for content
+                        change in current course. (default: 600 s).
+ Returns: an array; first element is:
+ =over 4
+ 'switch' - if content updates mean user's session
+            needs to be switched to a server running a newer LON-CAPA version
+ 'update' - if course session needs to be refreshed (i.e., Big Hash needs to be reloaded)
+            on current server hosting user's session
+ ''       - if no action required.
+ =back
+ If first item element is 'switch':
+ second item is $switchwarning - Warning message if no suitable server found to host session.
+ third item is $switchserver - query string to append to /adm/switchserver containing lonHostID
+                               and current role.
+ otherwise: no other elements returned.
+ =back
+ =cut
+ sub needs_coursereinit {
+     my ($loncaparev,$interval) = @_;
+     return() unless ($env{'request.course.id'} && $env{'request.course.tied'});
+     my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+     my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+     my $now = time;
+     if ($interval eq '') {
+         $interval = 600;
+     }
+     if (($now-$env{'request.course.timechecked'})>$interval) {
+         my $lastchange = &Apache::lonnet::get_coursechange($cdom,$cnum);
+         &Apache::lonnet::appenv({'request.course.timechecked'=>$now});
+         if ($lastchange > $env{'request.course.tied'}) {
+             my %curr_reqd_hash = &Apache::lonnet::userenvironment($cdom,$cnum,'internal.releaserequired');
+             if ($curr_reqd_hash{'internal.releaserequired'} ne '') {
+                 my $required = $env{'course.'.$cdom.'_'.$cnum.'.internal.releaserequired'};
+                 if ($curr_reqd_hash{'internal.releaserequired'} ne $required) {
+                     &Apache::lonnet::appenv({'course.'.$cdom.'_'.$cnum.'.internal.releaserequired' =>
+                                              $curr_reqd_hash{'internal.releaserequired'}});
+                     my ($switchserver,$switchwarning) =
+                         &check_release_required($loncaparev,$cdom.'_'.$cnum,$env{'request.role'},
+                                                 $curr_reqd_hash{'internal.releaserequired'});
+                     if ($switchwarning ne '' || $switchserver ne '') {
+                         return ('switch',$switchwarning,$switchserver);
+                     }
+                 }
+             }
+             return ('update');
+         }
+     }
+     return ();
+ }
+ sub update_content_constraints {
+     my ($cdom,$cnum,$chome,$cid) = @_;
+     my %curr_reqd_hash = &Apache::lonnet::userenvironment($cdom,$cnum,'internal.releaserequired');
+     my ($reqdmajor,$reqdminor) = split(/\./,$curr_reqd_hash{'internal.releaserequired'});
+     my %checkresponsetypes;
+     foreach my $key (keys(%Apache::lonnet::needsrelease)) {
+         my ($item,$name,$value) = split(/:/,$key);
+         if ($item eq 'resourcetag') {
+             if ($name eq 'responsetype') {
+                 $checkresponsetypes{$value} = $Apache::lonnet::needsrelease{$key}
+             }
+         }
+     }
+     my $navmap = Apache::lonnavmaps::navmap->new();
+     if (defined($navmap)) {
+         my %allresponses;
+         foreach my $res ($navmap->retrieveResources(undef,sub { $_[0]->is_problem() },1,0)) {
+             my %responses = $res->responseTypes();
+             foreach my $key (keys(%responses)) {
+                 next unless(exists($checkresponsetypes{$key}));
+                 $allresponses{$key} += $responses{$key};
+             }
+         }
+         foreach my $key (keys(%allresponses)) {
+             my ($major,$minor) = split(/\./,$checkresponsetypes{$key});
+             if (($major > $reqdmajor) || ($major == $reqdmajor && $minor > $reqdminor)) {
+                 ($reqdmajor,$reqdminor) = ($major,$minor);
+             }
+         }
+         undef($navmap);
+     }
+     unless (($reqdmajor eq '') && ($reqdminor eq '')) {
+         &Apache::lonnet::update_released_required($reqdmajor.'.'.$reqdminor,$cdom,$cnum,$chome,$cid);
+     }
+     return;
+ }
+ sub allmaps_incourse {
+     my ($cdom,$cnum,$chome,$cid) = @_;
+     if ($cdom eq '' || $cnum eq '' || $chome eq '' || $cid eq '') {
+         $cid = $env{'request.course.id'};
+         $cdom = $env{'course.'.$cid.'.domain'};
+         $cnum = $env{'course.'.$cid.'.num'};
+         $chome = $env{'course.'.$cid.'.home'};
+     }
+     my %allmaps = ();
+     my $lastchange =
+         &Apache::lonnet::get_coursechange($cdom,$cnum);
+     if ($lastchange > $env{'request.course.tied'}) {
+         my ($furl,$ferr) = &Apache::lonuserstate::readmap("$cdom/$cnum");
+         unless ($ferr) {
+             &update_content_constraints($cdom,$cnum,$chome,$cid);
+         }
+     }
+     my $navmap = Apache::lonnavmaps::navmap->new();
+     if (defined($navmap)) {
+         foreach my $res ($navmap->retrieveResources(undef,sub { $_[0]->is_map() },1,0,1)) {
+             $allmaps{$res->src()} = 1;
+         }
+     }
+     return \%allmaps;
+ }
+ sub parse_supplemental_title {
+     my ($title) = @_;
+     my ($foldertitle,$renametitle);
+     if ($title =~ /&amp;&amp;&amp;/) {
+         $title = &HTML::Entites::decode($title);
+     }
+     if ($title =~ m/^(\d+)___&&&___($match_username)___&&&___($match_domain)___&&&___(.*)$/) {
+         $renametitle=$4;
+         my ($time,$uname,$udom) = ($1,$2,$3);
+         $foldertitle=&Apache::lontexconvert::msgtexconverted($4);
+         my $name =  &plainname($uname,$udom);
+         $name = &HTML::Entities::encode($name,'"<>&\'');
+         $renametitle = &HTML::Entities::encode($renametitle,'"<>&\'');
+         $title='<i>'.&Apache::lonlocal::locallocaltime($time).'</i> '.
+             $name.': <br />'.$foldertitle;
+     }
+     if (wantarray) {
+         return ($title,$foldertitle,$renametitle);
+     }
+     return $title;
+ }
+ sub recurse_supplemental {
+     my ($cnum,$cdom,$suppmap,$numfiles,$errors) = @_;
+     if ($suppmap) {
+         my ($errtext,$fatal) = &LONCAPA::map::mapread('/uploaded/'.$cdom.'/'.$cnum.'/'.$suppmap);
+         if ($fatal) {
+             $errors ++;
+         } else {
+             if ($#LONCAPA::map::resources > 0) {
+                 foreach my $res (@LONCAPA::map::resources) {
+                     my ($title,$src,$ext,$type,$status)=split(/\:/,$res);
+                     if (($src ne '') && ($status eq 'res')) {
+                         if ($src =~ m{^\Q/uploaded/$cdom/$cnum/\E(supplemental_\d+\.sequence)$}) {
+                             ($numfiles,$errors) = &recurse_supplemental($cnum,$cdom,$1,$numfiles,$errors);
+                         } else {
+                             $numfiles ++;
+                         }
+                     }
+                 }
+             }
+         }
+     }
+     return ($numfiles,$errors);
+ }
+ sub symb_to_docspath {
+     my ($symb) = @_;
+     return unless ($symb);
+     my ($mapurl,$id,$resurl) = &Apache::lonnet::decode_symb($symb);
+     if ($resurl=~/\.(sequence|page)$/) {
+         $mapurl=$resurl;
+     } elsif ($resurl eq 'adm/navmaps') {
+         $mapurl=$env{'course.'.$env{'request.course.id'}.'.url'};
+     }
+     my $mapresobj;
+     my $navmap = Apache::lonnavmaps::navmap->new();
+     if (ref($navmap)) {
+         $mapresobj = $navmap->getResourceByUrl($mapurl);
+     }
+     $mapurl=~s{^.*/([^/]+)\.(\w+)$}{$1};
+     my $type=$2;
+     my $path;
+     if (ref($mapresobj)) {
+         my $pcslist = $mapresobj->map_hierarchy();
+         if ($pcslist ne '') {
+             foreach my $pc (split(/,/,$pcslist)) {
+                 next if ($pc <= 1);
+                 my $res = $navmap->getByMapPc($pc);
+                 if (ref($res)) {
+                     my $thisurl = $res->src();
+                     $thisurl=~s{^.*/([^/]+)\.\w+$}{$1};
+                     my $thistitle = $res->title();
+                     $path .= '&'.
+                              &Apache::lonhtmlcommon::entity_encode($thisurl).'&'.
+                              &escape($thistitle).
+                              ':'.$res->randompick().
+                              ':'.$res->randomout().
+                              ':'.$res->encrypted().
+                              ':'.$res->randomorder().
+                              ':'.$res->is_page();
+                 }
+             }
+         }
+         $path =~ s/^\&//;
+         my $maptitle = $mapresobj->title();
+         if ($mapurl eq 'default') {
+             $maptitle = 'Main Content';
+         }
+         $path .= (($path ne '')? '&' : '').
+                  &Apache::lonhtmlcommon::entity_encode($mapurl).'&'.
+                  &escape($maptitle).
+                  ':'.$mapresobj->randompick().
+                  ':'.$mapresobj->randomout().
+                  ':'.$mapresobj->encrypted().
+                  ':'.$mapresobj->randomorder().
+                  ':'.$mapresobj->is_page();
+     } else {
+         my $maptitle = &Apache::lonnet::gettitle($mapurl);
+         my $ispage = (($type eq 'page')? 1 : '');
+         if ($mapurl eq 'default') {
+             $maptitle = 'Main Content';
+         }
+         $path = &Apache::lonhtmlcommon::entity_encode($mapurl).'&'.
+                 &escape($maptitle).':::::'.$ispage;
+     }
+     unless ($mapurl eq 'default') {
+         $path = 'default&'.
+                 &escape('Main Content').
+                 ':::::&'.$path;
+     }
+     return $path;
+ }
+ sub captcha_display {
+     my ($context,$lonhost) = @_;
+     my ($output,$error);
+     my ($captcha,$pubkey,$privkey,$version) =
+         &get_captcha_config($context,$lonhost);
+     if ($captcha eq 'original') {
+         $output = &create_captcha();
+         unless ($output) {
+             $error = 'captcha';
+         }
+     } elsif ($captcha eq 'recaptcha') {
+         $output = &create_recaptcha($pubkey,$version);
+         unless ($output) {
+             $error = 'recaptcha';
+         }
+     }
+     return ($output,$error,$captcha,$version);
+ }
+ sub captcha_response {
+     my ($context,$lonhost) = @_;
+     my ($captcha_chk,$captcha_error);
+     my ($captcha,$pubkey,$privkey,$version) = &get_captcha_config($context,$lonhost);
+     if ($captcha eq 'original') {
+         ($captcha_chk,$captcha_error) = &check_captcha();
+     } elsif ($captcha eq 'recaptcha') {
+         $captcha_chk = &check_recaptcha($privkey,$version);
+     } else {
+         $captcha_chk = 1;
+     }
+     return ($captcha_chk,$captcha_error);
+ }
+ sub get_captcha_config {
+     my ($context,$lonhost) = @_;
+     my ($captcha,$pubkey,$privkey,$version,$hashtocheck);
+     my $hostname = &Apache::lonnet::hostname($lonhost);
+     my $serverhomeID = &Apache::lonnet::get_server_homeID($hostname);
+     my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
+     if ($context eq 'usercreation') {
+         my %domconfig = &Apache::lonnet::get_dom('configuration',[$context],$serverhomedom);
+         if (ref($domconfig{$context}) eq 'HASH') {
+             $hashtocheck = $domconfig{$context}{'cancreate'};
+             if (ref($hashtocheck) eq 'HASH') {
+                 if ($hashtocheck->{'captcha'} eq 'recaptcha') {
+                     if (ref($hashtocheck->{'recaptchakeys'}) eq 'HASH') {
+                         $pubkey = $hashtocheck->{'recaptchakeys'}{'public'};
+                         $privkey = $hashtocheck->{'recaptchakeys'}{'private'};
+                     }
+                     if ($privkey && $pubkey) {
+                         $captcha = 'recaptcha';
+                         $version = $hashtocheck->{'recaptchaversion'};
+                         if ($version ne '2') {
+                             $version = 1;
+                         }
+                     } else {
+                         $captcha = 'original';
+                     }
+                 } elsif ($hashtocheck->{'captcha'} ne 'notused') {
+                     $captcha = 'original';
+                 }
+             }
+         } else {
+             $captcha = 'captcha';
+         }
+     } elsif ($context eq 'login') {
+         my %domconfhash = &Apache::loncommon::get_domainconf($serverhomedom);
+         if ($domconfhash{$serverhomedom.'.login.captcha'} eq 'recaptcha') {
+             $pubkey = $domconfhash{$serverhomedom.'.login.recaptchakeys_public'};
+             $privkey = $domconfhash{$serverhomedom.'.login.recaptchakeys_private'};
+             if ($privkey && $pubkey) {
+                 $captcha = 'recaptcha';
+                 $version = $domconfhash{$serverhomedom.'.login.recaptchaversion'};
+                 if ($version ne '2') {
+                     $version = 1;
+                 }
+             } else {
+                 $captcha = 'original';
+             }
+         } elsif ($domconfhash{$serverhomedom.'.login.captcha'} eq 'original') {
+             $captcha = 'original';
+         }
+     }
+     return ($captcha,$pubkey,$privkey,$version);
+ }
+ sub create_captcha {
+     my %captcha_params = &captcha_settings();
+     my ($output,$maxtries,$tries) = ('',10,0);
+     while ($tries < $maxtries) {
+         $tries ++;
+         my $captcha = Authen::Captcha->new (
+                                            output_folder => $captcha_params{'output_dir'},
+                                            data_folder   => $captcha_params{'db_dir'},
+                                           );
+         my $md5sum = $captcha->generate_code($captcha_params{'numchars'});
+         if (-e $Apache::lonnet::perlvar{'lonCaptchaDir'}.'/'.$md5sum.'.png') {
+             $output = '<input type="hidden" name="crypt" value="'.$md5sum.'" />'."\n".
+                       &mt('Type in the letters/numbers shown below').'&nbsp;'.
+                       '<input type="text" size="5" name="code" value="" autocomplete="off" />'.
+                       '<br />'.
+                       '<img src="'.$captcha_params{'www_output_dir'}.'/'.$md5sum.'.png" alt="captcha" />';
+             last;
+         }
+     }
+     return $output;
+ }
+ sub captcha_settings {
+     my %captcha_params = (
+                            output_dir     => $Apache::lonnet::perlvar{'lonCaptchaDir'},
+                            www_output_dir => "/captchaspool",
+                            db_dir         => $Apache::lonnet::perlvar{'lonCaptchaDb'},
+                            numchars       => '5',
+                          );
+     return %captcha_params;
+ }
+ sub check_captcha {
+     my ($captcha_chk,$captcha_error);
+     my $code = $env{'form.code'};
+     my $md5sum = $env{'form.crypt'};
+     my %captcha_params = &captcha_settings();
+     my $captcha = Authen::Captcha->new(
+                       output_folder => $captcha_params{'output_dir'},
+                       data_folder   => $captcha_params{'db_dir'},
+                   );
+     $captcha_chk = $captcha->check_code($code,$md5sum);
+     my %captcha_hash = (
+      => 'Code not checked (file error)',
+                        -1      => 'Failed: code expired',
+                        -2      => 'Failed: invalid code (not in database)',
+                        -3      => 'Failed: invalid code (code does not match crypt)',
+     );
+     if ($captcha_chk != 1) {
+         $captcha_error = $captcha_hash{$captcha_chk}
+     }
+     return ($captcha_chk,$captcha_error);
+ }
+ sub create_recaptcha {
+     my ($pubkey,$version) = @_;
+     if ($version >= 2) {
+         return '<div class="g-recaptcha" data-sitekey="'.$pubkey.'"></div>';
+     } else {
+         my $use_ssl;
+         if ($ENV{'SERVER_PORT'} == 443) {
+             $use_ssl = 1;
+         }
+         my $captcha = Captcha::reCAPTCHA->new;
+         return $captcha->get_options_setter({theme => 'white'})."\n".
+                $captcha->get_html($pubkey,undef,$use_ssl).
+                &mt('If the text is hard to read, [_1] will replace them.',
+                    '<img src="/res/adm/pages/refresh.gif" alt="reCAPTCHA refresh" />').
+                '<br /><br />';
+     }
+ }
+ sub check_recaptcha {
+     my ($privkey,$version) = @_;
+     my $captcha_chk;
+     if ($version >= 2) {
+         my $ua = LWP::UserAgent->new;
+         $ua->timeout(10);
+         my %info = (
+                      secret   => $privkey,
+                      response => $env{'form.g-recaptcha-response'},
+                      remoteip => $ENV{'REMOTE_ADDR'},
+                    );
+         my $response = $ua->post('https://www.google.com/recaptcha/api/siteverify',\%info);
+         if ($response->is_success)  {
+             my $data = JSON::DWIW->from_json($response->decoded_content);
+             if (ref($data) eq 'HASH') {
+                 if ($data->{'success'}) {
+                     $captcha_chk = 1;
+                 }
+             }
+         }
+     } else {
+         my $captcha = Captcha::reCAPTCHA->new;
+         my $captcha_result =
+             $captcha->check_answer(
+                                     $privkey,
+                                     $ENV{'REMOTE_ADDR'},
+                                     $env{'form.recaptcha_challenge_field'},
+                                     $env{'form.recaptcha_response_field'},
+                                   );
+         if ($captcha_result->{is_valid}) {
+             $captcha_chk = 1;
+         }
+     }
+     return $captcha_chk;
+ }
+ sub emailusername_info {
+     my @fields = ('firstname','lastname','institution','web','location','officialemail','id');
+     my %titles = &Apache::lonlocal::texthash (
+                      lastname      => 'Last Name',
+                      firstname     => 'First Name',
+                      institution   => 'School/college/university',
+                      location      => "School's city, state/province, country",
+                      web           => "School's web address",
+                      officialemail => 'E-mail address at institution (if different)',
+                      id            => 'Student/Employee ID',
+                  );
+     return (\@fields,\%titles);
+ }
+ sub cleanup_html {
+     my ($incoming) = @_;
+     my $outgoing;
+     if ($incoming ne '') {
+         $outgoing = $incoming;
+         $outgoing =~ s/;/&#059;/g;
+         $outgoing =~ s/\#/&#035;/g;
+         $outgoing =~ s/\&/&#038;/g;
+         $outgoing =~ s/</&#060;/g;
+         $outgoing =~ s/>/&#062;/g;
+         $outgoing =~ s/\(/&#040/g;
+         $outgoing =~ s/\)/&#041;/g;
+         $outgoing =~ s/"/&#034;/g;
+         $outgoing =~ s/'/&#039;/g;
+         $outgoing =~ s/\$/&#036;/g;
+         $outgoing =~ s{/}{&#047;}g;
+         $outgoing =~ s/=/&#061;/g;
+         $outgoing =~ s/\\/&#092;/g
+     }
+     return $outgoing;
+ }
+ # Checks for critical messages and returns a redirect url if one exists.
+ # $interval indicates how often to check for messages.
+ sub critical_redirect {
+     my ($interval) = @_;
+     if ((time-$env{'user.criticalcheck.time'})>$interval) {
+         my @what=&Apache::lonnet::dump('critical', $env{'user.domain'},
+                                         $env{'user.name'});
+         &Apache::lonnet::appenv({'user.criticalcheck.time'=>time});
+         my $redirecturl;
+         if ($what[0]) {
+ 	    if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) {
+ 	        $redirecturl='/adm/email?critical=display';
+ 	        my $url=&Apache::lonnet::absolute_url().$redirecturl;
+                 return (1, $url);
+             }
+         }
+     }
+     return ();
+ }
+ # Use:
+ #   my $answer=reply("encrypt:passwd:$udom:$uname:$upass",$tryserver);
+ #
+ ##################################################
+ #          password associated functions         #
+ ##################################################
+ sub des_keys {
+     # Make a new key for DES encryption.
+     # Each key has two parts which are returned separately.
+     # Please note:  Each key must be passed through the &hex function
+     # before it is output to the web browser.  The hex versions cannot
+     # be used to decrypt.
+     my @hexstr=('0','1','2','3','4','5','6','7',
+                 '8','9','a','b','c','d','e','f');
+     my $lkey='';
+     for (0..7) {
+         $lkey.=$hexstr[rand(15)];
+     }
+     my $ukey='';
+     for (0..7) {
+         $ukey.=$hexstr[rand(15)];
+     }
+     return ($lkey,$ukey);
+ }
+ sub des_decrypt {
+     my ($key,$cyphertext) = @_;
+     my $keybin=pack("H16",$key);
+     my $cypher;
+     if ($Crypt::DES::VERSION>=2.03) {
+         $cypher=new Crypt::DES $keybin;
+     } else {
+         $cypher=new DES $keybin;
+     }
+     my $plaintext='';
+     my $cypherlength = length($cyphertext);
+     my $numchunks = int($cypherlength/32);
+     for (my $j=0; $j<$numchunks; $j++) {
+         my $start = $j*32;
+         my $cypherblock = substr($cyphertext,$start,32);
+         my $chunk =
+             $cypher->decrypt(unpack("a8",pack("H16",substr($cypherblock,0,16))));
+         $chunk .=
+             $cypher->decrypt(unpack("a8",pack("H16",substr($cypherblock,16,16))));
+         $chunk=substr($chunk,1,ord(substr($chunk,0,1)) );
+         $plaintext .= $chunk;
+     }
+     return $plaintext;
+ }
 ;
  __END__;

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>

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	Added in v.1.1260