--- loncom/interface/loncommon.pm	2012/08/01 04:34:00	1.1075.2.11
+++ loncom/interface/loncommon.pm	2013/01/15 18:48:17	1.1075.2.28
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common routines
 #
-# $Id: loncommon.pm,v 1.1075.2.11 2012/08/01 04:34:00 raeburn Exp $
+# $Id: loncommon.pm,v 1.1075.2.28 2013/01/15 18:48:17 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -67,9 +67,13 @@ use Apache::lonhtmlcommon();
 use Apache::loncoursedata();
 use Apache::lontexconvert();
 use Apache::lonclonecourse();
+use Apache::lonuserutils();
+use Apache::lonuserstate();
 use LONCAPA qw(:DEFAULT :match);
 use DateTime::TimeZone;
 use DateTime::Locale::Catalog;
+use Authen::Captcha;
+use Captcha::reCAPTCHA;
 
 # ---------------------------------------------- Designs
 use vars qw(%defaultdesign);
@@ -885,10 +889,14 @@ 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;
+        }
     }
 }
  
@@ -2475,7 +2483,7 @@ 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 '.
@@ -2484,16 +2492,16 @@ sub authform_authorwarning{
     return $result;
 }
 
-sub authform_nochange{  
+sub authform_nochange {
     my %in = (
               formname => 'document.cu',
               kerb_def_dom => 'MSU.EDU',
               @_,
           );
-    my ($authnum,%can_assign) =  &get_assignable_auth($in{'domain'}); 
+    my ($authnum,%can_assign) = &get_assignable_auth($in{'domain'}); 
     my $result;
-    if (keys(%can_assign) == 0) {
-        $result = &mt('Under you current role you are not permitted to change login settings for this user');  
+    if (!$authnum) {
+        $result = &mt('Under your current role you are not permitted to change login settings for this user');
     } else {
         $result = '<label>'.&mt('[_1] Do not change login data',
                   '<input type="radio" name="login" value="nochange" '.
@@ -2513,7 +2521,7 @@ sub authform_kerberos {
               );
     my ($check4,$check5,$krbcheck,$krbarg,$krbver,$result,$authtype,
         $autharg,$jscall);
-    my ($authnum,%can_assign) =  &get_assignable_auth($in{'domain'});
+    my ($authnum,%can_assign) = &get_assignable_auth($in{'domain'});
     if ($in{'kerb_def_auth'} eq 'krb5') {
        $check5 = ' checked="checked"';
     } else {
@@ -2563,7 +2571,7 @@ sub authform_kerberos {
         if (defined($in{'mode'})) {
             if ($in{'mode'} eq 'modifycourse') {
                 if ($authnum == 1) {
-                    $authtype = '<input type="hidden" name="login" value="krb" />';
+                    $authtype = '<input type="radio" name="login" value="krb" />';
                 }
             }
         }
@@ -2575,9 +2583,9 @@ sub authform_kerberos {
                     $krbcheck.' />';
     }
     if (($can_assign{'krb4'} && $can_assign{'krb5'}) ||
-        ($can_assign{'krb4'} && !$can_assign{'krb5'} && 
+        ($can_assign{'krb4'} && !$can_assign{'krb5'} &&
          $in{'curr_authtype'} eq 'krb5') ||
-        (!$can_assign{'krb4'} && $can_assign{'krb5'} && 
+        (!$can_assign{'krb4'} && $can_assign{'krb5'} &&
          $in{'curr_authtype'} eq 'krb4')) {
         $result .= &mt
         ('[_1] Kerberos authenticated with domain [_2] '.
@@ -2613,14 +2621,14 @@ sub authform_kerberos {
     return $result;
 }
 
-sub authform_internal{  
+sub authform_internal {
     my %in = (
                 formname => 'document.cu',
                 kerb_def_dom => 'MSU.EDU',
                 @_,
                 );
     my ($intcheck,$intarg,$result,$authtype,$autharg,$jscall);
-    my ($authnum,%can_assign) =  &get_assignable_auth($in{'domain'});
+    my ($authnum,%can_assign) = &get_assignable_auth($in{'domain'});
     if (defined($in{'curr_authtype'})) {
         if ($in{'curr_authtype'} eq 'int') {
             if ($can_assign{'int'}) {
@@ -2649,7 +2657,7 @@ sub authform_internal{
         if (defined($in{'mode'})) {
             if ($in{'mode'} eq 'modifycourse') {
                 if ($authnum == 1) {
-                    $authtype = '<input type="hidden" name="login" value="int" />';
+                    $authtype = '<input type="radio" name="login" value="int" />';
                 }
             }
         }
@@ -2668,14 +2676,14 @@ sub authform_internal{
     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);
-    my ($authnum,%can_assign) =  &get_assignable_auth($in{'domain'});
+    my ($authnum,%can_assign) = &get_assignable_auth($in{'domain'});
     if (defined($in{'curr_authtype'})) {
         if ($in{'curr_authtype'} eq 'loc') {
             if ($can_assign{'loc'}) {
@@ -2704,7 +2712,7 @@ sub authform_local{
         if (defined($in{'mode'})) {
             if ($in{'mode'} eq 'modifycourse') {
                 if ($authnum == 1) {
-                    $authtype = '<input type="hidden" name="login" value="loc" />';
+                    $authtype = '<input type="radio" name="login" value="loc" />';
                 }
             }
         }
@@ -2722,14 +2730,14 @@ sub authform_local{
     return $result;
 }
 
-sub authform_filesystem{  
+sub authform_filesystem {
     my %in = (
               formname => 'document.cu',
               kerb_def_dom => 'MSU.EDU',
               @_,
               );
     my ($fsyscheck,$result,$authtype,$autharg,$jscall);
-    my ($authnum,%can_assign) =  &get_assignable_auth($in{'domain'});
+    my ($authnum,%can_assign) = &get_assignable_auth($in{'domain'});
     if (defined($in{'curr_authtype'})) {
         if ($in{'curr_authtype'} eq 'fsys') {
             if ($can_assign{'fsys'}) {
@@ -2755,7 +2763,7 @@ sub authform_filesystem{
         if (defined($in{'mode'})) {
             if ($in{'mode'} eq 'modifycourse') {
                 if ($authnum == 1) {
-                    $authtype = '<input type="hidden" name="login" value="fsys" />';
+                    $authtype = '<input type="radio" name="login" value="fsys" />';
                 }
             }
         }
@@ -3226,7 +3234,7 @@ sub aboutmewrapper {
     if (!defined($username)  && !defined($domain)) {
         return;
     }
-    return '<a href="/adm/'.$domain.'/'.$username.'/aboutme?forcestudent=1"'.
+    return '<a href="/adm/'.$domain.'/'.$username.'/aboutme"'.
 	($target?' target="'.$target.'"':'').($class?' class="'.$class.'"':'').' title="'.&mt("View this user's personal information page").'">'.$link.'</a>';
 }
 
@@ -4954,12 +4962,19 @@ Inputs:
 
 =item * $bgcolor, used to override the bgcolor on a webpage to a specific value
 
+=item * $no_inline_link, if true and in remote mode, don't show the
+         'Switch To Inline Menu' link
+
 =item * $args, optional argument valid values are
             no_auto_mt_title -> prevents &mt()ing the title arg
             inherit_jsmath -> when creating popup window in a page,
                               should it have jsmath forced on by the
                               current page
 
+=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.  
@@ -4971,7 +4986,7 @@ other decorations will be returned.
 
 sub bodytag {
     my ($title,$function,$addentries,$bodyonly,$domain,$forcereg,
-        $no_nav_bar,$bgcolor,$args)=@_;
+        $no_nav_bar,$bgcolor,$no_inline_link,$args,$advtoolsref)=@_;
 
     my $public;
     if ((($env{'user.name'} eq 'public') && ($env{'user.domain'} eq 'public'))
@@ -5047,11 +5062,25 @@ sub bodytag {
     $role = '<span class="LC_nobreak">('.$role.')</span>' if $role;
     &get_unprocessed_cgi($ENV{'QUERY_STRING'}, ['inhibitmenu']);
 
-        if ($no_nav_bar || $env{'form.inhibitmenu'} eq 'yes') { 
-            return $bodytag; 
-        } 
+    if ($no_nav_bar || $env{'form.inhibitmenu'} eq 'yes') { 
+        return $bodytag; 
+    }
 
-        if ($env{'request.state'} eq 'construct') { $forcereg=1; }
+    if ($env{'request.state'} eq 'construct') { $forcereg=1; }
+
+    my $funclist;
+    if (($env{'environment.remote'} eq 'on') && ($env{'request.state'} ne 'construct')) {
+        $bodytag .= Apache::lonhtmlcommon::scripttag(Apache::lonmenu::utilityfunctions(), 'start')."\n".
+                    Apache::lonmenu::serverform();
+        my $forbodytag;
+        &Apache::lonmenu::prepare_functions($env{'request.noversionuri'},
+                                            $forcereg,$args->{'group'},
+                                            $args->{'bread_crumbs'},
+                                            $advtoolsref,'',\$forbodytag);
+        unless (ref($args->{'bread_crumbs'}) eq 'ARRAY') {
+            $funclist = $forbodytag;
+        }
+    } else {
 
         #    if ($env{'request.state'} eq 'construct') {
         #        $titleinfo = &CSTR_pageheader(); #FIXME: Will be removed once all scripts have their own calls
@@ -5060,13 +5089,11 @@ sub bodytag {
 
 
         if ($env{'request.noversionuri'} =~ m{^/res/adm/pages/}) {
-            unless ($env{'request.noversionuri'} =~ m{/res/adm/pages/bookmarkmenu/}) {
-                if ($dc_info) {
-                     $dc_info = qq|<span class="LC_cusr_subheading">$dc_info</span>|;
-                }
-                $bodytag .= qq|<div id="LC_nav_bar">$name $role<br />
-                               <em>$realm</em> $dc_info</div>|;
+            if ($dc_info) {
+                 $dc_info = qq|<span class="LC_cusr_subheading">$dc_info</span>|;
             }
+            $bodytag .= qq|<div id="LC_nav_bar">$name $role<br />
+                           <em>$realm</em> $dc_info</div>|;
             return $bodytag;
         }
 
@@ -5093,7 +5120,17 @@ sub bodytag {
                 $bodytag .= &Apache::lonmenu::innerregister($forcereg,
                                 $args->{'bread_crumbs'});
             } elsif ($forcereg) { 
-                $bodytag .= &Apache::lonmenu::innerregister($forcereg);
+                $bodytag .= &Apache::lonmenu::innerregister($forcereg,undef,
+                                                            $args->{'group'});
+            } else {
+                my $forbodytag;
+                &Apache::lonmenu::prepare_functions($env{'request.noversionuri'},
+                                                    $forcereg,$args->{'group'},
+                                                    $args->{'bread_crumbs'},
+                                                    $advtoolsref,'',\$forbodytag);
+                unless (ref($args->{'bread_crumbs'}) eq 'ARRAY') {
+                    $bodytag .= $forbodytag;
+                }
             }
         }else{
             # this is to seperate menu from content when there's no secondary
@@ -5103,6 +5140,44 @@ sub bodytag {
         }
 
         return $bodytag;
+    }
+
+#
+# Top frame rendering, Remote is up
+#
+
+    my $imgsrc = $img;
+    if ($img =~ /^\/adm/) {
+        $imgsrc = &lonhttpdurl($img);
+    }
+    my $upperleft='<img src="'.$imgsrc.'" alt="'.$function.'" />';
+
+    # Explicit link to get inline menu
+    my $menu= ($no_inline_link?''
+               :'<a href="/adm/remote?action=collapse" target="_top">'.&mt('Switch to Inline Menu Mode').'</a>');
+
+    if ($dc_info) {
+        $dc_info = qq|<span class="LC_cusr_subheading">($dc_info)</span>|;
+    }
+
+    unless ($env{'form.inhibitmenu'}) {
+        $bodytag .= qq|<div id="LC_nav_bar">$name $role</div>
+                       <ol class="LC_primary_menu LC_right">
+                       <li>$menu</li>
+                       </ol><div id="LC_realm"> $realm $dc_info</div>|;
+    }
+    if ($env{'request.state'} eq 'construct') {
+        if (!$public){
+            if ($env{'request.state'} eq 'construct') {
+                $funclist = &Apache::lonhtmlcommon::scripttag(
+                                &Apache::lonmenu::utilityfunctions(), 'start').
+                            &Apache::lonhtmlcommon::scripttag('','end').
+                            &Apache::lonmenu::innerregister($forcereg,
+                                                            $args->{'bread_crumbs'});
+            }
+        }
+    }
+    return $bodytag."\n".$funclist;
 }
 
 sub dc_courseid_toggle {
@@ -5134,8 +5209,15 @@ sub make_attr_string {
 		delete($attr_ref->{$key});
 	    }
 	}
-	$attr_ref->{'onload'}  = $on_load;
-	$attr_ref->{'onunload'}= $on_unload;
+        if ($env{'environment.remote'} eq 'on') {
+            $attr_ref->{'onload'}  =
+                &Apache::lonmenu::loadevents().  $on_load;
+            $attr_ref->{'onunload'}=
+                &Apache::lonmenu::unloadevents().$on_unload;
+        } else {  
+	    $attr_ref->{'onload'}  = $on_load;
+	    $attr_ref->{'onunload'}= $on_unload;
+        }
     }
 
     my $attr_string;
@@ -5308,10 +5390,12 @@ form, .inline {
 
 .LC_error {
   color: red;
-  font-size: larger;
 }
 
-.LC_warning,
+.LC_warning {
+  color: darkorange;
+}
+
 .LC_diff_removed {
   color: red;
 }
@@ -5474,11 +5558,11 @@ td.LC_table_cell_checkbox {
   text-align: left;
 }
 
-.LC_head_subbox {
+.LC_head_subbox, .LC_actionbox {
   clear:both;
   background: #F8F8F8; /* $sidebg; */
   border: 1px solid $sidebg;
-  margin: 0 0 10px 0;      
+  margin: 0 0 10px 0;
   padding: 3px;
   text-align: left;
 }
@@ -6173,7 +6257,6 @@ div.LC_docs_entry_move {
 
 table.LC_data_table tr > td.LC_docs_entry_commands,
 table.LC_data_table tr > td.LC_docs_entry_parameter {
-  background: #DDDDDD;
   font-size: x-small;
 }
 
@@ -6546,7 +6629,7 @@ ol.LC_docs_parameters li.LC_docs_paramet
 }
 
 ul#LC_secondary_menu {
-  clear: both;
+  clear: right;
   color: $fontmenu;
   background: $tabbg;
   list-style: none;
@@ -7047,6 +7130,27 @@ ul.LC_funclist li {
 		cursor:pointer;
 }
 
+/*
+  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;}
+
 END
 }
 
@@ -7100,8 +7204,8 @@ sub headtag {
     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->{'force_register'}) {
+        $result .= &Apache::lonmenu::registerurl(1);
     }
     if (!$args->{'no_nav_bar'} 
 	&& !$args->{'only_body'}
@@ -7310,12 +7414,16 @@ $args - additional optional args support
              skip_phases    -> hash ref of 
                                     head -> skip the <html><head> generation
                                     body -> skip all <body> generation
+             no_inline_link -> if true and in remote mode, don't show the
+                                    'Switch To Inline Menu' link
              no_auto_mt_title -> prevent &mt()ing the title arg
              inherit_jsmath -> when creating popup window in a page,
                                     should it have jsmath forced on by the
                                     current page
              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
 
@@ -7328,7 +7436,7 @@ sub start_page {
     #&Apache::lonnet::logthis("start_page ".join(':',caller(0)));
 
     $env{'internal.start_page'}++;
-    my $result;
+    my ($result,@advtools);
 
     if (! exists($args->{'skip_phases'}{'head'}) ) {
         $result .= &xml_begin() . &headtag($title, $head_extra, $args);
@@ -7345,7 +7453,8 @@ sub start_page {
                          $args->{'function'},       $args->{'add_entries'},
                          $args->{'only_body'},      $args->{'domain'},
                          $args->{'force_register'}, $args->{'no_nav_bar'},
-                         $args->{'bgcolor'},        $args);
+                         $args->{'bgcolor'},        $args->{'no_inline_link'},
+                         $args,                     \@advtools);
         }
     }
 
@@ -7374,6 +7483,10 @@ sub start_page {
 				&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'})){
@@ -7381,6 +7494,11 @@ sub start_page {
 		}else{
 			$result .= &Apache::lonhtmlcommon::breadcrumbs();
 		}
+    } elsif (($env{'environment.remote'} eq 'on') &&
+             ($env{'form.inhibitmenu'} ne 'yes') &&
+             ($env{'request.noversionuri'} =~ m{^/res/}) &&
+             ($env{'request.noversionuri'} !~ m{^/res/adm/pages/})) {
+        $result .= '<div style="padding:0;margin:0;clear:both"><hr /></div>';
     }
     return $result;
 }
@@ -7769,7 +7887,7 @@ sub simple_error_page {
     my ($r,$title,$msg) = @_;
     my $page =
 	&Apache::loncommon::start_page($title).
-	&mt($msg).
+	'<p class="LC_error">'.&mt($msg).'</p>'.
 	&Apache::loncommon::end_page();
     if (ref($r)) {
 	$r->print($page);
@@ -8886,7 +9004,10 @@ sub user_rule_formats {
     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{$check} with the following format(s) may <span class=\"LC_cusr_emph\">only</span> be used for verified users at [_1]:",$domdesc).' <ul>';
+            $output = '<br />'.
+                      &mt($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})) {
@@ -11219,11 +11340,11 @@ sub process_extracted_files {
     if ($env{'form.folderpath'}) {
         my @items = split('&',$env{'form.folderpath'});
         $folders{'0'} = $items[-2];
-        $containers{'0'}='sequence';
-    } elsif ($env{'form.pagepath'}) {
-        my @items = split('&',$env{'form.pagepath'});
-        $folders{'0'} = $items[-2];
-        $containers{'0'}='page';
+        if ($env{'form.folderpath'} =~ /\:1$/) {
+            $containers{'0'}='page';
+        } else {
+            $containers{'0'}='sequence';
+        }
     }
     my @archdirs = &get_env_multiple('form.archive_directory');
     if ($numitems) {
@@ -11484,7 +11605,7 @@ sub cleanup_empty_dirs {
             my $numitems = 0;
             foreach my $item (@dircontents) {
                 if (-d "$path/$item") {
-                    &recurse_dirs("$path/$item");
+                    &cleanup_empty_dirs("$path/$item");
                     if (-e "$path/$item") {
                         $numitems ++;
                     }
@@ -13151,7 +13272,7 @@ sub commit_studentrole {
             $result = $modify_section_result;
         } elsif ($secchange == 1) {
             if ($oldsec eq '') {
-                $$logmsg .= &mt('Error when attempting to expire existing role without a section for [_1] in course [_3] -error: ',$uname,$cid).' '.$expire_role_result.$linefeed;
+                $$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;
             }
@@ -13177,6 +13298,26 @@ sub commit_studentrole {
     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>');
+    }
+}
+
 ############################################################
 ############################################################
 
@@ -13818,6 +13959,20 @@ sub init_user_environment {
                                                   \%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",
@@ -13969,6 +14124,32 @@ sub update_content_constraints {
     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) = @_;
 
@@ -13992,6 +14173,232 @@ sub parse_supplemental_title {
     return $title;
 }
 
+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).'&'.
+                             &Apache::lonhtmlcommon::entity_encode($thistitle).
+                             ':'.$res->randompick().
+                             ':'.$res->randomout().
+                             ':'.$res->encrypted().
+                             ':'.$res->randomorder().
+                             ':'.$res->is_page();
+                }
+            }
+        }
+        $path =~ s/^\&//;
+        my $maptitle = $mapresobj->title();
+        if ($mapurl eq 'default') {
+            $maptitle = 'Main Course Documents';
+        }
+        $path .= (($path ne '')? '&' : '').
+                 &Apache::lonhtmlcommon::entity_encode($mapurl).'&'.
+                 &Apache::lonhtmlcommon::entity_encode($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 Course Documents';
+        }
+        $path = &Apache::lonhtmlcommon::entity_encode($mapurl).'&'.
+                &Apache::lonhtmlcommon::entity_encode($maptitle).':::::'.$ispage;
+    }
+    unless ($mapurl eq 'default') {
+        $path = 'default&'.
+                &Apache::lonhtmlcommon::entity_encode('Main Course Documents').
+                ':::::&'.$path;
+    }
+    return $path;
+}
+
+sub captcha_display {
+    my ($context,$lonhost) = @_;
+    my ($output,$error);
+    my ($captcha,$pubkey,$privkey) = &get_captcha_config($context,$lonhost);
+    if ($captcha eq 'original') {
+        $output = &create_captcha();
+        unless ($output) {
+            $error = 'captcha';
+        }
+    } elsif ($captcha eq 'recaptcha') {
+        $output = &create_recaptcha($pubkey);
+        unless ($output) {
+            $error = 'recaptcha';
+        }
+    }
+    return ($output,$error);
+}
+
+sub captcha_response {
+    my ($context,$lonhost) = @_;
+    my ($captcha_chk,$captcha_error);
+    my ($captcha,$pubkey,$privkey) = &get_captcha_config($context,$lonhost);
+    if ($captcha eq 'original') {
+        ($captcha_chk,$captcha_error) = &check_captcha();
+    } elsif ($captcha eq 'recaptcha') {
+        $captcha_chk = &check_recaptcha($privkey);
+    } else {
+        $captcha_chk = 1;
+    }
+    return ($captcha_chk,$captcha_error);
+}
+
+sub get_captcha_config {
+    my ($context,$lonhost) = @_;
+    my ($captcha,$pubkey,$privkey,$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';
+                    } 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';
+            } else {
+                $captcha = 'original';
+            }
+        } elsif ($domconfhash{$serverhomedom.'.login.captcha'} eq 'original') {
+            $captcha = 'original';
+        }
+    }
+    return ($captcha,$pubkey,$privkey);
+}
+
+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="" /><br />'.
+                     '<img src="'.$captcha_params{'www_output_dir'}.'/'.$md5sum.'.png" />';
+            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,$md5sum);
+    my %captcha_hash = (
+                        0       => 'Code not checked (file error)',
+                       -1      => 'Failed: code expired',
+                       -2      => 'Failed: invalid code (not in database)',
+                       -3      => 'Failed: invalid code (code does not match crypt)',
+    );
+    if ($captcha_chk != 1) {
+        $captcha_error = $captcha_hash{$captcha_chk}
+    }
+    return ($captcha_chk,$captcha_error);
+}
+
+sub create_recaptcha {
+    my ($pubkey) = @_;
+    my $captcha = Captcha::reCAPTCHA->new;
+    return $captcha->get_options_setter({theme => 'white'})."\n".
+           $captcha->get_html($pubkey).
+           &mt('If either word is hard to read, [_1] will replace them.',
+               '<image src="/res/adm/pages/refresh.gif" alt="reCAPTCHA refresh" />').
+           '<br /><br />';
+}
+
+sub check_recaptcha {
+    my ($privkey) = @_;
+    my $captcha_chk;
+    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;
+}
+
 =pod
 
 =back