--- loncom/interface/loncommon.pm	2006/11/29 15:38:22	1.475
+++ loncom/interface/loncommon.pm	2007/03/20 15:36:14	1.516
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common routines
 #
-# $Id: loncommon.pm,v 1.475 2006/11/29 15:38:22 www Exp $
+# $Id: loncommon.pm,v 1.516 2007/03/20 15:36:14 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -59,13 +59,14 @@ use Apache::lonnet;
 use GDBM_File;
 use POSIX qw(strftime mktime);
 use Apache::lonmenu();
+use Apache::lonenc();
 use Apache::lonlocal;
 use HTML::Entities;
 use Apache::lonhtmlcommon();
 use Apache::loncoursedata();
 use Apache::lontexconvert();
 use Apache::lonclonecourse();
-use LONCAPA;
+use LONCAPA qw(:DEFAULT :match);
 
 my $readit;
 
@@ -157,7 +158,7 @@ BEGIN {
     opendir(DIR,$designdir);
     while ($filename=readdir(DIR)) {
 	if ($filename!~/\.tab$/) { next; }
-	my ($domain)=($filename=~/^(\w+)\./);
+	my ($domain)=($filename=~/^($match_domain)\./);
 	{
 	    my $designfile = $designdir.'/'.$filename;
 	    if ( open (my $fh,"<$designfile") ) {
@@ -515,8 +516,8 @@ function setSect(sectionlist) {
 
 sub selectcourse_link {
    my ($form,$unameele,$udomele,$desc,$extra_element,$multflag,$selecttype)=@_;
-    return "<a href='".'javascript:opencrsbrowser("'.$form.'","'.$unameele.
-        '","'.$udomele.'","'.$desc.'","'.$extra_element.'","'.$multflag.'","'.$selecttype.'");'."'>".&mt('Select [_1]',$selecttype)."</a>";
+   return "<a href='".'javascript:opencrsbrowser("'.$form.'","'.$unameele.
+        '","'.$udomele.'","'.$desc.'","'.$extra_element.'","'.$multflag.'","'.$selecttype.'");'."'>".&mt('Select Course')."</a>";
 }
 
 sub check_uncheck_jscript {
@@ -1264,37 +1265,13 @@ 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 my $dom (sort(values(%Apache::lonnet::hostdom))) {
-	push(@domains,$dom) unless $seen{$dom}++;
-    }
-    return @domains;
-}
-
 # ------------------------------------------
 
 sub domain_select {
     my ($name,$value,$multiple)=@_;
     my %domains=map { 
-	$_ => $_.' '.$Apache::lonnet::domaindescription{$_} 
-    } &get_domains;
+	$_ => $_.' '. &Apache::lonnet::domain($_,'description') 
+    } &Apache::lonnet::all_domains();
     if ($multiple) {
 	$domains{''}=&mt('Any domain');
 	return &multiple_select_form($name,$value,4,\%domains);
@@ -1314,11 +1291,11 @@ Returns a string containing a <select> e
 
 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 elments in
+  $order - (optional) array ref of the order to show the elements in
 
 =cut
 
@@ -1334,8 +1311,16 @@ sub multiple_select_form {
         }
     }
     $output.="\n<select name='$name' size='$size' multiple='1'>";
-    my @order = ref($order) ? @$order
-                            : sort(keys(%$hash));
+    my @order;
+    if (ref($order) eq 'ARRAY')  {
+        @order = @{$order};
+    } 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});
@@ -1381,17 +1366,18 @@ sub select_form {
 
 sub display_filter {
     if (!$env{'form.show'}) { $env{'form.show'}=10; }
+    if (!$env{'form.displayfilter'}) { $env{'form.displayfilter'}='currentfolder'; }
     return '<nobr><label>'.&mt('Records [_1]',
 			       &Apache::lonmeta::selectbox('show',$env{'form.show'},undef,
 							   (&mt('all'),10,20,50,100,1000,10000))).
-	   '</label></nobr> <nobr><label>'.
+	   '</label></nobr> <nobr>'.
            &mt('Filter [_1]',
-	   &select_form(($env{'form.displayfilter'}?$env{'form.displayfilter'}:'currentfolder'),
-					'displayfilter',
-					('currentfolder' => 'Current folder',
-					 'containing' => 'Containing phrase',
-					 'none' => 'None'))).
-	   '<input type="text" name="containingphrase" size="30" /></label></nobr>';
+	   &select_form($env{'form.displayfilter'},
+			'displayfilter',
+			('currentfolder' => 'Current folder/page',
+			 'containing' => 'Containing phrase',
+			 'none' => 'None'))).
+			 '<input type="text" name="containingphrase" size="30" value="'.&HTML::Entities::encode($env{'form.containingphrase'}).'" /></nobr>';
 }
 
 sub gradeleveldescription {
@@ -1449,7 +1435,7 @@ selected");
 #-------------------------------------------
 sub select_dom_form {
     my ($defdom,$name,$includeempty) = @_;
-    my @domains = get_domains();
+    my @domains = sort(&Apache::lonnet::all_domains());
     if ($includeempty) { @domains=('',@domains); }
     my $selectdomain = "<select name=\"$name\" size=\"1\">\n";
     foreach my $dom (@domains) {
@@ -1465,30 +1451,6 @@ sub select_dom_form {
 
 =pod
 
-=item * get_library_servers($domain)
-
-Returns a hash which contains keys like '103l3' and values like 
-'kirk.lite.msu.edu'.  All of the keys will be for machines in the
-given $domain.
-
-=cut
-
-#-------------------------------------------
-sub get_library_servers {
-    my $domain = shift;
-    my %library_servers;
-    foreach my $hostid (keys(%Apache::lonnet::libserv)) {
-        if ($Apache::lonnet::hostdom{$hostid} eq $domain) {
-            $library_servers{$hostid} = $Apache::lonnet::hostname{$hostid};
-        }
-    }
-    return %library_servers;
-}
-
-#-------------------------------------------
-
-=pod
-
 =item * home_server_option_list($domain)
 
 returns a string which contains an <option> list to be used in a 
@@ -1499,7 +1461,7 @@ returns a string which contains an <opti
 #-------------------------------------------
 sub home_server_option_list {
     my $domain = shift;
-    my %servers = &get_library_servers($domain);
+    my %servers = &Apache::lonnet::get_servers($domain,'library');
     my $result = '';
     foreach my $hostid (sort(keys(%servers))) {
         $result.=
@@ -1901,7 +1863,9 @@ If target_domain is not found in domain.
 #-------------------------------------------
 sub get_auth_defaults {
     my $domain=shift;
-    return ($Apache::lonnet::domain_auth_def{$domain},$Apache::lonnet::domain_auth_arg_def{$domain});
+    return (&Apache::lonnet::domain($domain,'auth_def'),
+	    &Apache::lonnet::domain($domain,'auth_arg_def'));
+	    
 }
 ###############################################################
 ##   End Get Authentication Defaults for Domain              ##
@@ -2257,6 +2221,19 @@ sub track_student_link {
 	&help_open_topic('View_recent_activity');
 }
 
+# ===================================================== 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
 
 =back
@@ -2472,19 +2449,21 @@ sub preferred_languages {
     if ($browser) {
 	@languages=(@languages,split(/\s*(\,|\;|\:)\s*/,$browser));
     }
-    if ($Apache::lonnet::domain_lang_def{$env{'user.domain'}}) {
+    if (&Apache::lonnet::domain($env{'user.domain'},'lang_def')) {
 	@languages=(@languages,
-		$Apache::lonnet::domain_lang_def{$env{'user.domain'}});
+		    &Apache::lonnet::domain($env{'user.domain'},
+					    'lang_def'));
     }
-    if ($Apache::lonnet::domain_lang_def{$env{'request.role.domain'}}) {
+    if (&Apache::lonnet::domain($env{'request.role.domain'},'lang_def')) {
 	@languages=(@languages,
-		$Apache::lonnet::domain_lang_def{$env{'request.role.domain'}});
+		    &Apache::lonnet::domain($env{'request.role.domain'},
+					    'lang_def'));
     }
-    if ($Apache::lonnet::domain_lang_def{
-	                          $Apache::lonnet::perlvar{'lonDefDomain'}}) {
+    if (&Apache::lonnet::domain($Apache::lonnet::perlvar{'lonDefDomain'},
+				'lang_def')) {
 	@languages=(@languages,
-		$Apache::lonnet::domain_lang_def{
-                                  $Apache::lonnet::perlvar{'lonDefDomain'}});
+		    &Apache::lonnet::domain($Apache::lonnet::perlvar{'lonDefDomain'},
+					    'lang_def'));
     }
 # turn "en-ca" into "en-ca,en"
     my @genlanguages;
@@ -2689,7 +2668,9 @@ sub get_student_answers {
   }
   $moreenv{'grade_target'}='answer';
   %moreenv=(%form,%moreenv);
-  my $userview=&Apache::lonnet::ssi('/res/'.$feedurl,%moreenv);
+  $feedurl = &Apache::lonnet::clutter($feedurl);
+  &Apache::lonenc::check_encrypt(\$feedurl);
+  my $userview=&Apache::lonnet::ssi($feedurl,%moreenv);
   return $userview;
 }
 
@@ -2803,30 +2784,77 @@ sub maketime {
 #########################################
 
 sub findallcourses {
-    my ($roles) = @_;
+    my ($roles,$uname,$udom) = @_;
     my %roles;
     if (ref($roles)) { %roles = map { $_ => 1 } @{$roles}; }
     my %courses;
     my $now=time;
-    foreach my $key (keys(%env)) {
-	if ( $key=~m{^user\.role\.(\w+)\./(\w+)/(\w+)/?(\w*)$} ||
-             $key=~m{^user\.role\.(cr/\w+/\w+/\w+)\./(\w+)/(\w+)}) {
-	    my ($role,$domain,$id,$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) {
-                if ($sec eq '') {
-                    $sec = 'none';
+    if (!defined($uname)) {
+        $uname = $env{'user.name'};
+    }
+    if (!defined($udom)) {
+        $udom = $env{'user.domain'};
+    }
+    if (($uname ne $env{'user.name'}) || ($udom ne $env{'user.domain'})) {
+        my %roleshash = &Apache::lonnet::dump('roles',$udom,$uname);
+        if (!%roles) {
+            %roles = (
+                       cc => 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,$role,$realsec);
+            (undef,$cdom,$cnumpart,$secpart) = split(/\//,$entry);
+            if ($secpart eq '') {
+                ($cnum,$role) = split(/_/,$cnumpart); 
+                $sec = 'none';
+                $realsec = '';
+            } else {
+                $cnum = $cnumpart;
+                ($sec,$role) = split(/_/,$secpart);
+                $realsec = $sec;
+            }
+            $courses{$cdom.'_'.$cnum}{$sec} = $trole.'/'.$cdom.'/'.$cnum.'/'.$realsec;
+        }
+    } 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) {
+                    if ($sec eq '') {
+                        $sec = 'none';
+                    }
+                    $courses{$cdom.'_'.$cnum}{$sec} = 
+                                     $role.'/'.$cdom.'/'.$cnum.'/'.$sec;
                 }
-                $courses{$domain.'_'.$id}{$sec} = 1;
             }
         }
     }
@@ -2836,52 +2864,170 @@ sub findallcourses {
 ###############################################
 
 sub blockcheck {
-    my ($setters,$activity) = @_;
-    # Retrieve active student roles and active course coordinator/instructor roles
+    my ($setters,$activity,$uname,$udom) = @_;
+
+    if (!defined($udom)) {
+        $udom = $env{'user.domain'};
+    }
+    if (!defined($uname)) {
+        $uname = $env{'user.name'};
+    }
 
-    my %live_courses = &findallcourses();
+    # If uname and udom are for a course, check for blocks in the course.
 
-    # Retrieve blocking times and identity of blocker for active courses
-    # unless user has 'evb' privilege.
+    if (&Apache::lonnet::is_course($udom,$uname)) {
+        my %records = &Apache::lonnet::dump('comm_block',$udom,$uname);
+        my ($startblock,$endblock)=&get_blocks($setters,$activity,$udom,$uname);
+        return ($startblock,$endblock);
+    }
 
     my $startblock = 0;
     my $endblock = 0;
+    my %live_courses = &findallcourses(undef,$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' ||
+         $activity eq 'groups') && ($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 = $env{'course.'.$course.'.domain'};
-        my $cnum = $env{'course.'.$course.'.num'};
-        my $noblock = 0;
+        my ($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) {
+            # 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 $role = 'cm./'.$cdom.'/'.$cnum;
+            my $checkrole = 'cm./'.$cdom.'/'.$cnum;
             if ($sec ne 'none') {
-                $role .= '/'.$sec;
+                $checkrole .= '/'.$sec;
             }
-            if (&Apache::lonnet::allowed('evb',undef,undef,$role)) {
-                $noblock = 1;
-                last;
+            if ($otheruser) {
+                # Resource belongs to user other than current user.
+                # Assemble privs for that user, and check for 'evb' priv.
+                my ($trole,$tdom,$tnum,$tsec);
+                my $entry = $live_courses{$course}{$sec};
+                if ($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,%allroles,%userroles);
+                $area = '/'.$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)) {
+                    $no_ownblock = 1;
+                    last;
+                }
             }
         }
         # if they have the evb priv and are currently not playing student
-        next if (($noblock) &&
-                 ($env{'request.role'} !~ m{^st\./$cdom/$cnum}));
+        next if (($no_ownblock) &&
+                 ($env{'request.role'} !~ m{^st\./\Q$cdom\E/\Q$cnum\E}));
+        next if ($no_userblock);
+
+        # Retrieve blocking times and identity of blocker for course
+        # of specified user, unless user has 'evb' privilege.
+        
+        my ($start,$end)=&get_blocks($setters,$activity,$cdom,$cnum);
+        if (($start != 0) && 
+            (($startblock == 0) || ($startblock > $start))) {
+            $startblock = $start;
+        }
+        if (($end != 0)  &&
+            (($endblock == 0) || ($endblock < $end))) {
+            $endblock = $end;
+        }
+    }
+    return ($startblock,$endblock);
+}
 
-        $setters->{$course} = {};
-        $setters->{$course}{'staff'} = [];
-        $setters->{$course}{'times'} = [];
-        my %records = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
-        foreach my $record (keys(%records)) {
-            my ($start,$end) = ($record =~ m/^(\d+)____(\d+)$/);
-            if ($start <= time && $end >= time) {
-                my ($staff_name,$staff_dom,$title,$blocks) =
-                    &parse_block_record($records{$record});
-                if ($blocks->{$activity} eq 'on') {
-                    push(@{$$setters{$course}{'staff'}}, [$staff_name,$staff_dom]);                    push(@{$$setters{$course}{'times'}}, [$start,$end]);
-                    if ( ($startblock == 0) || ($startblock > $1) ) {
-                        $startblock = $1;
-                    }
-                    if ( ($endblock == 0) || ($endblock < $2) ) {
-                        $endblock = $2;
-                    }
+sub get_blocks {
+    my ($setters,$activity,$cdom,$cnum) = @_;
+    my $startblock = 0;
+    my $endblock = 0;
+    my $course = $cdom.'_'.$cnum;
+    $setters->{$course} = {};
+    $setters->{$course}{'staff'} = [];
+    $setters->{$course}{'times'} = [];
+    my %records = &Apache::lonnet::dump('comm_block',$cdom,$cnum);
+    foreach my $record (keys(%records)) {
+        my ($start,$end) = ($record =~ m/^(\d+)____(\d+)$/);
+        if ($start <= time && $end >= time) {
+            my ($staff_name,$staff_dom,$title,$blocks) =
+                &parse_block_record($records{$record});
+            if ($blocks->{$activity} eq 'on') {
+                push(@{$$setters{$course}{'staff'}},[$staff_name,$staff_dom]);
+                push(@{$$setters{$course}{'times'}}, [$start,$end]);
+                if ( ($startblock == 0) || ($startblock > $start) ) {
+                    $startblock = $start;
+                }
+                if ( ($endblock == 0) || ($endblock < $end) ) {
+                    $endblock = $end;
                 }
             }
         }
@@ -2896,7 +3042,6 @@ sub parse_block_record {
         ($setuname,$setudom) = split(/:/,$record->{'setter'});
         $title = &unescape($record->{'event'});
         $blocks = $record->{'blocks'};
-
     } else {
         my @data = split(/:/,$record,3);
         if (scalar(@data) eq 2) {
@@ -2919,7 +3064,7 @@ sub build_block_table {
         'blse' => 'Block set by'
     );
     my $output;
-    $output = '<br /><br />'.$lt{'cacb'}.':<br /><br />';
+    $output = '<br />'.$lt{'cacb'}.':<br />';
     $output .= &start_data_table();
     $output .= '
 <tr>
@@ -2932,21 +3077,83 @@ sub build_block_table {
         my %courseinfo=&Apache::lonnet::coursedescription($course);
         for (my $i=0; $i<@{$$setters{$course}{staff}}; $i++) {
             my ($uname,$udom) = @{$$setters{$course}{staff}[$i]};
-            my $fullname = &Apache::loncommon::plainname($uname,$udom);
+            my $fullname = &plainname($uname,$udom);
+            if (defined($env{'user.name'}) && defined($env{'user.domain'})
+                && $env{'user.name'} ne 'public' 
+                && $env{'user.domain'} ne 'public') {
+                $fullname = &aboutmewrapper($fullname,$uname,$udom);
+            }
             my ($openblock,$closeblock) = @{$$setters{$course}{times}[$i]};
             $openblock = &Apache::lonlocal::locallocaltime($openblock);
             $closeblock= &Apache::lonlocal::locallocaltime($closeblock);
             $output .= &Apache::loncommon::start_data_table_row().
                        '<td>'.$courseinfo{'description'}.'</td>'.
                        '<td>'.$openblock.' to '.$closeblock.'</td>'.
-                       '<td>'.$fullname.' ('.$uname.':'.$udom.
-                       ')</td>'.
+                       '<td>'.$fullname.'</td>'.
                         &Apache::loncommon::end_data_table_row();
         }
     }
     $output .= &end_data_table();
 }
 
+sub blocking_status {
+    my ($activity,$uname,$udom) = @_;
+    my %setters;
+    my ($blocked,$output,$ownitem,$is_course);
+    my ($startblock,$endblock)=&blockcheck(\%setters,$activity,$uname,$udom);
+    if ($startblock && $endblock) {
+        $blocked = 1;
+        if (wantarray) {
+            my $category;
+            if ($activity eq 'boards') {
+                $category = 'Discussion posts in this course';
+            } elsif ($activity eq 'blogs') {
+                $category = 'Blogs';
+            } elsif ($activity eq 'port') {
+                if (defined($uname) && defined($udom)) {
+                    if ($uname eq $env{'user.name'} &&
+                        $udom eq $env{'user.domain'}) {
+                        $ownitem = 1;
+                    }
+                }
+                $is_course = &Apache::lonnet::is_course($udom,$uname);
+                if ($ownitem) { 
+                    $category = 'Your portfolio files';  
+                } elsif ($is_course) {
+                    my $coursedesc;
+                    foreach my $course (keys(%setters)) {
+                        my %courseinfo =
+                             &Apache::lonnet::coursedescription($course);
+                        $coursedesc = $courseinfo{'description'};
+                    }
+                    $category = "Group files in the course '$coursedesc'";
+                } else {
+                    $category = 'Portfolio files belonging to ';
+                    if ($env{'user.name'} eq 'public' && 
+                        $env{'user.domain'} eq 'public') {
+                        $category .= &plainname($uname,$udom);
+                    } else {
+                        $category .= &aboutmewrapper(&plainname($uname,$udom),$uname,$udom);  
+                    }
+                }
+            } elsif ($activity eq 'groups') {
+                $category = 'Groups in this course';
+            }
+            my $showstart = &Apache::lonlocal::locallocaltime($startblock);
+            my $showend = &Apache::lonlocal::locallocaltime($endblock);
+            $output = '<br />'.&mt('[_1] will be inaccessible between [_2] and [_3] because communication is being blocked.',$category,$showstart,$showend).'<br />';
+            if (!($activity eq 'port' && !($ownitem) && !($is_course))) { 
+                $output .= &build_block_table($startblock,$endblock,\%setters);
+            }
+        }
+    }
+    if (wantarray) {
+        return ($blocked,$output);
+    } else {
+        return $blocked;
+    }
+}
+
 ###############################################
 
 =pod
@@ -2995,8 +3202,8 @@ sub domainlogo {
     if (-e '/home/httpd/html/adm/lonDomLogos/'.$domain.'.gif') {
 	my $logo=&lonhttpdurl("/adm/lonDomLogos/$domain.gif");
         return '<img src="'.$logo.'" alt="'.$domain.'" />';
-    } elsif(exists($Apache::lonnet::domaindescription{$domain})) {
-        return $Apache::lonnet::domaindescription{$domain};
+    } elsif (defined(&Apache::lonnet::domain($domain,'description'))) {
+        return &Apache::lonnet::domain($domain,'description');
     } else {
         return '';
     }
@@ -3119,8 +3326,8 @@ sub bodytag {
  # role and realm
     my ($role,$realm) = split(/\./,$env{'request.role'},2);
     if ($role  eq 'ca') {
-        my ($rdom,$rname) = ($realm =~ m-^/(\w+)/(\w+)$-);
-        $realm = &plainname($rname,$rdom).':'.$rdom;
+        my ($rdom,$rname) = ($realm =~ m{^/($match_domain)/($match_username)$});
+        $realm = &plainname($rname,$rdom);
     } 
 # realm
     if ($env{'request.course.id'}) {
@@ -3416,6 +3623,7 @@ sub standard_css {
     my $mail_other           = '#99BBBB';
     my $mail_other_hover     = '#669999';
     my $table_header         = '#DDDDDD';
+    my $feedback_link_bg     = '#BBBBBB';
 
     my $border = ($env{'browser.type'} eq 'explorer') ? '0px 2px 0px 2px'
 	                                              : '0px 3px 0px 4px';
@@ -3423,9 +3631,20 @@ sub standard_css {
     return <<END;
 h1, h2, h3, th { font-family: $sans }
 a:focus { color: red; background: yellow } 
-table.thinborder { border-collapse: collapse; }
-table.thinborder tr th {  border-style: solid; border-width: 1px; background: $tabbg;}
-table.thinborder tr td { border-style: solid; border-width: 1px}
+table.thinborder,
+table.LC_optres_prior {
+  border-collapse: collapse;
+}
+table.thinborder tr th {
+  border-style: solid;
+  border-width: 1px;
+  background: $tabbg;
+}
+table.thinborder tr td, 
+table.LC_optres_prior tr td {
+  border-style: solid;
+  border-width: 1px
+}
 
 form, .inline { display: inline; }
 .center { text-align: center; }
@@ -3597,6 +3816,18 @@ table.LC_data_table, table.LC_mail_list
 .LC_data_table_dense {
   font-size: small;
 }
+table.LC_nested_outer {
+  border: 1px solid #000000;
+  border-collapse: separate;
+  border-spacing: 0px;
+  width: 100%;
+}
+table.LC_nested {
+  border: 0px;
+  border-collapse: separate;
+  border-spacing: 0px;
+  width: 100%;
+}
 table.LC_data_table tr th, table.LC_calendar tr th, table.LC_mail_list tr th {
   font-weight: bold;
   background-color: $data_table_head;
@@ -3615,38 +3846,50 @@ table.LC_data_table tr.LC_data_table_hig
   background-color: $data_table_darker;
 }
 table.LC_data_table tr.LC_empty_row td,
-table.LC_whatsnew tr.LC_empty_row td {
+table.LC_nested tr.LC_empty_row td {
   background-color: #FFFFFF;
   font-weight: bold;
   font-style: italic;
   text-align: center;
   padding: 8px;
 }
-table.LC_whatsnew tr.LC_empty_row td {
+table.LC_nested tr.LC_empty_row td {
   padding: 4ex
 }
-
-
-table.LC_whatsnew {
+table.LC_nested_outer tr th {
+  font-weight: bold;
+  background-color: $data_table_head;
+  font-size: smaller;
+  border-bottom: 1px solid #000000;
 }
-
-table.LC_whatsnew tr th,
-table.LC_whatsnew tr.LC_info_row td {
-  background-color: #CCC;
+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_whatsnew tr td {
-  background-color: #FFF;
+table.LC_nested tr.LC_info_row td {
+  background-color: #CCC;
+  font-weight: bold;
   font-size: small;
-  text-align: right;
+  text-align: center;
 }
-table.LC_whatsnew tr td.LC_first_item {
+table.LC_nested tr.LC_info_row td.LC_left_item {
   text-align: left;
 }
+table.LC_nested td {
+  background-color: #FFF;
+  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_whatsnew tr.LC_odd_row td {
+table.LC_nested tr.LC_odd_row td {
   background-color: #EEE;
 }
 
@@ -3705,6 +3948,11 @@ table.LC_mail_list tr.LC_mail_other {
 table.LC_mail_list tr.LC_mail_other:hover {
   background-color: $mail_other_hover;
 }
+table.LC_mail_list tr.LC_mail_even {
+}
+table.LC_mail_list tr.LC_mail_odd {
+}
+
 
 table#LC_portfolio_actions {
   width: auto;
@@ -3949,6 +4197,35 @@ table.LC_descriptive_input td.LC_descrip
   text-align: right;
   font-weight: bold;
 }
+table.LC_feedback_link {
+    background: $feedback_link_bg;
+}
+span.LC_feedback_link {
+    background: $feedback_link_bg;
+    font-size: larger;
+}
+
+table.LC_prior_tries {
+    border-width: 1px;
+    border-style: solid;
+    border-color: gray;
+    border-collapse: collapse;
+}
+table.LC_prior_tries th,
+table.LC_prior_tries td {
+    border-width: 1px;
+    border-style: solid;
+    border-color: gray;
+    padding: 3px;
+}
+table.LC_prior_tries tr.LC_correct {
+    font-weight: bold;
+    background: #aaffaa;
+}
+span.LC_prior_numerical {
+    font-family: monospace;
+    white-space: pre;
+}
 
 END
 }
@@ -4241,6 +4518,11 @@ Inputs:         $args - additional optio
                                  a html attribute
                  frameset     -> if true will start with a <frameset>
                                  rather than <body>
+                 dicsussion   -> if true will get discussion from
+                                  lonxml::xmlend
+                                 (you can pass the target and parser arguments
+                                  through optional 'target' and 'parser' args
+                                  to this routine)
 
 =cut
 
@@ -4699,7 +4981,7 @@ sub get_course_users {
                     $usec = 'none';
                 }
                 if ($uname ne '' && $udom ne '') {
-                    if ($end < $now) {
+                    if ($end > 0 && $end < $now) {
                         $status = 'previous';
                     } elsif ($start > $now) {
                         $status = 'future';
@@ -5139,7 +5421,12 @@ sub record_sep {
             $i++;
         }
     } else {
-        my @allfields=split(/\,/,$record);
+        my @allfields;
+        if ($env{'form.upfiletype'} eq 'semisv') {
+            @allfields=split(/;/,$record,-1);
+        } else {
+            @allfields=split(/\,/,$record,-1);
+        }
         my $i=0;
         my $j;
         for ($j=0;$j<=$#allfields;$j++) {
@@ -5177,6 +5464,7 @@ the file type.
 sub upfile_select_html {
     my %Types = (
                  csv   => &mt('CSV (comma separated values, spreadsheet)'),
+                 semisv => &mt('Semicolon separated values'),
                  space => &mt('Space separated'),
                  tab   => &mt('Tabulator separated'),
 #                 xml   => &mt('HTML/XML'),
@@ -5831,16 +6119,19 @@ Returns: both routines return nothing
 #######################################################
 #######################################################
 sub store_course_settings {
+    return &store_settings($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 $uname = $env{'user.name'};
-    my ($prefix,$Settings) = @_;
+    my ($context,$prefix,$Settings) = @_;
     my %SaveHash;
     my %AppHash;
     while (my ($setting,$type) = each(%$Settings)) {
-        my $basename = join('.','internal',$courseid,$prefix,$setting);
+        my $basename = join('.','internal',$context,$prefix,$setting);
         my $envname = 'environment.'.$basename;
         if (exists($env{'form.'.$setting})) {
             # Save this value away
@@ -5880,11 +6171,14 @@ sub store_course_settings {
 }
 
 sub restore_course_settings {
-    my $courseid = $env{'request.course.id'};
-    my ($prefix,$Settings) = @_;
+    return &restore_settings($env{'request.course.id'},@_);
+}
+
+sub restore_settings {
+    my ($context,$prefix,$Settings) = @_;
     while (my ($setting,$type) = each(%$Settings)) {
         next if (exists($env{'form.'.$setting}));
-        my $envname = 'environment.internal.'.$courseid.'.'.$prefix.
+        my $envname = 'environment.internal.'.$context.'.'.$prefix.
             '.'.$setting;
         if (exists($env{$envname})) {
             if ($type eq 'scalar') {
@@ -6016,7 +6310,7 @@ sub construct_course {
 #
 # Check if created correctly
 #
-    ($$crsudom,$$crsunum)=($$courseid=~/^\/(\w+)\/(\w+)$/);
+    ($$crsudom,$$crsunum)= &LONCAPA::split_courseid($$courseid);
     my $crsuhome=&Apache::lonnet::homeserver($$crsunum,$$crsudom);
     $outcome .= &mt('Created on').': '.$crsuhome.'<br>';
 #
@@ -6025,7 +6319,7 @@ sub construct_course {
     my $cloneid='';
     if (($args->{'clonecourse'}) && ($args->{'clonedomain'})) {
 	$cloneid='/'.$args->{'clonedomain'}.'/'.$args->{'clonecourse'};
-        my ($clonecrsudom,$clonecrsunum)=($cloneid=~/^\/(\w+)\/(\w+)$/);
+        my ($clonecrsudom,$clonecrsunum)= &LONCAPA::split_courseid($cloneid);
 	my $clonehome=&Apache::lonnet::homeserver($clonecrsunum,$clonecrsudom);
 	if ($clonehome eq 'no_host') {
 	    $outcome .=
@@ -6198,9 +6492,11 @@ sub construct_course {
 # if specified, key authority is not course, but user
 # only active if keyaccess is yes
     if ($args->{'keyauth'}) {
-	$args->{'keyauth'}=~s/[^\w\@]//g;
-	if ($args->{'keyauth'}) {
-	    $cenv{'keyauth'}=$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;
 	}
     }
 
@@ -6297,7 +6593,7 @@ sub group_term {
 
 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')) {