--- loncom/auth/lonroles.pm	2010/01/18 16:48:21	1.240.2.12
+++ loncom/auth/lonroles.pm	2010/09/02 17:08:28	1.256.2.4
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # User Roles Screen
 #
-# $Id: lonroles.pm,v 1.240.2.12 2010/01/18 16:48:21 raeburn Exp $
+# $Id: lonroles.pm,v 1.256.2.4 2010/09/02 17:08:28 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -138,12 +138,11 @@ use Apache::lonannounce;
 use Apache::lonlocal;
 use Apache::lonpageflip();
 use Apache::lonnavdisplay();
-use Apache::lonmainmenu();
 use Apache::loncoursequeueadmin;
 use GDBM_File;
 use LONCAPA qw(:DEFAULT :match);
 use HTML::Entities;
- 
+
 
 sub redirect_user {
     my ($r,$title,$url,$msg,$launch_nav) = @_;
@@ -154,10 +153,10 @@ sub redirect_user {
     my $swinfo=&Apache::lonmenu::rawconfig();
     my $navwindow;
     if ($launch_nav eq 'on') {
-	$navwindow.=&Apache::lonnavdisplay::launch_win('now',undef,undef,
-						       ($url =~ m-^/adm/whatsnew-));
+        $navwindow.=&Apache::lonnavdisplay::launch_win('now',undef,undef,
+                                                       ($url =~ m-^/adm/whatsnew-));
     } else {
-	$navwindow.=&Apache::lonnavmaps::close();
+        $navwindow.=&Apache::lonnavmaps::close();
     }
 
     # Breadcrumbs
@@ -166,7 +165,6 @@ sub redirect_user {
     my $start_page = &Apache::loncommon::start_page('Switching Role',undef,
                                                     {'redirect' => [1,$url],
                                                      'bread_crumbs' => $brcrum,});
-    &Apache::lonhtmlcommon::clear_breadcrumbs();
     my $end_page   = &Apache::loncommon::end_page();
 
 # Note to style police: 
@@ -227,7 +225,7 @@ sub handler {
     my %dcroles = ();
     my $numdc = &check_fordc(\%dcroles,$then);
     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
-    my $custommenu = &Apache::loncommon::needs_gci_custom();
+    my $loncaparev = $Apache::lonnet::perlvar{'lonVersion'};
 
 # ================================================================== Roles Init
     if ($env{'form.selectrole'}) {
@@ -241,7 +239,16 @@ sub handler {
 	if ($env{'request.course.id'}) {
             # Check if user is CC trying to select a course role
             if ($env{'form.switchrole'}) {
-                if (!defined($env{'user.role.'.$env{'form.switchrole'}})) {
+                my $switch_is_active;
+                if (defined($env{'user.role.'.$env{'form.switchrole'}})) {
+                    my ($start,$end) = split(/\./,$env{'user.role.'.$env{'form.switchrole'}});
+                    if (!$end || $end > $now) {
+                        if (!$start || $start < $refresh) {
+                            $switch_is_active = 1;
+                        }
+                    }
+                }
+                unless ($switch_is_active) {
                     &adhoc_course_role($refresh,$then);
                 }
             }
@@ -277,7 +284,7 @@ sub handler {
                         my ($server_status,$home) = &check_author_homeserver($user,$domain);
                         if ($server_status eq 'switchserver') {
                             my $trolecode = 'au./'.$domain.'/';
-                            my $switchserver = '/adm/switchserver?otherserver='.$home.'&role='.$trolecode;
+                            my $switchserver = '/adm/switchserver?otherserver='.$home.'&amp;role='.$trolecode;
                             $r->internal_redirect($switchserver);
                         }
                         last;
@@ -288,7 +295,7 @@ sub handler {
                             my ($server_status,$home) = &check_author_homeserver($user,$domain);
                             if ($server_status eq 'switchserver') {
                                 my $trolecode = 'ca./'.$domain.'/'.$user;
-                                my $switchserver = '/adm/switchserver?otherserver='.$home.'&role='.$trolecode;
+                                my $switchserver = '/adm/switchserver?otherserver='.$home.'&amp;role='.$trolecode;
                                 $r->internal_redirect($switchserver);
                             }
                             last;
@@ -309,7 +316,7 @@ sub handler {
                             if ($server_status eq 'switchserver') {
                                 my $trolecode = 'ca./'.$domain.'/'.$user; 
                                 my $switchserver = '/adm/switchserver?'
-                                                  .'otherserver='.$home.'&role='.$trolecode;
+                                                  .'otherserver='.$home.'&amp;role='.$trolecode;
                                 $r->internal_redirect($switchserver);
                             }
                         } else {
@@ -322,9 +329,7 @@ sub handler {
                 }
             }
         }
-        if (($env{'form.cm'}) && ($env{'form.orgurl'})) { 
-            $r->internal_redirect($env{'form.orgurl'});
-        }
+
         foreach $envkey (keys %env) {
             next if ($envkey!~/^user\.role\./);
             my ($where,$trolecode,$role,$tstatus,$tend,$tstart);
@@ -334,6 +339,42 @@ sub handler {
 		if ($tstatus eq 'is') {
 		    $where=~s/^\///;
 		    my ($cdom,$cnum,$csec)=split(/\//,$where);
+                    if (($cnum) && ($role ne 'ca') && ($role ne 'aa')) {
+                        my $home = $env{'course.'.$cdom.'_'.$cnum.'.home'};
+                        my @ids = &Apache::lonnet::current_machine_ids();
+                        unless ($loncaparev eq '' && $home && grep(/^\Q$home\E$/,@ids)) {
+                            my %curr_reqd_hash = &Apache::lonnet::userenvironment($cdom,$cnum,'internal.releaserequired');
+                            if ($curr_reqd_hash{'internal.releaserequired'} ne '') {
+                                my ($switchserver,$switchwarning) =
+                                    &check_release_required($loncaparev,$cdom.'_'.$cnum,$trolecode,$curr_reqd_hash{'internal.releaserequired'});
+                                if ($switchwarning ne '' || $switchserver ne '') {
+                                    &Apache::loncommon::content_type($r,'text/html');
+                                    &Apache::loncommon::no_cache($r);
+                                    $r->send_http_header;
+                                    my $end_page=&Apache::loncommon::end_page();
+                                    $r->print(&Apache::loncommon::start_page('Selected course unavailable on this server').
+                                              '<p class="LC_warning">');
+                                    if ($switchwarning) {
+                                        $r->print($switchwarning.'<br /><a href="/adm/roles">');
+                                        if (&Apache::loncommon::show_course()) {
+                                            $r->print(&mt('Display courses'));
+                                        } else {
+                                            $r->print(&mt('Display roles'));
+                                        }
+                                        $r->print('</a>');
+                                    } elsif ($switchserver) {
+				        $r->print(&mt('This course requires a newer version of LON-CAPA than is installed on this server.').
+                                                  '<br />'.
+                                                  '<a href="/adm/switchserver?'.$switchserver.'">'.
+                                                  &mt('Switch Server').
+                                                  '</a>');
+                                    }
+                                    $r->print('</p>'.&Apache::loncommon::end_page());
+                                    return OK;
+                                }
+                            }
+                        }
+                    }
 # check for course groups
                     my %coursegroups = &Apache::lonnet::get_active_groups(
                           $env{'user.domain'},$env{'user.name'},$cdom, $cnum);
@@ -451,8 +492,6 @@ ENDENTERKEY
 
 		    if (($cnum) && ($role ne 'ca') && ($role ne 'aa')) {
                         my $msg;
-                        if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
-                        &Apache::lonnet::appenv({'request.role.adv'=>$tadv});
 			my ($furl,$ferr)=
 			    &Apache::lonuserstate::readmap($cdom.'/'.$cnum);
 			if (($env{'form.orgurl'}) && 
@@ -466,9 +505,17 @@ ENDENTERKEY
                                 }
                                 $dest .= 'symb='.$env{'form.symb'};
                             }
+			    if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
+			    &Apache::lonnet::appenv({'request.role.adv'=>$tadv});
                             if (($ferr) && ($tadv)) {
 				&error_page($r,$ferr,$dest);
 			    } else {
+                                if ($dest =~ m{^/adm/coursedocs\?folderpath}) {
+                                    if ($env{'request.course.id'} eq $cdom.'_'.$cnum) { 
+                                        my $chome = &Apache::lonnet::homeserver($cnum,$cdom);
+                                        &update_content_constraints($cdom,$cnum,$chome,$cdom.'_'.$cnum);
+                                    }
+                                }
 				$r->internal_redirect($dest);
 			    }
 			    return OK;
@@ -484,6 +531,8 @@ ENDENTERKEY
                     .'<p>'.&mt('Please try again.').'</p>'
                     .'<p>'.$ferr.'</p>';
 			    }
+			    if (&Apache::lonnet::allowed('adv') eq 'F') { $tadv=1; }
+			    &Apache::lonnet::appenv({'request.role.adv'=>$tadv});
 
 			    if (($ferr) && ($tadv)) {
 				&error_page($r,$ferr,$furl);
@@ -495,7 +544,7 @@ ENDENTERKEY
 				    $courseid = substr($courseid, 1);
 				}
 				$courseid =~ s/\//_/;
-				if (($cdom ne 'gcitest') && (($role eq 'cc') || ($role eq 'co')) 
+				if ((($role eq 'cc') || ($role eq 'co')) 
                                     && ($env{'course.' . $courseid .'.course.helper.not.run'})) { 
 				    $furl = "/adm/helper/course.initialization.helper";
 				    # Send the user to the course they selected
@@ -506,10 +555,10 @@ ENDENTERKEY
                                             my $esc_symb = &HTML::Entities::encode($env{'form.destsymb'},'"<>&');
                                             $dest .= '?symb='.$esc_symb;
                                         }
-                                        &redirect_user($r,&mt('Entering [_1]',
-                                                      $env{'course.'.$courseid.'.description'}),
-                                               $dest,$msg,
-                                               $env{'environment.remotenavmap'});
+                                        &redirect_user($r, &mt('Entering [_1]',
+                                                       $env{'course.'.$courseid.'.description'}),
+                                                       $dest, $msg,
+                                                       $env{'environment.remotenavmap'});
                                         return OK;
                                     }
 				    if (&Apache::lonnet::allowed('whn',
@@ -519,12 +568,12 @@ ENDENTERKEY
 								    .$env{'request.course.sec'})
 					) {
 					my $startpage = &courseloadpage($courseid);
-					unless (($startpage eq 'firstres') || ($cdom eq 'gcitest')) {
+					unless ($startpage eq 'firstres') {         
 					    $msg = &mt('Entering [_1] ...',
 						       $env{'course.'.$courseid.'.description'});
-					    &redirect_user($r,&mt('New in course'),
-							   '/adm/whatsnew?refpage=start',$msg,
-							   $env{'environment.remotenavmap'});
+                                            &redirect_user($r,&mt('New in course'),
+                                                           '/adm/whatsnew?refpage=start',$msg,
+                                                           $env{'environment.remotenavmap'});
 					    return OK;
 					}
 				    }
@@ -534,15 +583,12 @@ ENDENTERKEY
 # Guess not ...
 				    $furl=&Apache::lonpageflip::first_accessible_resource();
 				}
-                                if (($cdom eq 'gcitest') && ($custommenu)) {
-                                    $furl = '/adm/navmaps';
-                                }
                                 $msg = &mt('Entering [_1] ...',
 					   $env{'course.'.$courseid.'.description'});
-				&redirect_user($r,&mt('Entering [_1]',
-						      $env{'course.'.$courseid.'.description'}),
-					       $furl,$msg,
-					       $env{'environment.remotenavmap'});
+                                &redirect_user($r,&mt('Entering [_1]',
+                                                      $env{'course.'.$courseid.'.description'}),
+                                               $furl,$msg,
+                                               $env{'environment.remotenavmap'});
 			    }
 			    return OK;
 			}
@@ -579,6 +625,7 @@ ENDENTERKEY
         }
     }
 
+
 # =============================================================== No Roles Init
 
     &Apache::loncommon::content_type($r,'text/html');
@@ -586,34 +633,23 @@ ENDENTERKEY
     $r->send_http_header;
     return OK if $r->header_only;
 
-    my ($crumbtext,$pagetitle,$recent,$show_course);
+    my $crumbtext = 'User Roles';
+    my $pagetitle = 'My Roles';
+    my $recent = &mt('Recent Roles');
+    my $show_course=&Apache::loncommon::show_course();
+    if ($show_course) {
+        $crumbtext = 'Courses';
+        $pagetitle = 'My Courses';
+        $recent = &mt('Recent Courses');
+    }
+    my $brcrum =[{href=>"/adm/roles",text=>$crumbtext}];
+    my $swinfo=&Apache::lonmenu::rawconfig();
+    my $start_page=&Apache::loncommon::start_page($pagetitle,undef,{bread_crumbs=>$brcrum});
+    my $standby=&mt('Role selected. Please stand by.');
+    $standby=~s/\n/\\n/g;
     my $noscript='<span class="LC_error">'.&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.').'<br />'.&mt('As this is not the case, most functionality in the system will be unavailable.').'</span><br />';
-    if ($custommenu) {
-        my $start_page = &Apache::loncommon::start_page('Main Menu',undef,
-                                                        {'bread_crumbs' => 1});
-        $r->print(<<"ENDCUSTOM");
-$start_page
-<br />
-<noscript>
-$noscript
-</noscript>
-ENDCUSTOM
-    } else {
-        $crumbtext = 'User Roles';
-        $pagetitle = 'My Roles';
-        $recent = &mt('Recent Roles');
-        $show_course=&Apache::loncommon::show_course();
-        if ($show_course) {
-            $crumbtext = 'Courses';
-            $pagetitle = 'My Courses';
-            $recent = &mt('Recent Courses');
-        }
-        my $brcrum =[{href=>"/adm/roles",text=>$crumbtext}];
-        my $swinfo=&Apache::lonmenu::rawconfig();
-        my $start_page=&Apache::loncommon::start_page($pagetitle,undef,{bread_crumbs=>$brcrum});
-        my $standby=&mt('Role selected. Please stand by.');
-        $standby=~s/\n/\\n/g;
-        $r->print(<<ENDHEADER);
+
+    $r->print(<<ENDHEADER);
 $start_page
 <br />
 <noscript>
@@ -640,7 +676,6 @@ function enterrole (thisform,rolecode,bu
 // ]]>
 </script>
 ENDHEADER
-    }
 
 # ------------------------------------------ Get Error Message from Environment
 
@@ -708,63 +743,20 @@ ENDHEADER
         if (($ENV{'REDIRECT_QUERY_STRING'}) && ($fn)) {
     	    $fn.='?'.$ENV{'REDIRECT_QUERY_STRING'};
         }
-        unless ($custommenu) {
-            $r->print('<form method="post" name="rolechoice" action="'.(($fn)?$fn:$r->uri).'">');
-            $r->print('<input type="hidden" name="orgurl" value="'.$fn.'" />');
-            $r->print('<input type="hidden" name="selectrole" value="1" />');
-            $r->print('<input type="hidden" name="newrole" value="" />');
-        }
+        $r->print('<form method="post" name="rolechoice" action="'.(($fn)?$fn:$r->uri).'">');
+        $r->print('<input type="hidden" name="orgurl" value="'.$fn.'" />');
+        $r->print('<input type="hidden" name="selectrole" value="1" />');
+        $r->print('<input type="hidden" name="newrole" value="" />');
     }
+    $r->rflush();
 
     my (%roletext,%sortrole,%roleclass,%futureroles,%timezones);
     my ($countactive,$countfuture,$inrole,$possiblerole) = 
         &gather_roles($then,$refresh,$now,$reinit,$nochoose,\%roletext,\%sortrole,\%roleclass,
-                      \%futureroles,\%timezones);
+                      \%futureroles,\%timezones,$loncaparev);
 
     $refresh = $now;
     &Apache::lonnet::appenv({'user.refresh.time'  => $refresh});
-    if (!$countactive && !$countfuture) {
-        if (&Apache::loncommon::new_roles_update()) {
-            ($countactive,$countfuture,$inrole,$possiblerole) =
-                &gather_roles($then,$refresh,$now,$reinit,$nochoose,\%roletext,\%sortrole,
-                              \%roleclass,\%futureroles,\%timezones);
-        }
-    }
-    if ($custommenu) {
-        if ($env{'form.destinationurl'} eq '/adm/gci_info') {
-            $r->print(&gci_info_page()).
-            &Apache::loncommon::end_page();
-            return OK;
-        }
-        my %courses = &Apache::loncommon::existing_gcitest_courses('cc');
-        $env{'browser.interface'}='faketextual';
-        $env{'environment.remote'}='off';
-        my $numcourses = keys(%courses);
-        my $switcher;
-        if ($numcourses > 0) {
-            $switcher = &Apache::lonmainmenu::gcitest_switcher('cc',%courses);
-            my $current;
-            if ($env{'request.course.id'}) {
-                $current = 'cc./'.$env{'course.'.$env{'request.course.id'}.'.domain'}.
-                           '/'.$env{'course.'.$env{'request.course.id'}.'.num'};
-            }
-            my $switcher_js = &Apache::lonmainmenu::gcitest_switcher_js($current,$numcourses);
-            $r->print(<<"ENDSCRIPT");
-<script type="text/javascript">
-// <![CDATA[
-$switcher_js
-// ]]>
-</script>
-ENDSCRIPT
-        }
-        $r->print(&Apache::lonmenu::inlinemenu('gcicustom',$switcher).
-                  &Apache::loncommon::end_page());
-        return OK;
-    } else {
-        if ($env{'form.destinationurl'} eq '/adm/gci_info') {
-            delete($env{'form.destinationurl'});
-        }
-    }
     if ($env{'user.adv'}) {
         $r->print('<p><label><input type="checkbox" name="showall"');
         if ($env{'form.showall'}) { $r->print(' checked="checked" '); }
@@ -776,21 +768,19 @@ ENDSCRIPT
             $r->print(&Apache::loncoursequeueadmin::queued_selfenrollment());
             my $domdesc = &Apache::lonnet::domain($env{'user.domain'},'description');
             my $esc_dom = &HTML::Entities::encode($env{'user.domain'},'"<>&'); 
-            unless ($env{'user.domain'} eq 'gcitest') {
-                $r->print(
-                    '<p>'
-                   .&mt('[_1]Visit the [_2]Course/Community Catalog[_3]'
-                       .' to view all [_4] LON-CAPA courses and communities.'
-                       ,'<b>'
-                       ,'<a href="/adm/coursecatalog?showdom='.$esc_dom.'">'
-                       ,'</a></b>',$domdesc)
-                   .'<br />'
-                   .&mt('If a course or community is [_1]not[_2] in your list of current courses and communities below,'
+            $r->print(
+                '<p>'
+               .&mt('[_1]Visit the [_2]Course/Community Catalog[_3]'
+                   .' to view all [_4] LON-CAPA courses and communities.'
+                   ,'<b>'
+                   ,'<a href="/adm/coursecatalog?showdom='.$esc_dom.'">'
+                   ,'</a></b>',$domdesc)
+               .'<br />'
+               .&mt('If a course or community is [_1]not[_2] in your list of current courses and communities below,'
                    .' you may be able to enroll if self-enrollment is permitted.'
                    ,'<b>','</b>')
-                   .'</p>'
-                );
-            }
+               .'</p>'
+            );
         }
     }
 
@@ -801,10 +791,8 @@ ENDSCRIPT
 	} else {
 	    $r->print('<h2>'.&mt('Currently no active roles, courses or communities').'</h2>');
 	}
-        unless ($env{'user.domain'} eq 'gcitest') {
-            &findcourse_advice($r);
-            &requestcourse_advice($r);
-        }
+        &findcourse_advice($r);
+        &requestcourse_advice($r); 
 	$r->print('</form>');
         if ($countfuture) {
             $r->print(&mt('The following [quant,_1,role,roles] will become active in the future:',$countfuture));
@@ -833,29 +821,15 @@ ENDSCRIPT
         }
         $r->print(&Apache::loncommon::end_page());
 	return OK;
-    } elsif ($countactive==1) { # Is there only one choice?
-        my $needs_switchserver;
-        if ($env{'user.author'}) {
-            $needs_switchserver = &check_needs_switchserver($possiblerole);
-        }
-        if ((!$needs_switchserver) && ($env{'request.role'} eq 'cm')) {
-            $r->print('<h3>'.&mt('Please stand by.').'</h3>'.
-                '<input type="hidden" name="'.$possiblerole.'" value="1" />'.
-            '<noscript><br /><input type="submit" name="submit" value="'.&mt('Continue').'" /></noscript>');
-            $r->print("</form>\n");
-            $r->rflush();
-            $r->print('<script type="text/javascript">document.forms.rolechoice.submit();</script>');
-            $r->print(&Apache::loncommon::end_page());
-            return OK;
-        }
-        if ($needs_switchserver) {
-            $r->print("<h2>".&mt('Server Switch Required')."</h2>\n".
-                      &mt('Construction Space access is only available from '.
-                          'the home server of the corresponding Author.').'<br />'.
-                      &mt("Click the 'Switch Server' link to go there.").'<br />');
-        }
     }
 # ----------------------------------------------------------------------- Table
+
+    if ($numdc > 0) {
+        $r->print(&coursepick_jscript());
+        $r->print(&Apache::loncommon::coursebrowser_javascript().
+                  &Apache::loncommon::authorbrowser_javascript());
+    }
+
     unless ((!&Apache::loncommon::show_course()) || ($nochoose) || ($countactive==1)) {
 	$r->print("<h2>".&mt('Select a Course to Enter')."</h2>\n");
     }
@@ -867,28 +841,41 @@ ENDSCRIPT
                       $env{'form.destsymb'}.'" />');
         }
     }
+
     my $doheaders = &roletable_headers($r,\%roleclass,\%sortrole,$nochoose);
     if ($env{'environment.recentroles'}) {
         my %recent_roles =
                &Apache::lonhtmlcommon::get_recent('roles',$env{'environment.recentrolesn'});
 	my $output='';
-	foreach (sort(keys(%recent_roles))) {
-	    if (ref($roletext{'user.role.'.$_}) eq 'ARRAY') {
+	foreach my $role (sort(keys(%recent_roles))) {
+	    if (ref($roletext{'user.role.'.$role}) eq 'ARRAY') {
 		$output.= &Apache::loncommon::start_data_table_row().
-                          $roletext{'user.role.'.$_}->[0].
-                          &Apache::loncommon::end_data_table_row().
-                          &Apache::loncommon::continue_data_table_row().
-                          $roletext{'user.role.'.$_}->[1].
+                          $roletext{'user.role.'.$role}->[0].
                           &Apache::loncommon::end_data_table_row();
-                if ($_ =~ m-dc\./($match_domain)/- 
+                if ($roletext{'user.role.'.$role}->[1] ne '') {
+                    $output .= &Apache::loncommon::continue_data_table_row().
+                               $roletext{'user.role.'.$role}->[1].
+                               &Apache::loncommon::end_data_table_row();
+                }
+                if ($role =~ m{dc\./($match_domain)/} 
 		    && $dcroles{$1}) {
 		    $output .= &adhoc_roles_row($1,'recent');
                 }
 	    } elsif ($numdc > 0) {
-                unless ($_ =~/^error\:/) {
-                    $output.=&display_cc_role('user.role.'.$_);
+                unless ($role =~/^error\:/) {
+                    my ($roletext,$role_text_end) = &display_cc_role('user.role.'.$role);
+                    if ($roletext) {
+                        $output.= &Apache::loncommon::start_data_table_row().
+                                  $roletext.
+                                  &Apache::loncommon::end_data_table_row();
+                        if ($role_text_end) {
+                            $output .= &Apache::loncommon::continue_data_table_row().
+                                       $role_text_end.
+                                       &Apache::loncommon::end_data_table_row();
+                        }
+                    }
                 }
-            } 
+            }
 	}
 	if ($output) {
 	    $r->print(&Apache::loncommon::start_data_table_empty_row()
@@ -901,12 +888,6 @@ ENDSCRIPT
             $doheaders ++;
 	}
     }
-
-    if ($numdc > 0) {
-        $r->print(&coursepick_jscript());
-        $r->print(&Apache::loncommon::coursebrowser_javascript().
-                  &Apache::loncommon::authorbrowser_javascript());
-    }
     &print_rolerows($r,$doheaders,\%roleclass,\%sortrole,\%dcroles,\%roletext);
     if ($countactive > 1) {
         my $tremark='';
@@ -957,47 +938,25 @@ ENDSCRIPT
     return OK;
 }
 
-sub gci_info_page {
-    return <<"END";
-<h2>Welcome to the Geoscience Concept Inventory WebCenter</h2>
-<p>
-Use the tabs to navigate the WebCenter and...
-<ul>
-<li>Review and comment on existing GCI questions</li>
-<li>Submit a GCI question of your own</li>
-<li>Create an online test for your students</li>
-</ul>
-</p>
-<p>For more information about writing and reviewing Concept Inventory questions
-please refer to the <a href="/res/gci/gci/internal/pdfs/GCIWorkbook.pdf">GCI Workbook</a>.
-
-END
-}
-
 sub gather_roles {
-    my ($then,$refresh,$now,$reinit,$nochoose,$roletext,$sortrole,$roleclass,$futureroles,$timezones) = @_;
+    my ($then,$refresh,$now,$reinit,$nochoose,$roletext,$sortrole,$roleclass,$futureroles,$timezones,$loncaparev) = @_;
     my ($countactive,$countfuture,$inrole,$possiblerole) = (0,0,0,'');
     my $advanced = $env{'user.adv'};
     my $tryagain = $env{'form.tryagain'};
+    my @ids = &Apache::lonnet::current_machine_ids();
     foreach my $envkey (sort(keys(%env))) {
         my $button = 1;
         my $switchserver='';
+        my $switchwarning;
         my ($role_text,$role_text_end,$sortkey);
         if ($envkey=~/^user\.role\./) {
             my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus,$tpstart,$tpend);
             &Apache::lonnet::role_status($envkey,$then,$refresh,$now,\$role,\$where,
                                          \$trolecode,\$tstatus,\$tstart,\$tend);
             next if (!defined($role) || $role eq '' || $role =~ /^gr/);
-            my $timezone = &role_timezone($where,$timezones);
             $tremark='';
             $tpstart='&nbsp;';
             $tpend='&nbsp;';
-            if ($tstart) {
-                $tpstart=&Apache::lonlocal::locallocaltime($tstart,$timezone);
-            }
-            if ($tend) {
-                $tpend=&Apache::lonlocal::locallocaltime($tend,$timezone);
-            }
             if ($env{'request.role'} eq $trolecode) {
                 $tstatus='selected';
             }
@@ -1006,6 +965,13 @@ sub gather_roles {
                 || ($tstatus eq 'selected')
                 || ($tstatus eq 'future')
                 || ($env{'form.showall'})) {
+                my $timezone = &role_timezone($where,$timezones);
+                if ($tstart) {
+                    $tpstart=&Apache::lonlocal::locallocaltime($tstart,$timezone);
+                }
+                if ($tend) {
+                    $tpend=&Apache::lonlocal::locallocaltime($tend,$timezone);
+                }
                 if ($tstatus eq 'is') {
                     $tbg='LC_roles_is';
                     $possiblerole=$trolecode;
@@ -1031,7 +997,7 @@ sub gather_roles {
                 if ($role =~ /^cr\//) {
                     my ($rdummy,$rdomain,$rauthor,$rrole)=split(/\//,$role);
                     if ($tremark) { $tremark.='<br />'; }
-                    $tremark.=&mt('Defined by [_1] at [_2].',$rauthor,$rdomain);
+                    $tremark.=&mt('Customrole defined by [_1].',$rauthor.':'.$rdomain);
                 }
                 $trole=Apache::lonnet::plaintext($role);
                 my $ttype;
@@ -1042,11 +1008,10 @@ sub gather_roles {
                 if (($role eq 'ca') || ($role eq 'aa')) {
                     my $home = &Apache::lonnet::homeserver($trest,$tdom);
                     my $allowed=0;
-                    my @ids=&Apache::lonnet::current_machine_ids();
                     foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
                     if (!$allowed) {
                         $button=0;
-                        $switchserver='otherserver='.$home.'&role='.$trolecode;
+                        $switchserver='otherserver='.$home.'&amp;role='.$trolecode;
                     }
                     #next if ($home eq 'no_host');
                     $home = &Apache::lonnet::hostname($home);
@@ -1062,11 +1027,10 @@ sub gather_roles {
                     my $home = &Apache::lonnet::homeserver
                         ($env{'user.name'},$env{'user.domain'});
                     my $allowed=0;
-                    my @ids=&Apache::lonnet::current_machine_ids();
                     foreach my $id (@ids) { if ($id eq $home) { $allowed=1; } }
                     if (!$allowed) {
                         $button=0;
-                        $switchserver='otherserver='.$home.'&role='.$trolecode;
+                        $switchserver='otherserver='.$home.'&amp;role='.$trolecode;
                     }
                     #next if ($home eq 'no_host');
                     $home = &Apache::lonnet::hostname($home);
@@ -1079,26 +1043,49 @@ sub gather_roles {
                 } elsif ($trest) {
                     my $tcourseid=$tdom.'_'.$trest;
                     $ttype = &Apache::loncommon::course_type($tcourseid);
-                    $trole = &Apache::lonnet::plaintext($role,$ttype,$tcourseid));
+                    $trole = &Apache::lonnet::plaintext($role,$ttype,$tcourseid);
                     if ($env{'course.'.$tcourseid.'.description'}) {
+                        my $home=$env{'course.'.$tcourseid.'.home'};
                         $twhere=$env{'course.'.$tcourseid.'.description'};
                         $sortkey=$role."\0".$tdom."\0".$twhere."\0".$envkey;
+                        $twhere = &HTML::Entities::encode($twhere,'"<>&');
                         unless ($twhere eq &mt('Currently not available')) {
                             $twhere.=' <span class="LC_fontsize_small">'.
         &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom).
                                     '</span>';
+                            unless ($home && grep(/^\Q$home\E$/,@ids) && $loncaparev eq '') {
+                                my $required = $env{'course.'.$tcourseid.'.internal.releaserequired'};
+                                if ($required ne '') {
+                                    ($switchserver,$switchwarning) = 
+                                        &check_release_required($loncaparev,$tcourseid,$trolecode,$required);
+                                    if ($switchserver || $switchwarning) {
+                                        $button = 0;
+                                    }
+                                }
+                            }
                         }
                     } else {
                         my %newhash=&Apache::lonnet::coursedescription($tcourseid);
                         if (%newhash) {
                             $sortkey=$role."\0".$tdom."\0".$newhash{'description'}.
                                 "\0".$envkey;
-                            $twhere=$newhash{'description'}.
-                              ' <span class="LC_fontsize_small">'.
-        &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom).
-                              '</span>';
+                            $twhere=&HTML::Entities::encode($newhash{'description'},'"<>&').
+                                    ' <span class="LC_fontsize_small">'.
+                                     &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom).
+                                    '</span>';
                             $ttype = $newhash{'type'};
                             $trole = &Apache::lonnet::plaintext($role,$ttype,$tcourseid);
+                            my $home = $newhash{'home'};
+                            unless ($home && grep(/^\Q$home\E$/,@ids) && $loncaparev eq '') {
+                                my $required = $newhash{'internal.releaserequired'};
+                                if ($required ne '') {
+                                    ($switchserver,$switchwarning) =
+                                        &check_release_required($loncaparev,$tcourseid,$trolecode,$required);
+                                    if ($switchserver || $switchwarning) {
+                                        $button = 0;
+                                    }
+                                }
+                            }
                         } else {
                             $twhere=&mt('Currently not available');
                             $env{'course.'.$tcourseid.'.description'}=$twhere;
@@ -1122,7 +1109,7 @@ sub gather_roles {
                 ($role_text,$role_text_end) =
                     &build_roletext($trolecode,$tdom,$trest,$tstatus,$tryagain,
                                     $advanced,$tremark,$tbg,$trole,$twhere,$tpstart,
-                                    $tpend,$nochoose,$button,$switchserver,$reinit);
+                                    $tpend,$nochoose,$button,$switchserver,$reinit,$switchwarning);
                 $roletext->{$envkey}=[$role_text,$role_text_end];
                 if (!$sortkey) {$sortkey=$twhere."\0".$envkey;}
                 $sortrole->{$sortkey}=$envkey;
@@ -1142,9 +1129,15 @@ sub role_timezone {
             my $cnum = $2;
             if ($cdom && $cnum) {
                 if (!exists($timezones->{$cdom.'_'.$cnum})) {
-                    my %timehash =
-                        &Apache::lonnet::get('environment',['timezone'],$cdom,$cnum);
-                    if ($timehash{'timezone'} eq '') {
+                    my $tz;
+                    if ($env{'course.'.$cdom.'_'.$cnum.'.description'}) {
+                        $tz = $env{'course.'.$cdom.'_'.$cnum.'.timezone'};
+                    } else {
+                        my %timehash =
+                            &Apache::lonnet::get('environment',['timezone'],$cdom,$cnum);
+                        $tz = $timehash{'timezone'};
+                    }
+                    if ($tz eq '') {
                         if (!exists($timezones->{$cdom})) {
                             my %domdefaults = 
                                 &Apache::lonnet::get_domain_defaults($cdom);
@@ -1157,7 +1150,7 @@ sub role_timezone {
                         $timezones->{$cdom.'_'.$cnum} = $timezones->{$cdom};
                     } else {
                         $timezones->{$cdom.'_'.$cnum} = 
-                            &Apache::lonlocal::gettimezone($timehash{'timezone'});
+                            &Apache::lonlocal::gettimezone($tz);
                     }
                 }
                 $timezone = $timezones->{$cdom.'_'.$cnum};
@@ -1230,10 +1223,12 @@ sub print_rolerows {
                         if (ref($roletext->{$sortrole->{$which}}) eq 'ARRAY') {
                             $output.= &Apache::loncommon::start_data_table_row().
                                       $roletext->{$sortrole->{$which}}->[0].
-                                      &Apache::loncommon::end_data_table_row().
-                                      &Apache::loncommon::continue_data_table_row().
-                                      $roletext->{$sortrole->{$which}}->[1].
                                       &Apache::loncommon::end_data_table_row();
+                            if ($roletext->{$sortrole->{$which}}->[1] ne '') {
+                                $output .= &Apache::loncommon::continue_data_table_row().
+                                           $roletext->{$sortrole->{$which}}->[1].
+                                           &Apache::loncommon::end_data_table_row();
+                            }
                         }
                         if ($sortrole->{$which} =~ m-dc\./($match_domain)/-) {
                             if (ref($dcroles) eq 'HASH') {
@@ -1336,49 +1331,6 @@ sub requestcourse_advice {
     return;
 }
 
-sub queued_selfenrollment {
-    my ($r) = @_;
-    my %selfenrollrequests = &Apache::lonnet::dump('selfenrollrequests');
-    my %reqs_by_date;
-    foreach my $item (keys(%selfenrollrequests)) {
-        if (ref($selfenrollrequests{$item}) eq 'HASH') {
-            if ($selfenrollrequests{$item}{'status'} eq 'request') {
-                if ($selfenrollrequests{$item}{'timestamp'}) {
-                    push(@{$reqs_by_date{$selfenrollrequests{$item}{'timestamp'}}},$item);
-                }
-            } 
-        }
-    }
-    if (keys(%reqs_by_date)) {
-        my $rolename = &Apache::lonnet::plaintext('st');
-        $r->print('<b>'.&mt('Enrollment requests pending Course Coordinator approval').'</b><br />'.
-                  &Apache::loncommon::start_data_table().
-                  &Apache::loncommon::start_data_table_header_row().
-                  '<th>'.&mt('Date requested').'</th><th>'.&mt('Course title').'</th>'.
-                  '<th>'.&mt('User role').'</th><th>'.&mt('Section').'</th>'.
-                 &Apache::loncommon::end_data_table_header_row());
-        my @sorted = sort { $a <=> $b } (keys(%reqs_by_date));
-        foreach my $item (@sorted) {
-            if (ref($reqs_by_date{$item}) eq 'ARRAY') {
-                foreach my $crs (@{$reqs_by_date{$item}}) {
-                    my %courseinfo = &Apache::lonnet::coursedescription($crs);
-                    my $usec = $selfenrollrequests{$crs}{'section'};
-                    if ($usec eq '') {
-                        $usec = &mt('No section'); 
-                    }
-                    $r->print(&Apache::loncommon::start_data_table_row().
-                             '<td>'.&Apache::lonlocal::locallocaltime($item).'</td>'.
-                             '<td>'.$courseinfo{'description'}.'</td>'.
-                             '<td>'.$rolename.'</td><td>'.$usec.'</td>'.
-                             &Apache::loncommon::end_data_table_row());
-                }
-            }
-        }
-        $r->print(&Apache::loncommon::end_data_table());
-    }
-    return;
-}
-
 sub privileges_info {
     my ($which) = @_;
     my $output;
@@ -1435,7 +1387,7 @@ sub privileges_info {
 }
 
 sub build_roletext {
-    my ($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$trole,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver,$reinit) = @_;
+    my ($trolecode,$tdom,$trest,$tstatus,$tryagain,$advanced,$tremark,$tbg,$trole,$twhere,$tpstart,$tpend,$nochoose,$button,$switchserver,$reinit,$switchwarning) = @_;
     my ($roletext,$roletext_end);
     my $is_dc=($trolecode =~ m/^dc\./);
     my $rowspan=($is_dc) ? ''
@@ -1453,6 +1405,13 @@ sub build_roletext {
             } else {
                 $roletext.=('<td'.$rowspan.' class="'.$tbg.'">&nbsp;</td>');
             }
+            if ($switchwarning) {
+                if ($tremark eq '') {
+                    $tremark = $switchwarning;
+                } else {
+                    $tremark .= '<br />'.$switchwarning;
+                }
+            }
         } elsif ($tstatus eq 'is') {
             $roletext.='<td'.$rowspan.' class="'.$tbg.'">'.
                         '<input name="'.$buttonname.'" type="button" value="'.
@@ -1633,6 +1592,95 @@ sub check_forcc {
     return $is_cc;
 }
 
+sub check_release_required {
+    my ($loncaparev,$tcourseid,$trolecode,$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'});
+                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 = $env{'course.'.$tcourseid.'.domain'};
+                    if ($cdom ne $env{'user.domain'}) {
+                        my ($coursedomserver,$coursehostname) = &Apache::lonnet::choose_server($cdom); 
+                        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.'.$tcourseid.'.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.'.$tcourseid.'.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='.$trolecode;
+            }
+        }
+    }
+    return ($switchserver,$warning);
+}
+
+sub update_content_constraints {
+    my ($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 courselink {
     my ($dcdom,$rowtype) = @_;
     my $courseform=&Apache::loncommon::selectcourse_link
@@ -1703,8 +1751,10 @@ sub display_cc_role {
     unless ($rolekey =~/^error\:/) {
         if ($rolekey =~ m{^user\.role\.(cc|co)\./($match_domain)/($match_courseid)$}) {
             my $ccrole = $1;
-            my $tcourseid = $2.'_'.$3;
-            my $trolecode = $1.'./'.$2.'/'.$3;
+            my $tdom = $2;
+            my $trest = $3;
+            my $tcourseid = $tdom.'_'.$trest;
+            my $trolecode = $ccrole.'./'.$tdom.'/'.$trest;
             my $twhere;
             my $ttype;
             my $tbg='LC_roles_is';
@@ -1712,7 +1762,7 @@ sub display_cc_role {
             if (%newhash) {
                 $twhere=$newhash{'description'}.
                         ' <span style="LC_fontsize_small">'.
-                        &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$2,$1).
+                        &Apache::loncommon::syllabuswrapper(&mt('Syllabus'),$trest,$tdom).
                         '</span>';
                 $ttype = $newhash{'type'};
             } else {
@@ -1720,8 +1770,8 @@ sub display_cc_role {
                 $env{'course.'.$tcourseid.'.description'}=$twhere;
             }
             my $trole = &Apache::lonnet::plaintext($ccrole,$ttype,$tcourseid);
-            $twhere.="<br />".&mt('Domain').":".$1;
-            ($roletext,$roletext_end) = &build_roletext($trolecode,$1,$2,'is',$tryagain,$advanced,'',$tbg,$trole,$twhere,'','','',1,'');
+            $twhere.="<br />".&mt('Domain').":".$tdom;
+            ($roletext,$roletext_end) = &build_roletext($trolecode,$tdom,$trest,'is',$tryagain,$advanced,'',$tbg,$trole,$twhere,'','','',1,'');
         }
     }
     return ($roletext,$roletext_end);
@@ -1739,7 +1789,7 @@ sub adhoc_roles_row {
     my $carole = &Apache::lonnet::plaintext('ca');
     my $selectcalink = &coauthorlink($dcdom,$rowtype);
     $output.=$ccrole.': '.$selectcclink
-            .' | '.$carole.': '.$selectcalink
+            .' | '.$carole.': '.$selectcalink.'</td>'
             .&Apache::loncommon::end_data_table_row();
     return $output;
 }
@@ -1798,7 +1848,7 @@ handler determines via C<lonnet>'s C<&al
 action is not allowed, C<lonroles> is used as error handler. This
 allows the user to select another role which may have permission to do
 what they were trying to do. C<lonroles> can also be accessed via the
-B<CRS> button in the Remote Control. 
+B<CRS> button in the Remote Control.
 
 =begin latex