--- loncom/interface/lonsyllabus.pm	2013/05/10 17:49:11	1.122
+++ loncom/interface/lonsyllabus.pm	2025/03/16 21:04:09	1.157
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Syllabus
 #
-# $Id: lonsyllabus.pm,v 1.122 2013/05/10 17:49:11 raeburn Exp $
+# $Id: lonsyllabus.pm,v 1.157 2025/03/16 21:04:09 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -35,10 +35,12 @@ use Apache::loncommon;
 use Apache::lonnet;
 use Apache::lontexconvert;
 use Apache::lonfeedback;
+use Apache::lonhtmlgateway;
 use Apache::lonannounce;
 use Apache::lonlocal;
 use Apache::lonhtmlcommon;
 use Apache::lonspeller();
+use Apache::lonwrapper();
 use HTML::Entities();
 
 sub handler {
@@ -53,7 +55,7 @@ sub handler {
 # ------------------------------------------------------------ Get query string
     &Apache::loncommon::get_unprocessed_cgi
                         ($ENV{'QUERY_STRING'},['register','forceedit','todocs',
-                                               'folderpath','title']);
+                                               'folderpath','title','only_body']);
 # ----------------------------------------------------- Is this even a course?
     my $homeserver=&Apache::lonnet::homeserver($cnum,$cdom);
     if ($homeserver eq 'no_host') {
@@ -71,12 +73,7 @@ sub handler {
     }
 # ------------------------------------- There is such a course, get environment
     my %courseenv=&Apache::lonnet::dump('environment',$cdom,$cnum);
-
-# ------------------------------------------------------------ Print the screen
-
-    if ($target eq 'tex') {
-        $r->print(&Apache::lonprintout::print_latex_header($env{'form.latex_type'}));
-    }
+    my $crstype = &Apache::loncommon::course_type();
 
 # --------------------------------------------------------------- Force Student
     my ($forceedit,$forcestudent);
@@ -102,8 +99,8 @@ sub handler {
     my $uploaded=$courseenv{'uploadedsyllabus'};
     my $minimal=$courseenv{'minimalsyllabus'};
 
-    if (($minimal =~/\w/) || ($uploaded =~/\w/)) { 
-        my $item;
+    if (($minimal =~/\w/) || ($uploaded =~/\w/)) {
+        my ($item,$is_pdf);
         if ($minimal =~/\w/) {
             if ($external =~ m{\Q$minimal\E$}) {
                 undef($external);
@@ -114,27 +111,62 @@ sub handler {
                 undef($external);
             }
             $item = $uploaded;
+            if ($item =~ /\.pdf$/i) {
+                $is_pdf = 1;
+            }
         }
         unless ($allowed && $forceedit) {
             my $file=&Apache::lonnet::filelocation("",$item);
-            if ($file =~ /\.(sty|css|js|txt|tex|html?)$/) {  
-                my $filetype;
-                if ($file =~ /\.(sty|css|js|txt|tex)$/) {
-                    $filetype=$1;
-                } else {
-                    $filetype='html';
-                }
-                my $result = '';
+            if ($file =~ /\.(tex|x?html?)$/) {
+                my $filetype = $1;
                 my $filecontents=&Apache::lonnet::getfile($file);
                 if ($filecontents eq -1) {
                     $r->print(&mt('Syllabus file unavailable'));
-                } elsif ($filetype eq 'html') {
+                } elsif ($filetype eq 'tex') {
+                    if ($target eq 'tex') {
+                        $r->print($filecontents);
+                    } else {
+                        my $texengine = $env{'form.texengine'};
+                        if ($texengine eq '') {
+                            $texengine = 'tth';
+                        } elsif (lc($texengine) eq 'jsmath') {
+                            $texengine = 'MathJax';
+                        }
+                        my $result = &Apache::lontexconvert::converted(\$filecontents,$texengine);
+                        my %args;
+                        &get_breadcrumbs($cdom,$cnum,$crstype,\%args);
+                        if ($env{'form.only_body'}) {
+                            $args{'only_body'} = 1;
+                        }
+                        if ($env{'request.use_absolute'}) {
+                            $args{'use_absolute'} = $env{'request.use_absolute'};
+                        }
+                        $r->print(&Apache::loncommon::start_page("Syllabus",undef,\%args).
+                                  $result.
+                                  &Apache::loncommon::end_page());
+                    }
+                } else {
                     my %mystyle;
+                    unless ($target eq 'tex') {
+                        $target = 'web';
+                    }
                     &Apache::structuretags::reset_problem_globals();
                     my $oldfile = $env{'request.filename'};
                     $env{'request.filename'} = $item;
-                    $result = &Apache::lonxml::xmlparse($r,'web',$filecontents,
-                                                        '',%mystyle);
+                    my $oldinhibit;
+                    if ($env{'form.only_body'}) {
+                        $oldinhibit = $env{'form.inhibitmenu'};
+                        $env{'form.inhibitmenu'} = 'yes';
+                    }
+                    my $result = &Apache::lonxml::xmlparse($r,$target,$filecontents,
+                                                           '',%mystyle);
+                    if ($env{'form.only_body'}) {
+                        if ($oldinhibit ne '') {
+                            $env{'form.inhibitmenu'} = $oldinhibit;
+                        } else {
+                            delete($env{'form.inhibitmenu'});
+                        }
+                    }
                     &Apache::structuretags::reset_problem_globals();
                     &Apache::lonhomework::finished_parsing();
                     $env{'request.filename'} = $oldfile;
@@ -142,18 +174,72 @@ sub handler {
                     $r->print($result);
                 }
             } else {
-                $r->print(&Apache::lonwrapper::wrapper($item));
+                if ($target eq 'tex') {
+                    $r->print(&Apache::lonprintout::print_latex_header($env{'form.latex_type'}).
+                              ' \strut \\\\ \textbf{'.&mt('Syllabus').'} \strut \\\\ '.
+                              &mt('Unsupported file type.').' \strut \\\\ '.
+                              &mt('Print the syllabus directly from your web browser').
+                              '\end{document}');
+                } else {
+                    my $brcrum;
+                    if ($env{'form.folderpath'} =~ /^supplemental/) {
+                        &Apache::loncommon::validate_folderpath(1,'',$cnum,$cdom);
+                        my $title = $env{'form.title'};
+                        if ($title eq '') {
+                            $title = &mt('Syllabus');
+                        }
+                        $brcrum =
+                            &Apache::lonhtmlcommon::docs_breadcrumbs(undef,$crstype,undef,$title,1);
+                    }
+                    $r->print(&Apache::lonwrapper::wrapper($r,$item,$brcrum,$env{'request.use_absolute'},
+                                                           undef,$is_pdf,undef,'','',&mt('Syllabus')));
+                }
             }
             return OK;
         }
     } elsif ($external=~/\w/) {
         unless ($allowed && $forceedit) {
-            $r->print(&Apache::lonwrapper::wrapper($external));
+            if (($env{'user.name'} eq 'public') && ($env{'user.domain'} eq 'public') &&
+                ($ENV{'SERVER_PORT'} == 443) && ($external =~ m{^http://}) && !($env{'form.usehttp'})) {
+                my $hostname = $r->hostname();
+                unless ((&Apache::lonnet::uses_sts()) || (&Apache::lonnet::waf_allssl($hostname))) {
+                    &redirect_to_http($r);
+                    return OK;
+                }
+            }
+            if ($target eq 'tex') {
+                $r->print(&Apache::lonprintout::print_latex_header($env{'form.latex_type'}).
+                         ' \strut \\\\ \textbf{'.&mt('Syllabus').'} \strut \\\\ '.$external.' '.
+                         ' \strut \\\\ '.&mt('Print the syllabus directly from your web browser').
+                         '\end{document}');
+            } else {
+                my $is_ext = 1;
+                my ($is_pdf,$brcrum);
+                if ($external =~ /\.pdf$/i) {
+                    $is_pdf = 1;
+                }
+                if ($env{'form.folderpath'} =~ /^supplemental/) {
+                    &Apache::loncommon::validate_folderpath(1,'',$cnum,$cdom);
+                    my $title = $env{'form.title'};
+                    if ($title eq '') {
+                        $title = &mt('Syllabus');
+                    }
+                    $title = &HTML::Entities::encode($title,'\'"<>&');
+                    $brcrum =
+                        &Apache::lonhtmlcommon::docs_breadcrumbs(undef,$crstype,undef,$title,1);
+                }
+                $r->print(&Apache::lonwrapper::wrapper($r,$external,$brcrum,$env{'request.use_absolute'},
+                                                       $is_ext,$is_pdf,undef,'','',&mt('Syllabus')));
+            }
             return OK;
         }
     }
 
-    my $crstype = &Apache::loncommon::course_type();
+# ------------------------------------------------------------ Print the screen
+
+    if ($target eq 'tex') {
+        $r->print(&Apache::lonprintout::print_latex_header($env{'form.latex_type'}));
+    }
 
 # ------------------------------ The buck stops here: internal syllabus display
 # --------------------------------------------------------- The syllabus fields
@@ -244,9 +330,8 @@ sub handler {
     if ($allowed) {
 #---------------------------------- Print External URL Syllabus Info if editing
         if ($target ne 'tex') {
-            my $protocol = $Apache::lonnet::protocol{$homeserver};
-            $protocol = 'http' if ($protocol ne 'https');
-            my $link = $protocol.'://'.&Apache::lonnet::hostname($homeserver).$r->uri;
+            my $link = &Apache::lonnet::url_prefix($r,$cdom,$homeserver,'web').
+                       $r->uri;
             $r->print('<div class="LC_left_float">'
                      .'<span class="LC_help_open_topic LC_info">'
                      .'<span class="LC_info">'
@@ -255,7 +340,7 @@ sub handler {
                      .'</span>'
                      .'</div><div style="padding:0;clear:both;margin:0;border:0"></div>'."\n");
             my $lonhost = $r->dir_config('lonHostID');
-            $r->print(&chooser($external,$uploaded,$minimal,$cdom,$cnum,$lonhost,
+            $r->print(&chooser($r,$external,$uploaded,$minimal,$cdom,$cnum,$lonhost,
                                \%syllabusfields,\%syllabus));
         }
     } else {
@@ -330,18 +415,18 @@ sub handler {
             }
             &Apache::lontemplate::print_start_template($r,&mt('Personnel'),'LC_Box',
                                                        'box_000_showpeople',$display);
-            $r->print(&get_personnel($r,$target,$cdom,$cnum,$allowed));
+            $r->print(&get_personnel($r,$target,$cdom,$cnum,$allowed,$crstype,\%syllabus));
             &Apache::lontemplate::print_end_template($r);
         } else {
             unless ($hidepersonnel) {
                 &Apache::lontemplate::print_start_template($r,&mt('Personnel'),'LC_Box');
-                $r->print(&get_personnel($r,$target,$cdom,$cnum,$allowed));  
+                $r->print(&get_personnel($r,$target,$cdom,$cnum,$allowed,$crstype,\%syllabus));  
                 &Apache::lontemplate::print_end_template($r);
             }
         }
     } else {
         unless ($hidepersonnel) {
-            $r->print(&get_personnel($r,$target,$cdom,$cnum,$allowed));
+            $r->print(&get_personnel($r,$target,$cdom,$cnum,$allowed,$crstype,%syllabus));
         }
     }
 # -------------------------------------------------------------- Announcements?
@@ -363,7 +448,7 @@ sub handler {
                                                        'box_111_showrssfeeds',$display);
             my ($numfeeds,$hiddenfeeds,$rsslinktext);
             my $feeds=&Apache::lonrss::advertisefeeds($cnum,$cdom,$forceedit,\$numfeeds,
-                                                      \$hiddenfeeds);
+                                                      \$hiddenfeeds,1);
             if ($numfeeds) {
                 $r->print($feeds);
                 $rsslinktext = &mt('New RSS Feed or Blog');
@@ -383,7 +468,7 @@ sub handler {
                 }
                 $rsslinktext = &mt('Manage Course RSS Feeds/Blogs');
                 if ($crstype eq 'Community') {
-                    $rsslinktext = &mt('Manage Communiity RSS Feeds/Blogs');
+                    $rsslinktext = &mt('Manage Community RSS Feeds/Blogs');
                 }
             }
             my $editurl= &Apache::lonnet::absolute_url().'/adm/'.$cdom.'/'.$cnum.'/_rss.html';
@@ -391,7 +476,7 @@ sub handler {
             &Apache::lontemplate::print_end_template($r);
         } else {
             unless ($hidefeeds) {
-                my $feeds = &Apache::lonrss::advertisefeeds($cnum,$cdom,$forceedit);
+                my $feeds = &Apache::lonrss::advertisefeeds($cnum,$cdom,$forceedit,'','',1);
                 if ($feeds ne '') {
                     &Apache::lontemplate::print_start_template($r,&mt('RSS Feeds and Blogs'),'LC_Box');
                     $r->print($feeds);
@@ -404,10 +489,6 @@ sub handler {
     }
 # ---------------------------------------------------------------- Get syllabus
     if (($syllabus{'uploaded.lastmodified'}) || ($allowed)) {
-        if ($allowed) {
-            $r->print('<form method="post" action="">');
-        }
-
 		my $url_include_handler = sub {
 			my ($r, $field, $message, $group, $data_ref, $fields_ref, $target, $allowed, $display) = @_;
 			my %data = %{$data_ref};
@@ -440,7 +521,7 @@ sub handler {
 				 $r->print($urls);
 				 $r->print("<br /><div>");
 				 &Apache::lontemplate::print_textarea_template($r, $data{$field},
-					$field, Apache::lontemplate->RICH_TEXT_ALWAYS_OFF);
+					$field, $fields{$field}, Apache::lontemplate->RICH_TEXT_ALWAYS_OFF);
 				 &Apache::lontemplate::print_saveall_template($r);                         
 				 $r->print("</div>");
 				 &Apache::lontemplate::print_end_template($r);
@@ -454,7 +535,7 @@ sub handler {
 			$target, $allowed, Apache::lontemplate->RICH_TEXT_DETECT_HTML, \%custom_hash,
                         undef,\%displayfields,\%noshow);
         if ($allowed) {
-            $r->print('</form>'.
+            $r->print('</div></form>'.
             &Apache::lonhtmlcommon::htmlareaselectactive());
         }
     } else {
@@ -544,6 +625,7 @@ ENDSCRIPT
         my $checkedstr = "var include = new Array('".join("','",@checked)."');";
         my $uncheckedstr = "var exclude = new Array('".join("','",@unchecked)."');";
         my $invurl = &mt('Invalid URL');
+        &js_escape(\$invurl);
         my $urlregexp = <<'ENDREGEXP';
 /^([a-z]([a-z]|\d|\+|-|\.)*):(\/\/(((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:)*@)?((\[(|(v[\da-f]{1,}\.(([a-z]|\d|-|\.|_|~)|[!\$&'\(\)\*\+,;=]|:)+))\])|((\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5])\.(\d|[1-9]\d|1\d\d|2[0-4]\d|25[0-5]))|(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=])*)(:\d*)?)(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)*)*|(\/((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)+(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)*)*)?)|((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)+(\/(([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)*)*)|((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)){0})(\?((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)|[\uE000-\uF8FF]|\/|\?)*)?(\#((([a-z]|\d|-|\.|_|~|[\u00A0-\uD7FF\uF900-\uFDCF\uFDF0-\uFFEF])|(%[\da-f]{2})|[!\$&'\(\)\*\+,;=]|:|@)|\/|\?)*)?$/i
 ENDREGEXP
@@ -568,11 +650,16 @@ function toggleEditor(pick) {
 
 var regexp = $urlregexp;
 
-function extUrlPreview(caller) {
+function extUrlPreview(caller,protocol) {
     if (document.getElementById(caller)) {
         var url = document.getElementById(caller).value;
         if (regexp.test(url)) {
-            openMyModal(url,500,400,'yes');
+            var http_regex = /^http\:\/\//gi;
+            if ((protocol == 'https') && (http_regex.test(url))) {
+                window.open(url,"syllabuspreview","height=400,width=500,scrollbars=1,resizable=1,menubar=0,location=1");
+            } else {
+                openMyModal(url,500,400,'yes');
+            }
         } else {
             alert("$invurl");
         }
@@ -664,7 +751,35 @@ ENDSCRIPT
               {href=>$r->uri,
                text=>"Course syllabus"});
         $args->{'bread_crumbs'} = $brcrum;
-    } elsif ($env{'form.folderpath'} =~ /^supplemental/) {
+    } else {
+        &get_breadcrumbs($cdom,$cnum,$crstype,$args);
+    }
+    if ($allowed) {
+        my %loaditem = (
+                         onload => 'setTemplateBoxes();',
+                       );
+        $args->{'add_entries'} = \%loaditem;
+    } else {
+        if ($env{'request.use_absolute'}) {
+            $args->{'use_absolute'} = $env{'request.use_absolute'};
+        }
+    }
+    if ($env{'form.only_body'}) {
+        $args->{'only_body'} = 1;
+    }
+    $args->{'hostname'} = $r->hostname();
+    my $start_page =
+        &Apache::loncommon::start_page("Syllabus", $rss_link.$js,$args);
+    if ($start_page) {
+        $r->print($start_page);
+    }
+}
+
+sub get_breadcrumbs{
+    my ($cdom,$cnum,$crstype,$args) = @_;
+    return unless (ref($args) eq 'HASH');
+    if ($env{'form.folderpath'} =~ /^supplemental/) {
+        &Apache::loncommon::validate_folderpath(1,'',$cnum,$cdom);
         my $title = $env{'form.title'};
         if ($title eq '') {
             $title = &mt('Syllabus');
@@ -673,6 +788,7 @@ ENDSCRIPT
             &Apache::lonhtmlcommon::docs_breadcrumbs(undef,$crstype,undef,$title,1);
         if (ref($brcrum) eq 'ARRAY') {
             $args->{'bread_crumbs'} = $brcrum;
+            $args->{'bread_crumbs_nomenu'} = 1;
         }
     } else {
         if ((&Apache::lonnet::is_on_map("public/$cdom/$cnum/syllabus"))
@@ -685,21 +801,11 @@ ENDSCRIPT
                                       ];
         }
     }
-    if ($allowed) {
-        my %loaditem = (
-                         onload => 'setTemplateBoxes();',
-                       );
-        $args->{'add_entries'} = \%loaditem;
-    }
-    my $start_page =
-        &Apache::loncommon::start_page("Syllabus", $rss_link.$js,$args);
-    if ($start_page) {
-        $r->print($start_page);
-    }
+    return;
 }
 
 sub chooser {
-    my ($external,$uploaded,$minimal,$cdom,$cnum,$lonhost,$fields,$values) = @_;
+    my ($r,$external,$uploaded,$minimal,$cdom,$cnum,$lonhost,$fields,$values) = @_;
     my %lt = &Apache::lonlocal::texthash(
                  'type'          => 'Syllabus Type',
                  'url'           => 'External URL',
@@ -744,6 +850,7 @@ sub chooser {
         $checked{'templatebox'} = $check;
         $display{'templatebox'} = 'block';
     }
+    my $protocol = ($ENV{'SERVER_PORT'} == 443?'https':'http');
 
     my $output = 
         '<form name="syllabus" method="post" enctype="multipart/form-data" action="">'."\n".
@@ -753,30 +860,31 @@ sub chooser {
         $output .= '<label><input type="radio" name="choice" value="'.$item.'" '.$checked{$item}.' onclick="toggleEditor('."'$item'".')" />'.
                    $lt{$item}.'</label><br />';
     }
+    my $urllabeltext = &HTML::Entities::encode(&mt('Enter URL'),'"&<>');
     $output .= '</fieldset></div>'."\n".
                '<div id="url" class="LC_left_float" style="display: '.$display{'url'}.'">'."\n".
                '<fieldset><legend>'.$lt{'chourl'}.'</legend><span class="LC_nobreak">'."\n".
-               '<a href="javascript:extUrlPreview('."'syllabusurl'".');">'.$lt{'pr'}.'</a></span>&nbsp;'."\n".
-               '<input type="text" id="syllabusurl" name="externalsyllabus" value="'.$external.'" size="55" />'."\n".
+               '<a href="javascript:extUrlPreview('."'syllabusurl','$protocol'".');">'.$lt{'pr'}.'</a></span>&nbsp;'."\n".
+               '<input type="text" id="syllabusurl" name="externalsyllabus" value="'.$external.'" size="55" aria-label="'.$urllabeltext.'" />'."\n".
                '&nbsp;<input type="submit" name="storeurl" value="'.$lt{'save'}.'" />'."\n".
                '</fieldset></div>'."\n".
                '<div id="minimal" class="LC_left_float" style="display: '.$display{'minimal'}.'">'."\n".
                '<fieldset><legend>'.$lt{'minimal'}.'</legend>';
     if ($minimal) {
-        my ($absurl,$filename,$depbutton) = &syllabus_file_info($minimal,$cnum,$cdom,$lonhost,'minimal');
+        my ($absurl,$filename,$depbutton) = &syllabus_file_info($r,$minimal,$cnum,$cdom,$lonhost,'minimal');
         $output .= '<a href="javascript:extUrlPreview('."'currminimal'".');">'.$lt{'pr'}.'</a>'.
                    '<input type="hidden" name="minimalfile" value="'.&HTML::Entities::encode($absurl).'?inhibitmenu=yes" id="currminimal" />'.
                    $depbutton;
     } else {
-        $output .= &mt('Title of Syllabus Page:').'&nbsp;'.
-                   '<input type="text" id="minimaltitle" name="syllabustitle" value="'.&mt('Syllabus').'" size="30" />'."\n".
+        $output .= '<label>'.&mt('Title of Syllabus Page:').'&nbsp;'.
+                   '<input type="text" id="minimaltitle" name="syllabustitle" value="'.&mt('Syllabus').'" size="30" /></label>'."\n".
                    '&nbsp;<input type="submit" name="storeminimal" value="'.$lt{'sved'}.'" />'."\n";
     }
     $output .= '</fieldset></div>'."\n".
                '<div id="file" class="LC_left_float" style="display: '.$display{'file'}.'">'."\n".
                '<fieldset><legend>'.$lt{'file'}.'</legend>';
     if ($uploaded) {
-        my ($absurl,$filename,$depbutton) = &syllabus_file_info($uploaded,$cnum,$cdom,$lonhost,'file');
+        my ($absurl,$filename,$depbutton) = &syllabus_file_info($r,$uploaded,$cnum,$cdom,$lonhost,'file');
         $output .= '<span class="LC_nobreak">'.$lt{'curr'}.'&nbsp;'.
                    '<input type="hidden" name="uploadedfile" value="'.&HTML::Entities::encode($absurl).'?inhibitmenu=yes" id="currfile" />'.
                    '<a href="javascript:extUrlPreview('."'currfile'".');">'.$filename.'</a></span>'.$depbutton.
@@ -784,9 +892,10 @@ sub chooser {
     } else {
         $output .= $lt{'upl'};
     }
+    my $labeltext = &HTML::Entities::encode(&mt('Choose syllabus file'),'"&<>');
     $output .= '<br />'."\n".
                '<span class="LC_nobreak">'.
-               '<input type="file" name="syllabusfile" size="55" />'."\n".
+               '<input type="file" name="syllabusfile" size="55" aria-label="'.$labeltext.'" />'."\n".
                '&nbsp;<input type="submit" name="storefile" value="'.$lt{'save'}.'" />'.
                '</span><br />'.
                '<label>'.
@@ -811,14 +920,25 @@ sub chooser {
 }
 
 sub syllabus_file_info {
-    my ($item,$cnum,$cdom,$lonhost,$context) = @_;
+    my ($r,$item,$cnum,$cdom,$lonhost,$context) = @_;
+    my $hostname = &Apache::lonnet::hostname($lonhost);
     my $protocol = $Apache::lonnet::protocol{$lonhost};
     $protocol = 'http' if ($protocol ne 'https');
-    my $absurl = $protocol.'://'.&Apache::lonnet::hostname($lonhost).$item;
+    my $alias = &Apache::lonnet::use_proxy_alias($r,$lonhost);
+    $hostname = $alias if ($alias ne '');
+    my $absurl = $protocol.'://'.$hostname.$item;
     my ($filename) = ($item =~ m{([^/]+)$});
     my $file=&Apache::lonnet::filelocation("",$item);
-    my $depbutton;
-    if ($file =~ /\.html?$/) {
+    my ($depbutton,$filetype,$editable);
+    if ($file =~ /\.(xhtml|xml|tex|html|htm)$/) {
+        $filetype=$1;
+    }
+    if ($filetype) {
+        unless ($filetype eq 'tex') {
+            $filetype='html';
+        }
+    }
+    if ($filetype eq 'html') {
         my $filecontents=&Apache::lonnet::getfile($file);
         unless ($filecontents eq -1) {
             my $mm = new File::MMagic;
@@ -833,12 +953,13 @@ sub syllabus_file_info {
                                                                  \%codebase,
                                                                  {'context' => 'rewrites',
                                                                   'ignore_remote_references' => 1,});
-                $depbutton = ('&nbsp;' x 3).
-                             &editfile_button($item,$context).
-                             &editbutton_js();
+                $editable = 1;
             }
         }
     }
+    $depbutton = ('&nbsp;' x 3).
+                 &editfile_button($item,$context,$editable).
+                 &editbutton_js();
     return ($absurl,$filename,$depbutton);
 }
 
@@ -920,49 +1041,120 @@ sub fields_check_uncheck {
 }
 
 sub get_personnel {
-    my ($r,$target,$cdom,$cnum,$allowed) = @_;
+    my ($r,$target,$cdom,$cnum,$allowed,$crstype,$syllabus) = @_;
+    my (%hiddenroles,%hiddenusers);
+    if (ref($syllabus) eq 'HASH') {
+        if (ref($syllabus->{'personnel'}) eq 'HASH') {
+            if ($syllabus->{'personnel'}{'hiderole'}) {
+                map { $hiddenroles{$_} = 1; } split(/,/,$syllabus->{'personnel'}{'hiderole'});
+            }
+            if ($syllabus->{'personnel'}{'hideuser'}) {
+                map { $hiddenusers{$_} = 1; } split(/,/,$syllabus->{'personnel'}{'hideuser'});
+            }
+        }
+    }
     my $output;
-    my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'/'.$cnum);
+    my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'/'.$cnum,1);
     if ($target ne 'tex') {
-        $r->print(&Apache::lonhtmlcommon::start_pick_box());
+        if ($allowed) {
+            $r->print(&Apache::loncommon::start_data_table().
+                      &Apache::loncommon::start_data_table_header_row().
+                      '<th>'.&mt('Role (hidden if checked)').'</th>'.
+                      '<th>'.&mt('Personnel (hidden if checked)').'</th>'.
+                      &Apache::loncommon::end_data_table_header_row());
+        } else {
+            $r->print(&Apache::lonhtmlcommon::start_pick_box());
+        }
     } else {
         $r->print('\begin{tabular}{|p{0.45\textwidth}|p{0.45\textwidth}|}\hline');
     }
     my @personnel=sort(keys(%coursepersonnel));
     my $lastpers=$personnel[$#personnel];
     foreach my $element (@personnel) {
+        unless ($allowed) {
+            next if ($hiddenroles{$element}) 
+        }
+        my ($role,$sec);
+        if ($element =~ /:/) {
+            ($role,$sec) = split(/:/,$element);
+        } else {
+            $role = $element;
+        }
+        my $roletext = &Apache::lonnet::plaintext($role,$crstype);
+        if ($sec) {
+            $roletext .=' ('.&Apache::lonlocal::mt('Section [_1]',$sec).')';
+        }
         if ($target ne 'tex') {
-            $r->print(&Apache::lonhtmlcommon::row_title($element));
+            if ($allowed) {
+                my $checked;
+                if ($hiddenroles{$element}) {
+                    $checked = ' checked="checked"';
+                }
+                $r->print(&Apache::loncommon::start_data_table_row().
+                          '<td><span class="LC_nobreak"><label>'.
+                          '<input type="checkbox" name="hiderole" value="'.$element.'" '.
+                          $checked.' />'.$roletext.'</label></span></td><td>');
+            } else {
+                $r->print(&Apache::lonhtmlcommon::row_title($roletext));
+            }
         } else {
-            $r->print(' '.&Apache::lonxml::xmlparse($r,'tex',$element).' & ');
+            $r->print(' '.&Apache::lonxml::xmlparse($r,'tex',$roletext).' & ');
         }
         my @coursepersonlist;
         foreach my $user (split(/\,/,$coursepersonnel{$element})) {
             my ($puname,$pudom)=split(/\:/,$user);
             if ($target ne 'tex') {
                 my $courseperson = &Apache::loncommon::plainname($puname,$pudom);
-                if (($env{'user.name'} eq '') || ($env{'user.name'} eq 'public') ||
-                    ($env{'user.domain'} eq '') || ($env{'user.domain'} eq 'public')) {
-                    push(@coursepersonlist,$courseperson);
+                my $checked;
+                if ($hiddenusers{$element.'&'.$puname.':'.$pudom}) {
+                    $checked = ' checked="checked"';
+                }
+                if ($allowed) {
+                    my $item = '<span class="LC_nobreak"><label>'.
+                               '<input type="checkbox" name="hideuser" value="'.$element.'&amp;'.$puname.':'.$pudom.'"'.$checked.' />'.
+                               &Apache::loncommon::aboutmewrapper($courseperson
+,
+                                               $puname,$pudom).
+                               '</label>'.('&nbsp;'x2).'</span> ';
+                    push(@coursepersonlist,$item);
+
                 } else {
-                    push(@coursepersonlist,&Apache::loncommon::aboutmewrapper($courseperson,
-                              $puname,$pudom));
+                    next if ($hiddenusers{$element.'&'.$puname.':'.$pudom});
+                    if (($env{'user.name'} eq '') || ($env{'user.name'} eq 'public') ||
+                        ($env{'user.domain'} eq '') || ($env{'user.domain'} eq 'public')) {
+                        push(@coursepersonlist,$courseperson);
+                    } else {
+                        push(@coursepersonlist,&Apache::loncommon::aboutmewrapper($courseperson,
+                                               $puname,$pudom));
+                    }
                 }
             } else {
                 push(@coursepersonlist,&Apache::loncommon::plainname($puname,
                               $pudom).' ');
             }
         }
-        $r->print(join(", ",@coursepersonlist));
+        if ($allowed) {
+            $r->print(join('',@coursepersonlist));
+        } else {
+            $r->print(join(', ',@coursepersonlist));
+        }
         if ($target ne 'tex') {
-            my $lastclose=$element eq $lastpers?1:0;
-            $r->print(&Apache::lonhtmlcommon::row_closure($lastclose));
+            if ($allowed) {
+                $r->print('</td>'.&Apache::loncommon::end_data_table_row());
+            } else {
+                my $lastclose=$element eq $lastpers?1:0;
+                $r->print(&Apache::lonhtmlcommon::row_closure($lastclose));
+            }
         } else {
             $r->print('\\\\ \hline');
         }
     }
     if ($target ne 'tex') {
-        $r->print(&Apache::lonhtmlcommon::end_pick_box());
+        if ($allowed) {
+            $r->print(&Apache::loncommon::end_data_table());
+        } else {
+            $r->print(&Apache::lonhtmlcommon::end_pick_box());
+        }
     } else {
         $r->print('\end{tabular}\\\\');
     }
@@ -972,27 +1164,47 @@ sub get_personnel {
 sub save_changes {
     my ($cnum,$cdom,$uploaded,$external,$minimal,$syllabus,$syllabusfields,$courseenv) = @_;
     my ($earlyout,$output);
-    unless ((ref($syllabus) eq 'HASH') && (ref($syllabusfields) eq 'HASH')) {
+    unless ((ref($syllabus) eq 'HASH') && (ref($syllabusfields) eq 'HASH') ||
+            (ref($courseenv) eq 'HASH')) {
         return ($earlyout,$uploaded,$external,$minimal,$output);
     }
-    if ($env{'form.deleteuploaded'}) {
+    my ($was_ext,$is_ext,$putres);
+    if ($external) {
+        $was_ext = $external;
+    }
+    if (($env{'form.deleteuploaded_file'}) || ($env{'form.deleteuploaded_minimal'})) {
         my %storehash;
         if (($env{'form.choice'} eq 'file') && 
-            ($env{'form.deleteuploaded'} eq 'file') && ($uploaded =~ /\w/)) {
+            ($env{'form.deleteuploaded_file'}) && ($uploaded =~ /\w/)) {
+            if ($courseenv->{'uploadedsyllabus'} =~ m{^\Q/uploaded/$cdom/$cnum/portfolio\E(/syllabus/.+)$}) {
+                my $filename = $1;
+                &update_access_permissions($cdom,$cnum,$filename);
+            }
             &Apache::lonnet::delenv('course.'.$env{'request.course.id'}.'.uploadedsyllabus');
             &Apache::lonnet::delenv('course.'.$env{'request.course.id'}.'.externalsyllabus');
             $storehash{'uploadedsyllabus'} = '';
             $storehash{'externalsyllabus'} = '';
-            my $putres = &Apache::lonnet::put('environment',\%storehash,$cdom,$cnum);
+            $putres = &Apache::lonnet::put('environment',\%storehash,$cdom,$cnum);
             undef($uploaded);
             undef($external);
         } elsif (($env{'form.choice'} eq 'minimal') &&
-                 ($env{'form.deleteuploaded'} eq 'minimal') && ($minimal =~ /\w/)) {
+                 ($env{'form.deleteuploaded_minimal'}) && ($minimal =~ /\w/)) {
+            my $minimalurl = "/uploaded/$cdom/$cnum/portfolio/syllabus/loncapa.html";
+            if ($courseenv->{'minimalsyllabus'} eq "$minimalurl") {
+                my $filecontents=&Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$minimalurl));
+                unless ($filecontents eq -1) {
+                    $env{'form.output'} = $filecontents; 
+                    &Apache::lonnet::finishuserfileupload($cnum,$cdom,'output',
+                                                          'portfolio/syllabus/loncapa.html.bak');
+                    $minimalurl = &default_minimal_syllabus($cnum,$cdom);
+                }
+            }
+            &update_access_permissions($cdom,$cnum,'/syllabus/loncapa.html');
             &Apache::lonnet::delenv('course.'.$env{'request.course.id'}.'.externalsyllabus');
             &Apache::lonnet::delenv('course.'.$env{'request.course.id'}.'.minimalsyllabus');
             $storehash{'externalsyllabus'} = '';
             $storehash{'minimalsyllabus'} = '';
-            my $putres = &Apache::lonnet::put('environment',\%storehash,$cdom,$cnum);
+            $putres = &Apache::lonnet::put('environment',\%storehash,$cdom,$cnum);
             undef($external);
             undef($minimal);
         }
@@ -1010,16 +1222,41 @@ sub save_changes {
                     my ($prefix) = split(/_/,$field);
                     $syllabus->{'uploaded.fields'} .= $prefix.',';
                 }
+                if ($field eq '000_showpeople') {
+                    my @hideusers = &Apache::loncommon::get_env_multiple('form.hideuser');
+                    my @hideroles = &Apache::loncommon::get_env_multiple('form.hiderole');
+                    my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'/'.$cnum,1);
+                    my %personnel;
+                    foreach my $key (keys(%coursepersonnel)) {
+                        map { $personnel{$key}{$_} = 1; } split(/,/,$coursepersonnel{$key});
+                    }
+                    %{$syllabus->{'personnel'}} = ();
+                    $syllabus->{'personnel'}{'hideuser'} = '';
+                    $syllabus->{'personnel'}{'hiderole'} = '';
+                    foreach my $role (@hideroles) {
+                        if (exists($personnel{$role})) {
+                            $syllabus->{'personnel'}{'hiderole'} .= $role.',';
+                        }
+                    }
+                    foreach my $item (@hideusers) {
+                        my ($role,$user) = split(/\&/,$item);
+                        if (ref($personnel{$role}) eq 'HASH') {
+                            if ($personnel{$role}{$user}) {
+                                $syllabus->{'personnel'}{'hideuser'} .= $item.',';
+                            }
+                        }
+                    }
+                    $syllabus->{'personnel'}{'hideuser'} =~ s/,$//;
+                    $syllabus->{'personnel'}{'hiderole'} =~ s/,$//;
+                }
             }
             $syllabus->{'uploaded.fields'} =~ s/,$//;
         }
         foreach my $syl_field (keys(%{$syllabusfields})) {
             my $field=$env{'form.'.$syl_field};
             chomp($field);
-            $field=~s/\s+$//s;
-            $field=~s/^\s+//s;
-            $field=~s/\<br\s*\/*\>$//s;
-            $field=&Apache::lonfeedback::clear_out_html($field,1);
+            my $gateway = Apache::lonhtmlgateway->new();
+            $field = $gateway->process_incoming_html($field,1);
                             #here it will be stored
             $syllabus->{$syl_field}=$field;
             if ($syl_field eq 'lll_includeurl') { # clean up included URLs
@@ -1057,30 +1294,11 @@ sub save_changes {
         $syllabus->{'uploaded.domain'}=$env{'user.domain'};
         $syllabus->{'uploaded.name'}=$env{'user.name'};
         $syllabus->{'uploaded.lastmodified'} = $now;
-        my $putres = &Apache::lonnet::put('syllabus',$syllabus,$cdom,$cnum);
+        $putres = &Apache::lonnet::put('syllabus',$syllabus,$cdom,$cnum);
         if ($putres eq 'ok') {
-            my %storehash;
-            if ($courseenv->{'uploadedsyllabus'}) {
-                &Apache::lonnet::delenv('course.'.$env{'request.course.id'}.'.uploadedsyllabus');
-                $storehash{'uploadedsyllabus'} = '';
-            }
-            if ($courseenv->{'externalsyllabus'}) {
-                &Apache::lonnet::delenv('course.'.$env{'request.course.id'}.'.externalsyllabus');
-                $storehash{'externalsyllabus'} = '';
-            }
-            if ($courseenv->{'minimalsyllabus'}) {
-                &Apache::lonnet::delenv('course.'.$env{'request.course.id'}.'.minimalsyllabus');
-                $storehash{'minimalsyllabus'} = '';
-            }
-            $storehash{'updatedsyllabus'} = $now;
-            &Apache::lonnet::put('environment',\%storehash,$cdom,$cnum);
-            &Apache::lonnet::appenv({'course.'.$env{'request.course.id'}.'.updatedsyllabus' => $now});
-            if (($courseenv->{'externalsyllabus'} || $courseenv->{'uploadedsyllabus'}) ||
-                ($courseenv->{'minimalsyllabus'})) {
-                undef($uploaded);
-                undef($external);
-                undef($minimal);
-            }
+            ($uploaded,$minimal,$external) = 
+                &update_syllabus_env($cdom,$cnum,$courseenv,$env{'form.choice'},$uploaded,
+                                     $minimal,$external);
             $output = '<div>'.
                       &Apache::lonhtmlcommon::confirm_success(&mt('Template saved.')).
                       '</div>';
@@ -1095,25 +1313,13 @@ sub save_changes {
                 $output = '<div class="LC_info">'.
                           &mt('External URL unchanged.').
                           '</div>';
-                if ($uploaded) {
-                    my $prefix;
-                    my $home=&Apache::lonnet::homeserver($cnum,$cdom);
-                    if ($home ne 'no_host') {
-                        my $protocol = $Apache::lonnet::protocol{$home};
-                        $protocol = 'http' if ($protocol ne 'https');
-                        $prefix = $protocol.'://'.&Apache::lonnet::hostname($home);
-                    }
-                    unless ($external =~ m{^\Q$prefix/uploaded/$cdom/$cnum/portfolio/syllabus\E}) {
-                        &Apache::lonnet::delenv('course.'.$env{'request.course.id'}.'.uploadedsyllabus');
-                        &Apache::lonnet::put('environment',{uploadedsyllabus => ''},
-                                             $cdom,$cnum);
-                        undef($uploaded);
-                    }
-                }
+                ($uploaded,$minimal,$external) =
+                    &update_syllabus_env($cdom,$cnum,$courseenv,$env{'form.choice'},$uploaded,
+                                         $minimal,$external);
             } else {
                 $external=$env{'form.externalsyllabus'};
                 $external =~ s/(`)//g;
-                my $putres =
+                $putres =
                     &Apache::lonnet::put('environment',{externalsyllabus=>$external},
                                          $cdom,$cnum);
                 if ($putres eq 'ok') {
@@ -1121,27 +1327,16 @@ sub save_changes {
                     $output = '<div>'.
                               &Apache::lonhtmlcommon::confirm_success(&mt('External URL saved.')).
                              '</div>';
-                    if ($uploaded) {
-                        my $prefix;
-                        my $home=&Apache::lonnet::homeserver($cnum,$cdom);
-                        if ($home ne 'no_host') {
-                            my $protocol = $Apache::lonnet::protocol{$home};
-                            $protocol = 'http' if ($protocol ne 'https');
-                            $prefix = $protocol.'://'.&Apache::lonnet::hostname($home);
-                        }
-                        unless ($external =~ m{^\Q$prefix/uploaded/$cdom/$cnum/portfolio/syllabus\E}) {
-                            &Apache::lonnet::delenv('course.'.$env{'request.course.id'}.'.uploadedsyllabus');
-                            &Apache::lonnet::put('environment',{uploadedsyllabus => ''},
-                                                 $cdom,$cnum);
-                            undef($uploaded);
-                        }
-                    }
+                    ($uploaded,$minimal,$external) =
+                        &update_syllabus_env($cdom,$cnum,$courseenv,$env{'form.choice'},$uploaded,
+                                             $minimal,$external);
                 } else {
                     $output = '<div class="LC_error">'.
                               &mt('An error occurred storing the external URL: [_1]',$putres).
                               '</div>';
                 }
             }
+            $is_ext = $external;
         } else {
             $output = '<div class="LC_error">'.
                       &mt('External URL not saved -- invalid URL.').
@@ -1157,42 +1352,21 @@ sub save_changes {
                 ($url,$needlink) = &process_upload(\$output,$cnum,$cdom,
                                                    \%allfiles,\%codebase);
             } else {
-                $output = '<div class="LC_info">';
+                $output = '<div class="LC_info">'.
                           &mt('No file uploaded').
                           '</div>';
             }
         } elsif ($env{'form.choice'} eq 'minimal') {
-            my $title = $env{'form.syllabustitle'};
-            $title =~ s{`}{}g;
-            $title=~s/^\s+//;
-            $title=~s/\s+$//;
-            if ($title eq '') {
-                $title = &mt('Syllabus');
+            $url = "/uploaded/$cdom/$cnum/portfolio/syllabus/loncapa.html";
+            my $filecontents=&Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$url));
+            if ($filecontents eq -1) {
+                $url = &default_minimal_syllabus($cnum,$cdom);
             }
-            my $initialtext = &mt('Replace with your own content.');
-            my $newhtml = <<END;
-<html>
-<head>
-<title>$title</title>
-</head>
-<body bgcolor="#ffffff">
-<h2>$title</h2>
-$initialtext
-</body>
-</html>
-END
-            $env{'form.output'}=$newhtml;
-            $url =
-                 &Apache::lonnet::finishuserfileupload($cnum,$cdom,'output',
-                                                       'portfolio/syllabus/loncapa.html');
         }
         if ($url =~ m{^/uploaded/\Q$cdom\E/\Q$cnum\E.*/[^/]+$}) {
-            my $exturl;
-            my $home=&Apache::lonnet::homeserver($cnum,$cdom);
-            if ($home ne 'no_host') {
-                my $protocol = $Apache::lonnet::protocol{$home};
-                $protocol = 'http' if ($protocol ne 'https');
-                $exturl = $protocol.'://'.&Apache::lonnet::hostname($home).$url;
+            my $exturl = &home_http_host($cdom,$cnum);
+            if ($exturl) {
+                $exturl .= $url;
             }
             my %storehash;
             if ($env{'form.choice'} eq 'minimal') {
@@ -1208,7 +1382,7 @@ END
             } else {
                 $storehash{'externalsyllabus'} = '',
             }
-            my $putres =
+            $putres =
                 &Apache::lonnet::put('environment',\%storehash,$cdom,$cnum);
             if ($putres eq 'ok') {
                 &Apache::lonnet::make_public_indefinitely($url);
@@ -1224,6 +1398,9 @@ END
                     $output .= &return_to_editor($cdom,$cnum);
                     $earlyout = 1;
                 }
+                ($uploaded,$minimal,$external) =
+                    &update_syllabus_env($cdom,$cnum,$courseenv,$env{'form.choice'},$uploaded,
+                                         $minimal,$external);
             } else {
                 $error = 1;
                 $errormsg = $putres;
@@ -1270,9 +1447,165 @@ END
         $output = $result.&return_to_editor($cdom,$cnum);
         $earlyout = 1;
     }
+    if ($putres eq 'ok') {
+        if ((($is_ext) && ($is_ext ne $was_ext)) || ($was_ext)) {
+            my $chome = &Apache::lonnet::homeserver($cnum,$cdom);
+            unless ($chome eq 'no_host') {
+                my %crsinfo = &Apache::lonnet::courseiddump($cdom,'.',1,'.','.',$cnum,undef,undef,'.');
+                if (ref($crsinfo{$cdom.'_'.$cnum}) eq 'HASH') {
+                    if ($external =~ m{^http://}) {
+                        $crsinfo{$cdom.'_'.$cnum}{'extsyllplain'} = 1;
+                    } elsif ($crsinfo{$cdom.'_'.$cnum}{'extsyllplain'}) {
+                        delete($crsinfo{$cdom.'_'.$cnum}{'extsyllplain'});
+                    }
+                    &Apache::lonnet::courseidput($cdom,\%crsinfo,$chome,'notime');
+                }
+            }
+        }
+    }
     return ($earlyout,$uploaded,$external,$minimal,$output);
 }
 
+sub default_minimal_syllabus {
+    my ($cnum,$cdom) = @_;
+    my $title;
+    if ($env{'form.syllabustitle'}) {
+        $title = $env{'form.syllabustitle'};
+        $title =~ s{`}{}g;
+        $title=~s/^\s+//;
+        $title=~s/\s+$//;
+    }
+    if ($title eq '') {
+        $title = &mt('Syllabus');
+    }
+    my $initialtext = &mt('Replace with your own content.');
+    my $newhtml = <<END;
+<html>
+<head>
+<title>$title</title>
+</head>
+<body bgcolor="#ffffff">
+<h2>$title</h2>
+$initialtext
+</body>
+</html>
+END
+    $env{'form.output'}=$newhtml;
+    return &Apache::lonnet::finishuserfileupload($cnum,$cdom,'output',
+                                                 'portfolio/syllabus/loncapa.html');
+}
+
+sub update_syllabus_env {
+    my ($cdom,$cnum,$courseenv,$saved,$uploaded,$minimal,$external) = @_;
+    return ($uploaded,$minimal,$external) unless(ref($courseenv) eq 'HASH');
+    my $now = time;
+    my (@envkeys,%storehash);
+    if ($saved eq 'template') {
+        if ($uploaded || $env{'course.'.$env{'request.course.id'}.'.uploadedsyllabus'}) {
+            push(@envkeys,'uploaded');
+        }
+        if ($minimal || $env{'course.'.$env{'request.course.id'}.'.minimalsyllabus'}) {
+            push(@envkeys,'minimal');
+        }
+        if ($external || $env{'course.'.$env{'request.course.id'}.'.externalsyllabus'}) {
+            push(@envkeys,'external');
+        }
+        $storehash{'updatedsyllabus'} = $now;
+        &Apache::lonnet::appenv({'course.'.$env{'request.course.id'}.'.updatedsyllabus' => $now
+});
+    } elsif ($saved eq 'url') {
+        my $prefix = &home_http_host($cdom,$cnum);
+        if ($external =~ m{^\Q$prefix/uploaded/$cdom/$cnum/portfolio/syllabus/\E(.+)$}) {
+            my $file = $1;
+            if ($file eq 'loncapa.html') {
+                if ($uploaded || $env{'course.'.$env{'request.course.id'}.'.uploadedsyllabus'}) {
+                    push(@envkeys,'uploaded');
+                }
+            } elsif ($minimal || $env{'course.'.$env{'request.course.id'}.'.minimalsyllabus'}) {
+                push(@envkeys,'minimal');
+            }
+        } else {
+            if ($uploaded || $env{'course.'.$env{'request.course.id'}.'.uploadedsyllabus'}) {
+                push(@envkeys,'uploaded');
+            }
+            if ($minimal || $env{'course.'.$env{'request.course.id'}.'.minimalsyllabus'}) {
+                push(@envkeys,'minimal');
+            }
+        }
+    } elsif ($saved eq 'file') {
+        if ($minimal || $env{'course.'.$env{'request.course.id'}.'.minimalsyllabus'}) {
+            push(@envkeys,'minimal');
+        }
+    } elsif ($saved eq 'minimal') {
+        if ($uploaded || $env{'course.'.$env{'request.course.id'}.'.uploadedsyllabus'}) {
+            push(@envkeys,'uploaded');
+        }
+    }
+    if (@envkeys > 0) {
+        foreach my $item (@envkeys) {
+            my $key = $item.'syllabus';
+            if ($courseenv->{$key} ne '') {
+                &Apache::lonnet::delenv('course.'.$env{'request.course.id'}.'.'.$key);
+                if ($item eq 'minimal') {
+                    &update_access_permissions($cdom,$cnum,'/syllabus/loncapa.html');
+                } elsif ($item eq 'uploaded') {
+                    if ($courseenv->{$key} =~ m{^\Q/uploaded/$cdom/$cnum/portfolio\E(/syllabus/.+)$}) {
+                        my $filename = $1;
+                        &update_access_permissions($cdom,$cnum,$filename);
+                    }
+                }
+                $storehash{$key} = '';
+            } elsif ($env{'course.'.$env{'request.course.id'}.'.'.$key} ne '') {
+                &Apache::lonnet::delenv('course.'.$env{'request.course.id'}.'.'.$key);
+            }
+            if ($item eq 'uploaded') {
+                undef($uploaded);
+            }
+            if ($item eq 'external') {
+                undef($external);
+            }
+            if ($item eq 'minimal') {
+                undef($minimal);
+            }
+        }
+    }
+    if (keys(%storehash) > 0) {
+        &Apache::lonnet::put('environment',\%storehash,$cdom,$cnum);
+    }
+    return ($uploaded,$minimal,$external);
+}
+
+sub update_access_permissions {
+    my ($cdom,$cnum,$file_name) = @_;
+    my $current_permissions = &Apache::lonnet::get_portfile_permissions($cdom,$cnum);
+    my %access_controls =
+        &Apache::lonnet::get_access_controls($current_permissions,'',$file_name);
+    if (keys(%access_controls) > 0) {
+        my %changes;
+        foreach my $key (keys(%{$access_controls{$file_name}})) {
+            $changes{'delete'}{$key} = 1;
+        }
+        if (keys(%changes) > 0) {
+            my ($outcome,$deloutcome,$new_values,$translation) =
+                &Apache::lonnet::modify_access_controls($file_name,\%changes,
+                                                        $cdom,$cnum);
+        }
+    }
+    return; 
+}
+
+sub home_http_host {
+    my ($cdom,$cnum) = @_;
+    my $home=&Apache::lonnet::homeserver($cnum,$cdom);
+    if ($home ne 'no_host') {
+        my $hostname = &Apache::lonnet::hostname($home);
+        my $protocol = $Apache::lonnet::protocol{$home};
+        $protocol = 'http' if ($protocol ne 'https');
+        return $protocol.'://'.$hostname;
+    }
+    return;
+}
+
 sub process_upload {
     my ($upload_output,$cnum,$cdom,$allfiles,$codebase) = @_;
     my ($parseaction,$showupload,$mimetype);
@@ -1358,18 +1691,29 @@ sub return_to_editor {
 }
 
 sub editfile_button {
-    my ($url,$context) = @_;
+    my ($url,$context,$editable) = @_;
     my $edittext=&mt('Edit');
     my $deltext=&mt('Delete');
-    return <<"END";
-                <input type="button" value="$edittext" onclick="javascript:gotoeditor('$url');" name="edit_$context" />
-                &nbsp;&nbsp;&nbsp;
-                <input type="button" value="$deltext" onclick="javascript:dodelete('$context');" name="del_$context" />
-                <input type="hidden" value="" name="deleteuploaded" />
-END
+    my $output;
+    if ($editable) {
+        $output = '
+                <input type="button" value="'.$edittext.'" onclick="javascript:gotoeditor('."'$url'".');" name="edit_'.$context.'" />
+                &nbsp;&nbsp;&nbsp;';
+    }
+    $output .= '
+                <input type="button" value="'.$deltext.'" onclick="javascript:dodelete('."'$context'".');" name="del_'.$context.'" />
+                <input type="hidden" value="" name="deleteuploaded_'.$context.'" id="deleteuploaded_'.$context.'" />
+    ';
+    return $output;
 }
 
 sub editbutton_js {
+    my %js_lt = &Apache::lonlocal::texthash(
+               min    => 'Are you sure you want to delete the contents of the syllabus template?',
+               file   => 'Are you sure you want to delete the uploaded syllabus file?',
+               noundo => 'This action cannot be reversed.'
+             );
+    &js_escape(\%js_lt);
     return <<ENDJS;
                 <script type="text/javascript">
                 // <![CDATA[
@@ -1377,13 +1721,37 @@ sub editbutton_js {
                       document.location.href = url+'?editmode=1&forceedit=1';
                   }
                   function dodelete(caller,url) {
-                      document.syllabus.deleteuploaded.value=caller;
-                      document.syllabus.submit();
+                      if (document.getElementById('deleteuploaded_'+caller)) {
+                          document.getElementById('deleteuploaded_'+caller).value=1;
+                          if (caller == 'minimal') {
+                              if (confirm("$js_lt{'min'}"+"\\n"+"$js_lt{'noundo'}")) {
+                                  document.syllabus.submit();
+                              }
+                          }
+                          if (caller == 'file') {
+                              if (confirm("$js_lt{'file'}"+"\\n"+"$js_lt{'noundo'}")) {
+                                  document.syllabus.submit();
+                              }
+                          }
+                      }
+                      return;   
                   }
                 // ]]>
                 </script>
 ENDJS
 }
 
+sub redirect_to_http {
+    my ($r) = @_;
+    &Apache::loncommon::content_type($r,'text/html');
+    &Apache::loncommon::no_cache($r);
+    $r->send_http_header;
+    my $url = 'http://'.$r->hostname().$r->uri().'?usehttp=1';
+    $r->print(&Apache::loncommon::start_page(undef,undef,
+                                             {'redirect' => [0,$url],}).
+              &Apache::loncommon::end_page());
+    return;
+}
+
 1;
 __END__