--- loncom/interface/lonsyllabus.pm	2013/05/19 15:48:51	1.128
+++ loncom/interface/lonsyllabus.pm	2024/01/25 22:23:32	1.155
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Syllabus
 #
-# $Id: lonsyllabus.pm,v 1.128 2013/05/19 15:48:51 raeburn Exp $
+# $Id: lonsyllabus.pm,v 1.155 2024/01/25 22:23:32 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') {
@@ -73,12 +75,6 @@ sub handler {
     my %courseenv=&Apache::lonnet::dump('environment',$cdom,$cnum);
     my $crstype = &Apache::loncommon::course_type();
 
-# ------------------------------------------------------------ Print the screen
-
-    if ($target eq 'tex') {
-        $r->print(&Apache::lonprintout::print_latex_header($env{'form.latex_type'}));
-    }
-
 # --------------------------------------------------------------- Force Student
     my ($forceedit,$forcestudent);
     if ($env{'form.forceedit'}) { $forceedit=1; }
@@ -103,8 +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);
@@ -115,29 +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 ($file =~ /\.(tex|x?html?)$/) {  
+            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 'tex') {
-                    my $result = &Apache::lontexconvert::converted(\$filecontents,
-                                                                $env{'form.texengine'});
-                    my %args;
-                    &get_breadcrumbs($cdom,$cnum,$crstype,\%args);
-                    $r->print(&Apache::loncommon::start_page("Syllabus",undef,\%args).
-                              $result.
-                              &Apache::loncommon::end_page());
+                    if ($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;
-                    my $result = &Apache::lonxml::xmlparse($r,'web',$filecontents,
+                    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;
@@ -145,17 +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;
         }
     }
 
+# ------------------------------------------------------------ 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
@@ -246,9 +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">'
@@ -257,7 +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 {
@@ -385,7 +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.'/'.$cnum.'/_rss.html';
@@ -406,10 +489,6 @@ sub handler {
     }
 # ---------------------------------------------------------------- Get syllabus
     if (($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};
@@ -456,7 +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 {
@@ -546,6 +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
@@ -570,11 +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");
         }
@@ -674,7 +759,15 @@ ENDSCRIPT
                          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) {
@@ -686,6 +779,7 @@ 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 '') {
             $title = &mt('Syllabus');
@@ -694,6 +788,7 @@ sub get_breadcrumbs{
             &Apache::lonhtmlcommon::docs_breadcrumbs(undef,$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"))
@@ -710,7 +805,7 @@ sub get_breadcrumbs{
 }
 
 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',
@@ -755,6 +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".
@@ -767,14 +863,14 @@ sub chooser {
     $output .= '</fieldset></div>'."\n".
                '<div id="url" class="LC_left_float" style="display: '.$display{'url'}.'">'."\n".
                '<fieldset><legend>'.$lt{'chourl'}.'</legend><span class="LC_nobreak">'."\n".
-               '<a href="javascript:extUrlPreview('."'syllabusurl'".');">'.$lt{'pr'}.'</a></span>&nbsp;'."\n".
+               '<a href="javascript:extUrlPreview('."'syllabusurl','$protocol'".');">'.$lt{'pr'}.'</a></span>&nbsp;'."\n".
                '<input type="text" id="syllabusurl" name="externalsyllabus" value="'.$external.'" size="55" />'."\n".
                '&nbsp;<input type="submit" name="storeurl" value="'.$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" />'.
                    $depbutton;
@@ -787,7 +883,7 @@ sub chooser {
                '<div id="file" class="LC_left_float" style="display: '.$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.
@@ -822,10 +918,13 @@ 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 ($depbutton,$filetype,$editable);
@@ -1011,7 +1110,7 @@ sub get_personnel {
                 }
                 if ($allowed) {
                     my $item = '<span class="LC_nobreak"><label>'.
-                               '<input type="checkbox" name="hideuser" value="'.$element.'&'.$puname.':'.$pudom.'"'.$checked.' />'.
+                               '<input type="checkbox" name="hideuser" value="'.$element.'&amp;'.$puname.':'.$pudom.'"'.$checked.' />'.
                                &Apache::loncommon::aboutmewrapper($courseperson
 ,
                                                $puname,$pudom).
@@ -1040,7 +1139,7 @@ sub get_personnel {
         }
         if ($target ne 'tex') {
             if ($allowed) {
-                $r->print(&Apache::loncommon::end_data_table_row());
+                $r->print('</td>'.&Apache::loncommon::end_data_table_row());
             } else {
                 my $lastclose=$element eq $lastpers?1:0;
                 $r->print(&Apache::lonhtmlcommon::row_closure($lastclose));
@@ -1064,27 +1163,47 @@ 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);
     }
+    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') && 
             ($env{'form.deleteuploaded_file'}) && ($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') &&
                  ($env{'form.deleteuploaded_minimal'}) && ($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);
         }
@@ -1135,10 +1254,8 @@ sub save_changes {
         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
@@ -1176,7 +1293,7 @@ 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 ($putres eq 'ok') {
             ($uploaded,$minimal,$external) = 
                 &update_syllabus_env($cdom,$cnum,$courseenv,$env{'form.choice'},$uploaded,
@@ -1201,7 +1318,7 @@ sub save_changes {
             } else {
                 $external=$env{'form.externalsyllabus'};
                 $external =~ s/(`)//g;
-                my $putres =
+                $putres =
                     &Apache::lonnet::put('environment',{externalsyllabus=>$external},
                                          $cdom,$cnum);
                 if ($putres eq 'ok') {
@@ -1218,6 +1335,7 @@ sub save_changes {
                               '</div>';
                 }
             }
+            $is_ext = $external;
         } else {
             $output = '<div class="LC_error">'.
                       &mt('External URL not saved -- invalid URL.').
@@ -1233,34 +1351,16 @@ sub save_changes {
                 ($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 $exturl = &home_http_host($cdom,$cnum);
@@ -1281,7 +1381,7 @@ END
             } else {
                 $storehash{'externalsyllabus'} = '',
             }
-            my $putres =
+            $putres =
                 &Apache::lonnet::put('environment',\%storehash,$cdom,$cnum);
             if ($putres eq 'ok') {
                 &Apache::lonnet::make_public_indefinitely($url);
@@ -1346,62 +1446,116 @@ 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 ($uploaded) {
+        if ($uploaded || $env{'course.'.$env{'request.course.id'}.'.uploadedsyllabus'}) {
             push(@envkeys,'uploaded');
         }
-        if ($minimal) {
+        if ($minimal || $env{'course.'.$env{'request.course.id'}.'.minimalsyllabus'}) {
             push(@envkeys,'minimal');
         }
-        if ($external) {
+        if ($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 ($uploaded) {
+                if ($uploaded || $env{'course.'.$env{'request.course.id'}.'.uploadedsyllabus'}) {
                     push(@envkeys,'uploaded');
                 }
-            } elsif ($minimal) {
+            } elsif ($minimal || $env{'course.'.$env{'request.course.id'}.'.minimalsyllabus'}) {
                 push(@envkeys,'minimal');
             }
         } else {
-            if ($uploaded) {
+            if ($uploaded || $env{'course.'.$env{'request.course.id'}.'.uploadedsyllabus'}) {
                 push(@envkeys,'uploaded');
             }
-            if ($minimal) {
+            if ($minimal || $env{'course.'.$env{'request.course.id'}.'.minimalsyllabus'}) {
                 push(@envkeys,'minimal');
             }
         }
     } elsif ($saved eq 'file') {
-        if ($minimal) {
+        if ($minimal || $env{'course.'.$env{'request.course.id'}.'.minimalsyllabus'}) {
             push(@envkeys,'minimal');
         }
     } elsif ($saved eq 'minimal') {
-        if ($uploaded) {
+        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->{$key}) {
+            if ($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($uploaded);
@@ -1420,13 +1574,33 @@ sub update_syllabus_env {
     return ($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 $protocol.'://'.$home;
+        return $protocol.'://'.$hostname;
     }
     return;
 }
@@ -1533,11 +1707,12 @@ sub editfile_button {
 }
 
 sub editbutton_js {
-    my %lt = &Apache::lonlocal::texthash(
+    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[
@@ -1548,12 +1723,12 @@ sub editbutton_js {
                       if (document.getElementById('deleteuploaded_'+caller)) {
                           document.getElementById('deleteuploaded_'+caller).value=1;
                           if (caller == 'minimal') {
-                              if (confirm("$lt{'min'}"+"\\n"+"$lt{'noundo'}")) {
+                              if (confirm("$js_lt{'min'}"+"\\n"+"$js_lt{'noundo'}")) {
                                   document.syllabus.submit();
                               }
                           }
                           if (caller == 'file') {
-                              if (confirm("$lt{'file'}"+"\\n"+"$lt{'noundo'}")) {
+                              if (confirm("$js_lt{'file'}"+"\\n"+"$js_lt{'noundo'}")) {
                                   document.syllabus.submit();
                               }
                           }
@@ -1565,5 +1740,17 @@ sub editbutton_js {
 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__