--- rat/lonpage.pm	2020/07/18 21:49:35	1.111.2.10.2.2
+++ rat/lonpage.pm	2022/10/04 20:39:57	1.142
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Page Handler
 #
-# $Id: lonpage.pm,v 1.111.2.10.2.2 2020/07/18 21:49:35 raeburn Exp $
+# $Id: lonpage.pm,v 1.142 2022/10/04 20:39:57 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -102,7 +102,9 @@ sub tracetable {
             } else {
                 $sofar++;
                 if ($hash{'src_'.$rid}) {
-                    my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$rid});
+                    my ($mapid,$resid)=split(/\./,$rid);
+                    my $symb = &Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid,$hash{'src_'.$rid});
+                    my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$rid},$symb);
                     if (($brepriv eq '2') || ($brepriv eq 'F')) {
                         if (defined($rows[$sofar])) {
                             $rows[$sofar].='&'.$rid;
@@ -202,7 +204,7 @@ sub handler {
                   my ($pagesymb,$courseid,$domain,$name)=&Apache::lonnet::whichuser();
                   unless ($pagesymb) {
                       $pagesymb=&Apache::lonnet::symbread($requrl);
-                  }                  
+                  }
                   if ($pagesymb && ($courseid ne '') && ($domain ne '') && ($name ne '')) {
                       my %times=&Apache::lonnet::get('firstaccesstimes',
                                                      [$courseid."\0".$pagesymb],
@@ -276,6 +278,8 @@ sub handler {
                   my %ssilink=();
                   my %ssivlink=();
                   my %ssialink=();
+                  my %cssrefs=();
+                  my %httpref=();
      
                   my %cellemb=();
                   my %cellexternal=();
@@ -379,7 +383,7 @@ ENDEXT
                           } elsif ($cellemb{$_} eq 'ssi') {
 # --------------------------------------------------------- This is an SSI cell
 			      my $prefix='p_'.$_.'_';
-                              my $idprefix='p_'.join('_',($mapid,$resid,''));
+                              my $idprefix= 'p_'.join('_',($mapid,$resid,''));
                               my %posthash=('request.prefix' => $prefix,
 					    'LONCAPA_INTERNAL_no_discussion' => 'true',
 					    'symb' => $symb);
@@ -417,9 +421,6 @@ ENDEXT
 			      } elsif ($env{'form.'.$prefix.'markaccess'} eq 'yes') {
 		                  $posthash{'markaccess'} = $env{'form.'.$prefix.'markaccess'};
 		              }
-                              if ($env{'environment.remote'} eq 'on') {
-                                  $posthash{'inhibitmenu'} = 'yes';
-                              }
                               my $output=Apache::lonnet::ssi($src,%posthash);
 			      $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
                               if (($target eq 'tex') || ($target eq 'tex_answer')) {
@@ -441,6 +442,7 @@ ENDEXT
                               my $bodydef=0;
                               my $thisxml=0;
                               my @rlinks=();
+                              my @css_hrefs=();
                               if ($output=~/\?xml/) {
                                  $isxml=1;
                                  $thisxml=1;
@@ -483,6 +485,14 @@ ENDEXT
                                            ($bodydef==0)) {
 				      $allscript.="\n\n"
                                                 .$parser->get_text('/script');
+                                  } elsif (($token->[1] eq 'link') &&
+                                           ($bodydef==0)) {
+                                      if (($token->[2]->{'href'} !~ m{^/adm/}) &&
+                                          ($token->[2]->{'rel'} eq 'stylesheet')) {
+                                              $css_hrefs[$#css_hrefs+1]=
+                                                  $token->[2]->{'href'};
+
+                                      }
                                   }
 			        }
 			      }
@@ -645,19 +655,41 @@ ENDEXT
                      $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
 				  }
 			      }
+                              foreach my $css_href (@css_hrefs) {
+                                  next if ($css_href eq '');
+                                  unless ($css_href =~ m{https?://}) {
+                                      my $proburl = &Apache::lonnet::clutter($plainsrc);
+                                      unless ($css_href =~ m{^/}) {
+                                          my $probdir = $proburl;
+                                          $probdir=~s/\/[^\/]*$//;
+                                          $css_href = &Apache::lonnet::hreflocation($probdir,$css_href);
+                                      }
+                                      if ($css_href =~ m{^/(res|uploaded)/}) {
+                                          unless (($env{'httpref.'.$css_href}) ||
+                                                  ($httpref{'httpref.'.$css_href}) ||
+                                                  (&Apache::lonnet::is_on_map($css_href))) {
+                                              if ($env{'httpref.'.$proburl}) {
+                                                  $proburl = $env{'httpref.'.$proburl};
+                                              }
+                                              $httpref{'httpref.'.$css_href} = $proburl;
+                                          }
+                                      }
+                                  }
+                                  $cssrefs{$css_href} = 1;
+                              }
 # -------------------------------------------------- Deal with Applet codebases
   $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
 			      $ssibody{$_}=$output;
 # ---------------------------------------------------------------- End SSI cell
                           }
                       }
-                     } 
+                     }
                   }
                   unless ($contents) {
                       &Apache::loncommon::content_type($r,'text/html');
                       $r->send_http_header;
                       $r->print(&Apache::loncommon::start_page(undef,undef,
-							       {'force_register' => 1}));
+							       {'force_register' => 1,}));
                       $r->print(&mt('This page is either empty or it only contains resources that are currently hidden').'. ');
                       $r->print('<br /><br />'.&mt('Please use the LON-CAPA navigation arrows to move to another item in the course').
 				&Apache::loncommon::end_page());
@@ -763,6 +795,21 @@ ENDEXT
                                   }
                               }
                           }
+                          if (keys(%cssrefs)) {
+                              my $links;
+                              if (keys(%cssrefs)) {
+                                  foreach my $css_href (keys(%cssrefs)) {
+                                      next unless ($css_href =~ m{^(/res/|/uploaded/|https?://)});
+                                      $links .= '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />'."\n";
+                                  }
+                              }
+                              if ($links) {
+                                  if (keys(%httpref)) {
+                                      &Apache::lonnet::appenv(\%httpref);
+                                  }
+                                  $allscript .= "\n$links";
+                              }
+                          }
 # ------------------------------------------------------------------ Start body
 			  $r->print(&Apache::loncommon::start_page(undef,$allscript,
 								   {'force_register' => 1,
@@ -918,9 +965,30 @@ ENDEXT
                   }                  
 # ------------------------------------------------------------- End render page
               } else {
-                  &Apache::loncommon::content_type($r,'text/html');
-                  $r->send_http_header;
-                  &Apache::lonsequence::viewmap($r,$requrl);
+                  if ($hash{'map_type_'.$hash{'map_pc_'.$requrl}} eq 'none') {
+                      &Apache::loncommon::content_type($r,'text/html');
+                      $r->send_http_header;
+                      $r->print(&Apache::loncommon::start_page(undef,undef,
+                                                               {'force_register' => 1,}));
+                      my $crstype = &Apache::loncommon::course_type();
+                      if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
+                          $r->print('<span class="LC_warning">'.&mt('Missing composite page file.').'</span><br />'.
+                                    &mt("You may want to use the $crstype Editor to remove this item."));
+                      } else {
+                          if ($crstype eq 'Placement') {
+                              $r->print('<span class="LC_warning">'.&mt('Missing page').'</span>');
+                          } else {
+                              $r->print('<span class="LC_info">'.
+                                        &mt('This resource was unavailable when your '.lc($crstype).' session was loaded').'<br />'.
+                                        &mt("Please use 'Contents' to list items available in the $crstype.").'</span>');
+                          }
+                      }
+                      $r->print(&Apache::loncommon::end_page());
+                  } else {
+                      &Apache::loncommon::content_type($r,'text/html');
+                      $r->send_http_header;
+                      &Apache::lonsequence::viewmap($r,$requrl);
+                  }
               }
 # ------------------------------------------------------------------ Untie hash
               unless (untie(%hash)) {
@@ -946,16 +1014,18 @@ sub get_buttons {
     my $symb=&Apache::lonnet::encode_symb($hash->{'map_id_'.$mapid},
 					  $resid,
 					  $hash->{'src_'.$rid});
-    my $aname;
+    my ($aname,$shownsymb);
     if (($hash->{'encrypted_'.$rid}) && (!$env{'request.role.adv'})) {
         $aname = 'LC_'.$rid;
+        $shownsymb = &Apache::lonenc::encrypted($symb);
     } else {
-        my $shownsymb = $symb;
+        $shownsymb = $symb;
+        my $dispsymb = $symb;
         if ($symb =~ /\#([^\#]+)$/) {
             my $escan = &escape('#');
-            $shownsymb =~ s/#([^\#]+)$/$escan$1/;
+            $dispsymb =~ s/#([^\#]+)$/$escan$1/;
         }
-        $aname = &escape($shownsymb);
+        $aname = &escape($dispsymb);
     }
     my $metainfo = '<a name="'.$aname.'"></a>';
     unless ($env{'request.role.adv'}) {
@@ -995,7 +1065,7 @@ sub get_buttons {
     if (($hash->{'src_'.$rid}=~/$LONCAPA::assess_re/) &&
 	($hash->{'src_'.$rid} !~ m-^/uploaded/-)) {
 
-        if ((&Apache::lonnet::allowed('mgr',$crs_sec)) ||
+	if ((&Apache::lonnet::allowed('mgr',$crs_sec)) ||
             (&Apache::lonnet::allowed('vgr',$crs_sec))) {
 	    $metainfo.=
 		'<a href="/adm/grades?symb='.&escape($symb).
@@ -1008,15 +1078,15 @@ sub get_buttons {
         }
         if (&Apache::lonnet::allowed('mgr',$crs_sec)) {
             $metainfo.=
-                '<a href="/adm/grades?symb='.&escape($symb).
+		'<a href="/adm/grades?symb='.&escape($symb).
 #               '&command=gradingmenu" target="LONcatInfo">'.
 		'&command=gradingmenu">'.
                 '<img src="/res/adm/pages/pgrd.png" class="LC_icon"'.
                 ' alt="'.&mt('Content Grades').'"'.
                 ' title="'.&mt('Content Grades').'" />'.
-                '</a>';
-        }
-        if ((&Apache::lonnet::allowed('opa',$crs_sec)) ||
+		'</a>';
+	}
+	if ((&Apache::lonnet::allowed('opa',$crs_sec)) ||
             (&Apache::lonnet::allowed('vpa',$crs_sec))) {
 	    $metainfo.=
 		'<a href="/adm/parmset?symb='.&escape($symb).
@@ -1038,8 +1108,8 @@ sub get_buttons {
                 &Apache::lonnet::can_edit_resource($file,$cnum,$cdom,$hash->{'src_'.$rid},$symb);
             if ($cfile ne '') {
                 my $jscall = &Apache::lonhtmlcommon::jump_to_editres($cfile,$home,$switchserver,
-                                                                     $forceedit,1,$symb,undef,
-                                                                     &escape($env{'form.title'}),
+                                                                     $forceedit,1,$symb,$shownsymb,
+                                                                     undef,&escape($env{'form.title'}),
                                                                      $hostname);
                 if ($jscall) {
                     $editbutton = 1;
@@ -1110,7 +1180,7 @@ sub add_countdown_timer {
             $donebuttontext = &mt('Done');
             $type = 'map';
         }
-        $donebutton =
+        $donebutton = 
             &Apache::lonmenu::done_button_js($type,'','',$proctor,$donebuttontext);
     }
     unless ($env{'environment.icons'} eq 'iconsonly') {