/syllabus
+(which might also point at an external resource)
+from https:// to http:// where the the URL of the remote site
+specified in the resource itself is http://.
+
+This is done to avoid default mixed content blocking
+in Firefox 23 and later, when serving from Apache/SSL.
+
+=item $is_ext
+true if URL is for an external resource. Default true value
+is 1 (display in iframe, unless $uselink is true).
+If external resource is to be displayed in a tab,
+value of $is_ext will be tab, if to be displayed in a pop-up window,
+value of $is_ext will be window.
+=item $is_pdf
+true if URL is for a PDF (based on file extension).
+=item $exttool
+If URL is for an External Tool, will contain the target type: iframe, window or tab.
+=item $linktext
+
+optional. If URL is for an External Tool, and target type is window or tab,
+then the link text may be an option set in the course for each tool instance,
+or may be a default defined in the domain for all instances of the tool.
+
+=item $explanation
+
+optional. If URL is for an External Tool, and target type is window or tab,
+then the explanation is an option set in the course for each tool instance,
+or may be a default defined in the domain for all instances of the tool.
+
+=item $title
+
+optional. If wrapped item is a PDF, and $clientmobile is true,
+a link to a PDF is shown. The "title" will be displayed
+above the link, but if not provided as an arg, $env{'form.title'}
+will be used, otherwise, the filename will be displayed (unless
+hidden URL set for the resource).
+
+=item $width
+
+optional. If URL is for an External Tool, and target type is window,
+then a default width may have been defined in the domain for all instances of
+the tool. If so, that width will be used for the window opened (via a link)
+to launch the external tool. If the URL is for an External Resource, and
+$is_ext is window, then a default width (px) may have been defined in the current
+course for all external resource instances.
+
+=item $height
+
+optional. If URL is for an External Tool, and target type is window,
+then a default height may have been defined in the domain for all instances of
+the tool. If so, that height will be used for the window opened (via a link)
+to launch the external tool. If the URL is for an External Resource, and
+$is_ext is window, then a default height (px) may have been defined in the current
+course for all external resource instances.
+
+=item $reuse
+
+optional. If the URL is for an External Resource, and $is_ext is tab or window,
+then $reuse will be true if the same tab or window is to be reused for display
+of all external resource instances in a a course.
+
+=back
+
+Returns markup for the entire page.
+
+=item handler()
+
+Content handler for requests for: /adm/wrapper/...
+used for content to be displayed in an iframe, or launched in a separate tab
+or window via a link. The target URL is extracted from the requested URL, by
+removing the /adm/wrapper prefix.
+
+The target URL will typically be a PDF served from the current server, an
+external resource URL served from a different server, or an external tool
+(from an LTI Provider) launched from LON-CAPA (as LTI Consumer) and launched
+via a link.
+
+If the request included forceedit in the query string, and the requester has
+rights to modify course content, then the editor will be displayed to allow
+changes to be made to the resource (e.g., change the URL of the external resource,
+or change the setting for the external tool instance).
+
+If not in edit mode, then the wrapper() subroutine will be called to generate the
+standard LON-CAPA inline menu, and then either a link to launch a separate tab or
+window, or an iframe to display the content inline.
+
+=back
+
+=cut
500 Internal Server Error
Internal Server Error
The server encountered an internal error or
misconfiguration and was unable to complete
your request.
Please contact the server administrator at
root@localhost to inform them of the time this error occurred,
and the actions you performed just before this error.
More information about this error may be available
in the server error log.
.'/externallink.gif').'){kind=small}
';
+ unless ($reuse) {
+ my $resid;
+ if ($env{'request.course.id'}) {
+ unless (($is_supp) || ($env{'form.folderpath'} =~ /^supplemental/)) {
+ my $symb=&Apache::lonnet::symbread($r->uri);
+ if ($symb) {
+ my $navmap = Apache::lonnavmaps::navmap->new();
+ if (ref($navmap)) {
+ my $res = $navmap->getBySymb($symb);
+ if (ref($res)) {
+ $resid = $res->id;
+ $resid =~ s/\./_/g;
+ }
+ }
+ }
+ }
+ }
+ if ($resid eq '') {
+ $resid = substr(Digest::MD5::md5_hex(Digest::MD5::md5_hex(time(). {}. rand(). $$)), 0, 8);
+ }
+ &js_escape(\$resid);
+ $target .= $resid;
+ }
+ }
+ $output .= <<"ENDLINK";
+
+