File:  [LON-CAPA] / loncom / interface / lonhelpmenu.pm
Revision 1.49: download - view: text, annotated - select for diffs
Mon May 30 12:31:06 2022 UTC (23 months, 2 weeks ago) by raeburn
Branches: MAIN
CVS tags: version_2_12_X, version_2_11_4_msu, HEAD
- Bug 6907
  Stop deep-linked items escaping iframe context.

    1: # The LearningOnline Network with CAPA
    2: # generate frame-based help system
    3: #
    4: # $Id: lonhelpmenu.pm,v 1.49 2022/05/30 12:31:06 raeburn Exp $
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: #
   26: # http://www.lon-capa.org/
   27: #
   28: 
   29: package Apache::lonhelpmenu;
   30: 
   31: use strict;
   32: use lib qw(/home/httpd/lib/perl);
   33: use Apache::Constants qw(:common);
   34: use Apache::loncommon();
   35: use Apache::lonlocal;
   36: use Apache::lonnet;
   37: use lib '/home/httpd/lib/perl/';
   38: use LONCAPA;
   39: use HTML::Entities();
   40: 
   41: sub handler {
   42:     my ($r) = @_;
   43:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['page','faq','bug','topic','component_help','origurl','stayonpage']);
   44:     &Apache::loncommon::content_type($r,'text/html');
   45:     $r->send_http_header;
   46: 
   47:     if ($r->header_only) {
   48:         return OK;
   49:     }
   50:     my $faq = $env{'form.faq'};
   51:     my $bug = $env{'form.bug'};
   52:     my $topic = $env{'form.topic'};
   53:     my $component_help = $env{'form.component_help'};
   54:     my $origurl = $env{'form.origurl'};
   55:     my $stayOnPage = $env{'form.stayonpage'};
   56:     my $component_url = $component_help;
   57:     if ($component_url) {
   58:         $component_url = '/adm/help/'.$component_url.'.hlp';
   59:     }
   60:     my $bugurl = $Apache::lonnet::perlvar{'BugzillaHost'};
   61:     $bugurl .= 'enter_bug.cgi?product=LON-CAPA&bug_file_loc='.$origurl;
   62:     if ($bug) {
   63:         $bugurl .= '&component='.$bug;
   64:     }
   65:     my $faqbaseurl = $Apache::lonnet::perlvar{'FAQHost'};
   66:     my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
   67:     $origurl = &unescape($origurl);
   68:     my $defdom;
   69:     if ($env{'request.course.id'}) {
   70:         $defdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
   71:     } elsif ($env{'request.role.domain'}) {
   72:         $defdom = $env{'request.role.domain'};
   73:     } else {
   74:         $defdom = &Apache::lonnet::default_login_domain();
   75:     }
   76:     my $requestmail = &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
   77:                                                                $defdom,$origmail);
   78:     if ($env{'form.page'} eq 'banner') {
   79:         &display_help_banner($r,$faq,$bug,$topic,$component_url,$origurl,$bugurl,$faqbaseurl,$requestmail,$stayOnPage);
   80:     } elsif ($env{'form.page'} eq 'body') {
   81:         &display_help_mainpage($r,$faq,$bug,$topic,$component_url,$origurl,$bugurl,$faqbaseurl,$requestmail,$stayOnPage);
   82:     }
   83:     return OK;
   84: }
   85: 
   86: sub display_help_banner {
   87:     my ($r,$faq,$bug,$topic,$component_url,$origurl,$bugurl,$faqbaseurl,$requestmail,$stayOnPage) = @_;
   88:     my $dom = $env{'request.role.domain'};
   89:     my $scripttag = '';
   90:     if ($requestmail) {
   91:         my $displayurl = &escape($origurl);
   92:         $scripttag = (<<"SCRIPT_ONE");
   93: <script type="text/javascript">
   94: // <![CDATA[
   95: function gohelpdesk() {
   96:     var actiontype = null;
   97:     try {
   98:         actiontype = parent.bodyframe.document.logproblem.action.value;
   99:     }
  100:     catch(error) {
  101:         parent.bodyframe.location = "/adm/support?origurl=$displayurl";
  102:         return;
  103:     }
  104:     if (actiontype) {
  105:         var loc = parent.bodyframe.location.href;
  106:         if (loc.indexOf("/adm/support") > -1) {
  107:             if (parent.bodyframe.document.logproblem.action.value == "process") {
  108:                 if (validmail(parent.bodyframe.document.logproblem.email) == false) {
  109:                     alert("The e-mail address you entered: "+parent.bodyframe.document.logproblem.email.value+" is not a valid e-mail address.");
  110:                     return;
  111:                 }
  112:                 parent.bodyframe.document.logproblem.submit();
  113:                 return;
  114:             }
  115:         }
  116:         parent.bodyframe.location = "/adm/support?origurl=$displayurl";
  117:         return;
  118:     }
  119: }
  120: 
  121: SCRIPT_ONE
  122:         $scripttag .= (<<'SCRIPT_TWO');
  123: function validmail(field) {
  124:     var str = field.value;
  125:     if (window.RegExp) {
  126:         var reg1str = "(@.*@)|(\\.\\.)|(@\\.)|(\\.@)|(^\\.)";
  127:         var reg2str = "^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$"; //"
  128:         var reg1 = new RegExp(reg1str);
  129:         var reg2 = new RegExp(reg2str);
  130:         if (!reg1.test(str) && reg2.test(str)) {
  131:             return true;
  132:         }
  133:         return false;
  134:     }
  135:     else
  136:     {
  137: 
  138:         if(str.indexOf("@") >= 0) {
  139:             return true;
  140:         }
  141:         return false;
  142:     }
  143: }
  144: 
  145: // ]]>
  146: </script>
  147: SCRIPT_TWO
  148:     }
  149: 
  150:     if ($stayOnPage) {
  151: 	$r->print(&Apache::loncommon::start_page('Help',$scripttag,
  152: 					         {'no_secondary_menu' => 1,}));
  153:     } else {
  154:         $r->print(&Apache::loncommon::start_page('Help',$scripttag,
  155:                                                  {'only_body' => 1,}));
  156:     }
  157:     my $menu = &helpmenu_items($dom,$faq,$bug,$topic,$component_url,$origurl,$bugurl,$faqbaseurl,$requestmail,$stayOnPage);
  158:     if ($menu) {
  159:         $r->print("<ul id=\"LC_secondary_menu\">$menu</ul>");
  160:     }
  161:     if ($stayOnPage && $env{'user.adv'}) {
  162:         $r->print('<br />');
  163:     } 
  164:     $r->print(&Apache::loncommon::end_page());
  165: }
  166: 
  167: sub helpmenu_items {
  168:     my ($dom,$faq,$bug,$topic,$component_url,$origurl,$bugurl,$faqbaseurl,$requestmail,$stayOnPage) = @_;
  169:     my $location=&Apache::loncommon::lonhttpdurl("/adm");
  170:     my $general_help = &Apache::loncommon::general_help();
  171:     my %helpconfig = &Apache::lonnet::get_dom('configuration',['helpsettings'],$dom);
  172:     my %lt = &Apache::lonlocal::texthash(
  173:                                             general       => 'General help',
  174:                                             component     => 'Topic help',
  175:                                             faq           => 'FAQ',
  176:                                             helpdesk      => 'Ask helpdesk',
  177:                                             bugs          => 'Report a bug',
  178:                                             manuals_web   => 'Online manuals',
  179:                                             manuals_pdf   => 'Printable manuals',
  180:                                             lastloc       => 'Go back',
  181:                                             close         => 'Close',
  182:                                          );
  183:     my ($target,$bugs_target);
  184:     if ((($env{'request.lti.login'}) && ($env{'request.lti.target'} eq 'iframe')) ||
  185:         (($env{'request.deeplink.login'}) && ($env{'request.deeplink.target'} eq '_self'))) {
  186:         $target = '_parent';
  187:         $bugs_target = '_blank';
  188:     } else {
  189:         $target = '_top';
  190:         $bugs_target = '_top';
  191:     }
  192:     my %items = (
  193:                     general => {
  194:                                  href => '/adm/help/'.$general_help.'.hlp',
  195:                                  img  => $location.'/help/help.png',
  196:                                  alt  => $lt{'general'},
  197:                                  text => $lt{'general'},
  198:                                },
  199:                     component => {
  200:                                    href => $component_url,
  201:                                    img  => $location.'/help/help.png',
  202:                                    alt  => $lt{'component'},
  203:                                    text => $topic,
  204:                                  },
  205:                     faq      => {
  206:                                    href => $faqbaseurl.'fom/cache/'.$faq.'.html',
  207:                                    img  => $location.'/lonMisc/smallFAQ.gif',
  208:                                    alt  => $lt{'faq'},
  209:                                    text => $lt{'faq'},                                   
  210:                                  },
  211:                     helpdesk => {
  212:                                    href    => '#',
  213:                                    onclick => 'gohelpdesk()',
  214:                                    img  => $location.'/lonIcons/helpdesk.gif',    
  215:                                    alt  => $lt{'helpdesk'},
  216:                                    text => $lt{'helpdesk'},
  217:                                 },
  218:                     bugs     => {
  219:                                    href => $bugurl,
  220:                                    img  => $location.'/lonMisc/smallBug.gif', 
  221:                                    alt  => $lt{'bugs'},
  222:                                    text => $lt{'bugs'},
  223:                                    target => $bugs_target,
  224:                                 },
  225:                     manuals_web  => {
  226:                                        href => '',
  227:                                        img  => $location.'/lonIcons/html.gif',
  228:                                        alt  => $lt{'manuals_web'},
  229:                                        text => $lt{'manuals_web'},
  230:                                     },
  231:                     manuals_pdf  => {
  232:                                        href => '',
  233:                                        img  => $location.'/lonIcons/pdf.gif',
  234:                                        alt  => $lt{'manuals_pdf'},
  235:                                        text => $lt{'manuals_pdf'},
  236:                                     },
  237:                     lastloc  => {
  238:                                    href   => &HTML::Entities::encode($origurl,'"&<>'),
  239:                                    img    => '/res/adm/pages/tolastloc.png',
  240:                                    alt    => $lt{'lastloc'},
  241:                                    text   => $lt{'lastloc'},
  242:                                    target => $target,
  243:                                 },
  244:                     close    => {
  245:                                    href   => 'javascript:window.close()',
  246:                                    img    => $location.'/lonIcons/close.gif',
  247:                                    alt    => $lt{'close'},
  248:                                    text   => $lt{'close'},
  249:                                    target => $target,
  250:                                 },
  251:     );
  252:     my %help_submenu = (
  253:                            manuals_web => [
  254:                                             ['/adm/help/course.manual.access.hlp','Course Coordination','course'],
  255:                                             ['/adm/help/author.manual.access.hlp','Authoring','author'],
  256:                                           ],
  257:                            manuals_pdf => [
  258:                                             ['/adm/help/course.manual.pdf','Course Coordination','course'],
  259:                                             ['/adm/help/author.manual.pdf','Authoring','author'],
  260:                                           ],
  261:                        );
  262:     my @order = ('general');
  263:     if ($component_url) {
  264:         push(@order,'component');
  265:     }
  266:     if ($requestmail) {
  267:         push(@order,'helpdesk');
  268:     }
  269:     if ($env{'user.adv'} && $faq) {
  270:         push(@order,'faq');
  271:     }
  272:     if (($env{'user.adv'}) && (($helpconfig{'helpsettings'}{'submitbugs'} eq '1') || ($helpconfig{'helpsettings'}{'submitbugs'} eq ''))) {
  273:         push(@order,'bugs');
  274:     }
  275:     if ($stayOnPage) {
  276:         push(@order,('manuals_web','manuals_pdf','lastloc'));
  277:     } else {
  278:         push(@order,'close');
  279:     }
  280:     my $menu;
  281:     foreach my $title (@order) {
  282:         my $menuitem = $items{$title};
  283:         next unless (ref($menuitem) eq 'HASH');
  284:         if (defined($help_submenu{$title})) {
  285:             my ($link,$target);
  286:             if ($menuitem->{href} ne '') {
  287:                 $link = $menuitem->{href};
  288:                 $target = 'bodyframe';
  289:             } else {
  290:                 $link = '#';
  291:             }
  292:             my @helpsub;
  293:             if (ref($help_submenu{$title}) eq 'ARRAY') {
  294:                 foreach my $item (@{$help_submenu{$title}}) {
  295:                     if (ref($item) eq 'ARRAY') {
  296:                         if (($item->[2] eq 'course') || ($item->[2] eq 'author')) {
  297:                             next unless($env{'user.adv'});
  298:                         }
  299:                         push(@helpsub,$item);
  300:                     }
  301:                 }
  302:                 if (@helpsub > 0) {
  303:                     my $img;
  304:                     if ($menuitem->{img}) {
  305:                         $img = '<img class="LC_noBorder" style="vertical-align:top" src="'.$menuitem->{img}.'" alt="'.$menuitem->{alt}.'" />';
  306:                     }
  307:                     $menu .= &create_submenu($link,$img,$target,$menuitem->{text},\@helpsub,1);
  308:                 } elsif ($link ne '#') {
  309:                     $menu .= '<li><a href="'.$link.'" target="'.$target.'">'.$menuitem->{text}.'</a></li>';
  310:                 }
  311:             }
  312:         } else {
  313:             $menu .= &build_menuitem($menuitem);
  314:         }
  315:     }
  316:     return $menu;
  317: }
  318: 
  319: sub build_menuitem {
  320:     my ($menuitem) = @_;
  321:     return '' unless(ref($menuitem) eq 'HASH');
  322:     my $link;
  323:     if ($menuitem->{img}) {
  324:         $link = '<img style="vertical-align:top" class="LC_noBorder" src="'.$menuitem->{img}.'" alt="'.$menuitem->{alt}.'" />&nbsp;';
  325:     }
  326:     if ($menuitem->{text}) {
  327:         $link .= $menuitem->{text};
  328:     }
  329:     my $target;
  330:     if ($menuitem->{target}) {
  331:         $target = $menuitem->{target};
  332:     } else {
  333:         $target = 'bodyframe';
  334:     }
  335:     my $onclick;
  336:     if ($menuitem->{onclick}) {
  337:         $onclick = ' onclick="'.$menuitem->{onclick}.';return false"';
  338:     }
  339:     return '<li><a href="'.$menuitem->{href}.'" target="'.$target.'"'.$onclick.'>'.$link.'</a></li>',
  340: }
  341: 
  342: sub create_submenu {
  343:     my ($link,$img,$target,$title,$submenu,$translate) = @_;
  344:     return unless (ref($submenu) eq 'ARRAY');
  345:     my $disptarget;
  346:     if ($target ne '') {
  347:         $disptarget = ' target="'.$target.'"';
  348:     }
  349:     my $menu = '<li class="LC_hoverable">'.$img.
  350:                '<a href="'.$link.'"'.$disptarget.'>'.
  351:                '<span class="LC_nobreak">'.$title.
  352:                '<span class="LC_fontsize_small" style="font-weight:normal;">'.
  353:                ' &#9660;</span></span></a>'.
  354:                '<ul>';
  355:     my $count = 0;
  356:     my $numsub = scalar(@{$submenu});
  357:     foreach my $item (@{$submenu}) {
  358:         $count ++;
  359:         if (ref($item) eq 'ARRAY') {
  360:             my $href = $item->[0];
  361:             my $borderbot;
  362:             if ($count == $numsub) {
  363:                 $borderbot = 'border-bottom:1px solid black;';
  364:             }
  365:             $menu .= '<li style="margin:0;padding:0;'.
  366:                      $borderbot.'"><a href="'.$href.'" target="bodyframe">';
  367:             if ($translate) {
  368:                 $menu .= &mt($item->[1]);
  369:             } else {
  370:                 $menu .= $item->[1];
  371:             }
  372:             $menu .= '</a></li>';
  373:         }
  374:     }
  375:     $menu .= '</ul></li>';
  376:     return $menu;
  377: }
  378: 
  379: sub display_help_mainpage {
  380:     my ($r,$faq,$bug,$topic,$component_url,$origurl,$bugurl,$faqbaseurl,$requestmail,$stayOnPage) = @_;
  381: 
  382:     my %lt =&Apache::lonlocal::texthash(
  383:         'topp' => 'Topic Page',
  384:         'chen' => 'Choose an entry below to go directly to a relevant help page',
  385:         'orto' => 'or to submit a help request to the LON-CAPA support staff at your institution.',
  386:         'vthp' => 'Visit the help page for ',
  387:         'disp' => 'Display the page in the inline help system that covers this topic.',
  388:         'crac' => 'Create an account for yourself in the LON-CAPA Bugzilla tracking system, if you wish to report bugs you have encountered in the LON-CAPA software, or if you have suggestions for improvements in LON-CAPA.',
  389:         'cont' => 'Contact the LON-CAPA support team',
  390:         'suhr' => 'Submit a help request to the team responsible for LON-CAPA support at this institution.',
  391:         'faqo' => 'FAQ-O-Matic Help system',
  392:         'tfaq' => 'The FAQ-O-Matic is a compendium of answers provided to common questions asked by users of LON-CAPA over the past couple of years.',
  393:         'lbug' => 'LON-CAPA Bugzilla bug/feature request tracking system',
  394:         'crea' => 'Create an account for yourself in the LON-CAPA Bugzilla tracking system, if you wish to report bugs you have encountered in the LON-CAPA software,or if you have suggestions for improvements in LON-CAPA.',
  395:         'suim' => ' Suggested improvements may include additional functionality, improved usability, or changes to wording used in LON-CAPA pages, including the embedded help system.'
  396:     );
  397: 
  398:     if ($stayOnPage) {
  399: 	$r->print(&Apache::loncommon::start_page('Help Content',undef,
  400: 				                 {'no_secondary_menu' => 1,}));
  401:     } else {
  402:         $r->print(&Apache::loncommon::start_page('Help Content',undef,
  403:                                                  {'only_body' => 1,}));
  404:     }
  405:     my $target = '_top';
  406:     if ((($env{'request.lti.login'}) && ($env{'request.lti.target'} eq 'iframe')) ||
  407:         (($env{'request.deeplink.login'}) && ($env{'request.deeplink.target'} eq '_self'))) {
  408:         $target = '_parent';
  409:     }
  410:     if ($stayOnPage) {
  411:         $r->print('<div>');
  412:     }
  413:     $r->print('<b>'.$lt{'chen'});
  414:     if ($requestmail) {
  415:         $r->print(', '.$lt{'orto'});
  416:     } else {
  417:         $r->print(".");
  418:     }
  419:     $r->print('</b>');
  420:     if ($topic) {
  421:         if ( ($component_url) || ($env{'user.adv'}) ) {
  422:             if ($component_url) {
  423:                 $r->print("
  424:           <ul>
  425:            <li><a href=\"$component_url\">$lt{'vthp'} $topic</a></li>
  426:           </ul>
  427:           <p>$lt{'disp'}</p>
  428:                 ");
  429:             }
  430:         }
  431:     }
  432:     if ($requestmail) {
  433:         $r->print("
  434:           <ul>
  435:            <li><a href=\"/adm/support?origurl=".&escape($origurl)."\">$lt{'cont'}</a></li>
  436:           </ul>
  437:           <p>$lt{'suhr'}");
  438:          unless ($env{'user.adv'}) {
  439:              $r->print('<br />'.
  440:                        &mt('[_1]Note[_2]: questions about course content should not be directed to the support team, but instead should be sent to the course instructor.'). 
  441:                        ' '.
  442:                        &mt('This can be done by clicking the [_1]Communicate[_2] link or the "Send Feedback" link when viewing a content page.',
  443:                           '<a href="/adm/communicate" target="'.$target.'">','</a>')); 
  444:          }
  445:          $r->print("</p>");
  446:     }
  447:     if ($faqbaseurl && $env{'user.adv'}) {
  448:         if (!defined($faq) ||$faq eq '') {
  449:             $faq = '1';
  450:         }
  451:         $r->print("
  452:           <ul>
  453:            <li><a href=\"$faqbaseurl/fom/cache/$faq.html\">$lt{'faqo'}</a></li>
  454:           </ul>
  455:           <p>$lt{'tfaq'}</p>
  456:         ");
  457:     }
  458:     if ($bugurl && $env{'user.adv'}) {
  459:         $bugurl .= '?'.$bug;
  460:         $r->print("
  461:           <ul>
  462:            <li><a href=\"$bugurl\">$lt{'lbug'}</a></li>
  463:           </ul>
  464:           <p>$lt{'crea'} $lt{'suim'}</p>
  465:         ");
  466:     }
  467:     if ($stayOnPage) {
  468:         $r->print('</div>');
  469:     }
  470:     $r->print(&Apache::loncommon::end_page());
  471: }
  472: 
  473: 1;

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