mod/wiki/view.php

   1 <?php  // $Id$
   2 /// Extended by Michael Schneider
   3 /// This page prints a particular instance of wiki
   4
   5     global $CFG,$USER;
   6
   7     require_once("../../config.php");
   8     require_once("lib.php");
   9     #require_once("$CFG->dirroot/course/lib.php"); // For side-blocks
  10     require_once($CFG->libdir . '/ajax/ajaxlib.php');
  11     require_js(array('yui_yahoo', 'yui_event', 'yui_connection'));
  12
  13     $ewiki_action = optional_param('ewiki_action', '', PARAM_ALPHA);     // Action on Wiki-Page
  14     $id           = optional_param('id', 0, PARAM_INT);                  // Course Module ID, or
  15     $wid          = optional_param('wid', 0, PARAM_INT);                 // Wiki ID
  16     $page         = optional_param('page', false);                       // Wiki Page Name
  17     $q            = optional_param('q',"", PARAM_PATH);                  // Search Context
  18     $userid       = optional_param('userid', 0, PARAM_INT);              // User wiki.
  19     $groupid      = optional_param('groupid', 0, PARAM_INT);             // Group wiki.
  20     $canceledit   = optional_param('canceledit','', PARAM_ALPHA);        // Editing has been cancelled
  21     $cacheme      = optional_param('allowcache', 1, PARAM_INT);          // Set this to 0 to try and disable page caching.
  22
  23     // Only want to add edit log entries if we have made some changes ie submitted a form
  24     $editsave = optional_param('thankyou', '');
  25
  26     if($page) {
  27         // Split page command into action and page
  28         $actions = explode('/', $page,2);
  29         if(count($actions)==2) {
  30             $pagename=$actions[1];
  31         } else {
  32             $pagename=$actions[0];
  33         }
  34     } else {
  35         $actions=array('');
  36         $pagename='';
  37     }
  38
  39     if ($id) {
  40         if (! $cm = get_coursemodule_from_id('wiki', $id)) {
  41             error("Course Module ID was incorrect");
  42         }
  43
  44         if (! $course = get_record("course", "id", $cm->course)) {
  45             error("Course is misconfigured");
  46         }
  47
  48         if (! $wiki = get_record("wiki", "id", $cm->instance)) {
  49             error("Course module is incorrect");
  50         }
  51
  52     } else {
  53         if (! $wiki = get_record("wiki", "id", $wid)) {
  54             error("Course module is incorrect");
  55         }
  56         if (! $course = get_record("course", "id", $wiki->course)) {
  57             error("Course is misconfigured");
  58         }
  59         if (! $cm = get_coursemodule_from_instance("wiki", $wiki->id, $course->id)) {
  60             error("Course Module ID was incorrect");
  61         }
  62     }
  63
  64     require_course_login($course, true, $cm);
  65
  66     /// Add the course module info to the wiki object, for easy access.
  67     $wiki->groupmode = $cm->groupmode;
  68     $wiki->groupingid = $cm->groupingid;
  69     $wiki->groupmembersonly = $cm->groupmembersonly;
  70     $wiki->cmid = $cm->id;
  71
  72     /// Default format:
  73     $moodle_format=FORMAT_MOODLE;
  74
  75 /// Globally disable CamelCase, if the option is selected for this wiki.
  76     $moodle_disable_camel_case = ($wiki->disablecamelcase == 1);
  77
  78     if (($wiki_entry = wiki_get_default_entry($wiki, $course, $userid, $groupid))) {
  79         // OK, now we know the entry ID, we can do lock etc.
  80
  81         // If true, we are 'really' on an editing page, not just on edit/something
  82         $reallyedit=$actions[0]=='edit' && !$canceledit && !$editsave;
  83
  84         // Remove lock when we go to another wiki page (such as the cancel page)
  85         if(!$reallyedit) {
  86             wiki_release_lock($wiki_entry->id,$pagename);
  87         } else if(array_key_exists('content',$_POST)) {
  88             // Do not allow blank content because it causes problems (the wiki decides
  89             // the page should automatically go into edit mode, but Moodle doesn't realise
  90             // this and filters out the JS)
  91             if($_POST['content']=='') {
  92                 $_POST['content']="\n";
  93                 $_REQUEST['content']="\n";
  94             }
  95
  96             // We must have the edit lock in order to be permitted to save
  97             list($ok,$lock)=wiki_obtain_lock($wiki_entry->id,$pagename);
  98             if(!$ok) {
  99                 $strsavenolock=get_string('savenolock','wiki');
 100                 error($strsavenolock,$CFG->wwwroot.'/mod/wiki/view.php?id='.$cm->id.'&page=view/'.urlencode($pagename));
 101             }
 102         }
 103
 104 ///     ################# EWIKI Part ###########################
 105 ///     The wiki_entry->pagename is set to the specified value of the wiki,
 106 ///     or the default value in the 'lang' file if the specified value was empty.
 107         define("EWIKI_PAGE_INDEX",$wiki_entry->pagename);
 108
 109         /// If the page has a ' in it, it may have slashes added to it. Remove them if it does.
 110         $page = ($page === false) ?  stripslashes(EWIKI_PAGE_INDEX) : stripslashes($page);
 111
 112 ///     # Prevent ewiki getting id as PageID...
 113         unset($_REQUEST["id"]);
 114         unset($_GET["id"]);
 115         unset($_POST["id"]);
 116         unset($_POST["id"]);
 117         unset($_SERVER["QUERY_STRING"]);
 118         if (isset($HTTP_GET_VARS)) {
 119             unset($HTTP_GET_VARS["id"]);
 120         }
 121         if (isset($HTTP_POST_VARS)) {
 122             unset($HTTP_POST_VARS["id"]);
 123         }
 124         global $ewiki_title;
 125
 126 ///     #-- predefine some of the configuration constants
 127
 128
 129         /// EWIKI_NAME is defined in ewikimoodlelibs, so that also admin.php can use this
 130         #define("EWIKI_NAME", $wiki_entry->pagename);
 131
 132         /// Search Hilighting
 133         if($ewiki_title=="SearchPages") {
 134             $qArgument="&amp;q=".urlencode($q);
 135         }
 136
 137         /// Build the ewsiki script constant
 138         /// ewbase will also be needed by EWIKI_SCRIPT_BINARY
 139         $ewbase = 'view.php?id='.$cm->id;
 140         if (isset($userid) && $userid!=0) $ewbase .= '&amp;userid='.$userid;
 141         if (isset($groupid) && $groupid!=0) $ewbase .= '&amp;groupid='.$groupid;
 142         $ewscript = $ewbase.'&amp;page=';
 143         define("EWIKI_SCRIPT", $ewscript);
 144         define("EWIKI_SCRIPT_URL", $ewscript);
 145
 146         /// # Settings for this specific Wiki
 147         define("EWIKI_PRINT_TITLE", $wiki->ewikiprinttitle);
 148
 149         define("EWIKI_INIT_PAGES", wiki_content_dir($wiki));
 150
 151 ///     # Moodle always addslashes to everything so we are going to strip them always
 152 ///     # to allow wiki itself to add them again. It's a triple add-strip-add but
 153 ///     # was the only way to solve the problem without modifying how the rest of
 154 ///     # the module works.
 155         include($CFG->dirroot."/mod/wiki/ewiki/fragments/strip_wonderful_slashes.php");
 156
 157         if (ini_get("register_globals")) {
 158             #    include($CFG->dirroot."/mod/wiki/ewiki/fragments/strike_register_globals.php");
 159         }
 160
 161         # Database Handler
 162         include_once($CFG->dirroot."/mod/wiki/ewikimoodlelib.php");
 163         # Plugins
 164         //include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/email_protect.php");
 165         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/patchsaving.php");
 166         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/notify.php");
 167         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/feature/imgresize_gd.php");
 168         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/moodle/moodle_highlight.php");
 169         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/moodle/f_fixhtml.php");
 170         #include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/moodle/wikinews.php");
 171         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/moodle/sitemap.php");
 172         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/moodle/moodle_wikidump.php");
 173         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/aview/backlinks.php");
 174         #include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/markup/css.php");
 175         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/markup/footnotes.php");
 176         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/moodle/diff.php");
 177         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/page/pageindex.php");
 178         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/page/orphanedpages.php");
 179         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/moodle/wantedpages.php");
 180
 181         # Binary Handling
 182         if($wiki->ewikiacceptbinary) {
 183             define("EWIKI_UPLOAD_MAXSIZE", get_max_upload_file_size());
 184             define("EWIKI_SCRIPT_BINARY", $ewbase."&binary=");
 185             define("EWIKI_ALLOW_BINARY",1);
 186             define("EWIKI_IMAGE_CACHING",1);
 187             #define("EWIKI_AUTOVIEW",1);
 188             include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/lib/mime_magic.php");
 189             include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/aview/downloads.php");
 190             include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/moodle/downloads.php");
 191             #include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/db/binary_store.php");
 192             include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/moodle/moodle_binary_store.php");
 193         } else {
 194             define("EWIKI_SCRIPT_BINARY", 0);
 195             define("EWIKI_ALLOW_BINARY",0);
 196         }
 197
 198         # The mighty Wiki itself
 199         include_once($CFG->dirroot."/mod/wiki/ewiki/ewiki.php");
 200
 201         if($canceledit) {
 202           if ($delim = strpos($page, EWIKI_ACTION_SEP_CHAR)) {
 203             @$page = substr($page, $delim + 1);
 204           } else {
 205             @$page="";
 206           }
 207         }
 208         # Language-stuff: eWiki gets language from Browser. Lets correct it. Empty arrayelements do no harm
 209         $ewiki_t["languages"]=array(current_language(), $course->lang, $CFG->lang,"en","c");
 210
 211         # Check Access Rights
 212         $canedit = wiki_can_edit_entry($wiki_entry, $wiki, $USER, $course);
 213         if (!$canedit) {
 214             # Protected Mode
 215             unset($ewiki_plugins["action"]["edit"]);
 216             unset($ewiki_plugins["action"]["info"]);
 217         }
 218
 219         # HTML Handling
 220         $ewiki_use_editor=0;
 221         if($wiki->htmlmode == 0) {
 222             # No HTML
 223             $ewiki_config["htmlentities"]=array(); // HTML is managed by moodle
 224             $moodle_format=FORMAT_TEXT;
 225         }
 226         if($wiki->htmlmode == 1) {
 227             # Safe HTML
 228             include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/moodle/moodle_rescue_html.php");
 229             $moodle_format=FORMAT_HTML;
 230         }
 231         if($wiki->htmlmode == 2) {
 232             # HTML Only
 233             $moodle_format=FORMAT_HTML;
 234             $ewiki_use_editor=1;
 235             $ewiki_config["htmlentities"]=array(); // HTML is allowed
 236             $ewiki_config["wiki_link_regex"] = "\007 [!~]?(
 237                         \#?\[[^<>\[\]\n]+\] |
 238                         \^[-".EWIKI_CHARS_U.EWIKI_CHARS_L."]{3,} |
 239                         \b([\w]{3,}:)*([".EWIKI_CHARS_U."]+[".EWIKI_CHARS_L."]+){2,}\#?[\w\d]* |
 240                         \w[-_.+\w]+@(\w[-_\w]+[.])+\w{2,}   ) \007x";
 241         }
 242
 243         global $ewiki_author, $USER;
 244         $ewiki_author=fullname($USER);
 245         $content=ewiki_page($page);
 246         $content2='';
 247
 248 ///     ################# EWIKI Part ###########################
 249     }
 250     else {
 251         $content = '';
 252         $content2 = '<div class="boxaligncenter">'.get_string('nowikicreated', 'wiki').'</div>';
 253
 254     }
 255
 256     # Group wiki, ...: No page and no ewiki_title
 257     if(!isset($ewiki_title)) {
 258           $ewiki_title="";
 259     }
 260
 261
 262 /// Moodle Log
 263     if ($editsave != NULL) { /// We've submitted an edit and have been redirected back here
 264         add_to_log($course->id, "wiki", 'edit',
 265                addslashes("view.php?id=$cm->id&amp;groupid=$groupid&amp;userid=$userid&amp;page=$ewiki_title"),
 266                format_string($wiki->name,true).": ".$ewiki_title, $cm->id, $userid);
 267     } else if ($ewiki_action != 'edit') {
 268         add_to_log($course->id, "wiki", $ewiki_action,
 269                addslashes("view.php?id=$cm->id&amp;groupid=$groupid&amp;userid=$userid&amp;page=$ewiki_title"),
 270                format_string($wiki->name,true).": ".$ewiki_title, $cm->id, $userid);
 271     }
 272
 273
 274 /// Print the page header
 275
 276     $strwikis = get_string("modulenameplural", "wiki");
 277     $strwiki  = get_string("modulename", "wiki");
 278
 279     $navlinks = array();
 280 /// Add page name if not main page
 281     if ($ewiki_title != $wiki->name) {
 282         $navlinks[] = array('name' => format_string($ewiki_title), 'link' => '', 'type' => 'title');
 283     }
 284
 285     $navigation = build_navigation($navlinks, $cm);
 286     print_header_simple($ewiki_title?$ewiki_title:format_string($wiki->name), "", $navigation,
 287                 "", "", $cacheme, update_module_button($cm->id, $course->id, $strwiki),
 288                 navmenu($course, $cm));
 289
 290
 291     /// Print Page
 292     echo '    <div id="wikiPageActions">
 293     ';
 294     /// The top row contains links to other wikis, if applicable.
 295     if ($wiki_entry && $wiki_list = wiki_get_other_wikis($wiki, $USER, $course, $wiki_entry->id)) {
 296         //echo "wiki list ";print_r($wiki_list);
 297         $selected="";
 298
 299         if (isset($wiki_list['selected'])) {
 300             $selected = $wiki_list['selected'];
 301             unset($wiki_list['selected']);
 302         }
 303         echo '<tr><td colspan="2">';
 304
 305         echo '<form id="otherwikis" action="'.$CFG->wwwroot.'/mod/wiki/view.php">';
 306         echo '<table border="0" cellpadding="0" cellspacing="0" width="100%"><tr>';
 307         echo '<td class="sideblockheading">&nbsp;'
 308             .$WIKI_TYPES[$wiki->wtype].' '
 309             .get_string('modulename', 'wiki')." ".get_string('for',"wiki")." "
 310             .wiki_get_owner($wiki_entry).':</td>';
 311
 312         echo '<td class="sideblockheading">'
 313             .get_string('otherwikis', 'wiki').':&nbsp;&nbsp;';
 314         $script = 'self.location=getElementById(\'otherwikis\').wikiselect.options[getElementById(\'otherwikis\').wikiselect.selectedIndex].value';
 315         choose_from_menu($wiki_list, "wikiselect", $selected, "choose", $script);
 316         echo '</td>';
 317         echo '</tr></table>';
 318         echo '</form>';
 319
 320         echo '</td>';
 321         echo '</tr>';
 322     }
 323
 324     if ($wiki_entry) {
 325         $specialpages=array("WikiExport", "SiteMap", "SearchPages", "PageIndex","NewestPages","MostVisitedPages","MostOftenChangedPages","UpdatedPages","FileDownload","FileUpload","OrphanedPages","WantedPages");
 326     /// Page Actions
 327         echo '<table border="0" width="100%">';
 328         echo '<tr>';
 329
 330         /// Searchform
 331         echo '<td class="wikisearchform">';
 332         wiki_print_search_form($cm->id, $q, $userid, $groupid, false);
 333         echo '</td>';
 334
 335         /// Internal Wikilinks
 336         echo '<td class="wikilinksblock">';
 337         wiki_print_wikilinks_block($cm->id,  $wiki->ewikiacceptbinary);
 338         echo '</td>';
 339
 340         /// Administrative Links
 341         if($canedit) {
 342           echo '<td class="wikiadminactions">';
 343           wiki_print_administration_actions($wiki, $cm->id, $userid, $groupid, $ewiki_title, $wiki->htmlmode!=2, $course);
 344           echo '</td>';
 345         }
 346
 347         /// Formatting Rules
 348         echo '<td class="howtowiki">';
 349         helpbutton('howtowiki', get_string('howtowiki', 'wiki'), 'wiki');
 350         echo '</td>';
 351
 352         echo '</tr></table>';
 353     }
 354
 355     echo '</div>
 356     <div id="wiki-view" class="mwiki">
 357     ';
 358
 359     if($wiki_entry && $ewiki_title==$wiki_entry->pagename && !empty($wiki->summary)) {
 360       if (trim(strip_tags($wiki->summary))) {
 361           print_box(format_text($wiki->summary, FORMAT_MOODLE), 'generalbox', 'intro');
 362       }
 363     }
 364
 365     // The wiki Contents
 366
 367     if (!empty($canedit)) {   /// Print tabs with commands for this page
 368         $tabs = array('view', 'edit','links','info');
 369         if ($wiki->ewikiacceptbinary) {
 370             $tabs[] = 'attachments';
 371         }
 372
 373         $tabrows = array();
 374         $row  = array();
 375         $currenttab = '';
 376         foreach ($tabs as $tab) {
 377             $tabname = get_string("tab$tab", 'wiki');
 378             $row[] = new tabobject($tabname, $ewbase.'&amp;page='.$tab.'/'.s($ewiki_id), $tabname);
 379             if ($ewiki_action == "$tab" or in_array($page, $specialpages)) {
 380                 $currenttab = $tabname;
 381             }
 382         }
 383         $tabrows[] = $row;
 384
 385         print_tabs($tabrows, $currenttab);
 386     }
 387
 388     /// Insert a link to force page refresh if new content isn't showing.
 389
 390     // build new URL + query string
 391     $queries = preg_split('/[?&]/', me());
 392     $nqueries = count($queries);
 393     $me = $queries[0] . '?';
 394     for($i=1; $i < $nqueries; $i++)
 395     {
 396         if( !strstr($queries[$i], 'allowcache') )
 397             $me .= $queries[$i] . '&amp;';
 398     }
 399     $me .= 'allowcache=0';
 400
 401     // Insert the link
 402     $linkdesc = get_string('reloadlinkdescription', 'wiki');
 403     $linktext = get_string('reloadlinktext', 'wiki');
 404     echo "<div class='wikilinkright'><a href='$me' title='$linkdesc'><input type='button' value='$linktext' /></a></div>";
 405
 406     print_simple_box_start('center', '100%', '', '20');
 407
 408     /// Don't filter any pages containing wiki actions (except view). A wiki page containing
 409     /// actions will have the form [action]/[pagename]. If the action is 'view' or the  '/'
 410     /// isn't there (so the action defaults to 'view'), filter it.
 411     /// If the page does not yet exist, the display will default to 'edit'.
 412     if((count($actions) < 2 || $actions[0] == "view") && $wiki_entry &&
 413         record_exists('wiki_pages', 'pagename', addslashes($page), 'wiki', $wiki_entry->id)) {
 414         print(format_text($content, $moodle_format));
 415     } else if($actions[0]=='edit' && $reallyedit) {
 416         // Check the page isn't locked before printing out standard wiki content. (Locking
 417         // is implemented as a wrapper over the existing wiki.)
 418         list($gotlock,$lock)=wiki_obtain_lock($wiki_entry->id,$pagename);
 419         if(!$gotlock) {
 420             $modcontext = get_context_instance(CONTEXT_MODULE, $cm->id);
 421             $canoverridelock = has_capability('mod/wiki:overridelock', $modcontext);
 422
 423             $a=new stdClass;
 424             $a->since=userdate($lock->lockedsince);
 425             $a->seen=userdate($lock->lockedseen);
 426             $user=get_record('user','id',$lock->lockedby);
 427             $a->name=fullname($user,
 428               has_capability('moodle/site:viewfullnames', $modcontext));
 429
 430             print_string('pagelocked','wiki',$a);
 431
 432             if($canoverridelock) {
 433                 $pageesc=htmlspecialchars($page);
 434                 $stroverrideinfo=get_string('overrideinfo','wiki');
 435                 $stroverridebutton=get_string('overridebutton','wiki');
 436                 $sesskey=sesskey();
 437                 print "
 438 <form id='overridelock' method='post' action='overridelock.php'>
 439   <div>
 440   <input type='hidden' name='sesskey' value='$sesskey' />
 441   <input type='hidden' name='id' value='$cm->id' />
 442   <input type='hidden' name='page' value='$pageesc' />
 443   $stroverrideinfo
 444   <input type='submit' value='$stroverridebutton' />
 445   </div>
 446 </form>
 447 ";
 448             }
 449         } else {
 450             if (ajaxenabled()) {
 451                 // OK, the page is now locked to us. Put in the AJAX for keeping the lock
 452                 $strlockcancelled=addslashes(get_string('lockcancelled','wiki'));
 453                 $strnojslockwarning=get_string('nojslockwarning','wiki');
 454                 $intervalms=WIKI_LOCK_RECONFIRM*1000;
 455                 print "
 456 <script type='text/javascript'>
 457 var intervalID;
 458 function handleResponse(o) {
 459     if(o.responseText=='cancel') {
 460         document.forms['ewiki'].elements['preview'].disabled=true;
 461         document.forms['ewiki'].elements['save'].disabled=true;
 462         clearInterval(intervalID);
 463         alert('$strlockcancelled');
 464     }
 465 }
 466 function handleFailure(o) {
 467     // Ignore for now
 468 }
 469 intervalID=setInterval(function() {
 470     YAHOO.util.Connect.asyncRequest('POST','confirmlock.php',
 471         {success:handleResponse,failure:handleFailure},'lockid={$lock->id}');
 472     },$intervalms);
 473 </script>
 474 <noscript><p>
 475 $strnojslockwarning
 476 </p></noscript>
 477 ";
 478             }
 479             // Print editor etc
 480             print $content;
 481         }
 482     } else {
 483         print $content;
 484     }
 485     print $content2;
 486     print_simple_box_end();
 487     echo "<br />";
 488
 489 /// Finish the page
 490     echo '
 491     </div>
 492     ';
 493
 494     print_footer($course);
 495 ?>