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_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',"");              // 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         $id = $cm->id;
  63         $_REQUEST["id"] = $id;
  64     }
  65
  66     require_course_login($course, true, $cm);
  67
  68     /// Add the course module info to the wiki object, for easy access.
  69     $wiki->groupmode = $cm->groupmode;
  70     $wiki->groupingid = $cm->groupingid;
  71     $wiki->groupmembersonly = $cm->groupmembersonly;
  72     $wiki->cmid = $cm->id;
  73
  74     /// Default format:
  75     $moodle_format=FORMAT_MOODLE;
  76
  77     ### SAVE ID from Moodle
  78     $moodleID=@$_REQUEST["id"];
  79
  80 /// Globally disable CamelCase, if the option is selected for this wiki.
  81     $moodle_disable_camel_case = ($wiki->disablecamelcase == 1);
  82
  83     if (($wiki_entry = wiki_get_default_entry($wiki, $course, $userid, $groupid))) {
  84         // OK, now we know the entry ID, we can do lock etc.
  85
  86         // If true, we are 'really' on an editing page, not just on edit/something
  87         $reallyedit=$actions[0]=='edit' && !$canceledit && !$editsave;
  88
  89         // Remove lock when we go to another wiki page (such as the cancel page)
  90         if(!$reallyedit) {
  91             wiki_release_lock($wiki_entry->id,$pagename);
  92         } else if(array_key_exists('content',$_POST)) {
  93             // Do not allow blank content because it causes problems (the wiki decides
  94             // the page should automatically go into edit mode, but Moodle doesn't realise
  95             // this and filters out the JS)
  96             if($_POST['content']=='') {
  97                 $_POST['content']="\n";
  98                 $_REQUEST['content']="\n";
  99             }
 100
 101             // We must have the edit lock in order to be permitted to save
 102             list($ok,$lock)=wiki_obtain_lock($wiki_entry->id,$pagename);
 103             if(!$ok) {
 104                 $strsavenolock=get_string('savenolock','wiki');
 105                 error($strsavenolock,$CFG->wwwroot.'/mod/wiki/view.php?id='.$cm->id.'&page=view/'.urlencode($pagename));
 106             }
 107         }
 108
 109 ///     ################# EWIKI Part ###########################
 110 ///     The wiki_entry->pagename is set to the specified value of the wiki,
 111 ///     or the default value in the 'lang' file if the specified value was empty.
 112         define("EWIKI_PAGE_INDEX",$wiki_entry->pagename);
 113
 114         /// If the page has a ' in it, it may have slashes added to it. Remove them if it does.
 115         $page = ($page === false) ?  stripslashes(EWIKI_PAGE_INDEX) : stripslashes($page);
 116
 117 ///     # Prevent ewiki getting id as PageID...
 118         unset($_REQUEST["id"]);
 119         unset($_GET["id"]);
 120         unset($_POST["id"]);
 121         unset($_POST["id"]);
 122         unset($_SERVER["QUERY_STRING"]);
 123         if (isset($HTTP_GET_VARS)) {
 124             unset($HTTP_GET_VARS["id"]);
 125         }
 126         if (isset($HTTP_POST_VARS)) {
 127             unset($HTTP_POST_VARS["id"]);
 128         }
 129         global $ewiki_title;
 130
 131 ///     #-- predefine some of the configuration constants
 132
 133
 134         /// EWIKI_NAME is defined in ewikimoodlelibs, so that also admin.php can use this
 135         #define("EWIKI_NAME", $wiki_entry->pagename);
 136
 137         /// Search Hilighting
 138         if($ewiki_title=="SearchPages") {
 139             $qArgument="&amp;q=".urlencode($q);
 140         }
 141
 142         /// Build the ewsiki script constant
 143         /// ewbase will also be needed by EWIKI_SCRIPT_BINARY
 144         $ewbase = 'view.php?id='.$moodleID;
 145         if (isset($userid) && $userid!=0) $ewbase .= '&amp;userid='.$userid;
 146         if (isset($groupid) && $groupid!=0) $ewbase .= '&amp;groupid='.$groupid;
 147         $ewscript = $ewbase.'&amp;page=';
 148         define("EWIKI_SCRIPT", $ewscript);
 149         define("EWIKI_SCRIPT_URL", $ewscript);
 150
 151         /// # Settings for this specific Wiki
 152         define("EWIKI_PRINT_TITLE", $wiki->ewikiprinttitle);
 153
 154         define("EWIKI_INIT_PAGES", wiki_content_dir($wiki));
 155
 156 ///     # Moodle always addslashes to everything so we are going to strip them always
 157 ///     # to allow wiki itself to add them again. It's a triple add-strip-add but
 158 ///     # was the only way to solve the problem without modifying how the rest of
 159 ///     # the module works.
 160         include($CFG->dirroot."/mod/wiki/ewiki/fragments/strip_wonderful_slashes.php");
 161
 162         if (ini_get("register_globals")) {
 163             #    include($CFG->dirroot."/mod/wiki/ewiki/fragments/strike_register_globals.php");
 164         }
 165
 166         # Database Handler
 167         include_once($CFG->dirroot."/mod/wiki/ewikimoodlelib.php");
 168         # Plugins
 169         //include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/email_protect.php");
 170         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/patchsaving.php");
 171         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/notify.php");
 172         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/feature/imgresize_gd.php");
 173         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/moodle/moodle_highlight.php");
 174         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/moodle/f_fixhtml.php");
 175         #include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/moodle/wikinews.php");
 176         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/moodle/sitemap.php");
 177         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/moodle/moodle_wikidump.php");
 178         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/aview/backlinks.php");
 179         #include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/markup/css.php");
 180         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/markup/footnotes.php");
 181         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/moodle/diff.php");
 182         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/page/pageindex.php");
 183         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/page/orphanedpages.php");
 184         include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/moodle/wantedpages.php");
 185
 186         # Binary Handling
 187         if($wiki->ewikiacceptbinary) {
 188             define("EWIKI_UPLOAD_MAXSIZE", get_max_upload_file_size());
 189             define("EWIKI_SCRIPT_BINARY", $ewbase."&binary=");
 190             define("EWIKI_ALLOW_BINARY",1);
 191             define("EWIKI_IMAGE_CACHING",1);
 192             #define("EWIKI_AUTOVIEW",1);
 193             include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/lib/mime_magic.php");
 194             include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/aview/downloads.php");
 195             include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/moodle/downloads.php");
 196             #include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/db/binary_store.php");
 197             include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/moodle/moodle_binary_store.php");
 198         } else {
 199             define("EWIKI_SCRIPT_BINARY", 0);
 200             define("EWIKI_ALLOW_BINARY",0);
 201         }
 202
 203         # The mighty Wiki itself
 204         include_once($CFG->dirroot."/mod/wiki/ewiki/ewiki.php");
 205
 206         if($canceledit) {
 207           if ($delim = strpos($page, EWIKI_ACTION_SEP_CHAR)) {
 208             @$page = substr($page, $delim + 1);
 209           } else {
 210             @$page="";
 211           }
 212         }
 213         # Language-stuff: eWiki gets language from Browser. Lets correct it. Empty arrayelements do no harm
 214         $ewiki_t["languages"]=array(current_language(), $course->lang, $CFG->lang,"en","c");
 215
 216         # Check Access Rights
 217         $canedit = wiki_can_edit_entry($wiki_entry, $wiki, $USER, $course);
 218         if (!$canedit) {
 219             # Protected Mode
 220             unset($ewiki_plugins["action"]["edit"]);
 221             unset($ewiki_plugins["action"]["info"]);
 222         }
 223
 224         # HTML Handling
 225         $ewiki_use_editor=0;
 226         if($wiki->htmlmode == 0) {
 227             # No HTML
 228             $ewiki_config["htmlentities"]=array(); // HTML is managed by moodle
 229             $moodle_format=FORMAT_TEXT;
 230         }
 231         if($wiki->htmlmode == 1) {
 232             # Safe HTML
 233             include_once($CFG->dirroot."/mod/wiki/ewiki/plugins/moodle/moodle_rescue_html.php");
 234             $moodle_format=FORMAT_HTML;
 235         }
 236         if($wiki->htmlmode == 2) {
 237             # HTML Only
 238             $moodle_format=FORMAT_HTML;
 239             $ewiki_use_editor=1;
 240             $ewiki_config["htmlentities"]=array(); // HTML is allowed
 241             $ewiki_config["wiki_link_regex"] = "\007 [!~]?(
 242                         \#?\[[^<>\[\]\n]+\] |
 243                         \^[-".EWIKI_CHARS_U.EWIKI_CHARS_L."]{3,} |
 244                         \b([\w]{3,}:)*([".EWIKI_CHARS_U."]+[".EWIKI_CHARS_L."]+){2,}\#?[\w\d]* |
 245                         \w[-_.+\w]+@(\w[-_\w]+[.])+\w{2,}   ) \007x";
 246         }
 247
 248         global $ewiki_author, $USER;
 249         $ewiki_author=fullname($USER);
 250         $content=ewiki_page($page);
 251         $content2='';
 252
 253         ### RESTORE ID from Moodle
 254         $_REQUEST["id"]=$moodleID;
 255         $id=$moodleID;
 256 ///     ################# EWIKI Part ###########################
 257     }
 258     else {
 259         $content = '';
 260         $content2 = '<div class="boxaligncenter">'.get_string('nowikicreated', 'wiki').'</div>';
 261
 262     }
 263
 264     # Group wiki, ...: No page and no ewiki_title
 265     if(!isset($ewiki_title)) {
 266           $ewiki_title="";
 267     }
 268
 269
 270 /// Moodle Log
 271     if ($editsave != NULL) { /// We've submitted an edit and have been redirected back here
 272         add_to_log($course->id, "wiki", 'edit',
 273                addslashes("view.php?id=$cm->id&amp;groupid=$groupid&amp;userid=$userid&amp;page=$ewiki_title"),
 274                format_string($wiki->name,true).": ".$ewiki_title, $cm->id, $userid);
 275     } else if ($ewiki_action != 'edit') {
 276         add_to_log($course->id, "wiki", $ewiki_action,
 277                addslashes("view.php?id=$cm->id&amp;groupid=$groupid&amp;userid=$userid&amp;page=$ewiki_title"),
 278                format_string($wiki->name,true).": ".$ewiki_title, $cm->id, $userid);
 279     }
 280
 281
 282 /// Print the page header
 283
 284     $strwikis = get_string("modulenameplural", "wiki");
 285     $strwiki  = get_string("modulename", "wiki");
 286
 287     $navlinks = array();
 288     $navlinks[] = array('name' => $strwikis, 'link' => "index.php?id=$course->id", 'type' => 'activity');
 289     $navlinks[] = array('name' => format_string($wiki->name,true), 'link' => "view.php?id=$moodleID", 'type' => 'activityinstace');
 290
 291     $navigation = build_navigation($navlinks);
 292
 293     print_header_simple($ewiki_title?$ewiki_title:format_string($wiki->name), "", $navigation,
 294                 "", "", $cacheme, update_module_button($cm->id, $course->id, $strwiki),
 295                 navmenu($course, $cm));
 296
 297
 298     /// Print Page
 299     echo '    <div id="wikiPageActions">
 300     ';
 301     /// The top row contains links to other wikis, if applicable.
 302     if ($wiki_entry && $wiki_list = wiki_get_other_wikis($wiki, $USER, $course, $wiki_entry->id)) {
 303         //echo "wiki list ";print_r($wiki_list);
 304         $selected="";
 305
 306         if (isset($wiki_list['selected'])) {
 307             $selected = $wiki_list['selected'];
 308             unset($wiki_list['selected']);
 309         }
 310         echo '<tr><td colspan="2">';
 311
 312         echo '<form id="otherwikis" action="'.$CFG->wwwroot.'/mod/wiki/view.php">';
 313         echo '<table border="0" cellpadding="0" cellspacing="0" width="100%"><tr>';
 314         echo '<td class="sideblockheading">&nbsp;'
 315             .$WIKI_TYPES[$wiki->wtype].' '
 316             .get_string('modulename', 'wiki')." ".get_string('for',"wiki")." "
 317             .wiki_get_owner($wiki_entry).':</td>';
 318
 319         echo '<td class="sideblockheading">'
 320             .get_string('otherwikis', 'wiki').':&nbsp;&nbsp;';
 321         $script = 'self.location=getElementById(\'otherwikis\').wikiselect.options[getElementById(\'otherwikis\').wikiselect.selectedIndex].value';
 322         choose_from_menu($wiki_list, "wikiselect", $selected, "choose", $script);
 323         echo '</td>';
 324         echo '</tr></table>';
 325         echo '</form>';
 326
 327         echo '</td>';
 328         echo '</tr>';
 329     }
 330
 331     if ($wiki_entry) {
 332         $specialpages=array("WikiExport", "SiteMap", "SearchPages", "PageIndex","NewestPages","MostVisitedPages","MostOftenChangedPages","UpdatedPages","FileDownload","FileUpload","OrphanedPages","WantedPages");
 333     /// Page Actions
 334         echo '<table border="0" width="100%">';
 335         echo '<tr>';
 336
 337         /// Searchform
 338         echo '<td class="wikisearchform">';
 339         wiki_print_search_form($cm->id, $q, $userid, $groupid, false);
 340         echo '</td>';
 341
 342         /// Internal Wikilinks
 343         echo '<td class="wikilinksblock">';
 344         wiki_print_wikilinks_block($cm->id,  $wiki->ewikiacceptbinary);
 345         echo '</td>';
 346
 347         /// Administrative Links
 348         if($canedit) {
 349           echo '<td class="wikiadminactions">';
 350           wiki_print_administration_actions($wiki, $cm->id, $userid, $groupid, $ewiki_title, $wiki->htmlmode!=2, $course);
 351           echo '</td>';
 352         }
 353
 354         /// Formatting Rules
 355         echo '<td class="howtowiki">';
 356         helpbutton('howtowiki', get_string('howtowiki', 'wiki'), 'wiki');
 357         echo '</td>';
 358
 359         echo '</tr></table>';
 360     }
 361
 362     echo '</div>
 363     <div id="wiki-view" class="mwiki">
 364     ';
 365
 366     if($wiki_entry && $ewiki_title==$wiki_entry->pagename && !empty($wiki->summary)) {
 367       if (trim(strip_tags($wiki->summary))) {
 368           print_box(format_text($wiki->summary, FORMAT_MOODLE), 'generalbox', 'intro');
 369       }
 370     }
 371
 372     // The wiki Contents
 373
 374     if (!empty($canedit)) {   /// Print tabs with commands for this page
 375         $tabs = array('view', 'edit','links','info');
 376         if ($wiki->ewikiacceptbinary) {
 377             $tabs[] = 'attachments';
 378         }
 379
 380         $tabrows = array();
 381         $row  = array();
 382         $currenttab = '';
 383         foreach ($tabs as $tab) {
 384             $tabname = get_string("tab$tab", 'wiki');
 385             $row[] = new tabobject($tabname, $ewbase.'&amp;page='.$tab.'/'.$ewiki_id, $tabname);
 386             if ($ewiki_action == "$tab" or in_array($page, $specialpages)) {
 387                 $currenttab = $tabname;
 388             }
 389         }
 390         $tabrows[] = $row;
 391
 392         print_tabs($tabrows, $currenttab);
 393     }
 394
 395     /// Insert a link to force page refresh if new content isn't showing.
 396
 397     // build new URL + query string
 398     $queries = preg_split('/[?&]/', me());
 399     $nqueries = count($queries);
 400     $me = $queries[0] . '?';
 401     for($i=1; $i < $nqueries; $i++)
 402     {
 403         if( !strstr($queries[$i], 'allowcache') )
 404             $me .= $queries[$i] . '&amp;';
 405     }
 406     $me .= 'allowcache=0';
 407
 408     // Insert the link
 409     $linkdesc = get_string('reloadlinkdescription', 'wiki');
 410     $linktext = get_string('reloadlinktext', 'wiki');
 411     echo "<div class='wikilinkright'><a href='$me' title='$linkdesc'><input type='button' value='$linktext' /></a></div>";
 412
 413     print_simple_box_start('center', '100%', '', '20');
 414
 415     /// Don't filter any pages containing wiki actions (except view). A wiki page containing
 416     /// actions will have the form [action]/[pagename]. If the action is 'view' or the  '/'
 417     /// isn't there (so the action defaults to 'view'), filter it.
 418     /// If the page does not yet exist, the display will default to 'edit'.
 419     if((count($actions) < 2 || $actions[0] == "view") && $wiki_entry &&
 420         record_exists('wiki_pages', 'pagename', addslashes($page), 'wiki', $wiki_entry->id)) {
 421         print(format_text($content, $moodle_format));
 422     } else if($actions[0]=='edit' && $reallyedit) {
 423         // Check the page isn't locked before printing out standard wiki content. (Locking
 424         // is implemented as a wrapper over the existing wiki.)
 425         list($gotlock,$lock)=wiki_obtain_lock($wiki_entry->id,$pagename);
 426         if(!$gotlock) {
 427             $modcontext = get_context_instance(CONTEXT_MODULE, $cm->id);
 428             $canoverridelock = has_capability('mod/wiki:overridelock', $modcontext);
 429
 430             $a=new stdClass;
 431             $a->since=userdate($lock->lockedsince);
 432             $a->seen=userdate($lock->lockedseen);
 433             $user=get_record('user','id',$lock->lockedby);
 434             $a->name=fullname($user,
 435               has_capability('moodle/site:viewfullnames', $modcontext));
 436
 437             print_string('pagelocked','wiki',$a);
 438
 439             if($canoverridelock) {
 440                 $pageesc=htmlspecialchars($page);
 441                 $stroverrideinfo=get_string('overrideinfo','wiki');
 442                 $stroverridebutton=get_string('overridebutton','wiki');
 443                 $sesskey=sesskey();
 444                 print "
 445 <form id='overridelock' method='post' action='overridelock.php'>
 446   <div>
 447   <input type='hidden' name='sesskey' value='$sesskey' />
 448   <input type='hidden' name='id' value='$id' />
 449   <input type='hidden' name='page' value='$pageesc' />
 450   $stroverrideinfo
 451   <input type='submit' value='$stroverridebutton' />
 452   </div>
 453 </form>
 454 ";
 455             }
 456         } else {
 457             if (ajaxenabled()) {
 458                 // OK, the page is now locked to us. Put in the AJAX for keeping the lock
 459                 $strlockcancelled=get_string('lockcancelled','wiki');
 460                 $strnojslockwarning=get_string('nojslockwarning','wiki');
 461                 $intervalms=WIKI_LOCK_RECONFIRM*1000;
 462                 print "
 463 <script type='text/javascript'>
 464 var intervalID;
 465 function handleResponse(o) {
 466     if(o.responseText=='cancel') {
 467         document.forms['ewiki'].elements['preview'].disabled=true;
 468         document.forms['ewiki'].elements['save'].disabled=true;
 469         clearInterval(intervalID);
 470         alert('$strlockcancelled');
 471     }
 472 }
 473 function handleFailure(o) {
 474     // Ignore for now
 475 }
 476 intervalID=setInterval(function() {
 477     YAHOO.util.Connect.asyncRequest('POST','confirmlock.php',
 478         {success:handleResponse,failure:handleFailure},'lockid={$lock->id}');
 479     },$intervalms);
 480 </script>
 481 <noscript><p>
 482 $strnojslockwarning
 483 </p></noscript>
 484 ";
 485             }
 486             // Print editor etc
 487             print $content;
 488         }
 489     } else {
 490         print $content;
 491     }
 492     print $content2;
 493     print_simple_box_end();
 494     echo "<br />";
 495
 496 /// Finish the page
 497     echo '
 498     </div>
 499     ';
 500
 501     print_footer($course);
 502 ?>