includes/OutputPage.php

   1 <?php
   2
   3 # This is not a valid entry point, perform no further processing unless MEDIAWIKI is defined
   4 if( defined( "MEDIAWIKI" ) ) {
   5
   6 # See design.doc
   7
   8 if($wgUseTeX) require_once( "Math.php" );
   9
  10 class OutputPage {
  11         var $mHeaders, $mCookies, $mMetatags, $mKeywords;
  12         var $mLinktags, $mPagetitle, $mBodytext, $mDebugtext;
  13         var $mHTMLtitle, $mRobotpolicy, $mIsarticle, $mPrintable;
  14         var $mSubtitle, $mRedirect;
  15         var $mLastModified, $mCategoryLinks;
  16         var $mScripts;
  17
  18         var $mSuppressQuickbar;
  19         var $mOnloadHandler;
  20         var $mDoNothing;
  21         var $mContainsOldMagic, $mContainsNewMagic;
  22         var $mIsArticleRelated;
  23         var $mParserOptions;
  24         var $mShowFeedLinks = false;
  25         var $mEnableClientCache = true;
  26
  27         function OutputPage()
  28         {
  29                 $this->mHeaders = $this->mCookies = $this->mMetatags =
  30                 $this->mKeywords = $this->mLinktags = array();
  31                 $this->mHTMLtitle = $this->mPagetitle = $this->mBodytext =
  32                 $this->mRedirect = $this->mLastModified =
  33                 $this->mSubtitle = $this->mDebugtext = $this->mRobotpolicy =
  34                 $this->mOnloadHandler = "";
  35                 $this->mIsArticleRelated = $this->mIsarticle = $this->mPrintable = true;
  36                 $this->mSuppressQuickbar = $this->mPrintable = false;
  37                 $this->mLanguageLinks = array();
  38                 $this->mCategoryLinks = array() ;
  39                 $this->mDoNothing = false;
  40                 $this->mContainsOldMagic = $this->mContainsNewMagic = 0;
  41                 $this->mParserOptions = ParserOptions::newFromUser( $temp = NULL );
  42                 $this->mSquidMaxage = 0;
  43                 $this->mScripts = "";
  44         }
  45
  46         function addHeader( $name, $val ) { array_push( $this->mHeaders, "$name: $val" ) ; }
  47         function addCookie( $name, $val ) { array_push( $this->mCookies, array( $name, $val ) ); }
  48         function redirect( $url, $responsecode = '302' ) { $this->mRedirect = $url; $this->mRedirectCode = $responsecode; }
  49
  50         # To add an http-equiv meta tag, precede the name with "http:"
  51         function addMeta( $name, $val ) { array_push( $this->mMetatags, array( $name, $val ) ); }
  52         function addKeyword( $text ) { array_push( $this->mKeywords, $text ); }
  53         function addScript( $script ) { $this->mScripts .= $script; }
  54         function getScript() { return $this->mScripts; }
  55
  56         function addLink( $linkarr ) {
  57                 # $linkarr should be an associative array of attributes. We'll escape on output.
  58                 array_push( $this->mLinktags, $linkarr );
  59         }
  60
  61         function addMetadataLink( $linkarr ) {
  62                 # note: buggy CC software only reads first "meta" link
  63                 static $haveMeta = false;
  64                 $linkarr["rel"] = ($haveMeta) ? "alternate meta" : "meta";
  65                 $this->addLink( $linkarr );
  66                 $haveMeta = true;
  67         }
  68
  69         # checkLastModified tells the client to use the client-cached page if
  70         # possible. If sucessful, the OutputPage is disabled so that
  71         # any future call to OutputPage->output() have no effect. The method
  72         # returns true iff cache-ok headers was sent.
  73         function checkLastModified ( $timestamp )
  74         {
  75                 global $wgLang, $wgCachePages, $wgUser;
  76                 if( !$wgCachePages ) {
  77                         wfDebug( "CACHE DISABLED\n", false );
  78                         return;
  79                 }
  80                 if( preg_match( '/MSIE ([1-4]|5\.0)/', $_SERVER["HTTP_USER_AGENT"] ) ) {
  81                         # IE 5.0 has probs with our caching
  82                         wfDebug( "-- bad client, not caching\n", false );
  83                         return;
  84                 }
  85                 if( $wgUser->getOption( "nocache" ) ) {
  86                         wfDebug( "USER DISABLED CACHE\n", false );
  87                         return;
  88                 }
  89
  90                 $lastmod = gmdate( "D, j M Y H:i:s", wfTimestamp2Unix( max( $timestamp, $wgUser->mTouched ) ) ) . " GMT";
  91
  92                 if( !empty( $_SERVER["HTTP_IF_MODIFIED_SINCE"] ) ) {
  93                         # IE sends sizes after the date like this:
  94                         # Wed, 20 Aug 2003 06:51:19 GMT; length=5202
  95                         # this breaks strtotime().
  96                         $modsince = preg_replace( '/;.*$/', '', $_SERVER["HTTP_IF_MODIFIED_SINCE"] );
  97                         $ismodsince = wfUnix2Timestamp( strtotime( $modsince ) );
  98                         wfDebug( "-- client send If-Modified-Since: " . $modsince . "\n", false );
  99                         wfDebug( "--  we might send Last-Modified : $lastmod\n", false );
 100
 101                         if( ($ismodsince >= $timestamp ) and $wgUser->validateCache( $ismodsince ) ) {
 102                                 # Make sure you're in a place you can leave when you call us!
 103                                 header( "HTTP/1.0 304 Not Modified" );
 104                                 $this->mLastModified = $lastmod;
 105                                 $this->sendCacheControl();
 106                                 wfDebug( "CACHED client: $ismodsince ; user: $wgUser->mTouched ; page: $timestamp\n", false );
 107                                 $this->disable();
 108                                 return true;
 109                         } else {
 110                                 wfDebug( "READY  client: $ismodsince ; user: $wgUser->mTouched ; page: $timestamp\n", false );
 111                                 $this->mLastModified = $lastmod;
 112                         }
 113                 } else {
 114                         wfDebug( "We're confused.\n", false );
 115                         $this->mLastModified = $lastmod;
 116                 }
 117         }
 118
 119         function getPageTitleActionText () {
 120                 global $action;
 121                 switch($action) {
 122                         case 'edit':
 123                                 return wfMsg('edit');
 124                         case 'history':
 125                                 return wfMsg('history_short');
 126                         case 'protect':
 127                                 return wfMsg('protect');
 128                         case 'unprotect':
 129                                 return wfMsg('unprotect');
 130                         case 'delete':
 131                                 return wfMsg('delete');
 132                         case 'watch':
 133                                 return wfMsg('watch');
 134                         case 'unwatch':
 135                                 return wfMsg('unwatch');
 136                         case 'submit':
 137                                 return wfMsg('preview');
 138                         case 'info':
 139                                 return wfMsg('info_short');
 140                         default:
 141                                 return '';
 142                 }
 143         }
 144         function setRobotpolicy( $str ) { $this->mRobotpolicy = $str; }
 145         function setHTMLTitle( $name ) {$this->mHTMLtitle = $name; }
 146         function setPageTitle( $name ) {
 147                 global $action;
 148                 $this->mPagetitle = $name;
 149                 if(!empty($action)) {
 150                         $taction =  $this->getPageTitleActionText();
 151                         if( !empty( $taction ) ) {
 152                                 $name .= " - $taction";
 153                         }
 154                 }
 155                 $this->setHTMLTitle( $name . " - " . wfMsg( "wikititlesuffix" ) );
 156         }
 157         function getHTMLTitle() { return $this->mHTMLtitle; }
 158         function getPageTitle() { return $this->mPagetitle; }
 159         function setSubtitle( $str ) { $this->mSubtitle = $str; }
 160         function getSubtitle() { return $this->mSubtitle; }
 161         function isArticle() { return $this->mIsarticle; }
 162         function setPrintable() { $this->mPrintable = true; }
 163         function isPrintable() { return $this->mPrintable; }
 164         function setSyndicated( $show = true ) { $this->mShowFeedLinks = $show; }
 165         function isSyndicated() { return $this->mShowFeedLinks; }
 166         function setOnloadHandler( $js ) { $this->mOnloadHandler = $js; }
 167         function getOnloadHandler() { return $this->mOnloadHandler; }
 168         function disable() { $this->mDoNothing = true; }
 169
 170         function setArticleRelated( $v )
 171         {
 172                 $this->mIsArticleRelated = $v;
 173                 if ( !$v ) {
 174                         $this->mIsarticle = false;
 175                 }
 176         }
 177         function setArticleFlag( $v ) {
 178                 $this->mIsarticle = $v;
 179                 if ( $v ) {
 180                         $this->mIsArticleRelated = $v;
 181                 }
 182         }
 183
 184         function isArticleRelated()
 185         {
 186                 return $this->mIsArticleRelated;
 187         }
 188
 189         function getLanguageLinks() {
 190                 return $this->mLanguageLinks;
 191         }
 192         function addLanguageLinks($newLinkArray) {
 193                 $this->mLanguageLinks += $newLinkArray;
 194         }
 195         function setLanguageLinks($newLinkArray) {
 196                 $this->mLanguageLinks = $newLinkArray;
 197         }
 198         function getCategoryLinks() {
 199                 return $this->mCategoryLinks;
 200         }
 201         function addCategoryLinks($newLinkArray) {
 202                 $this->mCategoryLinks += $newLinkArray;
 203         }
 204         function setCategoryLinks($newLinkArray) {
 205                 $this->mCategoryLinks += $newLinkArray;
 206         }
 207
 208         function suppressQuickbar() { $this->mSuppressQuickbar = true; }
 209         function isQuickbarSuppressed() { return $this->mSuppressQuickbar; }
 210
 211         function addHTML( $text ) { $this->mBodytext .= $text; }
 212         function debug( $text ) { $this->mDebugtext .= $text; }
 213
 214         function setParserOptions( $options )
 215         {
 216                 return wfSetVar( $this->mParserOptions, $options );
 217         }
 218
 219         # First pass--just handle <nowiki> sections, pass the rest off
 220         # to doWikiPass2() which does all the real work.
 221         #
 222         # $cacheArticle - assume this text is the main text for the given article
 223         #
 224         function addWikiText( $text, $linestart = true, $cacheArticle = NULL )
 225         {
 226                 global $wgParser, $wgParserCache, $wgUser, $wgTitle;
 227
 228                 $parserOutput = $wgParser->parse( $text, $wgTitle, $this->mParserOptions, $linestart );
 229                 if ( $cacheArticle ) {
 230                         $wgParserCache->save( $parserOutput, $cacheArticle, $wgUser );
 231                 }
 232
 233                 $this->mLanguageLinks += $parserOutput->getLanguageLinks();
 234                 $this->mCategoryLinks += $parserOutput->getCategoryLinks();
 235                 $this->addHTML( $parserOutput->getText() );
 236         }
 237
 238         function tryParserCache( $article, $user ) {
 239                 global $wgParserCache;
 240                 $parserOutput = $wgParserCache->get( $article, $user );
 241                 if ( $parserOutput !== false ) {
 242                         $this->mLanguageLinks += $parserOutput->getLanguageLinks();
 243                         $this->mCategoryLinks += $parserOutput->getCategoryLinks();
 244                         $this->addHTML( $parserOutput->getText() );
 245                         return true;
 246                 } else {
 247                         return false;
 248                 }
 249         }
 250
 251         # Set the maximum cache time on the Squid in seconds
 252         function setSquidMaxage( $maxage ) {
 253                 $this->mSquidMaxage = $maxage;
 254         }
 255
 256         # Use enableClientCache(false) to force it to send nocache headers
 257         function enableClientCache( $state ) {
 258                 return wfSetVar( $this->mEnableClientCache, $state );
 259         }
 260
 261         function sendCacheControl() {
 262                 global $wgUseSquid, $wgUseESI;
 263                 # FIXME: This header may cause trouble with some versions of Internet Explorer
 264                 header( "Vary: Accept-Encoding, Cookie" );
 265                 if( $this->mEnableClientCache ) {
 266                         if( $wgUseSquid && ! isset( $_COOKIE[ini_get( "session.name") ] ) &&
 267                           ! $this->isPrintable() && $this->mSquidMaxage != 0 )
 268                         {
 269                                 if ( $wgUseESI ) {
 270                                         # We'll purge the proxy cache explicitly, but require end user agents
 271                                         # to revalidate against the proxy on each visit.
 272                                         # Surrogate-Control controls our Squid, Cache-Control downstream caches
 273                                         wfDebug( "** proxy caching with ESI; {$this->mLastModified} **\n", false );
 274                                         # start with a shorter timeout for initial testing
 275                                         # header( 'Surrogate-Control: max-age=2678400+2678400, content="ESI/1.0"');
 276                                         header( 'Surrogate-Control: max-age='.$wgSquidMaxage.'+'.$this->mSquidMaxage.', content="ESI/1.0"');
 277                                         header( 'Cache-Control: s-maxage=0, must-revalidate, max-age=0' );
 278                                 } else {
 279                                         # We'll purge the proxy cache for anons explicitly, but require end user agents
 280                                         # to revalidate against the proxy on each visit.
 281                                         # IMPORTANT! The Squid needs to replace the Cache-Control header with
 282                                         # Cache-Control: s-maxage=0, must-revalidate, max-age=0
 283                                         wfDebug( "** local proxy caching; {$this->mLastModified} **\n", false );
 284                                         # start with a shorter timeout for initial testing
 285                                         # header( "Cache-Control: s-maxage=2678400, must-revalidate, max-age=0" );
 286                                         header( 'Cache-Control: s-maxage='.$this->mSquidMaxage.', must-revalidate, max-age=0' );
 287                                 }
 288                         } else {
 289                                 # We do want clients to cache if they can, but they *must* check for updates
 290                                 # on revisiting the page.
 291                                 wfDebug( "** private caching; {$this->mLastModified} **\n", false );
 292                                 header( "Expires: -1" );
 293                                 header( "Cache-Control: private, must-revalidate, max-age=0" );
 294                         }
 295                         if($this->mLastModified) header( "Last-modified: {$this->mLastModified}" );
 296                 } else {
 297                         wfDebug( "** no caching **\n", false );
 298
 299                         # In general, the absence of a last modified header should be enough to prevent
 300                         # the client from using its cache. We send a few other things just to make sure.
 301                         header( "Expires: -1" );
 302                         header( "Cache-Control: no-cache, no-store, max-age=0, must-revalidate" );
 303                         header( "Pragma: no-cache" );
 304                 }
 305         }
 306
 307         # Finally, all the text has been munged and accumulated into
 308         # the object, let's actually output it:
 309         #
 310         function output()
 311         {
 312                 global $wgUser, $wgLang, $wgDebugComments, $wgCookieExpiration;
 313                 global $wgInputEncoding, $wgOutputEncoding, $wgLanguageCode;
 314                 global $wgDebugRedirects, $wgMimeType, $wgProfiler;
 315                 if( $this->mDoNothing ){
 316                         return;
 317                 }
 318                 $fname = "OutputPage::output";
 319                 wfProfileIn( $fname );
 320
 321                 $sk = $wgUser->getSkin();
 322
 323                 if ( "" != $this->mRedirect ) {
 324                         if( substr( $this->mRedirect, 0, 4 ) != "http" ) {
 325                                 # Standards require redirect URLs to be absolute
 326                                 global $wgServer;
 327                                 $this->mRedirect = $wgServer . $this->mRedirect;
 328                         }
 329                         if( $this->mRedirectCode == '301') {
 330                                 if( !$wgDebugRedirects ) {
 331                                         header("HTTP/1.1 {$this->mRedirectCode} Moved Permanently");
 332                                 }
 333                                 $this->mLastModified = gmdate( "D, j M Y H:i:s" ) . " GMT";
 334                         }
 335
 336                         $this->sendCacheControl();
 337
 338                         if( $wgDebugRedirects ) {
 339                                 $url = htmlspecialchars( $this->mRedirect );
 340                                 print "<html>\n<head>\n<title>Redirect</title>\n</head>\n<body>\n";
 341                                 print "<p>Location: <a href=\"$url\">$url</a></p>\n";
 342                                 print "</body>\n</html>\n";
 343                         } else {
 344                                 header( "Location: {$this->mRedirect}" );
 345                         }
 346                         if ( isset( $wgProfiler ) ) { wfDebug( $wgProfiler->getOutput() ); }
 347                         return;
 348                 }
 349
 350
 351                 $this->sendCacheControl();
 352                 # Perform link colouring
 353                 $this->mBodytext = $this->parseLinkHolders();
 354
 355                 # Disable temporary placeholders, so that the skin produces HTML
 356                 $sk->postParseLinkColour( false );
 357
 358                 header( "Content-type: $wgMimeType; charset={$wgOutputEncoding}" );
 359                 header( "Content-language: {$wgLanguageCode}" );
 360
 361                 $exp = time() + $wgCookieExpiration;
 362                 foreach( $this->mCookies as $name => $val ) {
 363                         setcookie( $name, $val, $exp, "/" );
 364                 }
 365
 366                 $sk->outputPage( $this );
 367                 # flush();
 368         }
 369
 370         function out( $ins )
 371         {
 372                 global $wgInputEncoding, $wgOutputEncoding, $wgLang;
 373                 if ( 0 == strcmp( $wgInputEncoding, $wgOutputEncoding ) ) {
 374                         $outs = $ins;
 375                 } else {
 376                         $outs = $wgLang->iconv( $wgInputEncoding, $wgOutputEncoding, $ins );
 377                         if ( false === $outs ) { $outs = $ins; }
 378                 }
 379                 print $outs;
 380         }
 381
 382         function setEncodings()
 383         {
 384                 global $wgInputEncoding, $wgOutputEncoding;
 385                 global $wgUser, $wgLang;
 386
 387                 $wgInputEncoding = strtolower( $wgInputEncoding );
 388
 389                 if( $wgUser->getOption( 'altencoding' ) ) {
 390                         $wgLang->setAltEncoding();
 391                         return;
 392                 }
 393
 394                 if ( empty( $_SERVER['HTTP_ACCEPT_CHARSET'] ) ) {
 395                         $wgOutputEncoding = strtolower( $wgOutputEncoding );
 396                         return;
 397                 }
 398
 399                 /*
 400                 # This code is unused anyway!
 401                 # Commenting out. --bv 2003-11-15
 402
 403                 $a = explode( ",", $_SERVER['HTTP_ACCEPT_CHARSET'] );
 404                 $best = 0.0;
 405                 $bestset = "*";
 406
 407                 foreach ( $a as $s ) {
 408                         if ( preg_match( "/(.*);q=(.*)/", $s, $m ) ) {
 409                                 $set = $m[1];
 410                                 $q = (float)($m[2]);
 411                         } else {
 412                                 $set = $s;
 413                                 $q = 1.0;
 414                         }
 415                         if ( $q > $best ) {
 416                                 $bestset = $set;
 417                                 $best = $q;
 418                         }
 419                 }
 420                 #if ( "*" == $bestset ) { $bestset = "iso-8859-1"; }
 421                 if ( "*" == $bestset ) { $bestset = $wgOutputEncoding; }
 422                 $wgOutputEncoding = strtolower( $bestset );
 423
 424 # Disable for now
 425 #
 426                 */
 427                 $wgOutputEncoding = $wgInputEncoding;
 428         }
 429
 430         # Returns a HTML comment with the elapsed time since request.
 431         # This method has no side effects.
 432         function reportTime()
 433         {
 434                 global $wgRequestTime;
 435
 436                 $now = wfTime();
 437                 list( $usec, $sec ) = explode( " ", $wgRequestTime );
 438                 $start = (float)$sec + (float)$usec;
 439                 $elapsed = $now - $start;
 440
 441                 # Use real server name if available, so we know which machine
 442                 # in a server farm generated the current page.
 443                 if ( function_exists( "posix_uname" ) ) {
 444                         $uname = @posix_uname();
 445                 } else {
 446                         $uname = false;
 447                 }
 448                 if( is_array( $uname ) && isset( $uname['nodename'] ) ) {
 449                         $hostname = $uname['nodename'];
 450                 } else {
 451                         # This may be a virtual server.
 452                         $hostname = $_SERVER['SERVER_NAME'];
 453                 }
 454                 $com = sprintf( "<!-- Served by %s in %01.2f secs. -->",
 455                   $hostname, $elapsed );
 456                 return $com;
 457         }
 458
 459         # Note: these arguments are keys into wfMsg(), not text!
 460         #
 461         function errorpage( $title, $msg )
 462         {
 463                 global $wgTitle;
 464
 465                 $this->mDebugtext .= "Original title: " .
 466                   $wgTitle->getPrefixedText() . "\n";
 467                 $this->setPageTitle( wfMsg( $title ) );
 468                 $this->setHTMLTitle( wfMsg( "errorpagetitle" ) );
 469                 $this->setRobotpolicy( "noindex,nofollow" );
 470                 $this->setArticleRelated( false );
 471                 $this->enableClientCache( false );
 472                 $this->mRedirect = "";
 473
 474                 $this->mBodytext = "";
 475                 $this->addHTML( "<p>" . wfMsg( $msg ) . "</p>\n" );
 476                 $this->returnToMain( false );
 477
 478                 $this->output();
 479                 wfErrorExit();
 480         }
 481
 482         function sysopRequired()
 483         {
 484                 global $wgUser;
 485
 486                 $this->setPageTitle( wfMsg( "sysoptitle" ) );
 487                 $this->setHTMLTitle( wfMsg( "errorpagetitle" ) );
 488                 $this->setRobotpolicy( "noindex,nofollow" );
 489                 $this->setArticleRelated( false );
 490                 $this->mBodytext = "";
 491
 492                 $sk = $wgUser->getSkin();
 493                 $ap = $sk->makeKnownLink( wfMsg( "administrators" ), "" );
 494                 $this->addHTML( wfMsg( "sysoptext", $ap ) );
 495                 $this->returnToMain();
 496         }
 497
 498         function developerRequired()
 499         {
 500                 global $wgUser;
 501
 502                 $this->setPageTitle( wfMsg( "developertitle" ) );
 503                 $this->setHTMLTitle( wfMsg( "errorpagetitle" ) );
 504                 $this->setRobotpolicy( "noindex,nofollow" );
 505                 $this->setArticleRelated( false );
 506                 $this->mBodytext = "";
 507
 508                 $sk = $wgUser->getSkin();
 509                 $ap = $sk->makeKnownLink( wfMsg( "administrators" ), "" );
 510                 $this->addHTML( wfMsg( "developertext", $ap ) );
 511                 $this->returnToMain();
 512         }
 513
 514         function loginToUse()
 515         {
 516                 global $wgUser, $wgTitle, $wgLang;
 517
 518                 $this->setPageTitle( wfMsg( "loginreqtitle" ) );
 519                 $this->setHTMLTitle( wfMsg( "errorpagetitle" ) );
 520                 $this->setRobotpolicy( "noindex,nofollow" );
 521                 $this->setArticleFlag( false );
 522                 $this->mBodytext = "";
 523                 $this->addWikiText( wfMsg( "loginreqtext" ) );
 524
 525                 # We put a comment in the .html file so a Sysop can diagnose the page the
 526                 # user can't see.
 527                 $this->addHTML( "\n<!--" .
 528                                                 $wgLang->getNsText( $wgTitle->getNamespace() ) .
 529                                                 ":" .
 530                                                 $wgTitle->getDBkey() . "-->" );
 531                 $this->returnToMain();          # Flip back to the main page after 10 seconds.
 532         }
 533
 534         function databaseError( $fname, $sql, $error, $errno )
 535         {
 536                 global $wgUser, $wgCommandLineMode;
 537
 538                 $this->setPageTitle( wfMsgNoDB( "databaseerror" ) );
 539                 $this->setRobotpolicy( "noindex,nofollow" );
 540                 $this->setArticleRelated( false );
 541                 $this->enableClientCache( false );
 542                 $this->mRedirect = "";
 543
 544                 if ( $wgCommandLineMode ) {
 545                         $msg = wfMsgNoDB( "dberrortextcl", htmlspecialchars( $sql ),
 546                                                 htmlspecialchars( $fname ), $errno, htmlspecialchars( $error ) );
 547                 } else {
 548                         $msg = wfMsgNoDB( "dberrortext", htmlspecialchars( $sql ),
 549                                                 htmlspecialchars( $fname ), $errno, htmlspecialchars( $error ) );
 550                 }
 551
 552                 if ( $wgCommandLineMode || !is_object( $wgUser )) {
 553                         print "$msg\n";
 554                         wfErrorExit();
 555                 }
 556                 $sk = $wgUser->getSkin();
 557                 $shlink = $sk->makeKnownLink( wfMsgNoDB( "searchhelppage" ),
 558                   wfMsgNoDB( "searchingwikipedia" ) );
 559                 $msg = str_replace( "$5", $shlink, $msg );
 560                 $this->mBodytext = $msg;
 561                 $this->output();
 562                 wfErrorExit();
 563         }
 564
 565         function readOnlyPage( $source = null, $protected = false )
 566         {
 567                 global $wgUser, $wgReadOnlyFile;
 568
 569                 $this->setRobotpolicy( "noindex,nofollow" );
 570                 $this->setArticleRelated( false );
 571
 572                 if( $protected ) {
 573                         $this->setPageTitle( wfMsg( "viewsource" ) );
 574                         $this->addWikiText( wfMsg( "protectedtext" ) );
 575                 } else {
 576                         $this->setPageTitle( wfMsg( "readonly" ) );
 577                         $reason = file_get_contents( $wgReadOnlyFile );
 578                         $this->addWikiText( wfMsg( "readonlytext", $reason ) );
 579                 }
 580
 581                 if( is_string( $source ) ) {
 582                         if( strcmp( $source, "" ) == 0 ) {
 583                                 $source = wfMsg( "noarticletext" );
 584                         }
 585                         $rows = $wgUser->getOption( "rows" );
 586                         $cols = $wgUser->getOption( "cols" );
 587                         $text = "\n<textarea cols='$cols' rows='$rows' readonly='readonly'>" .
 588                                 htmlspecialchars( $source ) . "\n</textarea>";
 589                         $this->addHTML( $text );
 590                 }
 591
 592                 $this->returnToMain( false );
 593         }
 594
 595         function fatalError( $message )
 596         {
 597                 $this->setPageTitle( wfMsg( "internalerror" ) );
 598                 $this->setRobotpolicy( "noindex,nofollow" );
 599                 $this->setArticleRelated( false );
 600                 $this->enableClientCache( false );
 601                 $this->mRedirect = "";
 602
 603                 $this->mBodytext = $message;
 604                 $this->output();
 605                 wfErrorExit();
 606         }
 607
 608         function unexpectedValueError( $name, $val )
 609         {
 610                 $this->fatalError( wfMsg( "unexpected", $name, $val ) );
 611         }
 612
 613         function fileCopyError( $old, $new )
 614         {
 615                 $this->fatalError( wfMsg( "filecopyerror", $old, $new ) );
 616         }
 617
 618         function fileRenameError( $old, $new )
 619         {
 620                 $this->fatalError( wfMsg( "filerenameerror", $old, $new ) );
 621         }
 622
 623         function fileDeleteError( $name )
 624         {
 625                 $this->fatalError( wfMsg( "filedeleteerror", $name ) );
 626         }
 627
 628         function fileNotFoundError( $name )
 629         {
 630                 $this->fatalError( wfMsg( "filenotfound", $name ) );
 631         }
 632
 633         // return from error messages or notes
 634         //   auto:      automatically redirect the user after 10 seconds
 635         //   returnto:  page title to return to. Default is Main Page.
 636         function returnToMain( $auto = true, $returnto = NULL )
 637         {
 638                 global $wgUser, $wgOut, $wgRequest;
 639
 640                 if ( $returnto == NULL ) {
 641                         $returnto = $wgRequest->getText( 'returnto' );
 642                 }
 643
 644                 $sk = $wgUser->getSkin();
 645                 if ( "" == $returnto ) {
 646                         $returnto = wfMsg( "mainpage" );
 647                 }
 648                 $link = $sk->makeKnownLink( $returnto, "" );
 649
 650                 $r = wfMsg( "returnto", $link );
 651                 if ( $auto ) {
 652                         $titleObj = Title::newFromText( $returnto );
 653                         $wgOut->addMeta( "http:Refresh", "10;url=" . $titleObj->escapeFullURL() );
 654                 }
 655                 $wgOut->addHTML( "\n<p>$r</p>\n" );
 656         }
 657
 658         # This function takes the existing and broken links for the page
 659         # and uses the first 10 of them for META keywords
 660         function addMetaTags ()
 661         {
 662                 global $wgLinkCache , $wgOut ;
 663                 $good = array_keys ( $wgLinkCache->mGoodLinks ) ;
 664                 $bad = array_keys ( $wgLinkCache->mBadLinks ) ;
 665                 $a = array_merge ( $good , $bad ) ;
 666                 $a = array_slice ( $a , 0 , 10 ) ; # 10 keywords max
 667                 $a = implode ( "," , $a ) ;
 668                 $strip = array(
 669                         "/<.*?>/" => '',
 670                         "/[_]/" => ' '
 671                 );
 672                 $a = htmlspecialchars(preg_replace(array_keys($strip), array_values($strip),$a ));
 673
 674                 $wgOut->addMeta ( "KEYWORDS" , $a ) ;
 675         }
 676
 677         /* private */ function headElement()
 678         {
 679                 global $wgDocType, $wgDTD, $wgLanguageCode, $wgOutputEncoding, $wgMimeType;
 680                 global $wgUser, $wgLang, $wgRequest;
 681
 682                 $xml = ($wgMimeType == 'text/xml');
 683                 if( $xml ) {
 684                         $ret = "<" . "?xml version=\"1.0\" encoding=\"$wgOutputEncoding\" ?" . ">\n";
 685                 } else {
 686                         $ret = "";
 687                 }
 688
 689                 $ret .= "<!DOCTYPE html PUBLIC \"$wgDocType\"\n        \"$wgDTD\">\n";
 690
 691                 if ( "" == $this->mHTMLtitle ) {
 692                         $this->mHTMLtitle = wfMsg( "pagetitle", $this->mPagetitle );
 693                 }
 694                 if( $xml ) {
 695                         $xmlbits = "xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en\"";
 696                 } else {
 697                         $xmlbits = "";
 698                 }
 699                 $rtl = $wgLang->isRTL() ? " dir='RTL'" : "";
 700                 $ret .= "<html $xmlbits lang=\"$wgLanguageCode\" $rtl>\n";
 701                 $ret .= "<head>\n<title>" . htmlspecialchars( $this->mHTMLtitle ) . "</title>\n";
 702                 array_push( $this->mMetatags, array( "http:Content-type", "$wgMimeType; charset={$wgOutputEncoding}" ) );
 703
 704                 $ret .= $this->getHeadLinks();
 705                 global $wgStylePath;
 706                 if( $this->isPrintable() ) {
 707                         $media = "";
 708                 } else {
 709                         $media = "media='print'";
 710                 }
 711                 $printsheet = htmlspecialchars( "$wgStylePath/wikiprintable.css" );
 712                 $ret .= "<link rel='stylesheet' type='text/css' $media href='$printsheet' />\n";
 713
 714                 $sk = $wgUser->getSkin();
 715                 $ret .= $sk->getHeadScripts();
 716                 $ret .= $this->mScripts;
 717                 $ret .= $sk->getUserStyles();
 718
 719                 $ret .= "</head>\n";
 720                 return $ret;
 721         }
 722
 723         function getHeadLinks() {
 724                 global $wgRequest, $wgStylePath;
 725                 $ret = "";
 726                 foreach ( $this->mMetatags as $tag ) {
 727                         if ( 0 == strcasecmp( "http:", substr( $tag[0], 0, 5 ) ) ) {
 728                                 $a = "http-equiv";
 729                                 $tag[0] = substr( $tag[0], 5 );
 730                         } else {
 731                                 $a = "name";
 732                         }
 733                         $ret .= "<meta $a=\"{$tag[0]}\" content=\"{$tag[1]}\" />\n";
 734                 }
 735                 $p = $this->mRobotpolicy;
 736                 if ( "" == $p ) { $p = "index,follow"; }
 737                 $ret .= "<meta name=\"robots\" content=\"$p\" />\n";
 738
 739                 if ( count( $this->mKeywords ) > 0 ) {
 740                         $strip = array(
 741                                 "/<.*?>/" => '',
 742                                 "/[_]/" => ' '
 743                         );
 744                         $ret .= "<meta name=\"keywords\" content=\"" .
 745                           htmlspecialchars(preg_replace(array_keys($strip), array_values($strip),implode( ",", $this->mKeywords ))) . "\" />\n";
 746                 }
 747                 foreach ( $this->mLinktags as $tag ) {
 748                         $ret .= "<link";
 749                         foreach( $tag as $attr => $val ) {
 750                                 $ret .= " $attr=\"" . htmlspecialchars( $val ) . "\"";
 751                         }
 752                         $ret .= " />\n";
 753                 }
 754                 if( $this->isSyndicated() ) {
 755                         # FIXME: centralize the mime-type and name information in Feed.php
 756                         $link = $wgRequest->escapeAppendQuery( "feed=rss" );
 757                         $ret .= "<link rel='alternate' type='application/rss+xml' title='RSS 2.0' href='$link' />\n";
 758                         $link = $wgRequest->escapeAppendQuery( "feed=atom" );
 759                         $ret .= "<link rel='alternate' type='application/rss+atom' title='Atom 0.3' href='$link' />\n";
 760                 }
 761                 # FIXME: get these working
 762                 # $fix = htmlspecialchars( $wgStylePath . "/ie-png-fix.js" );
 763                 # $ret .= "<!--[if gte IE 5.5000]><script type='text/javascript' src='$fix'>< /script><![endif]-->";
 764                 return $ret;
 765         }
 766
 767         # Parse <!--LINK--> link placeholders to avoid using linkcache
 768         # Placeholders created in Skin::makeLinkObj()
 769         function parseLinkHolders()
 770         {
 771                 global $wgUser;
 772
 773                 $fname = 'OutputPage::parseLinkHolders';
 774                 wfProfileIn( $fname );
 775
 776                 # Get placeholders from body
 777                 preg_match_all( "/<!--LINK (.*?) (.*?) (.*?) (.*?)-->/", $this->mBodytext, $tmpLinks );
 778
 779                 if ( !empty( $tmpLinks[0] ) ) {
 780                         $dbr =& wfGetDB( DB_SLAVE );
 781                         $cur = $dbr->tableName( 'cur' );
 782                         $sk = $wgUser->getSkin();
 783                         $threshold = $wgUser->getOption('stubthreshold');
 784
 785                         $namespaces =& $tmpLinks[1];
 786                         $dbkeys =& $tmpLinks[2];
 787                         $queries =& $tmpLinks[3];
 788                         $texts =& $tmpLinks[4];
 789
 790                         # Sort by namespace
 791                         asort( $namespaces );
 792
 793                         # Generate query
 794                         foreach ( $namespaces as $key => $val ) {
 795                                 if ( !isset( $current ) ) {
 796                                         $current = $val;
 797                                         $query =  "SELECT cur_namespace, cur_title";
 798                                         if ( $threshold > 0 ) {
 799                                                 $query .= ", LENGTH(cur_text) AS cur_len, cur_is_redirect";
 800                                         }
 801                                         $query .= " FROM $cur WHERE (cur_namespace=$val AND cur_title IN(";
 802                                 } elseif ( $current != $val ) {
 803                                         $current = $val;
 804                                         $query .= ")) OR (cur_namespace=$val AND cur_title IN(";
 805                                 } else {
 806                                         $query .= ", ";
 807                                 }
 808
 809                                 $query .= $dbr->addQuotes( $dbkeys[$key] );
 810                         }
 811
 812                         $query .= "))";
 813
 814                         $res = $dbr->query( $query, $fname );
 815
 816                         # Fetch data and form into an associative array
 817                         # non-existent = broken
 818                         # 1 = known
 819                         # 2 = stub
 820                         $colours = array();
 821                         while ( $s = $dbr->fetchObject($res) ) {
 822                                 $key = $s->cur_namespace . ' ' . $s->cur_title;
 823                                 if ( $threshold >  0 ) {
 824                                         $size = $s->cur_len;
 825                                         if ( $s->cur_is_redirect || $s->cur_namespace != 0 || $length < $threshold ) {
 826                                                 $colours[$key] = 1;
 827                                         } else {
 828                                                 $colours[$key] = 2;
 829                                         }
 830                                         $colours[$key] = array( $s->cur_len, $s->cur_is_redirect );
 831                                 } else {
 832                                         $colours[$key] = 1;
 833                                 }
 834                         }
 835
 836                         # Construct search and replace arrays
 837                         $search = $replace = array();
 838                         foreach ( $namespaces as $key => $ns ) {
 839                                 $cKey = $ns . ' ' . $dbkeys[$key];
 840                                 $search[] = $tmpLinks[0][$key];
 841                                 $title = Title::makeTitle( $ns, $dbkeys[$key] );
 842                                 if ( empty( $colours[$cKey] ) ) {
 843                                         $replace[] = $sk->makeBrokenLinkObj( $title, $texts[$key], $queries[$key] );
 844                                 } elseif ( $colours[$cKey] == 1 ) {
 845                                         $replace[] = $sk->makeKnownLinkObj( $title, $texts[$key], $queries[$key] );
 846                                 } elseif ( $colours[$cKey] == 2 ) {
 847                                         $replace[] = $sk->makeStubLinkObj( $title, $texts[$key], $queries[$key] );
 848                                 }
 849                         }
 850
 851                         # Do the thing
 852                         $out = str_replace( $search, $replace, $this->mBodytext );
 853                 } else {
 854                         $out = $this->mBodytext;
 855                 }
 856
 857                 wfProfileOut( $fname );
 858                 return ( $out );
 859         }
 860 }
 861
 862 }
 863 ?>