includes/GlobalFunctions.php

   1 <?
   2 # Global functions used everywhere
   3
   4 $wgNumberOfArticles = -1; # Unset
   5 $wgTotalViews = -1;
   6 $wgTotalEdits = -1;
   7
   8 global $IP;
   9 include_once( "$IP/DatabaseFunctions.php" );
  10 include_once( "$IP/UpdateClasses.php" );
  11 include_once( "$IP/LogPage.php" );
  12
  13 # PHP 4.1+ has array_key_exists, PHP 4.0.6 has key_exists instead, and earlier
  14 # versions of PHP have neither. So we roll our own. Note that this
  15 # function will return false even for keys that exist but whose associated
  16 # value is NULL.
  17 #
  18 if ( phpversion() == "4.0.6" ) {
  19         function array_key_exists( $k, $a ) {
  20                 return key_exists( $k, $a );
  21         }
  22 } else if (phpversion() < "4.1") {
  23         function array_key_exists( $k, $a ) {
  24                 return isset($a[$k]);
  25         }
  26 }
  27
  28 $wgRandomSeeded = false;
  29
  30 function wfSeedRandom()
  31 {
  32         global $wgRandomSeeded;
  33
  34         if ( ! $wgRandomSeeded ) {
  35                 $seed = hexdec(substr(md5(microtime()),-8)) & 0x7fffffff;
  36                 mt_srand( $seed );
  37                 $wgRandomSeeded = true;
  38         }
  39 }
  40
  41 function wfLocalUrl( $a, $q = "" )
  42 {
  43         global $wgServer, $wgScript, $wgArticlePath;
  44
  45         $a = str_replace( " ", "_", $a );
  46         #$a = wfUrlencode( $a ); # This stuff is _already_ URL-encoded.
  47
  48         if ( "" == $a ) {
  49                 if( "" == $q ) {
  50                         $a = $wgScript;
  51                 } else {
  52                         $a = "{$wgScript}?{$q}";
  53                 }
  54         } else if ( "" == $q ) {
  55                 $a = str_replace( "$1", $a, $wgArticlePath );
  56         } else {
  57                 $a = "{$wgScript}?title={$a}&{$q}";
  58         }
  59         return $a;
  60 }
  61
  62 function wfLocalUrlE( $a, $q = "" )
  63 {
  64         return wfEscapeHTML( wfLocalUrl( $a, $q ) );
  65 }
  66
  67 function wfFullUrl( $a, $q = "" ) {
  68         global $wgServer;
  69         return $wgServer . wfLocalUrl( $a, $q );
  70 }
  71
  72 function wfFullUrlE( $a, $q = "" ) {
  73         return wfEscapeHTML( wfFullUrl( $a, $q ) );
  74 }
  75
  76 function wfImageUrl( $img )
  77 {
  78         global $wgUploadPath;
  79
  80         $nt = Title::newFromText( $img );
  81         $name = $nt->getDBkey();
  82         $hash = md5( $name );
  83
  84         $url = "{$wgUploadPath}/" . $hash{0} . "/" .
  85           substr( $hash, 0, 2 ) . "/{$name}";
  86         return wfUrlencode( $url );
  87 }
  88
  89 function wfImageArchiveUrl( $name )
  90 {
  91         global $wgUploadPath;
  92
  93         $hash = md5( substr( $name, 15) );
  94         $url = "{$wgUploadPath}/archive/" . $hash{0} . "/" .
  95           substr( $hash, 0, 2 ) . "/{$name}";
  96         return $url;
  97 }
  98
  99 function wfUrlencode ( $s )
 100 {
 101         $ulink = urlencode( $s );
 102         $ulink = preg_replace( "/%3[Aa]/", ":", $ulink );
 103         $ulink = preg_replace( "/%2[Ff]/", "/", $ulink );
 104         return $ulink;
 105 }
 106
 107 function wfUtf8Sequence($codepoint) {
 108         if($codepoint <     0x80) return chr($codepoint);
 109         if($codepoint <    0x800) return chr($codepoint >>  6 & 0x3f | 0xc0) .
 110                                      chr($codepoint       & 0x3f | 0x80);
 111     if($codepoint <  0x10000) return chr($codepoint >> 12 & 0x0f | 0xe0) .
 112                                      chr($codepoint >>  6 & 0x3f | 0x80) .
 113                                      chr($codepoint       & 0x3f | 0x80);
 114         if($codepoint < 0x100000) return chr($codepoint >> 18 & 0x07 | 0xf0) . # Double-check this
 115                                          chr($codepoint >> 12 & 0x3f | 0x80) .
 116                                      chr($codepoint >>  6 & 0x3f | 0x80) .
 117                                      chr($codepoint       & 0x3f | 0x80);
 118         # Doesn't yet handle outside the BMP
 119         return "&#$codepoint;";
 120 }
 121
 122 function wfMungeToUtf8($string) {
 123         global $wgInputEncoding; # This is debatable
 124         #$string = iconv($wgInputEncoding, "UTF-8", $string);
 125         $string = preg_replace ( '/&#([0-9]+);/e', 'wfUtf8Sequence($1)', $string );
 126         $string = preg_replace ( '/&#x([0-9a-f]+);/ie', 'wfUtf8Sequence(0x$1)', $string );
 127         # Should also do named entities here
 128         return $string;
 129 }
 130
 131 function wfDebug( $text, $logonly = false )
 132 {
 133         global $wgOut, $wgDebugLogFile, $wgDebugComments;
 134
 135         if ( $wgDebugComments && !$logonly ) {
 136                 $wgOut->debug( $text );
 137         }
 138         if ( "" != $wgDebugLogFile ) {
 139                 error_log( $text, 3, $wgDebugLogFile );
 140         }
 141 }
 142
 143 if( !isset( $wgProfiling ) )
 144         $wgProfiling = false;
 145 $wgProfileStack = array();
 146 $wgProfileWorkStack = array();
 147
 148 if( $wgProfiling ) {
 149         function wfProfileIn( $functionname )
 150         {
 151                 global $wgProfileStack, $wgProfileWorkStack;
 152                 array_push( $wgProfileWorkStack, "$functionname " .
 153                         count( $wgProfileWorkStack ) . " " . microtime() );
 154         }
 155
 156         function wfProfileOut() {
 157                 global $wgProfileStack, $wgProfileWorkStack;
 158                 $bit = array_pop( $wgProfileWorkStack );
 159                 $bit .= " " . microtime();
 160                 array_push( $wgProfileStack, $bit );
 161         }
 162 } else {
 163         function wfProfileIn( $functionname ) { }
 164         function wfProfileOut( ) { }
 165 }
 166
 167 function wfReadOnly()
 168 {
 169         global $wgReadOnlyFile;
 170
 171         if ( "" == $wgReadOnlyFile ) { return false; }
 172         return is_file( $wgReadOnlyFile );
 173 }
 174
 175 $wgReplacementKeys = array( "$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", "$9" );
 176 function wfMsg( $key )
 177 {
 178         global $wgLang, $wgReplacementKeys;
 179         $message = $wgLang->getMessage( $key );
 180
 181         if ( $message{0} == ":" ) {
 182                 # Get message from the database
 183                 $message = substr( $message, 1 );
 184                 $title = Title::newFromText( $message );
 185                 $dbKey = $title->getDBkey();
 186                 $ns = $title->getNamespace();
 187                 $sql = "SELECT cur_text FROM cur WHERE cur_namespace=$ns AND cur_title='$dbKey'";
 188                 $res = wfQuery( $sql, DB_READ, $fname );
 189                 if( ( $s = wfFetchObject( $res ) ) and ( $s->cur_text != "" ) ) {
 190                         $message = $s->cur_text;
 191                         # filter out a comment at the top if there is one
 192                         $commentPos = strpos( $message, "__START__" );
 193                         if ( $commentPos !== false ) {
 194                                 $message = substr( $message, $commentPos + strlen( "__START__" ) );
 195                                 wfDebug( "Comment filtered at pos $commentPos, \"$message\"\n" );
 196                         }
 197                 } else {
 198                         # if the page doesn't exist, just make a link to where it should be
 199                         $message = "[[$message]]";
 200                 }
 201                 wfFreeResult( $res );
 202         }
 203         if( func_num_args() > 1 ) {
 204                 $reps = func_get_args();
 205                 array_shift( $reps );
 206                 $message = str_replace( $wgReplacementKeys, $reps, $message );
 207         }
 208
 209         if ( "" == $message ) {
 210                 # Let's at least _try_ to be graceful about this.
 211                 return "&lt;$key&gt;";
 212         }
 213         return $message;
 214 }
 215
 216 function wfCleanFormFields( $fields )
 217 {
 218         global $HTTP_POST_VARS;
 219         global $wgInputEncoding, $wgOutputEncoding, $wgEditEncoding, $wgLang;
 220
 221         if ( get_magic_quotes_gpc() ) {
 222                 foreach ( $fields as $fname ) {
 223                         if ( isset( $HTTP_POST_VARS[$fname] ) ) {
 224                                 $HTTP_POST_VARS[$fname] = stripslashes(
 225                                   $HTTP_POST_VARS[$fname] );
 226                         }
 227                         global ${$fname};
 228                         if ( isset( ${$fname} ) ) {
 229                                 ${$fname} = stripslashes( ${$fname} );
 230                         }
 231                 }
 232         }
 233         $enc = $wgOutputEncoding;
 234         if( $wgEditEncoding != "") $enc = $wgEditEncoding;
 235         if ( $enc != $wgInputEncoding ) {
 236                 foreach ( $fields as $fname ) {
 237                         if ( isset( $HTTP_POST_VARS[$fname] ) ) {
 238                                 $HTTP_POST_VARS[$fname] = $wgLang->iconv(
 239                                   $wgOutputEncoding, $wgInputEncoding,
 240                                   $HTTP_POST_VARS[$fname] );
 241                         }
 242                         global ${$fname};
 243                         if ( isset( ${$fname} ) ) {
 244                                 ${$fname} = $wgLang->iconv(
 245                                   $enc, $wgInputEncoding, ${$fname} );
 246                         }
 247                 }
 248         }
 249 }
 250
 251 function wfMungeQuotes( $in )
 252 {
 253         $out = str_replace( "%", "%25", $in );
 254         $out = str_replace( "'", "%27", $out );
 255         $out = str_replace( "\"", "%22", $out );
 256         return $out;
 257 }
 258
 259 function wfDemungeQuotes( $in )
 260 {
 261         $out = str_replace( "%22", "\"", $in );
 262         $out = str_replace( "%27", "'", $out );
 263         $out = str_replace( "%25", "%", $out );
 264         return $out;
 265 }
 266
 267 function wfCleanQueryVar( $var )
 268 {
 269         global $wgLang;
 270         if ( get_magic_quotes_gpc() ) {
 271                 $var = stripslashes( $var );
 272         }
 273         return $wgLang->recodeInput( $var );
 274 }
 275
 276 function wfSpecialPage()
 277 {
 278         global $wgUser, $wgOut, $wgTitle, $wgLang;
 279
 280         /* FIXME: this list probably shouldn't be language-specific, per se */
 281         $validSP = $wgLang->getValidSpecialPages();
 282         $sysopSP = $wgLang->getSysopSpecialPages();
 283         $devSP = $wgLang->getDeveloperSpecialPages();
 284
 285         $wgOut->setArticleFlag( false );
 286         $wgOut->setRobotpolicy( "noindex,follow" );
 287
 288         $par = NULL;
 289         list($t, $par) = split( "/", $wgTitle->getDBkey(), 2 );
 290
 291         if ( array_key_exists( $t, $validSP ) ||
 292           ( $wgUser->isSysop() && array_key_exists( $t, $sysopSP ) ) ||
 293           ( $wgUser->isDeveloper() && array_key_exists( $t, $devSP ) ) ) {
 294                 if($par !== NULL)
 295                         $wgTitle = Title::makeTitle( Namespace::getSpecial(), $t );
 296
 297                 $wgOut->setPageTitle( wfMsg( strtolower( $wgTitle->getText() ) ) );
 298
 299                 $inc = "Special" . $t . ".php";
 300                 include_once( $inc );
 301                 $call = "wfSpecial" . $t;
 302                 $call( $par );
 303         } else if ( array_key_exists( $t, $sysopSP ) ) {
 304                 $wgOut->sysopRequired();
 305         } else if ( array_key_exists( $t, $devSP ) ) {
 306                 $wgOut->developerRequired();
 307         } else {
 308                 $wgOut->errorpage( "nosuchspecialpage", "nospecialpagetext" );
 309         }
 310 }
 311
 312 function wfSearch( $s )
 313 {
 314         $se = new SearchEngine( wfCleanQueryVar( $s ) );
 315         $se->showResults();
 316 }
 317
 318 function wfGo( $s )
 319 { # pick the nearest match
 320         $se = new SearchEngine( wfCleanQueryVar( $s ) );
 321         $se->goResult();
 322 }
 323
 324 function wfNumberOfArticles()
 325 {
 326         global $wgNumberOfArticles;
 327
 328         wfLoadSiteStats();
 329         return $wgNumberOfArticles;
 330 }
 331
 332 /* private */ function wfLoadSiteStats()
 333 {
 334         global $wgNumberOfArticles, $wgTotalViews, $wgTotalEdits;
 335         if ( -1 != $wgNumberOfArticles ) return;
 336
 337         $sql = "SELECT ss_total_views, ss_total_edits, ss_good_articles " .
 338           "FROM site_stats WHERE ss_row_id=1";
 339         $res = wfQuery( $sql, DB_READ, "wfLoadSiteStats" );
 340
 341         if ( 0 == wfNumRows( $res ) ) { return; }
 342         else {
 343                 $s = wfFetchObject( $res );
 344                 $wgTotalViews = $s->ss_total_views;
 345                 $wgTotalEdits = $s->ss_total_edits;
 346                 $wgNumberOfArticles = $s->ss_good_articles;
 347         }
 348 }
 349
 350 function wfEscapeHTML( $in )
 351 {
 352         return str_replace(
 353                 array( "&", "\"", ">", "<" ),
 354                 array( "&amp;", "&quot;", "&gt;", "&lt;" ),
 355                 $in );
 356 }
 357
 358 function wfEscapeHTMLTagsOnly( $in ) {
 359         return str_replace(
 360                 array( "\"", ">", "<" ),
 361                 array( "&quot;", "&gt;", "&lt;" ),
 362                 $in );
 363 }
 364
 365 function wfUnescapeHTML( $in )
 366 {
 367         $in = str_replace( "&lt;", "<", $in );
 368         $in = str_replace( "&gt;", ">", $in );
 369         $in = str_replace( "&quot;", "\"", $in );
 370         $in = str_replace( "&amp;", "&", $in );
 371         return $in;
 372 }
 373
 374 function wfImageDir( $fname )
 375 {
 376         global $wgUploadDirectory;
 377
 378         $hash = md5( $fname );
 379         $oldumask = umask(0);
 380         $dest = $wgUploadDirectory . "/" . $hash{0};
 381         if ( ! is_dir( $dest ) ) { mkdir( $dest, 0777 ); }
 382         $dest .= "/" . substr( $hash, 0, 2 );
 383         if ( ! is_dir( $dest ) ) { mkdir( $dest, 0777 ); }
 384
 385         umask( $oldumask );
 386         return $dest;
 387 }
 388
 389 function wfImageArchiveDir( $fname )
 390 {
 391         global $wgUploadDirectory;
 392
 393         $hash = md5( $fname );
 394         $oldumask = umask(0);
 395         $archive = "{$wgUploadDirectory}/archive";
 396         if ( ! is_dir( $archive ) ) { mkdir( $archive, 0777 ); }
 397         $archive .= "/" . $hash{0};
 398         if ( ! is_dir( $archive ) ) { mkdir( $archive, 0777 ); }
 399         $archive .= "/" . substr( $hash, 0, 2 );
 400         if ( ! is_dir( $archive ) ) { mkdir( $archive, 0777 ); }
 401
 402         umask( $oldumask );
 403         return $archive;
 404 }
 405
 406 function wfRecordUpload( $name, $oldver, $size, $desc )
 407 {
 408         global $wgUser, $wgLang, $wgTitle, $wgOut, $wgDeferredUpdateList;
 409         global $wgUseCopyrightUpload , $wpUploadCopyStatus , $wpUploadSource ;
 410
 411         $fname = "wfRecordUpload";
 412
 413         $sql = "SELECT img_name,img_size,img_timestamp,img_description,img_user," .
 414           "img_user_text FROM image WHERE img_name='" . wfStrencode( $name ) . "'";
 415         $res = wfQuery( $sql, DB_READ, $fname );
 416
 417         $now = wfTimestampNow();
 418         $won = wfInvertTimestamp( $now );
 419
 420         if ( $wgUseCopyrightUpload )
 421           {
 422             $textdesc = "== " . wfMsg ( "filedesc" ) . " ==\n" . $desc . "\n" .
 423               "== " . wfMsg ( "filestatus" ) . " ==\n" . $wpUploadCopyStatus . "\n" .
 424               "== " . wfMsg ( "filesource" ) . " ==\n" . $wpUploadSource ;
 425           }
 426         else $textdesc = $desc ;
 427
 428         if ( 0 == wfNumRows( $res ) ) {
 429                 $sql = "INSERT INTO image (img_name,img_size,img_timestamp," .
 430                   "img_description,img_user,img_user_text) VALUES ('" .
 431                   wfStrencode( $name ) . "',{$size},'{$now}','" .
 432                   wfStrencode( $desc ) . "', '" . $wgUser->getID() .
 433                   "', '" . wfStrencode( $wgUser->getName() ) . "')";
 434                 wfQuery( $sql, DB_WRITE, $fname );
 435
 436                 $sql = "SELECT cur_id,cur_text FROM cur WHERE cur_namespace=" .
 437                   Namespace::getImage() . " AND cur_title='" .
 438                   wfStrencode( $name ) . "'";
 439                 $res = wfQuery( $sql, DB_READ, $fname );
 440                 if ( 0 == wfNumRows( $res ) ) {
 441             $common =
 442                           Namespace::getImage() . ",'" .
 443                           wfStrencode( $name ) . "','" .
 444                           wfStrencode( $desc ) . "','" . $wgUser->getID() . "','" .
 445                           wfStrencode( $wgUser->getName() ) . "','" . $now .
 446                           "',1";
 447                         $sql = "INSERT INTO cur (cur_namespace,cur_title," .
 448                           "cur_comment,cur_user,cur_user_text,cur_timestamp,cur_is_new," .
 449                           "cur_text,inverse_timestamp,cur_touched) VALUES (" .
 450                           $common .
 451                           ",'" . wfStrencode( $textdesc ) . "','{$won}','{$now}')";
 452                         wfQuery( $sql, DB_WRITE, $fname );
 453                         $id = wfInsertId() or 0; # We should throw an error instead
 454                         $sql = "INSERT INTO recentchanges (rc_namespace,rc_title,
 455                                 rc_comment,rc_user,rc_user_text,rc_timestamp,rc_new,
 456                                 rc_cur_id,rc_cur_time) VALUES ({$common},{$id},'{$now}')";
 457             wfQuery( $sql, DB_WRITE, $fname );
 458                         $u = new SearchUpdate( $id, $name, $desc );
 459                         $u->doUpdate();
 460                 }
 461         } else {
 462                 $s = wfFetchObject( $res );
 463
 464                 $sql = "INSERT INTO oldimage (oi_name,oi_archive_name,oi_size," .
 465                   "oi_timestamp,oi_description,oi_user,oi_user_text) VALUES ('" .
 466                   wfStrencode( $s->img_name ) . "','" .
 467                   wfStrencode( $oldver ) .
 468                   "',{$s->img_size},'{$s->img_timestamp}','" .
 469                   wfStrencode( $s->img_description ) . "','" .
 470                   wfStrencode( $s->img_user ) . "','" .
 471                   wfStrencode( $s->img_user_text) . "')";
 472                 wfQuery( $sql, DB_WRITE, $fname );
 473
 474                 $sql = "UPDATE image SET img_size={$size}," .
 475                   "img_timestamp='" . wfTimestampNow() . "',img_user='" .
 476                   $wgUser->getID() . "',img_user_text='" .
 477                   wfStrencode( $wgUser->getName() ) . "', img_description='" .
 478                   wfStrencode( $desc ) . "' WHERE img_name='" .
 479                   wfStrencode( $name ) . "'";
 480                 wfQuery( $sql, DB_WRITE, $fname );
 481
 482                 $sql = "UPDATE cur SET cur_touched='{$now}' WHERE cur_namespace=" .
 483                   Namespace::getImage() . " AND cur_title='" .
 484                   wfStrencode( $name ) . "'";
 485                 wfQuery( $sql, DB_WRITE, $fname );
 486         }
 487
 488         $log = new LogPage( wfMsg( "uploadlogpage" ), wfMsg( "uploadlogpagetext" ) );
 489         $da = str_replace( "$1", "[[:" . $wgLang->getNsText(
 490           Namespace::getImage() ) . ":{$name}|{$name}]]",
 491           wfMsg( "uploadedimage" ) );
 492         $ta = str_replace( "$1", $name, wfMsg( "uploadedimage" ) );
 493         $log->addEntry( $da, $desc, $ta );
 494 }
 495
 496
 497 /* Some generic result counters, pulled out of SearchEngine */
 498
 499 function wfShowingResults( $offset, $limit )
 500 {
 501         $top = str_replace( "$1", $limit, wfMsg( "showingresults" ) );
 502         $top = str_replace( "$2", $offset+1, $top );
 503         return $top;
 504 }
 505
 506 function wfShowingResultsNum( $offset, $limit, $num )
 507 {
 508         $top = str_replace( "$1", $limit, wfMsg( "showingresultsnum" ) );
 509         $top = str_replace( "$2", $offset+1, $top );
 510         $top = str_replace( "$3", $num, $top );
 511         return $top;
 512 }
 513
 514 function wfViewPrevNext( $offset, $limit, $link, $query = "" )
 515 {
 516         global $wgUser;
 517         $prev = str_replace( "$1", $limit, wfMsg( "prevn" ) );
 518         $next = str_replace( "$1", $limit, wfMsg( "nextn" ) );
 519
 520         $sk = $wgUser->getSkin();
 521         if ( 0 != $offset ) {
 522                 $po = $offset - $limit;
 523                 if ( $po < 0 ) { $po = 0; }
 524                 $q = "limit={$limit}&offset={$po}";
 525                 if ( "" != $query ) { $q .= "&{$query}"; }
 526                 $plink = "<a href=\"" . wfLocalUrlE( $link, $q ) . "\">{$prev}</a>";
 527         } else { $plink = $prev; }
 528
 529         $no = $offset + $limit;
 530         $q = "limit={$limit}&offset={$no}";
 531         if ( "" != $query ) { $q .= "&{$query}"; }
 532
 533         $nlink = "<a href=\"" . wfLocalUrlE( $link, $q ) . "\">{$next}</a>";
 534         $nums = wfNumLink( $offset, 20, $link , $query ) . " | " .
 535           wfNumLink( $offset, 50, $link, $query ) . " | " .
 536           wfNumLink( $offset, 100, $link, $query ) . " | " .
 537           wfNumLink( $offset, 250, $link, $query ) . " | " .
 538           wfNumLink( $offset, 500, $link, $query );
 539
 540         $sl = str_replace( "$1", $plink, wfMsg( "viewprevnext" ) );
 541         $sl = str_replace( "$2", $nlink, $sl );
 542         $sl = str_replace( "$3", $nums, $sl );
 543         return $sl;
 544 }
 545
 546 function wfNumLink( $offset, $limit, $link, $query = "" )
 547 {
 548         global $wgUser;
 549         if ( "" == $query ) { $q = ""; }
 550         else { $q = "{$query}&"; }
 551         $q .= "limit={$limit}&offset={$offset}";
 552
 553         $s = "<a href=\"" . wfLocalUrlE( $link, $q ) . "\">{$limit}</a>";
 554         return $s;
 555 }
 556
 557 function wfClientAcceptsGzip() {
 558         global $wgUseGzip;
 559         if( $wgUseGzip ) {
 560                 # FIXME: we may want to blacklist some broken browsers
 561                 if( preg_match(
 562                         '/\bgzip(?:;(q)=([0-9]+(?:\.[0-9]+)))?\b/',
 563                         $_SERVER["HTTP_ACCEPT_ENCODING"],
 564                         $m ) ) {
 565                         if( ( $m[1] == "q" ) && ( $m[2] == 0 ) ) return false;
 566                         wfDebug( " accepts gzip\n" );
 567                         return true;
 568                 }
 569         }
 570         return false;
 571 }
 572
 573 # Yay, more global functions!
 574 function wfCheckLimits( $deflimit = 50, $optionname = "rclimit" ) {
 575         global $wgUser;
 576
 577         $limit = (int)$_REQUEST['limit'];
 578         if( $limit < 0 ) $limit = 0;
 579         if( ( $limit == 0 ) && ( $optionname != "" ) ) {
 580                 $limit = (int)$wgUser->getOption( $optionname );
 581         }
 582         if( $limit <= 0 ) $limit = $deflimit;
 583         if( $limit > 5000 ) $limit = 5000; # We have *some* limits...
 584
 585         $offset = (int)$_REQUEST['offset'];
 586         $offset = (int)$offset;
 587         if( $offset < 0 ) $offset = 0;
 588         if( $offset > 65000 ) $offset = 65000; # do we need a max? what?
 589
 590         return array( $limit, $offset );
 591 }
 592
 593 ?>