includes/GlobalFunctions.php

   1 <?
   2 # Global functions used everywhere
   3
   4 $wgNumberOfArticles = -1; # Unset
   5 $wgTotalViews = -1;
   6 $wgTotalEdits = -1;
   7
   8 include_once( "DatabaseFunctions.php" );
   9 include_once( "UpdateClasses.php" );
  10 include_once( "LogPage.php" );
  11
  12 /*
  13  * Compatibility functions
  14  */
  15
  16 # PHP <4.3.x is not actively supported; 4.1.x and 4.2.x might or might not work.
  17 # <4.1.x will not work, as we use a number of features introduced in 4.1.0
  18 # such as the new autoglobals.
  19
  20 if( !function_exists('iconv') ) {
  21         # iconv support is not in the default configuration and so may not be present.
  22         # Assume will only ever use utf-8 and iso-8859-1.
  23         # This will *not* work in all circumstances.
  24         function iconv( $from, $to, $string ) {
  25                 if(strcasecmp( $from, $to ) == 0) return $string;
  26                 if(strcasecmp( $from, "utf-8" ) == 0) return utf8_decode( $string );
  27                 if(strcasecmp( $to, "utf-8" ) == 0) return utf8_encode( $string );
  28                 return $string;
  29         }
  30 }
  31
  32 if( !function_exists('file_get_contents') ) {
  33         # Exists in PHP 4.3.0+
  34         function file_get_contents( $filename ) {
  35                 return implode( "", file( $filename ) );
  36         }
  37 }
  38
  39 $wgRandomSeeded = false;
  40
  41 function wfSeedRandom()
  42 {
  43         global $wgRandomSeeded;
  44
  45         if ( ! $wgRandomSeeded ) {
  46                 $seed = hexdec(substr(md5(microtime()),-8)) & 0x7fffffff;
  47                 mt_srand( $seed );
  48                 $wgRandomSeeded = true;
  49         }
  50 }
  51
  52 function wfLocalUrl( $a, $q = "" )
  53 {
  54         global $wgServer, $wgScript, $wgArticlePath;
  55
  56         $a = str_replace( " ", "_", $a );
  57         #$a = wfUrlencode( $a ); # This stuff is _already_ URL-encoded.
  58
  59         if ( "" == $a ) {
  60                 if( "" == $q ) {
  61                         $a = $wgScript;
  62                 } else {
  63                         $a = "{$wgScript}?{$q}";
  64                 }
  65         } else if ( "" == $q ) {
  66                 $a = str_replace( "$1", $a, $wgArticlePath );
  67         } else {
  68                 $a = "{$wgScript}?title={$a}&{$q}";
  69         }
  70         return $a;
  71 }
  72
  73 function wfLocalUrlE( $a, $q = "" )
  74 {
  75         return wfEscapeHTML( wfLocalUrl( $a, $q ) );
  76 }
  77
  78 function wfFullUrl( $a, $q = "" ) {
  79         global $wgServer;
  80         return $wgServer . wfLocalUrl( $a, $q );
  81 }
  82
  83 function wfFullUrlE( $a, $q = "" ) {
  84         return wfEscapeHTML( wfFullUrl( $a, $q ) );
  85 }
  86
  87 function wfImageUrl( $img )
  88 {
  89         global $wgUploadPath;
  90
  91         $nt = Title::newFromText( $img );
  92         if( !$nt ) return "";
  93
  94         $name = $nt->getDBkey();
  95         $hash = md5( $name );
  96
  97         $url = "{$wgUploadPath}/" . $hash{0} . "/" .
  98           substr( $hash, 0, 2 ) . "/{$name}";
  99         return wfUrlencode( $url );
 100 }
 101
 102 function wfImageArchiveUrl( $name )
 103 {
 104         global $wgUploadPath;
 105
 106         $hash = md5( substr( $name, 15) );
 107         $url = "{$wgUploadPath}/archive/" . $hash{0} . "/" .
 108           substr( $hash, 0, 2 ) . "/{$name}";
 109         return $url;
 110 }
 111
 112 function wfUrlencode ( $s )
 113 {
 114         $ulink = urlencode( $s );
 115         $ulink = preg_replace( "/%3[Aa]/", ":", $ulink );
 116         $ulink = preg_replace( "/%2[Ff]/", "/", $ulink );
 117         return $ulink;
 118 }
 119
 120 function wfUtf8Sequence($codepoint) {
 121         if($codepoint <     0x80) return chr($codepoint);
 122         if($codepoint <    0x800) return chr($codepoint >>  6 & 0x3f | 0xc0) .
 123                                      chr($codepoint       & 0x3f | 0x80);
 124     if($codepoint <  0x10000) return chr($codepoint >> 12 & 0x0f | 0xe0) .
 125                                      chr($codepoint >>  6 & 0x3f | 0x80) .
 126                                      chr($codepoint       & 0x3f | 0x80);
 127         if($codepoint < 0x100000) return chr($codepoint >> 18 & 0x07 | 0xf0) . # Double-check this
 128                                          chr($codepoint >> 12 & 0x3f | 0x80) .
 129                                      chr($codepoint >>  6 & 0x3f | 0x80) .
 130                                      chr($codepoint       & 0x3f | 0x80);
 131         # Doesn't yet handle outside the BMP
 132         return "&#$codepoint;";
 133 }
 134
 135 function wfMungeToUtf8($string) {
 136         global $wgInputEncoding; # This is debatable
 137         #$string = iconv($wgInputEncoding, "UTF-8", $string);
 138         $string = preg_replace ( '/&#([0-9]+);/e', 'wfUtf8Sequence($1)', $string );
 139         $string = preg_replace ( '/&#x([0-9a-f]+);/ie', 'wfUtf8Sequence(0x$1)', $string );
 140         # Should also do named entities here
 141         return $string;
 142 }
 143
 144 function wfDebug( $text, $logonly = false )
 145 {
 146         global $wgOut, $wgDebugLogFile, $wgDebugComments, $wgProfileOnly;
 147
 148         if ( $wgDebugComments && !$logonly ) {
 149                 $wgOut->debug( $text );
 150         }
 151         if ( "" != $wgDebugLogFile && !$wgProfileOnly ) {
 152                 error_log( $text, 3, $wgDebugLogFile );
 153         }
 154 }
 155
 156 function logProfilingData()
 157 {
 158         global $wgRequestTime, $wgDebugLogFile;
 159         global $wgProfiling, $wgProfileStack, $wgProfileLimit, $wgUser;
 160         list( $usec, $sec ) = explode( " ", microtime() );
 161         $now = (float)$sec + (float)$usec;
 162
 163         list( $usec, $sec ) = explode( " ", $wgRequestTime );
 164         $start = (float)$sec + (float)$usec;
 165         $elapsed = $now - $start;
 166         if ( "" != $wgDebugLogFile ) {
 167                 $prof = wfGetProfilingOutput( $start, $elapsed );
 168                 if( !empty( $_SERVER['HTTP_X_FORWARDED_FOR'] ) )
 169                         $forward = " forwarded for " . $_SERVER['HTTP_X_FORWARDED_FOR'];
 170                 if( !empty( $_SERVER['HTTP_CLIENT_IP'] ) )
 171                         $forward .= " client IP " . $_SERVER['HTTP_CLIENT_IP'];
 172                 if( !empty( $_SERVER['HTTP_FROM'] ) )
 173                         $forward .= " from " . $_SERVER['HTTP_FROM'];
 174                 if( $forward )
 175                         $forward = "\t(proxied via {$_SERVER['REMOTE_ADDR']}{$forward})";
 176                 if($wgUser->getId() == 0)
 177                         $forward .= " anon";
 178                 $log = sprintf( "%s\t%04.3f\t%s\n",
 179                   gmdate( "YmdHis" ), $elapsed,
 180                   urldecode( $_SERVER['REQUEST_URI'] . $forward ) );
 181                 error_log( "TJOHEJ". $log . $prof, 3, $wgDebugLogFile );
 182         }
 183 }
 184
 185
 186 function wfReadOnly()
 187 {
 188         global $wgReadOnlyFile;
 189
 190         if ( "" == $wgReadOnlyFile ) { return false; }
 191         return is_file( $wgReadOnlyFile );
 192 }
 193
 194 $wgReplacementKeys = array( "$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8", "$9" );
 195
 196 # Get a message from anywhere
 197 function wfMsg( $key ) {
 198         $args = func_get_args();
 199         if ( count( $args ) ) {
 200                 array_shift( $args );
 201         }
 202         return wfMsgReal( $key, $args, true );
 203 }
 204
 205 # Get a message from the language file
 206 function wfMsgNoDB( $key ) {
 207         $args = func_get_args();
 208         if ( count( $args ) ) {
 209                 array_shift( $args );
 210         }
 211         return wfMsgReal( $key, $args, false );
 212 }
 213
 214 # Really get a message
 215 function wfMsgReal( $key, $args, $useDB ) {
 216         global $wgLang, $wgReplacementKeys, $wgMemc, $wgDBname;
 217         global $wgUseDatabaseMessages, $wgUseMemCached, $wgOut;
 218         global $wgAllMessagesEn, $wgLanguageCode;
 219
 220         $fname = "wfMsg";
 221         wfProfileIn( $fname );
 222
 223         static $messageCache = false;
 224         $memcKey = "$wgDBname:messages";
 225         $fname = "wfMsg";
 226         $message = false;
 227
 228         # newFromText is too slow!
 229         $title = ucfirst( $key );
 230         if ( $messageCache ) {
 231                 $message = $messageCache[$title];
 232         } elseif ( !$wgUseDatabaseMessages || !$useDB ) {
 233                 $message = $wgLang->getMessage( $key );
 234         }
 235
 236         if ( !$message && $wgUseMemCached ) {
 237                 # Try memcached
 238                 if ( !$messageCache ) {
 239                         $messageCache = $wgMemc->get( $memcKey );
 240                 }
 241
 242                 # If there's nothing in memcached, load all the messages from the database
 243                 # This should only happen on server reset -- ordinary changes should update
 244                 # memcached in editUpdates()
 245                 if ( !$messageCache ) {
 246                         # Other threads don't need to load the messages if another thread is doing it.
 247                         $wgMemc->set( $memcKey, "loading", time() + 60 );
 248                         $messageCache = wfLoadAllMessages();
 249                         # Save in memcached
 250                         $wgMemc->set( $memcKey, $messageCache, time() + 3600 );
 251
 252
 253                 }
 254                 if ( is_array( $messageCache ) && array_key_exists( $title, $messageCache ) ) {
 255                         $message = $messageCache[$title];
 256                 } elseif ( $messageCache == "loading" ) {
 257                         $messageCache = false;
 258                 }
 259         }
 260
 261         # If there was no MemCached, load each message from the DB individually
 262         if ( !$message ) {
 263                 if ( $useDB ) {
 264                         $sql = "SELECT cur_text FROM cur WHERE cur_namespace=" . NS_MEDIAWIKI .
 265                                 " AND cur_title='$title'";
 266                         $res = wfQuery( $sql, DB_READ, $fname );
 267
 268                         if ( wfNumRows( $res ) ) {
 269                                 $obj = wfFetchObject( $res );
 270                                 $message = $obj->cur_text;
 271                                 wfFreeResult( $res );
 272                         }
 273                 }
 274         }
 275
 276         # Try the array in $wgLang
 277         if ( !$message ) {
 278                 $message = $wgLang->getMessage( $key );
 279         }
 280
 281         # Try the English array
 282         if ( !$message && $wgLanguageCode != "en" ) {
 283                 $message = Language::getMessage( $key );
 284         }
 285
 286         # Replace arguments
 287         if( count( $args ) ) {
 288                 $message = str_replace( $wgReplacementKeys, $args, $message );
 289         }
 290         wfProfileOut( $fname );
 291         if ( !$message ) {
 292                 # Failed, message does not exist
 293                 return "&lt;$key&gt;";
 294         }
 295         return $message;
 296 }
 297
 298 function wfCleanFormFields( $fields )
 299 {
 300         global $HTTP_POST_VARS;
 301         global $wgInputEncoding, $wgOutputEncoding, $wgEditEncoding, $wgLang;
 302
 303         if ( get_magic_quotes_gpc() ) {
 304                 foreach ( $fields as $fname ) {
 305                         if ( isset( $HTTP_POST_VARS[$fname] ) ) {
 306                                 $HTTP_POST_VARS[$fname] = stripslashes(
 307                                   $HTTP_POST_VARS[$fname] );
 308                         }
 309                         global ${$fname};
 310                         if ( isset( ${$fname} ) ) {
 311                                 ${$fname} = stripslashes( ${$fname} );
 312                         }
 313                 }
 314         }
 315         $enc = $wgOutputEncoding;
 316         if( $wgEditEncoding != "") $enc = $wgEditEncoding;
 317         if ( $enc != $wgInputEncoding ) {
 318                 foreach ( $fields as $fname ) {
 319                         if ( isset( $HTTP_POST_VARS[$fname] ) ) {
 320                                 $HTTP_POST_VARS[$fname] = $wgLang->iconv(
 321                                   $wgOutputEncoding, $wgInputEncoding,
 322                                   $HTTP_POST_VARS[$fname] );
 323                         }
 324                         global ${$fname};
 325                         if ( isset( ${$fname} ) ) {
 326                                 ${$fname} = $wgLang->iconv(
 327                                   $enc, $wgInputEncoding, ${$fname} );
 328                         }
 329                 }
 330         }
 331 }
 332
 333 function wfMungeQuotes( $in )
 334 {
 335         $out = str_replace( "%", "%25", $in );
 336         $out = str_replace( "'", "%27", $out );
 337         $out = str_replace( "\"", "%22", $out );
 338         return $out;
 339 }
 340
 341 function wfDemungeQuotes( $in )
 342 {
 343         $out = str_replace( "%22", "\"", $in );
 344         $out = str_replace( "%27", "'", $out );
 345         $out = str_replace( "%25", "%", $out );
 346         return $out;
 347 }
 348
 349 function wfCleanQueryVar( $var )
 350 {
 351         global $wgLang;
 352         if ( get_magic_quotes_gpc() ) {
 353                 $var = stripslashes( $var );
 354         }
 355         return $wgLang->recodeInput( $var );
 356 }
 357
 358 function wfSpecialPage()
 359 {
 360         global $wgUser, $wgOut, $wgTitle, $wgLang;
 361
 362         /* FIXME: this list probably shouldn't be language-specific, per se */
 363         $validSP = $wgLang->getValidSpecialPages();
 364         $sysopSP = $wgLang->getSysopSpecialPages();
 365         $devSP = $wgLang->getDeveloperSpecialPages();
 366
 367         $wgOut->setArticleFlag( false );
 368         $wgOut->setRobotpolicy( "noindex,follow" );
 369
 370         $par = NULL;
 371         list($t, $par) = split( "/", $wgTitle->getDBkey(), 2 );
 372
 373         if ( array_key_exists( $t, $validSP ) ||
 374           ( $wgUser->isSysop() && array_key_exists( $t, $sysopSP ) ) ||
 375           ( $wgUser->isDeveloper() && array_key_exists( $t, $devSP ) ) ) {
 376                 if($par !== NULL)
 377                         $wgTitle = Title::makeTitle( Namespace::getSpecial(), $t );
 378
 379                 $wgOut->setPageTitle( wfMsg( strtolower( $wgTitle->getText() ) ) );
 380
 381                 $inc = "Special" . $t . ".php";
 382                 include_once( $inc );
 383                 $call = "wfSpecial" . $t;
 384                 $call( $par );
 385         } else if ( array_key_exists( $t, $sysopSP ) ) {
 386                 $wgOut->sysopRequired();
 387         } else if ( array_key_exists( $t, $devSP ) ) {
 388                 $wgOut->developerRequired();
 389         } else {
 390                 $wgOut->errorpage( "nosuchspecialpage", "nospecialpagetext" );
 391         }
 392 }
 393
 394 function wfSearch( $s )
 395 {
 396         $se = new SearchEngine( wfCleanQueryVar( $s ) );
 397         $se->showResults();
 398 }
 399
 400 function wfGo( $s )
 401 { # pick the nearest match
 402         $se = new SearchEngine( wfCleanQueryVar( $s ) );
 403         $se->goResult();
 404 }
 405
 406 /* private */ $wgAbruptExitCalled = false;
 407
 408 # Just like exit() but makes a note of it.
 409 function wfAbruptExit(){
 410         // Safety to avoid infinite recursion in case of (unlikely) bugs somewhere
 411         global $wgAbruptExitCalled;
 412         if ( $wgAbruptExitCalled ){
 413                 exit();
 414         }
 415         $wgAbruptExitCalled = true;
 416
 417         $bt = debug_backtrace();
 418         for($i = 0; $i < count($bt) ; $i++){
 419                 $file = $bt[$i]["file"];
 420                 $line = $bt[$i]["line"];
 421                 wfDebug("WARNING: Abrupt exit in $file at line $line\n");
 422         }
 423         exit();
 424 }
 425
 426 function wfNumberOfArticles()
 427 {
 428         global $wgNumberOfArticles;
 429
 430         wfLoadSiteStats();
 431         return $wgNumberOfArticles;
 432 }
 433
 434 /* private */ function wfLoadSiteStats()
 435 {
 436         global $wgNumberOfArticles, $wgTotalViews, $wgTotalEdits;
 437         if ( -1 != $wgNumberOfArticles ) return;
 438
 439         $sql = "SELECT ss_total_views, ss_total_edits, ss_good_articles " .
 440           "FROM site_stats WHERE ss_row_id=1";
 441         $res = wfQuery( $sql, DB_READ, "wfLoadSiteStats" );
 442
 443         if ( 0 == wfNumRows( $res ) ) { return; }
 444         else {
 445                 $s = wfFetchObject( $res );
 446                 $wgTotalViews = $s->ss_total_views;
 447                 $wgTotalEdits = $s->ss_total_edits;
 448                 $wgNumberOfArticles = $s->ss_good_articles;
 449         }
 450 }
 451
 452 function wfEscapeHTML( $in )
 453 {
 454         return str_replace(
 455                 array( "&", "\"", ">", "<" ),
 456                 array( "&amp;", "&quot;", "&gt;", "&lt;" ),
 457                 $in );
 458 }
 459
 460 function wfEscapeHTMLTagsOnly( $in ) {
 461         return str_replace(
 462                 array( "\"", ">", "<" ),
 463                 array( "&quot;", "&gt;", "&lt;" ),
 464                 $in );
 465 }
 466
 467 function wfUnescapeHTML( $in )
 468 {
 469         $in = str_replace( "&lt;", "<", $in );
 470         $in = str_replace( "&gt;", ">", $in );
 471         $in = str_replace( "&quot;", "\"", $in );
 472         $in = str_replace( "&amp;", "&", $in );
 473         return $in;
 474 }
 475
 476 function wfImageDir( $fname )
 477 {
 478         global $wgUploadDirectory;
 479
 480         $hash = md5( $fname );
 481         $oldumask = umask(0);
 482         $dest = $wgUploadDirectory . "/" . $hash{0};
 483         if ( ! is_dir( $dest ) ) { mkdir( $dest, 0777 ); }
 484         $dest .= "/" . substr( $hash, 0, 2 );
 485         if ( ! is_dir( $dest ) ) { mkdir( $dest, 0777 ); }
 486
 487         umask( $oldumask );
 488         return $dest;
 489 }
 490
 491 function wfImageArchiveDir( $fname )
 492 {
 493         global $wgUploadDirectory;
 494
 495         $hash = md5( $fname );
 496         $oldumask = umask(0);
 497         $archive = "{$wgUploadDirectory}/archive";
 498         if ( ! is_dir( $archive ) ) { mkdir( $archive, 0777 ); }
 499         $archive .= "/" . $hash{0};
 500         if ( ! is_dir( $archive ) ) { mkdir( $archive, 0777 ); }
 501         $archive .= "/" . substr( $hash, 0, 2 );
 502         if ( ! is_dir( $archive ) ) { mkdir( $archive, 0777 ); }
 503
 504         umask( $oldumask );
 505         return $archive;
 506 }
 507
 508 function wfRecordUpload( $name, $oldver, $size, $desc )
 509 {
 510         global $wgUser, $wgLang, $wgTitle, $wgOut, $wgDeferredUpdateList;
 511         global $wgUseCopyrightUpload , $wpUploadCopyStatus , $wpUploadSource ;
 512
 513         $fname = "wfRecordUpload";
 514
 515         $sql = "SELECT img_name,img_size,img_timestamp,img_description,img_user," .
 516           "img_user_text FROM image WHERE img_name='" . wfStrencode( $name ) . "'";
 517         $res = wfQuery( $sql, DB_READ, $fname );
 518
 519         $now = wfTimestampNow();
 520         $won = wfInvertTimestamp( $now );
 521         $size = IntVal( $size );
 522
 523         if ( $wgUseCopyrightUpload )
 524           {
 525             $textdesc = "== " . wfMsg ( "filedesc" ) . " ==\n" . $desc . "\n" .
 526               "== " . wfMsg ( "filestatus" ) . " ==\n" . $wpUploadCopyStatus . "\n" .
 527               "== " . wfMsg ( "filesource" ) . " ==\n" . $wpUploadSource ;
 528           }
 529         else $textdesc = $desc ;
 530
 531         $now = wfTimestampNow();
 532         $won = wfInvertTimestamp( $now );
 533
 534         if ( 0 == wfNumRows( $res ) ) {
 535                 $sql = "INSERT INTO image (img_name,img_size,img_timestamp," .
 536                   "img_description,img_user,img_user_text) VALUES ('" .
 537                   wfStrencode( $name ) . "',$size,'{$now}','" .
 538                   wfStrencode( $desc ) . "', '" . $wgUser->getID() .
 539                   "', '" . wfStrencode( $wgUser->getName() ) . "')";
 540                 wfQuery( $sql, DB_WRITE, $fname );
 541
 542                 $sql = "SELECT cur_id,cur_text FROM cur WHERE cur_namespace=" .
 543                   Namespace::getImage() . " AND cur_title='" .
 544                   wfStrencode( $name ) . "'";
 545                 $res = wfQuery( $sql, DB_READ, $fname );
 546                 if ( 0 == wfNumRows( $res ) ) {
 547             $common =
 548                           Namespace::getImage() . ",'" .
 549                           wfStrencode( $name ) . "','" .
 550                           wfStrencode( $desc ) . "','" . $wgUser->getID() . "','" .
 551                           wfStrencode( $wgUser->getName() ) . "','" . $now .
 552                           "',1";
 553                         $sql = "INSERT INTO cur (cur_namespace,cur_title," .
 554                           "cur_comment,cur_user,cur_user_text,cur_timestamp,cur_is_new," .
 555                           "cur_text,inverse_timestamp,cur_touched) VALUES (" .
 556                           $common .
 557                           ",'" . wfStrencode( $textdesc ) . "','{$won}','{$now}')";
 558                         wfQuery( $sql, DB_WRITE, $fname );
 559                         $id = wfInsertId() or 0; # We should throw an error instead
 560                         $sql = "INSERT INTO recentchanges (rc_namespace,rc_title,
 561                                 rc_comment,rc_user,rc_user_text,rc_timestamp,rc_new,
 562                                 rc_cur_id,rc_cur_time) VALUES ({$common},{$id},'{$now}')";
 563             wfQuery( $sql, DB_WRITE, $fname );
 564                         $u = new SearchUpdate( $id, $name, $desc );
 565                         $u->doUpdate();
 566                 }
 567         } else {
 568                 $s = wfFetchObject( $res );
 569
 570                 $sql = "INSERT INTO oldimage (oi_name,oi_archive_name,oi_size," .
 571                   "oi_timestamp,oi_description,oi_user,oi_user_text) VALUES ('" .
 572                   wfStrencode( $s->img_name ) . "','" .
 573                   wfStrencode( $oldver ) .
 574                   "',{$s->img_size},'{$s->img_timestamp}','" .
 575                   wfStrencode( $s->img_description ) . "','" .
 576                   wfStrencode( $s->img_user ) . "','" .
 577                   wfStrencode( $s->img_user_text) . "')";
 578                 wfQuery( $sql, DB_WRITE, $fname );
 579
 580                 $sql = "UPDATE image SET img_size={$size}," .
 581                   "img_timestamp='" . wfTimestampNow() . "',img_user='" .
 582                   $wgUser->getID() . "',img_user_text='" .
 583                   wfStrencode( $wgUser->getName() ) . "', img_description='" .
 584                   wfStrencode( $desc ) . "' WHERE img_name='" .
 585                   wfStrencode( $name ) . "'";
 586                 wfQuery( $sql, DB_WRITE, $fname );
 587
 588                 $sql = "UPDATE cur SET cur_touched='{$now}' WHERE cur_namespace=" .
 589                   Namespace::getImage() . " AND cur_title='" .
 590                   wfStrencode( $name ) . "'";
 591                 wfQuery( $sql, DB_WRITE, $fname );
 592         }
 593
 594         $log = new LogPage( wfMsg( "uploadlogpage" ), wfMsg( "uploadlogpagetext" ) );
 595         $da = wfMsg( "uploadedimage", "[[:" . $wgLang->getNsText(
 596           Namespace::getImage() ) . ":{$name}|{$name}]]" );
 597         $ta = wfMsg( "uploadedimage", $name );
 598         $log->addEntry( $da, $desc, $ta );
 599 }
 600
 601
 602 /* Some generic result counters, pulled out of SearchEngine */
 603
 604 function wfShowingResults( $offset, $limit )
 605 {
 606         return wfMsg( "showingresults", $limit, $offset+1 );
 607 }
 608
 609 function wfShowingResultsNum( $offset, $limit, $num )
 610 {
 611         return wfMsg( "showingresultsnum", $limit, $offset+1, $num );
 612 }
 613
 614 function wfViewPrevNext( $offset, $limit, $link, $query = "" )
 615 {
 616         global $wgUser;
 617         $prev = wfMsg( "prevn", $limit );
 618         $next = wfMsg( "nextn", $limit );
 619
 620         $sk = $wgUser->getSkin();
 621         if ( 0 != $offset ) {
 622                 $po = $offset - $limit;
 623                 if ( $po < 0 ) { $po = 0; }
 624                 $q = "limit={$limit}&offset={$po}";
 625                 if ( "" != $query ) { $q .= "&{$query}"; }
 626                 $plink = "<a href=\"" . wfLocalUrlE( $link, $q ) . "\">{$prev}</a>";
 627         } else { $plink = $prev; }
 628
 629         $no = $offset + $limit;
 630         $q = "limit={$limit}&offset={$no}";
 631         if ( "" != $query ) { $q .= "&{$query}"; }
 632
 633         $nlink = "<a href=\"" . wfLocalUrlE( $link, $q ) . "\">{$next}</a>";
 634         $nums = wfNumLink( $offset, 20, $link , $query ) . " | " .
 635           wfNumLink( $offset, 50, $link, $query ) . " | " .
 636           wfNumLink( $offset, 100, $link, $query ) . " | " .
 637           wfNumLink( $offset, 250, $link, $query ) . " | " .
 638           wfNumLink( $offset, 500, $link, $query );
 639
 640         return wfMsg( "viewprevnext", $plink, $nlink, $nums );
 641 }
 642
 643 function wfNumLink( $offset, $limit, $link, $query = "" )
 644 {
 645         global $wgUser;
 646         if ( "" == $query ) { $q = ""; }
 647         else { $q = "{$query}&"; }
 648         $q .= "limit={$limit}&offset={$offset}";
 649
 650         $s = "<a href=\"" . wfLocalUrlE( $link, $q ) . "\">{$limit}</a>";
 651         return $s;
 652 }
 653
 654 function wfClientAcceptsGzip() {
 655         global $wgUseGzip;
 656         if( $wgUseGzip ) {
 657                 # FIXME: we may want to blacklist some broken browsers
 658                 if( preg_match(
 659                         '/\bgzip(?:;(q)=([0-9]+(?:\.[0-9]+)))?\b/',
 660                         $_SERVER["HTTP_ACCEPT_ENCODING"],
 661                         $m ) ) {
 662                         if( ( $m[1] == "q" ) && ( $m[2] == 0 ) ) return false;
 663                         wfDebug( " accepts gzip\n" );
 664                         return true;
 665                 }
 666         }
 667         return false;
 668 }
 669
 670 # Yay, more global functions!
 671 function wfCheckLimits( $deflimit = 50, $optionname = "rclimit" ) {
 672         global $wgUser;
 673
 674         $limit = (int)$_REQUEST['limit'];
 675         if( $limit < 0 ) $limit = 0;
 676         if( ( $limit == 0 ) && ( $optionname != "" ) ) {
 677                 $limit = (int)$wgUser->getOption( $optionname );
 678         }
 679         if( $limit <= 0 ) $limit = $deflimit;
 680         if( $limit > 5000 ) $limit = 5000; # We have *some* limits...
 681
 682         $offset = (int)$_REQUEST['offset'];
 683         $offset = (int)$offset;
 684         if( $offset < 0 ) $offset = 0;
 685         if( $offset > 65000 ) $offset = 65000; # do we need a max? what?
 686
 687         return array( $limit, $offset );
 688 }
 689
 690 # Escapes the given text so that it may be output using addWikiText()
 691 # without any linking, formatting, etc. making its way through. This
 692 # is achieved by substituting certain characters with HTML entities.
 693 # As required by the callers, <nowiki> is not used. It currently does
 694 # not filter out characters which have special meaning only at the
 695 # start of a line, such as "*".
 696 function wfEscapeWikiText( $text )
 697 {
 698         $text = str_replace(
 699                 array( '[',     "'",     'ISBN '    , '://'     , "\n=" ),
 700                 array( '&#91;', '&#39;', 'ISBN&#32;', '&#58;//' , "\n&#61;" ),
 701                 htmlspecialchars($text) );
 702         return $text;
 703 }
 704
 705 # Loads the entire MediaWiki namespace, returns the array
 706 function wfLoadAllMessages()
 707 {
 708         $sql = "SELECT cur_title,cur_text FROM cur WHERE cur_namespace=" . NS_MEDIAWIKI;
 709         $res = wfQuery( $sql, DB_READ, $fname );
 710
 711         $messages = array();
 712         for ( $row = wfFetchObject( $res ); $row; $row = wfFetchObject( $res ) ) {
 713                 $messages[$row->cur_title] = $row->cur_text;
 714         }
 715         wfFreeResult( $res );
 716         return $messages;
 717 }
 718
 719 function wfQuotedPrintable( $string, $charset = "" )
 720 {
 721         # Probably incomplete; see RFC 2045
 722         if( empty( $charset ) ) {
 723                 global $wgInputEncoding;
 724                 $charset = $wgInputEncoding;
 725         }
 726         $charset = strtoupper( $charset );
 727         $charset = str_replace( "ISO-8859", "ISO8859", $charset ); // ?
 728
 729         $illegal = '\x00-\x08\x0b\x0c\x0e-\x1f\x7f-\xff=';
 730         $replace = $illegal . '\t ?_';
 731         if( !preg_match( "/[$illegal]/", $string ) ) return $string;
 732         $out = "=?$charset?Q?";
 733         $out .= preg_replace( "/([$replace])/e", 'sprintf("=%02X",ord("$1"))', $string );
 734         $out .= "?=";
 735         return $out;
 736 }
 737
 738
 739 ?>