includes/specials/Recentchanges.php

   1 <?php
   2 /**
   3  * @file
   4  * @ingroup SpecialPage
   5  */
   6
   7 /**
   8  *
   9  */
  10 require_once( dirname(__FILE__) . '/ChangesList.php' );
  11
  12 /**
  13  * Constructor
  14  */
  15 function wfSpecialRecentchanges( $par, $specialPage ) {
  16         global $wgUser, $wgOut, $wgRequest, $wgUseRCPatrol;
  17         global $wgRCShowWatchingUsers, $wgShowUpdatedMarker;
  18         global $wgAllowCategorizedRecentChanges ;
  19
  20         # Get query parameters
  21         $feedFormat = $wgRequest->getVal( 'feed' );
  22
  23         /* Checkbox values can't be true by default, because
  24          * we cannot differentiate between unset and not set at all
  25          */
  26         $defaults = array(
  27         /* int  */ 'days' => $wgUser->getDefaultOption('rcdays'),
  28         /* int  */ 'limit' => $wgUser->getDefaultOption('rclimit'),
  29         /* bool */ 'hideminor' => false,
  30         /* bool */ 'hidebots' => true,
  31         /* bool */ 'hideanons' => false,
  32         /* bool */ 'hideliu' => false,
  33         /* bool */ 'hidepatrolled' => false,
  34         /* bool */ 'hidemyself' => false,
  35         /* text */ 'from' => '',
  36         /* text */ 'namespace' => null,
  37         /* bool */ 'invert' => false,
  38         /* bool */ 'categories_any' => false,
  39         );
  40
  41         extract($defaults);
  42
  43
  44         $days = $wgUser->getOption( 'rcdays', $defaults['days']);
  45         $days = $wgRequest->getInt( 'days', $days );
  46
  47         $limit = $wgUser->getOption( 'rclimit', $defaults['limit'] );
  48
  49         #       list( $limit, $offset ) = wfCheckLimits( 100, 'rclimit' );
  50         $limit = $wgRequest->getInt( 'limit', $limit );
  51
  52         /* order of selection: url > preferences > default */
  53         $hideminor = $wgRequest->getBool( 'hideminor', $wgUser->getOption( 'hideminor') ? true : $defaults['hideminor'] );
  54
  55         # As a feed, use limited settings only
  56         if( $feedFormat ) {
  57                 global $wgFeedLimit;
  58                 $limit = min( $wgFeedLimit, $limit );
  59         } else {
  60
  61                 $namespace = $wgRequest->getIntOrNull( 'namespace' );
  62                 $invert = $wgRequest->getBool( 'invert', $defaults['invert'] );
  63                 $hidebots = $wgRequest->getBool( 'hidebots', $defaults['hidebots'] );
  64                 $hideanons = $wgRequest->getBool( 'hideanons', $defaults['hideanons'] );
  65                 $hideliu = $wgRequest->getBool( 'hideliu', $defaults['hideliu'] );
  66                 $hidepatrolled = $wgRequest->getBool( 'hidepatrolled', $defaults['hidepatrolled'] );
  67                 $hidemyself = $wgRequest->getBool ( 'hidemyself', $defaults['hidemyself'] );
  68                 $from = $wgRequest->getVal( 'from', $defaults['from'] );
  69
  70                 # Get query parameters from path
  71                 if( $par ) {
  72                         $bits = preg_split( '/\s*,\s*/', trim( $par ) );
  73                         foreach ( $bits as $bit ) {
  74                                 if ( 'hidebots' == $bit ) $hidebots = 1;
  75                                 if ( 'bots' == $bit ) $hidebots = 0;
  76                                 if ( 'hideminor' == $bit ) $hideminor = 1;
  77                                 if ( 'minor' == $bit ) $hideminor = 0;
  78                                 if ( 'hideliu' == $bit ) $hideliu = 1;
  79                                 if ( 'hidepatrolled' == $bit ) $hidepatrolled = 1;
  80                                 if ( 'hideanons' == $bit ) $hideanons = 1;
  81                                 if ( 'hidemyself' == $bit ) $hidemyself = 1;
  82
  83                                 if ( is_numeric( $bit ) ) {
  84                                         $limit = $bit;
  85                                 }
  86
  87                                 $m = array();
  88                                 if ( preg_match( '/^limit=(\d+)$/', $bit, $m ) ) {
  89                                         $limit = $m[1];
  90                                 }
  91
  92                                 if ( preg_match( '/^days=(\d+)$/', $bit, $m ) ) {
  93                                         $days = $m[1];
  94                                 }
  95                         }
  96                 }
  97         }
  98
  99         if ( $limit < 0 || $limit > 5000 ) $limit = $defaults['limit'];
 100
 101         # Database connection and caching
 102         $dbr = wfGetDB( DB_SLAVE );
 103
 104         $cutoff_unixtime = time() - ( $days * 86400 );
 105         $cutoff_unixtime = $cutoff_unixtime - ($cutoff_unixtime % 86400);
 106         $cutoff = $dbr->timestamp( $cutoff_unixtime );
 107         if(preg_match('/^[0-9]{14}$/', $from) and $from > wfTimestamp(TS_MW,$cutoff)) {
 108                 $cutoff = $dbr->timestamp($from);
 109         } else {
 110                 $from = $defaults['from'];
 111         }
 112
 113         # 10 seconds server-side caching max
 114         $wgOut->setSquidMaxage( 10 );
 115
 116         # Get last modified date, for client caching
 117         # Don't use this if we are using the patrol feature, patrol changes don't update the timestamp
 118         $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', false, __FUNCTION__ );
 119         if ( $feedFormat || !$wgUseRCPatrol ) {
 120                 if( $lastmod && $wgOut->checkLastModified( $lastmod ) ){
 121                         # Client cache fresh and headers sent, nothing more to do.
 122                         return;
 123                 }
 124         }
 125
 126         # It makes no sense to hide both anons and logged-in users
 127         # Where this occurs, force anons to be shown
 128         $forcebot = false;
 129         if( $hideanons && $hideliu ){
 130                 # Check if the user wants to show bots only
 131                 if( $hidebots ){
 132                         $hideanons = 0;
 133                 } else {
 134                         $forcebot = true;
 135                         $hidebots = 0;
 136                 }
 137         }
 138
 139         # Form WHERE fragments for all the options
 140         $hidem  = $hideminor ? 'AND rc_minor = 0' : '';
 141         $hidem .= $hidebots ? ' AND rc_bot = 0' : '';
 142         $hidem .= $hideliu && !$forcebot ? ' AND rc_user = 0' : '';
 143         $hidem .= ($wgUser->useRCPatrol() && $hidepatrolled ) ? ' AND rc_patrolled = 0' : '';
 144         $hidem .= $hideanons && !$forcebot ? ' AND rc_user != 0' : '';
 145         $hidem .= $forcebot ? ' AND rc_bot = 1' : '';
 146
 147         if( $hidemyself ) {
 148                 if( $wgUser->getId() ) {
 149                         $hidem .= ' AND rc_user != ' . $wgUser->getId();
 150                 } else {
 151                         $hidem .= ' AND rc_user_text != ' . $dbr->addQuotes( $wgUser->getName() );
 152                 }
 153         }
 154
 155         // JOIN on watchlist for users
 156         $uid = $wgUser->getId();
 157         if( $uid ) {
 158                 $tables = array( 'recentchanges', 'watchlist' );
 159                 $join_conds = array( 'watchlist' => array('LEFT JOIN',"wl_user={$uid} AND wl_title=rc_title AND wl_namespace=rc_namespace") );
 160         } else {
 161                 $tables = array( 'recentchanges' );
 162                 $join_conds = array();
 163         }
 164
 165         # Namespace filtering
 166         $hidem .= is_null($namespace) ?  '' : ' AND rc_namespace' . ($invert ? '!=' : '=') . $namespace;
 167
 168         // Is there either one namespace selected or excluded?
 169         // Also, if this is "all" or main namespace, just use timestamp index.
 170         if( is_null($namespace) || $invert || $namespace == NS_MAIN ) {
 171                 $res = $dbr->select( $tables, '*',
 172                         array( "rc_timestamp >= '{$cutoff}' {$hidem}" ),
 173                         __METHOD__,
 174                         array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit,
 175                                 'USE INDEX' => array('recentchanges' => 'rc_timestamp') ),
 176                         $join_conds );
 177         // We have a new_namespace_time index! UNION over new=(0,1) and sort result set!
 178         } else {
 179                 // New pages
 180                 $sqlNew = $dbr->selectSQLText( $tables, '*',
 181                         array( 'rc_new' => 1,
 182                                 "rc_timestamp >= '{$cutoff}' {$hidem}" ),
 183                         __METHOD__,
 184                         array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit,
 185                                 'USE INDEX' =>  array('recentchanges' => 'new_name_timestamp') ),
 186                         $join_conds );
 187                 // Old pages
 188                 $sqlOld = $dbr->selectSQLText( $tables, '*',
 189                         array( 'rc_new' => 0,
 190                                 "rc_timestamp >= '{$cutoff}' {$hidem}" ),
 191                         __METHOD__,
 192                         array( 'ORDER BY' => 'rc_timestamp DESC', 'LIMIT' => $limit,
 193                                 'USE INDEX' =>  array('recentchanges' => 'new_name_timestamp') ),
 194                         $join_conds );
 195                 # Join the two fast queries, and sort the result set
 196                 $sql = "($sqlNew) UNION ($sqlOld) ORDER BY rc_timestamp DESC LIMIT $limit";
 197                 $res = $dbr->query( $sql, __METHOD__ );
 198         }
 199
 200         // Fetch results, prepare a batch link existence check query
 201         $rows = array();
 202         $batch = new LinkBatch;
 203         while( $row = $dbr->fetchObject( $res ) ){
 204                 $rows[] = $row;
 205                 if ( !$feedFormat ) {
 206                         // User page and talk links
 207                         $batch->add( NS_USER, $row->rc_user_text  );
 208                         $batch->add( NS_USER_TALK, $row->rc_user_text  );
 209                 }
 210
 211         }
 212         $dbr->freeResult( $res );
 213
 214         if( $feedFormat ) {
 215                 rcOutputFeed( $rows, $feedFormat, $limit, $hideminor, $lastmod );
 216         } else {
 217
 218                 # Web output...
 219
 220                 // Run existence checks
 221                 $batch->execute();
 222                 $any = $wgRequest->getBool( 'categories_any', $defaults['categories_any']);
 223
 224                 // Output header
 225                 if ( !$specialPage->including() ) {
 226                         $wgOut->addWikiText( wfMsgForContentNoTrans( "recentchangestext" ) );
 227
 228                         // Dump everything here
 229                         $nondefaults = array();
 230
 231                         wfAppendToArrayIfNotDefault( 'days', $days, $defaults, $nondefaults);
 232                         wfAppendToArrayIfNotDefault( 'limit', $limit , $defaults, $nondefaults);
 233                         wfAppendToArrayIfNotDefault( 'hideminor', $hideminor, $defaults, $nondefaults);
 234                         wfAppendToArrayIfNotDefault( 'hidebots', $hidebots, $defaults, $nondefaults);
 235                         wfAppendToArrayIfNotDefault( 'hideanons', $hideanons, $defaults, $nondefaults );
 236                         wfAppendToArrayIfNotDefault( 'hideliu', $hideliu, $defaults, $nondefaults);
 237                         wfAppendToArrayIfNotDefault( 'hidepatrolled', $hidepatrolled, $defaults, $nondefaults);
 238                         wfAppendToArrayIfNotDefault( 'hidemyself', $hidemyself, $defaults, $nondefaults);
 239                         wfAppendToArrayIfNotDefault( 'from', $from, $defaults, $nondefaults);
 240                         wfAppendToArrayIfNotDefault( 'namespace', $namespace, $defaults, $nondefaults);
 241                         wfAppendToArrayIfNotDefault( 'invert', $invert, $defaults, $nondefaults);
 242                         wfAppendToArrayIfNotDefault( 'categories_any', $any, $defaults, $nondefaults);
 243
 244                         // Add end of the texts
 245                         $wgOut->addHTML( '<div class="rcoptions">' . rcOptionsPanel( $defaults, $nondefaults ) . "\n" );
 246                         $wgOut->addHTML( rcNamespaceForm( $namespace, $invert, $nondefaults, $any ) . '</div>'."\n");
 247                 }
 248
 249                 // And now for the content
 250                 $wgOut->setSyndicated( true );
 251
 252                 $list = ChangesList::newFromUser( $wgUser );
 253
 254                 if ( $wgAllowCategorizedRecentChanges ) {
 255                         $categories = trim ( $wgRequest->getVal ( 'categories' , "" ) ) ;
 256                         $categories = str_replace ( "|" , "\n" , $categories ) ;
 257                         $categories = explode ( "\n" , $categories ) ;
 258                         rcFilterByCategories ( $rows , $categories , $any ) ;
 259                 }
 260
 261                 $s = $list->beginRecentChangesList();
 262                 $counter = 1;
 263
 264                 $showWatcherCount = $wgRCShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' );
 265                 $watcherCache = array();
 266
 267                 foreach( $rows as $obj ){
 268                         if( $limit == 0) {
 269                                 break;
 270                         }
 271
 272                         if ( ! ( $hideminor     && $obj->rc_minor     ) &&
 273                              ! ( $hidepatrolled && $obj->rc_patrolled ) ) {
 274                                 $rc = RecentChange::newFromRow( $obj );
 275                                 $rc->counter = $counter++;
 276
 277                                 if ($wgShowUpdatedMarker
 278                                         && !empty( $obj->wl_notificationtimestamp )
 279                                         && ($obj->rc_timestamp >= $obj->wl_notificationtimestamp)) {
 280                                                 $rc->notificationtimestamp = true;
 281                                 } else {
 282                                         $rc->notificationtimestamp = false;
 283                                 }
 284
 285                                 $rc->numberofWatchingusers = 0; // Default
 286                                 if ($showWatcherCount && $obj->rc_namespace >= 0) {
 287                                         if (!isset($watcherCache[$obj->rc_namespace][$obj->rc_title])) {
 288                                                 $watcherCache[$obj->rc_namespace][$obj->rc_title] =
 289                                                         $dbr->selectField( 'watchlist',
 290                                                                 'COUNT(*)',
 291                                                                 array(
 292                                                                         'wl_namespace' => $obj->rc_namespace,
 293                                                                         'wl_title' => $obj->rc_title,
 294                                                                 ),
 295                                                                 __METHOD__ . '-watchers' );
 296                                         }
 297                                         $rc->numberofWatchingusers = $watcherCache[$obj->rc_namespace][$obj->rc_title];
 298                                 }
 299                                 $s .= $list->recentChangesLine( $rc, !empty( $obj->wl_user ) );
 300                                 --$limit;
 301                         }
 302                 }
 303                 $s .= $list->endRecentChangesList();
 304                 $wgOut->addHTML( $s );
 305         }
 306 }
 307
 308 function rcFilterByCategories ( &$rows , $categories , $any ) {
 309         if( empty( $categories ) ) {
 310                 return;
 311         }
 312
 313         # Filter categories
 314         $cats = array () ;
 315         foreach ( $categories AS $cat ) {
 316                 $cat = trim ( $cat ) ;
 317                 if ( $cat == "" ) continue ;
 318                 $cats[] = $cat ;
 319         }
 320
 321         # Filter articles
 322         $articles = array () ;
 323         $a2r = array () ;
 324         foreach ( $rows AS $k => $r ) {
 325                 $nt = Title::makeTitle( $r->rc_namespace, $r->rc_title );
 326                 $id = $nt->getArticleID() ;
 327                 if ( $id == 0 ) continue ; # Page might have been deleted...
 328                 if ( !in_array ( $id , $articles ) ) {
 329                         $articles[] = $id ;
 330                 }
 331                 if ( !isset ( $a2r[$id] ) ) {
 332                         $a2r[$id] = array() ;
 333                 }
 334                 $a2r[$id][] = $k ;
 335         }
 336
 337         # Shortcut?
 338         if ( count ( $articles ) == 0 OR count ( $cats ) == 0 )
 339                 return ;
 340
 341         # Look up
 342         $c = new Categoryfinder ;
 343         $c->seed ( $articles , $cats , $any ? "OR" : "AND" ) ;
 344         $match = $c->run () ;
 345
 346         # Filter
 347         $newrows = array () ;
 348         foreach ( $match AS $id ) {
 349                 foreach ( $a2r[$id] AS $rev ) {
 350                         $k = $rev ;
 351                         $newrows[$k] = $rows[$k] ;
 352                 }
 353         }
 354         $rows = $newrows ;
 355 }
 356
 357 function rcOutputFeed( $rows, $feedFormat, $limit, $hideminor, $lastmod ) {
 358         global $messageMemc, $wgFeedCacheTimeout;
 359         global $wgFeedClasses, $wgTitle, $wgSitename, $wgContLanguageCode;
 360         global $wgFeed;
 361
 362         if ( !$wgFeed ) {
 363                 global $wgOut;
 364                 $wgOut->addWikiMsg( 'feed-unavailable' );
 365                 return;
 366         }
 367
 368         if( !isset( $wgFeedClasses[$feedFormat] ) ) {
 369                 wfHttpError( 500, "Internal Server Error", "Unsupported feed type." );
 370                 return false;
 371         }
 372
 373         $timekey = wfMemcKey( 'rcfeed', $feedFormat, 'timestamp' );
 374         $key = wfMemcKey( 'rcfeed', $feedFormat, 'limit', $limit, 'minor', $hideminor );
 375
 376         $feedTitle = $wgSitename . ' - ' . wfMsgForContent( 'recentchanges' ) .
 377                 ' [' . $wgContLanguageCode . ']';
 378         $feed = new $wgFeedClasses[$feedFormat](
 379                 $feedTitle,
 380                 htmlspecialchars( wfMsgForContent( 'recentchanges-feed-description' ) ),
 381                 $wgTitle->getFullUrl() );
 382
 383         //purge cache if requested
 384         global $wgRequest, $wgUser;
 385         $purge = $wgRequest->getVal( 'action' ) == 'purge';
 386         if ( $purge && $wgUser->isAllowed('purge') ) {
 387                 $messageMemc->delete( $timekey );
 388                 $messageMemc->delete( $key );
 389         }
 390
 391         /**
 392          * Bumping around loading up diffs can be pretty slow, so where
 393          * possible we want to cache the feed output so the next visitor
 394          * gets it quick too.
 395          */
 396         $cachedFeed = false;
 397         if( ( $wgFeedCacheTimeout > 0 ) && ( $feedLastmod = $messageMemc->get( $timekey ) ) ) {
 398                 /**
 399                  * If the cached feed was rendered very recently, we may
 400                  * go ahead and use it even if there have been edits made
 401                  * since it was rendered. This keeps a swarm of requests
 402                  * from being too bad on a super-frequently edited wiki.
 403                  */
 404                 if( time() - wfTimestamp( TS_UNIX, $feedLastmod )
 405                                 < $wgFeedCacheTimeout
 406                         || wfTimestamp( TS_UNIX, $feedLastmod )
 407                                 > wfTimestamp( TS_UNIX, $lastmod ) ) {
 408                         wfDebug( "RC: loading feed from cache ($key; $feedLastmod; $lastmod)...\n" );
 409                         $cachedFeed = $messageMemc->get( $key );
 410                 } else {
 411                         wfDebug( "RC: cached feed timestamp check failed ($feedLastmod; $lastmod)\n" );
 412                 }
 413         }
 414         if( is_string( $cachedFeed ) ) {
 415                 wfDebug( "RC: Outputting cached feed\n" );
 416                 $feed->httpHeaders();
 417                 echo $cachedFeed;
 418         } else {
 419                 wfDebug( "RC: rendering new feed and caching it\n" );
 420                 ob_start();
 421                 rcDoOutputFeed( $rows, $feed );
 422                 $cachedFeed = ob_get_contents();
 423                 ob_end_flush();
 424
 425                 $expire = 3600 * 24; # One day
 426                 $messageMemc->set( $key, $cachedFeed );
 427                 $messageMemc->set( $timekey, wfTimestamp( TS_MW ), $expire );
 428         }
 429         return true;
 430 }
 431
 432 /**
 433  * @todo document
 434  * @param $rows Database resource with recentchanges rows
 435  */
 436 function rcDoOutputFeed( $rows, &$feed ) {
 437         wfProfileIn( __METHOD__ );
 438
 439         $feed->outHeader();
 440
 441         # Merge adjacent edits by one user
 442         $sorted = array();
 443         $n = 0;
 444         foreach( $rows as $obj ) {
 445                 if( $n > 0 &&
 446                         $obj->rc_namespace >= 0 &&
 447                         $obj->rc_cur_id == $sorted[$n-1]->rc_cur_id &&
 448                         $obj->rc_user_text == $sorted[$n-1]->rc_user_text ) {
 449                         $sorted[$n-1]->rc_last_oldid = $obj->rc_last_oldid;
 450                 } else {
 451                         $sorted[$n] = $obj;
 452                         $n++;
 453                 }
 454         }
 455
 456         foreach( $sorted as $obj ) {
 457                 $title = Title::makeTitle( $obj->rc_namespace, $obj->rc_title );
 458                 $talkpage = $title->getTalkPage();
 459                 $item = new FeedItem(
 460                         $title->getPrefixedText(),
 461                         rcFormatDiff( $obj ),
 462                         $title->getFullURL( 'diff=' . $obj->rc_this_oldid . '&oldid=prev' ),
 463                         $obj->rc_timestamp,
 464                         ($obj->rc_deleted & Revision::DELETED_USER) ? wfMsgHtml('rev-deleted-user') : $obj->rc_user_text,
 465                         $talkpage->getFullURL()
 466                         );
 467                 $feed->outItem( $item );
 468         }
 469         $feed->outFooter();
 470         wfProfileOut( __METHOD__ );
 471 }
 472
 473 /**
 474  *
 475  */
 476 function rcCountLink( $lim, $d, $page='Recentchanges', $more='', $active = false ) {
 477         global $wgUser, $wgLang, $wgContLang;
 478         $sk = $wgUser->getSkin();
 479         $s = $sk->makeKnownLink( $wgContLang->specialPage( $page ),
 480           ($lim ? $wgLang->formatNum( "{$lim}" ) : wfMsg( 'recentchangesall' ) ), "{$more}" .
 481           ($d ? "days={$d}&" : '') . 'limit='.$lim, '', '',
 482           $active ? 'style="font-weight: bold;"' : '' );
 483         return $s;
 484 }
 485
 486 /**
 487  *
 488  */
 489 function rcDaysLink( $lim, $d, $page='Recentchanges', $more='', $active = false ) {
 490         global $wgUser, $wgLang, $wgContLang;
 491         $sk = $wgUser->getSkin();
 492         $s = $sk->makeKnownLink( $wgContLang->specialPage( $page ),
 493           ($d ? $wgLang->formatNum( "{$d}" ) : wfMsg( 'recentchangesall' ) ), $more.'days='.$d .
 494           ($lim ? '&limit='.$lim : ''), '', '',
 495           $active ? 'style="font-weight: bold;"' : '' );
 496         return $s;
 497 }
 498
 499 /**
 500  * Used by Recentchangeslinked
 501  */
 502 function rcDayLimitLinks( $days, $limit, $page='Recentchanges', $more='', $doall = false, $minorLink = '',
 503         $botLink = '', $liuLink = '', $patrLink = '', $myselfLink = '' ) {
 504         global $wgRCLinkLimits, $wgRCLinkDays;
 505         if ($more != '') $more .= '&';
 506
 507         # Sort data for display and make sure it's unique after we've added user data.
 508         # FIXME: why does this piss around with globals like this? Why is $limit added on globally?
 509         $wgRCLinkLimits[] = $limit;
 510         $wgRCLinkDays[] = $days;
 511         sort($wgRCLinkLimits);
 512         sort($wgRCLinkDays);
 513         $wgRCLinkLimits = array_unique($wgRCLinkLimits);
 514         $wgRCLinkDays = array_unique($wgRCLinkDays);
 515
 516         $cl = array();
 517         foreach( $wgRCLinkLimits as $countLink ) {
 518                 $cl[] = rcCountLink( $countLink, $days, $page, $more, $countLink == $limit );
 519         }
 520         if( $doall ) $cl[] = rcCountLink( 0, $days, $page, $more );
 521         $cl = implode( ' | ', $cl);
 522
 523         $dl = array();
 524         foreach( $wgRCLinkDays as $daysLink ) {
 525                 $dl[] = rcDaysLink( $limit, $daysLink, $page, $more, $daysLink == $days );
 526         }
 527         if( $doall ) $dl[] = rcDaysLink( $limit, 0, $page, $more );
 528         $dl = implode( ' | ', $dl);
 529
 530         $linkParts = array( 'minorLink' => 'minor', 'botLink' => 'bots', 'liuLink' => 'liu', 'patrLink' => 'patr', 'myselfLink' => 'mine' );
 531         foreach( $linkParts as $linkVar => $linkMsg ) {
 532                 if( $$linkVar != '' )
 533                         $links[] = wfMsgHtml( 'rcshowhide' . $linkMsg, $$linkVar );
 534         }
 535
 536         $shm = implode( ' | ', $links );
 537         $note = wfMsg( 'rclinks', $cl, $dl, $shm );
 538         return $note;
 539 }
 540
 541
 542 /**
 543  * Makes change an option link which carries all the other options
 544  * @param $title see Title
 545  * @param $override
 546  * @param $options
 547  */
 548 function makeOptionsLink( $title, $override, $options, $active = false ) {
 549         global $wgUser, $wgContLang;
 550         $sk = $wgUser->getSkin();
 551         return $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 552                 htmlspecialchars( $title ), wfArrayToCGI( $override, $options ), '', '',
 553                 $active ? 'style="font-weight: bold;"' : '' );
 554 }
 555
 556 /**
 557  * Creates the options panel.
 558  * @param $defaults
 559  * @param $nondefaults
 560  */
 561 function rcOptionsPanel( $defaults, $nondefaults ) {
 562         global $wgLang, $wgUser, $wgRCLinkLimits, $wgRCLinkDays;
 563
 564         $options = $nondefaults + $defaults;
 565
 566         if( $options['from'] )
 567                 $note = wfMsgExt( 'rcnotefrom', array( 'parseinline' ),
 568                         $wgLang->formatNum( $options['limit'] ),
 569                         $wgLang->timeanddate( $options['from'], true ) );
 570         else
 571                 $note = wfMsgExt( 'rcnote', array( 'parseinline' ),
 572                         $wgLang->formatNum( $options['limit'] ),
 573                         $wgLang->formatNum( $options['days'] ),
 574                         $wgLang->timeAndDate( wfTimestampNow(), true ) );
 575
 576         # Sort data for display and make sure it's unique after we've added user data.
 577         $wgRCLinkLimits[] = $options['limit'];
 578         $wgRCLinkDays[] = $options['days'];
 579         sort($wgRCLinkLimits);
 580         sort($wgRCLinkDays);
 581         $wgRCLinkLimits = array_unique($wgRCLinkLimits);
 582         $wgRCLinkDays = array_unique($wgRCLinkDays);
 583
 584         // limit links
 585         foreach( $wgRCLinkLimits as $value ) {
 586                 $cl[] = makeOptionsLink( $wgLang->formatNum( $value ),
 587                         array( 'limit' => $value ), $nondefaults, $value == $options['limit'] ) ;
 588         }
 589         $cl = implode( ' | ', $cl);
 590
 591         // day links, reset 'from' to none
 592         foreach( $wgRCLinkDays as $value ) {
 593                 $dl[] = makeOptionsLink( $wgLang->formatNum( $value ),
 594                         array( 'days' => $value, 'from' => '' ), $nondefaults, $value == $options['days'] ) ;
 595         }
 596         $dl = implode( ' | ', $dl);
 597
 598
 599         // show/hide links
 600         $showhide = array( wfMsg( 'show' ), wfMsg( 'hide' ));
 601         $minorLink = makeOptionsLink( $showhide[1-$options['hideminor']],
 602                 array( 'hideminor' => 1-$options['hideminor'] ), $nondefaults);
 603         $botLink = makeOptionsLink( $showhide[1-$options['hidebots']],
 604                 array( 'hidebots' => 1-$options['hidebots'] ), $nondefaults);
 605         $anonsLink = makeOptionsLink( $showhide[ 1 - $options['hideanons'] ],
 606                 array( 'hideanons' => 1 - $options['hideanons'] ), $nondefaults );
 607         $liuLink   = makeOptionsLink( $showhide[1-$options['hideliu']],
 608                 array( 'hideliu' => 1-$options['hideliu'] ), $nondefaults);
 609         $patrLink  = makeOptionsLink( $showhide[1-$options['hidepatrolled']],
 610                 array( 'hidepatrolled' => 1-$options['hidepatrolled'] ), $nondefaults);
 611         $myselfLink = makeOptionsLink( $showhide[1-$options['hidemyself']],
 612                 array( 'hidemyself' => 1-$options['hidemyself'] ), $nondefaults);
 613
 614         $links[] = wfMsgHtml( 'rcshowhideminor', $minorLink );
 615         $links[] = wfMsgHtml( 'rcshowhidebots', $botLink );
 616         $links[] = wfMsgHtml( 'rcshowhideanons', $anonsLink );
 617         $links[] = wfMsgHtml( 'rcshowhideliu', $liuLink );
 618         if( $wgUser->useRCPatrol() )
 619                 $links[] = wfMsgHtml( 'rcshowhidepatr', $patrLink );
 620         $links[] = wfMsgHtml( 'rcshowhidemine', $myselfLink );
 621         $hl = implode( ' | ', $links );
 622
 623         // show from this onward link
 624         $now = $wgLang->timeanddate( wfTimestampNow(), true );
 625         $tl =  makeOptionsLink( $now, array( 'from' => wfTimestampNow()), $nondefaults );
 626
 627         $rclinks = wfMsgExt( 'rclinks', array( 'parseinline', 'replaceafter'),
 628                 $cl, $dl, $hl );
 629         $rclistfrom = wfMsgExt( 'rclistfrom', array( 'parseinline', 'replaceafter'), $tl );
 630         return "$note<br />$rclinks<br />$rclistfrom";
 631
 632 }
 633
 634 /**
 635  * Creates the choose namespace selection
 636  *
 637  * @private
 638  *
 639  * @param $namespace Mixed: the key of the currently selected namespace, empty string
 640  *              if there is none
 641  * @param $invert Bool: whether to invert the namespace selection
 642  * @param $nondefaults Array: an array of non default options to be remembered
 643  * @param $categories_any Bool: Default value for the checkbox
 644  *
 645  * @return string
 646  */
 647 function rcNamespaceForm( $namespace, $invert, $nondefaults, $categories_any ) {
 648         global $wgScript, $wgAllowCategorizedRecentChanges, $wgRequest;
 649         $t = SpecialPage::getTitleFor( 'Recentchanges' );
 650
 651         $namespaceselect = HTMLnamespaceselector($namespace, '');
 652         $submitbutton = '<input type="submit" value="' . wfMsgHtml( 'allpagessubmit' ) . "\" />\n";
 653         $invertbox = "<input type='checkbox' name='invert' value='1' id='nsinvert'" . ( $invert ? ' checked="checked"' : '' ) . ' />';
 654
 655         if ( $wgAllowCategorizedRecentChanges ) {
 656                 $categories = trim ( $wgRequest->getVal ( 'categories' , "" ) ) ;
 657                 $cb_arr = array( 'type' => 'checkbox', 'name' => 'categories_any', 'value' => "1" ) ;
 658                 if ( $categories_any ) $cb_arr['checked'] = "checked" ;
 659                 $catbox = "<br />" ;
 660                 $catbox .= wfMsgExt('rc_categories', array('parseinline')) . " ";
 661                 $catbox .= wfElement('input', array( 'type' => 'text', 'name' => 'categories', 'value' => $categories));
 662                 $catbox .= " &nbsp;" ;
 663                 $catbox .= wfElement('input', $cb_arr );
 664                 $catbox .= wfMsgExt('rc_categories_any', array('parseinline'));
 665         } else {
 666                 $catbox = "" ;
 667         }
 668
 669         $out = "<div class='namespacesettings'><form method='get' action='{$wgScript}'>\n";
 670
 671         foreach ( $nondefaults as $key => $value ) {
 672                 if ($key != 'namespace' && $key != 'invert')
 673                         $out .= wfElement('input', array( 'type' => 'hidden', 'name' => $key, 'value' => $value));
 674         }
 675
 676         $out .= '<input type="hidden" name="title" value="'.$t->getPrefixedText().'" />';
 677         $out .= "
 678 <div id='nsselect' class='recentchanges'>
 679         <label for='namespace'>" . wfMsgHtml('namespace') . "</label>
 680         {$namespaceselect}{$submitbutton}{$invertbox} <label for='nsinvert'>" . wfMsgHtml('invert') . "</label>{$catbox}\n</div>";
 681         $out .= '</form></div>';
 682         return $out;
 683 }
 684
 685
 686 /**
 687  * Format a diff for the newsfeed
 688  */
 689 function rcFormatDiff( $row ) {
 690         global $wgUser;
 691
 692         $titleObj = Title::makeTitle( $row->rc_namespace, $row->rc_title );
 693         $timestamp = wfTimestamp( TS_MW, $row->rc_timestamp );
 694         $actiontext = '';
 695         if( $row->rc_type == RC_LOG ) {
 696                 if( $row->rc_deleted & LogPage::DELETED_ACTION ) {
 697                         $actiontext = wfMsgHtml('rev-deleted-event');
 698                 } else {
 699                         $actiontext = LogPage::actionText( $row->rc_log_type, $row->rc_log_action,
 700                                 $titleObj, $wgUser->getSkin(), LogPage::extractParams($row->rc_params,true,true) );
 701                 }
 702         }
 703         return rcFormatDiffRow( $titleObj,
 704                 $row->rc_last_oldid, $row->rc_this_oldid,
 705                 $timestamp,
 706                 ($row->rc_deleted & Revision::DELETED_COMMENT) ? wfMsgHtml('rev-deleted-comment') : $row->rc_comment,
 707                 $actiontext );
 708 }
 709
 710 function rcFormatDiffRow( $title, $oldid, $newid, $timestamp, $comment, $actiontext='' ) {
 711         global $wgFeedDiffCutoff, $wgContLang, $wgUser;
 712         wfProfileIn( __FUNCTION__ );
 713
 714         $skin = $wgUser->getSkin();
 715         # log enties
 716         if( $actiontext ) {
 717                 $comment = "$actiontext $comment";
 718         }
 719         $completeText = '<p>' . $skin->formatComment( $comment ) . "</p>\n";
 720
 721         //NOTE: Check permissions for anonymous users, not current user.
 722         //      No "privileged" version should end up in the cache.
 723         //      Most feed readers will not log in anway.
 724         $anon = new User();
 725         $accErrors = $title->getUserPermissionsErrors( 'read', $anon, true );
 726
 727         if( $title->getNamespace() >= 0 && !$accErrors ) {
 728                 if( $oldid ) {
 729                         wfProfileIn( __FUNCTION__."-dodiff" );
 730
 731                         $de = new DifferenceEngine( $title, $oldid, $newid );
 732                         #$diffText = $de->getDiff( wfMsg( 'revisionasof',
 733                         #       $wgContLang->timeanddate( $timestamp ) ),
 734                         #       wfMsg( 'currentrev' ) );
 735                         $diffText = $de->getDiff(
 736                                 wfMsg( 'previousrevision' ), // hack
 737                                 wfMsg( 'revisionasof',
 738                                         $wgContLang->timeanddate( $timestamp ) ) );
 739
 740
 741                         if ( strlen( $diffText ) > $wgFeedDiffCutoff ) {
 742                                 // Omit large diffs
 743                                 $diffLink = $title->escapeFullUrl(
 744                                         'diff=' . $newid .
 745                                         '&oldid=' . $oldid );
 746                                 $diffText = '<a href="' .
 747                                         $diffLink .
 748                                         '">' .
 749                                         htmlspecialchars( wfMsgForContent( 'difference' ) ) .
 750                                         '</a>';
 751                         } elseif ( $diffText === false ) {
 752                                 // Error in diff engine, probably a missing revision
 753                                 $diffText = "<p>Can't load revision $newid</p>";
 754                         } else {
 755                                 // Diff output fine, clean up any illegal UTF-8
 756                                 $diffText = UtfNormal::cleanUp( $diffText );
 757                                 $diffText = rcApplyDiffStyle( $diffText );
 758                         }
 759                         wfProfileOut( __FUNCTION__."-dodiff" );
 760                 } else {
 761                         $rev = Revision::newFromId( $newid );
 762                         if( is_null( $rev ) ) {
 763                                 $newtext = '';
 764                         } else {
 765                                 $newtext = $rev->getText();
 766                         }
 767                         $diffText = '<p><b>' . wfMsg( 'newpage' ) . '</b></p>' .
 768                                 '<div>' . nl2br( htmlspecialchars( $newtext ) ) . '</div>';
 769                 }
 770                 $completeText .= $diffText;
 771         }
 772
 773         wfProfileOut( __FUNCTION__ );
 774         return $completeText;
 775 }
 776
 777 /**
 778  * Hacky application of diff styles for the feeds.
 779  * Might be 'cleaner' to use DOM or XSLT or something,
 780  * but *gack* it's a pain in the ass.
 781  *
 782  * @param $text String:
 783  * @return string
 784  * @private
 785  */
 786 function rcApplyDiffStyle( $text ) {
 787         $styles = array(
 788                 'diff'             => 'background-color: white; color:black;',
 789                 'diff-otitle'      => 'background-color: white; color:black;',
 790                 'diff-ntitle'      => 'background-color: white; color:black;',
 791                 'diff-addedline'   => 'background: #cfc; color:black; font-size: smaller;',
 792                 'diff-deletedline' => 'background: #ffa; color:black; font-size: smaller;',
 793                 'diff-context'     => 'background: #eee; color:black; font-size: smaller;',
 794                 'diffchange'       => 'color: red; font-weight: bold; text-decoration: none;',
 795         );
 796
 797         foreach( $styles as $class => $style ) {
 798                 $text = preg_replace( "/(<[^>]+)class=(['\"])$class\\2([^>]*>)/",
 799                         "\\1style=\"$style\"\\3", $text );
 800         }
 801
 802         return $text;
 803 }