includes/SpecialRecentchanges.php

   1 <?php
   2 /**
   3  *
   4  * @package MediaWiki
   5  * @subpackage SpecialPage
   6  */
   7
   8 /**
   9  *
  10  */
  11 require_once( 'Feed.php' );
  12 require_once( 'ChangesList.php' );
  13 require_once( 'Revision.php' );
  14
  15 /**
  16  * Constructor
  17  */
  18 function wfSpecialRecentchanges( $par ) {
  19         global $wgUser, $wgOut, $wgLang, $wgContLang, $wgTitle, $wgMemc, $wgDBname;
  20         global $wgRequest, $wgSitename, $wgLanguageCode, $wgContLanguageCode;
  21         global $wgFeedClasses, $wgUseRCPatrol;
  22         global $wgRCShowWatchingUsers, $wgShowUpdatedMarker;
  23         global $wgLinkCache;
  24         $fname = 'wfSpecialRecentchanges';
  25
  26         # Get query parameters
  27         $feedFormat = $wgRequest->getVal( 'feed' );
  28
  29         $defaultDays = $wgUser->getOption( 'rcdays' );
  30         if ( !$defaultDays ) { $defaultDays = 3; }
  31
  32         $days = $wgRequest->getInt( 'days', $defaultDays );
  33         $hideminor = $wgRequest->getBool( 'hideminor', $wgUser->getOption( 'hideminor' ) ) ? 1 : 0;
  34         list( $limit, $offset ) = wfCheckLimits( 100, 'rclimit' );
  35
  36         # As a feed, use limited settings only
  37         if( $feedFormat ) {
  38                 $from = null;
  39                 $hidebots = 1;
  40                 $hideliu = 0;
  41                 $hidepatrolled = 0;
  42                 global $wgFeedLimit;
  43                 if( $limit > $wgFeedLimit ) {
  44                         $limit = $wgFeedLimit;
  45                 }
  46         } else {
  47                 $from = $wgRequest->getText( 'from' );
  48                 $hidebots = $wgRequest->getBool( 'hidebots', true ) ? 1 : 0;
  49                 $hideliu = $wgRequest->getBool( 'hideliu', false ) ? 1 : 0;
  50                 $hidepatrolled = $wgRequest->getBool( 'hidepatrolled', false ) ? 1 : 0;
  51
  52                 # Get query parameters from path
  53                 if( $par ) {
  54                         $bits = preg_split( '/\s*,\s*/', trim( $par ) );
  55                         if( in_array( 'hidebots', $bits ) ) $hidebots = 1;
  56                         if( in_array( 'bots', $bits ) ) $hidebots = 0;
  57                         if( in_array( 'hideminor', $bits ) ) $hideminor = 1;
  58                         if( in_array( 'minor', $bits ) ) $hideminor = 0;
  59                         if( in_array( 'hideliu', $bits) ) $hideliu = 1;
  60                         if( in_array( 'hidepatrolled', $bits) ) $hidepatrolled = 1;
  61                 }
  62         }
  63
  64
  65         # Database connection and caching
  66         $dbr =& wfGetDB( DB_SLAVE );
  67         extract( $dbr->tableNames( 'recentchanges', 'watchlist' ) );
  68
  69
  70         # 10 seconds server-side caching max
  71         $wgOut->setSquidMaxage( 10 );
  72
  73         # Get last modified date, for client caching
  74         # Don't use this if we are using the patrol feature, patrol changes don't update the timestamp
  75         $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', false, $fname );
  76         if ( $feedFormat || !$wgUseRCPatrol ) {
  77                 if( $lastmod && $wgOut->checkLastModified( $lastmod ) ){
  78                         # Client cache fresh and headers sent, nothing more to do.
  79                         return;
  80                 }
  81         }
  82
  83         # Output header
  84         $rctext = wfMsgForContent( "recentchangestext" );
  85         $wgOut->addWikiText( $rctext );
  86
  87
  88         $now = wfTimestampNow();
  89         $cutoff_unixtime = time() - ( $days * 86400 );
  90         $cutoff_unixtime = $cutoff_unixtime - ($cutoff_unixtime % 86400);
  91         $cutoff = $dbr->timestamp( $cutoff_unixtime );
  92         if(preg_match('/^[0-9]{14}$/', $from) and $from > wfTimestamp(TS_MW,$cutoff)) {
  93                 $cutoff = $dbr->timestamp($from);
  94         } else {
  95                 unset($from);
  96         }
  97
  98         $sk = $wgUser->getSkin();
  99
 100         $showhide = array( wfMsg( 'show' ), wfMsg( 'hide' ));
 101
 102         $hidem  = ( $hideminor )    ? 'AND rc_minor=0' : '';
 103         $hidem .= ( $hidebots )     ? ' AND rc_bot=0' : '';
 104         $hidem .= ( $hideliu )      ? ' AND rc_user=0' : '';
 105         $hidem .= ( $hidepatrolled )? ' AND rc_patrolled=0' : '';
 106
 107         $urlparams = array( 'hideminor' => $hideminor,  'hideliu'       => $hideliu,
 108                             'hidebots'  => $hidebots,   'hidepatrolled' => $hidepatrolled,
 109                             'limit'     => $limit );
 110         $hideparams = wfArrayToCGI( $urlparams );
 111
 112         $minorLink = $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 113           $showhide[1-$hideminor], wfArrayToCGI( array( 'hideminor' => 1-$hideminor ), $urlparams ) );
 114         $botLink = $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 115           $showhide[1-$hidebots], wfArrayToCGI( array( 'hidebots' => 1-$hidebots ), $urlparams ) );
 116         $liuLink = $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 117           $showhide[1-$hideliu], wfArrayToCGI( array( 'hideliu' => 1-$hideliu ), $urlparams ) );
 118         $patrLink = $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 119           $showhide[1-$hidepatrolled], wfArrayToCGI( array( 'hidepatrolled' => 1-$hidepatrolled ), $urlparams ) );
 120
 121         $uid = $wgUser->getID();
 122
 123         // Perform query
 124         $sql2 = "SELECT $recentchanges.*" . ($uid ? ",wl_user,wl_notificationtimestamp" : "") . " FROM $recentchanges " .
 125           ($uid ? "LEFT OUTER JOIN $watchlist ON wl_user={$uid} AND wl_title=rc_title AND wl_namespace=rc_namespace " : "") .
 126           "WHERE rc_timestamp > '{$cutoff}' {$hidem} " .
 127           "ORDER BY rc_timestamp DESC LIMIT {$limit}";
 128         $res = $dbr->query( $sql2, $fname );
 129
 130         // Fetch results, prepare a batch link existence check query
 131         $rows = array();
 132         $batch = new LinkBatch;
 133         while( $row = $dbr->fetchObject( $res ) ){
 134                 $rows[] = $row;
 135                 // User page link
 136                 $title = Title::makeTitleSafe( NS_USER, $row->rc_user_text );
 137                 $batch->addObj( $title );
 138
 139                 // User talk
 140                 $title = Title::makeTitleSafe( NS_USER_TALK, $row->rc_user_text );
 141                 $batch->addObj( $title );
 142
 143         }
 144         $dbr->freeResult( $res );
 145
 146         // Run existence checks
 147         $batch->execute( $wgLinkCache );
 148
 149         if(isset($from)) {
 150                 $note = wfMsg( 'rcnotefrom', $wgLang->formatNum( $limit ),
 151                         $wgLang->timeanddate( $from, true ) );
 152         } else {
 153                 $note = wfMsg( 'rcnote', $wgLang->formatNum( $limit ), $wgLang->formatNum( $days ) );
 154         }
 155         $wgOut->addHTML( "\n<hr />\n{$note}\n<br />" );
 156
 157         $note = rcDayLimitLinks( $days, $limit, 'Recentchanges', $hideparams, false, $minorLink, $botLink, $liuLink, $patrLink );
 158
 159         $note .= "<br />\n" . wfMsg( 'rclistfrom',
 160           $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 161           $wgLang->timeanddate( $now, true ), $hideparams.'&from='.$now ) );
 162
 163         $wgOut->addHTML( $note."\n" );
 164
 165         if( $feedFormat ) {
 166                 rcOutputFeed( $rows, $feedFormat, $limit, $hideminor, $lastmod );
 167         } else {
 168                 # Web output...
 169                 $wgOut->setSyndicated( true );
 170                 $list =& new ChangesList( $sk );
 171                 $s = $list->beginRecentChangesList();
 172                 $counter = 1;
 173                 foreach( $rows as $obj ){
 174                         if( $limit == 0) {
 175                                 break;
 176                         }
 177
 178                         if ( ! ( $hideminor     && $obj->rc_minor     ) &&
 179                              ! ( $hidepatrolled && $obj->rc_patrolled ) ) {
 180                                 $rc = RecentChange::newFromRow( $obj );
 181                                 $rc->counter = $counter++;
 182
 183                                 if ($wgShowUpdatedMarker
 184                                         && $wgUser->getOption( 'showupdated' )
 185                                         && !empty( $obj->wl_notificationtimestamp )
 186                                         && ($obj->rc_timestamp >= $obj->wl_notificationtimestamp)) {
 187                                                 $rc->notificationtimestamp = true;
 188                                 } else {
 189                                         $rc->notificationtimestamp = false;
 190                                 }
 191
 192                                 if ($wgRCShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' )) {
 193                                         $sql3 = "SELECT COUNT(*) AS n FROM $watchlist WHERE wl_title='" . $dbr->strencode($obj->rc_title) ."' AND wl_namespace=$obj->rc_namespace" ;
 194                                         $res3 = $dbr->query( $sql3, 'wfSpecialRecentChanges');
 195                                         $x = $dbr->fetchObject( $res3 );
 196                                         $rc->numberofWatchingusers = $x->n;
 197                                 } else {
 198                                         $rc->numberofWatchingusers = 0;
 199                                 }
 200                                 $s .= $list->recentChangesLine( $rc, !empty( $obj->wl_user ) );
 201                                 --$limit;
 202                         }
 203                 }
 204                 $s .= $list->endRecentChangesList();
 205                 $wgOut->addHTML( $s );
 206         }
 207 }
 208
 209 function rcOutputFeed( $rows, $feedFormat, $limit, $hideminor, $lastmod ) {
 210         global $messageMemc, $wgDBname, $wgFeedCacheTimeout;
 211         global $wgFeedClasses, $wgTitle, $wgSitename, $wgContLanguageCode;
 212
 213         if( !isset( $wgFeedClasses[$feedFormat] ) ) {
 214                 wfHttpError( 500, "Internal Server Error", "Unsupported feed type." );
 215                 return false;
 216         }
 217
 218         $timekey = "$wgDBname:rcfeed:timestamp";
 219         $key = "$wgDBname:rcfeed:$feedFormat:limit:$limit:minor:$hideminor";
 220
 221         $feedTitle = $wgSitename . ' - ' . wfMsgForContent( 'recentchanges' ) .
 222                 ' [' . $wgContLanguageCode . ']';
 223         $feed = new $wgFeedClasses[$feedFormat](
 224                 $feedTitle,
 225                 htmlspecialchars( wfMsgForContent( 'recentchangestext' ) ),
 226                 $wgTitle->getFullUrl() );
 227
 228         /**
 229          * Bumping around loading up diffs can be pretty slow, so where
 230          * possible we want to cache the feed output so the next visitor
 231          * gets it quick too.
 232          */
 233         $cachedFeed = false;
 234         if( $feedLastmod = $messageMemc->get( $timekey ) ) {
 235                 /**
 236                  * If the cached feed was rendered very recently, we may
 237                  * go ahead and use it even if there have been edits made
 238                  * since it was rendered. This keeps a swarm of requests
 239                  * from being too bad on a super-frequently edited wiki.
 240                  */
 241                 if( time() - wfTimestamp( TS_UNIX, $feedLastmod )
 242                                 < $wgFeedCacheTimeout
 243                         || wfTimestamp( TS_UNIX, $feedLastmod )
 244                                 > wfTimestamp( TS_UNIX, $lastmod ) ) {
 245                         wfDebug( "RC: loading feed from cache ($key; $feedLastmod; $lastmod)...\n" );
 246                         $cachedFeed = $messageMemc->get( $key );
 247                 } else {
 248                         wfDebug( "RC: cached feed timestamp check failed ($feedLastmod; $lastmod)\n" );
 249                 }
 250         }
 251         if( is_string( $cachedFeed ) ) {
 252                 wfDebug( "RC: Outputting cached feed\n" );
 253                 $feed->httpHeaders();
 254                 echo $cachedFeed;
 255         } else {
 256                 wfDebug( "RC: rendering new feed and caching it\n" );
 257                 ob_start();
 258                 rcDoOutputFeed( $rows, $feed );
 259                 $cachedFeed = ob_get_contents();
 260                 ob_end_flush();
 261
 262                 $expire = 3600 * 24; # One day
 263                 $messageMemc->set( $key, $cachedFeed );
 264                 $messageMemc->set( $timekey, wfTimestamp( TS_MW ), $expire );
 265         }
 266         return true;
 267 }
 268
 269 function rcDoOutputFeed( $rows, &$feed ) {
 270         global $wgSitename, $wgFeedClasses, $wgContLanguageCode;
 271
 272         $feed->outHeader();
 273
 274         # Merge adjacent edits by one user
 275         $sorted = array();
 276         $n = 0;
 277         foreach( $rows as $obj ) {
 278                 if( $n > 0 &&
 279                         $obj->rc_namespace >= 0 &&
 280                         $obj->rc_cur_id == $sorted[$n-1]->rc_cur_id &&
 281                         $obj->rc_user_text == $sorted[$n-1]->rc_user_text ) {
 282                         $sorted[$n-1]->rc_last_oldid = $obj->rc_last_oldid;
 283                 } else {
 284                         $sorted[$n] = $obj;
 285                         $n++;
 286                 }
 287                 $first = false;
 288         }
 289
 290         foreach( $sorted as $obj ) {
 291                 $title = Title::makeTitle( $obj->rc_namespace, $obj->rc_title );
 292                 $talkpage = $title->getTalkPage();
 293                 $item = new FeedItem(
 294                         $title->getPrefixedText(),
 295                         rcFormatDiff( $obj ),
 296                         $title->getFullURL(),
 297                         $obj->rc_timestamp,
 298                         $obj->rc_user_text,
 299                         $talkpage->getFullURL()
 300                         );
 301                 $feed->outItem( $item );
 302         }
 303         $feed->outFooter();
 304 }
 305
 306 /**
 307  *
 308  */
 309 function rcCountLink( $lim, $d, $page='Recentchanges', $more='' ) {
 310         global $wgUser, $wgLang, $wgContLang;
 311         $sk = $wgUser->getSkin();
 312         $s = $sk->makeKnownLink( $wgContLang->specialPage( $page ),
 313           ($lim ? $wgLang->formatNum( "{$lim}" ) : wfMsg( 'recentchangesall' ) ), "{$more}" .
 314           ($d ? "days={$d}&" : '') . 'limit='.$lim );
 315         return $s;
 316 }
 317
 318 /**
 319  *
 320  */
 321 function rcDaysLink( $lim, $d, $page='Recentchanges', $more='' ) {
 322         global $wgUser, $wgLang, $wgContLang;
 323         $sk = $wgUser->getSkin();
 324         $s = $sk->makeKnownLink( $wgContLang->specialPage( $page ),
 325           ($d ? $wgLang->formatNum( "{$d}" ) : wfMsg( 'recentchangesall' ) ), $more.'days='.$d .
 326           ($lim ? '&limit='.$lim : '') );
 327         return $s;
 328 }
 329
 330 /**
 331  * Used also by Recentchangeslinked
 332  */
 333 function rcDayLimitLinks( $days, $limit, $page='Recentchanges', $more='', $doall = false, $minorLink = '',
 334         $botLink = '', $liuLink = '', $patrLink = '' ) {
 335         if ($more != '') $more .= '&';
 336         $cl = rcCountLink( 50, $days, $page, $more ) . ' | ' .
 337           rcCountLink( 100, $days, $page, $more  ) . ' | ' .
 338           rcCountLink( 250, $days, $page, $more  ) . ' | ' .
 339           rcCountLink( 500, $days, $page, $more  ) .
 340           ( $doall ? ( ' | ' . rcCountLink( 0, $days, $page, $more ) ) : '' );
 341         $dl = rcDaysLink( $limit, 1, $page, $more  ) . ' | ' .
 342           rcDaysLink( $limit, 3, $page, $more  ) . ' | ' .
 343           rcDaysLink( $limit, 7, $page, $more  ) . ' | ' .
 344           rcDaysLink( $limit, 14, $page, $more  ) . ' | ' .
 345           rcDaysLink( $limit, 30, $page, $more  ) .
 346           ( $doall ? ( ' | ' . rcDaysLink( $limit, 0, $page, $more ) ) : '' );
 347         $shm = wfMsg( 'showhideminor', $minorLink, $botLink, $liuLink, $patrLink );
 348         $note = wfMsg( 'rclinks', $cl, $dl, $shm );
 349         return $note;
 350 }
 351
 352 /**
 353  * Format a diff for the newsfeed
 354  */
 355 function rcFormatDiff( $row ) {
 356         $fname = 'rcFormatDiff';
 357         wfProfileIn( $fname );
 358
 359         require_once( 'DifferenceEngine.php' );
 360         $comment = "<p>" . htmlspecialchars( $row->rc_comment ) . "</p>\n";
 361
 362         if( $row->rc_namespace >= 0 ) {
 363                 global $wgContLang;
 364
 365                 #$diff =& new DifferenceEngine( $row->rc_this_oldid, $row->rc_last_oldid, $row->rc_id );
 366                 #$diff->showDiffPage();
 367
 368                 $titleObj = Title::makeTitle( $row->rc_namespace, $row->rc_title );
 369                 $dbr =& wfGetDB( DB_SLAVE );
 370                 $newrev =& Revision::newFromTitle( $titleObj, $row->rc_this_oldid );
 371                 if( $newrev ) {
 372                         $newtext = $newrev->getText();
 373                 } else {
 374                         $diffText = "<p>Can't load revision $row->rc_this_oldid</p>";
 375                         wfProfileOut( $fname );
 376                         return $comment . $diffText;
 377                 }
 378
 379                 if( $row->rc_last_oldid ) {
 380                         wfProfileIn( "$fname-dodiff" );
 381                         $oldrev =& Revision::newFromId( $row->rc_last_oldid );
 382                         if( !$oldrev ) {
 383                                 $diffText = "<p>Can't load old revision $row->rc_last_oldid</p>";
 384                                 wfProfileOut( $fname );
 385                                 return $comment . $diffText;
 386                         }
 387                         $oldtext = $oldrev->getText();
 388
 389                         # Old entries may contain illegal characters
 390                         # which will damage output
 391                         $oldtext = UtfNormal::cleanUp( $oldtext );
 392
 393                         global $wgFeedDiffCutoff;
 394                         if( strlen( $newtext ) > $wgFeedDiffCutoff ||
 395                                 strlen( $oldtext ) > $wgFeedDiffCutoff ) {
 396                                 $diffLink = $titleObj->escapeFullUrl(
 397                                         'diff=' . $row->rc_this_oldid .
 398                                         '&oldid=' . $row->rc_last_oldid );
 399                                 $diffText = '<a href="' .
 400                                         $diffLink .
 401                                         '">' .
 402                                         htmlspecialchars( wfMsgForContent( 'difference' ) ) .
 403                                         '</a>';
 404                         } else {
 405                                 $diffText = DifferenceEngine::getDiff( $oldtext, $newtext,
 406                                   wfMsg( 'revisionasof', $wgContLang->timeanddate( $row->rc_timestamp ) ),
 407                                   wfMsg( 'currentrev' ) );
 408                         }
 409                         wfProfileOut( "$fname-dodiff" );
 410                 } else {
 411                         $diffText = '<p><b>' . wfMsg( 'newpage' ) . '</b></p>' .
 412                                 '<div>' . nl2br( htmlspecialchars( $newtext ) ) . '</div>';
 413                 }
 414
 415                 wfProfileOut( $fname );
 416                 return $comment . $diffText;
 417         }
 418
 419         wfProfileOut( $fname );
 420         return $comment;
 421 }
 422
 423 ?>