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         $hideparams = wfArrayToCGI( $urlparams );
 110
 111         $minorLink = $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 112           $showhide[1-$hideminor], wfArrayToCGI( array( 'hideminor' => 1-$hideminor ), $urlparams ) );
 113         $botLink = $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 114           $showhide[1-$hidebots], wfArrayToCGI( array( 'hidebots' => 1-$hidebots ), $urlparams ) );
 115         $liuLink = $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 116           $showhide[1-$hideliu], wfArrayToCGI( array( 'hideliu' => 1-$hideliu ), $urlparams ) );
 117         $patrLink = $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 118           $showhide[1-$hidepatrolled], wfArrayToCGI( array( 'hidepatrolled' => 1-$hidepatrolled ), $urlparams ) );
 119
 120         $uid = $wgUser->getID();
 121
 122         // Perform query
 123         $sql2 = "SELECT $recentchanges.*" . ($uid ? ",wl_user,wl_notificationtimestamp" : "") . " FROM $recentchanges " .
 124           ($uid ? "LEFT OUTER JOIN $watchlist ON wl_user={$uid} AND wl_title=rc_title AND wl_namespace=rc_namespace " : "") .
 125           "WHERE rc_timestamp > '{$cutoff}' {$hidem} " .
 126           "ORDER BY rc_timestamp DESC LIMIT {$limit}";
 127         $res = $dbr->query( $sql2, $fname );
 128
 129         // Fetch results, prepare a batch link existence check query
 130         $rows = array();
 131         $batch = new LinkBatch;
 132         while( $row = $dbr->fetchObject( $res ) ){
 133                 $rows[] = $row;
 134                 // User page link
 135                 $title = Title::makeTitleSafe( NS_USER, $row->rc_user_text );
 136                 $batch->addObj( $title );
 137
 138                 // User talk
 139                 $title = Title::makeTitleSafe( NS_USER_TALK, $row->rc_user_text );
 140                 $batch->addObj( $title );
 141
 142         }
 143         $dbr->freeResult( $res );
 144
 145         // Run existence checks
 146         $batch->execute( $wgLinkCache );
 147
 148         if(isset($from)) {
 149                 $note = wfMsg( 'rcnotefrom', $wgLang->formatNum( $limit ),
 150                         $wgLang->timeanddate( $from, true ) );
 151         } else {
 152                 $note = wfMsg( 'rcnote', $wgLang->formatNum( $limit ), $wgLang->formatNum( $days ) );
 153         }
 154         $wgOut->addHTML( "\n<hr />\n{$note}\n<br />" );
 155
 156         $note = rcDayLimitLinks( $days, $limit, 'Recentchanges', $hideparams, false, $minorLink, $botLink, $liuLink, $patrLink );
 157
 158         $note .= "<br />\n" . wfMsg( 'rclistfrom',
 159           $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 160           $wgLang->timeanddate( $now, true ), $hideparams.'&from='.$now ) );
 161
 162         $wgOut->addHTML( $note."\n" );
 163
 164         if( $feedFormat ) {
 165                 rcOutputFeed( $rows, $feedFormat, $limit, $hideminor, $lastmod );
 166         } else {
 167                 # Web output...
 168                 $wgOut->setSyndicated( true );
 169                 $list =& new ChangesList( $sk );
 170                 $s = $list->beginRecentChangesList();
 171                 $counter = 1;
 172                 foreach( $rows as $obj ){
 173                         if( $limit == 0) {
 174                                 break;
 175                         }
 176
 177                         if ( ! ( $hideminor     && $obj->rc_minor     ) &&
 178                              ! ( $hidepatrolled && $obj->rc_patrolled ) ) {
 179                                 $rc = RecentChange::newFromRow( $obj );
 180                                 $rc->counter = $counter++;
 181
 182                                 if ($wgShowUpdatedMarker
 183                                         && $wgUser->getOption( 'showupdated' )
 184                                         && !empty( $obj->wl_notificationtimestamp )
 185                                         && ($obj->rc_timestamp >= $obj->wl_notificationtimestamp)) {
 186                                                 $rc->notificationtimestamp = true;
 187                                 } else {
 188                                         $rc->notificationtimestamp = false;
 189                                 }
 190
 191                                 if ($wgRCShowWatchingUsers && $wgUser->getOption( 'shownumberswatching' )) {
 192                                         $sql3 = "SELECT COUNT(*) AS n FROM $watchlist WHERE wl_title='" . $dbr->strencode($obj->rc_title) ."' AND wl_namespace=$obj->rc_namespace" ;
 193                                         $res3 = $dbr->query( $sql3, 'wfSpecialRecentChanges');
 194                                         $x = $dbr->fetchObject( $res3 );
 195                                         $rc->numberofWatchingusers = $x->n;
 196                                 } else {
 197                                         $rc->numberofWatchingusers = 0;
 198                                 }
 199                                 $s .= $list->recentChangesLine( $rc, !empty( $obj->wl_user ) );
 200                                 --$limit;
 201                         }
 202                 }
 203                 $s .= $list->endRecentChangesList();
 204                 $wgOut->addHTML( $s );
 205         }
 206 }
 207
 208 function rcOutputFeed( $rows, $feedFormat, $limit, $hideminor, $lastmod ) {
 209         global $messageMemc, $wgDBname, $wgFeedCacheTimeout;
 210         global $wgFeedClasses, $wgTitle, $wgSitename, $wgContLanguageCode;
 211
 212         if( !isset( $wgFeedClasses[$feedFormat] ) ) {
 213                 wfHttpError( 500, "Internal Server Error", "Unsupported feed type." );
 214                 return false;
 215         }
 216
 217         $timekey = "$wgDBname:rcfeed:$feedFormat:timestamp";
 218         $key = "$wgDBname:rcfeed:$feedFormat:limit:$limit:minor:$hideminor";
 219
 220         $feedTitle = $wgSitename . ' - ' . wfMsgForContent( 'recentchanges' ) .
 221                 ' [' . $wgContLanguageCode . ']';
 222         $feed = new $wgFeedClasses[$feedFormat](
 223                 $feedTitle,
 224                 htmlspecialchars( wfMsgForContent( 'recentchangestext' ) ),
 225                 $wgTitle->getFullUrl() );
 226
 227         /**
 228          * Bumping around loading up diffs can be pretty slow, so where
 229          * possible we want to cache the feed output so the next visitor
 230          * gets it quick too.
 231          */
 232         $cachedFeed = false;
 233         if( $feedLastmod = $messageMemc->get( $timekey ) ) {
 234                 /**
 235                  * If the cached feed was rendered very recently, we may
 236                  * go ahead and use it even if there have been edits made
 237                  * since it was rendered. This keeps a swarm of requests
 238                  * from being too bad on a super-frequently edited wiki.
 239                  */
 240                 if( time() - wfTimestamp( TS_UNIX, $feedLastmod )
 241                                 < $wgFeedCacheTimeout
 242                         || wfTimestamp( TS_UNIX, $feedLastmod )
 243                                 > wfTimestamp( TS_UNIX, $lastmod ) ) {
 244                         wfDebug( "RC: loading feed from cache ($key; $feedLastmod; $lastmod)...\n" );
 245                         $cachedFeed = $messageMemc->get( $key );
 246                 } else {
 247                         wfDebug( "RC: cached feed timestamp check failed ($feedLastmod; $lastmod)\n" );
 248                 }
 249         }
 250         if( is_string( $cachedFeed ) ) {
 251                 wfDebug( "RC: Outputting cached feed\n" );
 252                 $feed->httpHeaders();
 253                 echo $cachedFeed;
 254         } else {
 255                 wfDebug( "RC: rendering new feed and caching it\n" );
 256                 ob_start();
 257                 rcDoOutputFeed( $rows, $feed );
 258                 $cachedFeed = ob_get_contents();
 259                 ob_end_flush();
 260
 261                 $expire = 3600 * 24; # One day
 262                 $messageMemc->set( $key, $cachedFeed );
 263                 $messageMemc->set( $timekey, wfTimestamp( TS_MW ), $expire );
 264         }
 265         return true;
 266 }
 267
 268 function rcDoOutputFeed( $rows, &$feed ) {
 269         global $wgSitename, $wgFeedClasses, $wgContLanguageCode;
 270
 271         $feed->outHeader();
 272
 273         # Merge adjacent edits by one user
 274         $sorted = array();
 275         $n = 0;
 276         foreach( $rows as $obj ) {
 277                 if( $n > 0 &&
 278                         $obj->rc_namespace >= 0 &&
 279                         $obj->rc_cur_id == $sorted[$n-1]->rc_cur_id &&
 280                         $obj->rc_user_text == $sorted[$n-1]->rc_user_text ) {
 281                         $sorted[$n-1]->rc_last_oldid = $obj->rc_last_oldid;
 282                 } else {
 283                         $sorted[$n] = $obj;
 284                         $n++;
 285                 }
 286                 $first = false;
 287         }
 288
 289         foreach( $sorted as $obj ) {
 290                 $title = Title::makeTitle( $obj->rc_namespace, $obj->rc_title );
 291                 $talkpage = $title->getTalkPage();
 292                 $item = new FeedItem(
 293                         $title->getPrefixedText(),
 294                         rcFormatDiff( $obj ),
 295                         $title->getFullURL(),
 296                         $obj->rc_timestamp,
 297                         $obj->rc_user_text,
 298                         $talkpage->getFullURL()
 299                         );
 300                 $feed->outItem( $item );
 301         }
 302         $feed->outFooter();
 303 }
 304
 305 /**
 306  *
 307  */
 308 function rcCountLink( $lim, $d, $page='Recentchanges', $more='' ) {
 309         global $wgUser, $wgLang, $wgContLang;
 310         $sk = $wgUser->getSkin();
 311         $s = $sk->makeKnownLink( $wgContLang->specialPage( $page ),
 312           ($lim ? $wgLang->formatNum( "{$lim}" ) : wfMsg( 'recentchangesall' ) ), "{$more}" .
 313           ($d ? "days={$d}&" : '') . 'limit='.$lim );
 314         return $s;
 315 }
 316
 317 /**
 318  *
 319  */
 320 function rcDaysLink( $lim, $d, $page='Recentchanges', $more='' ) {
 321         global $wgUser, $wgLang, $wgContLang;
 322         $sk = $wgUser->getSkin();
 323         $s = $sk->makeKnownLink( $wgContLang->specialPage( $page ),
 324           ($d ? $wgLang->formatNum( "{$d}" ) : wfMsg( 'recentchangesall' ) ), $more.'days='.$d .
 325           ($lim ? '&limit='.$lim : '') );
 326         return $s;
 327 }
 328
 329 /**
 330  * Used also by Recentchangeslinked
 331  */
 332 function rcDayLimitLinks( $days, $limit, $page='Recentchanges', $more='', $doall = false, $minorLink = '',
 333         $botLink = '', $liuLink = '', $patrLink = '' ) {
 334         if ($more != '') $more .= '&';
 335         $cl = rcCountLink( 50, $days, $page, $more ) . ' | ' .
 336           rcCountLink( 100, $days, $page, $more  ) . ' | ' .
 337           rcCountLink( 250, $days, $page, $more  ) . ' | ' .
 338           rcCountLink( 500, $days, $page, $more  ) .
 339           ( $doall ? ( ' | ' . rcCountLink( 0, $days, $page, $more ) ) : '' );
 340         $dl = rcDaysLink( $limit, 1, $page, $more  ) . ' | ' .
 341           rcDaysLink( $limit, 3, $page, $more  ) . ' | ' .
 342           rcDaysLink( $limit, 7, $page, $more  ) . ' | ' .
 343           rcDaysLink( $limit, 14, $page, $more  ) . ' | ' .
 344           rcDaysLink( $limit, 30, $page, $more  ) .
 345           ( $doall ? ( ' | ' . rcDaysLink( $limit, 0, $page, $more ) ) : '' );
 346         $shm = wfMsg( 'showhideminor', $minorLink, $botLink, $liuLink, $patrLink );
 347         $note = wfMsg( 'rclinks', $cl, $dl, $shm );
 348         return $note;
 349 }
 350
 351 /**
 352  * Format a diff for the newsfeed
 353  */
 354 function rcFormatDiff( $row ) {
 355         $fname = 'rcFormatDiff';
 356         wfProfileIn( $fname );
 357
 358         require_once( 'DifferenceEngine.php' );
 359         $comment = "<p>" . htmlspecialchars( $row->rc_comment ) . "</p>\n";
 360
 361         if( $row->rc_namespace >= 0 ) {
 362                 global $wgContLang;
 363
 364                 #$diff =& new DifferenceEngine( $row->rc_this_oldid, $row->rc_last_oldid, $row->rc_id );
 365                 #$diff->showDiffPage();
 366
 367                 $titleObj = Title::makeTitle( $row->rc_namespace, $row->rc_title );
 368                 $dbr =& wfGetDB( DB_SLAVE );
 369                 $newrev =& Revision::newFromTitle( $titleObj, $row->rc_this_oldid );
 370                 if( $newrev ) {
 371                         $newtext = $newrev->getText();
 372                 } else {
 373                         $diffText = "<p>Can't load revision $row->rc_this_oldid</p>";
 374                         wfProfileOut( $fname );
 375                         return $comment . $diffText;
 376                 }
 377
 378                 if( $row->rc_last_oldid ) {
 379                         wfProfileIn( "$fname-dodiff" );
 380                         $oldrev =& Revision::newFromId( $row->rc_last_oldid );
 381                         if( !$oldrev ) {
 382                                 $diffText = "<p>Can't load old revision $row->rc_last_oldid</p>";
 383                                 wfProfileOut( $fname );
 384                                 return $comment . $diffText;
 385                         }
 386                         $oldtext = $oldrev->getText();
 387
 388                         # Old entries may contain illegal characters
 389                         # which will damage output
 390                         $oldtext = UtfNormal::cleanUp( $oldtext );
 391
 392                         global $wgFeedDiffCutoff;
 393                         if( strlen( $newtext ) > $wgFeedDiffCutoff ||
 394                                 strlen( $oldtext ) > $wgFeedDiffCutoff ) {
 395                                 $diffLink = $titleObj->escapeFullUrl(
 396                                         'diff=' . $row->rc_this_oldid .
 397                                         '&oldid=' . $row->rc_last_oldid );
 398                                 $diffText = '<a href="' .
 399                                         $diffLink .
 400                                         '">' .
 401                                         htmlspecialchars( wfMsgForContent( 'difference' ) ) .
 402                                         '</a>';
 403                         } else {
 404                                 $diffText = DifferenceEngine::getDiff( $oldtext, $newtext,
 405                                   wfMsg( 'revisionasof', $wgContLang->timeanddate( $row->rc_timestamp ) ),
 406                                   wfMsg( 'currentrev' ) );
 407                         }
 408                         wfProfileOut( "$fname-dodiff" );
 409                 } else {
 410                         $diffText = '<p><b>' . wfMsg( 'newpage' ) . '</b></p>' .
 411                                 '<div>' . nl2br( htmlspecialchars( $newtext ) ) . '</div>';
 412                 }
 413
 414                 wfProfileOut( $fname );
 415                 return $comment . $diffText;
 416         }
 417
 418         wfProfileOut( $fname );
 419         return $comment;
 420 }
 421
 422 ?>