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