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