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         $fname = 'wfSpecialRecentchanges';
  22
  23         # Get query parameters
  24         $feedFormat = $wgRequest->getVal( 'feed' );
  25
  26         $defaultDays = $wgUser->getOption( 'rcdays' );
  27         if ( !$defaultDays ) { $defaultDays = 3; }
  28
  29         $days = $wgRequest->getInt( 'days', $defaultDays );
  30         $hideminor = $wgRequest->getBool( 'hideminor', $wgUser->getOption( 'hideminor' ) ) ? 1 : 0;
  31         list( $limit, $offset ) = wfCheckLimits( 100, 'rclimit' );
  32
  33         # As a feed, use limited settings only
  34         if( $feedFormat ) {
  35                 $from = null;
  36                 $hidebots = 1;
  37                 $hideliu = 0;
  38                 $hidepatrolled = 0;
  39                 global $wgFeedLimit;
  40                 if( $limit > $wgFeedLimit ) {
  41                         $limit = $wgFeedLimit;
  42                 }
  43         } else {
  44                 $from = $wgRequest->getText( 'from' );
  45                 $hidebots = $wgRequest->getBool( 'hidebots', true ) ? 1 : 0;
  46                 $hideliu = $wgRequest->getBool( 'hideliu', false ) ? 1 : 0;
  47                 $hidepatrolled = $wgRequest->getBool( 'hidepatrolled', false ) ? 1 : 0;
  48
  49                 # Get query parameters from path
  50                 if( $par ) {
  51                         $bits = preg_split( '/\s*,\s*/', trim( $par ) );
  52                         if( in_array( 'hidebots', $bits ) ) $hidebots = 1;
  53                         if( in_array( 'bots', $bits ) ) $hidebots = 0;
  54                         if( in_array( 'hideminor', $bits ) ) $hideminor = 1;
  55                         if( in_array( 'minor', $bits ) ) $hideminor = 0;
  56                         if( in_array( 'hideliu', $bits) ) $hideliu = 1;
  57                         if( in_array( 'hidepatrolled', $bits) ) $hidepatrolled = 1;
  58                 }
  59         }
  60
  61
  62         # Database connection and caching
  63         $dbr =& wfGetDB( DB_SLAVE );
  64         extract( $dbr->tableNames( 'recentchanges', 'watchlist' ) );
  65
  66
  67         # 10 seconds server-side caching max
  68         $wgOut->setSquidMaxage( 10 );
  69
  70         # Get last modified date, for client caching
  71         # Don't use this if we are using the patrol feature, patrol changes don't update the timestamp
  72         $lastmod = $dbr->selectField( 'recentchanges', 'MAX(rc_timestamp)', false, $fname );
  73         if ( $feedFormat || !$wgUseRCPatrol ) {
  74                 if( $lastmod && $wgOut->checkLastModified( $lastmod ) ){
  75                         # Client cache fresh and headers sent, nothing more to do.
  76                         return;
  77                 }
  78         }
  79
  80         # Output header
  81         $rctext = wfMsg( "recentchangestext" );
  82         $wgOut->addWikiText( $rctext );
  83
  84
  85         $now = wfTimestampNow();
  86         $cutoff_unixtime = time() - ( $days * 86400 );
  87         $cutoff_unixtime = $cutoff_unixtime - ($cutoff_unixtime % 86400);
  88         $cutoff = $dbr->timestamp( $cutoff_unixtime );
  89         if(preg_match('/^[0-9]{14}$/', $from) and $from > wfTimestamp(TS_MW,$cutoff)) {
  90                 $cutoff = $dbr->timestamp($from);
  91         } else {
  92                 unset($from);
  93         }
  94
  95         $sk = $wgUser->getSkin();
  96
  97         $showhide = array( wfMsg( 'show' ), wfMsg( 'hide' ));
  98
  99         $hidem  = ( $hideminor )    ? 'AND rc_minor=0' : '';
 100         $hidem .= ( $hidebots )     ? ' AND rc_bot=0' : '';
 101         $hidem .= ( $hideliu )      ? ' AND rc_user=0' : '';
 102         $hidem .= ( $hidepatrolled )? ' AND rc_patrolled=0' : '';
 103
 104         $urlparams = array( 'hideminor' => $hideminor,  'hideliu'       => $hideliu,
 105                             'hidebots'  => $hidebots,   'hidepatrolled' => $hidepatrolled,
 106                             'limit'     => $limit );
 107         $hideparams = wfArrayToCGI( $urlparams );
 108
 109         $minorLink = $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 110           $showhide[1-$hideminor], wfArrayToCGI( array( 'hideminor' => 1-$hideminor ), $urlparams ) );
 111         $botLink = $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 112           $showhide[1-$hidebots], wfArrayToCGI( array( 'hidebots' => 1-$hidebots ), $urlparams ) );
 113         $liuLink = $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 114           $showhide[1-$hideliu], wfArrayToCGI( array( 'hideliu' => 1-$hideliu ), $urlparams ) );
 115         $patrLink = $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 116           $showhide[1-$hidepatrolled], wfArrayToCGI( array( 'hidepatrolled' => 1-$hidepatrolled ), $urlparams ) );
 117
 118         $uid = $wgUser->getID();
 119         $sql2 = "SELECT $recentchanges.*" . ($uid ? ",wl_user" : "") . " FROM $recentchanges " .
 120           ($uid ? "LEFT OUTER JOIN $watchlist ON wl_user={$uid} AND wl_title=rc_title AND wl_namespace=rc_namespace & 65534 " : "") .
 121           "WHERE rc_timestamp > '{$cutoff}' {$hidem} " .
 122           "ORDER BY rc_timestamp DESC LIMIT {$limit}";
 123
 124         $res = $dbr->query( $sql2, DB_SLAVE, $fname );
 125         $rows = array();
 126         while( $row = $dbr->fetchObject( $res ) ){
 127                 $rows[] = $row;
 128         }
 129         $dbr->freeResult( $res );
 130
 131         if(isset($from)) {
 132                 $note = wfMsg( 'rcnotefrom', $wgLang->formatNum( $limit ),
 133                         $wgLang->timeanddate( $from, true ) );
 134         } else {
 135                 $note = wfMsg( 'rcnote', $wgLang->formatNum( $limit ), $wgLang->formatNum( $days ) );
 136         }
 137         $wgOut->addHTML( "\n<hr />\n{$note}\n<br />" );
 138
 139         $note = rcDayLimitLinks( $days, $limit, 'Recentchanges', $hideparams, false, $minorLink, $botLink, $liuLink, $patrLink );
 140
 141         $note .= "<br />\n" . wfMsg( 'rclistfrom',
 142           $sk->makeKnownLink( $wgContLang->specialPage( 'Recentchanges' ),
 143           $wgLang->timeanddate( $now, true ), $hideparams.'&from='.$now ) );
 144
 145         $wgOut->addHTML( $note."\n" );
 146
 147         if( $feedFormat ) {
 148                 rcOutputFeed( $rows, $feedFormat, $limit, $hideminor, $lastmod );
 149         } else {
 150                 # Web output...
 151                 $wgOut->setSyndicated( true );
 152                 $list =& new ChangesList( $sk );
 153                 $s = $list->beginRecentChangesList();
 154                 $counter = 1;
 155                 foreach( $rows as $obj ){
 156                         if( $limit == 0) {
 157                                 break;
 158                         }
 159
 160                         if ( ! ( $hideminor     && $obj->rc_minor     ) &&
 161                              ! ( $hidepatrolled && $obj->rc_patrolled ) ) {
 162                                 $rc = RecentChange::newFromRow( $obj );
 163                                 $rc->counter = $counter++;
 164                                 $s .= $list->recentChangesLine( $rc, !empty( $obj->wl_user ) );
 165                                 --$limit;
 166                         }
 167                 }
 168                 $s .= $list->endRecentChangesList();
 169                 $wgOut->addHTML( $s );
 170         }
 171 }
 172
 173 function rcOutputFeed( $rows, $feedFormat, $limit, $hideminor, $lastmod ) {
 174         global $messageMemc, $wgDBname, $wgFeedCacheTimeout;
 175         global $wgFeedClasses, $wgTitle, $wgSitename, $wgContLanguageCode;
 176
 177         if( !isset( $wgFeedClasses[$feedFormat] ) ) {
 178                 wfHttpError( 500, "Internal Server Error", "Unsupported feed type." );
 179                 return false;
 180         }
 181
 182         $timekey = "$wgDBname:rcfeed:timestamp";
 183         $key = "$wgDBname:rcfeed:$feedFormat:limit:$limit:minor:$hideminor";
 184
 185         $feedTitle = $wgSitename . ' - ' . wfMsgForContent( 'recentchanges' ) .
 186                 ' [' . $wgContLanguageCode . ']';
 187         $feed = new $wgFeedClasses[$feedFormat](
 188                 $feedTitle,
 189                 htmlspecialchars( wfMsgForContent( 'recentchangestext' ) ),
 190                 $wgTitle->getFullUrl() );
 191
 192         /**
 193          * Bumping around loading up diffs can be pretty slow, so where
 194          * possible we want to cache the feed output so the next visitor
 195          * gets it quick too.
 196          */
 197         $cachedFeed = false;
 198         if( $feedLastmod = $messageMemc->get( $timekey ) ) {
 199                 /**
 200                  * If the cached feed was rendered very recently, we may
 201                  * go ahead and use it even if there have been edits made
 202                  * since it was rendered. This keeps a swarm of requests
 203                  * from being too bad on a super-frequently edited wiki.
 204                  */
 205                 if( time() - wfTimestamp( TS_UNIX, $feedLastmod )
 206                                 < $wgFeedCacheTimeout
 207                         || wfTimestamp( TS_UNIX, $feedLastmod )
 208                                 > wfTimestamp( TS_UNIX, $lastmod ) ) {
 209                         wfDebug( "RC: loading feed from cache ($key; $feedLastmod; $lastmod)...\n" );
 210                         $cachedFeed = $messageMemc->get( $key );
 211                 } else {
 212                         wfDebug( "RC: cached feed timestamp check failed ($feedLastmod; $lastmod)\n" );
 213                 }
 214         }
 215         if( is_string( $cachedFeed ) ) {
 216                 wfDebug( "RC: Outputting cached feed\n" );
 217                 $feed->httpHeaders();
 218                 echo $cachedFeed;
 219         } else {
 220                 wfDebug( "RC: rendering new feed and caching it\n" );
 221                 ob_start();
 222                 rcDoOutputFeed( $rows, $feed );
 223                 $cachedFeed = ob_get_contents();
 224                 ob_end_flush();
 225
 226                 $expire = 3600 * 24; # One day
 227                 $messageMemc->set( $key, $cachedFeed );
 228                 $messageMemc->set( $timekey, wfTimestamp( TS_MW ), $expire );
 229         }
 230         return true;
 231 }
 232
 233 function rcDoOutputFeed( $rows, &$feed ) {
 234         global $wgSitename, $wgFeedClasses, $wgContLanguageCode;
 235
 236         $feed->outHeader();
 237
 238         # Merge adjacent edits by one user
 239         $sorted = array();
 240         $n = 0;
 241         foreach( $rows as $obj ) {
 242                 if( $n > 0 &&
 243                         $obj->rc_namespace >= 0 &&
 244                         $obj->rc_cur_id == $sorted[$n-1]->rc_cur_id &&
 245                         $obj->rc_user_text == $sorted[$n-1]->rc_user_text ) {
 246                         $sorted[$n-1]->rc_last_oldid = $obj->rc_last_oldid;
 247                 } else {
 248                         $sorted[$n] = $obj;
 249                         $n++;
 250                 }
 251                 $first = false;
 252         }
 253
 254         foreach( $sorted as $obj ) {
 255                 $title = Title::makeTitle( $obj->rc_namespace, $obj->rc_title );
 256                 $talkpage = $title->getTalkPage();
 257                 $item = new FeedItem(
 258                         $title->getPrefixedText(),
 259                         rcFormatDiff( $obj ),
 260                         $title->getFullURL(),
 261                         $obj->rc_timestamp,
 262                         $obj->rc_user_text,
 263                         $talkpage->getFullURL()
 264                         );
 265                 $feed->outItem( $item );
 266         }
 267         $feed->outFooter();
 268 }
 269
 270 /**
 271  *
 272  */
 273 function rcCountLink( $lim, $d, $page='Recentchanges', $more='' ) {
 274         global $wgUser, $wgLang, $wgContLang;
 275         $sk = $wgUser->getSkin();
 276         $s = $sk->makeKnownLink( $wgContLang->specialPage( $page ),
 277           ($lim ? $wgLang->formatNum( "{$lim}" ) : wfMsg( 'all' ) ), "{$more}" .
 278           ($d ? "days={$d}&" : '') . 'limit='.$lim );
 279         return $s;
 280 }
 281
 282 /**
 283  *
 284  */
 285 function rcDaysLink( $lim, $d, $page='Recentchanges', $more='' ) {
 286         global $wgUser, $wgLang, $wgContLang;
 287         $sk = $wgUser->getSkin();
 288         $s = $sk->makeKnownLink( $wgContLang->specialPage( $page ),
 289           ($d ? $wgLang->formatNum( "{$d}" ) : wfMsg( "all" ) ), $more.'days='.$d .
 290           ($lim ? '&limit='.$lim : '') );
 291         return $s;
 292 }
 293
 294 /**
 295  * Used also by Recentchangeslinked
 296  */
 297 function rcDayLimitLinks( $days, $limit, $page='Recentchanges', $more='', $doall = false, $minorLink = '',
 298         $botLink = '', $liuLink = '', $patrLink = '' ) {
 299         if ($more != '') $more .= '&';
 300         $cl = rcCountLink( 50, $days, $page, $more ) . ' | ' .
 301           rcCountLink( 100, $days, $page, $more  ) . ' | ' .
 302           rcCountLink( 250, $days, $page, $more  ) . ' | ' .
 303           rcCountLink( 500, $days, $page, $more  ) .
 304           ( $doall ? ( ' | ' . rcCountLink( 0, $days, $page, $more ) ) : '' );
 305         $dl = rcDaysLink( $limit, 1, $page, $more  ) . ' | ' .
 306           rcDaysLink( $limit, 3, $page, $more  ) . ' | ' .
 307           rcDaysLink( $limit, 7, $page, $more  ) . ' | ' .
 308           rcDaysLink( $limit, 14, $page, $more  ) . ' | ' .
 309           rcDaysLink( $limit, 30, $page, $more  ) .
 310           ( $doall ? ( ' | ' . rcDaysLink( $limit, 0, $page, $more ) ) : '' );
 311         $shm = wfMsg( 'showhideminor', $minorLink, $botLink, $liuLink, $patrLink );
 312         $note = wfMsg( 'rclinks', $cl, $dl, $shm );
 313         return $note;
 314 }
 315
 316 /**
 317  * Format a diff for the newsfeed
 318  */
 319 function rcFormatDiff( $row ) {
 320         $fname = 'rcFormatDiff';
 321         wfProfileIn( $fname );
 322
 323         require_once( 'DifferenceEngine.php' );
 324         $comment = "<p>" . htmlspecialchars( $row->rc_comment ) . "</p>\n";
 325
 326         if( $row->rc_namespace >= 0 ) {
 327                 global $wgContLang;
 328
 329                 #$diff =& new DifferenceEngine( $row->rc_this_oldid, $row->rc_last_oldid, $row->rc_id );
 330                 #$diff->showDiffPage();
 331
 332                 $dbr =& wfGetDB( DB_SLAVE );
 333                 if( $row->rc_this_oldid ) {
 334                         $newrow = $dbr->selectRow( 'old',
 335                                 array( 'old_flags', 'old_text' ),
 336                                 array( 'old_id' => $row->rc_this_oldid ) );
 337                         $newtext = Article::getRevisionText( $newrow );
 338                 } else {
 339                         $newrow = $dbr->selectRow( 'cur',
 340                                 array( 'cur_text' ),
 341                                 array( 'cur_id' => $row->rc_cur_id ) );
 342                         $newtext = $newrow->cur_text;
 343                 }
 344                 if( $row->rc_last_oldid ) {
 345                         wfProfileIn( "$fname-dodiff" );
 346                         $oldrow = $dbr->selectRow( 'old',
 347                                 array( 'old_flags', 'old_text' ),
 348                                 array( 'old_id' => $row->rc_last_oldid ) );
 349                         $oldtext = Article::getRevisionText( $oldrow );
 350
 351                         global $wgFeedDiffCutoff;
 352                         if( strlen( $newtext ) > $wgFeedDiffCutoff ||
 353                             strlen( $oldtext ) > $wgFeedDiffCutoff ) {
 354                             $titleObj = Title::makeTitle( $row->rc_namespace, $row->rc_title );
 355                                 $diffLink = $titleObj->escapeFullUrl(
 356                                         'diff=' . $row->rc_this_oldid .
 357                                         '&oldid=' . $row->rc_last_oldid );
 358                             $diffText = '<a href="' .
 359                                 $diffLink .
 360                                 '">' .
 361                                 htmlspecialchars( wfMsgForContent( 'difference' ) ) .
 362                                 '</a>';
 363                         } else {
 364                                 $diffText = DifferenceEngine::getDiff( $oldtext, $newtext,
 365                                   wfMsg( 'revisionasof', $wgContLang->timeanddate( $row->rc_timestamp ) ),
 366                                   wfMsg( 'currentrev' ) );
 367                         }
 368                         wfProfileOut( "$fname-dodiff" );
 369                 } else {
 370                         $diffText = '<p><b>' . wfMsg( 'newpage' ) . '</b></p>' .
 371                                 '<div>' . nl2br( htmlspecialchars( $newtext ) ) . '</div>';
 372                 }
 373
 374                 wfProfileOut( $fname );
 375                 return $comment . $diffText;
 376         }
 377
 378         wfProfileOut( $fname );
 379         return $comment;
 380 }
 381
 382 ?>