includes/RecentChange.php

   1 <?php
   2
   3 /**
   4  * Utility class for creating new RC entries
   5  * mAttribs:
   6  *      rc_id           id of the row in the recentchanges table
   7  *      rc_timestamp    time the entry was made
   8  *      rc_cur_time     timestamp on the cur row
   9  *      rc_namespace    namespace #
  10  *      rc_title        non-prefixed db key
  11  *      rc_type         is new entry, used to determine whether updating is necessary
  12  *      rc_minor        is minor
  13  *      rc_cur_id       page_id of associated page entry
  14  *      rc_user         user id who made the entry
  15  *      rc_user_text    user name who made the entry
  16  *      rc_comment      edit summary
  17  *      rc_this_oldid   rev_id associated with this entry (or zero)
  18  *      rc_last_oldid   rev_id associated with the entry before this one (or zero)
  19  *      rc_bot          is bot, hidden
  20  *      rc_ip           IP address of the user in dotted quad notation
  21  *      rc_new          obsolete, use rc_type==RC_NEW
  22  *      rc_patrolled    boolean whether or not someone has marked this edit as patrolled
  23  *      rc_old_len      integer byte length of the text before the edit
  24  *      rc_new_len      the same after the edit
  25   *     rc_deleted              partial deletion
  26  *      rc_logid                the log_id value for this log entry (or zero)
  27  *  rc_log_type         the log type (or null)
  28  *      rc_log_action   the log action (or null)
  29  *  rc_params           log params
  30  *
  31  * mExtra:
  32  *      prefixedDBkey   prefixed db key, used by external app via msg queue
  33  *      lastTimestamp   timestamp of previous entry, used in WHERE clause during update
  34  *      lang            the interwiki prefix, automatically set in save()
  35  *  oldSize         text size before the change
  36  *  newSize         text size after the change
  37  *
  38  * temporary:           not stored in the database
  39  *      notificationtimestamp
  40  *      numberofWatchingusers
  41  *
  42  * @todo document functions and variables
  43  */
  44 class RecentChange
  45 {
  46         var $mAttribs = array(), $mExtra = array();
  47         var $mTitle = false, $mMovedToTitle = false;
  48         var $numberofWatchingusers = 0 ; # Dummy to prevent error message in SpecialRecentchangeslinked
  49
  50         # Factory methods
  51
  52         public static function newFromRow( $row )
  53         {
  54                 $rc = new RecentChange;
  55                 $rc->loadFromRow( $row );
  56                 return $rc;
  57         }
  58
  59         public static function newFromCurRow( $row )
  60         {
  61                 $rc = new RecentChange;
  62                 $rc->loadFromCurRow( $row );
  63                 $rc->notificationtimestamp = false;
  64                 $rc->numberofWatchingusers = false;
  65                 return $rc;
  66         }
  67
  68         /**
  69          * Obtain the recent change with a given rc_id value
  70          *
  71          * @param $rcid rc_id value to retrieve
  72          * @return RecentChange
  73          */
  74         public static function newFromId( $rcid ) {
  75                 $dbr = wfGetDB( DB_SLAVE );
  76                 $res = $dbr->select( 'recentchanges', '*', array( 'rc_id' => $rcid ), __METHOD__ );
  77                 if( $res && $dbr->numRows( $res ) > 0 ) {
  78                         $row = $dbr->fetchObject( $res );
  79                         $dbr->freeResult( $res );
  80                         return self::newFromRow( $row );
  81                 } else {
  82                         return NULL;
  83                 }
  84         }
  85
  86         /**
  87          * Find the first recent change matching some specific conditions
  88          *
  89          * @param array $conds Array of conditions
  90          * @param mixed $fname Override the method name in profiling/logs
  91          * @return RecentChange
  92          */
  93         public static function newFromConds( $conds, $fname = false ) {
  94                 if( $fname === false )
  95                         $fname = __METHOD__;
  96                 $dbr = wfGetDB( DB_SLAVE );
  97                 $res = $dbr->select(
  98                         'recentchanges',
  99                         '*',
 100                         $conds,
 101                         $fname
 102                 );
 103                 if( $res instanceof ResultWrapper && $res->numRows() > 0 ) {
 104                         $row = $res->fetchObject();
 105                         $res->free();
 106                         return self::newFromRow( $row );
 107                 }
 108                 return null;
 109         }
 110
 111         # Accessors
 112
 113         function setAttribs( $attribs )
 114         {
 115                 $this->mAttribs = $attribs;
 116         }
 117
 118         function setExtra( $extra )
 119         {
 120                 $this->mExtra = $extra;
 121         }
 122
 123         function &getTitle()
 124         {
 125                 if ( $this->mTitle === false ) {
 126                         $this->mTitle = Title::makeTitle( $this->mAttribs['rc_namespace'], $this->mAttribs['rc_title'] );
 127                 }
 128                 return $this->mTitle;
 129         }
 130
 131         function getMovedToTitle()
 132         {
 133                 if ( $this->mMovedToTitle === false ) {
 134                         $this->mMovedToTitle = Title::makeTitle( $this->mAttribs['rc_moved_to_ns'],
 135                                 $this->mAttribs['rc_moved_to_title'] );
 136                 }
 137                 return $this->mMovedToTitle;
 138         }
 139
 140         # Writes the data in this object to the database
 141         function save()
 142         {
 143                 global $wgLocalInterwiki, $wgPutIPinRC, $wgRC2UDPAddress, $wgRC2UDPPrefix, $wgRC2UDPOmitBots;
 144                 $fname = 'RecentChange::save';
 145
 146                 $dbw = wfGetDB( DB_MASTER );
 147                 if ( !is_array($this->mExtra) ) {
 148                         $this->mExtra = array();
 149                 }
 150                 $this->mExtra['lang'] = $wgLocalInterwiki;
 151
 152                 if ( !$wgPutIPinRC ) {
 153                         $this->mAttribs['rc_ip'] = '';
 154                 }
 155
 156                 # If our database is strict about IP addresses, use NULL instead of an empty string
 157                 if ( $dbw->strictIPs() and $this->mAttribs['rc_ip'] == '' ) {
 158                         unset( $this->mAttribs['rc_ip'] );
 159                 }
 160
 161                 # Fixup database timestamps
 162                 $this->mAttribs['rc_timestamp'] = $dbw->timestamp($this->mAttribs['rc_timestamp']);
 163                 $this->mAttribs['rc_cur_time'] = $dbw->timestamp($this->mAttribs['rc_cur_time']);
 164                 $this->mAttribs['rc_id'] = $dbw->nextSequenceValue( 'rc_rc_id_seq' );
 165
 166                 ## If we are using foreign keys, an entry of 0 for the page_id will fail, so use NULL
 167                 if ( $dbw->cascadingDeletes() and $this->mAttribs['rc_cur_id']==0 ) {
 168                         unset ( $this->mAttribs['rc_cur_id'] );
 169                 }
 170
 171                 # Insert new row
 172                 $dbw->insert( 'recentchanges', $this->mAttribs, $fname );
 173
 174                 # Set the ID
 175                 $this->mAttribs['rc_id'] = $dbw->insertId();
 176
 177                 # Notify external application via UDP
 178                 if ( $wgRC2UDPAddress && ( !$this->mAttribs['rc_bot'] || !$wgRC2UDPOmitBots ) ) {
 179                         self::sendToUDP( $wgRC2UDPPrefix, $this->getIRCLine() );
 180                 }
 181
 182                 # E-mail notifications
 183                 global $wgUseEnotif, $wgShowUpdatedMarker, $wgUser;
 184                 if( $wgUseEnotif || $wgShowUpdatedMarker ) {
 185                         // Users
 186                         if( $this->mAttribs['rc_user'] ) {
 187                                 $editor = ($wgUser->getId() == $this->mAttribs['rc_user']) ?
 188                                         $wgUser : User::newFromID( $this->mAttribs['rc_user'] );
 189                         // Anons
 190                         } else {
 191                                 $editor = ($wgUser->getName() == $this->mAttribs['rc_user_text']) ?
 192                                         $wgUser : User::newFromName( $this->mAttribs['rc_user_text'], false );
 193                         }
 194                         # FIXME: this would be better as an extension hook
 195                         $enotif = new EmailNotification();
 196                         $title = Title::makeTitle( $this->mAttribs['rc_namespace'], $this->mAttribs['rc_title'] );
 197                         $enotif->notifyOnPageChange( $editor, $title,
 198                                 $this->mAttribs['rc_timestamp'],
 199                                 $this->mAttribs['rc_comment'],
 200                                 $this->mAttribs['rc_minor'],
 201                                 $this->mAttribs['rc_last_oldid'] );
 202                 }
 203
 204                 # Notify extensions
 205                 wfRunHooks( 'RecentChange_save', array( &$this ) );
 206         }
 207
 208         /**
 209          * Send some text to UDP
 210          * @param string $line
 211          * @return bool success
 212          */
 213         public static function sendToUDP( $prefix, $line ) {
 214                 global $wgRC2UDPAddress, $wgRC2UDPPort;
 215                 # Notify external application via UDP
 216                 if( $wgRC2UDPAddress ) {
 217                         $conn = socket_create( AF_INET, SOCK_DGRAM, SOL_UDP );
 218                         if( $conn ) {
 219                                 $line = $prefix . $line;
 220                                 socket_sendto( $conn, $line, strlen($line), 0, $wgRC2UDPAddress, $wgRC2UDPPort );
 221                                 socket_close( $conn );
 222                                 return true;
 223                         }
 224                 }
 225                 return false;
 226         }
 227
 228         /**
 229          * Remove newlines and carriage returns
 230          * @param string $line
 231          * @return string
 232          */
 233         public static function cleanupForIRC( $text ) {
 234                 return str_replace(array("\n", "\r"), array("", ""), $text);
 235         }
 236
 237         /**
 238          * Mark a given change as patrolled
 239          *
 240          * @param mixed $change RecentChange or corresponding rc_id
 241          * @param bool $auto for automatic patrol
 242          * @return See doMarkPatrolled(), or null if $change is not an existing rc_id
 243          */
 244         public static function markPatrolled( $change, $auto = false ) {
 245                 $change = $change instanceof RecentChange
 246                         ? $change
 247                         : RecentChange::newFromId($change);
 248                 if( !$change instanceof RecentChange ) {
 249                         return null;
 250                 }
 251                 return $change->doMarkPatrolled( $auto );
 252         }
 253
 254         /**
 255          * Mark this RecentChange as patrolled
 256          *
 257          * NOTE: Can also return 'rcpatroldisabled', 'hookaborted' and 'markedaspatrollederror-noautopatrol' as errors
 258          * @param bool $auto for automatic patrol
 259          * @return array of permissions errors, see Title::getUserPermissionsErrors()
 260          */
 261         public function doMarkPatrolled( $auto = false ) {
 262                 global $wgUser, $wgUseRCPatrol, $wgUseNPPatrol;
 263                 $errors = array();
 264                 // If recentchanges patrol is disabled, only new pages
 265                 // can be patrolled
 266                 if ( !$wgUseRCPatrol
 267                         && ( !$wgUseNPPatrol || $this->getAttribute( 'rc_type' ) != RC_NEW ) )
 268                 {
 269                         $errors[] = array('rcpatroldisabled');
 270                 }
 271
 272                 // Automatic patrol needs "autopatrol", ordinary patrol needs "patrol"
 273                 $right = $auto ? 'autopatrol' : 'patrol';
 274                 $errors = array_merge( $errors, $this->getTitle()->getUserPermissionsErrors( $right, $wgUser ) );
 275                 if( !wfRunHooks('MarkPatrolled', array($this->getAttribute('rc_id'), &$wgUser, false)) )
 276                         $errors[] = array('hookaborted');
 277
 278                 // Users without the 'autopatrol' right can't patrol their
 279                 // own revisions
 280                 if( $wgUser->getName() == $this->getAttribute('rc_user_text') && !$wgUser->isAllowed('autopatrol') )
 281                         $errors[] = array('markedaspatrollederror-noautopatrol');
 282
 283                 if( $errors ) {
 284                         return $errors;
 285                 }
 286
 287                 // If the change was patrolled already, do nothing
 288                 if( $this->getAttribute('rc_patrolled') )
 289                         return array();
 290
 291                 // Actually set the 'patrolled' flag in RC
 292                 $this->reallyMarkPatrolled();
 293
 294                 // Log this patrol event
 295                 PatrolLog::record( $this, $auto );
 296                 wfRunHooks( 'MarkPatrolledComplete', array($this->getAttribute('rc_id'), &$wgUser, false) );
 297                 return array();
 298         }
 299
 300         /**
 301          * Mark this RecentChange patrolled, without error checking
 302          * @return int Number of affected rows
 303          */
 304         public function reallyMarkPatrolled() {
 305                 $dbw = wfGetDB( DB_MASTER );
 306                 $dbw->update(
 307                         'recentchanges',
 308                         array(
 309                                 'rc_patrolled' => 1
 310                         ),
 311                         array(
 312                                 'rc_id' => $this->getAttribute('rc_id')
 313                         ),
 314                         __METHOD__
 315                 );
 316                 return $dbw->affectedRows();
 317         }
 318
 319         # Makes an entry in the database corresponding to an edit
 320         public static function notifyEdit( $timestamp, &$title, $minor, &$user, $comment,
 321                 $oldId, $lastTimestamp, $bot, $ip = '', $oldSize = 0, $newSize = 0, $newId = 0)
 322         {
 323                 if ( !$ip ) {
 324                         $ip = wfGetIP();
 325                         if ( !$ip ) {
 326                                 $ip = '';
 327                         }
 328                 }
 329
 330                 $rc = new RecentChange;
 331                 $rc->mAttribs = array(
 332                         'rc_timestamp'  => $timestamp,
 333                         'rc_cur_time'   => $timestamp,
 334                         'rc_namespace'  => $title->getNamespace(),
 335                         'rc_title'      => $title->getDBkey(),
 336                         'rc_type'       => RC_EDIT,
 337                         'rc_minor'      => $minor ? 1 : 0,
 338                         'rc_cur_id'     => $title->getArticleID(),
 339                         'rc_user'       => $user->getId(),
 340                         'rc_user_text'  => $user->getName(),
 341                         'rc_comment'    => $comment,
 342                         'rc_this_oldid' => $newId,
 343                         'rc_last_oldid' => $oldId,
 344                         'rc_bot'        => $bot ? 1 : 0,
 345                         'rc_moved_to_ns'        => 0,
 346                         'rc_moved_to_title'     => '',
 347                         'rc_ip'         => $ip,
 348                         'rc_patrolled'  => 0,
 349                         'rc_new'        => 0,  # obsolete
 350                         'rc_old_len'    => $oldSize,
 351                         'rc_new_len'    => $newSize,
 352                         'rc_deleted'    => 0,
 353                         'rc_logid'              => 0,
 354                         'rc_log_type'   => null,
 355                         'rc_log_action' => '',
 356                         'rc_params'             => ''
 357                 );
 358
 359                 $rc->mExtra =  array(
 360                         'prefixedDBkey' => $title->getPrefixedDBkey(),
 361                         'lastTimestamp' => $lastTimestamp,
 362                         'oldSize'       => $oldSize,
 363                         'newSize'       => $newSize,
 364                 );
 365                 $rc->save();
 366                 return $rc;
 367         }
 368
 369         /**
 370          * Makes an entry in the database corresponding to page creation
 371          * Note: the title object must be loaded with the new id using resetArticleID()
 372          * @todo Document parameters and return
 373          */
 374         public static function notifyNew( $timestamp, &$title, $minor, &$user, $comment, $bot,
 375           $ip='', $size = 0, $newId = 0 )
 376         {
 377                 if ( !$ip ) {
 378                         $ip = wfGetIP();
 379                         if ( !$ip ) {
 380                                 $ip = '';
 381                         }
 382                 }
 383
 384                 $rc = new RecentChange;
 385                 $rc->mAttribs = array(
 386                         'rc_timestamp'      => $timestamp,
 387                         'rc_cur_time'       => $timestamp,
 388                         'rc_namespace'      => $title->getNamespace(),
 389                         'rc_title'          => $title->getDBkey(),
 390                         'rc_type'           => RC_NEW,
 391                         'rc_minor'          => $minor ? 1 : 0,
 392                         'rc_cur_id'         => $title->getArticleID(),
 393                         'rc_user'           => $user->getId(),
 394                         'rc_user_text'      => $user->getName(),
 395                         'rc_comment'        => $comment,
 396                         'rc_this_oldid'     => $newId,
 397                         'rc_last_oldid'     => 0,
 398                         'rc_bot'            => $bot ? 1 : 0,
 399                         'rc_moved_to_ns'    => 0,
 400                         'rc_moved_to_title' => '',
 401                         'rc_ip'             => $ip,
 402                         'rc_patrolled'      => 0,
 403                         'rc_new'                => 1, # obsolete
 404                         'rc_old_len'        => 0,
 405                         'rc_new_len'        => $size,
 406                         'rc_deleted'            => 0,
 407                         'rc_logid'                      => 0,
 408                         'rc_log_type'           => null,
 409                         'rc_log_action'         => '',
 410                         'rc_params'                     => ''
 411                 );
 412
 413                 $rc->mExtra =  array(
 414                         'prefixedDBkey' => $title->getPrefixedDBkey(),
 415                         'lastTimestamp' => 0,
 416                         'oldSize' => 0,
 417                         'newSize' => $size
 418                 );
 419                 $rc->save();
 420                 return $rc;
 421         }
 422
 423         # Makes an entry in the database corresponding to a rename
 424         public static function notifyMove( $timestamp, &$oldTitle, &$newTitle, &$user, $comment, $ip='', $overRedir = false )
 425         {
 426                 global $wgRequest;
 427
 428                 if ( !$ip ) {
 429                         $ip = wfGetIP();
 430                         if ( !$ip ) {
 431                                 $ip = '';
 432                         }
 433                 }
 434
 435                 $rc = new RecentChange;
 436                 $rc->mAttribs = array(
 437                         'rc_timestamp'  => $timestamp,
 438                         'rc_cur_time'   => $timestamp,
 439                         'rc_namespace'  => $oldTitle->getNamespace(),
 440                         'rc_title'      => $oldTitle->getDBkey(),
 441                         'rc_type'       => $overRedir ? RC_MOVE_OVER_REDIRECT : RC_MOVE,
 442                         'rc_minor'      => 0,
 443                         'rc_cur_id'     => $oldTitle->getArticleID(),
 444                         'rc_user'       => $user->getId(),
 445                         'rc_user_text'  => $user->getName(),
 446                         'rc_comment'    => $comment,
 447                         'rc_this_oldid' => 0,
 448                         'rc_last_oldid' => 0,
 449                         'rc_bot'        => $user->isAllowed( 'bot' ) ? $wgRequest->getBool( 'bot' , true ) : 0,
 450                         'rc_moved_to_ns'        => $newTitle->getNamespace(),
 451                         'rc_moved_to_title'     => $newTitle->getDBkey(),
 452                         'rc_ip'         => $ip,
 453                         'rc_new'        => 0, # obsolete
 454                         'rc_patrolled'  => 1,
 455                         'rc_old_len'    => NULL,
 456                         'rc_new_len'    => NULL,
 457                         'rc_deleted'    => 0,
 458                         'rc_logid'              => 0, # notifyMove not used anymore
 459                         'rc_log_type'   => null,
 460                         'rc_log_action' => '',
 461                         'rc_params'             => ''
 462                 );
 463
 464                 $rc->mExtra = array(
 465                         'prefixedDBkey' => $oldTitle->getPrefixedDBkey(),
 466                         'lastTimestamp' => 0,
 467                         'prefixedMoveTo'        => $newTitle->getPrefixedDBkey()
 468                 );
 469                 $rc->save();
 470         }
 471
 472         public static function notifyMoveToNew( $timestamp, &$oldTitle, &$newTitle, &$user, $comment, $ip='' ) {
 473                 RecentChange::notifyMove( $timestamp, $oldTitle, $newTitle, $user, $comment, $ip, false );
 474         }
 475
 476         public static function notifyMoveOverRedirect( $timestamp, &$oldTitle, &$newTitle, &$user, $comment, $ip='' ) {
 477                 RecentChange::notifyMove( $timestamp, $oldTitle, $newTitle, $user, $comment, $ip, true );
 478         }
 479
 480         public static function notifyLog( $timestamp, &$title, &$user, $actionComment, $ip='',
 481            $type, $action, $target, $logComment, $params, $newId=0 )
 482         {
 483                 global $wgRequest;
 484
 485                 if ( !$ip ) {
 486                         $ip = wfGetIP();
 487                         if ( !$ip ) {
 488                                 $ip = '';
 489                         }
 490                 }
 491
 492                 $rc = new RecentChange;
 493                 $rc->mAttribs = array(
 494                         'rc_timestamp'  => $timestamp,
 495                         'rc_cur_time'   => $timestamp,
 496                         'rc_namespace'  => $target->getNamespace(),
 497                         'rc_title'      => $target->getDBkey(),
 498                         'rc_type'       => RC_LOG,
 499                         'rc_minor'      => 0,
 500                         'rc_cur_id'     => $target->getArticleID(),
 501                         'rc_user'       => $user->getId(),
 502                         'rc_user_text'  => $user->getName(),
 503                         'rc_comment'    => $logComment,
 504                         'rc_this_oldid' => 0,
 505                         'rc_last_oldid' => 0,
 506                         'rc_bot'        => $user->isAllowed( 'bot' ) ? $wgRequest->getBool( 'bot', true ) : 0,
 507                         'rc_moved_to_ns'        => 0,
 508                         'rc_moved_to_title'     => '',
 509                         'rc_ip' => $ip,
 510                         'rc_patrolled' => 1,
 511                         'rc_new'        => 0, # obsolete
 512                         'rc_old_len'    => NULL,
 513                         'rc_new_len'    => NULL,
 514                         'rc_deleted'    => 0,
 515                         'rc_logid'              => $newId,
 516                         'rc_log_type'   => $type,
 517                         'rc_log_action' => $action,
 518                         'rc_params'             => $params
 519                 );
 520                 $rc->mExtra =  array(
 521                         'prefixedDBkey' => $title->getPrefixedDBkey(),
 522                         'lastTimestamp' => 0,
 523                         'actionComment' => $actionComment, // the comment appended to the action, passed from LogPage
 524                 );
 525                 $rc->save();
 526         }
 527
 528         # Initialises the members of this object from a mysql row object
 529         function loadFromRow( $row )
 530         {
 531                 $this->mAttribs = get_object_vars( $row );
 532                 $this->mAttribs["rc_timestamp"] = wfTimestamp(TS_MW, $this->mAttribs["rc_timestamp"]);
 533                 $this->mExtra = array();
 534         }
 535
 536         # Makes a pseudo-RC entry from a cur row
 537         function loadFromCurRow( $row )
 538         {
 539                 $this->mAttribs = array(
 540                         'rc_timestamp' => wfTimestamp(TS_MW, $row->rev_timestamp),
 541                         'rc_cur_time' => $row->rev_timestamp,
 542                         'rc_user' => $row->rev_user,
 543                         'rc_user_text' => $row->rev_user_text,
 544                         'rc_namespace' => $row->page_namespace,
 545                         'rc_title' => $row->page_title,
 546                         'rc_comment' => $row->rev_comment,
 547                         'rc_minor' => $row->rev_minor_edit ? 1 : 0,
 548                         'rc_type' => $row->page_is_new ? RC_NEW : RC_EDIT,
 549                         'rc_cur_id' => $row->page_id,
 550                         'rc_this_oldid' => $row->rev_id,
 551                         'rc_last_oldid' => isset($row->rc_last_oldid) ? $row->rc_last_oldid : 0,
 552                         'rc_bot'        => 0,
 553                         'rc_moved_to_ns'        => 0,
 554                         'rc_moved_to_title'     => '',
 555                         'rc_ip' => '',
 556                         'rc_id' => $row->rc_id,
 557                         'rc_patrolled' => $row->rc_patrolled,
 558                         'rc_new' => $row->page_is_new, # obsolete
 559                         'rc_old_len' => $row->rc_old_len,
 560                         'rc_new_len' => $row->rc_new_len,
 561                         'rc_params' => isset($row->rc_params) ? $row->rc_params : '',
 562                         'rc_log_type' => isset($row->rc_log_type) ? $row->rc_log_type : null,
 563                         'rc_log_action' => isset($row->rc_log_action) ? $row->rc_log_action : null,
 564                         'rc_log_id' => isset($row->rc_log_id) ? $row->rc_log_id: 0,
 565                         // this one REALLY should be set...
 566                         'rc_deleted' => isset($row->rc_deleted) ? $row->rc_deleted: 0,
 567                 );
 568
 569                 $this->mExtra = array();
 570         }
 571
 572         /**
 573          * Get an attribute value
 574          *
 575          * @param $name Attribute name
 576          * @return mixed
 577          */
 578         public function getAttribute( $name ) {
 579                 return isset( $this->mAttribs[$name] ) ? $this->mAttribs[$name] : NULL;
 580         }
 581
 582         /**
 583          * Gets the end part of the diff URL associated with this object
 584          * Blank if no diff link should be displayed
 585          */
 586         function diffLinkTrail( $forceCur )
 587         {
 588                 if ( $this->mAttribs['rc_type'] == RC_EDIT ) {
 589                         $trail = "curid=" . (int)($this->mAttribs['rc_cur_id']) .
 590                                 "&oldid=" . (int)($this->mAttribs['rc_last_oldid']);
 591                         if ( $forceCur ) {
 592                                 $trail .= '&diff=0' ;
 593                         } else {
 594                                 $trail .= '&diff=' . (int)($this->mAttribs['rc_this_oldid']);
 595                         }
 596                 } else {
 597                         $trail = '';
 598                 }
 599                 return $trail;
 600         }
 601
 602         function getIRCLine() {
 603                 global $wgUseRCPatrol;
 604
 605                 // FIXME: Would be good to replace these 2 extract() calls with something more explicit
 606                 // e.g. list ($rc_type, $rc_id) = array_values ($this->mAttribs); [or something like that]
 607                 extract($this->mAttribs);
 608                 extract($this->mExtra);
 609
 610                 if ( $rc_type == RC_LOG ) {
 611                         $titleObj = Title::newFromText( "Log/$rc_log_type", NS_SPECIAL );
 612                 } else {
 613                         $titleObj =& $this->getTitle();
 614                 }
 615                 $title = $titleObj->getPrefixedText();
 616                 $title = self::cleanupForIRC( $title );
 617
 618                 // FIXME: *HACK* these should be getFullURL(), hacked for SSL madness --brion 2005-12-26
 619                 if ( $rc_type == RC_LOG ) {
 620                         $url = '';
 621                 } elseif ( $rc_new && $wgUseRCPatrol ) {
 622                         $url = $titleObj->getInternalURL("rcid=$rc_id");
 623                 } else if ( $rc_new ) {
 624                         $url = $titleObj->getInternalURL();
 625                 } else if ( $wgUseRCPatrol ) {
 626                         $url = $titleObj->getInternalURL("diff=$rc_this_oldid&oldid=$rc_last_oldid&rcid=$rc_id");
 627                 } else {
 628                         $url = $titleObj->getInternalURL("diff=$rc_this_oldid&oldid=$rc_last_oldid");
 629                 }
 630
 631                 if ( isset( $oldSize ) && isset( $newSize ) ) {
 632                         $szdiff = $newSize - $oldSize;
 633                         if ($szdiff < -500) {
 634                                 $szdiff = "\002$szdiff\002";
 635                         } elseif ($szdiff >= 0) {
 636                                 $szdiff = '+' . $szdiff ;
 637                         }
 638                         $szdiff = '(' . $szdiff . ')' ;
 639                 } else {
 640                         $szdiff = '';
 641                 }
 642
 643                 $user = self::cleanupForIRC( $rc_user_text );
 644
 645                 if ( $rc_type == RC_LOG ) {
 646                         $targetText = $this->getTitle()->getPrefixedText();
 647                         $comment = self::cleanupForIRC( str_replace("[[$targetText]]","[[\00302$targetText\00310]]",$actionComment) );
 648                         $flag = $rc_log_action;
 649                 } else {
 650                         $comment = self::cleanupForIRC( $rc_comment );
 651                         $flag = ($rc_new ? "N" : "") . ($rc_minor ? "M" : "") . ($rc_bot ? "B" : "");
 652                 }
 653                 # see http://www.irssi.org/documentation/formats for some colour codes. prefix is \003,
 654                 # no colour (\003) switches back to the term default
 655                 $fullString = "\00314[[\00307$title\00314]]\0034 $flag\00310 " .
 656                               "\00302$url\003 \0035*\003 \00303$user\003 \0035*\003 $szdiff \00310$comment\003\n";
 657                 return $fullString;
 658         }
 659
 660         /**
 661          * Returns the change size (HTML).
 662          * The lengths can be given optionally.
 663          */
 664         function getCharacterDifference( $old = 0, $new = 0 ) {
 665                 global $wgRCChangedSizeThreshold, $wgLang;
 666
 667                 if( $old === 0 ) {
 668                         $old = $this->mAttribs['rc_old_len'];
 669                 }
 670                 if( $new === 0 ) {
 671                         $new = $this->mAttribs['rc_new_len'];
 672                 }
 673
 674                 if( $old === NULL || $new === NULL ) {
 675                         return '';
 676                 }
 677
 678                 $szdiff = $new - $old;
 679                 $formatedSize = wfMsgExt( 'rc-change-size', array( 'parsemag', 'escape'),
 680                         $wgLang->formatNum($szdiff) );
 681
 682                 if( $szdiff < $wgRCChangedSizeThreshold ) {
 683                         return '<strong class=\'mw-plusminus-neg\'>(' . $formatedSize . ')</strong>';
 684                 } elseif( $szdiff === 0 ) {
 685                         return '<span class=\'mw-plusminus-null\'>(' . $formatedSize . ')</span>';
 686                 } elseif( $szdiff > 0 ) {
 687                         return '<span class=\'mw-plusminus-pos\'>(+' . $formatedSize . ')</span>';
 688                 } else {
 689                         return '<span class=\'mw-plusminus-neg\'>(' . $formatedSize . ')</span>';
 690                 }
 691         }
 692 }