includes/RecentChange.php

   1 <?php
   2 /**
   3  * Utility class for creating and accessing recent change entries.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  */
  22
  23 /**
  24  * Utility class for creating new RC entries
  25  *
  26  * mAttribs:
  27  *  rc_id           id of the row in the recentchanges table
  28  *  rc_timestamp    time the entry was made
  29  *  rc_cur_time     timestamp on the cur row
  30  *  rc_namespace    namespace #
  31  *  rc_title        non-prefixed db key
  32  *  rc_type         is new entry, used to determine whether updating is necessary
  33  *  rc_minor        is minor
  34  *  rc_cur_id       page_id of associated page entry
  35  *  rc_user         user id who made the entry
  36  *  rc_user_text    user name who made the entry
  37  *  rc_comment      edit summary
  38  *  rc_this_oldid   rev_id associated with this entry (or zero)
  39  *  rc_last_oldid   rev_id associated with the entry before this one (or zero)
  40  *  rc_bot          is bot, hidden
  41  *  rc_ip           IP address of the user in dotted quad notation
  42  *  rc_new          obsolete, use rc_type==RC_NEW
  43  *  rc_patrolled    boolean whether or not someone has marked this edit as patrolled
  44  *  rc_old_len      integer byte length of the text before the edit
  45  *  rc_new_len      the same after the edit
  46  *  rc_deleted      partial deletion
  47  *  rc_logid        the log_id value for this log entry (or zero)
  48  *  rc_log_type     the log type (or null)
  49  *  rc_log_action   the log action (or null)
  50  *  rc_params       log params
  51  *
  52  * mExtra:
  53  *  prefixedDBkey   prefixed db key, used by external app via msg queue
  54  *  lastTimestamp   timestamp of previous entry, used in WHERE clause during update
  55  *  lang            the interwiki prefix, automatically set in save()
  56  *  oldSize         text size before the change
  57  *  newSize         text size after the change
  58  *  pageStatus      status of the page: created, deleted, moved, restored, changed
  59  *
  60  * temporary:       not stored in the database
  61  *      notificationtimestamp
  62  *      numberofWatchingusers
  63  *
  64  * @todo document functions and variables
  65  */
  66 class RecentChange {
  67         var $mAttribs = array(), $mExtra = array();
  68
  69         /**
  70          * @var Title
  71          */
  72         var $mTitle = false;
  73
  74         /**
  75          * @var User
  76          */
  77         private $mPerformer = false;
  78
  79         /**
  80          * @var Title
  81          */
  82         var $mMovedToTitle = false;
  83         var $numberofWatchingusers = 0; # Dummy to prevent error message in SpecialRecentchangeslinked
  84         var $notificationtimestamp;
  85
  86         # Factory methods
  87
  88         /**
  89          * @param $row
  90          * @return RecentChange
  91          */
  92         public static function newFromRow( $row ) {
  93                 $rc = new RecentChange;
  94                 $rc->loadFromRow( $row );
  95                 return $rc;
  96         }
  97
  98         /**
  99          * @param $row
 100          * @return RecentChange
 101          */
 102         public static function newFromCurRow( $row ) {
 103                 $rc = new RecentChange;
 104                 $rc->loadFromCurRow( $row );
 105                 $rc->notificationtimestamp = false;
 106                 $rc->numberofWatchingusers = false;
 107                 return $rc;
 108         }
 109
 110         /**
 111          * Obtain the recent change with a given rc_id value
 112          *
 113          * @param $rcid Int rc_id value to retrieve
 114          * @return RecentChange
 115          */
 116         public static function newFromId( $rcid ) {
 117                 return self::newFromConds( array( 'rc_id' => $rcid ), __METHOD__ );
 118         }
 119
 120         /**
 121          * Find the first recent change matching some specific conditions
 122          *
 123          * @param $conds Array of conditions
 124          * @param $fname Mixed: override the method name in profiling/logs
 125          * @return RecentChange
 126          */
 127         public static function newFromConds( $conds, $fname = __METHOD__ ) {
 128                 $dbr = wfGetDB( DB_SLAVE );
 129                 $row = $dbr->selectRow( 'recentchanges', self::selectFields(), $conds, $fname );
 130                 if ( $row !== false ) {
 131                         return self::newFromRow( $row );
 132                 } else {
 133                         return null;
 134                 }
 135         }
 136
 137         /**
 138          * Return the list of recentchanges fields that should be selected to create
 139          * a new recentchanges object.
 140          * @return array
 141          */
 142         public static function selectFields() {
 143                 return array(
 144                         'rc_id',
 145                         'rc_timestamp',
 146                         'rc_cur_time',
 147                         'rc_user',
 148                         'rc_user_text',
 149                         'rc_namespace',
 150                         'rc_title',
 151                         'rc_comment',
 152                         'rc_minor',
 153                         'rc_bot',
 154                         'rc_new',
 155                         'rc_cur_id',
 156                         'rc_this_oldid',
 157                         'rc_last_oldid',
 158                         'rc_type',
 159                         'rc_patrolled',
 160                         'rc_ip',
 161                         'rc_old_len',
 162                         'rc_new_len',
 163                         'rc_deleted',
 164                         'rc_logid',
 165                         'rc_log_type',
 166                         'rc_log_action',
 167                         'rc_params',
 168                 );
 169         }
 170
 171         # Accessors
 172
 173         /**
 174          * @param $attribs array
 175          */
 176         public function setAttribs( $attribs ) {
 177                 $this->mAttribs = $attribs;
 178         }
 179
 180         /**
 181          * @param $extra array
 182          */
 183         public function setExtra( $extra ) {
 184                 $this->mExtra = $extra;
 185         }
 186
 187         /**
 188          *
 189          * @return Title
 190          */
 191         public function &getTitle() {
 192                 if ( $this->mTitle === false ) {
 193                         $this->mTitle = Title::makeTitle( $this->mAttribs['rc_namespace'], $this->mAttribs['rc_title'] );
 194                 }
 195                 return $this->mTitle;
 196         }
 197
 198         /**
 199          * Get the User object of the person who performed this change.
 200          *
 201          * @return User
 202          */
 203         public function getPerformer() {
 204                 if ( $this->mPerformer === false ) {
 205                         if ( $this->mAttribs['rc_user'] ) {
 206                                 $this->mPerformer = User::newFromID( $this->mAttribs['rc_user'] );
 207                         } else {
 208                                 $this->mPerformer = User::newFromName( $this->mAttribs['rc_user_text'], false );
 209                         }
 210                 }
 211                 return $this->mPerformer;
 212         }
 213
 214         /**
 215          * Writes the data in this object to the database
 216          * @param $noudp bool
 217          */
 218         public function save( $noudp = false ) {
 219                 global $wgLocalInterwiki, $wgPutIPinRC, $wgUseEnotif, $wgShowUpdatedMarker, $wgContLang;
 220
 221                 $dbw = wfGetDB( DB_MASTER );
 222                 if ( !is_array( $this->mExtra ) ) {
 223                         $this->mExtra = array();
 224                 }
 225                 $this->mExtra['lang'] = $wgLocalInterwiki;
 226
 227                 if ( !$wgPutIPinRC ) {
 228                         $this->mAttribs['rc_ip'] = '';
 229                 }
 230
 231                 # If our database is strict about IP addresses, use NULL instead of an empty string
 232                 if ( $dbw->strictIPs() and $this->mAttribs['rc_ip'] == '' ) {
 233                         unset( $this->mAttribs['rc_ip'] );
 234                 }
 235
 236                 # Trim spaces on user supplied text
 237                 $this->mAttribs['rc_comment'] = trim( $this->mAttribs['rc_comment'] );
 238
 239                 # Make sure summary is truncated (whole multibyte characters)
 240                 $this->mAttribs['rc_comment'] = $wgContLang->truncate( $this->mAttribs['rc_comment'], 255 );
 241
 242                 # Fixup database timestamps
 243                 $this->mAttribs['rc_timestamp'] = $dbw->timestamp( $this->mAttribs['rc_timestamp'] );
 244                 $this->mAttribs['rc_cur_time'] = $dbw->timestamp( $this->mAttribs['rc_cur_time'] );
 245                 $this->mAttribs['rc_id'] = $dbw->nextSequenceValue( 'recentchanges_rc_id_seq' );
 246
 247                 ## If we are using foreign keys, an entry of 0 for the page_id will fail, so use NULL
 248                 if ( $dbw->cascadingDeletes() and $this->mAttribs['rc_cur_id'] == 0 ) {
 249                         unset( $this->mAttribs['rc_cur_id'] );
 250                 }
 251
 252                 # Insert new row
 253                 $dbw->insert( 'recentchanges', $this->mAttribs, __METHOD__ );
 254
 255                 # Set the ID
 256                 $this->mAttribs['rc_id'] = $dbw->insertId();
 257
 258                 # Notify extensions
 259                 wfRunHooks( 'RecentChange_save', array( &$this ) );
 260
 261                 # Notify external application via UDP
 262                 if ( !$noudp ) {
 263                         $this->notifyRC2UDP();
 264                 }
 265
 266                 # E-mail notifications
 267                 if ( $wgUseEnotif || $wgShowUpdatedMarker ) {
 268                         $editor = $this->getPerformer();
 269                         $title = $this->getTitle();
 270
 271                         if ( wfRunHooks( 'AbortEmailNotification', array( $editor, $title ) ) ) {
 272                                 # @todo FIXME: This would be better as an extension hook
 273                                 $enotif = new EmailNotification();
 274                                 $enotif->notifyOnPageChange( $editor, $title,
 275                                         $this->mAttribs['rc_timestamp'],
 276                                         $this->mAttribs['rc_comment'],
 277                                         $this->mAttribs['rc_minor'],
 278                                         $this->mAttribs['rc_last_oldid'],
 279                                         $this->mExtra['pageStatus'] );
 280                         }
 281                 }
 282         }
 283
 284         public function notifyRC2UDP() {
 285                 global $wgRC2UDPAddress, $wgRC2UDPOmitBots;
 286                 # Notify external application via UDP
 287                 if ( $wgRC2UDPAddress && ( !$this->mAttribs['rc_bot'] || !$wgRC2UDPOmitBots ) ) {
 288                         self::sendToUDP( $this->getIRCLine() );
 289                 }
 290         }
 291
 292         /**
 293          * Send some text to UDP.
 294          * @see RecentChange::cleanupForIRC
 295          * @param $line String: text to send
 296          * @param $address String: defaults to $wgRC2UDPAddress.
 297          * @param $prefix String: defaults to $wgRC2UDPPrefix.
 298          * @param $port Int: defaults to $wgRC2UDPPort. (Since 1.17)
 299          * @return Boolean: success
 300          */
 301         public static function sendToUDP( $line, $address = '', $prefix = '', $port = '' ) {
 302                 global $wgRC2UDPAddress, $wgRC2UDPPrefix, $wgRC2UDPPort;
 303                 # Assume default for standard RC case
 304                 $address = $address ? $address : $wgRC2UDPAddress;
 305                 $prefix = $prefix ? $prefix : $wgRC2UDPPrefix;
 306                 $port = $port ? $port : $wgRC2UDPPort;
 307                 # Notify external application via UDP
 308                 if ( $address ) {
 309                         $conn = socket_create( AF_INET, SOCK_DGRAM, SOL_UDP );
 310                         if ( $conn ) {
 311                                 $line = $prefix . $line;
 312                                 wfDebug( __METHOD__ . ": sending UDP line: $line\n" );
 313                                 socket_sendto( $conn, $line, strlen( $line ), 0, $address, $port );
 314                                 socket_close( $conn );
 315                                 return true;
 316                         } else {
 317                                 wfDebug( __METHOD__ . ": failed to create UDP socket\n" );
 318                         }
 319                 }
 320                 return false;
 321         }
 322
 323         /**
 324          * Remove newlines, carriage returns and decode html entites
 325          * @param $text String
 326          * @return String
 327          */
 328         public static function cleanupForIRC( $text ) {
 329                 return Sanitizer::decodeCharReferences( str_replace( array( "\n", "\r" ), array( "", "" ), $text ) );
 330         }
 331
 332         /**
 333          * Mark a given change as patrolled
 334          *
 335          * @param $change Mixed: RecentChange or corresponding rc_id
 336          * @param $auto Boolean: for automatic patrol
 337          * @return Array See doMarkPatrolled(), or null if $change is not an existing rc_id
 338          */
 339         public static function markPatrolled( $change, $auto = false ) {
 340                 global $wgUser;
 341
 342                 $change = $change instanceof RecentChange
 343                         ? $change
 344                         : RecentChange::newFromId( $change );
 345
 346                 if ( !$change instanceof RecentChange ) {
 347                         return null;
 348                 }
 349                 return $change->doMarkPatrolled( $wgUser, $auto );
 350         }
 351
 352         /**
 353          * Mark this RecentChange as patrolled
 354          *
 355          * NOTE: Can also return 'rcpatroldisabled', 'hookaborted' and 'markedaspatrollederror-noautopatrol' as errors
 356          * @param $user User object doing the action
 357          * @param $auto Boolean: for automatic patrol
 358          * @return array of permissions errors, see Title::getUserPermissionsErrors()
 359          */
 360         public function doMarkPatrolled( User $user, $auto = false ) {
 361                 global $wgUseRCPatrol, $wgUseNPPatrol;
 362                 $errors = array();
 363                 // If recentchanges patrol is disabled, only new pages
 364                 // can be patrolled
 365                 if ( !$wgUseRCPatrol && ( !$wgUseNPPatrol || $this->getAttribute( 'rc_type' ) != RC_NEW ) ) {
 366                         $errors[] = array( 'rcpatroldisabled' );
 367                 }
 368                 // Automatic patrol needs "autopatrol", ordinary patrol needs "patrol"
 369                 $right = $auto ? 'autopatrol' : 'patrol';
 370                 $errors = array_merge( $errors, $this->getTitle()->getUserPermissionsErrors( $right, $user ) );
 371                 if ( !wfRunHooks( 'MarkPatrolled', array( $this->getAttribute( 'rc_id' ), &$user, false ) ) ) {
 372                         $errors[] = array( 'hookaborted' );
 373                 }
 374                 // Users without the 'autopatrol' right can't patrol their
 375                 // own revisions
 376                 if ( $user->getName() == $this->getAttribute( 'rc_user_text' ) && !$user->isAllowed( 'autopatrol' ) ) {
 377                         $errors[] = array( 'markedaspatrollederror-noautopatrol' );
 378                 }
 379                 if ( $errors ) {
 380                         return $errors;
 381                 }
 382                 // If the change was patrolled already, do nothing
 383                 if ( $this->getAttribute( 'rc_patrolled' ) ) {
 384                         return array();
 385                 }
 386                 // Actually set the 'patrolled' flag in RC
 387                 $this->reallyMarkPatrolled();
 388                 // Log this patrol event
 389                 PatrolLog::record( $this, $auto, $user );
 390                 wfRunHooks( 'MarkPatrolledComplete', array( $this->getAttribute( 'rc_id' ), &$user, false ) );
 391                 return array();
 392         }
 393
 394         /**
 395          * Mark this RecentChange patrolled, without error checking
 396          * @return Integer: number of affected rows
 397          */
 398         public function reallyMarkPatrolled() {
 399                 $dbw = wfGetDB( DB_MASTER );
 400                 $dbw->update(
 401                         'recentchanges',
 402                         array(
 403                                 'rc_patrolled' => 1
 404                         ),
 405                         array(
 406                                 'rc_id' => $this->getAttribute( 'rc_id' )
 407                         ),
 408                         __METHOD__
 409                 );
 410                 return $dbw->affectedRows();
 411         }
 412
 413         /**
 414          * Makes an entry in the database corresponding to an edit
 415          *
 416          * @param $timestamp
 417          * @param $title Title
 418          * @param $minor
 419          * @param $user User
 420          * @param $comment
 421          * @param $oldId
 422          * @param $lastTimestamp
 423          * @param $bot
 424          * @param $ip string
 425          * @param $oldSize int
 426          * @param $newSize int
 427          * @param $newId int
 428          * @param $patrol int
 429          * @return RecentChange
 430          */
 431         public static function notifyEdit( $timestamp, &$title, $minor, &$user, $comment, $oldId,
 432                 $lastTimestamp, $bot, $ip = '', $oldSize = 0, $newSize = 0, $newId = 0, $patrol = 0 ) {
 433                 $rc = new RecentChange;
 434                 $rc->mTitle = $title;
 435                 $rc->mPerformer = $user;
 436                 $rc->mAttribs = array(
 437                         'rc_timestamp'  => $timestamp,
 438                         'rc_cur_time'   => $timestamp,
 439                         'rc_namespace'  => $title->getNamespace(),
 440                         'rc_title'      => $title->getDBkey(),
 441                         'rc_type'       => RC_EDIT,
 442                         'rc_minor'      => $minor ? 1 : 0,
 443                         'rc_cur_id'     => $title->getArticleID(),
 444                         'rc_user'       => $user->getId(),
 445                         'rc_user_text'  => $user->getName(),
 446                         'rc_comment'    => $comment,
 447                         'rc_this_oldid' => $newId,
 448                         'rc_last_oldid' => $oldId,
 449                         'rc_bot'        => $bot ? 1 : 0,
 450                         'rc_ip'         => self::checkIPAddress( $ip ),
 451                         'rc_patrolled'  => intval( $patrol ),
 452                         'rc_new'        => 0,  # obsolete
 453                         'rc_old_len'    => $oldSize,
 454                         'rc_new_len'    => $newSize,
 455                         'rc_deleted'    => 0,
 456                         'rc_logid'      => 0,
 457                         'rc_log_type'   => null,
 458                         'rc_log_action' => '',
 459                         'rc_params'     => ''
 460                 );
 461
 462                 $rc->mExtra =  array(
 463                         'prefixedDBkey' => $title->getPrefixedDBkey(),
 464                         'lastTimestamp' => $lastTimestamp,
 465                         'oldSize'       => $oldSize,
 466                         'newSize'       => $newSize,
 467                         'pageStatus'   => 'changed'
 468                 );
 469                 $rc->save();
 470                 return $rc;
 471         }
 472
 473         /**
 474          * Makes an entry in the database corresponding to page creation
 475          * Note: the title object must be loaded with the new id using resetArticleID()
 476          * @todo Document parameters and return
 477          *
 478          * @param $timestamp
 479          * @param $title Title
 480          * @param $minor
 481          * @param $user User
 482          * @param $comment
 483          * @param $bot
 484          * @param $ip string
 485          * @param $size int
 486          * @param $newId int
 487          * @param $patrol int
 488          * @return RecentChange
 489          */
 490         public static function notifyNew( $timestamp, &$title, $minor, &$user, $comment, $bot,
 491                 $ip = '', $size = 0, $newId = 0, $patrol = 0 ) {
 492                 $rc = new RecentChange;
 493                 $rc->mTitle = $title;
 494                 $rc->mPerformer = $user;
 495                 $rc->mAttribs = array(
 496                         'rc_timestamp'      => $timestamp,
 497                         'rc_cur_time'       => $timestamp,
 498                         'rc_namespace'      => $title->getNamespace(),
 499                         'rc_title'          => $title->getDBkey(),
 500                         'rc_type'           => RC_NEW,
 501                         'rc_minor'          => $minor ? 1 : 0,
 502                         'rc_cur_id'         => $title->getArticleID(),
 503                         'rc_user'           => $user->getId(),
 504                         'rc_user_text'      => $user->getName(),
 505                         'rc_comment'        => $comment,
 506                         'rc_this_oldid'     => $newId,
 507                         'rc_last_oldid'     => 0,
 508                         'rc_bot'            => $bot ? 1 : 0,
 509                         'rc_ip'             => self::checkIPAddress( $ip ),
 510                         'rc_patrolled'      => intval( $patrol ),
 511                         'rc_new'            => 1, # obsolete
 512                         'rc_old_len'        => 0,
 513                         'rc_new_len'        => $size,
 514                         'rc_deleted'        => 0,
 515                         'rc_logid'          => 0,
 516                         'rc_log_type'       => null,
 517                         'rc_log_action'     => '',
 518                         'rc_params'         => ''
 519                 );
 520
 521                 $rc->mExtra =  array(
 522                         'prefixedDBkey' => $title->getPrefixedDBkey(),
 523                         'lastTimestamp' => 0,
 524                         'oldSize' => 0,
 525                         'newSize' => $size,
 526                         'pageStatus' => 'created'
 527                 );
 528                 $rc->save();
 529                 return $rc;
 530         }
 531
 532         /**
 533          * @param $timestamp
 534          * @param $title
 535          * @param $user
 536          * @param $actionComment
 537          * @param $ip string
 538          * @param $type
 539          * @param $action
 540          * @param $target
 541          * @param $logComment
 542          * @param $params
 543          * @param $newId int
 544          * @param $actionCommentIRC string
 545          * @return bool
 546          */
 547         public static function notifyLog( $timestamp, &$title, &$user, $actionComment, $ip, $type,
 548                 $action, $target, $logComment, $params, $newId = 0, $actionCommentIRC = '' )
 549         {
 550                 global $wgLogRestrictions;
 551                 # Don't add private logs to RC!
 552                 if ( isset( $wgLogRestrictions[$type] ) && $wgLogRestrictions[$type] != '*' ) {
 553                         return false;
 554                 }
 555                 $rc = self::newLogEntry( $timestamp, $title, $user, $actionComment, $ip, $type, $action,
 556                         $target, $logComment, $params, $newId, $actionCommentIRC );
 557                 $rc->save();
 558                 return true;
 559         }
 560
 561         /**
 562          * @param $timestamp
 563          * @param $title Title
 564          * @param $user User
 565          * @param $actionComment
 566          * @param $ip string
 567          * @param $type
 568          * @param $action
 569          * @param $target Title
 570          * @param $logComment
 571          * @param $params
 572          * @param $newId int
 573          * @param $actionCommentIRC string
 574          * @return RecentChange
 575          */
 576         public static function newLogEntry( $timestamp, &$title, &$user, $actionComment, $ip,
 577                 $type, $action, $target, $logComment, $params, $newId = 0, $actionCommentIRC = '' ) {
 578                 global $wgRequest;
 579
 580                 ## Get pageStatus for email notification
 581                 switch ( $type . '-' . $action ) {
 582                         case 'delete-delete':
 583                                 $pageStatus = 'deleted';
 584                                 break;
 585                         case 'move-move':
 586                         case 'move-move_redir':
 587                                 $pageStatus = 'moved';
 588                                 break;
 589                         case 'delete-restore':
 590                                 $pageStatus = 'restored';
 591                                 break;
 592                         case 'upload-upload':
 593                                 $pageStatus = 'created';
 594                                 break;
 595                         case 'upload-overwrite':
 596                         default:
 597                                 $pageStatus = 'changed';
 598                                 break;
 599                 }
 600
 601                 $rc = new RecentChange;
 602                 $rc->mTitle = $target;
 603                 $rc->mPerformer = $user;
 604                 $rc->mAttribs = array(
 605                         'rc_timestamp'  => $timestamp,
 606                         'rc_cur_time'   => $timestamp,
 607                         'rc_namespace'  => $target->getNamespace(),
 608                         'rc_title'      => $target->getDBkey(),
 609                         'rc_type'       => RC_LOG,
 610                         'rc_minor'      => 0,
 611                         'rc_cur_id'     => $target->getArticleID(),
 612                         'rc_user'       => $user->getId(),
 613                         'rc_user_text'  => $user->getName(),
 614                         'rc_comment'    => $logComment,
 615                         'rc_this_oldid' => 0,
 616                         'rc_last_oldid' => 0,
 617                         'rc_bot'        => $user->isAllowed( 'bot' ) ? $wgRequest->getBool( 'bot', true ) : 0,
 618                         'rc_ip'         => self::checkIPAddress( $ip ),
 619                         'rc_patrolled'  => 1,
 620                         'rc_new'        => 0, # obsolete
 621                         'rc_old_len'    => null,
 622                         'rc_new_len'    => null,
 623                         'rc_deleted'    => 0,
 624                         'rc_logid'      => $newId,
 625                         'rc_log_type'   => $type,
 626                         'rc_log_action' => $action,
 627                         'rc_params'     => $params
 628                 );
 629
 630                 $rc->mExtra =  array(
 631                         'prefixedDBkey' => $title->getPrefixedDBkey(),
 632                         'lastTimestamp' => 0,
 633                         'actionComment' => $actionComment, // the comment appended to the action, passed from LogPage
 634                         'pageStatus'    => $pageStatus,
 635                         'actionCommentIRC' => $actionCommentIRC
 636                 );
 637                 return $rc;
 638         }
 639
 640         /**
 641          * Initialises the members of this object from a mysql row object
 642          *
 643          * @param $row
 644          */
 645         public function loadFromRow( $row ) {
 646                 $this->mAttribs = get_object_vars( $row );
 647                 $this->mAttribs['rc_timestamp'] = wfTimestamp( TS_MW, $this->mAttribs['rc_timestamp'] );
 648                 $this->mAttribs['rc_deleted'] = $row->rc_deleted; // MUST be set
 649         }
 650
 651         /**
 652          * Makes a pseudo-RC entry from a cur row
 653          *
 654          * @param $row
 655          */
 656         public function loadFromCurRow( $row ) {
 657                 $this->mAttribs = array(
 658                         'rc_timestamp' => wfTimestamp( TS_MW, $row->rev_timestamp ),
 659                         'rc_cur_time' => $row->rev_timestamp,
 660                         'rc_user' => $row->rev_user,
 661                         'rc_user_text' => $row->rev_user_text,
 662                         'rc_namespace' => $row->page_namespace,
 663                         'rc_title' => $row->page_title,
 664                         'rc_comment' => $row->rev_comment,
 665                         'rc_minor' => $row->rev_minor_edit ? 1 : 0,
 666                         'rc_type' => $row->page_is_new ? RC_NEW : RC_EDIT,
 667                         'rc_cur_id' => $row->page_id,
 668                         'rc_this_oldid' => $row->rev_id,
 669                         'rc_last_oldid' => isset( $row->rc_last_oldid ) ? $row->rc_last_oldid : 0,
 670                         'rc_bot' => 0,
 671                         'rc_ip' => '',
 672                         'rc_id' => $row->rc_id,
 673                         'rc_patrolled' => $row->rc_patrolled,
 674                         'rc_new' => $row->page_is_new, # obsolete
 675                         'rc_old_len' => $row->rc_old_len,
 676                         'rc_new_len' => $row->rc_new_len,
 677                         'rc_params' => isset( $row->rc_params ) ? $row->rc_params : '',
 678                         'rc_log_type' => isset( $row->rc_log_type ) ? $row->rc_log_type : null,
 679                         'rc_log_action' => isset( $row->rc_log_action ) ? $row->rc_log_action : null,
 680                         'rc_logid' => isset( $row->rc_logid ) ? $row->rc_logid : 0,
 681                         'rc_deleted' => $row->rc_deleted // MUST be set
 682                 );
 683         }
 684
 685         /**
 686          * Get an attribute value
 687          *
 688          * @param $name String Attribute name
 689          * @return mixed
 690          */
 691         public function getAttribute( $name ) {
 692                 return isset( $this->mAttribs[$name] ) ? $this->mAttribs[$name] : null;
 693         }
 694
 695         /**
 696          * @return array
 697          */
 698         public function getAttributes() {
 699                 return $this->mAttribs;
 700         }
 701
 702         /**
 703          * Gets the end part of the diff URL associated with this object
 704          * Blank if no diff link should be displayed
 705          * @param $forceCur
 706          * @return string
 707          */
 708         public function diffLinkTrail( $forceCur ) {
 709                 if ( $this->mAttribs['rc_type'] == RC_EDIT ) {
 710                         $trail = "curid=" . (int)( $this->mAttribs['rc_cur_id'] ) .
 711                                 "&oldid=" . (int)( $this->mAttribs['rc_last_oldid'] );
 712                         if ( $forceCur ) {
 713                                 $trail .= '&diff=0';
 714                         } else {
 715                                 $trail .= '&diff=' . (int)( $this->mAttribs['rc_this_oldid'] );
 716                         }
 717                 } else {
 718                         $trail = '';
 719                 }
 720                 return $trail;
 721         }
 722
 723         /**
 724          * @return string
 725          */
 726         public function getIRCLine() {
 727                 global $wgUseRCPatrol, $wgUseNPPatrol, $wgRC2UDPInterwikiPrefix, $wgLocalInterwiki,
 728                         $wgCanonicalServer, $wgScript;
 729
 730                 if ( $this->mAttribs['rc_type'] == RC_LOG ) {
 731                         // Don't use SpecialPage::getTitleFor, backwards compatibility with
 732                         // IRC API which expects "Log".
 733                         $titleObj = Title::newFromText( 'Log/' . $this->mAttribs['rc_log_type'], NS_SPECIAL );
 734                 } else {
 735                         $titleObj =& $this->getTitle();
 736                 }
 737                 $title = $titleObj->getPrefixedText();
 738                 $title = self::cleanupForIRC( $title );
 739
 740                 if ( $this->mAttribs['rc_type'] == RC_LOG ) {
 741                         $url = '';
 742                 } else {
 743                         $url = $wgCanonicalServer . $wgScript;
 744                         if ( $this->mAttribs['rc_type'] == RC_NEW ) {
 745                                 $query = '?oldid=' . $this->mAttribs['rc_this_oldid'];
 746                         } else {
 747                                 $query = '?diff=' . $this->mAttribs['rc_this_oldid'] . '&oldid=' . $this->mAttribs['rc_last_oldid'];
 748                         }
 749                         if ( $wgUseRCPatrol || ( $this->mAttribs['rc_type'] == RC_NEW && $wgUseNPPatrol ) ) {
 750                                 $query .= '&rcid=' . $this->mAttribs['rc_id'];
 751                         }
 752                         // HACK: We need this hook for WMF's secure server setup
 753                         wfRunHooks( 'IRCLineURL', array( &$url, &$query ) );
 754                         $url .= $query;
 755                 }
 756
 757                 if ( $this->mAttribs['rc_old_len'] !== null && $this->mAttribs['rc_new_len'] !== null ) {
 758                         $szdiff = $this->mAttribs['rc_new_len'] - $this->mAttribs['rc_old_len'];
 759                         if ( $szdiff < -500 ) {
 760                                 $szdiff = "\002$szdiff\002";
 761                         } elseif ( $szdiff >= 0 ) {
 762                                 $szdiff = '+' . $szdiff;
 763                         }
 764                         // @todo i18n with parentheses in content language?
 765                         $szdiff = '(' . $szdiff . ')';
 766                 } else {
 767                         $szdiff = '';
 768                 }
 769
 770                 $user = self::cleanupForIRC( $this->mAttribs['rc_user_text'] );
 771
 772                 if ( $this->mAttribs['rc_type'] == RC_LOG ) {
 773                         $targetText = $this->getTitle()->getPrefixedText();
 774                         $comment = self::cleanupForIRC( str_replace( "[[$targetText]]", "[[\00302$targetText\00310]]", $this->mExtra['actionCommentIRC'] ) );
 775                         $flag = $this->mAttribs['rc_log_action'];
 776                 } else {
 777                         $comment = self::cleanupForIRC( $this->mAttribs['rc_comment'] );
 778                         $flag = '';
 779                         if ( !$this->mAttribs['rc_patrolled'] && ( $wgUseRCPatrol || $this->mAttribs['rc_type'] == RC_NEW && $wgUseNPPatrol ) ) {
 780                                 $flag .= '!';
 781                         }
 782                         $flag .= ( $this->mAttribs['rc_type'] == RC_NEW ? "N" : "" ) . ( $this->mAttribs['rc_minor'] ? "M" : "" ) . ( $this->mAttribs['rc_bot'] ? "B" : "" );
 783                 }
 784
 785                 if ( $wgRC2UDPInterwikiPrefix === true && $wgLocalInterwiki !== false ) {
 786                         $prefix = $wgLocalInterwiki;
 787                 } elseif ( $wgRC2UDPInterwikiPrefix ) {
 788                         $prefix = $wgRC2UDPInterwikiPrefix;
 789                 } else {
 790                         $prefix = false;
 791                 }
 792                 if ( $prefix !== false ) {
 793                         $titleString = "\00314[[\00303$prefix:\00307$title\00314]]";
 794                 } else {
 795                         $titleString = "\00314[[\00307$title\00314]]";
 796                 }
 797
 798                 # see http://www.irssi.org/documentation/formats for some colour codes. prefix is \003,
 799                 # no colour (\003) switches back to the term default
 800                 $fullString = "$titleString\0034 $flag\00310 " .
 801                         "\00302$url\003 \0035*\003 \00303$user\003 \0035*\003 $szdiff \00310$comment\003\n";
 802
 803                 return $fullString;
 804         }
 805
 806         /**
 807          * Returns the change size (HTML).
 808          * The lengths can be given optionally.
 809          * @param $old int
 810          * @param $new int
 811          * @return string
 812          */
 813         public function getCharacterDifference( $old = 0, $new = 0 ) {
 814                 if ( $old === 0 ) {
 815                         $old = $this->mAttribs['rc_old_len'];
 816                 }
 817                 if ( $new === 0 ) {
 818                         $new = $this->mAttribs['rc_new_len'];
 819                 }
 820                 if ( $old === null || $new === null ) {
 821                         return '';
 822                 }
 823                 return ChangesList::showCharacterDifference( $old, $new );
 824         }
 825
 826         private static function checkIPAddress( $ip ) {
 827                 global $wgRequest;
 828                 if ( $ip ) {
 829                         if ( !IP::isIPAddress( $ip ) ) {
 830                                 throw new MWException( "Attempt to write \"" . $ip . "\" as an IP address into recent changes" );
 831                         }
 832                 } else {
 833                         $ip = $wgRequest->getIP();
 834                         if ( !$ip ) {
 835                                 $ip = '';
 836                         }
 837                 }
 838                 return $ip;
 839         }
 840 }