includes/changes/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_namespace    namespace #
  30  *  rc_title        non-prefixed db key
  31  *  rc_type         is new entry, used to determine whether updating is necessary
  32  *  rc_source       string representation of change source
  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  *  oldSize         text size before the change
  56  *  newSize         text size after the change
  57  *  pageStatus      status of the page: created, deleted, moved, restored, changed
  58  *
  59  * temporary:       not stored in the database
  60  *      notificationtimestamp
  61  *      numberofWatchingusers
  62  */
  63 class RecentChange {
  64         // Constants for the rc_source field.  Extensions may also have
  65         // their own source constants.
  66         const SRC_EDIT = 'mw.edit';
  67         const SRC_NEW = 'mw.new';
  68         const SRC_LOG = 'mw.log';
  69         const SRC_EXTERNAL = 'mw.external'; // obsolete
  70
  71         public $mAttribs = array();
  72         public $mExtra = array();
  73
  74         /**
  75          * @var Title
  76          */
  77         public $mTitle = false;
  78
  79         /**
  80          * @var User
  81          */
  82         private $mPerformer = false;
  83
  84         public $numberofWatchingusers = 0; # Dummy to prevent error message in SpecialRecentChangesLinked
  85         public $notificationtimestamp;
  86
  87         /**
  88          * @var int Line number of recent change. Default -1.
  89          */
  90         public $counter = -1;
  91
  92         /**
  93          * @var array Array of change types
  94          */
  95         private static $changeTypes = array(
  96                 'edit' => RC_EDIT,
  97                 'new' => RC_NEW,
  98                 'log' => RC_LOG,
  99                 'external' => RC_EXTERNAL,
 100         );
 101
 102         # Factory methods
 103
 104         /**
 105          * @param mixed $row
 106          * @return RecentChange
 107          */
 108         public static function newFromRow( $row ) {
 109                 $rc = new RecentChange;
 110                 $rc->loadFromRow( $row );
 111
 112                 return $rc;
 113         }
 114
 115         /**
 116          * Parsing text to RC_* constants
 117          * @since 1.24
 118          * @param string|array $type
 119          * @throws MWException
 120          * @return int|array RC_TYPE
 121          */
 122         public static function parseToRCType( $type ) {
 123                 if ( is_array( $type ) ) {
 124                         $retval = array();
 125                         foreach ( $type as $t ) {
 126                                 $retval[] = RecentChange::parseToRCType( $t );
 127                         }
 128
 129                         return $retval;
 130                 }
 131
 132                 if ( !array_key_exists( $type, self::$changeTypes ) ) {
 133                         throw new MWException( "Unknown type '$type'" );
 134                 }
 135                 return self::$changeTypes[$type];
 136         }
 137
 138         /**
 139          * Parsing RC_* constants to human-readable test
 140          * @since 1.24
 141          * @param int $rcType
 142          * @return string $type
 143          */
 144         public static function parseFromRCType( $rcType ) {
 145                 return array_search( $rcType, self::$changeTypes, true ) ?: "$rcType";
 146         }
 147
 148         /**
 149          * Get an array of all change types
 150          *
 151          * @since 1.26
 152          *
 153          * @return array
 154          */
 155         public static function getChangeTypes() {
 156                 return array_keys( self::$changeTypes );
 157         }
 158
 159         /**
 160          * Obtain the recent change with a given rc_id value
 161          *
 162          * @param int $rcid The rc_id value to retrieve
 163          * @return RecentChange|null
 164          */
 165         public static function newFromId( $rcid ) {
 166                 return self::newFromConds( array( 'rc_id' => $rcid ), __METHOD__ );
 167         }
 168
 169         /**
 170          * Find the first recent change matching some specific conditions
 171          *
 172          * @param array $conds Array of conditions
 173          * @param mixed $fname Override the method name in profiling/logs
 174          * @return RecentChange|null
 175          */
 176         public static function newFromConds( $conds, $fname = __METHOD__ ) {
 177                 $dbr = wfGetDB( DB_SLAVE );
 178                 $row = $dbr->selectRow( 'recentchanges', self::selectFields(), $conds, $fname );
 179                 if ( $row !== false ) {
 180                         return self::newFromRow( $row );
 181                 } else {
 182                         return null;
 183                 }
 184         }
 185
 186         /**
 187          * Return the list of recentchanges fields that should be selected to create
 188          * a new recentchanges object.
 189          * @return array
 190          */
 191         public static function selectFields() {
 192                 return array(
 193                         'rc_id',
 194                         'rc_timestamp',
 195                         'rc_user',
 196                         'rc_user_text',
 197                         'rc_namespace',
 198                         'rc_title',
 199                         'rc_comment',
 200                         'rc_minor',
 201                         'rc_bot',
 202                         'rc_new',
 203                         'rc_cur_id',
 204                         'rc_this_oldid',
 205                         'rc_last_oldid',
 206                         'rc_type',
 207                         'rc_source',
 208                         'rc_patrolled',
 209                         'rc_ip',
 210                         'rc_old_len',
 211                         'rc_new_len',
 212                         'rc_deleted',
 213                         'rc_logid',
 214                         'rc_log_type',
 215                         'rc_log_action',
 216                         'rc_params',
 217                 );
 218         }
 219
 220         # Accessors
 221
 222         /**
 223          * @param array $attribs
 224          */
 225         public function setAttribs( $attribs ) {
 226                 $this->mAttribs = $attribs;
 227         }
 228
 229         /**
 230          * @param array $extra
 231          */
 232         public function setExtra( $extra ) {
 233                 $this->mExtra = $extra;
 234         }
 235
 236         /**
 237          * @return Title
 238          */
 239         public function &getTitle() {
 240                 if ( $this->mTitle === false ) {
 241                         $this->mTitle = Title::makeTitle( $this->mAttribs['rc_namespace'], $this->mAttribs['rc_title'] );
 242                 }
 243
 244                 return $this->mTitle;
 245         }
 246
 247         /**
 248          * Get the User object of the person who performed this change.
 249          *
 250          * @return User
 251          */
 252         public function getPerformer() {
 253                 if ( $this->mPerformer === false ) {
 254                         if ( $this->mAttribs['rc_user'] ) {
 255                                 $this->mPerformer = User::newFromId( $this->mAttribs['rc_user'] );
 256                         } else {
 257                                 $this->mPerformer = User::newFromName( $this->mAttribs['rc_user_text'], false );
 258                         }
 259                 }
 260
 261                 return $this->mPerformer;
 262         }
 263
 264         /**
 265          * Writes the data in this object to the database
 266          * @param bool $noudp
 267          */
 268         public function save( $noudp = false ) {
 269                 global $wgPutIPinRC, $wgUseEnotif, $wgShowUpdatedMarker, $wgContLang;
 270
 271                 $dbw = wfGetDB( DB_MASTER );
 272                 if ( !is_array( $this->mExtra ) ) {
 273                         $this->mExtra = array();
 274                 }
 275
 276                 if ( !$wgPutIPinRC ) {
 277                         $this->mAttribs['rc_ip'] = '';
 278                 }
 279
 280                 # If our database is strict about IP addresses, use NULL instead of an empty string
 281                 if ( $dbw->strictIPs() && $this->mAttribs['rc_ip'] == '' ) {
 282                         unset( $this->mAttribs['rc_ip'] );
 283                 }
 284
 285                 # Trim spaces on user supplied text
 286                 $this->mAttribs['rc_comment'] = trim( $this->mAttribs['rc_comment'] );
 287
 288                 # Make sure summary is truncated (whole multibyte characters)
 289                 $this->mAttribs['rc_comment'] = $wgContLang->truncate( $this->mAttribs['rc_comment'], 255 );
 290
 291                 # Fixup database timestamps
 292                 $this->mAttribs['rc_timestamp'] = $dbw->timestamp( $this->mAttribs['rc_timestamp'] );
 293                 $this->mAttribs['rc_id'] = $dbw->nextSequenceValue( 'recentchanges_rc_id_seq' );
 294
 295                 # # If we are using foreign keys, an entry of 0 for the page_id will fail, so use NULL
 296                 if ( $dbw->cascadingDeletes() && $this->mAttribs['rc_cur_id'] == 0 ) {
 297                         unset( $this->mAttribs['rc_cur_id'] );
 298                 }
 299
 300                 # Insert new row
 301                 $dbw->insert( 'recentchanges', $this->mAttribs, __METHOD__ );
 302
 303                 # Set the ID
 304                 $this->mAttribs['rc_id'] = $dbw->insertId();
 305
 306                 # Notify extensions
 307                 Hooks::run( 'RecentChange_save', array( &$this ) );
 308
 309                 # Notify external application via UDP
 310                 if ( !$noudp ) {
 311                         $this->notifyRCFeeds();
 312                 }
 313
 314                 # E-mail notifications
 315                 if ( $wgUseEnotif || $wgShowUpdatedMarker ) {
 316                         $editor = $this->getPerformer();
 317                         $title = $this->getTitle();
 318
 319                         if ( Hooks::run( 'AbortEmailNotification', array( $editor, $title, $this ) ) ) {
 320                                 # @todo FIXME: This would be better as an extension hook
 321                                 $enotif = new EmailNotification();
 322                                 $enotif->notifyOnPageChange( $editor, $title,
 323                                         $this->mAttribs['rc_timestamp'],
 324                                         $this->mAttribs['rc_comment'],
 325                                         $this->mAttribs['rc_minor'],
 326                                         $this->mAttribs['rc_last_oldid'],
 327                                         $this->mExtra['pageStatus'] );
 328                         }
 329                 }
 330
 331                 // Update the cached list of active users
 332                 if ( $this->mAttribs['rc_user'] > 0 ) {
 333                         JobQueueGroup::singleton()->lazyPush( RecentChangesUpdateJob::newCacheUpdateJob() );
 334                 }
 335         }
 336
 337         /**
 338          * Notify all the feeds about the change.
 339          * @param array $feeds Optional feeds to send to, defaults to $wgRCFeeds
 340          */
 341         public function notifyRCFeeds( array $feeds = null ) {
 342                 global $wgRCFeeds;
 343                 if ( $feeds === null ) {
 344                         $feeds = $wgRCFeeds;
 345                 }
 346
 347                 $performer = $this->getPerformer();
 348
 349                 foreach ( $feeds as $feed ) {
 350                         $feed += array(
 351                                 'omit_bots' => false,
 352                                 'omit_anon' => false,
 353                                 'omit_user' => false,
 354                                 'omit_minor' => false,
 355                                 'omit_patrolled' => false,
 356                         );
 357
 358                         if (
 359                                 ( $feed['omit_bots'] && $this->mAttribs['rc_bot'] ) ||
 360                                 ( $feed['omit_anon'] && $performer->isAnon() ) ||
 361                                 ( $feed['omit_user'] && !$performer->isAnon() ) ||
 362                                 ( $feed['omit_minor'] && $this->mAttribs['rc_minor'] ) ||
 363                                 ( $feed['omit_patrolled'] && $this->mAttribs['rc_patrolled'] ) ||
 364                                 $this->mAttribs['rc_type'] == RC_EXTERNAL
 365                         ) {
 366                                 continue;
 367                         }
 368
 369                         $engine = self::getEngine( $feed['uri'] );
 370
 371                         if ( isset( $this->mExtra['actionCommentIRC'] ) ) {
 372                                 $actionComment = $this->mExtra['actionCommentIRC'];
 373                         } else {
 374                                 $actionComment = null;
 375                         }
 376
 377                         /** @var $formatter RCFeedFormatter */
 378                         $formatter = is_object( $feed['formatter'] ) ? $feed['formatter'] : new $feed['formatter']();
 379                         $line = $formatter->getLine( $feed, $this, $actionComment );
 380                         if ( !$line ) {
 381                                 // T109544
 382                                 // If a feed formatter returns null, this will otherwise cause an
 383                                 // error in at least RedisPubSubFeedEngine.
 384                                 // Not sure where/how this should best be handled.
 385                                 continue;
 386                         }
 387
 388                         $engine->send( $feed, $line );
 389                 }
 390         }
 391
 392         /**
 393          * Gets the stream engine object for a given URI from $wgRCEngines
 394          *
 395          * @param string $uri URI to get the engine object for
 396          * @throws MWException
 397          * @return RCFeedEngine The engine object
 398          */
 399         public static function getEngine( $uri ) {
 400                 global $wgRCEngines;
 401
 402                 $scheme = parse_url( $uri, PHP_URL_SCHEME );
 403                 if ( !$scheme ) {
 404                         throw new MWException( __FUNCTION__ . ": Invalid stream logger URI: '$uri'" );
 405                 }
 406
 407                 if ( !isset( $wgRCEngines[$scheme] ) ) {
 408                         throw new MWException( __FUNCTION__ . ": Unknown stream logger URI scheme: $scheme" );
 409                 }
 410
 411                 return new $wgRCEngines[$scheme];
 412         }
 413
 414         /**
 415          * Mark a given change as patrolled
 416          *
 417          * @param RecentChange|int $change RecentChange or corresponding rc_id
 418          * @param bool $auto For automatic patrol
 419          * @return array See doMarkPatrolled(), or null if $change is not an existing rc_id
 420          */
 421         public static function markPatrolled( $change, $auto = false ) {
 422                 global $wgUser;
 423
 424                 $change = $change instanceof RecentChange
 425                         ? $change
 426                         : RecentChange::newFromId( $change );
 427
 428                 if ( !$change instanceof RecentChange ) {
 429                         return null;
 430                 }
 431
 432                 return $change->doMarkPatrolled( $wgUser, $auto );
 433         }
 434
 435         /**
 436          * Mark this RecentChange as patrolled
 437          *
 438          * NOTE: Can also return 'rcpatroldisabled', 'hookaborted' and
 439          * 'markedaspatrollederror-noautopatrol' as errors
 440          * @param User $user User object doing the action
 441          * @param bool $auto For automatic patrol
 442          * @return array Array of permissions errors, see Title::getUserPermissionsErrors()
 443          */
 444         public function doMarkPatrolled( User $user, $auto = false ) {
 445                 global $wgUseRCPatrol, $wgUseNPPatrol;
 446                 $errors = array();
 447                 // If recentchanges patrol is disabled, only new pages
 448                 // can be patrolled
 449                 if ( !$wgUseRCPatrol && ( !$wgUseNPPatrol || $this->getAttribute( 'rc_type' ) != RC_NEW ) ) {
 450                         $errors[] = array( 'rcpatroldisabled' );
 451                 }
 452                 // Automatic patrol needs "autopatrol", ordinary patrol needs "patrol"
 453                 $right = $auto ? 'autopatrol' : 'patrol';
 454                 $errors = array_merge( $errors, $this->getTitle()->getUserPermissionsErrors( $right, $user ) );
 455                 if ( !Hooks::run( 'MarkPatrolled', array( $this->getAttribute( 'rc_id' ), &$user, false ) ) ) {
 456                         $errors[] = array( 'hookaborted' );
 457                 }
 458                 // Users without the 'autopatrol' right can't patrol their
 459                 // own revisions
 460                 if ( $user->getName() === $this->getAttribute( 'rc_user_text' )
 461                         && !$user->isAllowed( 'autopatrol' )
 462                 ) {
 463                         $errors[] = array( 'markedaspatrollederror-noautopatrol' );
 464                 }
 465                 if ( $errors ) {
 466                         return $errors;
 467                 }
 468                 // If the change was patrolled already, do nothing
 469                 if ( $this->getAttribute( 'rc_patrolled' ) ) {
 470                         return array();
 471                 }
 472                 // Actually set the 'patrolled' flag in RC
 473                 $this->reallyMarkPatrolled();
 474                 // Log this patrol event
 475                 PatrolLog::record( $this, $auto, $user );
 476                 Hooks::run( 'MarkPatrolledComplete', array( $this->getAttribute( 'rc_id' ), &$user, false ) );
 477
 478                 return array();
 479         }
 480
 481         /**
 482          * Mark this RecentChange patrolled, without error checking
 483          * @return int Number of affected rows
 484          */
 485         public function reallyMarkPatrolled() {
 486                 $dbw = wfGetDB( DB_MASTER );
 487                 $dbw->update(
 488                         'recentchanges',
 489                         array(
 490                                 'rc_patrolled' => 1
 491                         ),
 492                         array(
 493                                 'rc_id' => $this->getAttribute( 'rc_id' )
 494                         ),
 495                         __METHOD__
 496                 );
 497                 // Invalidate the page cache after the page has been patrolled
 498                 // to make sure that the Patrol link isn't visible any longer!
 499                 $this->getTitle()->invalidateCache();
 500
 501                 return $dbw->affectedRows();
 502         }
 503
 504         /**
 505          * Makes an entry in the database corresponding to an edit
 506          *
 507          * @param string $timestamp
 508          * @param Title $title
 509          * @param bool $minor
 510          * @param User $user
 511          * @param string $comment
 512          * @param int $oldId
 513          * @param string $lastTimestamp
 514          * @param bool $bot
 515          * @param string $ip
 516          * @param int $oldSize
 517          * @param int $newSize
 518          * @param int $newId
 519          * @param int $patrol
 520          * @return RecentChange
 521          */
 522         public static function notifyEdit(
 523                 $timestamp, &$title, $minor, &$user, $comment, $oldId, $lastTimestamp,
 524                 $bot, $ip = '', $oldSize = 0, $newSize = 0, $newId = 0, $patrol = 0
 525         ) {
 526                 $rc = new RecentChange;
 527                 $rc->mTitle = $title;
 528                 $rc->mPerformer = $user;
 529                 $rc->mAttribs = array(
 530                         'rc_timestamp' => $timestamp,
 531                         'rc_namespace' => $title->getNamespace(),
 532                         'rc_title' => $title->getDBkey(),
 533                         'rc_type' => RC_EDIT,
 534                         'rc_source' => self::SRC_EDIT,
 535                         'rc_minor' => $minor ? 1 : 0,
 536                         'rc_cur_id' => $title->getArticleID(),
 537                         'rc_user' => $user->getId(),
 538                         'rc_user_text' => $user->getName(),
 539                         'rc_comment' => $comment,
 540                         'rc_this_oldid' => $newId,
 541                         'rc_last_oldid' => $oldId,
 542                         'rc_bot' => $bot ? 1 : 0,
 543                         'rc_ip' => self::checkIPAddress( $ip ),
 544                         'rc_patrolled' => intval( $patrol ),
 545                         'rc_new' => 0, # obsolete
 546                         'rc_old_len' => $oldSize,
 547                         'rc_new_len' => $newSize,
 548                         'rc_deleted' => 0,
 549                         'rc_logid' => 0,
 550                         'rc_log_type' => null,
 551                         'rc_log_action' => '',
 552                         'rc_params' => ''
 553                 );
 554
 555                 $rc->mExtra = array(
 556                         'prefixedDBkey' => $title->getPrefixedDBkey(),
 557                         'lastTimestamp' => $lastTimestamp,
 558                         'oldSize' => $oldSize,
 559                         'newSize' => $newSize,
 560                         'pageStatus' => 'changed'
 561                 );
 562
 563                 DeferredUpdates::addCallableUpdate( function() use ( $rc ) {
 564                         $rc->save();
 565                         if ( $rc->mAttribs['rc_patrolled'] ) {
 566                                 PatrolLog::record( $rc, true, $rc->getPerformer() );
 567                         }
 568                 } );
 569
 570                 return $rc;
 571         }
 572
 573         /**
 574          * Makes an entry in the database corresponding to page creation
 575          * Note: the title object must be loaded with the new id using resetArticleID()
 576          *
 577          * @param string $timestamp
 578          * @param Title $title
 579          * @param bool $minor
 580          * @param User $user
 581          * @param string $comment
 582          * @param bool $bot
 583          * @param string $ip
 584          * @param int $size
 585          * @param int $newId
 586          * @param int $patrol
 587          * @return RecentChange
 588          */
 589         public static function notifyNew(
 590                 $timestamp, &$title, $minor, &$user, $comment, $bot,
 591                 $ip = '', $size = 0, $newId = 0, $patrol = 0
 592         ) {
 593                 $rc = new RecentChange;
 594                 $rc->mTitle = $title;
 595                 $rc->mPerformer = $user;
 596                 $rc->mAttribs = array(
 597                         'rc_timestamp' => $timestamp,
 598                         'rc_namespace' => $title->getNamespace(),
 599                         'rc_title' => $title->getDBkey(),
 600                         'rc_type' => RC_NEW,
 601                         'rc_source' => self::SRC_NEW,
 602                         'rc_minor' => $minor ? 1 : 0,
 603                         'rc_cur_id' => $title->getArticleID(),
 604                         'rc_user' => $user->getId(),
 605                         'rc_user_text' => $user->getName(),
 606                         'rc_comment' => $comment,
 607                         'rc_this_oldid' => $newId,
 608                         'rc_last_oldid' => 0,
 609                         'rc_bot' => $bot ? 1 : 0,
 610                         'rc_ip' => self::checkIPAddress( $ip ),
 611                         'rc_patrolled' => intval( $patrol ),
 612                         'rc_new' => 1, # obsolete
 613                         'rc_old_len' => 0,
 614                         'rc_new_len' => $size,
 615                         'rc_deleted' => 0,
 616                         'rc_logid' => 0,
 617                         'rc_log_type' => null,
 618                         'rc_log_action' => '',
 619                         'rc_params' => ''
 620                 );
 621
 622                 $rc->mExtra = array(
 623                         'prefixedDBkey' => $title->getPrefixedDBkey(),
 624                         'lastTimestamp' => 0,
 625                         'oldSize' => 0,
 626                         'newSize' => $size,
 627                         'pageStatus' => 'created'
 628                 );
 629
 630                 DeferredUpdates::addCallableUpdate( function() use ( $rc ) {
 631                         $rc->save();
 632                         if ( $rc->mAttribs['rc_patrolled'] ) {
 633                                 PatrolLog::record( $rc, true, $rc->getPerformer() );
 634                         }
 635                 } );
 636
 637                 return $rc;
 638         }
 639
 640         /**
 641          * @param string $timestamp
 642          * @param Title $title
 643          * @param User $user
 644          * @param string $actionComment
 645          * @param string $ip
 646          * @param string $type
 647          * @param string $action
 648          * @param Title $target
 649          * @param string $logComment
 650          * @param string $params
 651          * @param int $newId
 652          * @param string $actionCommentIRC
 653          * @return bool
 654          */
 655         public static function notifyLog( $timestamp, &$title, &$user, $actionComment, $ip, $type,
 656                 $action, $target, $logComment, $params, $newId = 0, $actionCommentIRC = ''
 657         ) {
 658                 global $wgLogRestrictions;
 659
 660                 # Don't add private logs to RC!
 661                 if ( isset( $wgLogRestrictions[$type] ) && $wgLogRestrictions[$type] != '*' ) {
 662                         return false;
 663                 }
 664                 $rc = self::newLogEntry( $timestamp, $title, $user, $actionComment, $ip, $type, $action,
 665                         $target, $logComment, $params, $newId, $actionCommentIRC );
 666                 $rc->save();
 667
 668                 return true;
 669         }
 670
 671         /**
 672          * @param string $timestamp
 673          * @param Title $title
 674          * @param User $user
 675          * @param string $actionComment
 676          * @param string $ip
 677          * @param string $type
 678          * @param string $action
 679          * @param Title $target
 680          * @param string $logComment
 681          * @param string $params
 682          * @param int $newId
 683          * @param string $actionCommentIRC
 684          * @return RecentChange
 685          */
 686         public static function newLogEntry( $timestamp, &$title, &$user, $actionComment, $ip,
 687                 $type, $action, $target, $logComment, $params, $newId = 0, $actionCommentIRC = '' ) {
 688                 global $wgRequest;
 689
 690                 # # Get pageStatus for email notification
 691                 switch ( $type . '-' . $action ) {
 692                         case 'delete-delete':
 693                                 $pageStatus = 'deleted';
 694                                 break;
 695                         case 'move-move':
 696                         case 'move-move_redir':
 697                                 $pageStatus = 'moved';
 698                                 break;
 699                         case 'delete-restore':
 700                                 $pageStatus = 'restored';
 701                                 break;
 702                         case 'upload-upload':
 703                                 $pageStatus = 'created';
 704                                 break;
 705                         case 'upload-overwrite':
 706                         default:
 707                                 $pageStatus = 'changed';
 708                                 break;
 709                 }
 710
 711                 $rc = new RecentChange;
 712                 $rc->mTitle = $target;
 713                 $rc->mPerformer = $user;
 714                 $rc->mAttribs = array(
 715                         'rc_timestamp' => $timestamp,
 716                         'rc_namespace' => $target->getNamespace(),
 717                         'rc_title' => $target->getDBkey(),
 718                         'rc_type' => RC_LOG,
 719                         'rc_source' => self::SRC_LOG,
 720                         'rc_minor' => 0,
 721                         'rc_cur_id' => $target->getArticleID(),
 722                         'rc_user' => $user->getId(),
 723                         'rc_user_text' => $user->getName(),
 724                         'rc_comment' => $logComment,
 725                         'rc_this_oldid' => 0,
 726                         'rc_last_oldid' => 0,
 727                         'rc_bot' => $user->isAllowed( 'bot' ) ? $wgRequest->getBool( 'bot', true ) : 0,
 728                         'rc_ip' => self::checkIPAddress( $ip ),
 729                         'rc_patrolled' => 1,
 730                         'rc_new' => 0, # obsolete
 731                         'rc_old_len' => null,
 732                         'rc_new_len' => null,
 733                         'rc_deleted' => 0,
 734                         'rc_logid' => $newId,
 735                         'rc_log_type' => $type,
 736                         'rc_log_action' => $action,
 737                         'rc_params' => $params
 738                 );
 739
 740                 $rc->mExtra = array(
 741                         'prefixedDBkey' => $title->getPrefixedDBkey(),
 742                         'lastTimestamp' => 0,
 743                         'actionComment' => $actionComment, // the comment appended to the action, passed from LogPage
 744                         'pageStatus' => $pageStatus,
 745                         'actionCommentIRC' => $actionCommentIRC
 746                 );
 747
 748                 return $rc;
 749         }
 750
 751         /**
 752          * Initialises the members of this object from a mysql row object
 753          *
 754          * @param mixed $row
 755          */
 756         public function loadFromRow( $row ) {
 757                 $this->mAttribs = get_object_vars( $row );
 758                 $this->mAttribs['rc_timestamp'] = wfTimestamp( TS_MW, $this->mAttribs['rc_timestamp'] );
 759                 $this->mAttribs['rc_deleted'] = $row->rc_deleted; // MUST be set
 760         }
 761
 762         /**
 763          * Get an attribute value
 764          *
 765          * @param string $name Attribute name
 766          * @return mixed
 767          */
 768         public function getAttribute( $name ) {
 769                 return isset( $this->mAttribs[$name] ) ? $this->mAttribs[$name] : null;
 770         }
 771
 772         /**
 773          * @return array
 774          */
 775         public function getAttributes() {
 776                 return $this->mAttribs;
 777         }
 778
 779         /**
 780          * Gets the end part of the diff URL associated with this object
 781          * Blank if no diff link should be displayed
 782          * @param bool $forceCur
 783          * @return string
 784          */
 785         public function diffLinkTrail( $forceCur ) {
 786                 if ( $this->mAttribs['rc_type'] == RC_EDIT ) {
 787                         $trail = "curid=" . (int)( $this->mAttribs['rc_cur_id'] ) .
 788                                 "&oldid=" . (int)( $this->mAttribs['rc_last_oldid'] );
 789                         if ( $forceCur ) {
 790                                 $trail .= '&diff=0';
 791                         } else {
 792                                 $trail .= '&diff=' . (int)( $this->mAttribs['rc_this_oldid'] );
 793                         }
 794                 } else {
 795                         $trail = '';
 796                 }
 797
 798                 return $trail;
 799         }
 800
 801         /**
 802          * Returns the change size (HTML).
 803          * The lengths can be given optionally.
 804          * @param int $old
 805          * @param int $new
 806          * @return string
 807          */
 808         public function getCharacterDifference( $old = 0, $new = 0 ) {
 809                 if ( $old === 0 ) {
 810                         $old = $this->mAttribs['rc_old_len'];
 811                 }
 812                 if ( $new === 0 ) {
 813                         $new = $this->mAttribs['rc_new_len'];
 814                 }
 815                 if ( $old === null || $new === null ) {
 816                         return '';
 817                 }
 818
 819                 return ChangesList::showCharacterDifference( $old, $new );
 820         }
 821
 822         private static function checkIPAddress( $ip ) {
 823                 global $wgRequest;
 824                 if ( $ip ) {
 825                         if ( !IP::isIPAddress( $ip ) ) {
 826                                 throw new MWException( "Attempt to write \"" . $ip .
 827                                         "\" as an IP address into recent changes" );
 828                         }
 829                 } else {
 830                         $ip = $wgRequest->getIP();
 831                         if ( !$ip ) {
 832                                 $ip = '';
 833                         }
 834                 }
 835
 836                 return $ip;
 837         }
 838
 839         /**
 840          * Check whether the given timestamp is new enough to have a RC row with a given tolerance
 841          * as the recentchanges table might not be cleared out regularly (so older entries might exist)
 842          * or rows which will be deleted soon shouldn't be included.
 843          *
 844          * @param mixed $timestamp MWTimestamp compatible timestamp
 845          * @param int $tolerance Tolerance in seconds
 846          * @return bool
 847          */
 848         public static function isInRCLifespan( $timestamp, $tolerance = 0 ) {
 849                 global $wgRCMaxAge;
 850
 851                 return wfTimestamp( TS_UNIX, $timestamp ) > time() - $tolerance - $wgRCMaxAge;
 852         }
 853
 854         /**
 855          * Parses and returns the rc_params attribute
 856          *
 857          * @since 1.26
 858          *
 859          * @return array|null
 860          */
 861         public function parseParams() {
 862                 $rcParams = $this->getAttribute( 'rc_params' );
 863
 864                 MediaWiki\suppressWarnings();
 865                 $unserializedParams = unserialize( $rcParams );
 866                 MediaWiki\restoreWarnings();
 867
 868                 return $unserializedParams;
 869         }
 870 }