includes/api/ApiQueryRecentChanges.php

   1 <?php
   2 /**
   3  *
   4  *
   5  * Created on Oct 19, 2006
   6  *
   7  * Copyright © 2006 Yuri Astrakhan <Firstname><Lastname>@gmail.com
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write to the Free Software Foundation, Inc.,
  21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  22  * http://www.gnu.org/copyleft/gpl.html
  23  *
  24  * @file
  25  */
  26
  27 if ( !defined( 'MEDIAWIKI' ) ) {
  28         // Eclipse helper - will be ignored in production
  29         require_once( 'ApiQueryBase.php' );
  30 }
  31
  32 /**
  33  * A query action to enumerate the recent changes that were done to the wiki.
  34  * Various filters are supported.
  35  *
  36  * @ingroup API
  37  */
  38 class ApiQueryRecentChanges extends ApiQueryGeneratorBase {
  39
  40         public function __construct( $query, $moduleName ) {
  41                 parent::__construct( $query, $moduleName, 'rc' );
  42         }
  43
  44         private $fld_comment = false, $fld_parsedcomment = false, $fld_user = false, $fld_userid = false,
  45                         $fld_flags = false, $fld_timestamp = false, $fld_title = false, $fld_ids = false,
  46                         $fld_sizes = false, $fld_redirect = false, $fld_patrolled = false, $fld_loginfo = false,
  47                         $fld_tags = false, $token = array();
  48
  49         private $tokenFunctions;
  50
  51         /**
  52          * Get an array mapping token names to their handler functions.
  53          * The prototype for a token function is func($pageid, $title, $rc)
  54          * it should return a token or false (permission denied)
  55          * @return array(tokenname => function)
  56          */
  57         protected function getTokenFunctions() {
  58                 // Don't call the hooks twice
  59                 if ( isset( $this->tokenFunctions ) ) {
  60                         return $this->tokenFunctions;
  61                 }
  62
  63                 // If we're in JSON callback mode, no tokens can be obtained
  64                 if ( !is_null( $this->getMain()->getRequest()->getVal( 'callback' ) ) ) {
  65                         return array();
  66                 }
  67
  68                 $this->tokenFunctions = array(
  69                         'patrol' => array( 'ApiQueryRecentChanges', 'getPatrolToken' )
  70                 );
  71                 wfRunHooks( 'APIQueryRecentChangesTokens', array( &$this->tokenFunctions ) );
  72                 return $this->tokenFunctions;
  73         }
  74
  75         /**
  76          * @static
  77          * @param  $pageid
  78          * @param  $title
  79          * @param $rc RecentChange
  80          * @return bool|String
  81          */
  82         public static function getPatrolToken( $pageid, $title, $rc ) {
  83                 global $wgUser;
  84                 if ( !$wgUser->useRCPatrol() && ( !$wgUser->useNPPatrol() ||
  85                                 $rc->getAttribute( 'rc_type' ) != RC_NEW ) )
  86                 {
  87                         return false;
  88                 }
  89
  90                 // The patrol token is always the same, let's exploit that
  91                 static $cachedPatrolToken = null;
  92                 if ( is_null( $cachedPatrolToken ) ) {
  93                         $cachedPatrolToken = $wgUser->editToken( 'patrol' );
  94                 }
  95
  96                 return $cachedPatrolToken;
  97         }
  98
  99         /**
 100          * Sets internal state to include the desired properties in the output.
 101          * @param $prop Array associative array of properties, only keys are used here
 102          */
 103         public function initProperties( $prop ) {
 104                 $this->fld_comment = isset( $prop['comment'] );
 105                 $this->fld_parsedcomment = isset( $prop['parsedcomment'] );
 106                 $this->fld_user = isset( $prop['user'] );
 107                 $this->fld_userid = isset( $prop['userid'] );
 108                 $this->fld_flags = isset( $prop['flags'] );
 109                 $this->fld_timestamp = isset( $prop['timestamp'] );
 110                 $this->fld_title = isset( $prop['title'] );
 111                 $this->fld_ids = isset( $prop['ids'] );
 112                 $this->fld_sizes = isset( $prop['sizes'] );
 113                 $this->fld_redirect = isset( $prop['redirect'] );
 114                 $this->fld_patrolled = isset( $prop['patrolled'] );
 115                 $this->fld_loginfo = isset( $prop['loginfo'] );
 116                 $this->fld_tags = isset( $prop['tags'] );
 117         }
 118
 119         public function execute() {
 120                 $this->run();
 121         }
 122
 123         public function executeGenerator( $resultPageSet ) {
 124                 $this->run( $resultPageSet );
 125         }
 126
 127         /**
 128          * Generates and outputs the result of this query based upon the provided parameters.
 129          *
 130          * @param $resultPageSet ApiPageSet
 131          */
 132         public function run( $resultPageSet = null ) {
 133                 global $wgUser;
 134                 /* Get the parameters of the request. */
 135                 $params = $this->extractRequestParams();
 136
 137                 /* Build our basic query. Namely, something along the lines of:
 138                  * SELECT * FROM recentchanges WHERE rc_timestamp > $start
 139                  *              AND rc_timestamp < $end AND rc_namespace = $namespace
 140                  *              AND rc_deleted = '0'
 141                  */
 142                 $this->addTables( 'recentchanges' );
 143                 $index = array( 'recentchanges' => 'rc_timestamp' ); // May change
 144                 $this->addWhereRange( 'rc_timestamp', $params['dir'], $params['start'], $params['end'] );
 145                 $this->addWhereFld( 'rc_namespace', $params['namespace'] );
 146                 $this->addWhereFld( 'rc_deleted', 0 );
 147
 148                 if ( !is_null( $params['type'] ) ) {
 149                         $this->addWhereFld( 'rc_type', $this->parseRCType( $params['type'] ) );
 150                 }
 151
 152                 if ( !is_null( $params['show'] ) ) {
 153                         $show = array_flip( $params['show'] );
 154
 155                         /* Check for conflicting parameters. */
 156                         if ( ( isset( $show['minor'] ) && isset( $show['!minor'] ) )
 157                                         || ( isset( $show['bot'] ) && isset( $show['!bot'] ) )
 158                                         || ( isset( $show['anon'] ) && isset( $show['!anon'] ) )
 159                                         || ( isset( $show['redirect'] ) && isset( $show['!redirect'] ) )
 160                                         || ( isset( $show['patrolled'] ) && isset( $show['!patrolled'] ) )
 161                         )
 162                         {
 163                                 $this->dieUsageMsg( array( 'show' ) );
 164                         }
 165
 166                         // Check permissions
 167                         if ( isset( $show['patrolled'] ) || isset( $show['!patrolled'] ) ) {
 168                                 if ( !$wgUser->useRCPatrol() && !$wgUser->useNPPatrol() ) {
 169                                         $this->dieUsage( 'You need the patrol right to request the patrolled flag', 'permissiondenied' );
 170                                 }
 171                         }
 172
 173                         /* Add additional conditions to query depending upon parameters. */
 174                         $this->addWhereIf( 'rc_minor = 0', isset( $show['!minor'] ) );
 175                         $this->addWhereIf( 'rc_minor != 0', isset( $show['minor'] ) );
 176                         $this->addWhereIf( 'rc_bot = 0', isset( $show['!bot'] ) );
 177                         $this->addWhereIf( 'rc_bot != 0', isset( $show['bot'] ) );
 178                         $this->addWhereIf( 'rc_user = 0', isset( $show['anon'] ) );
 179                         $this->addWhereIf( 'rc_user != 0', isset( $show['!anon'] ) );
 180                         $this->addWhereIf( 'rc_patrolled = 0', isset( $show['!patrolled'] ) );
 181                         $this->addWhereIf( 'rc_patrolled != 0', isset( $show['patrolled'] ) );
 182                         $this->addWhereIf( 'page_is_redirect = 1', isset( $show['redirect'] ) );
 183
 184                         // Don't throw log entries out the window here
 185                         $this->addWhereIf( 'page_is_redirect = 0 OR page_is_redirect IS NULL', isset( $show['!redirect'] ) );
 186                 }
 187
 188                 if ( !is_null( $params['user'] ) && !is_null( $params['excludeuser'] ) ) {
 189                         $this->dieUsage( 'user and excludeuser cannot be used together', 'user-excludeuser' );
 190                 }
 191
 192                 if ( !is_null( $params['user'] ) ) {
 193                         $this->addWhereFld( 'rc_user_text', $params['user'] );
 194                         $index['recentchanges'] = 'rc_user_text';
 195                 }
 196
 197                 if ( !is_null( $params['excludeuser'] ) ) {
 198                         // We don't use the rc_user_text index here because
 199                         // * it would require us to sort by rc_user_text before rc_timestamp
 200                         // * the != condition doesn't throw out too many rows anyway
 201                         $this->addWhere( 'rc_user_text != ' . $this->getDB()->addQuotes( $params['excludeuser'] ) );
 202                 }
 203
 204                 /* Add the fields we're concerned with to our query. */
 205                 $this->addFields( array(
 206                         'rc_timestamp',
 207                         'rc_namespace',
 208                         'rc_title',
 209                         'rc_cur_id',
 210                         'rc_type',
 211                         'rc_moved_to_ns',
 212                         'rc_moved_to_title',
 213                         'rc_deleted'
 214                 ) );
 215
 216                 /* Determine what properties we need to display. */
 217                 if ( !is_null( $params['prop'] ) ) {
 218                         $prop = array_flip( $params['prop'] );
 219
 220                         /* Set up internal members based upon params. */
 221                         $this->initProperties( $prop );
 222
 223                         if ( $this->fld_patrolled && !$wgUser->useRCPatrol() && !$wgUser->useNPPatrol() ) {
 224                                 $this->dieUsage( 'You need the patrol right to request the patrolled flag', 'permissiondenied' );
 225                         }
 226
 227                         /* Add fields to our query if they are specified as a needed parameter. */
 228                         $this->addFieldsIf( 'rc_id', $this->fld_ids );
 229                         $this->addFieldsIf( 'rc_this_oldid', $this->fld_ids );
 230                         $this->addFieldsIf( 'rc_last_oldid', $this->fld_ids );
 231                         $this->addFieldsIf( 'rc_comment', $this->fld_comment || $this->fld_parsedcomment );
 232                         $this->addFieldsIf( 'rc_user', $this->fld_user );
 233                         $this->addFieldsIf( 'rc_user_text', $this->fld_user || $this->fld_userid );
 234                         $this->addFieldsIf( 'rc_minor', $this->fld_flags );
 235                         $this->addFieldsIf( 'rc_bot', $this->fld_flags );
 236                         $this->addFieldsIf( 'rc_new', $this->fld_flags );
 237                         $this->addFieldsIf( 'rc_old_len', $this->fld_sizes );
 238                         $this->addFieldsIf( 'rc_new_len', $this->fld_sizes );
 239                         $this->addFieldsIf( 'rc_patrolled', $this->fld_patrolled );
 240                         $this->addFieldsIf( 'rc_logid', $this->fld_loginfo );
 241                         $this->addFieldsIf( 'rc_log_type', $this->fld_loginfo );
 242                         $this->addFieldsIf( 'rc_log_action', $this->fld_loginfo );
 243                         $this->addFieldsIf( 'rc_params', $this->fld_loginfo );
 244                         if ( $this->fld_redirect || isset( $show['redirect'] ) || isset( $show['!redirect'] ) ) {
 245                                 $this->addTables( 'page' );
 246                                 $this->addJoinConds( array( 'page' => array( 'LEFT JOIN', array( 'rc_namespace=page_namespace', 'rc_title=page_title' ) ) ) );
 247                                 $this->addFields( 'page_is_redirect' );
 248                         }
 249                 }
 250
 251                 if ( $this->fld_tags ) {
 252                         $this->addTables( 'tag_summary' );
 253                         $this->addJoinConds( array( 'tag_summary' => array( 'LEFT JOIN', array( 'rc_id=ts_rc_id' ) ) ) );
 254                         $this->addFields( 'ts_tags' );
 255                 }
 256
 257                 if ( !is_null( $params['tag'] ) ) {
 258                         $this->addTables( 'change_tag' );
 259                         $this->addJoinConds( array( 'change_tag' => array( 'INNER JOIN', array( 'rc_id=ct_rc_id' ) ) ) );
 260                         $this->addWhereFld( 'ct_tag' , $params['tag'] );
 261                         global $wgOldChangeTagsIndex;
 262                         $index['change_tag'] = $wgOldChangeTagsIndex ? 'ct_tag' : 'change_tag_tag_id';
 263                 }
 264
 265                 $this->token = $params['token'];
 266                 $this->addOption( 'LIMIT', $params['limit'] + 1 );
 267                 $this->addOption( 'USE INDEX', $index );
 268
 269                 $count = 0;
 270                 /* Perform the actual query. */
 271                 $res = $this->select( __METHOD__ );
 272
 273                 $titles = array();
 274
 275                 /* Iterate through the rows, adding data extracted from them to our query result. */
 276                 foreach ( $res as $row ) {
 277                         if ( ++ $count > $params['limit'] ) {
 278                                 // We've reached the one extra which shows that there are additional pages to be had. Stop here...
 279                                 $this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->rc_timestamp ) );
 280                                 break;
 281                         }
 282
 283                         if ( is_null( $resultPageSet ) ) {
 284                                 /* Extract the data from a single row. */
 285                                 $vals = $this->extractRowInfo( $row );
 286
 287                                 /* Add that row's data to our final output. */
 288                                 if ( !$vals ) {
 289                                         continue;
 290                                 }
 291                                 $fit = $this->getResult()->addValue( array( 'query', $this->getModuleName() ), null, $vals );
 292                                 if ( !$fit ) {
 293                                         $this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->rc_timestamp ) );
 294                                         break;
 295                                 }
 296                         } else {
 297                                 $titles[] = Title::makeTitle( $row->rc_namespace, $row->rc_title );
 298                         }
 299                 }
 300
 301                 if ( is_null( $resultPageSet ) ) {
 302                         /* Format the result */
 303                         $this->getResult()->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'rc' );
 304                 } else {
 305                         $resultPageSet->populateFromTitles( $titles );
 306                 }
 307         }
 308
 309         /**
 310          * Extracts from a single sql row the data needed to describe one recent change.
 311          *
 312          * @param $row The row from which to extract the data.
 313          * @return An array mapping strings (descriptors) to their respective string values.
 314          * @access public
 315          */
 316         public function extractRowInfo( $row ) {
 317                 /* If page was moved somewhere, get the title of the move target. */
 318                 $movedToTitle = false;
 319                 if ( isset( $row->rc_moved_to_title ) && $row->rc_moved_to_title !== '' ) {
 320                         $movedToTitle = Title::makeTitle( $row->rc_moved_to_ns, $row->rc_moved_to_title );
 321                 }
 322
 323                 /* Determine the title of the page that has been changed. */
 324                 $title = Title::makeTitle( $row->rc_namespace, $row->rc_title );
 325
 326                 /* Our output data. */
 327                 $vals = array();
 328
 329                 $type = intval( $row->rc_type );
 330
 331                 /* Determine what kind of change this was. */
 332                 switch ( $type ) {
 333                         case RC_EDIT:
 334                                 $vals['type'] = 'edit';
 335                                 break;
 336                         case RC_NEW:
 337                                 $vals['type'] = 'new';
 338                                 break;
 339                         case RC_MOVE:
 340                                 $vals['type'] = 'move';
 341                                 break;
 342                         case RC_LOG:
 343                                 $vals['type'] = 'log';
 344                                 break;
 345                         case RC_MOVE_OVER_REDIRECT:
 346                                 $vals['type'] = 'move over redirect';
 347                                 break;
 348                         default:
 349                                 $vals['type'] = $type;
 350                 }
 351
 352                 /* Create a new entry in the result for the title. */
 353                 if ( $this->fld_title ) {
 354                         ApiQueryBase::addTitleInfo( $vals, $title );
 355                         if ( $movedToTitle ) {
 356                                 ApiQueryBase::addTitleInfo( $vals, $movedToTitle, 'new_' );
 357                         }
 358                 }
 359
 360                 /* Add ids, such as rcid, pageid, revid, and oldid to the change's info. */
 361                 if ( $this->fld_ids ) {
 362                         $vals['rcid'] = intval( $row->rc_id );
 363                         $vals['pageid'] = intval( $row->rc_cur_id );
 364                         $vals['revid'] = intval( $row->rc_this_oldid );
 365                         $vals['old_revid'] = intval( $row->rc_last_oldid );
 366                 }
 367
 368                 /* Add user data and 'anon' flag, if use is anonymous. */
 369                 if ( $this->fld_user || $this->fld_userid ) {
 370
 371                         if ( $this->fld_user ) {
 372                                 $vals['user'] = $row->rc_user_text;
 373                         }
 374
 375                         if ( $this->fld_userid ) {
 376                                 $vals['userid'] = $row->rc_user;
 377                         }
 378
 379                         if ( !$row->rc_user ) {
 380                                 $vals['anon'] = '';
 381                         }
 382                 }
 383
 384                 /* Add flags, such as new, minor, bot. */
 385                 if ( $this->fld_flags ) {
 386                         if ( $row->rc_bot ) {
 387                                 $vals['bot'] = '';
 388                         }
 389                         if ( $row->rc_new ) {
 390                                 $vals['new'] = '';
 391                         }
 392                         if ( $row->rc_minor ) {
 393                                 $vals['minor'] = '';
 394                         }
 395                 }
 396
 397                 /* Add sizes of each revision. (Only available on 1.10+) */
 398                 if ( $this->fld_sizes ) {
 399                         $vals['oldlen'] = intval( $row->rc_old_len );
 400                         $vals['newlen'] = intval( $row->rc_new_len );
 401                 }
 402
 403                 /* Add the timestamp. */
 404                 if ( $this->fld_timestamp ) {
 405                         $vals['timestamp'] = wfTimestamp( TS_ISO_8601, $row->rc_timestamp );
 406                 }
 407
 408                 /* Add edit summary / log summary. */
 409                 if ( $this->fld_comment && isset( $row->rc_comment ) ) {
 410                         $vals['comment'] = $row->rc_comment;
 411                 }
 412
 413                 if ( $this->fld_parsedcomment && isset( $row->rc_comment ) ) {
 414                         global $wgUser;
 415                         $vals['parsedcomment'] = $wgUser->getSkin()->formatComment( $row->rc_comment, $title );
 416                 }
 417
 418                 if ( $this->fld_redirect ) {
 419                         if ( $row->page_is_redirect ) {
 420                                 $vals['redirect'] = '';
 421                         }
 422                 }
 423
 424                 /* Add the patrolled flag */
 425                 if ( $this->fld_patrolled && $row->rc_patrolled == 1 ) {
 426                         $vals['patrolled'] = '';
 427                 }
 428
 429                 if ( $this->fld_loginfo && $row->rc_type == RC_LOG ) {
 430                         $vals['logid'] = intval( $row->rc_logid );
 431                         $vals['logtype'] = $row->rc_log_type;
 432                         $vals['logaction'] = $row->rc_log_action;
 433                         ApiQueryLogEvents::addLogParams(
 434                                 $this->getResult(),
 435                                 $vals, $row->rc_params,
 436                                 $row->rc_log_type, $row->rc_timestamp
 437                         );
 438                 }
 439
 440                 if ( $this->fld_tags ) {
 441                         if ( $row->ts_tags ) {
 442                                 $tags = explode( ',', $row->ts_tags );
 443                                 $this->getResult()->setIndexedTagName( $tags, 'tag' );
 444                                 $vals['tags'] = $tags;
 445                         } else {
 446                                 $vals['tags'] = array();
 447                         }
 448                 }
 449
 450                 if ( !is_null( $this->token ) ) {
 451                         $tokenFunctions = $this->getTokenFunctions();
 452                         foreach ( $this->token as $t ) {
 453                                 $val = call_user_func( $tokenFunctions[$t], $row->rc_cur_id,
 454                                         $title, RecentChange::newFromRow( $row ) );
 455                                 if ( $val === false ) {
 456                                         $this->setWarning( "Action '$t' is not allowed for the current user" );
 457                                 } else {
 458                                         $vals[$t . 'token'] = $val;
 459                                 }
 460                         }
 461                 }
 462
 463                 return $vals;
 464         }
 465
 466         private function parseRCType( $type ) {
 467                 if ( is_array( $type ) ) {
 468                         $retval = array();
 469                         foreach ( $type as $t ) {
 470                                 $retval[] = $this->parseRCType( $t );
 471                         }
 472                         return $retval;
 473                 }
 474                 switch( $type ) {
 475                         case 'edit':
 476                                 return RC_EDIT;
 477                         case 'new':
 478                                 return RC_NEW;
 479                         case 'log':
 480                                 return RC_LOG;
 481                 }
 482         }
 483
 484         public function getCacheMode( $params ) {
 485                 if ( isset( $params['show'] ) ) {
 486                         foreach ( $params['show'] as $show ) {
 487                                 if ( $show === 'patrolled' || $show === '!patrolled' ) {
 488                                         return 'private';
 489                                 }
 490                         }
 491                 }
 492                 if ( isset( $params['token'] ) ) {
 493                         return 'private';
 494                 }
 495                 if ( !is_null( $params['prop'] ) && in_array( 'parsedcomment', $params['prop'] ) ) {
 496                         // formatComment() calls wfMsg() among other things
 497                         return 'anon-public-user-private';
 498                 }
 499                 return 'public';
 500         }
 501
 502         public function getAllowedParams() {
 503                 return array(
 504                         'start' => array(
 505                                 ApiBase::PARAM_TYPE => 'timestamp'
 506                         ),
 507                         'end' => array(
 508                                 ApiBase::PARAM_TYPE => 'timestamp'
 509                         ),
 510                         'dir' => array(
 511                                 ApiBase::PARAM_DFLT => 'older',
 512                                 ApiBase::PARAM_TYPE => array(
 513                                         'newer',
 514                                         'older'
 515                                 )
 516                         ),
 517                         'namespace' => array(
 518                                 ApiBase::PARAM_ISMULTI => true,
 519                                 ApiBase::PARAM_TYPE => 'namespace'
 520                         ),
 521                         'user' => array(
 522                                 ApiBase::PARAM_TYPE => 'user'
 523                         ),
 524                         'excludeuser' => array(
 525                                 ApiBase::PARAM_TYPE => 'user'
 526                         ),
 527                         'tag' => null,
 528                         'prop' => array(
 529                                 ApiBase::PARAM_ISMULTI => true,
 530                                 ApiBase::PARAM_DFLT => 'title|timestamp|ids',
 531                                 ApiBase::PARAM_TYPE => array(
 532                                         'user',
 533                                         'userid',
 534                                         'comment',
 535                                         'parsedcomment',
 536                                         'flags',
 537                                         'timestamp',
 538                                         'title',
 539                                         'ids',
 540                                         'sizes',
 541                                         'redirect',
 542                                         'patrolled',
 543                                         'loginfo',
 544                                         'tags'
 545                                 )
 546                         ),
 547                         'token' => array(
 548                                 ApiBase::PARAM_TYPE => array_keys( $this->getTokenFunctions() ),
 549                                 ApiBase::PARAM_ISMULTI => true
 550                         ),
 551                         'show' => array(
 552                                 ApiBase::PARAM_ISMULTI => true,
 553                                 ApiBase::PARAM_TYPE => array(
 554                                         'minor',
 555                                         '!minor',
 556                                         'bot',
 557                                         '!bot',
 558                                         'anon',
 559                                         '!anon',
 560                                         'redirect',
 561                                         '!redirect',
 562                                         'patrolled',
 563                                         '!patrolled'
 564                                 )
 565                         ),
 566                         'limit' => array(
 567                                 ApiBase::PARAM_DFLT => 10,
 568                                 ApiBase::PARAM_TYPE => 'limit',
 569                                 ApiBase::PARAM_MIN => 1,
 570                                 ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
 571                                 ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
 572                         ),
 573                         'type' => array(
 574                                 ApiBase::PARAM_ISMULTI => true,
 575                                 ApiBase::PARAM_TYPE => array(
 576                                         'edit',
 577                                         'new',
 578                                         'log'
 579                                 )
 580                         )
 581                 );
 582         }
 583
 584         public function getParamDescription() {
 585                 $p = $this->getModulePrefix();
 586                 return array(
 587                         'start' => 'The timestamp to start enumerating from',
 588                         'end' => 'The timestamp to end enumerating',
 589                         'dir' => $this->getDirectionDescription( $p ),
 590                         'namespace' => 'Filter log entries to only this namespace(s)',
 591                         'user' => 'Only list changes by this user',
 592                         'excludeuser' => 'Don\'t list changes by this user',
 593                         'prop' => array(
 594                                 'Include additional pieces of information',
 595                                 ' user           - Adds the user responsible for the edit and tags if they are an IP',
 596                                 ' userid         - Adds the user id responsible for the edit',
 597                                 ' comment        - Adds the comment for the edit',
 598                                 ' parsedcomment  - Adds the parsed comment for the edit',
 599                                 ' flags          - Adds flags for the edit',
 600                                 ' timestamp      - Adds timestamp of the edit',
 601                                 ' title          - Adds the page title of the edit',
 602                                 ' ids            - Adds the page ID, recent changes ID and the new and old revision ID',
 603                                 ' sizes          - Adds the new and old page length in bytes',
 604                                 ' redirect       - Tags edit if page is a redirect',
 605                                 ' patrolled      - Tags edits that have been patrolled',
 606                                 ' loginfo        - Adds log information (logid, logtype, etc) to log entries',
 607                                 ' tags           - Lists tags for the entry',
 608                         ),
 609                         'token' => 'Which tokens to obtain for each change',
 610                         'show' => array(
 611                                 'Show only items that meet this criteria.',
 612                                 "For example, to see only minor edits done by logged-in users, set {$p}show=minor|!anon"
 613                         ),
 614                         'type' => 'Which types of changes to show',
 615                         'limit' => 'How many total changes to return',
 616                         'tag' => 'Only list changes tagged with this tag',
 617                 );
 618         }
 619
 620         public function getDescription() {
 621                 return 'Enumerate recent changes';
 622         }
 623
 624         public function getPossibleErrors() {
 625                 return array_merge( parent::getPossibleErrors(), array(
 626                         array( 'show' ),
 627                         array( 'code' => 'permissiondenied', 'info' => 'You need the patrol right to request the patrolled flag' ),
 628                         array( 'code' => 'user-excludeuser', 'info' => 'user and excludeuser cannot be used together' ),
 629                 ) );
 630         }
 631
 632         protected function getExamples() {
 633                 return array(
 634                         'api.php?action=query&list=recentchanges'
 635                 );
 636         }
 637
 638         public function getVersion() {
 639                 return __CLASS__ . ': $Id$';
 640         }
 641 }