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 /**
  28  * A query action to enumerate the recent changes that were done to the wiki.
  29  * Various filters are supported.
  30  *
  31  * @ingroup API
  32  */
  33 class ApiQueryRecentChanges extends ApiQueryGeneratorBase {
  34
  35         public function __construct( $query, $moduleName ) {
  36                 parent::__construct( $query, $moduleName, 'rc' );
  37         }
  38
  39         private $fld_comment = false, $fld_parsedcomment = false, $fld_user = false, $fld_userid = false,
  40                 $fld_flags = false, $fld_timestamp = false, $fld_title = false, $fld_ids = false,
  41                 $fld_sizes = false, $fld_redirect = false, $fld_patrolled = false, $fld_loginfo = false,
  42                 $fld_tags = false, $fld_sha1 = false, $token = array();
  43
  44         private $tokenFunctions;
  45
  46         /**
  47          * Get an array mapping token names to their handler functions.
  48          * The prototype for a token function is func($pageid, $title, $rc)
  49          * it should return a token or false (permission denied)
  50          * @return array array(tokenname => function)
  51          */
  52         protected function getTokenFunctions() {
  53                 // Don't call the hooks twice
  54                 if ( isset( $this->tokenFunctions ) ) {
  55                         return $this->tokenFunctions;
  56                 }
  57
  58                 // If we're in JSON callback mode, no tokens can be obtained
  59                 if ( !is_null( $this->getMain()->getRequest()->getVal( 'callback' ) ) ) {
  60                         return array();
  61                 }
  62
  63                 $this->tokenFunctions = array(
  64                         'patrol' => array( 'ApiQueryRecentChanges', 'getPatrolToken' )
  65                 );
  66                 wfRunHooks( 'APIQueryRecentChangesTokens', array( &$this->tokenFunctions ) );
  67
  68                 return $this->tokenFunctions;
  69         }
  70
  71         /**
  72          * @param  $pageid
  73          * @param  $title
  74          * @param $rc RecentChange (optional)
  75          * @return bool|string
  76          */
  77         public static function getPatrolToken( $pageid, $title, $rc = null ) {
  78                 global $wgUser;
  79
  80                 $validTokenUser = false;
  81
  82                 if ( $rc ) {
  83                         if ( ( $wgUser->useRCPatrol() && $rc->getAttribute( 'rc_type' ) == RC_EDIT ) ||
  84                                 ( $wgUser->useNPPatrol() && $rc->getAttribute( 'rc_type' ) == RC_NEW )
  85                         ) {
  86                                 $validTokenUser = true;
  87                         }
  88                 } elseif ( $wgUser->useRCPatrol() || $wgUser->useNPPatrol() ) {
  89                         $validTokenUser = true;
  90                 }
  91
  92                 if ( $validTokenUser ) {
  93                         // The patrol token is always the same, let's exploit that
  94                         static $cachedPatrolToken = null;
  95
  96                         if ( is_null( $cachedPatrolToken ) ) {
  97                                 $cachedPatrolToken = $wgUser->getEditToken( 'patrol' );
  98                         }
  99
 100                         return $cachedPatrolToken;
 101                 }
 102
 103                 return false;
 104         }
 105
 106         /**
 107          * Sets internal state to include the desired properties in the output.
 108          * @param array $prop associative array of properties, only keys are used here
 109          */
 110         public function initProperties( $prop ) {
 111                 $this->fld_comment = isset( $prop['comment'] );
 112                 $this->fld_parsedcomment = isset( $prop['parsedcomment'] );
 113                 $this->fld_user = isset( $prop['user'] );
 114                 $this->fld_userid = isset( $prop['userid'] );
 115                 $this->fld_flags = isset( $prop['flags'] );
 116                 $this->fld_timestamp = isset( $prop['timestamp'] );
 117                 $this->fld_title = isset( $prop['title'] );
 118                 $this->fld_ids = isset( $prop['ids'] );
 119                 $this->fld_sizes = isset( $prop['sizes'] );
 120                 $this->fld_redirect = isset( $prop['redirect'] );
 121                 $this->fld_patrolled = isset( $prop['patrolled'] );
 122                 $this->fld_loginfo = isset( $prop['loginfo'] );
 123                 $this->fld_tags = isset( $prop['tags'] );
 124                 $this->fld_sha1 = isset( $prop['sha1'] );
 125         }
 126
 127         public function execute() {
 128                 $this->run();
 129         }
 130
 131         public function executeGenerator( $resultPageSet ) {
 132                 $this->run( $resultPageSet );
 133         }
 134
 135         /**
 136          * Generates and outputs the result of this query based upon the provided parameters.
 137          *
 138          * @param $resultPageSet ApiPageSet
 139          */
 140         public function run( $resultPageSet = null ) {
 141                 $user = $this->getUser();
 142                 /* Get the parameters of the request. */
 143                 $params = $this->extractRequestParams();
 144
 145                 /* Build our basic query. Namely, something along the lines of:
 146                  * SELECT * FROM recentchanges WHERE rc_timestamp > $start
 147                  *              AND rc_timestamp < $end AND rc_namespace = $namespace
 148                  *              AND rc_deleted = 0
 149                  */
 150                 $this->addTables( 'recentchanges' );
 151                 $index = array( 'recentchanges' => 'rc_timestamp' ); // May change
 152                 $this->addTimestampWhereRange( 'rc_timestamp', $params['dir'], $params['start'], $params['end'] );
 153
 154                 if ( !is_null( $params['continue'] ) ) {
 155                         $cont = explode( '|', $params['continue'] );
 156                         if ( count( $cont ) != 2 ) {
 157                                 $this->dieUsage( 'Invalid continue param. You should pass the ' .
 158                                         'original value returned by the previous query', '_badcontinue' );
 159                         }
 160
 161                         $timestamp = $this->getDB()->addQuotes( wfTimestamp( TS_MW, $cont[0] ) );
 162                         $id = intval( $cont[1] );
 163                         $op = $params['dir'] === 'older' ? '<' : '>';
 164
 165                         $this->addWhere(
 166                                 "rc_timestamp $op $timestamp OR " .
 167                                 "(rc_timestamp = $timestamp AND " .
 168                                 "rc_id $op= $id)"
 169                         );
 170                 }
 171
 172                 $order = $params['dir'] === 'older' ? 'DESC' : 'ASC';
 173                 $this->addOption( 'ORDER BY', array(
 174                         "rc_timestamp $order",
 175                         "rc_id $order",
 176                 ) );
 177
 178                 $this->addWhereFld( 'rc_namespace', $params['namespace'] );
 179                 $this->addWhereFld( 'rc_deleted', 0 );
 180
 181                 if ( !is_null( $params['type'] ) ) {
 182                         $this->addWhereFld( 'rc_type', $this->parseRCType( $params['type'] ) );
 183                 }
 184
 185                 if ( !is_null( $params['show'] ) ) {
 186                         $show = array_flip( $params['show'] );
 187
 188                         /* Check for conflicting parameters. */
 189                         if ( ( isset( $show['minor'] ) && isset( $show['!minor'] ) )
 190                                 || ( isset( $show['bot'] ) && isset( $show['!bot'] ) )
 191                                 || ( isset( $show['anon'] ) && isset( $show['!anon'] ) )
 192                                 || ( isset( $show['redirect'] ) && isset( $show['!redirect'] ) )
 193                                 || ( isset( $show['patrolled'] ) && isset( $show['!patrolled'] ) )
 194                                 || ( isset( $show['patrolled'] ) && isset( $show['unpatrolled'] ) )
 195                                 || ( isset( $show['!patrolled'] ) && isset( $show['unpatrolled'] ) )
 196                         ) {
 197                                 $this->dieUsageMsg( 'show' );
 198                         }
 199
 200                         // Check permissions
 201                         if ( isset( $show['patrolled'] )
 202                                 || isset( $show['!patrolled'] )
 203                                 || isset( $show['unpatrolled'] )
 204                         ) {
 205                                 if ( !$user->useRCPatrol() && !$user->useNPPatrol() ) {
 206                                         $this->dieUsage(
 207                                                 'You need the patrol right to request the patrolled flag',
 208                                                 'permissiondenied'
 209                                         );
 210                                 }
 211                         }
 212
 213                         /* Add additional conditions to query depending upon parameters. */
 214                         $this->addWhereIf( 'rc_minor = 0', isset( $show['!minor'] ) );
 215                         $this->addWhereIf( 'rc_minor != 0', isset( $show['minor'] ) );
 216                         $this->addWhereIf( 'rc_bot = 0', isset( $show['!bot'] ) );
 217                         $this->addWhereIf( 'rc_bot != 0', isset( $show['bot'] ) );
 218                         $this->addWhereIf( 'rc_user = 0', isset( $show['anon'] ) );
 219                         $this->addWhereIf( 'rc_user != 0', isset( $show['!anon'] ) );
 220                         $this->addWhereIf( 'rc_patrolled = 0', isset( $show['!patrolled'] ) );
 221                         $this->addWhereIf( 'rc_patrolled != 0', isset( $show['patrolled'] ) );
 222                         $this->addWhereIf( 'page_is_redirect = 1', isset( $show['redirect'] ) );
 223
 224                         if ( isset( $show['unpatrolled'] ) ) {
 225                                 // See ChangesList:isUnpatrolled
 226                                 if ( $user->useRCPatrol() ) {
 227                                         $this->addWhere( 'rc_patrolled = 0' );
 228                                 } elseif ( $user->useNPPatrol() ) {
 229                                         $this->addWhere( 'rc_patrolled = 0' );
 230                                         $this->addWhereFld( 'rc_type', RC_NEW );
 231                                 }
 232                         }
 233
 234                         // Don't throw log entries out the window here
 235                         $this->addWhereIf(
 236                                 'page_is_redirect = 0 OR page_is_redirect IS NULL',
 237                                 isset( $show['!redirect'] )
 238                         );
 239                 }
 240
 241                 if ( !is_null( $params['user'] ) && !is_null( $params['excludeuser'] ) ) {
 242                         $this->dieUsage( 'user and excludeuser cannot be used together', 'user-excludeuser' );
 243                 }
 244
 245                 if ( !is_null( $params['user'] ) ) {
 246                         $this->addWhereFld( 'rc_user_text', $params['user'] );
 247                         $index['recentchanges'] = 'rc_user_text';
 248                 }
 249
 250                 if ( !is_null( $params['excludeuser'] ) ) {
 251                         // We don't use the rc_user_text index here because
 252                         // * it would require us to sort by rc_user_text before rc_timestamp
 253                         // * the != condition doesn't throw out too many rows anyway
 254                         $this->addWhere( 'rc_user_text != ' . $this->getDB()->addQuotes( $params['excludeuser'] ) );
 255                 }
 256
 257                 /* Add the fields we're concerned with to our query. */
 258                 $this->addFields( array(
 259                         'rc_timestamp',
 260                         'rc_namespace',
 261                         'rc_title',
 262                         'rc_cur_id',
 263                         'rc_type',
 264                         'rc_deleted'
 265                 ) );
 266
 267                 $showRedirects = false;
 268                 /* Determine what properties we need to display. */
 269                 if ( !is_null( $params['prop'] ) ) {
 270                         $prop = array_flip( $params['prop'] );
 271
 272                         /* Set up internal members based upon params. */
 273                         $this->initProperties( $prop );
 274
 275                         if ( $this->fld_patrolled && !$user->useRCPatrol() && !$user->useNPPatrol() ) {
 276                                 $this->dieUsage(
 277                                         'You need the patrol right to request the patrolled flag',
 278                                         'permissiondenied'
 279                                 );
 280                         }
 281
 282                         $this->addFields( 'rc_id' );
 283                         /* Add fields to our query if they are specified as a needed parameter. */
 284                         $this->addFieldsIf( array( 'rc_this_oldid', 'rc_last_oldid' ), $this->fld_ids );
 285                         $this->addFieldsIf( 'rc_comment', $this->fld_comment || $this->fld_parsedcomment );
 286                         $this->addFieldsIf( 'rc_user', $this->fld_user );
 287                         $this->addFieldsIf( 'rc_user_text', $this->fld_user || $this->fld_userid );
 288                         $this->addFieldsIf( array( 'rc_minor', 'rc_type', 'rc_bot' ), $this->fld_flags );
 289                         $this->addFieldsIf( array( 'rc_old_len', 'rc_new_len' ), $this->fld_sizes );
 290                         $this->addFieldsIf( 'rc_patrolled', $this->fld_patrolled );
 291                         $this->addFieldsIf(
 292                                 array( 'rc_logid', 'rc_log_type', 'rc_log_action', 'rc_params' ),
 293                                 $this->fld_loginfo
 294                         );
 295                         $showRedirects = $this->fld_redirect || isset( $show['redirect'] )
 296                                 || isset( $show['!redirect'] );
 297                 }
 298
 299                 if ( $this->fld_tags ) {
 300                         $this->addTables( 'tag_summary' );
 301                         $this->addJoinConds( array( 'tag_summary' => array( 'LEFT JOIN', array( 'rc_id=ts_rc_id' ) ) ) );
 302                         $this->addFields( 'ts_tags' );
 303                 }
 304
 305                 if ( $this->fld_sha1 ) {
 306                         $this->addTables( 'revision' );
 307                         $this->addJoinConds( array( 'revision' => array( 'LEFT JOIN',
 308                                 array( 'rc_this_oldid=rev_id' ) ) ) );
 309                         $this->addFields( array( 'rev_sha1', 'rev_deleted' ) );
 310                 }
 311
 312                 if ( $params['toponly'] || $showRedirects ) {
 313                         $this->addTables( 'page' );
 314                         $this->addJoinConds( array( 'page' => array( 'LEFT JOIN',
 315                                 array( 'rc_namespace=page_namespace', 'rc_title=page_title' ) ) ) );
 316                         $this->addFields( 'page_is_redirect' );
 317
 318                         if ( $params['toponly'] ) {
 319                                 $this->addWhere( 'rc_this_oldid = page_latest' );
 320                         }
 321                 }
 322
 323                 if ( !is_null( $params['tag'] ) ) {
 324                         $this->addTables( 'change_tag' );
 325                         $this->addJoinConds( array( 'change_tag' => array( 'INNER JOIN', array( 'rc_id=ct_rc_id' ) ) ) );
 326                         $this->addWhereFld( 'ct_tag', $params['tag'] );
 327                 }
 328
 329                 $this->token = $params['token'];
 330                 $this->addOption( 'LIMIT', $params['limit'] + 1 );
 331                 $this->addOption( 'USE INDEX', $index );
 332
 333                 $count = 0;
 334                 /* Perform the actual query. */
 335                 $res = $this->select( __METHOD__ );
 336
 337                 $titles = array();
 338
 339                 $result = $this->getResult();
 340
 341                 /* Iterate through the rows, adding data extracted from them to our query result. */
 342                 foreach ( $res as $row ) {
 343                         if ( ++$count > $params['limit'] ) {
 344                                 // We've reached the one extra which shows that there are
 345                                 // additional pages to be had. Stop here...
 346                                 $this->setContinueEnumParameter(
 347                                         'continue',
 348                                         wfTimestamp( TS_ISO_8601, $row->rc_timestamp ) . '|' . $row->rc_id
 349                                 );
 350                                 break;
 351                         }
 352
 353                         if ( is_null( $resultPageSet ) ) {
 354                                 /* Extract the data from a single row. */
 355                                 $vals = $this->extractRowInfo( $row );
 356
 357                                 /* Add that row's data to our final output. */
 358                                 if ( !$vals ) {
 359                                         continue;
 360                                 }
 361                                 $fit = $result->addValue( array( 'query', $this->getModuleName() ), null, $vals );
 362                                 if ( !$fit ) {
 363                                         $this->setContinueEnumParameter(
 364                                                 'continue',
 365                                                 wfTimestamp( TS_ISO_8601, $row->rc_timestamp ) . '|' . $row->rc_id
 366                                         );
 367                                         break;
 368                                 }
 369                         } else {
 370                                 $titles[] = Title::makeTitle( $row->rc_namespace, $row->rc_title );
 371                         }
 372                 }
 373
 374                 if ( is_null( $resultPageSet ) ) {
 375                         /* Format the result */
 376                         $result->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'rc' );
 377                 } else {
 378                         $resultPageSet->populateFromTitles( $titles );
 379                 }
 380         }
 381
 382         /**
 383          * Extracts from a single sql row the data needed to describe one recent change.
 384          *
 385          * @param mixed $row The row from which to extract the data.
 386          * @return array An array mapping strings (descriptors) to their respective string values.
 387          * @access public
 388          */
 389         public function extractRowInfo( $row ) {
 390                 /* Determine the title of the page that has been changed. */
 391                 $title = Title::makeTitle( $row->rc_namespace, $row->rc_title );
 392
 393                 /* Our output data. */
 394                 $vals = array();
 395
 396                 $type = intval( $row->rc_type );
 397
 398                 /* Determine what kind of change this was. */
 399                 switch ( $type ) {
 400                         case RC_EDIT:
 401                                 $vals['type'] = 'edit';
 402                                 break;
 403                         case RC_NEW:
 404                                 $vals['type'] = 'new';
 405                                 break;
 406                         case RC_MOVE:
 407                                 $vals['type'] = 'move';
 408                                 break;
 409                         case RC_LOG:
 410                                 $vals['type'] = 'log';
 411                                 break;
 412                         case RC_EXTERNAL:
 413                                 $vals['type'] = 'external';
 414                                 break;
 415                         case RC_MOVE_OVER_REDIRECT:
 416                                 $vals['type'] = 'move over redirect';
 417                                 break;
 418                         default:
 419                                 $vals['type'] = $type;
 420                 }
 421
 422                 /* Create a new entry in the result for the title. */
 423                 if ( $this->fld_title ) {
 424                         ApiQueryBase::addTitleInfo( $vals, $title );
 425                 }
 426
 427                 /* Add ids, such as rcid, pageid, revid, and oldid to the change's info. */
 428                 if ( $this->fld_ids ) {
 429                         $vals['rcid'] = intval( $row->rc_id );
 430                         $vals['pageid'] = intval( $row->rc_cur_id );
 431                         $vals['revid'] = intval( $row->rc_this_oldid );
 432                         $vals['old_revid'] = intval( $row->rc_last_oldid );
 433                 }
 434
 435                 /* Add user data and 'anon' flag, if use is anonymous. */
 436                 if ( $this->fld_user || $this->fld_userid ) {
 437
 438                         if ( $this->fld_user ) {
 439                                 $vals['user'] = $row->rc_user_text;
 440                         }
 441
 442                         if ( $this->fld_userid ) {
 443                                 $vals['userid'] = $row->rc_user;
 444                         }
 445
 446                         if ( !$row->rc_user ) {
 447                                 $vals['anon'] = '';
 448                         }
 449                 }
 450
 451                 /* Add flags, such as new, minor, bot. */
 452                 if ( $this->fld_flags ) {
 453                         if ( $row->rc_bot ) {
 454                                 $vals['bot'] = '';
 455                         }
 456                         if ( $row->rc_type == RC_NEW ) {
 457                                 $vals['new'] = '';
 458                         }
 459                         if ( $row->rc_minor ) {
 460                                 $vals['minor'] = '';
 461                         }
 462                 }
 463
 464                 /* Add sizes of each revision. (Only available on 1.10+) */
 465                 if ( $this->fld_sizes ) {
 466                         $vals['oldlen'] = intval( $row->rc_old_len );
 467                         $vals['newlen'] = intval( $row->rc_new_len );
 468                 }
 469
 470                 /* Add the timestamp. */
 471                 if ( $this->fld_timestamp ) {
 472                         $vals['timestamp'] = wfTimestamp( TS_ISO_8601, $row->rc_timestamp );
 473                 }
 474
 475                 /* Add edit summary / log summary. */
 476                 if ( $this->fld_comment && isset( $row->rc_comment ) ) {
 477                         $vals['comment'] = $row->rc_comment;
 478                 }
 479
 480                 if ( $this->fld_parsedcomment && isset( $row->rc_comment ) ) {
 481                         $vals['parsedcomment'] = Linker::formatComment( $row->rc_comment, $title );
 482                 }
 483
 484                 if ( $this->fld_redirect ) {
 485                         if ( $row->page_is_redirect ) {
 486                                 $vals['redirect'] = '';
 487                         }
 488                 }
 489
 490                 /* Add the patrolled flag */
 491                 if ( $this->fld_patrolled && $row->rc_patrolled == 1 ) {
 492                         $vals['patrolled'] = '';
 493                 }
 494
 495                 if ( $this->fld_patrolled && ChangesList::isUnpatrolled( $row, $this->getUser() ) ) {
 496                         $vals['unpatrolled'] = '';
 497                 }
 498
 499                 if ( $this->fld_loginfo && $row->rc_type == RC_LOG ) {
 500                         $vals['logid'] = intval( $row->rc_logid );
 501                         $vals['logtype'] = $row->rc_log_type;
 502                         $vals['logaction'] = $row->rc_log_action;
 503                         $logEntry = DatabaseLogEntry::newFromRow( (array)$row );
 504                         ApiQueryLogEvents::addLogParams(
 505                                 $this->getResult(),
 506                                 $vals,
 507                                 $logEntry->getParameters(),
 508                                 $logEntry->getType(),
 509                                 $logEntry->getSubtype(),
 510                                 $logEntry->getTimestamp()
 511                         );
 512                 }
 513
 514                 if ( $this->fld_tags ) {
 515                         if ( $row->ts_tags ) {
 516                                 $tags = explode( ',', $row->ts_tags );
 517                                 $this->getResult()->setIndexedTagName( $tags, 'tag' );
 518                                 $vals['tags'] = $tags;
 519                         } else {
 520                                 $vals['tags'] = array();
 521                         }
 522                 }
 523
 524                 if ( $this->fld_sha1 && $row->rev_sha1 !== null ) {
 525                         // The RevDel check should currently never pass due to the
 526                         // rc_deleted = 0 condition in the WHERE clause, but in case that
 527                         // ever changes we check it here too.
 528                         if ( $row->rev_deleted & Revision::DELETED_TEXT ) {
 529                                 $vals['sha1hidden'] = '';
 530                         } elseif ( $row->rev_sha1 !== '' ) {
 531                                 $vals['sha1'] = wfBaseConvert( $row->rev_sha1, 36, 16, 40 );
 532                         } else {
 533                                 $vals['sha1'] = '';
 534                         }
 535                 }
 536
 537                 if ( !is_null( $this->token ) ) {
 538                         $tokenFunctions = $this->getTokenFunctions();
 539                         foreach ( $this->token as $t ) {
 540                                 $val = call_user_func( $tokenFunctions[$t], $row->rc_cur_id,
 541                                         $title, RecentChange::newFromRow( $row ) );
 542                                 if ( $val === false ) {
 543                                         $this->setWarning( "Action '$t' is not allowed for the current user" );
 544                                 } else {
 545                                         $vals[$t . 'token'] = $val;
 546                                 }
 547                         }
 548                 }
 549
 550                 return $vals;
 551         }
 552
 553         private function parseRCType( $type ) {
 554                 if ( is_array( $type ) ) {
 555                         $retval = array();
 556                         foreach ( $type as $t ) {
 557                                 $retval[] = $this->parseRCType( $t );
 558                         }
 559
 560                         return $retval;
 561                 }
 562
 563                 switch ( $type ) {
 564                         case 'edit':
 565                                 return RC_EDIT;
 566                         case 'new':
 567                                 return RC_NEW;
 568                         case 'log':
 569                                 return RC_LOG;
 570                         case 'external':
 571                                 return RC_EXTERNAL;
 572                         default:
 573                                 ApiBase::dieDebug( __METHOD__, "Unknown type '$type'" );
 574                 }
 575         }
 576
 577         public function getCacheMode( $params ) {
 578                 if ( isset( $params['show'] ) ) {
 579                         foreach ( $params['show'] as $show ) {
 580                                 if ( $show === 'patrolled' || $show === '!patrolled' ) {
 581                                         return 'private';
 582                                 }
 583                         }
 584                 }
 585                 if ( isset( $params['token'] ) ) {
 586                         return 'private';
 587                 }
 588                 if ( !is_null( $params['prop'] ) && in_array( 'parsedcomment', $params['prop'] ) ) {
 589                         // formatComment() calls wfMessage() among other things
 590                         return 'anon-public-user-private';
 591                 }
 592
 593                 return 'public';
 594         }
 595
 596         public function getAllowedParams() {
 597                 return array(
 598                         'start' => array(
 599                                 ApiBase::PARAM_TYPE => 'timestamp'
 600                         ),
 601                         'end' => array(
 602                                 ApiBase::PARAM_TYPE => 'timestamp'
 603                         ),
 604                         'dir' => array(
 605                                 ApiBase::PARAM_DFLT => 'older',
 606                                 ApiBase::PARAM_TYPE => array(
 607                                         'newer',
 608                                         'older'
 609                                 )
 610                         ),
 611                         'namespace' => array(
 612                                 ApiBase::PARAM_ISMULTI => true,
 613                                 ApiBase::PARAM_TYPE => 'namespace'
 614                         ),
 615                         'user' => array(
 616                                 ApiBase::PARAM_TYPE => 'user'
 617                         ),
 618                         'excludeuser' => array(
 619                                 ApiBase::PARAM_TYPE => 'user'
 620                         ),
 621                         'tag' => null,
 622                         'prop' => array(
 623                                 ApiBase::PARAM_ISMULTI => true,
 624                                 ApiBase::PARAM_DFLT => 'title|timestamp|ids',
 625                                 ApiBase::PARAM_TYPE => array(
 626                                         'user',
 627                                         'userid',
 628                                         'comment',
 629                                         'parsedcomment',
 630                                         'flags',
 631                                         'timestamp',
 632                                         'title',
 633                                         'ids',
 634                                         'sizes',
 635                                         'redirect',
 636                                         'patrolled',
 637                                         'loginfo',
 638                                         'tags',
 639                                         'sha1',
 640                                 )
 641                         ),
 642                         'token' => array(
 643                                 ApiBase::PARAM_TYPE => array_keys( $this->getTokenFunctions() ),
 644                                 ApiBase::PARAM_ISMULTI => true
 645                         ),
 646                         'show' => array(
 647                                 ApiBase::PARAM_ISMULTI => true,
 648                                 ApiBase::PARAM_TYPE => array(
 649                                         'minor',
 650                                         '!minor',
 651                                         'bot',
 652                                         '!bot',
 653                                         'anon',
 654                                         '!anon',
 655                                         'redirect',
 656                                         '!redirect',
 657                                         'patrolled',
 658                                         '!patrolled',
 659                                         'unpatrolled'
 660                                 )
 661                         ),
 662                         'limit' => array(
 663                                 ApiBase::PARAM_DFLT => 10,
 664                                 ApiBase::PARAM_TYPE => 'limit',
 665                                 ApiBase::PARAM_MIN => 1,
 666                                 ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
 667                                 ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
 668                         ),
 669                         'type' => array(
 670                                 ApiBase::PARAM_ISMULTI => true,
 671                                 ApiBase::PARAM_TYPE => array(
 672                                         'edit',
 673                                         'external',
 674                                         'new',
 675                                         'log'
 676                                 )
 677                         ),
 678                         'toponly' => false,
 679                         'continue' => null,
 680                 );
 681         }
 682
 683         public function getParamDescription() {
 684                 $p = $this->getModulePrefix();
 685
 686                 return array(
 687                         'start' => 'The timestamp to start enumerating from',
 688                         'end' => 'The timestamp to end enumerating',
 689                         'dir' => $this->getDirectionDescription( $p ),
 690                         'namespace' => 'Filter log entries to only this namespace(s)',
 691                         'user' => 'Only list changes by this user',
 692                         'excludeuser' => 'Don\'t list changes by this user',
 693                         'prop' => array(
 694                                 'Include additional pieces of information',
 695                                 ' user           - Adds the user responsible for the edit and tags if they are an IP',
 696                                 ' userid         - Adds the user id responsible for the edit',
 697                                 ' comment        - Adds the comment for the edit',
 698                                 ' parsedcomment  - Adds the parsed comment for the edit',
 699                                 ' flags          - Adds flags for the edit',
 700                                 ' timestamp      - Adds timestamp of the edit',
 701                                 ' title          - Adds the page title of the edit',
 702                                 ' ids            - Adds the page ID, recent changes ID and the new and old revision ID',
 703                                 ' sizes          - Adds the new and old page length in bytes',
 704                                 ' redirect       - Tags edit if page is a redirect',
 705                                 ' patrolled      - Tags patrollable edits as being patrolled or unpatrolled',
 706                                 ' loginfo        - Adds log information (logid, logtype, etc) to log entries',
 707                                 ' tags           - Lists tags for the entry',
 708                                 ' sha1           - Adds the content checksum for entries associated with a revision',
 709                         ),
 710                         'token' => 'Which tokens to obtain for each change',
 711                         'show' => array(
 712                                 'Show only items that meet this criteria.',
 713                                 "For example, to see only minor edits done by logged-in users, set {$p}show=minor|!anon"
 714                         ),
 715                         'type' => 'Which types of changes to show',
 716                         'limit' => 'How many total changes to return',
 717                         'tag' => 'Only list changes tagged with this tag',
 718                         'toponly' => 'Only list changes which are the latest revision',
 719                         'continue' => 'When more results are available, use this to continue',
 720                 );
 721         }
 722
 723         public function getResultProperties() {
 724                 global $wgLogTypes;
 725                 $props = array(
 726                         '' => array(
 727                                 'type' => array(
 728                                         ApiBase::PROP_TYPE => array(
 729                                                 'edit',
 730                                                 'new',
 731                                                 'move',
 732                                                 'log',
 733                                                 'move over redirect'
 734                                         )
 735                                 )
 736                         ),
 737                         'title' => array(
 738                                 'ns' => 'namespace',
 739                                 'title' => 'string',
 740                                 'new_ns' => array(
 741                                         ApiBase::PROP_TYPE => 'namespace',
 742                                         ApiBase::PROP_NULLABLE => true
 743                                 ),
 744                                 'new_title' => array(
 745                                         ApiBase::PROP_TYPE => 'string',
 746                                         ApiBase::PROP_NULLABLE => true
 747                                 )
 748                         ),
 749                         'ids' => array(
 750                                 'rcid' => 'integer',
 751                                 'pageid' => 'integer',
 752                                 'revid' => 'integer',
 753                                 'old_revid' => 'integer'
 754                         ),
 755                         'user' => array(
 756                                 'user' => 'string',
 757                                 'anon' => 'boolean'
 758                         ),
 759                         'userid' => array(
 760                                 'userid' => 'integer',
 761                                 'anon' => 'boolean'
 762                         ),
 763                         'flags' => array(
 764                                 'bot' => 'boolean',
 765                                 'new' => 'boolean',
 766                                 'minor' => 'boolean'
 767                         ),
 768                         'sizes' => array(
 769                                 'oldlen' => 'integer',
 770                                 'newlen' => 'integer'
 771                         ),
 772                         'timestamp' => array(
 773                                 'timestamp' => 'timestamp'
 774                         ),
 775                         'comment' => array(
 776                                 'comment' => array(
 777                                         ApiBase::PROP_TYPE => 'string',
 778                                         ApiBase::PROP_NULLABLE => true
 779                                 )
 780                         ),
 781                         'parsedcomment' => array(
 782                                 'parsedcomment' => array(
 783                                         ApiBase::PROP_TYPE => 'string',
 784                                         ApiBase::PROP_NULLABLE => true
 785                                 )
 786                         ),
 787                         'redirect' => array(
 788                                 'redirect' => 'boolean'
 789                         ),
 790                         'patrolled' => array(
 791                                 'patrolled' => 'boolean',
 792                                 'unpatrolled' => 'boolean'
 793                         ),
 794                         'loginfo' => array(
 795                                 'logid' => array(
 796                                         ApiBase::PROP_TYPE => 'integer',
 797                                         ApiBase::PROP_NULLABLE => true
 798                                 ),
 799                                 'logtype' => array(
 800                                         ApiBase::PROP_TYPE => $wgLogTypes,
 801                                         ApiBase::PROP_NULLABLE => true
 802                                 ),
 803                                 'logaction' => array(
 804                                         ApiBase::PROP_TYPE => 'string',
 805                                         ApiBase::PROP_NULLABLE => true
 806                                 )
 807                         ),
 808                         'sha1' => array(
 809                                 'sha1' => array(
 810                                         ApiBase::PROP_TYPE => 'string',
 811                                         ApiBase::PROP_NULLABLE => true
 812                                 ),
 813                                 'sha1hidden' => array(
 814                                         ApiBase::PROP_TYPE => 'boolean',
 815                                         ApiBase::PROP_NULLABLE => true
 816                                 ),
 817                         ),
 818                 );
 819
 820                 self::addTokenProperties( $props, $this->getTokenFunctions() );
 821
 822                 return $props;
 823         }
 824
 825         public function getDescription() {
 826                 return 'Enumerate recent changes';
 827         }
 828
 829         public function getPossibleErrors() {
 830                 return array_merge( parent::getPossibleErrors(), array(
 831                         array( 'show' ),
 832                         array(
 833                                 'code' => 'permissiondenied',
 834                                 'info' => 'You need the patrol right to request the patrolled flag'
 835                         ),
 836                         array( 'code' => 'user-excludeuser', 'info' => 'user and excludeuser cannot be used together' ),
 837                 ) );
 838         }
 839
 840         public function getExamples() {
 841                 return array(
 842                         'api.php?action=query&list=recentchanges'
 843                 );
 844         }
 845
 846         public function getHelpUrls() {
 847                 return 'https://www.mediawiki.org/wiki/API:Recentchanges';
 848         }
 849 }