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( ApiQuery $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 = [];
  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          * @deprecated since 1.24
  51          * @return array Array(tokenname => function)
  52          */
  53         protected function getTokenFunctions() {
  54                 // Don't call the hooks twice
  55                 if ( isset( $this->tokenFunctions ) ) {
  56                         return $this->tokenFunctions;
  57                 }
  58
  59                 // If we're in a mode that breaks the same-origin policy, no tokens can
  60                 // be obtained
  61                 if ( $this->lacksSameOriginSecurity() ) {
  62                         return [];
  63                 }
  64
  65                 $this->tokenFunctions = [
  66                         'patrol' => [ 'ApiQueryRecentChanges', 'getPatrolToken' ]
  67                 ];
  68                 Hooks::run( 'APIQueryRecentChangesTokens', [ &$this->tokenFunctions ] );
  69
  70                 return $this->tokenFunctions;
  71         }
  72
  73         /**
  74          * @deprecated since 1.24
  75          * @param int $pageid
  76          * @param Title $title
  77          * @param RecentChange|null $rc
  78          * @return bool|string
  79          */
  80         public static function getPatrolToken( $pageid, $title, $rc = null ) {
  81                 global $wgUser;
  82
  83                 $validTokenUser = false;
  84
  85                 if ( $rc ) {
  86                         if ( ( $wgUser->useRCPatrol() && $rc->getAttribute( 'rc_type' ) == RC_EDIT ) ||
  87                                 ( $wgUser->useNPPatrol() && $rc->getAttribute( 'rc_type' ) == RC_NEW )
  88                         ) {
  89                                 $validTokenUser = true;
  90                         }
  91                 } elseif ( $wgUser->useRCPatrol() || $wgUser->useNPPatrol() ) {
  92                         $validTokenUser = true;
  93                 }
  94
  95                 if ( $validTokenUser ) {
  96                         // The patrol token is always the same, let's exploit that
  97                         static $cachedPatrolToken = null;
  98
  99                         if ( is_null( $cachedPatrolToken ) ) {
 100                                 $cachedPatrolToken = $wgUser->getEditToken( 'patrol' );
 101                         }
 102
 103                         return $cachedPatrolToken;
 104                 }
 105
 106                 return false;
 107         }
 108
 109         /**
 110          * Sets internal state to include the desired properties in the output.
 111          * @param array $prop Associative array of properties, only keys are used here
 112          */
 113         public function initProperties( $prop ) {
 114                 $this->fld_comment = isset( $prop['comment'] );
 115                 $this->fld_parsedcomment = isset( $prop['parsedcomment'] );
 116                 $this->fld_user = isset( $prop['user'] );
 117                 $this->fld_userid = isset( $prop['userid'] );
 118                 $this->fld_flags = isset( $prop['flags'] );
 119                 $this->fld_timestamp = isset( $prop['timestamp'] );
 120                 $this->fld_title = isset( $prop['title'] );
 121                 $this->fld_ids = isset( $prop['ids'] );
 122                 $this->fld_sizes = isset( $prop['sizes'] );
 123                 $this->fld_redirect = isset( $prop['redirect'] );
 124                 $this->fld_patrolled = isset( $prop['patrolled'] );
 125                 $this->fld_loginfo = isset( $prop['loginfo'] );
 126                 $this->fld_tags = isset( $prop['tags'] );
 127                 $this->fld_sha1 = isset( $prop['sha1'] );
 128         }
 129
 130         public function execute() {
 131                 $this->run();
 132         }
 133
 134         public function executeGenerator( $resultPageSet ) {
 135                 $this->run( $resultPageSet );
 136         }
 137
 138         /**
 139          * Generates and outputs the result of this query based upon the provided parameters.
 140          *
 141          * @param ApiPageSet $resultPageSet
 142          */
 143         public function run( $resultPageSet = null ) {
 144                 $user = $this->getUser();
 145                 /* Get the parameters of the request. */
 146                 $params = $this->extractRequestParams();
 147
 148                 /* Build our basic query. Namely, something along the lines of:
 149                  * SELECT * FROM recentchanges WHERE rc_timestamp > $start
 150                  *              AND rc_timestamp < $end AND rc_namespace = $namespace
 151                  */
 152                 $this->addTables( 'recentchanges' );
 153                 $index = [ 'recentchanges' => 'rc_timestamp' ]; // May change
 154                 $this->addTimestampWhereRange( 'rc_timestamp', $params['dir'], $params['start'], $params['end'] );
 155
 156                 if ( !is_null( $params['continue'] ) ) {
 157                         $cont = explode( '|', $params['continue'] );
 158                         $this->dieContinueUsageIf( count( $cont ) != 2 );
 159                         $db = $this->getDB();
 160                         $timestamp = $db->addQuotes( $db->timestamp( $cont[0] ) );
 161                         $id = intval( $cont[1] );
 162                         $this->dieContinueUsageIf( $id != $cont[1] );
 163                         $op = $params['dir'] === 'older' ? '<' : '>';
 164                         $this->addWhere(
 165                                 "rc_timestamp $op $timestamp OR " .
 166                                 "(rc_timestamp = $timestamp AND " .
 167                                 "rc_id $op= $id)"
 168                         );
 169                 }
 170
 171                 $order = $params['dir'] === 'older' ? 'DESC' : 'ASC';
 172                 $this->addOption( 'ORDER BY', [
 173                         "rc_timestamp $order",
 174                         "rc_id $order",
 175                 ] );
 176
 177                 $this->addWhereFld( 'rc_namespace', $params['namespace'] );
 178
 179                 if ( !is_null( $params['type'] ) ) {
 180                         try {
 181                                 $this->addWhereFld( 'rc_type', RecentChange::parseToRCType( $params['type'] ) );
 182                         } catch ( Exception $e ) {
 183                                 ApiBase::dieDebug( __METHOD__, $e->getMessage() );
 184                         }
 185                 }
 186
 187                 if ( !is_null( $params['show'] ) ) {
 188                         $show = array_flip( $params['show'] );
 189
 190                         /* Check for conflicting parameters. */
 191                         if ( ( isset( $show['minor'] ) && isset( $show['!minor'] ) )
 192                                 || ( isset( $show['bot'] ) && isset( $show['!bot'] ) )
 193                                 || ( isset( $show['anon'] ) && isset( $show['!anon'] ) )
 194                                 || ( isset( $show['redirect'] ) && isset( $show['!redirect'] ) )
 195                                 || ( isset( $show['patrolled'] ) && isset( $show['!patrolled'] ) )
 196                                 || ( isset( $show['patrolled'] ) && isset( $show['unpatrolled'] ) )
 197                                 || ( isset( $show['!patrolled'] ) && isset( $show['unpatrolled'] ) )
 198                         ) {
 199                                 $this->dieUsageMsg( 'show' );
 200                         }
 201
 202                         // Check permissions
 203                         if ( isset( $show['patrolled'] )
 204                                 || isset( $show['!patrolled'] )
 205                                 || isset( $show['unpatrolled'] )
 206                         ) {
 207                                 if ( !$user->useRCPatrol() && !$user->useNPPatrol() ) {
 208                                         $this->dieUsage(
 209                                                 'You need patrol or patrolmarks permission to request the patrolled flag',
 210                                                 'permissiondenied'
 211                                         );
 212                                 }
 213                         }
 214
 215                         /* Add additional conditions to query depending upon parameters. */
 216                         $this->addWhereIf( 'rc_minor = 0', isset( $show['!minor'] ) );
 217                         $this->addWhereIf( 'rc_minor != 0', isset( $show['minor'] ) );
 218                         $this->addWhereIf( 'rc_bot = 0', isset( $show['!bot'] ) );
 219                         $this->addWhereIf( 'rc_bot != 0', isset( $show['bot'] ) );
 220                         $this->addWhereIf( 'rc_user = 0', isset( $show['anon'] ) );
 221                         $this->addWhereIf( 'rc_user != 0', isset( $show['!anon'] ) );
 222                         $this->addWhereIf( 'rc_patrolled = 0', isset( $show['!patrolled'] ) );
 223                         $this->addWhereIf( 'rc_patrolled != 0', isset( $show['patrolled'] ) );
 224                         $this->addWhereIf( 'page_is_redirect = 1', isset( $show['redirect'] ) );
 225
 226                         if ( isset( $show['unpatrolled'] ) ) {
 227                                 // See ChangesList::isUnpatrolled
 228                                 if ( $user->useRCPatrol() ) {
 229                                         $this->addWhere( 'rc_patrolled = 0' );
 230                                 } elseif ( $user->useNPPatrol() ) {
 231                                         $this->addWhere( 'rc_patrolled = 0' );
 232                                         $this->addWhereFld( 'rc_type', RC_NEW );
 233                                 }
 234                         }
 235
 236                         // Don't throw log entries out the window here
 237                         $this->addWhereIf(
 238                                 'page_is_redirect = 0 OR page_is_redirect IS NULL',
 239                                 isset( $show['!redirect'] )
 240                         );
 241                 }
 242
 243                 if ( !is_null( $params['user'] ) && !is_null( $params['excludeuser'] ) ) {
 244                         $this->dieUsage( 'user and excludeuser cannot be used together', 'user-excludeuser' );
 245                 }
 246
 247                 if ( !is_null( $params['user'] ) ) {
 248                         $this->addWhereFld( 'rc_user_text', $params['user'] );
 249                         $index['recentchanges'] = 'rc_user_text';
 250                 }
 251
 252                 if ( !is_null( $params['excludeuser'] ) ) {
 253                         // We don't use the rc_user_text index here because
 254                         // * it would require us to sort by rc_user_text before rc_timestamp
 255                         // * the != condition doesn't throw out too many rows anyway
 256                         $this->addWhere( 'rc_user_text != ' . $this->getDB()->addQuotes( $params['excludeuser'] ) );
 257                 }
 258
 259                 /* Add the fields we're concerned with to our query. */
 260                 $this->addFields( [
 261                         'rc_id',
 262                         'rc_timestamp',
 263                         'rc_namespace',
 264                         'rc_title',
 265                         'rc_cur_id',
 266                         'rc_type',
 267                         'rc_deleted'
 268                 ] );
 269
 270                 $showRedirects = false;
 271                 /* Determine what properties we need to display. */
 272                 if ( !is_null( $params['prop'] ) ) {
 273                         $prop = array_flip( $params['prop'] );
 274
 275                         /* Set up internal members based upon params. */
 276                         $this->initProperties( $prop );
 277
 278                         if ( $this->fld_patrolled && !$user->useRCPatrol() && !$user->useNPPatrol() ) {
 279                                 $this->dieUsage(
 280                                         'You need patrol or patrolmarks permission to request the patrolled flag',
 281                                         'permissiondenied'
 282                                 );
 283                         }
 284
 285                         /* Add fields to our query if they are specified as a needed parameter. */
 286                         $this->addFieldsIf( [ 'rc_this_oldid', 'rc_last_oldid' ], $this->fld_ids );
 287                         $this->addFieldsIf( 'rc_comment', $this->fld_comment || $this->fld_parsedcomment );
 288                         $this->addFieldsIf( 'rc_user', $this->fld_user || $this->fld_userid );
 289                         $this->addFieldsIf( 'rc_user_text', $this->fld_user );
 290                         $this->addFieldsIf( [ 'rc_minor', 'rc_type', 'rc_bot' ], $this->fld_flags );
 291                         $this->addFieldsIf( [ 'rc_old_len', 'rc_new_len' ], $this->fld_sizes );
 292                         $this->addFieldsIf( [ 'rc_patrolled', 'rc_log_type' ], $this->fld_patrolled );
 293                         $this->addFieldsIf(
 294                                 [ 'rc_logid', 'rc_log_type', 'rc_log_action', 'rc_params' ],
 295                                 $this->fld_loginfo
 296                         );
 297                         $showRedirects = $this->fld_redirect || isset( $show['redirect'] )
 298                                 || isset( $show['!redirect'] );
 299                 }
 300                 $this->addFieldsIf( [ 'rc_this_oldid' ],
 301                         $resultPageSet && $params['generaterevisions'] );
 302
 303                 if ( $this->fld_tags ) {
 304                         $this->addTables( 'tag_summary' );
 305                         $this->addJoinConds( [ 'tag_summary' => [ 'LEFT JOIN', [ 'rc_id=ts_rc_id' ] ] ] );
 306                         $this->addFields( 'ts_tags' );
 307                 }
 308
 309                 if ( $this->fld_sha1 ) {
 310                         $this->addTables( 'revision' );
 311                         $this->addJoinConds( [ 'revision' => [ 'LEFT JOIN',
 312                                 [ 'rc_this_oldid=rev_id' ] ] ] );
 313                         $this->addFields( [ 'rev_sha1', 'rev_deleted' ] );
 314                 }
 315
 316                 if ( $params['toponly'] || $showRedirects ) {
 317                         $this->addTables( 'page' );
 318                         $this->addJoinConds( [ 'page' => [ 'LEFT JOIN',
 319                                 [ 'rc_namespace=page_namespace', 'rc_title=page_title' ] ] ] );
 320                         $this->addFields( 'page_is_redirect' );
 321
 322                         if ( $params['toponly'] ) {
 323                                 $this->addWhere( 'rc_this_oldid = page_latest' );
 324                         }
 325                 }
 326
 327                 if ( !is_null( $params['tag'] ) ) {
 328                         $this->addTables( 'change_tag' );
 329                         $this->addJoinConds( [ 'change_tag' => [ 'INNER JOIN', [ 'rc_id=ct_rc_id' ] ] ] );
 330                         $this->addWhereFld( 'ct_tag', $params['tag'] );
 331                 }
 332
 333                 // Paranoia: avoid brute force searches (bug 17342)
 334                 if ( !is_null( $params['user'] ) || !is_null( $params['excludeuser'] ) ) {
 335                         if ( !$user->isAllowed( 'deletedhistory' ) ) {
 336                                 $bitmask = Revision::DELETED_USER;
 337                         } elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
 338                                 $bitmask = Revision::DELETED_USER | Revision::DELETED_RESTRICTED;
 339                         } else {
 340                                 $bitmask = 0;
 341                         }
 342                         if ( $bitmask ) {
 343                                 $this->addWhere( $this->getDB()->bitAnd( 'rc_deleted', $bitmask ) . " != $bitmask" );
 344                         }
 345                 }
 346                 if ( $this->getRequest()->getCheck( 'namespace' ) ) {
 347                         // LogPage::DELETED_ACTION hides the affected page, too.
 348                         if ( !$user->isAllowed( 'deletedhistory' ) ) {
 349                                 $bitmask = LogPage::DELETED_ACTION;
 350                         } elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
 351                                 $bitmask = LogPage::DELETED_ACTION | LogPage::DELETED_RESTRICTED;
 352                         } else {
 353                                 $bitmask = 0;
 354                         }
 355                         if ( $bitmask ) {
 356                                 $this->addWhere( $this->getDB()->makeList( [
 357                                         'rc_type != ' . RC_LOG,
 358                                         $this->getDB()->bitAnd( 'rc_deleted', $bitmask ) . " != $bitmask",
 359                                 ], LIST_OR ) );
 360                         }
 361                 }
 362
 363                 $this->token = $params['token'];
 364                 $this->addOption( 'LIMIT', $params['limit'] + 1 );
 365                 $this->addOption( 'USE INDEX', $index );
 366
 367                 $count = 0;
 368                 /* Perform the actual query. */
 369                 $res = $this->select( __METHOD__ );
 370
 371                 $revids = [];
 372                 $titles = [];
 373
 374                 $result = $this->getResult();
 375
 376                 /* Iterate through the rows, adding data extracted from them to our query result. */
 377                 foreach ( $res as $row ) {
 378                         if ( ++$count > $params['limit'] ) {
 379                                 // We've reached the one extra which shows that there are
 380                                 // additional pages to be had. Stop here...
 381                                 $this->setContinueEnumParameter( 'continue', "$row->rc_timestamp|$row->rc_id" );
 382                                 break;
 383                         }
 384
 385                         if ( is_null( $resultPageSet ) ) {
 386                                 /* Extract the data from a single row. */
 387                                 $vals = $this->extractRowInfo( $row );
 388
 389                                 /* Add that row's data to our final output. */
 390                                 $fit = $result->addValue( [ 'query', $this->getModuleName() ], null, $vals );
 391                                 if ( !$fit ) {
 392                                         $this->setContinueEnumParameter( 'continue', "$row->rc_timestamp|$row->rc_id" );
 393                                         break;
 394                                 }
 395                         } elseif ( $params['generaterevisions'] ) {
 396                                 $revid = (int)$row->rc_this_oldid;
 397                                 if ( $revid > 0 ) {
 398                                         $revids[] = $revid;
 399                                 }
 400                         } else {
 401                                 $titles[] = Title::makeTitle( $row->rc_namespace, $row->rc_title );
 402                         }
 403                 }
 404
 405                 if ( is_null( $resultPageSet ) ) {
 406                         /* Format the result */
 407                         $result->addIndexedTagName( [ 'query', $this->getModuleName() ], 'rc' );
 408                 } elseif ( $params['generaterevisions'] ) {
 409                         $resultPageSet->populateFromRevisionIDs( $revids );
 410                 } else {
 411                         $resultPageSet->populateFromTitles( $titles );
 412                 }
 413         }
 414
 415         /**
 416          * Extracts from a single sql row the data needed to describe one recent change.
 417          *
 418          * @param stdClass $row The row from which to extract the data.
 419          * @return array An array mapping strings (descriptors) to their respective string values.
 420          * @access public
 421          */
 422         public function extractRowInfo( $row ) {
 423                 /* Determine the title of the page that has been changed. */
 424                 $title = Title::makeTitle( $row->rc_namespace, $row->rc_title );
 425                 $user = $this->getUser();
 426
 427                 /* Our output data. */
 428                 $vals = [];
 429
 430                 $type = intval( $row->rc_type );
 431                 $vals['type'] = RecentChange::parseFromRCType( $type );
 432
 433                 $anyHidden = false;
 434
 435                 /* Create a new entry in the result for the title. */
 436                 if ( $this->fld_title || $this->fld_ids ) {
 437                         if ( $type === RC_LOG && ( $row->rc_deleted & LogPage::DELETED_ACTION ) ) {
 438                                 $vals['actionhidden'] = true;
 439                                 $anyHidden = true;
 440                         }
 441                         if ( $type !== RC_LOG ||
 442                                 LogEventsList::userCanBitfield( $row->rc_deleted, LogPage::DELETED_ACTION, $user )
 443                         ) {
 444                                 if ( $this->fld_title ) {
 445                                         ApiQueryBase::addTitleInfo( $vals, $title );
 446                                 }
 447                                 if ( $this->fld_ids ) {
 448                                         $vals['pageid'] = intval( $row->rc_cur_id );
 449                                         $vals['revid'] = intval( $row->rc_this_oldid );
 450                                         $vals['old_revid'] = intval( $row->rc_last_oldid );
 451                                 }
 452                         }
 453                 }
 454
 455                 if ( $this->fld_ids ) {
 456                         $vals['rcid'] = intval( $row->rc_id );
 457                 }
 458
 459                 /* Add user data and 'anon' flag, if user is anonymous. */
 460                 if ( $this->fld_user || $this->fld_userid ) {
 461                         if ( $row->rc_deleted & Revision::DELETED_USER ) {
 462                                 $vals['userhidden'] = true;
 463                                 $anyHidden = true;
 464                         }
 465                         if ( Revision::userCanBitfield( $row->rc_deleted, Revision::DELETED_USER, $user ) ) {
 466                                 if ( $this->fld_user ) {
 467                                         $vals['user'] = $row->rc_user_text;
 468                                 }
 469
 470                                 if ( $this->fld_userid ) {
 471                                         $vals['userid'] = (int)$row->rc_user;
 472                                 }
 473
 474                                 if ( !$row->rc_user ) {
 475                                         $vals['anon'] = true;
 476                                 }
 477                         }
 478                 }
 479
 480                 /* Add flags, such as new, minor, bot. */
 481                 if ( $this->fld_flags ) {
 482                         $vals['bot'] = (bool)$row->rc_bot;
 483                         $vals['new'] = $row->rc_type == RC_NEW;
 484                         $vals['minor'] = (bool)$row->rc_minor;
 485                 }
 486
 487                 /* Add sizes of each revision. (Only available on 1.10+) */
 488                 if ( $this->fld_sizes ) {
 489                         $vals['oldlen'] = intval( $row->rc_old_len );
 490                         $vals['newlen'] = intval( $row->rc_new_len );
 491                 }
 492
 493                 /* Add the timestamp. */
 494                 if ( $this->fld_timestamp ) {
 495                         $vals['timestamp'] = wfTimestamp( TS_ISO_8601, $row->rc_timestamp );
 496                 }
 497
 498                 /* Add edit summary / log summary. */
 499                 if ( $this->fld_comment || $this->fld_parsedcomment ) {
 500                         if ( $row->rc_deleted & Revision::DELETED_COMMENT ) {
 501                                 $vals['commenthidden'] = true;
 502                                 $anyHidden = true;
 503                         }
 504                         if ( Revision::userCanBitfield( $row->rc_deleted, Revision::DELETED_COMMENT, $user ) ) {
 505                                 if ( $this->fld_comment && isset( $row->rc_comment ) ) {
 506                                         $vals['comment'] = $row->rc_comment;
 507                                 }
 508
 509                                 if ( $this->fld_parsedcomment && isset( $row->rc_comment ) ) {
 510                                         $vals['parsedcomment'] = Linker::formatComment( $row->rc_comment, $title );
 511                                 }
 512                         }
 513                 }
 514
 515                 if ( $this->fld_redirect ) {
 516                         $vals['redirect'] = (bool)$row->page_is_redirect;
 517                 }
 518
 519                 /* Add the patrolled flag */
 520                 if ( $this->fld_patrolled ) {
 521                         $vals['patrolled'] = $row->rc_patrolled == 1;
 522                         $vals['unpatrolled'] = ChangesList::isUnpatrolled( $row, $user );
 523                 }
 524
 525                 if ( $this->fld_loginfo && $row->rc_type == RC_LOG ) {
 526                         if ( $row->rc_deleted & LogPage::DELETED_ACTION ) {
 527                                 $vals['actionhidden'] = true;
 528                                 $anyHidden = true;
 529                         }
 530                         if ( LogEventsList::userCanBitfield( $row->rc_deleted, LogPage::DELETED_ACTION, $user ) ) {
 531                                 $vals['logid'] = intval( $row->rc_logid );
 532                                 $vals['logtype'] = $row->rc_log_type;
 533                                 $vals['logaction'] = $row->rc_log_action;
 534                                 $vals['logparams'] = LogFormatter::newFromRow( $row )->formatParametersForApi();
 535                         }
 536                 }
 537
 538                 if ( $this->fld_tags ) {
 539                         if ( $row->ts_tags ) {
 540                                 $tags = explode( ',', $row->ts_tags );
 541                                 ApiResult::setIndexedTagName( $tags, 'tag' );
 542                                 $vals['tags'] = $tags;
 543                         } else {
 544                                 $vals['tags'] = [];
 545                         }
 546                 }
 547
 548                 if ( $this->fld_sha1 && $row->rev_sha1 !== null ) {
 549                         if ( $row->rev_deleted & Revision::DELETED_TEXT ) {
 550                                 $vals['sha1hidden'] = true;
 551                                 $anyHidden = true;
 552                         }
 553                         if ( Revision::userCanBitfield( $row->rev_deleted, Revision::DELETED_TEXT, $user ) ) {
 554                                 if ( $row->rev_sha1 !== '' ) {
 555                                         $vals['sha1'] = Wikimedia\base_convert( $row->rev_sha1, 36, 16, 40 );
 556                                 } else {
 557                                         $vals['sha1'] = '';
 558                                 }
 559                         }
 560                 }
 561
 562                 if ( !is_null( $this->token ) ) {
 563                         $tokenFunctions = $this->getTokenFunctions();
 564                         foreach ( $this->token as $t ) {
 565                                 $val = call_user_func( $tokenFunctions[$t], $row->rc_cur_id,
 566                                         $title, RecentChange::newFromRow( $row ) );
 567                                 if ( $val === false ) {
 568                                         $this->setWarning( "Action '$t' is not allowed for the current user" );
 569                                 } else {
 570                                         $vals[$t . 'token'] = $val;
 571                                 }
 572                         }
 573                 }
 574
 575                 if ( $anyHidden && ( $row->rc_deleted & Revision::DELETED_RESTRICTED ) ) {
 576                         $vals['suppressed'] = true;
 577                 }
 578
 579                 return $vals;
 580         }
 581
 582         public function getCacheMode( $params ) {
 583                 if ( isset( $params['show'] ) ) {
 584                         foreach ( $params['show'] as $show ) {
 585                                 if ( $show === 'patrolled' || $show === '!patrolled' ) {
 586                                         return 'private';
 587                                 }
 588                         }
 589                 }
 590                 if ( isset( $params['token'] ) ) {
 591                         return 'private';
 592                 }
 593                 if ( $this->userCanSeeRevDel() ) {
 594                         return 'private';
 595                 }
 596                 if ( !is_null( $params['prop'] ) && in_array( 'parsedcomment', $params['prop'] ) ) {
 597                         // formatComment() calls wfMessage() among other things
 598                         return 'anon-public-user-private';
 599                 }
 600
 601                 return 'public';
 602         }
 603
 604         public function getAllowedParams() {
 605                 return [
 606                         'start' => [
 607                                 ApiBase::PARAM_TYPE => 'timestamp'
 608                         ],
 609                         'end' => [
 610                                 ApiBase::PARAM_TYPE => 'timestamp'
 611                         ],
 612                         'dir' => [
 613                                 ApiBase::PARAM_DFLT => 'older',
 614                                 ApiBase::PARAM_TYPE => [
 615                                         'newer',
 616                                         'older'
 617                                 ],
 618                                 ApiBase::PARAM_HELP_MSG => 'api-help-param-direction',
 619                         ],
 620                         'namespace' => [
 621                                 ApiBase::PARAM_ISMULTI => true,
 622                                 ApiBase::PARAM_TYPE => 'namespace'
 623                         ],
 624                         'user' => [
 625                                 ApiBase::PARAM_TYPE => 'user'
 626                         ],
 627                         'excludeuser' => [
 628                                 ApiBase::PARAM_TYPE => 'user'
 629                         ],
 630                         'tag' => null,
 631                         'prop' => [
 632                                 ApiBase::PARAM_ISMULTI => true,
 633                                 ApiBase::PARAM_DFLT => 'title|timestamp|ids',
 634                                 ApiBase::PARAM_TYPE => [
 635                                         'user',
 636                                         'userid',
 637                                         'comment',
 638                                         'parsedcomment',
 639                                         'flags',
 640                                         'timestamp',
 641                                         'title',
 642                                         'ids',
 643                                         'sizes',
 644                                         'redirect',
 645                                         'patrolled',
 646                                         'loginfo',
 647                                         'tags',
 648                                         'sha1',
 649                                 ],
 650                                 ApiBase::PARAM_HELP_MSG_PER_VALUE => [],
 651                         ],
 652                         'token' => [
 653                                 ApiBase::PARAM_DEPRECATED => true,
 654                                 ApiBase::PARAM_TYPE => array_keys( $this->getTokenFunctions() ),
 655                                 ApiBase::PARAM_ISMULTI => true
 656                         ],
 657                         'show' => [
 658                                 ApiBase::PARAM_ISMULTI => true,
 659                                 ApiBase::PARAM_TYPE => [
 660                                         'minor',
 661                                         '!minor',
 662                                         'bot',
 663                                         '!bot',
 664                                         'anon',
 665                                         '!anon',
 666                                         'redirect',
 667                                         '!redirect',
 668                                         'patrolled',
 669                                         '!patrolled',
 670                                         'unpatrolled'
 671                                 ]
 672                         ],
 673                         'limit' => [
 674                                 ApiBase::PARAM_DFLT => 10,
 675                                 ApiBase::PARAM_TYPE => 'limit',
 676                                 ApiBase::PARAM_MIN => 1,
 677                                 ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
 678                                 ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
 679                         ],
 680                         'type' => [
 681                                 ApiBase::PARAM_DFLT => 'edit|new|log|categorize',
 682                                 ApiBase::PARAM_ISMULTI => true,
 683                                 ApiBase::PARAM_TYPE => RecentChange::getChangeTypes()
 684                         ],
 685                         'toponly' => false,
 686                         'continue' => [
 687                                 ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
 688                         ],
 689                         'generaterevisions' => false,
 690                 ];
 691         }
 692
 693         protected function getExamplesMessages() {
 694                 return [
 695                         'action=query&list=recentchanges'
 696                                 => 'apihelp-query+recentchanges-example-simple',
 697                         'action=query&generator=recentchanges&grcshow=!patrolled&prop=info'
 698                                 => 'apihelp-query+recentchanges-example-generator',
 699                 ];
 700         }
 701
 702         public function getHelpUrls() {
 703                 return 'https://www.mediawiki.org/wiki/API:Recentchanges';
 704         }
 705 }