includes/api/ApiQueryUserContribs.php

   1 <?php
   2 /**
   3  * Copyright © 2006 Yuri Astrakhan "<Firstname><Lastname>@gmail.com"
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  */
  22
  23 use MediaWiki\MediaWikiServices;
  24 use MediaWiki\Revision\RevisionRecord;
  25 use MediaWiki\Storage\NameTableAccessException;
  26
  27 /**
  28  * This query action adds a list of a specified user's contributions to the output.
  29  *
  30  * @ingroup API
  31  */
  32 class ApiQueryUserContribs extends ApiQueryBase {
  33
  34         public function __construct( ApiQuery $query, $moduleName ) {
  35                 parent::__construct( $query, $moduleName, 'uc' );
  36         }
  37
  38         private $params, $multiUserMode, $orderBy, $parentLens, $commentStore;
  39
  40         private $fld_ids = false, $fld_title = false, $fld_timestamp = false,
  41                 $fld_comment = false, $fld_parsedcomment = false, $fld_flags = false,
  42                 $fld_patrolled = false, $fld_tags = false, $fld_size = false, $fld_sizediff = false;
  43
  44         public function execute() {
  45                 global $wgActorTableSchemaMigrationStage;
  46
  47                 // Parse some parameters
  48                 $this->params = $this->extractRequestParams();
  49
  50                 $this->commentStore = CommentStore::getStore();
  51
  52                 $prop = array_flip( $this->params['prop'] );
  53                 $this->fld_ids = isset( $prop['ids'] );
  54                 $this->fld_title = isset( $prop['title'] );
  55                 $this->fld_comment = isset( $prop['comment'] );
  56                 $this->fld_parsedcomment = isset( $prop['parsedcomment'] );
  57                 $this->fld_size = isset( $prop['size'] );
  58                 $this->fld_sizediff = isset( $prop['sizediff'] );
  59                 $this->fld_flags = isset( $prop['flags'] );
  60                 $this->fld_timestamp = isset( $prop['timestamp'] );
  61                 $this->fld_patrolled = isset( $prop['patrolled'] );
  62                 $this->fld_tags = isset( $prop['tags'] );
  63
  64                 // The main query may use the 'contributions' group DB, which can map to replica DBs
  65                 // with extra user based indexes or partioning by user. The additional metadata
  66                 // queries should use a regular replica DB since the lookup pattern is not all by user.
  67                 $dbSecondary = $this->getDB(); // any random replica DB
  68
  69                 $sort = ( $this->params['dir'] == 'newer' ? '' : ' DESC' );
  70                 $op = ( $this->params['dir'] == 'older' ? '<' : '>' );
  71
  72                 // Create an Iterator that produces the UserIdentity objects we need, depending
  73                 // on which of the 'userprefix', 'userids', or 'user' params was
  74                 // specified.
  75                 $this->requireOnlyOneParameter( $this->params, 'userprefix', 'userids', 'user' );
  76                 if ( isset( $this->params['userprefix'] ) ) {
  77                         $this->multiUserMode = true;
  78                         $this->orderBy = 'name';
  79                         $fname = __METHOD__;
  80
  81                         // Because 'userprefix' might produce a huge number of users (e.g.
  82                         // a wiki with users "Test00000001" to "Test99999999"), use a
  83                         // generator with batched lookup and continuation.
  84                         $userIter = call_user_func( function () use ( $dbSecondary, $sort, $op, $fname ) {
  85                                 global $wgActorTableSchemaMigrationStage;
  86
  87                                 $fromName = false;
  88                                 if ( !is_null( $this->params['continue'] ) ) {
  89                                         $continue = explode( '|', $this->params['continue'] );
  90                                         $this->dieContinueUsageIf( count( $continue ) != 4 );
  91                                         $this->dieContinueUsageIf( $continue[0] !== 'name' );
  92                                         $fromName = $continue[1];
  93                                 }
  94                                 $like = $dbSecondary->buildLike( $this->params['userprefix'], $dbSecondary->anyString() );
  95
  96                                 $limit = 501;
  97
  98                                 do {
  99                                         $from = $fromName ? "$op= " . $dbSecondary->addQuotes( $fromName ) : false;
 100
 101                                         // For the new schema, pull from the actor table. For the
 102                                         // old, pull from rev_user.
 103                                         if ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_READ_NEW ) {
 104                                                 $res = $dbSecondary->select(
 105                                                         'actor',
 106                                                         [ 'actor_id', 'user_id' => 'COALESCE(actor_user,0)', 'user_name' => 'actor_name' ],
 107                                                         array_merge( [ "actor_name$like" ], $from ? [ "actor_name $from" ] : [] ),
 108                                                         $fname,
 109                                                         [ 'ORDER BY' => [ "user_name $sort" ], 'LIMIT' => $limit ]
 110                                                 );
 111                                         } else {
 112                                                 $res = $dbSecondary->select(
 113                                                         'revision',
 114                                                         [ 'actor_id' => 'NULL', 'user_id' => 'rev_user', 'user_name' => 'rev_user_text' ],
 115                                                         array_merge( [ "rev_user_text$like" ], $from ? [ "rev_user_text $from" ] : [] ),
 116                                                         $fname,
 117                                                         [ 'DISTINCT', 'ORDER BY' => [ "rev_user_text $sort" ], 'LIMIT' => $limit ]
 118                                                 );
 119                                         }
 120
 121                                         $count = 0;
 122                                         $fromName = false;
 123                                         foreach ( $res as $row ) {
 124                                                 if ( ++$count >= $limit ) {
 125                                                         $fromName = $row->user_name;
 126                                                         break;
 127                                                 }
 128                                                 yield User::newFromRow( $row );
 129                                         }
 130                                 } while ( $fromName !== false );
 131                         } );
 132                         // Do the actual sorting client-side, because otherwise
 133                         // prepareQuery might try to sort by actor and confuse everything.
 134                         $batchSize = 1;
 135                 } elseif ( isset( $this->params['userids'] ) ) {
 136                         if ( $this->params['userids'] === [] ) {
 137                                 $encParamName = $this->encodeParamName( 'userids' );
 138                                 $this->dieWithError( [ 'apierror-paramempty', $encParamName ], "paramempty_$encParamName" );
 139                         }
 140
 141                         $ids = [];
 142                         foreach ( $this->params['userids'] as $uid ) {
 143                                 if ( $uid <= 0 ) {
 144                                         $this->dieWithError( [ 'apierror-invaliduserid', $uid ], 'invaliduserid' );
 145                                 }
 146                                 $ids[] = $uid;
 147                         }
 148
 149                         $this->orderBy = 'id';
 150                         $this->multiUserMode = count( $ids ) > 1;
 151
 152                         $from = $fromId = false;
 153                         if ( $this->multiUserMode && !is_null( $this->params['continue'] ) ) {
 154                                 $continue = explode( '|', $this->params['continue'] );
 155                                 $this->dieContinueUsageIf( count( $continue ) != 4 );
 156                                 $this->dieContinueUsageIf( $continue[0] !== 'id' && $continue[0] !== 'actor' );
 157                                 $fromId = (int)$continue[1];
 158                                 $this->dieContinueUsageIf( $continue[1] !== (string)$fromId );
 159                                 $from = "$op= $fromId";
 160                         }
 161
 162                         // For the new schema, just select from the actor table. For the
 163                         // old, select from user.
 164                         if ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_READ_NEW ) {
 165                                 $res = $dbSecondary->select(
 166                                         'actor',
 167                                         [ 'actor_id', 'user_id' => 'actor_user', 'user_name' => 'actor_name' ],
 168                                         array_merge( [ 'actor_user' => $ids ], $from ? [ "actor_id $from" ] : [] ),
 169                                         __METHOD__,
 170                                         [ 'ORDER BY' => "user_id $sort" ]
 171                                 );
 172                         } else {
 173                                 $res = $dbSecondary->select(
 174                                         'user',
 175                                         [ 'actor_id' => 'NULL', 'user_id' => 'user_id', 'user_name' => 'user_name' ],
 176                                         array_merge( [ 'user_id' => $ids ], $from ? [ "user_id $from" ] : [] ),
 177                                         __METHOD__,
 178                                         [ 'ORDER BY' => "user_id $sort" ]
 179                                 );
 180                         }
 181                         $userIter = UserArray::newFromResult( $res );
 182                         $batchSize = count( $ids );
 183                 } else {
 184                         $names = [];
 185                         if ( !count( $this->params['user'] ) ) {
 186                                 $encParamName = $this->encodeParamName( 'user' );
 187                                 $this->dieWithError(
 188                                         [ 'apierror-paramempty', $encParamName ], "paramempty_$encParamName"
 189                                 );
 190                         }
 191                         foreach ( $this->params['user'] as $u ) {
 192                                 if ( $u === '' ) {
 193                                         $encParamName = $this->encodeParamName( 'user' );
 194                                         $this->dieWithError(
 195                                                 [ 'apierror-paramempty', $encParamName ], "paramempty_$encParamName"
 196                                         );
 197                                 }
 198
 199                                 if ( User::isIP( $u ) || ExternalUserNames::isExternal( $u ) ) {
 200                                         $names[$u] = null;
 201                                 } else {
 202                                         $name = User::getCanonicalName( $u, 'valid' );
 203                                         if ( $name === false ) {
 204                                                 $encParamName = $this->encodeParamName( 'user' );
 205                                                 $this->dieWithError(
 206                                                         [ 'apierror-baduser', $encParamName, wfEscapeWikiText( $u ) ], "baduser_$encParamName"
 207                                                 );
 208                                         }
 209                                         $names[$name] = null;
 210                                 }
 211                         }
 212
 213                         $this->orderBy = 'name';
 214                         $this->multiUserMode = count( $names ) > 1;
 215
 216                         $from = $fromName = false;
 217                         if ( $this->multiUserMode && !is_null( $this->params['continue'] ) ) {
 218                                 $continue = explode( '|', $this->params['continue'] );
 219                                 $this->dieContinueUsageIf( count( $continue ) != 4 );
 220                                 $this->dieContinueUsageIf( $continue[0] !== 'name' && $continue[0] !== 'actor' );
 221                                 $fromName = $continue[1];
 222                                 $from = "$op= " . $dbSecondary->addQuotes( $fromName );
 223                         }
 224
 225                         // For the new schema, just select from the actor table. For the
 226                         // old, select from user then merge in any unknown users (IPs and imports).
 227                         if ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_READ_NEW ) {
 228                                 $res = $dbSecondary->select(
 229                                         'actor',
 230                                         [ 'actor_id', 'user_id' => 'actor_user', 'user_name' => 'actor_name' ],
 231                                         array_merge( [ 'actor_name' => array_keys( $names ) ], $from ? [ "actor_id $from" ] : [] ),
 232                                         __METHOD__,
 233                                         [ 'ORDER BY' => "actor_name $sort" ]
 234                                 );
 235                                 $userIter = UserArray::newFromResult( $res );
 236                         } else {
 237                                 $res = $dbSecondary->select(
 238                                         'user',
 239                                         [ 'actor_id' => 'NULL', 'user_id', 'user_name' ],
 240                                         array_merge( [ 'user_name' => array_keys( $names ) ], $from ? [ "user_name $from" ] : [] ),
 241                                         __METHOD__
 242                                 );
 243                                 foreach ( $res as $row ) {
 244                                         $names[$row->user_name] = $row;
 245                                 }
 246                                 if ( $this->params['dir'] == 'newer' ) {
 247                                         ksort( $names, SORT_STRING );
 248                                 } else {
 249                                         krsort( $names, SORT_STRING );
 250                                 }
 251                                 $neg = $op === '>' ? -1 : 1;
 252                                 $userIter = call_user_func( function () use ( $names, $fromName, $neg ) {
 253                                         foreach ( $names as $name => $row ) {
 254                                                 if ( $fromName === false || $neg * strcmp( $name, $fromName ) <= 0 ) {
 255                                                         $user = $row ? User::newFromRow( $row ) : User::newFromName( $name, false );
 256                                                         yield $user;
 257                                                 }
 258                                         }
 259                                 } );
 260                         }
 261                         $batchSize = count( $names );
 262                 }
 263
 264                 // With the new schema, the DB query will order by actor so update $this->orderBy to match.
 265                 if ( $batchSize > 1 && ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_READ_NEW ) ) {
 266                         $this->orderBy = 'actor';
 267                 }
 268
 269                 // Use the 'contributions' replica, but only if we're querying by user ID (T216656).
 270                 if ( $this->orderBy === 'id' &&
 271                         !( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_READ_NEW )
 272                 ) {
 273                         $this->selectNamedDB( 'contributions', DB_REPLICA, 'contributions' );
 274                 }
 275
 276                 $count = 0;
 277                 $limit = $this->params['limit'];
 278                 $userIter->rewind();
 279                 while ( $userIter->valid() ) {
 280                         $users = [];
 281                         while ( count( $users ) < $batchSize && $userIter->valid() ) {
 282                                 $users[] = $userIter->current();
 283                                 $userIter->next();
 284                         }
 285
 286                         $hookData = [];
 287                         $this->prepareQuery( $users, $limit - $count );
 288                         $res = $this->select( __METHOD__, [], $hookData );
 289
 290                         if ( $this->fld_sizediff ) {
 291                                 $revIds = [];
 292                                 foreach ( $res as $row ) {
 293                                         if ( $row->rev_parent_id ) {
 294                                                 $revIds[] = $row->rev_parent_id;
 295                                         }
 296                                 }
 297                                 $this->parentLens = MediaWikiServices::getInstance()->getRevisionStore()
 298                                         ->listRevisionSizes( $dbSecondary, $revIds );
 299                         }
 300
 301                         foreach ( $res as $row ) {
 302                                 if ( ++$count > $limit ) {
 303                                         // We've reached the one extra which shows that there are
 304                                         // additional pages to be had. Stop here...
 305                                         $this->setContinueEnumParameter( 'continue', $this->continueStr( $row ) );
 306                                         break 2;
 307                                 }
 308
 309                                 $vals = $this->extractRowInfo( $row );
 310                                 $fit = $this->processRow( $row, $vals, $hookData ) &&
 311                                         $this->getResult()->addValue( [ 'query', $this->getModuleName() ], null, $vals );
 312                                 if ( !$fit ) {
 313                                         $this->setContinueEnumParameter( 'continue', $this->continueStr( $row ) );
 314                                         break 2;
 315                                 }
 316                         }
 317                 }
 318
 319                 $this->getResult()->addIndexedTagName( [ 'query', $this->getModuleName() ], 'item' );
 320         }
 321
 322         /**
 323          * Prepares the query and returns the limit of rows requested
 324          * @param User[] $users
 325          * @param int $limit
 326          */
 327         private function prepareQuery( array $users, $limit ) {
 328                 global $wgActorTableSchemaMigrationStage;
 329
 330                 $this->resetQueryParams();
 331                 $db = $this->getDB();
 332
 333                 $revQuery = MediaWikiServices::getInstance()->getRevisionStore()->getQueryInfo( [ 'page' ] );
 334
 335                 if ( $wgActorTableSchemaMigrationStage & SCHEMA_COMPAT_READ_NEW ) {
 336                         $revWhere = ActorMigration::newMigration()->getWhere( $db, 'rev_user', $users );
 337                         $orderUserField = 'rev_actor';
 338                         $userField = $this->orderBy === 'actor' ? 'revactor_actor' : 'actor_name';
 339                         $tsField = 'revactor_timestamp';
 340                         $idField = 'revactor_rev';
 341
 342                         // T221511: MySQL/MariaDB (10.1.37) can sometimes irrationally decide that querying `actor`
 343                         // before `revision_actor_temp` and filesorting is somehow better than querying $limit+1 rows
 344                         // from `revision_actor_temp`. Tell it not to reorder the query (and also reorder it ourselves
 345                         // because as generated by RevisionStore it'll have `revision` first rather than
 346                         // `revision_actor_temp`). But not when uctag is used, as it seems as likely to be harmed as
 347                         // helped in that case, and not when there's only one User because in that case it fetches
 348                         // the one `actor` row as a constant and doesn't filesort.
 349                         if ( count( $users ) > 1 && !isset( $this->params['tag'] ) ) {
 350                                 $revQuery['joins']['revision'] = $revQuery['joins']['temp_rev_user'];
 351                                 unset( $revQuery['joins']['temp_rev_user'] );
 352                                 $this->addOption( 'STRAIGHT_JOIN' );
 353                                 // It isn't actually necesssary to reorder $revQuery['tables'] as Database does the right thing
 354                                 // when join conditions are given for all joins, but Gergő is wary of relying on that so pull
 355                                 // `revision_actor_temp` to the start.
 356                                 $revQuery['tables'] =
 357                                         [ 'temp_rev_user' => $revQuery['tables']['temp_rev_user'] ] + $revQuery['tables'];
 358                         }
 359                 } else {
 360                         // If we're dealing with user names (rather than IDs) in read-old mode,
 361                         // pass false for ActorMigration::getWhere()'s $useId parameter so
 362                         // $revWhere['conds'] isn't an OR.
 363                         $revWhere = ActorMigration::newMigration()
 364                                 ->getWhere( $db, 'rev_user', $users, $this->orderBy === 'id' );
 365                         $orderUserField = $this->orderBy === 'id' ? 'rev_user' : 'rev_user_text';
 366                         $userField = $revQuery['fields'][$orderUserField];
 367                         $tsField = 'rev_timestamp';
 368                         $idField = 'rev_id';
 369                 }
 370
 371                 $this->addTables( $revQuery['tables'] );
 372                 $this->addJoinConds( $revQuery['joins'] );
 373                 $this->addFields( $revQuery['fields'] );
 374                 $this->addWhere( $revWhere['conds'] );
 375
 376                 // Handle continue parameter
 377                 if ( !is_null( $this->params['continue'] ) ) {
 378                         $continue = explode( '|', $this->params['continue'] );
 379                         if ( $this->multiUserMode ) {
 380                                 $this->dieContinueUsageIf( count( $continue ) != 4 );
 381                                 $modeFlag = array_shift( $continue );
 382                                 $this->dieContinueUsageIf( $modeFlag !== $this->orderBy );
 383                                 $encUser = $db->addQuotes( array_shift( $continue ) );
 384                         } else {
 385                                 $this->dieContinueUsageIf( count( $continue ) != 2 );
 386                         }
 387                         $encTS = $db->addQuotes( $db->timestamp( $continue[0] ) );
 388                         $encId = (int)$continue[1];
 389                         $this->dieContinueUsageIf( $encId != $continue[1] );
 390                         $op = ( $this->params['dir'] == 'older' ? '<' : '>' );
 391                         if ( $this->multiUserMode ) {
 392                                 $this->addWhere(
 393                                         "$userField $op $encUser OR " .
 394                                         "($userField = $encUser AND " .
 395                                         "($tsField $op $encTS OR " .
 396                                         "($tsField = $encTS AND " .
 397                                         "$idField $op= $encId)))"
 398                                 );
 399                         } else {
 400                                 $this->addWhere(
 401                                         "$tsField $op $encTS OR " .
 402                                         "($tsField = $encTS AND " .
 403                                         "$idField $op= $encId)"
 404                                 );
 405                         }
 406                 }
 407
 408                 // Don't include any revisions where we're not supposed to be able to
 409                 // see the username.
 410                 $user = $this->getUser();
 411                 if ( !$user->isAllowed( 'deletedhistory' ) ) {
 412                         $bitmask = RevisionRecord::DELETED_USER;
 413                 } elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
 414                         $bitmask = RevisionRecord::DELETED_USER | RevisionRecord::DELETED_RESTRICTED;
 415                 } else {
 416                         $bitmask = 0;
 417                 }
 418                 if ( $bitmask ) {
 419                         $this->addWhere( $db->bitAnd( 'rev_deleted', $bitmask ) . " != $bitmask" );
 420                 }
 421
 422                 // Add the user field to ORDER BY if there are multiple users
 423                 if ( count( $users ) > 1 ) {
 424                         $this->addWhereRange( $orderUserField, $this->params['dir'], null, null );
 425                 }
 426
 427                 // Then timestamp
 428                 $this->addTimestampWhereRange( $tsField,
 429                         $this->params['dir'], $this->params['start'], $this->params['end'] );
 430
 431                 // Then rev_id for a total ordering
 432                 $this->addWhereRange( $idField, $this->params['dir'], null, null );
 433
 434                 $this->addWhereFld( 'page_namespace', $this->params['namespace'] );
 435
 436                 $show = $this->params['show'];
 437                 if ( $this->params['toponly'] ) { // deprecated/old param
 438                         $show[] = 'top';
 439                 }
 440                 if ( !is_null( $show ) ) {
 441                         $show = array_flip( $show );
 442
 443                         if ( ( isset( $show['minor'] ) && isset( $show['!minor'] ) )
 444                                 || ( isset( $show['patrolled'] ) && isset( $show['!patrolled'] ) )
 445                                 || ( isset( $show['autopatrolled'] ) && isset( $show['!autopatrolled'] ) )
 446                                 || ( isset( $show['autopatrolled'] ) && isset( $show['!patrolled'] ) )
 447                                 || ( isset( $show['top'] ) && isset( $show['!top'] ) )
 448                                 || ( isset( $show['new'] ) && isset( $show['!new'] ) )
 449                         ) {
 450                                 $this->dieWithError( 'apierror-show' );
 451                         }
 452
 453                         $this->addWhereIf( 'rev_minor_edit = 0', isset( $show['!minor'] ) );
 454                         $this->addWhereIf( 'rev_minor_edit != 0', isset( $show['minor'] ) );
 455                         $this->addWhereIf(
 456                                 'rc_patrolled = ' . RecentChange::PRC_UNPATROLLED,
 457                                 isset( $show['!patrolled'] )
 458                         );
 459                         $this->addWhereIf(
 460                                 'rc_patrolled != ' . RecentChange::PRC_UNPATROLLED,
 461                                 isset( $show['patrolled'] )
 462                         );
 463                         $this->addWhereIf(
 464                                 'rc_patrolled != ' . RecentChange::PRC_AUTOPATROLLED,
 465                                 isset( $show['!autopatrolled'] )
 466                         );
 467                         $this->addWhereIf(
 468                                 'rc_patrolled = ' . RecentChange::PRC_AUTOPATROLLED,
 469                                 isset( $show['autopatrolled'] )
 470                         );
 471                         $this->addWhereIf( $idField . ' != page_latest', isset( $show['!top'] ) );
 472                         $this->addWhereIf( $idField . ' = page_latest', isset( $show['top'] ) );
 473                         $this->addWhereIf( 'rev_parent_id != 0', isset( $show['!new'] ) );
 474                         $this->addWhereIf( 'rev_parent_id = 0', isset( $show['new'] ) );
 475                 }
 476                 $this->addOption( 'LIMIT', $limit + 1 );
 477
 478                 if ( isset( $show['patrolled'] ) || isset( $show['!patrolled'] ) ||
 479                         isset( $show['autopatrolled'] ) || isset( $show['!autopatrolled'] ) || $this->fld_patrolled
 480                 ) {
 481                         if ( !$user->useRCPatrol() && !$user->useNPPatrol() ) {
 482                                 $this->dieWithError( 'apierror-permissiondenied-patrolflag', 'permissiondenied' );
 483                         }
 484
 485                         $isFilterset = isset( $show['patrolled'] ) || isset( $show['!patrolled'] ) ||
 486                                 isset( $show['autopatrolled'] ) || isset( $show['!autopatrolled'] );
 487                         $this->addTables( 'recentchanges' );
 488                         $this->addJoinConds( [ 'recentchanges' => [
 489                                 $isFilterset ? 'JOIN' : 'LEFT JOIN',
 490                                 [
 491                                         // This is a crazy hack. recentchanges has no index on rc_this_oldid, so instead of adding
 492                                         // one T19237 did a join using rc_user_text and rc_timestamp instead. Now rc_user_text is
 493                                         // probably unavailable, so just do rc_timestamp.
 494                                         'rc_timestamp = ' . $tsField,
 495                                         'rc_this_oldid = ' . $idField,
 496                                 ]
 497                         ] ] );
 498                 }
 499
 500                 $this->addFieldsIf( 'rc_patrolled', $this->fld_patrolled );
 501
 502                 if ( $this->fld_tags ) {
 503                         $this->addFields( [ 'ts_tags' => ChangeTags::makeTagSummarySubquery( 'revision' ) ] );
 504                 }
 505
 506                 if ( isset( $this->params['tag'] ) ) {
 507                         $this->addTables( 'change_tag' );
 508                         $this->addJoinConds(
 509                                 [ 'change_tag' => [ 'JOIN', [ $idField . ' = ct_rev_id' ] ] ]
 510                         );
 511                         $changeTagDefStore = MediaWikiServices::getInstance()->getChangeTagDefStore();
 512                         try {
 513                                 $this->addWhereFld( 'ct_tag_id', $changeTagDefStore->getId( $this->params['tag'] ) );
 514                         } catch ( NameTableAccessException $exception ) {
 515                                 // Return nothing.
 516                                 $this->addWhere( '1=0' );
 517                         }
 518                 }
 519         }
 520
 521         /**
 522          * Extract fields from the database row and append them to a result array
 523          *
 524          * @param stdClass $row
 525          * @return array
 526          */
 527         private function extractRowInfo( $row ) {
 528                 $vals = [];
 529                 $anyHidden = false;
 530
 531                 if ( $row->rev_deleted & RevisionRecord::DELETED_TEXT ) {
 532                         $vals['texthidden'] = true;
 533                         $anyHidden = true;
 534                 }
 535
 536                 // Any rows where we can't view the user were filtered out in the query.
 537                 $vals['userid'] = (int)$row->rev_user;
 538                 $vals['user'] = $row->rev_user_text;
 539                 if ( $row->rev_deleted & RevisionRecord::DELETED_USER ) {
 540                         $vals['userhidden'] = true;
 541                         $anyHidden = true;
 542                 }
 543                 if ( $this->fld_ids ) {
 544                         $vals['pageid'] = (int)$row->rev_page;
 545                         $vals['revid'] = (int)$row->rev_id;
 546
 547                         if ( !is_null( $row->rev_parent_id ) ) {
 548                                 $vals['parentid'] = (int)$row->rev_parent_id;
 549                         }
 550                 }
 551
 552                 $title = Title::makeTitle( $row->page_namespace, $row->page_title );
 553
 554                 if ( $this->fld_title ) {
 555                         ApiQueryBase::addTitleInfo( $vals, $title );
 556                 }
 557
 558                 if ( $this->fld_timestamp ) {
 559                         $vals['timestamp'] = wfTimestamp( TS_ISO_8601, $row->rev_timestamp );
 560                 }
 561
 562                 if ( $this->fld_flags ) {
 563                         $vals['new'] = $row->rev_parent_id == 0 && !is_null( $row->rev_parent_id );
 564                         $vals['minor'] = (bool)$row->rev_minor_edit;
 565                         $vals['top'] = $row->page_latest == $row->rev_id;
 566                 }
 567
 568                 if ( $this->fld_comment || $this->fld_parsedcomment ) {
 569                         if ( $row->rev_deleted & RevisionRecord::DELETED_COMMENT ) {
 570                                 $vals['commenthidden'] = true;
 571                                 $anyHidden = true;
 572                         }
 573
 574                         $userCanView = RevisionRecord::userCanBitfield(
 575                                 $row->rev_deleted,
 576                                 RevisionRecord::DELETED_COMMENT, $this->getUser()
 577                         );
 578
 579                         if ( $userCanView ) {
 580                                 $comment = $this->commentStore->getComment( 'rev_comment', $row )->text;
 581                                 if ( $this->fld_comment ) {
 582                                         $vals['comment'] = $comment;
 583                                 }
 584
 585                                 if ( $this->fld_parsedcomment ) {
 586                                         $vals['parsedcomment'] = Linker::formatComment( $comment, $title );
 587                                 }
 588                         }
 589                 }
 590
 591                 if ( $this->fld_patrolled ) {
 592                         $vals['patrolled'] = $row->rc_patrolled != RecentChange::PRC_UNPATROLLED;
 593                         $vals['autopatrolled'] = $row->rc_patrolled == RecentChange::PRC_AUTOPATROLLED;
 594                 }
 595
 596                 if ( $this->fld_size && !is_null( $row->rev_len ) ) {
 597                         $vals['size'] = (int)$row->rev_len;
 598                 }
 599
 600                 if ( $this->fld_sizediff
 601                         && !is_null( $row->rev_len )
 602                         && !is_null( $row->rev_parent_id )
 603                 ) {
 604                         $parentLen = $this->parentLens[$row->rev_parent_id] ?? 0;
 605                         $vals['sizediff'] = (int)$row->rev_len - $parentLen;
 606                 }
 607
 608                 if ( $this->fld_tags ) {
 609                         if ( $row->ts_tags ) {
 610                                 $tags = explode( ',', $row->ts_tags );
 611                                 ApiResult::setIndexedTagName( $tags, 'tag' );
 612                                 $vals['tags'] = $tags;
 613                         } else {
 614                                 $vals['tags'] = [];
 615                         }
 616                 }
 617
 618                 if ( $anyHidden && ( $row->rev_deleted & RevisionRecord::DELETED_RESTRICTED ) ) {
 619                         $vals['suppressed'] = true;
 620                 }
 621
 622                 return $vals;
 623         }
 624
 625         private function continueStr( $row ) {
 626                 if ( $this->multiUserMode ) {
 627                         switch ( $this->orderBy ) {
 628                                 case 'id':
 629                                         return "id|$row->rev_user|$row->rev_timestamp|$row->rev_id";
 630                                 case 'name':
 631                                         return "name|$row->rev_user_text|$row->rev_timestamp|$row->rev_id";
 632                                 case 'actor':
 633                                         return "actor|$row->rev_actor|$row->rev_timestamp|$row->rev_id";
 634                         }
 635                 } else {
 636                         return "$row->rev_timestamp|$row->rev_id";
 637                 }
 638         }
 639
 640         public function getCacheMode( $params ) {
 641                 // This module provides access to deleted revisions and patrol flags if
 642                 // the requester is logged in
 643                 return 'anon-public-user-private';
 644         }
 645
 646         public function getAllowedParams() {
 647                 return [
 648                         'limit' => [
 649                                 ApiBase::PARAM_DFLT => 10,
 650                                 ApiBase::PARAM_TYPE => 'limit',
 651                                 ApiBase::PARAM_MIN => 1,
 652                                 ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
 653                                 ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
 654                         ],
 655                         'start' => [
 656                                 ApiBase::PARAM_TYPE => 'timestamp'
 657                         ],
 658                         'end' => [
 659                                 ApiBase::PARAM_TYPE => 'timestamp'
 660                         ],
 661                         'continue' => [
 662                                 ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
 663                         ],
 664                         'user' => [
 665                                 ApiBase::PARAM_TYPE => 'user',
 666                                 ApiBase::PARAM_ISMULTI => true
 667                         ],
 668                         'userids' => [
 669                                 ApiBase::PARAM_TYPE => 'integer',
 670                                 ApiBase::PARAM_ISMULTI => true
 671                         ],
 672                         'userprefix' => null,
 673                         'dir' => [
 674                                 ApiBase::PARAM_DFLT => 'older',
 675                                 ApiBase::PARAM_TYPE => [
 676                                         'newer',
 677                                         'older'
 678                                 ],
 679                                 ApiBase::PARAM_HELP_MSG => 'api-help-param-direction',
 680                         ],
 681                         'namespace' => [
 682                                 ApiBase::PARAM_ISMULTI => true,
 683                                 ApiBase::PARAM_TYPE => 'namespace'
 684                         ],
 685                         'prop' => [
 686                                 ApiBase::PARAM_ISMULTI => true,
 687                                 ApiBase::PARAM_DFLT => 'ids|title|timestamp|comment|size|flags',
 688                                 ApiBase::PARAM_TYPE => [
 689                                         'ids',
 690                                         'title',
 691                                         'timestamp',
 692                                         'comment',
 693                                         'parsedcomment',
 694                                         'size',
 695                                         'sizediff',
 696                                         'flags',
 697                                         'patrolled',
 698                                         'tags'
 699                                 ],
 700                                 ApiBase::PARAM_HELP_MSG_PER_VALUE => [],
 701                         ],
 702                         'show' => [
 703                                 ApiBase::PARAM_ISMULTI => true,
 704                                 ApiBase::PARAM_TYPE => [
 705                                         'minor',
 706                                         '!minor',
 707                                         'patrolled',
 708                                         '!patrolled',
 709                                         'autopatrolled',
 710                                         '!autopatrolled',
 711                                         'top',
 712                                         '!top',
 713                                         'new',
 714                                         '!new',
 715                                 ],
 716                                 ApiBase::PARAM_HELP_MSG => [
 717                                         'apihelp-query+usercontribs-param-show',
 718                                         $this->getConfig()->get( 'RCMaxAge' )
 719                                 ],
 720                         ],
 721                         'tag' => null,
 722                         'toponly' => [
 723                                 ApiBase::PARAM_DFLT => false,
 724                                 ApiBase::PARAM_DEPRECATED => true,
 725                         ],
 726                 ];
 727         }
 728
 729         protected function getExamplesMessages() {
 730                 return [
 731                         'action=query&list=usercontribs&ucuser=Example'
 732                                 => 'apihelp-query+usercontribs-example-user',
 733                         'action=query&list=usercontribs&ucuserprefix=192.0.2.'
 734                                 => 'apihelp-query+usercontribs-example-ipprefix',
 735                 ];
 736         }
 737
 738         public function getHelpUrls() {
 739                 return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Usercontribs';
 740         }
 741 }
 742
 743 /**
 744  * @since 1.9
 745  * @deprecated since 1.32
 746  */
 747 class_alias( ApiQueryUserContribs::class, 'ApiQueryContributions' );