includes/api/ApiQueryUserContributions.php

   1 <?php
   2 /**
   3  *
   4  *
   5  * Created on Oct 16, 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  * This query action adds a list of a specified user's contributions to the output.
  29  *
  30  * @ingroup API
  31  */
  32 class ApiQueryContributions extends ApiQueryBase {
  33
  34         public function __construct( $query, $moduleName ) {
  35                 parent::__construct( $query, $moduleName, 'uc' );
  36         }
  37
  38         private $params, $prefixMode, $userprefix, $multiUserMode, $usernames, $parentLens;
  39         private $fld_ids = false, $fld_title = false, $fld_timestamp = false,
  40                 $fld_comment = false, $fld_parsedcomment = false, $fld_flags = false,
  41                 $fld_patrolled = false, $fld_tags = false, $fld_size = false, $fld_sizediff = false;
  42
  43         public function execute() {
  44                 // Parse some parameters
  45                 $this->params = $this->extractRequestParams();
  46
  47                 $prop = array_flip( $this->params['prop'] );
  48                 $this->fld_ids = isset( $prop['ids'] );
  49                 $this->fld_title = isset( $prop['title'] );
  50                 $this->fld_comment = isset( $prop['comment'] );
  51                 $this->fld_parsedcomment = isset( $prop['parsedcomment'] );
  52                 $this->fld_size = isset( $prop['size'] );
  53                 $this->fld_sizediff = isset( $prop['sizediff'] );
  54                 $this->fld_flags = isset( $prop['flags'] );
  55                 $this->fld_timestamp = isset( $prop['timestamp'] );
  56                 $this->fld_patrolled = isset( $prop['patrolled'] );
  57                 $this->fld_tags = isset( $prop['tags'] );
  58
  59                 // TODO: if the query is going only against the revision table, should this be done?
  60                 $this->selectNamedDB( 'contributions', DB_SLAVE, 'contributions' );
  61
  62                 if ( isset( $this->params['userprefix'] ) ) {
  63                         $this->prefixMode = true;
  64                         $this->multiUserMode = true;
  65                         $this->userprefix = $this->params['userprefix'];
  66                 } else {
  67                         $this->usernames = array();
  68                         if ( !is_array( $this->params['user'] ) ) {
  69                                 $this->params['user'] = array( $this->params['user'] );
  70                         }
  71                         if ( !count( $this->params['user'] ) ) {
  72                                 $this->dieUsage( 'User parameter may not be empty.', 'param_user' );
  73                         }
  74                         foreach ( $this->params['user'] as $u ) {
  75                                 $this->prepareUsername( $u );
  76                         }
  77                         $this->prefixMode = false;
  78                         $this->multiUserMode = ( count( $this->params['user'] ) > 1 );
  79                 }
  80
  81                 $this->prepareQuery();
  82
  83                 // Do the actual query.
  84                 $res = $this->select( __METHOD__ );
  85
  86                 if ( $this->fld_sizediff ) {
  87                         $revIds = array();
  88                         foreach ( $res as $row ) {
  89                                 if ( $row->rev_parent_id ) {
  90                                         $revIds[] = $row->rev_parent_id;
  91                                 }
  92                         }
  93                         $this->parentLens = Revision::getParentLengths( $this->getDB(), $revIds );
  94                         $res->rewind(); // reset
  95                 }
  96
  97                 // Initialise some variables
  98                 $count = 0;
  99                 $limit = $this->params['limit'];
 100
 101                 // Fetch each row
 102                 foreach ( $res as $row ) {
 103                         if ( ++$count > $limit ) {
 104                                 // We've reached the one extra which shows that there are
 105                                 // additional pages to be had. Stop here...
 106                                 if ( $this->multiUserMode ) {
 107                                         $this->setContinueEnumParameter( 'continue', $this->continueStr( $row ) );
 108                                 } else {
 109                                         $this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->rev_timestamp ) );
 110                                 }
 111                                 break;
 112                         }
 113
 114                         $vals = $this->extractRowInfo( $row );
 115                         $fit = $this->getResult()->addValue( array( 'query', $this->getModuleName() ), null, $vals );
 116                         if ( !$fit ) {
 117                                 if ( $this->multiUserMode ) {
 118                                         $this->setContinueEnumParameter( 'continue', $this->continueStr( $row ) );
 119                                 } else {
 120                                         $this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->rev_timestamp ) );
 121                                 }
 122                                 break;
 123                         }
 124                 }
 125
 126                 $this->getResult()->setIndexedTagName_internal(
 127                         array( 'query', $this->getModuleName() ),
 128                         'item'
 129                 );
 130         }
 131
 132         /**
 133          * Validate the 'user' parameter and set the value to compare
 134          * against `revision`.`rev_user_text`
 135          *
 136          * @param $user string
 137          */
 138         private function prepareUsername( $user ) {
 139                 if ( !is_null( $user ) && $user !== '' ) {
 140                         $name = User::isIP( $user )
 141                                 ? $user
 142                                 : User::getCanonicalName( $user, 'valid' );
 143                         if ( $name === false ) {
 144                                 $this->dieUsage( "User name {$user} is not valid", 'param_user' );
 145                         } else {
 146                                 $this->usernames[] = $name;
 147                         }
 148                 } else {
 149                         $this->dieUsage( 'User parameter may not be empty', 'param_user' );
 150                 }
 151         }
 152
 153         /**
 154          * Prepares the query and returns the limit of rows requested
 155          */
 156         private function prepareQuery() {
 157                 // We're after the revision table, and the corresponding page
 158                 // row for anything we retrieve. We may also need the
 159                 // recentchanges row and/or tag summary row.
 160                 $user = $this->getUser();
 161                 $tables = array( 'page', 'revision' ); // Order may change
 162                 $this->addWhere( 'page_id=rev_page' );
 163
 164                 // Handle continue parameter
 165                 if ( $this->multiUserMode && !is_null( $this->params['continue'] ) ) {
 166                         $continue = explode( '|', $this->params['continue'] );
 167                         $this->dieContinueUsageIf( count( $continue ) != 2 );
 168                         $db = $this->getDB();
 169                         $encUser = $db->addQuotes( $continue[0] );
 170                         $encTS = $db->addQuotes( $db->timestamp( $continue[1] ) );
 171                         $op = ( $this->params['dir'] == 'older' ? '<' : '>' );
 172                         $this->addWhere(
 173                                 "rev_user_text $op $encUser OR " .
 174                                 "(rev_user_text = $encUser AND " .
 175                                 "rev_timestamp $op= $encTS)"
 176                         );
 177                 }
 178
 179                 if ( !$user->isAllowed( 'hideuser' ) ) {
 180                         $this->addWhere( $this->getDB()->bitAnd( 'rev_deleted', Revision::DELETED_USER ) . ' = 0' );
 181                 }
 182                 // We only want pages by the specified users.
 183                 if ( $this->prefixMode ) {
 184                         $this->addWhere( 'rev_user_text' .
 185                                 $this->getDB()->buildLike( $this->userprefix, $this->getDB()->anyString() ) );
 186                 } else {
 187                         $this->addWhereFld( 'rev_user_text', $this->usernames );
 188                 }
 189                 // ... and in the specified timeframe.
 190                 // Ensure the same sort order for rev_user_text and rev_timestamp
 191                 // so our query is indexed
 192                 if ( $this->multiUserMode ) {
 193                         $this->addWhereRange( 'rev_user_text', $this->params['dir'], null, null );
 194                 }
 195                 $this->addTimestampWhereRange( 'rev_timestamp',
 196                         $this->params['dir'], $this->params['start'], $this->params['end'] );
 197                 $this->addWhereFld( 'page_namespace', $this->params['namespace'] );
 198
 199                 $show = $this->params['show'];
 200                 if ( !is_null( $show ) ) {
 201                         $show = array_flip( $show );
 202                         if ( ( isset( $show['minor'] ) && isset( $show['!minor'] ) )
 203                                 || ( isset( $show['patrolled'] ) && isset( $show['!patrolled'] ) )
 204                         ) {
 205                                 $this->dieUsageMsg( 'show' );
 206                         }
 207
 208                         $this->addWhereIf( 'rev_minor_edit = 0', isset( $show['!minor'] ) );
 209                         $this->addWhereIf( 'rev_minor_edit != 0', isset( $show['minor'] ) );
 210                         $this->addWhereIf( 'rc_patrolled = 0', isset( $show['!patrolled'] ) );
 211                         $this->addWhereIf( 'rc_patrolled != 0', isset( $show['patrolled'] ) );
 212                 }
 213                 $this->addOption( 'LIMIT', $this->params['limit'] + 1 );
 214                 $index = array( 'revision' => 'usertext_timestamp' );
 215
 216                 // Mandatory fields: timestamp allows request continuation
 217                 // ns+title checks if the user has access rights for this page
 218                 // user_text is necessary if multiple users were specified
 219                 $this->addFields( array(
 220                         'rev_timestamp',
 221                         'page_namespace',
 222                         'page_title',
 223                         'rev_user',
 224                         'rev_user_text',
 225                         'rev_deleted'
 226                 ) );
 227
 228                 if ( isset( $show['patrolled'] ) || isset( $show['!patrolled'] ) ||
 229                         $this->fld_patrolled
 230                 ) {
 231                         if ( !$user->useRCPatrol() && !$user->useNPPatrol() ) {
 232                                 $this->dieUsage(
 233                                         'You need the patrol right to request the patrolled flag',
 234                                         'permissiondenied'
 235                                 );
 236                         }
 237
 238                         // Use a redundant join condition on both
 239                         // timestamp and ID so we can use the timestamp
 240                         // index
 241                         $index['recentchanges'] = 'rc_user_text';
 242                         if ( isset( $show['patrolled'] ) || isset( $show['!patrolled'] ) ) {
 243                                 // Put the tables in the right order for
 244                                 // STRAIGHT_JOIN
 245                                 $tables = array( 'revision', 'recentchanges', 'page' );
 246                                 $this->addOption( 'STRAIGHT_JOIN' );
 247                                 $this->addWhere( 'rc_user_text=rev_user_text' );
 248                                 $this->addWhere( 'rc_timestamp=rev_timestamp' );
 249                                 $this->addWhere( 'rc_this_oldid=rev_id' );
 250                         } else {
 251                                 $tables[] = 'recentchanges';
 252                                 $this->addJoinConds( array( 'recentchanges' => array(
 253                                         'LEFT JOIN', array(
 254                                                 'rc_user_text=rev_user_text',
 255                                                 'rc_timestamp=rev_timestamp',
 256                                                 'rc_this_oldid=rev_id' ) ) ) );
 257                         }
 258                 }
 259
 260                 $this->addTables( $tables );
 261                 $this->addFieldsIf( 'rev_page', $this->fld_ids );
 262                 $this->addFieldsIf( 'rev_id', $this->fld_ids || $this->fld_flags );
 263                 $this->addFieldsIf( 'page_latest', $this->fld_flags );
 264                 // $this->addFieldsIf( 'rev_text_id', $this->fld_ids ); // Should this field be exposed?
 265                 $this->addFieldsIf( 'rev_comment', $this->fld_comment || $this->fld_parsedcomment );
 266                 $this->addFieldsIf( 'rev_len', $this->fld_size || $this->fld_sizediff );
 267                 $this->addFieldsIf( 'rev_minor_edit', $this->fld_flags );
 268                 $this->addFieldsIf( 'rev_parent_id', $this->fld_flags || $this->fld_sizediff || $this->fld_ids );
 269                 $this->addFieldsIf( 'rc_patrolled', $this->fld_patrolled );
 270
 271                 if ( $this->fld_tags ) {
 272                         $this->addTables( 'tag_summary' );
 273                         $this->addJoinConds(
 274                                 array( 'tag_summary' => array( 'LEFT JOIN', array( 'rev_id=ts_rev_id' ) ) )
 275                         );
 276                         $this->addFields( 'ts_tags' );
 277                 }
 278
 279                 if ( isset( $this->params['tag'] ) ) {
 280                         $this->addTables( 'change_tag' );
 281                         $this->addJoinConds(
 282                                 array( 'change_tag' => array( 'INNER JOIN', array( 'rev_id=ct_rev_id' ) ) )
 283                         );
 284                         $this->addWhereFld( 'ct_tag', $this->params['tag'] );
 285                         $index['change_tag'] = 'change_tag_tag_id';
 286                 }
 287
 288                 if ( $this->params['toponly'] ) {
 289                         $this->addWhere( 'rev_id = page_latest' );
 290                 }
 291
 292                 $this->addOption( 'USE INDEX', $index );
 293         }
 294
 295         /**
 296          * Extract fields from the database row and append them to a result array
 297          *
 298          * @param $row
 299          * @return array
 300          */
 301         private function extractRowInfo( $row ) {
 302                 $vals = array();
 303
 304                 $vals['userid'] = $row->rev_user;
 305                 $vals['user'] = $row->rev_user_text;
 306                 if ( $row->rev_deleted & Revision::DELETED_USER ) {
 307                         $vals['userhidden'] = '';
 308                 }
 309                 if ( $this->fld_ids ) {
 310                         $vals['pageid'] = intval( $row->rev_page );
 311                         $vals['revid'] = intval( $row->rev_id );
 312                         // $vals['textid'] = intval( $row->rev_text_id ); // todo: Should this field be exposed?
 313
 314                         if ( !is_null( $row->rev_parent_id ) ) {
 315                                 $vals['parentid'] = intval( $row->rev_parent_id );
 316                         }
 317                 }
 318
 319                 $title = Title::makeTitle( $row->page_namespace, $row->page_title );
 320
 321                 if ( $this->fld_title ) {
 322                         ApiQueryBase::addTitleInfo( $vals, $title );
 323                 }
 324
 325                 if ( $this->fld_timestamp ) {
 326                         $vals['timestamp'] = wfTimestamp( TS_ISO_8601, $row->rev_timestamp );
 327                 }
 328
 329                 if ( $this->fld_flags ) {
 330                         if ( $row->rev_parent_id == 0 && !is_null( $row->rev_parent_id ) ) {
 331                                 $vals['new'] = '';
 332                         }
 333                         if ( $row->rev_minor_edit ) {
 334                                 $vals['minor'] = '';
 335                         }
 336                         if ( $row->page_latest == $row->rev_id ) {
 337                                 $vals['top'] = '';
 338                         }
 339                 }
 340
 341                 if ( ( $this->fld_comment || $this->fld_parsedcomment ) && isset( $row->rev_comment ) ) {
 342                         if ( $row->rev_deleted & Revision::DELETED_COMMENT ) {
 343                                 $vals['commenthidden'] = '';
 344                         } else {
 345                                 if ( $this->fld_comment ) {
 346                                         $vals['comment'] = $row->rev_comment;
 347                                 }
 348
 349                                 if ( $this->fld_parsedcomment ) {
 350                                         $vals['parsedcomment'] = Linker::formatComment( $row->rev_comment, $title );
 351                                 }
 352                         }
 353                 }
 354
 355                 if ( $this->fld_patrolled && $row->rc_patrolled ) {
 356                         $vals['patrolled'] = '';
 357                 }
 358
 359                 if ( $this->fld_size && !is_null( $row->rev_len ) ) {
 360                         $vals['size'] = intval( $row->rev_len );
 361                 }
 362
 363                 if ( $this->fld_sizediff
 364                         && !is_null( $row->rev_len )
 365                         && !is_null( $row->rev_parent_id )
 366                 ) {
 367                         $parentLen = isset( $this->parentLens[$row->rev_parent_id] )
 368                                 ? $this->parentLens[$row->rev_parent_id]
 369                                 : 0;
 370                         $vals['sizediff'] = intval( $row->rev_len - $parentLen );
 371                 }
 372
 373                 if ( $this->fld_tags ) {
 374                         if ( $row->ts_tags ) {
 375                                 $tags = explode( ',', $row->ts_tags );
 376                                 $this->getResult()->setIndexedTagName( $tags, 'tag' );
 377                                 $vals['tags'] = $tags;
 378                         } else {
 379                                 $vals['tags'] = array();
 380                         }
 381                 }
 382
 383                 return $vals;
 384         }
 385
 386         private function continueStr( $row ) {
 387                 return $row->rev_user_text . '|' .
 388                         wfTimestamp( TS_ISO_8601, $row->rev_timestamp );
 389         }
 390
 391         public function getCacheMode( $params ) {
 392                 // This module provides access to deleted revisions and patrol flags if
 393                 // the requester is logged in
 394                 return 'anon-public-user-private';
 395         }
 396
 397         public function getAllowedParams() {
 398                 return array(
 399                         'limit' => array(
 400                                 ApiBase::PARAM_DFLT => 10,
 401                                 ApiBase::PARAM_TYPE => 'limit',
 402                                 ApiBase::PARAM_MIN => 1,
 403                                 ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
 404                                 ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
 405                         ),
 406                         'start' => array(
 407                                 ApiBase::PARAM_TYPE => 'timestamp'
 408                         ),
 409                         'end' => array(
 410                                 ApiBase::PARAM_TYPE => 'timestamp'
 411                         ),
 412                         'continue' => null,
 413                         'user' => array(
 414                                 ApiBase::PARAM_ISMULTI => true
 415                         ),
 416                         'userprefix' => null,
 417                         'dir' => array(
 418                                 ApiBase::PARAM_DFLT => 'older',
 419                                 ApiBase::PARAM_TYPE => array(
 420                                         'newer',
 421                                         'older'
 422                                 )
 423                         ),
 424                         'namespace' => array(
 425                                 ApiBase::PARAM_ISMULTI => true,
 426                                 ApiBase::PARAM_TYPE => 'namespace'
 427                         ),
 428                         'prop' => array(
 429                                 ApiBase::PARAM_ISMULTI => true,
 430                                 ApiBase::PARAM_DFLT => 'ids|title|timestamp|comment|size|flags',
 431                                 ApiBase::PARAM_TYPE => array(
 432                                         'ids',
 433                                         'title',
 434                                         'timestamp',
 435                                         'comment',
 436                                         'parsedcomment',
 437                                         'size',
 438                                         'sizediff',
 439                                         'flags',
 440                                         'patrolled',
 441                                         'tags'
 442                                 )
 443                         ),
 444                         'show' => array(
 445                                 ApiBase::PARAM_ISMULTI => true,
 446                                 ApiBase::PARAM_TYPE => array(
 447                                         'minor',
 448                                         '!minor',
 449                                         'patrolled',
 450                                         '!patrolled',
 451                                 )
 452                         ),
 453                         'tag' => null,
 454                         'toponly' => false,
 455                 );
 456         }
 457
 458         public function getParamDescription() {
 459                 global $wgRCMaxAge;
 460                 $p = $this->getModulePrefix();
 461
 462                 return array(
 463                         'limit' => 'The maximum number of contributions to return',
 464                         'start' => 'The start timestamp to return from',
 465                         'end' => 'The end timestamp to return to',
 466                         'continue' => 'When more results are available, use this to continue',
 467                         'user' => 'The users to retrieve contributions for',
 468                         'userprefix' => array(
 469                                 "Retrieve contributions for all users whose names begin with this value.",
 470                                 "Overrides {$p}user",
 471                         ),
 472                         'dir' => $this->getDirectionDescription( $p ),
 473                         'namespace' => 'Only list contributions in these namespaces',
 474                         'prop' => array(
 475                                 'Include additional pieces of information',
 476                                 ' ids            - Adds the page ID and revision ID',
 477                                 ' title          - Adds the title and namespace ID of the page',
 478                                 ' timestamp      - Adds the timestamp of the edit',
 479                                 ' comment        - Adds the comment of the edit',
 480                                 ' parsedcomment  - Adds the parsed comment of the edit',
 481                                 ' size           - Adds the new size of the edit',
 482                                 ' sizediff       - Adds the size delta of the edit against its parent',
 483                                 ' flags          - Adds flags of the edit',
 484                                 ' patrolled      - Tags patrolled edits',
 485                                 ' tags           - Lists tags for the edit',
 486                         ),
 487                         'show' => array(
 488                                 "Show only items that meet thse criteria, e.g. non minor edits only: {$p}show=!minor",
 489                                 "NOTE: If {$p}show=patrolled or {$p}show=!patrolled is set, revisions older than",
 490                                 "\$wgRCMaxAge ($wgRCMaxAge) won't be shown",
 491                         ),
 492                         'tag' => 'Only list revisions tagged with this tag',
 493                         'toponly' => 'Only list changes which are the latest revision',
 494                 );
 495         }
 496
 497         public function getResultProperties() {
 498                 return array(
 499                         '' => array(
 500                                 'userid' => 'integer',
 501                                 'user' => 'string',
 502                                 'userhidden' => 'boolean'
 503                         ),
 504                         'ids' => array(
 505                                 'pageid' => 'integer',
 506                                 'revid' => 'integer',
 507                                 'parentid' => array(
 508                                         ApiBase::PROP_TYPE => 'integer',
 509                                         ApiBase::PROP_NULLABLE => true
 510                                 )
 511                         ),
 512                         'title' => array(
 513                                 'ns' => 'namespace',
 514                                 'title' => 'string'
 515                         ),
 516                         'timestamp' => array(
 517                                 'timestamp' => 'timestamp'
 518                         ),
 519                         'flags' => array(
 520                                 'new' => 'boolean',
 521                                 'minor' => 'boolean',
 522                                 'top' => 'boolean'
 523                         ),
 524                         'comment' => array(
 525                                 'commenthidden' => 'boolean',
 526                                 'comment' => array(
 527                                         ApiBase::PROP_TYPE => 'string',
 528                                         ApiBase::PROP_NULLABLE => true
 529                                 )
 530                         ),
 531                         'parsedcomment' => array(
 532                                 'commenthidden' => 'boolean',
 533                                 'parsedcomment' => array(
 534                                         ApiBase::PROP_TYPE => 'string',
 535                                         ApiBase::PROP_NULLABLE => true
 536                                 )
 537                         ),
 538                         'patrolled' => array(
 539                                 'patrolled' => 'boolean'
 540                         ),
 541                         'size' => array(
 542                                 'size' => array(
 543                                         ApiBase::PROP_TYPE => 'integer',
 544                                         ApiBase::PROP_NULLABLE => true
 545                                 )
 546                         ),
 547                         'sizediff' => array(
 548                                 'sizediff' => array(
 549                                         ApiBase::PROP_TYPE => 'integer',
 550                                         ApiBase::PROP_NULLABLE => true
 551                                 )
 552                         )
 553                 );
 554         }
 555
 556         public function getDescription() {
 557                 return 'Get all edits by a user';
 558         }
 559
 560         public function getPossibleErrors() {
 561                 return array_merge( parent::getPossibleErrors(), array(
 562                         array( 'code' => 'param_user', 'info' => 'User parameter may not be empty.' ),
 563                         array( 'code' => 'param_user', 'info' => 'User name user is not valid' ),
 564                         array( 'show' ),
 565                         array(
 566                                 'code' => 'permissiondenied',
 567                                 'info' => 'You need the patrol right to request the patrolled flag'
 568                         ),
 569                 ) );
 570         }
 571
 572         public function getExamples() {
 573                 return array(
 574                         'api.php?action=query&list=usercontribs&ucuser=YurikBot',
 575                         'api.php?action=query&list=usercontribs&ucuserprefix=217.121.114.',
 576                 );
 577         }
 578
 579         public function getHelpUrls() {
 580                 return 'https://www.mediawiki.org/wiki/API:Usercontribs';
 581         }
 582 }