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