includes/api/ApiQueryUserContributions.php

   1 <?php
   2
   3 /**
   4  * Created on Oct 16, 2006
   5  *
   6  * API for MediaWiki 1.8+
   7  *
   8  * Copyright © 2006 Yuri Astrakhan <Firstname><Lastname>@gmail.com
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along
  21  * with this program; if not, write to the Free Software Foundation, Inc.,
  22  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  23  * http://www.gnu.org/copyleft/gpl.html
  24  */
  25
  26 if ( !defined( 'MEDIAWIKI' ) ) {
  27         // Eclipse helper - will be ignored in production
  28         require_once( 'ApiQueryBase.php' );
  29 }
  30
  31 /**
  32  * This query action adds a list of a specified user's contributions to the output.
  33  *
  34  * @ingroup API
  35  */
  36 class ApiQueryContributions extends ApiQueryBase {
  37
  38         public function __construct( $query, $moduleName ) {
  39                 parent::__construct( $query, $moduleName, 'uc' );
  40         }
  41
  42         private $params;
  43         private $fld_ids = false, $fld_title = false, $fld_timestamp = false,
  44                         $fld_comment = false, $fld_parsedcomment = false, $fld_flags = false,
  45                         $fld_patrolled = false, $fld_tags = false;
  46
  47         public function execute() {
  48                 // Parse some parameters
  49                 $this->params = $this->extractRequestParams();
  50
  51                 $prop = array_flip( $this->params['prop'] );
  52                 $this->fld_ids = isset( $prop['ids'] );
  53                 $this->fld_title = isset( $prop['title'] );
  54                 $this->fld_comment = isset( $prop['comment'] );
  55                 $this->fld_parsedcomment = isset ( $prop['parsedcomment'] );
  56                 $this->fld_size = isset( $prop['size'] );
  57                 $this->fld_flags = isset( $prop['flags'] );
  58                 $this->fld_timestamp = isset( $prop['timestamp'] );
  59                 $this->fld_patrolled = isset( $prop['patrolled'] );
  60                 $this->fld_tags = isset( $prop['tags'] );
  61
  62                 // TODO: if the query is going only against the revision table, should this be done?
  63                 $this->selectNamedDB( 'contributions', DB_SLAVE, 'contributions' );
  64
  65                 if ( isset( $this->params['userprefix'] ) ) {
  66                         $this->prefixMode = true;
  67                         $this->multiUserMode = true;
  68                         $this->userprefix = $this->params['userprefix'];
  69                 } else {
  70                         $this->usernames = array();
  71                         if ( !is_array( $this->params['user'] ) ) {
  72                                 $this->params['user'] = array( $this->params['user'] );
  73                         }
  74                         if ( !count( $this->params['user'] ) ) {
  75                                 $this->dieUsage( 'User parameter may not be empty.', 'param_user' );
  76                         }
  77                         foreach ( $this->params['user'] as $u ) {
  78                                 $this->prepareUsername( $u );
  79                         }
  80                         $this->prefixMode = false;
  81                         $this->multiUserMode = ( count( $this->params['user'] ) > 1 );
  82                 }
  83                 $this->prepareQuery();
  84
  85                 // Do the actual query.
  86                 $res = $this->select( __METHOD__ );
  87
  88                 // Initialise some variables
  89                 $count = 0;
  90                 $limit = $this->params['limit'];
  91
  92                 // Fetch each row
  93                 foreach ( $res as $row ) {
  94                         if ( ++ $count > $limit ) {
  95                                 // We've reached the one extra which shows that there are additional pages to be had. Stop here...
  96                                 if ( $this->multiUserMode ) {
  97                                         $this->setContinueEnumParameter( 'continue', $this->continueStr( $row ) );
  98                                 } else {
  99                                         $this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->rev_timestamp ) );
 100                                 }
 101                                 break;
 102                         }
 103
 104                         $vals = $this->extractRowInfo( $row );
 105                         $fit = $this->getResult()->addValue( array( 'query', $this->getModuleName() ), null, $vals );
 106                         if ( !$fit ) {
 107                                 if ( $this->multiUserMode ) {
 108                                         $this->setContinueEnumParameter( 'continue', $this->continueStr( $row ) );
 109                                 } else {
 110                                         $this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->rev_timestamp ) );
 111                                 }
 112                                 break;
 113                         }
 114                 }
 115
 116                 $this->getResult()->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'item' );
 117         }
 118
 119         /**
 120          * Validate the 'user' parameter and set the value to compare
 121          * against `revision`.`rev_user_text`
 122          */
 123         private function prepareUsername( $user ) {
 124                 if ( !is_null( $user ) && $user !== '' ) {
 125                         $name = User::isIP( $user )
 126                                 ? $user
 127                                 : User::getCanonicalName( $user, 'valid' );
 128                         if ( $name === false ) {
 129                                 $this->dieUsage( "User name {$user} is not valid", 'param_user' );
 130                         } else {
 131                                 $this->usernames[] = $name;
 132                         }
 133                 } else {
 134                         $this->dieUsage( 'User parameter may not be empty', 'param_user' );
 135                 }
 136         }
 137
 138         /**
 139          * Prepares the query and returns the limit of rows requested
 140          */
 141         private function prepareQuery() {
 142                 // We're after the revision table, and the corresponding page
 143                 // row for anything we retrieve. We may also need the
 144                 // recentchanges row and/or tag summary row.
 145                 global $wgUser;
 146                 $tables = array( 'page', 'revision' ); // Order may change
 147                 $this->addWhere( 'page_id=rev_page' );
 148
 149                 // Handle continue parameter
 150                 if ( $this->multiUserMode && !is_null( $this->params['continue'] ) ) {
 151                         $continue = explode( '|', $this->params['continue'] );
 152                         if ( count( $continue ) != 2 ) {
 153                                 $this->dieUsage( 'Invalid continue param. You should pass the original ' .
 154                                         'value returned by the previous query', '_badcontinue' );
 155                         }
 156                         $encUser = $this->getDB()->strencode( $continue[0] );
 157                         $encTS = wfTimestamp( TS_MW, $continue[1] );
 158                         $op = ( $this->params['dir'] == 'older' ? '<' : '>' );
 159                         $this->addWhere(
 160                                 "rev_user_text $op '$encUser' OR " .
 161                                 "(rev_user_text = '$encUser' AND " .
 162                                 "rev_timestamp $op= '$encTS')"
 163                         );
 164                 }
 165
 166                 if ( !$wgUser->isAllowed( 'hideuser' ) ) {
 167                         $this->addWhere( $this->getDB()->bitAnd( 'rev_deleted', Revision::DELETED_USER ) . ' = 0' );
 168                 }
 169                 // We only want pages by the specified users.
 170                 if ( $this->prefixMode ) {
 171                         $this->addWhere( 'rev_user_text' . $this->getDB()->buildLike( $this->userprefix, $this->getDB()->anyString() ) );
 172                 } else {
 173                         $this->addWhereFld( 'rev_user_text', $this->usernames );
 174                 }
 175                 // ... and in the specified timeframe.
 176                 // Ensure the same sort order for rev_user_text and rev_timestamp
 177                 // so our query is indexed
 178                 if ( $this->multiUserMode ) {
 179                         $this->addWhereRange( 'rev_user_text', $this->params['dir'], null, null );
 180                 }
 181                 $this->addWhereRange( 'rev_timestamp',
 182                         $this->params['dir'], $this->params['start'], $this->params['end'] );
 183                 $this->addWhereFld( 'page_namespace', $this->params['namespace'] );
 184
 185                 $show = $this->params['show'];
 186                 if ( !is_null( $show ) ) {
 187                         $show = array_flip( $show );
 188                         if ( ( isset( $show['minor'] ) && isset( $show['!minor'] ) )
 189                                         || ( isset( $show['patrolled'] ) && isset( $show['!patrolled'] ) ) ) {
 190                                 $this->dieUsageMsg( array( 'show' ) );
 191                         }
 192
 193                         $this->addWhereIf( 'rev_minor_edit = 0', isset( $show['!minor'] ) );
 194                         $this->addWhereIf( 'rev_minor_edit != 0', isset( $show['minor'] ) );
 195                         $this->addWhereIf( 'rc_patrolled = 0', isset( $show['!patrolled'] ) );
 196                         $this->addWhereIf( 'rc_patrolled != 0', isset( $show['patrolled'] ) );
 197                 }
 198                 $this->addOption( 'LIMIT', $this->params['limit'] + 1 );
 199                 $index = array( 'revision' => 'usertext_timestamp' );
 200
 201                 // Mandatory fields: timestamp allows request continuation
 202                 // ns+title checks if the user has access rights for this page
 203                 // user_text is necessary if multiple users were specified
 204                 $this->addFields( array(
 205                         'rev_timestamp',
 206                         'page_namespace',
 207                         'page_title',
 208                         'rev_user_text',
 209                         'rev_deleted'
 210                 ) );
 211
 212                 if ( isset( $show['patrolled'] ) || isset( $show['!patrolled'] ) ||
 213                                  $this->fld_patrolled ) {
 214                         if ( !$wgUser->useRCPatrol() && !$wgUser->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( 'rev_minor_edit', $this->fld_flags );
 248                 $this->addFieldsIf( 'rev_parent_id', $this->fld_flags );
 249                 $this->addFieldsIf( 'rc_patrolled', $this->fld_patrolled );
 250
 251                 if ( $this->fld_tags ) {
 252                         $this->addTables( 'tag_summary' );
 253                         $this->addJoinConds( array( 'tag_summary' => array( 'LEFT JOIN', array( 'rev_id=ts_rev_id' ) ) ) );
 254                         $this->addFields( 'ts_tags' );
 255                 }
 256
 257                 if ( isset( $this->params['tag'] ) ) {
 258                         $this->addTables( 'change_tag' );
 259                         $this->addJoinConds( array( 'change_tag' => array( 'INNER JOIN', array( 'rev_id=ct_rev_id' ) ) ) );
 260                         $this->addWhereFld( 'ct_tag', $this->params['tag'] );
 261                         global $wgOldChangeTagsIndex;
 262                         $index['change_tag'] = $wgOldChangeTagsIndex ? 'ct_tag' : 'change_tag_tag_id';
 263                 }
 264
 265                 $this->addOption( 'USE INDEX', $index );
 266         }
 267
 268         /**
 269          * Extract fields from the database row and append them to a result array
 270          */
 271         private function extractRowInfo( $row ) {
 272                 $vals = array();
 273
 274                 $vals['user'] = $row->rev_user_text;
 275                 if ( $row->rev_deleted & Revision::DELETED_USER ) {
 276                         $vals['userhidden'] = '';
 277                 }
 278                 if ( $this->fld_ids ) {
 279                         $vals['pageid'] = intval( $row->rev_page );
 280                         $vals['revid'] = intval( $row->rev_id );
 281                         // $vals['textid'] = intval( $row->rev_text_id ); // todo: Should this field be exposed?
 282                 }
 283
 284                 $title = Title::makeTitle( $row->page_namespace, $row->page_title );
 285
 286                 if ( $this->fld_title ) {
 287                         ApiQueryBase::addTitleInfo( $vals, $title );
 288                 }
 289
 290                 if ( $this->fld_timestamp ) {
 291                         $vals['timestamp'] = wfTimestamp( TS_ISO_8601, $row->rev_timestamp );
 292                 }
 293
 294                 if ( $this->fld_flags ) {
 295                         if ( $row->rev_parent_id == 0 && !is_null( $row->rev_parent_id ) ) {
 296                                 $vals['new'] = '';
 297                         }
 298                         if ( $row->rev_minor_edit ) {
 299                                 $vals['minor'] = '';
 300                         }
 301                         if ( $row->page_latest == $row->rev_id ) {
 302                                 $vals['top'] = '';
 303                         }
 304                 }
 305
 306                 if ( ( $this->fld_comment || $this->fld_parsedcomment ) && isset( $row->rev_comment ) ) {
 307                         if ( $row->rev_deleted & Revision::DELETED_COMMENT ) {
 308                                 $vals['commenthidden'] = '';
 309                         } else {
 310                                 if ( $this->fld_comment ) {
 311                                         $vals['comment'] = $row->rev_comment;
 312                                 }
 313
 314                                 if ( $this->fld_parsedcomment ) {
 315                                         global $wgUser;
 316                                         $vals['parsedcomment'] = $wgUser->getSkin()->formatComment( $row->rev_comment, $title );
 317                                 }
 318                         }
 319                 }
 320
 321                 if ( $this->fld_patrolled && $row->rc_patrolled ) {
 322                         $vals['patrolled'] = '';
 323                 }
 324
 325                 if ( $this->fld_size && !is_null( $row->rev_len ) ) {
 326                         $vals['size'] = intval( $row->rev_len );
 327                 }
 328
 329                 if ( $this->fld_tags ) {
 330                         if ( $row->ts_tags ) {
 331                                 $tags = explode( ',', $row->ts_tags );
 332                                 $this->getResult()->setIndexedTagName( $tags, 'tag' );
 333                                 $vals['tags'] = $tags;
 334                         } else {
 335                                 $vals['tags'] = array();
 336                         }
 337                 }
 338
 339                 return $vals;
 340         }
 341
 342         private function continueStr( $row ) {
 343                 return $row->rev_user_text . '|' .
 344                         wfTimestamp( TS_ISO_8601, $row->rev_timestamp );
 345         }
 346
 347         public function getCacheMode( $params ) {
 348                 // This module provides access to deleted revisions and patrol flags if
 349                 // the requester is logged in
 350                 return 'anon-public-user-private';
 351         }
 352
 353         public function getAllowedParams() {
 354                 return array(
 355                         'limit' => array(
 356                                 ApiBase::PARAM_DFLT => 10,
 357                                 ApiBase::PARAM_TYPE => 'limit',
 358                                 ApiBase::PARAM_MIN => 1,
 359                                 ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
 360                                 ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
 361                         ),
 362                         'start' => array(
 363                                 ApiBase::PARAM_TYPE => 'timestamp'
 364                         ),
 365                         'end' => array(
 366                                 ApiBase::PARAM_TYPE => 'timestamp'
 367                         ),
 368                         'continue' => null,
 369                         'user' => array(
 370                                 ApiBase::PARAM_ISMULTI => true
 371                         ),
 372                         'userprefix' => null,
 373                         'dir' => array(
 374                                 ApiBase::PARAM_DFLT => 'older',
 375                                 ApiBase::PARAM_TYPE => array(
 376                                         'newer',
 377                                         'older'
 378                                 )
 379                         ),
 380                         'namespace' => array(
 381                                 ApiBase::PARAM_ISMULTI => true,
 382                                 ApiBase::PARAM_TYPE => 'namespace'
 383                         ),
 384                         'prop' => array(
 385                                 ApiBase::PARAM_ISMULTI => true,
 386                                 ApiBase::PARAM_DFLT => 'ids|title|timestamp|comment|size|flags',
 387                                 ApiBase::PARAM_TYPE => array(
 388                                         'ids',
 389                                         'title',
 390                                         'timestamp',
 391                                         'comment',
 392                                         'parsedcomment',
 393                                         'size',
 394                                         'flags',
 395                                         'patrolled',
 396                                         'tags'
 397                                 )
 398                         ),
 399                         'show' => array(
 400                                 ApiBase::PARAM_ISMULTI => true,
 401                                 ApiBase::PARAM_TYPE => array(
 402                                         'minor',
 403                                         '!minor',
 404                                         'patrolled',
 405                                         '!patrolled',
 406                                 )
 407                         ),
 408                         'tag' => null,
 409                 );
 410         }
 411
 412         public function getParamDescription() {
 413                 global $wgRCMaxAge;
 414                 $p = $this->getModulePrefix();
 415                 return array(
 416                         'limit' => 'The maximum number of contributions to return',
 417                         'start' => 'The start timestamp to return from',
 418                         'end' => 'The end timestamp to return to',
 419                         'continue' => 'When more results are available, use this to continue',
 420                         'user' => 'The users to retrieve contributions for',
 421                         'userprefix' => "Retrieve contibutions for all users whose names begin with this value. Overrides {$p}user",
 422                         'dir' => 'The direction to search (older or newer)',
 423                         'namespace' => 'Only list contributions in these namespaces',
 424                         'prop' => array(
 425                                 'Include additional pieces of information',
 426                                 ' ids            - Adds the page id and revision id',
 427                                 ' title          - Adds the title and namespace id of the page',
 428                                 ' timestamp      - Adds the timestamp of the edit',
 429                                 ' comment        - Adds the comment of the edit',
 430                                 ' parsedcomment  - Adds the parsed comment of the edit',
 431                                 ' size           - Adds the size of the page',
 432                                 ' flags          - Adds flags of the edit',
 433                                 ' patrolled      - Tags patrolled edits',
 434                                 ' tags           - Lists tags for the edit',
 435                         ),
 436                         'show' => array( "Show only items that meet this criteria, e.g. non minor edits only: {$p}show=!minor",
 437                                         "NOTE: if {$p}show=patrolled or {$p}show=!patrolled is set, revisions older than $wgRCMaxAge won\'t be shown", ),
 438                         'tag' => 'Only list revisions tagged with this tag',
 439                 );
 440         }
 441
 442         public function getDescription() {
 443                 return 'Get all edits by a user';
 444         }
 445
 446         public function getPossibleErrors() {
 447                 return array_merge( parent::getPossibleErrors(), array(
 448                         array( 'code' => 'param_user', 'info' => 'User parameter may not be empty.' ),
 449                         array( 'code' => 'param_user', 'info' => 'User name user is not valid' ),
 450                         array( 'show' ),
 451                         array( 'code' => 'permissiondenied', 'info' => 'You need the patrol right to request the patrolled flag' ),
 452                 ) );
 453         }
 454
 455         protected function getExamples() {
 456                 return array(
 457                         'api.php?action=query&list=usercontribs&ucuser=YurikBot',
 458                         'api.php?action=query&list=usercontribs&ucuserprefix=217.121.114.',
 459                 );
 460         }
 461
 462         public function getVersion() {
 463                 return __CLASS__ . ': $Id$';
 464         }
 465 }