includes/api/ApiQueryUserContributions.php

   1 <?php
   2
   3 /*
   4  * Created on Oct 16, 2006
   5  *
   6  * API for MediaWiki 1.8+
   7  *
   8  * Copyright (C) 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  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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, $username;
  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                 $db = $this->getDB();
  65
  66                 if ( isset( $this->params['userprefix'] ) )
  67                 {
  68                         $this->prefixMode = true;
  69                         $this->multiUserMode = true;
  70                         $this->userprefix = $this->params['userprefix'];
  71                 }
  72                 else
  73                 {
  74                         $this->usernames = array();
  75                         if ( !is_array( $this->params['user'] ) )
  76                                 $this->params['user'] = array( $this->params['user'] );
  77                         if ( !count( $this->params['user'] ) )
  78                                 $this->dieUsage( 'User parameter may not be empty.', 'param_user' );
  79                         foreach ( $this->params['user'] as $u )
  80                                 $this->prepareUsername( $u );
  81                         $this->prefixMode = false;
  82                         $this->multiUserMode = ( count( $this->params['user'] ) > 1 );
  83                 }
  84                 $this->prepareQuery();
  85
  86                 // Do the actual query.
  87                 $res = $this->select( __METHOD__ );
  88
  89                 // Initialise some variables
  90                 $count = 0;
  91                 $limit = $this->params['limit'];
  92
  93                 // Fetch each row
  94                 while ( $row = $db->fetchObject( $res ) ) {
  95                         if ( ++ $count > $limit ) {
  96                                 // We've reached the one extra which shows that there are additional pages to be had. Stop here...
  97                                 if ( $this->multiUserMode )
  98                                         $this->setContinueEnumParameter( 'continue', $this->continueStr( $row ) );
  99                                 else
 100                                         $this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->rev_timestamp ) );
 101                                 break;
 102                         }
 103
 104                         $vals = $this->extractRowInfo( $row );
 105                         $fit = $this->getResult()->addValue( array( 'query', $this->getModuleName() ), null, $vals );
 106                         if ( !$fit )
 107                         {
 108                                 if ( $this->multiUserMode )
 109                                         $this->setContinueEnumParameter( 'continue', $this->continueStr( $row ) );
 110                                 else
 111                                         $this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->rev_timestamp ) );
 112                                 break;
 113                         }
 114                 }
 115
 116                 // Free the database record so the connection can get on with other stuff
 117                 $db->freeResult( $res );
 118
 119                 $this->getResult()->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'item' );
 120         }
 121
 122         /**
 123          * Validate the 'user' parameter and set the value to compare
 124          * against `revision`.`rev_user_text`
 125          */
 126         private function prepareUsername( $user ) {
 127                 if ( !is_null( $user ) && $user !== '' ) {
 128                         $name = User::isIP( $user )
 129                                 ? $user
 130                                 : User::getCanonicalName( $user, 'valid' );
 131                         if ( $name === false ) {
 132                                 $this->dieUsage( "User name {$user} is not valid", 'param_user' );
 133                         } else {
 134                                 $this->usernames[] = $name;
 135                         }
 136                 } else {
 137                         $this->dieUsage( 'User parameter may not be empty', 'param_user' );
 138                 }
 139         }
 140
 141         /**
 142          * Prepares the query and returns the limit of rows requested
 143          */
 144         private function prepareQuery() {
 145                 // We're after the revision table, and the corresponding page
 146                 // row for anything we retrieve. We may also need the
 147                 // recentchanges row and/or tag summary row.
 148                 global $wgUser;
 149                 $tables = array( 'page', 'revision' ); // Order may change
 150                 $this->addWhere( 'page_id=rev_page' );
 151
 152                 // Handle continue parameter
 153                 if ( $this->multiUserMode && !is_null( $this->params['continue'] ) )
 154                 {
 155                         $continue = explode( '|', $this->params['continue'] );
 156                         if ( count( $continue ) != 2 )
 157                                 $this->dieUsage( "Invalid continue param. You should pass the original " .
 158                                         "value returned by the previous query", "_badcontinue" );
 159                         $encUser = $this->getDB()->strencode( $continue[0] );
 160                         $encTS = wfTimestamp( TS_MW, $continue[1] );
 161                         $op = ( $this->params['dir'] == 'older' ? '<' : '>' );
 162                         $this->addWhere( "rev_user_text $op '$encUser' OR " .
 163                                         "(rev_user_text = '$encUser' AND " .
 164                                         "rev_timestamp $op= '$encTS')" );
 165                 }
 166
 167                 if ( !$wgUser->isAllowed( 'hideuser' ) )
 168                         $this->addWhere( $this->getDB()->bitAnd( 'rev_deleted', Revision::DELETED_USER ) . ' = 0' );
 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                 // ... 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                 $this->addWhereRange( 'rev_timestamp',
 180                         $this->params['dir'], $this->params['start'], $this->params['end'] );
 181                 $this->addWhereFld( 'page_namespace', $this->params['namespace'] );
 182
 183                 $show = $this->params['show'];
 184                 if ( !is_null( $show ) ) {
 185                         $show = array_flip( $show );
 186                         if ( ( isset( $show['minor'] ) && isset( $show['!minor'] ) )
 187                                         || ( isset( $show['patrolled'] ) && isset( $show['!patrolled'] ) ) )
 188                                 $this->dieUsageMsg( array( 'show' ) );
 189
 190                         $this->addWhereIf( 'rev_minor_edit = 0', isset( $show['!minor'] ) );
 191                         $this->addWhereIf( 'rev_minor_edit != 0', isset( $show['minor'] ) );
 192                         $this->addWhereIf( 'rc_patrolled = 0', isset( $show['!patrolled'] ) );
 193                         $this->addWhereIf( 'rc_patrolled != 0', isset( $show['patrolled'] ) );
 194                 }
 195                 $this->addOption( 'LIMIT', $this->params['limit'] + 1 );
 196                 $index = array( 'revision' => 'usertext_timestamp' );
 197
 198                 // Mandatory fields: timestamp allows request continuation
 199                 // ns+title checks if the user has access rights for this page
 200                 // user_text is necessary if multiple users were specified
 201                 $this->addFields( array(
 202                         'rev_timestamp',
 203                         'page_namespace',
 204                         'page_title',
 205                         'rev_user_text',
 206                         'rev_deleted'
 207                 ) );
 208
 209                 if ( isset( $show['patrolled'] ) || isset( $show['!patrolled'] ) ||
 210                                  $this->fld_patrolled )
 211                 {
 212                         global $wgUser;
 213                         if ( !$wgUser->useRCPatrol() && !$wgUser->useNPPatrol() )
 214                                 $this->dieUsage( "You need the patrol right to request the patrolled flag", 'permissiondenied' );
 215                         // Use a redundant join condition on both
 216                         // timestamp and ID so we can use the timestamp
 217                         // index
 218                         $index['recentchanges'] = 'rc_user_text';
 219                         if ( isset( $show['patrolled'] ) || isset( $show['!patrolled'] ) )
 220                         {
 221                                 // Put the tables in the right order for
 222                                 // STRAIGHT_JOIN
 223                                 $tables = array( 'revision', 'recentchanges', 'page' );
 224                                 $this->addOption( 'STRAIGHT_JOIN' );
 225                                 $this->addWhere( 'rc_user_text=rev_user_text' );
 226                                 $this->addWhere( 'rc_timestamp=rev_timestamp' );
 227                                 $this->addWhere( 'rc_this_oldid=rev_id' );
 228                         }
 229                         else
 230                         {
 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                 {
 253                         $this->addTables( 'tag_summary' );
 254                         $this->addJoinConds( array( 'tag_summary' => array( 'LEFT JOIN', array( 'rev_id=ts_rev_id' ) ) ) );
 255                         $this->addFields( 'ts_tags' );
 256                 }
 257
 258                 if ( isset( $this->params['tag'] ) ) {
 259                         $this->addTables( 'change_tag' );
 260                         $this->addJoinConds( array( 'change_tag' => array( 'INNER JOIN', array( 'rev_id=ct_rev_id' ) ) ) );
 261                         $this->addWhereFld( 'ct_tag', $this->params['tag'] );
 262                         global $wgOldChangeTagsIndex;
 263                         $index['change_tag'] = $wgOldChangeTagsIndex ?  'ct_tag' : 'change_tag_tag_id';
 264                 }
 265
 266                 $this->addOption( 'USE INDEX', $index );
 267         }
 268
 269         /**
 270          * Extract fields from the database row and append them to a result array
 271          */
 272         private function extractRowInfo( $row ) {
 273
 274                 $vals = array();
 275
 276                 $vals['user'] = $row->rev_user_text;
 277                 if ( $row->rev_deleted & Revision::DELETED_USER )
 278                         $vals['userhidden'] = '';
 279                 if ( $this->fld_ids ) {
 280                         $vals['pageid'] = intval( $row->rev_page );
 281                         $vals['revid'] = intval( $row->rev_id );
 282                         // $vals['textid'] = intval($row->rev_text_id); // todo: Should this field be exposed?
 283                 }
 284
 285                 $title = Title::makeTitle( $row->page_namespace, $row->page_title );
 286
 287                 if ( $this->fld_title )
 288                         ApiQueryBase::addTitleInfo( $vals, $title );
 289
 290                 if ( $this->fld_timestamp )
 291                         $vals['timestamp'] = wfTimestamp( TS_ISO_8601, $row->rev_timestamp );
 292
 293                 if ( $this->fld_flags ) {
 294                         if ( $row->rev_parent_id == 0 && !is_null( $row->rev_parent_id ) )
 295                                 $vals['new'] = '';
 296                         if ( $row->rev_minor_edit )
 297                                 $vals['minor'] = '';
 298                         if ( $row->page_latest == $row->rev_id )
 299                                 $vals['top'] = '';
 300                 }
 301
 302                 if ( ( $this->fld_comment || $this->fld_parsedcomment ) && isset( $row->rev_comment ) ) {
 303                         if ( $row->rev_deleted & Revision::DELETED_COMMENT )
 304                                 $vals['commenthidden'] = '';
 305                         else {
 306                                 if ( $this->fld_comment )
 307                                         $vals['comment'] = $row->rev_comment;
 308
 309                                 if ( $this->fld_parsedcomment ) {
 310                                         global $wgUser;
 311                                         $vals['parsedcomment'] = $wgUser->getSkin()->formatComment( $row->rev_comment, $title );
 312                                 }
 313                         }
 314                 }
 315
 316                 if ( $this->fld_patrolled && $row->rc_patrolled )
 317                         $vals['patrolled'] = '';
 318
 319                 if ( $this->fld_size && !is_null( $row->rev_len ) )
 320                         $vals['size'] = intval( $row->rev_len );
 321
 322                 if ( $this->fld_tags ) {
 323                         if ( $row->ts_tags ) {
 324                                 $tags = explode( ',', $row->ts_tags );
 325                                 $this->getResult()->setIndexedTagName( $tags, 'tag' );
 326                                 $vals['tags'] = $tags;
 327                         } else {
 328                                 $vals['tags'] = array();
 329                         }
 330                 }
 331
 332                 return $vals;
 333         }
 334
 335         private function continueStr( $row )
 336         {
 337                 return $row->rev_user_text . '|' .
 338                         wfTimestamp( TS_ISO_8601, $row->rev_timestamp );
 339         }
 340
 341         public function getCacheMode( $params ) {
 342                 // This module provides access to deleted revisions and patrol flags if
 343                 // the requester is logged in
 344                 return 'anon-public-user-private';
 345         }
 346
 347         public function getAllowedParams() {
 348                 return array (
 349                         'limit' => array (
 350                                 ApiBase :: PARAM_DFLT => 10,
 351                                 ApiBase :: PARAM_TYPE => 'limit',
 352                                 ApiBase :: PARAM_MIN => 1,
 353                                 ApiBase :: PARAM_MAX => ApiBase :: LIMIT_BIG1,
 354                                 ApiBase :: PARAM_MAX2 => ApiBase :: LIMIT_BIG2
 355                         ),
 356                         'start' => array (
 357                                 ApiBase :: PARAM_TYPE => 'timestamp'
 358                         ),
 359                         'end' => array (
 360                                 ApiBase :: PARAM_TYPE => 'timestamp'
 361                         ),
 362                         'continue' => null,
 363                         'user' => array (
 364                                 ApiBase :: PARAM_ISMULTI => true
 365                         ),
 366                         'userprefix' => null,
 367                         'dir' => array (
 368                                 ApiBase :: PARAM_DFLT => 'older',
 369                                 ApiBase :: PARAM_TYPE => array (
 370                                         'newer',
 371                                         'older'
 372                                 )
 373                         ),
 374                         'namespace' => array (
 375                                 ApiBase :: PARAM_ISMULTI => true,
 376                                 ApiBase :: PARAM_TYPE => 'namespace'
 377                         ),
 378                         'prop' => array (
 379                                 ApiBase :: PARAM_ISMULTI => true,
 380                                 ApiBase :: PARAM_DFLT => 'ids|title|timestamp|comment|size|flags',
 381                                 ApiBase :: PARAM_TYPE => array (
 382                                         'ids',
 383                                         'title',
 384                                         'timestamp',
 385                                         'comment',
 386                                         'parsedcomment',
 387                                         'size',
 388                                         'flags',
 389                                         'patrolled',
 390                                         'tags'
 391                                 )
 392                         ),
 393                         'show' => array (
 394                                 ApiBase :: PARAM_ISMULTI => true,
 395                                 ApiBase :: PARAM_TYPE => array (
 396                                         'minor',
 397                                         '!minor',
 398                                         'patrolled',
 399                                         '!patrolled',
 400                                 )
 401                         ),
 402                         'tag' => null,
 403                 );
 404         }
 405
 406         public function getParamDescription() {
 407                 return array (
 408                         'limit' => 'The maximum number of contributions to return.',
 409                         'start' => 'The start timestamp to return from.',
 410                         'end' => 'The end timestamp to return to.',
 411                         'continue' => 'When more results are available, use this to continue.',
 412                         'user' => 'The user to retrieve contributions for.',
 413                         'userprefix' => 'Retrieve contibutions for all users whose names begin with this value. Overrides ucuser.',
 414                         'dir' => 'The direction to search (older or newer).',
 415                         'namespace' => 'Only list contributions in these namespaces',
 416                         'prop' => 'Include additional pieces of information',
 417                         'show' => array( 'Show only items that meet this criteria, e.g. non minor edits only: show=!minor',
 418                                         'NOTE: if show=patrolled or show=!patrolled is set, revisions older than $wgRCMaxAge won\'t be shown', ),
 419                         'tag' => 'Only list revisions tagged with this tag',
 420                 );
 421         }
 422
 423         public function getDescription() {
 424                 return 'Get all edits by a user';
 425         }
 426
 427         public function getPossibleErrors() {
 428                 return array_merge( parent::getPossibleErrors(), array(
 429                         array( 'code' => 'param_user', 'info' => 'User parameter may not be empty.' ),
 430                         array( 'code' => 'param_user', 'info' => 'User name user is not valid' ),
 431                         array( 'show' ),
 432                         array( 'code' => 'permissiondenied', 'info' => 'You need the patrol right to request the patrolled flag' ),
 433                 ) );
 434         }
 435
 436         protected function getExamples() {
 437                 return array (
 438                         'api.php?action=query&list=usercontribs&ucuser=YurikBot',
 439                         'api.php?action=query&list=usercontribs&ucuserprefix=217.121.114.',
 440                 );
 441         }
 442
 443         public function getVersion() {
 444                 return __CLASS__ . ': $Id: ApiQueryUserContributions.php 69932 2010-07-26 08:03:21Z tstarling $';
 445         }
 446 }