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_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_size = isset( $prop['size'] );
  56                 $this->fld_flags = isset( $prop['flags'] );
  57                 $this->fld_timestamp = isset( $prop['timestamp'] );
  58                 $this->fld_patrolled = isset( $prop['patrolled'] );
  59                 $this->fld_tags = isset( $prop['tags'] );
  60
  61                 // TODO: if the query is going only against the revision table, should this be done?
  62                 $this->selectNamedDB( 'contributions', DB_SLAVE, 'contributions' );
  63                 $db = $this->getDB();
  64
  65                 if ( isset( $this->params['userprefix'] ) )
  66                 {
  67                         $this->prefixMode = true;
  68                         $this->multiUserMode = true;
  69                         $this->userprefix = $this->params['userprefix'];
  70                 }
  71                 else
  72                 {
  73                         $this->usernames = array();
  74                         if ( !is_array( $this->params['user'] ) )
  75                                 $this->params['user'] = array( $this->params['user'] );
  76                         if ( !count( $this->params['user'] ) )
  77                                 $this->dieUsage( 'User parameter may not be empty.', 'param_user' );
  78                         foreach ( $this->params['user'] as $u )
  79                                 $this->prepareUsername( $u );
  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                 while ( $row = $db->fetchObject( $res ) ) {
  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                                 break;
 101                         }
 102
 103                         $vals = $this->extractRowInfo( $row );
 104                         $fit = $this->getResult()->addValue( array( 'query', $this->getModuleName() ), null, $vals );
 105                         if ( !$fit )
 106                         {
 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                                 break;
 112                         }
 113                 }
 114
 115                 // Free the database record so the connection can get on with other stuff
 116                 $db->freeResult( $res );
 117
 118                 $this->getResult()->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'item' );
 119         }
 120
 121         /**
 122          * Validate the 'user' parameter and set the value to compare
 123          * against `revision`.`rev_user_text`
 124          */
 125         private function prepareUsername( $user ) {
 126                 if ( !is_null( $user ) && $user !== '' ) {
 127                         $name = User::isIP( $user )
 128                                 ? $user
 129                                 : User::getCanonicalName( $user, 'valid' );
 130                         if ( $name === false ) {
 131                                 $this->dieUsage( "User name {$user} is not valid", 'param_user' );
 132                         } else {
 133                                 $this->usernames[] = $name;
 134                         }
 135                 } else {
 136                         $this->dieUsage( 'User parameter may not be empty', 'param_user' );
 137                 }
 138         }
 139
 140         /**
 141          * Prepares the query and returns the limit of rows requested
 142          */
 143         private function prepareQuery() {
 144                 // We're after the revision table, and the corresponding page
 145                 // row for anything we retrieve. We may also need the
 146                 // recentchanges row and/or tag summary row.
 147                 global $wgUser;
 148                 $tables = array( 'page', 'revision' ); // Order may change
 149                 $this->addWhere( 'page_id=rev_page' );
 150
 151                 // Handle continue parameter
 152                 if ( $this->multiUserMode && !is_null( $this->params['continue'] ) )
 153                 {
 154                         $continue = explode( '|', $this->params['continue'] );
 155                         if ( count( $continue ) != 2 )
 156                                 $this->dieUsage( "Invalid continue param. You should pass the original " .
 157                                         "value returned by the previous query", "_badcontinue" );
 158                         $encUser = $this->getDB()->strencode( $continue[0] );
 159                         $encTS = wfTimestamp( TS_MW, $continue[1] );
 160                         $op = ( $this->params['dir'] == 'older' ? '<' : '>' );
 161                         $this->addWhere( "rev_user_text $op '$encUser' OR " .
 162                                         "(rev_user_text = '$encUser' AND " .
 163                                         "rev_timestamp $op= '$encTS')" );
 164                 }
 165
 166                 if ( !$wgUser->isAllowed( 'hideuser' ) )
 167                         $this->addWhere( $this->getDB()->bitAnd( 'rev_deleted', Revision::DELETED_USER ) . ' = 0' );
 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                 // ... and in the specified timeframe.
 174                 // Ensure the same sort order for rev_user_text and rev_timestamp
 175                 // so our query is indexed
 176                 if ( $this->multiUserMode )
 177                         $this->addWhereRange( 'rev_user_text', $this->params['dir'], null, null );
 178                 $this->addWhereRange( 'rev_timestamp',
 179                         $this->params['dir'], $this->params['start'], $this->params['end'] );
 180                 $this->addWhereFld( 'page_namespace', $this->params['namespace'] );
 181
 182                 $show = $this->params['show'];
 183                 if ( !is_null( $show ) ) {
 184                         $show = array_flip( $show );
 185                         if ( ( isset( $show['minor'] ) && isset( $show['!minor'] ) )
 186                                         || ( isset( $show['patrolled'] ) && isset( $show['!patrolled'] ) ) )
 187                                 $this->dieUsage( "Incorrect parameter - mutually exclusive values may not be supplied", 'show' );
 188
 189                         $this->addWhereIf( 'rev_minor_edit = 0', isset( $show['!minor'] ) );
 190                         $this->addWhereIf( 'rev_minor_edit != 0', isset( $show['minor'] ) );
 191                         $this->addWhereIf( 'rc_patrolled = 0', isset( $show['!patrolled'] ) );
 192                         $this->addWhereIf( 'rc_patrolled != 0', isset( $show['patrolled'] ) );
 193                 }
 194                 $this->addOption( 'LIMIT', $this->params['limit'] + 1 );
 195                 $index['revision'] = 'usertext_timestamp';
 196
 197                 // Mandatory fields: timestamp allows request continuation
 198                 // ns+title checks if the user has access rights for this page
 199                 // user_text is necessary if multiple users were specified
 200                 $this->addFields( array(
 201                         'rev_timestamp',
 202                         'page_namespace',
 203                         'page_title',
 204                         'rev_user_text',
 205                         'rev_deleted'
 206                 ) );
 207
 208                 if ( isset( $show['patrolled'] ) || isset( $show['!patrolled'] ) ||
 209                                  $this->fld_patrolled )
 210                 {
 211                         global $wgUser;
 212                         if ( !$wgUser->useRCPatrol() && !$wgUser->useNPPatrol() )
 213                                 $this->dieUsage( "You need the patrol right to request the patrolled flag", 'permissiondenied' );
 214                         // Use a redundant join condition on both
 215                         // timestamp and ID so we can use the timestamp
 216                         // index
 217                         $index['recentchanges'] = 'rc_user_text';
 218                         if ( isset( $show['patrolled'] ) || isset( $show['!patrolled'] ) )
 219                         {
 220                                 // Put the tables in the right order for
 221                                 // STRAIGHT_JOIN
 222                                 $tables = array( 'revision', 'recentchanges', 'page' );
 223                                 $this->addOption( 'STRAIGHT_JOIN' );
 224                                 $this->addWhere( 'rc_user_text=rev_user_text' );
 225                                 $this->addWhere( 'rc_timestamp=rev_timestamp' );
 226                                 $this->addWhere( 'rc_this_oldid=rev_id' );
 227                         }
 228                         else
 229                         {
 230                                 $tables[] = 'recentchanges';
 231                                 $this->addJoinConds( array( 'recentchanges' => array(
 232                                         'LEFT JOIN', array(
 233                                                 'rc_user_text=rev_user_text',
 234                                                 'rc_timestamp=rev_timestamp',
 235                                                 'rc_this_oldid=rev_id' ) ) ) );
 236                         }
 237                 }
 238
 239                 $this->addTables( $tables );
 240                 $this->addOption( 'USE INDEX', $index );
 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 );
 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 ( !is_null( $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                 }
 263         }
 264
 265         /**
 266          * Extract fields from the database row and append them to a result array
 267          */
 268         private function extractRowInfo( $row ) {
 269
 270                 $vals = array();
 271
 272                 $vals['user'] = $row->rev_user_text;
 273                 if ( $row->rev_deleted & Revision::DELETED_USER )
 274                         $vals['userhidden'] = '';
 275                 if ( $this->fld_ids ) {
 276                         $vals['pageid'] = intval( $row->rev_page );
 277                         $vals['revid'] = intval( $row->rev_id );
 278                         // $vals['textid'] = intval($row->rev_text_id); // todo: Should this field be exposed?
 279                 }
 280
 281                 if ( $this->fld_title )
 282                         ApiQueryBase :: addTitleInfo( $vals,
 283                                 Title :: makeTitle( $row->page_namespace, $row->page_title ) );
 284
 285                 if ( $this->fld_timestamp )
 286                         $vals['timestamp'] = wfTimestamp( TS_ISO_8601, $row->rev_timestamp );
 287
 288                 if ( $this->fld_flags ) {
 289                         if ( $row->rev_parent_id == 0 && !is_null( $row->rev_parent_id ) )
 290                                 $vals['new'] = '';
 291                         if ( $row->rev_minor_edit )
 292                                 $vals['minor'] = '';
 293                         if ( $row->page_latest == $row->rev_id )
 294                                 $vals['top'] = '';
 295                 }
 296
 297                 if ( $this->fld_comment && isset( $row->rev_comment ) ) {
 298                         if ( $row->rev_deleted & Revision::DELETED_COMMENT )
 299                                 $vals['commenthidden'] = '';
 300                         else
 301                                 $vals['comment'] = $row->rev_comment;
 302                 }
 303
 304                 if ( $this->fld_patrolled && $row->rc_patrolled )
 305                         $vals['patrolled'] = '';
 306
 307                 if ( $this->fld_size && !is_null( $row->rev_len ) )
 308                         $vals['size'] = intval( $row->rev_len );
 309
 310                 if ( $this->fld_tags ) {
 311                         if ( $row->ts_tags ) {
 312                                 $tags = explode( ',', $row->ts_tags );
 313                                 $this->getResult()->setIndexedTagName( $tags, 'tag' );
 314                                 $vals['tags'] = $tags;
 315                         } else {
 316                                 $vals['tags'] = array();
 317                         }
 318                 }
 319
 320                 return $vals;
 321         }
 322
 323         private function continueStr( $row )
 324         {
 325                 return $row->rev_user_text . '|' .
 326                         wfTimestamp( TS_ISO_8601, $row->rev_timestamp );
 327         }
 328
 329         public function getAllowedParams() {
 330                 return array (
 331                         'limit' => array (
 332                                 ApiBase :: PARAM_DFLT => 10,
 333                                 ApiBase :: PARAM_TYPE => 'limit',
 334                                 ApiBase :: PARAM_MIN => 1,
 335                                 ApiBase :: PARAM_MAX => ApiBase :: LIMIT_BIG1,
 336                                 ApiBase :: PARAM_MAX2 => ApiBase :: LIMIT_BIG2
 337                         ),
 338                         'start' => array (
 339                                 ApiBase :: PARAM_TYPE => 'timestamp'
 340                         ),
 341                         'end' => array (
 342                                 ApiBase :: PARAM_TYPE => 'timestamp'
 343                         ),
 344                         'continue' => null,
 345                         'user' => array (
 346                                 ApiBase :: PARAM_ISMULTI => true
 347                         ),
 348                         'userprefix' => null,
 349                         'dir' => array (
 350                                 ApiBase :: PARAM_DFLT => 'older',
 351                                 ApiBase :: PARAM_TYPE => array (
 352                                         'newer',
 353                                         'older'
 354                                 )
 355                         ),
 356                         'namespace' => array (
 357                                 ApiBase :: PARAM_ISMULTI => true,
 358                                 ApiBase :: PARAM_TYPE => 'namespace'
 359                         ),
 360                         'prop' => array (
 361                                 ApiBase :: PARAM_ISMULTI => true,
 362                                 ApiBase :: PARAM_DFLT => 'ids|title|timestamp|comment|size|flags',
 363                                 ApiBase :: PARAM_TYPE => array (
 364                                         'ids',
 365                                         'title',
 366                                         'timestamp',
 367                                         'comment',
 368                                         'size',
 369                                         'flags',
 370                                         'patrolled',
 371                                         'tags'
 372                                 )
 373                         ),
 374                         'show' => array (
 375                                 ApiBase :: PARAM_ISMULTI => true,
 376                                 ApiBase :: PARAM_TYPE => array (
 377                                         'minor',
 378                                         '!minor',
 379                                         'patrolled',
 380                                         '!patrolled',
 381                                 )
 382                         ),
 383                 );
 384         }
 385
 386         public function getParamDescription() {
 387                 return array (
 388                         'limit' => 'The maximum number of contributions to return.',
 389                         'start' => 'The start timestamp to return from.',
 390                         'end' => 'The end timestamp to return to.',
 391                         'continue' => 'When more results are available, use this to continue.',
 392                         'user' => 'The user to retrieve contributions for.',
 393                         'userprefix' => 'Retrieve contibutions for all users whose names begin with this value. Overrides ucuser.',
 394                         'dir' => 'The direction to search (older or newer).',
 395                         'namespace' => 'Only list contributions in these namespaces',
 396                         'prop' => 'Include additional pieces of information',
 397                         'show' => array( 'Show only items that meet this criteria, e.g. non minor edits only: show=!minor',
 398                                         'NOTE: if show=patrolled or show=!patrolled is set, revisions older than $wgRCMaxAge won\'t be shown', ),
 399                 );
 400         }
 401
 402         public function getDescription() {
 403                 return 'Get all edits by a user';
 404         }
 405
 406         protected function getExamples() {
 407                 return array (
 408                         'api.php?action=query&list=usercontribs&ucuser=YurikBot',
 409                         'api.php?action=query&list=usercontribs&ucuserprefix=217.121.114.',
 410                 );
 411         }
 412
 413         public function getVersion() {
 414                 return __CLASS__ . ': $Id$';
 415         }
 416 }