includes/api/ApiQueryWatchlist.php

   1 <?php
   2 /**
   3  *
   4  *
   5  * Created on Sep 25, 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 allows clients to retrieve a list of recently modified pages
  29  * that are part of the logged-in user's watchlist.
  30  *
  31  * @ingroup API
  32  */
  33 class ApiQueryWatchlist extends ApiQueryGeneratorBase {
  34
  35         public function __construct( $query, $moduleName ) {
  36                 parent::__construct( $query, $moduleName, 'wl' );
  37         }
  38
  39         public function execute() {
  40                 $this->run();
  41         }
  42
  43         public function executeGenerator( $resultPageSet ) {
  44                 $this->run( $resultPageSet );
  45         }
  46
  47         private $fld_ids = false, $fld_title = false, $fld_patrol = false, $fld_flags = false,
  48                         $fld_timestamp = false, $fld_user = false, $fld_comment = false, $fld_parsedcomment = false, $fld_sizes = false,
  49                         $fld_notificationtimestamp = false, $fld_userid = false, $fld_loginfo = false;
  50
  51         /**
  52          * @param $resultPageSet ApiPageSet
  53          * @return void
  54          */
  55         private function run( $resultPageSet = null ) {
  56                 $this->selectNamedDB( 'watchlist', DB_SLAVE, 'watchlist' );
  57
  58                 $params = $this->extractRequestParams();
  59
  60                 $user = $this->getWatchlistUser( $params );
  61
  62                 if ( !is_null( $params['prop'] ) && is_null( $resultPageSet ) ) {
  63                         $prop = array_flip( $params['prop'] );
  64
  65                         $this->fld_ids = isset( $prop['ids'] );
  66                         $this->fld_title = isset( $prop['title'] );
  67                         $this->fld_flags = isset( $prop['flags'] );
  68                         $this->fld_user = isset( $prop['user'] );
  69                         $this->fld_userid = isset( $prop['userid'] );
  70                         $this->fld_comment = isset( $prop['comment'] );
  71                         $this->fld_parsedcomment = isset ( $prop['parsedcomment'] );
  72                         $this->fld_timestamp = isset( $prop['timestamp'] );
  73                         $this->fld_sizes = isset( $prop['sizes'] );
  74                         $this->fld_patrol = isset( $prop['patrol'] );
  75                         $this->fld_notificationtimestamp = isset( $prop['notificationtimestamp'] );
  76                         $this->fld_loginfo = isset( $prop['loginfo'] );
  77
  78                         if ( $this->fld_patrol ) {
  79                                 if ( !$user->useRCPatrol() && !$user->useNPPatrol() ) {
  80                                         $this->dieUsage( 'patrol property is not available', 'patrol' );
  81                                 }
  82                         }
  83                 }
  84
  85                 $this->addFields( array(
  86                         'rc_namespace',
  87                         'rc_title',
  88                         'rc_timestamp',
  89                         'rc_type',
  90                 ) );
  91
  92                 if ( is_null( $resultPageSet ) ) {
  93                         $this->addFields( array(
  94                                 'rc_cur_id',
  95                                 'rc_this_oldid',
  96                                 'rc_last_oldid',
  97                         ) );
  98
  99                         $this->addFieldsIf( array( 'rc_new', 'rc_minor', 'rc_bot' ), $this->fld_flags );
 100                         $this->addFieldsIf( 'rc_user', $this->fld_user || $this->fld_userid );
 101                         $this->addFieldsIf( 'rc_user_text', $this->fld_user );
 102                         $this->addFieldsIf( 'rc_comment', $this->fld_comment || $this->fld_parsedcomment );
 103                         $this->addFieldsIf( 'rc_patrolled', $this->fld_patrol );
 104                         $this->addFieldsIf( array( 'rc_old_len', 'rc_new_len' ), $this->fld_sizes );
 105                         $this->addFieldsIf( 'wl_notificationtimestamp', $this->fld_notificationtimestamp );
 106                         $this->addFieldsIf( array( 'rc_logid', 'rc_log_type', 'rc_log_action', 'rc_params' ), $this->fld_loginfo );
 107                 } elseif ( $params['allrev'] ) {
 108                         $this->addFields( 'rc_this_oldid' );
 109                 } else {
 110                         $this->addFields( 'rc_cur_id' );
 111                 }
 112
 113                 $this->addTables( array(
 114                         'recentchanges',
 115                         'watchlist',
 116                 ) );
 117
 118                 $userId = $user->getId();
 119                 $this->addJoinConds( array( 'watchlist' => array('INNER JOIN',
 120                         array(
 121                                 'wl_user' => $userId,
 122                                 'wl_namespace=rc_namespace',
 123                                 'wl_title=rc_title'
 124                 ) ) ) );
 125
 126                 $this->addWhere( array(
 127                         'rc_deleted' => 0,
 128                 ) );
 129
 130                 $db = $this->getDB();
 131
 132                 $this->addTimestampWhereRange( 'rc_timestamp', $params['dir'],
 133                         $params['start'], $params['end'] );
 134                 $this->addWhereFld( 'wl_namespace', $params['namespace'] );
 135
 136                 if ( !$params['allrev'] ) {
 137                         $this->addTables( 'page' );
 138                         $this->addJoinConds( array( 'page' => array( 'LEFT JOIN','rc_cur_id=page_id' ) ) );
 139                         $this->addWhere( 'rc_this_oldid=page_latest OR rc_type=' . RC_LOG );
 140                 }
 141
 142                 if ( !is_null( $params['show'] ) ) {
 143                         $show = array_flip( $params['show'] );
 144
 145                         /* Check for conflicting parameters. */
 146                         if ( ( isset ( $show['minor'] ) && isset ( $show['!minor'] ) )
 147                                         || ( isset ( $show['bot'] ) && isset ( $show['!bot'] ) )
 148                                         || ( isset ( $show['anon'] ) && isset ( $show['!anon'] ) )
 149                                         || ( isset ( $show['patrolled'] ) && isset ( $show['!patrolled'] ) )
 150                         )
 151                         {
 152                                 $this->dieUsageMsg( 'show' );
 153                         }
 154
 155                         // Check permissions.
 156                         if ( isset( $show['patrolled'] ) || isset( $show['!patrolled'] ) ) {
 157                                 $user = $this->getUser();
 158                                 if ( !$user->useRCPatrol() && !$user->useNPPatrol() ) {
 159                                         $this->dieUsage( 'You need the patrol right to request the patrolled flag', 'permissiondenied' );
 160                                 }
 161                         }
 162
 163                         /* Add additional conditions to query depending upon parameters. */
 164                         $this->addWhereIf( 'rc_minor = 0', isset( $show['!minor'] ) );
 165                         $this->addWhereIf( 'rc_minor != 0', isset( $show['minor'] ) );
 166                         $this->addWhereIf( 'rc_bot = 0', isset( $show['!bot'] ) );
 167                         $this->addWhereIf( 'rc_bot != 0', isset( $show['bot'] ) );
 168                         $this->addWhereIf( 'rc_user = 0', isset( $show['anon'] ) );
 169                         $this->addWhereIf( 'rc_user != 0', isset( $show['!anon'] ) );
 170                         $this->addWhereIf( 'rc_patrolled = 0', isset( $show['!patrolled'] ) );
 171                         $this->addWhereIf( 'rc_patrolled != 0', isset( $show['patrolled'] ) );
 172                 }
 173
 174                 if ( !is_null( $params['user'] ) && !is_null( $params['excludeuser'] ) ) {
 175                         $this->dieUsage( 'user and excludeuser cannot be used together', 'user-excludeuser' );
 176                 }
 177                 if ( !is_null( $params['user'] ) ) {
 178                         $this->addWhereFld( 'rc_user_text', $params['user'] );
 179                 }
 180                 if ( !is_null( $params['excludeuser'] ) ) {
 181                         $this->addWhere( 'rc_user_text != ' . $db->addQuotes( $params['excludeuser'] ) );
 182                 }
 183
 184                 // This is an index optimization for mysql, as done in the Special:Watchlist page
 185                 $this->addWhereIf( "rc_timestamp > ''", !isset( $params['start'] ) && !isset( $params['end'] ) && $db->getType() == 'mysql' );
 186
 187                 $this->addOption( 'LIMIT', $params['limit'] + 1 );
 188
 189                 $ids = array();
 190                 $count = 0;
 191                 $res = $this->select( __METHOD__ );
 192
 193                 foreach ( $res as $row ) {
 194                         if ( ++ $count > $params['limit'] ) {
 195                                 // We've reached the one extra which shows that there are additional pages to be had. Stop here...
 196                                 $this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->rc_timestamp ) );
 197                                 break;
 198                         }
 199
 200                         if ( is_null( $resultPageSet ) ) {
 201                                 $vals = $this->extractRowInfo( $row );
 202                                 $fit = $this->getResult()->addValue( array( 'query', $this->getModuleName() ), null, $vals );
 203                                 if ( !$fit ) {
 204                                         $this->setContinueEnumParameter( 'start',
 205                                                         wfTimestamp( TS_ISO_8601, $row->rc_timestamp ) );
 206                                         break;
 207                                 }
 208                         } else {
 209                                 if ( $params['allrev'] ) {
 210                                         $ids[] = intval( $row->rc_this_oldid );
 211                                 } else {
 212                                         $ids[] = intval( $row->rc_cur_id );
 213                                 }
 214                         }
 215                 }
 216
 217                 if ( is_null( $resultPageSet ) ) {
 218                         $this->getResult()->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'item' );
 219                 } elseif ( $params['allrev'] ) {
 220                         $resultPageSet->populateFromRevisionIDs( $ids );
 221                 } else {
 222                         $resultPageSet->populateFromPageIDs( $ids );
 223                 }
 224         }
 225
 226         private function extractRowInfo( $row ) {
 227                 $vals = array();
 228
 229                 if ( $this->fld_ids ) {
 230                         $vals['pageid'] = intval( $row->rc_cur_id );
 231                         $vals['revid'] = intval( $row->rc_this_oldid );
 232                         $vals['old_revid'] = intval( $row->rc_last_oldid );
 233                 }
 234
 235                 $title = Title::makeTitle( $row->rc_namespace, $row->rc_title );
 236
 237                 if ( $this->fld_title ) {
 238                         ApiQueryBase::addTitleInfo( $vals, $title );
 239                 }
 240
 241                 if ( $this->fld_user || $this->fld_userid ) {
 242
 243                         if ( $this->fld_user ) {
 244                                 $vals['user'] = $row->rc_user_text;
 245                         }
 246
 247                         if ( $this->fld_userid ) {
 248                                 $vals['user'] = $row->rc_user;
 249                         }
 250
 251                         if ( !$row->rc_user ) {
 252                                 $vals['anon'] = '';
 253                         }
 254                 }
 255
 256                 if ( $this->fld_flags ) {
 257                         if ( $row->rc_new ) {
 258                                 $vals['new'] = '';
 259                         }
 260                         if ( $row->rc_minor ) {
 261                                 $vals['minor'] = '';
 262                         }
 263                         if ( $row->rc_bot ) {
 264                                 $vals['bot'] = '';
 265                         }
 266                 }
 267
 268                 if ( $this->fld_patrol && isset( $row->rc_patrolled ) ) {
 269                         $vals['patrolled'] = '';
 270                 }
 271
 272                 if ( $this->fld_timestamp ) {
 273                         $vals['timestamp'] = wfTimestamp( TS_ISO_8601, $row->rc_timestamp );
 274                 }
 275
 276                 if ( $this->fld_sizes ) {
 277                         $vals['oldlen'] = intval( $row->rc_old_len );
 278                         $vals['newlen'] = intval( $row->rc_new_len );
 279                 }
 280
 281                 if ( $this->fld_notificationtimestamp ) {
 282                         $vals['notificationtimestamp'] = ( $row->wl_notificationtimestamp == null )
 283                                 ? ''
 284                                 : wfTimestamp( TS_ISO_8601, $row->wl_notificationtimestamp );
 285                 }
 286
 287                 if ( $this->fld_comment && isset( $row->rc_comment ) ) {
 288                         $vals['comment'] = $row->rc_comment;
 289                 }
 290
 291                 if ( $this->fld_parsedcomment && isset( $row->rc_comment ) ) {
 292                         $vals['parsedcomment'] = Linker::formatComment( $row->rc_comment, $title );
 293                 }
 294
 295                 if ( $this->fld_loginfo && $row->rc_type == RC_LOG ) {
 296                         $vals['logid'] = intval( $row->rc_logid );
 297                         $vals['logtype'] = $row->rc_log_type;
 298                         $vals['logaction'] = $row->rc_log_action;
 299                         ApiQueryLogEvents::addLogParams(
 300                                 $this->getResult(),
 301                                 $vals,
 302                                 $row->rc_params,
 303                                 $row->rc_log_type,
 304                                 $row->rc_log_action,
 305                                 $row->rc_timestamp
 306                         );
 307                 }
 308
 309                 return $vals;
 310         }
 311
 312         public function getAllowedParams() {
 313                 return array(
 314                         'allrev' => false,
 315                         'start' => array(
 316                                 ApiBase::PARAM_TYPE => 'timestamp'
 317                         ),
 318                         'end' => array(
 319                                 ApiBase::PARAM_TYPE => 'timestamp'
 320                         ),
 321                         'namespace' => array (
 322                                 ApiBase::PARAM_ISMULTI => true,
 323                                 ApiBase::PARAM_TYPE => 'namespace'
 324                         ),
 325                         'user' => array(
 326                                 ApiBase::PARAM_TYPE => 'user',
 327                         ),
 328                         'excludeuser' => array(
 329                                 ApiBase::PARAM_TYPE => 'user',
 330                         ),
 331                         'dir' => array(
 332                                 ApiBase::PARAM_DFLT => 'older',
 333                                 ApiBase::PARAM_TYPE => array(
 334                                         'newer',
 335                                         'older'
 336                                 )
 337                         ),
 338                         'limit' => array(
 339                                 ApiBase::PARAM_DFLT => 10,
 340                                 ApiBase::PARAM_TYPE => 'limit',
 341                                 ApiBase::PARAM_MIN => 1,
 342                                 ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
 343                                 ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
 344                         ),
 345                         'prop' => array(
 346                                 ApiBase::PARAM_ISMULTI => true,
 347                                 ApiBase::PARAM_DFLT => 'ids|title|flags',
 348                                 ApiBase::PARAM_TYPE => array(
 349                                         'ids',
 350                                         'title',
 351                                         'flags',
 352                                         'user',
 353                                         'userid',
 354                                         'comment',
 355                                         'parsedcomment',
 356                                         'timestamp',
 357                                         'patrol',
 358                                         'sizes',
 359                                         'notificationtimestamp',
 360                                         'loginfo',
 361                                 )
 362                         ),
 363                         'show' => array(
 364                                 ApiBase::PARAM_ISMULTI => true,
 365                                 ApiBase::PARAM_TYPE => array(
 366                                         'minor',
 367                                         '!minor',
 368                                         'bot',
 369                                         '!bot',
 370                                         'anon',
 371                                         '!anon',
 372                                         'patrolled',
 373                                         '!patrolled',
 374                                 )
 375                         ),
 376                         'owner' => array(
 377                                 ApiBase::PARAM_TYPE => 'user'
 378                         ),
 379                         'token' => array(
 380                                 ApiBase::PARAM_TYPE => 'string'
 381                         )
 382                 );
 383         }
 384
 385         public function getParamDescription() {
 386                 $p = $this->getModulePrefix();
 387                 return array(
 388                         'allrev' => 'Include multiple revisions of the same page within given timeframe',
 389                         'start' => 'The timestamp to start enumerating from',
 390                         'end' => 'The timestamp to end enumerating',
 391                         'namespace' => 'Filter changes to only the given namespace(s)',
 392                         'user' => 'Only list changes by this user',
 393                         'excludeuser' => 'Don\'t list changes by this user',
 394                         'dir' => $this->getDirectionDescription( $p ),
 395                         'limit' => 'How many total results to return per request',
 396                         'prop' => array(
 397                                 'Which additional items to get (non-generator mode only).',
 398                                 ' ids                    - Adds revision ids and page ids',
 399                                 ' title                  - Adds title of the page',
 400                                 ' flags                  - Adds flags for the edit',
 401                                 ' user                   - Adds the user who made the edit',
 402                                 ' userid                 - Adds user id of whom made the edit',
 403                                 ' comment                - Adds comment of the edit',
 404                                 ' parsedcomment          - Adds parsed comment of the edit',
 405                                 ' timestamp              - Adds timestamp of the edit',
 406                                 ' patrol                 - Tags edits that are patrolled',
 407                                 ' sizes                  - Adds the old and new lengths of the page',
 408                                 ' notificationtimestamp  - Adds timestamp of when the user was last notified about the edit',
 409                                 ' loginfo                - Adds log information where appropriate',
 410                         ),
 411                         'show' => array(
 412                                 'Show only items that meet this criteria.',
 413                                 "For example, to see only minor edits done by logged-in users, set {$p}show=minor|!anon"
 414                         ),
 415                         'owner' => 'The name of the user whose watchlist you\'d like to access',
 416                         'token' => 'Give a security token (settable in preferences) to allow access to another user\'s watchlist'
 417                 );
 418         }
 419
 420         public function getDescription() {
 421                 return "Get all recent changes to pages in the logged in user's watchlist";
 422         }
 423
 424         public function getPossibleErrors() {
 425                 return array_merge( parent::getPossibleErrors(), array(
 426                         array( 'code' => 'bad_wlowner', 'info' => 'Specified user does not exist' ),
 427                         array( 'code' => 'bad_wltoken', 'info' => 'Incorrect watchlist token provided -- please set a correct token in Special:Preferences' ),
 428                         array( 'code' => 'notloggedin', 'info' => 'You must be logged-in to have a watchlist' ),
 429                         array( 'code' => 'patrol', 'info' => 'patrol property is not available' ),
 430                         array( 'show' ),
 431                         array( 'code' => 'permissiondenied', 'info' => 'You need the patrol right to request the patrolled flag' ),
 432                         array( 'code' => 'user-excludeuser', 'info' => 'user and excludeuser cannot be used together' ),
 433                 ) );
 434         }
 435
 436         public function getExamples() {
 437                 return array(
 438                         'api.php?action=query&list=watchlist',
 439                         'api.php?action=query&list=watchlist&wlprop=ids|title|timestamp|user|comment',
 440                         'api.php?action=query&list=watchlist&wlallrev=&wlprop=ids|title|timestamp|user|comment',
 441                         'api.php?action=query&generator=watchlist&prop=info',
 442                         'api.php?action=query&generator=watchlist&gwlallrev=&prop=revisions&rvprop=timestamp|user',
 443                         'api.php?action=query&list=watchlist&wlowner=Bob_Smith&wltoken=d8d562e9725ea1512894cdab28e5ceebc7f20237'
 444                 );
 445         }
 446
 447         public function getHelpUrls() {
 448                 return 'http://www.mediawiki.org/wiki/API:Watchlist';
 449         }
 450
 451         public function getVersion() {
 452                 return __CLASS__ . ': $Id$';
 453         }
 454 }