includes/api/ApiQueryWatchlist.php

   1 <?php
   2
   3 /*
   4  * Created on Sep 25, 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 allows clients to retrieve a list of recently modified pages
  33  * that are part of the logged-in user's watchlist.
  34  *
  35  * @ingroup API
  36  */
  37 class ApiQueryWatchlist extends ApiQueryGeneratorBase {
  38
  39         public function __construct( $query, $moduleName ) {
  40                 parent :: __construct( $query, $moduleName, 'wl' );
  41         }
  42
  43         public function execute() {
  44                 $this->run();
  45         }
  46
  47         public function executeGenerator( $resultPageSet ) {
  48                 $this->run( $resultPageSet );
  49         }
  50
  51         private $fld_ids = false, $fld_title = false, $fld_patrol = false, $fld_flags = false,
  52                         $fld_timestamp = false, $fld_user = false, $fld_comment = false, $fld_sizes = false;
  53
  54         private function run( $resultPageSet = null ) {
  55                 global $wgUser, $wgDBtype;
  56
  57                 $this->selectNamedDB( 'watchlist', DB_SLAVE, 'watchlist' );
  58
  59                 $params = $this->extractRequestParams();
  60
  61                 if ( !is_null( $params['owner'] ) && !is_null( $params['token'] ) ) {
  62                         $user = User::newFromName( $params['owner'], false );
  63                         if ( !$user->getId() ) {
  64                                 $this->dieUsage( 'Specified user does not exist', 'bad_wlowner' );
  65                         }
  66                         $token = $user->getOption( 'watchlisttoken' );
  67                         if ( $token == '' || $token != $params['token'] ) {
  68                                 $this->dieUsage( 'Incorrect watchlist token provided -- please set a correct token in Special:Preferences', 'bad_wltoken' );
  69                         }
  70                 } elseif ( !$wgUser->isLoggedIn() ) {
  71                         $this->dieUsage( 'You must be logged-in to have a watchlist', 'notloggedin' );
  72                 } else {
  73                         $user = $wgUser;
  74                 }
  75
  76                 if ( !is_null( $params['prop'] ) && is_null( $resultPageSet ) ) {
  77
  78                         $prop = array_flip( $params['prop'] );
  79
  80                         $this->fld_ids = isset( $prop['ids'] );
  81                         $this->fld_title = isset( $prop['title'] );
  82                         $this->fld_flags = isset( $prop['flags'] );
  83                         $this->fld_user = isset( $prop['user'] );
  84                         $this->fld_comment = isset( $prop['comment'] );
  85                         $this->fld_timestamp = isset( $prop['timestamp'] );
  86                         $this->fld_sizes = isset( $prop['sizes'] );
  87                         $this->fld_patrol = isset( $prop['patrol'] );
  88
  89                         if ( $this->fld_patrol ) {
  90                                 if ( !$user->useRCPatrol() && !$user->useNPPatrol() )
  91                                         $this->dieUsage( 'patrol property is not available', 'patrol' );
  92                         }
  93                 }
  94
  95                 if ( is_null( $resultPageSet ) ) {
  96                         $this->addFields( array (
  97                                 'rc_cur_id',
  98                                 'rc_this_oldid',
  99                                 'rc_namespace',
 100                                 'rc_title',
 101                                 'rc_timestamp'
 102                         ) );
 103
 104                         $this->addFieldsIf( 'rc_new', $this->fld_flags );
 105                         $this->addFieldsIf( 'rc_minor', $this->fld_flags );
 106                         $this->addFieldsIf( 'rc_bot', $this->fld_flags );
 107                         $this->addFieldsIf( 'rc_user', $this->fld_user );
 108                         $this->addFieldsIf( 'rc_user_text', $this->fld_user );
 109                         $this->addFieldsIf( 'rc_comment', $this->fld_comment );
 110                         $this->addFieldsIf( 'rc_patrolled', $this->fld_patrol );
 111                         $this->addFieldsIf( 'rc_old_len', $this->fld_sizes );
 112                         $this->addFieldsIf( 'rc_new_len', $this->fld_sizes );
 113                 }
 114                 elseif ( $params['allrev'] ) {
 115                         $this->addFields( array (
 116                                 'rc_this_oldid',
 117                                 'rc_namespace',
 118                                 'rc_title',
 119                                 'rc_timestamp'
 120                         ) );
 121                 } else {
 122                         $this->addFields( array (
 123                                 'rc_cur_id',
 124                                 'rc_namespace',
 125                                 'rc_title',
 126                                 'rc_timestamp'
 127                         ) );
 128                 }
 129
 130                 $this->addTables( array (
 131                         'watchlist',
 132                         'page',
 133                         'recentchanges'
 134                 ) );
 135
 136                 $userId = $user->getId();
 137                 $this->addWhere( array (
 138                         'wl_namespace = rc_namespace',
 139                         'wl_title = rc_title',
 140                         'rc_cur_id = page_id',
 141                         'wl_user' => $userId,
 142                         'rc_deleted' => 0,
 143                 ) );
 144
 145                 $this->addWhereRange( 'rc_timestamp', $params['dir'], $params['start'], $params['end'] );
 146                 $this->addWhereFld( 'wl_namespace', $params['namespace'] );
 147                 $this->addWhereIf( 'rc_this_oldid=page_latest', !$params['allrev'] );
 148
 149                 if ( !is_null( $params['show'] ) ) {
 150                         $show = array_flip( $params['show'] );
 151
 152                         /* Check for conflicting parameters. */
 153                         if ( ( isset ( $show['minor'] ) && isset ( $show['!minor'] ) )
 154                                         || ( isset ( $show['bot'] ) && isset ( $show['!bot'] ) )
 155                                         || ( isset ( $show['anon'] ) && isset ( $show['!anon'] ) )
 156                                         || ( isset ( $show['patrolled'] ) && isset ( $show['!patrolled'] ) ) ) {
 157
 158                                 $this->dieUsage( "Incorrect parameter - mutually exclusive values may not be supplied", 'show' );
 159                         }
 160
 161                         // Check permissions.  FIXME: should this check $user instead of
 162                         // $wgUser?
 163                         global $wgUser;
 164                         if ( ( isset( $show['patrolled'] ) || isset( $show['!patrolled'] ) ) && !$wgUser->useRCPatrol() && !$wgUser->useNPPatrol() )
 165                                 $this->dieUsage( "You need the patrol right to request the patrolled flag", 'permissiondenied' );
 166
 167                         /* Add additional conditions to query depending upon parameters. */
 168                         $this->addWhereIf( 'rc_minor = 0', isset ( $show['!minor'] ) );
 169                         $this->addWhereIf( 'rc_minor != 0', isset ( $show['minor'] ) );
 170                         $this->addWhereIf( 'rc_bot = 0', isset ( $show['!bot'] ) );
 171                         $this->addWhereIf( 'rc_bot != 0', isset ( $show['bot'] ) );
 172                         $this->addWhereIf( 'rc_user = 0', isset ( $show['anon'] ) );
 173                         $this->addWhereIf( 'rc_user != 0', isset ( $show['!anon'] ) );
 174                         $this->addWhereIf( 'rc_patrolled = 0', isset( $show['!patrolled'] ) );
 175                         $this->addWhereIf( 'rc_patrolled != 0', isset( $show['patrolled'] ) );
 176                 }
 177
 178                 if ( !is_null( $params['user'] ) && !is_null( $params['excludeuser'] ) )
 179                         $this->dieUsage( 'user and excludeuser cannot be used together', 'user-excludeuser' );
 180                 if ( !is_null( $params['user'] ) )
 181                         $this->addWhereFld( 'rc_user_text', $params['user'] );
 182                 if ( !is_null( $params['excludeuser'] ) )
 183                         $this->addWhere( 'rc_user_text != ' . $this->getDB()->addQuotes( $params['excludeuser'] ) );
 184
 185
 186                 # This is an index optimization for mysql, as done in the Special:Watchlist page
 187                 $this->addWhereIf( "rc_timestamp > ''", !isset ( $params['start'] ) && !isset ( $params['end'] ) && $wgDBtype == 'mysql' );
 188
 189                 $this->addOption( 'LIMIT', $params['limit'] + 1 );
 190
 191                 $ids = array ();
 192                 $count = 0;
 193                 $res = $this->select( __METHOD__ );
 194
 195                 $db = $this->getDB();
 196                 while ( $row = $db->fetchObject( $res ) ) {
 197                         if ( ++ $count > $params['limit'] ) {
 198                                 // We've reached the one extra which shows that there are additional pages to be had. Stop here...
 199                                 $this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->rc_timestamp ) );
 200                                 break;
 201                         }
 202
 203                         if ( is_null( $resultPageSet ) ) {
 204                                 $vals = $this->extractRowInfo( $row );
 205                                 $fit = $this->getResult()->addValue( array( 'query', $this->getModuleName() ), null, $vals );
 206                                 if ( !$fit )
 207                                 {
 208                                         $this->setContinueEnumParameter( 'start',
 209                                                         wfTimestamp( TS_ISO_8601, $row->rc_timestamp ) );
 210                                         break;
 211                                 }
 212                         } else {
 213                                 if ( $params['allrev'] ) {
 214                                         $ids[] = intval( $row->rc_this_oldid );
 215                                 } else {
 216                                         $ids[] = intval( $row->rc_cur_id );
 217                                 }
 218                         }
 219                 }
 220
 221                 $db->freeResult( $res );
 222
 223                 if ( is_null( $resultPageSet ) ) {
 224                         $this->getResult()->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'item' );
 225                 }
 226                 elseif ( $params['allrev'] ) {
 227                         $resultPageSet->populateFromRevisionIDs( $ids );
 228                 } else {
 229                         $resultPageSet->populateFromPageIDs( $ids );
 230                 }
 231         }
 232
 233         private function extractRowInfo( $row ) {
 234
 235                 $vals = array ();
 236
 237                 if ( $this->fld_ids ) {
 238                         $vals['pageid'] = intval( $row->rc_cur_id );
 239                         $vals['revid'] = intval( $row->rc_this_oldid );
 240                 }
 241
 242                 if ( $this->fld_title )
 243                         ApiQueryBase :: addTitleInfo( $vals, Title :: makeTitle( $row->rc_namespace, $row->rc_title ) );
 244
 245                 if ( $this->fld_user ) {
 246                         $vals['user'] = $row->rc_user_text;
 247                         if ( !$row->rc_user )
 248                                 $vals['anon'] = '';
 249                 }
 250
 251                 if ( $this->fld_flags ) {
 252                         if ( $row->rc_new )
 253                                 $vals['new'] = '';
 254                         if ( $row->rc_minor )
 255                                 $vals['minor'] = '';
 256                         if ( $row->rc_bot )
 257                                 $vals['bot'] = '';
 258                 }
 259
 260                 if ( $this->fld_patrol && isset( $row->rc_patrolled ) )
 261                         $vals['patrolled'] = '';
 262
 263                 if ( $this->fld_timestamp )
 264                         $vals['timestamp'] = wfTimestamp( TS_ISO_8601, $row->rc_timestamp );
 265
 266                 if ( $this->fld_sizes ) {
 267                         $vals['oldlen'] = intval( $row->rc_old_len );
 268                         $vals['newlen'] = intval( $row->rc_new_len );
 269                 }
 270
 271                 if ( $this->fld_comment && isset( $row->rc_comment ) )
 272                         $vals['comment'] = $row->rc_comment;
 273
 274                 return $vals;
 275         }
 276
 277         public function getAllowedParams() {
 278                 return array (
 279                         'allrev' => false,
 280                         'start' => array (
 281                                 ApiBase :: PARAM_TYPE => 'timestamp'
 282                         ),
 283                         'end' => array (
 284                                 ApiBase :: PARAM_TYPE => 'timestamp'
 285                         ),
 286                         'namespace' => array (
 287                                 ApiBase :: PARAM_ISMULTI => true,
 288                                 ApiBase :: PARAM_TYPE => 'namespace'
 289                         ),
 290                         'user' => array(
 291                                 ApiBase :: PARAM_TYPE => 'user',
 292                         ),
 293                         'excludeuser' => array(
 294                                 ApiBase :: PARAM_TYPE => 'user',
 295                         ),
 296                         'dir' => array (
 297                                 ApiBase :: PARAM_DFLT => 'older',
 298                                 ApiBase :: PARAM_TYPE => array (
 299                                         'newer',
 300                                         'older'
 301                                 )
 302                         ),
 303                         'limit' => array (
 304                                 ApiBase :: PARAM_DFLT => 10,
 305                                 ApiBase :: PARAM_TYPE => 'limit',
 306                                 ApiBase :: PARAM_MIN => 1,
 307                                 ApiBase :: PARAM_MAX => ApiBase :: LIMIT_BIG1,
 308                                 ApiBase :: PARAM_MAX2 => ApiBase :: LIMIT_BIG2
 309                         ),
 310                         'prop' => array (
 311                                 APIBase :: PARAM_ISMULTI => true,
 312                                 APIBase :: PARAM_DFLT => 'ids|title|flags',
 313                                 APIBase :: PARAM_TYPE => array (
 314                                         'ids',
 315                                         'title',
 316                                         'flags',
 317                                         'user',
 318                                         'comment',
 319                                         'timestamp',
 320                                         'patrol',
 321                                         'sizes',
 322                                 )
 323                         ),
 324                         'show' => array (
 325                                 ApiBase :: PARAM_ISMULTI => true,
 326                                 ApiBase :: PARAM_TYPE => array (
 327                                         'minor',
 328                                         '!minor',
 329                                         'bot',
 330                                         '!bot',
 331                                         'anon',
 332                                         '!anon',
 333                                         'patrolled',
 334                                         '!patrolled',
 335                                 )
 336                         ),
 337                         'owner' => array (
 338                                 ApiBase :: PARAM_TYPE => 'user'
 339                         ),
 340                         'token' => array (
 341                                 ApiBase :: PARAM_TYPE => 'string'
 342                         )
 343                 );
 344         }
 345
 346         public function getParamDescription() {
 347                 return array (
 348                         'allrev' => 'Include multiple revisions of the same page within given timeframe.',
 349                         'start' => 'The timestamp to start enumerating from.',
 350                         'end' => 'The timestamp to end enumerating.',
 351                         'namespace' => 'Filter changes to only the given namespace(s).',
 352                         'user' => 'Only list changes by this user',
 353                         'excludeuser' => 'Don\'t list changes by this user',
 354                         'dir' => 'In which direction to enumerate pages.',
 355                         'limit' => 'How many total results to return per request.',
 356                         'prop' => 'Which additional items to get (non-generator mode only).',
 357                         'show' => array (
 358                                 'Show only items that meet this criteria.',
 359                                 'For example, to see only minor edits done by logged-in users, set show=minor|!anon'
 360                         ),
 361                         'owner' => "The name of the user whose watchlist you'd like to access",
 362                         'token' => "Give a security token (settable in preferences) to allow access to another user's watchlist"
 363                 );
 364         }
 365
 366         public function getDescription() {
 367                 return "Get all recent changes to pages in the logged in user's watchlist";
 368         }
 369
 370         protected function getExamples() {
 371                 return array (
 372                         'api.php?action=query&list=watchlist',
 373                         'api.php?action=query&list=watchlist&wlprop=ids|title|timestamp|user|comment',
 374                         'api.php?action=query&list=watchlist&wlallrev&wlprop=ids|title|timestamp|user|comment',
 375                         'api.php?action=query&generator=watchlist&prop=info',
 376                         'api.php?action=query&generator=watchlist&gwlallrev&prop=revisions&rvprop=timestamp|user',
 377                         'api.php?action=query&list=watchlist&wlowner=Bob_Smith&wltoken=d8d562e9725ea1512894cdab28e5ceebc7f20237'
 378                 );
 379         }
 380
 381         public function getVersion() {
 382                 return __CLASS__ . ': $Id$';
 383         }
 384 }