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+<?php
+
+/**
+ * API for MediaWiki 1.12+
+ *
+ * Created on Mar 16, 2008
+ *
+ * Copyright © 2008 Vasiliev Victor vasilvv@gmail.com,
+ * based on ApiQueryAllPages.php
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ */
+
+/**
+ * Query module to enumerate all available pages.
+ *
+ * @ingroup API
+ */
+class ApiQueryAllImages extends ApiQueryGeneratorBase {
+
+ protected $mRepo;
+
+ public function __construct( $query, $moduleName ) {
+ parent::__construct( $query, $moduleName, 'ai' );
+ $this->mRepo = RepoGroup::singleton()->getLocalRepo();
+ }
+
+ /**
+ * Override parent method to make sure to make sure the repo's DB is used
+ * which may not necesarilly be the same as the local DB.
+ *
+ * TODO: allow querying non-local repos.
+ * @return DatabaseBase
+ */
+ protected function getDB() {
+ return $this->mRepo->getSlaveDB();
+ }
+
+ public function execute() {
+ $this->run();
+ }
+
+ public function getCacheMode( $params ) {
+ return 'public';
+ }
+
+ /**
+ * @param $resultPageSet ApiPageSet
+ * @return void
+ */
+ public function executeGenerator( $resultPageSet ) {
+ if ( $resultPageSet->isResolvingRedirects() ) {
+ $this->dieUsage( 'Use "gaifilterredir=nonredirects" option instead of "redirects" when using allimages as a generator', 'params' );
+ }
+
+ $this->run( $resultPageSet );
+ }
+
+ /**
+ * @param $resultPageSet ApiPageSet
+ * @return void
+ */
+ private function run( $resultPageSet = null ) {
+ $repo = $this->mRepo;
+ if ( !$repo instanceof LocalRepo ) {
+ $this->dieUsage( 'Local file repository does not support querying all images', 'unsupportedrepo' );
+ }
+
+ $prefix = $this->getModulePrefix();
+
+ $db = $this->getDB();
+
+ $params = $this->extractRequestParams();
+
+ // Table and return fields
+ $this->addTables( 'image' );
+
+ $prop = array_flip( $params['prop'] );
+ $this->addFields( LocalFile::selectFields() );
+
+ $dir = ( in_array( $params['dir'], array( 'descending', 'older' ) ) ? 'older' : 'newer' );
+
+ if ( $params['sort'] == 'name' ) {
+ // Check mutually exclusive params
+ $disallowed = array( 'start', 'end', 'user' );
+ foreach ( $disallowed as $pname ) {
+ if ( isset( $params[$pname] ) ) {
+ $this->dieUsage( "Parameter '{$prefix}{$pname}' can only be used with {$prefix}sort=timestamp", 'badparams' );
+ }
+ }
+ if ( $params['filterbots'] != 'all' ) {
+ $this->dieUsage( "Parameter '{$prefix}filterbots' can only be used with {$prefix}sort=timestamp", 'badparams' );
+ }
+
+ // Pagination
+ if ( !is_null( $params['continue'] ) ) {
+ $cont = explode( '|', $params['continue'] );
+ if ( count( $cont ) != 1 ) {
+ $this->dieUsage( 'Invalid continue param. You should pass the ' .
+ 'original value returned by the previous query', '_badcontinue' );
+ }
+ $op = ( $dir == 'older' ? '<' : '>' );
+ $cont_from = $db->addQuotes( $cont[0] );
+ $this->addWhere( "img_name $op= $cont_from" );
+ }
+
+ // Image filters
+ $from = ( is_null( $params['from'] ) ? null : $this->titlePartToKey( $params['from'] ) );
+ $to = ( is_null( $params['to'] ) ? null : $this->titlePartToKey( $params['to'] ) );
+ $this->addWhereRange( 'img_name', $dir, $from, $to );
+
+ if ( isset( $params['prefix'] ) ) {
+ $this->addWhere( 'img_name' . $db->buildLike( $this->titlePartToKey( $params['prefix'] ), $db->anyString() ) );
+ }
+ } else {
+ // Check mutually exclusive params
+ $disallowed = array( 'from', 'to', 'prefix' );
+ foreach ( $disallowed as $pname ) {
+ if ( isset( $params[$pname] ) ) {
+ $this->dieUsage( "Parameter '{$prefix}{$pname}' can only be used with {$prefix}sort=name", 'badparams' );
+ }
+ }
+ if (!is_null( $params['user'] ) && $params['filterbots'] != 'all') {
+ // Since filterbots checks if each user has the bot right, it doesn't make sense to use it with user
+ $this->dieUsage( "Parameters 'user' and 'filterbots' cannot be used together", 'badparams' );
+ }
+
+ // Pagination
+ $this->addTimestampWhereRange( 'img_timestamp', $dir, $params['start'], $params['end'] );
+
+ // Image filters
+ if ( !is_null( $params['user'] ) ) {
+ $this->addWhereFld( 'img_user_text', $params['user'] );
+ }
+ if ( $params['filterbots'] != 'all' ) {
+ $this->addTables( 'user_groups' );
+ $groupCond = ( $params['filterbots'] == 'nobots' ? 'NULL': 'NOT NULL' );
+ $this->addWhere( "ug_group IS $groupCond" );
+ $this->addJoinConds( array( 'user_groups' => array(
+ 'LEFT JOIN',
+ array(
+ 'ug_group' => User::getGroupsWithPermission( 'bot' ),
+ 'ug_user = img_user'
+ )
+ ) ) );
+ }
+ }
+
+ // Filters not depending on sort
+ if ( isset( $params['minsize'] ) ) {
+ $this->addWhere( 'img_size>=' . intval( $params['minsize'] ) );
+ }
+
+ if ( isset( $params['maxsize'] ) ) {
+ $this->addWhere( 'img_size<=' . intval( $params['maxsize'] ) );
+ }
+
+ $sha1 = false;
+ if ( isset( $params['sha1'] ) ) {
+ if ( !$this->validateSha1Hash( $params['sha1'] ) ) {
+ $this->dieUsage( 'The SHA1 hash provided is not valid', 'invalidsha1hash' );
+ }
+ $sha1 = wfBaseConvert( $params['sha1'], 16, 36, 31 );
+ } elseif ( isset( $params['sha1base36'] ) ) {
+ $sha1 = $params['sha1base36'];
+ if ( !$this->validateSha1Base36Hash( $sha1 ) ) {
+ $this->dieUsage( 'The SHA1Base36 hash provided is not valid', 'invalidsha1base36hash' );
+ }
+ }
+ if ( $sha1 ) {
+ $this->addWhereFld( 'img_sha1', $sha1 );
+ }
+
+ if ( !is_null( $params['mime'] ) ) {
+ global $wgMiserMode;
+ if ( $wgMiserMode ) {
+ $this->dieUsage( 'MIME search disabled in Miser Mode', 'mimesearchdisabled' );
+ }
+
+ list( $major, $minor ) = File::splitMime( $params['mime'] );
+
+ $this->addWhereFld( 'img_major_mime', $major );
+ $this->addWhereFld( 'img_minor_mime', $minor );
+ }
+
+ $limit = $params['limit'];
+ $this->addOption( 'LIMIT', $limit + 1 );
+ $sort = ( $dir == 'older' ? ' DESC' : '' );
+ if ( $params['sort'] == 'timestamp' ) {
+ $this->addOption( 'ORDER BY', 'img_timestamp' . $sort );
+ if ( $params['filterbots'] == 'all' ) {
+ $this->addOption( 'USE INDEX', array( 'image' => 'img_timestamp' ) );
+ } else {
+ $this->addOption( 'USE INDEX', array( 'image' => 'img_usertext_timestamp' ) );
+ }
+ } else {
+ $this->addOption( 'ORDER BY', 'img_name' . $sort );
+ }
+
+ $res = $this->select( __METHOD__ );
+
+ $titles = array();
+ $count = 0;
+ $result = $this->getResult();
+ foreach ( $res as $row ) {
+ if ( ++ $count > $limit ) {
+ // We've reached the one extra which shows that there are additional pages to be had. Stop here...
+ if ( $params['sort'] == 'name' ) {
+ $this->setContinueEnumParameter( 'continue', $row->img_name );
+ } else {
+ $this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->img_timestamp ) );
+ }
+ break;
+ }
+
+ if ( is_null( $resultPageSet ) ) {
+ $file = $repo->newFileFromRow( $row );
+ $info = array_merge( array( 'name' => $row->img_name ),
+ ApiQueryImageInfo::getInfo( $file, $prop, $result ) );
+ self::addTitleInfo( $info, $file->getTitle() );
+
+ $fit = $result->addValue( array( 'query', $this->getModuleName() ), null, $info );
+ if ( !$fit ) {
+ if ( $params['sort'] == 'name' ) {
+ $this->setContinueEnumParameter( 'continue', $row->img_name );
+ } else {
+ $this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->img_timestamp ) );
+ }
+ break;
+ }
+ } else {
+ $titles[] = Title::makeTitle( NS_FILE, $row->img_name );
+ }
+ }
+
+ if ( is_null( $resultPageSet ) ) {
+ $result->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'img' );
+ } else {
+ $resultPageSet->populateFromTitles( $titles );
+ }
+ }
+
+ public function getAllowedParams() {
+ return array (
+ 'sort' => array(
+ ApiBase::PARAM_DFLT => 'name',
+ ApiBase::PARAM_TYPE => array(
+ 'name',
+ 'timestamp'
+ )
+ ),
+ 'dir' => array(
+ ApiBase::PARAM_DFLT => 'ascending',
+ ApiBase::PARAM_TYPE => array(
+ // sort=name
+ 'ascending',
+ 'descending',
+ // sort=timestamp
+ 'newer',
+ 'older',
+ )
+ ),
+ 'from' => null,
+ 'to' => null,
+ 'continue' => null,
+ 'start' => array(
+ ApiBase::PARAM_TYPE => 'timestamp'
+ ),
+ 'end' => array(
+ ApiBase::PARAM_TYPE => 'timestamp'
+ ),
+ 'prop' => array(
+ ApiBase::PARAM_TYPE => ApiQueryImageInfo::getPropertyNames( $this->propertyFilter ),
+ ApiBase::PARAM_DFLT => 'timestamp|url',
+ ApiBase::PARAM_ISMULTI => true
+ ),
+ 'prefix' => null,
+ 'minsize' => array(
+ ApiBase::PARAM_TYPE => 'integer',
+ ),
+ 'maxsize' => array(
+ ApiBase::PARAM_TYPE => 'integer',
+ ),
+ 'sha1' => null,
+ 'sha1base36' => null,
+ 'user' => array(
+ ApiBase::PARAM_TYPE => 'user'
+ ),
+ 'filterbots' => array(
+ ApiBase::PARAM_DFLT => 'all',
+ ApiBase::PARAM_TYPE => array(
+ 'all',
+ 'bots',
+ 'nobots'
+ )
+ ),
+ 'mime' => null,
+ 'limit' => array(
+ ApiBase::PARAM_DFLT => 10,
+ ApiBase::PARAM_TYPE => 'limit',
+ ApiBase::PARAM_MIN => 1,
+ ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
+ ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
+ ),
+ );
+ }
+
+ public function getParamDescription() {
+ $p = $this->getModulePrefix();
+ return array(
+ 'sort' => 'Property to sort by',
+ 'dir' => 'The direction in which to list',
+ 'from' => "The image title to start enumerating from. Can only be used with {$p}sort=name",
+ 'to' => "The image title to stop enumerating at. Can only be used with {$p}sort=name",
+ 'continue' => 'When more results are available, use this to continue',
+ 'start' => "The timestamp to start enumerating from. Can only be used with {$p}sort=timestamp",
+ 'end' => "The timestamp to end enumerating. Can only be used with {$p}sort=timestamp",
+ 'prop' => ApiQueryImageInfo::getPropertyDescriptions( $this->propertyFilter ),
+ 'prefix' => "Search for all image titles that begin with this value. Can only be used with {$p}sort=name",
+ 'minsize' => 'Limit to images with at least this many bytes',
+ 'maxsize' => 'Limit to images with at most this many bytes',
+ 'sha1' => "SHA1 hash of image. Overrides {$p}sha1base36",
+ 'sha1base36' => 'SHA1 hash of image in base 36 (used in MediaWiki)',
+ 'user' => "Only return files uploaded by this user. Can only be used with {$p}sort=timestamp. Cannot be used together with {$p}filterbots",
+ 'filterbots' => "How to filter files uploaded by bots. Can only be used with {$p}sort=timestamp. Cannot be used together with {$p}user",
+ 'mime' => 'What MIME type to search for. e.g. image/jpeg. Disabled in Miser Mode',
+ 'limit' => 'How many images in total to return',
+ );
+ }
+
+ private $propertyFilter = array( 'archivename', 'thumbmime' );
+
+ public function getResultProperties() {
+ return array_merge(
+ array(
+ '' => array(
+ 'name' => 'string',
+ 'ns' => 'namespace',
+ 'title' => 'string'
+ )
+ ),
+ ApiQueryImageInfo::getResultPropertiesFiltered( $this->propertyFilter )
+ );
+ }
+
+ public function getDescription() {
+ return 'Enumerate all images sequentially';
+ }
+
+ public function getPossibleErrors() {
+ $p = $this->getModulePrefix();
+ return array_merge( parent::getPossibleErrors(), array(
+ array( 'code' => 'params', 'info' => 'Use "gaifilterredir=nonredirects" option instead of "redirects" when using allimages as a generator' ),
+ array( 'code' => 'badparams', 'info' => "Parameter'{$p}start' can only be used with {$p}sort=timestamp" ),
+ array( 'code' => 'badparams', 'info' => "Parameter'{$p}end' can only be used with {$p}sort=timestamp" ),
+ array( 'code' => 'badparams', 'info' => "Parameter'{$p}user' can only be used with {$p}sort=timestamp" ),
+ array( 'code' => 'badparams', 'info' => "Parameter'{$p}filterbots' can only be used with {$p}sort=timestamp" ),
+ array( 'code' => 'badparams', 'info' => "Parameter'{$p}from' can only be used with {$p}sort=name" ),
+ array( 'code' => 'badparams', 'info' => "Parameter'{$p}to' can only be used with {$p}sort=name" ),
+ array( 'code' => 'badparams', 'info' => "Parameter'{$p}prefix' can only be used with {$p}sort=name" ),
+ array( 'code' => 'badparams', 'info' => "Parameters 'user' and 'filterbots' cannot be used together" ),
+ array( 'code' => 'unsupportedrepo', 'info' => 'Local file repository does not support querying all images' ),
+ array( 'code' => 'mimesearchdisabled', 'info' => 'MIME search disabled in Miser Mode' ),
+ array( 'code' => 'invalidsha1hash', 'info' => 'The SHA1 hash provided is not valid' ),
+ array( 'code' => 'invalidsha1base36hash', 'info' => 'The SHA1Base36 hash provided is not valid' ),
+ array( 'code' => '_badcontinue', 'info' => 'Invalid continue param. You should pass the original value returned by the previous query' ),
+ ) );
+ }
+
+ public function getExamples() {
+ return array(
+ 'api.php?action=query&list=allimages&aifrom=B' => array(
+ 'Simple Use',
+ 'Show a list of files starting at the letter "B"',
+ ),
+ 'api.php?action=query&list=allimages&aiprop=user|timestamp|url&aisort=timestamp&aidir=older' => array(
+ 'Simple Use',
+ 'Show a list of recently uploaded files similar to Special:NewFiles',
+ ),
+ 'api.php?action=query&generator=allimages&gailimit=4&gaifrom=T&prop=imageinfo' => array(
+ 'Using as Generator',
+ 'Show info about 4 files starting at the letter "T"',
+ ),
+ );
+ }
+
+ public function getHelpUrls() {
+ return 'https://www.mediawiki.org/wiki/API:Allimages';
+ }
+
+ public function getVersion() {
+ return __CLASS__ . ': $Id$';
+ }
+}