--- /dev/null
+<?php
+/**
+ * Created on Oct 3, 2014
+ *
+ * Copyright © 2014 Wikimedia Foundation and contributors
+ *
+ * Heavily based on ApiQueryDeletedrevs,
+ * Copyright © 2007 Roan Kattouw "<Firstname>.<Lastname>@gmail.com"
+ *
+ * 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 deleted revisions.
+ *
+ * @ingroup API
+ */
+class ApiQueryAllDeletedRevisions extends ApiQueryRevisionsBase {
+
+ public function __construct( ApiQuery $query, $moduleName ) {
+ parent::__construct( $query, $moduleName, 'adr' );
+ }
+
+ /**
+ * @param ApiPageSet $resultPageSet
+ * @return void
+ */
+ protected function run( ApiPageSet $resultPageSet = null ) {
+ // Before doing anything at all, let's check permissions
+ $this->checkUserRightsAny( 'deletedhistory' );
+
+ $user = $this->getUser();
+ $db = $this->getDB();
+ $params = $this->extractRequestParams( false );
+
+ $result = $this->getResult();
+
+ // If the user wants no namespaces, they get no pages.
+ if ( $params['namespace'] === [] ) {
+ if ( $resultPageSet === null ) {
+ $result->addValue( 'query', $this->getModuleName(), [] );
+ }
+ return;
+ }
+
+ // This module operates in two modes:
+ // 'user': List deleted revs by a certain user
+ // 'all': List all deleted revs in NS
+ $mode = 'all';
+ if ( !is_null( $params['user'] ) ) {
+ $mode = 'user';
+ }
+
+ if ( $mode == 'user' ) {
+ foreach ( [ 'from', 'to', 'prefix', 'excludeuser' ] as $param ) {
+ if ( !is_null( $params[$param] ) ) {
+ $p = $this->getModulePrefix();
+ $this->dieWithError(
+ [ 'apierror-invalidparammix-cannotusewith', $p.$param, "{$p}user" ],
+ 'invalidparammix'
+ );
+ }
+ }
+ } else {
+ foreach ( [ 'start', 'end' ] as $param ) {
+ if ( !is_null( $params[$param] ) ) {
+ $p = $this->getModulePrefix();
+ $this->dieWithError(
+ [ 'apierror-invalidparammix-mustusewith', $p.$param, "{$p}user" ],
+ 'invalidparammix'
+ );
+ }
+ }
+ }
+
+ // If we're generating titles only, we can use DISTINCT for a better
+ // query. But we can't do that in 'user' mode (wrong index), and we can
+ // only do it when sorting ASC (because MySQL apparently can't use an
+ // index backwards for grouping even though it can for ORDER BY, WTF?)
+ $dir = $params['dir'];
+ $optimizeGenerateTitles = false;
+ if ( $mode === 'all' && $params['generatetitles'] && $resultPageSet !== null ) {
+ if ( $dir === 'newer' ) {
+ $optimizeGenerateTitles = true;
+ } else {
+ $p = $this->getModulePrefix();
+ $this->addWarning( [ 'apiwarn-alldeletedrevisions-performance', $p ], 'performance' );
+ }
+ }
+
+ $this->addTables( 'archive' );
+ if ( $resultPageSet === null ) {
+ $this->parseParameters( $params );
+ $this->addFields( Revision::selectArchiveFields() );
+ $this->addFields( [ 'ar_title', 'ar_namespace' ] );
+ } else {
+ $this->limit = $this->getParameter( 'limit' ) ?: 10;
+ $this->addFields( [ 'ar_title', 'ar_namespace' ] );
+ if ( $optimizeGenerateTitles ) {
+ $this->addOption( 'DISTINCT' );
+ } else {
+ $this->addFields( [ 'ar_timestamp', 'ar_rev_id', 'ar_id' ] );
+ }
+ }
+
+ if ( $this->fld_tags ) {
+ $this->addTables( 'tag_summary' );
+ $this->addJoinConds(
+ [ 'tag_summary' => [ 'LEFT JOIN', [ 'ar_rev_id=ts_rev_id' ] ] ]
+ );
+ $this->addFields( 'ts_tags' );
+ }
+
+ if ( !is_null( $params['tag'] ) ) {
+ $this->addTables( 'change_tag' );
+ $this->addJoinConds(
+ [ 'change_tag' => [ 'INNER JOIN', [ 'ar_rev_id=ct_rev_id' ] ] ]
+ );
+ $this->addWhereFld( 'ct_tag', $params['tag'] );
+ }
+
+ if ( $this->fetchContent ) {
+ // Modern MediaWiki has the content for deleted revs in the 'text'
+ // table using fields old_text and old_flags. But revisions deleted
+ // pre-1.5 store the content in the 'archive' table directly using
+ // fields ar_text and ar_flags, and no corresponding 'text' row. So
+ // we have to LEFT JOIN and fetch all four fields.
+ $this->addTables( 'text' );
+ $this->addJoinConds(
+ [ 'text' => [ 'LEFT JOIN', [ 'ar_text_id=old_id' ] ] ]
+ );
+ $this->addFields( [ 'ar_text', 'ar_flags', 'old_text', 'old_flags' ] );
+
+ // This also means stricter restrictions
+ $this->checkUserRightsAny( [ 'deletedtext', 'undelete' ] );
+ }
+
+ $miser_ns = null;
+
+ if ( $mode == 'all' ) {
+ if ( $params['namespace'] !== null ) {
+ $namespaces = $params['namespace'];
+ } else {
+ $namespaces = MWNamespace::getValidNamespaces();
+ }
+ $this->addWhereFld( 'ar_namespace', $namespaces );
+
+ // For from/to/prefix, we have to consider the potential
+ // transformations of the title in all specified namespaces.
+ // Generally there will be only one transformation, but wikis with
+ // some namespaces case-sensitive could have two.
+ if ( $params['from'] !== null || $params['to'] !== null ) {
+ $isDirNewer = ( $dir === 'newer' );
+ $after = ( $isDirNewer ? '>=' : '<=' );
+ $before = ( $isDirNewer ? '<=' : '>=' );
+ $where = [];
+ foreach ( $namespaces as $ns ) {
+ $w = [];
+ if ( $params['from'] !== null ) {
+ $w[] = 'ar_title' . $after .
+ $db->addQuotes( $this->titlePartToKey( $params['from'], $ns ) );
+ }
+ if ( $params['to'] !== null ) {
+ $w[] = 'ar_title' . $before .
+ $db->addQuotes( $this->titlePartToKey( $params['to'], $ns ) );
+ }
+ $w = $db->makeList( $w, LIST_AND );
+ $where[$w][] = $ns;
+ }
+ if ( count( $where ) == 1 ) {
+ $where = key( $where );
+ $this->addWhere( $where );
+ } else {
+ $where2 = [];
+ foreach ( $where as $w => $ns ) {
+ $where2[] = $db->makeList( [ $w, 'ar_namespace' => $ns ], LIST_AND );
+ }
+ $this->addWhere( $db->makeList( $where2, LIST_OR ) );
+ }
+ }
+
+ if ( isset( $params['prefix'] ) ) {
+ $where = [];
+ foreach ( $namespaces as $ns ) {
+ $w = 'ar_title' . $db->buildLike(
+ $this->titlePartToKey( $params['prefix'], $ns ),
+ $db->anyString() );
+ $where[$w][] = $ns;
+ }
+ if ( count( $where ) == 1 ) {
+ $where = key( $where );
+ $this->addWhere( $where );
+ } else {
+ $where2 = [];
+ foreach ( $where as $w => $ns ) {
+ $where2[] = $db->makeList( [ $w, 'ar_namespace' => $ns ], LIST_AND );
+ }
+ $this->addWhere( $db->makeList( $where2, LIST_OR ) );
+ }
+ }
+ } else {
+ if ( $this->getConfig()->get( 'MiserMode' ) ) {
+ $miser_ns = $params['namespace'];
+ } else {
+ $this->addWhereFld( 'ar_namespace', $params['namespace'] );
+ }
+ $this->addTimestampWhereRange( 'ar_timestamp', $dir, $params['start'], $params['end'] );
+ }
+
+ if ( !is_null( $params['user'] ) ) {
+ $this->addWhereFld( 'ar_user_text', $params['user'] );
+ } elseif ( !is_null( $params['excludeuser'] ) ) {
+ $this->addWhere( 'ar_user_text != ' .
+ $db->addQuotes( $params['excludeuser'] ) );
+ }
+
+ if ( !is_null( $params['user'] ) || !is_null( $params['excludeuser'] ) ) {
+ // Paranoia: avoid brute force searches (T19342)
+ // (shouldn't be able to get here without 'deletedhistory', but
+ // check it again just in case)
+ if ( !$user->isAllowed( 'deletedhistory' ) ) {
+ $bitmask = Revision::DELETED_USER;
+ } elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
+ $bitmask = Revision::DELETED_USER | Revision::DELETED_RESTRICTED;
+ } else {
+ $bitmask = 0;
+ }
+ if ( $bitmask ) {
+ $this->addWhere( $db->bitAnd( 'ar_deleted', $bitmask ) . " != $bitmask" );
+ }
+ }
+
+ if ( !is_null( $params['continue'] ) ) {
+ $cont = explode( '|', $params['continue'] );
+ $op = ( $dir == 'newer' ? '>' : '<' );
+ if ( $optimizeGenerateTitles ) {
+ $this->dieContinueUsageIf( count( $cont ) != 2 );
+ $ns = intval( $cont[0] );
+ $this->dieContinueUsageIf( strval( $ns ) !== $cont[0] );
+ $title = $db->addQuotes( $cont[1] );
+ $this->addWhere( "ar_namespace $op $ns OR " .
+ "(ar_namespace = $ns AND ar_title $op= $title)" );
+ } elseif ( $mode == 'all' ) {
+ $this->dieContinueUsageIf( count( $cont ) != 4 );
+ $ns = intval( $cont[0] );
+ $this->dieContinueUsageIf( strval( $ns ) !== $cont[0] );
+ $title = $db->addQuotes( $cont[1] );
+ $ts = $db->addQuotes( $db->timestamp( $cont[2] ) );
+ $ar_id = (int)$cont[3];
+ $this->dieContinueUsageIf( strval( $ar_id ) !== $cont[3] );
+ $this->addWhere( "ar_namespace $op $ns OR " .
+ "(ar_namespace = $ns AND " .
+ "(ar_title $op $title OR " .
+ "(ar_title = $title AND " .
+ "(ar_timestamp $op $ts OR " .
+ "(ar_timestamp = $ts AND " .
+ "ar_id $op= $ar_id)))))" );
+ } else {
+ $this->dieContinueUsageIf( count( $cont ) != 2 );
+ $ts = $db->addQuotes( $db->timestamp( $cont[0] ) );
+ $ar_id = (int)$cont[1];
+ $this->dieContinueUsageIf( strval( $ar_id ) !== $cont[1] );
+ $this->addWhere( "ar_timestamp $op $ts OR " .
+ "(ar_timestamp = $ts AND " .
+ "ar_id $op= $ar_id)" );
+ }
+ }
+
+ $this->addOption( 'LIMIT', $this->limit + 1 );
+
+ $sort = ( $dir == 'newer' ? '' : ' DESC' );
+ $orderby = [];
+ if ( $optimizeGenerateTitles ) {
+ // Targeting index name_title_timestamp
+ if ( $params['namespace'] === null || count( array_unique( $params['namespace'] ) ) > 1 ) {
+ $orderby[] = "ar_namespace $sort";
+ }
+ $orderby[] = "ar_title $sort";
+ } elseif ( $mode == 'all' ) {
+ // Targeting index name_title_timestamp
+ if ( $params['namespace'] === null || count( array_unique( $params['namespace'] ) ) > 1 ) {
+ $orderby[] = "ar_namespace $sort";
+ }
+ $orderby[] = "ar_title $sort";
+ $orderby[] = "ar_timestamp $sort";
+ $orderby[] = "ar_id $sort";
+ } else {
+ // Targeting index usertext_timestamp
+ // 'user' is always constant.
+ $orderby[] = "ar_timestamp $sort";
+ $orderby[] = "ar_id $sort";
+ }
+ $this->addOption( 'ORDER BY', $orderby );
+
+ $res = $this->select( __METHOD__ );
+ $pageMap = []; // Maps ns&title to array index
+ $count = 0;
+ $nextIndex = 0;
+ $generated = [];
+ foreach ( $res as $row ) {
+ if ( ++$count > $this->limit ) {
+ // We've had enough
+ if ( $optimizeGenerateTitles ) {
+ $this->setContinueEnumParameter( 'continue', "$row->ar_namespace|$row->ar_title" );
+ } elseif ( $mode == 'all' ) {
+ $this->setContinueEnumParameter( 'continue',
+ "$row->ar_namespace|$row->ar_title|$row->ar_timestamp|$row->ar_id"
+ );
+ } else {
+ $this->setContinueEnumParameter( 'continue', "$row->ar_timestamp|$row->ar_id" );
+ }
+ break;
+ }
+
+ // Miser mode namespace check
+ if ( $miser_ns !== null && !in_array( $row->ar_namespace, $miser_ns ) ) {
+ continue;
+ }
+
+ if ( $resultPageSet !== null ) {
+ if ( $params['generatetitles'] ) {
+ $key = "{$row->ar_namespace}:{$row->ar_title}";
+ if ( !isset( $generated[$key] ) ) {
+ $generated[$key] = Title::makeTitle( $row->ar_namespace, $row->ar_title );
+ }
+ } else {
+ $generated[] = $row->ar_rev_id;
+ }
+ } else {
+ $revision = Revision::newFromArchiveRow( $row );
+ $rev = $this->extractRevisionInfo( $revision, $row );
+
+ if ( !isset( $pageMap[$row->ar_namespace][$row->ar_title] ) ) {
+ $index = $nextIndex++;
+ $pageMap[$row->ar_namespace][$row->ar_title] = $index;
+ $title = $revision->getTitle();
+ $a = [
+ 'pageid' => $title->getArticleID(),
+ 'revisions' => [ $rev ],
+ ];
+ ApiResult::setIndexedTagName( $a['revisions'], 'rev' );
+ ApiQueryBase::addTitleInfo( $a, $title );
+ $fit = $result->addValue( [ 'query', $this->getModuleName() ], $index, $a );
+ } else {
+ $index = $pageMap[$row->ar_namespace][$row->ar_title];
+ $fit = $result->addValue(
+ [ 'query', $this->getModuleName(), $index, 'revisions' ],
+ null, $rev );
+ }
+ if ( !$fit ) {
+ if ( $mode == 'all' ) {
+ $this->setContinueEnumParameter( 'continue',
+ "$row->ar_namespace|$row->ar_title|$row->ar_timestamp|$row->ar_id"
+ );
+ } else {
+ $this->setContinueEnumParameter( 'continue', "$row->ar_timestamp|$row->ar_id" );
+ }
+ break;
+ }
+ }
+ }
+
+ if ( $resultPageSet !== null ) {
+ if ( $params['generatetitles'] ) {
+ $resultPageSet->populateFromTitles( $generated );
+ } else {
+ $resultPageSet->populateFromRevisionIDs( $generated );
+ }
+ } else {
+ $result->addIndexedTagName( [ 'query', $this->getModuleName() ], 'page' );
+ }
+ }
+
+ public function getAllowedParams() {
+ $ret = parent::getAllowedParams() + [
+ 'user' => [
+ ApiBase::PARAM_TYPE => 'user'
+ ],
+ 'namespace' => [
+ ApiBase::PARAM_ISMULTI => true,
+ ApiBase::PARAM_TYPE => 'namespace',
+ ],
+ 'start' => [
+ ApiBase::PARAM_TYPE => 'timestamp',
+ ApiBase::PARAM_HELP_MSG_INFO => [ [ 'useronly' ] ],
+ ],
+ 'end' => [
+ ApiBase::PARAM_TYPE => 'timestamp',
+ ApiBase::PARAM_HELP_MSG_INFO => [ [ 'useronly' ] ],
+ ],
+ 'dir' => [
+ ApiBase::PARAM_TYPE => [
+ 'newer',
+ 'older'
+ ],
+ ApiBase::PARAM_DFLT => 'older',
+ ApiBase::PARAM_HELP_MSG => 'api-help-param-direction',
+ ],
+ 'from' => [
+ ApiBase::PARAM_HELP_MSG_INFO => [ [ 'nonuseronly' ] ],
+ ],
+ 'to' => [
+ ApiBase::PARAM_HELP_MSG_INFO => [ [ 'nonuseronly' ] ],
+ ],
+ 'prefix' => [
+ ApiBase::PARAM_HELP_MSG_INFO => [ [ 'nonuseronly' ] ],
+ ],
+ 'excludeuser' => [
+ ApiBase::PARAM_TYPE => 'user',
+ ApiBase::PARAM_HELP_MSG_INFO => [ [ 'nonuseronly' ] ],
+ ],
+ 'tag' => null,
+ 'continue' => [
+ ApiBase::PARAM_HELP_MSG => 'api-help-param-continue',
+ ],
+ 'generatetitles' => [
+ ApiBase::PARAM_DFLT => false
+ ],
+ ];
+
+ if ( $this->getConfig()->get( 'MiserMode' ) ) {
+ $ret['user'][ApiBase::PARAM_HELP_MSG_APPEND] = [
+ 'apihelp-query+alldeletedrevisions-param-miser-user-namespace',
+ ];
+ $ret['namespace'][ApiBase::PARAM_HELP_MSG_APPEND] = [
+ 'apihelp-query+alldeletedrevisions-param-miser-user-namespace',
+ ];
+ }
+
+ return $ret;
+ }
+
+ protected function getExamplesMessages() {
+ return [
+ 'action=query&list=alldeletedrevisions&adruser=Example&adrlimit=50'
+ => 'apihelp-query+alldeletedrevisions-example-user',
+ 'action=query&list=alldeletedrevisions&adrdir=newer&adrnamespace=0&adrlimit=50'
+ => 'apihelp-query+alldeletedrevisions-example-ns-main',
+ ];
+ }
+
+ public function getHelpUrls() {
+ return 'https://www.mediawiki.org/wiki/Special:MyLanguage/API:Alldeletedrevisions';
+ }
+}
scripts.mit.edu / autoinstallsdev / mediawiki.git / blobdiff