154a0a03aa
r86782 introduced validation of parameter combinations for list=deletedrevs, but screwed up in that it disallowed drcontinue in "mode 1" (list all deleted revisions for the specified titles). Apparently no one uses this much, because it doesn't seem to have been reported as a bug despite being broken since April 2011. Change-Id: I30691d04fab759ee56fb4156d475fbb21b81ab45
423 lines
15 KiB
PHP
423 lines
15 KiB
PHP
<?php
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/**
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*
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*
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* Created on Jul 2, 2007
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*
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* Copyright © 2007 Roan Kattouw "<Firstname>.<Lastname>@gmail.com"
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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*/
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/**
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* Query module to enumerate all deleted revisions.
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*
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* @ingroup API
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*/
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class ApiQueryDeletedrevs extends ApiQueryBase {
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public function __construct( $query, $moduleName ) {
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parent::__construct( $query, $moduleName, 'dr' );
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}
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public function execute() {
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$user = $this->getUser();
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// Before doing anything at all, let's check permissions
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if ( !$user->isAllowed( 'deletedhistory' ) ) {
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$this->dieUsage( 'You don\'t have permission to view deleted revision information', 'permissiondenied' );
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}
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$db = $this->getDB();
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$params = $this->extractRequestParams( false );
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$prop = array_flip( $params['prop'] );
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$fld_parentid = isset( $prop['parentid'] );
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$fld_revid = isset( $prop['revid'] );
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$fld_user = isset( $prop['user'] );
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$fld_userid = isset( $prop['userid'] );
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$fld_comment = isset( $prop['comment'] );
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$fld_parsedcomment = isset ( $prop['parsedcomment'] );
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$fld_minor = isset( $prop['minor'] );
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$fld_len = isset( $prop['len'] );
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$fld_sha1 = isset( $prop['sha1'] );
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$fld_content = isset( $prop['content'] );
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$fld_token = isset( $prop['token'] );
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$result = $this->getResult();
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$pageSet = $this->getPageSet();
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$titles = $pageSet->getTitles();
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// This module operates in three modes:
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// 'revs': List deleted revs for certain titles (1)
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// 'user': List deleted revs by a certain user (2)
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// 'all': List all deleted revs in NS (3)
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$mode = 'all';
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if ( count( $titles ) > 0 ) {
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$mode = 'revs';
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} elseif ( !is_null( $params['user'] ) ) {
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$mode = 'user';
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}
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if ( $mode == 'revs' || $mode == 'user' ) {
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// Ignore namespace and unique due to inability to know whether they were purposely set
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foreach( array( 'from', 'to', 'prefix', /*'namespace', 'unique'*/ ) as $p ) {
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if ( !is_null( $params[$p] ) ) {
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$this->dieUsage( "The '{$p}' parameter cannot be used in modes 1 or 2", 'badparams' );
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}
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}
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} else {
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foreach( array( 'start', 'end' ) as $p ) {
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if ( !is_null( $params[$p] ) ) {
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$this->dieUsage( "The {$p} parameter cannot be used in mode 3", 'badparams' );
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}
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}
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}
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if ( !is_null( $params['user'] ) && !is_null( $params['excludeuser'] ) ) {
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$this->dieUsage( 'user and excludeuser cannot be used together', 'badparams' );
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}
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$this->addTables( 'archive' );
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$this->addWhere( 'ar_deleted = 0' );
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$this->addFields( array( 'ar_title', 'ar_namespace', 'ar_timestamp' ) );
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$this->addFieldsIf( 'ar_parent_id', $fld_parentid );
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$this->addFieldsIf( 'ar_rev_id', $fld_revid );
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$this->addFieldsIf( 'ar_user_text', $fld_user );
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$this->addFieldsIf( 'ar_user', $fld_userid );
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$this->addFieldsIf( 'ar_comment', $fld_comment || $fld_parsedcomment );
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$this->addFieldsIf( 'ar_minor_edit', $fld_minor );
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$this->addFieldsIf( 'ar_len', $fld_len );
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$this->addFieldsIf( 'ar_sha1', $fld_sha1 );
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if ( $fld_content ) {
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$this->addTables( 'text' );
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$this->addFields( array( 'ar_text', 'ar_text_id', 'old_text', 'old_flags' ) );
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$this->addWhere( 'ar_text_id = old_id' );
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// This also means stricter restrictions
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if ( !$user->isAllowed( 'undelete' ) ) {
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$this->dieUsage( 'You don\'t have permission to view deleted revision content', 'permissiondenied' );
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}
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}
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// Check limits
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$userMax = $fld_content ? ApiBase::LIMIT_SML1 : ApiBase::LIMIT_BIG1;
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$botMax = $fld_content ? ApiBase::LIMIT_SML2 : ApiBase::LIMIT_BIG2;
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$limit = $params['limit'];
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if ( $limit == 'max' ) {
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$limit = $this->getMain()->canApiHighLimits() ? $botMax : $userMax;
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$this->getResult()->setParsedLimit( $this->getModuleName(), $limit );
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}
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$this->validateLimit( 'limit', $limit, 1, $userMax, $botMax );
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if ( $fld_token ) {
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// Undelete tokens are identical for all pages, so we cache one here
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$token = $user->getEditToken( '', $this->getMain()->getRequest() );
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}
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$dir = $params['dir'];
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// We need a custom WHERE clause that matches all titles.
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if ( $mode == 'revs' ) {
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$lb = new LinkBatch( $titles );
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$where = $lb->constructSet( 'ar', $db );
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$this->addWhere( $where );
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} elseif ( $mode == 'all' ) {
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$this->addWhereFld( 'ar_namespace', $params['namespace'] );
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$from = is_null( $params['from'] ) ? null : $this->titleToKey( $params['from'] );
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$to = is_null( $params['to'] ) ? null : $this->titleToKey( $params['to'] );
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$this->addWhereRange( 'ar_title', $dir, $from, $to );
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if ( isset( $params['prefix'] ) ) {
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$this->addWhere( 'ar_title' . $db->buildLike( $this->titlePartToKey( $params['prefix'] ), $db->anyString() ) );
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}
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}
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if ( !is_null( $params['user'] ) ) {
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$this->addWhereFld( 'ar_user_text', $params['user'] );
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} elseif ( !is_null( $params['excludeuser'] ) ) {
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$this->addWhere( 'ar_user_text != ' .
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$db->addQuotes( $params['excludeuser'] ) );
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}
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if ( !is_null( $params['continue'] ) && ( $mode == 'all' || $mode == 'revs' ) ) {
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$cont = explode( '|', $params['continue'] );
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$this->dieContinueUsageIf( count( $cont ) != 3 );
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$ns = intval( $cont[0] );
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$this->dieContinueUsageIf( strval( $ns ) !== $cont[0] );
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$title = $db->addQuotes( $cont[1] );
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$ts = $db->addQuotes( $db->timestamp( $cont[2] ) );
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$op = ( $dir == 'newer' ? '>' : '<' );
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$this->addWhere( "ar_namespace $op $ns OR " .
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"(ar_namespace = $ns AND " .
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"(ar_title $op $title OR " .
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"(ar_title = $title AND " .
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"ar_timestamp $op= $ts)))" );
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}
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$this->addOption( 'LIMIT', $limit + 1 );
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$this->addOption( 'USE INDEX', array( 'archive' => ( $mode == 'user' ? 'usertext_timestamp' : 'name_title_timestamp' ) ) );
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if ( $mode == 'all' ) {
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if ( $params['unique'] ) {
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$this->addOption( 'GROUP BY', 'ar_title' );
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} else {
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$sort = ( $dir == 'newer' ? '' : ' DESC' );
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$this->addOption( 'ORDER BY', array(
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'ar_title' . $sort,
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'ar_timestamp' . $sort
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));
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}
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} else {
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if ( $mode == 'revs' ) {
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// Sort by ns and title in the same order as timestamp for efficiency
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$this->addWhereRange( 'ar_namespace', $dir, null, null );
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$this->addWhereRange( 'ar_title', $dir, null, null );
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}
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$this->addTimestampWhereRange( 'ar_timestamp', $dir, $params['start'], $params['end'] );
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}
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$res = $this->select( __METHOD__ );
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$pageMap = array(); // Maps ns&title to (fake) pageid
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$count = 0;
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$newPageID = 0;
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foreach ( $res as $row ) {
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if ( ++$count > $limit ) {
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// We've had enough
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if ( $mode == 'all' || $mode == 'revs' ) {
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$this->setContinueEnumParameter( 'continue', intval( $row->ar_namespace ) . '|' .
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$row->ar_title . '|' . $row->ar_timestamp );
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} else {
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$this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->ar_timestamp ) );
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}
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break;
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}
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$rev = array();
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$rev['timestamp'] = wfTimestamp( TS_ISO_8601, $row->ar_timestamp );
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if ( $fld_revid ) {
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$rev['revid'] = intval( $row->ar_rev_id );
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}
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if ( $fld_parentid && !is_null( $row->ar_parent_id ) ) {
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$rev['parentid'] = intval( $row->ar_parent_id );
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}
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if ( $fld_user ) {
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$rev['user'] = $row->ar_user_text;
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}
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if ( $fld_userid ) {
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$rev['userid'] = $row->ar_user;
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}
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if ( $fld_comment ) {
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$rev['comment'] = $row->ar_comment;
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}
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$title = Title::makeTitle( $row->ar_namespace, $row->ar_title );
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if ( $fld_parsedcomment ) {
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$rev['parsedcomment'] = Linker::formatComment( $row->ar_comment, $title );
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}
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if ( $fld_minor && $row->ar_minor_edit == 1 ) {
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$rev['minor'] = '';
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}
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if ( $fld_len ) {
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$rev['len'] = $row->ar_len;
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}
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if ( $fld_sha1 ) {
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if ( $row->ar_sha1 != '' ) {
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$rev['sha1'] = wfBaseConvert( $row->ar_sha1, 36, 16, 40 );
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} else {
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$rev['sha1'] = '';
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}
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}
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if ( $fld_content ) {
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ApiResult::setContent( $rev, Revision::getRevisionText( $row ) );
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}
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if ( !isset( $pageMap[$row->ar_namespace][$row->ar_title] ) ) {
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$pageID = $newPageID++;
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$pageMap[$row->ar_namespace][$row->ar_title] = $pageID;
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$a['revisions'] = array( $rev );
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$result->setIndexedTagName( $a['revisions'], 'rev' );
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ApiQueryBase::addTitleInfo( $a, $title );
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if ( $fld_token ) {
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$a['token'] = $token;
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}
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$fit = $result->addValue( array( 'query', $this->getModuleName() ), $pageID, $a );
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} else {
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$pageID = $pageMap[$row->ar_namespace][$row->ar_title];
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$fit = $result->addValue(
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array( 'query', $this->getModuleName(), $pageID, 'revisions' ),
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null, $rev );
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}
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if ( !$fit ) {
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if ( $mode == 'all' || $mode == 'revs' ) {
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$this->setContinueEnumParameter( 'continue', intval( $row->ar_namespace ) . '|' .
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$row->ar_title . '|' . $row->ar_timestamp );
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} else {
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$this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->ar_timestamp ) );
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}
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break;
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}
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}
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$result->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'page' );
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}
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public function getAllowedParams() {
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return array(
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'start' => array(
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ApiBase::PARAM_TYPE => 'timestamp'
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),
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'end' => array(
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ApiBase::PARAM_TYPE => 'timestamp',
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),
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'dir' => array(
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ApiBase::PARAM_TYPE => array(
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'newer',
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'older'
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),
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ApiBase::PARAM_DFLT => 'older'
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),
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'from' => null,
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'to' => null,
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'prefix' => null,
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'continue' => null,
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'unique' => false,
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'user' => array(
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ApiBase::PARAM_TYPE => 'user'
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),
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'excludeuser' => array(
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ApiBase::PARAM_TYPE => 'user'
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),
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'namespace' => array(
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ApiBase::PARAM_TYPE => 'namespace',
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ApiBase::PARAM_DFLT => NS_MAIN,
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),
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'limit' => array(
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ApiBase::PARAM_DFLT => 10,
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ApiBase::PARAM_TYPE => 'limit',
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ApiBase::PARAM_MIN => 1,
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ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
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ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
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),
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'prop' => array(
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ApiBase::PARAM_DFLT => 'user|comment',
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ApiBase::PARAM_TYPE => array(
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'revid',
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'parentid',
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'user',
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'userid',
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'comment',
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'parsedcomment',
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'minor',
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'len',
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'sha1',
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'content',
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'token'
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),
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ApiBase::PARAM_ISMULTI => true
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),
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);
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}
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public function getParamDescription() {
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return array(
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'start' => 'The timestamp to start enumerating from (1, 2)',
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'end' => 'The timestamp to stop enumerating at (1, 2)',
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'dir' => $this->getDirectionDescription( $this->getModulePrefix(), ' (1, 3)' ),
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'from' => 'Start listing at this title (3)',
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'to' => 'Stop listing at this title (3)',
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'prefix' => 'Search for all page titles that begin with this value (3)',
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'limit' => 'The maximum amount of revisions to list',
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'prop' => array(
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'Which properties to get',
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' revid - Adds the revision ID of the deleted revision',
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' parentid - Adds the revision ID of the previous revision to the page',
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' user - Adds the user who made the revision',
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' userid - Adds the user ID whom made the revision',
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' comment - Adds the comment of the revision',
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' parsedcomment - Adds the parsed comment of the revision',
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' minor - Tags if the revision is minor',
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' len - Adds the length (bytes) of the revision',
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' sha1 - Adds the SHA-1 (base 16) of the revision',
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' content - Adds the content of the revision',
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' token - Gives the edit token',
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),
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'namespace' => 'Only list pages in this namespace (3)',
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'user' => 'Only list revisions by this user',
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'excludeuser' => 'Don\'t list revisions by this user',
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'continue' => 'When more results are available, use this to continue (1, 3)',
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'unique' => 'List only one revision for each page (3)',
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);
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}
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public function getResultProperties() {
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return array(
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'' => array(
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'ns' => 'namespace',
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'title' => 'string'
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),
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'token' => array(
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'token' => 'string'
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)
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);
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}
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public function getDescription() {
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$p = $this->getModulePrefix();
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return array(
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'List deleted revisions.',
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'Operates in three modes:',
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' 1) List deleted revisions for the given title(s), sorted by timestamp',
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' 2) List deleted contributions for the given user, sorted by timestamp (no titles specified)',
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" 3) List all deleted revisions in the given namespace, sorted by title and timestamp (no titles specified, {$p}user not set)",
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'Certain parameters only apply to some modes and are ignored in others.',
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'For instance, a parameter marked (1) only applies to mode 1 and is ignored in modes 2 and 3',
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);
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}
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public function getPossibleErrors() {
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return array_merge( parent::getPossibleErrors(), array(
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array( 'code' => 'permissiondenied', 'info' => 'You don\'t have permission to view deleted revision information' ),
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array( 'code' => 'badparams', 'info' => 'user and excludeuser cannot be used together' ),
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array( 'code' => 'permissiondenied', 'info' => 'You don\'t have permission to view deleted revision content' ),
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array( 'code' => 'badparams', 'info' => "The 'from' parameter cannot be used in modes 1 or 2" ),
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array( 'code' => 'badparams', 'info' => "The 'to' parameter cannot be used in modes 1 or 2" ),
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array( 'code' => 'badparams', 'info' => "The 'prefix' parameter cannot be used in modes 1 or 2" ),
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array( 'code' => 'badparams', 'info' => "The 'start' parameter cannot be used in mode 3" ),
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array( 'code' => 'badparams', 'info' => "The 'end' parameter cannot be used in mode 3" ),
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) );
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}
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public function getExamples() {
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return array(
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'api.php?action=query&list=deletedrevs&titles=Main%20Page|Talk:Main%20Page&drprop=user|comment|content'
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=> 'List the last deleted revisions of Main Page and Talk:Main Page, with content (mode 1)',
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'api.php?action=query&list=deletedrevs&druser=Bob&drlimit=50'
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=> 'List the last 50 deleted contributions by Bob (mode 2)',
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'api.php?action=query&list=deletedrevs&drdir=newer&drlimit=50'
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=> 'List the first 50 deleted revisions in the main namespace (mode 3)',
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'api.php?action=query&list=deletedrevs&drdir=newer&drlimit=50&drnamespace=1&drunique='
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=> 'List the first 50 deleted pages in the Talk namespace (mode 3):',
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);
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}
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public function getHelpUrls() {
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return 'https://www.mediawiki.org/wiki/API:Deletedrevs';
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}
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}
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