Merge "Whitelist the <wbr> element."

[mediawiki.git] / includes / api / ApiQueryBlocks.php

<?php
/**
 *
 *
 * Created on Sep 10, 2007
 *
 * 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 user blocks
 *
 * @ingroup API
 */
class ApiQueryBlocks extends ApiQueryBase {

        /**
         * @var Array
         */
        protected $usernames;

        public function __construct( $query, $moduleName ) {
                parent::__construct( $query, $moduleName, 'bk' );
        }

        public function execute() {
                global $wgContLang;

                $params = $this->extractRequestParams();
                $this->requireMaxOneParameter( $params, 'users', 'ip' );

                $prop = array_flip( $params['prop'] );
                $fld_id = isset( $prop['id'] );
                $fld_user = isset( $prop['user'] );
                $fld_userid = isset( $prop['userid'] );
                $fld_by = isset( $prop['by'] );
                $fld_byid = isset( $prop['byid'] );
                $fld_timestamp = isset( $prop['timestamp'] );
                $fld_expiry = isset( $prop['expiry'] );
                $fld_reason = isset( $prop['reason'] );
                $fld_range = isset( $prop['range'] );
                $fld_flags = isset( $prop['flags'] );

                $result = $this->getResult();

                $this->addTables( 'ipblocks' );
                $this->addFields( 'ipb_auto' );

                $this->addFieldsIf( 'ipb_id', $fld_id );
                $this->addFieldsIf( array( 'ipb_address', 'ipb_user' ), $fld_user || $fld_userid );
                $this->addFieldsIf( 'ipb_by_text', $fld_by );
                $this->addFieldsIf( 'ipb_by', $fld_byid );
                $this->addFieldsIf( 'ipb_timestamp', $fld_timestamp );
                $this->addFieldsIf( 'ipb_expiry', $fld_expiry );
                $this->addFieldsIf( 'ipb_reason', $fld_reason );
                $this->addFieldsIf( array( 'ipb_range_start', 'ipb_range_end' ), $fld_range );
                $this->addFieldsIf( array( 'ipb_anon_only', 'ipb_create_account', 'ipb_enable_autoblock',
                                                                        'ipb_block_email', 'ipb_deleted', 'ipb_allow_usertalk' ),
                                                        $fld_flags );

                $this->addOption( 'LIMIT', $params['limit'] + 1 );
                $this->addTimestampWhereRange( 'ipb_timestamp', $params['dir'], $params['start'], $params['end'] );

                $db = $this->getDB();

                if ( isset( $params['ids'] ) ) {
                        $this->addWhereFld( 'ipb_id', $params['ids'] );
                }
                if ( isset( $params['users'] ) ) {
                        foreach ( (array)$params['users'] as $u ) {
                                $this->prepareUsername( $u );
                        }
                        $this->addWhereFld( 'ipb_address', $this->usernames );
                        $this->addWhereFld( 'ipb_auto', 0 );
                }
                if ( isset( $params['ip'] ) ) {
                        global $wgBlockCIDRLimit;
                        if ( IP::isIPv4( $params['ip'] ) ) {
                                $type = 'IPv4';
                                $cidrLimit = $wgBlockCIDRLimit['IPv4'];
                                $prefixLen = 0;
                        } elseif ( IP::isIPv6( $params['ip'] ) ) {
                                $type = 'IPv6';
                                $cidrLimit = $wgBlockCIDRLimit['IPv6'];
                                $prefixLen = 3; // IP::toHex output is prefixed with "v6-"
                        } else {
                                $this->dieUsage( 'IP parameter is not valid', 'param_ip' );
                        }

                        # Check range validity, if it's a CIDR
                        list( $ip, $range ) = IP::parseCIDR( $params['ip'] );
                        if ( $ip !== false && $range !== false && $range < $cidrLimit ) {
                                $this->dieUsage( "$type CIDR ranges broader than /$cidrLimit are not accepted", 'cidrtoobroad' );
                        }

                        # Let IP::parseRange handle calculating $upper, instead of duplicating the logic here.
                        list( $lower, $upper ) = IP::parseRange( $params['ip'] );

                        # Extract the common prefix to any rangeblock affecting this IP/CIDR
                        $prefix = substr( $lower, 0, $prefixLen + floor( $cidrLimit / 4 ) );

                        # Fairly hard to make a malicious SQL statement out of hex characters,
                        # but it is good practice to add quotes
                        $lower = $db->addQuotes( $lower );
                        $upper = $db->addQuotes( $upper );

                        $this->addWhere( array(
                                'ipb_range_start' . $db->buildLike( $prefix, $db->anyString() ),
                                'ipb_range_start <= ' . $lower,
                                'ipb_range_end >= ' . $upper,
                                'ipb_auto' => 0
                        ) );
                }

                if ( !is_null( $params['show'] ) ) {
                        $show = array_flip( $params['show'] );

                        /* Check for conflicting parameters. */
                        if ( ( isset( $show['account'] ) && isset( $show['!account'] ) )
                                        || ( isset( $show['ip'] ) && isset( $show['!ip'] ) )
                                        || ( isset( $show['range'] ) && isset( $show['!range'] ) )
                                        || ( isset( $show['temp'] ) && isset( $show['!temp'] ) )
                        ) {
                                $this->dieUsageMsg( 'show' );
                        }

                        $this->addWhereIf( 'ipb_user = 0', isset( $show['!account'] ) );
                        $this->addWhereIf( 'ipb_user != 0', isset( $show['account'] ) );
                        $this->addWhereIf( 'ipb_user != 0 OR ipb_range_end > ipb_range_start', isset( $show['!ip'] ) );
                        $this->addWhereIf( 'ipb_user = 0 AND ipb_range_end = ipb_range_start', isset( $show['ip'] ) );
                        $this->addWhereIf( 'ipb_expiry = ' . $db->addQuotes( $db->getInfinity() ), isset( $show['!temp'] ) );
                        $this->addWhereIf( 'ipb_expiry != ' . $db->addQuotes( $db->getInfinity() ), isset( $show['temp'] ) );
                        $this->addWhereIf( 'ipb_range_end = ipb_range_start', isset( $show['!range'] ) );
                        $this->addWhereIf( 'ipb_range_end > ipb_range_start', isset( $show['range'] ) );
                }

                if ( !$this->getUser()->isAllowed( 'hideuser' ) ) {
                        $this->addWhereFld( 'ipb_deleted', 0 );
                }

                // Purge expired entries on one in every 10 queries
                if ( !mt_rand( 0, 10 ) ) {
                        Block::purgeExpired();
                }

                $res = $this->select( __METHOD__ );

                $count = 0;
                foreach ( $res as $row ) {
                        if ( ++$count > $params['limit'] ) {
                                // We've had enough
                                $this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->ipb_timestamp ) );
                                break;
                        }
                        $block = array();
                        if ( $fld_id ) {
                                $block['id'] = $row->ipb_id;
                        }
                        if ( $fld_user && !$row->ipb_auto ) {
                                $block['user'] = $row->ipb_address;
                        }
                        if ( $fld_userid && !$row->ipb_auto ) {
                                $block['userid'] = $row->ipb_user;
                        }
                        if ( $fld_by ) {
                                $block['by'] = $row->ipb_by_text;
                        }
                        if ( $fld_byid ) {
                                $block['byid'] = $row->ipb_by;
                        }
                        if ( $fld_timestamp ) {
                                $block['timestamp'] = wfTimestamp( TS_ISO_8601, $row->ipb_timestamp );
                        }
                        if ( $fld_expiry ) {
                                $block['expiry'] = $wgContLang->formatExpiry( $row->ipb_expiry, TS_ISO_8601 );
                        }
                        if ( $fld_reason ) {
                                $block['reason'] = $row->ipb_reason;
                        }
                        if ( $fld_range && !$row->ipb_auto ) {
                                $block['rangestart'] = IP::formatHex( $row->ipb_range_start );
                                $block['rangeend'] = IP::formatHex( $row->ipb_range_end );
                        }
                        if ( $fld_flags ) {
                                // For clarity, these flags use the same names as their action=block counterparts
                                if ( $row->ipb_auto ) {
                                        $block['automatic'] = '';
                                }
                                if ( $row->ipb_anon_only ) {
                                        $block['anononly'] = '';
                                }
                                if ( $row->ipb_create_account ) {
                                        $block['nocreate'] = '';
                                }
                                if ( $row->ipb_enable_autoblock ) {
                                        $block['autoblock'] = '';
                                }
                                if ( $row->ipb_block_email ) {
                                        $block['noemail'] = '';
                                }
                                if ( $row->ipb_deleted ) {
                                        $block['hidden'] = '';
                                }
                                if ( $row->ipb_allow_usertalk ) {
                                        $block['allowusertalk'] = '';
                                }
                        }
                        $fit = $result->addValue( array( 'query', $this->getModuleName() ), null, $block );
                        if ( !$fit ) {
                                $this->setContinueEnumParameter( 'start', wfTimestamp( TS_ISO_8601, $row->ipb_timestamp ) );
                                break;
                        }
                }
                $result->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'block' );
        }

        protected function prepareUsername( $user ) {
                if ( !$user ) {
                        $this->dieUsage( 'User parameter may not be empty', 'param_user' );
                }
                $name = User::isIP( $user )
                        ? $user
                        : User::getCanonicalName( $user, 'valid' );
                if ( $name === false ) {
                        $this->dieUsage( "User name {$user} is not valid", 'param_user' );
                }
                $this->usernames[] = $name;
        }

        public function getAllowedParams() {
                return array(
                        'start' => array(
                                ApiBase::PARAM_TYPE => 'timestamp'
                        ),
                        'end' => array(
                                ApiBase::PARAM_TYPE => 'timestamp',
                        ),
                        'dir' => array(
                                ApiBase::PARAM_TYPE => array(
                                        'newer',
                                        'older'
                                ),
                                ApiBase::PARAM_DFLT => 'older'
                        ),
                        'ids' => array(
                                ApiBase::PARAM_TYPE => 'integer',
                                ApiBase::PARAM_ISMULTI => true
                        ),
                        'users' => array(
                                ApiBase::PARAM_ISMULTI => true
                        ),
                        'ip' => 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
                        ),
                        'prop' => array(
                                ApiBase::PARAM_DFLT => 'id|user|by|timestamp|expiry|reason|flags',
                                ApiBase::PARAM_TYPE => array(
                                        'id',
                                        'user',
                                        'userid',
                                        'by',
                                        'byid',
                                        'timestamp',
                                        'expiry',
                                        'reason',
                                        'range',
                                        'flags'
                                ),
                                ApiBase::PARAM_ISMULTI => true
                        ),
                        'show' => array(
                                ApiBase::PARAM_TYPE => array(
                                        'account',
                                        '!account',
                                        'temp',
                                        '!temp',
                                        'ip',
                                        '!ip',
                                        'range',
                                        '!range',
                                ),
                                ApiBase::PARAM_ISMULTI => true
                        ),
                );
        }

        public function getParamDescription() {
                global $wgBlockCIDRLimit;
                $p = $this->getModulePrefix();
                return array(
                        'start' => 'The timestamp to start enumerating from',
                        'end' => 'The timestamp to stop enumerating at',
                        'dir' => $this->getDirectionDescription( $p ),
                        'ids' => 'List of block IDs to list (optional)',
                        'users' => 'List of users to search for (optional)',
                        'ip' => array(
                                'Get all blocks applying to this IP or CIDR range, including range blocks.',
                                "Cannot be used together with bkusers. CIDR ranges broader than " .
                                        "IPv4/{$wgBlockCIDRLimit['IPv4']} or IPv6/{$wgBlockCIDRLimit['IPv6']} " .
                                        "are not accepted"
                        ),
                        'limit' => 'The maximum amount of blocks to list',
                        'prop' => array(
                                'Which properties to get',
                                ' id         - Adds the ID of the block',
                                ' user       - Adds the username of the blocked user',
                                ' userid     - Adds the user ID of the blocked user',
                                ' by         - Adds the username of the blocking user',
                                ' byid       - Adds the user ID of the blocking user',
                                ' timestamp  - Adds the timestamp of when the block was given',
                                ' expiry     - Adds the timestamp of when the block expires',
                                ' reason     - Adds the reason given for the block',
                                ' range      - Adds the range of IPs affected by the block',
                                ' flags      - Tags the ban with (autoblock, anononly, etc)',
                        ),
                        'show' => array(
                                'Show only items that meet this criteria.',
                                "For example, to see only indefinite blocks on IPs, set {$p}show=ip|!temp"
                        ),
                );
        }

        public function getResultProperties() {
                return array(
                        'id' => array(
                                'id' => 'integer'
                        ),
                        'user' => array(
                                'user' => array(
                                        ApiBase::PROP_TYPE => 'string',
                                        ApiBase::PROP_NULLABLE => true
                                )
                        ),
                        'userid' => array(
                                'userid' => array(
                                        ApiBase::PROP_TYPE => 'integer',
                                        ApiBase::PROP_NULLABLE => true
                                )
                        ),
                        'by' => array(
                                'by' => 'string'
                        ),
                        'byid' => array(
                                'byid' => 'integer'
                        ),
                        'timestamp' => array(
                                'timestamp' => 'timestamp'
                        ),
                        'expiry' => array(
                                'expiry' => 'timestamp'
                        ),
                        'reason' => array(
                                'reason' => 'string'
                        ),
                        'range' => array(
                                'rangestart' => array(
                                        ApiBase::PROP_TYPE => 'string',
                                        ApiBase::PROP_NULLABLE => true
                                ),
                                'rangeend' => array(
                                        ApiBase::PROP_TYPE => 'string',
                                        ApiBase::PROP_NULLABLE => true
                                )
                        ),
                        'flags' => array(
                                'automatic' => 'boolean',
                                'anononly' => 'boolean',
                                'nocreate' => 'boolean',
                                'autoblock' => 'boolean',
                                'noemail' => 'boolean',
                                'hidden' => 'boolean',
                                'allowusertalk' => 'boolean'
                        )
                );
        }

        public function getDescription() {
                return 'List all blocked users and IP addresses';
        }

        public function getPossibleErrors() {
                global $wgBlockCIDRLimit;
                return array_merge( parent::getPossibleErrors(),
                        $this->getRequireOnlyOneParameterErrorMessages( array( 'users', 'ip' ) ),
                        array(
                                array(
                                        'code' => 'cidrtoobroad',
                                        'info' => "IPv4 CIDR ranges broader than /{$wgBlockCIDRLimit['IPv4']} are not accepted"
                                ),
                                array(
                                        'code' => 'cidrtoobroad',
                                        'info' => "IPv6 CIDR ranges broader than /{$wgBlockCIDRLimit['IPv6']} are not accepted"
                                ),
                                array( 'code' => 'param_ip', 'info' => 'IP parameter is not valid' ),
                                array( 'code' => 'param_user', 'info' => 'User parameter may not be empty' ),
                                array( 'code' => 'param_user', 'info' => 'User name user is not valid' ),
                                array( 'show' ),
                        )
                );
        }

        public function getExamples() {
                return array(
                        'api.php?action=query&list=blocks',
                        'api.php?action=query&list=blocks&bkusers=Alice|Bob'
                );
        }

        public function getHelpUrls() {
                return 'https://www.mediawiki.org/wiki/API:Blocks';
        }
}