Set Redis::OPT_READ_TIMEOUT by default

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

<?php
/**
 *
 *
 * Created on July 30, 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 get information about a list of users
 *
 * @ingroup API
 */
class ApiQueryUsers extends ApiQueryBase {

        private $tokenFunctions, $prop;

        /**
         * Properties whose contents does not depend on who is looking at them. If the usprops field
         * contains anything not listed here, the cache mode will never be public for logged-in users.
         * @var array
         */
        protected static $publicProps = array(
                // everything except 'blockinfo' which might show hidden records if the user
                // making the request has the appropriate permissions
                'groups',
                'implicitgroups',
                'rights',
                'editcount',
                'registration',
                'emailable',
                'gender',
        );

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

        /**
         * Get an array mapping token names to their handler functions.
         * The prototype for a token function is func($user)
         * it should return a token or false (permission denied)
         * @return array Array of tokenname => function
         */
        protected function getTokenFunctions() {
                // Don't call the hooks twice
                if ( isset( $this->tokenFunctions ) ) {
                        return $this->tokenFunctions;
                }

                // If we're in JSON callback mode, no tokens can be obtained
                if ( !is_null( $this->getMain()->getRequest()->getVal( 'callback' ) ) ) {
                        return array();
                }

                $this->tokenFunctions = array(
                        'userrights' => array( 'ApiQueryUsers', 'getUserrightsToken' ),
                );
                wfRunHooks( 'APIQueryUsersTokens', array( &$this->tokenFunctions ) );

                return $this->tokenFunctions;
        }

        /**
         * @param User $user
         * @return string
         */
        public static function getUserrightsToken( $user ) {
                global $wgUser;

                // Since the permissions check for userrights is non-trivial,
                // don't bother with it here
                return $wgUser->getEditToken( $user->getName() );
        }

        public function execute() {
                $params = $this->extractRequestParams();

                if ( !is_null( $params['prop'] ) ) {
                        $this->prop = array_flip( $params['prop'] );
                } else {
                        $this->prop = array();
                }

                $users = (array)$params['users'];
                $goodNames = $done = array();
                $result = $this->getResult();
                // Canonicalize user names
                foreach ( $users as $u ) {
                        $n = User::getCanonicalName( $u );
                        if ( $n === false || $n === '' ) {
                                $vals = array( 'name' => $u, 'invalid' => '' );
                                $fit = $result->addValue( array( 'query', $this->getModuleName() ),
                                        null, $vals );
                                if ( !$fit ) {
                                        $this->setContinueEnumParameter( 'users',
                                                implode( '|', array_diff( $users, $done ) ) );
                                        $goodNames = array();
                                        break;
                                }
                                $done[] = $u;
                        } else {
                                $goodNames[] = $n;
                        }
                }

                $result = $this->getResult();

                if ( count( $goodNames ) ) {
                        $this->addTables( 'user' );
                        $this->addFields( User::selectFields() );
                        $this->addWhereFld( 'user_name', $goodNames );

                        $this->showHiddenUsersAddBlockInfo( isset( $this->prop['blockinfo'] ) );

                        $data = array();
                        $res = $this->select( __METHOD__ );
                        $this->resetQueryParams();

                        // get user groups if needed
                        if ( isset( $this->prop['groups'] ) || isset( $this->prop['rights'] ) ) {
                                $userGroups = array();

                                $this->addTables( 'user' );
                                $this->addWhereFld( 'user_name', $goodNames );
                                $this->addTables( 'user_groups' );
                                $this->addJoinConds( array( 'user_groups' => array( 'INNER JOIN', 'ug_user=user_id' ) ) );
                                $this->addFields( array( 'user_name', 'ug_group' ) );
                                $userGroupsRes = $this->select( __METHOD__ );

                                foreach ( $userGroupsRes as $row ) {
                                        $userGroups[$row->user_name][] = $row->ug_group;
                                }
                        }

                        foreach ( $res as $row ) {
                                // create user object and pass along $userGroups if set
                                // that reduces the number of database queries needed in User dramatically
                                if ( !isset( $userGroups ) ) {
                                        $user = User::newFromRow( $row );
                                } else {
                                        if ( !isset( $userGroups[$row->user_name] ) || !is_array( $userGroups[$row->user_name] ) ) {
                                                $userGroups[$row->user_name] = array();
                                        }
                                        $user = User::newFromRow( $row, array( 'user_groups' => $userGroups[$row->user_name] ) );
                                }
                                $name = $user->getName();

                                $data[$name]['userid'] = $user->getId();
                                $data[$name]['name'] = $name;

                                if ( isset( $this->prop['editcount'] ) ) {
                                        $data[$name]['editcount'] = $user->getEditCount();
                                }

                                if ( isset( $this->prop['registration'] ) ) {
                                        $data[$name]['registration'] = wfTimestampOrNull( TS_ISO_8601, $user->getRegistration() );
                                }

                                if ( isset( $this->prop['groups'] ) ) {
                                        $data[$name]['groups'] = $user->getEffectiveGroups();
                                }

                                if ( isset( $this->prop['implicitgroups'] ) ) {
                                        $data[$name]['implicitgroups'] = $user->getAutomaticGroups();
                                }

                                if ( isset( $this->prop['rights'] ) ) {
                                        $data[$name]['rights'] = $user->getRights();
                                }
                                if ( $row->ipb_deleted ) {
                                        $data[$name]['hidden'] = '';
                                }
                                if ( isset( $this->prop['blockinfo'] ) && !is_null( $row->ipb_by_text ) ) {
                                        $data[$name]['blockid'] = $row->ipb_id;
                                        $data[$name]['blockedby'] = $row->ipb_by_text;
                                        $data[$name]['blockedbyid'] = $row->ipb_by;
                                        $data[$name]['blockreason'] = $row->ipb_reason;
                                        $data[$name]['blockexpiry'] = $row->ipb_expiry;
                                }

                                if ( isset( $this->prop['emailable'] ) && $user->canReceiveEmail() ) {
                                        $data[$name]['emailable'] = '';
                                }

                                if ( isset( $this->prop['gender'] ) ) {
                                        $gender = $user->getOption( 'gender' );
                                        if ( strval( $gender ) === '' ) {
                                                $gender = 'unknown';
                                        }
                                        $data[$name]['gender'] = $gender;
                                }

                                if ( !is_null( $params['token'] ) ) {
                                        $tokenFunctions = $this->getTokenFunctions();
                                        foreach ( $params['token'] as $t ) {
                                                $val = call_user_func( $tokenFunctions[$t], $user );
                                                if ( $val === false ) {
                                                        $this->setWarning( "Action '$t' is not allowed for the current user" );
                                                } else {
                                                        $data[$name][$t . 'token'] = $val;
                                                }
                                        }
                                }
                        }
                }

                $context = $this->getContext();
                // Second pass: add result data to $retval
                foreach ( $goodNames as $u ) {
                        if ( !isset( $data[$u] ) ) {
                                $data[$u] = array( 'name' => $u );
                                $urPage = new UserrightsPage;
                                $urPage->setContext( $context );
                                $iwUser = $urPage->fetchUser( $u );

                                if ( $iwUser instanceof UserRightsProxy ) {
                                        $data[$u]['interwiki'] = '';

                                        if ( !is_null( $params['token'] ) ) {
                                                $tokenFunctions = $this->getTokenFunctions();

                                                foreach ( $params['token'] as $t ) {
                                                        $val = call_user_func( $tokenFunctions[$t], $iwUser );
                                                        if ( $val === false ) {
                                                                $this->setWarning( "Action '$t' is not allowed for the current user" );
                                                        } else {
                                                                $data[$u][$t . 'token'] = $val;
                                                        }
                                                }
                                        }
                                } else {
                                        $data[$u]['missing'] = '';
                                }
                        } else {
                                if ( isset( $this->prop['groups'] ) && isset( $data[$u]['groups'] ) ) {
                                        $result->setIndexedTagName( $data[$u]['groups'], 'g' );
                                }
                                if ( isset( $this->prop['implicitgroups'] ) && isset( $data[$u]['implicitgroups'] ) ) {
                                        $result->setIndexedTagName( $data[$u]['implicitgroups'], 'g' );
                                }
                                if ( isset( $this->prop['rights'] ) && isset( $data[$u]['rights'] ) ) {
                                        $result->setIndexedTagName( $data[$u]['rights'], 'r' );
                                }
                        }

                        $fit = $result->addValue( array( 'query', $this->getModuleName() ),
                                null, $data[$u] );
                        if ( !$fit ) {
                                $this->setContinueEnumParameter( 'users',
                                        implode( '|', array_diff( $users, $done ) ) );
                                break;
                        }
                        $done[] = $u;
                }
                $result->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'user' );
        }

        /**
         * Gets all the groups that a user is automatically a member of (implicit groups)
         *
         * @deprecated since 1.20; call User::getAutomaticGroups() directly.
         * @param User $user
         * @return array
         */
        public static function getAutoGroups( $user ) {
                wfDeprecated( __METHOD__, '1.20' );

                return $user->getAutomaticGroups();
        }

        public function getCacheMode( $params ) {
                if ( isset( $params['token'] ) ) {
                        return 'private';
                } elseif ( array_diff( (array)$params['prop'], static::$publicProps ) ) {
                        return 'anon-public-user-private';
                } else {
                        return 'public';
                }
        }

        public function getAllowedParams() {
                return array(
                        'prop' => array(
                                ApiBase::PARAM_DFLT => null,
                                ApiBase::PARAM_ISMULTI => true,
                                ApiBase::PARAM_TYPE => array(
                                        'blockinfo',
                                        'groups',
                                        'implicitgroups',
                                        'rights',
                                        'editcount',
                                        'registration',
                                        'emailable',
                                        'gender',
                                )
                        ),
                        'users' => array(
                                ApiBase::PARAM_ISMULTI => true
                        ),
                        'token' => array(
                                ApiBase::PARAM_TYPE => array_keys( $this->getTokenFunctions() ),
                                ApiBase::PARAM_ISMULTI => true
                        ),
                );
        }

        public function getParamDescription() {
                return array(
                        'prop' => array(
                                'What pieces of information to include',
                                '  blockinfo      - Tags if the user is blocked, by whom, and for what reason',
                                '  groups         - Lists all the groups the user(s) belongs to',
                                '  implicitgroups - Lists all the groups a user is automatically a member of',
                                '  rights         - Lists all the rights the user(s) has',
                                '  editcount      - Adds the user\'s edit count',
                                '  registration   - Adds the user\'s registration timestamp',
                                '  emailable      - Tags if the user can and wants to receive ' .
                                        'email through [[Special:Emailuser]]',
                                '  gender         - Tags the gender of the user. Returns "male", "female", or "unknown"',
                        ),
                        'users' => 'A list of users to obtain the same information for',
                        'token' => 'Which tokens to obtain for each user',
                );
        }

        public function getResultProperties() {
                $props = array(
                        '' => array(
                                'userid' => array(
                                        ApiBase::PROP_TYPE => 'integer',
                                        ApiBase::PROP_NULLABLE => true
                                ),
                                'name' => 'string',
                                'invalid' => 'boolean',
                                'hidden' => 'boolean',
                                'interwiki' => 'boolean',
                                'missing' => 'boolean'
                        ),
                        'editcount' => array(
                                'editcount' => array(
                                        ApiBase::PROP_TYPE => 'integer',
                                        ApiBase::PROP_NULLABLE => true
                                )
                        ),
                        'registration' => array(
                                'registration' => array(
                                        ApiBase::PROP_TYPE => 'timestamp',
                                        ApiBase::PROP_NULLABLE => true
                                )
                        ),
                        'blockinfo' => array(
                                'blockid' => array(
                                        ApiBase::PROP_TYPE => 'integer',
                                        ApiBase::PROP_NULLABLE => true
                                ),
                                'blockedby' => array(
                                        ApiBase::PROP_TYPE => 'string',
                                        ApiBase::PROP_NULLABLE => true
                                ),
                                'blockedbyid' => array(
                                        ApiBase::PROP_TYPE => 'integer',
                                        ApiBase::PROP_NULLABLE => true
                                ),
                                'blockedreason' => array(
                                        ApiBase::PROP_TYPE => 'string',
                                        ApiBase::PROP_NULLABLE => true
                                ),
                                'blockedexpiry' => array(
                                        ApiBase::PROP_TYPE => 'timestamp',
                                        ApiBase::PROP_NULLABLE => true
                                )
                        ),
                        'emailable' => array(
                                'emailable' => 'boolean'
                        ),
                        'gender' => array(
                                'gender' => array(
                                        ApiBase::PROP_TYPE => array(
                                                'male',
                                                'female',
                                                'unknown'
                                        ),
                                        ApiBase::PROP_NULLABLE => true
                                )
                        )
                );

                self::addTokenProperties( $props, $this->getTokenFunctions() );

                return $props;
        }

        public function getDescription() {
                return 'Get information about a list of users.';
        }

        public function getExamples() {
                return 'api.php?action=query&list=users&ususers=brion|TimStarling&usprop=groups|editcount|gender';
        }

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