ApiQueryUsers.php

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<?php
class ApiQueryUsers extends ApiQueryBase {

    private $tokenFunctions, $prop;

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

    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;
    }

    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]['blockedtimestamp'] = wfTimestamp( TS_ISO_8601, $row->ipb_timestamp );
                    $data[$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' );
    }

    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_DEPRECATED => true,
                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 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';
    }
}