ApiQueryUsers.php

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<?php
use MediaWiki\Block\DatabaseBlock;

class ApiQueryUsers extends ApiQueryBase {
    use ApiQueryBlockInfoTrait;

    private $tokenFunctions, $prop;

    protected static $publicProps = [
        // everything except 'blockinfo' which might show hidden records if the user
        // making the request has the appropriate permissions
        'groups',
        'groupmemberships',
        'implicitgroups',
        'rights',
        'editcount',
        'registration',
        'emailable',
        'gender',
        'centralids',
        'cancreate',
    ];

    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 a mode that breaks the same-origin policy, no tokens can
        // be obtained
        if ( $this->lacksSameOriginSecurity() ) {
            return [];
        }

        $this->tokenFunctions = [
            'userrights' => [ self::class, 'getUserrightsToken' ],
        ];
        Hooks::run( 'APIQueryUsersTokens', [ &$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() {
        $db = $this->getDB();
        $commentStore = CommentStore::getStore();

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

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

        $users = (array)$params['users'];
        $userids = (array)$params['userids'];

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

        if ( $useNames ) {
            $parameters = &$goodNames;
        } else {
            $parameters = &$userids;
        }

        $result = $this->getResult();

        if ( count( $parameters ) ) {
            $userQuery = User::getQueryInfo();
            $this->addTables( $userQuery['tables'] );
            $this->addFields( $userQuery['fields'] );
            $this->addJoinConds( $userQuery['joins'] );
            if ( $useNames ) {
                $this->addWhereFld( 'user_name', $goodNames );
            } else {
                $this->addWhereFld( 'user_id', $userids );
            }

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

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

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

                $this->addTables( 'user' );
                if ( $useNames ) {
                    $this->addWhereFld( 'user_name', $goodNames );
                } else {
                    $this->addWhereFld( 'user_id', $userids );
                }

                $this->addTables( 'user_groups' );
                $this->addJoinConds( [ 'user_groups' => [ 'JOIN', 'ug_user=user_id' ] ] );
                $this->addFields( [ 'user_name' ] );
                $this->addFields( UserGroupMembership::selectFields() );
                $this->addWhere( 'ug_expiry IS NULL OR ug_expiry >= ' .
                    $db->addQuotes( $db->timestamp() ) );
                $userGroupsRes = $this->select( __METHOD__ );

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

            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] = [];
                    }
                    $user = User::newFromRow( $row, [ 'user_groups' => $userGroups[$row->user_name] ] );
                }
                if ( $useNames ) {
                    $key = $user->getName();
                } else {
                    $key = $user->getId();
                }
                $data[$key]['userid'] = $user->getId();
                $data[$key]['name'] = $user->getName();

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

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

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

                if ( isset( $this->prop['groupmemberships'] ) ) {
                    $data[$key]['groupmemberships'] = array_map( function ( $ugm ) {
                        return [
                            'group' => $ugm->getGroup(),
                            'expiry' => ApiResult::formatExpiry( $ugm->getExpiry() ),
                        ];
                    }, $user->getGroupMemberships() );
                }

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

                if ( isset( $this->prop['rights'] ) ) {
                    $data[$key]['rights'] = $this->getPermissionManager()
                        ->getUserPermissions( $user );
                }
                if ( $row->ipb_deleted ) {
                    $data[$key]['hidden'] = true;
                }
                if ( isset( $this->prop['blockinfo'] ) && !is_null( $row->ipb_by_text ) ) {
                    $data[$key] += $this->getBlockDetails( DatabaseBlock::newFromRow( $row ) );
                }

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

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

                if ( isset( $this->prop['centralids'] ) ) {
                    $data[$key] += ApiQueryUserInfo::getCentralUserInfo(
                        $this->getConfig(), $user, $params['attachedwiki']
                    );
                }

                if ( !is_null( $params['token'] ) ) {
                    $tokenFunctions = $this->getTokenFunctions();
                    foreach ( $params['token'] as $t ) {
                        $val = call_user_func( $tokenFunctions[$t], $user );
                        if ( $val === false ) {
                            $this->addWarning( [ 'apiwarn-tokennotallowed', $t ] );
                        } else {
                            $data[$key][$t . 'token'] = $val;
                        }
                    }
                }
            }
        }

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

                    $iwUser = $urPage->fetchUser( $u );

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

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

                            foreach ( $params['token'] as $t ) {
                                $val = call_user_func( $tokenFunctions[$t], $iwUser );
                                if ( $val === false ) {
                                    $this->addWarning( [ 'apiwarn-tokennotallowed', $t ] );
                                } else {
                                    $data[$u][$t . 'token'] = $val;
                                }
                            }
                        }
                    } else {
                        $data[$u]['missing'] = true;
                        if ( isset( $this->prop['cancreate'] ) ) {
                            $status = MediaWiki\Auth\AuthManager::singleton()->canCreateAccount( $u );
                            $data[$u]['cancreate'] = $status->isGood();
                            if ( !$status->isGood() ) {
                                $data[$u]['cancreateerror'] = $this->getErrorFormatter()->arrayFromStatus( $status );
                            }
                        }
                    }
                } else {
                    $data[$u] = [ 'userid' => $u, 'missing' => true ];
                }

            } else {
                if ( isset( $this->prop['groups'] ) && isset( $data[$u]['groups'] ) ) {
                    ApiResult::setArrayType( $data[$u]['groups'], 'array' );
                    ApiResult::setIndexedTagName( $data[$u]['groups'], 'g' );
                }
                if ( isset( $this->prop['groupmemberships'] ) && isset( $data[$u]['groupmemberships'] ) ) {
                    ApiResult::setArrayType( $data[$u]['groupmemberships'], 'array' );
                    ApiResult::setIndexedTagName( $data[$u]['groupmemberships'], 'groupmembership' );
                }
                if ( isset( $this->prop['implicitgroups'] ) && isset( $data[$u]['implicitgroups'] ) ) {
                    ApiResult::setArrayType( $data[$u]['implicitgroups'], 'array' );
                    ApiResult::setIndexedTagName( $data[$u]['implicitgroups'], 'g' );
                }
                if ( isset( $this->prop['rights'] ) && isset( $data[$u]['rights'] ) ) {
                    ApiResult::setArrayType( $data[$u]['rights'], 'array' );
                    ApiResult::setIndexedTagName( $data[$u]['rights'], 'r' );
                }
            }

            // @phan-suppress-next-line PhanTypeArraySuspiciousNullable
            $fit = $result->addValue( [ 'query', $this->getModuleName() ], null, $data[$u] );
            if ( !$fit ) {
                if ( $useNames ) {
                    $this->setContinueEnumParameter( 'users',
                        implode( '|', array_diff( $users, $done ) ) );
                } else {
                    $this->setContinueEnumParameter( 'userids',
                        implode( '|', array_diff( $userids, $done ) ) );
                }
                break;
            }
            $done[] = $u;
        }
        $result->addIndexedTagName( [ 'query', $this->getModuleName() ], 'user' );
    }

    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 [
            'prop' => [
                ApiBase::PARAM_ISMULTI => true,
                ApiBase::PARAM_TYPE => [
                    'blockinfo',
                    'groups',
                    'groupmemberships',
                    'implicitgroups',
                    'rights',
                    'editcount',
                    'registration',
                    'emailable',
                    'gender',
                    'centralids',
                    'cancreate',
                    // When adding a prop, consider whether it should be added
                    // to self::$publicProps
                ],
                ApiBase::PARAM_HELP_MSG_PER_VALUE => [],
            ],
            'attachedwiki' => null,
            'users' => [
                ApiBase::PARAM_ISMULTI => true
            ],
            'userids' => [
                ApiBase::PARAM_ISMULTI => true,
                ApiBase::PARAM_TYPE => 'integer'
            ],
            'token' => [
                ApiBase::PARAM_DEPRECATED => true,
                ApiBase::PARAM_TYPE => array_keys( $this->getTokenFunctions() ),
                ApiBase::PARAM_ISMULTI => true
            ],
        ];
    }

    protected function getExamplesMessages() {
        return [
            'action=query&list=users&ususers=Example&usprop=groups|editcount|gender'
                => 'apihelp-query+users-example-simple',
        ];
    }

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