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<?php /** * Just a sack of functions. Not actually an IXR_Server */ class Jetpack_XMLRPC_Server { /** * The current error object */ public $error = null; /** * The current user */ public $user = null; /** * Whitelist of the XML-RPC methods available to the Jetpack Server. If the * user is not authenticated (->login()) then the methods are never added, * so they will get a "does not exist" error. */ function xmlrpc_methods( $core_methods ) { $jetpack_methods = array( 'jetpack.jsonAPI' => array( $this, 'json_api' ), 'jetpack.verifyAction' => array( $this, 'verify_action' ), 'jetpack.remoteRegister' => array( $this, 'remote_register' ), 'jetpack.remoteProvision' => array( $this, 'remote_provision' ), ); $this->user = $this->login(); if ( $this->user ) { $jetpack_methods = array_merge( $jetpack_methods, array( 'jetpack.testConnection' => array( $this, 'test_connection' ), 'jetpack.testAPIUserCode' => array( $this, 'test_api_user_code' ), 'jetpack.featuresAvailable' => array( $this, 'features_available' ), 'jetpack.featuresEnabled' => array( $this, 'features_enabled' ), 'jetpack.disconnectBlog' => array( $this, 'disconnect_blog' ), 'jetpack.unlinkUser' => array( $this, 'unlink_user' ), 'jetpack.syncObject' => array( $this, 'sync_object' ), 'jetpack.idcUrlValidation' => array( $this, 'validate_urls_for_idc_mitigation' ), ) ); if ( isset( $core_methods['metaWeblog.editPost'] ) ) { $jetpack_methods['metaWeblog.newMediaObject'] = $core_methods['metaWeblog.newMediaObject']; $jetpack_methods['jetpack.updateAttachmentParent'] = array( $this, 'update_attachment_parent' ); } /** * Filters the XML-RPC methods available to Jetpack for authenticated users. * * @since 1.1.0 * * @param array $jetpack_methods XML-RPC methods available to the Jetpack Server. * @param array $core_methods Available core XML-RPC methods. * @param WP_User $user Information about a given WordPress user. */ $jetpack_methods = apply_filters( 'jetpack_xmlrpc_methods', $jetpack_methods, $core_methods, $this->user ); } /** * Filters the XML-RPC methods available to Jetpack for unauthenticated users. * * @since 3.0.0 * * @param array $jetpack_methods XML-RPC methods available to the Jetpack Server. * @param array $core_methods Available core XML-RPC methods. */ return apply_filters( 'jetpack_xmlrpc_unauthenticated_methods', $jetpack_methods, $core_methods ); } /** * Whitelist of the bootstrap XML-RPC methods */ function bootstrap_xmlrpc_methods() { return array( 'jetpack.verifyRegistration' => array( $this, 'verify_registration' ), 'jetpack.remoteAuthorize' => array( $this, 'remote_authorize' ), 'jetpack.remoteRegister' => array( $this, 'remote_register' ), ); } function authorize_xmlrpc_methods() { return array( 'jetpack.remoteAuthorize' => array( $this, 'remote_authorize' ), ); } function provision_xmlrpc_methods() { return array( 'jetpack.remoteRegister' => array( $this, 'remote_register' ), 'jetpack.remoteProvision' => array( $this, 'remote_provision' ), 'jetpack.remoteConnect' => array( $this, 'remote_connect' ), ); } function remote_authorize( $request ) { $user = get_user_by( 'id', $request['state'] ); JetpackTracking::record_user_event( 'jpc_remote_authorize_begin', array(), $user ); foreach( array( 'secret', 'state', 'redirect_uri', 'code' ) as $required ) { if ( ! isset( $request[ $required ] ) || empty( $request[ $required ] ) ) { return $this->error( new Jetpack_Error( 'missing_parameter', 'One or more parameters is missing from the request.', 400 ), 'jpc_remote_authorize_fail' ); } } if ( ! $user ) { return $this->error( new Jetpack_Error( 'user_unknown', 'User not found.', 404 ), 'jpc_remote_authorize_fail' ); } if ( Jetpack::is_active() && Jetpack::is_user_connected( $request['state'] ) ) { return $this->error( new Jetpack_Error( 'already_connected', 'User already connected.', 400 ), 'jpc_remote_authorize_fail' ); } $verified = $this->verify_action( array( 'authorize', $request['secret'], $request['state'] ) ); if ( is_a( $verified, 'IXR_Error' ) ) { return $this->error( $verified, 'jpc_remote_authorize_fail' ); } wp_set_current_user( $request['state'] ); $client_server = new Jetpack_Client_Server; $result = $client_server->authorize( $request ); if ( is_wp_error( $result ) ) { return $this->error( $result, 'jpc_remote_authorize_fail' ); } JetpackTracking::record_user_event( 'jpc_remote_authorize_success' ); return array( 'result' => $result, ); } /** * This XML-RPC method is called from the /jpphp/provision endpoint on WPCOM in order to * register this site so that a plan can be provisioned. * * @param array $request An array containing at minimum nonce and local_user keys. * * @return WP_Error|array */ public function remote_register( $request ) { JetpackTracking::record_user_event( 'jpc_remote_register_begin', array() ); $user = $this->fetch_and_verify_local_user( $request ); if ( ! $user ) { return $this->error( new WP_Error( 'input_error', __( 'Valid user is required', 'jetpack' ), 400 ), 'jpc_remote_register_fail' ); } if ( is_wp_error( $user ) || is_a( $user, 'IXR_Error' ) ) { return $this->error( $user, 'jpc_remote_register_fail' ); } if ( empty( $request['nonce'] ) ) { return $this->error( new Jetpack_Error( 'nonce_missing', __( 'The required "nonce" parameter is missing.', 'jetpack' ), 400 ), 'jpc_remote_register_fail' ); } $nonce = sanitize_text_field( $request['nonce'] ); unset( $request['nonce'] ); $api_url = Jetpack::fix_url_for_bad_hosts( Jetpack::api_url( 'partner_provision_nonce_check' ) ); $response = Jetpack_Client::_wp_remote_request( esc_url_raw( add_query_arg( 'nonce', $nonce, $api_url ) ), array( 'method' => 'GET' ), true ); if ( 200 !== wp_remote_retrieve_response_code( $response ) || 'OK' !== trim( wp_remote_retrieve_body( $response ) ) ) { return $this->error( new Jetpack_Error( 'invalid_nonce', __( 'There was an issue validating this request.', 'jetpack' ), 400 ), 'jpc_remote_register_fail' ); } if ( ! Jetpack_Options::get_option( 'id' ) || ! Jetpack_Options::get_option( 'blog_token' ) || ! empty( $request['force'] ) ) { wp_set_current_user( $user->ID ); // This code mostly copied from Jetpack::admin_page_load. Jetpack::maybe_set_version_option(); $registered = Jetpack::try_registration(); if ( is_wp_error( $registered ) ) { return $this->error( $registered, 'jpc_remote_register_fail' ); } elseif ( ! $registered ) { return $this->error( new Jetpack_Error( 'registration_error', __( 'There was an unspecified error registering the site', 'jetpack' ), 400 ), 'jpc_remote_register_fail' ); } } JetpackTracking::record_user_event( 'jpc_remote_register_success' ); return array( 'client_id' => Jetpack_Options::get_option( 'id' ) ); } /** * This XML-RPC method is called from the /jpphp/provision endpoint on WPCOM in order to * register this site so that a plan can be provisioned. * * @param array $request An array containing at minimum a nonce key and a local_username key. * * @return WP_Error|array */ public function remote_provision( $request ) { $user = $this->fetch_and_verify_local_user( $request ); if ( ! $user ) { return $this->error( new WP_Error( 'input_error', __( 'Valid user is required', 'jetpack' ), 400 ), 'jpc_remote_provision_fail' ); } if ( is_wp_error( $user ) || is_a( $user, 'IXR_Error' ) ) { return $this->error( $user, 'jpc_remote_provision_fail' ); } $site_icon = get_site_icon_url(); $auto_enable_sso = ( ! Jetpack::is_active() || Jetpack::is_module_active( 'sso' ) ); /** This filter is documented in class.jetpack-cli.php */ if ( apply_filters( 'jetpack_start_enable_sso', $auto_enable_sso ) ) { $redirect_uri = add_query_arg( array( 'action' => 'jetpack-sso', 'redirect_to' => rawurlencode( admin_url() ), ), wp_login_url() // TODO: come back to Jetpack dashboard? ); } else { $redirect_uri = admin_url(); } // Generate secrets. $role = Jetpack::translate_user_to_role( $user ); $secrets = Jetpack::init()->generate_secrets( 'authorize', $user->ID ); $response = array( 'jp_version' => JETPACK__VERSION, 'redirect_uri' => $redirect_uri, 'user_id' => $user->ID, 'user_email' => $user->user_email, 'user_login' => $user->user_login, 'scope' => Jetpack::sign_role( $role, $user->ID ), 'secret' => $secrets['secret_1'], 'is_active' => Jetpack::is_active(), ); if ( $site_icon ) { $response['site_icon'] = $site_icon; } if ( ! empty( $request['onboarding'] ) ) { Jetpack::create_onboarding_token(); $response['onboarding_token'] = Jetpack_Options::get_option( 'onboarding' ); } return $response; } /** * Given an array containing a local user identifier and a nonce, will attempt to fetch and set * an access token for the given user. * * @param array $request An array containing local_user and nonce keys at minimum. * @return mixed */ public function remote_connect( $request, $ixr_client = false ) { if ( Jetpack::is_active() ) { return $this->error( new WP_Error( 'already_connected', __( 'Jetpack is already connected.', 'jetpack' ), 400 ), 'jpc_remote_connect_fail' ); } $user = $this->fetch_and_verify_local_user( $request ); if ( ! $user || is_wp_error( $user ) || is_a( $user, 'IXR_Error' ) ) { return $this->error( new WP_Error( 'input_error', __( 'Valid user is required.', 'jetpack' ), 400 ), 'jpc_remote_connect_fail' ); } if ( empty( $request['nonce'] ) ) { return $this->error( new WP_Error( 'input_error', __( 'A non-empty nonce must be supplied.', 'jetpack' ), 400 ), 'jpc_remote_connect_fail' ); } if ( ! $ixr_client ) { Jetpack::load_xml_rpc_client(); $ixr_client = new Jetpack_IXR_Client(); } $ixr_client->query( 'jetpack.getUserAccessToken', array( 'nonce' => sanitize_text_field( $request['nonce'] ), 'external_user_id' => $user->ID, ) ); $token = $ixr_client->isError() ? false : $ixr_client->getResponse(); if ( empty( $token ) ) { return $this->error( new WP_Error( 'token_fetch_failed', __( 'Failed to fetch user token from WordPress.com.', 'jetpack' ), 400 ), 'jpc_remote_connect_fail' ); } $token = sanitize_text_field( $token ); Jetpack::update_user_token( $user->ID, sprintf( '%s.%d', $token, $user->ID ), true ); $this->do_post_authorization(); return Jetpack::is_active(); } private function fetch_and_verify_local_user( $request ) { if ( empty( $request['local_user'] ) ) { return $this->error( new Jetpack_Error( 'local_user_missing', __( 'The required "local_user" parameter is missing.', 'jetpack' ), 400 ), 'jpc_remote_provision_fail' ); } // local user is used to look up by login, email or ID $local_user_info = $request['local_user']; $user = get_user_by( 'login', $local_user_info ); if ( ! $user ) { $user = get_user_by( 'email', $local_user_info ); } if ( ! $user ) { $user = get_user_by( 'ID', $local_user_info ); } return $user; } private function tracks_record_error( $name, $error, $user = null ) { if ( is_wp_error( $error ) ) { JetpackTracking::record_user_event( $name, array( 'error_code' => $error->get_error_code(), 'error_message' => $error->get_error_message() ), $user ); } elseif( is_a( $error, 'IXR_Error' ) ) { JetpackTracking::record_user_event( $name, array( 'error_code' => $error->code, 'error_message' => $error->message ), $user ); } return $error; } /** * Verifies that Jetpack.WordPress.com received a registration request from this site */ function verify_registration( $data ) { // failure modes will be recorded in tracks in the verify_action method return $this->verify_action( array( 'register', $data[0], $data[1] ) ); } /** * @return WP_Error|string secret_2 on success, WP_Error( error_code => error_code, error_message => error description, error_data => status code ) on failure * * Possible error_codes: * * verify_secret_1_missing * verify_secret_1_malformed * verify_secrets_missing: verification secrets are not found in database * verify_secrets_incomplete: verification secrets are only partially found in database * verify_secrets_expired: verification secrets have expired * verify_secrets_mismatch: stored secret_1 does not match secret_1 sent by Jetpack.WordPress.com * state_missing: required parameter of state not found * state_malformed: state is not a digit * invalid_state: state in request does not match the stored state * * The 'authorize' and 'register' actions have additional error codes * * state_missing: a state ( user id ) was not supplied * state_malformed: state is not the correct data type * invalid_state: supplied state does not match the stored state */ function verify_action( $params ) { $action = $params[0]; $verify_secret = $params[1]; $state = isset( $params[2] ) ? $params[2] : ''; $user = get_user_by( 'id', $state ); JetpackTracking::record_user_event( 'jpc_verify_' . $action . '_begin', array(), $user ); $tracks_failure_event_name = 'jpc_verify_' . $action . '_fail'; if ( empty( $verify_secret ) ) { return $this->error( new Jetpack_Error( 'verify_secret_1_missing', sprintf( 'The required "%s" parameter is missing.', 'secret_1' ), 400 ), $tracks_failure_event_name, $user ); } else if ( ! is_string( $verify_secret ) ) { return $this->error( new Jetpack_Error( 'verify_secret_1_malformed', sprintf( 'The required "%s" parameter is malformed.', 'secret_1' ), 400 ), $tracks_failure_event_name, $user ); } else if ( empty( $state ) ) { return $this->error( new Jetpack_Error( 'state_missing', sprintf( 'The required "%s" parameter is missing.', 'state' ), 400 ), $tracks_failure_event_name, $user ); } else if ( ! ctype_digit( $state ) ) { return $this->error( new Jetpack_Error( 'state_malformed', sprintf( 'The required "%s" parameter is malformed.', 'state' ), 400 ), $tracks_failure_event_name, $user ); } $secrets = Jetpack::get_secrets( $action, $state ); if ( ! $secrets ) { Jetpack::delete_secrets( $action, $state ); return $this->error( new Jetpack_Error( 'verify_secrets_missing', 'Verification secrets not found', 400 ), $tracks_failure_event_name, $user ); } if ( is_wp_error( $secrets ) ) { Jetpack::delete_secrets( $action, $state ); return $this->error( new Jetpack_Error( $secrets->get_error_code(), $secrets->get_error_message(), 400 ), $tracks_failure_event_name, $user ); } if ( empty( $secrets['secret_1'] ) || empty( $secrets['secret_2'] ) || empty( $secrets['exp'] ) ) { Jetpack::delete_secrets( $action, $state ); return $this->error( new Jetpack_Error( 'verify_secrets_incomplete', 'Verification secrets are incomplete', 400 ), $tracks_failure_event_name, $user ); } if ( ! hash_equals( $verify_secret, $secrets['secret_1'] ) ) { Jetpack::delete_secrets( $action, $state ); return $this->error( new Jetpack_Error( 'verify_secrets_mismatch', 'Secret mismatch', 400 ), $tracks_failure_event_name, $user ); } Jetpack::delete_secrets( $action, $state ); JetpackTracking::record_user_event( 'jpc_verify_' . $action . '_success', array(), $user ); return $secrets['secret_2']; } /** * Wrapper for wp_authenticate( $username, $password ); * * @return WP_User|bool */ function login() { Jetpack::init()->require_jetpack_authentication(); $user = wp_authenticate( 'username', 'password' ); if ( is_wp_error( $user ) ) { if ( 'authentication_failed' == $user->get_error_code() ) { // Generic error could mean most anything. $this->error = new Jetpack_Error( 'invalid_request', 'Invalid Request', 403 ); } else { $this->error = $user; } return false; } else if ( !$user ) { // Shouldn't happen. $this->error = new Jetpack_Error( 'invalid_request', 'Invalid Request', 403 ); return false; } return $user; } /** * Returns the current error as an IXR_Error * * @return bool|IXR_Error */ function error( $error = null, $tracks_event_name = null, $user = null ) { // record using Tracks if ( null !== $tracks_event_name ) { $this->tracks_record_error( $tracks_event_name, $error, $user ); } if ( !is_null( $error ) ) { $this->error = $error; } if ( is_wp_error( $this->error ) ) { $code = $this->error->get_error_data(); if ( !$code ) { $code = -10520; } $message = sprintf( 'Jetpack: [%s] %s', $this->error->get_error_code(), $this->error->get_error_message() ); return new IXR_Error( $code, $message ); } else if ( is_a( $this->error, 'IXR_Error' ) ) { return $this->error; } return false; } /* API Methods */ /** * Just authenticates with the given Jetpack credentials. * * @return string The current Jetpack version number */ function test_connection() { return JETPACK__VERSION; } function test_api_user_code( $args ) { $client_id = (int) $args[0]; $user_id = (int) $args[1]; $nonce = (string) $args[2]; $verify = (string) $args[3]; if ( !$client_id || !$user_id || !strlen( $nonce ) || 32 !== strlen( $verify ) ) { return false; } $user = get_user_by( 'id', $user_id ); if ( !$user || is_wp_error( $user ) ) { return false; } /* debugging error_log( "CLIENT: $client_id" ); error_log( "USER: $user_id" ); error_log( "NONCE: $nonce" ); error_log( "VERIFY: $verify" ); */ $jetpack_token = Jetpack_Data::get_access_token( $user_id ); $api_user_code = get_user_meta( $user_id, "jetpack_json_api_$client_id", true ); if ( !$api_user_code ) { return false; } $hmac = hash_hmac( 'md5', json_encode( (object) array( 'client_id' => (int) $client_id, 'user_id' => (int) $user_id, 'nonce' => (string) $nonce, 'code' => (string) $api_user_code, ) ), $jetpack_token->secret ); if ( ! hash_equals( $hmac, $verify ) ) { return false; } return $user_id; } /** * Disconnect this blog from the connected wordpress.com account * @return boolean */ function disconnect_blog() { // For tracking if ( ! empty( $this->user->ID ) ) { wp_set_current_user( $this->user->ID ); } Jetpack::log( 'disconnect' ); Jetpack::disconnect(); return true; } /** * Unlink a user from WordPress.com * * This will fail if called by the Master User. */ function unlink_user() { Jetpack::log( 'unlink' ); return Jetpack::unlink_user(); } /** * Returns any object that is able to be synced */ function sync_object( $args ) { // e.g. posts, post, 5 list( $module_name, $object_type, $id ) = $args; require_once dirname( __FILE__ ) . '/sync/class.jetpack-sync-modules.php'; require_once dirname( __FILE__ ) . '/sync/class.jetpack-sync-sender.php'; $sync_module = Jetpack_Sync_Modules::get_module( $module_name ); $codec = Jetpack_Sync_Sender::get_instance()->get_codec(); return $codec->encode( $sync_module->get_object_by_id( $object_type, $id ) ); } /** * Returns the home URL and site URL for the current site which can be used on the WPCOM side for * IDC mitigation to decide whether sync should be allowed if the home and siteurl values differ between WPCOM * and the remote Jetpack site. * * @return array */ function validate_urls_for_idc_mitigation() { require_once JETPACK__PLUGIN_DIR . 'sync/class.jetpack-sync-functions.php'; return array( 'home' => Jetpack_Sync_Functions::home_url(), 'siteurl' => Jetpack_Sync_Functions::site_url(), ); } /** * Returns what features are available. Uses the slug of the module files. * * @return array */ function features_available() { $raw_modules = Jetpack::get_available_modules(); $modules = array(); foreach ( $raw_modules as $module ) { $modules[] = Jetpack::get_module_slug( $module ); } return $modules; } /** * Returns what features are enabled. Uses the slug of the modules files. * * @return array */ function features_enabled() { $raw_modules = Jetpack::get_active_modules(); $modules = array(); foreach ( $raw_modules as $module ) { $modules[] = Jetpack::get_module_slug( $module ); } return $modules; } function update_attachment_parent( $args ) { $attachment_id = (int) $args[0]; $parent_id = (int) $args[1]; return wp_update_post( array( 'ID' => $attachment_id, 'post_parent' => $parent_id, ) ); } function json_api( $args = array() ) { $json_api_args = $args[0]; $verify_api_user_args = $args[1]; $method = (string) $json_api_args[0]; $url = (string) $json_api_args[1]; $post_body = is_null( $json_api_args[2] ) ? null : (string) $json_api_args[2]; $user_details = (array) $json_api_args[4]; $locale = (string) $json_api_args[5]; if ( !$verify_api_user_args ) { $user_id = 0; } elseif ( 'internal' === $verify_api_user_args[0] ) { $user_id = (int) $verify_api_user_args[1]; if ( $user_id ) { $user = get_user_by( 'id', $user_id ); if ( !$user || is_wp_error( $user ) ) { return false; } } } else { $user_id = call_user_func( array( $this, 'test_api_user_code' ), $verify_api_user_args ); if ( !$user_id ) { return false; } } /* debugging error_log( "-- begin json api via jetpack debugging -- " ); error_log( "METHOD: $method" ); error_log( "URL: $url" ); error_log( "POST BODY: $post_body" ); error_log( "VERIFY_ARGS: " . print_r( $verify_api_user_args, 1 ) ); error_log( "VERIFIED USER_ID: " . (int) $user_id ); error_log( "-- end json api via jetpack debugging -- " ); */ if ( 'en' !== $locale ) { // .org mo files are named slightly different from .com, and all we have is this the locale -- try to guess them. $new_locale = $locale; if ( strpos( $locale, '-' ) !== false ) { $locale_pieces = explode( '-', $locale ); $new_locale = $locale_pieces[0]; $new_locale .= ( ! empty( $locale_pieces[1] ) ) ? '_' . strtoupper( $locale_pieces[1] ) : ''; } else { // .com might pass 'fr' because thats what our language files are named as, where core seems // to do fr_FR - so try that if we don't think we can load the file. if ( ! file_exists( WP_LANG_DIR . '/' . $locale . '.mo' ) ) { $new_locale = $locale . '_' . strtoupper( $locale ); } } if ( file_exists( WP_LANG_DIR . '/' . $new_locale . '.mo' ) ) { unload_textdomain( 'default' ); load_textdomain( 'default', WP_LANG_DIR . '/' . $new_locale . '.mo' ); } } $old_user = wp_get_current_user(); wp_set_current_user( $user_id ); $token = Jetpack_Data::get_access_token( get_current_user_id() ); if ( !$token || is_wp_error( $token ) ) { return false; } define( 'REST_API_REQUEST', true ); define( 'WPCOM_JSON_API__BASE', 'public-api.wordpress.com/rest/v1' ); // needed? require_once ABSPATH . 'wp-admin/includes/admin.php'; require_once JETPACK__PLUGIN_DIR . 'class.json-api.php'; $api = WPCOM_JSON_API::init( $method, $url, $post_body ); $api->token_details['user'] = $user_details; require_once JETPACK__PLUGIN_DIR . 'class.json-api-endpoints.php'; $display_errors = ini_set( 'display_errors', 0 ); ob_start(); $content_type = $api->serve( false ); $output = ob_get_clean(); ini_set( 'display_errors', $display_errors ); $nonce = wp_generate_password( 10, false ); $hmac = hash_hmac( 'md5', $nonce . $output, $token->secret ); wp_set_current_user( isset( $old_user->ID ) ? $old_user->ID : 0 ); return array( (string) $output, (string) $nonce, (string) $hmac, ); } /** * Handles authorization actions after connecting a site, such as enabling modules. * * This do_post_authorization() is used in this class, as opposed to calling * Jetpack::handle_post_authorization_actions() directly so that we can mock this method as necessary. * * @return void */ public function do_post_authorization() { /** This filter is documented in class.jetpack-cli.php */ $enable_sso = apply_filters( 'jetpack_start_enable_sso', true ); Jetpack::handle_post_authorization_actions( $enable_sso, false, false ); } }