penpal/es5/child/handleSynAckMessageFactory.js

A promise-based library for communicating with iframes via postMessage.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _enums = require("../enums");

var _connectCallReceiver = _interopRequireDefault(require("../connectCallReceiver"));

var _connectCallSender = _interopRequireDefault(require("../connectCallSender"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/**
 * Handles a SYN-ACK handshake message.
 */
var _default = (parentOrigin, serializedMethods, destructor, log) => {
  const {
    destroy,
    onDestroy
  } = destructor;
  return event => {
    let originQualifies = parentOrigin instanceof RegExp ? parentOrigin.test(event.origin) : parentOrigin === '*' || parentOrigin === event.origin;

    if (!originQualifies) {
      log("Child: Handshake - Received SYN-ACK from origin ".concat(event.origin, " which did not match expected origin ").concat(parentOrigin));
      return;
    }

    log('Child: Handshake - Received SYN-ACK, responding with ACK'); // If event.origin is "null", the remote protocol is file: or data: and we
    // must post messages with "*" as targetOrigin when sending messages.
    // https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage#Using_window.postMessage_in_extensions

    const originForSending = event.origin === 'null' ? '*' : event.origin;
    const ackMessage = {
      penpal: _enums.MessageType.Ack,
      methodNames: Object.keys(serializedMethods)
    };
    window.parent.postMessage(ackMessage, originForSending);
    const info = {
      localName: 'Child',
      local: window,
      remote: window.parent,
      originForSending,
      originForReceiving: event.origin
    };
    const destroyCallReceiver = (0, _connectCallReceiver.default)(info, serializedMethods, log);
    onDestroy(destroyCallReceiver);
    const callSender = {};
    const destroyCallSender = (0, _connectCallSender.default)(callSender, info, event.data.methodNames, destroy, log);
    onDestroy(destroyCallSender);
    return callSender;
  };
};

exports.default = _default;