videojs-contrib-eme/es5/playready.js

Supports Encrypted Media Extensions for playback of encrypted content in Video.js

'use strict';

Object.defineProperty(exports, '__esModule', {
  value: true
});

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

var _videoJs = require('video.js');

var _videoJs2 = _interopRequireDefault(_videoJs);

var _globalWindow = require('global/window');

var _globalWindow2 = _interopRequireDefault(_globalWindow);

/**
 * Parses the EME key message XML to extract HTTP headers and the Challenge element to use
 * in the PlayReady license request.
 *
 * @param {ArrayBuffer} message key message from EME
 * @return {Object} an object containing headers and the message body to use in the
 * license request
 */
var getMessageContents = function getMessageContents(message) {
  var xml = new DOMParser().parseFromString(
  // TODO do we want to support UTF-8?
  String.fromCharCode.apply(null, new Uint16Array(message)), 'application/xml');
  var headersElement = xml.getElementsByTagName('HttpHeaders')[0];
  var headers = {};

  if (headersElement) {
    var headerNames = headersElement.getElementsByTagName('name');
    var headerValues = headersElement.getElementsByTagName('value');

    for (var i = 0; i < headerNames.length; i++) {
      headers[headerNames[i].childNodes[0].nodeValue] = headerValues[i].childNodes[0].nodeValue;
    }
  }

  var challengeElement = xml.getElementsByTagName('Challenge')[0];
  var challenge = undefined;

  if (challengeElement) {
    challenge = _globalWindow2['default'].atob(challengeElement.childNodes[0].nodeValue);
  }

  return {
    headers: headers,
    message: challenge
  };
};

exports.getMessageContents = getMessageContents;
var requestPlayreadyLicense = function requestPlayreadyLicense(url, messageBuffer, callback) {
  var _getMessageContents = getMessageContents(messageBuffer);

  var headers = _getMessageContents.headers;
  var message = _getMessageContents.message;

  _videoJs2['default'].xhr({
    uri: url,
    method: 'post',
    headers: headers,
    body: message,
    responseType: 'arraybuffer'
  }, callback);
};
exports.requestPlayreadyLicense = requestPlayreadyLicense;