nassh/js/nassh_google_relay_html.js

// Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

'use strict';

// This file handles the onload event for google_relay.html.  It would have
// been included inline in the html file if Content Security Policy (CSP) didn't
// forbid it.

window.onload = function() {
  var hash = document.location.hash.substr(1);

  if (hash.indexOf('@') != -1) {
    // URLs containing '@' are legacy v1 redirects.
    var ary = hash.match(/@([^:]+)(?::(\d+))?/);
    sessionStorage.setItem('googleRelay.relayHost', ary[1]);
    sessionStorage.setItem('googleRelay.relayPort', ary[2] || '');
  } else {
    // URLs not containing '@' are assumed to be v2 URL safe Base64 JSON blobs.
    var blob = atob(hash.replace(/\+/g, '-').replace(/\//g, '_'));
    var params = JSON.parse(blob);
    if (params['endpoint']) {
      var [host, port] = params['endpoint'].split(':');
      sessionStorage.setItem('googleRelay.relayHost', host);
      sessionStorage.setItem('googleRelay.relayPort', port || '');
    }
  }

  var path = sessionStorage.getItem('googleRelay.resumePath');
  if (!path) {
    console.error('Nowhere to resume to!');
    return;
  }

  var url = chrome.extension.getURL(path);
  console.log(url);
  document.location = url;
};