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1/* Copyright 2013 The Chromium Authors. All rights reserved.
2 * Use of this source code is governed by a BSD-style license that can be
3 * found in the LICENSE file.
4 */
5
6/**
7 * @fileoverview
8 * The sandbox isn't allowed to make XHRs, so they have to be proxied to the
9 * main process. The XMLHttpRequestProxy class is API-compatible with the
10 * XMLHttpRequest class, but forwards the requests to the main process where
11 * they can be serviced. The forwarding of XHRs and responses is handled by
12 * the WcsSandboxContent class; this class is just a thin wrapper to hook XHR
13 * creations by JS running in the sandbox.
14 *
15 * Because XMLHttpRequest is implemented natively, and because the intent is
16 * to replace its functionality entirely, prototype linking is not a suitable
17 * approach here, so much of the interface definition is duplicated from the
18 * w3c specification: http://www.w3.org/TR/XMLHttpRequest
19 */
20
21'use strict';
22
23/** @suppress {duplicate} */
24var remoting = remoting || {};
25
26/**
27 * @constructor
28 * @extends {XMLHttpRequest}
29 */
30remoting.XMLHttpRequestProxy = function() {
31  /**
32   * @type {{headers: Object}}
33   */
34  this.sandbox_ipc = {
35    headers: {}
36  };
37  /**
38   * @type {number}
39   * @private
40   */
41  this.xhr_id_ = -1;
42};
43
44remoting.XMLHttpRequestProxy.prototype.open = function(
45    method, url, async, user, password) {
46  if (!async) {
47    console.warn('Synchronous XHRs are not supported.');
48  }
49  this.sandbox_ipc.method = method;
50  this.sandbox_ipc.url = url.toString();
51  this.sandbox_ipc.user = user;
52  this.sandbox_ipc.password = password;
53};
54
55remoting.XMLHttpRequestProxy.prototype.send = function(data) {
56  if (remoting.sandboxContent) {
57    this.sandbox_ipc.data = data;
58    this.xhr_id_ = remoting.sandboxContent.sendXhr(this);
59  }
60};
61
62remoting.XMLHttpRequestProxy.prototype.setRequestHeader = function(
63    header, value) {
64  this.sandbox_ipc.headers[header] = value;
65};
66
67remoting.XMLHttpRequestProxy.prototype.abort = function() {
68  if (this.xhr_id_ != -1) {
69    remoting.sandboxContent.abortXhr(this.xhr_id_);
70  }
71};
72
73remoting.XMLHttpRequestProxy.prototype.getResponseHeader = function(header) {
74  console.error('Sandbox: unproxied getResponseHeader(' + header + ') called.');
75};
76
77remoting.XMLHttpRequestProxy.prototype.getAllResponseHeaders = function() {
78  console.error('Sandbox: unproxied getAllResponseHeaders called.');
79};
80
81remoting.XMLHttpRequestProxy.prototype.overrideMimeType = function() {
82  console.error('Sandbox: unproxied overrideMimeType called.');
83};
84
85remoting.XMLHttpRequestProxy.prototype.UNSENT = 0;
86remoting.XMLHttpRequestProxy.prototype.OPENED = 1;
87remoting.XMLHttpRequestProxy.prototype.HEADERS_RECEIVED = 2;
88remoting.XMLHttpRequestProxy.prototype.LOADING = 3;
89remoting.XMLHttpRequestProxy.prototype.DONE = 4;
90