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#include "remoting/host/setup/oauth_client.h"
6
7namespace {
8const int kMaxGaiaRetries = 3;
9}  // namespace
10
11namespace remoting {
12
13OAuthClient::OAuthClient(
14    scoped_refptr<net::URLRequestContextGetter> url_request_context_getter)
15    : gaia_oauth_client_(url_request_context_getter) {
16}
17
18OAuthClient::~OAuthClient() {
19}
20
21void OAuthClient::GetCredentialsFromAuthCode(
22    const gaia::OAuthClientInfo& oauth_client_info,
23    const std::string& auth_code,
24    CompletionCallback on_done) {
25
26  if (!on_done_.is_null()) {
27    pending_requests_.push(Request(oauth_client_info, auth_code, on_done));
28    return;
29  }
30
31  on_done_ = on_done;
32  // Map the authorization code to refresh and access tokens.
33  gaia_oauth_client_.GetTokensFromAuthCode(oauth_client_info, auth_code,
34                                           kMaxGaiaRetries, this);
35}
36
37void OAuthClient::OnGetTokensResponse(
38    const std::string& refresh_token,
39    const std::string& access_token,
40    int expires_in_seconds) {
41  refresh_token_ = refresh_token;
42  // Get the email corresponding to the access token.
43  gaia_oauth_client_.GetUserEmail(access_token, kMaxGaiaRetries, this);
44}
45
46void OAuthClient::OnRefreshTokenResponse(
47    const std::string& access_token,
48    int expires_in_seconds) {
49  // We never request a refresh token, so this call is not expected.
50  NOTREACHED();
51}
52
53void OAuthClient::SendResponse(const std::string& user_email,
54                               const std::string& refresh_token) {
55  CompletionCallback on_done = on_done_;
56  on_done_.Reset();
57  on_done.Run(user_email, refresh_token);
58
59  // Process the next request in the queue.
60  if (pending_requests_.size()) {
61    Request request = pending_requests_.front();
62    pending_requests_.pop();
63    // GetCredentialsFromAuthCode is asynchronous, so it's safe to call it here.
64    GetCredentialsFromAuthCode(
65        request.oauth_client_info, request.auth_code, request.on_done);
66  }
67}
68
69void OAuthClient::OnGetUserEmailResponse(const std::string& user_email) {
70  SendResponse(user_email, refresh_token_);
71}
72
73void OAuthClient::OnOAuthError() {
74  SendResponse("", "");
75}
76
77void OAuthClient::OnNetworkError(int response_code) {
78  SendResponse("", "");
79}
80
81OAuthClient::Request::Request(
82    const gaia::OAuthClientInfo& oauth_client_info,
83    const std::string& auth_code,
84    CompletionCallback on_done) {
85  this->oauth_client_info = oauth_client_info;
86  this->auth_code = auth_code;
87  this->on_done = on_done;
88}
89
90OAuthClient::Request::~Request() {
91}
92
93}  // namespace remoting
94