Torne (Richard Coles) | 5d1f7b1 | 2014-02-21 12:16:55 +0000 | [diff] [blame] | 1 | // Copyright 2014 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/oauth_token_getter.h" |
| 6 | |
| 7 | #include "base/bind.h" |
| 8 | #include "base/callback.h" |
| 9 | #include "base/strings/string_util.h" |
| 10 | #include "google_apis/google_api_keys.h" |
| 11 | #include "net/url_request/url_request_context_getter.h" |
| 12 | #include "remoting/base/logging.h" |
| 13 | |
| 14 | namespace remoting { |
| 15 | |
| 16 | namespace { |
| 17 | |
| 18 | // Maximum number of retries on network/500 errors. |
| 19 | const int kMaxRetries = 3; |
| 20 | |
| 21 | // Time when we we try to update OAuth token before its expiration. |
| 22 | const int kTokenUpdateTimeBeforeExpirySeconds = 60; |
| 23 | |
| 24 | } // namespace |
| 25 | |
| 26 | OAuthTokenGetter::OAuthCredentials::OAuthCredentials( |
| 27 | const std::string& login, |
| 28 | const std::string& refresh_token, |
| 29 | bool is_service_account) |
| 30 | : login(login), |
| 31 | refresh_token(refresh_token), |
| 32 | is_service_account(is_service_account) { |
| 33 | } |
| 34 | |
| 35 | OAuthTokenGetter::OAuthTokenGetter( |
| 36 | scoped_ptr<OAuthCredentials> oauth_credentials, |
Torne (Richard Coles) | cedac22 | 2014-06-03 10:58:34 +0100 | [diff] [blame] | 37 | scoped_refptr<net::URLRequestContextGetter> url_request_context_getter, |
| 38 | bool auto_refresh) |
Torne (Richard Coles) | 5d1f7b1 | 2014-02-21 12:16:55 +0000 | [diff] [blame] | 39 | : oauth_credentials_(oauth_credentials.Pass()), |
| 40 | gaia_oauth_client_( |
Primiano Tucci | 1320f92 | 2014-09-30 14:45:55 +0100 | [diff] [blame^] | 41 | new gaia::GaiaOAuthClient(url_request_context_getter.get())), |
Torne (Richard Coles) | 5d1f7b1 | 2014-02-21 12:16:55 +0000 | [diff] [blame] | 42 | url_request_context_getter_(url_request_context_getter), |
| 43 | refreshing_oauth_token_(false) { |
Torne (Richard Coles) | cedac22 | 2014-06-03 10:58:34 +0100 | [diff] [blame] | 44 | if (auto_refresh) { |
| 45 | refresh_timer_.reset(new base::OneShotTimer<OAuthTokenGetter>()); |
| 46 | } |
Torne (Richard Coles) | 5d1f7b1 | 2014-02-21 12:16:55 +0000 | [diff] [blame] | 47 | } |
| 48 | |
| 49 | OAuthTokenGetter::~OAuthTokenGetter() {} |
| 50 | |
| 51 | void OAuthTokenGetter::OnGetTokensResponse(const std::string& user_email, |
| 52 | const std::string& access_token, |
| 53 | int expires_seconds) { |
| 54 | NOTREACHED(); |
| 55 | } |
| 56 | |
| 57 | void OAuthTokenGetter::OnRefreshTokenResponse( |
| 58 | const std::string& access_token, |
| 59 | int expires_seconds) { |
| 60 | DCHECK(CalledOnValidThread()); |
| 61 | DCHECK(oauth_credentials_.get()); |
| 62 | HOST_LOG << "Received OAuth token."; |
| 63 | |
| 64 | oauth_access_token_ = access_token; |
Torne (Richard Coles) | cedac22 | 2014-06-03 10:58:34 +0100 | [diff] [blame] | 65 | base::TimeDelta token_expiration = |
Torne (Richard Coles) | 5d1f7b1 | 2014-02-21 12:16:55 +0000 | [diff] [blame] | 66 | base::TimeDelta::FromSeconds(expires_seconds) - |
| 67 | base::TimeDelta::FromSeconds(kTokenUpdateTimeBeforeExpirySeconds); |
Torne (Richard Coles) | cedac22 | 2014-06-03 10:58:34 +0100 | [diff] [blame] | 68 | auth_token_expiry_time_ = base::Time::Now() + token_expiration; |
Torne (Richard Coles) | 5d1f7b1 | 2014-02-21 12:16:55 +0000 | [diff] [blame] | 69 | |
Torne (Richard Coles) | cedac22 | 2014-06-03 10:58:34 +0100 | [diff] [blame] | 70 | if (refresh_timer_) { |
| 71 | refresh_timer_->Stop(); |
| 72 | refresh_timer_->Start(FROM_HERE, token_expiration, this, |
| 73 | &OAuthTokenGetter::RefreshOAuthToken); |
| 74 | } |
| 75 | |
| 76 | if (verified_email_.empty()) { |
| 77 | gaia_oauth_client_->GetUserEmail(access_token, kMaxRetries, this); |
| 78 | } else { |
| 79 | refreshing_oauth_token_ = false; |
| 80 | NotifyCallbacks( |
| 81 | OAuthTokenGetter::SUCCESS, verified_email_, oauth_access_token_); |
| 82 | } |
Torne (Richard Coles) | 5d1f7b1 | 2014-02-21 12:16:55 +0000 | [diff] [blame] | 83 | } |
| 84 | |
| 85 | void OAuthTokenGetter::OnGetUserEmailResponse(const std::string& user_email) { |
| 86 | DCHECK(CalledOnValidThread()); |
| 87 | DCHECK(oauth_credentials_.get()); |
| 88 | HOST_LOG << "Received user info."; |
| 89 | |
| 90 | if (user_email != oauth_credentials_->login) { |
| 91 | LOG(ERROR) << "OAuth token and email address do not refer to " |
| 92 | "the same account."; |
| 93 | OnOAuthError(); |
| 94 | return; |
| 95 | } |
| 96 | |
Torne (Richard Coles) | cedac22 | 2014-06-03 10:58:34 +0100 | [diff] [blame] | 97 | verified_email_ = user_email; |
Torne (Richard Coles) | 5d1f7b1 | 2014-02-21 12:16:55 +0000 | [diff] [blame] | 98 | refreshing_oauth_token_ = false; |
| 99 | |
| 100 | // Now that we've refreshed the token and verified that it's for the correct |
| 101 | // user account, try to connect using the new token. |
| 102 | NotifyCallbacks(OAuthTokenGetter::SUCCESS, user_email, oauth_access_token_); |
| 103 | } |
| 104 | |
| 105 | void OAuthTokenGetter::NotifyCallbacks(Status status, |
| 106 | const std::string& user_email, |
| 107 | const std::string& access_token) { |
| 108 | std::queue<TokenCallback> callbacks(pending_callbacks_); |
| 109 | pending_callbacks_ = std::queue<TokenCallback>(); |
| 110 | |
| 111 | while (!callbacks.empty()) { |
| 112 | callbacks.front().Run(status, user_email, access_token); |
| 113 | callbacks.pop(); |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | void OAuthTokenGetter::OnOAuthError() { |
| 118 | DCHECK(CalledOnValidThread()); |
| 119 | LOG(ERROR) << "OAuth: invalid credentials."; |
| 120 | refreshing_oauth_token_ = false; |
Torne (Richard Coles) | cedac22 | 2014-06-03 10:58:34 +0100 | [diff] [blame] | 121 | |
| 122 | // Throw away invalid credentials and force a refresh. |
| 123 | oauth_access_token_.clear(); |
| 124 | auth_token_expiry_time_ = base::Time(); |
| 125 | verified_email_.clear(); |
| 126 | |
Torne (Richard Coles) | 5d1f7b1 | 2014-02-21 12:16:55 +0000 | [diff] [blame] | 127 | NotifyCallbacks(OAuthTokenGetter::AUTH_ERROR, std::string(), std::string()); |
| 128 | } |
| 129 | |
| 130 | void OAuthTokenGetter::OnNetworkError(int response_code) { |
| 131 | DCHECK(CalledOnValidThread()); |
| 132 | LOG(ERROR) << "Network error when trying to update OAuth token: " |
| 133 | << response_code; |
| 134 | refreshing_oauth_token_ = false; |
| 135 | NotifyCallbacks( |
| 136 | OAuthTokenGetter::NETWORK_ERROR, std::string(), std::string()); |
| 137 | } |
| 138 | |
| 139 | void OAuthTokenGetter::CallWithToken(const TokenCallback& on_access_token) { |
| 140 | DCHECK(CalledOnValidThread()); |
Torne (Richard Coles) | cedac22 | 2014-06-03 10:58:34 +0100 | [diff] [blame] | 141 | bool need_new_auth_token = auth_token_expiry_time_.is_null() || |
| 142 | base::Time::Now() >= auth_token_expiry_time_ || |
| 143 | verified_email_.empty(); |
| 144 | |
Torne (Richard Coles) | 5d1f7b1 | 2014-02-21 12:16:55 +0000 | [diff] [blame] | 145 | if (need_new_auth_token) { |
| 146 | pending_callbacks_.push(on_access_token); |
| 147 | if (!refreshing_oauth_token_) |
| 148 | RefreshOAuthToken(); |
| 149 | } else { |
| 150 | on_access_token.Run( |
| 151 | SUCCESS, oauth_credentials_->login, oauth_access_token_); |
| 152 | } |
| 153 | } |
| 154 | |
| 155 | void OAuthTokenGetter::RefreshOAuthToken() { |
| 156 | DCHECK(CalledOnValidThread()); |
| 157 | HOST_LOG << "Refreshing OAuth token."; |
| 158 | DCHECK(!refreshing_oauth_token_); |
| 159 | |
| 160 | // Service accounts use different API keys, as they use the client app flow. |
| 161 | google_apis::OAuth2Client oauth2_client = |
| 162 | oauth_credentials_->is_service_account ? |
| 163 | google_apis::CLIENT_REMOTING_HOST : google_apis::CLIENT_REMOTING; |
| 164 | |
| 165 | gaia::OAuthClientInfo client_info = { |
| 166 | google_apis::GetOAuth2ClientID(oauth2_client), |
| 167 | google_apis::GetOAuth2ClientSecret(oauth2_client), |
| 168 | // Redirect URL is only used when getting tokens from auth code. It |
| 169 | // is not required when getting access tokens. |
| 170 | "" |
| 171 | }; |
| 172 | |
| 173 | refreshing_oauth_token_ = true; |
| 174 | std::vector<std::string> empty_scope_list; // Use scope from refresh token. |
| 175 | gaia_oauth_client_->RefreshToken( |
| 176 | client_info, oauth_credentials_->refresh_token, empty_scope_list, |
| 177 | kMaxRetries, this); |
| 178 | } |
| 179 | |
| 180 | } // namespace remoting |