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| 1 // Copyright (c) 2012 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 "chrome/common/net/gaia/oauth2_access_token_fetcher.h" | |
| 6 | |
| 7 #include <algorithm> | |
| 8 #include <string> | |
| 9 #include <vector> | |
| 10 | |
| 11 #include "base/json/json_reader.h" | |
| 12 #include "base/string_util.h" | |
| 13 #include "base/stringprintf.h" | |
| 14 #include "base/time.h" | |
| 15 #include "base/values.h" | |
| 16 #include "chrome/common/net/gaia/gaia_urls.h" | |
| 17 #include "chrome/common/net/gaia/google_service_auth_error.h" | |
| 18 #include "net/base/escape.h" | |
| 19 #include "net/base/load_flags.h" | |
| 20 #include "net/http/http_status_code.h" | |
| 21 #include "net/url_request/url_fetcher.h" | |
| 22 #include "net/url_request/url_request_context_getter.h" | |
| 23 #include "net/url_request/url_request_status.h" | |
| 24 | |
| 25 using net::ResponseCookies; | |
| 26 using net::URLFetcher; | |
| 27 using net::URLFetcherDelegate; | |
| 28 using net::URLRequestContextGetter; | |
| 29 using net::URLRequestStatus; | |
| 30 | |
| 31 namespace { | |
| 32 static const char kGetAccessTokenBodyFormat[] = | |
| 33 "client_id=%s&" | |
| 34 "client_secret=%s&" | |
| 35 "grant_type=refresh_token&" | |
| 36 "refresh_token=%s"; | |
| 37 | |
| 38 static const char kGetAccessTokenBodyWithScopeFormat[] = | |
| 39 "client_id=%s&" | |
| 40 "client_secret=%s&" | |
| 41 "grant_type=refresh_token&" | |
| 42 "refresh_token=%s&" | |
| 43 "scope=%s"; | |
| 44 | |
| 45 static const char kAccessTokenKey[] = "access_token"; | |
| 46 static const char kExpiresInKey[] = "expires_in"; | |
| 47 | |
| 48 static GoogleServiceAuthError CreateAuthError(URLRequestStatus status) { | |
| 49 CHECK(!status.is_success()); | |
| 50 if (status.status() == URLRequestStatus::CANCELED) { | |
| 51 return GoogleServiceAuthError(GoogleServiceAuthError::REQUEST_CANCELED); | |
| 52 } else { | |
| 53 DLOG(WARNING) << "Could not reach Google Accounts servers: errno " | |
| 54 << status.error(); | |
| 55 return GoogleServiceAuthError::FromConnectionError(status.error()); | |
| 56 } | |
| 57 } | |
| 58 | |
| 59 static URLFetcher* CreateFetcher(URLRequestContextGetter* getter, | |
| 60 const GURL& url, | |
| 61 const std::string& body, | |
| 62 URLFetcherDelegate* delegate) { | |
| 63 bool empty_body = body.empty(); | |
| 64 URLFetcher* result = net::URLFetcher::Create( | |
| 65 0, url, | |
| 66 empty_body ? URLFetcher::GET : URLFetcher::POST, | |
| 67 delegate); | |
| 68 | |
| 69 result->SetRequestContext(getter); | |
| 70 result->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES | | |
| 71 net::LOAD_DO_NOT_SAVE_COOKIES); | |
| 72 | |
| 73 if (!empty_body) | |
| 74 result->SetUploadData("application/x-www-form-urlencoded", body); | |
| 75 | |
| 76 return result; | |
| 77 } | |
| 78 } // namespace | |
| 79 | |
| 80 OAuth2AccessTokenFetcher::OAuth2AccessTokenFetcher( | |
| 81 OAuth2AccessTokenConsumer* consumer, | |
| 82 URLRequestContextGetter* getter) | |
| 83 : consumer_(consumer), | |
| 84 getter_(getter), | |
| 85 state_(INITIAL) { } | |
| 86 | |
| 87 OAuth2AccessTokenFetcher::~OAuth2AccessTokenFetcher() { } | |
| 88 | |
| 89 void OAuth2AccessTokenFetcher::CancelRequest() { | |
| 90 fetcher_.reset(); | |
| 91 } | |
| 92 | |
| 93 void OAuth2AccessTokenFetcher::Start(const std::string& client_id, | |
| 94 const std::string& client_secret, | |
| 95 const std::string& refresh_token, | |
| 96 const std::vector<std::string>& scopes) { | |
| 97 client_id_ = client_id; | |
| 98 client_secret_ = client_secret; | |
| 99 refresh_token_ = refresh_token; | |
| 100 scopes_ = scopes; | |
| 101 StartGetAccessToken(); | |
| 102 } | |
| 103 | |
| 104 void OAuth2AccessTokenFetcher::StartGetAccessToken() { | |
| 105 CHECK_EQ(INITIAL, state_); | |
| 106 state_ = GET_ACCESS_TOKEN_STARTED; | |
| 107 fetcher_.reset(CreateFetcher( | |
| 108 getter_, | |
| 109 MakeGetAccessTokenUrl(), | |
| 110 MakeGetAccessTokenBody( | |
| 111 client_id_, client_secret_, refresh_token_, scopes_), | |
| 112 this)); | |
| 113 fetcher_->Start(); // OnURLFetchComplete will be called. | |
| 114 } | |
| 115 | |
| 116 void OAuth2AccessTokenFetcher::EndGetAccessToken( | |
| 117 const net::URLFetcher* source) { | |
| 118 CHECK_EQ(GET_ACCESS_TOKEN_STARTED, state_); | |
| 119 state_ = GET_ACCESS_TOKEN_DONE; | |
| 120 | |
| 121 URLRequestStatus status = source->GetStatus(); | |
| 122 if (!status.is_success()) { | |
| 123 OnGetTokenFailure(CreateAuthError(status)); | |
| 124 return; | |
| 125 } | |
| 126 | |
| 127 if (source->GetResponseCode() != net::HTTP_OK) { | |
| 128 OnGetTokenFailure(GoogleServiceAuthError( | |
| 129 GoogleServiceAuthError::INVALID_GAIA_CREDENTIALS)); | |
| 130 return; | |
| 131 } | |
| 132 | |
| 133 // The request was successfully fetched and it returned OK. | |
| 134 // Parse out the access token and the expiration time. | |
| 135 std::string access_token; | |
| 136 int expires_in; | |
| 137 if (!ParseGetAccessTokenResponse(source, &access_token, &expires_in)) { | |
| 138 DLOG(WARNING) << "Response doesn't match expected format"; | |
| 139 OnGetTokenFailure( | |
| 140 GoogleServiceAuthError(GoogleServiceAuthError::SERVICE_UNAVAILABLE)); | |
| 141 return; | |
| 142 } | |
| 143 // The token will expire in |expires_in| seconds. Take a 10% error margin to | |
| 144 // prevent reusing a token too close to its expiration date. | |
| 145 OnGetTokenSuccess( | |
| 146 access_token, | |
| 147 base::Time::Now() + base::TimeDelta::FromSeconds(9 * expires_in / 10)); | |
| 148 } | |
| 149 | |
| 150 void OAuth2AccessTokenFetcher::OnGetTokenSuccess( | |
| 151 const std::string& access_token, | |
| 152 const base::Time& expiration_time) { | |
| 153 consumer_->OnGetTokenSuccess(access_token, expiration_time); | |
| 154 } | |
| 155 | |
| 156 void OAuth2AccessTokenFetcher::OnGetTokenFailure( | |
| 157 const GoogleServiceAuthError& error) { | |
| 158 state_ = ERROR_STATE; | |
| 159 consumer_->OnGetTokenFailure(error); | |
| 160 } | |
| 161 | |
| 162 void OAuth2AccessTokenFetcher::OnURLFetchComplete( | |
| 163 const net::URLFetcher* source) { | |
| 164 CHECK(source); | |
| 165 CHECK(state_ == GET_ACCESS_TOKEN_STARTED); | |
| 166 EndGetAccessToken(source); | |
| 167 } | |
| 168 | |
| 169 // static | |
| 170 GURL OAuth2AccessTokenFetcher::MakeGetAccessTokenUrl() { | |
| 171 return GURL(GaiaUrls::GetInstance()->oauth2_token_url()); | |
| 172 } | |
| 173 | |
| 174 // static | |
| 175 std::string OAuth2AccessTokenFetcher::MakeGetAccessTokenBody( | |
| 176 const std::string& client_id, | |
| 177 const std::string& client_secret, | |
| 178 const std::string& refresh_token, | |
| 179 const std::vector<std::string>& scopes) { | |
| 180 std::string enc_client_id = net::EscapeUrlEncodedData(client_id, true); | |
| 181 std::string enc_client_secret = | |
| 182 net::EscapeUrlEncodedData(client_secret, true); | |
| 183 std::string enc_refresh_token = | |
| 184 net::EscapeUrlEncodedData(refresh_token, true); | |
| 185 if (scopes.empty()) { | |
| 186 return StringPrintf( | |
| 187 kGetAccessTokenBodyFormat, | |
| 188 enc_client_id.c_str(), | |
| 189 enc_client_secret.c_str(), | |
| 190 enc_refresh_token.c_str()); | |
| 191 } else { | |
| 192 std::string scopes_string = JoinString(scopes, ' '); | |
| 193 return StringPrintf( | |
| 194 kGetAccessTokenBodyWithScopeFormat, | |
| 195 enc_client_id.c_str(), | |
| 196 enc_client_secret.c_str(), | |
| 197 enc_refresh_token.c_str(), | |
| 198 net::EscapeUrlEncodedData(scopes_string, true).c_str()); | |
| 199 } | |
| 200 } | |
| 201 | |
| 202 // static | |
| 203 bool OAuth2AccessTokenFetcher::ParseGetAccessTokenResponse( | |
| 204 const net::URLFetcher* source, | |
| 205 std::string* access_token, | |
| 206 int* expires_in) { | |
| 207 CHECK(source); | |
| 208 CHECK(access_token); | |
| 209 std::string data; | |
| 210 source->GetResponseAsString(&data); | |
| 211 scoped_ptr<base::Value> value(base::JSONReader::Read(data)); | |
| 212 if (!value.get() || value->GetType() != base::Value::TYPE_DICTIONARY) | |
| 213 return false; | |
| 214 | |
| 215 DictionaryValue* dict = static_cast<DictionaryValue*>(value.get()); | |
| 216 return dict->GetString(kAccessTokenKey, access_token) && | |
| 217 dict->GetInteger(kExpiresInKey, expires_in); | |
| 218 } | |
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Chromium Code Reviews
Issue 10928017:
Moving google_apis and GaiaClient to src/google_apis. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src