blob: 46fbac166db1208a90814aa87fde72baa6bb4f00 [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "google_apis/gaia/gaia_oauth_client.h"
#include "base/json/json_reader.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "base/values.h"
#include "google_apis/gaia/gaia_urls.h"
#include "googleurl/src/gurl.h"
#include "net/base/escape.h"
#include "net/http/http_status_code.h"
#include "net/url_request/url_fetcher.h"
#include "net/url_request/url_fetcher_delegate.h"
#include "net/url_request/url_request_context_getter.h"
namespace {
const char kAccessTokenValue[] = "access_token";
const char kRefreshTokenValue[] = "refresh_token";
const char kExpiresInValue[] = "expires_in";
}
namespace gaia {
class GaiaOAuthClient::Core
: public base::RefCountedThreadSafe<GaiaOAuthClient::Core>,
public net::URLFetcherDelegate {
public:
Core(const std::string& gaia_url,
net::URLRequestContextGetter* request_context_getter)
: gaia_url_(gaia_url),
num_retries_(0),
request_context_getter_(request_context_getter),
delegate_(NULL),
request_type_(NO_PENDING_REQUEST) {
}
void GetTokensFromAuthCode(const OAuthClientInfo& oauth_client_info,
const std::string& auth_code,
int max_retries,
GaiaOAuthClient::Delegate* delegate);
void RefreshToken(const OAuthClientInfo& oauth_client_info,
const std::string& refresh_token,
int max_retries,
GaiaOAuthClient::Delegate* delegate);
void GetUserInfo(const std::string& oauth_access_token,
int max_retries,
Delegate* delegate);
// net::URLFetcherDelegate implementation.
virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
private:
friend class base::RefCountedThreadSafe<Core>;
enum RequestType {
NO_PENDING_REQUEST,
TOKENS_FROM_AUTH_CODE,
REFRESH_TOKEN,
USER_INFO,
};
virtual ~Core() {}
void MakeGaiaRequest(const std::string& post_body,
int max_retries,
GaiaOAuthClient::Delegate* delegate);
void HandleResponse(const net::URLFetcher* source,
bool* should_retry_request);
GURL gaia_url_;
int num_retries_;
scoped_refptr<net::URLRequestContextGetter> request_context_getter_;
GaiaOAuthClient::Delegate* delegate_;
scoped_ptr<net::URLFetcher> request_;
RequestType request_type_;
};
void GaiaOAuthClient::Core::GetTokensFromAuthCode(
const OAuthClientInfo& oauth_client_info,
const std::string& auth_code,
int max_retries,
GaiaOAuthClient::Delegate* delegate) {
DCHECK_EQ(request_type_, NO_PENDING_REQUEST);
request_type_ = TOKENS_FROM_AUTH_CODE;
std::string post_body =
"code=" + net::EscapeUrlEncodedData(auth_code, true) +
"&client_id=" + net::EscapeUrlEncodedData(oauth_client_info.client_id,
true) +
"&client_secret=" +
net::EscapeUrlEncodedData(oauth_client_info.client_secret, true) +
"&redirect_uri=" +
net::EscapeUrlEncodedData(oauth_client_info.redirect_uri, true) +
"&grant_type=authorization_code";
MakeGaiaRequest(post_body, max_retries, delegate);
}
void GaiaOAuthClient::Core::RefreshToken(
const OAuthClientInfo& oauth_client_info,
const std::string& refresh_token,
int max_retries,
GaiaOAuthClient::Delegate* delegate) {
DCHECK_EQ(request_type_, NO_PENDING_REQUEST);
request_type_ = REFRESH_TOKEN;
std::string post_body =
"refresh_token=" + net::EscapeUrlEncodedData(refresh_token, true) +
"&client_id=" + net::EscapeUrlEncodedData(oauth_client_info.client_id,
true) +
"&client_secret=" +
net::EscapeUrlEncodedData(oauth_client_info.client_secret, true) +
"&grant_type=refresh_token";
MakeGaiaRequest(post_body, max_retries, delegate);
}
void GaiaOAuthClient::Core::GetUserInfo(const std::string& oauth_access_token,
int max_retries,
Delegate* delegate) {
DCHECK_EQ(request_type_, NO_PENDING_REQUEST);
DCHECK(!request_.get());
request_type_ = USER_INFO;
delegate_ = delegate;
num_retries_ = 0;
request_.reset(net::URLFetcher::Create(
0, GURL(GaiaUrls::GetInstance()->oauth_user_info_url()),
net::URLFetcher::GET, this));
request_->SetRequestContext(request_context_getter_);
request_->AddExtraRequestHeader(
"Authorization: OAuth " + oauth_access_token);
request_->SetMaxRetries(max_retries);
request_->Start();
}
void GaiaOAuthClient::Core::MakeGaiaRequest(
const std::string& post_body,
int max_retries,
GaiaOAuthClient::Delegate* delegate) {
DCHECK(!request_.get()) << "Tried to fetch two things at once!";
delegate_ = delegate;
num_retries_ = 0;
request_.reset(net::URLFetcher::Create(
0, gaia_url_, net::URLFetcher::POST, this));
request_->SetRequestContext(request_context_getter_);
request_->SetUploadData("application/x-www-form-urlencoded", post_body);
request_->SetMaxRetries(max_retries);
request_->Start();
}
// URLFetcher::Delegate implementation.
void GaiaOAuthClient::Core::OnURLFetchComplete(
const net::URLFetcher* source) {
bool should_retry = false;
HandleResponse(source, &should_retry);
if (should_retry) {
// Explicitly call ReceivedContentWasMalformed() to ensure the current
// request gets counted as a failure for calculation of the back-off
// period. If it was already a failure by status code, this call will
// be ignored.
request_->ReceivedContentWasMalformed();
num_retries_++;
// We must set our request_context_getter_ again because
// URLFetcher::Core::RetryOrCompleteUrlFetch resets it to NULL...
request_->SetRequestContext(request_context_getter_);
request_->Start();
}
}
void GaiaOAuthClient::Core::HandleResponse(
const net::URLFetcher* source,
bool* should_retry_request) {
// Keep the URLFetcher object in case we need to reuse it.
scoped_ptr<net::URLFetcher> old_request = request_.Pass();
DCHECK_EQ(source, old_request.get());
// RC_BAD_REQUEST means the arguments are invalid. No point retrying. We are
// done here.
if (source->GetResponseCode() == net::HTTP_BAD_REQUEST) {
delegate_->OnOAuthError();
return;
}
scoped_ptr<DictionaryValue> response_dict;
if (source->GetResponseCode() == net::HTTP_OK) {
std::string data;
source->GetResponseAsString(&data);
scoped_ptr<Value> message_value(base::JSONReader::Read(data));
if (message_value.get() &&
message_value->IsType(Value::TYPE_DICTIONARY)) {
response_dict.reset(
static_cast<DictionaryValue*>(message_value.release()));
}
}
if (!response_dict.get()) {
// If we don't have an access token yet and the the error was not
// RC_BAD_REQUEST, we may need to retry.
if ((source->GetMaxRetries() != -1) &&
(num_retries_ > source->GetMaxRetries())) {
// Retry limit reached. Give up.
delegate_->OnNetworkError(source->GetResponseCode());
} else {
request_ = old_request.Pass();
*should_retry_request = true;
}
return;
}
RequestType type = request_type_;
request_type_ = NO_PENDING_REQUEST;
switch (type) {
case USER_INFO: {
std::string email;
response_dict->GetString("email", &email);
delegate_->OnGetUserInfoResponse(email);
break;
}
case TOKENS_FROM_AUTH_CODE:
case REFRESH_TOKEN: {
std::string access_token;
std::string refresh_token;
int expires_in_seconds = 0;
response_dict->GetString(kAccessTokenValue, &access_token);
response_dict->GetString(kRefreshTokenValue, &refresh_token);
response_dict->GetInteger(kExpiresInValue, &expires_in_seconds);
if (access_token.empty()) {
delegate_->OnOAuthError();
return;
}
if (type == REFRESH_TOKEN) {
delegate_->OnRefreshTokenResponse(access_token, expires_in_seconds);
} else {
delegate_->OnGetTokensResponse(refresh_token,
access_token,
expires_in_seconds);
}
break;
}
default:
NOTREACHED();
}
}
GaiaOAuthClient::GaiaOAuthClient(const std::string& gaia_url,
net::URLRequestContextGetter* context_getter) {
core_ = new Core(gaia_url, context_getter);
}
GaiaOAuthClient::~GaiaOAuthClient() {
}
void GaiaOAuthClient::GetTokensFromAuthCode(
const OAuthClientInfo& oauth_client_info,
const std::string& auth_code,
int max_retries,
Delegate* delegate) {
return core_->GetTokensFromAuthCode(oauth_client_info,
auth_code,
max_retries,
delegate);
}
void GaiaOAuthClient::RefreshToken(const OAuthClientInfo& oauth_client_info,
const std::string& refresh_token,
int max_retries,
Delegate* delegate) {
return core_->RefreshToken(oauth_client_info,
refresh_token,
max_retries,
delegate);
}
void GaiaOAuthClient::GetUserInfo(const std::string& access_token,
int max_retries,
Delegate* delegate) {
return core_->GetUserInfo(access_token, max_retries, delegate);
}
} // namespace gaia