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- // 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 <memory>
- #include <utility>
- #include "base/bind.h"
- #include "base/check.h"
- #include "base/check_op.h"
- #include "base/json/json_reader.h"
- #include "base/memory/raw_ptr.h"
- #include "base/memory/weak_ptr.h"
- #include "base/notreached.h"
- #include "base/strings/escape.h"
- #include "base/strings/strcat.h"
- #include "base/strings/string_util.h"
- #include "base/threading/thread_task_runner_handle.h"
- #include "base/values.h"
- #include "google_apis/gaia/gaia_auth_util.h"
- #include "google_apis/gaia/gaia_urls.h"
- #include "net/base/backoff_entry.h"
- #include "net/base/load_flags.h"
- #include "net/http/http_status_code.h"
- #include "net/traffic_annotation/network_traffic_annotation.h"
- #include "net/url_request/url_request_throttler_entry.h"
- #include "services/network/public/cpp/resource_request.h"
- #include "services/network/public/cpp/shared_url_loader_factory.h"
- #include "services/network/public/cpp/simple_url_loader.h"
- #include "services/network/public/mojom/url_response_head.mojom.h"
- #include "url/gurl.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:
- Core(scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory)
- : backoff_entry_(&backoff_policy_),
- num_retries_(0),
- max_retries_(0),
- url_loader_factory_(url_loader_factory),
- delegate_(nullptr),
- request_type_(NO_PENDING_REQUEST) {
- backoff_policy_.num_errors_to_ignore =
- net::URLRequestThrottlerEntry::kDefaultNumErrorsToIgnore;
- backoff_policy_.initial_delay_ms =
- net::URLRequestThrottlerEntry::kDefaultInitialDelayMs;
- backoff_policy_.multiply_factor =
- net::URLRequestThrottlerEntry::kDefaultMultiplyFactor;
- backoff_policy_.jitter_factor =
- net::URLRequestThrottlerEntry::kDefaultJitterFactor;
- backoff_policy_.maximum_backoff_ms =
- net::URLRequestThrottlerEntry::kDefaultMaximumBackoffMs;
- backoff_policy_.entry_lifetime_ms =
- net::URLRequestThrottlerEntry::kDefaultEntryLifetimeMs;
- backoff_policy_.always_use_initial_delay = false;
- }
- 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,
- const std::vector<std::string>& scopes,
- int max_retries,
- GaiaOAuthClient::Delegate* delegate);
- void GetUserEmail(const std::string& oauth_access_token,
- int max_retries,
- Delegate* delegate);
- void GetUserId(const std::string& oauth_access_token,
- int max_retries,
- Delegate* delegate);
- void GetUserInfo(const std::string& oauth_access_token,
- int max_retries,
- Delegate* delegate);
- void GetAccountCapabilities(
- const std::string& oauth_access_token,
- const std::vector<std::string>& capabilities_names,
- int max_retries,
- Delegate* delegate);
- void GetTokenInfo(const std::string& qualifier,
- const std::string& query,
- int max_retries,
- Delegate* delegate);
- // Called as a SimpleURLLoader callback
- void OnURLLoadComplete(std::unique_ptr<std::string> body);
- private:
- friend class base::RefCountedThreadSafe<Core>;
- enum RequestType {
- NO_PENDING_REQUEST,
- TOKENS_FROM_AUTH_CODE,
- REFRESH_TOKEN,
- TOKEN_INFO,
- USER_EMAIL,
- USER_ID,
- USER_INFO,
- ACCOUNT_CAPABILITIES,
- };
- ~Core() {}
- void GetUserInfoImpl(RequestType type,
- const std::string& oauth_access_token,
- int max_retries,
- Delegate* delegate);
- // Stores request settings into |this| and calls SendRequest().
- void MakeRequest(
- RequestType type,
- const GURL& url,
- std::string post_body /* may be empty if not needed*/,
- std::string authorization_header /* empty if not needed */,
- std::string http_method_override_header /* empty if not needed */,
- int max_retries,
- GaiaOAuthClient::Delegate* delegate,
- const net::MutableNetworkTrafficAnnotationTag& traffic_annotation);
- // Sends out a request based on things MakeRequest() stored...
- // once |backoff_entry_| says it's OK. Can be called many times to retry,
- // assuming |request_| is destroyed first.
- void SendRequest();
- // Actually sends the request.
- void SendRequestImpl();
- void HandleResponse(std::unique_ptr<std::string> body,
- bool* should_retry_request);
- net::BackoffEntry::Policy backoff_policy_;
- net::BackoffEntry backoff_entry_;
- int num_retries_;
- int max_retries_;
- GURL url_;
- net::MutableNetworkTrafficAnnotationTag traffic_annotation_;
- std::string post_body_;
- std::string authorization_header_;
- std::string http_method_override_header_;
- scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory_;
- raw_ptr<GaiaOAuthClient::Delegate> delegate_;
- std::unique_ptr<network::SimpleURLLoader> request_;
- RequestType request_type_;
- base::WeakPtrFactory<Core> weak_ptr_factory_{this};
- };
- void GaiaOAuthClient::Core::GetTokensFromAuthCode(
- const OAuthClientInfo& oauth_client_info,
- const std::string& auth_code,
- int max_retries,
- GaiaOAuthClient::Delegate* delegate) {
- std::string post_body =
- "code=" + base::EscapeUrlEncodedData(auth_code, true) + "&client_id=" +
- base::EscapeUrlEncodedData(oauth_client_info.client_id, true) +
- "&client_secret=" +
- base::EscapeUrlEncodedData(oauth_client_info.client_secret, true) +
- "&redirect_uri=" +
- base::EscapeUrlEncodedData(oauth_client_info.redirect_uri, true) +
- "&grant_type=authorization_code";
- net::MutableNetworkTrafficAnnotationTag traffic_annotation(
- net::DefineNetworkTrafficAnnotation("gaia_oauth_client_get_tokens", R"(
- semantics {
- sender: "OAuth 2.0 calls"
- description:
- "This request exchanges an authorization code for an OAuth 2.0 "
- "refresh token and an OAuth 2.0 access token."
- trigger:
- "This request is triggered when a Chrome service requires an "
- "access token and a refresh token (e.g. Cloud Print, Chrome Remote "
- "Desktop etc.) See https://developers.google.com/identity/protocols"
- "/OAuth2 for more information about the Google implementation of "
- "the OAuth 2.0 protocol."
- data:
- "The Google console client ID and client secret of the caller, the "
- "OAuth authorization code and the redirect URI."
- destination: GOOGLE_OWNED_SERVICE
- }
- policy {
- cookies_allowed: NO
- setting:
- "This feature cannot be disabled in settings, but if the user "
- "signs out of Chrome, this request would not be made."
- chrome_policy {
- SigninAllowed {
- policy_options {mode: MANDATORY}
- SigninAllowed: false
- }
- }
- })"));
- MakeRequest(TOKENS_FROM_AUTH_CODE,
- GURL(GaiaUrls::GetInstance()->oauth2_token_url()), post_body,
- /* authorization_header = */ std::string(),
- /* http_method_override_header = */ std::string(), max_retries,
- delegate, traffic_annotation);
- }
- void GaiaOAuthClient::Core::RefreshToken(
- const OAuthClientInfo& oauth_client_info,
- const std::string& refresh_token,
- const std::vector<std::string>& scopes,
- int max_retries,
- GaiaOAuthClient::Delegate* delegate) {
- std::string post_body =
- "refresh_token=" + base::EscapeUrlEncodedData(refresh_token, true) +
- "&client_id=" +
- base::EscapeUrlEncodedData(oauth_client_info.client_id, true) +
- "&client_secret=" +
- base::EscapeUrlEncodedData(oauth_client_info.client_secret, true) +
- "&grant_type=refresh_token";
- if (!scopes.empty()) {
- std::string scopes_string = base::JoinString(scopes, " ");
- post_body += "&scope=" + base::EscapeUrlEncodedData(scopes_string, true);
- }
- net::MutableNetworkTrafficAnnotationTag traffic_annotation(
- net::DefineNetworkTrafficAnnotation("gaia_oauth_client_refresh_token", R"(
- semantics {
- sender: "OAuth 2.0 calls"
- description:
- "This request fetches a fresh access token that can be used to "
- "authenticate an API call to a Google web endpoint."
- trigger:
- "This is called whenever the caller needs a fresh OAuth 2.0 access "
- "token."
- data:
- "The OAuth 2.0 refresh token, the Google console client ID and "
- "client secret of the caller, and optionally the scopes of the API "
- "for which the access token should be authorized."
- destination: GOOGLE_OWNED_SERVICE
- }
- policy {
- cookies_allowed: NO
- setting:
- "This feature cannot be disabled in settings, but if the user "
- "signs out of Chrome, this request would not be made."
- chrome_policy {
- SigninAllowed {
- policy_options {mode: MANDATORY}
- SigninAllowed: false
- }
- }
- })"));
- MakeRequest(REFRESH_TOKEN, GURL(GaiaUrls::GetInstance()->oauth2_token_url()),
- post_body,
- /* authorization_header = */ std::string(),
- /* http_method_override_header = */ std::string(), max_retries,
- delegate, traffic_annotation);
- }
- void GaiaOAuthClient::Core::GetUserEmail(const std::string& oauth_access_token,
- int max_retries,
- Delegate* delegate) {
- GetUserInfoImpl(USER_EMAIL, oauth_access_token, max_retries, delegate);
- }
- void GaiaOAuthClient::Core::GetUserId(const std::string& oauth_access_token,
- int max_retries,
- Delegate* delegate) {
- GetUserInfoImpl(USER_ID, oauth_access_token, max_retries, delegate);
- }
- void GaiaOAuthClient::Core::GetUserInfo(const std::string& oauth_access_token,
- int max_retries,
- Delegate* delegate) {
- GetUserInfoImpl(USER_INFO, oauth_access_token, max_retries, delegate);
- }
- void GaiaOAuthClient::Core::GetUserInfoImpl(
- RequestType type,
- const std::string& oauth_access_token,
- int max_retries,
- Delegate* delegate) {
- net::MutableNetworkTrafficAnnotationTag traffic_annotation(
- net::DefineNetworkTrafficAnnotation("gaia_oauth_client_get_user_info", R"(
- semantics {
- sender: "OAuth 2.0 calls"
- description:
- "This request is used to fetch profile information about the user, "
- "like the email, the ID of the account, the full name, and the "
- "profile picture."
- trigger:
- "The main trigger for this request is in the AccountTrackerService "
- "that fetches the user info soon after the user signs in."
- data:
- "The OAuth 2.0 access token of the account."
- destination: GOOGLE_OWNED_SERVICE
- }
- policy {
- cookies_allowed: NO
- setting:
- "This feature cannot be disabled in settings, but if the user "
- "signs out of Chrome, this request would not be made."
- chrome_policy {
- SigninAllowed {
- policy_options {mode: MANDATORY}
- SigninAllowed: false
- }
- }
- })"));
- std::string auth = "OAuth " + oauth_access_token;
- MakeRequest(type, GaiaUrls::GetInstance()->oauth_user_info_url(),
- /* post_body = */ std::string(), auth,
- /* http_method_override_header = */ std::string(), max_retries,
- delegate, traffic_annotation);
- }
- void GaiaOAuthClient::Core::GetTokenInfo(const std::string& qualifier,
- const std::string& query,
- int max_retries,
- Delegate* delegate) {
- std::string post_body =
- qualifier + "=" + base::EscapeUrlEncodedData(query, true);
- net::MutableNetworkTrafficAnnotationTag traffic_annotation(
- net::DefineNetworkTrafficAnnotation("gaia_oauth_client_get_token_info",
- R"(
- semantics {
- sender: "OAuth 2.0 calls"
- description:
- "This request fetches information about an OAuth 2.0 access token. "
- "The response is a dictionary of response values. The provided "
- "access token may have any scope, and basic results will be "
- "returned: issued_to, audience, scope, expires_in, access_type. In "
- "addition, if the https://www.googleapis.com/auth/userinfo.email "
- "scope is present, the email and verified_email fields will be "
- "returned. If the https://www.googleapis.com/auth/userinfo.profile "
- "scope is present, the user_id field will be returned."
- trigger:
- "This is triggered after a Google account is added to the browser. "
- "It it also triggered after each successful fetch of an OAuth 2.0 "
- "access token."
- data: "The OAuth 2.0 access token."
- destination: GOOGLE_OWNED_SERVICE
- }
- policy {
- cookies_allowed: NO
- setting:
- "This feature cannot be disabled in settings, but if the user "
- "signs out of Chrome, this request would not be made."
- chrome_policy {
- SigninAllowed {
- policy_options {mode: MANDATORY}
- SigninAllowed: false
- }
- }
- })"));
- MakeRequest(TOKEN_INFO,
- GURL(GaiaUrls::GetInstance()->oauth2_token_info_url()), post_body,
- /* authorization_header = */ std::string(),
- /* http_method_override_header = */ std::string(), max_retries,
- delegate, traffic_annotation);
- }
- void GaiaOAuthClient::Core::GetAccountCapabilities(
- const std::string& oauth_access_token,
- const std::vector<std::string>& capabilities_names,
- int max_retries,
- Delegate* delegate) {
- DCHECK(!capabilities_names.empty());
- std::string post_body =
- base::StrCat({"names=", base::EscapeUrlEncodedData(
- *capabilities_names.begin(), true)});
- for (auto it = capabilities_names.begin() + 1; it != capabilities_names.end();
- ++it) {
- base::StrAppend(&post_body,
- {"&names=", base::EscapeUrlEncodedData(*it, true)});
- }
- std::string auth = base::StrCat({"Bearer ", oauth_access_token});
- net::MutableNetworkTrafficAnnotationTag traffic_annotation(
- net::DefineNetworkTrafficAnnotation(
- "gaia_oauth_client_get_account_capabilities",
- R"(
- semantics {
- sender: "OAuth 2.0 calls"
- description:
- "This request is used to fetch account capabilities. Capabilities "
- "provide information about state and features of Gaia accounts."
- trigger:
- "AccountTrackerService fetches account capabilities soon after the "
- "user signs in. Afterwards, AccountTrackerService periodically "
- "triggers this request to keep account capabilities up to date for "
- "existing accounts."
- data:
- "The OAuth 2.0 access token of the account and a predefined list "
- "of capabilities to fetch."
- destination: GOOGLE_OWNED_SERVICE
- }
- policy {
- cookies_allowed: NO
- setting:
- "This feature cannot be disabled in settings, but if the user "
- "signs out of Chrome, this request would not be made."
- chrome_policy {
- SigninAllowed {
- SigninAllowed: false
- }
- }
- })"));
- MakeRequest(ACCOUNT_CAPABILITIES,
- GURL(GaiaUrls::GetInstance()->account_capabilities_url()),
- post_body, auth, /*http_method_override_header=*/"GET",
- max_retries, delegate, traffic_annotation);
- }
- void GaiaOAuthClient::Core::MakeRequest(
- RequestType type,
- const GURL& url,
- std::string post_body,
- std::string authorization_header,
- std::string http_method_override_header,
- int max_retries,
- GaiaOAuthClient::Delegate* delegate,
- const net::MutableNetworkTrafficAnnotationTag& traffic_annotation) {
- DCHECK_EQ(request_type_, NO_PENDING_REQUEST);
- request_type_ = type;
- delegate_ = delegate;
- num_retries_ = 0;
- max_retries_ = max_retries;
- url_ = url;
- traffic_annotation_ = traffic_annotation;
- post_body_ = std::move(post_body);
- authorization_header_ = std::move(authorization_header);
- http_method_override_header_ = std::move(http_method_override_header);
- SendRequest();
- }
- void GaiaOAuthClient::Core::SendRequest() {
- if (backoff_entry_.ShouldRejectRequest()) {
- base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
- FROM_HERE,
- base::BindOnce(&GaiaOAuthClient::Core::SendRequestImpl,
- weak_ptr_factory_.GetWeakPtr()),
- backoff_entry_.GetTimeUntilRelease());
- } else {
- SendRequestImpl();
- }
- }
- void GaiaOAuthClient::Core::SendRequestImpl() {
- DCHECK(!request_.get()) << "Tried to fetch two things at once!";
- auto resource_request = std::make_unique<network::ResourceRequest>();
- resource_request->url = url_;
- resource_request->method = post_body_.empty() ? "GET" : "POST";
- resource_request->credentials_mode = network::mojom::CredentialsMode::kOmit;
- if (!authorization_header_.empty())
- resource_request->headers.SetHeader("Authorization", authorization_header_);
- if (!http_method_override_header_.empty()) {
- resource_request->headers.SetHeader("X-HTTP-Method-Override",
- http_method_override_header_);
- }
- request_ = network::SimpleURLLoader::Create(
- std::move(resource_request),
- static_cast<net::NetworkTrafficAnnotationTag>(traffic_annotation_));
- if (!post_body_.empty()) {
- request_->AttachStringForUpload(post_body_,
- "application/x-www-form-urlencoded");
- }
- // Retry is implemented internally.
- request_->SetRetryOptions(0, network::SimpleURLLoader::RETRY_NEVER);
- request_->DownloadToStringOfUnboundedSizeUntilCrashAndDie(
- url_loader_factory_.get(),
- // Unretained(this) is safe since |this| owns |request_|, and its deletion
- // will cancel the callback.
- base::BindOnce(&GaiaOAuthClient::Core::OnURLLoadComplete,
- base::Unretained(this)));
- }
- void GaiaOAuthClient::Core::OnURLLoadComplete(
- std::unique_ptr<std::string> body) {
- bool should_retry = false;
- base::WeakPtr<GaiaOAuthClient::Core> weak_this =
- weak_ptr_factory_.GetWeakPtr();
- // HandleResponse() may delete |this| if it assigns |should_retry| == false.
- HandleResponse(std::move(body), &should_retry);
- if (should_retry) {
- num_retries_++;
- backoff_entry_.InformOfRequest(false);
- SendRequest();
- } else {
- if (weak_this)
- backoff_entry_.InformOfRequest(true);
- }
- }
- void GaiaOAuthClient::Core::HandleResponse(std::unique_ptr<std::string> body,
- bool* should_retry_request) {
- *should_retry_request = false;
- // Move ownership of the request fetcher into a local scoped_ptr which
- // will be nuked when we're done handling the request.
- std::unique_ptr<network::SimpleURLLoader> source = std::move(request_);
- int response_code = -1;
- if (source->ResponseInfo() && source->ResponseInfo()->headers)
- response_code = source->ResponseInfo()->headers->response_code();
- // HTTP_BAD_REQUEST means the arguments are invalid. HTTP_UNAUTHORIZED means
- // the access or refresh token is invalid. No point retrying. We are
- // done here.
- if (response_code == net::HTTP_BAD_REQUEST ||
- response_code == net::HTTP_UNAUTHORIZED) {
- delegate_->OnOAuthError();
- return;
- }
- std::unique_ptr<base::DictionaryValue> response_dict;
- if (response_code == net::HTTP_OK && body) {
- std::string data = std::move(*body);
- std::unique_ptr<base::Value> message_value =
- base::JSONReader::ReadDeprecated(data);
- if (message_value.get() && message_value->is_dict()) {
- response_dict.reset(
- static_cast<base::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 ((max_retries_ != -1) && (num_retries_ >= max_retries_)) {
- // Retry limit reached. Give up.
- request_type_ = NO_PENDING_REQUEST;
- delegate_->OnNetworkError(response_code);
- } else {
- *should_retry_request = true;
- }
- return;
- }
- RequestType type = request_type_;
- request_type_ = NO_PENDING_REQUEST;
- switch (type) {
- case USER_EMAIL: {
- std::string email;
- response_dict->GetString("email", &email);
- delegate_->OnGetUserEmailResponse(email);
- break;
- }
- case USER_ID: {
- std::string id;
- response_dict->GetString("id", &id);
- delegate_->OnGetUserIdResponse(id);
- break;
- }
- case USER_INFO: {
- delegate_->OnGetUserInfoResponse(std::move(response_dict));
- break;
- }
- case TOKEN_INFO: {
- delegate_->OnGetTokenInfoResponse(std::move(response_dict));
- 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;
- }
- case ACCOUNT_CAPABILITIES: {
- delegate_->OnGetAccountCapabilitiesResponse(std::move(response_dict));
- break;
- }
- case NO_PENDING_REQUEST:
- NOTREACHED();
- }
- }
- GaiaOAuthClient::GaiaOAuthClient(
- scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory) {
- core_ = new Core(std::move(url_loader_factory));
- }
- 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,
- const std::vector<std::string>& scopes,
- int max_retries,
- Delegate* delegate) {
- return core_->RefreshToken(oauth_client_info,
- refresh_token,
- scopes,
- max_retries,
- delegate);
- }
- void GaiaOAuthClient::GetUserEmail(const std::string& access_token,
- int max_retries,
- Delegate* delegate) {
- return core_->GetUserEmail(access_token, max_retries, delegate);
- }
- void GaiaOAuthClient::GetUserId(const std::string& access_token,
- int max_retries,
- Delegate* delegate) {
- return core_->GetUserId(access_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);
- }
- void GaiaOAuthClient::GetTokenInfo(const std::string& access_token,
- int max_retries,
- Delegate* delegate) {
- return core_->GetTokenInfo("access_token", access_token, max_retries,
- delegate);
- }
- void GaiaOAuthClient::GetTokenHandleInfo(const std::string& token_handle,
- int max_retries,
- Delegate* delegate) {
- return core_->GetTokenInfo("token_handle", token_handle, max_retries,
- delegate);
- }
- void GaiaOAuthClient::GetAccountCapabilities(
- const std::string& oauth_access_token,
- const std::vector<std::string>& capabilities_names,
- int max_retries,
- Delegate* delegate) {
- return core_->GetAccountCapabilities(oauth_access_token, capabilities_names,
- max_retries, delegate);
- }
- } // namespace gaia
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