| // Copyright 2014 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/gcm/engine/registration_request.h" |
| |
| #include <stddef.h> |
| #include <utility> |
| |
| #include "base/bind.h" |
| #include "base/location.h" |
| #include "base/macros.h" |
| #include "base/message_loop/message_loop.h" |
| #include "base/metrics/histogram.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "base/threading/thread_task_runner_handle.h" |
| #include "base/values.h" |
| #include "google_apis/gcm/base/gcm_util.h" |
| #include "google_apis/gcm/monitoring/gcm_stats_recorder.h" |
| #include "net/base/load_flags.h" |
| #include "net/http/http_request_headers.h" |
| #include "net/http/http_status_code.h" |
| #include "net/url_request/url_fetcher.h" |
| #include "net/url_request/url_request_context_getter.h" |
| #include "net/url_request/url_request_status.h" |
| #include "url/gurl.h" |
| |
| namespace gcm { |
| |
| namespace { |
| |
| const char kRegistrationRequestContentType[] = |
| "application/x-www-form-urlencoded"; |
| |
| // Request constants. |
| const char kAppIdKey[] = "app"; |
| const char kDeviceIdKey[] = "device"; |
| const char kLoginHeader[] = "AidLogin"; |
| |
| // Response constants. |
| const char kErrorPrefix[] = "Error="; |
| const char kTokenPrefix[] = "token="; |
| const char kDeviceRegistrationError[] = "PHONE_REGISTRATION_ERROR"; |
| const char kAuthenticationFailed[] = "AUTHENTICATION_FAILED"; |
| const char kInvalidSender[] = "INVALID_SENDER"; |
| const char kInvalidParameters[] = "INVALID_PARAMETERS"; |
| |
| // Gets correct status from the error message. |
| RegistrationRequest::Status GetStatusFromError(const std::string& error) { |
| // TODO(fgorski): Improve error parsing in case there is nore then just an |
| // Error=ERROR_STRING in response. |
| if (error.find(kDeviceRegistrationError) != std::string::npos) |
| return RegistrationRequest::DEVICE_REGISTRATION_ERROR; |
| if (error.find(kAuthenticationFailed) != std::string::npos) |
| return RegistrationRequest::AUTHENTICATION_FAILED; |
| if (error.find(kInvalidSender) != std::string::npos) |
| return RegistrationRequest::INVALID_SENDER; |
| if (error.find(kInvalidParameters) != std::string::npos) |
| return RegistrationRequest::INVALID_PARAMETERS; |
| return RegistrationRequest::UNKNOWN_ERROR; |
| } |
| |
| // Indicates whether a retry attempt should be made based on the status of the |
| // last request. |
| bool ShouldRetryWithStatus(RegistrationRequest::Status status) { |
| return status == RegistrationRequest::UNKNOWN_ERROR || |
| status == RegistrationRequest::AUTHENTICATION_FAILED || |
| status == RegistrationRequest::DEVICE_REGISTRATION_ERROR || |
| status == RegistrationRequest::HTTP_NOT_OK || |
| status == RegistrationRequest::URL_FETCHING_FAILED || |
| status == RegistrationRequest::RESPONSE_PARSING_FAILED; |
| } |
| |
| } // namespace |
| |
| RegistrationRequest::RequestInfo::RequestInfo(uint64_t android_id, |
| uint64_t security_token, |
| const std::string& app_id) |
| : android_id(android_id), security_token(security_token), app_id(app_id) { |
| DCHECK(android_id != 0UL); |
| DCHECK(security_token != 0UL); |
| } |
| |
| RegistrationRequest::RequestInfo::~RequestInfo() {} |
| |
| RegistrationRequest::CustomRequestHandler::CustomRequestHandler() {} |
| |
| RegistrationRequest::CustomRequestHandler::~CustomRequestHandler() {} |
| |
| RegistrationRequest::RegistrationRequest( |
| const GURL& registration_url, |
| const RequestInfo& request_info, |
| std::unique_ptr<CustomRequestHandler> custom_request_handler, |
| const net::BackoffEntry::Policy& backoff_policy, |
| const RegistrationCallback& callback, |
| int max_retry_count, |
| scoped_refptr<net::URLRequestContextGetter> request_context_getter, |
| GCMStatsRecorder* recorder, |
| const std::string& source_to_record) |
| : callback_(callback), |
| request_info_(request_info), |
| custom_request_handler_(std::move(custom_request_handler)), |
| registration_url_(registration_url), |
| backoff_entry_(&backoff_policy), |
| request_context_getter_(request_context_getter), |
| retries_left_(max_retry_count), |
| recorder_(recorder), |
| source_to_record_(source_to_record), |
| weak_ptr_factory_(this) { |
| DCHECK_GE(max_retry_count, 0); |
| } |
| |
| RegistrationRequest::~RegistrationRequest() {} |
| |
| void RegistrationRequest::Start() { |
| DCHECK(!callback_.is_null()); |
| DCHECK(!url_fetcher_.get()); |
| |
| url_fetcher_ = |
| net::URLFetcher::Create(registration_url_, net::URLFetcher::POST, this); |
| url_fetcher_->SetRequestContext(request_context_getter_.get()); |
| url_fetcher_->SetLoadFlags(net::LOAD_DO_NOT_SEND_COOKIES | |
| net::LOAD_DO_NOT_SAVE_COOKIES); |
| |
| std::string extra_headers; |
| BuildRequestHeaders(&extra_headers); |
| url_fetcher_->SetExtraRequestHeaders(extra_headers); |
| |
| std::string body; |
| BuildRequestBody(&body); |
| |
| DVLOG(1) << "Performing registration for: " << request_info_.app_id; |
| DVLOG(1) << "Registration request: " << body; |
| url_fetcher_->SetUploadData(kRegistrationRequestContentType, body); |
| recorder_->RecordRegistrationSent(request_info_.app_id, source_to_record_); |
| request_start_time_ = base::TimeTicks::Now(); |
| url_fetcher_->Start(); |
| } |
| |
| void RegistrationRequest::BuildRequestHeaders(std::string* extra_headers) { |
| net::HttpRequestHeaders headers; |
| headers.SetHeader( |
| net::HttpRequestHeaders::kAuthorization, |
| std::string(kLoginHeader) + " " + |
| base::Uint64ToString(request_info_.android_id) + ":" + |
| base::Uint64ToString(request_info_.security_token)); |
| *extra_headers = headers.ToString(); |
| } |
| |
| void RegistrationRequest::BuildRequestBody(std::string* body) { |
| BuildFormEncoding(kAppIdKey, request_info_.app_id, body); |
| BuildFormEncoding(kDeviceIdKey, |
| base::Uint64ToString(request_info_.android_id), |
| body); |
| |
| DCHECK(custom_request_handler_.get()); |
| custom_request_handler_->BuildRequestBody(body); |
| } |
| |
| void RegistrationRequest::RetryWithBackoff() { |
| DCHECK_GT(retries_left_, 0); |
| --retries_left_; |
| url_fetcher_.reset(); |
| backoff_entry_.InformOfRequest(false); |
| |
| DVLOG(1) << "Delaying GCM registration of app: " |
| << request_info_.app_id << ", for " |
| << backoff_entry_.GetTimeUntilRelease().InMilliseconds() |
| << " milliseconds."; |
| recorder_->RecordRegistrationRetryDelayed( |
| request_info_.app_id, |
| source_to_record_, |
| backoff_entry_.GetTimeUntilRelease().InMilliseconds(), |
| retries_left_ + 1); |
| DCHECK(!weak_ptr_factory_.HasWeakPtrs()); |
| base::ThreadTaskRunnerHandle::Get()->PostDelayedTask( |
| FROM_HERE, |
| base::Bind(&RegistrationRequest::Start, weak_ptr_factory_.GetWeakPtr()), |
| backoff_entry_.GetTimeUntilRelease()); |
| } |
| |
| RegistrationRequest::Status RegistrationRequest::ParseResponse( |
| const net::URLFetcher* source, std::string* token) { |
| if (!source->GetStatus().is_success()) { |
| LOG(ERROR) << "URL fetching failed."; |
| return URL_FETCHING_FAILED; |
| } |
| |
| std::string response; |
| if (!source->GetResponseAsString(&response)) { |
| LOG(ERROR) << "Failed to parse registration response as a string."; |
| return RESPONSE_PARSING_FAILED; |
| } |
| |
| if (source->GetResponseCode() == net::HTTP_OK) { |
| size_t token_pos = response.find(kTokenPrefix); |
| if (token_pos != std::string::npos) { |
| *token = response.substr(token_pos + arraysize(kTokenPrefix) - 1); |
| return SUCCESS; |
| } |
| } |
| |
| // If we are able to parse a meaningful known error, let's do so. Some errors |
| // will have HTTP_BAD_REQUEST, some will have HTTP_OK response code. |
| size_t error_pos = response.find(kErrorPrefix); |
| if (error_pos != std::string::npos) { |
| std::string error = response.substr( |
| error_pos + arraysize(kErrorPrefix) - 1); |
| return GetStatusFromError(error); |
| } |
| |
| // If we cannot tell what the error is, but at least we know response code was |
| // not OK. |
| if (source->GetResponseCode() != net::HTTP_OK) { |
| DLOG(ERROR) << "URL fetching HTTP response code is not OK. It is " |
| << source->GetResponseCode(); |
| return HTTP_NOT_OK; |
| } |
| |
| return UNKNOWN_ERROR; |
| } |
| |
| void RegistrationRequest::OnURLFetchComplete(const net::URLFetcher* source) { |
| std::string token; |
| Status status = ParseResponse(source, &token); |
| recorder_->RecordRegistrationResponse( |
| request_info_.app_id, |
| source_to_record_, |
| status); |
| |
| DCHECK(custom_request_handler_.get()); |
| custom_request_handler_->ReportUMAs( |
| status, |
| backoff_entry_.failure_count(), |
| base::TimeTicks::Now() - request_start_time_); |
| |
| if (ShouldRetryWithStatus(status)) { |
| if (retries_left_ > 0) { |
| RetryWithBackoff(); |
| return; |
| } |
| |
| status = REACHED_MAX_RETRIES; |
| recorder_->RecordRegistrationResponse( |
| request_info_.app_id, |
| source_to_record_, |
| status); |
| |
| // Only REACHED_MAX_RETRIES is reported because the function will skip |
| // reporting count and time when status is not SUCCESS. |
| DCHECK(custom_request_handler_.get()); |
| custom_request_handler_->ReportUMAs(status, 0, base::TimeDelta()); |
| } |
| |
| callback_.Run(status, token); |
| } |
| |
| } // namespace gcm |