blob: 9432725ed16ffcf732674bd9bc016ec9227844be [file] [log] [blame]
// 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/unregistration_request.h"
#include <utility>
#include "base/bind.h"
#include "base/location.h"
#include "base/stl_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_piece.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/escape.h"
#include "net/base/load_flags.h"
#include "net/http/http_request_headers.h"
#include "net/http/http_status_code.h"
#include "net/traffic_annotation/network_traffic_annotation.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"
namespace gcm {
namespace {
const char kRequestContentType[] = "application/x-www-form-urlencoded";
// Request constants.
const char kCategoryKey[] = "app";
const char kSubtypeKey[] = "X-subtype";
const char kDeleteKey[] = "delete";
const char kDeleteValue[] = "true";
const char kDeviceIdKey[] = "device";
const char kLoginHeader[] = "AidLogin";
// Response constants.
const char kErrorPrefix[] = "Error=";
const char kInvalidParameters[] = "INVALID_PARAMETERS";
const char kInternalServerError[] = "InternalServerError";
const char kDeviceRegistrationError[] = "PHONE_REGISTRATION_ERROR";
// Gets correct status from the error message.
UnregistrationRequest::Status GetStatusFromError(const std::string& error) {
if (error.find(kInvalidParameters) != std::string::npos)
return UnregistrationRequest::INVALID_PARAMETERS;
if (error.find(kInternalServerError) != std::string::npos)
return UnregistrationRequest::INTERNAL_SERVER_ERROR;
if (error.find(kDeviceRegistrationError) != std::string::npos)
return UnregistrationRequest::DEVICE_REGISTRATION_ERROR;
// Should not be reached, unless the server adds new error types.
return UnregistrationRequest::UNKNOWN_ERROR;
}
// Determines whether to retry based on the status of the last request.
bool ShouldRetryWithStatus(UnregistrationRequest::Status status) {
switch (status) {
case UnregistrationRequest::URL_FETCHING_FAILED:
case UnregistrationRequest::NO_RESPONSE_BODY:
case UnregistrationRequest::RESPONSE_PARSING_FAILED:
case UnregistrationRequest::INCORRECT_APP_ID:
case UnregistrationRequest::SERVICE_UNAVAILABLE:
case UnregistrationRequest::INTERNAL_SERVER_ERROR:
case UnregistrationRequest::HTTP_NOT_OK:
return true;
case UnregistrationRequest::SUCCESS:
case UnregistrationRequest::INVALID_PARAMETERS:
case UnregistrationRequest::DEVICE_REGISTRATION_ERROR:
case UnregistrationRequest::UNKNOWN_ERROR:
case UnregistrationRequest::REACHED_MAX_RETRIES:
return false;
case UnregistrationRequest::UNREGISTRATION_STATUS_COUNT:
NOTREACHED();
break;
}
return false;
}
} // namespace
UnregistrationRequest::RequestInfo::RequestInfo(uint64_t android_id,
uint64_t security_token,
const std::string& category,
const std::string& subtype)
: android_id(android_id),
security_token(security_token),
category(category),
subtype(subtype) {
DCHECK(android_id != 0UL);
DCHECK(security_token != 0UL);
DCHECK(!category.empty());
}
UnregistrationRequest::RequestInfo::~RequestInfo() {}
UnregistrationRequest::CustomRequestHandler::CustomRequestHandler() {}
UnregistrationRequest::CustomRequestHandler::~CustomRequestHandler() {}
UnregistrationRequest::UnregistrationRequest(
const GURL& registration_url,
const RequestInfo& request_info,
std::unique_ptr<CustomRequestHandler> custom_request_handler,
const net::BackoffEntry::Policy& backoff_policy,
UnregistrationCallback callback,
int max_retry_count,
scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory,
scoped_refptr<base::SequencedTaskRunner> io_task_runner,
GCMStatsRecorder* recorder,
const std::string& source_to_record)
: callback_(std::move(callback)),
request_info_(request_info),
custom_request_handler_(std::move(custom_request_handler)),
registration_url_(registration_url),
backoff_entry_(&backoff_policy),
url_loader_factory_(std::move(url_loader_factory)),
retries_left_(max_retry_count),
io_task_runner_(io_task_runner),
recorder_(recorder),
source_to_record_(source_to_record) {
DCHECK(io_task_runner_);
DCHECK_GE(max_retry_count, 0);
}
UnregistrationRequest::~UnregistrationRequest() {}
void UnregistrationRequest::Start() {
DCHECK(!callback_.is_null());
DCHECK(!url_loader_.get());
net::NetworkTrafficAnnotationTag traffic_annotation =
net::DefineNetworkTrafficAnnotation("gcm_unregistration", R"(
semantics {
sender: "GCM Driver"
description:
"Chromium interacts with Google Cloud Messaging to receive push "
"messages for various browser features, as well as on behalf of "
"websites and extensions. This requests Google Cloud Messaging to "
"invalidate the included registration so that it can no longer be "
"used to distribute messages to Chromium."
trigger:
"Immediately after a feature, website or extension removes a "
"registration they previously created with the GCM Driver."
data:
"The profile-bound Android ID and associated secret, and the "
"identifiers for the feature, website or extension that is "
"removing the registration."
destination: GOOGLE_OWNED_SERVICE
}
policy {
cookies_allowed: NO
setting:
"Support for interacting with Google Cloud Messaging is enabled by "
"default, and there is no configuration option to completely "
"disable it."
policy_exception_justification:
"Not implemented, considered not useful."
})");
auto request = std::make_unique<network::ResourceRequest>();
request->url = registration_url_;
request->method = "POST";
request->credentials_mode = network::mojom::CredentialsMode::kOmit;
BuildRequestHeaders(&request->headers);
std::string body;
BuildRequestBody(&body);
DVLOG(1) << "Unregistration request: " << body;
url_loader_ =
network::SimpleURLLoader::Create(std::move(request), traffic_annotation);
url_loader_->AttachStringForUpload(body, kRequestContentType);
DVLOG(1) << "Performing unregistration for: " << request_info_.app_id();
recorder_->RecordUnregistrationSent(request_info_.app_id(),
source_to_record_);
url_loader_->SetAllowHttpErrorResults(true);
url_loader_->DownloadToStringOfUnboundedSizeUntilCrashAndDie(
url_loader_factory_.get(),
base::BindOnce(&UnregistrationRequest::OnURLLoadComplete,
base::Unretained(this), url_loader_.get()));
}
void UnregistrationRequest::BuildRequestHeaders(
net::HttpRequestHeaders* headers) {
headers->SetHeader(net::HttpRequestHeaders::kAuthorization,
std::string(kLoginHeader) + " " +
base::NumberToString(request_info_.android_id) + ":" +
base::NumberToString(request_info_.security_token));
}
void UnregistrationRequest::BuildRequestBody(std::string* body) {
BuildFormEncoding(kCategoryKey, request_info_.category, body);
if (!request_info_.subtype.empty())
BuildFormEncoding(kSubtypeKey, request_info_.subtype, body);
BuildFormEncoding(kDeviceIdKey,
base::NumberToString(request_info_.android_id), body);
BuildFormEncoding(kDeleteKey, kDeleteValue, body);
DCHECK(custom_request_handler_.get());
custom_request_handler_->BuildRequestBody(body);
}
UnregistrationRequest::Status UnregistrationRequest::ParseResponse(
const network::SimpleURLLoader* source,
std::unique_ptr<std::string> body) {
if (!body) {
DVLOG(1) << "Unregistration URL fetching failed.";
return URL_FETCHING_FAILED;
}
std::string response = std::move(*body);
// If we are able to parse a meaningful known error, let's do so. Note that
// some errors will have HTTP_OK response code!
if (response.find(kErrorPrefix) != std::string::npos) {
std::string error = response.substr(response.find(kErrorPrefix) +
base::size(kErrorPrefix) - 1);
DVLOG(1) << "Unregistration response error message: " << error;
return GetStatusFromError(error);
}
// Can't even get any header info.
if (!source->ResponseInfo() || !source->ResponseInfo()->headers) {
DVLOG(1) << "Unregistration HTTP response info or header missing";
return HTTP_NOT_OK;
}
net::HttpStatusCode response_status = static_cast<net::HttpStatusCode>(
source->ResponseInfo()->headers->response_code());
if (response_status != net::HTTP_OK) {
DVLOG(1) << "Unregistration HTTP response code not OK: " << response_status;
if (response_status == net::HTTP_SERVICE_UNAVAILABLE)
return SERVICE_UNAVAILABLE;
if (response_status == net::HTTP_INTERNAL_SERVER_ERROR)
return INTERNAL_SERVER_ERROR;
return HTTP_NOT_OK;
}
DCHECK(custom_request_handler_.get());
return custom_request_handler_->ParseResponse(response);
}
void UnregistrationRequest::RetryWithBackoff() {
DCHECK(io_task_runner_->RunsTasksInCurrentSequence());
DCHECK_GT(retries_left_, 0);
--retries_left_;
url_loader_.reset();
backoff_entry_.InformOfRequest(false);
DVLOG(1) << "Delaying GCM unregistration of app: " << request_info_.app_id()
<< ", for " << backoff_entry_.GetTimeUntilRelease().InMilliseconds()
<< " milliseconds.";
recorder_->RecordUnregistrationRetryDelayed(
request_info_.app_id(), source_to_record_,
backoff_entry_.GetTimeUntilRelease().InMilliseconds(), retries_left_ + 1);
DCHECK(!weak_ptr_factory_.HasWeakPtrs());
io_task_runner_->PostDelayedTask(
FROM_HERE,
base::BindOnce(&UnregistrationRequest::Start,
weak_ptr_factory_.GetWeakPtr()),
backoff_entry_.GetTimeUntilRelease());
}
void UnregistrationRequest::OnURLLoadComplete(
const network::SimpleURLLoader* source,
std::unique_ptr<std::string> body) {
UnregistrationRequest::Status status = ParseResponse(source, std::move(body));
DVLOG(1) << "UnregistrationRequestStatus: " << status;
DCHECK(custom_request_handler_.get());
custom_request_handler_->ReportUMAs(status);
recorder_->RecordUnregistrationResponse(request_info_.app_id(),
source_to_record_, status);
if (ShouldRetryWithStatus(status)) {
if (retries_left_ > 0) {
RetryWithBackoff();
return;
}
status = REACHED_MAX_RETRIES;
recorder_->RecordUnregistrationResponse(request_info_.app_id(),
source_to_record_, status);
DCHECK(custom_request_handler_.get());
custom_request_handler_->ReportUMAs(status);
}
std::move(callback_).Run(status);
}
} // namespace gcm