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content / browser / attribution_reporting / attribution_report_network_sender.cc [blame]
// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/attribution_reporting/attribution_report_network_sender.h"
#include <optional>
#include <string>
#include <string_view>
#include <utility>
#include "base/check.h"
#include "base/functional/bind.h"
#include "base/functional/overloaded.h"
#include "base/metrics/histogram_functions.h"
#include "base/strings/strcat.h"
#include "base/values.h"
#include "components/attribution_reporting/suitable_origin.h"
#include "content/browser/attribution_reporting/aggregatable_debug_report.h"
#include "content/browser/attribution_reporting/attribution_debug_report.h"
#include "content/browser/attribution_reporting/attribution_report.h"
#include "content/browser/attribution_reporting/attribution_utils.h"
#include "content/browser/attribution_reporting/send_result.h"
#include "net/base/isolation_info.h"
#include "net/base/load_flags.h"
#include "net/base/net_errors.h"
#include "net/http/http_request_headers.h"
#include "net/http/http_response_headers.h"
#include "net/traffic_annotation/network_traffic_annotation.h"
#include "services/network/public/cpp/resource_request.h"
#include "services/network/public/cpp/resource_request_body.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/fetch_api.mojom-shared.h"
#include "third_party/abseil-cpp/absl/types/variant.h"
#include "url/gurl.h"
#include "url/origin.h"
namespace content {
namespace {
// These values are persisted to logs. Entries should not be renumbered and
// numeric values should never be reused.
//
// LINT.IfChange(Status)
enum class Status {
kOk = 0,
// Corresponds to a non-zero NET_ERROR.
kInternalError = 1,
// Corresponds to a non-200 HTTP response code from the reporting endpoint.
kExternalError = 2,
kMaxValue = kExternalError
};
// LINT.ThenChange(//tools/metrics/histograms/metadata/attribution_reporting/enums.xml:ConversionReportStatus)
template <typename T>
void NetworkHistogram(std::string_view suffix,
void (*hist_func)(const std::string&, T value),
bool is_debug_report,
std::optional<bool> has_trigger_context_id,
T value) {
if (is_debug_report) {
hist_func(base::StrCat({"Conversions.DebugReport.", suffix}), value);
} else {
hist_func(base::StrCat({"Conversions.", suffix}), value);
if (has_trigger_context_id.has_value()) {
if (*has_trigger_context_id) {
hist_func(base::StrCat({"Conversions.ContextID.", suffix}), value);
} else {
hist_func(base::StrCat({"Conversions.NoContextID.", suffix}), value);
}
}
}
}
} // namespace
AttributionReportNetworkSender::AttributionReportNetworkSender(
scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory)
: url_loader_factory_(std::move(url_loader_factory)) {
DCHECK(url_loader_factory_);
}
AttributionReportNetworkSender::~AttributionReportNetworkSender() = default;
void AttributionReportNetworkSender::SendReport(
AttributionReport report,
bool is_debug_report,
ReportSentCallback sent_callback) {
GURL url = report.ReportURL(is_debug_report);
std::string body = SerializeAttributionJson(report.ReportBody());
if (!is_debug_report) {
switch (report.GetReportType()) {
case AttributionReport::Type::kEventLevel:
base::UmaHistogramCounts1000(
"Conversions.EventLevelReport.ReportBodySize", body.size());
break;
case AttributionReport::Type::kAggregatableAttribution:
case AttributionReport::Type::kNullAggregatable:
base::UmaHistogramCounts10000(
"Conversions.AggregatableReport.ReportBodySize", body.size());
break;
}
}
url::Origin origin(report.reporting_origin());
SendReport(std::move(url), std::move(origin), std::move(body),
base::BindOnce(&AttributionReportNetworkSender::OnReportSent,
base::Unretained(this), std::move(report),
is_debug_report, std::move(sent_callback)));
}
void AttributionReportNetworkSender::SendReport(
AttributionDebugReport report,
DebugReportSentCallback callback) {
GURL url(report.ReportUrl());
url::Origin origin(report.reporting_origin());
std::string body = SerializeAttributionJson(report.ReportBody());
SendReport(
std::move(url), std::move(origin), std::move(body),
base::BindOnce(&AttributionReportNetworkSender::OnVerboseDebugReportSent,
base::Unretained(this),
base::BindOnce(std::move(callback), std::move(report))));
}
void AttributionReportNetworkSender::SendReport(
AggregatableDebugReport report,
base::Value::Dict report_body,
AggregatableDebugReportSentCallback callback) {
GURL url(report.ReportUrl());
url::Origin origin(report.reporting_origin());
std::string body = SerializeAttributionJson(report_body);
SendReport(std::move(url), std::move(origin), std::move(body),
base::BindOnce(
&AttributionReportNetworkSender::OnAggregatableDebugReportSent,
base::Unretained(this),
base::BindOnce(std::move(callback), std::move(report),
std::move(report_body))));
}
void AttributionReportNetworkSender::SendReport(GURL url,
url::Origin origin,
std::string body,
UrlLoaderCallback callback) {
auto resource_request = std::make_unique<network::ResourceRequest>();
resource_request->url = std::move(url);
resource_request->method = net::HttpRequestHeaders::kPostMethod;
resource_request->credentials_mode = network::mojom::CredentialsMode::kOmit;
resource_request->mode = network::mojom::RequestMode::kSameOrigin;
resource_request->request_initiator = std::move(origin);
resource_request->load_flags =
net::LOAD_DISABLE_CACHE | net::LOAD_BYPASS_CACHE;
resource_request->trusted_params = network::ResourceRequest::TrustedParams();
resource_request->trusted_params->isolation_info =
net::IsolationInfo::CreateTransient();
net::NetworkTrafficAnnotationTag traffic_annotation =
net::DefineNetworkTrafficAnnotation("conversion_measurement_report", R"(
semantics {
sender: "Attribution Reporting API"
description:
"The Attribution Reporting API supports measurement of clicks and "
"views with event-level and aggregatable reports without using "
"cross-site persistent identifiers like third-party cookies."
trigger:
"When a triggered attribution has become eligible for reporting "
"or when an attribution source or trigger registration has failed "
"and is eligible for error reporting."
data:
"Event-level reports include a high-entropy identifier declared "
"by the site on which the user clicked on or viewed a source and "
"a noisy low-entropy data value declared on the destination site."
"Aggregatable reports include encrypted information generated "
"from both source-side and trigger-side registrations."
"Debug reports include data related to attribution source or "
"trigger registration failures."
destination:OTHER
}
policy {
cookies_allowed: NO
setting:
"This feature can be controlled via the 'Ad measurement' setting "
"in the 'Ad privacy' section of 'Privacy and Security'."
chrome_policy {
PrivacySandboxAdMeasurementEnabled {
PrivacySandboxAdMeasurementEnabled: false
}
}
})");
auto simple_url_loader = network::SimpleURLLoader::Create(
std::move(resource_request), traffic_annotation);
network::SimpleURLLoader* simple_url_loader_ptr = simple_url_loader.get();
auto it = loaders_in_progress_.insert(loaders_in_progress_.begin(),
std::move(simple_url_loader));
simple_url_loader_ptr->SetTimeoutDuration(base::Seconds(30));
simple_url_loader_ptr->AttachStringForUpload(std::move(body),
"application/json");
// Retry once on network change. A network change during DNS resolution
// results in a DNS error rather than a network change error, so retry in
// those cases as well.
int retry_mode = network::SimpleURLLoader::RETRY_ON_NETWORK_CHANGE |
network::SimpleURLLoader::RETRY_ON_NAME_NOT_RESOLVED;
simple_url_loader_ptr->SetRetryOptions(/*max_retries=*/1, retry_mode);
simple_url_loader_ptr->DownloadHeadersOnly(
url_loader_factory_.get(),
base::BindOnce(std::move(callback), std::move(it)));
}
void AttributionReportNetworkSender::OnReportSent(
const AttributionReport& report,
bool is_debug_report,
ReportSentCallback sent_callback,
UrlLoaderList::iterator it,
scoped_refptr<net::HttpResponseHeaders> headers) {
network::SimpleURLLoader* loader = it->get();
// Consider a non-200 HTTP code as a non-internal error.
int net_error = loader->NetError();
bool internal_ok =
net_error == net::OK || net_error == net::ERR_HTTP_RESPONSE_CODE_FAILURE;
int response_code = headers ? headers->response_code() : -1;
bool external_ok = response_code >= 200 && response_code <= 299;
Status status = internal_ok && external_ok ? Status::kOk
: !internal_ok ? Status::kInternalError
: Status::kExternalError;
// Since net errors are always negative and HTTP errors are always positive,
// it is fine to combine these in a single histogram.
int response_or_net_error = internal_ok ? response_code : net_error;
std::optional<bool> retry_succeed =
loader->GetNumRetries() > 0
? std::make_optional<bool>(status == Status::kOk)
: std::nullopt;
std::optional<bool> has_trigger_context_id;
absl::visit(
base::Overloaded{
[&](const AttributionReport::EventLevelData&) {
NetworkHistogram("ReportStatusEventLevel",
&base::UmaHistogramEnumeration, is_debug_report,
has_trigger_context_id, status);
NetworkHistogram("HttpResponseOrNetErrorCodeEventLevel",
&base::UmaHistogramSparse, is_debug_report,
has_trigger_context_id, response_or_net_error);
if (retry_succeed.has_value()) {
NetworkHistogram("ReportRetrySucceedEventLevel",
&base::UmaHistogramBoolean, is_debug_report,
has_trigger_context_id, *retry_succeed);
}
},
[&](const AttributionReport::AggregatableAttributionData& data) {
has_trigger_context_id =
data.common_data.aggregatable_trigger_config
.trigger_context_id()
.has_value();
NetworkHistogram("ReportStatusAggregatable",
&base::UmaHistogramEnumeration, is_debug_report,
has_trigger_context_id, status);
NetworkHistogram("HttpResponseOrNetErrorCodeAggregatable",
&base::UmaHistogramSparse, is_debug_report,
has_trigger_context_id, response_or_net_error);
if (retry_succeed.has_value()) {
NetworkHistogram("ReportRetrySucceedAggregatable",
&base::UmaHistogramBoolean, is_debug_report,
has_trigger_context_id, *retry_succeed);
}
},
[&](const AttributionReport::NullAggregatableData& data) {
has_trigger_context_id =
data.common_data.aggregatable_trigger_config
.trigger_context_id()
.has_value();
NetworkHistogram("ReportStatusAggregatableNull",
&base::UmaHistogramEnumeration, is_debug_report,
has_trigger_context_id, status);
NetworkHistogram("HttpResponseOrNetErrorCodeAggregatableNull",
&base::UmaHistogramSparse, is_debug_report,
has_trigger_context_id, response_or_net_error);
},
},
report.data());
loaders_in_progress_.erase(it);
if (status == Status::kOk) {
std::move(sent_callback)
.Run(report,
SendResult::Sent(SendResult::Sent::Result::kSent, response_code));
} else {
// Retry reports that have not received headers and failed with one of the
// specified error codes. These codes are chosen from the
// "Conversions.Report.HttpResponseOrNetErrorCode" histogram. HTTP errors
// should not be retried to prevent over requesting servers.
bool should_retry =
!headers && (net_error == net::ERR_INTERNET_DISCONNECTED ||
net_error == net::ERR_NAME_NOT_RESOLVED ||
net_error == net::ERR_TIMED_OUT ||
net_error == net::ERR_CONNECTION_TIMED_OUT ||
net_error == net::ERR_CONNECTION_ABORTED ||
net_error == net::ERR_CONNECTION_RESET);
std::move(sent_callback)
.Run(report,
SendResult::Sent(should_retry
? SendResult::Sent::Result::kTransientFailure
: SendResult::Sent::Result::kFailure,
net_error));
}
}
void AttributionReportNetworkSender::OnVerboseDebugReportSent(
base::OnceCallback<void(int status)> callback,
UrlLoaderList::iterator it,
scoped_refptr<net::HttpResponseHeaders> headers) {
// HTTP statuses are positive; network errors are negative.
int status = headers ? headers->response_code() : (*it)->NetError();
// Since net errors are always negative and HTTP errors are always positive,
// it is fine to combine these in a single histogram.
base::UmaHistogramSparse(
"Conversions.VerboseDebugReport.HttpResponseOrNetErrorCode", status);
loaders_in_progress_.erase(it);
std::move(callback).Run(status);
}
void AttributionReportNetworkSender::OnAggregatableDebugReportSent(
base::OnceCallback<void(int status)> callback,
UrlLoaderList::iterator it,
scoped_refptr<net::HttpResponseHeaders> headers) {
// HTTP statuses are positive; network errors are negative.
int status = headers ? headers->response_code() : (*it)->NetError();
// Since net errors are always negative and HTTP errors are always positive,
// it is fine to combine these in a single histogram.
base::UmaHistogramSparse(
"Conversions.AggregatableDebugReport.HttpResponseOrNetErrorCode", status);
loaders_in_progress_.erase(it);
std::move(callback).Run(status);
}
} // namespace content