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// Copyright 2024 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/net/network_annotation_monitor.h"
#include "base/test/metrics/histogram_tester.h"
#include "chrome/browser/browser_features.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/net/system_network_context_manager.h"
#include "chrome/browser/policy/policy_test_utils.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/test/base/in_process_browser_test.h"
#include "chromeos/dbus/regmon/regmon_client.h"
#include "components/policy/policy_constants.h"
#include "content/public/browser/network_service_instance.h"
#include "content/public/browser/storage_partition.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/simple_url_loader_test_helper.h"
#include "net/traffic_annotation/network_traffic_annotation_test_helper.h"
#include "services/network/public/cpp/resource_request.h"
#include "services/network/public/mojom/network_service.mojom.h"
namespace {
enum class TestCase {
kEnabled,
kDisabled,
};
// Network annotation that can trigger a violation.
constexpr net::NetworkTrafficAnnotationTag kTestDisabledAnnotation =
net::DefineNetworkTrafficAnnotation("autofill_query", "");
// Policy that controls the above annotation. When set to false, any occurrences
// of the above annotation should trigger a violation.
constexpr char kTestPolicy[] = "PasswordManagerEnabled";
class NetworkAnnotationMonitorBrowserTest
: public policy::PolicyTest,
public ::testing::WithParamInterface<TestCase> {
public:
NetworkAnnotationMonitorBrowserTest() {
if (GetParam() == TestCase::kEnabled) {
feature_list_.InitAndEnableFeature(
features::kNetworkAnnotationMonitoring);
} else {
feature_list_.InitAndDisableFeature(
features::kNetworkAnnotationMonitoring);
}
}
void SendFakeNetworkRequest(net::NetworkTrafficAnnotationTag annotation) {
auto request = std::make_unique<network::ResourceRequest>();
content::SimpleURLLoaderTestHelper simple_loader_helper;
std::unique_ptr<network::SimpleURLLoader> simple_loader =
network::SimpleURLLoader::Create(std::move(request), annotation);
simple_loader->DownloadToStringOfUnboundedSizeUntilCrashAndDie(
browser()
->profile()
->GetDefaultStoragePartition()
->GetURLLoaderFactoryForBrowserProcess()
.get(),
simple_loader_helper.GetCallback());
simple_loader_helper.WaitForCallback();
}
private:
base::test::ScopedFeatureList feature_list_;
};
IN_PROC_BROWSER_TEST_P(NetworkAnnotationMonitorBrowserTest, FeatureTest) {
policy::PolicyMap policies;
SetPolicy(&policies, kTestPolicy, base::Value(false));
provider_.UpdateChromePolicy(policies);
// Send network request with arbitrary network annotation that will never
// trigger a violation.
SendFakeNetworkRequest(TRAFFIC_ANNOTATION_FOR_TESTS);
// Send network request with a network annotation that will trigger a
// violation.
SendFakeNetworkRequest(kTestDisabledAnnotation);
g_browser_process->system_network_context_manager()
->FlushNetworkAnnotationMonitorForTesting();
// Disabled hash codes should trigger a violation only if the feature is
// enabled.
chromeos::RegmonClient* regmon_client = chromeos::RegmonClient::Get();
if (GetParam() == TestCase::kEnabled) {
std::list<int32_t> expected_hash_codes{
kTestDisabledAnnotation.unique_id_hash_code};
EXPECT_EQ(regmon_client->GetTestInterface()->GetReportedHashCodes(),
expected_hash_codes);
} else {
std::list<int32_t> expected_hash_codes{};
EXPECT_EQ(regmon_client->GetTestInterface()->GetReportedHashCodes(),
expected_hash_codes);
}
}
INSTANTIATE_TEST_SUITE_P(All,
NetworkAnnotationMonitorBrowserTest,
::testing::Values(TestCase::kDisabled,
TestCase::kEnabled));
} // namespace
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