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// Copyright 2022 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/ash/dbus/dlp_files_policy_service_provider.h"
#include <memory>
#include "base/test/gmock_callback_support.h"
#include "chrome/browser/ash/policy/dlp/dlp_files_controller_ash.h"
#include "chrome/browser/ash/policy/dlp/test/mock_dlp_files_controller_ash.h"
#include "chrome/browser/chromeos/policy/dlp/dlp_files_controller.h"
#include "chrome/browser/chromeos/policy/dlp/dlp_files_utils.h"
#include "chrome/browser/chromeos/policy/dlp/test/dlp_files_test_base.h"
#include "chrome/browser/chromeos/policy/dlp/test/mock_dlp_rules_manager.h"
#include "chrome/test/base/testing_profile.h"
#include "chromeos/ash/components/dbus/services/service_provider_test_helper.h"
#include "chromeos/dbus/dlp/dlp_service.pb.h"
#include "dbus/object_path.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/cros_system_api/dbus/dlp/dbus-constants.h"
namespace ash {
namespace {
constexpr char kExampleUrl[] = "https://example.com";
constexpr char kExampleUrl2[] = "https://example2.com";
constexpr ino_t kInode = 0;
constexpr char kFilePath[] = "test.txt";
using FileDaemonInfo = policy::DlpFilesController::FileDaemonInfo;
} // namespace
class DlpFilesPolicyServiceProviderTest
: public policy::DlpFilesTestBase,
public ::testing::WithParamInterface<policy::DlpRulesManager::Level> {
protected:
DlpFilesPolicyServiceProviderTest()
: dlp_policy_service_(std::make_unique<DlpFilesPolicyServiceProvider>()) {
}
DlpFilesPolicyServiceProviderTest(const DlpFilesPolicyServiceProviderTest&) =
delete;
DlpFilesPolicyServiceProviderTest& operator=(
const DlpFilesPolicyServiceProviderTest&) = delete;
~DlpFilesPolicyServiceProviderTest() override {
dbus_service_test_helper_.TearDown();
}
void SetUp() override {
DlpFilesTestBase::SetUp();
profile_ = TestingProfile::Builder().Build();
EXPECT_CALL(*rules_manager(), IsFilesPolicyEnabled)
.WillRepeatedly(testing::Return(true));
EXPECT_CALL(*rules_manager(), GetReportingManager())
.WillRepeatedly(::testing::Return(nullptr));
files_controller_ = std::make_unique<
testing::StrictMock<policy::MockDlpFilesControllerAsh>>(
*rules_manager(), profile_.get());
EXPECT_CALL(*rules_manager(), GetDlpFilesController())
.WillRepeatedly(::testing::Return(files_controller_.get()));
}
template <class ResponseProtoType>
std::optional<ResponseProtoType> CallDlpFilesPolicyServiceMethod(
const char* method_name,
const google::protobuf::MessageLite& request) {
dbus::MethodCall method_call(dlp::kDlpFilesPolicyServiceInterface,
method_name);
dbus::MessageWriter writer(&method_call);
writer.AppendProtoAsArrayOfBytes(request);
dbus_service_test_helper_.SetUp(
dlp::kDlpFilesPolicyServiceName,
dbus::ObjectPath(dlp::kDlpFilesPolicyServicePath),
dlp::kDlpFilesPolicyServiceInterface, method_name,
dlp_policy_service_.get());
std::unique_ptr<dbus::Response> dbus_response =
dbus_service_test_helper_.CallMethod(&method_call);
if (!dbus_response)
return {};
dbus::MessageReader reader(dbus_response.get());
ResponseProtoType response;
if (!reader.PopArrayOfBytesAsProto(&response))
return {};
return response;
}
std::unique_ptr<TestingProfile> profile_;
std::unique_ptr<DlpFilesPolicyServiceProvider> dlp_policy_service_;
ServiceProviderTestHelper dbus_service_test_helper_;
std::unique_ptr<testing::StrictMock<policy::MockDlpFilesControllerAsh>>
files_controller_;
};
INSTANTIATE_TEST_SUITE_P(
DlpFilesPolicyServiceProvider,
DlpFilesPolicyServiceProviderTest,
::testing::Values(policy::DlpRulesManager::Level::kAllow,
policy::DlpRulesManager::Level::kBlock));
TEST_P(DlpFilesPolicyServiceProviderTest, IsDlpPolicyMatched) {
dlp::IsDlpPolicyMatchedRequest request;
request.mutable_file_metadata()->set_inode(kInode);
request.mutable_file_metadata()->set_path(kFilePath);
request.mutable_file_metadata()->set_source_url(kExampleUrl);
policy::DlpRulesManager::Level level = GetParam();
bool is_restricted = level == policy::DlpRulesManager::Level::kBlock;
FileDaemonInfo file_info(
/*inode=*/kInode,
/*crtime=*/0,
/*path=*/base::FilePath(),
/*source_url=*/kExampleUrl,
/*referrer_url=*/"");
EXPECT_CALL(*files_controller_.get(), IsDlpPolicyMatched(file_info))
.WillOnce(testing::Return(is_restricted));
auto response =
CallDlpFilesPolicyServiceMethod<dlp::IsDlpPolicyMatchedResponse>(
dlp::kDlpFilesPolicyServiceIsDlpPolicyMatchedMethod, request);
ASSERT_TRUE(response.has_value());
ASSERT_TRUE(response->has_restricted());
EXPECT_EQ(response->restricted(), (is_restricted));
}
TEST_P(DlpFilesPolicyServiceProviderTest, IsFilesTransferRestricted) {
dlp::IsFilesTransferRestrictedRequest request;
request.set_destination_url(kExampleUrl);
auto* file = request.add_transferred_files();
file->set_source_url(kExampleUrl2);
file->set_inode(kInode);
file->set_path(kFilePath);
request.set_file_action(::dlp::FileAction::OPEN);
request.set_io_task_id(1234);
policy::DlpRulesManager::Level level = GetParam();
auto restriction_level = (level == policy::DlpRulesManager::Level::kBlock)
? ::dlp::RestrictionLevel::LEVEL_BLOCK
: ::dlp::RestrictionLevel::LEVEL_ALLOW;
FileDaemonInfo file_info(
/*inode=*/kInode,
/*crtime=*/0,
/*path=*/base::FilePath(kFilePath),
/*source_url=*/kExampleUrl2,
/*referrer_url=*/"");
EXPECT_CALL(
*files_controller_.get(),
IsFilesTransferRestricted(
std::optional<file_manager::io_task::IOTaskId>(1234),
std::vector<FileDaemonInfo>{file_info},
policy::DlpFileDestination(GURL(kExampleUrl)),
policy::dlp::FileAction::kOpen, base::test::IsNotNullCallback()))
.WillOnce(testing::WithArg<4>(
[&restriction_level, &file_info](
policy::DlpFilesControllerAsh::IsFilesTransferRestrictedCallback
result_callback) {
std::vector<std::pair<FileDaemonInfo, ::dlp::RestrictionLevel>>
result;
result.push_back(std::make_pair(file_info, restriction_level));
std::move(result_callback).Run(std::move(result));
}));
auto response =
CallDlpFilesPolicyServiceMethod<dlp::IsFilesTransferRestrictedResponse>(
dlp::kDlpFilesPolicyServiceIsFilesTransferRestrictedMethod, request);
ASSERT_TRUE(response.has_value());
ASSERT_EQ(response->files_restrictions().size(), 1);
EXPECT_EQ(response->files_restrictions()[0].restriction_level(),
restriction_level);
}
TEST_P(DlpFilesPolicyServiceProviderTest, IsFilesTransferRestrictedSystem) {
dlp::IsFilesTransferRestrictedRequest request;
request.set_destination_component(::dlp::DlpComponent::SYSTEM);
auto* file = request.add_transferred_files();
file->set_source_url(kExampleUrl2);
file->set_inode(kInode);
file->set_path(kFilePath);
request.set_file_action(::dlp::FileAction::COPY);
request.set_io_task_id(1234);
auto response =
CallDlpFilesPolicyServiceMethod<dlp::IsFilesTransferRestrictedResponse>(
dlp::kDlpFilesPolicyServiceIsFilesTransferRestrictedMethod, request);
ASSERT_TRUE(response.has_value());
ASSERT_EQ(response->files_restrictions().size(), 1);
EXPECT_EQ(dlp::RestrictionLevel::LEVEL_ALLOW,
response->files_restrictions(0).restriction_level());
}
} // namespace ash
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