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// 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 "chrome/browser/ash/certs/system_token_cert_db_initializer.h"
#include <memory>
#include "base/functional/bind.h"
#include "base/functional/callback.h"
#include "base/memory/weak_ptr.h"
#include "base/test/task_environment.h"
#include "base/time/time.h"
#include "chromeos/ash/components/dbus/userdataauth/userdataauth_client.h"
#include "chromeos/ash/components/network/network_cert_loader.h"
#include "chromeos/ash/components/network/system_token_cert_db_storage_test_util.h"
#include "chromeos/ash/components/tpm/tpm_token_loader.h"
#include "chromeos/dbus/tpm_manager/tpm_manager_client.h"
#include "content/public/test/browser_task_environment.h"
#include "crypto/nss_util.h"
#include "crypto/scoped_test_system_nss_key_slot.h"
#include "net/cert/nss_cert_database.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace ash {
class SystemTokenCertDbInitializerTest : public testing::Test {
public:
SystemTokenCertDbInitializerTest() {
TPMTokenLoader::InitializeForTest();
UserDataAuthClient::InitializeFake();
SystemTokenCertDbStorage::Initialize();
NetworkCertLoader::Initialize();
chromeos::TpmManagerClient::InitializeFake();
system_token_cert_db_initializer_ =
std::make_unique<SystemTokenCertDBInitializer>();
}
SystemTokenCertDbInitializerTest(
const SystemTokenCertDbInitializerTest& other) = delete;
SystemTokenCertDbInitializerTest& operator=(
const SystemTokenCertDbInitializerTest& other) = delete;
~SystemTokenCertDbInitializerTest() override {
system_token_cert_db_initializer_.reset();
chromeos::TpmManagerClient::Shutdown();
NetworkCertLoader::Shutdown();
SystemTokenCertDbStorage::Shutdown();
UserDataAuthClient::Shutdown();
TPMTokenLoader::Shutdown();
}
protected:
bool InitializeTestSystemSlot() {
test_system_slot_ = std::make_unique<crypto::ScopedTestSystemNSSKeySlot>(
/*simulate_token_loader=*/true);
return test_system_slot_->ConstructedSuccessfully();
}
SystemTokenCertDBInitializer* system_token_cert_db_initializer() {
return system_token_cert_db_initializer_.get();
}
base::test::TaskEnvironment* task_environment() { return &task_environment_; }
private:
content::BrowserTaskEnvironment task_environment_{
base::test::TaskEnvironment::TimeSource::MOCK_TIME};
std::unique_ptr<SystemTokenCertDBInitializer>
system_token_cert_db_initializer_;
std::unique_ptr<crypto::ScopedTestSystemNSSKeySlot> test_system_slot_;
};
// Tests that the system token certificate database will be returned
// successfully by SystemTokenCertDbInitializer if it was available in less than
// 5 minutes after being requested, and the system slot uses software fallback
// when it's allowed and TPM is disabled.
TEST_F(SystemTokenCertDbInitializerTest, GetDatabaseSuccessSoftwareFallback) {
chromeos::TpmManagerClient::Get()
->GetTestInterface()
->mutable_nonsensitive_status_reply()
->set_is_enabled(false);
chromeos::TpmManagerClient::Get()
->GetTestInterface()
->mutable_nonsensitive_status_reply()
->set_is_owned(false);
system_token_cert_db_initializer()
->set_is_nss_slots_software_fallback_allowed_for_testing(true);
GetSystemTokenCertDbCallbackWrapper get_system_token_cert_db_callback_wrapper;
SystemTokenCertDbStorage::Get()->GetDatabase(
get_system_token_cert_db_callback_wrapper.GetCallback());
EXPECT_FALSE(get_system_token_cert_db_callback_wrapper.IsCallbackCalled());
// Check that after 1 minute, SystemTokenCertDBInitializer is still waiting
// for the system token slot to be initialized and the DB retrieval hasn't
// timed out yet.
const auto kOneMinuteDelay = base::Minutes(1);
EXPECT_LT(kOneMinuteDelay,
SystemTokenCertDBInitializer::kMaxCertDbRetrievalDelay);
task_environment()->FastForwardBy(kOneMinuteDelay);
EXPECT_FALSE(get_system_token_cert_db_callback_wrapper.IsCallbackCalled());
EXPECT_TRUE(InitializeTestSystemSlot());
get_system_token_cert_db_callback_wrapper.Wait();
EXPECT_TRUE(get_system_token_cert_db_callback_wrapper.IsCallbackCalled());
EXPECT_TRUE(
get_system_token_cert_db_callback_wrapper.IsDbRetrievalSucceeded());
}
// Tests that the system token certificate database will be not returned
// successfully by SystemTokenCertDbInitializer if TPM is disabled and system
// slot software fallback is not allowed.
TEST_F(SystemTokenCertDbInitializerTest, GetDatabaseFailureDisabledTPM) {
chromeos::TpmManagerClient::Get()
->GetTestInterface()
->mutable_nonsensitive_status_reply()
->set_is_enabled(false);
chromeos::TpmManagerClient::Get()
->GetTestInterface()
->mutable_nonsensitive_status_reply()
->set_is_owned(false);
system_token_cert_db_initializer()
->set_is_nss_slots_software_fallback_allowed_for_testing(false);
GetSystemTokenCertDbCallbackWrapper get_system_token_cert_db_callback_wrapper;
SystemTokenCertDbStorage::Get()->GetDatabase(
get_system_token_cert_db_callback_wrapper.GetCallback());
EXPECT_FALSE(get_system_token_cert_db_callback_wrapper.IsCallbackCalled());
// Check that after 1 minute, SystemTokenCertDBInitializer is still waiting
// for the system token slot to be initialized and the DB retrieval hasn't
// timed out yet.
const auto kOneMinuteDelay = base::Minutes(1);
EXPECT_LT(kOneMinuteDelay,
SystemTokenCertDBInitializer::kMaxCertDbRetrievalDelay);
task_environment()->FastForwardBy(kOneMinuteDelay);
EXPECT_FALSE(get_system_token_cert_db_callback_wrapper.IsCallbackCalled());
EXPECT_TRUE(InitializeTestSystemSlot());
get_system_token_cert_db_callback_wrapper.Wait();
EXPECT_TRUE(get_system_token_cert_db_callback_wrapper.IsCallbackCalled());
EXPECT_FALSE(
get_system_token_cert_db_callback_wrapper.IsDbRetrievalSucceeded());
}
} // namespace ash
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