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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 "chromeos/ash/components/osauth/impl/engines/cryptohome_fingerprint_engine.h"
#include "ash/constants/ash_features.h"
#include "base/memory/raw_ptr.h"
#include "base/test/scoped_feature_list.h"
#include "base/test/task_environment.h"
#include "base/test/test_future.h"
#include "chromeos/ash/components/dbus/cryptohome/UserDataAuth.pb.h"
#include "chromeos/ash/components/dbus/userdataauth/mock_userdataauth_client.h"
#include "chromeos/ash/components/osauth/impl/cryptohome_core_impl.h"
#include "chromeos/ash/components/osauth/public/auth_factor_engine.h"
#include "chromeos/ash/components/osauth/public/common_types.h"
#include "chromeos/ash/components/osauth/test_support/engine_test_util.h"
#include "chromeos/ash/components/osauth/test_support/mock_auth_factor_engine.h"
#include "components/account_id/account_id.h"
#include "components/prefs/pref_registry_simple.h"
#include "components/prefs/testing_pref_service.h"
#include "components/user_manager/fake_user_manager.h"
#include "google_apis/gaia/gaia_id.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace ash {
namespace {
using ::base::test::TestFuture;
using ::testing::_;
using ::testing::Eq;
using ::testing::InSequence;
using ::testing::IsFalse;
using ::testing::IsTrue;
class CryptohomeFingerprintEngineTest : public EngineTestBase {
protected:
CryptohomeFingerprintEngineTest()
: engine_impl_(core_, &prefs_), engine_(&engine_impl_) {
scoped_feature_list_.InitWithFeatures(
/*enabled_features=*/{features::kFingerprintAuthFactor},
/*disabled_features=*/{});
}
// Define basic expectations for StartAuthSession and ListAuthFactors calls.
// These will create a minimal session and indicate that only one fingerprint
// auth factor is available.
void ExpectStartAndList() {
EXPECT_CALL(mock_udac_, StartAuthSession(_, _))
.WillOnce([](auto&&, auto&& callback) {
user_data_auth::StartAuthSessionReply reply;
reply.set_user_exists(true);
reply.set_auth_session_id("fake id");
auto* factor = reply.add_configured_auth_factors_with_status();
factor->mutable_auth_factor()->set_type(
user_data_auth::AUTH_FACTOR_TYPE_FINGERPRINT);
factor->mutable_auth_factor()->set_label("fingerprint");
factor->mutable_auth_factor()->mutable_fingerprint_metadata();
factor->mutable_status_info()->set_time_available_in(0);
factor->mutable_status_info()->set_time_expiring_in(
std::numeric_limits<uint64_t>::max());
std::move(callback).Run(reply);
});
EXPECT_CALL(mock_udac_, ListAuthFactors(_, _))
.WillOnce([](auto&&, auto&& callback) {
user_data_auth::ListAuthFactorsReply reply;
auto* factor = reply.add_configured_auth_factors();
factor->set_type(user_data_auth::AUTH_FACTOR_TYPE_FINGERPRINT);
factor->set_label("fingerprint");
factor->mutable_fingerprint_metadata();
reply.add_supported_auth_factors(
user_data_auth::AUTH_FACTOR_TYPE_FINGERPRINT);
std::move(callback).Run(reply);
});
}
// The engine under test. The `engine_` pointer variable provides easy access
// to the public engine API and `engine_impl_` can be used to access the
// engine-specific functions.
CryptohomeFingerprintEngine engine_impl_;
raw_ptr<AuthFactorEngine> engine_;
};
TEST_F(CryptohomeFingerprintEngineTest, GetFactor) {
EXPECT_THAT(engine_->GetFactor(), Eq(AshAuthFactor::kFingerprint));
}
TEST_F(CryptohomeFingerprintEngineTest, StandardSuccessfulAuthenticate) {
AccountId id =
AccountId::FromUserEmailGaiaId("test@example.com", GaiaId("fakegaia"));
user_manager_.AddGaiaUser(id, user_manager::UserType::kRegular);
// Initialize the engine.
TestFuture<AshAuthFactor> init_common;
engine_->InitializeCommon(init_common.GetCallback());
EXPECT_THAT(init_common.Get(), Eq(AshAuthFactor::kFingerprint));
// Start the auth flow and enable use of the engine.
MockAuthFactorEngineObserver observer;
ExpectStartAndList();
EXPECT_CALL(mock_udac_, PrepareAuthFactor(_, _))
.WillOnce([](auto&&, auto&& callback) {
user_data_auth::PrepareAuthFactorReply reply;
std::move(callback).Run(reply);
});
EXPECT_CALL(observer,
OnFactorPresenceChecked(AshAuthFactor::kFingerprint, true));
engine_->StartAuthFlow(id, AuthPurpose::kScreenUnlock, &observer);
engine_->SetUsageAllowed(AuthFactorEngine::UsageAllowed::kEnabled);
task_environment_.RunUntilIdle();
// Run the attempt, expect success.
EXPECT_CALL(mock_udac_, AuthenticateAuthFactor(_, _))
.WillOnce([](auto&&, auto&& callback) {
user_data_auth::AuthenticateAuthFactorReply reply;
reply.set_error(user_data_auth::CRYPTOHOME_ERROR_NOT_SET);
reply.mutable_auth_properties()->add_authorized_for(
user_data_auth::AUTH_INTENT_VERIFY_ONLY);
std::move(callback).Run(reply);
});
EXPECT_CALL(observer, OnFactorAttempt(AshAuthFactor::kFingerprint));
EXPECT_CALL(observer,
OnFactorAttemptResult(AshAuthFactor::kFingerprint, true));
engine_impl_.PerformFingerprintAttempt();
task_environment_.RunUntilIdle();
}
TEST_F(CryptohomeFingerprintEngineTest, StandardFailedAuthenticate) {
AccountId id =
AccountId::FromUserEmailGaiaId("test@example.com", GaiaId("fakegaia"));
user_manager_.AddGaiaUser(id, user_manager::UserType::kRegular);
// Initialize the engine.
TestFuture<AshAuthFactor> init_common;
engine_->InitializeCommon(init_common.GetCallback());
EXPECT_THAT(init_common.Get(), Eq(AshAuthFactor::kFingerprint));
// Start the auth flow and enable use of the engine.
MockAuthFactorEngineObserver observer;
ExpectStartAndList();
EXPECT_CALL(mock_udac_, PrepareAuthFactor(_, _))
.WillOnce([](auto&&, auto&& callback) {
user_data_auth::PrepareAuthFactorReply reply;
std::move(callback).Run(reply);
});
EXPECT_CALL(observer,
OnFactorPresenceChecked(AshAuthFactor::kFingerprint, true));
engine_->StartAuthFlow(id, AuthPurpose::kScreenUnlock, &observer);
engine_->SetUsageAllowed(AuthFactorEngine::UsageAllowed::kEnabled);
task_environment_.RunUntilIdle();
// Run the attempt, expect failure.
EXPECT_CALL(mock_udac_, AuthenticateAuthFactor(_, _))
.WillOnce([](auto&&, auto&& callback) {
user_data_auth::AuthenticateAuthFactorReply reply;
reply.set_error(
user_data_auth::CRYPTOHOME_ERROR_FINGERPRINT_RETRY_REQUIRED);
std::move(callback).Run(reply);
});
EXPECT_CALL(observer, OnFactorAttempt(AshAuthFactor::kFingerprint));
EXPECT_CALL(observer,
OnFactorAttemptResult(AshAuthFactor::kFingerprint, false));
engine_impl_.PerformFingerprintAttempt();
task_environment_.RunUntilIdle();
}
} // namespace
} // namespace ash
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