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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif
#include "chromeos/ash/components/dbus/userdataauth/fake_cryptohome_misc_client.h"
#include "base/location.h"
#include "base/notreached.h"
#include "base/task/single_thread_task_runner.h"
#include "chromeos/ash/components/cryptohome/error_util.h"
#include "chromeos/ash/components/dbus/userdataauth/userdataauth_client.h"
namespace ash {
namespace {
// Used to track the fake instance, mirrors the instance in the base class.
FakeCryptohomeMiscClient* g_instance = nullptr;
} // namespace
FakeCryptohomeMiscClient::FakeCryptohomeMiscClient() {
DCHECK(!g_instance);
g_instance = this;
}
FakeCryptohomeMiscClient::~FakeCryptohomeMiscClient() {
DCHECK_EQ(this, g_instance);
g_instance = nullptr;
}
// static
FakeCryptohomeMiscClient* FakeCryptohomeMiscClient::Get() {
return g_instance;
}
void FakeCryptohomeMiscClient::GetSystemSalt(
const ::user_data_auth::GetSystemSaltRequest& request,
GetSystemSaltCallback callback) {
::user_data_auth::GetSystemSaltReply reply;
std::string salt(system_salt_.begin(), system_salt_.end());
reply.set_salt(salt);
ReturnProtobufMethodCallback(reply, std::move(callback));
}
void FakeCryptohomeMiscClient::GetSanitizedUsername(
const ::user_data_auth::GetSanitizedUsernameRequest& request,
GetSanitizedUsernameCallback callback) {
std::optional<::user_data_auth::GetSanitizedUsernameReply> reply;
reply = BlockingGetSanitizedUsername(request);
ReturnProtobufMethodCallback(*reply, std::move(callback));
}
void FakeCryptohomeMiscClient::GetLoginStatus(
const ::user_data_auth::GetLoginStatusRequest& request,
GetLoginStatusCallback callback) {
::user_data_auth::GetLoginStatusReply reply;
reply.set_owner_user_exists(false);
reply.set_is_locked_to_single_user(false);
ReturnProtobufMethodCallback(reply, std::move(callback));
}
void FakeCryptohomeMiscClient::LockToSingleUserMountUntilReboot(
const ::user_data_auth::LockToSingleUserMountUntilRebootRequest& request,
LockToSingleUserMountUntilRebootCallback callback) {
::user_data_auth::LockToSingleUserMountUntilRebootReply reply;
if (cryptohome_error_ == ::user_data_auth::CRYPTOHOME_ERROR_NOT_SET) {
reply.set_error(::user_data_auth::CRYPTOHOME_ERROR_NOT_SET);
is_device_locked_to_single_user_ = true;
} else {
reply.set_error(::user_data_auth::CryptohomeErrorCode::
CRYPTOHOME_ERROR_FAILED_TO_EXTEND_PCR);
}
ReturnProtobufMethodCallback(reply, std::move(callback));
}
void FakeCryptohomeMiscClient::GetRsuDeviceId(
const ::user_data_auth::GetRsuDeviceIdRequest& request,
GetRsuDeviceIdCallback callback) {
::user_data_auth::GetRsuDeviceIdReply reply;
reply.set_rsu_device_id(rsu_device_id_);
ReturnProtobufMethodCallback(reply, std::move(callback));
}
std::optional<::user_data_auth::GetSanitizedUsernameReply>
FakeCryptohomeMiscClient::BlockingGetSanitizedUsername(
const ::user_data_auth::GetSanitizedUsernameRequest& request) {
user_data_auth::GetSanitizedUsernameReply reply;
if (!service_is_available_) {
reply.clear_sanitized_username();
} else {
cryptohome::AccountIdentifier account;
account.set_account_id(request.username());
reply.set_sanitized_username(
UserDataAuthClient::GetStubSanitizedUsername(account));
}
return reply;
}
void FakeCryptohomeMiscClient::WaitForServiceToBeAvailable(
chromeos::WaitForServiceToBeAvailableCallback callback) {
if (service_is_available_ || service_reported_not_available_) {
base::SingleThreadTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE, base::BindOnce(std::move(callback), service_is_available_));
} else {
pending_wait_for_service_to_be_available_callbacks_.push_back(
std::move(callback));
}
}
void FakeCryptohomeMiscClient::SetServiceIsAvailable(bool is_available) {
service_is_available_ = is_available;
if (!is_available) {
return;
}
std::vector<chromeos::WaitForServiceToBeAvailableCallback> callbacks;
callbacks.swap(pending_wait_for_service_to_be_available_callbacks_);
for (auto& callback : callbacks) {
std::move(callback).Run(true);
}
}
void FakeCryptohomeMiscClient::ReportServiceIsNotAvailable() {
DCHECK(!service_is_available_);
service_reported_not_available_ = true;
std::vector<chromeos::WaitForServiceToBeAvailableCallback> callbacks;
callbacks.swap(pending_wait_for_service_to_be_available_callbacks_);
for (auto& callback : callbacks) {
std::move(callback).Run(false);
}
}
template <typename ReplyType>
void FakeCryptohomeMiscClient::ReturnProtobufMethodCallback(
const ReplyType& reply,
chromeos::DBusMethodCallback<ReplyType> callback) {
base::SingleThreadTaskRunner::GetCurrentDefault()->PostTask(
FROM_HERE, base::BindOnce(std::move(callback), reply));
}
// static
std::vector<uint8_t> FakeCryptohomeMiscClient::GetStubSystemSalt() {
const char kStubSystemSalt[] = "stub_system_salt";
return std::vector<uint8_t>(kStubSystemSalt,
kStubSystemSalt + std::size(kStubSystemSalt) - 1);
}
} // namespace ash
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