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// Copyright 2023 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_based_engine.h"
#include <utility>
#include "base/check.h"
#include "base/logging.h"
#include "chromeos/ash/components/login/auth/public/user_context.h"
#include "chromeos/ash/components/osauth/public/common_types.h"
#include "chromeos/ash/components/osauth/public/cryptohome_core.h"
namespace ash {
CryptohomeBasedEngine::CryptohomeBasedEngine(CryptohomeCore& core,
AshAuthFactor factor)
: core_(&core), factor_(factor) {}
CryptohomeBasedEngine::~CryptohomeBasedEngine() = default;
AshAuthFactor CryptohomeBasedEngine::GetFactor() const {
return factor_;
}
void CryptohomeBasedEngine::InitializeCommon(CommonInitCallback callback) {
core_->WaitForService(
base::BindOnce(&CryptohomeBasedEngine::OnCryptohomeReady,
weak_factory_.GetWeakPtr(), std::move(callback)));
}
void CryptohomeBasedEngine::OnCryptohomeReady(CommonInitCallback callback,
bool service_available) {
if (!service_available) {
LOG(ERROR) << "cryptohomed not started, Factor "
<< static_cast<int>(GetFactor()) << " is not available";
return;
}
std::move(callback).Run(GetFactor());
}
void CryptohomeBasedEngine::ShutdownCommon(ShutdownCallback callback) {
std::move(callback).Run(GetFactor());
}
void CryptohomeBasedEngine::StartAuthFlow(const AccountId& account,
AuthPurpose purpose,
FactorEngineObserver* observer) {
observer_ = observer;
usage_allowed_ = UsageAllowed::kDisabled;
core_->StartAuthSession({account, purpose}, this);
}
void CryptohomeBasedEngine::OnCryptohomeAuthSessionStarted() {
key_ref_ = LookUpFactor(*core_->GetCurrentContext());
observer_->OnFactorPresenceChecked(GetFactor(), key_ref_.has_value());
}
void CryptohomeBasedEngine::OnAuthSessionStartFailure() {
observer_->OnCriticalError(GetFactor());
}
void CryptohomeBasedEngine::UpdateObserver(FactorEngineObserver* observer) {
observer_ = observer;
}
void CryptohomeBasedEngine::CleanUp(CleanupCallback callback) {
// By default, the cleanup phase is no-op because the majority
// of the auth factors do not need to do anything for cleaning up.
// Simply run the callback with the factor type to indicate
// the end of clean-up.
std::move(callback).Run(GetFactor());
}
void CryptohomeBasedEngine::StopAuthFlow(ShutdownCallback callback) {
CHECK(shutdown_callback_.is_null());
shutdown_callback_ = std::move(callback);
observer_ = nullptr;
// Note: With FakeUserDataAuthClient next call might result in
// shutdown callback being called synchronously (and `this` being deleted).
core_->EndAuthSession(this);
}
AuthProofToken CryptohomeBasedEngine::StoreAuthenticationContext() {
return core_->StoreAuthenticationContext();
}
void CryptohomeBasedEngine::OnCryptohomeAuthSessionFinished() {
CHECK(!shutdown_callback_.is_null());
std::move(shutdown_callback_).Run(GetFactor());
}
void CryptohomeBasedEngine::SetUsageAllowed(UsageAllowed usage) {
usage_allowed_ = usage;
}
} // namespace ash
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