135 lines
5.2 KiB
C++
135 lines
5.2 KiB
C++
/*
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* Copyright (C) 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <memory>
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#include <mutex>
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#include <random>
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#include <thread>
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#include <unordered_set>
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#include <aidl/android/hardware/biometrics/fingerprint/BnSession.h>
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#include <aidl/android/hardware/biometrics/fingerprint/ISessionCallback.h>
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#include <android-base/unique_fd.h>
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#include "storage.h"
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namespace aidl::android::hardware::biometrics::fingerprint {
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struct Session : public BnSession {
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enum class State {
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IDLE,
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ENROLLING_START,
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ENROLLING_END,
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AUTHENTICATING,
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DETECTING_INTERACTION,
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};
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enum class ErrorCode {
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OK,
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E_HAT_MAC_EMPTY,
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E_HAT_WRONG_CHALLENGE,
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E_INCORRECT_STATE,
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E_ENROLL_FAILED,
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};
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Session(const int32_t sensorId, const int32_t userId,
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std::shared_ptr<ISessionCallback> scb);
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~Session();
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ndk::ScopedAStatus generateChallenge() override;
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ndk::ScopedAStatus revokeChallenge(const int64_t challenge) override;
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ndk::ScopedAStatus enroll(const keymaster::HardwareAuthToken& hat,
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std::shared_ptr<common::ICancellationSignal>* out) override;
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ndk::ScopedAStatus authenticate(const int64_t operationId,
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std::shared_ptr<common::ICancellationSignal>* out) override;
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ndk::ScopedAStatus detectInteraction(
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std::shared_ptr<common::ICancellationSignal>* out) override;
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ndk::ScopedAStatus enumerateEnrollments() override;
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ndk::ScopedAStatus removeEnrollments(const std::vector<int32_t>& enrollmentIds) override;
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ndk::ScopedAStatus getAuthenticatorId() override;
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ndk::ScopedAStatus invalidateAuthenticatorId() override;
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ndk::ScopedAStatus resetLockout(const keymaster::HardwareAuthToken& hat) override;
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ndk::ScopedAStatus close() override;
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int64_t generateInt64();
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ErrorCode validateHat(const keymaster::HardwareAuthToken& hat) const;
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bool sensorListenerFuncImpl();
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void sensorListenerFunc() { while (sensorListenerFuncImpl()) {} }
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void onSenserEventOn(int fid);
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void onSenserEventOff();
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void cancellEnroll();
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void cancellAuthenticate();
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void cancellDetectInteraction();
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ndk::ScopedAStatus onPointerDown(const int32_t /*pointerId*/,
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const int32_t /*x*/, const int32_t /*y*/,
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const float /*minor*/,
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const float /*major*/) override {
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return ndk::ScopedAStatus::ok();
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}
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ndk::ScopedAStatus onPointerUp(const int32_t /*pointerId*/) override {
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return ndk::ScopedAStatus::ok();
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}
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ndk::ScopedAStatus onUiReady() override {
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return ndk::ScopedAStatus::ok();
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}
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ndk::ScopedAStatus authenticateWithContext(
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int64_t operationId, const common::OperationContext& /*context*/,
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std::shared_ptr<common::ICancellationSignal>* out) override {
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return authenticate(operationId, out);
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}
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ndk::ScopedAStatus enrollWithContext(
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const keymaster::HardwareAuthToken& hat,
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const common::OperationContext& /*context*/,
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std::shared_ptr<common::ICancellationSignal>* out) override {
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return enroll(hat, out);
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}
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ndk::ScopedAStatus detectInteractionWithContext(
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const common::OperationContext& /*context*/,
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std::shared_ptr<common::ICancellationSignal>* out) override {
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return detectInteraction(out);
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}
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ndk::ScopedAStatus onPointerDownWithContext(const PointerContext& /*context*/) override {
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return ndk::ScopedAStatus::ok();
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}
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ndk::ScopedAStatus onPointerUpWithContext(const PointerContext& /*context*/) override {
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return ndk::ScopedAStatus::ok();
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}
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ndk::ScopedAStatus onContextChanged(const common::OperationContext& /*context*/) override {
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return ndk::ScopedAStatus::ok();
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}
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ndk::ScopedAStatus onPointerCancelWithContext(const PointerContext& /*context*/) override {
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return ndk::ScopedAStatus::ok();
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}
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ndk::ScopedAStatus setIgnoreDisplayTouches(bool /*shouldIgnore*/) override {
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return ndk::ScopedAStatus::ok();
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}
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const std::shared_ptr<ISessionCallback> mSessionCb;
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Storage mStorage; // mMutex
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std::mt19937_64 mRandom; // mMutex
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int64_t mEnrollingSecUserId = 0; // mMutex
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int64_t mAuthChallenge = 0; // mMutex
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::android::base::unique_fd mCallerFd;
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::android::base::unique_fd mSensorThreadFd;
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std::thread mSensorListener;
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std::unordered_set<int64_t> mChallenges;
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State mState = State::IDLE; // mMutex
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mutable std::mutex mMutex;
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};
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} // namespace aidl::android::hardware::biometrics::fingerprint
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