78 lines
2.5 KiB
C++
78 lines
2.5 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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#include "FakeLockoutTracker.h"
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#include <fingerprint.sysprop.h>
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#include "util/Util.h"
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using namespace ::android::fingerprint::virt;
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namespace aidl::android::hardware::biometrics::fingerprint {
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void FakeLockoutTracker::reset() {
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mFailedCount = 0;
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mLockoutTimedStart = 0;
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mCurrentMode = LockoutMode::kNone;
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}
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void FakeLockoutTracker::addFailedAttempt() {
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bool enabled = FingerprintHalProperties::lockout_enable().value_or(false);
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if (enabled) {
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mFailedCount++;
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int32_t lockoutTimedThreshold =
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FingerprintHalProperties::lockout_timed_threshold().value_or(5);
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int32_t lockoutPermanetThreshold =
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FingerprintHalProperties::lockout_permanent_threshold().value_or(20);
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if (mFailedCount >= lockoutPermanetThreshold) {
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mCurrentMode = LockoutMode::kPermanent;
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FingerprintHalProperties::lockout(true);
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} else if (mFailedCount >= lockoutTimedThreshold) {
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if (mCurrentMode == LockoutMode::kNone) {
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mCurrentMode = LockoutMode::kTimed;
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mLockoutTimedStart = Util::getSystemNanoTime();
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}
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}
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} else {
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reset();
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}
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}
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FakeLockoutTracker::LockoutMode FakeLockoutTracker::getMode() {
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if (mCurrentMode == LockoutMode::kTimed) {
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int32_t lockoutTimedDuration =
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FingerprintHalProperties::lockout_timed_duration().value_or(10 * 100);
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if (Util::hasElapsed(mLockoutTimedStart, lockoutTimedDuration)) {
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mCurrentMode = LockoutMode::kNone;
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mLockoutTimedStart = 0;
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}
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}
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return mCurrentMode;
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}
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int64_t FakeLockoutTracker::getLockoutTimeLeft() {
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int64_t res = 0;
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if (mLockoutTimedStart > 0) {
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auto now = Util::getSystemNanoTime();
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auto left = now - mLockoutTimedStart;
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res = (left > 0) ? (left / 1000000LL) : 0;
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}
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return res;
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}
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} // namespace aidl::android::hardware::biometrics::fingerprint
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