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https://github.com/Evolution-X/hardware_interfaces
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b00dade599
Separate timed lockout failure count from permanent one, so it can be reset independently Bug: 357671325 Test: atest android.hardware.biometrics.fingerprint.* -c Change-Id: I08a8283a8eb464201b0f06c9c9bb7ba7635a54ac
87 lines
2.9 KiB
C++
87 lines
2.9 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 "Fingerprint.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(bool dueToTimeout) {
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if (!dueToTimeout) {
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mFailedCount = 0;
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}
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mFailedCountTimed = 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 = Fingerprint::cfg().get<bool>("lockout_enable");
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if (enabled) {
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mFailedCount++;
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mFailedCountTimed++;
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int32_t lockoutTimedThreshold =
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Fingerprint::cfg().get<std::int32_t>("lockout_timed_threshold");
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int32_t lockoutPermanetThreshold =
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Fingerprint::cfg().get<std::int32_t>("lockout_permanent_threshold");
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if (mFailedCount >= lockoutPermanetThreshold) {
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mCurrentMode = LockoutMode::kPermanent;
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Fingerprint::cfg().set<bool>("lockout", true);
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} else if (mFailedCountTimed >= 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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Fingerprint::cfg().get<std::int32_t>("lockout_timed_duration");
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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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int32_t lockoutTimedDuration =
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Fingerprint::cfg().get<std::int32_t>("lockout_timed_duration");
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auto now = Util::getSystemNanoTime();
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auto elapsed = (now - mLockoutTimedStart) / 1000000LL;
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res = lockoutTimedDuration - elapsed;
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LOG(INFO) << "elapsed=" << elapsed << " now = " << now
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<< " mLockoutTimedStart=" << mLockoutTimedStart << " res=" << res;
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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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