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device_samsung_sm7125-common/fingerprint/BiometricsFingerprint.cpp

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/*
* Copyright (C) 2019 The LineageOS Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "vendor.samsung.hardware.biometrics.fingerprint@3.0-service.sm7125"
#include <android-base/logging.h>
#include <hardware/hw_auth_token.h>
#include <hardware/fingerprint.h>
#include <hardware/hardware.h>
#include "BiometricsFingerprint.h"
#include <android-base/properties.h>
#include <fstream>
#include <dlfcn.h>
#include <inttypes.h>
#include <unistd.h>
#include <thread>
#define SEH_FINGER_STATE 22
#define SEH_PARAM_PRESSED 2
#define SEH_PARAM_RELEASED 1
#define SEH_AOSP_FQNAME "android.hardware.biometrics.fingerprint@2.3::IBiometricsFingerprint"
#define TSP_CMD_PATH "/sys/class/sec/tsp/cmd"
#define HBM_PATH "/sys/class/lcd/panel/mask_brightness"
namespace vendor {
namespace samsung {
namespace hardware {
namespace biometrics {
namespace fingerprint {
namespace V3_0 {
namespace implementation {
using RequestStatus = android::hardware::biometrics::fingerprint::V2_1::RequestStatus;
ISehBiometricsFingerprint* SehBiometricsFingerprint::sInstance = nullptr;
template <typename T>
static void set(const std::string& path, const T& value) {
std::ofstream file(path);
file << value;
}
std::string getBootloader() {
return android::base::GetProperty("ro.boot.bootloader", "");
}
template <typename T>
static T get(const std::string& path, const T& def) {
std::ifstream file(path);
T result;
file >> result;
return file.fail() ? def : result;
}
SehBiometricsFingerprint::SehBiometricsFingerprint() : mClientCallback(nullptr) {
sInstance = this; // keep track of the most recent instance
if (!openHal()) {
LOG(ERROR) << "Can't open HAL module";
}
if (getBootloader().find("A525") != std::string::npos) {
set(TSP_CMD_PATH, "set_fod_rect,421,2018,659,2256");
} else if (getBootloader().find("A725") != std::string::npos) {
set(TSP_CMD_PATH, "set_fod_rect,426,2031,654,2259");
} else {
LOG(ERROR) << "Device is not an A52 or A72, not setting set_fod_rect";
}
std::ifstream in("/sys/devices/virtual/fingerprint/fingerprint/position");
mIsUdfps = !!in;
if (in)
in.close();
set(TSP_CMD_PATH, "fod_enable,1,1,0");
}
SehBiometricsFingerprint::~SehBiometricsFingerprint() {
if (ss_fingerprint_close() != 0) {
LOG(ERROR) << "Can't close HAL module";
}
}
Return<bool> SehBiometricsFingerprint::isUdfps(uint32_t) {
return mIsUdfps;
}
void SehBiometricsFingerprint::requestResult(int, const hidl_vec<int8_t>&) {
// Ignore all results
}
static hidl_vec<int8_t> stringToVec(const std::string& str) {
auto vec = hidl_vec<int8_t>();
vec.resize(str.size() + 1);
for (size_t i = 0; i < str.size(); ++i) {
vec[i] = (int8_t) str[i];
}
vec[str.size()] = '\0';
return vec;
}
Return<void> SehBiometricsFingerprint::onFingerDown(uint32_t, uint32_t, float, float) {
std::thread([this]() {
std::this_thread::sleep_for(std::chrono::milliseconds(35));
set(HBM_PATH, "331");
}).detach();
sehRequest(SEH_FINGER_STATE, SEH_PARAM_PRESSED,
stringToVec(SEH_AOSP_FQNAME), SehBiometricsFingerprint::requestResult);
return Void();
}
Return<void> SehBiometricsFingerprint::onFingerUp() {
sehRequest(SEH_FINGER_STATE, SEH_PARAM_RELEASED,
stringToVec(SEH_AOSP_FQNAME), SehBiometricsFingerprint::requestResult);
set(HBM_PATH, "0");
return Void();
}
Return<RequestStatus> SehBiometricsFingerprint::ErrorFilter(int32_t error) {
switch (error) {
case 0:
return RequestStatus::SYS_OK;
case -2:
return RequestStatus::SYS_ENOENT;
case -4:
return RequestStatus::SYS_EINTR;
case -5:
return RequestStatus::SYS_EIO;
case -11:
return RequestStatus::SYS_EAGAIN;
case -12:
return RequestStatus::SYS_ENOMEM;
case -13:
return RequestStatus::SYS_EACCES;
case -14:
return RequestStatus::SYS_EFAULT;
case -16:
return RequestStatus::SYS_EBUSY;
case -22:
return RequestStatus::SYS_EINVAL;
case -28:
return RequestStatus::SYS_ENOSPC;
case -110:
return RequestStatus::SYS_ETIMEDOUT;
default:
LOG(ERROR) << "An unknown error returned from fingerprint vendor library: " << error;
return RequestStatus::SYS_UNKNOWN;
}
}
// Translate from errors returned by traditional HAL (see fingerprint.h) to
// HIDL-compliant FingerprintError.
FingerprintError SehBiometricsFingerprint::VendorErrorFilter(int32_t error, int32_t* vendorCode) {
*vendorCode = 0;
switch (error) {
case FINGERPRINT_ERROR_HW_UNAVAILABLE:
return FingerprintError::ERROR_HW_UNAVAILABLE;
case FINGERPRINT_ERROR_UNABLE_TO_PROCESS:
return FingerprintError::ERROR_UNABLE_TO_PROCESS;
case FINGERPRINT_ERROR_TIMEOUT:
return FingerprintError::ERROR_TIMEOUT;
case FINGERPRINT_ERROR_NO_SPACE:
return FingerprintError::ERROR_NO_SPACE;
case FINGERPRINT_ERROR_CANCELED:
return FingerprintError::ERROR_CANCELED;
case FINGERPRINT_ERROR_UNABLE_TO_REMOVE:
return FingerprintError::ERROR_UNABLE_TO_REMOVE;
case FINGERPRINT_ERROR_LOCKOUT:
return FingerprintError::ERROR_LOCKOUT;
default:
if (error >= FINGERPRINT_ERROR_VENDOR_BASE) {
// vendor specific code.
*vendorCode = error - FINGERPRINT_ERROR_VENDOR_BASE;
return FingerprintError::ERROR_VENDOR;
}
}
LOG(ERROR) << "Unknown error from fingerprint vendor library: " << error;
return FingerprintError::ERROR_UNABLE_TO_PROCESS;
}
// Translate acquired messages returned by traditional HAL (see fingerprint.h)
// to HIDL-compliant FingerprintAcquiredInfo.
FingerprintAcquiredInfo SehBiometricsFingerprint::VendorAcquiredFilter(int32_t info,
int32_t* vendorCode) {
*vendorCode = 0;
switch (info) {
case FINGERPRINT_ACQUIRED_GOOD:
return FingerprintAcquiredInfo::ACQUIRED_GOOD;
case FINGERPRINT_ACQUIRED_PARTIAL:
return FingerprintAcquiredInfo::ACQUIRED_PARTIAL;
case FINGERPRINT_ACQUIRED_INSUFFICIENT:
return FingerprintAcquiredInfo::ACQUIRED_INSUFFICIENT;
case FINGERPRINT_ACQUIRED_IMAGER_DIRTY:
return FingerprintAcquiredInfo::ACQUIRED_IMAGER_DIRTY;
case FINGERPRINT_ACQUIRED_TOO_SLOW:
return FingerprintAcquiredInfo::ACQUIRED_TOO_SLOW;
case FINGERPRINT_ACQUIRED_TOO_FAST:
return FingerprintAcquiredInfo::ACQUIRED_TOO_FAST;
default:
if (info >= FINGERPRINT_ACQUIRED_VENDOR_BASE) {
// vendor specific code.
*vendorCode = info - FINGERPRINT_ACQUIRED_VENDOR_BASE;
return FingerprintAcquiredInfo::ACQUIRED_VENDOR;
}
}
LOG(ERROR) << "Unknown acquiredmsg from fingerprint vendor library: " << info;
return FingerprintAcquiredInfo::ACQUIRED_INSUFFICIENT;
}
Return<uint64_t> SehBiometricsFingerprint::setNotify(
const sp<IBiometricsFingerprintClientCallback>& clientCallback) {
std::lock_guard<std::mutex> lock(mClientCallbackMutex);
mClientCallback = clientCallback;
// This is here because HAL 2.3 doesn't have a way to propagate a
// unique token for its driver. Subsequent versions should send a unique
// token for each call to setNotify(). This is fine as long as there's only
// one fingerprint device on the platform.
return reinterpret_cast<uint64_t>(this);
}
Return<uint64_t> SehBiometricsFingerprint::preEnroll() {
return ss_fingerprint_pre_enroll();
}
Return<RequestStatus> SehBiometricsFingerprint::enroll(const hidl_array<uint8_t, 69>& hat,
uint32_t gid, uint32_t timeoutSec) {
const hw_auth_token_t* authToken = reinterpret_cast<const hw_auth_token_t*>(hat.data());
return ErrorFilter(ss_fingerprint_enroll(authToken, gid, timeoutSec));
}
Return<RequestStatus> SehBiometricsFingerprint::postEnroll() {
return ErrorFilter(ss_fingerprint_post_enroll());
}
Return<uint64_t> SehBiometricsFingerprint::getAuthenticatorId() {
return ss_fingerprint_get_auth_id();
}
Return<RequestStatus> SehBiometricsFingerprint::cancel() {
return ErrorFilter(ss_fingerprint_cancel());
}
Return<RequestStatus> SehBiometricsFingerprint::enumerate() {
if (ss_fingerprint_enumerate != nullptr) {
return ErrorFilter(ss_fingerprint_enumerate());
}
return RequestStatus::SYS_UNKNOWN;
}
Return<RequestStatus> SehBiometricsFingerprint::remove(uint32_t gid, uint32_t fid) {
return ErrorFilter(ss_fingerprint_remove(gid, fid));
}
Return<RequestStatus> SehBiometricsFingerprint::setActiveGroup(uint32_t gid,
const hidl_string&) {
std::string storePath = "/data/vendor/biometrics/fp/User_" + std::to_string(gid);
LOG(ERROR) << "setActiveGroup " << gid << " " << storePath;
return ErrorFilter(ss_fingerprint_set_active_group(gid, storePath.c_str()));
}
Return<RequestStatus> SehBiometricsFingerprint::authenticate(uint64_t operationId, uint32_t gid) {
return ErrorFilter(ss_fingerprint_authenticate(operationId, gid));
}
Return<void> SehBiometricsFingerprint::sehRequest(int32_t cmd_id,
int32_t inParam, const hidl_vec<int8_t>& inputBuf, sehRequest_cb _hidl_cb) {
size_t inputSize = 0;
for (; inputBuf[inputSize] != '\0'; ++inputSize);
int8_t input[inputSize + 1];
// HACK: SehBiometrics 3.0 doesn't have the len parameter like the older 2.1 HAL has. Set it to 10 for now
int8_t output[10];
for (size_t i = 0; i < inputSize; ++i) {
input[i] = inputBuf[i];
}
input[inputSize] = '\0';
for (size_t i = 0; i < static_cast<size_t>(10); ++i) {
output[i] = '\0';
}
LOG(ERROR) << "request(cmd_id=" << cmd_id
<< ", len=" << 10
<< ", inParam=" << inParam
<< ", inputBuf=" << input
<< ")";
int ret = ss_fingerprint_request(cmd_id, input, 0, 10 == 0 ? nullptr : output, 10, inParam);
auto outBuf = hidl_vec<int8_t>();
outBuf.setToExternal(output, 10);
_hidl_cb(ret, outBuf);
return Void();
}
ISehBiometricsFingerprint* SehBiometricsFingerprint::getInstance() {
if (!sInstance) {
sInstance = new SehBiometricsFingerprint();
}
return sInstance;
}
bool SehBiometricsFingerprint::openHal() {
void* handle = dlopen("libbauthserver.so", RTLD_NOW);
if (handle) {
int err;
ss_fingerprint_close =
reinterpret_cast<typeof(ss_fingerprint_close)>(dlsym(handle, "ss_fingerprint_close"));
ss_fingerprint_open =
reinterpret_cast<typeof(ss_fingerprint_open)>(dlsym(handle, "ss_fingerprint_open"));
ss_set_notify_callback = reinterpret_cast<typeof(ss_set_notify_callback)>(
dlsym(handle, "ss_set_notify_callback"));
ss_fingerprint_pre_enroll = reinterpret_cast<typeof(ss_fingerprint_pre_enroll)>(
dlsym(handle, "ss_fingerprint_pre_enroll"));
ss_fingerprint_enroll =
reinterpret_cast<typeof(ss_fingerprint_enroll)>(dlsym(handle, "ss_fingerprint_enroll"));
ss_fingerprint_post_enroll = reinterpret_cast<typeof(ss_fingerprint_post_enroll)>(
dlsym(handle, "ss_fingerprint_post_enroll"));
ss_fingerprint_get_auth_id = reinterpret_cast<typeof(ss_fingerprint_get_auth_id)>(
dlsym(handle, "ss_fingerprint_get_auth_id"));
ss_fingerprint_cancel =
reinterpret_cast<typeof(ss_fingerprint_cancel)>(dlsym(handle, "ss_fingerprint_cancel"));
ss_fingerprint_enumerate = reinterpret_cast<typeof(ss_fingerprint_enumerate)>(
dlsym(handle, "ss_fingerprint_enumerate"));
ss_fingerprint_remove =
reinterpret_cast<typeof(ss_fingerprint_remove)>(dlsym(handle, "ss_fingerprint_remove"));
ss_fingerprint_set_active_group = reinterpret_cast<typeof(ss_fingerprint_set_active_group)>(
dlsym(handle, "ss_fingerprint_set_active_group"));
ss_fingerprint_authenticate = reinterpret_cast<typeof(ss_fingerprint_authenticate)>(
dlsym(handle, "ss_fingerprint_authenticate"));
ss_fingerprint_request = reinterpret_cast<typeof(ss_fingerprint_request)>(
dlsym(handle, "ss_fingerprint_request"));
if ((err = ss_fingerprint_open(nullptr)) != 0) {
LOG(ERROR) << "Can't open fingerprint, error: " << err;
return false;
}
if ((err = ss_set_notify_callback(SehBiometricsFingerprint::notify)) != 0) {
LOG(ERROR) << "Can't register fingerprint module callback, error: " << err;
return false;
}
return true;
}
return false;
}
void SehBiometricsFingerprint::notify(const fingerprint_msg_t* msg) {
SehBiometricsFingerprint* thisPtr =
static_cast<SehBiometricsFingerprint*>(SehBiometricsFingerprint::getInstance());
std::lock_guard<std::mutex> lock(thisPtr->mClientCallbackMutex);
if (thisPtr == nullptr || thisPtr->mClientCallback == nullptr) {
LOG(ERROR) << "Receiving callbacks before the client callback is registered.";
return;
}
const uint64_t devId = 1;
switch (msg->type) {
case FINGERPRINT_ERROR: {
int32_t vendorCode = 0;
FingerprintError result = VendorErrorFilter(msg->data.error, &vendorCode);
LOG(DEBUG) << "onError(" << static_cast<int>(result) << ")";
if (!thisPtr->mClientCallback->onError(devId, result, vendorCode).isOk()) {
LOG(ERROR) << "failed to invoke fingerprint onError callback";
}
} break;
case FINGERPRINT_ACQUIRED: {
int32_t vendorCode = 0;
FingerprintAcquiredInfo result =
VendorAcquiredFilter(msg->data.acquired.acquired_info, &vendorCode);
LOG(DEBUG) << "onAcquired(" << static_cast<int>(result) << ")";
if (!thisPtr->mClientCallback->onAcquired(devId, result, vendorCode).isOk()) {
LOG(ERROR) << "failed to invoke fingerprint onAcquired callback";
}
} break;
case FINGERPRINT_TEMPLATE_ENROLLING:
if(msg->data.enroll.samples_remaining == 0) {
set(HBM_PATH, "0");
}
LOG(DEBUG) << "onEnrollResult(fid=" << msg->data.enroll.finger.fid
<< ", gid=" << msg->data.enroll.finger.gid
<< ", rem=" << msg->data.enroll.samples_remaining << ")";
if (thisPtr->mClientCallback
->onEnrollResult(devId, msg->data.enroll.finger.fid,
msg->data.enroll.finger.gid, msg->data.enroll.samples_remaining)
.isOk()) {
fingerprint_msg_t* newMsg = (fingerprint_msg_t*)msg;
newMsg->data.enroll.samples_remaining = 100 - msg->data.enroll.samples_remaining;
msg = newMsg;
} else {
LOG(ERROR) << "failed to invoke fingerprint onEnrollResult callback";
}
break;
case FINGERPRINT_TEMPLATE_REMOVED:
LOG(DEBUG) << "onRemove(fid=" << msg->data.removed.finger.fid
<< ", gid=" << msg->data.removed.finger.gid
<< ", rem=" << msg->data.removed.remaining_templates << ")";
if (!thisPtr->mClientCallback
->onRemoved(devId, msg->data.removed.finger.fid, msg->data.removed.finger.gid,
msg->data.removed.remaining_templates)
.isOk()) {
LOG(ERROR) << "failed to invoke fingerprint onRemoved callback";
}
break;
case FINGERPRINT_AUTHENTICATED:
LOG(DEBUG) << "onAuthenticated(fid=" << msg->data.authenticated.finger.fid
<< ", gid=" << msg->data.authenticated.finger.gid << ")";
if (msg->data.authenticated.finger.fid != 0) {
const uint8_t* hat = reinterpret_cast<const uint8_t*>(&msg->data.authenticated.hat);
const hidl_vec<uint8_t> token(
std::vector<uint8_t>(hat, hat + sizeof(msg->data.authenticated.hat)));
set(HBM_PATH, "0");
if (!thisPtr->mClientCallback
->onAuthenticated(devId, msg->data.authenticated.finger.fid,
msg->data.authenticated.finger.gid, token)
.isOk()) {
LOG(ERROR) << "failed to invoke fingerprint onAuthenticated callback";
}
} else {
// Not a recognized fingerprint
if (!thisPtr->mClientCallback
->onAuthenticated(devId, msg->data.authenticated.finger.fid,
msg->data.authenticated.finger.gid, hidl_vec<uint8_t>())
.isOk()) {
LOG(ERROR) << "failed to invoke fingerprint onAuthenticated callback";
}
}
break;
case FINGERPRINT_TEMPLATE_ENUMERATING:
LOG(DEBUG) << "onEnumerate(fid=" << msg->data.enumerated.finger.fid
<< ", gid=" << msg->data.enumerated.finger.gid
<< ", rem=" << msg->data.enumerated.remaining_templates << ")";
if (!thisPtr->mClientCallback
->onEnumerate(devId, msg->data.enumerated.finger.fid,
msg->data.enumerated.finger.gid,
msg->data.enumerated.remaining_templates)
.isOk()) {
LOG(ERROR) << "failed to invoke fingerprint onEnumerate callback";
}
break;
}
}
} // namespace implementation
} // namespace V3_0
} // namespace fingerprint
} // namespace biometrics
} // namespace hardware
} // namespace samsung
} // namespace vendor