| /* |
| * Copyright (C) 2015 The Android Open Source 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 "fingerprintd" |
| |
| #include <binder/IServiceManager.h> |
| #include <hardware/hardware.h> |
| #include <hardware/fingerprint.h> |
| #include <hardware/hw_auth_token.h> |
| #include <keystore/IKeystoreService.h> |
| #include <keystore/keystore.h> // for error codes |
| #include <utils/Log.h> |
| |
| #include "FingerprintDaemonProxy.h" |
| |
| namespace android { |
| |
| FingerprintDaemonProxy* FingerprintDaemonProxy::sInstance = NULL; |
| |
| // Supported fingerprint HAL version |
| static const uint16_t kVersion = HARDWARE_MODULE_API_VERSION(2, 0); |
| |
| FingerprintDaemonProxy::FingerprintDaemonProxy() : mModule(NULL), mDevice(NULL), mCallback(NULL) { |
| |
| } |
| |
| FingerprintDaemonProxy::~FingerprintDaemonProxy() { |
| closeHal(); |
| } |
| |
| void FingerprintDaemonProxy::hal_notify_callback(const fingerprint_msg_t *msg) { |
| FingerprintDaemonProxy* instance = FingerprintDaemonProxy::getInstance(); |
| const sp<IFingerprintDaemonCallback> callback = instance->mCallback; |
| if (callback == NULL) { |
| ALOGE("Invalid callback object"); |
| return; |
| } |
| const int64_t device = (int64_t) instance->mDevice; |
| switch (msg->type) { |
| case FINGERPRINT_ERROR: |
| ALOGD("onError(%d)", msg->data.error); |
| callback->onError(device, msg->data.error); |
| break; |
| case FINGERPRINT_ACQUIRED: |
| ALOGD("onAcquired(%d)", msg->data.acquired.acquired_info); |
| callback->onAcquired(device, msg->data.acquired.acquired_info); |
| break; |
| case FINGERPRINT_AUTHENTICATED: |
| ALOGD("onAuthenticated(fid=%d, gid=%d)", |
| msg->data.authenticated.finger.fid, |
| 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); |
| instance->notifyKeystore(hat, sizeof(msg->data.authenticated.hat)); |
| } |
| callback->onAuthenticated(device, |
| msg->data.authenticated.finger.fid, |
| msg->data.authenticated.finger.gid); |
| break; |
| case FINGERPRINT_TEMPLATE_ENROLLING: |
| ALOGD("onEnrollResult(fid=%d, gid=%d, rem=%d)", |
| msg->data.enroll.finger.fid, |
| msg->data.enroll.finger.gid, |
| msg->data.enroll.samples_remaining); |
| callback->onEnrollResult(device, |
| msg->data.enroll.finger.fid, |
| msg->data.enroll.finger.gid, |
| msg->data.enroll.samples_remaining); |
| break; |
| case FINGERPRINT_TEMPLATE_REMOVED: |
| ALOGD("onRemove(fid=%d, gid=%d)", |
| msg->data.removed.finger.fid, |
| msg->data.removed.finger.gid); |
| callback->onRemoved(device, |
| msg->data.removed.finger.fid, |
| msg->data.removed.finger.gid); |
| break; |
| default: |
| ALOGE("invalid msg type: %d", msg->type); |
| return; |
| } |
| } |
| |
| void FingerprintDaemonProxy::notifyKeystore(const uint8_t *auth_token, const size_t auth_token_length) { |
| if (auth_token != NULL && auth_token_length > 0) { |
| // TODO: cache service? |
| sp < IServiceManager > sm = defaultServiceManager(); |
| sp < IBinder > binder = sm->getService(String16("android.security.keystore")); |
| sp < IKeystoreService > service = interface_cast < IKeystoreService > (binder); |
| if (service != NULL) { |
| status_t ret = service->addAuthToken(auth_token, auth_token_length); |
| if (ret != ResponseCode::NO_ERROR) { |
| ALOGE("Falure sending auth token to KeyStore: %d", ret); |
| } |
| } else { |
| ALOGE("Unable to communicate with KeyStore"); |
| } |
| } |
| } |
| |
| void FingerprintDaemonProxy::init(const sp<IFingerprintDaemonCallback>& callback) { |
| if (mCallback != NULL && IInterface::asBinder(callback) != IInterface::asBinder(mCallback)) { |
| IInterface::asBinder(mCallback)->unlinkToDeath(this); |
| } |
| IInterface::asBinder(callback)->linkToDeath(this); |
| mCallback = callback; |
| } |
| |
| int32_t FingerprintDaemonProxy::enroll(const uint8_t* token, ssize_t tokenSize, int32_t groupId, |
| int32_t timeout) { |
| ALOG(LOG_VERBOSE, LOG_TAG, "enroll(gid=%d, timeout=%d)\n", groupId, timeout); |
| if (tokenSize != sizeof(hw_auth_token_t) ) { |
| ALOG(LOG_VERBOSE, LOG_TAG, "enroll() : invalid token size %zu\n", tokenSize); |
| return -1; |
| } |
| const hw_auth_token_t* authToken = reinterpret_cast<const hw_auth_token_t*>(token); |
| return mDevice->enroll(mDevice, authToken, groupId, timeout); |
| } |
| |
| uint64_t FingerprintDaemonProxy::preEnroll() { |
| return mDevice->pre_enroll(mDevice); |
| } |
| |
| int32_t FingerprintDaemonProxy::postEnroll() { |
| return mDevice->post_enroll(mDevice); |
| } |
| |
| int32_t FingerprintDaemonProxy::stopEnrollment() { |
| ALOG(LOG_VERBOSE, LOG_TAG, "stopEnrollment()\n"); |
| return mDevice->cancel(mDevice); |
| } |
| |
| int32_t FingerprintDaemonProxy::authenticate(uint64_t sessionId, uint32_t groupId) { |
| ALOG(LOG_VERBOSE, LOG_TAG, "authenticate(sid=%" PRId64 ", gid=%d)\n", sessionId, groupId); |
| return mDevice->authenticate(mDevice, sessionId, groupId); |
| } |
| |
| int32_t FingerprintDaemonProxy::stopAuthentication() { |
| ALOG(LOG_VERBOSE, LOG_TAG, "stopAuthentication()\n"); |
| return mDevice->cancel(mDevice); |
| } |
| |
| int32_t FingerprintDaemonProxy::remove(int32_t fingerId, int32_t groupId) { |
| ALOG(LOG_VERBOSE, LOG_TAG, "remove(fid=%d, gid=%d)\n", fingerId, groupId); |
| return mDevice->remove(mDevice, groupId, fingerId); |
| } |
| |
| uint64_t FingerprintDaemonProxy::getAuthenticatorId() { |
| return mDevice->get_authenticator_id(mDevice); |
| } |
| |
| int32_t FingerprintDaemonProxy::setActiveGroup(int32_t groupId, const uint8_t* path, |
| ssize_t pathlen) { |
| if (pathlen >= PATH_MAX || pathlen <= 0) { |
| ALOGE("Bad path length: %zd", pathlen); |
| return -1; |
| } |
| // Convert to null-terminated string |
| char path_name[PATH_MAX]; |
| memcpy(path_name, path, pathlen); |
| path_name[pathlen] = '\0'; |
| ALOG(LOG_VERBOSE, LOG_TAG, "setActiveGroup(%d, %s, %zu)", groupId, path_name, pathlen); |
| return mDevice->set_active_group(mDevice, groupId, path_name); |
| } |
| |
| int64_t FingerprintDaemonProxy::openHal() { |
| ALOG(LOG_VERBOSE, LOG_TAG, "nativeOpenHal()\n"); |
| int err; |
| const hw_module_t *hw_module = NULL; |
| if (0 != (err = hw_get_module(FINGERPRINT_HARDWARE_MODULE_ID, &hw_module))) { |
| ALOGE("Can't open fingerprint HW Module, error: %d", err); |
| return 0; |
| } |
| if (NULL == hw_module) { |
| ALOGE("No valid fingerprint module"); |
| return 0; |
| } |
| |
| mModule = reinterpret_cast<const fingerprint_module_t*>(hw_module); |
| |
| if (mModule->common.methods->open == NULL) { |
| ALOGE("No valid open method"); |
| return 0; |
| } |
| |
| hw_device_t *device = NULL; |
| |
| if (0 != (err = mModule->common.methods->open(hw_module, NULL, &device))) { |
| ALOGE("Can't open fingerprint methods, error: %d", err); |
| return 0; |
| } |
| |
| if (kVersion != device->version) { |
| ALOGE("Wrong fp version. Expected %d, got %d", kVersion, device->version); |
| // return 0; // FIXME |
| } |
| |
| mDevice = reinterpret_cast<fingerprint_device_t*>(device); |
| err = mDevice->set_notify(mDevice, hal_notify_callback); |
| if (err < 0) { |
| ALOGE("Failed in call to set_notify(), err=%d", err); |
| return 0; |
| } |
| |
| // Sanity check - remove |
| if (mDevice->notify != hal_notify_callback) { |
| ALOGE("NOTIFY not set properly: %p != %p", mDevice->notify, hal_notify_callback); |
| } |
| |
| ALOG(LOG_VERBOSE, LOG_TAG, "fingerprint HAL successfully initialized"); |
| return reinterpret_cast<int64_t>(mDevice); // This is just a handle |
| } |
| |
| int32_t FingerprintDaemonProxy::closeHal() { |
| ALOG(LOG_VERBOSE, LOG_TAG, "nativeCloseHal()\n"); |
| if (mDevice == NULL) { |
| ALOGE("No valid device"); |
| return -ENOSYS; |
| } |
| int err; |
| if (0 != (err = mDevice->common.close(reinterpret_cast<hw_device_t*>(mDevice)))) { |
| ALOGE("Can't close fingerprint module, error: %d", err); |
| return err; |
| } |
| mDevice = NULL; |
| return 0; |
| } |
| |
| void FingerprintDaemonProxy::binderDied(const wp<IBinder>& who) { |
| ALOGD("binder died"); |
| int err; |
| if (0 != (err = closeHal())) { |
| ALOGE("Can't close fingerprint device, error: %d", err); |
| } |
| if (IInterface::asBinder(mCallback) == who) { |
| mCallback = NULL; |
| } |
| } |
| |
| } |
