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/*
* Copyright 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.
*/
#include <inttypes.h>
#include <binder/IPCThreadState.h>
#include <binder/IServiceManager.h>
#include <binder/PermissionCache.h>
#include <utils/String16.h>
#include <utils/Looper.h>
#include <keystore/IKeystoreService.h>
#include <keystore/keystore.h> // for error code
#include <hardware/hardware.h>
#include <hardware/fingerprint.h>
#include <hardware/hw_auth_token.h>
#include "IFingerprintDaemon.h"
#include "IFingerprintDaemonCallback.h"
namespace android {
static const String16 USE_FINGERPRINT_PERMISSION("android.permission.USE_FINGERPRINT");
static const String16 MANAGE_FINGERPRINT_PERMISSION("android.permission.MANAGE_FINGERPRINT");
static const String16 HAL_FINGERPRINT_PERMISSION("android.permission.MANAGE_FINGERPRINT"); // TODO
static const String16 DUMP_PERMISSION("android.permission.DUMP");
const android::String16
IFingerprintDaemon::descriptor("android.hardware.fingerprint.IFingerprintDaemon");
const android::String16&
IFingerprintDaemon::getInterfaceDescriptor() const {
return IFingerprintDaemon::descriptor;
}
status_t BnFingerprintDaemon::onTransact(uint32_t code, const Parcel& data, Parcel* reply,
uint32_t flags) {
switch(code) {
case AUTHENTICATE: {
CHECK_INTERFACE(IFingerprintDaemon, data, reply);
if (!checkPermission(HAL_FINGERPRINT_PERMISSION)) {
return PERMISSION_DENIED;
}
const uint64_t sessionId = data.readInt64();
const uint32_t groupId = data.readInt32();
const int32_t ret = authenticate(sessionId, groupId);
reply->writeNoException();
reply->writeInt32(ret);
return NO_ERROR;
};
case CANCEL_AUTHENTICATION: {
CHECK_INTERFACE(IFingerprintDaemon, data, reply);
if (!checkPermission(HAL_FINGERPRINT_PERMISSION)) {
return PERMISSION_DENIED;
}
const int32_t ret = stopAuthentication();
reply->writeNoException();
reply->writeInt32(ret);
return NO_ERROR;
}
case ENROLL: {
CHECK_INTERFACE(IFingerprintDaemon, data, reply);
if (!checkPermission(HAL_FINGERPRINT_PERMISSION)) {
return PERMISSION_DENIED;
}
const ssize_t tokenSize = data.readInt32();
const uint8_t* token = static_cast<const uint8_t *>(data.readInplace(tokenSize));
const int32_t groupId = data.readInt32();
const int32_t timeout = data.readInt32();
const int32_t ret = enroll(token, tokenSize, groupId, timeout);
reply->writeNoException();
reply->writeInt32(ret);
return NO_ERROR;
}
case CANCEL_ENROLLMENT: {
CHECK_INTERFACE(IFingerprintDaemon, data, reply);
if (!checkPermission(HAL_FINGERPRINT_PERMISSION)) {
return PERMISSION_DENIED;
}
const int32_t ret = stopEnrollment();
reply->writeNoException();
reply->writeInt32(ret);
return NO_ERROR;
}
case PRE_ENROLL: {
CHECK_INTERFACE(IFingerprintDaemon, data, reply);
if (!checkPermission(HAL_FINGERPRINT_PERMISSION)) {
return PERMISSION_DENIED;
}
const uint64_t ret = preEnroll();
reply->writeNoException();
reply->writeInt64(ret);
return NO_ERROR;
}
case POST_ENROLL: {
CHECK_INTERFACE(IFingerprintDaemon, data, reply);
if (!checkPermission(HAL_FINGERPRINT_PERMISSION)) {
return PERMISSION_DENIED;
}
const int32_t ret = postEnroll();
reply->writeNoException();
reply->writeInt32(ret);
return NO_ERROR;
}
case REMOVE: {
CHECK_INTERFACE(IFingerprintDaemon, data, reply);
if (!checkPermission(HAL_FINGERPRINT_PERMISSION)) {
return PERMISSION_DENIED;
}
const int32_t fingerId = data.readInt32();
const int32_t groupId = data.readInt32();
const int32_t ret = remove(fingerId, groupId);
reply->writeNoException();
reply->writeInt32(ret);
return NO_ERROR;
}
case GET_AUTHENTICATOR_ID: {
CHECK_INTERFACE(IFingerprintDaemon, data, reply);
if (!checkPermission(HAL_FINGERPRINT_PERMISSION)) {
return PERMISSION_DENIED;
}
const uint64_t ret = getAuthenticatorId();
reply->writeNoException();
reply->writeInt64(ret);
return NO_ERROR;
}
case SET_ACTIVE_GROUP: {
CHECK_INTERFACE(IFingerprintDaemon, data, reply);
if (!checkPermission(HAL_FINGERPRINT_PERMISSION)) {
return PERMISSION_DENIED;
}
const int32_t group = data.readInt32();
const ssize_t pathSize = data.readInt32();
const uint8_t* path = static_cast<const uint8_t *>(data.readInplace(pathSize));
const int32_t ret = setActiveGroup(group, path, pathSize);
reply->writeNoException();
reply->writeInt32(ret);
return NO_ERROR;
}
case OPEN_HAL: {
CHECK_INTERFACE(IFingerprintDaemon, data, reply);
if (!checkPermission(HAL_FINGERPRINT_PERMISSION)) {
return PERMISSION_DENIED;
}
const int64_t ret = openHal();
reply->writeNoException();
reply->writeInt64(ret);
return NO_ERROR;
}
case CLOSE_HAL: {
CHECK_INTERFACE(IFingerprintDaemon, data, reply);
if (!checkPermission(HAL_FINGERPRINT_PERMISSION)) {
return PERMISSION_DENIED;
}
const int32_t ret = closeHal();
reply->writeNoException();
reply->writeInt32(ret);
return NO_ERROR;
}
case INIT: {
CHECK_INTERFACE(IFingerprintDaemon, data, reply);
if (!checkPermission(HAL_FINGERPRINT_PERMISSION)) {
return PERMISSION_DENIED;
}
sp<IFingerprintDaemonCallback> callback =
interface_cast<IFingerprintDaemonCallback>(data.readStrongBinder());
init(callback);
reply->writeNoException();
return NO_ERROR;
}
default:
return BBinder::onTransact(code, data, reply, flags);
}
};
bool BnFingerprintDaemon::checkPermission(const String16& permission) {
const IPCThreadState* ipc = IPCThreadState::self();
const int calling_pid = ipc->getCallingPid();
const int calling_uid = ipc->getCallingUid();
return PermissionCache::checkPermission(permission, calling_pid, calling_uid);
}
}; // namespace android
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