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/*
* 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.
*/
#include <hardware/hardware.h>
#include <hardware/gatekeeper.h>
#define LOG_TAG "I9305Gatekeeper"
#include <cutils/log.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include "SoftGateKeeper.h"
#include "SoftGateKeeperDevice.h"
using i9305::SoftGateKeeperDevice;
struct i9305_gatekeeper_device {
gatekeeper_device device;
SoftGateKeeperDevice *s_gatekeeper;
};
static i9305_gatekeeper_device s_device;
static int enroll(const struct gatekeeper_device *dev __unused, uint32_t uid,
const uint8_t *current_password_handle, uint32_t current_password_handle_length,
const uint8_t *current_password, uint32_t current_password_length,
const uint8_t *desired_password, uint32_t desired_password_length,
uint8_t **enrolled_password_handle, uint32_t *enrolled_password_handle_length) {
SoftGateKeeperDevice *s_gatekeeper = ((i9305_gatekeeper_device*)(dev))->s_gatekeeper;
ALOGE("called %s with gate keeper %p device %p\n", __func__, s_gatekeeper, dev);
if (s_gatekeeper == nullptr) {
abort();
return -EINVAL;
}
return s_gatekeeper->enroll(uid,
current_password_handle, current_password_handle_length,
current_password, current_password_length,
desired_password, desired_password_length,
enrolled_password_handle, enrolled_password_handle_length);
}
static int verify(const struct gatekeeper_device *dev __unused, uint32_t uid, uint64_t challenge,
const uint8_t *enrolled_password_handle, uint32_t enrolled_password_handle_length,
const uint8_t *provided_password, uint32_t provided_password_length,
uint8_t **auth_token, uint32_t *auth_token_length, bool *request_reenroll) {
SoftGateKeeperDevice *s_gatekeeper = ((i9305_gatekeeper_device*)(dev))->s_gatekeeper;
ALOGE("called %s with gate keeper %p device %p\n", __func__, s_gatekeeper, dev);
if (s_gatekeeper == nullptr) return -EINVAL;
return s_gatekeeper->verify(uid, challenge,
enrolled_password_handle, enrolled_password_handle_length,
provided_password, provided_password_length,
auth_token, auth_token_length, request_reenroll);
}
static int close_device(hw_device_t* dev __unused) {
SoftGateKeeperDevice *s_gatekeeper = ((i9305_gatekeeper_device*)(dev))->s_gatekeeper;
if (s_gatekeeper == nullptr) return 0;
delete s_gatekeeper;
s_gatekeeper = nullptr;
ALOGE("called %s with gate keeper %p device %p\n", __func__, s_gatekeeper, dev);
return 0;
}
static int i9305_gatekeeper_open(const hw_module_t *module, const char *name,
hw_device_t **device) {
if (strcmp(name, HARDWARE_GATEKEEPER) != 0) {
abort();
return -EINVAL;
}
memset(&s_device, 0, sizeof(s_device));
SoftGateKeeperDevice *s_gatekeeper = new SoftGateKeeperDevice();
if (s_gatekeeper == nullptr) return -ENOMEM;
s_device.s_gatekeeper = s_gatekeeper;
s_device.device.common.tag = HARDWARE_DEVICE_TAG;
s_device.device.common.version = 1;
s_device.device.common.module = const_cast<hw_module_t *>(module);
s_device.device.common.close = close_device;
s_device.device.enroll = enroll;
s_device.device.verify = verify;
s_device.device.delete_user = nullptr;
s_device.device.delete_all_users = nullptr;
*device = &s_device.device.common;
ALOGE("called %s with gate keeper %p device %p\n", __func__, s_gatekeeper, *device);
return 0;
}
static struct hw_module_methods_t gatekeeper_module_methods = {
.open = i9305_gatekeeper_open,
};
struct gatekeeper_module HAL_MODULE_INFO_SYM __attribute__((visibility("default"))) = {
.common = {
.tag = HARDWARE_MODULE_TAG,
.module_api_version = GATEKEEPER_MODULE_API_VERSION_0_1,
.hal_api_version = HARDWARE_HAL_API_VERSION,
.id = GATEKEEPER_HARDWARE_MODULE_ID,
.name = "I9305 GateKeeper HAL",
.author = "The Android Open Source Project",
.methods = &gatekeeper_module_methods,
.dso = 0,
.reserved = {}
},
};
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