device.h

/*
 * Copyright (c) 2018 Nitrokey UG
 *
 * This file is part of Nitrokey HOTP verification project.
 *
 * Nitrokey HOTP verification is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * any later version.
 *
 * Nitrokey HOTP verification is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Nitrokey App. If not, see <http://www.gnu.org/licenses/>.
 *
 * SPDX-License-Identifier: GPL-3.0
 */

#ifndef NITROKEY_HOTP_VERIFICATION_DEVICE_H
#define NITROKEY_HOTP_VERIFICATION_DEVICE_H

#include <stdint.h>
#include <hidapi/hidapi.h>
#include "structs.h"

#define nullptr (NULL)
#define TEMPORARY_PASSWORD_LENGTH (25)


struct Device {
  hid_device * mp_devhandle;
  struct DeviceQuery packet_query;
  struct DeviceResponse packet_response;
  uint8_t user_temporary_password[TEMPORARY_PASSWORD_LENGTH];
  uint8_t admin_temporary_password[TEMPORARY_PASSWORD_LENGTH];
};

int device_connect(struct Device* dev, char *key_brand);
int device_disconnect(struct Device* dev);
struct ResponseStatus device_get_status(struct Device *dev);
int device_send(struct Device *dev, uint8_t *in_data, size_t data_size, uint8_t command_ID);
int device_receive(struct Device *dev, uint8_t *out_data, size_t out_buffer_size);
int device_send_buf(struct Device *dev, uint8_t command_ID);
int device_receive_buf(struct Device *dev);
const char * command_status_to_string(uint8_t status_code);


//private
void _device_clear_buffers(struct Device *dev);

#endif //NITROKEY_HOTP_VERIFICATION_DEVICE_H