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/**
******************************************************************************
* @file LwIP/LwIP_TFTP_Server/Inc/tftpserver.h
* @author MCD Application Team
* @brief This file is the header of tftpserver file.
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
#ifndef __TFTPSERVER_H_
#define __TFTPSERVER_H_
#include "lwip/mem.h"
#include "lwip/udp.h"
#define TFTP_OPCODE_LEN 2
#define TFTP_BLKNUM_LEN 2
#define TFTP_DATA_LEN_MAX 512
#define TFTP_DATA_PKT_HDR_LEN (TFTP_OPCODE_LEN + TFTP_BLKNUM_LEN)
#define TFTP_ERR_PKT_HDR_LEN (TFTP_OPCODE_LEN + TFTP_ERRCODE_LEN)
#define TFTP_ACK_PKT_LEN (TFTP_OPCODE_LEN + TFTP_BLKNUM_LEN)
#define TFTP_DATA_PKT_LEN_MAX (TFTP_DATA_PKT_HDR_LEN + TFTP_DATA_LEN_MAX)
#define TFTP_MAX_RETRIES 3
#define TFTP_TIMEOUT_INTERVAL 5
typedef struct
{
int op; /*WRQ */
/* last block read */
char data[TFTP_DATA_PKT_LEN_MAX];
int data_len;
/* destination ip:port */
ip_addr_t to_ip;
int to_port;
/* next block number */
int block;
/* total number of bytes transferred */
int tot_bytes;
/* timer interrupt count when last packet was sent */
/* this should be used to resend packets on timeout */
unsigned long long last_time;
}tftp_connection_args;
/* TFTP opcodes as specified in RFC1350 */
typedef enum {
TFTP_RRQ = 1,
TFTP_WRQ = 2,
TFTP_DATA = 3,
TFTP_ACK = 4,
TFTP_ERROR = 5
} tftp_opcode;
/* TFTP error codes as specified in RFC1350 */
typedef enum {
TFTP_ERR_NOTDEFINED,
TFTP_ERR_FILE_NOT_FOUND,
TFTP_ERR_ACCESS_VIOLATION,
TFTP_ERR_DISKFULL,
TFTP_ERR_ILLEGALOP,
TFTP_ERR_UKNOWN_TRANSFER_ID,
TFTP_ERR_FILE_ALREADY_EXISTS,
TFTP_ERR_NO_SUCH_USER,
} tftp_errorcode;
void IAP_tftpd_init(void);
#endif