/* $Id: tftp.h 41970 2012-06-29 05:55:17Z vboxsync $ */
/** @file
 * NAT - TFTP server (declarations/defines).
 */

/*
 * Copyright (C) 2006-2010 Oracle Corporation
 *
 * This file is part of VirtualBox Open Source Edition (OSE), as
 * available from http://www.virtualbox.org. This file is free software;
 * you can redistribute it and/or modify it under the terms of the GNU
 * General Public License (GPL) as published by the Free Software
 * Foundation, in version 2 as it comes in the "COPYING" file of the
 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
 */

/* tftp defines */

#define TFTP_SESSIONS_MAX 3

#define TFTP_SERVER     69

#define TFTP_RRQ    1
#define TFTP_WRQ    2
#define TFTP_DATA   3
#define TFTP_ACK    4
#define TFTP_ERROR  5
#define TFTP_OACK   6

#define TFTP_FILENAME_MAX 512

#if 0
struct tftp_t
{
    struct ip ip;
    struct udphdr udp;
    u_int16_t tp_op;
    union
    {
        struct
        {
            u_int16_t tp_block_nr;
            u_int8_t  tp_buf[512];
        } tp_data;
        struct
        {
            u_int16_t tp_error_code;
            u_int8_t  tp_msg[512];
        } tp_error;
        u_int8_t tp_buf[512 + 2];
    } x;
};
#else
#pragma pack(0)
typedef struct TFTPCOREHDR
{
    uint16_t    u16TftpOpCode;
#if 0
    union {
        uint16_t u16BlockNum;
        uint16_t u16TftpErrorCode;
    } X;
#endif
    /* Data lays here (might be raw uint8_t* or header of payload ) */
} TFTPCOREHDR, *PTFTPCOREHDR;

typedef struct TFTPIPHDR
{
    struct ip       IPv4Hdr;
    struct udphdr   UdpHdr;
    uint16_t        u16TftpOpType;
    TFTPCOREHDR     Core;
    /* Data lays here */
} TFTPIPHDR, *PTFTPIPHDR;
#pragma pack()

typedef const PTFTPIPHDR PCTFTPIPHDR;
#endif

void tftp_input(PNATState pData, struct mbuf *m);