tftp.c

来自「嵌入式RMON,RMON为Remote monitor的缩写,基于SNMP为网络」· C语言 代码 · 共 172 行

/* Beholder RMON ethernet network monitor,Copyright (C) 1993 DNPAP group */
/* See file COPYING 'GNU General Public Licence' for copyright details   */
#include <chain.h>
#include <udp.h>
#include "tftp.h"



struct _TFTP_DESCR
{
    UDP_DESCR   *udp;
    FILE        *file;
    WORD        block;
}



struct _TFTP_REQUEST
{
    BYTE    *name;
    BYTE    *mode;
};

struct _TFTP_DATA
{
    WORD    block;
    BYTE    *data;
};

struct _TFTP_ACK
{
    WORD    block;
};

struct _TFTP_ERROR
{
    WORD    code;
    BYTE    *message;
}


static BOOLEAN Rcve(UDP_DESCR *descr, CHAIN *chain, UDP_HDR *udpHdr, IP_HDR *ipHdr);



UDP_DESCR tftpUdp =
{
    Rcve,
    69,
    UDP_ADDR_ANY,
    UDP_PORT_ANY,
    UDP_ADDR_ANY,
    0
};

TFTP_STAT tftpStat;


BOOLEAN TftpInit(void)
{
    static BOOLEAN init = FALSE;
    
    if (!init)
    {
        init = UdpRegister(&tftpUdp);
    }

    return init;
}



static BOOLEAN RcveServer(UDP_DESCR *descr, CHAIN *chain, UDP_HDR *udpHdr, IP_HDR *ipHdr)
{
    new = chain;
    h   = ChainPop(&new, -1);
    if (h!=0)
    {
        
        switch ()
        
        
        
        
        if (new!=chain)
            ChainFree(new);
    }
        return FALSE;

    code = IpN2HWord(h);
    switch (code)
    {

    }


    {

    }
    {

    }
    if ()
}





static BOOLEAN RcveRead(UDP_DESCR *descr, CHAIN *chain, UDP_HDR *udpHdr, IP_HDR *ipHdr)
{
    h = ChainPop(&new, 2);
    if (h!=0)
        opcode = IpN2HWord(*h);
    switch (opcode)
    {
        case TFTP_ACK:
            
            new = AckDecode(chain, &ack);
            if (new != 0)
            {
                if (ack.block > tftp->block)
                    fread

            }
        case TFTP_ERROR:
        case TFTP_READ:
        case TFTP_WRITE:
        case TFTP_DATA:


    }
    
    if(
    {

    }
}




static BOOLEAN RcveWrite(CHAIN *chain, UDP_HDR *udpHdr, IP_HDR *ipHdr)
{

}
























HdrDecode