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/****************************************************************************
** File: payload.c
**
** Author: Mike Borella
**
** Comments: Dump packet payload
**
*****************************************************************************/
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <arpa/inet.h>
#include "config.h"
#include "payload.h"
#define BUF_SIZE 128
extern u_char *packet_end;
/*----------------------------------------------------------------------------
**
** dump_payload()
**
** Dump printable portions of packet payload
**
**----------------------------------------------------------------------------
*/
void dump_payload(u_char *bp, int length)
{
u_char *ep = bp + length;
char *buf_ptr, *buf_end;
int col;
int i;
char hexbuf[BUF_SIZE], charbuf[BUF_SIZE];
/*
* Make sure we don't run off the end of the packet
*/
if (ep > packet_end)
ep = packet_end;
printf("-----------------------------------------------------------------\n");
buf_ptr = bp;
buf_end = ep;
do
{
col = 0;
memset(hexbuf, 0, BUF_SIZE);
memset(charbuf, 0, BUF_SIZE);
for(i=0;i<16;i++)
{
if(buf_ptr < buf_end)
{
snprintf(hexbuf+(i*3), BUF_SIZE-1,"%.2X ",buf_ptr[0] & 0xFF);
if(*buf_ptr > 0x1F && *buf_ptr < 0x7E)
snprintf(charbuf+i+col, BUF_SIZE-1,"%c",buf_ptr[0]);
else
snprintf(charbuf+i+col, BUF_SIZE-1, ".");
buf_ptr++;
}
}
printf("%-48s %s\n",hexbuf,charbuf);
}
while(buf_ptr < buf_end);
}
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