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/****************************************************************************
** File: payload.c
**
** Author: Mike Borella
**
** Comments: Dump packet payload
**
*****************************************************************************/
#include <stdio.h>
#include <unistd.h>
#include <arpa/inet.h>
#include "config.h"
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;
u_char *p;
int col;
static char last = 0;
/*
* Make sure we don't run off the end of the packet
*/
if (ep > packet_end) ep = packet_end;
/*
* Print 64 bytes at a time, using .'s for "unprintable" chars.
*/
col = 0;
p = bp;
printf("----------------------------------------------------------\n");
while (p < ep)
{
if (*p < ' ' || *p > '~')
{
/*
* Eventually expand this and put it somewhere else?
*/
switch (*p)
{
case 10:
printf("<LF>");
col += 3;
break;
case 13:
printf("<CR>");
col += 3;
break;
default:
putchar('.');
break;
}
}
else
putchar(*p);
last = *p;
/*
* Make sure that we only print 64 columns of chars
*/
col++;
if (col >= 64)
{
putchar('\n');
col = 0;
}
p++;
}
putchar('\n');
}
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