decode_rip.c

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/*
 * decode_rip.c
 *
 * Routing Information Protocol.
 *
 * Copyright (c) 2000 Dug Song <dugsong@monkey.org>
 *
 * $Id: decode_rip.c,v 1.4 2001/03/15 08:33:02 dugsong Exp $
 */
 
#include "config.h"
 
#include <sys/types.h>
 
#include <stdio.h>
#include <string.h>
 
#include "decode.h"
 
int
decode_rip(u_char *buf, int len, u_char *obuf, int olen)
{
    if (len < 21)
        return (0);
    
    /* Version 2 simple password authentication. */
    if (buf[1] != 2 || memcmp(buf + 4, "\xff\xff\x00\x02", 4) != 0)
        return (0);
    
    buf[20] = '\0';
    
    return (snprintf(obuf, olen, "%s\n", buf + 20));
}