/* * Copyright (c) 1989, 1990, 1991, 1993, 1994 *	The Regents of the University of California.  All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that: (1) source code distributions * retain the above copyright notice and this paragraph in its entirety, (2) * distributions including binary code include the above copyright notice and * this paragraph in its entirety in the documentation or other materials * provided with the distribution, and (3) all advertising materials mentioning * features or use of this software display the following acknowledgement: * ``This product includes software developed by the University of California, * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of * the University nor the names of its contributors may be used to endorse * or promote products derived from this software without specific prior * written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */#ifndef lintstatic const char rcsid[] _U_ =    "@(#) $Header: /tcpdump/master/tcpdump/print-ripng.c,v 1.18 2005-01-04 00:15:54 guy Exp $";#endif#ifdef HAVE_CONFIG_H#include "config.h"#endif#ifdef INET6#include <tcpdump-stdinc.h>#include <stdio.h>#include "route6d.h"#include "interface.h"#include "addrtoname.h"#include "extract.h"#if !defined(IN6_IS_ADDR_UNSPECIFIED) && !defined(_MSC_VER) /* MSVC inline */static int IN6_IS_ADDR_UNSPECIFIED(const struct in6_addr *addr){    static const struct in6_addr in6addr_any;        /* :: */    return (memcmp(addr, &in6addr_any, sizeof(*addr)) == 0);}#endifstatic intrip6_entry_print(register const struct netinfo6 *ni, int metric){	int l;	l = printf("%s/%d", ip6addr_string(&ni->rip6_dest), ni->rip6_plen);	if (ni->rip6_tag)		l += printf(" [%d]", EXTRACT_16BITS(&ni->rip6_tag));	if (metric)		l += printf(" (%d)", ni->rip6_metric);	return l;}voidripng_print(const u_char *dat, unsigned int length){	register const struct rip6 *rp = (struct rip6 *)dat;	register const struct netinfo6 *ni;	register u_int amt;	register u_int i;	int j;	int trunc;	if (snapend < dat)		return;	amt = snapend - dat;	i = min(length, amt);	if (i < (sizeof(struct rip6) - sizeof(struct netinfo6)))		return;	i -= (sizeof(struct rip6) - sizeof(struct netinfo6));	switch (rp->rip6_cmd) {	case RIP6_REQUEST:		j = length / sizeof(*ni);		if (j == 1		    &&  rp->rip6_nets->rip6_metric == HOPCNT_INFINITY6		    &&  IN6_IS_ADDR_UNSPECIFIED(&rp->rip6_nets->rip6_dest)) {			printf(" ripng-req dump");			break;		}		if (j * sizeof(*ni) != length - 4)			printf(" ripng-req %d[%u]:", j, length);		else			printf(" ripng-req %d:", j);		trunc = ((i / sizeof(*ni)) * sizeof(*ni) != i);		for (ni = rp->rip6_nets; i >= sizeof(*ni);		    i -= sizeof(*ni), ++ni) {			if (vflag > 1)				printf("\n\t");			else				printf(" ");			rip6_entry_print(ni, 0);		}		break;	case RIP6_RESPONSE:		j = length / sizeof(*ni);		if (j * sizeof(*ni) != length - 4)			printf(" ripng-resp %d[%u]:", j, length);		else			printf(" ripng-resp %d:", j);		trunc = ((i / sizeof(*ni)) * sizeof(*ni) != i);		for (ni = rp->rip6_nets; i >= sizeof(*ni);		    i -= sizeof(*ni), ++ni) {			if (vflag > 1)				printf("\n\t");			else				printf(" ");			rip6_entry_print(ni, ni->rip6_metric);		}		if (trunc)			printf("[|ripng]");		break;	default:		printf(" ripng-%d ?? %u", rp->rip6_cmd, length);		break;	}	if (rp->rip6_vers != RIP6_VERSION)		printf(" [vers %d]", rp->rip6_vers);}#endif /* INET6 */