GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.sbin/tcpdump/print-frag6.c Lines: 0 15 0.0 %
Date: 2017-11-13 Branches: 0 6 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: print-frag6.c,v 1.8 2015/11/16 00:16:39 mmcc Exp $	*/
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/*
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 * Copyright (c) 1988, 1989, 1990, 1991, 1993, 1994
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that: (1) source code distributions
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 * retain the above copyright notice and this paragraph in its entirety, (2)
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 * distributions including binary code include the above copyright notice and
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 * this paragraph in its entirety in the documentation or other materials
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 * provided with the distribution, and (3) all advertising materials mentioning
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 * features or use of this software display the following acknowledgement:
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 * ``This product includes software developed by the University of California,
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 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
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 * the University nor the names of its contributors may be used to endorse
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 * or promote products derived from this software without specific prior
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 * written permission.
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 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
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 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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 */
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#ifdef INET6
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netinet/if_ether.h>
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#include <netinet/ip.h>
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#include <netinet/ip_icmp.h>
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#include <netinet/ip_var.h>
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#include <netinet/udp.h>
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#include <netinet/udp_var.h>
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#include <netinet/tcp.h>
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#include <stdio.h>
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#include <netinet/ip6.h>
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#include "interface.h"
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#include "addrtoname.h"
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int
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frag6_print(const u_char *bp, const u_char *bp2)
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{
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	const struct ip6_frag *dp;
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	const struct ip6_hdr *ip6;
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	const u_char *ep;
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#if 0
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#define TCHECK(var) if ((u_char *)&(var) >= ep - sizeof(var)) goto trunc
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#endif
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	dp = (struct ip6_frag *)bp;
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	ip6 = (struct ip6_hdr *)bp2;
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	/* 'ep' points to the end of avaible data. */
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	ep = snapend;
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	TCHECK(dp->ip6f_ident);
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	printf("frag (0x%08x:%ld@%d%s)",
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	    ntohl(dp->ip6f_ident),
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	    sizeof(struct ip6_hdr) + ntohs(ip6->ip6_plen) -
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		(long)(bp - bp2) - sizeof(struct ip6_frag),
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	    ntohs(dp->ip6f_offlg & IP6F_OFF_MASK),
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	    (dp->ip6f_offlg & IP6F_MORE_FRAG) ? "+" : "");
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	/* it is meaningless to decode non-first fragment */
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	if (ntohs(dp->ip6f_offlg & IP6F_OFF_MASK) != 0)
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		return 65535;
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	else
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	{
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		fputs(" ", stdout);
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		return sizeof(struct ip6_frag);
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	}
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trunc:
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	fputs("[|frag]", stdout);
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	return 65535;
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#undef TCHECK
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}
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#endif /* INET6 */