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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 */ |