| Igor Sarkisov | 108b973 | 2020-10-06 12:44:01 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 1988, 1989, 1990, 1991, 1993, 1994 |
| 3 | * The Regents of the University of California. All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that: (1) source code distributions |
| 7 | * retain the above copyright notice and this paragraph in its entirety, (2) |
| 8 | * distributions including binary code include the above copyright notice and |
| 9 | * this paragraph in its entirety in the documentation or other materials |
| 10 | * provided with the distribution, and (3) all advertising materials mentioning |
| 11 | * features or use of this software display the following acknowledgement: |
| 12 | * ``This product includes software developed by the University of California, |
| 13 | * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of |
| 14 | * the University nor the names of its contributors may be used to endorse |
| 15 | * or promote products derived from this software without specific prior |
| 16 | * written permission. |
| 17 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED |
| 18 | * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF |
| 19 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| 20 | */ |
| 21 | |
| 22 | #ifndef lint |
| 23 | static const char rcsid[] _U_ = |
| 24 | "@(#) $Header: /tcpdump/master/tcpdump/print-frag6.c,v 1.20 2005-04-20 22:33:06 guy Exp $"; |
| 25 | #endif |
| 26 | |
| 27 | #ifdef HAVE_CONFIG_H |
| 28 | #include "config.h" |
| 29 | #endif |
| 30 | |
| 31 | #ifdef INET6 |
| 32 | |
| 33 | #include <tcpdump-stdinc.h> |
| 34 | |
| 35 | #include <stdio.h> |
| 36 | |
| 37 | #include "ip6.h" |
| 38 | |
| 39 | #include "interface.h" |
| 40 | #include "addrtoname.h" |
| 41 | #include "extract.h" |
| 42 | |
| 43 | int |
| 44 | frag6_print(register const u_char *bp, register const u_char *bp2) |
| 45 | { |
| 46 | register const struct ip6_frag *dp; |
| 47 | register const struct ip6_hdr *ip6; |
| 48 | |
| 49 | dp = (const struct ip6_frag *)bp; |
| 50 | ip6 = (const struct ip6_hdr *)bp2; |
| 51 | |
| 52 | TCHECK(dp->ip6f_offlg); |
| 53 | |
| 54 | if (vflag) { |
| 55 | printf("frag (0x%08x:%d|%ld)", |
| 56 | EXTRACT_32BITS(&dp->ip6f_ident), |
| 57 | EXTRACT_16BITS(&dp->ip6f_offlg) & IP6F_OFF_MASK, |
| 58 | sizeof(struct ip6_hdr) + EXTRACT_16BITS(&ip6->ip6_plen) - |
| 59 | (long)(bp - bp2) - sizeof(struct ip6_frag)); |
| 60 | } else { |
| 61 | printf("frag (%d|%ld)", |
| 62 | EXTRACT_16BITS(&dp->ip6f_offlg) & IP6F_OFF_MASK, |
| 63 | sizeof(struct ip6_hdr) + EXTRACT_16BITS(&ip6->ip6_plen) - |
| 64 | (long)(bp - bp2) - sizeof(struct ip6_frag)); |
| 65 | } |
| 66 | |
| 67 | #if 1 |
| 68 | /* it is meaningless to decode non-first fragment */ |
| 69 | if ((EXTRACT_16BITS(&dp->ip6f_offlg) & IP6F_OFF_MASK) != 0) |
| 70 | return -1; |
| 71 | else |
| 72 | #endif |
| 73 | { |
| 74 | fputs(" ", stdout); |
| 75 | return sizeof(struct ip6_frag); |
| 76 | } |
| 77 | trunc: |
| 78 | fputs("[|frag]", stdout); |
| 79 | return -1; |
| 80 | #undef TCHECK |
| 81 | } |
| 82 | #endif /* INET6 */ |
