diff options
Diffstat (limited to 'usr.sbin/tcpdump/print-frag6.c')
| -rw-r--r-- | usr.sbin/tcpdump/print-frag6.c | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/usr.sbin/tcpdump/print-frag6.c b/usr.sbin/tcpdump/print-frag6.c new file mode 100644 index 00000000000..df7e61299b1 --- /dev/null +++ b/usr.sbin/tcpdump/print-frag6.c @@ -0,0 +1,102 @@ +/* $OpenBSD: print-frag6.c,v 1.1 2000/04/26 21:35:40 jakob Exp $ */ + +/* + * Copyright (c) 1988, 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 lint +static const char rcsid[] = + "@(#) /master/usr.sbin/tcpdump/tcpdump/print-icmp.c,v 2.1 1995/02/03 18:14:42 polk Exp (LBL)"; +#endif + +#ifdef INET6 + +#include <sys/param.h> +#include <sys/time.h> +#include <sys/types.h> +#include <sys/socket.h> + +#include <net/if.h> + +#include <netinet/in.h> +#include <netinet/if_ether.h> +#include <netinet/in_systm.h> +#include <netinet/ip.h> +#include <netinet/ip_icmp.h> +#include <netinet/ip_var.h> +#include <netinet/udp.h> +#include <netinet/udp_var.h> +#include <netinet/tcp.h> + +#include <stdio.h> + +#include <netinet/ip6.h> + +#include "interface.h" +#include "addrtoname.h" + +int +frag6_print(register const u_char *bp, register const u_char *bp2) +{ + register const struct ip6_frag *dp; + register const struct ip6_hdr *ip6; + register const u_char *ep; + +#if 0 +#define TCHECK(var) if ((u_char *)&(var) >= ep - sizeof(var)) goto trunc +#endif + + dp = (struct ip6_frag *)bp; + ip6 = (struct ip6_hdr *)bp2; + + /* 'ep' points to the end of avaible data. */ + ep = snapend; + + TCHECK(dp->ip6f_offlg); + + if (vflag) { + printf("frag (0x%08x:%d|%ld)", + ntohl(dp->ip6f_ident), + ntohs(dp->ip6f_offlg & IP6F_OFF_MASK), + sizeof(struct ip6_hdr) + ntohs(ip6->ip6_plen) - + (long)(bp - bp2) - sizeof(struct ip6_frag)); + } else { + printf("frag (%d|%ld)", + ntohs(dp->ip6f_offlg & IP6F_OFF_MASK), + sizeof(struct ip6_hdr) + ntohs(ip6->ip6_plen) - + (long)(bp - bp2) - sizeof(struct ip6_frag)); + } + +#if 0 + /* it is meaningless to decode non-first fragment */ + if (ntohs(dp->ip6f_offlg & IP6F_OFF_MASK) != 0) + return 65535; + else +#endif + { + fputs(" ", stdout); + return sizeof(struct ip6_frag); + } +trunc: + fputs("[|frag]", stdout); + return 65535; +#undef TCHECK +} +#endif /* INET6 */ |