Bring in KAME IPv6 tcpdump. replaces esp/ah/isakmp decoder.

Hope I did not break anything.  Portability on IPv4-only node needs checking,
I'll do this very soon.  (sorry for rather jumbo commit)

XXx what is _FAVOR_BSD?

1 files changed, 100 insertions, 0 deletions

diff --git a/print-frag6.c b/print-frag6.c
new file mode 100644
index 00000000..6a85cfe2
--- /dev/null
+++ b/print-frag6.c
@@ -0,0 +1,100 @@
+/*
+ * 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|%d)",
+		       ntohl(dp->ip6f_ident),
+		       ntohs(dp->ip6f_offlg & IP6F_OFF_MASK),
+		       sizeof(struct ip6_hdr) + ntohs(ip6->ip6_plen) -
+			       (bp - bp2) - sizeof(struct ip6_frag));
+	} else {
+		printf("frag (%d|%d)",
+		       ntohs(dp->ip6f_offlg & IP6F_OFF_MASK),
+		       sizeof(struct ip6_hdr) + ntohs(ip6->ip6_plen) -
+			       (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 */