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, 111 insertions, 0 deletions

diff --git a/print-ipcomp.c b/print-ipcomp.c
new file mode 100644
index 00000000..ed2f49d0
--- /dev/null
+++ b/print-ipcomp.c
@@ -0,0 +1,111 @@
+/*
+ * 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
+
+#include <string.h>
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+
+#include <net/route.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>
+
+#ifdef INET6
+#include <netinet/ip6.h>
+#endif
+#ifdef HAVE_NETINET6_IPCOMP_H
+#include <netinet6/ipcomp.h>
+#else
+struct ipcomp {
+	u_int8_t comp_nxt;	/* Next Header */
+	u_int8_t comp_flags;	/* Length of data, in 32bit */
+	u_int16_t comp_cpi;	/* Compression parameter index */
+};
+#endif
+
+#if defined(HAVE_LIBZ) && defined(HAVE_ZLIB_H)
+#include <zlib.h>
+#endif
+
+#include "interface.h"
+#include "addrtoname.h"
+
+int
+ipcomp_print(register const u_char *bp, register const u_char *bp2, int *nhdr)
+{
+	register const struct ipcomp *ipcomp;
+	register const u_char *ep;
+	u_int16_t cpi;
+#if defined(HAVE_LIBZ) && defined(HAVE_ZLIB_H)
+	int advance;
+#endif
+
+	ipcomp = (struct ipcomp *)bp;
+	cpi = (u_int16_t)ntohs(ipcomp->comp_cpi);
+
+	/* 'ep' points to the end of avaible data. */
+	ep = snapend;
+
+	if ((u_char *)(ipcomp + 1) >= ep - sizeof(struct ipcomp)) {
+		fputs("[|IPCOMP]", stdout);
+		goto fail;
+	}
+	printf("IPComp(cpi=%u)", cpi);
+
+#if defined(HAVE_LIBZ) && defined(HAVE_ZLIB_H)
+	if (1)
+		goto fail;
+
+	/*
+	 * We may want to decompress the packet here.  Packet buffer
+	 * management is a headache (if we decompress, packet will become
+	 * larger).
+	 */
+	if (nhdr)
+		*nhdr = ipcomp->comp_nxt;
+	advance = sizeof(struct ipcomp);
+
+	printf(": ");
+	return advance;
+
+#endif
+fail:
+	if (nhdr)
+		*nhdr = -1;
+	return 65536;
+}