1 files changed, 93 insertions, 0 deletions
diff --git a/print-rt6.c b/print-rt6.c
new file mode 100644
index 000000000000..35dbed981b0e
--- /dev/null
+++ b/print-rt6.c
@@ -0,0 +1,93 @@
+/*
+ * 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.
+ */
+
+/* \summary: IPv6 routing header printer */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <netdissect-stdinc.h>
+
+#include <string.h>
+
+#include "ip6.h"
+
+#include "netdissect.h"
+#include "addrtoname.h"
+#include "extract.h"
+
+int
+rt6_print(netdissect_options *ndo, register const u_char *bp, const u_char *bp2 _U_)
+{
+	register const struct ip6_rthdr *dp;
+	register const struct ip6_rthdr0 *dp0;
+	register const u_char *ep;
+	int i, len;
+	register const struct in6_addr *addr;
+
+	dp = (const struct ip6_rthdr *)bp;
+	len = dp->ip6r_len;
+
+	/* 'ep' points to the end of available data. */
+	ep = ndo->ndo_snapend;
+
+	ND_TCHECK(dp->ip6r_segleft);
+
+	ND_PRINT((ndo, "srcrt (len=%d", dp->ip6r_len));	/*)*/
+	ND_PRINT((ndo, ", type=%d", dp->ip6r_type));
+	ND_PRINT((ndo, ", segleft=%d", dp->ip6r_segleft));
+
+	switch (dp->ip6r_type) {
+	case IPV6_RTHDR_TYPE_0:
+	case IPV6_RTHDR_TYPE_2:			/* Mobile IPv6 ID-20 */
+		dp0 = (const struct ip6_rthdr0 *)dp;
+
+		ND_TCHECK(dp0->ip6r0_reserved);
+		if (dp0->ip6r0_reserved || ndo->ndo_vflag) {
+			ND_PRINT((ndo, ", rsv=0x%0x",
+			    EXTRACT_32BITS(&dp0->ip6r0_reserved)));
+		}
+
+		if (len % 2 == 1)
+			goto trunc;
+		len >>= 1;
+		addr = &dp0->ip6r0_addr[0];
+		for (i = 0; i < len; i++) {
+			if ((const u_char *)(addr + 1) > ep)
+				goto trunc;
+
+			ND_PRINT((ndo, ", [%d]%s", i, ip6addr_string(ndo, addr)));
+			addr++;
+		}
+		/*(*/
+		ND_PRINT((ndo, ") "));
+		return((dp0->ip6r0_len + 1) << 3);
+		break;
+	default:
+		goto trunc;
+		break;
+	}
+
+ trunc:
+	ND_PRINT((ndo, "[|srcrt]"));
+	return -1;
+}