X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/837483ffe51f450ae963d83e934902890655c9dd..refs/pull/482/head:/print-rt6.c

diff --git a/print-rt6.c b/print-rt6.c
index ecf58f1a..231f5ff4 100644
--- a/print-rt6.c
+++ b/print-rt6.c
@@ -19,93 +19,81 @@
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
 
-#ifndef lint
-static const char rcsid[] =
-    "@(#) $Header: /tcpdump/master/tcpdump/print-rt6.c,v 1.8 2000-05-10 05:13:20 itojun Exp $";
-#endif
-
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 
-#ifdef INET6
-
-#include <sys/param.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/socket.h>
+#include <netdissect-stdinc.h>
 
-#include <net/if.h>
+#include <string.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 "ip6.h"
 
-#include <stdio.h>
-
-#include <netinet/ip6.h>
-
-#include "interface.h"
+#include "netdissect.h"
 #include "addrtoname.h"
+#include "extract.h"
 
 int
-rt6_print(register const u_char *bp, register const u_char *bp2)
+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 struct ip6_hdr *ip;
 	register const u_char *ep;
 	int i, len;
+	register const struct in6_addr *addr;
+	const struct in6_addr *last_addr = NULL;
 
-	dp = (struct ip6_rthdr *)bp;
-	ip = (struct ip6_hdr *)bp2;
+	dp = (const struct ip6_rthdr *)bp;
 	len = dp->ip6r_len;
 
-	/* 'ep' points to the end of avaible data. */
-	ep = snapend;
+	/* 'ep' points to the end of available data. */
+	ep = ndo->ndo_snapend;
 
-#if 0
-	printf("%s > %s: ",
-	       ip6addr_string(&ip->ip6_src),
-	       ip6addr_string(&ip->ip6_dst));
-#endif
+	ND_TCHECK(dp->ip6r_segleft);
 
-	TCHECK(dp->ip6r_segleft);
-
-	printf("srcrt (len=%d", dp->ip6r_len);	/*)*/
-	printf(", type=%d", dp->ip6r_type);
-	printf(", segleft=%d", 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) {
+#ifndef IPV6_RTHDR_TYPE_0
+#define IPV6_RTHDR_TYPE_0 0
+#endif
+#ifndef IPV6_RTHDR_TYPE_2
+#define IPV6_RTHDR_TYPE_2 2
+#endif
 	case IPV6_RTHDR_TYPE_0:
-		dp0 = (struct ip6_rthdr0 *)dp;
+	case IPV6_RTHDR_TYPE_2:			/* Mobile IPv6 ID-20 */
+		dp0 = (const struct ip6_rthdr0 *)dp;
 
-		TCHECK(dp0->ip6r0_reserved);
-		if (dp0->ip6r0_reserved || vflag) {
-			printf(", rsv=0x%0x",
-			    (u_int32_t)ntohl(dp0->ip6r0_reserved));
+		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++) {
-			struct in6_addr *addr;
-
-			addr = ((struct in6_addr *)(dp0 + 1)) + i;
-			if ((u_char *)addr > ep - sizeof(*addr))
+			if ((const u_char *)(addr + 1) > ep)
 				goto trunc;
 
-			printf(", [%d]%s", i, ip6addr_string((u_char *)addr));
+			ND_PRINT((ndo, ", [%d]%s", i, ip6addr_string(ndo, addr)));
+			last_addr = addr;
+			addr++;
+		}
+		/*
+		 * the destination address used in the pseudo-header is that of the final
+		 * destination : the last address of the routing header
+		 */
+		if (last_addr != NULL) {
+			const struct ip6_hdr *ip6 = (const struct ip6_hdr *)bp2;
+			UNALIGNED_MEMCPY(&ip6->ip6_dst, last_addr, sizeof (struct in6_addr));
 		}
 		/*(*/
-		printf(") ");
+		ND_PRINT((ndo, ") "));
 		return((dp0->ip6r0_len + 1) << 3);
 		break;
 	default:
@@ -114,7 +102,6 @@ rt6_print(register const u_char *bp, register const u_char *bp2)
 	}
 
  trunc:
-	fputs("[|srcrt]", stdout);
-	return 65535;		/* XXX */
+	ND_PRINT((ndo, "[|srcrt]"));
+	return -1;
 }
-#endif /* INET6 */