X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/f6fa6a40d4156cdf5dea882024beb7b10d2412f1..f5c79aedbe9c52dad10a196d805718f55a2be17a:/print-domain.c

diff --git a/print-domain.c b/print-domain.c
index 498e9bc8..98eb3a5e 100644
--- a/print-domain.c
+++ b/print-domain.c
@@ -21,25 +21,17 @@
 
 #ifndef lint
 static const char rcsid[] =
-    "@(#) $Header: /tcpdump/master/tcpdump/print-domain.c,v 1.40 1999-10-17 21:37:11 mcr Exp $ (LBL)";
+    "@(#) $Header: /tcpdump/master/tcpdump/print-domain.c,v 1.55 2000-10-10 05:05:07 guy Exp $ (LBL)";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
 #endif
 
 #include <sys/param.h>
 #include <sys/time.h>
-#include <sys/socket.h>
-
-#if __STDC__
-struct mbuf;
-struct rtentry;
-#endif
-#include <net/if.h>
 
 #include <netinet/in.h>
-#include <netinet/if_ether.h>
-#include <netinet/in_systm.h>
-#include <netinet/ip.h>
-#include <netinet/udp.h>
-#include <netinet/tcp.h>
 
 #ifdef NOERROR
 #undef NOERROR					/* Solaris sucks */
@@ -47,9 +39,10 @@ struct rtentry;
 #ifdef NOERROR
 #undef T_UNSPEC					/* SINIX does too */
 #endif
-#include <arpa/nameser.h>
+#include "nameser.h"
 
 #include <stdio.h>
+#include <string.h>
 
 #include "interface.h"
 #include "addrtoname.h"
@@ -98,6 +91,27 @@ struct rtentry;
 #ifndef T_LOC
 #define T_LOC		29		/* Location Information */
 #endif
+#ifndef T_NXT
+#define T_NXT		30		/* Next Valid Name in Zone */
+#endif
+#ifndef T_EID
+#define T_EID		31		/* Endpoint identifier */
+#endif
+#ifndef T_NIMLOC
+#define T_NIMLOC	32		/* Nimrod locator */
+#endif
+#ifndef T_SRV
+#define T_SRV		33		/* Server selection */
+#endif
+#ifndef T_ATMA
+#define T_ATMA		34		/* ATM Address */
+#endif
+#ifndef T_NAPTR
+#define T_NAPTR		35		/* Naming Authority PoinTeR */
+#endif
+#ifndef T_A6
+#define T_A6		38		/* IP6 address (ipngwg-dns-lookups) */
+#endif
 
 #ifndef T_UNSPEC
 #define T_UNSPEC	103		/* Unspecified format (binary data) */
@@ -148,8 +162,11 @@ ns_nprint(register const u_char *cp, register const u_char *bp)
 	register u_int i;
 	register const u_char *rp;
 	register int compress;
+	int chars_processed;
+	int data_size = snapend - bp;
 
 	i = *cp++;
+	chars_processed = 1;
 	rp = cp + i;
 	if ((i & INDIR_MASK) == INDIR_MASK) {
 		rp = cp + 1;
@@ -161,13 +178,29 @@ ns_nprint(register const u_char *cp, register const u_char *bp)
 			if ((i & INDIR_MASK) == INDIR_MASK) {
 				cp = bp + (((i << 8) | *cp) & 0x3fff);
 				i = *cp++;
+				chars_processed++;
+
+				/*
+				 * If we've looked at every character in
+				 * the message, this pointer will make
+				 * us look at some character again,
+				 * which means we're looping.
+				 */
+				if (chars_processed >= data_size) {
+					fn_printn(cp, 6, (u_char *)"<LOOP>");
+					if (!compress)
+						rp += i + 1;
+					return (rp);
+				}
 				continue;
 			}
 			if (fn_printn(cp, i, snapend))
 				break;
 			cp += i;
+			chars_processed += i;
 			putchar('.');
 			i = *cp++;
+			chars_processed++;
 			if (!compress)
 				rp += i + 1;
 		}
@@ -216,7 +249,14 @@ static struct tok type2str[] = {
 	{ T_PX,		"PX" },
 	{ T_GPOS,	"GPOS" },
 	{ T_AAAA,	"AAAA" },
-	{ T_LOC ,	"LOC " },
+	{ T_LOC,	"LOC " },
+	{ T_NXT,	"NXT " },
+	{ T_EID,	"EID " },
+	{ T_NIMLOC,	"NIMLOC " },
+	{ T_SRV,	"SRV " },
+	{ T_ATMA,	"ATMA " },
+	{ T_NAPTR,	"NAPTR " },
+	{ T_A6,		"A6 " },
 #ifndef T_UINFO
 #define T_UINFO 100
 #endif
@@ -314,6 +354,9 @@ ns_rprint(register const u_char *cp, register const u_char *bp)
 	case T_NS:
 	case T_CNAME:
 	case T_PTR:
+#ifdef T_DNAME
+	case T_DNAME:	/*XXX not checked as there's no server support yet*/
+#endif
 		putchar(' ');
 		(void)ns_nprint(cp, bp);
 		break;
@@ -329,6 +372,25 @@ ns_rprint(register const u_char *cp, register const u_char *bp)
 		(void)ns_cprint(cp, bp);
 		break;
 
+#ifdef INET6
+	case T_AAAA:
+		printf(" %s", ip6addr_string(cp));
+		break;
+
+	case T_A6:	/*XXX not checked as there's no server support yet*/
+	    {
+		struct in6_addr a;
+		int pbyte;
+
+		pbyte = (*cp + 7) / 8;
+		memset(&a, 0, sizeof(a));
+		memcpy(&a, cp + 1, pbyte);
+		printf(" %u %s ", *cp, ip6addr_string(&a));
+		(void)ns_nprint(cp + 1 + pbyte, bp);
+		break;
+	    }
+#endif /*INET6*/
+
 	case T_UNSPECA:		/* One long string */
 	        printf(" %.*s", len, cp);
 		break;
@@ -350,15 +412,17 @@ ns_print(register const u_char *bp, u_int length)
 	nscount = ntohs(np->nscount);
 	arcount = ntohs(np->arcount);
 
-	if (np->qr) {
+	if (DNS_QR(np)) {
 		/* this is a response */
-		printf(" %d%s%s%s%s%s",
+		printf(" %d%s%s%s%s%s%s",
 			ntohs(np->id),
-			ns_ops[np->opcode],
-			ns_resp[np->rcode],
-			np->aa? "*" : "",
-			np->ra? "" : "-",
-			np->tc? "|" : "");
+			ns_ops[DNS_OPCODE(np)],
+			ns_resp[DNS_RCODE(np)],
+			DNS_AA(np)? "*" : "",
+			DNS_RA(np)? "" : "-",
+			DNS_TC(np)? "|" : "",
+			DNS_CD(np)? "%" : "");
+
 		if (qdcount != 1)
 			printf(" [%dq]", qdcount);
 		/* Print QUESTION section on -vv */
@@ -378,16 +442,17 @@ ns_print(register const u_char *bp, u_int length)
 	}
 	else {
 		/* this is a request */
-		printf(" %d%s%s",
+		printf(" %d%s%s%s",
 		        ntohs(np->id),
-			ns_ops[np->opcode],
-			np->rd? "+" : "");
+			ns_ops[DNS_OPCODE(np)],
+			DNS_RD(np)? "+" : "",
+			DNS_AD(np)? "$" : "");
 
 		/* any weirdness? */
-		if (*(((u_short *)np)+1) & htons(0x6ff))
+		if (*(((u_short *)np)+1) & htons(0x6cf))
 			printf(" [b2&3=0x%x]", ntohs(*(((u_short *)np)+1)));
 
-		if (np->opcode == IQUERY) {
+		if (DNS_OPCODE(np) == IQUERY) {
 			if (qdcount)
 				printf(" [%dq]", qdcount);
 			if (ancount != 1)