initial import of NetBSD tree

1 files changed, 276 insertions, 0 deletions

diff --git a/usr.sbin/tcpdump/print-domain.c b/usr.sbin/tcpdump/print-domain.c
new file mode 100644
index 00000000000..bc2cab3db3e
--- /dev/null
+++ b/usr.sbin/tcpdump/print-domain.c
@@ -0,0 +1,276 @@
+/*
+ * Copyright (c) 1988, 1989, 1990, 1991, 1992, 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 char rcsid[] =
+    "@(#) Header: print-domain.c,v 1.23 94/06/14 20:17:38 leres Exp (LBL)";
+#endif
+
+#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_var.h>
+#include <netinet/udp.h>
+#include <netinet/udp_var.h>
+#include <netinet/tcp.h>
+#include <netinet/tcpip.h>
+
+#undef NOERROR					/* Solaris sucks */
+#include <arpa/nameser.h>
+
+#include <stdio.h>
+
+#include "interface.h"
+#include "addrtoname.h"
+
+static char *ns_ops[] = {
+	"", " inv_q", " stat", " op3", " op4", " op5", " op6", " op7",
+	" op8", " updataA", " updateD", " updateDA",
+	" updateM", " updateMA", " zoneInit", " zoneRef",
+};
+
+static char *ns_resp[] = {
+	"", " FormErr", " ServFail", " NXDomain",
+	" NotImp", " Refused", " Resp6", " Resp7",
+	" Resp8", " Resp9", " Resp10", " Resp11",
+	" Resp12", " Resp13", " Resp14", " NoChange",
+};
+
+/* skip over a domain name */
+static const u_char *
+ns_nskip(register const u_char *cp)
+{
+	register u_char i;
+
+	if (((i = *cp++) & 0xc0) == 0xc0)
+		return (cp + 1);
+	while (i) {
+		cp += i;
+		i = *cp++;
+	}
+	return (cp);
+}
+
+/* print a domain name */
+static void
+ns_nprint(register const u_char *cp, register const u_char *bp,
+	  register const u_char *ep)
+{
+	register u_int i;
+
+	putchar(' ');
+	if ((i = *cp++) != 0)
+		while (i && cp < ep) {
+			if ((i & 0xc0) == 0xc0) {
+				cp = bp + (((i << 8) | *cp) & 0x3fff);
+				i = *cp++;
+				continue;
+			}
+			do {
+				putchar(*cp++);
+			} while (--i);
+			putchar('.');
+			i = *cp++;
+		}
+	else
+		putchar('.');
+}
+
+static struct token type2str[] = {
+	{ T_A,		"A" },
+	{ T_NS,		"NS" },
+	{ T_MD,		"MD" },
+	{ T_MF,		"MF" },
+	{ T_CNAME,	"CNAME" },
+	{ T_SOA,	"SOA" },
+	{ T_MB,		"MB" },
+	{ T_MG,		"MG" },
+	{ T_MR,		"MR" },
+	{ T_NULL,	"NULL" },
+	{ T_WKS,	"WKS" },
+	{ T_PTR,	"PTR" },
+	{ T_HINFO,	"HINFO" },
+	{ T_MINFO,	"MINFO" },
+	{ T_MX,		"MX" },
+	{ T_UINFO,	"UINFO" },
+	{ T_UID,	"UID" },
+	{ T_GID,	"GID" },
+#ifdef T_UNSPEC
+	{ T_UNSPEC,	"UNSPEC" },
+#endif
+	{ T_AXFR,	"AXFR" },
+	{ T_MAILB,	"MAILB" },
+	{ T_MAILA,	"MAILA" },
+	{ T_ANY,	"ANY" },
+	{ 0,		NULL }
+};
+
+/* print a query */
+static void
+ns_qprint(register const u_char *cp, register const u_char *bp,
+	  register const u_char *ep)
+{
+	const u_char *np = cp;
+	register u_int i;
+
+	cp = ns_nskip(cp);
+
+	if (cp + 4 > ep)
+		return;
+
+	/* print the qtype and qclass (if it's not IN) */
+	i = *cp++ << 8;
+	i |= *cp++;
+	printf(" %s", tok2str(type2str, "Type%d", i));
+	i = *cp++ << 8;
+	if ((i |= *cp++) != C_IN)
+		if (i == C_ANY)
+			printf("(c_any)");
+		else
+			printf("(Class %d)", i);
+
+	putchar('?');
+	ns_nprint(np, bp, ep);
+}
+
+
+/* print a reply */
+static void
+ns_rprint(register const u_char *cp, register const u_char *bp,
+	  register const u_char *ep)
+{
+	register u_int i;
+	u_short typ;
+
+	cp = ns_nskip(cp);
+
+	if (cp + 10 > ep)
+		return;
+
+	/* print the type/qtype and class (if it's not IN) */
+	typ = *cp++ << 8;
+	typ |= *cp++;
+	i = *cp++ << 8;
+	if ((i |= *cp++) != C_IN)
+		if (i == C_ANY)
+			printf("(c_any)");
+		else
+			printf("(Class %d)", i);
+
+	/* ignore ttl & len */
+	cp += 6;
+	printf(" %s", tok2str(type2str, "Type%d", typ));
+	switch (typ) {
+
+	case T_A:
+		printf(" %s", ipaddr_string(cp));
+		break;
+
+	case T_NS:
+	case T_CNAME:
+	case T_PTR:
+		ns_nprint(cp, bp, ep);
+		break;
+
+	case T_MX:
+		ns_nprint(cp+2, bp, ep);
+#ifndef TCPDUMP_ALIGN
+		printf(" %d", *(short *)cp);
+#else
+		{
+		    u_short x = *cp | cp[1] << 8;
+		    printf(" %d", ntohs(x));
+		}
+#endif
+		break;
+	}
+}
+
+void
+ns_print(register const u_char *bp, int length)
+{
+	register const HEADER *np;
+	int qdcount, ancount, nscount, arcount;
+	const u_char *ep = snapend;
+
+	np = (const HEADER *)bp;
+	/* get the byte-order right */
+	qdcount = ntohs(np->qdcount);
+	ancount = ntohs(np->ancount);
+	nscount = ntohs(np->nscount);
+	arcount = ntohs(np->arcount);
+
+	if (np->qr) {
+		/* this is a response */
+		printf(" %d%s%s%s%s%s",
+			ntohs(np->id),
+			ns_ops[np->opcode],
+			ns_resp[np->rcode],
+			np->aa? "*" : "",
+			np->ra? "" : "-",
+			np->tc? "|" : "");
+		if (qdcount != 1)
+			printf(" [%dq]", qdcount);
+		printf(" %d/%d/%d", ancount, nscount, arcount);
+		if (ancount)
+			ns_rprint(ns_nskip((const u_char *)(np + 1)) + 4,
+				  (const u_char *)np, ep);
+	}
+	else {
+		/* this is a request */
+		printf(" %d%s%s",
+		        ntohs(np->id),
+			ns_ops[np->opcode],
+			np->rd? "+" : "");
+
+		/* any weirdness? */
+		if (*(((u_short *)np)+1) & htons(0x6ff))
+			printf(" [b2&3=0x%x]", ntohs(*(((u_short *)np)+1)));
+
+		if (np->opcode == IQUERY) {
+			if (qdcount)
+				printf(" [%dq]", qdcount);
+			if (ancount != 1)
+				printf(" [%da]", ancount);
+		}
+		else {
+			if (ancount)
+				printf(" [%da]", ancount);
+			if (qdcount != 1)
+				printf(" [%dq]", qdcount);
+		}
+		if (nscount)
+			printf(" [%dn]", nscount);
+		if (arcount)
+			printf(" [%dau]", arcount);
+
+		ns_qprint((const u_char *)(np + 1), (const u_char *)np, ep);
+	}
+	printf(" (%d)", length);
+}