initial import of NetBSD tree

1 files changed, 217 insertions, 0 deletions

diff --git a/usr.sbin/tcpdump/print-icmp.c b/usr.sbin/tcpdump/print-icmp.c
new file mode 100644
index 00000000000..e4154315b4c
--- /dev/null
+++ b/usr.sbin/tcpdump/print-icmp.c
@@ -0,0 +1,217 @@
+/*	$NetBSD: print-icmp.c,v 1.3 1995/03/06 19:11:13 mycroft Exp $	*/
+
+/*
+ * 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 char rcsid[] =
+    "@(#) Header: print-icmp.c,v 1.20 94/06/14 20:17:39 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_icmp.h>
+#include <netinet/ip_var.h>
+#include <netinet/udp.h>
+#include <netinet/udp_var.h>
+#include <netinet/tcp.h>
+#include <netinet/tcpip.h>
+
+#include <stdio.h>
+
+#include "interface.h"
+#include "addrtoname.h"
+
+void
+icmp_print(register const u_char *bp, register const u_char *bp2)
+{
+	register const struct icmp *dp;
+	register const struct ip *ip;
+	register const char *str;
+	register const struct ip *oip;
+	register const struct udphdr *ouh;
+	register int hlen, dport;
+	register const u_char *ep;
+	char buf[256];
+
+#define TCHECK(var, l) if ((u_char *)&(var) > ep - l) goto trunc
+
+	dp = (struct icmp *)bp;
+	ip = (struct ip *)bp2;
+	str = buf;
+	/* 'ep' points to the end of avaible data. */
+	ep = snapend;
+
+        (void)printf("%s > %s: ",
+		ipaddr_string(&ip->ip_src),
+		ipaddr_string(&ip->ip_dst));
+
+	TCHECK(dp->icmp_code, sizeof(dp->icmp_code));
+	switch (dp->icmp_type) {
+	case ICMP_ECHOREPLY:
+		str = "echo reply";
+		break;
+	case ICMP_UNREACH:
+		TCHECK(dp->icmp_ip.ip_dst, sizeof(dp->icmp_ip.ip_dst));
+		switch (dp->icmp_code) {
+		case ICMP_UNREACH_NET:
+			(void)sprintf(buf, "net %s unreachable",
+				       ipaddr_string(&dp->icmp_ip.ip_dst));
+			break;
+		case ICMP_UNREACH_HOST:
+			(void)sprintf(buf, "host %s unreachable",
+				       ipaddr_string(&dp->icmp_ip.ip_dst));
+			break;
+		case ICMP_UNREACH_PROTOCOL:
+			TCHECK(dp->icmp_ip.ip_p, sizeof(dp->icmp_ip.ip_p));
+			(void)sprintf(buf, "%s protocol %d unreachable",
+				       ipaddr_string(&dp->icmp_ip.ip_dst),
+				       dp->icmp_ip.ip_p);
+			break;
+		case ICMP_UNREACH_PORT:
+			TCHECK(dp->icmp_ip.ip_p, sizeof(dp->icmp_ip.ip_p));
+			oip = &dp->icmp_ip;
+			hlen = oip->ip_hl * 4;
+			ouh = (struct udphdr *)(((u_char *)oip) + hlen);
+			dport = ntohs(ouh->uh_dport);
+			switch (oip->ip_p) {
+			case IPPROTO_TCP:
+				(void)sprintf(buf,
+					"%s tcp port %s unreachable",
+					ipaddr_string(&oip->ip_dst),
+					tcpport_string(dport));
+				break;
+			case IPPROTO_UDP:
+				(void)sprintf(buf,
+					"%s udp port %s unreachable",
+					ipaddr_string(&oip->ip_dst),
+					udpport_string(dport));
+				break;
+			default:
+				(void)sprintf(buf,
+					"%s protocol %d port %d unreachable",
+					ipaddr_string(&oip->ip_dst),
+					oip->ip_p, dport);
+				break;
+			}
+			break;
+		case ICMP_UNREACH_NEEDFRAG:
+			(void)sprintf(buf, "%s unreachable - need to frag",
+				       ipaddr_string(&dp->icmp_ip.ip_dst));
+			break;
+		case ICMP_UNREACH_SRCFAIL:
+			(void)sprintf(buf,
+				"%s unreachable - source route failed",
+				ipaddr_string(&dp->icmp_ip.ip_dst));
+			break;
+		}
+		break;
+	case ICMP_SOURCEQUENCH:
+		str = "source quench";
+		break;
+	case ICMP_REDIRECT:
+		TCHECK(dp->icmp_ip.ip_dst, sizeof(dp->icmp_ip.ip_dst));
+		switch (dp->icmp_code) {
+		case ICMP_REDIRECT_NET:
+			(void)sprintf(buf, "redirect %s to net %s",
+				       ipaddr_string(&dp->icmp_ip.ip_dst),
+				       ipaddr_string(&dp->icmp_gwaddr));
+			break;
+		case ICMP_REDIRECT_HOST:
+			(void)sprintf(buf, "redirect %s to host %s",
+				       ipaddr_string(&dp->icmp_ip.ip_dst),
+				       ipaddr_string(&dp->icmp_gwaddr));
+			break;
+		case ICMP_REDIRECT_TOSNET:
+			(void)sprintf(buf, "redirect-tos %s to net %s",
+				       ipaddr_string(&dp->icmp_ip.ip_dst),
+				       ipaddr_string(&dp->icmp_gwaddr));
+			break;
+		case ICMP_REDIRECT_TOSHOST:
+			(void)sprintf(buf, "redirect-tos %s to host %s",
+				       ipaddr_string(&dp->icmp_ip.ip_dst),
+				       ipaddr_string(&dp->icmp_gwaddr));
+			break;
+		}
+		break;
+	case ICMP_ECHO:
+		str = "echo request";
+		break;
+	case ICMP_TIMXCEED:
+		TCHECK(dp->icmp_ip.ip_dst, sizeof(dp->icmp_ip.ip_dst));
+		switch (dp->icmp_code) {
+		case ICMP_TIMXCEED_INTRANS:
+			str = "time exceeded in-transit";
+			break;
+		case ICMP_TIMXCEED_REASS:
+			str = "ip reassembly time exceeded";
+			break;
+		}
+		break;
+	case ICMP_PARAMPROB:
+		if (dp->icmp_code)
+			(void)sprintf(buf, "parameter problem - code %d",
+					dp->icmp_code);
+		else {
+			TCHECK(dp->icmp_pptr, sizeof(dp->icmp_pptr));
+			(void)sprintf(buf, "parameter problem - octet %d",
+					dp->icmp_pptr);
+		}
+		break;
+	case ICMP_TSTAMP:
+		str = "time stamp request";
+		break;
+	case ICMP_TSTAMPREPLY:
+		str = "time stamp reply";
+		break;
+	case ICMP_IREQ:
+		str = "information request";
+		break;
+	case ICMP_IREQREPLY:
+		str = "information reply";
+		break;
+	case ICMP_MASKREQ:
+		str = "address mask request";
+		break;
+	case ICMP_MASKREPLY:
+		TCHECK(dp->icmp_mask, sizeof(dp->icmp_mask));
+		(void)sprintf(buf, "address mask is 0x%08x",
+		    ntohl(dp->icmp_mask));
+		break;
+	default:
+		(void)sprintf(buf, "type-#%d", dp->icmp_type);
+		break;
+	}
+        (void)printf("icmp: %s", str);
+	return;
+trunc:
+	fputs("[|icmp]", stdout);
+#undef TCHECK
+}