Virgin import of tcpdump.org tcpdump v3.5

1 files changed, 196 insertions, 0 deletions

diff --git a/contrib/tcpdump/print-chdlc.c b/contrib/tcpdump/print-chdlc.c
new file mode 100644
index 0000000..f9c5ecf
--- /dev/null
+++ b/contrib/tcpdump/print-chdlc.c
@@ -0,0 +1,196 @@
+/* maybe it should be merged into print-ppp.c */
+/*
+ * Copyright (c) 1990, 1991, 1993, 1994, 1995, 1996, 1997
+ *	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 const char rcsid[] =
+    "@(#) $Header: /tcpdump/master/tcpdump/print-chdlc.c,v 1.2 1999/11/21 09:36:49 fenner Exp $ (LBL)";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <sys/param.h>
+#include <sys/time.h>
+#include <sys/socket.h>
+#include <sys/file.h>
+#include <sys/ioctl.h>
+
+#if __STDC__
+struct mbuf;
+struct rtentry;
+#endif
+#include <net/if.h>
+
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+#include <netinet/if_ether.h>
+
+#include <ctype.h>
+#include <netdb.h>
+#include <pcap.h>
+#include <stdio.h>
+#ifdef __bsdi__
+#include <net/slcompress.h>
+#include <net/if_ppp.h>
+#endif
+
+#include "interface.h"
+#include "addrtoname.h"
+#include "ppp.h"
+
+/* XXX This goes somewhere else. */
+#define CHDLC_HDRLEN 4
+#define CHDLC_UNICAST	0x0f
+#define CHDLC_BCAST	0x8f
+#define CHDLC_TYPE_SLARP	0x8035
+#define CHDLC_TYPE_CDP		0x2000
+
+static void chdlc_slarp_print(const u_char *, u_int);
+
+/* Standard CHDLC printer */
+void
+chdlc_if_print(u_char *user, const struct pcap_pkthdr *h,
+	     register const u_char *p)
+{
+	register u_int length = h->len;
+	register u_int caplen = h->caplen;
+	const struct ip *ip;
+	u_int proto;
+
+	ts_print(&h->ts);
+
+	if (caplen < CHDLC_HDRLEN) {
+		printf("[|chdlc]");
+		goto out;
+	}
+
+	/*
+	 * Some printers want to get back at the link level addresses,
+	 * and/or check that they're not walking off the end of the packet.
+	 * Rather than pass them all the way down, we set these globals.
+	 */
+	proto = ntohs(*(u_short *)&p[2]);
+	packetp = p;
+	snapend = p + caplen;
+
+	if (eflag) {
+		switch (p[0]) {
+		case CHDLC_UNICAST:
+			printf("unicast ");
+			break;
+		case CHDLC_BCAST:
+			printf("bcast ");
+			break;
+		default:
+			printf("0x%02x ", p[0]);
+			break;
+		}
+		printf("%d %04x: ", length, proto);
+	}
+
+	length -= CHDLC_HDRLEN;
+	ip = (struct ip *)(p + CHDLC_HDRLEN);
+	switch(proto) {
+	case ETHERTYPE_IP:
+		ip_print((const u_char *)ip, length);
+		break;
+#ifdef INET6
+	case ETHERTYPE_IPV6:
+		ip6_print((const u_char *)ip, length);
+		break;
+#endif
+	case CHDLC_TYPE_SLARP:
+		chdlc_slarp_print((const u_char *)ip, length);
+		break;
+#if 0
+	case CHDLC_TYPE_CDP:
+		chdlc_cdp_print((const u_char *)ip, length);
+		break;
+#endif
+	}
+	if (xflag)
+		default_print((const u_char *)ip, caplen - CHDLC_HDRLEN);
+out:
+	putchar('\n');
+}
+
+struct cisco_slarp {
+	long code;
+#define SLARP_REQUEST	0
+#define SLARP_REPLY	1
+#define SLARP_KEEPALIVE	2
+	union {
+		struct {
+			struct in_addr addr;
+			struct in_addr mask;
+			u_short unused[3];
+		} addr;
+		struct {
+			long myseq;
+			long yourseq;
+			short rel;
+			short t1;
+			short t2;
+		} keep;
+	} un;
+};
+
+#define SLARP_LEN	18
+
+static void
+chdlc_slarp_print(const u_char *cp, u_int length)
+{
+	struct cisco_slarp *slarp;
+
+	if (length < SLARP_LEN) {
+		printf("[|slarp]");
+		return;
+	}
+
+	slarp = (struct cisco_slarp *)cp;
+	switch (ntohl(slarp->code)) {
+	case SLARP_REQUEST:
+		printf("slarp-request");
+		break;
+	case SLARP_REPLY:
+		printf("slarp-reply %s/%s",
+			ipaddr_string(&slarp->un.addr.addr),
+			ipaddr_string(&slarp->un.addr.mask));
+		break;
+	case SLARP_KEEPALIVE:
+		printf("slarp-keepalive my=0x%x your=0x%x ",
+			(u_int32_t)ntohl(slarp->un.keep.myseq),
+			(u_int32_t)ntohl(slarp->un.keep.yourseq));
+		printf("reliability=0x%04x t1=%d.%d",
+			ntohs(slarp->un.keep.rel), ntohs(slarp->un.keep.t1),
+			ntohs(slarp->un.keep.t2));
+		break;
+	default:
+		printf("slarp-0x%x unknown", (u_int32_t)ntohl(slarp->code));
+		break;
+	}
+
+	if (SLARP_LEN < length && vflag)
+		printf("(trailing junk: %d bytes)", length - SLARP_LEN);
+}