Add support for Apple's IP-over-IEEE 1394 encapsulation.

1 files changed, 92 insertions, 0 deletions

diff --git a/print-ap1394.c b/print-ap1394.c
new file mode 100644
index 00000000..49a704ea
--- /dev/null
+++ b/print-ap1394.c
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000
+ *	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[] _U_ =
+    "@(#) $Header: /tcpdump/master/tcpdump/print-ap1394.c,v 1.1 2004-03-17 19:40:42 guy Exp $ (LBL)";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <tcpdump-stdinc.h>
+
+#include <stdio.h>
+#include <pcap.h>
+
+#include "interface.h"
+#include "addrtoname.h"
+#include "ethertype.h"
+
+/*
+ * Structure of a header for Apple's IP-over-IEEE 1384 BPF header.
+ */
+#define FIREWIRE_EUI64_LEN	8
+struct firewire_header {
+	u_char  firewire_dhost[FIREWIRE_EUI64_LEN];
+	u_char  firewire_shost[FIREWIRE_EUI64_LEN];
+	u_short firewire_type;
+};
+
+/*
+ * Length of that header; note that some compilers may pad
+ * "struct firewire_header" to a multiple of 4 bytes, for example, so
+ * "sizeof (struct firewire_header)" may not give the right answer.
+ */
+#define FIREWIRE_HDRLEN		18
+
+/*
+ * This is the top level routine of the printer.  'p' points
+ * to the ether header of the packet, 'h->ts' is the timestamp,
+ * 'h->length' is the length of the packet off the wire, and 'h->caplen'
+ * is the number of bytes actually captured.
+ */
+u_int
+ap1394_if_print(const struct pcap_pkthdr *h, const u_char *p)
+{
+	u_int length = h->len;
+	u_int caplen = h->caplen;
+	struct firewire_header *fp;
+	u_short ether_type;
+	u_short extracted_ether_type;
+
+	if (caplen < FIREWIRE_HDRLEN) {
+		printf("[|ap1394]");
+		return FIREWIRE_HDRLEN;
+	}
+
+	length -= FIREWIRE_HDRLEN;
+	caplen -= FIREWIRE_HDRLEN;
+	fp = (struct firewire_header *)p;
+	p += FIREWIRE_HDRLEN;
+
+	ether_type = ntohs(fp->firewire_type);
+
+	extracted_ether_type = 0;
+	if (ether_encap_print(ether_type, p, length, caplen,
+	    &extracted_ether_type) == 0) {
+		/* ether_type not known, print raw packet */
+		if (!xflag && !qflag)
+			default_print(p, caplen);
+	} 
+
+	return FIREWIRE_HDRLEN;
+}