Imported Upstream version 4.3.0upstream/4.3.0

1 files changed, 116 insertions, 0 deletions

diff --git a/print-cip.c b/print-cip.c
new file mode 100644
index 0000000..e9d672f
--- /dev/null
+++ b/print-cip.c
@@ -0,0 +1,116 @@
+/*
+ * Marko Kiiskila carnil@cs.tut.fi
+ *
+ * Tampere University of Technology - Telecommunications Laboratory
+ *
+ * Permission to use, copy, modify and distribute this
+ * software and its documentation is hereby granted,
+ * provided that both the copyright notice and this
+ * permission notice appear in all copies of the software,
+ * derivative works or modified versions, and any portions
+ * thereof, that both notices appear in supporting
+ * documentation, and that the use of this software is
+ * acknowledged in any publications resulting from using
+ * the software.
+ *
+ * TUT ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION AND DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS
+ * SOFTWARE.
+ *
+ */
+
+#ifndef lint
+static const char rcsid[] _U_ =
+    "@(#) $Header: /tcpdump/master/tcpdump/print-cip.c,v 1.26 2005-07-07 01:22:17 guy Exp $ (LBL)";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+
+#include <tcpdump-stdinc.h>
+
+#include <stdio.h>
+#include <pcap.h>
+
+#include "interface.h"
+#include "addrtoname.h"
+#include "ethertype.h"
+#include "ether.h"
+
+#define RFC1483LLC_LEN	8
+
+static unsigned char rfcllc[] = {
+	0xaa,	/* DSAP: non-ISO */
+	0xaa,	/* SSAP: non-ISO */
+	0x03,	/* Ctrl: Unnumbered Information Command PDU */
+	0x00,	/* OUI: EtherType */
+	0x00,
+	0x00 };
+
+static inline void
+cip_print(int length)
+{
+	/*
+	 * There is no MAC-layer header, so just print the length.
+	 */
+	printf("%d: ", length);
+}
+
+/*
+ * This is the top level routine of the printer.  'p' points
+ * to the LLC/SNAP or raw header of the packet, 'h->ts' is the timestamp,
+ * 'h->len' is the length of the packet off the wire, and 'h->caplen'
+ * is the number of bytes actually captured.
+ */
+u_int
+cip_if_print(const struct pcap_pkthdr *h, const u_char *p)
+{
+	u_int caplen = h->caplen;
+	u_int length = h->len;
+	u_short extracted_ethertype;
+
+	if (memcmp(rfcllc, p, sizeof(rfcllc))==0 && caplen < RFC1483LLC_LEN) {
+		printf("[|cip]");
+		return (0);
+	}
+
+	if (eflag)
+		cip_print(length);
+
+	if (memcmp(rfcllc, p, sizeof(rfcllc)) == 0) {
+		/*
+		 * LLC header is present.  Try to print it & higher layers.
+		 */
+		if (llc_print(p, length, caplen, NULL, NULL,
+		    &extracted_ethertype) == 0) {
+			/* ether_type not known, print raw packet */
+			if (!eflag)
+				cip_print(length);
+			if (extracted_ethertype) {
+				printf("(LLC %s) ",
+			       etherproto_string(htons(extracted_ethertype)));
+			}
+			if (!suppress_default_print)
+				default_print(p, caplen);
+		}
+	} else {
+		/*
+		 * LLC header is absent; treat it as just IP.
+		 */
+		ip_print(gndo, p, length);
+	}
+
+	return (0);
+}
+
+
+/*
+ * Local Variables:
+ * c-style: whitesmith
+ * c-basic-offset: 8
+ * End:
+ */