Add tcpdump and libpcap.

- Update the file builder generator to handle generator specific cflags and
  includes. The tcpdump and libpcap have localised headers and need specific
  headers paths to see them. There are also module specific flags and these
  need to be passed to the lex and yacc generators.

- Add the tcpdump support.

1 files changed, 185 insertions, 0 deletions

diff --git a/freebsd/contrib/tcpdump/print-802_15_4.c b/freebsd/contrib/tcpdump/print-802_15_4.c
new file mode 100644
index 00000000..cd8ff8e6
--- /dev/null
+++ b/freebsd/contrib/tcpdump/print-802_15_4.c
@@ -0,0 +1,185 @@
+#include <machine/rtems-bsd-user-space.h>
+
+/*
+ * Copyright (c) 2009
+ * 	Siemens AG, All rights reserved.
+ * 	Dmitry Eremin-Solenikov (dbaryshkov@gmail.com)
+ *
+ * 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <tcpdump-stdinc.h>
+
+#include <stdio.h>
+#include <pcap.h>
+#include <string.h>
+
+#include "interface.h"
+#include "addrtoname.h"
+
+#include "extract.h"
+
+static const char *ftypes[] = {
+	"Beacon",			/* 0 */
+	"Data",				/* 1 */
+	"ACK",				/* 2 */
+	"Command",			/* 3 */
+	"Reserved",			/* 4 */
+	"Reserved",			/* 5 */
+	"Reserved",			/* 6 */
+	"Reserved",			/* 7 */
+};
+
+static int
+extract_header_length(u_int16_t fc)
+{
+	int len = 0;
+
+	switch ((fc >> 10) & 0x3) {
+	case 0x00:
+		if (fc & (1 << 6)) /* intra-PAN with none dest addr */
+			return -1;
+		break;
+	case 0x01:
+		return -1;
+	case 0x02:
+		len += 4;
+		break;
+	case 0x03:
+		len += 10;
+		break;
+	}
+
+	switch ((fc >> 14) & 0x3) {
+	case 0x00:
+		break;
+	case 0x01:
+		return -1;
+	case 0x02:
+		len += 4;
+		break;
+	case 0x03:
+		len += 10;
+		break;
+	}
+
+	if (fc & (1 << 6)) {
+		if (len < 2)
+			return -1;
+		len -= 2;
+	}
+
+	return len;
+}
+
+
+u_int
+ieee802_15_4_if_print(struct netdissect_options *ndo,
+                      const struct pcap_pkthdr *h, const u_char *p)
+{
+	u_int caplen = h->caplen;
+	int hdrlen;
+	u_int16_t fc;
+	u_int8_t seq;
+
+	if (caplen < 3) {
+		ND_PRINT((ndo, "[|802.15.4] %x", caplen));
+		return caplen;
+	}
+
+	fc = EXTRACT_LE_16BITS(p);
+	hdrlen = extract_header_length(fc);
+
+	seq = EXTRACT_LE_8BITS(p + 2);
+
+	p += 3;
+	caplen -= 3;
+
+	ND_PRINT((ndo,"IEEE 802.15.4 %s packet ", ftypes[fc & 0x7]));
+	if (vflag)
+		ND_PRINT((ndo,"seq %02x ", seq));
+	if (hdrlen == -1) {
+		ND_PRINT((ndo,"malformed! "));
+		return caplen;
+	}
+
+
+	if (!vflag) {
+		p+= hdrlen;
+		caplen -= hdrlen;
+	} else {
+		u_int16_t panid = 0;
+
+		switch ((fc >> 10) & 0x3) {
+		case 0x00:
+			ND_PRINT((ndo,"none "));
+			break;
+		case 0x01:
+			ND_PRINT((ndo,"reserved destination addressing mode"));
+			return 0;
+		case 0x02:
+			panid = EXTRACT_LE_16BITS(p);
+			p += 2;
+			ND_PRINT((ndo,"%04x:%04x ", panid, EXTRACT_LE_16BITS(p)));
+			p += 2;
+			break;
+		case 0x03:
+			panid = EXTRACT_LE_16BITS(p);
+			p += 2;
+			ND_PRINT((ndo,"%04x:%s ", panid, le64addr_string(p)));
+			p += 8;
+			break;
+		}
+		ND_PRINT((ndo,"< ");
+
+		switch ((fc >> 14) & 0x3) {
+		case 0x00:
+			ND_PRINT((ndo,"none "));
+			break;
+		case 0x01:
+			ND_PRINT((ndo,"reserved source addressing mode"));
+			return 0;
+		case 0x02:
+			if (!(fc & (1 << 6))) {
+				panid = EXTRACT_LE_16BITS(p);
+				p += 2;
+			}
+			ND_PRINT((ndo,"%04x:%04x ", panid, EXTRACT_LE_16BITS(p)));
+			p += 2;
+			break;
+		case 0x03:
+			if (!(fc & (1 << 6))) {
+				panid = EXTRACT_LE_16BITS(p);
+				p += 2;
+			}
+                        ND_PRINT((ndo,"%04x:%s ", panid, le64addr_string(p))));
+			p += 8;
+			break;
+		}
+
+		caplen -= hdrlen;
+	}
+
+	if (!suppress_default_print)
+		(ndo->ndo_default_print)(ndo, p, caplen);
+
+	return 0;
+}