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, 192 insertions, 0 deletions

diff --git a/freebsd/contrib/tcpdump/print-cnfp.c b/freebsd/contrib/tcpdump/print-cnfp.c
new file mode 100644
index 00000000..ae4a3426
--- /dev/null
+++ b/freebsd/contrib/tcpdump/print-cnfp.c
@@ -0,0 +1,192 @@
+#include <machine/rtems-bsd-user-space.h>
+
+/*	$OpenBSD: print-cnfp.c,v 1.2 1998/06/25 20:26:59 mickey Exp $	*/
+
+/*
+ * Copyright (c) 1998 Michael Shalayeff
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by Michael Shalayeff.
+ * 4. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* Cisco NetFlow protocol */
+
+#ifndef lint
+static const char rcsid[] _U_ =
+    "@(#) $Header: /tcpdump/master/tcpdump/print-cnfp.c,v 1.17 2005-04-20 20:53:18 guy Exp $";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <tcpdump-stdinc.h>
+
+#include <stdio.h>
+#include <string.h>
+
+#include "interface.h"
+#include "addrtoname.h"
+#include "extract.h"
+
+#include "tcp.h"
+#include "ipproto.h"
+
+struct nfhdr {
+	u_int32_t	ver_cnt;	/* version [15], and # of records */
+	u_int32_t	msys_uptime;
+	u_int32_t	utc_sec;
+	u_int32_t	utc_nsec;
+	u_int32_t	sequence;	/* v5 flow sequence number */
+	u_int32_t	reserved;	/* v5 only */
+};
+
+struct nfrec {
+	struct in_addr	src_ina;
+	struct in_addr	dst_ina;
+	struct in_addr	nhop_ina;
+	u_int32_t	ifaces;		/* src,dst ifaces */
+	u_int32_t	packets;
+	u_int32_t	octets;
+	u_int32_t	start_time;	/* sys_uptime value */
+	u_int32_t	last_time;	/* sys_uptime value */
+	u_int32_t	ports;		/* src,dst ports */
+	u_int32_t	proto_tos;	/* proto, tos, pad, flags(v5) */
+	u_int32_t	asses;		/* v1: flags; v5: src,dst AS */
+	u_int32_t	masks;		/* src,dst addr prefix; v6: encaps */
+	struct in_addr	peer_nexthop;	/* v6: IP address of the nexthop within the peer (FIB)*/
+};
+
+void
+cnfp_print(const u_char *cp, const u_char *bp _U_)
+{
+	register const struct nfhdr *nh;
+	register const struct nfrec *nr;
+	struct protoent *pent;
+	int nrecs, ver;
+#if 0
+	time_t t;
+#endif
+
+	nh = (const struct nfhdr *)cp;
+
+	if ((const u_char *)(nh + 1) > snapend)
+		return;
+
+	nrecs = EXTRACT_32BITS(&nh->ver_cnt) & 0xffff;
+	ver = (EXTRACT_32BITS(&nh->ver_cnt) & 0xffff0000) >> 16;
+#if 0
+	/*
+	 * This is seconds since the UN*X epoch, and is followed by
+	 * nanoseconds.  XXX - format it, rather than just dumping the
+	 * raw seconds-since-the-Epoch.
+	 */
+	t = EXTRACT_32BITS(&nh->utc_sec);
+#endif
+
+	printf("NetFlow v%x, %u.%03u uptime, %u.%09u, ", ver,
+	       EXTRACT_32BITS(&nh->msys_uptime)/1000,
+	       EXTRACT_32BITS(&nh->msys_uptime)%1000,
+	       EXTRACT_32BITS(&nh->utc_sec), EXTRACT_32BITS(&nh->utc_nsec));
+
+	if (ver == 5 || ver == 6) {
+		printf("#%u, ", EXTRACT_32BITS(&nh->sequence));
+		nr = (const struct nfrec *)&nh[1];
+		snaplen -= 24;
+	} else {
+		nr = (const struct nfrec *)&nh->sequence;
+		snaplen -= 16;
+	}
+
+	printf("%2u recs", nrecs);
+
+	for (; nrecs-- && (const u_char *)(nr + 1) <= snapend; nr++) {
+		char buf[20];
+		char asbuf[20];
+
+		printf("\n  started %u.%03u, last %u.%03u",
+		       EXTRACT_32BITS(&nr->start_time)/1000,
+		       EXTRACT_32BITS(&nr->start_time)%1000,
+		       EXTRACT_32BITS(&nr->last_time)/1000,
+		       EXTRACT_32BITS(&nr->last_time)%1000);
+
+		asbuf[0] = buf[0] = '\0';
+		if (ver == 5 || ver == 6) {
+			snprintf(buf, sizeof(buf), "/%u",
+				 (EXTRACT_32BITS(&nr->masks) >> 24) & 0xff);
+			snprintf(asbuf, sizeof(asbuf), ":%u",
+				 (EXTRACT_32BITS(&nr->asses) >> 16) & 0xffff);
+		}
+		printf("\n    %s%s%s:%u ", intoa(nr->src_ina.s_addr), buf, asbuf,
+			EXTRACT_32BITS(&nr->ports) >> 16);
+
+		if (ver == 5 || ver ==6) {
+			snprintf(buf, sizeof(buf), "/%d",
+				 (EXTRACT_32BITS(&nr->masks) >> 16) & 0xff);
+			snprintf(asbuf, sizeof(asbuf), ":%u",
+				 EXTRACT_32BITS(&nr->asses) & 0xffff);
+		}
+		printf("> %s%s%s:%u ", intoa(nr->dst_ina.s_addr), buf, asbuf,
+			EXTRACT_32BITS(&nr->ports) & 0xffff);
+
+		printf(">> %s\n    ", intoa(nr->nhop_ina.s_addr));
+
+		pent = getprotobynumber((EXTRACT_32BITS(&nr->proto_tos) >> 8) & 0xff);
+		if (!pent || nflag)
+			printf("%u ",
+			       (EXTRACT_32BITS(&nr->proto_tos) >> 8) & 0xff);
+		else
+			printf("%s ", pent->p_name);
+
+		/* tcp flags for tcp only */
+		if (pent && pent->p_proto == IPPROTO_TCP) {
+			int flags;
+			if (ver == 1)
+				flags = (EXTRACT_32BITS(&nr->asses) >> 24) & 0xff;
+			else
+				flags = (EXTRACT_32BITS(&nr->proto_tos) >> 16) & 0xff;
+			if (flags & TH_FIN)	putchar('F');
+			if (flags & TH_SYN)	putchar('S');
+			if (flags & TH_RST)	putchar('R');
+			if (flags & TH_PUSH)	putchar('P');
+			if (flags & TH_ACK)	putchar('A');
+			if (flags & TH_URG)	putchar('U');
+			if (flags)
+				putchar(' ');
+		}
+
+		buf[0]='\0';
+		if (ver == 6) {
+			snprintf(buf, sizeof(buf), "(%u<>%u encaps)",
+				 (EXTRACT_32BITS(&nr->masks) >> 8) & 0xff,
+				 (EXTRACT_32BITS(&nr->masks)) & 0xff);
+		}
+		printf("tos %u, %u (%u octets) %s",
+		       EXTRACT_32BITS(&nr->proto_tos) & 0xff,
+		       EXTRACT_32BITS(&nr->packets),
+		       EXTRACT_32BITS(&nr->octets), buf);
+	}
+}