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, 217 insertions, 0 deletions

diff --git a/freebsd/contrib/tcpdump/print-chdlc.c b/freebsd/contrib/tcpdump/print-chdlc.c
new file mode 100644
index 00000000..37414cb3
--- /dev/null
+++ b/freebsd/contrib/tcpdump/print-chdlc.c
@@ -0,0 +1,217 @@
+#include <machine/rtems-bsd-user-space.h>
+
+/*
+ * 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[] _U_ =
+    "@(#) $Header: /tcpdump/master/tcpdump/print-chdlc.c,v 1.43 2005-11-29 08:56:19 hannes Exp $ (LBL)";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <tcpdump-stdinc.h>
+
+#include <pcap.h>
+#include <stdio.h>
+
+#include "interface.h"
+#include "addrtoname.h"
+#include "ethertype.h"
+#include "extract.h"
+#include "ppp.h"
+#include "chdlc.h"
+
+static void chdlc_slarp_print(const u_char *, u_int);
+
+const struct tok chdlc_cast_values[] = { 
+    { CHDLC_UNICAST, "unicast" },
+    { CHDLC_BCAST, "bcast" },
+    { 0, NULL}
+};
+
+
+/* Standard CHDLC printer */
+u_int
+chdlc_if_print(const struct pcap_pkthdr *h, register const u_char *p)
+{
+	register u_int length = h->len;
+	register u_int caplen = h->caplen;
+
+	if (caplen < CHDLC_HDRLEN) {
+		printf("[|chdlc]");
+		return (caplen);
+	}
+        return (chdlc_print(p,length));
+}
+
+u_int
+chdlc_print(register const u_char *p, u_int length) {
+	u_int proto;
+
+	proto = EXTRACT_16BITS(&p[2]);
+	if (eflag) {
+                printf("%s, ethertype %s (0x%04x), length %u: ",
+                       tok2str(chdlc_cast_values, "0x%02x", p[0]),
+                       tok2str(ethertype_values, "Unknown", proto),
+                       proto,
+                       length);
+	}
+
+	length -= CHDLC_HDRLEN;
+	p += CHDLC_HDRLEN;
+
+	switch (proto) {
+	case ETHERTYPE_IP:
+		ip_print(gndo, p, length);
+		break;
+#ifdef INET6
+	case ETHERTYPE_IPV6:
+		ip6_print(gndo, p, length);
+		break;
+#endif
+	case CHDLC_TYPE_SLARP:
+		chdlc_slarp_print(p, length);
+		break;
+#if 0
+	case CHDLC_TYPE_CDP:
+		chdlc_cdp_print(p, length);
+		break;
+#endif
+        case ETHERTYPE_MPLS:
+        case ETHERTYPE_MPLS_MULTI:
+                mpls_print(p, length);
+		break;
+        case ETHERTYPE_ISO:
+                /* is the fudge byte set ? lets verify by spotting ISO headers */
+                if (*(p+1) == 0x81 ||
+                    *(p+1) == 0x82 ||
+                    *(p+1) == 0x83)
+                    isoclns_print(p+1, length-1, length-1);
+                else
+                    isoclns_print(p, length, length);
+                break;
+	default:
+                if (!eflag)
+                        printf("unknown CHDLC protocol (0x%04x)", proto);
+                break;
+	}
+
+	return (CHDLC_HDRLEN);
+}
+
+/*
+ * The fixed-length portion of a SLARP packet.
+ */
+struct cisco_slarp {
+	u_int8_t code[4];
+#define SLARP_REQUEST	0
+#define SLARP_REPLY	1
+#define SLARP_KEEPALIVE	2
+	union {
+		struct {
+			u_int8_t addr[4];
+			u_int8_t mask[4];
+		} addr;
+		struct {
+			u_int8_t myseq[4];
+			u_int8_t yourseq[4];
+			u_int8_t rel[2];
+		} keep;
+	} un;
+};
+
+#define SLARP_MIN_LEN	14
+#define SLARP_MAX_LEN	18
+
+static void
+chdlc_slarp_print(const u_char *cp, u_int length)
+{
+	const struct cisco_slarp *slarp;
+        u_int sec,min,hrs,days;
+
+        printf("SLARP (length: %u), ",length);
+	if (length < SLARP_MIN_LEN)
+		goto trunc;
+
+	slarp = (const struct cisco_slarp *)cp;
+	TCHECK2(*slarp, SLARP_MIN_LEN);
+	switch (EXTRACT_32BITS(&slarp->code)) {
+	case SLARP_REQUEST:
+		printf("request");
+		/*
+		 * At least according to William "Chops" Westfield's
+		 * message in
+		 *
+		 *	http://www.nethelp.no/net/cisco-hdlc.txt
+		 *
+		 * the address and mask aren't used in requests -
+		 * they're just zero.
+		 */
+		break;
+	case SLARP_REPLY:
+		printf("reply %s/%s",
+			ipaddr_string(&slarp->un.addr.addr),
+			ipaddr_string(&slarp->un.addr.mask));
+		break;
+	case SLARP_KEEPALIVE:
+		printf("keepalive: mineseen=0x%08x, yourseen=0x%08x, reliability=0x%04x",
+                       EXTRACT_32BITS(&slarp->un.keep.myseq),
+                       EXTRACT_32BITS(&slarp->un.keep.yourseq),
+                       EXTRACT_16BITS(&slarp->un.keep.rel));
+
+                if (length >= SLARP_MAX_LEN) { /* uptime-stamp is optional */
+                        cp += SLARP_MIN_LEN;
+                        if (!TTEST2(*cp, 4))
+                                goto trunc;
+                        sec = EXTRACT_32BITS(cp) / 1000;
+                        min = sec / 60; sec -= min * 60;
+                        hrs = min / 60; min -= hrs * 60;
+                        days = hrs / 24; hrs -= days * 24;
+                        printf(", link uptime=%ud%uh%um%us",days,hrs,min,sec);
+                }
+		break;
+	default:
+		printf("0x%02x unknown", EXTRACT_32BITS(&slarp->code));
+                if (vflag <= 1)
+                    print_unknown_data(cp+4,"\n\t",length-4);
+		break;
+	}
+
+	if (SLARP_MAX_LEN < length && vflag)
+		printf(", (trailing junk: %d bytes)", length - SLARP_MAX_LEN);
+        if (vflag > 1)
+            print_unknown_data(cp+4,"\n\t",length-4);
+	return;
+
+trunc:
+	printf("[|slarp]");
+}
+
+
+/*
+ * Local Variables:
+ * c-style: whitesmith
+ * c-basic-offset: 8
+ * End:
+ */