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, 269 insertions, 0 deletions

diff --git a/freebsd/contrib/tcpdump/print-telnet.c b/freebsd/contrib/tcpdump/print-telnet.c
new file mode 100644
index 00000000..a2091789
--- /dev/null
+++ b/freebsd/contrib/tcpdump/print-telnet.c
@@ -0,0 +1,269 @@
+#include <machine/rtems-bsd-user-space.h>
+
+/*	$NetBSD: print-telnet.c,v 1.2 1999/10/11 12:40:12 sjg Exp $ 	*/
+
+/*-
+ * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Simon J. Gerraty.
+ *
+ * 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 the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation 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 BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``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 FOUNDATION OR CONTRIBUTORS
+ * 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.
+ */
+/*
+ *      @(#)Copyright (c) 1994, Simon J. Gerraty.
+ *
+ *      This is free software.  It comes with NO WARRANTY.
+ *      Permission to use, modify and distribute this source code
+ *      is granted subject to the following conditions.
+ *      1/ that the above copyright notice and this notice
+ *      are preserved in all copies.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#ifndef lint
+static const char rcsid[] _U_ =
+     "@(#) $Header: /tcpdump/master/tcpdump/print-telnet.c,v 1.24 2003-12-29 11:05:10 hannes Exp $";
+#endif
+
+#include <tcpdump-stdinc.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "interface.h"
+#include "addrtoname.h"
+
+#define TELCMDS
+#define TELOPTS
+#include "telnet.h"
+
+/* normal */
+static const char *cmds[] = {
+	"IS", "SEND", "INFO",
+};
+
+/* 37: Authentication */
+static const char *authcmd[] = {
+	"IS", "SEND", "REPLY", "NAME",
+};
+static const char *authtype[] = {
+	"NULL", "KERBEROS_V4", "KERBEROS_V5", "SPX", "MINK",
+	"SRP", "RSA", "SSL", NULL, NULL,
+	"LOKI", "SSA", "KEA_SJ", "KEA_SJ_INTEG", "DSS",
+	"NTLM",
+};
+
+/* 38: Encryption */
+static const char *enccmd[] = {
+	"IS", "SUPPORT", "REPLY", "START", "END",
+	"REQUEST-START", "REQUEST-END", "END_KEYID", "DEC_KEYID",
+};
+static const char *enctype[] = {
+	"NULL", "DES_CFB64", "DES_OFB64", "DES3_CFB64", "DES3_OFB64",
+	NULL, "CAST5_40_CFB64", "CAST5_40_OFB64", "CAST128_CFB64", "CAST128_OFB64",
+};
+
+#define STR_OR_ID(x, tab) \
+	(((x) < sizeof(tab)/sizeof(tab[0]) && tab[(x)]) ? tab[(x)] : numstr(x))
+
+static char *
+numstr(int x)
+{
+	static char buf[20];
+
+	snprintf(buf, sizeof(buf), "%#x", x);
+	return buf;
+}
+
+/* sp points to IAC byte */
+static int
+telnet_parse(const u_char *sp, u_int length, int print)
+{
+	int i, x;
+	u_int c;
+	const u_char *osp, *p;
+#define FETCH(c, sp, length) \
+	do { \
+		if (length < 1) \
+			goto pktend; \
+		TCHECK(*sp); \
+		c = *sp++; \
+		length--; \
+	} while (0)
+
+	osp = sp;
+
+	FETCH(c, sp, length);
+	if (c != IAC)
+		goto pktend;
+	FETCH(c, sp, length);
+	if (c == IAC) {		/* <IAC><IAC>! */
+		if (print)
+			printf("IAC IAC");
+		goto done;
+	}
+
+	i = c - TELCMD_FIRST;
+	if (i < 0 || i > IAC - TELCMD_FIRST)
+		goto pktend;
+
+	switch (c) {
+	case DONT:
+	case DO:
+	case WONT:
+	case WILL:
+	case SB:
+		/* DONT/DO/WONT/WILL x */
+		FETCH(x, sp, length);
+		if (x >= 0 && x < NTELOPTS) {
+			if (print)
+				(void)printf("%s %s", telcmds[i], telopts[x]);
+		} else {
+			if (print)
+				(void)printf("%s %#x", telcmds[i], x);
+		}
+		if (c != SB)
+			break;
+		/* IAC SB .... IAC SE */
+		p = sp;
+		while (length > (u_int)(p + 1 - sp)) {
+			if (p[0] == IAC && p[1] == SE)
+				break;
+			p++;
+		}
+		if (*p != IAC)
+			goto pktend;
+
+		switch (x) {
+		case TELOPT_AUTHENTICATION:
+			if (p <= sp)
+				break;
+			FETCH(c, sp, length);
+			if (print)
+				(void)printf(" %s", STR_OR_ID(c, authcmd));
+			if (p <= sp)
+				break;
+			FETCH(c, sp, length);
+			if (print)
+				(void)printf(" %s", STR_OR_ID(c, authtype));
+			break;
+		case TELOPT_ENCRYPT:
+			if (p <= sp)
+				break;
+			FETCH(c, sp, length);
+			if (print)
+				(void)printf(" %s", STR_OR_ID(c, enccmd));
+			if (p <= sp)
+				break;
+			FETCH(c, sp, length);
+			if (print)
+				(void)printf(" %s", STR_OR_ID(c, enctype));
+			break;
+		default:
+			if (p <= sp)
+				break;
+			FETCH(c, sp, length);
+			if (print)
+				(void)printf(" %s", STR_OR_ID(c, cmds));
+			break;
+		}
+		while (p > sp) {
+			FETCH(x, sp, length);
+			if (print)
+				(void)printf(" %#x", x);
+		}
+		/* terminating IAC SE */
+		if (print)
+			(void)printf(" SE");
+		sp += 2;
+		length -= 2;
+		break;
+	default:
+		if (print)
+			(void)printf("%s", telcmds[i]);
+		goto done;
+	}
+
+done:
+	return sp - osp;
+
+trunc:
+	(void)printf("[|telnet]");
+pktend:
+	return -1;
+#undef FETCH
+}
+
+void
+telnet_print(const u_char *sp, u_int length)
+{
+	int first = 1;
+	const u_char *osp;
+	int l;
+
+	osp = sp;
+
+	while (length > 0 && *sp == IAC) {
+		l = telnet_parse(sp, length, 0);
+		if (l < 0)
+			break;
+
+		/*
+		 * now print it
+		 */
+		if (Xflag && 2 < vflag) {
+			if (first)
+				printf("\nTelnet:");
+			hex_print_with_offset("\n", sp, l, sp - osp);
+			if (l > 8)
+				printf("\n\t\t\t\t");
+			else
+				printf("%*s\t", (8 - l) * 3, "");
+		} else
+			printf("%s", (first) ? " [telnet " : ", ");
+
+		(void)telnet_parse(sp, length, 1);
+		first = 0;
+
+		sp += l;
+		length -= l;
+	}
+	if (!first) {
+		if (Xflag && 2 < vflag)
+			printf("\n");
+		else
+			printf("]");
+	}
+}