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, 288 insertions, 0 deletions

diff --git a/freebsd/contrib/libpcap/fad-getad.c b/freebsd/contrib/libpcap/fad-getad.c
new file mode 100644
index 00000000..2a5b549a
--- /dev/null
+++ b/freebsd/contrib/libpcap/fad-getad.c
@@ -0,0 +1,288 @@
+#include <machine/rtems-bsd-user-space.h>
+
+/* -*- Mode: c; tab-width: 8; indent-tabs-mode: 1; c-basic-offset: 8; -*- */
+/*
+ * Copyright (c) 1994, 1995, 1996, 1997, 1998
+ *	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 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 Computer Systems
+ *	Engineering Group at Lawrence Berkeley Laboratory.
+ * 4. Neither the name of the University nor of the Laboratory may be used
+ *    to endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
+ */
+
+#ifndef lint
+static const char rcsid[] _U_ =
+    "@(#) $Header: /tcpdump/master/libpcap/fad-getad.c,v 1.12 2007-09-14 00:44:55 guy Exp $ (LBL)";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <rtems/bsd/sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+
+#include <net/if.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ifaddrs.h>
+
+#include "pcap-int.h"
+
+#ifdef HAVE_OS_PROTO_H
+#include "os-proto.h"
+#endif
+
+#ifdef AF_PACKET
+# ifdef HAVE_NETPACKET_PACKET_H
+/* Solaris 11 and later, Linux distributions with newer glibc */
+#  include <netpacket/packet.h>
+# else /* HAVE_NETPACKET_PACKET_H */
+/* LynxOS, Linux distributions with older glibc */
+# ifdef __Lynx__
+/* LynxOS */
+#  include <netpacket/if_packet.h>
+# else /* __Lynx__ */
+/* Linux */
+#  include <linux/types.h>
+#  include <linux/if_packet.h>
+# endif /* __Lynx__ */
+# endif /* HAVE_NETPACKET_PACKET_H */
+#endif /* AF_PACKET */
+
+/*
+ * This is fun.
+ *
+ * In older BSD systems, socket addresses were fixed-length, and
+ * "sizeof (struct sockaddr)" gave the size of the structure.
+ * All addresses fit within a "struct sockaddr".
+ *
+ * In newer BSD systems, the socket address is variable-length, and
+ * there's an "sa_len" field giving the length of the structure;
+ * this allows socket addresses to be longer than 2 bytes of family
+ * and 14 bytes of data.
+ *
+ * Some commercial UNIXes use the old BSD scheme, some use the RFC 2553
+ * variant of the old BSD scheme (with "struct sockaddr_storage" rather
+ * than "struct sockaddr"), and some use the new BSD scheme.
+ *
+ * Some versions of GNU libc use neither scheme, but has an "SA_LEN()"
+ * macro that determines the size based on the address family.  Other
+ * versions don't have "SA_LEN()" (as it was in drafts of RFC 2553
+ * but not in the final version).  On the latter systems, we explicitly
+ * check the AF_ type to determine the length; we assume that on
+ * all those systems we have "struct sockaddr_storage".
+ */
+#ifndef SA_LEN
+#ifdef HAVE_SOCKADDR_SA_LEN
+#define SA_LEN(addr)	((addr)->sa_len)
+#else /* HAVE_SOCKADDR_SA_LEN */
+#ifdef HAVE_SOCKADDR_STORAGE
+static size_t
+get_sa_len(struct sockaddr *addr)
+{
+	switch (addr->sa_family) {
+
+#ifdef AF_INET
+	case AF_INET:
+		return (sizeof (struct sockaddr_in));
+#endif
+
+#ifdef AF_INET6
+	case AF_INET6:
+		return (sizeof (struct sockaddr_in6));
+#endif
+
+#ifdef AF_PACKET
+	case AF_PACKET:
+		return (sizeof (struct sockaddr_ll));
+#endif
+
+	default:
+		return (sizeof (struct sockaddr));
+	}
+}
+#define SA_LEN(addr)	(get_sa_len(addr))
+#else /* HAVE_SOCKADDR_STORAGE */
+#define SA_LEN(addr)	(sizeof (struct sockaddr))
+#endif /* HAVE_SOCKADDR_STORAGE */
+#endif /* HAVE_SOCKADDR_SA_LEN */
+#endif /* SA_LEN */
+
+/*
+ * Get a list of all interfaces that are up and that we can open.
+ * Returns -1 on error, 0 otherwise.
+ * The list, as returned through "alldevsp", may be null if no interfaces
+ * were up and could be opened.
+ */
+int
+pcap_findalldevs_interfaces(pcap_if_t **alldevsp, char *errbuf)
+{
+	pcap_if_t *devlist = NULL;
+	struct ifaddrs *ifap, *ifa;
+	struct sockaddr *addr, *netmask, *broadaddr, *dstaddr;
+	size_t addr_size, broadaddr_size, dstaddr_size;
+	int ret = 0;
+	char *p, *q;
+
+	/*
+	 * Get the list of interface addresses.
+	 *
+	 * Note: this won't return information about interfaces
+	 * with no addresses; are there any such interfaces
+	 * that would be capable of receiving packets?
+	 * (Interfaces incapable of receiving packets aren't
+	 * very interesting from libpcap's point of view.)
+	 *
+	 * LAN interfaces will probably have link-layer
+	 * addresses; I don't know whether all implementations
+	 * of "getifaddrs()" now, or in the future, will return
+	 * those.
+	 */
+	if (getifaddrs(&ifap) != 0) {
+		(void)snprintf(errbuf, PCAP_ERRBUF_SIZE,
+		    "getifaddrs: %s", pcap_strerror(errno));
+		return (-1);
+	}
+	for (ifa = ifap; ifa != NULL; ifa = ifa->ifa_next) {
+		/*
+		 * Is this interface up?
+		 */
+		if (!(ifa->ifa_flags & IFF_UP)) {
+			/*
+			 * No, so don't add it to the list.
+			 */
+			continue;
+		}
+
+		/*
+		 * "ifa_addr" was apparently null on at least one
+		 * interface on some system.
+		 *
+		 * "ifa_broadaddr" may be non-null even on
+		 * non-broadcast interfaces, and was null on
+		 * at least one OpenBSD 3.4 system on at least
+		 * one interface with IFF_BROADCAST set.
+		 *
+		 * "ifa_dstaddr" was, on at least one FreeBSD 4.1
+		 * system, non-null on a non-point-to-point
+		 * interface.
+		 *
+		 * Therefore, we supply the address and netmask only
+		 * if "ifa_addr" is non-null (if there's no address,
+		 * there's obviously no netmask), and supply the
+		 * broadcast and destination addresses if the appropriate
+		 * flag is set *and* the appropriate "ifa_" entry doesn't
+		 * evaluate to a null pointer.
+		 */
+		if (ifa->ifa_addr != NULL) {
+			addr = ifa->ifa_addr;
+			addr_size = SA_LEN(addr);
+			netmask = ifa->ifa_netmask;
+		} else {
+			addr = NULL;
+			addr_size = 0;
+			netmask = NULL;
+		}
+		if (ifa->ifa_flags & IFF_BROADCAST &&
+		    ifa->ifa_broadaddr != NULL) {
+			broadaddr = ifa->ifa_broadaddr;
+			broadaddr_size = SA_LEN(broadaddr);
+		} else {
+			broadaddr = NULL;
+			broadaddr_size = 0;
+		}
+		if (ifa->ifa_flags & IFF_POINTOPOINT &&
+		    ifa->ifa_dstaddr != NULL) {
+			dstaddr = ifa->ifa_dstaddr;
+			dstaddr_size = SA_LEN(ifa->ifa_dstaddr);
+		} else {
+			dstaddr = NULL;
+			dstaddr_size = 0;
+		}
+
+		/*
+		 * If this entry has a colon followed by a number at
+		 * the end, we assume it's a logical interface.  Those
+		 * are just the way you assign multiple IP addresses to
+		 * a real interface on Linux, so an entry for a logical
+		 * interface should be treated like the entry for the
+		 * real interface; we do that by stripping off the ":"
+		 * and the number.
+		 *
+		 * XXX - should we do this only on Linux?
+		 */
+		p = strchr(ifa->ifa_name, ':');
+		if (p != NULL) {
+			/*
+			 * We have a ":"; is it followed by a number?
+			 */
+			q = p + 1;
+			while (isdigit((unsigned char)*q))
+				q++;
+			if (*q == '\0') {
+				/*
+				 * All digits after the ":" until the end.
+				 * Strip off the ":" and everything after
+				 * it.
+				 */
+			       *p = '\0';
+			}
+		}
+
+		/*
+		 * Add information for this address to the list.
+		 */
+		if (add_addr_to_iflist(&devlist, ifa->ifa_name,
+		    ifa->ifa_flags, addr, addr_size, netmask, addr_size,
+		    broadaddr, broadaddr_size, dstaddr, dstaddr_size,
+		    errbuf) < 0) {
+			ret = -1;
+			break;
+		}
+	}
+
+	freeifaddrs(ifap);
+
+	if (ret == -1) {
+		/*
+		 * We had an error; free the list we've been constructing.
+		 */
+		if (devlist != NULL) {
+			pcap_freealldevs(devlist);
+			devlist = NULL;
+		}
+	}
+
+	*alldevsp = devlist;
+	return (ret);
+}