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, 1218 insertions, 0 deletions

diff --git a/freebsd/contrib/tcpdump/addrtoname.c b/freebsd/contrib/tcpdump/addrtoname.c
new file mode 100644
index 00000000..cd5963d5
--- /dev/null
+++ b/freebsd/contrib/tcpdump/addrtoname.c
@@ -0,0 +1,1218 @@
+#include <machine/rtems-bsd-user-space.h>
+
+/*
+ * Copyright (c) 1990, 1991, 1992, 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.
+ *
+ *  Internet, ethernet, port, and protocol string to address
+ *  and address to string conversion routines
+ *
+ * $FreeBSD$
+ */
+#ifndef lint
+static const char rcsid[] _U_ =
+    "@(#) $Header: /tcpdump/master/tcpdump/addrtoname.c,v 1.119 2007-08-08 14:06:34 hannes Exp $ (LBL)";
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <tcpdump-stdinc.h>
+
+#ifdef USE_ETHER_NTOHOST
+#ifdef HAVE_NETINET_IF_ETHER_H
+struct mbuf;		/* Squelch compiler warnings on some platforms for */
+struct rtentry;		/* declarations in <net/if.h> */
+#include <net/if.h>	/* for "struct ifnet" in "struct arpcom" on Solaris */
+#include <netinet/if_ether.h>
+#endif /* HAVE_NETINET_IF_ETHER_H */
+#ifdef NETINET_ETHER_H_DECLARES_ETHER_NTOHOST
+#include <netinet/ether.h>
+#endif /* NETINET_ETHER_H_DECLARES_ETHER_NTOHOST */
+
+#if !defined(HAVE_DECL_ETHER_NTOHOST) || !HAVE_DECL_ETHER_NTOHOST
+#ifndef HAVE_STRUCT_ETHER_ADDR
+struct ether_addr {
+	unsigned char ether_addr_octet[6];
+};
+#endif
+extern int ether_ntohost(char *, const struct ether_addr *);
+#endif
+
+#endif /* USE_ETHER_NTOHOST */
+
+#include <pcap.h>
+#include <pcap-namedb.h>
+#include <signal.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include "interface.h"
+#include "addrtoname.h"
+#include "llc.h"
+#include "setsignal.h"
+#include "extract.h"
+#include "oui.h"
+
+#ifndef ETHER_ADDR_LEN
+#define ETHER_ADDR_LEN	6
+#endif
+
+/*
+ * hash tables for whatever-to-name translations
+ *
+ * XXX there has to be error checks against strdup(3) failure
+ */
+
+#define HASHNAMESIZE 4096
+
+struct hnamemem {
+	u_int32_t addr;
+	const char *name;
+	struct hnamemem *nxt;
+};
+
+static struct hnamemem hnametable[HASHNAMESIZE];
+static struct hnamemem tporttable[HASHNAMESIZE];
+static struct hnamemem uporttable[HASHNAMESIZE];
+static struct hnamemem eprototable[HASHNAMESIZE];
+static struct hnamemem dnaddrtable[HASHNAMESIZE];
+static struct hnamemem ipxsaptable[HASHNAMESIZE];
+
+#if defined(INET6) && defined(WIN32)
+/*
+ * fake gethostbyaddr for Win2k/XP
+ * gethostbyaddr() returns incorrect value when AF_INET6 is passed
+ * to 3rd argument.
+ *
+ * h_name in struct hostent is only valid.
+ */
+static struct hostent *
+win32_gethostbyaddr(const char *addr, int len, int type)
+{
+	static struct hostent host;
+	static char hostbuf[NI_MAXHOST];
+	char hname[NI_MAXHOST];
+	struct sockaddr_in6 addr6;
+
+	host.h_name = hostbuf;
+	switch (type) {
+	case AF_INET:
+		return gethostbyaddr(addr, len, type);
+		break;
+	case AF_INET6:
+		memset(&addr6, 0, sizeof(addr6));
+		addr6.sin6_family = AF_INET6;
+		memcpy(&addr6.sin6_addr, addr, len);
+		if (getnameinfo((struct sockaddr *)&addr6, sizeof(addr6),
+		    hname, sizeof(hname), NULL, 0, 0)) {
+			return NULL;
+		} else {
+			strcpy(host.h_name, hname);
+			return &host;
+		}
+		break;
+	default:
+		return NULL;
+	}
+}
+#define gethostbyaddr win32_gethostbyaddr
+#endif /* INET6 & WIN32 */
+
+#ifdef INET6
+struct h6namemem {
+	struct in6_addr addr;
+	char *name;
+	struct h6namemem *nxt;
+};
+
+static struct h6namemem h6nametable[HASHNAMESIZE];
+#endif /* INET6 */
+
+struct enamemem {
+	u_short e_addr0;
+	u_short e_addr1;
+	u_short e_addr2;
+	const char *e_name;
+	u_char *e_nsap;			/* used only for nsaptable[] */
+#define e_bs e_nsap			/* for bytestringtable */
+	struct enamemem *e_nxt;
+};
+
+static struct enamemem enametable[HASHNAMESIZE];
+static struct enamemem nsaptable[HASHNAMESIZE];
+static struct enamemem bytestringtable[HASHNAMESIZE];
+
+struct protoidmem {
+	u_int32_t p_oui;
+	u_short p_proto;
+	const char *p_name;
+	struct protoidmem *p_nxt;
+};
+
+static struct protoidmem protoidtable[HASHNAMESIZE];
+
+/*
+ * A faster replacement for inet_ntoa().
+ */
+const char *
+intoa(u_int32_t addr)
+{
+	register char *cp;
+	register u_int byte;
+	register int n;
+	static char buf[sizeof(".xxx.xxx.xxx.xxx")];
+
+	NTOHL(addr);
+	cp = buf + sizeof(buf);
+	*--cp = '\0';
+
+	n = 4;
+	do {
+		byte = addr & 0xff;
+		*--cp = byte % 10 + '0';
+		byte /= 10;
+		if (byte > 0) {
+			*--cp = byte % 10 + '0';
+			byte /= 10;
+			if (byte > 0)
+				*--cp = byte + '0';
+		}
+		*--cp = '.';
+		addr >>= 8;
+	} while (--n > 0);
+
+	return cp + 1;
+}
+
+static u_int32_t f_netmask;
+static u_int32_t f_localnet;
+
+/*
+ * Return a name for the IP address pointed to by ap.  This address
+ * is assumed to be in network byte order.
+ *
+ * NOTE: ap is *NOT* necessarily part of the packet data (not even if
+ * this is being called with the "ipaddr_string()" macro), so you
+ * *CANNOT* use the TCHECK{2}/TTEST{2} macros on it.  Furthermore,
+ * even in cases where it *is* part of the packet data, the caller
+ * would still have to check for a null return value, even if it's
+ * just printing the return value with "%s" - not all versions of
+ * printf print "(null)" with "%s" and a null pointer, some of them
+ * don't check for a null pointer and crash in that case.
+ *
+ * The callers of this routine should, before handing this routine
+ * a pointer to packet data, be sure that the data is present in
+ * the packet buffer.  They should probably do those checks anyway,
+ * as other data at that layer might not be IP addresses, and it
+ * also needs to check whether they're present in the packet buffer.
+ */
+const char *
+getname(const u_char *ap)
+{
+	register struct hostent *hp;
+	u_int32_t addr;
+	static struct hnamemem *p;		/* static for longjmp() */
+
+	memcpy(&addr, ap, sizeof(addr));
+	p = &hnametable[addr & (HASHNAMESIZE-1)];
+	for (; p->nxt; p = p->nxt) {
+		if (p->addr == addr)
+			return (p->name);
+	}
+	p->addr = addr;
+	p->nxt = newhnamemem();
+
+	/*
+	 * Print names unless:
+	 *	(1) -n was given.
+	 *      (2) Address is foreign and -f was given. (If -f was not
+	 *	    given, f_netmask and f_localnet are 0 and the test
+	 *	    evaluates to true)
+	 */
+	if (!nflag &&
+	    (addr & f_netmask) == f_localnet) {
+		hp = gethostbyaddr((char *)&addr, 4, AF_INET);
+		if (hp) {
+			char *dotp;
+
+			p->name = strdup(hp->h_name);
+			if (Nflag) {
+				/* Remove domain qualifications */
+				dotp = strchr(p->name, '.');
+				if (dotp)
+					*dotp = '\0';
+			}
+			return (p->name);
+		}
+	}
+	p->name = strdup(intoa(addr));
+	return (p->name);
+}
+
+#ifdef INET6
+/*
+ * Return a name for the IP6 address pointed to by ap.  This address
+ * is assumed to be in network byte order.
+ */
+const char *
+getname6(const u_char *ap)
+{
+	register struct hostent *hp;
+	struct in6_addr addr;
+	static struct h6namemem *p;		/* static for longjmp() */
+	register const char *cp;
+	char ntop_buf[INET6_ADDRSTRLEN];
+
+	memcpy(&addr, ap, sizeof(addr));
+	p = &h6nametable[*(u_int16_t *)&addr.s6_addr[14] & (HASHNAMESIZE-1)];
+	for (; p->nxt; p = p->nxt) {
+		if (memcmp(&p->addr, &addr, sizeof(addr)) == 0)
+			return (p->name);
+	}
+	p->addr = addr;
+	p->nxt = newh6namemem();
+
+	/*
+	 * Do not print names if -n was given.
+	 */
+	if (!nflag) {
+		hp = gethostbyaddr((char *)&addr, sizeof(addr), AF_INET6);
+		if (hp) {
+			char *dotp;
+
+			p->name = strdup(hp->h_name);
+			if (Nflag) {
+				/* Remove domain qualifications */
+				dotp = strchr(p->name, '.');
+				if (dotp)
+					*dotp = '\0';
+			}
+			return (p->name);
+		}
+	}
+	cp = inet_ntop(AF_INET6, &addr, ntop_buf, sizeof(ntop_buf));
+	p->name = strdup(cp);
+	return (p->name);
+}
+#endif /* INET6 */
+
+static const char hex[] = "0123456789abcdef";
+
+
+/* Find the hash node that corresponds the ether address 'ep' */
+
+static inline struct enamemem *
+lookup_emem(const u_char *ep)
+{
+	register u_int i, j, k;
+	struct enamemem *tp;
+
+	k = (ep[0] << 8) | ep[1];
+	j = (ep[2] << 8) | ep[3];
+	i = (ep[4] << 8) | ep[5];
+
+	tp = &enametable[(i ^ j) & (HASHNAMESIZE-1)];
+	while (tp->e_nxt)
+		if (tp->e_addr0 == i &&
+		    tp->e_addr1 == j &&
+		    tp->e_addr2 == k)
+			return tp;
+		else
+			tp = tp->e_nxt;
+	tp->e_addr0 = i;
+	tp->e_addr1 = j;
+	tp->e_addr2 = k;
+	tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp));
+	if (tp->e_nxt == NULL)
+		error("lookup_emem: calloc");
+
+	return tp;
+}
+
+/*
+ * Find the hash node that corresponds to the bytestring 'bs'
+ * with length 'nlen'
+ */
+
+static inline struct enamemem *
+lookup_bytestring(register const u_char *bs, const unsigned int nlen)
+{
+	struct enamemem *tp;
+	register u_int i, j, k;
+
+	if (nlen >= 6) {
+		k = (bs[0] << 8) | bs[1];
+		j = (bs[2] << 8) | bs[3];
+		i = (bs[4] << 8) | bs[5];
+	} else if (nlen >= 4) {
+		k = (bs[0] << 8) | bs[1];
+		j = (bs[2] << 8) | bs[3];
+		i = 0;
+	} else
+		i = j = k = 0;
+
+	tp = &bytestringtable[(i ^ j) & (HASHNAMESIZE-1)];
+	while (tp->e_nxt)
+		if (tp->e_addr0 == i &&
+		    tp->e_addr1 == j &&
+		    tp->e_addr2 == k &&
+		    memcmp((const char *)bs, (const char *)(tp->e_bs), nlen) == 0)
+			return tp;
+		else
+			tp = tp->e_nxt;
+
+	tp->e_addr0 = i;
+	tp->e_addr1 = j;
+	tp->e_addr2 = k;
+
+	tp->e_bs = (u_char *) calloc(1, nlen + 1);
+	if (tp->e_bs == NULL)
+		error("lookup_bytestring: calloc");
+
+	memcpy(tp->e_bs, bs, nlen);
+	tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp));
+	if (tp->e_nxt == NULL)
+		error("lookup_bytestring: calloc");
+
+	return tp;
+}
+
+/* Find the hash node that corresponds the NSAP 'nsap' */
+
+static inline struct enamemem *
+lookup_nsap(register const u_char *nsap)
+{
+	register u_int i, j, k;
+	unsigned int nlen = *nsap;
+	struct enamemem *tp;
+	const u_char *ensap = nsap + nlen - 6;
+
+	if (nlen > 6) {
+		k = (ensap[0] << 8) | ensap[1];
+		j = (ensap[2] << 8) | ensap[3];
+		i = (ensap[4] << 8) | ensap[5];
+	}
+	else
+		i = j = k = 0;
+
+	tp = &nsaptable[(i ^ j) & (HASHNAMESIZE-1)];
+	while (tp->e_nxt)
+		if (tp->e_addr0 == i &&
+		    tp->e_addr1 == j &&
+		    tp->e_addr2 == k &&
+		    tp->e_nsap[0] == nlen &&
+		    memcmp((const char *)&(nsap[1]),
+			(char *)&(tp->e_nsap[1]), nlen) == 0)
+			return tp;
+		else
+			tp = tp->e_nxt;
+	tp->e_addr0 = i;
+	tp->e_addr1 = j;
+	tp->e_addr2 = k;
+	tp->e_nsap = (u_char *)malloc(nlen + 1);
+	if (tp->e_nsap == NULL)
+		error("lookup_nsap: malloc");
+	memcpy((char *)tp->e_nsap, (const char *)nsap, nlen + 1);
+	tp->e_nxt = (struct enamemem *)calloc(1, sizeof(*tp));
+	if (tp->e_nxt == NULL)
+		error("lookup_nsap: calloc");
+
+	return tp;
+}
+
+/* Find the hash node that corresponds the protoid 'pi'. */
+
+static inline struct protoidmem *
+lookup_protoid(const u_char *pi)
+{
+	register u_int i, j;
+	struct protoidmem *tp;
+
+	/* 5 octets won't be aligned */
+	i = (((pi[0] << 8) + pi[1]) << 8) + pi[2];
+	j =   (pi[3] << 8) + pi[4];
+	/* XXX should be endian-insensitive, but do big-endian testing  XXX */
+
+	tp = &protoidtable[(i ^ j) & (HASHNAMESIZE-1)];
+	while (tp->p_nxt)
+		if (tp->p_oui == i && tp->p_proto == j)
+			return tp;
+		else
+			tp = tp->p_nxt;
+	tp->p_oui = i;
+	tp->p_proto = j;
+	tp->p_nxt = (struct protoidmem *)calloc(1, sizeof(*tp));
+	if (tp->p_nxt == NULL)
+		error("lookup_protoid: calloc");
+
+	return tp;
+}
+
+const char *
+etheraddr_string(register const u_char *ep)
+{
+	register int i;
+	register char *cp;
+	register struct enamemem *tp;
+	int oui;
+	char buf[BUFSIZE];
+
+	tp = lookup_emem(ep);
+	if (tp->e_name)
+		return (tp->e_name);
+#ifdef USE_ETHER_NTOHOST
+	if (!nflag) {
+		char buf2[BUFSIZE];
+
+		/*
+		 * We don't cast it to "const struct ether_addr *"
+		 * because some systems fail to declare the second
+		 * argument as a "const" pointer, even though they
+		 * don't modify what it points to.
+		 */
+		if (ether_ntohost(buf2, (struct ether_addr *)ep) == 0) {
+			tp->e_name = strdup(buf2);
+			return (tp->e_name);
+		}
+	}
+#endif
+	cp = buf;
+	oui = EXTRACT_24BITS(ep);
+	*cp++ = hex[*ep >> 4 ];
+	*cp++ = hex[*ep++ & 0xf];
+	for (i = 5; --i >= 0;) {
+		*cp++ = ':';
+		*cp++ = hex[*ep >> 4 ];
+		*cp++ = hex[*ep++ & 0xf];
+	}
+
+	if (!nflag) {
+		snprintf(cp, BUFSIZE - (2 + 5*3), " (oui %s)",
+		    tok2str(oui_values, "Unknown", oui));
+	} else
+		*cp = '\0';
+	tp->e_name = strdup(buf);
+	return (tp->e_name);
+}
+
+const char *
+le64addr_string(const u_char *ep)
+{
+	const unsigned int len = 8;
+	register u_int i;
+	register char *cp;
+	register struct enamemem *tp;
+	char buf[BUFSIZE];
+
+	tp = lookup_bytestring(ep, len);
+	if (tp->e_name)
+		return (tp->e_name);
+
+	cp = buf;
+	for (i = len; i > 0 ; --i) {
+		*cp++ = hex[*(ep + i - 1) >> 4];
+		*cp++ = hex[*(ep + i - 1) & 0xf];
+		*cp++ = ':';
+	}
+	cp --;
+
+	*cp = '\0';
+
+	tp->e_name = strdup(buf);
+
+	return (tp->e_name);
+}
+
+const char *
+linkaddr_string(const u_char *ep, const unsigned int type, const unsigned int len)
+{
+	register u_int i;
+	register char *cp;
+	register struct enamemem *tp;
+
+	if (len == 0)
+		return ("<empty>");
+
+	if (type == LINKADDR_ETHER && len == ETHER_ADDR_LEN)
+		return (etheraddr_string(ep));
+
+	if (type == LINKADDR_FRELAY)
+		return (q922_string(ep));
+
+	tp = lookup_bytestring(ep, len);
+	if (tp->e_name)
+		return (tp->e_name);
+
+	tp->e_name = cp = (char *)malloc(len*3);
+	if (tp->e_name == NULL)
+		error("linkaddr_string: malloc");
+	*cp++ = hex[*ep >> 4];
+	*cp++ = hex[*ep++ & 0xf];
+	for (i = len-1; i > 0 ; --i) {
+		*cp++ = ':';
+		*cp++ = hex[*ep >> 4];
+		*cp++ = hex[*ep++ & 0xf];
+	}
+	*cp = '\0';
+	return (tp->e_name);
+}
+
+const char *
+etherproto_string(u_short port)
+{
+	register char *cp;
+	register struct hnamemem *tp;
+	register u_int32_t i = port;
+	char buf[sizeof("0000")];
+
+	for (tp = &eprototable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt)
+		if (tp->addr == i)
+			return (tp->name);
+
+	tp->addr = i;
+	tp->nxt = newhnamemem();
+
+	cp = buf;
+	NTOHS(port);
+	*cp++ = hex[port >> 12 & 0xf];
+	*cp++ = hex[port >> 8 & 0xf];
+	*cp++ = hex[port >> 4 & 0xf];
+	*cp++ = hex[port & 0xf];
+	*cp++ = '\0';
+	tp->name = strdup(buf);
+	return (tp->name);
+}
+
+const char *
+protoid_string(register const u_char *pi)
+{
+	register u_int i, j;
+	register char *cp;
+	register struct protoidmem *tp;
+	char buf[sizeof("00:00:00:00:00")];
+
+	tp = lookup_protoid(pi);
+	if (tp->p_name)
+		return tp->p_name;
+
+	cp = buf;
+	if ((j = *pi >> 4) != 0)
+		*cp++ = hex[j];
+	*cp++ = hex[*pi++ & 0xf];
+	for (i = 4; (int)--i >= 0;) {
+		*cp++ = ':';
+		if ((j = *pi >> 4) != 0)
+			*cp++ = hex[j];
+		*cp++ = hex[*pi++ & 0xf];
+	}
+	*cp = '\0';
+	tp->p_name = strdup(buf);
+	return (tp->p_name);
+}
+
+#define ISONSAP_MAX_LENGTH 20
+const char *
+isonsap_string(const u_char *nsap, register u_int nsap_length)
+{
+	register u_int nsap_idx;
+	register char *cp;
+	register struct enamemem *tp;
+
+	if (nsap_length < 1 || nsap_length > ISONSAP_MAX_LENGTH)
+		return ("isonsap_string: illegal length");
+
+	tp = lookup_nsap(nsap);
+	if (tp->e_name)
+		return tp->e_name;
+
+	tp->e_name = cp = (char *)malloc(sizeof("xx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xxxx.xx"));
+	if (cp == NULL)
+		error("isonsap_string: malloc");
+
+	for (nsap_idx = 0; nsap_idx < nsap_length; nsap_idx++) {
+		*cp++ = hex[*nsap >> 4];
+		*cp++ = hex[*nsap++ & 0xf];
+		if (((nsap_idx & 1) == 0) &&
+		     (nsap_idx + 1 < nsap_length)) {
+		     	*cp++ = '.';
+		}
+	}
+	*cp = '\0';
+	return (tp->e_name);
+}
+
+const char *
+tcpport_string(u_short port)
+{
+	register struct hnamemem *tp;
+	register u_int32_t i = port;
+	char buf[sizeof("00000")];
+
+	for (tp = &tporttable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt)
+		if (tp->addr == i)
+			return (tp->name);
+
+	tp->addr = i;
+	tp->nxt = newhnamemem();
+
+	(void)snprintf(buf, sizeof(buf), "%u", i);
+	tp->name = strdup(buf);
+	return (tp->name);
+}
+
+const char *
+udpport_string(register u_short port)
+{
+	register struct hnamemem *tp;
+	register u_int32_t i = port;
+	char buf[sizeof("00000")];
+
+	for (tp = &uporttable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt)
+		if (tp->addr == i)
+			return (tp->name);
+
+	tp->addr = i;
+	tp->nxt = newhnamemem();
+
+	(void)snprintf(buf, sizeof(buf), "%u", i);
+	tp->name = strdup(buf);
+	return (tp->name);
+}
+
+const char *
+ipxsap_string(u_short port)
+{
+	register char *cp;
+	register struct hnamemem *tp;
+	register u_int32_t i = port;
+	char buf[sizeof("0000")];
+
+	for (tp = &ipxsaptable[i & (HASHNAMESIZE-1)]; tp->nxt; tp = tp->nxt)
+		if (tp->addr == i)
+			return (tp->name);
+
+	tp->addr = i;
+	tp->nxt = newhnamemem();
+
+	cp = buf;
+	NTOHS(port);
+	*cp++ = hex[port >> 12 & 0xf];
+	*cp++ = hex[port >> 8 & 0xf];
+	*cp++ = hex[port >> 4 & 0xf];
+	*cp++ = hex[port & 0xf];
+	*cp++ = '\0';
+	tp->name = strdup(buf);
+	return (tp->name);
+}
+
+static void
+init_servarray(void)
+{
+	struct servent *sv;
+	register struct hnamemem *table;
+	register int i;
+	char buf[sizeof("0000000000")];
+
+	while ((sv = getservent()) != NULL) {
+		int port = ntohs(sv->s_port);
+		i = port & (HASHNAMESIZE-1);
+		if (strcmp(sv->s_proto, "tcp") == 0)
+			table = &tporttable[i];
+		else if (strcmp(sv->s_proto, "udp") == 0)
+			table = &uporttable[i];
+		else
+			continue;
+
+		while (table->name)
+			table = table->nxt;
+		if (nflag) {
+			(void)snprintf(buf, sizeof(buf), "%d", port);
+			table->name = strdup(buf);
+		} else
+			table->name = strdup(sv->s_name);
+		table->addr = port;
+		table->nxt = newhnamemem();
+	}
+	endservent();
+}
+
+/* in libpcap.a (nametoaddr.c) */
+#if defined(WIN32) && !defined(USE_STATIC_LIBPCAP)
+__declspec(dllimport)
+#else
+extern
+#endif
+const struct eproto {
+	const char *s;
+	u_short p;
+} eproto_db[];
+
+static void
+init_eprotoarray(void)
+{
+	register int i;
+	register struct hnamemem *table;
+
+	for (i = 0; eproto_db[i].s; i++) {
+		int j = htons(eproto_db[i].p) & (HASHNAMESIZE-1);
+		table = &eprototable[j];
+		while (table->name)
+			table = table->nxt;
+		table->name = eproto_db[i].s;
+		table->addr = htons(eproto_db[i].p);
+		table->nxt = newhnamemem();
+	}
+}
+
+static const struct protoidlist {
+	const u_char protoid[5];
+	const char *name;
+} protoidlist[] = {
+	{{ 0x00, 0x00, 0x0c, 0x01, 0x07 }, "CiscoMLS" },
+	{{ 0x00, 0x00, 0x0c, 0x20, 0x00 }, "CiscoCDP" },
+	{{ 0x00, 0x00, 0x0c, 0x20, 0x01 }, "CiscoCGMP" },
+	{{ 0x00, 0x00, 0x0c, 0x20, 0x03 }, "CiscoVTP" },
+	{{ 0x00, 0xe0, 0x2b, 0x00, 0xbb }, "ExtremeEDP" },
+	{{ 0x00, 0x00, 0x00, 0x00, 0x00 }, NULL }
+};
+
+/*
+ * SNAP proto IDs with org code 0:0:0 are actually encapsulated Ethernet
+ * types.
+ */
+static void
+init_protoidarray(void)
+{
+	register int i;
+	register struct protoidmem *tp;
+	const struct protoidlist *pl;
+	u_char protoid[5];
+
+	protoid[0] = 0;
+	protoid[1] = 0;
+	protoid[2] = 0;
+	for (i = 0; eproto_db[i].s; i++) {
+		u_short etype = htons(eproto_db[i].p);
+
+		memcpy((char *)&protoid[3], (char *)&etype, 2);
+		tp = lookup_protoid(protoid);
+		tp->p_name = strdup(eproto_db[i].s);
+	}
+	/* Hardwire some SNAP proto ID names */
+	for (pl = protoidlist; pl->name != NULL; ++pl) {
+		tp = lookup_protoid(pl->protoid);
+		/* Don't override existing name */
+		if (tp->p_name != NULL)
+			continue;
+
+		tp->p_name = pl->name;
+	}
+}
+
+static const struct etherlist {
+	const u_char addr[6];
+	const char *name;
+} etherlist[] = {
+	{{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }, "Broadcast" },
+	{{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, NULL }
+};
+
+/*
+ * Initialize the ethers hash table.  We take two different approaches
+ * depending on whether or not the system provides the ethers name
+ * service.  If it does, we just wire in a few names at startup,
+ * and etheraddr_string() fills in the table on demand.  If it doesn't,
+ * then we suck in the entire /etc/ethers file at startup.  The idea
+ * is that parsing the local file will be fast, but spinning through
+ * all the ethers entries via NIS & next_etherent might be very slow.
+ *
+ * XXX pcap_next_etherent doesn't belong in the pcap interface, but
+ * since the pcap module already does name-to-address translation,
+ * it's already does most of the work for the ethernet address-to-name
+ * translation, so we just pcap_next_etherent as a convenience.
+ */
+static void
+init_etherarray(void)
+{
+	register const struct etherlist *el;
+	register struct enamemem *tp;
+#ifdef USE_ETHER_NTOHOST
+	char name[256];
+#else
+	register struct pcap_etherent *ep;
+	register FILE *fp;
+
+	/* Suck in entire ethers file */
+	fp = fopen(PCAP_ETHERS_FILE, "r");
+	if (fp != NULL) {
+		while ((ep = pcap_next_etherent(fp)) != NULL) {
+			tp = lookup_emem(ep->addr);
+			tp->e_name = strdup(ep->name);
+		}
+		(void)fclose(fp);
+	}
+#endif
+
+	/* Hardwire some ethernet names */
+	for (el = etherlist; el->name != NULL; ++el) {
+		tp = lookup_emem(el->addr);
+		/* Don't override existing name */
+		if (tp->e_name != NULL)
+			continue;
+
+#ifdef USE_ETHER_NTOHOST
+		/*
+		 * Use YP/NIS version of name if available.
+		 *
+		 * We don't cast it to "const struct ether_addr *"
+		 * because some systems don't modify the Ethernet
+		 * address but fail to declare the second argument
+		 * as a "const" pointer.
+		 */
+		if (ether_ntohost(name, (struct ether_addr *)el->addr) == 0) {
+			tp->e_name = strdup(name);
+			continue;
+		}
+#endif
+		tp->e_name = el->name;
+	}
+}
+
+static const struct tok ipxsap_db[] = {
+	{ 0x0000, "Unknown" },
+	{ 0x0001, "User" },
+	{ 0x0002, "User Group" },
+	{ 0x0003, "PrintQueue" },
+	{ 0x0004, "FileServer" },
+	{ 0x0005, "JobServer" },
+	{ 0x0006, "Gateway" },
+	{ 0x0007, "PrintServer" },
+	{ 0x0008, "ArchiveQueue" },
+	{ 0x0009, "ArchiveServer" },
+	{ 0x000a, "JobQueue" },
+	{ 0x000b, "Administration" },
+	{ 0x000F, "Novell TI-RPC" },
+	{ 0x0017, "Diagnostics" },
+	{ 0x0020, "NetBIOS" },
+	{ 0x0021, "NAS SNA Gateway" },
+	{ 0x0023, "NACS AsyncGateway" },
+	{ 0x0024, "RemoteBridge/RoutingService" },
+	{ 0x0026, "BridgeServer" },
+	{ 0x0027, "TCP/IP Gateway" },
+	{ 0x0028, "Point-to-point X.25 BridgeServer" },
+	{ 0x0029, "3270 Gateway" },
+	{ 0x002a, "CHI Corp" },
+	{ 0x002c, "PC Chalkboard" },
+	{ 0x002d, "TimeSynchServer" },
+	{ 0x002e, "ARCserve5.0/PalindromeBackup" },
+	{ 0x0045, "DI3270 Gateway" },
+	{ 0x0047, "AdvertisingPrintServer" },
+	{ 0x004a, "NetBlazerModems" },
+	{ 0x004b, "BtrieveVAP" },
+	{ 0x004c, "NetwareSQL" },
+	{ 0x004d, "XtreeNetwork" },
+	{ 0x0050, "BtrieveVAP4.11" },
+	{ 0x0052, "QuickLink" },
+	{ 0x0053, "PrintQueueUser" },
+	{ 0x0058, "Multipoint X.25 Router" },
+	{ 0x0060, "STLB/NLM" },
+	{ 0x0064, "ARCserve" },
+	{ 0x0066, "ARCserve3.0" },
+	{ 0x0072, "WAN CopyUtility" },
+	{ 0x007a, "TES-NetwareVMS" },
+	{ 0x0092, "WATCOM Debugger/EmeraldTapeBackupServer" },
+	{ 0x0095, "DDA OBGYN" },
+	{ 0x0098, "NetwareAccessServer" },
+	{ 0x009a, "Netware for VMS II/NamedPipeServer" },
+	{ 0x009b, "NetwareAccessServer" },
+	{ 0x009e, "PortableNetwareServer/SunLinkNVT" },
+	{ 0x00a1, "PowerchuteAPC UPS" },
+	{ 0x00aa, "LAWserve" },
+	{ 0x00ac, "CompaqIDA StatusMonitor" },
+	{ 0x0100, "PIPE STAIL" },
+	{ 0x0102, "LAN ProtectBindery" },
+	{ 0x0103, "OracleDataBaseServer" },
+	{ 0x0107, "Netware386/RSPX RemoteConsole" },
+	{ 0x010f, "NovellSNA Gateway" },
+	{ 0x0111, "TestServer" },
+	{ 0x0112, "HP PrintServer" },
+	{ 0x0114, "CSA MUX" },
+	{ 0x0115, "CSA LCA" },
+	{ 0x0116, "CSA CM" },
+	{ 0x0117, "CSA SMA" },
+	{ 0x0118, "CSA DBA" },
+	{ 0x0119, "CSA NMA" },
+	{ 0x011a, "CSA SSA" },
+	{ 0x011b, "CSA STATUS" },
+	{ 0x011e, "CSA APPC" },
+	{ 0x0126, "SNA TEST SSA Profile" },
+	{ 0x012a, "CSA TRACE" },
+	{ 0x012b, "NetwareSAA" },
+	{ 0x012e, "IKARUS VirusScan" },
+	{ 0x0130, "CommunicationsExecutive" },
+	{ 0x0133, "NNS DomainServer/NetwareNamingServicesDomain" },
+	{ 0x0135, "NetwareNamingServicesProfile" },
+	{ 0x0137, "Netware386 PrintQueue/NNS PrintQueue" },
+	{ 0x0141, "LAN SpoolServer" },
+	{ 0x0152, "IRMALAN Gateway" },
+	{ 0x0154, "NamedPipeServer" },
+	{ 0x0166, "NetWareManagement" },
+	{ 0x0168, "Intel PICKIT CommServer/Intel CAS TalkServer" },
+	{ 0x0173, "Compaq" },
+	{ 0x0174, "Compaq SNMP Agent" },
+	{ 0x0175, "Compaq" },
+	{ 0x0180, "XTreeServer/XTreeTools" },
+	{ 0x018A, "NASI ServicesBroadcastServer" },
+	{ 0x01b0, "GARP Gateway" },
+	{ 0x01b1, "Binfview" },
+	{ 0x01bf, "IntelLanDeskManager" },
+	{ 0x01ca, "AXTEC" },
+	{ 0x01cb, "ShivaNetModem/E" },
+	{ 0x01cc, "ShivaLanRover/E" },
+	{ 0x01cd, "ShivaLanRover/T" },
+	{ 0x01ce, "ShivaUniversal" },
+	{ 0x01d8, "CastelleFAXPressServer" },
+	{ 0x01da, "CastelleLANPressPrintServer" },
+	{ 0x01dc, "CastelleFAX/Xerox7033 FaxServer/ExcelLanFax" },
+	{ 0x01f0, "LEGATO" },
+	{ 0x01f5, "LEGATO" },
+	{ 0x0233, "NMS Agent/NetwareManagementAgent" },
+	{ 0x0237, "NMS IPX Discovery/LANternReadWriteChannel" },
+	{ 0x0238, "NMS IP Discovery/LANternTrapAlarmChannel" },
+	{ 0x023a, "LANtern" },
+	{ 0x023c, "MAVERICK" },
+	{ 0x023f, "NovellSMDR" },
+	{ 0x024e, "NetwareConnect" },
+	{ 0x024f, "NASI ServerBroadcast Cisco" },
+	{ 0x026a, "NMS ServiceConsole" },
+	{ 0x026b, "TimeSynchronizationServer Netware 4.x" },
+	{ 0x0278, "DirectoryServer Netware 4.x" },
+	{ 0x027b, "NetwareManagementAgent" },
+	{ 0x0280, "Novell File and Printer Sharing Service for PC" },
+	{ 0x0304, "NovellSAA Gateway" },
+	{ 0x0308, "COM/VERMED" },
+	{ 0x030a, "GalacticommWorldgroupServer" },
+	{ 0x030c, "IntelNetport2/HP JetDirect/HP Quicksilver" },
+	{ 0x0320, "AttachmateGateway" },
+	{ 0x0327, "MicrosoftDiagnostiocs" },
+	{ 0x0328, "WATCOM SQL Server" },
+	{ 0x0335, "MultiTechSystems MultisynchCommServer" },
+	{ 0x0343, "Xylogics RemoteAccessServer/LANModem" },
+	{ 0x0355, "ArcadaBackupExec" },
+	{ 0x0358, "MSLCD1" },
+	{ 0x0361, "NETINELO" },
+	{ 0x037e, "Powerchute UPS Monitoring" },
+	{ 0x037f, "ViruSafeNotify" },
+	{ 0x0386, "HP Bridge" },
+	{ 0x0387, "HP Hub" },
+	{ 0x0394, "NetWare SAA Gateway" },
+	{ 0x039b, "LotusNotes" },
+	{ 0x03b7, "CertusAntiVirus" },
+	{ 0x03c4, "ARCserve4.0" },
+	{ 0x03c7, "LANspool3.5" },
+	{ 0x03d7, "LexmarkPrinterServer" },
+	{ 0x03d8, "LexmarkXLE PrinterServer" },
+	{ 0x03dd, "BanyanENS NetwareClient" },
+	{ 0x03de, "GuptaSequelBaseServer/NetWareSQL" },
+	{ 0x03e1, "UnivelUnixware" },
+	{ 0x03e4, "UnivelUnixware" },
+	{ 0x03fc, "IntelNetport" },
+	{ 0x03fd, "PrintServerQueue" },
+	{ 0x040A, "ipnServer" },
+	{ 0x040D, "LVERRMAN" },
+	{ 0x040E, "LVLIC" },
+	{ 0x0414, "NET Silicon (DPI)/Kyocera" },
+	{ 0x0429, "SiteLockVirus" },
+	{ 0x0432, "UFHELPR???" },
+	{ 0x0433, "Synoptics281xAdvancedSNMPAgent" },
+	{ 0x0444, "MicrosoftNT SNA Server" },
+	{ 0x0448, "Oracle" },
+	{ 0x044c, "ARCserve5.01" },
+	{ 0x0457, "CanonGP55" },
+	{ 0x045a, "QMS Printers" },
+	{ 0x045b, "DellSCSI Array" },
+	{ 0x0491, "NetBlazerModems" },
+	{ 0x04ac, "OnTimeScheduler" },
+	{ 0x04b0, "CD-Net" },
+	{ 0x0513, "EmulexNQA" },
+	{ 0x0520, "SiteLockChecks" },
+	{ 0x0529, "SiteLockChecks" },
+	{ 0x052d, "CitrixOS2 AppServer" },
+	{ 0x0535, "Tektronix" },
+	{ 0x0536, "Milan" },
+	{ 0x055d, "Attachmate SNA gateway" },
+	{ 0x056b, "IBM8235 ModemServer" },
+	{ 0x056c, "ShivaLanRover/E PLUS" },
+	{ 0x056d, "ShivaLanRover/T PLUS" },
+	{ 0x0580, "McAfeeNetShield" },
+	{ 0x05B8, "NLM to workstation communication (Revelation Software)" },
+	{ 0x05BA, "CompatibleSystemsRouters" },
+	{ 0x05BE, "CheyenneHierarchicalStorageManager" },
+	{ 0x0606, "JCWatermarkImaging" },
+	{ 0x060c, "AXISNetworkPrinter" },
+	{ 0x0610, "AdaptecSCSIManagement" },
+	{ 0x0621, "IBM AntiVirus" },
+	{ 0x0640, "Windows95 RemoteRegistryService" },
+	{ 0x064e, "MicrosoftIIS" },
+	{ 0x067b, "Microsoft Win95/98 File and Print Sharing for NetWare" },
+	{ 0x067c, "Microsoft Win95/98 File and Print Sharing for NetWare" },
+	{ 0x076C, "Xerox" },
+	{ 0x079b, "ShivaLanRover/E 115" },
+	{ 0x079c, "ShivaLanRover/T 115" },
+	{ 0x07B4, "CubixWorldDesk" },
+	{ 0x07c2, "Quarterdeck IWare Connect V2.x NLM" },
+	{ 0x07c1, "Quarterdeck IWare Connect V3.x NLM" },
+	{ 0x0810, "ELAN License Server Demo" },
+	{ 0x0824, "ShivaLanRoverAccessSwitch/E" },
+	{ 0x086a, "ISSC Collector" },
+	{ 0x087f, "ISSC DAS AgentAIX" },
+	{ 0x0880, "Intel Netport PRO" },
+	{ 0x0881, "Intel Netport PRO" },
+	{ 0x0b29, "SiteLock" },
+	{ 0x0c29, "SiteLockApplications" },
+	{ 0x0c2c, "LicensingServer" },
+	{ 0x2101, "PerformanceTechnologyInstantInternet" },
+	{ 0x2380, "LAI SiteLock" },
+	{ 0x238c, "MeetingMaker" },
+	{ 0x4808, "SiteLockServer/SiteLockMetering" },
+	{ 0x5555, "SiteLockUser" },
+	{ 0x6312, "Tapeware" },
+	{ 0x6f00, "RabbitGateway" },
+	{ 0x7703, "MODEM" },
+	{ 0x8002, "NetPortPrinters" },
+	{ 0x8008, "WordPerfectNetworkVersion" },
+	{ 0x85BE, "Cisco EIGRP" },
+	{ 0x8888, "WordPerfectNetworkVersion/QuickNetworkManagement" },
+	{ 0x9000, "McAfeeNetShield" },
+	{ 0x9604, "CSA-NT_MON" },
+	{ 0xb6a8, "OceanIsleReachoutRemoteControl" },
+	{ 0xf11f, "SiteLockMetering" },
+	{ 0xf1ff, "SiteLock" },
+	{ 0xf503, "Microsoft SQL Server" },
+	{ 0xF905, "IBM TimeAndPlace" },
+	{ 0xfbfb, "TopCallIII FaxServer" },
+	{ 0xffff, "AnyService/Wildcard" },
+	{ 0, (char *)0 }
+};
+
+static void
+init_ipxsaparray(void)
+{
+	register int i;
+	register struct hnamemem *table;
+
+	for (i = 0; ipxsap_db[i].s != NULL; i++) {
+		int j = htons(ipxsap_db[i].v) & (HASHNAMESIZE-1);
+		table = &ipxsaptable[j];
+		while (table->name)
+			table = table->nxt;
+		table->name = ipxsap_db[i].s;
+		table->addr = htons(ipxsap_db[i].v);
+		table->nxt = newhnamemem();
+	}
+}
+
+/*
+ * Initialize the address to name translation machinery.  We map all
+ * non-local IP addresses to numeric addresses if fflag is true (i.e.,
+ * to prevent blocking on the nameserver).  localnet is the IP address
+ * of the local network.  mask is its subnet mask.
+ */
+void
+init_addrtoname(u_int32_t localnet, u_int32_t mask)
+{
+	if (fflag) {
+		f_localnet = localnet;
+		f_netmask = mask;
+	}
+	if (nflag)
+		/*
+		 * Simplest way to suppress names.
+		 */
+		return;
+
+	init_etherarray();
+	init_servarray();
+	init_eprotoarray();
+	init_protoidarray();
+	init_ipxsaparray();
+}
+
+const char *
+dnaddr_string(u_short dnaddr)
+{
+	register struct hnamemem *tp;
+
+	for (tp = &dnaddrtable[dnaddr & (HASHNAMESIZE-1)]; tp->nxt != 0;
+	     tp = tp->nxt)
+		if (tp->addr == dnaddr)
+			return (tp->name);
+
+	tp->addr = dnaddr;
+	tp->nxt = newhnamemem();
+	if (nflag)
+		tp->name = dnnum_string(dnaddr);
+	else
+		tp->name = dnname_string(dnaddr);
+
+	return(tp->name);
+}
+
+/* Return a zero'ed hnamemem struct and cuts down on calloc() overhead */
+struct hnamemem *
+newhnamemem(void)
+{
+	register struct hnamemem *p;
+	static struct hnamemem *ptr = NULL;
+	static u_int num = 0;
+
+	if (num  <= 0) {
+		num = 64;
+		ptr = (struct hnamemem *)calloc(num, sizeof (*ptr));
+		if (ptr == NULL)
+			error("newhnamemem: calloc");
+	}
+	--num;
+	p = ptr++;
+	return (p);
+}
+
+#ifdef INET6
+/* Return a zero'ed h6namemem struct and cuts down on calloc() overhead */
+struct h6namemem *
+newh6namemem(void)
+{
+	register struct h6namemem *p;
+	static struct h6namemem *ptr = NULL;
+	static u_int num = 0;
+
+	if (num  <= 0) {
+		num = 64;
+		ptr = (struct h6namemem *)calloc(num, sizeof (*ptr));
+		if (ptr == NULL)
+			error("newh6namemem: calloc");
+	}
+	--num;
+	p = ptr++;
+	return (p);
+}
+#endif /* INET6 */