Update to IPFilter 3.3.8. Man pages still to go. See sbin/ipf/HISTORY

for details.

19 files changed, 136 insertions, 109 deletions

diff --git a/sys/netinet/fil.c b/sys/netinet/fil.c
index eff9d8d23b1..a51f2b0c4bc 100644
--- a/sys/netinet/fil.c
+++ b/sys/netinet/fil.c
@@ -1,4 +1,5 @@
-/*       $OpenBSD: fil.c,v 1.19 1999/12/17 06:17:07 kjell Exp $       */
+/*	$OpenBSD: fil.c,v 1.20 2000/02/01 19:29:57 kjell Exp $	*/
+
 /*
  * Copyright (C) 1993-1998 by Darren Reed.
  *
@@ -8,7 +9,7 @@
  */
 #if !defined(lint)
 static const char sccsid[] = "@(#)fil.c	1.36 6/5/96 (C) 1993-1996 Darren Reed";
-static const char rcsid[] = "@(#)$Id: fil.c,v 1.19 1999/12/17 06:17:07 kjell Exp $";
+static const char rcsid[] = "@(#)$IPFilter: fil.c,v 2.3.2.16 2000/01/27 08:49:37 darrenr Exp $";
 #endif
 
 #include <sys/errno.h>
@@ -246,6 +247,12 @@ fr_info_t *fin;
 		if (!off && (icmp->icmp_type == ICMP_ECHOREPLY ||
 		     icmp->icmp_type == ICMP_ECHO))
 			minicmpsz = ICMP_MINLEN;
+		if (!off && (icmp->icmp_type == ICMP_TSTAMP ||
+		     icmp->icmp_type == ICMP_TSTAMPREPLY))
+			minicmpsz = 20; /* type(1) + code(1) + cksum(2) + id(2) + seq(2) + 3*timestamp(3*4) */
+		if (!off && (icmp->icmp_type == ICMP_MASKREQ ||
+		     icmp->icmp_type == ICMP_MASKREPLY))
+			minicmpsz = 12; /* type(1) + code(1) + cksum(2) + id(2) + seq(2) + mask(4) */
 		if ((!(ip->ip_len >= hlen + minicmpsz) && !off) ||
 		    (off && off < sizeof(struct icmp)))
 			fi->fi_fl |= FI_SHORT;
@@ -631,7 +638,7 @@ int out;
 			case IPPROTO_UDP:
 				plen = sizeof(udphdr_t);
 				break;
-			/* need enough for complete ICMP error IP header */
+			/* 96 - enough for complete ICMP error IP header */
 			case IPPROTO_ICMP:
 				plen = ICMPERR_MAXPKTLEN - sizeof(ip_t);
 				break;
@@ -689,6 +696,9 @@ int out;
 
 	READ_ENTER(&ipf_mutex);
 
+	if (fin->fin_fi.fi_fl & FI_SHORT)
+		ATOMIC_INC(frstats[out].fr_short);
+	
 	/*
 	 * Check auth now.  This, combined with the check below to see if apass
 	 * is 0 is to ensure that we don't count the packet twice, which can
@@ -1179,7 +1189,7 @@ nodata:
  * SUCH DAMAGE.
  *
  *	@(#)uipc_mbuf.c	8.2 (Berkeley) 1/4/94
- * $Id: fil.c,v 1.19 1999/12/17 06:17:07 kjell Exp $
+ * $IPFilter: fil.c,v 2.3.2.16 2000/01/27 08:49:37 darrenr Exp $
  */
 /*
  * Copy data from an mbuf chain starting "off" bytes from the beginning,
@@ -1580,7 +1590,10 @@ void frsync()
 #  else
 	for (ifp = ifnet; ifp; ifp = ifp->if_next)
 #  endif
+	{
 		ip_natsync(ifp);
+		ip_statesync(ifp);
+	}
 # endif
 
 	WRITE_ENTER(&ipf_mutex);
diff --git a/sys/netinet/ip_auth.c b/sys/netinet/ip_auth.c
index ad69de43d9d..bca4a7a5da6 100644
--- a/sys/netinet/ip_auth.c
+++ b/sys/netinet/ip_auth.c
@@ -1,4 +1,5 @@
-/* $OpenBSD: ip_auth.c,v 1.9 1999/12/15 05:20:21 kjell Exp $ */
+/*	$OpenBSD: ip_auth.c,v 1.10 2000/02/01 19:29:58 kjell Exp $	*/
+
 /*
  * Copyright (C) 1998 by Darren Reed & Guido van Rooij.
  *
@@ -7,7 +8,7 @@
  * to the original author and the contributors.
  */
 #if !defined(lint)
-static const char rcsid[] = "@(#)$Id: ip_auth.c,v 1.9 1999/12/15 05:20:21 kjell Exp $";
+static const char rcsid[] = "@(#)$IPFilter: ip_auth.c,v 2.1.2.2 2000/01/16 10:12:14 darrenr Exp $";
 #endif
 
 #include <sys/errno.h>
@@ -397,7 +398,7 @@ fr_authioctlloop:
 #  if SOLARIS
 			error = fr_qout(fr_auth[i].fra_q, m);
 #  else /* SOLARIS */
-#   if ((_BSDI_VERSION >= 199802) || defined(__OpenBSD__))
+#   if (_BSDI_VERSION >= 199802) || defined(__OpenBSD__)
 			error = ip_output(m, NULL, NULL, IP_FORWARDING, NULL,
 					  NULL);
 #   else
diff --git a/sys/netinet/ip_auth.h b/sys/netinet/ip_auth.h
index 7f6dead90e7..2e6492ea84a 100644
--- a/sys/netinet/ip_auth.h
+++ b/sys/netinet/ip_auth.h
@@ -1,4 +1,5 @@
-/* $OpenBSD: ip_auth.h,v 1.4 1999/12/15 05:20:21 kjell Exp $ */
+/*	$OpenBSD: ip_auth.h,v 1.5 2000/02/01 19:29:58 kjell Exp $	*/
+
 /*
  * Copyright (C) 1997-1998 by Darren Reed & Guido Van Rooij.
  *
@@ -6,7 +7,7 @@
  * provided that this notice is preserved and due credit is given
  * to the original author and the contributors.
  *
- * $Id: ip_auth.h,v 1.4 1999/12/15 05:20:21 kjell Exp $
+ * $IPFilter: ip_auth.h,v 2.1 1999/08/04 17:29:54 darrenr Exp $
  *
  */
 #ifndef	__IP_AUTH_H__
diff --git a/sys/netinet/ip_fil.c b/sys/netinet/ip_fil.c
index 45a71603e54..681c9475688 100644
--- a/sys/netinet/ip_fil.c
+++ b/sys/netinet/ip_fil.c
@@ -1,4 +1,5 @@
-/*    $OpenBSD: ip_fil.c,v 1.28 1999/12/17 06:17:08 kjell Exp $    */
+/*	$OpenBSD: ip_fil.c,v 1.29 2000/02/01 19:29:58 kjell Exp $	*/
+
 /*
  * Copyright (C) 1993-1998 by Darren Reed.
  *
@@ -8,7 +9,7 @@
  */
 #if !defined(lint)
 static const char sccsid[] = "@(#)ip_fil.c	2.41 6/5/96 (C) 1993-1995 Darren Reed";
-static const char rcsid[] = "@(#)$Id: ip_fil.c,v 1.28 1999/12/17 06:17:08 kjell Exp $";
+static const char rcsid[] = "@(#)$IPFilter: ip_fil.c,v 2.4.2.16 2000/01/16 10:12:42 darrenr Exp $";
 #endif
 
 #ifndef	SOLARIS
@@ -127,7 +128,6 @@ extern	int	tcp_ttl;
 # endif
 #endif
 
-int	ipl_inited = 0;
 # if defined (__OpenBSD__)
 int	ipl_unreach = ICMP_UNREACH_FILTER_PROHIB;
 # else
@@ -226,20 +226,8 @@ int count;
 }
 # endif
 
-#if defined( __OpenBSD__)
-/*
- * Since iplattach() is called by main() at boot time, we put in a 
- * fake stub so that none of the machinery is initialized till explicitly
- * enabled via ipf -E. Therefore we rename the real iplattach() to 
- * ipl_enable(). See also skeleton iplinit() later in this file. 
- */
-void iplattach __P((int));
-void iplattach(int dummy) {};
 
-int ipl_enable()
-# else
 int iplattach()
-# endif /* OpenBSD */
 {
 	char *defpass;
 	int s;
@@ -248,7 +236,7 @@ int iplattach()
 # endif
 
 	SPL_NET(s);
-	if (ipl_inited || (fr_checkp == fr_check)) {
+	if (fr_running || (fr_checkp == fr_check)) {
 		printf("IP Filter: already initialized\n");
 		SPL_X(s);
 		return EBUSY;
@@ -276,7 +264,6 @@ int iplattach()
 	}
 # endif
 
-	ipl_inited = 1;
 	bzero((char *)frcache, sizeof(frcache));
 	fr_savep = fr_checkp;
 	fr_checkp = fr_check;
@@ -304,6 +291,7 @@ int iplattach()
 	timeout(ipfr_slowtimer, NULL, hz/2);
 # endif
 #endif
+	fr_running = 1;
 	return 0;
 }
 
@@ -312,11 +300,7 @@ int iplattach()
  * Disable the filter by removing the hooks from the IP input/output
  * stream.
  */
-# if defined(__OpenBSD__)
-int ipl_disable()
-# else
 int ipldetach()
-# endif
 {
 	int s, i = FR_INQUE|FR_OUTQUE;
 
@@ -332,7 +316,7 @@ int ipldetach()
 # endif
 #endif
 	SPL_NET(s);
-	if (!ipl_inited)
+	if (!fr_running)
 	{
 		printf("IP Filter: not initialized\n");
 		SPL_X(s);
@@ -341,7 +325,7 @@ int ipldetach()
 
 	fr_checkp = fr_savep;
 	i = frflush(IPL_LOGIPF, i);
-	ipl_inited = 0;
+	fr_running = 0;
 
 # ifdef NETBSD_PF
 	pfil_remove_hook((void *)fr_check, PFIL_IN|PFIL_OUT);
@@ -464,11 +448,15 @@ int mode;
 	SPL_NET(s);
 
 	if (unit == IPL_LOGNAT) {
+		if (!fr_running)
+			return EIO;
 		error = nat_ioctl(data, cmd, mode);
 		SPL_X(s);
 		return error;
 	}
 	if (unit == IPL_LOGSTATE) {
+		if (!fr_running)
+			return EIO;
 		error = fr_state_ioctl(data, cmd, mode);
 		SPL_X(s);
 		return error;
@@ -489,23 +477,10 @@ int mode;
 			error = EPERM;
 		else {
 			IRCOPY(data, (caddr_t)&enable, sizeof(enable));
-			if (enable) {
-# if defined(__OpenBSD__)
-				error = ipl_enable();
-# else
+			if (enable)
 				error = iplattach();
-# endif
-				if (error == 0)
-					fr_running = 1;
-			} else {
-# if defined(__OpenBSD__)
-				error = ipl_disable();
-# else
+			else
 				error = ipldetach();
-# endif
-				if (error == 0)
-					fr_running = 0;
-			}
 		}
 		break;
 	}
@@ -762,13 +737,15 @@ caddr_t data;
 	}
 
 	if (!f) {
-		if (req != SIOCINAFR || req != SIOCINIFR)
+		if (req != SIOCINAFR && req != SIOCINIFR)
 			while ((f = *ftail))
 				ftail = &f->fr_next;
 		else {
-			if (fp->fr_hits)
+			if (fp->fr_hits) {
+				ftail = fprev;
 				while (--fp->fr_hits && (f = *ftail))
 					ftail = &f->fr_next;
+			}
 			f = NULL;
 		}
 	}
@@ -1004,8 +981,8 @@ ip_t *ip;
 #  if _BSDI_VERSION >= 199802
 	return ip_output(m, (struct mbuf *)0, &ro, 0, 0, NULL);
 #  else
-#   if defined(__OpenBSD__)
-       return ip_output(m, (struct mbuf *)0, 0, 0, 0, NULL);
+#   if	defined(__OpenBSD__)
+	return ip_output(m, (struct mbuf *)0, 0, 0, 0, NULL);
 #   else
 	return ip_output(m, (struct mbuf *)0, 0, 0, 0);
 #   endif
@@ -1091,13 +1068,8 @@ void
 #  endif
 iplinit()
 {
-#  if defined(__OpenBSD__)
-	/* must explicitly enable with 'ipf -E'
-	 * which invokes ipl_enable(); */
-#  else
 	if (iplattach() != 0)
 		printf("IP Filter failed to attach\n");
-#  endif
 	ip_init();
 }
 # endif /* ! __NetBSD__ */
diff --git a/sys/netinet/ip_fil.h b/sys/netinet/ip_fil.h
index 96bc712f0d0..45f16bd5c04 100644
--- a/sys/netinet/ip_fil.h
+++ b/sys/netinet/ip_fil.h
@@ -1,4 +1,5 @@
-/* $OpenBSD: ip_fil.h,v 1.14 1999/12/28 08:20:40 kjell Exp $ */
+/*	$OpenBSD: ip_fil.h,v 1.15 2000/02/01 19:29:58 kjell Exp $	*/
+
 /*
  * Copyright (C) 1993-1998 by Darren Reed.
  *
@@ -7,7 +8,7 @@
  * to the original author and the contributors.
  *
  * @(#)ip_fil.h	1.35 6/5/96
- * $Id: ip_fil.h,v 1.14 1999/12/28 08:20:40 kjell Exp $
+ * $IPFilter: ip_fil.h,v 2.3.2.7 2000/01/27 08:49:41 darrenr Exp $
  */
 
 #ifndef	__IP_FIL_H__
@@ -272,6 +273,7 @@ typedef	struct	filterstats {
 	u_long	fr_pass;	/* packets allowed */
 	u_long	fr_block;	/* packets denied */
 	u_long	fr_nom;		/* packets which don't match any rule */
+	u_long	fr_short;	/* packets which are short */
 	u_long	fr_ppkl;	/* packets allowed and logged */
 	u_long	fr_bpkl;	/* packets denied and logged */
 	u_long	fr_npkl;	/* packets unmatched and logged */
@@ -448,15 +450,7 @@ extern	int	iplclose __P((dev_t, int));
 # if defined(__NetBSD__) && defined(PFIL_HOOKS)
 extern	void	ipfilterattach __P((int));
 # endif
-
-#if !defined(__OpenBSD__)
-/*
- * OpenBSD has this call in the kernel but doesn't export it to userland.
- * See ip_fil.c for actual hook and more details.
- */
 extern	int	iplattach __P((void));
-#endif
-
 extern	int	ipl_enable __P((void));
 extern	int	ipl_disable __P((void));
 extern	void	ipflog_init __P((void));
@@ -563,7 +557,7 @@ extern  void	fr_makefrip __P((int, ip_t *, fr_info_t *));
 extern	int	fr_ifpaddr __P((void *, struct in_addr *));
 extern	char	*memstr __P((char *, char *, int, int));
 extern	int	ipl_unreach;
-extern	int	ipl_inited;
+extern	int	fr_running;
 extern	u_long	ipl_frouteok[2];
 extern	int	fr_pass;
 extern	int	fr_flags;
diff --git a/sys/netinet/ip_fil_compat.h b/sys/netinet/ip_fil_compat.h
index eab1ee7e804..49a53893719 100644
--- a/sys/netinet/ip_fil_compat.h
+++ b/sys/netinet/ip_fil_compat.h
@@ -1,4 +1,5 @@
-/* $OpenBSD: ip_fil_compat.h,v 1.11 1999/12/15 05:20:21 kjell Exp $ */
+/*	$OpenBSD: ip_fil_compat.h,v 1.12 2000/02/01 19:29:58 kjell Exp $	*/
+
 /*
  * Copyright (C) 1993-1998 by Darren Reed.
  *
@@ -7,7 +8,7 @@
  * to the original author and the contributors.
  *
  * @(#)ip_compat.h	1.8 1/14/96
- * $Id: ip_fil_compat.h,v 1.11 1999/12/15 05:20:21 kjell Exp $
+ * $IPFilter: ip_compat.h,v 2.1.2.3 1999/11/18 13:55:26 darrenr Exp $
  */
 
 #ifndef	__IP_COMPAT_H__
diff --git a/sys/netinet/ip_frag.c b/sys/netinet/ip_frag.c
index 1444e14c23d..8c376473ec7 100644
--- a/sys/netinet/ip_frag.c
+++ b/sys/netinet/ip_frag.c
@@ -1,4 +1,5 @@
-/*       $OpenBSD: ip_frag.c,v 1.14 1999/12/15 05:20:22 kjell Exp $       */
+/*	$OpenBSD: ip_frag.c,v 1.15 2000/02/01 19:29:58 kjell Exp $	*/
+
 /*
  * Copyright (C) 1993-1998 by Darren Reed.
  *
@@ -8,7 +9,7 @@
  */
 #if !defined(lint)
 static const char sccsid[] = "@(#)ip_frag.c	1.11 3/24/96 (C) 1993-1995 Darren Reed";
-static const char rcsid[] = "@(#)$Id: ip_frag.c,v 1.14 1999/12/15 05:20:22 kjell Exp $";
+static const char rcsid[] = "@(#)$IPFilter: ip_frag.c,v 2.4.2.4 1999/11/28 04:52:10 darrenr Exp $";
 #endif
 
 #if defined(KERNEL) && !defined(_KERNEL)
diff --git a/sys/netinet/ip_frag.h b/sys/netinet/ip_frag.h
index 647bf54dc29..730abffbd67 100644
--- a/sys/netinet/ip_frag.h
+++ b/sys/netinet/ip_frag.h
@@ -1,4 +1,5 @@
-/* $OpenBSD: ip_frag.h,v 1.9 1999/12/15 05:20:22 kjell Exp $ */
+/*	$OpenBSD: ip_frag.h,v 1.10 2000/02/01 19:29:58 kjell Exp $	*/
+
 /*
  * Copyright (C) 1993-1998 by Darren Reed.
  *
@@ -7,7 +8,7 @@
  * to the original author and the contributors.
  *
  * @(#)ip_frag.h	1.5 3/24/96
- * $Id: ip_frag.h,v 1.9 1999/12/15 05:20:22 kjell Exp $
+ * $IPFilter: ip_frag.h,v 2.2 1999/08/06 06:26:38 darrenr Exp $
  */
 
 #ifndef	__IP_FRAG_H__
diff --git a/sys/netinet/ip_ftp_pxy.c b/sys/netinet/ip_ftp_pxy.c
index 08e5ce5ae3f..bdb1e5e381e 100644
--- a/sys/netinet/ip_ftp_pxy.c
+++ b/sys/netinet/ip_ftp_pxy.c
@@ -1,4 +1,5 @@
-/* $OpenBSD: ip_ftp_pxy.c,v 1.5 1999/12/15 05:20:22 kjell Exp $ */
+/*	$OpenBSD: ip_ftp_pxy.c,v 1.6 2000/02/01 19:29:58 kjell Exp $	*/
+
 /*
  * Simple FTP transparent proxy for in-kernel use.  For use with the NAT
  * code.
diff --git a/sys/netinet/ip_log.c b/sys/netinet/ip_log.c
index 87c9de1c4a1..d458053c0a0 100644
--- a/sys/netinet/ip_log.c
+++ b/sys/netinet/ip_log.c
@@ -1,4 +1,5 @@
-/* $OpenBSD: ip_log.c,v 1.5 1999/12/15 05:20:22 kjell Exp $ */
+/*	$OpenBSD: ip_log.c,v 1.6 2000/02/01 19:29:58 kjell Exp $	*/
+
 /*
  * Copyright (C) 1997-1998 by Darren Reed.
  *
@@ -6,7 +7,7 @@
  * provided that this notice is preserved and due credit is given
  * to the original author and the contributors.
  *
- * $Id: ip_log.c,v 1.5 1999/12/15 05:20:22 kjell Exp $
+ * $IPFilter: ip_log.c,v 2.1.2.2 1999/09/21 11:55:44 darrenr Exp $
  */
 #include <sys/param.h>
 #if defined(KERNEL) && !defined(_KERNEL)
diff --git a/sys/netinet/ip_nat.c b/sys/netinet/ip_nat.c
index ffd708579ba..34f9d120ff8 100644
--- a/sys/netinet/ip_nat.c
+++ b/sys/netinet/ip_nat.c
@@ -1,4 +1,5 @@
-/* $OpenBSD: ip_nat.c,v 1.25 1999/12/17 07:50:05 kjell Exp $ */
+/*	$OpenBSD: ip_nat.c,v 1.26 2000/02/01 19:29:58 kjell Exp $	*/
+
 /*
  * Copyright (C) 1995-1998 by Darren Reed.
  *
@@ -10,7 +11,7 @@
  */
 #if !defined(lint)
 static const char sccsid[] = "@(#)ip_nat.c	1.11 6/5/96 (C) 1995 Darren Reed";
-static const char rcsid[] = "@(#)$Id: ip_nat.c,v 1.25 1999/12/17 07:50:05 kjell Exp $";
+static const char rcsid[] = "@(#)$IPFilter: ip_nat.c,v 2.2.2.12 2000/01/24 12:43:40 darrenr Exp $";
 #endif
 
 #if defined(__FreeBSD__) && defined(KERNEL) && !defined(_KERNEL)
@@ -744,12 +745,22 @@ int direction;
 			port = 0;
 			in.s_addr = np->in_nip;
 			if (l == 0) {
+				/*
+				 * Check to see if there is an existing NAT
+				 * setup for this IP address pair.
+				 */
 				natl = nat_maplookup(fin->fin_ifp, flags,
 						     ip->ip_src, ip->ip_dst);
 				if (natl != NULL) {
 					in = natl->nat_outip;
+					if ((in.s_addr & np->in_outmsk) !=
+					    np->in_outip)
+						in.s_addr = 0;
+					else
 #ifndef sparc
-					in.s_addr = ntohl(in.s_addr);
+						in.s_addr = ntohl(in.s_addr);
+#else
+						;
 #endif
 				}
 			}
@@ -1784,6 +1795,7 @@ u_int type;
 	natl.nl_origport = nat->nat_oport;
 	natl.nl_inport = nat->nat_inport;
 	natl.nl_outport = nat->nat_outport;
+	natl.nl_p = nat->nat_p;
 	natl.nl_type = type;
 	natl.nl_rule = -1;
 #ifndef LARGE_NAT
diff --git a/sys/netinet/ip_nat.h b/sys/netinet/ip_nat.h
index 60f4533c844..1e87fba23fe 100644
--- a/sys/netinet/ip_nat.h
+++ b/sys/netinet/ip_nat.h
@@ -1,4 +1,5 @@
-/* $OpenBSD: ip_nat.h,v 1.13 1999/12/15 05:20:22 kjell Exp $ */
+/*	$OpenBSD: ip_nat.h,v 1.14 2000/02/01 19:29:58 kjell Exp $	*/
+
 /*
  * Copyright (C) 1995-1998 by Darren Reed.
  *
@@ -7,7 +8,7 @@
  * to the original author and the contributors.
  *
  * @(#)ip_nat.h	1.5 2/4/96
- * $Id: ip_nat.h,v 1.13 1999/12/15 05:20:22 kjell Exp $
+ * $IPFilter: ip_nat.h,v 2.1.2.3 2000/01/24 12:44:24 darrenr Exp $
  */
 
 #ifndef	__IP_NAT_H__
@@ -187,6 +188,7 @@ typedef	struct	natlog {
 	int	nl_rule;
 	U_QUAD_T	nl_pkts;
 	U_QUAD_T	nl_bytes;
+	u_char	nl_p;
 } natlog_t;
 
 
diff --git a/sys/netinet/ip_proxy.c b/sys/netinet/ip_proxy.c
index 0cf9c2d265c..49adee8d3e5 100644
--- a/sys/netinet/ip_proxy.c
+++ b/sys/netinet/ip_proxy.c
@@ -1,4 +1,5 @@
-/* $OpenBSD: ip_proxy.c,v 1.5 1999/12/15 05:20:22 kjell Exp $ */
+/*	$OpenBSD: ip_proxy.c,v 1.6 2000/02/01 19:29:59 kjell Exp $	*/
+
 /*
  * Copyright (C) 1997-1998 by Darren Reed.
  *
@@ -7,7 +8,7 @@
  * to the original author and the contributors.
  */
 #if !defined(lint)
-static const char rcsid[] = "@(#)$Id: ip_proxy.c,v 1.5 1999/12/15 05:20:22 kjell Exp $";
+static const char rcsid[] = "@(#)$IPFilter: ip_proxy.c,v 2.2.2.1 1999/09/19 12:18:19 darrenr Exp $";
 #endif
 
 #if defined(__FreeBSD__) && defined(KERNEL) && !defined(_KERNEL)
diff --git a/sys/netinet/ip_proxy.h b/sys/netinet/ip_proxy.h
index bcc464b1779..330d84a1cb3 100644
--- a/sys/netinet/ip_proxy.h
+++ b/sys/netinet/ip_proxy.h
@@ -1,4 +1,5 @@
-/* $OpenBSD: ip_proxy.h,v 1.4 1999/12/15 05:20:23 kjell Exp $ */
+/*	$OpenBSD: ip_proxy.h,v 1.5 2000/02/01 19:29:59 kjell Exp $	*/
+
 /*
  * Copyright (C) 1997-1998 by Darren Reed.
  *
@@ -6,7 +7,7 @@
  * provided that this notice is preserved and due credit is given
  * to the original author and the contributors.
  *
- * $Id: ip_proxy.h,v 1.4 1999/12/15 05:20:23 kjell Exp $
+ * $IPFilter: ip_proxy.h,v 2.1.2.1 1999/09/19 12:18:20 darrenr Exp $
  */
 
 #ifndef	__IP_PROXY_H__
diff --git a/sys/netinet/ip_raudio_pxy.c b/sys/netinet/ip_raudio_pxy.c
index 7d9ab5b3291..0c84298e392 100644
--- a/sys/netinet/ip_raudio_pxy.c
+++ b/sys/netinet/ip_raudio_pxy.c
@@ -1,4 +1,5 @@
-/* $OpenBSD: ip_raudio_pxy.c,v 1.3 1999/12/28 08:20:40 kjell Exp $ */
+/*	$OpenBSD: ip_raudio_pxy.c,v 1.4 2000/02/01 19:29:59 kjell Exp $	*/
+
 #if SOLARIS && defined(_KERNEL)
 extern	kmutex_t	ipf_rw;
 #endif
diff --git a/sys/netinet/ip_rcmd_pxy.c b/sys/netinet/ip_rcmd_pxy.c
index 5782e9f3400..7f9cd27b53b 100644
--- a/sys/netinet/ip_rcmd_pxy.c
+++ b/sys/netinet/ip_rcmd_pxy.c
@@ -1,4 +1,5 @@
-/* $OpenBSD: ip_rcmd_pxy.c,v 1.1 1999/12/14 04:17:17 kjell Exp $ */
+/*	$OpenBSD: ip_rcmd_pxy.c,v 1.2 2000/02/01 19:29:59 kjell Exp $	*/
+
 /*
  * Simple RCMD transparent proxy for in-kernel use.  For use with the NAT
  * code.
diff --git a/sys/netinet/ip_state.c b/sys/netinet/ip_state.c
index 2233e604a76..d307114c092 100644
--- a/sys/netinet/ip_state.c
+++ b/sys/netinet/ip_state.c
@@ -1,4 +1,5 @@
-/* $OpenBSD: ip_state.c,v 1.17 1999/12/28 09:43:33 kjell Exp $ */
+/*	$OpenBSD: ip_state.c,v 1.18 2000/02/01 19:29:59 kjell Exp $	*/
+
 /*
  * Copyright (C) 1995-1998 by Darren Reed.
  *
@@ -8,7 +9,7 @@
  */
 #if !defined(lint)
 static const char sccsid[] = "@(#)ip_state.c	1.8 6/5/96 (C) 1993-1995 Darren Reed";
-static const char rcsid[] = "@(#)$Id: ip_state.c,v 1.17 1999/12/28 09:43:33 kjell Exp $";
+static const char rcsid[] = "@(#)$IPFilter: ip_state.c,v 2.3.2.18 2000/01/27 08:51:30 darrenr Exp $";
 #endif
 
 #include <sys/errno.h>
@@ -175,11 +176,10 @@ int which;
 				delete = 1;
 				break;
 			case 1 :
-				if ((is->is_p == IPPROTO_TCP) &&
-				    (((is->is_state[0] <= TCPS_ESTABLISHED) &&
-				      (is->is_state[1] > TCPS_ESTABLISHED)) ||
-				     ((is->is_state[1] <= TCPS_ESTABLISHED) &&
-				      (is->is_state[0] > TCPS_ESTABLISHED))))
+				if (is->is_p != IPPROTO_TCP)
+					break;
+				if ((is->is_state[0] != TCPS_ESTABLISHED) ||
+				    (is->is_state[1] != TCPS_ESTABLISHED))
 					delete = 1;
 				break;
 			}
@@ -458,7 +458,7 @@ tcphdr_t *tcp;
 	win = ntohs(tcp->th_win);
 	end = seq + ip->ip_len - fin->fin_hlen - (tcp->th_off << 2) +
 	       ((tcp->th_flags & TH_SYN) ? 1 : 0) +
-	       ((tcp->th_flags & TH_FIN) ? 1 : 0);      
+	       ((tcp->th_flags & TH_FIN) ? 1 : 0);
 
 	if (fdata->td_end == 0) {
 		/*
@@ -472,6 +472,8 @@ tcphdr_t *tcp;
 	if (!(tcp->th_flags & TH_ACK)) {  /* Pretend an ack was sent */
 		ack = tdata->td_end;
 		win = 1;
+		if ((tcp->th_flags == TH_SYN) && (tdata->td_maxwin == 0))
+			 tdata->td_maxwin = 1;
 	} else if (((tcp->th_flags & (TH_ACK|TH_RST)) == (TH_ACK|TH_RST)) &&
 		   (ack == 0)) {
 		/* gross hack to get around certain broken tcp stacks */
@@ -487,7 +489,7 @@ tcphdr_t *tcp;
 #define	SEQ_GE(a,b)	((int)((a) - (b)) >= 0)
 #define	SEQ_GT(a,b)	((int)((a) - (b)) > 0)
 	if ((SEQ_GE(fdata->td_maxend, end)) &&
-	    (SEQ_GE(seq + maxwin, fdata->td_end - maxwin)) && 
+	    (SEQ_GE(seq, fdata->td_end - maxwin)) &&
 /* XXX what about big packets */
 #define MAXACKWINDOW 66000
 	    (ackskew >= -MAXACKWINDOW) &&
@@ -672,8 +674,8 @@ fr_info_t *fin;
 	int type;
 	u_int hv;
 
-	/* 
-	 * Does it at least have the return (basic) IP header ? 
+	/*
+	 * Does it at least have the return (basic) IP header ?
 	 * Only a basic IP header (no options) should be with
 	 * an ICMP error header.
 	 */
@@ -707,10 +709,10 @@ fr_info_t *fin;
 		 if ((icmp->icmp_type != ICMP_ECHO) &&
 		     (icmp->icmp_type != ICMP_TSTAMP) &&
 		     (icmp->icmp_type != ICMP_IREQ) &&
-		     (icmp->icmp_type != ICMP_MASKREQ))  
+		     (icmp->icmp_type != ICMP_MASKREQ))
 		    	return NULL;
 
-		/* 
+		/*
 		 * perform a lookup of the ICMP packet in the state table
 		 */
 
@@ -734,9 +736,9 @@ fr_info_t *fin;
 		for (isp = &ips_table[hv]; (is = *isp); isp = &is->is_next)
 			if ((is->is_p == pr) &&
 			    fr_matchsrcdst(is, src, dst, &ofin, NULL)) {
-			    	/* 
+			    	/*
 			    	 * in the state table ICMP query's are stored
-			    	 * with the type of the corresponding ICMP 
+			    	 * with the type of the corresponding ICMP
 			    	 * response. Correct here
 			    	 */
 				if (((is->is_type == ICMP_ECHOREPLY) &&
@@ -746,7 +748,7 @@ fr_info_t *fin;
 				    (is->is_type - 1 == ic->icmp_type)) {
 				    	ips_stats.iss_hits++;
     		                        is->is_pkts++;
-                	                is->is_bytes += ip->ip_len;     
+                	                is->is_bytes += ip->ip_len;
 					fr = is->is_rule;
 					RWLOCK_EXIT(&ipf_state);
 					return fr;
@@ -804,7 +806,7 @@ fr_info_t *fin;
 			 * comes the other way around
 			 */
 			is->is_pkts++;
-			is->is_bytes += ip->ip_len;     
+			is->is_bytes += ip->ip_len;
 			/*
 			 * we deliberately do not touch the timeouts
 			 * for the accompanying state table entry.
@@ -1040,11 +1042,11 @@ void fr_timeoutstate()
 			} else
 				isp = &is->is_next;
 	RWLOCK_EXIT(&ipf_state);
+	SPL_X(s);
 	if (fr_state_doflush) {
 		(void) fr_state_flush(1);
 		fr_state_doflush = 0;
 	}
-	SPL_X(s);
 }
 
 
@@ -1181,3 +1183,21 @@ u_int type;
 	(void) ipllog(IPL_LOGSTATE, NULL, items, sizes, types, 1);
 }
 #endif
+
+
+void ip_statesync(ifp)
+void *ifp;
+{
+	register ipstate_t *is;
+	register int i;
+
+	WRITE_ENTER(&ipf_state);
+	for (i = fr_statesize - 1; i >= 0; i--)
+		for (is = ips_table[i]; is != NULL; is = is->is_next) {
+			if (is->is_ifpin == ifp)
+				is->is_ifpin = NULL;
+			if (is->is_ifpout == ifp)
+				is->is_ifpout = NULL;
+		}
+	RWLOCK_EXIT(&ipf_state);
+}
diff --git a/sys/netinet/ip_state.h b/sys/netinet/ip_state.h
index 8752f068b98..7033b9344ab 100644
--- a/sys/netinet/ip_state.h
+++ b/sys/netinet/ip_state.h
@@ -1,4 +1,5 @@
-/* $OpenBSD: ip_state.h,v 1.10 1999/12/15 05:20:23 kjell Exp $ */
+/*	$OpenBSD: ip_state.h,v 1.11 2000/02/01 19:29:59 kjell Exp $	*/
+
 /*
  * Copyright (C) 1995-1998 by Darren Reed.
  *
@@ -7,7 +8,7 @@
  * to the original author and the contributors.
  *
  * @(#)ip_state.h	1.3 1/12/96 (C) 1995 Darren Reed
- * $Id: ip_state.h,v 1.10 1999/12/15 05:20:23 kjell Exp $
+ * $IPFilter: ip_state.h,v 2.1.2.2 2000/01/24 13:13:52 darrenr Exp $
  */
 #ifndef	__IP_STATE_H__
 #define	__IP_STATE_H__
@@ -152,6 +153,7 @@ extern	int	fr_stateinit __P((void));
 extern	int	fr_tcpstate __P((ipstate_t *, fr_info_t *, ip_t *, tcphdr_t *));
 extern	ipstate_t	*fr_addstate __P((ip_t *, fr_info_t *, u_int));
 extern	frentry_t	*fr_checkstate __P((ip_t *, fr_info_t *));
+extern	void	ip_statesync __P((void *));
 extern	void	fr_timeoutstate __P((void));
 extern	void	fr_tcp_age __P((u_long *, u_char *, ip_t *, fr_info_t *, int));
 extern	void	fr_stateunload __P((void));
diff --git a/sys/netinet/ipl.h b/sys/netinet/ipl.h
index 4716411676b..8c19f3df9b4 100644
--- a/sys/netinet/ipl.h
+++ b/sys/netinet/ipl.h
@@ -1,4 +1,5 @@
-/* $OpenBSD: ipl.h,v 1.3 1999/12/28 08:20:40 kjell Exp $ */
+/*	$OpenBSD: ipl.h,v 1.4 2000/02/01 19:29:59 kjell Exp $	*/
+
 /*
  * Copyright (C) 1993-1999 by Darren Reed.
  *
@@ -12,6 +13,6 @@
 #ifndef	__IPL_H__
 #define	__IPL_H__
 
-#define	IPL_VERSION	"IP Filter: v3.3.6"
+#define	IPL_VERSION	"IP Filter: v3.3.8"
 
 #endif