Import IP filter 3.4.13

8 files changed, 58 insertions, 48 deletions

diff --git a/sys/netinet/fil.c b/sys/netinet/fil.c
index b85dcf4..e0a5ed5 100644
--- a/sys/netinet/fil.c
+++ b/sys/netinet/fil.c
@@ -7,7 +7,7 @@
  */
 #if !defined(lint)
 static const char sccsid[] = "@(#)fil.c	1.36 6/5/96 (C) 1993-2000 Darren Reed";
-static const char rcsid[] = "@(#)$Id: fil.c,v 2.35.2.26 2000/10/24 11:58:17 darrenr Exp $";
+static const char rcsid[] = "@(#)$Id: fil.c,v 2.35.2.27 2000/10/26 21:20:54 darrenr Exp $";
 #endif
 
 #include <sys/errno.h>
@@ -274,32 +274,35 @@ fr_info_t *fin;
 		int minicmpsz = sizeof(struct icmp);
 		icmphdr_t *icmp;
 
-		if (fin->fin_dlen > 1)
+		if (!off && (fin->fin_dlen > 1)) {
 			fin->fin_data[0] = *(u_short *)tcp;
 
-		if ((!(plen >= hlen + minicmpsz) && !off) ||
-		    (off && off < sizeof(struct icmp))) {
-			fi->fi_fl |= FI_SHORT;
-			if (fin->fin_dlen < 2)
-				break;
-		}
+			icmp = (icmphdr_t *)tcp;
 
-		icmp = (icmphdr_t *)tcp;
+			if (icmp->icmp_type == ICMP_ECHOREPLY ||
+			    icmp->icmp_type == ICMP_ECHO)
+				minicmpsz = ICMP_MINLEN;
 
-		if (!off && (icmp->icmp_type == ICMP_ECHOREPLY ||
-		     icmp->icmp_type == ICMP_ECHO))
-			minicmpsz = ICMP_MINLEN;
+			/*
+			 * type(1) + code(1) + cksum(2) + id(2) seq(2) +
+			 * 3*timestamp(3*4)
+			 */
+			else if (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) */
-		else if (!off && (icmp->icmp_type == ICMP_TSTAMP ||
-		    icmp->icmp_type == ICMP_TSTAMPREPLY))
-			minicmpsz = 20;
+			/*
+			 * type(1) + code(1) + cksum(2) + id(2) seq(2) +
+			 * mask(4)
+			 */
+			else if (icmp->icmp_type == ICMP_MASKREQ ||
+				 icmp->icmp_type == ICMP_MASKREPLY)
+				minicmpsz = 12;
+		}
 
-		/* type(1) + code(1) + cksum(2) + id(2) seq(2) + mask(4) */
-		else if (!off && (icmp->icmp_type == ICMP_MASKREQ ||
-		    icmp->icmp_type == ICMP_MASKREPLY))
-			minicmpsz = 12;
+		if ((!(plen >= hlen + minicmpsz) && !off) ||
+		    (off && off < sizeof(struct icmp)))
+			fi->fi_fl |= FI_SHORT;
 
 		break;
 	}
@@ -1398,7 +1401,7 @@ nodata:
  * SUCH DAMAGE.
  *
  *	@(#)uipc_mbuf.c	8.2 (Berkeley) 1/4/94
- * $Id: fil.c,v 2.35.2.26 2000/10/24 11:58:17 darrenr Exp $
+ * $Id: fil.c,v 2.35.2.27 2000/10/26 21:20:54 darrenr Exp $
  */
 /*
  * Copy data from an mbuf chain starting "off" bytes from the beginning,
diff --git a/sys/netinet/ip_ftp_pxy.c b/sys/netinet/ip_ftp_pxy.c
index ffa7c1b..653bbfe 100644
--- a/sys/netinet/ip_ftp_pxy.c
+++ b/sys/netinet/ip_ftp_pxy.c
@@ -2,7 +2,7 @@
  * Simple FTP transparent proxy for in-kernel use.  For use with the NAT
  * code.
  *
- * $Id: ip_ftp_pxy.c,v 2.7.2.17 2000/10/19 15:40:40 darrenr Exp $
+ * $Id: ip_ftp_pxy.c,v 2.7.2.18 2000/10/27 14:02:10 darrenr Exp $
  */
 #if SOLARIS && defined(_KERNEL)
 extern	kmutex_t	ipf_rw;
@@ -252,6 +252,7 @@ int dlen;
 		tcp2->th_dport = 0; /* XXX - don't specify remote port */
 		fi.fin_data[0] = ntohs(sp);
 		fi.fin_data[1] = 0;
+		fi.fin_dlen = sizeof(*tcp2);
 		fi.fin_dp = (char *)tcp2;
 		swip = ip->ip_src;
 		ip->ip_src = nat->nat_inip;
@@ -467,6 +468,7 @@ int dlen;
 		tcp2->th_sport = 0;		/* XXX - fake it for nat_new */
 		tcp2->th_off = 5;
 		fi.fin_data[0] = a5 << 8 | a6;
+		fi.fin_dlen = sizeof(*tcp2);
 		tcp2->th_dport = htons(fi.fin_data[0]);
 		fi.fin_data[1] = 0;
 		fi.fin_dp = (char *)tcp2;
diff --git a/sys/netinet/ip_nat.c b/sys/netinet/ip_nat.c
index d52f48d..4f6921d 100644
--- a/sys/netinet/ip_nat.c
+++ b/sys/netinet/ip_nat.c
@@ -9,7 +9,7 @@
  */
 #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 2.37.2.25 2000/10/25 10:38:47 darrenr Exp $";
+static const char rcsid[] = "@(#)$Id: ip_nat.c,v 2.37.2.26 2000/10/27 14:06:48 darrenr Exp $";
 #endif
 
 #if defined(__FreeBSD__) && defined(KERNEL) && !defined(_KERNEL)
@@ -118,7 +118,6 @@ u_int	ipf_nattable_sz = NAT_TABLE_SZ;
 u_int	ipf_natrules_sz = NAT_SIZE;
 u_int	ipf_rdrrules_sz = RDR_SIZE;
 u_int	ipf_hostmap_sz = HOSTMAP_SIZE;
-int	nat_wilds = 0;
 u_32_t	nat_masks = 0;
 u_32_t	rdr_masks = 0;
 ipnat_t	**nat_rules = NULL;
@@ -144,7 +143,7 @@ static	void	nat_delnat __P((struct ipnat *));
 static	int	fr_natgetent __P((caddr_t));
 static	int	fr_natgetsz __P((caddr_t));
 static	int	fr_natputent __P((caddr_t));
-static	void	nat_tabmove __P((nat_t *, u_int));
+static	void	nat_tabmove __P((nat_t *));
 static	int	nat_match __P((fr_info_t *, ipnat_t *, ip_t *));
 static	hostmap_t *nat_hostmap __P((ipnat_t *, struct in_addr,
 				    struct in_addr));
@@ -1004,7 +1003,7 @@ struct nat *natd;
 	struct ipnat *ipn;
 
 	if (natd->nat_flags & FI_WILDP)
-		nat_wilds--;
+		nat_stats.ns_wilds--;
 	if (natd->nat_hnext[0])
 		natd->nat_hnext[0]->nat_phnext[0] = natd->nat_phnext[0];
 	*natd->nat_phnext[0] = natd->nat_hnext[0];
@@ -1148,7 +1147,7 @@ int direction;
 	bzero((char *)nat, sizeof(*nat));
 	nat->nat_flags = flags;
 	if (flags & FI_WILDP)
-		nat_wilds++;
+		nat_stats.ns_wilds++;
 	/*
 	 * Search the current table for a match.
 	 */
@@ -1916,7 +1915,7 @@ u_32_t ports;
 		      ((nat->nat_outport == dport) || (nflags & FI_W_SPORT)))))
 			return nat;
 	}
-	if (!nat_wilds || !(flags & IPN_TCPUDP))
+	if (!nat_stats.ns_wilds || !(flags & IPN_TCPUDP))
 		return NULL;
 	RWLOCK_EXIT(&ipf_nat);
 	hv = NAT_HASH_FN(dst, 0, ipf_nattable_sz);
@@ -1935,8 +1934,7 @@ u_32_t ports;
 			continue;
 		if (((nat->nat_oport == sport) || (nflags & FI_W_DPORT)) &&
 		    ((nat->nat_outport == dport) || (nflags & FI_W_SPORT))) {
-			hv = NAT_HASH_FN(dst, dport, ipf_nattable_sz);
-			nat_tabmove(nat, hv);
+			nat_tabmove(nat);
 			break;
 		}
 	}
@@ -1945,11 +1943,11 @@ u_32_t ports;
 }
 
 
-static void nat_tabmove(nat, hv)
+static void nat_tabmove(nat)
 nat_t *nat;
-u_int hv;
 {
 	nat_t **natp;
+	u_int hv;
 
 	/*
 	 * Remove the NAT entry from the old location
@@ -1959,9 +1957,14 @@ u_int hv;
 	*nat->nat_phnext[0] = nat->nat_hnext[0];
 
 	if (nat->nat_hnext[1])
-		nat->nat_hnext[0]->nat_phnext[1] = nat->nat_phnext[1];
+		nat->nat_hnext[1]->nat_phnext[1] = nat->nat_phnext[1];
 	*nat->nat_phnext[1] = nat->nat_hnext[1];
 
+	/*
+	 * Add into the NAT table in the new position
+	 */
+	hv = NAT_HASH_FN(nat->nat_inip.s_addr, nat->nat_inport,
+			 ipf_nattable_sz);
 	natp = &nat_table[0][hv];
 	if (*natp)
 		(*natp)->nat_phnext[0] = &nat->nat_hnext[0];
@@ -1969,9 +1972,8 @@ u_int hv;
 	nat->nat_hnext[0] = *natp;
 	*natp = nat;
 
-	/*
-	 * Add into the NAT table in the new position
-	 */
+	hv = NAT_HASH_FN(nat->nat_outip.s_addr, nat->nat_outport,
+			 ipf_nattable_sz);
 	natp = &nat_table[1][hv];
 	if (*natp)
 		(*natp)->nat_phnext[1] = &nat->nat_hnext[1];
@@ -2018,7 +2020,7 @@ u_32_t ports;
 		      (nat->nat_oport == dport || nflags & FI_W_DPORT))))
 			return nat;
 	}
-	if (!nat_wilds || !(flags & IPN_TCPUDP))
+	if (!nat_stats.ns_wilds || !(flags & IPN_TCPUDP))
 		return NULL;
 	RWLOCK_EXIT(&ipf_nat);
 	hv = NAT_HASH_FN(srcip, 0, ipf_nattable_sz);
@@ -2037,8 +2039,7 @@ u_32_t ports;
 			continue;
 		if (((nat->nat_inport == sport) || (nflags & FI_W_DPORT)) &&
 		    ((nat->nat_oport == dport) || (nflags & FI_W_SPORT))) {
-			hv = NAT_HASH_FN(srcip, sport, ipf_nattable_sz);
-			nat_tabmove(nat, hv);
+			nat_tabmove(nat);
 			break;
 		}
 	}
@@ -2179,7 +2180,7 @@ fr_info_t *fin;
 				nat->nat_outport = sport;
 			nat->nat_flags &= ~(FI_W_DPORT|FI_W_SPORT);
 			nflags = nat->nat_flags;
-			nat_wilds--;
+			nat_stats.ns_wilds--;
 		}
 	} else {
 		RWLOCK_EXIT(&ipf_nat);
@@ -2392,7 +2393,7 @@ fr_info_t *fin;
 				nat->nat_outport = dport;
 			nat->nat_flags &= ~(FI_W_SPORT|FI_W_DPORT);
 			nflags = nat->nat_flags;
-			nat_wilds--;
+			nat_stats.ns_wilds--;
 		}
 	} else {
 		RWLOCK_EXIT(&ipf_nat);
diff --git a/sys/netinet/ip_nat.h b/sys/netinet/ip_nat.h
index c2ff100..8e166df 100644
--- a/sys/netinet/ip_nat.h
+++ b/sys/netinet/ip_nat.h
@@ -6,7 +6,7 @@
  * to the original author and the contributors.
  *
  * @(#)ip_nat.h	1.5 2/4/96
- * $Id: ip_nat.h,v 2.17.2.9 2000/10/19 15:44:04 darrenr Exp $
+ * $Id: ip_nat.h,v 2.17.2.10 2000/10/27 14:06:51 darrenr Exp $
  */
 
 #ifndef	__IP_NAT_H__
@@ -207,6 +207,7 @@ typedef	struct	natstat	{
 	u_int	ns_rultab_sz;
 	u_int	ns_rdrtab_sz;
 	nat_t	*ns_instances;
+	u_int	ns_wilds;
 } natstat_t;
 
 #define	IPN_ANY		0x000
diff --git a/sys/netinet/ip_raudio_pxy.c b/sys/netinet/ip_raudio_pxy.c
index d801410..9ea437c 100644
--- a/sys/netinet/ip_raudio_pxy.c
+++ b/sys/netinet/ip_raudio_pxy.c
@@ -1,5 +1,5 @@
 /*
- * $Id: ip_raudio_pxy.c,v 1.7.2.2 2000/09/03 00:23:12 darrenr Exp $
+ * $Id: ip_raudio_pxy.c,v 1.7.2.3 2000/10/27 22:54:04 darrenr Exp $
  */
 #if SOLARIS && defined(_KERNEL)
 extern	kmutex_t	ipf_rw;
@@ -265,6 +265,7 @@ nat_t *nat;
 	tcp2->th_off = 5;
 	fi.fin_dp = (char *)tcp2;
 	fi.fin_fr = &raudiofr;
+	fi.fin_dlen = sizeof(*tcp2);
 	tcp2->th_win = htons(8192);
 	slen = ip->ip_len;
 	ip->ip_len = fin->fin_hlen + sizeof(*tcp);
diff --git a/sys/netinet/ip_rcmd_pxy.c b/sys/netinet/ip_rcmd_pxy.c
index 1d6264d..e311b16 100644
--- a/sys/netinet/ip_rcmd_pxy.c
+++ b/sys/netinet/ip_rcmd_pxy.c
@@ -1,5 +1,5 @@
 /*
- * $Id: ip_rcmd_pxy.c,v 1.4.2.2 2000/07/15 12:38:30 darrenr Exp $
+ * $Id: ip_rcmd_pxy.c,v 1.4.2.3 2000/10/27 22:54:04 darrenr Exp $
  */
 /*
  * Simple RCMD transparent proxy for in-kernel use.  For use with the NAT
@@ -146,6 +146,7 @@ nat_t *nat;
 		fi.fin_data[0] = ntohs(sp);
 		fi.fin_data[1] = 0;
 		fi.fin_dp = (char *)tcp2;
+		fi.fin_dlen = sizeof(*tcp2);
 		swip = ip->ip_src;
 		ip->ip_src = nat->nat_inip;
 		ipn = nat_new(nat->nat_ptr, ip, &fi, IPN_TCP|FI_W_DPORT,
diff --git a/sys/netinet/ip_state.c b/sys/netinet/ip_state.c
index 4f7460e..7499bfd 100644
--- a/sys/netinet/ip_state.c
+++ b/sys/netinet/ip_state.c
@@ -7,7 +7,7 @@
  */
 #if !defined(lint)
 static const char sccsid[] = "@(#)ip_state.c	1.8 6/5/96 (C) 1993-2000 Darren Reed";
-static const char rcsid[] = "@(#)$Id: ip_state.c,v 2.30.2.22 2000/10/26 10:41:29 darrenr Exp $";
+static const char rcsid[] = "@(#)$Id: ip_state.c,v 2.30.2.23 2000/10/27 14:06:08 darrenr Exp $";
 #endif
 
 #include <sys/errno.h>
@@ -1188,6 +1188,7 @@ u_int hv;
 	 * ...and put the hash in the new one.
 	 */
 	hvm = hv % fr_statesize;
+	is->is_hv = hvm;
 	isp = &ips_table[hvm];
 	if (*isp)
 		(*isp)->is_phnext = &is->is_hnext;
diff --git a/sys/netinet/ipl.h b/sys/netinet/ipl.h
index cfec734..b54d6f9 100644
--- a/sys/netinet/ipl.h
+++ b/sys/netinet/ipl.h
@@ -6,12 +6,12 @@
  * to the original author and the contributors.
  *
  * @(#)ipl.h	1.21 6/5/96
- * $Id: ipl.h,v 2.15.2.13 2000/10/25 11:08:41 darrenr Exp $
+ * $Id: ipl.h,v 2.15.2.14 2000/10/27 22:54:41 darrenr Exp $
  */
 
 #ifndef	__IPL_H__
 #define	__IPL_H__
 
-#define	IPL_VERSION	"IP Filter: v3.4.12"
+#define	IPL_VERSION	"IP Filter: v3.4.13"
 
 #endif