import ipfilter 3.4.8

13 files changed, 226 insertions, 112 deletions

diff --git a/sys/netinet/fil.c b/sys/netinet/fil.c
index 258f76e..623e84e 100644
--- a/sys/netinet/fil.c
+++ b/sys/netinet/fil.c
@@ -7,13 +7,9 @@
  */
 #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 2.35.2.8 2000/05/22 10:26:09 darrenr Exp $";
+static const char rcsid[] = "@(#)$Id: fil.c,v 2.35.2.18 2000/07/19 13:13:40 darrenr Exp $";
 #endif
 
-#if defined(_KERNEL) && defined(__FreeBSD_version) && \
-    (__FreeBSD_version >= 400000) && !defined(KLD_MODULE)
-#include "opt_inet6.h"
-#endif
 #include <sys/errno.h>
 #include <sys/types.h>
 #include <sys/param.h>
@@ -25,6 +21,14 @@ static const char rcsid[] = "@(#)$Id: fil.c,v 2.35.2.8 2000/05/22 10:26:09 darre
 #endif
 #if (defined(KERNEL) || defined(_KERNEL)) && defined(__FreeBSD_version) && \
     (__FreeBSD_version >= 220000)
+# if (__FreeBSD_version >= 400000)
+#  ifndef KLD_MODULE
+#   include "opt_inet6.h"
+#  endif
+#  if (__FreeBSD_version == 400019)
+#   define CSUM_DELAY_DATA
+#  endif
+# endif
 # include <sys/filio.h>
 # include <sys/fcntl.h>
 #else
@@ -115,10 +119,8 @@ extern	kmutex_t	ipf_rw;
 # if SOLARIS
 #  define	FR_NEWAUTH(m, fi, ip, qif)	fr_newauth((mb_t *)m, fi, \
 							   ip, qif)
-#  define	SEND_RESET(ip, qif, if, fin)	send_reset(fin, ip, qif)
 # else /* SOLARIS */
 #  define	FR_NEWAUTH(m, fi, ip, qif)	fr_newauth((mb_t *)m, fi, ip)
-#  define	SEND_RESET(ip, qif, if, fin)	send_reset(fin, ip)
 # endif /* SOLARIS || __sgi */
 #endif /* _KERNEL */
 
@@ -659,8 +661,11 @@ void *m;
 		 * Just log this packet...
 		 */
 		passt = fr->fr_flags;
-		if ((passt & FR_CALLNOW) && fr->fr_func)
-			passt = (*fr->fr_func)(passt, ip, fin);
+#if (BSD >= 199306) && (defined(_KERNEL) || defined(KERNEL))
+		if (securelevel <= 0)
+#endif
+			if ((passt & FR_CALLNOW) && fr->fr_func)
+				passt = (*fr->fr_func)(passt, ip, fin);
 		fin->fin_fr = fr;
 #ifdef  IPFILTER_LOG
 		if ((passt & FR_LOGMASK) == FR_LOG) {
@@ -965,8 +970,11 @@ int out;
 			pass &= ~(FR_LOGFIRST|FR_LOG);
 	}
 
-	if (fr && fr->fr_func && !(pass & FR_CALLNOW))
-		pass = (*fr->fr_func)(pass, ip, fin);
+#if (BSD >= 199306) && (defined(_KERNEL) || defined(KERNEL))
+	if (securelevel <= 0)
+#endif
+		if (fr && fr->fr_func && !(pass & FR_CALLNOW))
+			pass = (*fr->fr_func)(pass, ip, fin);
 
 	/*
 	 * Only count/translate packets which will be passed on, out the
@@ -975,10 +983,10 @@ int out;
 	if (out && (pass & FR_PASS)) {
 #ifdef	USE_INET6
 		if (v == 6)
-			list = ipacct6[0][fr_active];
+			list = ipacct6[1][fr_active];
 		else
 #endif
-			list = ipacct[0][fr_active];
+			list = ipacct[1][fr_active];
 		if ((fin->fin_fr = list) &&
 		    (fr_scanlist(FR_NOMATCH, ip, fin, m) & FR_ACCOUNT)) {
 			ATOMIC_INCL(frstats[1].fr_acct);
@@ -1123,11 +1131,11 @@ logit:
 
 		if (((pass & FR_FASTROUTE) && !out) ||
 		    (fdp->fd_ifp && fdp->fd_ifp != (struct ifnet *)-1)) {
-			if (ipfr_fastroute(qif, ip, m, mp, fin, fdp) == 0)
+			if (ipfr_fastroute(ip, m, mp, fin, fdp) == 0)
 				m = *mp = NULL;
 		}
 		if (mc)
-			ipfr_fastroute(qif, ip, mc, mp, fin, &fr->fr_dif);
+			ipfr_fastroute(ip, mc, mp, fin, &fr->fr_dif);
 	}
 # endif /* !SOLARIS */
 	return (pass & FR_PASS) ? 0 : error;
@@ -1359,7 +1367,7 @@ nodata:
  * SUCH DAMAGE.
  *
  *	@(#)uipc_mbuf.c	8.2 (Berkeley) 1/4/94
- * $Id: fil.c,v 2.35.2.8 2000/05/22 10:26:09 darrenr Exp $
+ * $Id: fil.c,v 2.35.2.18 2000/07/19 13:13:40 darrenr Exp $
  */
 /*
  * Copy data from an mbuf chain starting "off" bytes from the beginning,
@@ -1807,6 +1815,7 @@ void frsync()
 		ip_natsync(ifp);
 		ip_statesync(ifp);
 	}
+	ip_natsync((struct ifnet *)-1);
 # endif
 
 	WRITE_ENTER(&ipf_mutex);
diff --git a/sys/netinet/ip_auth.c b/sys/netinet/ip_auth.c
index 78aff43..9fa24d6 100644
--- a/sys/netinet/ip_auth.c
+++ b/sys/netinet/ip_auth.c
@@ -6,7 +6,7 @@
  * to the original author and the contributors.
  */
 #if !defined(lint)
-static const char rcsid[] = "@(#)$Id: ip_auth.c,v 2.11.2.2 2000/05/22 10:26:11 darrenr Exp $";
+static const char rcsid[] = "@(#)$Id: ip_auth.c,v 2.11.2.3 2000/06/17 06:24:31 darrenr Exp $";
 #endif
 
 #include <sys/errno.h>
@@ -46,7 +46,7 @@ static const char rcsid[] = "@(#)$Id: ip_auth.c,v 2.11.2.2 2000/05/22 10:26:11 d
 # include <sys/stream.h>
 # include <sys/kmem.h>
 #endif
-#if _BSDI_VERSION >= 199802
+#if (_BSDI_VERSION >= 199802) || (__FreeBSD_Version >= 400000)
 # include <sys/queue.h>
 #endif
 #if defined(__NetBSD__) || defined(__OpenBSD__) || defined(bsdi)
diff --git a/sys/netinet/ip_fil.c b/sys/netinet/ip_fil.c
index 9216b3c..fe6af66 100644
--- a/sys/netinet/ip_fil.c
+++ b/sys/netinet/ip_fil.c
@@ -7,7 +7,7 @@
  */
 #if !defined(lint)
 static const char sccsid[] = "@(#)ip_fil.c	2.41 6/5/96 (C) 1993-2000 Darren Reed";
-static const char rcsid[] = "@(#)$Id: ip_fil.c,v 2.42.2.9 2000/05/22 12:48:28 darrenr Exp $";
+static const char rcsid[] = "@(#)$Id: ip_fil.c,v 2.42.2.14 2000/07/18 13:57:55 darrenr Exp $";
 #endif
 
 #ifndef	SOLARIS
@@ -692,6 +692,10 @@ caddr_t data;
 	if (error)
 		return EFAULT;
 	fp->fr_ref = 0;
+#if (BSD >= 199306) && defined(_KERNEL)
+	if ((securelevel > 0) && (fp->fr_func != NULL))
+		return EPERM;
+#endif
 
 	/*
 	 * Check that the group number does exist and that if a head group
@@ -764,7 +768,7 @@ caddr_t data;
 	 * interface pointer in the comparison (fr_next, fr_ifa).
 	 */
 	for (fp->fr_cksum = 0, p = (u_int *)&fp->fr_ip, pp = &fp->fr_cksum;
-	     p != pp; p++)
+	     p < pp; p++)
 		fp->fr_cksum += *p;
 
 	for (; (f = *ftail); ftail = &f->fr_next)
@@ -1088,6 +1092,19 @@ int dst;
 	m = NULL;
 	ifp = fin->fin_ifp;
 	if (fin->fin_v == 4) {
+		if ((oip->ip_p == IPPROTO_ICMP) &&
+		    !(fin->fin_fi.fi_fl & FI_SHORT))
+			switch (ntohs(fin->fin_data[0]) >> 8)
+			{
+			case ICMP_ECHO :
+			case ICMP_TSTAMP :
+			case ICMP_IREQ :
+			case ICMP_MASKREQ :
+				break;
+			default :
+				return 0;
+			}
+
 # if	(BSD < 199306) || defined(__sgi)
 		avail = MLEN;
 		m = m_get(M_DONTWAIT, MT_HEADER);
@@ -1325,10 +1342,9 @@ frdest_t *fdp;
 			ATOMIC_INCL(frstats[1].fr_acct);
 		}
 		fin->fin_fr = NULL;
-		if (!fr || !(fr->fr_flags & FR_RETMASK)) {
+		if (!fr || !(fr->fr_flags & FR_RETMASK))
 			(void) fr_checkstate(ip, fin);
-			(void) ip_natout(ip, fin);
-		}
+		(void) ip_natout(ip, fin);
 	} else
 		ip->ip_sum = 0;
 	/*
@@ -1585,15 +1601,29 @@ int v;
 
 	if (!ifneta) {
 		ifneta = (struct ifnet **)malloc(sizeof(ifp) * 2);
+		if (!ifneta)
+			return NULL;
 		ifneta[1] = NULL;
 		ifneta[0] = (struct ifnet *)calloc(1, sizeof(*ifp));
+		if (!ifneta[0]) {
+			free(ifneta);
+			return NULL;
+		}
 		nifs = 1;
 	} else {
 		nifs++;
 		ifneta = (struct ifnet **)realloc(ifneta,
 						  (nifs + 1) * sizeof(*ifa));
+		if (!ifneta) {
+			nifs = 0;
+			return NULL;
+		}
 		ifneta[nifs] = NULL;
 		ifneta[nifs - 1] = (struct ifnet *)malloc(sizeof(*ifp));
+		if (!ifneta[nifs - 1]) {
+			nifs--;
+			return NULL;
+		}
 	}
 	ifp = ifneta[nifs - 1];
 
diff --git a/sys/netinet/ip_fil.h b/sys/netinet/ip_fil.h
index 14f4861..da109b7 100644
--- a/sys/netinet/ip_fil.h
+++ b/sys/netinet/ip_fil.h
@@ -6,7 +6,7 @@
  * to the original author and the contributors.
  *
  * @(#)ip_fil.h	1.35 6/5/96
- * $Id: ip_fil.h,v 2.29.2.2 2000/05/22 10:26:13 darrenr Exp $
+ * $Id: ip_fil.h,v 2.29.2.3 2000/06/05 13:12:42 darrenr Exp $
  */
 
 #ifndef	__IP_FIL_H__
@@ -519,8 +519,8 @@ extern	int	iplioctl __P((dev_t, int, int *, int, cred_t *, int *));
 extern	int	iplopen __P((dev_t *, int, int, cred_t *));
 extern	int	iplclose __P((dev_t, int, int, cred_t *));
 extern	int	ipfsync __P((void));
-extern	int	ipfr_fastroute __P((qif_t *, ip_t *, mblk_t *, mblk_t **,
-				   fr_info_t *, frdest_t *));
+extern	int	ipfr_fastroute __P((ip_t *, mblk_t *, mblk_t **,
+				    fr_info_t *, frdest_t *));
 extern	void	copyin_mblk __P((mblk_t *, size_t, size_t, char *));
 extern	void	copyout_mblk __P((mblk_t *, size_t, size_t, char *));
 extern	int	fr_qin __P((queue_t *, mblk_t *));
@@ -529,8 +529,6 @@ extern	int	iplread __P((dev_t, struct uio *, cred_t *));
 # else /* SOLARIS */
 extern	int	fr_check __P((ip_t *, int, void *, int, mb_t **));
 extern	int	(*fr_checkp) __P((ip_t *, int, void *, int, mb_t **));
-extern	int	send_reset __P((struct ip *, fr_info_t *));
-extern	int	send_icmp_err __P((ip_t *, int, fr_info_t *, int));
 extern	int	ipfr_fastroute __P((mb_t *, fr_info_t *, frdest_t *));
 extern	size_t	mbufchainlen __P((mb_t *));
 #  ifdef	__sgi
diff --git a/sys/netinet/ip_frag.c b/sys/netinet/ip_frag.c
index 3e0a7f3..5019c60 100644
--- a/sys/netinet/ip_frag.c
+++ b/sys/netinet/ip_frag.c
@@ -7,7 +7,7 @@
  */
 #if !defined(lint)
 static const char sccsid[] = "@(#)ip_frag.c	1.11 3/24/96 (C) 1993-2000 Darren Reed";
-static const char rcsid[] = "@(#)$Id: ip_frag.c,v 2.10.2.3 2000/05/05 15:10:23 darrenr Exp $";
+static const char rcsid[] = "@(#)$Id: ip_frag.c,v 2.10.2.4 2000/06/06 15:49:15 darrenr Exp $";
 #endif
 
 #if defined(KERNEL) && !defined(_KERNEL)
@@ -144,6 +144,9 @@ ipfr_t *table[];
 	ipfr_t	**fp, *fra, frag;
 	u_int	idx;
 
+	if (ipfr_inuse >= IPFT_SIZE)
+		return NULL;
+
 	frag.ipfr_p = ip->ip_p;
 	idx = ip->ip_p;
 	frag.ipfr_id = ip->ip_id;
diff --git a/sys/netinet/ip_ftp_pxy.c b/sys/netinet/ip_ftp_pxy.c
index 691e0ad..5ea94a1 100644
--- a/sys/netinet/ip_ftp_pxy.c
+++ b/sys/netinet/ip_ftp_pxy.c
@@ -2,14 +2,17 @@
  * Simple FTP transparent proxy for in-kernel use.  For use with the NAT
  * code.
  *
- * $Id: ip_ftp_pxy.c,v 2.7.2.7 2000/05/13 14:28:14 darrenr Exp $
+ * $Id: ip_ftp_pxy.c,v 2.7.2.12 2000/07/19 13:06:13 darrenr Exp $
  */
 #if SOLARIS && defined(_KERNEL)
 extern	kmutex_t	ipf_rw;
 #endif
 
 #define	isdigit(x)	((x) >= '0' && (x) <= '9')
-#define	isupper(x)	((unsigned)((x) - 'A') <= 'Z' - 'A')
+#define	isupper(x)	(((unsigned)(x) >= 'A') && ((unsigned)(x) <= 'Z'))
+#define	islower(x)	(((unsigned)(x) >= 'a') && ((unsigned)(x) <= 'z'))
+#define	isalpha(x)	(isupper(x) || islower(x))
+#define	toupper(x)	(isupper(x) ? (x) : (x) - 'a' + 'A')
 
 #define	IPF_FTP_PROXY
 
@@ -35,6 +38,7 @@ u_short ippr_ftp_atoi __P((char **));
 
 static	frentry_t	natfr;
 int	ippr_ftp_pasvonly = 0;
+int	ippr_ftp_insecure = 0;
 
 
 /*
@@ -97,21 +101,12 @@ int dlen;
 #endif
 
 	tcp = (tcphdr_t *)fin->fin_dp;
-	off = f->ftps_seq - ntohl(tcp->th_seq);
-	if (off < 0)
-		return 0;
 	/*
 	 * Check for client sending out PORT message.
 	 */
 	if (dlen < IPF_MINPORTLEN)
 		return 0;
-	/*
-	 * Count the number of bytes in the PORT message is.
-	 */
-	if (off < 0)
-		return 0;
-
-	off += fin->fin_hlen + (tcp->th_off << 2);
+	off = fin->fin_hlen + (tcp->th_off << 2);
 	/*
 	 * Skip the PORT command + space
 	 */
@@ -201,6 +196,10 @@ int dlen;
 		m_adj(m, inc);
 	/* the mbuf chain will be extended if necessary by m_copyback() */
 	m_copyback(m, off, nlen, newbuf);
+# ifdef	M_PKTHDR
+	if (!(m->m_flags & M_PKTHDR))
+		m->m_pkthdr.len += inc;
+# endif
 #endif
 	if (inc != 0) {
 #if SOLARIS || defined(__sgi)
@@ -275,27 +274,39 @@ ftpinfo_t *ftp;
 ip_t *ip;
 int dlen;
 {
-	char *rptr, *wptr;
+	char *rptr, *wptr, cmd[6], c;
 	ftpside_t *f;
-	int inc;
+	int inc, i;
 
 	inc = 0;
 	f = &ftp->ftp_side[0];
 	rptr = f->ftps_rptr;
 	wptr = f->ftps_wptr;
 
-	if ((ftp->ftp_passok == 0) && !strncmp(rptr, "USER ", 5))
+	for (i = 0; (i < 5) && (i < dlen); i++) {
+		c = rptr[i];
+		if (isalpha(c)) {
+			cmd[i] = toupper(c);
+		} else {
+			cmd[i] = c;
+		}
+	}
+	cmd[i] = '\0';
+
+	if ((ftp->ftp_passok == 0) && !strncmp(cmd, "USER ", 5))
 		 ftp->ftp_passok = 1;
-	else if ((ftp->ftp_passok == 2) && !strncmp(rptr, "PASS ", 5))
+	else if ((ftp->ftp_passok == 2) && !strncmp(cmd, "PASS ", 5))
 		 ftp->ftp_passok = 3;
 	else if ((ftp->ftp_passok == 4) && !ippr_ftp_pasvonly &&
-		 !strncmp(rptr, "PORT ", 5)) {
+		 !strncmp(cmd, "PORT ", 5)) {
+		inc = ippr_ftp_port(fin, ip, nat, f, dlen);
+	} else if (ippr_ftp_insecure && !ippr_ftp_pasvonly &&
+		   !strncmp(cmd, "PORT ", 5)) {
 		inc = ippr_ftp_port(fin, ip, nat, f, dlen);
 	}
 
 	while ((*rptr++ != '\n') && (rptr < wptr))
 		;
-	f->ftps_seq += rptr - f->ftps_rptr;
 	f->ftps_rptr = rptr;
 	return inc;
 }
@@ -313,8 +324,8 @@ int dlen;
 	u_short a5, a6, sp, dp;
 	u_int a1, a2, a3, a4;
 	fr_info_t fi;
-	int inc, off;
 	nat_t *ipn;
+	int inc;
 	char *s;
 
 	/*
@@ -325,15 +336,8 @@ int dlen;
 	else if (strncmp(f->ftps_rptr, "227 Entering Passive Mode", 25))
 		return 0;
 
-	/*
-	 * Count the number of bytes in the 227 reply is.
-	 */
 	tcp = (tcphdr_t *)fin->fin_dp;
-	off = f->ftps_seq - ntohl(tcp->th_seq);
-	if (off < 0)
-		return 0;
 
-	off += fin->fin_hlen + (tcp->th_off << 2);
 	/*
 	 * Skip the PORT command + space
 	 */
@@ -417,13 +421,13 @@ int dlen;
 		m1->b_wptr += inc;
 	}
 	/*copyin_mblk(m, off, nlen, newbuf);*/
-#else
+#else /* SOLARIS */
 	m = *((mb_t **)fin->fin_mp);
 	if (inc < 0)
 		m_adj(m, inc);
 	/* the mbuf chain will be extended if necessary by m_copyback() */
 	/*m_copyback(m, off, nlen, newbuf);*/
-#endif
+#endif /* SOLARIS */
 	if (inc != 0) {
 #if SOLARIS || defined(__sgi)
 		register u_32_t	sum1, sum2;
@@ -438,10 +442,10 @@ int dlen;
 		sum2 = (sum2 & 0xffff) + (sum2 >> 16);
 
 		fix_outcksum(&ip->ip_sum, sum2, 0);
-#endif
+#endif /* SOLARIS || defined(__sgi) */
 		ip->ip_len += inc;
 	}
-#endif
+#endif /* 0 */
 
 	/*
 	 * Add skeleton NAT entry for connection which will come back the
@@ -507,10 +511,11 @@ int dlen;
 		 ftp->ftp_passok = 0;
 	else if ((ftp->ftp_passok == 4) && !strncmp(rptr, "227 ", 4)) {
 		inc = ippr_ftp_pasv(fin, ip, nat, f, dlen);
+	} else if (ippr_ftp_insecure && !strncmp(rptr, "227 ", 4)) {
+		inc = ippr_ftp_pasv(fin, ip, nat, f, dlen);
 	}
 	while ((*rptr++ != '\n') && (rptr < wptr))
 		;
-	f->ftps_seq += rptr - f->ftps_rptr;
 	f->ftps_rptr = rptr;
 	return inc;
 }
@@ -548,16 +553,16 @@ size_t len;
 				return 1;
 		} else
 			return 1;
-	} else if (isupper(c)) {
+	} else if (isalpha(c)) {
 		c = *s++;
 		i--;
-		if (isupper(c)) {
+		if (isalpha(c)) {
 			c = *s++;
 			i--;
-			if (isupper(c)) {
+			if (isalpha(c)) {
 				c = *s++;
 				i--;
-				if (isupper(c)) {
+				if (isalpha(c)) {
 					c = *s++;
 					i--;
 					if ((c != ' ') && (c != '\r'))
@@ -586,10 +591,10 @@ nat_t *nat;
 ftpinfo_t *ftp;
 int rv;
 {
-	int mlen, len, off, inc, i;
+	int mlen, len, off, inc, i, sel;
 	char *rptr, *wptr;
+	ftpside_t *f, *t;
 	tcphdr_t *tcp;
-	ftpside_t *f;
 	mb_t *m;
 
 	tcp = (tcphdr_t *)fin->fin_dp;
@@ -606,23 +611,29 @@ int rv;
 #else
 	mlen = mbufchainlen(m) - off;
 #endif
-	if (!mlen)
+	t = &ftp->ftp_side[1 - rv];
+	if (!mlen) {
+		t->ftps_seq = ntohl(tcp->th_ack);
 		return 0;
+	}
 
 	inc = 0;
 	f = &ftp->ftp_side[rv];
 	rptr = f->ftps_rptr;
 	wptr = f->ftps_wptr;
-	if ((wptr == f->ftps_buf) && (f->ftps_seq <= ntohl(tcp->th_seq)))
-		f->ftps_seq = ntohl(tcp->th_seq);
 
+	sel = nat->nat_aps->aps_sel[1 - rv];
+	if (rv)
+		i = nat->nat_aps->aps_ackoff[sel];
+	else
+		i = nat->nat_aps->aps_seqoff[sel];
 	/*
 	 * XXX - Ideally, this packet should get dropped because we now know
 	 * that it is out of order (and there is no real danger in doing so
 	 * apart from causing packets to go through here ordered).
 	 */
-	if (ntohl(tcp->th_seq) != f->ftps_seq + (wptr - rptr)) {
-		return APR_ERR(0);
+	if (ntohl(tcp->th_seq) + i != f->ftps_seq) {
+		return APR_ERR(-1);
 	}
 
 	while (mlen > 0) {
@@ -666,7 +677,6 @@ int rv;
 				} else
 					rptr++;
 			}
-			f->ftps_seq += rptr - f->ftps_rptr;
 			f->ftps_rptr = rptr;
 		}
 
@@ -677,7 +687,6 @@ int rv;
 				i = wptr - rptr;
 				if ((rptr == f->ftps_buf) ||
 				    (wptr - rptr > FTP_BUFSZ / 2)) {
-					f->ftps_seq += i;
 					f->ftps_junk = 1;
 					rptr = wptr = f->ftps_buf;
 				} else {
@@ -691,6 +700,7 @@ int rv;
 		}
 	}
 
+	t->ftps_seq = ntohl(tcp->th_ack);
 	f->ftps_rptr = rptr;
 	f->ftps_wptr = wptr;
 	return inc;
diff --git a/sys/netinet/ip_log.c b/sys/netinet/ip_log.c
index ef1af7f..08073bb 100644
--- a/sys/netinet/ip_log.c
+++ b/sys/netinet/ip_log.c
@@ -5,7 +5,7 @@
  * provided that this notice is preserved and due credit is given
  * to the original author and the contributors.
  *
- * $Id: ip_log.c,v 2.5 2000/03/13 22:10:21 darrenr Exp $
+ * $Id: ip_log.c,v 2.5.2.1 2000/07/19 13:11:47 darrenr Exp $
  */
 #include <sys/param.h>
 #if defined(KERNEL) && !defined(_KERNEL)
@@ -20,7 +20,11 @@
 #   include "opt_ipfilter.h"
 #  endif
 # else
-#  include <osreldate.h>
+#  ifdef KLD_MODULE
+#   include <sys/osreldate.h>
+#  else
+#   include <osreldate.h>
+#  endif
 # endif
 #endif
 #ifdef	IPFILTER_LOG
diff --git a/sys/netinet/ip_nat.c b/sys/netinet/ip_nat.c
index 64f50b6..d25f3f7 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 2.37.2.10 2000/05/19 15:54:44 darrenr Exp $";
+static const char rcsid[] = "@(#)$Id: ip_nat.c,v 2.37.2.16 2000/07/18 13:57:40 darrenr Exp $";
 #endif
 
 #if defined(__FreeBSD__) && defined(KERNEL) && !defined(_KERNEL)
@@ -473,10 +473,14 @@ int mode;
 		n->in_next = NULL;
 		*np = n;
 
-		if (n->in_redir & NAT_REDIRECT)
+		if (n->in_redir & NAT_REDIRECT) {
+			n->in_flags &= ~IPN_NOTDST;
 			nat_addrdr(n);
-		if (n->in_redir & (NAT_MAP|NAT_MAPBLK))
+		}
+		if (n->in_redir & (NAT_MAP|NAT_MAPBLK)) {
+			n->in_flags &= ~IPN_NOTSRC;
 			nat_addnat(n);
+		}
 
 		n->in_use = 0;
 		if (n->in_redir & NAT_MAPBLK)
@@ -1517,6 +1521,8 @@ int dir;
 	ip_t *oip;
 	int flags = 0;
 
+	if ((fin->fin_fi.fi_fl & FI_SHORT) || (ip->ip_off & IP_OFFMASK))
+		return NULL;
 	if ((ip->ip_v != 4) || !(nat = nat_icmplookup(ip, fin, dir)))
 		return NULL;
 	*nflags = IPN_ICMPERR;
@@ -1559,14 +1565,14 @@ int dir;
 		fix_outcksum(&icmp->icmp_cksum, sumd, 0);
 	} else {
 		fix_outcksum(&oip->ip_sum, sumd, 0);
-
+#if !SOLARIS && !defined(__sgi)
 		sumd += (sumd & 0xffff);
 		while (sumd > 0xffff)
 			sumd = (sumd & 0xffff) + (sumd >> 16);
-/*		fix_incksum(&icmp->icmp_cksum, sumd, 0); */
+		fix_incksum(&icmp->icmp_cksum, sumd, 0);
+#endif
 	}
 
-
 	if ((flags & IPN_TCPUDP) != 0) {
 		tcphdr_t *tcp;
 
@@ -1714,19 +1720,28 @@ ip_t *ip;
 	if (np->in_p && ip->ip_p != np->in_p)
 		return 0;
 	if (fin->fin_out) {
-		if (!(np->in_redir && (NAT_MAP|NAT_MAPBLK)))
+		if (!(np->in_redir & (NAT_MAP|NAT_MAPBLK)))
 			return 0;
-		if ((fin->fin_fi.fi_saddr & np->in_inmsk) != np->in_inip)
+		if (((fin->fin_fi.fi_saddr & np->in_inmsk) != np->in_inip)
+		    ^ ((np->in_flags & IPN_NOTSRC) != 0))
 			return 0;
-		if ((fin->fin_fi.fi_daddr & np->in_srcmsk) != np->in_srcip)
+		if (((fin->fin_fi.fi_daddr & np->in_srcmsk) != np->in_srcip)
+		    ^ ((np->in_flags & IPN_NOTDST) != 0))
 			return 0;
 	} else {
-		if (!(np->in_redir && NAT_REDIRECT))
+		if (!(np->in_redir & NAT_REDIRECT))
+			return 0;
+		if (((fin->fin_fi.fi_saddr & np->in_srcmsk) != np->in_srcip)
+		    ^ ((np->in_flags & IPN_NOTSRC) != 0))
+			return 0;
+		if (((fin->fin_fi.fi_daddr & np->in_outmsk) != np->in_outip)
+		    ^ ((np->in_flags & IPN_NOTDST) != 0))
 			return 0;
 	}
 
 	ft = &np->in_tuc;
-	if (!(fin->fin_fi.fi_fl & FI_TCPUDP)) {
+	if (!(fin->fin_fi.fi_fl & FI_TCPUDP) ||
+	    (fin->fin_fi.fi_fl & FI_SHORT) || (ip->ip_off & IP_OFFMASK)) {
 		if (ft->ftu_scmp || ft->ftu_dcmp)
 			return 0;
 		return 1;
@@ -1863,7 +1878,6 @@ maskloop:
 		np = nat->nat_ptr;
 		if (natadd && fin->fin_fi.fi_fl & FI_FRAG)
 			ipfr_nat_newfrag(ip, fin, 0, nat);
-		ip->ip_src = nat->nat_outip;
 		MUTEX_ENTER(&nat->nat_lock);
 		nat->nat_age = fr_defnatage;
 		nat->nat_bytes += ip->ip_len;
@@ -1874,12 +1888,27 @@ maskloop:
 		 * Fix up checksums, not by recalculating them, but
 		 * simply computing adjustments.
 		 */
+		if (nflags == IPN_ICMPERR) {
+			u_32_t s1, s2, sumd;
+
+			s1 = LONG_SUM(ntohl(ip->ip_src.s_addr));
+			s2 = LONG_SUM(ntohl(nat->nat_outip.s_addr));
+			CALC_SUMD(s1, s2, sumd);
+
+			if (nat->nat_dir == NAT_OUTBOUND)
+				fix_incksum(&ip->ip_sum, sumd, 0);
+			else
+				fix_outcksum(&ip->ip_sum, sumd, 0);
+		}
 #if SOLARIS || defined(__sgi)
-		if (nat->nat_dir == NAT_OUTBOUND)
-			fix_outcksum(&ip->ip_sum, nat->nat_ipsumd, 0);
-		else
-			fix_incksum(&ip->ip_sum, nat->nat_ipsumd, 0);
+		else {
+			if (nat->nat_dir == NAT_OUTBOUND)
+				fix_outcksum(&ip->ip_sum, nat->nat_ipsumd, 0);
+			else
+				fix_incksum(&ip->ip_sum, nat->nat_ipsumd, 0);
+		}
 #endif
+		ip->ip_src = nat->nat_outip;
 
 		if (!(ip->ip_off & IP_OFFMASK) &&
 		    !(fin->fin_fi.fi_fl & FI_SHORT)) {
@@ -1917,6 +1946,7 @@ maskloop:
 			} else if (ip->ip_p == IPPROTO_ICMP) {
 				nat->nat_age = fr_defnaticmpage;
 			}
+
 			if (csump) {
 				if (nat->nat_dir == NAT_OUTBOUND)
 					fix_outcksum(csump, nat->nat_sumd[1],
@@ -1986,7 +2016,7 @@ fr_info_t *fin;
 	if ((ip->ip_p == IPPROTO_ICMP) &&
 	    (nat = nat_icmp(ip, fin, &nflags, NAT_INBOUND)))
 		;
-	else if ((ip->ip_off & IP_OFFMASK) &&
+	else if ((ip->ip_off & (IP_OFFMASK|IP_MF)) &&
 		 (nat = ipfr_nat_knownfrag(ip, fin)))
 		natadd = 0;
 	else if ((nat = nat_inlookup(fin->fin_ifp, nflags, (u_int)ip->ip_p,
@@ -2024,7 +2054,7 @@ maskloop:
 			} else if ((in.s_addr & np->in_outmsk) != np->in_outip)
 				continue;
 			if ((np->in_redir & NAT_REDIRECT) &&
-			    (!np->in_pmin ||
+			    (!np->in_pmin || (np->in_flags & IPN_FILTER) ||
 			     ((ntohs(np->in_pmax) >= ntohs(dport)) &&
 			      (ntohs(dport) >= ntohs(np->in_pmin)))))
 				if ((nat = nat_new(np, ip, fin, nflags,
diff --git a/sys/netinet/ip_nat.h b/sys/netinet/ip_nat.h
index f1a339f..26fed25 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 2.17.2.1 2000/05/15 06:50:14 darrenr Exp $
+ * $Id: ip_nat.h,v 2.17.2.6 2000/07/15 14:50:06 darrenr Exp $
  */
 
 #ifndef	__IP_NAT_H__
@@ -103,9 +103,10 @@ typedef	struct	ipnat	{
 	u_int	in_hits;
 	struct	in_addr	in_nextip;
 	u_short	in_pnext;
-	u_short	in_ppip;	/* ports per IP */
 	u_short	in_ippip;	/* IP #'s per IP# */
-	u_short	in_flags;	/* From here to in_dport must be reflected */
+	u_32_t	in_flags;	/* From here to in_dport must be reflected */
+	u_short	in_spare;
+	u_short	in_ppip;	/* ports per IP */
 	u_short	in_port[2];	/* correctly in IPN_CMPSIZ */
 	struct	in_addr	in_in[2];
 	struct	in_addr	in_out[2];
@@ -212,11 +213,13 @@ typedef	struct	natstat	{
 #define	IPN_RF		(IPN_TCPUDP|IPN_DELETE|IPN_ICMPERR)
 #define	IPN_AUTOPORTMAP	0x010
 #define	IPN_IPRANGE	0x020
-#define	IPN_USERFLAGS	(IPN_TCPUDP|IPN_AUTOPORTMAP|IPN_IPRANGE|\
-			 IPN_SPLIT|IPN_ROUNDR|IPN_FILTER)
+#define	IPN_USERFLAGS	(IPN_TCPUDP|IPN_AUTOPORTMAP|IPN_IPRANGE|IPN_SPLIT|\
+			 IPN_ROUNDR|IPN_FILTER|IPN_NOTSRC|IPN_NOTDST)
 #define	IPN_FILTER	0x040
 #define	IPN_SPLIT	0x080
 #define	IPN_ROUNDR	0x100
+#define	IPN_NOTSRC	0x080000
+#define	IPN_NOTDST	0x100000
 
 
 typedef	struct	natlog {
@@ -236,6 +239,8 @@ typedef	struct	natlog {
 
 #define	NL_NEWMAP	NAT_MAP
 #define	NL_NEWRDR	NAT_REDIRECT
+#define	NL_NEWBIMAP	NAT_BIMAP
+#define	NL_NEWBLOCK	NAT_MAPBLK
 #define	NL_EXPIRE	0xffff
 
 #define	NAT_HASH_FN(k,l,m)	(((k) + ((k) >> 12) + l) % (m))
diff --git a/sys/netinet/ip_rcmd_pxy.c b/sys/netinet/ip_rcmd_pxy.c
index daea94f..1d6264d 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 1.4.2.1 2000/05/06 11:19:34 darrenr Exp $
+ * $Id: ip_rcmd_pxy.c,v 1.4.2.2 2000/07/15 12:38:30 darrenr Exp $
  */
 /*
  * Simple RCMD transparent proxy for in-kernel use.  For use with the NAT
@@ -93,8 +93,17 @@ nat_t *nat;
 #endif
 
 	tcp = (tcphdr_t *)fin->fin_dp;
+
+	if (tcp->th_flags & TH_SYN) {
+		*(u_32_t *)aps->aps_data = htonl(ntohl(tcp->th_seq) + 1);
+		return 0;
+	}
+
+	if ((*(u_32_t *)aps->aps_data != 0) &&
+	    (tcp->th_seq != *(u_32_t *)aps->aps_data))
+		return 0;
+
 	off = (ip->ip_hl << 2) + (tcp->th_off << 2);
-	m = *(mb_t **)fin->fin_mp;
 
 #if	SOLARIS
 	m = fin->fin_qfm;
@@ -103,13 +112,11 @@ nat_t *nat;
 	bzero(portbuf, sizeof(portbuf));
 	copyout_mblk(m, off, MIN(sizeof(portbuf), dlen), portbuf);
 #else
+	m = *(mb_t **)fin->fin_mp;
 	dlen = mbufchainlen(m) - off;
 	bzero(portbuf, sizeof(portbuf));
 	m_copydata(m, off, MIN(sizeof(portbuf), dlen), portbuf);
 #endif
-	if ((*(u_32_t *)aps->aps_data != 0) &&
-	    (tcp->th_seq != *(u_32_t *)aps->aps_data))
-		return 0;
 
 	portbuf[sizeof(portbuf) - 1] = '\0';
 	s = portbuf;
diff --git a/sys/netinet/ip_state.c b/sys/netinet/ip_state.c
index c9a28af..fa8e050 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 2.30.2.9 2000/05/22 10:26:15 darrenr Exp $";
+static const char rcsid[] = "@(#)$Id: ip_state.c,v 2.30.2.12 2000/06/19 02:38:37 darrenr Exp $";
 #endif
 
 #include <sys/errno.h>
@@ -381,8 +381,8 @@ caddr_t data;
 {
 	register ipstate_t *is, *isn;
 	ipstate_save_t ips, *ipsp;
+	int error, out;
 	frentry_t *fr;
-	int error;
 
 	error = IRCOPY(data, (caddr_t)&ipsp, sizeof(ipsp));
 	if (error)
@@ -405,8 +405,26 @@ caddr_t data;
 				return ENOMEM;
 			}
 			bcopy((char *)&ips.ips_fr, (char *)fr, sizeof(*fr));
+			out = fr->fr_flags & FR_OUTQUE ? 1 : 0;
 			isn->is_rule = fr;
 			ips.ips_is.is_rule = fr;
+			if (*fr->fr_ifname) {
+				fr->fr_ifa = GETUNIT(fr->fr_ifname, fr->fr_v);
+				if (fr->fr_ifa == NULL)
+					fr->fr_ifa = (void *)-1;
+#ifdef	_KERNEL
+				else {
+					strncpy(isn->is_ifname[out],
+						IFNAME(fr->fr_ifa), IFNAMSIZ);
+					isn->is_ifp[out] = fr->fr_ifa;
+				}
+#endif
+			} else
+				fr->fr_ifa = NULL;
+			/*
+			 * send a copy back to userland of what we ended up
+			 * to allow for verification.
+			 */
 			error = IWCOPY((caddr_t)&ips, ipsp, sizeof(ips));
 			if (error) {
 				KFREE(isn);
@@ -1582,8 +1600,8 @@ fr_info_t *fin;
 				     (oic->icmp6_type == ICMP6_ECHO_REQUEST)) ||
 				     (is->is_type - 1 == oic->icmp6_type )) {
 				    	ips_stats.iss_hits++;
-    		                        is->is_pkts++;
-                	                is->is_bytes += fin->fin_plen;
+    					is->is_pkts++;
+					is->is_bytes += fin->fin_plen;
 					return is->is_rule;
 				}
 			}
diff --git a/sys/netinet/ip_state.h b/sys/netinet/ip_state.h
index 01c26a0..a5643af 100644
--- a/sys/netinet/ip_state.h
+++ b/sys/netinet/ip_state.h
@@ -6,7 +6,7 @@
  * to the original author and the contributors.
  *
  * @(#)ip_state.h	1.3 1/12/96 (C) 1995 Darren Reed
- * $Id: ip_state.h,v 2.13 2000/03/13 22:10:23 darrenr Exp $
+ * $Id: ip_state.h,v 2.13.2.1 2000/07/08 02:15:35 darrenr Exp $
  */
 #ifndef	__IP_STATE_H__
 #define	__IP_STATE_H__
@@ -17,8 +17,8 @@
 # define	SIOCDELST	_IOW(r, 61, struct ipstate *)
 #endif
 
-#define	IPSTATE_SIZE	257
-#define	IPSTATE_MAX	2048	/* Maximum number of states held */
+#define	IPSTATE_SIZE	5737
+#define	IPSTATE_MAX	4013	/* Maximum number of states held */
 
 #define	PAIRS(s1,d1,s2,d2)	((((s1) == (s2)) && ((d1) == (d2))) ||\
 				 (((s1) == (d2)) && ((d1) == (s2))))
diff --git a/sys/netinet/ipl.h b/sys/netinet/ipl.h
index 12d866c..bb2523d 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 2.15.2.5 2000/05/22 10:26:16 darrenr Exp $
+ * $Id: ipl.h,v 2.15.2.9 2000/07/19 13:40:04 darrenr Exp $
  */
 
 #ifndef	__IPL_H__
 #define	__IPL_H__
 
-#define	IPL_VERSION	"IP Filter: v3.4.4"
+#define	IPL_VERSION	"IP Filter: v3.4.8"
 
 #endif