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This commit was generated by cvs2svn to compensate for changes in r23279,

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which included commits to RCS files with non-trunk default branches.
This commit is contained in:
Peter Wemm 1997-03-02 15:40:21 +00:00
commit 87a0d81b21
13 changed files with 1145 additions and 53 deletions
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3
contrib/ipfilter/FWTK/Index Normal file
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@ -0,0 +1,3 @@
README - Readme for ftp-gw.diff and fwtkp
README.ipfilter - README for fwtk_transparent.diff
fwtk_transparent.diff - patches for 2.0beta

20
contrib/ipfilter/FWTK/README.ipfilter Normal file
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@ -0,0 +1,20 @@
there was a patch for fwtk with ip_filter 3.1.5 from James B. Croall
(thanx for his work) which I put onto fwtk 2.0beta.
Now, if you decide to do transparent proxying with ip-filter you
have to put -DUSE_IP_FILTER to COPTS in Makefile.config.
With Solaris 2.x you have to correctly replace the path to your
ip_filter sources. (lib/hnam.c needs ip_nat.h)
I also patched plug-gw to be configured to accept not only one
destination with the parameter "-all-destinations" in netperm-table.
Perhaps this is a security hole...
The patched fwtk worked fine for me with linux (kernel 2.0.28 and ipfadm 2.1)
and Solaris 2.5 (ip_filter 3.1.5).
If you try to enhance the transparent proxy features for other
architectures, see lib/hnam.c (getdsthost).
Michael Kutzner, Michael.Kutzner@paderlinx.de

1025
contrib/ipfilter/FWTK/fwtk_transparent.diff Normal file
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File diff suppressed because it is too large Load Diff

9
contrib/ipfilter/HISTORY
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@ -5,6 +5,15 @@
# Thanks to Craig Bishop of connect.com.au and Sun Microsystems for the
# loan of a machine to work on a Solaris 2.x port of this software.
#
prevent use of return-rst and return-icmp with rules blocking packets going
out, preventing panics in certain situations.
loop forms in frag cache table - Yury Pshenychny <yura@rd.zgik.zaporizhzhe.ua>
should use SPLNET/SPLX around expire routines in NAT/frag/state code.
redeclared malloc in 44arp.c -
3.1.7 8/2/97 - Released
Macros used for ntohs/htons supplied with gcc don't always work very well

4
contrib/ipfilter/Makefile
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@ -5,7 +5,7 @@
# and is not changed in any way. The author accepts no responsibility
# for the use of this software. I hate legaleese, don't you ?
#
# $Id: Makefile,v 2.0.1.4 1997/02/08 06:39:28 darrenr Exp $
# $Id: Makefile,v 2.0.1.5 1997/02/16 06:17:04 darrenr Exp $
#
# where to put things.
#
@ -35,7 +35,7 @@ LOGFAC=-DLOGFAC=LOG_LOCAL0
# results: pass, block and nomatch. This is the sort of "block unless
# explicitly allowed" type #define switch.
#
POLICY=-DNOMATCH=FR_PASS
POLICY=-DIPF_DEFAULT_PASS=FR_PASS
#
MFLAGS="BINDEST=$(BINDEST)" "SBINDEST=$(SBINDEST)" "MANDIR=$(MANDIR)" \
"CC=$(CC)" 'CFLAGS=$(CFLAGS) $(SOLARIS2)' "IPFLKM=$(IPFLKM)" \

70
contrib/ipfilter/fil.c
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@ -7,7 +7,7 @@
*/
#if !defined(lint) && defined(LIBC_SCCS)
static char sccsid[] = "@(#)fil.c 1.36 6/5/96 (C) 1993-1996 Darren Reed";
static char rcsid[] = "$Id: fil.c,v 2.0.1.4 1997/02/04 13:59:41 darrenr Exp $";
static char rcsid[] = "$Id: fil.c,v 2.0.1.7 1997/02/18 10:53:47 darrenr Exp $";
#endif
#include <sys/errno.h>
@ -97,10 +97,19 @@ extern int ipl_unreach, ipllog();
# endif
#endif
#ifndef IPF_LOGGING
#define IPF_LOGGING 0
#endif
#ifdef IPF_DEFAULT_PASS
#define IPF_NOMATCH (IPF_DEFAULT_PASS|FR_NOMATCH)
#else
#define IPF_NOMATCH (FR_NOMATCH)
#endif
struct filterstats frstats[2] = {{0,0,0,0,0},{0,0,0,0,0}};
struct frentry *ipfilter[2][2] = { { NULL, NULL }, { NULL, NULL } },
*ipacct[2][2] = { { NULL, NULL }, { NULL, NULL } };
int fr_flags = 0, fr_active = 0;
int fr_flags = IPF_LOGGING, fr_active = 0;
fr_info_t frcache[2];
@ -573,16 +582,12 @@ int out;
frstats[out].fr_chit++;
pass = fin->fin_fr->fr_flags;
} else {
pass = FR_NOMATCH;
pass = IPF_NOMATCH;
if ((fin->fin_fr = ipfilter[out][fr_active]))
pass = FR_SCANLIST(FR_NOMATCH, ip, fin, m);
pass = FR_SCANLIST(IPF_NOMATCH, ip, fin, m);
bcopy((char *)fin, (char *)fc, FI_CSIZE);
if (pass & FR_NOMATCH) {
if (pass & FR_NOMATCH)
frstats[out].fr_nom++;
#ifdef NOMATCH
pass |= NOMATCH;
#endif
}
}
fr = fin->fin_fr;
@ -651,34 +656,40 @@ int out;
/*
* Should we return an ICMP packet to indicate error
* status passing through the packet filter ?
* WARNING: ICMP error packets AND TCP RST packets should
* ONLY be sent in repsonse to incoming packets. Sending them
* in response to outbound packets can result in a panic on
* some operating systems.
*/
if (!out) {
#ifdef _KERNEL
if (pass & FR_RETICMP) {
if (pass & FR_RETICMP) {
# if SOLARIS
ICMP_ERROR(q, ip, ICMP_UNREACH, fin->fin_icode,
qif, ip->ip_src);
ICMP_ERROR(q, ip, ICMP_UNREACH, fin->fin_icode,
qif, ip->ip_src);
# else
ICMP_ERROR(m, ip, ICMP_UNREACH, fin->fin_icode,
ifp, ip->ip_src);
m = NULL; /* freed by icmp_error() */
ICMP_ERROR(m, ip, ICMP_UNREACH, fin->fin_icode,
ifp, ip->ip_src);
m = *mp = NULL; /* freed by icmp_error() */
# endif
frstats[0].fr_ret++;
} else if ((pass & FR_RETRST) &&
!(fin->fin_fi.fi_fl & FI_SHORT)) {
if (SEND_RESET(ip, qif, q) == 0)
frstats[1].fr_ret++;
}
frstats[0].fr_ret++;
} else if ((pass & FR_RETRST) &&
!(fin->fin_fi.fi_fl & FI_SHORT)) {
if (SEND_RESET(ip, qif, q) == 0)
frstats[1].fr_ret++;
}
#else
if (pass & FR_RETICMP) {
verbose("- ICMP unreachable sent\n");
frstats[0].fr_ret++;
} else if ((pass & FR_RETRST) &&
!(fin->fin_fi.fi_fl & FI_SHORT)) {
verbose("- TCP RST sent\n");
frstats[1].fr_ret++;
}
if (pass & FR_RETICMP) {
verbose("- ICMP unreachable sent\n");
frstats[0].fr_ret++;
} else if ((pass & FR_RETRST) &&
!(fin->fin_fi.fi_fl & FI_SHORT)) {
verbose("- TCP RST sent\n");
frstats[1].fr_ret++;
}
#endif
}
}
#ifdef _KERNEL
# if !SOLARIS
@ -691,7 +702,6 @@ int out;
(fdp->fd_ifp && fdp->fd_ifp != (struct ifnet *)-1)) {
ipfr_fastroute(m, fin, fdp);
m = *mp = NULL;
pass = 0;
}
if (mc)
ipfr_fastroute(mc, fin, &fr->fr_dif);

8
contrib/ipfilter/ip_fil.c
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@ -7,7 +7,7 @@
*/
#if !defined(lint) && defined(LIBC_SCCS)
static char sccsid[] = "@(#)ip_fil.c 2.41 6/5/96 (C) 1993-1995 Darren Reed";
static char rcsid[] = "$Id: ip_fil.c,v 2.0.1.5 1997/01/29 13:41:45 darrenr Exp $";
static char rcsid[] = "$Id: ip_fil.c,v 2.0.1.7 1997/02/19 12:45:02 darrenr Exp $";
#endif
#include <sys/errno.h>
@ -70,7 +70,7 @@ static int iplused = 0;
#endif /* IPFILTER_LOG */
static void frflush();
static int frrequest();
static int (*fr_savep)();
static int (*fr_savep)() = NULL;
#if _BSDI_VERSION >= 199501
# include <sys/device.h>
@ -732,6 +732,9 @@ frdest_t *fdp;
dst = (struct sockaddr_in *)&ro->ro_dst;
dst->sin_family = AF_INET;
dst->sin_addr = fdp->fd_ip.s_addr ? fdp->fd_ip : ip->ip_dst;
#ifdef __bsdi__
dst->sin_len = sizeof(*dst);
#endif
#if (BSD >= 199306) && !defined(__NetBSD__) && !defined(__bsdi__)
# ifdef RTF_CLONING
rtalloc_ign(ro, RTF_CLONING);
@ -780,7 +783,6 @@ frdest_t *fdp;
#if BSD >= 199306
error = (*ifp->if_output)(ifp, m, (struct sockaddr *)dst,
ro->ro_rt);
#else
error = (*ifp->if_output)(ifp, m, (struct sockaddr *)dst);
#endif

3
contrib/ipfilter/ip_frag.c
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@ -7,7 +7,7 @@
*/
#if !defined(lint) && defined(LIBC_SCCS)
static char sccsid[] = "@(#)ip_frag.c 1.11 3/24/96 (C) 1993-1995 Darren Reed";
static char rcsid[] = "$Id: ip_frag.c,v 2.0.1.1 1997/01/09 15:14:43 darrenr Exp $";
static char rcsid[] = "$Id: ip_frag.c,v 2.0.1.2 1997/02/16 06:17:35 darrenr Exp $";
#endif
#if !defined(_KERNEL) && !defined(KERNEL)
@ -127,7 +127,6 @@ int pass;
fr->ipfr_ttl = fr_ipfrttl;
fr->ipfr_pass = pass & ~(FR_LOGFIRST|FR_LOG);
fr->ipfr_off = (ip->ip_off & 0x1fff) + (fin->fin_dlen >> 3);
*fp = fr;
ipfr_stats.ifs_new++;
ipfr_inuse++;
MUTEX_EXIT(&ipf_frag);

21
contrib/ipfilter/ip_nat.c
View File

@ -9,7 +9,7 @@
*/
#if !defined(lint) && defined(LIBC_SCCS)
static char sccsid[] = "@(#)ip_nat.c 1.11 6/5/96 (C) 1995 Darren Reed";
static char rcsid[] = "$Id: ip_nat.c,v 2.0.1.10 1997/02/08 06:38:49 darrenr Exp $";
static char rcsid[] = "$Id: ip_nat.c,v 2.0.1.11 1997/02/16 06:26:47 darrenr Exp $";
#endif
#if !defined(_KERNEL) && !defined(KERNEL)
@ -155,12 +155,13 @@ int cmd, mode;
{
register ipnat_t *nat, *n = NULL, **np = NULL;
ipnat_t natd;
int error = 0, ret;
int error = 0, ret, s;
/*
* For add/delete, look to see if the NAT entry is already present
*/
MUTEX_ENTER(&ipf_nat);
SPLNET(s);
if ((cmd == SIOCADNAT) || (cmd == SIOCRMNAT)) {
IRCOPY(data, (char *)&natd, sizeof(natd));
nat = &natd;
@ -260,6 +261,7 @@ int cmd, mode;
IWCOPY((caddr_t)&ret, data, sizeof(ret));
break;
}
SPLX(s);
MUTEX_EXIT(&ipf_nat);
return error;
}
@ -857,11 +859,13 @@ fr_info_t *fin;
*/
void ip_natunload()
{
MUTEX_ENTER(&ipf_nat);
int s;
MUTEX_ENTER(&ipf_nat);
SPLNET(s);
(void) clear_natlist();
(void) flush_nattable();
SPLX(s)
MUTEX_EXIT(&ipf_nat);
}
@ -873,14 +877,19 @@ void ip_natunload()
void ip_natexpire()
{
register struct nat *nat, **natp;
int s;
MUTEX_ENTER(&ipf_nat);
for (natp = &nat_instances; (nat = *natp); natp = &nat->nat_next) {
if (--nat->nat_age)
SPLNET(s);
for (natp = &nat_instances; (nat = *natp); ) {
if (--nat->nat_age) {
natp = &nat->nat_next;
continue;
}
*natp = nat->nat_next;
nat_delete(nat);
nat_stats.ns_expire++;
}
SPLX(s);
MUTEX_EXIT(&ipf_nat);
}

8
contrib/ipfilter/ip_state.c
View File

@ -7,7 +7,7 @@
*/
#if !defined(lint) && defined(LIBC_SCCS)
static char sccsid[] = "@(#)ip_state.c 1.8 6/5/96 (C) 1993-1995 Darren Reed";
static char rcsid[] = "$Id: ip_state.c,v 2.0.1.2 1997/01/09 15:22:45 darrenr Exp $";
static char rcsid[] = "$Id: ip_state.c,v 2.0.1.3 1997/02/16 06:18:36 darrenr Exp $";
#endif
#if !defined(_KERNEL) && !defined(KERNEL)
@ -411,13 +411,16 @@ void fr_stateunload()
{
register int i;
register ipstate_t *is, **isp;
int s;
MUTEX_ENTER(&ipf_state);
SPLNET(s);
for (i = 0; i < IPSTATE_SIZE; i++)
for (isp = &ips_table[i]; (is = *isp); ) {
*isp = is->is_next;
KFREE(is);
}
SPLX(s);
MUTEX_EXIT(&ipf_state);
}
@ -430,8 +433,10 @@ void fr_timeoutstate()
{
register int i;
register ipstate_t *is, **isp;
int s;
MUTEX_ENTER(&ipf_state);
SPLNET(s);
for (i = 0; i < IPSTATE_SIZE; i++)
for (isp = &ips_table[i]; (is = *isp); )
if (is->is_age && !--is->is_age) {
@ -444,6 +449,7 @@ void fr_timeoutstate()
ips_num--;
} else
isp = &is->is_next;
SPLX(s);
MUTEX_EXIT(&ipf_state);
}

10
contrib/ipfilter/ipnat.c
View File

@ -51,7 +51,7 @@
#if !defined(lint) && defined(LIBC_SCCS)
static char sccsid[] ="@(#)ipnat.c 1.9 6/5/96 (C) 1993 Darren Reed";
static char rcsid[] = "$Id: ipnat.c,v 2.0.1.7 1997/01/30 12:02:32 darrenr Exp $";
static char rcsid[] = "$Id: ipnat.c,v 2.0.1.8 1997/02/16 21:23:40 darrenr Exp $";
#endif
#if SOLARIS
@ -190,7 +190,7 @@ void *ptr;
printf(" udp");
printf("\n");
if (verbose)
printf("\t%x %u %x %u %x %d\n", (u_int)np->in_ifp,
printf("\t%p %u %x %u %x %d\n", (u_int)np->in_ifp,
np->in_space, np->in_flags, np->in_pnext, np,
np->in_use);
} else {
@ -220,7 +220,7 @@ void *ptr;
}
printf("\n");
if (verbose)
printf("\t%x %u %s %d %x\n", (u_int)np->in_ifp,
printf("\t%p %u %s %d %x\n", (u_int)np->in_ifp,
np->in_space, inet_ntoa(np->in_nextip),
np->in_pnext, np->in_flags);
}
@ -264,7 +264,7 @@ int fd, opts;
ns.ns_added, ns.ns_expire);
printf("inuse\t%lu\n", ns.ns_inuse);
if (opts & OPT_VERBOSE)
printf("table %#x list %#x\n",
printf("table %p list %p\n",
(u_int)ns.ns_table, (u_int)ns.ns_list);
}
if (opts & OPT_LIST) {
@ -384,7 +384,7 @@ int *resolved;
struct netent *np;
*resolved = 0;
if (!strcasecmp("any",host))
if (!strcasecmp("any", host))
return 0L;
if (isdigit(*host))
return inet_addr(host);

2
contrib/ipfilter/ipsend/44arp.c
View File

@ -52,7 +52,7 @@ char *addr, *eaddr;
{
int mib[6];
size_t needed;
char *malloc(), *lim, *buf, *next;
char *lim, *buf, *next;
struct rt_msghdr *rtm;
struct sockaddr_inarp *sin;
struct sockaddr_dl *sdl;

15
contrib/ipfilter/parse.c
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@ -33,7 +33,7 @@
#if !defined(lint) && defined(LIBC_SCCS)
static char sccsid[] ="@(#)parse.c 1.44 6/5/96 (C) 1993-1996 Darren Reed";
static char rcsid[] = "$Id: parse.c,v 2.0.1.1 1997/01/09 15:14:44 darrenr Exp $";
static char rcsid[] = "$Id: parse.c,v 2.0.1.2 1997/02/17 13:59:44 darrenr Exp $";
#endif
extern struct ipopt_names ionames[], secclass[];
@ -143,9 +143,18 @@ char *line;
}
cpp++;
if (!strcasecmp("in", *cpp))
if (!strcasecmp("in", *cpp)) {
fil.fr_flags |= FR_INQUE;
else if (!strcasecmp("out", *cpp))
if (fil.fr_flags & FR_RETICMP) {
(void)fprintf(stderr,
"Can only use return-icmp with 'in'\n");
return NULL;
} else if (fil.fr_flags & FR_RETRST) {
(void)fprintf(stderr,
"Can only use return-rst with 'in'\n");
return NULL;
}
} else if (!strcasecmp("out", *cpp))
fil.fr_flags |= FR_OUTQUE;
else {
(void)fprintf(stderr,