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-rw-r--r--sys/netinet/ip_fil.c1069
1 files changed, 699 insertions, 370 deletions
diff --git a/sys/netinet/ip_fil.c b/sys/netinet/ip_fil.c
index 6e90df072bb..f28ce0f7cac 100644
--- a/sys/netinet/ip_fil.c
+++ b/sys/netinet/ip_fil.c
@@ -1,34 +1,82 @@
-/* $OpenBSD: ip_fil.c,v 1.15 1997/12/03 01:25:32 kstailey Exp $ */
+/* $OpenBSD: ip_fil.c,v 1.16 1998/01/26 04:10:39 dgregor Exp $ */
/*
- * (C)opyright 1993,1994,1995 by Darren Reed.
+ * Copyright (C) 1993-1997 by Darren Reed.
*
* Redistribution and use in source and binary forms are permitted
* provided that this notice is preserved and due credit is given
* to the original author and the contributors.
*/
-#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[] = "$DRId: ip_fil.c,v 2.0.1.8 1997/03/20 15:51:56 darrenr Exp $";
+#if !defined(lint)
+static const char sccsid[] = "@(#)ip_fil.c 2.41 6/5/96 (C) 1993-1995 Darren Reed";
+static const char rcsid[] = "@(#)$Id: ip_fil.c,v 1.16 1998/01/26 04:10:39 dgregor Exp $";
#endif
-#include <sys/param.h>
+#ifndef SOLARIS
+#define SOLARIS (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
+#endif
+
+#if defined(KERNEL) && !defined(_KERNEL)
+# define _KERNEL
+#endif
+#ifdef __FreeBSD__
+# if defined(_KERNEL) && !defined(IPFILTER_LKM)
+# include <sys/osreldate.h>
+# else
+# include <osreldate.h>
+# endif
+#endif
+#ifndef _KERNEL
+# include <stdio.h>
+# include <string.h>
+# include <stdlib.h>
+# include <ctype.h>
+#endif
#include <sys/errno.h>
+#include <sys/types.h>
+#include <sys/param.h>
#include <sys/file.h>
-#include <sys/ioctl.h>
-#include <sys/mbuf.h>
+#if __FreeBSD_version >= 220000 && defined(_KERNEL)
+# include <sys/fcntl.h>
+# include <sys/filio.h>
+#else
+# include <sys/ioctl.h>
+#endif
+#include <sys/time.h>
+#ifdef _KERNEL
+# include <sys/systm.h>
+#endif
+#include <sys/uio.h>
+#if !SOLARIS
+# if (NetBSD > 199609) || (OpenBSD > 199603)
+# include <sys/dirent.h>
+# else
+# include <sys/dir.h>
+# endif
+# include <sys/mbuf.h>
+#else
+# include <sys/filio.h>
+#endif
#include <sys/protosw.h>
#include <sys/socket.h>
-#include <sys/syslog.h>
-#include <sys/systm.h>
-#include <sys/uio.h>
#include <net/if.h>
#ifdef sun
-#include <net/af.h>
+# include <net/af.h>
+#endif
+#if __FreeBSD_version >= 300000
+# include <net/if_var.h>
+#endif
+#ifdef __sgi
+#include <sys/debug.h>
+# ifdef IFF_DRVRLOCK /* IRIX6 */
+#include <sys/hashing.h>
+# endif
#endif
#include <net/route.h>
#include <netinet/in.h>
+#if !(defined(__sgi) && !defined(IFF_DRVRLOCK)) /* IRIX < 6 */
#include <netinet/in_var.h>
+#endif
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
@@ -36,60 +84,79 @@ static char rcsid[] = "$DRId: ip_fil.c,v 2.0.1.8 1997/03/20 15:51:56 darrenr
#include <netinet/udp.h>
#include <netinet/tcpip.h>
#include <netinet/ip_icmp.h>
-
+#ifndef _KERNEL
+# include <syslog.h>
+#endif
#include "ip_fil_compat.h"
#include "ip_fil.h"
-#include "ip_frag.h"
+#include "ip_proxy.h"
#include "ip_nat.h"
+#include "ip_frag.h"
#include "ip_state.h"
+#include "ip_auth.h"
#ifndef MIN
#define MIN(a,b) (((a)<(b))?(a):(b))
#endif
+#if !SOLARIS && defined(_KERNEL)
+extern int ip_optcopy __P((struct ip *, struct ip *));
+#endif
+
-extern fr_flags, fr_active;
extern struct protosw inetsw[];
-extern int (*fr_checkp) __P((ip_t *, int, struct ifnet *, int,
- struct mbuf **));
-#if BSD < 199306
-extern int ipfr_slowtimer __P((void));
-static int (*fr_saveslowtimo) __P((void));
-extern int tcp_ttl;
+
+#ifndef _KERNEL
+# include "ipt.h"
+static struct ifnet **ifneta = NULL;
+static int nifs = 0;
#else
-extern void ipfr_slowtimer __P((void));
+# if (BSD < 199306) && !defined(__sgi)
+static int (*fr_saveslowtimo) __P((void));
+# else
static void (*fr_saveslowtimo) __P((void));
+# endif
+# if (BSD < 199306) || defined(__sgi)
+extern int tcp_ttl;
+# endif
#endif
-static void frzerostats __P((caddr_t));
-
int ipl_inited = 0;
+#ifdef __OpenBSD__
int ipl_unreach = ICMP_UNREACH_FILTER_PROHIB;
-int send_reset __P((struct tcpiphdr *));
+#else
+int ipl_unreach = ICMP_UNREACH_FILTER;
+#endif
+u_long ipl_frouteok[2] = {0, 0};
-#ifdef IPFILTER_LOG
-# define LOGSIZE 8192
-int ipllog __P((u_int, ip_t *, register fr_info_t *, struct mbuf *));
-char iplbuf[LOGSIZE];
-caddr_t iplh = iplbuf, iplt = iplbuf;
-static int iplused = 0;
-#endif /* IPFILTER_LOG */
-static int (*fr_savep) __P((ip_t *, int, struct ifnet *, int,
- struct mbuf **));
-static void frflush __P((caddr_t));
-static int frrequest __P((u_long, caddr_t, int));
+static void fixskip __P((frentry_t **, frentry_t *, int));
+static void frzerostats __P((caddr_t));
+static void frsync __P((void));
+#if defined(__NetBSD__) || defined(__OpenBSD__)
+static int frrequest __P((int, u_long, caddr_t, int));
+#else
+static int frrequest __P((int, int, caddr_t, int));
+#endif
+#ifdef _KERNEL
+static int (*fr_savep) __P((ip_t *, int, void *, int, struct mbuf **));
+#else
+int ipllog __P((void));
+void init_ifp __P((void));
+# ifdef __sgi
+static int no_output __P((struct ifnet *, struct mbuf *,
+ struct sockaddr *));
+static int write_output __P((struct ifnet *, struct mbuf *,
+ struct sockaddr *));
+# else
+static int no_output __P((struct ifnet *, struct mbuf *,
+ struct sockaddr *, struct rtentry *));
+static int write_output __P((struct ifnet *, struct mbuf *,
+ struct sockaddr *, struct rtentry *));
+# endif
+#endif
-#if _BSDI_VERSION >= 199501
+#if (_BSDI_VERSION >= 199510) && defined(_KERNEL)
# include <sys/device.h>
# include <sys/conf.h>
-int iplioctl __P((dev_t, int, caddr_t, int, struct proc *));
-int iplopen __P((dev_t, int, int, struct proc *));
-int iplclose __P((dev_t, int, int, struct proc *));
-# ifdef IPFILTER_LOG
-int iplread __P((dev_t, struct uio *, int));
-# else
-# define iplread noread
-# endif
-
struct cfdriver iplcd = {
NULL, "ipl", NULL, NULL, DV_DULL, 0
};
@@ -100,44 +167,48 @@ struct devsw iplsw = {
nostrat, nodump, nopsize, 0,
nostop
};
-#else /* _BSDI_VERSION >= 199501 */
+#endif /* _BSDI_VERSION >= 199510 && _KERNEL */
+#ifdef __OpenBSD__
/* called by main() at boot time */
-void iplattach __P((int));
-
-# ifdef IPFILTER_LOG
-# if BSD >= 199306
-int iplread __P((dev_t, struct uio *, int));
-# else
-int iplread __P((dev_t, struct uio *));
-# endif
-# else
-# define iplread noread
-# endif
-int iplioctl __P((dev_t, int, caddr_t, int));
-int iplopen __P((dev_t, int));
-int iplclose __P((dev_t, int));
-#endif /* _BSDI_VERSION >= 199501 */
-
-int ipl_enable __P((void));
-int ipl_disable __P((void));
-
-#ifdef IPFILTER_LKM
-int iplidentify __P((char *));
+void iplattach __P((int));
+#endif
-int
-iplidentify(s)
- char *s;
+#if defined(__NetBSD__) || defined(__OpenBSD__)
+# include <sys/conf.h>
+# if defined(NETBSD_PF)
+# include <net/pfil.h>
+/*
+ * We provide the fr_checkp name just to minimize changes later.
+ */
+int (*fr_checkp) __P((ip_t *ip, int hlen, void *ifp, int out, mb_t **mp));
+# endif /* NETBSD_PF */
+#endif /* __NetBSD__ */
+
+#ifdef _KERNEL
+# if defined(IPFILTER_LKM) && !defined(__sgi)
+int iplidentify(s)
+char *s;
{
if (strcmp(s, "ipl") == 0)
return 1;
return 0;
}
-#else
-void iplinit __P((void));
-#endif /* IPFILTER_LKM */
+# endif /* IPFILTER_LKM */
+
+
+/*
+ * Try to detect the case when compiling for NetBSD with pseudo-device
+ */
+# if defined(__NetBSD__) && defined(PFIL_HOOKS)
+void
+ipfilterattach(count)
+int count;
+{
+ iplattach();
+}
+# endif
-void ipfr_fastroute __P((struct mbuf *, fr_info_t *, frdest_t *));
/*
* None of the machinery should be initialized until the caller explicitly
@@ -152,55 +223,105 @@ int dummy;
int
ipl_enable()
{
+ char *defpass;
int s;
+# ifdef __sgi
+ int error;
+# endif
- SPLNET(s);
+ SPL_NET(s);
if (ipl_inited || (fr_checkp == fr_check)) {
printf("IP Filter: already initialized\n");
- SPLX(s);
+ SPL_X(s);
return EBUSY;
}
+
+# ifdef NETBSD_PF
+ pfil_add_hook((void *)fr_check, PFIL_IN|PFIL_OUT);
+# endif
+
+# ifdef __sgi
+ error = ipfilter_sgi_attach();
+ if (error) {
+ SPL_X(s);
+ return error;
+ }
+# endif
+
ipl_inited = 1;
- bzero((char *)nat_table, sizeof(nat_t *) * NAT_SIZE * 2);
+ bzero((char *)frcache, sizeof(frcache));
+ bzero((char *)nat_table, sizeof(nat_table));
fr_savep = fr_checkp;
fr_checkp = fr_check;
fr_saveslowtimo = inetsw[0].pr_slowtimo;
inetsw[0].pr_slowtimo = ipfr_slowtimer;
- SPLX(s);
+
+# ifdef IPFILTER_LOG
+ ipflog_init();
+# endif
+ SPL_X(s);
+ if (fr_pass & FR_PASS)
+ defpass = "pass";
+ else if (fr_pass & FR_BLOCK)
+ defpass = "block";
+ else
+ defpass = "no-match -> block";
+
+#ifdef __OpenBSD__ /* don't print this message */
+ printf("IP Filter: initialized. Default = %s all, Logging = %s\n",
+ defpass,
+# ifdef IPFILTER_LOG
+ "enabled");
+# else
+ "disabled");
+# endif
+#endif /* __OpenBSD__ */
return 0;
}
-int
-ipl_disable()
+/*
+ * Disable the filter by removing the hooks from the IP input/output
+ * stream.
+ */
+int ipl_disable()
{
int s, i = FR_INQUE|FR_OUTQUE;
- SPLNET(s);
+ SPL_NET(s);
if (!ipl_inited)
{
printf("IP Filter: not initialized\n");
- SPLX(s);
- return EBUSY;
+ SPL_X(s);
+ return 0;
}
fr_checkp = fr_savep;
inetsw[0].pr_slowtimo = fr_saveslowtimo;
- frflush((caddr_t)&i);
+ frflush(IPL_LOGIPF, &i);
ipl_inited = 0;
+# ifdef NETBSD_PF
+ pfil_remove_hook((void *)fr_check, PFIL_IN|PFIL_OUT);
+# endif
+
+# ifdef __sgi
+ ipfilter_sgi_detach();
+# endif
+
ipfr_unload();
ip_natunload();
fr_stateunload();
+ fr_authunload();
- SPLX(s);
+ SPL_X(s);
return 0;
}
+#endif /* _KERNEL */
-static void
-frzerostats(data)
- caddr_t data;
+static void frzerostats(data)
+caddr_t data;
{
struct friostat fio;
@@ -215,77 +336,59 @@ frzerostats(data)
fio.f_acctout[0] = ipacct[1][0];
fio.f_acctout[1] = ipacct[1][1];
fio.f_active = fr_active;
+ fio.f_froute[0] = ipl_frouteok[0];
+ fio.f_froute[1] = ipl_frouteok[1];
IWCOPY((caddr_t)&fio, data, sizeof(fio));
bzero((char *)frstats, sizeof(*frstats) * 2);
}
-static void
-frflush(data)
- caddr_t data;
-{
- struct frentry *f, **fp;
- int flags = *(int *)data, flushed = 0, set = fr_active;
-
- bzero((char *)frcache, sizeof(frcache[0]) * 2);
-
- if (flags & FR_INACTIVE)
- set = 1 - set;
- if (flags & FR_OUTQUE) {
- for (fp = &ipfilter[1][set]; (f = *fp); ) {
- *fp = f->fr_next;
- KFREE(f);
- flushed++;
- }
- for (fp = &ipacct[1][set]; (f = *fp); ) {
- *fp = f->fr_next;
- KFREE(f);
- flushed++;
- }
- }
- if (flags & FR_INQUE) {
- for (fp = &ipfilter[0][set]; (f = *fp); ) {
- *fp = f->fr_next;
- KFREE(f);
- flushed++;
- }
- for (fp = &ipacct[0][set]; (f = *fp); ) {
- *fp = f->fr_next;
- KFREE(f);
- flushed++;
- }
- }
- *(int *)data = flushed;
-}
-
-
/*
* Filter ioctl interface.
*/
-int
-iplioctl(dev, cmd, data, mode
-#if _BSDI_VERSION >= 199501
- , p)
- struct proc *p;
+#ifdef __sgi
+int IPL_EXTERN(ioctl)(dev_t dev, int cmd, caddr_t data, int mode
+# ifdef _KERNEL
+ , cred_t *cp, int *rp
+# endif
+)
+#else
+int IPL_EXTERN(ioctl)(dev, cmd, data, mode
+#if ((_BSDI_VERSION >= 199510) || (BSD >= 199506) || (NetBSD >= 199511) || \
+ (__FreeBSD_version >= 220000) || defined(__OpenBSD__)) && defined(_KERNEL)
+, p)
+struct proc *p;
+#else
+)
+#endif
+dev_t dev;
+#if defined(__NetBSD__) || defined(__OpenBSD__) || (_BSDI_VERSION >= 199701)
+u_long cmd;
#else
- )
+int cmd;
#endif
- dev_t dev;
- int cmd;
- caddr_t data;
- int mode;
+caddr_t data;
+int mode;
+#endif /* __sgi */
{
- int error = 0, s, unit;
+#if defined(_KERNEL) && !SOLARIS
+ int s;
+#endif
+ int error = 0, unit = 0, tmp;
- unit = minor(dev);
- if (unit != 0)
+#ifdef _KERNEL
+ unit = GET_MINOR(dev);
+ if ((IPL_LOGMAX < unit) || (unit < 0))
return ENXIO;
+#endif
+
+#if defined(__OpenBSD__) && defined(_KERNEL)
if (securelevel > 1) {
switch (cmd) {
-#ifndef IPFILTER_LKM
+# ifndef IPFILTER_LKM
case SIOCFRENB:
-#endif
+# endif
case SIOCSETFF:
case SIOCADAFR:
case SIOCADIFR:
@@ -297,9 +400,9 @@ iplioctl(dev, cmd, data, mode
case SIOCSWAPA:
case SIOCFRZST:
case SIOCIPFFL:
-#ifdef IPFILTER_LOG
+# ifdef IPFILTER_LOG
case SIOCIPFFB:
-#endif
+# endif
case SIOCADNAT:
case SIOCRMNAT:
case SIOCFLNAT:
@@ -307,15 +410,28 @@ iplioctl(dev, cmd, data, mode
return EPERM;
}
}
+#endif
- SPLNET(s);
+ SPL_NET(s);
+
+ if (unit == IPL_LOGNAT) {
+ error = nat_ioctl(data, cmd, mode);
+ SPL_X(s);
+ return error;
+ }
+ if (unit == IPL_LOGSTATE) {
+ error = fr_state_ioctl(data, cmd, mode);
+ SPL_X(s);
+ return error;
+ }
switch (cmd) {
case FIONREAD :
#ifdef IPFILTER_LOG
- *(int *)data = iplused;
+ IWCOPY((caddr_t)&iplused[IPL_LOGIPF], (caddr_t)data,
+ sizeof(iplused[IPL_LOGIPF]));
#endif
break;
-#ifndef IPFILTER_LKM
+#if !defined(IPFILTER_LKM) && defined(_KERNEL)
case SIOCFRENB :
{
u_int enable;
@@ -348,7 +464,7 @@ iplioctl(dev, cmd, data, mode
if (!(mode & FWRITE))
error = EPERM;
else
- error = frrequest(cmd, data, fr_active);
+ error = frrequest(unit, cmd, data, fr_active);
break;
case SIOCINIFR :
case SIOCRMIFR :
@@ -356,7 +472,7 @@ iplioctl(dev, cmd, data, mode
if (!(mode & FWRITE))
error = EPERM;
else
- error = frrequest(cmd, data, 1 - fr_active);
+ error = frrequest(unit, cmd, data, 1 - fr_active);
break;
case SIOCSWAPA :
if (!(mode & FWRITE))
@@ -381,7 +497,10 @@ iplioctl(dev, cmd, data, mode
fio.f_acctin[1] = ipacct[0][1];
fio.f_acctout[0] = ipacct[1][0];
fio.f_acctout[1] = ipacct[1][1];
+ fio.f_auth = ipauth;
fio.f_active = fr_active;
+ fio.f_froute[0] = ipl_frouteok[0];
+ fio.f_froute[1] = ipl_frouteok[1];
IWCOPY((caddr_t)&fio, data, sizeof(fio));
break;
}
@@ -394,72 +513,139 @@ iplioctl(dev, cmd, data, mode
case SIOCIPFFL :
if (!(mode & FWRITE))
error = EPERM;
- else
- frflush(data);
+ else {
+ IRCOPY(data, (caddr_t)&tmp, sizeof(tmp));
+ frflush(unit, &tmp);
+ IWCOPY((caddr_t)&tmp, data, sizeof(tmp));
+ }
break;
#ifdef IPFILTER_LOG
case SIOCIPFFB :
if (!(mode & FWRITE))
error = EPERM;
- else {
- *(int *)data = iplused;
- iplh = iplt = iplbuf;
- iplused = 0;
- }
+ else
+ *(int *)data = ipflog_clear(unit);
break;
#endif /* IPFILTER_LOG */
- case SIOCADNAT :
- case SIOCRMNAT :
- case SIOCGNATS :
- case SIOCGNATL :
- case SIOCFLNAT :
- case SIOCCNATL :
- error = nat_ioctl(data, cmd, mode);
- break;
case SIOCGFRST :
IWCOPY((caddr_t)ipfr_fragstats(), data, sizeof(ipfrstat_t));
break;
- case SIOCGIPST :
- IWCOPY((caddr_t)fr_statetstats(), data, sizeof(ips_stat_t));
+ case SIOCAUTHW :
+ case SIOCAUTHR :
+ if (!(mode & FWRITE)) {
+ error = EPERM;
+ break;
+ }
+ case SIOCATHST :
+ error = fr_auth_ioctl(data, cmd, NULL, NULL);
+ break;
+ case SIOCFRSYN :
+ if (!(mode & FWRITE))
+ error = EPERM;
+ else {
+#if defined(_KERNEL) && defined(__sgi)
+ ipfsync();
+#endif
+ frsync();
+ }
break;
default :
error = EINVAL;
break;
}
- SPLX(s);
+ SPL_X(s);
return error;
}
-static int
-frrequest(req, data, set)
- u_long req;
- caddr_t data;
- int set;
+static void frsync()
+{
+#ifdef _KERNEL
+ struct ifnet *ifp;
+
+# if defined(__OpenBSD__) || (NetBSD >= 199511)
+ for (ifp = ifnet.tqh_first; ifp; ifp = ifp->if_list.tqe_next)
+# else
+ for (ifp = ifnet; ifp; ifp = ifp->if_next)
+# endif
+ ip_natsync(ifp);
+#endif
+}
+
+
+static void fixskip(listp, rp, addremove)
+frentry_t **listp, *rp;
+int addremove;
+{
+ frentry_t *fp;
+ int rules = 0, rn = 0;
+
+ for (fp = *listp; fp && (fp != rp); fp = fp->fr_next, rules++)
+ ;
+
+ if (!fp)
+ return;
+
+ for (fp = *listp; fp && (fp != rp); fp = fp->fr_next, rn++)
+ if (fp->fr_skip && (rn + fp->fr_skip >= rules))
+ fp->fr_skip += addremove;
+}
+
+
+static int frrequest(unit, req, data, set)
+int unit;
+#if defined(__NetBSD__) || defined(__OpenBSD__)
+u_long req;
+#else
+int req;
+#endif
+int set;
+caddr_t data;
{
register frentry_t *fp, *f, **fprev;
register frentry_t **ftail;
frentry_t frd;
frdest_t *fdp;
- int error = 0, in;
+ frgroup_t *fg = NULL;
+ int error = 0, in, group;
fp = &frd;
IRCOPY(data, (caddr_t)fp, sizeof(*fp));
+ /*
+ * Check that the group number does exist and that if a head group
+ * has been specified, doesn't exist.
+ */
+ if (fp->fr_grhead &&
+ fr_findgroup(fp->fr_grhead, fp->fr_flags, unit, set, NULL))
+ return EEXIST;
+ if (fp->fr_group &&
+ !fr_findgroup(fp->fr_group, fp->fr_flags, unit, set, NULL))
+ return ESRCH;
+
in = (fp->fr_flags & FR_INQUE) ? 0 : 1;
- if (fp->fr_flags & FR_ACCOUNT) {
+
+ if (unit == IPL_LOGAUTH)
+ ftail = fprev = &ipauth;
+ else if (fp->fr_flags & FR_ACCOUNT)
ftail = fprev = &ipacct[in][set];
- } else if (fp->fr_flags & (FR_OUTQUE|FR_INQUE))
+ else if (fp->fr_flags & (FR_OUTQUE|FR_INQUE))
ftail = fprev = &ipfilter[in][set];
else
return ESRCH;
+ if ((group = fp->fr_group)) {
+ if (!(fg = fr_findgroup(group, fp->fr_flags, unit, set, NULL)))
+ return ESRCH;
+ ftail = fprev = fg->fg_start;
+ }
+
bzero((char *)frcache, sizeof(frcache[0]) * 2);
if (*fp->fr_ifname) {
fp->fr_ifa = GETUNIT(fp->fr_ifname);
if (!fp->fr_ifa)
- fp->fr_ifa = (struct ifnet *)-1;
+ fp->fr_ifa = (void *)-1;
}
fdp = &fp->fr_dif;
@@ -515,18 +701,39 @@ frrequest(req, data, set)
if (!f)
error = ESRCH;
else {
+ if (f->fr_ref > 1)
+ return EBUSY;
+ if (fg && fg->fg_head)
+ fg->fg_head->fr_ref--;
+ if (unit == IPL_LOGAUTH)
+ return fr_auth_ioctl(data, req, f, ftail);
+ if (f->fr_grhead)
+ fr_delgroup(f->fr_grhead, fp->fr_flags, unit,
+ set);
+ fixskip(fprev, f, -1);
*ftail = f->fr_next;
- (void) KFREE(f);
+ KFREE(f);
}
} else {
if (f)
error = EEXIST;
else {
- if ((f = (struct frentry *)KMALLOC(sizeof(*f)))) {
+ if (unit == IPL_LOGAUTH)
+ return fr_auth_ioctl(data, req, f, ftail);
+ KMALLOC(f, frentry_t *, sizeof(*f));
+ if (f != NULL) {
+ if (fg && fg->fg_head)
+ fg->fg_head->fr_ref++;
bcopy((char *)fp, (char *)f, sizeof(*f));
+ f->fr_ref = 1;
f->fr_hits = 0;
f->fr_next = *ftail;
*ftail = f;
+ if (req == SIOCINIFR || req == SIOCINAFR)
+ fixskip(fprev, f, 1);
+ f->fr_grp = NULL;
+ if ((group = f->fr_grhead))
+ fg = fr_addgroup(group, f, unit, set);
} else
error = ENOMEM;
}
@@ -535,216 +742,130 @@ frrequest(req, data, set)
}
-#if !defined(linux)
+#ifdef _KERNEL
/*
* routines below for saving IP headers to buffer
*/
-int
-iplopen(dev, flags
-#if _BSDI_VERSION >= 199501
- , devtype, p)
- int devtype;
- struct proc *p;
+#ifdef __sgi
+# ifdef _KERNEL
+int IPL_EXTERN(open)(dev_t *pdev, int flags, int devtype, cred_t *cp)
+# else
+int IPL_EXTERN(open)(dev_t dev, int flags)
+# endif
#else
- )
-#endif
- dev_t dev;
- int flags;
+int IPL_EXTERN(open)(dev, flags
+# if ((_BSDI_VERSION >= 199510) || (BSD >= 199506) || (NetBSD >= 199511) || \
+ (__FreeBSD_version >= 220000) || defined(__OpenBSD__)) && defined(_KERNEL)
+, devtype, p)
+int devtype;
+struct proc *p;
+# else
+)
+# endif
+dev_t dev;
+int flags;
+#endif /* __sgi */
{
- u_int min = minor(dev);
+#if defined(__sgi) && defined(_KERNEL)
+ u_int min = geteminor(*pdev);
+#else
+ u_int min = GET_MINOR(dev);
+#endif
- if (min)
+ if (2 < min)
min = ENXIO;
+ else
+ min = 0;
return min;
}
-int
-iplclose(dev, flags
-#if _BSDI_VERSION >= 199501
- , devtype, p)
- int devtype;
- struct proc *p;
+#ifdef __sgi
+int IPL_EXTERN(close)(dev_t dev, int flags, int devtype, cred_t *cp)
#else
- )
-#endif
- dev_t dev;
- int flags;
+int IPL_EXTERN(close)(dev, flags
+# if ((_BSDI_VERSION >= 199510) || (BSD >= 199506) || (NetBSD >= 199511) || \
+ (__FreeBSD_version >= 220000) || defined(__OpenBSD__)) && defined(_KERNEL)
+, devtype, p)
+int devtype;
+struct proc *p;
+# else
+)
+# endif
+dev_t dev;
+int flags;
+#endif /* __sgi */
{
- u_int min = minor(dev);
+ u_int min = GET_MINOR(dev);
- if (min)
+ if (2 < min)
min = ENXIO;
+ else
+ min = 0;
return min;
}
-# ifdef IPFILTER_LOG
/*
* iplread/ipllog
* both of these must operate with at least splnet() lest they be
* called during packet processing and cause an inconsistancy to appear in
* the filter lists.
*/
+#ifdef __sgi
+int IPL_EXTERN(read)(dev_t dev, uio_t *uio, cred_t *crp)
+#else
# if BSD >= 199306
-int
-iplread(dev, uio, ioflag)
- int ioflag;
+int IPL_EXTERN(read)(dev, uio, ioflag)
+int ioflag;
# else
-int
-iplread(dev, uio)
+int IPL_EXTERN(read)(dev, uio)
# endif
- dev_t dev;
- register struct uio *uio;
+dev_t dev;
+register struct uio *uio;
+#endif /* __sgi */
{
- register int ret, s;
- register size_t sz, sx;
- int error;
-
- if (!uio->uio_resid)
- return 0;
- while (!iplused) {
- error = SLEEP(iplbuf, "ipl_sleep");
- if (error)
- return error;
- }
- SPLNET(s);
-
- sx = sz = MIN(uio->uio_resid, iplused);
- if (iplh < iplt)
- sz = MIN(sz, LOGSIZE - (iplt - iplbuf));
- sx -= sz;
-
-# if BSD >= 199306 || defined(__FreeBSD__)
- uio->uio_rw = UIO_READ;
+# ifdef IPFILTER_LOG
+ return ipflog_read(GET_MINOR(dev), uio);
+# else
+ return ENXIO;
# endif
- if (!(ret = UIOMOVE(iplt, sz, UIO_READ, uio))) {
- iplt += sz;
- iplused -= sz;
- if ((iplh < iplt) && (iplt == iplbuf + LOGSIZE))
- iplt = iplbuf;
-
- if (sx && !(ret = UIOMOVE(iplt, sx, UIO_READ, uio))) {
- iplt += sx;
- iplused -= sx;
- if ((iplh < iplt) && (iplt == iplbuf + LOGSIZE))
- iplt = iplbuf;
- }
- if (!iplused) /* minimise wrapping around the end */
- iplh = iplt = iplbuf;
- }
- SPLX(s);
- return ret;
}
-# endif /* IPFILTER_LOG */
-#endif /* linux */
-
-
-#ifdef IPFILTER_LOG
-int
-ipllog(flags, ip, fin, m)
- u_int flags;
- ip_t *ip;
- register fr_info_t *fin;
- struct mbuf *m;
-{
- struct ipl_ci iplci;
- register int len, mlen, hlen;
- struct ifnet *ifp = fin->fin_ifp;
-
- hlen = fin->fin_hlen;
- if (ip->ip_p == IPPROTO_TCP || ip->ip_p == IPPROTO_UDP)
- hlen += MIN(sizeof(tcphdr_t), fin->fin_dlen);
- else if (ip->ip_p == IPPROTO_ICMP) {
- struct icmp *icmp = (struct icmp *)((char *)ip + hlen);
-
- switch (icmp->icmp_type) {
- case ICMP_UNREACH :
- case ICMP_SOURCEQUENCH :
- case ICMP_REDIRECT :
- case ICMP_TIMXCEED :
- case ICMP_PARAMPROB :
- hlen += MIN(sizeof(struct icmp) + 8, fin->fin_dlen);
- break;
- default :
- hlen += MIN(sizeof(struct icmp), fin->fin_dlen);
- break;
- }
- }
- mlen = (flags & FR_LOGBODY) ? MIN(ip->ip_len - hlen, 128) : 0;
- len = hlen + sizeof(iplci) + mlen;
- if (iplused + len > LOGSIZE)
- return 0;
- iplused += len;
-
-# ifdef sun
- uniqtime(&iplci);
-# endif
-# if BSD >= 199306 || defined(__FreeBSD__)
- microtime((struct timeval *)&iplci);
-# endif
- iplci.flags = flags;
- iplci.hlen = (u_char)hlen;
- iplci.plen = (u_char)mlen;
- iplci.rule = fin->fin_rule;
-# if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \
- (defined(OpenBSD) && (OpenBSD >= 199603))
- strncpy(iplci.ifname, ifp->if_xname, IFNAMSIZ);
-# else
- iplci.unit = (u_char)ifp->if_unit;
- if ((iplci.ifname[0] = ifp->if_name[0]))
- if ((iplci.ifname[1] = ifp->if_name[1]))
- if ((iplci.ifname[2] = ifp->if_name[2]))
- iplci.ifname[3] = ifp->if_name[3];
-# endif
- /*
- * Guaranteed to succeed from above
- */
- (void) fr_copytolog((char *)&iplci, sizeof(iplci));
-
- for (len -= sizeof(iplci); m && len > 0; m = m->m_next, len -= hlen) {
- hlen = MIN(len, m->m_len);
- if (fr_copytolog(mtod(m, char *), hlen))
- break;
- }
-
- wakeup(iplbuf);
- return 1;
-}
-#endif /* IPFILTER_LOG */
/*
* send_reset - this could conceivably be a call to tcp_respond(), but that
* requires a large amount of setting up and isn't any more efficient.
*/
-int
-send_reset(ti)
- struct tcpiphdr *ti;
+int send_reset(ti)
+struct tcpiphdr *ti;
{
struct tcpiphdr *tp;
- struct ip *ip;
struct tcphdr *tcp;
struct mbuf *m;
- int tlen = 0;
+ int tlen = 0, err;
+ ip_t *ip;
+# if defined(__FreeBSD_version) && (__FreeBSD_version >= 220000)
+ struct route ro;
+# endif
if (ti->ti_flags & TH_RST)
return -1; /* feedback loop */
-#if BSD < 199306
+# if (BSD < 199306) || defined(__sgi)
m = m_get(M_DONTWAIT, MT_HEADER);
-#else
+# else
m = m_gethdr(M_DONTWAIT, MT_HEADER);
m->m_data += max_linkhdr;
-#endif
+# endif
if (m == NULL)
return -1;
if (ti->ti_flags & TH_SYN)
tlen = 1;
m->m_len = sizeof (struct tcpiphdr);
-#if BSD >= 199306
+# if BSD >= 199306
m->m_pkthdr.len = sizeof (struct tcpiphdr);
m->m_pkthdr.rcvif = (struct ifnet *)0;
-#endif
+# endif
bzero(mtod(m, char *), sizeof(struct tcpiphdr));
ip = mtod(m, struct ip *);
tp = mtod(m, struct tcpiphdr *);
@@ -764,39 +885,60 @@ send_reset(ti)
ip->ip_tos = ((struct ip *)ti)->ip_tos;
ip->ip_p = ((struct ip *)ti)->ip_p;
ip->ip_len = sizeof (struct tcpiphdr);
-#if BSD < 199306
+# if (BSD < 199306) || defined(__sgi)
ip->ip_ttl = tcp_ttl;
-#else
+# else
ip->ip_ttl = ip_defttl;
-#endif
+# endif
+# if defined(__FreeBSD_version) && (__FreeBSD_version >= 220000)
+ bzero((char *)&ro, sizeof(ro));
+ err = ip_output(m, (struct mbuf *)0, &ro, 0, 0);
+ if (ro.ro_rt)
+ RTFREE(ro.ro_rt);
+# else
/*
* extra 0 in case of multicast
*/
- (void) ip_output(m, (struct mbuf *)0, 0, 0, 0);
- return 0;
+ err = ip_output(m, (struct mbuf *)0, 0, 0, 0);
+# endif
+ return err;
}
-#ifndef IPFILTER_LKM
-# if BSD < 199306
+# if !defined(IPFILTER_LKM) && (__FreeBSD_version < 300000) && !defined(__sgi)
+# if (BSD < 199306)
+int iplinit __P((void));
+
int
-# else
+# else
+void iplinit __P((void));
+
void
-# endif
+# endif
iplinit()
{
/* (void) ipl_enable(); must explicitly enable with ipf -E */
ip_init();
}
-#endif
+# endif /* ! __NetBSD__ */
-void
-ipfr_fastroute(m0, fin, fdp)
- struct mbuf *m0;
- fr_info_t *fin;
- frdest_t *fdp;
+size_t mbufchainlen(m0)
+register struct mbuf *m0;
+{
+ register size_t len = 0;
+
+ for (; m0; m0 = m0->m_next)
+ len += m0->m_len;
+ return len;
+}
+
+
+void ipfr_fastroute(m0, fin, fdp)
+struct mbuf *m0;
+fr_info_t *fin;
+frdest_t *fdp;
{
register struct ip *ip, *mhip;
register struct mbuf *m = m0;
@@ -816,16 +958,19 @@ ipfr_fastroute(m0, fin, 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;
-#if (BSD >= 199306) && !defined(__NetBSD__) && !defined(__bsdi__) \
- && !defined(__OpenBSD__)
+# ifdef __bsdi__
+ dst->sin_len = sizeof(*dst);
+# endif
+# if (BSD >= 199306) && !defined(__NetBSD__) && !defined(__bsdi__) && \
+ !defined(__OpenBSD__)
# ifdef RTF_CLONING
rtalloc_ign(ro, RTF_CLONING);
-# else
+# else
rtalloc_ign(ro, RTF_PRCLONING);
-# endif
-#else
+# endif
+# else
rtalloc(ro);
-#endif
+# endif
if (!ifp) {
if (!(fin->fin_fr->fr_flags & FR_FASTROUTE)) {
error = -2;
@@ -855,20 +1000,19 @@ ipfr_fastroute(m0, fin, fdp)
* If small enough for interface, can just send directly.
*/
if (ip->ip_len <= ifp->if_mtu) {
-#ifndef sparc
+# ifndef sparc
ip->ip_id = htons(ip->ip_id);
ip->ip_len = htons(ip->ip_len);
ip->ip_off = htons(ip->ip_off);
-#endif
+# endif
if (!ip->ip_sum)
ip->ip_sum = in_cksum(m, hlen);
-#if BSD >= 199306
+# if BSD >= 199306
error = (*ifp->if_output)(ifp, m, (struct sockaddr *)dst,
ro->ro_rt);
-
-#else
+# else
error = (*ifp->if_output)(ifp, m, (struct sockaddr *)dst);
-#endif
+# endif
goto done;
}
/*
@@ -901,11 +1045,11 @@ ipfr_fastroute(m0, fin, fdp)
error = ENOBUFS;
goto bad;
}
-#if BSD >= 199306
+# if BSD >= 199306
m->m_data += max_linkhdr;
-#else
+# else
m->m_off = MMAXOFF - hlen;
-#endif
+# endif
mhip = mtod(m, struct ip *);
bcopy((char *)ip, (char *)mhip, sizeof(*ip));
if (hlen > sizeof (struct ip)) {
@@ -926,9 +1070,9 @@ ipfr_fastroute(m0, fin, fdp)
error = ENOBUFS; /* ??? */
goto sendorfree;
}
-#ifndef sparc
+# ifndef sparc
mhip->ip_off = htons((u_short)mhip->ip_off);
-#endif
+# endif
mhip->ip_sum = 0;
mhip->ip_sum = in_cksum(m, mhlen);
*mnext = m;
@@ -948,18 +1092,23 @@ sendorfree:
m0 = m->m_act;
m->m_act = 0;
if (error == 0)
-#if BSD >= 199306
+# if BSD >= 199306
error = (*ifp->if_output)(ifp, m,
(struct sockaddr *)dst, ro->ro_rt);
-#else
+# else
error = (*ifp->if_output)(ifp, m,
(struct sockaddr *)dst);
-#endif
+# endif
else
m_freem(m);
}
}
done:
+ if (!error)
+ ipl_frouteok[0]++;
+ else
+ ipl_frouteok[1]++;
+
if (ro->ro_rt) {
RTFREE(ro->ro_rt);
}
@@ -968,3 +1117,183 @@ bad:
m_freem(m);
goto done;
}
+#else /* #ifdef _KERNEL */
+
+
+#ifdef __sgi
+static int no_output __P((struct ifnet *ifp, struct mbuf *m,
+ struct sockaddr *s))
+#else
+static int no_output __P((struct ifnet *ifp, struct mbuf *m,
+ struct sockaddr *s, struct rtentry *rt))
+#endif
+{
+ return 0;
+}
+
+
+# ifdef __STDC__
+#ifdef __sgi
+static int write_output __P((struct ifnet *ifp, struct mbuf *m,
+ struct sockaddr *s))
+#else
+static int write_output __P((struct ifnet *ifp, struct mbuf *m,
+ struct sockaddr *s, struct rtentry *rt))
+#endif
+{
+# if !(defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199606)) || \
+ (defined(OpenBSD) && (OpenBSD >= 199603))
+ ip_t *ip = (ip_t *)m;
+# endif
+# else
+static int write_output(ifp, ip)
+struct ifnet *ifp;
+ip_t *ip;
+{
+# endif
+ FILE *fp;
+ char fname[32];
+
+# if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199606)) || \
+ (defined(OpenBSD) && (OpenBSD >= 199603))
+ sprintf(fname, "/tmp/%s", ifp->if_xname);
+ if ((fp = fopen(fname, "a"))) {
+ fclose(fp);
+ }
+# else
+ sprintf(fname, "/tmp/%s%d", ifp->if_name, ifp->if_unit);
+ if ((fp = fopen(fname, "a"))) {
+ fwrite((char *)ip, ntohs(ip->ip_len), 1, fp);
+ fclose(fp);
+ }
+# endif
+ return 0;
+}
+
+
+struct ifnet *get_unit(name)
+char *name;
+{
+ struct ifnet *ifp, **ifa;
+# if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199606)) || \
+ (defined(OpenBSD) && (OpenBSD >= 199603))
+ for (ifa = ifneta; ifa && (ifp = *ifa); ifa++) {
+ if (!strcmp(name, ifp->if_xname))
+ return ifp;
+ }
+# else
+ char ifname[32], *s;
+
+ for (ifa = ifneta; ifa && (ifp = *ifa); ifa++) {
+ (void) sprintf(ifname, "%s%d", ifp->if_name, ifp->if_unit);
+ if (!strcmp(name, ifname))
+ return ifp;
+ }
+# endif
+
+ if (!ifneta) {
+ ifneta = (struct ifnet **)malloc(sizeof(ifp) * 2);
+ ifneta[1] = NULL;
+ ifneta[0] = (struct ifnet *)calloc(1, sizeof(*ifp));
+ nifs = 1;
+ } else {
+ nifs++;
+ ifneta = (struct ifnet **)realloc(ifneta,
+ (nifs + 1) * sizeof(*ifa));
+ ifneta[nifs] = NULL;
+ ifneta[nifs - 1] = (struct ifnet *)malloc(sizeof(*ifp));
+ }
+ ifp = ifneta[nifs - 1];
+
+# if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199606)) || \
+ (defined(OpenBSD) && (OpenBSD >= 199603))
+ strncpy(ifp->if_xname, name, sizeof(ifp->if_xname));
+# else
+ for (s = name; *s && !isdigit(*s); s++)
+ ;
+ if (*s && isdigit(*s)) {
+ ifp->if_unit = atoi(s);
+ ifp->if_name = (char *)malloc(s - name + 1);
+ strncpy(ifp->if_name, name, s - name);
+ ifp->if_name[s - name] = '\0';
+ } else {
+ ifp->if_name = strdup(name);
+ ifp->if_unit = -1;
+ }
+# endif
+ ifp->if_output = no_output;
+ return ifp;
+}
+
+
+
+void init_ifp()
+{
+ FILE *fp;
+ struct ifnet *ifp, **ifa;
+ char fname[32];
+# if (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199606)) || \
+ (defined(OpenBSD) && (OpenBSD >= 199603))
+ for (ifa = ifneta; ifa && (ifp = *ifa); ifa++) {
+ ifp->if_output = write_output;
+ sprintf(fname, "/tmp/%s", ifp->if_xname);
+ if ((fp = fopen(fname, "w")))
+ fclose(fp);
+ }
+# else
+
+ for (ifa = ifneta; ifa && (ifp = *ifa); ifa++) {
+ ifp->if_output = write_output;
+ sprintf(fname, "/tmp/%s%d", ifp->if_name, ifp->if_unit);
+ if ((fp = fopen(fname, "w")))
+ fclose(fp);
+ }
+# endif
+}
+
+
+void ipfr_fastroute(ip, fin, fdp)
+ip_t *ip;
+fr_info_t *fin;
+frdest_t *fdp;
+{
+ struct ifnet *ifp = fdp->fd_ifp;
+
+ if (!ifp)
+ return; /* no routing table out here */
+
+ ip->ip_len = htons((u_short)ip->ip_len);
+ ip->ip_off = htons((u_short)(ip->ip_off | IP_MF));
+ ip->ip_sum = 0;
+#ifdef __sgi
+ (*ifp->if_output)(ifp, (void *)ip, NULL);
+#else
+ (*ifp->if_output)(ifp, (void *)ip, NULL, 0);
+#endif
+}
+
+
+int ipllog __P((void))
+{
+ verbose("l");
+ return 0;
+}
+
+
+int send_reset(ip, ifp)
+ip_t *ip;
+struct ifnet *ifp;
+{
+ verbose("- TCP RST sent\n");
+ return 0;
+}
+
+
+int icmp_error(ip, ifp)
+ip_t *ip;
+struct ifnet *ifp;
+{
+ verbose("- TCP RST sent\n");
+ return 0;
+}
+#endif /* _KERNEL */
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-14 10:59:17 +0000