766 lines
14 KiB
C
766 lines
14 KiB
C
/* $NetBSD: ipfs.c,v 1.3 2000/05/11 19:54:35 veego Exp $ */
|
|
|
|
/*
|
|
* Copyright (C) 1999 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.
|
|
*/
|
|
#ifdef __FreeBSD__
|
|
# include <osreldate.h>
|
|
#endif
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <fcntl.h>
|
|
#include <errno.h>
|
|
#if !defined(__SVR4) && !defined(__GNUC__)
|
|
#include <strings.h>
|
|
#endif
|
|
#include <sys/types.h>
|
|
#include <sys/param.h>
|
|
#include <sys/file.h>
|
|
#include <stdlib.h>
|
|
#include <stddef.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/ioctl.h>
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_systm.h>
|
|
#include <sys/time.h>
|
|
#include <net/if.h>
|
|
#if __FreeBSD_version >= 300000
|
|
# include <net/if_var.h>
|
|
#endif
|
|
#include <netinet/ip.h>
|
|
#include <netdb.h>
|
|
#include <arpa/nameser.h>
|
|
#include <resolv.h>
|
|
#include "ip_compat.h"
|
|
#include "ip_fil.h"
|
|
#include "ip_nat.h"
|
|
#include "ip_state.h"
|
|
#include "ipf.h"
|
|
|
|
#if !defined(lint)
|
|
static const char rcsid[] = "@(#)Id: ipfs.c,v 2.6.2.1 2000/05/06 00:11:18 darrenr Exp";
|
|
#endif
|
|
|
|
#ifndef IPF_SAVEDIR
|
|
# define IPF_SAVEDIR "/var/db/ipf"
|
|
#endif
|
|
#if !defined(__SVR4) && defined(__GNUC__)
|
|
extern char *index __P((const char *, int));
|
|
#endif
|
|
|
|
extern char *optarg;
|
|
|
|
int main __P((int, char *[]));
|
|
void usage __P((void));
|
|
int changestateif __P((char *, char *));
|
|
int changenatif __P((char *, char *));
|
|
int readstate __P((int, char *));
|
|
int readnat __P((int, char *));
|
|
int writestate __P((int, char *));
|
|
int opendevice __P((char *));
|
|
void closedevice __P((int));
|
|
int setlock __P((int, int));
|
|
int writeall __P((char *));
|
|
int readall __P((char *));
|
|
int writenat __P((int, char *));
|
|
|
|
int opts = 0;
|
|
|
|
|
|
void usage()
|
|
{
|
|
fprintf(stderr, "usage: ipfs [-nv] -l\n");
|
|
fprintf(stderr, "usage: ipfs [-nv] -u\n");
|
|
fprintf(stderr, "usage: ipfs [-nv] [-d <dir>] -R\n");
|
|
fprintf(stderr, "usage: ipfs [-nv] [-d <dir>] -W\n");
|
|
fprintf(stderr, "usage: ipfs [-nNSv] [-f <file>] -r\n");
|
|
fprintf(stderr, "usage: ipfs [-nNSv] [-f <file>] -w\n");
|
|
fprintf(stderr, "usage: ipfs [-nNSv] -f <filename> -i <if1>,<if2>\n");
|
|
exit(1);
|
|
}
|
|
|
|
|
|
/*
|
|
* Change interface names in state information saved out to disk.
|
|
*/
|
|
int changestateif(ifs, fname)
|
|
char *ifs, *fname;
|
|
{
|
|
int fd, olen, nlen, rw;
|
|
ipstate_save_t ips;
|
|
off_t pos;
|
|
char *s;
|
|
|
|
s = strchr(ifs, ',');
|
|
if (!s)
|
|
usage();
|
|
*s++ = '\0';
|
|
nlen = strlen(s);
|
|
olen = strlen(ifs);
|
|
if (nlen >= sizeof(ips.ips_is.is_ifname) ||
|
|
olen >= sizeof(ips.ips_is.is_ifname))
|
|
usage();
|
|
|
|
fd = open(fname, O_RDWR);
|
|
if (fd == -1) {
|
|
perror("open");
|
|
exit(1);
|
|
}
|
|
|
|
for (pos = 0; read(fd, &ips, sizeof(ips)) == sizeof(ips); ) {
|
|
rw = 0;
|
|
if (!strncmp(ips.ips_is.is_ifname[0], ifs, olen + 1)) {
|
|
strcpy(ips.ips_is.is_ifname[0], s);
|
|
rw = 1;
|
|
}
|
|
if (!strncmp(ips.ips_is.is_ifname[1], ifs, olen + 1)) {
|
|
strcpy(ips.ips_is.is_ifname[1], s);
|
|
rw = 1;
|
|
}
|
|
if (rw == 1) {
|
|
if (lseek(fd, pos, SEEK_SET) != pos) {
|
|
perror("lseek");
|
|
exit(1);
|
|
}
|
|
if (write(fd, &ips, sizeof(ips)) != sizeof(ips)) {
|
|
perror("write");
|
|
exit(1);
|
|
}
|
|
}
|
|
pos = lseek(fd, 0, SEEK_CUR);
|
|
}
|
|
close(fd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* Change interface names in NAT information saved out to disk.
|
|
*/
|
|
int changenatif(ifs, fname)
|
|
char *ifs, *fname;
|
|
{
|
|
int fd, olen, nlen, rw;
|
|
nat_save_t ipn;
|
|
nat_t *nat;
|
|
off_t pos;
|
|
char *s;
|
|
|
|
s = strchr(ifs, ',');
|
|
if (!s)
|
|
usage();
|
|
*s++ = '\0';
|
|
nlen = strlen(s);
|
|
olen = strlen(ifs);
|
|
nat = &ipn.ipn_nat;
|
|
if (nlen >= sizeof(nat->nat_ifname) || olen >= sizeof(nat->nat_ifname))
|
|
usage();
|
|
|
|
fd = open(fname, O_RDWR);
|
|
if (fd == -1) {
|
|
perror("open");
|
|
exit(1);
|
|
}
|
|
|
|
for (pos = 0; read(fd, &ipn, sizeof(ipn)) == sizeof(ipn); ) {
|
|
rw = 0;
|
|
if (!strncmp(nat->nat_ifname, ifs, olen + 1)) {
|
|
strcpy(nat->nat_ifname, s);
|
|
rw = 1;
|
|
}
|
|
if (rw == 1) {
|
|
if (lseek(fd, pos, SEEK_SET) != pos) {
|
|
perror("lseek");
|
|
exit(1);
|
|
}
|
|
if (write(fd, &ipn, sizeof(ipn)) != sizeof(ipn)) {
|
|
perror("write");
|
|
exit(1);
|
|
}
|
|
}
|
|
pos = lseek(fd, 0, SEEK_CUR);
|
|
}
|
|
close(fd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int main(argc,argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
int c, lock = -1, devfd = -1, err = 0, rw = -1, ns = -1, set = 0;
|
|
char *dirname = NULL, *filename = NULL, *ifs = NULL;
|
|
|
|
while ((c = getopt(argc, argv, "d:f:lNnSRruvWw")) != -1)
|
|
switch (c)
|
|
{
|
|
case 'd' :
|
|
if ((set == 0) && !dirname && !filename)
|
|
dirname = optarg;
|
|
else
|
|
usage();
|
|
break;
|
|
case 'f' :
|
|
if ((set == 0) && !dirname && !filename)
|
|
filename = optarg;
|
|
else
|
|
usage();
|
|
break;
|
|
case 'i' :
|
|
ifs = optarg;
|
|
set = 1;
|
|
break;
|
|
case 'l' :
|
|
if (filename || dirname || set)
|
|
usage();
|
|
lock = 1;
|
|
set = 1;
|
|
break;
|
|
case 'n' :
|
|
opts |= OPT_DONOTHING;
|
|
break;
|
|
case 'N' :
|
|
if ((ns > 0) || dirname || (rw != -1) || set)
|
|
usage();
|
|
ns = 0;
|
|
set = 1;
|
|
break;
|
|
case 'r' :
|
|
if ((ns > 0) || dirname || (rw != -1))
|
|
usage();
|
|
rw = 0;
|
|
set = 1;
|
|
break;
|
|
case 'R' :
|
|
rw = 2;
|
|
set = 1;
|
|
break;
|
|
case 'S' :
|
|
if ((ns > 0) || dirname || (rw != -1) || set)
|
|
usage();
|
|
ns = 1;
|
|
set = 1;
|
|
break;
|
|
case 'u' :
|
|
if (filename || dirname || set)
|
|
usage();
|
|
lock = 0;
|
|
set = 1;
|
|
break;
|
|
case 'v' :
|
|
opts |= OPT_VERBOSE;
|
|
break;
|
|
case 'w' :
|
|
if ((ns > 0) || dirname || (rw != -1) || (ns == -1))
|
|
usage();
|
|
rw = 1;
|
|
set = 1;
|
|
break;
|
|
case 'W' :
|
|
rw = 3;
|
|
set = 1;
|
|
break;
|
|
case '?' :
|
|
default :
|
|
usage();
|
|
}
|
|
|
|
if (ifs)
|
|
return changestateif(ifs, filename);
|
|
|
|
if ((ns >= 0) || (lock >= 0)) {
|
|
if (lock >= 0)
|
|
devfd = opendevice(NULL);
|
|
else if (ns >= 0) {
|
|
if (ns == 1)
|
|
devfd = opendevice(IPL_STATE);
|
|
else if (ns == 0)
|
|
devfd = opendevice(IPL_NAT);
|
|
}
|
|
if (devfd == -1)
|
|
exit(1);
|
|
}
|
|
|
|
if (lock >= 0)
|
|
err = setlock(devfd, lock);
|
|
else if (rw >= 0) {
|
|
if (rw & 1) { /* WRITE */
|
|
if (rw & 2)
|
|
err = writeall(dirname);
|
|
else {
|
|
if (ns == 0)
|
|
err = writenat(devfd, filename);
|
|
else if (ns == 1)
|
|
err = writestate(devfd, filename);
|
|
}
|
|
} else {
|
|
if (rw & 2)
|
|
err = readall(dirname);
|
|
else {
|
|
if (ns == 0)
|
|
err = readnat(devfd, filename);
|
|
else if (ns == 1)
|
|
err = readstate(devfd, filename);
|
|
}
|
|
}
|
|
}
|
|
return err;
|
|
}
|
|
|
|
|
|
int opendevice(ipfdev)
|
|
char *ipfdev;
|
|
{
|
|
int fd = -1;
|
|
|
|
if (opts & OPT_DONOTHING)
|
|
return -2;
|
|
|
|
if (!ipfdev)
|
|
ipfdev = IPL_NAME;
|
|
|
|
if ((fd = open(ipfdev, O_RDWR)) == -1)
|
|
if ((fd = open(ipfdev, O_RDONLY)) == -1)
|
|
perror("open device");
|
|
return fd;
|
|
}
|
|
|
|
|
|
void closedevice(fd)
|
|
int fd;
|
|
{
|
|
close(fd);
|
|
}
|
|
|
|
|
|
int setlock(fd, lock)
|
|
int fd, lock;
|
|
{
|
|
if (opts & OPT_VERBOSE)
|
|
printf("Turn lock %s\n", lock ? "on" : "off");
|
|
if (!(opts & OPT_DONOTHING)) {
|
|
if (ioctl(fd, SIOCSTLCK, &lock) == -1) {
|
|
perror("SIOCSTLCK");
|
|
return 1;
|
|
}
|
|
if (opts & OPT_VERBOSE)
|
|
printf("Lock now %s\n", lock ? "on" : "off");
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
int writestate(fd, file)
|
|
int fd;
|
|
char *file;
|
|
{
|
|
ipstate_save_t ips, *ipsp;
|
|
int wfd = -1;
|
|
|
|
wfd = open(file, O_WRONLY|O_TRUNC|O_CREAT, 0600);
|
|
if (wfd == -1) {
|
|
fprintf(stderr, "%s ", file);
|
|
perror("state:open");
|
|
return 1;
|
|
}
|
|
|
|
ipsp = &ips;
|
|
bzero((char *)ipsp, sizeof(ips));
|
|
|
|
do {
|
|
if (opts & OPT_VERBOSE)
|
|
printf("Getting state from addr %p\n", ips.ips_next);
|
|
if (ioctl(fd, SIOCSTGET, &ipsp)) {
|
|
if (errno == ENOENT)
|
|
break;
|
|
perror("state:SIOCSTGET");
|
|
close(wfd);
|
|
return 1;
|
|
}
|
|
if (opts & OPT_VERBOSE)
|
|
printf("Got state next %p\n", ips.ips_next);
|
|
if (write(wfd, ipsp, sizeof(ips)) != sizeof(ips)) {
|
|
perror("state:write");
|
|
close(wfd);
|
|
return 1;
|
|
}
|
|
} while (ips.ips_next != NULL);
|
|
close(wfd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int readstate(fd, file)
|
|
int fd;
|
|
char *file;
|
|
{
|
|
ipstate_save_t ips, *is, *ipshead = NULL, *is1, *ipstail = NULL;
|
|
int sfd = -1, i;
|
|
|
|
sfd = open(file, O_RDONLY, 0600);
|
|
if (sfd == -1) {
|
|
fprintf(stderr, "%s ", file);
|
|
perror("open");
|
|
return 1;
|
|
}
|
|
|
|
bzero((char *)&ips, sizeof(ips));
|
|
|
|
/*
|
|
* 1. Read all state information in.
|
|
*/
|
|
do {
|
|
i = read(sfd, &ips, sizeof(ips));
|
|
if (i == -1) {
|
|
perror("read");
|
|
close(sfd);
|
|
return 1;
|
|
}
|
|
if (i == 0)
|
|
break;
|
|
if (i != sizeof(ips)) {
|
|
fprintf(stderr, "incomplete read: %d != %d\n", i,
|
|
(int)sizeof(ips));
|
|
close(sfd);
|
|
return 1;
|
|
}
|
|
is = (ipstate_save_t *)malloc(sizeof(*is));
|
|
bcopy((char *)&ips, (char *)is, sizeof(ips));
|
|
|
|
/*
|
|
* Check to see if this is the first state entry that will
|
|
* reference a particular rule and if so, flag it as such
|
|
* else just adjust the rule pointer to become a pointer to
|
|
* the other. We do this so we have a means later for tracking
|
|
* who is referencing us when we get back the real pointer
|
|
* in is_rule after doing the ioctl.
|
|
*/
|
|
for (is1 = ipshead; is1 != NULL; is1 = is1->ips_next)
|
|
if (is1->ips_rule == is->ips_rule)
|
|
break;
|
|
if (is1 == NULL)
|
|
is->ips_is.is_flags |= FI_NEWFR;
|
|
else
|
|
is->ips_rule = (void *)&is1->ips_rule;
|
|
|
|
/*
|
|
* Use a tail-queue type list (add things to the end)..
|
|
*/
|
|
is->ips_next = NULL;
|
|
if (!ipshead)
|
|
ipshead = is;
|
|
if (ipstail)
|
|
ipstail->ips_next = is;
|
|
ipstail = is;
|
|
} while (1);
|
|
|
|
close(sfd);
|
|
|
|
for (is = ipshead; is; is = is->ips_next) {
|
|
if (opts & OPT_VERBOSE)
|
|
printf("Loading new state table entry\n");
|
|
if (is->ips_is.is_flags & FI_NEWFR) {
|
|
if (opts & OPT_VERBOSE)
|
|
printf("Loading new filter rule\n");
|
|
}
|
|
if (!(opts & OPT_DONOTHING))
|
|
if (ioctl(fd, SIOCSTPUT, &is)) {
|
|
perror("SIOCSTPUT");
|
|
return 1;
|
|
}
|
|
|
|
if (is->ips_is.is_flags & FI_NEWFR) {
|
|
if (opts & OPT_VERBOSE)
|
|
printf("Real rule addr %p\n", is->ips_rule);
|
|
for (is1 = is->ips_next; is1; is1 = is1->ips_next)
|
|
if (is1->ips_rule == (frentry_t *)&is->ips_rule)
|
|
is1->ips_rule = is->ips_rule;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int readnat(fd, file)
|
|
int fd;
|
|
char *file;
|
|
{
|
|
nat_save_t ipn, *in, *ipnhead = NULL, *in1, *ipntail = NULL, *ipnp;
|
|
int nfd = -1, i;
|
|
nat_t *nat;
|
|
|
|
nfd = open(file, O_RDONLY);
|
|
if (nfd == -1) {
|
|
fprintf(stderr, "%s ", file);
|
|
perror("nat:open");
|
|
return 1;
|
|
}
|
|
|
|
bzero((char *)&ipn, sizeof(ipn));
|
|
|
|
/*
|
|
* 1. Read all state information in.
|
|
*/
|
|
do {
|
|
i = read(nfd, &ipn, sizeof(ipn));
|
|
if (i == -1) {
|
|
perror("read");
|
|
close(nfd);
|
|
return 1;
|
|
}
|
|
if (i == 0)
|
|
break;
|
|
if (i != sizeof(ipn)) {
|
|
fprintf(stderr, "incomplete read: %d != %d\n", i,
|
|
(int)sizeof(ipn));
|
|
close(nfd);
|
|
return 1;
|
|
}
|
|
|
|
if (ipn.ipn_dsize > 0) {
|
|
char *s = ipnp->ipn_data;
|
|
int n = ipnp->ipn_dsize;
|
|
|
|
n -= sizeof(ipnp->ipn_data);
|
|
in = malloc(sizeof(*in) + n);
|
|
if (!in)
|
|
break;
|
|
|
|
s += sizeof(ipnp->ipn_data);
|
|
i = read(nfd, s, n);
|
|
if (i == 0)
|
|
break;
|
|
if (i != n) {
|
|
fprintf(stderr, "incomplete read: %d != %d\n",
|
|
i, n);
|
|
close(nfd);
|
|
return 1;
|
|
}
|
|
} else
|
|
in = (nat_save_t *)malloc(sizeof(*in));
|
|
bcopy((char *)&ipnp, (char *)in, sizeof(ipn));
|
|
|
|
/*
|
|
* Check to see if this is the first state entry that will
|
|
* reference a particular rule and if so, flag it as such
|
|
* else just adjust the rule pointer to become a pointer to
|
|
* the other. We do this so we have a means later for tracking
|
|
* who is referencing us when we get back the real pointer
|
|
* in is_rule after doing the ioctl.
|
|
*/
|
|
nat = &in->ipn_nat;
|
|
if (nat->nat_fr != NULL) {
|
|
for (in1 = ipnhead; in1 != NULL; in1 = in1->ipn_next)
|
|
if (in1->ipn_rule == nat->nat_fr)
|
|
break;
|
|
if (in1 == NULL)
|
|
nat->nat_flags |= FI_NEWFR;
|
|
else
|
|
nat->nat_fr = &in1->ipn_fr;
|
|
}
|
|
|
|
/*
|
|
* Use a tail-queue type list (add things to the end)..
|
|
*/
|
|
in->ipn_next = NULL;
|
|
if (!ipnhead)
|
|
ipnhead = in;
|
|
if (ipntail)
|
|
ipntail->ipn_next = in;
|
|
ipntail = in;
|
|
} while (1);
|
|
|
|
close(nfd);
|
|
|
|
for (in = ipnhead; in; in = in->ipn_next) {
|
|
if (opts & OPT_VERBOSE)
|
|
printf("Loading new NAT table entry\n");
|
|
nat = &in->ipn_nat;
|
|
if (nat->nat_flags & FI_NEWFR) {
|
|
if (opts & OPT_VERBOSE)
|
|
printf("Loading new filter rule\n");
|
|
}
|
|
if (!(opts & OPT_DONOTHING))
|
|
if (ioctl(fd, SIOCSTPUT, &in)) {
|
|
perror("SIOCSTPUT");
|
|
return 1;
|
|
}
|
|
|
|
if (nat->nat_flags & FI_NEWFR) {
|
|
if (opts & OPT_VERBOSE)
|
|
printf("Real rule addr %p\n", nat->nat_fr);
|
|
for (in1 = in->ipn_next; in1; in1 = in1->ipn_next)
|
|
if (in1->ipn_rule == &in->ipn_fr)
|
|
in1->ipn_rule = nat->nat_fr;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int writenat(fd, file)
|
|
int fd;
|
|
char *file;
|
|
{
|
|
nat_save_t *ipnp = NULL, *next = NULL;
|
|
int nfd = -1;
|
|
natget_t ng;
|
|
|
|
nfd = open(file, O_WRONLY|O_TRUNC|O_CREAT, 0600);
|
|
if (nfd == -1) {
|
|
fprintf(stderr, "%s ", file);
|
|
perror("nat:open");
|
|
return 1;
|
|
}
|
|
|
|
|
|
do {
|
|
if (opts & OPT_VERBOSE)
|
|
printf("Getting nat from addr %p\n", ipnp);
|
|
ng.ng_ptr = next;
|
|
ng.ng_sz = 0;
|
|
if (ioctl(fd, SIOCSTGSZ, &ng)) {
|
|
perror("nat:SIOCSTGSZ");
|
|
close(nfd);
|
|
return 1;
|
|
}
|
|
|
|
if (opts & OPT_VERBOSE)
|
|
printf("NAT size %d from %p\n", ng.ng_sz, ng.ng_ptr);
|
|
|
|
if (ng.ng_sz == 0)
|
|
break;
|
|
|
|
if (!ipnp)
|
|
ipnp = malloc(ng.ng_sz);
|
|
else
|
|
ipnp = realloc((char *)ipnp, ng.ng_sz);
|
|
if (!ipnp) {
|
|
fprintf(stderr,
|
|
"malloc for %d bytes failed\n", ng.ng_sz);
|
|
break;
|
|
}
|
|
|
|
bzero((char *)ipnp, ng.ng_sz);
|
|
ipnp->ipn_next = next;
|
|
if (ioctl(fd, SIOCSTGET, &ipnp)) {
|
|
if (errno == ENOENT)
|
|
break;
|
|
perror("nat:SIOCSTGET");
|
|
close(nfd);
|
|
return 1;
|
|
}
|
|
|
|
if (opts & OPT_VERBOSE)
|
|
printf("Got nat next %p\n", ipnp->ipn_next);
|
|
if (write(nfd, ipnp, ng.ng_sz) != ng.ng_sz) {
|
|
perror("nat:write");
|
|
close(nfd);
|
|
return 1;
|
|
}
|
|
next = ipnp->ipn_next;
|
|
} while (ipnp && next);
|
|
close(nfd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int writeall(dirname)
|
|
char *dirname;
|
|
{
|
|
int fd, devfd;
|
|
|
|
if (!dirname)
|
|
dirname = IPF_SAVEDIR;
|
|
|
|
if (chdir(dirname)) {
|
|
perror("chdir(IPF_SAVEDIR)");
|
|
return 1;
|
|
}
|
|
|
|
fd = opendevice(NULL);
|
|
if (fd == -1)
|
|
return 1;
|
|
if (setlock(fd, 1)) {
|
|
close(fd);
|
|
return 1;
|
|
}
|
|
|
|
devfd = opendevice(IPL_STATE);
|
|
if (devfd == -1)
|
|
return 1;
|
|
if (writestate(devfd, "ipstate.ipf"))
|
|
return 1;
|
|
close(devfd);
|
|
|
|
devfd = opendevice(IPL_NAT);
|
|
if (devfd == -1)
|
|
return 1;
|
|
if (writenat(devfd, "ipnat.ipf"))
|
|
return 1;
|
|
close(devfd);
|
|
|
|
if (setlock(fd, 0)) {
|
|
close(fd);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
int readall(dirname)
|
|
char *dirname;
|
|
{
|
|
int fd, devfd;
|
|
|
|
if (!dirname)
|
|
dirname = IPF_SAVEDIR;
|
|
|
|
if (chdir(dirname)) {
|
|
perror("chdir(IPF_SAVEDIR)");
|
|
return 1;
|
|
}
|
|
|
|
fd = opendevice(NULL);
|
|
if (fd == -1)
|
|
return 1;
|
|
if (setlock(fd, 1)) {
|
|
close(fd);
|
|
return 1;
|
|
}
|
|
|
|
devfd = opendevice(IPL_STATE);
|
|
if (devfd == -1)
|
|
return 1;
|
|
if (readstate(devfd, "ipstate.ipf"))
|
|
return 1;
|
|
close(devfd);
|
|
|
|
devfd = opendevice(IPL_NAT);
|
|
if (devfd == -1)
|
|
return 1;
|
|
if (readnat(devfd, "ipnat.ipf"))
|
|
return 1;
|
|
close(devfd);
|
|
|
|
if (setlock(fd, 0)) {
|
|
close(fd);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|