iptables-standalone.c revision f643eb37e49a212d40eb060bcdfafbc366c0d616 
1/*
2 * Author: Paul.Russell@rustcorp.com.au and mneuling@radlogic.com.au
3 *
4 * Based on the ipchains code by Paul Russell and Michael Neuling
5 *
6 * (C) 2000-2002 by the netfilter coreteam <coreteam@netfilter.org>:
7 * 		    Paul 'Rusty' Russell <rusty@rustcorp.com.au>
8 * 		    Marc Boucher <marc+nf@mbsi.ca>
9 * 		    James Morris <jmorris@intercode.com.au>
10 * 		    Harald Welte <laforge@gnumonks.org>
11 * 		    Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
12 *
13 *	iptables -- IP firewall administration for kernels with
14 *	firewall table (aimed for the 2.3 kernels)
15 *
16 *	See the accompanying manual page iptables(8) for information
17 *	about proper usage of this program.
18 *
19 *	This program is free software; you can redistribute it and/or modify
20 *	it under the terms of the GNU General Public License as published by
21 *	the Free Software Foundation; either version 2 of the License, or
22 *	(at your option) any later version.
23 *
24 *	This program is distributed in the hope that it will be useful,
25 *	but WITHOUT ANY WARRANTY; without even the implied warranty of
26 *	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
27 *	GNU General Public License for more details.
28 *
29 *	You should have received a copy of the GNU General Public License
30 *	along with this program; if not, write to the Free Software
31 *	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
32 */
33
34#include <stdio.h>
35#include <stdlib.h>
36#include <errno.h>
37#include <string.h>
38#include <iptables.h>
39#include "iptables-multi.h"
40
41int
42iptables_main(int argc, char *argv[])
43{
44	int ret;
45	char *table = "filter";
46	struct iptc_handle *handle = NULL;
47
48	iptables_globals.program_name = "iptables";
49	ret = xtables_init_all(&iptables_globals, NFPROTO_IPV4);
50	if (ret < 0) {
51		fprintf(stderr, "%s/%s Failed to initialize xtables\n",
52				iptables_globals.program_name,
53				iptables_globals.program_version);
54				exit(1);
55	}
56#if defined(ALL_INCLUSIVE) || defined(NO_SHARED_LIBS)
57	init_extensions();
58	init_extensions4();
59#endif
60
61	ret = do_command4(argc, argv, &table, &handle);
62	if (ret) {
63		ret = iptc_commit(handle);
64		iptc_free(handle);
65	}
66
67	if (!ret) {
68		if (errno == EINVAL) {
69			fprintf(stderr, "iptables: %s. "
70					"Run `dmesg' for more information.\n",
71				iptc_strerror(errno));
72		} else {
73			fprintf(stderr, "iptables: %s.\n",
74				iptc_strerror(errno));
75		}
76		if (errno == EAGAIN) {
77			exit(RESOURCE_PROBLEM);
78		}
79	}
80
81	exit(!ret);
82}
83