1 /*
2 * Author: [email protected] and [email protected]
3 *
4 * Based on the ipchains code by Paul Russell and Michael Neuling
5 *
6 * (C) 2000-2002 by the netfilter coreteam <[email protected]>:
7 * Paul 'Rusty' Russell <[email protected]>
8 * Marc Boucher <[email protected]>
9 * James Morris <[email protected]>
10 * Harald Welte <[email protected]>
11 * Jozsef Kadlecsik <[email protected]>
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 <signal.h>
38 #include <string.h>
39 #include <iptables.h>
40 #include "iptables-multi.h"
41
42 int
iptables_main(int argc,char * argv[])43 iptables_main(int argc, char *argv[])
44 {
45 int ret;
46 char *table = "filter";
47 struct xtc_handle *handle = NULL;
48
49 signal(SIGPIPE, SIG_IGN);
50
51 iptables_globals.program_name = "iptables";
52 ret = xtables_init_all(&iptables_globals, NFPROTO_IPV4);
53 if (ret < 0) {
54 fprintf(stderr, "%s/%s Failed to initialize xtables\n",
55 iptables_globals.program_name,
56 iptables_globals.program_version);
57 exit(1);
58 }
59 init_extensions();
60 init_extensions4();
61
62 ret = do_command4(argc, argv, &table, &handle, false);
63 if (ret) {
64 ret = iptc_commit(handle);
65 iptc_free(handle);
66 }
67
68 xtables_fini();
69
70 if (!ret) {
71 if (errno == EINVAL) {
72 fprintf(stderr, "iptables: %s. "
73 "Run `dmesg' for more information.\n",
74 iptc_strerror(errno));
75 } else {
76 fprintf(stderr, "iptables: %s.\n",
77 iptc_strerror(errno));
78 }
79 if (errno == EAGAIN)
80 exit(RESOURCE_PROBLEM);
81 }
82
83 exit(!ret);
84 }
85