1 /* 2 * Author: Paul.Russell (at) rustcorp.com.au and mneuling (at) 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 (at) netfilter.org>: 7 * Paul 'Rusty' Russell <rusty (at) rustcorp.com.au> 8 * Marc Boucher <marc+nf (at) mbsi.ca> 9 * James Morris <jmorris (at) intercode.com.au> 10 * Harald Welte <laforge (at) gnumonks.org> 11 * Jozsef Kadlecsik <kadlec (at) 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 <signal.h> 38 #include <string.h> 39 #include <iptables.h> 40 #include "iptables-multi.h" 41 42 int 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 #if defined(ALL_INCLUSIVE) || defined(NO_SHARED_LIBS) 60 init_extensions(); 61 init_extensions4(); 62 #endif 63 64 ret = do_command4(argc, argv, &table, &handle, false); 65 if (ret) { 66 ret = iptc_commit(handle); 67 iptc_free(handle); 68 } 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 84 exit(!ret); 85 } 86
