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      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 <string.h>
     38 #include <iptables.h>
     39 
     40 #ifdef IPTABLES_MULTI
     41 int
     42 iptables_main(int argc, char *argv[])
     43 #else
     44 int
     45 main(int argc, char *argv[])
     46 #endif
     47 {
     48 	int ret;
     49 	char *table = "filter";
     50 	iptc_handle_t handle = NULL;
     51 
     52 	program_name = "iptables";
     53 	program_version = IPTABLES_VERSION;
     54 
     55 	lib_dir = getenv("IPTABLES_LIB_DIR");
     56 	if (!lib_dir)
     57 		lib_dir = IPT_LIB_DIR;
     58 
     59 #ifdef NO_SHARED_LIBS
     60 	init_extensions();
     61 #endif
     62 
     63 	ret = do_command(argc, argv, &table, &handle);
     64 	if (ret)
     65 		ret = iptc_commit(&handle);
     66 
     67 	if (!ret) {
     68 		fprintf(stderr, "iptables: %s\n",
     69 			iptc_strerror(errno));
     70 		if (errno == EAGAIN) {
     71 			exit(RESOURCE_PROBLEM);
     72 		}
     73 	}
     74 
     75 	exit(!ret);
     76 }
     77