others
/* $Id$ */
/* Copyright (c) 2014 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Unix others */
/* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <unistd.h>
#include <stdio.h>
#include <netdb.h>
/* netid */
/* private */
/* prototypes */
static int _netid(char const * network);
static int _netid_error(char const * message, int ret);
static int _netid_usage(void);
/* netid */
static int _netid(char const * network)
{
struct netent * ne;
if((ne = getnetbyname(network)) == NULL)
return -_netid_error(network, 1);
printf("%u\n", ne->n_net);
return 0;
}
/* netid_error */
static int _netid_error(char const * message, int ret)
{
fprintf(stderr, "%s: %s: %s\n", "netid", message, "Network not found");
return ret;
}
/* netid_usage */
static int _netid_usage(void)
{
fputs("Usage: netid network...\n", stderr);
return 1;
}
/* main */
int main(int argc, char * argv[])
{
int o;
int i;
while((o = getopt(argc, argv, "")) != -1)
switch(o)
{
default:
return _netid_usage();
}
if(optind == argc)
return _netid_usage();
for(i = optind; i < argc; i++)
/* XXX report errors */
_netid(argv[i]);
return 0;
}