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/*
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* $Id$
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*
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*
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* Copyright (C) 2001-2003 FhG Fokus
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*
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* This file is part of ser, a free SIP server.
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*
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* ser is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version
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*
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* For a license to use the ser software under conditions
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* other than those described here, or to purchase support for this
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* software, please contact iptel.org by e-mail at the following addresses:
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* info@iptel.org
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*
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* ser is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <stdio.h>
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#include <errno.h>
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#include <unistd.h>
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#include <netdb.h>
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static char* id="$Id$";
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static char* version="gethostbyname 0.1";
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static char* help_msg="\
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Usage: gethostbyname [-hV] -n host\n\
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Options:\n\
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-n host host name\n\
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-V version number\n\
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-h this help message\n\
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";
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int main(int argc, char** argv)
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{
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char c;
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char* name;
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struct hostent* he;
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unsigned char** h;
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name=0;
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opterr=0;
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while ((c=getopt(argc, argv, "n:hV"))!=-1){
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switch(c){
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case 'n':
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name=optarg;
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break;
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case 'V':
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printf("version: %s\n", version);
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printf("%s\n", id);
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exit(0);
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break;
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case 'h':
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printf("version: %s\n", version);
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printf("%s", help_msg);
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exit(0);
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break;
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case '?':
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if (isprint(optopt))
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fprintf(stderr, "Unknown option `-%c´\n", optopt);
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else
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fprintf(stderr, "Unknown character `\\x%x´\n", optopt);
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goto error;
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case ':':
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fprintf(stderr, "Option `-%c´ requires an argument.\n",
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optopt);
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goto error;
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break;
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default:
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abort();
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}
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}
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if (name==0){
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fprintf(stderr, "Missing domain name (-n name)\n");
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goto error;
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}
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he=gethostbyname(name);
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if (he==0) printf("no answer\n");
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else{
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printf("h_name=%s\n", he->h_name);
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for(h=he->h_aliases;*h;h++)
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printf(" alias=%s\n", *h);
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for(h=he->h_addr_list;*h;h++)
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printf(" ip=%d.%d.%d.%d\n", (*h)[0],(*h)[1],(*h)[2],(*h)[3] );
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}
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printf("done\n");
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exit(0);
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error:
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exit(-1);
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}
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