test/resolver_test.c
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 /* $Id$ */
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 /*
  *
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  * Copyright (C) 2001-2003 FhG Fokus
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  *
  * This file is part of ser, a free SIP server.
  *
  * ser 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; either version 2 of the License, or
  * (at your option) any later version
  *
  * For a license to use the ser software under conditions
  * other than those described here, or to purchase support for this
  * software, please contact iptel.org by e-mail at the following addresses:
  *    info@iptel.org
  *
  * ser 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, write to the Free Software 
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  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
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  */
 
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 #include <stdio.h>
 #include <stdlib.h>
 #include <errno.h>
 #include <string.h>
 #include <ctype.h>
 #include <netdb.h>
 #include <unistd.h>
 #include <sys/types.h>
 #include <fcntl.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
 
 
 static char *id="$Id$";
 static char *version="resolver_test 0.1";
 static char* help_msg="\
 Usage: resolver -n address [-c count] [-v]\n\
 Options:\n\
     -n address    address to be resolved\n\
     -c count      how many times to resolve it\n\
     -v            increase verbosity level\n\
     -V            version number\n\
     -h            this help message\n\
 ";
 
 
 
 int main (int argc, char** argv)
 {
 	char c;
 	struct hostent* he;
 	int ok;
 	int errors;
 	int r;
 	char *tmp;
 	
 	int count;
 	int verbose;
 	char *address;
 	
 	/* init */
 	count=0;
 	verbose=0;
 	address=0;
 
 	ok=errors=0;
 
 	opterr=0;
 	while ((c=getopt(argc,argv, "n:c:vhV"))!=-1){
 		switch(c){
 			case 'n':
 				address=optarg;
 				break;
 			case 'v':
 				verbose++;
 				break;
 			case 'c':
 				count=strtol(optarg, &tmp, 10);
 				if ((tmp==0)||(*tmp)){
 					fprintf(stderr, "bad count: -c %s\n", optarg);
 					goto error;
 				}
 				break;
 			case 'V':
 				printf("version: %s\n", version);
 				printf("%s\n",id);
 				exit(0);
 				break;
 			case 'h':
 				printf("version: %s\n", version);
 				printf("%s", help_msg);
 				exit(0);
 				break;
 			case '?':
 				if (isprint(optopt))
 					fprintf(stderr, "Unknown option `-%c�\n", optopt);
 				else
 					fprintf(stderr, "Unknown character `\\x%x�\n", optopt);
 				goto error;
 			case ':':
 				fprintf(stderr, "Option `-%c� requires an argument.\n",
 						optopt);
 				goto error;
 				break;
 			default:
 					abort();
 		}
 	}
 	
 	/* check if all the required params are present */
 	if (address==0){
 		fprintf(stderr, "Missing -a address\n");
 		exit(-1);
 	}
 	if(count==0){
 		fprintf(stderr, "Missing count (-c number)\n");
 		exit(-1);
 	}else if(count<0){
 		fprintf(stderr, "Invalid count (-c %d)\n", count);
 		exit(-1);
 	}
 	
 
 
 	/* flood loop */
 	for (r=0; r<count; r++){
 		if ((verbose>1)&&(r%1000))  putchar('.');
 		/* resolve destination loop */
 		he=gethostbyname(address);
 		if (he==0){
 			errors++;
 			if (verbose>1) 
 				putchar('?');
 		}else ok++;
 	}
 
 	printf("\n%d requests, %d succeeded, %d errors\n", count, ok, errors);
 
 	exit(0);
 
 error:
 	exit(-1);
 }