util.c

/*
 * Utitlity functions
 *
 * (c) 1997 Stefan Bethke. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice unmodified, this list of conditions, and the following
 *    disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/types.h>

#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>

int gDebug;


char *iptoa (uint32_t ip) {
	static char s[16];
	
	sprintf (s, "%ld.%ld.%ld.%ld", 
		(ip>>24) & 0xff, (ip>>16) & 0xff, 
		(ip>> 8) & 0xff, ip & 0xff);
	return s;
}


uint32_t atoip (char *s) {
	uint32_t ip;
	
	ip = strtol (s, &s, 0);
	if (*s++ != '.' ) return 0;
	ip = (ip << 8) | strtol (s, &s, 0);
	if (*s++ != '.' ) return 0;
	ip = (ip << 8) | strtol (s, &s, 0);
	if (*s++ != '.' ) return 0;
	ip = (ip << 8) | strtol (s, &s, 0);
	if (*s != 0) return 0;
	return ip;
}