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      1 /*	$NetBSD: in_print.c,v 1.1 2014/12/02 19:35:27 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2014 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 #include <sys/cdefs.h>
     29 
     30 #include <sys/types.h>
     31 #ifdef _KERNEL
     32 __KERNEL_RCSID(0, "$NetBSD: in_print.c,v 1.1 2014/12/02 19:35:27 christos Exp $");
     33 #include <sys/systm.h>
     34 #else
     35 __RCSID("$NetBSD: in_print.c,v 1.1 2014/12/02 19:35:27 christos Exp $");
     36 #include <stdio.h>
     37 #endif
     38 #include <netinet/in.h>
     39 
     40 int
     41 in_print(char *buf, size_t len, const struct in_addr *ia)
     42 {
     43 	const in_addr_t a = ntohl(ia->s_addr);
     44 	return snprintf(buf, len, "%d.%d.%d.%d",
     45 	    (a >> 24) & 0xff, (a >> 16) & 0xff,
     46 	    (a >>  8) & 0xff, (a >>  0) & 0xff);
     47 }
     48 
     49 int
     50 sin_print(char *buf, size_t len, const void *v)
     51 {
     52 	const struct sockaddr_in *sin = v;
     53 	const struct in_addr *ia = &sin->sin_addr;
     54 	char abuf[INET_ADDRSTRLEN];
     55 
     56 	if (!sin->sin_port)
     57 		return in_print(buf, len, ia);
     58 
     59 	in_print(abuf, sizeof(abuf), ia);
     60 	return snprintf(buf, len, "%s:%hu", abuf, ntohs(sin->sin_port));
     61 }
     62