getport.c revision 1.1.2.2
1 1.1.2.2 jmc /* $NetBSD: getport.c,v 1.1.2.2 2004/11/12 05:51:56 jmc Exp $ */ 2 1.1.2.2 jmc 3 1.1.2.2 jmc /*- 4 1.1.2.2 jmc * Copyright (c) 2004 The NetBSD Foundation, Inc. 5 1.1.2.2 jmc * All rights reserved. 6 1.1.2.2 jmc * 7 1.1.2.2 jmc * This code is derived from software contributed to The NetBSD Foundation 8 1.1.2.2 jmc * by Christos Zoulas. 9 1.1.2.2 jmc * 10 1.1.2.2 jmc * Redistribution and use in source and binary forms, with or without 11 1.1.2.2 jmc * modification, are permitted provided that the following conditions 12 1.1.2.2 jmc * are met: 13 1.1.2.2 jmc * 1. Redistributions of source code must retain the above copyright 14 1.1.2.2 jmc * notice, this list of conditions and the following disclaimer. 15 1.1.2.2 jmc * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.2.2 jmc * notice, this list of conditions and the following disclaimer in the 17 1.1.2.2 jmc * documentation and/or other materials provided with the distribution. 18 1.1.2.2 jmc * 3. All advertising materials mentioning features or use of this software 19 1.1.2.2 jmc * must display the following acknowledgement: 20 1.1.2.2 jmc * This product includes software developed by the NetBSD 21 1.1.2.2 jmc * Foundation, Inc. and its contributors. 22 1.1.2.2 jmc * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.1.2.2 jmc * contributors may be used to endorse or promote products derived 24 1.1.2.2 jmc * from this software without specific prior written permission. 25 1.1.2.2 jmc * 26 1.1.2.2 jmc * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.1.2.2 jmc * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.1.2.2 jmc * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.1.2.2 jmc * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.1.2.2 jmc * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.1.2.2 jmc * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.1.2.2 jmc * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.1.2.2 jmc * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.1.2.2 jmc * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.1.2.2 jmc * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.1.2.2 jmc * POSSIBILITY OF SUCH DAMAGE. 37 1.1.2.2 jmc */ 38 1.1.2.2 jmc 39 1.1.2.2 jmc #include <sys/cdefs.h> 40 1.1.2.2 jmc __RCSID("$NetBSD: getport.c,v 1.1.2.2 2004/11/12 05:51:56 jmc Exp $"); 41 1.1.2.2 jmc 42 1.1.2.2 jmc #include <stdlib.h> 43 1.1.2.2 jmc #include <err.h> 44 1.1.2.2 jmc #include <netdb.h> 45 1.1.2.2 jmc #include <limits.h> 46 1.1.2.2 jmc #include <errno.h> 47 1.1.2.2 jmc #include <netinet/in.h> 48 1.1.2.2 jmc 49 1.1.2.2 jmc #include "getport.h" 50 1.1.2.2 jmc 51 1.1.2.2 jmc struct servent * 52 1.1.2.2 jmc getport(const char *service, const char *protocol) 53 1.1.2.2 jmc { 54 1.1.2.2 jmc long port; 55 1.1.2.2 jmc char *ep; 56 1.1.2.2 jmc struct servent *sp = getservbyname(service, protocol); 57 1.1.2.2 jmc if (sp != NULL) 58 1.1.2.2 jmc return sp; 59 1.1.2.2 jmc 60 1.1.2.2 jmc if ((sp = calloc(1, sizeof(*sp))) == NULL) 61 1.1.2.2 jmc err(1, "malloc"); 62 1.1.2.2 jmc sp->s_name = (char *)service; 63 1.1.2.2 jmc sp->s_proto = (char *)protocol; 64 1.1.2.2 jmc port = strtol(service, &ep, 0); 65 1.1.2.2 jmc if ((service[0] != '\0' && *ep != '\0') || 66 1.1.2.2 jmc (errno == ERANGE && 67 1.1.2.2 jmc (port == LONG_MAX || port == LONG_MIN)) || 68 1.1.2.2 jmc (port <= 0 || port >= IPPORT_ANONMAX)) 69 1.1.2.2 jmc errx(1,"port must be between 1 and %d", 70 1.1.2.2 jmc IPPORT_ANONMAX); 71 1.1.2.2 jmc sp->s_port = htons((uint16_t)port); 72 1.1.2.2 jmc return sp; 73 1.1.2.2 jmc } 74
Indexes created Mon Oct 27 08:10:08 GMT 2025