1 /* $NetBSD: getport.c,v 1.2 2008/04/28 20:24:14 martin Exp $ */
4 * Copyright (c) 2004 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
32 #include <sys/cdefs.h>
33 __RCSID("$NetBSD: getport.c,v 1.2 2008/04/28 20:24:14 martin Exp $");
40 #include <netinet/in.h>
45 getport(const char *service
, const char *protocol
)
49 struct servent
*sp
= getservbyname(service
, protocol
);
53 if ((sp
= calloc(1, sizeof(*sp
))) == NULL
)
55 sp
->s_name
= __UNCONST(service
);
56 sp
->s_proto
= __UNCONST(protocol
);
57 port
= strtol(service
, &ep
, 0);
58 if ((service
[0] != '\0' && *ep
!= '\0') ||
60 (port
== LONG_MAX
|| port
== LONG_MIN
)) ||
61 (port
<= 0 || port
>= IPPORT_ANONMAX
))
62 errx(1,"port must be between 1 and %d",
64 sp
->s_port
= htons((uint16_t)port
);