Add the DragonFly cvs id and perform general cleanups on cvs/rcs/sccs ids. Most
[dragonfly.git] / crypto / openssh / openbsd-compat / rresvport.c
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1/*
2 * Copyright (c) 1995, 1996, 1998 Theo de Raadt. All rights reserved.
3 * Copyright (c) 1983, 1993, 1994
4 * The Regents of the University of California. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by the University of
17 * California, Berkeley and its contributors.
18 * This product includes software developed by Theo de Raadt.
19 * 4. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
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34 *
35 * $OpenBSD: rresvport.c,v 1.5 2000/01/26 03:43:20 deraadt Exp $
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36 */
37
38#include "includes.h"
39
40#ifndef HAVE_RRESVPORT_AF
41
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42#include "includes.h"
43
44#if 0
45int
46rresvport(alport)
47 int *alport;
48{
49 return rresvport_af(alport, AF_INET);
50}
51#endif
52
53int
54rresvport_af(int *alport, sa_family_t af)
55{
56 struct sockaddr_storage ss;
57 struct sockaddr *sa;
58 u_int16_t *portp;
59 int s;
60 socklen_t salen;
61
62 memset(&ss, '\0', sizeof ss);
63 sa = (struct sockaddr *)&ss;
64
65 switch (af) {
66 case AF_INET:
67 salen = sizeof(struct sockaddr_in);
68 portp = &((struct sockaddr_in *)sa)->sin_port;
69 break;
70 case AF_INET6:
71 salen = sizeof(struct sockaddr_in6);
72 portp = &((struct sockaddr_in6 *)sa)->sin6_port;
73 break;
74 default:
75 errno = EPFNOSUPPORT;
76 return (-1);
77 }
78 sa->sa_family = af;
79
80 s = socket(af, SOCK_STREAM, 0);
81 if (s < 0)
82 return (-1);
83
84 *portp = htons(*alport);
85 if (*alport < IPPORT_RESERVED - 1) {
86 if (bind(s, sa, salen) >= 0)
87 return (s);
88 if (errno != EADDRINUSE) {
89 (void)close(s);
90 return (-1);
91 }
92 }
93
94 *portp = 0;
95 sa->sa_family = af;
96 if (bindresvport_sa(s, sa) == -1) {
97 (void)close(s);
98 return (-1);
99 }
100 *alport = ntohs(*portp);
101 return (s);
102}
103
104#endif /* HAVE_RRESVPORT_AF */