]> andersk Git - gssapi-openssh.git/blame - openssh/openbsd-compat/rresvport.c
shouldn't have been committed to OPENSSH_PORTABLE_DIST branch
[gssapi-openssh.git] / openssh / openbsd-compat / rresvport.c
CommitLineData
cdd66111 1/* OPENBSD ORIGINAL: lib/libc/net/rresvport.c */
2
3c0ef626 3/*
4 * Copyright (c) 1995, 1996, 1998 Theo de Raadt. All rights reserved.
5 * Copyright (c) 1983, 1993, 1994
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
0fff78ff 16 * 3. Neither the name of the University nor the names of its contributors
3c0ef626 17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
41b2f314 33#include "includes.h"
3c0ef626 34
35#ifndef HAVE_RRESVPORT_AF
36
37#if defined(LIBC_SCCS) && !defined(lint)
0fff78ff 38static char *rcsid = "$OpenBSD: rresvport.c,v 1.6 2003/06/03 02:11:35 deraadt Exp $";
3c0ef626 39#endif /* LIBC_SCCS and not lint */
40
41#include "includes.h"
42
43#if 0
44int
45rresvport(alport)
46 int *alport;
47{
48 return rresvport_af(alport, AF_INET);
49}
50#endif
51
52int
53rresvport_af(int *alport, sa_family_t af)
54{
55 struct sockaddr_storage ss;
56 struct sockaddr *sa;
57 u_int16_t *portp;
58 int s;
59 socklen_t salen;
60
61 memset(&ss, '\0', sizeof ss);
62 sa = (struct sockaddr *)&ss;
63
64 switch (af) {
65 case AF_INET:
66 salen = sizeof(struct sockaddr_in);
67 portp = &((struct sockaddr_in *)sa)->sin_port;
68 break;
69 case AF_INET6:
70 salen = sizeof(struct sockaddr_in6);
71 portp = &((struct sockaddr_in6 *)sa)->sin6_port;
72 break;
73 default:
74 errno = EPFNOSUPPORT;
75 return (-1);
76 }
77 sa->sa_family = af;
78
79 s = socket(af, SOCK_STREAM, 0);
80 if (s < 0)
81 return (-1);
82
83 *portp = htons(*alport);
84 if (*alport < IPPORT_RESERVED - 1) {
85 if (bind(s, sa, salen) >= 0)
86 return (s);
87 if (errno != EADDRINUSE) {
88 (void)close(s);
89 return (-1);
90 }
91 }
92
93 *portp = 0;
94 sa->sa_family = af;
95 if (bindresvport_sa(s, sa) == -1) {
96 (void)close(s);
97 return (-1);
98 }
99 *alport = ntohs(*portp);
100 return (s);
101}
102
103#endif /* HAVE_RRESVPORT_AF */
This page took 0.085432 seconds and 5 git commands to generate.