1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * Copyright (c) 1995, 1996, 1998 Theo de Raadt. All rights reserved.
3*0Sstevel@tonic-gate * Copyright (c) 1983, 1993, 1994
4*0Sstevel@tonic-gate * The Regents of the University of California. All rights reserved.
5*0Sstevel@tonic-gate *
6*0Sstevel@tonic-gate * Redistribution and use in source and binary forms, with or without
7*0Sstevel@tonic-gate * modification, are permitted provided that the following conditions
8*0Sstevel@tonic-gate * are met:
9*0Sstevel@tonic-gate * 1. Redistributions of source code must retain the above copyright
10*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer.
11*0Sstevel@tonic-gate * 2. Redistributions in binary form must reproduce the above copyright
12*0Sstevel@tonic-gate * notice, this list of conditions and the following disclaimer in the
13*0Sstevel@tonic-gate * documentation and/or other materials provided with the distribution.
14*0Sstevel@tonic-gate * 3. All advertising materials mentioning features or use of this software
15*0Sstevel@tonic-gate * must display the following acknowledgement:
16*0Sstevel@tonic-gate * This product includes software developed by the University of
17*0Sstevel@tonic-gate * California, Berkeley and its contributors.
18*0Sstevel@tonic-gate * This product includes software developed by Theo de Raadt.
19*0Sstevel@tonic-gate * 4. Neither the name of the University nor the names of its contributors
20*0Sstevel@tonic-gate * may be used to endorse or promote products derived from this software
21*0Sstevel@tonic-gate * without specific prior written permission.
22*0Sstevel@tonic-gate *
23*0Sstevel@tonic-gate * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24*0Sstevel@tonic-gate * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25*0Sstevel@tonic-gate * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26*0Sstevel@tonic-gate * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27*0Sstevel@tonic-gate * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28*0Sstevel@tonic-gate * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29*0Sstevel@tonic-gate * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30*0Sstevel@tonic-gate * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31*0Sstevel@tonic-gate * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32*0Sstevel@tonic-gate * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33*0Sstevel@tonic-gate * SUCH DAMAGE.
34*0Sstevel@tonic-gate */
35*0Sstevel@tonic-gate
36*0Sstevel@tonic-gate #include "includes.h"
37*0Sstevel@tonic-gate
38*0Sstevel@tonic-gate #ifndef HAVE_RRESVPORT_AF
39*0Sstevel@tonic-gate
40*0Sstevel@tonic-gate #if defined(LIBC_SCCS) && !defined(lint)
41*0Sstevel@tonic-gate static char *rcsid = "$OpenBSD: rresvport.c,v 1.5 2000/01/26 03:43:20 deraadt Exp $";
42*0Sstevel@tonic-gate #endif /* LIBC_SCCS and not lint */
43*0Sstevel@tonic-gate
44*0Sstevel@tonic-gate #include "includes.h"
45*0Sstevel@tonic-gate
46*0Sstevel@tonic-gate #if 0
47*0Sstevel@tonic-gate int
48*0Sstevel@tonic-gate rresvport(alport)
49*0Sstevel@tonic-gate int *alport;
50*0Sstevel@tonic-gate {
51*0Sstevel@tonic-gate return rresvport_af(alport, AF_INET);
52*0Sstevel@tonic-gate }
53*0Sstevel@tonic-gate #endif
54*0Sstevel@tonic-gate
55*0Sstevel@tonic-gate int
rresvport_af(int * alport,sa_family_t af)56*0Sstevel@tonic-gate rresvport_af(int *alport, sa_family_t af)
57*0Sstevel@tonic-gate {
58*0Sstevel@tonic-gate struct sockaddr_storage ss;
59*0Sstevel@tonic-gate struct sockaddr *sa;
60*0Sstevel@tonic-gate u_int16_t *portp;
61*0Sstevel@tonic-gate int s;
62*0Sstevel@tonic-gate socklen_t salen;
63*0Sstevel@tonic-gate
64*0Sstevel@tonic-gate memset(&ss, '\0', sizeof ss);
65*0Sstevel@tonic-gate sa = (struct sockaddr *)&ss;
66*0Sstevel@tonic-gate
67*0Sstevel@tonic-gate switch (af) {
68*0Sstevel@tonic-gate case AF_INET:
69*0Sstevel@tonic-gate salen = sizeof(struct sockaddr_in);
70*0Sstevel@tonic-gate portp = &((struct sockaddr_in *)sa)->sin_port;
71*0Sstevel@tonic-gate break;
72*0Sstevel@tonic-gate case AF_INET6:
73*0Sstevel@tonic-gate salen = sizeof(struct sockaddr_in6);
74*0Sstevel@tonic-gate portp = &((struct sockaddr_in6 *)sa)->sin6_port;
75*0Sstevel@tonic-gate break;
76*0Sstevel@tonic-gate default:
77*0Sstevel@tonic-gate errno = EPFNOSUPPORT;
78*0Sstevel@tonic-gate return (-1);
79*0Sstevel@tonic-gate }
80*0Sstevel@tonic-gate sa->sa_family = af;
81*0Sstevel@tonic-gate
82*0Sstevel@tonic-gate s = socket(af, SOCK_STREAM, 0);
83*0Sstevel@tonic-gate if (s < 0)
84*0Sstevel@tonic-gate return (-1);
85*0Sstevel@tonic-gate
86*0Sstevel@tonic-gate *portp = htons(*alport);
87*0Sstevel@tonic-gate if (*alport < IPPORT_RESERVED - 1) {
88*0Sstevel@tonic-gate if (bind(s, sa, salen) >= 0)
89*0Sstevel@tonic-gate return (s);
90*0Sstevel@tonic-gate if (errno != EADDRINUSE) {
91*0Sstevel@tonic-gate (void)close(s);
92*0Sstevel@tonic-gate return (-1);
93*0Sstevel@tonic-gate }
94*0Sstevel@tonic-gate }
95*0Sstevel@tonic-gate
96*0Sstevel@tonic-gate *portp = 0;
97*0Sstevel@tonic-gate sa->sa_family = af;
98*0Sstevel@tonic-gate if (bindresvport_sa(s, sa) == -1) {
99*0Sstevel@tonic-gate (void)close(s);
100*0Sstevel@tonic-gate return (-1);
101*0Sstevel@tonic-gate }
102*0Sstevel@tonic-gate *alport = ntohs(*portp);
103*0Sstevel@tonic-gate return (s);
104*0Sstevel@tonic-gate }
105*0Sstevel@tonic-gate
106*0Sstevel@tonic-gate #endif /* HAVE_RRESVPORT_AF */
107*0Sstevel@tonic-gate
108*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
109