[gssapi-openssh.git] / openssh / openbsd-compat / rresvport.c

/* $OpenBSD: rresvport.c,v 1.9 2005/11/10 10:00:17 espie Exp $ */
/*
 * Copyright (c) 1995, 1996, 1998 Theo de Raadt.  All rights reserved.
 * Copyright (c) 1983, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/* OPENBSD ORIGINAL: lib/libc/net/rresvport.c */

#include "includes.h"

#ifndef HAVE_RRESVPORT_AF

#if 0
int
rresvport(int *alport)
{
	return rresvport_af(alport, AF_INET);
}
#endif

int
rresvport_af(int *alport, sa_family_t af)
{
	struct sockaddr_storage ss;
	struct sockaddr *sa;
	u_int16_t *portp;
	int s;
	socklen_t salen;

	memset(&ss, '\0', sizeof ss);
	sa = (struct sockaddr *)&ss;

	switch (af) {
	case AF_INET:
		salen = sizeof(struct sockaddr_in);
		portp = &((struct sockaddr_in *)sa)->sin_port;
		break;
	case AF_INET6:
		salen = sizeof(struct sockaddr_in6);
		portp = &((struct sockaddr_in6 *)sa)->sin6_port;
		break;
	default:
		errno = EPFNOSUPPORT;
		return (-1);
	}
	sa->sa_family = af;
	
	s = socket(af, SOCK_STREAM, 0);
	if (s < 0)
		return (-1);

	*portp = htons(*alport);
	if (*alport < IPPORT_RESERVED - 1) {
		if (bind(s, sa, salen) >= 0)
			return (s);
		if (errno != EADDRINUSE) {
			(void)close(s);
			return (-1);
		}
	}

	*portp = 0;
	sa->sa_family = af;
	if (bindresvport_sa(s, sa) == -1) {
		(void)close(s);
		return (-1);
	}
	*alport = ntohs(*portp);
	return (s);
}

#endif /* HAVE_RRESVPORT_AF */
Commit	Line	Data
2c06c99b	1	/* $OpenBSD: rresvport.c,v 1.9 2005/11/10 10:00:17 espie Exp $ */
3c0ef626	2	/*
	3	* Copyright (c) 1995, 1996, 1998 Theo de Raadt. All rights reserved.
	4	* Copyright (c) 1983, 1993, 1994
	5	* The Regents of the University of California. All rights reserved.
	6	*
	7	* Redistribution and use in source and binary forms, with or without
	8	* modification, are permitted provided that the following conditions
	9	* are met:
	10	* 1. Redistributions of source code must retain the above copyright
	11	* notice, this list of conditions and the following disclaimer.
	12	* 2. Redistributions in binary form must reproduce the above copyright
	13	* notice, this list of conditions and the following disclaimer in the
	14	* documentation and/or other materials provided with the distribution.
0fff78ff	15	* 3. Neither the name of the University nor the names of its contributors
3c0ef626	16	* may be used to endorse or promote products derived from this software
	17	* without specific prior written permission.
	18	*
	19	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	20	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	21	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	22	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	23	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	24	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	25	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	26	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	27	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	28	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	29	* SUCH DAMAGE.
	30	*/
	31
2c06c99b	32	/* OPENBSD ORIGINAL: lib/libc/net/rresvport.c */
2c06c99b	33
41b2f314	34	#include "includes.h"
3c0ef626	35
	36	#ifndef HAVE_RRESVPORT_AF
	37
3c0ef626	38	#if 0
3c0ef626	39	int
2c06c99b	40	rresvport(int *alport)
3c0ef626	41	{
	42	return rresvport_af(alport, AF_INET);
	43	}
	44	#endif
	45
2c06c99b	46	int
3c0ef626	47	rresvport_af(int *alport, sa_family_t af)
	48	{
	49	struct sockaddr_storage ss;
	50	struct sockaddr *sa;
	51	u_int16_t *portp;
	52	int s;
	53	socklen_t salen;
	54
	55	memset(&ss, '\0', sizeof ss);
	56	sa = (struct sockaddr *)&ss;
	57
	58	switch (af) {
	59	case AF_INET:
	60	salen = sizeof(struct sockaddr_in);
	61	portp = &((struct sockaddr_in *)sa)->sin_port;
	62	break;
	63	case AF_INET6:
	64	salen = sizeof(struct sockaddr_in6);
	65	portp = &((struct sockaddr_in6 *)sa)->sin6_port;
	66	break;
	67	default:
	68	errno = EPFNOSUPPORT;
	69	return (-1);
	70	}
	71	sa->sa_family = af;
	72
	73	s = socket(af, SOCK_STREAM, 0);
	74	if (s < 0)
	75	return (-1);
	76
	77	portp = htons(alport);
	78	if (*alport < IPPORT_RESERVED - 1) {
	79	if (bind(s, sa, salen) >= 0)
	80	return (s);
	81	if (errno != EADDRINUSE) {
	82	(void)close(s);
	83	return (-1);
	84	}
	85	}
	86
	87	*portp = 0;
	88	sa->sa_family = af;
	89	if (bindresvport_sa(s, sa) == -1) {
	90	(void)close(s);
	91	return (-1);
	92	}
	93	alport = ntohs(portp);
	94	return (s);
	95	}
	96
	97	#endif /* HAVE_RRESVPORT_AF */