mirror of
https://github.com/PowerShell/Win32-OpenSSH.git
synced 2025-10-31 11:44:38 +01:00
109 lines
3.0 KiB
C
109 lines
3.0 KiB
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
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#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 */
|