mirror of git://anongit.mindrot.org/openssh.git
124 lines
3.1 KiB
C
124 lines
3.1 KiB
C
/* This file has be modified from the original OpenBSD source */
|
|
|
|
/*
|
|
* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
|
|
* unrestricted use provided that this legend is included on all tape
|
|
* media and as a part of the software program in whole or part. Users
|
|
* may copy or modify Sun RPC without charge, but are not authorized
|
|
* to license or distribute it to anyone else except as part of a product or
|
|
* program developed by the user.
|
|
*
|
|
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
|
|
* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
|
|
*
|
|
* Sun RPC is provided with no support and without any obligation on the
|
|
* part of Sun Microsystems, Inc. to assist in its use, correction,
|
|
* modification or enhancement.
|
|
*
|
|
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
|
|
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
|
|
* OR ANY PART THEREOF.
|
|
*
|
|
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
|
|
* or profits or other special, indirect and consequential damages, even if
|
|
* Sun has been advised of the possibility of such damages.
|
|
*
|
|
* Sun Microsystems, Inc.
|
|
* 2550 Garcia Avenue
|
|
* Mountain View, California 94043
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#ifndef HAVE_BINDRESVPORT_SA
|
|
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
static char *rcsid = "$OpenBSD: bindresvport.c,v 1.13 2000/01/26 03:43:21 deraadt Exp $";
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
/*
|
|
* Copyright (c) 1987 by Sun Microsystems, Inc.
|
|
*
|
|
* Portions Copyright(C) 1996, Jason Downs. All rights reserved.
|
|
*/
|
|
|
|
#include "includes.h"
|
|
|
|
#define STARTPORT 600
|
|
#define ENDPORT (IPPORT_RESERVED - 1)
|
|
#define NPORTS (ENDPORT - STARTPORT + 1)
|
|
|
|
/*
|
|
* Bind a socket to a privileged IP port
|
|
*/
|
|
int
|
|
bindresvport_sa(sd, sa)
|
|
int sd;
|
|
struct sockaddr *sa;
|
|
{
|
|
int error, af;
|
|
struct sockaddr_storage myaddr;
|
|
struct sockaddr_in *sin;
|
|
struct sockaddr_in6 *sin6;
|
|
u_int16_t *portp;
|
|
u_int16_t port;
|
|
socklen_t salen;
|
|
int i;
|
|
|
|
if (sa == NULL) {
|
|
memset(&myaddr, 0, sizeof(myaddr));
|
|
sa = (struct sockaddr *)&myaddr;
|
|
|
|
if (getsockname(sd, sa, &salen) == -1)
|
|
return -1; /* errno is correctly set */
|
|
|
|
af = sa->sa_family;
|
|
memset(&myaddr, 0, salen);
|
|
} else
|
|
af = sa->sa_family;
|
|
|
|
if (af == AF_INET) {
|
|
sin = (struct sockaddr_in *)sa;
|
|
salen = sizeof(struct sockaddr_in);
|
|
portp = &sin->sin_port;
|
|
} else if (af == AF_INET6) {
|
|
sin6 = (struct sockaddr_in6 *)sa;
|
|
salen = sizeof(struct sockaddr_in6);
|
|
portp = &sin6->sin6_port;
|
|
} else {
|
|
errno = EPFNOSUPPORT;
|
|
return (-1);
|
|
}
|
|
sa->sa_family = af;
|
|
|
|
port = ntohs(*portp);
|
|
if (port == 0)
|
|
port = (arc4random() % NPORTS) + STARTPORT;
|
|
|
|
/* Avoid warning */
|
|
error = -1;
|
|
|
|
for(i = 0; i < NPORTS; i++) {
|
|
*portp = htons(port);
|
|
|
|
error = bind(sd, sa, salen);
|
|
|
|
/* Terminate on success */
|
|
if (error == 0)
|
|
break;
|
|
|
|
/* Terminate on errors, except "address already in use" */
|
|
if ((error < 0) && !((errno == EADDRINUSE) || (errno == EINVAL)))
|
|
break;
|
|
|
|
port++;
|
|
if (port > ENDPORT)
|
|
port = STARTPORT;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
#endif /* HAVE_BINDRESVPORT_SA */
|