Rrresvport.c
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上传日期:2007-01-04
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- /*
- * Copyright (c) 1997, 1998, 1999
- * Inferno Nettverk A/S, Norway. 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. The above copyright notice, this list of conditions and the following
- * disclaimer must appear in all copies of the software, derivative works
- * or modified versions, and any portions thereof, aswell as in all
- * supporting documentation.
- * 2. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by
- * Inferno Nettverk A/S, Norway.
- * 3. The name of the author may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
- *
- * Inferno Nettverk A/S requests users of this software to return to
- *
- * Software Distribution Coordinator or sdc@inet.no
- * Inferno Nettverk A/S
- * Oslo Research Park
- * Gaustadal閑n 21
- * N-0349 Oslo
- * Norway
- *
- * any improvements or extensions that they make and grant Inferno Nettverk A/S
- * the rights to redistribute these changes.
- *
- */
- #include "common.h"
- static const char rcsid[] =
- "$Id: Rrresvport.c,v 1.17 1999/09/02 10:41:21 michaels Exp $";
- /*
- * Note that for this function to work the remote socksserver is required
- * to be using the bind extension.
- */
- int
- Rrresvport(port)
- int *port;
- {
- int s;
- struct sockaddr name;
- socklen_t namelen;
- if ((s = rresvport(port)) == -1)
- return -1;
- namelen = sizeof(name);
- if (getsockname(s, &name, &namelen) != 0) {
- close(s);
- return -1;
- }
- /* Rbind() will accept failure at binding socket that is already bound. */
- if (Rbind(s, &name, namelen) != 0) {
- close(s);
- return -1;
- }
- return s;
- }