Rgetsockname.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: Rgetsockname.c,v 1.31 1999/09/02 10:41:20 michaels Exp $";
- int
- Rgetsockname(s, name, namelen)
- int s;
- struct sockaddr *name;
- socklen_t *namelen;
- {
- const char *function = "Rgetsockname()";
- struct socksfd_t *socksfd;
- struct sockaddr *addr;
- if (!socks_addrisok((unsigned int)s)) {
- socks_rmaddr((unsigned int)s);
- return getsockname(s, name, namelen);
- }
- socksfd = socks_getaddr((unsigned int)s);
- SASSERTX(socksfd != NULL);
- switch (socksfd->state.command) {
- case SOCKS_CONNECT:
- if (socksfd->state.inprogress) {
- if (socksfd->state.err != 0) /* connect failed. */
- errno = socksfd->state.err;
- else
- errno = EINPROGRESS;
- return -1;
- }
- addr = &socksfd->remote;
- /* LINTED pointer casts may be troublesome */
- if (!ADDRISBOUND(addr)) {
- SWARNX(0);
- errno = EADDRNOTAVAIL;
- return -1;
- }
- break;
- case SOCKS_BIND:
- addr = &socksfd->remote;
- break;
- case SOCKS_UDPASSOCIATE:
- swarnx("%s: getsockname() on udp sockets is not supported,n"
- "contact Inferno Nettverk A/S for more information", function);
- /*
- * some clients might call this for no good reason, try to
- * help them by returning a invalid address; if they are
- * going to use it for anything, they will fail later though.
- */
- addr = &socksfd->remote;
- /* LINTED pointer casts may be troublesome */
- ((struct sockaddr_in *)addr)->sin_family = AF_INET;
- /* LINTED pointer casts may be troublesome */
- ((struct sockaddr_in *)addr)->sin_addr.s_addr = htonl(INADDR_ANY);
- /* LINTED pointer casts may be troublesome */
- ((struct sockaddr_in *)addr)->sin_port = htons(0);
- break;
- default:
- SERRX(socksfd->state.command);
- }
- *namelen = MIN(*namelen, sizeof(*addr));
- memcpy(name, addr, (size_t)*namelen);
- return 0;
- }