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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*
     23  * Copyright (c) 2001 by Sun Microsystems, Inc.
     24  * All rights reserved.
     25  */
     26 
     27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     28 
     29 #include <sys/types.h>
     30 #include <sys/socket.h>
     31 #include <netinet/tcp.h>
     32 #include <errno.h>
     33 #include <dlfcn.h>
     34 #include <rpcsvc/nis.h>
     35 
     36 #include "ldap_util.h"
     37 
     38 #include "nis_parse_ldap_conf.h"
     39 
     40 /*
     41  * Interpose socket(3SOCKET), so that we can set the connect timeout.
     42  * Obviously, this will affect every socket in the application. However,
     43  * NIS+ (or, rather, RPC) uses TLI, not sockets, so the only sockets
     44  * should be those used by libldap.
     45  */
     46 int
     47 socket(int domain, int type, int protocol) {
     48 	int		ret;
     49 	static int	(*fptr)() = 0;
     50 	int		timeout = 1000 * proxyInfo.bind_timeout.tv_sec +
     51 					proxyInfo.bind_timeout.tv_usec / 1000;
     52 
     53 	if (fptr == 0) {
     54 		fptr = (int (*)())dlsym(RTLD_NEXT, "socket");
     55 		if (fptr == 0) {
     56 			logmsg(MSG_NOTIMECHECK, LOG_ERR,
     57 				"socket: load error: %s",
     58 				dlerror());
     59 			return (-1);
     60 		}
     61 	}
     62 
     63 	ret = (*fptr) (domain, type, protocol);
     64 
     65 	if (ret >= 0 && timeout > 0) {
     66 		if (setsockopt(ret, IPPROTO_TCP, TCP_CONN_ABORT_THRESHOLD,
     67 				&timeout, sizeof (timeout)) != 0)
     68 			logmsg(MSG_NOTIMECHECK, LOG_ERR,
     69 	"setsockopt(IPPROTO_TCP/TCP_CONN_ABORT_THRESHOLD, %d) => errno = %d",
     70 				timeout, errno);
     71 	}
     72 
     73 	return (ret);
     74 }
     75