usr/src/lib/libnisdb/ldap_cto.c

   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 }