X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=libraries%2Flibldap%2Fos-ip.c;h=e300711817129e7e17a89f492271d13e17c53c8f;hb=77b235fba53850c4d498284fb886357c857e92b9;hp=cc358ceefc1803e19e1ebb924eaea38023aecdef;hpb=a9fff6ae9df28b26f8dde5ea6b7df1872e8eee62;p=openldap

diff --git a/libraries/libldap/os-ip.c b/libraries/libldap/os-ip.c
index cc358ceefc..e300711817 100644
--- a/libraries/libldap/os-ip.c
+++ b/libraries/libldap/os-ip.c
@@ -1,203 +1,375 @@
+/* $OpenLDAP$ */
 /*
+ * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
+ * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+ */
+/*  Portions
  *  Copyright (c) 1995 Regents of the University of Michigan.
  *  All rights reserved.
  *
  *  os-ip.c -- platform-specific TCP & UDP related code
  */
 
-#ifndef lint 
-static char copyright[] = "@(#) Copyright (c) 1995 Regents of the University of Michigan.\nAll rights reserved.\n";
-#endif
+#include "portable.h"
 
 #include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
 
-#ifdef _WIN32
-#include <io.h>
-#include "msdos.h"
-#else /* _WIN32 */
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <netdb.h>
-#include <unistd.h>
-#endif /* _WIN32 */
-#ifdef _AIX
-#include <sys/select.h>
-#endif /* _AIX */
-#ifdef VMS
-#include "ucx_select.h"
-#endif /* VMS */
+#include <ac/stdlib.h>
 
-#include "portable.h"
-#include "lber.h"
-#include "ldap.h"
+#include <ac/errno.h>
+#include <ac/socket.h>
+#include <ac/string.h>
+#include <ac/time.h>
+#include <ac/unistd.h>
 
-#ifdef LDAP_REFERRALS
-#ifdef USE_SYSCONF
-#include <unistd.h>
-#endif /* USE_SYSCONF */
-#ifdef notyet
-#ifdef NEED_FILIO
-#include <sys/filio.h>
-#else /* NEED_FILIO */
-#include <sys/ioctl.h>
-#endif /* NEED_FILIO */
-#endif /* notyet */
-#endif /* LDAP_REFERRALS */
-
-#ifdef MACOS
-#define tcp_close( s )		tcpclose( s )
-#else /* MACOS */
-#ifdef DOS
-#ifdef PCNFS
-#define tcp_close( s )		close( s )
-#endif /* PCNFS */
-#ifdef NCSA
-#define tcp_close( s )		netclose( s ); netshut()
-#endif /* NCSA */
-#ifdef WINSOCK
-#define tcp_close( s )		closesocket( s ); WSACleanup();
-#endif /* WINSOCK */
-#else /* DOS */
-#define tcp_close( s )		close( s )
-#endif /* DOS */
-#endif /* MACOS */
+#ifdef HAVE_IO_H
+#include <io.h>
+#endif /* HAVE_IO_H */
 
 #include "ldap-int.h"
 
+int ldap_int_tblsize = 0;
+
+/*
+ * nonblock connect code
+ * written by Lars Uffmann, <lars.uffmann@mediaway.net>.
+ *
+ * Copyright 1999, Lars Uffmann, All rights reserved.
+ * This software is not subject to any license of my employer
+ * mediaWays GmbH.
+ *
+ * OpenLDAP COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+ *
+ * Read about the rationale in ldap_connect_timeout: 
+ * ftp://koobera.math.uic.edu/www/docs/connect.html.
+ */
+
+#define osip_debug(ld,fmt,arg1,arg2,arg3) \
+do { \
+	ldap_log_printf(NULL, LDAP_DEBUG_TRACE, fmt, arg1, arg2, arg3); \
+} while(0)
+
+static void
+ldap_pvt_set_errno(int err)
+{
+	errno = err;
+}
+
 int
-ldap_connect_to_host( Sockbuf *sb, char *host, unsigned long address,
-	int port, int async )
+ldap_int_timeval_dup( struct timeval **dest, const struct timeval *src )
+{
+	struct timeval *new;
+
+	assert( dest != NULL );
+
+	if (src == NULL) {
+		*dest = NULL;
+		return 0;
+	}
+
+	new = (struct timeval *) LDAP_MALLOC(sizeof(struct timeval));
+
+	if( new == NULL ) {
+		*dest = NULL;
+		return 1;
+	}
+
+	SAFEMEMCPY( (char *) new, (const char *) src, sizeof(struct timeval));
+
+	*dest = new;
+	return 0;
+}
+
+static int
+ldap_pvt_ndelay_on(LDAP *ld, int fd)
+{
+	osip_debug(ld, "ldap_ndelay_on: %d\n",fd,0,0);
+	return ber_pvt_socket_set_nonblock( fd, 1 );
+}
+   
+static int
+ldap_pvt_ndelay_off(LDAP *ld, int fd)
+{
+	osip_debug(ld, "ldap_ndelay_off: %d\n",fd,0,0);
+	return ber_pvt_socket_set_nonblock( fd, 0 );
+}
+
+static ber_socket_t
+ldap_pvt_socket(LDAP *ld)
+{
+	ber_socket_t s = socket(AF_INET, SOCK_STREAM, 0);
+	osip_debug(ld, "ldap_new_socket: %d\n",s,0,0);
+	return ( s );
+}
+
+static int
+ldap_pvt_close_socket(LDAP *ld, int s)
+{
+	osip_debug(ld, "ldap_close_socket: %d\n",s,0,0);
+	return tcp_close(s);
+}
+
+static int
+ldap_pvt_prepare_socket(LDAP *ld, int fd)
+{
+	osip_debug(ld, "ldap_prepare_socket: %d\n",fd,0,0);
+
+#ifdef TCP_NODELAY
+{
+	int dummy = 1;
+	if ( setsockopt( fd, IPPROTO_TCP, TCP_NODELAY,
+		(char*) &dummy, sizeof(dummy) ) == AC_SOCKET_ERROR )
+	{
+		osip_debug(ld, "ldap_prepare_socket: "
+			"setsockopt(%d, TCP_NODELAY) failed (ignored).\n",
+			fd, 0, 0);
+	}
+}
+#endif
+	return 0;
+}
+
+#undef TRACE
+#define TRACE do { \
+	osip_debug(ld, \
+		"ldap_is_socket_ready: error on socket %d: errno: %d (%s)\n", \
+		s, \
+		errno, \
+		sock_errstr(errno) ); \
+} while( 0 )
+
 /*
- * if host == NULL, connect using address
- * "address" and "port" must be in network byte order
- * zero is returned upon success, -1 if fatal error, -2 EINPROGRESS
- * async is only used ifdef LDAP_REFERRALS (non-0 means don't wait for connect)
- * XXX async is not used yet!
+ * check the socket for errors after select returned.
  */
+static int
+ldap_pvt_is_socket_ready(LDAP *ld, int s)
 {
-	int			rc, i, s = 0;
-	int			connected, use_hp;
-	struct sockaddr_in	sin;
-	struct hostent		*hp = NULL;
-#ifdef notyet
-#ifdef LDAP_REFERRALS
-	int			status;	/* for ioctl call */
-#endif /* LDAP_REFERRALS */
-#endif /* notyet */
+	osip_debug(ld, "ldap_is_sock_ready: %d\n",s,0,0);
 
-	Debug( LDAP_DEBUG_TRACE, "ldap_connect_to_host: %s:%d\n",
-	    ( host == NULL ) ? "(by address)" : host, ntohs( port ), 0 );
+#if defined( notyet ) /* && defined( SO_ERROR ) */
+{
+	int so_errno;
+	int dummy = sizeof(so_errno);
+	if ( getsockopt( s, SOL_SOCKET, SO_ERROR, &so_errno, &dummy ) == -1 ) {
+		return -1;
+	}
+	if ( so_errno ) {
+		ldap_pvt_set_errno(so_errno);
+		TRACE;
+		return -1;
+	}
+	return 0;
+}
+#else
+{
+	/* error slippery */
+	struct sockaddr_in sin;
+	char ch;
+	int dummy = sizeof(sin);
+	if ( getpeername( s, (struct sockaddr *) &sin, &dummy ) == -1 ) {
+		/* XXX: needs to be replace with ber_stream_read() */
+		read(s, &ch, 1);
+#ifdef HAVE_WINSOCK
+		ldap_pvt_set_errno( WSAGetLastError() );
+#endif
+		TRACE;
+		return -1;
+	}
+	return 0;
+}
+#endif
+	return -1;
+}
+#undef TRACE
 
-	connected = use_hp = 0;
+static int
+ldap_pvt_connect(LDAP *ld, ber_socket_t s, struct sockaddr_in *sin, int async)
+{
+	struct timeval	tv, *opt_tv=NULL;
+	fd_set		wfds, *z=NULL;
+#ifdef HAVE_WINSOCK
+	fd_set		efds;
+#endif
 
-	if ( host != NULL && ( address = inet_addr( host )) == -1 ) {
-		if ( (hp = gethostbyname( host )) == NULL ) {
-			errno = EHOSTUNREACH;	/* not exactly right, but... */
-			return( -1 );
-		}
-		use_hp = 1;
+	if ( (opt_tv = ld->ld_options.ldo_tm_net) != NULL ) {
+		tv.tv_usec = opt_tv->tv_usec;
+		tv.tv_sec = opt_tv->tv_sec;
 	}
 
-	rc = -1;
-	for ( i = 0; !use_hp || ( hp->h_addr_list[ i ] != 0 ); i++ ) {
-		if (( s = socket( AF_INET, SOCK_STREAM, 0 )) < 0 ) {
-			return( -1 );
-		}
-#ifdef notyet
-#ifdef LDAP_REFERRALS
-		status = 1;
-		if ( async && ioctl( s, FIONBIO, (caddr_t)&status ) == -1 ) {
-			Debug( LDAP_DEBUG_ANY, "FIONBIO ioctl failed on %d\n",
-			    s, 0, 0 );
-		}
-#endif /* LDAP_REFERRALS */
-#endif /* notyet */
-		(void)memset( (char *)&sin, 0, sizeof( struct sockaddr_in ));
-		sin.sin_family = AF_INET;
-		sin.sin_port = port;
-		SAFEMEMCPY( (char *) &sin.sin_addr.s_addr,
-		    ( use_hp ? (char *) hp->h_addr_list[ i ] :
-		    (char *) &address ), sizeof( sin.sin_addr.s_addr) );
-
-		if ( connect( s, (struct sockaddr *)&sin,
-		    sizeof( struct sockaddr_in )) >= 0 ) {
-			connected = 1;
-			rc = 0;
-			break;
-		} else {
+	osip_debug(ld, "ldap_connect_timeout: fd: %d tm: %ld async: %d\n",
+			s, opt_tv ? tv.tv_sec : -1L, async);
+
+	if ( ldap_pvt_ndelay_on(ld, s) == -1 )
+		return ( -1 );
+
+	if ( connect(s, (struct sockaddr *) sin, sizeof(struct sockaddr_in)) == 0 )
+	{
+		if ( ldap_pvt_ndelay_off(ld, s) == -1 )
+			return ( -1 );
+		return ( 0 );
+	}
+
+#ifdef HAVE_WINSOCK
+	ldap_pvt_set_errno( WSAGetLastError() );
+#endif
+
+	if ( errno != EINPROGRESS && errno != EWOULDBLOCK ) {
+		return ( -1 );
+	}
+	
 #ifdef notyet
-#ifdef LDAP_REFERRALS
-#ifdef EAGAIN
-			if ( errno == EINPROGRESS || errno == EAGAIN ) {
-#else /* EAGAIN */
-			if ( errno == EINPROGRESS ) {
-#endif /* EAGAIN */
-				Debug( LDAP_DEBUG_TRACE,
-					"connect would block...\n", 0, 0, 0 );
-				rc = -2;
-				break;
-			}
-#endif /* LDAP_REFERRALS */
-#endif /* notyet */
+	if ( async ) return ( -2 );
+#endif
 
-#ifdef LDAP_DEBUG		
-			if ( ldap_debug & LDAP_DEBUG_TRACE ) {
-				perror( (char *)inet_ntoa( sin.sin_addr ));
-			}
+	FD_ZERO(&wfds);
+	FD_SET(s, &wfds );
+
+#ifdef HAVE_WINSOCK
+	FD_ZERO(&efds);
+	FD_SET(s, &efds );
+#endif
+
+	if ( select(ldap_int_tblsize, z, &wfds,
+#ifdef HAVE_WINSOCK
+		    &efds,
+#else
+		    z,
+#endif
+		    opt_tv ? &tv : NULL) == -1)
+		return ( -1 );
+
+#ifdef HAVE_WINSOCK
+	/* This means the connection failed */
+	if (FD_ISSET(s, &efds))
+	{
+	    ldap_pvt_set_errno(WSAECONNREFUSED);
+	    osip_debug(ld, "ldap_pvt_connect: error on socket %d: "
+		       "errno: %d (%s)\n", s, errno, sock_errstr(errno));
+	    return -1;
+	}
+#endif
+	if ( FD_ISSET(s, &wfds) ) {
+		if ( ldap_pvt_is_socket_ready(ld, s) == -1 )
+			return ( -1 );
+		if ( ldap_pvt_ndelay_off(ld, s) == -1 )
+			return ( -1 );
+		return ( 0 );
+	}
+	osip_debug(ld, "ldap_connect_timeout: timed out\n",0,0,0);
+	ldap_pvt_set_errno( ETIMEDOUT );
+	return ( -1 );
+}
+
+#ifndef HAVE_INET_ATON
+int
+ldap_pvt_inet_aton( const char *host, struct in_addr *in)
+{
+	unsigned long u = inet_addr( host );
+	if ( u != 0xffffffff || u != (unsigned long) -1 ) {
+		in->s_addr = u;
+		return 1;
+	}
+	return 0;
+}
+#endif
+
+
+int
+ldap_connect_to_host(LDAP *ld, Sockbuf *sb, const char *host,
+		unsigned long address, int port, int async)
+{
+	struct sockaddr_in	sin;
+	struct in_addr		in;
+	ber_socket_t		s = AC_SOCKET_INVALID;
+	int			rc, i, use_hp = 0;
+	struct hostent		*hp, he_buf;
+   	int			local_h_errno;
+	char   			*ha_buf=NULL, *p, *q;
+
+	osip_debug(ld, "ldap_connect_to_host\n",0,0,0);
+	
+	if (host != NULL) {
+		if (! inet_aton( host, &in) ) {
+			rc = ldap_pvt_gethostbyname_a(host, &he_buf, &ha_buf,
+					&hp, &local_h_errno);
+
+			if ( rc < 0 )
+				; /*XXX NO MEMORY? */
+
+			if ( (rc < 0) || (hp == NULL) ) {
+#ifdef HAVE_WINSOCK
+				ldap_pvt_set_errno( WSAGetLastError() );
+#else
+				/* not exactly right, but... */
+				ldap_pvt_set_errno( EHOSTUNREACH );
 #endif
-			close( s );
-			if ( !use_hp ) {
-				break;
+				if (ha_buf) LDAP_FREE(ha_buf);
+				return -1;
 			}
+			use_hp = 1;
 		}
+		address = in.s_addr;
 	}
 
-	sb->sb_sd = s;
+	rc = s = -1;
+	for ( i = 0; !use_hp || (hp->h_addr_list[i] != 0); ++i, rc = -1 ) {
 
-	if ( connected ) {
-#ifdef notyet
-#ifdef LDAP_REFERRALS
-		status = 0;
-		if ( !async && ioctl( s, FIONBIO, (caddr_t)&on ) == -1 ) {
-			Debug( LDAP_DEBUG_ANY, "FIONBIO ioctl failed on %d\n",
-			    s, 0, 0 );
+		if ( (s = ldap_pvt_socket( ld )) == -1 )
+			/* use_hp ? continue : break; */
+			break;
+	   
+		if ( ldap_pvt_prepare_socket(ld, s) == -1 ) {
+			ldap_pvt_close_socket(ld, s);
+			/* use_hp ? continue : break; */
+			break;
 		}
-#endif /* LDAP_REFERRALS */
-#endif /* notyet */
 
-		Debug( LDAP_DEBUG_TRACE, "sd %d connected to: %s\n",
-		    s, inet_ntoa( sin.sin_addr ), 0 );
-	}
+		(void)memset((char *)&sin, 0, sizeof(struct sockaddr_in));
+		sin.sin_family = AF_INET;
+		sin.sin_port = port;
+		p = (char *)&sin.sin_addr;
+		q = use_hp ? (char *)hp->h_addr_list[i] : (char *)&address;
+		SAFEMEMCPY(p, q, sizeof(sin.sin_addr) );
 
-	return( rc );
-}
+		osip_debug(ld, "ldap_connect_to_host: Trying %s:%d\n", 
+				inet_ntoa(sin.sin_addr),ntohs(sin.sin_port),0);
 
+		rc = ldap_pvt_connect(ld, s, &sin, async);
+   
+		if ( (rc == 0) || (rc == -2) ) {
+			ber_sockbuf_ctrl( sb, LBER_SB_OPT_SET_FD, &s );
+			break;
+		}
 
-void
-ldap_close_connection( Sockbuf *sb )
-{
-    tcp_close( sb->sb_sd );
-}
+		ldap_pvt_close_socket(ld, s);
 
+		if (!use_hp)
+			break;
+	}
+	if (ha_buf) LDAP_FREE(ha_buf);
+	return rc;
+}
 
-#ifdef KERBEROS
+#if defined( LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND ) || defined( HAVE_TLS ) || defined( HAVE_CYRUS_SASL )
 char *
 ldap_host_connected_to( Sockbuf *sb )
 {
 	struct hostent		*hp;
-	char			*p;
-	int			len;
+	socklen_t         	len;
 	struct sockaddr_in	sin;
 
+   	/* buffers for gethostbyaddr_r */
+   	struct hostent		he_buf;
+        int			local_h_errno;
+   	char			*ha_buf=NULL;
+	ber_socket_t		sd;
+#define DO_RETURN(x) if (ha_buf) LDAP_FREE(ha_buf); return (x);
+   
 	(void)memset( (char *)&sin, 0, sizeof( struct sockaddr_in ));
 	len = sizeof( sin );
-	if ( getpeername( sb->sb_sd, (struct sockaddr *)&sin, &len ) == -1 ) {
+
+	ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
+	if ( getpeername( sd, (struct sockaddr *)&sin, &len ) == -1 ) {
 		return( NULL );
 	}
 
@@ -206,19 +378,24 @@ ldap_host_connected_to( Sockbuf *sb )
 	 * this is necessary for kerberos to work right, since the official
 	 * hostname is used as the kerberos instance.
 	 */
-	if (( hp = gethostbyaddr( (char *) &sin.sin_addr,
-	    sizeof( sin.sin_addr ), AF_INET )) != NULL ) {
+	if ((ldap_pvt_gethostbyaddr_a( (char *) &sin.sin_addr,
+		sizeof( sin.sin_addr ), 
+		AF_INET, &he_buf, &ha_buf,
+		&hp,&local_h_errno ) ==0 ) && (hp != NULL) )
+	{
 		if ( hp->h_name != NULL ) {
-			return( strdup( hp->h_name ));
+			char *host = LDAP_STRDUP( hp->h_name );   
+			DO_RETURN( host );
 		}
 	}
 
-	return( NULL );
+	DO_RETURN( NULL );
 }
-#endif /* KERBEROS */
+#undef DO_RETURN   
+   
+#endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND || HAVE_TLS */
 
 
-#ifdef LDAP_REFERRALS
 /* for UNIX */
 struct selectinfo {
 	fd_set	si_readfds;
@@ -232,11 +409,13 @@ void
 ldap_mark_select_write( LDAP *ld, Sockbuf *sb )
 {
 	struct selectinfo	*sip;
+	ber_socket_t		sd;
 
 	sip = (struct selectinfo *)ld->ld_selectinfo;
-
-	if ( !FD_ISSET( sb->sb_sd, &sip->si_writefds )) {
-		FD_SET( sb->sb_sd, &sip->si_writefds );
+	
+	ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
+	if ( !FD_ISSET( sd, &sip->si_writefds )) {
+		FD_SET( sd, &sip->si_writefds );
 	}
 }
 
@@ -245,11 +424,13 @@ void
 ldap_mark_select_read( LDAP *ld, Sockbuf *sb )
 {
 	struct selectinfo	*sip;
+	ber_socket_t		sd;
 
 	sip = (struct selectinfo *)ld->ld_selectinfo;
 
-	if ( !FD_ISSET( sb->sb_sd, &sip->si_readfds )) {
-		FD_SET( sb->sb_sd, &sip->si_readfds );
+	ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
+	if ( !FD_ISSET( sd, &sip->si_readfds )) {
+		FD_SET( sd, &sip->si_readfds );
 	}
 }
 
@@ -258,11 +439,13 @@ void
 ldap_mark_select_clear( LDAP *ld, Sockbuf *sb )
 {
 	struct selectinfo	*sip;
+	ber_socket_t		sd;
 
 	sip = (struct selectinfo *)ld->ld_selectinfo;
 
-	FD_CLR( sb->sb_sd, &sip->si_writefds );
-	FD_CLR( sb->sb_sd, &sip->si_readfds );
+	ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
+	FD_CLR( sd, &sip->si_writefds );
+	FD_CLR( sd, &sip->si_readfds );
 }
 
 
@@ -270,10 +453,12 @@ int
 ldap_is_write_ready( LDAP *ld, Sockbuf *sb )
 {
 	struct selectinfo	*sip;
+	ber_socket_t		sd;
 
 	sip = (struct selectinfo *)ld->ld_selectinfo;
 
-	return( FD_ISSET( sb->sb_sd, &sip->si_use_writefds ));
+	ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
+	return( FD_ISSET( sd, &sip->si_use_writefds ));
 }
 
 
@@ -281,19 +466,21 @@ int
 ldap_is_read_ready( LDAP *ld, Sockbuf *sb )
 {
 	struct selectinfo	*sip;
+	ber_socket_t		sd;
 
 	sip = (struct selectinfo *)ld->ld_selectinfo;
 
-	return( FD_ISSET( sb->sb_sd, &sip->si_use_readfds ));
+	ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
+	return( FD_ISSET( sd, &sip->si_use_readfds ));
 }
 
 
 void *
-ldap_new_select_info()
+ldap_new_select_info( void )
 {
 	struct selectinfo	*sip;
 
-	if (( sip = (struct selectinfo *)calloc( 1,
+	if (( sip = (struct selectinfo *)LDAP_CALLOC( 1,
 	    sizeof( struct selectinfo ))) != NULL ) {
 		FD_ZERO( &sip->si_readfds );
 		FD_ZERO( &sip->si_writefds );
@@ -306,7 +493,27 @@ ldap_new_select_info()
 void
 ldap_free_select_info( void *sip )
 {
-	free( sip );
+	LDAP_FREE( sip );
+}
+
+
+void
+ldap_int_ip_init( void )
+{
+	int tblsize;
+#if defined( HAVE_SYSCONF )
+	tblsize = sysconf( _SC_OPEN_MAX );
+#elif defined( HAVE_GETDTABLESIZE )
+	tblsize = getdtablesize();
+#else
+	tblsize = FD_SETSIZE;
+#endif /* !USE_SYSCONF */
+
+#ifdef FD_SETSIZE
+	if( tblsize > FD_SETSIZE )
+		tblsize = FD_SETSIZE;
+#endif	/* FD_SETSIZE*/
+	ldap_int_tblsize = tblsize;
 }
 
 
@@ -314,29 +521,17 @@ int
 do_ldap_select( LDAP *ld, struct timeval *timeout )
 {
 	struct selectinfo	*sip;
-	static int		tblsize;
 
 	Debug( LDAP_DEBUG_TRACE, "do_ldap_select\n", 0, 0, 0 );
 
-	if ( tblsize == 0 ) {
-#ifdef USE_SYSCONF
-		tblsize = sysconf( _SC_OPEN_MAX );
-#else /* !USE_SYSCONF */
-		tblsize = getdtablesize();
-#endif /* !USE_SYSCONF */
-
-#ifdef FD_SETSIZE
-		if( tblsize > FD_SETSIZE ) {
-			tblsize = FD_SETSIZE;
-		}
-#endif	/* FD_SETSIZE*/
-	}
+	if ( ldap_int_tblsize == 0 )
+		ldap_int_ip_init();
 
 	sip = (struct selectinfo *)ld->ld_selectinfo;
 	sip->si_use_readfds = sip->si_readfds;
 	sip->si_use_writefds = sip->si_writefds;
 	
-	return( select( tblsize, &sip->si_use_readfds, &sip->si_use_writefds,
-	    NULL, timeout ));
+	return( select( ldap_int_tblsize,
+	                &sip->si_use_readfds, &sip->si_use_writefds,
+	                NULL, timeout ));
 }
-#endif /* LDAP_REFERRALS */