1 /* os-ip.c -- platform-specific TCP & UDP related code */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1998-2012 The OpenLDAP Foundation.
6 * Portions Copyright 1999 Lars Uffmann.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted only as authorized by the OpenLDAP
13 * A copy of this license is available in the file LICENSE in the
14 * top-level directory of the distribution or, alternatively, at
15 * <http://www.OpenLDAP.org/license.html>.
17 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
18 * All rights reserved.
20 /* Significant additional contributors include:
28 #include <ac/stdlib.h>
31 #include <ac/socket.h>
32 #include <ac/string.h>
34 #include <ac/unistd.h>
38 #endif /* HAVE_IO_H */
45 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
47 int ldap_int_inet4or6 = AF_UNSPEC;
49 int ldap_int_inet4or6 = AF_INET;
55 #define osip_debug(ld,fmt,arg1,arg2,arg3) \
57 ldap_log_printf(NULL, LDAP_DEBUG_TRACE, fmt, arg1, arg2, arg3); \
62 #define osip_debug(ld,fmt,arg1,arg2,arg3) ((void)0)
64 #endif /* LDAP_DEBUG */
67 ldap_pvt_set_errno(int err)
73 ldap_int_timeval_dup( struct timeval **dest, const struct timeval *src )
77 assert( dest != NULL );
84 new = (struct timeval *) LDAP_MALLOC(sizeof(struct timeval));
91 AC_MEMCPY( (char *) new, (const char *) src, sizeof(struct timeval));
98 ldap_pvt_ndelay_on(LDAP *ld, int fd)
100 osip_debug(ld, "ldap_ndelay_on: %d\n",fd,0,0);
101 return ber_pvt_socket_set_nonblock( fd, 1 );
105 ldap_pvt_ndelay_off(LDAP *ld, int fd)
107 osip_debug(ld, "ldap_ndelay_off: %d\n",fd,0,0);
108 return ber_pvt_socket_set_nonblock( fd, 0 );
112 ldap_int_socket(LDAP *ld, int family, int type )
114 ber_socket_t s = socket(family, type, 0);
115 osip_debug(ld, "ldap_new_socket: %d\n",s,0,0);
117 fcntl(s, F_SETFD, FD_CLOEXEC);
123 ldap_pvt_close_socket(LDAP *ld, int s)
125 osip_debug(ld, "ldap_close_socket: %d\n",s,0,0);
130 ldap_int_prepare_socket(LDAP *ld, int s, int proto )
132 osip_debug( ld, "ldap_prepare_socket: %d\n", s, 0, 0 );
134 #if defined( SO_KEEPALIVE ) || defined( TCP_NODELAY )
135 if ( proto == LDAP_PROTO_TCP ) {
138 if ( setsockopt( s, SOL_SOCKET, SO_KEEPALIVE,
139 (char*) &dummy, sizeof(dummy) ) == AC_SOCKET_ERROR )
141 osip_debug( ld, "ldap_prepare_socket: "
142 "setsockopt(%d, SO_KEEPALIVE) failed (ignored).\n",
145 if ( ld->ld_options.ldo_keepalive_idle > 0 )
148 if ( setsockopt( s, IPPROTO_TCP, TCP_KEEPIDLE,
149 (void*) &ld->ld_options.ldo_keepalive_idle,
150 sizeof(ld->ld_options.ldo_keepalive_idle) ) == AC_SOCKET_ERROR )
152 osip_debug( ld, "ldap_prepare_socket: "
153 "setsockopt(%d, TCP_KEEPIDLE) failed (ignored).\n",
157 osip_debug( ld, "ldap_prepare_socket: "
158 "sockopt TCP_KEEPIDLE not supported on this system.\n",
160 #endif /* TCP_KEEPIDLE */
162 if ( ld->ld_options.ldo_keepalive_probes > 0 )
165 if ( setsockopt( s, IPPROTO_TCP, TCP_KEEPCNT,
166 (void*) &ld->ld_options.ldo_keepalive_probes,
167 sizeof(ld->ld_options.ldo_keepalive_probes) ) == AC_SOCKET_ERROR )
169 osip_debug( ld, "ldap_prepare_socket: "
170 "setsockopt(%d, TCP_KEEPCNT) failed (ignored).\n",
174 osip_debug( ld, "ldap_prepare_socket: "
175 "sockopt TCP_KEEPCNT not supported on this system.\n",
177 #endif /* TCP_KEEPCNT */
179 if ( ld->ld_options.ldo_keepalive_interval > 0 )
182 if ( setsockopt( s, IPPROTO_TCP, TCP_KEEPINTVL,
183 (void*) &ld->ld_options.ldo_keepalive_interval,
184 sizeof(ld->ld_options.ldo_keepalive_interval) ) == AC_SOCKET_ERROR )
186 osip_debug( ld, "ldap_prepare_socket: "
187 "setsockopt(%d, TCP_KEEPINTVL) failed (ignored).\n",
191 osip_debug( ld, "ldap_prepare_socket: "
192 "sockopt TCP_KEEPINTVL not supported on this system.\n",
194 #endif /* TCP_KEEPINTVL */
196 #endif /* SO_KEEPALIVE */
198 if ( setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
199 (char*) &dummy, sizeof(dummy) ) == AC_SOCKET_ERROR )
201 osip_debug( ld, "ldap_prepare_socket: "
202 "setsockopt(%d, TCP_NODELAY) failed (ignored).\n",
205 #endif /* TCP_NODELAY */
207 #endif /* SO_KEEPALIVE || TCP_NODELAY */
217 "ldap_is_socket_ready: error on socket %d: errno: %d (%s)\n", \
220 sock_errstr(errno) ); \
224 * check the socket for errors after select returned.
227 ldap_pvt_is_socket_ready(LDAP *ld, int s)
229 osip_debug(ld, "ldap_is_sock_ready: %d\n",s,0,0);
231 #if defined( notyet ) /* && defined( SO_ERROR ) */
234 ber_socklen_t dummy = sizeof(so_errno);
235 if ( getsockopt( s, SOL_SOCKET, SO_ERROR, &so_errno, &dummy )
241 ldap_pvt_set_errno(so_errno);
251 struct sockaddr_storage sin;
253 struct sockaddr_in sin;
256 ber_socklen_t dummy = sizeof(sin);
257 if ( getpeername( s, (struct sockaddr *) &sin, &dummy )
260 /* XXX: needs to be replace with ber_stream_read() */
261 (void)read(s, &ch, 1);
272 #endif /* HAVE_WINSOCK */
274 /* NOTE: this is identical to analogous code in os-local.c */
285 osip_debug(ld, "ldap_int_poll: fd: %d tm: %ld\n",
286 s, tvp ? tvp->tv_sec : -1L, 0);
291 int timeout = INFTIM;
292 short event = wr ? POLL_WRITE : POLL_READ;
298 timeout = TV2MILLISEC( tvp );
302 rc = poll( &fd, 1, timeout );
304 } while ( rc == AC_SOCKET_ERROR && errno == EINTR &&
305 LDAP_BOOL_GET( &ld->ld_options, LDAP_BOOL_RESTART ) );
307 if ( rc == AC_SOCKET_ERROR ) {
311 if ( timeout == 0 && rc == 0 ) {
315 if ( fd.revents & event ) {
316 if ( ldap_pvt_is_socket_ready( ld, s ) == -1 ) {
320 if ( ldap_pvt_ndelay_off( ld, s ) == -1 ) {
328 fd_set wfds, *z = NULL;
332 struct timeval tv = { 0 };
334 #if defined( FD_SETSIZE ) && !defined( HAVE_WINSOCK )
335 if ( s >= FD_SETSIZE ) {
336 rc = AC_SOCKET_ERROR;
338 ldap_pvt_set_errno( EMFILE );
356 rc = select( ldap_int_tblsize, z, &wfds,
363 } while ( rc == AC_SOCKET_ERROR && errno == EINTR &&
364 LDAP_BOOL_GET( &ld->ld_options, LDAP_BOOL_RESTART ) );
366 if ( rc == AC_SOCKET_ERROR ) {
370 if ( rc == 0 && tvp && tvp->tv_sec == 0 && tvp->tv_usec == 0 ) {
375 /* This means the connection failed */
376 if ( FD_ISSET(s, &efds) ) {
378 ber_socklen_t dummy = sizeof(so_errno);
379 if ( getsockopt( s, SOL_SOCKET, SO_ERROR,
380 (char *) &so_errno, &dummy ) == AC_SOCKET_ERROR || !so_errno )
383 so_errno = WSAGetLastError();
385 ldap_pvt_set_errno( so_errno );
386 osip_debug(ld, "ldap_int_poll: error on socket %d: "
387 "errno: %d (%s)\n", s, errno, sock_errstr( errno ));
391 if ( FD_ISSET(s, &wfds) ) {
393 if ( ldap_pvt_is_socket_ready( ld, s ) == -1 ) {
397 if ( ldap_pvt_ndelay_off(ld, s) == -1 ) {
405 osip_debug(ld, "ldap_int_poll: timed out\n",0,0,0);
406 ldap_pvt_set_errno( ETIMEDOUT );
411 ldap_pvt_connect(LDAP *ld, ber_socket_t s,
412 struct sockaddr *sin, ber_socklen_t addrlen,
416 struct timeval tv, *opt_tv = NULL;
418 #ifdef LDAP_CONNECTIONLESS
419 /* We could do a connect() but that would interfere with
420 * attempts to poll a broadcast address
422 if (LDAP_IS_UDP(ld)) {
423 if (ld->ld_options.ldo_peer)
424 ldap_memfree(ld->ld_options.ldo_peer);
425 ld->ld_options.ldo_peer=ldap_memalloc(sizeof(struct sockaddr));
426 AC_MEMCPY(ld->ld_options.ldo_peer,sin,sizeof(struct sockaddr));
430 if ( ld->ld_options.ldo_tm_net.tv_sec >= 0 ) {
431 tv = ld->ld_options.ldo_tm_net;
435 osip_debug(ld, "ldap_pvt_connect: fd: %d tm: %ld async: %d\n",
436 s, opt_tv ? tv.tv_sec : -1L, async);
438 if ( opt_tv && ldap_pvt_ndelay_on(ld, s) == -1 )
441 if ( connect(s, sin, addrlen) != AC_SOCKET_ERROR ) {
442 if ( opt_tv && ldap_pvt_ndelay_off(ld, s) == -1 )
448 if ( err != EINPROGRESS && err != EWOULDBLOCK ) {
453 /* caller will call ldap_int_poll() as appropriate? */
457 rc = ldap_int_poll( ld, s, opt_tv, 1 );
459 osip_debug(ld, "ldap_pvt_connect: %d\n", rc, 0, 0);
464 #ifndef HAVE_INET_ATON
466 ldap_pvt_inet_aton( const char *host, struct in_addr *in)
468 unsigned long u = inet_addr( host );
471 if ( u == INADDR_NONE ) return 0;
473 if ( u == 0xffffffffUL || u == (unsigned long) -1L ) return 0;
481 ldap_int_connect_cbs(LDAP *ld, Sockbuf *sb, ber_socket_t *s, LDAPURLDesc *srv, struct sockaddr *addr)
483 struct ldapoptions *lo;
488 ber_sockbuf_ctrl( sb, LBER_SB_OPT_SET_FD, s );
490 /* Invoke all handle-specific callbacks first */
491 lo = &ld->ld_options;
492 for (ll = lo->ldo_conn_cbs; ll; ll = ll->ll_next) {
494 rc = cb->lc_add( ld, sb, srv, addr, cb );
495 /* on any failure, call the teardown functions for anything
496 * that previously succeeded
500 for (l2 = lo->ldo_conn_cbs; l2 != ll; l2 = l2->ll_next) {
502 cb->lc_del( ld, sb, cb );
504 /* a failure might have implicitly closed the fd */
505 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, s );
509 lo = LDAP_INT_GLOBAL_OPT();
510 for (ll = lo->ldo_conn_cbs; ll; ll = ll->ll_next) {
512 rc = cb->lc_add( ld, sb, srv, addr, cb );
515 for (l2 = lo->ldo_conn_cbs; l2 != ll; l2 = l2->ll_next) {
517 cb->lc_del( ld, sb, cb );
519 lo = &ld->ld_options;
520 for (l2 = lo->ldo_conn_cbs; l2; l2 = l2->ll_next) {
522 cb->lc_del( ld, sb, cb );
524 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, s );
532 ldap_connect_to_host(LDAP *ld, Sockbuf *sb,
533 int proto, LDAPURLDesc *srv,
538 ber_socket_t s = AC_SOCKET_INVALID;
541 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
544 struct addrinfo hints, *res, *sai;
548 struct hostent *hp = NULL;
549 struct hostent he_buf;
554 if ( srv->lud_host == NULL || *srv->lud_host == 0 ) {
557 host = srv->lud_host;
560 port = srv->lud_port;
563 if( strcmp(srv->lud_scheme, "ldaps") == 0 ) {
571 case LDAP_PROTO_TCP: socktype = SOCK_STREAM;
573 "ldap_connect_to_host: TCP %s:%d\n",
576 case LDAP_PROTO_UDP: socktype = SOCK_DGRAM;
578 "ldap_connect_to_host: UDP %s:%d\n",
582 osip_debug( ld, "ldap_connect_to_host: unknown proto: %d\n",
587 #if defined( HAVE_GETADDRINFO ) && defined( HAVE_INET_NTOP )
588 memset( &hints, '\0', sizeof(hints) );
589 #ifdef USE_AI_ADDRCONFIG /* FIXME: configure test needed */
590 /* Use AI_ADDRCONFIG only on systems where its known to be needed. */
591 hints.ai_flags = AI_ADDRCONFIG;
593 hints.ai_family = ldap_int_inet4or6;
594 hints.ai_socktype = socktype;
595 snprintf(serv, sizeof serv, "%d", port );
597 /* most getaddrinfo(3) use non-threadsafe resolver libraries */
598 LDAP_MUTEX_LOCK(&ldap_int_resolv_mutex);
600 err = getaddrinfo( host, serv, &hints, &res );
602 LDAP_MUTEX_UNLOCK(&ldap_int_resolv_mutex);
605 osip_debug(ld, "ldap_connect_to_host: getaddrinfo failed: %s\n",
606 AC_GAI_STRERROR(err), 0, 0);
611 for( sai=res; sai != NULL; sai=sai->ai_next) {
612 if( sai->ai_addr == NULL ) {
613 osip_debug(ld, "ldap_connect_to_host: getaddrinfo "
614 "ai_addr is NULL?\n", 0, 0, 0);
618 /* we assume AF_x and PF_x are equal for all x */
619 s = ldap_int_socket( ld, sai->ai_family, socktype );
620 if ( s == AC_SOCKET_INVALID ) {
624 if ( ldap_int_prepare_socket(ld, s, proto ) == -1 ) {
625 ldap_pvt_close_socket(ld, s);
629 switch (sai->ai_family) {
632 char addr[INET6_ADDRSTRLEN];
634 &((struct sockaddr_in6 *)sai->ai_addr)->sin6_addr,
636 osip_debug(ld, "ldap_connect_to_host: Trying %s %s\n",
641 char addr[INET_ADDRSTRLEN];
643 &((struct sockaddr_in *)sai->ai_addr)->sin_addr,
645 osip_debug(ld, "ldap_connect_to_host: Trying %s:%s\n",
650 rc = ldap_pvt_connect( ld, s,
651 sai->ai_addr, sai->ai_addrlen, async );
652 if ( rc == 0 || rc == -2 ) {
653 err = ldap_int_connect_cbs( ld, sb, &s, srv, sai->ai_addr );
659 ldap_pvt_close_socket(ld, s);
664 if (! inet_aton( host, &in ) ) {
666 rc = ldap_pvt_gethostbyname_a( host, &he_buf, &ha_buf,
667 &hp, &local_h_errno );
669 if ( (rc < 0) || (hp == NULL) ) {
671 ldap_pvt_set_errno( WSAGetLastError() );
673 /* not exactly right, but... */
674 ldap_pvt_set_errno( EHOSTUNREACH );
676 if (ha_buf) LDAP_FREE(ha_buf);
684 for ( i = 0; !use_hp || (hp->h_addr_list[i] != 0); ++i, rc = -1 ) {
685 struct sockaddr_in sin;
687 s = ldap_int_socket( ld, PF_INET, socktype );
688 if ( s == AC_SOCKET_INVALID ) {
689 /* use_hp ? continue : break; */
693 if ( ldap_int_prepare_socket( ld, s, proto ) == -1 ) {
694 ldap_pvt_close_socket(ld, s);
698 (void)memset((char *)&sin, '\0', sizeof sin);
699 sin.sin_family = AF_INET;
700 sin.sin_port = htons((unsigned short) port);
703 AC_MEMCPY( &sin.sin_addr, hp->h_addr_list[i],
704 sizeof(sin.sin_addr) );
706 AC_MEMCPY( &sin.sin_addr, &in.s_addr,
707 sizeof(sin.sin_addr) );
710 #ifdef HAVE_INET_NTOA_B
713 char address[INET_ADDR_LEN];
714 inet_ntoa_b(sin.sin_address, address);
715 osip_debug(ld, "ldap_connect_to_host: Trying %s:%d\n",
719 osip_debug(ld, "ldap_connect_to_host: Trying %s:%d\n",
720 inet_ntoa(sin.sin_addr), port, 0);
723 rc = ldap_pvt_connect(ld, s,
724 (struct sockaddr *)&sin, sizeof(sin),
727 if ( (rc == 0) || (rc == -2) ) {
728 int err = ldap_int_connect_cbs( ld, sb, &s, srv, (struct sockaddr *)&sin );
735 ldap_pvt_close_socket(ld, s);
739 if (ha_buf) LDAP_FREE(ha_buf);
745 #if defined( HAVE_CYRUS_SASL )
747 ldap_host_connected_to( Sockbuf *sb, const char *host )
751 struct sockaddr_storage sabuf;
753 struct sockaddr sabuf;
755 struct sockaddr *sa = (struct sockaddr *) &sabuf;
758 (void)memset( (char *)sa, '\0', sizeof sabuf );
761 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
762 if ( getpeername( sd, sa, &len ) == -1 ) {
767 * do a reverse lookup on the addr to get the official hostname.
768 * this is necessary for kerberos to work right, since the official
769 * hostname is used as the kerberos instance.
772 switch (sa->sa_family) {
775 return LDAP_STRDUP( ldap_int_hostname );
780 struct in6_addr localhost = IN6ADDR_LOOPBACK_INIT;
781 if( memcmp ( &((struct sockaddr_in6 *)sa)->sin6_addr,
782 &localhost, sizeof(localhost)) == 0 )
784 return LDAP_STRDUP( ldap_int_hostname );
791 struct in_addr localhost;
792 localhost.s_addr = htonl( INADDR_ANY );
794 if( memcmp ( &((struct sockaddr_in *)sa)->sin_addr,
795 &localhost, sizeof(localhost) ) == 0 )
797 return LDAP_STRDUP( ldap_int_hostname );
800 #ifdef INADDR_LOOPBACK
801 localhost.s_addr = htonl( INADDR_LOOPBACK );
803 if( memcmp ( &((struct sockaddr_in *)sa)->sin_addr,
804 &localhost, sizeof(localhost) ) == 0 )
806 return LDAP_STRDUP( ldap_int_hostname );
820 char hbuf[NI_MAXHOST];
821 #elif defined( MAXHOSTNAMELEN )
822 char hbuf[MAXHOSTNAMELEN];
828 if (ldap_pvt_get_hname( sa, len, hbuf, sizeof(hbuf), &herr ) == 0
831 return LDAP_STRDUP( hbuf );
835 return host ? LDAP_STRDUP( host ) : NULL;
842 /* for UNIX poll(2) */
844 struct pollfd si_fds[FD_SETSIZE];
846 /* for UNIX select(2) */
849 fd_set si_use_readfds;
850 fd_set si_use_writefds;
855 ldap_mark_select_write( LDAP *ld, Sockbuf *sb )
857 struct selectinfo *sip;
860 sip = (struct selectinfo *)ld->ld_selectinfo;
862 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
865 /* for UNIX poll(2) */
869 for(i=0; i < sip->si_maxfd; i++) {
870 if( sip->si_fds[i].fd == sd ) {
871 sip->si_fds[i].events |= POLL_WRITE;
874 if( empty==-1 && sip->si_fds[i].fd == -1 ) {
880 if( sip->si_maxfd >= FD_SETSIZE ) {
884 empty = sip->si_maxfd++;
887 sip->si_fds[empty].fd = sd;
888 sip->si_fds[empty].events = POLL_WRITE;
891 /* for UNIX select(2) */
892 if ( !FD_ISSET( sd, &sip->si_writefds )) {
893 FD_SET( sd, &sip->si_writefds );
900 ldap_mark_select_read( LDAP *ld, Sockbuf *sb )
902 struct selectinfo *sip;
905 sip = (struct selectinfo *)ld->ld_selectinfo;
907 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
910 /* for UNIX poll(2) */
914 for(i=0; i < sip->si_maxfd; i++) {
915 if( sip->si_fds[i].fd == sd ) {
916 sip->si_fds[i].events |= POLL_READ;
919 if( empty==-1 && sip->si_fds[i].fd == -1 ) {
925 if( sip->si_maxfd >= FD_SETSIZE ) {
929 empty = sip->si_maxfd++;
932 sip->si_fds[empty].fd = sd;
933 sip->si_fds[empty].events = POLL_READ;
936 /* for UNIX select(2) */
937 if ( !FD_ISSET( sd, &sip->si_readfds )) {
938 FD_SET( sd, &sip->si_readfds );
945 ldap_mark_select_clear( LDAP *ld, Sockbuf *sb )
947 struct selectinfo *sip;
950 sip = (struct selectinfo *)ld->ld_selectinfo;
952 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
955 /* for UNIX poll(2) */
958 for(i=0; i < sip->si_maxfd; i++) {
959 if( sip->si_fds[i].fd == sd ) {
960 sip->si_fds[i].fd = -1;
965 /* for UNIX select(2) */
966 FD_CLR( sd, &sip->si_writefds );
967 FD_CLR( sd, &sip->si_readfds );
972 ldap_clear_select_write( LDAP *ld, Sockbuf *sb )
974 struct selectinfo *sip;
977 sip = (struct selectinfo *)ld->ld_selectinfo;
979 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
982 /* for UNIX poll(2) */
985 for(i=0; i < sip->si_maxfd; i++) {
986 if( sip->si_fds[i].fd == sd ) {
987 sip->si_fds[i].events &= ~POLL_WRITE;
992 /* for UNIX select(2) */
993 FD_CLR( sd, &sip->si_writefds );
999 ldap_is_write_ready( LDAP *ld, Sockbuf *sb )
1001 struct selectinfo *sip;
1004 sip = (struct selectinfo *)ld->ld_selectinfo;
1006 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
1009 /* for UNIX poll(2) */
1012 for(i=0; i < sip->si_maxfd; i++) {
1013 if( sip->si_fds[i].fd == sd ) {
1014 return sip->si_fds[i].revents & POLL_WRITE;
1021 /* for UNIX select(2) */
1022 return( FD_ISSET( sd, &sip->si_use_writefds ));
1028 ldap_is_read_ready( LDAP *ld, Sockbuf *sb )
1030 struct selectinfo *sip;
1033 sip = (struct selectinfo *)ld->ld_selectinfo;
1035 if (ber_sockbuf_ctrl( sb, LBER_SB_OPT_DATA_READY, NULL ))
1038 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
1041 /* for UNIX poll(2) */
1044 for(i=0; i < sip->si_maxfd; i++) {
1045 if( sip->si_fds[i].fd == sd ) {
1046 return sip->si_fds[i].revents & POLL_READ;
1053 /* for UNIX select(2) */
1054 return( FD_ISSET( sd, &sip->si_use_readfds ));
1060 ldap_new_select_info( void )
1062 struct selectinfo *sip;
1064 sip = (struct selectinfo *)LDAP_CALLOC( 1, sizeof( struct selectinfo ));
1066 if ( sip == NULL ) return NULL;
1069 /* for UNIX poll(2) */
1070 /* sip->si_maxfd=0 */
1072 /* for UNIX select(2) */
1073 FD_ZERO( &sip->si_readfds );
1074 FD_ZERO( &sip->si_writefds );
1077 return( (void *)sip );
1082 ldap_free_select_info( void *sip )
1089 int ldap_int_tblsize = 0;
1092 ldap_int_ip_init( void )
1094 #if defined( HAVE_SYSCONF )
1095 long tblsize = sysconf( _SC_OPEN_MAX );
1096 if( tblsize > INT_MAX ) tblsize = INT_MAX;
1098 #elif defined( HAVE_GETDTABLESIZE )
1099 int tblsize = getdtablesize();
1101 int tblsize = FD_SETSIZE;
1102 #endif /* !USE_SYSCONF */
1105 if( tblsize > FD_SETSIZE ) tblsize = FD_SETSIZE;
1106 #endif /* FD_SETSIZE */
1108 ldap_int_tblsize = tblsize;
1114 ldap_int_select( LDAP *ld, struct timeval *timeout )
1117 struct selectinfo *sip;
1119 Debug( LDAP_DEBUG_TRACE, "ldap_int_select\n", 0, 0, 0 );
1122 if ( ldap_int_tblsize == 0 ) ldap_int_ip_init();
1125 sip = (struct selectinfo *)ld->ld_selectinfo;
1126 assert( sip != NULL );
1130 int to = timeout ? TV2MILLISEC( timeout ) : INFTIM;
1131 rc = poll( sip->si_fds, sip->si_maxfd, to );
1134 sip->si_use_readfds = sip->si_readfds;
1135 sip->si_use_writefds = sip->si_writefds;
1137 rc = select( ldap_int_tblsize,
1138 &sip->si_use_readfds, &sip->si_use_writefds,