3 * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
4 * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
7 * Copyright (c) 1995 Regents of the University of Michigan.
10 * os-ip.c -- platform-specific TCP & UDP related code
17 #include <ac/stdlib.h>
20 #include <ac/socket.h>
21 #include <ac/string.h>
23 #include <ac/unistd.h>
27 #endif /* HAVE_IO_H */
31 int ldap_int_tblsize = 0;
34 * nonblock connect code
35 * written by Lars Uffmann, <lars.uffmann@mediaway.net>.
37 * Copyright 1999, Lars Uffmann, All rights reserved.
38 * This software is not subject to any license of my employer
41 * OpenLDAP COPYING RESTRICTIONS APPLY, see COPYRIGHT file
43 * Read about the rationale in ldap_connect_timeout:
44 * ftp://koobera.math.uic.edu/www/docs/connect.html.
47 #define osip_debug(ld,fmt,arg1,arg2,arg3) \
49 ldap_log_printf(NULL, LDAP_DEBUG_TRACE, fmt, arg1, arg2, arg3); \
53 ldap_pvt_set_errno(int err)
59 ldap_int_timeval_dup( struct timeval **dest, const struct timeval *src )
63 assert( dest != NULL );
70 new = (struct timeval *) LDAP_MALLOC(sizeof(struct timeval));
77 AC_MEMCPY( (char *) new, (const char *) src, sizeof(struct timeval));
84 ldap_pvt_ndelay_on(LDAP *ld, int fd)
86 osip_debug(ld, "ldap_ndelay_on: %d\n",fd,0,0);
87 return ber_pvt_socket_set_nonblock( fd, 1 );
91 ldap_pvt_ndelay_off(LDAP *ld, int fd)
93 osip_debug(ld, "ldap_ndelay_off: %d\n",fd,0,0);
94 return ber_pvt_socket_set_nonblock( fd, 0 );
98 ldap_int_socket(LDAP *ld, int family, int type )
100 ber_socket_t s = socket(family, type, 0);
101 osip_debug(ld, "ldap_new_socket: %d\n",s,0,0);
106 ldap_pvt_close_socket(LDAP *ld, int s)
108 osip_debug(ld, "ldap_close_socket: %d\n",s,0,0);
113 ldap_int_prepare_socket(LDAP *ld, int s, int proto )
115 osip_debug(ld, "ldap_prepare_socket: %d\n", s,0,0);
118 if( proto == LDAP_PROTO_TCP ) {
120 if ( setsockopt( s, IPPROTO_TCP, TCP_NODELAY,
121 (char*) &dummy, sizeof(dummy) ) == AC_SOCKET_ERROR )
123 osip_debug(ld, "ldap_prepare_socket: "
124 "setsockopt(%d, TCP_NODELAY) failed (ignored).\n",
136 "ldap_is_socket_ready: error on socket %d: errno: %d (%s)\n", \
139 sock_errstr(errno) ); \
143 * check the socket for errors after select returned.
146 ldap_pvt_is_socket_ready(LDAP *ld, int s)
148 osip_debug(ld, "ldap_is_sock_ready: %d\n",s,0,0);
150 #if defined( notyet ) /* && defined( SO_ERROR ) */
153 int dummy = sizeof(so_errno);
154 if ( getsockopt( s, SOL_SOCKET, SO_ERROR, &so_errno, &dummy ) == -1 ) {
158 ldap_pvt_set_errno(so_errno);
167 struct sockaddr_in sin;
169 int dummy = sizeof(sin);
170 if ( getpeername( s, (struct sockaddr *) &sin, &dummy ) == -1 ) {
171 /* XXX: needs to be replace with ber_stream_read() */
174 ldap_pvt_set_errno( WSAGetLastError() );
187 ldap_pvt_connect(LDAP *ld, ber_socket_t s,
188 struct sockaddr *sin, socklen_t addrlen,
191 struct timeval tv, *opt_tv=NULL;
192 fd_set wfds, *z=NULL;
197 if ( (opt_tv = ld->ld_options.ldo_tm_net) != NULL ) {
198 tv.tv_usec = opt_tv->tv_usec;
199 tv.tv_sec = opt_tv->tv_sec;
202 osip_debug(ld, "ldap_connect_timeout: fd: %d tm: %ld async: %d\n",
203 s, opt_tv ? tv.tv_sec : -1L, async);
205 if ( ldap_pvt_ndelay_on(ld, s) == -1 )
208 if ( connect(s, sin, addrlen) == 0 )
210 if ( ldap_pvt_ndelay_off(ld, s) == -1 )
216 ldap_pvt_set_errno( WSAGetLastError() );
219 if ( errno != EINPROGRESS && errno != EWOULDBLOCK ) {
224 if ( async ) return ( -2 );
235 if ( select(ldap_int_tblsize, z, &wfds,
241 opt_tv ? &tv : NULL) == -1)
245 /* This means the connection failed */
246 if (FD_ISSET(s, &efds))
248 ldap_pvt_set_errno(WSAECONNREFUSED);
249 osip_debug(ld, "ldap_pvt_connect: error on socket %d: "
250 "errno: %d (%s)\n", s, errno, sock_errstr(errno));
254 if ( FD_ISSET(s, &wfds) ) {
255 if ( ldap_pvt_is_socket_ready(ld, s) == -1 )
257 if ( ldap_pvt_ndelay_off(ld, s) == -1 )
261 osip_debug(ld, "ldap_connect_timeout: timed out\n",0,0,0);
262 ldap_pvt_set_errno( ETIMEDOUT );
266 #ifndef HAVE_INET_ATON
268 ldap_pvt_inet_aton( const char *host, struct in_addr *in)
270 unsigned long u = inet_addr( host );
271 if ( u != 0xffffffff || u != (unsigned long) -1 ) {
281 ldap_connect_to_host(LDAP *ld, Sockbuf *sb,
284 unsigned long address, int port, int async)
286 struct sockaddr_in sin;
288 ber_socket_t s = AC_SOCKET_INVALID;
289 int rc, i, use_hp = 0;
290 struct hostent *hp, he_buf;
292 char *ha_buf=NULL, *p, *q;
294 osip_debug(ld, "ldap_connect_to_host\n",0,0,0);
297 #ifdef HAVE_GETADDRINFO
299 struct addrinfo hints, *res, *sai;
301 memset( &hints, '\0', sizeof(hints) );
302 hints.ai_family = AF_UNSPEC;
303 hints.ai_socktype = SOCK_STREAM;
305 snprintf(serv, sizeof serv, "%d", ntohs(port));
306 if ( getaddrinfo(host, serv, &hints, &res) ) {
307 osip_debug(ld, "ldap_connect_to_host:getaddrinfo failed\n",0,0,0);
313 /* we assume AF_x and PF_x are equal for all x */
314 s = ldap_int_socket( ld, sai->ai_family, SOCK_STREAM );
319 if ( ldap_int_prepare_socket(ld, s, proto ) == -1 ) {
320 ldap_pvt_close_socket(ld, s);
324 switch (sai->ai_family) {
327 char addr[INET6_ADDRSTRLEN];
329 &((struct sockaddr_in6 *)sai->ai_addr)->sin6_addr,
331 osip_debug(ld, "ldap_connect_to_host: Trying %s %s\n",
336 char addr[INET_ADDRSTRLEN];
338 &((struct sockaddr_in *)sai->ai_addr)->sin_addr,
340 osip_debug(ld, "ldap_connect_to_host: Trying %s:%s\n",
345 rc = ldap_pvt_connect(ld, s, sai->ai_addr, sai->ai_addrlen, async);
346 if ( (rc == 0) || (rc == -2) ) {
347 ber_sockbuf_ctrl( sb, LBER_SB_OPT_SET_FD, &s );
350 ldap_pvt_close_socket(ld, s);
351 } while ((sai = sai->ai_next) != NULL);
355 if (! inet_aton( host, &in) ) {
356 rc = ldap_pvt_gethostbyname_a(host, &he_buf, &ha_buf,
357 &hp, &local_h_errno);
359 if ( (rc < 0) || (hp == NULL) ) {
361 ldap_pvt_set_errno( WSAGetLastError() );
363 /* not exactly right, but... */
364 ldap_pvt_set_errno( EHOSTUNREACH );
366 if (ha_buf) LDAP_FREE(ha_buf);
376 for ( i = 0; !use_hp || (hp->h_addr_list[i] != 0); ++i, rc = -1 ) {
378 s = ldap_int_socket( ld, PF_INET, SOCK_STREAM );
380 /* use_hp ? continue : break; */
384 if ( ldap_int_prepare_socket( ld, s, proto ) == -1 ) {
385 ldap_pvt_close_socket(ld, s);
389 (void)memset((char *)&sin, '\0', sizeof(struct sockaddr_in));
390 sin.sin_family = AF_INET;
392 p = (char *)&sin.sin_addr;
393 q = use_hp ? (char *)hp->h_addr_list[i] : (char *)&address;
394 AC_MEMCPY(p, q, sizeof(sin.sin_addr) );
396 osip_debug(ld, "ldap_connect_to_host: Trying %s:%d\n",
397 inet_ntoa(sin.sin_addr),ntohs(sin.sin_port),0);
399 rc = ldap_pvt_connect(ld, s,
400 (struct sockaddr *)&sin, sizeof(struct sockaddr_in),
403 if ( (rc == 0) || (rc == -2) ) {
404 ber_sockbuf_ctrl( sb, LBER_SB_OPT_SET_FD, &s );
408 ldap_pvt_close_socket(ld, s);
413 if (ha_buf) LDAP_FREE(ha_buf);
417 #if defined( LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND ) \
418 || defined( HAVE_TLS ) || defined( HAVE_CYRUS_SASL )
420 ldap_host_connected_to( Sockbuf *sb )
428 /* buffers for gethostbyaddr_r */
429 struct hostent he_buf;
434 (void)memset( (char *)&sa, '\0', sizeof( struct sockaddr ));
437 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
438 if ( getpeername( sd, &sa, &len ) == -1 ) {
443 * do a reverse lookup on the addr to get the official hostname.
444 * this is necessary for kerberos to work right, since the official
445 * hostname is used as the kerberos instance.
448 switch (sa.sa_family) {
451 return LDAP_STRDUP( ldap_int_hostname );
455 addr = (char *) &((struct sockaddr_in6 *)&sa)->sin6_addr;
456 len = sizeof( struct in6_addr );
460 addr = (char *) &((struct sockaddr_in *)&sa)->sin_addr;
461 len = sizeof( struct in_addr );
464 struct sockaddr_in localhost;
465 localhost.sin_addr.s_addr = htonl( INADDR_ANY );
467 if( memcmp ( &localhost.sin_addr,
468 &((struct sockaddr_in *)&sa)->sin_addr,
469 sizeof(localhost.sin_addr) ) == 0 )
471 return LDAP_STRDUP( ldap_int_hostname );
474 #ifdef INADDR_LOOPBACK
475 localhost.sin_addr.s_addr = htonl( INADDR_LOOPBACK );
477 if( memcmp ( &localhost.sin_addr,
478 &((struct sockaddr_in *)&sa)->sin_addr,
479 sizeof(localhost.sin_addr) ) == 0 )
481 return LDAP_STRDUP( ldap_int_hostname );
493 if ((ldap_pvt_gethostbyaddr_a( addr, len,
494 sa.sa_family, &he_buf, &ha_buf,
495 &hp,&local_h_errno ) == 0 ) &&
496 (hp != NULL) && ( hp->h_name != NULL ) )
498 host = LDAP_STRDUP( hp->h_name );
504 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND || HAVE_TLS */
511 fd_set si_use_readfds;
512 fd_set si_use_writefds;
517 ldap_mark_select_write( LDAP *ld, Sockbuf *sb )
519 struct selectinfo *sip;
522 sip = (struct selectinfo *)ld->ld_selectinfo;
524 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
525 if ( !FD_ISSET( sd, &sip->si_writefds )) {
526 FD_SET( sd, &sip->si_writefds );
532 ldap_mark_select_read( LDAP *ld, Sockbuf *sb )
534 struct selectinfo *sip;
537 sip = (struct selectinfo *)ld->ld_selectinfo;
539 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
540 if ( !FD_ISSET( sd, &sip->si_readfds )) {
541 FD_SET( sd, &sip->si_readfds );
547 ldap_mark_select_clear( LDAP *ld, Sockbuf *sb )
549 struct selectinfo *sip;
552 sip = (struct selectinfo *)ld->ld_selectinfo;
554 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
555 FD_CLR( sd, &sip->si_writefds );
556 FD_CLR( sd, &sip->si_readfds );
561 ldap_is_write_ready( LDAP *ld, Sockbuf *sb )
563 struct selectinfo *sip;
566 sip = (struct selectinfo *)ld->ld_selectinfo;
568 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
569 return( FD_ISSET( sd, &sip->si_use_writefds ));
574 ldap_is_read_ready( LDAP *ld, Sockbuf *sb )
576 struct selectinfo *sip;
579 sip = (struct selectinfo *)ld->ld_selectinfo;
581 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
582 return( FD_ISSET( sd, &sip->si_use_readfds ));
587 ldap_new_select_info( void )
589 struct selectinfo *sip;
591 if (( sip = (struct selectinfo *)LDAP_CALLOC( 1,
592 sizeof( struct selectinfo ))) != NULL ) {
593 FD_ZERO( &sip->si_readfds );
594 FD_ZERO( &sip->si_writefds );
597 return( (void *)sip );
602 ldap_free_select_info( void *sip )
609 ldap_int_ip_init( void )
612 #if defined( HAVE_SYSCONF )
613 tblsize = sysconf( _SC_OPEN_MAX );
614 #elif defined( HAVE_GETDTABLESIZE )
615 tblsize = getdtablesize();
617 tblsize = FD_SETSIZE;
618 #endif /* !USE_SYSCONF */
621 if( tblsize > FD_SETSIZE )
622 tblsize = FD_SETSIZE;
623 #endif /* FD_SETSIZE*/
624 ldap_int_tblsize = tblsize;
629 do_ldap_select( LDAP *ld, struct timeval *timeout )
631 struct selectinfo *sip;
633 Debug( LDAP_DEBUG_TRACE, "do_ldap_select\n", 0, 0, 0 );
635 if ( ldap_int_tblsize == 0 )
638 sip = (struct selectinfo *)ld->ld_selectinfo;
639 sip->si_use_readfds = sip->si_readfds;
640 sip->si_use_writefds = sip->si_writefds;
642 return( select( ldap_int_tblsize,
643 &sip->si_use_readfds, &sip->si_use_writefds,