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 SAFEMEMCPY( (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_pvt_socket(LDAP *ld, int family)
100 ber_socket_t s = socket(family, SOCK_STREAM, 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_pvt_prepare_socket(LDAP *ld, int fd)
115 osip_debug(ld, "ldap_prepare_socket: %d\n",fd,0,0);
120 if ( setsockopt( fd, 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",
135 "ldap_is_socket_ready: error on socket %d: errno: %d (%s)\n", \
138 sock_errstr(errno) ); \
142 * check the socket for errors after select returned.
145 ldap_pvt_is_socket_ready(LDAP *ld, int s)
147 osip_debug(ld, "ldap_is_sock_ready: %d\n",s,0,0);
149 #if defined( notyet ) /* && defined( SO_ERROR ) */
152 int dummy = sizeof(so_errno);
153 if ( getsockopt( s, SOL_SOCKET, SO_ERROR, &so_errno, &dummy ) == -1 ) {
157 ldap_pvt_set_errno(so_errno);
166 struct sockaddr_in sin;
168 int dummy = sizeof(sin);
169 if ( getpeername( s, (struct sockaddr *) &sin, &dummy ) == -1 ) {
170 /* XXX: needs to be replace with ber_stream_read() */
173 ldap_pvt_set_errno( WSAGetLastError() );
186 ldap_pvt_connect(LDAP *ld, ber_socket_t s, struct sockaddr *sin, socklen_t addrlen, int async)
188 struct timeval tv, *opt_tv=NULL;
189 fd_set wfds, *z=NULL;
194 if ( (opt_tv = ld->ld_options.ldo_tm_net) != NULL ) {
195 tv.tv_usec = opt_tv->tv_usec;
196 tv.tv_sec = opt_tv->tv_sec;
199 osip_debug(ld, "ldap_connect_timeout: fd: %d tm: %ld async: %d\n",
200 s, opt_tv ? tv.tv_sec : -1L, async);
202 if ( ldap_pvt_ndelay_on(ld, s) == -1 )
205 if ( connect(s, sin, addrlen) == 0 )
207 if ( ldap_pvt_ndelay_off(ld, s) == -1 )
213 ldap_pvt_set_errno( WSAGetLastError() );
216 if ( errno != EINPROGRESS && errno != EWOULDBLOCK ) {
221 if ( async ) return ( -2 );
232 if ( select(ldap_int_tblsize, z, &wfds,
238 opt_tv ? &tv : NULL) == -1)
242 /* This means the connection failed */
243 if (FD_ISSET(s, &efds))
245 ldap_pvt_set_errno(WSAECONNREFUSED);
246 osip_debug(ld, "ldap_pvt_connect: error on socket %d: "
247 "errno: %d (%s)\n", s, errno, sock_errstr(errno));
251 if ( FD_ISSET(s, &wfds) ) {
252 if ( ldap_pvt_is_socket_ready(ld, s) == -1 )
254 if ( ldap_pvt_ndelay_off(ld, s) == -1 )
258 osip_debug(ld, "ldap_connect_timeout: timed out\n",0,0,0);
259 ldap_pvt_set_errno( ETIMEDOUT );
263 #ifndef HAVE_INET_ATON
265 ldap_pvt_inet_aton( const char *host, struct in_addr *in)
267 unsigned long u = inet_addr( host );
268 if ( u != 0xffffffff || u != (unsigned long) -1 ) {
278 ldap_connect_to_host(LDAP *ld, Sockbuf *sb, const char *host,
279 unsigned long address, int port, int async)
281 struct sockaddr_in sin;
283 ber_socket_t s = AC_SOCKET_INVALID;
284 int rc, i, use_hp = 0;
285 struct hostent *hp, he_buf;
287 char *ha_buf=NULL, *p, *q;
289 osip_debug(ld, "ldap_connect_to_host\n",0,0,0);
292 #ifdef HAVE_GETADDRINFO
294 struct addrinfo hints, *res, *sai;
296 memset( &hints, '\0', sizeof(hints) );
297 hints.ai_family = AF_UNSPEC;
298 hints.ai_socktype = SOCK_STREAM;
300 snprintf(serv, sizeof serv, "%d", ntohs(port));
301 if ( getaddrinfo(host, serv, &hints, &res) ) {
302 osip_debug(ld, "ldap_connect_to_host:getaddrinfo failed\n",0,0,0);
308 s = ldap_pvt_socket( ld, sai->ai_family );
313 switch (sai->ai_family) {
316 char addr[INET6_ADDRSTRLEN];
318 &((struct sockaddr_in6 *)sai->ai_addr)->sin6_addr,
320 osip_debug(ld, "ldap_connect_to_host: Trying %s %s\n",
325 char addr[INET_ADDRSTRLEN];
327 &((struct sockaddr_in *)sai->ai_addr)->sin_addr,
329 osip_debug(ld, "ldap_connect_to_host: Trying %s:%s\n",
333 rc = ldap_pvt_connect(ld, s, sai->ai_addr, sai->ai_addrlen, async);
334 if ( (rc == 0) || (rc == -2) ) {
335 ber_sockbuf_ctrl( sb, LBER_SB_OPT_SET_FD, &s );
338 ldap_pvt_close_socket(ld, s);
339 } while ((sai = sai->ai_next) != NULL);
343 if (! inet_aton( host, &in) ) {
344 rc = ldap_pvt_gethostbyname_a(host, &he_buf, &ha_buf,
345 &hp, &local_h_errno);
347 if ( (rc < 0) || (hp == NULL) ) {
349 ldap_pvt_set_errno( WSAGetLastError() );
351 /* not exactly right, but... */
352 ldap_pvt_set_errno( EHOSTUNREACH );
354 if (ha_buf) LDAP_FREE(ha_buf);
364 for ( i = 0; !use_hp || (hp->h_addr_list[i] != 0); ++i, rc = -1 ) {
366 s = ldap_pvt_socket( ld, AF_INET );
368 /* use_hp ? continue : break; */
372 if ( ldap_pvt_prepare_socket(ld, s) == -1 ) {
373 ldap_pvt_close_socket(ld, s);
374 /* use_hp ? continue : break; */
378 (void)memset((char *)&sin, '\0', sizeof(struct sockaddr_in));
379 sin.sin_family = AF_INET;
381 p = (char *)&sin.sin_addr;
382 q = use_hp ? (char *)hp->h_addr_list[i] : (char *)&address;
383 SAFEMEMCPY(p, q, sizeof(sin.sin_addr) );
385 osip_debug(ld, "ldap_connect_to_host: Trying %s:%d\n",
386 inet_ntoa(sin.sin_addr),ntohs(sin.sin_port),0);
388 rc = ldap_pvt_connect(ld, s, (struct sockaddr *)&sin, sizeof(struct sockaddr_in), async);
390 if ( (rc == 0) || (rc == -2) ) {
391 ber_sockbuf_ctrl( sb, LBER_SB_OPT_SET_FD, &s );
395 ldap_pvt_close_socket(ld, s);
400 if (ha_buf) LDAP_FREE(ha_buf);
404 #if defined( LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND ) || defined( HAVE_TLS ) || defined( HAVE_CYRUS_SASL )
406 ldap_host_connected_to( Sockbuf *sb )
413 /* buffers for gethostbyaddr_r */
414 struct hostent he_buf;
418 #define DO_RETURN(x) if (ha_buf) LDAP_FREE(ha_buf); return (x);
420 (void)memset( (char *)&sa, '\0', sizeof( struct sockaddr ));
423 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
424 if ( getpeername( sd, (struct sockaddr *)&sa, &len ) == -1 ) {
429 * do a reverse lookup on the addr to get the official hostname.
430 * this is necessary for kerberos to work right, since the official
431 * hostname is used as the kerberos instance.
434 switch (sa.sa_family) {
437 addr = (char *) &((struct sockaddr_in6 *)&sa)->sin6_addr;
438 len = sizeof( struct in6_addr );
442 addr = (char *) &((struct sockaddr_in *)&sa)->sin_addr;
443 len = sizeof( struct in_addr );
449 if ((ldap_pvt_gethostbyaddr_a( addr, len,
450 sa.sa_family, &he_buf, &ha_buf,
451 &hp,&local_h_errno ) ==0 ) && (hp != NULL) )
453 if ( hp->h_name != NULL ) {
454 char *host = LDAP_STRDUP( hp->h_name );
463 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND || HAVE_TLS */
470 fd_set si_use_readfds;
471 fd_set si_use_writefds;
476 ldap_mark_select_write( LDAP *ld, Sockbuf *sb )
478 struct selectinfo *sip;
481 sip = (struct selectinfo *)ld->ld_selectinfo;
483 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
484 if ( !FD_ISSET( sd, &sip->si_writefds )) {
485 FD_SET( sd, &sip->si_writefds );
491 ldap_mark_select_read( LDAP *ld, Sockbuf *sb )
493 struct selectinfo *sip;
496 sip = (struct selectinfo *)ld->ld_selectinfo;
498 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
499 if ( !FD_ISSET( sd, &sip->si_readfds )) {
500 FD_SET( sd, &sip->si_readfds );
506 ldap_mark_select_clear( LDAP *ld, Sockbuf *sb )
508 struct selectinfo *sip;
511 sip = (struct selectinfo *)ld->ld_selectinfo;
513 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
514 FD_CLR( sd, &sip->si_writefds );
515 FD_CLR( sd, &sip->si_readfds );
520 ldap_is_write_ready( LDAP *ld, Sockbuf *sb )
522 struct selectinfo *sip;
525 sip = (struct selectinfo *)ld->ld_selectinfo;
527 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
528 return( FD_ISSET( sd, &sip->si_use_writefds ));
533 ldap_is_read_ready( LDAP *ld, Sockbuf *sb )
535 struct selectinfo *sip;
538 sip = (struct selectinfo *)ld->ld_selectinfo;
540 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_FD, &sd );
541 return( FD_ISSET( sd, &sip->si_use_readfds ));
546 ldap_new_select_info( void )
548 struct selectinfo *sip;
550 if (( sip = (struct selectinfo *)LDAP_CALLOC( 1,
551 sizeof( struct selectinfo ))) != NULL ) {
552 FD_ZERO( &sip->si_readfds );
553 FD_ZERO( &sip->si_writefds );
556 return( (void *)sip );
561 ldap_free_select_info( void *sip )
568 ldap_int_ip_init( void )
571 #if defined( HAVE_SYSCONF )
572 tblsize = sysconf( _SC_OPEN_MAX );
573 #elif defined( HAVE_GETDTABLESIZE )
574 tblsize = getdtablesize();
576 tblsize = FD_SETSIZE;
577 #endif /* !USE_SYSCONF */
580 if( tblsize > FD_SETSIZE )
581 tblsize = FD_SETSIZE;
582 #endif /* FD_SETSIZE*/
583 ldap_int_tblsize = tblsize;
588 do_ldap_select( LDAP *ld, struct timeval *timeout )
590 struct selectinfo *sip;
592 Debug( LDAP_DEBUG_TRACE, "do_ldap_select\n", 0, 0, 0 );
594 if ( ldap_int_tblsize == 0 )
597 sip = (struct selectinfo *)ld->ld_selectinfo;
598 sip->si_use_readfds = sip->si_readfds;
599 sip->si_use_writefds = sip->si_writefds;
601 return( select( ldap_int_tblsize,
602 &sip->si_use_readfds, &sip->si_use_writefds,