3 * Copyright 1998-1999 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(ld, 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 *) 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)
100 ber_socket_t s = socket(AF_INET, 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, (char*) &dummy, sizeof(dummy) ) == -1 )
130 "ldap_is_socket_ready: errror on socket %d: errno: %d (%s)\n", \
137 * check the socket for errors after select returned.
140 ldap_pvt_is_socket_ready(LDAP *ld, int s)
142 osip_debug(ld, "ldap_is_sock_ready: %d\n",s,0,0);
144 #if defined( notyet ) /* && defined( SO_ERROR ) */
147 int dummy = sizeof(so_errno);
148 if ( getsockopt( s, SOL_SOCKET, SO_ERROR, &so_errno, &dummy ) == -1 ) {
152 ldap_pvt_set_errno(so_errno);
161 struct sockaddr_in sin;
163 int dummy = sizeof(sin);
164 if ( getpeername( s, (struct sockaddr *) &sin, &dummy ) == -1 ) {
165 /* XXX: needs to be replace with ber_stream_read() */
168 ldap_pvt_set_errno( WSAGetLastError() );
181 ldap_pvt_connect(LDAP *ld, ber_socket_t s, struct sockaddr_in *sin, int async)
183 struct timeval tv, *opt_tv=NULL;
184 fd_set wfds, *z=NULL;
186 if ( (opt_tv = ld->ld_options.ldo_tm_net) != NULL ) {
187 tv.tv_usec = opt_tv->tv_usec;
188 tv.tv_sec = opt_tv->tv_sec;
191 osip_debug(ld, "ldap_connect_timeout: fd: %d tm: %ld async: %d\n",
192 s, opt_tv ? tv.tv_sec : -1L, async);
194 if ( ldap_pvt_ndelay_on(ld, s) == -1 )
197 if ( connect(s, (struct sockaddr *) sin, sizeof(struct sockaddr_in)) == 0 )
199 if ( ldap_pvt_ndelay_off(ld, s) == -1 )
205 ldap_pvt_set_errno( WSAGetLastError() );
208 if ( errno != EINPROGRESS && errno != EWOULDBLOCK ) {
213 if ( async ) return ( -2 );
219 if ( select(ldap_int_tblsize, z, &wfds, z, opt_tv ? &tv : NULL) == -1)
222 if ( FD_ISSET(s, &wfds) ) {
223 if ( ldap_pvt_is_socket_ready(ld, s) == -1 )
225 if ( ldap_pvt_ndelay_off(ld, s) == -1 )
229 osip_debug(ld, "ldap_connect_timeout: timed out\n",0,0,0);
230 ldap_pvt_set_errno( ETIMEDOUT );
234 #ifndef HAVE_INET_ATON
236 ldap_pvt_inet_aton( const char *host, struct in_addr *in)
238 unsigned long u = inet_addr( host );
239 if ( u != 0xffffffff || u != (unsigned long) -1 ) {
249 ldap_connect_to_host(LDAP *ld, Sockbuf *sb, const char *host,
250 unsigned long address, int port, int async)
252 struct sockaddr_in sin;
254 ber_socket_t s = AC_SOCKET_INVALID;
255 int rc, i, use_hp = 0;
256 struct hostent *hp, he_buf;
258 char *ha_buf=NULL, *p, *q;
260 osip_debug(ld, "ldap_connect_to_host\n",0,0,0);
263 if (! inet_aton( host, &in) ) {
264 rc = ldap_pvt_gethostbyname_a(host, &he_buf, &ha_buf,
265 &hp, &local_h_errno);
268 ; /*XXX NO MEMORY? */
270 if ( (rc < 0) || (hp == NULL) ) {
272 ldap_pvt_set_errno( WSAGetLastError() );
274 /* not exactly right, but... */
275 ldap_pvt_set_errno( EHOSTUNREACH );
277 if (ha_buf) LDAP_FREE(ha_buf);
286 for ( i = 0; !use_hp || (hp->h_addr_list[i] != 0); ++i, rc = -1 ) {
288 if ( (s = ldap_pvt_socket( ld )) == -1 )
289 /* use_hp ? continue : break; */
292 if ( ldap_pvt_prepare_socket(ld, s) == -1 ) {
293 ldap_pvt_close_socket(ld, s);
294 /* use_hp ? continue : break; */
298 (void)memset((char *)&sin, 0, sizeof(struct sockaddr_in));
299 sin.sin_family = AF_INET;
301 p = (char *)&sin.sin_addr.s_addr;
302 q = use_hp ? (char *)hp->h_addr_list[i] : (char *)&address;
303 SAFEMEMCPY(p, q, sizeof(p) );
305 osip_debug(ld, "ldap_connect_to_host: Trying %s:%d\n",
306 inet_ntoa(sin.sin_addr),ntohs(sin.sin_port),0);
308 rc = ldap_pvt_connect(ld, s, &sin, async);
310 if ( (rc == 0) || (rc == -2) ) {
311 ber_pvt_sb_set_desc( sb, s );
315 ldap_pvt_close_socket(ld, s);
320 if (ha_buf) LDAP_FREE(ha_buf);
325 ldap_close_connection( Sockbuf *sb )
327 ber_pvt_sb_close( sb );
331 #if defined( HAVE_KERBEROS ) || defined( HAVE_TLS )
333 ldap_host_connected_to( Sockbuf *sb )
338 struct sockaddr_in sin;
340 /* buffers for gethostbyaddr_r */
341 struct hostent he_buf;
344 #define DO_RETURN(x) if (ha_buf) LDAP_FREE(ha_buf); return (x);
346 (void)memset( (char *)&sin, 0, sizeof( struct sockaddr_in ));
349 if ( getpeername( ber_pvt_sb_get_desc(sb), (struct sockaddr *)&sin, &len ) == -1 ) {
354 * do a reverse lookup on the addr to get the official hostname.
355 * this is necessary for kerberos to work right, since the official
356 * hostname is used as the kerberos instance.
358 if ((ldap_pvt_gethostbyaddr_a( (char *) &sin.sin_addr,
359 sizeof( sin.sin_addr ),
360 AF_INET, &he_buf, &ha_buf,
361 &hp,&local_h_errno ) ==0 ) && (hp != NULL) )
363 if ( hp->h_name != NULL ) {
364 char *host = LDAP_STRDUP( hp->h_name );
373 #endif /* HAVE_KERBEROS || HAVE_TLS */
380 fd_set si_use_readfds;
381 fd_set si_use_writefds;
386 ldap_mark_select_write( LDAP *ld, Sockbuf *sb )
388 struct selectinfo *sip;
390 sip = (struct selectinfo *)ld->ld_selectinfo;
392 if ( !FD_ISSET( ber_pvt_sb_get_desc(sb), &sip->si_writefds )) {
393 FD_SET( (u_int) sb->sb_sd, &sip->si_writefds );
399 ldap_mark_select_read( LDAP *ld, Sockbuf *sb )
401 struct selectinfo *sip;
403 sip = (struct selectinfo *)ld->ld_selectinfo;
405 if ( !FD_ISSET( ber_pvt_sb_get_desc(sb), &sip->si_readfds )) {
406 FD_SET( (u_int) sb->sb_sd, &sip->si_readfds );
412 ldap_mark_select_clear( LDAP *ld, Sockbuf *sb )
414 struct selectinfo *sip;
416 sip = (struct selectinfo *)ld->ld_selectinfo;
418 FD_CLR( (u_int) ber_pvt_sb_get_desc(sb), &sip->si_writefds );
419 FD_CLR( (u_int) ber_pvt_sb_get_desc(sb), &sip->si_readfds );
424 ldap_is_write_ready( LDAP *ld, Sockbuf *sb )
426 struct selectinfo *sip;
428 sip = (struct selectinfo *)ld->ld_selectinfo;
430 return( FD_ISSET( ber_pvt_sb_get_desc(sb), &sip->si_use_writefds ));
435 ldap_is_read_ready( LDAP *ld, Sockbuf *sb )
437 struct selectinfo *sip;
439 sip = (struct selectinfo *)ld->ld_selectinfo;
441 return( FD_ISSET( ber_pvt_sb_get_desc(sb), &sip->si_use_readfds ));
446 ldap_new_select_info( void )
448 struct selectinfo *sip;
450 if (( sip = (struct selectinfo *)LDAP_CALLOC( 1,
451 sizeof( struct selectinfo ))) != NULL ) {
452 FD_ZERO( &sip->si_readfds );
453 FD_ZERO( &sip->si_writefds );
456 return( (void *)sip );
461 ldap_free_select_info( void *sip )
468 ldap_int_ip_init( void )
471 #if defined( HAVE_SYSCONF )
472 tblsize = sysconf( _SC_OPEN_MAX );
473 #elif defined( HAVE_GETDTABLESIZE )
474 tblsize = getdtablesize();
476 tblsize = FD_SETSIZE;
477 #endif /* !USE_SYSCONF */
480 if( tblsize > FD_SETSIZE )
481 tblsize = FD_SETSIZE;
482 #endif /* FD_SETSIZE*/
483 ldap_int_tblsize = tblsize;
488 do_ldap_select( LDAP *ld, struct timeval *timeout )
490 struct selectinfo *sip;
492 Debug( LDAP_DEBUG_TRACE, "do_ldap_select\n", 0, 0, 0 );
494 if ( ldap_int_tblsize == 0 )
497 sip = (struct selectinfo *)ld->ld_selectinfo;
498 sip->si_use_readfds = sip->si_readfds;
499 sip->si_use_writefds = sip->si_writefds;
501 return( select( ldap_int_tblsize,
502 &sip->si_use_readfds, &sip->si_use_writefds,