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,
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: errror on socket %d: errno: %d (%s)\n", \
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_in *sin, int async)
188 struct timeval tv, *opt_tv=NULL;
189 fd_set wfds, *z=NULL;
191 if ( (opt_tv = ld->ld_options.ldo_tm_net) != NULL ) {
192 tv.tv_usec = opt_tv->tv_usec;
193 tv.tv_sec = opt_tv->tv_sec;
196 osip_debug(ld, "ldap_connect_timeout: fd: %d tm: %ld async: %d\n",
197 s, opt_tv ? tv.tv_sec : -1L, async);
199 if ( ldap_pvt_ndelay_on(ld, s) == -1 )
202 if ( connect(s, (struct sockaddr *) sin, sizeof(struct sockaddr_in)) == 0 )
204 if ( ldap_pvt_ndelay_off(ld, s) == -1 )
210 ldap_pvt_set_errno( WSAGetLastError() );
213 if ( errno != EINPROGRESS && errno != EWOULDBLOCK ) {
218 if ( async ) return ( -2 );
224 if ( select(ldap_int_tblsize, z, &wfds, z, opt_tv ? &tv : NULL) == -1)
227 if ( FD_ISSET(s, &wfds) ) {
228 if ( ldap_pvt_is_socket_ready(ld, s) == -1 )
230 if ( ldap_pvt_ndelay_off(ld, s) == -1 )
234 osip_debug(ld, "ldap_connect_timeout: timed out\n",0,0,0);
235 ldap_pvt_set_errno( ETIMEDOUT );
239 #ifndef HAVE_INET_ATON
241 ldap_pvt_inet_aton( const char *host, struct in_addr *in)
243 unsigned long u = inet_addr( host );
244 if ( u != 0xffffffff || u != (unsigned long) -1 ) {
254 ldap_connect_to_host(LDAP *ld, Sockbuf *sb, const char *host,
255 unsigned long address, int port, int async)
257 struct sockaddr_in sin;
259 ber_socket_t s = AC_SOCKET_INVALID;
260 int rc, i, use_hp = 0;
261 struct hostent *hp, he_buf;
263 char *ha_buf=NULL, *p, *q;
265 osip_debug(ld, "ldap_connect_to_host\n",0,0,0);
268 if (! inet_aton( host, &in) ) {
269 rc = ldap_pvt_gethostbyname_a(host, &he_buf, &ha_buf,
270 &hp, &local_h_errno);
273 ; /*XXX NO MEMORY? */
275 if ( (rc < 0) || (hp == NULL) ) {
277 ldap_pvt_set_errno( WSAGetLastError() );
279 /* not exactly right, but... */
280 ldap_pvt_set_errno( EHOSTUNREACH );
282 if (ha_buf) LDAP_FREE(ha_buf);
291 for ( i = 0; !use_hp || (hp->h_addr_list[i] != 0); ++i, rc = -1 ) {
293 if ( (s = ldap_pvt_socket( ld )) == -1 )
294 /* use_hp ? continue : break; */
297 if ( ldap_pvt_prepare_socket(ld, s) == -1 ) {
298 ldap_pvt_close_socket(ld, s);
299 /* use_hp ? continue : break; */
303 (void)memset((char *)&sin, 0, sizeof(struct sockaddr_in));
304 sin.sin_family = AF_INET;
306 p = (char *)&sin.sin_addr;
307 q = use_hp ? (char *)hp->h_addr_list[i] : (char *)&address;
308 SAFEMEMCPY(p, q, sizeof(sin.sin_addr) );
310 osip_debug(ld, "ldap_connect_to_host: Trying %s:%d\n",
311 inet_ntoa(sin.sin_addr),ntohs(sin.sin_port),0);
313 rc = ldap_pvt_connect(ld, s, &sin, async);
315 if ( (rc == 0) || (rc == -2) ) {
316 ber_pvt_sb_set_desc( sb, s );
320 ldap_pvt_close_socket(ld, s);
325 if (ha_buf) LDAP_FREE(ha_buf);
330 ldap_close_connection( Sockbuf *sb )
332 ber_pvt_sb_close( sb );
336 #if defined( HAVE_KERBEROS ) || defined( HAVE_TLS )
338 ldap_host_connected_to( Sockbuf *sb )
342 struct sockaddr_in sin;
344 /* buffers for gethostbyaddr_r */
345 struct hostent he_buf;
348 #define DO_RETURN(x) if (ha_buf) LDAP_FREE(ha_buf); return (x);
350 (void)memset( (char *)&sin, 0, sizeof( struct sockaddr_in ));
353 if ( getpeername( ber_pvt_sb_get_desc(sb), (struct sockaddr *)&sin, &len ) == -1 ) {
358 * do a reverse lookup on the addr to get the official hostname.
359 * this is necessary for kerberos to work right, since the official
360 * hostname is used as the kerberos instance.
362 if ((ldap_pvt_gethostbyaddr_a( (char *) &sin.sin_addr,
363 sizeof( sin.sin_addr ),
364 AF_INET, &he_buf, &ha_buf,
365 &hp,&local_h_errno ) ==0 ) && (hp != NULL) )
367 if ( hp->h_name != NULL ) {
368 char *host = LDAP_STRDUP( hp->h_name );
377 #endif /* HAVE_KERBEROS || HAVE_TLS */
384 fd_set si_use_readfds;
385 fd_set si_use_writefds;
390 ldap_mark_select_write( LDAP *ld, Sockbuf *sb )
392 struct selectinfo *sip;
394 sip = (struct selectinfo *)ld->ld_selectinfo;
396 if ( !FD_ISSET( ber_pvt_sb_get_desc(sb), &sip->si_writefds )) {
397 FD_SET( (u_int) sb->sb_sd, &sip->si_writefds );
403 ldap_mark_select_read( LDAP *ld, Sockbuf *sb )
405 struct selectinfo *sip;
407 sip = (struct selectinfo *)ld->ld_selectinfo;
409 if ( !FD_ISSET( ber_pvt_sb_get_desc(sb), &sip->si_readfds )) {
410 FD_SET( (u_int) sb->sb_sd, &sip->si_readfds );
416 ldap_mark_select_clear( LDAP *ld, Sockbuf *sb )
418 struct selectinfo *sip;
420 sip = (struct selectinfo *)ld->ld_selectinfo;
422 FD_CLR( (u_int) ber_pvt_sb_get_desc(sb), &sip->si_writefds );
423 FD_CLR( (u_int) ber_pvt_sb_get_desc(sb), &sip->si_readfds );
428 ldap_is_write_ready( LDAP *ld, Sockbuf *sb )
430 struct selectinfo *sip;
432 sip = (struct selectinfo *)ld->ld_selectinfo;
434 return( FD_ISSET( ber_pvt_sb_get_desc(sb), &sip->si_use_writefds ));
439 ldap_is_read_ready( LDAP *ld, Sockbuf *sb )
441 struct selectinfo *sip;
443 sip = (struct selectinfo *)ld->ld_selectinfo;
445 return( FD_ISSET( ber_pvt_sb_get_desc(sb), &sip->si_use_readfds ));
450 ldap_new_select_info( void )
452 struct selectinfo *sip;
454 if (( sip = (struct selectinfo *)LDAP_CALLOC( 1,
455 sizeof( struct selectinfo ))) != NULL ) {
456 FD_ZERO( &sip->si_readfds );
457 FD_ZERO( &sip->si_writefds );
460 return( (void *)sip );
465 ldap_free_select_info( void *sip )
472 ldap_int_ip_init( void )
475 #if defined( HAVE_SYSCONF )
476 tblsize = sysconf( _SC_OPEN_MAX );
477 #elif defined( HAVE_GETDTABLESIZE )
478 tblsize = getdtablesize();
480 tblsize = FD_SETSIZE;
481 #endif /* !USE_SYSCONF */
484 if( tblsize > FD_SETSIZE )
485 tblsize = FD_SETSIZE;
486 #endif /* FD_SETSIZE*/
487 ldap_int_tblsize = tblsize;
492 do_ldap_select( LDAP *ld, struct timeval *timeout )
494 struct selectinfo *sip;
496 Debug( LDAP_DEBUG_TRACE, "do_ldap_select\n", 0, 0, 0 );
498 if ( ldap_int_tblsize == 0 )
501 sip = (struct selectinfo *)ld->ld_selectinfo;
502 sip->si_use_readfds = sip->si_readfds;
503 sip->si_use_writefds = sip->si_writefds;
505 return( select( ldap_int_tblsize,
506 &sip->si_use_readfds, &sip->si_use_writefds,