2 * Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved.
3 * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
6 * Copyright (c) 1995 Regents of the University of Michigan.
9 * os-ip.c -- platform-specific TCP & UDP related code
16 #include <ac/stdlib.h>
19 #include <ac/socket.h>
20 #include <ac/string.h>
22 #include <ac/unistd.h>
26 #endif /* HAVE_IO_H */
28 #if defined( HAVE_FCNTL_H )
31 #define O_NONBLOCK O_NDELAY
33 #endif /* HAVE_FCNTL_H */
35 #if defined( HAVE_SYS_FILIO_H )
36 #include <sys/filio.h>
37 #elif defined( HAVE_SYS_IOCTL_H )
38 #include <sys/ioctl.h>
43 int ldap_int_tblsize = 0;
46 * nonblock connect code
47 * written by Lars Uffmann, <lars.uffmann@mediaway.net>.
49 * Copyright 1999, Lars Uffmann, All rights reserved.
50 * This software is not subject to any license of my employer
53 * OpenLDAP COPYING RESTRICTIONS APPLY, see COPYRIGHT file
55 * Read about the rationale in ldap_connect_timeout:
56 * ftp://koobera.math.uic.edu/www/docs/connect.html.
59 #define osip_debug(ld,fmt,arg1,arg2,arg3) \
61 ldap_log_printf(ld, LDAP_DEBUG_TRACE, fmt, arg1, arg2, arg3); \
65 ldap_pvt_set_errno(int err)
71 ldap_int_timeval_dup( struct timeval **dest, const struct timeval *src )
75 assert( dest != NULL );
82 new = (struct timeval *) malloc(sizeof(struct timeval));
89 SAFEMEMCPY( (char *) new, (char *) src, sizeof(struct timeval));
96 ldap_pvt_ndelay_on(LDAP *ld, int fd)
98 osip_debug(ld, "ldap_ndelay_on: %d\n",fd,0,0);
100 /* #if defined( HAVE_FCNTL_H ) */
101 return fcntl(fd,F_SETFL,fcntl(fd,F_GETFL,0) | O_NONBLOCK);
105 return ioctl( fd, FIONBIO, &status );
112 ldap_pvt_ndelay_off(LDAP *ld, int fd)
114 osip_debug(ld, "ldap_ndelay_off: %d\n",fd,0,0);
116 /* #if defined( HAVE_FCNTL_H ) */
117 return fcntl(fd,F_SETFL,fcntl(fd,F_GETFL,0) & ~O_NONBLOCK);
121 return ioctl( fd, FIONBIO, &status );
127 ldap_pvt_socket(LDAP *ld)
129 ber_socket_t s = socket(AF_INET, SOCK_STREAM, 0);
130 osip_debug(ld, "ldap_new_socket: %d\n",s,0,0);
135 ldap_pvt_close_socket(LDAP *ld, int s)
137 osip_debug(ld, "ldap_close_socket: %d\n",s,0,0);
142 ldap_pvt_prepare_socket(LDAP *ld, int fd)
144 osip_debug(ld, "ldap_prepare_socket: %d\n",fd,0,0);
149 if ( setsockopt( fd, IPPROTO_TCP, TCP_NODELAY, (char*) &dummy, sizeof(dummy) ) == -1 )
157 * check the socket for errors after select returned.
160 ldap_pvt_is_socket_ready(LDAP *ld, int s)
162 osip_debug(ld, "ldap_is_sock_ready: %d\n",s,0,0);
167 "ldap_is_socket_ready: errror on socket %d: errno: %d (%s)\n", \
174 /* #ifdef SO_ERROR */
177 int dummy = sizeof(so_errno);
178 if ( getsockopt(s,SOL_SOCKET,SO_ERROR,&so_errno,&dummy) == -1 )
181 ldap_pvt_set_errno(so_errno);
190 struct sockaddr_in sin;
192 int dummy = sizeof(sin);
193 if ( getpeername(s, (struct sockaddr *) &sin, &dummy) == -1 ) {
196 ldap_pvt_set_errno( WSAGetLastError() );
209 ldap_pvt_connect(LDAP *ld, ber_socket_t s, struct sockaddr_in *sin, int async)
211 struct timeval tv, *opt_tv=NULL;
212 fd_set wfds, *z=NULL;
214 if ( (opt_tv = ld->ld_options.ldo_tm_net) != NULL ) {
215 tv.tv_usec = opt_tv->tv_usec;
216 tv.tv_sec = opt_tv->tv_sec;
219 osip_debug(ld, "ldap_connect_timeout: fd: %d tm: %d async: %d\n",
220 s, opt_tv ? tv.tv_sec : -1, async);
222 if ( ldap_pvt_ndelay_on(ld, s) == -1 )
225 if ( connect(s, (struct sockaddr *) sin, sizeof(struct sockaddr_in)) == 0 )
227 if ( ldap_pvt_ndelay_off(ld, s) == -1 )
233 ldap_pvt_set_errno( WSAGetLastError() );
236 if ( errno != EINPROGRESS && errno != EWOULDBLOCK ) {
241 if ( async ) return ( -2 );
247 if ( select(s + 1, z, &wfds, z, opt_tv ? &tv : NULL) == -1)
250 if ( FD_ISSET(s, &wfds) ) {
251 if ( ldap_pvt_is_socket_ready(ld, s) == -1 )
253 if ( ldap_pvt_ndelay_off(ld, s) == -1 )
257 osip_debug(ld, "ldap_connect_timeout: timed out\n",0,0,0);
258 ldap_pvt_set_errno( ETIMEDOUT );
262 #ifndef HAVE_INET_ATON
264 ldap_pvt_inet_aton( const char *host, struct in_addr *in)
266 unsigned long u = inet_addr( host );
267 if ( u != 0xffffffff || u != (unsigned long) -1 ) {
277 ldap_connect_to_host(LDAP *ld, Sockbuf *sb, const char *host,
278 unsigned long address, int port, int async)
280 struct sockaddr_in sin;
282 ber_socket_t s = AC_SOCKET_INVALID;
283 int rc, i, use_hp = 0;
284 struct hostent *hp, he_buf;
286 char *ha_buf=NULL, *p, *q;
288 osip_debug(ld, "ldap_connect_to_host\n",0,0,0);
291 if (! inet_aton( host, &in) ) {
292 rc = ldap_pvt_gethostbyname_a(host, &he_buf, &ha_buf,
293 &hp, &local_h_errno);
296 ; /*XXX NO MEMORY? */
298 if ( (rc < 0) || (hp == NULL) ) {
300 ldap_pvt_set_errno( WSAGetLastError() );
302 /* not exactly right, but... */
303 ldap_pvt_set_errno( EHOSTUNREACH );
305 if (ha_buf) LDAP_FREE(ha_buf);
314 for ( i = 0; !use_hp || (hp->h_addr_list[i] != 0); ++i, rc = -1 ) {
316 if ( (s = ldap_pvt_socket( ld )) == -1 )
317 /* use_hp ? continue : break; */
320 if ( ldap_pvt_prepare_socket(ld, s) == -1 ) {
321 ldap_pvt_close_socket(ld, s);
322 /* use_hp ? continue : break; */
326 (void)memset((char *)&sin, 0, sizeof(struct sockaddr_in));
327 sin.sin_family = AF_INET;
329 p = (char *)&sin.sin_addr.s_addr;
330 q = use_hp ? (char *)hp->h_addr_list[i] : (char *)&address;
331 SAFEMEMCPY(p, q, sizeof(p) );
333 osip_debug(ld, "ldap_connect_to_host: Trying %s:%d\n",
334 inet_ntoa(sin.sin_addr),ntohs(sin.sin_port),0);
336 rc = ldap_pvt_connect(ld, s, &sin, async);
338 if ( (rc == 0) || (rc == -2) ) {
339 ber_pvt_sb_set_desc( sb, s );
343 ldap_pvt_close_socket(ld, s);
348 if (ha_buf) LDAP_FREE(ha_buf);
353 ldap_close_connection( Sockbuf *sb )
355 ber_pvt_sb_close( sb );
359 #if defined( HAVE_KERBEROS ) || defined( HAVE_TLS )
361 ldap_host_connected_to( Sockbuf *sb )
366 struct sockaddr_in sin;
368 /* buffers for gethostbyaddr_r */
369 struct hostent he_buf;
372 #define DO_RETURN(x) if (ha_buf) LDAP_FREE(ha_buf); return (x);
374 (void)memset( (char *)&sin, 0, sizeof( struct sockaddr_in ));
377 if ( getpeername( ber_pvt_sb_get_desc(sb), (struct sockaddr *)&sin, &len ) == -1 ) {
382 * do a reverse lookup on the addr to get the official hostname.
383 * this is necessary for kerberos to work right, since the official
384 * hostname is used as the kerberos instance.
386 if ((ldap_pvt_gethostbyaddr_a( (char *) &sin.sin_addr,
387 sizeof( sin.sin_addr ),
388 AF_INET, &he_buf, &ha_buf,
389 &hp,&local_h_errno ) ==0 ) && (hp != NULL) )
391 if ( hp->h_name != NULL ) {
392 char *host = LDAP_STRDUP( hp->h_name );
401 #endif /* HAVE_KERBEROS || HAVE_TLS */
408 fd_set si_use_readfds;
409 fd_set si_use_writefds;
414 ldap_mark_select_write( LDAP *ld, Sockbuf *sb )
416 struct selectinfo *sip;
418 sip = (struct selectinfo *)ld->ld_selectinfo;
420 if ( !FD_ISSET( ber_pvt_sb_get_desc(sb), &sip->si_writefds )) {
421 FD_SET( (u_int) sb->sb_sd, &sip->si_writefds );
427 ldap_mark_select_read( LDAP *ld, Sockbuf *sb )
429 struct selectinfo *sip;
431 sip = (struct selectinfo *)ld->ld_selectinfo;
433 if ( !FD_ISSET( ber_pvt_sb_get_desc(sb), &sip->si_readfds )) {
434 FD_SET( (u_int) sb->sb_sd, &sip->si_readfds );
440 ldap_mark_select_clear( LDAP *ld, Sockbuf *sb )
442 struct selectinfo *sip;
444 sip = (struct selectinfo *)ld->ld_selectinfo;
446 FD_CLR( (u_int) ber_pvt_sb_get_desc(sb), &sip->si_writefds );
447 FD_CLR( (u_int) ber_pvt_sb_get_desc(sb), &sip->si_readfds );
452 ldap_is_write_ready( LDAP *ld, Sockbuf *sb )
454 struct selectinfo *sip;
456 sip = (struct selectinfo *)ld->ld_selectinfo;
458 return( FD_ISSET( ber_pvt_sb_get_desc(sb), &sip->si_use_writefds ));
463 ldap_is_read_ready( LDAP *ld, Sockbuf *sb )
465 struct selectinfo *sip;
467 sip = (struct selectinfo *)ld->ld_selectinfo;
469 return( FD_ISSET( ber_pvt_sb_get_desc(sb), &sip->si_use_readfds ));
474 ldap_new_select_info( void )
476 struct selectinfo *sip;
478 if (( sip = (struct selectinfo *)LDAP_CALLOC( 1,
479 sizeof( struct selectinfo ))) != NULL ) {
480 FD_ZERO( &sip->si_readfds );
481 FD_ZERO( &sip->si_writefds );
484 return( (void *)sip );
489 ldap_free_select_info( void *sip )
496 ldap_int_ip_init( void )
499 #if defined( HAVE_SYSCONF )
500 tblsize = sysconf( _SC_OPEN_MAX );
501 #elif defined( HAVE_GETDTABLESIZE )
502 tblsize = getdtablesize();
504 tblsize = FD_SETSIZE;
505 #endif /* !USE_SYSCONF */
508 if( tblsize > FD_SETSIZE )
509 tblsize = FD_SETSIZE;
510 #endif /* FD_SETSIZE*/
511 ldap_int_tblsize = tblsize;
516 do_ldap_select( LDAP *ld, struct timeval *timeout )
518 struct selectinfo *sip;
520 Debug( LDAP_DEBUG_TRACE, "do_ldap_select\n", 0, 0, 0 );
522 if ( ldap_int_tblsize == 0 )
525 sip = (struct selectinfo *)ld->ld_selectinfo;
526 sip->si_use_readfds = sip->si_readfds;
527 sip->si_use_writefds = sip->si_writefds;
529 return( select( ldap_int_tblsize,
530 &sip->si_use_readfds, &sip->si_use_writefds,