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 */
30 int ldap_int_tblsize = 0;
33 * nonblock connect code
34 * written by Lars Uffmann, <lars.uffmann@mediaway.net>.
36 * Copyright 1999, Lars Uffmann, All rights reserved.
37 * This software is not subject to any license of my employer
40 * OpenLDAP COPYING RESTRICTIONS APPLY, see COPYRIGHT file
42 * Read about the rationale in ldap_connect_timeout:
43 * ftp://koobera.math.uic.edu/www/docs/connect.html.
46 #define osip_debug(ld,fmt,arg1,arg2,arg3) \
48 ldap_log_printf(ld, LDAP_DEBUG_TRACE, fmt, arg1, arg2, arg3); \
52 ldap_pvt_set_errno(int err)
58 ldap_int_timeval_dup( struct timeval **dest, const struct timeval *src )
62 assert( dest != NULL );
69 new = (struct timeval *) malloc(sizeof(struct timeval));
76 SAFEMEMCPY( (char *) new, (const char *) src, sizeof(struct timeval));
83 ldap_pvt_ndelay_on(LDAP *ld, int fd)
85 osip_debug(ld, "ldap_ndelay_on: %d\n",fd,0,0);
86 return ber_pvt_socket_set_nonblock( fd, 1 );
90 ldap_pvt_ndelay_off(LDAP *ld, int fd)
92 osip_debug(ld, "ldap_ndelay_off: %d\n",fd,0,0);
93 return ber_pvt_socket_set_nonblock( fd, 0 );
97 ldap_pvt_socket(LDAP *ld)
99 ber_socket_t s = socket(AF_INET, SOCK_STREAM, 0);
100 osip_debug(ld, "ldap_new_socket: %d\n",s,0,0);
105 ldap_pvt_close_socket(LDAP *ld, int s)
107 osip_debug(ld, "ldap_close_socket: %d\n",s,0,0);
112 ldap_pvt_prepare_socket(LDAP *ld, int fd)
114 osip_debug(ld, "ldap_prepare_socket: %d\n",fd,0,0);
119 if ( setsockopt( fd, IPPROTO_TCP, TCP_NODELAY, (char*) &dummy, sizeof(dummy) ) == -1 )
129 "ldap_is_socket_ready: errror on socket %d: errno: %d (%s)\n", \
136 * check the socket for errors after select returned.
139 ldap_pvt_is_socket_ready(LDAP *ld, int s)
141 osip_debug(ld, "ldap_is_sock_ready: %d\n",s,0,0);
143 #if defined( notyet ) /* && defined( SO_ERROR ) */
146 int dummy = sizeof(so_errno);
147 if ( getsockopt( s, SOL_SOCKET, SO_ERROR, &so_errno, &dummy ) == -1 ) {
151 ldap_pvt_set_errno(so_errno);
160 struct sockaddr_in sin;
162 int dummy = sizeof(sin);
163 if ( getpeername( s, (struct sockaddr *) &sin, &dummy ) == -1 ) {
164 /* XXX: needs to be replace with ber_stream_read() */
167 ldap_pvt_set_errno( WSAGetLastError() );
180 ldap_pvt_connect(LDAP *ld, ber_socket_t s, struct sockaddr_in *sin, int async)
182 struct timeval tv, *opt_tv=NULL;
183 fd_set wfds, *z=NULL;
185 if ( (opt_tv = ld->ld_options.ldo_tm_net) != NULL ) {
186 tv.tv_usec = opt_tv->tv_usec;
187 tv.tv_sec = opt_tv->tv_sec;
190 osip_debug(ld, "ldap_connect_timeout: fd: %d tm: %d async: %d\n",
191 s, opt_tv ? tv.tv_sec : -1, async);
193 if ( ldap_pvt_ndelay_on(ld, s) == -1 )
196 if ( connect(s, (struct sockaddr *) sin, sizeof(struct sockaddr_in)) == 0 )
198 if ( ldap_pvt_ndelay_off(ld, s) == -1 )
204 ldap_pvt_set_errno( WSAGetLastError() );
207 if ( errno != EINPROGRESS && errno != EWOULDBLOCK ) {
212 if ( async ) return ( -2 );
218 if ( select(ldap_int_tblsize, z, &wfds, z, opt_tv ? &tv : NULL) == -1)
221 if ( FD_ISSET(s, &wfds) ) {
222 if ( ldap_pvt_is_socket_ready(ld, s) == -1 )
224 if ( ldap_pvt_ndelay_off(ld, s) == -1 )
228 osip_debug(ld, "ldap_connect_timeout: timed out\n",0,0,0);
229 ldap_pvt_set_errno( ETIMEDOUT );
233 #ifndef HAVE_INET_ATON
235 ldap_pvt_inet_aton( const char *host, struct in_addr *in)
237 unsigned long u = inet_addr( host );
238 if ( u != 0xffffffff || u != (unsigned long) -1 ) {
248 ldap_connect_to_host(LDAP *ld, Sockbuf *sb, const char *host,
249 unsigned long address, int port, int async)
251 struct sockaddr_in sin;
253 ber_socket_t s = AC_SOCKET_INVALID;
254 int rc, i, use_hp = 0;
255 struct hostent *hp, he_buf;
257 char *ha_buf=NULL, *p, *q;
259 osip_debug(ld, "ldap_connect_to_host\n",0,0,0);
262 if (! inet_aton( host, &in) ) {
263 rc = ldap_pvt_gethostbyname_a(host, &he_buf, &ha_buf,
264 &hp, &local_h_errno);
267 ; /*XXX NO MEMORY? */
269 if ( (rc < 0) || (hp == NULL) ) {
271 ldap_pvt_set_errno( WSAGetLastError() );
273 /* not exactly right, but... */
274 ldap_pvt_set_errno( EHOSTUNREACH );
276 if (ha_buf) LDAP_FREE(ha_buf);
285 for ( i = 0; !use_hp || (hp->h_addr_list[i] != 0); ++i, rc = -1 ) {
287 if ( (s = ldap_pvt_socket( ld )) == -1 )
288 /* use_hp ? continue : break; */
291 if ( ldap_pvt_prepare_socket(ld, s) == -1 ) {
292 ldap_pvt_close_socket(ld, s);
293 /* use_hp ? continue : break; */
297 (void)memset((char *)&sin, 0, sizeof(struct sockaddr_in));
298 sin.sin_family = AF_INET;
300 p = (char *)&sin.sin_addr.s_addr;
301 q = use_hp ? (char *)hp->h_addr_list[i] : (char *)&address;
302 SAFEMEMCPY(p, q, sizeof(p) );
304 osip_debug(ld, "ldap_connect_to_host: Trying %s:%d\n",
305 inet_ntoa(sin.sin_addr),ntohs(sin.sin_port),0);
307 rc = ldap_pvt_connect(ld, s, &sin, async);
309 if ( (rc == 0) || (rc == -2) ) {
310 ber_pvt_sb_set_desc( sb, s );
314 ldap_pvt_close_socket(ld, s);
319 if (ha_buf) LDAP_FREE(ha_buf);
324 ldap_close_connection( Sockbuf *sb )
326 ber_pvt_sb_close( sb );
330 #if defined( HAVE_KERBEROS ) || defined( HAVE_TLS )
332 ldap_host_connected_to( Sockbuf *sb )
337 struct sockaddr_in sin;
339 /* buffers for gethostbyaddr_r */
340 struct hostent he_buf;
343 #define DO_RETURN(x) if (ha_buf) LDAP_FREE(ha_buf); return (x);
345 (void)memset( (char *)&sin, 0, sizeof( struct sockaddr_in ));
348 if ( getpeername( ber_pvt_sb_get_desc(sb), (struct sockaddr *)&sin, &len ) == -1 ) {
353 * do a reverse lookup on the addr to get the official hostname.
354 * this is necessary for kerberos to work right, since the official
355 * hostname is used as the kerberos instance.
357 if ((ldap_pvt_gethostbyaddr_a( (char *) &sin.sin_addr,
358 sizeof( sin.sin_addr ),
359 AF_INET, &he_buf, &ha_buf,
360 &hp,&local_h_errno ) ==0 ) && (hp != NULL) )
362 if ( hp->h_name != NULL ) {
363 char *host = LDAP_STRDUP( hp->h_name );
372 #endif /* HAVE_KERBEROS || HAVE_TLS */
379 fd_set si_use_readfds;
380 fd_set si_use_writefds;
385 ldap_mark_select_write( LDAP *ld, Sockbuf *sb )
387 struct selectinfo *sip;
389 sip = (struct selectinfo *)ld->ld_selectinfo;
391 if ( !FD_ISSET( ber_pvt_sb_get_desc(sb), &sip->si_writefds )) {
392 FD_SET( (u_int) sb->sb_sd, &sip->si_writefds );
398 ldap_mark_select_read( LDAP *ld, Sockbuf *sb )
400 struct selectinfo *sip;
402 sip = (struct selectinfo *)ld->ld_selectinfo;
404 if ( !FD_ISSET( ber_pvt_sb_get_desc(sb), &sip->si_readfds )) {
405 FD_SET( (u_int) sb->sb_sd, &sip->si_readfds );
411 ldap_mark_select_clear( LDAP *ld, Sockbuf *sb )
413 struct selectinfo *sip;
415 sip = (struct selectinfo *)ld->ld_selectinfo;
417 FD_CLR( (u_int) ber_pvt_sb_get_desc(sb), &sip->si_writefds );
418 FD_CLR( (u_int) ber_pvt_sb_get_desc(sb), &sip->si_readfds );
423 ldap_is_write_ready( LDAP *ld, Sockbuf *sb )
425 struct selectinfo *sip;
427 sip = (struct selectinfo *)ld->ld_selectinfo;
429 return( FD_ISSET( ber_pvt_sb_get_desc(sb), &sip->si_use_writefds ));
434 ldap_is_read_ready( LDAP *ld, Sockbuf *sb )
436 struct selectinfo *sip;
438 sip = (struct selectinfo *)ld->ld_selectinfo;
440 return( FD_ISSET( ber_pvt_sb_get_desc(sb), &sip->si_use_readfds ));
445 ldap_new_select_info( void )
447 struct selectinfo *sip;
449 if (( sip = (struct selectinfo *)LDAP_CALLOC( 1,
450 sizeof( struct selectinfo ))) != NULL ) {
451 FD_ZERO( &sip->si_readfds );
452 FD_ZERO( &sip->si_writefds );
455 return( (void *)sip );
460 ldap_free_select_info( void *sip )
467 ldap_int_ip_init( void )
470 #if defined( HAVE_SYSCONF )
471 tblsize = sysconf( _SC_OPEN_MAX );
472 #elif defined( HAVE_GETDTABLESIZE )
473 tblsize = getdtablesize();
475 tblsize = FD_SETSIZE;
476 #endif /* !USE_SYSCONF */
479 if( tblsize > FD_SETSIZE )
480 tblsize = FD_SETSIZE;
481 #endif /* FD_SETSIZE*/
482 ldap_int_tblsize = tblsize;
487 do_ldap_select( LDAP *ld, struct timeval *timeout )
489 struct selectinfo *sip;
491 Debug( LDAP_DEBUG_TRACE, "do_ldap_select\n", 0, 0, 0 );
493 if ( ldap_int_tblsize == 0 )
496 sip = (struct selectinfo *)ld->ld_selectinfo;
497 sip->si_use_readfds = sip->si_readfds;
498 sip->si_use_writefds = sip->si_writefds;
500 return( select( ldap_int_tblsize,
501 &sip->si_use_readfds, &sip->si_use_writefds,