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 * request.c - sending of ldap requests; handling of referrals
16 #include <ac/stdlib.h>
19 #include <ac/socket.h>
20 #include <ac/string.h>
22 #include <ac/unistd.h>
27 static LDAPConn *find_connection LDAP_P(( LDAP *ld, LDAPServer *srv, int any ));
28 static void use_connection LDAP_P(( LDAP *ld, LDAPConn *lc ));
29 static void free_servers LDAP_P(( LDAPServer *srvlist ));
31 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
32 static LDAPServer *dn2servers LDAP_P(( LDAP *ld, char *dn ));
33 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
35 static BerElement *re_encode_request LDAP_P(( LDAP *ld, BerElement *origber,
36 int msgid, char **dnp ));
40 ldap_alloc_ber_with_options( LDAP *ld )
44 if (( ber = ber_alloc_t( ld->ld_lberoptions )) == NULLBER ) {
45 ld->ld_errno = LDAP_NO_MEMORY;
46 #ifdef STR_TRANSLATION
48 ldap_set_ber_options( ld, ber );
49 #endif /* STR_TRANSLATION */
57 ldap_set_ber_options( LDAP *ld, BerElement *ber )
59 ber->ber_options = ld->ld_lberoptions;
60 #ifdef STR_TRANSLATION
61 if (( ld->ld_lberoptions & LBER_TRANSLATE_STRINGS ) != 0 ) {
62 ber_set_string_translators( ber,
63 ld->ld_lber_encode_translate_proc,
64 ld->ld_lber_decode_translate_proc );
66 #endif /* STR_TRANSLATION */
71 ldap_send_initial_request(
73 unsigned long msgtype,
77 LDAPServer *servers, *srv;
79 Debug( LDAP_DEBUG_TRACE, "ldap_send_initial_request\n", 0, 0, 0 );
81 if ( ! ber_pvt_sb_in_use(&ld->ld_sb ) ) {
82 /* not connected yet */
84 if (( srv = (LDAPServer *)LDAP_CALLOC( 1, sizeof( LDAPServer ))) ==
85 NULL || ( ld->ld_defhost != NULL && ( srv->lsrv_host =
86 LDAP_STRDUP( ld->ld_defhost )) == NULL ))
88 if (srv != NULL) LDAP_FREE( srv );
90 ld->ld_errno = LDAP_NO_MEMORY;
94 srv->lsrv_port = ld->ld_defport;
96 if (( ld->ld_defconn = ldap_new_connection( ld, &srv, 1,1,0 ))
99 if ( ld->ld_defhost != NULL ) LDAP_FREE( srv->lsrv_host );
100 LDAP_FREE( (char *)srv );
102 ld->ld_errno = LDAP_SERVER_DOWN;
105 ++ld->ld_defconn->lconn_refcnt; /* so it never gets closed/freed */
107 Debug( LDAP_DEBUG_TRACE,
108 "ldap_delayed_open successful, ld_host is %s\n",
109 ( ld->ld_host == NULL ) ? "(null)" : ld->ld_host, 0, 0 );
113 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
114 if ( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_DNS ))
115 && ldap_is_dns_dn( dn ) )
117 if (( servers = dn2servers( ld, dn )) == NULL ) {
123 if ( ldap_debug & LDAP_DEBUG_TRACE ) {
126 for ( srv = servers; srv != NULL;
127 srv = srv->lsrv_next ) {
129 "LDAP server %s: dn %s, port %d\n",
130 srv->lsrv_host, ( srv->lsrv_dn == NULL ) ?
131 "(default)" : srv->lsrv_dn,
135 #endif /* LDAP_DEBUG */
137 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
140 * use of DNS is turned off or this is an X.500 DN...
141 * use our default connection
146 return( ldap_send_server_request( ld, ber, ld->ld_msgid, NULL, servers,
153 ldap_send_server_request( LDAP *ld, BerElement *ber, int msgid, LDAPRequest
154 *parentreq, LDAPServer *srvlist, LDAPConn *lc, int bind )
159 Debug( LDAP_DEBUG_TRACE, "ldap_send_server_request\n", 0, 0, 0 );
162 ld->ld_errno = LDAP_SUCCESS; /* optimistic */
165 if ( srvlist == NULL ) {
168 if (( lc = find_connection( ld, srvlist, 1 )) ==
170 if ( bind && (parentreq != NULL) ) {
171 /* Remember the bind in the parent */
173 ++parentreq->lr_outrefcnt;
175 lc = ldap_new_connection( ld, &srvlist, 0, 1, bind );
177 free_servers( srvlist );
181 if ( lc == NULL || lc->lconn_status != LDAP_CONNST_CONNECTED ) {
183 if ( ld->ld_errno == LDAP_SUCCESS ) {
184 ld->ld_errno = LDAP_SERVER_DOWN;
187 /* Forget about the bind */
188 --parentreq->lr_outrefcnt;
193 use_connection( ld, lc );
194 if (( lr = (LDAPRequest *)LDAP_CALLOC( 1, sizeof( LDAPRequest ))) ==
196 ld->ld_errno = LDAP_NO_MEMORY;
197 ldap_free_connection( ld, lc, 0, 0 );
200 /* Forget about the bind */
201 --parentreq->lr_outrefcnt;
205 lr->lr_msgid = msgid;
206 lr->lr_status = LDAP_REQST_INPROGRESS;
207 lr->lr_res_errno = LDAP_SUCCESS; /* optimistic */
210 if ( parentreq != NULL ) { /* sub-request */
212 /* Increment if we didn't do it before the bind */
213 ++parentreq->lr_outrefcnt;
215 lr->lr_origid = parentreq->lr_origid;
216 lr->lr_parentcnt = parentreq->lr_parentcnt + 1;
217 lr->lr_parent = parentreq;
218 lr->lr_refnext = parentreq->lr_refnext;
219 parentreq->lr_refnext = lr;
220 } else { /* original request */
221 lr->lr_origid = lr->lr_msgid;
224 if (( lr->lr_next = ld->ld_requests ) != NULL ) {
225 lr->lr_next->lr_prev = lr;
227 ld->ld_requests = lr;
230 if ( ber_flush( lc->lconn_sb, ber, 0 ) != 0 ) {
232 if ( errno == EWOULDBLOCK ) {
233 /* need to continue write later */
234 lr->lr_status = LDAP_REQST_WRITING;
235 ldap_mark_select_write( ld, lc->lconn_sb );
238 ld->ld_errno = LDAP_SERVER_DOWN;
239 ldap_free_request( ld, lr );
240 ldap_free_connection( ld, lc, 0, 0 );
247 if ( parentreq == NULL ) {
248 ber->ber_end = ber->ber_ptr;
249 ber->ber_ptr = ber->ber_buf;
252 /* sent -- waiting for a response */
253 ldap_mark_select_read( ld, lc->lconn_sb );
256 ld->ld_errno = LDAP_SUCCESS;
262 ldap_new_connection( LDAP *ld, LDAPServer **srvlistp, int use_ldsb,
263 int connect, int bind )
266 LDAPServer *prevsrv, *srv;
270 * make a new LDAP server connection
271 * XXX open connection synchronously for now
273 if (( lc = (LDAPConn *)LDAP_CALLOC( 1, sizeof( LDAPConn ))) == NULL ||
274 ( !use_ldsb && ( (sb = ber_sockbuf_alloc()) == NULL ))) {
276 LDAP_FREE( (char *)lc );
278 ld->ld_errno = LDAP_NO_MEMORY;
282 lc->lconn_sb = ( use_ldsb ) ? &ld->ld_sb : sb;
287 for ( srv = *srvlistp; srv != NULL; srv = srv->lsrv_next ) {
288 if ( open_ldap_connection( ld, lc->lconn_sb,
289 srv->lsrv_host, srv->lsrv_port,
290 &lc->lconn_krbinstance, 0 ) != -1 ) {
298 ber_sockbuf_free( lc->lconn_sb );
300 LDAP_FREE( (char *)lc );
301 ld->ld_errno = LDAP_SERVER_DOWN;
305 if ( prevsrv == NULL ) {
306 *srvlistp = srv->lsrv_next;
308 prevsrv->lsrv_next = srv->lsrv_next;
310 lc->lconn_server = srv;
313 lc->lconn_status = LDAP_CONNST_CONNECTED;
314 lc->lconn_next = ld->ld_conns;
318 * XXX for now, we always do a synchronous bind. This will have
319 * to change in the long run...
322 int err, freepasswd, authmethod;
323 char *binddn, *passwd;
324 LDAPConn *savedefconn;
326 freepasswd = err = 0;
328 if ( ld->ld_rebindproc == 0 ) {
329 binddn = passwd = "";
330 authmethod = LDAP_AUTH_SIMPLE;
332 if (( err = (*ld->ld_rebindproc)( ld, &binddn, &passwd,
333 &authmethod, 0 )) == LDAP_SUCCESS ) {
343 savedefconn = ld->ld_defconn;
345 ++lc->lconn_refcnt; /* avoid premature free */
347 if ( ldap_bind_s( ld, binddn, passwd, authmethod ) !=
352 ld->ld_defconn = savedefconn;
356 (*ld->ld_rebindproc)( ld, &binddn, &passwd,
361 ldap_free_connection( ld, lc, 1, 0 );
371 find_connection( LDAP *ld, LDAPServer *srv, int any )
373 * return an existing connection (if any) to the server srv
374 * if "any" is non-zero, check for any server in the "srv" chain
380 for ( lc = ld->ld_conns; lc != NULL; lc = lc->lconn_next ) {
381 for ( ls = srv; ls != NULL; ls = ls->lsrv_next ) {
382 if ( lc->lconn_server->lsrv_host != NULL &&
383 ls->lsrv_host != NULL && strcasecmp(
384 ls->lsrv_host, lc->lconn_server->lsrv_host ) == 0
385 && ls->lsrv_port == lc->lconn_server->lsrv_port ) {
400 use_connection( LDAP *ld, LDAPConn *lc )
403 lc->lconn_lastused = time( 0 );
408 ldap_free_connection( LDAP *ld, LDAPConn *lc, int force, int unbind )
410 LDAPConn *tmplc, *prevlc;
412 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection\n", 0, 0, 0 );
414 if ( force || --lc->lconn_refcnt <= 0 ) {
415 if ( lc->lconn_status == LDAP_CONNST_CONNECTED ) {
416 ldap_mark_select_clear( ld, lc->lconn_sb );
418 ldap_send_unbind( ld, lc->lconn_sb, NULL, NULL );
420 ldap_close_connection( lc->lconn_sb );
421 ber_pvt_sb_destroy( lc->lconn_sb );
422 if( lc->lconn_ber != NULL ) {
423 ber_free( lc->lconn_ber, 1 );
427 for ( tmplc = ld->ld_conns; tmplc != NULL;
428 tmplc = tmplc->lconn_next ) {
430 if ( prevlc == NULL ) {
431 ld->ld_conns = tmplc->lconn_next;
433 prevlc->lconn_next = tmplc->lconn_next;
439 free_servers( lc->lconn_server );
440 if ( lc->lconn_krbinstance != NULL ) {
441 LDAP_FREE( lc->lconn_krbinstance );
443 if ( lc->lconn_sb != &ld->ld_sb ) {
444 ber_sockbuf_free( lc->lconn_sb );
447 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection: actually freed\n",
450 lc->lconn_lastused = time( 0 );
451 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection: refcnt %d\n",
452 lc->lconn_refcnt, 0, 0 );
459 ldap_dump_connection( LDAP *ld, LDAPConn *lconns, int all )
464 fprintf( stderr, "** Connection%s:\n", all ? "s" : "" );
465 for ( lc = lconns; lc != NULL; lc = lc->lconn_next ) {
466 if ( lc->lconn_server != NULL ) {
467 fprintf( stderr, "* host: %s port: %d%s\n",
468 ( lc->lconn_server->lsrv_host == NULL ) ? "(null)"
469 : lc->lconn_server->lsrv_host,
470 lc->lconn_server->lsrv_port, ( lc->lconn_sb ==
471 &ld->ld_sb ) ? " (default)" : "" );
473 fprintf( stderr, " refcnt: %d status: %s\n", lc->lconn_refcnt,
474 ( lc->lconn_status == LDAP_CONNST_NEEDSOCKET ) ?
475 "NeedSocket" : ( lc->lconn_status ==
476 LDAP_CONNST_CONNECTING ) ? "Connecting" : "Connected" );
477 fprintf( stderr, " last used: %s\n",
478 ldap_pvt_ctime( &lc->lconn_lastused, timebuf ));
487 ldap_dump_requests_and_responses( LDAP *ld )
492 fprintf( stderr, "** Outstanding Requests:\n" );
493 if (( lr = ld->ld_requests ) == NULL ) {
494 fprintf( stderr, " Empty\n" );
496 for ( ; lr != NULL; lr = lr->lr_next ) {
497 fprintf( stderr, " * msgid %d, origid %d, status %s\n",
498 lr->lr_msgid, lr->lr_origid, ( lr->lr_status ==
499 LDAP_REQST_INPROGRESS ) ? "InProgress" :
500 ( lr->lr_status == LDAP_REQST_CHASINGREFS ) ? "ChasingRefs" :
501 ( lr->lr_status == LDAP_REQST_NOTCONNECTED ) ? "NotConnected" :
503 fprintf( stderr, " outstanding referrals %d, parent count %d\n",
504 lr->lr_outrefcnt, lr->lr_parentcnt );
507 fprintf( stderr, "** Response Queue:\n" );
508 if (( lm = ld->ld_responses ) == NULLMSG ) {
509 fprintf( stderr, " Empty\n" );
511 for ( ; lm != NULLMSG; lm = lm->lm_next ) {
512 fprintf( stderr, " * msgid %d, type %d\n",
513 lm->lm_msgid, lm->lm_msgtype );
514 if (( l = lm->lm_chain ) != NULL ) {
515 fprintf( stderr, " chained responses:\n" );
516 for ( ; l != NULLMSG; l = l->lm_chain ) {
518 " * msgid %d, type %d\n",
519 l->lm_msgid, l->lm_msgtype );
524 #endif /* LDAP_DEBUG */
528 ldap_free_request( LDAP *ld, LDAPRequest *lr )
530 LDAPRequest *tmplr, *nextlr;
532 Debug( LDAP_DEBUG_TRACE, "ldap_free_request (origid %d, msgid %d)\n",
533 lr->lr_origid, lr->lr_msgid, 0 );
535 if ( lr->lr_parent != NULL ) {
536 --lr->lr_parent->lr_outrefcnt;
538 /* free all referrals (child requests) */
539 for ( tmplr = lr->lr_refnext; tmplr != NULL; tmplr = nextlr ) {
540 nextlr = tmplr->lr_refnext;
541 ldap_free_request( ld, tmplr );
545 if ( lr->lr_prev == NULL ) {
546 ld->ld_requests = lr->lr_next;
548 lr->lr_prev->lr_next = lr->lr_next;
551 if ( lr->lr_next != NULL ) {
552 lr->lr_next->lr_prev = lr->lr_prev;
555 if ( lr->lr_ber != NULL ) {
556 ber_free( lr->lr_ber, 1 );
559 if ( lr->lr_res_error != NULL ) {
560 LDAP_FREE( lr->lr_res_error );
563 if ( lr->lr_res_matched != NULL ) {
564 LDAP_FREE( lr->lr_res_matched );
572 free_servers( LDAPServer *srvlist )
576 while ( srvlist != NULL ) {
577 nextsrv = srvlist->lsrv_next;
578 if ( srvlist->lsrv_dn != NULL ) {
579 LDAP_FREE( srvlist->lsrv_dn );
581 if ( srvlist->lsrv_host != NULL ) {
582 LDAP_FREE( srvlist->lsrv_host );
584 LDAP_FREE( srvlist );
591 * XXX merging of errors in this routine needs to be improved
594 ldap_chase_referrals( LDAP *ld, LDAPRequest *lr, char **errstrp, int *hadrefp )
596 int rc, count, len, newdn;
597 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
599 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
600 char *p, *ports, *ref, *tmpref, *refdn, *unfollowed;
601 LDAPRequest *origreq;
605 Debug( LDAP_DEBUG_TRACE, "ldap_chase_referrals\n", 0, 0, 0 );
607 ld->ld_errno = LDAP_SUCCESS; /* optimistic */
610 if ( *errstrp == NULL ) {
614 len = strlen( *errstrp );
615 for ( p = *errstrp; len >= LDAP_REF_STR_LEN; ++p, --len ) {
616 if (( *p == 'R' || *p == 'r' ) && strncasecmp( p,
617 LDAP_REF_STR, LDAP_REF_STR_LEN ) == 0 ) {
619 p += LDAP_REF_STR_LEN;
624 if ( len < LDAP_REF_STR_LEN ) {
628 if ( lr->lr_parentcnt >= ld->ld_refhoplimit ) {
629 Debug( LDAP_DEBUG_ANY,
630 "more than %d referral hops (dropping)\n",
631 ld->ld_refhoplimit, 0, 0 );
632 /* XXX report as error in ld->ld_errno? */
636 /* find original request */
637 for ( origreq = lr; origreq->lr_parent != NULL;
638 origreq = origreq->lr_parent ) {
645 /* parse out & follow referrals */
646 for ( ref = p; rc == 0 && ref != NULL; ref = p ) {
647 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
649 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
651 if (( p = strchr( ref, '\n' )) != NULL ) {
658 if ( len > LDAP_LDAP_REF_STR_LEN && strncasecmp( ref,
659 LDAP_LDAP_REF_STR, LDAP_LDAP_REF_STR_LEN ) == 0 ) {
660 Debug( LDAP_DEBUG_TRACE,
661 "chasing LDAP referral: <%s>\n", ref, 0, 0 );
662 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
664 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
665 tmpref = ref + LDAP_LDAP_REF_STR_LEN;
666 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
667 } else if ( len > LDAP_DX_REF_STR_LEN && strncasecmp( ref,
668 LDAP_DX_REF_STR, LDAP_DX_REF_STR_LEN ) == 0 ) {
669 Debug( LDAP_DEBUG_TRACE,
670 "chasing DX referral: <%s>\n", ref, 0, 0 );
671 tmpref = ref + LDAP_DX_REF_STR_LEN;
672 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
674 Debug( LDAP_DEBUG_TRACE,
675 "ignoring unknown referral <%s>\n", ref, 0, 0 );
676 rc = ldap_append_referral( ld, &unfollowed, ref );
682 if (( refdn = strchr( tmpref, '/' )) != NULL ) {
689 if (( ber = re_encode_request( ld, origreq->lr_ber,
690 ++ld->ld_msgid, &refdn )) == NULL ) {
694 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
696 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
697 if (( srv = (LDAPServer *)LDAP_CALLOC( 1,
698 sizeof( LDAPServer ))) == NULL ) {
700 ld->ld_errno = LDAP_NO_MEMORY;
704 if (( srv->lsrv_host = LDAP_STRDUP( tmpref )) == NULL ) {
705 LDAP_FREE( (char *)srv );
707 ld->ld_errno = LDAP_NO_MEMORY;
711 if (( ports = strchr( srv->lsrv_host, ':' )) != NULL ) {
713 srv->lsrv_port = atoi( ports );
715 srv->lsrv_port = ldap_int_global_options.ldo_defport;
717 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
719 srv = dn2servers( ld, tmpref );
721 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
723 if ( srv != NULL && ldap_send_server_request( ld, ber, ld->ld_msgid,
724 lr, srv, NULL, 1 ) >= 0 ) {
727 Debug( LDAP_DEBUG_ANY,
728 "Unable to chase referral (%s)\n",
729 ldap_err2string( ld->ld_errno ), 0, 0 );
730 rc = ldap_append_referral( ld, &unfollowed, ref );
733 if ( !newdn && refdn != NULL ) {
738 LDAP_FREE( *errstrp );
739 *errstrp = unfollowed;
741 return(( rc == 0 ) ? count : rc );
746 ldap_append_referral( LDAP *ld, char **referralsp, char *s )
750 if ( *referralsp == NULL ) {
752 *referralsp = (char *)LDAP_MALLOC( strlen( s ) + LDAP_REF_STR_LEN
756 *referralsp = (char *)LDAP_REALLOC( *referralsp,
757 strlen( *referralsp ) + strlen( s ) + 2 );
760 if ( *referralsp == NULL ) {
761 ld->ld_errno = LDAP_NO_MEMORY;
766 strcpy( *referralsp, LDAP_REF_STR );
768 strcat( *referralsp, "\n" );
770 strcat( *referralsp, s );
778 re_encode_request( LDAP *ld, BerElement *origber, int msgid, char **dnp )
781 * XXX this routine knows way too much about how the lber library works!
783 unsigned long along, tag;
786 BerElement tmpber, *ber;
789 Debug( LDAP_DEBUG_TRACE,
790 "re_encode_request: new msgid %d, new dn <%s>\n",
791 msgid, ( *dnp == NULL ) ? "NONE" : *dnp, 0 );
796 * all LDAP requests are sequences that start with a message id,
797 * followed by a sequence that is tagged with the operation code
799 if ( ber_scanf( &tmpber, "{i", /*}*/ &along ) != LDAP_TAG_MSGID ||
800 ( tag = ber_skip_tag( &tmpber, &along )) == LBER_DEFAULT ) {
801 ld->ld_errno = LDAP_DECODING_ERROR;
805 if (( ber = ldap_alloc_ber_with_options( ld )) == NULLBER ) {
809 /* bind requests have a version number before the DN & other stuff */
810 if ( tag == LDAP_REQ_BIND && ber_get_int( &tmpber, (long *)&ver ) ==
812 ld->ld_errno = LDAP_DECODING_ERROR;
817 /* the rest of the request is the DN followed by other stuff */
818 if ( ber_get_stringa( &tmpber, &orig_dn ) == LBER_DEFAULT ) {
823 if ( *dnp == NULL ) {
826 LDAP_FREE( orig_dn );
829 if ( tag == LDAP_REQ_BIND ) {
830 rc = ber_printf( ber, "{it{is" /*}}*/, msgid, tag, ver, *dnp );
832 rc = ber_printf( ber, "{it{s" /*}}*/, msgid, tag, *dnp );
840 if ( ber_write( ber, tmpber.ber_ptr, ( tmpber.ber_end -
841 tmpber.ber_ptr ), 0 ) != ( tmpber.ber_end - tmpber.ber_ptr ) ||
842 ber_printf( ber, /*{{*/ "}}" ) == -1 ) {
843 ld->ld_errno = LDAP_ENCODING_ERROR;
849 if ( ldap_debug & LDAP_DEBUG_PACKETS ) {
850 Debug( LDAP_DEBUG_ANY, "re_encode_request new request is:\n",
852 ber_log_dump( LDAP_DEBUG_BER, ldap_debug, ber, 0 );
854 #endif /* LDAP_DEBUG */
861 ldap_find_request_by_msgid( LDAP *ld, int msgid )
865 for ( lr = ld->ld_requests; lr != NULL; lr = lr->lr_next ) {
866 if ( msgid == lr->lr_msgid ) {
875 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
877 dn2servers( LDAP *ld, char *dn ) /* dn can also be a domain.... */
879 char *p, *domain, *host, *server_dn, **dxs;
881 LDAPServer *srvlist, *prevsrv, *srv;
883 if (( domain = strrchr( dn, '@' )) != NULL ) {
889 if (( dxs = ldap_getdxbyname( domain )) == NULL ) {
890 ld->ld_errno = LDAP_NO_MEMORY;
896 for ( i = 0; dxs[ i ] != NULL; ++i ) {
897 port = openldap_ldap_global_options.ldo_defport;
899 if ( strchr( dxs[ i ], ':' ) == NULL ) {
901 } else if ( strlen( dxs[ i ] ) >= 7 &&
902 strncmp( dxs[ i ], "ldap://", 7 ) == 0 ) {
904 if (( p = strchr( host, ':' )) == NULL ) {
910 if (( p = strchr( p, '/' )) != NULL ) {
912 if ( *server_dn == '\0' ) {
920 if ( host != NULL ) { /* found a server we can use */
921 if (( srv = (LDAPServer *)LDAP_CALLOC( 1,
922 sizeof( LDAPServer ))) == NULL ) {
923 free_servers( srvlist );
925 break; /* exit loop & return */
928 /* add to end of list of servers */
929 if ( srvlist == NULL ) {
932 prevsrv->lsrv_next = srv;
937 if (( srv->lsrv_host = LDAP_STRDUP( host )) == NULL ||
938 ( server_dn != NULL && ( srv->lsrv_dn =
939 LDAP_STRDUP( server_dn )) == NULL )) {
940 free_servers( srvlist );
942 break; /* exit loop & return */
944 srv->lsrv_port = port;
948 ldap_value_free( dxs );
950 if ( srvlist == NULL ) {
951 ld->ld_errno = LDAP_SERVER_DOWN;
956 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */