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, const char *dn ));
33 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
35 static BerElement *re_encode_request LDAP_P((
43 ldap_alloc_ber_with_options( LDAP *ld )
47 if (( ber = ber_alloc_t( ld->ld_lberoptions )) == NULL ) {
48 ld->ld_errno = LDAP_NO_MEMORY;
49 #ifdef STR_TRANSLATION
51 ldap_set_ber_options( ld, ber );
52 #endif /* STR_TRANSLATION */
60 ldap_set_ber_options( LDAP *ld, BerElement *ber )
62 ber->ber_options = ld->ld_lberoptions;
63 #ifdef STR_TRANSLATION
64 if (( ld->ld_lberoptions & LBER_TRANSLATE_STRINGS ) != 0 ) {
65 ber_set_string_translators( ber,
66 ld->ld_lber_encode_translate_proc,
67 ld->ld_lber_decode_translate_proc );
69 #endif /* STR_TRANSLATION */
74 ldap_send_initial_request(
80 LDAPServer *servers, *srv;
82 Debug( LDAP_DEBUG_TRACE, "ldap_send_initial_request\n", 0, 0, 0 );
84 if ( ! ber_pvt_sb_in_use(&ld->ld_sb ) ) {
85 /* not connected yet */
87 if (( srv = (LDAPServer *)LDAP_CALLOC( 1, sizeof( LDAPServer ))) ==
88 NULL || ( ld->ld_defhost != NULL && ( srv->lsrv_host =
89 LDAP_STRDUP( ld->ld_defhost )) == NULL ))
91 if (srv != NULL) LDAP_FREE( srv );
93 ld->ld_errno = LDAP_NO_MEMORY;
97 srv->lsrv_port = ld->ld_defport;
99 if (( ld->ld_defconn = ldap_new_connection( ld, &srv, 1,1,0 ))
102 if ( ld->ld_defhost != NULL ) LDAP_FREE( srv->lsrv_host );
103 LDAP_FREE( (char *)srv );
105 ld->ld_errno = LDAP_SERVER_DOWN;
108 ++ld->ld_defconn->lconn_refcnt; /* so it never gets closed/freed */
110 Debug( LDAP_DEBUG_TRACE,
111 "ldap_delayed_open successful, ld_host is %s\n",
112 ( ld->ld_host == NULL ) ? "(null)" : ld->ld_host, 0, 0 );
116 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
117 if ( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_DNS )
118 && ldap_is_dns_dn( dn ) )
120 if (( servers = dn2servers( ld, dn )) == NULL ) {
126 if ( ldap_debug & LDAP_DEBUG_TRACE ) {
129 for ( srv = servers; srv != NULL;
130 srv = srv->lsrv_next ) {
132 "LDAP server %s: dn %s, port %d\n",
133 srv->lsrv_host, ( srv->lsrv_dn == NULL ) ?
134 "(default)" : srv->lsrv_dn,
138 #endif /* LDAP_DEBUG */
140 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
143 * use of DNS is turned off or this is an X.500 DN...
144 * use our default connection
149 return( ldap_send_server_request( ld, ber, ld->ld_msgid, NULL, servers,
156 ldap_send_server_request(
160 LDAPRequest *parentreq,
168 Debug( LDAP_DEBUG_TRACE, "ldap_send_server_request\n", 0, 0, 0 );
171 ld->ld_errno = LDAP_SUCCESS; /* optimistic */
174 if ( srvlist == NULL ) {
177 if (( lc = find_connection( ld, srvlist, 1 )) ==
179 if ( bind && (parentreq != NULL) ) {
180 /* Remember the bind in the parent */
182 ++parentreq->lr_outrefcnt;
184 lc = ldap_new_connection( ld, &srvlist, 0, 1, bind );
186 free_servers( srvlist );
190 if ( lc == NULL || lc->lconn_status != LDAP_CONNST_CONNECTED ) {
192 if ( ld->ld_errno == LDAP_SUCCESS ) {
193 ld->ld_errno = LDAP_SERVER_DOWN;
196 /* Forget about the bind */
197 --parentreq->lr_outrefcnt;
202 use_connection( ld, lc );
203 if (( lr = (LDAPRequest *)LDAP_CALLOC( 1, sizeof( LDAPRequest ))) ==
205 ld->ld_errno = LDAP_NO_MEMORY;
206 ldap_free_connection( ld, lc, 0, 0 );
209 /* Forget about the bind */
210 --parentreq->lr_outrefcnt;
214 lr->lr_msgid = msgid;
215 lr->lr_status = LDAP_REQST_INPROGRESS;
216 lr->lr_res_errno = LDAP_SUCCESS; /* optimistic */
219 if ( parentreq != NULL ) { /* sub-request */
221 /* Increment if we didn't do it before the bind */
222 ++parentreq->lr_outrefcnt;
224 lr->lr_origid = parentreq->lr_origid;
225 lr->lr_parentcnt = parentreq->lr_parentcnt + 1;
226 lr->lr_parent = parentreq;
227 lr->lr_refnext = parentreq->lr_refnext;
228 parentreq->lr_refnext = lr;
229 } else { /* original request */
230 lr->lr_origid = lr->lr_msgid;
233 if (( lr->lr_next = ld->ld_requests ) != NULL ) {
234 lr->lr_next->lr_prev = lr;
236 ld->ld_requests = lr;
239 if ( ber_flush( lc->lconn_sb, ber, 0 ) != 0 ) {
241 if ( errno == EWOULDBLOCK ) {
242 /* need to continue write later */
243 lr->lr_status = LDAP_REQST_WRITING;
244 ldap_mark_select_write( ld, lc->lconn_sb );
247 ld->ld_errno = LDAP_SERVER_DOWN;
248 ldap_free_request( ld, lr );
249 ldap_free_connection( ld, lc, 0, 0 );
256 if ( parentreq == NULL ) {
257 ber->ber_end = ber->ber_ptr;
258 ber->ber_ptr = ber->ber_buf;
261 /* sent -- waiting for a response */
262 ldap_mark_select_read( ld, lc->lconn_sb );
265 ld->ld_errno = LDAP_SUCCESS;
271 ldap_new_connection( LDAP *ld, LDAPServer **srvlistp, int use_ldsb,
272 int connect, int bind )
275 LDAPServer *prevsrv, *srv;
279 * make a new LDAP server connection
280 * XXX open connection synchronously for now
282 if (( lc = (LDAPConn *)LDAP_CALLOC( 1, sizeof( LDAPConn ))) == NULL ||
283 ( !use_ldsb && ( (sb = ber_sockbuf_alloc()) == NULL ))) {
285 LDAP_FREE( (char *)lc );
287 ld->ld_errno = LDAP_NO_MEMORY;
291 lc->lconn_sb = ( use_ldsb ) ? &ld->ld_sb : sb;
296 for ( srv = *srvlistp; srv != NULL; srv = srv->lsrv_next ) {
297 if ( open_ldap_connection( ld, lc->lconn_sb,
298 srv->lsrv_host, srv->lsrv_port,
299 &lc->lconn_krbinstance, 0 ) != -1 ) {
307 ber_sockbuf_free( lc->lconn_sb );
309 LDAP_FREE( (char *)lc );
310 ld->ld_errno = LDAP_SERVER_DOWN;
314 if ( prevsrv == NULL ) {
315 *srvlistp = srv->lsrv_next;
317 prevsrv->lsrv_next = srv->lsrv_next;
319 lc->lconn_server = srv;
322 lc->lconn_status = LDAP_CONNST_CONNECTED;
323 lc->lconn_next = ld->ld_conns;
327 * XXX for now, we always do a synchronous bind. This will have
328 * to change in the long run...
331 int err, freepasswd, authmethod;
332 char *binddn, *passwd;
333 LDAPConn *savedefconn;
335 freepasswd = err = 0;
337 if ( ld->ld_rebindproc == 0 ) {
338 binddn = passwd = "";
339 authmethod = LDAP_AUTH_SIMPLE;
341 if (( err = (*ld->ld_rebindproc)( ld, &binddn, &passwd,
342 &authmethod, 0 )) == LDAP_SUCCESS ) {
352 savedefconn = ld->ld_defconn;
354 ++lc->lconn_refcnt; /* avoid premature free */
356 if ( ldap_bind_s( ld, binddn, passwd, authmethod ) !=
361 ld->ld_defconn = savedefconn;
365 (*ld->ld_rebindproc)( ld, &binddn, &passwd,
370 ldap_free_connection( ld, lc, 1, 0 );
380 find_connection( LDAP *ld, LDAPServer *srv, int any )
382 * return an existing connection (if any) to the server srv
383 * if "any" is non-zero, check for any server in the "srv" chain
389 for ( lc = ld->ld_conns; lc != NULL; lc = lc->lconn_next ) {
390 for ( ls = srv; ls != NULL; ls = ls->lsrv_next ) {
391 if ( lc->lconn_server->lsrv_host != NULL &&
392 ls->lsrv_host != NULL && strcasecmp(
393 ls->lsrv_host, lc->lconn_server->lsrv_host ) == 0
394 && ls->lsrv_port == lc->lconn_server->lsrv_port ) {
409 use_connection( LDAP *ld, LDAPConn *lc )
412 lc->lconn_lastused = time( NULL );
417 ldap_free_connection( LDAP *ld, LDAPConn *lc, int force, int unbind )
419 LDAPConn *tmplc, *prevlc;
421 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection\n", 0, 0, 0 );
423 if ( force || --lc->lconn_refcnt <= 0 ) {
424 if ( lc->lconn_status == LDAP_CONNST_CONNECTED ) {
425 ldap_mark_select_clear( ld, lc->lconn_sb );
427 ldap_send_unbind( ld, lc->lconn_sb, NULL, NULL );
429 ldap_close_connection( lc->lconn_sb );
430 ber_pvt_sb_destroy( lc->lconn_sb );
431 if( lc->lconn_ber != NULL ) {
432 ber_free( lc->lconn_ber, 1 );
436 for ( tmplc = ld->ld_conns; tmplc != NULL;
437 tmplc = tmplc->lconn_next ) {
439 if ( prevlc == NULL ) {
440 ld->ld_conns = tmplc->lconn_next;
442 prevlc->lconn_next = tmplc->lconn_next;
448 free_servers( lc->lconn_server );
449 if ( lc->lconn_krbinstance != NULL ) {
450 LDAP_FREE( lc->lconn_krbinstance );
452 if ( lc->lconn_sb != &ld->ld_sb ) {
453 ber_sockbuf_free( lc->lconn_sb );
456 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection: actually freed\n",
459 lc->lconn_lastused = time( NULL );
460 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection: refcnt %d\n",
461 lc->lconn_refcnt, 0, 0 );
468 ldap_dump_connection( LDAP *ld, LDAPConn *lconns, int all )
473 fprintf( stderr, "** Connection%s:\n", all ? "s" : "" );
474 for ( lc = lconns; lc != NULL; lc = lc->lconn_next ) {
475 if ( lc->lconn_server != NULL ) {
476 fprintf( stderr, "* host: %s port: %d%s\n",
477 ( lc->lconn_server->lsrv_host == NULL ) ? "(null)"
478 : lc->lconn_server->lsrv_host,
479 lc->lconn_server->lsrv_port, ( lc->lconn_sb ==
480 &ld->ld_sb ) ? " (default)" : "" );
482 fprintf( stderr, " refcnt: %d status: %s\n", lc->lconn_refcnt,
483 ( lc->lconn_status == LDAP_CONNST_NEEDSOCKET ) ?
484 "NeedSocket" : ( lc->lconn_status ==
485 LDAP_CONNST_CONNECTING ) ? "Connecting" : "Connected" );
486 fprintf( stderr, " last used: %s\n",
487 ldap_pvt_ctime( &lc->lconn_lastused, timebuf ));
496 ldap_dump_requests_and_responses( LDAP *ld )
501 fprintf( stderr, "** Outstanding Requests:\n" );
502 if (( lr = ld->ld_requests ) == NULL ) {
503 fprintf( stderr, " Empty\n" );
505 for ( ; lr != NULL; lr = lr->lr_next ) {
506 fprintf( stderr, " * msgid %d, origid %d, status %s\n",
507 lr->lr_msgid, lr->lr_origid, ( lr->lr_status ==
508 LDAP_REQST_INPROGRESS ) ? "InProgress" :
509 ( lr->lr_status == LDAP_REQST_CHASINGREFS ) ? "ChasingRefs" :
510 ( lr->lr_status == LDAP_REQST_NOTCONNECTED ) ? "NotConnected" :
512 fprintf( stderr, " outstanding referrals %d, parent count %d\n",
513 lr->lr_outrefcnt, lr->lr_parentcnt );
516 fprintf( stderr, "** Response Queue:\n" );
517 if (( lm = ld->ld_responses ) == NULL ) {
518 fprintf( stderr, " Empty\n" );
520 for ( ; lm != NULL; lm = lm->lm_next ) {
521 fprintf( stderr, " * msgid %d, type %lu\n",
522 lm->lm_msgid, (unsigned long) lm->lm_msgtype );
523 if (( l = lm->lm_chain ) != NULL ) {
524 fprintf( stderr, " chained responses:\n" );
525 for ( ; l != NULL; l = l->lm_chain ) {
527 " * msgid %d, type %lu\n",
529 (unsigned long) l->lm_msgtype );
534 #endif /* LDAP_DEBUG */
538 ldap_free_request( LDAP *ld, LDAPRequest *lr )
540 LDAPRequest *tmplr, *nextlr;
542 Debug( LDAP_DEBUG_TRACE, "ldap_free_request (origid %d, msgid %d)\n",
543 lr->lr_origid, lr->lr_msgid, 0 );
545 if ( lr->lr_parent != NULL ) {
546 --lr->lr_parent->lr_outrefcnt;
548 /* free all referrals (child requests) */
549 for ( tmplr = lr->lr_refnext; tmplr != NULL; tmplr = nextlr ) {
550 nextlr = tmplr->lr_refnext;
551 ldap_free_request( ld, tmplr );
555 if ( lr->lr_prev == NULL ) {
556 ld->ld_requests = lr->lr_next;
558 lr->lr_prev->lr_next = lr->lr_next;
561 if ( lr->lr_next != NULL ) {
562 lr->lr_next->lr_prev = lr->lr_prev;
565 if ( lr->lr_ber != NULL ) {
566 ber_free( lr->lr_ber, 1 );
569 if ( lr->lr_res_error != NULL ) {
570 LDAP_FREE( lr->lr_res_error );
573 if ( lr->lr_res_matched != NULL ) {
574 LDAP_FREE( lr->lr_res_matched );
582 free_servers( LDAPServer *srvlist )
586 while ( srvlist != NULL ) {
587 nextsrv = srvlist->lsrv_next;
588 if ( srvlist->lsrv_dn != NULL ) {
589 LDAP_FREE( srvlist->lsrv_dn );
591 if ( srvlist->lsrv_host != NULL ) {
592 LDAP_FREE( srvlist->lsrv_host );
594 LDAP_FREE( srvlist );
601 * XXX merging of errors in this routine needs to be improved
604 ldap_chase_referrals( LDAP *ld, LDAPRequest *lr, char **errstrp, int *hadrefp )
606 int rc, count, len, newdn;
607 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
609 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
610 char *p, *ports, *ref, *tmpref, *refdn, *unfollowed;
611 LDAPRequest *origreq;
615 Debug( LDAP_DEBUG_TRACE, "ldap_chase_referrals\n", 0, 0, 0 );
617 ld->ld_errno = LDAP_SUCCESS; /* optimistic */
620 if ( *errstrp == NULL ) {
624 len = strlen( *errstrp );
625 for ( p = *errstrp; len >= LDAP_REF_STR_LEN; ++p, --len ) {
626 if (( *p == 'R' || *p == 'r' ) && strncasecmp( p,
627 LDAP_REF_STR, LDAP_REF_STR_LEN ) == 0 ) {
629 p += LDAP_REF_STR_LEN;
634 if ( len < LDAP_REF_STR_LEN ) {
638 if ( lr->lr_parentcnt >= ld->ld_refhoplimit ) {
639 Debug( LDAP_DEBUG_ANY,
640 "more than %d referral hops (dropping)\n",
641 ld->ld_refhoplimit, 0, 0 );
642 /* XXX report as error in ld->ld_errno? */
646 /* find original request */
647 for ( origreq = lr; origreq->lr_parent != NULL;
648 origreq = origreq->lr_parent ) {
655 /* parse out & follow referrals */
656 for ( ref = p; rc == 0 && ref != NULL; ref = p ) {
657 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
659 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
661 if (( p = strchr( ref, '\n' )) != NULL ) {
668 if ( len > LDAP_LDAP_REF_STR_LEN && strncasecmp( ref,
669 LDAP_LDAP_REF_STR, LDAP_LDAP_REF_STR_LEN ) == 0 ) {
670 Debug( LDAP_DEBUG_TRACE,
671 "chasing LDAP referral: <%s>\n", ref, 0, 0 );
672 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
674 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
675 tmpref = ref + LDAP_LDAP_REF_STR_LEN;
676 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
677 } else if ( len > LDAP_DX_REF_STR_LEN && strncasecmp( ref,
678 LDAP_DX_REF_STR, LDAP_DX_REF_STR_LEN ) == 0 ) {
679 Debug( LDAP_DEBUG_TRACE,
680 "chasing DX referral: <%s>\n", ref, 0, 0 );
681 tmpref = ref + LDAP_DX_REF_STR_LEN;
682 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
684 Debug( LDAP_DEBUG_TRACE,
685 "ignoring unknown referral <%s>\n", ref, 0, 0 );
686 rc = ldap_append_referral( ld, &unfollowed, ref );
692 if (( refdn = strchr( tmpref, '/' )) != NULL ) {
699 if (( ber = re_encode_request( ld, origreq->lr_ber,
700 ++ld->ld_msgid, &refdn )) == NULL ) {
704 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
706 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
707 if (( srv = (LDAPServer *)LDAP_CALLOC( 1,
708 sizeof( LDAPServer ))) == NULL ) {
710 ld->ld_errno = LDAP_NO_MEMORY;
714 if (( srv->lsrv_host = LDAP_STRDUP( tmpref )) == NULL ) {
715 LDAP_FREE( (char *)srv );
717 ld->ld_errno = LDAP_NO_MEMORY;
721 if (( ports = strchr( srv->lsrv_host, ':' )) != NULL ) {
723 srv->lsrv_port = atoi( ports );
725 srv->lsrv_port = ldap_int_global_options.ldo_defport;
727 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
729 srv = dn2servers( ld, tmpref );
731 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
733 if ( srv != NULL && ldap_send_server_request( ld, ber, ld->ld_msgid,
734 lr, srv, NULL, 1 ) >= 0 ) {
737 Debug( LDAP_DEBUG_ANY,
738 "Unable to chase referral (%s)\n",
739 ldap_err2string( ld->ld_errno ), 0, 0 );
740 rc = ldap_append_referral( ld, &unfollowed, ref );
743 if ( !newdn && refdn != NULL ) {
748 LDAP_FREE( *errstrp );
749 *errstrp = unfollowed;
751 return(( rc == 0 ) ? count : rc );
756 ldap_append_referral( LDAP *ld, char **referralsp, char *s )
760 if ( *referralsp == NULL ) {
762 *referralsp = (char *)LDAP_MALLOC( strlen( s ) + LDAP_REF_STR_LEN
766 *referralsp = (char *)LDAP_REALLOC( *referralsp,
767 strlen( *referralsp ) + strlen( s ) + 2 );
770 if ( *referralsp == NULL ) {
771 ld->ld_errno = LDAP_NO_MEMORY;
776 strcpy( *referralsp, LDAP_REF_STR );
778 strcat( *referralsp, "\n" );
780 strcat( *referralsp, s );
788 re_encode_request( LDAP *ld, BerElement *origber, ber_int_t msgid, char **dnp )
791 * XXX this routine knows way too much about how the lber library works!
798 BerElement tmpber, *ber;
801 Debug( LDAP_DEBUG_TRACE,
802 "re_encode_request: new msgid %ld, new dn <%s>\n",
803 (long) msgid, ( *dnp == NULL ) ? "NONE" : *dnp, 0 );
808 * all LDAP requests are sequences that start with a message id,
809 * followed by a sequence that is tagged with the operation code
811 if ( ber_scanf( &tmpber, "{i", /*}*/ &along ) != LDAP_TAG_MSGID ||
812 ( tag = ber_skip_tag( &tmpber, &len )) == LBER_DEFAULT ) {
813 ld->ld_errno = LDAP_DECODING_ERROR;
817 if (( ber = ldap_alloc_ber_with_options( ld )) == NULL ) {
821 /* bind requests have a version number before the DN & other stuff */
822 if ( tag == LDAP_REQ_BIND && ber_get_int( &tmpber, &ver ) ==
824 ld->ld_errno = LDAP_DECODING_ERROR;
829 /* the rest of the request is the DN followed by other stuff */
830 if ( ber_get_stringa( &tmpber, &orig_dn ) == LBER_DEFAULT ) {
835 if ( *dnp == NULL ) {
838 LDAP_FREE( orig_dn );
841 if ( tag == LDAP_REQ_BIND ) {
842 rc = ber_printf( ber, "{it{is" /*}}*/, msgid, tag, ver, *dnp );
844 rc = ber_printf( ber, "{it{s" /*}}*/, msgid, tag, *dnp );
852 if ( ber_write( ber, tmpber.ber_ptr, ( tmpber.ber_end -
853 tmpber.ber_ptr ), 0 ) != ( tmpber.ber_end - tmpber.ber_ptr ) ||
854 ber_printf( ber, /*{{*/ "}}" ) == -1 ) {
855 ld->ld_errno = LDAP_ENCODING_ERROR;
861 if ( ldap_debug & LDAP_DEBUG_PACKETS ) {
862 Debug( LDAP_DEBUG_ANY, "re_encode_request new request is:\n",
864 ber_log_dump( LDAP_DEBUG_BER, ldap_debug, ber, 0 );
866 #endif /* LDAP_DEBUG */
873 ldap_find_request_by_msgid( LDAP *ld, ber_int_t msgid )
877 for ( lr = ld->ld_requests; lr != NULL; lr = lr->lr_next ) {
878 if ( msgid == lr->lr_msgid ) {
887 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
889 dn2servers( LDAP *ld, const char *dn ) /* dn can also be a domain.... */
891 char *p, *host, *server_dn, **dxs;
894 LDAPServer *srvlist, *prevsrv, *srv;
896 if (( domain = strrchr( dn, '@' )) != NULL ) {
902 if (( dxs = ldap_getdxbyname( domain )) == NULL ) {
903 ld->ld_errno = LDAP_NO_MEMORY;
909 for ( i = 0; dxs[ i ] != NULL; ++i ) {
910 port = ldap_int_global_options.ldo_defport;
912 if ( strchr( dxs[ i ], ':' ) == NULL ) {
914 } else if ( strlen( dxs[ i ] ) >= 7 &&
915 strncmp( dxs[ i ], "ldap://", 7 ) == 0 ) {
917 if (( p = strchr( host, ':' )) == NULL ) {
923 if (( p = strchr( p, '/' )) != NULL ) {
925 if ( *server_dn == '\0' ) {
933 if ( host != NULL ) { /* found a server we can use */
934 if (( srv = (LDAPServer *)LDAP_CALLOC( 1,
935 sizeof( LDAPServer ))) == NULL ) {
936 free_servers( srvlist );
938 break; /* exit loop & return */
941 /* add to end of list of servers */
942 if ( srvlist == NULL ) {
945 prevsrv->lsrv_next = srv;
950 if (( srv->lsrv_host = LDAP_STRDUP( host )) == NULL ||
951 ( server_dn != NULL && ( srv->lsrv_dn =
952 LDAP_STRDUP( server_dn )) == NULL )) {
953 free_servers( srvlist );
955 break; /* exit loop & return */
957 srv->lsrv_port = port;
961 ldap_value_free( dxs );
963 if ( srvlist == NULL ) {
964 ld->ld_errno = LDAP_SERVER_DOWN;
969 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */