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
18 #include <ac/socket.h>
19 #include <ac/string.h>
21 #include <ac/unistd.h>
26 static LDAPConn *find_connection LDAP_P(( LDAP *ld, LDAPServer *srv, int any ));
27 static void use_connection LDAP_P(( LDAP *ld, LDAPConn *lc ));
28 static void free_servers LDAP_P(( LDAPServer *srvlist ));
30 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
31 static LDAPServer *dn2servers LDAP_P(( LDAP *ld, char *dn ));
32 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
34 static BerElement *re_encode_request LDAP_P(( LDAP *ld, BerElement *origber,
35 int msgid, char **dnp ));
39 ldap_alloc_ber_with_options( LDAP *ld )
43 if (( ber = ber_alloc_t( ld->ld_lberoptions )) == NULLBER ) {
44 ld->ld_errno = LDAP_NO_MEMORY;
45 #ifdef STR_TRANSLATION
47 ldap_set_ber_options( ld, ber );
48 #endif /* STR_TRANSLATION */
56 ldap_set_ber_options( LDAP *ld, BerElement *ber )
58 ber->ber_options = ld->ld_lberoptions;
59 #ifdef STR_TRANSLATION
60 if (( ld->ld_lberoptions & LBER_TRANSLATE_STRINGS ) != 0 ) {
61 ber_set_string_translators( ber,
62 ld->ld_lber_encode_translate_proc,
63 ld->ld_lber_decode_translate_proc );
65 #endif /* STR_TRANSLATION */
70 ldap_send_initial_request(
72 unsigned long msgtype,
76 LDAPServer *servers, *srv;
78 Debug( LDAP_DEBUG_TRACE, "ldap_send_initial_request\n", 0, 0, 0 );
80 if ( ! ber_pvt_sb_in_use(&ld->ld_sb ) ) {
81 /* not connected yet */
83 if (( srv = (LDAPServer *)LDAP_CALLOC( 1, sizeof( LDAPServer ))) ==
84 NULL || ( ld->ld_defhost != NULL && ( srv->lsrv_host =
85 strdup( ld->ld_defhost )) == NULL ))
87 if (srv != NULL) LDAP_FREE( srv );
89 ld->ld_errno = LDAP_NO_MEMORY;
93 srv->lsrv_port = ld->ld_defport;
95 if (( ld->ld_defconn = ldap_new_connection( ld, &srv, 1,1,0 ))
98 if ( ld->ld_defhost != NULL ) LDAP_FREE( srv->lsrv_host );
99 LDAP_FREE( (char *)srv );
101 ld->ld_errno = LDAP_SERVER_DOWN;
104 ++ld->ld_defconn->lconn_refcnt; /* so it never gets closed/freed */
106 Debug( LDAP_DEBUG_TRACE,
107 "ldap_delayed_open successful, ld_host is %s\n",
108 ( ld->ld_host == NULL ) ? "(null)" : ld->ld_host, 0, 0 );
112 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
113 if (( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_DNS ) == LDAP_OPT_ON )
114 && ldap_is_dns_dn( dn ) )
116 if (( servers = dn2servers( ld, dn )) == NULL ) {
122 if ( ldap_debug & LDAP_DEBUG_TRACE ) {
125 for ( srv = servers; srv != NULL;
126 srv = srv->lsrv_next ) {
128 "LDAP server %s: dn %s, port %d\n",
129 srv->lsrv_host, ( srv->lsrv_dn == NULL ) ?
130 "(default)" : srv->lsrv_dn,
134 #endif /* LDAP_DEBUG */
136 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
139 * use of DNS is turned off or this is an X.500 DN...
140 * use our default connection
145 return( ldap_send_server_request( ld, ber, ld->ld_msgid, NULL, servers,
152 ldap_send_server_request( LDAP *ld, BerElement *ber, int msgid, LDAPRequest
153 *parentreq, LDAPServer *srvlist, LDAPConn *lc, int bind )
158 Debug( LDAP_DEBUG_TRACE, "ldap_send_server_request\n", 0, 0, 0 );
161 ld->ld_errno = LDAP_SUCCESS; /* optimistic */
164 if ( srvlist == NULL ) {
167 if (( lc = find_connection( ld, srvlist, 1 )) ==
169 if ( bind && (parentreq != NULL) ) {
170 /* Remember the bind in the parent */
172 ++parentreq->lr_outrefcnt;
174 lc = ldap_new_connection( ld, &srvlist, 0, 1, bind );
176 free_servers( srvlist );
180 if ( lc == NULL || lc->lconn_status != LDAP_CONNST_CONNECTED ) {
182 if ( ld->ld_errno == LDAP_SUCCESS ) {
183 ld->ld_errno = LDAP_SERVER_DOWN;
186 /* Forget about the bind */
187 --parentreq->lr_outrefcnt;
192 use_connection( ld, lc );
193 if (( lr = (LDAPRequest *)LDAP_CALLOC( 1, sizeof( LDAPRequest ))) ==
195 ld->ld_errno = LDAP_NO_MEMORY;
196 ldap_free_connection( ld, lc, 0, 0 );
199 /* Forget about the bind */
200 --parentreq->lr_outrefcnt;
204 lr->lr_msgid = msgid;
205 lr->lr_status = LDAP_REQST_INPROGRESS;
206 lr->lr_res_errno = LDAP_SUCCESS; /* optimistic */
209 if ( parentreq != NULL ) { /* sub-request */
211 /* Increment if we didn't do it before the bind */
212 ++parentreq->lr_outrefcnt;
214 lr->lr_origid = parentreq->lr_origid;
215 lr->lr_parentcnt = parentreq->lr_parentcnt + 1;
216 lr->lr_parent = parentreq;
217 lr->lr_refnext = parentreq->lr_refnext;
218 parentreq->lr_refnext = lr;
219 } else { /* original request */
220 lr->lr_origid = lr->lr_msgid;
223 if (( lr->lr_next = ld->ld_requests ) != NULL ) {
224 lr->lr_next->lr_prev = lr;
226 ld->ld_requests = lr;
229 if ( ber_flush( lc->lconn_sb, ber, 0 ) != 0 ) {
231 if ( errno == EWOULDBLOCK ) {
232 /* need to continue write later */
233 lr->lr_status = LDAP_REQST_WRITING;
234 ldap_mark_select_write( ld, lc->lconn_sb );
237 ld->ld_errno = LDAP_SERVER_DOWN;
238 ldap_free_request( ld, lr );
239 ldap_free_connection( ld, lc, 0, 0 );
246 if ( parentreq == NULL ) {
247 ber->ber_end = ber->ber_ptr;
248 ber->ber_ptr = ber->ber_buf;
251 /* sent -- waiting for a response */
252 ldap_mark_select_read( ld, lc->lconn_sb );
255 ld->ld_errno = LDAP_SUCCESS;
261 ldap_new_connection( LDAP *ld, LDAPServer **srvlistp, int use_ldsb,
262 int connect, int bind )
265 LDAPServer *prevsrv, *srv;
269 * make a new LDAP server connection
270 * XXX open connection synchronously for now
272 if (( lc = (LDAPConn *)LDAP_CALLOC( 1, sizeof( LDAPConn ))) == NULL ||
273 ( !use_ldsb && ( (sb = ber_sockbuf_alloc()) == NULL ))) {
275 LDAP_FREE( (char *)lc );
277 ld->ld_errno = LDAP_NO_MEMORY;
281 lc->lconn_sb = ( use_ldsb ) ? &ld->ld_sb : sb;
286 for ( srv = *srvlistp; srv != NULL; srv = srv->lsrv_next ) {
287 if ( open_ldap_connection( ld, lc->lconn_sb,
288 srv->lsrv_host, srv->lsrv_port,
289 &lc->lconn_krbinstance, 0 ) != -1 ) {
297 ber_sockbuf_free( lc->lconn_sb );
299 LDAP_FREE( (char *)lc );
300 ld->ld_errno = LDAP_SERVER_DOWN;
304 if ( prevsrv == NULL ) {
305 *srvlistp = srv->lsrv_next;
307 prevsrv->lsrv_next = srv->lsrv_next;
309 lc->lconn_server = srv;
312 lc->lconn_status = LDAP_CONNST_CONNECTED;
313 lc->lconn_next = ld->ld_conns;
317 * XXX for now, we always do a synchronous bind. This will have
318 * to change in the long run...
321 int err, freepasswd, authmethod;
322 char *binddn, *passwd;
323 LDAPConn *savedefconn;
325 freepasswd = err = 0;
327 if ( ld->ld_rebindproc == 0 ) {
328 binddn = passwd = "";
329 authmethod = LDAP_AUTH_SIMPLE;
331 if (( err = (*ld->ld_rebindproc)( ld, &binddn, &passwd,
332 &authmethod, 0 )) == LDAP_SUCCESS ) {
342 savedefconn = ld->ld_defconn;
344 ++lc->lconn_refcnt; /* avoid premature free */
346 if ( ldap_bind_s( ld, binddn, passwd, authmethod ) !=
351 ld->ld_defconn = savedefconn;
355 (*ld->ld_rebindproc)( ld, &binddn, &passwd,
360 ldap_free_connection( ld, lc, 1, 0 );
370 find_connection( LDAP *ld, LDAPServer *srv, int any )
372 * return an existing connection (if any) to the server srv
373 * if "any" is non-zero, check for any server in the "srv" chain
379 for ( lc = ld->ld_conns; lc != NULL; lc = lc->lconn_next ) {
380 for ( ls = srv; ls != NULL; ls = ls->lsrv_next ) {
381 if ( lc->lconn_server->lsrv_host != NULL &&
382 ls->lsrv_host != NULL && strcasecmp(
383 ls->lsrv_host, lc->lconn_server->lsrv_host ) == 0
384 && ls->lsrv_port == lc->lconn_server->lsrv_port ) {
399 use_connection( LDAP *ld, LDAPConn *lc )
402 lc->lconn_lastused = time( 0 );
407 ldap_free_connection( LDAP *ld, LDAPConn *lc, int force, int unbind )
409 LDAPConn *tmplc, *prevlc;
411 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection\n", 0, 0, 0 );
413 if ( force || --lc->lconn_refcnt <= 0 ) {
414 if ( lc->lconn_status == LDAP_CONNST_CONNECTED ) {
415 ldap_mark_select_clear( ld, lc->lconn_sb );
417 ldap_send_unbind( ld, lc->lconn_sb, NULL, NULL );
419 ldap_close_connection( lc->lconn_sb );
420 ber_pvt_sb_destroy( lc->lconn_sb );
421 if( lc->lconn_ber != NULL ) {
422 ber_free( lc->lconn_ber, 1 );
426 for ( tmplc = ld->ld_conns; tmplc != NULL;
427 tmplc = tmplc->lconn_next ) {
429 if ( prevlc == NULL ) {
430 ld->ld_conns = tmplc->lconn_next;
432 prevlc->lconn_next = tmplc->lconn_next;
438 free_servers( lc->lconn_server );
439 if ( lc->lconn_krbinstance != NULL ) {
440 LDAP_FREE( lc->lconn_krbinstance );
442 if ( lc->lconn_sb != &ld->ld_sb ) {
443 ber_sockbuf_free( lc->lconn_sb );
446 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection: actually freed\n",
449 lc->lconn_lastused = time( 0 );
450 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection: refcnt %d\n",
451 lc->lconn_refcnt, 0, 0 );
458 ldap_dump_connection( LDAP *ld, LDAPConn *lconns, int all )
463 fprintf( stderr, "** Connection%s:\n", all ? "s" : "" );
464 for ( lc = lconns; lc != NULL; lc = lc->lconn_next ) {
465 if ( lc->lconn_server != NULL ) {
466 fprintf( stderr, "* host: %s port: %d%s\n",
467 ( lc->lconn_server->lsrv_host == NULL ) ? "(null)"
468 : lc->lconn_server->lsrv_host,
469 lc->lconn_server->lsrv_port, ( lc->lconn_sb ==
470 &ld->ld_sb ) ? " (default)" : "" );
472 fprintf( stderr, " refcnt: %d status: %s\n", lc->lconn_refcnt,
473 ( lc->lconn_status == LDAP_CONNST_NEEDSOCKET ) ?
474 "NeedSocket" : ( lc->lconn_status ==
475 LDAP_CONNST_CONNECTING ) ? "Connecting" : "Connected" );
476 fprintf( stderr, " last used: %s\n",
477 ldap_pvt_ctime( &lc->lconn_lastused, timebuf ));
486 ldap_dump_requests_and_responses( LDAP *ld )
491 fprintf( stderr, "** Outstanding Requests:\n" );
492 if (( lr = ld->ld_requests ) == NULL ) {
493 fprintf( stderr, " Empty\n" );
495 for ( ; lr != NULL; lr = lr->lr_next ) {
496 fprintf( stderr, " * msgid %d, origid %d, status %s\n",
497 lr->lr_msgid, lr->lr_origid, ( lr->lr_status ==
498 LDAP_REQST_INPROGRESS ) ? "InProgress" :
499 ( lr->lr_status == LDAP_REQST_CHASINGREFS ) ? "ChasingRefs" :
500 ( lr->lr_status == LDAP_REQST_NOTCONNECTED ) ? "NotConnected" :
502 fprintf( stderr, " outstanding referrals %d, parent count %d\n",
503 lr->lr_outrefcnt, lr->lr_parentcnt );
506 fprintf( stderr, "** Response Queue:\n" );
507 if (( lm = ld->ld_responses ) == NULLMSG ) {
508 fprintf( stderr, " Empty\n" );
510 for ( ; lm != NULLMSG; lm = lm->lm_next ) {
511 fprintf( stderr, " * msgid %d, type %d\n",
512 lm->lm_msgid, lm->lm_msgtype );
513 if (( l = lm->lm_chain ) != NULL ) {
514 fprintf( stderr, " chained responses:\n" );
515 for ( ; l != NULLMSG; l = l->lm_chain ) {
517 " * msgid %d, type %d\n",
518 l->lm_msgid, l->lm_msgtype );
523 #endif /* LDAP_DEBUG */
527 ldap_free_request( LDAP *ld, LDAPRequest *lr )
529 LDAPRequest *tmplr, *nextlr;
531 Debug( LDAP_DEBUG_TRACE, "ldap_free_request (origid %d, msgid %d)\n",
532 lr->lr_origid, lr->lr_msgid, 0 );
534 if ( lr->lr_parent != NULL ) {
535 --lr->lr_parent->lr_outrefcnt;
537 /* free all referrals (child requests) */
538 for ( tmplr = lr->lr_refnext; tmplr != NULL; tmplr = nextlr ) {
539 nextlr = tmplr->lr_refnext;
540 ldap_free_request( ld, tmplr );
544 if ( lr->lr_prev == NULL ) {
545 ld->ld_requests = lr->lr_next;
547 lr->lr_prev->lr_next = lr->lr_next;
550 if ( lr->lr_next != NULL ) {
551 lr->lr_next->lr_prev = lr->lr_prev;
554 if ( lr->lr_ber != NULL ) {
555 ber_free( lr->lr_ber, 1 );
558 if ( lr->lr_res_error != NULL ) {
559 LDAP_FREE( lr->lr_res_error );
562 if ( lr->lr_res_matched != NULL ) {
563 LDAP_FREE( lr->lr_res_matched );
571 free_servers( LDAPServer *srvlist )
575 while ( srvlist != NULL ) {
576 nextsrv = srvlist->lsrv_next;
577 if ( srvlist->lsrv_dn != NULL ) {
578 LDAP_FREE( srvlist->lsrv_dn );
580 if ( srvlist->lsrv_host != NULL ) {
581 LDAP_FREE( srvlist->lsrv_host );
583 LDAP_FREE( srvlist );
590 * XXX merging of errors in this routine needs to be improved
593 ldap_chase_referrals( LDAP *ld, LDAPRequest *lr, char **errstrp, int *hadrefp )
595 int rc, count, len, newdn;
596 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
598 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
599 char *p, *ports, *ref, *tmpref, *refdn, *unfollowed;
600 LDAPRequest *origreq;
604 Debug( LDAP_DEBUG_TRACE, "ldap_chase_referrals\n", 0, 0, 0 );
606 ld->ld_errno = LDAP_SUCCESS; /* optimistic */
609 if ( *errstrp == NULL ) {
613 len = strlen( *errstrp );
614 for ( p = *errstrp; len >= LDAP_REF_STR_LEN; ++p, --len ) {
615 if (( *p == 'R' || *p == 'r' ) && strncasecmp( p,
616 LDAP_REF_STR, LDAP_REF_STR_LEN ) == 0 ) {
618 p += LDAP_REF_STR_LEN;
623 if ( len < LDAP_REF_STR_LEN ) {
627 if ( lr->lr_parentcnt >= ld->ld_refhoplimit ) {
628 Debug( LDAP_DEBUG_ANY,
629 "more than %d referral hops (dropping)\n",
630 ld->ld_refhoplimit, 0, 0 );
631 /* XXX report as error in ld->ld_errno? */
635 /* find original request */
636 for ( origreq = lr; origreq->lr_parent != NULL;
637 origreq = origreq->lr_parent ) {
644 /* parse out & follow referrals */
645 for ( ref = p; rc == 0 && ref != NULL; ref = p ) {
646 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
648 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
650 if (( p = strchr( ref, '\n' )) != NULL ) {
657 if ( len > LDAP_LDAP_REF_STR_LEN && strncasecmp( ref,
658 LDAP_LDAP_REF_STR, LDAP_LDAP_REF_STR_LEN ) == 0 ) {
659 Debug( LDAP_DEBUG_TRACE,
660 "chasing LDAP referral: <%s>\n", ref, 0, 0 );
661 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
663 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
664 tmpref = ref + LDAP_LDAP_REF_STR_LEN;
665 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
666 } else if ( len > LDAP_DX_REF_STR_LEN && strncasecmp( ref,
667 LDAP_DX_REF_STR, LDAP_DX_REF_STR_LEN ) == 0 ) {
668 Debug( LDAP_DEBUG_TRACE,
669 "chasing DX referral: <%s>\n", ref, 0, 0 );
670 tmpref = ref + LDAP_DX_REF_STR_LEN;
671 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
673 Debug( LDAP_DEBUG_TRACE,
674 "ignoring unknown referral <%s>\n", ref, 0, 0 );
675 rc = ldap_append_referral( ld, &unfollowed, ref );
681 if (( refdn = strchr( tmpref, '/' )) != NULL ) {
688 if (( ber = re_encode_request( ld, origreq->lr_ber,
689 ++ld->ld_msgid, &refdn )) == NULL ) {
693 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
695 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
696 if (( srv = (LDAPServer *)LDAP_CALLOC( 1,
697 sizeof( LDAPServer ))) == NULL ) {
699 ld->ld_errno = LDAP_NO_MEMORY;
703 if (( srv->lsrv_host = strdup( tmpref )) == NULL ) {
704 LDAP_FREE( (char *)srv );
706 ld->ld_errno = LDAP_NO_MEMORY;
710 if (( ports = strchr( srv->lsrv_host, ':' )) != NULL ) {
712 srv->lsrv_port = atoi( ports );
714 srv->lsrv_port = ldap_int_global_options.ldo_defport;
716 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
718 srv = dn2servers( ld, tmpref );
720 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
722 if ( srv != NULL && ldap_send_server_request( ld, ber, ld->ld_msgid,
723 lr, srv, NULL, 1 ) >= 0 ) {
726 Debug( LDAP_DEBUG_ANY,
727 "Unable to chase referral (%s)\n",
728 ldap_err2string( ld->ld_errno ), 0, 0 );
729 rc = ldap_append_referral( ld, &unfollowed, ref );
732 if ( !newdn && refdn != NULL ) {
737 LDAP_FREE( *errstrp );
738 *errstrp = unfollowed;
740 return(( rc == 0 ) ? count : rc );
745 ldap_append_referral( LDAP *ld, char **referralsp, char *s )
749 if ( *referralsp == NULL ) {
751 *referralsp = (char *)LDAP_MALLOC( strlen( s ) + LDAP_REF_STR_LEN
755 *referralsp = (char *)LDAP_REALLOC( *referralsp,
756 strlen( *referralsp ) + strlen( s ) + 2 );
759 if ( *referralsp == NULL ) {
760 ld->ld_errno = LDAP_NO_MEMORY;
765 strcpy( *referralsp, LDAP_REF_STR );
767 strcat( *referralsp, "\n" );
769 strcat( *referralsp, s );
777 re_encode_request( LDAP *ld, BerElement *origber, int msgid, char **dnp )
780 * XXX this routine knows way too much about how the lber library works!
782 unsigned long along, tag;
785 BerElement tmpber, *ber;
788 Debug( LDAP_DEBUG_TRACE,
789 "re_encode_request: new msgid %d, new dn <%s>\n",
790 msgid, ( *dnp == NULL ) ? "NONE" : *dnp, 0 );
795 * all LDAP requests are sequences that start with a message id,
796 * followed by a sequence that is tagged with the operation code
798 if ( ber_scanf( &tmpber, "{i", /*}*/ &along ) != LDAP_TAG_MSGID ||
799 ( tag = ber_skip_tag( &tmpber, &along )) == LBER_DEFAULT ) {
800 ld->ld_errno = LDAP_DECODING_ERROR;
804 if (( ber = ldap_alloc_ber_with_options( ld )) == NULLBER ) {
808 /* bind requests have a version number before the DN & other stuff */
809 if ( tag == LDAP_REQ_BIND && ber_get_int( &tmpber, (long *)&ver ) ==
811 ld->ld_errno = LDAP_DECODING_ERROR;
816 /* the rest of the request is the DN followed by other stuff */
817 if ( ber_get_stringa( &tmpber, &orig_dn ) == LBER_DEFAULT ) {
822 if ( *dnp == NULL ) {
825 LDAP_FREE( orig_dn );
828 if ( tag == LDAP_REQ_BIND ) {
829 rc = ber_printf( ber, "{it{is" /*}}*/, msgid, tag, ver, *dnp );
831 rc = ber_printf( ber, "{it{s" /*}}*/, msgid, tag, *dnp );
839 if ( ber_write( ber, tmpber.ber_ptr, ( tmpber.ber_end -
840 tmpber.ber_ptr ), 0 ) != ( tmpber.ber_end - tmpber.ber_ptr ) ||
841 ber_printf( ber, /*{{*/ "}}" ) == -1 ) {
842 ld->ld_errno = LDAP_ENCODING_ERROR;
848 if ( ldap_debug & LDAP_DEBUG_PACKETS ) {
849 Debug( LDAP_DEBUG_ANY, "re_encode_request new request is:\n",
851 ber_log_dump( LDAP_DEBUG_BER, ldap_debug, ber, 0 );
853 #endif /* LDAP_DEBUG */
860 ldap_find_request_by_msgid( LDAP *ld, int msgid )
864 for ( lr = ld->ld_requests; lr != NULL; lr = lr->lr_next ) {
865 if ( msgid == lr->lr_msgid ) {
874 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
876 dn2servers( LDAP *ld, char *dn ) /* dn can also be a domain.... */
878 char *p, *domain, *host, *server_dn, **dxs;
880 LDAPServer *srvlist, *prevsrv, *srv;
882 if (( domain = strrchr( dn, '@' )) != NULL ) {
888 if (( dxs = ldap_getdxbyname( domain )) == NULL ) {
889 ld->ld_errno = LDAP_NO_MEMORY;
895 for ( i = 0; dxs[ i ] != NULL; ++i ) {
896 port = openldap_ldap_global_options.ldo_defport;
898 if ( strchr( dxs[ i ], ':' ) == NULL ) {
900 } else if ( strlen( dxs[ i ] ) >= 7 &&
901 strncmp( dxs[ i ], "ldap://", 7 ) == 0 ) {
903 if (( p = strchr( host, ':' )) == NULL ) {
909 if (( p = strchr( p, '/' )) != NULL ) {
911 if ( *server_dn == '\0' ) {
919 if ( host != NULL ) { /* found a server we can use */
920 if (( srv = (LDAPServer *)LDAP_CALLOC( 1,
921 sizeof( LDAPServer ))) == NULL ) {
922 free_servers( srvlist );
924 break; /* exit loop & return */
927 /* add to end of list of servers */
928 if ( srvlist == NULL ) {
931 prevsrv->lsrv_next = srv;
936 if (( srv->lsrv_host = strdup( host )) == NULL ||
937 ( server_dn != NULL && ( srv->lsrv_dn =
938 strdup( server_dn )) == NULL )) {
939 free_servers( srvlist );
941 break; /* exit loop & return */
943 srv->lsrv_port = port;
947 ldap_value_free( dxs );
949 if ( srvlist == NULL ) {
950 ld->ld_errno = LDAP_SERVER_DOWN;
955 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */