3 * Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved.
4 * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
7 * Copyright (c) 1995 Regents of the University of Michigan.
10 * request.c - sending of ldap requests; handling of referrals
17 #include <ac/stdlib.h>
20 #include <ac/socket.h>
21 #include <ac/string.h>
23 #include <ac/unistd.h>
28 static LDAPConn *find_connection LDAP_P(( LDAP *ld, LDAPServer *srv, int any ));
29 static void use_connection LDAP_P(( LDAP *ld, LDAPConn *lc ));
30 static void free_servers LDAP_P(( LDAPServer *srvlist ));
32 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
33 static LDAPServer *dn2servers LDAP_P(( LDAP *ld, const char *dn ));
34 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
36 static BerElement *re_encode_request LDAP_P((
44 ldap_alloc_ber_with_options( LDAP *ld )
48 if (( ber = ber_alloc_t( ld->ld_lberoptions )) == NULL ) {
49 ld->ld_errno = LDAP_NO_MEMORY;
50 #ifdef STR_TRANSLATION
52 ldap_set_ber_options( ld, ber );
53 #endif /* STR_TRANSLATION */
61 ldap_set_ber_options( LDAP *ld, BerElement *ber )
63 ber->ber_options = ld->ld_lberoptions;
64 #ifdef STR_TRANSLATION
65 if (( ld->ld_lberoptions & LBER_TRANSLATE_STRINGS ) != 0 ) {
66 ber_set_string_translators( ber,
67 ld->ld_lber_encode_translate_proc,
68 ld->ld_lber_decode_translate_proc );
70 #endif /* STR_TRANSLATION */
75 ldap_send_initial_request(
81 LDAPServer *servers, *srv;
83 Debug( LDAP_DEBUG_TRACE, "ldap_send_initial_request\n", 0, 0, 0 );
85 if ( ! ber_pvt_sb_in_use(&ld->ld_sb ) ) {
86 /* not connected yet */
88 if (( srv = (LDAPServer *)LDAP_CALLOC( 1, sizeof( LDAPServer ))) ==
89 NULL || ( ld->ld_defhost != NULL && ( srv->lsrv_host =
90 LDAP_STRDUP( ld->ld_defhost )) == NULL ))
92 if (srv != NULL) LDAP_FREE( srv );
94 ld->ld_errno = LDAP_NO_MEMORY;
98 srv->lsrv_port = ld->ld_defport;
100 if (( ld->ld_defconn = ldap_new_connection( ld, &srv, 1,1,0 ))
103 if ( ld->ld_defhost != NULL ) LDAP_FREE( srv->lsrv_host );
104 LDAP_FREE( (char *)srv );
106 ld->ld_errno = LDAP_SERVER_DOWN;
109 ++ld->ld_defconn->lconn_refcnt; /* so it never gets closed/freed */
111 Debug( LDAP_DEBUG_TRACE,
112 "ldap_delayed_open successful, ld_host is %s\n",
113 ( ld->ld_host == NULL ) ? "(null)" : ld->ld_host, 0, 0 );
117 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
118 if ( LDAP_BOOL_GET(&ld->ld_options, LDAP_BOOL_DNS )
119 && ldap_is_dns_dn( dn ) )
121 if (( servers = dn2servers( ld, dn )) == NULL ) {
127 if ( ldap_debug & LDAP_DEBUG_TRACE ) {
130 for ( srv = servers; srv != NULL;
131 srv = srv->lsrv_next ) {
133 "LDAP server %s: dn %s, port %d\n",
134 srv->lsrv_host, ( srv->lsrv_dn == NULL ) ?
135 "(default)" : srv->lsrv_dn,
139 #endif /* LDAP_DEBUG */
141 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
144 * use of DNS is turned off or this is an X.500 DN...
145 * use our default connection
150 return( ldap_send_server_request( ld, ber, ld->ld_msgid, NULL, servers,
157 ldap_send_server_request(
161 LDAPRequest *parentreq,
169 Debug( LDAP_DEBUG_TRACE, "ldap_send_server_request\n", 0, 0, 0 );
172 ld->ld_errno = LDAP_SUCCESS; /* optimistic */
175 if ( srvlist == NULL ) {
178 if (( lc = find_connection( ld, srvlist, 1 )) ==
180 if ( bind && (parentreq != NULL) ) {
181 /* Remember the bind in the parent */
183 ++parentreq->lr_outrefcnt;
185 lc = ldap_new_connection( ld, &srvlist, 0, 1, bind );
187 free_servers( srvlist );
191 if ( lc == NULL || lc->lconn_status != LDAP_CONNST_CONNECTED ) {
193 if ( ld->ld_errno == LDAP_SUCCESS ) {
194 ld->ld_errno = LDAP_SERVER_DOWN;
197 /* Forget about the bind */
198 --parentreq->lr_outrefcnt;
203 use_connection( ld, lc );
204 if (( lr = (LDAPRequest *)LDAP_CALLOC( 1, sizeof( LDAPRequest ))) ==
206 ld->ld_errno = LDAP_NO_MEMORY;
207 ldap_free_connection( ld, lc, 0, 0 );
210 /* Forget about the bind */
211 --parentreq->lr_outrefcnt;
215 lr->lr_msgid = msgid;
216 lr->lr_status = LDAP_REQST_INPROGRESS;
217 lr->lr_res_errno = LDAP_SUCCESS; /* optimistic */
220 if ( parentreq != NULL ) { /* sub-request */
222 /* Increment if we didn't do it before the bind */
223 ++parentreq->lr_outrefcnt;
225 lr->lr_origid = parentreq->lr_origid;
226 lr->lr_parentcnt = parentreq->lr_parentcnt + 1;
227 lr->lr_parent = parentreq;
228 lr->lr_refnext = parentreq->lr_refnext;
229 parentreq->lr_refnext = lr;
230 } else { /* original request */
231 lr->lr_origid = lr->lr_msgid;
234 if (( lr->lr_next = ld->ld_requests ) != NULL ) {
235 lr->lr_next->lr_prev = lr;
237 ld->ld_requests = lr;
240 if ( ber_flush( lc->lconn_sb, ber, 0 ) != 0 ) {
242 if ( errno == EWOULDBLOCK ) {
243 /* need to continue write later */
244 lr->lr_status = LDAP_REQST_WRITING;
245 ldap_mark_select_write( ld, lc->lconn_sb );
248 ld->ld_errno = LDAP_SERVER_DOWN;
249 ldap_free_request( ld, lr );
250 ldap_free_connection( ld, lc, 0, 0 );
257 if ( parentreq == NULL ) {
258 ber->ber_end = ber->ber_ptr;
259 ber->ber_ptr = ber->ber_buf;
262 /* sent -- waiting for a response */
263 ldap_mark_select_read( ld, lc->lconn_sb );
266 ld->ld_errno = LDAP_SUCCESS;
272 ldap_new_connection( LDAP *ld, LDAPServer **srvlistp, int use_ldsb,
273 int connect, int bind )
276 LDAPServer *prevsrv, *srv;
280 * make a new LDAP server connection
281 * XXX open connection synchronously for now
283 if (( lc = (LDAPConn *)LDAP_CALLOC( 1, sizeof( LDAPConn ))) == NULL ||
284 ( !use_ldsb && ( (sb = ber_sockbuf_alloc()) == NULL ))) {
286 LDAP_FREE( (char *)lc );
288 ld->ld_errno = LDAP_NO_MEMORY;
292 lc->lconn_sb = ( use_ldsb ) ? &ld->ld_sb : sb;
297 for ( srv = *srvlistp; srv != NULL; srv = srv->lsrv_next ) {
298 if ( open_ldap_connection( ld, lc->lconn_sb,
299 srv->lsrv_host, srv->lsrv_port,
300 &lc->lconn_krbinstance, 0 ) != -1 ) {
308 ber_sockbuf_free( lc->lconn_sb );
310 LDAP_FREE( (char *)lc );
311 ld->ld_errno = LDAP_SERVER_DOWN;
315 if ( prevsrv == NULL ) {
316 *srvlistp = srv->lsrv_next;
318 prevsrv->lsrv_next = srv->lsrv_next;
320 lc->lconn_server = srv;
323 lc->lconn_status = LDAP_CONNST_CONNECTED;
324 lc->lconn_next = ld->ld_conns;
328 * XXX for now, we always do a synchronous bind. This will have
329 * to change in the long run...
332 int err, freepasswd, authmethod;
333 char *binddn, *passwd;
334 LDAPConn *savedefconn;
336 freepasswd = err = 0;
338 if ( ld->ld_rebindproc == 0 ) {
339 binddn = passwd = "";
340 authmethod = LDAP_AUTH_SIMPLE;
342 if (( err = (*ld->ld_rebindproc)( ld, &binddn, &passwd,
343 &authmethod, 0 )) == LDAP_SUCCESS ) {
353 savedefconn = ld->ld_defconn;
355 ++lc->lconn_refcnt; /* avoid premature free */
357 if ( ldap_bind_s( ld, binddn, passwd, authmethod ) !=
362 ld->ld_defconn = savedefconn;
366 (*ld->ld_rebindproc)( ld, &binddn, &passwd,
371 ldap_free_connection( ld, lc, 1, 0 );
381 find_connection( LDAP *ld, LDAPServer *srv, int any )
383 * return an existing connection (if any) to the server srv
384 * if "any" is non-zero, check for any server in the "srv" chain
390 for ( lc = ld->ld_conns; lc != NULL; lc = lc->lconn_next ) {
391 for ( ls = srv; ls != NULL; ls = ls->lsrv_next ) {
392 if ( lc->lconn_server->lsrv_host != NULL &&
393 ls->lsrv_host != NULL && strcasecmp(
394 ls->lsrv_host, lc->lconn_server->lsrv_host ) == 0
395 && ls->lsrv_port == lc->lconn_server->lsrv_port ) {
410 use_connection( LDAP *ld, LDAPConn *lc )
413 lc->lconn_lastused = time( NULL );
418 ldap_free_connection( LDAP *ld, LDAPConn *lc, int force, int unbind )
420 LDAPConn *tmplc, *prevlc;
422 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection\n", 0, 0, 0 );
424 if ( force || --lc->lconn_refcnt <= 0 ) {
425 if ( lc->lconn_status == LDAP_CONNST_CONNECTED ) {
426 ldap_mark_select_clear( ld, lc->lconn_sb );
428 ldap_send_unbind( ld, lc->lconn_sb, NULL, NULL );
430 ldap_close_connection( lc->lconn_sb );
431 ber_pvt_sb_destroy( lc->lconn_sb );
432 if( lc->lconn_ber != NULL ) {
433 ber_free( lc->lconn_ber, 1 );
437 for ( tmplc = ld->ld_conns; tmplc != NULL;
438 tmplc = tmplc->lconn_next ) {
440 if ( prevlc == NULL ) {
441 ld->ld_conns = tmplc->lconn_next;
443 prevlc->lconn_next = tmplc->lconn_next;
449 free_servers( lc->lconn_server );
450 if ( lc->lconn_krbinstance != NULL ) {
451 LDAP_FREE( lc->lconn_krbinstance );
453 if ( lc->lconn_sb != &ld->ld_sb ) {
454 ber_sockbuf_free( lc->lconn_sb );
457 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection: actually freed\n",
460 lc->lconn_lastused = time( NULL );
461 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection: refcnt %d\n",
462 lc->lconn_refcnt, 0, 0 );
469 ldap_dump_connection( LDAP *ld, LDAPConn *lconns, int all )
474 fprintf( stderr, "** Connection%s:\n", all ? "s" : "" );
475 for ( lc = lconns; lc != NULL; lc = lc->lconn_next ) {
476 if ( lc->lconn_server != NULL ) {
477 fprintf( stderr, "* host: %s port: %d%s\n",
478 ( lc->lconn_server->lsrv_host == NULL ) ? "(null)"
479 : lc->lconn_server->lsrv_host,
480 lc->lconn_server->lsrv_port, ( lc->lconn_sb ==
481 &ld->ld_sb ) ? " (default)" : "" );
483 fprintf( stderr, " refcnt: %d status: %s\n", lc->lconn_refcnt,
484 ( lc->lconn_status == LDAP_CONNST_NEEDSOCKET ) ?
485 "NeedSocket" : ( lc->lconn_status ==
486 LDAP_CONNST_CONNECTING ) ? "Connecting" : "Connected" );
487 fprintf( stderr, " last used: %s\n",
488 ldap_pvt_ctime( &lc->lconn_lastused, timebuf ));
497 ldap_dump_requests_and_responses( LDAP *ld )
502 fprintf( stderr, "** Outstanding Requests:\n" );
503 if (( lr = ld->ld_requests ) == NULL ) {
504 fprintf( stderr, " Empty\n" );
506 for ( ; lr != NULL; lr = lr->lr_next ) {
507 fprintf( stderr, " * msgid %d, origid %d, status %s\n",
508 lr->lr_msgid, lr->lr_origid, ( lr->lr_status ==
509 LDAP_REQST_INPROGRESS ) ? "InProgress" :
510 ( lr->lr_status == LDAP_REQST_CHASINGREFS ) ? "ChasingRefs" :
511 ( lr->lr_status == LDAP_REQST_NOTCONNECTED ) ? "NotConnected" :
513 fprintf( stderr, " outstanding referrals %d, parent count %d\n",
514 lr->lr_outrefcnt, lr->lr_parentcnt );
517 fprintf( stderr, "** Response Queue:\n" );
518 if (( lm = ld->ld_responses ) == NULL ) {
519 fprintf( stderr, " Empty\n" );
521 for ( ; lm != NULL; lm = lm->lm_next ) {
522 fprintf( stderr, " * msgid %d, type %lu\n",
523 lm->lm_msgid, (unsigned long) lm->lm_msgtype );
524 if (( l = lm->lm_chain ) != NULL ) {
525 fprintf( stderr, " chained responses:\n" );
526 for ( ; l != NULL; l = l->lm_chain ) {
528 " * msgid %d, type %lu\n",
530 (unsigned long) l->lm_msgtype );
535 #endif /* LDAP_DEBUG */
539 ldap_free_request( LDAP *ld, LDAPRequest *lr )
541 LDAPRequest *tmplr, *nextlr;
543 Debug( LDAP_DEBUG_TRACE, "ldap_free_request (origid %d, msgid %d)\n",
544 lr->lr_origid, lr->lr_msgid, 0 );
546 if ( lr->lr_parent != NULL ) {
547 --lr->lr_parent->lr_outrefcnt;
549 /* free all referrals (child requests) */
550 for ( tmplr = lr->lr_refnext; tmplr != NULL; tmplr = nextlr ) {
551 nextlr = tmplr->lr_refnext;
552 ldap_free_request( ld, tmplr );
556 if ( lr->lr_prev == NULL ) {
557 ld->ld_requests = lr->lr_next;
559 lr->lr_prev->lr_next = lr->lr_next;
562 if ( lr->lr_next != NULL ) {
563 lr->lr_next->lr_prev = lr->lr_prev;
566 if ( lr->lr_ber != NULL ) {
567 ber_free( lr->lr_ber, 1 );
570 if ( lr->lr_res_error != NULL ) {
571 LDAP_FREE( lr->lr_res_error );
574 if ( lr->lr_res_matched != NULL ) {
575 LDAP_FREE( lr->lr_res_matched );
583 free_servers( LDAPServer *srvlist )
587 while ( srvlist != NULL ) {
588 nextsrv = srvlist->lsrv_next;
589 if ( srvlist->lsrv_dn != NULL ) {
590 LDAP_FREE( srvlist->lsrv_dn );
592 if ( srvlist->lsrv_host != NULL ) {
593 LDAP_FREE( srvlist->lsrv_host );
595 LDAP_FREE( srvlist );
602 * XXX merging of errors in this routine needs to be improved
605 ldap_chase_referrals( LDAP *ld, LDAPRequest *lr, char **errstrp, int *hadrefp )
607 int rc, count, len, newdn;
608 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
610 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
611 char *p, *ports, *ref, *tmpref, *refdn, *unfollowed;
612 LDAPRequest *origreq;
616 Debug( LDAP_DEBUG_TRACE, "ldap_chase_referrals\n", 0, 0, 0 );
618 ld->ld_errno = LDAP_SUCCESS; /* optimistic */
621 if ( *errstrp == NULL ) {
625 len = strlen( *errstrp );
626 for ( p = *errstrp; len >= LDAP_REF_STR_LEN; ++p, --len ) {
627 if (( *p == 'R' || *p == 'r' ) && strncasecmp( p,
628 LDAP_REF_STR, LDAP_REF_STR_LEN ) == 0 ) {
630 p += LDAP_REF_STR_LEN;
635 if ( len < LDAP_REF_STR_LEN ) {
639 if ( lr->lr_parentcnt >= ld->ld_refhoplimit ) {
640 Debug( LDAP_DEBUG_ANY,
641 "more than %d referral hops (dropping)\n",
642 ld->ld_refhoplimit, 0, 0 );
643 /* XXX report as error in ld->ld_errno? */
647 /* find original request */
648 for ( origreq = lr; origreq->lr_parent != NULL;
649 origreq = origreq->lr_parent ) {
656 /* parse out & follow referrals */
657 for ( ref = p; rc == 0 && ref != NULL; ref = p ) {
658 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
660 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
662 if (( p = strchr( ref, '\n' )) != NULL ) {
669 if ( len > LDAP_LDAP_REF_STR_LEN && strncasecmp( ref,
670 LDAP_LDAP_REF_STR, LDAP_LDAP_REF_STR_LEN ) == 0 ) {
671 Debug( LDAP_DEBUG_TRACE,
672 "chasing LDAP referral: <%s>\n", ref, 0, 0 );
673 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
675 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
676 tmpref = ref + LDAP_LDAP_REF_STR_LEN;
677 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
678 } else if ( len > LDAP_DX_REF_STR_LEN && strncasecmp( ref,
679 LDAP_DX_REF_STR, LDAP_DX_REF_STR_LEN ) == 0 ) {
680 Debug( LDAP_DEBUG_TRACE,
681 "chasing DX referral: <%s>\n", ref, 0, 0 );
682 tmpref = ref + LDAP_DX_REF_STR_LEN;
683 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
685 Debug( LDAP_DEBUG_TRACE,
686 "ignoring unknown referral <%s>\n", ref, 0, 0 );
687 rc = ldap_append_referral( ld, &unfollowed, ref );
693 if (( refdn = strchr( tmpref, '/' )) != NULL ) {
700 if (( ber = re_encode_request( ld, origreq->lr_ber,
701 ++ld->ld_msgid, &refdn )) == NULL ) {
705 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
707 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
708 if (( srv = (LDAPServer *)LDAP_CALLOC( 1,
709 sizeof( LDAPServer ))) == NULL ) {
711 ld->ld_errno = LDAP_NO_MEMORY;
715 if (( srv->lsrv_host = LDAP_STRDUP( tmpref )) == NULL ) {
716 LDAP_FREE( (char *)srv );
718 ld->ld_errno = LDAP_NO_MEMORY;
722 if (( ports = strchr( srv->lsrv_host, ':' )) != NULL ) {
724 srv->lsrv_port = atoi( ports );
726 srv->lsrv_port = ldap_int_global_options.ldo_defport;
728 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
730 srv = dn2servers( ld, tmpref );
732 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */
734 if ( srv != NULL && ldap_send_server_request( ld, ber, ld->ld_msgid,
735 lr, srv, NULL, 1 ) >= 0 ) {
738 Debug( LDAP_DEBUG_ANY,
739 "Unable to chase referral (%s)\n",
740 ldap_err2string( ld->ld_errno ), 0, 0 );
741 rc = ldap_append_referral( ld, &unfollowed, ref );
744 if ( !newdn && refdn != NULL ) {
749 LDAP_FREE( *errstrp );
750 *errstrp = unfollowed;
752 return(( rc == 0 ) ? count : rc );
757 ldap_append_referral( LDAP *ld, char **referralsp, char *s )
761 if ( *referralsp == NULL ) {
763 *referralsp = (char *)LDAP_MALLOC( strlen( s ) + LDAP_REF_STR_LEN
767 *referralsp = (char *)LDAP_REALLOC( *referralsp,
768 strlen( *referralsp ) + strlen( s ) + 2 );
771 if ( *referralsp == NULL ) {
772 ld->ld_errno = LDAP_NO_MEMORY;
777 strcpy( *referralsp, LDAP_REF_STR );
779 strcat( *referralsp, "\n" );
781 strcat( *referralsp, s );
789 re_encode_request( LDAP *ld, BerElement *origber, ber_int_t msgid, char **dnp )
792 * XXX this routine knows way too much about how the lber library works!
799 BerElement tmpber, *ber;
802 Debug( LDAP_DEBUG_TRACE,
803 "re_encode_request: new msgid %ld, new dn <%s>\n",
804 (long) msgid, ( *dnp == NULL ) ? "NONE" : *dnp, 0 );
809 * all LDAP requests are sequences that start with a message id,
810 * followed by a sequence that is tagged with the operation code
812 if ( ber_scanf( &tmpber, "{i", /*}*/ &along ) != LDAP_TAG_MSGID ||
813 ( tag = ber_skip_tag( &tmpber, &len )) == LBER_DEFAULT ) {
814 ld->ld_errno = LDAP_DECODING_ERROR;
818 if (( ber = ldap_alloc_ber_with_options( ld )) == NULL ) {
822 /* bind requests have a version number before the DN & other stuff */
823 if ( tag == LDAP_REQ_BIND && ber_get_int( &tmpber, &ver ) ==
825 ld->ld_errno = LDAP_DECODING_ERROR;
830 /* the rest of the request is the DN followed by other stuff */
831 if ( ber_get_stringa( &tmpber, &orig_dn ) == LBER_DEFAULT ) {
836 if ( *dnp == NULL ) {
839 LDAP_FREE( orig_dn );
842 if ( tag == LDAP_REQ_BIND ) {
843 rc = ber_printf( ber, "{it{is" /*}}*/, msgid, tag, ver, *dnp );
845 rc = ber_printf( ber, "{it{s" /*}}*/, msgid, tag, *dnp );
853 if ( ber_write( ber, tmpber.ber_ptr, ( tmpber.ber_end -
854 tmpber.ber_ptr ), 0 ) != ( tmpber.ber_end - tmpber.ber_ptr ) ||
855 ber_printf( ber, /*{{*/ "}}" ) == -1 ) {
856 ld->ld_errno = LDAP_ENCODING_ERROR;
862 if ( ldap_debug & LDAP_DEBUG_PACKETS ) {
863 Debug( LDAP_DEBUG_ANY, "re_encode_request new request is:\n",
865 ber_log_dump( LDAP_DEBUG_BER, ldap_debug, ber, 0 );
867 #endif /* LDAP_DEBUG */
874 ldap_find_request_by_msgid( LDAP *ld, ber_int_t msgid )
878 for ( lr = ld->ld_requests; lr != NULL; lr = lr->lr_next ) {
879 if ( msgid == lr->lr_msgid ) {
888 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_DNS
890 dn2servers( LDAP *ld, const char *dn ) /* dn can also be a domain.... */
892 char *p, *host, *server_dn, **dxs;
895 LDAPServer *srvlist, *prevsrv, *srv;
897 if (( domain = strrchr( dn, '@' )) != NULL ) {
903 if (( dxs = ldap_getdxbyname( domain )) == NULL ) {
904 ld->ld_errno = LDAP_NO_MEMORY;
910 for ( i = 0; dxs[ i ] != NULL; ++i ) {
911 port = ldap_int_global_options.ldo_defport;
913 if ( strchr( dxs[ i ], ':' ) == NULL ) {
915 } else if ( strlen( dxs[ i ] ) >= 7 &&
916 strncmp( dxs[ i ], "ldap://", 7 ) == 0 ) {
918 if (( p = strchr( host, ':' )) == NULL ) {
924 if (( p = strchr( p, '/' )) != NULL ) {
926 if ( *server_dn == '\0' ) {
934 if ( host != NULL ) { /* found a server we can use */
935 if (( srv = (LDAPServer *)LDAP_CALLOC( 1,
936 sizeof( LDAPServer ))) == NULL ) {
937 free_servers( srvlist );
939 break; /* exit loop & return */
942 /* add to end of list of servers */
943 if ( srvlist == NULL ) {
946 prevsrv->lsrv_next = srv;
951 if (( srv->lsrv_host = LDAP_STRDUP( host )) == NULL ||
952 ( server_dn != NULL && ( srv->lsrv_dn =
953 LDAP_STRDUP( server_dn )) == NULL )) {
954 free_servers( srvlist );
956 break; /* exit loop & return */
958 srv->lsrv_port = port;
962 ldap_value_free( dxs );
964 if ( srvlist == NULL ) {
965 ld->ld_errno = LDAP_SERVER_DOWN;
970 #endif /* LDAP_API_FEATURE_X_OPENLDAP_V2_DNS */