2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4 * Copyright 1998-2004 The OpenLDAP Foundation.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted only as authorized by the OpenLDAP
11 * A copy of this license is available in the file LICENSE in the
12 * top-level directory of the distribution or, alternatively, at
13 * <http://www.OpenLDAP.org/license.html>.
15 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
16 * All rights reserved.
18 /* This notice applies to changes, created by or for Novell, Inc.,
19 * to preexisting works for which notices appear elsewhere in this file.
21 * Copyright (C) 1999, 2000 Novell, Inc. All Rights Reserved.
23 * THIS WORK IS SUBJECT TO U.S. AND INTERNATIONAL COPYRIGHT LAWS AND TREATIES.
24 * USE, MODIFICATION, AND REDISTRIBUTION OF THIS WORK IS SUBJECT TO VERSION
25 * 2.0.1 OF THE OPENLDAP PUBLIC LICENSE, A COPY OF WHICH IS AVAILABLE AT
26 * HTTP://WWW.OPENLDAP.ORG/LICENSE.HTML OR IN THE FILE "LICENSE" IN THE
27 * TOP-LEVEL DIRECTORY OF THE DISTRIBUTION. ANY USE OR EXPLOITATION OF THIS
28 * WORK OTHER THAN AS AUTHORIZED IN VERSION 2.0.1 OF THE OPENLDAP PUBLIC
29 * LICENSE, OR OTHER PRIOR WRITTEN CONSENT FROM NOVELL, COULD SUBJECT THE
30 * PERPETRATOR TO CRIMINAL AND CIVIL LIABILITY.
32 * Modification to OpenLDAP source by Novell, Inc.
33 * April 2000 sfs Added code to chase V3 referrals
34 * request.c - sending of ldap requests; handling of referrals
36 * Note: A verbatim copy of version 2.0.1 of the OpenLDAP Public License
37 * can be found in the file "build/LICENSE-2.0.1" in this distribution
38 * of OpenLDAP Software.
45 #include <ac/stdlib.h>
48 #include <ac/socket.h>
49 #include <ac/string.h>
51 #include <ac/unistd.h>
56 static LDAPConn *find_connection LDAP_P(( LDAP *ld, LDAPURLDesc *srv, int any ));
57 static void use_connection LDAP_P(( LDAP *ld, LDAPConn *lc ));
60 re_encode_request( LDAP *ld,
68 ldap_alloc_ber_with_options( LDAP *ld )
72 if (( ber = ber_alloc_t( ld->ld_lberoptions )) == NULL ) {
73 ld->ld_errno = LDAP_NO_MEMORY;
81 ldap_set_ber_options( LDAP *ld, BerElement *ber )
83 ber->ber_options = ld->ld_lberoptions;
88 ldap_send_initial_request(
99 LDAP_LOG ( OPERATION, ENTRY, "ldap_send_initial_request\n", 0, 0, 0 );
101 Debug( LDAP_DEBUG_TRACE, "ldap_send_initial_request\n", 0, 0, 0 );
104 if ( ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, NULL ) == -1 ) {
105 /* not connected yet */
106 int rc = ldap_open_defconn( ld );
114 LDAP_LOG ( OPERATION, DETAIL1,
115 "ldap_send_initial_request: ldap_open_defconn: successful\n" ,
118 Debug( LDAP_DEBUG_TRACE,
119 "ldap_open_defconn: successful\n",
126 * use of DNS is turned off or this is an X.500 DN...
127 * use our default connection
132 #ifdef LDAP_CONNECTIONLESS
133 if (LDAP_IS_UDP(ld)) {
134 if (msgtype == LDAP_REQ_BIND) {
135 if (ld->ld_options.ldo_cldapdn)
136 ldap_memfree(ld->ld_options.ldo_cldapdn);
137 ld->ld_options.ldo_cldapdn = ldap_strdup(dn);
140 if (msgtype != LDAP_REQ_ABANDON && msgtype != LDAP_REQ_SEARCH)
141 return LDAP_PARAM_ERROR;
144 #ifdef LDAP_R_COMPILE
145 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
147 rc = ldap_send_server_request( ld, ber, msgid, NULL,
148 servers, NULL, NULL );
149 #ifdef LDAP_R_COMPILE
150 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
153 ldap_free_urllist(servers);
159 ldap_int_flush_request(
164 LDAPConn *lc = lr->lr_conn;
166 if ( ber_flush( lc->lconn_sb, lr->lr_ber, 0 ) != 0 ) {
167 if ( errno == EAGAIN ) {
168 /* need to continue write later */
169 lr->lr_status = LDAP_REQST_WRITING;
170 ldap_mark_select_write( ld, lc->lconn_sb );
171 ld->ld_errno = LDAP_BUSY;
174 ld->ld_errno = LDAP_SERVER_DOWN;
175 ldap_free_request( ld, lr );
176 ldap_free_connection( ld, lc, 0, 0 );
180 if ( lr->lr_parent == NULL ) {
181 lr->lr_ber->ber_end = lr->lr_ber->ber_ptr;
182 lr->lr_ber->ber_ptr = lr->lr_ber->ber_buf;
184 lr->lr_status = LDAP_REQST_INPROGRESS;
186 /* sent -- waiting for a response */
187 ldap_mark_select_read( ld, lc->lconn_sb );
193 ldap_send_server_request(
197 LDAPRequest *parentreq,
198 LDAPURLDesc *srvlist,
206 LDAP_LOG ( OPERATION, ENTRY, "ldap_send_server_request\n", 0, 0, 0 );
208 Debug( LDAP_DEBUG_TRACE, "ldap_send_server_request\n", 0, 0, 0 );
212 ld->ld_errno = LDAP_SUCCESS; /* optimistic */
215 if ( srvlist == NULL ) {
218 if (( lc = find_connection( ld, srvlist, 1 )) ==
220 if ( (bind != NULL) && (parentreq != NULL) ) {
221 /* Remember the bind in the parent */
223 ++parentreq->lr_outrefcnt;
225 lc = ldap_new_connection( ld, srvlist, 0, 1, bind );
230 if ( lc == NULL || lc->lconn_status != LDAP_CONNST_CONNECTED ) {
232 if ( ld->ld_errno == LDAP_SUCCESS ) {
233 ld->ld_errno = LDAP_SERVER_DOWN;
236 /* Forget about the bind */
237 --parentreq->lr_outrefcnt;
242 use_connection( ld, lc );
244 /* If we still have an incomplete write, try to finish it before
245 * dealing with the new request. If we don't finish here, return
246 * LDAP_BUSY and let the caller retry later. We only allow a single
247 * request to be in WRITING state.
250 if ( ld->ld_requests &&
251 ld->ld_requests->lr_status == LDAP_REQST_WRITING &&
252 ldap_int_flush_request( ld, ld->ld_requests ) < 0 ) {
257 if (( lr = (LDAPRequest *)LDAP_CALLOC( 1, sizeof( LDAPRequest ))) ==
259 ld->ld_errno = LDAP_NO_MEMORY;
260 ldap_free_connection( ld, lc, 0, 0 );
263 /* Forget about the bind */
264 --parentreq->lr_outrefcnt;
268 lr->lr_msgid = msgid;
269 lr->lr_status = LDAP_REQST_INPROGRESS;
270 lr->lr_res_errno = LDAP_SUCCESS; /* optimistic */
273 if ( parentreq != NULL ) { /* sub-request */
275 /* Increment if we didn't do it before the bind */
276 ++parentreq->lr_outrefcnt;
278 lr->lr_origid = parentreq->lr_origid;
279 lr->lr_parentcnt = parentreq->lr_parentcnt + 1;
280 lr->lr_parent = parentreq;
281 lr->lr_refnext = parentreq->lr_child;
282 parentreq->lr_child = lr;
283 } else { /* original request */
284 lr->lr_origid = lr->lr_msgid;
287 if (( lr->lr_next = ld->ld_requests ) != NULL ) {
288 lr->lr_next->lr_prev = lr;
290 ld->ld_requests = lr;
293 ld->ld_errno = LDAP_SUCCESS;
294 if ( ldap_int_flush_request( ld, lr ) == -1 ) {
302 ldap_new_connection( LDAP *ld, LDAPURLDesc *srvlist, int use_ldsb,
303 int connect, LDAPreqinfo *bind )
310 LDAP_LOG ( OPERATION, ENTRY, "ldap_new_connection\n", 0, 0, 0 );
312 Debug( LDAP_DEBUG_TRACE, "ldap_new_connection\n", 0, 0, 0 );
315 * make a new LDAP server connection
316 * XXX open connection synchronously for now
318 if (( lc = (LDAPConn *)LDAP_CALLOC( 1, sizeof( LDAPConn ))) == NULL ||
319 ( !use_ldsb && ( (sb = ber_sockbuf_alloc()) == NULL ))) {
321 LDAP_FREE( (char *)lc );
323 ld->ld_errno = LDAP_NO_MEMORY;
327 lc->lconn_sb = ( use_ldsb ) ? ld->ld_sb : sb;
330 for ( srv = srvlist; srv != NULL; srv = srv->lud_next ) {
331 if ( ldap_int_open_connection( ld, lc, srv, 0 ) != -1 ) {
338 ber_sockbuf_free( lc->lconn_sb );
340 LDAP_FREE( (char *)lc );
341 ld->ld_errno = LDAP_SERVER_DOWN;
345 lc->lconn_server = ldap_url_dup(srv);
348 lc->lconn_status = LDAP_CONNST_CONNECTED;
349 lc->lconn_next = ld->ld_conns;
353 * XXX for now, we always do a synchronous bind. This will have
354 * to change in the long run...
358 LDAPConn *savedefconn;
360 /* Set flag to prevent additional referrals from being processed on this
361 * connection until the bind has completed
363 lc->lconn_rebind_inprogress = 1;
364 /* V3 rebind function */
365 if ( ld->ld_rebind_proc != NULL) {
366 LDAPURLDesc *srvfunc;
367 if( ( srvfunc = ldap_url_dup( srvlist)) == NULL) {
368 ld->ld_errno = LDAP_NO_MEMORY;
371 savedefconn = ld->ld_defconn;
372 ++lc->lconn_refcnt; /* avoid premature free */
376 LDAP_LOG ( OPERATION, DETAIL1,
377 "ldap_new_connection: Call application rebind_proc\n",
380 Debug( LDAP_DEBUG_TRACE, "Call application rebind_proc\n", 0, 0, 0);
382 #ifdef LDAP_R_COMPILE
383 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
384 ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
386 err = (*ld->ld_rebind_proc)( ld,
387 bind->ri_url, bind->ri_request, bind->ri_msgid,
388 ld->ld_rebind_params );
389 #ifdef LDAP_R_COMPILE
390 ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
391 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
394 ld->ld_defconn = savedefconn;
399 ldap_free_connection( ld, lc, 1, 0 );
402 ldap_free_urldesc( srvfunc);
405 savedefconn = ld->ld_defconn;
406 ++lc->lconn_refcnt; /* avoid premature free */
410 LDAP_LOG ( OPERATION, DETAIL1,
411 "ldap_new_connection: anonymous rebind via ldap_bind_s\n",
414 Debug( LDAP_DEBUG_TRACE, "anonymous rebind via ldap_bind_s\n", 0, 0, 0);
416 #ifdef LDAP_R_COMPILE
417 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
418 ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
420 if ( ldap_bind_s( ld, "", "", LDAP_AUTH_SIMPLE ) != LDAP_SUCCESS ) {
423 #ifdef LDAP_R_COMPILE
424 ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
425 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
427 ld->ld_defconn = savedefconn;
431 ldap_free_connection( ld, lc, 1, 0 );
436 lc->lconn_rebind_inprogress = 0;
444 find_connection( LDAP *ld, LDAPURLDesc *srv, int any )
446 * return an existing connection (if any) to the server srv
447 * if "any" is non-zero, check for any server in the "srv" chain
453 for ( lc = ld->ld_conns; lc != NULL; lc = lc->lconn_next ) {
454 for ( ls = srv; ls != NULL; ls = ls->lud_next ) {
455 if ( lc->lconn_server->lud_host != NULL &&
456 *lc->lconn_server->lud_host != '\0' &&
457 ls->lud_host != NULL && *ls->lud_host != '\0' &&
458 strcasecmp( ls->lud_host, lc->lconn_server->lud_host ) == 0
459 && ls->lud_port == lc->lconn_server->lud_port ) {
474 use_connection( LDAP *ld, LDAPConn *lc )
477 lc->lconn_lastused = time( NULL );
482 ldap_free_connection( LDAP *ld, LDAPConn *lc, int force, int unbind )
484 LDAPConn *tmplc, *prevlc;
487 LDAP_LOG ( OPERATION, ENTRY, "ldap_free_connection\n", 0, 0, 0 );
489 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection\n", 0, 0, 0 );
492 if ( force || --lc->lconn_refcnt <= 0 ) {
493 if ( lc->lconn_status == LDAP_CONNST_CONNECTED ) {
494 ldap_mark_select_clear( ld, lc->lconn_sb );
496 ldap_send_unbind( ld, lc->lconn_sb, NULL, NULL );
500 if( lc->lconn_ber != NULL ) {
501 ber_free( lc->lconn_ber, 1 );
504 ldap_int_sasl_close( ld, lc );
507 for ( tmplc = ld->ld_conns; tmplc != NULL;
508 tmplc = tmplc->lconn_next ) {
510 if ( prevlc == NULL ) {
511 ld->ld_conns = tmplc->lconn_next;
513 prevlc->lconn_next = tmplc->lconn_next;
519 ldap_free_urllist( lc->lconn_server );
520 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND
521 if ( lc->lconn_krbinstance != NULL ) {
522 LDAP_FREE( lc->lconn_krbinstance );
525 if ( lc->lconn_sb != ld->ld_sb ) {
526 ber_sockbuf_free( lc->lconn_sb );
528 if( lc->lconn_rebind_queue != NULL) {
530 for( i = 0; lc->lconn_rebind_queue[i] != NULL; i++) {
531 LDAP_VFREE(lc->lconn_rebind_queue[i]);
533 LDAP_FREE( lc->lconn_rebind_queue);
537 LDAP_LOG ( OPERATION, RESULTS,
538 "ldap_free_connection: actually freed\n", 0, 0, 0 );
540 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection: actually freed\n",
544 lc->lconn_lastused = time( NULL );
546 LDAP_LOG ( OPERATION, RESULTS, "ldap_free_connection: refcnt %d\n",
547 lc->lconn_refcnt, 0, 0 );
549 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection: refcnt %d\n",
550 lc->lconn_refcnt, 0, 0 );
558 ldap_dump_connection( LDAP *ld, LDAPConn *lconns, int all )
563 fprintf( stderr, "** Connection%s:\n", all ? "s" : "" );
564 for ( lc = lconns; lc != NULL; lc = lc->lconn_next ) {
565 if ( lc->lconn_server != NULL ) {
566 fprintf( stderr, "* host: %s port: %d%s\n",
567 ( lc->lconn_server->lud_host == NULL ) ? "(null)"
568 : lc->lconn_server->lud_host,
569 lc->lconn_server->lud_port, ( lc->lconn_sb ==
570 ld->ld_sb ) ? " (default)" : "" );
572 fprintf( stderr, " refcnt: %d status: %s\n", lc->lconn_refcnt,
573 ( lc->lconn_status == LDAP_CONNST_NEEDSOCKET ) ?
574 "NeedSocket" : ( lc->lconn_status ==
575 LDAP_CONNST_CONNECTING ) ? "Connecting" : "Connected" );
576 fprintf( stderr, " last used: %s",
577 ldap_pvt_ctime( &lc->lconn_lastused, timebuf ));
578 if( lc->lconn_rebind_inprogress ) {
579 fprintf( stderr, " rebind in progress\n");
580 if( lc->lconn_rebind_queue != NULL) {
582 for( ;lc->lconn_rebind_queue[i] != NULL; i++) {
584 for( ;lc->lconn_rebind_queue[i][j] != 0; j++) {
585 fprintf( stderr, " queue %d entry %d - %s\n",
586 i, j, lc->lconn_rebind_queue[i][j]);
590 fprintf( stderr, " queue is empty\n");
593 fprintf(stderr, "\n");
602 ldap_dump_requests_and_responses( LDAP *ld )
607 #ifdef LDAP_R_COMPILE
608 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
610 fprintf( stderr, "** Outstanding Requests:\n" );
611 if (( lr = ld->ld_requests ) == NULL ) {
612 fprintf( stderr, " Empty\n" );
614 for ( ; lr != NULL; lr = lr->lr_next ) {
615 fprintf( stderr, " * msgid %d, origid %d, status %s\n",
616 lr->lr_msgid, lr->lr_origid,
617 ( lr->lr_status == LDAP_REQST_INPROGRESS ) ? "InProgress" :
618 ( lr->lr_status == LDAP_REQST_CHASINGREFS ) ? "ChasingRefs" :
619 ( lr->lr_status == LDAP_REQST_NOTCONNECTED ) ? "NotConnected" :
620 ( lr->lr_status == LDAP_REQST_WRITING) ? "Writing" :
621 ( lr->lr_status == LDAP_REQST_COMPLETED ? "Request Completed" : "Invalid Status"));
622 fprintf( stderr, " outstanding referrals %d, parent count %d\n",
623 lr->lr_outrefcnt, lr->lr_parentcnt );
625 #ifdef LDAP_R_COMPILE
626 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
628 fprintf( stderr, "** Response Queue:\n" );
629 if (( lm = ld->ld_responses ) == NULL ) {
630 fprintf( stderr, " Empty\n" );
632 for ( ; lm != NULL; lm = lm->lm_next ) {
633 fprintf( stderr, " * msgid %d, type %lu\n",
634 lm->lm_msgid, (unsigned long) lm->lm_msgtype );
635 if (( l = lm->lm_chain ) != NULL ) {
636 fprintf( stderr, " chained responses:\n" );
637 for ( ; l != NULL; l = l->lm_chain ) {
639 " * msgid %d, type %lu\n",
641 (unsigned long) l->lm_msgtype );
646 #endif /* LDAP_DEBUG */
649 ldap_free_request_int( LDAP *ld, LDAPRequest *lr )
651 if ( lr->lr_prev == NULL ) {
652 ld->ld_requests = lr->lr_next;
654 lr->lr_prev->lr_next = lr->lr_next;
657 if ( lr->lr_next != NULL ) {
658 lr->lr_next->lr_prev = lr->lr_prev;
661 if ( lr->lr_ber != NULL ) {
662 ber_free( lr->lr_ber, 1 );
665 if ( lr->lr_res_error != NULL ) {
666 LDAP_FREE( lr->lr_res_error );
669 if ( lr->lr_res_matched != NULL ) {
670 LDAP_FREE( lr->lr_res_matched );
677 ldap_free_request( LDAP *ld, LDAPRequest *lr )
679 LDAPRequest **ttmplr;
682 LDAP_LOG ( OPERATION, ARGS, "ldap_free_request (origid %d, msgid %d)\n",
683 lr->lr_origid, lr->lr_msgid, 0 );
685 Debug( LDAP_DEBUG_TRACE, "ldap_free_request (origid %d, msgid %d)\n",
686 lr->lr_origid, lr->lr_msgid, 0 );
689 /* free all referrals (child requests) */
690 while ( lr->lr_child )
691 ldap_free_request( ld, lr->lr_child );
693 if ( lr->lr_parent != NULL ) {
694 --lr->lr_parent->lr_outrefcnt;
695 for ( ttmplr = &lr->lr_parent->lr_child; *ttmplr && *ttmplr != lr; ttmplr = &(*ttmplr)->lr_refnext );
697 *ttmplr = lr->lr_refnext;
699 ldap_free_request_int( ld, lr );
707 * (IN) ld = LDAP connection handle
708 * (IN) lr = LDAP Request structure
709 * (IN) refs = array of pointers to referral strings that we will chase
710 * The array will be free'd by this function when no longer needed
711 * (IN) sref != 0 if following search reference
712 * (OUT) errstrp = Place to return a string of referrals which could not be followed
713 * (OUT) hadrefp = 1 if sucessfully followed referral
715 * Return value - number of referrals followed
718 ldap_chase_v3referrals( LDAP *ld, LDAPRequest *lr, char **refs, int sref, char **errstrp, int *hadrefp )
721 int unfollowedcnt = 0;
722 LDAPRequest *origreq;
723 LDAPURLDesc *srv = NULL;
725 char **refarray = NULL;
727 int rc, count, i, j, id;
730 ld->ld_errno = LDAP_SUCCESS; /* optimistic */
734 LDAP_LOG ( OPERATION, ENTRY, "ldap_chase_v3referrals\n", 0, 0, 0 );
736 Debug( LDAP_DEBUG_TRACE, "ldap_chase_v3referrals\n", 0, 0, 0 );
742 /* If no referrals in array, return */
743 if ( (refs == NULL) || ( (refs)[0] == NULL) ) {
748 /* Check for hop limit exceeded */
749 if ( lr->lr_parentcnt >= ld->ld_refhoplimit ) {
751 LDAP_LOG ( OPERATION, DETAIL1,
752 "ldap_chase_v3referrals: more than %d referral hops (dropping)\n",
753 ld->ld_refhoplimit, 0, 0 );
755 Debug( LDAP_DEBUG_ANY,
756 "more than %d referral hops (dropping)\n", ld->ld_refhoplimit, 0, 0 );
758 ld->ld_errno = LDAP_REFERRAL_LIMIT_EXCEEDED;
763 /* find original request */
765 origreq->lr_parent != NULL;
766 origreq = origreq->lr_parent )
773 /* parse out & follow referrals */
774 for( i=0; refarray[i] != NULL; i++) {
775 /* Parse the referral URL */
776 if (( rc = ldap_url_parse_ext( refarray[i], &srv)) != LDAP_SUCCESS) {
782 if( srv->lud_crit_exts ) {
783 /* we do not support any extensions */
784 ld->ld_errno = LDAP_NOT_SUPPORTED;
789 /* treat ldap://hostpart and ldap://hostpart/ the same */
790 if ( srv->lud_dn && srv->lud_dn[0] == '\0' ) {
791 LDAP_FREE( srv->lud_dn );
795 /* check connection for re-bind in progress */
796 if (( lc = find_connection( ld, srv, 1 )) != NULL ) {
797 if( lc->lconn_rebind_inprogress) {
798 /* We are already chasing a referral or search reference and a
799 * bind on that connection is in progress. We must queue
800 * referrals on that connection, so we don't get a request
801 * going out before the bind operation completes. This happens
802 * if two search references come in one behind the other
803 * for the same server with different contexts.
806 LDAP_LOG ( OPERATION, DETAIL1,
807 "ldap_chase_v3referrals: queue referral \"%s\"\n",
810 Debug( LDAP_DEBUG_TRACE,
811 "ldap_chase_v3referrals: queue referral \"%s\"\n",
814 if( lc->lconn_rebind_queue == NULL ) {
815 /* Create a referral list */
816 lc->lconn_rebind_queue =
817 (char ***) LDAP_MALLOC( sizeof(void *) * 2);
819 if( lc->lconn_rebind_queue == NULL) {
820 ld->ld_errno = LDAP_NO_MEMORY;
825 lc->lconn_rebind_queue[0] = refarray;
826 lc->lconn_rebind_queue[1] = NULL;
830 /* Count how many referral arrays we already have */
831 for( j = 0; lc->lconn_rebind_queue[j] != NULL; j++) {
835 /* Add the new referral to the list */
836 lc->lconn_rebind_queue = (char ***) LDAP_REALLOC(
837 lc->lconn_rebind_queue, sizeof(void *) * (j + 2));
839 if( lc->lconn_rebind_queue == NULL ) {
840 ld->ld_errno = LDAP_NO_MEMORY;
844 lc->lconn_rebind_queue[j] = refarray;
845 lc->lconn_rebind_queue[j+1] = NULL;
849 /* We have queued the referral/reference, now just return */
852 count = 1; /* Pretend we already followed referral */
856 /* Re-encode the request with the new starting point of the search.
857 * Note: In the future we also need to replace the filter if one
858 * was provided with the search reference
861 /* For references we don't want old dn if new dn empty */
862 if ( sref && srv->lud_dn == NULL ) {
863 srv->lud_dn = LDAP_STRDUP( "" );
866 LDAP_NEXT_MSGID( ld, id );
867 ber = re_encode_request( ld, origreq->lr_ber, id,
868 sref, srv, &rinfo.ri_request );
871 ld->ld_errno = LDAP_ENCODING_ERROR;
877 LDAP_LOG ( OPERATION, DETAIL1,
878 "ldap_chase_v3referrals: msgid %d, url \"%s\"\n",
879 lr->lr_msgid, refarray[i], 0 );
881 Debug( LDAP_DEBUG_TRACE,
882 "ldap_chase_v3referral: msgid %d, url \"%s\"\n",
883 lr->lr_msgid, refarray[i], 0);
886 /* Send the new request to the server - may require a bind */
887 rinfo.ri_msgid = origreq->lr_origid;
888 rinfo.ri_url = refarray[i];
889 #ifdef LDAP_R_COMPILE
890 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
892 rc = ldap_send_server_request( ld, ber, id,
893 origreq, srv, NULL, &rinfo );
894 #ifdef LDAP_R_COMPILE
895 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
898 /* Failure, try next referral in the list */
900 LDAP_LOG ( OPERATION, ERR,
901 "ldap_chase_v3referrals: Unable to chase referral \"%s\" (%s)\n",
902 refarray[i], ldap_err2string( ld->ld_errno ), 0 );
904 Debug( LDAP_DEBUG_ANY, "Unable to chase referral \"%s\" (%s)\n",
905 refarray[i], ldap_err2string( ld->ld_errno ), 0);
907 unfollowedcnt += ldap_append_referral( ld, &unfollowed, refarray[i]);
908 ldap_free_urllist(srv);
911 /* Success, no need to try this referral list further */
916 /* check if there is a queue of referrals that came in during bind */
918 if (( lc = find_connection( ld, srv, 1 )) == NULL ) {
919 ld->ld_errno = LDAP_OPERATIONS_ERROR;
925 if( lc->lconn_rebind_queue != NULL) {
926 /* Release resources of previous list */
927 LDAP_VFREE(refarray);
929 ldap_free_urllist(srv);
932 /* Pull entries off end of queue so list always null terminated */
933 for( j = 0; lc->lconn_rebind_queue[j] != NULL; j++) {
936 refarray = lc->lconn_rebind_queue[j-1];
937 lc->lconn_rebind_queue[j-1] = NULL;
938 /* we pulled off last entry from queue, free queue */
940 LDAP_FREE( lc->lconn_rebind_queue);
941 lc->lconn_rebind_queue = NULL;
943 /* restart the loop the with new referral list */
947 break; /* referral followed, break out of for loop */
951 LDAP_VFREE(refarray);
952 ldap_free_urllist(srv);
953 LDAP_FREE( *errstrp );
957 LDAP_FREE( unfollowed );
960 ld->ld_errno = LDAP_REFERRAL;
961 *errstrp = unfollowed;
967 * XXX merging of errors in this routine needs to be improved
970 ldap_chase_referrals( LDAP *ld,
978 char *p, *ref, *unfollowed;
979 LDAPRequest *origreq;
985 LDAP_LOG ( OPERATION, ENTRY, "ldap_chase_referrals\n", 0, 0, 0 );
987 Debug( LDAP_DEBUG_TRACE, "ldap_chase_referrals\n", 0, 0, 0 );
990 ld->ld_errno = LDAP_SUCCESS; /* optimistic */
993 if ( *errstrp == NULL ) {
997 len = strlen( *errstrp );
998 for ( p = *errstrp; len >= LDAP_REF_STR_LEN; ++p, --len ) {
999 if ( strncasecmp( p, LDAP_REF_STR, LDAP_REF_STR_LEN ) == 0 ) {
1001 p += LDAP_REF_STR_LEN;
1006 if ( len < LDAP_REF_STR_LEN ) {
1010 if ( lr->lr_parentcnt >= ld->ld_refhoplimit ) {
1012 LDAP_LOG ( OPERATION, ENTRY,
1013 "ldap_chase_referrals: more than %d referral hops (dropping)\n",
1014 ld->ld_refhoplimit, 0, 0 );
1016 Debug( LDAP_DEBUG_ANY,
1017 "more than %d referral hops (dropping)\n",
1018 ld->ld_refhoplimit, 0, 0 );
1020 /* XXX report as error in ld->ld_errno? */
1024 /* find original request */
1025 for ( origreq = lr; origreq->lr_parent != NULL;
1026 origreq = origreq->lr_parent ) {
1033 /* parse out & follow referrals */
1034 for ( ref = p; rc == 0 && ref != NULL; ref = p ) {
1035 if (( p = strchr( ref, '\n' )) != NULL ) {
1041 rc = ldap_url_parse_ext( ref, &srv );
1043 if ( rc != LDAP_URL_SUCCESS ) {
1045 LDAP_LOG ( OPERATION, DETAIL1,
1046 "ldap_chase_referrals: ignoring unknown referral <%s>\n",
1049 Debug( LDAP_DEBUG_TRACE,
1050 "ignoring unknown referral <%s>\n", ref, 0, 0 );
1052 rc = ldap_append_referral( ld, &unfollowed, ref );
1057 if( srv->lud_dn != NULL && srv->lud_dn == '\0' ) {
1058 LDAP_FREE( srv->lud_dn );
1063 LDAP_LOG ( OPERATION, DETAIL1,
1064 "ldap_chase_referrals: chasing LDAP referral <%s>\n", ref, 0, 0 );
1066 Debug( LDAP_DEBUG_TRACE,
1067 "chasing LDAP referral: <%s>\n", ref, 0, 0 );
1072 LDAP_NEXT_MSGID( ld, id );
1073 ber = re_encode_request( ld, origreq->lr_ber,
1074 id, sref, srv, &rinfo.ri_request );
1080 /* copy the complete referral for rebind process */
1081 rinfo.ri_url = LDAP_STRDUP( ref );
1083 rinfo.ri_msgid = origreq->lr_origid;
1085 #ifdef LDAP_R_COMPILE
1086 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
1088 rc = ldap_send_server_request( ld, ber, id,
1089 lr, srv, NULL, &rinfo );
1090 #ifdef LDAP_R_COMPILE
1091 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
1094 LDAP_FREE( rinfo.ri_url );
1100 LDAP_LOG ( OPERATION, ERR,
1101 "ldap_chase_referrals: Unable to chase referral <%s>\n",
1102 ldap_err2string( ld->ld_errno), 0, 0 );
1104 Debug( LDAP_DEBUG_ANY,
1105 "Unable to chase referral (%s)\n",
1106 ldap_err2string( ld->ld_errno ), 0, 0 );
1108 rc = ldap_append_referral( ld, &unfollowed, ref );
1111 ldap_free_urllist(srv);
1114 LDAP_FREE( *errstrp );
1115 *errstrp = unfollowed;
1117 return(( rc == 0 ) ? count : rc );
1122 ldap_append_referral( LDAP *ld, char **referralsp, char *s )
1126 if ( *referralsp == NULL ) {
1128 *referralsp = (char *)LDAP_MALLOC( strlen( s ) + LDAP_REF_STR_LEN
1132 *referralsp = (char *)LDAP_REALLOC( *referralsp,
1133 strlen( *referralsp ) + strlen( s ) + 2 );
1136 if ( *referralsp == NULL ) {
1137 ld->ld_errno = LDAP_NO_MEMORY;
1142 strcpy( *referralsp, LDAP_REF_STR );
1144 strcat( *referralsp, "\n" );
1146 strcat( *referralsp, s );
1154 re_encode_request( LDAP *ld,
1155 BerElement *origber,
1162 * XXX this routine knows way too much about how the lber library works!
1170 BerElement tmpber, *ber;
1175 LDAP_LOG ( OPERATION, ARGS,
1176 "re_encode_request: new msgid %ld, new dn <%s>\n",
1178 ( srv == NULL || srv->lud_dn == NULL ) ? "NONE" : srv->lud_dn, 0 );
1180 Debug( LDAP_DEBUG_TRACE,
1181 "re_encode_request: new msgid %ld, new dn <%s>\n",
1183 ( srv == NULL || srv->lud_dn == NULL) ? "NONE" : srv->lud_dn, 0 );
1189 * all LDAP requests are sequences that start with a message id.
1190 * For all except delete, this is followed by a sequence that is
1191 * tagged with the operation code. For delete, the provided DN
1192 * is not wrapped by a sequence.
1194 rtag = ber_scanf( &tmpber, "{it", /*}*/ &along, &tag );
1196 if ( rtag == LBER_ERROR ) {
1197 ld->ld_errno = LDAP_DECODING_ERROR;
1202 if ( tag == LDAP_REQ_BIND ) {
1203 /* bind requests have a version number before the DN & other stuff */
1204 rtag = ber_scanf( &tmpber, "{ia" /*}*/, &ver, &orig_dn );
1206 } else if ( tag == LDAP_REQ_DELETE ) {
1207 /* delete requests don't have a DN wrapping sequence */
1208 rtag = ber_scanf( &tmpber, "a", &orig_dn );
1210 } else if ( tag == LDAP_REQ_SEARCH ) {
1211 /* search requests need to be re-scope-ed */
1212 rtag = ber_scanf( &tmpber, "{ae" /*"}"*/, &orig_dn, &scope );
1214 if( srv->lud_scope != LDAP_SCOPE_DEFAULT ) {
1215 /* use the scope provided in reference */
1216 scope = srv->lud_scope;
1218 } else if ( sref ) {
1219 /* use scope implied by previous operation
1222 * subtree -> subtree
1223 * subordinate -> subtree
1227 case LDAP_SCOPE_BASE:
1228 case LDAP_SCOPE_ONELEVEL:
1229 scope = LDAP_SCOPE_BASE;
1231 case LDAP_SCOPE_SUBTREE:
1232 #ifdef LDAP_FEATURE_SUBORDINATE_SCOPE
1233 case LDAP_SCOPE_SUBORDINATE:
1235 scope = LDAP_SCOPE_SUBTREE;
1241 rtag = ber_scanf( &tmpber, "{a" /*}*/, &orig_dn );
1244 if( rtag == LBER_ERROR ) {
1245 ld->ld_errno = LDAP_DECODING_ERROR;
1249 if (( ber = ldap_alloc_ber_with_options( ld )) == NULL ) {
1253 if ( srv->lud_dn == NULL ) {
1259 if ( tag == LDAP_REQ_BIND ) {
1260 rc = ber_printf( ber, "{it{is" /*}}*/, msgid, tag, ver, dn );
1261 } else if ( tag == LDAP_REQ_DELETE ) {
1262 rc = ber_printf( ber, "{itsN}", msgid, tag, dn );
1263 } else if ( tag == LDAP_REQ_SEARCH ) {
1264 rc = ber_printf( ber, "{it{se" /*}}*/, msgid, tag, dn, scope );
1266 rc = ber_printf( ber, "{it{s" /*}}*/, msgid, tag, dn );
1269 LDAP_FREE( orig_dn );
1272 ld->ld_errno = LDAP_ENCODING_ERROR;
1277 if ( tag != LDAP_REQ_DELETE && (
1278 ber_write(ber, tmpber.ber_ptr, ( tmpber.ber_end - tmpber.ber_ptr ), 0)
1279 != ( tmpber.ber_end - tmpber.ber_ptr ) ||
1280 ber_printf( ber, /*{{*/ "N}N}" ) == -1 ) )
1282 ld->ld_errno = LDAP_ENCODING_ERROR;
1288 if ( ldap_debug & LDAP_DEBUG_PACKETS ) {
1290 LDAP_LOG ( OPERATION, DETAIL1,
1291 "re_encode_request: new request is:\n", 0, 0, 0 );
1293 Debug( LDAP_DEBUG_ANY, "re_encode_request new request is:\n",
1296 ber_log_dump( LDAP_DEBUG_BER, ldap_debug, ber, 0 );
1298 #endif /* LDAP_DEBUG */
1300 *type = tag; /* return request type */
1306 ldap_find_request_by_msgid( LDAP *ld, ber_int_t msgid )
1310 #ifdef LDAP_R_COMPILE
1311 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
1313 for ( lr = ld->ld_requests; lr != NULL; lr = lr->lr_next ) {
1314 if( lr->lr_status == LDAP_REQST_COMPLETED ) {
1315 continue; /* Skip completed requests */
1317 if ( msgid == lr->lr_msgid ) {
1321 #ifdef LDAP_R_COMPILE
1322 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );