3 * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
4 * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
7 * Copyright (c) 1995 Regents of the University of Michigan.
11 * This notice applies to changes, created by or for Novell, Inc.,
12 * to preexisting works for which notices appear elsewhere in this file.
14 * Copyright (C) 1999, 2000 Novell, Inc. All Rights Reserved.
16 * THIS WORK IS SUBJECT TO U.S. AND INTERNATIONAL COPYRIGHT LAWS AND TREATIES.
17 * USE, MODIFICATION, AND REDISTRIBUTION OF THIS WORK IS SUBJECT TO VERSION
18 * 2.0.1 OF THE OPENLDAP PUBLIC LICENSE, A COPY OF WHICH IS AVAILABLE AT
19 * HTTP://WWW.OPENLDAP.ORG/LICENSE.HTML OR IN THE FILE "LICENSE" IN THE
20 * TOP-LEVEL DIRECTORY OF THE DISTRIBUTION. ANY USE OR EXPLOITATION OF THIS
21 * WORK OTHER THAN AS AUTHORIZED IN VERSION 2.0.1 OF THE OPENLDAP PUBLIC
22 * LICENSE, OR OTHER PRIOR WRITTEN CONSENT FROM NOVELL, COULD SUBJECT THE
23 * PERPETRATOR TO CRIMINAL AND CIVIL LIABILITY.
25 * Modification to OpenLDAP source by Novell, Inc.
26 * April 2000 sfs Added code to chase V3 referrals
27 * request.c - sending of ldap requests; handling of referrals
29 /* Note: A verbatim copy of version 2.0.1 of the OpenLDAP Public License
30 * can be found in the file "build/LICENSE-2.0.1" in this distribution
31 * of OpenLDAP Software.
38 #include <ac/stdlib.h>
41 #include <ac/socket.h>
42 #include <ac/string.h>
44 #include <ac/unistd.h>
49 static LDAPConn *find_connection LDAP_P(( LDAP *ld, LDAPURLDesc *srv, int any ));
50 static void use_connection LDAP_P(( LDAP *ld, LDAPConn *lc ));
53 re_encode_request( LDAP *ld,
61 ldap_alloc_ber_with_options( LDAP *ld )
65 if (( ber = ber_alloc_t( ld->ld_lberoptions )) == NULL ) {
66 ld->ld_errno = LDAP_NO_MEMORY;
74 ldap_set_ber_options( LDAP *ld, BerElement *ber )
76 ber->ber_options = ld->ld_lberoptions;
81 ldap_send_initial_request(
92 LDAP_LOG ( OPERATION, ENTRY, "ldap_send_initial_request\n", 0, 0, 0 );
94 Debug( LDAP_DEBUG_TRACE, "ldap_send_initial_request\n", 0, 0, 0 );
97 if ( ber_sockbuf_ctrl( ld->ld_sb, LBER_SB_OPT_GET_FD, NULL ) == -1 ) {
98 /* not connected yet */
99 int rc = ldap_open_defconn( ld );
107 LDAP_LOG ( OPERATION, DETAIL1,
108 "ldap_send_initial_request: ldap_open_defconn: successful\n" ,
111 Debug( LDAP_DEBUG_TRACE,
112 "ldap_open_defconn: successful\n",
119 * use of DNS is turned off or this is an X.500 DN...
120 * use our default connection
125 #ifdef LDAP_CONNECTIONLESS
126 if (LDAP_IS_UDP(ld)) {
127 if (msgtype == LDAP_REQ_BIND) {
128 if (ld->ld_options.ldo_cldapdn)
129 ldap_memfree(ld->ld_options.ldo_cldapdn);
130 ld->ld_options.ldo_cldapdn = ldap_strdup(dn);
133 if (msgtype != LDAP_REQ_ABANDON && msgtype != LDAP_REQ_SEARCH)
134 return LDAP_PARAM_ERROR;
137 #ifdef LDAP_R_COMPILE
138 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
140 rc = ldap_send_server_request( ld, ber, msgid, NULL,
141 servers, NULL, NULL );
142 #ifdef LDAP_R_COMPILE
143 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
146 ldap_free_urllist(servers);
152 ldap_int_flush_request(
157 LDAPConn *lc = lr->lr_conn;
159 if ( ber_flush( lc->lconn_sb, lr->lr_ber, 0 ) != 0 ) {
160 if ( errno == EAGAIN ) {
161 /* need to continue write later */
162 lr->lr_status = LDAP_REQST_WRITING;
163 ldap_mark_select_write( ld, lc->lconn_sb );
164 ld->ld_errno = LDAP_BUSY;
167 ld->ld_errno = LDAP_SERVER_DOWN;
168 ldap_free_request( ld, lr );
169 ldap_free_connection( ld, lc, 0, 0 );
173 if ( lr->lr_parent == NULL ) {
174 lr->lr_ber->ber_end = lr->lr_ber->ber_ptr;
175 lr->lr_ber->ber_ptr = lr->lr_ber->ber_buf;
177 lr->lr_status = LDAP_REQST_INPROGRESS;
179 /* sent -- waiting for a response */
180 ldap_mark_select_read( ld, lc->lconn_sb );
186 ldap_send_server_request(
190 LDAPRequest *parentreq,
191 LDAPURLDesc *srvlist,
199 LDAP_LOG ( OPERATION, ENTRY, "ldap_send_server_request\n", 0, 0, 0 );
201 Debug( LDAP_DEBUG_TRACE, "ldap_send_server_request\n", 0, 0, 0 );
205 ld->ld_errno = LDAP_SUCCESS; /* optimistic */
208 if ( srvlist == NULL ) {
211 if (( lc = find_connection( ld, srvlist, 1 )) ==
213 if ( (bind != NULL) && (parentreq != NULL) ) {
214 /* Remember the bind in the parent */
216 ++parentreq->lr_outrefcnt;
218 lc = ldap_new_connection( ld, srvlist, 0, 1, bind );
223 if ( lc == NULL || lc->lconn_status != LDAP_CONNST_CONNECTED ) {
225 if ( ld->ld_errno == LDAP_SUCCESS ) {
226 ld->ld_errno = LDAP_SERVER_DOWN;
229 /* Forget about the bind */
230 --parentreq->lr_outrefcnt;
235 use_connection( ld, lc );
237 /* If we still have an incomplete write, try to finish it before
238 * dealing with the new request. If we don't finish here, return
239 * LDAP_BUSY and let the caller retry later. We only allow a single
240 * request to be in WRITING state.
243 if ( ld->ld_requests &&
244 ld->ld_requests->lr_status == LDAP_REQST_WRITING &&
245 ldap_int_flush_request( ld, ld->ld_requests ) < 0 ) {
250 if (( lr = (LDAPRequest *)LDAP_CALLOC( 1, sizeof( LDAPRequest ))) ==
252 ld->ld_errno = LDAP_NO_MEMORY;
253 ldap_free_connection( ld, lc, 0, 0 );
256 /* Forget about the bind */
257 --parentreq->lr_outrefcnt;
261 lr->lr_msgid = msgid;
262 lr->lr_status = LDAP_REQST_INPROGRESS;
263 lr->lr_res_errno = LDAP_SUCCESS; /* optimistic */
266 if ( parentreq != NULL ) { /* sub-request */
268 /* Increment if we didn't do it before the bind */
269 ++parentreq->lr_outrefcnt;
271 lr->lr_origid = parentreq->lr_origid;
272 lr->lr_parentcnt = parentreq->lr_parentcnt + 1;
273 lr->lr_parent = parentreq;
274 lr->lr_refnext = parentreq->lr_child;
275 parentreq->lr_child = lr;
276 } else { /* original request */
277 lr->lr_origid = lr->lr_msgid;
280 if (( lr->lr_next = ld->ld_requests ) != NULL ) {
281 lr->lr_next->lr_prev = lr;
283 ld->ld_requests = lr;
286 ld->ld_errno = LDAP_SUCCESS;
287 if ( ldap_int_flush_request( ld, lr ) == -1 ) {
295 ldap_new_connection( LDAP *ld, LDAPURLDesc *srvlist, int use_ldsb,
296 int connect, LDAPreqinfo *bind )
303 LDAP_LOG ( OPERATION, ENTRY, "ldap_new_connection\n", 0, 0, 0 );
305 Debug( LDAP_DEBUG_TRACE, "ldap_new_connection\n", 0, 0, 0 );
308 * make a new LDAP server connection
309 * XXX open connection synchronously for now
311 if (( lc = (LDAPConn *)LDAP_CALLOC( 1, sizeof( LDAPConn ))) == NULL ||
312 ( !use_ldsb && ( (sb = ber_sockbuf_alloc()) == NULL ))) {
314 LDAP_FREE( (char *)lc );
316 ld->ld_errno = LDAP_NO_MEMORY;
320 lc->lconn_sb = ( use_ldsb ) ? ld->ld_sb : sb;
323 for ( srv = srvlist; srv != NULL; srv = srv->lud_next ) {
324 if ( ldap_int_open_connection( ld, lc, srv, 0 ) != -1 ) {
331 ber_sockbuf_free( lc->lconn_sb );
333 LDAP_FREE( (char *)lc );
334 ld->ld_errno = LDAP_SERVER_DOWN;
338 lc->lconn_server = ldap_url_dup(srv);
341 lc->lconn_status = LDAP_CONNST_CONNECTED;
342 lc->lconn_next = ld->ld_conns;
346 * XXX for now, we always do a synchronous bind. This will have
347 * to change in the long run...
351 LDAPConn *savedefconn;
353 /* Set flag to prevent additional referrals from being processed on this
354 * connection until the bind has completed
356 lc->lconn_rebind_inprogress = 1;
357 /* V3 rebind function */
358 if ( ld->ld_rebind_proc != NULL) {
359 LDAPURLDesc *srvfunc;
360 if( ( srvfunc = ldap_url_dup( srvlist)) == NULL) {
361 ld->ld_errno = LDAP_NO_MEMORY;
364 savedefconn = ld->ld_defconn;
365 ++lc->lconn_refcnt; /* avoid premature free */
369 LDAP_LOG ( OPERATION, DETAIL1,
370 "ldap_new_connection: Call application rebind_proc\n",
373 Debug( LDAP_DEBUG_TRACE, "Call application rebind_proc\n", 0, 0, 0);
375 #ifdef LDAP_R_COMPILE
376 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
377 ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
379 err = (*ld->ld_rebind_proc)( ld,
380 bind->ri_url, bind->ri_request, bind->ri_msgid,
381 ld->ld_rebind_params );
382 #ifdef LDAP_R_COMPILE
383 ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
384 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
387 ld->ld_defconn = savedefconn;
392 ldap_free_connection( ld, lc, 1, 0 );
395 ldap_free_urldesc( srvfunc);
398 savedefconn = ld->ld_defconn;
399 ++lc->lconn_refcnt; /* avoid premature free */
403 LDAP_LOG ( OPERATION, DETAIL1,
404 "ldap_new_connection: anonymous rebind via ldap_bind_s\n",
407 Debug( LDAP_DEBUG_TRACE, "anonymous rebind via ldap_bind_s\n", 0, 0, 0);
409 #ifdef LDAP_R_COMPILE
410 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
411 ldap_pvt_thread_mutex_unlock( &ld->ld_res_mutex );
413 if ( ldap_bind_s( ld, "", "", LDAP_AUTH_SIMPLE ) != LDAP_SUCCESS ) {
416 #ifdef LDAP_R_COMPILE
417 ldap_pvt_thread_mutex_lock( &ld->ld_res_mutex );
418 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
420 ld->ld_defconn = savedefconn;
424 ldap_free_connection( ld, lc, 1, 0 );
429 lc->lconn_rebind_inprogress = 0;
437 find_connection( LDAP *ld, LDAPURLDesc *srv, int any )
439 * return an existing connection (if any) to the server srv
440 * if "any" is non-zero, check for any server in the "srv" chain
446 for ( lc = ld->ld_conns; lc != NULL; lc = lc->lconn_next ) {
447 for ( ls = srv; ls != NULL; ls = ls->lud_next ) {
448 if ( lc->lconn_server->lud_host != NULL &&
449 *lc->lconn_server->lud_host != '\0' &&
450 ls->lud_host != NULL && *ls->lud_host != '\0' &&
451 strcasecmp( ls->lud_host, lc->lconn_server->lud_host ) == 0
452 && ls->lud_port == lc->lconn_server->lud_port ) {
467 use_connection( LDAP *ld, LDAPConn *lc )
470 lc->lconn_lastused = time( NULL );
475 ldap_free_connection( LDAP *ld, LDAPConn *lc, int force, int unbind )
477 LDAPConn *tmplc, *prevlc;
480 LDAP_LOG ( OPERATION, ENTRY, "ldap_free_connection\n", 0, 0, 0 );
482 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection\n", 0, 0, 0 );
485 if ( force || --lc->lconn_refcnt <= 0 ) {
486 if ( lc->lconn_status == LDAP_CONNST_CONNECTED ) {
487 ldap_mark_select_clear( ld, lc->lconn_sb );
489 ldap_send_unbind( ld, lc->lconn_sb, NULL, NULL );
493 if( lc->lconn_ber != NULL ) {
494 ber_free( lc->lconn_ber, 1 );
497 ldap_int_sasl_close( ld, lc );
500 for ( tmplc = ld->ld_conns; tmplc != NULL;
501 tmplc = tmplc->lconn_next ) {
503 if ( prevlc == NULL ) {
504 ld->ld_conns = tmplc->lconn_next;
506 prevlc->lconn_next = tmplc->lconn_next;
512 ldap_free_urllist( lc->lconn_server );
513 #ifdef LDAP_API_FEATURE_X_OPENLDAP_V2_KBIND
514 if ( lc->lconn_krbinstance != NULL ) {
515 LDAP_FREE( lc->lconn_krbinstance );
518 if ( lc->lconn_sb != ld->ld_sb ) {
519 ber_sockbuf_free( lc->lconn_sb );
521 if( lc->lconn_rebind_queue != NULL) {
523 for( i = 0; lc->lconn_rebind_queue[i] != NULL; i++) {
524 LDAP_VFREE(lc->lconn_rebind_queue[i]);
526 LDAP_FREE( lc->lconn_rebind_queue);
530 LDAP_LOG ( OPERATION, RESULTS,
531 "ldap_free_connection: actually freed\n", 0, 0, 0 );
533 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection: actually freed\n",
537 lc->lconn_lastused = time( NULL );
539 LDAP_LOG ( OPERATION, RESULTS, "ldap_free_connection: refcnt %d\n",
540 lc->lconn_refcnt, 0, 0 );
542 Debug( LDAP_DEBUG_TRACE, "ldap_free_connection: refcnt %d\n",
543 lc->lconn_refcnt, 0, 0 );
551 ldap_dump_connection( LDAP *ld, LDAPConn *lconns, int all )
556 fprintf( stderr, "** Connection%s:\n", all ? "s" : "" );
557 for ( lc = lconns; lc != NULL; lc = lc->lconn_next ) {
558 if ( lc->lconn_server != NULL ) {
559 fprintf( stderr, "* host: %s port: %d%s\n",
560 ( lc->lconn_server->lud_host == NULL ) ? "(null)"
561 : lc->lconn_server->lud_host,
562 lc->lconn_server->lud_port, ( lc->lconn_sb ==
563 ld->ld_sb ) ? " (default)" : "" );
565 fprintf( stderr, " refcnt: %d status: %s\n", lc->lconn_refcnt,
566 ( lc->lconn_status == LDAP_CONNST_NEEDSOCKET ) ?
567 "NeedSocket" : ( lc->lconn_status ==
568 LDAP_CONNST_CONNECTING ) ? "Connecting" : "Connected" );
569 fprintf( stderr, " last used: %s",
570 ldap_pvt_ctime( &lc->lconn_lastused, timebuf ));
571 if( lc->lconn_rebind_inprogress ) {
572 fprintf( stderr, " rebind in progress\n");
573 if( lc->lconn_rebind_queue != NULL) {
575 for( ;lc->lconn_rebind_queue[i] != NULL; i++) {
577 for( ;lc->lconn_rebind_queue[i][j] != 0; j++) {
578 fprintf( stderr, " queue %d entry %d - %s\n",
579 i, j, lc->lconn_rebind_queue[i][j]);
583 fprintf( stderr, " queue is empty\n");
586 fprintf(stderr, "\n");
595 ldap_dump_requests_and_responses( LDAP *ld )
600 #ifdef LDAP_R_COMPILE
601 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
603 fprintf( stderr, "** Outstanding Requests:\n" );
604 if (( lr = ld->ld_requests ) == NULL ) {
605 fprintf( stderr, " Empty\n" );
607 for ( ; lr != NULL; lr = lr->lr_next ) {
608 fprintf( stderr, " * msgid %d, origid %d, status %s\n",
609 lr->lr_msgid, lr->lr_origid,
610 ( lr->lr_status == LDAP_REQST_INPROGRESS ) ? "InProgress" :
611 ( lr->lr_status == LDAP_REQST_CHASINGREFS ) ? "ChasingRefs" :
612 ( lr->lr_status == LDAP_REQST_NOTCONNECTED ) ? "NotConnected" :
613 ( lr->lr_status == LDAP_REQST_WRITING) ? "Writing" :
614 ( lr->lr_status == LDAP_REQST_COMPLETED ? "Request Completed" : "Invalid Status"));
615 fprintf( stderr, " outstanding referrals %d, parent count %d\n",
616 lr->lr_outrefcnt, lr->lr_parentcnt );
618 #ifdef LDAP_R_COMPILE
619 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
621 fprintf( stderr, "** Response Queue:\n" );
622 if (( lm = ld->ld_responses ) == NULL ) {
623 fprintf( stderr, " Empty\n" );
625 for ( ; lm != NULL; lm = lm->lm_next ) {
626 fprintf( stderr, " * msgid %d, type %lu\n",
627 lm->lm_msgid, (unsigned long) lm->lm_msgtype );
628 if (( l = lm->lm_chain ) != NULL ) {
629 fprintf( stderr, " chained responses:\n" );
630 for ( ; l != NULL; l = l->lm_chain ) {
632 " * msgid %d, type %lu\n",
634 (unsigned long) l->lm_msgtype );
639 #endif /* LDAP_DEBUG */
642 ldap_free_request_int( LDAP *ld, LDAPRequest *lr )
644 if ( lr->lr_prev == NULL ) {
645 ld->ld_requests = lr->lr_next;
647 lr->lr_prev->lr_next = lr->lr_next;
650 if ( lr->lr_next != NULL ) {
651 lr->lr_next->lr_prev = lr->lr_prev;
654 if ( lr->lr_ber != NULL ) {
655 ber_free( lr->lr_ber, 1 );
658 if ( lr->lr_res_error != NULL ) {
659 LDAP_FREE( lr->lr_res_error );
662 if ( lr->lr_res_matched != NULL ) {
663 LDAP_FREE( lr->lr_res_matched );
670 ldap_free_request( LDAP *ld, LDAPRequest *lr )
672 LDAPRequest **ttmplr;
675 LDAP_LOG ( OPERATION, ARGS, "ldap_free_request (origid %d, msgid %d)\n",
676 lr->lr_origid, lr->lr_msgid, 0 );
678 Debug( LDAP_DEBUG_TRACE, "ldap_free_request (origid %d, msgid %d)\n",
679 lr->lr_origid, lr->lr_msgid, 0 );
682 /* free all referrals (child requests) */
683 while ( lr->lr_child )
684 ldap_free_request( ld, lr->lr_child );
686 if ( lr->lr_parent != NULL ) {
687 --lr->lr_parent->lr_outrefcnt;
688 for ( ttmplr = &lr->lr_parent->lr_child; *ttmplr && *ttmplr != lr; ttmplr = &(*ttmplr)->lr_refnext );
690 *ttmplr = lr->lr_refnext;
692 ldap_free_request_int( ld, lr );
700 * (IN) ld = LDAP connection handle
701 * (IN) lr = LDAP Request structure
702 * (IN) refs = array of pointers to referral strings that we will chase
703 * The array will be free'd by this function when no longer needed
704 * (IN) sref != 0 if following search reference
705 * (OUT) errstrp = Place to return a string of referrals which could not be followed
706 * (OUT) hadrefp = 1 if sucessfully followed referral
708 * Return value - number of referrals followed
711 ldap_chase_v3referrals( LDAP *ld, LDAPRequest *lr, char **refs, int sref, char **errstrp, int *hadrefp )
714 int unfollowedcnt = 0;
715 LDAPRequest *origreq;
716 LDAPURLDesc *srv = NULL;
718 char **refarray = NULL;
720 int rc, count, i, j, id;
723 ld->ld_errno = LDAP_SUCCESS; /* optimistic */
727 LDAP_LOG ( OPERATION, ENTRY, "ldap_chase_v3referrals\n", 0, 0, 0 );
729 Debug( LDAP_DEBUG_TRACE, "ldap_chase_v3referrals\n", 0, 0, 0 );
735 /* If no referrals in array, return */
736 if ( (refs == NULL) || ( (refs)[0] == NULL) ) {
741 /* Check for hop limit exceeded */
742 if ( lr->lr_parentcnt >= ld->ld_refhoplimit ) {
744 LDAP_LOG ( OPERATION, DETAIL1,
745 "ldap_chase_v3referrals: more than %d referral hops (dropping)\n",
746 ld->ld_refhoplimit, 0, 0 );
748 Debug( LDAP_DEBUG_ANY,
749 "more than %d referral hops (dropping)\n", ld->ld_refhoplimit, 0, 0 );
751 ld->ld_errno = LDAP_REFERRAL_LIMIT_EXCEEDED;
756 /* find original request */
758 origreq->lr_parent != NULL;
759 origreq = origreq->lr_parent )
766 /* parse out & follow referrals */
767 for( i=0; refarray[i] != NULL; i++) {
768 /* Parse the referral URL */
769 if (( rc = ldap_url_parse_ext( refarray[i], &srv)) != LDAP_SUCCESS) {
775 if( srv->lud_crit_exts ) {
776 /* we do not support any extensions */
777 ld->ld_errno = LDAP_NOT_SUPPORTED;
782 /* treat ldap://hostpart and ldap://hostpart/ the same */
783 if ( srv->lud_dn && srv->lud_dn[0] == '\0' ) {
784 LDAP_FREE( srv->lud_dn );
788 /* check connection for re-bind in progress */
789 if (( lc = find_connection( ld, srv, 1 )) != NULL ) {
790 if( lc->lconn_rebind_inprogress) {
791 /* We are already chasing a referral or search reference and a
792 * bind on that connection is in progress. We must queue
793 * referrals on that connection, so we don't get a request
794 * going out before the bind operation completes. This happens
795 * if two search references come in one behind the other
796 * for the same server with different contexts.
799 LDAP_LOG ( OPERATION, DETAIL1,
800 "ldap_chase_v3referrals: queue referral \"%s\"\n",
803 Debug( LDAP_DEBUG_TRACE,
804 "ldap_chase_v3referrals: queue referral \"%s\"\n",
807 if( lc->lconn_rebind_queue == NULL ) {
808 /* Create a referral list */
809 lc->lconn_rebind_queue =
810 (char ***) LDAP_MALLOC( sizeof(void *) * 2);
812 if( lc->lconn_rebind_queue == NULL) {
813 ld->ld_errno = LDAP_NO_MEMORY;
818 lc->lconn_rebind_queue[0] = refarray;
819 lc->lconn_rebind_queue[1] = NULL;
823 /* Count how many referral arrays we already have */
824 for( j = 0; lc->lconn_rebind_queue[j] != NULL; j++) {
828 /* Add the new referral to the list */
829 lc->lconn_rebind_queue = (char ***) LDAP_REALLOC(
830 lc->lconn_rebind_queue, sizeof(void *) * (j + 2));
832 if( lc->lconn_rebind_queue == NULL ) {
833 ld->ld_errno = LDAP_NO_MEMORY;
837 lc->lconn_rebind_queue[j] = refarray;
838 lc->lconn_rebind_queue[j+1] = NULL;
842 /* We have queued the referral/reference, now just return */
845 count = 1; /* Pretend we already followed referral */
849 /* Re-encode the request with the new starting point of the search.
850 * Note: In the future we also need to replace the filter if one
851 * was provided with the search reference
854 /* For references we don't want old dn if new dn empty */
855 if ( sref && srv->lud_dn == NULL ) {
856 srv->lud_dn = LDAP_STRDUP( "" );
859 LDAP_NEXT_MSGID( ld, id );
860 ber = re_encode_request( ld, origreq->lr_ber, id,
861 sref, srv, &rinfo.ri_request );
864 ld->ld_errno = LDAP_ENCODING_ERROR;
870 LDAP_LOG ( OPERATION, DETAIL1,
871 "ldap_chase_v3referrals: msgid %d, url \"%s\"\n",
872 lr->lr_msgid, refarray[i], 0 );
874 Debug( LDAP_DEBUG_TRACE,
875 "ldap_chase_v3referral: msgid %d, url \"%s\"\n",
876 lr->lr_msgid, refarray[i], 0);
879 /* Send the new request to the server - may require a bind */
880 rinfo.ri_msgid = origreq->lr_origid;
881 rinfo.ri_url = refarray[i];
882 #ifdef LDAP_R_COMPILE
883 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
885 rc = ldap_send_server_request( ld, ber, id,
886 origreq, srv, NULL, &rinfo );
887 #ifdef LDAP_R_COMPILE
888 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
891 /* Failure, try next referral in the list */
893 LDAP_LOG ( OPERATION, ERR,
894 "ldap_chase_v3referrals: Unable to chase referral \"%s\" (%s)\n",
895 refarray[i], ldap_err2string( ld->ld_errno ), 0 );
897 Debug( LDAP_DEBUG_ANY, "Unable to chase referral \"%s\" (%s)\n",
898 refarray[i], ldap_err2string( ld->ld_errno ), 0);
900 unfollowedcnt += ldap_append_referral( ld, &unfollowed, refarray[i]);
901 ldap_free_urllist(srv);
904 /* Success, no need to try this referral list further */
909 /* check if there is a queue of referrals that came in during bind */
911 if (( lc = find_connection( ld, srv, 1 )) == NULL ) {
912 ld->ld_errno = LDAP_OPERATIONS_ERROR;
918 if( lc->lconn_rebind_queue != NULL) {
919 /* Release resources of previous list */
920 LDAP_VFREE(refarray);
922 ldap_free_urllist(srv);
925 /* Pull entries off end of queue so list always null terminated */
926 for( j = 0; lc->lconn_rebind_queue[j] != NULL; j++) {
929 refarray = lc->lconn_rebind_queue[j-1];
930 lc->lconn_rebind_queue[j-1] = NULL;
931 /* we pulled off last entry from queue, free queue */
933 LDAP_FREE( lc->lconn_rebind_queue);
934 lc->lconn_rebind_queue = NULL;
936 /* restart the loop the with new referral list */
940 break; /* referral followed, break out of for loop */
944 LDAP_VFREE(refarray);
945 ldap_free_urllist(srv);
946 LDAP_FREE( *errstrp );
950 LDAP_FREE( unfollowed );
953 ld->ld_errno = LDAP_REFERRAL;
954 *errstrp = unfollowed;
960 * XXX merging of errors in this routine needs to be improved
963 ldap_chase_referrals( LDAP *ld,
971 char *p, *ref, *unfollowed;
972 LDAPRequest *origreq;
978 LDAP_LOG ( OPERATION, ENTRY, "ldap_chase_referrals\n", 0, 0, 0 );
980 Debug( LDAP_DEBUG_TRACE, "ldap_chase_referrals\n", 0, 0, 0 );
983 ld->ld_errno = LDAP_SUCCESS; /* optimistic */
986 if ( *errstrp == NULL ) {
990 len = strlen( *errstrp );
991 for ( p = *errstrp; len >= LDAP_REF_STR_LEN; ++p, --len ) {
992 if ( strncasecmp( p, LDAP_REF_STR, LDAP_REF_STR_LEN ) == 0 ) {
994 p += LDAP_REF_STR_LEN;
999 if ( len < LDAP_REF_STR_LEN ) {
1003 if ( lr->lr_parentcnt >= ld->ld_refhoplimit ) {
1005 LDAP_LOG ( OPERATION, ENTRY,
1006 "ldap_chase_referrals: more than %d referral hops (dropping)\n",
1007 ld->ld_refhoplimit, 0, 0 );
1009 Debug( LDAP_DEBUG_ANY,
1010 "more than %d referral hops (dropping)\n",
1011 ld->ld_refhoplimit, 0, 0 );
1013 /* XXX report as error in ld->ld_errno? */
1017 /* find original request */
1018 for ( origreq = lr; origreq->lr_parent != NULL;
1019 origreq = origreq->lr_parent ) {
1026 /* parse out & follow referrals */
1027 for ( ref = p; rc == 0 && ref != NULL; ref = p ) {
1028 if (( p = strchr( ref, '\n' )) != NULL ) {
1034 rc = ldap_url_parse_ext( ref, &srv );
1036 if ( rc != LDAP_URL_SUCCESS ) {
1038 LDAP_LOG ( OPERATION, DETAIL1,
1039 "ldap_chase_referrals: ignoring unknown referral <%s>\n",
1042 Debug( LDAP_DEBUG_TRACE,
1043 "ignoring unknown referral <%s>\n", ref, 0, 0 );
1045 rc = ldap_append_referral( ld, &unfollowed, ref );
1050 if( srv->lud_dn != NULL && srv->lud_dn == '\0' ) {
1051 LDAP_FREE( srv->lud_dn );
1056 LDAP_LOG ( OPERATION, DETAIL1,
1057 "ldap_chase_referrals: chasing LDAP referral <%s>\n", ref, 0, 0 );
1059 Debug( LDAP_DEBUG_TRACE,
1060 "chasing LDAP referral: <%s>\n", ref, 0, 0 );
1065 LDAP_NEXT_MSGID( ld, id );
1066 ber = re_encode_request( ld, origreq->lr_ber,
1067 id, sref, srv, &rinfo.ri_request );
1073 /* copy the complete referral for rebind process */
1074 rinfo.ri_url = LDAP_STRDUP( ref );
1076 rinfo.ri_msgid = origreq->lr_origid;
1078 #ifdef LDAP_R_COMPILE
1079 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
1081 rc = ldap_send_server_request( ld, ber, id,
1082 lr, srv, NULL, &rinfo );
1083 #ifdef LDAP_R_COMPILE
1084 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );
1087 LDAP_FREE( rinfo.ri_url );
1093 LDAP_LOG ( OPERATION, ERR,
1094 "ldap_chase_referrals: Unable to chase referral <%s>\n",
1095 ldap_err2string( ld->ld_errno), 0, 0 );
1097 Debug( LDAP_DEBUG_ANY,
1098 "Unable to chase referral (%s)\n",
1099 ldap_err2string( ld->ld_errno ), 0, 0 );
1101 rc = ldap_append_referral( ld, &unfollowed, ref );
1104 ldap_free_urllist(srv);
1107 LDAP_FREE( *errstrp );
1108 *errstrp = unfollowed;
1110 return(( rc == 0 ) ? count : rc );
1115 ldap_append_referral( LDAP *ld, char **referralsp, char *s )
1119 if ( *referralsp == NULL ) {
1121 *referralsp = (char *)LDAP_MALLOC( strlen( s ) + LDAP_REF_STR_LEN
1125 *referralsp = (char *)LDAP_REALLOC( *referralsp,
1126 strlen( *referralsp ) + strlen( s ) + 2 );
1129 if ( *referralsp == NULL ) {
1130 ld->ld_errno = LDAP_NO_MEMORY;
1135 strcpy( *referralsp, LDAP_REF_STR );
1137 strcat( *referralsp, "\n" );
1139 strcat( *referralsp, s );
1147 re_encode_request( LDAP *ld,
1148 BerElement *origber,
1155 * XXX this routine knows way too much about how the lber library works!
1163 BerElement tmpber, *ber;
1168 LDAP_LOG ( OPERATION, ARGS,
1169 "re_encode_request: new msgid %ld, new dn <%s>\n",
1171 ( srv == NULL || srv->lud_dn == NULL ) ? "NONE" : srv->lud_dn, 0 );
1173 Debug( LDAP_DEBUG_TRACE,
1174 "re_encode_request: new msgid %ld, new dn <%s>\n",
1176 ( srv == NULL || srv->lud_dn == NULL) ? "NONE" : srv->lud_dn, 0 );
1182 * all LDAP requests are sequences that start with a message id.
1183 * For all except delete, this is followed by a sequence that is
1184 * tagged with the operation code. For delete, the provided DN
1185 * is not wrapped by a sequence.
1187 rtag = ber_scanf( &tmpber, "{it", /*}*/ &along, &tag );
1189 if ( rtag == LBER_ERROR ) {
1190 ld->ld_errno = LDAP_DECODING_ERROR;
1195 if ( tag == LDAP_REQ_BIND ) {
1196 /* bind requests have a version number before the DN & other stuff */
1197 rtag = ber_scanf( &tmpber, "{ia" /*}*/, &ver, &orig_dn );
1199 } else if ( tag == LDAP_REQ_DELETE ) {
1200 /* delete requests don't have a DN wrapping sequence */
1201 rtag = ber_scanf( &tmpber, "a", &orig_dn );
1203 } else if ( tag == LDAP_REQ_SEARCH ) {
1204 /* search requests need to be re-scope-ed */
1205 rtag = ber_scanf( &tmpber, "{ae" /*"}"*/, &orig_dn, &scope );
1207 if( srv->lud_scope != LDAP_SCOPE_DEFAULT ) {
1208 /* use the scope provided in reference */
1209 scope = srv->lud_scope;
1211 } else if ( sref && scope != LDAP_SCOPE_SUBTREE ) {
1212 /* use scope implied by previous operation */
1215 /* subtree -> subtree */
1216 scope = LDAP_SCOPE_BASE;
1220 rtag = ber_scanf( &tmpber, "{a" /*}*/, &orig_dn );
1223 if( rtag == LBER_ERROR ) {
1224 ld->ld_errno = LDAP_DECODING_ERROR;
1228 if (( ber = ldap_alloc_ber_with_options( ld )) == NULL ) {
1232 if ( srv->lud_dn == NULL ) {
1238 if ( tag == LDAP_REQ_BIND ) {
1239 rc = ber_printf( ber, "{it{is" /*}}*/, msgid, tag, ver, dn );
1240 } else if ( tag == LDAP_REQ_DELETE ) {
1241 rc = ber_printf( ber, "{itsN}", msgid, tag, dn );
1242 } else if ( tag == LDAP_REQ_SEARCH ) {
1243 rc = ber_printf( ber, "{it{se" /*}}*/, msgid, tag, dn, scope );
1245 rc = ber_printf( ber, "{it{s" /*}}*/, msgid, tag, dn );
1248 LDAP_FREE( orig_dn );
1251 ld->ld_errno = LDAP_ENCODING_ERROR;
1256 if ( tag != LDAP_REQ_DELETE && (
1257 ber_write(ber, tmpber.ber_ptr, ( tmpber.ber_end - tmpber.ber_ptr ), 0)
1258 != ( tmpber.ber_end - tmpber.ber_ptr ) ||
1259 ber_printf( ber, /*{{*/ "N}N}" ) == -1 ) )
1261 ld->ld_errno = LDAP_ENCODING_ERROR;
1267 if ( ldap_debug & LDAP_DEBUG_PACKETS ) {
1269 LDAP_LOG ( OPERATION, DETAIL1,
1270 "re_encode_request: new request is:\n", 0, 0, 0 );
1272 Debug( LDAP_DEBUG_ANY, "re_encode_request new request is:\n",
1275 ber_log_dump( LDAP_DEBUG_BER, ldap_debug, ber, 0 );
1277 #endif /* LDAP_DEBUG */
1279 *type = tag; /* return request type */
1285 ldap_find_request_by_msgid( LDAP *ld, ber_int_t msgid )
1289 #ifdef LDAP_R_COMPILE
1290 ldap_pvt_thread_mutex_lock( &ld->ld_req_mutex );
1292 for ( lr = ld->ld_requests; lr != NULL; lr = lr->lr_next ) {
1293 if( lr->lr_status == LDAP_REQST_COMPLETED ) {
1294 continue; /* Skip completed requests */
1296 if ( msgid == lr->lr_msgid ) {
1300 #ifdef LDAP_R_COMPILE
1301 ldap_pvt_thread_mutex_unlock( &ld->ld_req_mutex );