1 /* bind.c - ldap backend bind function */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1999-2006 The OpenLDAP Foundation.
6 * Portions Copyright 2000-2003 Pierangelo Masarati.
7 * Portions Copyright 1999-2003 Howard Chu.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted only as authorized by the OpenLDAP
14 * A copy of this license is available in the file LICENSE in the
15 * top-level directory of the distribution or, alternatively, at
16 * <http://www.OpenLDAP.org/license.html>.
19 * This work was initially developed by Howard Chu for inclusion
20 * in OpenLDAP Software and subsequently enhanced by Pierangelo
29 #include <ac/socket.h>
30 #include <ac/string.h>
34 #include "back-ldap.h"
36 #include <lutil_ldap.h>
38 #ifndef PRINT_CONNTREE
39 #define PRINT_CONNTREE 0
40 #endif /* !PRINT_CONNTREE */
42 #define LDAP_CONTROL_OBSOLETE_PROXY_AUTHZ "2.16.840.1.113730.3.4.12"
44 #if PRINT_CONNTREE > 0
46 ravl_print( Avlnode *root, int depth )
55 ravl_print( root->avl_right, depth+1 );
57 for ( i = 0; i < depth; i++ ) {
58 fprintf( stderr, "-" );
62 fprintf( stderr, "lc=%p local=\"%s\" conn=%p %s refcnt=%d\n",
64 lc->lc_local_ndn.bv_val ? lc->lc_local_ndn.bv_val : "",
66 avl_bf2str( root->avl_bf ), lc->lc_refcnt );
68 ravl_print( root->avl_left, depth+1 );
72 myprint( Avlnode *root, char *msg )
74 fprintf( stderr, "========> %s\n", msg );
77 fprintf( stderr, "\tNULL\n" );
80 ravl_print( root, 0 );
83 fprintf( stderr, "<======== %s\n", msg );
85 #endif /* PRINT_CONNTREE */
88 ldap_back_proxy_authz_bind( ldapconn_t *lc, Operation *op, SlapReply *rs, ldap_back_send_t sendok );
91 ldap_back_prepare_conn( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok );
94 ldap_back_conndnlc_cmp( const void *c1, const void *c2 );
97 ldap_back_bind( Operation *op, SlapReply *rs )
99 ldapinfo_t *li = (ldapinfo_t *) op->o_bd->be_private;
105 lc = ldap_back_getconn( op, rs, LDAP_BACK_BIND_SERR );
110 if ( !BER_BVISNULL( &lc->lc_bound_ndn ) ) {
111 ch_free( lc->lc_bound_ndn.bv_val );
112 BER_BVZERO( &lc->lc_bound_ndn );
114 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
116 /* method is always LDAP_AUTH_SIMPLE if we got here */
117 rs->sr_err = ldap_sasl_bind( lc->lc_ld, op->o_req_dn.bv_val,
119 &op->orb_cred, op->o_ctrls, NULL, &msgid );
120 rc = ldap_back_op_result( lc, op, rs, msgid, 0, LDAP_BACK_SENDERR );
122 if ( rc == LDAP_SUCCESS ) {
123 /* If defined, proxyAuthz will be used also when
124 * back-ldap is the authorizing backend; for this
125 * purpose, a successful bind is followed by a
126 * bind with the configured identity assertion */
127 /* NOTE: use with care */
128 if ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) {
129 ldap_back_proxy_authz_bind( lc, op, rs, LDAP_BACK_SENDERR );
130 if ( !LDAP_BACK_CONN_ISBOUND( lc ) ) {
136 /* rebind is now done inside ldap_back_proxy_authz_bind()
137 * in case of success */
138 LDAP_BACK_CONN_ISBOUND_SET( lc );
139 ber_dupbv( &lc->lc_bound_ndn, &op->o_req_ndn );
141 if ( LDAP_BACK_SAVECRED( li ) ) {
142 if ( !BER_BVISNULL( &lc->lc_cred ) ) {
143 memset( lc->lc_cred.bv_val, 0,
144 lc->lc_cred.bv_len );
146 ber_bvreplace( &lc->lc_cred, &op->orb_cred );
147 ldap_set_rebind_proc( lc->lc_ld, li->li_rebind_f, lc );
152 assert( lc->lc_binding == 1 );
155 /* must re-insert if local DN changed as result of bind */
156 if ( !LDAP_BACK_CONN_ISBOUND( lc )
157 || ( LDAP_BACK_CONN_ISBOUND( lc )
158 && !dn_match( &op->o_req_ndn, &lc->lc_local_ndn ) ) )
163 /* wait for all other ops to release the connection */
165 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
166 if ( lc->lc_refcnt > 1 ) {
167 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
168 ldap_pvt_thread_yield();
172 assert( lc->lc_refcnt == 1 );
173 tmplc = avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
174 ldap_back_conndnlc_cmp );
175 assert( tmplc == NULL || lc == tmplc );
177 /* delete all cached connections with the current connection */
178 if ( LDAP_BACK_SINGLECONN( li ) ) {
179 while ( ( tmplc = avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc, ldap_back_conn_cmp ) ) != NULL )
181 Debug( LDAP_DEBUG_TRACE,
182 "=>ldap_back_bind: destroying conn %ld (refcnt=%u)\n",
183 LDAP_BACK_PCONN_ID( lc->lc_conn ), lc->lc_refcnt, 0 );
185 if ( lc->lc_refcnt != 0 ) {
187 LDAP_BACK_CONN_TAINTED_SET( tmplc );
191 * Needs a test because the handler may be corrupted,
192 * and calling ldap_unbind on a corrupted header results
193 * in a segmentation fault
195 ldap_back_conn_free( tmplc );
200 if ( LDAP_BACK_CONN_ISBOUND( lc ) ) {
201 ber_bvreplace( &lc->lc_local_ndn, &op->o_req_ndn );
202 if ( be_isroot_dn( op->o_bd, &op->o_req_ndn ) ) {
203 lc->lc_conn = LDAP_BACK_PCONN_SET( op );
205 lerr = avl_insert( &li->li_conninfo.lai_tree, (caddr_t)lc,
206 ldap_back_conndn_cmp, ldap_back_conndn_dup );
209 #if PRINT_CONNTREE > 0
210 myprint( li->li_conninfo.lai_tree, "ldap_back_bind" );
211 #endif /* PRINT_CONNTREE */
213 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
219 /* duplicate; someone else successfully bound
220 * on the same connection with the same identity;
221 * we can do this because lc_refcnt == 1 */
222 ldap_back_conn_free( lc );
228 ldap_back_release_conn( op, rs, lc );
235 * ldap_back_conndn_cmp
237 * compares two ldapconn_t based on the value of the conn pointer
238 * and of the local DN; used by avl stuff for insert, lookup
242 ldap_back_conndn_cmp( const void *c1, const void *c2 )
244 const ldapconn_t *lc1 = (const ldapconn_t *)c1;
245 const ldapconn_t *lc2 = (const ldapconn_t *)c2;
248 /* If local DNs don't match, it is definitely not a match */
249 /* For shared sessions, conn is NULL. Only explicitly
250 * bound sessions will have non-NULL conn.
252 rc = SLAP_PTRCMP( lc1->lc_conn, lc2->lc_conn );
254 rc = ber_bvcmp( &lc1->lc_local_ndn, &lc2->lc_local_ndn );
261 * ldap_back_conndnlc_cmp
263 * compares two ldapconn_t based on the value of the conn pointer,
264 * the local DN and the lc pointer; used by avl stuff for insert, lookup
268 ldap_back_conndnlc_cmp( const void *c1, const void *c2 )
270 const ldapconn_t *lc1 = (const ldapconn_t *)c1;
271 const ldapconn_t *lc2 = (const ldapconn_t *)c2;
274 /* If local DNs don't match, it is definitely not a match */
275 /* For shared sessions, conn is NULL. Only explicitly
276 * bound sessions will have non-NULL conn.
278 rc = SLAP_PTRCMP( lc1->lc_conn, lc2->lc_conn );
280 rc = ber_bvcmp( &lc1->lc_local_ndn, &lc2->lc_local_ndn );
282 rc = SLAP_PTRCMP( lc1, lc2 );
292 * compares two ldapconn_t based on the value of the conn pointer;
293 * used by avl stuff for delete of all conns with the same connid
296 ldap_back_conn_cmp( const void *c1, const void *c2 )
298 const ldapconn_t *lc1 = (const ldapconn_t *)c1;
299 const ldapconn_t *lc2 = (const ldapconn_t *)c2;
301 /* For shared sessions, conn is NULL. Only explicitly
302 * bound sessions will have non-NULL conn.
304 return SLAP_PTRCMP( lc1->lc_conn, lc2->lc_conn );
308 * ldap_back_conndn_dup
310 * returns -1 in case a duplicate ldapconn_t has been inserted;
314 ldap_back_conndn_dup( void *c1, void *c2 )
316 ldapconn_t *lc1 = (ldapconn_t *)c1;
317 ldapconn_t *lc2 = (ldapconn_t *)c2;
319 /* Cannot have more than one shared session with same DN */
320 if ( lc1->lc_conn == lc2->lc_conn &&
321 dn_match( &lc1->lc_local_ndn, &lc2->lc_local_ndn ) )
330 ldap_back_freeconn( Operation *op, ldapconn_t *lc, int dolock )
332 ldapinfo_t *li = (ldapinfo_t *) op->o_bd->be_private;
336 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
339 tmplc = avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
340 ldap_back_conndnlc_cmp );
341 assert( LDAP_BACK_CONN_TAINTED( lc ) || tmplc == lc );
342 if ( lc->lc_refcnt == 0 ) {
343 ldap_back_conn_free( (void *)lc );
347 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
364 int rc = LDAP_SUCCESS;
367 /* this is ridiculous... */
368 dummy.li_flags = flags;
370 /* start TLS ("tls-[try-]{start,propagate}" statements) */
371 if ( ( LDAP_BACK_USE_TLS( &dummy ) || ( *is_tls && LDAP_BACK_PROPAGATE_TLS( &dummy ) ) )
372 && !ldap_is_ldaps_url( url ) )
374 #ifdef SLAP_STARTTLS_ASYNCHRONOUS
376 * use asynchronous StartTLS
377 * in case, chase referral (not implemented yet)
381 if ( protocol == 0 ) {
382 ldap_get_option( ld, LDAP_OPT_PROTOCOL_VERSION,
386 if ( protocol < LDAP_VERSION3 ) {
387 /* we should rather bail out... */
388 rc = LDAP_UNWILLING_TO_PERFORM;
389 *text = "invalid protocol version";
392 if ( rc == LDAP_SUCCESS ) {
393 rc = ldap_start_tls( ld, NULL, NULL, &msgid );
396 if ( rc == LDAP_SUCCESS ) {
397 LDAPMessage *res = NULL;
400 LDAP_BACK_TV_SET( &tv );
403 rc = ldap_result( ld, msgid, LDAP_MSG_ALL, &tv, &res );
405 rc = LDAP_UNAVAILABLE;
407 } else if ( rc == 0 ) {
408 if ( retries != LDAP_BACK_RETRY_NEVER ) {
409 ldap_pvt_thread_yield();
413 LDAP_BACK_TV_SET( &tv );
416 rc = LDAP_UNAVAILABLE;
418 } else if ( rc == LDAP_RES_EXTENDED ) {
419 struct berval *data = NULL;
421 rc = ldap_parse_extended_result( ld, res,
423 if ( rc == LDAP_SUCCESS ) {
425 rc = ldap_parse_result( ld, res, &err,
426 NULL, NULL, NULL, NULL, 1 );
427 if ( rc == LDAP_SUCCESS ) {
432 /* FIXME: in case a referral
433 * is returned, should we try
434 * using it instead of the
436 if ( rc == LDAP_SUCCESS ) {
437 rc = ldap_install_tls( ld );
439 } else if ( rc == LDAP_REFERRAL ) {
440 rc = LDAP_UNWILLING_TO_PERFORM;
441 *text = "unwilling to chase referral returned by Start TLS exop";
445 if ( data->bv_val ) {
446 ber_memfree( data->bv_val );
460 #else /* ! SLAP_STARTTLS_ASYNCHRONOUS */
462 * use synchronous StartTLS
464 rc = ldap_start_tls_s( ld, NULL, NULL );
465 #endif /* ! SLAP_STARTTLS_ASYNCHRONOUS */
467 /* if StartTLS is requested, only attempt it if the URL
468 * is not "ldaps://"; this may occur not only in case
469 * of misconfiguration, but also when used in the chain
470 * overlay, where the "uri" can be parsed out of a referral */
476 case LDAP_SERVER_DOWN:
480 if ( LDAP_BACK_TLS_CRITICAL( &dummy ) ) {
481 *text = "could not start TLS";
485 /* in case Start TLS is not critical */
497 #endif /* HAVE_TLS */
500 ldap_back_prepare_conn( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
502 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
506 int is_tls = op->o_conn->c_is_tls;
507 #endif /* HAVE_TLS */
509 assert( lcp != NULL );
511 ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
512 rs->sr_err = ldap_initialize( &ld, li->li_uri );
513 ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
514 if ( rs->sr_err != LDAP_SUCCESS ) {
518 if ( li->li_urllist_f ) {
519 ldap_set_urllist_proc( ld, li->li_urllist_f, li->li_urllist_p );
522 /* Set LDAP version. This will always succeed: If the client
523 * bound with a particular version, then so can we.
525 if ( li->li_version != 0 ) {
526 version = li->li_version;
528 } else if ( op->o_protocol != 0 ) {
529 version = op->o_protocol;
532 /* assume it's an internal op; set to LDAPv3 */
533 version = LDAP_VERSION3;
535 ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION, (const void *)&version );
537 /* automatically chase referrals ("chase-referrals [{yes|no}]" statement) */
538 ldap_set_option( ld, LDAP_OPT_REFERRALS,
539 LDAP_BACK_CHASE_REFERRALS( li ) ? LDAP_OPT_ON : LDAP_OPT_OFF );
541 if ( li->li_network_timeout > 0 ) {
544 tv.tv_sec = li->li_network_timeout;
546 ldap_set_option( ld, LDAP_OPT_NETWORK_TIMEOUT, (const void *)&tv );
550 ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
551 rs->sr_err = ldap_back_start_tls( ld, op->o_protocol, &is_tls,
552 li->li_uri, li->li_flags, li->li_nretries, &rs->sr_text );
553 ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
554 if ( rs->sr_err != LDAP_SUCCESS ) {
555 ldap_unbind_ext( ld, NULL, NULL );
558 #endif /* HAVE_TLS */
560 if ( *lcp == NULL ) {
561 *lcp = (ldapconn_t *)ch_calloc( 1, sizeof( ldapconn_t ) );
562 (*lcp)->lc_flags = li->li_flags;
565 (*lcp)->lc_refcnt = 1;
566 (*lcp)->lc_binding = 1;
569 LDAP_BACK_CONN_ISTLS_SET( *lcp );
571 LDAP_BACK_CONN_ISTLS_CLEAR( *lcp );
573 #endif /* HAVE_TLS */
576 if ( rs->sr_err != LDAP_SUCCESS ) {
577 rs->sr_err = slap_map_api2result( rs );
578 if ( sendok & LDAP_BACK_SENDERR ) {
579 if ( rs->sr_text == NULL ) {
580 rs->sr_text = "ldap_initialize() failed";
582 send_ldap_result( op, rs );
587 if ( li->li_conn_ttl > 0 ) {
588 (*lcp)->lc_create_time = op->o_time;
596 ldap_back_getconn( Operation *op, SlapReply *rs, ldap_back_send_t sendok )
598 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
599 ldapconn_t *lc = NULL,
601 int refcnt = 1, binding = 1;
603 /* if the server is quarantined, and
604 * - the current interval did not expire yet, or
605 * - no more retries should occur,
606 * don't return the connection */
607 if ( li->li_isquarantined ) {
608 slap_retry_info_t *ri = &li->li_quarantine;
611 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
612 if ( li->li_isquarantined == LDAP_BACK_FQ_YES ) {
613 dont_retry = ( ri->ri_num[ ri->ri_idx ] == SLAP_RETRYNUM_TAIL
614 || slap_get_time() < ri->ri_last + ri->ri_interval[ ri->ri_idx ] );
616 Debug( LDAP_DEBUG_ANY,
617 "%s: ldap_back_getconn quarantine "
618 "retry block #%d try #%d.\n",
619 op->o_log_prefix, ri->ri_idx, ri->ri_count );
620 li->li_isquarantined = LDAP_BACK_FQ_RETRYING;
623 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
626 rs->sr_err = LDAP_UNAVAILABLE;
627 if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
628 send_ldap_result( op, rs );
634 /* Internal searches are privileged and shared. So is root. */
635 if ( op->o_do_not_cache || be_isroot( op ) ) {
636 LDAP_BACK_CONN_ISPRIV_SET( &lc_curr );
637 lc_curr.lc_local_ndn = op->o_bd->be_rootndn;
638 lc_curr.lc_conn = LDAP_BACK_PCONN_SET( op );
641 lc_curr.lc_local_ndn = op->o_ndn;
642 /* Explicit binds must not be shared */
643 if ( op->o_tag == LDAP_REQ_BIND || SLAP_IS_AUTHZ_BACKEND( op ) ) {
644 lc_curr.lc_conn = op->o_conn;
647 lc_curr.lc_conn = LDAP_BACK_PCONN_SET( op );
651 /* Explicit Bind requests always get their own conn */
652 if ( !( sendok & LDAP_BACK_BINDING ) ) {
653 /* Searches for a ldapconn in the avl tree */
655 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
657 lc = (ldapconn_t *)avl_find( li->li_conninfo.lai_tree,
658 (caddr_t)&lc_curr, ldap_back_conndn_cmp );
660 /* Don't reuse connections while they're still binding */
661 if ( LDAP_BACK_CONN_BINDING( lc ) ) {
662 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
663 ldap_pvt_thread_yield();
667 refcnt = ++lc->lc_refcnt;
668 binding = ++lc->lc_binding;
670 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
673 /* Looks like we didn't get a bind. Open a new session... */
675 if ( ldap_back_prepare_conn( &lc, op, rs, sendok ) != LDAP_SUCCESS ) {
678 if ( sendok & LDAP_BACK_BINDING ) {
679 LDAP_BACK_CONN_BINDING_SET( lc );
681 lc->lc_conn = lc_curr.lc_conn;
682 ber_dupbv( &lc->lc_local_ndn, &lc_curr.lc_local_ndn );
684 if ( LDAP_BACK_CONN_ISPRIV( &lc_curr ) ) {
685 ber_dupbv( &lc->lc_cred, &li->li_acl_passwd );
686 ber_dupbv( &lc->lc_bound_ndn, &li->li_acl_authcDN );
687 LDAP_BACK_CONN_ISPRIV_SET( lc );
690 BER_BVZERO( &lc->lc_cred );
691 BER_BVZERO( &lc->lc_bound_ndn );
692 if ( !BER_BVISEMPTY( &op->o_ndn )
693 && SLAP_IS_AUTHZ_BACKEND( op ) )
695 ber_dupbv( &lc->lc_bound_ndn, &op->o_ndn );
700 /* if start TLS failed but it was not mandatory,
701 * check if the non-TLS connection was already
702 * in cache; in case, destroy the newly created
703 * connection and use the existing one */
704 if ( lc->lc_conn == LDAP_BACK_PCONN_TLS
705 && !ldap_tls_inplace( lc->lc_ld ) )
709 lc_curr.lc_conn = LDAP_BACK_PCONN;
710 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
711 tmplc = (ldapconn_t *)avl_find( li->li_conninfo.lai_tree,
712 (caddr_t)&lc_curr, ldap_back_conndn_cmp );
713 if ( tmplc != NULL ) {
714 refcnt = ++tmplc->lc_refcnt;
715 binding = ++tmplc->lc_binding;
716 ldap_back_conn_free( lc );
719 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
721 if ( tmplc != NULL ) {
725 #endif /* HAVE_TLS */
727 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
729 /* Inserts the newly created ldapconn in the avl tree */
730 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
732 assert( lc->lc_refcnt == 1 );
733 assert( lc->lc_binding == 1 );
734 rs->sr_err = avl_insert( &li->li_conninfo.lai_tree, (caddr_t)lc,
735 ldap_back_conndn_cmp, ldap_back_conndn_dup );
737 #if PRINT_CONNTREE > 0
738 myprint( li->li_conninfo.lai_tree, "ldap_back_getconn" );
739 #endif /* PRINT_CONNTREE */
741 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
743 Debug( LDAP_DEBUG_TRACE,
744 "=>ldap_back_getconn: conn %p inserted refcnt=%u binding=%u\n",
745 (void *)lc, refcnt, binding );
747 /* Err could be -1 in case a duplicate ldapconn is inserted */
748 switch ( rs->sr_err ) {
753 if ( !( sendok & LDAP_BACK_BINDING ) ) {
754 /* duplicate: free and try to get the newly created one */
757 /* taint connection, so that it'll be freed when released */
758 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
759 (void *)avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
760 ldap_back_conndnlc_cmp );
761 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
762 LDAP_BACK_CONN_TAINTED_SET( lc );
766 ldap_back_conn_free( lc );
767 rs->sr_err = LDAP_OTHER;
768 rs->sr_text = "proxy bind collision";
769 if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
770 send_ldap_result( op, rs );
779 if ( ( li->li_idle_timeout != 0 && op->o_time > lc->lc_time + li->li_idle_timeout )
780 || ( li->li_conn_ttl != 0 && op->o_time > lc->lc_create_time + li->li_conn_ttl ) )
784 /* let it be used, but taint/delete it so that
785 * no-one else can look it up any further */
786 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
787 (void *)avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
788 ldap_back_conndnlc_cmp );
789 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
790 LDAP_BACK_CONN_TAINTED_SET( lc );
793 if ( LogTest( LDAP_DEBUG_TRACE ) ) {
794 char buf[ SLAP_TEXT_BUFLEN ];
796 snprintf( buf, sizeof( buf ),
797 "conn %p fetched refcnt=%u binding=%u%s",
798 (void *)lc, refcnt, binding, expiring ? " expiring" : "" );
799 Debug( LDAP_DEBUG_TRACE,
800 "=>ldap_back_getconn: %s.\n", buf, 0, 0 );
806 #endif /* HAVE_TLS */
807 if ( li->li_idle_timeout && lc ) {
808 lc->lc_time = op->o_time;
815 ldap_back_release_conn_lock(
821 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
824 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
826 assert( lc->lc_refcnt > 0 );
827 LDAP_BACK_CONN_BINDING_CLEAR( lc );
829 if ( LDAP_BACK_CONN_TAINTED( lc ) ) {
830 ldap_back_freeconn( op, lc, 0 );
833 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
838 ldap_back_quarantine(
843 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
845 slap_retry_info_t *ri = &li->li_quarantine;
848 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
851 if ( rs->sr_err == LDAP_UNAVAILABLE ) {
852 switch ( li->li_isquarantined ) {
853 case LDAP_BACK_FQ_NO:
854 Debug( LDAP_DEBUG_ANY,
855 "%s: ldap_back_quarantine enter.\n",
856 op->o_log_prefix, 0, 0 );
862 case LDAP_BACK_FQ_RETRYING:
863 Debug( LDAP_DEBUG_ANY,
864 "%s: ldap_back_quarantine block #%d try #%d failed.\n",
865 op->o_log_prefix, ri->ri_idx, ri->ri_count );
868 if ( ri->ri_num[ ri->ri_idx ] != SLAP_RETRYNUM_FOREVER
869 && ri->ri_count == ri->ri_num[ ri->ri_idx ] )
880 li->li_isquarantined = LDAP_BACK_FQ_YES;
881 ri->ri_last = slap_get_time();
883 } else if ( li->li_isquarantined != LDAP_BACK_FQ_NO ) {
884 Debug( LDAP_DEBUG_ANY,
885 "%s: ldap_back_quarantine exit.\n",
886 op->o_log_prefix, ri->ri_idx, ri->ri_count );
888 if ( li->li_quarantine_func ) {
889 (void)li->li_quarantine_func( li,
890 li->li_quarantine_arg );
895 li->li_isquarantined = LDAP_BACK_FQ_NO;
899 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
906 * Note: as the check for the value of lc->lc_bound was already here, I removed
907 * it from all the callers, and I made the function return the flag, so
908 * it can be used to simplify the check.
910 * Note: dolock indicates whether li->li_conninfo.lai_mutex must be locked or not
913 ldap_back_dobind_int(
917 ldap_back_send_t sendok,
921 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
926 assert( retries >= 0 );
930 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
933 if ( binding == 0 ) {
934 /* check if already bound */
935 rc = LDAP_BACK_CONN_ISBOUND( lc );
939 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
944 if ( LDAP_BACK_CONN_BINDING( lc ) ) {
945 /* if someone else is about to bind it, give up and retry */
947 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
949 ldap_pvt_thread_yield();
953 /* otherwise this thread will bind it */
954 LDAP_BACK_CONN_BINDING_SET( lc );
959 /* wait for pending operations to finish */
960 /* FIXME: may become a bottleneck! */
961 if ( lc->lc_refcnt != lc->lc_binding ) {
963 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
965 ldap_pvt_thread_yield();
970 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
974 while ( lc->lc_refcnt > 1 ) {
975 ldap_pvt_thread_yield();
976 rc = LDAP_BACK_CONN_ISBOUND( lc );
983 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
985 LDAP_BACK_CONN_BINDING_SET( lc );
987 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
992 * FIXME: we need to let clients use proxyAuthz
993 * otherwise we cannot do symmetric pools of servers;
994 * we have to live with the fact that a user can
995 * authorize itself as any ID that is allowed
996 * by the authzTo directive of the "proxyauthzdn".
999 * NOTE: current Proxy Authorization specification
1000 * and implementation do not allow proxy authorization
1001 * control to be provided with Bind requests
1004 * if no bind took place yet, but the connection is bound
1005 * and the "idassert-authcDN" (or other ID) is set,
1006 * then bind as the asserting identity and explicitly
1007 * add the proxyAuthz control to every operation with the
1008 * dn bound to the connection as control value.
1009 * This is done also if this is the authrizing backend,
1010 * but the "override" flag is given to idassert.
1011 * It allows to use SASL bind and yet proxyAuthz users
1013 if ( op->o_conn != NULL &&
1014 !op->o_do_not_cache &&
1015 ( BER_BVISNULL( &lc->lc_bound_ndn ) ||
1016 ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) ) )
1018 (void)ldap_back_proxy_authz_bind( lc, op, rs, sendok );
1022 #ifdef HAVE_CYRUS_SASL
1023 if ( LDAP_BACK_CONN_ISPRIV( lc )
1024 && li->li_acl_authmethod == LDAP_AUTH_SASL )
1026 void *defaults = NULL;
1028 if ( li->li_acl_secprops != NULL ) {
1029 rc = ldap_set_option( lc->lc_ld,
1030 LDAP_OPT_X_SASL_SECPROPS, li->li_acl_secprops );
1032 if ( rc != LDAP_OPT_SUCCESS ) {
1033 Debug( LDAP_DEBUG_ANY, "Error: ldap_set_option "
1034 "(SECPROPS,\"%s\") failed!\n",
1035 li->li_acl_secprops, 0, 0 );
1040 defaults = lutil_sasl_defaults( lc->lc_ld,
1041 li->li_acl_sasl_mech.bv_val,
1042 li->li_acl_sasl_realm.bv_val,
1043 li->li_acl_authcID.bv_val,
1044 li->li_acl_passwd.bv_val,
1047 rs->sr_err = ldap_sasl_interactive_bind_s( lc->lc_ld,
1048 li->li_acl_authcDN.bv_val,
1049 li->li_acl_sasl_mech.bv_val, NULL, NULL,
1050 LDAP_SASL_QUIET, lutil_sasl_interact,
1053 lutil_sasl_freedefs( defaults );
1055 rs->sr_err = slap_map_api2result( rs );
1056 if ( rs->sr_err != LDAP_SUCCESS ) {
1057 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1058 send_ldap_result( op, rs );
1061 LDAP_BACK_CONN_ISBOUND_SET( lc );
1065 #endif /* HAVE_CYRUS_SASL */
1068 rs->sr_err = ldap_sasl_bind( lc->lc_ld,
1069 BER_BVISNULL( &lc->lc_cred ) ? "" : lc->lc_bound_ndn.bv_val,
1070 LDAP_SASL_SIMPLE, &lc->lc_cred,
1071 NULL, NULL, &msgid );
1073 if ( rs->sr_err == LDAP_SERVER_DOWN ) {
1074 if ( retries != LDAP_BACK_RETRY_NEVER ) {
1076 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1079 assert( lc->lc_refcnt > 0 );
1080 if ( lc->lc_refcnt == 1 ) {
1081 ldap_unbind_ext( lc->lc_ld, NULL, NULL );
1084 /* lc here must be the regular lc, reset and ready for init */
1085 rs->sr_err = ldap_back_prepare_conn( &lc, op, rs, sendok );
1086 if ( rs->sr_err != LDAP_SUCCESS ) {
1093 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1096 if ( rs->sr_err == LDAP_SUCCESS ) {
1097 if ( retries > 0 ) {
1105 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1109 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1113 if ( LDAP_BACK_QUARANTINE( li ) ) {
1114 ldap_back_quarantine( op, rs, dolock );
1117 /* FIXME: one binding-- too many? */
1119 ldap_back_freeconn( op, lc, dolock );
1120 rs->sr_err = slap_map_api2result( rs );
1125 rc = ldap_back_op_result( lc, op, rs, msgid, 0, sendok );
1126 if ( rc == LDAP_SUCCESS ) {
1127 LDAP_BACK_CONN_ISBOUND_SET( lc );
1131 if ( LDAP_BACK_QUARANTINE( li ) ) {
1132 ldap_back_quarantine( op, rs, dolock );
1136 LDAP_BACK_CONN_BINDING_CLEAR( lc );
1137 rc = LDAP_BACK_CONN_ISBOUND( lc );
1139 ldap_back_release_conn_lock( op, rs, lc, dolock );
1146 ldap_back_dobind( ldapconn_t *lc, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
1148 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1150 return ldap_back_dobind_int( lc, op, rs, sendok, li->li_nretries, 1 );
1154 * ldap_back_default_rebind
1156 * This is a callback used for chasing referrals using the same
1157 * credentials as the original user on this session.
1160 ldap_back_default_rebind( LDAP *ld, LDAP_CONST char *url, ber_tag_t request,
1161 ber_int_t msgid, void *params )
1163 ldapconn_t *lc = (ldapconn_t *)params;
1166 /* ... otherwise we couldn't get here */
1167 assert( lc != NULL );
1169 if ( !ldap_tls_inplace( ld ) ) {
1170 int is_tls = LDAP_BACK_CONN_ISTLS( lc ),
1172 const char *text = NULL;
1174 rc = ldap_back_start_tls( ld, 0, &is_tls, url, lc->lc_flags,
1175 LDAP_BACK_RETRY_DEFAULT, &text );
1176 if ( rc != LDAP_SUCCESS ) {
1180 #endif /* HAVE_TLS */
1182 /* FIXME: add checks on the URL/identity? */
1184 return ldap_sasl_bind_s( ld,
1185 BER_BVISNULL( &lc->lc_cred ) ? "" : lc->lc_bound_ndn.bv_val,
1186 LDAP_SASL_SIMPLE, &lc->lc_cred, NULL, NULL, NULL );
1190 * ldap_back_default_urllist
1193 ldap_back_default_urllist(
1195 LDAPURLDesc **urllist,
1199 ldapinfo_t *li = (ldapinfo_t *)params;
1200 LDAPURLDesc **urltail;
1202 if ( urllist == url ) {
1203 return LDAP_SUCCESS;
1206 for ( urltail = &(*url)->lud_next; *urltail; urltail = &(*urltail)->lud_next )
1209 *urltail = *urllist;
1213 ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
1215 ch_free( li->li_uri );
1218 ldap_get_option( ld, LDAP_OPT_URI, (void *)&li->li_uri );
1219 ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
1221 return LDAP_SUCCESS;
1230 ldap_back_send_t sendok )
1232 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1234 /* default behavior */
1235 if ( LDAP_BACK_ABANDON( li ) ) {
1236 return ldap_abandon_ext( lc->lc_ld, msgid, NULL, NULL );
1239 if ( LDAP_BACK_IGNORE( li ) ) {
1240 return LDAP_SUCCESS;
1243 if ( LDAP_BACK_CANCEL( li ) ) {
1244 /* FIXME: asynchronous? */
1245 return ldap_cancel_s( lc->lc_ld, msgid, NULL, NULL );
1254 ldap_back_op_result(
1260 ldap_back_send_t sendok )
1262 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1265 LDAPMessage *res = NULL;
1268 LDAPControl **ctrls = NULL;
1270 #define ERR_OK(err) ((err) == LDAP_SUCCESS || (err) == LDAP_COMPARE_FALSE || (err) == LDAP_COMPARE_TRUE)
1273 rs->sr_matched = NULL;
1275 rs->sr_ctrls = NULL;
1277 /* if the error recorded in the reply corresponds
1278 * to a successful state, get the error from the
1279 * remote server response */
1280 if ( ERR_OK( rs->sr_err ) ) {
1285 tv.tv_sec = timeout;
1289 LDAP_BACK_TV_SET( &tv );
1293 /* if result parsing fails, note the failure reason */
1294 rc = ldap_result( lc->lc_ld, msgid, LDAP_MSG_ALL, &tv, &res );
1298 (void)ldap_back_cancel( lc, op, rs, msgid, sendok );
1299 rs->sr_err = op->o_protocol >= LDAP_VERSION3 ?
1300 LDAP_ADMINLIMIT_EXCEEDED : LDAP_OPERATIONS_ERROR;
1301 rs->sr_text = "Operation timed out";
1305 LDAP_BACK_TV_SET( &tv );
1306 ldap_pvt_thread_yield();
1310 ldap_get_option( lc->lc_ld, LDAP_OPT_ERROR_NUMBER,
1315 /* otherwise get the result; if it is not
1316 * LDAP_SUCCESS, record it in the reply
1317 * structure (this includes
1318 * LDAP_COMPARE_{TRUE|FALSE}) */
1320 rc = ldap_parse_result( lc->lc_ld, res, &rs->sr_err,
1321 &match, &text, &refs, &ctrls, 1 );
1323 if ( rc != LDAP_SUCCESS ) {
1326 if ( refs != NULL ) {
1329 for ( i = 0; refs[ i ] != NULL; i++ )
1331 rs->sr_ref = op->o_tmpalloc( sizeof( struct berval ) * ( i + 1 ),
1333 for ( i = 0; refs[ i ] != NULL; i++ ) {
1334 ber_str2bv( refs[ i ], 0, 0, &rs->sr_ref[ i ] );
1336 BER_BVZERO( &rs->sr_ref[ i ] );
1338 if ( ctrls != NULL ) {
1339 rs->sr_ctrls = ctrls;
1344 /* if the error in the reply structure is not
1345 * LDAP_SUCCESS, try to map it from client
1346 * to server error */
1347 if ( !ERR_OK( rs->sr_err ) ) {
1348 rs->sr_err = slap_map_api2result( rs );
1350 /* internal ops ( op->o_conn == NULL )
1351 * must not reply to client */
1352 if ( op->o_conn && !op->o_do_not_cache && match ) {
1354 /* record the (massaged) matched
1355 * DN into the reply structure */
1356 rs->sr_matched = match;
1359 if ( LDAP_BACK_QUARANTINE( li ) ) {
1360 ldap_back_quarantine( op, rs, 1 );
1363 ( ( sendok & LDAP_BACK_SENDOK )
1364 || ( ( sendok & LDAP_BACK_SENDERR ) && rs->sr_err != LDAP_SUCCESS ) ) )
1366 send_ldap_result( op, rs );
1369 if ( rs->sr_matched != match ) {
1370 free( (char *)rs->sr_matched );
1372 rs->sr_matched = NULL;
1373 ldap_memfree( match );
1376 ldap_memfree( text );
1380 assert( refs != NULL );
1381 ber_memvfree( (void **)refs );
1382 op->o_tmpfree( rs->sr_ref, op->o_tmpmemctx );
1386 assert( rs->sr_ctrls != NULL );
1387 ldap_controls_free( ctrls );
1388 rs->sr_ctrls = NULL;
1390 return( ERR_OK( rs->sr_err ) ? LDAP_SUCCESS : rs->sr_err );
1393 /* return true if bound, false if failed */
1395 ldap_back_retry( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
1398 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1400 assert( lcp != NULL );
1401 assert( *lcp != NULL );
1403 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1405 if ( (*lcp)->lc_refcnt == 1 ) {
1406 ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
1407 Debug( LDAP_DEBUG_ANY,
1408 "%s ldap_back_retry: retrying URI=\"%s\" DN=\"%s\"\n",
1409 op->o_log_prefix, li->li_uri,
1410 BER_BVISNULL( &(*lcp)->lc_bound_ndn ) ?
1411 "" : (*lcp)->lc_bound_ndn.bv_val );
1412 ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
1414 ldap_unbind_ext( (*lcp)->lc_ld, NULL, NULL );
1415 (*lcp)->lc_ld = NULL;
1416 LDAP_BACK_CONN_ISBOUND_CLEAR( (*lcp) );
1418 /* lc here must be the regular lc, reset and ready for init */
1419 rc = ldap_back_prepare_conn( lcp, op, rs, sendok );
1420 if ( rc != LDAP_SUCCESS ) {
1422 /* freeit, because lc_refcnt == 1 */
1423 (void)ldap_back_conn_free( *lcp );
1427 rc = ldap_back_dobind_int( *lcp, op, rs, sendok, 0, 0 );
1428 if ( rc == 0 && *lcp != NULL ) {
1429 /* freeit, because lc_refcnt == 1 */
1430 (void)ldap_back_conn_free( *lcp );
1436 Debug( LDAP_DEBUG_TRACE,
1437 "ldap_back_retry: conn %p refcnt=%u unable to retry.\n",
1438 (void *)(*lcp), (*lcp)->lc_refcnt, 0 );
1440 ldap_back_release_conn_lock( op, rs, *lcp, 0 );
1444 rs->sr_err = LDAP_UNAVAILABLE;
1445 rs->sr_text = "unable to retry";
1446 send_ldap_result( op, rs );
1450 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1456 ldap_back_proxy_authz_bind( ldapconn_t *lc, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
1458 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1459 struct berval binddn = slap_empty_bv;
1460 struct berval bindcred = slap_empty_bv;
1466 /* don't proxyAuthz if protocol is not LDAPv3 */
1467 switch ( li->li_version ) {
1472 if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
1481 if ( op->o_tag == LDAP_REQ_BIND ) {
1482 ndn = op->o_req_ndn;
1484 } else if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
1485 ndn = op->o_conn->c_ndn;
1492 * FIXME: we need to let clients use proxyAuthz
1493 * otherwise we cannot do symmetric pools of servers;
1494 * we have to live with the fact that a user can
1495 * authorize itself as any ID that is allowed
1496 * by the authzTo directive of the "proxyauthzdn".
1499 * NOTE: current Proxy Authorization specification
1500 * and implementation do not allow proxy authorization
1501 * control to be provided with Bind requests
1504 * if no bind took place yet, but the connection is bound
1505 * and the "proxyauthzdn" is set, then bind as
1506 * "proxyauthzdn" and explicitly add the proxyAuthz
1507 * control to every operation with the dn bound
1508 * to the connection as control value.
1511 /* bind as proxyauthzdn only if no idassert mode
1512 * is requested, or if the client's identity
1514 switch ( li->li_idassert_mode ) {
1515 case LDAP_BACK_IDASSERT_LEGACY:
1516 if ( !BER_BVISNULL( &ndn ) && !BER_BVISEMPTY( &ndn ) ) {
1517 if ( !BER_BVISNULL( &li->li_idassert_authcDN ) && !BER_BVISEMPTY( &li->li_idassert_authcDN ) )
1519 binddn = li->li_idassert_authcDN;
1520 bindcred = li->li_idassert_passwd;
1527 /* NOTE: rootdn can always idassert */
1528 if ( BER_BVISNULL( &ndn ) && li->li_idassert_authz == NULL ) {
1529 if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
1530 rs->sr_err = LDAP_INAPPROPRIATE_AUTH;
1531 if ( sendok & LDAP_BACK_SENDERR ) {
1532 send_ldap_result( op, rs );
1534 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1537 rs->sr_err = LDAP_SUCCESS;
1538 binddn = slap_empty_bv;
1539 bindcred = slap_empty_bv;
1545 } else if ( li->li_idassert_authz && !be_isroot( op ) ) {
1546 struct berval authcDN;
1548 if ( BER_BVISNULL( &ndn ) ) {
1549 authcDN = slap_empty_bv;
1554 rs->sr_err = slap_sasl_matches( op, li->li_idassert_authz,
1555 &authcDN, &authcDN );
1556 if ( rs->sr_err != LDAP_SUCCESS ) {
1557 if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
1558 if ( sendok & LDAP_BACK_SENDERR ) {
1559 send_ldap_result( op, rs );
1561 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1564 rs->sr_err = LDAP_SUCCESS;
1565 binddn = slap_empty_bv;
1566 bindcred = slap_empty_bv;
1574 binddn = li->li_idassert_authcDN;
1575 bindcred = li->li_idassert_passwd;
1580 if ( dobind && li->li_idassert_authmethod == LDAP_AUTH_SASL ) {
1581 #ifdef HAVE_CYRUS_SASL
1582 void *defaults = NULL;
1583 struct berval authzID = BER_BVNULL;
1586 /* if SASL supports native authz, prepare for it */
1587 if ( ( !op->o_do_not_cache || !op->o_is_auth_check ) &&
1588 ( li->li_idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) )
1590 switch ( li->li_idassert_mode ) {
1591 case LDAP_BACK_IDASSERT_OTHERID:
1592 case LDAP_BACK_IDASSERT_OTHERDN:
1593 authzID = li->li_idassert_authzID;
1596 case LDAP_BACK_IDASSERT_ANONYMOUS:
1597 BER_BVSTR( &authzID, "dn:" );
1600 case LDAP_BACK_IDASSERT_SELF:
1601 if ( BER_BVISNULL( &ndn ) ) {
1602 /* connection is not authc'd, so don't idassert */
1603 BER_BVSTR( &authzID, "dn:" );
1606 authzID.bv_len = STRLENOF( "dn:" ) + ndn.bv_len;
1607 authzID.bv_val = slap_sl_malloc( authzID.bv_len + 1, op->o_tmpmemctx );
1608 AC_MEMCPY( authzID.bv_val, "dn:", STRLENOF( "dn:" ) );
1609 AC_MEMCPY( authzID.bv_val + STRLENOF( "dn:" ),
1610 ndn.bv_val, ndn.bv_len + 1 );
1619 if ( li->li_idassert_secprops != NULL ) {
1620 rs->sr_err = ldap_set_option( lc->lc_ld,
1621 LDAP_OPT_X_SASL_SECPROPS,
1622 (void *)li->li_idassert_secprops );
1624 if ( rs->sr_err != LDAP_OPT_SUCCESS ) {
1625 rs->sr_err = LDAP_OTHER;
1626 if ( sendok & LDAP_BACK_SENDERR ) {
1627 send_ldap_result( op, rs );
1629 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1634 defaults = lutil_sasl_defaults( lc->lc_ld,
1635 li->li_idassert_sasl_mech.bv_val,
1636 li->li_idassert_sasl_realm.bv_val,
1637 li->li_idassert_authcID.bv_val,
1638 li->li_idassert_passwd.bv_val,
1641 rs->sr_err = ldap_sasl_interactive_bind_s( lc->lc_ld, binddn.bv_val,
1642 li->li_idassert_sasl_mech.bv_val, NULL, NULL,
1643 LDAP_SASL_QUIET, lutil_sasl_interact,
1646 rs->sr_err = slap_map_api2result( rs );
1647 if ( rs->sr_err != LDAP_SUCCESS ) {
1648 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1649 if ( sendok & LDAP_BACK_SENDERR ) {
1650 send_ldap_result( op, rs );
1654 LDAP_BACK_CONN_ISBOUND_SET( lc );
1657 lutil_sasl_freedefs( defaults );
1659 slap_sl_free( authzID.bv_val, op->o_tmpmemctx );
1663 #endif /* HAVE_CYRUS_SASL */
1666 switch ( li->li_idassert_authmethod ) {
1667 case LDAP_AUTH_NONE:
1671 case LDAP_AUTH_SIMPLE:
1672 rs->sr_err = ldap_sasl_bind( lc->lc_ld,
1673 binddn.bv_val, LDAP_SASL_SIMPLE,
1674 &bindcred, NULL, NULL, &msgid );
1675 rc = ldap_back_op_result( lc, op, rs, msgid, 0, sendok );
1680 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1681 rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
1682 if ( sendok & LDAP_BACK_SENDERR ) {
1683 send_ldap_result( op, rs );
1688 if ( rc == LDAP_SUCCESS ) {
1689 /* set rebind stuff in case of successful proxyAuthz bind,
1690 * so that referral chasing is attempted using the right
1692 LDAP_BACK_CONN_ISBOUND_SET( lc );
1693 ber_dupbv( &lc->lc_bound_ndn, &binddn );
1695 if ( LDAP_BACK_SAVECRED( li ) ) {
1696 if ( !BER_BVISNULL( &lc->lc_cred ) ) {
1697 memset( lc->lc_cred.bv_val, 0,
1698 lc->lc_cred.bv_len );
1700 ber_bvreplace( &lc->lc_cred, &bindcred );
1701 ldap_set_rebind_proc( lc->lc_ld, li->li_rebind_f, lc );
1705 return LDAP_BACK_CONN_ISBOUND( lc );
1709 * ldap_back_proxy_authz_ctrl() prepends a proxyAuthz control
1710 * to existing server-side controls if required; if not,
1711 * the existing server-side controls are placed in *pctrls.
1712 * The caller, after using the controls in client API
1713 * operations, if ( *pctrls != op->o_ctrls ), should
1714 * free( (*pctrls)[ 0 ] ) and free( *pctrls ).
1715 * The function returns success if the control could
1716 * be added if required, or if it did nothing; in the future,
1717 * it might return some error if it failed.
1719 * if no bind took place yet, but the connection is bound
1720 * and the "proxyauthzdn" is set, then bind as "proxyauthzdn"
1721 * and explicitly add proxyAuthz the control to every operation
1722 * with the dn bound to the connection as control value.
1724 * If no server-side controls are defined for the operation,
1725 * simply add the proxyAuthz control; otherwise, if the
1726 * proxyAuthz control is not already set, add it as
1729 * FIXME: is controls order significant for security?
1730 * ANSWER: controls ordering and interoperability
1731 * must be indicated by the specs of each control; if none
1732 * is specified, the order is irrelevant.
1735 ldap_back_proxy_authz_ctrl(
1739 LDAPControl ***pctrls )
1741 ldapinfo_t *li = (ldapinfo_t *) op->o_bd->be_private;
1742 LDAPControl **ctrls = NULL;
1745 struct berval assertedID,
1750 rs->sr_err = LDAP_SUCCESS;
1752 /* don't proxyAuthz if protocol is not LDAPv3 */
1753 switch ( li->li_version ) {
1758 if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
1767 /* FIXME: SASL/EXTERNAL over ldapi:// doesn't honor the authcID,
1768 * but if it is not set this test fails. We need a different
1769 * means to detect if idassert is enabled */
1770 if ( ( BER_BVISNULL( &li->li_idassert_authcID ) || BER_BVISEMPTY( &li->li_idassert_authcID ) )
1771 && ( BER_BVISNULL( &li->li_idassert_authcDN ) || BER_BVISEMPTY( &li->li_idassert_authcDN ) ) )
1776 if ( !op->o_conn || op->o_do_not_cache || be_isroot( op ) ) {
1780 if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
1781 ndn = op->o_conn->c_ndn;
1787 if ( li->li_idassert_mode == LDAP_BACK_IDASSERT_LEGACY ) {
1788 if ( op->o_proxy_authz ) {
1790 * FIXME: we do not want to perform proxyAuthz
1791 * on behalf of the client, because this would
1792 * be performed with "proxyauthzdn" privileges.
1794 * This might actually be too strict, since
1795 * the "proxyauthzdn" authzTo, and each entry's
1796 * authzFrom attributes may be crafted
1797 * to avoid unwanted proxyAuthz to take place.
1800 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1801 rs->sr_text = "proxyAuthz not allowed within namingContext";
1806 if ( !BER_BVISNULL( &lc->lc_bound_ndn ) ) {
1810 if ( BER_BVISNULL( &ndn ) ) {
1814 if ( BER_BVISNULL( &li->li_idassert_authcDN ) ) {
1818 } else if ( li->li_idassert_authmethod == LDAP_AUTH_SASL ) {
1819 if ( ( li->li_idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ )
1820 /* && ( !BER_BVISNULL( &ndn )
1821 || LDAP_BACK_CONN_ISBOUND( lc ) ) */ )
1823 /* already asserted in SASL via native authz */
1824 /* NOTE: the test on lc->lc_bound is used to trap
1825 * native authorization of anonymous users,
1826 * since in that case ndn is NULL */
1830 } else if ( li->li_idassert_authz && !be_isroot( op ) ) {
1832 struct berval authcDN;
1834 if ( BER_BVISNULL( &ndn ) ) {
1835 authcDN = slap_empty_bv;
1839 rc = slap_sasl_matches( op, li->li_idassert_authz,
1840 &authcDN, & authcDN );
1841 if ( rc != LDAP_SUCCESS ) {
1842 if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE )
1844 /* ndn is not authorized
1845 * to use idassert */
1852 if ( op->o_proxy_authz ) {
1855 * 1) ignore the already set proxyAuthz control
1856 * 2) leave it in place, and don't set ours
1858 * 4) reject the operation
1860 * option (4) is very drastic
1861 * option (3) will make the remote server reject
1862 * the operation, thus being equivalent to (4)
1863 * option (2) will likely break the idassert
1864 * assumptions, so we cannot accept it;
1865 * option (1) means that we are contradicting
1866 * the client's reques.
1868 * I think (4) is the only correct choice.
1870 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1871 rs->sr_text = "proxyAuthz not allowed within namingContext";
1874 if ( op->o_is_auth_check ) {
1875 mode = LDAP_BACK_IDASSERT_NOASSERT;
1878 mode = li->li_idassert_mode;
1882 case LDAP_BACK_IDASSERT_SELF:
1883 if ( BER_BVISNULL( &ndn ) ) {
1889 case LDAP_BACK_IDASSERT_LEGACY:
1890 /* original behavior:
1891 * assert the client's identity */
1892 if ( BER_BVISNULL( &ndn ) ) {
1893 assertedID = slap_empty_bv;
1899 case LDAP_BACK_IDASSERT_ANONYMOUS:
1900 /* assert "anonymous" */
1901 assertedID = slap_empty_bv;
1904 case LDAP_BACK_IDASSERT_NOASSERT:
1905 /* don't assert; bind as proxyauthzdn */
1908 case LDAP_BACK_IDASSERT_OTHERID:
1909 case LDAP_BACK_IDASSERT_OTHERDN:
1910 /* assert idassert DN */
1911 assertedID = li->li_idassert_authzID;
1918 if ( BER_BVISNULL( &assertedID ) ) {
1919 assertedID = slap_empty_bv;
1922 /* don't idassert the bound DN (ITS#4497) */
1923 if ( dn_match( &assertedID, &lc->lc_bound_ndn ) ) {
1927 if ( op->o_ctrls ) {
1928 for ( i = 0; op->o_ctrls[ i ]; i++ )
1929 /* just count ctrls */ ;
1932 ctrls = op->o_tmpalloc( sizeof( LDAPControl * ) * (i + 2) + sizeof( LDAPControl ),
1934 ctrls[ 0 ] = (LDAPControl *)&ctrls[ i + 2 ];
1936 ctrls[ 0 ]->ldctl_oid = LDAP_CONTROL_PROXY_AUTHZ;
1937 ctrls[ 0 ]->ldctl_iscritical = 1;
1939 switch ( li->li_idassert_mode ) {
1940 /* already in u:ID or dn:DN form */
1941 case LDAP_BACK_IDASSERT_OTHERID:
1942 case LDAP_BACK_IDASSERT_OTHERDN:
1943 ber_dupbv_x( &ctrls[ 0 ]->ldctl_value, &assertedID, op->o_tmpmemctx );
1946 /* needs the dn: prefix */
1948 ctrls[ 0 ]->ldctl_value.bv_len = assertedID.bv_len + STRLENOF( "dn:" );
1949 ctrls[ 0 ]->ldctl_value.bv_val = op->o_tmpalloc( ctrls[ 0 ]->ldctl_value.bv_len + 1,
1951 AC_MEMCPY( ctrls[ 0 ]->ldctl_value.bv_val, "dn:", STRLENOF( "dn:" ) );
1952 AC_MEMCPY( &ctrls[ 0 ]->ldctl_value.bv_val[ STRLENOF( "dn:" ) ],
1953 assertedID.bv_val, assertedID.bv_len + 1 );
1957 /* Older versions of <draft-weltman-ldapv3-proxy> required
1958 * to encode the value of the authzID (and called it proxyDN);
1959 * this hack provides compatibility with those DSAs that
1960 * implement it this way */
1961 if ( li->li_idassert_flags & LDAP_BACK_AUTH_OBSOLETE_ENCODING_WORKAROUND ) {
1962 struct berval authzID = ctrls[ 0 ]->ldctl_value;
1963 BerElementBuffer berbuf;
1964 BerElement *ber = (BerElement *)&berbuf;
1967 ber_init2( ber, 0, LBER_USE_DER );
1968 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1970 tag = ber_printf( ber, "O", &authzID );
1971 if ( tag == LBER_ERROR ) {
1972 rs->sr_err = LDAP_OTHER;
1976 if ( ber_flatten2( ber, &ctrls[ 0 ]->ldctl_value, 1 ) == -1 ) {
1977 rs->sr_err = LDAP_OTHER;
1982 op->o_tmpfree( authzID.bv_val, op->o_tmpmemctx );
1983 ber_free_buf( ber );
1985 if ( rs->sr_err != LDAP_SUCCESS ) {
1986 op->o_tmpfree( ctrls, op->o_tmpmemctx );
1991 } else if ( li->li_idassert_flags & LDAP_BACK_AUTH_OBSOLETE_PROXY_AUTHZ ) {
1992 struct berval authzID = ctrls[ 0 ]->ldctl_value,
1994 BerElementBuffer berbuf;
1995 BerElement *ber = (BerElement *)&berbuf;
1998 if ( strncasecmp( authzID.bv_val, "dn:", STRLENOF( "dn:" ) ) != 0 ) {
1999 op->o_tmpfree( ctrls[ 0 ]->ldctl_value.bv_val, op->o_tmpmemctx );
2000 op->o_tmpfree( ctrls, op->o_tmpmemctx );
2002 rs->sr_err = LDAP_PROTOCOL_ERROR;
2007 tmp.bv_val += STRLENOF( "dn:" );
2008 tmp.bv_len -= STRLENOF( "dn:" );
2010 ber_init2( ber, 0, LBER_USE_DER );
2011 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
2013 /* apparently, Mozilla API encodes this
2014 * as "SEQUENCE { LDAPDN }" */
2015 tag = ber_printf( ber, "{O}", &tmp );
2016 if ( tag == LBER_ERROR ) {
2017 rs->sr_err = LDAP_OTHER;
2021 if ( ber_flatten2( ber, &ctrls[ 0 ]->ldctl_value, 1 ) == -1 ) {
2022 rs->sr_err = LDAP_OTHER;
2027 op->o_tmpfree( authzID.bv_val, op->o_tmpmemctx );
2028 ber_free_buf( ber );
2030 if ( rs->sr_err != LDAP_SUCCESS ) {
2031 op->o_tmpfree( ctrls, op->o_tmpmemctx );
2036 ctrls[ 0 ]->ldctl_oid = LDAP_CONTROL_OBSOLETE_PROXY_AUTHZ;
2039 if ( op->o_ctrls ) {
2040 for ( i = 0; op->o_ctrls[ i ]; i++ ) {
2041 ctrls[ i + 1 ] = op->o_ctrls[ i ];
2044 ctrls[ i + 1 ] = NULL;
2047 if ( ctrls == NULL ) {
2048 ctrls = op->o_ctrls;
2057 ldap_back_proxy_authz_ctrl_free( Operation *op, LDAPControl ***pctrls )
2059 LDAPControl **ctrls = *pctrls;
2061 /* we assume that the first control is the proxyAuthz
2062 * added by back-ldap, so it's the only one we explicitly
2064 if ( ctrls && ctrls != op->o_ctrls ) {
2065 assert( ctrls[ 0 ] != NULL );
2067 if ( !BER_BVISNULL( &ctrls[ 0 ]->ldctl_value ) ) {
2068 op->o_tmpfree( ctrls[ 0 ]->ldctl_value.bv_val, op->o_tmpmemctx );
2071 op->o_tmpfree( ctrls, op->o_tmpmemctx );