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,
121 li->li_timeout[ SLAP_OP_BIND ],
122 LDAP_BACK_BIND_SERR );
123 if ( rc == LDAP_SUCCESS ) {
124 /* If defined, proxyAuthz will be used also when
125 * back-ldap is the authorizing backend; for this
126 * purpose, after a successful bind the connection
127 * is trashed and further operations will use
128 * a default connections with identity assertion */
129 /* NOTE: use with care */
130 if ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) {
131 LDAP_BACK_CONN_TAINTED_SET( lc );
132 ldap_back_release_conn( op, rs, lc );
137 /* rebind is now done inside ldap_back_proxy_authz_bind()
138 * in case of success */
139 LDAP_BACK_CONN_ISBOUND_SET( lc );
140 ber_dupbv( &lc->lc_bound_ndn, &op->o_req_ndn );
142 if ( LDAP_BACK_SAVECRED( li ) ) {
143 if ( !BER_BVISNULL( &lc->lc_cred ) ) {
144 memset( lc->lc_cred.bv_val, 0,
145 lc->lc_cred.bv_len );
147 ber_bvreplace( &lc->lc_cred, &op->orb_cred );
148 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 ( tmplc->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 time_t lc_time = (time_t)(-1);
508 #endif /* HAVE_TLS */
510 assert( lcp != NULL );
512 ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
513 rs->sr_err = ldap_initialize( &ld, li->li_uri );
514 ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
515 if ( rs->sr_err != LDAP_SUCCESS ) {
519 if ( li->li_urllist_f ) {
520 ldap_set_urllist_proc( ld, li->li_urllist_f, li->li_urllist_p );
523 /* Set LDAP version. This will always succeed: If the client
524 * bound with a particular version, then so can we.
526 if ( li->li_version != 0 ) {
527 version = li->li_version;
529 } else if ( op->o_protocol != 0 ) {
530 version = op->o_protocol;
533 /* assume it's an internal op; set to LDAPv3 */
534 version = LDAP_VERSION3;
536 ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION, (const void *)&version );
538 /* automatically chase referrals ("chase-referrals [{yes|no}]" statement) */
539 ldap_set_option( ld, LDAP_OPT_REFERRALS,
540 LDAP_BACK_CHASE_REFERRALS( li ) ? LDAP_OPT_ON : LDAP_OPT_OFF );
542 if ( li->li_network_timeout > 0 ) {
545 tv.tv_sec = li->li_network_timeout;
547 ldap_set_option( ld, LDAP_OPT_NETWORK_TIMEOUT, (const void *)&tv );
551 ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
552 rs->sr_err = ldap_back_start_tls( ld, op->o_protocol, &is_tls,
553 li->li_uri, li->li_flags, li->li_nretries, &rs->sr_text );
554 ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
555 if ( rs->sr_err != LDAP_SUCCESS ) {
556 ldap_unbind_ext( ld, NULL, NULL );
559 } else if ( li->li_idle_timeout ) {
560 /* only touch when activity actually took place... */
561 lc_time = op->o_time;
563 #endif /* HAVE_TLS */
565 if ( *lcp == NULL ) {
566 *lcp = (ldapconn_t *)ch_calloc( 1, sizeof( ldapconn_t ) );
567 (*lcp)->lc_flags = li->li_flags;
570 (*lcp)->lc_refcnt = 1;
571 (*lcp)->lc_binding = 1;
574 LDAP_BACK_CONN_ISTLS_SET( *lcp );
576 LDAP_BACK_CONN_ISTLS_CLEAR( *lcp );
578 if ( lc_time != (time_t)(-1) ) {
579 (*lcp)->lc_time = lc_time;
581 #endif /* HAVE_TLS */
584 if ( rs->sr_err != LDAP_SUCCESS ) {
585 rs->sr_err = slap_map_api2result( rs );
586 if ( sendok & LDAP_BACK_SENDERR ) {
587 if ( rs->sr_text == NULL ) {
588 rs->sr_text = "ldap_initialize() failed";
590 send_ldap_result( op, rs );
595 if ( li->li_conn_ttl > 0 ) {
596 (*lcp)->lc_create_time = op->o_time;
604 ldap_back_getconn( Operation *op, SlapReply *rs, ldap_back_send_t sendok )
606 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
607 ldapconn_t *lc = NULL,
609 int refcnt = 1, binding = 1;
611 /* if the server is quarantined, and
612 * - the current interval did not expire yet, or
613 * - no more retries should occur,
614 * don't return the connection */
615 if ( li->li_isquarantined ) {
616 slap_retry_info_t *ri = &li->li_quarantine;
619 ldap_pvt_thread_mutex_lock( &li->li_quarantine_mutex );
620 if ( li->li_isquarantined == LDAP_BACK_FQ_YES ) {
621 dont_retry = ( ri->ri_num[ ri->ri_idx ] == SLAP_RETRYNUM_TAIL
622 || slap_get_time() < ri->ri_last + ri->ri_interval[ ri->ri_idx ] );
624 Debug( LDAP_DEBUG_ANY,
625 "%s: ldap_back_getconn quarantine "
626 "retry block #%d try #%d.\n",
627 op->o_log_prefix, ri->ri_idx, ri->ri_count );
628 li->li_isquarantined = LDAP_BACK_FQ_RETRYING;
631 ldap_pvt_thread_mutex_unlock( &li->li_quarantine_mutex );
634 rs->sr_err = LDAP_UNAVAILABLE;
635 if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
636 send_ldap_result( op, rs );
642 /* Internal searches are privileged and shared. So is root. */
643 if ( op->o_do_not_cache || be_isroot( op ) ) {
644 LDAP_BACK_CONN_ISPRIV_SET( &lc_curr );
645 lc_curr.lc_local_ndn = op->o_bd->be_rootndn;
646 lc_curr.lc_conn = LDAP_BACK_PCONN_SET( op );
649 lc_curr.lc_local_ndn = op->o_ndn;
650 /* Explicit binds must not be shared */
651 if ( op->o_tag == LDAP_REQ_BIND || SLAP_IS_AUTHZ_BACKEND( op ) ) {
652 lc_curr.lc_conn = op->o_conn;
655 lc_curr.lc_conn = LDAP_BACK_PCONN_SET( op );
659 /* Explicit Bind requests always get their own conn */
660 if ( !( sendok & LDAP_BACK_BINDING ) ) {
661 /* Searches for a ldapconn in the avl tree */
663 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
665 lc = (ldapconn_t *)avl_find( li->li_conninfo.lai_tree,
666 (caddr_t)&lc_curr, ldap_back_conndn_cmp );
668 /* Don't reuse connections while they're still binding */
669 if ( LDAP_BACK_CONN_BINDING( lc ) ) {
670 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
671 ldap_pvt_thread_yield();
675 refcnt = ++lc->lc_refcnt;
676 binding = ++lc->lc_binding;
678 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
681 /* Looks like we didn't get a bind. Open a new session... */
683 if ( ldap_back_prepare_conn( &lc, op, rs, sendok ) != LDAP_SUCCESS ) {
686 if ( sendok & LDAP_BACK_BINDING ) {
687 LDAP_BACK_CONN_BINDING_SET( lc );
689 lc->lc_conn = lc_curr.lc_conn;
690 ber_dupbv( &lc->lc_local_ndn, &lc_curr.lc_local_ndn );
692 if ( LDAP_BACK_CONN_ISPRIV( &lc_curr ) ) {
693 ber_dupbv( &lc->lc_cred, &li->li_acl_passwd );
694 ber_dupbv( &lc->lc_bound_ndn, &li->li_acl_authcDN );
695 LDAP_BACK_CONN_ISPRIV_SET( lc );
698 BER_BVZERO( &lc->lc_cred );
699 BER_BVZERO( &lc->lc_bound_ndn );
700 if ( !BER_BVISEMPTY( &op->o_ndn )
701 && SLAP_IS_AUTHZ_BACKEND( op ) )
703 ber_dupbv( &lc->lc_bound_ndn, &op->o_ndn );
708 /* if start TLS failed but it was not mandatory,
709 * check if the non-TLS connection was already
710 * in cache; in case, destroy the newly created
711 * connection and use the existing one */
712 if ( lc->lc_conn == LDAP_BACK_PCONN_TLS
713 && !ldap_tls_inplace( lc->lc_ld ) )
717 lc_curr.lc_conn = LDAP_BACK_PCONN;
718 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
719 tmplc = (ldapconn_t *)avl_find( li->li_conninfo.lai_tree,
720 (caddr_t)&lc_curr, ldap_back_conndn_cmp );
721 if ( tmplc != NULL ) {
722 refcnt = ++tmplc->lc_refcnt;
723 binding = ++tmplc->lc_binding;
724 ldap_back_conn_free( lc );
727 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
729 if ( tmplc != NULL ) {
733 #endif /* HAVE_TLS */
735 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
737 /* Inserts the newly created ldapconn in the avl tree */
738 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
740 assert( lc->lc_refcnt == 1 );
741 assert( lc->lc_binding == 1 );
742 rs->sr_err = avl_insert( &li->li_conninfo.lai_tree, (caddr_t)lc,
743 ldap_back_conndn_cmp, ldap_back_conndn_dup );
745 #if PRINT_CONNTREE > 0
746 myprint( li->li_conninfo.lai_tree, "ldap_back_getconn" );
747 #endif /* PRINT_CONNTREE */
749 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
751 Debug( LDAP_DEBUG_TRACE,
752 "=>ldap_back_getconn: conn %p inserted refcnt=%u binding=%u\n",
753 (void *)lc, refcnt, binding );
755 /* Err could be -1 in case a duplicate ldapconn is inserted */
756 switch ( rs->sr_err ) {
761 if ( !( sendok & LDAP_BACK_BINDING ) ) {
762 /* duplicate: free and try to get the newly created one */
765 /* taint connection, so that it'll be freed when released */
766 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
767 (void *)avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
768 ldap_back_conndnlc_cmp );
769 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
770 LDAP_BACK_CONN_TAINTED_SET( lc );
774 ldap_back_conn_free( lc );
775 rs->sr_err = LDAP_OTHER;
776 rs->sr_text = "proxy bind collision";
777 if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
778 send_ldap_result( op, rs );
787 if ( ( li->li_idle_timeout != 0 && op->o_time > lc->lc_time + li->li_idle_timeout )
788 || ( li->li_conn_ttl != 0 && op->o_time > lc->lc_create_time + li->li_conn_ttl ) )
792 /* let it be used, but taint/delete it so that
793 * no-one else can look it up any further */
794 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
795 (void *)avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
796 ldap_back_conndnlc_cmp );
797 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
798 LDAP_BACK_CONN_TAINTED_SET( lc );
801 if ( LogTest( LDAP_DEBUG_TRACE ) ) {
802 char buf[ SLAP_TEXT_BUFLEN ];
804 snprintf( buf, sizeof( buf ),
805 "conn %p fetched refcnt=%u binding=%u%s",
806 (void *)lc, refcnt, binding, expiring ? " expiring" : "" );
807 Debug( LDAP_DEBUG_TRACE,
808 "=>ldap_back_getconn: %s.\n", buf, 0, 0 );
814 #endif /* HAVE_TLS */
820 ldap_back_release_conn_lock(
826 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
828 ldapconn_t *lc = *lcp;
831 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
833 assert( lc->lc_refcnt > 0 );
834 LDAP_BACK_CONN_BINDING_CLEAR( lc );
836 if ( LDAP_BACK_CONN_TAINTED( lc ) ) {
837 ldap_back_freeconn( op, lc, 0 );
841 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
846 ldap_back_quarantine(
850 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
852 slap_retry_info_t *ri = &li->li_quarantine;
854 ldap_pvt_thread_mutex_lock( &li->li_quarantine_mutex );
856 if ( rs->sr_err == LDAP_UNAVAILABLE ) {
857 time_t new_last = slap_get_time();
859 switch ( li->li_isquarantined ) {
860 case LDAP_BACK_FQ_NO:
861 if ( ri->ri_last == new_last ) {
865 Debug( LDAP_DEBUG_ANY,
866 "%s: ldap_back_quarantine enter.\n",
867 op->o_log_prefix, 0, 0 );
873 case LDAP_BACK_FQ_RETRYING:
874 Debug( LDAP_DEBUG_ANY,
875 "%s: ldap_back_quarantine block #%d try #%d failed.\n",
876 op->o_log_prefix, ri->ri_idx, ri->ri_count );
879 if ( ri->ri_num[ ri->ri_idx ] != SLAP_RETRYNUM_FOREVER
880 && ri->ri_count == ri->ri_num[ ri->ri_idx ] )
891 li->li_isquarantined = LDAP_BACK_FQ_YES;
892 ri->ri_last = new_last;
894 } else if ( li->li_isquarantined != LDAP_BACK_FQ_NO ) {
895 Debug( LDAP_DEBUG_ANY,
896 "%s: ldap_back_quarantine exit.\n",
897 op->o_log_prefix, ri->ri_idx, ri->ri_count );
899 if ( li->li_quarantine_f ) {
900 (void)li->li_quarantine_f( li, li->li_quarantine_p );
905 li->li_isquarantined = LDAP_BACK_FQ_NO;
909 ldap_pvt_thread_mutex_unlock( &li->li_quarantine_mutex );
915 * Note: as the check for the value of lc->lc_bound was already here, I removed
916 * it from all the callers, and I made the function return the flag, so
917 * it can be used to simplify the check.
919 * Note: dolock indicates whether li->li_conninfo.lai_mutex must be locked or not
922 ldap_back_dobind_int(
926 ldap_back_send_t sendok,
930 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
932 ldapconn_t *lc = *lcp;
939 assert( retries >= 0 );
943 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
946 if ( binding == 0 ) {
947 /* check if already bound */
948 rc = isbound = LDAP_BACK_CONN_ISBOUND( lc );
952 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
957 if ( LDAP_BACK_CONN_BINDING( lc ) ) {
958 /* if someone else is about to bind it, give up and retry */
960 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
962 ldap_pvt_thread_yield();
966 /* otherwise this thread will bind it */
967 LDAP_BACK_CONN_BINDING_SET( lc );
972 /* wait for pending operations to finish */
973 /* FIXME: may become a bottleneck! */
974 if ( lc->lc_refcnt != lc->lc_binding ) {
976 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
978 ldap_pvt_thread_yield();
983 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
987 * FIXME: we need to let clients use proxyAuthz
988 * otherwise we cannot do symmetric pools of servers;
989 * we have to live with the fact that a user can
990 * authorize itself as any ID that is allowed
991 * by the authzTo directive of the "proxyauthzdn".
994 * NOTE: current Proxy Authorization specification
995 * and implementation do not allow proxy authorization
996 * control to be provided with Bind requests
999 * if no bind took place yet, but the connection is bound
1000 * and the "idassert-authcDN" (or other ID) is set,
1001 * then bind as the asserting identity and explicitly
1002 * add the proxyAuthz control to every operation with the
1003 * dn bound to the connection as control value.
1004 * This is done also if this is the authrizing backend,
1005 * but the "override" flag is given to idassert.
1006 * It allows to use SASL bind and yet proxyAuthz users
1008 if ( op->o_conn != NULL && !op->o_do_not_cache &&
1009 ( !LDAP_BACK_CONN_ISPRIV( lc ) ||
1010 LDAP_BACK_CONN_ISIDASSERT( lc ) ||
1011 BER_BVISEMPTY( &lc->lc_bound_ndn ) ) &&
1012 ( !isbound || ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) ) )
1014 (void)ldap_back_proxy_authz_bind( lc, op, rs, sendok );
1018 #ifdef HAVE_CYRUS_SASL
1019 if ( LDAP_BACK_CONN_ISPRIV( lc )
1020 && li->li_acl_authmethod == LDAP_AUTH_SASL )
1022 void *defaults = NULL;
1024 if ( li->li_acl_secprops != NULL ) {
1025 rc = ldap_set_option( lc->lc_ld,
1026 LDAP_OPT_X_SASL_SECPROPS, li->li_acl_secprops );
1028 if ( rc != LDAP_OPT_SUCCESS ) {
1029 Debug( LDAP_DEBUG_ANY, "Error: ldap_set_option "
1030 "(SECPROPS,\"%s\") failed!\n",
1031 li->li_acl_secprops, 0, 0 );
1036 defaults = lutil_sasl_defaults( lc->lc_ld,
1037 li->li_acl_sasl_mech.bv_val,
1038 li->li_acl_sasl_realm.bv_val,
1039 li->li_acl_authcID.bv_val,
1040 li->li_acl_passwd.bv_val,
1043 rs->sr_err = ldap_sasl_interactive_bind_s( lc->lc_ld,
1044 li->li_acl_authcDN.bv_val,
1045 li->li_acl_sasl_mech.bv_val, NULL, NULL,
1046 LDAP_SASL_QUIET, lutil_sasl_interact,
1049 lutil_sasl_freedefs( defaults );
1051 rs->sr_err = slap_map_api2result( rs );
1052 if ( rs->sr_err != LDAP_SUCCESS ) {
1053 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1054 send_ldap_result( op, rs );
1057 LDAP_BACK_CONN_ISBOUND_SET( lc );
1060 if ( LDAP_BACK_QUARANTINE( li ) ) {
1061 ldap_back_quarantine( op, rs );
1066 #endif /* HAVE_CYRUS_SASL */
1069 rs->sr_err = ldap_sasl_bind( lc->lc_ld,
1070 BER_BVISNULL( &lc->lc_cred ) ? "" : lc->lc_bound_ndn.bv_val,
1071 LDAP_SASL_SIMPLE, &lc->lc_cred,
1072 NULL, NULL, &msgid );
1074 if ( rs->sr_err == LDAP_SERVER_DOWN ) {
1075 if ( retries != LDAP_BACK_RETRY_NEVER ) {
1077 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1080 assert( lc->lc_refcnt > 0 );
1081 if ( lc->lc_refcnt == 1 ) {
1082 ldap_unbind_ext( lc->lc_ld, NULL, NULL );
1085 /* lc here must be the regular lc, reset and ready for init */
1086 rs->sr_err = ldap_back_prepare_conn( &lc, op, rs, sendok );
1087 if ( rs->sr_err != LDAP_SUCCESS ) {
1094 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1097 if ( rs->sr_err == LDAP_SUCCESS ) {
1098 if ( retries > 0 ) {
1106 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1110 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1114 /* FIXME: one binding-- too many? */
1116 ldap_back_freeconn( op, lc, dolock );
1118 rs->sr_err = slap_map_api2result( rs );
1120 if ( LDAP_BACK_QUARANTINE( li ) ) {
1121 ldap_back_quarantine( op, rs );
1127 rc = ldap_back_op_result( lc, op, rs, msgid,
1128 -1, (sendok|LDAP_BACK_BINDING) );
1129 if ( rc == LDAP_SUCCESS ) {
1130 LDAP_BACK_CONN_ISBOUND_SET( lc );
1135 LDAP_BACK_CONN_BINDING_CLEAR( lc );
1136 rc = LDAP_BACK_CONN_ISBOUND( lc );
1138 ldap_back_release_conn_lock( op, rs, lcp, dolock );
1145 ldap_back_dobind( ldapconn_t *lc, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
1147 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1149 /* NOTE: ldap_back_dobind_int() may free lc;
1150 * callers of ldap_back_dobind() MUST no longer deal with lc
1151 * in case of failure */
1152 return ldap_back_dobind_int( &lc, op, rs, sendok, li->li_nretries, 1 );
1156 * ldap_back_default_rebind
1158 * This is a callback used for chasing referrals using the same
1159 * credentials as the original user on this session.
1162 ldap_back_default_rebind( LDAP *ld, LDAP_CONST char *url, ber_tag_t request,
1163 ber_int_t msgid, void *params )
1165 ldapconn_t *lc = (ldapconn_t *)params;
1168 /* ... otherwise we couldn't get here */
1169 assert( lc != NULL );
1171 if ( !ldap_tls_inplace( ld ) ) {
1172 int is_tls = LDAP_BACK_CONN_ISTLS( lc ),
1174 const char *text = NULL;
1176 rc = ldap_back_start_tls( ld, 0, &is_tls, url, lc->lc_flags,
1177 LDAP_BACK_RETRY_DEFAULT, &text );
1178 if ( rc != LDAP_SUCCESS ) {
1182 #endif /* HAVE_TLS */
1184 /* FIXME: add checks on the URL/identity? */
1186 return ldap_sasl_bind_s( ld,
1187 BER_BVISNULL( &lc->lc_cred ) ? "" : lc->lc_bound_ndn.bv_val,
1188 LDAP_SASL_SIMPLE, &lc->lc_cred, NULL, NULL, NULL );
1192 * ldap_back_default_urllist
1195 ldap_back_default_urllist(
1197 LDAPURLDesc **urllist,
1201 ldapinfo_t *li = (ldapinfo_t *)params;
1202 LDAPURLDesc **urltail;
1204 if ( urllist == url ) {
1205 return LDAP_SUCCESS;
1208 for ( urltail = &(*url)->lud_next; *urltail; urltail = &(*urltail)->lud_next )
1211 *urltail = *urllist;
1215 ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
1217 ch_free( li->li_uri );
1220 ldap_get_option( ld, LDAP_OPT_URI, (void *)&li->li_uri );
1221 ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
1223 return LDAP_SUCCESS;
1232 ldap_back_send_t sendok )
1234 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1236 /* default behavior */
1237 if ( LDAP_BACK_ABANDON( li ) ) {
1238 return ldap_abandon_ext( lc->lc_ld, msgid, NULL, NULL );
1241 if ( LDAP_BACK_IGNORE( li ) ) {
1242 return LDAP_SUCCESS;
1245 if ( LDAP_BACK_CANCEL( li ) ) {
1246 /* FIXME: asynchronous? */
1247 return ldap_cancel_s( lc->lc_ld, msgid, NULL, NULL );
1256 ldap_back_op_result(
1262 ldap_back_send_t sendok )
1264 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1269 LDAPControl **ctrls = NULL;
1271 #define ERR_OK(err) ((err) == LDAP_SUCCESS || (err) == LDAP_COMPARE_FALSE || (err) == LDAP_COMPARE_TRUE)
1274 rs->sr_matched = NULL;
1276 rs->sr_ctrls = NULL;
1278 /* if the error recorded in the reply corresponds
1279 * to a successful state, get the error from the
1280 * remote server response */
1281 if ( ERR_OK( rs->sr_err ) ) {
1284 LDAPMessage *res = NULL;
1285 time_t stoptime = (time_t)(-1);
1286 int timeout_err = op->o_protocol >= LDAP_VERSION3 ?
1287 LDAP_ADMINLIMIT_EXCEEDED : LDAP_OTHER;
1288 const char *timeout_text = "Operation timed out";
1290 /* if timeout is not specified, compute and use
1291 * the one specific to the ongoing operation */
1292 if ( timeout == (time_t)(-1) ) {
1293 slap_op_t opidx = slap_req2op( op->o_tag );
1295 if ( opidx == SLAP_OP_SEARCH ) {
1296 if ( op->ors_tlimit <= 0 ) {
1300 timeout = op->ors_tlimit;
1301 timeout_err = LDAP_TIMELIMIT_EXCEEDED;
1302 timeout_text = NULL;
1306 timeout = li->li_timeout[ opidx ];
1310 /* better than nothing :) */
1311 if ( timeout == 0 ) {
1312 if ( li->li_idle_timeout ) {
1313 timeout = li->li_idle_timeout;
1315 } else if ( li->li_conn_ttl ) {
1316 timeout = li->li_conn_ttl;
1321 stoptime = op->o_time + timeout;
1324 LDAP_BACK_TV_SET( &tv );
1327 /* if result parsing fails, note the failure reason */
1328 rc = ldap_result( lc->lc_ld, msgid, LDAP_MSG_ALL, &tv, &res );
1331 if ( timeout && slap_get_time() > stoptime ) {
1332 if ( sendok & LDAP_BACK_BINDING ) {
1333 ldap_unbind_ext( lc->lc_ld, NULL, NULL );
1335 LDAP_BACK_CONN_TAINTED_SET( lc );
1338 (void)ldap_back_cancel( lc, op, rs, msgid, sendok );
1340 rs->sr_err = timeout_err;
1341 rs->sr_text = timeout_text;
1346 LDAP_BACK_TV_SET( &tv );
1347 ldap_pvt_thread_yield();
1351 ldap_get_option( lc->lc_ld, LDAP_OPT_ERROR_NUMBER,
1356 /* otherwise get the result; if it is not
1357 * LDAP_SUCCESS, record it in the reply
1358 * structure (this includes
1359 * LDAP_COMPARE_{TRUE|FALSE}) */
1361 /* only touch when activity actually took place... */
1362 if ( li->li_idle_timeout && lc ) {
1363 lc->lc_time = op->o_time;
1366 rc = ldap_parse_result( lc->lc_ld, res, &rs->sr_err,
1367 &match, &text, &refs, &ctrls, 1 );
1369 if ( rc != LDAP_SUCCESS ) {
1372 if ( refs != NULL ) {
1375 for ( i = 0; refs[ i ] != NULL; i++ )
1377 rs->sr_ref = op->o_tmpalloc( sizeof( struct berval ) * ( i + 1 ),
1379 for ( i = 0; refs[ i ] != NULL; i++ ) {
1380 ber_str2bv( refs[ i ], 0, 0, &rs->sr_ref[ i ] );
1382 BER_BVZERO( &rs->sr_ref[ i ] );
1384 if ( ctrls != NULL ) {
1385 rs->sr_ctrls = ctrls;
1390 /* if the error in the reply structure is not
1391 * LDAP_SUCCESS, try to map it from client
1392 * to server error */
1393 if ( !ERR_OK( rs->sr_err ) ) {
1394 rs->sr_err = slap_map_api2result( rs );
1396 /* internal ops ( op->o_conn == NULL )
1397 * must not reply to client */
1398 if ( op->o_conn && !op->o_do_not_cache && match ) {
1400 /* record the (massaged) matched
1401 * DN into the reply structure */
1402 rs->sr_matched = match;
1406 if ( rs->sr_err == LDAP_UNAVAILABLE ) {
1407 if ( !( sendok & LDAP_BACK_RETRYING ) ) {
1408 if ( LDAP_BACK_QUARANTINE( li ) ) {
1409 ldap_back_quarantine( op, rs );
1411 if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
1412 send_ldap_result( op, rs );
1416 } else if ( op->o_conn &&
1417 ( ( ( sendok & LDAP_BACK_SENDOK ) && ERR_OK( rs->sr_err ) )
1418 || ( ( sendok & LDAP_BACK_SENDERR ) && rs->sr_err != LDAP_SUCCESS ) ) )
1420 send_ldap_result( op, rs );
1424 if ( rs->sr_matched != match ) {
1425 free( (char *)rs->sr_matched );
1427 rs->sr_matched = NULL;
1428 ldap_memfree( match );
1432 ldap_memfree( text );
1437 assert( refs != NULL );
1438 ber_memvfree( (void **)refs );
1439 op->o_tmpfree( rs->sr_ref, op->o_tmpmemctx );
1444 assert( rs->sr_ctrls != NULL );
1445 ldap_controls_free( ctrls );
1446 rs->sr_ctrls = NULL;
1449 return( ERR_OK( rs->sr_err ) ? LDAP_SUCCESS : rs->sr_err );
1452 /* return true if bound, false if failed */
1454 ldap_back_retry( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
1457 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1459 assert( lcp != NULL );
1460 assert( *lcp != NULL );
1462 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1464 if ( (*lcp)->lc_refcnt == 1 ) {
1465 ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
1466 Debug( LDAP_DEBUG_ANY,
1467 "%s ldap_back_retry: retrying URI=\"%s\" DN=\"%s\"\n",
1468 op->o_log_prefix, li->li_uri,
1469 BER_BVISNULL( &(*lcp)->lc_bound_ndn ) ?
1470 "" : (*lcp)->lc_bound_ndn.bv_val );
1471 ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
1473 ldap_unbind_ext( (*lcp)->lc_ld, NULL, NULL );
1474 (*lcp)->lc_ld = NULL;
1475 LDAP_BACK_CONN_ISBOUND_CLEAR( (*lcp) );
1477 /* lc here must be the regular lc, reset and ready for init */
1478 rc = ldap_back_prepare_conn( lcp, op, rs, sendok );
1479 if ( rc != LDAP_SUCCESS ) {
1480 /* freeit, because lc_refcnt == 1 */
1481 (*lcp)->lc_refcnt = 0;
1482 (void)ldap_back_freeconn( op, *lcp, 0 );
1487 rc = ldap_back_dobind_int( lcp, op, rs, sendok, 0, 0 );
1488 if ( rc == 0 && *lcp != NULL ) {
1489 /* freeit, because lc_refcnt == 1 */
1490 (*lcp)->lc_refcnt = 0;
1491 LDAP_BACK_CONN_TAINTED_SET( *lcp );
1492 (void)ldap_back_freeconn( op, *lcp, 0 );
1498 Debug( LDAP_DEBUG_TRACE,
1499 "ldap_back_retry: conn %p refcnt=%u unable to retry.\n",
1500 (void *)(*lcp), (*lcp)->lc_refcnt, 0 );
1502 LDAP_BACK_CONN_TAINTED_SET( *lcp );
1503 ldap_back_release_conn_lock( op, rs, lcp, 0 );
1504 assert( *lcp == NULL );
1507 rs->sr_err = LDAP_UNAVAILABLE;
1508 rs->sr_text = "unable to retry";
1509 send_ldap_result( op, rs );
1513 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1519 ldap_back_proxy_authz_bind( ldapconn_t *lc, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
1521 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1522 struct berval binddn = slap_empty_bv;
1523 struct berval bindcred = slap_empty_bv;
1529 /* don't proxyAuthz if protocol is not LDAPv3 */
1530 switch ( li->li_version ) {
1535 if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
1541 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1542 if ( sendok & LDAP_BACK_SENDERR ) {
1543 send_ldap_result( op, rs );
1545 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1549 LDAP_BACK_CONN_ISIDASSERT_SET( lc );
1551 if ( op->o_tag == LDAP_REQ_BIND ) {
1552 ndn = op->o_req_ndn;
1554 } else if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
1555 ndn = op->o_conn->c_ndn;
1562 * FIXME: we need to let clients use proxyAuthz
1563 * otherwise we cannot do symmetric pools of servers;
1564 * we have to live with the fact that a user can
1565 * authorize itself as any ID that is allowed
1566 * by the authzTo directive of the "proxyauthzdn".
1569 * NOTE: current Proxy Authorization specification
1570 * and implementation do not allow proxy authorization
1571 * control to be provided with Bind requests
1574 * if no bind took place yet, but the connection is bound
1575 * and the "proxyauthzdn" is set, then bind as
1576 * "proxyauthzdn" and explicitly add the proxyAuthz
1577 * control to every operation with the dn bound
1578 * to the connection as control value.
1580 /* bind as proxyauthzdn only if no idassert mode
1581 * is requested, or if the client's identity
1583 switch ( li->li_idassert_mode ) {
1584 case LDAP_BACK_IDASSERT_LEGACY:
1585 if ( !BER_BVISNULL( &ndn ) && !BER_BVISEMPTY( &ndn ) ) {
1586 if ( !BER_BVISNULL( &li->li_idassert_authcDN ) && !BER_BVISEMPTY( &li->li_idassert_authcDN ) )
1588 binddn = li->li_idassert_authcDN;
1589 bindcred = li->li_idassert_passwd;
1596 /* NOTE: rootdn can always idassert */
1597 if ( BER_BVISNULL( &ndn ) && li->li_idassert_authz == NULL ) {
1598 if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
1599 rs->sr_err = LDAP_INAPPROPRIATE_AUTH;
1600 if ( sendok & LDAP_BACK_SENDERR ) {
1601 send_ldap_result( op, rs );
1603 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1606 rs->sr_err = LDAP_SUCCESS;
1607 binddn = slap_empty_bv;
1608 bindcred = slap_empty_bv;
1614 } else if ( li->li_idassert_authz && !be_isroot( op ) ) {
1615 struct berval authcDN;
1617 if ( BER_BVISNULL( &ndn ) ) {
1618 authcDN = slap_empty_bv;
1623 rs->sr_err = slap_sasl_matches( op, li->li_idassert_authz,
1624 &authcDN, &authcDN );
1625 if ( rs->sr_err != LDAP_SUCCESS ) {
1626 if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
1627 if ( sendok & LDAP_BACK_SENDERR ) {
1628 send_ldap_result( op, rs );
1630 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1633 rs->sr_err = LDAP_SUCCESS;
1634 binddn = slap_empty_bv;
1635 bindcred = slap_empty_bv;
1643 binddn = li->li_idassert_authcDN;
1644 bindcred = li->li_idassert_passwd;
1649 if ( dobind && li->li_idassert_authmethod == LDAP_AUTH_SASL ) {
1650 #ifdef HAVE_CYRUS_SASL
1651 void *defaults = NULL;
1652 struct berval authzID = BER_BVNULL;
1655 /* if SASL supports native authz, prepare for it */
1656 if ( ( !op->o_do_not_cache || !op->o_is_auth_check ) &&
1657 ( li->li_idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) )
1659 switch ( li->li_idassert_mode ) {
1660 case LDAP_BACK_IDASSERT_OTHERID:
1661 case LDAP_BACK_IDASSERT_OTHERDN:
1662 authzID = li->li_idassert_authzID;
1665 case LDAP_BACK_IDASSERT_ANONYMOUS:
1666 BER_BVSTR( &authzID, "dn:" );
1669 case LDAP_BACK_IDASSERT_SELF:
1670 if ( BER_BVISNULL( &ndn ) ) {
1671 /* connection is not authc'd, so don't idassert */
1672 BER_BVSTR( &authzID, "dn:" );
1675 authzID.bv_len = STRLENOF( "dn:" ) + ndn.bv_len;
1676 authzID.bv_val = slap_sl_malloc( authzID.bv_len + 1, op->o_tmpmemctx );
1677 AC_MEMCPY( authzID.bv_val, "dn:", STRLENOF( "dn:" ) );
1678 AC_MEMCPY( authzID.bv_val + STRLENOF( "dn:" ),
1679 ndn.bv_val, ndn.bv_len + 1 );
1688 if ( li->li_idassert_secprops != NULL ) {
1689 rs->sr_err = ldap_set_option( lc->lc_ld,
1690 LDAP_OPT_X_SASL_SECPROPS,
1691 (void *)li->li_idassert_secprops );
1693 if ( rs->sr_err != LDAP_OPT_SUCCESS ) {
1694 rs->sr_err = LDAP_OTHER;
1695 if ( sendok & LDAP_BACK_SENDERR ) {
1696 send_ldap_result( op, rs );
1698 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1703 defaults = lutil_sasl_defaults( lc->lc_ld,
1704 li->li_idassert_sasl_mech.bv_val,
1705 li->li_idassert_sasl_realm.bv_val,
1706 li->li_idassert_authcID.bv_val,
1707 li->li_idassert_passwd.bv_val,
1710 rs->sr_err = ldap_sasl_interactive_bind_s( lc->lc_ld, binddn.bv_val,
1711 li->li_idassert_sasl_mech.bv_val, NULL, NULL,
1712 LDAP_SASL_QUIET, lutil_sasl_interact,
1715 rs->sr_err = slap_map_api2result( rs );
1716 if ( rs->sr_err != LDAP_SUCCESS ) {
1717 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1718 if ( sendok & LDAP_BACK_SENDERR ) {
1719 send_ldap_result( op, rs );
1723 LDAP_BACK_CONN_ISBOUND_SET( lc );
1726 lutil_sasl_freedefs( defaults );
1728 slap_sl_free( authzID.bv_val, op->o_tmpmemctx );
1732 #endif /* HAVE_CYRUS_SASL */
1735 switch ( li->li_idassert_authmethod ) {
1736 case LDAP_AUTH_NONE:
1737 BER_BVSTR( &binddn, "" );
1738 BER_BVSTR( &bindcred, "" );
1741 case LDAP_AUTH_SIMPLE:
1742 rs->sr_err = ldap_sasl_bind( lc->lc_ld,
1743 binddn.bv_val, LDAP_SASL_SIMPLE,
1744 &bindcred, NULL, NULL, &msgid );
1745 rc = ldap_back_op_result( lc, op, rs, msgid,
1746 -1, (sendok|LDAP_BACK_BINDING) );
1751 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1752 rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
1753 if ( sendok & LDAP_BACK_SENDERR ) {
1754 send_ldap_result( op, rs );
1759 if ( rc == LDAP_SUCCESS ) {
1760 /* set rebind stuff in case of successful proxyAuthz bind,
1761 * so that referral chasing is attempted using the right
1763 LDAP_BACK_CONN_ISBOUND_SET( lc );
1764 ber_bvreplace( &lc->lc_bound_ndn, &binddn );
1766 if ( LDAP_BACK_SAVECRED( li ) ) {
1767 if ( !BER_BVISNULL( &lc->lc_cred ) ) {
1768 memset( lc->lc_cred.bv_val, 0,
1769 lc->lc_cred.bv_len );
1771 ber_bvreplace( &lc->lc_cred, &bindcred );
1772 ldap_set_rebind_proc( lc->lc_ld, li->li_rebind_f, lc );
1776 return LDAP_BACK_CONN_ISBOUND( lc );
1780 * ldap_back_proxy_authz_ctrl() prepends a proxyAuthz control
1781 * to existing server-side controls if required; if not,
1782 * the existing server-side controls are placed in *pctrls.
1783 * The caller, after using the controls in client API
1784 * operations, if ( *pctrls != op->o_ctrls ), should
1785 * free( (*pctrls)[ 0 ] ) and free( *pctrls ).
1786 * The function returns success if the control could
1787 * be added if required, or if it did nothing; in the future,
1788 * it might return some error if it failed.
1790 * if no bind took place yet, but the connection is bound
1791 * and the "proxyauthzdn" is set, then bind as "proxyauthzdn"
1792 * and explicitly add proxyAuthz the control to every operation
1793 * with the dn bound to the connection as control value.
1795 * If no server-side controls are defined for the operation,
1796 * simply add the proxyAuthz control; otherwise, if the
1797 * proxyAuthz control is not already set, add it as
1800 * FIXME: is controls order significant for security?
1801 * ANSWER: controls ordering and interoperability
1802 * must be indicated by the specs of each control; if none
1803 * is specified, the order is irrelevant.
1806 ldap_back_proxy_authz_ctrl(
1807 struct berval *bound_ndn,
1809 slap_idassert_t *si,
1812 LDAPControl ***pctrls )
1814 LDAPControl **ctrls = NULL;
1816 slap_idassert_mode_t mode;
1817 struct berval assertedID,
1822 rs->sr_err = LDAP_SUCCESS;
1824 /* don't proxyAuthz if protocol is not LDAPv3 */
1825 switch ( version ) {
1830 if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
1839 /* FIXME: SASL/EXTERNAL over ldapi:// doesn't honor the authcID,
1840 * but if it is not set this test fails. We need a different
1841 * means to detect if idassert is enabled */
1842 if ( ( BER_BVISNULL( &si->si_bc.sb_authcId ) || BER_BVISEMPTY( &si->si_bc.sb_authcId ) )
1843 && ( BER_BVISNULL( &si->si_bc.sb_binddn ) || BER_BVISEMPTY( &si->si_bc.sb_binddn ) ) )
1848 if ( !op->o_conn || op->o_do_not_cache || be_isroot( op ) ) {
1852 if ( op->o_tag == LDAP_REQ_BIND ) {
1853 ndn = op->o_req_ndn;
1855 } else if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
1856 ndn = op->o_conn->c_ndn;
1862 if ( si->si_mode == LDAP_BACK_IDASSERT_LEGACY ) {
1863 if ( op->o_proxy_authz ) {
1865 * FIXME: we do not want to perform proxyAuthz
1866 * on behalf of the client, because this would
1867 * be performed with "proxyauthzdn" privileges.
1869 * This might actually be too strict, since
1870 * the "proxyauthzdn" authzTo, and each entry's
1871 * authzFrom attributes may be crafted
1872 * to avoid unwanted proxyAuthz to take place.
1875 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1876 rs->sr_text = "proxyAuthz not allowed within namingContext";
1881 if ( !BER_BVISNULL( bound_ndn ) ) {
1885 if ( BER_BVISNULL( &ndn ) ) {
1889 if ( BER_BVISNULL( &si->si_bc.sb_binddn ) ) {
1893 } else if ( si->si_bc.sb_method == LDAP_AUTH_SASL ) {
1894 if ( ( si->si_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) )
1896 /* already asserted in SASL via native authz */
1900 } else if ( si->si_authz && !be_isroot( op ) ) {
1902 struct berval authcDN;
1904 if ( BER_BVISNULL( &ndn ) ) {
1905 authcDN = slap_empty_bv;
1909 rc = slap_sasl_matches( op, si->si_authz,
1910 &authcDN, & authcDN );
1911 if ( rc != LDAP_SUCCESS ) {
1912 if ( si->si_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
1913 /* ndn is not authorized
1914 * to use idassert */
1921 if ( op->o_proxy_authz ) {
1924 * 1) ignore the already set proxyAuthz control
1925 * 2) leave it in place, and don't set ours
1927 * 4) reject the operation
1929 * option (4) is very drastic
1930 * option (3) will make the remote server reject
1931 * the operation, thus being equivalent to (4)
1932 * option (2) will likely break the idassert
1933 * assumptions, so we cannot accept it;
1934 * option (1) means that we are contradicting
1935 * the client's reques.
1937 * I think (4) is the only correct choice.
1939 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1940 rs->sr_text = "proxyAuthz not allowed within namingContext";
1943 if ( op->o_is_auth_check ) {
1944 mode = LDAP_BACK_IDASSERT_NOASSERT;
1951 case LDAP_BACK_IDASSERT_SELF:
1952 if ( BER_BVISNULL( &ndn ) ) {
1958 case LDAP_BACK_IDASSERT_LEGACY:
1959 /* original behavior:
1960 * assert the client's identity */
1961 if ( BER_BVISNULL( &ndn ) ) {
1962 assertedID = slap_empty_bv;
1968 case LDAP_BACK_IDASSERT_ANONYMOUS:
1969 /* assert "anonymous" */
1970 assertedID = slap_empty_bv;
1973 case LDAP_BACK_IDASSERT_NOASSERT:
1974 /* don't assert; bind as proxyauthzdn */
1977 case LDAP_BACK_IDASSERT_OTHERID:
1978 case LDAP_BACK_IDASSERT_OTHERDN:
1979 /* assert idassert DN */
1980 assertedID = si->si_bc.sb_authzId;
1987 if ( BER_BVISNULL( &assertedID ) ) {
1988 assertedID = slap_empty_bv;
1991 /* don't idassert the bound DN (ITS#4497) */
1992 if ( dn_match( &assertedID, bound_ndn ) ) {
1996 if ( op->o_ctrls ) {
1997 for ( i = 0; op->o_ctrls[ i ]; i++ )
1998 /* just count ctrls */ ;
2001 ctrls = op->o_tmpalloc( sizeof( LDAPControl * ) * (i + 2) + sizeof( LDAPControl ),
2003 ctrls[ 0 ] = (LDAPControl *)&ctrls[ i + 2 ];
2005 ctrls[ 0 ]->ldctl_oid = LDAP_CONTROL_PROXY_AUTHZ;
2006 ctrls[ 0 ]->ldctl_iscritical = 1;
2008 switch ( si->si_mode ) {
2009 /* already in u:ID or dn:DN form */
2010 case LDAP_BACK_IDASSERT_OTHERID:
2011 case LDAP_BACK_IDASSERT_OTHERDN:
2012 ber_dupbv_x( &ctrls[ 0 ]->ldctl_value, &assertedID, op->o_tmpmemctx );
2015 /* needs the dn: prefix */
2017 ctrls[ 0 ]->ldctl_value.bv_len = assertedID.bv_len + STRLENOF( "dn:" );
2018 ctrls[ 0 ]->ldctl_value.bv_val = op->o_tmpalloc( ctrls[ 0 ]->ldctl_value.bv_len + 1,
2020 AC_MEMCPY( ctrls[ 0 ]->ldctl_value.bv_val, "dn:", STRLENOF( "dn:" ) );
2021 AC_MEMCPY( &ctrls[ 0 ]->ldctl_value.bv_val[ STRLENOF( "dn:" ) ],
2022 assertedID.bv_val, assertedID.bv_len + 1 );
2026 /* Older versions of <draft-weltman-ldapv3-proxy> required
2027 * to encode the value of the authzID (and called it proxyDN);
2028 * this hack provides compatibility with those DSAs that
2029 * implement it this way */
2030 if ( si->si_flags & LDAP_BACK_AUTH_OBSOLETE_ENCODING_WORKAROUND ) {
2031 struct berval authzID = ctrls[ 0 ]->ldctl_value;
2032 BerElementBuffer berbuf;
2033 BerElement *ber = (BerElement *)&berbuf;
2036 ber_init2( ber, 0, LBER_USE_DER );
2037 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
2039 tag = ber_printf( ber, "O", &authzID );
2040 if ( tag == LBER_ERROR ) {
2041 rs->sr_err = LDAP_OTHER;
2045 if ( ber_flatten2( ber, &ctrls[ 0 ]->ldctl_value, 1 ) == -1 ) {
2046 rs->sr_err = LDAP_OTHER;
2051 op->o_tmpfree( authzID.bv_val, op->o_tmpmemctx );
2052 ber_free_buf( ber );
2054 if ( rs->sr_err != LDAP_SUCCESS ) {
2055 op->o_tmpfree( ctrls, op->o_tmpmemctx );
2060 } else if ( si->si_flags & LDAP_BACK_AUTH_OBSOLETE_PROXY_AUTHZ ) {
2061 struct berval authzID = ctrls[ 0 ]->ldctl_value,
2063 BerElementBuffer berbuf;
2064 BerElement *ber = (BerElement *)&berbuf;
2067 if ( strncasecmp( authzID.bv_val, "dn:", STRLENOF( "dn:" ) ) != 0 ) {
2068 op->o_tmpfree( ctrls[ 0 ]->ldctl_value.bv_val, op->o_tmpmemctx );
2069 op->o_tmpfree( ctrls, op->o_tmpmemctx );
2071 rs->sr_err = LDAP_PROTOCOL_ERROR;
2076 tmp.bv_val += STRLENOF( "dn:" );
2077 tmp.bv_len -= STRLENOF( "dn:" );
2079 ber_init2( ber, 0, LBER_USE_DER );
2080 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
2082 /* apparently, Mozilla API encodes this
2083 * as "SEQUENCE { LDAPDN }" */
2084 tag = ber_printf( ber, "{O}", &tmp );
2085 if ( tag == LBER_ERROR ) {
2086 rs->sr_err = LDAP_OTHER;
2090 if ( ber_flatten2( ber, &ctrls[ 0 ]->ldctl_value, 1 ) == -1 ) {
2091 rs->sr_err = LDAP_OTHER;
2096 op->o_tmpfree( authzID.bv_val, op->o_tmpmemctx );
2097 ber_free_buf( ber );
2099 if ( rs->sr_err != LDAP_SUCCESS ) {
2100 op->o_tmpfree( ctrls, op->o_tmpmemctx );
2105 ctrls[ 0 ]->ldctl_oid = LDAP_CONTROL_OBSOLETE_PROXY_AUTHZ;
2108 if ( op->o_ctrls ) {
2109 for ( i = 0; op->o_ctrls[ i ]; i++ ) {
2110 ctrls[ i + 1 ] = op->o_ctrls[ i ];
2113 ctrls[ i + 1 ] = NULL;
2116 if ( ctrls == NULL ) {
2117 ctrls = op->o_ctrls;
2126 ldap_back_proxy_authz_ctrl_free( Operation *op, LDAPControl ***pctrls )
2128 LDAPControl **ctrls = *pctrls;
2130 /* we assume that the first control is the proxyAuthz
2131 * added by back-ldap, so it's the only one we explicitly
2133 if ( ctrls && ctrls != op->o_ctrls ) {
2134 assert( ctrls[ 0 ] != NULL );
2136 if ( !BER_BVISNULL( &ctrls[ 0 ]->ldctl_value ) ) {
2137 op->o_tmpfree( ctrls[ 0 ]->ldctl_value.bv_val, op->o_tmpmemctx );
2140 op->o_tmpfree( ctrls, op->o_tmpmemctx );