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 static LDAP_REBIND_PROC ldap_back_default_rebind;
46 LDAP_REBIND_PROC *ldap_back_rebind_f = ldap_back_default_rebind;
49 ldap_back_proxy_authz_bind( ldapconn_t *lc, Operation *op, SlapReply *rs, ldap_back_send_t sendok );
52 ldap_back_prepare_conn( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok );
55 ldap_back_conndnlc_cmp( const void *c1, const void *c2 );
58 ldap_back_bind( Operation *op, SlapReply *rs )
60 ldapinfo_t *li = (ldapinfo_t *) op->o_bd->be_private;
66 lc = ldap_back_getconn( op, rs, LDAP_BACK_BIND_SERR );
71 if ( !BER_BVISNULL( &lc->lc_bound_ndn ) ) {
72 ch_free( lc->lc_bound_ndn.bv_val );
73 BER_BVZERO( &lc->lc_bound_ndn );
75 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
77 /* method is always LDAP_AUTH_SIMPLE if we got here */
78 rs->sr_err = ldap_sasl_bind( lc->lc_ld, op->o_req_dn.bv_val,
80 &op->orb_cred, op->o_ctrls, NULL, &msgid );
81 rc = ldap_back_op_result( lc, op, rs, msgid, 0, LDAP_BACK_SENDERR );
83 if ( rc == LDAP_SUCCESS ) {
84 /* If defined, proxyAuthz will be used also when
85 * back-ldap is the authorizing backend; for this
86 * purpose, a successful bind is followed by a
87 * bind with the configured identity assertion */
88 /* NOTE: use with care */
89 if ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) {
90 ldap_back_proxy_authz_bind( lc, op, rs, LDAP_BACK_SENDERR );
91 if ( !LDAP_BACK_CONN_ISBOUND( lc ) ) {
97 LDAP_BACK_CONN_ISBOUND_SET( lc );
98 ber_dupbv( &lc->lc_bound_ndn, &op->o_req_ndn );
100 if ( LDAP_BACK_SAVECRED( li ) ) {
101 if ( !BER_BVISNULL( &lc->lc_cred ) ) {
102 memset( lc->lc_cred.bv_val, 0,
103 lc->lc_cred.bv_len );
105 ber_bvreplace( &lc->lc_cred, &op->orb_cred );
106 ldap_set_rebind_proc( lc->lc_ld, ldap_back_rebind_f, lc );
111 assert( lc->lc_binding == 1 );
114 /* must re-insert if local DN changed as result of bind */
115 if ( !LDAP_BACK_CONN_ISBOUND( lc )
116 || ( LDAP_BACK_CONN_ISBOUND( lc )
117 && !dn_match( &op->o_req_ndn, &lc->lc_local_ndn ) ) )
122 /* wait for all other ops to release the connection */
124 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
125 if ( lc->lc_refcnt > 1 ) {
126 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
127 ldap_pvt_thread_yield();
131 assert( lc->lc_refcnt == 1 );
132 tmplc = avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
133 ldap_back_conndnlc_cmp );
134 assert( tmplc == NULL || lc == tmplc );
136 if ( LDAP_BACK_CONN_ISBOUND( lc ) ) {
137 ber_bvreplace( &lc->lc_local_ndn, &op->o_req_ndn );
138 lerr = avl_insert( &li->li_conninfo.lai_tree, (caddr_t)lc,
139 ldap_back_conndn_cmp, ldap_back_conndn_dup );
142 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
148 /* duplicate; someone else successfully bound
149 * on the same connection with the same identity;
150 * we can do this because lc_refcnt == 1 */
151 ldap_back_conn_free( lc );
157 ldap_back_release_conn( op, rs, lc );
164 * ldap_back_conndn_cmp
166 * compares two ldapconn_t based on the value of the conn pointer
167 * and of the local DN; used by avl stuff for insert, lookup
171 ldap_back_conndn_cmp( const void *c1, const void *c2 )
173 const ldapconn_t *lc1 = (const ldapconn_t *)c1;
174 const ldapconn_t *lc2 = (const ldapconn_t *)c2;
177 /* If local DNs don't match, it is definitely not a match */
178 /* For shared sessions, conn is NULL. Only explicitly
179 * bound sessions will have non-NULL conn.
181 rc = SLAP_PTRCMP( lc1->lc_conn, lc2->lc_conn );
183 rc = ber_bvcmp( &lc1->lc_local_ndn, &lc2->lc_local_ndn );
190 * ldap_back_conndnlc_cmp
192 * compares two ldapconn_t based on the value of the conn pointer,
193 * the local DN and the lc pointer; used by avl stuff for insert, lookup
197 ldap_back_conndnlc_cmp( const void *c1, const void *c2 )
199 const ldapconn_t *lc1 = (const ldapconn_t *)c1;
200 const ldapconn_t *lc2 = (const ldapconn_t *)c2;
203 /* If local DNs don't match, it is definitely not a match */
204 /* For shared sessions, conn is NULL. Only explicitly
205 * bound sessions will have non-NULL conn.
207 rc = SLAP_PTRCMP( lc1->lc_conn, lc2->lc_conn );
209 rc = ber_bvcmp( &lc1->lc_local_ndn, &lc2->lc_local_ndn );
211 rc = SLAP_PTRCMP( lc1, lc2 );
221 * compares two ldapconn_t based on the value of the conn pointer;
222 * used by avl stuff for delete of all conns with the same connid
225 ldap_back_conn_cmp( const void *c1, const void *c2 )
227 const ldapconn_t *lc1 = (const ldapconn_t *)c1;
228 const ldapconn_t *lc2 = (const ldapconn_t *)c2;
230 /* For shared sessions, conn is NULL. Only explicitly
231 * bound sessions will have non-NULL conn.
233 return SLAP_PTRCMP( lc1->lc_conn, lc2->lc_conn );
237 * ldap_back_conndn_dup
239 * returns -1 in case a duplicate ldapconn_t has been inserted;
243 ldap_back_conndn_dup( void *c1, void *c2 )
245 ldapconn_t *lc1 = (ldapconn_t *)c1;
246 ldapconn_t *lc2 = (ldapconn_t *)c2;
248 /* Cannot have more than one shared session with same DN */
249 if ( lc1->lc_conn == lc2->lc_conn &&
250 dn_match( &lc1->lc_local_ndn, &lc2->lc_local_ndn ) )
258 #if PRINT_CONNTREE > 0
260 ravl_print( Avlnode *root, int depth )
269 ravl_print( root->avl_right, depth+1 );
271 for ( i = 0; i < depth; i++ ) {
272 fprintf( stderr, "-" );
276 fprintf( stderr, "lc=%p local=\"%s\" conn=%p %s refcnt=%d\n",
277 (void *)lc, lc->lc_local_ndn.bv_val, (void *)lc->lc_conn,
278 avl_bf2str( root->avl_bf ), lc->lc_refcnt );
280 ravl_print( root->avl_left, depth+1 );
284 myprint( Avlnode *root )
286 fprintf( stderr, "========>\n" );
289 fprintf( stderr, "\tNULL\n" );
292 ravl_print( root, 0 );
295 fprintf( stderr, "<========\n" );
297 #endif /* PRINT_CONNTREE */
300 ldap_back_freeconn( Operation *op, ldapconn_t *lc, int dolock )
302 ldapinfo_t *li = (ldapinfo_t *) op->o_bd->be_private;
306 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
309 tmplc = avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
310 ldap_back_conndnlc_cmp );
311 assert( LDAP_BACK_CONN_TAINTED( lc ) || tmplc == lc );
312 if ( lc->lc_refcnt == 0 ) {
313 ldap_back_conn_free( (void *)lc );
317 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
334 int rc = LDAP_SUCCESS;
337 /* this is ridiculous... */
338 dummy.li_flags = flags;
340 /* start TLS ("tls-[try-]{start,propagate}" statements) */
341 if ( ( LDAP_BACK_USE_TLS( &dummy ) || ( *is_tls && LDAP_BACK_PROPAGATE_TLS( &dummy ) ) )
342 && !ldap_is_ldaps_url( url ) )
344 #ifdef SLAP_STARTTLS_ASYNCHRONOUS
346 * use asynchronous StartTLS
347 * in case, chase referral (not implemented yet)
351 if ( protocol == 0 ) {
352 ldap_get_option( ld, LDAP_OPT_PROTOCOL_VERSION,
356 if ( protocol < LDAP_VERSION3 ) {
357 /* we should rather bail out... */
358 rc = LDAP_UNWILLING_TO_PERFORM;
359 *text = "invalid protocol version";
362 if ( rc == LDAP_SUCCESS ) {
363 rc = ldap_start_tls( ld, NULL, NULL, &msgid );
366 if ( rc == LDAP_SUCCESS ) {
367 LDAPMessage *res = NULL;
370 LDAP_BACK_TV_SET( &tv );
373 rc = ldap_result( ld, msgid, LDAP_MSG_ALL, &tv, &res );
375 rc = LDAP_UNAVAILABLE;
377 } else if ( rc == 0 ) {
378 if ( retries != LDAP_BACK_RETRY_NEVER ) {
379 ldap_pvt_thread_yield();
383 LDAP_BACK_TV_SET( &tv );
386 rc = LDAP_UNAVAILABLE;
388 } else if ( rc == LDAP_RES_EXTENDED ) {
389 struct berval *data = NULL;
391 rc = ldap_parse_extended_result( ld, res,
393 if ( rc == LDAP_SUCCESS ) {
395 rc = ldap_parse_result( ld, res, &err,
396 NULL, NULL, NULL, NULL, 1 );
397 if ( rc == LDAP_SUCCESS ) {
402 /* FIXME: in case a referral
403 * is returned, should we try
404 * using it instead of the
406 if ( rc == LDAP_SUCCESS ) {
407 rc = ldap_install_tls( ld );
409 } else if ( rc == LDAP_REFERRAL ) {
410 rc = LDAP_UNWILLING_TO_PERFORM;
411 *text = "unwilling to chase referral returned by Start TLS exop";
415 if ( data->bv_val ) {
416 ber_memfree( data->bv_val );
430 #else /* ! SLAP_STARTTLS_ASYNCHRONOUS */
432 * use synchronous StartTLS
434 rc = ldap_start_tls_s( ld, NULL, NULL );
435 #endif /* ! SLAP_STARTTLS_ASYNCHRONOUS */
437 /* if StartTLS is requested, only attempt it if the URL
438 * is not "ldaps://"; this may occur not only in case
439 * of misconfiguration, but also when used in the chain
440 * overlay, where the "uri" can be parsed out of a referral */
446 case LDAP_SERVER_DOWN:
450 if ( LDAP_BACK_TLS_CRITICAL( &dummy ) ) {
451 *text = "could not start TLS";
455 /* in case Start TLS is not critical */
467 #endif /* HAVE_TLS */
470 ldap_back_prepare_conn( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
472 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
476 int is_tls = op->o_conn->c_is_tls;
477 #endif /* HAVE_TLS */
479 assert( lcp != NULL );
481 rs->sr_err = ldap_initialize( &ld, li->li_uri );
482 if ( rs->sr_err != LDAP_SUCCESS ) {
486 /* Set LDAP version. This will always succeed: If the client
487 * bound with a particular version, then so can we.
489 if ( li->li_version != 0 ) {
490 version = li->li_version;
492 } else if ( op->o_protocol != 0 ) {
493 version = op->o_protocol;
496 /* assume it's an internal op; set to LDAPv3 */
497 version = LDAP_VERSION3;
499 ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION, (const void *)&version );
501 /* automatically chase referrals ("chase-referrals [{yes|no}]" statement) */
502 ldap_set_option( ld, LDAP_OPT_REFERRALS,
503 LDAP_BACK_CHASE_REFERRALS( li ) ? LDAP_OPT_ON : LDAP_OPT_OFF );
505 if ( li->li_network_timeout > 0 ) {
508 tv.tv_sec = li->li_network_timeout;
510 ldap_set_option( ld, LDAP_OPT_NETWORK_TIMEOUT, (const void *)&tv );
514 rs->sr_err = ldap_back_start_tls( ld, op->o_protocol, &is_tls,
515 li->li_uri, li->li_flags, li->li_nretries, &rs->sr_text );
516 if ( rs->sr_err != LDAP_SUCCESS ) {
517 ldap_unbind_ext( ld, NULL, NULL );
520 #endif /* HAVE_TLS */
522 if ( *lcp == NULL ) {
523 *lcp = (ldapconn_t *)ch_calloc( 1, sizeof( ldapconn_t ) );
524 (*lcp)->lc_flags= li->li_flags;
527 (*lcp)->lc_refcnt = 1;
528 (*lcp)->lc_binding = 1;
531 LDAP_BACK_CONN_ISTLS_SET( *lcp );
533 LDAP_BACK_CONN_ISTLS_CLEAR( *lcp );
535 #endif /* HAVE_TLS */
538 if ( rs->sr_err != LDAP_SUCCESS ) {
539 rs->sr_err = slap_map_api2result( rs );
540 if ( sendok & LDAP_BACK_SENDERR ) {
541 if ( rs->sr_text == NULL ) {
542 rs->sr_text = "ldap_initialize() failed";
544 send_ldap_result( op, rs );
549 if ( li->li_conn_ttl > 0 ) {
550 (*lcp)->lc_create_time = op->o_time;
558 ldap_back_getconn( Operation *op, SlapReply *rs, ldap_back_send_t sendok )
560 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
561 ldapconn_t *lc = NULL,
563 int refcnt = 1, binding = 1;
565 /* Internal searches are privileged and shared. So is root. */
566 if ( op->o_do_not_cache || be_isroot( op ) ) {
567 LDAP_BACK_CONN_ISPRIV_SET( &lc_curr );
568 lc_curr.lc_local_ndn = op->o_bd->be_rootndn;
569 lc_curr.lc_conn = LDAP_BACK_PCONN_SET( op );
572 lc_curr.lc_local_ndn = op->o_ndn;
573 /* Explicit binds must not be shared */
574 if ( op->o_tag == LDAP_REQ_BIND || SLAP_IS_AUTHZ_BACKEND( op ) ) {
575 lc_curr.lc_conn = op->o_conn;
578 lc_curr.lc_conn = LDAP_BACK_PCONN_SET( op );
582 /* Explicit Bind requests always get their own conn */
583 if ( !( sendok & LDAP_BACK_BINDING ) ) {
584 /* Searches for a ldapconn in the avl tree */
586 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
588 lc = (ldapconn_t *)avl_find( li->li_conninfo.lai_tree,
589 (caddr_t)&lc_curr, ldap_back_conndn_cmp );
591 /* Don't reuse connections while they're still binding */
592 if ( LDAP_BACK_CONN_BINDING( lc ) ) {
593 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
594 ldap_pvt_thread_yield();
597 refcnt = ++lc->lc_refcnt;
598 binding = ++lc->lc_binding;
600 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
603 /* Looks like we didn't get a bind. Open a new session... */
605 if ( ldap_back_prepare_conn( &lc, op, rs, sendok ) != LDAP_SUCCESS ) {
608 if ( sendok & LDAP_BACK_BINDING ) {
609 LDAP_BACK_CONN_BINDING_SET( lc );
611 lc->lc_conn = lc_curr.lc_conn;
612 ber_dupbv( &lc->lc_local_ndn, &lc_curr.lc_local_ndn );
614 if ( LDAP_BACK_CONN_ISPRIV( &lc_curr ) ) {
615 ber_dupbv( &lc->lc_cred, &li->li_acl_passwd );
616 ber_dupbv( &lc->lc_bound_ndn, &li->li_acl_authcDN );
617 LDAP_BACK_CONN_ISPRIV_SET( lc );
620 BER_BVZERO( &lc->lc_cred );
621 BER_BVZERO( &lc->lc_bound_ndn );
623 /* FIXME: if we set lc_bound_ndn = o_ndn
624 * we end up with a bind with DN but no password! */
625 if ( !BER_BVISEMPTY( &op->o_ndn )
626 && SLAP_IS_AUTHZ_BACKEND( op ) )
628 ber_dupbv( &lc->lc_bound_ndn, &op->o_ndn );
634 /* if start TLS failed but it was not mandatory,
635 * check if the non-TLS connection was already
636 * in cache; in case, destroy the newly created
637 * connection and use the existing one */
638 if ( lc->lc_conn == LDAP_BACK_PCONN_TLS
639 && !ldap_tls_inplace( lc->lc_ld ) )
643 lc_curr.lc_conn = LDAP_BACK_PCONN;
644 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
645 tmplc = (ldapconn_t *)avl_find( li->li_conninfo.lai_tree,
646 (caddr_t)&lc_curr, ldap_back_conndn_cmp );
647 if ( tmplc != NULL ) {
648 refcnt = ++tmplc->lc_refcnt;
649 binding = ++tmplc->lc_binding;
650 ldap_back_conn_free( lc );
653 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
655 if ( tmplc != NULL ) {
659 #endif /* HAVE_TLS */
661 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
663 /* Inserts the newly created ldapconn in the avl tree */
664 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
666 assert( lc->lc_refcnt == 1 );
667 assert( lc->lc_binding == 1 );
668 rs->sr_err = avl_insert( &li->li_conninfo.lai_tree, (caddr_t)lc,
669 ldap_back_conndn_cmp, ldap_back_conndn_dup );
671 #if PRINT_CONNTREE > 0
672 myprint( li->li_conninfo.lai_tree );
673 #endif /* PRINT_CONNTREE */
675 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
677 Debug( LDAP_DEBUG_TRACE,
678 "=>ldap_back_getconn: conn %p inserted refcnt=%u binding=%u\n",
679 (void *)lc, refcnt, binding );
681 /* Err could be -1 in case a duplicate ldapconn is inserted */
682 switch ( rs->sr_err ) {
687 if ( !( sendok & LDAP_BACK_BINDING ) ) {
688 /* duplicate: free and try to get the newly created one */
691 /* taint connection, so that it'll be freed when released */
692 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
693 (void *)avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
694 ldap_back_conndnlc_cmp );
695 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
696 LDAP_BACK_CONN_TAINTED_SET( lc );
700 ldap_back_conn_free( lc );
701 rs->sr_err = LDAP_OTHER;
702 rs->sr_text = "proxy bind collision";
703 if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
704 send_ldap_result( op, rs );
711 char buf[ SLAP_TEXT_BUFLEN ];
714 if ( ( li->li_idle_timeout != 0 && op->o_time > lc->lc_time + li->li_idle_timeout )
715 || ( li->li_conn_ttl != 0 && op->o_time > lc->lc_create_time + li->li_conn_ttl ) )
719 /* let it be used, but taint/delete it so that
720 * no-one else can look it up any further */
721 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
722 (void *)avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
723 ldap_back_conndnlc_cmp );
724 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
725 LDAP_BACK_CONN_TAINTED_SET( lc );
728 if ( LogTest( LDAP_DEBUG_TRACE ) ) {
729 snprintf( buf, sizeof( buf ),
730 "conn %p fetched refcnt=%u binding=%u%s",
731 (void *)lc, refcnt, binding, expiring ? " expiring" : "" );
732 Debug( LDAP_DEBUG_TRACE,
733 "=>ldap_back_getconn: %s.\n", buf, 0, 0 );
737 if ( li->li_idle_timeout && lc ) {
738 lc->lc_time = op->o_time;
746 ldap_back_release_conn_lock(
752 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
755 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
757 assert( lc->lc_refcnt > 0 );
758 LDAP_BACK_CONN_BINDING_CLEAR( lc );
760 if ( LDAP_BACK_CONN_TAINTED( lc ) ) {
761 ldap_back_freeconn( op, lc, 0 );
764 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
771 * Note: as the check for the value of lc->lc_bound was already here, I removed
772 * it from all the callers, and I made the function return the flag, so
773 * it can be used to simplify the check.
775 * Note: dolock indicates whether li->li_conninfo.lai_mutex must be locked or not
778 ldap_back_dobind_int(
782 ldap_back_send_t sendok,
786 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
791 assert( retries >= 0 );
795 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
798 if ( binding == 0 ) {
799 /* check if already bound */
800 rc = LDAP_BACK_CONN_ISBOUND( lc );
804 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
809 if ( LDAP_BACK_CONN_BINDING( lc ) ) {
810 /* if someone else is about to bind it, give up and retry */
812 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
814 ldap_pvt_thread_yield();
818 /* otherwise this thread will bind it */
819 LDAP_BACK_CONN_BINDING_SET( lc );
824 /* wait for pending operations to finish */
825 /* FIXME: may become a bottleneck! */
826 if ( lc->lc_refcnt != lc->lc_binding ) {
828 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
830 ldap_pvt_thread_yield();
835 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
839 while ( lc->lc_refcnt > 1 ) {
840 ldap_pvt_thread_yield();
841 rc = LDAP_BACK_CONN_ISBOUND( lc );
848 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
850 LDAP_BACK_CONN_BINDING_SET( lc );
852 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
857 * FIXME: we need to let clients use proxyAuthz
858 * otherwise we cannot do symmetric pools of servers;
859 * we have to live with the fact that a user can
860 * authorize itself as any ID that is allowed
861 * by the authzTo directive of the "proxyauthzdn".
864 * NOTE: current Proxy Authorization specification
865 * and implementation do not allow proxy authorization
866 * control to be provided with Bind requests
869 * if no bind took place yet, but the connection is bound
870 * and the "idassert-authcDN" (or other ID) is set,
871 * then bind as the asserting identity and explicitly
872 * add the proxyAuthz control to every operation with the
873 * dn bound to the connection as control value.
874 * This is done also if this is the authrizing backend,
875 * but the "override" flag is given to idassert.
876 * It allows to use SASL bind and yet proxyAuthz users
878 if ( op->o_conn != NULL &&
879 !op->o_do_not_cache &&
880 ( BER_BVISNULL( &lc->lc_bound_ndn ) ||
881 ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) ) )
883 (void)ldap_back_proxy_authz_bind( lc, op, rs, sendok );
887 #ifdef HAVE_CYRUS_SASL
888 if ( LDAP_BACK_CONN_ISPRIV( lc )
889 && li->li_acl_authmethod == LDAP_AUTH_SASL )
891 void *defaults = NULL;
893 if ( li->li_acl_secprops != NULL ) {
894 rc = ldap_set_option( lc->lc_ld,
895 LDAP_OPT_X_SASL_SECPROPS, li->li_acl_secprops);
897 if ( rc != LDAP_OPT_SUCCESS ) {
898 Debug( LDAP_DEBUG_ANY, "Error: ldap_set_option "
899 "(%s,SECPROPS,\"%s\") failed!\n",
900 li->li_uri, li->li_acl_secprops, 0 );
905 defaults = lutil_sasl_defaults( lc->lc_ld,
906 li->li_acl_sasl_mech.bv_val,
907 li->li_acl_sasl_realm.bv_val,
908 li->li_acl_authcID.bv_val,
909 li->li_acl_passwd.bv_val,
912 rs->sr_err = ldap_sasl_interactive_bind_s( lc->lc_ld,
913 li->li_acl_authcDN.bv_val,
914 li->li_acl_sasl_mech.bv_val, NULL, NULL,
915 LDAP_SASL_QUIET, lutil_sasl_interact,
918 lutil_sasl_freedefs( defaults );
920 rs->sr_err = slap_map_api2result( rs );
921 if ( rs->sr_err != LDAP_SUCCESS ) {
922 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
923 send_ldap_result( op, rs );
926 LDAP_BACK_CONN_ISBOUND_SET( lc );
930 #endif /* HAVE_CYRUS_SASL */
933 rs->sr_err = ldap_sasl_bind( lc->lc_ld,
934 lc->lc_bound_ndn.bv_val,
935 LDAP_SASL_SIMPLE, &lc->lc_cred,
936 NULL, NULL, &msgid );
938 if ( rs->sr_err == LDAP_SERVER_DOWN ) {
939 if ( retries != LDAP_BACK_RETRY_NEVER ) {
941 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
944 assert( lc->lc_refcnt > 0 );
945 if ( lc->lc_refcnt == 1 ) {
946 ldap_unbind_ext( lc->lc_ld, NULL, NULL );
949 /* lc here must be the regular lc, reset and ready for init */
950 rs->sr_err = ldap_back_prepare_conn( &lc, op, rs, sendok );
951 if ( rs->sr_err != LDAP_SUCCESS ) {
958 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
961 if ( rs->sr_err == LDAP_SUCCESS ) {
970 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
974 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
978 ldap_back_freeconn( op, lc, dolock );
979 rs->sr_err = slap_map_api2result( rs );
984 rc = ldap_back_op_result( lc, op, rs, msgid, 0, sendok );
985 if ( rc == LDAP_SUCCESS ) {
986 LDAP_BACK_CONN_ISBOUND_SET( lc );
991 LDAP_BACK_CONN_BINDING_CLEAR( lc );
992 rc = LDAP_BACK_CONN_ISBOUND( lc );
994 ldap_back_release_conn_lock( op, rs, lc, dolock );
1001 ldap_back_dobind( ldapconn_t *lc, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
1003 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1005 return ldap_back_dobind_int( lc, op, rs, sendok, li->li_nretries, 1 );
1009 * ldap_back_default_rebind
1011 * This is a callback used for chasing referrals using the same
1012 * credentials as the original user on this session.
1015 ldap_back_default_rebind( LDAP *ld, LDAP_CONST char *url, ber_tag_t request,
1016 ber_int_t msgid, void *params )
1018 ldapconn_t *lc = (ldapconn_t *)params;
1021 /* ... otherwise we couldn't get here */
1022 assert( lc != NULL );
1024 if ( !ldap_tls_inplace( ld ) ) {
1025 int is_tls = LDAP_BACK_CONN_ISTLS( lc ),
1027 const char *text = NULL;
1029 rc = ldap_back_start_tls( ld, 0, &is_tls, url, lc->lc_flags,
1030 LDAP_BACK_RETRY_DEFAULT, &text );
1031 if ( rc != LDAP_SUCCESS ) {
1035 #endif /* HAVE_TLS */
1037 /* FIXME: add checks on the URL/identity? */
1039 return ldap_sasl_bind_s( ld, lc->lc_bound_ndn.bv_val,
1040 LDAP_SASL_SIMPLE, &lc->lc_cred, NULL, NULL, NULL );
1044 ldap_back_op_result(
1050 ldap_back_send_t sendok )
1053 LDAPMessage *res = NULL;
1056 #define ERR_OK(err) ((err) == LDAP_SUCCESS || (err) == LDAP_COMPARE_FALSE || (err) == LDAP_COMPARE_TRUE)
1059 rs->sr_matched = NULL;
1061 /* if the error recorded in the reply corresponds
1062 * to a successful state, get the error from the
1063 * remote server response */
1064 if ( ERR_OK( rs->sr_err ) ) {
1069 tv.tv_sec = timeout;
1073 LDAP_BACK_TV_SET( &tv );
1077 /* if result parsing fails, note the failure reason */
1078 rc = ldap_result( lc->lc_ld, msgid, LDAP_MSG_ALL, &tv, &res );
1082 (void)ldap_abandon_ext( lc->lc_ld, msgid, NULL, NULL );
1083 rs->sr_err = op->o_protocol >= LDAP_VERSION3 ?
1084 LDAP_ADMINLIMIT_EXCEEDED : LDAP_OPERATIONS_ERROR;
1085 rs->sr_text = "Operation timed out";
1089 LDAP_BACK_TV_SET( &tv );
1090 ldap_pvt_thread_yield();
1094 ldap_get_option( lc->lc_ld, LDAP_OPT_ERROR_NUMBER,
1099 /* otherwise get the result; if it is not
1100 * LDAP_SUCCESS, record it in the reply
1101 * structure (this includes
1102 * LDAP_COMPARE_{TRUE|FALSE}) */
1104 rc = ldap_parse_result( lc->lc_ld, res, &rs->sr_err,
1105 &match, &text, NULL, NULL, 1 );
1107 if ( rc != LDAP_SUCCESS ) {
1113 /* if the error in the reply structure is not
1114 * LDAP_SUCCESS, try to map it from client
1115 * to server error */
1116 if ( !ERR_OK( rs->sr_err ) ) {
1117 rs->sr_err = slap_map_api2result( rs );
1119 /* internal ops ( op->o_conn == NULL )
1120 * must not reply to client */
1121 if ( op->o_conn && !op->o_do_not_cache && match ) {
1123 /* record the (massaged) matched
1124 * DN into the reply structure */
1125 rs->sr_matched = match;
1129 ( ( sendok & LDAP_BACK_SENDOK )
1130 || ( ( sendok & LDAP_BACK_SENDERR ) && rs->sr_err != LDAP_SUCCESS ) ) )
1132 send_ldap_result( op, rs );
1135 if ( rs->sr_matched != match ) {
1136 free( (char *)rs->sr_matched );
1138 rs->sr_matched = NULL;
1139 ldap_memfree( match );
1142 ldap_memfree( text );
1145 return( ERR_OK( rs->sr_err ) ? LDAP_SUCCESS : rs->sr_err );
1148 /* return true if bound, false if failed */
1150 ldap_back_retry( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
1153 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1155 assert( lcp != NULL );
1156 assert( *lcp != NULL );
1158 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1160 if ( (*lcp)->lc_refcnt == 1 ) {
1161 Debug( LDAP_DEBUG_ANY,
1162 "%s ldap_back_retry: retrying URI=\"%s\" DN=\"%s\"\n",
1163 op->o_log_prefix, li->li_uri,
1164 BER_BVISNULL( &(*lcp)->lc_bound_ndn ) ?
1165 "" : (*lcp)->lc_bound_ndn.bv_val );
1167 ldap_unbind_ext( (*lcp)->lc_ld, NULL, NULL );
1168 (*lcp)->lc_ld = NULL;
1169 LDAP_BACK_CONN_ISBOUND_CLEAR( (*lcp) );
1171 /* lc here must be the regular lc, reset and ready for init */
1172 rc = ldap_back_prepare_conn( lcp, op, rs, sendok );
1173 if ( rc != LDAP_SUCCESS ) {
1178 rc = ldap_back_dobind_int( *lcp, op, rs, sendok, 0, 0 );
1185 Debug( LDAP_DEBUG_TRACE,
1186 "ldap_back_retry: conn %p refcnt=%u unable to retry.\n",
1187 (void *)(*lcp), (*lcp)->lc_refcnt, 0 );
1189 ldap_back_release_conn_lock( op, rs, *lcp, 0 );
1193 rs->sr_err = LDAP_UNAVAILABLE;
1194 rs->sr_text = "unable to retry";
1195 send_ldap_result( op, rs );
1199 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1205 ldap_back_proxy_authz_bind( ldapconn_t *lc, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
1207 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1208 struct berval binddn = slap_empty_bv;
1209 struct berval bindcred = slap_empty_bv;
1215 /* don't proxyAuthz if protocol is not LDAPv3 */
1216 switch ( li->li_version ) {
1221 if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
1230 if ( op->o_tag == LDAP_REQ_BIND ) {
1231 ndn = op->o_req_ndn;
1233 } else if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
1234 ndn = op->o_conn->c_ndn;
1241 * FIXME: we need to let clients use proxyAuthz
1242 * otherwise we cannot do symmetric pools of servers;
1243 * we have to live with the fact that a user can
1244 * authorize itself as any ID that is allowed
1245 * by the authzTo directive of the "proxyauthzdn".
1248 * NOTE: current Proxy Authorization specification
1249 * and implementation do not allow proxy authorization
1250 * control to be provided with Bind requests
1253 * if no bind took place yet, but the connection is bound
1254 * and the "proxyauthzdn" is set, then bind as
1255 * "proxyauthzdn" and explicitly add the proxyAuthz
1256 * control to every operation with the dn bound
1257 * to the connection as control value.
1260 /* bind as proxyauthzdn only if no idassert mode
1261 * is requested, or if the client's identity
1263 switch ( li->li_idassert_mode ) {
1264 case LDAP_BACK_IDASSERT_LEGACY:
1265 if ( !BER_BVISNULL( &ndn ) && !BER_BVISEMPTY( &ndn ) ) {
1266 if ( !BER_BVISNULL( &li->li_idassert_authcDN ) && !BER_BVISEMPTY( &li->li_idassert_authcDN ) )
1268 binddn = li->li_idassert_authcDN;
1269 bindcred = li->li_idassert_passwd;
1276 /* NOTE: rootdn can always idassert */
1277 if ( BER_BVISNULL( &ndn ) && li->li_idassert_authz == NULL ) {
1278 if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
1279 rs->sr_err = LDAP_INAPPROPRIATE_AUTH;
1280 if ( sendok & LDAP_BACK_SENDERR ) {
1281 send_ldap_result( op, rs );
1283 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1286 rs->sr_err = LDAP_SUCCESS;
1287 binddn = slap_empty_bv;
1288 bindcred = slap_empty_bv;
1294 } else if ( li->li_idassert_authz && !be_isroot( op ) ) {
1295 struct berval authcDN;
1297 if ( BER_BVISNULL( &ndn ) ) {
1298 authcDN = slap_empty_bv;
1303 rs->sr_err = slap_sasl_matches( op, li->li_idassert_authz,
1304 &authcDN, &authcDN );
1305 if ( rs->sr_err != LDAP_SUCCESS ) {
1306 if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
1307 if ( sendok & LDAP_BACK_SENDERR ) {
1308 send_ldap_result( op, rs );
1310 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1313 rs->sr_err = LDAP_SUCCESS;
1314 binddn = slap_empty_bv;
1315 bindcred = slap_empty_bv;
1323 binddn = li->li_idassert_authcDN;
1324 bindcred = li->li_idassert_passwd;
1329 if ( dobind && li->li_idassert_authmethod == LDAP_AUTH_SASL ) {
1330 #ifdef HAVE_CYRUS_SASL
1331 void *defaults = NULL;
1332 struct berval authzID = BER_BVNULL;
1335 /* if SASL supports native authz, prepare for it */
1336 if ( ( !op->o_do_not_cache || !op->o_is_auth_check ) &&
1337 ( li->li_idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) )
1339 switch ( li->li_idassert_mode ) {
1340 case LDAP_BACK_IDASSERT_OTHERID:
1341 case LDAP_BACK_IDASSERT_OTHERDN:
1342 authzID = li->li_idassert_authzID;
1345 case LDAP_BACK_IDASSERT_ANONYMOUS:
1346 BER_BVSTR( &authzID, "dn:" );
1349 case LDAP_BACK_IDASSERT_SELF:
1350 if ( BER_BVISNULL( &ndn ) ) {
1351 /* connection is not authc'd, so don't idassert */
1352 BER_BVSTR( &authzID, "dn:" );
1355 authzID.bv_len = STRLENOF( "dn:" ) + ndn.bv_len;
1356 authzID.bv_val = slap_sl_malloc( authzID.bv_len + 1, op->o_tmpmemctx );
1357 AC_MEMCPY( authzID.bv_val, "dn:", STRLENOF( "dn:" ) );
1358 AC_MEMCPY( authzID.bv_val + STRLENOF( "dn:" ),
1359 ndn.bv_val, ndn.bv_len + 1 );
1368 if ( li->li_idassert_secprops != NULL ) {
1369 rs->sr_err = ldap_set_option( lc->lc_ld,
1370 LDAP_OPT_X_SASL_SECPROPS,
1371 (void *)li->li_idassert_secprops );
1373 if ( rs->sr_err != LDAP_OPT_SUCCESS ) {
1374 rs->sr_err = LDAP_OTHER;
1375 if ( sendok & LDAP_BACK_SENDERR ) {
1376 send_ldap_result( op, rs );
1378 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1383 defaults = lutil_sasl_defaults( lc->lc_ld,
1384 li->li_idassert_sasl_mech.bv_val,
1385 li->li_idassert_sasl_realm.bv_val,
1386 li->li_idassert_authcID.bv_val,
1387 li->li_idassert_passwd.bv_val,
1390 rs->sr_err = ldap_sasl_interactive_bind_s( lc->lc_ld, binddn.bv_val,
1391 li->li_idassert_sasl_mech.bv_val, NULL, NULL,
1392 LDAP_SASL_QUIET, lutil_sasl_interact,
1395 rs->sr_err = slap_map_api2result( rs );
1396 if ( rs->sr_err != LDAP_SUCCESS ) {
1397 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1398 if ( sendok & LDAP_BACK_SENDERR ) {
1399 send_ldap_result( op, rs );
1403 LDAP_BACK_CONN_ISBOUND_SET( lc );
1406 lutil_sasl_freedefs( defaults );
1408 slap_sl_free( authzID.bv_val, op->o_tmpmemctx );
1412 #endif /* HAVE_CYRUS_SASL */
1415 switch ( li->li_idassert_authmethod ) {
1416 case LDAP_AUTH_NONE:
1417 LDAP_BACK_CONN_ISBOUND_SET( lc );
1420 case LDAP_AUTH_SIMPLE:
1421 rs->sr_err = ldap_sasl_bind( lc->lc_ld,
1422 binddn.bv_val, LDAP_SASL_SIMPLE,
1423 &bindcred, NULL, NULL, &msgid );
1428 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1429 rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
1430 if ( sendok & LDAP_BACK_SENDERR ) {
1431 send_ldap_result( op, rs );
1436 rc = ldap_back_op_result( lc, op, rs, msgid, 0, sendok );
1437 if ( rc == LDAP_SUCCESS ) {
1438 LDAP_BACK_CONN_ISBOUND_SET( lc );
1441 return LDAP_BACK_CONN_ISBOUND( lc );
1445 * ldap_back_proxy_authz_ctrl() prepends a proxyAuthz control
1446 * to existing server-side controls if required; if not,
1447 * the existing server-side controls are placed in *pctrls.
1448 * The caller, after using the controls in client API
1449 * operations, if ( *pctrls != op->o_ctrls ), should
1450 * free( (*pctrls)[ 0 ] ) and free( *pctrls ).
1451 * The function returns success if the control could
1452 * be added if required, or if it did nothing; in the future,
1453 * it might return some error if it failed.
1455 * if no bind took place yet, but the connection is bound
1456 * and the "proxyauthzdn" is set, then bind as "proxyauthzdn"
1457 * and explicitly add proxyAuthz the control to every operation
1458 * with the dn bound to the connection as control value.
1460 * If no server-side controls are defined for the operation,
1461 * simply add the proxyAuthz control; otherwise, if the
1462 * proxyAuthz control is not already set, add it as
1465 * FIXME: is controls order significant for security?
1466 * ANSWER: controls ordering and interoperability
1467 * must be indicated by the specs of each control; if none
1468 * is specified, the order is irrelevant.
1471 ldap_back_proxy_authz_ctrl(
1475 LDAPControl ***pctrls )
1477 ldapinfo_t *li = (ldapinfo_t *) op->o_bd->be_private;
1478 LDAPControl **ctrls = NULL;
1481 struct berval assertedID,
1486 rs->sr_err = LDAP_SUCCESS;
1488 /* don't proxyAuthz if protocol is not LDAPv3 */
1489 switch ( li->li_version ) {
1494 if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
1503 /* FIXME: SASL/EXTERNAL over ldapi:// doesn't honor the authcID,
1504 * but if it is not set this test fails. We need a different
1505 * means to detect if idassert is enabled */
1506 if ( ( BER_BVISNULL( &li->li_idassert_authcID ) || BER_BVISEMPTY( &li->li_idassert_authcID ) )
1507 && ( BER_BVISNULL( &li->li_idassert_authcDN ) || BER_BVISEMPTY( &li->li_idassert_authcDN ) ) )
1512 if ( !op->o_conn || op->o_do_not_cache || be_isroot( op ) ) {
1516 if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
1517 ndn = op->o_conn->c_ndn;
1523 if ( li->li_idassert_mode == LDAP_BACK_IDASSERT_LEGACY ) {
1524 if ( op->o_proxy_authz ) {
1526 * FIXME: we do not want to perform proxyAuthz
1527 * on behalf of the client, because this would
1528 * be performed with "proxyauthzdn" privileges.
1530 * This might actually be too strict, since
1531 * the "proxyauthzdn" authzTo, and each entry's
1532 * authzFrom attributes may be crafted
1533 * to avoid unwanted proxyAuthz to take place.
1536 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1537 rs->sr_text = "proxyAuthz not allowed within namingContext";
1542 if ( !BER_BVISNULL( &lc->lc_bound_ndn ) ) {
1546 if ( BER_BVISNULL( &ndn ) ) {
1550 if ( BER_BVISNULL( &li->li_idassert_authcDN ) ) {
1554 } else if ( li->li_idassert_authmethod == LDAP_AUTH_SASL ) {
1555 if ( ( li->li_idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ )
1556 /* && ( !BER_BVISNULL( &ndn )
1557 || LDAP_BACK_CONN_ISBOUND( lc ) ) */ )
1559 /* already asserted in SASL via native authz */
1560 /* NOTE: the test on lc->lc_bound is used to trap
1561 * native authorization of anonymous users,
1562 * since in that case ndn is NULL */
1566 } else if ( li->li_idassert_authz && !be_isroot( op ) ) {
1568 struct berval authcDN;
1570 if ( BER_BVISNULL( &ndn ) ) {
1571 authcDN = slap_empty_bv;
1575 rc = slap_sasl_matches( op, li->li_idassert_authz,
1576 &authcDN, & authcDN );
1577 if ( rc != LDAP_SUCCESS ) {
1578 if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE )
1580 /* ndn is not authorized
1581 * to use idassert */
1588 if ( op->o_proxy_authz ) {
1591 * 1) ignore the already set proxyAuthz control
1592 * 2) leave it in place, and don't set ours
1594 * 4) reject the operation
1596 * option (4) is very drastic
1597 * option (3) will make the remote server reject
1598 * the operation, thus being equivalent to (4)
1599 * option (2) will likely break the idassert
1600 * assumptions, so we cannot accept it;
1601 * option (1) means that we are contradicting
1602 * the client's reques.
1604 * I think (4) is the only correct choice.
1606 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1607 rs->sr_text = "proxyAuthz not allowed within namingContext";
1610 if ( op->o_is_auth_check ) {
1611 mode = LDAP_BACK_IDASSERT_NOASSERT;
1614 mode = li->li_idassert_mode;
1618 case LDAP_BACK_IDASSERT_SELF:
1619 if ( BER_BVISNULL( &ndn ) ) {
1625 case LDAP_BACK_IDASSERT_LEGACY:
1626 /* original behavior:
1627 * assert the client's identity */
1628 if ( BER_BVISNULL( &ndn ) ) {
1629 assertedID = slap_empty_bv;
1635 case LDAP_BACK_IDASSERT_ANONYMOUS:
1636 /* assert "anonymous" */
1637 assertedID = slap_empty_bv;
1640 case LDAP_BACK_IDASSERT_NOASSERT:
1641 /* don't assert; bind as proxyauthzdn */
1644 case LDAP_BACK_IDASSERT_OTHERID:
1645 case LDAP_BACK_IDASSERT_OTHERDN:
1646 /* assert idassert DN */
1647 assertedID = li->li_idassert_authzID;
1654 if ( BER_BVISNULL( &assertedID ) ) {
1655 assertedID = slap_empty_bv;
1658 /* don't idassert the bound DN (ITS#4497) */
1659 if ( dn_match( &assertedID, &lc->lc_bound_ndn ) ) {
1663 if ( op->o_ctrls ) {
1664 for ( i = 0; op->o_ctrls[ i ]; i++ )
1665 /* just count ctrls */ ;
1668 ctrls = op->o_tmpalloc( sizeof( LDAPControl * ) * (i + 2) + sizeof( LDAPControl ),
1670 ctrls[ 0 ] = (LDAPControl *)&ctrls[ i + 2 ];
1672 ctrls[ 0 ]->ldctl_oid = LDAP_CONTROL_PROXY_AUTHZ;
1673 ctrls[ 0 ]->ldctl_iscritical = 1;
1675 switch ( li->li_idassert_mode ) {
1676 /* already in u:ID or dn:DN form */
1677 case LDAP_BACK_IDASSERT_OTHERID:
1678 case LDAP_BACK_IDASSERT_OTHERDN:
1679 ber_dupbv_x( &ctrls[ 0 ]->ldctl_value, &assertedID, op->o_tmpmemctx );
1682 /* needs the dn: prefix */
1684 ctrls[ 0 ]->ldctl_value.bv_len = assertedID.bv_len + STRLENOF( "dn:" );
1685 ctrls[ 0 ]->ldctl_value.bv_val = op->o_tmpalloc( ctrls[ 0 ]->ldctl_value.bv_len + 1,
1687 AC_MEMCPY( ctrls[ 0 ]->ldctl_value.bv_val, "dn:", STRLENOF( "dn:" ) );
1688 AC_MEMCPY( &ctrls[ 0 ]->ldctl_value.bv_val[ STRLENOF( "dn:" ) ],
1689 assertedID.bv_val, assertedID.bv_len + 1 );
1693 /* Older versions of <draft-weltman-ldapv3-proxy> required
1694 * to encode the value of the authzID (and called it proxyDN);
1695 * this hack provides compatibility with those DSAs that
1696 * implement it this way */
1697 if ( li->li_idassert_flags & LDAP_BACK_AUTH_OBSOLETE_ENCODING_WORKAROUND ) {
1698 struct berval authzID = ctrls[ 0 ]->ldctl_value;
1699 BerElementBuffer berbuf;
1700 BerElement *ber = (BerElement *)&berbuf;
1703 ber_init2( ber, 0, LBER_USE_DER );
1704 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1706 tag = ber_printf( ber, "O", &authzID );
1707 if ( tag == LBER_ERROR ) {
1708 rs->sr_err = LDAP_OTHER;
1712 if ( ber_flatten2( ber, &ctrls[ 0 ]->ldctl_value, 1 ) == -1 ) {
1713 rs->sr_err = LDAP_OTHER;
1718 op->o_tmpfree( authzID.bv_val, op->o_tmpmemctx );
1719 ber_free_buf( ber );
1721 if ( rs->sr_err != LDAP_SUCCESS ) {
1722 op->o_tmpfree( ctrls, op->o_tmpmemctx );
1727 } else if ( li->li_idassert_flags & LDAP_BACK_AUTH_OBSOLETE_PROXY_AUTHZ ) {
1728 struct berval authzID = ctrls[ 0 ]->ldctl_value,
1730 BerElementBuffer berbuf;
1731 BerElement *ber = (BerElement *)&berbuf;
1734 if ( strncasecmp( authzID.bv_val, "dn:", STRLENOF( "dn:" ) ) != 0 ) {
1735 op->o_tmpfree( ctrls[ 0 ]->ldctl_value.bv_val, op->o_tmpmemctx );
1736 op->o_tmpfree( ctrls, op->o_tmpmemctx );
1738 rs->sr_err = LDAP_PROTOCOL_ERROR;
1743 tmp.bv_val += STRLENOF( "dn:" );
1744 tmp.bv_len -= STRLENOF( "dn:" );
1746 ber_init2( ber, 0, LBER_USE_DER );
1747 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1749 /* apparently, Mozilla API encodes this
1750 * as "SEQUENCE { LDAPDN }" */
1751 tag = ber_printf( ber, "{O}", &tmp );
1752 if ( tag == LBER_ERROR ) {
1753 rs->sr_err = LDAP_OTHER;
1757 if ( ber_flatten2( ber, &ctrls[ 0 ]->ldctl_value, 1 ) == -1 ) {
1758 rs->sr_err = LDAP_OTHER;
1763 op->o_tmpfree( authzID.bv_val, op->o_tmpmemctx );
1764 ber_free_buf( ber );
1766 if ( rs->sr_err != LDAP_SUCCESS ) {
1767 op->o_tmpfree( ctrls, op->o_tmpmemctx );
1772 ctrls[ 0 ]->ldctl_oid = LDAP_CONTROL_OBSOLETE_PROXY_AUTHZ;
1775 if ( op->o_ctrls ) {
1776 for ( i = 0; op->o_ctrls[ i ]; i++ ) {
1777 ctrls[ i + 1 ] = op->o_ctrls[ i ];
1780 ctrls[ i + 1 ] = NULL;
1783 if ( ctrls == NULL ) {
1784 ctrls = op->o_ctrls;
1793 ldap_back_proxy_authz_ctrl_free( Operation *op, LDAPControl ***pctrls )
1795 LDAPControl **ctrls = *pctrls;
1797 /* we assume that the first control is the proxyAuthz
1798 * added by back-ldap, so it's the only one we explicitly
1800 if ( ctrls && ctrls != op->o_ctrls ) {
1801 assert( ctrls[ 0 ] != NULL );
1803 if ( !BER_BVISNULL( &ctrls[ 0 ]->ldctl_value ) ) {
1804 op->o_tmpfree( ctrls[ 0 ]->ldctl_value.bv_val, op->o_tmpmemctx );
1807 op->o_tmpfree( ctrls, op->o_tmpmemctx );