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 assert( lc->lc_refcnt >= 0 );
310 tmplc = avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
311 ldap_back_conndnlc_cmp );
312 assert( LDAP_BACK_CONN_TAINTED( lc ) || tmplc == lc );
313 if ( lc->lc_refcnt == 0 ) {
314 ldap_back_conn_free( (void *)lc );
318 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
335 int rc = LDAP_SUCCESS;
338 /* this is ridiculous... */
339 dummy.li_flags = flags;
341 /* start TLS ("tls-[try-]{start,propagate}" statements) */
342 if ( ( LDAP_BACK_USE_TLS( &dummy ) || ( *is_tls && LDAP_BACK_PROPAGATE_TLS( &dummy ) ) )
343 && !ldap_is_ldaps_url( url ) )
345 #ifdef SLAP_STARTTLS_ASYNCHRONOUS
347 * use asynchronous StartTLS
348 * in case, chase referral (not implemented yet)
352 if ( protocol == 0 ) {
353 ldap_get_option( ld, LDAP_OPT_PROTOCOL_VERSION,
357 if ( protocol < LDAP_VERSION3 ) {
358 protocol = LDAP_VERSION3;
359 /* Set LDAP version */
360 ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION,
361 (const void *)&protocol );
364 rc = ldap_start_tls( ld, NULL, NULL, &msgid );
365 if ( rc == LDAP_SUCCESS ) {
366 LDAPMessage *res = NULL;
369 LDAP_BACK_TV_SET( &tv );
372 rc = ldap_result( ld, msgid, LDAP_MSG_ALL, &tv, &res );
374 rc = LDAP_UNAVAILABLE;
376 } else if ( rc == 0 ) {
377 if ( retries != LDAP_BACK_RETRY_NEVER ) {
378 ldap_pvt_thread_yield();
382 LDAP_BACK_TV_SET( &tv );
385 rc = LDAP_UNAVAILABLE;
387 } else if ( rc == LDAP_RES_EXTENDED ) {
388 struct berval *data = NULL;
390 rc = ldap_parse_extended_result( ld, res,
392 if ( rc == LDAP_SUCCESS ) {
394 rc = ldap_parse_result( ld, res, &err,
395 NULL, NULL, NULL, NULL, 1 );
396 if ( rc == LDAP_SUCCESS ) {
401 /* FIXME: in case a referral
402 * is returned, should we try
403 * using it instead of the
405 if ( rc == LDAP_SUCCESS ) {
406 rc = ldap_install_tls( ld );
408 } else if ( rc == LDAP_REFERRAL ) {
409 rc = LDAP_UNWILLING_TO_PERFORM;
410 *text = "unwilling to chase referral returned by Start TLS exop";
414 if ( data->bv_val ) {
415 ber_memfree( data->bv_val );
429 #else /* ! SLAP_STARTTLS_ASYNCHRONOUS */
431 * use synchronous StartTLS
433 rc = ldap_start_tls_s( ld, NULL, NULL );
434 #endif /* ! SLAP_STARTTLS_ASYNCHRONOUS */
436 /* if StartTLS is requested, only attempt it if the URL
437 * is not "ldaps://"; this may occur not only in case
438 * of misconfiguration, but also when used in the chain
439 * overlay, where the "uri" can be parsed out of a referral */
445 case LDAP_SERVER_DOWN:
449 if ( LDAP_BACK_TLS_CRITICAL( &dummy ) ) {
450 *text = "could not start TLS";
454 /* in case Start TLS is not critical */
466 #endif /* HAVE_TLS */
469 ldap_back_prepare_conn( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
471 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
472 int vers = op->o_protocol;
475 int is_tls = op->o_conn->c_is_tls;
476 #endif /* HAVE_TLS */
478 assert( lcp != NULL );
480 rs->sr_err = ldap_initialize( &ld, li->li_uri );
481 if ( rs->sr_err != LDAP_SUCCESS ) {
485 /* Set LDAP version. This will always succeed: If the client
486 * bound with a particular version, then so can we.
489 /* assume it's an internal op; set to LDAPv3 */
490 vers = LDAP_VERSION3;
492 ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION, (const void *)&vers );
494 /* automatically chase referrals ("chase-referrals [{yes|no}]" statement) */
495 ldap_set_option( ld, LDAP_OPT_REFERRALS,
496 LDAP_BACK_CHASE_REFERRALS( li ) ? LDAP_OPT_ON : LDAP_OPT_OFF );
498 if ( li->li_network_timeout > 0 ) {
501 tv.tv_sec = li->li_network_timeout;
503 ldap_set_option( ld, LDAP_OPT_NETWORK_TIMEOUT, (const void *)&tv );
507 rs->sr_err = ldap_back_start_tls( ld, op->o_protocol, &is_tls,
508 li->li_uri, li->li_flags, li->li_nretries, &rs->sr_text );
509 if ( rs->sr_err != LDAP_SUCCESS ) {
510 ldap_unbind_ext( ld, NULL, NULL );
513 #endif /* HAVE_TLS */
515 if ( *lcp == NULL ) {
516 *lcp = (ldapconn_t *)ch_calloc( 1, sizeof( ldapconn_t ) );
517 (*lcp)->lc_flags= li->li_flags;
520 (*lcp)->lc_refcnt = 1;
521 (*lcp)->lc_binding = 1;
524 LDAP_BACK_CONN_ISTLS_SET( *lcp );
526 LDAP_BACK_CONN_ISTLS_CLEAR( *lcp );
528 #endif /* HAVE_TLS */
531 if ( rs->sr_err != LDAP_SUCCESS ) {
532 rs->sr_err = slap_map_api2result( rs );
533 if ( sendok & LDAP_BACK_SENDERR ) {
534 if ( rs->sr_text == NULL ) {
535 rs->sr_text = "ldap_initialize() failed";
537 send_ldap_result( op, rs );
542 if ( li->li_conn_ttl > 0 ) {
543 (*lcp)->lc_create_time = op->o_time;
551 ldap_back_getconn( Operation *op, SlapReply *rs, ldap_back_send_t sendok )
553 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
554 ldapconn_t *lc = NULL,
556 int refcnt = 1, binding = 1;
558 /* Internal searches are privileged and shared. So is root. */
559 if ( op->o_do_not_cache || be_isroot( op ) ) {
560 LDAP_BACK_CONN_ISPRIV_SET( &lc_curr );
561 lc_curr.lc_local_ndn = op->o_bd->be_rootndn;
562 lc_curr.lc_conn = LDAP_BACK_PCONN_SET( op );
565 lc_curr.lc_local_ndn = op->o_ndn;
566 /* Explicit binds must not be shared */
567 if ( op->o_tag == LDAP_REQ_BIND || SLAP_IS_AUTHZ_BACKEND( op ) ) {
568 lc_curr.lc_conn = op->o_conn;
571 lc_curr.lc_conn = LDAP_BACK_PCONN_SET( op );
575 /* Explicit Bind requests always get their own conn */
576 if ( !( sendok & LDAP_BACK_BINDING ) ) {
577 /* Searches for a ldapconn in the avl tree */
579 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
581 lc = (ldapconn_t *)avl_find( li->li_conninfo.lai_tree,
582 (caddr_t)&lc_curr, ldap_back_conndn_cmp );
584 /* Don't reuse connections while they're still binding */
585 if ( LDAP_BACK_CONN_BINDING( lc ) ) {
586 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
587 ldap_pvt_thread_yield();
590 refcnt = ++lc->lc_refcnt;
591 binding = ++lc->lc_binding;
593 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
596 /* Looks like we didn't get a bind. Open a new session... */
598 if ( ldap_back_prepare_conn( &lc, op, rs, sendok ) != LDAP_SUCCESS ) {
601 if ( sendok & LDAP_BACK_BINDING ) {
602 LDAP_BACK_CONN_BINDING_SET( lc );
604 lc->lc_conn = lc_curr.lc_conn;
605 ber_dupbv( &lc->lc_local_ndn, &lc_curr.lc_local_ndn );
607 if ( LDAP_BACK_CONN_ISPRIV( &lc_curr ) ) {
608 ber_dupbv( &lc->lc_cred, &li->li_acl_passwd );
609 ber_dupbv( &lc->lc_bound_ndn, &li->li_acl_authcDN );
610 LDAP_BACK_CONN_ISPRIV_SET( lc );
613 BER_BVZERO( &lc->lc_cred );
614 BER_BVZERO( &lc->lc_bound_ndn );
616 /* FIXME: if we set lc_bound_ndn = o_ndn
617 * we end up with a bind with DN but no password! */
618 if ( !BER_BVISEMPTY( &op->o_ndn )
619 && SLAP_IS_AUTHZ_BACKEND( op ) )
621 ber_dupbv( &lc->lc_bound_ndn, &op->o_ndn );
627 /* if start TLS failed but it was not mandatory,
628 * check if the non-TLS connection was already
629 * in cache; in case, destroy the newly created
630 * connection and use the existing one */
631 if ( lc->lc_conn == LDAP_BACK_PCONN_TLS
632 && !ldap_tls_inplace( lc->lc_ld ) )
636 lc_curr.lc_conn = LDAP_BACK_PCONN;
637 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
638 tmplc = (ldapconn_t *)avl_find( li->li_conninfo.lai_tree,
639 (caddr_t)&lc_curr, ldap_back_conndn_cmp );
640 if ( tmplc != NULL ) {
641 refcnt = ++tmplc->lc_refcnt;
642 binding = ++tmplc->lc_binding;
643 ldap_back_conn_free( lc );
646 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
648 if ( tmplc != NULL ) {
652 #endif /* HAVE_TLS */
654 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
656 /* Inserts the newly created ldapconn in the avl tree */
657 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
659 assert( lc->lc_refcnt == 1 );
660 assert( lc->lc_binding == 1 );
661 rs->sr_err = avl_insert( &li->li_conninfo.lai_tree, (caddr_t)lc,
662 ldap_back_conndn_cmp, ldap_back_conndn_dup );
664 #if PRINT_CONNTREE > 0
665 myprint( li->li_conninfo.lai_tree );
666 #endif /* PRINT_CONNTREE */
668 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
670 Debug( LDAP_DEBUG_TRACE,
671 "=>ldap_back_getconn: conn %p inserted refcnt=%u binding=%u\n",
672 (void *)lc, refcnt, binding );
674 /* Err could be -1 in case a duplicate ldapconn is inserted */
675 switch ( rs->sr_err ) {
680 if ( !( sendok & LDAP_BACK_BINDING ) ) {
681 /* duplicate: free and try to get the newly created one */
684 /* taint connection, so that it'll be freed when released */
685 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
686 (void *)avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
687 ldap_back_conndnlc_cmp );
688 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
689 LDAP_BACK_CONN_TAINTED_SET( lc );
693 ldap_back_conn_free( lc );
694 rs->sr_err = LDAP_OTHER;
695 rs->sr_text = "proxy bind collision";
696 if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
697 send_ldap_result( op, rs );
704 char buf[ SLAP_TEXT_BUFLEN ];
707 if ( ( li->li_idle_timeout != 0 && op->o_time > lc->lc_time + li->li_idle_timeout )
708 || ( li->li_conn_ttl != 0 && op->o_time > lc->lc_create_time + li->li_conn_ttl ) )
712 /* let it be used, but taint/delete it so that
713 * no-one else can look it up any further */
714 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
715 (void *)avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
716 ldap_back_conndnlc_cmp );
717 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
718 LDAP_BACK_CONN_TAINTED_SET( lc );
721 if ( LogTest( LDAP_DEBUG_TRACE ) ) {
722 snprintf( buf, sizeof( buf ),
723 "conn %p fetched refcnt=%u binding=%u%s",
724 (void *)lc, refcnt, binding, expiring ? " expiring" : "" );
725 Debug( LDAP_DEBUG_TRACE,
726 "=>ldap_back_getconn: %s.\n", buf, 0, 0 );
730 if ( li->li_idle_timeout && lc ) {
731 lc->lc_time = op->o_time;
739 ldap_back_release_conn_lock(
745 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
748 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
750 assert( lc->lc_refcnt > 0 );
751 LDAP_BACK_CONN_BINDING_CLEAR( lc );
753 if ( LDAP_BACK_CONN_TAINTED( lc ) ) {
754 ldap_back_freeconn( op, lc, 0 );
757 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
764 * Note: as the check for the value of lc->lc_bound was already here, I removed
765 * it from all the callers, and I made the function return the flag, so
766 * it can be used to simplify the check.
768 * Note: dolock indicates whether li->li_conninfo.lai_mutex must be locked or not
771 ldap_back_dobind_int(
775 ldap_back_send_t sendok,
779 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
784 assert( retries >= 0 );
788 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
791 if ( binding == 0 ) {
792 /* check if already bound */
793 rc = LDAP_BACK_CONN_ISBOUND( lc );
797 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
802 if ( LDAP_BACK_CONN_BINDING( lc ) ) {
803 /* if someone else is about to bind it, give up and retry */
805 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
807 ldap_pvt_thread_yield();
811 /* otherwise this thread will bind it */
812 LDAP_BACK_CONN_BINDING_SET( lc );
817 /* wait for pending operations to finish */
818 /* FIXME: may become a bottleneck! */
819 if ( lc->lc_refcnt != lc->lc_binding ) {
821 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
823 ldap_pvt_thread_yield();
828 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
832 while ( lc->lc_refcnt > 1 ) {
833 ldap_pvt_thread_yield();
834 rc = LDAP_BACK_CONN_ISBOUND( lc );
841 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
843 LDAP_BACK_CONN_BINDING_SET( lc );
845 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
850 * FIXME: we need to let clients use proxyAuthz
851 * otherwise we cannot do symmetric pools of servers;
852 * we have to live with the fact that a user can
853 * authorize itself as any ID that is allowed
854 * by the authzTo directive of the "proxyauthzdn".
857 * NOTE: current Proxy Authorization specification
858 * and implementation do not allow proxy authorization
859 * control to be provided with Bind requests
862 * if no bind took place yet, but the connection is bound
863 * and the "idassert-authcDN" (or other ID) is set,
864 * then bind as the asserting identity and explicitly
865 * add the proxyAuthz control to every operation with the
866 * dn bound to the connection as control value.
867 * This is done also if this is the authrizing backend,
868 * but the "override" flag is given to idassert.
869 * It allows to use SASL bind and yet proxyAuthz users
871 if ( op->o_conn != NULL &&
872 !op->o_do_not_cache &&
873 ( BER_BVISNULL( &lc->lc_bound_ndn ) ||
874 ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) ) )
876 (void)ldap_back_proxy_authz_bind( lc, op, rs, sendok );
880 #ifdef HAVE_CYRUS_SASL
881 if ( LDAP_BACK_CONN_ISPRIV( lc )
882 && li->li_acl_authmethod == LDAP_AUTH_SASL )
884 void *defaults = NULL;
886 if ( li->li_acl_secprops != NULL ) {
887 rc = ldap_set_option( lc->lc_ld,
888 LDAP_OPT_X_SASL_SECPROPS, li->li_acl_secprops);
890 if ( rc != LDAP_OPT_SUCCESS ) {
891 Debug( LDAP_DEBUG_ANY, "Error: ldap_set_option "
892 "(%s,SECPROPS,\"%s\") failed!\n",
893 li->li_uri, li->li_acl_secprops, 0 );
898 defaults = lutil_sasl_defaults( lc->lc_ld,
899 li->li_acl_sasl_mech.bv_val,
900 li->li_acl_sasl_realm.bv_val,
901 li->li_acl_authcID.bv_val,
902 li->li_acl_passwd.bv_val,
905 rs->sr_err = ldap_sasl_interactive_bind_s( lc->lc_ld,
906 li->li_acl_authcDN.bv_val,
907 li->li_acl_sasl_mech.bv_val, NULL, NULL,
908 LDAP_SASL_QUIET, lutil_sasl_interact,
911 lutil_sasl_freedefs( defaults );
913 rs->sr_err = slap_map_api2result( rs );
914 if ( rs->sr_err != LDAP_SUCCESS ) {
915 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
916 send_ldap_result( op, rs );
919 LDAP_BACK_CONN_ISBOUND_SET( lc );
923 #endif /* HAVE_CYRUS_SASL */
926 rs->sr_err = ldap_sasl_bind( lc->lc_ld,
927 lc->lc_bound_ndn.bv_val,
928 LDAP_SASL_SIMPLE, &lc->lc_cred,
929 NULL, NULL, &msgid );
931 if ( rs->sr_err == LDAP_SERVER_DOWN ) {
932 if ( retries != LDAP_BACK_RETRY_NEVER ) {
934 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
937 assert( lc->lc_refcnt > 0 );
938 if ( lc->lc_refcnt == 1 ) {
939 ldap_unbind_ext( lc->lc_ld, NULL, NULL );
942 /* lc here must be the regular lc, reset and ready for init */
943 rs->sr_err = ldap_back_prepare_conn( &lc, op, rs, sendok );
944 if ( rs->sr_err != LDAP_SUCCESS ) {
951 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
954 if ( rs->sr_err == LDAP_SUCCESS ) {
963 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
967 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
971 ldap_back_freeconn( op, lc, dolock );
972 rs->sr_err = slap_map_api2result( rs );
977 rc = ldap_back_op_result( lc, op, rs, msgid, 0, sendok );
978 if ( rc == LDAP_SUCCESS ) {
979 LDAP_BACK_CONN_ISBOUND_SET( lc );
984 LDAP_BACK_CONN_BINDING_CLEAR( lc );
985 rc = LDAP_BACK_CONN_ISBOUND( lc );
987 ldap_back_release_conn_lock( op, rs, lc, dolock );
994 ldap_back_dobind( ldapconn_t *lc, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
996 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
998 return ldap_back_dobind_int( lc, op, rs, sendok, li->li_nretries, 1 );
1002 * ldap_back_default_rebind
1004 * This is a callback used for chasing referrals using the same
1005 * credentials as the original user on this session.
1008 ldap_back_default_rebind( LDAP *ld, LDAP_CONST char *url, ber_tag_t request,
1009 ber_int_t msgid, void *params )
1011 ldapconn_t *lc = (ldapconn_t *)params;
1014 /* ... otherwise we couldn't get here */
1015 assert( lc != NULL );
1017 if ( !ldap_tls_inplace( ld ) ) {
1018 int is_tls = LDAP_BACK_CONN_ISTLS( lc ),
1020 const char *text = NULL;
1022 rc = ldap_back_start_tls( ld, 0, &is_tls, url, lc->lc_flags,
1023 LDAP_BACK_RETRY_DEFAULT, &text );
1024 if ( rc != LDAP_SUCCESS ) {
1028 #endif /* HAVE_TLS */
1030 /* FIXME: add checks on the URL/identity? */
1032 return ldap_sasl_bind_s( ld, lc->lc_bound_ndn.bv_val,
1033 LDAP_SASL_SIMPLE, &lc->lc_cred, NULL, NULL, NULL );
1037 ldap_back_op_result(
1043 ldap_back_send_t sendok )
1046 LDAPMessage *res = NULL;
1049 #define ERR_OK(err) ((err) == LDAP_SUCCESS || (err) == LDAP_COMPARE_FALSE || (err) == LDAP_COMPARE_TRUE)
1052 rs->sr_matched = NULL;
1054 /* if the error recorded in the reply corresponds
1055 * to a successful state, get the error from the
1056 * remote server response */
1057 if ( ERR_OK( rs->sr_err ) ) {
1062 tv.tv_sec = timeout;
1066 LDAP_BACK_TV_SET( &tv );
1070 /* if result parsing fails, note the failure reason */
1071 rc = ldap_result( lc->lc_ld, msgid, LDAP_MSG_ALL, &tv, &res );
1075 (void)ldap_abandon_ext( lc->lc_ld, msgid, NULL, NULL );
1076 rs->sr_err = op->o_protocol >= LDAP_VERSION3 ?
1077 LDAP_ADMINLIMIT_EXCEEDED : LDAP_OPERATIONS_ERROR;
1078 rs->sr_text = "Operation timed out";
1082 LDAP_BACK_TV_SET( &tv );
1083 ldap_pvt_thread_yield();
1087 ldap_get_option( lc->lc_ld, LDAP_OPT_ERROR_NUMBER,
1092 /* otherwise get the result; if it is not
1093 * LDAP_SUCCESS, record it in the reply
1094 * structure (this includes
1095 * LDAP_COMPARE_{TRUE|FALSE}) */
1097 rc = ldap_parse_result( lc->lc_ld, res, &rs->sr_err,
1098 &match, &text, NULL, NULL, 1 );
1100 if ( rc != LDAP_SUCCESS ) {
1106 /* if the error in the reply structure is not
1107 * LDAP_SUCCESS, try to map it from client
1108 * to server error */
1109 if ( !ERR_OK( rs->sr_err ) ) {
1110 rs->sr_err = slap_map_api2result( rs );
1112 /* internal ops ( op->o_conn == NULL )
1113 * must not reply to client */
1114 if ( op->o_conn && !op->o_do_not_cache && match ) {
1116 /* record the (massaged) matched
1117 * DN into the reply structure */
1118 rs->sr_matched = match;
1122 ( ( sendok & LDAP_BACK_SENDOK )
1123 || ( ( sendok & LDAP_BACK_SENDERR ) && rs->sr_err != LDAP_SUCCESS ) ) )
1125 send_ldap_result( op, rs );
1128 if ( rs->sr_matched != match ) {
1129 free( (char *)rs->sr_matched );
1131 rs->sr_matched = NULL;
1132 ldap_memfree( match );
1135 ldap_memfree( text );
1138 return( ERR_OK( rs->sr_err ) ? LDAP_SUCCESS : rs->sr_err );
1141 /* return true if bound, false if failed */
1143 ldap_back_retry( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
1146 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1148 assert( lcp != NULL );
1149 assert( *lcp != NULL );
1151 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1153 if ( (*lcp)->lc_refcnt == 1 ) {
1154 Debug( LDAP_DEBUG_ANY,
1155 "%s ldap_back_retry: retrying URI=\"%s\" DN=\"%s\"\n",
1156 op->o_log_prefix, li->li_uri,
1157 BER_BVISNULL( &(*lcp)->lc_bound_ndn ) ?
1158 "" : (*lcp)->lc_bound_ndn.bv_val );
1160 ldap_unbind_ext( (*lcp)->lc_ld, NULL, NULL );
1161 (*lcp)->lc_ld = NULL;
1162 LDAP_BACK_CONN_ISBOUND_CLEAR( (*lcp) );
1164 /* lc here must be the regular lc, reset and ready for init */
1165 rc = ldap_back_prepare_conn( lcp, op, rs, sendok );
1166 if ( rc != LDAP_SUCCESS ) {
1171 rc = ldap_back_dobind_int( *lcp, op, rs, sendok, 0, 0 );
1178 Debug( LDAP_DEBUG_TRACE,
1179 "ldap_back_retry: conn %p refcnt=%u unable to retry.\n",
1180 (void *)(*lcp), (*lcp)->lc_refcnt, 0 );
1182 ldap_back_release_conn_lock( op, rs, *lcp, 0 );
1186 rs->sr_err = LDAP_UNAVAILABLE;
1187 rs->sr_text = "unable to retry";
1188 send_ldap_result( op, rs );
1192 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1198 ldap_back_proxy_authz_bind( ldapconn_t *lc, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
1200 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1201 struct berval binddn = slap_empty_bv;
1202 struct berval bindcred = slap_empty_bv;
1208 if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
1209 ndn = op->o_conn->c_ndn;
1216 * FIXME: we need to let clients use proxyAuthz
1217 * otherwise we cannot do symmetric pools of servers;
1218 * we have to live with the fact that a user can
1219 * authorize itself as any ID that is allowed
1220 * by the authzTo directive of the "proxyauthzdn".
1223 * NOTE: current Proxy Authorization specification
1224 * and implementation do not allow proxy authorization
1225 * control to be provided with Bind requests
1228 * if no bind took place yet, but the connection is bound
1229 * and the "proxyauthzdn" is set, then bind as
1230 * "proxyauthzdn" and explicitly add the proxyAuthz
1231 * control to every operation with the dn bound
1232 * to the connection as control value.
1235 /* bind as proxyauthzdn only if no idassert mode
1236 * is requested, or if the client's identity
1238 switch ( li->li_idassert_mode ) {
1239 case LDAP_BACK_IDASSERT_LEGACY:
1240 if ( !BER_BVISNULL( &ndn ) && !BER_BVISEMPTY( &ndn ) ) {
1241 if ( !BER_BVISNULL( &li->li_idassert_authcDN ) && !BER_BVISEMPTY( &li->li_idassert_authcDN ) )
1243 binddn = li->li_idassert_authcDN;
1244 bindcred = li->li_idassert_passwd;
1251 /* NOTE: rootdn can always idassert */
1252 if ( BER_BVISNULL( &ndn ) && li->li_idassert_authz == NULL ) {
1253 if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
1254 rs->sr_err = LDAP_INAPPROPRIATE_AUTH;
1255 if ( sendok & LDAP_BACK_SENDERR ) {
1256 send_ldap_result( op, rs );
1258 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1261 rs->sr_err = LDAP_SUCCESS;
1262 binddn = slap_empty_bv;
1263 bindcred = slap_empty_bv;
1269 } else if ( li->li_idassert_authz && !be_isroot( op ) ) {
1270 struct berval authcDN;
1272 if ( BER_BVISNULL( &ndn ) ) {
1273 authcDN = slap_empty_bv;
1278 rs->sr_err = slap_sasl_matches( op, li->li_idassert_authz,
1279 &authcDN, &authcDN );
1280 if ( rs->sr_err != LDAP_SUCCESS ) {
1281 if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
1282 if ( sendok & LDAP_BACK_SENDERR ) {
1283 send_ldap_result( op, rs );
1285 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1288 rs->sr_err = LDAP_SUCCESS;
1289 binddn = slap_empty_bv;
1290 bindcred = slap_empty_bv;
1298 binddn = li->li_idassert_authcDN;
1299 bindcred = li->li_idassert_passwd;
1304 if ( dobind && li->li_idassert_authmethod == LDAP_AUTH_SASL ) {
1305 #ifdef HAVE_CYRUS_SASL
1306 void *defaults = NULL;
1307 struct berval authzID = BER_BVNULL;
1310 /* if SASL supports native authz, prepare for it */
1311 if ( ( !op->o_do_not_cache || !op->o_is_auth_check ) &&
1312 ( li->li_idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) )
1314 switch ( li->li_idassert_mode ) {
1315 case LDAP_BACK_IDASSERT_OTHERID:
1316 case LDAP_BACK_IDASSERT_OTHERDN:
1317 authzID = li->li_idassert_authzID;
1320 case LDAP_BACK_IDASSERT_ANONYMOUS:
1321 BER_BVSTR( &authzID, "dn:" );
1324 case LDAP_BACK_IDASSERT_SELF:
1325 if ( BER_BVISNULL( &ndn ) ) {
1326 /* connection is not authc'd, so don't idassert */
1327 BER_BVSTR( &authzID, "dn:" );
1330 authzID.bv_len = STRLENOF( "dn:" ) + ndn.bv_len;
1331 authzID.bv_val = slap_sl_malloc( authzID.bv_len + 1, op->o_tmpmemctx );
1332 AC_MEMCPY( authzID.bv_val, "dn:", STRLENOF( "dn:" ) );
1333 AC_MEMCPY( authzID.bv_val + STRLENOF( "dn:" ),
1334 ndn.bv_val, ndn.bv_len + 1 );
1343 if ( li->li_idassert_secprops != NULL ) {
1344 rs->sr_err = ldap_set_option( lc->lc_ld,
1345 LDAP_OPT_X_SASL_SECPROPS,
1346 (void *)li->li_idassert_secprops );
1348 if ( rs->sr_err != LDAP_OPT_SUCCESS ) {
1349 rs->sr_err = LDAP_OTHER;
1350 if ( sendok & LDAP_BACK_SENDERR ) {
1351 send_ldap_result( op, rs );
1353 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1358 defaults = lutil_sasl_defaults( lc->lc_ld,
1359 li->li_idassert_sasl_mech.bv_val,
1360 li->li_idassert_sasl_realm.bv_val,
1361 li->li_idassert_authcID.bv_val,
1362 li->li_idassert_passwd.bv_val,
1365 rs->sr_err = ldap_sasl_interactive_bind_s( lc->lc_ld, binddn.bv_val,
1366 li->li_idassert_sasl_mech.bv_val, NULL, NULL,
1367 LDAP_SASL_QUIET, lutil_sasl_interact,
1370 rs->sr_err = slap_map_api2result( rs );
1371 if ( rs->sr_err != LDAP_SUCCESS ) {
1372 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1373 if ( sendok & LDAP_BACK_SENDERR ) {
1374 send_ldap_result( op, rs );
1378 LDAP_BACK_CONN_ISBOUND_SET( lc );
1381 lutil_sasl_freedefs( defaults );
1383 slap_sl_free( authzID.bv_val, op->o_tmpmemctx );
1387 #endif /* HAVE_CYRUS_SASL */
1390 switch ( li->li_idassert_authmethod ) {
1391 case LDAP_AUTH_NONE:
1392 LDAP_BACK_CONN_ISBOUND_SET( lc );
1395 case LDAP_AUTH_SIMPLE:
1396 rs->sr_err = ldap_sasl_bind( lc->lc_ld,
1397 binddn.bv_val, LDAP_SASL_SIMPLE,
1398 &bindcred, NULL, NULL, &msgid );
1403 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1404 rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
1405 if ( sendok & LDAP_BACK_SENDERR ) {
1406 send_ldap_result( op, rs );
1411 rc = ldap_back_op_result( lc, op, rs, msgid, 0, sendok );
1412 if ( rc == LDAP_SUCCESS ) {
1413 LDAP_BACK_CONN_ISBOUND_SET( lc );
1416 return LDAP_BACK_CONN_ISBOUND( lc );
1420 * ldap_back_proxy_authz_ctrl() prepends a proxyAuthz control
1421 * to existing server-side controls if required; if not,
1422 * the existing server-side controls are placed in *pctrls.
1423 * The caller, after using the controls in client API
1424 * operations, if ( *pctrls != op->o_ctrls ), should
1425 * free( (*pctrls)[ 0 ] ) and free( *pctrls ).
1426 * The function returns success if the control could
1427 * be added if required, or if it did nothing; in the future,
1428 * it might return some error if it failed.
1430 * if no bind took place yet, but the connection is bound
1431 * and the "proxyauthzdn" is set, then bind as "proxyauthzdn"
1432 * and explicitly add proxyAuthz the control to every operation
1433 * with the dn bound to the connection as control value.
1435 * If no server-side controls are defined for the operation,
1436 * simply add the proxyAuthz control; otherwise, if the
1437 * proxyAuthz control is not already set, add it as
1440 * FIXME: is controls order significant for security?
1441 * ANSWER: controls ordering and interoperability
1442 * must be indicated by the specs of each control; if none
1443 * is specified, the order is irrelevant.
1446 ldap_back_proxy_authz_ctrl(
1450 LDAPControl ***pctrls )
1452 ldapinfo_t *li = (ldapinfo_t *) op->o_bd->be_private;
1453 LDAPControl **ctrls = NULL;
1456 struct berval assertedID,
1461 rs->sr_err = LDAP_SUCCESS;
1463 /* FIXME: SASL/EXTERNAL over ldapi:// doesn't honor the authcID,
1464 * but if it is not set this test fails. We need a different
1465 * means to detect if idassert is enabled */
1466 if ( ( BER_BVISNULL( &li->li_idassert_authcID ) || BER_BVISEMPTY( &li->li_idassert_authcID ) )
1467 && ( BER_BVISNULL( &li->li_idassert_authcDN ) || BER_BVISEMPTY( &li->li_idassert_authcDN ) ) )
1472 if ( !op->o_conn || op->o_do_not_cache || be_isroot( op ) ) {
1476 if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
1477 ndn = op->o_conn->c_ndn;
1483 if ( li->li_idassert_mode == LDAP_BACK_IDASSERT_LEGACY ) {
1484 if ( op->o_proxy_authz ) {
1486 * FIXME: we do not want to perform proxyAuthz
1487 * on behalf of the client, because this would
1488 * be performed with "proxyauthzdn" privileges.
1490 * This might actually be too strict, since
1491 * the "proxyauthzdn" authzTo, and each entry's
1492 * authzFrom attributes may be crafted
1493 * to avoid unwanted proxyAuthz to take place.
1496 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1497 rs->sr_text = "proxyAuthz not allowed within namingContext";
1502 if ( !BER_BVISNULL( &lc->lc_bound_ndn ) ) {
1506 if ( BER_BVISNULL( &ndn ) ) {
1510 if ( BER_BVISNULL( &li->li_idassert_authcDN ) ) {
1514 } else if ( li->li_idassert_authmethod == LDAP_AUTH_SASL ) {
1515 if ( ( li->li_idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ )
1516 /* && ( !BER_BVISNULL( &ndn )
1517 || LDAP_BACK_CONN_ISBOUND( lc ) ) */ )
1519 /* already asserted in SASL via native authz */
1520 /* NOTE: the test on lc->lc_bound is used to trap
1521 * native authorization of anonymous users,
1522 * since in that case ndn is NULL */
1526 } else if ( li->li_idassert_authz && !be_isroot( op ) ) {
1528 struct berval authcDN;
1530 if ( BER_BVISNULL( &ndn ) ) {
1531 authcDN = slap_empty_bv;
1535 rc = slap_sasl_matches( op, li->li_idassert_authz,
1536 &authcDN, & authcDN );
1537 if ( rc != LDAP_SUCCESS ) {
1538 if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE )
1540 /* ndn is not authorized
1541 * to use idassert */
1548 if ( op->o_proxy_authz ) {
1551 * 1) ignore the already set proxyAuthz control
1552 * 2) leave it in place, and don't set ours
1554 * 4) reject the operation
1556 * option (4) is very drastic
1557 * option (3) will make the remote server reject
1558 * the operation, thus being equivalent to (4)
1559 * option (2) will likely break the idassert
1560 * assumptions, so we cannot accept it;
1561 * option (1) means that we are contradicting
1562 * the client's reques.
1564 * I think (4) is the only correct choice.
1566 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1567 rs->sr_text = "proxyAuthz not allowed within namingContext";
1570 if ( op->o_is_auth_check ) {
1571 mode = LDAP_BACK_IDASSERT_NOASSERT;
1574 mode = li->li_idassert_mode;
1578 case LDAP_BACK_IDASSERT_SELF:
1579 if ( BER_BVISNULL( &ndn ) ) {
1585 case LDAP_BACK_IDASSERT_LEGACY:
1586 /* original behavior:
1587 * assert the client's identity */
1588 if ( BER_BVISNULL( &ndn ) ) {
1589 assertedID = slap_empty_bv;
1595 case LDAP_BACK_IDASSERT_ANONYMOUS:
1596 /* assert "anonymous" */
1597 assertedID = slap_empty_bv;
1600 case LDAP_BACK_IDASSERT_NOASSERT:
1601 /* don't assert; bind as proxyauthzdn */
1604 case LDAP_BACK_IDASSERT_OTHERID:
1605 case LDAP_BACK_IDASSERT_OTHERDN:
1606 /* assert idassert DN */
1607 assertedID = li->li_idassert_authzID;
1614 if ( BER_BVISNULL( &assertedID ) ) {
1615 assertedID = slap_empty_bv;
1618 if ( op->o_ctrls ) {
1619 for ( i = 0; op->o_ctrls[ i ]; i++ )
1620 /* just count ctrls */ ;
1623 ctrls = op->o_tmpalloc( sizeof( LDAPControl * ) * (i + 2) + sizeof( LDAPControl ),
1625 ctrls[ 0 ] = (LDAPControl *)&ctrls[ i + 2 ];
1627 ctrls[ 0 ]->ldctl_oid = LDAP_CONTROL_PROXY_AUTHZ;
1628 ctrls[ 0 ]->ldctl_iscritical = 1;
1630 switch ( li->li_idassert_mode ) {
1631 /* already in u:ID or dn:DN form */
1632 case LDAP_BACK_IDASSERT_OTHERID:
1633 case LDAP_BACK_IDASSERT_OTHERDN:
1634 ber_dupbv_x( &ctrls[ 0 ]->ldctl_value, &assertedID, op->o_tmpmemctx );
1637 /* needs the dn: prefix */
1639 ctrls[ 0 ]->ldctl_value.bv_len = assertedID.bv_len + STRLENOF( "dn:" );
1640 ctrls[ 0 ]->ldctl_value.bv_val = op->o_tmpalloc( ctrls[ 0 ]->ldctl_value.bv_len + 1,
1642 AC_MEMCPY( ctrls[ 0 ]->ldctl_value.bv_val, "dn:", STRLENOF( "dn:" ) );
1643 AC_MEMCPY( &ctrls[ 0 ]->ldctl_value.bv_val[ STRLENOF( "dn:" ) ],
1644 assertedID.bv_val, assertedID.bv_len + 1 );
1648 /* Older versions of <draft-weltman-ldapv3-proxy> required
1649 * to encode the value of the authzID (and called it proxyDN);
1650 * this hack provides compatibility with those DSAs that
1651 * implement it this way */
1652 if ( li->li_idassert_flags & LDAP_BACK_AUTH_OBSOLETE_ENCODING_WORKAROUND ) {
1653 struct berval authzID = ctrls[ 0 ]->ldctl_value;
1654 BerElementBuffer berbuf;
1655 BerElement *ber = (BerElement *)&berbuf;
1658 ber_init2( ber, 0, LBER_USE_DER );
1659 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1661 tag = ber_printf( ber, "O", &authzID );
1662 if ( tag == LBER_ERROR ) {
1663 rs->sr_err = LDAP_OTHER;
1667 if ( ber_flatten2( ber, &ctrls[ 0 ]->ldctl_value, 1 ) == -1 ) {
1668 rs->sr_err = LDAP_OTHER;
1673 op->o_tmpfree( authzID.bv_val, op->o_tmpmemctx );
1674 ber_free_buf( ber );
1676 if ( rs->sr_err != LDAP_SUCCESS ) {
1677 op->o_tmpfree( ctrls, op->o_tmpmemctx );
1681 } else if ( li->li_idassert_flags & LDAP_BACK_AUTH_OBSOLETE_PROXY_AUTHZ ) {
1682 struct berval authzID = ctrls[ 0 ]->ldctl_value,
1684 BerElementBuffer berbuf;
1685 BerElement *ber = (BerElement *)&berbuf;
1688 if ( strncasecmp( authzID.bv_val, "dn:", STRLENOF( "dn:" ) ) != 0 ) {
1689 op->o_tmpfree( ctrls[ 0 ]->ldctl_value.bv_val, op->o_tmpmemctx );
1690 op->o_tmpfree( ctrls, op->o_tmpmemctx );
1691 rs->sr_err = LDAP_PROTOCOL_ERROR;
1696 tmp.bv_val += STRLENOF( "dn:" );
1697 tmp.bv_len -= STRLENOF( "dn:" );
1699 ber_init2( ber, 0, LBER_USE_DER );
1700 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1702 /* apparently, Mozilla API encodes this
1703 * as "SEQUENCE { LDAPDN }" */
1704 tag = ber_printf( ber, "{O}", &tmp );
1705 if ( tag == LBER_ERROR ) {
1706 rs->sr_err = LDAP_OTHER;
1710 if ( ber_flatten2( ber, &ctrls[ 0 ]->ldctl_value, 1 ) == -1 ) {
1711 rs->sr_err = LDAP_OTHER;
1716 op->o_tmpfree( authzID.bv_val, op->o_tmpmemctx );
1717 ber_free_buf( ber );
1719 if ( rs->sr_err != LDAP_SUCCESS ) {
1720 op->o_tmpfree( ctrls, op->o_tmpmemctx );
1725 ctrls[ 0 ]->ldctl_oid = LDAP_CONTROL_OBSOLETE_PROXY_AUTHZ;
1728 if ( op->o_ctrls ) {
1729 for ( i = 0; op->o_ctrls[ i ]; i++ ) {
1730 ctrls[ i + 1 ] = op->o_ctrls[ i ];
1733 ctrls[ i + 1 ] = NULL;
1736 if ( ctrls == NULL ) {
1737 ctrls = op->o_ctrls;
1746 ldap_back_proxy_authz_ctrl_free( Operation *op, LDAPControl ***pctrls )
1748 LDAPControl **ctrls = *pctrls;
1750 /* we assume that the first control is the proxyAuthz
1751 * added by back-ldap, so it's the only one we explicitly
1753 if ( ctrls && ctrls != op->o_ctrls ) {
1754 assert( ctrls[ 0 ] != NULL );
1756 if ( !BER_BVISNULL( &ctrls[ 0 ]->ldctl_value ) ) {
1757 op->o_tmpfree( ctrls[ 0 ]->ldctl_value.bv_val, op->o_tmpmemctx );
1760 op->o_tmpfree( ctrls, op->o_tmpmemctx );