1 /* bind.c - ldap backend bind function */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1999-2006 The OpenLDAP Foundation.
6 * Portions Copyright 2000-2003 Pierangelo Masarati.
7 * Portions Copyright 1999-2003 Howard Chu.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted only as authorized by the OpenLDAP
14 * A copy of this license is available in the file LICENSE in the
15 * top-level directory of the distribution or, alternatively, at
16 * <http://www.OpenLDAP.org/license.html>.
19 * This work was initially developed by Howard Chu for inclusion
20 * in OpenLDAP Software and subsequently enhanced by Pierangelo
29 #include <ac/socket.h>
30 #include <ac/string.h>
34 #include "back-ldap.h"
36 #include "lutil_ldap.h"
38 #ifndef PRINT_CONNTREE
39 #define PRINT_CONNTREE 0
40 #endif /* !PRINT_CONNTREE */
42 #define LDAP_CONTROL_OBSOLETE_PROXY_AUTHZ "2.16.840.1.113730.3.4.12"
44 #if PRINT_CONNTREE > 0
46 ravl_print( Avlnode *root, int depth )
55 ravl_print( root->avl_right, depth+1 );
57 for ( i = 0; i < depth; i++ ) {
58 fprintf( stderr, "-" );
62 fprintf( stderr, "lc=%p local=\"%s\" conn=%p %s refcnt=%d\n",
64 lc->lc_local_ndn.bv_val ? lc->lc_local_ndn.bv_val : "",
66 avl_bf2str( root->avl_bf ), lc->lc_refcnt );
68 ravl_print( root->avl_left, depth+1 );
72 myprint( Avlnode *root, char *msg )
74 fprintf( stderr, "========> %s\n", msg );
77 fprintf( stderr, "\tNULL\n" );
80 ravl_print( root, 0 );
83 fprintf( stderr, "<======== %s\n", msg );
85 #endif /* PRINT_CONNTREE */
88 ldap_back_proxy_authz_bind( ldapconn_t *lc, Operation *op, SlapReply *rs, ldap_back_send_t sendok );
91 ldap_back_prepare_conn( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok );
94 ldap_back_conndnlc_cmp( const void *c1, const void *c2 );
97 ldap_back_bind( Operation *op, SlapReply *rs )
99 ldapinfo_t *li = (ldapinfo_t *) op->o_bd->be_private;
105 lc = ldap_back_getconn( op, rs, LDAP_BACK_BIND_SERR );
110 if ( !BER_BVISNULL( &lc->lc_bound_ndn ) ) {
111 ch_free( lc->lc_bound_ndn.bv_val );
112 BER_BVZERO( &lc->lc_bound_ndn );
114 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
116 /* method is always LDAP_AUTH_SIMPLE if we got here */
117 rs->sr_err = ldap_sasl_bind( lc->lc_ld, op->o_req_dn.bv_val,
119 &op->orb_cred, op->o_ctrls, NULL, &msgid );
120 rc = ldap_back_op_result( lc, op, rs, msgid, 0, LDAP_BACK_SENDERR );
122 if ( rc == LDAP_SUCCESS ) {
123 /* If defined, proxyAuthz will be used also when
124 * back-ldap is the authorizing backend; for this
125 * purpose, a successful bind is followed by a
126 * bind with the configured identity assertion */
127 /* NOTE: use with care */
128 if ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) {
129 ldap_back_proxy_authz_bind( lc, op, rs, LDAP_BACK_SENDERR );
130 if ( !LDAP_BACK_CONN_ISBOUND( lc ) ) {
136 /* rebind is now done inside ldap_back_proxy_authz_bind()
137 * in case of success */
138 LDAP_BACK_CONN_ISBOUND_SET( lc );
139 ber_dupbv( &lc->lc_bound_ndn, &op->o_req_ndn );
141 if ( LDAP_BACK_SAVECRED( li ) ) {
142 if ( !BER_BVISNULL( &lc->lc_cred ) ) {
143 memset( lc->lc_cred.bv_val, 0,
144 lc->lc_cred.bv_len );
146 ber_bvreplace( &lc->lc_cred, &op->orb_cred );
147 ldap_set_rebind_proc( lc->lc_ld, li->li_rebind_f, lc );
152 assert( lc->lc_binding == 1 );
155 /* must re-insert if local DN changed as result of bind */
156 if ( !LDAP_BACK_CONN_ISBOUND( lc )
157 || ( LDAP_BACK_CONN_ISBOUND( lc )
158 && !dn_match( &op->o_req_ndn, &lc->lc_local_ndn ) ) )
163 /* wait for all other ops to release the connection */
165 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
166 if ( lc->lc_refcnt > 1 ) {
167 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
168 ldap_pvt_thread_yield();
172 assert( lc->lc_refcnt == 1 );
173 tmplc = avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
174 ldap_back_conndnlc_cmp );
175 assert( tmplc == NULL || lc == tmplc );
177 /* delete all cached connections with the current connection */
178 if ( LDAP_BACK_SINGLECONN( li ) ) {
179 while ( ( tmplc = avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc, ldap_back_conn_cmp ) ) != NULL )
181 Debug( LDAP_DEBUG_TRACE,
182 "=>ldap_back_bind: destroying conn %ld (refcnt=%u)\n",
183 LDAP_BACK_PCONN_ID( lc->lc_conn ), lc->lc_refcnt, 0 );
185 if ( 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 #endif /* HAVE_TLS */
509 assert( lcp != NULL );
511 ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
512 rs->sr_err = ldap_initialize( &ld, li->li_uri );
513 ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
514 if ( rs->sr_err != LDAP_SUCCESS ) {
518 if ( li->li_urllist_f ) {
519 ldap_set_urllist_proc( ld, li->li_urllist_f, li->li_urllist_p );
522 /* Set LDAP version. This will always succeed: If the client
523 * bound with a particular version, then so can we.
525 if ( li->li_version != 0 ) {
526 version = li->li_version;
528 } else if ( op->o_protocol != 0 ) {
529 version = op->o_protocol;
532 /* assume it's an internal op; set to LDAPv3 */
533 version = LDAP_VERSION3;
535 ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION, (const void *)&version );
537 /* automatically chase referrals ("chase-referrals [{yes|no}]" statement) */
538 ldap_set_option( ld, LDAP_OPT_REFERRALS,
539 LDAP_BACK_CHASE_REFERRALS( li ) ? LDAP_OPT_ON : LDAP_OPT_OFF );
541 if ( li->li_network_timeout > 0 ) {
544 tv.tv_sec = li->li_network_timeout;
546 ldap_set_option( ld, LDAP_OPT_NETWORK_TIMEOUT, (const void *)&tv );
550 ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
551 rs->sr_err = ldap_back_start_tls( ld, op->o_protocol, &is_tls,
552 li->li_uri, li->li_flags, li->li_nretries, &rs->sr_text );
553 ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
554 if ( rs->sr_err != LDAP_SUCCESS ) {
555 ldap_unbind_ext( ld, NULL, NULL );
558 #endif /* HAVE_TLS */
560 if ( *lcp == NULL ) {
561 *lcp = (ldapconn_t *)ch_calloc( 1, sizeof( ldapconn_t ) );
562 (*lcp)->lc_flags = li->li_flags;
565 (*lcp)->lc_refcnt = 1;
566 (*lcp)->lc_binding = 1;
569 LDAP_BACK_CONN_ISTLS_SET( *lcp );
571 LDAP_BACK_CONN_ISTLS_CLEAR( *lcp );
573 #endif /* HAVE_TLS */
576 if ( rs->sr_err != LDAP_SUCCESS ) {
577 rs->sr_err = slap_map_api2result( rs );
578 if ( sendok & LDAP_BACK_SENDERR ) {
579 if ( rs->sr_text == NULL ) {
580 rs->sr_text = "ldap_initialize() failed";
582 send_ldap_result( op, rs );
587 if ( li->li_conn_ttl > 0 ) {
588 (*lcp)->lc_create_time = op->o_time;
596 ldap_back_getconn( Operation *op, SlapReply *rs, ldap_back_send_t sendok )
598 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
599 ldapconn_t *lc = NULL,
601 int refcnt = 1, binding = 1;
603 /* if the server is quarantined, and
604 * - the current interval did not expire yet, or
605 * - no more retries should occur,
606 * don't return the connection */
607 if ( li->li_isquarantined ) {
608 slap_retry_info_t *ri = &li->li_quarantine;
611 ldap_pvt_thread_mutex_lock( &li->li_quarantine_mutex );
612 if ( li->li_isquarantined == LDAP_BACK_FQ_YES ) {
613 dont_retry = ( ri->ri_num[ ri->ri_idx ] == SLAP_RETRYNUM_TAIL
614 || slap_get_time() < ri->ri_last + ri->ri_interval[ ri->ri_idx ] );
616 Debug( LDAP_DEBUG_ANY,
617 "%s: ldap_back_getconn quarantine "
618 "retry block #%d try #%d.\n",
619 op->o_log_prefix, ri->ri_idx, ri->ri_count );
620 li->li_isquarantined = LDAP_BACK_FQ_RETRYING;
623 ldap_pvt_thread_mutex_unlock( &li->li_quarantine_mutex );
626 rs->sr_err = LDAP_UNAVAILABLE;
627 if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
628 send_ldap_result( op, rs );
634 /* Internal searches are privileged and shared. So is root. */
635 if ( op->o_do_not_cache || be_isroot( op ) ) {
636 LDAP_BACK_CONN_ISPRIV_SET( &lc_curr );
637 lc_curr.lc_local_ndn = op->o_bd->be_rootndn;
638 lc_curr.lc_conn = LDAP_BACK_PCONN_SET( op );
641 lc_curr.lc_local_ndn = op->o_ndn;
642 /* Explicit binds must not be shared */
643 if ( op->o_tag == LDAP_REQ_BIND || SLAP_IS_AUTHZ_BACKEND( op ) ) {
644 lc_curr.lc_conn = op->o_conn;
647 lc_curr.lc_conn = LDAP_BACK_PCONN_SET( op );
651 /* Explicit Bind requests always get their own conn */
652 if ( !( sendok & LDAP_BACK_BINDING ) ) {
653 /* Searches for a ldapconn in the avl tree */
655 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
657 lc = (ldapconn_t *)avl_find( li->li_conninfo.lai_tree,
658 (caddr_t)&lc_curr, ldap_back_conndn_cmp );
660 /* Don't reuse connections while they're still binding */
661 if ( LDAP_BACK_CONN_BINDING( lc ) ) {
662 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
663 ldap_pvt_thread_yield();
667 refcnt = ++lc->lc_refcnt;
668 binding = ++lc->lc_binding;
670 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
673 /* Looks like we didn't get a bind. Open a new session... */
675 if ( ldap_back_prepare_conn( &lc, op, rs, sendok ) != LDAP_SUCCESS ) {
678 if ( sendok & LDAP_BACK_BINDING ) {
679 LDAP_BACK_CONN_BINDING_SET( lc );
681 lc->lc_conn = lc_curr.lc_conn;
682 ber_dupbv( &lc->lc_local_ndn, &lc_curr.lc_local_ndn );
684 if ( LDAP_BACK_CONN_ISPRIV( &lc_curr ) ) {
685 ber_dupbv( &lc->lc_cred, &li->li_acl_passwd );
686 ber_dupbv( &lc->lc_bound_ndn, &li->li_acl_authcDN );
687 LDAP_BACK_CONN_ISPRIV_SET( lc );
690 BER_BVZERO( &lc->lc_cred );
691 BER_BVZERO( &lc->lc_bound_ndn );
692 if ( !BER_BVISEMPTY( &op->o_ndn )
693 && SLAP_IS_AUTHZ_BACKEND( op ) )
695 ber_dupbv( &lc->lc_bound_ndn, &op->o_ndn );
700 /* if start TLS failed but it was not mandatory,
701 * check if the non-TLS connection was already
702 * in cache; in case, destroy the newly created
703 * connection and use the existing one */
704 if ( lc->lc_conn == LDAP_BACK_PCONN_TLS
705 && !ldap_tls_inplace( lc->lc_ld ) )
709 lc_curr.lc_conn = LDAP_BACK_PCONN;
710 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
711 tmplc = (ldapconn_t *)avl_find( li->li_conninfo.lai_tree,
712 (caddr_t)&lc_curr, ldap_back_conndn_cmp );
713 if ( tmplc != NULL ) {
714 refcnt = ++tmplc->lc_refcnt;
715 binding = ++tmplc->lc_binding;
716 ldap_back_conn_free( lc );
719 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
721 if ( tmplc != NULL ) {
725 #endif /* HAVE_TLS */
727 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
729 /* Inserts the newly created ldapconn in the avl tree */
730 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
732 assert( lc->lc_refcnt == 1 );
733 assert( lc->lc_binding == 1 );
734 rs->sr_err = avl_insert( &li->li_conninfo.lai_tree, (caddr_t)lc,
735 ldap_back_conndn_cmp, ldap_back_conndn_dup );
737 #if PRINT_CONNTREE > 0
738 myprint( li->li_conninfo.lai_tree, "ldap_back_getconn" );
739 #endif /* PRINT_CONNTREE */
741 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
743 Debug( LDAP_DEBUG_TRACE,
744 "=>ldap_back_getconn: conn %p inserted refcnt=%u binding=%u\n",
745 (void *)lc, refcnt, binding );
747 /* Err could be -1 in case a duplicate ldapconn is inserted */
748 switch ( rs->sr_err ) {
753 if ( !( sendok & LDAP_BACK_BINDING ) ) {
754 /* duplicate: free and try to get the newly created one */
757 /* taint connection, so that it'll be freed when released */
758 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
759 (void *)avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
760 ldap_back_conndnlc_cmp );
761 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
762 LDAP_BACK_CONN_TAINTED_SET( lc );
766 ldap_back_conn_free( lc );
767 rs->sr_err = LDAP_OTHER;
768 rs->sr_text = "proxy bind collision";
769 if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
770 send_ldap_result( op, rs );
779 if ( ( li->li_idle_timeout != 0 && op->o_time > lc->lc_time + li->li_idle_timeout )
780 || ( li->li_conn_ttl != 0 && op->o_time > lc->lc_create_time + li->li_conn_ttl ) )
784 /* let it be used, but taint/delete it so that
785 * no-one else can look it up any further */
786 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
787 (void *)avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
788 ldap_back_conndnlc_cmp );
789 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
790 LDAP_BACK_CONN_TAINTED_SET( lc );
793 if ( LogTest( LDAP_DEBUG_TRACE ) ) {
794 char buf[ SLAP_TEXT_BUFLEN ];
796 snprintf( buf, sizeof( buf ),
797 "conn %p fetched refcnt=%u binding=%u%s",
798 (void *)lc, refcnt, binding, expiring ? " expiring" : "" );
799 Debug( LDAP_DEBUG_TRACE,
800 "=>ldap_back_getconn: %s.\n", buf, 0, 0 );
806 #endif /* HAVE_TLS */
807 if ( li->li_idle_timeout && lc ) {
808 lc->lc_time = op->o_time;
815 ldap_back_release_conn_lock(
821 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
824 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
826 assert( lc->lc_refcnt > 0 );
827 LDAP_BACK_CONN_BINDING_CLEAR( lc );
829 if ( LDAP_BACK_CONN_TAINTED( lc ) ) {
830 ldap_back_freeconn( op, lc, 0 );
833 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
838 ldap_back_quarantine(
842 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
844 slap_retry_info_t *ri = &li->li_quarantine;
846 ldap_pvt_thread_mutex_lock( &li->li_quarantine_mutex );
848 if ( rs->sr_err == LDAP_UNAVAILABLE ) {
849 time_t new_last = slap_get_time();
851 switch ( li->li_isquarantined ) {
852 case LDAP_BACK_FQ_NO:
853 if ( ri->ri_last == new_last ) {
857 Debug( LDAP_DEBUG_ANY,
858 "%s: ldap_back_quarantine enter.\n",
859 op->o_log_prefix, 0, 0 );
865 case LDAP_BACK_FQ_RETRYING:
866 Debug( LDAP_DEBUG_ANY,
867 "%s: ldap_back_quarantine block #%d try #%d failed.\n",
868 op->o_log_prefix, ri->ri_idx, ri->ri_count );
871 if ( ri->ri_num[ ri->ri_idx ] != SLAP_RETRYNUM_FOREVER
872 && ri->ri_count == ri->ri_num[ ri->ri_idx ] )
883 li->li_isquarantined = LDAP_BACK_FQ_YES;
884 ri->ri_last = new_last;
886 } else if ( li->li_isquarantined != LDAP_BACK_FQ_NO ) {
887 Debug( LDAP_DEBUG_ANY,
888 "%s: ldap_back_quarantine exit.\n",
889 op->o_log_prefix, ri->ri_idx, ri->ri_count );
891 if ( li->li_quarantine_f ) {
892 (void)li->li_quarantine_f( li, li->li_quarantine_p );
897 li->li_isquarantined = LDAP_BACK_FQ_NO;
901 ldap_pvt_thread_mutex_unlock( &li->li_quarantine_mutex );
907 * Note: as the check for the value of lc->lc_bound was already here, I removed
908 * it from all the callers, and I made the function return the flag, so
909 * it can be used to simplify the check.
911 * Note: dolock indicates whether li->li_conninfo.lai_mutex must be locked or not
914 ldap_back_dobind_int(
918 ldap_back_send_t sendok,
922 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
927 assert( retries >= 0 );
931 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
934 if ( binding == 0 ) {
935 /* check if already bound */
936 rc = LDAP_BACK_CONN_ISBOUND( lc );
940 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
945 if ( LDAP_BACK_CONN_BINDING( lc ) ) {
946 /* if someone else is about to bind it, give up and retry */
948 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
950 ldap_pvt_thread_yield();
954 /* otherwise this thread will bind it */
955 LDAP_BACK_CONN_BINDING_SET( lc );
960 /* wait for pending operations to finish */
961 /* FIXME: may become a bottleneck! */
962 if ( lc->lc_refcnt != lc->lc_binding ) {
964 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
966 ldap_pvt_thread_yield();
971 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
975 * FIXME: we need to let clients use proxyAuthz
976 * otherwise we cannot do symmetric pools of servers;
977 * we have to live with the fact that a user can
978 * authorize itself as any ID that is allowed
979 * by the authzTo directive of the "proxyauthzdn".
982 * NOTE: current Proxy Authorization specification
983 * and implementation do not allow proxy authorization
984 * control to be provided with Bind requests
987 * if no bind took place yet, but the connection is bound
988 * and the "idassert-authcDN" (or other ID) is set,
989 * then bind as the asserting identity and explicitly
990 * add the proxyAuthz control to every operation with the
991 * dn bound to the connection as control value.
992 * This is done also if this is the authrizing backend,
993 * but the "override" flag is given to idassert.
994 * It allows to use SASL bind and yet proxyAuthz users
996 if ( op->o_conn != NULL &&
997 !op->o_do_not_cache &&
998 ( BER_BVISNULL( &lc->lc_bound_ndn ) ||
999 ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) ) )
1001 (void)ldap_back_proxy_authz_bind( lc, op, rs, sendok );
1005 #ifdef HAVE_CYRUS_SASL
1006 if ( LDAP_BACK_CONN_ISPRIV( lc )
1007 && li->li_acl_authmethod == LDAP_AUTH_SASL )
1009 void *defaults = NULL;
1011 if ( li->li_acl_secprops != NULL ) {
1012 rc = ldap_set_option( lc->lc_ld,
1013 LDAP_OPT_X_SASL_SECPROPS, li->li_acl_secprops );
1015 if ( rc != LDAP_OPT_SUCCESS ) {
1016 Debug( LDAP_DEBUG_ANY, "Error: ldap_set_option "
1017 "(SECPROPS,\"%s\") failed!\n",
1018 li->li_acl_secprops, 0, 0 );
1023 defaults = lutil_sasl_defaults( lc->lc_ld,
1024 li->li_acl_sasl_mech.bv_val,
1025 li->li_acl_sasl_realm.bv_val,
1026 li->li_acl_authcID.bv_val,
1027 li->li_acl_passwd.bv_val,
1030 rs->sr_err = ldap_sasl_interactive_bind_s( lc->lc_ld,
1031 li->li_acl_authcDN.bv_val,
1032 li->li_acl_sasl_mech.bv_val, NULL, NULL,
1033 LDAP_SASL_QUIET, lutil_sasl_interact,
1036 lutil_sasl_freedefs( defaults );
1038 rs->sr_err = slap_map_api2result( rs );
1039 if ( rs->sr_err != LDAP_SUCCESS ) {
1040 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1041 send_ldap_result( op, rs );
1044 LDAP_BACK_CONN_ISBOUND_SET( lc );
1047 if ( LDAP_BACK_QUARANTINE( li ) ) {
1048 ldap_back_quarantine( op, rs );
1053 #endif /* HAVE_CYRUS_SASL */
1056 rs->sr_err = ldap_sasl_bind( lc->lc_ld,
1057 BER_BVISNULL( &lc->lc_cred ) ? "" : lc->lc_bound_ndn.bv_val,
1058 LDAP_SASL_SIMPLE, &lc->lc_cred,
1059 NULL, NULL, &msgid );
1061 if ( rs->sr_err == LDAP_SERVER_DOWN ) {
1062 if ( retries != LDAP_BACK_RETRY_NEVER ) {
1064 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1067 assert( lc->lc_refcnt > 0 );
1068 if ( lc->lc_refcnt == 1 ) {
1069 ldap_unbind_ext( lc->lc_ld, NULL, NULL );
1072 /* lc here must be the regular lc, reset and ready for init */
1073 rs->sr_err = ldap_back_prepare_conn( &lc, op, rs, sendok );
1074 if ( rs->sr_err != LDAP_SUCCESS ) {
1081 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1084 if ( rs->sr_err == LDAP_SUCCESS ) {
1085 if ( retries > 0 ) {
1093 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1097 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1101 /* FIXME: one binding-- too many? */
1103 ldap_back_freeconn( op, lc, dolock );
1104 rs->sr_err = slap_map_api2result( rs );
1106 if ( LDAP_BACK_QUARANTINE( li ) ) {
1107 ldap_back_quarantine( op, rs );
1113 rc = ldap_back_op_result( lc, op, rs, msgid, 0, sendok );
1114 if ( rc == LDAP_SUCCESS ) {
1115 LDAP_BACK_CONN_ISBOUND_SET( lc );
1120 LDAP_BACK_CONN_BINDING_CLEAR( lc );
1121 rc = LDAP_BACK_CONN_ISBOUND( lc );
1123 ldap_back_release_conn_lock( op, rs, lc, dolock );
1130 ldap_back_dobind( ldapconn_t *lc, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
1132 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1134 return ldap_back_dobind_int( lc, op, rs, sendok, li->li_nretries, 1 );
1138 * ldap_back_default_rebind
1140 * This is a callback used for chasing referrals using the same
1141 * credentials as the original user on this session.
1144 ldap_back_default_rebind( LDAP *ld, LDAP_CONST char *url, ber_tag_t request,
1145 ber_int_t msgid, void *params )
1147 ldapconn_t *lc = (ldapconn_t *)params;
1150 /* ... otherwise we couldn't get here */
1151 assert( lc != NULL );
1153 if ( !ldap_tls_inplace( ld ) ) {
1154 int is_tls = LDAP_BACK_CONN_ISTLS( lc ),
1156 const char *text = NULL;
1158 rc = ldap_back_start_tls( ld, 0, &is_tls, url, lc->lc_flags,
1159 LDAP_BACK_RETRY_DEFAULT, &text );
1160 if ( rc != LDAP_SUCCESS ) {
1164 #endif /* HAVE_TLS */
1166 /* FIXME: add checks on the URL/identity? */
1168 return ldap_sasl_bind_s( ld,
1169 BER_BVISNULL( &lc->lc_cred ) ? "" : lc->lc_bound_ndn.bv_val,
1170 LDAP_SASL_SIMPLE, &lc->lc_cred, NULL, NULL, NULL );
1174 * ldap_back_default_urllist
1177 ldap_back_default_urllist(
1179 LDAPURLDesc **urllist,
1183 ldapinfo_t *li = (ldapinfo_t *)params;
1184 LDAPURLDesc **urltail;
1186 if ( urllist == url ) {
1187 return LDAP_SUCCESS;
1190 for ( urltail = &(*url)->lud_next; *urltail; urltail = &(*urltail)->lud_next )
1193 *urltail = *urllist;
1197 ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
1199 ch_free( li->li_uri );
1202 ldap_get_option( ld, LDAP_OPT_URI, (void *)&li->li_uri );
1203 ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
1205 return LDAP_SUCCESS;
1214 ldap_back_send_t sendok )
1216 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1218 /* default behavior */
1219 if ( LDAP_BACK_ABANDON( li ) ) {
1220 return ldap_abandon_ext( lc->lc_ld, msgid, NULL, NULL );
1223 if ( LDAP_BACK_IGNORE( li ) ) {
1224 return LDAP_SUCCESS;
1227 if ( LDAP_BACK_CANCEL( li ) ) {
1228 /* FIXME: asynchronous? */
1229 return ldap_cancel_s( lc->lc_ld, msgid, NULL, NULL );
1238 ldap_back_op_result(
1244 ldap_back_send_t sendok )
1246 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1251 LDAPControl **ctrls = NULL;
1253 #define ERR_OK(err) ((err) == LDAP_SUCCESS || (err) == LDAP_COMPARE_FALSE || (err) == LDAP_COMPARE_TRUE)
1256 rs->sr_matched = NULL;
1258 rs->sr_ctrls = NULL;
1260 /* if the error recorded in the reply corresponds
1261 * to a successful state, get the error from the
1262 * remote server response */
1263 if ( ERR_OK( rs->sr_err ) ) {
1266 LDAPMessage *res = NULL;
1269 tv.tv_sec = timeout;
1273 LDAP_BACK_TV_SET( &tv );
1277 /* if result parsing fails, note the failure reason */
1278 rc = ldap_result( lc->lc_ld, msgid, LDAP_MSG_ALL, &tv, &res );
1282 (void)ldap_back_cancel( lc, op, rs, msgid, sendok );
1283 rs->sr_err = op->o_protocol >= LDAP_VERSION3 ?
1284 LDAP_ADMINLIMIT_EXCEEDED : LDAP_OTHER;
1285 rs->sr_text = "Operation timed out";
1289 LDAP_BACK_TV_SET( &tv );
1290 ldap_pvt_thread_yield();
1294 ldap_get_option( lc->lc_ld, LDAP_OPT_ERROR_NUMBER,
1299 /* otherwise get the result; if it is not
1300 * LDAP_SUCCESS, record it in the reply
1301 * structure (this includes
1302 * LDAP_COMPARE_{TRUE|FALSE}) */
1304 rc = ldap_parse_result( lc->lc_ld, res, &rs->sr_err,
1305 &match, &text, &refs, &ctrls, 1 );
1307 if ( rc != LDAP_SUCCESS ) {
1310 if ( refs != NULL ) {
1313 for ( i = 0; refs[ i ] != NULL; i++ )
1315 rs->sr_ref = op->o_tmpalloc( sizeof( struct berval ) * ( i + 1 ),
1317 for ( i = 0; refs[ i ] != NULL; i++ ) {
1318 ber_str2bv( refs[ i ], 0, 0, &rs->sr_ref[ i ] );
1320 BER_BVZERO( &rs->sr_ref[ i ] );
1322 if ( ctrls != NULL ) {
1323 rs->sr_ctrls = ctrls;
1328 /* if the error in the reply structure is not
1329 * LDAP_SUCCESS, try to map it from client
1330 * to server error */
1331 if ( !ERR_OK( rs->sr_err ) ) {
1332 rs->sr_err = slap_map_api2result( rs );
1334 /* internal ops ( op->o_conn == NULL )
1335 * must not reply to client */
1336 if ( op->o_conn && !op->o_do_not_cache && match ) {
1338 /* record the (massaged) matched
1339 * DN into the reply structure */
1340 rs->sr_matched = match;
1344 if ( rs->sr_err == LDAP_UNAVAILABLE ) {
1345 if ( !( sendok & LDAP_BACK_RETRYING ) ) {
1346 if ( LDAP_BACK_QUARANTINE( li ) ) {
1347 ldap_back_quarantine( op, rs );
1349 if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
1350 send_ldap_result( op, rs );
1354 } else if ( op->o_conn &&
1355 ( ( ( sendok & LDAP_BACK_SENDOK ) && ERR_OK( rs->sr_err ) )
1356 || ( ( sendok & LDAP_BACK_SENDERR ) && rs->sr_err != LDAP_SUCCESS ) ) )
1358 send_ldap_result( op, rs );
1362 if ( rs->sr_matched != match ) {
1363 free( (char *)rs->sr_matched );
1365 rs->sr_matched = NULL;
1366 ldap_memfree( match );
1370 ldap_memfree( text );
1375 assert( refs != NULL );
1376 ber_memvfree( (void **)refs );
1377 op->o_tmpfree( rs->sr_ref, op->o_tmpmemctx );
1382 assert( rs->sr_ctrls != NULL );
1383 ldap_controls_free( ctrls );
1384 rs->sr_ctrls = NULL;
1387 return( ERR_OK( rs->sr_err ) ? LDAP_SUCCESS : rs->sr_err );
1390 /* return true if bound, false if failed */
1392 ldap_back_retry( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
1395 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1397 assert( lcp != NULL );
1398 assert( *lcp != NULL );
1400 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1402 if ( (*lcp)->lc_refcnt == 1 ) {
1403 ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
1404 Debug( LDAP_DEBUG_ANY,
1405 "%s ldap_back_retry: retrying URI=\"%s\" DN=\"%s\"\n",
1406 op->o_log_prefix, li->li_uri,
1407 BER_BVISNULL( &(*lcp)->lc_bound_ndn ) ?
1408 "" : (*lcp)->lc_bound_ndn.bv_val );
1409 ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
1411 ldap_unbind_ext( (*lcp)->lc_ld, NULL, NULL );
1412 (*lcp)->lc_ld = NULL;
1413 LDAP_BACK_CONN_ISBOUND_CLEAR( (*lcp) );
1415 /* lc here must be the regular lc, reset and ready for init */
1416 rc = ldap_back_prepare_conn( lcp, op, rs, sendok );
1417 if ( rc != LDAP_SUCCESS ) {
1419 /* freeit, because lc_refcnt == 1 */
1420 (void)ldap_back_conn_free( *lcp );
1424 rc = ldap_back_dobind_int( *lcp, op, rs, sendok, 0, 0 );
1425 if ( rc == 0 && *lcp != NULL ) {
1426 /* freeit, because lc_refcnt == 1 */
1427 (void)ldap_back_conn_free( *lcp );
1433 Debug( LDAP_DEBUG_TRACE,
1434 "ldap_back_retry: conn %p refcnt=%u unable to retry.\n",
1435 (void *)(*lcp), (*lcp)->lc_refcnt, 0 );
1437 LDAP_BACK_CONN_TAINTED_SET( *lcp );
1438 ldap_back_release_conn_lock( op, rs, *lcp, 0 );
1442 rs->sr_err = LDAP_UNAVAILABLE;
1443 rs->sr_text = "unable to retry";
1444 send_ldap_result( op, rs );
1448 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1454 ldap_back_proxy_authz_bind( ldapconn_t *lc, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
1456 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1457 struct berval binddn = slap_empty_bv;
1458 struct berval bindcred = slap_empty_bv;
1464 /* don't proxyAuthz if protocol is not LDAPv3 */
1465 switch ( li->li_version ) {
1470 if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
1476 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1477 if ( sendok & LDAP_BACK_SENDERR ) {
1478 send_ldap_result( op, rs );
1480 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1484 if ( op->o_tag == LDAP_REQ_BIND ) {
1485 ndn = op->o_req_ndn;
1487 } else if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
1488 ndn = op->o_conn->c_ndn;
1495 * FIXME: we need to let clients use proxyAuthz
1496 * otherwise we cannot do symmetric pools of servers;
1497 * we have to live with the fact that a user can
1498 * authorize itself as any ID that is allowed
1499 * by the authzTo directive of the "proxyauthzdn".
1502 * NOTE: current Proxy Authorization specification
1503 * and implementation do not allow proxy authorization
1504 * control to be provided with Bind requests
1507 * if no bind took place yet, but the connection is bound
1508 * and the "proxyauthzdn" is set, then bind as
1509 * "proxyauthzdn" and explicitly add the proxyAuthz
1510 * control to every operation with the dn bound
1511 * to the connection as control value.
1514 /* bind as proxyauthzdn only if no idassert mode
1515 * is requested, or if the client's identity
1517 switch ( li->li_idassert_mode ) {
1518 case LDAP_BACK_IDASSERT_LEGACY:
1519 if ( !BER_BVISNULL( &ndn ) && !BER_BVISEMPTY( &ndn ) ) {
1520 if ( !BER_BVISNULL( &li->li_idassert_authcDN ) && !BER_BVISEMPTY( &li->li_idassert_authcDN ) )
1522 binddn = li->li_idassert_authcDN;
1523 bindcred = li->li_idassert_passwd;
1530 /* NOTE: rootdn can always idassert */
1531 if ( BER_BVISNULL( &ndn ) && li->li_idassert_authz == NULL ) {
1532 if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
1533 rs->sr_err = LDAP_INAPPROPRIATE_AUTH;
1534 if ( sendok & LDAP_BACK_SENDERR ) {
1535 send_ldap_result( op, rs );
1537 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1540 rs->sr_err = LDAP_SUCCESS;
1541 binddn = slap_empty_bv;
1542 bindcred = slap_empty_bv;
1548 } else if ( li->li_idassert_authz && !be_isroot( op ) ) {
1549 struct berval authcDN;
1551 if ( BER_BVISNULL( &ndn ) ) {
1552 authcDN = slap_empty_bv;
1557 rs->sr_err = slap_sasl_matches( op, li->li_idassert_authz,
1558 &authcDN, &authcDN );
1559 if ( rs->sr_err != LDAP_SUCCESS ) {
1560 if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
1561 if ( sendok & LDAP_BACK_SENDERR ) {
1562 send_ldap_result( op, rs );
1564 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1567 rs->sr_err = LDAP_SUCCESS;
1568 binddn = slap_empty_bv;
1569 bindcred = slap_empty_bv;
1577 binddn = li->li_idassert_authcDN;
1578 bindcred = li->li_idassert_passwd;
1583 if ( dobind && li->li_idassert_authmethod == LDAP_AUTH_SASL ) {
1584 #ifdef HAVE_CYRUS_SASL
1585 void *defaults = NULL;
1586 struct berval authzID = BER_BVNULL;
1589 /* if SASL supports native authz, prepare for it */
1590 if ( ( !op->o_do_not_cache || !op->o_is_auth_check ) &&
1591 ( li->li_idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) )
1593 switch ( li->li_idassert_mode ) {
1594 case LDAP_BACK_IDASSERT_OTHERID:
1595 case LDAP_BACK_IDASSERT_OTHERDN:
1596 authzID = li->li_idassert_authzID;
1599 case LDAP_BACK_IDASSERT_ANONYMOUS:
1600 BER_BVSTR( &authzID, "dn:" );
1603 case LDAP_BACK_IDASSERT_SELF:
1604 if ( BER_BVISNULL( &ndn ) ) {
1605 /* connection is not authc'd, so don't idassert */
1606 BER_BVSTR( &authzID, "dn:" );
1609 authzID.bv_len = STRLENOF( "dn:" ) + ndn.bv_len;
1610 authzID.bv_val = slap_sl_malloc( authzID.bv_len + 1, op->o_tmpmemctx );
1611 AC_MEMCPY( authzID.bv_val, "dn:", STRLENOF( "dn:" ) );
1612 AC_MEMCPY( authzID.bv_val + STRLENOF( "dn:" ),
1613 ndn.bv_val, ndn.bv_len + 1 );
1622 if ( li->li_idassert_secprops != NULL ) {
1623 rs->sr_err = ldap_set_option( lc->lc_ld,
1624 LDAP_OPT_X_SASL_SECPROPS,
1625 (void *)li->li_idassert_secprops );
1627 if ( rs->sr_err != LDAP_OPT_SUCCESS ) {
1628 rs->sr_err = LDAP_OTHER;
1629 if ( sendok & LDAP_BACK_SENDERR ) {
1630 send_ldap_result( op, rs );
1632 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1637 defaults = lutil_sasl_defaults( lc->lc_ld,
1638 li->li_idassert_sasl_mech.bv_val,
1639 li->li_idassert_sasl_realm.bv_val,
1640 li->li_idassert_authcID.bv_val,
1641 li->li_idassert_passwd.bv_val,
1644 rs->sr_err = ldap_sasl_interactive_bind_s( lc->lc_ld, binddn.bv_val,
1645 li->li_idassert_sasl_mech.bv_val, NULL, NULL,
1646 LDAP_SASL_QUIET, lutil_sasl_interact,
1649 rs->sr_err = slap_map_api2result( rs );
1650 if ( rs->sr_err != LDAP_SUCCESS ) {
1651 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1652 if ( sendok & LDAP_BACK_SENDERR ) {
1653 send_ldap_result( op, rs );
1657 LDAP_BACK_CONN_ISBOUND_SET( lc );
1660 lutil_sasl_freedefs( defaults );
1662 slap_sl_free( authzID.bv_val, op->o_tmpmemctx );
1666 #endif /* HAVE_CYRUS_SASL */
1669 switch ( li->li_idassert_authmethod ) {
1670 case LDAP_AUTH_NONE:
1671 BER_BVSTR( &binddn, "" );
1672 BER_BVSTR( &bindcred, "" );
1675 case LDAP_AUTH_SIMPLE:
1676 rs->sr_err = ldap_sasl_bind( lc->lc_ld,
1677 binddn.bv_val, LDAP_SASL_SIMPLE,
1678 &bindcred, NULL, NULL, &msgid );
1679 rc = ldap_back_op_result( lc, op, rs, msgid, 0, sendok );
1684 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1685 rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
1686 if ( sendok & LDAP_BACK_SENDERR ) {
1687 send_ldap_result( op, rs );
1692 if ( rc == LDAP_SUCCESS ) {
1693 /* set rebind stuff in case of successful proxyAuthz bind,
1694 * so that referral chasing is attempted using the right
1696 LDAP_BACK_CONN_ISBOUND_SET( lc );
1697 ber_dupbv( &lc->lc_bound_ndn, &binddn );
1699 if ( LDAP_BACK_SAVECRED( li ) ) {
1700 if ( !BER_BVISNULL( &lc->lc_cred ) ) {
1701 memset( lc->lc_cred.bv_val, 0,
1702 lc->lc_cred.bv_len );
1704 ber_bvreplace( &lc->lc_cred, &bindcred );
1705 ldap_set_rebind_proc( lc->lc_ld, li->li_rebind_f, lc );
1709 return LDAP_BACK_CONN_ISBOUND( lc );
1713 * ldap_back_proxy_authz_ctrl() prepends a proxyAuthz control
1714 * to existing server-side controls if required; if not,
1715 * the existing server-side controls are placed in *pctrls.
1716 * The caller, after using the controls in client API
1717 * operations, if ( *pctrls != op->o_ctrls ), should
1718 * free( (*pctrls)[ 0 ] ) and free( *pctrls ).
1719 * The function returns success if the control could
1720 * be added if required, or if it did nothing; in the future,
1721 * it might return some error if it failed.
1723 * if no bind took place yet, but the connection is bound
1724 * and the "proxyauthzdn" is set, then bind as "proxyauthzdn"
1725 * and explicitly add proxyAuthz the control to every operation
1726 * with the dn bound to the connection as control value.
1728 * If no server-side controls are defined for the operation,
1729 * simply add the proxyAuthz control; otherwise, if the
1730 * proxyAuthz control is not already set, add it as
1733 * FIXME: is controls order significant for security?
1734 * ANSWER: controls ordering and interoperability
1735 * must be indicated by the specs of each control; if none
1736 * is specified, the order is irrelevant.
1739 ldap_back_proxy_authz_ctrl(
1740 struct berval *bound_ndn,
1742 slap_idassert_t *si,
1745 LDAPControl ***pctrls )
1747 LDAPControl **ctrls = NULL;
1749 slap_idassert_mode_t mode;
1750 struct berval assertedID,
1755 rs->sr_err = LDAP_SUCCESS;
1757 /* don't proxyAuthz if protocol is not LDAPv3 */
1758 switch ( version ) {
1763 if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
1772 /* FIXME: SASL/EXTERNAL over ldapi:// doesn't honor the authcID,
1773 * but if it is not set this test fails. We need a different
1774 * means to detect if idassert is enabled */
1775 if ( ( BER_BVISNULL( &si->si_bc.sb_authcId ) || BER_BVISEMPTY( &si->si_bc.sb_authcId ) )
1776 && ( BER_BVISNULL( &si->si_bc.sb_binddn ) || BER_BVISEMPTY( &si->si_bc.sb_binddn ) ) )
1781 if ( !op->o_conn || op->o_do_not_cache || be_isroot( op ) ) {
1785 if ( op->o_tag == LDAP_REQ_BIND ) {
1786 ndn = op->o_req_ndn;
1788 } else if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
1789 ndn = op->o_conn->c_ndn;
1795 if ( si->si_mode == LDAP_BACK_IDASSERT_LEGACY ) {
1796 if ( op->o_proxy_authz ) {
1798 * FIXME: we do not want to perform proxyAuthz
1799 * on behalf of the client, because this would
1800 * be performed with "proxyauthzdn" privileges.
1802 * This might actually be too strict, since
1803 * the "proxyauthzdn" authzTo, and each entry's
1804 * authzFrom attributes may be crafted
1805 * to avoid unwanted proxyAuthz to take place.
1808 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1809 rs->sr_text = "proxyAuthz not allowed within namingContext";
1814 if ( !BER_BVISNULL( bound_ndn ) ) {
1818 if ( BER_BVISNULL( &ndn ) ) {
1822 if ( BER_BVISNULL( &si->si_bc.sb_binddn ) ) {
1826 } else if ( si->si_bc.sb_method == LDAP_AUTH_SASL ) {
1827 if ( ( si->si_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) )
1829 /* already asserted in SASL via native authz */
1833 } else if ( si->si_authz && !be_isroot( op ) ) {
1835 struct berval authcDN;
1837 if ( BER_BVISNULL( &ndn ) ) {
1838 authcDN = slap_empty_bv;
1842 rc = slap_sasl_matches( op, si->si_authz,
1843 &authcDN, & authcDN );
1844 if ( rc != LDAP_SUCCESS ) {
1845 if ( si->si_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
1846 /* ndn is not authorized
1847 * to use idassert */
1854 if ( op->o_proxy_authz ) {
1857 * 1) ignore the already set proxyAuthz control
1858 * 2) leave it in place, and don't set ours
1860 * 4) reject the operation
1862 * option (4) is very drastic
1863 * option (3) will make the remote server reject
1864 * the operation, thus being equivalent to (4)
1865 * option (2) will likely break the idassert
1866 * assumptions, so we cannot accept it;
1867 * option (1) means that we are contradicting
1868 * the client's reques.
1870 * I think (4) is the only correct choice.
1872 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1873 rs->sr_text = "proxyAuthz not allowed within namingContext";
1876 if ( op->o_is_auth_check ) {
1877 mode = LDAP_BACK_IDASSERT_NOASSERT;
1884 case LDAP_BACK_IDASSERT_SELF:
1885 if ( BER_BVISNULL( &ndn ) ) {
1891 case LDAP_BACK_IDASSERT_LEGACY:
1892 /* original behavior:
1893 * assert the client's identity */
1894 if ( BER_BVISNULL( &ndn ) ) {
1895 assertedID = slap_empty_bv;
1901 case LDAP_BACK_IDASSERT_ANONYMOUS:
1902 /* assert "anonymous" */
1903 assertedID = slap_empty_bv;
1906 case LDAP_BACK_IDASSERT_NOASSERT:
1907 /* don't assert; bind as proxyauthzdn */
1910 case LDAP_BACK_IDASSERT_OTHERID:
1911 case LDAP_BACK_IDASSERT_OTHERDN:
1912 /* assert idassert DN */
1913 assertedID = si->si_bc.sb_authzId;
1920 if ( BER_BVISNULL( &assertedID ) ) {
1921 assertedID = slap_empty_bv;
1924 /* don't idassert the bound DN (ITS#4497) */
1925 if ( dn_match( &assertedID, bound_ndn ) ) {
1929 if ( op->o_ctrls ) {
1930 for ( i = 0; op->o_ctrls[ i ]; i++ )
1931 /* just count ctrls */ ;
1934 ctrls = op->o_tmpalloc( sizeof( LDAPControl * ) * (i + 2) + sizeof( LDAPControl ),
1936 ctrls[ 0 ] = (LDAPControl *)&ctrls[ i + 2 ];
1938 ctrls[ 0 ]->ldctl_oid = LDAP_CONTROL_PROXY_AUTHZ;
1939 ctrls[ 0 ]->ldctl_iscritical = 1;
1941 switch ( si->si_mode ) {
1942 /* already in u:ID or dn:DN form */
1943 case LDAP_BACK_IDASSERT_OTHERID:
1944 case LDAP_BACK_IDASSERT_OTHERDN:
1945 ber_dupbv_x( &ctrls[ 0 ]->ldctl_value, &assertedID, op->o_tmpmemctx );
1948 /* needs the dn: prefix */
1950 ctrls[ 0 ]->ldctl_value.bv_len = assertedID.bv_len + STRLENOF( "dn:" );
1951 ctrls[ 0 ]->ldctl_value.bv_val = op->o_tmpalloc( ctrls[ 0 ]->ldctl_value.bv_len + 1,
1953 AC_MEMCPY( ctrls[ 0 ]->ldctl_value.bv_val, "dn:", STRLENOF( "dn:" ) );
1954 AC_MEMCPY( &ctrls[ 0 ]->ldctl_value.bv_val[ STRLENOF( "dn:" ) ],
1955 assertedID.bv_val, assertedID.bv_len + 1 );
1959 /* Older versions of <draft-weltman-ldapv3-proxy> required
1960 * to encode the value of the authzID (and called it proxyDN);
1961 * this hack provides compatibility with those DSAs that
1962 * implement it this way */
1963 if ( si->si_flags & LDAP_BACK_AUTH_OBSOLETE_ENCODING_WORKAROUND ) {
1964 struct berval authzID = ctrls[ 0 ]->ldctl_value;
1965 BerElementBuffer berbuf;
1966 BerElement *ber = (BerElement *)&berbuf;
1969 ber_init2( ber, 0, LBER_USE_DER );
1970 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
1972 tag = ber_printf( ber, "O", &authzID );
1973 if ( tag == LBER_ERROR ) {
1974 rs->sr_err = LDAP_OTHER;
1978 if ( ber_flatten2( ber, &ctrls[ 0 ]->ldctl_value, 1 ) == -1 ) {
1979 rs->sr_err = LDAP_OTHER;
1984 op->o_tmpfree( authzID.bv_val, op->o_tmpmemctx );
1985 ber_free_buf( ber );
1987 if ( rs->sr_err != LDAP_SUCCESS ) {
1988 op->o_tmpfree( ctrls, op->o_tmpmemctx );
1993 } else if ( si->si_flags & LDAP_BACK_AUTH_OBSOLETE_PROXY_AUTHZ ) {
1994 struct berval authzID = ctrls[ 0 ]->ldctl_value,
1996 BerElementBuffer berbuf;
1997 BerElement *ber = (BerElement *)&berbuf;
2000 if ( strncasecmp( authzID.bv_val, "dn:", STRLENOF( "dn:" ) ) != 0 ) {
2001 op->o_tmpfree( ctrls[ 0 ]->ldctl_value.bv_val, op->o_tmpmemctx );
2002 op->o_tmpfree( ctrls, op->o_tmpmemctx );
2004 rs->sr_err = LDAP_PROTOCOL_ERROR;
2009 tmp.bv_val += STRLENOF( "dn:" );
2010 tmp.bv_len -= STRLENOF( "dn:" );
2012 ber_init2( ber, 0, LBER_USE_DER );
2013 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
2015 /* apparently, Mozilla API encodes this
2016 * as "SEQUENCE { LDAPDN }" */
2017 tag = ber_printf( ber, "{O}", &tmp );
2018 if ( tag == LBER_ERROR ) {
2019 rs->sr_err = LDAP_OTHER;
2023 if ( ber_flatten2( ber, &ctrls[ 0 ]->ldctl_value, 1 ) == -1 ) {
2024 rs->sr_err = LDAP_OTHER;
2029 op->o_tmpfree( authzID.bv_val, op->o_tmpmemctx );
2030 ber_free_buf( ber );
2032 if ( rs->sr_err != LDAP_SUCCESS ) {
2033 op->o_tmpfree( ctrls, op->o_tmpmemctx );
2038 ctrls[ 0 ]->ldctl_oid = LDAP_CONTROL_OBSOLETE_PROXY_AUTHZ;
2041 if ( op->o_ctrls ) {
2042 for ( i = 0; op->o_ctrls[ i ]; i++ ) {
2043 ctrls[ i + 1 ] = op->o_ctrls[ i ];
2046 ctrls[ i + 1 ] = NULL;
2049 if ( ctrls == NULL ) {
2050 ctrls = op->o_ctrls;
2059 ldap_back_proxy_authz_ctrl_free( Operation *op, LDAPControl ***pctrls )
2061 LDAPControl **ctrls = *pctrls;
2063 /* we assume that the first control is the proxyAuthz
2064 * added by back-ldap, so it's the only one we explicitly
2066 if ( ctrls && ctrls != op->o_ctrls ) {
2067 assert( ctrls[ 0 ] != NULL );
2069 if ( !BER_BVISNULL( &ctrls[ 0 ]->ldctl_value ) ) {
2070 op->o_tmpfree( ctrls[ 0 ]->ldctl_value.bv_val, op->o_tmpmemctx );
2073 op->o_tmpfree( ctrls, op->o_tmpmemctx );