1 /* bind.c - ldap backend bind function */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1999-2017 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 #define LDAP_CONTROL_OBSOLETE_PROXY_AUTHZ "2.16.840.1.113730.3.4.12"
41 #define SLAP_AUTH_DN 1
44 #if LDAP_BACK_PRINT_CONNTREE > 0
50 { LDAP_BACK_FCONN_ISBOUND, 'B' },
51 { LDAP_BACK_FCONN_ISANON, 'A' },
52 { LDAP_BACK_FCONN_ISPRIV, 'P' },
53 { LDAP_BACK_FCONN_ISTLS, 'T' },
54 { LDAP_BACK_FCONN_BINDING, 'X' },
55 { LDAP_BACK_FCONN_TAINTED, 'E' },
56 { LDAP_BACK_FCONN_ABANDON, 'N' },
57 { LDAP_BACK_FCONN_ISIDASR, 'S' },
58 { LDAP_BACK_FCONN_CACHED, 'C' },
63 ldap_back_conn_print( ldapconn_t *lc, const char *avlstr )
65 char buf[ SLAP_TEXT_BUFLEN ];
66 char fbuf[ sizeof("BAPTIENSC") ];
69 ldap_back_conn2str( &lc->lc_base, buf, sizeof( buf ) );
70 for ( i = 0; flagsmap[ i ].c != '\0'; i++ ) {
71 if ( lc->lc_lcflags & flagsmap[i].f ) {
72 fbuf[i] = flagsmap[i].c;
80 fprintf( stderr, "lc=%p %s %s flags=0x%08x (%s)\n",
81 (void *)lc, buf, avlstr, lc->lc_lcflags, fbuf );
85 ldap_back_ravl_print( Avlnode *root, int depth )
94 ldap_back_ravl_print( root->avl_right, depth+1 );
96 for ( i = 0; i < depth; i++ ) {
97 fprintf( stderr, "-" );
101 ldap_back_conn_print( lc, avl_bf2str( root->avl_bf ) );
103 ldap_back_ravl_print( root->avl_left, depth + 1 );
106 static char* priv2str[] = {
117 ldap_back_print_conntree( ldapinfo_t *li, char *msg )
121 fprintf( stderr, "========> %s\n", msg );
123 for ( c = LDAP_BACK_PCONN_FIRST; c < LDAP_BACK_PCONN_LAST; c++ ) {
127 fprintf( stderr, " %s[%d]\n", priv2str[ c ], li->li_conn_priv[ c ].lic_num );
129 LDAP_TAILQ_FOREACH( lc, &li->li_conn_priv[ c ].lic_priv, lc_q )
131 fprintf( stderr, " [%d] ", i );
132 ldap_back_conn_print( lc, "" );
137 if ( li->li_conninfo.lai_tree == 0 ) {
138 fprintf( stderr, "\t(empty)\n" );
141 ldap_back_ravl_print( li->li_conninfo.lai_tree, 0 );
144 fprintf( stderr, "<======== %s\n", msg );
146 #endif /* LDAP_BACK_PRINT_CONNTREE */
149 ldap_back_freeconn( ldapinfo_t *li, ldapconn_t *lc, int dolock );
152 ldap_back_getconn( Operation *op, SlapReply *rs, ldap_back_send_t sendok,
153 struct berval *binddn, struct berval *bindcred );
156 ldap_back_is_proxy_authz( Operation *op, SlapReply *rs, ldap_back_send_t sendok,
157 struct berval *binddn, struct berval *bindcred );
160 ldap_back_proxy_authz_bind( ldapconn_t *lc, Operation *op, SlapReply *rs,
161 ldap_back_send_t sendok, struct berval *binddn, struct berval *bindcred );
164 ldap_back_prepare_conn( ldapconn_t *lc, Operation *op, SlapReply *rs,
165 ldap_back_send_t sendok );
168 ldap_back_conndnlc_cmp( const void *c1, const void *c2 );
171 ldap_back_conn_delete( ldapinfo_t *li, ldapconn_t *lc )
173 if ( LDAP_BACK_PCONN_ISPRIV( lc ) ) {
174 if ( LDAP_BACK_CONN_CACHED( lc ) ) {
175 assert( lc->lc_q.tqe_prev != NULL );
176 assert( li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_num > 0 );
177 li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_num--;
178 LDAP_TAILQ_REMOVE( &li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_priv, lc, lc_q );
179 LDAP_TAILQ_ENTRY_INIT( lc, lc_q );
180 LDAP_BACK_CONN_CACHED_CLEAR( lc );
183 assert( LDAP_BACK_CONN_TAINTED( lc ) );
184 assert( lc->lc_q.tqe_prev == NULL );
188 ldapconn_t *tmplc = NULL;
190 if ( LDAP_BACK_CONN_CACHED( lc ) ) {
191 assert( !LDAP_BACK_CONN_TAINTED( lc ) );
192 tmplc = avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
193 ldap_back_conndnlc_cmp );
194 assert( tmplc == lc );
195 LDAP_BACK_CONN_CACHED_CLEAR( lc );
198 assert( LDAP_BACK_CONN_TAINTED( lc ) || tmplc == lc );
205 ldap_back_bind( Operation *op, SlapReply *rs )
207 ldapinfo_t *li = (ldapinfo_t *) op->o_bd->be_private;
210 LDAPControl **ctrls = NULL;
211 struct berval save_o_dn;
212 int save_o_do_not_cache,
215 ldap_back_send_t retrying = LDAP_BACK_RETRYING;
217 /* allow rootdn as a means to auth without the need to actually
218 * contact the proxied DSA */
219 switch ( be_rootdn_bind( op, rs ) ) {
220 case SLAP_CB_CONTINUE:
227 lc = ldap_back_getconn( op, rs, LDAP_BACK_BIND_SERR, NULL, NULL );
232 /* we can do (almost) whatever we want with this conn,
233 * because either it's temporary, or it's marked as binding */
234 if ( !BER_BVISNULL( &lc->lc_bound_ndn ) ) {
235 ch_free( lc->lc_bound_ndn.bv_val );
236 BER_BVZERO( &lc->lc_bound_ndn );
238 if ( !BER_BVISNULL( &lc->lc_cred ) ) {
239 memset( lc->lc_cred.bv_val, 0, lc->lc_cred.bv_len );
240 ch_free( lc->lc_cred.bv_val );
241 BER_BVZERO( &lc->lc_cred );
243 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
245 /* don't add proxyAuthz; set the bindDN */
246 save_o_dn = op->o_dn;
247 save_o_do_not_cache = op->o_do_not_cache;
248 op->o_dn = op->o_req_dn;
249 op->o_do_not_cache = 1;
252 rc = ldap_back_controls_add( op, rs, lc, &ctrls );
253 op->o_dn = save_o_dn;
254 op->o_do_not_cache = save_o_do_not_cache;
255 if ( rc != LDAP_SUCCESS ) {
256 send_ldap_result( op, rs );
257 ldap_back_release_conn( li, lc );
262 /* method is always LDAP_AUTH_SIMPLE if we got here */
263 rs->sr_err = ldap_sasl_bind( lc->lc_ld, op->o_req_dn.bv_val,
265 &op->orb_cred, ctrls, NULL, &msgid );
266 /* FIXME: should we always retry, or only when piping the bind
267 * in the "override" connection pool? */
268 rc = ldap_back_op_result( lc, op, rs, msgid,
269 li->li_timeout[ SLAP_OP_BIND ],
270 LDAP_BACK_BIND_SERR | retrying );
271 if ( rc == LDAP_UNAVAILABLE && retrying ) {
272 retrying &= ~LDAP_BACK_RETRYING;
273 if ( ldap_back_retry( &lc, op, rs, LDAP_BACK_BIND_SERR ) ) {
280 ldap_pvt_thread_mutex_lock( &li->li_counter_mutex );
281 ldap_pvt_mp_add( li->li_ops_completed[ SLAP_OP_BIND ], 1 );
282 ldap_pvt_thread_mutex_unlock( &li->li_counter_mutex );
284 ldap_back_controls_free( op, rs, &ctrls );
286 if ( rc == LDAP_SUCCESS ) {
287 op->o_conn->c_authz_cookie = op->o_bd->be_private;
289 /* If defined, proxyAuthz will be used also when
290 * back-ldap is the authorizing backend; for this
291 * purpose, after a successful bind the connection
292 * is left for further binds, and further operations
293 * on this client connection will use a default
294 * connection with identity assertion */
295 /* NOTE: use with care */
296 if ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) {
297 ldap_back_release_conn( li, lc );
301 /* rebind is now done inside ldap_back_proxy_authz_bind()
302 * in case of success */
303 LDAP_BACK_CONN_ISBOUND_SET( lc );
304 ber_dupbv( &lc->lc_bound_ndn, &op->o_req_ndn );
306 if ( !BER_BVISNULL( &lc->lc_cred ) ) {
307 memset( lc->lc_cred.bv_val, 0,
308 lc->lc_cred.bv_len );
311 if ( LDAP_BACK_SAVECRED( li ) ) {
312 ber_bvreplace( &lc->lc_cred, &op->orb_cred );
313 ldap_set_rebind_proc( lc->lc_ld, li->li_rebind_f, lc );
316 lc->lc_cred.bv_len = 0;
320 /* must re-insert if local DN changed as result of bind */
321 if ( !LDAP_BACK_CONN_ISBOUND( lc )
322 || ( !dn_match( &op->o_req_ndn, &lc->lc_local_ndn )
323 && !LDAP_BACK_PCONN_ISPRIV( lc ) ) )
328 /* wait for all other ops to release the connection */
330 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
331 if ( lc->lc_refcnt > 1 ) {
332 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
333 ldap_pvt_thread_yield();
337 #if LDAP_BACK_PRINT_CONNTREE > 0
338 ldap_back_print_conntree( li, ">>> ldap_back_bind" );
339 #endif /* LDAP_BACK_PRINT_CONNTREE */
341 assert( lc->lc_refcnt == 1 );
342 ldap_back_conn_delete( li, lc );
344 /* delete all cached connections with the current connection */
345 if ( LDAP_BACK_SINGLECONN( li ) ) {
346 while ( ( tmplc = avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc, ldap_back_conn_cmp ) ) != NULL )
348 assert( !LDAP_BACK_PCONN_ISPRIV( lc ) );
349 Debug( LDAP_DEBUG_TRACE,
350 "=>ldap_back_bind: destroying conn %lu (refcnt=%u)\n",
351 lc->lc_conn->c_connid, lc->lc_refcnt, 0 );
353 if ( tmplc->lc_refcnt != 0 ) {
355 LDAP_BACK_CONN_TAINTED_SET( tmplc );
356 LDAP_BACK_CONN_CACHED_CLEAR( tmplc );
360 * Needs a test because the handler may be corrupted,
361 * and calling ldap_unbind on a corrupted header results
362 * in a segmentation fault
364 ldap_back_conn_free( tmplc );
369 if ( LDAP_BACK_CONN_ISBOUND( lc ) ) {
370 ber_bvreplace( &lc->lc_local_ndn, &op->o_req_ndn );
371 if ( be_isroot_dn( op->o_bd, &op->o_req_ndn ) ) {
372 LDAP_BACK_PCONN_ROOTDN_SET( lc, op );
374 lerr = avl_insert( &li->li_conninfo.lai_tree, (caddr_t)lc,
375 ldap_back_conndn_cmp, ldap_back_conndn_dup );
378 #if LDAP_BACK_PRINT_CONNTREE > 0
379 ldap_back_print_conntree( li, "<<< ldap_back_bind" );
380 #endif /* LDAP_BACK_PRINT_CONNTREE */
382 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
385 LDAP_BACK_CONN_CACHED_SET( lc );
389 /* duplicate; someone else successfully bound
390 * on the same connection with the same identity;
391 * we can do this because lc_refcnt == 1 */
392 ldap_back_conn_free( lc );
398 ldap_back_release_conn( li, lc );
405 * ldap_back_conndn_cmp
407 * compares two ldapconn_t based on the value of the conn pointer
408 * and of the local DN; used by avl stuff for insert, lookup
412 ldap_back_conndn_cmp( const void *c1, const void *c2 )
414 const ldapconn_t *lc1 = (const ldapconn_t *)c1;
415 const ldapconn_t *lc2 = (const ldapconn_t *)c2;
418 /* If local DNs don't match, it is definitely not a match */
419 /* For shared sessions, conn is NULL. Only explicitly
420 * bound sessions will have non-NULL conn.
422 rc = SLAP_PTRCMP( lc1->lc_conn, lc2->lc_conn );
424 rc = ber_bvcmp( &lc1->lc_local_ndn, &lc2->lc_local_ndn );
431 * ldap_back_conndnlc_cmp
433 * compares two ldapconn_t based on the value of the conn pointer,
434 * the local DN and the lc pointer; used by avl stuff for insert, lookup
438 ldap_back_conndnlc_cmp( const void *c1, const void *c2 )
440 const ldapconn_t *lc1 = (const ldapconn_t *)c1;
441 const ldapconn_t *lc2 = (const ldapconn_t *)c2;
444 /* If local DNs don't match, it is definitely not a match */
445 /* For shared sessions, conn is NULL. Only explicitly
446 * bound sessions will have non-NULL conn.
448 rc = SLAP_PTRCMP( lc1->lc_conn, lc2->lc_conn );
450 rc = ber_bvcmp( &lc1->lc_local_ndn, &lc2->lc_local_ndn );
452 rc = SLAP_PTRCMP( lc1, lc2 );
462 * compares two ldapconn_t based on the value of the conn pointer;
463 * used by avl stuff for delete of all conns with the same connid
466 ldap_back_conn_cmp( const void *c1, const void *c2 )
468 const ldapconn_t *lc1 = (const ldapconn_t *)c1;
469 const ldapconn_t *lc2 = (const ldapconn_t *)c2;
471 /* For shared sessions, conn is NULL. Only explicitly
472 * bound sessions will have non-NULL conn.
474 return SLAP_PTRCMP( lc1->lc_conn, lc2->lc_conn );
478 * ldap_back_conndn_dup
480 * returns -1 in case a duplicate ldapconn_t has been inserted;
484 ldap_back_conndn_dup( void *c1, void *c2 )
486 ldapconn_t *lc1 = (ldapconn_t *)c1;
487 ldapconn_t *lc2 = (ldapconn_t *)c2;
489 /* Cannot have more than one shared session with same DN */
490 if ( lc1->lc_conn == lc2->lc_conn &&
491 dn_match( &lc1->lc_local_ndn, &lc2->lc_local_ndn ) )
500 ldap_back_freeconn( ldapinfo_t *li, ldapconn_t *lc, int dolock )
503 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
506 #if LDAP_BACK_PRINT_CONNTREE > 0
507 ldap_back_print_conntree( li, ">>> ldap_back_freeconn" );
508 #endif /* LDAP_BACK_PRINT_CONNTREE */
510 (void)ldap_back_conn_delete( li, lc );
512 if ( lc->lc_refcnt == 0 ) {
513 ldap_back_conn_free( (void *)lc );
516 #if LDAP_BACK_PRINT_CONNTREE > 0
517 ldap_back_print_conntree( li, "<<< ldap_back_freeconn" );
518 #endif /* LDAP_BACK_PRINT_CONNTREE */
521 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
538 int rc = LDAP_SUCCESS;
540 /* start TLS ("tls-[try-]{start,propagate}" statements) */
541 if ( ( LDAP_BACK_USE_TLS_F( flags ) || ( *is_tls && LDAP_BACK_PROPAGATE_TLS_F( flags ) ) )
542 && !ldap_is_ldaps_url( url ) )
544 #ifdef SLAP_STARTTLS_ASYNCHRONOUS
546 * use asynchronous StartTLS
547 * in case, chase referral (not implemented yet)
551 if ( protocol == 0 ) {
552 ldap_get_option( ld, LDAP_OPT_PROTOCOL_VERSION,
556 if ( protocol < LDAP_VERSION3 ) {
557 /* we should rather bail out... */
558 rc = LDAP_UNWILLING_TO_PERFORM;
559 *text = "invalid protocol version";
562 if ( rc == LDAP_SUCCESS ) {
563 rc = ldap_start_tls( ld, NULL, NULL, &msgid );
566 if ( rc == LDAP_SUCCESS ) {
567 LDAPMessage *res = NULL;
574 LDAP_BACK_TV_SET( &tv );
576 rc = ldap_result( ld, msgid, LDAP_MSG_ALL, &tv, &res );
578 rc = LDAP_UNAVAILABLE;
580 } else if ( rc == LDAP_RES_EXTENDED ) {
581 struct berval *data = NULL;
583 rc = ldap_parse_extended_result( ld, res,
585 if ( rc == LDAP_SUCCESS ) {
587 rc = ldap_parse_result( ld, res, &rs.sr_err,
588 NULL, NULL, NULL, NULL, 1 );
589 if ( rc != LDAP_SUCCESS ) {
592 rc = slap_map_api2result( &rs );
595 /* FIXME: in case a referral
596 * is returned, should we try
597 * using it instead of the
599 if ( rc == LDAP_SUCCESS ) {
600 rc = ldap_install_tls( ld );
602 } else if ( rc == LDAP_REFERRAL ) {
603 rc = LDAP_UNWILLING_TO_PERFORM;
604 *text = "unwilling to chase referral returned by Start TLS exop";
608 if ( data->bv_val ) {
609 ber_memfree( data->bv_val );
623 #else /* ! SLAP_STARTTLS_ASYNCHRONOUS */
625 * use synchronous StartTLS
627 rc = ldap_start_tls_s( ld, NULL, NULL );
628 #endif /* ! SLAP_STARTTLS_ASYNCHRONOUS */
630 /* if StartTLS is requested, only attempt it if the URL
631 * is not "ldaps://"; this may occur not only in case
632 * of misconfiguration, but also when used in the chain
633 * overlay, where the "uri" can be parsed out of a referral */
639 case LDAP_SERVER_DOWN:
643 if ( LDAP_BACK_TLS_CRITICAL_F( flags ) ) {
644 *text = "could not start TLS";
648 /* in case Start TLS is not critical */
660 #endif /* HAVE_TLS */
663 ldap_back_prepare_conn( ldapconn_t *lc, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
665 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
669 int is_tls = op->o_conn->c_is_tls;
670 int flags = li->li_flags;
671 time_t lctime = (time_t)(-1);
673 #endif /* HAVE_TLS */
675 ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
676 rs->sr_err = ldap_initialize( &ld, li->li_uri );
677 ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
678 if ( rs->sr_err != LDAP_SUCCESS ) {
682 if ( li->li_urllist_f ) {
683 ldap_set_urllist_proc( ld, li->li_urllist_f, li->li_urllist_p );
686 /* Set LDAP version. This will always succeed: If the client
687 * bound with a particular version, then so can we.
689 if ( li->li_version != 0 ) {
690 version = li->li_version;
692 } else if ( op->o_protocol != 0 ) {
693 version = op->o_protocol;
696 /* assume it's an internal op; set to LDAPv3 */
697 version = LDAP_VERSION3;
699 ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION, (const void *)&version );
701 /* automatically chase referrals ("chase-referrals [{yes|no}]" statement) */
702 ldap_set_option( ld, LDAP_OPT_REFERRALS,
703 LDAP_BACK_CHASE_REFERRALS( li ) ? LDAP_OPT_ON : LDAP_OPT_OFF );
705 if ( li->li_network_timeout > 0 ) {
708 tv.tv_sec = li->li_network_timeout;
710 ldap_set_option( ld, LDAP_OPT_NETWORK_TIMEOUT, (const void *)&tv );
713 /* turn on network keepalive, if configured so */
714 slap_client_keepalive(ld, &li->li_tls.sb_keepalive);
717 if ( LDAP_BACK_CONN_ISPRIV( lc ) ) {
718 /* See "rationale" comment in ldap_back_getconn() */
719 if ( li->li_acl_authmethod == LDAP_AUTH_NONE &&
720 li->li_idassert_authmethod != LDAP_AUTH_NONE )
721 sb = &li->li_idassert.si_bc;
725 } else if ( LDAP_BACK_CONN_ISIDASSERT( lc ) ) {
726 sb = &li->li_idassert.si_bc;
732 if ( sb->sb_tls_do_init ) {
733 bindconf_tls_set( sb, ld );
734 } else if ( sb->sb_tls_ctx ) {
735 ldap_set_option( ld, LDAP_OPT_X_TLS_CTX, sb->sb_tls_ctx );
738 /* if required by the bindconf configuration, force TLS */
739 if ( ( sb == &li->li_acl || sb == &li->li_idassert.si_bc ) &&
742 flags |= LDAP_BACK_F_USE_TLS;
745 ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
746 assert( li->li_uri_mutex_do_not_lock == 0 );
747 li->li_uri_mutex_do_not_lock = 1;
748 rs->sr_err = ldap_back_start_tls( ld, op->o_protocol, &is_tls,
749 li->li_uri, flags, li->li_timeout[ SLAP_OP_EXTENDED ], &rs->sr_text );
750 li->li_uri_mutex_do_not_lock = 0;
751 ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
752 if ( rs->sr_err != LDAP_SUCCESS ) {
753 ldap_unbind_ext( ld, NULL, NULL );
754 rs->sr_text = "Start TLS failed";
757 } else if ( li->li_idle_timeout ) {
758 /* only touch when activity actually took place... */
761 #endif /* HAVE_TLS */
767 LDAP_BACK_CONN_ISTLS_SET( lc );
769 LDAP_BACK_CONN_ISTLS_CLEAR( lc );
771 if ( lctime != (time_t)(-1) ) {
772 lc->lc_time = lctime;
774 #endif /* HAVE_TLS */
777 if ( rs->sr_err != LDAP_SUCCESS ) {
778 rs->sr_err = slap_map_api2result( rs );
779 if ( sendok & LDAP_BACK_SENDERR ) {
780 if ( rs->sr_text == NULL ) {
781 rs->sr_text = "Proxy connection initialization failed";
783 send_ldap_result( op, rs );
787 if ( li->li_conn_ttl > 0 ) {
788 lc->lc_create_time = op->o_time;
799 ldap_back_send_t sendok,
800 struct berval *binddn,
801 struct berval *bindcred )
803 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
804 ldapconn_t *lc = NULL,
807 lookupconn = !( sendok & LDAP_BACK_BINDING );
809 /* if the server is quarantined, and
810 * - the current interval did not expire yet, or
811 * - no more retries should occur,
812 * don't return the connection */
813 if ( li->li_isquarantined ) {
814 slap_retry_info_t *ri = &li->li_quarantine;
817 if ( li->li_quarantine.ri_interval ) {
818 ldap_pvt_thread_mutex_lock( &li->li_quarantine_mutex );
819 if ( li->li_isquarantined == LDAP_BACK_FQ_YES ) {
820 dont_retry = ( ri->ri_num[ ri->ri_idx ] == SLAP_RETRYNUM_TAIL
821 || slap_get_time() < ri->ri_last + ri->ri_interval[ ri->ri_idx ] );
823 Debug( LDAP_DEBUG_ANY,
824 "%s: ldap_back_getconn quarantine "
825 "retry block #%d try #%d.\n",
826 op->o_log_prefix, ri->ri_idx, ri->ri_count );
827 li->li_isquarantined = LDAP_BACK_FQ_RETRYING;
830 ldap_pvt_thread_mutex_unlock( &li->li_quarantine_mutex );
834 rs->sr_err = LDAP_UNAVAILABLE;
835 if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
836 rs->sr_text = "Target is quarantined";
837 send_ldap_result( op, rs );
843 /* Internal searches are privileged and shared. So is root. */
844 if ( op->o_do_not_cache || be_isroot( op ) ) {
845 LDAP_BACK_CONN_ISPRIV_SET( &lc_curr );
846 lc_curr.lc_local_ndn = op->o_bd->be_rootndn;
847 LDAP_BACK_PCONN_ROOTDN_SET( &lc_curr, op );
850 struct berval tmpbinddn,
857 if ( binddn == NULL ) {
860 if ( bindcred == NULL ) {
861 bindcred = &tmpbindcred;
863 if ( op->o_tag == LDAP_REQ_BIND ) {
864 save_o_dn = op->o_dn;
865 save_o_ndn = op->o_ndn;
866 op->o_dn = op->o_req_dn;
867 op->o_ndn = op->o_req_ndn;
869 isproxyauthz = ldap_back_is_proxy_authz( op, rs, sendok, binddn, bindcred );
870 if ( op->o_tag == LDAP_REQ_BIND ) {
871 op->o_dn = save_o_dn;
872 op->o_ndn = save_o_ndn;
874 if ( isproxyauthz == -1 ) {
878 lc_curr.lc_local_ndn = op->o_ndn;
879 /* Explicit binds must not be shared;
880 * however, explicit binds are piped in a special connection
881 * when idassert is to occur with "override" set */
882 if ( op->o_tag == LDAP_REQ_BIND && !isproxyauthz ) {
883 lc_curr.lc_conn = op->o_conn;
886 if ( isproxyauthz && !( sendok & LDAP_BACK_BINDING ) ) {
887 lc_curr.lc_local_ndn = *binddn;
888 LDAP_BACK_PCONN_ROOTDN_SET( &lc_curr, op );
889 LDAP_BACK_CONN_ISIDASSERT_SET( &lc_curr );
891 } else if ( isproxyauthz && ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) ) {
892 lc_curr.lc_local_ndn = slap_empty_bv;
893 LDAP_BACK_PCONN_BIND_SET( &lc_curr, op );
894 LDAP_BACK_CONN_ISIDASSERT_SET( &lc_curr );
897 } else if ( SLAP_IS_AUTHZ_BACKEND( op ) ) {
898 lc_curr.lc_conn = op->o_conn;
901 LDAP_BACK_PCONN_ANON_SET( &lc_curr, op );
906 /* Explicit Bind requests always get their own conn */
909 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
910 if ( LDAP_BACK_PCONN_ISPRIV( &lc_curr ) ) {
911 /* lookup a conn that's not binding */
912 LDAP_TAILQ_FOREACH( lc,
913 &li->li_conn_priv[ LDAP_BACK_CONN2PRIV( &lc_curr ) ].lic_priv,
916 if ( !LDAP_BACK_CONN_BINDING( lc ) && lc->lc_refcnt == 0 ) {
922 if ( lc != LDAP_TAILQ_LAST( &li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_priv,
925 LDAP_TAILQ_REMOVE( &li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_priv,
927 LDAP_TAILQ_ENTRY_INIT( lc, lc_q );
928 LDAP_TAILQ_INSERT_TAIL( &li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_priv,
932 } else if ( !LDAP_BACK_USE_TEMPORARIES( li )
933 && li->li_conn_priv[ LDAP_BACK_CONN2PRIV( &lc_curr ) ].lic_num == li->li_conn_priv_max )
935 lc = LDAP_TAILQ_FIRST( &li->li_conn_priv[ LDAP_BACK_CONN2PRIV( &lc_curr ) ].lic_priv );
940 /* Searches for a ldapconn in the avl tree */
941 lc = (ldapconn_t *)avl_find( li->li_conninfo.lai_tree,
942 (caddr_t)&lc_curr, ldap_back_conndn_cmp );
946 /* Don't reuse connections while they're still binding */
947 if ( LDAP_BACK_CONN_BINDING( lc ) ) {
948 if ( !LDAP_BACK_USE_TEMPORARIES( li ) ) {
949 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
951 ldap_pvt_thread_yield();
958 if ( op->o_tag == LDAP_REQ_BIND ) {
959 /* right now, this is the only possible case */
960 assert( ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) );
961 LDAP_BACK_CONN_BINDING_SET( lc );
964 refcnt = ++lc->lc_refcnt;
967 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
970 /* Looks like we didn't get a bind. Open a new session... */
972 lc = (ldapconn_t *)ch_calloc( 1, sizeof( ldapconn_t ) );
973 lc->lc_flags = li->li_flags;
974 lc->lc_lcflags = lc_curr.lc_lcflags;
975 lc->lc_ldapinfo = li;
976 if ( ldap_back_prepare_conn( lc, op, rs, sendok ) != LDAP_SUCCESS ) {
981 if ( sendok & LDAP_BACK_BINDING ) {
982 LDAP_BACK_CONN_BINDING_SET( lc );
985 lc->lc_conn = lc_curr.lc_conn;
986 ber_dupbv( &lc->lc_local_ndn, &lc_curr.lc_local_ndn );
989 * the rationale is: connections as the rootdn are privileged,
990 * so li_acl is to be used; however, in some cases
991 * one already configured identity assertion with a highly
992 * privileged idassert_authcDN, so if li_acl is not configured
993 * and idassert is, use idassert instead.
995 * might change in the future, because it's preferable
996 * to make clear what identity is being used, since
997 * the only drawback is that one risks to configure
998 * the same identity twice...
1000 if ( LDAP_BACK_CONN_ISPRIV( &lc_curr ) ) {
1001 if ( li->li_acl_authmethod == LDAP_AUTH_NONE &&
1002 li->li_idassert_authmethod != LDAP_AUTH_NONE ) {
1003 ber_dupbv( &lc->lc_bound_ndn, &li->li_idassert_authcDN );
1004 ber_dupbv( &lc->lc_cred, &li->li_idassert_passwd );
1007 ber_dupbv( &lc->lc_bound_ndn, &li->li_acl_authcDN );
1008 ber_dupbv( &lc->lc_cred, &li->li_acl_passwd );
1010 LDAP_BACK_CONN_ISPRIV_SET( lc );
1012 } else if ( LDAP_BACK_CONN_ISIDASSERT( &lc_curr ) ) {
1013 if ( !LDAP_BACK_PCONN_ISBIND( &lc_curr ) ) {
1014 ber_dupbv( &lc->lc_bound_ndn, &li->li_idassert_authcDN );
1015 ber_dupbv( &lc->lc_cred, &li->li_idassert_passwd );
1017 LDAP_BACK_CONN_ISIDASSERT_SET( lc );
1020 BER_BVZERO( &lc->lc_cred );
1021 BER_BVZERO( &lc->lc_bound_ndn );
1022 if ( !BER_BVISEMPTY( &op->o_ndn )
1023 && SLAP_IS_AUTHZ_BACKEND( op ) )
1025 ber_dupbv( &lc->lc_bound_ndn, &op->o_ndn );
1030 /* if start TLS failed but it was not mandatory,
1031 * check if the non-TLS connection was already
1032 * in cache; in case, destroy the newly created
1033 * connection and use the existing one */
1034 if ( LDAP_BACK_PCONN_ISTLS( lc )
1035 && !ldap_tls_inplace( lc->lc_ld ) )
1037 ldapconn_t *tmplc = NULL;
1038 int idx = LDAP_BACK_CONN2PRIV( &lc_curr ) - 1;
1040 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1041 LDAP_TAILQ_FOREACH( tmplc,
1042 &li->li_conn_priv[ idx ].lic_priv,
1045 if ( !LDAP_BACK_CONN_BINDING( tmplc ) ) {
1050 if ( tmplc != NULL ) {
1051 refcnt = ++tmplc->lc_refcnt;
1052 ldap_back_conn_free( lc );
1055 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1057 if ( tmplc != NULL ) {
1061 #endif /* HAVE_TLS */
1063 /* Inserts the newly created ldapconn in the avl tree */
1064 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1066 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1067 lc->lc_connid = li->li_conn_nextid++;
1069 assert( lc->lc_refcnt == 1 );
1071 #if LDAP_BACK_PRINT_CONNTREE > 0
1072 ldap_back_print_conntree( li, ">>> ldap_back_getconn(insert)" );
1073 #endif /* LDAP_BACK_PRINT_CONNTREE */
1075 if ( LDAP_BACK_PCONN_ISPRIV( lc ) ) {
1076 if ( li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_num < li->li_conn_priv_max ) {
1077 LDAP_TAILQ_INSERT_TAIL( &li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_priv, lc, lc_q );
1078 li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_num++;
1079 LDAP_BACK_CONN_CACHED_SET( lc );
1082 LDAP_BACK_CONN_TAINTED_SET( lc );
1087 rs->sr_err = avl_insert( &li->li_conninfo.lai_tree, (caddr_t)lc,
1088 ldap_back_conndn_cmp, ldap_back_conndn_dup );
1089 LDAP_BACK_CONN_CACHED_SET( lc );
1092 #if LDAP_BACK_PRINT_CONNTREE > 0
1093 ldap_back_print_conntree( li, "<<< ldap_back_getconn(insert)" );
1094 #endif /* LDAP_BACK_PRINT_CONNTREE */
1096 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1098 if ( LogTest( LDAP_DEBUG_TRACE ) ) {
1099 char buf[ SLAP_TEXT_BUFLEN ];
1101 snprintf( buf, sizeof( buf ),
1102 "lc=%p inserted refcnt=%u rc=%d",
1103 (void *)lc, refcnt, rs->sr_err );
1105 Debug( LDAP_DEBUG_TRACE,
1106 "=>ldap_back_getconn: %s: %s\n",
1107 op->o_log_prefix, buf, 0 );
1110 if ( !LDAP_BACK_PCONN_ISPRIV( lc ) ) {
1111 /* Err could be -1 in case a duplicate ldapconn is inserted */
1112 switch ( rs->sr_err ) {
1117 LDAP_BACK_CONN_CACHED_CLEAR( lc );
1118 if ( !( sendok & LDAP_BACK_BINDING ) && !LDAP_BACK_USE_TEMPORARIES( li ) ) {
1119 /* duplicate: free and try to get the newly created one */
1120 ldap_back_conn_free( lc );
1125 /* taint connection, so that it'll be freed when released */
1126 LDAP_BACK_CONN_TAINTED_SET( lc );
1130 LDAP_BACK_CONN_CACHED_CLEAR( lc );
1131 ldap_back_conn_free( lc );
1132 rs->sr_err = LDAP_OTHER;
1133 rs->sr_text = "Proxy bind collision";
1134 if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
1135 send_ldap_result( op, rs );
1144 if ( ( li->li_idle_timeout != 0 && op->o_time > lc->lc_time + li->li_idle_timeout )
1145 || ( li->li_conn_ttl != 0 && op->o_time > lc->lc_create_time + li->li_conn_ttl ) )
1149 /* let it be used, but taint/delete it so that
1150 * no-one else can look it up any further */
1151 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1153 #if LDAP_BACK_PRINT_CONNTREE > 0
1154 ldap_back_print_conntree( li, ">>> ldap_back_getconn(timeout)" );
1155 #endif /* LDAP_BACK_PRINT_CONNTREE */
1157 (void)ldap_back_conn_delete( li, lc );
1158 LDAP_BACK_CONN_TAINTED_SET( lc );
1160 #if LDAP_BACK_PRINT_CONNTREE > 0
1161 ldap_back_print_conntree( li, "<<< ldap_back_getconn(timeout)" );
1162 #endif /* LDAP_BACK_PRINT_CONNTREE */
1164 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1167 if ( LogTest( LDAP_DEBUG_TRACE ) ) {
1168 char buf[ SLAP_TEXT_BUFLEN ];
1170 snprintf( buf, sizeof( buf ),
1171 "conn %p fetched refcnt=%u%s",
1173 expiring ? " expiring" : "" );
1174 Debug( LDAP_DEBUG_TRACE,
1175 "=>ldap_back_getconn: %s.\n", buf, 0, 0 );
1181 #endif /* HAVE_TLS */
1187 ldap_back_release_conn_lock(
1193 ldapconn_t *lc = *lcp;
1196 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1198 assert( lc->lc_refcnt > 0 );
1199 LDAP_BACK_CONN_BINDING_CLEAR( lc );
1201 if ( LDAP_BACK_CONN_TAINTED( lc ) ) {
1202 ldap_back_freeconn( li, lc, 0 );
1206 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1211 ldap_back_quarantine(
1215 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1217 slap_retry_info_t *ri = &li->li_quarantine;
1219 ldap_pvt_thread_mutex_lock( &li->li_quarantine_mutex );
1221 if ( rs->sr_err == LDAP_UNAVAILABLE ) {
1222 time_t new_last = slap_get_time();
1224 switch ( li->li_isquarantined ) {
1225 case LDAP_BACK_FQ_NO:
1226 if ( ri->ri_last == new_last ) {
1230 Debug( LDAP_DEBUG_ANY,
1231 "%s: ldap_back_quarantine enter.\n",
1232 op->o_log_prefix, 0, 0 );
1238 case LDAP_BACK_FQ_RETRYING:
1239 Debug( LDAP_DEBUG_ANY,
1240 "%s: ldap_back_quarantine block #%d try #%d failed.\n",
1241 op->o_log_prefix, ri->ri_idx, ri->ri_count );
1244 if ( ri->ri_num[ ri->ri_idx ] != SLAP_RETRYNUM_FOREVER
1245 && ri->ri_count == ri->ri_num[ ri->ri_idx ] )
1256 li->li_isquarantined = LDAP_BACK_FQ_YES;
1257 ri->ri_last = new_last;
1259 } else if ( li->li_isquarantined != LDAP_BACK_FQ_NO ) {
1260 if ( ri->ri_last == slap_get_time() ) {
1264 Debug( LDAP_DEBUG_ANY,
1265 "%s: ldap_back_quarantine exit (%d) err=%d.\n",
1266 op->o_log_prefix, li->li_isquarantined, rs->sr_err );
1268 if ( li->li_quarantine_f ) {
1269 (void)li->li_quarantine_f( li, li->li_quarantine_p );
1274 li->li_isquarantined = LDAP_BACK_FQ_NO;
1278 ldap_pvt_thread_mutex_unlock( &li->li_quarantine_mutex );
1282 ldap_back_dobind_cb(
1287 ber_tag_t *tptr = op->o_callback->sc_private;
1289 rs->sr_tag = slap_req2res( op->o_tag );
1291 return SLAP_CB_CONTINUE;
1295 * ldap_back_dobind_int
1297 * Note: dolock indicates whether li->li_conninfo.lai_mutex must be locked or not
1300 ldap_back_dobind_int(
1304 ldap_back_send_t sendok,
1308 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1311 struct berval binddn = slap_empty_bv,
1312 bindcred = slap_empty_bv;
1318 ber_tag_t o_tag = op->o_tag;
1319 slap_callback cb = {0};
1322 assert( lcp != NULL );
1323 assert( retries >= 0 );
1325 if ( sendok & LDAP_BACK_GETCONN ) {
1326 assert( *lcp == NULL );
1328 lc = ldap_back_getconn( op, rs, sendok, &binddn, &bindcred );
1338 assert( lc != NULL );
1342 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1345 if ( binding == 0 ) {
1346 /* check if already bound */
1347 rc = isbound = LDAP_BACK_CONN_ISBOUND( lc );
1350 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1355 if ( LDAP_BACK_CONN_BINDING( lc ) ) {
1356 /* if someone else is about to bind it, give up and retry */
1358 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1360 ldap_pvt_thread_yield();
1364 /* otherwise this thread will bind it */
1365 LDAP_BACK_CONN_BINDING_SET( lc );
1371 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1375 * FIXME: we need to let clients use proxyAuthz
1376 * otherwise we cannot do symmetric pools of servers;
1377 * we have to live with the fact that a user can
1378 * authorize itself as any ID that is allowed
1379 * by the authzTo directive of the "proxyauthzdn".
1382 * NOTE: current Proxy Authorization specification
1383 * and implementation do not allow proxy authorization
1384 * control to be provided with Bind requests
1387 * if no bind took place yet, but the connection is bound
1388 * and the "idassert-authcDN" (or other ID) is set,
1389 * then bind as the asserting identity and explicitly
1390 * add the proxyAuthz control to every operation with the
1391 * dn bound to the connection as control value.
1392 * This is done also if this is the authorizing backend,
1393 * but the "override" flag is given to idassert.
1394 * It allows to use SASL bind and yet proxyAuthz users
1396 op->o_tag = LDAP_REQ_BIND;
1397 cb.sc_next = op->o_callback;
1398 cb.sc_private = &o_tag;
1399 cb.sc_response = ldap_back_dobind_cb;
1400 op->o_callback = &cb;
1402 if ( LDAP_BACK_CONN_ISIDASSERT( lc ) ) {
1403 if ( BER_BVISEMPTY( &binddn ) && BER_BVISEMPTY( &bindcred ) ) {
1404 /* if we got here, it shouldn't return result */
1405 rc = ldap_back_is_proxy_authz( op, rs,
1406 LDAP_BACK_DONTSEND, &binddn, &bindcred );
1408 Debug( LDAP_DEBUG_ANY, "Error: ldap_back_is_proxy_authz "
1409 "returned %d, misconfigured URI?\n", rc, 0, 0 );
1410 rs->sr_err = LDAP_OTHER;
1411 rs->sr_text = "misconfigured URI?";
1412 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1413 if ( sendok & LDAP_BACK_SENDERR ) {
1414 send_ldap_result( op, rs );
1419 rc = ldap_back_proxy_authz_bind( lc, op, rs, sendok, &binddn, &bindcred );
1423 #ifdef HAVE_CYRUS_SASL
1424 if ( LDAP_BACK_CONN_ISPRIV( lc )) {
1426 if ( li->li_acl_authmethod != LDAP_AUTH_NONE )
1429 sb = &li->li_idassert.si_bc;
1431 if ( sb->sb_method == LDAP_AUTH_SASL ) {
1432 void *defaults = NULL;
1434 if ( sb->sb_secprops != NULL ) {
1435 rc = ldap_set_option( lc->lc_ld,
1436 LDAP_OPT_X_SASL_SECPROPS, sb->sb_secprops );
1438 if ( rc != LDAP_OPT_SUCCESS ) {
1439 Debug( LDAP_DEBUG_ANY, "Error: ldap_set_option "
1440 "(SECPROPS,\"%s\") failed!\n",
1441 sb->sb_secprops, 0, 0 );
1446 defaults = lutil_sasl_defaults( lc->lc_ld,
1447 sb->sb_saslmech.bv_val,
1448 sb->sb_realm.bv_val,
1449 sb->sb_authcId.bv_val,
1452 if ( defaults == NULL ) {
1453 rs->sr_err = LDAP_OTHER;
1454 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1455 if ( sendok & LDAP_BACK_SENDERR ) {
1456 send_ldap_result( op, rs );
1461 rs->sr_err = ldap_sasl_interactive_bind_s( lc->lc_ld,
1462 sb->sb_binddn.bv_val,
1463 sb->sb_saslmech.bv_val, NULL, NULL,
1464 LDAP_SASL_QUIET, lutil_sasl_interact,
1467 ldap_pvt_thread_mutex_lock( &li->li_counter_mutex );
1468 ldap_pvt_mp_add( li->li_ops_completed[ SLAP_OP_BIND ], 1 );
1469 ldap_pvt_thread_mutex_unlock( &li->li_counter_mutex );
1471 lutil_sasl_freedefs( defaults );
1473 switch ( rs->sr_err ) {
1475 LDAP_BACK_CONN_ISBOUND_SET( lc );
1478 case LDAP_LOCAL_ERROR:
1479 /* list client API error codes that require
1480 * to taint the connection */
1481 /* FIXME: should actually retry? */
1482 LDAP_BACK_CONN_TAINTED_SET( lc );
1487 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1488 rs->sr_err = slap_map_api2result( rs );
1489 if ( sendok & LDAP_BACK_SENDERR ) {
1490 send_ldap_result( op, rs );
1495 if ( LDAP_BACK_QUARANTINE( li ) ) {
1496 ldap_back_quarantine( op, rs );
1502 #endif /* HAVE_CYRUS_SASL */
1505 if ( BER_BVISNULL( &lc->lc_cred ) ) {
1507 if ( !BER_BVISNULL( &lc->lc_bound_ndn ) && !BER_BVISEMPTY( &lc->lc_bound_ndn ) ) {
1508 Debug( LDAP_DEBUG_ANY, "%s ldap_back_dobind_int: DN=\"%s\" without creds, binding anonymously",
1509 op->o_log_prefix, lc->lc_bound_ndn.bv_val, 0 );
1513 tmp_dn = lc->lc_bound_ndn.bv_val;
1515 rs->sr_err = ldap_sasl_bind( lc->lc_ld,
1517 LDAP_SASL_SIMPLE, &lc->lc_cred,
1518 NULL, NULL, &msgid );
1520 ldap_pvt_thread_mutex_lock( &li->li_counter_mutex );
1521 ldap_pvt_mp_add( li->li_ops_completed[ SLAP_OP_BIND ], 1 );
1522 ldap_pvt_thread_mutex_unlock( &li->li_counter_mutex );
1524 if ( rs->sr_err == LDAP_SERVER_DOWN ) {
1525 if ( retries != LDAP_BACK_RETRY_NEVER ) {
1527 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1530 assert( lc->lc_refcnt > 0 );
1531 if ( lc->lc_refcnt == 1 ) {
1532 ldap_unbind_ext( lc->lc_ld, NULL, NULL );
1535 /* lc here must be the regular lc, reset and ready for init */
1536 rs->sr_err = ldap_back_prepare_conn( lc, op, rs, sendok );
1537 if ( rs->sr_err != LDAP_SUCCESS ) {
1538 sendok &= ~LDAP_BACK_SENDERR;
1544 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1547 if ( rs->sr_err == LDAP_SUCCESS ) {
1548 if ( retries > 0 ) {
1555 assert( lc->lc_refcnt == 1 );
1557 ldap_back_freeconn( li, lc, dolock );
1559 rs->sr_err = slap_map_api2result( rs );
1561 if ( LDAP_BACK_QUARANTINE( li ) ) {
1562 ldap_back_quarantine( op, rs );
1565 if ( rs->sr_err != LDAP_SUCCESS &&
1566 ( sendok & LDAP_BACK_SENDERR ) )
1568 if ( op->o_callback == &cb )
1569 op->o_callback = cb.sc_next;
1571 rs->sr_text = "Proxy can't contact remote server";
1572 send_ldap_result( op, rs );
1573 /* if we originally bound and wanted rebind-as-user, must drop
1574 * the connection now because we just discarded the credentials.
1577 if ( LDAP_BACK_SAVECRED( li ) && SLAP_IS_AUTHZ_BACKEND( op ) )
1578 rs->sr_err = SLAPD_DISCONNECT;
1585 rc = ldap_back_op_result( lc, op, rs, msgid,
1586 -1, ( sendok | LDAP_BACK_BINDING ) );
1587 if ( rc == LDAP_SUCCESS ) {
1588 LDAP_BACK_CONN_ISBOUND_SET( lc );
1592 LDAP_BACK_CONN_BINDING_CLEAR( lc );
1593 rc = LDAP_BACK_CONN_ISBOUND( lc );
1595 ldap_back_release_conn_lock( li, lcp, dolock );
1597 } else if ( LDAP_BACK_SAVECRED( li ) ) {
1598 ldap_set_rebind_proc( lc->lc_ld, li->li_rebind_f, lc );
1602 if ( op->o_callback == &cb )
1603 op->o_callback = cb.sc_next;
1612 * Note: dolock indicates whether li->li_conninfo.lai_mutex must be locked or not
1615 ldap_back_dobind( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
1617 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1619 return ldap_back_dobind_int( lcp, op, rs,
1620 ( sendok | LDAP_BACK_GETCONN ), li->li_nretries, 1 );
1624 * ldap_back_default_rebind
1626 * This is a callback used for chasing referrals using the same
1627 * credentials as the original user on this session.
1630 ldap_back_default_rebind( LDAP *ld, LDAP_CONST char *url, ber_tag_t request,
1631 ber_int_t msgid, void *params )
1633 ldapconn_t *lc = (ldapconn_t *)params;
1636 /* ... otherwise we couldn't get here */
1637 assert( lc != NULL );
1639 if ( !ldap_tls_inplace( ld ) ) {
1640 int is_tls = LDAP_BACK_CONN_ISTLS( lc ),
1642 const char *text = NULL;
1644 rc = ldap_back_start_tls( ld, 0, &is_tls, url, lc->lc_flags,
1645 lc->lc_ldapinfo->li_timeout[ SLAP_OP_EXTENDED ], &text );
1646 if ( rc != LDAP_SUCCESS ) {
1650 #endif /* HAVE_TLS */
1652 /* FIXME: add checks on the URL/identity? */
1653 /* TODO: would like to count this bind operation for monitoring
1654 * too, but where do we get the ldapinfo_t? */
1656 return ldap_sasl_bind_s( ld,
1657 BER_BVISNULL( &lc->lc_cred ) ? "" : lc->lc_bound_ndn.bv_val,
1658 LDAP_SASL_SIMPLE, &lc->lc_cred, NULL, NULL, NULL );
1662 * ldap_back_default_urllist
1665 ldap_back_default_urllist(
1667 LDAPURLDesc **urllist,
1671 ldapinfo_t *li = (ldapinfo_t *)params;
1672 LDAPURLDesc **urltail;
1674 if ( urllist == url ) {
1675 return LDAP_SUCCESS;
1678 for ( urltail = &(*url)->lud_next; *urltail; urltail = &(*urltail)->lud_next )
1681 *urltail = *urllist;
1685 if ( !li->li_uri_mutex_do_not_lock ) {
1686 ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
1690 ch_free( li->li_uri );
1693 ldap_get_option( ld, LDAP_OPT_URI, (void *)&li->li_uri );
1695 if ( !li->li_uri_mutex_do_not_lock ) {
1696 ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
1699 return LDAP_SUCCESS;
1708 ldap_back_send_t sendok )
1710 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1712 /* default behavior */
1713 if ( LDAP_BACK_ABANDON( li ) ) {
1714 return ldap_abandon_ext( lc->lc_ld, msgid, NULL, NULL );
1717 if ( LDAP_BACK_IGNORE( li ) ) {
1718 return ldap_pvt_discard( lc->lc_ld, msgid );
1721 if ( LDAP_BACK_CANCEL( li ) ) {
1722 /* FIXME: asynchronous? */
1723 return ldap_cancel_s( lc->lc_ld, msgid, NULL, NULL );
1732 ldap_back_op_result(
1738 ldap_back_send_t sendok )
1740 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1745 LDAPControl **ctrls = NULL;
1748 rs->sr_matched = NULL;
1750 rs->sr_ctrls = NULL;
1752 /* if the error recorded in the reply corresponds
1753 * to a successful state, get the error from the
1754 * remote server response */
1755 if ( LDAP_ERR_OK( rs->sr_err ) ) {
1758 LDAPMessage *res = NULL;
1759 time_t stoptime = (time_t)(-1);
1760 int timeout_err = op->o_protocol >= LDAP_VERSION3 ?
1761 LDAP_ADMINLIMIT_EXCEEDED : LDAP_OTHER;
1762 const char *timeout_text = "Operation timed out";
1764 /* if timeout is not specified, compute and use
1765 * the one specific to the ongoing operation */
1766 if ( timeout == (time_t)(-1) ) {
1767 slap_op_t opidx = slap_req2op( op->o_tag );
1769 if ( opidx == SLAP_OP_SEARCH ) {
1770 if ( op->ors_tlimit <= 0 ) {
1774 timeout = op->ors_tlimit;
1775 timeout_err = LDAP_TIMELIMIT_EXCEEDED;
1776 timeout_text = NULL;
1780 timeout = li->li_timeout[ opidx ];
1784 /* better than nothing :) */
1785 if ( timeout == 0 ) {
1786 if ( li->li_idle_timeout ) {
1787 timeout = li->li_idle_timeout;
1789 } else if ( li->li_conn_ttl ) {
1790 timeout = li->li_conn_ttl;
1795 stoptime = op->o_time + timeout;
1798 LDAP_BACK_TV_SET( &tv );
1801 /* if result parsing fails, note the failure reason */
1802 rc = ldap_result( lc->lc_ld, msgid, LDAP_MSG_ALL, &tv, &res );
1805 if ( timeout && slap_get_time() > stoptime ) {
1806 if ( sendok & LDAP_BACK_BINDING ) {
1807 ldap_unbind_ext( lc->lc_ld, NULL, NULL );
1810 /* let it be used, but taint/delete it so that
1811 * no-one else can look it up any further */
1812 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1814 #if LDAP_BACK_PRINT_CONNTREE > 0
1815 ldap_back_print_conntree( li, ">>> ldap_back_getconn(timeout)" );
1816 #endif /* LDAP_BACK_PRINT_CONNTREE */
1818 (void)ldap_back_conn_delete( li, lc );
1819 LDAP_BACK_CONN_TAINTED_SET( lc );
1821 #if LDAP_BACK_PRINT_CONNTREE > 0
1822 ldap_back_print_conntree( li, "<<< ldap_back_getconn(timeout)" );
1823 #endif /* LDAP_BACK_PRINT_CONNTREE */
1824 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1827 (void)ldap_back_cancel( lc, op, rs, msgid, sendok );
1829 rs->sr_err = timeout_err;
1830 rs->sr_text = timeout_text;
1835 LDAP_BACK_TV_SET( &tv );
1836 ldap_pvt_thread_yield();
1840 ldap_get_option( lc->lc_ld, LDAP_OPT_ERROR_NUMBER,
1845 /* otherwise get the result; if it is not
1846 * LDAP_SUCCESS, record it in the reply
1847 * structure (this includes
1848 * LDAP_COMPARE_{TRUE|FALSE}) */
1850 /* only touch when activity actually took place... */
1851 if ( li->li_idle_timeout ) {
1852 lc->lc_time = op->o_time;
1855 rc = ldap_parse_result( lc->lc_ld, res, &rs->sr_err,
1856 &match, &text, &refs, &ctrls, 1 );
1857 if ( rc == LDAP_SUCCESS ) {
1862 rs->sr_err = slap_map_api2result( rs );
1864 /* RFC 4511: referrals can only appear
1865 * if result code is LDAP_REFERRAL */
1867 && refs[ 0 ] != NULL
1868 && refs[ 0 ][ 0 ] != '\0' )
1870 if ( rs->sr_err != LDAP_REFERRAL ) {
1871 Debug( LDAP_DEBUG_ANY,
1872 "%s ldap_back_op_result: "
1873 "got referrals with err=%d\n",
1880 for ( i = 0; refs[ i ] != NULL; i++ )
1882 rs->sr_ref = op->o_tmpalloc( sizeof( struct berval ) * ( i + 1 ),
1884 for ( i = 0; refs[ i ] != NULL; i++ ) {
1885 ber_str2bv( refs[ i ], 0, 0, &rs->sr_ref[ i ] );
1887 BER_BVZERO( &rs->sr_ref[ i ] );
1890 } else if ( rs->sr_err == LDAP_REFERRAL ) {
1891 Debug( LDAP_DEBUG_ANY,
1892 "%s ldap_back_op_result: "
1893 "got err=%d with null "
1894 "or empty referrals\n",
1898 rs->sr_err = LDAP_NO_SUCH_OBJECT;
1901 if ( ctrls != NULL ) {
1902 rs->sr_ctrls = ctrls;
1907 /* if the error in the reply structure is not
1908 * LDAP_SUCCESS, try to map it from client
1909 * to server error */
1910 if ( !LDAP_ERR_OK( rs->sr_err ) ) {
1911 rs->sr_err = slap_map_api2result( rs );
1913 /* internal ops ( op->o_conn == NULL )
1914 * must not reply to client */
1915 if ( op->o_conn && !op->o_do_not_cache && match ) {
1917 /* record the (massaged) matched
1918 * DN into the reply structure */
1919 rs->sr_matched = match;
1923 if ( rs->sr_err == LDAP_UNAVAILABLE ) {
1924 if ( !( sendok & LDAP_BACK_RETRYING ) ) {
1925 if ( LDAP_BACK_QUARANTINE( li ) ) {
1926 ldap_back_quarantine( op, rs );
1928 if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
1929 if ( rs->sr_text == NULL ) rs->sr_text = "Proxy operation retry failed";
1930 send_ldap_result( op, rs );
1934 } else if ( op->o_conn &&
1935 ( ( ( sendok & LDAP_BACK_SENDOK ) && LDAP_ERR_OK( rs->sr_err ) )
1936 || ( ( sendok & LDAP_BACK_SENDERR ) && !LDAP_ERR_OK( rs->sr_err ) ) ) )
1938 send_ldap_result( op, rs );
1942 ldap_memfree( text );
1946 /* there can't be refs with a (successful) bind */
1948 op->o_tmpfree( rs->sr_ref, op->o_tmpmemctx );
1953 ber_memvfree( (void **)refs );
1956 /* match should not be possible with a successful bind */
1958 if ( rs->sr_matched != match ) {
1959 free( (char *)rs->sr_matched );
1961 rs->sr_matched = NULL;
1962 ldap_memfree( match );
1965 if ( ctrls != NULL ) {
1966 if ( op->o_tag == LDAP_REQ_BIND && rs->sr_err == LDAP_SUCCESS ) {
1969 for ( i = 0; ctrls[i] != NULL; i++ );
1971 rs->sr_ctrls = op->o_tmpalloc( sizeof( LDAPControl * )*( i + 1 ),
1973 for ( i = 0; ctrls[ i ] != NULL; i++ ) {
1975 ber_len_t oidlen = strlen( ctrls[i]->ldctl_oid );
1976 ber_len_t size = sizeof( LDAPControl )
1978 + ctrls[i]->ldctl_value.bv_len + 1;
1980 rs->sr_ctrls[ i ] = op->o_tmpalloc( size, op->o_tmpmemctx );
1981 rs->sr_ctrls[ i ]->ldctl_oid = (char *)&rs->sr_ctrls[ i ][ 1 ];
1982 lutil_strcopy( rs->sr_ctrls[ i ]->ldctl_oid, ctrls[i]->ldctl_oid );
1983 rs->sr_ctrls[ i ]->ldctl_value.bv_val
1984 = (char *)&rs->sr_ctrls[ i ]->ldctl_oid[oidlen + 1];
1985 rs->sr_ctrls[ i ]->ldctl_value.bv_len
1986 = ctrls[i]->ldctl_value.bv_len;
1987 ptr = lutil_memcopy( rs->sr_ctrls[ i ]->ldctl_value.bv_val,
1988 ctrls[i]->ldctl_value.bv_val, ctrls[i]->ldctl_value.bv_len );
1991 rs->sr_ctrls[ i ] = NULL;
1992 rs->sr_flags |= REP_CTRLS_MUSTBEFREED;
1995 assert( rs->sr_ctrls != NULL );
1996 rs->sr_ctrls = NULL;
1999 ldap_controls_free( ctrls );
2002 return( LDAP_ERR_OK( rs->sr_err ) ? LDAP_SUCCESS : rs->sr_err );
2005 /* return true if bound, false if failed */
2007 ldap_back_retry( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
2009 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
2012 assert( lcp != NULL );
2013 assert( *lcp != NULL );
2015 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
2017 if ( (*lcp)->lc_refcnt == 1 ) {
2018 int binding = LDAP_BACK_CONN_BINDING( *lcp );
2020 ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
2021 Debug( LDAP_DEBUG_ANY,
2022 "%s ldap_back_retry: retrying URI=\"%s\" DN=\"%s\"\n",
2023 op->o_log_prefix, li->li_uri,
2024 BER_BVISNULL( &(*lcp)->lc_bound_ndn ) ?
2025 "" : (*lcp)->lc_bound_ndn.bv_val );
2026 ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
2028 ldap_unbind_ext( (*lcp)->lc_ld, NULL, NULL );
2029 (*lcp)->lc_ld = NULL;
2030 LDAP_BACK_CONN_ISBOUND_CLEAR( (*lcp) );
2032 /* lc here must be the regular lc, reset and ready for init */
2033 rc = ldap_back_prepare_conn( *lcp, op, rs, sendok );
2034 if ( rc != LDAP_SUCCESS ) {
2035 /* freeit, because lc_refcnt == 1 */
2036 (*lcp)->lc_refcnt = 0;
2037 (void)ldap_back_freeconn( li, *lcp, 0 );
2041 } else if ( ( sendok & LDAP_BACK_BINDING ) ) {
2043 LDAP_BACK_CONN_BINDING_SET( *lcp );
2048 rc = ldap_back_dobind_int( lcp, op, rs, sendok, 0, 0 );
2049 if ( rc == 0 && *lcp != NULL ) {
2050 /* freeit, because lc_refcnt == 1 */
2051 (*lcp)->lc_refcnt = 0;
2052 LDAP_BACK_CONN_TAINTED_SET( *lcp );
2053 (void)ldap_back_freeconn( li, *lcp, 0 );
2059 Debug( LDAP_DEBUG_TRACE,
2060 "ldap_back_retry: conn %p refcnt=%u unable to retry.\n",
2061 (void *)(*lcp), (*lcp)->lc_refcnt, 0 );
2063 LDAP_BACK_CONN_TAINTED_SET( *lcp );
2064 ldap_back_release_conn_lock( li, lcp, 0 );
2065 assert( *lcp == NULL );
2067 if ( sendok & LDAP_BACK_SENDERR ) {
2068 rs->sr_err = LDAP_UNAVAILABLE;
2069 rs->sr_text = "Unable to retry";
2070 send_ldap_result( op, rs );
2074 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
2080 ldap_back_is_proxy_authz( Operation *op, SlapReply *rs, ldap_back_send_t sendok,
2081 struct berval *binddn, struct berval *bindcred )
2083 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
2087 if ( op->o_conn == NULL || op->o_do_not_cache ) {
2091 /* don't proxyAuthz if protocol is not LDAPv3 */
2092 switch ( li->li_version ) {
2097 if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
2103 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
2104 if ( sendok & LDAP_BACK_SENDERR ) {
2105 send_ldap_result( op, rs );
2112 *binddn = slap_empty_bv;
2113 *bindcred = slap_empty_bv;
2115 if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
2116 ndn = op->o_conn->c_ndn;
2122 if ( !( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE )) {
2123 if ( op->o_tag == LDAP_REQ_BIND ) {
2124 if ( !BER_BVISEMPTY( &ndn )) {
2128 } else if ( SLAP_IS_AUTHZ_BACKEND( op )) {
2134 switch ( li->li_idassert_mode ) {
2135 case LDAP_BACK_IDASSERT_LEGACY:
2136 if ( !BER_BVISNULL( &ndn ) && !BER_BVISEMPTY( &ndn ) ) {
2137 if ( !BER_BVISNULL( &li->li_idassert_authcDN ) && !BER_BVISEMPTY( &li->li_idassert_authcDN ) )
2139 *binddn = li->li_idassert_authcDN;
2140 *bindcred = li->li_idassert_passwd;
2147 /* NOTE: rootdn can always idassert */
2148 if ( BER_BVISNULL( &ndn )
2149 && li->li_idassert_authz == NULL
2150 && !( li->li_idassert_flags & LDAP_BACK_AUTH_AUTHZ_ALL ) )
2152 if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
2153 rs->sr_err = LDAP_INAPPROPRIATE_AUTH;
2154 if ( sendok & LDAP_BACK_SENDERR ) {
2155 send_ldap_result( op, rs );
2160 rs->sr_err = LDAP_SUCCESS;
2161 *binddn = slap_empty_bv;
2162 *bindcred = slap_empty_bv;
2168 } else if ( !be_isroot( op ) ) {
2169 if ( li->li_idassert_passthru ) {
2170 struct berval authcDN;
2172 if ( BER_BVISNULL( &ndn ) ) {
2173 authcDN = slap_empty_bv;
2178 rs->sr_err = slap_sasl_matches( op, li->li_idassert_passthru,
2179 &authcDN, &authcDN );
2180 if ( rs->sr_err == LDAP_SUCCESS ) {
2186 if ( li->li_idassert_authz ) {
2187 struct berval authcDN;
2189 if ( BER_BVISNULL( &ndn ) ) {
2190 authcDN = slap_empty_bv;
2195 rs->sr_err = slap_sasl_matches( op, li->li_idassert_authz,
2196 &authcDN, &authcDN );
2197 if ( rs->sr_err != LDAP_SUCCESS ) {
2198 if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
2199 if ( sendok & LDAP_BACK_SENDERR ) {
2200 send_ldap_result( op, rs );
2205 rs->sr_err = LDAP_SUCCESS;
2206 *binddn = slap_empty_bv;
2207 *bindcred = slap_empty_bv;
2216 *binddn = li->li_idassert_authcDN;
2217 *bindcred = li->li_idassert_passwd;
2227 ldap_back_proxy_authz_bind(
2231 ldap_back_send_t sendok,
2232 struct berval *binddn,
2233 struct berval *bindcred )
2235 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
2240 if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
2241 ndn = op->o_conn->c_ndn;
2247 if ( li->li_idassert_authmethod == LDAP_AUTH_SASL ) {
2248 #ifdef HAVE_CYRUS_SASL
2249 void *defaults = NULL;
2250 struct berval authzID = BER_BVNULL;
2252 LDAPControl **ctrlsp = NULL;
2253 LDAPMessage *result = NULL;
2254 const char *rmech = NULL;
2255 const char *save_text = rs->sr_text;
2258 LDAPControl ctrl, *ctrls[2];
2260 #endif /* SLAP_AUTH_DN */
2262 /* if SASL supports native authz, prepare for it */
2263 if ( ( !op->o_do_not_cache || !op->o_is_auth_check ) &&
2264 ( li->li_idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) )
2266 switch ( li->li_idassert_mode ) {
2267 case LDAP_BACK_IDASSERT_OTHERID:
2268 case LDAP_BACK_IDASSERT_OTHERDN:
2269 authzID = li->li_idassert_authzID;
2272 case LDAP_BACK_IDASSERT_ANONYMOUS:
2273 BER_BVSTR( &authzID, "dn:" );
2276 case LDAP_BACK_IDASSERT_SELF:
2277 if ( BER_BVISNULL( &ndn ) ) {
2278 /* connection is not authc'd, so don't idassert */
2279 BER_BVSTR( &authzID, "dn:" );
2282 authzID.bv_len = STRLENOF( "dn:" ) + ndn.bv_len;
2283 authzID.bv_val = slap_sl_malloc( authzID.bv_len + 1, op->o_tmpmemctx );
2284 AC_MEMCPY( authzID.bv_val, "dn:", STRLENOF( "dn:" ) );
2285 AC_MEMCPY( authzID.bv_val + STRLENOF( "dn:" ),
2286 ndn.bv_val, ndn.bv_len + 1 );
2295 if ( li->li_idassert_secprops != NULL ) {
2296 rs->sr_err = ldap_set_option( lc->lc_ld,
2297 LDAP_OPT_X_SASL_SECPROPS,
2298 (void *)li->li_idassert_secprops );
2300 if ( rs->sr_err != LDAP_OPT_SUCCESS ) {
2301 rs->sr_err = LDAP_OTHER;
2302 if ( sendok & LDAP_BACK_SENDERR ) {
2303 send_ldap_result( op, rs );
2305 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
2310 defaults = lutil_sasl_defaults( lc->lc_ld,
2311 li->li_idassert_sasl_mech.bv_val,
2312 li->li_idassert_sasl_realm.bv_val,
2313 li->li_idassert_authcID.bv_val,
2314 li->li_idassert_passwd.bv_val,
2316 if ( defaults == NULL ) {
2317 rs->sr_err = LDAP_OTHER;
2318 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
2319 if ( sendok & LDAP_BACK_SENDERR ) {
2320 send_ldap_result( op, rs );
2326 if ( li->li_idassert_flags & LDAP_BACK_AUTH_DN_AUTHZID ) {
2327 assert( BER_BVISNULL( binddn ) );
2329 ctrl.ldctl_oid = LDAP_CONTROL_AUTHZID_REQUEST;
2330 ctrl.ldctl_iscritical = 0;
2331 BER_BVZERO( &ctrl.ldctl_value );
2336 #endif /* SLAP_AUTH_DN */
2339 rs->sr_err = ldap_sasl_interactive_bind( lc->lc_ld, binddn->bv_val,
2340 li->li_idassert_sasl_mech.bv_val,
2341 ctrlsp, NULL, LDAP_SASL_QUIET, lutil_sasl_interact, defaults,
2342 result, &rmech, &msgid );
2344 if ( rs->sr_err != LDAP_SASL_BIND_IN_PROGRESS )
2347 ldap_msgfree( result );
2349 if ( ldap_result( lc->lc_ld, msgid, LDAP_MSG_ALL, NULL, &result ) == -1 || !result ) {
2350 ldap_get_option( lc->lc_ld, LDAP_OPT_RESULT_CODE, (void*)&rs->sr_err );
2351 ldap_get_option( lc->lc_ld, LDAP_OPT_DIAGNOSTIC_MESSAGE, (void*)&rs->sr_text );
2354 } while ( rs->sr_err == LDAP_SASL_BIND_IN_PROGRESS );
2356 ldap_pvt_thread_mutex_lock( &li->li_counter_mutex );
2357 ldap_pvt_mp_add( li->li_ops_completed[ SLAP_OP_BIND ], 1 );
2358 ldap_pvt_thread_mutex_unlock( &li->li_counter_mutex );
2360 switch ( rs->sr_err ) {
2363 /* FIXME: right now, the only reason to check
2364 * response controls is RFC 3829 authzid */
2365 if ( li->li_idassert_flags & LDAP_BACK_AUTH_DN_AUTHZID ) {
2367 rc = ldap_parse_result( lc->lc_ld, result, NULL, NULL, NULL, NULL,
2369 if ( rc == LDAP_SUCCESS && ctrlsp ) {
2372 ctrl = ldap_control_find( LDAP_CONTROL_AUTHZID_RESPONSE,
2375 Debug( LDAP_DEBUG_TRACE, "%s: ldap_back_proxy_authz_bind: authzID=\"%s\" (authzid)\n",
2376 op->o_log_prefix, ctrl->ldctl_value.bv_val, 0 );
2377 if ( ctrl->ldctl_value.bv_len > STRLENOF("dn:") &&
2378 strncasecmp( ctrl->ldctl_value.bv_val, "dn:", STRLENOF("dn:") ) == 0 )
2381 bv.bv_val = &ctrl->ldctl_value.bv_val[STRLENOF("dn:")];
2382 bv.bv_len = ctrl->ldctl_value.bv_len - STRLENOF("dn:");
2383 ber_bvreplace( &lc->lc_bound_ndn, &bv );
2388 ldap_controls_free( ctrlsp );
2390 } else if ( li->li_idassert_flags & LDAP_BACK_AUTH_DN_WHOAMI ) {
2391 struct berval *val = NULL;
2392 rc = ldap_whoami_s( lc->lc_ld, &val, NULL, NULL );
2393 if ( rc == LDAP_SUCCESS && val != NULL ) {
2394 Debug( LDAP_DEBUG_TRACE, "%s: ldap_back_proxy_authz_bind: authzID=\"%s\" (whoami)\n",
2395 op->o_log_prefix, val->bv_val, 0 );
2396 if ( val->bv_len > STRLENOF("dn:") &&
2397 strncasecmp( val->bv_val, "dn:", STRLENOF("dn:") ) == 0 )
2400 bv.bv_val = &val->bv_val[STRLENOF("dn:")];
2401 bv.bv_len = val->bv_len - STRLENOF("dn:");
2402 ber_bvreplace( &lc->lc_bound_ndn, &bv );
2408 if ( ( li->li_idassert_flags & LDAP_BACK_AUTH_DN_MASK ) &&
2409 BER_BVISNULL( &lc->lc_bound_ndn ) )
2411 /* all in all, we only need it to be non-null */
2412 /* FIXME: should this be configurable? */
2413 static struct berval bv = BER_BVC("cn=authzdn");
2414 ber_bvreplace( &lc->lc_bound_ndn, &bv );
2416 #endif /* SLAP_AUTH_DN */
2417 LDAP_BACK_CONN_ISBOUND_SET( lc );
2420 case LDAP_LOCAL_ERROR:
2421 /* list client API error codes that require
2422 * to taint the connection */
2423 /* FIXME: should actually retry? */
2424 LDAP_BACK_CONN_TAINTED_SET( lc );
2429 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
2430 rs->sr_err = slap_map_api2result( rs );
2431 if ( sendok & LDAP_BACK_SENDERR ) {
2432 send_ldap_result( op, rs );
2437 if ( save_text != rs->sr_text ) {
2438 ldap_memfree( (char *)rs->sr_text );
2439 rs->sr_text = save_text;
2442 ldap_msgfree( result );
2444 lutil_sasl_freedefs( defaults );
2446 slap_sl_free( authzID.bv_val, op->o_tmpmemctx );
2450 #endif /* HAVE_CYRUS_SASL */
2453 switch ( li->li_idassert_authmethod ) {
2454 case LDAP_AUTH_NONE:
2455 /* FIXME: do we really need this? */
2456 BER_BVSTR( binddn, "" );
2457 BER_BVSTR( bindcred, "" );
2460 case LDAP_AUTH_SIMPLE:
2461 rs->sr_err = ldap_sasl_bind( lc->lc_ld,
2462 binddn->bv_val, LDAP_SASL_SIMPLE,
2463 bindcred, NULL, NULL, &msgid );
2464 rc = ldap_back_op_result( lc, op, rs, msgid,
2465 -1, ( sendok | LDAP_BACK_BINDING ) );
2467 ldap_pvt_thread_mutex_lock( &li->li_counter_mutex );
2468 ldap_pvt_mp_add( li->li_ops_completed[ SLAP_OP_BIND ], 1 );
2469 ldap_pvt_thread_mutex_unlock( &li->li_counter_mutex );
2474 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
2475 rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
2476 if ( sendok & LDAP_BACK_SENDERR ) {
2477 send_ldap_result( op, rs );
2482 if ( rc == LDAP_SUCCESS ) {
2483 /* set rebind stuff in case of successful proxyAuthz bind,
2484 * so that referral chasing is attempted using the right
2486 LDAP_BACK_CONN_ISBOUND_SET( lc );
2487 if ( !BER_BVISNULL( binddn ) ) {
2488 ber_bvreplace( &lc->lc_bound_ndn, binddn );
2491 if ( !BER_BVISNULL( &lc->lc_cred ) ) {
2492 memset( lc->lc_cred.bv_val, 0,
2493 lc->lc_cred.bv_len );
2496 if ( LDAP_BACK_SAVECRED( li ) ) {
2497 if ( !BER_BVISNULL( bindcred ) ) {
2498 ber_bvreplace( &lc->lc_cred, bindcred );
2499 ldap_set_rebind_proc( lc->lc_ld, li->li_rebind_f, lc );
2503 lc->lc_cred.bv_len = 0;
2508 return LDAP_BACK_CONN_ISBOUND( lc );
2512 * ldap_back_proxy_authz_ctrl() prepends a proxyAuthz control
2513 * to existing server-side controls if required; if not,
2514 * the existing server-side controls are placed in *pctrls.
2515 * The caller, after using the controls in client API
2516 * operations, if ( *pctrls != op->o_ctrls ), should
2517 * free( (*pctrls)[ 0 ] ) and free( *pctrls ).
2518 * The function returns success if the control could
2519 * be added if required, or if it did nothing; in the future,
2520 * it might return some error if it failed.
2522 * if no bind took place yet, but the connection is bound
2523 * and the "proxyauthzdn" is set, then bind as "proxyauthzdn"
2524 * and explicitly add proxyAuthz the control to every operation
2525 * with the dn bound to the connection as control value.
2527 * If no server-side controls are defined for the operation,
2528 * simply add the proxyAuthz control; otherwise, if the
2529 * proxyAuthz control is not already set, add it as
2532 * FIXME: is controls order significant for security?
2533 * ANSWER: controls ordering and interoperability
2534 * must be indicated by the specs of each control; if none
2535 * is specified, the order is irrelevant.
2538 ldap_back_proxy_authz_ctrl(
2541 struct berval *bound_ndn,
2543 slap_idassert_t *si,
2546 slap_idassert_mode_t mode;
2547 struct berval assertedID,
2551 rs->sr_err = SLAP_CB_CONTINUE;
2553 /* FIXME: SASL/EXTERNAL over ldapi:// doesn't honor the authcID,
2554 * but if it is not set this test fails. We need a different
2555 * means to detect if idassert is enabled */
2556 if ( ( BER_BVISNULL( &si->si_bc.sb_authcId ) || BER_BVISEMPTY( &si->si_bc.sb_authcId ) )
2557 && ( BER_BVISNULL( &si->si_bc.sb_binddn ) || BER_BVISEMPTY( &si->si_bc.sb_binddn ) )
2558 && BER_BVISNULL( &si->si_bc.sb_saslmech ) )
2563 if ( !op->o_conn || op->o_do_not_cache || ( isroot = be_isroot( op ) ) ) {
2567 if ( op->o_tag == LDAP_REQ_BIND ) {
2568 ndn = op->o_req_ndn;
2570 } else if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
2571 ndn = op->o_conn->c_ndn;
2577 if ( si->si_mode == LDAP_BACK_IDASSERT_LEGACY ) {
2578 if ( op->o_proxy_authz ) {
2580 * FIXME: we do not want to perform proxyAuthz
2581 * on behalf of the client, because this would
2582 * be performed with "proxyauthzdn" privileges.
2584 * This might actually be too strict, since
2585 * the "proxyauthzdn" authzTo, and each entry's
2586 * authzFrom attributes may be crafted
2587 * to avoid unwanted proxyAuthz to take place.
2590 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
2591 rs->sr_text = "proxyAuthz not allowed within namingContext";
2596 if ( !BER_BVISNULL( bound_ndn ) ) {
2600 if ( BER_BVISNULL( &ndn ) ) {
2604 if ( BER_BVISNULL( &si->si_bc.sb_binddn ) ) {
2608 } else if ( si->si_bc.sb_method == LDAP_AUTH_SASL ) {
2609 if ( ( si->si_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) )
2611 /* already asserted in SASL via native authz */
2615 } else if ( si->si_authz && !isroot ) {
2617 struct berval authcDN;
2619 if ( BER_BVISNULL( &ndn ) ) {
2620 authcDN = slap_empty_bv;
2624 rc = slap_sasl_matches( op, si->si_authz,
2625 &authcDN, &authcDN );
2626 if ( rc != LDAP_SUCCESS ) {
2627 if ( si->si_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
2628 /* ndn is not authorized
2629 * to use idassert */
2636 if ( op->o_proxy_authz ) {
2639 * 1) ignore the already set proxyAuthz control
2640 * 2) leave it in place, and don't set ours
2642 * 4) reject the operation
2644 * option (4) is very drastic
2645 * option (3) will make the remote server reject
2646 * the operation, thus being equivalent to (4)
2647 * option (2) will likely break the idassert
2648 * assumptions, so we cannot accept it;
2649 * option (1) means that we are contradicting
2650 * the client's reques.
2652 * I think (4) is the only correct choice.
2654 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
2655 rs->sr_text = "proxyAuthz not allowed within namingContext";
2658 if ( op->o_is_auth_check ) {
2659 mode = LDAP_BACK_IDASSERT_NOASSERT;
2666 case LDAP_BACK_IDASSERT_LEGACY:
2667 /* original behavior:
2668 * assert the client's identity */
2669 case LDAP_BACK_IDASSERT_SELF:
2673 case LDAP_BACK_IDASSERT_ANONYMOUS:
2674 /* assert "anonymous" */
2675 assertedID = slap_empty_bv;
2678 case LDAP_BACK_IDASSERT_NOASSERT:
2679 /* don't assert; bind as proxyauthzdn */
2682 case LDAP_BACK_IDASSERT_OTHERID:
2683 case LDAP_BACK_IDASSERT_OTHERDN:
2684 /* assert idassert DN */
2685 assertedID = si->si_bc.sb_authzId;
2692 /* if we got here, "" is allowed to proxyAuthz */
2693 if ( BER_BVISNULL( &assertedID ) ) {
2694 assertedID = slap_empty_bv;
2697 /* don't idassert the bound DN (ITS#4497) */
2698 if ( dn_match( &assertedID, bound_ndn ) ) {
2702 ctrl->ldctl_oid = LDAP_CONTROL_PROXY_AUTHZ;
2703 ctrl->ldctl_iscritical = ( ( si->si_flags & LDAP_BACK_AUTH_PROXYAUTHZ_CRITICAL ) == LDAP_BACK_AUTH_PROXYAUTHZ_CRITICAL );
2705 switch ( si->si_mode ) {
2706 /* already in u:ID or dn:DN form */
2707 case LDAP_BACK_IDASSERT_OTHERID:
2708 case LDAP_BACK_IDASSERT_OTHERDN:
2709 ber_dupbv_x( &ctrl->ldctl_value, &assertedID, op->o_tmpmemctx );
2710 rs->sr_err = LDAP_SUCCESS;
2713 /* needs the dn: prefix */
2715 ctrl->ldctl_value.bv_len = assertedID.bv_len + STRLENOF( "dn:" );
2716 ctrl->ldctl_value.bv_val = op->o_tmpalloc( ctrl->ldctl_value.bv_len + 1,
2718 AC_MEMCPY( ctrl->ldctl_value.bv_val, "dn:", STRLENOF( "dn:" ) );
2719 AC_MEMCPY( &ctrl->ldctl_value.bv_val[ STRLENOF( "dn:" ) ],
2720 assertedID.bv_val, assertedID.bv_len + 1 );
2721 rs->sr_err = LDAP_SUCCESS;
2725 /* Older versions of <draft-weltman-ldapv3-proxy> required
2726 * to encode the value of the authzID (and called it proxyDN);
2727 * this hack provides compatibility with those DSAs that
2728 * implement it this way */
2729 if ( si->si_flags & LDAP_BACK_AUTH_OBSOLETE_ENCODING_WORKAROUND ) {
2730 struct berval authzID = ctrl->ldctl_value;
2731 BerElementBuffer berbuf;
2732 BerElement *ber = (BerElement *)&berbuf;
2735 ber_init2( ber, 0, LBER_USE_DER );
2736 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
2738 tag = ber_printf( ber, "O", &authzID );
2739 if ( tag == LBER_ERROR ) {
2740 rs->sr_err = LDAP_OTHER;
2744 if ( ber_flatten2( ber, &ctrl->ldctl_value, 1 ) == -1 ) {
2745 rs->sr_err = LDAP_OTHER;
2749 rs->sr_err = LDAP_SUCCESS;
2752 op->o_tmpfree( authzID.bv_val, op->o_tmpmemctx );
2753 ber_free_buf( ber );
2755 if ( rs->sr_err != LDAP_SUCCESS ) {
2759 } else if ( si->si_flags & LDAP_BACK_AUTH_OBSOLETE_PROXY_AUTHZ ) {
2760 struct berval authzID = ctrl->ldctl_value,
2762 BerElementBuffer berbuf;
2763 BerElement *ber = (BerElement *)&berbuf;
2766 if ( strncasecmp( authzID.bv_val, "dn:", STRLENOF( "dn:" ) ) != 0 ) {
2767 rs->sr_err = LDAP_PROTOCOL_ERROR;
2772 tmp.bv_val += STRLENOF( "dn:" );
2773 tmp.bv_len -= STRLENOF( "dn:" );
2775 ber_init2( ber, 0, LBER_USE_DER );
2776 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
2778 /* apparently, Mozilla API encodes this
2779 * as "SEQUENCE { LDAPDN }" */
2780 tag = ber_printf( ber, "{O}", &tmp );
2781 if ( tag == LBER_ERROR ) {
2782 rs->sr_err = LDAP_OTHER;
2786 if ( ber_flatten2( ber, &ctrl->ldctl_value, 1 ) == -1 ) {
2787 rs->sr_err = LDAP_OTHER;
2791 ctrl->ldctl_oid = LDAP_CONTROL_OBSOLETE_PROXY_AUTHZ;
2792 rs->sr_err = LDAP_SUCCESS;
2795 op->o_tmpfree( authzID.bv_val, op->o_tmpmemctx );
2796 ber_free_buf( ber );
2798 if ( rs->sr_err != LDAP_SUCCESS ) {
2811 * if any needs to be added, it is prepended to existing ones,
2812 * in a newly allocated array. The companion function
2813 * ldap_back_controls_free() must be used to restore the original
2814 * status of op->o_ctrls.
2817 ldap_back_controls_add(
2821 LDAPControl ***pctrls )
2823 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
2825 LDAPControl **ctrls = NULL;
2826 /* set to the maximum number of controls this backend can add */
2827 LDAPControl c[ 2 ] = { { 0 } };
2828 int n = 0, i, j1 = 0, j2 = 0;
2832 rs->sr_err = LDAP_SUCCESS;
2834 /* don't add controls if protocol is not LDAPv3 */
2835 switch ( li->li_version ) {
2840 if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
2849 /* put controls that go __before__ existing ones here */
2851 /* proxyAuthz for identity assertion */
2852 switch ( ldap_back_proxy_authz_ctrl( op, rs, &lc->lc_bound_ndn,
2853 li->li_version, &li->li_idassert, &c[ j1 ] ) )
2855 case SLAP_CB_CONTINUE:
2866 /* put controls that go __after__ existing ones here */
2868 #ifdef SLAP_CONTROL_X_SESSION_TRACKING
2869 /* FIXME: according to <draft-wahl-ldap-session>,
2870 * the server should check if the control can be added
2871 * based on the identity of the client and so */
2873 /* session tracking */
2874 if ( LDAP_BACK_ST_REQUEST( li ) ) {
2875 switch ( slap_ctrl_session_tracking_request_add( op, rs, &c[ j1 + j2 ] ) ) {
2876 case SLAP_CB_CONTINUE:
2887 #endif /* SLAP_CONTROL_X_SESSION_TRACKING */
2889 if ( rs->sr_err == SLAP_CB_CONTINUE ) {
2890 rs->sr_err = LDAP_SUCCESS;
2893 /* if nothing to do, just bail out */
2894 if ( j1 == 0 && j2 == 0 ) {
2898 assert( j1 + j2 <= (int) (sizeof( c )/sizeof( c[0] )) );
2900 if ( op->o_ctrls ) {
2901 for ( n = 0; op->o_ctrls[ n ]; n++ )
2902 /* just count ctrls */ ;
2905 ctrls = op->o_tmpalloc( (n + j1 + j2 + 1) * sizeof( LDAPControl * ) + ( j1 + j2 ) * sizeof( LDAPControl ),
2908 ctrls[ 0 ] = (LDAPControl *)&ctrls[ n + j1 + j2 + 1 ];
2909 *ctrls[ 0 ] = c[ 0 ];
2910 for ( i = 1; i < j1; i++ ) {
2911 ctrls[ i ] = &ctrls[ 0 ][ i ];
2912 *ctrls[ i ] = c[ i ];
2917 if ( op->o_ctrls ) {
2918 for ( i = 0; op->o_ctrls[ i ]; i++ ) {
2919 ctrls[ i + j1 ] = op->o_ctrls[ i ];
2925 ctrls[ n ] = (LDAPControl *)&ctrls[ n + j2 + 1 ] + j1;
2926 *ctrls[ n ] = c[ j1 ];
2927 for ( i = 1; i < j2; i++ ) {
2928 ctrls[ n + i ] = &ctrls[ n ][ i ];
2929 *ctrls[ n + i ] = c[ i ];
2933 ctrls[ n + j2 ] = NULL;
2936 if ( ctrls == NULL ) {
2937 ctrls = op->o_ctrls;
2946 ldap_back_controls_free( Operation *op, SlapReply *rs, LDAPControl ***pctrls )
2948 LDAPControl **ctrls = *pctrls;
2950 /* we assume that the controls added by the proxy come first,
2951 * so as soon as we find op->o_ctrls[ 0 ] we can stop */
2952 if ( ctrls && ctrls != op->o_ctrls ) {
2953 int i = 0, n = 0, n_added;
2954 LDAPControl *lower, *upper;
2956 assert( ctrls[ 0 ] != NULL );
2958 for ( n = 0; ctrls[ n ] != NULL; n++ )
2961 if ( op->o_ctrls ) {
2962 for ( i = 0; op->o_ctrls[ i ] != NULL; i++ )
2967 lower = (LDAPControl *)&ctrls[ n ];
2968 upper = &lower[ n_added ];
2970 for ( i = 0; ctrls[ i ] != NULL; i++ ) {
2971 if ( ctrls[ i ] < lower || ctrls[ i ] >= upper ) {
2972 /* original; don't touch */
2976 if ( !BER_BVISNULL( &ctrls[ i ]->ldctl_value ) ) {
2977 op->o_tmpfree( ctrls[ i ]->ldctl_value.bv_val, op->o_tmpmemctx );
2981 op->o_tmpfree( ctrls, op->o_tmpmemctx );
2990 ldap_back_conn2str( const ldapconn_base_t *lc, char *buf, ber_len_t buflen )
2992 char tbuf[ SLAP_TEXT_BUFLEN ];
2993 char *ptr = buf, *end = buf + buflen;
2996 if ( ptr + sizeof("conn=") > end ) return -1;
2997 ptr = lutil_strcopy( ptr, "conn=" );
2999 len = ldap_back_connid2str( lc, ptr, (ber_len_t)(end - ptr) );
3001 if ( ptr >= end ) return -1;
3003 if ( !BER_BVISNULL( &lc->lcb_local_ndn ) ) {
3004 if ( ptr + sizeof(" DN=\"\"") + lc->lcb_local_ndn.bv_len > end ) return -1;
3005 ptr = lutil_strcopy( ptr, " DN=\"" );
3006 ptr = lutil_strncopy( ptr, lc->lcb_local_ndn.bv_val, lc->lcb_local_ndn.bv_len );
3010 if ( lc->lcb_create_time != 0 ) {
3011 len = snprintf( tbuf, sizeof(tbuf), "%ld", lc->lcb_create_time );
3012 if ( ptr + sizeof(" created=") + len >= end ) return -1;
3013 ptr = lutil_strcopy( ptr, " created=" );
3014 ptr = lutil_strcopy( ptr, tbuf );
3017 if ( lc->lcb_time != 0 ) {
3018 len = snprintf( tbuf, sizeof(tbuf), "%ld", lc->lcb_time );
3019 if ( ptr + sizeof(" modified=") + len >= end ) return -1;
3020 ptr = lutil_strcopy( ptr, " modified=" );
3021 ptr = lutil_strcopy( ptr, tbuf );
3024 len = snprintf( tbuf, sizeof(tbuf), "%u", lc->lcb_refcnt );
3025 if ( ptr + sizeof(" refcnt=") + len >= end ) return -1;
3026 ptr = lutil_strcopy( ptr, " refcnt=" );
3027 ptr = lutil_strcopy( ptr, tbuf );
3033 ldap_back_connid2str( const ldapconn_base_t *lc, char *buf, ber_len_t buflen )
3035 static struct berval conns[] = {
3037 BER_BVC("ROOTDN-TLS"),
3039 BER_BVC("ANON-TLS"),
3041 BER_BVC("BIND-TLS"),
3047 if ( LDAP_BACK_PCONN_ISPRIV( (const ldapconn_t *)lc ) ) {
3051 cid = (long)lc->lcb_conn;
3052 assert( cid >= LDAP_BACK_PCONN_FIRST && cid < LDAP_BACK_PCONN_LAST );
3056 if ( bv->bv_len >= buflen ) {
3057 return bv->bv_len + 1;
3061 lutil_strncopy( buf, bv->bv_val, bv->bv_len + 1 );
3064 len = snprintf( buf, buflen, "%lu", lc->lcb_conn->c_connid );