1 /* bind.c - ldap backend bind function */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1999-2007 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"
35 #undef ldap_debug /* silence a warning in ldap-int.h */
36 #include "../../../libraries/libldap/ldap-int.h"
38 #include "lutil_ldap.h"
40 #define LDAP_CONTROL_OBSOLETE_PROXY_AUTHZ "2.16.840.1.113730.3.4.12"
42 #if LDAP_BACK_PRINT_CONNTREE > 0
44 ldap_back_ravl_print( Avlnode *root, int depth )
53 ldap_back_ravl_print( root->avl_right, depth+1 );
55 for ( i = 0; i < depth; i++ ) {
56 fprintf( stderr, "-" );
60 fprintf( stderr, "lc=%p local=\"%s\" conn=%p %s refcnt=%d flags=0x%08x\n",
62 lc->lc_local_ndn.bv_val ? lc->lc_local_ndn.bv_val : "",
64 avl_bf2str( root->avl_bf ), lc->lc_refcnt, lc->lc_lcflags );
66 ldap_back_ravl_print( root->avl_left, depth+1 );
69 static char* priv2str[] = {
80 ldap_back_print_conntree( ldapinfo_t *li, char *msg )
84 fprintf( stderr, "========> %s\n", msg );
86 for ( c = LDAP_BACK_PCONN_FIRST; c < LDAP_BACK_PCONN_LAST; c++ ) {
90 fprintf( stderr, " %s[%d]\n", priv2str[ c ], li->li_conn_priv[ c ].lic_num );
92 LDAP_TAILQ_FOREACH( lc, &li->li_conn_priv[ c ].lic_priv, lc_q )
94 fprintf( stderr, " [%d] lc=%p local=\"%s\" conn=%p refcnt=%d flags=0x%08x\n",
97 lc->lc_local_ndn.bv_val ? lc->lc_local_ndn.bv_val : "",
98 (void *)lc->lc_conn, lc->lc_refcnt, lc->lc_lcflags );
103 if ( li->li_conninfo.lai_tree == 0 ) {
104 fprintf( stderr, "\t(empty)\n" );
107 ldap_back_ravl_print( li->li_conninfo.lai_tree, 0 );
110 fprintf( stderr, "<======== %s\n", msg );
112 #endif /* LDAP_BACK_PRINT_CONNTREE */
115 ldap_back_freeconn( ldapinfo_t *li, ldapconn_t *lc, int dolock );
118 ldap_back_getconn( Operation *op, SlapReply *rs, ldap_back_send_t sendok,
119 struct berval *binddn, struct berval *bindcred );
122 ldap_back_is_proxy_authz( Operation *op, SlapReply *rs, ldap_back_send_t sendok,
123 struct berval *binddn, struct berval *bindcred );
126 ldap_back_proxy_authz_bind( ldapconn_t *lc, Operation *op, SlapReply *rs,
127 ldap_back_send_t sendok, struct berval *binddn, struct berval *bindcred );
130 ldap_back_prepare_conn( ldapconn_t *lc, Operation *op, SlapReply *rs,
131 ldap_back_send_t sendok );
134 ldap_back_conndnlc_cmp( const void *c1, const void *c2 );
137 ldap_back_conn_delete( ldapinfo_t *li, ldapconn_t *lc )
139 if ( LDAP_BACK_PCONN_ISPRIV( lc ) ) {
140 if ( LDAP_BACK_CONN_CACHED( lc ) ) {
141 assert( lc->lc_q.tqe_prev != NULL );
142 assert( li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_num > 0 );
143 li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_num--;
144 LDAP_TAILQ_REMOVE( &li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_priv, lc, lc_q );
145 LDAP_TAILQ_ENTRY_INIT( lc, lc_q );
146 LDAP_BACK_CONN_CACHED_CLEAR( lc );
149 assert( LDAP_BACK_CONN_TAINTED( lc ) );
150 assert( lc->lc_q.tqe_prev == NULL );
154 ldapconn_t *tmplc = NULL;
156 if ( LDAP_BACK_CONN_CACHED( lc ) ) {
157 assert( !LDAP_BACK_CONN_TAINTED( lc ) );
158 tmplc = avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc,
159 ldap_back_conndnlc_cmp );
160 assert( tmplc == lc );
161 LDAP_BACK_CONN_CACHED_CLEAR( lc );
164 assert( LDAP_BACK_CONN_TAINTED( lc ) || tmplc == lc );
171 ldap_back_bind( Operation *op, SlapReply *rs )
173 ldapinfo_t *li = (ldapinfo_t *) op->o_bd->be_private;
176 LDAPControl **ctrls = NULL;
177 struct berval save_o_dn;
178 int save_o_do_not_cache,
181 ldap_back_send_t retrying = LDAP_BACK_RETRYING;
183 /* allow rootdn as a means to auth without the need to actually
184 * contact the proxied DSA */
185 switch ( be_rootdn_bind( op, rs ) ) {
186 case SLAP_CB_CONTINUE:
193 lc = ldap_back_getconn( op, rs, LDAP_BACK_BIND_SERR, NULL, NULL );
198 /* we can do (almost) whatever we want with this conn,
199 * because either it's temporary, or it's marked as binding */
200 if ( !BER_BVISNULL( &lc->lc_bound_ndn ) ) {
201 ch_free( lc->lc_bound_ndn.bv_val );
202 BER_BVZERO( &lc->lc_bound_ndn );
204 if ( !BER_BVISNULL( &lc->lc_cred ) ) {
205 memset( lc->lc_cred.bv_val, 0, lc->lc_cred.bv_len );
206 ch_free( lc->lc_cred.bv_val );
207 BER_BVZERO( &lc->lc_cred );
209 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
211 /* don't add proxyAuthz; set the bindDN */
212 save_o_dn = op->o_dn;
213 save_o_do_not_cache = op->o_do_not_cache;
214 op->o_dn = op->o_req_dn;
215 op->o_do_not_cache = 1;
218 rc = ldap_back_controls_add( op, rs, lc, &ctrls );
219 op->o_dn = save_o_dn;
220 op->o_do_not_cache = save_o_do_not_cache;
221 if ( rc != LDAP_SUCCESS ) {
222 send_ldap_result( op, rs );
223 ldap_back_release_conn( li, lc );
228 /* method is always LDAP_AUTH_SIMPLE if we got here */
229 rs->sr_err = ldap_sasl_bind( lc->lc_ld, op->o_req_dn.bv_val,
231 &op->orb_cred, ctrls, NULL, &msgid );
232 /* FIXME: should we always retry, or only when piping the bind
233 * in the "override" connection pool? */
234 rc = ldap_back_op_result( lc, op, rs, msgid,
235 li->li_timeout[ SLAP_OP_BIND ],
236 LDAP_BACK_BIND_SERR | retrying );
237 if ( rc == LDAP_UNAVAILABLE && retrying ) {
238 retrying &= ~LDAP_BACK_RETRYING;
239 if ( ldap_back_retry( &lc, op, rs, LDAP_BACK_BIND_SERR ) ) {
244 ldap_back_controls_free( op, rs, &ctrls );
246 if ( rc == LDAP_SUCCESS ) {
247 /* If defined, proxyAuthz will be used also when
248 * back-ldap is the authorizing backend; for this
249 * purpose, after a successful bind the connection
250 * is left for further binds, and further operations
251 * on this client connection will use a default
252 * connection with identity assertion */
253 /* NOTE: use with care */
254 if ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) {
255 ldap_back_release_conn( li, lc );
259 /* rebind is now done inside ldap_back_proxy_authz_bind()
260 * in case of success */
261 LDAP_BACK_CONN_ISBOUND_SET( lc );
262 ber_dupbv( &lc->lc_bound_ndn, &op->o_req_ndn );
264 if ( !BER_BVISNULL( &lc->lc_cred ) ) {
265 memset( lc->lc_cred.bv_val, 0,
266 lc->lc_cred.bv_len );
269 if ( LDAP_BACK_SAVECRED( li ) ) {
270 ber_bvreplace( &lc->lc_cred, &op->orb_cred );
271 ldap_set_rebind_proc( lc->lc_ld, li->li_rebind_f, lc );
274 lc->lc_cred.bv_len = 0;
278 /* must re-insert if local DN changed as result of bind */
279 if ( !LDAP_BACK_CONN_ISBOUND( lc )
280 || ( !dn_match( &op->o_req_ndn, &lc->lc_local_ndn )
281 && !LDAP_BACK_PCONN_ISPRIV( lc ) ) )
286 /* wait for all other ops to release the connection */
288 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
289 if ( lc->lc_refcnt > 1 ) {
290 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
291 ldap_pvt_thread_yield();
295 #if LDAP_BACK_PRINT_CONNTREE > 0
296 ldap_back_print_conntree( li, ">>> ldap_back_bind" );
297 #endif /* LDAP_BACK_PRINT_CONNTREE */
299 assert( lc->lc_refcnt == 1 );
300 ldap_back_conn_delete( li, lc );
302 /* delete all cached connections with the current connection */
303 if ( LDAP_BACK_SINGLECONN( li ) ) {
304 while ( ( tmplc = avl_delete( &li->li_conninfo.lai_tree, (caddr_t)lc, ldap_back_conn_cmp ) ) != NULL )
306 Debug( LDAP_DEBUG_TRACE,
307 "=>ldap_back_bind: destroying conn %ld (refcnt=%u)\n",
308 LDAP_BACK_PCONN_ID( lc ), lc->lc_refcnt, 0 );
310 if ( tmplc->lc_refcnt != 0 ) {
312 LDAP_BACK_CONN_TAINTED_SET( tmplc );
313 LDAP_BACK_CONN_CACHED_CLEAR( tmplc );
317 * Needs a test because the handler may be corrupted,
318 * and calling ldap_unbind on a corrupted header results
319 * in a segmentation fault
321 ldap_back_conn_free( tmplc );
326 if ( LDAP_BACK_CONN_ISBOUND( lc ) ) {
327 ber_bvreplace( &lc->lc_local_ndn, &op->o_req_ndn );
328 if ( be_isroot_dn( op->o_bd, &op->o_req_ndn ) ) {
329 LDAP_BACK_PCONN_ROOTDN_SET( lc, op );
331 lerr = avl_insert( &li->li_conninfo.lai_tree, (caddr_t)lc,
332 ldap_back_conndn_cmp, ldap_back_conndn_dup );
335 #if LDAP_BACK_PRINT_CONNTREE > 0
336 ldap_back_print_conntree( li, "<<< ldap_back_bind" );
337 #endif /* LDAP_BACK_PRINT_CONNTREE */
339 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
342 LDAP_BACK_CONN_CACHED_SET( lc );
346 /* duplicate; someone else successfully bound
347 * on the same connection with the same identity;
348 * we can do this because lc_refcnt == 1 */
349 ldap_back_conn_free( lc );
355 ldap_back_release_conn( li, lc );
362 * ldap_back_conndn_cmp
364 * compares two ldapconn_t based on the value of the conn pointer
365 * and of the local DN; used by avl stuff for insert, lookup
369 ldap_back_conndn_cmp( const void *c1, const void *c2 )
371 const ldapconn_t *lc1 = (const ldapconn_t *)c1;
372 const ldapconn_t *lc2 = (const ldapconn_t *)c2;
375 /* If local DNs don't match, it is definitely not a match */
376 /* For shared sessions, conn is NULL. Only explicitly
377 * bound sessions will have non-NULL conn.
379 rc = SLAP_PTRCMP( lc1->lc_conn, lc2->lc_conn );
381 rc = ber_bvcmp( &lc1->lc_local_ndn, &lc2->lc_local_ndn );
388 * ldap_back_conndnlc_cmp
390 * compares two ldapconn_t based on the value of the conn pointer,
391 * the local DN and the lc pointer; used by avl stuff for insert, lookup
395 ldap_back_conndnlc_cmp( const void *c1, const void *c2 )
397 const ldapconn_t *lc1 = (const ldapconn_t *)c1;
398 const ldapconn_t *lc2 = (const ldapconn_t *)c2;
401 /* If local DNs don't match, it is definitely not a match */
402 /* For shared sessions, conn is NULL. Only explicitly
403 * bound sessions will have non-NULL conn.
405 rc = SLAP_PTRCMP( lc1->lc_conn, lc2->lc_conn );
407 rc = ber_bvcmp( &lc1->lc_local_ndn, &lc2->lc_local_ndn );
409 rc = SLAP_PTRCMP( lc1, lc2 );
419 * compares two ldapconn_t based on the value of the conn pointer;
420 * used by avl stuff for delete of all conns with the same connid
423 ldap_back_conn_cmp( const void *c1, const void *c2 )
425 const ldapconn_t *lc1 = (const ldapconn_t *)c1;
426 const ldapconn_t *lc2 = (const ldapconn_t *)c2;
428 /* For shared sessions, conn is NULL. Only explicitly
429 * bound sessions will have non-NULL conn.
431 return SLAP_PTRCMP( lc1->lc_conn, lc2->lc_conn );
435 * ldap_back_conndn_dup
437 * returns -1 in case a duplicate ldapconn_t has been inserted;
441 ldap_back_conndn_dup( void *c1, void *c2 )
443 ldapconn_t *lc1 = (ldapconn_t *)c1;
444 ldapconn_t *lc2 = (ldapconn_t *)c2;
446 /* Cannot have more than one shared session with same DN */
447 if ( lc1->lc_conn == lc2->lc_conn &&
448 dn_match( &lc1->lc_local_ndn, &lc2->lc_local_ndn ) )
457 ldap_back_freeconn( ldapinfo_t *li, ldapconn_t *lc, int dolock )
460 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
463 #if LDAP_BACK_PRINT_CONNTREE > 0
464 ldap_back_print_conntree( li, ">>> ldap_back_freeconn" );
465 #endif /* LDAP_BACK_PRINT_CONNTREE */
467 (void)ldap_back_conn_delete( li, lc );
469 if ( lc->lc_refcnt == 0 ) {
470 ldap_back_conn_free( (void *)lc );
473 #if LDAP_BACK_PRINT_CONNTREE > 0
474 ldap_back_print_conntree( li, "<<< ldap_back_freeconn" );
475 #endif /* LDAP_BACK_PRINT_CONNTREE */
478 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
495 int rc = LDAP_SUCCESS;
497 /* start TLS ("tls-[try-]{start,propagate}" statements) */
498 if ( ( LDAP_BACK_USE_TLS_F( flags ) || ( *is_tls && LDAP_BACK_PROPAGATE_TLS_F( flags ) ) )
499 && !ldap_is_ldaps_url( url ) )
501 #ifdef SLAP_STARTTLS_ASYNCHRONOUS
503 * use asynchronous StartTLS
504 * in case, chase referral (not implemented yet)
508 if ( protocol == 0 ) {
509 ldap_get_option( ld, LDAP_OPT_PROTOCOL_VERSION,
513 if ( protocol < LDAP_VERSION3 ) {
514 /* we should rather bail out... */
515 rc = LDAP_UNWILLING_TO_PERFORM;
516 *text = "invalid protocol version";
519 if ( rc == LDAP_SUCCESS ) {
520 rc = ldap_start_tls( ld, NULL, NULL, &msgid );
523 if ( rc == LDAP_SUCCESS ) {
524 LDAPMessage *res = NULL;
527 LDAP_BACK_TV_SET( &tv );
530 rc = ldap_result( ld, msgid, LDAP_MSG_ALL, &tv, &res );
532 rc = LDAP_UNAVAILABLE;
534 } else if ( rc == 0 ) {
535 if ( retries != LDAP_BACK_RETRY_NEVER ) {
536 ldap_pvt_thread_yield();
540 LDAP_BACK_TV_SET( &tv );
543 rc = LDAP_UNAVAILABLE;
545 } else if ( rc == LDAP_RES_EXTENDED ) {
546 struct berval *data = NULL;
548 rc = ldap_parse_extended_result( ld, res,
550 if ( rc == LDAP_SUCCESS ) {
552 rc = ldap_parse_result( ld, res, &err,
553 NULL, NULL, NULL, NULL, 1 );
554 if ( rc == LDAP_SUCCESS ) {
559 /* FIXME: in case a referral
560 * is returned, should we try
561 * using it instead of the
563 if ( rc == LDAP_SUCCESS ) {
564 rc = ldap_install_tls( ld );
566 } else if ( rc == LDAP_REFERRAL ) {
567 rc = LDAP_UNWILLING_TO_PERFORM;
568 *text = "unwilling to chase referral returned by Start TLS exop";
572 if ( data->bv_val ) {
573 ber_memfree( data->bv_val );
587 #else /* ! SLAP_STARTTLS_ASYNCHRONOUS */
589 * use synchronous StartTLS
591 rc = ldap_start_tls_s( ld, NULL, NULL );
592 #endif /* ! SLAP_STARTTLS_ASYNCHRONOUS */
594 /* if StartTLS is requested, only attempt it if the URL
595 * is not "ldaps://"; this may occur not only in case
596 * of misconfiguration, but also when used in the chain
597 * overlay, where the "uri" can be parsed out of a referral */
603 case LDAP_SERVER_DOWN:
607 if ( LDAP_BACK_TLS_CRITICAL_F( flags ) ) {
608 *text = "could not start TLS";
612 /* in case Start TLS is not critical */
624 #endif /* HAVE_TLS */
627 ldap_back_prepare_conn( ldapconn_t *lc, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
629 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
633 int is_tls = op->o_conn->c_is_tls;
634 time_t lc_time = (time_t)(-1);
636 #endif /* HAVE_TLS */
638 ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
639 rs->sr_err = ldap_initialize( &ld, li->li_uri );
640 ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
641 if ( rs->sr_err != LDAP_SUCCESS ) {
645 if ( li->li_urllist_f ) {
646 ldap_set_urllist_proc( ld, li->li_urllist_f, li->li_urllist_p );
649 /* Set LDAP version. This will always succeed: If the client
650 * bound with a particular version, then so can we.
652 if ( li->li_version != 0 ) {
653 version = li->li_version;
655 } else if ( op->o_protocol != 0 ) {
656 version = op->o_protocol;
659 /* assume it's an internal op; set to LDAPv3 */
660 version = LDAP_VERSION3;
662 ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION, (const void *)&version );
664 /* automatically chase referrals ("chase-referrals [{yes|no}]" statement) */
665 ldap_set_option( ld, LDAP_OPT_REFERRALS,
666 LDAP_BACK_CHASE_REFERRALS( li ) ? LDAP_OPT_ON : LDAP_OPT_OFF );
668 if ( li->li_network_timeout > 0 ) {
671 tv.tv_sec = li->li_network_timeout;
673 ldap_set_option( ld, LDAP_OPT_NETWORK_TIMEOUT, (const void *)&tv );
677 if ( LDAP_BACK_CONN_ISPRIV( lc ) ) {
680 } else if ( LDAP_BACK_CONN_ISIDASSERT( lc ) ) {
681 sb = &li->li_idassert.si_bc;
687 if ( sb->sb_tls_do_init ) {
688 bindconf_tls_set( sb, ld );
689 } else if ( sb->sb_tls_ctx ) {
690 ldap_set_option( ld, LDAP_OPT_X_TLS_CTX, sb->sb_tls_ctx );
693 ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
694 rs->sr_err = ldap_back_start_tls( ld, op->o_protocol, &is_tls,
695 li->li_uri, li->li_flags, li->li_nretries, &rs->sr_text );
696 ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
697 if ( rs->sr_err != LDAP_SUCCESS ) {
698 ldap_unbind_ext( ld, NULL, NULL );
699 rs->sr_text = "Start TLS failed";
702 } else if ( li->li_idle_timeout ) {
703 /* only touch when activity actually took place... */
704 lc_time = op->o_time;
706 #endif /* HAVE_TLS */
712 LDAP_BACK_CONN_ISTLS_SET( lc );
714 LDAP_BACK_CONN_ISTLS_CLEAR( lc );
716 if ( lc_time != (time_t)(-1) ) {
717 lc->lc_time = lc_time;
719 #endif /* HAVE_TLS */
722 if ( rs->sr_err != LDAP_SUCCESS ) {
723 rs->sr_err = slap_map_api2result( rs );
724 if ( sendok & LDAP_BACK_SENDERR ) {
725 if ( rs->sr_text == NULL ) {
726 rs->sr_text = "Proxy connection initialization failed";
728 send_ldap_result( op, rs );
732 if ( li->li_conn_ttl > 0 ) {
733 lc->lc_create_time = op->o_time;
744 ldap_back_send_t sendok,
745 struct berval *binddn,
746 struct berval *bindcred )
748 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
749 ldapconn_t *lc = NULL,
752 lookupconn = !( sendok & LDAP_BACK_BINDING );
754 /* if the server is quarantined, and
755 * - the current interval did not expire yet, or
756 * - no more retries should occur,
757 * don't return the connection */
758 if ( li->li_isquarantined ) {
759 slap_retry_info_t *ri = &li->li_quarantine;
762 if ( li->li_quarantine.ri_interval ) {
763 ldap_pvt_thread_mutex_lock( &li->li_quarantine_mutex );
764 if ( li->li_isquarantined == LDAP_BACK_FQ_YES ) {
765 dont_retry = ( ri->ri_num[ ri->ri_idx ] == SLAP_RETRYNUM_TAIL
766 || slap_get_time() < ri->ri_last + ri->ri_interval[ ri->ri_idx ] );
768 Debug( LDAP_DEBUG_ANY,
769 "%s: ldap_back_getconn quarantine "
770 "retry block #%d try #%d.\n",
771 op->o_log_prefix, ri->ri_idx, ri->ri_count );
772 li->li_isquarantined = LDAP_BACK_FQ_RETRYING;
775 ldap_pvt_thread_mutex_unlock( &li->li_quarantine_mutex );
779 rs->sr_err = LDAP_UNAVAILABLE;
780 if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
781 rs->sr_text = "Target is quarantined";
782 send_ldap_result( op, rs );
788 /* Internal searches are privileged and shared. So is root. */
789 if ( op->o_do_not_cache || be_isroot( op ) ) {
790 LDAP_BACK_CONN_ISPRIV_SET( &lc_curr );
791 lc_curr.lc_local_ndn = op->o_bd->be_rootndn;
792 LDAP_BACK_PCONN_ROOTDN_SET( &lc_curr, op );
795 struct berval tmpbinddn,
802 if ( binddn == NULL ) {
805 if ( bindcred == NULL ) {
806 bindcred = &tmpbindcred;
808 if ( op->o_tag == LDAP_REQ_BIND ) {
809 save_o_dn = op->o_dn;
810 save_o_ndn = op->o_ndn;
811 op->o_dn = op->o_req_dn;
812 op->o_ndn = op->o_req_ndn;
814 isproxyauthz = ldap_back_is_proxy_authz( op, rs, sendok, binddn, bindcred );
815 if ( op->o_tag == LDAP_REQ_BIND ) {
816 op->o_dn = save_o_dn;
817 op->o_ndn = save_o_ndn;
819 if ( isproxyauthz == -1 ) {
823 lc_curr.lc_local_ndn = op->o_ndn;
824 /* Explicit binds must not be shared;
825 * however, explicit binds are piped in a special connection
826 * when idassert is to occur with "override" set */
827 if ( op->o_tag == LDAP_REQ_BIND && !isproxyauthz ) {
828 lc_curr.lc_conn = op->o_conn;
831 if ( isproxyauthz && !( sendok & LDAP_BACK_BINDING ) ) {
832 lc_curr.lc_local_ndn = *binddn;
833 LDAP_BACK_PCONN_ROOTDN_SET( &lc_curr, op );
834 LDAP_BACK_CONN_ISIDASSERT_SET( &lc_curr );
836 } else if ( isproxyauthz && ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) ) {
837 lc_curr.lc_local_ndn = slap_empty_bv;
838 LDAP_BACK_PCONN_BIND_SET( &lc_curr, op );
839 LDAP_BACK_CONN_ISIDASSERT_SET( &lc_curr );
842 } else if ( SLAP_IS_AUTHZ_BACKEND( op ) ) {
843 lc_curr.lc_conn = op->o_conn;
846 LDAP_BACK_PCONN_ANON_SET( &lc_curr, op );
851 /* Explicit Bind requests always get their own conn */
854 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
855 if ( LDAP_BACK_PCONN_ISPRIV( &lc_curr ) ) {
856 /* lookup a conn that's not binding */
857 LDAP_TAILQ_FOREACH( lc,
858 &li->li_conn_priv[ LDAP_BACK_CONN2PRIV( &lc_curr ) ].lic_priv,
861 if ( !LDAP_BACK_CONN_BINDING( lc ) && lc->lc_refcnt == 0 ) {
867 if ( lc != LDAP_TAILQ_LAST( &li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_priv,
870 LDAP_TAILQ_REMOVE( &li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_priv,
872 LDAP_TAILQ_ENTRY_INIT( lc, lc_q );
873 LDAP_TAILQ_INSERT_TAIL( &li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_priv,
877 } else if ( !LDAP_BACK_USE_TEMPORARIES( li )
878 && li->li_conn_priv[ LDAP_BACK_CONN2PRIV( &lc_curr ) ].lic_num == li->li_conn_priv_max )
880 lc = LDAP_TAILQ_FIRST( &li->li_conn_priv[ LDAP_BACK_CONN2PRIV( &lc_curr ) ].lic_priv );
885 /* Searches for a ldapconn in the avl tree */
886 lc = (ldapconn_t *)avl_find( li->li_conninfo.lai_tree,
887 (caddr_t)&lc_curr, ldap_back_conndn_cmp );
891 /* Don't reuse connections while they're still binding */
892 if ( LDAP_BACK_CONN_BINDING( lc ) ) {
893 if ( !LDAP_BACK_USE_TEMPORARIES( li ) ) {
894 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
896 ldap_pvt_thread_yield();
903 if ( op->o_tag == LDAP_REQ_BIND ) {
904 /* right now, this is the only possible case */
905 assert( ( li->li_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) );
906 LDAP_BACK_CONN_BINDING_SET( lc );
909 refcnt = ++lc->lc_refcnt;
912 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
915 /* Looks like we didn't get a bind. Open a new session... */
917 lc = (ldapconn_t *)ch_calloc( 1, sizeof( ldapconn_t ) );
918 lc->lc_flags = li->li_flags;
919 lc->lc_lcflags = lc_curr.lc_lcflags;
920 if ( ldap_back_prepare_conn( lc, op, rs, sendok ) != LDAP_SUCCESS ) {
925 if ( sendok & LDAP_BACK_BINDING ) {
926 LDAP_BACK_CONN_BINDING_SET( lc );
929 lc->lc_conn = lc_curr.lc_conn;
930 ber_dupbv( &lc->lc_local_ndn, &lc_curr.lc_local_ndn );
933 * the rationale is: connections as the rootdn are privileged,
934 * so acl_authcDN is to be used; however, in some cases
935 * one already configured identity assertion with a highly
936 * privileged idassert_authcDN, so if acl_authcDN is NULL
937 * and idassert_authcDN is not, use the second instead.
939 * might change in the future, because it's preferable
940 * to make clear what identity is being used, since
941 * the only drawback is that one risks to configure
942 * the same identity twice...
944 if ( LDAP_BACK_CONN_ISPRIV( &lc_curr ) ) {
945 if ( BER_BVISNULL( &li->li_acl_authcDN ) && !BER_BVISNULL( &li->li_idassert_authcDN ) ) {
946 ber_dupbv( &lc->lc_bound_ndn, &li->li_idassert_authcDN );
947 ber_dupbv( &lc->lc_cred, &li->li_idassert_passwd );
950 ber_dupbv( &lc->lc_bound_ndn, &li->li_acl_authcDN );
951 ber_dupbv( &lc->lc_cred, &li->li_acl_passwd );
953 LDAP_BACK_CONN_ISPRIV_SET( lc );
955 } else if ( LDAP_BACK_CONN_ISIDASSERT( &lc_curr ) ) {
956 if ( !LDAP_BACK_PCONN_ISBIND( &lc_curr ) ) {
957 ber_dupbv( &lc->lc_bound_ndn, &li->li_idassert_authcDN );
958 ber_dupbv( &lc->lc_cred, &li->li_idassert_passwd );
960 LDAP_BACK_CONN_ISIDASSERT_SET( lc );
963 BER_BVZERO( &lc->lc_cred );
964 BER_BVZERO( &lc->lc_bound_ndn );
965 if ( !BER_BVISEMPTY( &op->o_ndn )
966 && SLAP_IS_AUTHZ_BACKEND( op ) )
968 ber_dupbv( &lc->lc_bound_ndn, &op->o_ndn );
973 /* if start TLS failed but it was not mandatory,
974 * check if the non-TLS connection was already
975 * in cache; in case, destroy the newly created
976 * connection and use the existing one */
977 if ( LDAP_BACK_PCONN_ISTLS( lc )
978 && !ldap_tls_inplace( lc->lc_ld ) )
980 ldapconn_t *tmplc = NULL;
981 int idx = LDAP_BACK_CONN2PRIV( &lc_curr ) - 1;
983 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
984 LDAP_TAILQ_FOREACH( tmplc,
985 &li->li_conn_priv[ idx ].lic_priv,
988 if ( !LDAP_BACK_CONN_BINDING( tmplc ) ) {
993 if ( tmplc != NULL ) {
994 refcnt = ++tmplc->lc_refcnt;
995 ldap_back_conn_free( lc );
998 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1000 if ( tmplc != NULL ) {
1004 #endif /* HAVE_TLS */
1006 /* Inserts the newly created ldapconn in the avl tree */
1007 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1009 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1011 assert( lc->lc_refcnt == 1 );
1013 #if LDAP_BACK_PRINT_CONNTREE > 0
1014 ldap_back_print_conntree( li, ">>> ldap_back_getconn(insert)" );
1015 #endif /* LDAP_BACK_PRINT_CONNTREE */
1017 if ( LDAP_BACK_PCONN_ISPRIV( lc ) ) {
1018 if ( li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_num < li->li_conn_priv_max ) {
1019 LDAP_TAILQ_INSERT_TAIL( &li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_priv, lc, lc_q );
1020 li->li_conn_priv[ LDAP_BACK_CONN2PRIV( lc ) ].lic_num++;
1021 LDAP_BACK_CONN_CACHED_SET( lc );
1024 LDAP_BACK_CONN_TAINTED_SET( lc );
1029 rs->sr_err = avl_insert( &li->li_conninfo.lai_tree, (caddr_t)lc,
1030 ldap_back_conndn_cmp, ldap_back_conndn_dup );
1031 LDAP_BACK_CONN_CACHED_SET( lc );
1034 #if LDAP_BACK_PRINT_CONNTREE > 0
1035 ldap_back_print_conntree( li, "<<< ldap_back_getconn(insert)" );
1036 #endif /* LDAP_BACK_PRINT_CONNTREE */
1038 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1040 if ( LogTest( LDAP_DEBUG_TRACE ) ) {
1041 char buf[ SLAP_TEXT_BUFLEN ];
1043 snprintf( buf, sizeof( buf ),
1044 "lc=%p inserted refcnt=%u rc=%d",
1045 (void *)lc, refcnt, rs->sr_err );
1047 Debug( LDAP_DEBUG_TRACE,
1048 "=>ldap_back_getconn: %s: %s\n",
1049 op->o_log_prefix, buf, 0 );
1052 if ( !LDAP_BACK_PCONN_ISPRIV( lc ) ) {
1053 /* Err could be -1 in case a duplicate ldapconn is inserted */
1054 switch ( rs->sr_err ) {
1059 LDAP_BACK_CONN_CACHED_CLEAR( lc );
1060 if ( !( sendok & LDAP_BACK_BINDING ) && !LDAP_BACK_USE_TEMPORARIES( li ) ) {
1061 /* duplicate: free and try to get the newly created one */
1062 ldap_back_conn_free( lc );
1067 /* taint connection, so that it'll be freed when released */
1068 LDAP_BACK_CONN_TAINTED_SET( lc );
1072 LDAP_BACK_CONN_CACHED_CLEAR( lc );
1073 ldap_back_conn_free( lc );
1074 rs->sr_err = LDAP_OTHER;
1075 rs->sr_text = "Proxy bind collision";
1076 if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
1077 send_ldap_result( op, rs );
1086 if ( ( li->li_idle_timeout != 0 && op->o_time > lc->lc_time + li->li_idle_timeout )
1087 || ( li->li_conn_ttl != 0 && op->o_time > lc->lc_create_time + li->li_conn_ttl ) )
1091 /* let it be used, but taint/delete it so that
1092 * no-one else can look it up any further */
1093 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1095 #if LDAP_BACK_PRINT_CONNTREE > 0
1096 ldap_back_print_conntree( li, ">>> ldap_back_getconn(timeout)" );
1097 #endif /* LDAP_BACK_PRINT_CONNTREE */
1099 (void)ldap_back_conn_delete( li, lc );
1100 LDAP_BACK_CONN_TAINTED_SET( lc );
1102 #if LDAP_BACK_PRINT_CONNTREE > 0
1103 ldap_back_print_conntree( li, "<<< ldap_back_getconn(timeout)" );
1104 #endif /* LDAP_BACK_PRINT_CONNTREE */
1106 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1109 if ( LogTest( LDAP_DEBUG_TRACE ) ) {
1110 char buf[ SLAP_TEXT_BUFLEN ];
1112 snprintf( buf, sizeof( buf ),
1113 "conn %p fetched refcnt=%u%s",
1115 expiring ? " expiring" : "" );
1116 Debug( LDAP_DEBUG_TRACE,
1117 "=>ldap_back_getconn: %s.\n", buf, 0, 0 );
1123 #endif /* HAVE_TLS */
1129 ldap_back_release_conn_lock(
1135 ldapconn_t *lc = *lcp;
1138 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1140 assert( lc->lc_refcnt > 0 );
1141 LDAP_BACK_CONN_BINDING_CLEAR( lc );
1143 if ( LDAP_BACK_CONN_TAINTED( lc ) ) {
1144 ldap_back_freeconn( li, lc, 0 );
1148 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1153 ldap_back_quarantine(
1157 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1159 slap_retry_info_t *ri = &li->li_quarantine;
1161 ldap_pvt_thread_mutex_lock( &li->li_quarantine_mutex );
1163 if ( rs->sr_err == LDAP_UNAVAILABLE ) {
1164 time_t new_last = slap_get_time();
1166 switch ( li->li_isquarantined ) {
1167 case LDAP_BACK_FQ_NO:
1168 if ( ri->ri_last == new_last ) {
1172 Debug( LDAP_DEBUG_ANY,
1173 "%s: ldap_back_quarantine enter.\n",
1174 op->o_log_prefix, 0, 0 );
1180 case LDAP_BACK_FQ_RETRYING:
1181 Debug( LDAP_DEBUG_ANY,
1182 "%s: ldap_back_quarantine block #%d try #%d failed.\n",
1183 op->o_log_prefix, ri->ri_idx, ri->ri_count );
1186 if ( ri->ri_num[ ri->ri_idx ] != SLAP_RETRYNUM_FOREVER
1187 && ri->ri_count == ri->ri_num[ ri->ri_idx ] )
1198 li->li_isquarantined = LDAP_BACK_FQ_YES;
1199 ri->ri_last = new_last;
1201 } else if ( li->li_isquarantined != LDAP_BACK_FQ_NO ) {
1202 if ( ri->ri_last == slap_get_time() ) {
1206 Debug( LDAP_DEBUG_ANY,
1207 "%s: ldap_back_quarantine exit (%d) err=%d.\n",
1208 op->o_log_prefix, li->li_isquarantined, rs->sr_err );
1210 if ( li->li_quarantine_f ) {
1211 (void)li->li_quarantine_f( li, li->li_quarantine_p );
1216 li->li_isquarantined = LDAP_BACK_FQ_NO;
1220 ldap_pvt_thread_mutex_unlock( &li->li_quarantine_mutex );
1224 ldap_back_dobind_cb(
1229 ber_tag_t *tptr = op->o_callback->sc_private;
1231 return SLAP_CB_CONTINUE;
1235 * ldap_back_dobind_int
1237 * Note: dolock indicates whether li->li_conninfo.lai_mutex must be locked or not
1240 ldap_back_dobind_int(
1244 ldap_back_send_t sendok,
1248 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1251 struct berval binddn = slap_empty_bv,
1252 bindcred = slap_empty_bv;
1258 ber_tag_t o_tag = op->o_tag;
1259 slap_callback cb = {0};
1261 assert( lcp != NULL );
1262 assert( retries >= 0 );
1264 if ( sendok & LDAP_BACK_GETCONN ) {
1265 assert( *lcp == NULL );
1267 lc = ldap_back_getconn( op, rs, sendok, &binddn, &bindcred );
1277 assert( lc != NULL );
1281 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1284 if ( binding == 0 ) {
1285 /* check if already bound */
1286 rc = isbound = LDAP_BACK_CONN_ISBOUND( lc );
1289 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1294 if ( LDAP_BACK_CONN_BINDING( lc ) ) {
1295 /* if someone else is about to bind it, give up and retry */
1297 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1299 ldap_pvt_thread_yield();
1303 /* otherwise this thread will bind it */
1304 LDAP_BACK_CONN_BINDING_SET( lc );
1310 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1314 * FIXME: we need to let clients use proxyAuthz
1315 * otherwise we cannot do symmetric pools of servers;
1316 * we have to live with the fact that a user can
1317 * authorize itself as any ID that is allowed
1318 * by the authzTo directive of the "proxyauthzdn".
1321 * NOTE: current Proxy Authorization specification
1322 * and implementation do not allow proxy authorization
1323 * control to be provided with Bind requests
1326 * if no bind took place yet, but the connection is bound
1327 * and the "idassert-authcDN" (or other ID) is set,
1328 * then bind as the asserting identity and explicitly
1329 * add the proxyAuthz control to every operation with the
1330 * dn bound to the connection as control value.
1331 * This is done also if this is the authorizing backend,
1332 * but the "override" flag is given to idassert.
1333 * It allows to use SASL bind and yet proxyAuthz users
1335 op->o_tag = LDAP_REQ_BIND;
1336 cb.sc_next = op->o_callback;
1337 cb.sc_private = &o_tag;
1338 cb.sc_response = ldap_back_dobind_cb;
1339 op->o_callback = &cb;
1341 if ( LDAP_BACK_CONN_ISIDASSERT( lc ) ) {
1342 if ( BER_BVISEMPTY( &binddn ) && BER_BVISEMPTY( &bindcred ) ) {
1343 /* if we got here, it shouldn't return result */
1344 rc = ldap_back_is_proxy_authz( op, rs,
1345 LDAP_BACK_DONTSEND, &binddn, &bindcred );
1348 rc = ldap_back_proxy_authz_bind( lc, op, rs, sendok, &binddn, &bindcred );
1352 #ifdef HAVE_CYRUS_SASL
1353 if ( LDAP_BACK_CONN_ISPRIV( lc )
1354 && li->li_acl_authmethod == LDAP_AUTH_SASL )
1356 void *defaults = NULL;
1358 if ( li->li_acl_secprops != NULL ) {
1359 rc = ldap_set_option( lc->lc_ld,
1360 LDAP_OPT_X_SASL_SECPROPS, li->li_acl_secprops );
1362 if ( rc != LDAP_OPT_SUCCESS ) {
1363 Debug( LDAP_DEBUG_ANY, "Error: ldap_set_option "
1364 "(SECPROPS,\"%s\") failed!\n",
1365 li->li_acl_secprops, 0, 0 );
1370 defaults = lutil_sasl_defaults( lc->lc_ld,
1371 li->li_acl_sasl_mech.bv_val,
1372 li->li_acl_sasl_realm.bv_val,
1373 li->li_acl_authcID.bv_val,
1374 li->li_acl_passwd.bv_val,
1376 if ( defaults == NULL ) {
1377 rs->sr_err = LDAP_OTHER;
1378 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1379 if ( sendok & LDAP_BACK_SENDERR ) {
1380 send_ldap_result( op, rs );
1385 rs->sr_err = ldap_sasl_interactive_bind_s( lc->lc_ld,
1386 li->li_acl_authcDN.bv_val,
1387 li->li_acl_sasl_mech.bv_val, NULL, NULL,
1388 LDAP_SASL_QUIET, lutil_sasl_interact,
1391 lutil_sasl_freedefs( defaults );
1393 rs->sr_err = slap_map_api2result( rs );
1394 if ( rs->sr_err != LDAP_SUCCESS ) {
1395 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1396 if ( sendok & LDAP_BACK_SENDERR ) {
1397 send_ldap_result( op, rs );
1401 LDAP_BACK_CONN_ISBOUND_SET( lc );
1404 if ( LDAP_BACK_QUARANTINE( li ) ) {
1405 ldap_back_quarantine( op, rs );
1410 #endif /* HAVE_CYRUS_SASL */
1413 rs->sr_err = ldap_sasl_bind( lc->lc_ld,
1414 BER_BVISNULL( &lc->lc_cred ) ? "" : lc->lc_bound_ndn.bv_val,
1415 LDAP_SASL_SIMPLE, &lc->lc_cred,
1416 NULL, NULL, &msgid );
1418 if ( rs->sr_err == LDAP_SERVER_DOWN ) {
1419 if ( retries != LDAP_BACK_RETRY_NEVER ) {
1421 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1424 assert( lc->lc_refcnt > 0 );
1425 if ( lc->lc_refcnt == 1 ) {
1426 ldap_unbind_ext( lc->lc_ld, NULL, NULL );
1429 /* lc here must be the regular lc, reset and ready for init */
1430 rs->sr_err = ldap_back_prepare_conn( lc, op, rs, sendok );
1431 if ( rs->sr_err != LDAP_SUCCESS ) {
1432 sendok &= ~LDAP_BACK_SENDERR;
1438 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1441 if ( rs->sr_err == LDAP_SUCCESS ) {
1442 if ( retries > 0 ) {
1449 assert( lc->lc_refcnt == 1 );
1451 ldap_back_freeconn( li, lc, dolock );
1453 rs->sr_err = slap_map_api2result( rs );
1455 if ( LDAP_BACK_QUARANTINE( li ) ) {
1456 ldap_back_quarantine( op, rs );
1459 if ( rs->sr_err != LDAP_SUCCESS &&
1460 ( sendok & LDAP_BACK_SENDERR ) )
1462 if ( op->o_callback == &cb )
1463 op->o_callback = cb.sc_next;
1465 rs->sr_text = "Proxy can't contact remote server";
1466 send_ldap_result( op, rs );
1473 rc = ldap_back_op_result( lc, op, rs, msgid,
1474 -1, ( sendok | LDAP_BACK_BINDING ) );
1475 if ( rc == LDAP_SUCCESS ) {
1476 LDAP_BACK_CONN_ISBOUND_SET( lc );
1480 LDAP_BACK_CONN_BINDING_CLEAR( lc );
1481 rc = LDAP_BACK_CONN_ISBOUND( lc );
1483 ldap_back_release_conn_lock( li, lcp, dolock );
1485 } else if ( LDAP_BACK_SAVECRED( li ) ) {
1486 ldap_set_rebind_proc( lc->lc_ld, li->li_rebind_f, lc );
1490 if ( op->o_callback == &cb )
1491 op->o_callback = cb.sc_next;
1500 * Note: dolock indicates whether li->li_conninfo.lai_mutex must be locked or not
1503 ldap_back_dobind( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
1505 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1507 return ldap_back_dobind_int( lcp, op, rs,
1508 ( sendok | LDAP_BACK_GETCONN ), li->li_nretries, 1 );
1512 * ldap_back_default_rebind
1514 * This is a callback used for chasing referrals using the same
1515 * credentials as the original user on this session.
1518 ldap_back_default_rebind( LDAP *ld, LDAP_CONST char *url, ber_tag_t request,
1519 ber_int_t msgid, void *params )
1521 ldapconn_t *lc = (ldapconn_t *)params;
1524 /* ... otherwise we couldn't get here */
1525 assert( lc != NULL );
1527 if ( !ldap_tls_inplace( ld ) ) {
1528 int is_tls = LDAP_BACK_CONN_ISTLS( lc ),
1530 const char *text = NULL;
1532 rc = ldap_back_start_tls( ld, 0, &is_tls, url, lc->lc_flags,
1533 LDAP_BACK_RETRY_DEFAULT, &text );
1534 if ( rc != LDAP_SUCCESS ) {
1538 #endif /* HAVE_TLS */
1540 /* FIXME: add checks on the URL/identity? */
1542 return ldap_sasl_bind_s( ld,
1543 BER_BVISNULL( &lc->lc_cred ) ? "" : lc->lc_bound_ndn.bv_val,
1544 LDAP_SASL_SIMPLE, &lc->lc_cred, NULL, NULL, NULL );
1548 * ldap_back_default_urllist
1551 ldap_back_default_urllist(
1553 LDAPURLDesc **urllist,
1557 ldapinfo_t *li = (ldapinfo_t *)params;
1558 LDAPURLDesc **urltail;
1560 if ( urllist == url ) {
1561 return LDAP_SUCCESS;
1564 for ( urltail = &(*url)->lud_next; *urltail; urltail = &(*urltail)->lud_next )
1567 *urltail = *urllist;
1571 ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
1573 ch_free( li->li_uri );
1576 ldap_get_option( ld, LDAP_OPT_URI, (void *)&li->li_uri );
1577 ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
1579 return LDAP_SUCCESS;
1588 ldap_back_send_t sendok )
1590 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1592 /* default behavior */
1593 if ( LDAP_BACK_ABANDON( li ) ) {
1594 return ldap_abandon_ext( lc->lc_ld, msgid, NULL, NULL );
1597 if ( LDAP_BACK_IGNORE( li ) ) {
1598 return ldap_pvt_discard( lc->lc_ld, msgid );
1601 if ( LDAP_BACK_CANCEL( li ) ) {
1602 /* FIXME: asynchronous? */
1603 return ldap_cancel_s( lc->lc_ld, msgid, NULL, NULL );
1612 ldap_back_op_result(
1618 ldap_back_send_t sendok )
1620 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1625 LDAPControl **ctrls = NULL;
1627 #define ERR_OK(err) ((err) == LDAP_SUCCESS || (err) == LDAP_COMPARE_FALSE || (err) == LDAP_COMPARE_TRUE)
1630 rs->sr_matched = NULL;
1632 rs->sr_ctrls = NULL;
1634 /* if the error recorded in the reply corresponds
1635 * to a successful state, get the error from the
1636 * remote server response */
1637 if ( ERR_OK( rs->sr_err ) ) {
1640 LDAPMessage *res = NULL;
1641 time_t stoptime = (time_t)(-1);
1642 int timeout_err = op->o_protocol >= LDAP_VERSION3 ?
1643 LDAP_ADMINLIMIT_EXCEEDED : LDAP_OTHER;
1644 const char *timeout_text = "Operation timed out";
1646 /* if timeout is not specified, compute and use
1647 * the one specific to the ongoing operation */
1648 if ( timeout == (time_t)(-1) ) {
1649 slap_op_t opidx = slap_req2op( op->o_tag );
1651 if ( opidx == SLAP_OP_SEARCH ) {
1652 if ( op->ors_tlimit <= 0 ) {
1656 timeout = op->ors_tlimit;
1657 timeout_err = LDAP_TIMELIMIT_EXCEEDED;
1658 timeout_text = NULL;
1662 timeout = li->li_timeout[ opidx ];
1666 /* better than nothing :) */
1667 if ( timeout == 0 ) {
1668 if ( li->li_idle_timeout ) {
1669 timeout = li->li_idle_timeout;
1671 } else if ( li->li_conn_ttl ) {
1672 timeout = li->li_conn_ttl;
1677 stoptime = op->o_time + timeout;
1680 LDAP_BACK_TV_SET( &tv );
1683 /* if result parsing fails, note the failure reason */
1684 rc = ldap_result( lc->lc_ld, msgid, LDAP_MSG_ALL, &tv, &res );
1687 if ( timeout && slap_get_time() > stoptime ) {
1688 if ( sendok & LDAP_BACK_BINDING ) {
1689 ldap_unbind_ext( lc->lc_ld, NULL, NULL );
1692 /* let it be used, but taint/delete it so that
1693 * no-one else can look it up any further */
1694 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1696 #if LDAP_BACK_PRINT_CONNTREE > 0
1697 ldap_back_print_conntree( li, ">>> ldap_back_getconn(timeout)" );
1698 #endif /* LDAP_BACK_PRINT_CONNTREE */
1700 (void)ldap_back_conn_delete( li, lc );
1701 LDAP_BACK_CONN_TAINTED_SET( lc );
1703 #if LDAP_BACK_PRINT_CONNTREE > 0
1704 ldap_back_print_conntree( li, "<<< ldap_back_getconn(timeout)" );
1705 #endif /* LDAP_BACK_PRINT_CONNTREE */
1706 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1709 (void)ldap_back_cancel( lc, op, rs, msgid, sendok );
1711 rs->sr_err = timeout_err;
1712 rs->sr_text = timeout_text;
1717 LDAP_BACK_TV_SET( &tv );
1718 ldap_pvt_thread_yield();
1722 ldap_get_option( lc->lc_ld, LDAP_OPT_ERROR_NUMBER,
1727 /* otherwise get the result; if it is not
1728 * LDAP_SUCCESS, record it in the reply
1729 * structure (this includes
1730 * LDAP_COMPARE_{TRUE|FALSE}) */
1732 /* only touch when activity actually took place... */
1733 if ( li->li_idle_timeout && lc ) {
1734 lc->lc_time = op->o_time;
1737 rc = ldap_parse_result( lc->lc_ld, res, &rs->sr_err,
1738 &match, &text, &refs, &ctrls, 1 );
1740 if ( rc != LDAP_SUCCESS ) {
1744 /* RFC 4511: referrals can only appear
1745 * if result code is LDAP_REFERRAL */
1747 && refs[ 0 ] != NULL
1748 && refs[ 0 ][ 0 ] != '\0' )
1750 if ( rs->sr_err != LDAP_REFERRAL ) {
1751 Debug( LDAP_DEBUG_ANY,
1752 "%s ldap_back_op_result: "
1753 "got referrals with err=%d\n",
1760 for ( i = 0; refs[ i ] != NULL; i++ )
1762 rs->sr_ref = op->o_tmpalloc( sizeof( struct berval ) * ( i + 1 ),
1764 for ( i = 0; refs[ i ] != NULL; i++ ) {
1765 ber_str2bv( refs[ i ], 0, 0, &rs->sr_ref[ i ] );
1767 BER_BVZERO( &rs->sr_ref[ i ] );
1770 } else if ( rs->sr_err == LDAP_REFERRAL ) {
1771 Debug( LDAP_DEBUG_ANY,
1772 "%s ldap_back_op_result: "
1773 "got err=%d with null "
1774 "or empty referrals\n",
1778 rs->sr_err = LDAP_NO_SUCH_OBJECT;
1781 if ( ctrls != NULL ) {
1782 rs->sr_ctrls = ctrls;
1787 /* if the error in the reply structure is not
1788 * LDAP_SUCCESS, try to map it from client
1789 * to server error */
1790 if ( !ERR_OK( rs->sr_err ) ) {
1791 rs->sr_err = slap_map_api2result( rs );
1793 /* internal ops ( op->o_conn == NULL )
1794 * must not reply to client */
1795 if ( op->o_conn && !op->o_do_not_cache && match ) {
1797 /* record the (massaged) matched
1798 * DN into the reply structure */
1799 rs->sr_matched = match;
1803 if ( rs->sr_err == LDAP_UNAVAILABLE ) {
1804 if ( !( sendok & LDAP_BACK_RETRYING ) ) {
1805 if ( LDAP_BACK_QUARANTINE( li ) ) {
1806 ldap_back_quarantine( op, rs );
1808 if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
1809 if ( rs->sr_text == NULL ) rs->sr_text = "Proxy operation retry failed";
1810 send_ldap_result( op, rs );
1814 } else if ( op->o_conn &&
1815 ( ( ( sendok & LDAP_BACK_SENDOK ) && ERR_OK( rs->sr_err ) )
1816 || ( ( sendok & LDAP_BACK_SENDERR ) && rs->sr_err != LDAP_SUCCESS ) ) )
1818 send_ldap_result( op, rs );
1822 if ( rs->sr_matched != match ) {
1823 free( (char *)rs->sr_matched );
1825 rs->sr_matched = NULL;
1826 ldap_memfree( match );
1830 ldap_memfree( text );
1835 op->o_tmpfree( rs->sr_ref, op->o_tmpmemctx );
1840 ber_memvfree( (void **)refs );
1844 assert( rs->sr_ctrls != NULL );
1845 ldap_controls_free( ctrls );
1846 rs->sr_ctrls = NULL;
1849 return( ERR_OK( rs->sr_err ) ? LDAP_SUCCESS : rs->sr_err );
1852 /* return true if bound, false if failed */
1854 ldap_back_retry( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
1856 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1859 assert( lcp != NULL );
1860 assert( *lcp != NULL );
1862 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1864 if ( (*lcp)->lc_refcnt == 1 ) {
1865 int binding = LDAP_BACK_CONN_BINDING( *lcp );
1867 ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
1868 Debug( LDAP_DEBUG_ANY,
1869 "%s ldap_back_retry: retrying URI=\"%s\" DN=\"%s\"\n",
1870 op->o_log_prefix, li->li_uri,
1871 BER_BVISNULL( &(*lcp)->lc_bound_ndn ) ?
1872 "" : (*lcp)->lc_bound_ndn.bv_val );
1873 ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
1875 ldap_unbind_ext( (*lcp)->lc_ld, NULL, NULL );
1876 (*lcp)->lc_ld = NULL;
1877 LDAP_BACK_CONN_ISBOUND_CLEAR( (*lcp) );
1879 /* lc here must be the regular lc, reset and ready for init */
1880 rc = ldap_back_prepare_conn( *lcp, op, rs, sendok );
1881 if ( rc != LDAP_SUCCESS ) {
1882 /* freeit, because lc_refcnt == 1 */
1883 (*lcp)->lc_refcnt = 0;
1884 (void)ldap_back_freeconn( li, *lcp, 0 );
1888 } else if ( ( sendok & LDAP_BACK_BINDING ) ) {
1890 LDAP_BACK_CONN_BINDING_SET( *lcp );
1895 rc = ldap_back_dobind_int( lcp, op, rs, sendok, 0, 0 );
1896 if ( rc == 0 && *lcp != NULL ) {
1897 /* freeit, because lc_refcnt == 1 */
1898 (*lcp)->lc_refcnt = 0;
1899 LDAP_BACK_CONN_TAINTED_SET( *lcp );
1900 (void)ldap_back_freeconn( li, *lcp, 0 );
1906 Debug( LDAP_DEBUG_TRACE,
1907 "ldap_back_retry: conn %p refcnt=%u unable to retry.\n",
1908 (void *)(*lcp), (*lcp)->lc_refcnt, 0 );
1910 LDAP_BACK_CONN_TAINTED_SET( *lcp );
1911 ldap_back_release_conn_lock( li, lcp, 0 );
1912 assert( *lcp == NULL );
1914 if ( sendok & LDAP_BACK_SENDERR ) {
1915 rs->sr_err = LDAP_UNAVAILABLE;
1916 rs->sr_text = "Unable to retry";
1917 send_ldap_result( op, rs );
1921 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1927 ldap_back_is_proxy_authz( Operation *op, SlapReply *rs, ldap_back_send_t sendok,
1928 struct berval *binddn, struct berval *bindcred )
1930 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1934 if ( op->o_conn == NULL || op->o_do_not_cache ) {
1938 /* don't proxyAuthz if protocol is not LDAPv3 */
1939 switch ( li->li_version ) {
1944 if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
1950 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1951 if ( sendok & LDAP_BACK_SENDERR ) {
1952 send_ldap_result( op, rs );
1959 *binddn = slap_empty_bv;
1960 *bindcred = slap_empty_bv;
1962 if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
1963 ndn = op->o_conn->c_ndn;
1969 switch ( li->li_idassert_mode ) {
1970 case LDAP_BACK_IDASSERT_LEGACY:
1971 if ( !BER_BVISNULL( &ndn ) && !BER_BVISEMPTY( &ndn ) ) {
1972 if ( !BER_BVISNULL( &li->li_idassert_authcDN ) && !BER_BVISEMPTY( &li->li_idassert_authcDN ) )
1974 *binddn = li->li_idassert_authcDN;
1975 *bindcred = li->li_idassert_passwd;
1982 /* NOTE: rootdn can always idassert */
1983 if ( BER_BVISNULL( &ndn )
1984 && li->li_idassert_authz == NULL
1985 && !( li->li_idassert_flags & LDAP_BACK_AUTH_AUTHZ_ALL ) )
1987 if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
1988 rs->sr_err = LDAP_INAPPROPRIATE_AUTH;
1989 if ( sendok & LDAP_BACK_SENDERR ) {
1990 send_ldap_result( op, rs );
1995 rs->sr_err = LDAP_SUCCESS;
1996 *binddn = slap_empty_bv;
1997 *bindcred = slap_empty_bv;
2003 } else if ( li->li_idassert_authz && !be_isroot( op ) ) {
2004 struct berval authcDN;
2006 if ( BER_BVISNULL( &ndn ) ) {
2007 authcDN = slap_empty_bv;
2012 rs->sr_err = slap_sasl_matches( op, li->li_idassert_authz,
2013 &authcDN, &authcDN );
2014 if ( rs->sr_err != LDAP_SUCCESS ) {
2015 if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
2016 if ( sendok & LDAP_BACK_SENDERR ) {
2017 send_ldap_result( op, rs );
2022 rs->sr_err = LDAP_SUCCESS;
2023 *binddn = slap_empty_bv;
2024 *bindcred = slap_empty_bv;
2032 *binddn = li->li_idassert_authcDN;
2033 *bindcred = li->li_idassert_passwd;
2043 ldap_back_proxy_authz_bind(
2047 ldap_back_send_t sendok,
2048 struct berval *binddn,
2049 struct berval *bindcred )
2051 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
2056 if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
2057 ndn = op->o_conn->c_ndn;
2063 if ( li->li_idassert_authmethod == LDAP_AUTH_SASL ) {
2064 #ifdef HAVE_CYRUS_SASL
2065 void *defaults = NULL;
2066 struct berval authzID = BER_BVNULL;
2069 /* if SASL supports native authz, prepare for it */
2070 if ( ( !op->o_do_not_cache || !op->o_is_auth_check ) &&
2071 ( li->li_idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) )
2073 switch ( li->li_idassert_mode ) {
2074 case LDAP_BACK_IDASSERT_OTHERID:
2075 case LDAP_BACK_IDASSERT_OTHERDN:
2076 authzID = li->li_idassert_authzID;
2079 case LDAP_BACK_IDASSERT_ANONYMOUS:
2080 BER_BVSTR( &authzID, "dn:" );
2083 case LDAP_BACK_IDASSERT_SELF:
2084 if ( BER_BVISNULL( &ndn ) ) {
2085 /* connection is not authc'd, so don't idassert */
2086 BER_BVSTR( &authzID, "dn:" );
2089 authzID.bv_len = STRLENOF( "dn:" ) + ndn.bv_len;
2090 authzID.bv_val = slap_sl_malloc( authzID.bv_len + 1, op->o_tmpmemctx );
2091 AC_MEMCPY( authzID.bv_val, "dn:", STRLENOF( "dn:" ) );
2092 AC_MEMCPY( authzID.bv_val + STRLENOF( "dn:" ),
2093 ndn.bv_val, ndn.bv_len + 1 );
2102 if ( li->li_idassert_secprops != NULL ) {
2103 rs->sr_err = ldap_set_option( lc->lc_ld,
2104 LDAP_OPT_X_SASL_SECPROPS,
2105 (void *)li->li_idassert_secprops );
2107 if ( rs->sr_err != LDAP_OPT_SUCCESS ) {
2108 rs->sr_err = LDAP_OTHER;
2109 if ( sendok & LDAP_BACK_SENDERR ) {
2110 send_ldap_result( op, rs );
2112 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
2117 defaults = lutil_sasl_defaults( lc->lc_ld,
2118 li->li_idassert_sasl_mech.bv_val,
2119 li->li_idassert_sasl_realm.bv_val,
2120 li->li_idassert_authcID.bv_val,
2121 li->li_idassert_passwd.bv_val,
2123 if ( defaults == NULL ) {
2124 rs->sr_err = LDAP_OTHER;
2125 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
2126 if ( sendok & LDAP_BACK_SENDERR ) {
2127 send_ldap_result( op, rs );
2132 rs->sr_err = ldap_sasl_interactive_bind_s( lc->lc_ld, binddn->bv_val,
2133 li->li_idassert_sasl_mech.bv_val, NULL, NULL,
2134 LDAP_SASL_QUIET, lutil_sasl_interact,
2137 rs->sr_err = slap_map_api2result( rs );
2138 if ( rs->sr_err != LDAP_SUCCESS ) {
2139 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
2140 if ( sendok & LDAP_BACK_SENDERR ) {
2141 send_ldap_result( op, rs );
2145 LDAP_BACK_CONN_ISBOUND_SET( lc );
2148 lutil_sasl_freedefs( defaults );
2150 slap_sl_free( authzID.bv_val, op->o_tmpmemctx );
2154 #endif /* HAVE_CYRUS_SASL */
2157 switch ( li->li_idassert_authmethod ) {
2158 case LDAP_AUTH_NONE:
2159 /* FIXME: do we really need this? */
2160 BER_BVSTR( binddn, "" );
2161 BER_BVSTR( bindcred, "" );
2164 case LDAP_AUTH_SIMPLE:
2165 rs->sr_err = ldap_sasl_bind( lc->lc_ld,
2166 binddn->bv_val, LDAP_SASL_SIMPLE,
2167 bindcred, NULL, NULL, &msgid );
2168 rc = ldap_back_op_result( lc, op, rs, msgid,
2169 -1, ( sendok | LDAP_BACK_BINDING ) );
2174 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
2175 rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
2176 if ( sendok & LDAP_BACK_SENDERR ) {
2177 send_ldap_result( op, rs );
2182 if ( rc == LDAP_SUCCESS ) {
2183 /* set rebind stuff in case of successful proxyAuthz bind,
2184 * so that referral chasing is attempted using the right
2186 LDAP_BACK_CONN_ISBOUND_SET( lc );
2187 ber_bvreplace( &lc->lc_bound_ndn, binddn );
2189 if ( !BER_BVISNULL( &lc->lc_cred ) ) {
2190 memset( lc->lc_cred.bv_val, 0,
2191 lc->lc_cred.bv_len );
2194 if ( LDAP_BACK_SAVECRED( li ) ) {
2195 ber_bvreplace( &lc->lc_cred, bindcred );
2196 ldap_set_rebind_proc( lc->lc_ld, li->li_rebind_f, lc );
2199 lc->lc_cred.bv_len = 0;
2203 return LDAP_BACK_CONN_ISBOUND( lc );
2207 * ldap_back_proxy_authz_ctrl() prepends a proxyAuthz control
2208 * to existing server-side controls if required; if not,
2209 * the existing server-side controls are placed in *pctrls.
2210 * The caller, after using the controls in client API
2211 * operations, if ( *pctrls != op->o_ctrls ), should
2212 * free( (*pctrls)[ 0 ] ) and free( *pctrls ).
2213 * The function returns success if the control could
2214 * be added if required, or if it did nothing; in the future,
2215 * it might return some error if it failed.
2217 * if no bind took place yet, but the connection is bound
2218 * and the "proxyauthzdn" is set, then bind as "proxyauthzdn"
2219 * and explicitly add proxyAuthz the control to every operation
2220 * with the dn bound to the connection as control value.
2222 * If no server-side controls are defined for the operation,
2223 * simply add the proxyAuthz control; otherwise, if the
2224 * proxyAuthz control is not already set, add it as
2227 * FIXME: is controls order significant for security?
2228 * ANSWER: controls ordering and interoperability
2229 * must be indicated by the specs of each control; if none
2230 * is specified, the order is irrelevant.
2233 ldap_back_proxy_authz_ctrl(
2236 struct berval *bound_ndn,
2238 slap_idassert_t *si,
2241 slap_idassert_mode_t mode;
2242 struct berval assertedID,
2246 rs->sr_err = SLAP_CB_CONTINUE;
2248 /* FIXME: SASL/EXTERNAL over ldapi:// doesn't honor the authcID,
2249 * but if it is not set this test fails. We need a different
2250 * means to detect if idassert is enabled */
2251 if ( ( BER_BVISNULL( &si->si_bc.sb_authcId ) || BER_BVISEMPTY( &si->si_bc.sb_authcId ) )
2252 && ( BER_BVISNULL( &si->si_bc.sb_binddn ) || BER_BVISEMPTY( &si->si_bc.sb_binddn ) )
2253 && BER_BVISNULL( &si->si_bc.sb_saslmech ) )
2258 if ( !op->o_conn || op->o_do_not_cache || ( isroot = be_isroot( op ) ) ) {
2262 if ( op->o_tag == LDAP_REQ_BIND ) {
2263 ndn = op->o_req_ndn;
2265 } else if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
2266 ndn = op->o_conn->c_ndn;
2272 if ( si->si_mode == LDAP_BACK_IDASSERT_LEGACY ) {
2273 if ( op->o_proxy_authz ) {
2275 * FIXME: we do not want to perform proxyAuthz
2276 * on behalf of the client, because this would
2277 * be performed with "proxyauthzdn" privileges.
2279 * This might actually be too strict, since
2280 * the "proxyauthzdn" authzTo, and each entry's
2281 * authzFrom attributes may be crafted
2282 * to avoid unwanted proxyAuthz to take place.
2285 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
2286 rs->sr_text = "proxyAuthz not allowed within namingContext";
2291 if ( !BER_BVISNULL( bound_ndn ) ) {
2295 if ( BER_BVISNULL( &ndn ) ) {
2299 if ( BER_BVISNULL( &si->si_bc.sb_binddn ) ) {
2303 } else if ( si->si_bc.sb_method == LDAP_AUTH_SASL ) {
2304 if ( ( si->si_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) )
2306 /* already asserted in SASL via native authz */
2310 } else if ( si->si_authz && !isroot ) {
2312 struct berval authcDN;
2314 if ( BER_BVISNULL( &ndn ) ) {
2315 authcDN = slap_empty_bv;
2319 rc = slap_sasl_matches( op, si->si_authz,
2320 &authcDN, &authcDN );
2321 if ( rc != LDAP_SUCCESS ) {
2322 if ( si->si_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
2323 /* ndn is not authorized
2324 * to use idassert */
2331 if ( op->o_proxy_authz ) {
2334 * 1) ignore the already set proxyAuthz control
2335 * 2) leave it in place, and don't set ours
2337 * 4) reject the operation
2339 * option (4) is very drastic
2340 * option (3) will make the remote server reject
2341 * the operation, thus being equivalent to (4)
2342 * option (2) will likely break the idassert
2343 * assumptions, so we cannot accept it;
2344 * option (1) means that we are contradicting
2345 * the client's reques.
2347 * I think (4) is the only correct choice.
2349 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
2350 rs->sr_text = "proxyAuthz not allowed within namingContext";
2353 if ( op->o_is_auth_check ) {
2354 mode = LDAP_BACK_IDASSERT_NOASSERT;
2361 case LDAP_BACK_IDASSERT_LEGACY:
2362 /* original behavior:
2363 * assert the client's identity */
2364 case LDAP_BACK_IDASSERT_SELF:
2368 case LDAP_BACK_IDASSERT_ANONYMOUS:
2369 /* assert "anonymous" */
2370 assertedID = slap_empty_bv;
2373 case LDAP_BACK_IDASSERT_NOASSERT:
2374 /* don't assert; bind as proxyauthzdn */
2377 case LDAP_BACK_IDASSERT_OTHERID:
2378 case LDAP_BACK_IDASSERT_OTHERDN:
2379 /* assert idassert DN */
2380 assertedID = si->si_bc.sb_authzId;
2387 /* if we got here, "" is allowed to proxyAuthz */
2388 if ( BER_BVISNULL( &assertedID ) ) {
2389 assertedID = slap_empty_bv;
2392 /* don't idassert the bound DN (ITS#4497) */
2393 if ( dn_match( &assertedID, bound_ndn ) ) {
2397 ctrl->ldctl_oid = LDAP_CONTROL_PROXY_AUTHZ;
2399 switch ( si->si_mode ) {
2400 /* already in u:ID or dn:DN form */
2401 case LDAP_BACK_IDASSERT_OTHERID:
2402 case LDAP_BACK_IDASSERT_OTHERDN:
2403 ber_dupbv_x( &ctrl->ldctl_value, &assertedID, op->o_tmpmemctx );
2404 rs->sr_err = LDAP_SUCCESS;
2407 /* needs the dn: prefix */
2409 ctrl->ldctl_value.bv_len = assertedID.bv_len + STRLENOF( "dn:" );
2410 ctrl->ldctl_value.bv_val = op->o_tmpalloc( ctrl->ldctl_value.bv_len + 1,
2412 AC_MEMCPY( ctrl->ldctl_value.bv_val, "dn:", STRLENOF( "dn:" ) );
2413 AC_MEMCPY( &ctrl->ldctl_value.bv_val[ STRLENOF( "dn:" ) ],
2414 assertedID.bv_val, assertedID.bv_len + 1 );
2415 rs->sr_err = LDAP_SUCCESS;
2419 /* Older versions of <draft-weltman-ldapv3-proxy> required
2420 * to encode the value of the authzID (and called it proxyDN);
2421 * this hack provides compatibility with those DSAs that
2422 * implement it this way */
2423 if ( si->si_flags & LDAP_BACK_AUTH_OBSOLETE_ENCODING_WORKAROUND ) {
2424 struct berval authzID = ctrl->ldctl_value;
2425 BerElementBuffer berbuf;
2426 BerElement *ber = (BerElement *)&berbuf;
2429 ber_init2( ber, 0, LBER_USE_DER );
2430 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
2432 tag = ber_printf( ber, "O", &authzID );
2433 if ( tag == LBER_ERROR ) {
2434 rs->sr_err = LDAP_OTHER;
2438 if ( ber_flatten2( ber, &ctrl->ldctl_value, 1 ) == -1 ) {
2439 rs->sr_err = LDAP_OTHER;
2443 rs->sr_err = LDAP_SUCCESS;
2446 op->o_tmpfree( authzID.bv_val, op->o_tmpmemctx );
2447 ber_free_buf( ber );
2449 if ( rs->sr_err != LDAP_SUCCESS ) {
2453 } else if ( si->si_flags & LDAP_BACK_AUTH_OBSOLETE_PROXY_AUTHZ ) {
2454 struct berval authzID = ctrl->ldctl_value,
2456 BerElementBuffer berbuf;
2457 BerElement *ber = (BerElement *)&berbuf;
2460 if ( strncasecmp( authzID.bv_val, "dn:", STRLENOF( "dn:" ) ) != 0 ) {
2461 rs->sr_err = LDAP_PROTOCOL_ERROR;
2466 tmp.bv_val += STRLENOF( "dn:" );
2467 tmp.bv_len -= STRLENOF( "dn:" );
2469 ber_init2( ber, 0, LBER_USE_DER );
2470 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
2472 /* apparently, Mozilla API encodes this
2473 * as "SEQUENCE { LDAPDN }" */
2474 tag = ber_printf( ber, "{O}", &tmp );
2475 if ( tag == LBER_ERROR ) {
2476 rs->sr_err = LDAP_OTHER;
2480 if ( ber_flatten2( ber, &ctrl->ldctl_value, 1 ) == -1 ) {
2481 rs->sr_err = LDAP_OTHER;
2485 ctrl->ldctl_oid = LDAP_CONTROL_OBSOLETE_PROXY_AUTHZ;
2486 rs->sr_err = LDAP_SUCCESS;
2489 op->o_tmpfree( authzID.bv_val, op->o_tmpmemctx );
2490 ber_free_buf( ber );
2492 if ( rs->sr_err != LDAP_SUCCESS ) {
2505 * if any needs to be added, it is prepended to existing ones,
2506 * in a newly allocated array. The companion function
2507 * ldap_back_controls_free() must be used to restore the original
2508 * status of op->o_ctrls.
2511 ldap_back_controls_add(
2515 LDAPControl ***pctrls )
2517 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
2519 LDAPControl **ctrls = NULL;
2520 /* set to the maximum number of controls this backend can add */
2521 LDAPControl c[ 2 ] = { { 0 } };
2522 int n = 0, i, j1 = 0, j2 = 0;
2526 rs->sr_err = LDAP_SUCCESS;
2528 /* don't add controls if protocol is not LDAPv3 */
2529 switch ( li->li_version ) {
2534 if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
2543 /* put controls that go __before__ existing ones here */
2545 /* proxyAuthz for identity assertion */
2546 switch ( ldap_back_proxy_authz_ctrl( op, rs, &lc->lc_bound_ndn,
2547 li->li_version, &li->li_idassert, &c[ j1 ] ) )
2549 case SLAP_CB_CONTINUE:
2560 /* put controls that go __after__ existing ones here */
2562 #ifdef SLAP_CONTROL_X_SESSION_TRACKING
2563 /* FIXME: according to <draft-wahl-ldap-session>,
2564 * the server should check if the control can be added
2565 * based on the identity of the client and so */
2567 /* session tracking */
2568 if ( LDAP_BACK_ST_REQUEST( li ) ) {
2569 switch ( slap_ctrl_session_tracking_request_add( op, rs, &c[ j1 + j2 ] ) ) {
2570 case SLAP_CB_CONTINUE:
2581 #endif /* SLAP_CONTROL_X_SESSION_TRACKING */
2583 if ( rs->sr_err == SLAP_CB_CONTINUE ) {
2584 rs->sr_err = LDAP_SUCCESS;
2587 /* if nothing to do, just bail out */
2588 if ( j1 == 0 && j2 == 0 ) {
2592 assert( j1 + j1 <= sizeof( c )/sizeof(LDAPControl) );
2594 if ( op->o_ctrls ) {
2595 for ( n = 0; op->o_ctrls[ n ]; n++ )
2596 /* just count ctrls */ ;
2599 ctrls = op->o_tmpalloc( (n + j1 + j2 + 1) * sizeof( LDAPControl * ) + ( j1 + j2 ) * sizeof( LDAPControl ),
2602 ctrls[ 0 ] = (LDAPControl *)&ctrls[ n + j1 + j2 + 1 ];
2603 *ctrls[ 0 ] = c[ 0 ];
2604 for ( i = 1; i < j1; i++ ) {
2605 ctrls[ i ] = &ctrls[ 0 ][ i ];
2606 *ctrls[ i ] = c[ i ];
2611 if ( op->o_ctrls ) {
2612 for ( i = 0; op->o_ctrls[ i ]; i++ ) {
2613 ctrls[ i + j1 ] = op->o_ctrls[ i ];
2619 ctrls[ n ] = (LDAPControl *)&ctrls[ n + j2 + 1 ] + j1;
2620 *ctrls[ n ] = c[ j1 ];
2621 for ( i = 1; i < j2; i++ ) {
2622 ctrls[ n + i ] = &ctrls[ n ][ i ];
2623 *ctrls[ n + i ] = c[ i ];
2627 ctrls[ n + j2 ] = NULL;
2630 if ( ctrls == NULL ) {
2631 ctrls = op->o_ctrls;
2640 ldap_back_controls_free( Operation *op, SlapReply *rs, LDAPControl ***pctrls )
2642 LDAPControl **ctrls = *pctrls;
2644 /* we assume that the controls added by the proxy come first,
2645 * so as soon as we find op->o_ctrls[ 0 ] we can stop */
2646 if ( ctrls && ctrls != op->o_ctrls ) {
2647 int i = 0, n = 0, n_added;
2648 LDAPControl *lower, *upper;
2650 assert( ctrls[ 0 ] != NULL );
2652 for ( n = 0; ctrls[ n ] != NULL; n++ )
2655 if ( op->o_ctrls ) {
2656 for ( i = 0; op->o_ctrls[ i ] != NULL; i++ )
2661 lower = (LDAPControl *)&ctrls[ n ];
2662 upper = &lower[ n_added ];
2664 for ( i = 0; ctrls[ i ] != NULL; i++ ) {
2665 if ( ctrls[ i ] < lower || ctrls[ i ] >= upper ) {
2666 /* original; don't touch */
2670 if ( !BER_BVISNULL( &ctrls[ i ]->ldctl_value ) ) {
2671 op->o_tmpfree( ctrls[ i ]->ldctl_value.bv_val, op->o_tmpmemctx );
2675 op->o_tmpfree( ctrls, op->o_tmpmemctx );