1 /* bind.c - ldap backend bind function */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 1999-2009 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 rs->sr_tag = slap_req2res( op->o_tag );
1233 return SLAP_CB_CONTINUE;
1237 * ldap_back_dobind_int
1239 * Note: dolock indicates whether li->li_conninfo.lai_mutex must be locked or not
1242 ldap_back_dobind_int(
1246 ldap_back_send_t sendok,
1250 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1253 struct berval binddn = slap_empty_bv,
1254 bindcred = slap_empty_bv;
1260 ber_tag_t o_tag = op->o_tag;
1261 slap_callback cb = {0};
1263 assert( lcp != NULL );
1264 assert( retries >= 0 );
1266 if ( sendok & LDAP_BACK_GETCONN ) {
1267 assert( *lcp == NULL );
1269 lc = ldap_back_getconn( op, rs, sendok, &binddn, &bindcred );
1279 assert( lc != NULL );
1283 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1286 if ( binding == 0 ) {
1287 /* check if already bound */
1288 rc = isbound = LDAP_BACK_CONN_ISBOUND( lc );
1291 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1296 if ( LDAP_BACK_CONN_BINDING( lc ) ) {
1297 /* if someone else is about to bind it, give up and retry */
1299 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1301 ldap_pvt_thread_yield();
1305 /* otherwise this thread will bind it */
1306 LDAP_BACK_CONN_BINDING_SET( lc );
1312 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1316 * FIXME: we need to let clients use proxyAuthz
1317 * otherwise we cannot do symmetric pools of servers;
1318 * we have to live with the fact that a user can
1319 * authorize itself as any ID that is allowed
1320 * by the authzTo directive of the "proxyauthzdn".
1323 * NOTE: current Proxy Authorization specification
1324 * and implementation do not allow proxy authorization
1325 * control to be provided with Bind requests
1328 * if no bind took place yet, but the connection is bound
1329 * and the "idassert-authcDN" (or other ID) is set,
1330 * then bind as the asserting identity and explicitly
1331 * add the proxyAuthz control to every operation with the
1332 * dn bound to the connection as control value.
1333 * This is done also if this is the authorizing backend,
1334 * but the "override" flag is given to idassert.
1335 * It allows to use SASL bind and yet proxyAuthz users
1337 op->o_tag = LDAP_REQ_BIND;
1338 cb.sc_next = op->o_callback;
1339 cb.sc_private = &o_tag;
1340 cb.sc_response = ldap_back_dobind_cb;
1341 op->o_callback = &cb;
1343 if ( LDAP_BACK_CONN_ISIDASSERT( lc ) ) {
1344 if ( BER_BVISEMPTY( &binddn ) && BER_BVISEMPTY( &bindcred ) ) {
1345 /* if we got here, it shouldn't return result */
1346 rc = ldap_back_is_proxy_authz( op, rs,
1347 LDAP_BACK_DONTSEND, &binddn, &bindcred );
1350 rc = ldap_back_proxy_authz_bind( lc, op, rs, sendok, &binddn, &bindcred );
1354 #ifdef HAVE_CYRUS_SASL
1355 if ( LDAP_BACK_CONN_ISPRIV( lc )
1356 && li->li_acl_authmethod == LDAP_AUTH_SASL )
1358 void *defaults = NULL;
1360 if ( li->li_acl_secprops != NULL ) {
1361 rc = ldap_set_option( lc->lc_ld,
1362 LDAP_OPT_X_SASL_SECPROPS, li->li_acl_secprops );
1364 if ( rc != LDAP_OPT_SUCCESS ) {
1365 Debug( LDAP_DEBUG_ANY, "Error: ldap_set_option "
1366 "(SECPROPS,\"%s\") failed!\n",
1367 li->li_acl_secprops, 0, 0 );
1372 defaults = lutil_sasl_defaults( lc->lc_ld,
1373 li->li_acl_sasl_mech.bv_val,
1374 li->li_acl_sasl_realm.bv_val,
1375 li->li_acl_authcID.bv_val,
1376 li->li_acl_passwd.bv_val,
1378 if ( defaults == NULL ) {
1379 rs->sr_err = LDAP_OTHER;
1380 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1381 if ( sendok & LDAP_BACK_SENDERR ) {
1382 send_ldap_result( op, rs );
1387 rs->sr_err = ldap_sasl_interactive_bind_s( lc->lc_ld,
1388 li->li_acl_authcDN.bv_val,
1389 li->li_acl_sasl_mech.bv_val, NULL, NULL,
1390 LDAP_SASL_QUIET, lutil_sasl_interact,
1393 lutil_sasl_freedefs( defaults );
1395 switch ( rs->sr_err ) {
1397 LDAP_BACK_CONN_ISBOUND_SET( lc );
1400 case LDAP_LOCAL_ERROR:
1401 /* list client API error codes that require
1402 * to taint the connection */
1403 /* FIXME: should actually retry? */
1404 LDAP_BACK_CONN_TAINTED_SET( lc );
1409 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
1410 rs->sr_err = slap_map_api2result( rs );
1411 if ( sendok & LDAP_BACK_SENDERR ) {
1412 send_ldap_result( op, rs );
1417 if ( LDAP_BACK_QUARANTINE( li ) ) {
1418 ldap_back_quarantine( op, rs );
1423 #endif /* HAVE_CYRUS_SASL */
1426 rs->sr_err = ldap_sasl_bind( lc->lc_ld,
1427 BER_BVISNULL( &lc->lc_cred ) ? "" : lc->lc_bound_ndn.bv_val,
1428 LDAP_SASL_SIMPLE, &lc->lc_cred,
1429 NULL, NULL, &msgid );
1431 if ( rs->sr_err == LDAP_SERVER_DOWN ) {
1432 if ( retries != LDAP_BACK_RETRY_NEVER ) {
1434 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1437 assert( lc->lc_refcnt > 0 );
1438 if ( lc->lc_refcnt == 1 ) {
1439 ldap_unbind_ext( lc->lc_ld, NULL, NULL );
1442 /* lc here must be the regular lc, reset and ready for init */
1443 rs->sr_err = ldap_back_prepare_conn( lc, op, rs, sendok );
1444 if ( rs->sr_err != LDAP_SUCCESS ) {
1445 sendok &= ~LDAP_BACK_SENDERR;
1451 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1454 if ( rs->sr_err == LDAP_SUCCESS ) {
1455 if ( retries > 0 ) {
1462 assert( lc->lc_refcnt == 1 );
1464 ldap_back_freeconn( li, lc, dolock );
1466 rs->sr_err = slap_map_api2result( rs );
1468 if ( LDAP_BACK_QUARANTINE( li ) ) {
1469 ldap_back_quarantine( op, rs );
1472 if ( rs->sr_err != LDAP_SUCCESS &&
1473 ( sendok & LDAP_BACK_SENDERR ) )
1475 if ( op->o_callback == &cb )
1476 op->o_callback = cb.sc_next;
1478 rs->sr_text = "Proxy can't contact remote server";
1479 send_ldap_result( op, rs );
1486 rc = ldap_back_op_result( lc, op, rs, msgid,
1487 -1, ( sendok | LDAP_BACK_BINDING ) );
1488 if ( rc == LDAP_SUCCESS ) {
1489 LDAP_BACK_CONN_ISBOUND_SET( lc );
1493 LDAP_BACK_CONN_BINDING_CLEAR( lc );
1494 rc = LDAP_BACK_CONN_ISBOUND( lc );
1496 ldap_back_release_conn_lock( li, lcp, dolock );
1498 } else if ( LDAP_BACK_SAVECRED( li ) ) {
1499 ldap_set_rebind_proc( lc->lc_ld, li->li_rebind_f, lc );
1503 if ( op->o_callback == &cb )
1504 op->o_callback = cb.sc_next;
1513 * Note: dolock indicates whether li->li_conninfo.lai_mutex must be locked or not
1516 ldap_back_dobind( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
1518 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1520 return ldap_back_dobind_int( lcp, op, rs,
1521 ( sendok | LDAP_BACK_GETCONN ), li->li_nretries, 1 );
1525 * ldap_back_default_rebind
1527 * This is a callback used for chasing referrals using the same
1528 * credentials as the original user on this session.
1531 ldap_back_default_rebind( LDAP *ld, LDAP_CONST char *url, ber_tag_t request,
1532 ber_int_t msgid, void *params )
1534 ldapconn_t *lc = (ldapconn_t *)params;
1537 /* ... otherwise we couldn't get here */
1538 assert( lc != NULL );
1540 if ( !ldap_tls_inplace( ld ) ) {
1541 int is_tls = LDAP_BACK_CONN_ISTLS( lc ),
1543 const char *text = NULL;
1545 rc = ldap_back_start_tls( ld, 0, &is_tls, url, lc->lc_flags,
1546 LDAP_BACK_RETRY_DEFAULT, &text );
1547 if ( rc != LDAP_SUCCESS ) {
1551 #endif /* HAVE_TLS */
1553 /* FIXME: add checks on the URL/identity? */
1555 return ldap_sasl_bind_s( ld,
1556 BER_BVISNULL( &lc->lc_cred ) ? "" : lc->lc_bound_ndn.bv_val,
1557 LDAP_SASL_SIMPLE, &lc->lc_cred, NULL, NULL, NULL );
1561 * ldap_back_default_urllist
1564 ldap_back_default_urllist(
1566 LDAPURLDesc **urllist,
1570 ldapinfo_t *li = (ldapinfo_t *)params;
1571 LDAPURLDesc **urltail;
1573 if ( urllist == url ) {
1574 return LDAP_SUCCESS;
1577 for ( urltail = &(*url)->lud_next; *urltail; urltail = &(*urltail)->lud_next )
1580 *urltail = *urllist;
1584 ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
1586 ch_free( li->li_uri );
1589 ldap_get_option( ld, LDAP_OPT_URI, (void *)&li->li_uri );
1590 ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
1592 return LDAP_SUCCESS;
1601 ldap_back_send_t sendok )
1603 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1605 /* default behavior */
1606 if ( LDAP_BACK_ABANDON( li ) ) {
1607 return ldap_abandon_ext( lc->lc_ld, msgid, NULL, NULL );
1610 if ( LDAP_BACK_IGNORE( li ) ) {
1611 return ldap_pvt_discard( lc->lc_ld, msgid );
1614 if ( LDAP_BACK_CANCEL( li ) ) {
1615 /* FIXME: asynchronous? */
1616 return ldap_cancel_s( lc->lc_ld, msgid, NULL, NULL );
1625 ldap_back_op_result(
1631 ldap_back_send_t sendok )
1633 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1638 LDAPControl **ctrls = NULL;
1641 rs->sr_matched = NULL;
1643 rs->sr_ctrls = NULL;
1645 /* if the error recorded in the reply corresponds
1646 * to a successful state, get the error from the
1647 * remote server response */
1648 if ( LDAP_ERR_OK( rs->sr_err ) ) {
1651 LDAPMessage *res = NULL;
1652 time_t stoptime = (time_t)(-1);
1653 int timeout_err = op->o_protocol >= LDAP_VERSION3 ?
1654 LDAP_ADMINLIMIT_EXCEEDED : LDAP_OTHER;
1655 const char *timeout_text = "Operation timed out";
1657 /* if timeout is not specified, compute and use
1658 * the one specific to the ongoing operation */
1659 if ( timeout == (time_t)(-1) ) {
1660 slap_op_t opidx = slap_req2op( op->o_tag );
1662 if ( opidx == SLAP_OP_SEARCH ) {
1663 if ( op->ors_tlimit <= 0 ) {
1667 timeout = op->ors_tlimit;
1668 timeout_err = LDAP_TIMELIMIT_EXCEEDED;
1669 timeout_text = NULL;
1673 timeout = li->li_timeout[ opidx ];
1677 /* better than nothing :) */
1678 if ( timeout == 0 ) {
1679 if ( li->li_idle_timeout ) {
1680 timeout = li->li_idle_timeout;
1682 } else if ( li->li_conn_ttl ) {
1683 timeout = li->li_conn_ttl;
1688 stoptime = op->o_time + timeout;
1691 LDAP_BACK_TV_SET( &tv );
1694 /* if result parsing fails, note the failure reason */
1695 rc = ldap_result( lc->lc_ld, msgid, LDAP_MSG_ALL, &tv, &res );
1698 if ( timeout && slap_get_time() > stoptime ) {
1699 if ( sendok & LDAP_BACK_BINDING ) {
1700 ldap_unbind_ext( lc->lc_ld, NULL, NULL );
1703 /* let it be used, but taint/delete it so that
1704 * no-one else can look it up any further */
1705 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1707 #if LDAP_BACK_PRINT_CONNTREE > 0
1708 ldap_back_print_conntree( li, ">>> ldap_back_getconn(timeout)" );
1709 #endif /* LDAP_BACK_PRINT_CONNTREE */
1711 (void)ldap_back_conn_delete( li, lc );
1712 LDAP_BACK_CONN_TAINTED_SET( lc );
1714 #if LDAP_BACK_PRINT_CONNTREE > 0
1715 ldap_back_print_conntree( li, "<<< ldap_back_getconn(timeout)" );
1716 #endif /* LDAP_BACK_PRINT_CONNTREE */
1717 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1720 (void)ldap_back_cancel( lc, op, rs, msgid, sendok );
1722 rs->sr_err = timeout_err;
1723 rs->sr_text = timeout_text;
1728 LDAP_BACK_TV_SET( &tv );
1729 ldap_pvt_thread_yield();
1733 ldap_get_option( lc->lc_ld, LDAP_OPT_ERROR_NUMBER,
1738 /* otherwise get the result; if it is not
1739 * LDAP_SUCCESS, record it in the reply
1740 * structure (this includes
1741 * LDAP_COMPARE_{TRUE|FALSE}) */
1743 /* only touch when activity actually took place... */
1744 if ( li->li_idle_timeout && lc ) {
1745 lc->lc_time = op->o_time;
1748 rc = ldap_parse_result( lc->lc_ld, res, &rs->sr_err,
1749 &match, &text, &refs, &ctrls, 1 );
1751 if ( rc != LDAP_SUCCESS ) {
1755 /* RFC 4511: referrals can only appear
1756 * if result code is LDAP_REFERRAL */
1758 && refs[ 0 ] != NULL
1759 && refs[ 0 ][ 0 ] != '\0' )
1761 if ( rs->sr_err != LDAP_REFERRAL ) {
1762 Debug( LDAP_DEBUG_ANY,
1763 "%s ldap_back_op_result: "
1764 "got referrals with err=%d\n",
1771 for ( i = 0; refs[ i ] != NULL; i++ )
1773 rs->sr_ref = op->o_tmpalloc( sizeof( struct berval ) * ( i + 1 ),
1775 for ( i = 0; refs[ i ] != NULL; i++ ) {
1776 ber_str2bv( refs[ i ], 0, 0, &rs->sr_ref[ i ] );
1778 BER_BVZERO( &rs->sr_ref[ i ] );
1781 } else if ( rs->sr_err == LDAP_REFERRAL ) {
1782 Debug( LDAP_DEBUG_ANY,
1783 "%s ldap_back_op_result: "
1784 "got err=%d with null "
1785 "or empty referrals\n",
1789 rs->sr_err = LDAP_NO_SUCH_OBJECT;
1792 if ( ctrls != NULL ) {
1793 rs->sr_ctrls = ctrls;
1798 /* if the error in the reply structure is not
1799 * LDAP_SUCCESS, try to map it from client
1800 * to server error */
1801 if ( !LDAP_ERR_OK( rs->sr_err ) ) {
1802 rs->sr_err = slap_map_api2result( rs );
1804 /* internal ops ( op->o_conn == NULL )
1805 * must not reply to client */
1806 if ( op->o_conn && !op->o_do_not_cache && match ) {
1808 /* record the (massaged) matched
1809 * DN into the reply structure */
1810 rs->sr_matched = match;
1814 if ( rs->sr_err == LDAP_UNAVAILABLE ) {
1815 if ( !( sendok & LDAP_BACK_RETRYING ) ) {
1816 if ( LDAP_BACK_QUARANTINE( li ) ) {
1817 ldap_back_quarantine( op, rs );
1819 if ( op->o_conn && ( sendok & LDAP_BACK_SENDERR ) ) {
1820 if ( rs->sr_text == NULL ) rs->sr_text = "Proxy operation retry failed";
1821 send_ldap_result( op, rs );
1825 } else if ( op->o_conn &&
1826 ( ( ( sendok & LDAP_BACK_SENDOK ) && LDAP_ERR_OK( rs->sr_err ) )
1827 || ( ( sendok & LDAP_BACK_SENDERR ) && !LDAP_ERR_OK( rs->sr_err ) ) ) )
1829 send_ldap_result( op, rs );
1833 if ( rs->sr_matched != match ) {
1834 free( (char *)rs->sr_matched );
1836 rs->sr_matched = NULL;
1837 ldap_memfree( match );
1841 ldap_memfree( text );
1846 op->o_tmpfree( rs->sr_ref, op->o_tmpmemctx );
1851 ber_memvfree( (void **)refs );
1855 assert( rs->sr_ctrls != NULL );
1856 ldap_controls_free( ctrls );
1857 rs->sr_ctrls = NULL;
1860 return( LDAP_ERR_OK( rs->sr_err ) ? LDAP_SUCCESS : rs->sr_err );
1863 /* return true if bound, false if failed */
1865 ldap_back_retry( ldapconn_t **lcp, Operation *op, SlapReply *rs, ldap_back_send_t sendok )
1867 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1870 assert( lcp != NULL );
1871 assert( *lcp != NULL );
1873 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
1875 if ( (*lcp)->lc_refcnt == 1 ) {
1876 int binding = LDAP_BACK_CONN_BINDING( *lcp );
1878 ldap_pvt_thread_mutex_lock( &li->li_uri_mutex );
1879 Debug( LDAP_DEBUG_ANY,
1880 "%s ldap_back_retry: retrying URI=\"%s\" DN=\"%s\"\n",
1881 op->o_log_prefix, li->li_uri,
1882 BER_BVISNULL( &(*lcp)->lc_bound_ndn ) ?
1883 "" : (*lcp)->lc_bound_ndn.bv_val );
1884 ldap_pvt_thread_mutex_unlock( &li->li_uri_mutex );
1886 ldap_unbind_ext( (*lcp)->lc_ld, NULL, NULL );
1887 (*lcp)->lc_ld = NULL;
1888 LDAP_BACK_CONN_ISBOUND_CLEAR( (*lcp) );
1890 /* lc here must be the regular lc, reset and ready for init */
1891 rc = ldap_back_prepare_conn( *lcp, op, rs, sendok );
1892 if ( rc != LDAP_SUCCESS ) {
1893 /* freeit, because lc_refcnt == 1 */
1894 (*lcp)->lc_refcnt = 0;
1895 (void)ldap_back_freeconn( li, *lcp, 0 );
1899 } else if ( ( sendok & LDAP_BACK_BINDING ) ) {
1901 LDAP_BACK_CONN_BINDING_SET( *lcp );
1906 rc = ldap_back_dobind_int( lcp, op, rs, sendok, 0, 0 );
1907 if ( rc == 0 && *lcp != NULL ) {
1908 /* freeit, because lc_refcnt == 1 */
1909 (*lcp)->lc_refcnt = 0;
1910 LDAP_BACK_CONN_TAINTED_SET( *lcp );
1911 (void)ldap_back_freeconn( li, *lcp, 0 );
1917 Debug( LDAP_DEBUG_TRACE,
1918 "ldap_back_retry: conn %p refcnt=%u unable to retry.\n",
1919 (void *)(*lcp), (*lcp)->lc_refcnt, 0 );
1921 LDAP_BACK_CONN_TAINTED_SET( *lcp );
1922 ldap_back_release_conn_lock( li, lcp, 0 );
1923 assert( *lcp == NULL );
1925 if ( sendok & LDAP_BACK_SENDERR ) {
1926 rs->sr_err = LDAP_UNAVAILABLE;
1927 rs->sr_text = "Unable to retry";
1928 send_ldap_result( op, rs );
1932 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
1938 ldap_back_is_proxy_authz( Operation *op, SlapReply *rs, ldap_back_send_t sendok,
1939 struct berval *binddn, struct berval *bindcred )
1941 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
1945 if ( op->o_conn == NULL || op->o_do_not_cache ) {
1949 /* don't proxyAuthz if protocol is not LDAPv3 */
1950 switch ( li->li_version ) {
1955 if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
1961 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1962 if ( sendok & LDAP_BACK_SENDERR ) {
1963 send_ldap_result( op, rs );
1970 *binddn = slap_empty_bv;
1971 *bindcred = slap_empty_bv;
1973 if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
1974 ndn = op->o_conn->c_ndn;
1980 switch ( li->li_idassert_mode ) {
1981 case LDAP_BACK_IDASSERT_LEGACY:
1982 if ( !BER_BVISNULL( &ndn ) && !BER_BVISEMPTY( &ndn ) ) {
1983 if ( !BER_BVISNULL( &li->li_idassert_authcDN ) && !BER_BVISEMPTY( &li->li_idassert_authcDN ) )
1985 *binddn = li->li_idassert_authcDN;
1986 *bindcred = li->li_idassert_passwd;
1993 /* NOTE: rootdn can always idassert */
1994 if ( BER_BVISNULL( &ndn )
1995 && li->li_idassert_authz == NULL
1996 && !( li->li_idassert_flags & LDAP_BACK_AUTH_AUTHZ_ALL ) )
1998 if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
1999 rs->sr_err = LDAP_INAPPROPRIATE_AUTH;
2000 if ( sendok & LDAP_BACK_SENDERR ) {
2001 send_ldap_result( op, rs );
2006 rs->sr_err = LDAP_SUCCESS;
2007 *binddn = slap_empty_bv;
2008 *bindcred = slap_empty_bv;
2014 } else if ( li->li_idassert_authz && !be_isroot( op ) ) {
2015 struct berval authcDN;
2017 if ( BER_BVISNULL( &ndn ) ) {
2018 authcDN = slap_empty_bv;
2023 rs->sr_err = slap_sasl_matches( op, li->li_idassert_authz,
2024 &authcDN, &authcDN );
2025 if ( rs->sr_err != LDAP_SUCCESS ) {
2026 if ( li->li_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
2027 if ( sendok & LDAP_BACK_SENDERR ) {
2028 send_ldap_result( op, rs );
2033 rs->sr_err = LDAP_SUCCESS;
2034 *binddn = slap_empty_bv;
2035 *bindcred = slap_empty_bv;
2043 *binddn = li->li_idassert_authcDN;
2044 *bindcred = li->li_idassert_passwd;
2054 ldap_back_proxy_authz_bind(
2058 ldap_back_send_t sendok,
2059 struct berval *binddn,
2060 struct berval *bindcred )
2062 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
2067 if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
2068 ndn = op->o_conn->c_ndn;
2074 if ( li->li_idassert_authmethod == LDAP_AUTH_SASL ) {
2075 #ifdef HAVE_CYRUS_SASL
2076 void *defaults = NULL;
2077 struct berval authzID = BER_BVNULL;
2080 /* if SASL supports native authz, prepare for it */
2081 if ( ( !op->o_do_not_cache || !op->o_is_auth_check ) &&
2082 ( li->li_idassert_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) )
2084 switch ( li->li_idassert_mode ) {
2085 case LDAP_BACK_IDASSERT_OTHERID:
2086 case LDAP_BACK_IDASSERT_OTHERDN:
2087 authzID = li->li_idassert_authzID;
2090 case LDAP_BACK_IDASSERT_ANONYMOUS:
2091 BER_BVSTR( &authzID, "dn:" );
2094 case LDAP_BACK_IDASSERT_SELF:
2095 if ( BER_BVISNULL( &ndn ) ) {
2096 /* connection is not authc'd, so don't idassert */
2097 BER_BVSTR( &authzID, "dn:" );
2100 authzID.bv_len = STRLENOF( "dn:" ) + ndn.bv_len;
2101 authzID.bv_val = slap_sl_malloc( authzID.bv_len + 1, op->o_tmpmemctx );
2102 AC_MEMCPY( authzID.bv_val, "dn:", STRLENOF( "dn:" ) );
2103 AC_MEMCPY( authzID.bv_val + STRLENOF( "dn:" ),
2104 ndn.bv_val, ndn.bv_len + 1 );
2113 if ( li->li_idassert_secprops != NULL ) {
2114 rs->sr_err = ldap_set_option( lc->lc_ld,
2115 LDAP_OPT_X_SASL_SECPROPS,
2116 (void *)li->li_idassert_secprops );
2118 if ( rs->sr_err != LDAP_OPT_SUCCESS ) {
2119 rs->sr_err = LDAP_OTHER;
2120 if ( sendok & LDAP_BACK_SENDERR ) {
2121 send_ldap_result( op, rs );
2123 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
2128 defaults = lutil_sasl_defaults( lc->lc_ld,
2129 li->li_idassert_sasl_mech.bv_val,
2130 li->li_idassert_sasl_realm.bv_val,
2131 li->li_idassert_authcID.bv_val,
2132 li->li_idassert_passwd.bv_val,
2134 if ( defaults == NULL ) {
2135 rs->sr_err = LDAP_OTHER;
2136 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
2137 if ( sendok & LDAP_BACK_SENDERR ) {
2138 send_ldap_result( op, rs );
2143 rs->sr_err = ldap_sasl_interactive_bind_s( lc->lc_ld, binddn->bv_val,
2144 li->li_idassert_sasl_mech.bv_val, NULL, NULL,
2145 LDAP_SASL_QUIET, lutil_sasl_interact,
2148 switch ( rs->sr_err ) {
2150 LDAP_BACK_CONN_ISBOUND_SET( lc );
2153 case LDAP_LOCAL_ERROR:
2154 /* list client API error codes that require
2155 * to taint the connection */
2156 /* FIXME: should actually retry? */
2157 LDAP_BACK_CONN_TAINTED_SET( lc );
2162 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
2163 rs->sr_err = slap_map_api2result( rs );
2164 if ( sendok & LDAP_BACK_SENDERR ) {
2165 send_ldap_result( op, rs );
2170 lutil_sasl_freedefs( defaults );
2172 slap_sl_free( authzID.bv_val, op->o_tmpmemctx );
2176 #endif /* HAVE_CYRUS_SASL */
2179 switch ( li->li_idassert_authmethod ) {
2180 case LDAP_AUTH_NONE:
2181 /* FIXME: do we really need this? */
2182 BER_BVSTR( binddn, "" );
2183 BER_BVSTR( bindcred, "" );
2186 case LDAP_AUTH_SIMPLE:
2187 rs->sr_err = ldap_sasl_bind( lc->lc_ld,
2188 binddn->bv_val, LDAP_SASL_SIMPLE,
2189 bindcred, NULL, NULL, &msgid );
2190 rc = ldap_back_op_result( lc, op, rs, msgid,
2191 -1, ( sendok | LDAP_BACK_BINDING ) );
2196 LDAP_BACK_CONN_ISBOUND_CLEAR( lc );
2197 rs->sr_err = LDAP_AUTH_METHOD_NOT_SUPPORTED;
2198 if ( sendok & LDAP_BACK_SENDERR ) {
2199 send_ldap_result( op, rs );
2204 if ( rc == LDAP_SUCCESS ) {
2205 /* set rebind stuff in case of successful proxyAuthz bind,
2206 * so that referral chasing is attempted using the right
2208 LDAP_BACK_CONN_ISBOUND_SET( lc );
2209 if ( !BER_BVISNULL( binddn ) ) {
2210 ber_bvreplace( &lc->lc_bound_ndn, binddn );
2213 if ( !BER_BVISNULL( &lc->lc_cred ) ) {
2214 memset( lc->lc_cred.bv_val, 0,
2215 lc->lc_cred.bv_len );
2218 if ( LDAP_BACK_SAVECRED( li ) ) {
2219 if ( !BER_BVISNULL( bindcred ) ) {
2220 ber_bvreplace( &lc->lc_cred, bindcred );
2221 ldap_set_rebind_proc( lc->lc_ld, li->li_rebind_f, lc );
2225 lc->lc_cred.bv_len = 0;
2229 return LDAP_BACK_CONN_ISBOUND( lc );
2233 * ldap_back_proxy_authz_ctrl() prepends a proxyAuthz control
2234 * to existing server-side controls if required; if not,
2235 * the existing server-side controls are placed in *pctrls.
2236 * The caller, after using the controls in client API
2237 * operations, if ( *pctrls != op->o_ctrls ), should
2238 * free( (*pctrls)[ 0 ] ) and free( *pctrls ).
2239 * The function returns success if the control could
2240 * be added if required, or if it did nothing; in the future,
2241 * it might return some error if it failed.
2243 * if no bind took place yet, but the connection is bound
2244 * and the "proxyauthzdn" is set, then bind as "proxyauthzdn"
2245 * and explicitly add proxyAuthz the control to every operation
2246 * with the dn bound to the connection as control value.
2248 * If no server-side controls are defined for the operation,
2249 * simply add the proxyAuthz control; otherwise, if the
2250 * proxyAuthz control is not already set, add it as
2253 * FIXME: is controls order significant for security?
2254 * ANSWER: controls ordering and interoperability
2255 * must be indicated by the specs of each control; if none
2256 * is specified, the order is irrelevant.
2259 ldap_back_proxy_authz_ctrl(
2262 struct berval *bound_ndn,
2264 slap_idassert_t *si,
2267 slap_idassert_mode_t mode;
2268 struct berval assertedID,
2272 rs->sr_err = SLAP_CB_CONTINUE;
2274 /* FIXME: SASL/EXTERNAL over ldapi:// doesn't honor the authcID,
2275 * but if it is not set this test fails. We need a different
2276 * means to detect if idassert is enabled */
2277 if ( ( BER_BVISNULL( &si->si_bc.sb_authcId ) || BER_BVISEMPTY( &si->si_bc.sb_authcId ) )
2278 && ( BER_BVISNULL( &si->si_bc.sb_binddn ) || BER_BVISEMPTY( &si->si_bc.sb_binddn ) )
2279 && BER_BVISNULL( &si->si_bc.sb_saslmech ) )
2284 if ( !op->o_conn || op->o_do_not_cache || ( isroot = be_isroot( op ) ) ) {
2288 if ( op->o_tag == LDAP_REQ_BIND ) {
2289 ndn = op->o_req_ndn;
2291 } else if ( !BER_BVISNULL( &op->o_conn->c_ndn ) ) {
2292 ndn = op->o_conn->c_ndn;
2298 if ( si->si_mode == LDAP_BACK_IDASSERT_LEGACY ) {
2299 if ( op->o_proxy_authz ) {
2301 * FIXME: we do not want to perform proxyAuthz
2302 * on behalf of the client, because this would
2303 * be performed with "proxyauthzdn" privileges.
2305 * This might actually be too strict, since
2306 * the "proxyauthzdn" authzTo, and each entry's
2307 * authzFrom attributes may be crafted
2308 * to avoid unwanted proxyAuthz to take place.
2311 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
2312 rs->sr_text = "proxyAuthz not allowed within namingContext";
2317 if ( !BER_BVISNULL( bound_ndn ) ) {
2321 if ( BER_BVISNULL( &ndn ) ) {
2325 if ( BER_BVISNULL( &si->si_bc.sb_binddn ) ) {
2329 } else if ( si->si_bc.sb_method == LDAP_AUTH_SASL ) {
2330 if ( ( si->si_flags & LDAP_BACK_AUTH_NATIVE_AUTHZ ) )
2332 /* already asserted in SASL via native authz */
2336 } else if ( si->si_authz && !isroot ) {
2338 struct berval authcDN;
2340 if ( BER_BVISNULL( &ndn ) ) {
2341 authcDN = slap_empty_bv;
2345 rc = slap_sasl_matches( op, si->si_authz,
2346 &authcDN, &authcDN );
2347 if ( rc != LDAP_SUCCESS ) {
2348 if ( si->si_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) {
2349 /* ndn is not authorized
2350 * to use idassert */
2357 if ( op->o_proxy_authz ) {
2360 * 1) ignore the already set proxyAuthz control
2361 * 2) leave it in place, and don't set ours
2363 * 4) reject the operation
2365 * option (4) is very drastic
2366 * option (3) will make the remote server reject
2367 * the operation, thus being equivalent to (4)
2368 * option (2) will likely break the idassert
2369 * assumptions, so we cannot accept it;
2370 * option (1) means that we are contradicting
2371 * the client's reques.
2373 * I think (4) is the only correct choice.
2375 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
2376 rs->sr_text = "proxyAuthz not allowed within namingContext";
2379 if ( op->o_is_auth_check ) {
2380 mode = LDAP_BACK_IDASSERT_NOASSERT;
2387 case LDAP_BACK_IDASSERT_LEGACY:
2388 /* original behavior:
2389 * assert the client's identity */
2390 case LDAP_BACK_IDASSERT_SELF:
2394 case LDAP_BACK_IDASSERT_ANONYMOUS:
2395 /* assert "anonymous" */
2396 assertedID = slap_empty_bv;
2399 case LDAP_BACK_IDASSERT_NOASSERT:
2400 /* don't assert; bind as proxyauthzdn */
2403 case LDAP_BACK_IDASSERT_OTHERID:
2404 case LDAP_BACK_IDASSERT_OTHERDN:
2405 /* assert idassert DN */
2406 assertedID = si->si_bc.sb_authzId;
2413 /* if we got here, "" is allowed to proxyAuthz */
2414 if ( BER_BVISNULL( &assertedID ) ) {
2415 assertedID = slap_empty_bv;
2418 /* don't idassert the bound DN (ITS#4497) */
2419 if ( dn_match( &assertedID, bound_ndn ) ) {
2423 ctrl->ldctl_oid = LDAP_CONTROL_PROXY_AUTHZ;
2425 switch ( si->si_mode ) {
2426 /* already in u:ID or dn:DN form */
2427 case LDAP_BACK_IDASSERT_OTHERID:
2428 case LDAP_BACK_IDASSERT_OTHERDN:
2429 ber_dupbv_x( &ctrl->ldctl_value, &assertedID, op->o_tmpmemctx );
2430 rs->sr_err = LDAP_SUCCESS;
2433 /* needs the dn: prefix */
2435 ctrl->ldctl_value.bv_len = assertedID.bv_len + STRLENOF( "dn:" );
2436 ctrl->ldctl_value.bv_val = op->o_tmpalloc( ctrl->ldctl_value.bv_len + 1,
2438 AC_MEMCPY( ctrl->ldctl_value.bv_val, "dn:", STRLENOF( "dn:" ) );
2439 AC_MEMCPY( &ctrl->ldctl_value.bv_val[ STRLENOF( "dn:" ) ],
2440 assertedID.bv_val, assertedID.bv_len + 1 );
2441 rs->sr_err = LDAP_SUCCESS;
2445 /* Older versions of <draft-weltman-ldapv3-proxy> required
2446 * to encode the value of the authzID (and called it proxyDN);
2447 * this hack provides compatibility with those DSAs that
2448 * implement it this way */
2449 if ( si->si_flags & LDAP_BACK_AUTH_OBSOLETE_ENCODING_WORKAROUND ) {
2450 struct berval authzID = ctrl->ldctl_value;
2451 BerElementBuffer berbuf;
2452 BerElement *ber = (BerElement *)&berbuf;
2455 ber_init2( ber, 0, LBER_USE_DER );
2456 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
2458 tag = ber_printf( ber, "O", &authzID );
2459 if ( tag == LBER_ERROR ) {
2460 rs->sr_err = LDAP_OTHER;
2464 if ( ber_flatten2( ber, &ctrl->ldctl_value, 1 ) == -1 ) {
2465 rs->sr_err = LDAP_OTHER;
2469 rs->sr_err = LDAP_SUCCESS;
2472 op->o_tmpfree( authzID.bv_val, op->o_tmpmemctx );
2473 ber_free_buf( ber );
2475 if ( rs->sr_err != LDAP_SUCCESS ) {
2479 } else if ( si->si_flags & LDAP_BACK_AUTH_OBSOLETE_PROXY_AUTHZ ) {
2480 struct berval authzID = ctrl->ldctl_value,
2482 BerElementBuffer berbuf;
2483 BerElement *ber = (BerElement *)&berbuf;
2486 if ( strncasecmp( authzID.bv_val, "dn:", STRLENOF( "dn:" ) ) != 0 ) {
2487 rs->sr_err = LDAP_PROTOCOL_ERROR;
2492 tmp.bv_val += STRLENOF( "dn:" );
2493 tmp.bv_len -= STRLENOF( "dn:" );
2495 ber_init2( ber, 0, LBER_USE_DER );
2496 ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );
2498 /* apparently, Mozilla API encodes this
2499 * as "SEQUENCE { LDAPDN }" */
2500 tag = ber_printf( ber, "{O}", &tmp );
2501 if ( tag == LBER_ERROR ) {
2502 rs->sr_err = LDAP_OTHER;
2506 if ( ber_flatten2( ber, &ctrl->ldctl_value, 1 ) == -1 ) {
2507 rs->sr_err = LDAP_OTHER;
2511 ctrl->ldctl_oid = LDAP_CONTROL_OBSOLETE_PROXY_AUTHZ;
2512 rs->sr_err = LDAP_SUCCESS;
2515 op->o_tmpfree( authzID.bv_val, op->o_tmpmemctx );
2516 ber_free_buf( ber );
2518 if ( rs->sr_err != LDAP_SUCCESS ) {
2531 * if any needs to be added, it is prepended to existing ones,
2532 * in a newly allocated array. The companion function
2533 * ldap_back_controls_free() must be used to restore the original
2534 * status of op->o_ctrls.
2537 ldap_back_controls_add(
2541 LDAPControl ***pctrls )
2543 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
2545 LDAPControl **ctrls = NULL;
2546 /* set to the maximum number of controls this backend can add */
2547 LDAPControl c[ 2 ] = { { 0 } };
2548 int n = 0, i, j1 = 0, j2 = 0;
2552 rs->sr_err = LDAP_SUCCESS;
2554 /* don't add controls if protocol is not LDAPv3 */
2555 switch ( li->li_version ) {
2560 if ( op->o_protocol == 0 || op->o_protocol == LDAP_VERSION3 ) {
2569 /* put controls that go __before__ existing ones here */
2571 /* proxyAuthz for identity assertion */
2572 switch ( ldap_back_proxy_authz_ctrl( op, rs, &lc->lc_bound_ndn,
2573 li->li_version, &li->li_idassert, &c[ j1 ] ) )
2575 case SLAP_CB_CONTINUE:
2586 /* put controls that go __after__ existing ones here */
2588 #ifdef SLAP_CONTROL_X_SESSION_TRACKING
2589 /* FIXME: according to <draft-wahl-ldap-session>,
2590 * the server should check if the control can be added
2591 * based on the identity of the client and so */
2593 /* session tracking */
2594 if ( LDAP_BACK_ST_REQUEST( li ) ) {
2595 switch ( slap_ctrl_session_tracking_request_add( op, rs, &c[ j1 + j2 ] ) ) {
2596 case SLAP_CB_CONTINUE:
2607 #endif /* SLAP_CONTROL_X_SESSION_TRACKING */
2609 if ( rs->sr_err == SLAP_CB_CONTINUE ) {
2610 rs->sr_err = LDAP_SUCCESS;
2613 /* if nothing to do, just bail out */
2614 if ( j1 == 0 && j2 == 0 ) {
2618 assert( j1 + j2 <= (int) (sizeof( c )/sizeof( c[0] )) );
2620 if ( op->o_ctrls ) {
2621 for ( n = 0; op->o_ctrls[ n ]; n++ )
2622 /* just count ctrls */ ;
2625 ctrls = op->o_tmpalloc( (n + j1 + j2 + 1) * sizeof( LDAPControl * ) + ( j1 + j2 ) * sizeof( LDAPControl ),
2628 ctrls[ 0 ] = (LDAPControl *)&ctrls[ n + j1 + j2 + 1 ];
2629 *ctrls[ 0 ] = c[ 0 ];
2630 for ( i = 1; i < j1; i++ ) {
2631 ctrls[ i ] = &ctrls[ 0 ][ i ];
2632 *ctrls[ i ] = c[ i ];
2637 if ( op->o_ctrls ) {
2638 for ( i = 0; op->o_ctrls[ i ]; i++ ) {
2639 ctrls[ i + j1 ] = op->o_ctrls[ i ];
2645 ctrls[ n ] = (LDAPControl *)&ctrls[ n + j2 + 1 ] + j1;
2646 *ctrls[ n ] = c[ j1 ];
2647 for ( i = 1; i < j2; i++ ) {
2648 ctrls[ n + i ] = &ctrls[ n ][ i ];
2649 *ctrls[ n + i ] = c[ i ];
2653 ctrls[ n + j2 ] = NULL;
2656 if ( ctrls == NULL ) {
2657 ctrls = op->o_ctrls;
2666 ldap_back_controls_free( Operation *op, SlapReply *rs, LDAPControl ***pctrls )
2668 LDAPControl **ctrls = *pctrls;
2670 /* we assume that the controls added by the proxy come first,
2671 * so as soon as we find op->o_ctrls[ 0 ] we can stop */
2672 if ( ctrls && ctrls != op->o_ctrls ) {
2673 int i = 0, n = 0, n_added;
2674 LDAPControl *lower, *upper;
2676 assert( ctrls[ 0 ] != NULL );
2678 for ( n = 0; ctrls[ n ] != NULL; n++ )
2681 if ( op->o_ctrls ) {
2682 for ( i = 0; op->o_ctrls[ i ] != NULL; i++ )
2687 lower = (LDAPControl *)&ctrls[ n ];
2688 upper = &lower[ n_added ];
2690 for ( i = 0; ctrls[ i ] != NULL; i++ ) {
2691 if ( ctrls[ i ] < lower || ctrls[ i ] >= upper ) {
2692 /* original; don't touch */
2696 if ( !BER_BVISNULL( &ctrls[ i ]->ldctl_value ) ) {
2697 op->o_tmpfree( ctrls[ i ]->ldctl_value.bv_val, op->o_tmpmemctx );
2701 op->o_tmpfree( ctrls, op->o_tmpmemctx );