1 /* distproc.c - implement distributed procedures */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
5 * Copyright 2005-2006 The OpenLDAP Foundation.
6 * Portions Copyright 2003 Howard Chu.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted only as authorized by the OpenLDAP
13 * A copy of this license is available in the file LICENSE in the
14 * top-level directory of the distribution or, alternatively, at
15 * <http://www.OpenLDAP.org/license.html>.
18 * This work was initially developed by Pierangelo Masarati for inclusion
19 * in OpenLDAP Software.
20 * Based on back-ldap and slapo-chain, developed by Howard Chu
27 #include <ac/string.h>
28 #include <ac/socket.h>
34 #include "back-ldap.h"
39 * From <draft-sermersheim-ldap-distproc>
42 ContinuationReference ::= SET {
43 referralURI [0] SET SIZE (1..MAX) OF URI,
44 localReference [2] LDAPDN,
45 referenceType [3] ReferenceType,
46 remainingName [4] RelativeLDAPDN OPTIONAL,
47 searchScope [5] SearchScope OPTIONAL,
48 searchedSubtrees [6] SearchedSubtrees OPTIONAL,
49 failedName [7] LDAPDN OPTIONAL,
52 ReferenceType ::= ENUMERATED {
56 nonSpecificSubordinate (3),
59 immediateSuperior (6),
63 SearchScope ::= ENUMERATED {
67 subordinateSubtree (3),
70 SearchedSubtrees ::= SET OF RelativeLDAPDN
72 LDAPDN, RelativeLDAPDN, and LDAPString, are defined in [RFC2251].
76 typedef enum ReferenceType_t {
77 LDAP_DP_RT_UNKNOWN = -1,
78 LDAP_DP_RT_SUPERIOR = 0,
79 LDAP_DP_RT_SUBORDINATE = 1,
81 LDAP_DP_RT_NONSPECIFICSUBORDINATE = 3,
82 LDAP_DP_RT_SUPPLIER = 4,
83 LDAP_DP_RT_MASTER = 5,
84 LDAP_DP_RT_IMMEDIATESUPERIOR = 6,
89 typedef enum SearchScope_t {
90 LDAP_DP_SS_UNKNOWN = -1,
91 LDAP_DP_SS_BASEOBJECT = 0,
92 LDAP_DP_SS_SINGLELEVEL = 1,
93 LDAP_DP_SS_WHOLESUBTREE = 2,
94 LDAP_DP_SS_SUBORDINATESUBTREE = 3,
98 typedef struct ContinuationReference_t {
99 BerVarray cr_referralURI;
101 struct berval cr_localReference;
102 ReferenceType_t cr_referenceType;
103 struct berval cr_remainingName;
104 SearchScope_t cr_searchScope;
105 BerVarray cr_searchedSubtrees;
106 struct berval cr_failedName;
107 } ContinuationReference_t;
108 #define CR_INIT { NULL, BER_BVNULL, LDAP_DP_RT_UNKNOWN, BER_BVNULL, LDAP_DP_SS_UNKNOWN, NULL, BER_BVNULL }
110 static struct berval bv2rt[] = {
111 BER_BVC( "superior" ),
112 BER_BVC( "subordinate" ),
114 BER_BVC( "nonSpecificSubordinate" ),
115 BER_BVC( "supplier" ),
117 BER_BVC( "immediateSuperior" ),
122 static struct berval bv2ss[] = {
123 BER_BVC( "baseObject" ),
124 BER_BVC( "singleLevel" ),
125 BER_BVC( "wholeSubtree" ),
126 BER_BVC( "subordinateSubtree" ),
130 static struct berval *
131 ldap_distproc_rt2bv( ReferenceType_t rt )
137 ldap_distproc_rt2str( ReferenceType_t rt )
139 return bv2rt[ rt ].bv_val;
142 static ReferenceType_t
143 ldap_distproc_bv2rt( struct berval *bv )
147 for ( rt = 0; !BER_BVISNULL( &bv2rt[ rt ] ); rt++ ) {
148 if ( ber_bvstrcasecmp( bv, &bv2rt[ rt ] ) == 0 ) {
153 return LDAP_DP_RT_UNKNOWN;
156 static ReferenceType_t
157 ldap_distproc_str2rt( const char *s )
161 ber_str2bv( s, 0, 0, &bv );
162 return ldap_distproc_bv2rt( &bv );
165 static struct berval *
166 ldap_distproc_ss2bv( SearchScope_t ss )
172 ldap_distproc_ss2str( SearchScope_t ss )
174 return bv2ss[ ss ].bv_val;
178 ldap_distproc_bv2ss( struct berval *bv )
182 for ( ss = 0; !BER_BVISNULL( &bv2ss[ ss ] ); ss++ ) {
183 if ( ber_bvstrcasecmp( bv, &bv2ss[ ss ] ) == 0 ) {
188 return LDAP_DP_SS_UNKNOWN;
192 ldap_distproc_str2ss( const char *s )
196 ber_str2bv( s, 0, 0, &bv );
197 return ldap_distproc_bv2ss( &bv );
201 * NOTE: this overlay assumes that the chainingBehavior control
202 * is registered by the chain overlay; it may move here some time.
203 * This overlay provides support for that control as well.
207 static int sc_returnContRef;
208 #define o_returnContRef o_ctrlflag[sc_returnContRef]
209 #define get_returnContRef(op) ((op)->o_returnContRef & SLAP_CONTROL_MASK)
211 static struct berval slap_EXOP_CHAINEDREQUEST = BER_BVC( LDAP_EXOP_X_CHAINEDREQUEST );
212 static struct berval slap_FEATURE_CANCHAINOPS = BER_BVC( LDAP_FEATURE_X_CANCHAINOPS );
214 static BackendInfo *lback;
216 typedef struct ldap_distproc_t {
217 /* "common" configuration info (anything occurring before an "uri") */
218 ldapinfo_t *lc_common_li;
220 /* current configuration info */
221 ldapinfo_t *lc_cfg_li;
223 /* tree of configured[/generated?] "uri" info */
224 ldap_avl_info_t lc_lai;
227 #define LDAP_DISTPROC_F_NONE (0x00U)
228 #define LDAP_DISTPROC_F_CHAINING (0x01U)
229 #define LDAP_DISTPROC_F_CACHE_URI (0x10U)
231 #define LDAP_DISTPROC_CHAINING( lc ) ( ( (lc)->lc_flags & LDAP_DISTPROC_F_CHAINING ) == LDAP_DISTPROC_F_CHAINING )
232 #define LDAP_DISTPROC_CACHE_URI( lc ) ( ( (lc)->lc_flags & LDAP_DISTPROC_F_CACHE_URI ) == LDAP_DISTPROC_F_CACHE_URI )
236 static int ldap_distproc_db_init_common( BackendDB *be );
237 static int ldap_distproc_db_init_one( BackendDB *be );
238 #define ldap_distproc_db_open_one(be) (lback)->bi_db_open( (be) )
239 #define ldap_distproc_db_close_one(be) (0)
240 #define ldap_distproc_db_destroy_one(be) (lback)->bi_db_destroy( (be) )
243 ldap_distproc_parse_ctrl(
249 ldap_distproc_uri_cmp( const void *c1, const void *c2 )
251 const ldapinfo_t *li1 = (const ldapinfo_t *)c1;
252 const ldapinfo_t *li2 = (const ldapinfo_t *)c2;
254 assert( li1->li_bvuri != NULL );
255 assert( !BER_BVISNULL( &li1->li_bvuri[ 0 ] ) );
256 assert( BER_BVISNULL( &li1->li_bvuri[ 1 ] ) );
258 assert( li2->li_bvuri != NULL );
259 assert( !BER_BVISNULL( &li2->li_bvuri[ 0 ] ) );
260 assert( BER_BVISNULL( &li2->li_bvuri[ 1 ] ) );
262 /* If local DNs don't match, it is definitely not a match */
263 return ber_bvcmp( &li1->li_bvuri[ 0 ], &li2->li_bvuri[ 0 ] );
267 ldap_distproc_uri_dup( void *c1, void *c2 )
269 ldapinfo_t *li1 = (ldapinfo_t *)c1;
270 ldapinfo_t *li2 = (ldapinfo_t *)c2;
272 assert( li1->li_bvuri != NULL );
273 assert( !BER_BVISNULL( &li1->li_bvuri[ 0 ] ) );
274 assert( BER_BVISNULL( &li1->li_bvuri[ 1 ] ) );
276 assert( li2->li_bvuri != NULL );
277 assert( !BER_BVISNULL( &li2->li_bvuri[ 0 ] ) );
278 assert( BER_BVISNULL( &li2->li_bvuri[ 1 ] ) );
280 /* Cannot have more than one shared session with same DN */
281 if ( ber_bvcmp( &li1->li_bvuri[ 0 ], &li2->li_bvuri[ 0 ] ) == 0 ) {
289 ldap_distproc_operational( Operation *op, SlapReply *rs )
291 /* Trap entries generated by back-ldap.
293 * FIXME: we need a better way to recognize them; a cleaner
294 * solution would be to be able to intercept the response
295 * of be_operational(), so that we can divert only those
296 * calls that fail because operational attributes were
297 * requested for entries that do not belong to the underlying
298 * database. This fix is likely to intercept also entries
299 * generated by back-perl and so. */
300 if ( rs->sr_entry->e_private == NULL ) {
304 return SLAP_CB_CONTINUE;
308 ldap_distproc_response( Operation *op, SlapReply *rs )
310 return SLAP_CB_CONTINUE;
318 /* NOTE: the chaining behavior control is registered
319 * by the chain overlay; it may move here some time */
326 static ConfigDriver distproc_cfgen;
327 static ConfigCfAdd distproc_cfadd;
328 static ConfigLDAPadd distproc_ldadd;
330 static ConfigTable distproc_cfg[] = {
331 { "distproc-chaining", "args",
332 2, 4, 0, ARG_MAGIC|ARG_BERVAL|DP_CHAINING, distproc_cfgen,
333 /* NOTE: using the same attributeTypes defined
334 * for the "chain" overlay */
335 "( OLcfgOvAt:3.1 NAME 'olcChainingBehavior' "
336 "DESC 'Chaining behavior control parameters (draft-sermersheim-ldap-chaining)' "
337 "SYNTAX OMsDirectoryString SINGLE-VALUE )", NULL, NULL },
338 { "distproc-cache-uri", "TRUE/FALSE",
339 2, 2, 0, ARG_MAGIC|ARG_ON_OFF|DP_CACHE_URI, distproc_cfgen,
340 "( OLcfgOvAt:3.2 NAME 'olcChainCacheURI' "
341 "DESC 'Enables caching of URIs not present in configuration' "
343 "SINGLE-VALUE )", NULL, NULL },
344 { NULL, NULL, 0, 0, 0, ARG_IGNORED }
347 static ConfigOCs distproc_ocs[] = {
349 "NAME 'olcDistProcConfig' "
350 "DESC 'Distributed procedures <draft-sermersheim-ldap-distproc> configuration' "
351 "SUP olcOverlayConfig "
353 "olcChainingBehavior $ "
356 Cft_Overlay, distproc_cfg, NULL, distproc_cfadd },
358 "NAME 'olcDistProcDatabase' "
359 "DESC 'Distributed procedure remote server configuration' "
361 Cft_Misc, distproc_cfg, distproc_ldadd },
366 distproc_ldadd( CfEntryInfo *p, Entry *e, ConfigArgs *ca )
373 AttributeDescription *ad = NULL;
379 if ( p->ce_type != Cft_Overlay
381 || p->ce_bi->bi_cf_ocs != distproc_ocs )
383 return LDAP_CONSTRAINT_VIOLATION;
386 on = (slap_overinst *)p->ce_bi;
387 lc = (ldap_distproc_t *)on->on_bi.bi_private;
389 assert( ca->be == NULL );
390 ca->be = (BackendDB *)ch_calloc( 1, sizeof( BackendDB ) );
392 ca->be->bd_info = (BackendInfo *)on;
394 rc = slap_str2ad( "olcDbURI", &ad, &text );
395 assert( rc == LDAP_SUCCESS );
397 at = attr_find( e->e_attrs, ad );
398 if ( lc->lc_common_li == NULL && at != NULL ) {
399 /* FIXME: we should generate an empty default entry
400 * if none is supplied */
401 Debug( LDAP_DEBUG_ANY, "slapd-distproc: "
402 "first underlying database \"%s\" "
403 "cannot contain attribute \"%s\".\n",
404 e->e_name.bv_val, ad->ad_cname.bv_val, 0 );
405 rc = LDAP_CONSTRAINT_VIOLATION;
408 } else if ( lc->lc_common_li != NULL && at == NULL ) {
409 /* FIXME: we should generate an empty default entry
410 * if none is supplied */
411 Debug( LDAP_DEBUG_ANY, "slapd-distproc: "
412 "subsequent underlying database \"%s\" "
413 "must contain attribute \"%s\".\n",
414 e->e_name.bv_val, ad->ad_cname.bv_val, 0 );
415 rc = LDAP_CONSTRAINT_VIOLATION;
419 if ( lc->lc_common_li == NULL ) {
420 rc = ldap_distproc_db_init_common( ca->be );
423 rc = ldap_distproc_db_init_one( ca->be );
427 Debug( LDAP_DEBUG_ANY, "slapd-distproc: "
428 "unable to init %sunderlying database \"%s\".\n",
429 lc->lc_common_li == NULL ? "common " : "", e->e_name.bv_val, 0 );
430 return LDAP_CONSTRAINT_VIOLATION;
433 li = ca->be->be_private;
435 if ( lc->lc_common_li == NULL ) {
436 lc->lc_common_li = li;
438 } else if ( avl_insert( &lc->lc_lai.lai_tree, (caddr_t)li,
439 ldap_distproc_uri_cmp, ldap_distproc_uri_dup ) )
441 Debug( LDAP_DEBUG_ANY, "slapd-distproc: "
442 "database \"%s\" insert failed.\n",
443 e->e_name.bv_val, 0, 0 );
444 rc = LDAP_CONSTRAINT_VIOLATION;
449 if ( rc != LDAP_SUCCESS ) {
450 (void)ldap_distproc_db_destroy_one( ca->be );
458 typedef struct ldap_distproc_cfadd_apply_t {
464 } ldap_distproc_cfadd_apply_t;
467 ldap_distproc_cfadd_apply( void *datum, void *arg )
469 ldapinfo_t *li = (ldapinfo_t *)datum;
470 ldap_distproc_cfadd_apply_t *lca = (ldap_distproc_cfadd_apply_t *)arg;
474 /* FIXME: should not hardcode "olcDatabase" here */
475 bv.bv_len = snprintf( lca->ca->msg, sizeof( lca->ca->msg ),
476 "olcDatabase={%d}%s", lca->count, lback->bi_type );
477 bv.bv_val = lca->ca->msg;
479 lca->ca->be->be_private = (void *)li;
480 config_build_entry( lca->op, lca->rs, lca->p->e_private, lca->ca,
481 &bv, lback->bi_cf_ocs, &distproc_ocs[ 1 ] );
489 distproc_cfadd( Operation *op, SlapReply *rs, Entry *p, ConfigArgs *ca )
491 CfEntryInfo *pe = p->e_private;
492 slap_overinst *on = (slap_overinst *)pe->ce_bi;
493 ldap_distproc_t *lc = (ldap_distproc_t *)on->on_bi.bi_private;
494 void *priv = (void *)ca->be->be_private;
496 if ( lback->bi_cf_ocs ) {
497 ldap_distproc_cfadd_apply_t lca = { 0 };
505 (void)ldap_distproc_cfadd_apply( (void *)lc->lc_common_li, (void *)&lca );
507 (void)avl_apply( lc->lc_lai.lai_tree, ldap_distproc_cfadd_apply,
508 &lca, 1, AVL_INORDER );
510 ca->be->be_private = priv;
517 distproc_cfgen( ConfigArgs *c )
519 slap_overinst *on = (slap_overinst *)c->bi;
520 ldap_distproc_t *lc = (ldap_distproc_t *)on->on_bi.bi_private;
524 if ( c->op == SLAP_CONFIG_EMIT ) {
527 c->value_int = LDAP_DISTPROC_CACHE_URI( lc );
536 } else if ( c->op == LDAP_MOD_DELETE ) {
542 lc->lc_flags &= ~LDAP_DISTPROC_F_CACHE_URI;
553 if ( c->value_int ) {
554 lc->lc_flags |= LDAP_DISTPROC_F_CACHE_URI;
556 lc->lc_flags &= ~LDAP_DISTPROC_F_CACHE_URI;
569 ldap_distproc_db_init(
572 slap_overinst *on = (slap_overinst *)be->bd_info;
573 ldap_distproc_t *lc = NULL;
575 if ( lback == NULL ) {
576 lback = backend_info( "ldap" );
578 if ( lback == NULL ) {
583 lc = ch_malloc( sizeof( ldap_distproc_t ) );
587 memset( lc, 0, sizeof( ldap_distproc_t ) );
588 ldap_pvt_thread_mutex_init( &lc->lc_lai.lai_mutex );
590 on->on_bi.bi_private = (void *)lc;
596 ldap_distproc_db_config(
603 slap_overinst *on = (slap_overinst *)be->bd_info;
604 ldap_distproc_t *lc = (ldap_distproc_t *)on->on_bi.bi_private;
606 int rc = SLAP_CONF_UNKNOWN;
608 if ( lc->lc_common_li == NULL ) {
609 void *be_private = be->be_private;
610 ldap_distproc_db_init_common( be );
611 lc->lc_common_li = lc->lc_cfg_li = (ldapinfo_t *)be->be_private;
612 be->be_private = be_private;
615 /* Something for the distproc database? */
616 if ( strncasecmp( argv[ 0 ], "distproc-", STRLENOF( "distproc-" ) ) == 0 ) {
617 char *save_argv0 = argv[ 0 ];
618 BackendInfo *bd_info = be->bd_info;
619 void *be_private = be->be_private;
620 ConfigOCs *be_cf_ocs = be->be_cf_ocs;
623 argv[ 0 ] += STRLENOF( "distproc-" );
625 if ( strcasecmp( argv[ 0 ], "uri" ) == 0 ) {
626 rc = ldap_distproc_db_init_one( be );
628 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
629 "underlying slapd-ldap initialization failed.\n.",
633 lc->lc_cfg_li = be->be_private;
637 /* TODO: add checks on what other slapd-ldap(5) args
638 * should be put in the template; this is not quite
639 * harmful, because attributes that shouldn't don't
640 * get actually used, but the user should at least
645 be->be_private = (void *)lc->lc_cfg_li;
646 be->be_cf_ocs = lback->bi_cf_ocs;
648 rc = config_generic_wrapper( be, fname, lineno, argc, argv );
650 argv[ 0 ] = save_argv0;
651 be->be_cf_ocs = be_cf_ocs;
652 be->be_private = be_private;
653 be->bd_info = bd_info;
661 db.be_private = (void *)lc->lc_cfg_li;
662 ldap_distproc_db_destroy_one( &db );
663 lc->lc_cfg_li = NULL;
666 if ( lc->lc_cfg_li->li_bvuri == NULL
667 || BER_BVISNULL( &lc->lc_cfg_li->li_bvuri[ 0 ] )
668 || !BER_BVISNULL( &lc->lc_cfg_li->li_bvuri[ 1 ] ) )
670 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
671 "no URI list allowed in slapo-distproc.\n",
674 goto private_destroy;
677 if ( avl_insert( &lc->lc_lai.lai_tree,
678 (caddr_t)lc->lc_cfg_li,
679 ldap_distproc_uri_cmp, ldap_distproc_uri_dup ) )
681 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
682 "duplicate URI in slapo-distproc.\n",
685 goto private_destroy;
702 typedef struct ldap_distproc_db_apply_t {
705 } ldap_distproc_db_apply_t;
708 ldap_distproc_db_apply( void *datum, void *arg )
710 ldapinfo_t *li = (ldapinfo_t *)datum;
711 ldap_distproc_db_apply_t *lca = (ldap_distproc_db_apply_t *)arg;
713 lca->be->be_private = (void *)li;
715 return lca->func( lca->be );
719 ldap_distproc_db_func(
724 slap_overinst *on = (slap_overinst *)be->bd_info;
725 ldap_distproc_t *lc = (ldap_distproc_t *)on->on_bi.bi_private;
730 BI_db_func *func = (&lback->bi_db_open)[ which ];
732 if ( func != NULL && lc->lc_common_li != NULL ) {
736 db.be_private = lc->lc_common_li;
744 if ( lc->lc_lai.lai_tree != NULL ) {
745 ldap_distproc_db_apply_t lca;
750 rc = avl_apply( lc->lc_lai.lai_tree,
751 ldap_distproc_db_apply, (void *)&lca,
752 1, AVL_INORDER ) != AVL_NOMORE;
761 ldap_distproc_db_open(
764 return ldap_distproc_db_func( be, db_open );
768 ldap_distproc_db_close(
771 return ldap_distproc_db_func( be, db_close );
775 ldap_distproc_db_destroy(
778 slap_overinst *on = (slap_overinst *) be->bd_info;
779 ldap_distproc_t *lc = (ldap_distproc_t *)on->on_bi.bi_private;
783 rc = ldap_distproc_db_func( be, db_destroy );
786 avl_free( lc->lc_lai.lai_tree, NULL );
787 ldap_pvt_thread_mutex_destroy( &lc->lc_lai.lai_mutex );
795 * inits one instance of the slapd-ldap backend, and stores
796 * the private info in be_private of the arg
799 ldap_distproc_db_init_common(
802 BackendInfo *bi = be->bd_info;
806 be->be_private = NULL;
807 t = lback->bi_db_init( be );
817 * inits one instance of the slapd-ldap backend, stores
818 * the private info in be_private of the arg and fills
819 * selected fields with data from the template.
821 * NOTE: add checks about the other fields of the template,
822 * which are ignored and SHOULD NOT be configured by the user.
825 ldap_distproc_db_init_one(
828 slap_overinst *on = (slap_overinst *)be->bd_info;
829 ldap_distproc_t *lc = (ldap_distproc_t *)on->on_bi.bi_private;
831 BackendInfo *bi = be->bd_info;
837 be->be_private = NULL;
838 t = lback->bi_db_init( be );
842 li = (ldapinfo_t *)be->be_private;
844 /* copy common data */
845 li->li_nretries = lc->lc_common_li->li_nretries;
846 li->li_flags = lc->lc_common_li->li_flags;
847 li->li_version = lc->lc_common_li->li_version;
848 for ( t = 0; t < LDAP_BACK_OP_LAST; t++ ) {
849 li->li_timeout[ t ] = lc->lc_common_li->li_timeout[ t ];
856 typedef struct ldap_distproc_conn_apply_t {
859 } ldap_distproc_conn_apply_t;
862 ldap_distproc_conn_apply( void *datum, void *arg )
864 ldapinfo_t *li = (ldapinfo_t *)datum;
865 ldap_distproc_conn_apply_t *lca = (ldap_distproc_conn_apply_t *)arg;
867 lca->be->be_private = (void *)li;
869 return lback->bi_connection_destroy( lca->be, lca->conn );
873 ldap_distproc_connection_destroy(
878 slap_overinst *on = (slap_overinst *) be->bd_info;
879 ldap_distproc_t *lc = (ldap_distproc_t *)on->on_bi.bi_private;
880 void *private = be->be_private;
881 ldap_distproc_conn_apply_t lca;
884 be->be_private = NULL;
887 ldap_pvt_thread_mutex_lock( &lc->lc_lai.lai_mutex );
888 rc = avl_apply( lc->lc_lai.lai_tree, ldap_distproc_conn_apply,
889 (void *)&lca, 1, AVL_INORDER ) != AVL_NOMORE;
890 ldap_pvt_thread_mutex_unlock( &lc->lc_lai.lai_mutex );
891 be->be_private = private;
897 ldap_distproc_parse_returnContRef_ctrl(
902 if ( get_returnContRef( op ) != SLAP_CONTROL_NONE ) {
903 rs->sr_text = "returnContinuationReference control specified multiple times";
904 return LDAP_PROTOCOL_ERROR;
907 if ( op->o_pagedresults != SLAP_CONTROL_NONE ) {
908 rs->sr_text = "returnContinuationReference control specified with pagedResults control";
909 return LDAP_PROTOCOL_ERROR;
912 if ( !BER_BVISEMPTY( &ctrl->ldctl_value ) ) {
913 rs->sr_text = "returnContinuationReference control: value must be NULL";
914 return LDAP_PROTOCOL_ERROR;
917 op->o_returnContRef = ctrl->ldctl_iscritical ? SLAP_CONTROL_CRITICAL : SLAP_CONTROL_NONCRITICAL;
923 ldap_exop_chained_request(
927 Statslog( LDAP_DEBUG_STATS, "%s CHAINED REQUEST\n",
928 op->o_log_prefix, 0, 0, 0, 0 );
930 rs->sr_err = backend_check_restrictions( op, rs,
931 (struct berval *)&slap_EXOP_CHAINEDREQUEST );
932 if ( rs->sr_err != LDAP_SUCCESS ) {
936 /* by now, just reject requests */
937 rs->sr_text = "under development";
938 return LDAP_UNWILLING_TO_PERFORM;
942 static slap_overinst distproc;
945 distproc_initialize( void )
949 /* Make sure we don't exceed the bits reserved for userland */
950 config_check_userland( DP_LAST );
952 rc = load_extop( (struct berval *)&slap_EXOP_CHAINEDREQUEST,
953 SLAP_EXOP_HIDE, ldap_exop_chained_request );
954 if ( rc != LDAP_SUCCESS ) {
955 Debug( LDAP_DEBUG_ANY, "slapd-distproc: "
956 "unable to register chainedRequest exop: %d.\n",
962 rc = supported_feature_load( &slap_FEATURE_CANCHAINOPS );
963 if ( rc != LDAP_SUCCESS ) {
964 Debug( LDAP_DEBUG_ANY, "slapd-distproc: "
965 "unable to register canChainOperations supported feature: %d.\n",
971 rc = register_supported_control( LDAP_CONTROL_X_RETURNCONTREF,
972 SLAP_CTRL_GLOBAL|SLAP_CTRL_ACCESS|SLAP_CTRL_HIDE, NULL,
973 ldap_distproc_parse_returnContRef_ctrl, &sc_returnContRef );
974 if ( rc != LDAP_SUCCESS ) {
975 Debug( LDAP_DEBUG_ANY, "slapd-distproc: "
976 "unable to register returnContinuationReference control: %d.\n",
981 distproc.on_bi.bi_type = "distproc";
982 distproc.on_bi.bi_db_init = ldap_distproc_db_init;
983 distproc.on_bi.bi_db_config = ldap_distproc_db_config;
984 distproc.on_bi.bi_db_open = ldap_distproc_db_open;
985 distproc.on_bi.bi_db_close = ldap_distproc_db_close;
986 distproc.on_bi.bi_db_destroy = ldap_distproc_db_destroy;
988 /* ... otherwise the underlying backend's function would be called,
989 * likely passing an invalid entry; on the contrary, the requested
990 * operational attributes should have been returned while chasing
991 * the referrals. This all in all is a bit messy, because part
992 * of the operational attributes are generated by the backend;
993 * part by the frontend; back-ldap should receive all the available
994 * ones from the remote server, but then, on its own, it strips those
995 * it assumes will be (re)generated by the frontend (e.g.
996 * subschemaSubentry, entryDN, ...) */
997 distproc.on_bi.bi_operational = ldap_distproc_operational;
999 distproc.on_bi.bi_connection_destroy = ldap_distproc_connection_destroy;
1001 distproc.on_response = ldap_distproc_response;
1003 distproc.on_bi.bi_cf_ocs = distproc_ocs;
1005 rc = config_register_schema( distproc_cfg, distproc_ocs );
1010 return overlay_register( &distproc );
1013 #endif /* SLAP_DISTPROC */