3 * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
4 * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
6 /* backend.c - routines for dealing with back-end databases */
13 #include <ac/string.h>
14 #include <ac/socket.h>
22 #include "back-bdb/external.h"
25 #include "back-dnssrv/external.h"
28 #include "back-ldap/external.h"
31 #include "back-ldbm/external.h"
34 #include "back-passwd/external.h"
37 #include "back-perl/external.h"
40 #include "back-shell/external.h"
43 #include "back-tcl/external.h"
46 #include "back-sql/external.h"
49 #include "private/external.h"
52 static BackendInfo binfo[] = {
53 #if defined(SLAPD_BDB) && !defined(SLAPD_BDB_DYNAMIC)
54 {"bdb", bdb_initialize},
56 #if defined(SLAPD_DNSSRV) && !defined(SLAPD_DNSSRV_DYNAMIC)
57 {"dnssrv", dnssrv_back_initialize},
59 #if defined(SLAPD_LDAP) && !defined(SLAPD_LDAP_DYNAMIC)
60 {"ldap", ldap_back_initialize},
62 #if defined(SLAPD_LDBM) && !defined(SLAPD_LDBM_DYNAMIC)
63 {"ldbm", ldbm_back_initialize},
65 #if defined(SLAPD_PASSWD) && !defined(SLAPD_PASSWD_DYNAMIC)
66 {"passwd", passwd_back_initialize},
68 #if defined(SLAPD_PERL) && !defined(SLAPD_PERL_DYNAMIC)
69 {"perl", perl_back_initialize},
71 #if defined(SLAPD_SHELL) && !defined(SLAPD_SHELL_DYNAMIC)
72 {"shell", shell_back_initialize},
74 #if defined(SLAPD_TCL) && !defined(SLAPD_TCL_DYNAMIC)
75 {"tcl", tcl_back_initialize},
77 #if defined(SLAPD_SQL) && !defined(SLAPD_SQL_DYNAMIC)
78 {"sql", sql_back_initialize},
80 /* for any private backend */
81 #if defined(SLAPD_PRIVATE) && !defined(SLAPD_PRIVATE_DYNAMIC)
82 {"private", private_back_initialize},
88 BackendInfo *backendInfo = NULL;
91 BackendDB *backendDB = NULL;
93 int backend_init(void)
97 if((nBackendInfo != 0) || (backendInfo != NULL)) {
98 /* already initialized */
100 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
101 "backend_init: backend already initialized\n" ));
103 Debug( LDAP_DEBUG_ANY,
104 "backend_init: already initialized.\n", 0, 0, 0 );
110 binfo[nBackendInfo].bi_type != NULL;
113 rc = binfo[nBackendInfo].bi_init( &binfo[nBackendInfo] );
117 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
118 "backend_init: initialized for type \"%s\"\n",
119 binfo[nBackendInfo].bi_type ));
121 Debug( LDAP_DEBUG_ANY,
122 "backend_init: initialized for type \"%s\"\n",
123 binfo[nBackendInfo].bi_type, 0, 0 );
125 /* destroy those we've already inited */
130 if ( binfo[nBackendInfo].bi_destroy ) {
131 binfo[nBackendInfo].bi_destroy(
132 &binfo[nBackendInfo] );
139 if ( nBackendInfo > 0) {
149 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
150 "backend_init: failed\n" ));
152 Debug( LDAP_DEBUG_ANY,
153 "backend_init: failed\n",
158 #endif /* SLAPD_MODULES */
161 int backend_add(BackendInfo *aBackendInfo)
165 if ((rc = aBackendInfo->bi_init(aBackendInfo)) != 0) {
167 LDAP_LOG(( "backend", LDAP_LEVEL_ERR,
168 "backend_add: initialization for type \"%s\" failed\n",
169 aBackendInfo->bi_type ));
171 Debug( LDAP_DEBUG_ANY,
172 "backend_add: initialization for type \"%s\" failed\n",
173 aBackendInfo->bi_type, 0, 0 );
178 /* now add the backend type to the Backend Info List */
180 BackendInfo *newBackendInfo = 0;
182 /* if backendInfo == binfo no deallocation of old backendInfo */
183 if (backendInfo == binfo) {
184 newBackendInfo = ch_calloc(nBackendInfo + 1, sizeof(BackendInfo));
185 AC_MEMCPY(newBackendInfo, backendInfo, sizeof(BackendInfo) *
188 newBackendInfo = ch_realloc(backendInfo, sizeof(BackendInfo) *
191 AC_MEMCPY(&newBackendInfo[nBackendInfo], aBackendInfo,
192 sizeof(BackendInfo));
193 backendInfo = newBackendInfo;
200 int backend_startup(Backend *be)
205 if( ! ( nBackendDB > 0 ) ) {
208 LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
209 "backend_startup: %d databases to startup. \n",
212 Debug( LDAP_DEBUG_ANY,
213 "backend_startup: %d databases to startup.\n",
220 /* startup a specific backend database */
222 LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
223 "backend_startup: starting \"%s\"\n",
226 Debug( LDAP_DEBUG_TRACE,
227 "backend_startup: starting \"%s\"\n",
228 be->be_suffix[0], 0, 0 );
231 if ( be->bd_info->bi_open ) {
232 rc = be->bd_info->bi_open( be->bd_info );
237 LDAP_LOG(( "backend", LDAP_LEVEL_CRIT,
238 "backend_startup: bi_open failed!\n" ));
240 Debug( LDAP_DEBUG_ANY,
241 "backend_startup: bi_open failed!\n",
248 if ( be->bd_info->bi_db_open ) {
249 rc = be->bd_info->bi_db_open( be );
254 LDAP_LOG(( "backend", LDAP_LEVEL_CRIT,
255 "backend_startup: bi_db_open failed!\n" ));
257 Debug( LDAP_DEBUG_ANY,
258 "backend_startup: bi_db_open failed!\n",
267 /* open each backend type */
268 for( i = 0; i < nBackendInfo; i++ ) {
269 if( backendInfo[i].bi_nDB == 0) {
270 /* no database of this type, don't open */
274 if( backendInfo[i].bi_open ) {
275 rc = backendInfo[i].bi_open(
281 LDAP_LOG(( "backend", LDAP_LEVEL_CRIT,
282 "backend_startup: bi_open %d failed!\n", i ));
284 Debug( LDAP_DEBUG_ANY,
285 "backend_startup: bi_open %d failed!\n",
292 /* open each backend database */
293 for( i = 0; i < nBackendDB; i++ ) {
294 /* append global access controls */
295 acl_append( &backendDB[i].be_acl, global_acl );
297 if ( backendDB[i].bd_info->bi_db_open ) {
298 rc = backendDB[i].bd_info->bi_db_open(
304 LDAP_LOG(( "backend", LDAP_LEVEL_CRIT,
305 "backend_startup: bi_db_open %d failed!\n", i ));
307 Debug( LDAP_DEBUG_ANY,
308 "backend_startup: bi_db_open %d failed!\n",
318 int backend_num( Backend *be )
322 if( be == NULL ) return -1;
324 for( i = 0; i < nBackendDB; i++ ) {
325 if( be == &backendDB[i] ) return i;
330 int backend_shutdown( Backend *be )
336 /* shutdown a specific backend database */
338 if ( be->bd_info->bi_nDB == 0 ) {
339 /* no database of this type, we never opened it */
343 if ( be->bd_info->bi_db_close ) {
344 be->bd_info->bi_db_close( be );
347 if( be->bd_info->bi_close ) {
348 be->bd_info->bi_close( be->bd_info );
354 /* close each backend database */
355 for( i = 0; i < nBackendDB; i++ ) {
356 if ( backendDB[i].bd_info->bi_db_close ) {
357 backendDB[i].bd_info->bi_db_close(
363 LDAP_LOG(( "backend", LDAP_LEVEL_NOTICE,
364 "backend_shutdown: bi_close %s failed!\n",
365 backendDB[i].be_type ));
367 Debug( LDAP_DEBUG_ANY,
368 "backend_close: bi_close %s failed!\n",
369 backendDB[i].be_type, 0, 0 );
374 /* close each backend type */
375 for( i = 0; i < nBackendInfo; i++ ) {
376 if( backendInfo[i].bi_nDB == 0 ) {
377 /* no database of this type */
381 if( backendInfo[i].bi_close ) {
382 backendInfo[i].bi_close(
390 int backend_destroy(void)
394 /* destroy each backend database */
395 for( i = 0; i < nBackendDB; i++ ) {
396 if ( backendDB[i].bd_info->bi_db_destroy ) {
397 backendDB[i].bd_info->bi_db_destroy(
402 /* destroy each backend type */
403 for( i = 0; i < nBackendInfo; i++ ) {
404 if( backendInfo[i].bi_destroy ) {
405 backendInfo[i].bi_destroy(
411 if (backendInfo != binfo) {
414 #endif /* SLAPD_MODULES */
422 BackendInfo* backend_info(const char *type)
426 /* search for the backend type */
427 for( i = 0; i < nBackendInfo; i++ ) {
428 if( strcasecmp(backendInfo[i].bi_type, type) == 0 ) {
429 return &backendInfo[i];
443 BackendInfo *bi = backend_info(type);
447 fprintf( stderr, "Unrecognized database type (%s)\n", type );
451 backendDB = (BackendDB *) ch_realloc(
453 (nBackendDB + 1) * sizeof(Backend) );
455 memset( &backendDB[nbackends], '\0', sizeof(Backend) );
457 be = &backends[nbackends++];
460 be->be_sizelimit = defsize;
461 be->be_timelimit = deftime;
462 be->be_dfltaccess = global_default_access;
464 be->be_restrictops = global_restrictops;
465 be->be_requires = global_requires;
467 /* assign a default depth limit for alias deref */
468 be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH;
471 rc = bi->bi_db_init( be );
475 fprintf( stderr, "database init failed (%s)\n", type );
489 for ( i = 0; i < nbackends; i++ ) {
490 if ( backends[i].bd_info->bi_db_close ) {
491 (*backends[i].bd_info->bi_db_close)( &backends[i] );
501 int i, j, len, dnlen;
504 dnlen = strlen( dn );
505 for ( i = 0; i < nbackends; i++ ) {
506 for ( j = 0; backends[i].be_nsuffix != NULL &&
507 backends[i].be_nsuffix[j] != NULL; j++ )
509 len = strlen( backends[i].be_nsuffix[j] );
515 if ( strcmp( backends[i].be_nsuffix[j],
516 dn + (dnlen - len) ) == 0 )
521 if( manageDSAit && len == dnlen ) {
543 for ( i = 0; be->be_nsuffix != NULL && be->be_nsuffix[i] != NULL; i++ ) {
544 if ( strcmp( be->be_nsuffix[i], suffix ) == 0 ) {
553 be_isroot( Backend *be, const char *ndn )
557 if ( ndn == NULL || *ndn == '\0' ) {
561 if ( be->be_root_ndn == NULL || *be->be_root_ndn == '\0' ) {
565 rc = strcmp( be->be_root_ndn, ndn ) ? 0 : 1;
571 be_root_dn( Backend *be )
573 if ( be->be_root_dn == NULL ) {
577 return be->be_root_dn;
581 be_isroot_pw( Backend *be,
584 struct berval *cred )
588 if ( ! be_isroot( be, ndn ) ) {
592 if( be->be_root_pw.bv_len == 0 ) {
596 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
597 ldap_pvt_thread_mutex_lock( &passwd_mutex );
599 lutil_passwd_sasl_conn = conn->c_sasl_context;
603 result = lutil_passwd( &be->be_root_pw, cred, NULL );
605 #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD )
607 lutil_passwd_sasl_conn = NULL;
609 ldap_pvt_thread_mutex_unlock( &passwd_mutex );
623 if ( be->be_release ) {
624 /* free and release entry from backend */
625 return be->be_release( be, conn, op, e, rw );
641 for ( i = 0; i < nbackends; i++ ) {
642 if ( backends[i].be_unbind ) {
643 (*backends[i].be_unbind)( &backends[i], conn, op );
651 backend_connection_init(
657 for ( i = 0; i < nbackends; i++ ) {
658 if ( backends[i].be_connection_init ) {
659 (*backends[i].be_connection_init)( &backends[i], conn);
667 backend_connection_destroy(
673 for ( i = 0; i < nbackends; i++ ) {
674 if ( backends[i].be_connection_destroy ) {
675 (*backends[i].be_connection_destroy)( &backends[i], conn);
683 backend_check_controls(
691 if( ctrls == NULL ) {
695 for( ; *ctrls != NULL ; ctrls++ ) {
696 if( (*ctrls)->ldctl_iscritical &&
697 !charray_inlist( be->be_controls, (*ctrls)->ldctl_oid ) )
699 *text = "control unavailable in NamingContext";
700 return LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
708 backend_check_restrictions(
716 slap_mask_t restrictops;
717 slap_mask_t requires;
723 rc = backend_check_controls( be, conn, op, text );
725 if( rc != LDAP_SUCCESS ) {
729 restrictops = be->be_restrictops;
730 requires = be->be_requires;
731 ssf = &be->be_ssf_set;
734 restrictops = global_restrictops;
735 requires = global_requires;
736 ssf = &global_ssf_set;
739 switch( op->o_tag ) {
741 opflag = SLAP_RESTRICT_OP_ADD;
745 opflag = SLAP_RESTRICT_OP_BIND;
747 case LDAP_REQ_COMPARE:
748 opflag = SLAP_RESTRICT_OP_COMPARE;
750 case LDAP_REQ_DELETE:
752 opflag = SLAP_RESTRICT_OP_DELETE;
754 case LDAP_REQ_EXTENDED:
755 opflag = SLAP_RESTRICT_OP_EXTENDED;
757 case LDAP_REQ_MODIFY:
759 opflag = SLAP_RESTRICT_OP_MODIFY;
761 case LDAP_REQ_RENAME:
763 opflag = SLAP_RESTRICT_OP_RENAME;
765 case LDAP_REQ_SEARCH:
766 opflag = SLAP_RESTRICT_OP_SEARCH;
768 case LDAP_REQ_UNBIND:
772 *text = "restrict operations internal error";
776 if ( op->o_tag != LDAP_REQ_EXTENDED
777 || strcmp( (const char *) opdata, LDAP_EXOP_START_TLS ) )
779 /* these checks don't apply to StartTLS */
781 if( op->o_tag == LDAP_REQ_EXTENDED ) {
782 /* threat other extended operations as update ops */
786 if( op->o_transport_ssf < ssf->sss_transport ) {
787 *text = "transport confidentiality required";
788 return LDAP_CONFIDENTIALITY_REQUIRED;
791 if( op->o_tls_ssf < ssf->sss_tls ) {
792 *text = "TLS confidentiality required";
793 return LDAP_CONFIDENTIALITY_REQUIRED;
796 if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) {
797 /* these checks don't apply to SASL bind */
799 if( op->o_sasl_ssf < ssf->sss_sasl ) {
800 *text = "SASL confidentiality required";
801 return LDAP_CONFIDENTIALITY_REQUIRED;
804 if( op->o_ssf < ssf->sss_ssf ) {
805 *text = "confidentiality required";
806 return LDAP_CONFIDENTIALITY_REQUIRED;
811 if( op->o_transport_ssf < ssf->sss_update_transport ) {
812 *text = "transport update confidentiality required";
813 return LDAP_CONFIDENTIALITY_REQUIRED;
816 if( op->o_tls_ssf < ssf->sss_update_tls ) {
817 *text = "TLS update confidentiality required";
818 return LDAP_CONFIDENTIALITY_REQUIRED;
821 if( op->o_sasl_ssf < ssf->sss_update_sasl ) {
822 *text = "SASL update confidentiality required";
823 return LDAP_CONFIDENTIALITY_REQUIRED;
826 if( op->o_ssf < ssf->sss_update_ssf ) {
827 *text = "update confidentiality required";
828 return LDAP_CONFIDENTIALITY_REQUIRED;
833 if ( op->o_tag != LDAP_REQ_BIND && ( op->o_tag != LDAP_REQ_EXTENDED ||
834 strcmp( (const char *) opdata, LDAP_EXOP_START_TLS ) ) )
836 /* these checks don't apply to Bind or StartTLS */
838 if( requires & SLAP_REQUIRE_STRONG ) {
839 /* should check mechanism */
840 if( op->o_authmech == NULL ||
841 op->o_dn == NULL || *op->o_dn == '\0' )
843 *text = "strong authentication required";
844 return LDAP_STRONG_AUTH_REQUIRED;
848 if( requires & SLAP_REQUIRE_SASL ) {
849 if( op->o_authmech == NULL ||
850 op->o_dn == NULL || *op->o_dn == '\0' )
852 *text = "SASL authentication required";
853 return LDAP_STRONG_AUTH_REQUIRED;
857 if( requires & SLAP_REQUIRE_AUTHC ) {
858 if( op->o_dn == NULL || *op->o_dn == '\0' ) {
859 *text = "authentication required";
860 return LDAP_UNWILLING_TO_PERFORM;
864 if( requires & SLAP_REQUIRE_BIND ) {
866 ldap_pvt_thread_mutex_lock( &conn->c_mutex );
867 version = conn->c_protocol;
868 ldap_pvt_thread_mutex_unlock( &conn->c_mutex );
871 /* no bind has occurred */
872 *text = "BIND required";
873 return LDAP_OPERATIONS_ERROR;
877 if( requires & SLAP_REQUIRE_LDAP_V3 ) {
878 if( op->o_protocol < LDAP_VERSION3 ) {
879 /* no bind has occurred */
880 *text = "operation restricted to LDAPv3 clients";
881 return LDAP_OPERATIONS_ERROR;
886 if( restrictops & opflag ) {
887 if( restrictops == SLAP_RESTRICT_OP_READS ) {
888 *text = "read operations restricted";
890 *text = "operation restricted";
892 return LDAP_UNWILLING_TO_PERFORM;
898 int backend_check_referrals(
905 int rc = LDAP_SUCCESS;
907 if( be->be_chk_referrals ) {
910 rc = be->be_chk_referrals( be,
911 conn, op, dn, ndn, &text );
913 if( rc != LDAP_SUCCESS && rc != LDAP_REFERRAL ) {
914 send_ldap_result( conn, op, rc,
915 NULL, text, NULL, NULL );
930 ObjectClass *group_oc,
931 AttributeDescription *group_at
934 if( strcmp( target->e_ndn, gr_ndn ) != 0 ) {
935 /* we won't attempt to send it to a different backend */
937 be = select_backend(gr_ndn, 0);
940 return LDAP_NO_SUCH_OBJECT;
945 return be->be_group( be, conn, op,
946 target, gr_ndn, op_ndn,
947 group_oc, group_at );
950 return LDAP_UNWILLING_TO_PERFORM;
960 AttributeDescription *entry_at,
961 struct berval ***vals
964 if( target == NULL || strcmp( target->e_ndn, e_ndn ) != 0 ) {
965 /* we won't attempt to send it to a different backend */
967 be = select_backend(e_ndn, 0);
970 return LDAP_NO_SUCH_OBJECT;
974 if( be->be_attribute ) {
975 return be->be_attribute( be, conn, op, target, e_ndn,
979 return LDAP_UNWILLING_TO_PERFORM;
982 Attribute *backend_operational(
990 #ifdef SLAPD_SCHEMA_DN
991 a = ch_malloc( sizeof( Attribute ) );
992 a->a_desc = ad_dup( slap_schema.si_ad_subschemaSubentry );
994 /* Should be backend specific */
995 a->a_vals = ch_malloc( 2 * sizeof( struct berval * ) );
996 a->a_vals[0] = ber_bvstrdup( SLAPD_SCHEMA_DN );