1 /* $NetBSD: init.c,v 1.1.1.5 2014/05/28 09:58:50 tron Exp $ */ 2 3 /* $OpenLDAP$ */ 4 /* This work is part of OpenLDAP Software <http://www.openldap.org/>. 5 * 6 * Copyright 1999-2014 The OpenLDAP Foundation. 7 * Portions Copyright 2001-2003 Pierangelo Masarati. 8 * Portions Copyright 1999-2003 Howard Chu. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted only as authorized by the OpenLDAP 13 * Public License. 14 * 15 * A copy of this license is available in the file LICENSE in the 16 * top-level directory of the distribution or, alternatively, at 17 * <http://www.OpenLDAP.org/license.html>. 18 */ 19 20 #include "portable.h" 21 22 #include <stdio.h> 23 24 #include <ac/string.h> 25 #include <ac/socket.h> 26 27 #include "slap.h" 28 #include "config.h" 29 #include "../back-ldap/back-ldap.h" 30 #include "back-meta.h" 31 32 int 33 meta_back_open( 34 BackendInfo *bi ) 35 { 36 /* FIXME: need to remove the pagedResults, and likely more... */ 37 bi->bi_controls = slap_known_controls; 38 39 return 0; 40 } 41 42 int 43 meta_back_initialize( 44 BackendInfo *bi ) 45 { 46 bi->bi_flags = 47 #if 0 48 /* this is not (yet) set essentially because back-meta does not 49 * directly support extended operations... */ 50 #ifdef LDAP_DYNAMIC_OBJECTS 51 /* this is set because all the support a proxy has to provide 52 * is the capability to forward the refresh exop, and to 53 * pass thru entries that contain the dynamicObject class 54 * and the entryTtl attribute */ 55 SLAP_BFLAG_DYNAMIC | 56 #endif /* LDAP_DYNAMIC_OBJECTS */ 57 #endif 58 59 /* back-meta recognizes RFC4525 increment; 60 * let the remote server complain, if needed (ITS#5912) */ 61 SLAP_BFLAG_INCREMENT; 62 63 bi->bi_open = meta_back_open; 64 bi->bi_config = 0; 65 bi->bi_close = 0; 66 bi->bi_destroy = 0; 67 68 bi->bi_db_init = meta_back_db_init; 69 bi->bi_db_config = config_generic_wrapper; 70 bi->bi_db_open = meta_back_db_open; 71 bi->bi_db_close = 0; 72 bi->bi_db_destroy = meta_back_db_destroy; 73 74 bi->bi_op_bind = meta_back_bind; 75 bi->bi_op_unbind = 0; 76 bi->bi_op_search = meta_back_search; 77 bi->bi_op_compare = meta_back_compare; 78 bi->bi_op_modify = meta_back_modify; 79 bi->bi_op_modrdn = meta_back_modrdn; 80 bi->bi_op_add = meta_back_add; 81 bi->bi_op_delete = meta_back_delete; 82 bi->bi_op_abandon = 0; 83 84 bi->bi_extended = 0; 85 86 bi->bi_chk_referrals = 0; 87 88 bi->bi_connection_init = 0; 89 bi->bi_connection_destroy = meta_back_conn_destroy; 90 91 return meta_back_init_cf( bi ); 92 } 93 94 int 95 meta_back_db_init( 96 Backend *be, 97 ConfigReply *cr) 98 { 99 metainfo_t *mi; 100 int i; 101 BackendInfo *bi; 102 103 bi = backend_info( "ldap" ); 104 if ( !bi || !bi->bi_extra ) { 105 Debug( LDAP_DEBUG_ANY, 106 "meta_back_db_init: needs back-ldap\n", 107 0, 0, 0 ); 108 return 1; 109 } 110 111 mi = ch_calloc( 1, sizeof( metainfo_t ) ); 112 if ( mi == NULL ) { 113 return -1; 114 } 115 116 /* set default flags */ 117 mi->mi_flags = 118 META_BACK_F_DEFER_ROOTDN_BIND 119 | META_BACK_F_PROXYAUTHZ_ALWAYS 120 | META_BACK_F_PROXYAUTHZ_ANON 121 | META_BACK_F_PROXYAUTHZ_NOANON; 122 123 /* 124 * At present the default is no default target; 125 * this may change 126 */ 127 mi->mi_defaulttarget = META_DEFAULT_TARGET_NONE; 128 mi->mi_bind_timeout.tv_sec = 0; 129 mi->mi_bind_timeout.tv_usec = META_BIND_TIMEOUT; 130 131 mi->mi_rebind_f = meta_back_default_rebind; 132 mi->mi_urllist_f = meta_back_default_urllist; 133 134 ldap_pvt_thread_mutex_init( &mi->mi_conninfo.lai_mutex ); 135 ldap_pvt_thread_mutex_init( &mi->mi_cache.mutex ); 136 137 /* safe default */ 138 mi->mi_nretries = META_RETRY_DEFAULT; 139 mi->mi_version = LDAP_VERSION3; 140 141 for ( i = LDAP_BACK_PCONN_FIRST; i < LDAP_BACK_PCONN_LAST; i++ ) { 142 mi->mi_conn_priv[ i ].mic_num = 0; 143 LDAP_TAILQ_INIT( &mi->mi_conn_priv[ i ].mic_priv ); 144 } 145 mi->mi_conn_priv_max = LDAP_BACK_CONN_PRIV_DEFAULT; 146 147 mi->mi_ldap_extra = (ldap_extra_t *)bi->bi_extra; 148 149 be->be_private = mi; 150 be->be_cf_ocs = be->bd_info->bi_cf_ocs; 151 152 return 0; 153 } 154 155 int 156 meta_target_finish( 157 metainfo_t *mi, 158 metatarget_t *mt, 159 const char *log, 160 char *msg, 161 size_t msize 162 ) 163 { 164 slap_bindconf sb = { BER_BVNULL }; 165 struct berval mapped; 166 int rc; 167 168 ber_str2bv( mt->mt_uri, 0, 0, &sb.sb_uri ); 169 sb.sb_version = mt->mt_version; 170 sb.sb_method = LDAP_AUTH_SIMPLE; 171 BER_BVSTR( &sb.sb_binddn, "" ); 172 173 if ( META_BACK_TGT_T_F_DISCOVER( mt ) ) { 174 rc = slap_discover_feature( &sb, 175 slap_schema.si_ad_supportedFeatures->ad_cname.bv_val, 176 LDAP_FEATURE_ABSOLUTE_FILTERS ); 177 if ( rc == LDAP_COMPARE_TRUE ) { 178 mt->mt_flags |= LDAP_BACK_F_T_F; 179 } 180 } 181 182 if ( META_BACK_TGT_CANCEL_DISCOVER( mt ) ) { 183 rc = slap_discover_feature( &sb, 184 slap_schema.si_ad_supportedExtension->ad_cname.bv_val, 185 LDAP_EXOP_CANCEL ); 186 if ( rc == LDAP_COMPARE_TRUE ) { 187 mt->mt_flags |= LDAP_BACK_F_CANCEL_EXOP; 188 } 189 } 190 191 if ( !( mt->mt_idassert_flags & LDAP_BACK_AUTH_OVERRIDE ) 192 || mt->mt_idassert_authz != NULL ) 193 { 194 mi->mi_flags &= ~META_BACK_F_PROXYAUTHZ_ALWAYS; 195 } 196 197 if ( ( mt->mt_idassert_flags & LDAP_BACK_AUTH_AUTHZ_ALL ) 198 && !( mt->mt_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) ) 199 { 200 snprintf( msg, msize, 201 "%s: inconsistent idassert configuration " 202 "(likely authz=\"*\" used with \"non-prescriptive\" flag)", 203 log ); 204 Debug( LDAP_DEBUG_ANY, "%s (target %s)\n", 205 msg, mt->mt_uri, 0 ); 206 return 1; 207 } 208 209 if ( !( mt->mt_idassert_flags & LDAP_BACK_AUTH_AUTHZ_ALL ) ) 210 { 211 mi->mi_flags &= ~META_BACK_F_PROXYAUTHZ_ANON; 212 } 213 214 if ( ( mt->mt_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) ) 215 { 216 mi->mi_flags &= ~META_BACK_F_PROXYAUTHZ_NOANON; 217 } 218 219 BER_BVZERO( &mapped ); 220 ldap_back_map( &mt->mt_rwmap.rwm_at, 221 &slap_schema.si_ad_entryDN->ad_cname, &mapped, 222 BACKLDAP_REMAP ); 223 if ( BER_BVISNULL( &mapped ) || mapped.bv_val[0] == '\0' ) { 224 mt->mt_rep_flags |= REP_NO_ENTRYDN; 225 } 226 227 BER_BVZERO( &mapped ); 228 ldap_back_map( &mt->mt_rwmap.rwm_at, 229 &slap_schema.si_ad_subschemaSubentry->ad_cname, &mapped, 230 BACKLDAP_REMAP ); 231 if ( BER_BVISNULL( &mapped ) || mapped.bv_val[0] == '\0' ) { 232 mt->mt_rep_flags |= REP_NO_SUBSCHEMA; 233 } 234 235 return 0; 236 } 237 238 int 239 meta_back_db_open( 240 Backend *be, 241 ConfigReply *cr ) 242 { 243 metainfo_t *mi = (metainfo_t *)be->be_private; 244 char msg[SLAP_TEXT_BUFLEN]; 245 246 int i, rc; 247 248 if ( mi->mi_ntargets == 0 ) { 249 /* Dynamically added, nothing to check here until 250 * some targets get added 251 */ 252 if ( slapMode & SLAP_SERVER_RUNNING ) 253 return 0; 254 255 Debug( LDAP_DEBUG_ANY, 256 "meta_back_db_open: no targets defined\n", 257 0, 0, 0 ); 258 return 1; 259 } 260 261 for ( i = 0; i < mi->mi_ntargets; i++ ) { 262 metatarget_t *mt = mi->mi_targets[ i ]; 263 264 if ( meta_target_finish( mi, mt, 265 "meta_back_db_open", msg, sizeof( msg ))) 266 return 1; 267 } 268 269 return 0; 270 } 271 272 /* 273 * meta_back_conn_free() 274 * 275 * actually frees a connection; the reference count must be 0, 276 * and it must not (or no longer) be in the cache. 277 */ 278 void 279 meta_back_conn_free( 280 void *v_mc ) 281 { 282 metaconn_t *mc = v_mc; 283 int ntargets; 284 285 assert( mc != NULL ); 286 assert( mc->mc_refcnt == 0 ); 287 288 /* at least one must be present... */ 289 ntargets = mc->mc_info->mi_ntargets; 290 assert( ntargets > 0 ); 291 292 for ( ; ntargets--; ) { 293 (void)meta_clear_one_candidate( NULL, mc, ntargets ); 294 } 295 296 if ( !BER_BVISNULL( &mc->mc_local_ndn ) ) { 297 free( mc->mc_local_ndn.bv_val ); 298 } 299 300 free( mc ); 301 } 302 303 static void 304 mapping_free( 305 void *v_mapping ) 306 { 307 struct ldapmapping *mapping = v_mapping; 308 ch_free( mapping->src.bv_val ); 309 ch_free( mapping->dst.bv_val ); 310 ch_free( mapping ); 311 } 312 313 static void 314 mapping_dst_free( 315 void *v_mapping ) 316 { 317 struct ldapmapping *mapping = v_mapping; 318 319 if ( BER_BVISEMPTY( &mapping->dst ) ) { 320 mapping_free( &mapping[ -1 ] ); 321 } 322 } 323 324 void 325 meta_back_map_free( struct ldapmap *lm ) 326 { 327 avl_free( lm->remap, mapping_dst_free ); 328 avl_free( lm->map, mapping_free ); 329 lm->remap = NULL; 330 lm->map = NULL; 331 } 332 333 static void 334 target_free( 335 metatarget_t *mt ) 336 { 337 if ( mt->mt_uri ) { 338 free( mt->mt_uri ); 339 ldap_pvt_thread_mutex_destroy( &mt->mt_uri_mutex ); 340 } 341 if ( mt->mt_subtree ) { 342 meta_subtree_destroy( mt->mt_subtree ); 343 mt->mt_subtree = NULL; 344 } 345 if ( mt->mt_filter ) { 346 meta_filter_destroy( mt->mt_filter ); 347 mt->mt_filter = NULL; 348 } 349 if ( !BER_BVISNULL( &mt->mt_psuffix ) ) { 350 free( mt->mt_psuffix.bv_val ); 351 } 352 if ( !BER_BVISNULL( &mt->mt_nsuffix ) ) { 353 free( mt->mt_nsuffix.bv_val ); 354 } 355 if ( !BER_BVISNULL( &mt->mt_binddn ) ) { 356 free( mt->mt_binddn.bv_val ); 357 } 358 if ( !BER_BVISNULL( &mt->mt_bindpw ) ) { 359 free( mt->mt_bindpw.bv_val ); 360 } 361 if ( !BER_BVISNULL( &mt->mt_idassert_authcID ) ) { 362 ch_free( mt->mt_idassert_authcID.bv_val ); 363 } 364 if ( !BER_BVISNULL( &mt->mt_idassert_authcDN ) ) { 365 ch_free( mt->mt_idassert_authcDN.bv_val ); 366 } 367 if ( !BER_BVISNULL( &mt->mt_idassert_passwd ) ) { 368 ch_free( mt->mt_idassert_passwd.bv_val ); 369 } 370 if ( !BER_BVISNULL( &mt->mt_idassert_authzID ) ) { 371 ch_free( mt->mt_idassert_authzID.bv_val ); 372 } 373 if ( !BER_BVISNULL( &mt->mt_idassert_sasl_mech ) ) { 374 ch_free( mt->mt_idassert_sasl_mech.bv_val ); 375 } 376 if ( !BER_BVISNULL( &mt->mt_idassert_sasl_realm ) ) { 377 ch_free( mt->mt_idassert_sasl_realm.bv_val ); 378 } 379 if ( mt->mt_idassert_authz != NULL ) { 380 ber_bvarray_free( mt->mt_idassert_authz ); 381 } 382 if ( mt->mt_rwmap.rwm_rw ) { 383 rewrite_info_delete( &mt->mt_rwmap.rwm_rw ); 384 if ( mt->mt_rwmap.rwm_bva_rewrite ) 385 ber_bvarray_free( mt->mt_rwmap.rwm_bva_rewrite ); 386 } 387 meta_back_map_free( &mt->mt_rwmap.rwm_oc ); 388 meta_back_map_free( &mt->mt_rwmap.rwm_at ); 389 ber_bvarray_free( mt->mt_rwmap.rwm_bva_map ); 390 391 free( mt ); 392 } 393 394 int 395 meta_back_db_destroy( 396 Backend *be, 397 ConfigReply *cr ) 398 { 399 metainfo_t *mi; 400 401 if ( be->be_private ) { 402 int i; 403 404 mi = ( metainfo_t * )be->be_private; 405 406 /* 407 * Destroy the connection tree 408 */ 409 ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex ); 410 411 if ( mi->mi_conninfo.lai_tree ) { 412 avl_free( mi->mi_conninfo.lai_tree, meta_back_conn_free ); 413 } 414 for ( i = LDAP_BACK_PCONN_FIRST; i < LDAP_BACK_PCONN_LAST; i++ ) { 415 while ( !LDAP_TAILQ_EMPTY( &mi->mi_conn_priv[ i ].mic_priv ) ) { 416 metaconn_t *mc = LDAP_TAILQ_FIRST( &mi->mi_conn_priv[ i ].mic_priv ); 417 418 LDAP_TAILQ_REMOVE( &mi->mi_conn_priv[ i ].mic_priv, mc, mc_q ); 419 meta_back_conn_free( mc ); 420 } 421 } 422 423 /* 424 * Destroy the per-target stuff (assuming there's at 425 * least one ...) 426 */ 427 if ( mi->mi_targets != NULL ) { 428 for ( i = 0; i < mi->mi_ntargets; i++ ) { 429 metatarget_t *mt = mi->mi_targets[ i ]; 430 431 if ( META_BACK_TGT_QUARANTINE( mt ) ) { 432 if ( mt->mt_quarantine.ri_num != mi->mi_quarantine.ri_num ) 433 { 434 mi->mi_ldap_extra->retry_info_destroy( &mt->mt_quarantine ); 435 } 436 437 ldap_pvt_thread_mutex_destroy( &mt->mt_quarantine_mutex ); 438 } 439 440 target_free( mt ); 441 } 442 443 free( mi->mi_targets ); 444 } 445 446 ldap_pvt_thread_mutex_lock( &mi->mi_cache.mutex ); 447 if ( mi->mi_cache.tree ) { 448 avl_free( mi->mi_cache.tree, meta_dncache_free ); 449 } 450 451 ldap_pvt_thread_mutex_unlock( &mi->mi_cache.mutex ); 452 ldap_pvt_thread_mutex_destroy( &mi->mi_cache.mutex ); 453 454 ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex ); 455 ldap_pvt_thread_mutex_destroy( &mi->mi_conninfo.lai_mutex ); 456 457 if ( mi->mi_candidates != NULL ) { 458 ber_memfree_x( mi->mi_candidates, NULL ); 459 } 460 461 if ( META_BACK_QUARANTINE( mi ) ) { 462 mi->mi_ldap_extra->retry_info_destroy( &mi->mi_quarantine ); 463 } 464 } 465 466 free( be->be_private ); 467 return 0; 468 } 469 470 #if SLAPD_META == SLAPD_MOD_DYNAMIC 471 472 /* conditionally define the init_module() function */ 473 SLAP_BACKEND_INIT_MODULE( meta ) 474 475 #endif /* SLAPD_META == SLAPD_MOD_DYNAMIC */ 476 477 478