external/bsd/openldap/dist/servers/slapd/back-meta/init.c

   1 /* $OpenLDAP: pkg/ldap/servers/slapd/back-meta/init.c,v 1.58.2.10 2008/07/09 23:48:40 quanah Exp $ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 1999-2008 The OpenLDAP Foundation.
   5  * Portions Copyright 2001-2003 Pierangelo Masarati.
   6  * Portions Copyright 1999-2003 Howard Chu.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted only as authorized by the OpenLDAP
  11  * Public License.
  12  *
  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>.
  16  */
  17
  18 #include "portable.h"
  19
  20 #include <stdio.h>
  21
  22 #include <ac/string.h>
  23 #include <ac/socket.h>
  24
  25 #include "slap.h"
  26 #include "config.h"
  27 #include "../back-ldap/back-ldap.h"
  28 #include "back-meta.h"
  29
  30 int
  31 meta_back_open(
  32         BackendInfo     *bi )
  33 {
  34         /* FIXME: need to remove the pagedResults, and likely more... */
  35         bi->bi_controls = slap_known_controls;
  36
  37         return 0;
  38 }
  39
  40 int
  41 meta_back_initialize(
  42         BackendInfo     *bi )
  43 {
  44         bi->bi_flags =
  45 #if 0
  46         /* this is not (yet) set essentially because back-meta does not
  47          * directly support extended operations... */
  48 #ifdef LDAP_DYNAMIC_OBJECTS
  49                 /* this is set because all the support a proxy has to provide
  50                  * is the capability to forward the refresh exop, and to
  51                  * pass thru entries that contain the dynamicObject class
  52                  * and the entryTtl attribute */
  53                 SLAP_BFLAG_DYNAMIC |
  54 #endif /* LDAP_DYNAMIC_OBJECTS */
  55 #endif
  56                 0;
  57
  58         bi->bi_open = meta_back_open;
  59         bi->bi_config = 0;
  60         bi->bi_close = 0;
  61         bi->bi_destroy = 0;
  62
  63         bi->bi_db_init = meta_back_db_init;
  64         bi->bi_db_config = meta_back_db_config;
  65         bi->bi_db_open = meta_back_db_open;
  66         bi->bi_db_close = 0;
  67         bi->bi_db_destroy = meta_back_db_destroy;
  68
  69         bi->bi_op_bind = meta_back_bind;
  70         bi->bi_op_unbind = 0;
  71         bi->bi_op_search = meta_back_search;
  72         bi->bi_op_compare = meta_back_compare;
  73         bi->bi_op_modify = meta_back_modify;
  74         bi->bi_op_modrdn = meta_back_modrdn;
  75         bi->bi_op_add = meta_back_add;
  76         bi->bi_op_delete = meta_back_delete;
  77         bi->bi_op_abandon = 0;
  78
  79         bi->bi_extended = 0;
  80
  81         bi->bi_chk_referrals = 0;
  82
  83         bi->bi_connection_init = 0;
  84         bi->bi_connection_destroy = meta_back_conn_destroy;
  85
  86         return 0;
  87 }
  88
  89 int
  90 meta_back_db_init(
  91         Backend         *be,
  92         ConfigReply     *cr)
  93 {
  94         metainfo_t      *mi;
  95         int             i;
  96         BackendInfo     *bi;
  97
  98         bi = backend_info( "ldap" );
  99         if ( !bi || !bi->bi_extra ) {
 100                 Debug( LDAP_DEBUG_ANY,
 101                         "meta_back_db_init: needs back-ldap\n",
 102                         0, 0, 0 );
 103                 return 1;
 104         }
 105
 106         mi = ch_calloc( 1, sizeof( metainfo_t ) );
 107         if ( mi == NULL ) {
 108                 return -1;
 109         }
 110
 111         /* set default flags */
 112         mi->mi_flags =
 113                 META_BACK_F_DEFER_ROOTDN_BIND;
 114
 115         /*
 116          * At present the default is no default target;
 117          * this may change
 118          */
 119         mi->mi_defaulttarget = META_DEFAULT_TARGET_NONE;
 120         mi->mi_bind_timeout.tv_sec = 0;
 121         mi->mi_bind_timeout.tv_usec = META_BIND_TIMEOUT;
 122
 123         mi->mi_rebind_f = meta_back_default_rebind;
 124         mi->mi_urllist_f = meta_back_default_urllist;
 125
 126         ldap_pvt_thread_mutex_init( &mi->mi_conninfo.lai_mutex );
 127         ldap_pvt_thread_mutex_init( &mi->mi_cache.mutex );
 128
 129         /* safe default */
 130         mi->mi_nretries = META_RETRY_DEFAULT;
 131         mi->mi_version = LDAP_VERSION3;
 132
 133         for ( i = LDAP_BACK_PCONN_FIRST; i < LDAP_BACK_PCONN_LAST; i++ ) {
 134                 mi->mi_conn_priv[ i ].mic_num = 0;
 135                 LDAP_TAILQ_INIT( &mi->mi_conn_priv[ i ].mic_priv );
 136         }
 137         mi->mi_conn_priv_max = LDAP_BACK_CONN_PRIV_DEFAULT;
 138
 139         mi->mi_ldap_extra = (ldap_extra_t *)bi->bi_extra;
 140
 141         be->be_private = mi;
 142
 143         return 0;
 144 }
 145
 146 int
 147 meta_back_db_open(
 148         Backend         *be,
 149         ConfigReply     *cr )
 150 {
 151         metainfo_t      *mi = (metainfo_t *)be->be_private;
 152
 153         int             i,
 154                         not_always = 0,
 155                         not_always_anon_proxyauthz = 0,
 156                         not_always_anon_non_prescriptive = 0,
 157                         rc;
 158
 159         if ( mi->mi_ntargets == 0 ) {
 160                 Debug( LDAP_DEBUG_ANY,
 161                         "meta_back_db_open: no targets defined\n",
 162                         0, 0, 0 );
 163                 return 1;
 164         }
 165
 166         for ( i = 0; i < mi->mi_ntargets; i++ ) {
 167                 slap_bindconf   sb = { BER_BVNULL };
 168                 metatarget_t    *mt = mi->mi_targets[ i ];
 169
 170                 ber_str2bv( mt->mt_uri, 0, 0, &sb.sb_uri );
 171                 sb.sb_version = mt->mt_version;
 172                 sb.sb_method = LDAP_AUTH_SIMPLE;
 173                 BER_BVSTR( &sb.sb_binddn, "" );
 174
 175                 if ( META_BACK_TGT_T_F_DISCOVER( mt ) ) {
 176                         rc = slap_discover_feature( &sb,
 177                                         slap_schema.si_ad_supportedFeatures->ad_cname.bv_val,
 178                                         LDAP_FEATURE_ABSOLUTE_FILTERS );
 179                         if ( rc == LDAP_COMPARE_TRUE ) {
 180                                 mt->mt_flags |= LDAP_BACK_F_T_F;
 181                         }
 182                 }
 183
 184                 if ( META_BACK_TGT_CANCEL_DISCOVER( mt ) ) {
 185                         rc = slap_discover_feature( &sb,
 186                                         slap_schema.si_ad_supportedExtension->ad_cname.bv_val,
 187                                         LDAP_EXOP_CANCEL );
 188                         if ( rc == LDAP_COMPARE_TRUE ) {
 189                                 mt->mt_flags |= LDAP_BACK_F_CANCEL_EXOP;
 190                         }
 191                 }
 192
 193                 if ( not_always == 0 ) {
 194                         if ( !( mt->mt_idassert_flags & LDAP_BACK_AUTH_OVERRIDE )
 195                                 || mt->mt_idassert_authz != NULL )
 196                         {
 197                                 not_always = 1;
 198                         }
 199                 }
 200
 201                 if ( ( mt->mt_idassert_flags & LDAP_BACK_AUTH_AUTHZ_ALL )
 202                         && !( mt->mt_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) )
 203                 {
 204                         Debug( LDAP_DEBUG_ANY, "meta_back_db_open(%s): "
 205                                 "target #%d inconsistent idassert configuration "
 206                                 "(likely authz=\"*\" used with \"non-prescriptive\" flag)\n",
 207                                 be->be_suffix[ 0 ].bv_val, i, 0 );
 208                         return 1;
 209                 }
 210
 211                 if ( not_always_anon_proxyauthz == 0 ) {
 212                         if ( !( mt->mt_idassert_flags & LDAP_BACK_AUTH_AUTHZ_ALL ) )
 213                         {
 214                                 not_always_anon_proxyauthz = 1;
 215                         }
 216                 }
 217
 218                 if ( not_always_anon_non_prescriptive == 0 ) {
 219                         if ( ( mt->mt_idassert_flags & LDAP_BACK_AUTH_PRESCRIPTIVE ) )
 220                         {
 221                                 not_always_anon_non_prescriptive = 1;
 222                         }
 223                 }
 224         }
 225
 226         if ( not_always == 0 ) {
 227                 mi->mi_flags |= META_BACK_F_PROXYAUTHZ_ALWAYS;
 228         }
 229
 230         if ( not_always_anon_proxyauthz == 0 ) {
 231                 mi->mi_flags |= META_BACK_F_PROXYAUTHZ_ANON;
 232
 233         } else if ( not_always_anon_non_prescriptive == 0 ) {
 234                 mi->mi_flags |= META_BACK_F_PROXYAUTHZ_NOANON;
 235         }
 236
 237         return 0;
 238 }
 239
 240 /*
 241  * meta_back_conn_free()
 242  *
 243  * actually frees a connection; the reference count must be 0,
 244  * and it must not (or no longer) be in the cache.
 245  */
 246 void
 247 meta_back_conn_free(
 248         void            *v_mc )
 249 {
 250         metaconn_t              *mc = v_mc;
 251         int                     ntargets;
 252
 253         assert( mc != NULL );
 254         assert( mc->mc_refcnt == 0 );
 255
 256         /* at least one must be present... */
 257         ntargets = mc->mc_info->mi_ntargets;
 258         assert( ntargets > 0 );
 259
 260         for ( ; ntargets--; ) {
 261                 (void)meta_clear_one_candidate( NULL, mc, ntargets );
 262         }
 263
 264         if ( !BER_BVISNULL( &mc->mc_local_ndn ) ) {
 265                 free( mc->mc_local_ndn.bv_val );
 266         }
 267
 268         free( mc );
 269 }
 270
 271 static void
 272 mapping_free(
 273         void            *v_mapping )
 274 {
 275         struct ldapmapping *mapping = v_mapping;
 276         ch_free( mapping->src.bv_val );
 277         ch_free( mapping->dst.bv_val );
 278         ch_free( mapping );
 279 }
 280
 281 static void
 282 mapping_dst_free(
 283         void            *v_mapping )
 284 {
 285         struct ldapmapping *mapping = v_mapping;
 286
 287         if ( BER_BVISEMPTY( &mapping->dst ) ) {
 288                 mapping_free( &mapping[ -1 ] );
 289         }
 290 }
 291
 292 static void
 293 target_free(
 294         metatarget_t    *mt )
 295 {
 296         if ( mt->mt_uri ) {
 297                 free( mt->mt_uri );
 298                 ldap_pvt_thread_mutex_destroy( &mt->mt_uri_mutex );
 299         }
 300         if ( mt->mt_subtree_exclude ) {
 301                 ber_bvarray_free( mt->mt_subtree_exclude );
 302         }
 303         if ( !BER_BVISNULL( &mt->mt_psuffix ) ) {
 304                 free( mt->mt_psuffix.bv_val );
 305         }
 306         if ( !BER_BVISNULL( &mt->mt_nsuffix ) ) {
 307                 free( mt->mt_nsuffix.bv_val );
 308         }
 309         if ( !BER_BVISNULL( &mt->mt_binddn ) ) {
 310                 free( mt->mt_binddn.bv_val );
 311         }
 312         if ( !BER_BVISNULL( &mt->mt_bindpw ) ) {
 313                 free( mt->mt_bindpw.bv_val );
 314         }
 315         if ( !BER_BVISNULL( &mt->mt_idassert_authcID ) ) {
 316                 ch_free( mt->mt_idassert_authcID.bv_val );
 317         }
 318         if ( !BER_BVISNULL( &mt->mt_idassert_authcDN ) ) {
 319                 ch_free( mt->mt_idassert_authcDN.bv_val );
 320         }
 321         if ( !BER_BVISNULL( &mt->mt_idassert_passwd ) ) {
 322                 ch_free( mt->mt_idassert_passwd.bv_val );
 323         }
 324         if ( !BER_BVISNULL( &mt->mt_idassert_authzID ) ) {
 325                 ch_free( mt->mt_idassert_authzID.bv_val );
 326         }
 327         if ( !BER_BVISNULL( &mt->mt_idassert_sasl_mech ) ) {
 328                 ch_free( mt->mt_idassert_sasl_mech.bv_val );
 329         }
 330         if ( !BER_BVISNULL( &mt->mt_idassert_sasl_realm ) ) {
 331                 ch_free( mt->mt_idassert_sasl_realm.bv_val );
 332         }
 333         if ( mt->mt_idassert_authz != NULL ) {
 334                 ber_bvarray_free( mt->mt_idassert_authz );
 335         }
 336         if ( mt->mt_rwmap.rwm_rw ) {
 337                 rewrite_info_delete( &mt->mt_rwmap.rwm_rw );
 338         }
 339         avl_free( mt->mt_rwmap.rwm_oc.remap, mapping_dst_free );
 340         avl_free( mt->mt_rwmap.rwm_oc.map, mapping_free );
 341         avl_free( mt->mt_rwmap.rwm_at.remap, mapping_dst_free );
 342         avl_free( mt->mt_rwmap.rwm_at.map, mapping_free );
 343
 344         free( mt );
 345 }
 346
 347 int
 348 meta_back_db_destroy(
 349         Backend         *be,
 350         ConfigReply     *cr )
 351 {
 352         metainfo_t      *mi;
 353
 354         if ( be->be_private ) {
 355                 int i;
 356
 357                 mi = ( metainfo_t * )be->be_private;
 358
 359                 /*
 360                  * Destroy the connection tree
 361                  */
 362                 ldap_pvt_thread_mutex_lock( &mi->mi_conninfo.lai_mutex );
 363
 364                 if ( mi->mi_conninfo.lai_tree ) {
 365                         avl_free( mi->mi_conninfo.lai_tree, meta_back_conn_free );
 366                 }
 367                 for ( i = LDAP_BACK_PCONN_FIRST; i < LDAP_BACK_PCONN_LAST; i++ ) {
 368                         while ( !LDAP_TAILQ_EMPTY( &mi->mi_conn_priv[ i ].mic_priv ) ) {
 369                                 metaconn_t      *mc = LDAP_TAILQ_FIRST( &mi->mi_conn_priv[ i ].mic_priv );
 370
 371                                 LDAP_TAILQ_REMOVE( &mi->mi_conn_priv[ i ].mic_priv, mc, mc_q );
 372                                 meta_back_conn_free( mc );
 373                         }
 374                 }
 375
 376                 /*
 377                  * Destroy the per-target stuff (assuming there's at
 378                  * least one ...)
 379                  */
 380                 if ( mi->mi_targets != NULL ) {
 381                         for ( i = 0; i < mi->mi_ntargets; i++ ) {
 382                                 metatarget_t    *mt = mi->mi_targets[ i ];
 383
 384                                 if ( META_BACK_TGT_QUARANTINE( mt ) ) {
 385                                         if ( mt->mt_quarantine.ri_num != mi->mi_quarantine.ri_num )
 386                                         {
 387                                                 mi->mi_ldap_extra->retry_info_destroy( &mt->mt_quarantine );
 388                                         }
 389
 390                                         ldap_pvt_thread_mutex_destroy( &mt->mt_quarantine_mutex );
 391                                 }
 392
 393                                 target_free( mt );
 394                         }
 395
 396                         free( mi->mi_targets );
 397                 }
 398
 399                 ldap_pvt_thread_mutex_lock( &mi->mi_cache.mutex );
 400                 if ( mi->mi_cache.tree ) {
 401                         avl_free( mi->mi_cache.tree, meta_dncache_free );
 402                 }
 403
 404                 ldap_pvt_thread_mutex_unlock( &mi->mi_cache.mutex );
 405                 ldap_pvt_thread_mutex_destroy( &mi->mi_cache.mutex );
 406
 407                 ldap_pvt_thread_mutex_unlock( &mi->mi_conninfo.lai_mutex );
 408                 ldap_pvt_thread_mutex_destroy( &mi->mi_conninfo.lai_mutex );
 409
 410                 if ( mi->mi_candidates != NULL ) {
 411                         ber_memfree_x( mi->mi_candidates, NULL );
 412                 }
 413
 414                 if ( META_BACK_QUARANTINE( mi ) ) {
 415                         mi->mi_ldap_extra->retry_info_destroy( &mi->mi_quarantine );
 416                 }
 417         }
 418
 419         free( be->be_private );
 420         return 0;
 421 }
 422
 423 #if SLAPD_META == SLAPD_MOD_DYNAMIC
 424
 425 /* conditionally define the init_module() function */
 426 SLAP_BACKEND_INIT_MODULE( meta )
 427
 428 #endif /* SLAPD_META == SLAPD_MOD_DYNAMIC */
 429
 430