git.sur5r.net Git - openldap/blob - servers/slapd/back-ldap/init.c

   1 /* init.c - initialize ldap backend */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2003-2009 The OpenLDAP Foundation.
   6  * Portions Copyright 1999-2003 Howard Chu.
   7  * Portions Copyright 2000-2003 Pierangelo Masarati.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted only as authorized by the OpenLDAP
  12  * Public License.
  13  *
  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>.
  17  */
  18 /* ACKNOWLEDGEMENTS:
  19  * This work was initially developed by the Howard Chu for inclusion
  20  * in OpenLDAP Software and subsequently enhanced by Pierangelo
  21  * Masarati.
  22  */
  23
  24 #include "portable.h"
  25
  26 #include <stdio.h>
  27
  28 #include <ac/string.h>
  29 #include <ac/socket.h>
  30
  31 #include "slap.h"
  32 #include "config.h"
  33 #include "back-ldap.h"
  34
  35 static const ldap_extra_t ldap_extra = {
  36         ldap_back_proxy_authz_ctrl,
  37         ldap_back_controls_free,
  38         slap_idassert_authzfrom_parse_cf,
  39         slap_idassert_parse_cf,
  40         slap_retry_info_destroy,
  41         slap_retry_info_parse,
  42         slap_retry_info_unparse,
  43         ldap_back_connid2str
  44 };
  45
  46 int
  47 ldap_back_open( BackendInfo     *bi )
  48 {
  49         bi->bi_controls = slap_known_controls;
  50         return 0;
  51 }
  52
  53 int
  54 ldap_back_initialize( BackendInfo *bi )
  55 {
  56         int             rc;
  57
  58         bi->bi_flags =
  59 #ifdef LDAP_DYNAMIC_OBJECTS
  60                 /* this is set because all the support a proxy has to provide
  61                  * is the capability to forward the refresh exop, and to
  62                  * pass thru entries that contain the dynamicObject class
  63                  * and the entryTtl attribute */
  64                 SLAP_BFLAG_DYNAMIC |
  65 #endif /* LDAP_DYNAMIC_OBJECTS */
  66
  67                 /* back-ldap recognizes RFC4525 increment;
  68                  * let the remote server complain, if needed (ITS#5912) */
  69                 SLAP_BFLAG_INCREMENT;
  70
  71         bi->bi_open = ldap_back_open;
  72         bi->bi_config = 0;
  73         bi->bi_close = 0;
  74         bi->bi_destroy = 0;
  75
  76         bi->bi_db_init = ldap_back_db_init;
  77         bi->bi_db_config = config_generic_wrapper;
  78         bi->bi_db_open = ldap_back_db_open;
  79         bi->bi_db_close = ldap_back_db_close;
  80         bi->bi_db_destroy = ldap_back_db_destroy;
  81
  82         bi->bi_op_bind = ldap_back_bind;
  83         bi->bi_op_unbind = 0;
  84         bi->bi_op_search = ldap_back_search;
  85         bi->bi_op_compare = ldap_back_compare;
  86         bi->bi_op_modify = ldap_back_modify;
  87         bi->bi_op_modrdn = ldap_back_modrdn;
  88         bi->bi_op_add = ldap_back_add;
  89         bi->bi_op_delete = ldap_back_delete;
  90         bi->bi_op_abandon = 0;
  91
  92         bi->bi_extended = ldap_back_extended;
  93
  94         bi->bi_chk_referrals = 0;
  95         bi->bi_entry_get_rw = ldap_back_entry_get;
  96
  97         bi->bi_connection_init = 0;
  98         bi->bi_connection_destroy = ldap_back_conn_destroy;
  99
 100         bi->bi_extra = (void *)&ldap_extra;
 101
 102         rc = chain_initialize();
 103         if ( rc ) {
 104                 return rc;
 105         }
 106
 107 #ifdef SLAP_DISTPROC
 108         rc = distproc_initialize();
 109         if ( rc ) {
 110                 return rc;
 111         }
 112 #endif
 113
 114         return ldap_back_init_cf( bi );
 115 }
 116
 117 int
 118 ldap_back_db_init( Backend *be, ConfigReply *cr )
 119 {
 120         ldapinfo_t      *li;
 121         int             rc;
 122         unsigned        i;
 123
 124         li = (ldapinfo_t *)ch_calloc( 1, sizeof( ldapinfo_t ) );
 125         if ( li == NULL ) {
 126                 return -1;
 127         }
 128
 129         li->li_rebind_f = ldap_back_default_rebind;
 130         li->li_urllist_f = ldap_back_default_urllist;
 131         li->li_urllist_p = li;
 132         ldap_pvt_thread_mutex_init( &li->li_uri_mutex );
 133
 134         BER_BVZERO( &li->li_acl_authcID );
 135         BER_BVZERO( &li->li_acl_authcDN );
 136         BER_BVZERO( &li->li_acl_passwd );
 137
 138         li->li_acl_authmethod = LDAP_AUTH_NONE;
 139         BER_BVZERO( &li->li_acl_sasl_mech );
 140         li->li_acl.sb_tls = SB_TLS_DEFAULT;
 141
 142         li->li_idassert_mode = LDAP_BACK_IDASSERT_LEGACY;
 143
 144         BER_BVZERO( &li->li_idassert_authcID );
 145         BER_BVZERO( &li->li_idassert_authcDN );
 146         BER_BVZERO( &li->li_idassert_passwd );
 147
 148         BER_BVZERO( &li->li_idassert_authzID );
 149
 150         li->li_idassert_authmethod = LDAP_AUTH_NONE;
 151         BER_BVZERO( &li->li_idassert_sasl_mech );
 152         li->li_idassert_tls = SB_TLS_DEFAULT;
 153
 154         /* by default, use proxyAuthz control on each operation */
 155         li->li_idassert_flags = LDAP_BACK_AUTH_PRESCRIPTIVE;
 156
 157         li->li_idassert_authz = NULL;
 158
 159         /* initialize flags */
 160         li->li_flags = LDAP_BACK_F_CHASE_REFERRALS;
 161
 162         /* initialize version */
 163         li->li_version = LDAP_VERSION3;
 164
 165         ldap_pvt_thread_mutex_init( &li->li_conninfo.lai_mutex );
 166
 167         for ( i = LDAP_BACK_PCONN_FIRST; i < LDAP_BACK_PCONN_LAST; i++ ) {
 168                 li->li_conn_priv[ i ].lic_num = 0;
 169                 LDAP_TAILQ_INIT( &li->li_conn_priv[ i ].lic_priv );
 170         }
 171         li->li_conn_priv_max = LDAP_BACK_CONN_PRIV_DEFAULT;
 172
 173         be->be_private = li;
 174         SLAP_DBFLAGS( be ) |= SLAP_DBFLAG_NOLASTMOD;
 175
 176         be->be_cf_ocs = be->bd_info->bi_cf_ocs;
 177
 178         rc = ldap_back_monitor_db_init( be );
 179         if ( rc != 0 ) {
 180                 /* ignore, by now */
 181                 rc = 0;
 182         }
 183
 184         return rc;
 185 }
 186
 187 int
 188 ldap_back_db_open( BackendDB *be, ConfigReply *cr )
 189 {
 190         ldapinfo_t      *li = (ldapinfo_t *)be->be_private;
 191
 192         slap_bindconf   sb = { BER_BVNULL };
 193         int             rc = 0;
 194
 195         Debug( LDAP_DEBUG_TRACE,
 196                 "ldap_back_db_open: URI=%s\n",
 197                 li->li_uri != NULL ? li->li_uri : "", 0, 0 );
 198
 199         /* by default, use proxyAuthz control on each operation */
 200         switch ( li->li_idassert_mode ) {
 201         case LDAP_BACK_IDASSERT_LEGACY:
 202         case LDAP_BACK_IDASSERT_SELF:
 203                 /* however, since admin connections are pooled and shared,
 204                  * only static authzIDs can be native */
 205                 li->li_idassert_flags &= ~LDAP_BACK_AUTH_NATIVE_AUTHZ;
 206                 break;
 207
 208         default:
 209                 break;
 210         }
 211
 212         ber_str2bv( li->li_uri, 0, 0, &sb.sb_uri );
 213         sb.sb_version = li->li_version;
 214         sb.sb_method = LDAP_AUTH_SIMPLE;
 215         BER_BVSTR( &sb.sb_binddn, "" );
 216
 217         if ( LDAP_BACK_T_F_DISCOVER( li ) && !LDAP_BACK_T_F( li ) ) {
 218                 rc = slap_discover_feature( &sb,
 219                                 slap_schema.si_ad_supportedFeatures->ad_cname.bv_val,
 220                                 LDAP_FEATURE_ABSOLUTE_FILTERS );
 221                 if ( rc == LDAP_COMPARE_TRUE ) {
 222                         li->li_flags |= LDAP_BACK_F_T_F;
 223                 }
 224         }
 225
 226         if ( LDAP_BACK_CANCEL_DISCOVER( li ) && !LDAP_BACK_CANCEL( li ) ) {
 227                 rc = slap_discover_feature( &sb,
 228                                 slap_schema.si_ad_supportedExtension->ad_cname.bv_val,
 229                                 LDAP_EXOP_CANCEL );
 230                 if ( rc == LDAP_COMPARE_TRUE ) {
 231                         li->li_flags |= LDAP_BACK_F_CANCEL_EXOP;
 232                 }
 233         }
 234
 235         /* monitor setup */
 236         rc = ldap_back_monitor_db_open( be );
 237         if ( rc != 0 ) {
 238                 /* ignore by now */
 239                 rc = 0;
 240         }
 241
 242         li->li_flags |= LDAP_BACK_F_ISOPEN;
 243
 244         return rc;
 245 }
 246
 247 void
 248 ldap_back_conn_free( void *v_lc )
 249 {
 250         ldapconn_t      *lc = v_lc;
 251
 252         if ( lc->lc_ld != NULL ) {
 253                 ldap_unbind_ext( lc->lc_ld, NULL, NULL );
 254         }
 255         if ( !BER_BVISNULL( &lc->lc_bound_ndn ) ) {
 256                 ch_free( lc->lc_bound_ndn.bv_val );
 257         }
 258         if ( !BER_BVISNULL( &lc->lc_cred ) ) {
 259                 memset( lc->lc_cred.bv_val, 0, lc->lc_cred.bv_len );
 260                 ch_free( lc->lc_cred.bv_val );
 261         }
 262         if ( !BER_BVISNULL( &lc->lc_local_ndn ) ) {
 263                 ch_free( lc->lc_local_ndn.bv_val );
 264         }
 265         lc->lc_q.tqe_prev = NULL;
 266         lc->lc_q.tqe_next = NULL;
 267         ch_free( lc );
 268 }
 269
 270 int
 271 ldap_back_db_close( Backend *be, ConfigReply *cr )
 272 {
 273         int             rc = 0;
 274
 275         if ( be->be_private ) {
 276                 rc = ldap_back_monitor_db_close( be );
 277         }
 278
 279         return rc;
 280 }
 281
 282 int
 283 ldap_back_db_destroy( Backend *be, ConfigReply *cr )
 284 {
 285         if ( be->be_private ) {
 286                 ldapinfo_t      *li = ( ldapinfo_t * )be->be_private;
 287                 unsigned        i;
 288
 289                 (void)ldap_back_monitor_db_destroy( be );
 290
 291                 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
 292
 293                 if ( li->li_uri != NULL ) {
 294                         ch_free( li->li_uri );
 295                         li->li_uri = NULL;
 296
 297                         assert( li->li_bvuri != NULL );
 298                         ber_bvarray_free( li->li_bvuri );
 299                         li->li_bvuri = NULL;
 300                 }
 301                 if ( !BER_BVISNULL( &li->li_acl_authcID ) ) {
 302                         ch_free( li->li_acl_authcID.bv_val );
 303                         BER_BVZERO( &li->li_acl_authcID );
 304                 }
 305                 if ( !BER_BVISNULL( &li->li_acl_authcDN ) ) {
 306                         ch_free( li->li_acl_authcDN.bv_val );
 307                         BER_BVZERO( &li->li_acl_authcDN );
 308                 }
 309                 if ( !BER_BVISNULL( &li->li_acl_passwd ) ) {
 310                         ch_free( li->li_acl_passwd.bv_val );
 311                         BER_BVZERO( &li->li_acl_passwd );
 312                 }
 313                 if ( !BER_BVISNULL( &li->li_acl_sasl_mech ) ) {
 314                         ch_free( li->li_acl_sasl_mech.bv_val );
 315                         BER_BVZERO( &li->li_acl_sasl_mech );
 316                 }
 317                 if ( !BER_BVISNULL( &li->li_acl_sasl_realm ) ) {
 318                         ch_free( li->li_acl_sasl_realm.bv_val );
 319                         BER_BVZERO( &li->li_acl_sasl_realm );
 320                 }
 321                 if ( !BER_BVISNULL( &li->li_idassert_authcID ) ) {
 322                         ch_free( li->li_idassert_authcID.bv_val );
 323                         BER_BVZERO( &li->li_idassert_authcID );
 324                 }
 325                 if ( !BER_BVISNULL( &li->li_idassert_authcDN ) ) {
 326                         ch_free( li->li_idassert_authcDN.bv_val );
 327                         BER_BVZERO( &li->li_idassert_authcDN );
 328                 }
 329                 if ( !BER_BVISNULL( &li->li_idassert_passwd ) ) {
 330                         ch_free( li->li_idassert_passwd.bv_val );
 331                         BER_BVZERO( &li->li_idassert_passwd );
 332                 }
 333                 if ( !BER_BVISNULL( &li->li_idassert_authzID ) ) {
 334                         ch_free( li->li_idassert_authzID.bv_val );
 335                         BER_BVZERO( &li->li_idassert_authzID );
 336                 }
 337                 if ( !BER_BVISNULL( &li->li_idassert_sasl_mech ) ) {
 338                         ch_free( li->li_idassert_sasl_mech.bv_val );
 339                         BER_BVZERO( &li->li_idassert_sasl_mech );
 340                 }
 341                 if ( !BER_BVISNULL( &li->li_idassert_sasl_realm ) ) {
 342                         ch_free( li->li_idassert_sasl_realm.bv_val );
 343                         BER_BVZERO( &li->li_idassert_sasl_realm );
 344                 }
 345                 if ( li->li_idassert_authz != NULL ) {
 346                         ber_bvarray_free( li->li_idassert_authz );
 347                         li->li_idassert_authz = NULL;
 348                 }
 349                 if ( li->li_conninfo.lai_tree ) {
 350                         avl_free( li->li_conninfo.lai_tree, ldap_back_conn_free );
 351                 }
 352                 for ( i = LDAP_BACK_PCONN_FIRST; i < LDAP_BACK_PCONN_LAST; i++ ) {
 353                         while ( !LDAP_TAILQ_EMPTY( &li->li_conn_priv[ i ].lic_priv ) ) {
 354                                 ldapconn_t      *lc = LDAP_TAILQ_FIRST( &li->li_conn_priv[ i ].lic_priv );
 355
 356                                 LDAP_TAILQ_REMOVE( &li->li_conn_priv[ i ].lic_priv, lc, lc_q );
 357                                 ldap_back_conn_free( lc );
 358                         }
 359                 }
 360                 if ( LDAP_BACK_QUARANTINE( li ) ) {
 361                         slap_retry_info_destroy( &li->li_quarantine );
 362                         ldap_pvt_thread_mutex_destroy( &li->li_quarantine_mutex );
 363                 }
 364
 365                 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
 366                 ldap_pvt_thread_mutex_destroy( &li->li_conninfo.lai_mutex );
 367                 ldap_pvt_thread_mutex_destroy( &li->li_uri_mutex );
 368         }
 369
 370         ch_free( be->be_private );
 371
 372         return 0;
 373 }
 374
 375 #if SLAPD_LDAP == SLAPD_MOD_DYNAMIC
 376
 377 /* conditionally define the init_module() function */
 378 SLAP_BACKEND_INIT_MODULE( ldap )
 379
 380 #endif /* SLAPD_LDAP == SLAPD_MOD_DYNAMIC */
 381