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