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 2003-2018 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,
  39         slap_idassert_passthru_parse_cf,
  40         slap_idassert_parse,
  41         slap_retry_info_destroy,
  42         slap_retry_info_parse,
  43         slap_retry_info_unparse,
  44         ldap_back_connid2str
  45 };
  46
  47 int
  48 ldap_back_open( BackendInfo     *bi )
  49 {
  50         bi->bi_controls = slap_known_controls;
  51         return 0;
  52 }
  53
  54 int
  55 ldap_back_initialize( BackendInfo *bi )
  56 {
  57         int             rc;
  58
  59         bi->bi_flags =
  60 #ifdef LDAP_DYNAMIC_OBJECTS
  61                 /* this is set because all the support a proxy has to provide
  62                  * is the capability to forward the refresh exop, and to
  63                  * pass thru entries that contain the dynamicObject class
  64                  * and the entryTtl attribute */
  65                 SLAP_BFLAG_DYNAMIC |
  66 #endif /* LDAP_DYNAMIC_OBJECTS */
  67
  68                 /* back-ldap recognizes RFC4525 increment;
  69                  * let the remote server complain, if needed (ITS#5912) */
  70                 SLAP_BFLAG_INCREMENT;
  71
  72         bi->bi_open = ldap_back_open;
  73         bi->bi_config = 0;
  74         bi->bi_close = 0;
  75         bi->bi_destroy = 0;
  76
  77         bi->bi_db_init = ldap_back_db_init;
  78         bi->bi_db_config = config_generic_wrapper;
  79         bi->bi_db_open = ldap_back_db_open;
  80         bi->bi_db_close = ldap_back_db_close;
  81         bi->bi_db_destroy = ldap_back_db_destroy;
  82
  83         bi->bi_op_bind = ldap_back_bind;
  84         bi->bi_op_unbind = 0;
  85         bi->bi_op_search = ldap_back_search;
  86         bi->bi_op_compare = ldap_back_compare;
  87         bi->bi_op_modify = ldap_back_modify;
  88         bi->bi_op_modrdn = ldap_back_modrdn;
  89         bi->bi_op_add = ldap_back_add;
  90         bi->bi_op_delete = ldap_back_delete;
  91         bi->bi_op_abandon = 0;
  92
  93         bi->bi_extended = ldap_back_extended;
  94
  95         bi->bi_chk_referrals = 0;
  96         bi->bi_entry_get_rw = ldap_back_entry_get;
  97
  98         bi->bi_connection_init = 0;
  99         bi->bi_connection_destroy = ldap_back_conn_destroy;
 100
 101         bi->bi_extra = (void *)&ldap_extra;
 102
 103         rc =  ldap_back_init_cf( bi );
 104         if ( rc ) {
 105                 return rc;
 106         }
 107
 108         rc = chain_initialize();
 109         if ( rc ) {
 110                 return rc;
 111         }
 112
 113         rc = pbind_initialize();
 114         if ( rc ) {
 115                 return rc;
 116         }
 117
 118 #ifdef SLAP_DISTPROC
 119         rc = distproc_initialize();
 120         if ( rc ) {
 121                 return rc;
 122         }
 123 #endif
 124         return rc;
 125 }
 126
 127 int
 128 ldap_back_db_init( Backend *be, ConfigReply *cr )
 129 {
 130         ldapinfo_t      *li;
 131         int             rc;
 132         unsigned        i;
 133
 134         li = (ldapinfo_t *)ch_calloc( 1, sizeof( ldapinfo_t ) );
 135         if ( li == NULL ) {
 136                 return -1;
 137         }
 138
 139         li->li_rebind_f = ldap_back_default_rebind;
 140         li->li_urllist_f = ldap_back_default_urllist;
 141         li->li_urllist_p = li;
 142         ldap_pvt_thread_mutex_init( &li->li_uri_mutex );
 143
 144         BER_BVZERO( &li->li_acl_authcID );
 145         BER_BVZERO( &li->li_acl_authcDN );
 146         BER_BVZERO( &li->li_acl_passwd );
 147
 148         li->li_acl_authmethod = LDAP_AUTH_NONE;
 149         BER_BVZERO( &li->li_acl_sasl_mech );
 150         li->li_acl.sb_tls = SB_TLS_DEFAULT;
 151
 152         li->li_idassert_mode = LDAP_BACK_IDASSERT_LEGACY;
 153
 154         BER_BVZERO( &li->li_idassert_authcID );
 155         BER_BVZERO( &li->li_idassert_authcDN );
 156         BER_BVZERO( &li->li_idassert_passwd );
 157
 158         BER_BVZERO( &li->li_idassert_authzID );
 159
 160         li->li_idassert_authmethod = LDAP_AUTH_NONE;
 161         BER_BVZERO( &li->li_idassert_sasl_mech );
 162         li->li_idassert_tls = SB_TLS_DEFAULT;
 163
 164         /* by default, use proxyAuthz control on each operation */
 165         li->li_idassert_flags = LDAP_BACK_AUTH_PRESCRIPTIVE;
 166
 167         li->li_idassert_authz = NULL;
 168
 169         /* initialize flags */
 170         li->li_flags = LDAP_BACK_F_CHASE_REFERRALS;
 171
 172         /* initialize version */
 173         li->li_version = LDAP_VERSION3;
 174
 175         ldap_pvt_thread_mutex_init( &li->li_conninfo.lai_mutex );
 176
 177         for ( i = LDAP_BACK_PCONN_FIRST; i < LDAP_BACK_PCONN_LAST; i++ ) {
 178                 li->li_conn_priv[ i ].lic_num = 0;
 179                 LDAP_TAILQ_INIT( &li->li_conn_priv[ i ].lic_priv );
 180         }
 181         li->li_conn_priv_max = LDAP_BACK_CONN_PRIV_DEFAULT;
 182
 183         ldap_pvt_thread_mutex_init( &li->li_counter_mutex );
 184         for ( i = 0; i < SLAP_OP_LAST; i++ ) {
 185                 ldap_pvt_mp_init( li->li_ops_completed[ i ] );
 186         }
 187
 188         be->be_private = li;
 189         SLAP_DBFLAGS( be ) |= SLAP_DBFLAG_NOLASTMOD;
 190
 191         be->be_cf_ocs = be->bd_info->bi_cf_ocs;
 192
 193         rc = ldap_back_monitor_db_init( be );
 194         if ( rc != 0 ) {
 195                 /* ignore, by now */
 196                 rc = 0;
 197         }
 198
 199         return rc;
 200 }
 201
 202 int
 203 ldap_back_db_open( BackendDB *be, ConfigReply *cr )
 204 {
 205         ldapinfo_t      *li = (ldapinfo_t *)be->be_private;
 206
 207         slap_bindconf   sb = { BER_BVNULL };
 208         int             rc = 0;
 209
 210         Debug( LDAP_DEBUG_TRACE,
 211                 "ldap_back_db_open: URI=%s\n",
 212                 li->li_uri != NULL ? li->li_uri : "", 0, 0 );
 213
 214         /* by default, use proxyAuthz control on each operation */
 215         switch ( li->li_idassert_mode ) {
 216         case LDAP_BACK_IDASSERT_LEGACY:
 217         case LDAP_BACK_IDASSERT_SELF:
 218                 /* however, since admin connections are pooled and shared,
 219                  * only static authzIDs can be native */
 220                 li->li_idassert_flags &= ~LDAP_BACK_AUTH_NATIVE_AUTHZ;
 221                 break;
 222
 223         default:
 224                 break;
 225         }
 226
 227         ber_str2bv( li->li_uri, 0, 0, &sb.sb_uri );
 228         sb.sb_version = li->li_version;
 229         sb.sb_method = LDAP_AUTH_SIMPLE;
 230         BER_BVSTR( &sb.sb_binddn, "" );
 231
 232         if ( LDAP_BACK_T_F_DISCOVER( li ) && !LDAP_BACK_T_F( li ) ) {
 233                 rc = slap_discover_feature( &sb,
 234                                 slap_schema.si_ad_supportedFeatures->ad_cname.bv_val,
 235                                 LDAP_FEATURE_ABSOLUTE_FILTERS );
 236                 if ( rc == LDAP_COMPARE_TRUE ) {
 237                         li->li_flags |= LDAP_BACK_F_T_F;
 238                 }
 239         }
 240
 241         if ( LDAP_BACK_CANCEL_DISCOVER( li ) && !LDAP_BACK_CANCEL( li ) ) {
 242                 rc = slap_discover_feature( &sb,
 243                                 slap_schema.si_ad_supportedExtension->ad_cname.bv_val,
 244                                 LDAP_EXOP_CANCEL );
 245                 if ( rc == LDAP_COMPARE_TRUE ) {
 246                         li->li_flags |= LDAP_BACK_F_CANCEL_EXOP;
 247                 }
 248         }
 249
 250         /* monitor setup */
 251         rc = ldap_back_monitor_db_open( be );
 252         if ( rc != 0 ) {
 253                 /* ignore by now */
 254                 rc = 0;
 255         }
 256
 257         li->li_flags |= LDAP_BACK_F_ISOPEN;
 258
 259         return rc;
 260 }
 261
 262 void
 263 ldap_back_conn_free( void *v_lc )
 264 {
 265         ldapconn_t      *lc = v_lc;
 266
 267         if ( lc->lc_ld != NULL ) {
 268                 ldap_unbind_ext( lc->lc_ld, NULL, NULL );
 269         }
 270         if ( !BER_BVISNULL( &lc->lc_bound_ndn ) ) {
 271                 ch_free( lc->lc_bound_ndn.bv_val );
 272         }
 273         if ( !BER_BVISNULL( &lc->lc_cred ) ) {
 274                 memset( lc->lc_cred.bv_val, 0, lc->lc_cred.bv_len );
 275                 ch_free( lc->lc_cred.bv_val );
 276         }
 277         if ( !BER_BVISNULL( &lc->lc_local_ndn ) ) {
 278                 ch_free( lc->lc_local_ndn.bv_val );
 279         }
 280         lc->lc_q.tqe_prev = NULL;
 281         lc->lc_q.tqe_next = NULL;
 282         ch_free( lc );
 283 }
 284
 285 int
 286 ldap_back_db_close( Backend *be, ConfigReply *cr )
 287 {
 288         int             rc = 0;
 289
 290         if ( be->be_private ) {
 291                 rc = ldap_back_monitor_db_close( be );
 292         }
 293
 294         return rc;
 295 }
 296
 297 int
 298 ldap_back_db_destroy( Backend *be, ConfigReply *cr )
 299 {
 300         if ( be->be_private ) {
 301                 ldapinfo_t      *li = ( ldapinfo_t * )be->be_private;
 302                 unsigned        i;
 303
 304                 (void)ldap_back_monitor_db_destroy( be );
 305
 306                 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
 307
 308                 if ( li->li_uri != NULL ) {
 309                         ch_free( li->li_uri );
 310                         li->li_uri = NULL;
 311
 312                         assert( li->li_bvuri != NULL );
 313                         ber_bvarray_free( li->li_bvuri );
 314                         li->li_bvuri = NULL;
 315                 }
 316
 317                 bindconf_free( &li->li_tls );
 318                 bindconf_free( &li->li_acl );
 319                 bindconf_free( &li->li_idassert.si_bc );
 320
 321                 if ( li->li_idassert_authz != NULL ) {
 322                         ber_bvarray_free( li->li_idassert_authz );
 323                         li->li_idassert_authz = NULL;
 324                 }
 325                 if ( li->li_conninfo.lai_tree ) {
 326                         avl_free( li->li_conninfo.lai_tree, ldap_back_conn_free );
 327                 }
 328                 for ( i = LDAP_BACK_PCONN_FIRST; i < LDAP_BACK_PCONN_LAST; i++ ) {
 329                         while ( !LDAP_TAILQ_EMPTY( &li->li_conn_priv[ i ].lic_priv ) ) {
 330                                 ldapconn_t      *lc = LDAP_TAILQ_FIRST( &li->li_conn_priv[ i ].lic_priv );
 331
 332                                 LDAP_TAILQ_REMOVE( &li->li_conn_priv[ i ].lic_priv, lc, lc_q );
 333                                 ldap_back_conn_free( lc );
 334                         }
 335                 }
 336                 if ( LDAP_BACK_QUARANTINE( li ) ) {
 337                         slap_retry_info_destroy( &li->li_quarantine );
 338                         ldap_pvt_thread_mutex_destroy( &li->li_quarantine_mutex );
 339                 }
 340
 341                 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
 342                 ldap_pvt_thread_mutex_destroy( &li->li_conninfo.lai_mutex );
 343                 ldap_pvt_thread_mutex_destroy( &li->li_uri_mutex );
 344
 345                 for ( i = 0; i < SLAP_OP_LAST; i++ ) {
 346                         ldap_pvt_mp_clear( li->li_ops_completed[ i ] );
 347                 }
 348                 ldap_pvt_thread_mutex_destroy( &li->li_counter_mutex );
 349         }
 350
 351         ch_free( be->be_private );
 352
 353         return 0;
 354 }
 355
 356 #if SLAPD_LDAP == SLAPD_MOD_DYNAMIC
 357
 358 /* conditionally define the init_module() function */
 359 SLAP_BACKEND_INIT_MODULE( ldap )
 360
 361 #endif /* SLAPD_LDAP == SLAPD_MOD_DYNAMIC */
 362