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         rc = pbind_initialize();
 108         if ( rc ) {
 109                 return rc;
 110         }
 111
 112 #ifdef SLAP_DISTPROC
 113         rc = distproc_initialize();
 114         if ( rc ) {
 115                 return rc;
 116         }
 117 #endif
 118
 119         return ldap_back_init_cf( bi );
 120 }
 121
 122 int
 123 ldap_back_db_init( Backend *be, ConfigReply *cr )
 124 {
 125         ldapinfo_t      *li;
 126         int             rc;
 127         unsigned        i;
 128
 129         li = (ldapinfo_t *)ch_calloc( 1, sizeof( ldapinfo_t ) );
 130         if ( li == NULL ) {
 131                 return -1;
 132         }
 133
 134         li->li_rebind_f = ldap_back_default_rebind;
 135         li->li_urllist_f = ldap_back_default_urllist;
 136         li->li_urllist_p = li;
 137         ldap_pvt_thread_mutex_init( &li->li_uri_mutex );
 138
 139         BER_BVZERO( &li->li_acl_authcID );
 140         BER_BVZERO( &li->li_acl_authcDN );
 141         BER_BVZERO( &li->li_acl_passwd );
 142
 143         li->li_acl_authmethod = LDAP_AUTH_NONE;
 144         BER_BVZERO( &li->li_acl_sasl_mech );
 145         li->li_acl.sb_tls = SB_TLS_DEFAULT;
 146
 147         li->li_idassert_mode = LDAP_BACK_IDASSERT_LEGACY;
 148
 149         BER_BVZERO( &li->li_idassert_authcID );
 150         BER_BVZERO( &li->li_idassert_authcDN );
 151         BER_BVZERO( &li->li_idassert_passwd );
 152
 153         BER_BVZERO( &li->li_idassert_authzID );
 154
 155         li->li_idassert_authmethod = LDAP_AUTH_NONE;
 156         BER_BVZERO( &li->li_idassert_sasl_mech );
 157         li->li_idassert_tls = SB_TLS_DEFAULT;
 158
 159         /* by default, use proxyAuthz control on each operation */
 160         li->li_idassert_flags = LDAP_BACK_AUTH_PRESCRIPTIVE;
 161
 162         li->li_idassert_authz = NULL;
 163
 164         /* initialize flags */
 165         li->li_flags = LDAP_BACK_F_CHASE_REFERRALS;
 166
 167         /* initialize version */
 168         li->li_version = LDAP_VERSION3;
 169
 170         ldap_pvt_thread_mutex_init( &li->li_conninfo.lai_mutex );
 171
 172         for ( i = LDAP_BACK_PCONN_FIRST; i < LDAP_BACK_PCONN_LAST; i++ ) {
 173                 li->li_conn_priv[ i ].lic_num = 0;
 174                 LDAP_TAILQ_INIT( &li->li_conn_priv[ i ].lic_priv );
 175         }
 176         li->li_conn_priv_max = LDAP_BACK_CONN_PRIV_DEFAULT;
 177
 178         be->be_private = li;
 179         SLAP_DBFLAGS( be ) |= SLAP_DBFLAG_NOLASTMOD;
 180
 181         be->be_cf_ocs = be->bd_info->bi_cf_ocs;
 182
 183         rc = ldap_back_monitor_db_init( be );
 184         if ( rc != 0 ) {
 185                 /* ignore, by now */
 186                 rc = 0;
 187         }
 188
 189         return rc;
 190 }
 191
 192 int
 193 ldap_back_db_open( BackendDB *be, ConfigReply *cr )
 194 {
 195         ldapinfo_t      *li = (ldapinfo_t *)be->be_private;
 196
 197         slap_bindconf   sb = { BER_BVNULL };
 198         int             rc = 0;
 199
 200         Debug( LDAP_DEBUG_TRACE,
 201                 "ldap_back_db_open: URI=%s\n",
 202                 li->li_uri != NULL ? li->li_uri : "", 0, 0 );
 203
 204         /* by default, use proxyAuthz control on each operation */
 205         switch ( li->li_idassert_mode ) {
 206         case LDAP_BACK_IDASSERT_LEGACY:
 207         case LDAP_BACK_IDASSERT_SELF:
 208                 /* however, since admin connections are pooled and shared,
 209                  * only static authzIDs can be native */
 210                 li->li_idassert_flags &= ~LDAP_BACK_AUTH_NATIVE_AUTHZ;
 211                 break;
 212
 213         default:
 214                 break;
 215         }
 216
 217         ber_str2bv( li->li_uri, 0, 0, &sb.sb_uri );
 218         sb.sb_version = li->li_version;
 219         sb.sb_method = LDAP_AUTH_SIMPLE;
 220         BER_BVSTR( &sb.sb_binddn, "" );
 221
 222         if ( LDAP_BACK_T_F_DISCOVER( li ) && !LDAP_BACK_T_F( li ) ) {
 223                 rc = slap_discover_feature( &sb,
 224                                 slap_schema.si_ad_supportedFeatures->ad_cname.bv_val,
 225                                 LDAP_FEATURE_ABSOLUTE_FILTERS );
 226                 if ( rc == LDAP_COMPARE_TRUE ) {
 227                         li->li_flags |= LDAP_BACK_F_T_F;
 228                 }
 229         }
 230
 231         if ( LDAP_BACK_CANCEL_DISCOVER( li ) && !LDAP_BACK_CANCEL( li ) ) {
 232                 rc = slap_discover_feature( &sb,
 233                                 slap_schema.si_ad_supportedExtension->ad_cname.bv_val,
 234                                 LDAP_EXOP_CANCEL );
 235                 if ( rc == LDAP_COMPARE_TRUE ) {
 236                         li->li_flags |= LDAP_BACK_F_CANCEL_EXOP;
 237                 }
 238         }
 239
 240         /* monitor setup */
 241         rc = ldap_back_monitor_db_open( be );
 242         if ( rc != 0 ) {
 243                 /* ignore by now */
 244                 rc = 0;
 245         }
 246
 247         li->li_flags |= LDAP_BACK_F_ISOPEN;
 248
 249         return rc;
 250 }
 251
 252 void
 253 ldap_back_conn_free( void *v_lc )
 254 {
 255         ldapconn_t      *lc = v_lc;
 256
 257         if ( lc->lc_ld != NULL ) {
 258                 ldap_unbind_ext( lc->lc_ld, NULL, NULL );
 259         }
 260         if ( !BER_BVISNULL( &lc->lc_bound_ndn ) ) {
 261                 ch_free( lc->lc_bound_ndn.bv_val );
 262         }
 263         if ( !BER_BVISNULL( &lc->lc_cred ) ) {
 264                 memset( lc->lc_cred.bv_val, 0, lc->lc_cred.bv_len );
 265                 ch_free( lc->lc_cred.bv_val );
 266         }
 267         if ( !BER_BVISNULL( &lc->lc_local_ndn ) ) {
 268                 ch_free( lc->lc_local_ndn.bv_val );
 269         }
 270         lc->lc_q.tqe_prev = NULL;
 271         lc->lc_q.tqe_next = NULL;
 272         ch_free( lc );
 273 }
 274
 275 int
 276 ldap_back_db_close( Backend *be, ConfigReply *cr )
 277 {
 278         int             rc = 0;
 279
 280         if ( be->be_private ) {
 281                 rc = ldap_back_monitor_db_close( be );
 282         }
 283
 284         return rc;
 285 }
 286
 287 int
 288 ldap_back_db_destroy( Backend *be, ConfigReply *cr )
 289 {
 290         if ( be->be_private ) {
 291                 ldapinfo_t      *li = ( ldapinfo_t * )be->be_private;
 292                 unsigned        i;
 293
 294                 (void)ldap_back_monitor_db_destroy( be );
 295
 296                 ldap_pvt_thread_mutex_lock( &li->li_conninfo.lai_mutex );
 297
 298                 if ( li->li_uri != NULL ) {
 299                         ch_free( li->li_uri );
 300                         li->li_uri = NULL;
 301
 302                         assert( li->li_bvuri != NULL );
 303                         ber_bvarray_free( li->li_bvuri );
 304                         li->li_bvuri = NULL;
 305                 }
 306
 307                 bindconf_free( &li->li_tls );
 308                 bindconf_free( &li->li_acl );
 309                 bindconf_free( &li->li_idassert.si_bc );
 310
 311                 if ( li->li_idassert_authz != NULL ) {
 312                         ber_bvarray_free( li->li_idassert_authz );
 313                         li->li_idassert_authz = NULL;
 314                 }
 315                 if ( li->li_conninfo.lai_tree ) {
 316                         avl_free( li->li_conninfo.lai_tree, ldap_back_conn_free );
 317                 }
 318                 for ( i = LDAP_BACK_PCONN_FIRST; i < LDAP_BACK_PCONN_LAST; i++ ) {
 319                         while ( !LDAP_TAILQ_EMPTY( &li->li_conn_priv[ i ].lic_priv ) ) {
 320                                 ldapconn_t      *lc = LDAP_TAILQ_FIRST( &li->li_conn_priv[ i ].lic_priv );
 321
 322                                 LDAP_TAILQ_REMOVE( &li->li_conn_priv[ i ].lic_priv, lc, lc_q );
 323                                 ldap_back_conn_free( lc );
 324                         }
 325                 }
 326                 if ( LDAP_BACK_QUARANTINE( li ) ) {
 327                         slap_retry_info_destroy( &li->li_quarantine );
 328                         ldap_pvt_thread_mutex_destroy( &li->li_quarantine_mutex );
 329                 }
 330
 331                 ldap_pvt_thread_mutex_unlock( &li->li_conninfo.lai_mutex );
 332                 ldap_pvt_thread_mutex_destroy( &li->li_conninfo.lai_mutex );
 333                 ldap_pvt_thread_mutex_destroy( &li->li_uri_mutex );
 334         }
 335
 336         ch_free( be->be_private );
 337
 338         return 0;
 339 }
 340
 341 #if SLAPD_LDAP == SLAPD_MOD_DYNAMIC
 342
 343 /* conditionally define the init_module() function */
 344 SLAP_BACKEND_INIT_MODULE( ldap )
 345
 346 #endif /* SLAPD_LDAP == SLAPD_MOD_DYNAMIC */
 347