git.sur5r.net Git - openldap/blob - servers/slapd/overlays/dds.c

   1 /* $OpenLDAP$ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 2005-2017 The OpenLDAP Foundation.
   5  * Portions Copyright 2005-2006 SysNet s.n.c.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* ACKNOWLEDGEMENTS:
  17  * This work was initially developed by Pierangelo Masarati for inclusion
  18  * in OpenLDAP Software, sponsored by SysNet s.n.c.
  19  */
  20
  21 #include "portable.h"
  22
  23 #ifdef SLAPD_OVER_DDS
  24
  25 #include <stdio.h>
  26
  27 #include <ac/string.h>
  28 #include <ac/time.h>
  29
  30 #include "slap.h"
  31 #include "lutil.h"
  32 #include "ldap_rq.h"
  33
  34 #include "config.h"
  35
  36 #define DDS_RF2589_MAX_TTL              (31557600)      /* 1 year + 6 hours */
  37 #define DDS_RF2589_DEFAULT_TTL          (86400)         /* 1 day */
  38 #define DDS_DEFAULT_INTERVAL            (3600)          /* 1 hour */
  39
  40 typedef struct dds_info_t {
  41         unsigned                di_flags;
  42 #define DDS_FOFF                (0x1U)          /* is this really needed? */
  43 #define DDS_SET(di, f)          ( (di)->di_flags & (f) )
  44
  45 #define DDS_OFF(di)             DDS_SET( (di), DDS_FOFF )
  46
  47         time_t                  di_max_ttl;
  48         time_t                  di_min_ttl;
  49         time_t                  di_default_ttl;
  50 #define DDS_DEFAULT_TTL(di)     \
  51         ( (di)->di_default_ttl ? (di)->di_default_ttl : (di)->di_max_ttl )
  52
  53         time_t                  di_tolerance;
  54
  55         /* expire check interval and task */
  56         time_t                  di_interval;
  57 #define DDS_INTERVAL(di)        \
  58         ( (di)->di_interval ? (di)->di_interval : DDS_DEFAULT_INTERVAL )
  59         struct re_s             *di_expire_task;
  60
  61         /* allows to limit the maximum number of dynamic objects */
  62         ldap_pvt_thread_mutex_t di_mutex;
  63         int                     di_num_dynamicObjects;
  64         int                     di_max_dynamicObjects;
  65
  66         /* used to advertize the dynamicSubtrees in the root DSE,
  67          * and to select the database in the expiration task */
  68         BerVarray               di_suffix;
  69         BerVarray               di_nsuffix;
  70 } dds_info_t;
  71
  72 static struct berval slap_EXOP_REFRESH = BER_BVC( LDAP_EXOP_REFRESH );
  73 static AttributeDescription     *ad_entryExpireTimestamp;
  74
  75 /* list of expired DNs */
  76 typedef struct dds_expire_t {
  77         struct berval           de_ndn;
  78         struct dds_expire_t     *de_next;
  79 } dds_expire_t;
  80
  81 typedef struct dds_cb_t {
  82         dds_expire_t    *dc_ndnlist;
  83 } dds_cb_t;
  84
  85 static int
  86 dds_expire_cb( Operation *op, SlapReply *rs )
  87 {
  88         dds_cb_t        *dc = (dds_cb_t *)op->o_callback->sc_private;
  89         dds_expire_t    *de;
  90         int             rc;
  91
  92         switch ( rs->sr_type ) {
  93         case REP_SEARCH:
  94                 /* alloc list and buffer for berval all in one */
  95                 de = op->o_tmpalloc( sizeof( dds_expire_t ) + rs->sr_entry->e_nname.bv_len + 1,
  96                         op->o_tmpmemctx );
  97
  98                 de->de_next = dc->dc_ndnlist;
  99                 dc->dc_ndnlist = de;
 100
 101                 de->de_ndn.bv_len = rs->sr_entry->e_nname.bv_len;
 102                 de->de_ndn.bv_val = (char *)&de[ 1 ];
 103                 AC_MEMCPY( de->de_ndn.bv_val, rs->sr_entry->e_nname.bv_val,
 104                         rs->sr_entry->e_nname.bv_len + 1 );
 105                 rc = 0;
 106                 break;
 107
 108         case REP_SEARCHREF:
 109         case REP_RESULT:
 110                 rc = rs->sr_err;
 111                 break;
 112
 113         default:
 114                 assert( 0 );
 115         }
 116
 117         return rc;
 118 }
 119
 120 static int
 121 dds_expire( void *ctx, dds_info_t *di )
 122 {
 123         Connection      conn = { 0 };
 124         OperationBuffer opbuf;
 125         Operation       *op;
 126         slap_callback   sc = { 0 };
 127         dds_cb_t        dc = { 0 };
 128         dds_expire_t    *de = NULL, **dep;
 129         SlapReply       rs = { REP_RESULT };
 130
 131         time_t          expire;
 132         char            tsbuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
 133         struct berval   ts;
 134
 135         int             ndeletes, ntotdeletes;
 136
 137         int             rc;
 138         char            *extra = "";
 139
 140         connection_fake_init2( &conn, &opbuf, ctx, 0 );
 141         op = &opbuf.ob_op;
 142
 143         op->o_tag = LDAP_REQ_SEARCH;
 144         memset( &op->oq_search, 0, sizeof( op->oq_search ) );
 145
 146         op->o_bd = select_backend( &di->di_nsuffix[ 0 ], 0 );
 147
 148         op->o_req_dn = op->o_bd->be_suffix[ 0 ];
 149         op->o_req_ndn = op->o_bd->be_nsuffix[ 0 ];
 150
 151         op->o_dn = op->o_bd->be_rootdn;
 152         op->o_ndn = op->o_bd->be_rootndn;
 153
 154         op->ors_scope = LDAP_SCOPE_SUBTREE;
 155         op->ors_tlimit = DDS_INTERVAL( di )/2 + 1;
 156         op->ors_slimit = SLAP_NO_LIMIT;
 157         op->ors_attrs = slap_anlist_no_attrs;
 158
 159         expire = slap_get_time() - di->di_tolerance;
 160         ts.bv_val = tsbuf;
 161         ts.bv_len = sizeof( tsbuf );
 162         slap_timestamp( &expire, &ts );
 163
 164         op->ors_filterstr.bv_len = STRLENOF( "(&(objectClass=" ")(" "<=" "))" )
 165                 + slap_schema.si_oc_dynamicObject->soc_cname.bv_len
 166                 + ad_entryExpireTimestamp->ad_cname.bv_len
 167                 + ts.bv_len;
 168         op->ors_filterstr.bv_val = op->o_tmpalloc( op->ors_filterstr.bv_len + 1, op->o_tmpmemctx );
 169         snprintf( op->ors_filterstr.bv_val, op->ors_filterstr.bv_len + 1,
 170                 "(&(objectClass=%s)(%s<=%s))",
 171                 slap_schema.si_oc_dynamicObject->soc_cname.bv_val,
 172                 ad_entryExpireTimestamp->ad_cname.bv_val, ts.bv_val );
 173
 174         op->ors_filter = str2filter_x( op, op->ors_filterstr.bv_val );
 175         if ( op->ors_filter == NULL ) {
 176                 rs.sr_err = LDAP_OTHER;
 177                 goto done_search;
 178         }
 179
 180         op->o_callback = &sc;
 181         sc.sc_response = dds_expire_cb;
 182         sc.sc_private = &dc;
 183
 184         (void)op->o_bd->bd_info->bi_op_search( op, &rs );
 185
 186 done_search:;
 187         op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
 188         filter_free_x( op, op->ors_filter, 1 );
 189
 190         rc = rs.sr_err;
 191         switch ( rs.sr_err ) {
 192         case LDAP_SUCCESS:
 193                 break;
 194
 195         case LDAP_NO_SUCH_OBJECT:
 196                 /* (ITS#5267) database not created yet? */
 197                 rs.sr_err = LDAP_SUCCESS;
 198                 extra = " (ignored)";
 199                 /* fallthru */
 200
 201         default:
 202                 Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
 203                         "DDS expired objects lookup failed err=%d%s\n",
 204                         rc, extra );
 205                 goto done;
 206         }
 207
 208         op->o_tag = LDAP_REQ_DELETE;
 209         op->o_callback = &sc;
 210         sc.sc_response = slap_null_cb;
 211         sc.sc_private = NULL;
 212
 213         for ( ntotdeletes = 0, ndeletes = 1; dc.dc_ndnlist != NULL  && ndeletes > 0; ) {
 214                 ndeletes = 0;
 215
 216                 for ( dep = &dc.dc_ndnlist; *dep != NULL; ) {
 217                         de = *dep;
 218
 219                         op->o_req_dn = de->de_ndn;
 220                         op->o_req_ndn = de->de_ndn;
 221                         (void)op->o_bd->bd_info->bi_op_delete( op, &rs );
 222                         switch ( rs.sr_err ) {
 223                         case LDAP_SUCCESS:
 224                                 Log1( LDAP_DEBUG_STATS, LDAP_LEVEL_INFO,
 225                                         "DDS dn=\"%s\" expired.\n",
 226                                         de->de_ndn.bv_val );
 227                                 ndeletes++;
 228                                 break;
 229
 230                         case LDAP_NOT_ALLOWED_ON_NONLEAF:
 231                                 Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_NOTICE,
 232                                         "DDS dn=\"%s\" is non-leaf; "
 233                                         "deferring.\n",
 234                                         de->de_ndn.bv_val );
 235                                 dep = &de->de_next;
 236                                 de = NULL;
 237                                 break;
 238
 239                         default:
 240                                 Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_NOTICE,
 241                                         "DDS dn=\"%s\" err=%d; "
 242                                         "deferring.\n",
 243                                         de->de_ndn.bv_val, rs.sr_err );
 244                                 break;
 245                         }
 246
 247                         if ( de != NULL ) {
 248                                 *dep = de->de_next;
 249                                 op->o_tmpfree( de, op->o_tmpmemctx );
 250                         }
 251                 }
 252
 253                 ntotdeletes += ndeletes;
 254         }
 255
 256         rs.sr_err = LDAP_SUCCESS;
 257
 258         Log1( LDAP_DEBUG_STATS, LDAP_LEVEL_INFO,
 259                 "DDS expired=%d\n", ntotdeletes );
 260
 261 done:;
 262         return rs.sr_err;
 263 }
 264
 265 static void *
 266 dds_expire_fn( void *ctx, void *arg )
 267 {
 268         struct re_s     *rtask = arg;
 269         dds_info_t      *di = rtask->arg;
 270
 271         assert( di->di_expire_task == rtask );
 272
 273         (void)dds_expire( ctx, di );
 274
 275         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 276         if ( ldap_pvt_runqueue_isrunning( &slapd_rq, rtask )) {
 277                 ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
 278         }
 279         ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
 280         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 281
 282         return NULL;
 283 }
 284
 285 /* frees the callback */
 286 static int
 287 dds_freeit_cb( Operation *op, SlapReply *rs )
 288 {
 289         op->o_tmpfree( op->o_callback, op->o_tmpmemctx );
 290         op->o_callback = NULL;
 291
 292         return SLAP_CB_CONTINUE;
 293 }
 294
 295 /* updates counter - installed on add/delete only if required */
 296 static int
 297 dds_counter_cb( Operation *op, SlapReply *rs )
 298 {
 299         assert( rs->sr_type == REP_RESULT );
 300
 301         if ( rs->sr_err == LDAP_SUCCESS ) {
 302                 dds_info_t      *di = op->o_callback->sc_private;
 303
 304                 ldap_pvt_thread_mutex_lock( &di->di_mutex );
 305                 switch ( op->o_tag ) {
 306                 case LDAP_REQ_DELETE:
 307                         assert( di->di_num_dynamicObjects > 0 );
 308                         di->di_num_dynamicObjects--;
 309                         break;
 310
 311                 case LDAP_REQ_ADD:
 312                         assert( di->di_num_dynamicObjects < di->di_max_dynamicObjects );
 313                         di->di_num_dynamicObjects++;
 314                         break;
 315
 316                 default:
 317                         assert( 0 );
 318                 }
 319                 ldap_pvt_thread_mutex_unlock( &di->di_mutex );
 320         }
 321
 322         return dds_freeit_cb( op, rs );
 323 }
 324
 325 static int
 326 dds_op_add( Operation *op, SlapReply *rs )
 327 {
 328         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 329         dds_info_t      *di = on->on_bi.bi_private;
 330         int             is_dynamicObject;
 331
 332         if ( DDS_OFF( di ) ) {
 333                 return SLAP_CB_CONTINUE;
 334         }
 335
 336         is_dynamicObject = is_entry_dynamicObject( op->ora_e );
 337
 338         /* FIXME: do not allow this right now, pending clarification */
 339         if ( is_dynamicObject ) {
 340                 rs->sr_err = LDAP_SUCCESS;
 341
 342                 if ( is_entry_referral( op->ora_e ) ) {
 343                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 344                         rs->sr_text = "a referral cannot be a dynamicObject";
 345
 346                 } else if ( is_entry_alias( op->ora_e ) ) {
 347                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 348                         rs->sr_text = "an alias cannot be a dynamicObject";
 349                 }
 350
 351                 if ( rs->sr_err != LDAP_SUCCESS ) {
 352                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 353                         send_ldap_result( op, rs );
 354                         return rs->sr_err;
 355                 }
 356         }
 357
 358         /* we don't allow dynamicObjects to have static subordinates */
 359         if ( !dn_match( &op->o_req_ndn, &op->o_bd->be_nsuffix[ 0 ] ) ) {
 360                 struct berval   p_ndn;
 361                 Entry           *e = NULL;
 362                 int             rc;
 363                 BackendInfo     *bi = op->o_bd->bd_info;
 364
 365                 dnParent( &op->o_req_ndn, &p_ndn );
 366                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 367                 rc = be_entry_get_rw( op, &p_ndn,
 368                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
 369                 if ( rc == LDAP_SUCCESS && e != NULL ) {
 370                         if ( !is_dynamicObject ) {
 371                                 /* return referral only if "disclose"
 372                                  * is granted on the object */
 373                                 if ( ! access_allowed( op, e,
 374                                                 slap_schema.si_ad_entry,
 375                                                 NULL, ACL_DISCLOSE, NULL ) )
 376                                 {
 377                                         rc = rs->sr_err = LDAP_NO_SUCH_OBJECT;
 378                                         send_ldap_result( op, rs );
 379
 380                                 } else {
 381                                         rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 382                                         send_ldap_error( op, rs, rc, "no static subordinate entries allowed for dynamicObject" );
 383                                 }
 384                         }
 385
 386                         be_entry_release_r( op, e );
 387                         if ( rc != LDAP_SUCCESS ) {
 388                                 return rc;
 389                         }
 390                 }
 391                 op->o_bd->bd_info = bi;
 392         }
 393
 394         /* handle dynamic object operational attr(s) */
 395         if ( is_dynamicObject ) {
 396                 time_t          ttl, expire;
 397                 char            ttlbuf[STRLENOF("31557600") + 1];
 398                 char            tsbuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
 399                 struct berval   bv;
 400
 401                 if ( !be_isroot_dn( op->o_bd, &op->o_req_ndn ) ) {
 402                         ldap_pvt_thread_mutex_lock( &di->di_mutex );
 403                         rs->sr_err = ( di->di_max_dynamicObjects &&
 404                                 di->di_num_dynamicObjects >= di->di_max_dynamicObjects );
 405                         ldap_pvt_thread_mutex_unlock( &di->di_mutex );
 406                         if ( rs->sr_err ) {
 407                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 408                                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 409                                         "too many dynamicObjects in context" );
 410                                 return rs->sr_err;
 411                         }
 412                 }
 413
 414                 ttl = DDS_DEFAULT_TTL( di );
 415
 416                 /* assert because should be checked at configure */
 417                 assert( ttl <= DDS_RF2589_MAX_TTL );
 418
 419                 bv.bv_val = ttlbuf;
 420                 bv.bv_len = snprintf( ttlbuf, sizeof( ttlbuf ), "%ld", ttl );
 421                 assert( bv.bv_len < sizeof( ttlbuf ) );
 422
 423                 /* FIXME: apparently, values in op->ora_e are malloc'ed
 424                  * on the thread's slab; works fine by chance,
 425                  * only because the attribute doesn't exist yet. */
 426                 assert( attr_find( op->ora_e->e_attrs, slap_schema.si_ad_entryTtl ) == NULL );
 427                 attr_merge_one( op->ora_e, slap_schema.si_ad_entryTtl, &bv, &bv );
 428
 429                 expire = slap_get_time() + ttl;
 430                 bv.bv_val = tsbuf;
 431                 bv.bv_len = sizeof( tsbuf );
 432                 slap_timestamp( &expire, &bv );
 433                 assert( attr_find( op->ora_e->e_attrs, ad_entryExpireTimestamp ) == NULL );
 434                 attr_merge_one( op->ora_e, ad_entryExpireTimestamp, &bv, &bv );
 435
 436                 /* if required, install counter callback */
 437                 if ( di->di_max_dynamicObjects > 0) {
 438                         slap_callback   *sc;
 439
 440                         sc = op->o_tmpalloc( sizeof( slap_callback ), op->o_tmpmemctx );
 441                         sc->sc_cleanup = dds_freeit_cb;
 442                         sc->sc_response = dds_counter_cb;
 443                         sc->sc_private = di;
 444                         sc->sc_next = op->o_callback;
 445                         sc->sc_writewait = 0;
 446
 447                         op->o_callback = sc;
 448                 }
 449         }
 450
 451         return SLAP_CB_CONTINUE;
 452 }
 453
 454 static int
 455 dds_op_delete( Operation *op, SlapReply *rs )
 456 {
 457         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 458         dds_info_t      *di = on->on_bi.bi_private;
 459
 460         /* if required, install counter callback */
 461         if ( !DDS_OFF( di ) && di->di_max_dynamicObjects > 0 ) {
 462                 Entry           *e = NULL;
 463                 BackendInfo     *bi = op->o_bd->bd_info;
 464
 465                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 466                 rs->sr_err = be_entry_get_rw( op, &op->o_req_ndn,
 467                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
 468
 469                 /* FIXME: couldn't the entry be added before deletion? */
 470                 if ( rs->sr_err == LDAP_SUCCESS && e != NULL ) {
 471                         slap_callback   *sc;
 472
 473                         be_entry_release_r( op, e );
 474                         e = NULL;
 475
 476                         sc = op->o_tmpalloc( sizeof( slap_callback ), op->o_tmpmemctx );
 477                         sc->sc_cleanup = dds_freeit_cb;
 478                         sc->sc_response = dds_counter_cb;
 479                         sc->sc_private = di;
 480                         sc->sc_writewait = 0;
 481                         sc->sc_next = op->o_callback;
 482
 483                         op->o_callback = sc;
 484                 }
 485                 op->o_bd->bd_info = bi;
 486         }
 487
 488         return SLAP_CB_CONTINUE;
 489 }
 490
 491 static int
 492 dds_op_modify( Operation *op, SlapReply *rs )
 493 {
 494         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 495         dds_info_t      *di = (dds_info_t *)on->on_bi.bi_private;
 496         Modifications   *mod;
 497         Entry           *e = NULL;
 498         BackendInfo     *bi = op->o_bd->bd_info;
 499         int             was_dynamicObject = 0,
 500                         is_dynamicObject = 0;
 501         struct berval   bv_entryTtl = BER_BVNULL;
 502         time_t          entryTtl = 0;
 503         char            textbuf[ SLAP_TEXT_BUFLEN ];
 504
 505         if ( DDS_OFF( di ) ) {
 506                 return SLAP_CB_CONTINUE;
 507         }
 508
 509         /* bv_entryTtl stores the string representation of the entryTtl
 510          * across modifies for consistency checks of the final value;
 511          * the bv_val points to a static buffer; the bv_len is zero when
 512          * the attribute is deleted.
 513          * entryTtl stores the integer representation of the entryTtl;
 514          * its value is -1 when the attribute is deleted; it is 0 only
 515          * if no modifications of the entryTtl occurred, as an entryTtl
 516          * of 0 is invalid. */
 517         bv_entryTtl.bv_val = textbuf;
 518
 519         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 520         rs->sr_err = be_entry_get_rw( op, &op->o_req_ndn,
 521                 slap_schema.si_oc_dynamicObject, slap_schema.si_ad_entryTtl, 0, &e );
 522         if ( rs->sr_err == LDAP_SUCCESS && e != NULL ) {
 523                 Attribute       *a = attr_find( e->e_attrs, slap_schema.si_ad_entryTtl );
 524
 525                 /* the value of the entryTtl is saved for later checks */
 526                 if ( a != NULL ) {
 527                         unsigned long   ttl;
 528                         int             rc;
 529
 530                         bv_entryTtl.bv_len = a->a_nvals[ 0 ].bv_len;
 531                         AC_MEMCPY( bv_entryTtl.bv_val, a->a_nvals[ 0 ].bv_val, bv_entryTtl.bv_len );
 532                         bv_entryTtl.bv_val[ bv_entryTtl.bv_len ] = '\0';
 533                         rc = lutil_atoul( &ttl, bv_entryTtl.bv_val );
 534                         assert( rc == 0 );
 535                         entryTtl = (time_t)ttl;
 536                 }
 537
 538                 be_entry_release_r( op, e );
 539                 e = NULL;
 540                 was_dynamicObject = is_dynamicObject = 1;
 541         }
 542         op->o_bd->bd_info = bi;
 543
 544         rs->sr_err = LDAP_SUCCESS;
 545         for ( mod = op->orm_modlist; mod; mod = mod->sml_next ) {
 546                 if ( mod->sml_desc == slap_schema.si_ad_objectClass ) {
 547                         int             i;
 548                         ObjectClass     *oc;
 549
 550                         switch ( mod->sml_op ) {
 551                         case LDAP_MOD_DELETE:
 552                                 if ( mod->sml_values == NULL ) {
 553                                         is_dynamicObject = 0;
 554                                         break;
 555                                 }
 556
 557                                 for ( i = 0; !BER_BVISNULL( &mod->sml_values[ i ] ); i++ ) {
 558                                         oc = oc_bvfind( &mod->sml_values[ i ] );
 559                                         if ( oc == slap_schema.si_oc_dynamicObject ) {
 560                                                 is_dynamicObject = 0;
 561                                                 break;
 562                                         }
 563                                 }
 564
 565                                 break;
 566
 567                         case LDAP_MOD_REPLACE:
 568                                 if ( mod->sml_values == NULL ) {
 569                                         is_dynamicObject = 0;
 570                                         break;
 571                                 }
 572                                 /* fallthru */
 573
 574                         case LDAP_MOD_ADD:
 575                                 for ( i = 0; !BER_BVISNULL( &mod->sml_values[ i ] ); i++ ) {
 576                                         oc = oc_bvfind( &mod->sml_values[ i ] );
 577                                         if ( oc == slap_schema.si_oc_dynamicObject ) {
 578                                                 is_dynamicObject = 1;
 579                                                 break;
 580                                         }
 581                                 }
 582                                 break;
 583                         }
 584
 585                 } else if ( mod->sml_desc == slap_schema.si_ad_entryTtl ) {
 586                         unsigned long   uttl;
 587                         time_t          ttl;
 588                         int             rc;
 589
 590                         switch ( mod->sml_op ) {
 591                         case LDAP_MOD_DELETE:
 592                         case SLAP_MOD_SOFTDEL: /* FIXME? */
 593                                 if ( mod->sml_values != NULL ) {
 594                                         if ( BER_BVISEMPTY( &bv_entryTtl )
 595                                                 || !bvmatch( &bv_entryTtl, &mod->sml_values[ 0 ] ) )
 596                                         {
 597                                                 rs->sr_err = backend_attribute( op, NULL, &op->o_req_ndn,
 598                                                         slap_schema.si_ad_entry, NULL, ACL_DISCLOSE );
 599                                                 if ( rs->sr_err == LDAP_INSUFFICIENT_ACCESS ) {
 600                                                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 601
 602                                                 } else {
 603                                                         rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 604                                                 }
 605                                                 goto done;
 606                                         }
 607                                 }
 608                                 bv_entryTtl.bv_len = 0;
 609                                 entryTtl = -1;
 610                                 break;
 611
 612                         case LDAP_MOD_REPLACE:
 613                                 bv_entryTtl.bv_len = 0;
 614                                 entryTtl = -1;
 615                                 /* fallthru */
 616
 617                         case LDAP_MOD_ADD:
 618                         case SLAP_MOD_SOFTADD: /* FIXME? */
 619                         case SLAP_MOD_ADD_IF_NOT_PRESENT: /* FIXME? */
 620                                 assert( mod->sml_values != NULL );
 621                                 assert( BER_BVISNULL( &mod->sml_values[ 1 ] ) );
 622
 623                                 if ( !BER_BVISEMPTY( &bv_entryTtl ) ) {
 624                                         rs->sr_err = backend_attribute( op, NULL, &op->o_req_ndn,
 625                                                 slap_schema.si_ad_entry, NULL, ACL_DISCLOSE );
 626                                         if ( rs->sr_err == LDAP_INSUFFICIENT_ACCESS ) {
 627                                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
 628
 629                                         } else {
 630                                                 rs->sr_text = "attribute 'entryTtl' cannot have multiple values";
 631                                                 rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 632                                         }
 633                                         goto done;
 634                                 }
 635
 636                                 rc = lutil_atoul( &uttl, mod->sml_values[ 0 ].bv_val );
 637                                 ttl = (time_t)uttl;
 638                                 assert( rc == 0 );
 639                                 if ( ttl > DDS_RF2589_MAX_TTL ) {
 640                                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 641                                         rs->sr_text = "invalid time-to-live for dynamicObject";
 642                                         goto done;
 643                                 }
 644
 645                                 if ( ttl <= 0 || ttl > di->di_max_ttl ) {
 646                                         /* FIXME: I don't understand if this has to be an error,
 647                                          * or an indication that the requested Ttl has been
 648                                          * shortened to di->di_max_ttl >= 1 day */
 649                                         rs->sr_err = LDAP_SIZELIMIT_EXCEEDED;
 650                                         rs->sr_text = "time-to-live for dynamicObject exceeds administrative limit";
 651                                         goto done;
 652                                 }
 653
 654                                 entryTtl = ttl;
 655                                 bv_entryTtl.bv_len = mod->sml_values[ 0 ].bv_len;
 656                                 AC_MEMCPY( bv_entryTtl.bv_val, mod->sml_values[ 0 ].bv_val, bv_entryTtl.bv_len );
 657                                 bv_entryTtl.bv_val[ bv_entryTtl.bv_len ] = '\0';
 658                                 break;
 659
 660                         case LDAP_MOD_INCREMENT:
 661                                 if ( BER_BVISEMPTY( &bv_entryTtl ) ) {
 662                                         rs->sr_err = backend_attribute( op, NULL, &op->o_req_ndn,
 663                                                 slap_schema.si_ad_entry, NULL, ACL_DISCLOSE );
 664                                         if ( rs->sr_err == LDAP_INSUFFICIENT_ACCESS ) {
 665                                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
 666
 667                                         } else {
 668                                                 rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 669                                                 rs->sr_text = "modify/increment: entryTtl: no such attribute";
 670                                         }
 671                                         goto done;
 672                                 }
 673
 674                                 entryTtl++;
 675                                 if ( entryTtl > DDS_RF2589_MAX_TTL ) {
 676                                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 677                                         rs->sr_text = "invalid time-to-live for dynamicObject";
 678
 679                                 } else if ( entryTtl <= 0 || entryTtl > di->di_max_ttl ) {
 680                                         /* FIXME: I don't understand if this has to be an error,
 681                                          * or an indication that the requested Ttl has been
 682                                          * shortened to di->di_max_ttl >= 1 day */
 683                                         rs->sr_err = LDAP_SIZELIMIT_EXCEEDED;
 684                                         rs->sr_text = "time-to-live for dynamicObject exceeds administrative limit";
 685                                 }
 686
 687                                 if ( rs->sr_err != LDAP_SUCCESS ) {
 688                                         rc = backend_attribute( op, NULL, &op->o_req_ndn,
 689                                                 slap_schema.si_ad_entry, NULL, ACL_DISCLOSE );
 690                                         if ( rc == LDAP_INSUFFICIENT_ACCESS ) {
 691                                                 rs->sr_text = NULL;
 692                                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
 693
 694                                         }
 695                                         goto done;
 696                                 }
 697
 698                                 bv_entryTtl.bv_len = snprintf( textbuf, sizeof( textbuf ), "%ld", entryTtl );
 699                                 break;
 700
 701                         default:
 702                                 assert( 0 );
 703                                 break;
 704                         }
 705
 706                 } else if ( mod->sml_desc == ad_entryExpireTimestamp ) {
 707                         /* should have been trapped earlier */
 708                         assert( mod->sml_flags & SLAP_MOD_INTERNAL );
 709                 }
 710         }
 711
 712 done:;
 713         if ( rs->sr_err == LDAP_SUCCESS ) {
 714                 int     rc;
 715
 716                 /* FIXME: this could be allowed when the Relax control is used...
 717                  * in that case:
 718                  *
 719                  * TODO
 720                  *
 721                  *      static => dynamic:
 722                  *              entryTtl must be provided; add
 723                  *              entryExpireTimestamp accordingly
 724                  *
 725                  *      dynamic => static:
 726                  *              entryTtl must be removed; remove
 727                  *              entryTimestamp accordingly
 728                  *
 729                  * ... but we need to make sure that there are no subordinate
 730                  * issues...
 731                  */
 732                 rc = is_dynamicObject - was_dynamicObject;
 733                 if ( rc ) {
 734 #if 0 /* fix subordinate issues first */
 735                         if ( get_relax( op ) ) {
 736                                 switch ( rc ) {
 737                                 case -1:
 738                                         /* need to delete entryTtl to have a consistent entry */
 739                                         if ( entryTtl != -1 ) {
 740                                                 rs->sr_text = "objectClass modification from dynamicObject to static entry requires entryTtl deletion";
 741                                                 rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 742                                         }
 743                                         break;
 744
 745                                 case 1:
 746                                         /* need to add entryTtl to have a consistent entry */
 747                                         if ( entryTtl <= 0 ) {
 748                                                 rs->sr_text = "objectClass modification from static entry to dynamicObject requires entryTtl addition";
 749                                                 rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 750                                         }
 751                                         break;
 752                                 }
 753
 754                         } else
 755 #endif
 756                         {
 757                                 switch ( rc ) {
 758                                 case -1:
 759                                         rs->sr_text = "objectClass modification cannot turn dynamicObject into static entry";
 760                                         break;
 761
 762                                 case 1:
 763                                         rs->sr_text = "objectClass modification cannot turn static entry into dynamicObject";
 764                                         break;
 765                                 }
 766                                 rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 767                         }
 768
 769                         if ( rc != LDAP_SUCCESS ) {
 770                                 rc = backend_attribute( op, NULL, &op->o_req_ndn,
 771                                         slap_schema.si_ad_entry, NULL, ACL_DISCLOSE );
 772                                 if ( rc == LDAP_INSUFFICIENT_ACCESS ) {
 773                                         rs->sr_text = NULL;
 774                                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 775                                 }
 776                         }
 777                 }
 778         }
 779
 780         if ( rs->sr_err == LDAP_SUCCESS && entryTtl != 0 ) {
 781                 Modifications   *tmpmod = NULL, **modp;
 782
 783                 for ( modp = &op->orm_modlist; *modp; modp = &(*modp)->sml_next )
 784                         ;
 785
 786                 tmpmod = ch_calloc( 1, sizeof( Modifications ) );
 787                 tmpmod->sml_flags = SLAP_MOD_INTERNAL;
 788                 tmpmod->sml_type = ad_entryExpireTimestamp->ad_cname;
 789                 tmpmod->sml_desc = ad_entryExpireTimestamp;
 790
 791                 *modp = tmpmod;
 792
 793                 if ( entryTtl == -1 ) {
 794                         /* delete entryExpireTimestamp */
 795                         tmpmod->sml_op = LDAP_MOD_DELETE;
 796
 797                 } else {
 798                         time_t          expire;
 799                         char            tsbuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
 800                         struct berval   bv;
 801
 802                         /* keep entryExpireTimestamp consistent
 803                          * with entryTtl */
 804                         expire = slap_get_time() + entryTtl;
 805                         bv.bv_val = tsbuf;
 806                         bv.bv_len = sizeof( tsbuf );
 807                         slap_timestamp( &expire, &bv );
 808
 809                         tmpmod->sml_op = LDAP_MOD_REPLACE;
 810                         value_add_one( &tmpmod->sml_values, &bv );
 811                         value_add_one( &tmpmod->sml_nvalues, &bv );
 812                         tmpmod->sml_numvals = 1;
 813                 }
 814         }
 815
 816         if ( rs->sr_err ) {
 817                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 818                 send_ldap_result( op, rs );
 819                 return rs->sr_err;
 820         }
 821
 822         return SLAP_CB_CONTINUE;
 823 }
 824
 825 static int
 826 dds_op_rename( Operation *op, SlapReply *rs )
 827 {
 828         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 829         dds_info_t      *di = on->on_bi.bi_private;
 830
 831         if ( DDS_OFF( di ) ) {
 832                 return SLAP_CB_CONTINUE;
 833         }
 834
 835         /* we don't allow dynamicObjects to have static subordinates */
 836         if ( op->orr_nnewSup != NULL ) {
 837                 Entry           *e = NULL;
 838                 BackendInfo     *bi = op->o_bd->bd_info;
 839                 int             is_dynamicObject = 0,
 840                                 rc;
 841
 842                 rs->sr_err = LDAP_SUCCESS;
 843
 844                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 845                 rc = be_entry_get_rw( op, &op->o_req_ndn,
 846                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
 847                 if ( rc == LDAP_SUCCESS && e != NULL ) {
 848                         be_entry_release_r( op, e );
 849                         e = NULL;
 850                         is_dynamicObject = 1;
 851                 }
 852
 853                 rc = be_entry_get_rw( op, op->orr_nnewSup,
 854                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
 855                 if ( rc == LDAP_SUCCESS && e != NULL ) {
 856                         if ( !is_dynamicObject ) {
 857                                 /* return referral only if "disclose"
 858                                  * is granted on the object */
 859                                 if ( ! access_allowed( op, e,
 860                                                 slap_schema.si_ad_entry,
 861                                                 NULL, ACL_DISCLOSE, NULL ) )
 862                                 {
 863                                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 864                                         send_ldap_result( op, rs );
 865
 866                                 } else {
 867                                         send_ldap_error( op, rs, LDAP_CONSTRAINT_VIOLATION,
 868                                                 "static entry cannot have dynamicObject as newSuperior" );
 869                                 }
 870                         }
 871                         be_entry_release_r( op, e );
 872                 }
 873                 op->o_bd->bd_info = bi;
 874                 if ( rs->sr_err != LDAP_SUCCESS ) {
 875                         return rs->sr_err;
 876                 }
 877         }
 878
 879         return SLAP_CB_CONTINUE;
 880 }
 881
 882 static int
 883 slap_parse_refresh(
 884         struct berval   *in,
 885         struct berval   *ndn,
 886         time_t          *ttl,
 887         const char      **text,
 888         void            *ctx )
 889 {
 890         int                     rc = LDAP_SUCCESS;
 891         ber_tag_t               tag;
 892         ber_len_t               len = -1;
 893         BerElementBuffer        berbuf;
 894         BerElement              *ber = (BerElement *)&berbuf;
 895         struct berval           reqdata = BER_BVNULL;
 896         int                     tmp;
 897
 898         *text = NULL;
 899
 900         if ( ndn ) {
 901                 BER_BVZERO( ndn );
 902         }
 903
 904         if ( in == NULL || in->bv_len == 0 ) {
 905                 *text = "empty request data field in refresh exop";
 906                 return LDAP_PROTOCOL_ERROR;
 907         }
 908
 909         ber_dupbv_x( &reqdata, in, ctx );
 910
 911         /* ber_init2 uses reqdata directly, doesn't allocate new buffers */
 912         ber_init2( ber, &reqdata, 0 );
 913
 914         tag = ber_scanf( ber, "{" /*}*/ );
 915
 916         if ( tag == LBER_ERROR ) {
 917                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 918                         "slap_parse_refresh: decoding error.\n" );
 919                 goto decoding_error;
 920         }
 921
 922         tag = ber_peek_tag( ber, &len );
 923         if ( tag != LDAP_TAG_EXOP_REFRESH_REQ_DN ) {
 924                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 925                         "slap_parse_refresh: decoding error.\n" );
 926                 goto decoding_error;
 927         }
 928
 929         if ( ndn ) {
 930                 struct berval   dn;
 931
 932                 tag = ber_scanf( ber, "m", &dn );
 933                 if ( tag == LBER_ERROR ) {
 934                         Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 935                                 "slap_parse_refresh: DN parse failed.\n" );
 936                         goto decoding_error;
 937                 }
 938
 939                 rc = dnNormalize( 0, NULL, NULL, &dn, ndn, ctx );
 940                 if ( rc != LDAP_SUCCESS ) {
 941                         *text = "invalid DN in refresh exop request data";
 942                         goto done;
 943                 }
 944
 945         } else {
 946                 tag = ber_scanf( ber, "x" /* "m" */ );
 947                 if ( tag == LBER_DEFAULT ) {
 948                         goto decoding_error;
 949                 }
 950         }
 951
 952         tag = ber_peek_tag( ber, &len );
 953
 954         if ( tag != LDAP_TAG_EXOP_REFRESH_REQ_TTL ) {
 955                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 956                         "slap_parse_refresh: decoding error.\n" );
 957                 goto decoding_error;
 958         }
 959
 960         tag = ber_scanf( ber, "i", &tmp );
 961         if ( tag == LBER_ERROR ) {
 962                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 963                         "slap_parse_refresh: TTL parse failed.\n" );
 964                 goto decoding_error;
 965         }
 966
 967         if ( ttl ) {
 968                 *ttl = tmp;
 969         }
 970
 971         tag = ber_peek_tag( ber, &len );
 972
 973         if ( tag != LBER_DEFAULT || len != 0 ) {
 974 decoding_error:;
 975                 Log1( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 976                         "slap_parse_refresh: decoding error, len=%ld\n",
 977                         (long)len );
 978                 rc = LDAP_PROTOCOL_ERROR;
 979                 *text = "data decoding error";
 980
 981 done:;
 982                 if ( ndn && !BER_BVISNULL( ndn ) ) {
 983                         slap_sl_free( ndn->bv_val, ctx );
 984                         BER_BVZERO( ndn );
 985                 }
 986         }
 987
 988         if ( !BER_BVISNULL( &reqdata ) ) {
 989                 ber_memfree_x( reqdata.bv_val, ctx );
 990         }
 991
 992         return rc;
 993 }
 994
 995 static int
 996 dds_op_extended( Operation *op, SlapReply *rs )
 997 {
 998         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 999         dds_info_t      *di = on->on_bi.bi_private;
1000
1001         if ( DDS_OFF( di ) ) {
1002                 return SLAP_CB_CONTINUE;
1003         }
1004
1005         if ( bvmatch( &op->ore_reqoid, &slap_EXOP_REFRESH ) ) {
1006                 Entry           *e = NULL;
1007                 time_t          ttl;
1008                 BackendDB       db = *op->o_bd;
1009                 SlapReply       rs2 = { REP_RESULT };
1010                 Operation       op2 = *op;
1011                 slap_callback   sc = { 0 };
1012                 Modifications   ttlmod = { { 0 } };
1013                 struct berval   ttlvalues[ 2 ];
1014                 char            ttlbuf[STRLENOF("31557600") + 1];
1015
1016                 rs->sr_err = slap_parse_refresh( op->ore_reqdata, NULL, &ttl,
1017                         &rs->sr_text, NULL );
1018                 assert( rs->sr_err == LDAP_SUCCESS );
1019
1020                 if ( ttl <= 0 || ttl > DDS_RF2589_MAX_TTL ) {
1021                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1022                         rs->sr_text = "invalid time-to-live for dynamicObject";
1023                         return rs->sr_err;
1024                 }
1025
1026                 if ( ttl > di->di_max_ttl ) {
1027                         /* FIXME: I don't understand if this has to be an error,
1028                          * or an indication that the requested Ttl has been
1029                          * shortened to di->di_max_ttl >= 1 day */
1030                         rs->sr_err = LDAP_SIZELIMIT_EXCEEDED;
1031                         rs->sr_text = "time-to-live for dynamicObject exceeds limit";
1032                         return rs->sr_err;
1033                 }
1034
1035                 if ( di->di_min_ttl && ttl < di->di_min_ttl ) {
1036                         ttl = di->di_min_ttl;
1037                 }
1038
1039                 /* This does not apply to multi-master case */
1040                 if ( !( !SLAP_SINGLE_SHADOW( op->o_bd ) || be_isupdate( op ) ) ) {
1041                         /* we SHOULD return a referral in this case */
1042                         BerVarray defref = op->o_bd->be_update_refs
1043                                 ? op->o_bd->be_update_refs : default_referral;
1044
1045                         if ( defref != NULL ) {
1046                                 rs->sr_ref = referral_rewrite( op->o_bd->be_update_refs,
1047                                         NULL, NULL, LDAP_SCOPE_DEFAULT );
1048                                 if ( rs->sr_ref ) {
1049                                         rs->sr_flags |= REP_REF_MUSTBEFREED;
1050                                 } else {
1051                                         rs->sr_ref = defref;
1052                                 }
1053                                 rs->sr_err = LDAP_REFERRAL;
1054
1055                         } else {
1056                                 rs->sr_text = "shadow context; no update referral";
1057                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1058                         }
1059
1060                         return rs->sr_err;
1061                 }
1062
1063                 assert( !BER_BVISNULL( &op->o_req_ndn ) );
1064
1065
1066
1067                 /* check if exists but not dynamicObject */
1068                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1069                 rs->sr_err = be_entry_get_rw( op, &op->o_req_ndn,
1070                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
1071                 if ( rs->sr_err != LDAP_SUCCESS ) {
1072                         rs->sr_err = be_entry_get_rw( op, &op->o_req_ndn,
1073                                 NULL, NULL, 0, &e );
1074                         if ( rs->sr_err == LDAP_SUCCESS && e != NULL ) {
1075                                 /* return referral only if "disclose"
1076                                  * is granted on the object */
1077                                 if ( ! access_allowed( op, e,
1078                                                 slap_schema.si_ad_entry,
1079                                                 NULL, ACL_DISCLOSE, NULL ) )
1080                                 {
1081                                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
1082
1083                                 } else {
1084                                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
1085                                         rs->sr_text = "refresh operation only applies to dynamic objects";
1086                                 }
1087                                 be_entry_release_r( op, e );
1088
1089                         } else {
1090                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
1091                         }
1092                         return rs->sr_err;
1093
1094                 } else if ( e != NULL ) {
1095                         be_entry_release_r( op, e );
1096                 }
1097
1098                 /* we require manage privileges on the entryTtl,
1099                  * and fake a Relax control */
1100                 op2.o_tag = LDAP_REQ_MODIFY;
1101                 op2.o_bd = &db;
1102                 db.bd_info = (BackendInfo *)on->on_info;
1103                 op2.o_callback = &sc;
1104                 sc.sc_response = slap_null_cb;
1105                 op2.o_relax = SLAP_CONTROL_CRITICAL;
1106                 op2.orm_modlist = &ttlmod;
1107
1108                 ttlmod.sml_op = LDAP_MOD_REPLACE;
1109                 ttlmod.sml_flags = SLAP_MOD_MANAGING;
1110                 ttlmod.sml_desc = slap_schema.si_ad_entryTtl;
1111                 ttlmod.sml_values = ttlvalues;
1112                 ttlmod.sml_numvals = 1;
1113                 ttlvalues[ 0 ].bv_val = ttlbuf;
1114                 ttlvalues[ 0 ].bv_len = snprintf( ttlbuf, sizeof( ttlbuf ), "%ld", ttl );
1115                 BER_BVZERO( &ttlvalues[ 1 ] );
1116
1117                 /* the entryExpireTimestamp is added by modify */
1118                 rs->sr_err = op2.o_bd->be_modify( &op2, &rs2 );
1119
1120                 if ( ttlmod.sml_next != NULL ) {
1121                         slap_mods_free( ttlmod.sml_next, 1 );
1122                 }
1123
1124                 if ( rs->sr_err == LDAP_SUCCESS ) {
1125                         int                     rc;
1126                         BerElementBuffer        berbuf;
1127                         BerElement              *ber = (BerElement *)&berbuf;
1128
1129                         ber_init_w_nullc( ber, LBER_USE_DER );
1130
1131                         rc = ber_printf( ber, "{tiN}", LDAP_TAG_EXOP_REFRESH_RES_TTL, (int)ttl );
1132
1133                         if ( rc < 0 ) {
1134                                 rs->sr_err = LDAP_OTHER;
1135                                 rs->sr_text = "internal error";
1136
1137                         } else {
1138                                 (void)ber_flatten( ber, &rs->sr_rspdata );
1139                                 rs->sr_rspoid = ch_strdup( slap_EXOP_REFRESH.bv_val );
1140
1141                                 Log3( LDAP_DEBUG_TRACE, LDAP_LEVEL_INFO,
1142                                         "%s REFRESH dn=\"%s\" TTL=%ld\n",
1143                                         op->o_log_prefix, op->o_req_ndn.bv_val, ttl );
1144                         }
1145
1146                         ber_free_buf( ber );
1147                 }
1148
1149                 return rs->sr_err;
1150         }
1151
1152         return SLAP_CB_CONTINUE;
1153 }
1154
1155 enum {
1156         DDS_STATE = 1,
1157         DDS_MAXTTL,
1158         DDS_MINTTL,
1159         DDS_DEFAULTTTL,
1160         DDS_INTERVAL,
1161         DDS_TOLERANCE,
1162         DDS_MAXDYNAMICOBJS,
1163
1164         DDS_LAST
1165 };
1166
1167 static ConfigDriver dds_cfgen;
1168 #if 0
1169 static ConfigLDAPadd dds_ldadd;
1170 static ConfigCfAdd dds_cfadd;
1171 #endif
1172
1173 static ConfigTable dds_cfg[] = {
1174         { "dds-state", "on|off",
1175                 2, 2, 0, ARG_MAGIC|ARG_ON_OFF|DDS_STATE, dds_cfgen,
1176                 "( OLcfgOvAt:9.1 NAME 'olcDDSstate' "
1177                         "DESC 'RFC2589 Dynamic directory services state' "
1178                         "SYNTAX OMsBoolean "
1179                         "SINGLE-VALUE )", NULL, NULL },
1180         { "dds-max-ttl", "ttl",
1181                 2, 2, 0, ARG_MAGIC|DDS_MAXTTL, dds_cfgen,
1182                 "( OLcfgOvAt:9.2 NAME 'olcDDSmaxTtl' "
1183                         "DESC 'RFC2589 Dynamic directory services max TTL' "
1184                         "SYNTAX OMsDirectoryString "
1185                         "SINGLE-VALUE )", NULL, NULL },
1186         { "dds-min-ttl", "ttl",
1187                 2, 2, 0, ARG_MAGIC|DDS_MINTTL, dds_cfgen,
1188                 "( OLcfgOvAt:9.3 NAME 'olcDDSminTtl' "
1189                         "DESC 'RFC2589 Dynamic directory services min TTL' "
1190                         "SYNTAX OMsDirectoryString "
1191                         "SINGLE-VALUE )", NULL, NULL },
1192         { "dds-default-ttl", "ttl",
1193                 2, 2, 0, ARG_MAGIC|DDS_DEFAULTTTL, dds_cfgen,
1194                 "( OLcfgOvAt:9.4 NAME 'olcDDSdefaultTtl' "
1195                         "DESC 'RFC2589 Dynamic directory services default TTL' "
1196                         "SYNTAX OMsDirectoryString "
1197                         "SINGLE-VALUE )", NULL, NULL },
1198         { "dds-interval", "interval",
1199                 2, 2, 0, ARG_MAGIC|DDS_INTERVAL, dds_cfgen,
1200                 "( OLcfgOvAt:9.5 NAME 'olcDDSinterval' "
1201                         "DESC 'RFC2589 Dynamic directory services expiration "
1202                                 "task run interval' "
1203                         "SYNTAX OMsDirectoryString "
1204                         "SINGLE-VALUE )", NULL, NULL },
1205         { "dds-tolerance", "ttl",
1206                 2, 2, 0, ARG_MAGIC|DDS_TOLERANCE, dds_cfgen,
1207                 "( OLcfgOvAt:9.6 NAME 'olcDDStolerance' "
1208                         "DESC 'RFC2589 Dynamic directory services additional "
1209                                 "TTL in expiration scheduling' "
1210                         "SYNTAX OMsDirectoryString "
1211                         "SINGLE-VALUE )", NULL, NULL },
1212         { "dds-max-dynamicObjects", "num",
1213                 2, 2, 0, ARG_MAGIC|ARG_INT|DDS_MAXDYNAMICOBJS, dds_cfgen,
1214                 "( OLcfgOvAt:9.7 NAME 'olcDDSmaxDynamicObjects' "
1215                         "DESC 'RFC2589 Dynamic directory services max number of dynamic objects' "
1216                         "SYNTAX OMsInteger "
1217                         "SINGLE-VALUE )", NULL, NULL },
1218         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
1219 };
1220
1221 static ConfigOCs dds_ocs[] = {
1222         { "( OLcfgOvOc:9.1 "
1223                 "NAME 'olcDDSConfig' "
1224                 "DESC 'RFC2589 Dynamic directory services configuration' "
1225                 "SUP olcOverlayConfig "
1226                 "MAY ( "
1227                         "olcDDSstate "
1228                         "$ olcDDSmaxTtl "
1229                         "$ olcDDSminTtl "
1230                         "$ olcDDSdefaultTtl "
1231                         "$ olcDDSinterval "
1232                         "$ olcDDStolerance "
1233                         "$ olcDDSmaxDynamicObjects "
1234                 " ) "
1235                 ")", Cft_Overlay, dds_cfg, NULL, NULL /* dds_cfadd */ },
1236         { NULL, 0, NULL }
1237 };
1238
1239 #if 0
1240 static int
1241 dds_ldadd( CfEntryInfo *p, Entry *e, ConfigArgs *ca )
1242 {
1243         return LDAP_SUCCESS;
1244 }
1245
1246 static int
1247 dds_cfadd( Operation *op, SlapReply *rs, Entry *p, ConfigArgs *ca )
1248 {
1249         return 0;
1250 }
1251 #endif
1252
1253 static int
1254 dds_cfgen( ConfigArgs *c )
1255 {
1256         slap_overinst   *on = (slap_overinst *)c->bi;
1257         dds_info_t      *di = on->on_bi.bi_private;
1258         int             rc = 0;
1259         unsigned long   t;
1260
1261
1262         if ( c->op == SLAP_CONFIG_EMIT ) {
1263                 char            buf[ SLAP_TEXT_BUFLEN ];
1264                 struct berval   bv;
1265
1266                 switch( c->type ) {
1267                 case DDS_STATE:
1268                         c->value_int = !DDS_OFF( di );
1269                         break;
1270
1271                 case DDS_MAXTTL:
1272                         lutil_unparse_time( buf, sizeof( buf ), di->di_max_ttl );
1273                         ber_str2bv( buf, 0, 0, &bv );
1274                         value_add_one( &c->rvalue_vals, &bv );
1275                         break;
1276
1277                 case DDS_MINTTL:
1278                         if ( di->di_min_ttl ) {
1279                                 lutil_unparse_time( buf, sizeof( buf ), di->di_min_ttl );
1280                                 ber_str2bv( buf, 0, 0, &bv );
1281                                 value_add_one( &c->rvalue_vals, &bv );
1282
1283                         } else {
1284                                 rc = 1;
1285                         }
1286                         break;
1287
1288                 case DDS_DEFAULTTTL:
1289                         if ( di->di_default_ttl ) {
1290                                 lutil_unparse_time( buf, sizeof( buf ), di->di_default_ttl );
1291                                 ber_str2bv( buf, 0, 0, &bv );
1292                                 value_add_one( &c->rvalue_vals, &bv );
1293
1294                         } else {
1295                                 rc = 1;
1296                         }
1297                         break;
1298
1299                 case DDS_INTERVAL:
1300                         if ( di->di_interval ) {
1301                                 lutil_unparse_time( buf, sizeof( buf ), di->di_interval );
1302                                 ber_str2bv( buf, 0, 0, &bv );
1303                                 value_add_one( &c->rvalue_vals, &bv );
1304
1305                         } else {
1306                                 rc = 1;
1307                         }
1308                         break;
1309
1310                 case DDS_TOLERANCE:
1311                         if ( di->di_tolerance ) {
1312                                 lutil_unparse_time( buf, sizeof( buf ), di->di_tolerance );
1313                                 ber_str2bv( buf, 0, 0, &bv );
1314                                 value_add_one( &c->rvalue_vals, &bv );
1315
1316                         } else {
1317                                 rc = 1;
1318                         }
1319                         break;
1320
1321                 case DDS_MAXDYNAMICOBJS:
1322                         if ( di->di_max_dynamicObjects > 0 ) {
1323                                 c->value_int = di->di_max_dynamicObjects;
1324
1325                         } else {
1326                                 rc = 1;
1327                         }
1328                         break;
1329
1330                 default:
1331                         rc = 1;
1332                         break;
1333                 }
1334
1335                 return rc;
1336
1337         } else if ( c->op == LDAP_MOD_DELETE ) {
1338                 switch( c->type ) {
1339                 case DDS_STATE:
1340                         di->di_flags &= ~DDS_FOFF;
1341                         break;
1342
1343                 case DDS_MAXTTL:
1344                         di->di_min_ttl = DDS_RF2589_DEFAULT_TTL;
1345                         break;
1346
1347                 case DDS_MINTTL:
1348                         di->di_min_ttl = 0;
1349                         break;
1350
1351                 case DDS_DEFAULTTTL:
1352                         di->di_default_ttl = 0;
1353                         break;
1354
1355                 case DDS_INTERVAL:
1356                         di->di_interval = 0;
1357                         break;
1358
1359                 case DDS_TOLERANCE:
1360                         di->di_tolerance = 0;
1361                         break;
1362
1363                 case DDS_MAXDYNAMICOBJS:
1364                         di->di_max_dynamicObjects = 0;
1365                         break;
1366
1367                 default:
1368                         rc = 1;
1369                         break;
1370                 }
1371
1372                 return rc;
1373         }
1374
1375         switch ( c->type ) {
1376         case DDS_STATE:
1377                 if ( c->value_int ) {
1378                         di->di_flags &= ~DDS_FOFF;
1379
1380                 } else {
1381                         di->di_flags |= DDS_FOFF;
1382                 }
1383                 break;
1384
1385         case DDS_MAXTTL:
1386                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1387                         snprintf( c->cr_msg, sizeof( c->cr_msg),
1388                                 "DDS unable to parse dds-max-ttl \"%s\"",
1389                                 c->argv[ 1 ] );
1390                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1391                                 "%s: %s.\n", c->log, c->cr_msg );
1392                         return 1;
1393                 }
1394
1395                 if ( t < DDS_RF2589_DEFAULT_TTL || t > DDS_RF2589_MAX_TTL ) {
1396                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1397                                 "DDS invalid dds-max-ttl=%lu; must be between %d and %d",
1398                                 t, DDS_RF2589_DEFAULT_TTL, DDS_RF2589_MAX_TTL );
1399                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1400                                 "%s: %s.\n", c->log, c->cr_msg );
1401                         return 1;
1402                 }
1403
1404                 di->di_max_ttl = (time_t)t;
1405                 break;
1406
1407         case DDS_MINTTL:
1408                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1409                         snprintf( c->cr_msg, sizeof( c->cr_msg),
1410                                 "DDS unable to parse dds-min-ttl \"%s\"",
1411                                 c->argv[ 1 ] );
1412                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1413                                 "%s: %s.\n", c->log, c->cr_msg );
1414                         return 1;
1415                 }
1416
1417                 if ( t > DDS_RF2589_MAX_TTL ) {
1418                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1419                                 "DDS invalid dds-min-ttl=%lu",
1420                                 t );
1421                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1422                                 "%s: %s.\n", c->log, c->cr_msg );
1423                         return 1;
1424                 }
1425
1426                 if ( t == 0 ) {
1427                         di->di_min_ttl = DDS_RF2589_DEFAULT_TTL;
1428
1429                 } else {
1430                         di->di_min_ttl = (time_t)t;
1431                 }
1432                 break;
1433
1434         case DDS_DEFAULTTTL:
1435                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1436                         snprintf( c->cr_msg, sizeof( c->cr_msg),
1437                                 "DDS unable to parse dds-default-ttl \"%s\"",
1438                                 c->argv[ 1 ] );
1439                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1440                                 "%s: %s.\n", c->log, c->cr_msg );
1441                         return 1;
1442                 }
1443
1444                 if ( t > DDS_RF2589_MAX_TTL ) {
1445                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1446                                 "DDS invalid dds-default-ttl=%lu",
1447                                 t );
1448                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1449                                 "%s: %s.\n", c->log, c->cr_msg );
1450                         return 1;
1451                 }
1452
1453                 if ( t == 0 ) {
1454                         di->di_default_ttl = DDS_RF2589_DEFAULT_TTL;
1455
1456                 } else {
1457                         di->di_default_ttl = (time_t)t;
1458                 }
1459                 break;
1460
1461         case DDS_INTERVAL:
1462                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1463                         snprintf( c->cr_msg, sizeof( c->cr_msg),
1464                                 "DDS unable to parse dds-interval \"%s\"",
1465                                 c->argv[ 1 ] );
1466                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1467                                 "%s: %s.\n", c->log, c->cr_msg );
1468                         return 1;
1469                 }
1470
1471                 if ( t <= 0 ) {
1472                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1473                                 "DDS invalid dds-interval=%lu",
1474                                 t );
1475                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1476                                 "%s: %s.\n", c->log, c->cr_msg );
1477                         return 1;
1478                 }
1479
1480                 if ( t < 60 ) {
1481                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_NOTICE,
1482                                 "%s: dds-interval=%lu may be too small.\n",
1483                                 c->log, t );
1484                 }
1485
1486                 di->di_interval = (time_t)t;
1487                 if ( di->di_expire_task ) {
1488                         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1489                         if ( ldap_pvt_runqueue_isrunning( &slapd_rq, di->di_expire_task ) ) {
1490                                 ldap_pvt_runqueue_stoptask( &slapd_rq, di->di_expire_task );
1491                         }
1492                         di->di_expire_task->interval.tv_sec = DDS_INTERVAL( di );
1493                         ldap_pvt_runqueue_resched( &slapd_rq, di->di_expire_task, 0 );
1494                         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1495                 }
1496                 break;
1497
1498         case DDS_TOLERANCE:
1499                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1500                         snprintf( c->cr_msg, sizeof( c->cr_msg),
1501                                 "DDS unable to parse dds-tolerance \"%s\"",
1502                                 c->argv[ 1 ] );
1503                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1504                                 "%s: %s.\n", c->log, c->cr_msg );
1505                         return 1;
1506                 }
1507
1508                 if ( t > DDS_RF2589_MAX_TTL ) {
1509                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1510                                 "DDS invalid dds-tolerance=%lu",
1511                                 t );
1512                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1513                                 "%s: %s.\n", c->log, c->cr_msg );
1514                         return 1;
1515                 }
1516
1517                 di->di_tolerance = (time_t)t;
1518                 break;
1519
1520         case DDS_MAXDYNAMICOBJS:
1521                 if ( c->value_int < 0 ) {
1522                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1523                                 "DDS invalid dds-max-dynamicObjects=%d", c->value_int );
1524                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1525                                 "%s: %s.\n", c->log, c->cr_msg );
1526                         return 1;
1527                 }
1528                 di->di_max_dynamicObjects = c->value_int;
1529                 break;
1530
1531         default:
1532                 rc = 1;
1533                 break;
1534         }
1535
1536         return rc;
1537 }
1538
1539 static int
1540 dds_db_init(
1541         BackendDB       *be,
1542         ConfigReply     *cr)
1543 {
1544         slap_overinst   *on = (slap_overinst *)be->bd_info;
1545         dds_info_t      *di;
1546         BackendInfo     *bi = on->on_info->oi_orig;
1547
1548         if ( SLAP_ISGLOBALOVERLAY( be ) ) {
1549                 Log0( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1550                         "DDS cannot be used as global overlay.\n" );
1551                 return 1;
1552         }
1553
1554         /* check support for required functions */
1555         /* FIXME: some could be provided by other overlays in between */
1556         if ( bi->bi_op_add == NULL                      /* object creation */
1557                 || bi->bi_op_delete == NULL             /* object deletion */
1558                 || bi->bi_op_modify == NULL             /* object refresh */
1559                 || bi->bi_op_search == NULL             /* object expiration */
1560                 || bi->bi_entry_get_rw == NULL )        /* object type/existence checking */
1561         {
1562                 Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1563                         "DDS backend \"%s\" does not provide "
1564                         "required functionality.\n",
1565                         bi->bi_type );
1566                 return 1;
1567         }
1568
1569         di = (dds_info_t *)ch_calloc( 1, sizeof( dds_info_t ) );
1570         on->on_bi.bi_private = di;
1571
1572         di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1573         di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1574
1575         ldap_pvt_thread_mutex_init( &di->di_mutex );
1576
1577         SLAP_DBFLAGS( be ) |= SLAP_DBFLAG_DYNAMIC;
1578
1579         return 0;
1580 }
1581
1582 /* adds dynamicSubtrees to root DSE */
1583 static int
1584 dds_entry_info( void *arg, Entry *e )
1585 {
1586         dds_info_t      *di = (dds_info_t *)arg;
1587
1588         attr_merge( e, slap_schema.si_ad_dynamicSubtrees,
1589                 di->di_suffix, di->di_nsuffix );
1590
1591         return 0;
1592 }
1593
1594 /* callback that counts the returned entries, since the search
1595  * does not get to the point in slap_send_search_entries where
1596  * the actual count occurs */
1597 static int
1598 dds_count_cb( Operation *op, SlapReply *rs )
1599 {
1600         int     *nump = (int *)op->o_callback->sc_private;
1601
1602         switch ( rs->sr_type ) {
1603         case REP_SEARCH:
1604                 (*nump)++;
1605                 break;
1606
1607         case REP_SEARCHREF:
1608         case REP_RESULT:
1609                 break;
1610
1611         default:
1612                 assert( 0 );
1613         }
1614
1615         return 0;
1616 }
1617
1618 /* count dynamic objects existing in the database at startup */
1619 static int
1620 dds_count( void *ctx, BackendDB *be )
1621 {
1622         slap_overinst   *on = (slap_overinst *)be->bd_info;
1623         dds_info_t      *di = (dds_info_t *)on->on_bi.bi_private;
1624
1625         Connection      conn = { 0 };
1626         OperationBuffer opbuf;
1627         Operation       *op;
1628         slap_callback   sc = { 0 };
1629         SlapReply       rs = { REP_RESULT };
1630
1631         int             rc;
1632         char            *extra = "";
1633
1634         connection_fake_init2( &conn, &opbuf, ctx, 0 );
1635         op = &opbuf.ob_op;
1636
1637         op->o_tag = LDAP_REQ_SEARCH;
1638         memset( &op->oq_search, 0, sizeof( op->oq_search ) );
1639
1640         op->o_bd = be;
1641
1642         op->o_req_dn = op->o_bd->be_suffix[ 0 ];
1643         op->o_req_ndn = op->o_bd->be_nsuffix[ 0 ];
1644
1645         op->o_dn = op->o_bd->be_rootdn;
1646         op->o_ndn = op->o_bd->be_rootndn;
1647
1648         op->ors_scope = LDAP_SCOPE_SUBTREE;
1649         op->ors_tlimit = SLAP_NO_LIMIT;
1650         op->ors_slimit = SLAP_NO_LIMIT;
1651         op->ors_attrs = slap_anlist_no_attrs;
1652
1653         op->ors_filterstr.bv_len = STRLENOF( "(objectClass=" ")" )
1654                 + slap_schema.si_oc_dynamicObject->soc_cname.bv_len;
1655         op->ors_filterstr.bv_val = op->o_tmpalloc( op->ors_filterstr.bv_len + 1, op->o_tmpmemctx );
1656         snprintf( op->ors_filterstr.bv_val, op->ors_filterstr.bv_len + 1,
1657                 "(objectClass=%s)",
1658                 slap_schema.si_oc_dynamicObject->soc_cname.bv_val );
1659
1660         op->ors_filter = str2filter_x( op, op->ors_filterstr.bv_val );
1661         if ( op->ors_filter == NULL ) {
1662                 rs.sr_err = LDAP_OTHER;
1663                 goto done_search;
1664         }
1665
1666         op->o_callback = &sc;
1667         sc.sc_response = dds_count_cb;
1668         sc.sc_private = &di->di_num_dynamicObjects;
1669         di->di_num_dynamicObjects = 0;
1670
1671         op->o_bd->bd_info = (BackendInfo *)on->on_info;
1672         (void)op->o_bd->bd_info->bi_op_search( op, &rs );
1673         op->o_bd->bd_info = (BackendInfo *)on;
1674
1675 done_search:;
1676         op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
1677         filter_free_x( op, op->ors_filter, 1 );
1678
1679         rc = rs.sr_err;
1680         switch ( rs.sr_err ) {
1681         case LDAP_SUCCESS:
1682                 Log1( LDAP_DEBUG_STATS, LDAP_LEVEL_INFO,
1683                         "DDS non-expired=%d\n",
1684                         di->di_num_dynamicObjects );
1685                 break;
1686
1687         case LDAP_NO_SUCH_OBJECT:
1688                 /* (ITS#5267) database not created yet? */
1689                 rs.sr_err = LDAP_SUCCESS;
1690                 extra = " (ignored)";
1691                 /* fallthru */
1692
1693         default:
1694                 Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1695                         "DDS non-expired objects lookup failed err=%d%s\n",
1696                         rc, extra );
1697                 break;
1698         }
1699
1700         return rs.sr_err;
1701 }
1702
1703 static int
1704 dds_db_open(
1705         BackendDB       *be,
1706         ConfigReply     *cr )
1707 {
1708         slap_overinst   *on = (slap_overinst *)be->bd_info;
1709         dds_info_t      *di = on->on_bi.bi_private;
1710         int             rc = 0;
1711         void            *thrctx = ldap_pvt_thread_pool_context();
1712
1713         if ( slapMode & SLAP_TOOL_MODE )
1714                 return 0;
1715
1716         if ( DDS_OFF( di ) ) {
1717                 goto done;
1718         }
1719
1720         if ( SLAP_SINGLE_SHADOW( be ) ) {
1721                 Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1722                         "DDS incompatible with shadow database \"%s\".\n",
1723                         be->be_suffix[ 0 ].bv_val );
1724                 return 1;
1725         }
1726
1727         if ( di->di_max_ttl == 0 ) {
1728                 di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1729         }
1730
1731         if ( di->di_min_ttl == 0 ) {
1732                 di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1733         }
1734
1735         di->di_suffix = be->be_suffix;
1736         di->di_nsuffix = be->be_nsuffix;
1737
1738         /* count the dynamic objects first */
1739         rc = dds_count( thrctx, be );
1740         if ( rc != LDAP_SUCCESS ) {
1741                 rc = 1;
1742                 goto done;
1743         }
1744
1745         /* start expire task */
1746         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1747         di->di_expire_task = ldap_pvt_runqueue_insert( &slapd_rq,
1748                 DDS_INTERVAL( di ),
1749                 dds_expire_fn, di, "dds_expire_fn",
1750                 be->be_suffix[ 0 ].bv_val );
1751         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1752
1753         /* register dinamicSubtrees root DSE info support */
1754         rc = entry_info_register( dds_entry_info, (void *)di );
1755
1756 done:;
1757
1758         return rc;
1759 }
1760
1761 static int
1762 dds_db_close(
1763         BackendDB       *be,
1764         ConfigReply     *cr )
1765 {
1766         slap_overinst   *on = (slap_overinst *)be->bd_info;
1767         dds_info_t      *di = on->on_bi.bi_private;
1768
1769         /* stop expire task */
1770         if ( di && di->di_expire_task ) {
1771                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1772                 if ( ldap_pvt_runqueue_isrunning( &slapd_rq, di->di_expire_task ) ) {
1773                         ldap_pvt_runqueue_stoptask( &slapd_rq, di->di_expire_task );
1774                 }
1775                 ldap_pvt_runqueue_remove( &slapd_rq, di->di_expire_task );
1776                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1777                 di->di_expire_task = NULL;
1778         }
1779
1780         (void)entry_info_unregister( dds_entry_info, (void *)di );
1781
1782         return 0;
1783 }
1784
1785 static int
1786 dds_db_destroy(
1787         BackendDB       *be,
1788         ConfigReply     *cr )
1789 {
1790         slap_overinst   *on = (slap_overinst *)be->bd_info;
1791         dds_info_t      *di = on->on_bi.bi_private;
1792
1793         if ( di != NULL ) {
1794                 ldap_pvt_thread_mutex_destroy( &di->di_mutex );
1795
1796                 free( di );
1797         }
1798
1799         return 0;
1800 }
1801
1802 static int
1803 slap_exop_refresh(
1804                 Operation       *op,
1805                 SlapReply       *rs )
1806 {
1807         BackendDB               *bd = op->o_bd;
1808
1809         rs->sr_err = slap_parse_refresh( op->ore_reqdata, &op->o_req_ndn, NULL,
1810                 &rs->sr_text, op->o_tmpmemctx );
1811         if ( rs->sr_err != LDAP_SUCCESS ) {
1812                 return rs->sr_err;
1813         }
1814
1815         Log2( LDAP_DEBUG_STATS, LDAP_LEVEL_INFO,
1816                 "%s REFRESH dn=\"%s\"\n",
1817                 op->o_log_prefix, op->o_req_ndn.bv_val );
1818         op->o_req_dn = op->o_req_ndn;
1819
1820         op->o_bd = select_backend( &op->o_req_ndn, 0 );
1821         if ( op->o_bd == NULL ) {
1822                 send_ldap_error( op, rs, LDAP_NO_SUCH_OBJECT,
1823                         "no global superior knowledge" );
1824                 goto done;
1825         }
1826
1827         if ( !SLAP_DYNAMIC( op->o_bd ) ) {
1828                 send_ldap_error( op, rs, LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
1829                         "backend does not support dynamic directory services" );
1830                 goto done;
1831         }
1832
1833         rs->sr_err = backend_check_restrictions( op, rs,
1834                 (struct berval *)&slap_EXOP_REFRESH );
1835         if ( rs->sr_err != LDAP_SUCCESS ) {
1836                 goto done;
1837         }
1838
1839         if ( op->o_bd->be_extended == NULL ) {
1840                 send_ldap_error( op, rs, LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
1841                         "backend does not support extended operations" );
1842                 goto done;
1843         }
1844
1845         op->o_bd->be_extended( op, rs );
1846
1847 done:;
1848         if ( !BER_BVISNULL( &op->o_req_ndn ) ) {
1849                 op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
1850                 BER_BVZERO( &op->o_req_ndn );
1851                 BER_BVZERO( &op->o_req_dn );
1852         }
1853         op->o_bd = bd;
1854
1855         return rs->sr_err;
1856 }
1857
1858 static slap_overinst dds;
1859
1860 static int do_not_load_exop;
1861 static int do_not_replace_exop;
1862 static int do_not_load_schema;
1863
1864 #if SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC
1865 static
1866 #endif /* SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC */
1867 int
1868 dds_initialize()
1869 {
1870         int             rc = 0;
1871         int             i, code;
1872
1873         /* Make sure we don't exceed the bits reserved for userland */
1874         config_check_userland( DDS_LAST );
1875
1876         if ( !do_not_load_schema ) {
1877                 static struct {
1878                         char                    *desc;
1879                         slap_mask_t             flags;
1880                         AttributeDescription    **ad;
1881                 }               s_at[] = {
1882                         { "( 1.3.6.1.4.1.4203.666.1.57 "
1883                                 "NAME ( 'entryExpireTimestamp' ) "
1884                                 "DESC 'RFC2589 OpenLDAP extension: expire time of a dynamic object, "
1885                                         "computed as now + entryTtl' "
1886                                 "EQUALITY generalizedTimeMatch "
1887                                 "ORDERING generalizedTimeOrderingMatch "
1888                                 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
1889                                 "SINGLE-VALUE "
1890                                 "NO-USER-MODIFICATION "
1891                                 "USAGE dSAOperation )",
1892                                 SLAP_AT_HIDE,
1893                                 &ad_entryExpireTimestamp },
1894                         { NULL }
1895                 };
1896
1897                 for ( i = 0; s_at[ i ].desc != NULL; i++ ) {
1898                         code = register_at( s_at[ i ].desc, s_at[ i ].ad, 0 );
1899                         if ( code ) {
1900                                 Debug( LDAP_DEBUG_ANY,
1901                                         "dds_initialize: register_at failed\n", 0, 0, 0 );
1902                                 return code;
1903                         }
1904                         (*s_at[ i ].ad)->ad_type->sat_flags |= SLAP_AT_HIDE;
1905                 }
1906         }
1907
1908         if ( !do_not_load_exop ) {
1909                 rc = load_extop2( (struct berval *)&slap_EXOP_REFRESH,
1910                         SLAP_EXOP_WRITES|SLAP_EXOP_HIDE, slap_exop_refresh,
1911                         !do_not_replace_exop );
1912                 if ( rc != LDAP_SUCCESS ) {
1913                         Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1914                                 "DDS unable to register refresh exop: %d.\n",
1915                                 rc );
1916                         return rc;
1917                 }
1918         }
1919
1920         dds.on_bi.bi_type = "dds";
1921
1922         dds.on_bi.bi_db_init = dds_db_init;
1923         dds.on_bi.bi_db_open = dds_db_open;
1924         dds.on_bi.bi_db_close = dds_db_close;
1925         dds.on_bi.bi_db_destroy = dds_db_destroy;
1926
1927         dds.on_bi.bi_op_add = dds_op_add;
1928         dds.on_bi.bi_op_delete = dds_op_delete;
1929         dds.on_bi.bi_op_modify = dds_op_modify;
1930         dds.on_bi.bi_op_modrdn = dds_op_rename;
1931         dds.on_bi.bi_extended = dds_op_extended;
1932
1933         dds.on_bi.bi_cf_ocs = dds_ocs;
1934
1935         rc = config_register_schema( dds_cfg, dds_ocs );
1936         if ( rc ) {
1937                 return rc;
1938         }
1939
1940         return overlay_register( &dds );
1941 }
1942
1943 #if SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC
1944 int
1945 init_module( int argc, char *argv[] )
1946 {
1947         int     i;
1948
1949         for ( i = 0; i < argc; i++ ) {
1950                 char    *arg = argv[ i ];
1951                 int     no = 0;
1952
1953                 if ( strncasecmp( arg, "no-", STRLENOF( "no-" ) ) == 0 ) {
1954                         arg += STRLENOF( "no-" );
1955                         no = 1;
1956                 }
1957
1958                 if ( strcasecmp( arg, "exop" ) == 0 ) {
1959                         do_not_load_exop = no;
1960
1961                 } else if ( strcasecmp( arg, "replace" ) == 0 ) {
1962                         do_not_replace_exop = no;
1963
1964                 } else if ( strcasecmp( arg, "schema" ) == 0 ) {
1965                         do_not_load_schema = no;
1966
1967                 } else {
1968                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1969                                 "DDS unknown module arg[#%d]=\"%s\".\n",
1970                                 i, argv[ i ] );
1971                         return 1;
1972                 }
1973         }
1974
1975         return dds_initialize();
1976 }
1977 #endif /* SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC */
1978
1979 #endif  /* defined(SLAPD_OVER_DDS) */