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 2005-2010 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
 446                         op->o_callback = sc;
 447                 }
 448         }
 449
 450         return SLAP_CB_CONTINUE;
 451 }
 452
 453 static int
 454 dds_op_delete( Operation *op, SlapReply *rs )
 455 {
 456         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 457         dds_info_t      *di = on->on_bi.bi_private;
 458
 459         /* if required, install counter callback */
 460         if ( !DDS_OFF( di ) && di->di_max_dynamicObjects > 0 ) {
 461                 Entry           *e = NULL;
 462                 BackendInfo     *bi = op->o_bd->bd_info;
 463
 464                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 465                 rs->sr_err = be_entry_get_rw( op, &op->o_req_ndn,
 466                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
 467
 468                 /* FIXME: couldn't the entry be added before deletion? */
 469                 if ( rs->sr_err == LDAP_SUCCESS && e != NULL ) {
 470                         slap_callback   *sc;
 471
 472                         be_entry_release_r( op, e );
 473                         e = NULL;
 474
 475                         sc = op->o_tmpalloc( sizeof( slap_callback ), op->o_tmpmemctx );
 476                         sc->sc_cleanup = dds_freeit_cb;
 477                         sc->sc_response = dds_counter_cb;
 478                         sc->sc_private = di;
 479                         sc->sc_next = op->o_callback;
 480
 481                         op->o_callback = sc;
 482                 }
 483                 op->o_bd->bd_info = bi;
 484         }
 485
 486         return SLAP_CB_CONTINUE;
 487 }
 488
 489 static int
 490 dds_op_modify( Operation *op, SlapReply *rs )
 491 {
 492         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 493         dds_info_t      *di = (dds_info_t *)on->on_bi.bi_private;
 494         Modifications   *mod;
 495         Entry           *e = NULL;
 496         BackendInfo     *bi = op->o_bd->bd_info;
 497         int             was_dynamicObject = 0,
 498                         is_dynamicObject = 0;
 499         struct berval   bv_entryTtl = BER_BVNULL;
 500         time_t          entryTtl = 0;
 501         char            textbuf[ SLAP_TEXT_BUFLEN ];
 502
 503         if ( DDS_OFF( di ) ) {
 504                 return SLAP_CB_CONTINUE;
 505         }
 506
 507         /* bv_entryTtl stores the string representation of the entryTtl
 508          * across modifies for consistency checks of the final value;
 509          * the bv_val points to a static buffer; the bv_len is zero when
 510          * the attribute is deleted.
 511          * entryTtl stores the integer representation of the entryTtl;
 512          * its value is -1 when the attribute is deleted; it is 0 only
 513          * if no modifications of the entryTtl occurred, as an entryTtl
 514          * of 0 is invalid. */
 515         bv_entryTtl.bv_val = textbuf;
 516
 517         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 518         rs->sr_err = be_entry_get_rw( op, &op->o_req_ndn,
 519                 slap_schema.si_oc_dynamicObject, slap_schema.si_ad_entryTtl, 0, &e );
 520         if ( rs->sr_err == LDAP_SUCCESS && e != NULL ) {
 521                 Attribute       *a = attr_find( e->e_attrs, slap_schema.si_ad_entryTtl );
 522
 523                 /* the value of the entryTtl is saved for later checks */
 524                 if ( a != NULL ) {
 525                         unsigned long   ttl;
 526                         int             rc;
 527
 528                         bv_entryTtl.bv_len = a->a_nvals[ 0 ].bv_len;
 529                         AC_MEMCPY( bv_entryTtl.bv_val, a->a_nvals[ 0 ].bv_val, bv_entryTtl.bv_len );
 530                         bv_entryTtl.bv_val[ bv_entryTtl.bv_len ] = '\0';
 531                         rc = lutil_atoul( &ttl, bv_entryTtl.bv_val );
 532                         assert( rc == 0 );
 533                         entryTtl = (time_t)ttl;
 534                 }
 535
 536                 be_entry_release_r( op, e );
 537                 e = NULL;
 538                 was_dynamicObject = is_dynamicObject = 1;
 539         }
 540         op->o_bd->bd_info = bi;
 541
 542         rs->sr_err = LDAP_SUCCESS;
 543         for ( mod = op->orm_modlist; mod; mod = mod->sml_next ) {
 544                 if ( mod->sml_desc == slap_schema.si_ad_objectClass ) {
 545                         int             i;
 546                         ObjectClass     *oc;
 547
 548                         switch ( mod->sml_op ) {
 549                         case LDAP_MOD_DELETE:
 550                                 if ( mod->sml_values == NULL ) {
 551                                         is_dynamicObject = 0;
 552                                         break;
 553                                 }
 554
 555                                 for ( i = 0; !BER_BVISNULL( &mod->sml_values[ i ] ); i++ ) {
 556                                         oc = oc_bvfind( &mod->sml_values[ i ] );
 557                                         if ( oc == slap_schema.si_oc_dynamicObject ) {
 558                                                 is_dynamicObject = 0;
 559                                                 break;
 560                                         }
 561                                 }
 562
 563                                 break;
 564
 565                         case LDAP_MOD_REPLACE:
 566                                 if ( mod->sml_values == NULL ) {
 567                                         is_dynamicObject = 0;
 568                                         break;
 569                                 }
 570                                 /* fallthru */
 571
 572                         case LDAP_MOD_ADD:
 573                                 for ( i = 0; !BER_BVISNULL( &mod->sml_values[ i ] ); i++ ) {
 574                                         oc = oc_bvfind( &mod->sml_values[ i ] );
 575                                         if ( oc == slap_schema.si_oc_dynamicObject ) {
 576                                                 is_dynamicObject = 1;
 577                                                 break;
 578                                         }
 579                                 }
 580                                 break;
 581                         }
 582
 583                 } else if ( mod->sml_desc == slap_schema.si_ad_entryTtl ) {
 584                         unsigned long   uttl;
 585                         time_t          ttl;
 586                         int             rc;
 587
 588                         switch ( mod->sml_op ) {
 589                         case LDAP_MOD_DELETE:
 590                                 if ( mod->sml_values != NULL ) {
 591                                         if ( BER_BVISEMPTY( &bv_entryTtl )
 592                                                 || !bvmatch( &bv_entryTtl, &mod->sml_values[ 0 ] ) )
 593                                         {
 594                                                 rs->sr_err = backend_attribute( op, NULL, &op->o_req_ndn,
 595                                                         slap_schema.si_ad_entry, NULL, ACL_DISCLOSE );
 596                                                 if ( rs->sr_err == LDAP_INSUFFICIENT_ACCESS ) {
 597                                                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 598
 599                                                 } else {
 600                                                         rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 601                                                 }
 602                                                 goto done;
 603                                         }
 604                                 }
 605                                 bv_entryTtl.bv_len = 0;
 606                                 entryTtl = -1;
 607                                 break;
 608
 609                         case LDAP_MOD_REPLACE:
 610                                 bv_entryTtl.bv_len = 0;
 611                                 entryTtl = -1;
 612                                 /* fallthru */
 613
 614                         case SLAP_MOD_SOFTADD: /* FIXME? */
 615                         case LDAP_MOD_ADD:
 616                                 assert( mod->sml_values != NULL );
 617                                 assert( BER_BVISNULL( &mod->sml_values[ 1 ] ) );
 618
 619                                 if ( !BER_BVISEMPTY( &bv_entryTtl ) ) {
 620                                         rs->sr_err = backend_attribute( op, NULL, &op->o_req_ndn,
 621                                                 slap_schema.si_ad_entry, NULL, ACL_DISCLOSE );
 622                                         if ( rs->sr_err == LDAP_INSUFFICIENT_ACCESS ) {
 623                                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
 624
 625                                         } else {
 626                                                 rs->sr_text = "attribute 'entryTtl' cannot have multiple values";
 627                                                 rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 628                                         }
 629                                         goto done;
 630                                 }
 631
 632                                 rc = lutil_atoul( &uttl, mod->sml_values[ 0 ].bv_val );
 633                                 ttl = (time_t)uttl;
 634                                 assert( rc == 0 );
 635                                 if ( ttl > DDS_RF2589_MAX_TTL ) {
 636                                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 637                                         rs->sr_text = "invalid time-to-live for dynamicObject";
 638                                         goto done;
 639                                 }
 640
 641                                 if ( ttl <= 0 || ttl > di->di_max_ttl ) {
 642                                         /* FIXME: I don't understand if this has to be an error,
 643                                          * or an indication that the requested Ttl has been
 644                                          * shortened to di->di_max_ttl >= 1 day */
 645                                         rs->sr_err = LDAP_SIZELIMIT_EXCEEDED;
 646                                         rs->sr_text = "time-to-live for dynamicObject exceeds administrative limit";
 647                                         goto done;
 648                                 }
 649
 650                                 entryTtl = ttl;
 651                                 bv_entryTtl.bv_len = mod->sml_values[ 0 ].bv_len;
 652                                 AC_MEMCPY( bv_entryTtl.bv_val, mod->sml_values[ 0 ].bv_val, bv_entryTtl.bv_len );
 653                                 bv_entryTtl.bv_val[ bv_entryTtl.bv_len ] = '\0';
 654                                 break;
 655
 656                         case LDAP_MOD_INCREMENT:
 657                                 if ( BER_BVISEMPTY( &bv_entryTtl ) ) {
 658                                         rs->sr_err = backend_attribute( op, NULL, &op->o_req_ndn,
 659                                                 slap_schema.si_ad_entry, NULL, ACL_DISCLOSE );
 660                                         if ( rs->sr_err == LDAP_INSUFFICIENT_ACCESS ) {
 661                                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
 662
 663                                         } else {
 664                                                 rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 665                                                 rs->sr_text = "modify/increment: entryTtl: no such attribute";
 666                                         }
 667                                         goto done;
 668                                 }
 669
 670                                 entryTtl++;
 671                                 if ( entryTtl > DDS_RF2589_MAX_TTL ) {
 672                                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 673                                         rs->sr_text = "invalid time-to-live for dynamicObject";
 674
 675                                 } else if ( entryTtl <= 0 || entryTtl > di->di_max_ttl ) {
 676                                         /* FIXME: I don't understand if this has to be an error,
 677                                          * or an indication that the requested Ttl has been
 678                                          * shortened to di->di_max_ttl >= 1 day */
 679                                         rs->sr_err = LDAP_SIZELIMIT_EXCEEDED;
 680                                         rs->sr_text = "time-to-live for dynamicObject exceeds administrative limit";
 681                                 }
 682
 683                                 if ( rs->sr_err != LDAP_SUCCESS ) {
 684                                         rc = backend_attribute( op, NULL, &op->o_req_ndn,
 685                                                 slap_schema.si_ad_entry, NULL, ACL_DISCLOSE );
 686                                         if ( rc == LDAP_INSUFFICIENT_ACCESS ) {
 687                                                 rs->sr_text = NULL;
 688                                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
 689
 690                                         }
 691                                         goto done;
 692                                 }
 693
 694                                 bv_entryTtl.bv_len = snprintf( textbuf, sizeof( textbuf ), "%ld", entryTtl );
 695                                 break;
 696
 697                         default:
 698                                 assert( 0 );
 699                                 break;
 700                         }
 701
 702                 } else if ( mod->sml_desc == ad_entryExpireTimestamp ) {
 703                         /* should have been trapped earlier */
 704                         assert( mod->sml_flags & SLAP_MOD_INTERNAL );
 705                 }
 706         }
 707
 708 done:;
 709         if ( rs->sr_err == LDAP_SUCCESS ) {
 710                 int     rc;
 711
 712                 /* FIXME: this could be allowed when the Relax control is used...
 713                  * in that case:
 714                  *
 715                  * TODO
 716                  *
 717                  *      static => dynamic:
 718                  *              entryTtl must be provided; add
 719                  *              entryExpireTimestamp accordingly
 720                  *
 721                  *      dynamic => static:
 722                  *              entryTtl must be removed; remove
 723                  *              entryTimestamp accordingly
 724                  *
 725                  * ... but we need to make sure that there are no subordinate
 726                  * issues...
 727                  */
 728                 rc = is_dynamicObject - was_dynamicObject;
 729                 if ( rc ) {
 730 #if 0 /* fix subordinate issues first */
 731                         if ( get_relax( op ) ) {
 732                                 switch ( rc ) {
 733                                 case -1:
 734                                         /* need to delete entryTtl to have a consistent entry */
 735                                         if ( entryTtl != -1 ) {
 736                                                 rs->sr_text = "objectClass modification from dynamicObject to static entry requires entryTtl deletion";
 737                                                 rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 738                                         }
 739                                         break;
 740
 741                                 case 1:
 742                                         /* need to add entryTtl to have a consistent entry */
 743                                         if ( entryTtl <= 0 ) {
 744                                                 rs->sr_text = "objectClass modification from static entry to dynamicObject requires entryTtl addition";
 745                                                 rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 746                                         }
 747                                         break;
 748                                 }
 749
 750                         } else
 751 #endif
 752                         {
 753                                 switch ( rc ) {
 754                                 case -1:
 755                                         rs->sr_text = "objectClass modification cannot turn dynamicObject into static entry";
 756                                         break;
 757
 758                                 case 1:
 759                                         rs->sr_text = "objectClass modification cannot turn static entry into dynamicObject";
 760                                         break;
 761                                 }
 762                                 rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 763                         }
 764
 765                         if ( rc != LDAP_SUCCESS ) {
 766                                 rc = backend_attribute( op, NULL, &op->o_req_ndn,
 767                                         slap_schema.si_ad_entry, NULL, ACL_DISCLOSE );
 768                                 if ( rc == LDAP_INSUFFICIENT_ACCESS ) {
 769                                         rs->sr_text = NULL;
 770                                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 771                                 }
 772                         }
 773                 }
 774         }
 775
 776         if ( rs->sr_err == LDAP_SUCCESS && entryTtl != 0 ) {
 777                 Modifications   *tmpmod = NULL, **modp;
 778
 779                 for ( modp = &op->orm_modlist; *modp; modp = &(*modp)->sml_next )
 780                         ;
 781
 782                 tmpmod = ch_calloc( 1, sizeof( Modifications ) );
 783                 tmpmod->sml_flags = SLAP_MOD_INTERNAL;
 784                 tmpmod->sml_type = ad_entryExpireTimestamp->ad_cname;
 785                 tmpmod->sml_desc = ad_entryExpireTimestamp;
 786
 787                 *modp = tmpmod;
 788
 789                 if ( entryTtl == -1 ) {
 790                         /* delete entryExpireTimestamp */
 791                         tmpmod->sml_op = LDAP_MOD_DELETE;
 792
 793                 } else {
 794                         time_t          expire;
 795                         char            tsbuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
 796                         struct berval   bv;
 797
 798                         /* keep entryExpireTimestamp consistent
 799                          * with entryTtl */
 800                         expire = slap_get_time() + entryTtl;
 801                         bv.bv_val = tsbuf;
 802                         bv.bv_len = sizeof( tsbuf );
 803                         slap_timestamp( &expire, &bv );
 804
 805                         tmpmod->sml_op = LDAP_MOD_REPLACE;
 806                         value_add_one( &tmpmod->sml_values, &bv );
 807                         value_add_one( &tmpmod->sml_nvalues, &bv );
 808                         tmpmod->sml_numvals = 1;
 809                 }
 810         }
 811
 812         if ( rs->sr_err ) {
 813                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 814                 send_ldap_result( op, rs );
 815                 return rs->sr_err;
 816         }
 817
 818         return SLAP_CB_CONTINUE;
 819 }
 820
 821 static int
 822 dds_op_rename( Operation *op, SlapReply *rs )
 823 {
 824         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 825         dds_info_t      *di = on->on_bi.bi_private;
 826
 827         if ( DDS_OFF( di ) ) {
 828                 return SLAP_CB_CONTINUE;
 829         }
 830
 831         /* we don't allow dynamicObjects to have static subordinates */
 832         if ( op->orr_nnewSup != NULL ) {
 833                 Entry           *e = NULL;
 834                 BackendInfo     *bi = op->o_bd->bd_info;
 835                 int             is_dynamicObject = 0,
 836                                 rc;
 837
 838                 rs->sr_err = LDAP_SUCCESS;
 839
 840                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 841                 rc = be_entry_get_rw( op, &op->o_req_ndn,
 842                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
 843                 if ( rc == LDAP_SUCCESS && e != NULL ) {
 844                         be_entry_release_r( op, e );
 845                         e = NULL;
 846                         is_dynamicObject = 1;
 847                 }
 848
 849                 rc = be_entry_get_rw( op, op->orr_nnewSup,
 850                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
 851                 if ( rc == LDAP_SUCCESS && e != NULL ) {
 852                         if ( !is_dynamicObject ) {
 853                                 /* return referral only if "disclose"
 854                                  * is granted on the object */
 855                                 if ( ! access_allowed( op, e,
 856                                                 slap_schema.si_ad_entry,
 857                                                 NULL, ACL_DISCLOSE, NULL ) )
 858                                 {
 859                                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 860                                         send_ldap_result( op, rs );
 861
 862                                 } else {
 863                                         send_ldap_error( op, rs, LDAP_CONSTRAINT_VIOLATION,
 864                                                 "static entry cannot have dynamicObject as newSuperior" );
 865                                 }
 866                         }
 867                         be_entry_release_r( op, e );
 868                 }
 869                 op->o_bd->bd_info = bi;
 870                 if ( rs->sr_err != LDAP_SUCCESS ) {
 871                         return rs->sr_err;
 872                 }
 873         }
 874
 875         return SLAP_CB_CONTINUE;
 876 }
 877
 878 static int
 879 slap_parse_refresh(
 880         struct berval   *in,
 881         struct berval   *ndn,
 882         time_t          *ttl,
 883         const char      **text,
 884         void            *ctx )
 885 {
 886         int                     rc = LDAP_SUCCESS;
 887         ber_tag_t               tag;
 888         ber_len_t               len = -1;
 889         BerElementBuffer        berbuf;
 890         BerElement              *ber = (BerElement *)&berbuf;
 891         struct berval           reqdata = BER_BVNULL;
 892         int                     tmp;
 893
 894         *text = NULL;
 895
 896         if ( ndn ) {
 897                 BER_BVZERO( ndn );
 898         }
 899
 900         if ( in == NULL || in->bv_len == 0 ) {
 901                 *text = "empty request data field in refresh exop";
 902                 return LDAP_PROTOCOL_ERROR;
 903         }
 904
 905         ber_dupbv_x( &reqdata, in, ctx );
 906
 907         /* ber_init2 uses reqdata directly, doesn't allocate new buffers */
 908         ber_init2( ber, &reqdata, 0 );
 909
 910         tag = ber_scanf( ber, "{" /*}*/ );
 911
 912         if ( tag == LBER_ERROR ) {
 913                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 914                         "slap_parse_refresh: decoding error.\n" );
 915                 goto decoding_error;
 916         }
 917
 918         tag = ber_peek_tag( ber, &len );
 919         if ( tag != LDAP_TAG_EXOP_REFRESH_REQ_DN ) {
 920                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 921                         "slap_parse_refresh: decoding error.\n" );
 922                 goto decoding_error;
 923         }
 924
 925         if ( ndn ) {
 926                 struct berval   dn;
 927
 928                 tag = ber_scanf( ber, "m", &dn );
 929                 if ( tag == LBER_ERROR ) {
 930                         Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 931                                 "slap_parse_refresh: DN parse failed.\n" );
 932                         goto decoding_error;
 933                 }
 934
 935                 rc = dnNormalize( 0, NULL, NULL, &dn, ndn, ctx );
 936                 if ( rc != LDAP_SUCCESS ) {
 937                         *text = "invalid DN in refresh exop request data";
 938                         goto done;
 939                 }
 940
 941         } else {
 942                 tag = ber_scanf( ber, "x" /* "m" */ );
 943                 if ( tag == LBER_DEFAULT ) {
 944                         goto decoding_error;
 945                 }
 946         }
 947
 948         tag = ber_peek_tag( ber, &len );
 949
 950         if ( tag != LDAP_TAG_EXOP_REFRESH_REQ_TTL ) {
 951                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 952                         "slap_parse_refresh: decoding error.\n" );
 953                 goto decoding_error;
 954         }
 955
 956         tag = ber_scanf( ber, "i", &tmp );
 957         if ( tag == LBER_ERROR ) {
 958                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 959                         "slap_parse_refresh: TTL parse failed.\n" );
 960                 goto decoding_error;
 961         }
 962
 963         if ( ttl ) {
 964                 *ttl = tmp;
 965         }
 966
 967         tag = ber_peek_tag( ber, &len );
 968
 969         if ( tag != LBER_DEFAULT || len != 0 ) {
 970 decoding_error:;
 971                 Log1( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 972                         "slap_parse_refresh: decoding error, len=%ld\n",
 973                         (long)len );
 974                 rc = LDAP_PROTOCOL_ERROR;
 975                 *text = "data decoding error";
 976
 977 done:;
 978                 if ( ndn && !BER_BVISNULL( ndn ) ) {
 979                         slap_sl_free( ndn->bv_val, ctx );
 980                         BER_BVZERO( ndn );
 981                 }
 982         }
 983
 984         if ( !BER_BVISNULL( &reqdata ) ) {
 985                 ber_memfree_x( reqdata.bv_val, ctx );
 986         }
 987
 988         return rc;
 989 }
 990
 991 static int
 992 dds_op_extended( Operation *op, SlapReply *rs )
 993 {
 994         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 995         dds_info_t      *di = on->on_bi.bi_private;
 996
 997         if ( DDS_OFF( di ) ) {
 998                 return SLAP_CB_CONTINUE;
 999         }
1000
1001         if ( bvmatch( &op->ore_reqoid, &slap_EXOP_REFRESH ) ) {
1002                 Entry           *e = NULL;
1003                 time_t          ttl;
1004                 BackendDB       db = *op->o_bd;
1005                 SlapReply       rs2 = { REP_RESULT };
1006                 Operation       op2 = *op;
1007                 slap_callback   sc = { 0 };
1008                 Modifications   ttlmod = { { 0 } };
1009                 struct berval   ttlvalues[ 2 ];
1010                 char            ttlbuf[STRLENOF("31557600") + 1];
1011
1012                 rs->sr_err = slap_parse_refresh( op->ore_reqdata, NULL, &ttl,
1013                         &rs->sr_text, NULL );
1014                 assert( rs->sr_err == LDAP_SUCCESS );
1015
1016                 if ( ttl <= 0 || ttl > DDS_RF2589_MAX_TTL ) {
1017                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1018                         rs->sr_text = "invalid time-to-live for dynamicObject";
1019                         return rs->sr_err;
1020                 }
1021
1022                 if ( ttl > di->di_max_ttl ) {
1023                         /* FIXME: I don't understand if this has to be an error,
1024                          * or an indication that the requested Ttl has been
1025                          * shortened to di->di_max_ttl >= 1 day */
1026                         rs->sr_err = LDAP_SIZELIMIT_EXCEEDED;
1027                         rs->sr_text = "time-to-live for dynamicObject exceeds limit";
1028                         return rs->sr_err;
1029                 }
1030
1031                 if ( di->di_min_ttl && ttl < di->di_min_ttl ) {
1032                         ttl = di->di_min_ttl;
1033                 }
1034
1035                 /* This does not apply to multi-master case */
1036                 if ( !( !SLAP_SINGLE_SHADOW( op->o_bd ) || be_isupdate( op ) ) ) {
1037                         /* we SHOULD return a referral in this case */
1038                         BerVarray defref = op->o_bd->be_update_refs
1039                                 ? op->o_bd->be_update_refs : default_referral;
1040
1041                         if ( defref != NULL ) {
1042                                 rs->sr_ref = referral_rewrite( op->o_bd->be_update_refs,
1043                                         NULL, NULL, LDAP_SCOPE_DEFAULT );
1044                                 if ( rs->sr_ref ) {
1045                                         rs->sr_flags |= REP_REF_MUSTBEFREED;
1046                                 } else {
1047                                         rs->sr_ref = defref;
1048                                 }
1049                                 rs->sr_err = LDAP_REFERRAL;
1050
1051                         } else {
1052                                 rs->sr_text = "shadow context; no update referral";
1053                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1054                         }
1055
1056                         return rs->sr_err;
1057                 }
1058
1059                 assert( !BER_BVISNULL( &op->o_req_ndn ) );
1060
1061
1062
1063                 /* check if exists but not dynamicObject */
1064                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1065                 rs->sr_err = be_entry_get_rw( op, &op->o_req_ndn,
1066                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
1067                 if ( rs->sr_err != LDAP_SUCCESS ) {
1068                         rs->sr_err = be_entry_get_rw( op, &op->o_req_ndn,
1069                                 NULL, NULL, 0, &e );
1070                         if ( rs->sr_err == LDAP_SUCCESS && e != NULL ) {
1071                                 /* return referral only if "disclose"
1072                                  * is granted on the object */
1073                                 if ( ! access_allowed( op, e,
1074                                                 slap_schema.si_ad_entry,
1075                                                 NULL, ACL_DISCLOSE, NULL ) )
1076                                 {
1077                                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
1078
1079                                 } else {
1080                                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
1081                                         rs->sr_text = "refresh operation only applies to dynamic objects";
1082                                 }
1083                                 be_entry_release_r( op, e );
1084
1085                         } else {
1086                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
1087                         }
1088                         return rs->sr_err;
1089
1090                 } else if ( e != NULL ) {
1091                         be_entry_release_r( op, e );
1092                 }
1093
1094                 /* we require manage privileges on the entryTtl,
1095                  * and fake a Relax control */
1096                 op2.o_tag = LDAP_REQ_MODIFY;
1097                 op2.o_bd = &db;
1098                 db.bd_info = (BackendInfo *)on->on_info;
1099                 op2.o_callback = &sc;
1100                 sc.sc_response = slap_null_cb;
1101                 op2.o_relax = SLAP_CONTROL_CRITICAL;
1102                 op2.orm_modlist = &ttlmod;
1103
1104                 ttlmod.sml_op = LDAP_MOD_REPLACE;
1105                 ttlmod.sml_flags = SLAP_MOD_MANAGING;
1106                 ttlmod.sml_desc = slap_schema.si_ad_entryTtl;
1107                 ttlmod.sml_values = ttlvalues;
1108                 ttlmod.sml_numvals = 1;
1109                 ttlvalues[ 0 ].bv_val = ttlbuf;
1110                 ttlvalues[ 0 ].bv_len = snprintf( ttlbuf, sizeof( ttlbuf ), "%ld", ttl );
1111                 BER_BVZERO( &ttlvalues[ 1 ] );
1112
1113                 /* the entryExpireTimestamp is added by modify */
1114                 rs->sr_err = op2.o_bd->be_modify( &op2, &rs2 );
1115
1116                 if ( ttlmod.sml_next != NULL ) {
1117                         slap_mods_free( ttlmod.sml_next, 1 );
1118                 }
1119
1120                 if ( rs->sr_err == LDAP_SUCCESS ) {
1121                         int                     rc;
1122                         BerElementBuffer        berbuf;
1123                         BerElement              *ber = (BerElement *)&berbuf;
1124
1125                         ber_init_w_nullc( ber, LBER_USE_DER );
1126
1127                         rc = ber_printf( ber, "{tiN}", LDAP_TAG_EXOP_REFRESH_RES_TTL, (int)ttl );
1128
1129                         if ( rc < 0 ) {
1130                                 rs->sr_err = LDAP_OTHER;
1131                                 rs->sr_text = "internal error";
1132
1133                         } else {
1134                                 (void)ber_flatten( ber, &rs->sr_rspdata );
1135                                 rs->sr_rspoid = ch_strdup( slap_EXOP_REFRESH.bv_val );
1136
1137                                 Log3( LDAP_DEBUG_TRACE, LDAP_LEVEL_INFO,
1138                                         "%s REFRESH dn=\"%s\" TTL=%ld\n",
1139                                         op->o_log_prefix, op->o_req_ndn.bv_val, ttl );
1140                         }
1141
1142                         ber_free_buf( ber );
1143                 }
1144
1145                 return rs->sr_err;
1146         }
1147
1148         return SLAP_CB_CONTINUE;
1149 }
1150
1151 enum {
1152         DDS_STATE = 1,
1153         DDS_MAXTTL,
1154         DDS_MINTTL,
1155         DDS_DEFAULTTTL,
1156         DDS_INTERVAL,
1157         DDS_TOLERANCE,
1158         DDS_MAXDYNAMICOBJS,
1159
1160         DDS_LAST
1161 };
1162
1163 static ConfigDriver dds_cfgen;
1164 #if 0
1165 static ConfigLDAPadd dds_ldadd;
1166 static ConfigCfAdd dds_cfadd;
1167 #endif
1168
1169 static ConfigTable dds_cfg[] = {
1170         { "dds-state", "on|off",
1171                 2, 2, 0, ARG_MAGIC|ARG_ON_OFF|DDS_STATE, dds_cfgen,
1172                 "( OLcfgOvAt:9.1 NAME 'olcDDSstate' "
1173                         "DESC 'RFC2589 Dynamic directory services state' "
1174                         "SYNTAX OMsBoolean "
1175                         "SINGLE-VALUE )", NULL, NULL },
1176         { "dds-max-ttl", "ttl",
1177                 2, 2, 0, ARG_MAGIC|DDS_MAXTTL, dds_cfgen,
1178                 "( OLcfgOvAt:9.2 NAME 'olcDDSmaxTtl' "
1179                         "DESC 'RFC2589 Dynamic directory services max TTL' "
1180                         "SYNTAX OMsDirectoryString "
1181                         "SINGLE-VALUE )", NULL, NULL },
1182         { "dds-min-ttl", "ttl",
1183                 2, 2, 0, ARG_MAGIC|DDS_MINTTL, dds_cfgen,
1184                 "( OLcfgOvAt:9.3 NAME 'olcDDSminTtl' "
1185                         "DESC 'RFC2589 Dynamic directory services min TTL' "
1186                         "SYNTAX OMsDirectoryString "
1187                         "SINGLE-VALUE )", NULL, NULL },
1188         { "dds-default-ttl", "ttl",
1189                 2, 2, 0, ARG_MAGIC|DDS_DEFAULTTTL, dds_cfgen,
1190                 "( OLcfgOvAt:9.4 NAME 'olcDDSdefaultTtl' "
1191                         "DESC 'RFC2589 Dynamic directory services default TTL' "
1192                         "SYNTAX OMsDirectoryString "
1193                         "SINGLE-VALUE )", NULL, NULL },
1194         { "dds-interval", "interval",
1195                 2, 2, 0, ARG_MAGIC|DDS_INTERVAL, dds_cfgen,
1196                 "( OLcfgOvAt:9.5 NAME 'olcDDSinterval' "
1197                         "DESC 'RFC2589 Dynamic directory services expiration "
1198                                 "task run interval' "
1199                         "SYNTAX OMsDirectoryString "
1200                         "SINGLE-VALUE )", NULL, NULL },
1201         { "dds-tolerance", "ttl",
1202                 2, 2, 0, ARG_MAGIC|DDS_TOLERANCE, dds_cfgen,
1203                 "( OLcfgOvAt:9.6 NAME 'olcDDStolerance' "
1204                         "DESC 'RFC2589 Dynamic directory services additional "
1205                                 "TTL in expiration scheduling' "
1206                         "SYNTAX OMsDirectoryString "
1207                         "SINGLE-VALUE )", NULL, NULL },
1208         { "dds-max-dynamicObjects", "num",
1209                 2, 2, 0, ARG_MAGIC|ARG_INT|DDS_MAXDYNAMICOBJS, dds_cfgen,
1210                 "( OLcfgOvAt:9.7 NAME 'olcDDSmaxDynamicObjects' "
1211                         "DESC 'RFC2589 Dynamic directory services max number of dynamic objects' "
1212                         "SYNTAX OMsInteger "
1213                         "SINGLE-VALUE )", NULL, NULL },
1214         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
1215 };
1216
1217 static ConfigOCs dds_ocs[] = {
1218         { "( OLcfgOvOc:9.1 "
1219                 "NAME 'olcDDSConfig' "
1220                 "DESC 'RFC2589 Dynamic directory services configuration' "
1221                 "SUP olcOverlayConfig "
1222                 "MAY ( "
1223                         "olcDDSstate "
1224                         "$ olcDDSmaxTtl "
1225                         "$ olcDDSminTtl "
1226                         "$ olcDDSdefaultTtl "
1227                         "$ olcDDSinterval "
1228                         "$ olcDDStolerance "
1229                         "$ olcDDSmaxDynamicObjects "
1230                 " ) "
1231                 ")", Cft_Overlay, dds_cfg, NULL, NULL /* dds_cfadd */ },
1232         { NULL, 0, NULL }
1233 };
1234
1235 #if 0
1236 static int
1237 dds_ldadd( CfEntryInfo *p, Entry *e, ConfigArgs *ca )
1238 {
1239         return LDAP_SUCCESS;
1240 }
1241
1242 static int
1243 dds_cfadd( Operation *op, SlapReply *rs, Entry *p, ConfigArgs *ca )
1244 {
1245         return 0;
1246 }
1247 #endif
1248
1249 static int
1250 dds_cfgen( ConfigArgs *c )
1251 {
1252         slap_overinst   *on = (slap_overinst *)c->bi;
1253         dds_info_t      *di = on->on_bi.bi_private;
1254         int             rc = 0;
1255         unsigned long   t;
1256
1257
1258         if ( c->op == SLAP_CONFIG_EMIT ) {
1259                 char            buf[ SLAP_TEXT_BUFLEN ];
1260                 struct berval   bv;
1261
1262                 switch( c->type ) {
1263                 case DDS_STATE:
1264                         c->value_int = !DDS_OFF( di );
1265                         break;
1266
1267                 case DDS_MAXTTL:
1268                         lutil_unparse_time( buf, sizeof( buf ), di->di_max_ttl );
1269                         ber_str2bv( buf, 0, 0, &bv );
1270                         value_add_one( &c->rvalue_vals, &bv );
1271                         break;
1272
1273                 case DDS_MINTTL:
1274                         if ( di->di_min_ttl ) {
1275                                 lutil_unparse_time( buf, sizeof( buf ), di->di_min_ttl );
1276                                 ber_str2bv( buf, 0, 0, &bv );
1277                                 value_add_one( &c->rvalue_vals, &bv );
1278
1279                         } else {
1280                                 rc = 1;
1281                         }
1282                         break;
1283
1284                 case DDS_DEFAULTTTL:
1285                         if ( di->di_default_ttl ) {
1286                                 lutil_unparse_time( buf, sizeof( buf ), di->di_default_ttl );
1287                                 ber_str2bv( buf, 0, 0, &bv );
1288                                 value_add_one( &c->rvalue_vals, &bv );
1289
1290                         } else {
1291                                 rc = 1;
1292                         }
1293                         break;
1294
1295                 case DDS_INTERVAL:
1296                         if ( di->di_interval ) {
1297                                 lutil_unparse_time( buf, sizeof( buf ), di->di_interval );
1298                                 ber_str2bv( buf, 0, 0, &bv );
1299                                 value_add_one( &c->rvalue_vals, &bv );
1300
1301                         } else {
1302                                 rc = 1;
1303                         }
1304                         break;
1305
1306                 case DDS_TOLERANCE:
1307                         if ( di->di_tolerance ) {
1308                                 lutil_unparse_time( buf, sizeof( buf ), di->di_tolerance );
1309                                 ber_str2bv( buf, 0, 0, &bv );
1310                                 value_add_one( &c->rvalue_vals, &bv );
1311
1312                         } else {
1313                                 rc = 1;
1314                         }
1315                         break;
1316
1317                 case DDS_MAXDYNAMICOBJS:
1318                         if ( di->di_max_dynamicObjects > 0 ) {
1319                                 c->value_int = di->di_max_dynamicObjects;
1320
1321                         } else {
1322                                 rc = 1;
1323                         }
1324                         break;
1325
1326                 default:
1327                         rc = 1;
1328                         break;
1329                 }
1330
1331                 return rc;
1332
1333         } else if ( c->op == LDAP_MOD_DELETE ) {
1334                 switch( c->type ) {
1335                 case DDS_STATE:
1336                         di->di_flags &= ~DDS_FOFF;
1337                         break;
1338
1339                 case DDS_MAXTTL:
1340                         di->di_min_ttl = DDS_RF2589_DEFAULT_TTL;
1341                         break;
1342
1343                 case DDS_MINTTL:
1344                         di->di_min_ttl = 0;
1345                         break;
1346
1347                 case DDS_DEFAULTTTL:
1348                         di->di_default_ttl = 0;
1349                         break;
1350
1351                 case DDS_INTERVAL:
1352                         di->di_interval = 0;
1353                         break;
1354
1355                 case DDS_TOLERANCE:
1356                         di->di_tolerance = 0;
1357                         break;
1358
1359                 case DDS_MAXDYNAMICOBJS:
1360                         di->di_max_dynamicObjects = 0;
1361                         break;
1362
1363                 default:
1364                         rc = 1;
1365                         break;
1366                 }
1367
1368                 return rc;
1369         }
1370
1371         switch ( c->type ) {
1372         case DDS_STATE:
1373                 if ( c->value_int ) {
1374                         di->di_flags &= ~DDS_FOFF;
1375
1376                 } else {
1377                         di->di_flags |= DDS_FOFF;
1378                 }
1379                 break;
1380
1381         case DDS_MAXTTL:
1382                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1383                         snprintf( c->cr_msg, sizeof( c->cr_msg),
1384                                 "DDS unable to parse dds-max-ttl \"%s\"",
1385                                 c->argv[ 1 ] );
1386                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1387                                 "%s: %s.\n", c->log, c->cr_msg );
1388                         return 1;
1389                 }
1390
1391                 if ( t < DDS_RF2589_DEFAULT_TTL || t > DDS_RF2589_MAX_TTL ) {
1392                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1393                                 "DDS invalid dds-max-ttl=%lu; must be between %d and %d",
1394                                 t, DDS_RF2589_DEFAULT_TTL, DDS_RF2589_MAX_TTL );
1395                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1396                                 "%s: %s.\n", c->log, c->cr_msg );
1397                         return 1;
1398                 }
1399
1400                 di->di_max_ttl = (time_t)t;
1401                 break;
1402
1403         case DDS_MINTTL:
1404                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1405                         snprintf( c->cr_msg, sizeof( c->cr_msg),
1406                                 "DDS unable to parse dds-min-ttl \"%s\"",
1407                                 c->argv[ 1 ] );
1408                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1409                                 "%s: %s.\n", c->log, c->cr_msg );
1410                         return 1;
1411                 }
1412
1413                 if ( t > DDS_RF2589_MAX_TTL ) {
1414                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1415                                 "DDS invalid dds-min-ttl=%lu",
1416                                 t );
1417                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1418                                 "%s: %s.\n", c->log, c->cr_msg );
1419                         return 1;
1420                 }
1421
1422                 if ( t == 0 ) {
1423                         di->di_min_ttl = DDS_RF2589_DEFAULT_TTL;
1424
1425                 } else {
1426                         di->di_min_ttl = (time_t)t;
1427                 }
1428                 break;
1429
1430         case DDS_DEFAULTTTL:
1431                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1432                         snprintf( c->cr_msg, sizeof( c->cr_msg),
1433                                 "DDS unable to parse dds-default-ttl \"%s\"",
1434                                 c->argv[ 1 ] );
1435                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1436                                 "%s: %s.\n", c->log, c->cr_msg );
1437                         return 1;
1438                 }
1439
1440                 if ( t > DDS_RF2589_MAX_TTL ) {
1441                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1442                                 "DDS invalid dds-default-ttl=%lu",
1443                                 t );
1444                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1445                                 "%s: %s.\n", c->log, c->cr_msg );
1446                         return 1;
1447                 }
1448
1449                 if ( t == 0 ) {
1450                         di->di_default_ttl = DDS_RF2589_DEFAULT_TTL;
1451
1452                 } else {
1453                         di->di_default_ttl = (time_t)t;
1454                 }
1455                 break;
1456
1457         case DDS_INTERVAL:
1458                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1459                         snprintf( c->cr_msg, sizeof( c->cr_msg),
1460                                 "DDS unable to parse dds-interval \"%s\"",
1461                                 c->argv[ 1 ] );
1462                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1463                                 "%s: %s.\n", c->log, c->cr_msg );
1464                         return 1;
1465                 }
1466
1467                 if ( t <= 0 ) {
1468                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1469                                 "DDS invalid dds-interval=%lu",
1470                                 t );
1471                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1472                                 "%s: %s.\n", c->log, c->cr_msg );
1473                         return 1;
1474                 }
1475
1476                 if ( t < 60 ) {
1477                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_NOTICE,
1478                                 "%s: dds-interval=%lu may be too small.\n",
1479                                 c->log, t );
1480                 }
1481
1482                 di->di_interval = (time_t)t;
1483                 if ( di->di_expire_task ) {
1484                         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1485                         if ( ldap_pvt_runqueue_isrunning( &slapd_rq, di->di_expire_task ) ) {
1486                                 ldap_pvt_runqueue_stoptask( &slapd_rq, di->di_expire_task );
1487                         }
1488                         di->di_expire_task->interval.tv_sec = DDS_INTERVAL( di );
1489                         ldap_pvt_runqueue_resched( &slapd_rq, di->di_expire_task, 0 );
1490                         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1491                 }
1492                 break;
1493
1494         case DDS_TOLERANCE:
1495                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1496                         snprintf( c->cr_msg, sizeof( c->cr_msg),
1497                                 "DDS unable to parse dds-tolerance \"%s\"",
1498                                 c->argv[ 1 ] );
1499                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1500                                 "%s: %s.\n", c->log, c->cr_msg );
1501                         return 1;
1502                 }
1503
1504                 if ( t > DDS_RF2589_MAX_TTL ) {
1505                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1506                                 "DDS invalid dds-tolerance=%lu",
1507                                 t );
1508                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1509                                 "%s: %s.\n", c->log, c->cr_msg );
1510                         return 1;
1511                 }
1512
1513                 di->di_tolerance = (time_t)t;
1514                 break;
1515
1516         case DDS_MAXDYNAMICOBJS:
1517                 if ( c->value_int < 0 ) {
1518                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1519                                 "DDS invalid dds-max-dynamicObjects=%d", c->value_int );
1520                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1521                                 "%s: %s.\n", c->log, c->cr_msg );
1522                         return 1;
1523                 }
1524                 di->di_max_dynamicObjects = c->value_int;
1525                 break;
1526
1527         default:
1528                 rc = 1;
1529                 break;
1530         }
1531
1532         return rc;
1533 }
1534
1535 static int
1536 dds_db_init(
1537         BackendDB       *be,
1538         ConfigReply     *cr)
1539 {
1540         slap_overinst   *on = (slap_overinst *)be->bd_info;
1541         dds_info_t      *di;
1542         BackendInfo     *bi = on->on_info->oi_orig;
1543
1544         if ( SLAP_ISGLOBALOVERLAY( be ) ) {
1545                 Log0( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1546                         "DDS cannot be used as global overlay.\n" );
1547                 return 1;
1548         }
1549
1550         /* check support for required functions */
1551         /* FIXME: some could be provided by other overlays in between */
1552         if ( bi->bi_op_add == NULL                      /* object creation */
1553                 || bi->bi_op_delete == NULL             /* object deletion */
1554                 || bi->bi_op_modify == NULL             /* object refresh */
1555                 || bi->bi_op_search == NULL             /* object expiration */
1556                 || bi->bi_entry_get_rw == NULL )        /* object type/existence checking */
1557         {
1558                 Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1559                         "DDS backend \"%s\" does not provide "
1560                         "required functionality.\n",
1561                         bi->bi_type );
1562                 return 1;
1563         }
1564
1565         di = (dds_info_t *)ch_calloc( 1, sizeof( dds_info_t ) );
1566         on->on_bi.bi_private = di;
1567
1568         di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1569         di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1570
1571         ldap_pvt_thread_mutex_init( &di->di_mutex );
1572
1573         SLAP_DBFLAGS( be ) |= SLAP_DBFLAG_DYNAMIC;
1574
1575         return 0;
1576 }
1577
1578 /* adds dynamicSubtrees to root DSE */
1579 static int
1580 dds_entry_info( void *arg, Entry *e )
1581 {
1582         dds_info_t      *di = (dds_info_t *)arg;
1583
1584         attr_merge( e, slap_schema.si_ad_dynamicSubtrees,
1585                 di->di_suffix, di->di_nsuffix );
1586
1587         return 0;
1588 }
1589
1590 /* callback that counts the returned entries, since the search
1591  * does not get to the point in slap_send_search_entries where
1592  * the actual count occurs */
1593 static int
1594 dds_count_cb( Operation *op, SlapReply *rs )
1595 {
1596         int     *nump = (int *)op->o_callback->sc_private;
1597
1598         switch ( rs->sr_type ) {
1599         case REP_SEARCH:
1600                 (*nump)++;
1601                 break;
1602
1603         case REP_SEARCHREF:
1604         case REP_RESULT:
1605                 break;
1606
1607         default:
1608                 assert( 0 );
1609         }
1610
1611         return 0;
1612 }
1613
1614 /* count dynamic objects existing in the database at startup */
1615 static int
1616 dds_count( void *ctx, BackendDB *be )
1617 {
1618         slap_overinst   *on = (slap_overinst *)be->bd_info;
1619         dds_info_t      *di = (dds_info_t *)on->on_bi.bi_private;
1620
1621         Connection      conn = { 0 };
1622         OperationBuffer opbuf;
1623         Operation       *op;
1624         slap_callback   sc = { 0 };
1625         SlapReply       rs = { REP_RESULT };
1626
1627         int             rc;
1628         char            *extra = "";
1629
1630         connection_fake_init2( &conn, &opbuf, ctx, 0 );
1631         op = &opbuf.ob_op;
1632
1633         op->o_tag = LDAP_REQ_SEARCH;
1634         memset( &op->oq_search, 0, sizeof( op->oq_search ) );
1635
1636         op->o_bd = be;
1637
1638         op->o_req_dn = op->o_bd->be_suffix[ 0 ];
1639         op->o_req_ndn = op->o_bd->be_nsuffix[ 0 ];
1640
1641         op->o_dn = op->o_bd->be_rootdn;
1642         op->o_ndn = op->o_bd->be_rootndn;
1643
1644         op->ors_scope = LDAP_SCOPE_SUBTREE;
1645         op->ors_tlimit = SLAP_NO_LIMIT;
1646         op->ors_slimit = SLAP_NO_LIMIT;
1647         op->ors_attrs = slap_anlist_no_attrs;
1648
1649         op->ors_filterstr.bv_len = STRLENOF( "(objectClass=" ")" )
1650                 + slap_schema.si_oc_dynamicObject->soc_cname.bv_len;
1651         op->ors_filterstr.bv_val = op->o_tmpalloc( op->ors_filterstr.bv_len + 1, op->o_tmpmemctx );
1652         snprintf( op->ors_filterstr.bv_val, op->ors_filterstr.bv_len + 1,
1653                 "(objectClass=%s)",
1654                 slap_schema.si_oc_dynamicObject->soc_cname.bv_val );
1655
1656         op->ors_filter = str2filter_x( op, op->ors_filterstr.bv_val );
1657         if ( op->ors_filter == NULL ) {
1658                 rs.sr_err = LDAP_OTHER;
1659                 goto done_search;
1660         }
1661
1662         op->o_callback = &sc;
1663         sc.sc_response = dds_count_cb;
1664         sc.sc_private = &di->di_num_dynamicObjects;
1665         di->di_num_dynamicObjects = 0;
1666
1667         op->o_bd->bd_info = (BackendInfo *)on->on_info;
1668         (void)op->o_bd->bd_info->bi_op_search( op, &rs );
1669         op->o_bd->bd_info = (BackendInfo *)on;
1670
1671 done_search:;
1672         op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
1673         filter_free_x( op, op->ors_filter, 1 );
1674
1675         rc = rs.sr_err;
1676         switch ( rs.sr_err ) {
1677         case LDAP_SUCCESS:
1678                 Log1( LDAP_DEBUG_STATS, LDAP_LEVEL_INFO,
1679                         "DDS non-expired=%d\n",
1680                         di->di_num_dynamicObjects );
1681                 break;
1682
1683         case LDAP_NO_SUCH_OBJECT:
1684                 /* (ITS#5267) database not created yet? */
1685                 rs.sr_err = LDAP_SUCCESS;
1686                 extra = " (ignored)";
1687                 /* fallthru */
1688
1689         default:
1690                 Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1691                         "DDS non-expired objects lookup failed err=%d%s\n",
1692                         rc, extra );
1693                 break;
1694         }
1695
1696         return rs.sr_err;
1697 }
1698
1699 static int
1700 dds_db_open(
1701         BackendDB       *be,
1702         ConfigReply     *cr )
1703 {
1704         slap_overinst   *on = (slap_overinst *)be->bd_info;
1705         dds_info_t      *di = on->on_bi.bi_private;
1706         int             rc = 0;
1707         void            *thrctx = ldap_pvt_thread_pool_context();
1708
1709         if ( DDS_OFF( di ) ) {
1710                 goto done;
1711         }
1712
1713         if ( SLAP_SINGLE_SHADOW( be ) ) {
1714                 Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1715                         "DDS incompatible with shadow database \"%s\".\n",
1716                         be->be_suffix[ 0 ].bv_val );
1717                 return 1;
1718         }
1719
1720         if ( di->di_max_ttl == 0 ) {
1721                 di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1722         }
1723
1724         if ( di->di_min_ttl == 0 ) {
1725                 di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1726         }
1727
1728         di->di_suffix = be->be_suffix;
1729         di->di_nsuffix = be->be_nsuffix;
1730
1731         /* ... so that count, if required, is accurate */
1732         if ( di->di_max_dynamicObjects > 0 ) {
1733                 /* force deletion of expired entries... */
1734                 be->bd_info = (BackendInfo *)on->on_info;
1735                 rc = dds_expire( thrctx, di );
1736                 be->bd_info = (BackendInfo *)on;
1737                 if ( rc != LDAP_SUCCESS ) {
1738                         rc = 1;
1739                         goto done;
1740                 }
1741
1742                 rc = dds_count( thrctx, be );
1743                 if ( rc != LDAP_SUCCESS ) {
1744                         rc = 1;
1745                         goto done;
1746                 }
1747         }
1748
1749         /* start expire task */
1750         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1751         di->di_expire_task = ldap_pvt_runqueue_insert( &slapd_rq,
1752                 DDS_INTERVAL( di ),
1753                 dds_expire_fn, di, "dds_expire_fn",
1754                 be->be_suffix[ 0 ].bv_val );
1755         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1756
1757         /* register dinamicSubtrees root DSE info support */
1758         rc = entry_info_register( dds_entry_info, (void *)di );
1759
1760 done:;
1761
1762         return rc;
1763 }
1764
1765 static int
1766 dds_db_close(
1767         BackendDB       *be,
1768         ConfigReply     *cr )
1769 {
1770         slap_overinst   *on = (slap_overinst *)be->bd_info;
1771         dds_info_t      *di = on->on_bi.bi_private;
1772
1773         /* stop expire task */
1774         if ( di && di->di_expire_task ) {
1775                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1776                 if ( ldap_pvt_runqueue_isrunning( &slapd_rq, di->di_expire_task ) ) {
1777                         ldap_pvt_runqueue_stoptask( &slapd_rq, di->di_expire_task );
1778                 }
1779                 ldap_pvt_runqueue_remove( &slapd_rq, di->di_expire_task );
1780                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1781         }
1782
1783         (void)entry_info_unregister( dds_entry_info, (void *)di );
1784
1785         return 0;
1786 }
1787
1788 static int
1789 dds_db_destroy(
1790         BackendDB       *be,
1791         ConfigReply     *cr )
1792 {
1793         slap_overinst   *on = (slap_overinst *)be->bd_info;
1794         dds_info_t      *di = on->on_bi.bi_private;
1795
1796         if ( di != NULL ) {
1797                 ldap_pvt_thread_mutex_destroy( &di->di_mutex );
1798
1799                 free( di );
1800         }
1801
1802         return 0;
1803 }
1804
1805 static int
1806 slap_exop_refresh(
1807                 Operation       *op,
1808                 SlapReply       *rs )
1809 {
1810         BackendDB               *bd = op->o_bd;
1811
1812         rs->sr_err = slap_parse_refresh( op->ore_reqdata, &op->o_req_ndn, NULL,
1813                 &rs->sr_text, op->o_tmpmemctx );
1814         if ( rs->sr_err != LDAP_SUCCESS ) {
1815                 return rs->sr_err;
1816         }
1817
1818         Log2( LDAP_DEBUG_STATS, LDAP_LEVEL_INFO,
1819                 "%s REFRESH dn=\"%s\"\n",
1820                 op->o_log_prefix, op->o_req_ndn.bv_val );
1821         op->o_req_dn = op->o_req_ndn;
1822
1823         op->o_bd = select_backend( &op->o_req_ndn, 0 );
1824         if ( op->o_bd == NULL ) {
1825                 send_ldap_error( op, rs, LDAP_NO_SUCH_OBJECT,
1826                         "no global superior knowledge" );
1827                 goto done;
1828         }
1829
1830         if ( !SLAP_DYNAMIC( op->o_bd ) ) {
1831                 send_ldap_error( op, rs, LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
1832                         "backend does not support dynamic directory services" );
1833                 goto done;
1834         }
1835
1836         rs->sr_err = backend_check_restrictions( op, rs,
1837                 (struct berval *)&slap_EXOP_REFRESH );
1838         if ( rs->sr_err != LDAP_SUCCESS ) {
1839                 goto done;
1840         }
1841
1842         if ( op->o_bd->be_extended == NULL ) {
1843                 send_ldap_error( op, rs, LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
1844                         "backend does not support extended operations" );
1845                 goto done;
1846         }
1847
1848         op->o_bd->be_extended( op, rs );
1849
1850 done:;
1851         if ( !BER_BVISNULL( &op->o_req_ndn ) ) {
1852                 op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
1853                 BER_BVZERO( &op->o_req_ndn );
1854                 BER_BVZERO( &op->o_req_dn );
1855         }
1856         op->o_bd = bd;
1857
1858         return rs->sr_err;
1859 }
1860
1861 static slap_overinst dds;
1862
1863 static int do_not_load_exop;
1864 static int do_not_replace_exop;
1865 static int do_not_load_schema;
1866
1867 #if SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC
1868 static
1869 #endif /* SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC */
1870 int
1871 dds_initialize()
1872 {
1873         int             rc = 0;
1874         int             i, code;
1875
1876         /* Make sure we don't exceed the bits reserved for userland */
1877         config_check_userland( DDS_LAST );
1878
1879         if ( !do_not_load_schema ) {
1880                 static struct {
1881                         char                    *desc;
1882                         slap_mask_t             flags;
1883                         AttributeDescription    **ad;
1884                 }               s_at[] = {
1885                         { "( 1.3.6.1.4.1.4203.666.1.57 "
1886                                 "NAME ( 'entryExpireTimestamp' ) "
1887                                 "DESC 'RFC2589 OpenLDAP extension: expire time of a dynamic object, "
1888                                         "computed as now + entryTtl' "
1889                                 "EQUALITY generalizedTimeMatch "
1890                                 "ORDERING generalizedTimeOrderingMatch "
1891                                 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
1892                                 "SINGLE-VALUE "
1893                                 "NO-USER-MODIFICATION "
1894                                 "USAGE dSAOperation )",
1895                                 SLAP_AT_HIDE,
1896                                 &ad_entryExpireTimestamp },
1897                         { NULL }
1898                 };
1899
1900                 for ( i = 0; s_at[ i ].desc != NULL; i++ ) {
1901                         code = register_at( s_at[ i ].desc, s_at[ i ].ad, 0 );
1902                         if ( code ) {
1903                                 Debug( LDAP_DEBUG_ANY,
1904                                         "dds_initialize: register_at failed\n", 0, 0, 0 );
1905                                 return code;
1906                         }
1907                         (*s_at[ i ].ad)->ad_type->sat_flags |= SLAP_AT_HIDE;
1908                 }
1909         }
1910
1911         if ( !do_not_load_exop ) {
1912                 rc = load_extop2( (struct berval *)&slap_EXOP_REFRESH,
1913                         SLAP_EXOP_WRITES|SLAP_EXOP_HIDE, slap_exop_refresh,
1914                         !do_not_replace_exop );
1915                 if ( rc != LDAP_SUCCESS ) {
1916                         Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1917                                 "DDS unable to register refresh exop: %d.\n",
1918                                 rc );
1919                         return rc;
1920                 }
1921         }
1922
1923         dds.on_bi.bi_type = "dds";
1924
1925         dds.on_bi.bi_db_init = dds_db_init;
1926         dds.on_bi.bi_db_open = dds_db_open;
1927         dds.on_bi.bi_db_close = dds_db_close;
1928         dds.on_bi.bi_db_destroy = dds_db_destroy;
1929
1930         dds.on_bi.bi_op_add = dds_op_add;
1931         dds.on_bi.bi_op_delete = dds_op_delete;
1932         dds.on_bi.bi_op_modify = dds_op_modify;
1933         dds.on_bi.bi_op_modrdn = dds_op_rename;
1934         dds.on_bi.bi_extended = dds_op_extended;
1935
1936         dds.on_bi.bi_cf_ocs = dds_ocs;
1937
1938         rc = config_register_schema( dds_cfg, dds_ocs );
1939         if ( rc ) {
1940                 return rc;
1941         }
1942
1943         return overlay_register( &dds );
1944 }
1945
1946 #if SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC
1947 int
1948 init_module( int argc, char *argv[] )
1949 {
1950         int     i;
1951
1952         for ( i = 0; i < argc; i++ ) {
1953                 char    *arg = argv[ i ];
1954                 int     no = 0;
1955
1956                 if ( strncasecmp( arg, "no-", STRLENOF( "no-" ) ) == 0 ) {
1957                         arg += STRLENOF( "no-" );
1958                         no = 1;
1959                 }
1960
1961                 if ( strcasecmp( arg, "exop" ) == 0 ) {
1962                         do_not_load_exop = no;
1963
1964                 } else if ( strcasecmp( arg, "replace" ) == 0 ) {
1965                         do_not_replace_exop = no;
1966
1967                 } else if ( strcasecmp( arg, "schema" ) == 0 ) {
1968                         do_not_load_schema = no;
1969
1970                 } else {
1971                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1972                                 "DDS unknown module arg[#%d]=\"%s\".\n",
1973                                 i, argv[ i ] );
1974                         return 1;
1975                 }
1976         }
1977
1978         return dds_initialize();
1979 }
1980 #endif /* SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC */
1981
1982 #endif  /* defined(SLAPD_OVER_DDS) */