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 2005-2006 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 }, sc2 = { 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         op = (Operation *)&opbuf;
 138         connection_fake_init( &conn, op, ctx );
 139
 140         op->o_tag = LDAP_REQ_SEARCH;
 141         memset( &op->oq_search, 0, sizeof( op->oq_search ) );
 142
 143         op->o_bd = select_backend( &di->di_nsuffix[ 0 ], 0, 0 );
 144
 145         op->o_req_dn = op->o_bd->be_suffix[ 0 ];
 146         op->o_req_ndn = op->o_bd->be_nsuffix[ 0 ];
 147
 148         op->o_dn = op->o_bd->be_rootdn;
 149         op->o_ndn = op->o_bd->be_rootndn;
 150
 151         op->ors_scope = LDAP_SCOPE_SUBTREE;
 152         op->ors_tlimit = DDS_INTERVAL( di )/2 + 1;
 153         op->ors_slimit = SLAP_NO_LIMIT;
 154         op->ors_attrs = slap_anlist_no_attrs;
 155
 156         expire = slap_get_time() + di->di_tolerance;
 157         ts.bv_val = tsbuf;
 158         ts.bv_len = sizeof( tsbuf );
 159         slap_timestamp( &expire, &ts );
 160
 161         op->ors_filterstr.bv_len = STRLENOF( "(&(objectClass=" ")(" "<=" "))" )
 162                 + slap_schema.si_oc_dynamicObject->soc_cname.bv_len
 163                 + ad_entryExpireTimestamp->ad_cname.bv_len
 164                 + ts.bv_len;
 165         op->ors_filterstr.bv_val = op->o_tmpalloc( op->ors_filterstr.bv_len + 1, op->o_tmpmemctx );
 166         snprintf( op->ors_filterstr.bv_val, op->ors_filterstr.bv_len + 1,
 167                 "(&(objectClass=%s)(%s<=%s))",
 168                 slap_schema.si_oc_dynamicObject->soc_cname.bv_val,
 169                 ad_entryExpireTimestamp->ad_cname.bv_val, ts.bv_val );
 170
 171         op->ors_filter = str2filter_x( op, op->ors_filterstr.bv_val );
 172         if ( op->ors_filter == NULL ) {
 173                 rs.sr_err = LDAP_OTHER;
 174                 goto done_search;
 175         }
 176
 177         op->o_callback = &sc;
 178         sc.sc_response = dds_expire_cb;
 179         sc.sc_private = &dc;
 180
 181         (void)op->o_bd->bd_info->bi_op_search( op, &rs );
 182
 183 done_search:;
 184         op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
 185         filter_free_x( op, op->ors_filter );
 186
 187         if ( rs.sr_err != LDAP_SUCCESS ) {
 188                 Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
 189                         "DDS expired objects lookup failed err=%d\n",
 190                         rs.sr_err );
 191                 goto done;
 192         }
 193
 194         op->o_tag = LDAP_REQ_DELETE;
 195         op->o_callback = &sc;
 196         sc.sc_response = slap_replog_cb;
 197         sc.sc_private = NULL;
 198         sc.sc_next = &sc2;
 199         sc2.sc_response = slap_null_cb;
 200
 201         for ( ntotdeletes = 0, ndeletes = 1; dc.dc_ndnlist != NULL  && ndeletes > 0; ) {
 202                 ndeletes = 0;
 203
 204                 for ( dep = &dc.dc_ndnlist; *dep != NULL; ) {
 205                         de = *dep;
 206
 207                         op->o_req_dn = de->de_ndn;
 208                         op->o_req_ndn = de->de_ndn;
 209                         (void)op->o_bd->bd_info->bi_op_delete( op, &rs );
 210                         switch ( rs.sr_err ) {
 211                         case LDAP_SUCCESS:
 212                                 Log1( LDAP_DEBUG_STATS, LDAP_LEVEL_INFO,
 213                                         "DDS dn=\"%s\" expired.\n",
 214                                         de->de_ndn.bv_val );
 215                                 ndeletes++;
 216                                 break;
 217
 218                         case LDAP_NOT_ALLOWED_ON_NONLEAF:
 219                                 Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_NOTICE,
 220                                         "DDS dn=\"%s\" is non-leaf; "
 221                                         "deferring.\n",
 222                                         de->de_ndn.bv_val );
 223                                 dep = &de->de_next;
 224                                 de = NULL;
 225                                 break;
 226
 227                         default:
 228                                 Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_NOTICE,
 229                                         "DDS dn=\"%s\" err=%d; "
 230                                         "deferring.\n",
 231                                         de->de_ndn.bv_val, rs.sr_err );
 232                                 break;
 233                         }
 234
 235                         if ( de != NULL ) {
 236                                 *dep = de->de_next;
 237                                 dep = &de->de_next;
 238                                 op->o_tmpfree( de, op->o_tmpmemctx );
 239                         }
 240                 }
 241
 242                 ntotdeletes += ndeletes;
 243         }
 244
 245         rs.sr_err = LDAP_SUCCESS;
 246
 247         Log1( LDAP_DEBUG_STATS, LDAP_LEVEL_INFO,
 248                 "DDS expired=%d\n", ntotdeletes );
 249
 250 done:;
 251         return rs.sr_err;
 252 }
 253
 254 static void *
 255 dds_expire_fn( void *ctx, void *arg )
 256 {
 257         struct re_s     *rtask = arg;
 258         dds_info_t      *di = rtask->arg;
 259
 260         assert( di->di_expire_task == rtask );
 261
 262         (void)dds_expire( ctx, di );
 263
 264         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 265         if ( ldap_pvt_runqueue_isrunning( &slapd_rq, rtask )) {
 266                 ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
 267         }
 268         ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
 269         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 270
 271         return NULL;
 272 }
 273
 274 /* frees the callback */
 275 static int
 276 dds_freeit_cb( Operation *op, SlapReply *rs )
 277 {
 278         op->o_tmpfree( op->o_callback, op->o_tmpmemctx );
 279         op->o_callback = NULL;
 280
 281         return SLAP_CB_CONTINUE;
 282 }
 283
 284 /* updates counter - installed on add/delete only if required */
 285 static int
 286 dds_counter_cb( Operation *op, SlapReply *rs )
 287 {
 288         assert( rs->sr_type == REP_RESULT );
 289
 290         if ( rs->sr_err == LDAP_SUCCESS ) {
 291                 dds_info_t      *di = op->o_callback->sc_private;
 292
 293                 ldap_pvt_thread_mutex_lock( &di->di_mutex );
 294                 switch ( op->o_tag ) {
 295                 case LDAP_REQ_DELETE:
 296                         assert( di->di_num_dynamicObjects > 0 );
 297                         di->di_num_dynamicObjects--;
 298                         break;
 299
 300                 case LDAP_REQ_ADD:
 301                         assert( di->di_num_dynamicObjects < di->di_max_dynamicObjects );
 302                         di->di_num_dynamicObjects++;
 303                         break;
 304
 305                 default:
 306                         assert( 0 );
 307                 }
 308                 ldap_pvt_thread_mutex_unlock( &di->di_mutex );
 309         }
 310
 311         return dds_freeit_cb( op, rs );
 312 }
 313
 314 static int
 315 dds_op_add( Operation *op, SlapReply *rs )
 316 {
 317         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 318         dds_info_t      *di = on->on_bi.bi_private;
 319         int             is_dynamicObject;
 320
 321         if ( DDS_OFF( di ) ) {
 322                 return SLAP_CB_CONTINUE;
 323         }
 324
 325         is_dynamicObject = is_entry_dynamicObject( op->ora_e );
 326
 327         /* FIXME: do not allow this right now, pending clarification */
 328         if ( is_dynamicObject ) {
 329                 rs->sr_err = LDAP_SUCCESS;
 330
 331                 if ( is_entry_referral( op->ora_e ) ) {
 332                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 333                         rs->sr_text = "a referral cannot be a dynamicObject";
 334
 335                 } else if ( is_entry_alias( op->ora_e ) ) {
 336                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 337                         rs->sr_text = "an alias cannot be a dynamicObject";
 338                 }
 339
 340                 if ( rs->sr_err != LDAP_SUCCESS ) {
 341                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 342                         send_ldap_result( op, rs );
 343                         return rs->sr_err;
 344                 }
 345         }
 346
 347         /* we don't allow dynamicObjects to have static subordinates */
 348         if ( !dn_match( &op->o_req_ndn, &op->o_bd->be_nsuffix[ 0 ] ) ) {
 349                 struct berval   p_ndn;
 350                 Entry           *e = NULL;
 351                 int             rc;
 352                 BackendInfo     *bi = op->o_bd->bd_info;
 353
 354                 dnParent( &op->o_req_ndn, &p_ndn );
 355                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 356                 rc = be_entry_get_rw( op, &p_ndn,
 357                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
 358                 if ( rc == LDAP_SUCCESS && e != NULL ) {
 359                         if ( !is_dynamicObject ) {
 360 #ifdef SLAP_ACL_HONOR_DISCLOSE
 361                                 /* return referral only if "disclose"
 362                                  * is granted on the object */
 363                                 if ( ! access_allowed( op, e,
 364                                                 slap_schema.si_ad_entry,
 365                                                 NULL, ACL_DISCLOSE, NULL ) )
 366                                 {
 367                                         rc = rs->sr_err = LDAP_NO_SUCH_OBJECT;
 368                                         send_ldap_result( op, rs );
 369
 370                                 } else
 371 #endif /* SLAP_ACL_HONOR_DISCLOSE */
 372                                 {
 373                                         rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 374                                         send_ldap_error( op, rs, rc, "no static subordinate entries allowed for dynamicObject" );
 375                                 }
 376                         }
 377
 378                         be_entry_release_r( op, e );
 379                         if ( rc != LDAP_SUCCESS ) {
 380                                 return rc;
 381                         }
 382                 }
 383                 op->o_bd->bd_info = bi;
 384         }
 385
 386         /* handle dynamic object operational attr(s) */
 387         if ( is_dynamicObject ) {
 388                 time_t          ttl, expire;
 389                 char            ttlbuf[] = "31557600";
 390                 char            tsbuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
 391                 struct berval   bv;
 392
 393                 if ( !be_isroot_dn( op->o_bd, &op->o_req_ndn ) ) {
 394                         ldap_pvt_thread_mutex_lock( &di->di_mutex );
 395                         rs->sr_err = ( di->di_max_dynamicObjects &&
 396                                 di->di_num_dynamicObjects >= di->di_max_dynamicObjects );
 397                         ldap_pvt_thread_mutex_unlock( &di->di_mutex );
 398                         if ( rs->sr_err ) {
 399                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 400                                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 401                                         "too many dynamicObjects in context" );
 402                                 return rs->sr_err;
 403                         }
 404                 }
 405
 406                 ttl = DDS_DEFAULT_TTL( di );
 407
 408                 assert( ttl <= DDS_RF2589_MAX_TTL );
 409
 410                 bv.bv_val = ttlbuf;
 411                 bv.bv_len = snprintf( ttlbuf, sizeof( ttlbuf ), "%ld", ttl );
 412
 413                 /* FIXME: apparently, values in op->ora_e are malloc'ed
 414                  * on the thread's slab; works fine by chance,
 415                  * only because the attribute doesn't exist yet. */
 416                 assert( attr_find( op->ora_e->e_attrs, slap_schema.si_ad_entryTtl ) == NULL );
 417                 attr_merge_one( op->ora_e, slap_schema.si_ad_entryTtl, &bv, &bv );
 418
 419                 expire = slap_get_time() + ttl;
 420                 bv.bv_val = tsbuf;
 421                 bv.bv_len = sizeof( tsbuf );
 422                 slap_timestamp( &expire, &bv );
 423                 assert( attr_find( op->ora_e->e_attrs, ad_entryExpireTimestamp ) == NULL );
 424                 attr_merge_one( op->ora_e, ad_entryExpireTimestamp, &bv, &bv );
 425
 426                 /* if required, install counter callback */
 427                 if ( di->di_max_dynamicObjects > 0) {
 428                         slap_callback   *sc;
 429
 430                         sc = op->o_tmpalloc( sizeof( slap_callback ), op->o_tmpmemctx );
 431                         sc->sc_cleanup = dds_freeit_cb;
 432                         sc->sc_response = dds_counter_cb;
 433                         sc->sc_private = di;
 434                         sc->sc_next = op->o_callback;
 435
 436                         op->o_callback = sc;
 437                 }
 438         }
 439
 440         return SLAP_CB_CONTINUE;
 441 }
 442
 443 static int
 444 dds_op_delete( Operation *op, SlapReply *rs )
 445 {
 446         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 447         dds_info_t      *di = on->on_bi.bi_private;
 448
 449         /* if required, install counter callback */
 450         if ( !DDS_OFF( di ) && di->di_max_dynamicObjects > 0 ) {
 451                 Entry           *e = NULL;
 452                 BackendInfo     *bi = op->o_bd->bd_info;
 453
 454                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 455                 rs->sr_err = be_entry_get_rw( op, &op->o_req_ndn,
 456                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
 457
 458                 /* FIXME: couldn't the entry be added before deletion? */
 459                 if ( rs->sr_err == LDAP_SUCCESS && e != NULL ) {
 460                         slap_callback   *sc;
 461
 462                         be_entry_release_r( op, e );
 463                         e = NULL;
 464
 465                         sc = op->o_tmpalloc( sizeof( slap_callback ), op->o_tmpmemctx );
 466                         sc->sc_cleanup = dds_freeit_cb;
 467                         sc->sc_response = dds_counter_cb;
 468                         sc->sc_private = di;
 469                         sc->sc_next = op->o_callback;
 470
 471                         op->o_callback = sc;
 472                 }
 473                 op->o_bd->bd_info = bi;
 474         }
 475
 476         return SLAP_CB_CONTINUE;
 477 }
 478
 479 static int
 480 dds_op_modify( Operation *op, SlapReply *rs )
 481 {
 482         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 483         dds_info_t      *di = (dds_info_t *)on->on_bi.bi_private;
 484         Modifications   *mod;
 485         Entry           *e = NULL;
 486         BackendInfo     *bi = op->o_bd->bd_info;
 487         int             was_dynamicObject = 0,
 488                         is_dynamicObject = 0;
 489         struct berval   bv_entryTtl = BER_BVNULL;
 490         time_t          entryTtl = 0;
 491         char            textbuf[ SLAP_TEXT_BUFLEN ];
 492
 493         if ( DDS_OFF( di ) ) {
 494                 return SLAP_CB_CONTINUE;
 495         }
 496
 497         /* bv_entryTtl stores the string representation of the entryTtl
 498          * across modifies for consistency checks of the final value;
 499          * the bv_val points to a static buffer; the bv_len is zero when
 500          * the attribute is deleted.
 501          * entryTtl stores the integer representation of the entryTtl;
 502          * its value is -1 when the attribute is deleted; it is 0 only
 503          * if no modifications of the entryTtl occurred, as an entryTtl
 504          * of 0 is invalid. */
 505         bv_entryTtl.bv_val = textbuf;
 506
 507         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 508         rs->sr_err = be_entry_get_rw( op, &op->o_req_ndn,
 509                 slap_schema.si_oc_dynamicObject, slap_schema.si_ad_entryTtl, 0, &e );
 510         if ( rs->sr_err == LDAP_SUCCESS && e != NULL ) {
 511                 Attribute       *a = attr_find( e->e_attrs, slap_schema.si_ad_entryTtl );
 512
 513                 /* the value of the entryTtl is saved for later checks */
 514                 if ( a != NULL ) {
 515                         unsigned long   ttl;
 516                         int             rc;
 517
 518                         bv_entryTtl.bv_len = a->a_nvals[ 0 ].bv_len;
 519                         AC_MEMCPY( bv_entryTtl.bv_val, a->a_nvals[ 0 ].bv_val, bv_entryTtl.bv_len );
 520                         bv_entryTtl.bv_val[ bv_entryTtl.bv_len ] = '\0';
 521                         rc = lutil_atoul( &ttl, bv_entryTtl.bv_val );
 522                         assert( rc == 0 );
 523                         entryTtl = (time_t)ttl;
 524                 }
 525
 526                 be_entry_release_r( op, e );
 527                 e = NULL;
 528                 was_dynamicObject = is_dynamicObject = 1;
 529         }
 530         op->o_bd->bd_info = bi;
 531
 532         rs->sr_err = LDAP_SUCCESS;
 533         for ( mod = op->orm_modlist; mod; mod = mod->sml_next ) {
 534                 if ( mod->sml_desc == slap_schema.si_ad_objectClass ) {
 535                         int             i;
 536                         ObjectClass     *oc;
 537
 538                         switch ( mod->sml_op ) {
 539                         case LDAP_MOD_DELETE:
 540                                 if ( mod->sml_values == NULL ) {
 541                                         is_dynamicObject = 0;
 542                                         break;
 543                                 }
 544
 545                                 for ( i = 0; !BER_BVISNULL( &mod->sml_values[ i ] ); i++ ) {
 546                                         oc = oc_bvfind( &mod->sml_values[ i ] );
 547                                         if ( oc == slap_schema.si_oc_dynamicObject ) {
 548                                                 is_dynamicObject = 0;
 549                                                 break;
 550                                         }
 551                                 }
 552
 553                                 break;
 554
 555                         case LDAP_MOD_REPLACE:
 556                                 if ( mod->sml_values == NULL ) {
 557                                         is_dynamicObject = 0;
 558                                         break;
 559                                 }
 560                                 /* fallthru */
 561
 562                         case LDAP_MOD_ADD:
 563                                 for ( i = 0; !BER_BVISNULL( &mod->sml_values[ i ] ); i++ ) {
 564                                         oc = oc_bvfind( &mod->sml_values[ i ] );
 565                                         if ( oc == slap_schema.si_oc_dynamicObject ) {
 566                                                 is_dynamicObject = 1;
 567                                                 break;
 568                                         }
 569                                 }
 570                                 break;
 571                         }
 572
 573                 } else if ( mod->sml_desc == slap_schema.si_ad_entryTtl ) {
 574                         unsigned long   ttl;
 575                         int             rc;
 576
 577                         switch ( mod->sml_op ) {
 578                         case LDAP_MOD_DELETE:
 579                                 if ( mod->sml_values != NULL ) {
 580                                         if ( BER_BVISEMPTY( &bv_entryTtl )
 581                                                 || !bvmatch( &bv_entryTtl, &mod->sml_values[ 0 ] ) )
 582                                         {
 583 #ifdef SLAP_ACL_HONOR_DISCLOSE
 584                                                 rs->sr_err = backend_attribute( op, NULL, &op->o_req_ndn,
 585                                                         slap_schema.si_ad_entry, NULL, ACL_DISCLOSE );
 586                                                 if ( rs->sr_err == LDAP_INSUFFICIENT_ACCESS ) {
 587                                                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 588
 589                                                 } else
 590 #endif /* SLAP_ACL_HONOR_DISCLOSE */
 591                                                 {
 592                                                         rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 593                                                 }
 594                                                 goto done;
 595                                         }
 596                                 }
 597                                 bv_entryTtl.bv_len = 0;
 598                                 entryTtl = -1;
 599                                 break;
 600
 601                         case LDAP_MOD_REPLACE:
 602                                 bv_entryTtl.bv_len = 0;
 603                                 entryTtl = -1;
 604                                 /* fallthru */
 605
 606                         case SLAP_MOD_SOFTADD: /* FIXME? */
 607                         case LDAP_MOD_ADD:
 608                                 assert( mod->sml_values != NULL );
 609                                 assert( BER_BVISNULL( &mod->sml_values[ 1 ] ) );
 610
 611                                 if ( !BER_BVISEMPTY( &bv_entryTtl ) ) {
 612 #ifdef SLAP_ACL_HONOR_DISCLOSE
 613                                         rs->sr_err = backend_attribute( op, NULL, &op->o_req_ndn,
 614                                                 slap_schema.si_ad_entry, NULL, ACL_DISCLOSE );
 615                                         if ( rs->sr_err == LDAP_INSUFFICIENT_ACCESS ) {
 616                                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
 617
 618                                         } else
 619 #endif /* SLAP_ACL_HONOR_DISCLOSE */
 620                                         {
 621                                                 rs->sr_text = "attribute 'entryTtl' cannot have multiple values";
 622                                                 rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 623                                         }
 624                                         goto done;
 625                                 }
 626
 627                                 rc = lutil_atoul( &ttl, mod->sml_values[ 0 ].bv_val );
 628                                 assert( rc == 0 );
 629                                 if ( ttl > DDS_RF2589_MAX_TTL ) {
 630                                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 631                                         rs->sr_text = "invalid time-to-live for dynamicObject";
 632                                         goto done;
 633                                 }
 634
 635                                 if ( ttl <= 0 || ttl > di->di_max_ttl ) {
 636                                         /* FIXME: I don't understand if this has to be an error,
 637                                          * or an indication that the requested Ttl has been
 638                                          * shortened to di->di_max_ttl >= 1 day */
 639                                         rs->sr_err = LDAP_SIZELIMIT_EXCEEDED;
 640                                         rs->sr_text = "time-to-live for dynamicObject exceeds administrative limit";
 641                                         goto done;
 642                                 }
 643
 644                                 entryTtl = (time_t)ttl;
 645                                 bv_entryTtl.bv_len = mod->sml_values[ 0 ].bv_len;
 646                                 AC_MEMCPY( bv_entryTtl.bv_val, mod->sml_values[ 0 ].bv_val, bv_entryTtl.bv_len );
 647                                 bv_entryTtl.bv_val[ bv_entryTtl.bv_len ] = '\0';
 648                                 break;
 649
 650                         case LDAP_MOD_INCREMENT:
 651                                 if ( BER_BVISEMPTY( &bv_entryTtl ) ) {
 652 #ifdef SLAP_ACL_HONOR_DISCLOSE
 653                                         rs->sr_err = backend_attribute( op, NULL, &op->o_req_ndn,
 654                                                 slap_schema.si_ad_entry, NULL, ACL_DISCLOSE );
 655                                         if ( rs->sr_err == LDAP_INSUFFICIENT_ACCESS ) {
 656                                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
 657
 658                                         } else
 659 #endif /* SLAP_ACL_HONOR_DISCLOSE */
 660                                         {
 661                                                 rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 662                                                 rs->sr_text = "modify/increment: entryTtl: no such attribute";
 663                                         }
 664                                         goto done;
 665                                 }
 666
 667                                 entryTtl++;
 668                                 if ( entryTtl > DDS_RF2589_MAX_TTL ) {
 669                                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 670                                         rs->sr_text = "invalid time-to-live for dynamicObject";
 671
 672                                 } else if ( entryTtl <= 0 || entryTtl > di->di_max_ttl ) {
 673                                         /* FIXME: I don't understand if this has to be an error,
 674                                          * or an indication that the requested Ttl has been
 675                                          * shortened to di->di_max_ttl >= 1 day */
 676                                         rs->sr_err = LDAP_SIZELIMIT_EXCEEDED;
 677                                         rs->sr_text = "time-to-live for dynamicObject exceeds administrative limit";
 678                                 }
 679
 680                                 if ( rs->sr_err != LDAP_SUCCESS ) {
 681 #ifdef SLAP_ACL_HONOR_DISCLOSE
 682                                         rc = backend_attribute( op, NULL, &op->o_req_ndn,
 683                                                 slap_schema.si_ad_entry, NULL, ACL_DISCLOSE );
 684                                         if ( rc == LDAP_INSUFFICIENT_ACCESS ) {
 685                                                 rs->sr_text = NULL;
 686                                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
 687
 688                                         }
 689 #endif /* SLAP_ACL_HONOR_DISCLOSE */
 690                                         goto done;
 691                                 }
 692
 693                                 bv_entryTtl.bv_len = snprintf( textbuf, sizeof( textbuf ), "%ld", entryTtl );
 694                                 break;
 695
 696                         default:
 697                                 assert( 0 );
 698                                 break;
 699                         }
 700
 701                 } else if ( mod->sml_desc == ad_entryExpireTimestamp ) {
 702                         /* should have been trapped earlier */
 703                         assert( mod->sml_flags & SLAP_MOD_INTERNAL );
 704                 }
 705         }
 706
 707 done:;
 708         if ( rs->sr_err == LDAP_SUCCESS ) {
 709                 int     rc;
 710
 711                 /* FIXME: this could be allowed when manageDIT is used...
 712                  * in that case:
 713                  *
 714                  * TODO
 715                  *
 716                  *      static => dynamic:
 717                  *              entryTtl must be provided; add
 718                  *              entryExpireTimestamp accordingly
 719                  *
 720                  *      dynamic => static:
 721                  *              entryTtl must be removed; remove
 722                  *              entryTimestamp accordingly
 723                  *
 724                  * ... but we need to make sure that there are no subordinate
 725                  * issues...
 726                  */
 727                 rc = is_dynamicObject - was_dynamicObject;
 728                 if ( rc ) {
 729 #if 0 /* fix subordinate issues first */
 730                         if ( get_manageDIT( op ) ) {
 731                                 switch ( rc ) {
 732                                 case -1:
 733                                         /* need to delete entryTtl to have a consistent entry */
 734                                         if ( entryTtl != -1 ) {
 735                                                 rs->sr_text = "objectClass modification from dynamicObject to static entry requires entryTtl deletion";
 736                                                 rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 737                                         }
 738                                         break;
 739
 740                                 case 1:
 741                                         /* need to add entryTtl to have a consistent entry */
 742                                         if ( entryTtl <= 0 ) {
 743                                                 rs->sr_text = "objectClass modification from static entry to dynamicObject requires entryTtl addition";
 744                                                 rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 745                                         }
 746                                         break;
 747                                 }
 748
 749                         } else
 750 #endif
 751                         {
 752                                 switch ( rc ) {
 753                                 case -1:
 754                                         rs->sr_text = "objectClass modification cannot turn dynamicObject into static entry";
 755                                         break;
 756
 757                                 case 1:
 758                                         rs->sr_text = "objectClass modification cannot turn static entry into dynamicObject";
 759                                         break;
 760                                 }
 761                                 rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 762                         }
 763
 764 #ifdef SLAP_ACL_HONOR_DISCLOSE
 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 #endif /* SLAP_ACL_HONOR_DISCLOSE */
 774                 }
 775         }
 776
 777         if ( rs->sr_err == LDAP_SUCCESS && entryTtl != 0 ) {
 778                 Modifications   *tmpmod = NULL, **modp;
 779
 780                 for ( modp = &op->orm_modlist; *modp; modp = &(*modp)->sml_next )
 781                         ;
 782
 783                 tmpmod = ch_calloc( 1, sizeof( Modifications ) );
 784                 tmpmod->sml_flags = SLAP_MOD_INTERNAL;
 785                 tmpmod->sml_type = ad_entryExpireTimestamp->ad_cname;
 786                 tmpmod->sml_desc = ad_entryExpireTimestamp;
 787
 788                 *modp = tmpmod;
 789
 790                 if ( entryTtl == -1 ) {
 791                         /* delete entryExpireTimestamp */
 792                         tmpmod->sml_op = LDAP_MOD_DELETE;
 793
 794                 } else {
 795                         time_t          expire;
 796                         char            tsbuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
 797                         struct berval   bv;
 798
 799                         /* keep entryExpireTimestamp consistent
 800                          * with entryTtl */
 801                         expire = slap_get_time() + entryTtl;
 802                         bv.bv_val = tsbuf;
 803                         bv.bv_len = sizeof( tsbuf );
 804                         slap_timestamp( &expire, &bv );
 805
 806                         tmpmod->sml_op = LDAP_MOD_REPLACE;
 807                         value_add_one( &tmpmod->sml_values, &bv );
 808                 }
 809         }
 810
 811         if ( rs->sr_err ) {
 812                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 813                 send_ldap_result( op, rs );
 814                 return rs->sr_err;
 815         }
 816
 817         return SLAP_CB_CONTINUE;
 818 }
 819
 820 static int
 821 dds_op_rename( Operation *op, SlapReply *rs )
 822 {
 823         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 824         dds_info_t      *di = on->on_bi.bi_private;
 825
 826         if ( DDS_OFF( di ) ) {
 827                 return SLAP_CB_CONTINUE;
 828         }
 829
 830         /* we don't allow dynamicObjects to have static subordinates */
 831         if ( op->orr_nnewSup != NULL ) {
 832                 Entry           *e = NULL;
 833                 BackendInfo     *bi = op->o_bd->bd_info;
 834                 int             is_dynamicObject = 0,
 835                                 rc;
 836
 837                 rs->sr_err = LDAP_SUCCESS;
 838
 839                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 840                 rc = be_entry_get_rw( op, &op->o_req_ndn,
 841                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
 842                 if ( rc == LDAP_SUCCESS && e != NULL ) {
 843                         be_entry_release_r( op, e );
 844                         e = NULL;
 845                         is_dynamicObject = 1;
 846                 }
 847
 848                 rc = be_entry_get_rw( op, op->orr_nnewSup,
 849                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
 850                 if ( rc == LDAP_SUCCESS && e != NULL ) {
 851                         if ( !is_dynamicObject ) {
 852 #ifdef SLAP_ACL_HONOR_DISCLOSE
 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 #endif /* SLAP_ACL_HONOR_DISCLOSE */
 864                                 {
 865                                         send_ldap_error( op, rs, LDAP_CONSTRAINT_VIOLATION,
 866                                                 "static entry cannot have dynamicObject as newSuperior" );
 867                                 }
 868                         }
 869                         be_entry_release_r( op, e );
 870                 }
 871                 op->o_bd->bd_info = bi;
 872                 if ( rs->sr_err != LDAP_SUCCESS ) {
 873                         return rs->sr_err;
 874                 }
 875         }
 876
 877         return SLAP_CB_CONTINUE;
 878 }
 879
 880 static int
 881 slap_parse_refresh(
 882         struct berval   *in,
 883         struct berval   *ndn,
 884         time_t          *ttl,
 885         const char      **text,
 886         void            *ctx )
 887 {
 888         int                     rc = LDAP_SUCCESS;
 889         ber_tag_t               tag;
 890         ber_len_t               len = -1;
 891         BerElementBuffer        berbuf;
 892         BerElement              *ber = (BerElement *)&berbuf;
 893         struct berval           reqdata = BER_BVNULL;
 894         int                     tmp;
 895
 896         *text = NULL;
 897
 898         if ( ndn ) {
 899                 BER_BVZERO( ndn );
 900         }
 901
 902         if ( in == NULL || in->bv_len == 0 ) {
 903                 *text = "empty request data field in refresh exop";
 904                 return LDAP_PROTOCOL_ERROR;
 905         }
 906
 907         ber_dupbv_x( &reqdata, in, ctx );
 908
 909         /* ber_init2 uses reqdata directly, doesn't allocate new buffers */
 910         ber_init2( ber, &reqdata, 0 );
 911
 912         tag = ber_scanf( ber, "{" /*}*/ );
 913
 914         if ( tag == LBER_ERROR ) {
 915                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 916                         "slap_parse_refresh: decoding error.\n" );
 917                 goto decoding_error;
 918         }
 919
 920         tag = ber_peek_tag( ber, &len );
 921         if ( tag != LDAP_TAG_EXOP_REFRESH_REQ_DN ) {
 922                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 923                         "slap_parse_refresh: decoding error.\n" );
 924                 goto decoding_error;
 925         }
 926
 927         if ( ndn ) {
 928                 struct berval   dn;
 929
 930                 tag = ber_scanf( ber, "m", &dn );
 931                 if ( tag == LBER_ERROR ) {
 932                         Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 933                                 "slap_parse_refresh: DN parse failed.\n" );
 934                         goto decoding_error;
 935                 }
 936
 937                 rc = dnNormalize( 0, NULL, NULL, &dn, ndn, ctx );
 938                 if ( rc != LDAP_SUCCESS ) {
 939                         *text = "invalid DN in refresh exop request data";
 940                         goto done;
 941                 }
 942
 943         } else {
 944                 tag = ber_scanf( ber, "x" /* "m" */ );
 945                 if ( tag == LBER_DEFAULT ) {
 946                         goto decoding_error;
 947                 }
 948         }
 949
 950         tag = ber_peek_tag( ber, &len );
 951
 952         if ( tag != LDAP_TAG_EXOP_REFRESH_REQ_TTL ) {
 953                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 954                         "slap_parse_refresh: decoding error.\n" );
 955                 goto decoding_error;
 956         }
 957
 958         tag = ber_scanf( ber, "i", &tmp );
 959         if ( tag == LBER_ERROR ) {
 960                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 961                         "slap_parse_refresh: TTL parse failed.\n" );
 962                 goto decoding_error;
 963         }
 964
 965         if ( ttl ) {
 966                 *ttl = tmp;
 967         }
 968
 969         tag = ber_peek_tag( ber, &len );
 970
 971         if ( len != 0 ) {
 972 decoding_error:;
 973                 Log1( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 974                         "slap_parse_refresh: decoding error, len=%ld\n",
 975                         (long)len );
 976                 rc = LDAP_PROTOCOL_ERROR;
 977                 *text = "data decoding error";
 978
 979 done:;
 980                 if ( ndn && !BER_BVISNULL( ndn ) ) {
 981                         slap_sl_free( ndn->bv_val, ctx );
 982                         BER_BVZERO( ndn );
 983                 }
 984         }
 985
 986         if ( !BER_BVISNULL( &reqdata ) ) {
 987                 ber_memfree_x( reqdata.bv_val, ctx );
 988         }
 989
 990         return rc;
 991 }
 992
 993 static int
 994 dds_op_extended( Operation *op, SlapReply *rs )
 995 {
 996         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 997         dds_info_t      *di = on->on_bi.bi_private;
 998
 999         if ( DDS_OFF( di ) ) {
1000                 return SLAP_CB_CONTINUE;
1001         }
1002
1003         if ( bvmatch( &op->ore_reqoid, &slap_EXOP_REFRESH ) ) {
1004                 Entry           *e = NULL;
1005                 time_t          ttl;
1006                 BackendDB       db = *op->o_bd;
1007                 SlapReply       rs2 = { REP_RESULT };
1008                 Operation       op2 = *op;
1009                 slap_callback   sc = { 0 };
1010                 slap_callback   sc2 = { 0 };
1011                 Modifications   ttlmod = { { 0 } };
1012                 struct berval   ttlvalues[ 2 ];
1013                 char            ttlbuf[] = "31557600";
1014
1015                 rs->sr_err = slap_parse_refresh( op->ore_reqdata, NULL, &ttl,
1016                         &rs->sr_text, NULL );
1017                 assert( rs->sr_err == LDAP_SUCCESS );
1018
1019                 if ( ttl <= 0 || ttl > DDS_RF2589_MAX_TTL ) {
1020                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1021                         rs->sr_text = "invalid time-to-live for dynamicObject";
1022                         return rs->sr_err;
1023                 }
1024
1025                 if ( ttl > di->di_max_ttl ) {
1026                         /* FIXME: I don't understand if this has to be an error,
1027                          * or an indication that the requested Ttl has been
1028                          * shortened to di->di_max_ttl >= 1 day */
1029                         rs->sr_err = LDAP_SIZELIMIT_EXCEEDED;
1030                         rs->sr_text = "time-to-live for dynamicObject exceeds limit";
1031                         return rs->sr_err;
1032                 }
1033
1034                 if ( di->di_min_ttl && ttl < di->di_min_ttl ) {
1035                         ttl = di->di_min_ttl;
1036                 }
1037
1038 #ifndef SLAPD_MULTIMASTER
1039                 /* This does not apply to multi-master case */
1040                 if ( !( !SLAP_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 #endif /* !SLAPD_MULTIMASTER */
1063
1064                 assert( !BER_BVISNULL( &op->o_req_ndn ) );
1065
1066
1067
1068                 /* check if exists but not dynamicObject */
1069                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1070                 rs->sr_err = be_entry_get_rw( op, &op->o_req_ndn,
1071                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
1072                 if ( rs->sr_err != LDAP_SUCCESS ) {
1073                         rs->sr_err = be_entry_get_rw( op, &op->o_req_ndn,
1074                                 NULL, NULL, 0, &e );
1075                         if ( rs->sr_err == LDAP_SUCCESS && e != NULL ) {
1076 #ifdef SLAP_ACL_HONOR_DISCLOSE
1077                                 /* return referral only if "disclose"
1078                                  * is granted on the object */
1079                                 if ( ! access_allowed( op, e,
1080                                                 slap_schema.si_ad_entry,
1081                                                 NULL, ACL_DISCLOSE, NULL ) )
1082                                 {
1083                                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
1084
1085                                 } else
1086 #endif /* SLAP_ACL_HONOR_DISCLOSE */
1087                                 {
1088                                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
1089                                         rs->sr_text = "refresh operation only applies to dynamic objects";
1090                                 }
1091                                 be_entry_release_r( op, e );
1092
1093                         } else {
1094                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
1095                         }
1096                         return rs->sr_err;
1097
1098                 } else if ( e != NULL ) {
1099                         be_entry_release_r( op, e );
1100                 }
1101
1102                 /* we require manage privileges on the entryTtl,
1103                  * and fake a manageDIT control */
1104                 op2.o_tag = LDAP_REQ_MODIFY;
1105                 op2.o_bd = &db;
1106                 db.bd_info = (BackendInfo *)on->on_info;
1107                 op2.o_callback = &sc;
1108                 sc.sc_response = slap_replog_cb;
1109                 sc.sc_next = &sc2;
1110                 sc2.sc_response = slap_null_cb;
1111                 op2.o_managedit = SLAP_CONTROL_CRITICAL;
1112                 op2.orm_modlist = &ttlmod;
1113
1114                 ttlmod.sml_op = LDAP_MOD_REPLACE;
1115                 ttlmod.sml_flags = SLAP_MOD_MANAGING;
1116                 ttlmod.sml_desc = slap_schema.si_ad_entryTtl;
1117                 ttlmod.sml_values = ttlvalues;
1118                 ttlvalues[ 0 ].bv_val = ttlbuf;
1119                 ttlvalues[ 0 ].bv_len = snprintf( ttlbuf, sizeof( ttlbuf ), "%ld", ttl );
1120                 BER_BVZERO( &ttlvalues[ 1 ] );
1121
1122                 /* the entryExpireTimestamp is added by modify */
1123                 rs->sr_err = op2.o_bd->be_modify( &op2, &rs2 );
1124
1125                 if ( ttlmod.sml_next != NULL ) {
1126                         slap_mods_free( ttlmod.sml_next, 1 );
1127                 }
1128
1129                 if ( rs->sr_err == LDAP_SUCCESS ) {
1130                         int                     rc;
1131                         BerElementBuffer        berbuf;
1132                         BerElement              *ber = (BerElement *)&berbuf;
1133
1134                         if ( rs->sr_err == LDAP_SUCCESS ) {
1135                                 ber_init_w_nullc( ber, LBER_USE_DER );
1136
1137                                 rc = ber_printf( ber, "{tiN}", LDAP_TAG_EXOP_REFRESH_RES_TTL, (int)ttl );
1138
1139                                 if ( rc < 0 ) {
1140                                         rs->sr_err = LDAP_OTHER;
1141                                         rs->sr_text = "internal error";
1142
1143                                 } else {
1144                                         (void)ber_flatten( ber, &rs->sr_rspdata );
1145                                         rs->sr_rspoid = ch_strdup( slap_EXOP_REFRESH.bv_val );
1146
1147                                         Log3( LDAP_DEBUG_TRACE, LDAP_LEVEL_INFO,
1148                                                 "%s REFRESH dn=\"%s\" TTL=%ld\n",
1149                                                 op->o_log_prefix, op->o_req_ndn.bv_val, ttl );
1150                                 }
1151
1152                                 ber_free_buf( ber );
1153                         }
1154                 }
1155
1156                 return rs->sr_err;
1157         }
1158
1159         return SLAP_CB_CONTINUE;
1160 }
1161
1162 enum {
1163         DDS_STATE = 1,
1164         DDS_MAXTTL,
1165         DDS_MINTTL,
1166         DDS_DEFAULTTTL,
1167         DDS_INTERVAL,
1168         DDS_TOLERANCE,
1169         DDS_MAXDYNAMICOBJS,
1170
1171         DDS_LAST
1172 };
1173
1174 static ConfigDriver dds_cfgen;
1175 #if 0
1176 static ConfigLDAPadd dds_ldadd;
1177 static ConfigCfAdd dds_cfadd;
1178 #endif
1179
1180 static ConfigTable dds_cfg[] = {
1181         { "dds-state", "on|off",
1182                 2, 2, 0, ARG_MAGIC|ARG_ON_OFF|DDS_STATE, dds_cfgen,
1183                 "( OLcfgOvAt:9.1 NAME 'olcDDSstate' "
1184                         "DESC 'RFC2589 Dynamic directory services state' "
1185                         "SYNTAX OMsBoolean "
1186                         "SINGLE-VALUE )", NULL, NULL },
1187         { "dds-max-ttl", "ttl",
1188                 2, 2, 0, ARG_MAGIC|DDS_MAXTTL, dds_cfgen,
1189                 "( OLcfgOvAt:9.2 NAME 'olcDDSmaxTtl' "
1190                         "DESC 'RFC2589 Dynamic directory services max TTL' "
1191                         "SYNTAX OMsDirectoryString "
1192                         "SINGLE-VALUE )", NULL, NULL },
1193         { "dds-min-ttl", "ttl",
1194                 2, 2, 0, ARG_MAGIC|DDS_MINTTL, dds_cfgen,
1195                 "( OLcfgOvAt:9.3 NAME 'olcDDSminTtl' "
1196                         "DESC 'RFC2589 Dynamic directory services min TTL' "
1197                         "SYNTAX OMsDirectoryString "
1198                         "SINGLE-VALUE )", NULL, NULL },
1199         { "dds-default-ttl", "ttl",
1200                 2, 2, 0, ARG_MAGIC|DDS_DEFAULTTTL, dds_cfgen,
1201                 "( OLcfgOvAt:9.4 NAME 'olcDDSdefaultTtl' "
1202                         "DESC 'RFC2589 Dynamic directory services default TTL' "
1203                         "SYNTAX OMsDirectoryString "
1204                         "SINGLE-VALUE )", NULL, NULL },
1205         { "dds-interval", "interval",
1206                 2, 2, 0, ARG_MAGIC|DDS_INTERVAL, dds_cfgen,
1207                 "( OLcfgOvAt:9.5 NAME 'olcDDSinterval' "
1208                         "DESC 'RFC2589 Dynamic directory services expiration "
1209                                 "task run interval' "
1210                         "SYNTAX OMsDirectoryString "
1211                         "SINGLE-VALUE )", NULL, NULL },
1212         { "dds-tolerance", "ttl",
1213                 2, 2, 0, ARG_MAGIC|DDS_TOLERANCE, dds_cfgen,
1214                 "( OLcfgOvAt:9.6 NAME 'olcDDStolerance' "
1215                         "DESC 'RFC2589 Dynamic directory services additional "
1216                                 "TTL in expiration scheduling' "
1217                         "SYNTAX OMsDirectoryString "
1218                         "SINGLE-VALUE )", NULL, NULL },
1219         { "dds-max-dynamicObjects", "num",
1220                 2, 2, 0, ARG_MAGIC|ARG_INT|DDS_MAXDYNAMICOBJS, dds_cfgen,
1221                 "( OLcfgOvAt:9.7 NAME 'olcDDSmaxDynamicObjects' "
1222                         "DESC 'RFC2589 Dynamic directory services max number of dynamic objects' "
1223                         "SYNTAX OMsInteger "
1224                         "SINGLE-VALUE )", NULL, NULL },
1225         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
1226 };
1227
1228 static ConfigOCs dds_ocs[] = {
1229         { "( OLcfgOvOc:9.1 "
1230                 "NAME 'olcDDSConfig' "
1231                 "DESC 'RFC2589 Dynamic directory services configuration' "
1232                 "SUP olcOverlayConfig "
1233                 "MAY ( "
1234                         "olcDDSstate "
1235                         "$ olcDDSmaxTtl "
1236                         "$ olcDDSminTtl "
1237                         "$ olcDDSdefaultTtl "
1238                         "$ olcDDSinterval "
1239                         "$ olcDDStolerance "
1240                         "$ olcDDSmaxDynamicObjects "
1241                 " ) "
1242                 ")", Cft_Overlay, dds_cfg, NULL, NULL /* dds_cfadd */ },
1243         { NULL, 0, NULL }
1244 };
1245
1246 #if 0
1247 static int
1248 dds_ldadd( CfEntryInfo *p, Entry *e, ConfigArgs *ca )
1249 {
1250         return LDAP_SUCCESS;
1251 }
1252
1253 static int
1254 dds_cfadd( Operation *op, SlapReply *rs, Entry *p, ConfigArgs *ca )
1255 {
1256         return 0;
1257 }
1258 #endif
1259
1260 static int
1261 dds_cfgen( ConfigArgs *c )
1262 {
1263         slap_overinst   *on = (slap_overinst *)c->bi;
1264         dds_info_t      *di = on->on_bi.bi_private;
1265         int             rc = 0;
1266         unsigned long   t;
1267
1268
1269         if ( c->op == SLAP_CONFIG_EMIT ) {
1270                 char            buf[ SLAP_TEXT_BUFLEN ];
1271                 struct berval   bv;
1272
1273                 switch( c->type ) {
1274                 case DDS_STATE:
1275                         c->value_int = !DDS_OFF( di );
1276                         break;
1277
1278                 case DDS_MAXTTL:
1279                         lutil_unparse_time( buf, sizeof( buf ), di->di_max_ttl );
1280                         ber_str2bv( buf, 0, 0, &bv );
1281                         value_add_one( &c->rvalue_vals, &bv );
1282                         break;
1283
1284                 case DDS_MINTTL:
1285                         if ( di->di_min_ttl ) {
1286                                 lutil_unparse_time( buf, sizeof( buf ), di->di_min_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_DEFAULTTTL:
1296                         if ( di->di_default_ttl ) {
1297                                 lutil_unparse_time( buf, sizeof( buf ), di->di_default_ttl );
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_INTERVAL:
1307                         if ( di->di_interval ) {
1308                                 lutil_unparse_time( buf, sizeof( buf ), di->di_interval );
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_TOLERANCE:
1318                         if ( di->di_tolerance ) {
1319                                 lutil_unparse_time( buf, sizeof( buf ), di->di_tolerance );
1320                                 ber_str2bv( buf, 0, 0, &bv );
1321                                 value_add_one( &c->rvalue_vals, &bv );
1322
1323                         } else {
1324                                 rc = 1;
1325                         }
1326                         break;
1327
1328                 case DDS_MAXDYNAMICOBJS:
1329                         if ( di->di_max_dynamicObjects > 0 ) {
1330                                 c->value_int = di->di_max_dynamicObjects;
1331
1332                         } else {
1333                                 rc = 1;
1334                         }
1335                         break;
1336
1337                 default:
1338                         rc = 1;
1339                         break;
1340                 }
1341
1342                 return rc;
1343
1344         } else if ( c->op == LDAP_MOD_DELETE ) {
1345                 switch( c->type ) {
1346                 case DDS_STATE:
1347                         di->di_flags &= ~DDS_FOFF;
1348                         break;
1349
1350                 case DDS_MAXTTL:
1351                         di->di_min_ttl = DDS_RF2589_DEFAULT_TTL;
1352                         break;
1353
1354                 case DDS_MINTTL:
1355                         di->di_min_ttl = 0;
1356                         break;
1357
1358                 case DDS_DEFAULTTTL:
1359                         di->di_default_ttl = 0;
1360                         break;
1361
1362                 case DDS_INTERVAL:
1363                         di->di_interval = 0;
1364                         break;
1365
1366                 case DDS_TOLERANCE:
1367                         di->di_tolerance = 0;
1368                         break;
1369
1370                 case DDS_MAXDYNAMICOBJS:
1371                         di->di_max_dynamicObjects = 0;
1372                         break;
1373
1374                 default:
1375                         rc = 1;
1376                         break;
1377                 }
1378
1379                 return rc;
1380         }
1381
1382         switch ( c->type ) {
1383         case DDS_STATE:
1384                 if ( c->value_int ) {
1385                         di->di_flags &= ~DDS_FOFF;
1386
1387                 } else {
1388                         di->di_flags |= DDS_FOFF;
1389                 }
1390                 break;
1391
1392         case DDS_MAXTTL:
1393                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1394                         snprintf( c->msg, sizeof( c->msg),
1395                                 "DDS unable to parse dds-max-ttl \"%s\"",
1396                                 c->argv[ 1 ] );
1397                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1398                                 "%s: %s.\n", c->log, c->msg );
1399                         return 1;
1400                 }
1401
1402                 if ( t < DDS_RF2589_DEFAULT_TTL || t > DDS_RF2589_MAX_TTL ) {
1403                         snprintf( c->msg, sizeof( c->msg ),
1404                                 "DDS invalid dds-max-ttl=%ld; must be between %d and %d",
1405                                 t, DDS_RF2589_DEFAULT_TTL, DDS_RF2589_MAX_TTL );
1406                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1407                                 "%s: %s.\n", c->log, c->msg );
1408                         return 1;
1409                 }
1410
1411                 di->di_max_ttl = (time_t)t;
1412                 break;
1413
1414         case DDS_MINTTL:
1415                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1416                         snprintf( c->msg, sizeof( c->msg),
1417                                 "DDS unable to parse dds-min-ttl \"%s\"",
1418                                 c->argv[ 1 ] );
1419                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1420                                 "%s: %s.\n", c->log, c->msg );
1421                         return 1;
1422                 }
1423
1424                 if ( t < 0 || t > DDS_RF2589_MAX_TTL ) {
1425                         snprintf( c->msg, sizeof( c->msg ),
1426                                 "DDS invalid dds-min-ttl=%ld",
1427                                 t );
1428                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1429                                 "%s: %s.\n", c->log, c->msg );
1430                         return 1;
1431                 }
1432
1433                 if ( t == 0 ) {
1434                         di->di_min_ttl = DDS_RF2589_DEFAULT_TTL;
1435
1436                 } else {
1437                         di->di_min_ttl = (time_t)t;
1438                 }
1439                 break;
1440
1441         case DDS_DEFAULTTTL:
1442                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1443                         snprintf( c->msg, sizeof( c->msg),
1444                                 "DDS unable to parse dds-default-ttl \"%s\"",
1445                                 c->argv[ 1 ] );
1446                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1447                                 "%s: %s.\n", c->log, c->msg );
1448                         return 1;
1449                 }
1450
1451                 if ( t < 0 || t > DDS_RF2589_MAX_TTL ) {
1452                         snprintf( c->msg, sizeof( c->msg ),
1453                                 "DDS invalid dds-default-ttl=%ld",
1454                                 t );
1455                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1456                                 "%s: %s.\n", c->log, c->msg );
1457                         return 1;
1458                 }
1459
1460                 if ( t == 0 ) {
1461                         di->di_default_ttl = DDS_RF2589_DEFAULT_TTL;
1462
1463                 } else {
1464                         di->di_default_ttl = (time_t)t;
1465                 }
1466                 break;
1467
1468         case DDS_INTERVAL:
1469                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1470                         snprintf( c->msg, sizeof( c->msg),
1471                                 "DDS unable to parse dds-interval \"%s\"",
1472                                 c->argv[ 1 ] );
1473                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1474                                 "%s: %s.\n", c->log, c->msg );
1475                         return 1;
1476                 }
1477
1478                 if ( t <= 0 ) {
1479                         snprintf( c->msg, sizeof( c->msg ),
1480                                 "DDS invalid dds-interval=%ld",
1481                                 t );
1482                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1483                                 "%s: %s.\n", c->log, c->msg );
1484                         return 1;
1485                 }
1486
1487                 if ( t < 60 ) {
1488                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_NOTICE,
1489                                 "%s: dds-interval=%lu may be too small.\n",
1490                                 c->log, t );
1491                 }
1492
1493                 di->di_interval = (time_t)t;
1494                 if ( di->di_expire_task ) {
1495                         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1496                         if ( ldap_pvt_runqueue_isrunning( &slapd_rq, di->di_expire_task ) ) {
1497                                 ldap_pvt_runqueue_stoptask( &slapd_rq, di->di_expire_task );
1498                         }
1499                         di->di_expire_task->interval.tv_sec = DDS_INTERVAL( di );
1500                         ldap_pvt_runqueue_resched( &slapd_rq, di->di_expire_task, 0 );
1501                         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1502                 }
1503                 break;
1504
1505         case DDS_TOLERANCE:
1506                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1507                         snprintf( c->msg, sizeof( c->msg),
1508                                 "DDS unable to parse dds-tolerance \"%s\"",
1509                                 c->argv[ 1 ] );
1510                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1511                                 "%s: %s.\n", c->log, c->msg );
1512                         return 1;
1513                 }
1514
1515                 if ( t < 0 || t > DDS_RF2589_MAX_TTL ) {
1516                         snprintf( c->msg, sizeof( c->msg ),
1517                                 "DDS invalid dds-tolerance=%ld",
1518                                 t );
1519                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1520                                 "%s: %s.\n", c->log, c->msg );
1521                         return 1;
1522                 }
1523
1524                 di->di_tolerance = (time_t)t;
1525                 break;
1526
1527         case DDS_MAXDYNAMICOBJS:
1528                 if ( c->value_int < 0 ) {
1529                         snprintf( c->msg, sizeof( c->msg ),
1530                                 "DDS invalid dds-max-dynamicObjects=%d", c->value_int );
1531                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1532                                 "%s: %s.\n", c->log, c->msg );
1533                         return 1;
1534                 }
1535                 di->di_max_dynamicObjects = c->value_int;
1536                 break;
1537
1538         default:
1539                 rc = 1;
1540                 break;
1541         }
1542
1543         return rc;
1544 }
1545
1546 static int
1547 dds_db_init(
1548         BackendDB       *be )
1549 {
1550         slap_overinst   *on = (slap_overinst *)be->bd_info;
1551         dds_info_t      *di;
1552         BackendInfo     *bi = on->on_info->oi_orig;
1553
1554         if ( SLAP_ISGLOBALOVERLAY( be ) ) {
1555                 Log0( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1556                         "DDS cannot be used as global overlay.\n" );
1557                 return 1;
1558         }
1559
1560         /* check support for required functions */
1561         /* FIXME: some could be provided by other overlays in between */
1562         if ( bi->bi_op_add == NULL                      /* object creation */
1563                 || bi->bi_op_delete == NULL             /* object deletion */
1564                 || bi->bi_op_modify == NULL             /* object refresh */
1565                 || bi->bi_op_search == NULL             /* object expiration */
1566                 || bi->bi_entry_get_rw == NULL )        /* object type/existence checking */
1567         {
1568                 Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1569                         "DDS backend \"%s\" does not provide "
1570                         "required functionality.\n",
1571                         bi->bi_type );
1572                 return 1;
1573         }
1574
1575         di = (dds_info_t *)ch_calloc( 1, sizeof( dds_info_t ) );
1576         on->on_bi.bi_private = di;
1577
1578         di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1579         di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1580
1581         ldap_pvt_thread_mutex_init( &di->di_mutex );
1582
1583         SLAP_DBFLAGS( be ) |= SLAP_DBFLAG_DYNAMIC;
1584
1585         return 0;
1586 }
1587
1588 /* adds dynamicSubtrees to root DSE */
1589 static int
1590 dds_entry_info( void *arg, Entry *e )
1591 {
1592         dds_info_t      *di = (dds_info_t *)arg;
1593
1594         attr_merge( e, slap_schema.si_ad_dynamicSubtrees,
1595                 di->di_suffix, di->di_nsuffix );
1596
1597         return 0;
1598 }
1599
1600 /* callback that counts the returned entries, since the search
1601  * does not get to the point in slap_send_search_entries where
1602  * the actual count occurs */
1603 static int
1604 dds_count_cb( Operation *op, SlapReply *rs )
1605 {
1606         int     *nump = (int *)op->o_callback->sc_private;
1607
1608         switch ( rs->sr_type ) {
1609         case REP_SEARCH:
1610                 (*nump)++;
1611                 break;
1612
1613         case REP_SEARCHREF:
1614         case REP_RESULT:
1615                 break;
1616
1617         default:
1618                 assert( 0 );
1619         }
1620
1621         return 0;
1622 }
1623
1624 /* count dynamic objects existing in the database at startup */
1625 static int
1626 dds_count( void *ctx, BackendDB *be )
1627 {
1628         slap_overinst   *on = (slap_overinst *)be->bd_info;
1629         dds_info_t      *di = (dds_info_t *)on->on_bi.bi_private;
1630
1631         Connection      conn = { 0 };
1632         OperationBuffer opbuf;
1633         Operation       *op;
1634         slap_callback   sc = { 0 };
1635         SlapReply       rs = { REP_RESULT };
1636
1637         op = (Operation *)&opbuf;
1638         connection_fake_init( &conn, op, ctx );
1639
1640         op->o_tag = LDAP_REQ_SEARCH;
1641         memset( &op->oq_search, 0, sizeof( op->oq_search ) );
1642
1643         op->o_bd = be;
1644
1645         op->o_req_dn = op->o_bd->be_suffix[ 0 ];
1646         op->o_req_ndn = op->o_bd->be_nsuffix[ 0 ];
1647
1648         op->o_dn = op->o_bd->be_rootdn;
1649         op->o_ndn = op->o_bd->be_rootndn;
1650
1651         op->ors_scope = LDAP_SCOPE_SUBTREE;
1652         op->ors_tlimit = SLAP_NO_LIMIT;
1653         op->ors_slimit = SLAP_NO_LIMIT;
1654         op->ors_attrs = slap_anlist_no_attrs;
1655
1656         op->ors_filterstr.bv_len = STRLENOF( "(objectClass=" ")" )
1657                 + slap_schema.si_oc_dynamicObject->soc_cname.bv_len;
1658         op->ors_filterstr.bv_val = op->o_tmpalloc( op->ors_filterstr.bv_len + 1, op->o_tmpmemctx );
1659         snprintf( op->ors_filterstr.bv_val, op->ors_filterstr.bv_len + 1,
1660                 "(objectClass=%s)",
1661                 slap_schema.si_oc_dynamicObject->soc_cname.bv_val );
1662
1663         op->ors_filter = str2filter_x( op, op->ors_filterstr.bv_val );
1664         if ( op->ors_filter == NULL ) {
1665                 rs.sr_err = LDAP_OTHER;
1666                 goto done_search;
1667         }
1668
1669         op->o_callback = &sc;
1670         sc.sc_response = dds_count_cb;
1671         sc.sc_private = &di->di_num_dynamicObjects;
1672
1673         op->o_bd->bd_info = (BackendInfo *)on->on_info;
1674         (void)op->o_bd->bd_info->bi_op_search( op, &rs );
1675         op->o_bd->bd_info = (BackendInfo *)on;
1676
1677 done_search:;
1678         op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
1679         filter_free_x( op, op->ors_filter );
1680
1681         if ( rs.sr_err == LDAP_SUCCESS ) {
1682                 Log1( LDAP_DEBUG_STATS, LDAP_LEVEL_INFO,
1683                         "DDS non-expired=%d\n",
1684                         di->di_num_dynamicObjects );
1685
1686         } else {
1687                 Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1688                         "DDS non-expired objects lookup failed err=%d\n",
1689                         rs.sr_err );
1690         }
1691
1692         return rs.sr_err;
1693 }
1694
1695 static int
1696 dds_db_open(
1697         BackendDB       *be )
1698 {
1699         slap_overinst   *on = (slap_overinst *)be->bd_info;
1700         dds_info_t      *di = on->on_bi.bi_private;
1701         int             rc = 0;
1702         void            *thrctx = ldap_pvt_thread_pool_context();
1703
1704         if ( DDS_OFF( di ) ) {
1705                 goto done;
1706         }
1707
1708 #ifndef SLAPD_MULTIMASTER
1709         if ( SLAP_SHADOW( be ) ) {
1710                 Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1711                         "DDS incompatible with shadow database \"%s\".\n",
1712                         be->be_suffix[ 0 ].bv_val );
1713                 return 1;
1714         }
1715 #endif /* ! SLAPD_MULTIMASTER */
1716
1717         if ( di->di_max_ttl == 0 ) {
1718                 di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1719         }
1720
1721         if ( di->di_min_ttl == 0 ) {
1722                 di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1723         }
1724
1725         di->di_suffix = be->be_suffix;
1726         di->di_nsuffix = be->be_nsuffix;
1727
1728         /* ... so that count, if required, is accurate */
1729         if ( di->di_max_dynamicObjects > 0 ) {
1730                 /* force deletion of expired entries... */
1731                 be->bd_info = (BackendInfo *)on->on_info;
1732                 rc = dds_expire( thrctx, di );
1733                 be->bd_info = (BackendInfo *)on;
1734                 if ( rc != LDAP_SUCCESS ) {
1735                         rc = 1;
1736                         goto done;
1737                 }
1738
1739                 rc = dds_count( thrctx, be );
1740                 if ( rc != LDAP_SUCCESS ) {
1741                         rc = 1;
1742                         goto done;
1743                 }
1744         }
1745
1746         /* start expire task */
1747         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1748         di->di_expire_task = ldap_pvt_runqueue_insert( &slapd_rq,
1749                 DDS_INTERVAL( di ),
1750                 dds_expire_fn, di, "dds_expire_fn",
1751                 be->be_suffix[ 0 ].bv_val );
1752         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1753
1754         /* register dinamicSubtrees root DSE info support */
1755         rc = entry_info_register( dds_entry_info, (void *)di );
1756
1757 done:;
1758         ldap_pvt_thread_pool_context_reset( thrctx );
1759
1760         return rc;
1761 }
1762
1763 static int
1764 dds_db_close(
1765         BackendDB       *be )
1766 {
1767         slap_overinst   *on = (slap_overinst *)be->bd_info;
1768         dds_info_t      *di = on->on_bi.bi_private;
1769
1770         /* stop expire task */
1771         if ( di && di->di_expire_task ) {
1772                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1773                 if ( ldap_pvt_runqueue_isrunning( &slapd_rq, di->di_expire_task ) ) {
1774                         ldap_pvt_runqueue_stoptask( &slapd_rq, di->di_expire_task );
1775                 }
1776                 ldap_pvt_runqueue_remove( &slapd_rq, di->di_expire_task );
1777                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
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 {
1789         slap_overinst   *on = (slap_overinst *)be->bd_info;
1790         dds_info_t      *di = on->on_bi.bi_private;
1791
1792         if ( di != NULL ) {
1793                 ldap_pvt_thread_mutex_destroy( &di->di_mutex );
1794
1795                 free( di );
1796         }
1797
1798         return 0;
1799 }
1800
1801 static int
1802 slap_exop_refresh(
1803                 Operation       *op,
1804                 SlapReply       *rs )
1805 {
1806         BackendDB               *bd = op->o_bd;
1807
1808         rs->sr_err = slap_parse_refresh( op->ore_reqdata, &op->o_req_ndn, NULL,
1809                 &rs->sr_text, op->o_tmpmemctx );
1810         if ( rs->sr_err != LDAP_SUCCESS ) {
1811                 return rs->sr_err;
1812         }
1813
1814         Log2( LDAP_DEBUG_STATS, LDAP_LEVEL_INFO,
1815                 "%s REFRESH dn=\"%s\"\n",
1816                 op->o_log_prefix, op->o_req_ndn.bv_val );
1817         op->o_req_dn = op->o_req_ndn;
1818
1819         op->o_bd = select_backend( &op->o_req_ndn, 0, 0 );
1820         if ( !SLAP_DYNAMIC( op->o_bd ) ) {
1821                 send_ldap_error( op, rs, LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
1822                         "backend does not support dynamic directory services" );
1823                 goto done;
1824         }
1825
1826         rs->sr_err = backend_check_restrictions( op, rs,
1827                 (struct berval *)&slap_EXOP_REFRESH );
1828         if ( rs->sr_err != LDAP_SUCCESS ) {
1829                 goto done;
1830         }
1831
1832         if ( op->o_bd->be_extended == NULL ) {
1833                 send_ldap_error( op, rs, LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
1834                         "backend does not support extended operations" );
1835                 goto done;
1836         }
1837
1838         op->o_bd->be_extended( op, rs );
1839
1840 done:;
1841         if ( !BER_BVISNULL( &op->o_req_ndn ) ) {
1842                 op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
1843                 BER_BVZERO( &op->o_req_ndn );
1844                 BER_BVZERO( &op->o_req_dn );
1845         }
1846         op->o_bd = bd;
1847
1848         return rs->sr_err;
1849 }
1850
1851 static slap_overinst dds;
1852
1853 static int do_not_load_exop;
1854 static int do_not_replace_exop;
1855 static int do_not_load_schema;
1856
1857 #if SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC
1858 static
1859 #endif /* SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC */
1860 int
1861 dds_initialize()
1862 {
1863         int             rc = 0;
1864         int             i, code;
1865         const char      *err;
1866
1867         /* Make sure we don't exceed the bits reserved for userland */
1868         config_check_userland( DDS_LAST );
1869
1870         if ( !do_not_load_schema ) {
1871                 static struct {
1872                         char                    *name;
1873                         char                    *desc;
1874                         AttributeDescription    **ad;
1875                 }               s_at[] = {
1876                         { "entryExpireTimestamp", "( 1.3.6.1.4.1.4203.666.1.57 "
1877                                 "NAME ( 'entryExpireTimestamp' ) "
1878                                 "DESC 'RFC2589 OpenLDAP extension: expire time of a dynamic object, "
1879                                         "computed as now + entryTtl' "
1880                                 "EQUALITY generalizedTimeMatch "
1881                                 "ORDERING generalizedTimeOrderingMatch "
1882                                 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
1883                                 "SINGLE-VALUE "
1884                                 "NO-USER-MODIFICATION "
1885                                 "USAGE dSAOperation )",
1886                                 &ad_entryExpireTimestamp },
1887                         { NULL }
1888                 };
1889
1890                 for ( i = 0; s_at[ i ].name != NULL; i++ ) {
1891                         LDAPAttributeType       *at;
1892
1893                         at = ldap_str2attributetype( s_at[ i ].desc,
1894                                 &code, &err, LDAP_SCHEMA_ALLOW_ALL );
1895                         if ( !at ) {
1896                                 fprintf( stderr, "dds_initialize: "
1897                                         "AttributeType load failed: %s %s\n",
1898                                         ldap_scherr2str( code ), err );
1899                                 return code;
1900                         }
1901
1902                         code = at_add( at, 0, NULL, &err );
1903                         ldap_memfree( at );
1904                         if ( code != LDAP_SUCCESS ) {
1905                                 fprintf( stderr, "dds_initialize: "
1906                                         "AttributeType load failed: %s %s\n",
1907                                         scherr2str( code ), err );
1908                                 return code;
1909                         }
1910
1911                         code = slap_str2ad( s_at[ i ].name, s_at[ i ].ad, &err );
1912                         if ( code != LDAP_SUCCESS ) {
1913                                 fprintf( stderr, "dds_initialize: "
1914                                         "unable to find AttributeDescription "
1915                                         "\"%s\": %d (%s)\n",
1916                                         s_at[ i ].name, code, err );
1917                                 return 1;
1918                         }
1919                 }
1920         }
1921
1922         if ( !do_not_load_exop ) {
1923                 rc = load_extop2( (struct berval *)&slap_EXOP_REFRESH,
1924                         SLAP_EXOP_WRITES|SLAP_EXOP_HIDE, slap_exop_refresh,
1925                         !do_not_replace_exop );
1926                 if ( rc != LDAP_SUCCESS ) {
1927                         Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1928                                 "DDS unable to register refresh exop: %d.\n",
1929                                 rc );
1930                         return rc;
1931                 }
1932         }
1933
1934         dds.on_bi.bi_type = "dds";
1935
1936         dds.on_bi.bi_db_init = dds_db_init;
1937         dds.on_bi.bi_db_open = dds_db_open;
1938         dds.on_bi.bi_db_close = dds_db_close;
1939         dds.on_bi.bi_db_destroy = dds_db_destroy;
1940
1941         dds.on_bi.bi_op_add = dds_op_add;
1942         dds.on_bi.bi_op_delete = dds_op_delete;
1943         dds.on_bi.bi_op_modify = dds_op_modify;
1944         dds.on_bi.bi_op_modrdn = dds_op_rename;
1945         dds.on_bi.bi_extended = dds_op_extended;
1946
1947         dds.on_bi.bi_cf_ocs = dds_ocs;
1948
1949         rc = config_register_schema( dds_cfg, dds_ocs );
1950         if ( rc ) {
1951                 return rc;
1952         }
1953
1954         return overlay_register( &dds );
1955 }
1956
1957 #if SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC
1958 int
1959 init_module( int argc, char *argv[] )
1960 {
1961         int     i;
1962
1963         for ( i = 0; i < argc; i++ ) {
1964                 char    *arg = argv[ i ];
1965                 int     no = 0;
1966
1967                 if ( strncasecmp( arg, "no-", STRLENOF( "no-" ) ) == 0 ) {
1968                         arg += STRLENOF( "no-" );
1969                         no = 1;
1970                 }
1971
1972                 if ( strcasecmp( arg, "exop" ) == 0 ) {
1973                         do_not_load_exop = no;
1974
1975                 } else if ( strcasecmp( arg, "replace" ) == 0 ) {
1976                         do_not_replace_exop = no;
1977
1978                 } else if ( strcasecmp( arg, "schema" ) == 0 ) {
1979                         do_not_load_schema = no;
1980
1981                 } else {
1982                         Log( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1983                                 "DDS unknown module arg[#%d]=\"%s\".\n",
1984                                 i, argv[ i ] );
1985                         return 1;
1986                 }
1987         }
1988
1989         return dds_initialize();
1990 }
1991 #endif /* SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC */
1992
1993 #endif  /* defined(SLAPD_OVER_DDS) */