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                         value_add_one( &tmpmod->sml_nvalues, &bv );
 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 #ifdef SLAP_ACL_HONOR_DISCLOSE
 854                                 /* return referral only if "disclose"
 855                                  * is granted on the object */
 856                                 if ( ! access_allowed( op, e,
 857                                                 slap_schema.si_ad_entry,
 858                                                 NULL, ACL_DISCLOSE, NULL ) )
 859                                 {
 860                                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 861                                         send_ldap_result( op, rs );
 862
 863                                 } else
 864 #endif /* SLAP_ACL_HONOR_DISCLOSE */
 865                                 {
 866                                         send_ldap_error( op, rs, LDAP_CONSTRAINT_VIOLATION,
 867                                                 "static entry cannot have dynamicObject as newSuperior" );
 868                                 }
 869                         }
 870                         be_entry_release_r( op, e );
 871                 }
 872                 op->o_bd->bd_info = bi;
 873                 if ( rs->sr_err != LDAP_SUCCESS ) {
 874                         return rs->sr_err;
 875                 }
 876         }
 877
 878         return SLAP_CB_CONTINUE;
 879 }
 880
 881 static int
 882 slap_parse_refresh(
 883         struct berval   *in,
 884         struct berval   *ndn,
 885         time_t          *ttl,
 886         const char      **text,
 887         void            *ctx )
 888 {
 889         int                     rc = LDAP_SUCCESS;
 890         ber_tag_t               tag;
 891         ber_len_t               len = -1;
 892         BerElementBuffer        berbuf;
 893         BerElement              *ber = (BerElement *)&berbuf;
 894         struct berval           reqdata = BER_BVNULL;
 895         int                     tmp;
 896
 897         *text = NULL;
 898
 899         if ( ndn ) {
 900                 BER_BVZERO( ndn );
 901         }
 902
 903         if ( in == NULL || in->bv_len == 0 ) {
 904                 *text = "empty request data field in refresh exop";
 905                 return LDAP_PROTOCOL_ERROR;
 906         }
 907
 908         ber_dupbv_x( &reqdata, in, ctx );
 909
 910         /* ber_init2 uses reqdata directly, doesn't allocate new buffers */
 911         ber_init2( ber, &reqdata, 0 );
 912
 913         tag = ber_scanf( ber, "{" /*}*/ );
 914
 915         if ( tag == LBER_ERROR ) {
 916                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 917                         "slap_parse_refresh: decoding error.\n" );
 918                 goto decoding_error;
 919         }
 920
 921         tag = ber_peek_tag( ber, &len );
 922         if ( tag != LDAP_TAG_EXOP_REFRESH_REQ_DN ) {
 923                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 924                         "slap_parse_refresh: decoding error.\n" );
 925                 goto decoding_error;
 926         }
 927
 928         if ( ndn ) {
 929                 struct berval   dn;
 930
 931                 tag = ber_scanf( ber, "m", &dn );
 932                 if ( tag == LBER_ERROR ) {
 933                         Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 934                                 "slap_parse_refresh: DN parse failed.\n" );
 935                         goto decoding_error;
 936                 }
 937
 938                 rc = dnNormalize( 0, NULL, NULL, &dn, ndn, ctx );
 939                 if ( rc != LDAP_SUCCESS ) {
 940                         *text = "invalid DN in refresh exop request data";
 941                         goto done;
 942                 }
 943
 944         } else {
 945                 tag = ber_scanf( ber, "x" /* "m" */ );
 946                 if ( tag == LBER_DEFAULT ) {
 947                         goto decoding_error;
 948                 }
 949         }
 950
 951         tag = ber_peek_tag( ber, &len );
 952
 953         if ( tag != LDAP_TAG_EXOP_REFRESH_REQ_TTL ) {
 954                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 955                         "slap_parse_refresh: decoding error.\n" );
 956                 goto decoding_error;
 957         }
 958
 959         tag = ber_scanf( ber, "i", &tmp );
 960         if ( tag == LBER_ERROR ) {
 961                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 962                         "slap_parse_refresh: TTL parse failed.\n" );
 963                 goto decoding_error;
 964         }
 965
 966         if ( ttl ) {
 967                 *ttl = tmp;
 968         }
 969
 970         tag = ber_peek_tag( ber, &len );
 971
 972         if ( len != 0 ) {
 973 decoding_error:;
 974                 Log1( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 975                         "slap_parse_refresh: decoding error, len=%ld\n",
 976                         (long)len );
 977                 rc = LDAP_PROTOCOL_ERROR;
 978                 *text = "data decoding error";
 979
 980 done:;
 981                 if ( ndn && !BER_BVISNULL( ndn ) ) {
 982                         slap_sl_free( ndn->bv_val, ctx );
 983                         BER_BVZERO( ndn );
 984                 }
 985         }
 986
 987         if ( !BER_BVISNULL( &reqdata ) ) {
 988                 ber_memfree_x( reqdata.bv_val, ctx );
 989         }
 990
 991         return rc;
 992 }
 993
 994 static int
 995 dds_op_extended( Operation *op, SlapReply *rs )
 996 {
 997         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 998         dds_info_t      *di = on->on_bi.bi_private;
 999
1000         if ( DDS_OFF( di ) ) {
1001                 return SLAP_CB_CONTINUE;
1002         }
1003
1004         if ( bvmatch( &op->ore_reqoid, &slap_EXOP_REFRESH ) ) {
1005                 Entry           *e = NULL;
1006                 time_t          ttl;
1007                 BackendDB       db = *op->o_bd;
1008                 SlapReply       rs2 = { REP_RESULT };
1009                 Operation       op2 = *op;
1010                 slap_callback   sc = { 0 };
1011                 slap_callback   sc2 = { 0 };
1012                 Modifications   ttlmod = { { 0 } };
1013                 struct berval   ttlvalues[ 2 ];
1014                 char            ttlbuf[] = "31557600";
1015
1016                 rs->sr_err = slap_parse_refresh( op->ore_reqdata, NULL, &ttl,
1017                         &rs->sr_text, NULL );
1018                 assert( rs->sr_err == LDAP_SUCCESS );
1019
1020                 if ( ttl <= 0 || ttl > DDS_RF2589_MAX_TTL ) {
1021                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1022                         rs->sr_text = "invalid time-to-live for dynamicObject";
1023                         return rs->sr_err;
1024                 }
1025
1026                 if ( ttl > di->di_max_ttl ) {
1027                         /* FIXME: I don't understand if this has to be an error,
1028                          * or an indication that the requested Ttl has been
1029                          * shortened to di->di_max_ttl >= 1 day */
1030                         rs->sr_err = LDAP_SIZELIMIT_EXCEEDED;
1031                         rs->sr_text = "time-to-live for dynamicObject exceeds limit";
1032                         return rs->sr_err;
1033                 }
1034
1035                 if ( di->di_min_ttl && ttl < di->di_min_ttl ) {
1036                         ttl = di->di_min_ttl;
1037                 }
1038
1039                 /* This does not apply to multi-master case */
1040                 if ( !( !SLAP_SINGLE_SHADOW( op->o_bd ) || be_isupdate( op ) ) ) {
1041                         /* we SHOULD return a referral in this case */
1042                         BerVarray defref = op->o_bd->be_update_refs
1043                                 ? op->o_bd->be_update_refs : default_referral;
1044
1045                         if ( defref != NULL ) {
1046                                 rs->sr_ref = referral_rewrite( op->o_bd->be_update_refs,
1047                                         NULL, NULL, LDAP_SCOPE_DEFAULT );
1048                                 if ( rs->sr_ref ) {
1049                                         rs->sr_flags |= REP_REF_MUSTBEFREED;
1050                                 } else {
1051                                         rs->sr_ref = defref;
1052                                 }
1053                                 rs->sr_err = LDAP_REFERRAL;
1054
1055                         } else {
1056                                 rs->sr_text = "shadow context; no update referral";
1057                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1058                         }
1059
1060                         return rs->sr_err;
1061                 }
1062
1063                 assert( !BER_BVISNULL( &op->o_req_ndn ) );
1064
1065
1066
1067                 /* check if exists but not dynamicObject */
1068                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1069                 rs->sr_err = be_entry_get_rw( op, &op->o_req_ndn,
1070                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
1071                 if ( rs->sr_err != LDAP_SUCCESS ) {
1072                         rs->sr_err = be_entry_get_rw( op, &op->o_req_ndn,
1073                                 NULL, NULL, 0, &e );
1074                         if ( rs->sr_err == LDAP_SUCCESS && e != NULL ) {
1075 #ifdef SLAP_ACL_HONOR_DISCLOSE
1076                                 /* return referral only if "disclose"
1077                                  * is granted on the object */
1078                                 if ( ! access_allowed( op, e,
1079                                                 slap_schema.si_ad_entry,
1080                                                 NULL, ACL_DISCLOSE, NULL ) )
1081                                 {
1082                                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
1083
1084                                 } else
1085 #endif /* SLAP_ACL_HONOR_DISCLOSE */
1086                                 {
1087                                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
1088                                         rs->sr_text = "refresh operation only applies to dynamic objects";
1089                                 }
1090                                 be_entry_release_r( op, e );
1091
1092                         } else {
1093                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
1094                         }
1095                         return rs->sr_err;
1096
1097                 } else if ( e != NULL ) {
1098                         be_entry_release_r( op, e );
1099                 }
1100
1101                 /* we require manage privileges on the entryTtl,
1102                  * and fake a manageDIT control */
1103                 op2.o_tag = LDAP_REQ_MODIFY;
1104                 op2.o_bd = &db;
1105                 db.bd_info = (BackendInfo *)on->on_info;
1106                 op2.o_callback = &sc;
1107                 sc.sc_response = slap_replog_cb;
1108                 sc.sc_next = &sc2;
1109                 sc2.sc_response = slap_null_cb;
1110                 op2.o_managedit = SLAP_CONTROL_CRITICAL;
1111                 op2.orm_modlist = &ttlmod;
1112
1113                 ttlmod.sml_op = LDAP_MOD_REPLACE;
1114                 ttlmod.sml_flags = SLAP_MOD_MANAGING;
1115                 ttlmod.sml_desc = slap_schema.si_ad_entryTtl;
1116                 ttlmod.sml_values = ttlvalues;
1117                 ttlvalues[ 0 ].bv_val = ttlbuf;
1118                 ttlvalues[ 0 ].bv_len = snprintf( ttlbuf, sizeof( ttlbuf ), "%ld", ttl );
1119                 BER_BVZERO( &ttlvalues[ 1 ] );
1120
1121                 /* the entryExpireTimestamp is added by modify */
1122                 rs->sr_err = op2.o_bd->be_modify( &op2, &rs2 );
1123
1124                 if ( ttlmod.sml_next != NULL ) {
1125                         slap_mods_free( ttlmod.sml_next, 1 );
1126                 }
1127
1128                 if ( rs->sr_err == LDAP_SUCCESS ) {
1129                         int                     rc;
1130                         BerElementBuffer        berbuf;
1131                         BerElement              *ber = (BerElement *)&berbuf;
1132
1133                         if ( rs->sr_err == LDAP_SUCCESS ) {
1134                                 ber_init_w_nullc( ber, LBER_USE_DER );
1135
1136                                 rc = ber_printf( ber, "{tiN}", LDAP_TAG_EXOP_REFRESH_RES_TTL, (int)ttl );
1137
1138                                 if ( rc < 0 ) {
1139                                         rs->sr_err = LDAP_OTHER;
1140                                         rs->sr_text = "internal error";
1141
1142                                 } else {
1143                                         (void)ber_flatten( ber, &rs->sr_rspdata );
1144                                         rs->sr_rspoid = ch_strdup( slap_EXOP_REFRESH.bv_val );
1145
1146                                         Log3( LDAP_DEBUG_TRACE, LDAP_LEVEL_INFO,
1147                                                 "%s REFRESH dn=\"%s\" TTL=%ld\n",
1148                                                 op->o_log_prefix, op->o_req_ndn.bv_val, ttl );
1149                                 }
1150
1151                                 ber_free_buf( ber );
1152                         }
1153                 }
1154
1155                 return rs->sr_err;
1156         }
1157
1158         return SLAP_CB_CONTINUE;
1159 }
1160
1161 enum {
1162         DDS_STATE = 1,
1163         DDS_MAXTTL,
1164         DDS_MINTTL,
1165         DDS_DEFAULTTTL,
1166         DDS_INTERVAL,
1167         DDS_TOLERANCE,
1168         DDS_MAXDYNAMICOBJS,
1169
1170         DDS_LAST
1171 };
1172
1173 static ConfigDriver dds_cfgen;
1174 #if 0
1175 static ConfigLDAPadd dds_ldadd;
1176 static ConfigCfAdd dds_cfadd;
1177 #endif
1178
1179 static ConfigTable dds_cfg[] = {
1180         { "dds-state", "on|off",
1181                 2, 2, 0, ARG_MAGIC|ARG_ON_OFF|DDS_STATE, dds_cfgen,
1182                 "( OLcfgOvAt:9.1 NAME 'olcDDSstate' "
1183                         "DESC 'RFC2589 Dynamic directory services state' "
1184                         "SYNTAX OMsBoolean "
1185                         "SINGLE-VALUE )", NULL, NULL },
1186         { "dds-max-ttl", "ttl",
1187                 2, 2, 0, ARG_MAGIC|DDS_MAXTTL, dds_cfgen,
1188                 "( OLcfgOvAt:9.2 NAME 'olcDDSmaxTtl' "
1189                         "DESC 'RFC2589 Dynamic directory services max TTL' "
1190                         "SYNTAX OMsDirectoryString "
1191                         "SINGLE-VALUE )", NULL, NULL },
1192         { "dds-min-ttl", "ttl",
1193                 2, 2, 0, ARG_MAGIC|DDS_MINTTL, dds_cfgen,
1194                 "( OLcfgOvAt:9.3 NAME 'olcDDSminTtl' "
1195                         "DESC 'RFC2589 Dynamic directory services min TTL' "
1196                         "SYNTAX OMsDirectoryString "
1197                         "SINGLE-VALUE )", NULL, NULL },
1198         { "dds-default-ttl", "ttl",
1199                 2, 2, 0, ARG_MAGIC|DDS_DEFAULTTTL, dds_cfgen,
1200                 "( OLcfgOvAt:9.4 NAME 'olcDDSdefaultTtl' "
1201                         "DESC 'RFC2589 Dynamic directory services default TTL' "
1202                         "SYNTAX OMsDirectoryString "
1203                         "SINGLE-VALUE )", NULL, NULL },
1204         { "dds-interval", "interval",
1205                 2, 2, 0, ARG_MAGIC|DDS_INTERVAL, dds_cfgen,
1206                 "( OLcfgOvAt:9.5 NAME 'olcDDSinterval' "
1207                         "DESC 'RFC2589 Dynamic directory services expiration "
1208                                 "task run interval' "
1209                         "SYNTAX OMsDirectoryString "
1210                         "SINGLE-VALUE )", NULL, NULL },
1211         { "dds-tolerance", "ttl",
1212                 2, 2, 0, ARG_MAGIC|DDS_TOLERANCE, dds_cfgen,
1213                 "( OLcfgOvAt:9.6 NAME 'olcDDStolerance' "
1214                         "DESC 'RFC2589 Dynamic directory services additional "
1215                                 "TTL in expiration scheduling' "
1216                         "SYNTAX OMsDirectoryString "
1217                         "SINGLE-VALUE )", NULL, NULL },
1218         { "dds-max-dynamicObjects", "num",
1219                 2, 2, 0, ARG_MAGIC|ARG_INT|DDS_MAXDYNAMICOBJS, dds_cfgen,
1220                 "( OLcfgOvAt:9.7 NAME 'olcDDSmaxDynamicObjects' "
1221                         "DESC 'RFC2589 Dynamic directory services max number of dynamic objects' "
1222                         "SYNTAX OMsInteger "
1223                         "SINGLE-VALUE )", NULL, NULL },
1224         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
1225 };
1226
1227 static ConfigOCs dds_ocs[] = {
1228         { "( OLcfgOvOc:9.1 "
1229                 "NAME 'olcDDSConfig' "
1230                 "DESC 'RFC2589 Dynamic directory services configuration' "
1231                 "SUP olcOverlayConfig "
1232                 "MAY ( "
1233                         "olcDDSstate "
1234                         "$ olcDDSmaxTtl "
1235                         "$ olcDDSminTtl "
1236                         "$ olcDDSdefaultTtl "
1237                         "$ olcDDSinterval "
1238                         "$ olcDDStolerance "
1239                         "$ olcDDSmaxDynamicObjects "
1240                 " ) "
1241                 ")", Cft_Overlay, dds_cfg, NULL, NULL /* dds_cfadd */ },
1242         { NULL, 0, NULL }
1243 };
1244
1245 #if 0
1246 static int
1247 dds_ldadd( CfEntryInfo *p, Entry *e, ConfigArgs *ca )
1248 {
1249         return LDAP_SUCCESS;
1250 }
1251
1252 static int
1253 dds_cfadd( Operation *op, SlapReply *rs, Entry *p, ConfigArgs *ca )
1254 {
1255         return 0;
1256 }
1257 #endif
1258
1259 static int
1260 dds_cfgen( ConfigArgs *c )
1261 {
1262         slap_overinst   *on = (slap_overinst *)c->bi;
1263         dds_info_t      *di = on->on_bi.bi_private;
1264         int             rc = 0;
1265         unsigned long   t;
1266
1267
1268         if ( c->op == SLAP_CONFIG_EMIT ) {
1269                 char            buf[ SLAP_TEXT_BUFLEN ];
1270                 struct berval   bv;
1271
1272                 switch( c->type ) {
1273                 case DDS_STATE:
1274                         c->value_int = !DDS_OFF( di );
1275                         break;
1276
1277                 case DDS_MAXTTL:
1278                         lutil_unparse_time( buf, sizeof( buf ), di->di_max_ttl );
1279                         ber_str2bv( buf, 0, 0, &bv );
1280                         value_add_one( &c->rvalue_vals, &bv );
1281                         break;
1282
1283                 case DDS_MINTTL:
1284                         if ( di->di_min_ttl ) {
1285                                 lutil_unparse_time( buf, sizeof( buf ), di->di_min_ttl );
1286                                 ber_str2bv( buf, 0, 0, &bv );
1287                                 value_add_one( &c->rvalue_vals, &bv );
1288
1289                         } else {
1290                                 rc = 1;
1291                         }
1292                         break;
1293
1294                 case DDS_DEFAULTTTL:
1295                         if ( di->di_default_ttl ) {
1296                                 lutil_unparse_time( buf, sizeof( buf ), di->di_default_ttl );
1297                                 ber_str2bv( buf, 0, 0, &bv );
1298                                 value_add_one( &c->rvalue_vals, &bv );
1299
1300                         } else {
1301                                 rc = 1;
1302                         }
1303                         break;
1304
1305                 case DDS_INTERVAL:
1306                         if ( di->di_interval ) {
1307                                 lutil_unparse_time( buf, sizeof( buf ), di->di_interval );
1308                                 ber_str2bv( buf, 0, 0, &bv );
1309                                 value_add_one( &c->rvalue_vals, &bv );
1310
1311                         } else {
1312                                 rc = 1;
1313                         }
1314                         break;
1315
1316                 case DDS_TOLERANCE:
1317                         if ( di->di_tolerance ) {
1318                                 lutil_unparse_time( buf, sizeof( buf ), di->di_tolerance );
1319                                 ber_str2bv( buf, 0, 0, &bv );
1320                                 value_add_one( &c->rvalue_vals, &bv );
1321
1322                         } else {
1323                                 rc = 1;
1324                         }
1325                         break;
1326
1327                 case DDS_MAXDYNAMICOBJS:
1328                         if ( di->di_max_dynamicObjects > 0 ) {
1329                                 c->value_int = di->di_max_dynamicObjects;
1330
1331                         } else {
1332                                 rc = 1;
1333                         }
1334                         break;
1335
1336                 default:
1337                         rc = 1;
1338                         break;
1339                 }
1340
1341                 return rc;
1342
1343         } else if ( c->op == LDAP_MOD_DELETE ) {
1344                 switch( c->type ) {
1345                 case DDS_STATE:
1346                         di->di_flags &= ~DDS_FOFF;
1347                         break;
1348
1349                 case DDS_MAXTTL:
1350                         di->di_min_ttl = DDS_RF2589_DEFAULT_TTL;
1351                         break;
1352
1353                 case DDS_MINTTL:
1354                         di->di_min_ttl = 0;
1355                         break;
1356
1357                 case DDS_DEFAULTTTL:
1358                         di->di_default_ttl = 0;
1359                         break;
1360
1361                 case DDS_INTERVAL:
1362                         di->di_interval = 0;
1363                         break;
1364
1365                 case DDS_TOLERANCE:
1366                         di->di_tolerance = 0;
1367                         break;
1368
1369                 case DDS_MAXDYNAMICOBJS:
1370                         di->di_max_dynamicObjects = 0;
1371                         break;
1372
1373                 default:
1374                         rc = 1;
1375                         break;
1376                 }
1377
1378                 return rc;
1379         }
1380
1381         switch ( c->type ) {
1382         case DDS_STATE:
1383                 if ( c->value_int ) {
1384                         di->di_flags &= ~DDS_FOFF;
1385
1386                 } else {
1387                         di->di_flags |= DDS_FOFF;
1388                 }
1389                 break;
1390
1391         case DDS_MAXTTL:
1392                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1393                         snprintf( c->msg, sizeof( c->msg),
1394                                 "DDS unable to parse dds-max-ttl \"%s\"",
1395                                 c->argv[ 1 ] );
1396                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1397                                 "%s: %s.\n", c->log, c->msg );
1398                         return 1;
1399                 }
1400
1401                 if ( t < DDS_RF2589_DEFAULT_TTL || t > DDS_RF2589_MAX_TTL ) {
1402                         snprintf( c->msg, sizeof( c->msg ),
1403                                 "DDS invalid dds-max-ttl=%ld; must be between %d and %d",
1404                                 t, DDS_RF2589_DEFAULT_TTL, DDS_RF2589_MAX_TTL );
1405                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1406                                 "%s: %s.\n", c->log, c->msg );
1407                         return 1;
1408                 }
1409
1410                 di->di_max_ttl = (time_t)t;
1411                 break;
1412
1413         case DDS_MINTTL:
1414                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1415                         snprintf( c->msg, sizeof( c->msg),
1416                                 "DDS unable to parse dds-min-ttl \"%s\"",
1417                                 c->argv[ 1 ] );
1418                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1419                                 "%s: %s.\n", c->log, c->msg );
1420                         return 1;
1421                 }
1422
1423                 if ( t < 0 || t > DDS_RF2589_MAX_TTL ) {
1424                         snprintf( c->msg, sizeof( c->msg ),
1425                                 "DDS invalid dds-min-ttl=%ld",
1426                                 t );
1427                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1428                                 "%s: %s.\n", c->log, c->msg );
1429                         return 1;
1430                 }
1431
1432                 if ( t == 0 ) {
1433                         di->di_min_ttl = DDS_RF2589_DEFAULT_TTL;
1434
1435                 } else {
1436                         di->di_min_ttl = (time_t)t;
1437                 }
1438                 break;
1439
1440         case DDS_DEFAULTTTL:
1441                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1442                         snprintf( c->msg, sizeof( c->msg),
1443                                 "DDS unable to parse dds-default-ttl \"%s\"",
1444                                 c->argv[ 1 ] );
1445                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1446                                 "%s: %s.\n", c->log, c->msg );
1447                         return 1;
1448                 }
1449
1450                 if ( t < 0 || t > DDS_RF2589_MAX_TTL ) {
1451                         snprintf( c->msg, sizeof( c->msg ),
1452                                 "DDS invalid dds-default-ttl=%ld",
1453                                 t );
1454                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1455                                 "%s: %s.\n", c->log, c->msg );
1456                         return 1;
1457                 }
1458
1459                 if ( t == 0 ) {
1460                         di->di_default_ttl = DDS_RF2589_DEFAULT_TTL;
1461
1462                 } else {
1463                         di->di_default_ttl = (time_t)t;
1464                 }
1465                 break;
1466
1467         case DDS_INTERVAL:
1468                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1469                         snprintf( c->msg, sizeof( c->msg),
1470                                 "DDS unable to parse dds-interval \"%s\"",
1471                                 c->argv[ 1 ] );
1472                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1473                                 "%s: %s.\n", c->log, c->msg );
1474                         return 1;
1475                 }
1476
1477                 if ( t <= 0 ) {
1478                         snprintf( c->msg, sizeof( c->msg ),
1479                                 "DDS invalid dds-interval=%ld",
1480                                 t );
1481                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1482                                 "%s: %s.\n", c->log, c->msg );
1483                         return 1;
1484                 }
1485
1486                 if ( t < 60 ) {
1487                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_NOTICE,
1488                                 "%s: dds-interval=%lu may be too small.\n",
1489                                 c->log, t );
1490                 }
1491
1492                 di->di_interval = (time_t)t;
1493                 if ( di->di_expire_task ) {
1494                         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1495                         if ( ldap_pvt_runqueue_isrunning( &slapd_rq, di->di_expire_task ) ) {
1496                                 ldap_pvt_runqueue_stoptask( &slapd_rq, di->di_expire_task );
1497                         }
1498                         di->di_expire_task->interval.tv_sec = DDS_INTERVAL( di );
1499                         ldap_pvt_runqueue_resched( &slapd_rq, di->di_expire_task, 0 );
1500                         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1501                 }
1502                 break;
1503
1504         case DDS_TOLERANCE:
1505                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1506                         snprintf( c->msg, sizeof( c->msg),
1507                                 "DDS unable to parse dds-tolerance \"%s\"",
1508                                 c->argv[ 1 ] );
1509                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1510                                 "%s: %s.\n", c->log, c->msg );
1511                         return 1;
1512                 }
1513
1514                 if ( t < 0 || t > DDS_RF2589_MAX_TTL ) {
1515                         snprintf( c->msg, sizeof( c->msg ),
1516                                 "DDS invalid dds-tolerance=%ld",
1517                                 t );
1518                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1519                                 "%s: %s.\n", c->log, c->msg );
1520                         return 1;
1521                 }
1522
1523                 di->di_tolerance = (time_t)t;
1524                 break;
1525
1526         case DDS_MAXDYNAMICOBJS:
1527                 if ( c->value_int < 0 ) {
1528                         snprintf( c->msg, sizeof( c->msg ),
1529                                 "DDS invalid dds-max-dynamicObjects=%d", c->value_int );
1530                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1531                                 "%s: %s.\n", c->log, c->msg );
1532                         return 1;
1533                 }
1534                 di->di_max_dynamicObjects = c->value_int;
1535                 break;
1536
1537         default:
1538                 rc = 1;
1539                 break;
1540         }
1541
1542         return rc;
1543 }
1544
1545 static int
1546 dds_db_init(
1547         BackendDB       *be )
1548 {
1549         slap_overinst   *on = (slap_overinst *)be->bd_info;
1550         dds_info_t      *di;
1551         BackendInfo     *bi = on->on_info->oi_orig;
1552
1553         if ( SLAP_ISGLOBALOVERLAY( be ) ) {
1554                 Log0( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1555                         "DDS cannot be used as global overlay.\n" );
1556                 return 1;
1557         }
1558
1559         /* check support for required functions */
1560         /* FIXME: some could be provided by other overlays in between */
1561         if ( bi->bi_op_add == NULL                      /* object creation */
1562                 || bi->bi_op_delete == NULL             /* object deletion */
1563                 || bi->bi_op_modify == NULL             /* object refresh */
1564                 || bi->bi_op_search == NULL             /* object expiration */
1565                 || bi->bi_entry_get_rw == NULL )        /* object type/existence checking */
1566         {
1567                 Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1568                         "DDS backend \"%s\" does not provide "
1569                         "required functionality.\n",
1570                         bi->bi_type );
1571                 return 1;
1572         }
1573
1574         di = (dds_info_t *)ch_calloc( 1, sizeof( dds_info_t ) );
1575         on->on_bi.bi_private = di;
1576
1577         di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1578         di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1579
1580         ldap_pvt_thread_mutex_init( &di->di_mutex );
1581
1582         SLAP_DBFLAGS( be ) |= SLAP_DBFLAG_DYNAMIC;
1583
1584         return 0;
1585 }
1586
1587 /* adds dynamicSubtrees to root DSE */
1588 static int
1589 dds_entry_info( void *arg, Entry *e )
1590 {
1591         dds_info_t      *di = (dds_info_t *)arg;
1592
1593         attr_merge( e, slap_schema.si_ad_dynamicSubtrees,
1594                 di->di_suffix, di->di_nsuffix );
1595
1596         return 0;
1597 }
1598
1599 /* callback that counts the returned entries, since the search
1600  * does not get to the point in slap_send_search_entries where
1601  * the actual count occurs */
1602 static int
1603 dds_count_cb( Operation *op, SlapReply *rs )
1604 {
1605         int     *nump = (int *)op->o_callback->sc_private;
1606
1607         switch ( rs->sr_type ) {
1608         case REP_SEARCH:
1609                 (*nump)++;
1610                 break;
1611
1612         case REP_SEARCHREF:
1613         case REP_RESULT:
1614                 break;
1615
1616         default:
1617                 assert( 0 );
1618         }
1619
1620         return 0;
1621 }
1622
1623 /* count dynamic objects existing in the database at startup */
1624 static int
1625 dds_count( void *ctx, BackendDB *be )
1626 {
1627         slap_overinst   *on = (slap_overinst *)be->bd_info;
1628         dds_info_t      *di = (dds_info_t *)on->on_bi.bi_private;
1629
1630         Connection      conn = { 0 };
1631         OperationBuffer opbuf;
1632         Operation       *op;
1633         slap_callback   sc = { 0 };
1634         SlapReply       rs = { REP_RESULT };
1635
1636         op = (Operation *)&opbuf;
1637         connection_fake_init( &conn, op, ctx );
1638
1639         op->o_tag = LDAP_REQ_SEARCH;
1640         memset( &op->oq_search, 0, sizeof( op->oq_search ) );
1641
1642         op->o_bd = be;
1643
1644         op->o_req_dn = op->o_bd->be_suffix[ 0 ];
1645         op->o_req_ndn = op->o_bd->be_nsuffix[ 0 ];
1646
1647         op->o_dn = op->o_bd->be_rootdn;
1648         op->o_ndn = op->o_bd->be_rootndn;
1649
1650         op->ors_scope = LDAP_SCOPE_SUBTREE;
1651         op->ors_tlimit = SLAP_NO_LIMIT;
1652         op->ors_slimit = SLAP_NO_LIMIT;
1653         op->ors_attrs = slap_anlist_no_attrs;
1654
1655         op->ors_filterstr.bv_len = STRLENOF( "(objectClass=" ")" )
1656                 + slap_schema.si_oc_dynamicObject->soc_cname.bv_len;
1657         op->ors_filterstr.bv_val = op->o_tmpalloc( op->ors_filterstr.bv_len + 1, op->o_tmpmemctx );
1658         snprintf( op->ors_filterstr.bv_val, op->ors_filterstr.bv_len + 1,
1659                 "(objectClass=%s)",
1660                 slap_schema.si_oc_dynamicObject->soc_cname.bv_val );
1661
1662         op->ors_filter = str2filter_x( op, op->ors_filterstr.bv_val );
1663         if ( op->ors_filter == NULL ) {
1664                 rs.sr_err = LDAP_OTHER;
1665                 goto done_search;
1666         }
1667
1668         op->o_callback = &sc;
1669         sc.sc_response = dds_count_cb;
1670         sc.sc_private = &di->di_num_dynamicObjects;
1671
1672         op->o_bd->bd_info = (BackendInfo *)on->on_info;
1673         (void)op->o_bd->bd_info->bi_op_search( op, &rs );
1674         op->o_bd->bd_info = (BackendInfo *)on;
1675
1676 done_search:;
1677         op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
1678         filter_free_x( op, op->ors_filter );
1679
1680         if ( rs.sr_err == LDAP_SUCCESS ) {
1681                 Log1( LDAP_DEBUG_STATS, LDAP_LEVEL_INFO,
1682                         "DDS non-expired=%d\n",
1683                         di->di_num_dynamicObjects );
1684
1685         } else {
1686                 Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1687                         "DDS non-expired objects lookup failed err=%d\n",
1688                         rs.sr_err );
1689         }
1690
1691         return rs.sr_err;
1692 }
1693
1694 static int
1695 dds_db_open(
1696         BackendDB       *be )
1697 {
1698         slap_overinst   *on = (slap_overinst *)be->bd_info;
1699         dds_info_t      *di = on->on_bi.bi_private;
1700         int             rc = 0;
1701         void            *thrctx = ldap_pvt_thread_pool_context();
1702
1703         if ( DDS_OFF( di ) ) {
1704                 goto done;
1705         }
1706
1707         if ( SLAP_SINGLE_SHADOW( be ) ) {
1708                 Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1709                         "DDS incompatible with shadow database \"%s\".\n",
1710                         be->be_suffix[ 0 ].bv_val );
1711                 return 1;
1712         }
1713
1714         if ( di->di_max_ttl == 0 ) {
1715                 di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1716         }
1717
1718         if ( di->di_min_ttl == 0 ) {
1719                 di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1720         }
1721
1722         di->di_suffix = be->be_suffix;
1723         di->di_nsuffix = be->be_nsuffix;
1724
1725         /* ... so that count, if required, is accurate */
1726         if ( di->di_max_dynamicObjects > 0 ) {
1727                 /* force deletion of expired entries... */
1728                 be->bd_info = (BackendInfo *)on->on_info;
1729                 rc = dds_expire( thrctx, di );
1730                 be->bd_info = (BackendInfo *)on;
1731                 if ( rc != LDAP_SUCCESS ) {
1732                         rc = 1;
1733                         goto done;
1734                 }
1735
1736                 rc = dds_count( thrctx, be );
1737                 if ( rc != LDAP_SUCCESS ) {
1738                         rc = 1;
1739                         goto done;
1740                 }
1741         }
1742
1743         /* start expire task */
1744         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1745         di->di_expire_task = ldap_pvt_runqueue_insert( &slapd_rq,
1746                 DDS_INTERVAL( di ),
1747                 dds_expire_fn, di, "dds_expire_fn",
1748                 be->be_suffix[ 0 ].bv_val );
1749         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1750
1751         /* register dinamicSubtrees root DSE info support */
1752         rc = entry_info_register( dds_entry_info, (void *)di );
1753
1754 done:;
1755         ldap_pvt_thread_pool_context_reset( thrctx );
1756
1757         return rc;
1758 }
1759
1760 static int
1761 dds_db_close(
1762         BackendDB       *be )
1763 {
1764         slap_overinst   *on = (slap_overinst *)be->bd_info;
1765         dds_info_t      *di = on->on_bi.bi_private;
1766
1767         /* stop expire task */
1768         if ( di && di->di_expire_task ) {
1769                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1770                 if ( ldap_pvt_runqueue_isrunning( &slapd_rq, di->di_expire_task ) ) {
1771                         ldap_pvt_runqueue_stoptask( &slapd_rq, di->di_expire_task );
1772                 }
1773                 ldap_pvt_runqueue_remove( &slapd_rq, di->di_expire_task );
1774                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1775         }
1776
1777         (void)entry_info_unregister( dds_entry_info, (void *)di );
1778
1779         return 0;
1780 }
1781
1782 static int
1783 dds_db_destroy(
1784         BackendDB       *be )
1785 {
1786         slap_overinst   *on = (slap_overinst *)be->bd_info;
1787         dds_info_t      *di = on->on_bi.bi_private;
1788
1789         if ( di != NULL ) {
1790                 ldap_pvt_thread_mutex_destroy( &di->di_mutex );
1791
1792                 free( di );
1793         }
1794
1795         return 0;
1796 }
1797
1798 static int
1799 slap_exop_refresh(
1800                 Operation       *op,
1801                 SlapReply       *rs )
1802 {
1803         BackendDB               *bd = op->o_bd;
1804
1805         rs->sr_err = slap_parse_refresh( op->ore_reqdata, &op->o_req_ndn, NULL,
1806                 &rs->sr_text, op->o_tmpmemctx );
1807         if ( rs->sr_err != LDAP_SUCCESS ) {
1808                 return rs->sr_err;
1809         }
1810
1811         Log2( LDAP_DEBUG_STATS, LDAP_LEVEL_INFO,
1812                 "%s REFRESH dn=\"%s\"\n",
1813                 op->o_log_prefix, op->o_req_ndn.bv_val );
1814         op->o_req_dn = op->o_req_ndn;
1815
1816         op->o_bd = select_backend( &op->o_req_ndn, 0, 0 );
1817         if ( !SLAP_DYNAMIC( op->o_bd ) ) {
1818                 send_ldap_error( op, rs, LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
1819                         "backend does not support dynamic directory services" );
1820                 goto done;
1821         }
1822
1823         rs->sr_err = backend_check_restrictions( op, rs,
1824                 (struct berval *)&slap_EXOP_REFRESH );
1825         if ( rs->sr_err != LDAP_SUCCESS ) {
1826                 goto done;
1827         }
1828
1829         if ( op->o_bd->be_extended == NULL ) {
1830                 send_ldap_error( op, rs, LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
1831                         "backend does not support extended operations" );
1832                 goto done;
1833         }
1834
1835         op->o_bd->be_extended( op, rs );
1836
1837 done:;
1838         if ( !BER_BVISNULL( &op->o_req_ndn ) ) {
1839                 op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
1840                 BER_BVZERO( &op->o_req_ndn );
1841                 BER_BVZERO( &op->o_req_dn );
1842         }
1843         op->o_bd = bd;
1844
1845         return rs->sr_err;
1846 }
1847
1848 static slap_overinst dds;
1849
1850 static int do_not_load_exop;
1851 static int do_not_replace_exop;
1852 static int do_not_load_schema;
1853
1854 #if SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC
1855 static
1856 #endif /* SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC */
1857 int
1858 dds_initialize()
1859 {
1860         int             rc = 0;
1861         int             i, code;
1862         const char      *err;
1863
1864         /* Make sure we don't exceed the bits reserved for userland */
1865         config_check_userland( DDS_LAST );
1866
1867         if ( !do_not_load_schema ) {
1868                 static struct {
1869                         char                    *name;
1870                         char                    *desc;
1871                         AttributeDescription    **ad;
1872                 }               s_at[] = {
1873                         { "entryExpireTimestamp", "( 1.3.6.1.4.1.4203.666.1.57 "
1874                                 "NAME ( 'entryExpireTimestamp' ) "
1875                                 "DESC 'RFC2589 OpenLDAP extension: expire time of a dynamic object, "
1876                                         "computed as now + entryTtl' "
1877                                 "EQUALITY generalizedTimeMatch "
1878                                 "ORDERING generalizedTimeOrderingMatch "
1879                                 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
1880                                 "SINGLE-VALUE "
1881                                 "NO-USER-MODIFICATION "
1882                                 "USAGE dSAOperation )",
1883                                 &ad_entryExpireTimestamp },
1884                         { NULL }
1885                 };
1886
1887                 for ( i = 0; s_at[ i ].name != NULL; i++ ) {
1888                         LDAPAttributeType       *at;
1889
1890                         at = ldap_str2attributetype( s_at[ i ].desc,
1891                                 &code, &err, LDAP_SCHEMA_ALLOW_ALL );
1892                         if ( !at ) {
1893                                 fprintf( stderr, "dds_initialize: "
1894                                         "AttributeType load failed: %s %s\n",
1895                                         ldap_scherr2str( code ), err );
1896                                 return code;
1897                         }
1898
1899                         code = at_add( at, 0, NULL, &err );
1900                         ldap_memfree( at );
1901                         if ( code != LDAP_SUCCESS ) {
1902                                 fprintf( stderr, "dds_initialize: "
1903                                         "AttributeType load failed: %s %s\n",
1904                                         scherr2str( code ), err );
1905                                 return code;
1906                         }
1907
1908                         code = slap_str2ad( s_at[ i ].name, s_at[ i ].ad, &err );
1909                         if ( code != LDAP_SUCCESS ) {
1910                                 fprintf( stderr, "dds_initialize: "
1911                                         "unable to find AttributeDescription "
1912                                         "\"%s\": %d (%s)\n",
1913                                         s_at[ i ].name, code, err );
1914                                 return 1;
1915                         }
1916                 }
1917         }
1918
1919         if ( !do_not_load_exop ) {
1920                 rc = load_extop2( (struct berval *)&slap_EXOP_REFRESH,
1921                         SLAP_EXOP_WRITES|SLAP_EXOP_HIDE, slap_exop_refresh,
1922                         !do_not_replace_exop );
1923                 if ( rc != LDAP_SUCCESS ) {
1924                         Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1925                                 "DDS unable to register refresh exop: %d.\n",
1926                                 rc );
1927                         return rc;
1928                 }
1929         }
1930
1931         dds.on_bi.bi_type = "dds";
1932
1933         dds.on_bi.bi_db_init = dds_db_init;
1934         dds.on_bi.bi_db_open = dds_db_open;
1935         dds.on_bi.bi_db_close = dds_db_close;
1936         dds.on_bi.bi_db_destroy = dds_db_destroy;
1937
1938         dds.on_bi.bi_op_add = dds_op_add;
1939         dds.on_bi.bi_op_delete = dds_op_delete;
1940         dds.on_bi.bi_op_modify = dds_op_modify;
1941         dds.on_bi.bi_op_modrdn = dds_op_rename;
1942         dds.on_bi.bi_extended = dds_op_extended;
1943
1944         dds.on_bi.bi_cf_ocs = dds_ocs;
1945
1946         rc = config_register_schema( dds_cfg, dds_ocs );
1947         if ( rc ) {
1948                 return rc;
1949         }
1950
1951         return overlay_register( &dds );
1952 }
1953
1954 #if SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC
1955 int
1956 init_module( int argc, char *argv[] )
1957 {
1958         int     i;
1959
1960         for ( i = 0; i < argc; i++ ) {
1961                 char    *arg = argv[ i ];
1962                 int     no = 0;
1963
1964                 if ( strncasecmp( arg, "no-", STRLENOF( "no-" ) ) == 0 ) {
1965                         arg += STRLENOF( "no-" );
1966                         no = 1;
1967                 }
1968
1969                 if ( strcasecmp( arg, "exop" ) == 0 ) {
1970                         do_not_load_exop = no;
1971
1972                 } else if ( strcasecmp( arg, "replace" ) == 0 ) {
1973                         do_not_replace_exop = no;
1974
1975                 } else if ( strcasecmp( arg, "schema" ) == 0 ) {
1976                         do_not_load_schema = no;
1977
1978                 } else {
1979                         Log( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1980                                 "DDS unknown module arg[#%d]=\"%s\".\n",
1981                                 i, argv[ i ] );
1982                         return 1;
1983                 }
1984         }
1985
1986         return dds_initialize();
1987 }
1988 #endif /* SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC */
1989
1990 #endif  /* defined(SLAPD_OVER_DDS) */