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 2005-2007 The OpenLDAP Foundation.
   5  * Portions Copyright 2005-2006 SysNet s.n.c.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* ACKNOWLEDGEMENTS:
  17  * This work was initially developed by Pierangelo Masarati for inclusion
  18  * in OpenLDAP Software, sponsored by SysNet s.n.c.
  19  */
  20
  21 #include "portable.h"
  22
  23 #ifdef SLAPD_OVER_DDS
  24
  25 #include <stdio.h>
  26
  27 #include <ac/string.h>
  28 #include <ac/time.h>
  29
  30 #include "slap.h"
  31 #include "lutil.h"
  32 #include "ldap_rq.h"
  33
  34 #include "config.h"
  35
  36 #define DDS_RF2589_MAX_TTL              (31557600)      /* 1 year + 6 hours */
  37 #define DDS_RF2589_DEFAULT_TTL          (86400)         /* 1 day */
  38 #define DDS_DEFAULT_INTERVAL            (3600)          /* 1 hour */
  39
  40 typedef struct dds_info_t {
  41         unsigned                di_flags;
  42 #define DDS_FOFF                (0x1U)          /* is this really needed? */
  43 #define DDS_SET(di, f)          ( (di)->di_flags & (f) )
  44
  45 #define DDS_OFF(di)             DDS_SET( (di), DDS_FOFF )
  46
  47         time_t                  di_max_ttl;
  48         time_t                  di_min_ttl;
  49         time_t                  di_default_ttl;
  50 #define DDS_DEFAULT_TTL(di)     \
  51         ( (di)->di_default_ttl ? (di)->di_default_ttl : (di)->di_max_ttl )
  52
  53         time_t                  di_tolerance;
  54
  55         /* expire check interval and task */
  56         time_t                  di_interval;
  57 #define DDS_INTERVAL(di)        \
  58         ( (di)->di_interval ? (di)->di_interval : DDS_DEFAULT_INTERVAL )
  59         struct re_s             *di_expire_task;
  60
  61         /* allows to limit the maximum number of dynamic objects */
  62         ldap_pvt_thread_mutex_t di_mutex;
  63         int                     di_num_dynamicObjects;
  64         int                     di_max_dynamicObjects;
  65
  66         /* used to advertize the dynamicSubtrees in the root DSE,
  67          * and to select the database in the expiration task */
  68         BerVarray               di_suffix;
  69         BerVarray               di_nsuffix;
  70 } dds_info_t;
  71
  72 static struct berval slap_EXOP_REFRESH = BER_BVC( LDAP_EXOP_REFRESH );
  73 static AttributeDescription     *ad_entryExpireTimestamp;
  74
  75 /* list of expired DNs */
  76 typedef struct dds_expire_t {
  77         struct berval           de_ndn;
  78         struct dds_expire_t     *de_next;
  79 } dds_expire_t;
  80
  81 typedef struct dds_cb_t {
  82         dds_expire_t    *dc_ndnlist;
  83 } dds_cb_t;
  84
  85 static int
  86 dds_expire_cb( Operation *op, SlapReply *rs )
  87 {
  88         dds_cb_t        *dc = (dds_cb_t *)op->o_callback->sc_private;
  89         dds_expire_t    *de;
  90         int             rc;
  91
  92         switch ( rs->sr_type ) {
  93         case REP_SEARCH:
  94                 /* alloc list and buffer for berval all in one */
  95                 de = op->o_tmpalloc( sizeof( dds_expire_t ) + rs->sr_entry->e_nname.bv_len + 1,
  96                         op->o_tmpmemctx );
  97
  98                 de->de_next = dc->dc_ndnlist;
  99                 dc->dc_ndnlist = de;
 100
 101                 de->de_ndn.bv_len = rs->sr_entry->e_nname.bv_len;
 102                 de->de_ndn.bv_val = (char *)&de[ 1 ];
 103                 AC_MEMCPY( de->de_ndn.bv_val, rs->sr_entry->e_nname.bv_val,
 104                         rs->sr_entry->e_nname.bv_len + 1 );
 105                 rc = 0;
 106                 break;
 107
 108         case REP_SEARCHREF:
 109         case REP_RESULT:
 110                 rc = rs->sr_err;
 111                 break;
 112
 113         default:
 114                 assert( 0 );
 115         }
 116
 117         return rc;
 118 }
 119
 120 static int
 121 dds_expire( void *ctx, dds_info_t *di )
 122 {
 123         Connection      conn = { 0 };
 124         OperationBuffer opbuf;
 125         Operation       *op;
 126         slap_callback   sc = { 0 };
 127         dds_cb_t        dc = { 0 };
 128         dds_expire_t    *de = NULL, **dep;
 129         SlapReply       rs = { REP_RESULT };
 130
 131         time_t          expire;
 132         char            tsbuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
 133         struct berval   ts;
 134
 135         int             ndeletes, ntotdeletes;
 136
 137         connection_fake_init( &conn, &opbuf, ctx );
 138         op = &opbuf.ob_op;
 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 );
 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_null_cb;
 197         sc.sc_private = NULL;
 198
 199         for ( ntotdeletes = 0, ndeletes = 1; dc.dc_ndnlist != NULL  && ndeletes > 0; ) {
 200                 ndeletes = 0;
 201
 202                 for ( dep = &dc.dc_ndnlist; *dep != NULL; ) {
 203                         de = *dep;
 204
 205                         op->o_req_dn = de->de_ndn;
 206                         op->o_req_ndn = de->de_ndn;
 207                         (void)op->o_bd->bd_info->bi_op_delete( op, &rs );
 208                         switch ( rs.sr_err ) {
 209                         case LDAP_SUCCESS:
 210                                 Log1( LDAP_DEBUG_STATS, LDAP_LEVEL_INFO,
 211                                         "DDS dn=\"%s\" expired.\n",
 212                                         de->de_ndn.bv_val );
 213                                 ndeletes++;
 214                                 break;
 215
 216                         case LDAP_NOT_ALLOWED_ON_NONLEAF:
 217                                 Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_NOTICE,
 218                                         "DDS dn=\"%s\" is non-leaf; "
 219                                         "deferring.\n",
 220                                         de->de_ndn.bv_val );
 221                                 dep = &de->de_next;
 222                                 de = NULL;
 223                                 break;
 224
 225                         default:
 226                                 Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_NOTICE,
 227                                         "DDS dn=\"%s\" err=%d; "
 228                                         "deferring.\n",
 229                                         de->de_ndn.bv_val, rs.sr_err );
 230                                 break;
 231                         }
 232
 233                         if ( de != NULL ) {
 234                                 *dep = de->de_next;
 235                                 dep = &de->de_next;
 236                                 op->o_tmpfree( de, op->o_tmpmemctx );
 237                         }
 238                 }
 239
 240                 ntotdeletes += ndeletes;
 241         }
 242
 243         rs.sr_err = LDAP_SUCCESS;
 244
 245         Log1( LDAP_DEBUG_STATS, LDAP_LEVEL_INFO,
 246                 "DDS expired=%d\n", ntotdeletes );
 247
 248 done:;
 249         return rs.sr_err;
 250 }
 251
 252 static void *
 253 dds_expire_fn( void *ctx, void *arg )
 254 {
 255         struct re_s     *rtask = arg;
 256         dds_info_t      *di = rtask->arg;
 257
 258         assert( di->di_expire_task == rtask );
 259
 260         (void)dds_expire( ctx, di );
 261
 262         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
 263         if ( ldap_pvt_runqueue_isrunning( &slapd_rq, rtask )) {
 264                 ldap_pvt_runqueue_stoptask( &slapd_rq, rtask );
 265         }
 266         ldap_pvt_runqueue_resched( &slapd_rq, rtask, 0 );
 267         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
 268
 269         return NULL;
 270 }
 271
 272 /* frees the callback */
 273 static int
 274 dds_freeit_cb( Operation *op, SlapReply *rs )
 275 {
 276         op->o_tmpfree( op->o_callback, op->o_tmpmemctx );
 277         op->o_callback = NULL;
 278
 279         return SLAP_CB_CONTINUE;
 280 }
 281
 282 /* updates counter - installed on add/delete only if required */
 283 static int
 284 dds_counter_cb( Operation *op, SlapReply *rs )
 285 {
 286         assert( rs->sr_type == REP_RESULT );
 287
 288         if ( rs->sr_err == LDAP_SUCCESS ) {
 289                 dds_info_t      *di = op->o_callback->sc_private;
 290
 291                 ldap_pvt_thread_mutex_lock( &di->di_mutex );
 292                 switch ( op->o_tag ) {
 293                 case LDAP_REQ_DELETE:
 294                         assert( di->di_num_dynamicObjects > 0 );
 295                         di->di_num_dynamicObjects--;
 296                         break;
 297
 298                 case LDAP_REQ_ADD:
 299                         assert( di->di_num_dynamicObjects < di->di_max_dynamicObjects );
 300                         di->di_num_dynamicObjects++;
 301                         break;
 302
 303                 default:
 304                         assert( 0 );
 305                 }
 306                 ldap_pvt_thread_mutex_unlock( &di->di_mutex );
 307         }
 308
 309         return dds_freeit_cb( op, rs );
 310 }
 311
 312 static int
 313 dds_op_add( Operation *op, SlapReply *rs )
 314 {
 315         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 316         dds_info_t      *di = on->on_bi.bi_private;
 317         int             is_dynamicObject;
 318
 319         if ( DDS_OFF( di ) ) {
 320                 return SLAP_CB_CONTINUE;
 321         }
 322
 323         is_dynamicObject = is_entry_dynamicObject( op->ora_e );
 324
 325         /* FIXME: do not allow this right now, pending clarification */
 326         if ( is_dynamicObject ) {
 327                 rs->sr_err = LDAP_SUCCESS;
 328
 329                 if ( is_entry_referral( op->ora_e ) ) {
 330                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 331                         rs->sr_text = "a referral cannot be a dynamicObject";
 332
 333                 } else if ( is_entry_alias( op->ora_e ) ) {
 334                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 335                         rs->sr_text = "an alias cannot be a dynamicObject";
 336                 }
 337
 338                 if ( rs->sr_err != LDAP_SUCCESS ) {
 339                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 340                         send_ldap_result( op, rs );
 341                         return rs->sr_err;
 342                 }
 343         }
 344
 345         /* we don't allow dynamicObjects to have static subordinates */
 346         if ( !dn_match( &op->o_req_ndn, &op->o_bd->be_nsuffix[ 0 ] ) ) {
 347                 struct berval   p_ndn;
 348                 Entry           *e = NULL;
 349                 int             rc;
 350                 BackendInfo     *bi = op->o_bd->bd_info;
 351
 352                 dnParent( &op->o_req_ndn, &p_ndn );
 353                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 354                 rc = be_entry_get_rw( op, &p_ndn,
 355                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
 356                 if ( rc == LDAP_SUCCESS && e != NULL ) {
 357                         if ( !is_dynamicObject ) {
 358                                 /* return referral only if "disclose"
 359                                  * is granted on the object */
 360                                 if ( ! access_allowed( op, e,
 361                                                 slap_schema.si_ad_entry,
 362                                                 NULL, ACL_DISCLOSE, NULL ) )
 363                                 {
 364                                         rc = rs->sr_err = LDAP_NO_SUCH_OBJECT;
 365                                         send_ldap_result( op, rs );
 366
 367                                 } else {
 368                                         rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 369                                         send_ldap_error( op, rs, rc, "no static subordinate entries allowed for dynamicObject" );
 370                                 }
 371                         }
 372
 373                         be_entry_release_r( op, e );
 374                         if ( rc != LDAP_SUCCESS ) {
 375                                 return rc;
 376                         }
 377                 }
 378                 op->o_bd->bd_info = bi;
 379         }
 380
 381         /* handle dynamic object operational attr(s) */
 382         if ( is_dynamicObject ) {
 383                 time_t          ttl, expire;
 384                 char            ttlbuf[] = "31557600";
 385                 char            tsbuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
 386                 struct berval   bv;
 387
 388                 if ( !be_isroot_dn( op->o_bd, &op->o_req_ndn ) ) {
 389                         ldap_pvt_thread_mutex_lock( &di->di_mutex );
 390                         rs->sr_err = ( di->di_max_dynamicObjects &&
 391                                 di->di_num_dynamicObjects >= di->di_max_dynamicObjects );
 392                         ldap_pvt_thread_mutex_unlock( &di->di_mutex );
 393                         if ( rs->sr_err ) {
 394                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 395                                 send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
 396                                         "too many dynamicObjects in context" );
 397                                 return rs->sr_err;
 398                         }
 399                 }
 400
 401                 ttl = DDS_DEFAULT_TTL( di );
 402
 403                 assert( ttl <= DDS_RF2589_MAX_TTL );
 404
 405                 bv.bv_val = ttlbuf;
 406                 bv.bv_len = snprintf( ttlbuf, sizeof( ttlbuf ), "%ld", ttl );
 407
 408                 /* FIXME: apparently, values in op->ora_e are malloc'ed
 409                  * on the thread's slab; works fine by chance,
 410                  * only because the attribute doesn't exist yet. */
 411                 assert( attr_find( op->ora_e->e_attrs, slap_schema.si_ad_entryTtl ) == NULL );
 412                 attr_merge_one( op->ora_e, slap_schema.si_ad_entryTtl, &bv, &bv );
 413
 414                 expire = slap_get_time() + ttl;
 415                 bv.bv_val = tsbuf;
 416                 bv.bv_len = sizeof( tsbuf );
 417                 slap_timestamp( &expire, &bv );
 418                 assert( attr_find( op->ora_e->e_attrs, ad_entryExpireTimestamp ) == NULL );
 419                 attr_merge_one( op->ora_e, ad_entryExpireTimestamp, &bv, &bv );
 420
 421                 /* if required, install counter callback */
 422                 if ( di->di_max_dynamicObjects > 0) {
 423                         slap_callback   *sc;
 424
 425                         sc = op->o_tmpalloc( sizeof( slap_callback ), op->o_tmpmemctx );
 426                         sc->sc_cleanup = dds_freeit_cb;
 427                         sc->sc_response = dds_counter_cb;
 428                         sc->sc_private = di;
 429                         sc->sc_next = op->o_callback;
 430
 431                         op->o_callback = sc;
 432                 }
 433         }
 434
 435         return SLAP_CB_CONTINUE;
 436 }
 437
 438 static int
 439 dds_op_delete( Operation *op, SlapReply *rs )
 440 {
 441         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 442         dds_info_t      *di = on->on_bi.bi_private;
 443
 444         /* if required, install counter callback */
 445         if ( !DDS_OFF( di ) && di->di_max_dynamicObjects > 0 ) {
 446                 Entry           *e = NULL;
 447                 BackendInfo     *bi = op->o_bd->bd_info;
 448
 449                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 450                 rs->sr_err = be_entry_get_rw( op, &op->o_req_ndn,
 451                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
 452
 453                 /* FIXME: couldn't the entry be added before deletion? */
 454                 if ( rs->sr_err == LDAP_SUCCESS && e != NULL ) {
 455                         slap_callback   *sc;
 456
 457                         be_entry_release_r( op, e );
 458                         e = NULL;
 459
 460                         sc = op->o_tmpalloc( sizeof( slap_callback ), op->o_tmpmemctx );
 461                         sc->sc_cleanup = dds_freeit_cb;
 462                         sc->sc_response = dds_counter_cb;
 463                         sc->sc_private = di;
 464                         sc->sc_next = op->o_callback;
 465
 466                         op->o_callback = sc;
 467                 }
 468                 op->o_bd->bd_info = bi;
 469         }
 470
 471         return SLAP_CB_CONTINUE;
 472 }
 473
 474 static int
 475 dds_op_modify( Operation *op, SlapReply *rs )
 476 {
 477         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 478         dds_info_t      *di = (dds_info_t *)on->on_bi.bi_private;
 479         Modifications   *mod;
 480         Entry           *e = NULL;
 481         BackendInfo     *bi = op->o_bd->bd_info;
 482         int             was_dynamicObject = 0,
 483                         is_dynamicObject = 0;
 484         struct berval   bv_entryTtl = BER_BVNULL;
 485         time_t          entryTtl = 0;
 486         char            textbuf[ SLAP_TEXT_BUFLEN ];
 487
 488         if ( DDS_OFF( di ) ) {
 489                 return SLAP_CB_CONTINUE;
 490         }
 491
 492         /* bv_entryTtl stores the string representation of the entryTtl
 493          * across modifies for consistency checks of the final value;
 494          * the bv_val points to a static buffer; the bv_len is zero when
 495          * the attribute is deleted.
 496          * entryTtl stores the integer representation of the entryTtl;
 497          * its value is -1 when the attribute is deleted; it is 0 only
 498          * if no modifications of the entryTtl occurred, as an entryTtl
 499          * of 0 is invalid. */
 500         bv_entryTtl.bv_val = textbuf;
 501
 502         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 503         rs->sr_err = be_entry_get_rw( op, &op->o_req_ndn,
 504                 slap_schema.si_oc_dynamicObject, slap_schema.si_ad_entryTtl, 0, &e );
 505         if ( rs->sr_err == LDAP_SUCCESS && e != NULL ) {
 506                 Attribute       *a = attr_find( e->e_attrs, slap_schema.si_ad_entryTtl );
 507
 508                 /* the value of the entryTtl is saved for later checks */
 509                 if ( a != NULL ) {
 510                         unsigned long   ttl;
 511                         int             rc;
 512
 513                         bv_entryTtl.bv_len = a->a_nvals[ 0 ].bv_len;
 514                         AC_MEMCPY( bv_entryTtl.bv_val, a->a_nvals[ 0 ].bv_val, bv_entryTtl.bv_len );
 515                         bv_entryTtl.bv_val[ bv_entryTtl.bv_len ] = '\0';
 516                         rc = lutil_atoul( &ttl, bv_entryTtl.bv_val );
 517                         assert( rc == 0 );
 518                         entryTtl = (time_t)ttl;
 519                 }
 520
 521                 be_entry_release_r( op, e );
 522                 e = NULL;
 523                 was_dynamicObject = is_dynamicObject = 1;
 524         }
 525         op->o_bd->bd_info = bi;
 526
 527         rs->sr_err = LDAP_SUCCESS;
 528         for ( mod = op->orm_modlist; mod; mod = mod->sml_next ) {
 529                 if ( mod->sml_desc == slap_schema.si_ad_objectClass ) {
 530                         int             i;
 531                         ObjectClass     *oc;
 532
 533                         switch ( mod->sml_op ) {
 534                         case LDAP_MOD_DELETE:
 535                                 if ( mod->sml_values == NULL ) {
 536                                         is_dynamicObject = 0;
 537                                         break;
 538                                 }
 539
 540                                 for ( i = 0; !BER_BVISNULL( &mod->sml_values[ i ] ); i++ ) {
 541                                         oc = oc_bvfind( &mod->sml_values[ i ] );
 542                                         if ( oc == slap_schema.si_oc_dynamicObject ) {
 543                                                 is_dynamicObject = 0;
 544                                                 break;
 545                                         }
 546                                 }
 547
 548                                 break;
 549
 550                         case LDAP_MOD_REPLACE:
 551                                 if ( mod->sml_values == NULL ) {
 552                                         is_dynamicObject = 0;
 553                                         break;
 554                                 }
 555                                 /* fallthru */
 556
 557                         case LDAP_MOD_ADD:
 558                                 for ( i = 0; !BER_BVISNULL( &mod->sml_values[ i ] ); i++ ) {
 559                                         oc = oc_bvfind( &mod->sml_values[ i ] );
 560                                         if ( oc == slap_schema.si_oc_dynamicObject ) {
 561                                                 is_dynamicObject = 1;
 562                                                 break;
 563                                         }
 564                                 }
 565                                 break;
 566                         }
 567
 568                 } else if ( mod->sml_desc == slap_schema.si_ad_entryTtl ) {
 569                         unsigned long   ttl;
 570                         int             rc;
 571
 572                         switch ( mod->sml_op ) {
 573                         case LDAP_MOD_DELETE:
 574                                 if ( mod->sml_values != NULL ) {
 575                                         if ( BER_BVISEMPTY( &bv_entryTtl )
 576                                                 || !bvmatch( &bv_entryTtl, &mod->sml_values[ 0 ] ) )
 577                                         {
 578                                                 rs->sr_err = backend_attribute( op, NULL, &op->o_req_ndn,
 579                                                         slap_schema.si_ad_entry, NULL, ACL_DISCLOSE );
 580                                                 if ( rs->sr_err == LDAP_INSUFFICIENT_ACCESS ) {
 581                                                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 582
 583                                                 } else {
 584                                                         rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 585                                                 }
 586                                                 goto done;
 587                                         }
 588                                 }
 589                                 bv_entryTtl.bv_len = 0;
 590                                 entryTtl = -1;
 591                                 break;
 592
 593                         case LDAP_MOD_REPLACE:
 594                                 bv_entryTtl.bv_len = 0;
 595                                 entryTtl = -1;
 596                                 /* fallthru */
 597
 598                         case SLAP_MOD_SOFTADD: /* FIXME? */
 599                         case LDAP_MOD_ADD:
 600                                 assert( mod->sml_values != NULL );
 601                                 assert( BER_BVISNULL( &mod->sml_values[ 1 ] ) );
 602
 603                                 if ( !BER_BVISEMPTY( &bv_entryTtl ) ) {
 604                                         rs->sr_err = backend_attribute( op, NULL, &op->o_req_ndn,
 605                                                 slap_schema.si_ad_entry, NULL, ACL_DISCLOSE );
 606                                         if ( rs->sr_err == LDAP_INSUFFICIENT_ACCESS ) {
 607                                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
 608
 609                                         } else {
 610                                                 rs->sr_text = "attribute 'entryTtl' cannot have multiple values";
 611                                                 rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 612                                         }
 613                                         goto done;
 614                                 }
 615
 616                                 rc = lutil_atoul( &ttl, mod->sml_values[ 0 ].bv_val );
 617                                 assert( rc == 0 );
 618                                 if ( ttl > DDS_RF2589_MAX_TTL ) {
 619                                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 620                                         rs->sr_text = "invalid time-to-live for dynamicObject";
 621                                         goto done;
 622                                 }
 623
 624                                 if ( ttl <= 0 || ttl > di->di_max_ttl ) {
 625                                         /* FIXME: I don't understand if this has to be an error,
 626                                          * or an indication that the requested Ttl has been
 627                                          * shortened to di->di_max_ttl >= 1 day */
 628                                         rs->sr_err = LDAP_SIZELIMIT_EXCEEDED;
 629                                         rs->sr_text = "time-to-live for dynamicObject exceeds administrative limit";
 630                                         goto done;
 631                                 }
 632
 633                                 entryTtl = (time_t)ttl;
 634                                 bv_entryTtl.bv_len = mod->sml_values[ 0 ].bv_len;
 635                                 AC_MEMCPY( bv_entryTtl.bv_val, mod->sml_values[ 0 ].bv_val, bv_entryTtl.bv_len );
 636                                 bv_entryTtl.bv_val[ bv_entryTtl.bv_len ] = '\0';
 637                                 break;
 638
 639                         case LDAP_MOD_INCREMENT:
 640                                 if ( BER_BVISEMPTY( &bv_entryTtl ) ) {
 641                                         rs->sr_err = backend_attribute( op, NULL, &op->o_req_ndn,
 642                                                 slap_schema.si_ad_entry, NULL, ACL_DISCLOSE );
 643                                         if ( rs->sr_err == LDAP_INSUFFICIENT_ACCESS ) {
 644                                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
 645
 646                                         } else {
 647                                                 rs->sr_err = LDAP_NO_SUCH_ATTRIBUTE;
 648                                                 rs->sr_text = "modify/increment: entryTtl: no such attribute";
 649                                         }
 650                                         goto done;
 651                                 }
 652
 653                                 entryTtl++;
 654                                 if ( entryTtl > DDS_RF2589_MAX_TTL ) {
 655                                         rs->sr_err = LDAP_PROTOCOL_ERROR;
 656                                         rs->sr_text = "invalid time-to-live for dynamicObject";
 657
 658                                 } else if ( entryTtl <= 0 || entryTtl > di->di_max_ttl ) {
 659                                         /* FIXME: I don't understand if this has to be an error,
 660                                          * or an indication that the requested Ttl has been
 661                                          * shortened to di->di_max_ttl >= 1 day */
 662                                         rs->sr_err = LDAP_SIZELIMIT_EXCEEDED;
 663                                         rs->sr_text = "time-to-live for dynamicObject exceeds administrative limit";
 664                                 }
 665
 666                                 if ( rs->sr_err != LDAP_SUCCESS ) {
 667                                         rc = backend_attribute( op, NULL, &op->o_req_ndn,
 668                                                 slap_schema.si_ad_entry, NULL, ACL_DISCLOSE );
 669                                         if ( rc == LDAP_INSUFFICIENT_ACCESS ) {
 670                                                 rs->sr_text = NULL;
 671                                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
 672
 673                                         }
 674                                         goto done;
 675                                 }
 676
 677                                 bv_entryTtl.bv_len = snprintf( textbuf, sizeof( textbuf ), "%ld", entryTtl );
 678                                 break;
 679
 680                         default:
 681                                 assert( 0 );
 682                                 break;
 683                         }
 684
 685                 } else if ( mod->sml_desc == ad_entryExpireTimestamp ) {
 686                         /* should have been trapped earlier */
 687                         assert( mod->sml_flags & SLAP_MOD_INTERNAL );
 688                 }
 689         }
 690
 691 done:;
 692         if ( rs->sr_err == LDAP_SUCCESS ) {
 693                 int     rc;
 694
 695                 /* FIXME: this could be allowed when the Relax control is used...
 696                  * in that case:
 697                  *
 698                  * TODO
 699                  *
 700                  *      static => dynamic:
 701                  *              entryTtl must be provided; add
 702                  *              entryExpireTimestamp accordingly
 703                  *
 704                  *      dynamic => static:
 705                  *              entryTtl must be removed; remove
 706                  *              entryTimestamp accordingly
 707                  *
 708                  * ... but we need to make sure that there are no subordinate
 709                  * issues...
 710                  */
 711                 rc = is_dynamicObject - was_dynamicObject;
 712                 if ( rc ) {
 713 #if 0 /* fix subordinate issues first */
 714                         if ( get_relax( op ) ) {
 715                                 switch ( rc ) {
 716                                 case -1:
 717                                         /* need to delete entryTtl to have a consistent entry */
 718                                         if ( entryTtl != -1 ) {
 719                                                 rs->sr_text = "objectClass modification from dynamicObject to static entry requires entryTtl deletion";
 720                                                 rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 721                                         }
 722                                         break;
 723
 724                                 case 1:
 725                                         /* need to add entryTtl to have a consistent entry */
 726                                         if ( entryTtl <= 0 ) {
 727                                                 rs->sr_text = "objectClass modification from static entry to dynamicObject requires entryTtl addition";
 728                                                 rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 729                                         }
 730                                         break;
 731                                 }
 732
 733                         } else
 734 #endif
 735                         {
 736                                 switch ( rc ) {
 737                                 case -1:
 738                                         rs->sr_text = "objectClass modification cannot turn dynamicObject into static entry";
 739                                         break;
 740
 741                                 case 1:
 742                                         rs->sr_text = "objectClass modification cannot turn static entry into dynamicObject";
 743                                         break;
 744                                 }
 745                                 rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
 746                         }
 747
 748                         if ( rc != LDAP_SUCCESS ) {
 749                                 rc = backend_attribute( op, NULL, &op->o_req_ndn,
 750                                         slap_schema.si_ad_entry, NULL, ACL_DISCLOSE );
 751                                 if ( rc == LDAP_INSUFFICIENT_ACCESS ) {
 752                                         rs->sr_text = NULL;
 753                                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 754                                 }
 755                         }
 756                 }
 757         }
 758
 759         if ( rs->sr_err == LDAP_SUCCESS && entryTtl != 0 ) {
 760                 Modifications   *tmpmod = NULL, **modp;
 761
 762                 for ( modp = &op->orm_modlist; *modp; modp = &(*modp)->sml_next )
 763                         ;
 764
 765                 tmpmod = ch_calloc( 1, sizeof( Modifications ) );
 766                 tmpmod->sml_flags = SLAP_MOD_INTERNAL;
 767                 tmpmod->sml_type = ad_entryExpireTimestamp->ad_cname;
 768                 tmpmod->sml_desc = ad_entryExpireTimestamp;
 769
 770                 *modp = tmpmod;
 771
 772                 if ( entryTtl == -1 ) {
 773                         /* delete entryExpireTimestamp */
 774                         tmpmod->sml_op = LDAP_MOD_DELETE;
 775
 776                 } else {
 777                         time_t          expire;
 778                         char            tsbuf[ LDAP_LUTIL_GENTIME_BUFSIZE ];
 779                         struct berval   bv;
 780
 781                         /* keep entryExpireTimestamp consistent
 782                          * with entryTtl */
 783                         expire = slap_get_time() + entryTtl;
 784                         bv.bv_val = tsbuf;
 785                         bv.bv_len = sizeof( tsbuf );
 786                         slap_timestamp( &expire, &bv );
 787
 788                         tmpmod->sml_op = LDAP_MOD_REPLACE;
 789                         value_add_one( &tmpmod->sml_values, &bv );
 790                         value_add_one( &tmpmod->sml_nvalues, &bv );
 791                         tmpmod->sml_numvals = 1;
 792                 }
 793         }
 794
 795         if ( rs->sr_err ) {
 796                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 797                 send_ldap_result( op, rs );
 798                 return rs->sr_err;
 799         }
 800
 801         return SLAP_CB_CONTINUE;
 802 }
 803
 804 static int
 805 dds_op_rename( Operation *op, SlapReply *rs )
 806 {
 807         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 808         dds_info_t      *di = on->on_bi.bi_private;
 809
 810         if ( DDS_OFF( di ) ) {
 811                 return SLAP_CB_CONTINUE;
 812         }
 813
 814         /* we don't allow dynamicObjects to have static subordinates */
 815         if ( op->orr_nnewSup != NULL ) {
 816                 Entry           *e = NULL;
 817                 BackendInfo     *bi = op->o_bd->bd_info;
 818                 int             is_dynamicObject = 0,
 819                                 rc;
 820
 821                 rs->sr_err = LDAP_SUCCESS;
 822
 823                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 824                 rc = be_entry_get_rw( op, &op->o_req_ndn,
 825                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
 826                 if ( rc == LDAP_SUCCESS && e != NULL ) {
 827                         be_entry_release_r( op, e );
 828                         e = NULL;
 829                         is_dynamicObject = 1;
 830                 }
 831
 832                 rc = be_entry_get_rw( op, op->orr_nnewSup,
 833                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
 834                 if ( rc == LDAP_SUCCESS && e != NULL ) {
 835                         if ( !is_dynamicObject ) {
 836                                 /* return referral only if "disclose"
 837                                  * is granted on the object */
 838                                 if ( ! access_allowed( op, e,
 839                                                 slap_schema.si_ad_entry,
 840                                                 NULL, ACL_DISCLOSE, NULL ) )
 841                                 {
 842                                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 843                                         send_ldap_result( op, rs );
 844
 845                                 } else {
 846                                         send_ldap_error( op, rs, LDAP_CONSTRAINT_VIOLATION,
 847                                                 "static entry cannot have dynamicObject as newSuperior" );
 848                                 }
 849                         }
 850                         be_entry_release_r( op, e );
 851                 }
 852                 op->o_bd->bd_info = bi;
 853                 if ( rs->sr_err != LDAP_SUCCESS ) {
 854                         return rs->sr_err;
 855                 }
 856         }
 857
 858         return SLAP_CB_CONTINUE;
 859 }
 860
 861 static int
 862 slap_parse_refresh(
 863         struct berval   *in,
 864         struct berval   *ndn,
 865         time_t          *ttl,
 866         const char      **text,
 867         void            *ctx )
 868 {
 869         int                     rc = LDAP_SUCCESS;
 870         ber_tag_t               tag;
 871         ber_len_t               len = -1;
 872         BerElementBuffer        berbuf;
 873         BerElement              *ber = (BerElement *)&berbuf;
 874         struct berval           reqdata = BER_BVNULL;
 875         int                     tmp;
 876
 877         *text = NULL;
 878
 879         if ( ndn ) {
 880                 BER_BVZERO( ndn );
 881         }
 882
 883         if ( in == NULL || in->bv_len == 0 ) {
 884                 *text = "empty request data field in refresh exop";
 885                 return LDAP_PROTOCOL_ERROR;
 886         }
 887
 888         ber_dupbv_x( &reqdata, in, ctx );
 889
 890         /* ber_init2 uses reqdata directly, doesn't allocate new buffers */
 891         ber_init2( ber, &reqdata, 0 );
 892
 893         tag = ber_scanf( ber, "{" /*}*/ );
 894
 895         if ( tag == LBER_ERROR ) {
 896                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 897                         "slap_parse_refresh: decoding error.\n" );
 898                 goto decoding_error;
 899         }
 900
 901         tag = ber_peek_tag( ber, &len );
 902         if ( tag != LDAP_TAG_EXOP_REFRESH_REQ_DN ) {
 903                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 904                         "slap_parse_refresh: decoding error.\n" );
 905                 goto decoding_error;
 906         }
 907
 908         if ( ndn ) {
 909                 struct berval   dn;
 910
 911                 tag = ber_scanf( ber, "m", &dn );
 912                 if ( tag == LBER_ERROR ) {
 913                         Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 914                                 "slap_parse_refresh: DN parse failed.\n" );
 915                         goto decoding_error;
 916                 }
 917
 918                 rc = dnNormalize( 0, NULL, NULL, &dn, ndn, ctx );
 919                 if ( rc != LDAP_SUCCESS ) {
 920                         *text = "invalid DN in refresh exop request data";
 921                         goto done;
 922                 }
 923
 924         } else {
 925                 tag = ber_scanf( ber, "x" /* "m" */ );
 926                 if ( tag == LBER_DEFAULT ) {
 927                         goto decoding_error;
 928                 }
 929         }
 930
 931         tag = ber_peek_tag( ber, &len );
 932
 933         if ( tag != LDAP_TAG_EXOP_REFRESH_REQ_TTL ) {
 934                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 935                         "slap_parse_refresh: decoding error.\n" );
 936                 goto decoding_error;
 937         }
 938
 939         tag = ber_scanf( ber, "i", &tmp );
 940         if ( tag == LBER_ERROR ) {
 941                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 942                         "slap_parse_refresh: TTL parse failed.\n" );
 943                 goto decoding_error;
 944         }
 945
 946         if ( ttl ) {
 947                 *ttl = tmp;
 948         }
 949
 950         tag = ber_peek_tag( ber, &len );
 951
 952         if ( tag != LBER_DEFAULT || len != 0 ) {
 953 decoding_error:;
 954                 Log1( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 955                         "slap_parse_refresh: decoding error, len=%ld\n",
 956                         (long)len );
 957                 rc = LDAP_PROTOCOL_ERROR;
 958                 *text = "data decoding error";
 959
 960 done:;
 961                 if ( ndn && !BER_BVISNULL( ndn ) ) {
 962                         slap_sl_free( ndn->bv_val, ctx );
 963                         BER_BVZERO( ndn );
 964                 }
 965         }
 966
 967         if ( !BER_BVISNULL( &reqdata ) ) {
 968                 ber_memfree_x( reqdata.bv_val, ctx );
 969         }
 970
 971         return rc;
 972 }
 973
 974 static int
 975 dds_op_extended( Operation *op, SlapReply *rs )
 976 {
 977         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 978         dds_info_t      *di = on->on_bi.bi_private;
 979
 980         if ( DDS_OFF( di ) ) {
 981                 return SLAP_CB_CONTINUE;
 982         }
 983
 984         if ( bvmatch( &op->ore_reqoid, &slap_EXOP_REFRESH ) ) {
 985                 Entry           *e = NULL;
 986                 time_t          ttl;
 987                 BackendDB       db = *op->o_bd;
 988                 SlapReply       rs2 = { REP_RESULT };
 989                 Operation       op2 = *op;
 990                 slap_callback   sc = { 0 };
 991                 Modifications   ttlmod = { { 0 } };
 992                 struct berval   ttlvalues[ 2 ];
 993                 char            ttlbuf[] = "31557600";
 994
 995                 rs->sr_err = slap_parse_refresh( op->ore_reqdata, NULL, &ttl,
 996                         &rs->sr_text, NULL );
 997                 assert( rs->sr_err == LDAP_SUCCESS );
 998
 999                 if ( ttl <= 0 || ttl > DDS_RF2589_MAX_TTL ) {
1000                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1001                         rs->sr_text = "invalid time-to-live for dynamicObject";
1002                         return rs->sr_err;
1003                 }
1004
1005                 if ( ttl > di->di_max_ttl ) {
1006                         /* FIXME: I don't understand if this has to be an error,
1007                          * or an indication that the requested Ttl has been
1008                          * shortened to di->di_max_ttl >= 1 day */
1009                         rs->sr_err = LDAP_SIZELIMIT_EXCEEDED;
1010                         rs->sr_text = "time-to-live for dynamicObject exceeds limit";
1011                         return rs->sr_err;
1012                 }
1013
1014                 if ( di->di_min_ttl && ttl < di->di_min_ttl ) {
1015                         ttl = di->di_min_ttl;
1016                 }
1017
1018                 /* This does not apply to multi-master case */
1019                 if ( !( !SLAP_SINGLE_SHADOW( op->o_bd ) || be_isupdate( op ) ) ) {
1020                         /* we SHOULD return a referral in this case */
1021                         BerVarray defref = op->o_bd->be_update_refs
1022                                 ? op->o_bd->be_update_refs : default_referral;
1023
1024                         if ( defref != NULL ) {
1025                                 rs->sr_ref = referral_rewrite( op->o_bd->be_update_refs,
1026                                         NULL, NULL, LDAP_SCOPE_DEFAULT );
1027                                 if ( rs->sr_ref ) {
1028                                         rs->sr_flags |= REP_REF_MUSTBEFREED;
1029                                 } else {
1030                                         rs->sr_ref = defref;
1031                                 }
1032                                 rs->sr_err = LDAP_REFERRAL;
1033
1034                         } else {
1035                                 rs->sr_text = "shadow context; no update referral";
1036                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1037                         }
1038
1039                         return rs->sr_err;
1040                 }
1041
1042                 assert( !BER_BVISNULL( &op->o_req_ndn ) );
1043
1044
1045
1046                 /* check if exists but not dynamicObject */
1047                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1048                 rs->sr_err = be_entry_get_rw( op, &op->o_req_ndn,
1049                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
1050                 if ( rs->sr_err != LDAP_SUCCESS ) {
1051                         rs->sr_err = be_entry_get_rw( op, &op->o_req_ndn,
1052                                 NULL, NULL, 0, &e );
1053                         if ( rs->sr_err == LDAP_SUCCESS && e != NULL ) {
1054                                 /* return referral only if "disclose"
1055                                  * is granted on the object */
1056                                 if ( ! access_allowed( op, e,
1057                                                 slap_schema.si_ad_entry,
1058                                                 NULL, ACL_DISCLOSE, NULL ) )
1059                                 {
1060                                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
1061
1062                                 } else {
1063                                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
1064                                         rs->sr_text = "refresh operation only applies to dynamic objects";
1065                                 }
1066                                 be_entry_release_r( op, e );
1067
1068                         } else {
1069                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
1070                         }
1071                         return rs->sr_err;
1072
1073                 } else if ( e != NULL ) {
1074                         be_entry_release_r( op, e );
1075                 }
1076
1077                 /* we require manage privileges on the entryTtl,
1078                  * and fake a Relax control */
1079                 op2.o_tag = LDAP_REQ_MODIFY;
1080                 op2.o_bd = &db;
1081                 db.bd_info = (BackendInfo *)on->on_info;
1082                 op2.o_callback = &sc;
1083                 sc.sc_response = slap_null_cb;
1084                 op2.o_relax = SLAP_CONTROL_CRITICAL;
1085                 op2.orm_modlist = &ttlmod;
1086
1087                 ttlmod.sml_op = LDAP_MOD_REPLACE;
1088                 ttlmod.sml_flags = SLAP_MOD_MANAGING;
1089                 ttlmod.sml_desc = slap_schema.si_ad_entryTtl;
1090                 ttlmod.sml_values = ttlvalues;
1091                 ttlvalues[ 0 ].bv_val = ttlbuf;
1092                 ttlvalues[ 0 ].bv_len = snprintf( ttlbuf, sizeof( ttlbuf ), "%ld", ttl );
1093                 BER_BVZERO( &ttlvalues[ 1 ] );
1094
1095                 /* the entryExpireTimestamp is added by modify */
1096                 rs->sr_err = op2.o_bd->be_modify( &op2, &rs2 );
1097
1098                 if ( ttlmod.sml_next != NULL ) {
1099                         slap_mods_free( ttlmod.sml_next, 1 );
1100                 }
1101
1102                 if ( rs->sr_err == LDAP_SUCCESS ) {
1103                         int                     rc;
1104                         BerElementBuffer        berbuf;
1105                         BerElement              *ber = (BerElement *)&berbuf;
1106
1107                         if ( rs->sr_err == LDAP_SUCCESS ) {
1108                                 ber_init_w_nullc( ber, LBER_USE_DER );
1109
1110                                 rc = ber_printf( ber, "{tiN}", LDAP_TAG_EXOP_REFRESH_RES_TTL, (int)ttl );
1111
1112                                 if ( rc < 0 ) {
1113                                         rs->sr_err = LDAP_OTHER;
1114                                         rs->sr_text = "internal error";
1115
1116                                 } else {
1117                                         (void)ber_flatten( ber, &rs->sr_rspdata );
1118                                         rs->sr_rspoid = ch_strdup( slap_EXOP_REFRESH.bv_val );
1119
1120                                         Log3( LDAP_DEBUG_TRACE, LDAP_LEVEL_INFO,
1121                                                 "%s REFRESH dn=\"%s\" TTL=%ld\n",
1122                                                 op->o_log_prefix, op->o_req_ndn.bv_val, ttl );
1123                                 }
1124
1125                                 ber_free_buf( ber );
1126                         }
1127                 }
1128
1129                 return rs->sr_err;
1130         }
1131
1132         return SLAP_CB_CONTINUE;
1133 }
1134
1135 enum {
1136         DDS_STATE = 1,
1137         DDS_MAXTTL,
1138         DDS_MINTTL,
1139         DDS_DEFAULTTTL,
1140         DDS_INTERVAL,
1141         DDS_TOLERANCE,
1142         DDS_MAXDYNAMICOBJS,
1143
1144         DDS_LAST
1145 };
1146
1147 static ConfigDriver dds_cfgen;
1148 #if 0
1149 static ConfigLDAPadd dds_ldadd;
1150 static ConfigCfAdd dds_cfadd;
1151 #endif
1152
1153 static ConfigTable dds_cfg[] = {
1154         { "dds-state", "on|off",
1155                 2, 2, 0, ARG_MAGIC|ARG_ON_OFF|DDS_STATE, dds_cfgen,
1156                 "( OLcfgOvAt:9.1 NAME 'olcDDSstate' "
1157                         "DESC 'RFC2589 Dynamic directory services state' "
1158                         "SYNTAX OMsBoolean "
1159                         "SINGLE-VALUE )", NULL, NULL },
1160         { "dds-max-ttl", "ttl",
1161                 2, 2, 0, ARG_MAGIC|DDS_MAXTTL, dds_cfgen,
1162                 "( OLcfgOvAt:9.2 NAME 'olcDDSmaxTtl' "
1163                         "DESC 'RFC2589 Dynamic directory services max TTL' "
1164                         "SYNTAX OMsDirectoryString "
1165                         "SINGLE-VALUE )", NULL, NULL },
1166         { "dds-min-ttl", "ttl",
1167                 2, 2, 0, ARG_MAGIC|DDS_MINTTL, dds_cfgen,
1168                 "( OLcfgOvAt:9.3 NAME 'olcDDSminTtl' "
1169                         "DESC 'RFC2589 Dynamic directory services min TTL' "
1170                         "SYNTAX OMsDirectoryString "
1171                         "SINGLE-VALUE )", NULL, NULL },
1172         { "dds-default-ttl", "ttl",
1173                 2, 2, 0, ARG_MAGIC|DDS_DEFAULTTTL, dds_cfgen,
1174                 "( OLcfgOvAt:9.4 NAME 'olcDDSdefaultTtl' "
1175                         "DESC 'RFC2589 Dynamic directory services default TTL' "
1176                         "SYNTAX OMsDirectoryString "
1177                         "SINGLE-VALUE )", NULL, NULL },
1178         { "dds-interval", "interval",
1179                 2, 2, 0, ARG_MAGIC|DDS_INTERVAL, dds_cfgen,
1180                 "( OLcfgOvAt:9.5 NAME 'olcDDSinterval' "
1181                         "DESC 'RFC2589 Dynamic directory services expiration "
1182                                 "task run interval' "
1183                         "SYNTAX OMsDirectoryString "
1184                         "SINGLE-VALUE )", NULL, NULL },
1185         { "dds-tolerance", "ttl",
1186                 2, 2, 0, ARG_MAGIC|DDS_TOLERANCE, dds_cfgen,
1187                 "( OLcfgOvAt:9.6 NAME 'olcDDStolerance' "
1188                         "DESC 'RFC2589 Dynamic directory services additional "
1189                                 "TTL in expiration scheduling' "
1190                         "SYNTAX OMsDirectoryString "
1191                         "SINGLE-VALUE )", NULL, NULL },
1192         { "dds-max-dynamicObjects", "num",
1193                 2, 2, 0, ARG_MAGIC|ARG_INT|DDS_MAXDYNAMICOBJS, dds_cfgen,
1194                 "( OLcfgOvAt:9.7 NAME 'olcDDSmaxDynamicObjects' "
1195                         "DESC 'RFC2589 Dynamic directory services max number of dynamic objects' "
1196                         "SYNTAX OMsInteger "
1197                         "SINGLE-VALUE )", NULL, NULL },
1198         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
1199 };
1200
1201 static ConfigOCs dds_ocs[] = {
1202         { "( OLcfgOvOc:9.1 "
1203                 "NAME 'olcDDSConfig' "
1204                 "DESC 'RFC2589 Dynamic directory services configuration' "
1205                 "SUP olcOverlayConfig "
1206                 "MAY ( "
1207                         "olcDDSstate "
1208                         "$ olcDDSmaxTtl "
1209                         "$ olcDDSminTtl "
1210                         "$ olcDDSdefaultTtl "
1211                         "$ olcDDSinterval "
1212                         "$ olcDDStolerance "
1213                         "$ olcDDSmaxDynamicObjects "
1214                 " ) "
1215                 ")", Cft_Overlay, dds_cfg, NULL, NULL /* dds_cfadd */ },
1216         { NULL, 0, NULL }
1217 };
1218
1219 #if 0
1220 static int
1221 dds_ldadd( CfEntryInfo *p, Entry *e, ConfigArgs *ca )
1222 {
1223         return LDAP_SUCCESS;
1224 }
1225
1226 static int
1227 dds_cfadd( Operation *op, SlapReply *rs, Entry *p, ConfigArgs *ca )
1228 {
1229         return 0;
1230 }
1231 #endif
1232
1233 static int
1234 dds_cfgen( ConfigArgs *c )
1235 {
1236         slap_overinst   *on = (slap_overinst *)c->bi;
1237         dds_info_t      *di = on->on_bi.bi_private;
1238         int             rc = 0;
1239         unsigned long   t;
1240
1241
1242         if ( c->op == SLAP_CONFIG_EMIT ) {
1243                 char            buf[ SLAP_TEXT_BUFLEN ];
1244                 struct berval   bv;
1245
1246                 switch( c->type ) {
1247                 case DDS_STATE:
1248                         c->value_int = !DDS_OFF( di );
1249                         break;
1250
1251                 case DDS_MAXTTL:
1252                         lutil_unparse_time( buf, sizeof( buf ), di->di_max_ttl );
1253                         ber_str2bv( buf, 0, 0, &bv );
1254                         value_add_one( &c->rvalue_vals, &bv );
1255                         break;
1256
1257                 case DDS_MINTTL:
1258                         if ( di->di_min_ttl ) {
1259                                 lutil_unparse_time( buf, sizeof( buf ), di->di_min_ttl );
1260                                 ber_str2bv( buf, 0, 0, &bv );
1261                                 value_add_one( &c->rvalue_vals, &bv );
1262
1263                         } else {
1264                                 rc = 1;
1265                         }
1266                         break;
1267
1268                 case DDS_DEFAULTTTL:
1269                         if ( di->di_default_ttl ) {
1270                                 lutil_unparse_time( buf, sizeof( buf ), di->di_default_ttl );
1271                                 ber_str2bv( buf, 0, 0, &bv );
1272                                 value_add_one( &c->rvalue_vals, &bv );
1273
1274                         } else {
1275                                 rc = 1;
1276                         }
1277                         break;
1278
1279                 case DDS_INTERVAL:
1280                         if ( di->di_interval ) {
1281                                 lutil_unparse_time( buf, sizeof( buf ), di->di_interval );
1282                                 ber_str2bv( buf, 0, 0, &bv );
1283                                 value_add_one( &c->rvalue_vals, &bv );
1284
1285                         } else {
1286                                 rc = 1;
1287                         }
1288                         break;
1289
1290                 case DDS_TOLERANCE:
1291                         if ( di->di_tolerance ) {
1292                                 lutil_unparse_time( buf, sizeof( buf ), di->di_tolerance );
1293                                 ber_str2bv( buf, 0, 0, &bv );
1294                                 value_add_one( &c->rvalue_vals, &bv );
1295
1296                         } else {
1297                                 rc = 1;
1298                         }
1299                         break;
1300
1301                 case DDS_MAXDYNAMICOBJS:
1302                         if ( di->di_max_dynamicObjects > 0 ) {
1303                                 c->value_int = di->di_max_dynamicObjects;
1304
1305                         } else {
1306                                 rc = 1;
1307                         }
1308                         break;
1309
1310                 default:
1311                         rc = 1;
1312                         break;
1313                 }
1314
1315                 return rc;
1316
1317         } else if ( c->op == LDAP_MOD_DELETE ) {
1318                 switch( c->type ) {
1319                 case DDS_STATE:
1320                         di->di_flags &= ~DDS_FOFF;
1321                         break;
1322
1323                 case DDS_MAXTTL:
1324                         di->di_min_ttl = DDS_RF2589_DEFAULT_TTL;
1325                         break;
1326
1327                 case DDS_MINTTL:
1328                         di->di_min_ttl = 0;
1329                         break;
1330
1331                 case DDS_DEFAULTTTL:
1332                         di->di_default_ttl = 0;
1333                         break;
1334
1335                 case DDS_INTERVAL:
1336                         di->di_interval = 0;
1337                         break;
1338
1339                 case DDS_TOLERANCE:
1340                         di->di_tolerance = 0;
1341                         break;
1342
1343                 case DDS_MAXDYNAMICOBJS:
1344                         di->di_max_dynamicObjects = 0;
1345                         break;
1346
1347                 default:
1348                         rc = 1;
1349                         break;
1350                 }
1351
1352                 return rc;
1353         }
1354
1355         switch ( c->type ) {
1356         case DDS_STATE:
1357                 if ( c->value_int ) {
1358                         di->di_flags &= ~DDS_FOFF;
1359
1360                 } else {
1361                         di->di_flags |= DDS_FOFF;
1362                 }
1363                 break;
1364
1365         case DDS_MAXTTL:
1366                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1367                         snprintf( c->cr_msg, sizeof( c->cr_msg),
1368                                 "DDS unable to parse dds-max-ttl \"%s\"",
1369                                 c->argv[ 1 ] );
1370                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1371                                 "%s: %s.\n", c->log, c->cr_msg );
1372                         return 1;
1373                 }
1374
1375                 if ( t < DDS_RF2589_DEFAULT_TTL || t > DDS_RF2589_MAX_TTL ) {
1376                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1377                                 "DDS invalid dds-max-ttl=%ld; must be between %d and %d",
1378                                 t, DDS_RF2589_DEFAULT_TTL, DDS_RF2589_MAX_TTL );
1379                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1380                                 "%s: %s.\n", c->log, c->cr_msg );
1381                         return 1;
1382                 }
1383
1384                 di->di_max_ttl = (time_t)t;
1385                 break;
1386
1387         case DDS_MINTTL:
1388                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1389                         snprintf( c->cr_msg, sizeof( c->cr_msg),
1390                                 "DDS unable to parse dds-min-ttl \"%s\"",
1391                                 c->argv[ 1 ] );
1392                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1393                                 "%s: %s.\n", c->log, c->cr_msg );
1394                         return 1;
1395                 }
1396
1397                 if ( t < 0 || t > DDS_RF2589_MAX_TTL ) {
1398                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1399                                 "DDS invalid dds-min-ttl=%ld",
1400                                 t );
1401                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1402                                 "%s: %s.\n", c->log, c->cr_msg );
1403                         return 1;
1404                 }
1405
1406                 if ( t == 0 ) {
1407                         di->di_min_ttl = DDS_RF2589_DEFAULT_TTL;
1408
1409                 } else {
1410                         di->di_min_ttl = (time_t)t;
1411                 }
1412                 break;
1413
1414         case DDS_DEFAULTTTL:
1415                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1416                         snprintf( c->cr_msg, sizeof( c->cr_msg),
1417                                 "DDS unable to parse dds-default-ttl \"%s\"",
1418                                 c->argv[ 1 ] );
1419                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1420                                 "%s: %s.\n", c->log, c->cr_msg );
1421                         return 1;
1422                 }
1423
1424                 if ( t < 0 || t > DDS_RF2589_MAX_TTL ) {
1425                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1426                                 "DDS invalid dds-default-ttl=%ld",
1427                                 t );
1428                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1429                                 "%s: %s.\n", c->log, c->cr_msg );
1430                         return 1;
1431                 }
1432
1433                 if ( t == 0 ) {
1434                         di->di_default_ttl = DDS_RF2589_DEFAULT_TTL;
1435
1436                 } else {
1437                         di->di_default_ttl = (time_t)t;
1438                 }
1439                 break;
1440
1441         case DDS_INTERVAL:
1442                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1443                         snprintf( c->cr_msg, sizeof( c->cr_msg),
1444                                 "DDS unable to parse dds-interval \"%s\"",
1445                                 c->argv[ 1 ] );
1446                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1447                                 "%s: %s.\n", c->log, c->cr_msg );
1448                         return 1;
1449                 }
1450
1451                 if ( t <= 0 ) {
1452                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1453                                 "DDS invalid dds-interval=%ld",
1454                                 t );
1455                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1456                                 "%s: %s.\n", c->log, c->cr_msg );
1457                         return 1;
1458                 }
1459
1460                 if ( t < 60 ) {
1461                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_NOTICE,
1462                                 "%s: dds-interval=%lu may be too small.\n",
1463                                 c->log, t );
1464                 }
1465
1466                 di->di_interval = (time_t)t;
1467                 if ( di->di_expire_task ) {
1468                         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1469                         if ( ldap_pvt_runqueue_isrunning( &slapd_rq, di->di_expire_task ) ) {
1470                                 ldap_pvt_runqueue_stoptask( &slapd_rq, di->di_expire_task );
1471                         }
1472                         di->di_expire_task->interval.tv_sec = DDS_INTERVAL( di );
1473                         ldap_pvt_runqueue_resched( &slapd_rq, di->di_expire_task, 0 );
1474                         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1475                 }
1476                 break;
1477
1478         case DDS_TOLERANCE:
1479                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1480                         snprintf( c->cr_msg, sizeof( c->cr_msg),
1481                                 "DDS unable to parse dds-tolerance \"%s\"",
1482                                 c->argv[ 1 ] );
1483                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1484                                 "%s: %s.\n", c->log, c->cr_msg );
1485                         return 1;
1486                 }
1487
1488                 if ( t < 0 || t > DDS_RF2589_MAX_TTL ) {
1489                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1490                                 "DDS invalid dds-tolerance=%ld",
1491                                 t );
1492                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1493                                 "%s: %s.\n", c->log, c->cr_msg );
1494                         return 1;
1495                 }
1496
1497                 di->di_tolerance = (time_t)t;
1498                 break;
1499
1500         case DDS_MAXDYNAMICOBJS:
1501                 if ( c->value_int < 0 ) {
1502                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1503                                 "DDS invalid dds-max-dynamicObjects=%d", c->value_int );
1504                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1505                                 "%s: %s.\n", c->log, c->cr_msg );
1506                         return 1;
1507                 }
1508                 di->di_max_dynamicObjects = c->value_int;
1509                 break;
1510
1511         default:
1512                 rc = 1;
1513                 break;
1514         }
1515
1516         return rc;
1517 }
1518
1519 static int
1520 dds_db_init(
1521         BackendDB       *be,
1522         ConfigReply     *cr)
1523 {
1524         slap_overinst   *on = (slap_overinst *)be->bd_info;
1525         dds_info_t      *di;
1526         BackendInfo     *bi = on->on_info->oi_orig;
1527
1528         if ( SLAP_ISGLOBALOVERLAY( be ) ) {
1529                 Log0( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1530                         "DDS cannot be used as global overlay.\n" );
1531                 return 1;
1532         }
1533
1534         /* check support for required functions */
1535         /* FIXME: some could be provided by other overlays in between */
1536         if ( bi->bi_op_add == NULL                      /* object creation */
1537                 || bi->bi_op_delete == NULL             /* object deletion */
1538                 || bi->bi_op_modify == NULL             /* object refresh */
1539                 || bi->bi_op_search == NULL             /* object expiration */
1540                 || bi->bi_entry_get_rw == NULL )        /* object type/existence checking */
1541         {
1542                 Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1543                         "DDS backend \"%s\" does not provide "
1544                         "required functionality.\n",
1545                         bi->bi_type );
1546                 return 1;
1547         }
1548
1549         di = (dds_info_t *)ch_calloc( 1, sizeof( dds_info_t ) );
1550         on->on_bi.bi_private = di;
1551
1552         di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1553         di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1554
1555         ldap_pvt_thread_mutex_init( &di->di_mutex );
1556
1557         SLAP_DBFLAGS( be ) |= SLAP_DBFLAG_DYNAMIC;
1558
1559         return 0;
1560 }
1561
1562 /* adds dynamicSubtrees to root DSE */
1563 static int
1564 dds_entry_info( void *arg, Entry *e )
1565 {
1566         dds_info_t      *di = (dds_info_t *)arg;
1567
1568         attr_merge( e, slap_schema.si_ad_dynamicSubtrees,
1569                 di->di_suffix, di->di_nsuffix );
1570
1571         return 0;
1572 }
1573
1574 /* callback that counts the returned entries, since the search
1575  * does not get to the point in slap_send_search_entries where
1576  * the actual count occurs */
1577 static int
1578 dds_count_cb( Operation *op, SlapReply *rs )
1579 {
1580         int     *nump = (int *)op->o_callback->sc_private;
1581
1582         switch ( rs->sr_type ) {
1583         case REP_SEARCH:
1584                 (*nump)++;
1585                 break;
1586
1587         case REP_SEARCHREF:
1588         case REP_RESULT:
1589                 break;
1590
1591         default:
1592                 assert( 0 );
1593         }
1594
1595         return 0;
1596 }
1597
1598 /* count dynamic objects existing in the database at startup */
1599 static int
1600 dds_count( void *ctx, BackendDB *be )
1601 {
1602         slap_overinst   *on = (slap_overinst *)be->bd_info;
1603         dds_info_t      *di = (dds_info_t *)on->on_bi.bi_private;
1604
1605         Connection      conn = { 0 };
1606         OperationBuffer opbuf;
1607         Operation       *op;
1608         slap_callback   sc = { 0 };
1609         SlapReply       rs = { REP_RESULT };
1610
1611         connection_fake_init( &conn, &opbuf, ctx );
1612         op = &opbuf.ob_op;
1613
1614         op->o_tag = LDAP_REQ_SEARCH;
1615         memset( &op->oq_search, 0, sizeof( op->oq_search ) );
1616
1617         op->o_bd = be;
1618
1619         op->o_req_dn = op->o_bd->be_suffix[ 0 ];
1620         op->o_req_ndn = op->o_bd->be_nsuffix[ 0 ];
1621
1622         op->o_dn = op->o_bd->be_rootdn;
1623         op->o_ndn = op->o_bd->be_rootndn;
1624
1625         op->ors_scope = LDAP_SCOPE_SUBTREE;
1626         op->ors_tlimit = SLAP_NO_LIMIT;
1627         op->ors_slimit = SLAP_NO_LIMIT;
1628         op->ors_attrs = slap_anlist_no_attrs;
1629
1630         op->ors_filterstr.bv_len = STRLENOF( "(objectClass=" ")" )
1631                 + slap_schema.si_oc_dynamicObject->soc_cname.bv_len;
1632         op->ors_filterstr.bv_val = op->o_tmpalloc( op->ors_filterstr.bv_len + 1, op->o_tmpmemctx );
1633         snprintf( op->ors_filterstr.bv_val, op->ors_filterstr.bv_len + 1,
1634                 "(objectClass=%s)",
1635                 slap_schema.si_oc_dynamicObject->soc_cname.bv_val );
1636
1637         op->ors_filter = str2filter_x( op, op->ors_filterstr.bv_val );
1638         if ( op->ors_filter == NULL ) {
1639                 rs.sr_err = LDAP_OTHER;
1640                 goto done_search;
1641         }
1642
1643         op->o_callback = &sc;
1644         sc.sc_response = dds_count_cb;
1645         sc.sc_private = &di->di_num_dynamicObjects;
1646
1647         op->o_bd->bd_info = (BackendInfo *)on->on_info;
1648         (void)op->o_bd->bd_info->bi_op_search( op, &rs );
1649         op->o_bd->bd_info = (BackendInfo *)on;
1650
1651 done_search:;
1652         op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
1653         filter_free_x( op, op->ors_filter );
1654
1655         if ( rs.sr_err == LDAP_SUCCESS ) {
1656                 Log1( LDAP_DEBUG_STATS, LDAP_LEVEL_INFO,
1657                         "DDS non-expired=%d\n",
1658                         di->di_num_dynamicObjects );
1659
1660         } else {
1661                 Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1662                         "DDS non-expired objects lookup failed err=%d\n",
1663                         rs.sr_err );
1664         }
1665
1666         return rs.sr_err;
1667 }
1668
1669 static int
1670 dds_db_open(
1671         BackendDB       *be,
1672         ConfigReply     *cr )
1673 {
1674         slap_overinst   *on = (slap_overinst *)be->bd_info;
1675         dds_info_t      *di = on->on_bi.bi_private;
1676         int             rc = 0;
1677         void            *thrctx = ldap_pvt_thread_pool_context();
1678
1679         if ( DDS_OFF( di ) ) {
1680                 goto done;
1681         }
1682
1683         if ( SLAP_SINGLE_SHADOW( be ) ) {
1684                 Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1685                         "DDS incompatible with shadow database \"%s\".\n",
1686                         be->be_suffix[ 0 ].bv_val );
1687                 return 1;
1688         }
1689
1690         if ( di->di_max_ttl == 0 ) {
1691                 di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1692         }
1693
1694         if ( di->di_min_ttl == 0 ) {
1695                 di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1696         }
1697
1698         di->di_suffix = be->be_suffix;
1699         di->di_nsuffix = be->be_nsuffix;
1700
1701         /* ... so that count, if required, is accurate */
1702         if ( di->di_max_dynamicObjects > 0 ) {
1703                 /* force deletion of expired entries... */
1704                 be->bd_info = (BackendInfo *)on->on_info;
1705                 rc = dds_expire( thrctx, di );
1706                 be->bd_info = (BackendInfo *)on;
1707                 if ( rc != LDAP_SUCCESS ) {
1708                         rc = 1;
1709                         goto done;
1710                 }
1711
1712                 rc = dds_count( thrctx, be );
1713                 if ( rc != LDAP_SUCCESS ) {
1714                         rc = 1;
1715                         goto done;
1716                 }
1717         }
1718
1719         /* start expire task */
1720         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1721         di->di_expire_task = ldap_pvt_runqueue_insert( &slapd_rq,
1722                 DDS_INTERVAL( di ),
1723                 dds_expire_fn, di, "dds_expire_fn",
1724                 be->be_suffix[ 0 ].bv_val );
1725         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1726
1727         /* register dinamicSubtrees root DSE info support */
1728         rc = entry_info_register( dds_entry_info, (void *)di );
1729
1730 done:;
1731
1732         return rc;
1733 }
1734
1735 static int
1736 dds_db_close(
1737         BackendDB       *be,
1738         ConfigReply     *cr )
1739 {
1740         slap_overinst   *on = (slap_overinst *)be->bd_info;
1741         dds_info_t      *di = on->on_bi.bi_private;
1742
1743         /* stop expire task */
1744         if ( di && di->di_expire_task ) {
1745                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1746                 if ( ldap_pvt_runqueue_isrunning( &slapd_rq, di->di_expire_task ) ) {
1747                         ldap_pvt_runqueue_stoptask( &slapd_rq, di->di_expire_task );
1748                 }
1749                 ldap_pvt_runqueue_remove( &slapd_rq, di->di_expire_task );
1750                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1751         }
1752
1753         (void)entry_info_unregister( dds_entry_info, (void *)di );
1754
1755         return 0;
1756 }
1757
1758 static int
1759 dds_db_destroy(
1760         BackendDB       *be,
1761         ConfigReply     *cr )
1762 {
1763         slap_overinst   *on = (slap_overinst *)be->bd_info;
1764         dds_info_t      *di = on->on_bi.bi_private;
1765
1766         if ( di != NULL ) {
1767                 ldap_pvt_thread_mutex_destroy( &di->di_mutex );
1768
1769                 free( di );
1770         }
1771
1772         return 0;
1773 }
1774
1775 static int
1776 slap_exop_refresh(
1777                 Operation       *op,
1778                 SlapReply       *rs )
1779 {
1780         BackendDB               *bd = op->o_bd;
1781
1782         rs->sr_err = slap_parse_refresh( op->ore_reqdata, &op->o_req_ndn, NULL,
1783                 &rs->sr_text, op->o_tmpmemctx );
1784         if ( rs->sr_err != LDAP_SUCCESS ) {
1785                 return rs->sr_err;
1786         }
1787
1788         Log2( LDAP_DEBUG_STATS, LDAP_LEVEL_INFO,
1789                 "%s REFRESH dn=\"%s\"\n",
1790                 op->o_log_prefix, op->o_req_ndn.bv_val );
1791         op->o_req_dn = op->o_req_ndn;
1792
1793         op->o_bd = select_backend( &op->o_req_ndn, 0 );
1794         if ( !SLAP_DYNAMIC( op->o_bd ) ) {
1795                 send_ldap_error( op, rs, LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
1796                         "backend does not support dynamic directory services" );
1797                 goto done;
1798         }
1799
1800         rs->sr_err = backend_check_restrictions( op, rs,
1801                 (struct berval *)&slap_EXOP_REFRESH );
1802         if ( rs->sr_err != LDAP_SUCCESS ) {
1803                 goto done;
1804         }
1805
1806         if ( op->o_bd->be_extended == NULL ) {
1807                 send_ldap_error( op, rs, LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
1808                         "backend does not support extended operations" );
1809                 goto done;
1810         }
1811
1812         op->o_bd->be_extended( op, rs );
1813
1814 done:;
1815         if ( !BER_BVISNULL( &op->o_req_ndn ) ) {
1816                 op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
1817                 BER_BVZERO( &op->o_req_ndn );
1818                 BER_BVZERO( &op->o_req_dn );
1819         }
1820         op->o_bd = bd;
1821
1822         return rs->sr_err;
1823 }
1824
1825 static slap_overinst dds;
1826
1827 static int do_not_load_exop;
1828 static int do_not_replace_exop;
1829 static int do_not_load_schema;
1830
1831 #if SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC
1832 static
1833 #endif /* SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC */
1834 int
1835 dds_initialize()
1836 {
1837         int             rc = 0;
1838         int             i, code;
1839
1840         /* Make sure we don't exceed the bits reserved for userland */
1841         config_check_userland( DDS_LAST );
1842
1843         if ( !do_not_load_schema ) {
1844                 static struct {
1845                         char                    *desc;
1846                         slap_mask_t             flags;
1847                         AttributeDescription    **ad;
1848                 }               s_at[] = {
1849                         { "( 1.3.6.1.4.1.4203.666.1.57 "
1850                                 "NAME ( 'entryExpireTimestamp' ) "
1851                                 "DESC 'RFC2589 OpenLDAP extension: expire time of a dynamic object, "
1852                                         "computed as now + entryTtl' "
1853                                 "EQUALITY generalizedTimeMatch "
1854                                 "ORDERING generalizedTimeOrderingMatch "
1855                                 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
1856                                 "SINGLE-VALUE "
1857                                 "NO-USER-MODIFICATION "
1858                                 "USAGE dSAOperation )",
1859                                 SLAP_AT_HIDE,
1860                                 &ad_entryExpireTimestamp },
1861                         { NULL }
1862                 };
1863
1864                 for ( i = 0; s_at[ i ].desc != NULL; i++ ) {
1865                         code = register_at( s_at[ i ].desc, s_at[ i ].ad, 0 );
1866                         if ( code ) {
1867                                 Debug( LDAP_DEBUG_ANY,
1868                                         "dds_initialize: register_at failed\n", 0, 0, 0 );
1869                                 return code;
1870                         }
1871                         (*s_at[ i ].ad)->ad_type->sat_flags |= SLAP_AT_HIDE;
1872                 }
1873         }
1874
1875         if ( !do_not_load_exop ) {
1876                 rc = load_extop2( (struct berval *)&slap_EXOP_REFRESH,
1877                         SLAP_EXOP_WRITES|SLAP_EXOP_HIDE, slap_exop_refresh,
1878                         !do_not_replace_exop );
1879                 if ( rc != LDAP_SUCCESS ) {
1880                         Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1881                                 "DDS unable to register refresh exop: %d.\n",
1882                                 rc );
1883                         return rc;
1884                 }
1885         }
1886
1887         dds.on_bi.bi_type = "dds";
1888
1889         dds.on_bi.bi_db_init = dds_db_init;
1890         dds.on_bi.bi_db_open = dds_db_open;
1891         dds.on_bi.bi_db_close = dds_db_close;
1892         dds.on_bi.bi_db_destroy = dds_db_destroy;
1893
1894         dds.on_bi.bi_op_add = dds_op_add;
1895         dds.on_bi.bi_op_delete = dds_op_delete;
1896         dds.on_bi.bi_op_modify = dds_op_modify;
1897         dds.on_bi.bi_op_modrdn = dds_op_rename;
1898         dds.on_bi.bi_extended = dds_op_extended;
1899
1900         dds.on_bi.bi_cf_ocs = dds_ocs;
1901
1902         rc = config_register_schema( dds_cfg, dds_ocs );
1903         if ( rc ) {
1904                 return rc;
1905         }
1906
1907         return overlay_register( &dds );
1908 }
1909
1910 #if SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC
1911 int
1912 init_module( int argc, char *argv[] )
1913 {
1914         int     i;
1915
1916         for ( i = 0; i < argc; i++ ) {
1917                 char    *arg = argv[ i ];
1918                 int     no = 0;
1919
1920                 if ( strncasecmp( arg, "no-", STRLENOF( "no-" ) ) == 0 ) {
1921                         arg += STRLENOF( "no-" );
1922                         no = 1;
1923                 }
1924
1925                 if ( strcasecmp( arg, "exop" ) == 0 ) {
1926                         do_not_load_exop = no;
1927
1928                 } else if ( strcasecmp( arg, "replace" ) == 0 ) {
1929                         do_not_replace_exop = no;
1930
1931                 } else if ( strcasecmp( arg, "schema" ) == 0 ) {
1932                         do_not_load_schema = no;
1933
1934                 } else {
1935                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1936                                 "DDS unknown module arg[#%d]=\"%s\".\n",
1937                                 i, argv[ i ] );
1938                         return 1;
1939                 }
1940         }
1941
1942         return dds_initialize();
1943 }
1944 #endif /* SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC */
1945
1946 #endif  /* defined(SLAPD_OVER_DDS) */