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                 }
 792         }
 793
 794         if ( rs->sr_err ) {
 795                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 796                 send_ldap_result( op, rs );
 797                 return rs->sr_err;
 798         }
 799
 800         return SLAP_CB_CONTINUE;
 801 }
 802
 803 static int
 804 dds_op_rename( Operation *op, SlapReply *rs )
 805 {
 806         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 807         dds_info_t      *di = on->on_bi.bi_private;
 808
 809         if ( DDS_OFF( di ) ) {
 810                 return SLAP_CB_CONTINUE;
 811         }
 812
 813         /* we don't allow dynamicObjects to have static subordinates */
 814         if ( op->orr_nnewSup != NULL ) {
 815                 Entry           *e = NULL;
 816                 BackendInfo     *bi = op->o_bd->bd_info;
 817                 int             is_dynamicObject = 0,
 818                                 rc;
 819
 820                 rs->sr_err = LDAP_SUCCESS;
 821
 822                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 823                 rc = be_entry_get_rw( op, &op->o_req_ndn,
 824                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
 825                 if ( rc == LDAP_SUCCESS && e != NULL ) {
 826                         be_entry_release_r( op, e );
 827                         e = NULL;
 828                         is_dynamicObject = 1;
 829                 }
 830
 831                 rc = be_entry_get_rw( op, op->orr_nnewSup,
 832                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
 833                 if ( rc == LDAP_SUCCESS && e != NULL ) {
 834                         if ( !is_dynamicObject ) {
 835                                 /* return referral only if "disclose"
 836                                  * is granted on the object */
 837                                 if ( ! access_allowed( op, e,
 838                                                 slap_schema.si_ad_entry,
 839                                                 NULL, ACL_DISCLOSE, NULL ) )
 840                                 {
 841                                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 842                                         send_ldap_result( op, rs );
 843
 844                                 } else {
 845                                         send_ldap_error( op, rs, LDAP_CONSTRAINT_VIOLATION,
 846                                                 "static entry cannot have dynamicObject as newSuperior" );
 847                                 }
 848                         }
 849                         be_entry_release_r( op, e );
 850                 }
 851                 op->o_bd->bd_info = bi;
 852                 if ( rs->sr_err != LDAP_SUCCESS ) {
 853                         return rs->sr_err;
 854                 }
 855         }
 856
 857         return SLAP_CB_CONTINUE;
 858 }
 859
 860 static int
 861 slap_parse_refresh(
 862         struct berval   *in,
 863         struct berval   *ndn,
 864         time_t          *ttl,
 865         const char      **text,
 866         void            *ctx )
 867 {
 868         int                     rc = LDAP_SUCCESS;
 869         ber_tag_t               tag;
 870         ber_len_t               len = -1;
 871         BerElementBuffer        berbuf;
 872         BerElement              *ber = (BerElement *)&berbuf;
 873         struct berval           reqdata = BER_BVNULL;
 874         int                     tmp;
 875
 876         *text = NULL;
 877
 878         if ( ndn ) {
 879                 BER_BVZERO( ndn );
 880         }
 881
 882         if ( in == NULL || in->bv_len == 0 ) {
 883                 *text = "empty request data field in refresh exop";
 884                 return LDAP_PROTOCOL_ERROR;
 885         }
 886
 887         ber_dupbv_x( &reqdata, in, ctx );
 888
 889         /* ber_init2 uses reqdata directly, doesn't allocate new buffers */
 890         ber_init2( ber, &reqdata, 0 );
 891
 892         tag = ber_scanf( ber, "{" /*}*/ );
 893
 894         if ( tag == LBER_ERROR ) {
 895                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 896                         "slap_parse_refresh: decoding error.\n" );
 897                 goto decoding_error;
 898         }
 899
 900         tag = ber_peek_tag( ber, &len );
 901         if ( tag != LDAP_TAG_EXOP_REFRESH_REQ_DN ) {
 902                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 903                         "slap_parse_refresh: decoding error.\n" );
 904                 goto decoding_error;
 905         }
 906
 907         if ( ndn ) {
 908                 struct berval   dn;
 909
 910                 tag = ber_scanf( ber, "m", &dn );
 911                 if ( tag == LBER_ERROR ) {
 912                         Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 913                                 "slap_parse_refresh: DN parse failed.\n" );
 914                         goto decoding_error;
 915                 }
 916
 917                 rc = dnNormalize( 0, NULL, NULL, &dn, ndn, ctx );
 918                 if ( rc != LDAP_SUCCESS ) {
 919                         *text = "invalid DN in refresh exop request data";
 920                         goto done;
 921                 }
 922
 923         } else {
 924                 tag = ber_scanf( ber, "x" /* "m" */ );
 925                 if ( tag == LBER_DEFAULT ) {
 926                         goto decoding_error;
 927                 }
 928         }
 929
 930         tag = ber_peek_tag( ber, &len );
 931
 932         if ( tag != LDAP_TAG_EXOP_REFRESH_REQ_TTL ) {
 933                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 934                         "slap_parse_refresh: decoding error.\n" );
 935                 goto decoding_error;
 936         }
 937
 938         tag = ber_scanf( ber, "i", &tmp );
 939         if ( tag == LBER_ERROR ) {
 940                 Log0( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 941                         "slap_parse_refresh: TTL parse failed.\n" );
 942                 goto decoding_error;
 943         }
 944
 945         if ( ttl ) {
 946                 *ttl = tmp;
 947         }
 948
 949         tag = ber_peek_tag( ber, &len );
 950
 951         if ( len != 0 ) {
 952 decoding_error:;
 953                 Log1( LDAP_DEBUG_TRACE, LDAP_LEVEL_ERR,
 954                         "slap_parse_refresh: decoding error, len=%ld\n",
 955                         (long)len );
 956                 rc = LDAP_PROTOCOL_ERROR;
 957                 *text = "data decoding error";
 958
 959 done:;
 960                 if ( ndn && !BER_BVISNULL( ndn ) ) {
 961                         slap_sl_free( ndn->bv_val, ctx );
 962                         BER_BVZERO( ndn );
 963                 }
 964         }
 965
 966         if ( !BER_BVISNULL( &reqdata ) ) {
 967                 ber_memfree_x( reqdata.bv_val, ctx );
 968         }
 969
 970         return rc;
 971 }
 972
 973 static int
 974 dds_op_extended( Operation *op, SlapReply *rs )
 975 {
 976         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 977         dds_info_t      *di = on->on_bi.bi_private;
 978
 979         if ( DDS_OFF( di ) ) {
 980                 return SLAP_CB_CONTINUE;
 981         }
 982
 983         if ( bvmatch( &op->ore_reqoid, &slap_EXOP_REFRESH ) ) {
 984                 Entry           *e = NULL;
 985                 time_t          ttl;
 986                 BackendDB       db = *op->o_bd;
 987                 SlapReply       rs2 = { REP_RESULT };
 988                 Operation       op2 = *op;
 989                 slap_callback   sc = { 0 };
 990                 Modifications   ttlmod = { { 0 } };
 991                 struct berval   ttlvalues[ 2 ];
 992                 char            ttlbuf[] = "31557600";
 993
 994                 rs->sr_err = slap_parse_refresh( op->ore_reqdata, NULL, &ttl,
 995                         &rs->sr_text, NULL );
 996                 assert( rs->sr_err == LDAP_SUCCESS );
 997
 998                 if ( ttl <= 0 || ttl > DDS_RF2589_MAX_TTL ) {
 999                         rs->sr_err = LDAP_PROTOCOL_ERROR;
1000                         rs->sr_text = "invalid time-to-live for dynamicObject";
1001                         return rs->sr_err;
1002                 }
1003
1004                 if ( ttl > di->di_max_ttl ) {
1005                         /* FIXME: I don't understand if this has to be an error,
1006                          * or an indication that the requested Ttl has been
1007                          * shortened to di->di_max_ttl >= 1 day */
1008                         rs->sr_err = LDAP_SIZELIMIT_EXCEEDED;
1009                         rs->sr_text = "time-to-live for dynamicObject exceeds limit";
1010                         return rs->sr_err;
1011                 }
1012
1013                 if ( di->di_min_ttl && ttl < di->di_min_ttl ) {
1014                         ttl = di->di_min_ttl;
1015                 }
1016
1017                 /* This does not apply to multi-master case */
1018                 if ( !( !SLAP_SINGLE_SHADOW( op->o_bd ) || be_isupdate( op ) ) ) {
1019                         /* we SHOULD return a referral in this case */
1020                         BerVarray defref = op->o_bd->be_update_refs
1021                                 ? op->o_bd->be_update_refs : default_referral;
1022
1023                         if ( defref != NULL ) {
1024                                 rs->sr_ref = referral_rewrite( op->o_bd->be_update_refs,
1025                                         NULL, NULL, LDAP_SCOPE_DEFAULT );
1026                                 if ( rs->sr_ref ) {
1027                                         rs->sr_flags |= REP_REF_MUSTBEFREED;
1028                                 } else {
1029                                         rs->sr_ref = defref;
1030                                 }
1031                                 rs->sr_err = LDAP_REFERRAL;
1032
1033                         } else {
1034                                 rs->sr_text = "shadow context; no update referral";
1035                                 rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
1036                         }
1037
1038                         return rs->sr_err;
1039                 }
1040
1041                 assert( !BER_BVISNULL( &op->o_req_ndn ) );
1042
1043
1044
1045                 /* check if exists but not dynamicObject */
1046                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1047                 rs->sr_err = be_entry_get_rw( op, &op->o_req_ndn,
1048                         slap_schema.si_oc_dynamicObject, NULL, 0, &e );
1049                 if ( rs->sr_err != LDAP_SUCCESS ) {
1050                         rs->sr_err = be_entry_get_rw( op, &op->o_req_ndn,
1051                                 NULL, NULL, 0, &e );
1052                         if ( rs->sr_err == LDAP_SUCCESS && e != NULL ) {
1053                                 /* return referral only if "disclose"
1054                                  * is granted on the object */
1055                                 if ( ! access_allowed( op, e,
1056                                                 slap_schema.si_ad_entry,
1057                                                 NULL, ACL_DISCLOSE, NULL ) )
1058                                 {
1059                                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
1060
1061                                 } else {
1062                                         rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION;
1063                                         rs->sr_text = "refresh operation only applies to dynamic objects";
1064                                 }
1065                                 be_entry_release_r( op, e );
1066
1067                         } else {
1068                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
1069                         }
1070                         return rs->sr_err;
1071
1072                 } else if ( e != NULL ) {
1073                         be_entry_release_r( op, e );
1074                 }
1075
1076                 /* we require manage privileges on the entryTtl,
1077                  * and fake a Relax control */
1078                 op2.o_tag = LDAP_REQ_MODIFY;
1079                 op2.o_bd = &db;
1080                 db.bd_info = (BackendInfo *)on->on_info;
1081                 op2.o_callback = &sc;
1082                 sc.sc_response = slap_null_cb;
1083                 op2.o_relax = SLAP_CONTROL_CRITICAL;
1084                 op2.orm_modlist = &ttlmod;
1085
1086                 ttlmod.sml_op = LDAP_MOD_REPLACE;
1087                 ttlmod.sml_flags = SLAP_MOD_MANAGING;
1088                 ttlmod.sml_desc = slap_schema.si_ad_entryTtl;
1089                 ttlmod.sml_values = ttlvalues;
1090                 ttlvalues[ 0 ].bv_val = ttlbuf;
1091                 ttlvalues[ 0 ].bv_len = snprintf( ttlbuf, sizeof( ttlbuf ), "%ld", ttl );
1092                 BER_BVZERO( &ttlvalues[ 1 ] );
1093
1094                 /* the entryExpireTimestamp is added by modify */
1095                 rs->sr_err = op2.o_bd->be_modify( &op2, &rs2 );
1096
1097                 if ( ttlmod.sml_next != NULL ) {
1098                         slap_mods_free( ttlmod.sml_next, 1 );
1099                 }
1100
1101                 if ( rs->sr_err == LDAP_SUCCESS ) {
1102                         int                     rc;
1103                         BerElementBuffer        berbuf;
1104                         BerElement              *ber = (BerElement *)&berbuf;
1105
1106                         if ( rs->sr_err == LDAP_SUCCESS ) {
1107                                 ber_init_w_nullc( ber, LBER_USE_DER );
1108
1109                                 rc = ber_printf( ber, "{tiN}", LDAP_TAG_EXOP_REFRESH_RES_TTL, (int)ttl );
1110
1111                                 if ( rc < 0 ) {
1112                                         rs->sr_err = LDAP_OTHER;
1113                                         rs->sr_text = "internal error";
1114
1115                                 } else {
1116                                         (void)ber_flatten( ber, &rs->sr_rspdata );
1117                                         rs->sr_rspoid = ch_strdup( slap_EXOP_REFRESH.bv_val );
1118
1119                                         Log3( LDAP_DEBUG_TRACE, LDAP_LEVEL_INFO,
1120                                                 "%s REFRESH dn=\"%s\" TTL=%ld\n",
1121                                                 op->o_log_prefix, op->o_req_ndn.bv_val, ttl );
1122                                 }
1123
1124                                 ber_free_buf( ber );
1125                         }
1126                 }
1127
1128                 return rs->sr_err;
1129         }
1130
1131         return SLAP_CB_CONTINUE;
1132 }
1133
1134 enum {
1135         DDS_STATE = 1,
1136         DDS_MAXTTL,
1137         DDS_MINTTL,
1138         DDS_DEFAULTTTL,
1139         DDS_INTERVAL,
1140         DDS_TOLERANCE,
1141         DDS_MAXDYNAMICOBJS,
1142
1143         DDS_LAST
1144 };
1145
1146 static ConfigDriver dds_cfgen;
1147 #if 0
1148 static ConfigLDAPadd dds_ldadd;
1149 static ConfigCfAdd dds_cfadd;
1150 #endif
1151
1152 static ConfigTable dds_cfg[] = {
1153         { "dds-state", "on|off",
1154                 2, 2, 0, ARG_MAGIC|ARG_ON_OFF|DDS_STATE, dds_cfgen,
1155                 "( OLcfgOvAt:9.1 NAME 'olcDDSstate' "
1156                         "DESC 'RFC2589 Dynamic directory services state' "
1157                         "SYNTAX OMsBoolean "
1158                         "SINGLE-VALUE )", NULL, NULL },
1159         { "dds-max-ttl", "ttl",
1160                 2, 2, 0, ARG_MAGIC|DDS_MAXTTL, dds_cfgen,
1161                 "( OLcfgOvAt:9.2 NAME 'olcDDSmaxTtl' "
1162                         "DESC 'RFC2589 Dynamic directory services max TTL' "
1163                         "SYNTAX OMsDirectoryString "
1164                         "SINGLE-VALUE )", NULL, NULL },
1165         { "dds-min-ttl", "ttl",
1166                 2, 2, 0, ARG_MAGIC|DDS_MINTTL, dds_cfgen,
1167                 "( OLcfgOvAt:9.3 NAME 'olcDDSminTtl' "
1168                         "DESC 'RFC2589 Dynamic directory services min TTL' "
1169                         "SYNTAX OMsDirectoryString "
1170                         "SINGLE-VALUE )", NULL, NULL },
1171         { "dds-default-ttl", "ttl",
1172                 2, 2, 0, ARG_MAGIC|DDS_DEFAULTTTL, dds_cfgen,
1173                 "( OLcfgOvAt:9.4 NAME 'olcDDSdefaultTtl' "
1174                         "DESC 'RFC2589 Dynamic directory services default TTL' "
1175                         "SYNTAX OMsDirectoryString "
1176                         "SINGLE-VALUE )", NULL, NULL },
1177         { "dds-interval", "interval",
1178                 2, 2, 0, ARG_MAGIC|DDS_INTERVAL, dds_cfgen,
1179                 "( OLcfgOvAt:9.5 NAME 'olcDDSinterval' "
1180                         "DESC 'RFC2589 Dynamic directory services expiration "
1181                                 "task run interval' "
1182                         "SYNTAX OMsDirectoryString "
1183                         "SINGLE-VALUE )", NULL, NULL },
1184         { "dds-tolerance", "ttl",
1185                 2, 2, 0, ARG_MAGIC|DDS_TOLERANCE, dds_cfgen,
1186                 "( OLcfgOvAt:9.6 NAME 'olcDDStolerance' "
1187                         "DESC 'RFC2589 Dynamic directory services additional "
1188                                 "TTL in expiration scheduling' "
1189                         "SYNTAX OMsDirectoryString "
1190                         "SINGLE-VALUE )", NULL, NULL },
1191         { "dds-max-dynamicObjects", "num",
1192                 2, 2, 0, ARG_MAGIC|ARG_INT|DDS_MAXDYNAMICOBJS, dds_cfgen,
1193                 "( OLcfgOvAt:9.7 NAME 'olcDDSmaxDynamicObjects' "
1194                         "DESC 'RFC2589 Dynamic directory services max number of dynamic objects' "
1195                         "SYNTAX OMsInteger "
1196                         "SINGLE-VALUE )", NULL, NULL },
1197         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
1198 };
1199
1200 static ConfigOCs dds_ocs[] = {
1201         { "( OLcfgOvOc:9.1 "
1202                 "NAME 'olcDDSConfig' "
1203                 "DESC 'RFC2589 Dynamic directory services configuration' "
1204                 "SUP olcOverlayConfig "
1205                 "MAY ( "
1206                         "olcDDSstate "
1207                         "$ olcDDSmaxTtl "
1208                         "$ olcDDSminTtl "
1209                         "$ olcDDSdefaultTtl "
1210                         "$ olcDDSinterval "
1211                         "$ olcDDStolerance "
1212                         "$ olcDDSmaxDynamicObjects "
1213                 " ) "
1214                 ")", Cft_Overlay, dds_cfg, NULL, NULL /* dds_cfadd */ },
1215         { NULL, 0, NULL }
1216 };
1217
1218 #if 0
1219 static int
1220 dds_ldadd( CfEntryInfo *p, Entry *e, ConfigArgs *ca )
1221 {
1222         return LDAP_SUCCESS;
1223 }
1224
1225 static int
1226 dds_cfadd( Operation *op, SlapReply *rs, Entry *p, ConfigArgs *ca )
1227 {
1228         return 0;
1229 }
1230 #endif
1231
1232 static int
1233 dds_cfgen( ConfigArgs *c )
1234 {
1235         slap_overinst   *on = (slap_overinst *)c->bi;
1236         dds_info_t      *di = on->on_bi.bi_private;
1237         int             rc = 0;
1238         unsigned long   t;
1239
1240
1241         if ( c->op == SLAP_CONFIG_EMIT ) {
1242                 char            buf[ SLAP_TEXT_BUFLEN ];
1243                 struct berval   bv;
1244
1245                 switch( c->type ) {
1246                 case DDS_STATE:
1247                         c->value_int = !DDS_OFF( di );
1248                         break;
1249
1250                 case DDS_MAXTTL:
1251                         lutil_unparse_time( buf, sizeof( buf ), di->di_max_ttl );
1252                         ber_str2bv( buf, 0, 0, &bv );
1253                         value_add_one( &c->rvalue_vals, &bv );
1254                         break;
1255
1256                 case DDS_MINTTL:
1257                         if ( di->di_min_ttl ) {
1258                                 lutil_unparse_time( buf, sizeof( buf ), di->di_min_ttl );
1259                                 ber_str2bv( buf, 0, 0, &bv );
1260                                 value_add_one( &c->rvalue_vals, &bv );
1261
1262                         } else {
1263                                 rc = 1;
1264                         }
1265                         break;
1266
1267                 case DDS_DEFAULTTTL:
1268                         if ( di->di_default_ttl ) {
1269                                 lutil_unparse_time( buf, sizeof( buf ), di->di_default_ttl );
1270                                 ber_str2bv( buf, 0, 0, &bv );
1271                                 value_add_one( &c->rvalue_vals, &bv );
1272
1273                         } else {
1274                                 rc = 1;
1275                         }
1276                         break;
1277
1278                 case DDS_INTERVAL:
1279                         if ( di->di_interval ) {
1280                                 lutil_unparse_time( buf, sizeof( buf ), di->di_interval );
1281                                 ber_str2bv( buf, 0, 0, &bv );
1282                                 value_add_one( &c->rvalue_vals, &bv );
1283
1284                         } else {
1285                                 rc = 1;
1286                         }
1287                         break;
1288
1289                 case DDS_TOLERANCE:
1290                         if ( di->di_tolerance ) {
1291                                 lutil_unparse_time( buf, sizeof( buf ), di->di_tolerance );
1292                                 ber_str2bv( buf, 0, 0, &bv );
1293                                 value_add_one( &c->rvalue_vals, &bv );
1294
1295                         } else {
1296                                 rc = 1;
1297                         }
1298                         break;
1299
1300                 case DDS_MAXDYNAMICOBJS:
1301                         if ( di->di_max_dynamicObjects > 0 ) {
1302                                 c->value_int = di->di_max_dynamicObjects;
1303
1304                         } else {
1305                                 rc = 1;
1306                         }
1307                         break;
1308
1309                 default:
1310                         rc = 1;
1311                         break;
1312                 }
1313
1314                 return rc;
1315
1316         } else if ( c->op == LDAP_MOD_DELETE ) {
1317                 switch( c->type ) {
1318                 case DDS_STATE:
1319                         di->di_flags &= ~DDS_FOFF;
1320                         break;
1321
1322                 case DDS_MAXTTL:
1323                         di->di_min_ttl = DDS_RF2589_DEFAULT_TTL;
1324                         break;
1325
1326                 case DDS_MINTTL:
1327                         di->di_min_ttl = 0;
1328                         break;
1329
1330                 case DDS_DEFAULTTTL:
1331                         di->di_default_ttl = 0;
1332                         break;
1333
1334                 case DDS_INTERVAL:
1335                         di->di_interval = 0;
1336                         break;
1337
1338                 case DDS_TOLERANCE:
1339                         di->di_tolerance = 0;
1340                         break;
1341
1342                 case DDS_MAXDYNAMICOBJS:
1343                         di->di_max_dynamicObjects = 0;
1344                         break;
1345
1346                 default:
1347                         rc = 1;
1348                         break;
1349                 }
1350
1351                 return rc;
1352         }
1353
1354         switch ( c->type ) {
1355         case DDS_STATE:
1356                 if ( c->value_int ) {
1357                         di->di_flags &= ~DDS_FOFF;
1358
1359                 } else {
1360                         di->di_flags |= DDS_FOFF;
1361                 }
1362                 break;
1363
1364         case DDS_MAXTTL:
1365                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1366                         snprintf( c->cr_msg, sizeof( c->cr_msg),
1367                                 "DDS unable to parse dds-max-ttl \"%s\"",
1368                                 c->argv[ 1 ] );
1369                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1370                                 "%s: %s.\n", c->log, c->cr_msg );
1371                         return 1;
1372                 }
1373
1374                 if ( t < DDS_RF2589_DEFAULT_TTL || t > DDS_RF2589_MAX_TTL ) {
1375                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1376                                 "DDS invalid dds-max-ttl=%ld; must be between %d and %d",
1377                                 t, DDS_RF2589_DEFAULT_TTL, DDS_RF2589_MAX_TTL );
1378                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1379                                 "%s: %s.\n", c->log, c->cr_msg );
1380                         return 1;
1381                 }
1382
1383                 di->di_max_ttl = (time_t)t;
1384                 break;
1385
1386         case DDS_MINTTL:
1387                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1388                         snprintf( c->cr_msg, sizeof( c->cr_msg),
1389                                 "DDS unable to parse dds-min-ttl \"%s\"",
1390                                 c->argv[ 1 ] );
1391                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1392                                 "%s: %s.\n", c->log, c->cr_msg );
1393                         return 1;
1394                 }
1395
1396                 if ( t < 0 || t > DDS_RF2589_MAX_TTL ) {
1397                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1398                                 "DDS invalid dds-min-ttl=%ld",
1399                                 t );
1400                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1401                                 "%s: %s.\n", c->log, c->cr_msg );
1402                         return 1;
1403                 }
1404
1405                 if ( t == 0 ) {
1406                         di->di_min_ttl = DDS_RF2589_DEFAULT_TTL;
1407
1408                 } else {
1409                         di->di_min_ttl = (time_t)t;
1410                 }
1411                 break;
1412
1413         case DDS_DEFAULTTTL:
1414                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1415                         snprintf( c->cr_msg, sizeof( c->cr_msg),
1416                                 "DDS unable to parse dds-default-ttl \"%s\"",
1417                                 c->argv[ 1 ] );
1418                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1419                                 "%s: %s.\n", c->log, c->cr_msg );
1420                         return 1;
1421                 }
1422
1423                 if ( t < 0 || t > DDS_RF2589_MAX_TTL ) {
1424                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1425                                 "DDS invalid dds-default-ttl=%ld",
1426                                 t );
1427                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1428                                 "%s: %s.\n", c->log, c->cr_msg );
1429                         return 1;
1430                 }
1431
1432                 if ( t == 0 ) {
1433                         di->di_default_ttl = DDS_RF2589_DEFAULT_TTL;
1434
1435                 } else {
1436                         di->di_default_ttl = (time_t)t;
1437                 }
1438                 break;
1439
1440         case DDS_INTERVAL:
1441                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1442                         snprintf( c->cr_msg, sizeof( c->cr_msg),
1443                                 "DDS unable to parse dds-interval \"%s\"",
1444                                 c->argv[ 1 ] );
1445                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1446                                 "%s: %s.\n", c->log, c->cr_msg );
1447                         return 1;
1448                 }
1449
1450                 if ( t <= 0 ) {
1451                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1452                                 "DDS invalid dds-interval=%ld",
1453                                 t );
1454                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1455                                 "%s: %s.\n", c->log, c->cr_msg );
1456                         return 1;
1457                 }
1458
1459                 if ( t < 60 ) {
1460                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_NOTICE,
1461                                 "%s: dds-interval=%lu may be too small.\n",
1462                                 c->log, t );
1463                 }
1464
1465                 di->di_interval = (time_t)t;
1466                 if ( di->di_expire_task ) {
1467                         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1468                         if ( ldap_pvt_runqueue_isrunning( &slapd_rq, di->di_expire_task ) ) {
1469                                 ldap_pvt_runqueue_stoptask( &slapd_rq, di->di_expire_task );
1470                         }
1471                         di->di_expire_task->interval.tv_sec = DDS_INTERVAL( di );
1472                         ldap_pvt_runqueue_resched( &slapd_rq, di->di_expire_task, 0 );
1473                         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1474                 }
1475                 break;
1476
1477         case DDS_TOLERANCE:
1478                 if ( lutil_parse_time( c->argv[ 1 ], &t ) != 0 ) {
1479                         snprintf( c->cr_msg, sizeof( c->cr_msg),
1480                                 "DDS unable to parse dds-tolerance \"%s\"",
1481                                 c->argv[ 1 ] );
1482                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1483                                 "%s: %s.\n", c->log, c->cr_msg );
1484                         return 1;
1485                 }
1486
1487                 if ( t < 0 || t > DDS_RF2589_MAX_TTL ) {
1488                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1489                                 "DDS invalid dds-tolerance=%ld",
1490                                 t );
1491                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1492                                 "%s: %s.\n", c->log, c->cr_msg );
1493                         return 1;
1494                 }
1495
1496                 di->di_tolerance = (time_t)t;
1497                 break;
1498
1499         case DDS_MAXDYNAMICOBJS:
1500                 if ( c->value_int < 0 ) {
1501                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1502                                 "DDS invalid dds-max-dynamicObjects=%d", c->value_int );
1503                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1504                                 "%s: %s.\n", c->log, c->cr_msg );
1505                         return 1;
1506                 }
1507                 di->di_max_dynamicObjects = c->value_int;
1508                 break;
1509
1510         default:
1511                 rc = 1;
1512                 break;
1513         }
1514
1515         return rc;
1516 }
1517
1518 static int
1519 dds_db_init(
1520         BackendDB       *be,
1521         ConfigReply     *cr)
1522 {
1523         slap_overinst   *on = (slap_overinst *)be->bd_info;
1524         dds_info_t      *di;
1525         BackendInfo     *bi = on->on_info->oi_orig;
1526
1527         if ( SLAP_ISGLOBALOVERLAY( be ) ) {
1528                 Log0( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1529                         "DDS cannot be used as global overlay.\n" );
1530                 return 1;
1531         }
1532
1533         /* check support for required functions */
1534         /* FIXME: some could be provided by other overlays in between */
1535         if ( bi->bi_op_add == NULL                      /* object creation */
1536                 || bi->bi_op_delete == NULL             /* object deletion */
1537                 || bi->bi_op_modify == NULL             /* object refresh */
1538                 || bi->bi_op_search == NULL             /* object expiration */
1539                 || bi->bi_entry_get_rw == NULL )        /* object type/existence checking */
1540         {
1541                 Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1542                         "DDS backend \"%s\" does not provide "
1543                         "required functionality.\n",
1544                         bi->bi_type );
1545                 return 1;
1546         }
1547
1548         di = (dds_info_t *)ch_calloc( 1, sizeof( dds_info_t ) );
1549         on->on_bi.bi_private = di;
1550
1551         di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1552         di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1553
1554         ldap_pvt_thread_mutex_init( &di->di_mutex );
1555
1556         SLAP_DBFLAGS( be ) |= SLAP_DBFLAG_DYNAMIC;
1557
1558         return 0;
1559 }
1560
1561 /* adds dynamicSubtrees to root DSE */
1562 static int
1563 dds_entry_info( void *arg, Entry *e )
1564 {
1565         dds_info_t      *di = (dds_info_t *)arg;
1566
1567         attr_merge( e, slap_schema.si_ad_dynamicSubtrees,
1568                 di->di_suffix, di->di_nsuffix );
1569
1570         return 0;
1571 }
1572
1573 /* callback that counts the returned entries, since the search
1574  * does not get to the point in slap_send_search_entries where
1575  * the actual count occurs */
1576 static int
1577 dds_count_cb( Operation *op, SlapReply *rs )
1578 {
1579         int     *nump = (int *)op->o_callback->sc_private;
1580
1581         switch ( rs->sr_type ) {
1582         case REP_SEARCH:
1583                 (*nump)++;
1584                 break;
1585
1586         case REP_SEARCHREF:
1587         case REP_RESULT:
1588                 break;
1589
1590         default:
1591                 assert( 0 );
1592         }
1593
1594         return 0;
1595 }
1596
1597 /* count dynamic objects existing in the database at startup */
1598 static int
1599 dds_count( void *ctx, BackendDB *be )
1600 {
1601         slap_overinst   *on = (slap_overinst *)be->bd_info;
1602         dds_info_t      *di = (dds_info_t *)on->on_bi.bi_private;
1603
1604         Connection      conn = { 0 };
1605         OperationBuffer opbuf;
1606         Operation       *op;
1607         slap_callback   sc = { 0 };
1608         SlapReply       rs = { REP_RESULT };
1609
1610         connection_fake_init( &conn, &opbuf, ctx );
1611         op = &opbuf.ob_op;
1612
1613         op->o_tag = LDAP_REQ_SEARCH;
1614         memset( &op->oq_search, 0, sizeof( op->oq_search ) );
1615
1616         op->o_bd = be;
1617
1618         op->o_req_dn = op->o_bd->be_suffix[ 0 ];
1619         op->o_req_ndn = op->o_bd->be_nsuffix[ 0 ];
1620
1621         op->o_dn = op->o_bd->be_rootdn;
1622         op->o_ndn = op->o_bd->be_rootndn;
1623
1624         op->ors_scope = LDAP_SCOPE_SUBTREE;
1625         op->ors_tlimit = SLAP_NO_LIMIT;
1626         op->ors_slimit = SLAP_NO_LIMIT;
1627         op->ors_attrs = slap_anlist_no_attrs;
1628
1629         op->ors_filterstr.bv_len = STRLENOF( "(objectClass=" ")" )
1630                 + slap_schema.si_oc_dynamicObject->soc_cname.bv_len;
1631         op->ors_filterstr.bv_val = op->o_tmpalloc( op->ors_filterstr.bv_len + 1, op->o_tmpmemctx );
1632         snprintf( op->ors_filterstr.bv_val, op->ors_filterstr.bv_len + 1,
1633                 "(objectClass=%s)",
1634                 slap_schema.si_oc_dynamicObject->soc_cname.bv_val );
1635
1636         op->ors_filter = str2filter_x( op, op->ors_filterstr.bv_val );
1637         if ( op->ors_filter == NULL ) {
1638                 rs.sr_err = LDAP_OTHER;
1639                 goto done_search;
1640         }
1641
1642         op->o_callback = &sc;
1643         sc.sc_response = dds_count_cb;
1644         sc.sc_private = &di->di_num_dynamicObjects;
1645
1646         op->o_bd->bd_info = (BackendInfo *)on->on_info;
1647         (void)op->o_bd->bd_info->bi_op_search( op, &rs );
1648         op->o_bd->bd_info = (BackendInfo *)on;
1649
1650 done_search:;
1651         op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
1652         filter_free_x( op, op->ors_filter );
1653
1654         if ( rs.sr_err == LDAP_SUCCESS ) {
1655                 Log1( LDAP_DEBUG_STATS, LDAP_LEVEL_INFO,
1656                         "DDS non-expired=%d\n",
1657                         di->di_num_dynamicObjects );
1658
1659         } else {
1660                 Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1661                         "DDS non-expired objects lookup failed err=%d\n",
1662                         rs.sr_err );
1663         }
1664
1665         return rs.sr_err;
1666 }
1667
1668 static int
1669 dds_db_open(
1670         BackendDB       *be,
1671         ConfigReply     *cr )
1672 {
1673         slap_overinst   *on = (slap_overinst *)be->bd_info;
1674         dds_info_t      *di = on->on_bi.bi_private;
1675         int             rc = 0;
1676         void            *thrctx = ldap_pvt_thread_pool_context();
1677
1678         if ( DDS_OFF( di ) ) {
1679                 goto done;
1680         }
1681
1682         if ( SLAP_SINGLE_SHADOW( be ) ) {
1683                 Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1684                         "DDS incompatible with shadow database \"%s\".\n",
1685                         be->be_suffix[ 0 ].bv_val );
1686                 return 1;
1687         }
1688
1689         if ( di->di_max_ttl == 0 ) {
1690                 di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1691         }
1692
1693         if ( di->di_min_ttl == 0 ) {
1694                 di->di_max_ttl = DDS_RF2589_DEFAULT_TTL;
1695         }
1696
1697         di->di_suffix = be->be_suffix;
1698         di->di_nsuffix = be->be_nsuffix;
1699
1700         /* ... so that count, if required, is accurate */
1701         if ( di->di_max_dynamicObjects > 0 ) {
1702                 /* force deletion of expired entries... */
1703                 be->bd_info = (BackendInfo *)on->on_info;
1704                 rc = dds_expire( thrctx, di );
1705                 be->bd_info = (BackendInfo *)on;
1706                 if ( rc != LDAP_SUCCESS ) {
1707                         rc = 1;
1708                         goto done;
1709                 }
1710
1711                 rc = dds_count( thrctx, be );
1712                 if ( rc != LDAP_SUCCESS ) {
1713                         rc = 1;
1714                         goto done;
1715                 }
1716         }
1717
1718         /* start expire task */
1719         ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1720         di->di_expire_task = ldap_pvt_runqueue_insert( &slapd_rq,
1721                 DDS_INTERVAL( di ),
1722                 dds_expire_fn, di, "dds_expire_fn",
1723                 be->be_suffix[ 0 ].bv_val );
1724         ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1725
1726         /* register dinamicSubtrees root DSE info support */
1727         rc = entry_info_register( dds_entry_info, (void *)di );
1728
1729 done:;
1730
1731         return rc;
1732 }
1733
1734 static int
1735 dds_db_close(
1736         BackendDB       *be,
1737         ConfigReply     *cr )
1738 {
1739         slap_overinst   *on = (slap_overinst *)be->bd_info;
1740         dds_info_t      *di = on->on_bi.bi_private;
1741
1742         /* stop expire task */
1743         if ( di && di->di_expire_task ) {
1744                 ldap_pvt_thread_mutex_lock( &slapd_rq.rq_mutex );
1745                 if ( ldap_pvt_runqueue_isrunning( &slapd_rq, di->di_expire_task ) ) {
1746                         ldap_pvt_runqueue_stoptask( &slapd_rq, di->di_expire_task );
1747                 }
1748                 ldap_pvt_runqueue_remove( &slapd_rq, di->di_expire_task );
1749                 ldap_pvt_thread_mutex_unlock( &slapd_rq.rq_mutex );
1750         }
1751
1752         (void)entry_info_unregister( dds_entry_info, (void *)di );
1753
1754         return 0;
1755 }
1756
1757 static int
1758 dds_db_destroy(
1759         BackendDB       *be,
1760         ConfigReply     *cr )
1761 {
1762         slap_overinst   *on = (slap_overinst *)be->bd_info;
1763         dds_info_t      *di = on->on_bi.bi_private;
1764
1765         if ( di != NULL ) {
1766                 ldap_pvt_thread_mutex_destroy( &di->di_mutex );
1767
1768                 free( di );
1769         }
1770
1771         return 0;
1772 }
1773
1774 static int
1775 slap_exop_refresh(
1776                 Operation       *op,
1777                 SlapReply       *rs )
1778 {
1779         BackendDB               *bd = op->o_bd;
1780
1781         rs->sr_err = slap_parse_refresh( op->ore_reqdata, &op->o_req_ndn, NULL,
1782                 &rs->sr_text, op->o_tmpmemctx );
1783         if ( rs->sr_err != LDAP_SUCCESS ) {
1784                 return rs->sr_err;
1785         }
1786
1787         Log2( LDAP_DEBUG_STATS, LDAP_LEVEL_INFO,
1788                 "%s REFRESH dn=\"%s\"\n",
1789                 op->o_log_prefix, op->o_req_ndn.bv_val );
1790         op->o_req_dn = op->o_req_ndn;
1791
1792         op->o_bd = select_backend( &op->o_req_ndn, 0 );
1793         if ( !SLAP_DYNAMIC( op->o_bd ) ) {
1794                 send_ldap_error( op, rs, LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
1795                         "backend does not support dynamic directory services" );
1796                 goto done;
1797         }
1798
1799         rs->sr_err = backend_check_restrictions( op, rs,
1800                 (struct berval *)&slap_EXOP_REFRESH );
1801         if ( rs->sr_err != LDAP_SUCCESS ) {
1802                 goto done;
1803         }
1804
1805         if ( op->o_bd->be_extended == NULL ) {
1806                 send_ldap_error( op, rs, LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
1807                         "backend does not support extended operations" );
1808                 goto done;
1809         }
1810
1811         op->o_bd->be_extended( op, rs );
1812
1813 done:;
1814         if ( !BER_BVISNULL( &op->o_req_ndn ) ) {
1815                 op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
1816                 BER_BVZERO( &op->o_req_ndn );
1817                 BER_BVZERO( &op->o_req_dn );
1818         }
1819         op->o_bd = bd;
1820
1821         return rs->sr_err;
1822 }
1823
1824 static slap_overinst dds;
1825
1826 static int do_not_load_exop;
1827 static int do_not_replace_exop;
1828 static int do_not_load_schema;
1829
1830 #if SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC
1831 static
1832 #endif /* SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC */
1833 int
1834 dds_initialize()
1835 {
1836         int             rc = 0;
1837         int             i, code;
1838
1839         /* Make sure we don't exceed the bits reserved for userland */
1840         config_check_userland( DDS_LAST );
1841
1842         if ( !do_not_load_schema ) {
1843                 static struct {
1844                         char                    *desc;
1845                         AttributeDescription    **ad;
1846                 }               s_at[] = {
1847                         { "( 1.3.6.1.4.1.4203.666.1.57 "
1848                                 "NAME ( 'entryExpireTimestamp' ) "
1849                                 "DESC 'RFC2589 OpenLDAP extension: expire time of a dynamic object, "
1850                                         "computed as now + entryTtl' "
1851                                 "EQUALITY generalizedTimeMatch "
1852                                 "ORDERING generalizedTimeOrderingMatch "
1853                                 "SYNTAX 1.3.6.1.4.1.1466.115.121.1.24 "
1854                                 "SINGLE-VALUE "
1855                                 "NO-USER-MODIFICATION "
1856                                 "USAGE dSAOperation )",
1857                                 &ad_entryExpireTimestamp },
1858                         { NULL }
1859                 };
1860
1861                 for ( i = 0; s_at[ i ].desc != NULL; i++ ) {
1862                         code = register_at( s_at[ i ].desc, s_at[ i ].ad, 0 );
1863                         if ( code ) {
1864                                 Debug( LDAP_DEBUG_ANY,
1865                                         "dds_initialize: register_at failed\n", 0, 0, 0 );
1866                                 return code;
1867                         }
1868                 }
1869         }
1870
1871         if ( !do_not_load_exop ) {
1872                 rc = load_extop2( (struct berval *)&slap_EXOP_REFRESH,
1873                         SLAP_EXOP_WRITES|SLAP_EXOP_HIDE, slap_exop_refresh,
1874                         !do_not_replace_exop );
1875                 if ( rc != LDAP_SUCCESS ) {
1876                         Log1( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1877                                 "DDS unable to register refresh exop: %d.\n",
1878                                 rc );
1879                         return rc;
1880                 }
1881         }
1882
1883         dds.on_bi.bi_type = "dds";
1884
1885         dds.on_bi.bi_db_init = dds_db_init;
1886         dds.on_bi.bi_db_open = dds_db_open;
1887         dds.on_bi.bi_db_close = dds_db_close;
1888         dds.on_bi.bi_db_destroy = dds_db_destroy;
1889
1890         dds.on_bi.bi_op_add = dds_op_add;
1891         dds.on_bi.bi_op_delete = dds_op_delete;
1892         dds.on_bi.bi_op_modify = dds_op_modify;
1893         dds.on_bi.bi_op_modrdn = dds_op_rename;
1894         dds.on_bi.bi_extended = dds_op_extended;
1895
1896         dds.on_bi.bi_cf_ocs = dds_ocs;
1897
1898         rc = config_register_schema( dds_cfg, dds_ocs );
1899         if ( rc ) {
1900                 return rc;
1901         }
1902
1903         return overlay_register( &dds );
1904 }
1905
1906 #if SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC
1907 int
1908 init_module( int argc, char *argv[] )
1909 {
1910         int     i;
1911
1912         for ( i = 0; i < argc; i++ ) {
1913                 char    *arg = argv[ i ];
1914                 int     no = 0;
1915
1916                 if ( strncasecmp( arg, "no-", STRLENOF( "no-" ) ) == 0 ) {
1917                         arg += STRLENOF( "no-" );
1918                         no = 1;
1919                 }
1920
1921                 if ( strcasecmp( arg, "exop" ) == 0 ) {
1922                         do_not_load_exop = no;
1923
1924                 } else if ( strcasecmp( arg, "replace" ) == 0 ) {
1925                         do_not_replace_exop = no;
1926
1927                 } else if ( strcasecmp( arg, "schema" ) == 0 ) {
1928                         do_not_load_schema = no;
1929
1930                 } else {
1931                         Log2( LDAP_DEBUG_ANY, LDAP_LEVEL_ERR,
1932                                 "DDS unknown module arg[#%d]=\"%s\".\n",
1933                                 i, argv[ i ] );
1934                         return 1;
1935                 }
1936         }
1937
1938         return dds_initialize();
1939 }
1940 #endif /* SLAPD_OVER_DDS == SLAPD_MOD_DYNAMIC */
1941
1942 #endif  /* defined(SLAPD_OVER_DDS) */