git.sur5r.net Git - openldap/blob - servers/slapd/overlays/dynlist.c

   1 /* dynlist.c - dynamic list overlay */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2003-2007 The OpenLDAP Foundation.
   6  * Portions Copyright 2004-2005 Pierangelo Masarati.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted only as authorized by the OpenLDAP
  11  * Public License.
  12  *
  13  * A copy of this license is available in the file LICENSE in the
  14  * top-level directory of the distribution or, alternatively, at
  15  * <http://www.OpenLDAP.org/license.html>.
  16  */
  17 /* ACKNOWLEDGEMENTS:
  18  * This work was initially developed by Pierangelo Masarati
  19  * for SysNet s.n.c., for inclusion in OpenLDAP Software.
  20  */
  21
  22 #include "portable.h"
  23
  24 #ifdef SLAPD_OVER_DYNLIST
  25
  26 #if LDAP_VENDOR_VERSION_MINOR == X || LDAP_VENDOR_VERSION_MINOR > 3
  27 #if SLAPD_OVER_DYNGROUP != SLAPD_MOD_STATIC
  28 #define TAKEOVER_DYNGROUP
  29 #endif
  30 #else
  31 #if LDAP_VENDOR_VERSION_MINOR < 3
  32 #define OL_2_2_COMPAT
  33 #endif
  34 #endif
  35
  36 #include <stdio.h>
  37
  38 #include <ac/string.h>
  39
  40 #include "slap.h"
  41 #ifndef OL_2_2_COMPAT
  42 #include "config.h"
  43 #endif
  44 #include "lutil.h"
  45
  46 /* FIXME: the code differs if SLAP_OPATTRS is defined or not;
  47  * SLAP_OPATTRS is not defined in 2.2 yet, while this overlay
  48  * expects HEAD code at least later than August 6, 2004. */
  49 /* FIXME: slap_anlist_no_attrs was introduced in 2.3; here it
  50  * is anticipated to allow using this overlay with 2.2. */
  51
  52 #ifdef OL_2_2_COMPAT
  53 static AttributeName anlist_no_attrs[] = {
  54         { BER_BVC( LDAP_NO_ATTRS ), NULL, 0, NULL },
  55         { BER_BVNULL, NULL, 0, NULL }
  56 };
  57
  58 static AttributeName *slap_anlist_no_attrs = anlist_no_attrs;
  59 #endif
  60
  61 typedef struct dynlist_info_t {
  62         ObjectClass             *dli_oc;
  63         AttributeDescription    *dli_ad;
  64         AttributeDescription    *dli_member_ad;
  65         struct berval           dli_default_filter;
  66         struct dynlist_info_t   *dli_next;
  67 } dynlist_info_t;
  68
  69 static dynlist_info_t *
  70 dynlist_is_dynlist( Operation *op, SlapReply *rs )
  71 {
  72         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
  73         dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private;
  74
  75         Attribute       *a;
  76
  77         a = attrs_find( rs->sr_entry->e_attrs, slap_schema.si_ad_objectClass );
  78         if ( a == NULL ) {
  79                 /* FIXME: objectClass must be present; for non-storage
  80                  * backends, like back-ldap, it needs to be added
  81                  * to the requested attributes */
  82                 return NULL;
  83         }
  84
  85         for ( ; dli; dli = dli->dli_next ) {
  86                 if ( value_find_ex( slap_schema.si_ad_objectClass,
  87                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
  88                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
  89                                 a->a_nvals, &dli->dli_oc->soc_cname,
  90                                 op->o_tmpmemctx ) == 0 )
  91                 {
  92                         return dli;
  93                 }
  94         }
  95
  96         return NULL;
  97 }
  98
  99 static int
 100 dynlist_make_filter( Operation *op, struct berval *oldf, struct berval *newf )
 101 {
 102         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 103         dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private;
 104
 105         char            *ptr;
 106
 107         assert( oldf != NULL );
 108         assert( newf != NULL );
 109         assert( !BER_BVISNULL( oldf ) );
 110         assert( !BER_BVISEMPTY( oldf ) );
 111
 112         newf->bv_len = STRLENOF( "(&(!(objectClass=" "))" ")" )
 113                 + dli->dli_oc->soc_cname.bv_len + oldf->bv_len;
 114         newf->bv_val = op->o_tmpalloc( newf->bv_len + 1, op->o_tmpmemctx );
 115         if ( newf->bv_val == NULL ) {
 116                 return -1;
 117         }
 118         ptr = lutil_strcopy( newf->bv_val, "(&(!(objectClass=" );
 119         ptr = lutil_strcopy( ptr, dli->dli_oc->soc_cname.bv_val );
 120         ptr = lutil_strcopy( ptr, "))" );
 121         ptr = lutil_strcopy( ptr, oldf->bv_val );
 122         ptr = lutil_strcopy( ptr, ")" );
 123         newf->bv_len = ptr - newf->bv_val;
 124
 125         return 0;
 126 }
 127
 128 typedef struct dynlist_sc_t {
 129         dynlist_info_t    *dlc_dli;
 130         Entry           *dlc_e;
 131 } dynlist_sc_t;
 132
 133 static int
 134 dynlist_sc_update( Operation *op, SlapReply *rs )
 135 {
 136         Entry                   *e;
 137         Attribute               *a;
 138         int                     opattrs,
 139                                 userattrs;
 140         AccessControlState      acl_state = ACL_STATE_INIT;
 141
 142         dynlist_sc_t            *dlc;
 143
 144         if ( rs->sr_type != REP_SEARCH ) {
 145                 return 0;
 146         }
 147
 148         dlc = (dynlist_sc_t *)op->o_callback->sc_private;
 149         e = dlc->dlc_e;
 150
 151         assert( e != NULL );
 152         assert( rs->sr_entry != NULL );
 153
 154         /* test access to entry */
 155         if ( !access_allowed( op, rs->sr_entry, slap_schema.si_ad_entry,
 156                                 NULL, ACL_READ, NULL ) )
 157         {
 158                 goto done;
 159         }
 160
 161         if ( dlc->dlc_dli->dli_member_ad ) {
 162
 163                 /* if access allowed, try to add values, emulating permissive
 164                  * control to silently ignore duplicates */
 165                 if ( access_allowed( op, rs->sr_entry, slap_schema.si_ad_entry,
 166                                         NULL, ACL_READ, NULL ) )
 167                 {
 168                         Modification    mod;
 169                         const char      *text = NULL;
 170                         char            textbuf[1024];
 171                         struct berval   vals[ 2 ], nvals[ 2 ];
 172
 173                         vals[ 0 ] = rs->sr_entry->e_name;
 174                         BER_BVZERO( &vals[ 1 ] );
 175                         nvals[ 0 ] = rs->sr_entry->e_nname;
 176                         BER_BVZERO( &nvals[ 1 ] );
 177
 178                         mod.sm_op = LDAP_MOD_ADD;
 179                         mod.sm_desc = dlc->dlc_dli->dli_member_ad;
 180                         mod.sm_type = dlc->dlc_dli->dli_member_ad->ad_cname;
 181                         mod.sm_values = vals;
 182                         mod.sm_nvalues = nvals;
 183
 184                         (void)modify_add_values( e, &mod, /* permissive */ 1,
 185                                         &text, textbuf, sizeof( textbuf ) );
 186                 }
 187
 188                 goto done;
 189         }
 190
 191 #ifndef SLAP_OPATTRS
 192         opattrs = ( rs->sr_attrs == NULL ) ? 0 : an_find( rs->sr_attrs, &AllOper );
 193         userattrs = ( rs->sr_attrs == NULL ) ? 1 : an_find( rs->sr_attrs, &AllUser );
 194 #else /* SLAP_OPATTRS */
 195         opattrs = SLAP_OPATTRS( rs->sr_attr_flags );
 196         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 197 #endif /* SLAP_OPATTRS */
 198
 199         for ( a = rs->sr_entry->e_attrs; a != NULL; a = a->a_next ) {
 200                 BerVarray       vals, nvals = NULL;
 201                 int             i, j,
 202                                 is_oc = a->a_desc == slap_schema.si_ad_objectClass;
 203
 204                 /* if attribute is not requested, skip it */
 205                 if ( rs->sr_attrs == NULL ) {
 206                         if ( is_at_operational( a->a_desc->ad_type ) ) {
 207                                 continue;
 208                         }
 209
 210                 } else {
 211                         if ( is_at_operational( a->a_desc->ad_type ) ) {
 212                                 if ( !opattrs && !ad_inlist( a->a_desc, rs->sr_attrs ) )
 213                                 {
 214                                         continue;
 215                                 }
 216
 217                         } else {
 218                                 if ( !userattrs && !ad_inlist( a->a_desc, rs->sr_attrs ) )
 219                                 {
 220                                         continue;
 221                                 }
 222                         }
 223                 }
 224
 225                 /* test access to attribute */
 226                 if ( op->ors_attrsonly ) {
 227                         if ( !access_allowed( op, rs->sr_entry, a->a_desc, NULL,
 228                                                 ACL_READ, &acl_state ) )
 229                         {
 230                                 continue;
 231                         }
 232                 }
 233
 234                 /* single-value check: keep first only */
 235                 if ( is_at_single_value( a->a_desc->ad_type ) ) {
 236                         if ( attr_find( e->e_attrs, a->a_desc ) != NULL ) {
 237                                 continue;
 238                         }
 239                 }
 240
 241                 /* test access to attribute */
 242                 for ( i = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ )
 243                         /* just count */ ;
 244
 245                 vals = op->o_tmpalloc( ( i + 1 ) * sizeof( struct berval ), op->o_tmpmemctx );
 246                 if ( a->a_nvals != a->a_vals ) {
 247                         nvals = op->o_tmpalloc( ( i + 1 ) * sizeof( struct berval ), op->o_tmpmemctx );
 248                 }
 249
 250                 for ( i = 0, j = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ ) {
 251                         if ( is_oc ) {
 252                                 ObjectClass     *soc = oc_bvfind( &a->a_vals[i] );
 253
 254                                 if ( soc->soc_kind == LDAP_SCHEMA_STRUCTURAL ) {
 255                                         continue;
 256                                 }
 257                         }
 258
 259                         if ( access_allowed( op, rs->sr_entry, a->a_desc,
 260                                                 &a->a_nvals[i], ACL_READ, &acl_state ) )
 261                         {
 262                                 vals[j] = a->a_vals[i];
 263                                 if ( nvals ) {
 264                                         nvals[j] = a->a_nvals[i];
 265                                 }
 266                                 j++;
 267                         }
 268                 }
 269
 270                 /* if access allowed, try to add values, emulating permissive
 271                  * control to silently ignore duplicates */
 272                 if ( j != 0 ) {
 273                         Modification    mod;
 274                         const char      *text = NULL;
 275                         char            textbuf[1024];
 276
 277                         BER_BVZERO( &vals[j] );
 278                         if ( nvals ) {
 279                                 BER_BVZERO( &nvals[j] );
 280                         }
 281
 282                         mod.sm_op = LDAP_MOD_ADD;
 283                         mod.sm_desc = a->a_desc;
 284                         mod.sm_type = a->a_desc->ad_cname;
 285                         mod.sm_values = vals;
 286                         mod.sm_nvalues = nvals;
 287
 288                         (void)modify_add_values( e, &mod, /* permissive */ 1,
 289                                         &text, textbuf, sizeof( textbuf ) );
 290                 }
 291
 292                 op->o_tmpfree( vals, op->o_tmpmemctx );
 293                 if ( nvals ) {
 294                         op->o_tmpfree( nvals, op->o_tmpmemctx );
 295                 }
 296         }
 297
 298 done:;
 299         if ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) {
 300                 entry_free( rs->sr_entry );
 301                 rs->sr_entry = NULL;
 302                 rs->sr_flags ^= REP_ENTRY_MUSTBEFREED;
 303         }
 304
 305         return 0;
 306 }
 307
 308 static int
 309 dynlist_send_entry( Operation *op, SlapReply *rs, dynlist_info_t *dli )
 310 {
 311         Attribute       *a;
 312         slap_callback   cb;
 313         Operation       o = *op;
 314         SlapReply       r = { REP_SEARCH };
 315         struct berval   *url;
 316         Entry           *e;
 317         slap_mask_t     e_flags;
 318         int             opattrs,
 319                         userattrs;
 320         dynlist_sc_t    dlc = { 0 };
 321
 322         a = attrs_find( rs->sr_entry->e_attrs, dli->dli_ad );
 323         if ( a == NULL ) {
 324                 /* FIXME: error? */
 325                 return SLAP_CB_CONTINUE;
 326         }
 327
 328         e = entry_dup( rs->sr_entry );
 329         e_flags = rs->sr_flags | ( REP_ENTRY_MODIFIABLE | REP_ENTRY_MUSTBEFREED );
 330
 331         dlc.dlc_e = e;
 332         dlc.dlc_dli = dli;
 333         cb.sc_private = &dlc;
 334         cb.sc_response = dynlist_sc_update;
 335         cb.sc_cleanup = NULL;
 336         cb.sc_next = NULL;
 337
 338         o.o_callback = &cb;
 339         o.ors_deref = LDAP_DEREF_NEVER;
 340         o.ors_limit = NULL;
 341         o.ors_tlimit = SLAP_NO_LIMIT;
 342         o.ors_slimit = SLAP_NO_LIMIT;
 343
 344 #ifndef SLAP_OPATTRS
 345         opattrs = ( rs->sr_attrs == NULL ) ? 0 : an_find( rs->sr_attrs, &AllOper );
 346         userattrs = ( rs->sr_attrs == NULL ) ? 1 : an_find( rs->sr_attrs, &AllUser );
 347 #else /* SLAP_OPATTRS */
 348         opattrs = SLAP_OPATTRS( rs->sr_attr_flags );
 349         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 350 #endif /* SLAP_OPATTRS */
 351
 352         for ( url = a->a_nvals; !BER_BVISNULL( url ); url++ ) {
 353                 LDAPURLDesc     *lud = NULL;
 354                 int             i, j;
 355                 struct berval   dn;
 356                 int             rc;
 357
 358                 BER_BVZERO( &o.o_req_dn );
 359                 BER_BVZERO( &o.o_req_ndn );
 360                 o.ors_filter = NULL;
 361                 o.ors_attrs = NULL;
 362                 BER_BVZERO( &o.ors_filterstr );
 363
 364                 if ( ldap_url_parse( url->bv_val, &lud ) != LDAP_URL_SUCCESS ) {
 365                         /* FIXME: error? */
 366                         continue;
 367                 }
 368
 369                 if ( lud->lud_host != NULL ) {
 370                         /* FIXME: host not allowed; reject as illegal? */
 371                         Debug( LDAP_DEBUG_ANY, "dynlist_send_entry(\"%s\"): "
 372                                 "illegal URI \"%s\"\n",
 373                                 e->e_name.bv_val, url->bv_val, 0 );
 374                         goto cleanup;
 375                 }
 376
 377                 if ( lud->lud_dn == NULL ) {
 378                         /* note that an empty base is not honored in terms
 379                          * of defaultSearchBase, because select_backend()
 380                          * is not aware of the defaultSearchBase option;
 381                          * this can be useful in case of a database serving
 382                          * the empty suffix */
 383                         BER_BVSTR( &dn, "" );
 384
 385                 } else {
 386                         ber_str2bv( lud->lud_dn, 0, 0, &dn );
 387                 }
 388                 rc = dnPrettyNormal( NULL, &dn, &o.o_req_dn, &o.o_req_ndn, op->o_tmpmemctx );
 389                 if ( rc != LDAP_SUCCESS ) {
 390                         /* FIXME: error? */
 391                         goto cleanup;
 392                 }
 393                 o.ors_scope = lud->lud_scope;
 394
 395                 if ( dli->dli_member_ad != NULL ) {
 396                         /* if ( lud->lud_attrs != NULL ),
 397                          * the URL should be ignored */
 398                         o.ors_attrs = slap_anlist_no_attrs;
 399
 400                 } else if ( lud->lud_attrs == NULL ) {
 401                         o.ors_attrs = rs->sr_attrs;
 402
 403                 } else {
 404                         for ( i = 0; lud->lud_attrs[i]; i++)
 405                                 /* just count */ ;
 406
 407                         o.ors_attrs = op->o_tmpcalloc( i + 1, sizeof( AttributeName ), op->o_tmpmemctx );
 408                         for ( i = 0, j = 0; lud->lud_attrs[i]; i++) {
 409                                 const char      *text = NULL;
 410
 411                                 ber_str2bv( lud->lud_attrs[i], 0, 0, &o.ors_attrs[j].an_name );
 412                                 o.ors_attrs[j].an_desc = NULL;
 413                                 (void)slap_bv2ad( &o.ors_attrs[j].an_name, &o.ors_attrs[j].an_desc, &text );
 414                                 /* FIXME: ignore errors... */
 415
 416                                 if ( rs->sr_attrs == NULL ) {
 417                                         if ( o.ors_attrs[j].an_desc != NULL &&
 418                                                         is_at_operational( o.ors_attrs[j].an_desc->ad_type ) )
 419                                         {
 420                                                 continue;
 421                                         }
 422
 423                                 } else {
 424                                         if ( o.ors_attrs[j].an_desc != NULL &&
 425                                                         is_at_operational( o.ors_attrs[j].an_desc->ad_type ) )
 426                                         {
 427                                                 if ( !opattrs && !ad_inlist( o.ors_attrs[j].an_desc, rs->sr_attrs ) )
 428                                                 {
 429                                                         continue;
 430                                                 }
 431
 432                                         } else {
 433                                                 if ( !userattrs &&
 434                                                                 o.ors_attrs[j].an_desc != NULL &&
 435                                                                 !ad_inlist( o.ors_attrs[j].an_desc, rs->sr_attrs ) )
 436                                                 {
 437                                                         continue;
 438                                                 }
 439                                         }
 440                                 }
 441
 442                                 j++;
 443                         }
 444
 445                         if ( j == 0 ) {
 446                                 goto cleanup;
 447                         }
 448
 449                         BER_BVZERO( &o.ors_attrs[j].an_name );
 450                 }
 451
 452                 if ( lud->lud_filter == NULL ) {
 453                         ber_dupbv_x( &o.ors_filterstr,
 454                                         &dli->dli_default_filter, op->o_tmpmemctx );
 455
 456                 } else {
 457                         struct berval   flt;
 458                         ber_str2bv( lud->lud_filter, 0, 0, &flt );
 459                         if ( dynlist_make_filter( op, &flt, &o.ors_filterstr ) ) {
 460                                 /* error */
 461                                 goto cleanup;
 462                         }
 463                 }
 464                 o.ors_filter = str2filter_x( op, o.ors_filterstr.bv_val );
 465                 if ( o.ors_filter == NULL ) {
 466                         goto cleanup;
 467                 }
 468
 469                 o.o_bd = select_backend( &o.o_req_ndn, 0, 1 );
 470                 if ( o.o_bd && o.o_bd->be_search ) {
 471 #ifdef SLAP_OPATTRS
 472                         r.sr_attr_flags = slap_attr_flags( o.ors_attrs );
 473 #endif /* SLAP_OPATTRS */
 474                         (void)o.o_bd->be_search( &o, &r );
 475                 }
 476
 477 cleanup:;
 478                 if ( o.ors_filter ) {
 479                         filter_free_x( &o, o.ors_filter );
 480                 }
 481                 if ( o.ors_attrs && o.ors_attrs != rs->sr_attrs
 482                                 && o.ors_attrs != slap_anlist_no_attrs )
 483                 {
 484                         op->o_tmpfree( o.ors_attrs, op->o_tmpmemctx );
 485                 }
 486                 if ( !BER_BVISNULL( &o.o_req_dn ) ) {
 487                         op->o_tmpfree( o.o_req_dn.bv_val, op->o_tmpmemctx );
 488                 }
 489                 if ( !BER_BVISNULL( &o.o_req_ndn ) ) {
 490                         op->o_tmpfree( o.o_req_ndn.bv_val, op->o_tmpmemctx );
 491                 }
 492                 assert( o.ors_filterstr.bv_val != lud->lud_filter );
 493                 op->o_tmpfree( o.ors_filterstr.bv_val, op->o_tmpmemctx );
 494                 ldap_free_urldesc( lud );
 495         }
 496
 497         rs->sr_entry = e;
 498         rs->sr_flags = e_flags;
 499
 500         return SLAP_CB_CONTINUE;
 501 }
 502
 503 static int
 504 dynlist_sc_save_entry( Operation *op, SlapReply *rs )
 505 {
 506         /* save the entry in the private field of the callback,
 507          * so it doesn't get freed (it's temporary!) */
 508         if ( rs->sr_entry != NULL ) {
 509                 dynlist_sc_t    *dlc = (dynlist_sc_t *)op->o_callback->sc_private;
 510                 dlc->dlc_e = rs->sr_entry;
 511                 rs->sr_entry = NULL;
 512         }
 513
 514         return 0;
 515 }
 516
 517 static int
 518 dynlist_compare( Operation *op, SlapReply *rs )
 519 {
 520         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 521         dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private;
 522
 523         for ( ; dli != NULL; dli = dli->dli_next ) {
 524                 if ( op->oq_compare.rs_ava->aa_desc == dli->dli_member_ad ) {
 525                         /* This compare is for one of the attributes we're
 526                          * interested in. We'll use slapd's existing dyngroup
 527                          * evaluator to get the answer we want.
 528                          */
 529                         int cache = op->o_do_not_cache;
 530
 531                         op->o_do_not_cache = 1;
 532                         rs->sr_err = backend_group( op, NULL, &op->o_req_ndn,
 533                                 &op->oq_compare.rs_ava->aa_value, dli->dli_oc, dli->dli_ad );
 534                         op->o_do_not_cache = cache;
 535                         switch ( rs->sr_err ) {
 536                         case LDAP_SUCCESS:
 537                                 rs->sr_err = LDAP_COMPARE_TRUE;
 538                                 break;
 539
 540                         case LDAP_NO_SUCH_OBJECT:
 541                                 /* NOTE: backend_group() returns noSuchObject
 542                                  * if op_ndn does not exist; however, since
 543                                  * dynamic list expansion means that the
 544                                  * member attribute is virtually present, the
 545                                  * non-existence of the asserted value implies
 546                                  * the assertion is FALSE rather than
 547                                  * UNDEFINED */
 548                                 rs->sr_err = LDAP_COMPARE_FALSE;
 549                                 break;
 550                         }
 551
 552                         return SLAP_CB_CONTINUE;
 553                 }
 554         }
 555
 556         dli = (dynlist_info_t *)on->on_bi.bi_private;
 557         for ( ; dli != NULL && rs->sr_err != LDAP_COMPARE_TRUE; dli = dli->dli_next ) {
 558                 Attribute       *a;
 559                 slap_callback   cb;
 560                 Operation       o = *op;
 561                 SlapReply       r = { REP_SEARCH };
 562                 AttributeName   an[2];
 563                 int             rc;
 564                 dynlist_sc_t    dlc = { 0 };
 565                 Entry           *e;
 566
 567                 int cache = op->o_do_not_cache;
 568                 struct berval   op_dn = op->o_dn,
 569                                 op_ndn = op->o_ndn;
 570                 BackendDB       *op_bd = op->o_bd;
 571
 572                 /* fetch the entry as rootdn (a hack to see if it exists
 573                  * and if it has the right objectClass) */
 574                 op->o_do_not_cache = 1;
 575                 op->o_dn = op->o_bd->be_rootdn;
 576                 op->o_ndn = op->o_bd->be_rootndn;
 577                 op->o_bd = select_backend( &op->o_req_ndn, 0, 0 );
 578
 579                 r.sr_err = be_entry_get_rw( op, &op->o_req_ndn,
 580                         dli->dli_oc, NULL, 0, &e );
 581                 if ( e != NULL ) {
 582                         be_entry_release_r( op, e );
 583                 }
 584                 op->o_do_not_cache = cache;
 585                 op->o_dn = op_dn;
 586                 op->o_ndn = op_ndn;
 587                 op->o_bd = op_bd;
 588                 if ( r.sr_err != LDAP_SUCCESS ) {
 589                         continue;
 590                 }
 591
 592                 /* if the entry has the right objectClass, generate
 593                  * the dynamic list and compare */
 594                 dlc.dlc_dli = dli;
 595                 cb.sc_private = &dlc;
 596                 cb.sc_response = dynlist_sc_save_entry;
 597                 cb.sc_cleanup = NULL;
 598                 cb.sc_next = NULL;
 599                 o.o_callback = &cb;
 600
 601                 o.o_tag = LDAP_REQ_SEARCH;
 602                 o.ors_limit = NULL;
 603                 o.ors_tlimit = SLAP_NO_LIMIT;
 604                 o.ors_slimit = SLAP_NO_LIMIT;
 605
 606                 o.o_bd = select_backend( &o.o_req_ndn, 0, 1 );
 607                 if ( !o.o_bd || !o.o_bd->be_search ) {
 608                         return SLAP_CB_CONTINUE;
 609                 }
 610
 611                 BER_BVSTR( &o.ors_filterstr, "(objectClass=*)" );
 612                 o.ors_filter = str2filter_x( op, o.ors_filterstr.bv_val );
 613                 if ( o.ors_filter == NULL ) {
 614                         /* FIXME: error? */
 615                         return SLAP_CB_CONTINUE;
 616                 }
 617
 618                 o.ors_scope = LDAP_SCOPE_BASE;
 619                 o.ors_deref = LDAP_DEREF_NEVER;
 620                 an[0].an_name = op->orc_ava->aa_desc->ad_cname;
 621                 an[0].an_desc = op->orc_ava->aa_desc;
 622                 BER_BVZERO( &an[1].an_name );
 623                 o.ors_attrs = an;
 624                 o.ors_attrsonly = 0;
 625
 626                 o.o_acl_priv = ACL_COMPARE;
 627
 628                 rc = o.o_bd->be_search( &o, &r );
 629                 filter_free_x( &o, o.ors_filter );
 630
 631                 if ( rc != 0 ) {
 632                         return rc;
 633                 }
 634
 635                 if ( dlc.dlc_e != NULL ) {
 636                         r.sr_entry = dlc.dlc_e;
 637                 }
 638
 639                 if ( r.sr_err != LDAP_SUCCESS || r.sr_entry == NULL ) {
 640                         /* error? */
 641                         return SLAP_CB_CONTINUE;
 642                 }
 643
 644                 for ( a = attrs_find( r.sr_entry->e_attrs, op->orc_ava->aa_desc );
 645                         a != NULL;
 646                         a = attrs_find( a->a_next, op->orc_ava->aa_desc ) )
 647                 {
 648                         /* if we're here, we got a match... */
 649                         rs->sr_err = LDAP_COMPARE_FALSE;
 650
 651                         if ( value_find_ex( op->orc_ava->aa_desc,
 652                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
 653                                         SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
 654                                 a->a_nvals, &op->orc_ava->aa_value, op->o_tmpmemctx ) == 0 )
 655                         {
 656                                 rs->sr_err = LDAP_COMPARE_TRUE;
 657                                 break;
 658                         }
 659                 }
 660
 661                 if ( r.sr_flags & REP_ENTRY_MUSTBEFREED ) {
 662                         entry_free( r.sr_entry );
 663                 }
 664         }
 665
 666         return SLAP_CB_CONTINUE;
 667 }
 668
 669 static int
 670 dynlist_response( Operation *op, SlapReply *rs )
 671 {
 672         dynlist_info_t  *dli;
 673
 674         switch ( op->o_tag ) {
 675         case LDAP_REQ_SEARCH:
 676                 if ( rs->sr_type == REP_SEARCH && !get_manageDSAit( op ) )
 677                 {
 678                         dli = dynlist_is_dynlist( op, rs );
 679                         if ( dli != NULL ) {
 680                                 return dynlist_send_entry( op, rs, dli );
 681                         }
 682                 }
 683                 break;
 684
 685         case LDAP_REQ_COMPARE:
 686                 switch ( rs->sr_err ) {
 687                 /* NOTE: we waste a few cycles running the dynamic list
 688                  * also when the result is FALSE, which occurs if the
 689                  * dynamic entry itself contains the AVA attribute  */
 690                 /* FIXME: this approach is less than optimal; a dedicated
 691                  * compare op should be implemented, that fetches the
 692                  * entry, checks if it has the appropriate objectClass
 693                  * and, in case, runs a compare thru all the URIs,
 694                  * stopping at the first positive occurrence; see ITS#3756 */
 695                 case LDAP_COMPARE_FALSE:
 696                 case LDAP_NO_SUCH_ATTRIBUTE:
 697                         return dynlist_compare( op, rs );
 698                 }
 699                 break;
 700
 701         default:
 702                 break;
 703         }
 704
 705         return SLAP_CB_CONTINUE;
 706 }
 707
 708 static int
 709 dynlist_build_def_filter( dynlist_info_t *dli )
 710 {
 711         char    *ptr;
 712
 713         dli->dli_default_filter.bv_len = STRLENOF( "(!(objectClass=" "))" )
 714                 + dli->dli_oc->soc_cname.bv_len;
 715         dli->dli_default_filter.bv_val = ch_malloc( dli->dli_default_filter.bv_len + 1 );
 716         if ( dli->dli_default_filter.bv_val == NULL ) {
 717                 Debug( LDAP_DEBUG_ANY, "dynlist_db_open: malloc failed.\n",
 718                         0, 0, 0 );
 719                 return -1;
 720         }
 721
 722         ptr = lutil_strcopy( dli->dli_default_filter.bv_val, "(!(objectClass=" );
 723         ptr = lutil_strcopy( ptr, dli->dli_oc->soc_cname.bv_val );
 724         ptr = lutil_strcopy( ptr, "))" );
 725
 726         assert( dli->dli_default_filter.bv_len == ptr - dli->dli_default_filter.bv_val );
 727
 728         return 0;
 729 }
 730
 731 #ifdef OL_2_2_COMPAT
 732 static int
 733 dynlist_db_config(
 734         BackendDB       *be,
 735         const char      *fname,
 736         int             lineno,
 737         int             argc,
 738         char            **argv )
 739 {
 740         slap_overinst   *on = (slap_overinst *)be->bd_info;
 741
 742         int             rc = 0;
 743
 744         if ( strcasecmp( argv[0], "dynlist-attrset" ) == 0 ) {
 745                 dynlist_info_t          **dlip;
 746                 ObjectClass             *oc;
 747                 AttributeDescription    *ad = NULL,
 748                                         *member_ad = NULL;
 749                 const char              *text;
 750
 751                 if ( argc < 3 || argc > 4 ) {
 752                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 753                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 754                                 "invalid arg number #%d.\n",
 755                                 fname, lineno, argc );
 756                         return 1;
 757                 }
 758
 759                 oc = oc_find( argv[1] );
 760                 if ( oc == NULL ) {
 761                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 762                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 763                                 "unable to find ObjectClass \"%s\"\n",
 764                                 fname, lineno, argv[ 1 ] );
 765                         return 1;
 766                 }
 767
 768                 rc = slap_str2ad( argv[2], &ad, &text );
 769                 if ( rc != LDAP_SUCCESS ) {
 770                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 771                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 772                                 "unable to find AttributeDescription \"%s\"\n",
 773                                 fname, lineno, argv[2] );
 774                         return 1;
 775                 }
 776
 777                 if ( !is_at_subtype( ad->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
 778                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 779                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 780                                 "AttributeDescription \"%s\" "
 781                                 "must be a subtype of \"labeledURI\"\n",
 782                                 fname, lineno, argv[2] );
 783                         return 1;
 784                 }
 785
 786                 if ( argc == 4 ) {
 787                         rc = slap_str2ad( argv[3], &member_ad, &text );
 788                         if ( rc != LDAP_SUCCESS ) {
 789                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 790                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 791                                         "unable to find AttributeDescription \"%s\"\n",
 792                                         fname, lineno, argv[3] );
 793                                 return 1;
 794                         }
 795                 }
 796
 797                 for ( dlip = (dynlist_info_t **)&on->on_bi.bi_private;
 798                         *dlip; dlip = &(*dlip)->dli_next )
 799                 {
 800                         /* The check on objectClass may be relaxed */
 801 #if 0
 802                         if ( (*dlip)->dli_oc == oc ) {
 803                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 804                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 805                                         "objectClass \"%s\" already mapped.\n",
 806                                         fname, lineno, oc->soc_cname.bv_val );
 807                                 return 1;
 808                         }
 809 #endif
 810
 811                         if ( (*dlip)->dli_ad == ad ) {
 812                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 813                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 814                                         "URL attributeDescription \"%s\" already mapped.\n",
 815                                         fname, lineno, ad->ad_cname.bv_val );
 816                                 return 1;
 817                         }
 818
 819                         if ( member_ad != NULL && (*dlip)->dli_member_ad == member_ad ) {
 820                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 821                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 822                                         "member attributeDescription \"%s\" already mapped.\n",
 823                                         fname, lineno, member_ad->ad_cname.bv_val );
 824                                 return 1;
 825                         }
 826                 }
 827
 828                 *dlip = (dynlist_info_t *)ch_calloc( 1, sizeof( dynlist_info_t ) );
 829                 (*dlip)->dli_oc = oc;
 830                 (*dlip)->dli_ad = ad;
 831                 (*dlip)->dli_member_ad = member_ad;
 832
 833                 if ( dynlist_build_def_filter( *dlip ) ) {
 834                         ch_free( *dlip );
 835                         *dlip = NULL;
 836                         return 1;
 837                 }
 838
 839         /* allow dyngroup syntax */
 840         } else if ( strcasecmp( argv[0], "dynlist-attrpair" ) == 0 ) {
 841                 dynlist_info_t          **dlip;
 842                 ObjectClass             *oc;
 843                 AttributeDescription    *ad = NULL,
 844                                         *member_ad = NULL;
 845                 const char              *text;
 846
 847                 if ( argc != 3 ) {
 848                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 849                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 850                                 "invalid arg number #%d.\n",
 851                                 fname, lineno, argc );
 852                         return 1;
 853                 }
 854
 855                 oc = oc_find( "groupOfURLs" );
 856                 if ( oc == NULL ) {
 857                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 858                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 859                                 "unable to find default ObjectClass \"groupOfURLs\"\n",
 860                                 fname, lineno, 0 );
 861                         return 1;
 862                 }
 863
 864                 rc = slap_str2ad( argv[1], &member_ad, &text );
 865                 if ( rc != LDAP_SUCCESS ) {
 866                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 867                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 868                                 "unable to find AttributeDescription \"%s\"\n",
 869                                 fname, lineno, argv[1] );
 870                         return 1;
 871                 }
 872
 873                 rc = slap_str2ad( argv[2], &ad, &text );
 874                 if ( rc != LDAP_SUCCESS ) {
 875                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 876                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 877                                 "unable to find AttributeDescription \"%s\"\n",
 878                                 fname, lineno, argv[2] );
 879                         return 1;
 880                 }
 881
 882                 if ( !is_at_subtype( ad->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
 883                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 884                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 885                                 "AttributeDescription \"%s\" "
 886                                 "must be a subtype of \"labeledURI\"\n",
 887                                 fname, lineno, argv[2] );
 888                         return 1;
 889                 }
 890
 891
 892                 for ( dlip = (dynlist_info_t **)&on->on_bi.bi_private;
 893                         *dlip; dlip = &(*dlip)->dli_next )
 894                 {
 895 #if 0
 896                         /* The check on objectClass may be relaxed */
 897                         if ( (*dlip)->dli_oc == oc ) {
 898                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 899                                         "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 900                                         "objectClass \"%s\" already mapped.\n",
 901                                         fname, lineno, oc->soc_cname.bv_val );
 902                                 return 1;
 903                         }
 904 #endif
 905
 906                         if ( (*dlip)->dli_ad == ad ) {
 907                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 908                                         "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 909                                         "URL attributeDescription \"%s\" already mapped.\n",
 910                                         fname, lineno, ad->ad_cname.bv_val );
 911                                 return 1;
 912                         }
 913
 914                         if ( member_ad != NULL && (*dlip)->dli_member_ad == member_ad ) {
 915                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 916                                         "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 917                                         "member attributeDescription \"%s\" already mapped.\n",
 918                                         fname, lineno, member_ad->ad_cname.bv_val );
 919                                 return 1;
 920                         }
 921                 }
 922
 923                 *dlip = (dynlist_info_t *)ch_calloc( 1, sizeof( dynlist_info_t ) );
 924                 (*dlip)->dli_oc = oc;
 925                 (*dlip)->dli_ad = ad;
 926                 (*dlip)->dli_member_ad = member_ad;
 927
 928                 if ( dynlist_build_def_filter( *dlip ) ) {
 929                         ch_free( *dlip );
 930                         *dlip = NULL;
 931                         return 1;
 932                 }
 933
 934         } else {
 935                 rc = SLAP_CONF_UNKNOWN;
 936         }
 937
 938         return rc;
 939 }
 940
 941 #else
 942 enum {
 943         DL_ATTRSET = 1,
 944         DL_ATTRPAIR,
 945         DL_ATTRPAIR_COMPAT,
 946         DL_LAST
 947 };
 948
 949 static ConfigDriver     dl_cfgen;
 950
 951 static ConfigTable dlcfg[] = {
 952         { "dynlist-attrset", "group-oc> <URL-ad> <member-ad",
 953                 3, 4, 0, ARG_MAGIC|DL_ATTRSET, dl_cfgen,
 954                 "( OLcfgOvAt:8.1 NAME 'olcDLattrSet' "
 955                         "DESC 'Dynamic list: <group objectClass>, <URL attributeDescription>, <member attributeDescription>' "
 956                         "EQUALITY caseIgnoreMatch "
 957                         "SYNTAX OMsDirectoryString "
 958                         "X-ORDERED 'VALUES' )",
 959                         NULL, NULL },
 960         { "dynlist-attrpair", "member-ad> <URL-ad",
 961                 3, 3, 0, ARG_MAGIC|DL_ATTRPAIR, dl_cfgen,
 962                         NULL, NULL, NULL },
 963 #ifdef TAKEOVER_DYNGROUP
 964         { "attrpair", "member-ad> <URL-ad",
 965                 3, 3, 0, ARG_MAGIC|DL_ATTRPAIR_COMPAT, dl_cfgen,
 966                         NULL, NULL, NULL },
 967 #endif
 968         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
 969 };
 970
 971 static ConfigOCs dlocs[] = {
 972         { "( OLcfgOvOc:8.1 "
 973                 "NAME 'olcDynamicList' "
 974                 "DESC 'Dynamic list configuration' "
 975                 "SUP olcOverlayConfig "
 976                 "MAY olcDLattrSet )",
 977                 Cft_Overlay, dlcfg, NULL, NULL },
 978         { NULL, 0, NULL }
 979 };
 980
 981 static int
 982 dl_cfgen( ConfigArgs *c )
 983 {
 984         slap_overinst   *on = (slap_overinst *)c->bi;
 985         dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private;
 986
 987         int             rc = 0, i;
 988
 989         if ( c->op == SLAP_CONFIG_EMIT ) {
 990                 switch( c->type ) {
 991                 case DL_ATTRSET:
 992                         for ( i = 0; dli; i++, dli = dli->dli_next ) {
 993                                 struct berval   bv;
 994                                 char            *ptr = c->msg;
 995
 996                                 assert( dli->dli_oc != NULL );
 997                                 assert( dli->dli_ad != NULL );
 998
 999                                 ptr += snprintf( c->msg, sizeof( c->msg ),
1000                                         SLAP_X_ORDERED_FMT "%s %s", i,
1001                                         dli->dli_oc->soc_cname.bv_val,
1002                                         dli->dli_ad->ad_cname.bv_val );
1003
1004                                 if ( dli->dli_member_ad != NULL ) {
1005                                         ptr[ 0 ] = ' ';
1006                                         ptr++;
1007                                         ptr = lutil_strcopy( ptr, dli->dli_member_ad->ad_cname.bv_val );
1008                                 }
1009
1010                                 bv.bv_val = c->msg;
1011                                 bv.bv_len = ptr - bv.bv_val;
1012                                 value_add_one( &c->rvalue_vals, &bv );
1013                         }
1014                         break;
1015
1016                 case DL_ATTRPAIR_COMPAT:
1017                 case DL_ATTRPAIR:
1018                         rc = 1;
1019                         break;
1020
1021                 default:
1022                         rc = 1;
1023                         break;
1024                 }
1025
1026                 return rc;
1027
1028         } else if ( c->op == LDAP_MOD_DELETE ) {
1029                 switch( c->type ) {
1030                 case DL_ATTRSET:
1031                         if ( c->valx < 0 ) {
1032                                 dynlist_info_t  *dli_next;
1033
1034                                 for ( dli_next = dli; dli_next; dli = dli_next ) {
1035                                         dli_next = dli->dli_next;
1036
1037                                         ch_free( dli->dli_default_filter.bv_val );
1038                                         ch_free( dli );
1039                                 }
1040
1041                                 on->on_bi.bi_private = NULL;
1042
1043                         } else {
1044                                 dynlist_info_t  **dlip;
1045
1046                                 for ( i = 0, dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1047                                         i < c->valx; i++ )
1048                                 {
1049                                         if ( *dlip == NULL ) {
1050                                                 return 1;
1051                                         }
1052                                         dlip = &(*dlip)->dli_next;
1053                                 }
1054
1055                                 dli = *dlip;
1056                                 *dlip = dli->dli_next;
1057                                 ch_free( dli->dli_default_filter.bv_val );
1058                                 ch_free( dli );
1059
1060                                 dli = (dynlist_info_t *)on->on_bi.bi_private;
1061                         }
1062                         break;
1063
1064                 case DL_ATTRPAIR_COMPAT:
1065                 case DL_ATTRPAIR:
1066                         rc = 1;
1067                         break;
1068
1069                 default:
1070                         rc = 1;
1071                         break;
1072                 }
1073
1074                 return 1;       /* FIXME */
1075         }
1076
1077         switch( c->type ) {
1078         case DL_ATTRSET: {
1079                 dynlist_info_t          **dlip,
1080                                         *dli_next = NULL;
1081                 ObjectClass             *oc = NULL;
1082                 AttributeDescription    *ad = NULL,
1083                                         *member_ad = NULL;
1084                 const char              *text;
1085
1086                 oc = oc_find( c->argv[ 1 ] );
1087                 if ( oc == NULL ) {
1088                         snprintf( c->msg, sizeof( c->msg ),
1089                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1090                                 "unable to find ObjectClass \"%s\"",
1091                                 c->argv[ 1 ] );
1092                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1093                                 c->log, c->msg, 0 );
1094                         return 1;
1095                 }
1096
1097                 rc = slap_str2ad( c->argv[ 2 ], &ad, &text );
1098                 if ( rc != LDAP_SUCCESS ) {
1099                         snprintf( c->msg, sizeof( c->msg ),
1100                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1101                                 "unable to find AttributeDescription \"%s\"",
1102                                 c->argv[ 2 ] );
1103                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1104                                 c->log, c->msg, 0 );
1105                         return 1;
1106                 }
1107
1108                 if ( !is_at_subtype( ad->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
1109                         snprintf( c->msg, sizeof( c->msg ),
1110                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1111                                 "AttributeDescription \"%s\" "
1112                                 "must be a subtype of \"labeledURI\"",
1113                                 c->argv[ 2 ] );
1114                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1115                                 c->log, c->msg, 0 );
1116                         return 1;
1117                 }
1118
1119                 if ( c->argc == 4 ) {
1120                         rc = slap_str2ad( c->argv[ 3 ], &member_ad, &text );
1121                         if ( rc != LDAP_SUCCESS ) {
1122                                 snprintf( c->msg, sizeof( c->msg ),
1123                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1124                                         "unable to find AttributeDescription \"%s\"\n",
1125                                         c->argv[ 3 ] );
1126                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1127                                         c->log, c->msg, 0 );
1128                                 return 1;
1129                         }
1130                 }
1131
1132                 for ( dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1133                         *dlip; dlip = &(*dlip)->dli_next )
1134                 {
1135                         /* The check on objectClass may be relaxed */
1136 #if 0
1137                         if ( (*dlip)->dli_oc == oc ) {
1138                                 snprintf( c->msg, sizeof( c->msg ),
1139                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1140                                         "objectClass \"%s\" already mapped.\n",
1141                                         oc->soc_cname.bv_val );
1142                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1143                                         c->log, c->msg, 0 );
1144                                 return 1;
1145                         }
1146 #endif
1147
1148                         if ( (*dlip)->dli_ad == ad ) {
1149                                 snprintf( c->msg, sizeof( c->msg ),
1150                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1151                                         "URL attributeDescription \"%s\" already mapped.\n",
1152                                         ad->ad_cname.bv_val );
1153                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1154                                         c->log, c->msg, 0 );
1155                                 return 1;
1156                         }
1157
1158                         if ( member_ad != NULL && (*dlip)->dli_member_ad == member_ad ) {
1159                                 snprintf( c->msg, sizeof( c->msg ),
1160                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1161                                         "member attributeDescription \"%s\" already mapped.\n",
1162                                         member_ad->ad_cname.bv_val );
1163                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1164                                         c->log, c->msg, 0 );
1165                                 return 1;
1166                         }
1167                 }
1168
1169                 if ( c->valx > 0 ) {
1170                         int     i;
1171
1172                         for ( i = 0, dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1173                                 i < c->valx; i++ )
1174                         {
1175                                 if ( *dlip == NULL ) {
1176                                         snprintf( c->msg, sizeof( c->msg ),
1177                                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1178                                                 "invalid index {%d}\n",
1179                                                 c->valx );
1180                                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1181                                                 c->log, c->msg, 0 );
1182                                         return 1;
1183                                 }
1184                                 dlip = &(*dlip)->dli_next;
1185                         }
1186                         dli_next = *dlip;
1187
1188                 } else {
1189                         for ( dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1190                                 *dlip; dlip = &(*dlip)->dli_next )
1191                                 /* goto last */;
1192                 }
1193
1194                 *dlip = (dynlist_info_t *)ch_calloc( 1, sizeof( dynlist_info_t ) );
1195
1196                 (*dlip)->dli_oc = oc;
1197                 (*dlip)->dli_ad = ad;
1198                 (*dlip)->dli_member_ad = member_ad;
1199                 (*dlip)->dli_next = dli_next;
1200
1201                 rc = dynlist_build_def_filter( *dlip );
1202
1203                 } break;
1204
1205         case DL_ATTRPAIR_COMPAT:
1206                 snprintf( c->msg, sizeof( c->msg ),
1207                         "warning: \"attrpair\" only supported for limited "
1208                         "backward compatibility with overlay \"dyngroup\"" );
1209                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->msg, 0 );
1210                 /* fallthru */
1211
1212         case DL_ATTRPAIR: {
1213                 dynlist_info_t          **dlip;
1214                 ObjectClass             *oc = NULL;
1215                 AttributeDescription    *ad = NULL,
1216                                         *member_ad = NULL;
1217                 const char              *text;
1218
1219                 oc = oc_find( "groupOfURLs" );
1220                 if ( oc == NULL ) {
1221                         snprintf( c->msg, sizeof( c->msg ),
1222                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1223                                 "unable to find default ObjectClass \"groupOfURLs\"" );
1224                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1225                                 c->log, c->msg, 0 );
1226                         return 1;
1227                 }
1228
1229                 rc = slap_str2ad( c->argv[ 1 ], &member_ad, &text );
1230                 if ( rc != LDAP_SUCCESS ) {
1231                         snprintf( c->msg, sizeof( c->msg ),
1232                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1233                                 "unable to find AttributeDescription \"%s\"",
1234                                 c->argv[ 1 ] );
1235                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1236                                 c->log, c->msg, 0 );
1237                         return 1;
1238                 }
1239
1240                 rc = slap_str2ad( c->argv[ 2 ], &ad, &text );
1241                 if ( rc != LDAP_SUCCESS ) {
1242                         snprintf( c->msg, sizeof( c->msg ),
1243                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1244                                 "unable to find AttributeDescription \"%s\"\n",
1245                                 c->argv[ 2 ] );
1246                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1247                                 c->log, c->msg, 0 );
1248                         return 1;
1249                 }
1250
1251                 if ( !is_at_subtype( ad->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
1252                         snprintf( c->msg, sizeof( c->msg ),
1253                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1254                                 "AttributeDescription \"%s\" "
1255                                 "must be a subtype of \"labeledURI\"",
1256                                 c->argv[ 2 ] );
1257                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1258                                 c->log, c->msg, 0 );
1259                         return 1;
1260                 }
1261
1262                 for ( dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1263                         *dlip; dlip = &(*dlip)->dli_next )
1264                 {
1265                         /* The check on objectClass may be relaxed */
1266 #if 0
1267                         if ( (*dlip)->dli_oc == oc ) {
1268                                 snprintf( c->msg, sizeof( c->msg ),
1269                                         "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1270                                         "objectClass \"%s\" already mapped.\n",
1271                                         oc->soc_cname.bv_val );
1272                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1273                                         c->log, c->msg, 0 );
1274                                 return 1;
1275                         }
1276 #endif
1277
1278                         if ( (*dlip)->dli_ad == ad ) {
1279                                 snprintf( c->msg, sizeof( c->msg ),
1280                                         "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1281                                         "URL attributeDescription \"%s\" already mapped.\n",
1282                                         ad->ad_cname.bv_val );
1283                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1284                                         c->log, c->msg, 0 );
1285                                 return 1;
1286                         }
1287
1288                         if ( member_ad != NULL && (*dlip)->dli_member_ad == member_ad ) {
1289                                 snprintf( c->msg, sizeof( c->msg ),
1290                                         "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1291                                         "member attributeDescription \"%s\" already mapped.\n",
1292                                         member_ad->ad_cname.bv_val );
1293                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1294                                         c->log, c->msg, 0 );
1295                                 return 1;
1296                         }
1297                 }
1298
1299                 *dlip = (dynlist_info_t *)ch_calloc( 1, sizeof( dynlist_info_t ) );
1300
1301                 (*dlip)->dli_oc = oc;
1302                 (*dlip)->dli_ad = ad;
1303                 (*dlip)->dli_member_ad = member_ad;
1304
1305                 rc = dynlist_build_def_filter( *dlip );
1306
1307                 } break;
1308
1309         default:
1310                 rc = 1;
1311                 break;
1312         }
1313
1314         return rc;
1315 }
1316 #endif
1317
1318 static int
1319 dynlist_db_open(
1320         BackendDB       *be )
1321 {
1322         slap_overinst           *on = (slap_overinst *) be->bd_info;
1323         dynlist_info_t          *dli = (dynlist_info_t *)on->on_bi.bi_private;
1324         ObjectClass             *oc = NULL;
1325         AttributeDescription    *ad = NULL;
1326
1327         if ( dli == NULL ) {
1328                 dli = ch_calloc( 1, sizeof( dynlist_info_t ) );
1329                 on->on_bi.bi_private = (void *)dli;
1330         }
1331
1332         for ( ; dli; dli = dli->dli_next ) {
1333                 const char      *text;
1334                 int             rc;
1335
1336                 if ( dli->dli_oc == NULL ) {
1337                         if ( oc == NULL ) {
1338                                 oc = oc_find( "groupOfURLs" );
1339                                 if ( oc == NULL ) {
1340                                         Debug( LDAP_DEBUG_ANY, "dynlist_db_open: "
1341                                                 "unable to fetch objectClass \"groupOfURLs\".\n",
1342                                                 0, 0, 0 );
1343                                         return 1;
1344                                 }
1345                         }
1346
1347                         dli->dli_oc = oc;
1348                 }
1349
1350                 if ( dli->dli_ad == NULL ) {
1351                         if ( ad == NULL ) {
1352                                 rc = slap_str2ad( "memberURL", &ad, &text );
1353                                 if ( rc != LDAP_SUCCESS ) {
1354                                         Debug( LDAP_DEBUG_ANY, "dynlist_db_open: "
1355                                                 "unable to fetch attributeDescription \"memberURL\": %d (%s).\n",
1356                                                 rc, text, 0 );
1357                                         return 1;
1358                                 }
1359                         }
1360
1361                         dli->dli_ad = ad;
1362                 }
1363
1364                 if ( BER_BVISNULL( &dli->dli_default_filter ) ) {
1365                         rc = dynlist_build_def_filter( dli );
1366                         if ( rc != 0 ) {
1367                                 return rc;
1368                         }
1369                 }
1370         }
1371
1372         return 0;
1373 }
1374
1375 static int
1376 dynlist_db_destroy(
1377         BackendDB       *be )
1378 {
1379         slap_overinst   *on = (slap_overinst *) be->bd_info;
1380
1381         if ( on->on_bi.bi_private ) {
1382                 dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private,
1383                                 *dli_next;
1384
1385                 for ( dli_next = dli; dli_next; dli = dli_next ) {
1386                         dli_next = dli->dli_next;
1387
1388                         ch_free( dli->dli_default_filter.bv_val );
1389                         ch_free( dli );
1390                 }
1391         }
1392
1393         return 0;
1394 }
1395
1396 static slap_overinst    dynlist = { { NULL } };
1397 #ifdef TAKEOVER_DYNGROUP
1398 static char             *obsolete_names[] = {
1399         "dyngroup",
1400         NULL
1401 };
1402 #endif
1403
1404 #if SLAPD_OVER_DYNLIST == SLAPD_MOD_DYNAMIC
1405 static
1406 #endif /* SLAPD_OVER_DYNLIST == SLAPD_MOD_DYNAMIC */
1407 int
1408 dynlist_initialize(void)
1409 {
1410 #ifndef OL_2_2_COMPAT
1411         int     rc = 0;
1412 #endif
1413
1414         dynlist.on_bi.bi_type = "dynlist";
1415
1416 #ifdef TAKEOVER_DYNGROUP
1417         /* makes dynlist incompatible with dyngroup */
1418         dynlist.on_bi.bi_obsolete_names = obsolete_names;
1419 #endif
1420
1421 #ifdef OL_2_2_COMPAT
1422         dynlist.on_bi.bi_db_config = dynlist_db_config;
1423 #else
1424         dynlist.on_bi.bi_db_config = config_generic_wrapper;
1425 #endif
1426         dynlist.on_bi.bi_db_open = dynlist_db_open;
1427         dynlist.on_bi.bi_db_destroy = dynlist_db_destroy;
1428
1429         dynlist.on_response = dynlist_response;
1430
1431 #ifndef OL_2_2_COMPAT
1432         dynlist.on_bi.bi_cf_ocs = dlocs;
1433
1434         rc = config_register_schema( dlcfg, dlocs );
1435         if ( rc ) {
1436                 return rc;
1437         }
1438 #endif
1439
1440         return overlay_register( &dynlist );
1441 }
1442
1443 #if SLAPD_OVER_DYNLIST == SLAPD_MOD_DYNAMIC
1444 int
1445 init_module( int argc, char *argv[] )
1446 {
1447         return dynlist_initialize();
1448 }
1449 #endif
1450
1451 #endif /* SLAPD_OVER_DYNLIST */