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 2003-2009 The OpenLDAP Foundation.
   6  * Portions Copyright 2004-2005 Pierangelo Masarati.
   7  * Portions Copyright 2008 Emmanuel Dreyfus.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted only as authorized by the OpenLDAP
  12  * Public License.
  13  *
  14  * A copy of this license is available in the file LICENSE in the
  15  * top-level directory of the distribution or, alternatively, at
  16  * <http://www.OpenLDAP.org/license.html>.
  17  */
  18 /* ACKNOWLEDGEMENTS:
  19  * This work was initially developed by Pierangelo Masarati
  20  * for SysNet s.n.c., for inclusion in OpenLDAP Software.
  21  */
  22
  23 #include "portable.h"
  24
  25 #ifdef SLAPD_OVER_DYNLIST
  26
  27 #if LDAP_VENDOR_VERSION_MINOR == X || LDAP_VENDOR_VERSION_MINOR > 3
  28 #if SLAPD_OVER_DYNGROUP != SLAPD_MOD_STATIC
  29 #define TAKEOVER_DYNGROUP
  30 #endif
  31 #else
  32 #if LDAP_VENDOR_VERSION_MINOR < 3
  33 #define OL_2_2_COMPAT
  34 #endif
  35 #endif
  36
  37 #include <stdio.h>
  38
  39 #include <ac/string.h>
  40
  41 #include "slap.h"
  42 #ifndef OL_2_2_COMPAT
  43 #include "config.h"
  44 #endif
  45 #include "lutil.h"
  46
  47 /* FIXME: the code differs if SLAP_OPATTRS is defined or not;
  48  * SLAP_OPATTRS is not defined in 2.2 yet, while this overlay
  49  * expects HEAD code at least later than August 6, 2004. */
  50 /* FIXME: slap_anlist_no_attrs was introduced in 2.3; here it
  51  * is anticipated to allow using this overlay with 2.2. */
  52
  53 #ifdef OL_2_2_COMPAT
  54 static AttributeName anlist_no_attrs[] = {
  55         { BER_BVC( LDAP_NO_ATTRS ), NULL, 0, NULL },
  56         { BER_BVNULL, NULL, 0, NULL }
  57 };
  58
  59 static AttributeName *slap_anlist_no_attrs = anlist_no_attrs;
  60 #endif
  61
  62 static AttributeDescription *ad_dgIdentity, *ad_dgAuthz;
  63
  64 typedef struct dynlist_map_t {
  65         AttributeDescription    *dlm_member_ad;
  66         AttributeDescription    *dlm_mapped_ad;
  67         struct dynlist_map_t    *dlm_next;
  68 } dynlist_map_t;
  69
  70 typedef struct dynlist_info_t {
  71         ObjectClass             *dli_oc;
  72         AttributeDescription    *dli_ad;
  73         struct dynlist_map_t    *dli_dlm;
  74         struct berval           dli_uri;
  75         LDAPURLDesc             *dli_lud;
  76         struct berval           dli_uri_nbase;
  77         Filter                  *dli_uri_filter;
  78         struct berval           dli_default_filter;
  79         struct dynlist_info_t   *dli_next;
  80 } dynlist_info_t;
  81
  82 #define DYNLIST_USAGE \
  83         "\"dynlist-attrset <oc> [uri] <URL-ad> [[<mapped-ad>:]<member-ad> ...]\": "
  84
  85 static dynlist_info_t *
  86 dynlist_is_dynlist_next( Operation *op, SlapReply *rs, dynlist_info_t *old_dli )
  87 {
  88         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
  89         dynlist_info_t  *dli;
  90
  91         Attribute       *a;
  92
  93         if ( old_dli == NULL ) {
  94                 dli = (dynlist_info_t *)on->on_bi.bi_private;
  95
  96         } else {
  97                 dli = old_dli->dli_next;
  98         }
  99
 100         a = attrs_find( rs->sr_entry->e_attrs, slap_schema.si_ad_objectClass );
 101         if ( a == NULL ) {
 102                 /* FIXME: objectClass must be present; for non-storage
 103                  * backends, like back-ldap, it needs to be added
 104                  * to the requested attributes */
 105                 return NULL;
 106         }
 107
 108         for ( ; dli; dli = dli->dli_next ) {
 109                 if ( dli->dli_lud != NULL ) {
 110                         /* check base and scope */
 111                         if ( !BER_BVISNULL( &dli->dli_uri_nbase ) ) {
 112                                 int d = rs->sr_entry->e_nname.bv_len - dli->dli_uri_nbase.bv_len;
 113
 114                                 if ( d < 0 ) {
 115                                         continue;
 116                                 }
 117
 118                                 if ( !dnIsSuffix( &rs->sr_entry->e_nname, &dli->dli_uri_nbase ) ) {
 119                                         continue;
 120                                 }
 121
 122                                 switch ( dli->dli_lud->lud_scope ) {
 123                                 case LDAP_SCOPE_BASE:
 124                                         if ( d != 0 ) {
 125                                                 continue;
 126                                         }
 127                                         break;
 128
 129                                 case LDAP_SCOPE_ONELEVEL: {
 130                                         struct berval pdn;
 131
 132                                         dnParent( &rs->sr_entry->e_nname, &pdn );
 133                                         if ( pdn.bv_len != dli->dli_uri_nbase.bv_len ) {
 134                                                 continue;
 135                                         }
 136                                         } break;
 137
 138                                 case LDAP_SCOPE_SUBORDINATE:
 139                                         if ( d == 0 ) {
 140                                                 continue;
 141                                         }
 142                                         break;
 143
 144                                 case LDAP_SCOPE_SUBTREE:
 145                                 case LDAP_SCOPE_DEFAULT:
 146                                         break;
 147
 148                                 default:
 149                                         continue;
 150                                 }
 151                         }
 152
 153                         /* check filter */
 154                         if ( dli->dli_uri_filter && test_filter( op, rs->sr_entry, dli->dli_uri_filter ) != LDAP_COMPARE_TRUE ) {
 155                                 continue;
 156                         }
 157                 }
 158
 159                 if ( attr_valfind( a,
 160                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
 161                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
 162                                 &dli->dli_oc->soc_cname, NULL,
 163                                 op->o_tmpmemctx ) == 0 )
 164                 {
 165                         return dli;
 166                 }
 167         }
 168
 169         return NULL;
 170 }
 171
 172 static int
 173 dynlist_make_filter( Operation *op, struct berval *oldf, struct berval *newf )
 174 {
 175         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 176         dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private;
 177
 178         char            *ptr;
 179
 180         assert( oldf != NULL );
 181         assert( newf != NULL );
 182         assert( !BER_BVISNULL( oldf ) );
 183         assert( !BER_BVISEMPTY( oldf ) );
 184
 185         newf->bv_len = STRLENOF( "(&(!(objectClass=" "))" ")" )
 186                 + dli->dli_oc->soc_cname.bv_len + oldf->bv_len;
 187         newf->bv_val = op->o_tmpalloc( newf->bv_len + 1, op->o_tmpmemctx );
 188         if ( newf->bv_val == NULL ) {
 189                 return -1;
 190         }
 191         ptr = lutil_strcopy( newf->bv_val, "(&(!(objectClass=" );
 192         ptr = lutil_strcopy( ptr, dli->dli_oc->soc_cname.bv_val );
 193         ptr = lutil_strcopy( ptr, "))" );
 194         ptr = lutil_strcopy( ptr, oldf->bv_val );
 195         ptr = lutil_strcopy( ptr, ")" );
 196         newf->bv_len = ptr - newf->bv_val;
 197
 198         return 0;
 199 }
 200
 201 typedef struct dynlist_sc_t {
 202         dynlist_info_t    *dlc_dli;
 203         Entry           *dlc_e;
 204 } dynlist_sc_t;
 205
 206 static int
 207 dynlist_sc_update( Operation *op, SlapReply *rs )
 208 {
 209         Entry                   *e;
 210         Attribute               *a;
 211         int                     opattrs,
 212                                 userattrs;
 213         AccessControlState      acl_state = ACL_STATE_INIT;
 214
 215         dynlist_sc_t            *dlc;
 216         dynlist_map_t           *dlm;
 217
 218         if ( rs->sr_type != REP_SEARCH ) {
 219                 return 0;
 220         }
 221
 222         dlc = (dynlist_sc_t *)op->o_callback->sc_private;
 223         e = dlc->dlc_e;
 224
 225         assert( e != NULL );
 226         assert( rs->sr_entry != NULL );
 227
 228         /* test access to entry */
 229         if ( !access_allowed( op, rs->sr_entry, slap_schema.si_ad_entry,
 230                                 NULL, ACL_READ, NULL ) )
 231         {
 232                 goto done;
 233         }
 234
 235         /* if there is only one member_ad, and it's not mapped,
 236          * consider it as old-style member listing */
 237         dlm = dlc->dlc_dli->dli_dlm;
 238         if ( dlm && dlm->dlm_mapped_ad == NULL && dlm->dlm_next == NULL ) {
 239                 /* if access allowed, try to add values, emulating permissive
 240                  * control to silently ignore duplicates */
 241                 if ( access_allowed( op, rs->sr_entry, slap_schema.si_ad_entry,
 242                                         NULL, ACL_READ, NULL ) )
 243                 {
 244                         Modification    mod;
 245                         const char      *text = NULL;
 246                         char            textbuf[1024];
 247                         struct berval   vals[ 2 ], nvals[ 2 ];
 248
 249                         vals[ 0 ] = rs->sr_entry->e_name;
 250                         BER_BVZERO( &vals[ 1 ] );
 251                         nvals[ 0 ] = rs->sr_entry->e_nname;
 252                         BER_BVZERO( &nvals[ 1 ] );
 253
 254                         mod.sm_op = LDAP_MOD_ADD;
 255                         mod.sm_desc = dlm->dlm_member_ad;
 256                         mod.sm_type = dlm->dlm_member_ad->ad_cname;
 257                         mod.sm_values = vals;
 258                         mod.sm_nvalues = nvals;
 259                         mod.sm_numvals = 1;
 260
 261                         (void)modify_add_values( e, &mod, /* permissive */ 1,
 262                                         &text, textbuf, sizeof( textbuf ) );
 263                 }
 264
 265                 goto done;
 266         }
 267
 268 #ifndef SLAP_OPATTRS
 269         opattrs = ( rs->sr_attrs == NULL ) ? 0 : an_find( rs->sr_attrs, &AllOper );
 270         userattrs = ( rs->sr_attrs == NULL ) ? 1 : an_find( rs->sr_attrs, &AllUser );
 271 #else /* SLAP_OPATTRS */
 272         opattrs = SLAP_OPATTRS( rs->sr_attr_flags );
 273         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 274 #endif /* SLAP_OPATTRS */
 275
 276         for ( a = rs->sr_entry->e_attrs; a != NULL; a = a->a_next ) {
 277                 BerVarray       vals, nvals = NULL;
 278                 int             i, j,
 279                                 is_oc = a->a_desc == slap_schema.si_ad_objectClass;
 280
 281                 /* if attribute is not requested, skip it */
 282                 if ( rs->sr_attrs == NULL ) {
 283                         if ( is_at_operational( a->a_desc->ad_type ) ) {
 284                                 continue;
 285                         }
 286
 287                 } else {
 288                         if ( is_at_operational( a->a_desc->ad_type ) ) {
 289                                 if ( !opattrs && !ad_inlist( a->a_desc, rs->sr_attrs ) )
 290                                 {
 291                                         continue;
 292                                 }
 293
 294                         } else {
 295                                 if ( !userattrs && !ad_inlist( a->a_desc, rs->sr_attrs ) )
 296                                 {
 297                                         continue;
 298                                 }
 299                         }
 300                 }
 301
 302                 /* test access to attribute */
 303                 if ( op->ors_attrsonly ) {
 304                         if ( !access_allowed( op, rs->sr_entry, a->a_desc, NULL,
 305                                                 ACL_READ, &acl_state ) )
 306                         {
 307                                 continue;
 308                         }
 309                 }
 310
 311                 /* single-value check: keep first only */
 312                 if ( is_at_single_value( a->a_desc->ad_type ) ) {
 313                         if ( attr_find( e->e_attrs, a->a_desc ) != NULL ) {
 314                                 continue;
 315                         }
 316                 }
 317
 318                 /* test access to attribute */
 319                 i = a->a_numvals;
 320
 321                 vals = op->o_tmpalloc( ( i + 1 ) * sizeof( struct berval ), op->o_tmpmemctx );
 322                 if ( a->a_nvals != a->a_vals ) {
 323                         nvals = op->o_tmpalloc( ( i + 1 ) * sizeof( struct berval ), op->o_tmpmemctx );
 324                 }
 325
 326                 for ( i = 0, j = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ ) {
 327                         if ( is_oc ) {
 328                                 ObjectClass     *soc = oc_bvfind( &a->a_vals[i] );
 329
 330                                 if ( soc->soc_kind == LDAP_SCHEMA_STRUCTURAL ) {
 331                                         continue;
 332                                 }
 333                         }
 334
 335                         if ( access_allowed( op, rs->sr_entry, a->a_desc,
 336                                                 &a->a_nvals[i], ACL_READ, &acl_state ) )
 337                         {
 338                                 vals[j] = a->a_vals[i];
 339                                 if ( nvals ) {
 340                                         nvals[j] = a->a_nvals[i];
 341                                 }
 342                                 j++;
 343                         }
 344                 }
 345
 346                 /* if access allowed, try to add values, emulating permissive
 347                  * control to silently ignore duplicates */
 348                 if ( j != 0 ) {
 349                         Modification    mod;
 350                         const char      *text = NULL;
 351                         char            textbuf[1024];
 352                         dynlist_map_t   *dlm;
 353                         AttributeDescription *ad;
 354
 355                         BER_BVZERO( &vals[j] );
 356                         if ( nvals ) {
 357                                 BER_BVZERO( &nvals[j] );
 358                         }
 359
 360                         ad = a->a_desc;
 361                         for ( dlm = dlc->dlc_dli->dli_dlm; dlm; dlm = dlm->dlm_next ) {
 362                                 if ( dlm->dlm_member_ad == a->a_desc ) {
 363                                         if ( dlm->dlm_mapped_ad ) {
 364                                                 ad = dlm->dlm_mapped_ad;
 365                                         }
 366                                         break;
 367                                 }
 368                         }
 369
 370                         mod.sm_op = LDAP_MOD_ADD;
 371                         mod.sm_desc = ad;
 372                         mod.sm_type = ad->ad_cname;
 373                         mod.sm_values = vals;
 374                         mod.sm_nvalues = nvals;
 375                         mod.sm_numvals = j;
 376
 377                         (void)modify_add_values( e, &mod, /* permissive */ 1,
 378                                         &text, textbuf, sizeof( textbuf ) );
 379                 }
 380
 381                 op->o_tmpfree( vals, op->o_tmpmemctx );
 382                 if ( nvals ) {
 383                         op->o_tmpfree( nvals, op->o_tmpmemctx );
 384                 }
 385         }
 386
 387 done:;
 388         if ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) {
 389                 entry_free( rs->sr_entry );
 390                 rs->sr_entry = NULL;
 391                 rs->sr_flags ^= REP_ENTRY_MUSTBEFREED;
 392         }
 393
 394         return 0;
 395 }
 396
 397 static int
 398 dynlist_prepare_entry( Operation *op, SlapReply *rs, dynlist_info_t *dli )
 399 {
 400         Attribute       *a, *id = NULL;
 401         slap_callback   cb;
 402         Operation       o = *op;
 403         SlapReply       r = { REP_SEARCH };
 404         struct berval   *url;
 405         Entry           *e;
 406         slap_mask_t     e_flags;
 407         int             opattrs,
 408                         userattrs;
 409         dynlist_sc_t    dlc = { 0 };
 410         dynlist_map_t   *dlm;
 411
 412         a = attrs_find( rs->sr_entry->e_attrs, dli->dli_ad );
 413         if ( a == NULL ) {
 414                 /* FIXME: error? */
 415                 return SLAP_CB_CONTINUE;
 416         }
 417
 418 #ifndef SLAP_OPATTRS
 419         opattrs = ( rs->sr_attrs == NULL ) ? 0 : an_find( rs->sr_attrs, &AllOper );
 420         userattrs = ( rs->sr_attrs == NULL ) ? 1 : an_find( rs->sr_attrs, &AllUser );
 421 #else /* SLAP_OPATTRS */
 422         opattrs = SLAP_OPATTRS( rs->sr_attr_flags );
 423         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 424 #endif /* SLAP_OPATTRS */
 425
 426         /* Don't generate member list if it wasn't requested */
 427         for ( dlm = dli->dli_dlm; dlm; dlm = dlm->dlm_next ) {
 428                 AttributeDescription *ad = dlm->dlm_mapped_ad ? dlm->dlm_mapped_ad : dlm->dlm_member_ad;
 429                 if ( userattrs || ad_inlist( ad, rs->sr_attrs ) )
 430                         break;
 431         }
 432         if ( dli->dli_dlm && !dlm )
 433                 return SLAP_CB_CONTINUE;
 434
 435         if ( ad_dgIdentity && ( id = attrs_find( rs->sr_entry->e_attrs, ad_dgIdentity ))) {
 436                 Attribute *authz = NULL;
 437
 438                 /* if not rootdn and dgAuthz is present,
 439                  * check if user can be authorized as dgIdentity */
 440                 if ( ad_dgAuthz && !BER_BVISEMPTY( &id->a_nvals[0] ) && !be_isroot( op )
 441                         && ( authz = attrs_find( rs->sr_entry->e_attrs, ad_dgAuthz ) ) )
 442                 {
 443                         if ( slap_sasl_matches( op, authz->a_nvals,
 444                                 &o.o_ndn, &o.o_ndn ) != LDAP_SUCCESS )
 445                         {
 446                                 return SLAP_CB_CONTINUE;
 447                         }
 448                 }
 449
 450                 o.o_dn = id->a_vals[0];
 451                 o.o_ndn = id->a_nvals[0];
 452                 o.o_groups = NULL;
 453         }
 454
 455         e_flags = rs->sr_flags;
 456         if ( !( rs->sr_flags & REP_ENTRY_MODIFIABLE ) ) {
 457                 e = entry_dup( rs->sr_entry );
 458                 e_flags |= ( REP_ENTRY_MODIFIABLE | REP_ENTRY_MUSTBEFREED );
 459         } else {
 460                 e = rs->sr_entry;
 461         }
 462
 463         dlc.dlc_e = e;
 464         dlc.dlc_dli = dli;
 465         cb.sc_private = &dlc;
 466         cb.sc_response = dynlist_sc_update;
 467         cb.sc_cleanup = NULL;
 468         cb.sc_next = NULL;
 469
 470         o.o_callback = &cb;
 471         o.ors_deref = LDAP_DEREF_NEVER;
 472         o.ors_limit = NULL;
 473         o.ors_tlimit = SLAP_NO_LIMIT;
 474         o.ors_slimit = SLAP_NO_LIMIT;
 475
 476         for ( url = a->a_nvals; !BER_BVISNULL( url ); url++ ) {
 477                 LDAPURLDesc     *lud = NULL;
 478                 int             i, j;
 479                 struct berval   dn;
 480                 int             rc;
 481
 482                 BER_BVZERO( &o.o_req_dn );
 483                 BER_BVZERO( &o.o_req_ndn );
 484                 o.ors_filter = NULL;
 485                 o.ors_attrs = NULL;
 486                 BER_BVZERO( &o.ors_filterstr );
 487
 488                 if ( ldap_url_parse( url->bv_val, &lud ) != LDAP_URL_SUCCESS ) {
 489                         /* FIXME: error? */
 490                         continue;
 491                 }
 492
 493                 if ( lud->lud_host != NULL ) {
 494                         /* FIXME: host not allowed; reject as illegal? */
 495                         Debug( LDAP_DEBUG_ANY, "dynlist_prepare_entry(\"%s\"): "
 496                                 "illegal URI \"%s\"\n",
 497                                 e->e_name.bv_val, url->bv_val, 0 );
 498                         goto cleanup;
 499                 }
 500
 501                 if ( lud->lud_dn == NULL ) {
 502                         /* note that an empty base is not honored in terms
 503                          * of defaultSearchBase, because select_backend()
 504                          * is not aware of the defaultSearchBase option;
 505                          * this can be useful in case of a database serving
 506                          * the empty suffix */
 507                         BER_BVSTR( &dn, "" );
 508
 509                 } else {
 510                         ber_str2bv( lud->lud_dn, 0, 0, &dn );
 511                 }
 512                 rc = dnPrettyNormal( NULL, &dn, &o.o_req_dn, &o.o_req_ndn, op->o_tmpmemctx );
 513                 if ( rc != LDAP_SUCCESS ) {
 514                         /* FIXME: error? */
 515                         goto cleanup;
 516                 }
 517                 o.ors_scope = lud->lud_scope;
 518
 519                 for ( dlm = dli->dli_dlm; dlm; dlm = dlm->dlm_next ) {
 520                         if ( dlm->dlm_mapped_ad != NULL ) {
 521                                 break;
 522                         }
 523                 }
 524
 525                 if ( dli->dli_dlm && !dlm ) {
 526                         /* if ( lud->lud_attrs != NULL ),
 527                          * the URL should be ignored */
 528                         o.ors_attrs = slap_anlist_no_attrs;
 529
 530                 } else if ( lud->lud_attrs == NULL ) {
 531                         o.ors_attrs = rs->sr_attrs;
 532
 533                 } else {
 534                         for ( i = 0; lud->lud_attrs[i]; i++)
 535                                 /* just count */ ;
 536
 537                         o.ors_attrs = op->o_tmpcalloc( i + 1, sizeof( AttributeName ), op->o_tmpmemctx );
 538                         for ( i = 0, j = 0; lud->lud_attrs[i]; i++) {
 539                                 const char      *text = NULL;
 540
 541                                 ber_str2bv( lud->lud_attrs[i], 0, 0, &o.ors_attrs[j].an_name );
 542                                 o.ors_attrs[j].an_desc = NULL;
 543                                 (void)slap_bv2ad( &o.ors_attrs[j].an_name, &o.ors_attrs[j].an_desc, &text );
 544                                 /* FIXME: ignore errors... */
 545
 546                                 if ( rs->sr_attrs == NULL ) {
 547                                         if ( o.ors_attrs[j].an_desc != NULL &&
 548                                                         is_at_operational( o.ors_attrs[j].an_desc->ad_type ) )
 549                                         {
 550                                                 continue;
 551                                         }
 552
 553                                 } else {
 554                                         if ( o.ors_attrs[j].an_desc != NULL &&
 555                                                         is_at_operational( o.ors_attrs[j].an_desc->ad_type ) )
 556                                         {
 557                                                 if ( !opattrs ) {
 558                                                         continue;
 559                                                 }
 560
 561                                                 if ( !ad_inlist( o.ors_attrs[j].an_desc, rs->sr_attrs ) ) {
 562                                                         /* lookup if mapped -- linear search,
 563                                                          * not very efficient unless list
 564                                                          * is very short */
 565                                                         for ( dlm = dli->dli_dlm; dlm; dlm = dlm->dlm_next ) {
 566                                                                 if ( dlm->dlm_member_ad == o.ors_attrs[j].an_desc ) {
 567                                                                         break;
 568                                                                 }
 569                                                         }
 570
 571                                                         if ( dlm == NULL ) {
 572                                                                 continue;
 573                                                         }
 574                                                 }
 575
 576                                         } else {
 577                                                 if ( !userattrs &&
 578                                                                 o.ors_attrs[j].an_desc != NULL &&
 579                                                                 !ad_inlist( o.ors_attrs[j].an_desc, rs->sr_attrs ) )
 580                                                 {
 581                                                         /* lookup if mapped -- linear search,
 582                                                          * not very efficient unless list
 583                                                          * is very short */
 584                                                         for ( dlm = dli->dli_dlm; dlm; dlm = dlm->dlm_next ) {
 585                                                                 if ( dlm->dlm_member_ad == o.ors_attrs[j].an_desc ) {
 586                                                                         break;
 587                                                                 }
 588                                                         }
 589
 590                                                         if ( dlm == NULL ) {
 591                                                                 continue;
 592                                                         }
 593                                                 }
 594                                         }
 595                                 }
 596
 597                                 j++;
 598                         }
 599
 600                         if ( j == 0 ) {
 601                                 goto cleanup;
 602                         }
 603
 604                         BER_BVZERO( &o.ors_attrs[j].an_name );
 605                 }
 606
 607                 if ( lud->lud_filter == NULL ) {
 608                         ber_dupbv_x( &o.ors_filterstr,
 609                                         &dli->dli_default_filter, op->o_tmpmemctx );
 610
 611                 } else {
 612                         struct berval   flt;
 613                         ber_str2bv( lud->lud_filter, 0, 0, &flt );
 614                         if ( dynlist_make_filter( op, &flt, &o.ors_filterstr ) ) {
 615                                 /* error */
 616                                 goto cleanup;
 617                         }
 618                 }
 619                 o.ors_filter = str2filter_x( op, o.ors_filterstr.bv_val );
 620                 if ( o.ors_filter == NULL ) {
 621                         goto cleanup;
 622                 }
 623
 624                 o.o_bd = select_backend( &o.o_req_ndn, 1 );
 625                 if ( o.o_bd && o.o_bd->be_search ) {
 626 #ifdef SLAP_OPATTRS
 627                         r.sr_attr_flags = slap_attr_flags( o.ors_attrs );
 628 #endif /* SLAP_OPATTRS */
 629                         (void)o.o_bd->be_search( &o, &r );
 630                 }
 631
 632 cleanup:;
 633                 if ( id ) {
 634                         slap_op_groups_free( &o );
 635                 }
 636                 if ( o.ors_filter ) {
 637                         filter_free_x( &o, o.ors_filter, 1 );
 638                 }
 639                 if ( o.ors_attrs && o.ors_attrs != rs->sr_attrs
 640                                 && o.ors_attrs != slap_anlist_no_attrs )
 641                 {
 642                         op->o_tmpfree( o.ors_attrs, op->o_tmpmemctx );
 643                 }
 644                 if ( !BER_BVISNULL( &o.o_req_dn ) ) {
 645                         op->o_tmpfree( o.o_req_dn.bv_val, op->o_tmpmemctx );
 646                 }
 647                 if ( !BER_BVISNULL( &o.o_req_ndn ) ) {
 648                         op->o_tmpfree( o.o_req_ndn.bv_val, op->o_tmpmemctx );
 649                 }
 650                 assert( BER_BVISNULL( &o.ors_filterstr )
 651                         || o.ors_filterstr.bv_val != lud->lud_filter );
 652                 op->o_tmpfree( o.ors_filterstr.bv_val, op->o_tmpmemctx );
 653                 ldap_free_urldesc( lud );
 654         }
 655
 656         rs->sr_entry = e;
 657         rs->sr_flags = e_flags;
 658
 659         return SLAP_CB_CONTINUE;
 660 }
 661
 662 static int
 663 dynlist_sc_save_entry( Operation *op, SlapReply *rs )
 664 {
 665         /* save the entry in the private field of the callback,
 666          * so it doesn't get freed (it's temporary!) */
 667         if ( rs->sr_entry != NULL ) {
 668                 dynlist_sc_t    *dlc = (dynlist_sc_t *)op->o_callback->sc_private;
 669                 dlc->dlc_e = rs->sr_entry;
 670                 rs->sr_entry = NULL;
 671         }
 672
 673         return 0;
 674 }
 675
 676 static int
 677 dynlist_compare( Operation *op, SlapReply *rs )
 678 {
 679         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 680         dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private;
 681         Operation o = *op;
 682         Entry *e = NULL;
 683         dynlist_map_t *dlm;
 684
 685         for ( ; dli != NULL; dli = dli->dli_next ) {
 686                 for ( dlm = dli->dli_dlm; dlm; dlm = dlm->dlm_next )
 687                         if ( op->oq_compare.rs_ava->aa_desc == dlm->dlm_member_ad )
 688                                 break;
 689
 690                 if ( dli->dli_dlm && dlm ) {
 691                         /* This compare is for one of the attributes we're
 692                          * interested in. We'll use slapd's existing dyngroup
 693                          * evaluator to get the answer we want.
 694                          */
 695                         BerVarray id = NULL, authz = NULL;
 696
 697                         o.o_do_not_cache = 1;
 698
 699                         if ( ad_dgIdentity && backend_attribute( &o, NULL, &o.o_req_ndn,
 700                                 ad_dgIdentity, &id, ACL_READ ) == LDAP_SUCCESS )
 701                         {
 702                                 /* if not rootdn and dgAuthz is present,
 703                                  * check if user can be authorized as dgIdentity */
 704                                 if ( ad_dgAuthz && !BER_BVISEMPTY( id ) && !be_isroot( op )
 705                                         && backend_attribute( &o, NULL, &o.o_req_ndn,
 706                                                 ad_dgAuthz, &authz, ACL_READ ) == LDAP_SUCCESS )
 707                                 {
 708
 709                                         rs->sr_err = slap_sasl_matches( op, authz,
 710                                                 &o.o_ndn, &o.o_ndn );
 711                                         ber_bvarray_free_x( authz, op->o_tmpmemctx );
 712                                         if ( rs->sr_err != LDAP_SUCCESS ) {
 713                                                 goto done;
 714                                         }
 715                                 }
 716
 717                                 o.o_dn = *id;
 718                                 o.o_ndn = *id;
 719                                 o.o_groups = NULL; /* authz changed, invalidate cached groups */
 720                         }
 721
 722                         rs->sr_err = backend_group( &o, NULL, &o.o_req_ndn,
 723                                 &o.oq_compare.rs_ava->aa_value, dli->dli_oc, dli->dli_ad );
 724                         switch ( rs->sr_err ) {
 725                         case LDAP_SUCCESS:
 726                                 rs->sr_err = LDAP_COMPARE_TRUE;
 727                                 break;
 728
 729                         case LDAP_NO_SUCH_OBJECT:
 730                                 /* NOTE: backend_group() returns noSuchObject
 731                                  * if op_ndn does not exist; however, since
 732                                  * dynamic list expansion means that the
 733                                  * member attribute is virtually present, the
 734                                  * non-existence of the asserted value implies
 735                                  * the assertion is FALSE rather than
 736                                  * UNDEFINED */
 737                                 rs->sr_err = LDAP_COMPARE_FALSE;
 738                                 break;
 739                         }
 740
 741 done:;
 742                         if ( id ) ber_bvarray_free_x( id, o.o_tmpmemctx );
 743
 744                         return SLAP_CB_CONTINUE;
 745                 }
 746         }
 747
 748         if ( overlay_entry_get_ov( &o, &o.o_req_ndn, NULL, NULL, 0, &e, on ) !=
 749                 LDAP_SUCCESS || e == NULL )
 750         {
 751                 return SLAP_CB_CONTINUE;
 752         }
 753
 754         if ( ad_dgIdentity ) {
 755                 Attribute *id = attrs_find( e->e_attrs, ad_dgIdentity );
 756                 if ( id ) {
 757                         Attribute *authz;
 758
 759                         /* if not rootdn and dgAuthz is present,
 760                          * check if user can be authorized as dgIdentity */
 761                         if ( ad_dgAuthz && !BER_BVISEMPTY( &id->a_nvals[0] ) && !be_isroot( op )
 762                                 && ( authz = attrs_find( e->e_attrs, ad_dgAuthz ) ) )
 763                         {
 764                                 if ( slap_sasl_matches( op, authz->a_nvals,
 765                                         &o.o_ndn, &o.o_ndn ) != LDAP_SUCCESS )
 766                                 {
 767                                         goto release;
 768                                 }
 769                         }
 770
 771                         o.o_dn = id->a_vals[0];
 772                         o.o_ndn = id->a_nvals[0];
 773                         o.o_groups = NULL;
 774                 }
 775         }
 776
 777         dli = (dynlist_info_t *)on->on_bi.bi_private;
 778         for ( ; dli != NULL && rs->sr_err != LDAP_COMPARE_TRUE; dli = dli->dli_next ) {
 779                 Attribute       *a;
 780                 slap_callback   cb;
 781                 SlapReply       r = { REP_SEARCH };
 782                 AttributeName   an[2];
 783                 int             rc;
 784                 dynlist_sc_t    dlc = { 0 };
 785
 786                 if ( !is_entry_objectclass_or_sub( e, dli->dli_oc ))
 787                         continue;
 788
 789                 /* if the entry has the right objectClass, generate
 790                  * the dynamic list and compare */
 791                 dlc.dlc_dli = dli;
 792                 cb.sc_private = &dlc;
 793                 cb.sc_response = dynlist_sc_save_entry;
 794                 cb.sc_cleanup = NULL;
 795                 cb.sc_next = NULL;
 796                 o.o_callback = &cb;
 797
 798                 o.o_tag = LDAP_REQ_SEARCH;
 799                 o.ors_limit = NULL;
 800                 o.ors_tlimit = SLAP_NO_LIMIT;
 801                 o.ors_slimit = SLAP_NO_LIMIT;
 802
 803                 o.o_bd = select_backend( &o.o_req_ndn, 1 );
 804                 if ( !o.o_bd || !o.o_bd->be_search ) {
 805                         goto release;
 806                 }
 807
 808                 o.ors_filterstr = *slap_filterstr_objectClass_pres;
 809                 o.ors_filter = (Filter *) slap_filter_objectClass_pres;
 810
 811                 o.ors_scope = LDAP_SCOPE_BASE;
 812                 o.ors_deref = LDAP_DEREF_NEVER;
 813                 an[0].an_name = op->orc_ava->aa_desc->ad_cname;
 814                 an[0].an_desc = op->orc_ava->aa_desc;
 815                 BER_BVZERO( &an[1].an_name );
 816                 o.ors_attrs = an;
 817                 o.ors_attrsonly = 0;
 818
 819                 o.o_acl_priv = ACL_COMPARE;
 820
 821                 rc = o.o_bd->be_search( &o, &r );
 822
 823                 if ( o.o_dn.bv_val != op->o_dn.bv_val ) {
 824                         slap_op_groups_free( &o );
 825                 }
 826
 827                 if ( rc != 0 ) {
 828                         goto release;
 829                 }
 830
 831                 if ( dlc.dlc_e != NULL ) {
 832                         r.sr_entry = dlc.dlc_e;
 833                 }
 834
 835                 if ( r.sr_err != LDAP_SUCCESS || r.sr_entry == NULL ) {
 836                         /* error? */
 837                         goto release;
 838                 }
 839
 840                 for ( a = attrs_find( r.sr_entry->e_attrs, op->orc_ava->aa_desc );
 841                         a != NULL;
 842                         a = attrs_find( a->a_next, op->orc_ava->aa_desc ) )
 843                 {
 844                         /* if we're here, we got a match... */
 845                         rs->sr_err = LDAP_COMPARE_FALSE;
 846
 847                         if ( attr_valfind( a,
 848                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
 849                                         SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
 850                                 &op->orc_ava->aa_value, NULL, op->o_tmpmemctx ) == 0 )
 851                         {
 852                                 rs->sr_err = LDAP_COMPARE_TRUE;
 853                                 break;
 854                         }
 855                 }
 856
 857                 if ( r.sr_flags & REP_ENTRY_MUSTBEFREED ) {
 858                         entry_free( r.sr_entry );
 859                         r.sr_entry = NULL;
 860                         r.sr_flags ^= REP_ENTRY_MUSTBEFREED;
 861                 }
 862         }
 863
 864 release:;
 865         if ( e != NULL ) {
 866                 overlay_entry_release_ov( op, e, 0, on );
 867         }
 868
 869         return SLAP_CB_CONTINUE;
 870 }
 871
 872 static int
 873 dynlist_response( Operation *op, SlapReply *rs )
 874 {
 875         dynlist_info_t  *dli;
 876
 877         switch ( op->o_tag ) {
 878         case LDAP_REQ_SEARCH:
 879                 if ( rs->sr_type == REP_SEARCH && !get_manageDSAit( op ) )
 880                 {
 881                         int     rc = LDAP_OTHER;
 882
 883                         for ( dli = dynlist_is_dynlist_next( op, rs, NULL );
 884                                 dli;
 885                                 dli = dynlist_is_dynlist_next( op, rs, dli ) )
 886                         {
 887                                 rc = dynlist_prepare_entry( op, rs, dli );
 888                         }
 889
 890                         if ( rc != LDAP_OTHER ) {
 891                                 return rc;
 892                         }
 893                 }
 894                 break;
 895
 896         case LDAP_REQ_COMPARE:
 897                 switch ( rs->sr_err ) {
 898                 /* NOTE: we waste a few cycles running the dynamic list
 899                  * also when the result is FALSE, which occurs if the
 900                  * dynamic entry itself contains the AVA attribute  */
 901                 /* FIXME: this approach is less than optimal; a dedicated
 902                  * compare op should be implemented, that fetches the
 903                  * entry, checks if it has the appropriate objectClass
 904                  * and, in case, runs a compare thru all the URIs,
 905                  * stopping at the first positive occurrence; see ITS#3756 */
 906                 case LDAP_COMPARE_FALSE:
 907                 case LDAP_NO_SUCH_ATTRIBUTE:
 908                         return dynlist_compare( op, rs );
 909                 }
 910                 break;
 911
 912         default:
 913                 break;
 914         }
 915
 916         return SLAP_CB_CONTINUE;
 917 }
 918
 919 static int
 920 dynlist_build_def_filter( dynlist_info_t *dli )
 921 {
 922         char    *ptr;
 923
 924         dli->dli_default_filter.bv_len = STRLENOF( "(!(objectClass=" "))" )
 925                 + dli->dli_oc->soc_cname.bv_len;
 926         dli->dli_default_filter.bv_val = ch_malloc( dli->dli_default_filter.bv_len + 1 );
 927         if ( dli->dli_default_filter.bv_val == NULL ) {
 928                 Debug( LDAP_DEBUG_ANY, "dynlist_db_open: malloc failed.\n",
 929                         0, 0, 0 );
 930                 return -1;
 931         }
 932
 933         ptr = lutil_strcopy( dli->dli_default_filter.bv_val, "(!(objectClass=" );
 934         ptr = lutil_strcopy( ptr, dli->dli_oc->soc_cname.bv_val );
 935         ptr = lutil_strcopy( ptr, "))" );
 936
 937         assert( ptr == &dli->dli_default_filter.bv_val[dli->dli_default_filter.bv_len] );
 938
 939         return 0;
 940 }
 941
 942 #ifdef OL_2_2_COMPAT
 943 static int
 944 dynlist_db_config(
 945         BackendDB       *be,
 946         const char      *fname,
 947         int             lineno,
 948         int             argc,
 949         char            **argv )
 950 {
 951         slap_overinst   *on = (slap_overinst *)be->bd_info;
 952
 953         int             rc = 0;
 954
 955         if ( strcasecmp( argv[0], "dynlist-attrset" ) == 0 ) {
 956                 dynlist_info_t          **dlip;
 957                 ObjectClass             *oc;
 958                 AttributeDescription    *ad = NULL,
 959                                         *member_ad = NULL;
 960                 dynlist_map_t           *dlm = NULL;
 961                 const char              *text;
 962
 963                 if ( argc < 3 ) {
 964                         Debug( LDAP_DEBUG_ANY, "%s: line %d: " DYNLIST_USAGE
 965                                 "invalid arg number #%d.\n",
 966                                 fname, lineno, argc );
 967                         return 1;
 968                 }
 969
 970                 oc = oc_find( argv[1] );
 971                 if ( oc == NULL ) {
 972                         Debug( LDAP_DEBUG_ANY, "%s: line %d: " DYNLIST_USAGE
 973                                 "unable to find ObjectClass \"%s\"\n",
 974                                 fname, lineno, argv[ 1 ] );
 975                         return 1;
 976                 }
 977
 978                 rc = slap_str2ad( argv[2], &ad, &text );
 979                 if ( rc != LDAP_SUCCESS ) {
 980                         Debug( LDAP_DEBUG_ANY, "%s: line %d: " DYNLIST_USAGE
 981                                 "unable to find AttributeDescription \"%s\"\n",
 982                                 fname, lineno, argv[2] );
 983                         return 1;
 984                 }
 985
 986                 if ( !is_at_subtype( ad->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
 987                         Debug( LDAP_DEBUG_ANY, "%s: line %d: " DYNLIST_USAGE
 988                                 "AttributeDescription \"%s\" "
 989                                 "must be a subtype of \"labeledURI\"\n",
 990                                 fname, lineno, argv[2] );
 991                         return 1;
 992                 }
 993
 994                 for ( i = 3; i < argc; i++ ) {
 995                         char *arg;
 996                         char *cp;
 997                         AttributeDescription *member_ad = NULL;
 998                         AttributeDescription *mapped_ad = NULL;
 999                         dynlist_map_t *dlmp;
1000                         dynlist_map_t *dlml;
1001
1002
1003                         /*
1004                          * If no mapped attribute is given, dn is used
1005                          * for backward compatibility.
1006                          */
1007                         arg = argv[i];
1008                         if ( cp = strchr( arg, (int)':' ) != NULL ) {
1009                                 struct berval bv;
1010                                 ber_str2bv( arg, cp - arg, 0, &bv );
1011                                 rc = slap_bv2ad( &bv, &mapped_ad, &text );
1012                                 if ( rc != LDAP_SUCCESS ) {
1013                                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1014                                                 DYNLIST_USAGE
1015                                                 "unable to find mapped AttributeDescription \"%s\"\n",
1016                                                 fname, lineno, arg );
1017                                         return 1;
1018                                 }
1019
1020                                 arg = cp + 1;
1021                         }
1022
1023                         rc = slap_str2ad( arg, &member_ad, &text );
1024                         if ( rc != LDAP_SUCCESS ) {
1025                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1026                                         DYNLIST_USAGE
1027                                         "unable to find AttributeDescription \"%s\"\n",
1028                                         fname, lineno, arg );
1029                                 return 1;
1030                         }
1031
1032                         dlmp = (dynlist_map_t *)ch_calloc( 1, sizeof( dynlist_map_t ) );
1033                         if ( dlm == NULL ) {
1034                                 dlm = dlmp;
1035                                 dlml = NULL;
1036                         }
1037                         dlmp->dlm_member_ad = member_ad;
1038                         dlmp->dlm_mapped_ad = mapped_ad;
1039                         dlmp->dlm_next = NULL;
1040
1041                         if ( dlml != NULL )
1042                                 dlml->dlm_next = dlmp;
1043                         dlml = dlmp;
1044                 }
1045
1046                 for ( dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1047                         *dlip; dlip = &(*dlip)->dli_next )
1048                 {
1049                         /*
1050                          * The same URL attribute / member attribute pair
1051                          * cannot be repeated, but we enforce this only
1052                          * when the member attribute is unique. Performing
1053                          * the check for multiple values would require
1054                          * sorting and comparing the lists, which is left
1055                          * as a future improvement
1056                          */
1057                         if ( (*dlip)->dli_ad == ad &&
1058                              (*dlip)->dli_dlm->dlm_next == NULL &&
1059                              dlm->dlm_next == NULL &&
1060                              dlm->dlm_member_ad == (*dlip)->dli_dlm->dlm_member_ad &&
1061                              dlm->dlm_mapped_ad == (*dlip)->dli_dlm->dlm_mapped_ad ) {
1062                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1063                                         DYNLIST_USAGE
1064                                         "URL attributeDescription \"%s\" already mapped.\n",
1065                                         fname, lineno, ad->ad_cname.bv_val );
1066 #if 0
1067                                 /* make it a warning... */
1068                                 return 1;
1069 #endif
1070                         }
1071                 }
1072
1073                 *dlip = (dynlist_info_t *)ch_calloc( 1, sizeof( dynlist_info_t ) );
1074                 (*dlip)->dli_oc = oc;
1075                 (*dlip)->dli_ad = ad;
1076                 (*dlip)->dli_dlm = dlm;
1077
1078                 if ( dynlist_build_def_filter( *dlip ) ) {
1079                         dynlist_map_t *dlm = (*dlip)->ldi_dlm;
1080                         dynlist_map_t *dlm_next;
1081
1082                         while ( dlm != NULL ) {
1083                                 dlm_next = dlm->dlm_next;
1084                                 ch_free( dlm );
1085                                 dlm = dlm_next;
1086                         }
1087
1088                         ch_free( *dlip );
1089                         *dlip = NULL;
1090                         return 1;
1091                 }
1092
1093         /* allow dyngroup syntax */
1094         } else if ( strcasecmp( argv[0], "dynlist-attrpair" ) == 0 ) {
1095                 dynlist_info_t          **dlip;
1096                 ObjectClass             *oc;
1097                 AttributeDescription    *ad = NULL,
1098                                         *member_ad = NULL;
1099                 const char              *text;
1100
1101                 if ( argc != 3 ) {
1102                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1103                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1104                                 "invalid arg number #%d.\n",
1105                                 fname, lineno, argc );
1106                         return 1;
1107                 }
1108
1109                 oc = oc_find( "groupOfURLs" );
1110                 if ( oc == NULL ) {
1111                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1112                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1113                                 "unable to find default ObjectClass \"groupOfURLs\"\n",
1114                                 fname, lineno, 0 );
1115                         return 1;
1116                 }
1117
1118                 rc = slap_str2ad( argv[1], &member_ad, &text );
1119                 if ( rc != LDAP_SUCCESS ) {
1120                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1121                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1122                                 "unable to find AttributeDescription \"%s\"\n",
1123                                 fname, lineno, argv[1] );
1124                         return 1;
1125                 }
1126
1127                 rc = slap_str2ad( argv[2], &ad, &text );
1128                 if ( rc != LDAP_SUCCESS ) {
1129                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1130                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1131                                 "unable to find AttributeDescription \"%s\"\n",
1132                                 fname, lineno, argv[2] );
1133                         return 1;
1134                 }
1135
1136                 if ( !is_at_subtype( ad->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
1137                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1138                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1139                                 "AttributeDescription \"%s\" "
1140                                 "must be a subtype of \"labeledURI\"\n",
1141                                 fname, lineno, argv[2] );
1142                         return 1;
1143                 }
1144
1145                 for ( dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1146                         *dlip; dlip = &(*dlip)->dli_next )
1147                 {
1148                         /*
1149                          * The same URL attribute / member attribute pair
1150                          * cannot be repeated, but we enforce this only
1151                          * when the member attribute is unique. Performing
1152                          * the check for multiple values would require
1153                          * sorting and comparing the lists, which is left
1154                          * as a future improvement
1155                          */
1156                         if ( (*dlip)->dli_ad == ad &&
1157                              (*dlip)->dli_dlm->dlm_next == NULL &&
1158                              member_ad == (*dlip)->dli_dlm->dlm_member_ad ) {
1159                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1160                                         "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1161                                         "URL attributeDescription \"%s\" already mapped.\n",
1162                                         fname, lineno, ad->ad_cname.bv_val );
1163 #if 0
1164                                 /* make it a warning... */
1165                                 return 1;
1166 #endif
1167                         }
1168                 }
1169
1170                 *dlip = (dynlist_info_t *)ch_calloc( 1, sizeof( dynlist_info_t ) );
1171                 (*dlip)->dli_oc = oc;
1172                 (*dlip)->dli_ad = ad;
1173                 (*dlip)->dli_dlm = (dynlist_map_t *)ch_calloc( 1, sizeof( dynlist_map_t ) );
1174                 (*dlip)->dli_dlm->dlm_member_ad = member_ad;
1175                 (*dlip)->dli_dlm->dlm_mapped_ad = NULL;
1176
1177                 if ( dynlist_build_def_filter( *dlip ) ) {
1178                         ch_free( (*dlip)->dli_dlm );
1179                         ch_free( *dlip );
1180                         *dlip = NULL;
1181                         return 1;
1182                 }
1183
1184         } else {
1185                 rc = SLAP_CONF_UNKNOWN;
1186         }
1187
1188         return rc;
1189 }
1190
1191 #else
1192 enum {
1193         DL_ATTRSET = 1,
1194         DL_ATTRPAIR,
1195         DL_ATTRPAIR_COMPAT,
1196         DL_LAST
1197 };
1198
1199 static ConfigDriver     dl_cfgen;
1200
1201 /* XXXmanu 255 is the maximum arguments we allow. Can we go beyond? */
1202 static ConfigTable dlcfg[] = {
1203         { "dynlist-attrset", "group-oc> [uri] <URL-ad> <[mapped:]member-ad> [...]",
1204                 3, 0, 0, ARG_MAGIC|DL_ATTRSET, dl_cfgen,
1205                 "( OLcfgOvAt:8.1 NAME 'olcDlAttrSet' "
1206                         "DESC 'Dynamic list: <group objectClass>, <URL attributeDescription>, <member attributeDescription>' "
1207                         "EQUALITY caseIgnoreMatch "
1208                         "SYNTAX OMsDirectoryString "
1209                         "X-ORDERED 'VALUES' )",
1210                         NULL, NULL },
1211         { "dynlist-attrpair", "member-ad> <URL-ad",
1212                 3, 3, 0, ARG_MAGIC|DL_ATTRPAIR, dl_cfgen,
1213                         NULL, NULL, NULL },
1214 #ifdef TAKEOVER_DYNGROUP
1215         { "attrpair", "member-ad> <URL-ad",
1216                 3, 3, 0, ARG_MAGIC|DL_ATTRPAIR_COMPAT, dl_cfgen,
1217                         NULL, NULL, NULL },
1218 #endif
1219         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
1220 };
1221
1222 static ConfigOCs dlocs[] = {
1223         { "( OLcfgOvOc:8.1 "
1224                 "NAME 'olcDynamicList' "
1225                 "DESC 'Dynamic list configuration' "
1226                 "SUP olcOverlayConfig "
1227                 "MAY olcDLattrSet )",
1228                 Cft_Overlay, dlcfg, NULL, NULL },
1229         { NULL, 0, NULL }
1230 };
1231
1232 static int
1233 dl_cfgen( ConfigArgs *c )
1234 {
1235         slap_overinst   *on = (slap_overinst *)c->bi;
1236         dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private;
1237
1238         int             rc = 0, i;
1239
1240         if ( c->op == SLAP_CONFIG_EMIT ) {
1241                 switch( c->type ) {
1242                 case DL_ATTRSET:
1243                         for ( i = 0; dli; i++, dli = dli->dli_next ) {
1244                                 struct berval   bv;
1245                                 char            *ptr = c->cr_msg;
1246                                 dynlist_map_t   *dlm;
1247
1248                                 assert( dli->dli_oc != NULL );
1249                                 assert( dli->dli_ad != NULL );
1250
1251                                 /* FIXME: check buffer overflow! */
1252                                 ptr += snprintf( c->cr_msg, sizeof( c->cr_msg ),
1253                                         SLAP_X_ORDERED_FMT "%s", i,
1254                                         dli->dli_oc->soc_cname.bv_val );
1255
1256                                 if ( !BER_BVISNULL( &dli->dli_uri ) ) {
1257                                         *ptr++ = ' ';
1258                                         *ptr++ = '"';
1259                                         ptr = lutil_strncopy( ptr, dli->dli_uri.bv_val,
1260                                                 dli->dli_uri.bv_len );
1261                                         *ptr++ = '"';
1262                                 }
1263
1264                                 *ptr++ = ' ';
1265                                 ptr = lutil_strncopy( ptr, dli->dli_oc->soc_cname.bv_val,
1266                                         dli->dli_oc->soc_cname.bv_len );
1267
1268                                 for ( dlm = dli->dli_dlm; dlm; dlm = dlm->dlm_next ) {
1269                                         ptr[ 0 ] = ' ';
1270                                         ptr++;
1271                                         if ( dlm->dlm_mapped_ad ) {
1272                                                 ptr = lutil_strcopy( ptr, dlm->dlm_mapped_ad->ad_cname.bv_val );
1273                                                 ptr[ 0 ] = ':';
1274                                                 ptr++;
1275                                         }
1276
1277                                         ptr = lutil_strcopy( ptr, dlm->dlm_member_ad->ad_cname.bv_val );
1278                                 }
1279
1280                                 bv.bv_val = c->cr_msg;
1281                                 bv.bv_len = ptr - bv.bv_val;
1282                                 value_add_one( &c->rvalue_vals, &bv );
1283                         }
1284                         break;
1285
1286                 case DL_ATTRPAIR_COMPAT:
1287                 case DL_ATTRPAIR:
1288                         rc = 1;
1289                         break;
1290
1291                 default:
1292                         rc = 1;
1293                         break;
1294                 }
1295
1296                 return rc;
1297
1298         } else if ( c->op == LDAP_MOD_DELETE ) {
1299                 switch( c->type ) {
1300                 case DL_ATTRSET:
1301                         if ( c->valx < 0 ) {
1302                                 dynlist_info_t  *dli_next;
1303
1304                                 for ( dli_next = dli; dli_next; dli = dli_next ) {
1305                                         dynlist_map_t *dlm = dli->dli_dlm;
1306                                         dynlist_map_t *dlm_next;
1307
1308                                         dli_next = dli->dli_next;
1309
1310                                         if ( !BER_BVISNULL( &dli->dli_uri ) ) {
1311                                                 ch_free( dli->dli_uri.bv_val );
1312                                         }
1313
1314                                         if ( dli->dli_lud != NULL ) {
1315                                                 ldap_free_urldesc( dli->dli_lud );
1316                                         }
1317
1318                                         if ( !BER_BVISNULL( &dli->dli_uri_nbase ) ) {
1319                                                 ber_memfree( dli->dli_uri_nbase.bv_val );
1320                                         }
1321
1322                                         if ( dli->dli_uri_filter != NULL ) {
1323                                                 filter_free( dli->dli_uri_filter );
1324                                         }
1325
1326                                         ch_free( dli->dli_default_filter.bv_val );
1327
1328                                         while ( dlm != NULL ) {
1329                                                 dlm_next = dlm->dlm_next;
1330                                                 ch_free( dlm );
1331                                                 dlm = dlm_next;
1332                                         }
1333                                         ch_free( dli );
1334                                 }
1335
1336                                 on->on_bi.bi_private = NULL;
1337
1338                         } else {
1339                                 dynlist_info_t  **dlip;
1340                                 dynlist_map_t *dlm;
1341                                 dynlist_map_t *dlm_next;
1342
1343                                 for ( i = 0, dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1344                                         i < c->valx; i++ )
1345                                 {
1346                                         if ( *dlip == NULL ) {
1347                                                 return 1;
1348                                         }
1349                                         dlip = &(*dlip)->dli_next;
1350                                 }
1351
1352                                 dli = *dlip;
1353                                 *dlip = dli->dli_next;
1354
1355                                 if ( !BER_BVISNULL( &dli->dli_uri ) ) {
1356                                         ch_free( dli->dli_uri.bv_val );
1357                                 }
1358
1359                                 if ( dli->dli_lud != NULL ) {
1360                                         ldap_free_urldesc( dli->dli_lud );
1361                                 }
1362
1363                                 if ( !BER_BVISNULL( &dli->dli_uri_nbase ) ) {
1364                                         ber_memfree( dli->dli_uri_nbase.bv_val );
1365                                 }
1366
1367                                 if ( dli->dli_uri_filter != NULL ) {
1368                                         filter_free( dli->dli_uri_filter );
1369                                 }
1370
1371                                 ch_free( dli->dli_default_filter.bv_val );
1372
1373                                 dlm = dli->dli_dlm;
1374                                 while ( dlm != NULL ) {
1375                                         dlm_next = dlm->dlm_next;
1376                                         ch_free( dlm );
1377                                         dlm = dlm_next;
1378                                 }
1379                                 ch_free( dli );
1380
1381                                 dli = (dynlist_info_t *)on->on_bi.bi_private;
1382                         }
1383                         break;
1384
1385                 case DL_ATTRPAIR_COMPAT:
1386                 case DL_ATTRPAIR:
1387                         rc = 1;
1388                         break;
1389
1390                 default:
1391                         rc = 1;
1392                         break;
1393                 }
1394
1395                 return rc;
1396         }
1397
1398         switch( c->type ) {
1399         case DL_ATTRSET: {
1400                 dynlist_info_t          **dlip,
1401                                         *dli_next = NULL;
1402                 ObjectClass             *oc = NULL;
1403                 AttributeDescription    *ad = NULL;
1404                 int                     attridx = 2;
1405                 LDAPURLDesc             *lud = NULL;
1406                 struct berval           nbase = BER_BVNULL;
1407                 Filter                  *filter = NULL;
1408                 struct berval           uri = BER_BVNULL;
1409                 dynlist_map_t           *dlm = NULL;
1410                 const char              *text;
1411
1412                 oc = oc_find( c->argv[ 1 ] );
1413                 if ( oc == NULL ) {
1414                         snprintf( c->cr_msg, sizeof( c->cr_msg ), DYNLIST_USAGE
1415                                 "unable to find ObjectClass \"%s\"",
1416                                 c->argv[ 1 ] );
1417                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1418                                 c->log, c->cr_msg, 0 );
1419                         return 1;
1420                 }
1421
1422                 if ( strncasecmp( c->argv[ attridx ], "ldap://", STRLENOF("ldap://") ) == 0 ) {
1423                         if ( ldap_url_parse( c->argv[ attridx ], &lud ) != LDAP_URL_SUCCESS ) {
1424                                 snprintf( c->cr_msg, sizeof( c->cr_msg ), DYNLIST_USAGE
1425                                         "unable to parse URI \"%s\"",
1426                                         c->argv[ attridx ] );
1427                                 rc = 1;
1428                                 goto done_uri;
1429                         }
1430
1431                         if ( lud->lud_host != NULL ) {
1432                                 if ( lud->lud_host[0] == '\0' ) {
1433                                         ch_free( lud->lud_host );
1434                                         lud->lud_host = NULL;
1435
1436                                 } else {
1437                                         snprintf( c->cr_msg, sizeof( c->cr_msg ), DYNLIST_USAGE
1438                                                 "host not allowed in URI \"%s\"",
1439                                                 c->argv[ attridx ] );
1440                                         rc = 1;
1441                                         goto done_uri;
1442                                 }
1443                         }
1444
1445                         if ( lud->lud_attrs != NULL ) {
1446                                 snprintf( c->cr_msg, sizeof( c->cr_msg ), DYNLIST_USAGE
1447                                         "attrs not allowed in URI \"%s\"",
1448                                         c->argv[ attridx ] );
1449                                 rc = 1;
1450                                 goto done_uri;
1451                         }
1452
1453                         if ( lud->lud_exts != NULL ) {
1454                                 snprintf( c->cr_msg, sizeof( c->cr_msg ), DYNLIST_USAGE
1455                                         "extensions not allowed in URI \"%s\"",
1456                                         c->argv[ attridx ] );
1457                                 rc = 1;
1458                                 goto done_uri;
1459                         }
1460
1461                         if ( lud->lud_dn != NULL && lud->lud_dn[ 0 ] != '\0' ) {
1462                                 struct berval dn;
1463                                 ber_str2bv( lud->lud_dn, 0, 0, &dn );
1464                                 rc = dnNormalize( 0, NULL, NULL, &dn, &nbase, NULL );
1465                                 if ( rc != LDAP_SUCCESS ) {
1466                                         snprintf( c->cr_msg, sizeof( c->cr_msg ), DYNLIST_USAGE
1467                                                 "DN normalization failed in URI \"%s\"",
1468                                                 c->argv[ attridx ] );
1469                                         goto done_uri;
1470                                 }
1471                         }
1472
1473                         if ( lud->lud_filter != NULL && lud->lud_filter[ 0 ] != '\0' ) {
1474                                 filter = str2filter( lud->lud_filter );
1475                                 if ( filter == NULL ) {
1476                                         snprintf( c->cr_msg, sizeof( c->cr_msg ), DYNLIST_USAGE
1477                                                 "filter parsing failed in URI \"%s\"",
1478                                                 c->argv[ attridx ] );
1479                                         rc = 1;
1480                                         goto done_uri;
1481                                 }
1482                         }
1483
1484                         ber_str2bv( c->argv[ attridx ], 0, 1, &uri );
1485
1486 done_uri:;
1487                         if ( rc ) {
1488                                 if ( lud ) {
1489                                         ldap_free_urldesc( lud );
1490                                 }
1491
1492                                 if ( !BER_BVISNULL( &nbase ) ) {
1493                                         ber_memfree( nbase.bv_val );
1494                                 }
1495
1496                                 if ( filter != NULL ) {
1497                                         filter_free( filter );
1498                                 }
1499
1500                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1501                                         c->log, c->cr_msg, 0 );
1502
1503                                 return rc;
1504                         }
1505
1506                         attridx++;
1507                 }
1508
1509                 rc = slap_str2ad( c->argv[ attridx ], &ad, &text );
1510                 if ( rc != LDAP_SUCCESS ) {
1511                         snprintf( c->cr_msg, sizeof( c->cr_msg ), DYNLIST_USAGE
1512                                 "unable to find AttributeDescription \"%s\"",
1513                                 c->argv[ attridx ] );
1514                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1515                                 c->log, c->cr_msg, 0 );
1516                         return 1;
1517                 }
1518
1519                 if ( !is_at_subtype( ad->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
1520                         snprintf( c->cr_msg, sizeof( c->cr_msg ), DYNLIST_USAGE
1521                                 "AttributeDescription \"%s\" "
1522                                 "must be a subtype of \"labeledURI\"",
1523                                 c->argv[ attridx ] );
1524                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1525                                 c->log, c->cr_msg, 0 );
1526                         return 1;
1527                 }
1528
1529                 attridx++;
1530
1531                 for ( i = attridx; i < c->argc; i++ ) {
1532                         char *arg;
1533                         char *cp;
1534                         AttributeDescription *member_ad = NULL;
1535                         AttributeDescription *mapped_ad = NULL;
1536                         dynlist_map_t *dlmp;
1537                         dynlist_map_t *dlml;
1538
1539
1540                         /*
1541                          * If no mapped attribute is given, dn is used
1542                          * for backward compatibility.
1543                          */
1544                         arg = c->argv[i];
1545                         if ( ( cp = strchr( arg, ':' ) ) != NULL ) {
1546                                 struct berval bv;
1547                                 ber_str2bv( arg, cp - arg, 0, &bv );
1548                                 rc = slap_bv2ad( &bv, &mapped_ad, &text );
1549                                 if ( rc != LDAP_SUCCESS ) {
1550                                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1551                                                 DYNLIST_USAGE
1552                                                 "unable to find mapped AttributeDescription #%d \"%s\"\n",
1553                                                 i - 3, c->argv[ i ] );
1554                                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1555                                                 c->log, c->cr_msg, 0 );
1556                                         return 1;
1557                                 }
1558                                 arg = cp + 1;
1559                         }
1560
1561                         rc = slap_str2ad( arg, &member_ad, &text );
1562                         if ( rc != LDAP_SUCCESS ) {
1563                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1564                                         DYNLIST_USAGE
1565                                         "unable to find AttributeDescription #%d \"%s\"\n",
1566                                         i - 3, c->argv[ i ] );
1567                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1568                                         c->log, c->cr_msg, 0 );
1569                                 return 1;
1570                         }
1571
1572                         dlmp = (dynlist_map_t *)ch_calloc( 1, sizeof( dynlist_map_t ) );
1573                         if ( dlm == NULL ) {
1574                                 dlm = dlmp;
1575                                 dlml = NULL;
1576                         }
1577                         dlmp->dlm_member_ad = member_ad;
1578                         dlmp->dlm_mapped_ad = mapped_ad;
1579                         dlmp->dlm_next = NULL;
1580
1581                         if ( dlml != NULL )
1582                                 dlml->dlm_next = dlmp;
1583                         dlml = dlmp;
1584                 }
1585
1586                 if ( c->valx > 0 ) {
1587                         int     i;
1588
1589                         for ( i = 0, dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1590                                 i < c->valx; i++ )
1591                         {
1592                                 if ( *dlip == NULL ) {
1593                                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1594                                                 DYNLIST_USAGE
1595                                                 "invalid index {%d}\n",
1596                                                 c->valx );
1597                                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1598                                                 c->log, c->cr_msg, 0 );
1599                                         return 1;
1600                                 }
1601                                 dlip = &(*dlip)->dli_next;
1602                         }
1603                         dli_next = *dlip;
1604
1605                 } else {
1606                         for ( dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1607                                 *dlip; dlip = &(*dlip)->dli_next )
1608                                 /* goto last */;
1609                 }
1610
1611                 *dlip = (dynlist_info_t *)ch_calloc( 1, sizeof( dynlist_info_t ) );
1612
1613                 (*dlip)->dli_oc = oc;
1614                 (*dlip)->dli_ad = ad;
1615                 (*dlip)->dli_dlm = dlm;
1616                 (*dlip)->dli_next = dli_next;
1617
1618                 (*dlip)->dli_lud = lud;
1619                 (*dlip)->dli_uri_nbase = nbase;
1620                 (*dlip)->dli_uri_filter = filter;
1621                 (*dlip)->dli_uri = uri;
1622
1623                 rc = dynlist_build_def_filter( *dlip );
1624
1625                 } break;
1626
1627         case DL_ATTRPAIR_COMPAT:
1628                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1629                         "warning: \"attrpair\" only supported for limited "
1630                         "backward compatibility with overlay \"dyngroup\"" );
1631                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
1632                 /* fallthru */
1633
1634         case DL_ATTRPAIR: {
1635                 dynlist_info_t          **dlip;
1636                 ObjectClass             *oc = NULL;
1637                 AttributeDescription    *ad = NULL,
1638                                         *member_ad = NULL;
1639                 const char              *text;
1640
1641                 oc = oc_find( "groupOfURLs" );
1642                 if ( oc == NULL ) {
1643                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1644                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1645                                 "unable to find default ObjectClass \"groupOfURLs\"" );
1646                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1647                                 c->log, c->cr_msg, 0 );
1648                         return 1;
1649                 }
1650
1651                 rc = slap_str2ad( c->argv[ 1 ], &member_ad, &text );
1652                 if ( rc != LDAP_SUCCESS ) {
1653                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1654                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1655                                 "unable to find AttributeDescription \"%s\"",
1656                                 c->argv[ 1 ] );
1657                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1658                                 c->log, c->cr_msg, 0 );
1659                         return 1;
1660                 }
1661
1662                 rc = slap_str2ad( c->argv[ 2 ], &ad, &text );
1663                 if ( rc != LDAP_SUCCESS ) {
1664                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1665                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1666                                 "unable to find AttributeDescription \"%s\"\n",
1667                                 c->argv[ 2 ] );
1668                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1669                                 c->log, c->cr_msg, 0 );
1670                         return 1;
1671                 }
1672
1673                 if ( !is_at_subtype( ad->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
1674                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1675                                 DYNLIST_USAGE
1676                                 "AttributeDescription \"%s\" "
1677                                 "must be a subtype of \"labeledURI\"",
1678                                 c->argv[ 2 ] );
1679                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1680                                 c->log, c->cr_msg, 0 );
1681                         return 1;
1682                 }
1683
1684                 for ( dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1685                         *dlip; dlip = &(*dlip)->dli_next )
1686                 {
1687                         /*
1688                          * The same URL attribute / member attribute pair
1689                          * cannot be repeated, but we enforce this only
1690                          * when the member attribute is unique. Performing
1691                          * the check for multiple values would require
1692                          * sorting and comparing the lists, which is left
1693                          * as a future improvement
1694                          */
1695                         if ( (*dlip)->dli_ad == ad &&
1696                              (*dlip)->dli_dlm->dlm_next == NULL &&
1697                              member_ad == (*dlip)->dli_dlm->dlm_member_ad ) {
1698                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1699                                         "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1700                                         "URL attributeDescription \"%s\" already mapped.\n",
1701                                         ad->ad_cname.bv_val );
1702                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1703                                         c->log, c->cr_msg, 0 );
1704 #if 0
1705                                 /* make it a warning... */
1706                                 return 1;
1707 #endif
1708                         }
1709                 }
1710
1711                 *dlip = (dynlist_info_t *)ch_calloc( 1, sizeof( dynlist_info_t ) );
1712
1713                 (*dlip)->dli_oc = oc;
1714                 (*dlip)->dli_ad = ad;
1715                 (*dlip)->dli_dlm = (dynlist_map_t *)ch_calloc( 1, sizeof( dynlist_map_t ) );
1716                 (*dlip)->dli_dlm->dlm_member_ad = member_ad;
1717                 (*dlip)->dli_dlm->dlm_mapped_ad = NULL;
1718
1719                 rc = dynlist_build_def_filter( *dlip );
1720
1721                 } break;
1722
1723         default:
1724                 rc = 1;
1725                 break;
1726         }
1727
1728         return rc;
1729 }
1730 #endif
1731
1732 static int
1733 dynlist_db_open(
1734         BackendDB       *be,
1735         ConfigReply     *cr )
1736 {
1737         slap_overinst           *on = (slap_overinst *) be->bd_info;
1738         dynlist_info_t          *dli = (dynlist_info_t *)on->on_bi.bi_private;
1739         ObjectClass             *oc = NULL;
1740         AttributeDescription    *ad = NULL;
1741         const char      *text;
1742         int rc;
1743
1744         if ( dli == NULL ) {
1745                 dli = ch_calloc( 1, sizeof( dynlist_info_t ) );
1746                 on->on_bi.bi_private = (void *)dli;
1747         }
1748
1749         for ( ; dli; dli = dli->dli_next ) {
1750                 if ( dli->dli_oc == NULL ) {
1751                         if ( oc == NULL ) {
1752                                 oc = oc_find( "groupOfURLs" );
1753                                 if ( oc == NULL ) {
1754                                         snprintf( cr->msg, sizeof( cr->msg),
1755                                                 "unable to fetch objectClass \"groupOfURLs\"" );
1756                                         Debug( LDAP_DEBUG_ANY, "dynlist_db_open: %s.\n", cr->msg, 0, 0 );
1757                                         return 1;
1758                                 }
1759                         }
1760
1761                         dli->dli_oc = oc;
1762                 }
1763
1764                 if ( dli->dli_ad == NULL ) {
1765                         if ( ad == NULL ) {
1766                                 rc = slap_str2ad( "memberURL", &ad, &text );
1767                                 if ( rc != LDAP_SUCCESS ) {
1768                                         snprintf( cr->msg, sizeof( cr->msg),
1769                                                 "unable to fetch attributeDescription \"memberURL\": %d (%s)",
1770                                                 rc, text );
1771                                         Debug( LDAP_DEBUG_ANY, "dynlist_db_open: %s.\n", cr->msg, 0, 0 );
1772                                         return 1;
1773                                 }
1774                         }
1775
1776                         dli->dli_ad = ad;
1777                 }
1778
1779                 if ( BER_BVISNULL( &dli->dli_default_filter ) ) {
1780                         rc = dynlist_build_def_filter( dli );
1781                         if ( rc != 0 ) {
1782                                 return rc;
1783                         }
1784                 }
1785         }
1786
1787         if ( ad_dgIdentity == NULL ) {
1788                 rc = slap_str2ad( "dgIdentity", &ad_dgIdentity, &text );
1789                 if ( rc != LDAP_SUCCESS ) {
1790                         snprintf( cr->msg, sizeof( cr->msg),
1791                                 "unable to fetch attributeDescription \"dgIdentity\": %d (%s)",
1792                                 rc, text );
1793                         Debug( LDAP_DEBUG_ANY, "dynlist_db_open: %s\n", cr->msg, 0, 0 );
1794                         /* Just a warning */
1795                 }
1796         }
1797
1798         if ( ad_dgAuthz == NULL ) {
1799                 rc = slap_str2ad( "dgAuthz", &ad_dgAuthz, &text );
1800                 if ( rc != LDAP_SUCCESS ) {
1801                         snprintf( cr->msg, sizeof( cr->msg),
1802                                 "unable to fetch attributeDescription \"dgAuthz\": %d (%s)",
1803                                 rc, text );
1804                         Debug( LDAP_DEBUG_ANY, "dynlist_db_open: %s\n", cr->msg, 0, 0 );
1805                         /* Just a warning */
1806                 }
1807         }
1808
1809         return 0;
1810 }
1811
1812 static int
1813 dynlist_db_destroy(
1814         BackendDB       *be,
1815         ConfigReply     *cr )
1816 {
1817         slap_overinst   *on = (slap_overinst *) be->bd_info;
1818
1819         if ( on->on_bi.bi_private ) {
1820                 dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private,
1821                                 *dli_next;
1822
1823                 for ( dli_next = dli; dli_next; dli = dli_next ) {
1824                         dynlist_map_t *dlm;
1825                         dynlist_map_t *dlm_next;
1826
1827                         dli_next = dli->dli_next;
1828
1829                         if ( !BER_BVISNULL( &dli->dli_uri ) ) {
1830                                 ch_free( dli->dli_uri.bv_val );
1831                         }
1832
1833                         if ( dli->dli_lud != NULL ) {
1834                                 ldap_free_urldesc( dli->dli_lud );
1835                         }
1836
1837                         if ( !BER_BVISNULL( &dli->dli_uri_nbase ) ) {
1838                                 ber_memfree( dli->dli_uri_nbase.bv_val );
1839                         }
1840
1841                         if ( dli->dli_uri_filter != NULL ) {
1842                                 filter_free( dli->dli_uri_filter );
1843                         }
1844
1845                         ch_free( dli->dli_default_filter.bv_val );
1846
1847                         dlm = dli->dli_dlm;
1848                         while ( dlm != NULL ) {
1849                                 dlm_next = dlm->dlm_next;
1850                                 ch_free( dlm );
1851                                 dlm = dlm_next;
1852                         }
1853                         ch_free( dli );
1854                 }
1855         }
1856
1857         return 0;
1858 }
1859
1860 static slap_overinst    dynlist = { { NULL } };
1861 #ifdef TAKEOVER_DYNGROUP
1862 static char             *obsolete_names[] = {
1863         "dyngroup",
1864         NULL
1865 };
1866 #endif
1867
1868 #if SLAPD_OVER_DYNLIST == SLAPD_MOD_DYNAMIC
1869 static
1870 #endif /* SLAPD_OVER_DYNLIST == SLAPD_MOD_DYNAMIC */
1871 int
1872 dynlist_initialize(void)
1873 {
1874 #ifndef OL_2_2_COMPAT
1875         int     rc = 0;
1876 #endif
1877
1878         dynlist.on_bi.bi_type = "dynlist";
1879
1880 #ifdef TAKEOVER_DYNGROUP
1881         /* makes dynlist incompatible with dyngroup */
1882         dynlist.on_bi.bi_obsolete_names = obsolete_names;
1883 #endif
1884
1885 #ifdef OL_2_2_COMPAT
1886         dynlist.on_bi.bi_db_config = dynlist_db_config;
1887 #else
1888         dynlist.on_bi.bi_db_config = config_generic_wrapper;
1889 #endif
1890         dynlist.on_bi.bi_db_open = dynlist_db_open;
1891         dynlist.on_bi.bi_db_destroy = dynlist_db_destroy;
1892
1893         dynlist.on_response = dynlist_response;
1894
1895 #ifndef OL_2_2_COMPAT
1896         dynlist.on_bi.bi_cf_ocs = dlocs;
1897
1898         rc = config_register_schema( dlcfg, dlocs );
1899         if ( rc ) {
1900                 return rc;
1901         }
1902 #endif
1903
1904         return overlay_register( &dynlist );
1905 }
1906
1907 #if SLAPD_OVER_DYNLIST == SLAPD_MOD_DYNAMIC
1908 int
1909 init_module( int argc, char *argv[] )
1910 {
1911         return dynlist_initialize();
1912 }
1913 #endif
1914
1915 #endif /* SLAPD_OVER_DYNLIST */