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 2003-2006 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 #define TAKEOVER_DYNGROUP
  28 #elif LDAP_VENDOR_VERSION_MINOR < 3
  29 #define OL_2_2_COMPAT
  30 #endif
  31
  32 #include <stdio.h>
  33
  34 #include <ac/string.h>
  35
  36 #include "slap.h"
  37 #ifndef OL_2_2_COMPAT
  38 #include "config.h"
  39 #endif
  40 #include "lutil.h"
  41
  42 /* FIXME: the code differs if SLAP_OPATTRS is defined or not;
  43  * SLAP_OPATTRS is not defined in 2.2 yet, while this overlay
  44  * expects HEAD code at least later than August 6, 2004. */
  45 /* FIXME: slap_anlist_no_attrs was introduced in 2.3; here it
  46  * is anticipated to allow using this overlay with 2.2. */
  47
  48 #ifdef OL_2_2_COMPAT
  49 static AttributeName anlist_no_attrs[] = {
  50         { BER_BVC( LDAP_NO_ATTRS ), NULL, 0, NULL },
  51         { BER_BVNULL, NULL, 0, NULL }
  52 };
  53
  54 static AttributeName *slap_anlist_no_attrs = anlist_no_attrs;
  55 #endif
  56
  57 typedef struct dynlist_info_t {
  58         ObjectClass             *dli_oc;
  59         AttributeDescription    *dli_ad;
  60         AttributeDescription    *dli_member_ad;
  61         struct berval           dli_default_filter;
  62         struct dynlist_info_t   *dli_next;
  63 } dynlist_info_t;
  64
  65 static dynlist_info_t *
  66 dynlist_is_dynlist( Operation *op, SlapReply *rs )
  67 {
  68         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
  69         dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private;
  70
  71         Attribute       *a;
  72
  73         a = attrs_find( rs->sr_entry->e_attrs, slap_schema.si_ad_objectClass );
  74         if ( a == NULL ) {
  75                 /* FIXME: objectClass must be present; for non-storage
  76                  * backends, like back-ldap, it needs to be added
  77                  * to the requested attributes */
  78                 return NULL;
  79         }
  80
  81         for ( ; dli; dli = dli->dli_next ) {
  82                 if ( value_find_ex( slap_schema.si_ad_objectClass,
  83                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
  84                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
  85                                 a->a_nvals, &dli->dli_oc->soc_cname,
  86                                 op->o_tmpmemctx ) == 0 )
  87                 {
  88                         return dli;
  89                 }
  90         }
  91
  92         return NULL;
  93 }
  94
  95 static int
  96 dynlist_make_filter( Operation *op, struct berval *oldf, struct berval *newf )
  97 {
  98         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
  99         dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private;
 100
 101         char            *ptr;
 102
 103         assert( oldf != NULL );
 104         assert( newf != NULL );
 105         assert( !BER_BVISNULL( oldf ) );
 106         assert( !BER_BVISEMPTY( oldf ) );
 107
 108         newf->bv_len = STRLENOF( "(&(!(objectClass=" "))" ")" )
 109                 + dli->dli_oc->soc_cname.bv_len + oldf->bv_len;
 110         newf->bv_val = op->o_tmpalloc( newf->bv_len + 1, op->o_tmpmemctx );
 111         if ( newf->bv_val == NULL ) {
 112                 return -1;
 113         }
 114         ptr = lutil_strcopy( newf->bv_val, "(&(!(objectClass=" );
 115         ptr = lutil_strcopy( ptr, dli->dli_oc->soc_cname.bv_val );
 116         ptr = lutil_strcopy( ptr, "))" );
 117         ptr = lutil_strcopy( ptr, oldf->bv_val );
 118         ptr = lutil_strcopy( ptr, ")" );
 119         newf->bv_len = ptr - newf->bv_val;
 120
 121         return 0;
 122 }
 123
 124 typedef struct dynlist_sc_t {
 125         dynlist_info_t    *dlc_dli;
 126         Entry           *dlc_e;
 127 } dynlist_sc_t;
 128
 129 static int
 130 dynlist_sc_update( Operation *op, SlapReply *rs )
 131 {
 132         Entry                   *e;
 133         Attribute               *a;
 134         int                     opattrs,
 135                                 userattrs;
 136         AccessControlState      acl_state = ACL_STATE_INIT;
 137
 138         dynlist_sc_t            *dlc;
 139
 140         if ( rs->sr_type != REP_SEARCH ) {
 141                 return 0;
 142         }
 143
 144         dlc = (dynlist_sc_t *)op->o_callback->sc_private;
 145         e = dlc->dlc_e;
 146
 147         assert( e != NULL );
 148         assert( rs->sr_entry != NULL );
 149
 150         /* test access to entry */
 151         if ( !access_allowed( op, rs->sr_entry, slap_schema.si_ad_entry,
 152                                 NULL, ACL_READ, NULL ) )
 153         {
 154                 goto done;
 155         }
 156
 157         if ( dlc->dlc_dli->dli_member_ad ) {
 158
 159                 /* if access allowed, try to add values, emulating permissive
 160                  * control to silently ignore duplicates */
 161                 if ( access_allowed( op, rs->sr_entry, slap_schema.si_ad_entry,
 162                                         NULL, ACL_READ, NULL ) )
 163                 {
 164                         Modification    mod;
 165                         const char      *text = NULL;
 166                         char            textbuf[1024];
 167                         struct berval   vals[ 2 ], nvals[ 2 ];
 168
 169                         vals[ 0 ] = rs->sr_entry->e_name;
 170                         BER_BVZERO( &vals[ 1 ] );
 171                         nvals[ 0 ] = rs->sr_entry->e_nname;
 172                         BER_BVZERO( &nvals[ 1 ] );
 173
 174                         mod.sm_op = LDAP_MOD_ADD;
 175                         mod.sm_desc = dlc->dlc_dli->dli_member_ad;
 176                         mod.sm_type = dlc->dlc_dli->dli_member_ad->ad_cname;
 177                         mod.sm_values = vals;
 178                         mod.sm_nvalues = nvals;
 179
 180                         (void)modify_add_values( e, &mod, /* permissive */ 1,
 181                                         &text, textbuf, sizeof( textbuf ) );
 182                 }
 183
 184                 goto done;
 185         }
 186
 187 #ifndef SLAP_OPATTRS
 188         opattrs = ( rs->sr_attrs == NULL ) ? 0 : an_find( rs->sr_attrs, &AllOper );
 189         userattrs = ( rs->sr_attrs == NULL ) ? 1 : an_find( rs->sr_attrs, &AllUser );
 190 #else /* SLAP_OPATTRS */
 191         opattrs = SLAP_OPATTRS( rs->sr_attr_flags );
 192         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 193 #endif /* SLAP_OPATTRS */
 194
 195         for ( a = rs->sr_entry->e_attrs; a != NULL; a = a->a_next ) {
 196                 BerVarray       vals, nvals = NULL;
 197                 int             i, j;
 198
 199                 /* if attribute is not requested, skip it */
 200                 if ( rs->sr_attrs == NULL ) {
 201                         if ( is_at_operational( a->a_desc->ad_type ) ) {
 202                                 continue;
 203                         }
 204
 205                 } else {
 206                         if ( is_at_operational( a->a_desc->ad_type ) ) {
 207                                 if ( !opattrs && !ad_inlist( a->a_desc, rs->sr_attrs ) )
 208                                 {
 209                                         continue;
 210                                 }
 211
 212                         } else {
 213                                 if ( !userattrs && !ad_inlist( a->a_desc, rs->sr_attrs ) )
 214                                 {
 215                                         continue;
 216                                 }
 217                         }
 218                 }
 219
 220                 /* test access to attribute */
 221                 if ( op->ors_attrsonly ) {
 222                         if ( !access_allowed( op, rs->sr_entry, a->a_desc, NULL,
 223                                                 ACL_READ, &acl_state ) )
 224                         {
 225                                 continue;
 226                         }
 227                 }
 228
 229                 /* single-value check: keep first only */
 230                 if ( is_at_single_value( a->a_desc->ad_type ) ) {
 231                         if ( attr_find( e->e_attrs, a->a_desc ) != NULL ) {
 232                                 continue;
 233                         }
 234                 }
 235
 236                 /* test access to attribute */
 237                 for ( i = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ )
 238                         /* just count */ ;
 239
 240                 vals = op->o_tmpalloc( ( i + 1 ) * sizeof( struct berval ), op->o_tmpmemctx );
 241                 if ( a->a_nvals != a->a_vals ) {
 242                         nvals = op->o_tmpalloc( ( i + 1 ) * sizeof( struct berval ), op->o_tmpmemctx );
 243                 }
 244
 245                 for ( i = 0, j = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ ) {
 246                         if ( access_allowed( op, rs->sr_entry, a->a_desc,
 247                                                 &a->a_nvals[i], ACL_READ, &acl_state ) )
 248                         {
 249                                 vals[j] = a->a_vals[i];
 250                                 if ( nvals ) {
 251                                         nvals[j] = a->a_nvals[i];
 252                                 }
 253                                 j++;
 254                         }
 255                 }
 256
 257                 /* if access allowed, try to add values, emulating permissive
 258                  * control to silently ignore duplicates */
 259                 if ( j != 0 ) {
 260                         Modification    mod;
 261                         const char      *text = NULL;
 262                         char            textbuf[1024];
 263
 264                         BER_BVZERO( &vals[j] );
 265                         if ( nvals ) {
 266                                 BER_BVZERO( &nvals[j] );
 267                         }
 268
 269                         mod.sm_op = LDAP_MOD_ADD;
 270                         mod.sm_desc = a->a_desc;
 271                         mod.sm_type = a->a_desc->ad_cname;
 272                         mod.sm_values = vals;
 273                         mod.sm_nvalues = nvals;
 274
 275                         (void)modify_add_values( e, &mod, /* permissive */ 1,
 276                                         &text, textbuf, sizeof( textbuf ) );
 277                 }
 278
 279                 op->o_tmpfree( vals, op->o_tmpmemctx );
 280                 if ( nvals ) {
 281                         op->o_tmpfree( nvals, op->o_tmpmemctx );
 282                 }
 283         }
 284
 285 done:;
 286         if ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) {
 287                 entry_free( rs->sr_entry );
 288         }
 289
 290         return 0;
 291 }
 292
 293 static int
 294 dynlist_send_entry( Operation *op, SlapReply *rs, dynlist_info_t *dli )
 295 {
 296         Attribute       *a;
 297         slap_callback   cb;
 298         Operation       o = *op;
 299         SlapReply       r = { REP_SEARCH };
 300         struct berval   *url;
 301         Entry           *e;
 302         slap_mask_t     e_flags;
 303         int             opattrs,
 304                         userattrs;
 305         dynlist_sc_t    dlc = { 0 };
 306
 307         a = attrs_find( rs->sr_entry->e_attrs, dli->dli_ad );
 308         if ( a == NULL ) {
 309                 /* FIXME: error? */
 310                 return SLAP_CB_CONTINUE;
 311         }
 312
 313         e = entry_dup( rs->sr_entry );
 314         e_flags = rs->sr_flags | ( REP_ENTRY_MODIFIABLE | REP_ENTRY_MUSTBEFREED );
 315
 316         dlc.dlc_e = e;
 317         dlc.dlc_dli = dli;
 318         cb.sc_private = &dlc;
 319         cb.sc_response = dynlist_sc_update;
 320         cb.sc_cleanup = NULL;
 321         cb.sc_next = NULL;
 322
 323         o.o_callback = &cb;
 324         o.ors_deref = LDAP_DEREF_NEVER;
 325         o.ors_limit = NULL;
 326         o.ors_tlimit = SLAP_NO_LIMIT;
 327         o.ors_slimit = SLAP_NO_LIMIT;
 328
 329 #ifndef SLAP_OPATTRS
 330         opattrs = ( rs->sr_attrs == NULL ) ? 0 : an_find( rs->sr_attrs, &AllOper );
 331         userattrs = ( rs->sr_attrs == NULL ) ? 1 : an_find( rs->sr_attrs, &AllUser );
 332 #else /* SLAP_OPATTRS */
 333         opattrs = SLAP_OPATTRS( rs->sr_attr_flags );
 334         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 335 #endif /* SLAP_OPATTRS */
 336
 337         for ( url = a->a_nvals; !BER_BVISNULL( url ); url++ ) {
 338                 LDAPURLDesc     *lud = NULL;
 339                 int             i, j;
 340                 struct berval   dn;
 341                 int             rc;
 342
 343                 BER_BVZERO( &o.o_req_dn );
 344                 BER_BVZERO( &o.o_req_ndn );
 345                 o.ors_filter = NULL;
 346                 o.ors_attrs = NULL;
 347                 BER_BVZERO( &o.ors_filterstr );
 348
 349                 if ( ldap_url_parse( url->bv_val, &lud ) != LDAP_URL_SUCCESS ) {
 350                         /* FIXME: error? */
 351                         continue;
 352                 }
 353
 354                 if ( lud->lud_host != NULL ) {
 355                         /* FIXME: host not allowed; reject as illegal? */
 356                         Debug( LDAP_DEBUG_ANY, "dynlist_send_entry(\"%s\"): "
 357                                 "illegal URI \"%s\"\n",
 358                                 e->e_name.bv_val, url->bv_val, 0 );
 359                         goto cleanup;
 360                 }
 361
 362                 if ( lud->lud_dn == NULL ) {
 363                         /* note that an empty base is not honored in terms
 364                          * of defaultSearchBase, because select_backend()
 365                          * is not aware of the defaultSearchBase option;
 366                          * this can be useful in case of a database serving
 367                          * the empty suffix */
 368                         BER_BVSTR( &dn, "" );
 369
 370                 } else {
 371                         ber_str2bv( lud->lud_dn, 0, 0, &dn );
 372                 }
 373                 rc = dnPrettyNormal( NULL, &dn, &o.o_req_dn, &o.o_req_ndn, op->o_tmpmemctx );
 374                 if ( rc != LDAP_SUCCESS ) {
 375                         /* FIXME: error? */
 376                         goto cleanup;
 377                 }
 378                 o.ors_scope = lud->lud_scope;
 379
 380                 if ( dli->dli_member_ad != NULL ) {
 381                         /* if ( lud->lud_attrs != NULL ),
 382                          * the URL should be ignored */
 383                         o.ors_attrs = slap_anlist_no_attrs;
 384
 385                 } else if ( lud->lud_attrs == NULL ) {
 386                         o.ors_attrs = rs->sr_attrs;
 387
 388                 } else {
 389                         for ( i = 0; lud->lud_attrs[i]; i++)
 390                                 /* just count */ ;
 391
 392                         o.ors_attrs = op->o_tmpcalloc( i + 1, sizeof( AttributeName ), op->o_tmpmemctx );
 393                         for ( i = 0, j = 0; lud->lud_attrs[i]; i++) {
 394                                 const char      *text = NULL;
 395
 396                                 ber_str2bv( lud->lud_attrs[i], 0, 0, &o.ors_attrs[j].an_name );
 397                                 o.ors_attrs[j].an_desc = NULL;
 398                                 (void)slap_bv2ad( &o.ors_attrs[j].an_name, &o.ors_attrs[j].an_desc, &text );
 399                                 /* FIXME: ignore errors... */
 400
 401                                 if ( rs->sr_attrs == NULL ) {
 402                                         if ( o.ors_attrs[j].an_desc != NULL &&
 403                                                         is_at_operational( o.ors_attrs[j].an_desc->ad_type ) )
 404                                         {
 405                                                 continue;
 406                                         }
 407
 408                                 } else {
 409                                         if ( o.ors_attrs[j].an_desc != NULL &&
 410                                                         is_at_operational( o.ors_attrs[j].an_desc->ad_type ) )
 411                                         {
 412                                                 if ( !opattrs && !ad_inlist( o.ors_attrs[j].an_desc, rs->sr_attrs ) )
 413                                                 {
 414                                                         continue;
 415                                                 }
 416
 417                                         } else {
 418                                                 if ( !userattrs &&
 419                                                                 o.ors_attrs[j].an_desc != NULL &&
 420                                                                 !ad_inlist( o.ors_attrs[j].an_desc, rs->sr_attrs ) )
 421                                                 {
 422                                                         continue;
 423                                                 }
 424                                         }
 425                                 }
 426
 427                                 j++;
 428                         }
 429
 430                         if ( j == 0 ) {
 431                                 goto cleanup;
 432                         }
 433
 434                         BER_BVZERO( &o.ors_attrs[j].an_name );
 435                 }
 436
 437                 if ( lud->lud_filter == NULL ) {
 438                         ber_dupbv_x( &o.ors_filterstr,
 439                                         &dli->dli_default_filter, op->o_tmpmemctx );
 440
 441                 } else {
 442                         struct berval   flt;
 443                         ber_str2bv( lud->lud_filter, 0, 0, &flt );
 444                         if ( dynlist_make_filter( op, &flt, &o.ors_filterstr ) ) {
 445                                 /* error */
 446                                 goto cleanup;
 447                         }
 448                 }
 449                 o.ors_filter = str2filter_x( op, o.ors_filterstr.bv_val );
 450                 if ( o.ors_filter == NULL ) {
 451                         goto cleanup;
 452                 }
 453
 454                 o.o_bd = select_backend( &o.o_req_ndn, 0, 1 );
 455                 if ( o.o_bd && o.o_bd->be_search ) {
 456 #ifdef SLAP_OPATTRS
 457                         r.sr_attr_flags = slap_attr_flags( o.ors_attrs );
 458 #endif /* SLAP_OPATTRS */
 459                         (void)o.o_bd->be_search( &o, &r );
 460                 }
 461
 462 cleanup:;
 463                 if ( o.ors_filter ) {
 464                         filter_free_x( &o, o.ors_filter );
 465                 }
 466                 if ( o.ors_attrs && o.ors_attrs != rs->sr_attrs
 467                                 && o.ors_attrs != slap_anlist_no_attrs )
 468                 {
 469                         op->o_tmpfree( o.ors_attrs, op->o_tmpmemctx );
 470                 }
 471                 if ( !BER_BVISNULL( &o.o_req_dn ) ) {
 472                         op->o_tmpfree( o.o_req_dn.bv_val, op->o_tmpmemctx );
 473                 }
 474                 if ( !BER_BVISNULL( &o.o_req_ndn ) ) {
 475                         op->o_tmpfree( o.o_req_ndn.bv_val, op->o_tmpmemctx );
 476                 }
 477                 assert( o.ors_filterstr.bv_val != lud->lud_filter );
 478                 op->o_tmpfree( o.ors_filterstr.bv_val, op->o_tmpmemctx );
 479                 ldap_free_urldesc( lud );
 480         }
 481
 482         rs->sr_entry = e;
 483         rs->sr_flags = e_flags;
 484
 485         return SLAP_CB_CONTINUE;
 486 }
 487
 488 static int
 489 dynlist_sc_save_entry( Operation *op, SlapReply *rs )
 490 {
 491         /* save the entry in the private field of the callback,
 492          * so it doesn't get freed (it's temporary!) */
 493         if ( rs->sr_entry != NULL ) {
 494                 dynlist_sc_t    *dlc = (dynlist_sc_t *)op->o_callback->sc_private;
 495                 dlc->dlc_e = rs->sr_entry;
 496                 rs->sr_entry = NULL;
 497         }
 498
 499         return 0;
 500 }
 501
 502 static int
 503 dynlist_compare( Operation *op, SlapReply *rs )
 504 {
 505         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 506         dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private;
 507
 508         for ( ; dli != NULL; dli = dli->dli_next ) {
 509                 if ( op->oq_compare.rs_ava->aa_desc == dli->dli_member_ad ) {
 510                         /* This compare is for one of the attributes we're
 511                          * interested in. We'll use slapd's existing dyngroup
 512                          * evaluator to get the answer we want.
 513                          */
 514                         int cache = op->o_do_not_cache;
 515
 516                         op->o_do_not_cache = 1;
 517                         rs->sr_err = backend_group( op, NULL, &op->o_req_ndn,
 518                                 &op->oq_compare.rs_ava->aa_value, dli->dli_oc, dli->dli_ad );
 519                         op->o_do_not_cache = cache;
 520                         switch ( rs->sr_err ) {
 521                         case LDAP_SUCCESS:
 522                                 rs->sr_err = LDAP_COMPARE_TRUE;
 523                                 break;
 524
 525                         case LDAP_NO_SUCH_OBJECT:
 526                                 /* NOTE: backend_group() returns noSuchObject
 527                                  * if op_ndn does not exist; however, since
 528                                  * dynamic list expansion means that the
 529                                  * member attribute is virtually present, the
 530                                  * non-existence of the asserted value implies
 531                                  * the assertion is FALSE rather than
 532                                  * UNDEFINED */
 533                                 rs->sr_err = LDAP_COMPARE_FALSE;
 534                                 break;
 535                         }
 536
 537                         return SLAP_CB_CONTINUE;
 538                 }
 539         }
 540
 541         dli = (dynlist_info_t *)on->on_bi.bi_private;
 542         for ( ; dli != NULL && rs->sr_err != LDAP_COMPARE_TRUE; dli = dli->dli_next ) {
 543                 Attribute       *a;
 544                 slap_callback   cb;
 545                 Operation       o = *op;
 546                 SlapReply       r = { REP_SEARCH };
 547                 AttributeName   an[2];
 548                 int             rc;
 549                 dynlist_sc_t    dlc = { 0 };
 550                 Entry           *e;
 551
 552                 int cache = op->o_do_not_cache;
 553                 struct berval   op_dn = op->o_dn,
 554                                 op_ndn = op->o_ndn;
 555                 BackendDB       *op_bd = op->o_bd;
 556
 557                 /* fetch the entry as rootdn (a hack to see if it exists
 558                  * and if it has the right objectClass) */
 559                 op->o_do_not_cache = 1;
 560                 op->o_dn = op->o_bd->be_rootdn;
 561                 op->o_ndn = op->o_bd->be_rootndn;
 562                 op->o_bd = select_backend( &op->o_req_ndn, 0, 0 );
 563
 564                 r.sr_err = be_entry_get_rw( op, &op->o_req_ndn,
 565                         dli->dli_oc, NULL, 0, &e );
 566                 if ( e != NULL ) {
 567                         be_entry_release_r( op, e );
 568                 }
 569                 op->o_do_not_cache = cache;
 570                 op->o_dn = op_dn;
 571                 op->o_ndn = op_ndn;
 572                 op->o_bd = op_bd;
 573                 if ( r.sr_err != LDAP_SUCCESS ) {
 574                         continue;
 575                 }
 576
 577                 /* if the entry has the right objectClass, generate
 578                  * the dynamic list and compare */
 579                 dlc.dlc_dli = dli;
 580                 cb.sc_private = &dlc;
 581                 cb.sc_response = dynlist_sc_save_entry;
 582                 cb.sc_cleanup = NULL;
 583                 cb.sc_next = NULL;
 584                 o.o_callback = &cb;
 585
 586                 o.o_tag = LDAP_REQ_SEARCH;
 587                 o.ors_limit = NULL;
 588                 o.ors_tlimit = SLAP_NO_LIMIT;
 589                 o.ors_slimit = SLAP_NO_LIMIT;
 590
 591                 o.o_bd = select_backend( &o.o_req_ndn, 0, 1 );
 592                 if ( !o.o_bd || !o.o_bd->be_search ) {
 593                         return SLAP_CB_CONTINUE;
 594                 }
 595
 596                 BER_BVSTR( &o.ors_filterstr, "(objectClass=*)" );
 597                 o.ors_filter = str2filter_x( op, o.ors_filterstr.bv_val );
 598                 if ( o.ors_filter == NULL ) {
 599                         /* FIXME: error? */
 600                         return SLAP_CB_CONTINUE;
 601                 }
 602
 603                 o.ors_scope = LDAP_SCOPE_BASE;
 604                 o.ors_deref = LDAP_DEREF_NEVER;
 605                 an[0].an_name = op->orc_ava->aa_desc->ad_cname;
 606                 an[0].an_desc = op->orc_ava->aa_desc;
 607                 BER_BVZERO( &an[1].an_name );
 608                 o.ors_attrs = an;
 609                 o.ors_attrsonly = 0;
 610
 611                 rc = o.o_bd->be_search( &o, &r );
 612                 filter_free_x( &o, o.ors_filter );
 613
 614                 if ( rc != 0 ) {
 615                         return rc;
 616                 }
 617
 618                 if ( dlc.dlc_e != NULL ) {
 619                         r.sr_entry = dlc.dlc_e;
 620                 }
 621
 622                 if ( r.sr_err != LDAP_SUCCESS || r.sr_entry == NULL ) {
 623                         /* error? */
 624                         return SLAP_CB_CONTINUE;
 625                 }
 626
 627                 for ( a = attrs_find( r.sr_entry->e_attrs, op->orc_ava->aa_desc );
 628                         a != NULL;
 629                         a = attrs_find( a->a_next, op->orc_ava->aa_desc ) )
 630                 {
 631                         /* if we're here, we got a match... */
 632                         rs->sr_err = LDAP_COMPARE_FALSE;
 633
 634                         if ( value_find_ex( op->orc_ava->aa_desc,
 635                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
 636                                         SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
 637                                 a->a_nvals, &op->orc_ava->aa_value, op->o_tmpmemctx ) == 0 )
 638                         {
 639                                 rs->sr_err = LDAP_COMPARE_TRUE;
 640                                 break;
 641                         }
 642                 }
 643
 644                 if ( r.sr_flags & REP_ENTRY_MUSTBEFREED ) {
 645                         entry_free( r.sr_entry );
 646                 }
 647         }
 648
 649         return SLAP_CB_CONTINUE;
 650 }
 651
 652 static int
 653 dynlist_response( Operation *op, SlapReply *rs )
 654 {
 655         dynlist_info_t  *dli;
 656
 657         switch ( op->o_tag ) {
 658         case LDAP_REQ_SEARCH:
 659                 if ( rs->sr_type == REP_SEARCH && !get_manageDSAit( op ) )
 660                 {
 661                         dli = dynlist_is_dynlist( op, rs );
 662                         if ( dli != NULL ) {
 663                                 return dynlist_send_entry( op, rs, dli );
 664                         }
 665                 }
 666                 break;
 667
 668         case LDAP_REQ_COMPARE:
 669                 switch ( rs->sr_err ) {
 670                 /* NOTE: we waste a few cycles running the dynamic list
 671                  * also when the result is FALSE, which occurs if the
 672                  * dynamic entry itself contains the AVA attribute  */
 673                 /* FIXME: this approach is less than optimal; a dedicated
 674                  * compare op should be implemented, that fetches the
 675                  * entry, checks if it has the appropriate objectClass
 676                  * and, in case, runs a compare thru all the URIs,
 677                  * stopping at the first positive occurrence; see ITS#3756 */
 678                 case LDAP_COMPARE_FALSE:
 679                 case LDAP_NO_SUCH_ATTRIBUTE:
 680                         return dynlist_compare( op, rs );
 681                 }
 682                 break;
 683
 684         default:
 685                 break;
 686         }
 687
 688         return SLAP_CB_CONTINUE;
 689 }
 690
 691 static int
 692 dynlist_build_def_filter( dynlist_info_t *dli )
 693 {
 694         char    *ptr;
 695
 696         dli->dli_default_filter.bv_len = STRLENOF( "(!(objectClass=" "))" )
 697                 + dli->dli_oc->soc_cname.bv_len;
 698         dli->dli_default_filter.bv_val = ch_malloc( dli->dli_default_filter.bv_len + 1 );
 699         if ( dli->dli_default_filter.bv_val == NULL ) {
 700                 Debug( LDAP_DEBUG_ANY, "dynlist_db_open: malloc failed.\n",
 701                         0, 0, 0 );
 702                 return -1;
 703         }
 704
 705         ptr = lutil_strcopy( dli->dli_default_filter.bv_val, "(!(objectClass=" );
 706         ptr = lutil_strcopy( ptr, dli->dli_oc->soc_cname.bv_val );
 707         ptr = lutil_strcopy( ptr, "))" );
 708
 709         assert( dli->dli_default_filter.bv_len == ptr - dli->dli_default_filter.bv_val );
 710
 711         return 0;
 712 }
 713
 714 #ifdef OL_2_2_COMPAT
 715 static int
 716 dynlist_db_config(
 717         BackendDB       *be,
 718         const char      *fname,
 719         int             lineno,
 720         int             argc,
 721         char            **argv )
 722 {
 723         slap_overinst   *on = (slap_overinst *)be->bd_info;
 724
 725         int             rc = 0;
 726
 727         if ( strcasecmp( argv[0], "dynlist-attrset" ) == 0 ) {
 728                 dynlist_info_t          **dlip;
 729                 ObjectClass             *oc;
 730                 AttributeDescription    *ad = NULL,
 731                                         *member_ad = NULL;
 732                 const char              *text;
 733
 734                 if ( argc < 3 || argc > 4 ) {
 735                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 736                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 737                                 "invalid arg number #%d.\n",
 738                                 fname, lineno, argc );
 739                         return 1;
 740                 }
 741
 742                 oc = oc_find( argv[1] );
 743                 if ( oc == NULL ) {
 744                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 745                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 746                                 "unable to find ObjectClass \"%s\"\n",
 747                                 fname, lineno, argv[ 1 ] );
 748                         return 1;
 749                 }
 750
 751                 rc = slap_str2ad( argv[2], &ad, &text );
 752                 if ( rc != LDAP_SUCCESS ) {
 753                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 754                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 755                                 "unable to find AttributeDescription \"%s\"\n",
 756                                 fname, lineno, argv[2] );
 757                         return 1;
 758                 }
 759
 760                 if ( !is_at_subtype( ad->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
 761                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 762                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 763                                 "AttributeDescription \"%s\" "
 764                                 "must be a subtype of \"labeledURI\"\n",
 765                                 fname, lineno, argv[2] );
 766                         return 1;
 767                 }
 768
 769                 if ( argc == 4 ) {
 770                         rc = slap_str2ad( argv[3], &member_ad, &text );
 771                         if ( rc != LDAP_SUCCESS ) {
 772                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 773                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 774                                         "unable to find AttributeDescription \"%s\"\n",
 775                                         fname, lineno, argv[3] );
 776                                 return 1;
 777                         }
 778                 }
 779
 780                 for ( dlip = (dynlist_info_t **)&on->on_bi.bi_private;
 781                         *dlip; dlip = &(*dlip)->dli_next )
 782                 {
 783                         /* The check on objectClass may be relaxed */
 784 #if 0
 785                         if ( (*dlip)->dli_oc == oc ) {
 786                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 787                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 788                                         "objectClass \"%s\" already mapped.\n",
 789                                         fname, lineno, oc->soc_cname.bv_val );
 790                                 return 1;
 791                         }
 792 #endif
 793
 794                         if ( (*dlip)->dli_ad == ad ) {
 795                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 796                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 797                                         "URL attributeDescription \"%s\" already mapped.\n",
 798                                         fname, lineno, ad->ad_cname.bv_val );
 799                                 return 1;
 800                         }
 801
 802                         if ( member_ad != NULL && (*dlip)->dli_member_ad == member_ad ) {
 803                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 804                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 805                                         "member attributeDescription \"%s\" already mapped.\n",
 806                                         fname, lineno, member_ad->ad_cname.bv_val );
 807                                 return 1;
 808                         }
 809                 }
 810
 811                 *dlip = (dynlist_info_t *)ch_calloc( 1, sizeof( dynlist_info_t ) );
 812                 (*dlip)->dli_oc = oc;
 813                 (*dlip)->dli_ad = ad;
 814                 (*dlip)->dli_member_ad = member_ad;
 815
 816                 if ( dynlist_build_def_filter( *dlip ) ) {
 817                         ch_free( *dlip );
 818                         *dlip = NULL;
 819                         return 1;
 820                 }
 821
 822         /* allow dyngroup syntax */
 823         } else if ( strcasecmp( argv[0], "dynlist-attrpair" ) == 0 ) {
 824                 dynlist_info_t          **dlip;
 825                 ObjectClass             *oc;
 826                 AttributeDescription    *ad = NULL,
 827                                         *member_ad = NULL;
 828                 const char              *text;
 829
 830                 if ( argc != 3 ) {
 831                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 832                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 833                                 "invalid arg number #%d.\n",
 834                                 fname, lineno, argc );
 835                         return 1;
 836                 }
 837
 838                 oc = oc_find( "groupOfURLs" );
 839                 if ( oc == NULL ) {
 840                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 841                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 842                                 "unable to find default ObjectClass \"groupOfURLs\"\n",
 843                                 fname, lineno, 0 );
 844                         return 1;
 845                 }
 846
 847                 rc = slap_str2ad( argv[1], &member_ad, &text );
 848                 if ( rc != LDAP_SUCCESS ) {
 849                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 850                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 851                                 "unable to find AttributeDescription \"%s\"\n",
 852                                 fname, lineno, argv[1] );
 853                         return 1;
 854                 }
 855
 856                 rc = slap_str2ad( argv[2], &ad, &text );
 857                 if ( rc != LDAP_SUCCESS ) {
 858                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 859                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 860                                 "unable to find AttributeDescription \"%s\"\n",
 861                                 fname, lineno, argv[2] );
 862                         return 1;
 863                 }
 864
 865                 if ( !is_at_subtype( ad->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
 866                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 867                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 868                                 "AttributeDescription \"%s\" "
 869                                 "must be a subtype of \"labeledURI\"\n",
 870                                 fname, lineno, argv[2] );
 871                         return 1;
 872                 }
 873
 874
 875                 for ( dlip = (dynlist_info_t **)&on->on_bi.bi_private;
 876                         *dlip; dlip = &(*dlip)->dli_next )
 877                 {
 878 #if 0
 879                         /* The check on objectClass may be relaxed */
 880                         if ( (*dlip)->dli_oc == oc ) {
 881                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 882                                         "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 883                                         "objectClass \"%s\" already mapped.\n",
 884                                         fname, lineno, oc->soc_cname.bv_val );
 885                                 return 1;
 886                         }
 887 #endif
 888
 889                         if ( (*dlip)->dli_ad == ad ) {
 890                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 891                                         "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 892                                         "URL attributeDescription \"%s\" already mapped.\n",
 893                                         fname, lineno, ad->ad_cname.bv_val );
 894                                 return 1;
 895                         }
 896
 897                         if ( member_ad != NULL && (*dlip)->dli_member_ad == member_ad ) {
 898                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 899                                         "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 900                                         "member attributeDescription \"%s\" already mapped.\n",
 901                                         fname, lineno, member_ad->ad_cname.bv_val );
 902                                 return 1;
 903                         }
 904                 }
 905
 906                 *dlip = (dynlist_info_t *)ch_calloc( 1, sizeof( dynlist_info_t ) );
 907                 (*dlip)->dli_oc = oc;
 908                 (*dlip)->dli_ad = ad;
 909                 (*dlip)->dli_member_ad = member_ad;
 910
 911                 if ( dynlist_build_def_filter( *dlip ) ) {
 912                         ch_free( *dlip );
 913                         *dlip = NULL;
 914                         return 1;
 915                 }
 916
 917         } else {
 918                 rc = SLAP_CONF_UNKNOWN;
 919         }
 920
 921         return rc;
 922 }
 923
 924 #else
 925 enum {
 926         DL_ATTRSET = 1,
 927         DL_ATTRPAIR,
 928         DL_ATTRPAIR_COMPAT,
 929         DL_LAST
 930 };
 931
 932 static ConfigDriver     dl_cfgen;
 933
 934 static ConfigTable dlcfg[] = {
 935         { "dynlist-attrset", "group-oc> <URL-ad> <member-ad",
 936                 3, 4, 0, ARG_MAGIC|DL_ATTRSET, dl_cfgen,
 937                 "( OLcfgOvAt:8.1 NAME 'olcDLattrSet' "
 938                         "DESC 'Dynamic list: <group objectClass>, <URL attributeDescription>, <member attributeDescription>' "
 939                         "EQUALITY caseIgnoreMatch "
 940                         "SYNTAX OMsDirectoryString "
 941                         "X-ORDERED 'VALUES' )",
 942                         NULL, NULL },
 943         { "dynlist-attrpair", "member-ad> <URL-ad",
 944                 3, 3, 0, ARG_MAGIC|DL_ATTRPAIR, dl_cfgen,
 945                         NULL, NULL, NULL },
 946 #ifdef TAKEOVER_DYNGROUP
 947         { "attrpair", "member-ad> <URL-ad",
 948                 3, 3, 0, ARG_MAGIC|DL_ATTRPAIR_COMPAT, dl_cfgen,
 949                         NULL, NULL, NULL },
 950 #endif
 951         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
 952 };
 953
 954 static ConfigOCs dlocs[] = {
 955         { "( OLcfgOvOc:8.1 "
 956                 "NAME 'olcDynamicList' "
 957                 "DESC 'Dynamic list configuration' "
 958                 "SUP olcOverlayConfig "
 959                 "MAY olcDLattrSet )",
 960                 Cft_Overlay, dlcfg, NULL, NULL },
 961         { NULL, 0, NULL }
 962 };
 963
 964 static int
 965 dl_cfgen( ConfigArgs *c )
 966 {
 967         slap_overinst   *on = (slap_overinst *)c->bi;
 968         dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private;
 969
 970         int             rc = 0, i;
 971
 972         if ( c->op == SLAP_CONFIG_EMIT ) {
 973                 switch( c->type ) {
 974                 case DL_ATTRSET:
 975                         for ( i = 0; dli; i++, dli = dli->dli_next ) {
 976                                 struct berval   bv;
 977                                 char            *ptr = c->msg;
 978
 979                                 assert( dli->dli_oc != NULL );
 980                                 assert( dli->dli_ad != NULL );
 981
 982                                 ptr += snprintf( c->msg, sizeof( c->msg ),
 983                                         SLAP_X_ORDERED_FMT "%s %s", i,
 984                                         dli->dli_oc->soc_cname.bv_val,
 985                                         dli->dli_ad->ad_cname.bv_val );
 986
 987                                 if ( dli->dli_member_ad != NULL ) {
 988                                         ptr[ 0 ] = ' ';
 989                                         ptr++;
 990                                         ptr = lutil_strcopy( ptr, dli->dli_member_ad->ad_cname.bv_val );
 991                                 }
 992
 993                                 bv.bv_val = c->msg;
 994                                 bv.bv_len = ptr - bv.bv_val;
 995                                 value_add_one( &c->rvalue_vals, &bv );
 996                         }
 997                         break;
 998
 999                 case DL_ATTRPAIR_COMPAT:
1000                 case DL_ATTRPAIR:
1001                         rc = 1;
1002                         break;
1003
1004                 default:
1005                         rc = 1;
1006                         break;
1007                 }
1008
1009                 return rc;
1010
1011         } else if ( c->op == LDAP_MOD_DELETE ) {
1012                 switch( c->type ) {
1013                 case DL_ATTRSET:
1014                         if ( c->valx < 0 ) {
1015                                 dynlist_info_t  *dli_next;
1016
1017                                 for ( dli_next = dli; dli_next; dli = dli_next ) {
1018                                         dli_next = dli->dli_next;
1019
1020                                         ch_free( dli->dli_default_filter.bv_val );
1021                                         ch_free( dli );
1022                                 }
1023
1024                                 on->on_bi.bi_private = NULL;
1025
1026                         } else {
1027                                 dynlist_info_t  **dlip;
1028
1029                                 for ( i = 0, dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1030                                         i < c->valx; i++ )
1031                                 {
1032                                         if ( *dlip == NULL ) {
1033                                                 return 1;
1034                                         }
1035                                         dlip = &(*dlip)->dli_next;
1036                                 }
1037
1038                                 dli = *dlip;
1039                                 *dlip = dli->dli_next;
1040                                 ch_free( dli->dli_default_filter.bv_val );
1041                                 ch_free( dli );
1042
1043                                 dli = (dynlist_info_t *)on->on_bi.bi_private;
1044                         }
1045                         break;
1046
1047                 case DL_ATTRPAIR_COMPAT:
1048                 case DL_ATTRPAIR:
1049                         rc = 1;
1050                         break;
1051
1052                 default:
1053                         rc = 1;
1054                         break;
1055                 }
1056
1057                 return 1;       /* FIXME */
1058         }
1059
1060         switch( c->type ) {
1061         case DL_ATTRSET: {
1062                 dynlist_info_t          **dlip,
1063                                         *dli_next = NULL;
1064                 ObjectClass             *oc = NULL;
1065                 AttributeDescription    *ad = NULL,
1066                                         *member_ad = NULL;
1067                 const char              *text;
1068
1069                 oc = oc_find( c->argv[ 1 ] );
1070                 if ( oc == NULL ) {
1071                         snprintf( c->msg, sizeof( c->msg ),
1072                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1073                                 "unable to find ObjectClass \"%s\"",
1074                                 c->argv[ 1 ] );
1075                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1076                                 c->log, c->msg, 0 );
1077                         return 1;
1078                 }
1079
1080                 rc = slap_str2ad( c->argv[ 2 ], &ad, &text );
1081                 if ( rc != LDAP_SUCCESS ) {
1082                         snprintf( c->msg, sizeof( c->msg ),
1083                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1084                                 "unable to find AttributeDescription \"%s\"",
1085                                 c->argv[ 2 ] );
1086                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1087                                 c->log, c->msg, 0 );
1088                         return 1;
1089                 }
1090
1091                 if ( !is_at_subtype( ad->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
1092                         snprintf( c->msg, sizeof( c->msg ),
1093                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1094                                 "AttributeDescription \"%s\" "
1095                                 "must be a subtype of \"labeledURI\"",
1096                                 c->argv[ 2 ] );
1097                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1098                                 c->log, c->msg, 0 );
1099                         return 1;
1100                 }
1101
1102                 if ( c->argc == 4 ) {
1103                         rc = slap_str2ad( c->argv[ 3 ], &member_ad, &text );
1104                         if ( rc != LDAP_SUCCESS ) {
1105                                 snprintf( c->msg, sizeof( c->msg ),
1106                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1107                                         "unable to find AttributeDescription \"%s\"\n",
1108                                         c->argv[ 3 ] );
1109                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1110                                         c->log, c->msg, 0 );
1111                                 return 1;
1112                         }
1113                 }
1114
1115                 for ( dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1116                         *dlip; dlip = &(*dlip)->dli_next )
1117                 {
1118                         /* The check on objectClass may be relaxed */
1119 #if 0
1120                         if ( (*dlip)->dli_oc == oc ) {
1121                                 snprintf( c->msg, sizeof( c->msg ),
1122                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1123                                         "objectClass \"%s\" already mapped.\n",
1124                                         oc->soc_cname.bv_val );
1125                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1126                                         c->log, c->msg, 0 );
1127                                 return 1;
1128                         }
1129 #endif
1130
1131                         if ( (*dlip)->dli_ad == ad ) {
1132                                 snprintf( c->msg, sizeof( c->msg ),
1133                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1134                                         "URL attributeDescription \"%s\" already mapped.\n",
1135                                         ad->ad_cname.bv_val );
1136                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1137                                         c->log, c->msg, 0 );
1138                                 return 1;
1139                         }
1140
1141                         if ( member_ad != NULL && (*dlip)->dli_member_ad == member_ad ) {
1142                                 snprintf( c->msg, sizeof( c->msg ),
1143                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1144                                         "member attributeDescription \"%s\" already mapped.\n",
1145                                         member_ad->ad_cname.bv_val );
1146                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1147                                         c->log, c->msg, 0 );
1148                                 return 1;
1149                         }
1150                 }
1151
1152                 if ( c->valx > 0 ) {
1153                         int     i;
1154
1155                         for ( i = 0, dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1156                                 i < c->valx; i++ )
1157                         {
1158                                 if ( *dlip == NULL ) {
1159                                         snprintf( c->msg, sizeof( c->msg ),
1160                                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1161                                                 "invalid index {%d}\n",
1162                                                 c->valx );
1163                                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1164                                                 c->log, c->msg, 0 );
1165                                         return 1;
1166                                 }
1167                                 dlip = &(*dlip)->dli_next;
1168                         }
1169                         dli_next = *dlip;
1170
1171                 } else {
1172                         for ( dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1173                                 *dlip; dlip = &(*dlip)->dli_next )
1174                                 /* goto last */;
1175                 }
1176
1177                 *dlip = (dynlist_info_t *)ch_calloc( 1, sizeof( dynlist_info_t ) );
1178
1179                 (*dlip)->dli_oc = oc;
1180                 (*dlip)->dli_ad = ad;
1181                 (*dlip)->dli_member_ad = member_ad;
1182                 (*dlip)->dli_next = dli_next;
1183
1184                 rc = dynlist_build_def_filter( *dlip );
1185
1186                 } break;
1187
1188         case DL_ATTRPAIR_COMPAT:
1189                 snprintf( c->msg, sizeof( c->msg ),
1190                         "warning: \"attrpair\" only supported for limited "
1191                         "backward compatibility with overlay \"dyngroup\"" );
1192                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->msg, 0 );
1193                 /* fallthru */
1194
1195         case DL_ATTRPAIR: {
1196                 dynlist_info_t          **dlip;
1197                 ObjectClass             *oc = NULL;
1198                 AttributeDescription    *ad = NULL,
1199                                         *member_ad = NULL;
1200                 const char              *text;
1201
1202                 oc = oc_find( "groupOfURLs" );
1203                 if ( oc == NULL ) {
1204                         snprintf( c->msg, sizeof( c->msg ),
1205                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1206                                 "unable to find default ObjectClass \"groupOfURLs\"" );
1207                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1208                                 c->log, c->msg, 0 );
1209                         return 1;
1210                 }
1211
1212                 rc = slap_str2ad( c->argv[ 1 ], &member_ad, &text );
1213                 if ( rc != LDAP_SUCCESS ) {
1214                         snprintf( c->msg, sizeof( c->msg ),
1215                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1216                                 "unable to find AttributeDescription \"%s\"",
1217                                 c->argv[ 1 ] );
1218                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1219                                 c->log, c->msg, 0 );
1220                         return 1;
1221                 }
1222
1223                 rc = slap_str2ad( c->argv[ 2 ], &ad, &text );
1224                 if ( rc != LDAP_SUCCESS ) {
1225                         snprintf( c->msg, sizeof( c->msg ),
1226                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1227                                 "unable to find AttributeDescription \"%s\"\n",
1228                                 c->argv[ 2 ] );
1229                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1230                                 c->log, c->msg, 0 );
1231                         return 1;
1232                 }
1233
1234                 if ( !is_at_subtype( ad->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
1235                         snprintf( c->msg, sizeof( c->msg ),
1236                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1237                                 "AttributeDescription \"%s\" "
1238                                 "must be a subtype of \"labeledURI\"",
1239                                 c->argv[ 2 ] );
1240                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1241                                 c->log, c->msg, 0 );
1242                         return 1;
1243                 }
1244
1245                 for ( dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1246                         *dlip; dlip = &(*dlip)->dli_next )
1247                 {
1248                         /* The check on objectClass may be relaxed */
1249 #if 0
1250                         if ( (*dlip)->dli_oc == oc ) {
1251                                 snprintf( c->msg, sizeof( c->msg ),
1252                                         "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1253                                         "objectClass \"%s\" already mapped.\n",
1254                                         oc->soc_cname.bv_val );
1255                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1256                                         c->log, c->msg, 0 );
1257                                 return 1;
1258                         }
1259 #endif
1260
1261                         if ( (*dlip)->dli_ad == ad ) {
1262                                 snprintf( c->msg, sizeof( c->msg ),
1263                                         "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1264                                         "URL attributeDescription \"%s\" already mapped.\n",
1265                                         ad->ad_cname.bv_val );
1266                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1267                                         c->log, c->msg, 0 );
1268                                 return 1;
1269                         }
1270
1271                         if ( member_ad != NULL && (*dlip)->dli_member_ad == member_ad ) {
1272                                 snprintf( c->msg, sizeof( c->msg ),
1273                                         "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1274                                         "member attributeDescription \"%s\" already mapped.\n",
1275                                         member_ad->ad_cname.bv_val );
1276                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1277                                         c->log, c->msg, 0 );
1278                                 return 1;
1279                         }
1280                 }
1281
1282                 *dlip = (dynlist_info_t *)ch_calloc( 1, sizeof( dynlist_info_t ) );
1283
1284                 (*dlip)->dli_oc = oc;
1285                 (*dlip)->dli_ad = ad;
1286                 (*dlip)->dli_member_ad = member_ad;
1287
1288                 rc = dynlist_build_def_filter( *dlip );
1289
1290                 } break;
1291
1292         default:
1293                 rc = 1;
1294                 break;
1295         }
1296
1297         return rc;
1298 }
1299 #endif
1300
1301 static int
1302 dynlist_db_open(
1303         BackendDB       *be )
1304 {
1305         slap_overinst           *on = (slap_overinst *) be->bd_info;
1306         dynlist_info_t          *dli = (dynlist_info_t *)on->on_bi.bi_private;
1307         ObjectClass             *oc = NULL;
1308         AttributeDescription    *ad = NULL;
1309
1310         if ( dli == NULL ) {
1311                 dli = ch_calloc( 1, sizeof( dynlist_info_t ) );
1312                 on->on_bi.bi_private = (void *)dli;
1313         }
1314
1315         for ( ; dli; dli = dli->dli_next ) {
1316                 const char      *text;
1317                 int             rc;
1318
1319                 if ( dli->dli_oc == NULL ) {
1320                         if ( oc == NULL ) {
1321                                 oc = oc_find( "groupOfURLs" );
1322                                 if ( oc == NULL ) {
1323                                         Debug( LDAP_DEBUG_ANY, "dynlist_db_open: "
1324                                                 "unable to fetch objectClass \"groupOfURLs\".\n",
1325                                                 0, 0, 0 );
1326                                         return 1;
1327                                 }
1328                         }
1329
1330                         dli->dli_oc = oc;
1331                 }
1332
1333                 if ( dli->dli_ad == NULL ) {
1334                         if ( ad == NULL ) {
1335                                 rc = slap_str2ad( "memberURL", &ad, &text );
1336                                 if ( rc != LDAP_SUCCESS ) {
1337                                         Debug( LDAP_DEBUG_ANY, "dynlist_db_open: "
1338                                                 "unable to fetch attributeDescription \"memberURL\": %d (%s).\n",
1339                                                 rc, text, 0 );
1340                                         return 1;
1341                                 }
1342                         }
1343
1344                         dli->dli_ad = ad;
1345                 }
1346
1347                 if ( BER_BVISNULL( &dli->dli_default_filter ) ) {
1348                         rc = dynlist_build_def_filter( dli );
1349                         if ( rc != 0 ) {
1350                                 return rc;
1351                         }
1352                 }
1353         }
1354
1355         return 0;
1356 }
1357
1358 static int
1359 dynlist_db_destroy(
1360         BackendDB       *be )
1361 {
1362         slap_overinst   *on = (slap_overinst *) be->bd_info;
1363
1364         if ( on->on_bi.bi_private ) {
1365                 dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private,
1366                                 *dli_next;
1367
1368                 for ( dli_next = dli; dli_next; dli = dli_next ) {
1369                         dli_next = dli->dli_next;
1370
1371                         ch_free( dli->dli_default_filter.bv_val );
1372                         ch_free( dli );
1373                 }
1374         }
1375
1376         return 0;
1377 }
1378
1379 static slap_overinst    dynlist = { { NULL } };
1380 #ifdef TAKEOVER_DYNGROUP
1381 static char             *obsolete_names[] = {
1382         "dyngroup",
1383         NULL
1384 };
1385 #endif
1386
1387 #if SLAPD_OVER_DYNLIST == SLAPD_MOD_DYNAMIC
1388 static
1389 #endif /* SLAPD_OVER_DYNLIST == SLAPD_MOD_DYNAMIC */
1390 int
1391 dynlist_initialize(void)
1392 {
1393 #ifndef OL_2_2_COMPAT
1394         int     rc = 0;
1395 #endif
1396
1397         dynlist.on_bi.bi_type = "dynlist";
1398
1399 #ifdef TAKEOVER_DYNGROUP
1400         /* makes dynlist incompatible with dyngroup */
1401         dynlist.on_bi.bi_obsolete_names = obsolete_names;
1402 #endif
1403
1404 #ifdef OL_2_2_COMPAT
1405         dynlist.on_bi.bi_db_config = dynlist_db_config;
1406 #else
1407         dynlist.on_bi.bi_db_config = config_generic_wrapper;
1408 #endif
1409         dynlist.on_bi.bi_db_open = dynlist_db_open;
1410         dynlist.on_bi.bi_db_destroy = dynlist_db_destroy;
1411
1412         dynlist.on_response = dynlist_response;
1413
1414 #ifndef OL_2_2_COMPAT
1415         dynlist.on_bi.bi_cf_ocs = dlocs;
1416
1417         rc = config_register_schema( dlcfg, dlocs );
1418         if ( rc ) {
1419                 return rc;
1420         }
1421 #endif
1422
1423         return overlay_register( &dynlist );
1424 }
1425
1426 #if SLAPD_OVER_DYNLIST == SLAPD_MOD_DYNAMIC
1427 int
1428 init_module( int argc, char *argv[] )
1429 {
1430         return dynlist_initialize();
1431 }
1432 #endif
1433
1434 #endif /* SLAPD_OVER_DYNLIST */