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