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

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