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

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