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