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

   1 /* dynlist.c - dynamic list overlay */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 2003-2006 The OpenLDAP Foundation.
   5  * Portions Copyright 2004-2005 Pierangelo Masarati.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* ACKNOWLEDGEMENTS:
  17  * This work was initially developed by Pierangelo Masarati
  18  * for SysNet s.n.c., for inclusion in OpenLDAP Software.
  19  */
  20
  21 #include "portable.h"
  22
  23 #ifdef SLAPD_OVER_DYNLIST
  24
  25 #if LDAP_VENDOR_VERSION_MINOR != X && LDAP_VENDOR_VERSION_MINOR < 3
  26 #define OL_2_2_COMPAT
  27 #elif defined(LDAP_DEVEL) && SLAPD_OVER_DYNGROUP != SLAPD_MOD_STATIC
  28 #define TAKEOVER_DYNGROUP
  29 #endif
  30
  31 #include <stdio.h>
  32
  33 #include <ac/string.h>
  34
  35 #include "slap.h"
  36 #ifndef OL_2_2_COMPAT
  37 #include "config.h"
  38 #endif
  39 #include "lutil.h"
  40
  41 /* FIXME: the code differs if SLAP_OPATTRS is defined or not;
  42  * SLAP_OPATTRS is not defined in 2.2 yet, while this overlay
  43  * expects HEAD code at least later than August 6, 2004. */
  44 /* FIXME: slap_anlist_no_attrs was introduced in 2.3; here it
  45  * is anticipated to allow using this overlay with 2.2. */
  46
  47 #ifdef OL_2_2_COMPAT
  48 static AttributeName anlist_no_attrs[] = {
  49         { BER_BVC( LDAP_NO_ATTRS ), NULL, 0, NULL },
  50         { BER_BVNULL, NULL, 0, NULL }
  51 };
  52
  53 static AttributeName *slap_anlist_no_attrs = anlist_no_attrs;
  54 #endif
  55
  56 typedef struct dynlist_info_t {
  57         ObjectClass             *dli_oc;
  58         AttributeDescription    *dli_ad;
  59         AttributeDescription    *dli_member_ad;
  60         struct berval           dli_default_filter;
  61         struct dynlist_info_t   *dli_next;
  62 } dynlist_info_t;
  63
  64 static dynlist_info_t *
  65 dynlist_is_dynlist( Operation *op, SlapReply *rs )
  66 {
  67         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
  68         dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private;
  69
  70         Attribute       *a;
  71
  72         a = attrs_find( rs->sr_entry->e_attrs, slap_schema.si_ad_objectClass );
  73         if ( a == NULL ) {
  74                 /* FIXME: objectClass must be present; for non-storage
  75                  * backends, like back-ldap, it needs to be added
  76                  * to the requested attributes */
  77                 return NULL;
  78         }
  79
  80         for ( ; dli; dli = dli->dli_next ) {
  81                 if ( value_find_ex( slap_schema.si_ad_objectClass,
  82                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
  83                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
  84                                 a->a_nvals, &dli->dli_oc->soc_cname,
  85                                 op->o_tmpmemctx ) == 0 )
  86                 {
  87                         return dli;
  88                 }
  89         }
  90
  91         return NULL;
  92 }
  93
  94 static int
  95 dynlist_make_filter( Operation *op, struct berval *oldf, struct berval *newf )
  96 {
  97         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
  98         dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private;
  99
 100         char            *ptr;
 101
 102         assert( oldf != NULL );
 103         assert( newf != NULL );
 104         assert( !BER_BVISNULL( oldf ) );
 105         assert( !BER_BVISEMPTY( oldf ) );
 106
 107         newf->bv_len = STRLENOF( "(&(!(objectClass=" "))" ")" )
 108                 + dli->dli_oc->soc_cname.bv_len + oldf->bv_len;
 109         newf->bv_val = op->o_tmpalloc( newf->bv_len + 1, op->o_tmpmemctx );
 110         if ( newf->bv_val == NULL ) {
 111                 return -1;
 112         }
 113         ptr = lutil_strcopy( newf->bv_val, "(&(!(objectClass=" );
 114         ptr = lutil_strcopy( ptr, dli->dli_oc->soc_cname.bv_val );
 115         ptr = lutil_strcopy( ptr, "))" );
 116         ptr = lutil_strcopy( ptr, oldf->bv_val );
 117         ptr = lutil_strcopy( ptr, ")" );
 118         newf->bv_len = ptr - newf->bv_val;
 119
 120         return 0;
 121 }
 122
 123 typedef struct dynlist_sc_t {
 124         dynlist_info_t    *dlc_dli;
 125         Entry           *dlc_e;
 126 } dynlist_sc_t;
 127
 128 static int
 129 dynlist_sc_update( Operation *op, SlapReply *rs )
 130 {
 131         Entry                   *e;
 132         Attribute               *a;
 133         int                     opattrs,
 134                                 userattrs;
 135         AccessControlState      acl_state = ACL_STATE_INIT;
 136
 137         dynlist_sc_t            *dlc;
 138
 139         if ( rs->sr_type != REP_SEARCH ) {
 140                 return 0;
 141         }
 142
 143         dlc = (dynlist_sc_t *)op->o_callback->sc_private;
 144         e = dlc->dlc_e;
 145
 146         assert( e != NULL );
 147         assert( rs->sr_entry != NULL );
 148
 149         /* test access to entry */
 150         if ( !access_allowed( op, rs->sr_entry, slap_schema.si_ad_entry,
 151                                 NULL, ACL_READ, NULL ) )
 152         {
 153                 goto done;
 154         }
 155
 156         if ( dlc->dlc_dli->dli_member_ad ) {
 157
 158                 /* if access allowed, try to add values, emulating permissive
 159                  * control to silently ignore duplicates */
 160                 if ( access_allowed( op, rs->sr_entry, slap_schema.si_ad_entry,
 161                                         NULL, ACL_READ, NULL ) )
 162                 {
 163                         Modification    mod;
 164                         const char      *text = NULL;
 165                         char            textbuf[1024];
 166                         struct berval   vals[ 2 ], nvals[ 2 ];
 167
 168                         vals[ 0 ] = rs->sr_entry->e_name;
 169                         BER_BVZERO( &vals[ 1 ] );
 170                         nvals[ 0 ] = rs->sr_entry->e_nname;
 171                         BER_BVZERO( &nvals[ 1 ] );
 172
 173                         mod.sm_op = LDAP_MOD_ADD;
 174                         mod.sm_desc = dlc->dlc_dli->dli_member_ad;
 175                         mod.sm_type = dlc->dlc_dli->dli_member_ad->ad_cname;
 176                         mod.sm_values = vals;
 177                         mod.sm_nvalues = nvals;
 178
 179                         (void)modify_add_values( e, &mod, /* permissive */ 1,
 180                                         &text, textbuf, sizeof( textbuf ) );
 181                 }
 182
 183                 goto done;
 184         }
 185
 186 #ifndef SLAP_OPATTRS
 187         opattrs = ( rs->sr_attrs == NULL ) ? 0 : an_find( rs->sr_attrs, &AllOper );
 188         userattrs = ( rs->sr_attrs == NULL ) ? 1 : an_find( rs->sr_attrs, &AllUser );
 189 #else /* SLAP_OPATTRS */
 190         opattrs = SLAP_OPATTRS( rs->sr_attr_flags );
 191         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 192 #endif /* SLAP_OPATTRS */
 193
 194         for ( a = rs->sr_entry->e_attrs; a != NULL; a = a->a_next ) {
 195                 BerVarray       vals, nvals = NULL;
 196                 int             i, j;
 197
 198                 /* if attribute is not requested, skip it */
 199                 if ( rs->sr_attrs == NULL ) {
 200                         if ( is_at_operational( a->a_desc->ad_type ) ) {
 201                                 continue;
 202                         }
 203
 204                 } else {
 205                         if ( is_at_operational( a->a_desc->ad_type ) ) {
 206                                 if ( !opattrs && !ad_inlist( a->a_desc, rs->sr_attrs ) )
 207                                 {
 208                                         continue;
 209                                 }
 210
 211                         } else {
 212                                 if ( !userattrs && !ad_inlist( a->a_desc, rs->sr_attrs ) )
 213                                 {
 214                                         continue;
 215                                 }
 216                         }
 217                 }
 218
 219                 /* test access to attribute */
 220                 if ( op->ors_attrsonly ) {
 221                         if ( !access_allowed( op, rs->sr_entry, a->a_desc, NULL,
 222                                                 ACL_READ, &acl_state ) )
 223                         {
 224                                 continue;
 225                         }
 226                 }
 227
 228                 /* single-value check: keep first only */
 229                 if ( is_at_single_value( a->a_desc->ad_type ) ) {
 230                         if ( attr_find( e->e_attrs, a->a_desc ) != NULL ) {
 231                                 continue;
 232                         }
 233                 }
 234
 235                 /* test access to attribute */
 236                 for ( i = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ )
 237                         /* just count */ ;
 238
 239                 vals = op->o_tmpalloc( ( i + 1 ) * sizeof( struct berval ), op->o_tmpmemctx );
 240                 if ( a->a_nvals != a->a_vals ) {
 241                         nvals = op->o_tmpalloc( ( i + 1 ) * sizeof( struct berval ), op->o_tmpmemctx );
 242                 }
 243
 244                 for ( i = 0, j = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ ) {
 245                         if ( access_allowed( op, rs->sr_entry, a->a_desc,
 246                                                 &a->a_nvals[i], ACL_READ, &acl_state ) )
 247                         {
 248                                 vals[j] = a->a_vals[i];
 249                                 if ( nvals ) {
 250                                         nvals[j] = a->a_nvals[i];
 251                                 }
 252                                 j++;
 253                         }
 254                 }
 255
 256                 /* if access allowed, try to add values, emulating permissive
 257                  * control to silently ignore duplicates */
 258                 if ( j != 0 ) {
 259                         Modification    mod;
 260                         const char      *text = NULL;
 261                         char            textbuf[1024];
 262
 263                         BER_BVZERO( &vals[j] );
 264                         if ( nvals ) {
 265                                 BER_BVZERO( &nvals[j] );
 266                         }
 267
 268                         mod.sm_op = LDAP_MOD_ADD;
 269                         mod.sm_desc = a->a_desc;
 270                         mod.sm_type = a->a_desc->ad_cname;
 271                         mod.sm_values = vals;
 272                         mod.sm_nvalues = nvals;
 273
 274                         (void)modify_add_values( e, &mod, /* permissive */ 1,
 275                                         &text, textbuf, sizeof( textbuf ) );
 276                 }
 277
 278                 op->o_tmpfree( vals, op->o_tmpmemctx );
 279                 if ( nvals ) {
 280                         op->o_tmpfree( nvals, op->o_tmpmemctx );
 281                 }
 282         }
 283
 284 done:;
 285         if ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) {
 286                 entry_free( rs->sr_entry );
 287         }
 288
 289         return 0;
 290 }
 291
 292 static int
 293 dynlist_send_entry( Operation *op, SlapReply *rs, dynlist_info_t *dli )
 294 {
 295         Attribute       *a;
 296         slap_callback   cb;
 297         Operation       o = *op;
 298         SlapReply       r = { REP_SEARCH };
 299         struct berval   *url;
 300         Entry           *e;
 301         slap_mask_t     e_flags;
 302         int             opattrs,
 303                         userattrs;
 304         dynlist_sc_t    dlc = { 0 };
 305
 306         a = attrs_find( rs->sr_entry->e_attrs, dli->dli_ad );
 307         if ( a == NULL ) {
 308                 /* FIXME: error? */
 309                 return SLAP_CB_CONTINUE;
 310         }
 311
 312         e = entry_dup( rs->sr_entry );
 313         e_flags = rs->sr_flags | ( REP_ENTRY_MODIFIABLE | REP_ENTRY_MUSTBEFREED );
 314
 315         dlc.dlc_e = e;
 316         dlc.dlc_dli = dli;
 317         cb.sc_private = &dlc;
 318         cb.sc_response = dynlist_sc_update;
 319         cb.sc_cleanup = NULL;
 320         cb.sc_next = NULL;
 321
 322         o.o_callback = &cb;
 323         o.ors_deref = LDAP_DEREF_NEVER;
 324         o.ors_limit = NULL;
 325         o.ors_tlimit = SLAP_NO_LIMIT;
 326         o.ors_slimit = SLAP_NO_LIMIT;
 327
 328 #ifndef SLAP_OPATTRS
 329         opattrs = ( rs->sr_attrs == NULL ) ? 0 : an_find( rs->sr_attrs, &AllOper );
 330         userattrs = ( rs->sr_attrs == NULL ) ? 1 : an_find( rs->sr_attrs, &AllUser );
 331 #else /* SLAP_OPATTRS */
 332         opattrs = SLAP_OPATTRS( rs->sr_attr_flags );
 333         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 334 #endif /* SLAP_OPATTRS */
 335
 336         for ( url = a->a_nvals; !BER_BVISNULL( url ); url++ ) {
 337                 LDAPURLDesc     *lud = NULL;
 338                 int             i, j;
 339                 struct berval   dn;
 340                 int             rc;
 341
 342                 BER_BVZERO( &o.o_req_dn );
 343                 BER_BVZERO( &o.o_req_ndn );
 344                 o.ors_filter = NULL;
 345                 o.ors_attrs = NULL;
 346                 BER_BVZERO( &o.ors_filterstr );
 347
 348                 if ( ldap_url_parse( url->bv_val, &lud ) != LDAP_URL_SUCCESS ) {
 349                         /* FIXME: error? */
 350                         continue;
 351                 }
 352
 353                 if ( lud->lud_host ) {
 354                         /* FIXME: host not allowed; reject as illegal? */
 355                         Debug( LDAP_DEBUG_ANY, "dynlist_send_entry(\"%s\"): "
 356                                 "illegal URI \"%s\"\n",
 357                                 e->e_name.bv_val, url->bv_val, 0 );
 358                         goto cleanup;
 359                 }
 360
 361                 if ( lud->lud_dn == NULL ) {
 362                         /* note that an empty base is not honored in terms
 363                          * of defaultSearchBase, because select_backend()
 364                          * is not aware of the defaultSearchBase option;
 365                          * this can be useful in case of a database serving
 366                          * the empty suffix */
 367                         BER_BVSTR( &dn, "" );
 368                 } else {
 369                         ber_str2bv( lud->lud_dn, 0, 0, &dn );
 370                 }
 371                 rc = dnPrettyNormal( NULL, &dn, &o.o_req_dn, &o.o_req_ndn, op->o_tmpmemctx );
 372                 if ( rc != LDAP_SUCCESS ) {
 373                         /* FIXME: error? */
 374                         goto cleanup;
 375                 }
 376                 o.ors_scope = lud->lud_scope;
 377
 378                 if ( dli->dli_member_ad != NULL ) {
 379                         /* if ( lud->lud_attrs != NULL ),
 380                          * the URL should be ignored */
 381                         o.ors_attrs = slap_anlist_no_attrs;
 382
 383                 } else if ( lud->lud_attrs == NULL ) {
 384                         o.ors_attrs = rs->sr_attrs;
 385
 386                 } else {
 387                         for ( i = 0; lud->lud_attrs[i]; i++)
 388                                 /* just count */ ;
 389
 390                         o.ors_attrs = op->o_tmpcalloc( i + 1, sizeof( AttributeName ), op->o_tmpmemctx );
 391                         for ( i = 0, j = 0; lud->lud_attrs[i]; i++) {
 392                                 const char      *text = NULL;
 393
 394                                 ber_str2bv( lud->lud_attrs[i], 0, 0, &o.ors_attrs[j].an_name );
 395                                 o.ors_attrs[j].an_desc = NULL;
 396                                 (void)slap_bv2ad( &o.ors_attrs[j].an_name, &o.ors_attrs[j].an_desc, &text );
 397                                 /* FIXME: ignore errors... */
 398
 399                                 if ( rs->sr_attrs == NULL ) {
 400                                         if ( o.ors_attrs[j].an_desc != NULL &&
 401                                                         is_at_operational( o.ors_attrs[j].an_desc->ad_type ) )
 402                                         {
 403                                                 continue;
 404                                         }
 405
 406                                 } else {
 407                                         if ( o.ors_attrs[j].an_desc != NULL &&
 408                                                         is_at_operational( o.ors_attrs[j].an_desc->ad_type ) )
 409                                         {
 410                                                 if ( !opattrs && !ad_inlist( o.ors_attrs[j].an_desc, rs->sr_attrs ) )
 411                                                 {
 412                                                         continue;
 413                                                 }
 414
 415                                         } else {
 416                                                 if ( !userattrs &&
 417                                                                 o.ors_attrs[j].an_desc != NULL &&
 418                                                                 !ad_inlist( o.ors_attrs[j].an_desc, rs->sr_attrs ) )
 419                                                 {
 420                                                         continue;
 421                                                 }
 422                                         }
 423                                 }
 424
 425                                 j++;
 426                         }
 427
 428                         if ( j == 0 ) {
 429                                 goto cleanup;
 430                         }
 431
 432                         BER_BVZERO( &o.ors_attrs[j].an_name );
 433                 }
 434
 435                 if ( lud->lud_filter == NULL ) {
 436                         ber_dupbv_x( &o.ors_filterstr,
 437                                         &dli->dli_default_filter, op->o_tmpmemctx );
 438                 } else {
 439                         struct berval   flt;
 440                         ber_str2bv( lud->lud_filter, 0, 0, &flt );
 441                         if ( dynlist_make_filter( op, &flt, &o.ors_filterstr ) ) {
 442                                 /* error */
 443                                 goto cleanup;
 444                         }
 445                 }
 446                 o.ors_filter = str2filter_x( op, o.ors_filterstr.bv_val );
 447                 if ( o.ors_filter == NULL ) {
 448                         goto cleanup;
 449                 }
 450
 451                 o.o_bd = select_backend( &o.o_req_ndn, 0, 1 );
 452                 if ( o.o_bd && o.o_bd->be_search ) {
 453 #ifdef SLAP_OPATTRS
 454                         r.sr_attr_flags = slap_attr_flags( o.ors_attrs );
 455 #endif /* SLAP_OPATTRS */
 456                         (void)o.o_bd->be_search( &o, &r );
 457                 }
 458
 459 cleanup:;
 460                 if ( o.ors_filter ) {
 461                         filter_free_x( &o, o.ors_filter );
 462                 }
 463                 if ( o.ors_attrs && o.ors_attrs != rs->sr_attrs
 464                                 && o.ors_attrs != slap_anlist_no_attrs )
 465                 {
 466                         op->o_tmpfree( o.ors_attrs, op->o_tmpmemctx );
 467                 }
 468                 if ( !BER_BVISNULL( &o.o_req_dn ) ) {
 469                         op->o_tmpfree( o.o_req_dn.bv_val, op->o_tmpmemctx );
 470                 }
 471                 if ( !BER_BVISNULL( &o.o_req_ndn ) ) {
 472                         op->o_tmpfree( o.o_req_ndn.bv_val, op->o_tmpmemctx );
 473                 }
 474                 if ( o.ors_filterstr.bv_val != lud->lud_filter ) {
 475                         op->o_tmpfree( o.ors_filterstr.bv_val, op->o_tmpmemctx );
 476                         lud->lud_filter = NULL;
 477                 }
 478                 if ( lud ) {
 479                         ldap_free_urldesc( lud );
 480                 }
 481         }
 482
 483         rs->sr_entry = e;
 484         rs->sr_flags = e_flags;
 485
 486         return SLAP_CB_CONTINUE;
 487 }
 488
 489 static int
 490 dynlist_sc_save_entry( Operation *op, SlapReply *rs )
 491 {
 492         /* save the entry in the private field of the callback,
 493          * so it doesn't get freed (it's temporary!) */
 494         if ( rs->sr_entry != NULL ) {
 495                 dynlist_sc_t    *dlc = (dynlist_sc_t *)op->o_callback->sc_private;
 496                 dlc->dlc_e = rs->sr_entry;
 497                 rs->sr_entry = NULL;
 498         }
 499
 500         return 0;
 501 }
 502
 503 static int
 504 dynlist_compare( Operation *op, SlapReply *rs )
 505 {
 506         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 507         dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private;
 508
 509         for ( ; dli != NULL; dli = dli->dli_next ) {
 510                 if ( op->oq_compare.rs_ava->aa_desc == dli->dli_member_ad ) {
 511                         /* This compare is for one of the attributes we're
 512                          * interested in. We'll use slapd's existing dyngroup
 513                          * evaluator to get the answer we want.
 514                          */
 515                         int cache = op->o_do_not_cache;
 516
 517                         op->o_do_not_cache = 1;
 518                         rs->sr_err = backend_group( op, NULL, &op->o_req_ndn,
 519                                 &op->oq_compare.rs_ava->aa_value, dli->dli_oc, dli->dli_ad );
 520                         op->o_do_not_cache = cache;
 521                         switch ( rs->sr_err ) {
 522                         case LDAP_SUCCESS:
 523                                 rs->sr_err = LDAP_COMPARE_TRUE;
 524                                 break;
 525
 526                         case LDAP_NO_SUCH_OBJECT:
 527                                 /* NOTE: backend_group() returns noSuchObject
 528                                  * if op_ndn does not exist; however, since
 529                                  * dynamic list expansion means that the
 530                                  * member attribute is virtually present, the
 531                                  * non-existence of the asserted value implies
 532                                  * the assertion is FALSE rather than
 533                                  * UNDEFINED */
 534                                 rs->sr_err = LDAP_COMPARE_FALSE;
 535                                 break;
 536                         }
 537
 538                         return SLAP_CB_CONTINUE;
 539                 }
 540         }
 541
 542         dli = (dynlist_info_t *)on->on_bi.bi_private;
 543         for ( ; dli != NULL && rs->sr_err != LDAP_COMPARE_TRUE; dli = dli->dli_next ) {
 544                 Attribute       *a;
 545                 slap_callback   cb;
 546                 Operation       o = *op;
 547                 SlapReply       r = { REP_SEARCH };
 548                 AttributeName   an[2];
 549                 int             rc;
 550                 dynlist_sc_t    dlc = { 0 };
 551                 Entry           *e;
 552
 553                 int cache = op->o_do_not_cache;
 554                 struct berval   op_dn = op->o_dn,
 555                                 op_ndn = op->o_ndn;
 556                 BackendDB       *op_bd = op->o_bd;
 557
 558                 /* fetch the entry as rootdn (a hack to see if it exists
 559                  * and if it has the right objectClass) */
 560                 op->o_do_not_cache = 1;
 561                 op->o_dn = op->o_bd->be_rootdn;
 562                 op->o_ndn = op->o_bd->be_rootndn;
 563                 op->o_bd = select_backend( &op->o_req_ndn, 0, 0 );
 564
 565                 r.sr_err = be_entry_get_rw( op, &op->o_req_ndn,
 566                         dli->dli_oc, NULL, 0, &e );
 567                 if ( e != NULL ) {
 568                         be_entry_release_r( op, e );
 569                 }
 570                 op->o_do_not_cache = cache;
 571                 op->o_dn = op_dn;
 572                 op->o_ndn = op_ndn;
 573                 op->o_bd = op_bd;
 574                 if ( r.sr_err != LDAP_SUCCESS ) {
 575                         continue;
 576                 }
 577
 578                 /* if the entry has the right objectClass, generate
 579                  * the dynamic list and compare */
 580                 dlc.dlc_dli = dli;
 581                 cb.sc_private = &dlc;
 582                 cb.sc_response = dynlist_sc_save_entry;
 583                 cb.sc_cleanup = NULL;
 584                 cb.sc_next = NULL;
 585                 o.o_callback = &cb;
 586
 587                 o.o_tag = LDAP_REQ_SEARCH;
 588                 o.ors_limit = NULL;
 589                 o.ors_tlimit = SLAP_NO_LIMIT;
 590                 o.ors_slimit = SLAP_NO_LIMIT;
 591
 592                 o.o_bd = select_backend( &o.o_req_ndn, 0, 1 );
 593                 if ( !o.o_bd || !o.o_bd->be_search ) {
 594                         return SLAP_CB_CONTINUE;
 595                 }
 596
 597                 BER_BVSTR( &o.ors_filterstr, "(objectClass=*)" );
 598                 o.ors_filter = str2filter_x( op, o.ors_filterstr.bv_val );
 599                 if ( o.ors_filter == NULL ) {
 600                         /* FIXME: error? */
 601                         return SLAP_CB_CONTINUE;
 602                 }
 603
 604                 o.ors_scope = LDAP_SCOPE_BASE;
 605                 o.ors_deref = LDAP_DEREF_NEVER;
 606                 an[0].an_name = op->orc_ava->aa_desc->ad_cname;
 607                 an[0].an_desc = op->orc_ava->aa_desc;
 608                 BER_BVZERO( &an[1].an_name );
 609                 o.ors_attrs = an;
 610                 o.ors_attrsonly = 0;
 611
 612                 rc = o.o_bd->be_search( &o, &r );
 613                 filter_free_x( &o, o.ors_filter );
 614
 615                 if ( rc != 0 ) {
 616                         return rc;
 617                 }
 618
 619                 if ( dlc.dlc_e != NULL ) {
 620                         r.sr_entry = dlc.dlc_e;
 621                 }
 622
 623                 if ( r.sr_err != LDAP_SUCCESS || r.sr_entry == NULL ) {
 624                         /* error? */
 625                         return SLAP_CB_CONTINUE;
 626                 }
 627
 628                 for ( a = attrs_find( r.sr_entry->e_attrs, op->orc_ava->aa_desc );
 629                         a != NULL;
 630                         a = attrs_find( a->a_next, op->orc_ava->aa_desc ) )
 631                 {
 632                         /* if we're here, we got a match... */
 633                         rs->sr_err = LDAP_COMPARE_FALSE;
 634
 635                         if ( value_find_ex( op->orc_ava->aa_desc,
 636                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
 637                                         SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
 638                                 a->a_nvals, &op->orc_ava->aa_value, op->o_tmpmemctx ) == 0 )
 639                         {
 640                                 rs->sr_err = LDAP_COMPARE_TRUE;
 641                                 break;
 642                         }
 643                 }
 644
 645                 if ( r.sr_flags & REP_ENTRY_MUSTBEFREED ) {
 646                         entry_free( r.sr_entry );
 647                 }
 648         }
 649
 650         return SLAP_CB_CONTINUE;
 651 }
 652
 653 static int
 654 dynlist_response( Operation *op, SlapReply *rs )
 655 {
 656         dynlist_info_t  *dli;
 657
 658         switch ( op->o_tag ) {
 659         case LDAP_REQ_SEARCH:
 660                 if ( rs->sr_type == REP_SEARCH && !get_manageDSAit( op ) )
 661                 {
 662                         dli = dynlist_is_dynlist( op, rs );
 663                         if ( dli != NULL ) {
 664                                 return dynlist_send_entry( op, rs, dli );
 665                         }
 666                 }
 667                 break;
 668
 669         case LDAP_REQ_COMPARE:
 670                 switch ( rs->sr_err ) {
 671                 /* NOTE: we waste a few cycles running the dynamic list
 672                  * also when the result is FALSE, which occurs if the
 673                  * dynamic entry itself contains the AVA attribute  */
 674                 /* FIXME: this approach is less than optimal; a dedicated
 675                  * compare op should be implemented, that fetches the
 676                  * entry, checks if it has the appropriate objectClass
 677                  * and, in case, runs a compare thru all the URIs,
 678                  * stopping at the first positive occurrence; see ITS#3756 */
 679                 case LDAP_COMPARE_FALSE:
 680                 case LDAP_NO_SUCH_ATTRIBUTE:
 681                         return dynlist_compare( op, rs );
 682                 }
 683                 break;
 684
 685         default:
 686                 break;
 687         }
 688
 689         return SLAP_CB_CONTINUE;
 690 }
 691
 692 static int
 693 dynlist_build_def_filter( dynlist_info_t *dli )
 694 {
 695         char    *ptr;
 696
 697         dli->dli_default_filter.bv_len = STRLENOF( "(!(objectClass=" "))" )
 698                 + dli->dli_oc->soc_cname.bv_len;
 699         dli->dli_default_filter.bv_val = SLAP_MALLOC( dli->dli_default_filter.bv_len + 1 );
 700         if ( dli->dli_default_filter.bv_val == NULL ) {
 701                 Debug( LDAP_DEBUG_ANY, "dynlist_db_open: malloc failed.\n",
 702                         0, 0, 0 );
 703                 return -1;
 704         }
 705
 706         ptr = lutil_strcopy( dli->dli_default_filter.bv_val, "(!(objectClass=" );
 707         ptr = lutil_strcopy( ptr, dli->dli_oc->soc_cname.bv_val );
 708         ptr = lutil_strcopy( ptr, "))" );
 709
 710         assert( dli->dli_default_filter.bv_len == ptr - dli->dli_default_filter.bv_val );
 711
 712         return 0;
 713 }
 714
 715 #ifdef OL_2_2_COMPAT
 716 static int
 717 dynlist_db_config(
 718         BackendDB       *be,
 719         const char      *fname,
 720         int             lineno,
 721         int             argc,
 722         char            **argv )
 723 {
 724         slap_overinst   *on = (slap_overinst *)be->bd_info;
 725
 726         int             rc = 0;
 727
 728         if ( strcasecmp( argv[0], "dynlist-attrset" ) == 0 ) {
 729                 dynlist_info_t          **dlip;
 730                 ObjectClass             *oc;
 731                 AttributeDescription    *ad = NULL,
 732                                         *member_ad = NULL;
 733                 const char              *text;
 734
 735                 if ( argc < 3 || argc > 4 ) {
 736                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 737                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 738                                 "invalid arg number #%d.\n",
 739                                 fname, lineno, argc );
 740                         return 1;
 741                 }
 742
 743                 oc = oc_find( argv[1] );
 744                 if ( oc == NULL ) {
 745                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 746                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 747                                 "unable to find ObjectClass \"%s\"\n",
 748                                 fname, lineno, argv[ 1 ] );
 749                         return 1;
 750                 }
 751
 752                 rc = slap_str2ad( argv[2], &ad, &text );
 753                 if ( rc != LDAP_SUCCESS ) {
 754                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 755                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 756                                 "unable to find AttributeDescription \"%s\"\n",
 757                                 fname, lineno, argv[2] );
 758                         return 1;
 759                 }
 760
 761                 if ( !is_at_subtype( ad->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
 762                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 763                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 764                                 "AttributeDescription \"%s\" "
 765                                 "must be a subtype of \"labeledURI\"\n",
 766                                 fname, lineno, argv[2] );
 767                         return 1;
 768                 }
 769
 770                 if ( argc == 4 ) {
 771                         rc = slap_str2ad( argv[3], &member_ad, &text );
 772                         if ( rc != LDAP_SUCCESS ) {
 773                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 774                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 775                                         "unable to find AttributeDescription \"%s\"\n",
 776                                         fname, lineno, argv[3] );
 777                                 return 1;
 778                         }
 779                 }
 780
 781                 for ( dlip = (dynlist_info_t **)&on->on_bi.bi_private;
 782                         *dlip; dlip = &(*dlip)->dli_next )
 783                 {
 784                         /* The check on objectClass may be relaxed */
 785 #if 0
 786                         if ( (*dlip)->dli_oc == oc ) {
 787                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 788                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 789                                         "objectClass \"%s\" already mapped.\n",
 790                                         fname, lineno, oc->soc_cname.bv_val );
 791                                 return 1;
 792                         }
 793 #endif
 794
 795                         if ( (*dlip)->dli_ad == ad ) {
 796                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 797                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 798                                         "URL attributeDescription \"%s\" already mapped.\n",
 799                                         fname, lineno, ad->ad_cname.bv_val );
 800                                 return 1;
 801                         }
 802
 803                         if ( member_ad != NULL && (*dlip)->dli_member_ad == member_ad ) {
 804                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 805                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
 806                                         "member attributeDescription \"%s\" already mapped.\n",
 807                                         fname, lineno, member_ad->ad_cname.bv_val );
 808                                 return 1;
 809                         }
 810                 }
 811
 812                 *dlip = (dynlist_info_t *)ch_calloc( 1, sizeof( dynlist_info_t ) );
 813                 (*dlip)->dli_oc = oc;
 814                 (*dlip)->dli_ad = ad;
 815                 (*dlip)->dli_member_ad = member_ad;
 816
 817                 if ( dynlist_build_def_filter( *dlip ) ) {
 818                         ch_free( *dlip );
 819                         *dlip = NULL;
 820                         return 1;
 821                 }
 822
 823         /* allow dyngroup syntax */
 824         } else if ( strcasecmp( argv[0], "dynlist-attrpair" ) == 0 ) {
 825                 dynlist_info_t          **dlip;
 826                 ObjectClass             *oc;
 827                 AttributeDescription    *ad = NULL,
 828                                         *member_ad = NULL;
 829                 const char              *text;
 830
 831                 if ( argc != 3 ) {
 832                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 833                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 834                                 "invalid arg number #%d.\n",
 835                                 fname, lineno, argc );
 836                         return 1;
 837                 }
 838
 839                 oc = oc_find( "groupOfURLs" );
 840                 if ( oc == NULL ) {
 841                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 842                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 843                                 "unable to find default ObjectClass \"groupOfURLs\"\n",
 844                                 fname, lineno, 0 );
 845                         return 1;
 846                 }
 847
 848                 rc = slap_str2ad( argv[1], &member_ad, &text );
 849                 if ( rc != LDAP_SUCCESS ) {
 850                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 851                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 852                                 "unable to find AttributeDescription \"%s\"\n",
 853                                 fname, lineno, argv[1] );
 854                         return 1;
 855                 }
 856
 857                 rc = slap_str2ad( argv[2], &ad, &text );
 858                 if ( rc != LDAP_SUCCESS ) {
 859                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 860                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 861                                 "unable to find AttributeDescription \"%s\"\n",
 862                                 fname, lineno, argv[2] );
 863                         return 1;
 864                 }
 865
 866                 if ( !is_at_subtype( ad->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
 867                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 868                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 869                                 "AttributeDescription \"%s\" "
 870                                 "must be a subtype of \"labeledURI\"\n",
 871                                 fname, lineno, argv[2] );
 872                         return 1;
 873                 }
 874
 875
 876                 for ( dlip = (dynlist_info_t **)&on->on_bi.bi_private;
 877                         *dlip; dlip = &(*dlip)->dli_next )
 878                 {
 879 #if 0
 880                         /* The check on objectClass may be relaxed */
 881                         if ( (*dlip)->dli_oc == oc ) {
 882                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 883                                         "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 884                                         "objectClass \"%s\" already mapped.\n",
 885                                         fname, lineno, oc->soc_cname.bv_val );
 886                                 return 1;
 887                         }
 888 #endif
 889
 890                         if ( (*dlip)->dli_ad == ad ) {
 891                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 892                                         "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 893                                         "URL attributeDescription \"%s\" already mapped.\n",
 894                                         fname, lineno, ad->ad_cname.bv_val );
 895                                 return 1;
 896                         }
 897
 898                         if ( member_ad != NULL && (*dlip)->dli_member_ad == member_ad ) {
 899                                 Debug( LDAP_DEBUG_ANY, "%s: line %d: "
 900                                         "\"dynlist-attrpair <member-ad> <URL-ad>\": "
 901                                         "member attributeDescription \"%s\" already mapped.\n",
 902                                         fname, lineno, member_ad->ad_cname.bv_val );
 903                                 return 1;
 904                         }
 905                 }
 906
 907                 *dlip = (dynlist_info_t *)ch_calloc( 1, sizeof( dynlist_info_t ) );
 908                 (*dlip)->dli_oc = oc;
 909                 (*dlip)->dli_ad = ad;
 910                 (*dlip)->dli_member_ad = member_ad;
 911
 912                 if ( dynlist_build_def_filter( *dlip ) ) {
 913                         ch_free( *dlip );
 914                         *dlip = NULL;
 915                         return 1;
 916                 }
 917
 918         } else {
 919                 rc = SLAP_CONF_UNKNOWN;
 920         }
 921
 922         return rc;
 923 }
 924
 925 #else
 926 enum {
 927         DL_ATTRSET = 1,
 928         DL_ATTRPAIR,
 929         DL_ATTRPAIR_COMPAT,
 930         DL_LAST
 931 };
 932
 933 static ConfigDriver     dl_cfgen;
 934
 935 static ConfigTable dlcfg[] = {
 936         { "dynlist-attrset", "group-oc> <URL-ad> <member-ad",
 937                 3, 4, 0, ARG_MAGIC|DL_ATTRSET, dl_cfgen,
 938                 "( OLcfgOvAt:8.1 NAME 'olcDLattrSet' "
 939                         "DESC 'Dynamic list: <group objectClass>, <URL attributeDescription>, <member attributeDescription>' "
 940                         "EQUALITY caseIgnoreMatch "
 941                         "SYNTAX OMsDirectoryString "
 942                         "X-ORDERED 'VALUES' )",
 943                         NULL, NULL },
 944         { "dynlist-attrpair", "member-ad> <URL-ad",
 945                 3, 3, 0, ARG_MAGIC|DL_ATTRPAIR, dl_cfgen,
 946                         NULL, NULL, NULL },
 947 #ifdef TAKEOVER_DYNGROUP
 948         { "attrpair", "member-ad> <URL-ad",
 949                 3, 3, 0, ARG_MAGIC|DL_ATTRPAIR_COMPAT, dl_cfgen,
 950                         NULL, NULL, NULL },
 951 #endif
 952         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
 953 };
 954
 955 static ConfigOCs dlocs[] = {
 956         { "( OLcfgOvOc:8.1 "
 957                 "NAME 'olcDynamicList' "
 958                 "DESC 'Dynamic list configuration' "
 959                 "SUP olcOverlayConfig "
 960                 "MAY olcDLattrSet )",
 961                 Cft_Overlay, dlcfg, NULL, NULL },
 962         { NULL, 0, NULL }
 963 };
 964
 965 static int
 966 dl_cfgen( ConfigArgs *c )
 967 {
 968         slap_overinst   *on = (slap_overinst *)c->bi;
 969         dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private;
 970
 971         int             rc = 0, i;
 972
 973         if ( c->op == SLAP_CONFIG_EMIT ) {
 974                 switch( c->type ) {
 975                 case DL_ATTRSET:
 976                         for ( i = 0; dli; i++, dli = dli->dli_next ) {
 977                                 struct berval   bv;
 978                                 char            *ptr = c->msg;
 979
 980                                 assert( dli->dli_oc != NULL );
 981                                 assert( dli->dli_ad != NULL );
 982
 983                                 ptr += snprintf( c->msg, sizeof( c->msg ),
 984                                         SLAP_X_ORDERED_FMT "%s %s", i,
 985                                         dli->dli_oc->soc_cname.bv_val,
 986                                         dli->dli_ad->ad_cname.bv_val );
 987
 988                                 if ( dli->dli_member_ad != NULL ) {
 989                                         ptr[ 0 ] = ' ';
 990                                         ptr++;
 991                                         ptr = lutil_strcopy( ptr, dli->dli_member_ad->ad_cname.bv_val );
 992                                 }
 993
 994                                 bv.bv_val = c->msg;
 995                                 bv.bv_len = ptr - bv.bv_val;
 996                                 value_add_one( &c->rvalue_vals, &bv );
 997                         }
 998                         break;
 999
1000                 case DL_ATTRPAIR_COMPAT:
1001                 case DL_ATTRPAIR:
1002                         rc = 1;
1003                         break;
1004
1005                 default:
1006                         rc = 1;
1007                         break;
1008                 }
1009
1010                 return rc;
1011
1012         } else if ( c->op == LDAP_MOD_DELETE ) {
1013                 switch( c->type ) {
1014                 case DL_ATTRSET:
1015                         if ( c->valx < 0 ) {
1016                                 dynlist_info_t  *dli_next;
1017
1018                                 for ( dli_next = dli; dli_next; dli = dli_next ) {
1019                                         dli_next = dli->dli_next;
1020
1021                                         ch_free( dli->dli_default_filter.bv_val );
1022                                         ch_free( dli );
1023                                 }
1024
1025                                 on->on_bi.bi_private = NULL;
1026
1027                         } else {
1028                                 dynlist_info_t  **dlip;
1029
1030                                 for ( i = 0, dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1031                                         i < c->valx; i++ )
1032                                 {
1033                                         if ( *dlip == NULL ) {
1034                                                 return 1;
1035                                         }
1036                                         dlip = &(*dlip)->dli_next;
1037                                 }
1038
1039                                 dli = *dlip;
1040                                 *dlip = dli->dli_next;
1041                                 ch_free( dli->dli_default_filter.bv_val );
1042                                 ch_free( dli );
1043
1044                                 dli = (dynlist_info_t *)on->on_bi.bi_private;
1045                         }
1046                         break;
1047
1048                 case DL_ATTRPAIR_COMPAT:
1049                 case DL_ATTRPAIR:
1050                         rc = 1;
1051                         break;
1052
1053                 default:
1054                         rc = 1;
1055                         break;
1056                 }
1057
1058                 return 1;       /* FIXME */
1059         }
1060
1061         switch( c->type ) {
1062         case DL_ATTRSET: {
1063                 dynlist_info_t          **dlip,
1064                                         *dli_next = NULL;
1065                 ObjectClass             *oc = NULL;
1066                 AttributeDescription    *ad = NULL,
1067                                         *member_ad = NULL;
1068                 const char              *text;
1069
1070                 oc = oc_find( c->argv[ 1 ] );
1071                 if ( oc == NULL ) {
1072                         snprintf( c->msg, sizeof( c->msg ),
1073                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1074                                 "unable to find ObjectClass \"%s\"",
1075                                 c->argv[ 1 ] );
1076                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1077                                 c->log, c->msg, 0 );
1078                         return 1;
1079                 }
1080
1081                 rc = slap_str2ad( c->argv[ 2 ], &ad, &text );
1082                 if ( rc != LDAP_SUCCESS ) {
1083                         snprintf( c->msg, sizeof( c->msg ),
1084                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1085                                 "unable to find AttributeDescription \"%s\"",
1086                                 c->argv[ 2 ] );
1087                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1088                                 c->log, c->msg, 0 );
1089                         return 1;
1090                 }
1091
1092                 if ( !is_at_subtype( ad->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
1093                         snprintf( c->msg, sizeof( c->msg ),
1094                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1095                                 "AttributeDescription \"%s\" "
1096                                 "must be a subtype of \"labeledURI\"",
1097                                 c->argv[ 2 ] );
1098                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1099                                 c->log, c->msg, 0 );
1100                         return 1;
1101                 }
1102
1103                 if ( c->argc == 4 ) {
1104                         rc = slap_str2ad( c->argv[ 3 ], &member_ad, &text );
1105                         if ( rc != LDAP_SUCCESS ) {
1106                                 snprintf( c->msg, sizeof( c->msg ),
1107                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1108                                         "unable to find AttributeDescription \"%s\"\n",
1109                                         c->argv[ 3 ] );
1110                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1111                                         c->log, c->msg, 0 );
1112                                 return 1;
1113                         }
1114                 }
1115
1116                 for ( dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1117                         *dlip; dlip = &(*dlip)->dli_next )
1118                 {
1119                         /* The check on objectClass may be relaxed */
1120 #if 0
1121                         if ( (*dlip)->dli_oc == oc ) {
1122                                 snprintf( c->msg, sizeof( c->msg ),
1123                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1124                                         "objectClass \"%s\" already mapped.\n",
1125                                         oc->soc_cname.bv_val );
1126                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1127                                         c->log, c->msg, 0 );
1128                                 return 1;
1129                         }
1130 #endif
1131
1132                         if ( (*dlip)->dli_ad == ad ) {
1133                                 snprintf( c->msg, sizeof( c->msg ),
1134                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1135                                         "URL attributeDescription \"%s\" already mapped.\n",
1136                                         ad->ad_cname.bv_val );
1137                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1138                                         c->log, c->msg, 0 );
1139                                 return 1;
1140                         }
1141
1142                         if ( member_ad != NULL && (*dlip)->dli_member_ad == member_ad ) {
1143                                 snprintf( c->msg, sizeof( c->msg ),
1144                                         "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1145                                         "member attributeDescription \"%s\" already mapped.\n",
1146                                         member_ad->ad_cname.bv_val );
1147                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1148                                         c->log, c->msg, 0 );
1149                                 return 1;
1150                         }
1151                 }
1152
1153                 if ( c->valx > 0 ) {
1154                         int     i;
1155
1156                         for ( i = 0, dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1157                                 i < c->valx; i++ )
1158                         {
1159                                 if ( *dlip == NULL ) {
1160                                         snprintf( c->msg, sizeof( c->msg ),
1161                                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1162                                                 "invalid index {%d}\n",
1163                                                 c->valx );
1164                                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1165                                                 c->log, c->msg, 0 );
1166                                         return 1;
1167                                 }
1168                                 dlip = &(*dlip)->dli_next;
1169                         }
1170                         dli_next = *dlip;
1171
1172                 } else {
1173                         for ( dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1174                                 *dlip; dlip = &(*dlip)->dli_next )
1175                                 /* goto last */;
1176                 }
1177
1178                 *dlip = (dynlist_info_t *)ch_calloc( 1, sizeof( dynlist_info_t ) );
1179
1180                 (*dlip)->dli_oc = oc;
1181                 (*dlip)->dli_ad = ad;
1182                 (*dlip)->dli_member_ad = member_ad;
1183                 (*dlip)->dli_next = dli_next;
1184
1185                 rc = dynlist_build_def_filter( *dlip );
1186
1187                 } break;
1188
1189         case DL_ATTRPAIR_COMPAT:
1190                 snprintf( c->msg, sizeof( c->msg ),
1191                         "warning: \"attrpair\" only supported for limited "
1192                         "backward compatibility with overlay \"dyngroup\"" );
1193                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->msg, 0 );
1194                 /* fallthru */
1195
1196         case DL_ATTRPAIR: {
1197                 dynlist_info_t          **dlip;
1198                 ObjectClass             *oc = NULL;
1199                 AttributeDescription    *ad = NULL,
1200                                         *member_ad = NULL;
1201                 const char              *text;
1202
1203                 oc = oc_find( "groupOfURLs" );
1204                 if ( oc == NULL ) {
1205                         snprintf( c->msg, sizeof( c->msg ),
1206                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1207                                 "unable to find default ObjectClass \"groupOfURLs\"" );
1208                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1209                                 c->log, c->msg, 0 );
1210                         return 1;
1211                 }
1212
1213                 rc = slap_str2ad( c->argv[ 1 ], &member_ad, &text );
1214                 if ( rc != LDAP_SUCCESS ) {
1215                         snprintf( c->msg, sizeof( c->msg ),
1216                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1217                                 "unable to find AttributeDescription \"%s\"",
1218                                 c->argv[ 1 ] );
1219                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1220                                 c->log, c->msg, 0 );
1221                         return 1;
1222                 }
1223
1224                 rc = slap_str2ad( c->argv[ 2 ], &ad, &text );
1225                 if ( rc != LDAP_SUCCESS ) {
1226                         snprintf( c->msg, sizeof( c->msg ),
1227                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1228                                 "unable to find AttributeDescription \"%s\"\n",
1229                                 c->argv[ 2 ] );
1230                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1231                                 c->log, c->msg, 0 );
1232                         return 1;
1233                 }
1234
1235                 if ( !is_at_subtype( ad->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
1236                         snprintf( c->msg, sizeof( c->msg ),
1237                                 "\"dynlist-attrset <oc> <URL-ad> [<member-ad>]\": "
1238                                 "AttributeDescription \"%s\" "
1239                                 "must be a subtype of \"labeledURI\"",
1240                                 c->argv[ 2 ] );
1241                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1242                                 c->log, c->msg, 0 );
1243                         return 1;
1244                 }
1245
1246                 for ( dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1247                         *dlip; dlip = &(*dlip)->dli_next )
1248                 {
1249                         /* The check on objectClass may be relaxed */
1250 #if 0
1251                         if ( (*dlip)->dli_oc == oc ) {
1252                                 snprintf( c->msg, sizeof( c->msg ),
1253                                         "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1254                                         "objectClass \"%s\" already mapped.\n",
1255                                         oc->soc_cname.bv_val );
1256                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1257                                         c->log, c->msg, 0 );
1258                                 return 1;
1259                         }
1260 #endif
1261
1262                         if ( (*dlip)->dli_ad == ad ) {
1263                                 snprintf( c->msg, sizeof( c->msg ),
1264                                         "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1265                                         "URL attributeDescription \"%s\" already mapped.\n",
1266                                         ad->ad_cname.bv_val );
1267                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1268                                         c->log, c->msg, 0 );
1269                                 return 1;
1270                         }
1271
1272                         if ( member_ad != NULL && (*dlip)->dli_member_ad == member_ad ) {
1273                                 snprintf( c->msg, sizeof( c->msg ),
1274                                         "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1275                                         "member attributeDescription \"%s\" already mapped.\n",
1276                                         member_ad->ad_cname.bv_val );
1277                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1278                                         c->log, c->msg, 0 );
1279                                 return 1;
1280                         }
1281                 }
1282
1283                 *dlip = (dynlist_info_t *)ch_calloc( 1, sizeof( dynlist_info_t ) );
1284
1285                 (*dlip)->dli_oc = oc;
1286                 (*dlip)->dli_ad = ad;
1287                 (*dlip)->dli_member_ad = member_ad;
1288
1289                 rc = dynlist_build_def_filter( *dlip );
1290
1291                 } break;
1292
1293         default:
1294                 rc = 1;
1295                 break;
1296         }
1297
1298         return rc;
1299 }
1300 #endif
1301
1302 static int
1303 dynlist_db_open(
1304         BackendDB       *be )
1305 {
1306         slap_overinst           *on = (slap_overinst *) be->bd_info;
1307         dynlist_info_t          *dli = (dynlist_info_t *)on->on_bi.bi_private;
1308         ObjectClass             *oc = NULL;
1309         AttributeDescription    *ad = NULL;
1310
1311         if ( dli == NULL ) {
1312                 dli = ch_calloc( 1, sizeof( dynlist_info_t ) );
1313                 on->on_bi.bi_private = (void *)dli;
1314         }
1315
1316         for ( ; dli; dli = dli->dli_next ) {
1317                 const char      *text;
1318                 int             rc;
1319
1320                 if ( dli->dli_oc == NULL ) {
1321                         if ( oc == NULL ) {
1322                                 oc = oc_find( "groupOfURLs" );
1323                                 if ( oc == NULL ) {
1324                                         Debug( LDAP_DEBUG_ANY, "dynlist_db_open: "
1325                                                 "unable to fetch objectClass \"groupOfURLs\".\n",
1326                                                 0, 0, 0 );
1327                                         return 1;
1328                                 }
1329                         }
1330
1331                         dli->dli_oc = oc;
1332                 }
1333
1334                 if ( dli->dli_ad == NULL ) {
1335                         if ( ad == NULL ) {
1336                                 rc = slap_str2ad( "memberURL", &ad, &text );
1337                                 if ( rc != LDAP_SUCCESS ) {
1338                                         Debug( LDAP_DEBUG_ANY, "dynlist_db_open: "
1339                                                 "unable to fetch attributeDescription \"memberURL\": %d (%s).\n",
1340                                                 rc, text, 0 );
1341                                         return 1;
1342                                 }
1343                         }
1344
1345                         dli->dli_ad = ad;
1346                 }
1347
1348                 rc = dynlist_build_def_filter( dli );
1349                 if ( rc != 0 ) {
1350                         return rc;
1351                 }
1352         }
1353
1354         return 0;
1355 }
1356
1357 static int
1358 dynlist_db_destroy(
1359         BackendDB       *be )
1360 {
1361         slap_overinst   *on = (slap_overinst *) be->bd_info;
1362
1363         if ( on->on_bi.bi_private ) {
1364                 dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private,
1365                                 *dli_next;
1366
1367                 for ( dli_next = dli; dli_next; dli = dli_next ) {
1368                         dli_next = dli->dli_next;
1369
1370                         ch_free( dli->dli_default_filter.bv_val );
1371                         ch_free( dli );
1372                 }
1373         }
1374
1375         return 0;
1376 }
1377
1378 static slap_overinst    dynlist = { { NULL } };
1379 #ifdef TAKEOVER_DYNGROUP
1380 static char             *obsolete_names[] = {
1381         "dyngroup",
1382         NULL
1383 };
1384 #endif
1385
1386 #if SLAPD_OVER_DYNLIST == SLAPD_MOD_DYNAMIC
1387 static
1388 #endif /* SLAPD_OVER_DYNLIST == SLAPD_MOD_DYNAMIC */
1389 int
1390 dynlist_initialize(void)
1391 {
1392 #ifndef OL_2_2_COMPAT
1393         int     rc = 0;
1394 #endif
1395
1396         dynlist.on_bi.bi_type = "dynlist";
1397
1398 #ifdef TAKEOVER_DYNGROUP
1399         /* makes dynlist incompatible with dyngroup */
1400         dynlist.on_bi.bi_obsolete_names = obsolete_names;
1401 #endif
1402
1403 #ifdef OL_2_2_COMPAT
1404         dynlist.on_bi.bi_db_config = dynlist_db_config;
1405 #else
1406         dynlist.on_bi.bi_db_config = config_generic_wrapper;
1407 #endif
1408         dynlist.on_bi.bi_db_open = dynlist_db_open;
1409         dynlist.on_bi.bi_db_destroy = dynlist_db_destroy;
1410
1411         dynlist.on_response = dynlist_response;
1412
1413 #ifndef OL_2_2_COMPAT
1414         dynlist.on_bi.bi_cf_ocs = dlocs;
1415
1416         rc = config_register_schema( dlcfg, dlocs );
1417         if ( rc ) {
1418                 return rc;
1419         }
1420 #endif
1421
1422         return overlay_register( &dynlist );
1423 }
1424
1425 #if SLAPD_OVER_DYNLIST == SLAPD_MOD_DYNAMIC
1426 int
1427 init_module( int argc, char *argv[] )
1428 {
1429         return dynlist_initialize();
1430 }
1431 #endif
1432
1433 #endif /* SLAPD_OVER_DYNLIST */