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 2003-2013 The OpenLDAP Foundation.
   6  * Portions Copyright 2004-2005 Pierangelo Masarati.
   7  * Portions Copyright 2008 Emmanuel Dreyfus.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted only as authorized by the OpenLDAP
  12  * Public License.
  13  *
  14  * A copy of this license is available in the file LICENSE in the
  15  * top-level directory of the distribution or, alternatively, at
  16  * <http://www.OpenLDAP.org/license.html>.
  17  */
  18 /* ACKNOWLEDGEMENTS:
  19  * This work was initially developed by Pierangelo Masarati
  20  * for SysNet s.n.c., for inclusion in OpenLDAP Software.
  21  */
  22
  23 #include "portable.h"
  24
  25 #ifdef SLAPD_OVER_DYNLIST
  26
  27 #if 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 #include "config.h"
  37 #include "lutil.h"
  38
  39 static AttributeDescription *ad_dgIdentity, *ad_dgAuthz;
  40
  41 typedef struct dynlist_map_t {
  42         AttributeDescription    *dlm_member_ad;
  43         AttributeDescription    *dlm_mapped_ad;
  44         struct dynlist_map_t    *dlm_next;
  45 } dynlist_map_t;
  46
  47 typedef struct dynlist_info_t {
  48         ObjectClass             *dli_oc;
  49         AttributeDescription    *dli_ad;
  50         struct dynlist_map_t    *dli_dlm;
  51         struct berval           dli_uri;
  52         LDAPURLDesc             *dli_lud;
  53         struct berval           dli_uri_nbase;
  54         Filter                  *dli_uri_filter;
  55         struct berval           dli_default_filter;
  56         struct dynlist_info_t   *dli_next;
  57 } dynlist_info_t;
  58
  59 #define DYNLIST_USAGE \
  60         "\"dynlist-attrset <oc> [uri] <URL-ad> [[<mapped-ad>:]<member-ad> ...]\": "
  61
  62 static dynlist_info_t *
  63 dynlist_is_dynlist_next( Operation *op, SlapReply *rs, dynlist_info_t *old_dli )
  64 {
  65         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
  66         dynlist_info_t  *dli;
  67
  68         Attribute       *a;
  69
  70         if ( old_dli == NULL ) {
  71                 dli = (dynlist_info_t *)on->on_bi.bi_private;
  72
  73         } else {
  74                 dli = old_dli->dli_next;
  75         }
  76
  77         a = attrs_find( rs->sr_entry->e_attrs, slap_schema.si_ad_objectClass );
  78         if ( a == NULL ) {
  79                 /* FIXME: objectClass must be present; for non-storage
  80                  * backends, like back-ldap, it needs to be added
  81                  * to the requested attributes */
  82                 return NULL;
  83         }
  84
  85         for ( ; dli; dli = dli->dli_next ) {
  86                 if ( dli->dli_lud != NULL ) {
  87                         /* check base and scope */
  88                         if ( !BER_BVISNULL( &dli->dli_uri_nbase )
  89                                 && !dnIsSuffixScope( &rs->sr_entry->e_nname,
  90                                         &dli->dli_uri_nbase,
  91                                         dli->dli_lud->lud_scope ) )
  92                         {
  93                                 continue;
  94                         }
  95
  96                         /* check filter */
  97                         if ( dli->dli_uri_filter && test_filter( op, rs->sr_entry, dli->dli_uri_filter ) != LDAP_COMPARE_TRUE ) {
  98                                 continue;
  99                         }
 100                 }
 101
 102                 if ( attr_valfind( a,
 103                                 SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
 104                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
 105                                 &dli->dli_oc->soc_cname, NULL,
 106                                 op->o_tmpmemctx ) == 0 )
 107                 {
 108                         return dli;
 109                 }
 110         }
 111
 112         return NULL;
 113 }
 114
 115 static int
 116 dynlist_make_filter( Operation *op, Entry *e, const char *url, struct berval *oldf, struct berval *newf )
 117 {
 118         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 119         dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private;
 120
 121         char            *ptr;
 122         int             needBrackets = 0;
 123
 124         assert( oldf != NULL );
 125         assert( newf != NULL );
 126         assert( !BER_BVISNULL( oldf ) );
 127         assert( !BER_BVISEMPTY( oldf ) );
 128
 129         if ( oldf->bv_val[0] != '(' ) {
 130                 Debug( LDAP_DEBUG_ANY, "%s: dynlist, DN=\"%s\": missing brackets in URI=\"%s\" filter\n",
 131                         op->o_log_prefix, e->e_name.bv_val, url );
 132                 needBrackets = 2;
 133         }
 134
 135         newf->bv_len = STRLENOF( "(&(!(objectClass=" "))" ")" )
 136                 + dli->dli_oc->soc_cname.bv_len + oldf->bv_len + needBrackets;
 137         newf->bv_val = op->o_tmpalloc( newf->bv_len + 1, op->o_tmpmemctx );
 138         if ( newf->bv_val == NULL ) {
 139                 return -1;
 140         }
 141         ptr = lutil_strcopy( newf->bv_val, "(&(!(objectClass=" );
 142         ptr = lutil_strcopy( ptr, dli->dli_oc->soc_cname.bv_val );
 143         ptr = lutil_strcopy( ptr, "))" );
 144         if ( needBrackets ) *ptr++ = '(';
 145         ptr = lutil_strcopy( ptr, oldf->bv_val );
 146         if ( needBrackets ) *ptr++ = ')';
 147         ptr = lutil_strcopy( ptr, ")" );
 148         newf->bv_len = ptr - newf->bv_val;
 149
 150         return 0;
 151 }
 152
 153 /* dynlist_sc_update() callback info set by dynlist_prepare_entry() */
 154 typedef struct dynlist_sc_t {
 155         dynlist_info_t    *dlc_dli;
 156         Entry           *dlc_e;
 157 } dynlist_sc_t;
 158
 159 static int
 160 dynlist_sc_update( Operation *op, SlapReply *rs )
 161 {
 162         Entry                   *e;
 163         Attribute               *a;
 164         int                     opattrs,
 165                                 userattrs;
 166         AccessControlState      acl_state = ACL_STATE_INIT;
 167
 168         dynlist_sc_t            *dlc;
 169         dynlist_map_t           *dlm;
 170
 171         if ( rs->sr_type != REP_SEARCH ) {
 172                 return 0;
 173         }
 174
 175         dlc = (dynlist_sc_t *)op->o_callback->sc_private;
 176         e = dlc->dlc_e;
 177
 178         assert( e != NULL );
 179         assert( rs->sr_entry != NULL );
 180
 181         /* test access to entry */
 182         if ( !access_allowed( op, rs->sr_entry, slap_schema.si_ad_entry,
 183                                 NULL, ACL_READ, NULL ) )
 184         {
 185                 goto done;
 186         }
 187
 188         /* if there is only one member_ad, and it's not mapped,
 189          * consider it as old-style member listing */
 190         dlm = dlc->dlc_dli->dli_dlm;
 191         if ( dlm && dlm->dlm_mapped_ad == NULL && dlm->dlm_next == NULL ) {
 192                 /* if access allowed, try to add values, emulating permissive
 193                  * control to silently ignore duplicates */
 194                 if ( access_allowed( op, rs->sr_entry, slap_schema.si_ad_entry,
 195                                         NULL, ACL_READ, NULL ) )
 196                 {
 197                         Modification    mod;
 198                         const char      *text = NULL;
 199                         char            textbuf[1024];
 200                         struct berval   vals[ 2 ], nvals[ 2 ];
 201
 202                         vals[ 0 ] = rs->sr_entry->e_name;
 203                         BER_BVZERO( &vals[ 1 ] );
 204                         nvals[ 0 ] = rs->sr_entry->e_nname;
 205                         BER_BVZERO( &nvals[ 1 ] );
 206
 207                         mod.sm_op = LDAP_MOD_ADD;
 208                         mod.sm_desc = dlm->dlm_member_ad;
 209                         mod.sm_type = dlm->dlm_member_ad->ad_cname;
 210                         mod.sm_values = vals;
 211                         mod.sm_nvalues = nvals;
 212                         mod.sm_numvals = 1;
 213
 214                         (void)modify_add_values( e, &mod, /* permissive */ 1,
 215                                         &text, textbuf, sizeof( textbuf ) );
 216                 }
 217
 218                 goto done;
 219         }
 220
 221         opattrs = SLAP_OPATTRS( rs->sr_attr_flags );
 222         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 223
 224         for ( a = rs->sr_entry->e_attrs; a != NULL; a = a->a_next ) {
 225                 BerVarray       vals, nvals = NULL;
 226                 int             i, j,
 227                                 is_oc = a->a_desc == slap_schema.si_ad_objectClass;
 228
 229                 /* if attribute is not requested, skip it */
 230                 if ( rs->sr_attrs == NULL ) {
 231                         if ( is_at_operational( a->a_desc->ad_type ) ) {
 232                                 continue;
 233                         }
 234
 235                 } else {
 236                         if ( is_at_operational( a->a_desc->ad_type ) ) {
 237                                 if ( !opattrs && !ad_inlist( a->a_desc, rs->sr_attrs ) )
 238                                 {
 239                                         continue;
 240                                 }
 241
 242                         } else {
 243                                 if ( !userattrs && !ad_inlist( a->a_desc, rs->sr_attrs ) )
 244                                 {
 245                                         continue;
 246                                 }
 247                         }
 248                 }
 249
 250                 /* test access to attribute */
 251                 if ( op->ors_attrsonly ) {
 252                         if ( !access_allowed( op, rs->sr_entry, a->a_desc, NULL,
 253                                                 ACL_READ, &acl_state ) )
 254                         {
 255                                 continue;
 256                         }
 257                 }
 258
 259                 /* single-value check: keep first only */
 260                 if ( is_at_single_value( a->a_desc->ad_type ) ) {
 261                         if ( attr_find( e->e_attrs, a->a_desc ) != NULL ) {
 262                                 continue;
 263                         }
 264                 }
 265
 266                 /* test access to attribute */
 267                 i = a->a_numvals;
 268
 269                 vals = op->o_tmpalloc( ( i + 1 ) * sizeof( struct berval ), op->o_tmpmemctx );
 270                 if ( a->a_nvals != a->a_vals ) {
 271                         nvals = op->o_tmpalloc( ( i + 1 ) * sizeof( struct berval ), op->o_tmpmemctx );
 272                 }
 273
 274                 for ( i = 0, j = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ ) {
 275                         if ( is_oc ) {
 276                                 ObjectClass     *soc = oc_bvfind( &a->a_vals[i] );
 277
 278                                 if ( soc->soc_kind == LDAP_SCHEMA_STRUCTURAL ) {
 279                                         continue;
 280                                 }
 281                         }
 282
 283                         if ( access_allowed( op, rs->sr_entry, a->a_desc,
 284                                                 &a->a_nvals[i], ACL_READ, &acl_state ) )
 285                         {
 286                                 vals[j] = a->a_vals[i];
 287                                 if ( nvals ) {
 288                                         nvals[j] = a->a_nvals[i];
 289                                 }
 290                                 j++;
 291                         }
 292                 }
 293
 294                 /* if access allowed, try to add values, emulating permissive
 295                  * control to silently ignore duplicates */
 296                 if ( j != 0 ) {
 297                         Modification    mod;
 298                         const char      *text = NULL;
 299                         char            textbuf[1024];
 300                         dynlist_map_t   *dlm;
 301                         AttributeDescription *ad;
 302
 303                         BER_BVZERO( &vals[j] );
 304                         if ( nvals ) {
 305                                 BER_BVZERO( &nvals[j] );
 306                         }
 307
 308                         ad = a->a_desc;
 309                         for ( dlm = dlc->dlc_dli->dli_dlm; dlm; dlm = dlm->dlm_next ) {
 310                                 if ( dlm->dlm_member_ad == a->a_desc ) {
 311                                         if ( dlm->dlm_mapped_ad ) {
 312                                                 ad = dlm->dlm_mapped_ad;
 313                                         }
 314                                         break;
 315                                 }
 316                         }
 317
 318                         mod.sm_op = LDAP_MOD_ADD;
 319                         mod.sm_desc = ad;
 320                         mod.sm_type = ad->ad_cname;
 321                         mod.sm_values = vals;
 322                         mod.sm_nvalues = nvals;
 323                         mod.sm_numvals = j;
 324
 325                         (void)modify_add_values( e, &mod, /* permissive */ 1,
 326                                         &text, textbuf, sizeof( textbuf ) );
 327                 }
 328
 329                 op->o_tmpfree( vals, op->o_tmpmemctx );
 330                 if ( nvals ) {
 331                         op->o_tmpfree( nvals, op->o_tmpmemctx );
 332                 }
 333         }
 334
 335 done:;
 336         if ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) {
 337                 entry_free( rs->sr_entry );
 338                 rs->sr_entry = NULL;
 339                 rs->sr_flags &= ~REP_ENTRY_MASK;
 340         }
 341
 342         return 0;
 343 }
 344
 345 static int
 346 dynlist_prepare_entry( Operation *op, SlapReply *rs, dynlist_info_t *dli )
 347 {
 348         Attribute       *a, *id = NULL;
 349         slap_callback   cb;
 350         Operation       o = *op;
 351         struct berval   *url;
 352         Entry           *e;
 353         int             opattrs,
 354                         userattrs;
 355         dynlist_sc_t    dlc = { 0 };
 356         dynlist_map_t   *dlm;
 357
 358         a = attrs_find( rs->sr_entry->e_attrs, dli->dli_ad );
 359         if ( a == NULL ) {
 360                 /* FIXME: error? */
 361                 return SLAP_CB_CONTINUE;
 362         }
 363
 364         opattrs = SLAP_OPATTRS( rs->sr_attr_flags );
 365         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 366
 367         /* Don't generate member list if it wasn't requested */
 368         for ( dlm = dli->dli_dlm; dlm; dlm = dlm->dlm_next ) {
 369                 AttributeDescription *ad = dlm->dlm_mapped_ad ? dlm->dlm_mapped_ad : dlm->dlm_member_ad;
 370                 if ( userattrs || ad_inlist( ad, rs->sr_attrs ) )
 371                         break;
 372         }
 373         if ( dli->dli_dlm && !dlm )
 374                 return SLAP_CB_CONTINUE;
 375
 376         if ( ad_dgIdentity && ( id = attrs_find( rs->sr_entry->e_attrs, ad_dgIdentity ))) {
 377                 Attribute *authz = NULL;
 378
 379                 /* if not rootdn and dgAuthz is present,
 380                  * check if user can be authorized as dgIdentity */
 381                 if ( ad_dgAuthz && !BER_BVISEMPTY( &id->a_nvals[0] ) && !be_isroot( op )
 382                         && ( authz = attrs_find( rs->sr_entry->e_attrs, ad_dgAuthz ) ) )
 383                 {
 384                         if ( slap_sasl_matches( op, authz->a_nvals,
 385                                 &o.o_ndn, &o.o_ndn ) != LDAP_SUCCESS )
 386                         {
 387                                 return SLAP_CB_CONTINUE;
 388                         }
 389                 }
 390
 391                 o.o_dn = id->a_vals[0];
 392                 o.o_ndn = id->a_nvals[0];
 393                 o.o_groups = NULL;
 394         }
 395
 396         e = rs->sr_entry;
 397         /* ensure e is modifiable, but do not replace
 398          * sr_entry yet since we have pointers into it */
 399         if ( !( rs->sr_flags & REP_ENTRY_MODIFIABLE ) ) {
 400                 e = entry_dup( rs->sr_entry );
 401         }
 402
 403         dlc.dlc_e = e;
 404         dlc.dlc_dli = dli;
 405         cb.sc_private = &dlc;
 406         cb.sc_response = dynlist_sc_update;
 407         cb.sc_cleanup = NULL;
 408         cb.sc_next = NULL;
 409
 410         o.o_callback = &cb;
 411         o.ors_deref = LDAP_DEREF_NEVER;
 412         o.ors_limit = NULL;
 413         o.ors_tlimit = SLAP_NO_LIMIT;
 414         o.ors_slimit = SLAP_NO_LIMIT;
 415
 416         for ( url = a->a_nvals; !BER_BVISNULL( url ); url++ ) {
 417                 LDAPURLDesc     *lud = NULL;
 418                 int             i, j;
 419                 struct berval   dn;
 420                 int             rc;
 421
 422                 BER_BVZERO( &o.o_req_dn );
 423                 BER_BVZERO( &o.o_req_ndn );
 424                 o.ors_filter = NULL;
 425                 o.ors_attrs = NULL;
 426                 BER_BVZERO( &o.ors_filterstr );
 427
 428                 if ( ldap_url_parse( url->bv_val, &lud ) != LDAP_URL_SUCCESS ) {
 429                         /* FIXME: error? */
 430                         continue;
 431                 }
 432
 433                 if ( lud->lud_host != NULL ) {
 434                         /* FIXME: host not allowed; reject as illegal? */
 435                         Debug( LDAP_DEBUG_ANY, "dynlist_prepare_entry(\"%s\"): "
 436                                 "illegal URI \"%s\"\n",
 437                                 e->e_name.bv_val, url->bv_val, 0 );
 438                         goto cleanup;
 439                 }
 440
 441                 if ( lud->lud_dn == NULL ) {
 442                         /* note that an empty base is not honored in terms
 443                          * of defaultSearchBase, because select_backend()
 444                          * is not aware of the defaultSearchBase option;
 445                          * this can be useful in case of a database serving
 446                          * the empty suffix */
 447                         BER_BVSTR( &dn, "" );
 448
 449                 } else {
 450                         ber_str2bv( lud->lud_dn, 0, 0, &dn );
 451                 }
 452                 rc = dnPrettyNormal( NULL, &dn, &o.o_req_dn, &o.o_req_ndn, op->o_tmpmemctx );
 453                 if ( rc != LDAP_SUCCESS ) {
 454                         /* FIXME: error? */
 455                         goto cleanup;
 456                 }
 457                 o.ors_scope = lud->lud_scope;
 458
 459                 for ( dlm = dli->dli_dlm; dlm; dlm = dlm->dlm_next ) {
 460                         if ( dlm->dlm_mapped_ad != NULL ) {
 461                                 break;
 462                         }
 463                 }
 464
 465                 if ( dli->dli_dlm && !dlm ) {
 466                         /* if ( lud->lud_attrs != NULL ),
 467                          * the URL should be ignored */
 468                         o.ors_attrs = slap_anlist_no_attrs;
 469
 470                 } else if ( lud->lud_attrs == NULL ) {
 471                         o.ors_attrs = rs->sr_attrs;
 472
 473                 } else {
 474                         for ( i = 0; lud->lud_attrs[i]; i++)
 475                                 /* just count */ ;
 476
 477                         o.ors_attrs = op->o_tmpcalloc( i + 1, sizeof( AttributeName ), op->o_tmpmemctx );
 478                         for ( i = 0, j = 0; lud->lud_attrs[i]; i++) {
 479                                 const char      *text = NULL;
 480
 481                                 ber_str2bv( lud->lud_attrs[i], 0, 0, &o.ors_attrs[j].an_name );
 482                                 o.ors_attrs[j].an_desc = NULL;
 483                                 (void)slap_bv2ad( &o.ors_attrs[j].an_name, &o.ors_attrs[j].an_desc, &text );
 484                                 /* FIXME: ignore errors... */
 485
 486                                 if ( rs->sr_attrs == NULL ) {
 487                                         if ( o.ors_attrs[j].an_desc != NULL &&
 488                                                         is_at_operational( o.ors_attrs[j].an_desc->ad_type ) )
 489                                         {
 490                                                 continue;
 491                                         }
 492
 493                                 } else {
 494                                         if ( o.ors_attrs[j].an_desc != NULL &&
 495                                                         is_at_operational( o.ors_attrs[j].an_desc->ad_type ) )
 496                                         {
 497                                                 if ( !opattrs ) {
 498                                                         continue;
 499                                                 }
 500
 501                                                 if ( !ad_inlist( o.ors_attrs[j].an_desc, rs->sr_attrs ) ) {
 502                                                         /* lookup if mapped -- linear search,
 503                                                          * not very efficient unless list
 504                                                          * is very short */
 505                                                         for ( dlm = dli->dli_dlm; dlm; dlm = dlm->dlm_next ) {
 506                                                                 if ( dlm->dlm_member_ad == o.ors_attrs[j].an_desc ) {
 507                                                                         break;
 508                                                                 }
 509                                                         }
 510
 511                                                         if ( dlm == NULL ) {
 512                                                                 continue;
 513                                                         }
 514                                                 }
 515
 516                                         } else {
 517                                                 if ( !userattrs &&
 518                                                                 o.ors_attrs[j].an_desc != NULL &&
 519                                                                 !ad_inlist( o.ors_attrs[j].an_desc, rs->sr_attrs ) )
 520                                                 {
 521                                                         /* lookup if mapped -- linear search,
 522                                                          * not very efficient unless list
 523                                                          * is very short */
 524                                                         for ( dlm = dli->dli_dlm; dlm; dlm = dlm->dlm_next ) {
 525                                                                 if ( dlm->dlm_member_ad == o.ors_attrs[j].an_desc ) {
 526                                                                         break;
 527                                                                 }
 528                                                         }
 529
 530                                                         if ( dlm == NULL ) {
 531                                                                 continue;
 532                                                         }
 533                                                 }
 534                                         }
 535                                 }
 536
 537                                 j++;
 538                         }
 539
 540                         if ( j == 0 ) {
 541                                 goto cleanup;
 542                         }
 543
 544                         BER_BVZERO( &o.ors_attrs[j].an_name );
 545                 }
 546
 547                 if ( lud->lud_filter == NULL ) {
 548                         ber_dupbv_x( &o.ors_filterstr,
 549                                         &dli->dli_default_filter, op->o_tmpmemctx );
 550
 551                 } else {
 552                         struct berval   flt;
 553                         ber_str2bv( lud->lud_filter, 0, 0, &flt );
 554                         if ( dynlist_make_filter( op, rs->sr_entry, url->bv_val, &flt, &o.ors_filterstr ) ) {
 555                                 /* error */
 556                                 goto cleanup;
 557                         }
 558                 }
 559                 o.ors_filter = str2filter_x( op, o.ors_filterstr.bv_val );
 560                 if ( o.ors_filter == NULL ) {
 561                         goto cleanup;
 562                 }
 563
 564                 o.o_bd = select_backend( &o.o_req_ndn, 1 );
 565                 if ( o.o_bd && o.o_bd->be_search ) {
 566                         SlapReply       r = { REP_SEARCH };
 567                         r.sr_attr_flags = slap_attr_flags( o.ors_attrs );
 568                         (void)o.o_bd->be_search( &o, &r );
 569                 }
 570
 571 cleanup:;
 572                 if ( id ) {
 573                         slap_op_groups_free( &o );
 574                 }
 575                 if ( o.ors_filter ) {
 576                         filter_free_x( &o, o.ors_filter, 1 );
 577                 }
 578                 if ( o.ors_attrs && o.ors_attrs != rs->sr_attrs
 579                                 && o.ors_attrs != slap_anlist_no_attrs )
 580                 {
 581                         op->o_tmpfree( o.ors_attrs, op->o_tmpmemctx );
 582                 }
 583                 if ( !BER_BVISNULL( &o.o_req_dn ) ) {
 584                         op->o_tmpfree( o.o_req_dn.bv_val, op->o_tmpmemctx );
 585                 }
 586                 if ( !BER_BVISNULL( &o.o_req_ndn ) ) {
 587                         op->o_tmpfree( o.o_req_ndn.bv_val, op->o_tmpmemctx );
 588                 }
 589                 assert( BER_BVISNULL( &o.ors_filterstr )
 590                         || o.ors_filterstr.bv_val != lud->lud_filter );
 591                 op->o_tmpfree( o.ors_filterstr.bv_val, op->o_tmpmemctx );
 592                 ldap_free_urldesc( lud );
 593         }
 594
 595         if ( e != rs->sr_entry ) {
 596                 rs_replace_entry( op, rs, (slap_overinst *)op->o_bd->bd_info, e );
 597                 rs->sr_flags |= REP_ENTRY_MODIFIABLE | REP_ENTRY_MUSTBEFREED;
 598         }
 599
 600         return SLAP_CB_CONTINUE;
 601 }
 602
 603 /* dynlist_sc_compare_entry() callback set by dynlist_compare() */
 604 typedef struct dynlist_cc_t {
 605         slap_callback dc_cb;
 606 #       define dc_ava   dc_cb.sc_private /* attr:val to compare with */
 607         int *dc_res;
 608 } dynlist_cc_t;
 609
 610 static int
 611 dynlist_sc_compare_entry( Operation *op, SlapReply *rs )
 612 {
 613         if ( rs->sr_type == REP_SEARCH && rs->sr_entry != NULL ) {
 614                 dynlist_cc_t *dc = (dynlist_cc_t *)op->o_callback;
 615                 AttributeAssertion *ava = dc->dc_ava;
 616                 Attribute *a = attrs_find( rs->sr_entry->e_attrs, ava->aa_desc );
 617
 618                 if ( a != NULL ) {
 619                         while ( LDAP_SUCCESS != attr_valfind( a,
 620                                         SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
 621                                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
 622                                         &ava->aa_value, NULL, op->o_tmpmemctx )
 623                                 && (a = attrs_find( a->a_next, ava->aa_desc )) != NULL )
 624                                 ;
 625                         *dc->dc_res = a ? LDAP_COMPARE_TRUE : LDAP_COMPARE_FALSE;
 626                 }
 627         }
 628
 629         return 0;
 630 }
 631
 632 static int
 633 dynlist_compare( Operation *op, SlapReply *rs )
 634 {
 635         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 636         dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private;
 637         Operation o = *op;
 638         Entry *e = NULL;
 639         dynlist_map_t *dlm;
 640         BackendDB *be;
 641
 642         for ( ; dli != NULL; dli = dli->dli_next ) {
 643                 for ( dlm = dli->dli_dlm; dlm; dlm = dlm->dlm_next )
 644                         if ( op->oq_compare.rs_ava->aa_desc == dlm->dlm_member_ad )
 645                                 break;
 646
 647                 if ( dlm ) {
 648                         /* This compare is for one of the attributes we're
 649                          * interested in. We'll use slapd's existing dyngroup
 650                          * evaluator to get the answer we want.
 651                          */
 652                         BerVarray id = NULL, authz = NULL;
 653
 654                         o.o_do_not_cache = 1;
 655
 656                         if ( ad_dgIdentity && backend_attribute( &o, NULL, &o.o_req_ndn,
 657                                 ad_dgIdentity, &id, ACL_READ ) == LDAP_SUCCESS )
 658                         {
 659                                 /* if not rootdn and dgAuthz is present,
 660                                  * check if user can be authorized as dgIdentity */
 661                                 if ( ad_dgAuthz && !BER_BVISEMPTY( id ) && !be_isroot( op )
 662                                         && backend_attribute( &o, NULL, &o.o_req_ndn,
 663                                                 ad_dgAuthz, &authz, ACL_READ ) == LDAP_SUCCESS )
 664                                 {
 665
 666                                         rs->sr_err = slap_sasl_matches( op, authz,
 667                                                 &o.o_ndn, &o.o_ndn );
 668                                         ber_bvarray_free_x( authz, op->o_tmpmemctx );
 669                                         if ( rs->sr_err != LDAP_SUCCESS ) {
 670                                                 goto done;
 671                                         }
 672                                 }
 673
 674                                 o.o_dn = *id;
 675                                 o.o_ndn = *id;
 676                                 o.o_groups = NULL; /* authz changed, invalidate cached groups */
 677                         }
 678
 679                         rs->sr_err = backend_group( &o, NULL, &o.o_req_ndn,
 680                                 &o.oq_compare.rs_ava->aa_value, dli->dli_oc, dli->dli_ad );
 681                         switch ( rs->sr_err ) {
 682                         case LDAP_SUCCESS:
 683                                 rs->sr_err = LDAP_COMPARE_TRUE;
 684                                 break;
 685
 686                         case LDAP_NO_SUCH_OBJECT:
 687                                 /* NOTE: backend_group() returns noSuchObject
 688                                  * if op_ndn does not exist; however, since
 689                                  * dynamic list expansion means that the
 690                                  * member attribute is virtually present, the
 691                                  * non-existence of the asserted value implies
 692                                  * the assertion is FALSE rather than
 693                                  * UNDEFINED */
 694                                 rs->sr_err = LDAP_COMPARE_FALSE;
 695                                 break;
 696                         }
 697
 698 done:;
 699                         if ( id ) ber_bvarray_free_x( id, o.o_tmpmemctx );
 700
 701                         return SLAP_CB_CONTINUE;
 702                 }
 703         }
 704
 705         be = select_backend( &o.o_req_ndn, 1 );
 706         if ( !be || !be->be_search ) {
 707                 return SLAP_CB_CONTINUE;
 708         }
 709
 710         if ( overlay_entry_get_ov( &o, &o.o_req_ndn, NULL, NULL, 0, &e, on ) !=
 711                 LDAP_SUCCESS || e == NULL )
 712         {
 713                 return SLAP_CB_CONTINUE;
 714         }
 715
 716         /* check for dynlist objectClass; done if not found */
 717         dli = (dynlist_info_t *)on->on_bi.bi_private;
 718         while ( dli != NULL && !is_entry_objectclass_or_sub( e, dli->dli_oc ) ) {
 719                 dli = dli->dli_next;
 720         }
 721         if ( dli == NULL ) {
 722                 goto release;
 723         }
 724
 725         if ( ad_dgIdentity ) {
 726                 Attribute *id = attrs_find( e->e_attrs, ad_dgIdentity );
 727                 if ( id ) {
 728                         Attribute *authz;
 729
 730                         /* if not rootdn and dgAuthz is present,
 731                          * check if user can be authorized as dgIdentity */
 732                         if ( ad_dgAuthz && !BER_BVISEMPTY( &id->a_nvals[0] ) && !be_isroot( op )
 733                                 && ( authz = attrs_find( e->e_attrs, ad_dgAuthz ) ) )
 734                         {
 735                                 if ( slap_sasl_matches( op, authz->a_nvals,
 736                                         &o.o_ndn, &o.o_ndn ) != LDAP_SUCCESS )
 737                                 {
 738                                         goto release;
 739                                 }
 740                         }
 741
 742                         o.o_dn = id->a_vals[0];
 743                         o.o_ndn = id->a_nvals[0];
 744                         o.o_groups = NULL;
 745                 }
 746         }
 747
 748         /* generate dynamic list with dynlist_response() and compare */
 749         {
 750                 SlapReply       r = { REP_SEARCH };
 751                 dynlist_cc_t    dc = { { 0, dynlist_sc_compare_entry, 0, 0 }, 0 };
 752                 AttributeName   an[2];
 753
 754                 dc.dc_ava = op->orc_ava;
 755                 dc.dc_res = &rs->sr_err;
 756                 o.o_callback = (slap_callback *) &dc;
 757
 758                 o.o_tag = LDAP_REQ_SEARCH;
 759                 o.ors_limit = NULL;
 760                 o.ors_tlimit = SLAP_NO_LIMIT;
 761                 o.ors_slimit = SLAP_NO_LIMIT;
 762
 763                 o.ors_filterstr = *slap_filterstr_objectClass_pres;
 764                 o.ors_filter = (Filter *) slap_filter_objectClass_pres;
 765
 766                 o.ors_scope = LDAP_SCOPE_BASE;
 767                 o.ors_deref = LDAP_DEREF_NEVER;
 768                 an[0].an_name = op->orc_ava->aa_desc->ad_cname;
 769                 an[0].an_desc = op->orc_ava->aa_desc;
 770                 BER_BVZERO( &an[1].an_name );
 771                 o.ors_attrs = an;
 772                 o.ors_attrsonly = 0;
 773
 774                 o.o_acl_priv = ACL_COMPARE;
 775
 776                 o.o_bd = be;
 777                 (void)be->be_search( &o, &r );
 778
 779                 if ( o.o_dn.bv_val != op->o_dn.bv_val ) {
 780                         slap_op_groups_free( &o );
 781                 }
 782         }
 783
 784 release:;
 785         if ( e != NULL ) {
 786                 overlay_entry_release_ov( &o, e, 0, on );
 787         }
 788
 789         return SLAP_CB_CONTINUE;
 790 }
 791
 792 static int
 793 dynlist_response( Operation *op, SlapReply *rs )
 794 {
 795         switch ( op->o_tag ) {
 796         case LDAP_REQ_SEARCH:
 797                 if ( rs->sr_type == REP_SEARCH && !get_manageDSAit( op ) )
 798                 {
 799                         int     rc = SLAP_CB_CONTINUE;
 800                         dynlist_info_t  *dli = NULL;
 801
 802                         while ( (dli = dynlist_is_dynlist_next( op, rs, dli )) != NULL ) {
 803                                 rc = dynlist_prepare_entry( op, rs, dli );
 804                         }
 805
 806                         return rc;
 807                 }
 808                 break;
 809
 810         case LDAP_REQ_COMPARE:
 811                 switch ( rs->sr_err ) {
 812                 /* NOTE: we waste a few cycles running the dynamic list
 813                  * also when the result is FALSE, which occurs if the
 814                  * dynamic entry itself contains the AVA attribute  */
 815                 /* FIXME: this approach is less than optimal; a dedicated
 816                  * compare op should be implemented, that fetches the
 817                  * entry, checks if it has the appropriate objectClass
 818                  * and, in case, runs a compare thru all the URIs,
 819                  * stopping at the first positive occurrence; see ITS#3756 */
 820                 case LDAP_COMPARE_FALSE:
 821                 case LDAP_NO_SUCH_ATTRIBUTE:
 822                         return dynlist_compare( op, rs );
 823                 }
 824                 break;
 825         }
 826
 827         return SLAP_CB_CONTINUE;
 828 }
 829
 830 static int
 831 dynlist_build_def_filter( dynlist_info_t *dli )
 832 {
 833         char    *ptr;
 834
 835         dli->dli_default_filter.bv_len = STRLENOF( "(!(objectClass=" "))" )
 836                 + dli->dli_oc->soc_cname.bv_len;
 837         dli->dli_default_filter.bv_val = ch_malloc( dli->dli_default_filter.bv_len + 1 );
 838         if ( dli->dli_default_filter.bv_val == NULL ) {
 839                 Debug( LDAP_DEBUG_ANY, "dynlist_db_open: malloc failed.\n",
 840                         0, 0, 0 );
 841                 return -1;
 842         }
 843
 844         ptr = lutil_strcopy( dli->dli_default_filter.bv_val, "(!(objectClass=" );
 845         ptr = lutil_strcopy( ptr, dli->dli_oc->soc_cname.bv_val );
 846         ptr = lutil_strcopy( ptr, "))" );
 847
 848         assert( ptr == &dli->dli_default_filter.bv_val[dli->dli_default_filter.bv_len] );
 849
 850         return 0;
 851 }
 852
 853 enum {
 854         DL_ATTRSET = 1,
 855         DL_ATTRPAIR,
 856         DL_ATTRPAIR_COMPAT,
 857         DL_LAST
 858 };
 859
 860 static ConfigDriver     dl_cfgen;
 861
 862 /* XXXmanu 255 is the maximum arguments we allow. Can we go beyond? */
 863 static ConfigTable dlcfg[] = {
 864         { "dynlist-attrset", "group-oc> [uri] <URL-ad> <[mapped:]member-ad> [...]",
 865                 3, 0, 0, ARG_MAGIC|DL_ATTRSET, dl_cfgen,
 866                 "( OLcfgOvAt:8.1 NAME 'olcDlAttrSet' "
 867                         "DESC 'Dynamic list: <group objectClass>, <URL attributeDescription>, <member attributeDescription>' "
 868                         "EQUALITY caseIgnoreMatch "
 869                         "SYNTAX OMsDirectoryString "
 870                         "X-ORDERED 'VALUES' )",
 871                         NULL, NULL },
 872         { "dynlist-attrpair", "member-ad> <URL-ad",
 873                 3, 3, 0, ARG_MAGIC|DL_ATTRPAIR, dl_cfgen,
 874                         NULL, NULL, NULL },
 875 #ifdef TAKEOVER_DYNGROUP
 876         { "attrpair", "member-ad> <URL-ad",
 877                 3, 3, 0, ARG_MAGIC|DL_ATTRPAIR_COMPAT, dl_cfgen,
 878                         NULL, NULL, NULL },
 879 #endif
 880         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
 881 };
 882
 883 static ConfigOCs dlocs[] = {
 884         { "( OLcfgOvOc:8.1 "
 885                 "NAME 'olcDynamicList' "
 886                 "DESC 'Dynamic list configuration' "
 887                 "SUP olcOverlayConfig "
 888                 "MAY olcDLattrSet )",
 889                 Cft_Overlay, dlcfg, NULL, NULL },
 890         { NULL, 0, NULL }
 891 };
 892
 893 static int
 894 dl_cfgen( ConfigArgs *c )
 895 {
 896         slap_overinst   *on = (slap_overinst *)c->bi;
 897         dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private;
 898
 899         int             rc = 0, i;
 900
 901         if ( c->op == SLAP_CONFIG_EMIT ) {
 902                 switch( c->type ) {
 903                 case DL_ATTRSET:
 904                         for ( i = 0; dli; i++, dli = dli->dli_next ) {
 905                                 struct berval   bv;
 906                                 char            *ptr = c->cr_msg;
 907                                 dynlist_map_t   *dlm;
 908
 909                                 assert( dli->dli_oc != NULL );
 910                                 assert( dli->dli_ad != NULL );
 911
 912                                 /* FIXME: check buffer overflow! */
 913                                 ptr += snprintf( c->cr_msg, sizeof( c->cr_msg ),
 914                                         SLAP_X_ORDERED_FMT "%s", i,
 915                                         dli->dli_oc->soc_cname.bv_val );
 916
 917                                 if ( !BER_BVISNULL( &dli->dli_uri ) ) {
 918                                         *ptr++ = ' ';
 919                                         *ptr++ = '"';
 920                                         ptr = lutil_strncopy( ptr, dli->dli_uri.bv_val,
 921                                                 dli->dli_uri.bv_len );
 922                                         *ptr++ = '"';
 923                                 }
 924
 925                                 *ptr++ = ' ';
 926                                 ptr = lutil_strncopy( ptr, dli->dli_ad->ad_cname.bv_val,
 927                                         dli->dli_ad->ad_cname.bv_len );
 928
 929                                 for ( dlm = dli->dli_dlm; dlm; dlm = dlm->dlm_next ) {
 930                                         ptr[ 0 ] = ' ';
 931                                         ptr++;
 932                                         if ( dlm->dlm_mapped_ad ) {
 933                                                 ptr = lutil_strcopy( ptr, dlm->dlm_mapped_ad->ad_cname.bv_val );
 934                                                 ptr[ 0 ] = ':';
 935                                                 ptr++;
 936                                         }
 937
 938                                         ptr = lutil_strcopy( ptr, dlm->dlm_member_ad->ad_cname.bv_val );
 939                                 }
 940
 941                                 bv.bv_val = c->cr_msg;
 942                                 bv.bv_len = ptr - bv.bv_val;
 943                                 value_add_one( &c->rvalue_vals, &bv );
 944                         }
 945                         break;
 946
 947                 case DL_ATTRPAIR_COMPAT:
 948                 case DL_ATTRPAIR:
 949                         rc = 1;
 950                         break;
 951
 952                 default:
 953                         rc = 1;
 954                         break;
 955                 }
 956
 957                 return rc;
 958
 959         } else if ( c->op == LDAP_MOD_DELETE ) {
 960                 switch( c->type ) {
 961                 case DL_ATTRSET:
 962                         if ( c->valx < 0 ) {
 963                                 dynlist_info_t  *dli_next;
 964
 965                                 for ( dli_next = dli; dli_next; dli = dli_next ) {
 966                                         dynlist_map_t *dlm = dli->dli_dlm;
 967                                         dynlist_map_t *dlm_next;
 968
 969                                         dli_next = dli->dli_next;
 970
 971                                         if ( !BER_BVISNULL( &dli->dli_uri ) ) {
 972                                                 ch_free( dli->dli_uri.bv_val );
 973                                         }
 974
 975                                         if ( dli->dli_lud != NULL ) {
 976                                                 ldap_free_urldesc( dli->dli_lud );
 977                                         }
 978
 979                                         if ( !BER_BVISNULL( &dli->dli_uri_nbase ) ) {
 980                                                 ber_memfree( dli->dli_uri_nbase.bv_val );
 981                                         }
 982
 983                                         if ( dli->dli_uri_filter != NULL ) {
 984                                                 filter_free( dli->dli_uri_filter );
 985                                         }
 986
 987                                         ch_free( dli->dli_default_filter.bv_val );
 988
 989                                         while ( dlm != NULL ) {
 990                                                 dlm_next = dlm->dlm_next;
 991                                                 ch_free( dlm );
 992                                                 dlm = dlm_next;
 993                                         }
 994                                         ch_free( dli );
 995                                 }
 996
 997                                 on->on_bi.bi_private = NULL;
 998
 999                         } else {
1000                                 dynlist_info_t  **dlip;
1001                                 dynlist_map_t *dlm;
1002                                 dynlist_map_t *dlm_next;
1003
1004                                 for ( i = 0, dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1005                                         i < c->valx; i++ )
1006                                 {
1007                                         if ( *dlip == NULL ) {
1008                                                 return 1;
1009                                         }
1010                                         dlip = &(*dlip)->dli_next;
1011                                 }
1012
1013                                 dli = *dlip;
1014                                 *dlip = dli->dli_next;
1015
1016                                 if ( !BER_BVISNULL( &dli->dli_uri ) ) {
1017                                         ch_free( dli->dli_uri.bv_val );
1018                                 }
1019
1020                                 if ( dli->dli_lud != NULL ) {
1021                                         ldap_free_urldesc( dli->dli_lud );
1022                                 }
1023
1024                                 if ( !BER_BVISNULL( &dli->dli_uri_nbase ) ) {
1025                                         ber_memfree( dli->dli_uri_nbase.bv_val );
1026                                 }
1027
1028                                 if ( dli->dli_uri_filter != NULL ) {
1029                                         filter_free( dli->dli_uri_filter );
1030                                 }
1031
1032                                 ch_free( dli->dli_default_filter.bv_val );
1033
1034                                 dlm = dli->dli_dlm;
1035                                 while ( dlm != NULL ) {
1036                                         dlm_next = dlm->dlm_next;
1037                                         ch_free( dlm );
1038                                         dlm = dlm_next;
1039                                 }
1040                                 ch_free( dli );
1041
1042                                 dli = (dynlist_info_t *)on->on_bi.bi_private;
1043                         }
1044                         break;
1045
1046                 case DL_ATTRPAIR_COMPAT:
1047                 case DL_ATTRPAIR:
1048                         rc = 1;
1049                         break;
1050
1051                 default:
1052                         rc = 1;
1053                         break;
1054                 }
1055
1056                 return rc;
1057         }
1058
1059         switch( c->type ) {
1060         case DL_ATTRSET: {
1061                 dynlist_info_t          **dlip,
1062                                         *dli_next = NULL;
1063                 ObjectClass             *oc = NULL;
1064                 AttributeDescription    *ad = NULL;
1065                 int                     attridx = 2;
1066                 LDAPURLDesc             *lud = NULL;
1067                 struct berval           nbase = BER_BVNULL;
1068                 Filter                  *filter = NULL;
1069                 struct berval           uri = BER_BVNULL;
1070                 dynlist_map_t           *dlm = NULL, *dlml = NULL;
1071                 const char              *text;
1072
1073                 oc = oc_find( c->argv[ 1 ] );
1074                 if ( oc == NULL ) {
1075                         snprintf( c->cr_msg, sizeof( c->cr_msg ), DYNLIST_USAGE
1076                                 "unable to find ObjectClass \"%s\"",
1077                                 c->argv[ 1 ] );
1078                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1079                                 c->log, c->cr_msg, 0 );
1080                         return 1;
1081                 }
1082
1083                 if ( strncasecmp( c->argv[ attridx ], "ldap://", STRLENOF("ldap://") ) == 0 ) {
1084                         if ( ldap_url_parse( c->argv[ attridx ], &lud ) != LDAP_URL_SUCCESS ) {
1085                                 snprintf( c->cr_msg, sizeof( c->cr_msg ), DYNLIST_USAGE
1086                                         "unable to parse URI \"%s\"",
1087                                         c->argv[ attridx ] );
1088                                 rc = 1;
1089                                 goto done_uri;
1090                         }
1091
1092                         if ( lud->lud_host != NULL ) {
1093                                 if ( lud->lud_host[0] == '\0' ) {
1094                                         ch_free( lud->lud_host );
1095                                         lud->lud_host = NULL;
1096
1097                                 } else {
1098                                         snprintf( c->cr_msg, sizeof( c->cr_msg ), DYNLIST_USAGE
1099                                                 "host not allowed in URI \"%s\"",
1100                                                 c->argv[ attridx ] );
1101                                         rc = 1;
1102                                         goto done_uri;
1103                                 }
1104                         }
1105
1106                         if ( lud->lud_attrs != NULL ) {
1107                                 snprintf( c->cr_msg, sizeof( c->cr_msg ), DYNLIST_USAGE
1108                                         "attrs not allowed in URI \"%s\"",
1109                                         c->argv[ attridx ] );
1110                                 rc = 1;
1111                                 goto done_uri;
1112                         }
1113
1114                         if ( lud->lud_exts != NULL ) {
1115                                 snprintf( c->cr_msg, sizeof( c->cr_msg ), DYNLIST_USAGE
1116                                         "extensions not allowed in URI \"%s\"",
1117                                         c->argv[ attridx ] );
1118                                 rc = 1;
1119                                 goto done_uri;
1120                         }
1121
1122                         if ( lud->lud_dn != NULL && lud->lud_dn[ 0 ] != '\0' ) {
1123                                 struct berval dn;
1124                                 ber_str2bv( lud->lud_dn, 0, 0, &dn );
1125                                 rc = dnNormalize( 0, NULL, NULL, &dn, &nbase, NULL );
1126                                 if ( rc != LDAP_SUCCESS ) {
1127                                         snprintf( c->cr_msg, sizeof( c->cr_msg ), DYNLIST_USAGE
1128                                                 "DN normalization failed in URI \"%s\"",
1129                                                 c->argv[ attridx ] );
1130                                         goto done_uri;
1131                                 }
1132                         }
1133
1134                         if ( lud->lud_filter != NULL && lud->lud_filter[ 0 ] != '\0' ) {
1135                                 filter = str2filter( lud->lud_filter );
1136                                 if ( filter == NULL ) {
1137                                         snprintf( c->cr_msg, sizeof( c->cr_msg ), DYNLIST_USAGE
1138                                                 "filter parsing failed in URI \"%s\"",
1139                                                 c->argv[ attridx ] );
1140                                         rc = 1;
1141                                         goto done_uri;
1142                                 }
1143                         }
1144
1145                         ber_str2bv( c->argv[ attridx ], 0, 1, &uri );
1146
1147 done_uri:;
1148                         if ( rc ) {
1149                                 if ( lud ) {
1150                                         ldap_free_urldesc( lud );
1151                                 }
1152
1153                                 if ( !BER_BVISNULL( &nbase ) ) {
1154                                         ber_memfree( nbase.bv_val );
1155                                 }
1156
1157                                 if ( filter != NULL ) {
1158                                         filter_free( filter );
1159                                 }
1160
1161                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1162                                         c->log, c->cr_msg, 0 );
1163
1164                                 return rc;
1165                         }
1166
1167                         attridx++;
1168                 }
1169
1170                 rc = slap_str2ad( c->argv[ attridx ], &ad, &text );
1171                 if ( rc != LDAP_SUCCESS ) {
1172                         snprintf( c->cr_msg, sizeof( c->cr_msg ), DYNLIST_USAGE
1173                                 "unable to find AttributeDescription \"%s\"",
1174                                 c->argv[ attridx ] );
1175                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1176                                 c->log, c->cr_msg, 0 );
1177                         return 1;
1178                 }
1179
1180                 if ( !is_at_subtype( ad->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
1181                         snprintf( c->cr_msg, sizeof( c->cr_msg ), DYNLIST_USAGE
1182                                 "AttributeDescription \"%s\" "
1183                                 "must be a subtype of \"labeledURI\"",
1184                                 c->argv[ attridx ] );
1185                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1186                                 c->log, c->cr_msg, 0 );
1187                         return 1;
1188                 }
1189
1190                 attridx++;
1191
1192                 for ( i = attridx; i < c->argc; i++ ) {
1193                         char *arg;
1194                         char *cp;
1195                         AttributeDescription *member_ad = NULL;
1196                         AttributeDescription *mapped_ad = NULL;
1197                         dynlist_map_t *dlmp;
1198
1199
1200                         /*
1201                          * If no mapped attribute is given, dn is used
1202                          * for backward compatibility.
1203                          */
1204                         arg = c->argv[i];
1205                         if ( ( cp = strchr( arg, ':' ) ) != NULL ) {
1206                                 struct berval bv;
1207                                 ber_str2bv( arg, cp - arg, 0, &bv );
1208                                 rc = slap_bv2ad( &bv, &mapped_ad, &text );
1209                                 if ( rc != LDAP_SUCCESS ) {
1210                                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1211                                                 DYNLIST_USAGE
1212                                                 "unable to find mapped AttributeDescription #%d \"%s\"\n",
1213                                                 i - 3, c->argv[ i ] );
1214                                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1215                                                 c->log, c->cr_msg, 0 );
1216                                         return 1;
1217                                 }
1218                                 arg = cp + 1;
1219                         }
1220
1221                         rc = slap_str2ad( arg, &member_ad, &text );
1222                         if ( rc != LDAP_SUCCESS ) {
1223                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1224                                         DYNLIST_USAGE
1225                                         "unable to find AttributeDescription #%d \"%s\"\n",
1226                                         i - 3, c->argv[ i ] );
1227                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1228                                         c->log, c->cr_msg, 0 );
1229                                 return 1;
1230                         }
1231
1232                         dlmp = (dynlist_map_t *)ch_calloc( 1, sizeof( dynlist_map_t ) );
1233                         if ( dlm == NULL ) {
1234                                 dlm = dlmp;
1235                         }
1236                         dlmp->dlm_member_ad = member_ad;
1237                         dlmp->dlm_mapped_ad = mapped_ad;
1238                         dlmp->dlm_next = NULL;
1239
1240                         if ( dlml != NULL )
1241                                 dlml->dlm_next = dlmp;
1242                         dlml = dlmp;
1243                 }
1244
1245                 if ( c->valx > 0 ) {
1246                         int     i;
1247
1248                         for ( i = 0, dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1249                                 i < c->valx; i++ )
1250                         {
1251                                 if ( *dlip == NULL ) {
1252                                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1253                                                 DYNLIST_USAGE
1254                                                 "invalid index {%d}\n",
1255                                                 c->valx );
1256                                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1257                                                 c->log, c->cr_msg, 0 );
1258                                         return 1;
1259                                 }
1260                                 dlip = &(*dlip)->dli_next;
1261                         }
1262                         dli_next = *dlip;
1263
1264                 } else {
1265                         for ( dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1266                                 *dlip; dlip = &(*dlip)->dli_next )
1267                                 /* goto last */;
1268                 }
1269
1270                 *dlip = (dynlist_info_t *)ch_calloc( 1, sizeof( dynlist_info_t ) );
1271
1272                 (*dlip)->dli_oc = oc;
1273                 (*dlip)->dli_ad = ad;
1274                 (*dlip)->dli_dlm = dlm;
1275                 (*dlip)->dli_next = dli_next;
1276
1277                 (*dlip)->dli_lud = lud;
1278                 (*dlip)->dli_uri_nbase = nbase;
1279                 (*dlip)->dli_uri_filter = filter;
1280                 (*dlip)->dli_uri = uri;
1281
1282                 rc = dynlist_build_def_filter( *dlip );
1283
1284                 } break;
1285
1286         case DL_ATTRPAIR_COMPAT:
1287                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1288                         "warning: \"attrpair\" only supported for limited "
1289                         "backward compatibility with overlay \"dyngroup\"" );
1290                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n", c->log, c->cr_msg, 0 );
1291                 /* fallthru */
1292
1293         case DL_ATTRPAIR: {
1294                 dynlist_info_t          **dlip;
1295                 ObjectClass             *oc = NULL;
1296                 AttributeDescription    *ad = NULL,
1297                                         *member_ad = NULL;
1298                 const char              *text;
1299
1300                 oc = oc_find( "groupOfURLs" );
1301                 if ( oc == NULL ) {
1302                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1303                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1304                                 "unable to find default ObjectClass \"groupOfURLs\"" );
1305                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1306                                 c->log, c->cr_msg, 0 );
1307                         return 1;
1308                 }
1309
1310                 rc = slap_str2ad( c->argv[ 1 ], &member_ad, &text );
1311                 if ( rc != LDAP_SUCCESS ) {
1312                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1313                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1314                                 "unable to find AttributeDescription \"%s\"",
1315                                 c->argv[ 1 ] );
1316                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1317                                 c->log, c->cr_msg, 0 );
1318                         return 1;
1319                 }
1320
1321                 rc = slap_str2ad( c->argv[ 2 ], &ad, &text );
1322                 if ( rc != LDAP_SUCCESS ) {
1323                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1324                                 "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1325                                 "unable to find AttributeDescription \"%s\"\n",
1326                                 c->argv[ 2 ] );
1327                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1328                                 c->log, c->cr_msg, 0 );
1329                         return 1;
1330                 }
1331
1332                 if ( !is_at_subtype( ad->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) {
1333                         snprintf( c->cr_msg, sizeof( c->cr_msg ),
1334                                 DYNLIST_USAGE
1335                                 "AttributeDescription \"%s\" "
1336                                 "must be a subtype of \"labeledURI\"",
1337                                 c->argv[ 2 ] );
1338                         Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1339                                 c->log, c->cr_msg, 0 );
1340                         return 1;
1341                 }
1342
1343                 for ( dlip = (dynlist_info_t **)&on->on_bi.bi_private;
1344                         *dlip; dlip = &(*dlip)->dli_next )
1345                 {
1346                         /*
1347                          * The same URL attribute / member attribute pair
1348                          * cannot be repeated, but we enforce this only
1349                          * when the member attribute is unique. Performing
1350                          * the check for multiple values would require
1351                          * sorting and comparing the lists, which is left
1352                          * as a future improvement
1353                          */
1354                         if ( (*dlip)->dli_ad == ad &&
1355                              (*dlip)->dli_dlm->dlm_next == NULL &&
1356                              member_ad == (*dlip)->dli_dlm->dlm_member_ad ) {
1357                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1358                                         "\"dynlist-attrpair <member-ad> <URL-ad>\": "
1359                                         "URL attributeDescription \"%s\" already mapped.\n",
1360                                         ad->ad_cname.bv_val );
1361                                 Debug( LDAP_DEBUG_ANY, "%s: %s.\n",
1362                                         c->log, c->cr_msg, 0 );
1363 #if 0
1364                                 /* make it a warning... */
1365                                 return 1;
1366 #endif
1367                         }
1368                 }
1369
1370                 *dlip = (dynlist_info_t *)ch_calloc( 1, sizeof( dynlist_info_t ) );
1371
1372                 (*dlip)->dli_oc = oc;
1373                 (*dlip)->dli_ad = ad;
1374                 (*dlip)->dli_dlm = (dynlist_map_t *)ch_calloc( 1, sizeof( dynlist_map_t ) );
1375                 (*dlip)->dli_dlm->dlm_member_ad = member_ad;
1376                 (*dlip)->dli_dlm->dlm_mapped_ad = NULL;
1377
1378                 rc = dynlist_build_def_filter( *dlip );
1379
1380                 } break;
1381
1382         default:
1383                 rc = 1;
1384                 break;
1385         }
1386
1387         return rc;
1388 }
1389
1390 static int
1391 dynlist_db_open(
1392         BackendDB       *be,
1393         ConfigReply     *cr )
1394 {
1395         slap_overinst           *on = (slap_overinst *) be->bd_info;
1396         dynlist_info_t          *dli = (dynlist_info_t *)on->on_bi.bi_private;
1397         ObjectClass             *oc = NULL;
1398         AttributeDescription    *ad = NULL;
1399         const char      *text;
1400         int rc;
1401
1402         if ( dli == NULL ) {
1403                 dli = ch_calloc( 1, sizeof( dynlist_info_t ) );
1404                 on->on_bi.bi_private = (void *)dli;
1405         }
1406
1407         for ( ; dli; dli = dli->dli_next ) {
1408                 if ( dli->dli_oc == NULL ) {
1409                         if ( oc == NULL ) {
1410                                 oc = oc_find( "groupOfURLs" );
1411                                 if ( oc == NULL ) {
1412                                         snprintf( cr->msg, sizeof( cr->msg),
1413                                                 "unable to fetch objectClass \"groupOfURLs\"" );
1414                                         Debug( LDAP_DEBUG_ANY, "dynlist_db_open: %s.\n", cr->msg, 0, 0 );
1415                                         return 1;
1416                                 }
1417                         }
1418
1419                         dli->dli_oc = oc;
1420                 }
1421
1422                 if ( dli->dli_ad == NULL ) {
1423                         if ( ad == NULL ) {
1424                                 rc = slap_str2ad( "memberURL", &ad, &text );
1425                                 if ( rc != LDAP_SUCCESS ) {
1426                                         snprintf( cr->msg, sizeof( cr->msg),
1427                                                 "unable to fetch attributeDescription \"memberURL\": %d (%s)",
1428                                                 rc, text );
1429                                         Debug( LDAP_DEBUG_ANY, "dynlist_db_open: %s.\n", cr->msg, 0, 0 );
1430                                         return 1;
1431                                 }
1432                         }
1433
1434                         dli->dli_ad = ad;
1435                 }
1436
1437                 if ( BER_BVISNULL( &dli->dli_default_filter ) ) {
1438                         rc = dynlist_build_def_filter( dli );
1439                         if ( rc != 0 ) {
1440                                 return rc;
1441                         }
1442                 }
1443         }
1444
1445         if ( ad_dgIdentity == NULL ) {
1446                 rc = slap_str2ad( "dgIdentity", &ad_dgIdentity, &text );
1447                 if ( rc != LDAP_SUCCESS ) {
1448                         snprintf( cr->msg, sizeof( cr->msg),
1449                                 "unable to fetch attributeDescription \"dgIdentity\": %d (%s)",
1450                                 rc, text );
1451                         Debug( LDAP_DEBUG_ANY, "dynlist_db_open: %s\n", cr->msg, 0, 0 );
1452                         /* Just a warning */
1453                 }
1454         }
1455
1456         if ( ad_dgAuthz == NULL ) {
1457                 rc = slap_str2ad( "dgAuthz", &ad_dgAuthz, &text );
1458                 if ( rc != LDAP_SUCCESS ) {
1459                         snprintf( cr->msg, sizeof( cr->msg),
1460                                 "unable to fetch attributeDescription \"dgAuthz\": %d (%s)",
1461                                 rc, text );
1462                         Debug( LDAP_DEBUG_ANY, "dynlist_db_open: %s\n", cr->msg, 0, 0 );
1463                         /* Just a warning */
1464                 }
1465         }
1466
1467         return 0;
1468 }
1469
1470 static int
1471 dynlist_db_destroy(
1472         BackendDB       *be,
1473         ConfigReply     *cr )
1474 {
1475         slap_overinst   *on = (slap_overinst *) be->bd_info;
1476
1477         if ( on->on_bi.bi_private ) {
1478                 dynlist_info_t  *dli = (dynlist_info_t *)on->on_bi.bi_private,
1479                                 *dli_next;
1480
1481                 for ( dli_next = dli; dli_next; dli = dli_next ) {
1482                         dynlist_map_t *dlm;
1483                         dynlist_map_t *dlm_next;
1484
1485                         dli_next = dli->dli_next;
1486
1487                         if ( !BER_BVISNULL( &dli->dli_uri ) ) {
1488                                 ch_free( dli->dli_uri.bv_val );
1489                         }
1490
1491                         if ( dli->dli_lud != NULL ) {
1492                                 ldap_free_urldesc( dli->dli_lud );
1493                         }
1494
1495                         if ( !BER_BVISNULL( &dli->dli_uri_nbase ) ) {
1496                                 ber_memfree( dli->dli_uri_nbase.bv_val );
1497                         }
1498
1499                         if ( dli->dli_uri_filter != NULL ) {
1500                                 filter_free( dli->dli_uri_filter );
1501                         }
1502
1503                         ch_free( dli->dli_default_filter.bv_val );
1504
1505                         dlm = dli->dli_dlm;
1506                         while ( dlm != NULL ) {
1507                                 dlm_next = dlm->dlm_next;
1508                                 ch_free( dlm );
1509                                 dlm = dlm_next;
1510                         }
1511                         ch_free( dli );
1512                 }
1513         }
1514
1515         return 0;
1516 }
1517
1518 static slap_overinst    dynlist = { { NULL } };
1519 #ifdef TAKEOVER_DYNGROUP
1520 static char             *obsolete_names[] = {
1521         "dyngroup",
1522         NULL
1523 };
1524 #endif
1525
1526 #if SLAPD_OVER_DYNLIST == SLAPD_MOD_DYNAMIC
1527 static
1528 #endif /* SLAPD_OVER_DYNLIST == SLAPD_MOD_DYNAMIC */
1529 int
1530 dynlist_initialize(void)
1531 {
1532         int     rc = 0;
1533
1534         dynlist.on_bi.bi_type = "dynlist";
1535
1536 #ifdef TAKEOVER_DYNGROUP
1537         /* makes dynlist incompatible with dyngroup */
1538         dynlist.on_bi.bi_obsolete_names = obsolete_names;
1539 #endif
1540
1541         dynlist.on_bi.bi_db_config = config_generic_wrapper;
1542         dynlist.on_bi.bi_db_open = dynlist_db_open;
1543         dynlist.on_bi.bi_db_destroy = dynlist_db_destroy;
1544
1545         dynlist.on_response = dynlist_response;
1546
1547         dynlist.on_bi.bi_cf_ocs = dlocs;
1548
1549         rc = config_register_schema( dlcfg, dlocs );
1550         if ( rc ) {
1551                 return rc;
1552         }
1553
1554         return overlay_register( &dynlist );
1555 }
1556
1557 #if SLAPD_OVER_DYNLIST == SLAPD_MOD_DYNAMIC
1558 int
1559 init_module( int argc, char *argv[] )
1560 {
1561         return dynlist_initialize();
1562 }
1563 #endif
1564
1565 #endif /* SLAPD_OVER_DYNLIST */