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

   1 /* dynlist.c - dynamic list overlay */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 2003-2005 The OpenLDAP Foundation.
   5  * Portions Copyright 2004-2005 Pierangelo Masarati.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* ACKNOWLEDGEMENTS:
  17  * This work was initially developed by Pierangelo Masarati
  18  * for SysNet s.n.c., for inclusion in OpenLDAP Software.
  19  */
  20
  21 #include "portable.h"
  22
  23 #ifdef SLAPD_OVER_DYNLIST
  24
  25 #include <stdio.h>
  26
  27 #include <ac/string.h>
  28
  29 #include "slap.h"
  30 #include "lutil.h"
  31
  32 /* FIXME: the code differs if SLAP_OPATTRS is defined or not;
  33  * SLAP_OPATTRS is not defined in 2.2 yet, while this overlay
  34  * expects HEAD code at least later than August 6, 2004. */
  35 /* FIXME: slap_anlist_no_attrs was introduced in 2.3; here it
  36  * is anticipated to allow using this overlay with 2.2. */
  37
  38 #if LDAP_VENDOR_VERSION_MINOR != X && LDAP_VENDOR_VERSION_MINOR < 3
  39 static AttributeName anlist_no_attrs[] = {
  40         { BER_BVC( LDAP_NO_ATTRS ), NULL, 0, NULL },
  41         { BER_BVNULL, NULL, 0, NULL }
  42 };
  43
  44 static AttributeName *slap_anlist_no_attrs = anlist_no_attrs;
  45 #endif
  46
  47 typedef struct dynlist_info {
  48         ObjectClass             *dli_oc;
  49         AttributeDescription    *dli_ad;
  50         AttributeDescription    *dli_member_ad;
  51         struct berval           dli_default_filter;
  52 } dynlist_info;
  53
  54 static int
  55 dynlist_is_dynlist( Operation *op, SlapReply *rs )
  56 {
  57         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
  58         dynlist_info    *dli = (dynlist_info *)on->on_bi.bi_private;
  59
  60         Attribute       *a;
  61
  62         a = attrs_find( rs->sr_entry->e_attrs, slap_schema.si_ad_objectClass );
  63         if ( a == NULL ) {
  64                 /* FIXME: objectClass must be present; for non-storage
  65                  * backends, like back-ldap, it needs to be added
  66                  * to the requested attributes */
  67                 return 0;
  68         }
  69
  70         if ( value_find_ex( slap_schema.si_ad_objectClass,
  71                         SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
  72                         SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
  73                         a->a_nvals, &dli->dli_oc->soc_cname,
  74                         op->o_tmpmemctx ) == 0 )
  75         {
  76                 return 1;
  77         }
  78
  79         return 0;
  80 }
  81
  82 static int
  83 dynlist_make_filter( Operation *op, struct berval *oldf, struct berval *newf )
  84 {
  85         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
  86         dynlist_info    *dli = (dynlist_info *)on->on_bi.bi_private;
  87
  88         char            *ptr;
  89
  90         assert( oldf != NULL );
  91         assert( newf != NULL );
  92         assert( !BER_BVISNULL( oldf ) );
  93         assert( !BER_BVISEMPTY( oldf ) );
  94
  95         newf->bv_len = STRLENOF( "(&(!(objectClass=" "))" ")" )
  96                 + dli->dli_oc->soc_cname.bv_len + oldf->bv_len;
  97         newf->bv_val = op->o_tmpalloc( newf->bv_len + 1, op->o_tmpmemctx );
  98         if ( newf->bv_val == NULL ) {
  99                 return -1;
 100         }
 101         ptr = lutil_strcopy( newf->bv_val, "(&(!(objectClass=" );
 102         ptr = lutil_strcopy( ptr, dli->dli_oc->soc_cname.bv_val );
 103         ptr = lutil_strcopy( ptr, "))" );
 104         ptr = lutil_strcopy( ptr, oldf->bv_val );
 105         ptr = lutil_strcopy( ptr, ")" );
 106         newf->bv_len = ptr - newf->bv_val;
 107
 108         return 0;
 109 }
 110
 111 typedef struct dynlist_sc_t {
 112         dynlist_info    *dlc_dli;
 113         Entry           *dlc_e;
 114 } dynlist_sc_t;
 115
 116 static int
 117 dynlist_sc_update( Operation *op, SlapReply *rs )
 118 {
 119         Entry                   *e;
 120         Attribute               *a;
 121         int                     opattrs,
 122                                 userattrs;
 123         AccessControlState      acl_state = ACL_STATE_INIT;
 124
 125         dynlist_sc_t            *dlc;
 126
 127         if ( rs->sr_type != REP_SEARCH ) {
 128                 return 0;
 129         }
 130
 131         dlc = (dynlist_sc_t *)op->o_callback->sc_private;
 132         e = dlc->dlc_e;
 133
 134         assert( e != NULL );
 135         assert( rs->sr_entry != NULL );
 136
 137         /* test access to entry */
 138         if ( !access_allowed( op, rs->sr_entry, slap_schema.si_ad_entry,
 139                                 NULL, ACL_READ, NULL ) )
 140         {
 141                 goto done;
 142         }
 143
 144         if ( dlc->dlc_dli->dli_member_ad ) {
 145
 146                 /* if access allowed, try to add values, emulating permissive
 147                  * control to silently ignore duplicates */
 148                 if ( access_allowed( op, rs->sr_entry, slap_schema.si_ad_entry,
 149                                         NULL, ACL_READ, NULL ) )
 150                 {
 151                         Modification    mod;
 152                         const char      *text = NULL;
 153                         char            textbuf[1024];
 154                         struct berval   vals[ 2 ], nvals[ 2 ];
 155
 156                         vals[ 0 ] = rs->sr_entry->e_name;
 157                         BER_BVZERO( &vals[ 1 ] );
 158                         nvals[ 0 ] = rs->sr_entry->e_nname;
 159                         BER_BVZERO( &nvals[ 1 ] );
 160
 161                         mod.sm_op = LDAP_MOD_ADD;
 162                         mod.sm_desc = dlc->dlc_dli->dli_member_ad;
 163                         mod.sm_type = dlc->dlc_dli->dli_member_ad->ad_cname;
 164                         mod.sm_values = vals;
 165                         mod.sm_nvalues = nvals;
 166
 167                         (void)modify_add_values( e, &mod, /* permissive */ 1,
 168                                         &text, textbuf, sizeof( textbuf ) );
 169                 }
 170
 171                 goto done;
 172         }
 173
 174 #ifndef SLAP_OPATTRS
 175         opattrs = ( rs->sr_attrs == NULL ) ? 0 : an_find( rs->sr_attrs, &AllOper );
 176         userattrs = ( rs->sr_attrs == NULL ) ? 1 : an_find( rs->sr_attrs, &AllUser );
 177 #else /* SLAP_OPATTRS */
 178         opattrs = SLAP_OPATTRS( rs->sr_attr_flags );
 179         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 180 #endif /* SLAP_OPATTRS */
 181
 182         for ( a = rs->sr_entry->e_attrs; a != NULL; a = a->a_next ) {
 183                 BerVarray       vals, nvals = NULL;
 184                 int             i, j;
 185
 186                 /* if attribute is not requested, skip it */
 187                 if ( rs->sr_attrs == NULL ) {
 188                         if ( is_at_operational( a->a_desc->ad_type ) ) {
 189                                 continue;
 190                         }
 191
 192                 } else {
 193                         if ( is_at_operational( a->a_desc->ad_type ) ) {
 194                                 if ( !opattrs && !ad_inlist( a->a_desc, rs->sr_attrs ) )
 195                                 {
 196                                         continue;
 197                                 }
 198
 199                         } else {
 200                                 if ( !userattrs && !ad_inlist( a->a_desc, rs->sr_attrs ) )
 201                                 {
 202                                         continue;
 203                                 }
 204                         }
 205                 }
 206
 207                 /* test access to attribute */
 208                 if ( op->ors_attrsonly ) {
 209                         if ( !access_allowed( op, rs->sr_entry, a->a_desc, NULL,
 210                                                 ACL_READ, &acl_state ) )
 211                         {
 212                                 continue;
 213                         }
 214                 }
 215
 216                 /* single-value check: keep first only */
 217                 if ( is_at_single_value( a->a_desc->ad_type ) ) {
 218                         if ( attr_find( e->e_attrs, a->a_desc ) != NULL ) {
 219                                 continue;
 220                         }
 221                 }
 222
 223                 /* test access to attribute */
 224                 for ( i = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ )
 225                         /* just count */ ;
 226
 227                 vals = op->o_tmpalloc( ( i + 1 ) * sizeof( struct berval ), op->o_tmpmemctx );
 228                 if ( a->a_nvals != a->a_vals ) {
 229                         nvals = op->o_tmpalloc( ( i + 1 ) * sizeof( struct berval ), op->o_tmpmemctx );
 230                 }
 231
 232                 for ( i = 0, j = 0; !BER_BVISNULL( &a->a_vals[i] ); i++ ) {
 233                         if ( access_allowed( op, rs->sr_entry, a->a_desc,
 234                                                 &a->a_nvals[i], ACL_READ, &acl_state ) )
 235                         {
 236                                 vals[j] = a->a_vals[i];
 237                                 if ( nvals ) {
 238                                         nvals[j] = a->a_nvals[i];
 239                                 }
 240                                 j++;
 241                         }
 242                 }
 243
 244                 /* if access allowed, try to add values, emulating permissive
 245                  * control to silently ignore duplicates */
 246                 if ( j != 0 ) {
 247                         Modification    mod;
 248                         const char      *text = NULL;
 249                         char            textbuf[1024];
 250
 251                         BER_BVZERO( &vals[j] );
 252                         if ( nvals ) {
 253                                 BER_BVZERO( &nvals[j] );
 254                         }
 255
 256                         mod.sm_op = LDAP_MOD_ADD;
 257                         mod.sm_desc = a->a_desc;
 258                         mod.sm_type = a->a_desc->ad_cname;
 259                         mod.sm_values = vals;
 260                         mod.sm_nvalues = nvals;
 261
 262                         (void)modify_add_values( e, &mod, /* permissive */ 1,
 263                                         &text, textbuf, sizeof( textbuf ) );
 264                 }
 265
 266                 op->o_tmpfree( vals, op->o_tmpmemctx );
 267                 if ( nvals ) {
 268                         op->o_tmpfree( nvals, op->o_tmpmemctx );
 269                 }
 270         }
 271
 272 done:;
 273         if ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) {
 274                 entry_free( rs->sr_entry );
 275         }
 276
 277         return 0;
 278 }
 279
 280 static int
 281 dynlist_send_entry( Operation *op, SlapReply *rs )
 282 {
 283         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 284         dynlist_info    *dli = (dynlist_info *)on->on_bi.bi_private;
 285
 286         Attribute       *a;
 287         slap_callback   cb;
 288         Operation       o = *op;
 289         SlapReply       r = { REP_SEARCH };
 290         struct berval   *url;
 291         Entry           *e;
 292         slap_mask_t     e_flags;
 293         int             opattrs,
 294                         userattrs;
 295         dynlist_sc_t    dlc = { 0 };
 296
 297         a = attrs_find( rs->sr_entry->e_attrs, dli->dli_ad );
 298         if ( a == NULL ) {
 299                 /* FIXME: error? */
 300                 return SLAP_CB_CONTINUE;
 301         }
 302
 303         e = entry_dup( rs->sr_entry );
 304         e_flags = rs->sr_flags | ( REP_ENTRY_MODIFIABLE | REP_ENTRY_MUSTBEFREED );
 305
 306         dlc.dlc_e = e;
 307         dlc.dlc_dli = dli;
 308         cb.sc_private = &dlc;
 309         cb.sc_response = dynlist_sc_update;
 310         cb.sc_cleanup = NULL;
 311         cb.sc_next = NULL;
 312
 313         o.o_callback = &cb;
 314         o.ors_deref = LDAP_DEREF_NEVER;
 315         o.ors_limit = NULL;
 316         o.ors_tlimit = SLAP_NO_LIMIT;
 317         o.ors_slimit = SLAP_NO_LIMIT;
 318
 319 #ifndef SLAP_OPATTRS
 320         opattrs = ( rs->sr_attrs == NULL ) ? 0 : an_find( rs->sr_attrs, &AllOper );
 321         userattrs = ( rs->sr_attrs == NULL ) ? 1 : an_find( rs->sr_attrs, &AllUser );
 322 #else /* SLAP_OPATTRS */
 323         opattrs = SLAP_OPATTRS( rs->sr_attr_flags );
 324         userattrs = SLAP_USERATTRS( rs->sr_attr_flags );
 325 #endif /* SLAP_OPATTRS */
 326
 327         for ( url = a->a_nvals; !BER_BVISNULL( url ); url++ ) {
 328                 LDAPURLDesc     *lud = NULL;
 329                 int             i, j;
 330                 struct berval   dn;
 331                 int             rc;
 332
 333                 BER_BVZERO( &o.o_req_dn );
 334                 BER_BVZERO( &o.o_req_ndn );
 335                 o.ors_filter = NULL;
 336                 o.ors_attrs = NULL;
 337                 BER_BVZERO( &o.ors_filterstr );
 338
 339                 if ( ldap_url_parse( url->bv_val, &lud ) != LDAP_URL_SUCCESS ) {
 340                         /* FIXME: error? */
 341                         continue;
 342                 }
 343
 344                 if ( lud->lud_host ) {
 345                         /* FIXME: host not allowed; reject as illegal? */
 346                         Debug( LDAP_DEBUG_ANY, "dynlist_send_entry(\"%s\"): "
 347                                 "illegal URI \"%s\"\n",
 348                                 e->e_name.bv_val, url->bv_val, 0 );
 349                         goto cleanup;
 350                 }
 351
 352                 if ( lud->lud_dn == NULL ) {
 353                         /* note that an empty base is not honored in terms
 354                          * of defaultSearchBase, because select_backend()
 355                          * is not aware of the defaultSearchBase option;
 356                          * this can be useful in case of a database serving
 357                          * the empty suffix */
 358                         BER_BVSTR( &dn, "" );
 359                 } else {
 360                         ber_str2bv( lud->lud_dn, 0, 0, &dn );
 361                 }
 362                 rc = dnPrettyNormal( NULL, &dn, &o.o_req_dn, &o.o_req_ndn, op->o_tmpmemctx );
 363                 if ( rc != LDAP_SUCCESS ) {
 364                         /* FIXME: error? */
 365                         goto cleanup;
 366                 }
 367                 o.ors_scope = lud->lud_scope;
 368
 369                 if ( dli->dli_member_ad != NULL ) {
 370                         o.ors_attrs = slap_anlist_no_attrs;
 371
 372                 } else if ( lud->lud_attrs == NULL ) {
 373                         o.ors_attrs = rs->sr_attrs;
 374
 375                 } else {
 376                         for ( i = 0; lud->lud_attrs[i]; i++)
 377                                 /* just count */ ;
 378
 379                         o.ors_attrs = op->o_tmpcalloc( i + 1, sizeof( AttributeName ), op->o_tmpmemctx );
 380                         for ( i = 0, j = 0; lud->lud_attrs[i]; i++) {
 381                                 const char      *text = NULL;
 382
 383                                 ber_str2bv( lud->lud_attrs[i], 0, 0, &o.ors_attrs[j].an_name );
 384                                 o.ors_attrs[j].an_desc = NULL;
 385                                 (void)slap_bv2ad( &o.ors_attrs[j].an_name, &o.ors_attrs[j].an_desc, &text );
 386                                 /* FIXME: ignore errors... */
 387
 388                                 if ( rs->sr_attrs == NULL ) {
 389                                         if ( o.ors_attrs[j].an_desc != NULL &&
 390                                                         is_at_operational( o.ors_attrs[j].an_desc->ad_type ) )
 391                                         {
 392                                                 continue;
 393                                         }
 394
 395                                 } else {
 396                                         if ( o.ors_attrs[j].an_desc != NULL &&
 397                                                         is_at_operational( o.ors_attrs[j].an_desc->ad_type ) )
 398                                         {
 399                                                 if ( !opattrs && !ad_inlist( o.ors_attrs[j].an_desc, rs->sr_attrs ) )
 400                                                 {
 401                                                         continue;
 402                                                 }
 403
 404                                         } else {
 405                                                 if ( !userattrs &&
 406                                                                 o.ors_attrs[j].an_desc != NULL &&
 407                                                                 !ad_inlist( o.ors_attrs[j].an_desc, rs->sr_attrs ) )
 408                                                 {
 409                                                         continue;
 410                                                 }
 411                                         }
 412                                 }
 413
 414                                 j++;
 415                         }
 416
 417                         if ( j == 0 ) {
 418                                 goto cleanup;
 419                         }
 420
 421                         BER_BVZERO( &o.ors_attrs[j].an_name );
 422                 }
 423
 424                 if ( lud->lud_filter == NULL ) {
 425                         ber_dupbv_x( &o.ors_filterstr,
 426                                         &dli->dli_default_filter, op->o_tmpmemctx );
 427                 } else {
 428                         struct berval   flt;
 429                         ber_str2bv( lud->lud_filter, 0, 0, &flt );
 430                         if ( dynlist_make_filter( op, &flt, &o.ors_filterstr ) ) {
 431                                 /* error */
 432                                 goto cleanup;
 433                         }
 434                 }
 435                 o.ors_filter = str2filter_x( op, o.ors_filterstr.bv_val );
 436                 if ( o.ors_filter == NULL ) {
 437                         goto cleanup;
 438                 }
 439
 440                 o.o_bd = select_backend( &o.o_req_ndn, 0, 1 );
 441                 if ( o.o_bd && o.o_bd->be_search ) {
 442 #ifdef SLAP_OPATTRS
 443                         r.sr_attr_flags = slap_attr_flags( o.ors_attrs );
 444 #endif /* SLAP_OPATTRS */
 445                         (void)o.o_bd->be_search( &o, &r );
 446                 }
 447
 448 cleanup:;
 449                 if ( o.ors_filter ) {
 450                         filter_free_x( &o, o.ors_filter );
 451                 }
 452                 if ( o.ors_attrs && o.ors_attrs != rs->sr_attrs
 453                                 && o.ors_attrs != slap_anlist_no_attrs )
 454                 {
 455                         op->o_tmpfree( o.ors_attrs, op->o_tmpmemctx );
 456                 }
 457                 if ( !BER_BVISNULL( &o.o_req_dn ) ) {
 458                         op->o_tmpfree( o.o_req_dn.bv_val, op->o_tmpmemctx );
 459                 }
 460                 if ( !BER_BVISNULL( &o.o_req_ndn ) ) {
 461                         op->o_tmpfree( o.o_req_ndn.bv_val, op->o_tmpmemctx );
 462                 }
 463                 if ( o.ors_filterstr.bv_val != lud->lud_filter ) {
 464                         op->o_tmpfree( o.ors_filterstr.bv_val, op->o_tmpmemctx );
 465                         lud->lud_filter = NULL;
 466                 }
 467                 if ( lud ) {
 468                         ldap_free_urldesc( lud );
 469                 }
 470         }
 471
 472         rs->sr_entry = e;
 473         rs->sr_flags = e_flags;
 474
 475         return SLAP_CB_CONTINUE;
 476 }
 477
 478 static int
 479 dynlist_sc_save_entry( Operation *op, SlapReply *rs )
 480 {
 481         /* save the entry in the private field of the callback,
 482          * so it doesn't get freed (it's temporary!) */
 483         if ( rs->sr_entry != NULL ) {
 484                 dynlist_sc_t    *dlc = (dynlist_sc_t *)op->o_callback->sc_private;
 485                 dlc->dlc_e = rs->sr_entry;
 486                 rs->sr_entry = NULL;
 487         }
 488
 489         return 0;
 490 }
 491
 492 static int
 493 dynlist_compare( Operation *op, SlapReply *rs )
 494 {
 495         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 496         dynlist_info    *dli = (dynlist_info *)on->on_bi.bi_private;
 497
 498         Attribute       *a;
 499         slap_callback   cb;
 500         Operation       o = *op;
 501         SlapReply       r = { REP_SEARCH };
 502         AttributeName   an[2];
 503         int             rc;
 504         dynlist_sc_t    dlc = { 0 };
 505
 506         if (  op->oq_compare.rs_ava->aa_desc == dli->dli_member_ad ) {
 507                 /* This compare is for one of the attributes we're
 508                  * interested in. We'll use slapd's existing dyngroup
 509                  * evaluator to get the answer we want.
 510                  */
 511                 int cache = op->o_do_not_cache;
 512
 513                 op->o_do_not_cache = 1;
 514                         rs->sr_err = backend_group( op, NULL, &op->o_req_ndn,
 515                         &op->oq_compare.rs_ava->aa_value, dli->dli_oc, dli->dli_ad );
 516                 op->o_do_not_cache = cache;
 517                 if ( rs->sr_err == LDAP_SUCCESS ) {
 518                         rs->sr_err = LDAP_COMPARE_TRUE;
 519                 }
 520
 521                 return SLAP_CB_CONTINUE;
 522         }
 523
 524         dlc.dlc_dli = dli;
 525         cb.sc_private = &dlc;
 526         cb.sc_response = dynlist_sc_save_entry;
 527         cb.sc_cleanup = NULL;
 528         cb.sc_next = NULL;
 529         o.o_callback = &cb;
 530
 531         o.o_tag = LDAP_REQ_SEARCH;
 532         o.ors_limit = NULL;
 533         o.ors_tlimit = SLAP_NO_LIMIT;
 534         o.ors_slimit = SLAP_NO_LIMIT;
 535
 536         o.o_bd = select_backend( &o.o_req_ndn, 0, 1 );
 537         if ( !o.o_bd || !o.o_bd->be_search ) {
 538                 return SLAP_CB_CONTINUE;
 539         }
 540
 541         BER_BVSTR( &o.ors_filterstr, "(objectClass=*)" );
 542         o.ors_filter = str2filter_x( op, o.ors_filterstr.bv_val );
 543         if ( o.ors_filter == NULL ) {
 544                 /* FIXME: error? */
 545                 return SLAP_CB_CONTINUE;
 546         }
 547
 548         o.ors_scope = LDAP_SCOPE_BASE;
 549         o.ors_deref = LDAP_DEREF_NEVER;
 550         an[0].an_name = op->orc_ava->aa_desc->ad_cname;
 551         an[0].an_desc = op->orc_ava->aa_desc;
 552         BER_BVZERO( &an[1].an_name );
 553         o.ors_attrs = an;
 554         o.ors_attrsonly = 0;
 555
 556         rc = o.o_bd->be_search( &o, &r );
 557         filter_free_x( &o, o.ors_filter );
 558
 559         if ( rc != 0 ) {
 560                 return rc;
 561         }
 562
 563         if ( dlc.dlc_e != NULL ) {
 564                 r.sr_entry = dlc.dlc_e;
 565         }
 566
 567         if ( r.sr_err != LDAP_SUCCESS || r.sr_entry == NULL ) {
 568                 /* error? */
 569                 return SLAP_CB_CONTINUE;
 570         }
 571
 572         /* if we're here, we got a match... */
 573         rs->sr_err = LDAP_COMPARE_FALSE;
 574         for ( a = attrs_find( r.sr_entry->e_attrs, op->orc_ava->aa_desc );
 575                 a != NULL;
 576                 a = attrs_find( a->a_next, op->orc_ava->aa_desc ) )
 577         {
 578                 if ( value_find_ex( op->orc_ava->aa_desc,
 579                         SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
 580                                 SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH,
 581                         a->a_nvals, &op->orc_ava->aa_value, op->o_tmpmemctx ) == 0 )
 582                 {
 583                         rs->sr_err = LDAP_COMPARE_TRUE;
 584                         break;
 585                 }
 586         }
 587
 588         if ( r.sr_flags & REP_ENTRY_MUSTBEFREED ) {
 589                 entry_free( r.sr_entry );
 590         }
 591
 592         return SLAP_CB_CONTINUE;
 593 }
 594
 595 static int
 596 dynlist_response( Operation *op, SlapReply *rs )
 597 {
 598         switch ( op->o_tag ) {
 599         case LDAP_REQ_SEARCH:
 600                 if ( rs->sr_type == REP_SEARCH && !get_manageDSAit( op ) )
 601                 {
 602                         if ( dynlist_is_dynlist( op, rs ) ) {
 603                                 return dynlist_send_entry( op, rs );
 604                         }
 605                 }
 606                 break;
 607
 608         case LDAP_REQ_COMPARE:
 609                 switch ( rs->sr_err ) {
 610                 /* NOTE: we waste a few cycles running the dynamic list
 611                  * also when the result is FALSE, which occurs if the
 612                  * dynamic entry itself contains the AVA attribute  */
 613                 /* FIXME: this approach is less than optimal; a dedicated
 614                  * compare op should be implemented, that fetches the
 615                  * entry, checks if it has the appropriate objectClass
 616                  * and, in case, runs a compare thru all the URIs,
 617                  * stopping at the first positive occurrence; see ITS#3756 */
 618                 case LDAP_COMPARE_FALSE:
 619                 case LDAP_NO_SUCH_ATTRIBUTE:
 620                         return dynlist_compare( op, rs );
 621                 }
 622                 break;
 623
 624         default:
 625                 break;
 626         }
 627
 628         return SLAP_CB_CONTINUE;
 629 }
 630
 631 static int
 632 dynlist_db_config(
 633         BackendDB       *be,
 634         const char      *fname,
 635         int             lineno,
 636         int             argc,
 637         char            **argv )
 638 {
 639         slap_overinst   *on = (slap_overinst *)be->bd_info;
 640         dynlist_info    *dli = (dynlist_info *)on->on_bi.bi_private;
 641
 642         int             rc = 0;
 643
 644         if ( strcasecmp( argv[0], "dynlist-oc" ) == 0 ) {
 645                 if ( argc != 2 ) {
 646                         fprintf( stderr, "dynlist-oc <oc>\n" );
 647                         return 1;
 648                 }
 649                 dli->dli_oc = oc_find( argv[1] );
 650                 if ( dli->dli_oc == NULL ) {
 651                         fprintf( stderr, "dynlist-oc <oc>: "
 652                                         "unable to find ObjectClass "
 653                                         "\"%s\"\n", argv[1] );
 654                         return 1;
 655                 }
 656
 657         } else if ( strcasecmp( argv[0], "dynlist-ad" ) == 0 ) {
 658                 const char      *text;
 659
 660                 if ( argc != 2 ) {
 661                         fprintf( stderr, "dynlist-ad <ad>\n" );
 662                         return 1;
 663                 }
 664                 dli->dli_ad = NULL;
 665                 rc = slap_str2ad( argv[1], &dli->dli_ad, &text );
 666                 if ( rc != LDAP_SUCCESS ) {
 667                         fprintf( stderr, "dynlist-ad <ad>: "
 668                                         "unable to find AttributeDescription "
 669                                         "\"%s\"\n", argv[1] );
 670                         return 1;
 671                 }
 672
 673         } else if ( strcasecmp( argv[0], "dynlist-member-ad" ) == 0 ) {
 674                 const char      *text;
 675
 676                 if ( argc != 2 ) {
 677                         fprintf( stderr, "dynlist-member-ad <ad>\n" );
 678                         return 1;
 679                 }
 680                 dli->dli_member_ad = NULL;
 681                 rc = slap_str2ad( argv[1], &dli->dli_member_ad, &text );
 682                 if ( rc != LDAP_SUCCESS ) {
 683                         fprintf( stderr, "dynlist-member-ad <ad>: "
 684                                         "unable to find AttributeDescription "
 685                                         "\"%s\"\n", argv[1] );
 686                         return 1;
 687                 }
 688
 689         } else {
 690                 rc = SLAP_CONF_UNKNOWN;
 691         }
 692
 693         return rc;
 694 }
 695
 696 static int
 697 dynlist_db_init(
 698         BackendDB       *be )
 699 {
 700         slap_overinst   *on = (slap_overinst *) be->bd_info;
 701         dynlist_info    *dli;
 702
 703         dli = (dynlist_info *)ch_malloc( sizeof( dynlist_info ) );
 704         memset( dli, 0, sizeof( dynlist_info ) );
 705
 706         on->on_bi.bi_private = (void *)dli;
 707
 708         return 0;
 709 }
 710
 711 static int
 712 dynlist_db_open(
 713         BackendDB       *be )
 714 {
 715         slap_overinst   *on = (slap_overinst *) be->bd_info;
 716         dynlist_info    *dli = (dynlist_info *)on->on_bi.bi_private;
 717         ber_len_t       len;
 718         char            *ptr;
 719
 720         if ( dli->dli_oc == NULL ) {
 721                 fprintf( stderr, "dynlist_db_open(): missing \"dynlist-oc <ObjectClass>\"\n" );
 722                 return -1;
 723         }
 724
 725         if ( dli->dli_ad == NULL ) {
 726                 fprintf( stderr, "dynlist_db_open(): missing \"dynlist-ad <AttributeDescription>\"\n" );
 727                 return -1;
 728         }
 729
 730         len = STRLENOF( "(!(objectClass=" "))" )
 731                 + dli->dli_oc->soc_cname.bv_len;
 732         dli->dli_default_filter.bv_val = SLAP_MALLOC( len + 1 );
 733         if ( dli->dli_default_filter.bv_val == NULL ) {
 734                 fprintf( stderr, "dynlist_db_open(): malloc failed\n" );
 735                 return -1;
 736         }
 737         ptr = lutil_strcopy( dli->dli_default_filter.bv_val, "(!(objectClass=" );
 738         ptr = lutil_strcopy( ptr, dli->dli_oc->soc_cname.bv_val );
 739         ptr = lutil_strcopy( ptr, "))" );
 740         dli->dli_default_filter.bv_len = ptr - dli->dli_default_filter.bv_val;
 741
 742         return 0;
 743 }
 744
 745 static int
 746 dynlist_db_destroy(
 747         BackendDB       *be )
 748 {
 749         slap_overinst   *on = (slap_overinst *) be->bd_info;
 750         int             rc = 0;
 751
 752         if ( on->on_bi.bi_private ) {
 753                 dynlist_info    *dli = (dynlist_info *)on->on_bi.bi_private;
 754
 755                 dli->dli_oc = NULL;
 756                 dli->dli_ad = NULL;
 757
 758                 ch_free( dli );
 759         }
 760
 761         return rc;
 762 }
 763
 764 static slap_overinst dynlist = { { NULL } };
 765
 766 #if SLAPD_OVER_DYNLIST == SLAPD_MOD_DYNAMIC
 767 static
 768 #endif /* SLAPD_OVER_DYNLIST == SLAPD_MOD_DYNAMIC */
 769 int
 770 dynlist_initialize(void)
 771 {
 772         dynlist.on_bi.bi_type = "dynlist";
 773         dynlist.on_bi.bi_db_init = dynlist_db_init;
 774         dynlist.on_bi.bi_db_config = dynlist_db_config;
 775         dynlist.on_bi.bi_db_open = dynlist_db_open;
 776         dynlist.on_bi.bi_db_destroy = dynlist_db_destroy;
 777
 778         dynlist.on_response = dynlist_response;
 779
 780         return overlay_register( &dynlist );
 781 }
 782
 783 #if SLAPD_OVER_DYNLIST == SLAPD_MOD_DYNAMIC
 784 int
 785 init_module( int argc, char *argv[] )
 786 {
 787         return dynlist_initialize();
 788 }
 789 #endif
 790
 791 #endif /* SLAPD_OVER_DYNLIST */