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

   1 /* memberof.c - back-reference for group membership */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2005-2007 Pierangelo Masarati <ando@sys-net.it>
   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 /* ACKNOWLEDGMENTS:
  17  * This work was initially developed by Pierangelo Masarati for inclusion
  18  * in OpenLDAP Software, sponsored by SysNet s.r.l.
  19  */
  20
  21 #include "portable.h"
  22
  23 #ifdef SLAPD_OVER_MEMBEROF
  24
  25 #include <stdio.h>
  26
  27 #include "ac/string.h"
  28 #include "ac/socket.h"
  29
  30 #include "slap.h"
  31 #include "config.h"
  32 #include "lutil.h"
  33
  34 /*
  35  *      Glossary:
  36  *
  37  *              GROUP           a group object (an entry with GROUP_OC
  38  *                              objectClass)
  39  *              MEMBER          a member object (an entry whose DN is
  40  *                              listed as MEMBER_AT value of a GROUP)
  41  *              GROUP_OC        the objectClass of the group object
  42  *                              (default: groupOfNames)
  43  *              MEMBER_AT       the membership attribute, DN-valued;
  44  *                              note: nameAndOptionalUID is tolerated
  45  *                              as soon as the optionalUID is absent
  46  *                              (default: member)
  47  *              MEMBER_OF       reverse membership attribute
  48  *                              (default: memberOf)
  49  *
  50  *      - add:
  51  *              - if the entry that is being added is a GROUP,
  52  *                the MEMBER_AT defined as values of the add operation
  53  *                get the MEMBER_OF value directly from the request.
  54  *
  55  *                if configured to do so, the MEMBER objects do not exist,
  56  *                and no relax control is issued, either:
  57  *                      - fail
  58  *                      - drop non-existing members
  59  *                (by default: don't muck with values)
  60  *
  61  *              - if (configured to do so,) the referenced GROUP exists,
  62  *                the relax control is set and the user has
  63  *                "manage" privileges, allow to add MEMBER_OF values to
  64  *                generic entries.
  65  *
  66  *      - modify:
  67  *              - if the entry being modified is a GROUP_OC and the
  68  *                MEMBER_AT attribute is modified, the MEMBER_OF value
  69  *                of the (existing) MEMBER_AT entries that are affected
  70  *                is modified according to the request:
  71  *                      - if a MEMBER is removed from the group,
  72  *                        delete the corresponding MEMBER_OF
  73  *                      - if a MEMBER is added to a group,
  74  *                        add the corresponding MEMBER_OF
  75  *
  76  *                We need to determine, from the database, if it is
  77  *                a GROUP_OC, and we need to check, from the
  78  *                modification list, if the MEMBER_AT attribute is being
  79  *                affected, and what MEMBER_AT values are affected.
  80  *
  81  *                if configured to do so, the entries corresponding to
  82  *                the MEMBER_AT values do not exist, and no relax control
  83  *                is issued, either:
  84  *                      - fail
  85  *                      - drop non-existing members
  86  *                (by default: don't muck with values)
  87  *
  88  *              - if configured to do so, the referenced GROUP exists,
  89  *                (the relax control is set) and the user has
  90  *                "manage" privileges, allow to add MEMBER_OF values to
  91  *                generic entries; the change is NOT automatically reflected
  92  *                in the MEMBER attribute of the GROUP referenced
  93  *                by the value of MEMBER_OF; a separate modification,
  94  *                with or without relax control, needs to be performed.
  95  *
  96  *      - modrdn:
  97  *              - if the entry being renamed is a GROUP, the MEMBER_OF
  98  *                value of the (existing) MEMBER objects is modified
  99  *                accordingly based on the newDN of the GROUP.
 100  *
 101  *                We need to determine, from the database, if it is
 102  *                a GROUP; the list of MEMBER objects is obtained from
 103  *                the database.
 104  *
 105  *                Non-existing MEMBER objects are ignored, since the
 106  *                MEMBER_AT is not being addressed by the operation.
 107  *
 108  *              - if the entry being renamed has the MEMBER_OF attribute,
 109  *                the corresponding MEMBER value must be modified in the
 110  *                respective group entries.
 111  *
 112  *
 113  *      - delete:
 114  *              - if the entry being deleted is a GROUP, the (existing)
 115  *                MEMBER objects are modified accordingly; a copy of the
 116  *                values of the MEMBER_AT is saved and, if the delete
 117  *                succeeds, the MEMBER_OF value of the (existing) MEMBER
 118  *                objects is deleted.
 119  *
 120  *                We need to determine, from the database, if it is
 121  *                a GROUP.
 122  *
 123  *                Non-existing MEMBER objects are ignored, since the entry
 124  *                is being deleted.
 125  *
 126  *              - if the entry being deleted has the MEMBER_OF attribute,
 127  *                the corresponding value of the MEMBER_AT must be deleted
 128  *                from the respective GROUP entries.
 129  */
 130
 131 #define SLAPD_MEMBEROF_ATTR     "memberOf"
 132
 133 static slap_overinst            memberof;
 134
 135 typedef struct memberof_t {
 136         struct berval           mo_dn;
 137         struct berval           mo_ndn;
 138
 139         ObjectClass             *mo_oc_group;
 140         AttributeDescription    *mo_ad_member;
 141         AttributeDescription    *mo_ad_memberof;
 142
 143         struct berval           mo_groupFilterstr;
 144         AttributeAssertion      mo_groupAVA;
 145         Filter                  mo_groupFilter;
 146
 147         struct berval           mo_memberFilterstr;
 148         Filter                  mo_memberFilter;
 149
 150         unsigned                mo_flags;
 151 #define MEMBEROF_NONE           0x00U
 152 #define MEMBEROF_FDANGLING_DROP 0x01U
 153 #define MEMBEROF_FDANGLING_ERROR        0x02U
 154 #define MEMBEROF_FDANGLING_MASK (MEMBEROF_FDANGLING_DROP|MEMBEROF_FDANGLING_ERROR)
 155 #define MEMBEROF_FREFINT        0x04U
 156 #define MEMBEROF_FREVERSE       0x08U
 157
 158 #define MEMBEROF_CHK(mo,f) \
 159         (((mo)->mo_flags & (f)) == (f))
 160 #define MEMBEROF_DANGLING_CHECK(mo) \
 161         ((mo)->mo_flags & MEMBEROF_FDANGLING_MASK)
 162 #define MEMBEROF_DANGLING_DROP(mo) \
 163         MEMBEROF_CHK((mo),MEMBEROF_FDANGLING_DROP)
 164 #define MEMBEROF_DANGLING_ERROR(mo) \
 165         MEMBEROF_CHK((mo),MEMBEROF_FDANGLING_ERROR)
 166 #define MEMBEROF_REFINT(mo) \
 167         MEMBEROF_CHK((mo),MEMBEROF_FREFINT)
 168 #define MEMBEROF_REVERSE(mo) \
 169         MEMBEROF_CHK((mo),MEMBEROF_FREVERSE)
 170 } memberof_t;
 171
 172 typedef enum memberof_is_t {
 173         MEMBEROF_IS_NONE = 0x00,
 174         MEMBEROF_IS_GROUP = 0x01,
 175         MEMBEROF_IS_MEMBER = 0x02,
 176         MEMBEROF_IS_BOTH = (MEMBEROF_IS_GROUP|MEMBEROF_IS_MEMBER)
 177 } memberof_is_t;
 178
 179 /*
 180  * failover storage for member attribute values of groups being deleted
 181  * handles [no]thread cases.
 182  */
 183 static BerVarray        saved_member_vals;
 184 static BerVarray        saved_memberof_vals;
 185
 186 static void
 187 memberof_saved_member_free( void *key, void *data )
 188 {
 189         ber_bvarray_free( (BerVarray)data );
 190 }
 191
 192 static BerVarray
 193 memberof_saved_member_get( Operation *op, void *keyp )
 194 {
 195         BerVarray       vals;
 196         BerVarray       *key = (BerVarray *)keyp;
 197
 198         assert( op );
 199
 200         if ( op->o_threadctx == NULL ) {
 201                 vals = *key;
 202                 *key = NULL;
 203
 204         } else {
 205                 ldap_pvt_thread_pool_getkey( op->o_threadctx,
 206                                 key, (void **)&vals, NULL );
 207                 ldap_pvt_thread_pool_setkey( op->o_threadctx,
 208                                 key, NULL, NULL );
 209         }
 210
 211         return vals;
 212 }
 213
 214 static void
 215 memberof_saved_member_set( Operation *op, void *keyp, BerVarray vals )
 216 {
 217         BerVarray       saved_vals = NULL;
 218         BerVarray       *key = (BerVarray*)keyp;
 219
 220         assert( op );
 221
 222         if ( vals ) {
 223                 ber_bvarray_dup_x( &saved_vals, vals, NULL );
 224         }
 225
 226         if ( op->o_threadctx == NULL ) {
 227                 if ( *key ) {
 228                         ber_bvarray_free( *key );
 229                 }
 230                 *key = saved_vals;
 231
 232         } else {
 233                 ldap_pvt_thread_pool_setkey( op->o_threadctx, key,
 234                                 saved_vals, memberof_saved_member_free );
 235         }
 236 }
 237
 238 typedef struct memberof_cookie_t {
 239         AttributeDescription    *ad;
 240         void                    *key;
 241         int                     foundit;
 242 } memberof_cookie_t;
 243
 244 static int
 245 memberof_isGroupOrMember_cb( Operation *op, SlapReply *rs )
 246 {
 247         if ( rs->sr_type == REP_SEARCH ) {
 248                 memberof_cookie_t       *mc;
 249
 250                 mc = (memberof_cookie_t *)op->o_callback->sc_private;
 251                 mc->foundit = 1;
 252         }
 253
 254         return 0;
 255 }
 256
 257 /*
 258  * callback for internal search that saves the member attribute values
 259  * of groups being deleted.
 260  */
 261 static int
 262 memberof_saveMember_cb( Operation *op, SlapReply *rs )
 263 {
 264         if ( rs->sr_type == REP_SEARCH ) {
 265                 memberof_cookie_t       *mc;
 266                 Attribute               *a;
 267
 268                 mc = (memberof_cookie_t *)op->o_callback->sc_private;
 269                 mc->foundit = 1;
 270
 271                 assert( rs->sr_entry );
 272                 assert( rs->sr_entry->e_attrs );
 273
 274                 a = attr_find( rs->sr_entry->e_attrs, mc->ad );
 275
 276                 assert( a != NULL );
 277
 278                 memberof_saved_member_set( op, mc->key, a->a_nvals );
 279
 280                 if ( attr_find( a->a_next, mc->ad ) != NULL ) {
 281                         Debug( LDAP_DEBUG_ANY,
 282                                 "%s: memberof_saveMember_cb(\"%s\"): "
 283                                 "more than one occurrence of \"%s\" "
 284                                 "attribute.\n",
 285                                 op->o_log_prefix,
 286                                 rs->sr_entry->e_name.bv_val,
 287                                 mc->ad->ad_cname.bv_val );
 288                 }
 289         }
 290
 291         return 0;
 292 }
 293
 294 /*
 295  * the delete hook performs an internal search that saves the member
 296  * attribute values of groups being deleted.
 297  */
 298 static int
 299 memberof_isGroupOrMember( Operation *op, memberof_is_t *iswhatp )
 300 {
 301         slap_overinst           *on = (slap_overinst *)op->o_bd->bd_info;
 302         memberof_t              *mo = (memberof_t *)on->on_bi.bi_private;
 303
 304         Operation               op2 = *op;
 305         SlapReply               rs2 = { REP_RESULT };
 306         slap_callback           cb = { 0 };
 307         memberof_cookie_t       mc;
 308         AttributeName           an[ 2 ];
 309
 310         memberof_is_t           iswhat = MEMBEROF_IS_NONE;
 311
 312         assert( iswhatp != NULL );
 313         assert( *iswhatp != MEMBEROF_IS_NONE );
 314
 315         cb.sc_private = &mc;
 316         if ( op->o_tag == LDAP_REQ_DELETE ) {
 317                 cb.sc_response = memberof_saveMember_cb;
 318
 319         } else {
 320                 cb.sc_response = memberof_isGroupOrMember_cb;
 321         }
 322
 323         op2.o_tag = LDAP_REQ_SEARCH;
 324         op2.o_callback = &cb;
 325         op2.o_dn = op->o_bd->be_rootdn;
 326         op2.o_ndn = op->o_bd->be_rootndn;
 327
 328         op2.ors_scope = LDAP_SCOPE_BASE;
 329         op2.ors_deref = LDAP_DEREF_NEVER;
 330         BER_BVZERO( &an[ 1 ].an_name );
 331         op2.ors_attrs = an;
 332         op2.ors_attrsonly = 0;
 333         op2.ors_limit = NULL;
 334         op2.ors_slimit = 1;
 335         op2.ors_tlimit = SLAP_NO_LIMIT;
 336
 337         if ( *iswhatp & MEMBEROF_IS_GROUP ) {
 338                 mc.ad = mo->mo_ad_member;
 339                 mc.key = &saved_member_vals;
 340                 mc.foundit = 0;
 341                 an[ 0 ].an_desc = mo->mo_ad_member;
 342                 an[ 0 ].an_name = an[ 0 ].an_desc->ad_cname;
 343                 op2.ors_filterstr = mo->mo_groupFilterstr;
 344                 op2.ors_filter = &mo->mo_groupFilter;
 345
 346                 op2.o_bd->bd_info = (BackendInfo *)on->on_info;
 347                 (void)op->o_bd->be_search( &op2, &rs2 );
 348                 op2.o_bd->bd_info = (BackendInfo *)on;
 349
 350                 if ( mc.foundit ) {
 351                         iswhat |= MEMBEROF_IS_GROUP;
 352
 353                 } else {
 354                         memberof_saved_member_set( op, mc.key, NULL );
 355                 }
 356         }
 357
 358         if ( *iswhatp & MEMBEROF_IS_MEMBER ) {
 359                 mc.ad = mo->mo_ad_memberof;
 360                 mc.key = &saved_memberof_vals;
 361                 mc.foundit = 0;
 362                 an[ 0 ].an_desc = mo->mo_ad_memberof;
 363                 an[ 0 ].an_name = an[ 0 ].an_desc->ad_cname;
 364                 op2.ors_filterstr = mo->mo_memberFilterstr;
 365                 op2.ors_filter = &mo->mo_memberFilter;
 366
 367                 op2.o_bd->bd_info = (BackendInfo *)on->on_info;
 368                 (void)op->o_bd->be_search( &op2, &rs2 );
 369                 op2.o_bd->bd_info = (BackendInfo *)on;
 370
 371                 if ( mc.foundit ) {
 372                         iswhat |= MEMBEROF_IS_MEMBER;
 373
 374                 } else {
 375                         memberof_saved_member_set( op, mc.key, NULL );
 376                 }
 377         }
 378
 379         *iswhatp = iswhat;
 380
 381         return LDAP_SUCCESS;
 382 }
 383
 384 /*
 385  * response callback that adds memberof values when a group is modified.
 386  */
 387 static int
 388 memberof_value_modify(
 389         Operation               *op,
 390         SlapReply               *rs,
 391         struct berval           *ndn,
 392         AttributeDescription    *ad,
 393         struct berval           *old_dn,
 394         struct berval           *old_ndn,
 395         struct berval           *new_dn,
 396         struct berval           *new_ndn )
 397 {
 398         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 399         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
 400
 401         Operation       op2 = *op;
 402         SlapReply       rs2 = { REP_RESULT };
 403         slap_callback   cb = { NULL, slap_null_cb, NULL, NULL };
 404         Modifications   mod[ 2 ] = { { { 0 } } }, *ml;
 405         struct berval   values[ 4 ], nvalues[ 4 ];
 406
 407         op2.o_tag = LDAP_REQ_MODIFY;
 408
 409         op2.o_req_dn = *ndn;
 410         op2.o_req_ndn = *ndn;
 411
 412         op2.o_bd->bd_info = (BackendInfo *)on->on_info;
 413
 414         op2.o_callback = &cb;
 415         op2.o_dn = op->o_bd->be_rootdn;
 416         op2.o_ndn = op->o_bd->be_rootndn;
 417
 418         ml = &mod[ 0 ];
 419         ml->sml_values = &values[ 0 ];
 420         ml->sml_values[ 0 ] = mo->mo_dn;
 421         BER_BVZERO( &ml->sml_values[ 1 ] );
 422         ml->sml_nvalues = &nvalues[ 0 ];
 423         ml->sml_nvalues[ 0 ] = mo->mo_ndn;
 424         BER_BVZERO( &ml->sml_nvalues[ 1 ] );
 425         ml->sml_desc = slap_schema.si_ad_modifiersName;
 426         ml->sml_type = ml->sml_desc->ad_cname;
 427         ml->sml_op = LDAP_MOD_REPLACE;
 428         ml->sml_flags = SLAP_MOD_INTERNAL;
 429         ml->sml_next = NULL;
 430         op2.orm_modlist = ml;
 431
 432         ml = &mod[ 1 ];
 433         ml->sml_values = &values[ 2 ];
 434         BER_BVZERO( &ml->sml_values[ 1 ] );
 435         ml->sml_nvalues = &nvalues[ 2 ];
 436         BER_BVZERO( &ml->sml_nvalues[ 1 ] );
 437         ml->sml_desc = ad;
 438         ml->sml_type = ml->sml_desc->ad_cname;
 439         ml->sml_flags = SLAP_MOD_INTERNAL;
 440         ml->sml_next = NULL;
 441         op2.orm_modlist->sml_next = ml;
 442
 443         if ( new_ndn != NULL ) {
 444                 assert( !BER_BVISNULL( new_dn ) );
 445                 assert( !BER_BVISNULL( new_ndn ) );
 446
 447                 ml->sml_op = LDAP_MOD_ADD;
 448
 449                 ml->sml_values[ 0 ] = *new_dn;
 450                 ml->sml_nvalues[ 0 ] = *new_ndn;
 451
 452                 (void)op->o_bd->be_modify( &op2, &rs2 );
 453
 454                 assert( op2.orm_modlist == &mod[ 0 ] );
 455                 assert( op2.orm_modlist->sml_next == &mod[ 1 ] );
 456                 ml = op2.orm_modlist->sml_next->sml_next;
 457                 if ( ml != NULL ) {
 458                         slap_mods_free( ml, 1 );
 459                 }
 460         }
 461
 462         if ( old_ndn != NULL ) {
 463                 assert( !BER_BVISNULL( old_dn ) );
 464                 assert( !BER_BVISNULL( old_ndn ) );
 465
 466                 ml->sml_op = LDAP_MOD_DELETE;
 467
 468                 ml->sml_values[ 0 ] = *old_dn;
 469                 ml->sml_nvalues[ 0 ] = *old_ndn;
 470
 471                 (void)op->o_bd->be_modify( &op2, &rs2 );
 472
 473                 assert( op2.orm_modlist == &mod[ 0 ] );
 474                 assert( op2.orm_modlist->sml_next == &mod[ 1 ] );
 475                 ml = op2.orm_modlist->sml_next->sml_next;
 476                 if ( ml != NULL ) {
 477                         slap_mods_free( ml, 1 );
 478                 }
 479         }
 480
 481         /* FIXME: if old_group_ndn doesn't exist, both delete __and__
 482          * add will fail; better split in two operations, although
 483          * not optimal in terms of performance.  At least it would
 484          * move towards self-repairing capabilities. */
 485
 486         op2.o_bd->bd_info = (BackendInfo *)on;
 487
 488         return rs2.sr_err;
 489 }
 490
 491 static int
 492 memberof_op_add( Operation *op, SlapReply *rs )
 493 {
 494         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 495         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
 496
 497         Attribute       **ap, **map = NULL;
 498         int             rc = SLAP_CB_CONTINUE;
 499         int             i;
 500         struct berval   save_dn, save_ndn;
 501
 502         if ( op->ora_e->e_attrs == NULL ) {
 503                 /* FIXME: global overlay; need to deal with */
 504                 Debug( LDAP_DEBUG_ANY, "%s: memberof_op_add(\"%s\"): "
 505                         "consistency checks not implemented when overlay "
 506                         "is instantiated as global.\n",
 507                         op->o_log_prefix, op->o_req_dn.bv_val, 0 );
 508                 return SLAP_CB_CONTINUE;
 509         }
 510
 511         if ( MEMBEROF_REVERSE( mo ) ) {
 512                 for ( ap = &op->ora_e->e_attrs; *ap; ap = &(*ap)->a_next ) {
 513                         Attribute       *a = *ap;
 514
 515                         if ( a->a_desc == mo->mo_ad_memberof ) {
 516                                 map = ap;
 517                                 break;
 518                         }
 519                 }
 520         }
 521
 522         save_dn = op->o_dn;
 523         save_ndn = op->o_ndn;
 524
 525         if ( MEMBEROF_DANGLING_CHECK( mo )
 526                         && !get_relax( op )
 527                         && is_entry_objectclass( op->ora_e, mo->mo_oc_group, 0 ) )
 528         {
 529                 op->o_dn = op->o_bd->be_rootdn;
 530                 op->o_dn = op->o_bd->be_rootndn;
 531                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 532
 533                 for ( ap = &op->ora_e->e_attrs; *ap; ) {
 534                         Attribute       *a = *ap;
 535
 536                         if ( !is_ad_subtype( a->a_desc, mo->mo_ad_member ) ) {
 537                                 ap = &a->a_next;
 538                                 continue;
 539                         }
 540
 541                         assert( a->a_nvals != NULL );
 542
 543                         for ( i = 0; !BER_BVISNULL( &a->a_nvals[ i ] ); i++ ) {
 544                                 Entry           *e;
 545
 546                                 /* FIXME: entry_get_rw does not pass
 547                                  * thru overlays yet; when it does, we
 548                                  * might need to make a copy of the DN */
 549
 550                                 rc = be_entry_get_rw( op, &a->a_nvals[ i ],
 551                                                 NULL, NULL, 0, &e );
 552                                 if ( rc == LDAP_SUCCESS ) {
 553                                         be_entry_release_r( op, e );
 554                                         continue;
 555                                 }
 556
 557                                 if ( MEMBEROF_DANGLING_ERROR( mo ) ) {
 558                                         rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 559                                         rs->sr_text = "adding non-existing object "
 560                                                 "as group member";
 561                                         send_ldap_result( op, rs );
 562                                         goto done;
 563                                 }
 564
 565                                 if ( MEMBEROF_DANGLING_DROP( mo ) ) {
 566                                         int     j;
 567
 568                                         Debug( LDAP_DEBUG_ANY, "%s: memberof_op_add(\"%s\"): "
 569                                                 "member=\"%s\" does not exist (stripping...)\n",
 570                                                 op->o_log_prefix, op->ora_e->e_name.bv_val,
 571                                                 a->a_vals[ i ].bv_val );
 572
 573                                         for ( j = i + 1; !BER_BVISNULL( &a->a_nvals[ j ] ); j++ );
 574                                         ber_memfree( a->a_vals[ i ].bv_val );
 575                                         BER_BVZERO( &a->a_vals[ i ] );
 576                                         if ( a->a_nvals != a->a_vals ) {
 577                                                 ber_memfree( a->a_nvals[ i ].bv_val );
 578                                                 BER_BVZERO( &a->a_nvals[ i ] );
 579                                         }
 580                                         if ( j - i == 1 ) {
 581                                                 break;
 582                                         }
 583
 584                                         AC_MEMCPY( &a->a_vals[ i ], &a->a_vals[ i + 1 ],
 585                                                 sizeof( struct berval ) * ( j - i ) );
 586                                         if ( a->a_nvals != a->a_vals ) {
 587                                                 AC_MEMCPY( &a->a_nvals[ i ], &a->a_nvals[ i + 1 ],
 588                                                         sizeof( struct berval ) * ( j - i ) );
 589                                         }
 590                                         i--;
 591                                 }
 592                         }
 593
 594                         /* If all values have been removed,
 595                          * remove the attribute itself. */
 596                         if ( BER_BVISNULL( &a->a_nvals[ 0 ] ) ) {
 597                                 *ap = a->a_next;
 598                                 attr_free( a );
 599
 600                         } else {
 601                                 ap = &a->a_next;
 602                         }
 603                 }
 604                 op->o_dn = save_dn;
 605                 op->o_ndn = save_ndn;
 606                 op->o_bd->bd_info = (BackendInfo *)on;
 607         }
 608
 609         if ( map != NULL ) {
 610                 Attribute               *a = *map;
 611                 AccessControlState      acl_state = ACL_STATE_INIT;
 612
 613                 for ( i = 0; !BER_BVISNULL( &a->a_nvals[ i ] ); i++ ) {
 614                         Entry           *e;
 615
 616                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 617                         /* access is checked with the original identity */
 618                         rc = access_allowed( op, op->ora_e, mo->mo_ad_memberof,
 619                                         &a->a_nvals[ i ], ACL_WADD,
 620                                         &acl_state );
 621                         if ( rc == 0 ) {
 622                                 rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 623                                 rs->sr_text = NULL;
 624                                 send_ldap_result( op, rs );
 625                                 goto done;
 626                         }
 627                         rc = be_entry_get_rw( op, &a->a_nvals[ i ],
 628                                         NULL, NULL, 0, &e );
 629                         op->o_bd->bd_info = (BackendInfo *)on;
 630                         if ( rc != LDAP_SUCCESS ) {
 631                                 if ( get_relax( op ) ) {
 632                                         continue;
 633                                 }
 634
 635                                 if ( MEMBEROF_DANGLING_ERROR( mo ) ) {
 636                                         rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 637                                         rs->sr_text = "adding non-existing object "
 638                                                 "as memberof";
 639                                         send_ldap_result( op, rs );
 640                                         goto done;
 641                                 }
 642
 643                                 if ( MEMBEROF_DANGLING_DROP( mo ) ) {
 644                                         int     j;
 645
 646                                         Debug( LDAP_DEBUG_ANY, "%s: memberof_op_add(\"%s\"): "
 647                                                 "memberof=\"%s\" does not exist (stripping...)\n",
 648                                                 op->o_log_prefix, op->ora_e->e_name.bv_val,
 649                                                 a->a_nvals[ i ].bv_val );
 650
 651                                         for ( j = i + 1; !BER_BVISNULL( &a->a_nvals[ j ] ); j++ );
 652                                         ber_memfree( a->a_vals[ i ].bv_val );
 653                                         BER_BVZERO( &a->a_vals[ i ] );
 654                                         if ( a->a_nvals != a->a_vals ) {
 655                                                 ber_memfree( a->a_nvals[ i ].bv_val );
 656                                                 BER_BVZERO( &a->a_nvals[ i ] );
 657                                         }
 658                                         if ( j - i == 1 ) {
 659                                                 break;
 660                                         }
 661
 662                                         AC_MEMCPY( &a->a_vals[ i ], &a->a_vals[ i + 1 ],
 663                                                 sizeof( struct berval ) * ( j - i ) );
 664                                         if ( a->a_nvals != a->a_vals ) {
 665                                                 AC_MEMCPY( &a->a_nvals[ i ], &a->a_nvals[ i + 1 ],
 666                                                         sizeof( struct berval ) * ( j - i ) );
 667                                         }
 668                                         i--;
 669                                 }
 670
 671                                 continue;
 672                         }
 673
 674                         /* access is checked with the original identity */
 675                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 676                         rc = access_allowed( op, e, mo->mo_ad_member,
 677                                         &op->o_req_ndn, ACL_WADD, NULL );
 678                         be_entry_release_r( op, e );
 679                         op->o_bd->bd_info = (BackendInfo *)on;
 680
 681                         if ( !rc ) {
 682                                 rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 683                                 rs->sr_text = "insufficient access to object referenced by memberof";
 684                                 send_ldap_result( op, rs );
 685                                 goto done;
 686                         }
 687                 }
 688
 689                 if ( BER_BVISNULL( &a->a_nvals[ 0 ] ) ) {
 690                         *map = a->a_next;
 691                         attr_free( a );
 692                 }
 693         }
 694
 695         rc = SLAP_CB_CONTINUE;
 696
 697 done:;
 698         op->o_dn = save_dn;
 699         op->o_ndn = save_ndn;
 700         op->o_bd->bd_info = (BackendInfo *)on;
 701
 702         return rc;
 703 }
 704
 705 static int
 706 memberof_op_delete( Operation *op, SlapReply *rs )
 707 {
 708         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 709         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
 710
 711         memberof_is_t   iswhat = MEMBEROF_IS_GROUP;
 712
 713         if ( MEMBEROF_REFINT( mo ) ) {
 714                 iswhat = MEMBEROF_IS_BOTH;
 715         }
 716
 717         memberof_isGroupOrMember( op, &iswhat );
 718
 719         return SLAP_CB_CONTINUE;
 720 }
 721
 722 static int
 723 memberof_op_modify( Operation *op, SlapReply *rs )
 724 {
 725         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 726         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
 727
 728         Modifications   **mlp, **mmlp = NULL;
 729         int             rc = SLAP_CB_CONTINUE;
 730         struct berval   save_dn, save_ndn;
 731         memberof_is_t   iswhat = MEMBEROF_IS_GROUP;
 732
 733         if ( MEMBEROF_REVERSE( mo ) ) {
 734                 for ( mlp = &op->orm_modlist; *mlp; mlp = &(*mlp)->sml_next ) {
 735                         Modifications   *ml = *mlp;
 736
 737                         if ( ml->sml_desc == mo->mo_ad_memberof ) {
 738                                 mmlp = mlp;
 739                                 break;
 740                         }
 741                 }
 742         }
 743
 744         save_dn = op->o_dn;
 745         save_ndn = op->o_ndn;
 746
 747         if ( MEMBEROF_DANGLING_CHECK( mo )
 748                         && !get_relax( op )
 749                         && memberof_isGroupOrMember( op, &iswhat ) == LDAP_SUCCESS
 750                         && ( iswhat & MEMBEROF_IS_GROUP ) )
 751         {
 752                 op->o_dn = op->o_bd->be_rootdn;
 753                 op->o_dn = op->o_bd->be_rootndn;
 754                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 755
 756                 assert( op->orm_modlist != NULL );
 757
 758                 for ( mlp = &op->orm_modlist; *mlp; ) {
 759                         Modifications   *ml = *mlp;
 760                         int             i;
 761
 762                         if ( !is_ad_subtype( ml->sml_desc, mo->mo_ad_member ) ) {
 763                                 mlp = &ml->sml_next;
 764                                 continue;
 765                         }
 766
 767                         switch ( ml->sml_op ) {
 768                         case LDAP_MOD_DELETE:
 769                                 /* we don't care about cancellations: if the value
 770                                  * exists, fine; if it doesn't, we let the underlying
 771                                  * database fail as appropriate; */
 772                                 mlp = &ml->sml_next;
 773                                 break;
 774
 775                         case LDAP_MOD_REPLACE:
 776                         case LDAP_MOD_ADD:
 777                                 /* NOTE: right now, the attributeType we use
 778                                  * for member must have a normalized value */
 779                                 assert( ml->sml_nvalues );
 780
 781                                 for ( i = 0; !BER_BVISNULL( &ml->sml_nvalues[ i ] ); i++ ) {
 782                                         int             rc;
 783                                         Entry           *e;
 784
 785                                         if ( be_entry_get_rw( op, &ml->sml_nvalues[ i ],
 786                                                         NULL, NULL, 0, &e ) == LDAP_SUCCESS )
 787                                         {
 788                                                 be_entry_release_r( op, e );
 789                                                 continue;
 790                                         }
 791
 792                                         if ( MEMBEROF_DANGLING_ERROR( mo ) ) {
 793                                                 rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 794                                                 rs->sr_text = "adding non-existing object "
 795                                                         "as group member";
 796                                                 send_ldap_result( op, rs );
 797                                                 goto done;
 798                                         }
 799
 800                                         if ( MEMBEROF_DANGLING_DROP( mo ) ) {
 801                                                 int     j;
 802
 803                                                 Debug( LDAP_DEBUG_ANY, "%s: memberof_op_modify(\"%s\"): "
 804                                                         "member=\"%s\" does not exist (stripping...)\n",
 805                                                         op->o_log_prefix, op->o_req_dn.bv_val,
 806                                                         ml->sml_nvalues[ i ].bv_val );
 807
 808                                                 for ( j = i + 1; !BER_BVISNULL( &ml->sml_nvalues[ j ] ); j++ );
 809                                                 ber_memfree( ml->sml_values[ i ].bv_val );
 810                                                 BER_BVZERO( &ml->sml_values[ i ] );
 811                                                 ber_memfree( ml->sml_nvalues[ i ].bv_val );
 812                                                 BER_BVZERO( &ml->sml_nvalues[ i ] );
 813                                                 if ( j - i == 1 ) {
 814                                                         break;
 815                                                 }
 816
 817                                                 AC_MEMCPY( &ml->sml_values[ i ], &ml->sml_values[ i + 1 ],
 818                                                         sizeof( struct berval ) * ( j - i ) );
 819                                                 AC_MEMCPY( &ml->sml_nvalues[ i ], &ml->sml_nvalues[ i + 1 ],
 820                                                         sizeof( struct berval ) * ( j - i ) );
 821                                                 i--;
 822                                         }
 823                                 }
 824
 825                                 if ( BER_BVISNULL( &ml->sml_nvalues[ 0 ] ) ) {
 826                                         *mlp = ml->sml_next;
 827                                         slap_mod_free( &ml->sml_mod, 0 );
 828                                         free( ml );
 829
 830                                 } else {
 831                                         mlp = &ml->sml_next;
 832                                 }
 833
 834                                 break;
 835
 836                         default:
 837                                 assert( 0 );
 838                         }
 839                 }
 840         }
 841
 842         if ( mmlp != NULL ) {
 843                 Modifications   *ml = *mmlp;
 844                 int             i;
 845                 Entry           *target;
 846
 847                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 848                 rc = be_entry_get_rw( op, &op->o_req_ndn,
 849                                 NULL, NULL, 0, &target );
 850                 op->o_bd->bd_info = (BackendInfo *)on;
 851                 if ( rc != LDAP_SUCCESS ) {
 852                         rc = rs->sr_err = LDAP_NO_SUCH_OBJECT;
 853                         send_ldap_result( op, rs );
 854                         goto done;
 855                 }
 856
 857                 switch ( ml->sml_op ) {
 858                 case LDAP_MOD_DELETE:
 859                         if ( ml->sml_nvalues != NULL ) {
 860                                 AccessControlState      acl_state = ACL_STATE_INIT;
 861
 862                                 for ( i = 0; !BER_BVISNULL( &ml->sml_nvalues[ i ] ); i++ ) {
 863                                         Entry           *e;
 864
 865                                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 866                                         /* access is checked with the original identity */
 867                                         rc = access_allowed( op, target,
 868                                                         mo->mo_ad_memberof,
 869                                                         &ml->sml_nvalues[ i ],
 870                                                         ACL_WDEL,
 871                                                         &acl_state );
 872                                         if ( rc == 0 ) {
 873                                                 rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 874                                                 rs->sr_text = NULL;
 875                                                 send_ldap_result( op, rs );
 876                                                 goto done2;
 877                                         }
 878
 879                                         rc = be_entry_get_rw( op, &ml->sml_nvalues[ i ],
 880                                                         NULL, NULL, 0, &e );
 881                                         op->o_bd->bd_info = (BackendInfo *)on;
 882                                         if ( rc != LDAP_SUCCESS ) {
 883                                                 if ( get_relax( op ) ) {
 884                                                         continue;
 885                                                 }
 886
 887                                                 if ( MEMBEROF_DANGLING_ERROR( mo ) ) {
 888                                                         rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 889                                                         rs->sr_text = "deleting non-existing object "
 890                                                                 "as memberof";
 891                                                         send_ldap_result( op, rs );
 892                                                         goto done2;
 893                                                 }
 894
 895                                                 if ( MEMBEROF_DANGLING_DROP( mo ) ) {
 896                                                         int     j;
 897
 898                                                         Debug( LDAP_DEBUG_ANY, "%s: memberof_op_modify(\"%s\"): "
 899                                                                 "memberof=\"%s\" does not exist (stripping...)\n",
 900                                                                 op->o_log_prefix, op->o_req_ndn.bv_val,
 901                                                                 ml->sml_nvalues[ i ].bv_val );
 902
 903                                                         for ( j = i + 1; !BER_BVISNULL( &ml->sml_nvalues[ j ] ); j++ );
 904                                                         ber_memfree( ml->sml_values[ i ].bv_val );
 905                                                         BER_BVZERO( &ml->sml_values[ i ] );
 906                                                         if ( ml->sml_nvalues != ml->sml_values ) {
 907                                                                 ber_memfree( ml->sml_nvalues[ i ].bv_val );
 908                                                                 BER_BVZERO( &ml->sml_nvalues[ i ] );
 909                                                         }
 910                                                         if ( j - i == 1 ) {
 911                                                                 break;
 912                                                         }
 913
 914                                                         AC_MEMCPY( &ml->sml_values[ i ], &ml->sml_values[ i + 1 ],
 915                                                                 sizeof( struct berval ) * ( j - i ) );
 916                                                         if ( ml->sml_nvalues != ml->sml_values ) {
 917                                                                 AC_MEMCPY( &ml->sml_nvalues[ i ], &ml->sml_nvalues[ i + 1 ],
 918                                                                         sizeof( struct berval ) * ( j - i ) );
 919                                                         }
 920                                                         i--;
 921                                                 }
 922
 923                                                 continue;
 924                                         }
 925
 926                                         /* access is checked with the original identity */
 927                                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 928                                         rc = access_allowed( op, e, mo->mo_ad_member,
 929                                                         &op->o_req_ndn,
 930                                                         ACL_WDEL, NULL );
 931                                         be_entry_release_r( op, e );
 932                                         op->o_bd->bd_info = (BackendInfo *)on;
 933
 934                                         if ( !rc ) {
 935                                                 rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 936                                                 rs->sr_text = "insufficient access to object referenced by memberof";
 937                                                 send_ldap_result( op, rs );
 938                                                 goto done;
 939                                         }
 940                                 }
 941
 942                                 if ( BER_BVISNULL( &ml->sml_nvalues[ 0 ] ) ) {
 943                                         *mmlp = ml->sml_next;
 944                                         slap_mod_free( &ml->sml_mod, 0 );
 945                                         free( ml );
 946                                 }
 947
 948                                 break;
 949                         }
 950                         /* fall thru */
 951
 952                 case LDAP_MOD_REPLACE:
 953
 954                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 955                         /* access is checked with the original identity */
 956                         rc = access_allowed( op, target,
 957                                         mo->mo_ad_memberof,
 958                                         NULL,
 959                                         ACL_WDEL, NULL );
 960                         op->o_bd->bd_info = (BackendInfo *)on;
 961                         if ( rc == 0 ) {
 962                                 rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 963                                 rs->sr_text = NULL;
 964                                 send_ldap_result( op, rs );
 965                                 goto done2;
 966                         }
 967
 968                         if ( ml->sml_op == LDAP_MOD_DELETE ) {
 969                                 break;
 970                         }
 971                         /* fall thru */
 972
 973                 case LDAP_MOD_ADD: {
 974                         AccessControlState      acl_state = ACL_STATE_INIT;
 975
 976                         for ( i = 0; !BER_BVISNULL( &ml->sml_nvalues[ i ] ); i++ ) {
 977                                 Entry           *e;
 978
 979                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 980                                 /* access is checked with the original identity */
 981                                 rc = access_allowed( op, target,
 982                                                 mo->mo_ad_memberof,
 983                                                 &ml->sml_nvalues[ i ],
 984                                                 ACL_WADD,
 985                                                 &acl_state );
 986                                 if ( rc == 0 ) {
 987                                         rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 988                                         rs->sr_text = NULL;
 989                                         send_ldap_result( op, rs );
 990                                         goto done2;
 991                                 }
 992
 993                                 rc = be_entry_get_rw( op, &ml->sml_nvalues[ i ],
 994                                                 NULL, NULL, 0, &e );
 995                                 op->o_bd->bd_info = (BackendInfo *)on;
 996                                 if ( rc != LDAP_SUCCESS ) {
 997                                         if ( MEMBEROF_DANGLING_ERROR( mo ) ) {
 998                                                 rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 999                                                 rs->sr_text = "adding non-existing object "
1000                                                         "as memberof";
1001                                                 send_ldap_result( op, rs );
1002                                                 goto done2;
1003                                         }
1004
1005                                         if ( MEMBEROF_DANGLING_DROP( mo ) ) {
1006                                                 int     j;
1007
1008                                                 Debug( LDAP_DEBUG_ANY, "%s: memberof_op_modify(\"%s\"): "
1009                                                         "memberof=\"%s\" does not exist (stripping...)\n",
1010                                                         op->o_log_prefix, op->o_req_ndn.bv_val,
1011                                                         ml->sml_nvalues[ i ].bv_val );
1012
1013                                                 for ( j = i + 1; !BER_BVISNULL( &ml->sml_nvalues[ j ] ); j++ );
1014                                                 ber_memfree( ml->sml_values[ i ].bv_val );
1015                                                 BER_BVZERO( &ml->sml_values[ i ] );
1016                                                 if ( ml->sml_nvalues != ml->sml_values ) {
1017                                                         ber_memfree( ml->sml_nvalues[ i ].bv_val );
1018                                                         BER_BVZERO( &ml->sml_nvalues[ i ] );
1019                                                 }
1020                                                 if ( j - i == 1 ) {
1021                                                         break;
1022                                                 }
1023
1024                                                 AC_MEMCPY( &ml->sml_values[ i ], &ml->sml_values[ i + 1 ],
1025                                                         sizeof( struct berval ) * ( j - i ) );
1026                                                 if ( ml->sml_nvalues != ml->sml_values ) {
1027                                                         AC_MEMCPY( &ml->sml_nvalues[ i ], &ml->sml_nvalues[ i + 1 ],
1028                                                                 sizeof( struct berval ) * ( j - i ) );
1029                                                 }
1030                                                 i--;
1031                                         }
1032
1033                                         continue;
1034                                 }
1035
1036                                 /* access is checked with the original identity */
1037                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1038                                 rc = access_allowed( op, e, mo->mo_ad_member,
1039                                                 &op->o_req_ndn,
1040                                                 ACL_WDEL, NULL );
1041                                 be_entry_release_r( op, e );
1042                                 op->o_bd->bd_info = (BackendInfo *)on;
1043
1044                                 if ( !rc ) {
1045                                         rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1046                                         rs->sr_text = "insufficient access to object referenced by memberof";
1047                                         send_ldap_result( op, rs );
1048                                         goto done;
1049                                 }
1050                         }
1051
1052                         if ( BER_BVISNULL( &ml->sml_nvalues[ 0 ] ) ) {
1053                                 *mmlp = ml->sml_next;
1054                                 slap_mod_free( &ml->sml_mod, 0 );
1055                                 free( ml );
1056                         }
1057
1058                         } break;
1059
1060                 default:
1061                         assert( 0 );
1062                 }
1063
1064 done2:;
1065                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1066                 be_entry_release_r( op, target );
1067                 op->o_bd->bd_info = (BackendInfo *)on;
1068         }
1069
1070         rc = SLAP_CB_CONTINUE;
1071
1072 done:;
1073         op->o_dn = save_dn;
1074         op->o_ndn = save_ndn;
1075         op->o_bd->bd_info = (BackendInfo *)on;
1076
1077         return rc;
1078 }
1079
1080 /*
1081  * response callback that adds memberof values when a group is added.
1082  */
1083 static int
1084 memberof_res_add( Operation *op, SlapReply *rs )
1085 {
1086         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
1087         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1088
1089         int             i;
1090
1091         if ( MEMBEROF_REVERSE( mo ) ) {
1092                 Attribute       *ma;
1093
1094                 ma = attr_find( op->ora_e->e_attrs, mo->mo_ad_memberof );
1095                 if ( ma != NULL ) {
1096                         Operation       op2 = *op;
1097                         SlapReply       rs2 = { 0 };
1098
1099                         /* relax is required to allow to add
1100                          * a non-existing member */
1101                         op2.o_relax = SLAP_CONTROL_CRITICAL;
1102
1103                         for ( i = 0; !BER_BVISNULL( &ma->a_nvals[ i ] ); i++ ) {
1104
1105                                 /* the modification is attempted
1106                                  * with the original identity */
1107                                 (void)memberof_value_modify( &op2, &rs2,
1108                                         &ma->a_nvals[ i ], mo->mo_ad_member,
1109                                         NULL, NULL, &op->o_req_dn, &op->o_req_ndn );
1110                         }
1111                 }
1112         }
1113
1114         if ( is_entry_objectclass( op->ora_e, mo->mo_oc_group, 0 ) ) {
1115                 Attribute       *a;
1116
1117                 for ( a = attrs_find( op->ora_e->e_attrs, mo->mo_ad_member );
1118                                 a != NULL;
1119                                 a = attrs_find( a->a_next, mo->mo_ad_member ) )
1120                 {
1121                         for ( i = 0; !BER_BVISNULL( &a->a_nvals[ i ] ); i++ ) {
1122                                 (void)memberof_value_modify( op, rs,
1123                                                 &a->a_nvals[ i ],
1124                                                 mo->mo_ad_memberof,
1125                                                 NULL, NULL,
1126                                                 &op->o_req_dn,
1127                                                 &op->o_req_ndn );
1128                         }
1129                 }
1130         }
1131
1132         return SLAP_CB_CONTINUE;
1133 }
1134
1135 /*
1136  * response callback that deletes memberof values when a group is deleted.
1137  */
1138 static int
1139 memberof_res_delete( Operation *op, SlapReply *rs )
1140 {
1141         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
1142         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1143
1144         BerVarray       vals;
1145         int             i;
1146
1147         vals = memberof_saved_member_get( op, &saved_member_vals );
1148         if ( vals != NULL ) {
1149                 for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1150                         (void)memberof_value_modify( op, rs,
1151                                         &vals[ i ], mo->mo_ad_memberof,
1152                                         &op->o_req_dn, &op->o_req_ndn,
1153                                         NULL, NULL );
1154                 }
1155
1156                 ber_bvarray_free( vals );
1157         }
1158
1159         if ( MEMBEROF_REFINT( mo ) ) {
1160                 vals = memberof_saved_member_get( op, &saved_memberof_vals );
1161                 if ( vals != NULL ) {
1162                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1163                                 (void)memberof_value_modify( op, rs,
1164                                                 &vals[ i ], mo->mo_ad_member,
1165                                                 &op->o_req_dn, &op->o_req_ndn,
1166                                                 NULL, NULL );
1167                         }
1168
1169                         ber_bvarray_free( vals );
1170                 }
1171         }
1172
1173         return SLAP_CB_CONTINUE;
1174 }
1175
1176 /*
1177  * response callback that adds/deletes memberof values when a group
1178  * is modified.
1179  */
1180 static int
1181 memberof_res_modify( Operation *op, SlapReply *rs )
1182 {
1183         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
1184         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1185
1186         int             i, rc;
1187         Modifications   *ml, *mml = NULL;
1188         BerVarray       vals;
1189         memberof_is_t   iswhat = MEMBEROF_IS_GROUP;
1190
1191         if ( MEMBEROF_REVERSE( mo ) ) {
1192                 for ( ml = op->orm_modlist; ml; ml = ml->sml_next ) {
1193                         if ( ml->sml_desc == mo->mo_ad_memberof ) {
1194                                 mml = ml;
1195                                 break;
1196                         }
1197                 }
1198         }
1199
1200         if ( mml != NULL ) {
1201                 BerVarray       vals = mml->sml_nvalues;
1202
1203                 switch ( mml->sml_op ) {
1204                 case LDAP_MOD_DELETE:
1205                         if ( vals != NULL ) {
1206                                 for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1207                                         memberof_value_modify( op, rs,
1208                                                         &vals[ i ], mo->mo_ad_member,
1209                                                         &op->o_req_dn, &op->o_req_ndn,
1210                                                         NULL, NULL );
1211                                 }
1212                                 break;
1213                         }
1214                         /* fall thru */
1215
1216                 case LDAP_MOD_REPLACE:
1217                         /* delete all ... */
1218                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
1219                         rc = backend_attribute( op, NULL, &op->o_req_ndn,
1220                                         mo->mo_ad_memberof, &vals, ACL_READ );
1221                         op->o_bd->bd_info = (BackendInfo *)on;
1222                         if ( rc == LDAP_SUCCESS ) {
1223                                 for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1224                                         (void)memberof_value_modify( op, rs,
1225                                                         &vals[ i ], mo->mo_ad_member,
1226                                                         &op->o_req_dn, &op->o_req_ndn,
1227                                                         NULL, NULL );
1228                                 }
1229                                 ber_bvarray_free_x( vals, op->o_tmpmemctx );
1230                         }
1231
1232                         if ( ml->sml_op == LDAP_MOD_DELETE ) {
1233                                 break;
1234                         }
1235                         /* fall thru */
1236
1237                 case LDAP_MOD_ADD:
1238                         assert( vals != NULL );
1239
1240                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1241                                 memberof_value_modify( op, rs,
1242                                                 &vals[ i ], mo->mo_ad_member,
1243                                                 NULL, NULL,
1244                                                 &op->o_req_dn, &op->o_req_ndn );
1245                         }
1246                         break;
1247
1248                 default:
1249                         assert( 0 );
1250                 }
1251         }
1252
1253         if ( memberof_isGroupOrMember( op, &iswhat ) == LDAP_SUCCESS
1254                         && ( iswhat & MEMBEROF_IS_GROUP ) )
1255         {
1256                 for ( ml = op->orm_modlist; ml; ml = ml->sml_next ) {
1257                         if ( ml->sml_desc != mo->mo_ad_member ) {
1258                                 continue;
1259                         }
1260
1261                         switch ( ml->sml_op ) {
1262                         case LDAP_MOD_DELETE:
1263                                 vals = ml->sml_nvalues;
1264                                 if ( vals != NULL ) {
1265                                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1266                                                 memberof_value_modify( op, rs,
1267                                                                 &vals[ i ], mo->mo_ad_memberof,
1268                                                                 &op->o_req_dn, &op->o_req_ndn,
1269                                                                 NULL, NULL );
1270                                         }
1271                                         break;
1272                                 }
1273                                 /* fall thru */
1274
1275                         case LDAP_MOD_REPLACE:
1276                                 /* delete all ... */
1277                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1278                                 rc = backend_attribute( op, NULL, &op->o_req_ndn,
1279                                                 mo->mo_ad_member, &vals, ACL_READ );
1280                                 op->o_bd->bd_info = (BackendInfo *)on;
1281                                 if ( rc == LDAP_SUCCESS ) {
1282                                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1283                                                 (void)memberof_value_modify( op, rs,
1284                                                                 &vals[ i ], mo->mo_ad_memberof,
1285                                                                 &op->o_req_dn, &op->o_req_ndn,
1286                                                                 NULL, NULL );
1287                                         }
1288                                         ber_bvarray_free_x( vals, op->o_tmpmemctx );
1289                                 }
1290
1291                                 if ( ml->sml_op == LDAP_MOD_DELETE ) {
1292                                         break;
1293                                 }
1294                                 /* fall thru */
1295
1296                         case LDAP_MOD_ADD:
1297                                 assert( ml->sml_nvalues != NULL );
1298                                 vals = ml->sml_nvalues;
1299                                 for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1300                                         memberof_value_modify( op, rs,
1301                                                         &vals[ i ], mo->mo_ad_memberof,
1302                                                         NULL, NULL,
1303                                                         &op->o_req_dn, &op->o_req_ndn );
1304                                 }
1305                                 break;
1306
1307                         default:
1308                                 assert( 0 );
1309                         }
1310                 }
1311         }
1312
1313         return SLAP_CB_CONTINUE;
1314 }
1315
1316 /*
1317  * response callback that adds/deletes member values when a group member
1318  * is modified.
1319  */
1320 static int
1321 memberof_res_rename( Operation *op, SlapReply *rs )
1322 {
1323         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
1324         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1325
1326         struct berval   newPDN, newDN = BER_BVNULL, newPNDN, newNDN;
1327         int             i, rc;
1328         BerVarray       vals;
1329
1330         struct berval   save_dn, save_ndn;
1331         memberof_is_t   iswhat = MEMBEROF_IS_GROUP;
1332
1333         if ( MEMBEROF_REFINT( mo ) ) {
1334                 iswhat |= MEMBEROF_IS_MEMBER;
1335         }
1336
1337         if ( op->orr_nnewSup ) {
1338                 newPNDN = *op->orr_nnewSup;
1339
1340         } else {
1341                 dnParent( &op->o_req_ndn, &newPNDN );
1342         }
1343
1344         build_new_dn( &newNDN, &newPNDN, &op->orr_nnewrdn, op->o_tmpmemctx );
1345
1346         save_dn = op->o_req_dn;
1347         save_ndn = op->o_req_ndn;
1348
1349         op->o_req_dn = newNDN;
1350         op->o_req_ndn = newNDN;
1351         rc = memberof_isGroupOrMember( op, &iswhat );
1352         op->o_req_dn = save_dn;
1353         op->o_req_ndn = save_ndn;
1354
1355         if ( rc != LDAP_SUCCESS || iswhat == MEMBEROF_IS_NONE ) {
1356                 goto done;
1357         }
1358
1359         if ( op->orr_newSup ) {
1360                 newPDN = *op->orr_newSup;
1361
1362         } else {
1363                 dnParent( &op->o_req_dn, &newPDN );
1364         }
1365
1366         build_new_dn( &newDN, &newPDN, &op->orr_newrdn, op->o_tmpmemctx );
1367
1368         if ( iswhat & MEMBEROF_IS_GROUP ) {
1369                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1370                 rc = backend_attribute( op, NULL, &newNDN,
1371                                 mo->mo_ad_member, &vals, ACL_READ );
1372                 op->o_bd->bd_info = (BackendInfo *)on;
1373
1374                 if ( rc == LDAP_SUCCESS ) {
1375                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1376                                 (void)memberof_value_modify( op, rs,
1377                                                 &vals[ i ], mo->mo_ad_memberof,
1378                                                 &op->o_req_dn, &op->o_req_ndn,
1379                                                 &newDN, &newNDN );
1380                         }
1381                         ber_bvarray_free_x( vals, op->o_tmpmemctx );
1382                 }
1383         }
1384
1385         if ( MEMBEROF_REFINT( mo ) && ( iswhat & MEMBEROF_IS_MEMBER ) ) {
1386                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1387                 rc = backend_attribute( op, NULL, &newNDN,
1388                                 mo->mo_ad_memberof, &vals, ACL_READ );
1389                 op->o_bd->bd_info = (BackendInfo *)on;
1390
1391                 if ( rc == LDAP_SUCCESS ) {
1392                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1393                                 (void)memberof_value_modify( op, rs,
1394                                                 &vals[ i ], mo->mo_ad_member,
1395                                                 &op->o_req_dn, &op->o_req_ndn,
1396                                                 &newDN, &newNDN );
1397                         }
1398                         ber_bvarray_free_x( vals, op->o_tmpmemctx );
1399                 }
1400         }
1401
1402 done:;
1403         if ( !BER_BVISNULL( &newDN ) ) {
1404                 op->o_tmpfree( newDN.bv_val, op->o_tmpmemctx );
1405         }
1406         op->o_tmpfree( newNDN.bv_val, op->o_tmpmemctx );
1407
1408         return SLAP_CB_CONTINUE;
1409 }
1410
1411 static int
1412 memberof_response( Operation *op, SlapReply *rs )
1413 {
1414         if ( rs->sr_err != LDAP_SUCCESS ) {
1415                 return SLAP_CB_CONTINUE;
1416         }
1417
1418         switch ( op->o_tag ) {
1419         case LDAP_REQ_ADD:
1420                 return memberof_res_add( op, rs );
1421
1422         case LDAP_REQ_DELETE:
1423                 return memberof_res_delete( op, rs );
1424
1425         case LDAP_REQ_MODIFY:
1426                 return memberof_res_modify( op, rs );
1427
1428         case LDAP_REQ_MODDN:
1429                 return memberof_res_rename( op, rs );
1430
1431         default:
1432                 return SLAP_CB_CONTINUE;
1433         }
1434 }
1435
1436 static int
1437 memberof_db_init(
1438         BackendDB       *be,
1439         ConfigReply     *cr )
1440 {
1441         slap_overinst   *on = (slap_overinst *)be->bd_info;
1442         memberof_t      *mo;
1443
1444         int             rc;
1445         const char      *text = NULL;
1446
1447         mo = (memberof_t *)ch_calloc( 1, sizeof( memberof_t ) );
1448
1449         rc = slap_str2ad( SLAPD_MEMBEROF_ATTR, &mo->mo_ad_memberof, &text );
1450         if ( rc != LDAP_SUCCESS ) {
1451                 Debug( LDAP_DEBUG_ANY,
1452                         "memberof_db_init: "
1453                         "unable to find attribute=\"%s\": %s (%d)\n",
1454                         SLAPD_MEMBEROF_ATTR, text, rc );
1455                 return rc;
1456         }
1457
1458         rc = slap_str2ad( SLAPD_GROUP_ATTR, &mo->mo_ad_member, &text );
1459         if ( rc != LDAP_SUCCESS ) {
1460                 Debug( LDAP_DEBUG_ANY,
1461                         "memberof_db_init: "
1462                         "unable to find attribute=\"%s\": %s (%d)\n",
1463                         SLAPD_GROUP_ATTR, text, rc );
1464                 return rc;
1465         }
1466
1467         mo->mo_oc_group = oc_find( SLAPD_GROUP_CLASS );
1468         if ( mo->mo_oc_group == NULL ) {
1469                 Debug( LDAP_DEBUG_ANY,
1470                         "memberof_db_init: "
1471                         "unable to find objectClass=\"%s\"\n",
1472                         SLAPD_GROUP_CLASS, 0, 0 );
1473                 return 1;
1474         }
1475
1476         on->on_bi.bi_private = (void *)mo;
1477
1478         return 0;
1479 }
1480
1481 enum {
1482         MO_DN = 1,
1483         MO_DANGLING,
1484         MO_REFINT,
1485 #if 0
1486         MO_REVERSE,
1487 #endif
1488         MO_GROUP_OC,
1489         MO_MEMBER_AD,
1490         MO_MEMBER_OF_AD
1491 };
1492
1493 static ConfigDriver mo_cf_gen;
1494
1495 #define OID             "1.3.6.1.4.1.7136.2.666.4"
1496 #define OIDAT           OID ".1.1"
1497 #define OIDCFGAT        OID ".1.2"
1498 #define OIDOC           OID ".2.1"
1499 #define OIDCFGOC        OID ".2.2"
1500
1501
1502 static ConfigTable mo_cfg[] = {
1503         { "memberof-dn", "modifiersName",
1504                 2, 2, 0, ARG_MAGIC|ARG_DN|MO_DN, mo_cf_gen,
1505                 "( OLcfgOvAt:18.0 NAME 'olcMemberOfDN' "
1506                         "DESC 'DN to be used as modifiersName' "
1507                         "SYNTAX OMsDN SINGLE-VALUE )",
1508                 NULL, NULL },
1509
1510         { "memberof-dangling", "ignore|drop|error",
1511                 2, 2, 0, ARG_MAGIC|MO_DANGLING, mo_cf_gen,
1512                 "( OLcfgOvAt:18.1 NAME 'olcMemberOfDangling' "
1513                         "DESC 'Behavior with respect to dangling members, "
1514                                 "constrained to ignore, drop, error' "
1515                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",
1516                 NULL, NULL },
1517
1518         { "memberof-refint", "true|FALSE",
1519                 2, 2, 0, ARG_MAGIC|ARG_ON_OFF|MO_REFINT, mo_cf_gen,
1520                 "( OLcfgOvAt:18.2 NAME 'olcMemberOfRefInt' "
1521                         "DESC 'Take care of referential integrity' "
1522                         "SYNTAX OMsBoolean SINGLE-VALUE )",
1523                 NULL, NULL },
1524
1525         { "memberof-group-oc", "objectClass",
1526                 2, 2, 0, ARG_MAGIC|MO_GROUP_OC, mo_cf_gen,
1527                 "( OLcfgOvAt:18.3 NAME 'olcMemberOfGroupOC' "
1528                         "DESC 'Group objectClass' "
1529                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",
1530                 NULL, NULL },
1531
1532         { "memberof-member-ad", "member attribute",
1533                 2, 2, 0, ARG_MAGIC|MO_MEMBER_AD, mo_cf_gen,
1534                 "( OLcfgOvAt:18.4 NAME 'olcMemberOfMemberAD' "
1535                         "DESC 'member attribute' "
1536                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",
1537                 NULL, NULL },
1538
1539         { "memberof-memberof-ad", "memberOf attribute",
1540                 2, 2, 0, ARG_MAGIC|MO_MEMBER_OF_AD, mo_cf_gen,
1541                 "( OLcfgOvAt:18.5 NAME 'olcMemberOfMemberOfAD' "
1542                         "DESC 'memberOf attribute' "
1543                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",
1544                 NULL, NULL },
1545
1546 #if 0
1547         { "memberof-reverse", "true|FALSE",
1548                 2, 2, 0, ARG_MAGIC|ARG_ON_OFF|MO_REVERSE, mo_cf_gen,
1549                 "( OLcfgOvAt:18.6 NAME 'olcMemberOfReverse' "
1550                         "DESC 'Take care of referential integrity "
1551                                 "also when directly modifying memberOf' "
1552                         "SYNTAX OMsBoolean SINGLE-VALUE )",
1553                 NULL, NULL },
1554 #endif
1555
1556         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
1557 };
1558
1559 static ConfigOCs mo_ocs[] = {
1560         { "( OLcfgOvOc:18.1 "
1561                 "NAME 'olcMemberOf' "
1562                 "DESC 'Member-of configuration' "
1563                 "SUP olcOverlayConfig "
1564                 "MAY ( "
1565                         "olcMemberOfDN "
1566                         "$ olcMemberOfDangling "
1567                         "$ olcMemberOfRefInt "
1568                         "$ olcMemberOfGroupOC "
1569                         "$ olcMemberOfMemberAD "
1570                         "$ olcMemberOfMemberOfAD "
1571 #if 0
1572                         "$ olcMemberOfReverse "
1573 #endif
1574                         ") "
1575                 ")",
1576                 Cft_Overlay, mo_cfg, NULL, NULL },
1577         { NULL, 0, NULL }
1578 };
1579
1580 static slap_verbmasks dangling_mode[] = {
1581         { BER_BVC( "ignore" ),          MEMBEROF_NONE },
1582         { BER_BVC( "drop" ),            MEMBEROF_FDANGLING_DROP },
1583         { BER_BVC( "error" ),           MEMBEROF_FDANGLING_ERROR },
1584         { BER_BVNULL,                   0 }
1585 };
1586
1587 static int
1588 memberof_make_group_filter( memberof_t *mo )
1589 {
1590         char            *ptr;
1591
1592         if ( !BER_BVISNULL( &mo->mo_groupFilterstr ) ) {
1593                 ch_free( mo->mo_groupFilterstr.bv_val );
1594         }
1595
1596         mo->mo_groupFilter.f_choice = LDAP_FILTER_EQUALITY;
1597         mo->mo_groupFilter.f_ava = &mo->mo_groupAVA;
1598
1599         mo->mo_groupFilter.f_av_desc = slap_schema.si_ad_objectClass;
1600         mo->mo_groupFilter.f_av_value = mo->mo_oc_group->soc_cname;
1601
1602         mo->mo_groupFilterstr.bv_len = STRLENOF( "(=)" )
1603                 + slap_schema.si_ad_objectClass->ad_cname.bv_len
1604                 + mo->mo_oc_group->soc_cname.bv_len;
1605         ptr = mo->mo_groupFilterstr.bv_val = ch_malloc( mo->mo_groupFilterstr.bv_len + 1 );
1606         *ptr++ = '(';
1607         ptr = lutil_strcopy( ptr, slap_schema.si_ad_objectClass->ad_cname.bv_val );
1608         *ptr++ = '=';
1609         ptr = lutil_strcopy( ptr, mo->mo_oc_group->soc_cname.bv_val );
1610         *ptr++ = ')';
1611         *ptr = '\0';
1612
1613         return 0;
1614 }
1615
1616 static int
1617 memberof_make_member_filter( memberof_t *mo )
1618 {
1619         char            *ptr;
1620
1621         if ( !BER_BVISNULL( &mo->mo_memberFilterstr ) ) {
1622                 ch_free( mo->mo_memberFilterstr.bv_val );
1623         }
1624
1625         mo->mo_memberFilter.f_choice = LDAP_FILTER_PRESENT;
1626         mo->mo_memberFilter.f_desc = mo->mo_ad_memberof;
1627
1628         mo->mo_memberFilterstr.bv_len = STRLENOF( "(=*)" )
1629                 + mo->mo_ad_memberof->ad_cname.bv_len;
1630         ptr = mo->mo_memberFilterstr.bv_val = ch_malloc( mo->mo_memberFilterstr.bv_len + 1 );
1631         *ptr++ = '(';
1632         ptr = lutil_strcopy( ptr, mo->mo_ad_memberof->ad_cname.bv_val );
1633         ptr = lutil_strcopy( ptr, "=*)" );
1634
1635         return 0;
1636 }
1637
1638 static int
1639 mo_cf_gen( ConfigArgs *c )
1640 {
1641         slap_overinst   *on = (slap_overinst *)c->bi;
1642         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1643
1644         int             i, rc = 0;
1645
1646         if ( c->op == SLAP_CONFIG_EMIT ) {
1647                 struct berval bv = BER_BVNULL;
1648
1649                 switch( c->type ) {
1650                 case MO_DN:
1651                         value_add_one( &c->rvalue_vals, &mo->mo_dn );
1652                         value_add_one( &c->rvalue_nvals, &mo->mo_ndn );
1653                         break;
1654
1655                 case MO_DANGLING:
1656                         enum_to_verb( dangling_mode, (mo->mo_flags & MEMBEROF_FDANGLING_MASK), &bv );
1657                         if ( BER_BVISNULL( &bv ) ) {
1658                                 /* there's something wrong... */
1659                                 assert( 0 );
1660                                 rc = 1;
1661
1662                         } else {
1663                                 value_add_one( &c->rvalue_vals, &bv );
1664                         }
1665                         break;
1666
1667                 case MO_REFINT:
1668                         c->value_int = MEMBEROF_REFINT( mo );
1669                         break;
1670
1671 #if 0
1672                 case MO_REVERSE:
1673                         c->value_int = MEMBEROF_REVERSE( mo );
1674                         break;
1675 #endif
1676
1677                 case MO_GROUP_OC:
1678                         assert( mo->mo_oc_group != NULL );
1679                         value_add_one( &c->rvalue_vals, &mo->mo_oc_group->soc_cname );
1680                         break;
1681
1682                 case MO_MEMBER_AD:
1683                         assert( mo->mo_ad_member != NULL );
1684                         value_add_one( &c->rvalue_vals, &mo->mo_ad_member->ad_cname );
1685                         break;
1686
1687                 case MO_MEMBER_OF_AD:
1688                         assert( mo->mo_ad_memberof != NULL );
1689                         value_add_one( &c->rvalue_vals, &mo->mo_ad_memberof->ad_cname );
1690                         break;
1691
1692                 default:
1693                         assert( 0 );
1694                         return 1;
1695                 }
1696
1697                 return rc;
1698
1699         } else if ( c->op == LDAP_MOD_DELETE ) {
1700                 return 1;       /* FIXME */
1701
1702         } else {
1703                 switch( c->type ) {
1704                 case MO_DN:
1705                         if ( !BER_BVISNULL( &mo->mo_dn ) ) {
1706                                 ber_memfree( mo->mo_dn.bv_val );
1707                                 ber_memfree( mo->mo_ndn.bv_val );
1708                         }
1709                         mo->mo_dn = c->value_dn;
1710                         mo->mo_ndn = c->value_ndn;
1711                         break;
1712
1713                 case MO_DANGLING:
1714                         i = verb_to_mask( c->argv[ 1 ], dangling_mode );
1715                         if ( BER_BVISNULL( &dangling_mode[ i ].word ) ) {
1716                                 return 1;
1717                         }
1718
1719                         mo->mo_flags &= ~MEMBEROF_FDANGLING_MASK;
1720                         mo->mo_flags |= dangling_mode[ i ].mask;
1721                         break;
1722
1723                 case MO_REFINT:
1724                         if ( c->value_int ) {
1725                                 mo->mo_flags |= MEMBEROF_FREFINT;
1726
1727                         } else {
1728                                 mo->mo_flags &= ~MEMBEROF_FREFINT;
1729                         }
1730                         break;
1731
1732 #if 0
1733                 case MO_REVERSE:
1734                         if ( c->value_int ) {
1735                                 mo->mo_flags |= MEMBEROF_FREVERSE;
1736
1737                         } else {
1738                                 mo->mo_flags &= ~MEMBEROF_FREVERSE;
1739                         }
1740                         break;
1741 #endif
1742
1743                 case MO_GROUP_OC: {
1744                         ObjectClass     *oc = NULL;
1745
1746                         oc = oc_find( c->argv[ 1 ] );
1747                         if ( oc == NULL ) {
1748                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1749                                         "unable to find group objectClass=\"%s\"",
1750                                         c->argv[ 1 ] );
1751                                 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n",
1752                                         c->log, c->cr_msg, 0 );
1753                                 return 1;
1754                         }
1755
1756                         mo->mo_oc_group = oc;
1757                         memberof_make_group_filter( mo );
1758                         } break;
1759
1760                 case MO_MEMBER_AD: {
1761                         AttributeDescription    *ad = NULL;
1762                         const char              *text = NULL;
1763
1764
1765                         rc = slap_str2ad( c->argv[ 1 ], &ad, &text );
1766                         if ( rc != LDAP_SUCCESS ) {
1767                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1768                                         "unable to find member attribute=\"%s\": %s (%d)",
1769                                         c->argv[ 1 ], text, rc );
1770                                 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n",
1771                                         c->log, c->cr_msg, 0 );
1772                                 return 1;
1773                         }
1774
1775                         if ( !is_at_syntax( ad->ad_type, SLAPD_DN_SYNTAX )              /* e.g. "member" */
1776                                 && !is_at_syntax( ad->ad_type, SLAPD_NAMEUID_SYNTAX ) ) /* e.g. "uniqueMember" */
1777                         {
1778                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1779                                         "member attribute=\"%s\" must either "
1780                                         "have DN (%s) or nameUID (%s) syntax",
1781                                         c->argv[ 1 ], SLAPD_DN_SYNTAX, SLAPD_NAMEUID_SYNTAX );
1782                                 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n",
1783                                         c->log, c->cr_msg, 0 );
1784                                 return 1;
1785                         }
1786
1787                         mo->mo_ad_member = ad;
1788                         } break;
1789
1790                 case MO_MEMBER_OF_AD: {
1791                         AttributeDescription    *ad = NULL;
1792                         const char              *text = NULL;
1793
1794
1795                         rc = slap_str2ad( c->argv[ 1 ], &ad, &text );
1796                         if ( rc != LDAP_SUCCESS ) {
1797                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1798                                         "unable to find memberof attribute=\"%s\": %s (%d)",
1799                                         c->argv[ 1 ], text, rc );
1800                                 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n",
1801                                         c->log, c->cr_msg, 0 );
1802                                 return 1;
1803                         }
1804
1805                         if ( !is_at_syntax( ad->ad_type, SLAPD_DN_SYNTAX )              /* e.g. "member" */
1806                                 && !is_at_syntax( ad->ad_type, SLAPD_NAMEUID_SYNTAX ) ) /* e.g. "uniqueMember" */
1807                         {
1808                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1809                                         "memberof attribute=\"%s\" must either "
1810                                         "have DN (%s) or nameUID (%s) syntax",
1811                                         c->argv[ 1 ], SLAPD_DN_SYNTAX, SLAPD_NAMEUID_SYNTAX );
1812                                 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n",
1813                                         c->log, c->cr_msg, 0 );
1814                                 return 1;
1815                         }
1816
1817                         mo->mo_ad_memberof = ad;
1818                         memberof_make_member_filter( mo );
1819                         } break;
1820
1821                 default:
1822                         assert( 0 );
1823                         return 1;
1824                 }
1825         }
1826
1827         return 0;
1828 }
1829
1830 static int
1831 memberof_db_open(
1832         BackendDB       *be,
1833         ConfigReply     *cr )
1834 {
1835         slap_overinst   *on = (slap_overinst *)be->bd_info;
1836         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1837
1838         if ( BER_BVISNULL( &mo->mo_dn ) ) {
1839                 ber_dupbv( &mo->mo_dn, &be->be_rootdn );
1840                 ber_dupbv( &mo->mo_ndn, &be->be_rootndn );
1841         }
1842
1843         if ( BER_BVISNULL( &mo->mo_groupFilterstr ) ) {
1844                 memberof_make_group_filter( mo );
1845         }
1846
1847         if ( BER_BVISNULL( &mo->mo_memberFilterstr ) ) {
1848                 memberof_make_member_filter( mo );
1849         }
1850
1851         return 0;
1852 }
1853
1854 static int
1855 memberof_db_destroy(
1856         BackendDB       *be,
1857         ConfigReply     *cr )
1858 {
1859         slap_overinst   *on = (slap_overinst *)be->bd_info;
1860         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1861
1862         if ( mo ) {
1863                 if ( !BER_BVISNULL( &mo->mo_dn ) ) {
1864                         ber_memfree( mo->mo_dn.bv_val );
1865                         ber_memfree( mo->mo_ndn.bv_val );
1866                 }
1867
1868                 if ( !BER_BVISNULL( &mo->mo_groupFilterstr ) ) {
1869                         ber_memfree( mo->mo_groupFilterstr.bv_val );
1870                 }
1871
1872                 if ( !BER_BVISNULL( &mo->mo_memberFilterstr ) ) {
1873                         ber_memfree( mo->mo_memberFilterstr.bv_val );
1874                 }
1875
1876                 ber_memfree( mo );
1877         }
1878
1879         return 0;
1880 }
1881
1882 /* unused */
1883 static AttributeDescription     *ad_memberOf;
1884
1885 static struct {
1886         char    *desc;
1887         AttributeDescription **adp;
1888 } as[] = {
1889         { "( 1.2.840.113556.1.2.102 "
1890                 "NAME 'memberOf' "
1891                 "DESC 'Group that the entry belongs to' "
1892                 "SYNTAX '1.3.6.1.4.1.1466.115.121.1.12' "
1893                 "EQUALITY distinguishedNameMatch "      /* added */
1894                 "USAGE dSAOperation "                   /* added; questioned */
1895                 /* "NO-USER-MODIFICATION " */           /* add? */
1896                 "X-ORIGIN 'iPlanet Delegated Administrator' )",
1897                 &ad_memberOf },
1898         { NULL }
1899 };
1900
1901 #if SLAPD_OVER_MEMBEROF == SLAPD_MOD_DYNAMIC
1902 static
1903 #endif /* SLAPD_OVER_MEMBEROF == SLAPD_MOD_DYNAMIC */
1904 int
1905 memberof_initialize( void )
1906 {
1907         int                     code, i;
1908
1909         for ( i = 0; as[ i ].desc != NULL; i++ ) {
1910                 code = register_at( as[ i ].desc, as[ i ].adp, 0 );
1911                 if ( code ) {
1912                         Debug( LDAP_DEBUG_ANY,
1913                                 "memberof_initialize: register_at #%d failed\n",
1914                                 i, 0, 0 );
1915                         return code;
1916                 }
1917         }
1918
1919         memberof.on_bi.bi_type = "memberof";
1920
1921         memberof.on_bi.bi_db_init = memberof_db_init;
1922         memberof.on_bi.bi_db_open = memberof_db_open;
1923         memberof.on_bi.bi_db_destroy = memberof_db_destroy;
1924
1925         memberof.on_bi.bi_op_add = memberof_op_add;
1926         memberof.on_bi.bi_op_delete = memberof_op_delete;
1927         memberof.on_bi.bi_op_modify = memberof_op_modify;
1928
1929         memberof.on_response = memberof_response;
1930
1931         memberof.on_bi.bi_cf_ocs = mo_ocs;
1932
1933         code = config_register_schema( mo_cfg, mo_ocs );
1934         if ( code ) return code;
1935
1936         return overlay_register( &memberof );
1937 }
1938
1939 #if SLAPD_OVER_MEMBEROF == SLAPD_MOD_DYNAMIC
1940 int
1941 init_module( int argc, char *argv[] )
1942 {
1943         return memberof_initialize();
1944 }
1945 #endif /* SLAPD_OVER_MEMBEROF == SLAPD_MOD_DYNAMIC */
1946
1947 #endif /* SLAPD_OVER_MEMBEROF */