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 != NULL );
 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 != NULL );
 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 != NULL );
 272                 assert( rs->sr_entry->e_attrs != NULL );
 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_numvals = 1;
 420         ml->sml_values = &values[ 0 ];
 421         ml->sml_values[ 0 ] = mo->mo_dn;
 422         BER_BVZERO( &ml->sml_values[ 1 ] );
 423         ml->sml_nvalues = &nvalues[ 0 ];
 424         ml->sml_nvalues[ 0 ] = mo->mo_ndn;
 425         BER_BVZERO( &ml->sml_nvalues[ 1 ] );
 426         ml->sml_desc = slap_schema.si_ad_modifiersName;
 427         ml->sml_type = ml->sml_desc->ad_cname;
 428         ml->sml_op = LDAP_MOD_REPLACE;
 429         ml->sml_flags = SLAP_MOD_INTERNAL;
 430         ml->sml_next = NULL;
 431         op2.orm_modlist = ml;
 432
 433         ml = &mod[ 1 ];
 434         ml->sml_numvals = 1;
 435         ml->sml_values = &values[ 2 ];
 436         BER_BVZERO( &ml->sml_values[ 1 ] );
 437         ml->sml_nvalues = &nvalues[ 2 ];
 438         BER_BVZERO( &ml->sml_nvalues[ 1 ] );
 439         ml->sml_desc = ad;
 440         ml->sml_type = ml->sml_desc->ad_cname;
 441         ml->sml_flags = SLAP_MOD_INTERNAL;
 442         ml->sml_next = NULL;
 443         op2.orm_modlist->sml_next = ml;
 444
 445         if ( new_ndn != NULL ) {
 446                 assert( !BER_BVISNULL( new_dn ) );
 447                 assert( !BER_BVISNULL( new_ndn ) );
 448
 449                 ml = &mod[ 1 ];
 450                 ml->sml_op = LDAP_MOD_ADD;
 451
 452                 ml->sml_values[ 0 ] = *new_dn;
 453                 ml->sml_nvalues[ 0 ] = *new_ndn;
 454
 455                 (void)op->o_bd->be_modify( &op2, &rs2 );
 456
 457                 assert( op2.orm_modlist == &mod[ 0 ] );
 458                 assert( op2.orm_modlist->sml_next == &mod[ 1 ] );
 459                 ml = op2.orm_modlist->sml_next->sml_next;
 460                 if ( ml != NULL ) {
 461                         slap_mods_free( ml, 1 );
 462                 }
 463         }
 464
 465         if ( old_ndn != NULL ) {
 466                 assert( !BER_BVISNULL( old_dn ) );
 467                 assert( !BER_BVISNULL( old_ndn ) );
 468
 469                 ml = &mod[ 1 ];
 470                 ml->sml_op = LDAP_MOD_DELETE;
 471
 472                 ml->sml_values[ 0 ] = *old_dn;
 473                 ml->sml_nvalues[ 0 ] = *old_ndn;
 474
 475                 (void)op->o_bd->be_modify( &op2, &rs2 );
 476
 477                 assert( op2.orm_modlist == &mod[ 0 ] );
 478                 assert( op2.orm_modlist->sml_next == &mod[ 1 ] );
 479                 ml = op2.orm_modlist->sml_next->sml_next;
 480                 if ( ml != NULL ) {
 481                         slap_mods_free( ml, 1 );
 482                 }
 483         }
 484
 485         /* FIXME: if old_group_ndn doesn't exist, both delete __and__
 486          * add will fail; better split in two operations, although
 487          * not optimal in terms of performance.  At least it would
 488          * move towards self-repairing capabilities. */
 489
 490         op2.o_bd->bd_info = (BackendInfo *)on;
 491
 492         return rs2.sr_err;
 493 }
 494
 495 static int
 496 memberof_op_add( Operation *op, SlapReply *rs )
 497 {
 498         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 499         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
 500
 501         Attribute       **ap, **map = NULL;
 502         int             rc = SLAP_CB_CONTINUE;
 503         int             i;
 504         struct berval   save_dn, save_ndn;
 505
 506         if ( op->ora_e->e_attrs == NULL ) {
 507                 /* FIXME: global overlay; need to deal with */
 508                 Debug( LDAP_DEBUG_ANY, "%s: memberof_op_add(\"%s\"): "
 509                         "consistency checks not implemented when overlay "
 510                         "is instantiated as global.\n",
 511                         op->o_log_prefix, op->o_req_dn.bv_val, 0 );
 512                 return SLAP_CB_CONTINUE;
 513         }
 514
 515         if ( MEMBEROF_REVERSE( mo ) ) {
 516                 for ( ap = &op->ora_e->e_attrs; *ap; ap = &(*ap)->a_next ) {
 517                         Attribute       *a = *ap;
 518
 519                         if ( a->a_desc == mo->mo_ad_memberof ) {
 520                                 map = ap;
 521                                 break;
 522                         }
 523                 }
 524         }
 525
 526         save_dn = op->o_dn;
 527         save_ndn = op->o_ndn;
 528
 529         if ( MEMBEROF_DANGLING_CHECK( mo )
 530                         && !get_relax( op )
 531                         && is_entry_objectclass( op->ora_e, mo->mo_oc_group, 0 ) )
 532         {
 533                 op->o_dn = op->o_bd->be_rootdn;
 534                 op->o_dn = op->o_bd->be_rootndn;
 535                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 536
 537                 for ( ap = &op->ora_e->e_attrs; *ap; ) {
 538                         Attribute       *a = *ap;
 539
 540                         if ( !is_ad_subtype( a->a_desc, mo->mo_ad_member ) ) {
 541                                 ap = &a->a_next;
 542                                 continue;
 543                         }
 544
 545                         assert( a->a_nvals != NULL );
 546
 547                         for ( i = 0; !BER_BVISNULL( &a->a_nvals[ i ] ); i++ ) {
 548                                 Entry           *e;
 549
 550                                 /* FIXME: entry_get_rw does not pass
 551                                  * thru overlays yet; when it does, we
 552                                  * might need to make a copy of the DN */
 553
 554                                 rc = be_entry_get_rw( op, &a->a_nvals[ i ],
 555                                                 NULL, NULL, 0, &e );
 556                                 if ( rc == LDAP_SUCCESS ) {
 557                                         be_entry_release_r( op, e );
 558                                         continue;
 559                                 }
 560
 561                                 if ( MEMBEROF_DANGLING_ERROR( mo ) ) {
 562                                         rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 563                                         rs->sr_text = "adding non-existing object "
 564                                                 "as group member";
 565                                         send_ldap_result( op, rs );
 566                                         goto done;
 567                                 }
 568
 569                                 if ( MEMBEROF_DANGLING_DROP( mo ) ) {
 570                                         int     j;
 571
 572                                         Debug( LDAP_DEBUG_ANY, "%s: memberof_op_add(\"%s\"): "
 573                                                 "member=\"%s\" does not exist (stripping...)\n",
 574                                                 op->o_log_prefix, op->ora_e->e_name.bv_val,
 575                                                 a->a_vals[ i ].bv_val );
 576
 577                                         for ( j = i + 1; !BER_BVISNULL( &a->a_nvals[ j ] ); j++ );
 578                                         ber_memfree( a->a_vals[ i ].bv_val );
 579                                         BER_BVZERO( &a->a_vals[ i ] );
 580                                         if ( a->a_nvals != a->a_vals ) {
 581                                                 ber_memfree( a->a_nvals[ i ].bv_val );
 582                                                 BER_BVZERO( &a->a_nvals[ i ] );
 583                                         }
 584                                         if ( j - i == 1 ) {
 585                                                 break;
 586                                         }
 587
 588                                         AC_MEMCPY( &a->a_vals[ i ], &a->a_vals[ i + 1 ],
 589                                                 sizeof( struct berval ) * ( j - i ) );
 590                                         if ( a->a_nvals != a->a_vals ) {
 591                                                 AC_MEMCPY( &a->a_nvals[ i ], &a->a_nvals[ i + 1 ],
 592                                                         sizeof( struct berval ) * ( j - i ) );
 593                                         }
 594                                         i--;
 595                                 }
 596                         }
 597
 598                         /* If all values have been removed,
 599                          * remove the attribute itself. */
 600                         if ( BER_BVISNULL( &a->a_nvals[ 0 ] ) ) {
 601                                 *ap = a->a_next;
 602                                 attr_free( a );
 603
 604                         } else {
 605                                 ap = &a->a_next;
 606                         }
 607                 }
 608                 op->o_dn = save_dn;
 609                 op->o_ndn = save_ndn;
 610                 op->o_bd->bd_info = (BackendInfo *)on;
 611         }
 612
 613         if ( map != NULL ) {
 614                 Attribute               *a = *map;
 615                 AccessControlState      acl_state = ACL_STATE_INIT;
 616
 617                 for ( i = 0; !BER_BVISNULL( &a->a_nvals[ i ] ); i++ ) {
 618                         Entry           *e;
 619
 620                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 621                         /* access is checked with the original identity */
 622                         rc = access_allowed( op, op->ora_e, mo->mo_ad_memberof,
 623                                         &a->a_nvals[ i ], ACL_WADD,
 624                                         &acl_state );
 625                         if ( rc == 0 ) {
 626                                 rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 627                                 rs->sr_text = NULL;
 628                                 send_ldap_result( op, rs );
 629                                 goto done;
 630                         }
 631                         rc = be_entry_get_rw( op, &a->a_nvals[ i ],
 632                                         NULL, NULL, 0, &e );
 633                         op->o_bd->bd_info = (BackendInfo *)on;
 634                         if ( rc != LDAP_SUCCESS ) {
 635                                 if ( get_relax( op ) ) {
 636                                         continue;
 637                                 }
 638
 639                                 if ( MEMBEROF_DANGLING_ERROR( mo ) ) {
 640                                         rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 641                                         rs->sr_text = "adding non-existing object "
 642                                                 "as memberof";
 643                                         send_ldap_result( op, rs );
 644                                         goto done;
 645                                 }
 646
 647                                 if ( MEMBEROF_DANGLING_DROP( mo ) ) {
 648                                         int     j;
 649
 650                                         Debug( LDAP_DEBUG_ANY, "%s: memberof_op_add(\"%s\"): "
 651                                                 "memberof=\"%s\" does not exist (stripping...)\n",
 652                                                 op->o_log_prefix, op->ora_e->e_name.bv_val,
 653                                                 a->a_nvals[ i ].bv_val );
 654
 655                                         for ( j = i + 1; !BER_BVISNULL( &a->a_nvals[ j ] ); j++ );
 656                                         ber_memfree( a->a_vals[ i ].bv_val );
 657                                         BER_BVZERO( &a->a_vals[ i ] );
 658                                         if ( a->a_nvals != a->a_vals ) {
 659                                                 ber_memfree( a->a_nvals[ i ].bv_val );
 660                                                 BER_BVZERO( &a->a_nvals[ i ] );
 661                                         }
 662                                         if ( j - i == 1 ) {
 663                                                 break;
 664                                         }
 665
 666                                         AC_MEMCPY( &a->a_vals[ i ], &a->a_vals[ i + 1 ],
 667                                                 sizeof( struct berval ) * ( j - i ) );
 668                                         if ( a->a_nvals != a->a_vals ) {
 669                                                 AC_MEMCPY( &a->a_nvals[ i ], &a->a_nvals[ i + 1 ],
 670                                                         sizeof( struct berval ) * ( j - i ) );
 671                                         }
 672                                         i--;
 673                                 }
 674
 675                                 continue;
 676                         }
 677
 678                         /* access is checked with the original identity */
 679                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 680                         rc = access_allowed( op, e, mo->mo_ad_member,
 681                                         &op->o_req_ndn, ACL_WADD, NULL );
 682                         be_entry_release_r( op, e );
 683                         op->o_bd->bd_info = (BackendInfo *)on;
 684
 685                         if ( !rc ) {
 686                                 rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 687                                 rs->sr_text = "insufficient access to object referenced by memberof";
 688                                 send_ldap_result( op, rs );
 689                                 goto done;
 690                         }
 691                 }
 692
 693                 if ( BER_BVISNULL( &a->a_nvals[ 0 ] ) ) {
 694                         *map = a->a_next;
 695                         attr_free( a );
 696                 }
 697         }
 698
 699         rc = SLAP_CB_CONTINUE;
 700
 701 done:;
 702         op->o_dn = save_dn;
 703         op->o_ndn = save_ndn;
 704         op->o_bd->bd_info = (BackendInfo *)on;
 705
 706         return rc;
 707 }
 708
 709 static int
 710 memberof_op_delete( Operation *op, SlapReply *rs )
 711 {
 712         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 713         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
 714
 715         memberof_is_t   iswhat = MEMBEROF_IS_GROUP;
 716
 717         if ( MEMBEROF_REFINT( mo ) ) {
 718                 iswhat = MEMBEROF_IS_BOTH;
 719         }
 720
 721         memberof_isGroupOrMember( op, &iswhat );
 722
 723         return SLAP_CB_CONTINUE;
 724 }
 725
 726 static int
 727 memberof_op_modify( Operation *op, SlapReply *rs )
 728 {
 729         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 730         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
 731
 732         Modifications   **mlp, **mmlp = NULL;
 733         int             rc = SLAP_CB_CONTINUE;
 734         struct berval   save_dn, save_ndn;
 735         memberof_is_t   iswhat = MEMBEROF_IS_GROUP;
 736
 737         if ( MEMBEROF_REVERSE( mo ) ) {
 738                 for ( mlp = &op->orm_modlist; *mlp; mlp = &(*mlp)->sml_next ) {
 739                         Modifications   *ml = *mlp;
 740
 741                         if ( ml->sml_desc == mo->mo_ad_memberof ) {
 742                                 mmlp = mlp;
 743                                 break;
 744                         }
 745                 }
 746         }
 747
 748         save_dn = op->o_dn;
 749         save_ndn = op->o_ndn;
 750
 751         if ( MEMBEROF_DANGLING_CHECK( mo )
 752                         && !get_relax( op )
 753                         && memberof_isGroupOrMember( op, &iswhat ) == LDAP_SUCCESS
 754                         && ( iswhat & MEMBEROF_IS_GROUP ) )
 755         {
 756                 op->o_dn = op->o_bd->be_rootdn;
 757                 op->o_dn = op->o_bd->be_rootndn;
 758                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 759
 760                 assert( op->orm_modlist != NULL );
 761
 762                 for ( mlp = &op->orm_modlist; *mlp; ) {
 763                         Modifications   *ml = *mlp;
 764                         int             i;
 765
 766                         if ( !is_ad_subtype( ml->sml_desc, mo->mo_ad_member ) ) {
 767                                 mlp = &ml->sml_next;
 768                                 continue;
 769                         }
 770
 771                         switch ( ml->sml_op ) {
 772                         case LDAP_MOD_DELETE:
 773                                 /* we don't care about cancellations: if the value
 774                                  * exists, fine; if it doesn't, we let the underlying
 775                                  * database fail as appropriate; */
 776                                 mlp = &ml->sml_next;
 777                                 break;
 778
 779                         case LDAP_MOD_REPLACE:
 780                         case LDAP_MOD_ADD:
 781                                 /* NOTE: right now, the attributeType we use
 782                                  * for member must have a normalized value */
 783                                 assert( ml->sml_nvalues != NULL );
 784
 785                                 for ( i = 0; !BER_BVISNULL( &ml->sml_nvalues[ i ] ); i++ ) {
 786                                         int             rc;
 787                                         Entry           *e;
 788
 789                                         if ( be_entry_get_rw( op, &ml->sml_nvalues[ i ],
 790                                                         NULL, NULL, 0, &e ) == LDAP_SUCCESS )
 791                                         {
 792                                                 be_entry_release_r( op, e );
 793                                                 continue;
 794                                         }
 795
 796                                         if ( MEMBEROF_DANGLING_ERROR( mo ) ) {
 797                                                 rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 798                                                 rs->sr_text = "adding non-existing object "
 799                                                         "as group member";
 800                                                 send_ldap_result( op, rs );
 801                                                 goto done;
 802                                         }
 803
 804                                         if ( MEMBEROF_DANGLING_DROP( mo ) ) {
 805                                                 int     j;
 806
 807                                                 Debug( LDAP_DEBUG_ANY, "%s: memberof_op_modify(\"%s\"): "
 808                                                         "member=\"%s\" does not exist (stripping...)\n",
 809                                                         op->o_log_prefix, op->o_req_dn.bv_val,
 810                                                         ml->sml_nvalues[ i ].bv_val );
 811
 812                                                 for ( j = i + 1; !BER_BVISNULL( &ml->sml_nvalues[ j ] ); j++ );
 813                                                 ber_memfree( ml->sml_values[ i ].bv_val );
 814                                                 BER_BVZERO( &ml->sml_values[ i ] );
 815                                                 ber_memfree( ml->sml_nvalues[ i ].bv_val );
 816                                                 BER_BVZERO( &ml->sml_nvalues[ i ] );
 817                                                 ml->sml_numvals--;
 818                                                 if ( j - i == 1 ) {
 819                                                         break;
 820                                                 }
 821
 822                                                 AC_MEMCPY( &ml->sml_values[ i ], &ml->sml_values[ i + 1 ],
 823                                                         sizeof( struct berval ) * ( j - i ) );
 824                                                 AC_MEMCPY( &ml->sml_nvalues[ i ], &ml->sml_nvalues[ i + 1 ],
 825                                                         sizeof( struct berval ) * ( j - i ) );
 826                                                 i--;
 827                                         }
 828                                 }
 829
 830                                 if ( BER_BVISNULL( &ml->sml_nvalues[ 0 ] ) ) {
 831                                         *mlp = ml->sml_next;
 832                                         slap_mod_free( &ml->sml_mod, 0 );
 833                                         free( ml );
 834
 835                                 } else {
 836                                         mlp = &ml->sml_next;
 837                                 }
 838
 839                                 break;
 840
 841                         default:
 842                                 assert( 0 );
 843                         }
 844                 }
 845         }
 846
 847         if ( mmlp != NULL ) {
 848                 Modifications   *ml = *mmlp;
 849                 int             i;
 850                 Entry           *target;
 851
 852                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 853                 rc = be_entry_get_rw( op, &op->o_req_ndn,
 854                                 NULL, NULL, 0, &target );
 855                 op->o_bd->bd_info = (BackendInfo *)on;
 856                 if ( rc != LDAP_SUCCESS ) {
 857                         rc = rs->sr_err = LDAP_NO_SUCH_OBJECT;
 858                         send_ldap_result( op, rs );
 859                         goto done;
 860                 }
 861
 862                 switch ( ml->sml_op ) {
 863                 case LDAP_MOD_DELETE:
 864                         if ( ml->sml_nvalues != NULL ) {
 865                                 AccessControlState      acl_state = ACL_STATE_INIT;
 866
 867                                 for ( i = 0; !BER_BVISNULL( &ml->sml_nvalues[ i ] ); i++ ) {
 868                                         Entry           *e;
 869
 870                                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 871                                         /* access is checked with the original identity */
 872                                         rc = access_allowed( op, target,
 873                                                         mo->mo_ad_memberof,
 874                                                         &ml->sml_nvalues[ i ],
 875                                                         ACL_WDEL,
 876                                                         &acl_state );
 877                                         if ( rc == 0 ) {
 878                                                 rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 879                                                 rs->sr_text = NULL;
 880                                                 send_ldap_result( op, rs );
 881                                                 goto done2;
 882                                         }
 883
 884                                         rc = be_entry_get_rw( op, &ml->sml_nvalues[ i ],
 885                                                         NULL, NULL, 0, &e );
 886                                         op->o_bd->bd_info = (BackendInfo *)on;
 887                                         if ( rc != LDAP_SUCCESS ) {
 888                                                 if ( get_relax( op ) ) {
 889                                                         continue;
 890                                                 }
 891
 892                                                 if ( MEMBEROF_DANGLING_ERROR( mo ) ) {
 893                                                         rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
 894                                                         rs->sr_text = "deleting non-existing object "
 895                                                                 "as memberof";
 896                                                         send_ldap_result( op, rs );
 897                                                         goto done2;
 898                                                 }
 899
 900                                                 if ( MEMBEROF_DANGLING_DROP( mo ) ) {
 901                                                         int     j;
 902
 903                                                         Debug( LDAP_DEBUG_ANY, "%s: memberof_op_modify(\"%s\"): "
 904                                                                 "memberof=\"%s\" does not exist (stripping...)\n",
 905                                                                 op->o_log_prefix, op->o_req_ndn.bv_val,
 906                                                                 ml->sml_nvalues[ i ].bv_val );
 907
 908                                                         for ( j = i + 1; !BER_BVISNULL( &ml->sml_nvalues[ j ] ); j++ );
 909                                                         ber_memfree( ml->sml_values[ i ].bv_val );
 910                                                         BER_BVZERO( &ml->sml_values[ i ] );
 911                                                         if ( ml->sml_nvalues != ml->sml_values ) {
 912                                                                 ber_memfree( ml->sml_nvalues[ i ].bv_val );
 913                                                                 BER_BVZERO( &ml->sml_nvalues[ i ] );
 914                                                         }
 915                                                         ml->sml_numvals--;
 916                                                         if ( j - i == 1 ) {
 917                                                                 break;
 918                                                         }
 919
 920                                                         AC_MEMCPY( &ml->sml_values[ i ], &ml->sml_values[ i + 1 ],
 921                                                                 sizeof( struct berval ) * ( j - i ) );
 922                                                         if ( ml->sml_nvalues != ml->sml_values ) {
 923                                                                 AC_MEMCPY( &ml->sml_nvalues[ i ], &ml->sml_nvalues[ i + 1 ],
 924                                                                         sizeof( struct berval ) * ( j - i ) );
 925                                                         }
 926                                                         i--;
 927                                                 }
 928
 929                                                 continue;
 930                                         }
 931
 932                                         /* access is checked with the original identity */
 933                                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 934                                         rc = access_allowed( op, e, mo->mo_ad_member,
 935                                                         &op->o_req_ndn,
 936                                                         ACL_WDEL, NULL );
 937                                         be_entry_release_r( op, e );
 938                                         op->o_bd->bd_info = (BackendInfo *)on;
 939
 940                                         if ( !rc ) {
 941                                                 rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 942                                                 rs->sr_text = "insufficient access to object referenced by memberof";
 943                                                 send_ldap_result( op, rs );
 944                                                 goto done;
 945                                         }
 946                                 }
 947
 948                                 if ( BER_BVISNULL( &ml->sml_nvalues[ 0 ] ) ) {
 949                                         *mmlp = ml->sml_next;
 950                                         slap_mod_free( &ml->sml_mod, 0 );
 951                                         free( ml );
 952                                 }
 953
 954                                 break;
 955                         }
 956                         /* fall thru */
 957
 958                 case LDAP_MOD_REPLACE:
 959
 960                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 961                         /* access is checked with the original identity */
 962                         rc = access_allowed( op, target,
 963                                         mo->mo_ad_memberof,
 964                                         NULL,
 965                                         ACL_WDEL, NULL );
 966                         op->o_bd->bd_info = (BackendInfo *)on;
 967                         if ( rc == 0 ) {
 968                                 rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 969                                 rs->sr_text = NULL;
 970                                 send_ldap_result( op, rs );
 971                                 goto done2;
 972                         }
 973
 974                         if ( ml->sml_op == LDAP_MOD_DELETE ) {
 975                                 break;
 976                         }
 977                         /* fall thru */
 978
 979                 case LDAP_MOD_ADD: {
 980                         AccessControlState      acl_state = ACL_STATE_INIT;
 981
 982                         for ( i = 0; !BER_BVISNULL( &ml->sml_nvalues[ i ] ); i++ ) {
 983                                 Entry           *e;
 984
 985                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 986                                 /* access is checked with the original identity */
 987                                 rc = access_allowed( op, target,
 988                                                 mo->mo_ad_memberof,
 989                                                 &ml->sml_nvalues[ i ],
 990                                                 ACL_WADD,
 991                                                 &acl_state );
 992                                 if ( rc == 0 ) {
 993                                         rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 994                                         rs->sr_text = NULL;
 995                                         send_ldap_result( op, rs );
 996                                         goto done2;
 997                                 }
 998
 999                                 rc = be_entry_get_rw( op, &ml->sml_nvalues[ i ],
1000                                                 NULL, NULL, 0, &e );
1001                                 op->o_bd->bd_info = (BackendInfo *)on;
1002                                 if ( rc != LDAP_SUCCESS ) {
1003                                         if ( MEMBEROF_DANGLING_ERROR( mo ) ) {
1004                                                 rc = rs->sr_err = LDAP_CONSTRAINT_VIOLATION;
1005                                                 rs->sr_text = "adding non-existing object "
1006                                                         "as memberof";
1007                                                 send_ldap_result( op, rs );
1008                                                 goto done2;
1009                                         }
1010
1011                                         if ( MEMBEROF_DANGLING_DROP( mo ) ) {
1012                                                 int     j;
1013
1014                                                 Debug( LDAP_DEBUG_ANY, "%s: memberof_op_modify(\"%s\"): "
1015                                                         "memberof=\"%s\" does not exist (stripping...)\n",
1016                                                         op->o_log_prefix, op->o_req_ndn.bv_val,
1017                                                         ml->sml_nvalues[ i ].bv_val );
1018
1019                                                 for ( j = i + 1; !BER_BVISNULL( &ml->sml_nvalues[ j ] ); j++ );
1020                                                 ber_memfree( ml->sml_values[ i ].bv_val );
1021                                                 BER_BVZERO( &ml->sml_values[ i ] );
1022                                                 if ( ml->sml_nvalues != ml->sml_values ) {
1023                                                         ber_memfree( ml->sml_nvalues[ i ].bv_val );
1024                                                         BER_BVZERO( &ml->sml_nvalues[ i ] );
1025                                                 }
1026                                                 ml->sml_numvals--;
1027                                                 if ( j - i == 1 ) {
1028                                                         break;
1029                                                 }
1030
1031                                                 AC_MEMCPY( &ml->sml_values[ i ], &ml->sml_values[ i + 1 ],
1032                                                         sizeof( struct berval ) * ( j - i ) );
1033                                                 if ( ml->sml_nvalues != ml->sml_values ) {
1034                                                         AC_MEMCPY( &ml->sml_nvalues[ i ], &ml->sml_nvalues[ i + 1 ],
1035                                                                 sizeof( struct berval ) * ( j - i ) );
1036                                                 }
1037                                                 i--;
1038                                         }
1039
1040                                         continue;
1041                                 }
1042
1043                                 /* access is checked with the original identity */
1044                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1045                                 rc = access_allowed( op, e, mo->mo_ad_member,
1046                                                 &op->o_req_ndn,
1047                                                 ACL_WDEL, NULL );
1048                                 be_entry_release_r( op, e );
1049                                 op->o_bd->bd_info = (BackendInfo *)on;
1050
1051                                 if ( !rc ) {
1052                                         rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1053                                         rs->sr_text = "insufficient access to object referenced by memberof";
1054                                         send_ldap_result( op, rs );
1055                                         goto done;
1056                                 }
1057                         }
1058
1059                         if ( BER_BVISNULL( &ml->sml_nvalues[ 0 ] ) ) {
1060                                 *mmlp = ml->sml_next;
1061                                 slap_mod_free( &ml->sml_mod, 0 );
1062                                 free( ml );
1063                         }
1064
1065                         } break;
1066
1067                 default:
1068                         assert( 0 );
1069                 }
1070
1071 done2:;
1072                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1073                 be_entry_release_r( op, target );
1074                 op->o_bd->bd_info = (BackendInfo *)on;
1075         }
1076
1077         rc = SLAP_CB_CONTINUE;
1078
1079 done:;
1080         op->o_dn = save_dn;
1081         op->o_ndn = save_ndn;
1082         op->o_bd->bd_info = (BackendInfo *)on;
1083
1084         return rc;
1085 }
1086
1087 /*
1088  * response callback that adds memberof values when a group is added.
1089  */
1090 static int
1091 memberof_res_add( Operation *op, SlapReply *rs )
1092 {
1093         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
1094         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1095
1096         int             i;
1097
1098         if ( MEMBEROF_REVERSE( mo ) ) {
1099                 Attribute       *ma;
1100
1101                 ma = attr_find( op->ora_e->e_attrs, mo->mo_ad_memberof );
1102                 if ( ma != NULL ) {
1103                         Operation       op2 = *op;
1104                         SlapReply       rs2 = { 0 };
1105
1106                         /* relax is required to allow to add
1107                          * a non-existing member */
1108                         op2.o_relax = SLAP_CONTROL_CRITICAL;
1109
1110                         for ( i = 0; !BER_BVISNULL( &ma->a_nvals[ i ] ); i++ ) {
1111
1112                                 /* the modification is attempted
1113                                  * with the original identity */
1114                                 (void)memberof_value_modify( &op2, &rs2,
1115                                         &ma->a_nvals[ i ], mo->mo_ad_member,
1116                                         NULL, NULL, &op->o_req_dn, &op->o_req_ndn );
1117                         }
1118                 }
1119         }
1120
1121         if ( is_entry_objectclass( op->ora_e, mo->mo_oc_group, 0 ) ) {
1122                 Attribute       *a;
1123
1124                 for ( a = attrs_find( op->ora_e->e_attrs, mo->mo_ad_member );
1125                                 a != NULL;
1126                                 a = attrs_find( a->a_next, mo->mo_ad_member ) )
1127                 {
1128                         for ( i = 0; !BER_BVISNULL( &a->a_nvals[ i ] ); i++ ) {
1129                                 (void)memberof_value_modify( op, rs,
1130                                                 &a->a_nvals[ i ],
1131                                                 mo->mo_ad_memberof,
1132                                                 NULL, NULL,
1133                                                 &op->o_req_dn,
1134                                                 &op->o_req_ndn );
1135                         }
1136                 }
1137         }
1138
1139         return SLAP_CB_CONTINUE;
1140 }
1141
1142 /*
1143  * response callback that deletes memberof values when a group is deleted.
1144  */
1145 static int
1146 memberof_res_delete( Operation *op, SlapReply *rs )
1147 {
1148         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
1149         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1150
1151         BerVarray       vals;
1152         int             i;
1153
1154         vals = memberof_saved_member_get( op, &saved_member_vals );
1155         if ( vals != NULL ) {
1156                 for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1157                         (void)memberof_value_modify( op, rs,
1158                                         &vals[ i ], mo->mo_ad_memberof,
1159                                         &op->o_req_dn, &op->o_req_ndn,
1160                                         NULL, NULL );
1161                 }
1162
1163                 ber_bvarray_free( vals );
1164         }
1165
1166         if ( MEMBEROF_REFINT( mo ) ) {
1167                 vals = memberof_saved_member_get( op, &saved_memberof_vals );
1168                 if ( vals != NULL ) {
1169                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1170                                 (void)memberof_value_modify( op, rs,
1171                                                 &vals[ i ], mo->mo_ad_member,
1172                                                 &op->o_req_dn, &op->o_req_ndn,
1173                                                 NULL, NULL );
1174                         }
1175
1176                         ber_bvarray_free( vals );
1177                 }
1178         }
1179
1180         return SLAP_CB_CONTINUE;
1181 }
1182
1183 /*
1184  * response callback that adds/deletes memberof values when a group
1185  * is modified.
1186  */
1187 static int
1188 memberof_res_modify( Operation *op, SlapReply *rs )
1189 {
1190         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
1191         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1192
1193         int             i, rc;
1194         Modifications   *ml, *mml = NULL;
1195         BerVarray       vals;
1196         memberof_is_t   iswhat = MEMBEROF_IS_GROUP;
1197
1198         if ( MEMBEROF_REVERSE( mo ) ) {
1199                 for ( ml = op->orm_modlist; ml; ml = ml->sml_next ) {
1200                         if ( ml->sml_desc == mo->mo_ad_memberof ) {
1201                                 mml = ml;
1202                                 break;
1203                         }
1204                 }
1205         }
1206
1207         if ( mml != NULL ) {
1208                 BerVarray       vals = mml->sml_nvalues;
1209
1210                 switch ( mml->sml_op ) {
1211                 case LDAP_MOD_DELETE:
1212                         if ( vals != NULL ) {
1213                                 for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1214                                         memberof_value_modify( op, rs,
1215                                                         &vals[ i ], mo->mo_ad_member,
1216                                                         &op->o_req_dn, &op->o_req_ndn,
1217                                                         NULL, NULL );
1218                                 }
1219                                 break;
1220                         }
1221                         /* fall thru */
1222
1223                 case LDAP_MOD_REPLACE:
1224                         /* delete all ... */
1225                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
1226                         rc = backend_attribute( op, NULL, &op->o_req_ndn,
1227                                         mo->mo_ad_memberof, &vals, ACL_READ );
1228                         op->o_bd->bd_info = (BackendInfo *)on;
1229                         if ( rc == LDAP_SUCCESS ) {
1230                                 for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1231                                         (void)memberof_value_modify( op, rs,
1232                                                         &vals[ i ], mo->mo_ad_member,
1233                                                         &op->o_req_dn, &op->o_req_ndn,
1234                                                         NULL, NULL );
1235                                 }
1236                                 ber_bvarray_free_x( vals, op->o_tmpmemctx );
1237                         }
1238
1239                         if ( ml->sml_op == LDAP_MOD_DELETE ) {
1240                                 break;
1241                         }
1242                         /* fall thru */
1243
1244                 case LDAP_MOD_ADD:
1245                         assert( vals != NULL );
1246
1247                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1248                                 memberof_value_modify( op, rs,
1249                                                 &vals[ i ], mo->mo_ad_member,
1250                                                 NULL, NULL,
1251                                                 &op->o_req_dn, &op->o_req_ndn );
1252                         }
1253                         break;
1254
1255                 default:
1256                         assert( 0 );
1257                 }
1258         }
1259
1260         if ( memberof_isGroupOrMember( op, &iswhat ) == LDAP_SUCCESS
1261                         && ( iswhat & MEMBEROF_IS_GROUP ) )
1262         {
1263                 for ( ml = op->orm_modlist; ml; ml = ml->sml_next ) {
1264                         if ( ml->sml_desc != mo->mo_ad_member ) {
1265                                 continue;
1266                         }
1267
1268                         switch ( ml->sml_op ) {
1269                         case LDAP_MOD_DELETE:
1270                                 vals = ml->sml_nvalues;
1271                                 if ( vals != NULL ) {
1272                                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1273                                                 memberof_value_modify( op, rs,
1274                                                                 &vals[ i ], mo->mo_ad_memberof,
1275                                                                 &op->o_req_dn, &op->o_req_ndn,
1276                                                                 NULL, NULL );
1277                                         }
1278                                         break;
1279                                 }
1280                                 /* fall thru */
1281
1282                         case LDAP_MOD_REPLACE:
1283                                 /* delete all ... */
1284                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1285                                 rc = backend_attribute( op, NULL, &op->o_req_ndn,
1286                                                 mo->mo_ad_member, &vals, ACL_READ );
1287                                 op->o_bd->bd_info = (BackendInfo *)on;
1288                                 if ( rc == LDAP_SUCCESS ) {
1289                                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1290                                                 (void)memberof_value_modify( op, rs,
1291                                                                 &vals[ i ], mo->mo_ad_memberof,
1292                                                                 &op->o_req_dn, &op->o_req_ndn,
1293                                                                 NULL, NULL );
1294                                         }
1295                                         ber_bvarray_free_x( vals, op->o_tmpmemctx );
1296                                 }
1297
1298                                 if ( ml->sml_op == LDAP_MOD_DELETE ) {
1299                                         break;
1300                                 }
1301                                 /* fall thru */
1302
1303                         case LDAP_MOD_ADD:
1304                                 assert( ml->sml_nvalues != NULL );
1305                                 vals = ml->sml_nvalues;
1306                                 for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1307                                         memberof_value_modify( op, rs,
1308                                                         &vals[ i ], mo->mo_ad_memberof,
1309                                                         NULL, NULL,
1310                                                         &op->o_req_dn, &op->o_req_ndn );
1311                                 }
1312                                 break;
1313
1314                         default:
1315                                 assert( 0 );
1316                         }
1317                 }
1318         }
1319
1320         return SLAP_CB_CONTINUE;
1321 }
1322
1323 /*
1324  * response callback that adds/deletes member values when a group member
1325  * is modified.
1326  */
1327 static int
1328 memberof_res_rename( Operation *op, SlapReply *rs )
1329 {
1330         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
1331         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1332
1333         struct berval   newPDN, newDN = BER_BVNULL, newPNDN, newNDN;
1334         int             i, rc;
1335         BerVarray       vals;
1336
1337         struct berval   save_dn, save_ndn;
1338         memberof_is_t   iswhat = MEMBEROF_IS_GROUP;
1339
1340         if ( MEMBEROF_REFINT( mo ) ) {
1341                 iswhat |= MEMBEROF_IS_MEMBER;
1342         }
1343
1344         if ( op->orr_nnewSup ) {
1345                 newPNDN = *op->orr_nnewSup;
1346
1347         } else {
1348                 dnParent( &op->o_req_ndn, &newPNDN );
1349         }
1350
1351         build_new_dn( &newNDN, &newPNDN, &op->orr_nnewrdn, op->o_tmpmemctx );
1352
1353         save_dn = op->o_req_dn;
1354         save_ndn = op->o_req_ndn;
1355
1356         op->o_req_dn = newNDN;
1357         op->o_req_ndn = newNDN;
1358         rc = memberof_isGroupOrMember( op, &iswhat );
1359         op->o_req_dn = save_dn;
1360         op->o_req_ndn = save_ndn;
1361
1362         if ( rc != LDAP_SUCCESS || iswhat == MEMBEROF_IS_NONE ) {
1363                 goto done;
1364         }
1365
1366         if ( op->orr_newSup ) {
1367                 newPDN = *op->orr_newSup;
1368
1369         } else {
1370                 dnParent( &op->o_req_dn, &newPDN );
1371         }
1372
1373         build_new_dn( &newDN, &newPDN, &op->orr_newrdn, op->o_tmpmemctx );
1374
1375         if ( iswhat & MEMBEROF_IS_GROUP ) {
1376                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1377                 rc = backend_attribute( op, NULL, &newNDN,
1378                                 mo->mo_ad_member, &vals, ACL_READ );
1379                 op->o_bd->bd_info = (BackendInfo *)on;
1380
1381                 if ( rc == LDAP_SUCCESS ) {
1382                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1383                                 (void)memberof_value_modify( op, rs,
1384                                                 &vals[ i ], mo->mo_ad_memberof,
1385                                                 &op->o_req_dn, &op->o_req_ndn,
1386                                                 &newDN, &newNDN );
1387                         }
1388                         ber_bvarray_free_x( vals, op->o_tmpmemctx );
1389                 }
1390         }
1391
1392         if ( MEMBEROF_REFINT( mo ) && ( iswhat & MEMBEROF_IS_MEMBER ) ) {
1393                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1394                 rc = backend_attribute( op, NULL, &newNDN,
1395                                 mo->mo_ad_memberof, &vals, ACL_READ );
1396                 op->o_bd->bd_info = (BackendInfo *)on;
1397
1398                 if ( rc == LDAP_SUCCESS ) {
1399                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1400                                 (void)memberof_value_modify( op, rs,
1401                                                 &vals[ i ], mo->mo_ad_member,
1402                                                 &op->o_req_dn, &op->o_req_ndn,
1403                                                 &newDN, &newNDN );
1404                         }
1405                         ber_bvarray_free_x( vals, op->o_tmpmemctx );
1406                 }
1407         }
1408
1409 done:;
1410         if ( !BER_BVISNULL( &newDN ) ) {
1411                 op->o_tmpfree( newDN.bv_val, op->o_tmpmemctx );
1412         }
1413         op->o_tmpfree( newNDN.bv_val, op->o_tmpmemctx );
1414
1415         return SLAP_CB_CONTINUE;
1416 }
1417
1418 static int
1419 memberof_response( Operation *op, SlapReply *rs )
1420 {
1421         if ( rs->sr_err != LDAP_SUCCESS ) {
1422                 return SLAP_CB_CONTINUE;
1423         }
1424
1425         switch ( op->o_tag ) {
1426         case LDAP_REQ_ADD:
1427                 return memberof_res_add( op, rs );
1428
1429         case LDAP_REQ_DELETE:
1430                 return memberof_res_delete( op, rs );
1431
1432         case LDAP_REQ_MODIFY:
1433                 return memberof_res_modify( op, rs );
1434
1435         case LDAP_REQ_MODDN:
1436                 return memberof_res_rename( op, rs );
1437
1438         default:
1439                 return SLAP_CB_CONTINUE;
1440         }
1441 }
1442
1443 static int
1444 memberof_db_init(
1445         BackendDB       *be,
1446         ConfigReply     *cr )
1447 {
1448         slap_overinst   *on = (slap_overinst *)be->bd_info;
1449         memberof_t      tmp_mo = { 0 }, *mo;
1450
1451         int             rc;
1452         const char      *text = NULL;
1453
1454         rc = slap_str2ad( SLAPD_MEMBEROF_ATTR, &tmp_mo.mo_ad_memberof, &text );
1455         if ( rc != LDAP_SUCCESS ) {
1456                 Debug( LDAP_DEBUG_ANY,
1457                         "memberof_db_init: "
1458                         "unable to find attribute=\"%s\": %s (%d)\n",
1459                         SLAPD_MEMBEROF_ATTR, text, rc );
1460                 return rc;
1461         }
1462
1463         rc = slap_str2ad( SLAPD_GROUP_ATTR, &tmp_mo.mo_ad_member, &text );
1464         if ( rc != LDAP_SUCCESS ) {
1465                 Debug( LDAP_DEBUG_ANY,
1466                         "memberof_db_init: "
1467                         "unable to find attribute=\"%s\": %s (%d)\n",
1468                         SLAPD_GROUP_ATTR, text, rc );
1469                 return rc;
1470         }
1471
1472         tmp_mo.mo_oc_group = oc_find( SLAPD_GROUP_CLASS );
1473         if ( tmp_mo.mo_oc_group == NULL ) {
1474                 Debug( LDAP_DEBUG_ANY,
1475                         "memberof_db_init: "
1476                         "unable to find objectClass=\"%s\"\n",
1477                         SLAPD_GROUP_CLASS, 0, 0 );
1478                 return 1;
1479         }
1480
1481         mo = (memberof_t *)ch_calloc( 1, sizeof( memberof_t ) );
1482         *mo = tmp_mo;
1483
1484         on->on_bi.bi_private = (void *)mo;
1485
1486         return 0;
1487 }
1488
1489 enum {
1490         MO_DN = 1,
1491         MO_DANGLING,
1492         MO_REFINT,
1493 #if 0
1494         MO_REVERSE,
1495 #endif
1496         MO_GROUP_OC,
1497         MO_MEMBER_AD,
1498         MO_MEMBER_OF_AD
1499 };
1500
1501 static ConfigDriver mo_cf_gen;
1502
1503 #define OID             "1.3.6.1.4.1.7136.2.666.4"
1504 #define OIDAT           OID ".1.1"
1505 #define OIDCFGAT        OID ".1.2"
1506 #define OIDOC           OID ".2.1"
1507 #define OIDCFGOC        OID ".2.2"
1508
1509
1510 static ConfigTable mo_cfg[] = {
1511         { "memberof-dn", "modifiersName",
1512                 2, 2, 0, ARG_MAGIC|ARG_DN|MO_DN, mo_cf_gen,
1513                 "( OLcfgOvAt:18.0 NAME 'olcMemberOfDN' "
1514                         "DESC 'DN to be used as modifiersName' "
1515                         "SYNTAX OMsDN SINGLE-VALUE )",
1516                 NULL, NULL },
1517
1518         { "memberof-dangling", "ignore|drop|error",
1519                 2, 2, 0, ARG_MAGIC|MO_DANGLING, mo_cf_gen,
1520                 "( OLcfgOvAt:18.1 NAME 'olcMemberOfDangling' "
1521                         "DESC 'Behavior with respect to dangling members, "
1522                                 "constrained to ignore, drop, error' "
1523                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",
1524                 NULL, NULL },
1525
1526         { "memberof-refint", "true|FALSE",
1527                 2, 2, 0, ARG_MAGIC|ARG_ON_OFF|MO_REFINT, mo_cf_gen,
1528                 "( OLcfgOvAt:18.2 NAME 'olcMemberOfRefInt' "
1529                         "DESC 'Take care of referential integrity' "
1530                         "SYNTAX OMsBoolean SINGLE-VALUE )",
1531                 NULL, NULL },
1532
1533         { "memberof-group-oc", "objectClass",
1534                 2, 2, 0, ARG_MAGIC|MO_GROUP_OC, mo_cf_gen,
1535                 "( OLcfgOvAt:18.3 NAME 'olcMemberOfGroupOC' "
1536                         "DESC 'Group objectClass' "
1537                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",
1538                 NULL, NULL },
1539
1540         { "memberof-member-ad", "member attribute",
1541                 2, 2, 0, ARG_MAGIC|MO_MEMBER_AD, mo_cf_gen,
1542                 "( OLcfgOvAt:18.4 NAME 'olcMemberOfMemberAD' "
1543                         "DESC 'member attribute' "
1544                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",
1545                 NULL, NULL },
1546
1547         { "memberof-memberof-ad", "memberOf attribute",
1548                 2, 2, 0, ARG_MAGIC|MO_MEMBER_OF_AD, mo_cf_gen,
1549                 "( OLcfgOvAt:18.5 NAME 'olcMemberOfMemberOfAD' "
1550                         "DESC 'memberOf attribute' "
1551                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",
1552                 NULL, NULL },
1553
1554 #if 0
1555         { "memberof-reverse", "true|FALSE",
1556                 2, 2, 0, ARG_MAGIC|ARG_ON_OFF|MO_REVERSE, mo_cf_gen,
1557                 "( OLcfgOvAt:18.6 NAME 'olcMemberOfReverse' "
1558                         "DESC 'Take care of referential integrity "
1559                                 "also when directly modifying memberOf' "
1560                         "SYNTAX OMsBoolean SINGLE-VALUE )",
1561                 NULL, NULL },
1562 #endif
1563
1564         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
1565 };
1566
1567 static ConfigOCs mo_ocs[] = {
1568         { "( OLcfgOvOc:18.1 "
1569                 "NAME 'olcMemberOf' "
1570                 "DESC 'Member-of configuration' "
1571                 "SUP olcOverlayConfig "
1572                 "MAY ( "
1573                         "olcMemberOfDN "
1574                         "$ olcMemberOfDangling "
1575                         "$ olcMemberOfRefInt "
1576                         "$ olcMemberOfGroupOC "
1577                         "$ olcMemberOfMemberAD "
1578                         "$ olcMemberOfMemberOfAD "
1579 #if 0
1580                         "$ olcMemberOfReverse "
1581 #endif
1582                         ") "
1583                 ")",
1584                 Cft_Overlay, mo_cfg, NULL, NULL },
1585         { NULL, 0, NULL }
1586 };
1587
1588 static slap_verbmasks dangling_mode[] = {
1589         { BER_BVC( "ignore" ),          MEMBEROF_NONE },
1590         { BER_BVC( "drop" ),            MEMBEROF_FDANGLING_DROP },
1591         { BER_BVC( "error" ),           MEMBEROF_FDANGLING_ERROR },
1592         { BER_BVNULL,                   0 }
1593 };
1594
1595 static int
1596 memberof_make_group_filter( memberof_t *mo )
1597 {
1598         char            *ptr;
1599
1600         if ( !BER_BVISNULL( &mo->mo_groupFilterstr ) ) {
1601                 ch_free( mo->mo_groupFilterstr.bv_val );
1602         }
1603
1604         mo->mo_groupFilter.f_choice = LDAP_FILTER_EQUALITY;
1605         mo->mo_groupFilter.f_ava = &mo->mo_groupAVA;
1606
1607         mo->mo_groupFilter.f_av_desc = slap_schema.si_ad_objectClass;
1608         mo->mo_groupFilter.f_av_value = mo->mo_oc_group->soc_cname;
1609
1610         mo->mo_groupFilterstr.bv_len = STRLENOF( "(=)" )
1611                 + slap_schema.si_ad_objectClass->ad_cname.bv_len
1612                 + mo->mo_oc_group->soc_cname.bv_len;
1613         ptr = mo->mo_groupFilterstr.bv_val = ch_malloc( mo->mo_groupFilterstr.bv_len + 1 );
1614         *ptr++ = '(';
1615         ptr = lutil_strcopy( ptr, slap_schema.si_ad_objectClass->ad_cname.bv_val );
1616         *ptr++ = '=';
1617         ptr = lutil_strcopy( ptr, mo->mo_oc_group->soc_cname.bv_val );
1618         *ptr++ = ')';
1619         *ptr = '\0';
1620
1621         return 0;
1622 }
1623
1624 static int
1625 memberof_make_member_filter( memberof_t *mo )
1626 {
1627         char            *ptr;
1628
1629         if ( !BER_BVISNULL( &mo->mo_memberFilterstr ) ) {
1630                 ch_free( mo->mo_memberFilterstr.bv_val );
1631         }
1632
1633         mo->mo_memberFilter.f_choice = LDAP_FILTER_PRESENT;
1634         mo->mo_memberFilter.f_desc = mo->mo_ad_memberof;
1635
1636         mo->mo_memberFilterstr.bv_len = STRLENOF( "(=*)" )
1637                 + mo->mo_ad_memberof->ad_cname.bv_len;
1638         ptr = mo->mo_memberFilterstr.bv_val = ch_malloc( mo->mo_memberFilterstr.bv_len + 1 );
1639         *ptr++ = '(';
1640         ptr = lutil_strcopy( ptr, mo->mo_ad_memberof->ad_cname.bv_val );
1641         ptr = lutil_strcopy( ptr, "=*)" );
1642
1643         return 0;
1644 }
1645
1646 static int
1647 mo_cf_gen( ConfigArgs *c )
1648 {
1649         slap_overinst   *on = (slap_overinst *)c->bi;
1650         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1651
1652         int             i, rc = 0;
1653
1654         if ( c->op == SLAP_CONFIG_EMIT ) {
1655                 struct berval bv = BER_BVNULL;
1656
1657                 switch( c->type ) {
1658                 case MO_DN:
1659                         value_add_one( &c->rvalue_vals, &mo->mo_dn );
1660                         value_add_one( &c->rvalue_nvals, &mo->mo_ndn );
1661                         break;
1662
1663                 case MO_DANGLING:
1664                         enum_to_verb( dangling_mode, (mo->mo_flags & MEMBEROF_FDANGLING_MASK), &bv );
1665                         if ( BER_BVISNULL( &bv ) ) {
1666                                 /* there's something wrong... */
1667                                 assert( 0 );
1668                                 rc = 1;
1669
1670                         } else {
1671                                 value_add_one( &c->rvalue_vals, &bv );
1672                         }
1673                         break;
1674
1675                 case MO_REFINT:
1676                         c->value_int = MEMBEROF_REFINT( mo );
1677                         break;
1678
1679 #if 0
1680                 case MO_REVERSE:
1681                         c->value_int = MEMBEROF_REVERSE( mo );
1682                         break;
1683 #endif
1684
1685                 case MO_GROUP_OC:
1686                         assert( mo->mo_oc_group != NULL );
1687                         value_add_one( &c->rvalue_vals, &mo->mo_oc_group->soc_cname );
1688                         break;
1689
1690                 case MO_MEMBER_AD:
1691                         assert( mo->mo_ad_member != NULL );
1692                         value_add_one( &c->rvalue_vals, &mo->mo_ad_member->ad_cname );
1693                         break;
1694
1695                 case MO_MEMBER_OF_AD:
1696                         assert( mo->mo_ad_memberof != NULL );
1697                         value_add_one( &c->rvalue_vals, &mo->mo_ad_memberof->ad_cname );
1698                         break;
1699
1700                 default:
1701                         assert( 0 );
1702                         return 1;
1703                 }
1704
1705                 return rc;
1706
1707         } else if ( c->op == LDAP_MOD_DELETE ) {
1708                 return 1;       /* FIXME */
1709
1710         } else {
1711                 switch( c->type ) {
1712                 case MO_DN:
1713                         if ( !BER_BVISNULL( &mo->mo_dn ) ) {
1714                                 ber_memfree( mo->mo_dn.bv_val );
1715                                 ber_memfree( mo->mo_ndn.bv_val );
1716                         }
1717                         mo->mo_dn = c->value_dn;
1718                         mo->mo_ndn = c->value_ndn;
1719                         break;
1720
1721                 case MO_DANGLING:
1722                         i = verb_to_mask( c->argv[ 1 ], dangling_mode );
1723                         if ( BER_BVISNULL( &dangling_mode[ i ].word ) ) {
1724                                 return 1;
1725                         }
1726
1727                         mo->mo_flags &= ~MEMBEROF_FDANGLING_MASK;
1728                         mo->mo_flags |= dangling_mode[ i ].mask;
1729                         break;
1730
1731                 case MO_REFINT:
1732                         if ( c->value_int ) {
1733                                 mo->mo_flags |= MEMBEROF_FREFINT;
1734
1735                         } else {
1736                                 mo->mo_flags &= ~MEMBEROF_FREFINT;
1737                         }
1738                         break;
1739
1740 #if 0
1741                 case MO_REVERSE:
1742                         if ( c->value_int ) {
1743                                 mo->mo_flags |= MEMBEROF_FREVERSE;
1744
1745                         } else {
1746                                 mo->mo_flags &= ~MEMBEROF_FREVERSE;
1747                         }
1748                         break;
1749 #endif
1750
1751                 case MO_GROUP_OC: {
1752                         ObjectClass     *oc = NULL;
1753
1754                         oc = oc_find( c->argv[ 1 ] );
1755                         if ( oc == NULL ) {
1756                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1757                                         "unable to find group objectClass=\"%s\"",
1758                                         c->argv[ 1 ] );
1759                                 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n",
1760                                         c->log, c->cr_msg, 0 );
1761                                 return 1;
1762                         }
1763
1764                         mo->mo_oc_group = oc;
1765                         memberof_make_group_filter( mo );
1766                         } break;
1767
1768                 case MO_MEMBER_AD: {
1769                         AttributeDescription    *ad = NULL;
1770                         const char              *text = NULL;
1771
1772
1773                         rc = slap_str2ad( c->argv[ 1 ], &ad, &text );
1774                         if ( rc != LDAP_SUCCESS ) {
1775                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1776                                         "unable to find member attribute=\"%s\": %s (%d)",
1777                                         c->argv[ 1 ], text, rc );
1778                                 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n",
1779                                         c->log, c->cr_msg, 0 );
1780                                 return 1;
1781                         }
1782
1783                         if ( !is_at_syntax( ad->ad_type, SLAPD_DN_SYNTAX )              /* e.g. "member" */
1784                                 && !is_at_syntax( ad->ad_type, SLAPD_NAMEUID_SYNTAX ) ) /* e.g. "uniqueMember" */
1785                         {
1786                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1787                                         "member attribute=\"%s\" must either "
1788                                         "have DN (%s) or nameUID (%s) syntax",
1789                                         c->argv[ 1 ], SLAPD_DN_SYNTAX, SLAPD_NAMEUID_SYNTAX );
1790                                 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n",
1791                                         c->log, c->cr_msg, 0 );
1792                                 return 1;
1793                         }
1794
1795                         mo->mo_ad_member = ad;
1796                         } break;
1797
1798                 case MO_MEMBER_OF_AD: {
1799                         AttributeDescription    *ad = NULL;
1800                         const char              *text = NULL;
1801
1802
1803                         rc = slap_str2ad( c->argv[ 1 ], &ad, &text );
1804                         if ( rc != LDAP_SUCCESS ) {
1805                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1806                                         "unable to find memberof attribute=\"%s\": %s (%d)",
1807                                         c->argv[ 1 ], text, rc );
1808                                 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n",
1809                                         c->log, c->cr_msg, 0 );
1810                                 return 1;
1811                         }
1812
1813                         if ( !is_at_syntax( ad->ad_type, SLAPD_DN_SYNTAX )              /* e.g. "member" */
1814                                 && !is_at_syntax( ad->ad_type, SLAPD_NAMEUID_SYNTAX ) ) /* e.g. "uniqueMember" */
1815                         {
1816                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1817                                         "memberof attribute=\"%s\" must either "
1818                                         "have DN (%s) or nameUID (%s) syntax",
1819                                         c->argv[ 1 ], SLAPD_DN_SYNTAX, SLAPD_NAMEUID_SYNTAX );
1820                                 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n",
1821                                         c->log, c->cr_msg, 0 );
1822                                 return 1;
1823                         }
1824
1825                         mo->mo_ad_memberof = ad;
1826                         memberof_make_member_filter( mo );
1827                         } break;
1828
1829                 default:
1830                         assert( 0 );
1831                         return 1;
1832                 }
1833         }
1834
1835         return 0;
1836 }
1837
1838 static int
1839 memberof_db_open(
1840         BackendDB       *be,
1841         ConfigReply     *cr )
1842 {
1843         slap_overinst   *on = (slap_overinst *)be->bd_info;
1844         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1845
1846         if ( BER_BVISNULL( &mo->mo_dn ) ) {
1847                 ber_dupbv( &mo->mo_dn, &be->be_rootdn );
1848                 ber_dupbv( &mo->mo_ndn, &be->be_rootndn );
1849         }
1850
1851         if ( BER_BVISNULL( &mo->mo_groupFilterstr ) ) {
1852                 memberof_make_group_filter( mo );
1853         }
1854
1855         if ( BER_BVISNULL( &mo->mo_memberFilterstr ) ) {
1856                 memberof_make_member_filter( mo );
1857         }
1858
1859         return 0;
1860 }
1861
1862 static int
1863 memberof_db_destroy(
1864         BackendDB       *be,
1865         ConfigReply     *cr )
1866 {
1867         slap_overinst   *on = (slap_overinst *)be->bd_info;
1868         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1869
1870         if ( mo ) {
1871                 if ( !BER_BVISNULL( &mo->mo_dn ) ) {
1872                         ber_memfree( mo->mo_dn.bv_val );
1873                         ber_memfree( mo->mo_ndn.bv_val );
1874                 }
1875
1876                 if ( !BER_BVISNULL( &mo->mo_groupFilterstr ) ) {
1877                         ber_memfree( mo->mo_groupFilterstr.bv_val );
1878                 }
1879
1880                 if ( !BER_BVISNULL( &mo->mo_memberFilterstr ) ) {
1881                         ber_memfree( mo->mo_memberFilterstr.bv_val );
1882                 }
1883
1884                 ber_memfree( mo );
1885         }
1886
1887         return 0;
1888 }
1889
1890 /* unused */
1891 static AttributeDescription     *ad_memberOf;
1892
1893 static struct {
1894         char    *desc;
1895         AttributeDescription **adp;
1896 } as[] = {
1897         { "( 1.2.840.113556.1.2.102 "
1898                 "NAME 'memberOf' "
1899                 "DESC 'Group that the entry belongs to' "
1900                 "SYNTAX '1.3.6.1.4.1.1466.115.121.1.12' "
1901                 "EQUALITY distinguishedNameMatch "      /* added */
1902                 "USAGE dSAOperation "                   /* added; questioned */
1903                 /* "NO-USER-MODIFICATION " */           /* add? */
1904                 "X-ORIGIN 'iPlanet Delegated Administrator' )",
1905                 &ad_memberOf },
1906         { NULL }
1907 };
1908
1909 #if SLAPD_OVER_MEMBEROF == SLAPD_MOD_DYNAMIC
1910 static
1911 #endif /* SLAPD_OVER_MEMBEROF == SLAPD_MOD_DYNAMIC */
1912 int
1913 memberof_initialize( void )
1914 {
1915         int                     code, i;
1916
1917         for ( i = 0; as[ i ].desc != NULL; i++ ) {
1918                 code = register_at( as[ i ].desc, as[ i ].adp, 0 );
1919                 if ( code ) {
1920                         Debug( LDAP_DEBUG_ANY,
1921                                 "memberof_initialize: register_at #%d failed\n",
1922                                 i, 0, 0 );
1923                         return code;
1924                 }
1925         }
1926
1927         memberof.on_bi.bi_type = "memberof";
1928
1929         memberof.on_bi.bi_db_init = memberof_db_init;
1930         memberof.on_bi.bi_db_open = memberof_db_open;
1931         memberof.on_bi.bi_db_destroy = memberof_db_destroy;
1932
1933         memberof.on_bi.bi_op_add = memberof_op_add;
1934         memberof.on_bi.bi_op_delete = memberof_op_delete;
1935         memberof.on_bi.bi_op_modify = memberof_op_modify;
1936
1937         memberof.on_response = memberof_response;
1938
1939         memberof.on_bi.bi_cf_ocs = mo_ocs;
1940
1941         code = config_register_schema( mo_cfg, mo_ocs );
1942         if ( code ) return code;
1943
1944         return overlay_register( &memberof );
1945 }
1946
1947 #if SLAPD_OVER_MEMBEROF == SLAPD_MOD_DYNAMIC
1948 int
1949 init_module( int argc, char *argv[] )
1950 {
1951         return memberof_initialize();
1952 }
1953 #endif /* SLAPD_OVER_MEMBEROF == SLAPD_MOD_DYNAMIC */
1954
1955 #endif /* SLAPD_OVER_MEMBEROF */