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         ber_int_t               mo_dangling_err;
 159
 160 #define MEMBEROF_CHK(mo,f) \
 161         (((mo)->mo_flags & (f)) == (f))
 162 #define MEMBEROF_DANGLING_CHECK(mo) \
 163         ((mo)->mo_flags & MEMBEROF_FDANGLING_MASK)
 164 #define MEMBEROF_DANGLING_DROP(mo) \
 165         MEMBEROF_CHK((mo),MEMBEROF_FDANGLING_DROP)
 166 #define MEMBEROF_DANGLING_ERROR(mo) \
 167         MEMBEROF_CHK((mo),MEMBEROF_FDANGLING_ERROR)
 168 #define MEMBEROF_REFINT(mo) \
 169         MEMBEROF_CHK((mo),MEMBEROF_FREFINT)
 170 #define MEMBEROF_REVERSE(mo) \
 171         MEMBEROF_CHK((mo),MEMBEROF_FREVERSE)
 172 } memberof_t;
 173
 174 typedef enum memberof_is_t {
 175         MEMBEROF_IS_NONE = 0x00,
 176         MEMBEROF_IS_GROUP = 0x01,
 177         MEMBEROF_IS_MEMBER = 0x02,
 178         MEMBEROF_IS_BOTH = (MEMBEROF_IS_GROUP|MEMBEROF_IS_MEMBER)
 179 } memberof_is_t;
 180
 181 typedef struct memberof_cookie_t {
 182         AttributeDescription    *ad;
 183         BerVarray               vals;
 184         int                     foundit;
 185 } memberof_cookie_t;
 186
 187 typedef struct memberof_cbinfo_t {
 188         slap_overinst *on;
 189         BerVarray member;
 190         BerVarray memberof;
 191         memberof_is_t what;
 192 } memberof_cbinfo_t;
 193
 194 static int
 195 memberof_isGroupOrMember_cb( Operation *op, SlapReply *rs )
 196 {
 197         if ( rs->sr_type == REP_SEARCH ) {
 198                 memberof_cookie_t       *mc;
 199
 200                 mc = (memberof_cookie_t *)op->o_callback->sc_private;
 201                 mc->foundit = 1;
 202         }
 203
 204         return 0;
 205 }
 206
 207 /*
 208  * callback for internal search that saves the member attribute values
 209  * of groups being deleted.
 210  */
 211 static int
 212 memberof_saveMember_cb( Operation *op, SlapReply *rs )
 213 {
 214         if ( rs->sr_type == REP_SEARCH ) {
 215                 memberof_cookie_t       *mc;
 216                 Attribute               *a;
 217
 218                 mc = (memberof_cookie_t *)op->o_callback->sc_private;
 219                 mc->foundit = 1;
 220
 221                 assert( rs->sr_entry != NULL );
 222                 assert( rs->sr_entry->e_attrs != NULL );
 223
 224                 a = attr_find( rs->sr_entry->e_attrs, mc->ad );
 225                 if ( a != NULL ) {
 226                         ber_bvarray_dup_x( &mc->vals, a->a_nvals, op->o_tmpmemctx );
 227
 228                         assert( attr_find( a->a_next, mc->ad ) == NULL );
 229                 }
 230         }
 231
 232         return 0;
 233 }
 234
 235 /*
 236  * the delete hook performs an internal search that saves the member
 237  * attribute values of groups being deleted.
 238  */
 239 static int
 240 memberof_isGroupOrMember( Operation *op, memberof_cbinfo_t *mci )
 241 {
 242         slap_overinst           *on = mci->on;
 243         memberof_t              *mo = (memberof_t *)on->on_bi.bi_private;
 244
 245         Operation               op2 = *op;
 246         slap_callback           cb = { 0 };
 247         BackendInfo     *bi = op->o_bd->bd_info;
 248         AttributeName           an[ 2 ];
 249
 250         memberof_is_t           iswhat = MEMBEROF_IS_NONE;
 251         memberof_cookie_t       mc;
 252
 253         assert( mci->what != MEMBEROF_IS_NONE );
 254
 255         cb.sc_private = &mc;
 256         if ( op->o_tag == LDAP_REQ_DELETE ) {
 257                 cb.sc_response = memberof_saveMember_cb;
 258
 259         } else {
 260                 cb.sc_response = memberof_isGroupOrMember_cb;
 261         }
 262
 263         op2.o_tag = LDAP_REQ_SEARCH;
 264         op2.o_callback = &cb;
 265         op2.o_dn = op->o_bd->be_rootdn;
 266         op2.o_ndn = op->o_bd->be_rootndn;
 267
 268         op2.ors_scope = LDAP_SCOPE_BASE;
 269         op2.ors_deref = LDAP_DEREF_NEVER;
 270         BER_BVZERO( &an[ 1 ].an_name );
 271         op2.ors_attrs = an;
 272         op2.ors_attrsonly = 0;
 273         op2.ors_limit = NULL;
 274         op2.ors_slimit = 1;
 275         op2.ors_tlimit = SLAP_NO_LIMIT;
 276
 277         if ( mci->what & MEMBEROF_IS_GROUP ) {
 278                 SlapReply       rs2 = { REP_RESULT };
 279
 280                 mc.ad = mo->mo_ad_member;
 281                 mc.foundit = 0;
 282                 mc.vals = NULL;
 283                 an[ 0 ].an_desc = mo->mo_ad_member;
 284                 an[ 0 ].an_name = an[ 0 ].an_desc->ad_cname;
 285                 op2.ors_filterstr = mo->mo_groupFilterstr;
 286                 op2.ors_filter = &mo->mo_groupFilter;
 287
 288                 op2.o_bd->bd_info = (BackendInfo *)on->on_info;
 289                 (void)op->o_bd->be_search( &op2, &rs2 );
 290                 op2.o_bd->bd_info = bi;
 291
 292                 if ( mc.foundit ) {
 293                         iswhat |= MEMBEROF_IS_GROUP;
 294                         if ( mc.vals ) mci->member = mc.vals;
 295
 296                 }
 297         }
 298
 299         if ( mci->what & MEMBEROF_IS_MEMBER ) {
 300                 SlapReply       rs2 = { REP_RESULT };
 301
 302                 mc.ad = mo->mo_ad_memberof;
 303                 mc.foundit = 0;
 304                 mc.vals = NULL;
 305                 an[ 0 ].an_desc = mo->mo_ad_memberof;
 306                 an[ 0 ].an_name = an[ 0 ].an_desc->ad_cname;
 307                 op2.ors_filterstr = mo->mo_memberFilterstr;
 308                 op2.ors_filter = &mo->mo_memberFilter;
 309
 310                 op2.o_bd->bd_info = (BackendInfo *)on->on_info;
 311                 (void)op->o_bd->be_search( &op2, &rs2 );
 312                 op2.o_bd->bd_info = bi;
 313
 314                 if ( mc.foundit ) {
 315                         iswhat |= MEMBEROF_IS_MEMBER;
 316                         if ( mc.vals ) mci->memberof = mc.vals;
 317
 318                 }
 319         }
 320
 321         mci->what = iswhat;
 322
 323         return LDAP_SUCCESS;
 324 }
 325
 326 /*
 327  * response callback that adds memberof values when a group is modified.
 328  */
 329 static void
 330 memberof_value_modify(
 331         Operation               *op,
 332         struct berval           *ndn,
 333         AttributeDescription    *ad,
 334         struct berval           *old_dn,
 335         struct berval           *old_ndn,
 336         struct berval           *new_dn,
 337         struct berval           *new_ndn )
 338 {
 339         memberof_cbinfo_t *mci = op->o_callback->sc_private;
 340         slap_overinst   *on = mci->on;
 341         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
 342
 343         Operation       op2 = *op;
 344         SlapReply       rs2 = { REP_RESULT };
 345         slap_callback   cb = { NULL, slap_null_cb, NULL, NULL };
 346         Modifications   mod[ 2 ] = { { { 0 } } }, *ml;
 347         struct berval   values[ 4 ], nvalues[ 4 ];
 348         int             mcnt = 0;
 349
 350         op2.o_tag = LDAP_REQ_MODIFY;
 351
 352         op2.o_req_dn = *ndn;
 353         op2.o_req_ndn = *ndn;
 354
 355         op2.o_callback = &cb;
 356         op2.o_dn = op->o_bd->be_rootdn;
 357         op2.o_ndn = op->o_bd->be_rootndn;
 358         op2.orm_modlist = NULL;
 359
 360         if ( !BER_BVISNULL( &mo->mo_ndn ) ) {
 361                 ml = &mod[ mcnt ];
 362                 ml->sml_numvals = 1;
 363                 ml->sml_values = &values[ 0 ];
 364                 ml->sml_values[ 0 ] = mo->mo_dn;
 365                 BER_BVZERO( &ml->sml_values[ 1 ] );
 366                 ml->sml_nvalues = &nvalues[ 0 ];
 367                 ml->sml_nvalues[ 0 ] = mo->mo_ndn;
 368                 BER_BVZERO( &ml->sml_nvalues[ 1 ] );
 369                 ml->sml_desc = slap_schema.si_ad_modifiersName;
 370                 ml->sml_type = ml->sml_desc->ad_cname;
 371                 ml->sml_op = LDAP_MOD_REPLACE;
 372                 ml->sml_flags = SLAP_MOD_INTERNAL;
 373                 ml->sml_next = op2.orm_modlist;
 374                 op2.orm_modlist = ml;
 375
 376                 mcnt++;
 377         }
 378
 379         ml = &mod[ mcnt ];
 380         ml->sml_numvals = 1;
 381         ml->sml_values = &values[ 2 ];
 382         BER_BVZERO( &ml->sml_values[ 1 ] );
 383         ml->sml_nvalues = &nvalues[ 2 ];
 384         BER_BVZERO( &ml->sml_nvalues[ 1 ] );
 385         ml->sml_desc = ad;
 386         ml->sml_type = ml->sml_desc->ad_cname;
 387         ml->sml_flags = SLAP_MOD_INTERNAL;
 388         ml->sml_next = op2.orm_modlist;
 389         op2.orm_modlist = ml;
 390         op2.orm_no_opattrs = 0;
 391
 392         if ( new_ndn != NULL ) {
 393                 assert( !BER_BVISNULL( new_dn ) );
 394                 assert( !BER_BVISNULL( new_ndn ) );
 395
 396                 ml = &mod[ mcnt ];
 397                 ml->sml_op = LDAP_MOD_ADD;
 398
 399                 ml->sml_values[ 0 ] = *new_dn;
 400                 ml->sml_nvalues[ 0 ] = *new_ndn;
 401
 402                 (void)op->o_bd->be_modify( &op2, &rs2 );
 403                 if ( rs2.sr_err != LDAP_SUCCESS ) {
 404                         char buf[ SLAP_TEXT_BUFLEN ];
 405                         snprintf( buf, sizeof( buf ),
 406                                 "memberof_value_modify %s=\"%s\" failed err=%d",
 407                                 ad->ad_cname.bv_val, new_dn->bv_val, rs2.sr_err );
 408                         Debug( LDAP_DEBUG_ANY, "%s: %s\n",
 409                                 op->o_log_prefix, buf, 0 );
 410                 }
 411
 412                 assert( op2.orm_modlist == &mod[ mcnt ] );
 413                 assert( mcnt == 0 || op2.orm_modlist->sml_next == &mod[ 0 ] );
 414                 ml = op2.orm_modlist->sml_next;
 415                 if ( mcnt == 1 ) {
 416                         assert( ml == &mod[ 0 ] );
 417                         ml = ml->sml_next;
 418                 }
 419                 if ( ml != NULL ) {
 420                         slap_mods_free( ml, 1 );
 421                 }
 422
 423                 mod[ 0 ].sml_next = NULL;
 424         }
 425
 426         if ( old_ndn != NULL ) {
 427                 assert( !BER_BVISNULL( old_dn ) );
 428                 assert( !BER_BVISNULL( old_ndn ) );
 429
 430                 ml = &mod[ mcnt ];
 431                 ml->sml_op = LDAP_MOD_DELETE;
 432
 433                 ml->sml_values[ 0 ] = *old_dn;
 434                 ml->sml_nvalues[ 0 ] = *old_ndn;
 435
 436                 (void)op->o_bd->be_modify( &op2, &rs2 );
 437                 if ( rs2.sr_err != LDAP_SUCCESS ) {
 438                         char buf[ SLAP_TEXT_BUFLEN ];
 439                         snprintf( buf, sizeof( buf ),
 440                                 "memberof_value_modify %s=\"%s\" failed err=%d",
 441                                 ad->ad_cname.bv_val, old_dn->bv_val, rs2.sr_err );
 442                         Debug( LDAP_DEBUG_ANY, "%s: %s\n",
 443                                 op->o_log_prefix, buf, 0 );
 444                 }
 445
 446                 assert( op2.orm_modlist == &mod[ mcnt ] );
 447                 ml = op2.orm_modlist->sml_next;
 448                 if ( mcnt == 1 ) {
 449                         assert( ml == &mod[ 0 ] );
 450                         ml = ml->sml_next;
 451                 }
 452                 if ( ml != NULL ) {
 453                         slap_mods_free( ml, 1 );
 454                 }
 455         }
 456
 457         /* FIXME: if old_group_ndn doesn't exist, both delete __and__
 458          * add will fail; better split in two operations, although
 459          * not optimal in terms of performance.  At least it would
 460          * move towards self-repairing capabilities. */
 461 }
 462
 463 static int
 464 memberof_cleanup( Operation *op, SlapReply *rs )
 465 {
 466         slap_callback *sc = op->o_callback;
 467         memberof_cbinfo_t *mci = sc->sc_private;
 468
 469         op->o_callback = sc->sc_next;
 470         if ( mci->memberof )
 471                 ber_bvarray_free_x( mci->memberof, op->o_tmpmemctx );
 472         if ( mci->member )
 473                 ber_bvarray_free_x( mci->member, op->o_tmpmemctx );
 474         op->o_tmpfree( sc, op->o_tmpmemctx );
 475         return 0;
 476 }
 477
 478 static int memberof_res_add( Operation *op, SlapReply *rs );
 479 static int memberof_res_delete( Operation *op, SlapReply *rs );
 480 static int memberof_res_modify( Operation *op, SlapReply *rs );
 481 static int memberof_res_modrdn( Operation *op, SlapReply *rs );
 482
 483 static int
 484 memberof_op_add( Operation *op, SlapReply *rs )
 485 {
 486         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 487         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
 488
 489         Attribute       **ap, **map = NULL;
 490         int             rc = SLAP_CB_CONTINUE;
 491         int             i;
 492         struct berval   save_dn, save_ndn;
 493         slap_callback *sc;
 494         memberof_cbinfo_t *mci;
 495
 496         if ( op->ora_e->e_attrs == NULL ) {
 497                 /* FIXME: global overlay; need to deal with */
 498                 Debug( LDAP_DEBUG_ANY, "%s: memberof_op_add(\"%s\"): "
 499                         "consistency checks not implemented when overlay "
 500                         "is instantiated as global.\n",
 501                         op->o_log_prefix, op->o_req_dn.bv_val, 0 );
 502                 return SLAP_CB_CONTINUE;
 503         }
 504
 505         if ( MEMBEROF_REVERSE( mo ) ) {
 506                 for ( ap = &op->ora_e->e_attrs; *ap; ap = &(*ap)->a_next ) {
 507                         Attribute       *a = *ap;
 508
 509                         if ( a->a_desc == mo->mo_ad_memberof ) {
 510                                 map = ap;
 511                                 break;
 512                         }
 513                 }
 514         }
 515
 516         save_dn = op->o_dn;
 517         save_ndn = op->o_ndn;
 518
 519         if ( MEMBEROF_DANGLING_CHECK( mo )
 520                         && !get_relax( op )
 521                         && is_entry_objectclass_or_sub( op->ora_e, mo->mo_oc_group ) )
 522         {
 523                 op->o_dn = op->o_bd->be_rootdn;
 524                 op->o_ndn = op->o_bd->be_rootndn;
 525                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 526
 527                 for ( ap = &op->ora_e->e_attrs; *ap; ) {
 528                         Attribute       *a = *ap;
 529
 530                         if ( !is_ad_subtype( a->a_desc, mo->mo_ad_member ) ) {
 531                                 ap = &a->a_next;
 532                                 continue;
 533                         }
 534
 535                         assert( a->a_nvals != NULL );
 536
 537                         for ( i = 0; !BER_BVISNULL( &a->a_nvals[ i ] ); i++ ) {
 538                                 Entry           *e = NULL;
 539
 540                                 /* ITS#6670 Ignore member pointing to this entry */
 541                                 if ( dn_match( &a->a_nvals[i], &save_ndn ))
 542                                         continue;
 543
 544                                 rc = be_entry_get_rw( op, &a->a_nvals[ i ],
 545                                                 NULL, NULL, 0, &e );
 546                                 if ( rc == LDAP_SUCCESS ) {
 547                                         be_entry_release_r( op, e );
 548                                         continue;
 549                                 }
 550
 551                                 if ( MEMBEROF_DANGLING_ERROR( mo ) ) {
 552                                         rc = rs->sr_err = mo->mo_dangling_err;
 553                                         rs->sr_text = "adding non-existing object "
 554                                                 "as group member";
 555                                         send_ldap_result( op, rs );
 556                                         goto done;
 557                                 }
 558
 559                                 if ( MEMBEROF_DANGLING_DROP( mo ) ) {
 560                                         int     j;
 561
 562                                         Debug( LDAP_DEBUG_ANY, "%s: memberof_op_add(\"%s\"): "
 563                                                 "member=\"%s\" does not exist (stripping...)\n",
 564                                                 op->o_log_prefix, op->ora_e->e_name.bv_val,
 565                                                 a->a_vals[ i ].bv_val );
 566
 567                                         for ( j = i + 1; !BER_BVISNULL( &a->a_nvals[ j ] ); j++ );
 568                                         ber_memfree( a->a_vals[ i ].bv_val );
 569                                         BER_BVZERO( &a->a_vals[ i ] );
 570                                         if ( a->a_nvals != a->a_vals ) {
 571                                                 ber_memfree( a->a_nvals[ i ].bv_val );
 572                                                 BER_BVZERO( &a->a_nvals[ i ] );
 573                                         }
 574                                         if ( j - i == 1 ) {
 575                                                 break;
 576                                         }
 577
 578                                         AC_MEMCPY( &a->a_vals[ i ], &a->a_vals[ i + 1 ],
 579                                                 sizeof( struct berval ) * ( j - i ) );
 580                                         if ( a->a_nvals != a->a_vals ) {
 581                                                 AC_MEMCPY( &a->a_nvals[ i ], &a->a_nvals[ i + 1 ],
 582                                                         sizeof( struct berval ) * ( j - i ) );
 583                                         }
 584                                         i--;
 585                                         a->a_numvals--;
 586                                 }
 587                         }
 588
 589                         /* If all values have been removed,
 590                          * remove the attribute itself. */
 591                         if ( BER_BVISNULL( &a->a_nvals[ 0 ] ) ) {
 592                                 *ap = a->a_next;
 593                                 attr_free( a );
 594
 595                         } else {
 596                                 ap = &a->a_next;
 597                         }
 598                 }
 599                 op->o_dn = save_dn;
 600                 op->o_ndn = save_ndn;
 601                 op->o_bd->bd_info = (BackendInfo *)on;
 602         }
 603
 604         if ( map != NULL ) {
 605                 Attribute               *a = *map;
 606                 AccessControlState      acl_state = ACL_STATE_INIT;
 607
 608                 for ( i = 0; !BER_BVISNULL( &a->a_nvals[ i ] ); i++ ) {
 609                         Entry           *e;
 610
 611                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 612                         /* access is checked with the original identity */
 613                         rc = access_allowed( op, op->ora_e, mo->mo_ad_memberof,
 614                                         &a->a_nvals[ i ], ACL_WADD,
 615                                         &acl_state );
 616                         if ( rc == 0 ) {
 617                                 rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 618                                 rs->sr_text = NULL;
 619                                 send_ldap_result( op, rs );
 620                                 goto done;
 621                         }
 622                         /* ITS#6670 Ignore member pointing to this entry */
 623                         if ( dn_match( &a->a_nvals[i], &save_ndn ))
 624                                 continue;
 625
 626                         rc = be_entry_get_rw( op, &a->a_nvals[ i ],
 627                                         NULL, NULL, 0, &e );
 628                         op->o_bd->bd_info = (BackendInfo *)on;
 629                         if ( rc != LDAP_SUCCESS ) {
 630                                 if ( get_relax( op ) ) {
 631                                         continue;
 632                                 }
 633
 634                                 if ( MEMBEROF_DANGLING_ERROR( mo ) ) {
 635                                         rc = rs->sr_err = mo->mo_dangling_err;
 636                                         rs->sr_text = "adding non-existing object "
 637                                                 "as memberof";
 638                                         send_ldap_result( op, rs );
 639                                         goto done;
 640                                 }
 641
 642                                 if ( MEMBEROF_DANGLING_DROP( mo ) ) {
 643                                         int     j;
 644
 645                                         Debug( LDAP_DEBUG_ANY, "%s: memberof_op_add(\"%s\"): "
 646                                                 "memberof=\"%s\" does not exist (stripping...)\n",
 647                                                 op->o_log_prefix, op->ora_e->e_name.bv_val,
 648                                                 a->a_nvals[ i ].bv_val );
 649
 650                                         for ( j = i + 1; !BER_BVISNULL( &a->a_nvals[ j ] ); j++ );
 651                                         ber_memfree( a->a_vals[ i ].bv_val );
 652                                         BER_BVZERO( &a->a_vals[ i ] );
 653                                         if ( a->a_nvals != a->a_vals ) {
 654                                                 ber_memfree( a->a_nvals[ i ].bv_val );
 655                                                 BER_BVZERO( &a->a_nvals[ i ] );
 656                                         }
 657                                         if ( j - i == 1 ) {
 658                                                 break;
 659                                         }
 660
 661                                         AC_MEMCPY( &a->a_vals[ i ], &a->a_vals[ i + 1 ],
 662                                                 sizeof( struct berval ) * ( j - i ) );
 663                                         if ( a->a_nvals != a->a_vals ) {
 664                                                 AC_MEMCPY( &a->a_nvals[ i ], &a->a_nvals[ i + 1 ],
 665                                                         sizeof( struct berval ) * ( j - i ) );
 666                                         }
 667                                         i--;
 668                                 }
 669
 670                                 continue;
 671                         }
 672
 673                         /* access is checked with the original identity */
 674                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 675                         rc = access_allowed( op, e, mo->mo_ad_member,
 676                                         &op->o_req_ndn, ACL_WADD, NULL );
 677                         be_entry_release_r( op, e );
 678                         op->o_bd->bd_info = (BackendInfo *)on;
 679
 680                         if ( !rc ) {
 681                                 rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 682                                 rs->sr_text = "insufficient access to object referenced by memberof";
 683                                 send_ldap_result( op, rs );
 684                                 goto done;
 685                         }
 686                 }
 687
 688                 if ( BER_BVISNULL( &a->a_nvals[ 0 ] ) ) {
 689                         *map = a->a_next;
 690                         attr_free( a );
 691                 }
 692         }
 693
 694         rc = SLAP_CB_CONTINUE;
 695
 696         sc = op->o_tmpalloc( sizeof(slap_callback)+sizeof(*mci), op->o_tmpmemctx );
 697         sc->sc_private = sc+1;
 698         sc->sc_response = memberof_res_add;
 699         sc->sc_cleanup = memberof_cleanup;
 700         mci = sc->sc_private;
 701         mci->on = on;
 702         mci->member = NULL;
 703         mci->memberof = NULL;
 704         sc->sc_next = op->o_callback;
 705         op->o_callback = sc;
 706
 707 done:;
 708         op->o_dn = save_dn;
 709         op->o_ndn = save_ndn;
 710         op->o_bd->bd_info = (BackendInfo *)on;
 711
 712         return rc;
 713 }
 714
 715 static int
 716 memberof_op_delete( Operation *op, SlapReply *rs )
 717 {
 718         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 719         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
 720
 721         slap_callback *sc;
 722         memberof_cbinfo_t *mci;
 723
 724
 725         sc = op->o_tmpalloc( sizeof(slap_callback)+sizeof(*mci), op->o_tmpmemctx );
 726         sc->sc_private = sc+1;
 727         sc->sc_response = memberof_res_delete;
 728         sc->sc_cleanup = memberof_cleanup;
 729         mci = sc->sc_private;
 730         mci->on = on;
 731         mci->member = NULL;
 732         mci->memberof = NULL;
 733         mci->what = MEMBEROF_IS_GROUP;
 734         if ( MEMBEROF_REFINT( mo ) ) {
 735                 mci->what = MEMBEROF_IS_BOTH;
 736         }
 737
 738         memberof_isGroupOrMember( op, mci );
 739
 740         sc->sc_next = op->o_callback;
 741         op->o_callback = sc;
 742
 743         return SLAP_CB_CONTINUE;
 744 }
 745
 746 static int
 747 memberof_op_modify( Operation *op, SlapReply *rs )
 748 {
 749         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 750         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
 751
 752         Modifications   **mlp, **mmlp = NULL;
 753         int             rc = SLAP_CB_CONTINUE, save_member = 0;
 754         struct berval   save_dn, save_ndn;
 755         slap_callback *sc;
 756         memberof_cbinfo_t *mci, mcis;
 757
 758         if ( MEMBEROF_REVERSE( mo ) ) {
 759                 for ( mlp = &op->orm_modlist; *mlp; mlp = &(*mlp)->sml_next ) {
 760                         Modifications   *ml = *mlp;
 761
 762                         if ( ml->sml_desc == mo->mo_ad_memberof ) {
 763                                 mmlp = mlp;
 764                                 break;
 765                         }
 766                 }
 767         }
 768
 769         save_dn = op->o_dn;
 770         save_ndn = op->o_ndn;
 771         mcis.on = on;
 772         mcis.what = MEMBEROF_IS_GROUP;
 773
 774         if ( memberof_isGroupOrMember( op, &mcis ) == LDAP_SUCCESS
 775                 && ( mcis.what & MEMBEROF_IS_GROUP ) )
 776         {
 777                 Modifications *ml;
 778
 779                 for ( ml = op->orm_modlist; ml; ml = ml->sml_next ) {
 780                         if ( ml->sml_desc == mo->mo_ad_member ) {
 781                                 switch ( ml->sml_op ) {
 782                                 case LDAP_MOD_DELETE:
 783                                 case LDAP_MOD_REPLACE:
 784                                         save_member = 1;
 785                                         break;
 786                                 }
 787                         }
 788                 }
 789
 790
 791                 if ( MEMBEROF_DANGLING_CHECK( mo )
 792                                 && !get_relax( op ) )
 793                 {
 794                         op->o_dn = op->o_bd->be_rootdn;
 795                         op->o_ndn = op->o_bd->be_rootndn;
 796                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 797
 798                         assert( op->orm_modlist != NULL );
 799
 800                         for ( mlp = &op->orm_modlist; *mlp; ) {
 801                                 Modifications   *ml = *mlp;
 802                                 int             i;
 803
 804                                 if ( !is_ad_subtype( ml->sml_desc, mo->mo_ad_member ) ) {
 805                                         mlp = &ml->sml_next;
 806                                         continue;
 807                                 }
 808
 809                                 switch ( ml->sml_op ) {
 810                                 case LDAP_MOD_DELETE:
 811                                         /* we don't care about cancellations: if the value
 812                                          * exists, fine; if it doesn't, we let the underlying
 813                                          * database fail as appropriate; */
 814                                         mlp = &ml->sml_next;
 815                                         break;
 816
 817                                 case LDAP_MOD_REPLACE:
 818                                         /* Handle this just like a delete (see above) */
 819                                         if ( !ml->sml_values ) {
 820                                                 mlp = &ml->sml_next;
 821                                                 break;
 822                                         }
 823
 824                                 case LDAP_MOD_ADD:
 825                                         /* NOTE: right now, the attributeType we use
 826                                          * for member must have a normalized value */
 827                                         assert( ml->sml_nvalues != NULL );
 828
 829                                         for ( i = 0; !BER_BVISNULL( &ml->sml_nvalues[ i ] ); i++ ) {
 830                                                 int             rc;
 831                                                 Entry           *e;
 832
 833                                                 /* ITS#6670 Ignore member pointing to this entry */
 834                                                 if ( dn_match( &ml->sml_nvalues[i], &save_ndn ))
 835                                                         continue;
 836
 837                                                 if ( be_entry_get_rw( op, &ml->sml_nvalues[ i ],
 838                                                                 NULL, NULL, 0, &e ) == LDAP_SUCCESS )
 839                                                 {
 840                                                         be_entry_release_r( op, e );
 841                                                         continue;
 842                                                 }
 843
 844                                                 if ( MEMBEROF_DANGLING_ERROR( mo ) ) {
 845                                                         rc = rs->sr_err = mo->mo_dangling_err;
 846                                                         rs->sr_text = "adding non-existing object "
 847                                                                 "as group member";
 848                                                         send_ldap_result( op, rs );
 849                                                         goto done;
 850                                                 }
 851
 852                                                 if ( MEMBEROF_DANGLING_DROP( mo ) ) {
 853                                                         int     j;
 854
 855                                                         Debug( LDAP_DEBUG_ANY, "%s: memberof_op_modify(\"%s\"): "
 856                                                                 "member=\"%s\" does not exist (stripping...)\n",
 857                                                                 op->o_log_prefix, op->o_req_dn.bv_val,
 858                                                                 ml->sml_nvalues[ i ].bv_val );
 859
 860                                                         for ( j = i + 1; !BER_BVISNULL( &ml->sml_nvalues[ j ] ); j++ );
 861                                                         ber_memfree( ml->sml_values[ i ].bv_val );
 862                                                         BER_BVZERO( &ml->sml_values[ i ] );
 863                                                         ber_memfree( ml->sml_nvalues[ i ].bv_val );
 864                                                         BER_BVZERO( &ml->sml_nvalues[ i ] );
 865                                                         ml->sml_numvals--;
 866                                                         if ( j - i == 1 ) {
 867                                                                 break;
 868                                                         }
 869
 870                                                         AC_MEMCPY( &ml->sml_values[ i ], &ml->sml_values[ i + 1 ],
 871                                                                 sizeof( struct berval ) * ( j - i ) );
 872                                                         AC_MEMCPY( &ml->sml_nvalues[ i ], &ml->sml_nvalues[ i + 1 ],
 873                                                                 sizeof( struct berval ) * ( j - i ) );
 874                                                         i--;
 875                                                 }
 876                                         }
 877
 878                                         if ( BER_BVISNULL( &ml->sml_nvalues[ 0 ] ) ) {
 879                                                 *mlp = ml->sml_next;
 880                                                 slap_mod_free( &ml->sml_mod, 0 );
 881                                                 free( ml );
 882
 883                                         } else {
 884                                                 mlp = &ml->sml_next;
 885                                         }
 886
 887                                         break;
 888
 889                                 default:
 890                                         assert( 0 );
 891                                 }
 892                         }
 893                 }
 894         }
 895
 896         if ( mmlp != NULL ) {
 897                 Modifications   *ml = *mmlp;
 898                 int             i;
 899                 Entry           *target;
 900
 901                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 902                 rc = be_entry_get_rw( op, &op->o_req_ndn,
 903                                 NULL, NULL, 0, &target );
 904                 op->o_bd->bd_info = (BackendInfo *)on;
 905                 if ( rc != LDAP_SUCCESS ) {
 906                         rc = rs->sr_err = LDAP_NO_SUCH_OBJECT;
 907                         send_ldap_result( op, rs );
 908                         goto done;
 909                 }
 910
 911                 switch ( ml->sml_op ) {
 912                 case LDAP_MOD_DELETE:
 913                         if ( ml->sml_nvalues != NULL ) {
 914                                 AccessControlState      acl_state = ACL_STATE_INIT;
 915
 916                                 for ( i = 0; !BER_BVISNULL( &ml->sml_nvalues[ i ] ); i++ ) {
 917                                         Entry           *e;
 918
 919                                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 920                                         /* access is checked with the original identity */
 921                                         rc = access_allowed( op, target,
 922                                                         mo->mo_ad_memberof,
 923                                                         &ml->sml_nvalues[ i ],
 924                                                         ACL_WDEL,
 925                                                         &acl_state );
 926                                         if ( rc == 0 ) {
 927                                                 rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 928                                                 rs->sr_text = NULL;
 929                                                 send_ldap_result( op, rs );
 930                                                 goto done2;
 931                                         }
 932
 933                                         rc = be_entry_get_rw( op, &ml->sml_nvalues[ i ],
 934                                                         NULL, NULL, 0, &e );
 935                                         op->o_bd->bd_info = (BackendInfo *)on;
 936                                         if ( rc != LDAP_SUCCESS ) {
 937                                                 if ( get_relax( op ) ) {
 938                                                         continue;
 939                                                 }
 940
 941                                                 if ( MEMBEROF_DANGLING_ERROR( mo ) ) {
 942                                                         rc = rs->sr_err = mo->mo_dangling_err;
 943                                                         rs->sr_text = "deleting non-existing object "
 944                                                                 "as memberof";
 945                                                         send_ldap_result( op, rs );
 946                                                         goto done2;
 947                                                 }
 948
 949                                                 if ( MEMBEROF_DANGLING_DROP( mo ) ) {
 950                                                         int     j;
 951
 952                                                         Debug( LDAP_DEBUG_ANY, "%s: memberof_op_modify(\"%s\"): "
 953                                                                 "memberof=\"%s\" does not exist (stripping...)\n",
 954                                                                 op->o_log_prefix, op->o_req_ndn.bv_val,
 955                                                                 ml->sml_nvalues[ i ].bv_val );
 956
 957                                                         for ( j = i + 1; !BER_BVISNULL( &ml->sml_nvalues[ j ] ); j++ );
 958                                                         ber_memfree( ml->sml_values[ i ].bv_val );
 959                                                         BER_BVZERO( &ml->sml_values[ i ] );
 960                                                         if ( ml->sml_nvalues != ml->sml_values ) {
 961                                                                 ber_memfree( ml->sml_nvalues[ i ].bv_val );
 962                                                                 BER_BVZERO( &ml->sml_nvalues[ i ] );
 963                                                         }
 964                                                         ml->sml_numvals--;
 965                                                         if ( j - i == 1 ) {
 966                                                                 break;
 967                                                         }
 968
 969                                                         AC_MEMCPY( &ml->sml_values[ i ], &ml->sml_values[ i + 1 ],
 970                                                                 sizeof( struct berval ) * ( j - i ) );
 971                                                         if ( ml->sml_nvalues != ml->sml_values ) {
 972                                                                 AC_MEMCPY( &ml->sml_nvalues[ i ], &ml->sml_nvalues[ i + 1 ],
 973                                                                         sizeof( struct berval ) * ( j - i ) );
 974                                                         }
 975                                                         i--;
 976                                                 }
 977
 978                                                 continue;
 979                                         }
 980
 981                                         /* access is checked with the original identity */
 982                                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 983                                         rc = access_allowed( op, e, mo->mo_ad_member,
 984                                                         &op->o_req_ndn,
 985                                                         ACL_WDEL, NULL );
 986                                         be_entry_release_r( op, e );
 987                                         op->o_bd->bd_info = (BackendInfo *)on;
 988
 989                                         if ( !rc ) {
 990                                                 rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 991                                                 rs->sr_text = "insufficient access to object referenced by memberof";
 992                                                 send_ldap_result( op, rs );
 993                                                 goto done;
 994                                         }
 995                                 }
 996
 997                                 if ( BER_BVISNULL( &ml->sml_nvalues[ 0 ] ) ) {
 998                                         *mmlp = ml->sml_next;
 999                                         slap_mod_free( &ml->sml_mod, 0 );
1000                                         free( ml );
1001                                 }
1002
1003                                 break;
1004                         }
1005                         /* fall thru */
1006
1007                 case LDAP_MOD_REPLACE:
1008
1009                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
1010                         /* access is checked with the original identity */
1011                         rc = access_allowed( op, target,
1012                                         mo->mo_ad_memberof,
1013                                         NULL,
1014                                         ACL_WDEL, NULL );
1015                         op->o_bd->bd_info = (BackendInfo *)on;
1016                         if ( rc == 0 ) {
1017                                 rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1018                                 rs->sr_text = NULL;
1019                                 send_ldap_result( op, rs );
1020                                 goto done2;
1021                         }
1022
1023                         if ( ml->sml_op == LDAP_MOD_DELETE || !ml->sml_values ) {
1024                                 break;
1025                         }
1026                         /* fall thru */
1027
1028                 case LDAP_MOD_ADD: {
1029                         AccessControlState      acl_state = ACL_STATE_INIT;
1030
1031                         for ( i = 0; !BER_BVISNULL( &ml->sml_nvalues[ i ] ); i++ ) {
1032                                 Entry           *e;
1033
1034                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1035                                 /* access is checked with the original identity */
1036                                 rc = access_allowed( op, target,
1037                                                 mo->mo_ad_memberof,
1038                                                 &ml->sml_nvalues[ i ],
1039                                                 ACL_WADD,
1040                                                 &acl_state );
1041                                 if ( rc == 0 ) {
1042                                         rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1043                                         rs->sr_text = NULL;
1044                                         send_ldap_result( op, rs );
1045                                         goto done2;
1046                                 }
1047
1048                                 /* ITS#6670 Ignore member pointing to this entry */
1049                                 if ( dn_match( &ml->sml_nvalues[i], &save_ndn ))
1050                                         continue;
1051
1052                                 rc = be_entry_get_rw( op, &ml->sml_nvalues[ i ],
1053                                                 NULL, NULL, 0, &e );
1054                                 op->o_bd->bd_info = (BackendInfo *)on;
1055                                 if ( rc != LDAP_SUCCESS ) {
1056                                         if ( MEMBEROF_DANGLING_ERROR( mo ) ) {
1057                                                 rc = rs->sr_err = mo->mo_dangling_err;
1058                                                 rs->sr_text = "adding non-existing object "
1059                                                         "as memberof";
1060                                                 send_ldap_result( op, rs );
1061                                                 goto done2;
1062                                         }
1063
1064                                         if ( MEMBEROF_DANGLING_DROP( mo ) ) {
1065                                                 int     j;
1066
1067                                                 Debug( LDAP_DEBUG_ANY, "%s: memberof_op_modify(\"%s\"): "
1068                                                         "memberof=\"%s\" does not exist (stripping...)\n",
1069                                                         op->o_log_prefix, op->o_req_ndn.bv_val,
1070                                                         ml->sml_nvalues[ i ].bv_val );
1071
1072                                                 for ( j = i + 1; !BER_BVISNULL( &ml->sml_nvalues[ j ] ); j++ );
1073                                                 ber_memfree( ml->sml_values[ i ].bv_val );
1074                                                 BER_BVZERO( &ml->sml_values[ i ] );
1075                                                 if ( ml->sml_nvalues != ml->sml_values ) {
1076                                                         ber_memfree( ml->sml_nvalues[ i ].bv_val );
1077                                                         BER_BVZERO( &ml->sml_nvalues[ i ] );
1078                                                 }
1079                                                 ml->sml_numvals--;
1080                                                 if ( j - i == 1 ) {
1081                                                         break;
1082                                                 }
1083
1084                                                 AC_MEMCPY( &ml->sml_values[ i ], &ml->sml_values[ i + 1 ],
1085                                                         sizeof( struct berval ) * ( j - i ) );
1086                                                 if ( ml->sml_nvalues != ml->sml_values ) {
1087                                                         AC_MEMCPY( &ml->sml_nvalues[ i ], &ml->sml_nvalues[ i + 1 ],
1088                                                                 sizeof( struct berval ) * ( j - i ) );
1089                                                 }
1090                                                 i--;
1091                                         }
1092
1093                                         continue;
1094                                 }
1095
1096                                 /* access is checked with the original identity */
1097                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1098                                 rc = access_allowed( op, e, mo->mo_ad_member,
1099                                                 &op->o_req_ndn,
1100                                                 ACL_WDEL, NULL );
1101                                 be_entry_release_r( op, e );
1102                                 op->o_bd->bd_info = (BackendInfo *)on;
1103
1104                                 if ( !rc ) {
1105                                         rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1106                                         rs->sr_text = "insufficient access to object referenced by memberof";
1107                                         send_ldap_result( op, rs );
1108                                         goto done;
1109                                 }
1110                         }
1111
1112                         if ( BER_BVISNULL( &ml->sml_nvalues[ 0 ] ) ) {
1113                                 *mmlp = ml->sml_next;
1114                                 slap_mod_free( &ml->sml_mod, 0 );
1115                                 free( ml );
1116                         }
1117
1118                         } break;
1119
1120                 default:
1121                         assert( 0 );
1122                 }
1123
1124 done2:;
1125                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1126                 be_entry_release_r( op, target );
1127                 op->o_bd->bd_info = (BackendInfo *)on;
1128         }
1129
1130         sc = op->o_tmpalloc( sizeof(slap_callback)+sizeof(*mci), op->o_tmpmemctx );
1131         sc->sc_private = sc+1;
1132         sc->sc_response = memberof_res_modify;
1133         sc->sc_cleanup = memberof_cleanup;
1134         mci = sc->sc_private;
1135         mci->on = on;
1136         mci->member = NULL;
1137         mci->memberof = NULL;
1138         mci->what = mcis.what;
1139
1140         if ( save_member ) {
1141                 op->o_dn = op->o_bd->be_rootdn;
1142                 op->o_ndn = op->o_bd->be_rootndn;
1143                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1144                 rc = backend_attribute( op, NULL, &op->o_req_ndn,
1145                                 mo->mo_ad_member, &mci->member, ACL_READ );
1146                 op->o_bd->bd_info = (BackendInfo *)on;
1147         }
1148
1149         sc->sc_next = op->o_callback;
1150         op->o_callback = sc;
1151
1152         rc = SLAP_CB_CONTINUE;
1153
1154 done:;
1155         op->o_dn = save_dn;
1156         op->o_ndn = save_ndn;
1157         op->o_bd->bd_info = (BackendInfo *)on;
1158
1159         return rc;
1160 }
1161
1162 static int
1163 memberof_op_modrdn( Operation *op, SlapReply *rs )
1164 {
1165         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
1166         slap_callback *sc;
1167         memberof_cbinfo_t *mci;
1168
1169         sc = op->o_tmpalloc( sizeof(slap_callback)+sizeof(*mci), op->o_tmpmemctx );
1170         sc->sc_private = sc+1;
1171         sc->sc_response = memberof_res_modrdn;
1172         sc->sc_cleanup = memberof_cleanup;
1173         mci = sc->sc_private;
1174         mci->on = on;
1175         mci->member = NULL;
1176         mci->memberof = NULL;
1177
1178         sc->sc_next = op->o_callback;
1179         op->o_callback = sc;
1180
1181         return SLAP_CB_CONTINUE;
1182 }
1183
1184 /*
1185  * response callback that adds memberof values when a group is added.
1186  */
1187 static int
1188 memberof_res_add( Operation *op, SlapReply *rs )
1189 {
1190         memberof_cbinfo_t *mci = op->o_callback->sc_private;
1191         slap_overinst   *on = mci->on;
1192         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1193
1194         int             i;
1195
1196         if ( rs->sr_err != LDAP_SUCCESS ) {
1197                 return SLAP_CB_CONTINUE;
1198         }
1199
1200         if ( MEMBEROF_REVERSE( mo ) ) {
1201                 Attribute       *ma;
1202
1203                 ma = attr_find( op->ora_e->e_attrs, mo->mo_ad_memberof );
1204                 if ( ma != NULL ) {
1205                         /* relax is required to allow to add
1206                          * a non-existing member */
1207                         op->o_relax = SLAP_CONTROL_CRITICAL;
1208
1209                         for ( i = 0; !BER_BVISNULL( &ma->a_nvals[ i ] ); i++ ) {
1210
1211                                 /* ITS#6670 Ignore member pointing to this entry */
1212                                 if ( dn_match( &ma->a_nvals[i], &op->o_req_ndn ))
1213                                         continue;
1214
1215                                 /* the modification is attempted
1216                                  * with the original identity */
1217                                 memberof_value_modify( op,
1218                                         &ma->a_nvals[ i ], mo->mo_ad_member,
1219                                         NULL, NULL, &op->o_req_dn, &op->o_req_ndn );
1220                         }
1221                 }
1222         }
1223
1224         if ( is_entry_objectclass_or_sub( op->ora_e, mo->mo_oc_group ) ) {
1225                 Attribute       *a;
1226
1227                 for ( a = attrs_find( op->ora_e->e_attrs, mo->mo_ad_member );
1228                                 a != NULL;
1229                                 a = attrs_find( a->a_next, mo->mo_ad_member ) )
1230                 {
1231                         for ( i = 0; !BER_BVISNULL( &a->a_nvals[ i ] ); i++ ) {
1232                                 /* ITS#6670 Ignore member pointing to this entry */
1233                                 if ( dn_match( &a->a_nvals[i], &op->o_req_ndn ))
1234                                         continue;
1235
1236                                 memberof_value_modify( op,
1237                                                 &a->a_nvals[ i ],
1238                                                 mo->mo_ad_memberof,
1239                                                 NULL, NULL,
1240                                                 &op->o_req_dn,
1241                                                 &op->o_req_ndn );
1242                         }
1243                 }
1244         }
1245
1246         return SLAP_CB_CONTINUE;
1247 }
1248
1249 /*
1250  * response callback that deletes memberof values when a group is deleted.
1251  */
1252 static int
1253 memberof_res_delete( Operation *op, SlapReply *rs )
1254 {
1255         memberof_cbinfo_t *mci = op->o_callback->sc_private;
1256         slap_overinst   *on = mci->on;
1257         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1258
1259         BerVarray       vals;
1260         int             i;
1261
1262         if ( rs->sr_err != LDAP_SUCCESS ) {
1263                 return SLAP_CB_CONTINUE;
1264         }
1265
1266         vals = mci->member;
1267         if ( vals != NULL ) {
1268                 for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1269                         memberof_value_modify( op,
1270                                         &vals[ i ], mo->mo_ad_memberof,
1271                                         &op->o_req_dn, &op->o_req_ndn,
1272                                         NULL, NULL );
1273                 }
1274         }
1275
1276         if ( MEMBEROF_REFINT( mo ) ) {
1277                 vals = mci->memberof;
1278                 if ( vals != NULL ) {
1279                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1280                                 memberof_value_modify( op,
1281                                                 &vals[ i ], mo->mo_ad_member,
1282                                                 &op->o_req_dn, &op->o_req_ndn,
1283                                                 NULL, NULL );
1284                         }
1285                 }
1286         }
1287
1288         return SLAP_CB_CONTINUE;
1289 }
1290
1291 /*
1292  * response callback that adds/deletes memberof values when a group
1293  * is modified.
1294  */
1295 static int
1296 memberof_res_modify( Operation *op, SlapReply *rs )
1297 {
1298         memberof_cbinfo_t *mci = op->o_callback->sc_private;
1299         slap_overinst   *on = mci->on;
1300         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1301
1302         int             i, rc;
1303         Modifications   *ml, *mml = NULL;
1304         BerVarray       vals;
1305
1306         if ( rs->sr_err != LDAP_SUCCESS ) {
1307                 return SLAP_CB_CONTINUE;
1308         }
1309
1310         if ( MEMBEROF_REVERSE( mo ) ) {
1311                 for ( ml = op->orm_modlist; ml; ml = ml->sml_next ) {
1312                         if ( ml->sml_desc == mo->mo_ad_memberof ) {
1313                                 mml = ml;
1314                                 break;
1315                         }
1316                 }
1317         }
1318
1319         if ( mml != NULL ) {
1320                 BerVarray       vals = mml->sml_nvalues;
1321
1322                 switch ( mml->sml_op ) {
1323                 case LDAP_MOD_DELETE:
1324                         if ( vals != NULL ) {
1325                                 for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1326                                         memberof_value_modify( op,
1327                                                         &vals[ i ], mo->mo_ad_member,
1328                                                         &op->o_req_dn, &op->o_req_ndn,
1329                                                         NULL, NULL );
1330                                 }
1331                                 break;
1332                         }
1333                         /* fall thru */
1334
1335                 case LDAP_MOD_REPLACE:
1336                         /* delete all ... */
1337                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
1338                         rc = backend_attribute( op, NULL, &op->o_req_ndn,
1339                                         mo->mo_ad_memberof, &vals, ACL_READ );
1340                         op->o_bd->bd_info = (BackendInfo *)on;
1341                         if ( rc == LDAP_SUCCESS ) {
1342                                 for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1343                                         memberof_value_modify( op,
1344                                                         &vals[ i ], mo->mo_ad_member,
1345                                                         &op->o_req_dn, &op->o_req_ndn,
1346                                                         NULL, NULL );
1347                                 }
1348                                 ber_bvarray_free_x( vals, op->o_tmpmemctx );
1349                         }
1350
1351                         if ( ml->sml_op == LDAP_MOD_DELETE || !mml->sml_values ) {
1352                                 break;
1353                         }
1354                         /* fall thru */
1355
1356                 case LDAP_MOD_ADD:
1357                         assert( vals != NULL );
1358
1359                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1360                                 memberof_value_modify( op,
1361                                                 &vals[ i ], mo->mo_ad_member,
1362                                                 NULL, NULL,
1363                                                 &op->o_req_dn, &op->o_req_ndn );
1364                         }
1365                         break;
1366
1367                 default:
1368                         assert( 0 );
1369                 }
1370         }
1371
1372         if ( mci->what & MEMBEROF_IS_GROUP )
1373         {
1374                 for ( ml = op->orm_modlist; ml; ml = ml->sml_next ) {
1375                         if ( ml->sml_desc != mo->mo_ad_member ) {
1376                                 continue;
1377                         }
1378
1379                         switch ( ml->sml_op ) {
1380                         case LDAP_MOD_DELETE:
1381                                 vals = ml->sml_nvalues;
1382                                 if ( vals != NULL ) {
1383                                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1384                                                 memberof_value_modify( op,
1385                                                                 &vals[ i ], mo->mo_ad_memberof,
1386                                                                 &op->o_req_dn, &op->o_req_ndn,
1387                                                                 NULL, NULL );
1388                                         }
1389                                         break;
1390                                 }
1391                                 /* fall thru */
1392
1393                         case LDAP_MOD_REPLACE:
1394                                 vals = mci->member;
1395
1396                                 /* delete all ... */
1397                                 if ( vals != NULL ) {
1398                                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1399                                                 memberof_value_modify( op,
1400                                                                 &vals[ i ], mo->mo_ad_memberof,
1401                                                                 &op->o_req_dn, &op->o_req_ndn,
1402                                                                 NULL, NULL );
1403                                         }
1404                                 }
1405
1406                                 if ( ml->sml_op == LDAP_MOD_DELETE || !ml->sml_values ) {
1407                                         break;
1408                                 }
1409                                 /* fall thru */
1410
1411                         case LDAP_MOD_ADD:
1412                                 assert( ml->sml_nvalues != NULL );
1413                                 vals = ml->sml_nvalues;
1414                                 for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1415                                         memberof_value_modify( op,
1416                                                         &vals[ i ], mo->mo_ad_memberof,
1417                                                         NULL, NULL,
1418                                                         &op->o_req_dn, &op->o_req_ndn );
1419                                 }
1420                                 break;
1421
1422                         default:
1423                                 assert( 0 );
1424                         }
1425                 }
1426         }
1427
1428         return SLAP_CB_CONTINUE;
1429 }
1430
1431 /*
1432  * response callback that adds/deletes member values when a group member
1433  * is renamed.
1434  */
1435 static int
1436 memberof_res_modrdn( Operation *op, SlapReply *rs )
1437 {
1438         memberof_cbinfo_t *mci = op->o_callback->sc_private;
1439         slap_overinst   *on = mci->on;
1440         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1441
1442         struct berval   newPDN, newDN = BER_BVNULL, newPNDN, newNDN;
1443         int             i, rc;
1444         BerVarray       vals;
1445
1446         struct berval   save_dn, save_ndn;
1447
1448         if ( rs->sr_err != LDAP_SUCCESS ) {
1449                 return SLAP_CB_CONTINUE;
1450         }
1451
1452         mci->what = MEMBEROF_IS_GROUP;
1453         if ( MEMBEROF_REFINT( mo ) ) {
1454                 mci->what |= MEMBEROF_IS_MEMBER;
1455         }
1456
1457         if ( op->orr_nnewSup ) {
1458                 newPNDN = *op->orr_nnewSup;
1459
1460         } else {
1461                 dnParent( &op->o_req_ndn, &newPNDN );
1462         }
1463
1464         build_new_dn( &newNDN, &newPNDN, &op->orr_nnewrdn, op->o_tmpmemctx );
1465
1466         save_dn = op->o_req_dn;
1467         save_ndn = op->o_req_ndn;
1468
1469         op->o_req_dn = newNDN;
1470         op->o_req_ndn = newNDN;
1471         rc = memberof_isGroupOrMember( op, mci );
1472         op->o_req_dn = save_dn;
1473         op->o_req_ndn = save_ndn;
1474
1475         if ( rc != LDAP_SUCCESS || mci->what == MEMBEROF_IS_NONE ) {
1476                 goto done;
1477         }
1478
1479         if ( op->orr_newSup ) {
1480                 newPDN = *op->orr_newSup;
1481
1482         } else {
1483                 dnParent( &op->o_req_dn, &newPDN );
1484         }
1485
1486         build_new_dn( &newDN, &newPDN, &op->orr_newrdn, op->o_tmpmemctx );
1487
1488         if ( mci->what & MEMBEROF_IS_GROUP ) {
1489                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1490                 rc = backend_attribute( op, NULL, &newNDN,
1491                                 mo->mo_ad_member, &vals, ACL_READ );
1492                 op->o_bd->bd_info = (BackendInfo *)on;
1493
1494                 if ( rc == LDAP_SUCCESS ) {
1495                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1496                                 memberof_value_modify( op,
1497                                                 &vals[ i ], mo->mo_ad_memberof,
1498                                                 &op->o_req_dn, &op->o_req_ndn,
1499                                                 &newDN, &newNDN );
1500                         }
1501                         ber_bvarray_free_x( vals, op->o_tmpmemctx );
1502                 }
1503         }
1504
1505         if ( MEMBEROF_REFINT( mo ) && ( mci->what & MEMBEROF_IS_MEMBER ) ) {
1506                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1507                 rc = backend_attribute( op, NULL, &newNDN,
1508                                 mo->mo_ad_memberof, &vals, ACL_READ );
1509                 op->o_bd->bd_info = (BackendInfo *)on;
1510
1511                 if ( rc == LDAP_SUCCESS ) {
1512                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1513                                 memberof_value_modify( op,
1514                                                 &vals[ i ], mo->mo_ad_member,
1515                                                 &op->o_req_dn, &op->o_req_ndn,
1516                                                 &newDN, &newNDN );
1517                         }
1518                         ber_bvarray_free_x( vals, op->o_tmpmemctx );
1519                 }
1520         }
1521
1522 done:;
1523         if ( !BER_BVISNULL( &newDN ) ) {
1524                 op->o_tmpfree( newDN.bv_val, op->o_tmpmemctx );
1525         }
1526         op->o_tmpfree( newNDN.bv_val, op->o_tmpmemctx );
1527
1528         return SLAP_CB_CONTINUE;
1529 }
1530
1531
1532 static int
1533 memberof_db_init(
1534         BackendDB       *be,
1535         ConfigReply     *cr )
1536 {
1537         slap_overinst   *on = (slap_overinst *)be->bd_info;
1538         memberof_t              *mo;
1539
1540         mo = (memberof_t *)ch_calloc( 1, sizeof( memberof_t ) );
1541
1542         /* safe default */
1543         mo->mo_dangling_err = LDAP_CONSTRAINT_VIOLATION;
1544
1545         on->on_bi.bi_private = (void *)mo;
1546
1547         return 0;
1548 }
1549
1550 enum {
1551         MO_DN = 1,
1552         MO_DANGLING,
1553         MO_REFINT,
1554         MO_GROUP_OC,
1555         MO_MEMBER_AD,
1556         MO_MEMBER_OF_AD,
1557 #if 0
1558         MO_REVERSE,
1559 #endif
1560
1561         MO_DANGLING_ERROR,
1562
1563         MO_LAST
1564 };
1565
1566 static ConfigDriver mo_cf_gen;
1567
1568 #define OID             "1.3.6.1.4.1.7136.2.666.4"
1569 #define OIDAT           OID ".1.1"
1570 #define OIDCFGAT        OID ".1.2"
1571 #define OIDOC           OID ".2.1"
1572 #define OIDCFGOC        OID ".2.2"
1573
1574
1575 static ConfigTable mo_cfg[] = {
1576         { "memberof-dn", "modifiersName",
1577                 2, 2, 0, ARG_MAGIC|ARG_DN|MO_DN, mo_cf_gen,
1578                 "( OLcfgOvAt:18.0 NAME 'olcMemberOfDN' "
1579                         "DESC 'DN to be used as modifiersName' "
1580                         "SYNTAX OMsDN SINGLE-VALUE )",
1581                 NULL, NULL },
1582
1583         { "memberof-dangling", "ignore|drop|error",
1584                 2, 2, 0, ARG_MAGIC|MO_DANGLING, mo_cf_gen,
1585                 "( OLcfgOvAt:18.1 NAME 'olcMemberOfDangling' "
1586                         "DESC 'Behavior with respect to dangling members, "
1587                                 "constrained to ignore, drop, error' "
1588                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",
1589                 NULL, NULL },
1590
1591         { "memberof-refint", "true|FALSE",
1592                 2, 2, 0, ARG_MAGIC|ARG_ON_OFF|MO_REFINT, mo_cf_gen,
1593                 "( OLcfgOvAt:18.2 NAME 'olcMemberOfRefInt' "
1594                         "DESC 'Take care of referential integrity' "
1595                         "SYNTAX OMsBoolean SINGLE-VALUE )",
1596                 NULL, NULL },
1597
1598         { "memberof-group-oc", "objectClass",
1599                 2, 2, 0, ARG_MAGIC|MO_GROUP_OC, mo_cf_gen,
1600                 "( OLcfgOvAt:18.3 NAME 'olcMemberOfGroupOC' "
1601                         "DESC 'Group objectClass' "
1602                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",
1603                 NULL, NULL },
1604
1605         { "memberof-member-ad", "member attribute",
1606                 2, 2, 0, ARG_MAGIC|MO_MEMBER_AD, mo_cf_gen,
1607                 "( OLcfgOvAt:18.4 NAME 'olcMemberOfMemberAD' "
1608                         "DESC 'member attribute' "
1609                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",
1610                 NULL, NULL },
1611
1612         { "memberof-memberof-ad", "memberOf attribute",
1613                 2, 2, 0, ARG_MAGIC|MO_MEMBER_OF_AD, mo_cf_gen,
1614                 "( OLcfgOvAt:18.5 NAME 'olcMemberOfMemberOfAD' "
1615                         "DESC 'memberOf attribute' "
1616                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",
1617                 NULL, NULL },
1618
1619 #if 0
1620         { "memberof-reverse", "true|FALSE",
1621                 2, 2, 0, ARG_MAGIC|ARG_ON_OFF|MO_REVERSE, mo_cf_gen,
1622                 "( OLcfgOvAt:18.6 NAME 'olcMemberOfReverse' "
1623                         "DESC 'Take care of referential integrity "
1624                                 "also when directly modifying memberOf' "
1625                         "SYNTAX OMsBoolean SINGLE-VALUE )",
1626                 NULL, NULL },
1627 #endif
1628
1629         { "memberof-dangling-error", "error code",
1630                 2, 2, 0, ARG_MAGIC|MO_DANGLING_ERROR, mo_cf_gen,
1631                 "( OLcfgOvAt:18.7 NAME 'olcMemberOfDanglingError' "
1632                         "DESC 'Error code returned in case of dangling back reference' "
1633                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",
1634                 NULL, NULL },
1635
1636         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
1637 };
1638
1639 static ConfigOCs mo_ocs[] = {
1640         { "( OLcfgOvOc:18.1 "
1641                 "NAME 'olcMemberOf' "
1642                 "DESC 'Member-of configuration' "
1643                 "SUP olcOverlayConfig "
1644                 "MAY ( "
1645                         "olcMemberOfDN "
1646                         "$ olcMemberOfDangling "
1647                         "$ olcMemberOfDanglingError"
1648                         "$ olcMemberOfRefInt "
1649                         "$ olcMemberOfGroupOC "
1650                         "$ olcMemberOfMemberAD "
1651                         "$ olcMemberOfMemberOfAD "
1652 #if 0
1653                         "$ olcMemberOfReverse "
1654 #endif
1655                         ") "
1656                 ")",
1657                 Cft_Overlay, mo_cfg, NULL, NULL },
1658         { NULL, 0, NULL }
1659 };
1660
1661 static slap_verbmasks dangling_mode[] = {
1662         { BER_BVC( "ignore" ),          MEMBEROF_NONE },
1663         { BER_BVC( "drop" ),            MEMBEROF_FDANGLING_DROP },
1664         { BER_BVC( "error" ),           MEMBEROF_FDANGLING_ERROR },
1665         { BER_BVNULL,                   0 }
1666 };
1667
1668 static int
1669 memberof_make_group_filter( memberof_t *mo )
1670 {
1671         char            *ptr;
1672
1673         if ( !BER_BVISNULL( &mo->mo_groupFilterstr ) ) {
1674                 ch_free( mo->mo_groupFilterstr.bv_val );
1675         }
1676
1677         mo->mo_groupFilter.f_choice = LDAP_FILTER_EQUALITY;
1678         mo->mo_groupFilter.f_ava = &mo->mo_groupAVA;
1679
1680         mo->mo_groupFilter.f_av_desc = slap_schema.si_ad_objectClass;
1681         mo->mo_groupFilter.f_av_value = mo->mo_oc_group->soc_cname;
1682
1683         mo->mo_groupFilterstr.bv_len = STRLENOF( "(=)" )
1684                 + slap_schema.si_ad_objectClass->ad_cname.bv_len
1685                 + mo->mo_oc_group->soc_cname.bv_len;
1686         ptr = mo->mo_groupFilterstr.bv_val = ch_malloc( mo->mo_groupFilterstr.bv_len + 1 );
1687         *ptr++ = '(';
1688         ptr = lutil_strcopy( ptr, slap_schema.si_ad_objectClass->ad_cname.bv_val );
1689         *ptr++ = '=';
1690         ptr = lutil_strcopy( ptr, mo->mo_oc_group->soc_cname.bv_val );
1691         *ptr++ = ')';
1692         *ptr = '\0';
1693
1694         return 0;
1695 }
1696
1697 static int
1698 memberof_make_member_filter( memberof_t *mo )
1699 {
1700         char            *ptr;
1701
1702         if ( !BER_BVISNULL( &mo->mo_memberFilterstr ) ) {
1703                 ch_free( mo->mo_memberFilterstr.bv_val );
1704         }
1705
1706         mo->mo_memberFilter.f_choice = LDAP_FILTER_PRESENT;
1707         mo->mo_memberFilter.f_desc = mo->mo_ad_memberof;
1708
1709         mo->mo_memberFilterstr.bv_len = STRLENOF( "(=*)" )
1710                 + mo->mo_ad_memberof->ad_cname.bv_len;
1711         ptr = mo->mo_memberFilterstr.bv_val = ch_malloc( mo->mo_memberFilterstr.bv_len + 1 );
1712         *ptr++ = '(';
1713         ptr = lutil_strcopy( ptr, mo->mo_ad_memberof->ad_cname.bv_val );
1714         ptr = lutil_strcopy( ptr, "=*)" );
1715
1716         return 0;
1717 }
1718
1719 static int
1720 mo_cf_gen( ConfigArgs *c )
1721 {
1722         slap_overinst   *on = (slap_overinst *)c->bi;
1723         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1724
1725         int             i, rc = 0;
1726
1727         if ( c->op == SLAP_CONFIG_EMIT ) {
1728                 struct berval bv = BER_BVNULL;
1729
1730                 switch( c->type ) {
1731                 case MO_DN:
1732                         if ( mo->mo_dn.bv_val != NULL) {
1733                                 value_add_one( &c->rvalue_vals, &mo->mo_dn );
1734                                 value_add_one( &c->rvalue_nvals, &mo->mo_ndn );
1735                         }
1736                         break;
1737
1738                 case MO_DANGLING:
1739                         enum_to_verb( dangling_mode, (mo->mo_flags & MEMBEROF_FDANGLING_MASK), &bv );
1740                         if ( BER_BVISNULL( &bv ) ) {
1741                                 /* there's something wrong... */
1742                                 assert( 0 );
1743                                 rc = 1;
1744
1745                         } else {
1746                                 value_add_one( &c->rvalue_vals, &bv );
1747                         }
1748                         break;
1749
1750                 case MO_DANGLING_ERROR:
1751                         if ( mo->mo_flags & MEMBEROF_FDANGLING_ERROR ) {
1752                                 char buf[ SLAP_TEXT_BUFLEN ];
1753                                 enum_to_verb( slap_ldap_response_code, mo->mo_dangling_err, &bv );
1754                                 if ( BER_BVISNULL( &bv ) ) {
1755                                         bv.bv_len = snprintf( buf, sizeof( buf ), "0x%x", mo->mo_dangling_err );
1756                                         if ( bv.bv_len < sizeof( buf ) ) {
1757                                                 bv.bv_val = buf;
1758                                         } else {
1759                                                 rc = 1;
1760                                                 break;
1761                                         }
1762                                 }
1763                                 value_add_one( &c->rvalue_vals, &bv );
1764                         } else {
1765                                 rc = 1;
1766                         }
1767                         break;
1768
1769                 case MO_REFINT:
1770                         c->value_int = MEMBEROF_REFINT( mo );
1771                         break;
1772
1773 #if 0
1774                 case MO_REVERSE:
1775                         c->value_int = MEMBEROF_REVERSE( mo );
1776                         break;
1777 #endif
1778
1779                 case MO_GROUP_OC:
1780                         if ( mo->mo_oc_group != NULL ){
1781                                 value_add_one( &c->rvalue_vals, &mo->mo_oc_group->soc_cname );
1782                         }
1783                         break;
1784
1785                 case MO_MEMBER_AD:
1786                         if ( mo->mo_ad_member != NULL ){
1787                                 value_add_one( &c->rvalue_vals, &mo->mo_ad_member->ad_cname );
1788                         }
1789                         break;
1790
1791                 case MO_MEMBER_OF_AD:
1792                         if ( mo->mo_ad_memberof != NULL ){
1793                                 value_add_one( &c->rvalue_vals, &mo->mo_ad_memberof->ad_cname );
1794                         }
1795                         break;
1796
1797                 default:
1798                         assert( 0 );
1799                         return 1;
1800                 }
1801
1802                 return rc;
1803
1804         } else if ( c->op == LDAP_MOD_DELETE ) {
1805                 return 1;       /* FIXME */
1806
1807         } else {
1808                 switch( c->type ) {
1809                 case MO_DN:
1810                         if ( !BER_BVISNULL( &mo->mo_dn ) ) {
1811                                 ber_memfree( mo->mo_dn.bv_val );
1812                                 ber_memfree( mo->mo_ndn.bv_val );
1813                         }
1814                         mo->mo_dn = c->value_dn;
1815                         mo->mo_ndn = c->value_ndn;
1816                         break;
1817
1818                 case MO_DANGLING:
1819                         i = verb_to_mask( c->argv[ 1 ], dangling_mode );
1820                         if ( BER_BVISNULL( &dangling_mode[ i ].word ) ) {
1821                                 return 1;
1822                         }
1823
1824                         mo->mo_flags &= ~MEMBEROF_FDANGLING_MASK;
1825                         mo->mo_flags |= dangling_mode[ i ].mask;
1826                         break;
1827
1828                 case MO_DANGLING_ERROR:
1829                         i = verb_to_mask( c->argv[ 1 ], slap_ldap_response_code );
1830                         if ( !BER_BVISNULL( &slap_ldap_response_code[ i ].word ) ) {
1831                                 mo->mo_dangling_err = slap_ldap_response_code[ i ].mask;
1832                         } else if ( lutil_atoix( &mo->mo_dangling_err, c->argv[ 1 ], 0 ) ) {
1833                                 return 1;
1834                         }
1835                         break;
1836
1837                 case MO_REFINT:
1838                         if ( c->value_int ) {
1839                                 mo->mo_flags |= MEMBEROF_FREFINT;
1840
1841                         } else {
1842                                 mo->mo_flags &= ~MEMBEROF_FREFINT;
1843                         }
1844                         break;
1845
1846 #if 0
1847                 case MO_REVERSE:
1848                         if ( c->value_int ) {
1849                                 mo->mo_flags |= MEMBEROF_FREVERSE;
1850
1851                         } else {
1852                                 mo->mo_flags &= ~MEMBEROF_FREVERSE;
1853                         }
1854                         break;
1855 #endif
1856
1857                 case MO_GROUP_OC: {
1858                         ObjectClass     *oc = NULL;
1859
1860                         oc = oc_find( c->argv[ 1 ] );
1861                         if ( oc == NULL ) {
1862                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1863                                         "unable to find group objectClass=\"%s\"",
1864                                         c->argv[ 1 ] );
1865                                 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n",
1866                                         c->log, c->cr_msg, 0 );
1867                                 return 1;
1868                         }
1869
1870                         mo->mo_oc_group = oc;
1871                         memberof_make_group_filter( mo );
1872                         } break;
1873
1874                 case MO_MEMBER_AD: {
1875                         AttributeDescription    *ad = NULL;
1876                         const char              *text = NULL;
1877
1878
1879                         rc = slap_str2ad( c->argv[ 1 ], &ad, &text );
1880                         if ( rc != LDAP_SUCCESS ) {
1881                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1882                                         "unable to find member attribute=\"%s\": %s (%d)",
1883                                         c->argv[ 1 ], text, rc );
1884                                 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n",
1885                                         c->log, c->cr_msg, 0 );
1886                                 return 1;
1887                         }
1888
1889                         if ( !is_at_syntax( ad->ad_type, SLAPD_DN_SYNTAX )              /* e.g. "member" */
1890                                 && !is_at_syntax( ad->ad_type, SLAPD_NAMEUID_SYNTAX ) ) /* e.g. "uniqueMember" */
1891                         {
1892                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1893                                         "member attribute=\"%s\" must either "
1894                                         "have DN (%s) or nameUID (%s) syntax",
1895                                         c->argv[ 1 ], SLAPD_DN_SYNTAX, SLAPD_NAMEUID_SYNTAX );
1896                                 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n",
1897                                         c->log, c->cr_msg, 0 );
1898                                 return 1;
1899                         }
1900
1901                         mo->mo_ad_member = ad;
1902                         } break;
1903
1904                 case MO_MEMBER_OF_AD: {
1905                         AttributeDescription    *ad = NULL;
1906                         const char              *text = NULL;
1907
1908
1909                         rc = slap_str2ad( c->argv[ 1 ], &ad, &text );
1910                         if ( rc != LDAP_SUCCESS ) {
1911                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1912                                         "unable to find memberof attribute=\"%s\": %s (%d)",
1913                                         c->argv[ 1 ], text, rc );
1914                                 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n",
1915                                         c->log, c->cr_msg, 0 );
1916                                 return 1;
1917                         }
1918
1919                         if ( !is_at_syntax( ad->ad_type, SLAPD_DN_SYNTAX )              /* e.g. "member" */
1920                                 && !is_at_syntax( ad->ad_type, SLAPD_NAMEUID_SYNTAX ) ) /* e.g. "uniqueMember" */
1921                         {
1922                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1923                                         "memberof attribute=\"%s\" must either "
1924                                         "have DN (%s) or nameUID (%s) syntax",
1925                                         c->argv[ 1 ], SLAPD_DN_SYNTAX, SLAPD_NAMEUID_SYNTAX );
1926                                 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n",
1927                                         c->log, c->cr_msg, 0 );
1928                                 return 1;
1929                         }
1930
1931                         mo->mo_ad_memberof = ad;
1932                         memberof_make_member_filter( mo );
1933                         } break;
1934
1935                 default:
1936                         assert( 0 );
1937                         return 1;
1938                 }
1939         }
1940
1941         return 0;
1942 }
1943
1944 static int
1945 memberof_db_open(
1946         BackendDB       *be,
1947         ConfigReply     *cr )
1948 {
1949         slap_overinst   *on = (slap_overinst *)be->bd_info;
1950         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1951
1952         int             rc;
1953         const char      *text = NULL;
1954
1955         if( ! mo->mo_ad_memberof ){
1956                 rc = slap_str2ad( SLAPD_MEMBEROF_ATTR, &mo->mo_ad_memberof, &text );
1957                 if ( rc != LDAP_SUCCESS ) {
1958                         Debug( LDAP_DEBUG_ANY, "memberof_db_open: "
1959                                         "unable to find attribute=\"%s\": %s (%d)\n",
1960                                         SLAPD_MEMBEROF_ATTR, text, rc );
1961                         return rc;
1962                 }
1963         }
1964
1965         if( ! mo->mo_ad_member ){
1966                 rc = slap_str2ad( SLAPD_GROUP_ATTR, &mo->mo_ad_member, &text );
1967                 if ( rc != LDAP_SUCCESS ) {
1968                         Debug( LDAP_DEBUG_ANY, "memberof_db_open: "
1969                                         "unable to find attribute=\"%s\": %s (%d)\n",
1970                                         SLAPD_GROUP_ATTR, text, rc );
1971                         return rc;
1972                 }
1973         }
1974
1975         if( ! mo->mo_oc_group ){
1976                 mo->mo_oc_group = oc_find( SLAPD_GROUP_CLASS );
1977                 if ( mo->mo_oc_group == NULL ) {
1978                         Debug( LDAP_DEBUG_ANY,
1979                                         "memberof_db_open: "
1980                                         "unable to find objectClass=\"%s\"\n",
1981                                         SLAPD_GROUP_CLASS, 0, 0 );
1982                         return 1;
1983                 }
1984         }
1985
1986         if ( BER_BVISNULL( &mo->mo_dn ) && !BER_BVISNULL( &be->be_rootdn ) ) {
1987                 ber_dupbv( &mo->mo_dn, &be->be_rootdn );
1988                 ber_dupbv( &mo->mo_ndn, &be->be_rootndn );
1989         }
1990
1991         if ( BER_BVISNULL( &mo->mo_groupFilterstr ) ) {
1992                 memberof_make_group_filter( mo );
1993         }
1994
1995         if ( BER_BVISNULL( &mo->mo_memberFilterstr ) ) {
1996                 memberof_make_member_filter( mo );
1997         }
1998
1999         return 0;
2000 }
2001
2002 static int
2003 memberof_db_destroy(
2004         BackendDB       *be,
2005         ConfigReply     *cr )
2006 {
2007         slap_overinst   *on = (slap_overinst *)be->bd_info;
2008         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
2009
2010         if ( mo ) {
2011                 if ( !BER_BVISNULL( &mo->mo_dn ) ) {
2012                         ber_memfree( mo->mo_dn.bv_val );
2013                         ber_memfree( mo->mo_ndn.bv_val );
2014                 }
2015
2016                 if ( !BER_BVISNULL( &mo->mo_groupFilterstr ) ) {
2017                         ber_memfree( mo->mo_groupFilterstr.bv_val );
2018                 }
2019
2020                 if ( !BER_BVISNULL( &mo->mo_memberFilterstr ) ) {
2021                         ber_memfree( mo->mo_memberFilterstr.bv_val );
2022                 }
2023
2024                 ber_memfree( mo );
2025         }
2026
2027         return 0;
2028 }
2029
2030 /* unused */
2031 static AttributeDescription     *ad_memberOf;
2032
2033 static struct {
2034         char    *desc;
2035         AttributeDescription **adp;
2036 } as[] = {
2037         { "( 1.2.840.113556.1.2.102 "
2038                 "NAME 'memberOf' "
2039                 "DESC 'Group that the entry belongs to' "
2040                 "SYNTAX '1.3.6.1.4.1.1466.115.121.1.12' "
2041                 "EQUALITY distinguishedNameMatch "      /* added */
2042                 "USAGE dSAOperation "                   /* added; questioned */
2043                 /* "NO-USER-MODIFICATION " */           /* add? */
2044                 "X-ORIGIN 'iPlanet Delegated Administrator' )",
2045                 &ad_memberOf },
2046         { NULL }
2047 };
2048
2049 #if SLAPD_OVER_MEMBEROF == SLAPD_MOD_DYNAMIC
2050 static
2051 #endif /* SLAPD_OVER_MEMBEROF == SLAPD_MOD_DYNAMIC */
2052 int
2053 memberof_initialize( void )
2054 {
2055         int                     code, i;
2056
2057         for ( i = 0; as[ i ].desc != NULL; i++ ) {
2058                 code = register_at( as[ i ].desc, as[ i ].adp, 0 );
2059                 if ( code ) {
2060                         Debug( LDAP_DEBUG_ANY,
2061                                 "memberof_initialize: register_at #%d failed\n",
2062                                 i, 0, 0 );
2063                         return code;
2064                 }
2065         }
2066
2067         memberof.on_bi.bi_type = "memberof";
2068
2069         memberof.on_bi.bi_db_init = memberof_db_init;
2070         memberof.on_bi.bi_db_open = memberof_db_open;
2071         memberof.on_bi.bi_db_destroy = memberof_db_destroy;
2072
2073         memberof.on_bi.bi_op_add = memberof_op_add;
2074         memberof.on_bi.bi_op_delete = memberof_op_delete;
2075         memberof.on_bi.bi_op_modify = memberof_op_modify;
2076         memberof.on_bi.bi_op_modrdn = memberof_op_modrdn;
2077
2078         memberof.on_bi.bi_cf_ocs = mo_ocs;
2079
2080         code = config_register_schema( mo_cfg, mo_ocs );
2081         if ( code ) return code;
2082
2083         return overlay_register( &memberof );
2084 }
2085
2086 #if SLAPD_OVER_MEMBEROF == SLAPD_MOD_DYNAMIC
2087 int
2088 init_module( int argc, char *argv[] )
2089 {
2090         return memberof_initialize();
2091 }
2092 #endif /* SLAPD_OVER_MEMBEROF == SLAPD_MOD_DYNAMIC */
2093
2094 #endif /* SLAPD_OVER_MEMBEROF */