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