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

   1 /* memberof.c - back-reference for group membership */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2005-2007 Pierangelo Masarati <ando@sys-net.it>
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* ACKNOWLEDGMENTS:
  17  * This work was initially developed by Pierangelo Masarati for inclusion
  18  * in OpenLDAP Software, sponsored by SysNet s.r.l.
  19  */
  20
  21 #include "portable.h"
  22
  23 #ifdef SLAPD_OVER_MEMBEROF
  24
  25 #include <stdio.h>
  26
  27 #include "ac/string.h"
  28 #include "ac/socket.h"
  29
  30 #include "slap.h"
  31 #include "config.h"
  32 #include "lutil.h"
  33
  34 /*
  35  *      Glossary:
  36  *
  37  *              GROUP           a group object (an entry with GROUP_OC
  38  *                              objectClass)
  39  *              MEMBER          a member object (an entry whose DN is
  40  *                              listed as MEMBER_AT value of a GROUP)
  41  *              GROUP_OC        the objectClass of the group object
  42  *                              (default: groupOfNames)
  43  *              MEMBER_AT       the membership attribute, DN-valued;
  44  *                              note: nameAndOptionalUID is tolerated
  45  *                              as soon as the optionalUID is absent
  46  *                              (default: member)
  47  *              MEMBER_OF       reverse membership attribute
  48  *                              (default: memberOf)
  49  *
  50  *      - add:
  51  *              - if the entry that is being added is a GROUP,
  52  *                the MEMBER_AT defined as values of the add operation
  53  *                get the MEMBER_OF value directly from the request.
  54  *
  55  *                if configured to do so, the MEMBER objects do not exist,
  56  *                and no relax control is issued, either:
  57  *                      - fail
  58  *                      - drop non-existing members
  59  *                (by default: don't muck with values)
  60  *
  61  *              - if (configured to do so,) the referenced GROUP exists,
  62  *                the relax control is set and the user has
  63  *                "manage" privileges, allow to add MEMBER_OF values to
  64  *                generic entries.
  65  *
  66  *      - modify:
  67  *              - if the entry being modified is a GROUP_OC and the
  68  *                MEMBER_AT attribute is modified, the MEMBER_OF value
  69  *                of the (existing) MEMBER_AT entries that are affected
  70  *                is modified according to the request:
  71  *                      - if a MEMBER is removed from the group,
  72  *                        delete the corresponding MEMBER_OF
  73  *                      - if a MEMBER is added to a group,
  74  *                        add the corresponding MEMBER_OF
  75  *
  76  *                We need to determine, from the database, if it is
  77  *                a GROUP_OC, and we need to check, from the
  78  *                modification list, if the MEMBER_AT attribute is being
  79  *                affected, and what MEMBER_AT values are affected.
  80  *
  81  *                if configured to do so, the entries corresponding to
  82  *                the MEMBER_AT values do not exist, and no relax control
  83  *                is issued, either:
  84  *                      - fail
  85  *                      - drop non-existing members
  86  *                (by default: don't muck with values)
  87  *
  88  *              - if configured to do so, the referenced GROUP exists,
  89  *                (the relax control is set) and the user has
  90  *                "manage" privileges, allow to add MEMBER_OF values to
  91  *                generic entries; the change is NOT automatically reflected
  92  *                in the MEMBER attribute of the GROUP referenced
  93  *                by the value of MEMBER_OF; a separate modification,
  94  *                with or without relax control, needs to be performed.
  95  *
  96  *      - modrdn:
  97  *              - if the entry being renamed is a GROUP, the MEMBER_OF
  98  *                value of the (existing) MEMBER objects is modified
  99  *                accordingly based on the newDN of the GROUP.
 100  *
 101  *                We need to determine, from the database, if it is
 102  *                a GROUP; the list of MEMBER objects is obtained from
 103  *                the database.
 104  *
 105  *                Non-existing MEMBER objects are ignored, since the
 106  *                MEMBER_AT is not being addressed by the operation.
 107  *
 108  *              - if the entry being renamed has the MEMBER_OF attribute,
 109  *                the corresponding MEMBER value must be modified in the
 110  *                respective group entries.
 111  *
 112  *
 113  *      - delete:
 114  *              - if the entry being deleted is a GROUP, the (existing)
 115  *                MEMBER objects are modified accordingly; a copy of the
 116  *                values of the MEMBER_AT is saved and, if the delete
 117  *                succeeds, the MEMBER_OF value of the (existing) MEMBER
 118  *                objects is deleted.
 119  *
 120  *                We need to determine, from the database, if it is
 121  *                a GROUP.
 122  *
 123  *                Non-existing MEMBER objects are ignored, since the entry
 124  *                is being deleted.
 125  *
 126  *              - if the entry being deleted has the MEMBER_OF attribute,
 127  *                the corresponding value of the MEMBER_AT must be deleted
 128  *                from the respective GROUP entries.
 129  */
 130
 131 #define SLAPD_MEMBEROF_ATTR     "memberOf"
 132
 133 static slap_overinst            memberof;
 134
 135 typedef struct memberof_t {
 136         struct berval           mo_dn;
 137         struct berval           mo_ndn;
 138
 139         ObjectClass             *mo_oc_group;
 140         AttributeDescription    *mo_ad_member;
 141         AttributeDescription    *mo_ad_memberof;
 142
 143         struct berval           mo_groupFilterstr;
 144         AttributeAssertion      mo_groupAVA;
 145         Filter                  mo_groupFilter;
 146
 147         struct berval           mo_memberFilterstr;
 148         Filter                  mo_memberFilter;
 149
 150         unsigned                mo_flags;
 151 #define MEMBEROF_NONE           0x00U
 152 #define MEMBEROF_FDANGLING_DROP 0x01U
 153 #define MEMBEROF_FDANGLING_ERROR        0x02U
 154 #define MEMBEROF_FDANGLING_MASK (MEMBEROF_FDANGLING_DROP|MEMBEROF_FDANGLING_ERROR)
 155 #define MEMBEROF_FREFINT        0x04U
 156 #define MEMBEROF_FREVERSE       0x08U
 157
 158         ber_int_t               mo_dangling_err;
 159
 160 #define MEMBEROF_CHK(mo,f) \
 161         (((mo)->mo_flags & (f)) == (f))
 162 #define MEMBEROF_DANGLING_CHECK(mo) \
 163         ((mo)->mo_flags & MEMBEROF_FDANGLING_MASK)
 164 #define MEMBEROF_DANGLING_DROP(mo) \
 165         MEMBEROF_CHK((mo),MEMBEROF_FDANGLING_DROP)
 166 #define MEMBEROF_DANGLING_ERROR(mo) \
 167         MEMBEROF_CHK((mo),MEMBEROF_FDANGLING_ERROR)
 168 #define MEMBEROF_REFINT(mo) \
 169         MEMBEROF_CHK((mo),MEMBEROF_FREFINT)
 170 #define MEMBEROF_REVERSE(mo) \
 171         MEMBEROF_CHK((mo),MEMBEROF_FREVERSE)
 172 } memberof_t;
 173
 174 typedef enum memberof_is_t {
 175         MEMBEROF_IS_NONE = 0x00,
 176         MEMBEROF_IS_GROUP = 0x01,
 177         MEMBEROF_IS_MEMBER = 0x02,
 178         MEMBEROF_IS_BOTH = (MEMBEROF_IS_GROUP|MEMBEROF_IS_MEMBER)
 179 } memberof_is_t;
 180
 181 typedef struct memberof_cookie_t {
 182         AttributeDescription    *ad;
 183         BerVarray               vals;
 184         int                     foundit;
 185 } memberof_cookie_t;
 186
 187 typedef struct memberof_cbinfo_t {
 188         slap_overinst *on;
 189         BerVarray member;
 190         BerVarray memberof;
 191         memberof_is_t what;
 192 } memberof_cbinfo_t;
 193
 194 static int
 195 memberof_isGroupOrMember_cb( Operation *op, SlapReply *rs )
 196 {
 197         if ( rs->sr_type == REP_SEARCH ) {
 198                 memberof_cookie_t       *mc;
 199
 200                 mc = (memberof_cookie_t *)op->o_callback->sc_private;
 201                 mc->foundit = 1;
 202         }
 203
 204         return 0;
 205 }
 206
 207 /*
 208  * callback for internal search that saves the member attribute values
 209  * of groups being deleted.
 210  */
 211 static int
 212 memberof_saveMember_cb( Operation *op, SlapReply *rs )
 213 {
 214         if ( rs->sr_type == REP_SEARCH ) {
 215                 memberof_cookie_t       *mc;
 216                 Attribute               *a;
 217
 218                 mc = (memberof_cookie_t *)op->o_callback->sc_private;
 219                 mc->foundit = 1;
 220
 221                 assert( rs->sr_entry != NULL );
 222                 assert( rs->sr_entry->e_attrs != NULL );
 223
 224                 a = attr_find( rs->sr_entry->e_attrs, mc->ad );
 225                 if ( a != NULL ) {
 226                         ber_bvarray_dup_x( &mc->vals, a->a_nvals, op->o_tmpmemctx );
 227
 228                         assert( attr_find( a->a_next, mc->ad ) == NULL );
 229                 }
 230         }
 231
 232         return 0;
 233 }
 234
 235 /*
 236  * the delete hook performs an internal search that saves the member
 237  * attribute values of groups being deleted.
 238  */
 239 static int
 240 memberof_isGroupOrMember( Operation *op, memberof_cbinfo_t *mci )
 241 {
 242         slap_overinst           *on = mci->on;
 243         memberof_t              *mo = (memberof_t *)on->on_bi.bi_private;
 244
 245         Operation               op2 = *op;
 246         slap_callback           cb = { 0 };
 247         BackendInfo     *bi = op->o_bd->bd_info;
 248         AttributeName           an[ 2 ];
 249
 250         memberof_is_t           iswhat = MEMBEROF_IS_NONE;
 251         memberof_cookie_t       mc;
 252
 253         assert( mci->what != MEMBEROF_IS_NONE );
 254
 255         cb.sc_private = &mc;
 256         if ( op->o_tag == LDAP_REQ_DELETE ) {
 257                 cb.sc_response = memberof_saveMember_cb;
 258
 259         } else {
 260                 cb.sc_response = memberof_isGroupOrMember_cb;
 261         }
 262
 263         op2.o_tag = LDAP_REQ_SEARCH;
 264         op2.o_callback = &cb;
 265         op2.o_dn = op->o_bd->be_rootdn;
 266         op2.o_ndn = op->o_bd->be_rootndn;
 267
 268         op2.ors_scope = LDAP_SCOPE_BASE;
 269         op2.ors_deref = LDAP_DEREF_NEVER;
 270         BER_BVZERO( &an[ 1 ].an_name );
 271         op2.ors_attrs = an;
 272         op2.ors_attrsonly = 0;
 273         op2.ors_limit = NULL;
 274         op2.ors_slimit = 1;
 275         op2.ors_tlimit = SLAP_NO_LIMIT;
 276
 277         if ( mci->what & MEMBEROF_IS_GROUP ) {
 278                 SlapReply       rs2 = { REP_RESULT };
 279
 280                 mc.ad = mo->mo_ad_member;
 281                 mc.foundit = 0;
 282                 mc.vals = NULL;
 283                 an[ 0 ].an_desc = mo->mo_ad_member;
 284                 an[ 0 ].an_name = an[ 0 ].an_desc->ad_cname;
 285                 op2.ors_filterstr = mo->mo_groupFilterstr;
 286                 op2.ors_filter = &mo->mo_groupFilter;
 287
 288                 op2.o_bd->bd_info = (BackendInfo *)on->on_info;
 289                 (void)op->o_bd->be_search( &op2, &rs2 );
 290                 op2.o_bd->bd_info = bi;
 291
 292                 if ( mc.foundit ) {
 293                         iswhat |= MEMBEROF_IS_GROUP;
 294                         if ( mc.vals ) mci->member = mc.vals;
 295
 296                 }
 297         }
 298
 299         if ( mci->what & MEMBEROF_IS_MEMBER ) {
 300                 SlapReply       rs2 = { REP_RESULT };
 301
 302                 mc.ad = mo->mo_ad_memberof;
 303                 mc.foundit = 0;
 304                 mc.vals = NULL;
 305                 an[ 0 ].an_desc = mo->mo_ad_memberof;
 306                 an[ 0 ].an_name = an[ 0 ].an_desc->ad_cname;
 307                 op2.ors_filterstr = mo->mo_memberFilterstr;
 308                 op2.ors_filter = &mo->mo_memberFilter;
 309
 310                 op2.o_bd->bd_info = (BackendInfo *)on->on_info;
 311                 (void)op->o_bd->be_search( &op2, &rs2 );
 312                 op2.o_bd->bd_info = bi;
 313
 314                 if ( mc.foundit ) {
 315                         iswhat |= MEMBEROF_IS_MEMBER;
 316                         if ( mc.vals ) mci->memberof = mc.vals;
 317
 318                 }
 319         }
 320
 321         mci->what = iswhat;
 322
 323         return LDAP_SUCCESS;
 324 }
 325
 326 /*
 327  * response callback that adds memberof values when a group is modified.
 328  */
 329 static void
 330 memberof_value_modify(
 331         Operation               *op,
 332         struct berval           *ndn,
 333         AttributeDescription    *ad,
 334         struct berval           *old_dn,
 335         struct berval           *old_ndn,
 336         struct berval           *new_dn,
 337         struct berval           *new_ndn )
 338 {
 339         memberof_cbinfo_t *mci = op->o_callback->sc_private;
 340         slap_overinst   *on = mci->on;
 341         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
 342
 343         Operation       op2 = *op;
 344         SlapReply       rs2 = { REP_RESULT };
 345         slap_callback   cb = { NULL, slap_null_cb, NULL, NULL };
 346         Modifications   mod[ 2 ] = { { { 0 } } }, *ml;
 347         struct berval   values[ 4 ], nvalues[ 4 ];
 348         int             mcnt = 0;
 349
 350         op2.o_tag = LDAP_REQ_MODIFY;
 351
 352         op2.o_req_dn = *ndn;
 353         op2.o_req_ndn = *ndn;
 354
 355         op2.o_callback = &cb;
 356         op2.o_dn = op->o_bd->be_rootdn;
 357         op2.o_ndn = op->o_bd->be_rootndn;
 358         op2.orm_modlist = NULL;
 359
 360         /* Internal ops, never replicate these */
 361         op2.orm_no_opattrs = 1;
 362         op2.o_dont_replicate = 1;
 363
 364         if ( !BER_BVISNULL( &mo->mo_ndn ) ) {
 365                 ml = &mod[ mcnt ];
 366                 ml->sml_numvals = 1;
 367                 ml->sml_values = &values[ 0 ];
 368                 ml->sml_values[ 0 ] = mo->mo_dn;
 369                 BER_BVZERO( &ml->sml_values[ 1 ] );
 370                 ml->sml_nvalues = &nvalues[ 0 ];
 371                 ml->sml_nvalues[ 0 ] = mo->mo_ndn;
 372                 BER_BVZERO( &ml->sml_nvalues[ 1 ] );
 373                 ml->sml_desc = slap_schema.si_ad_modifiersName;
 374                 ml->sml_type = ml->sml_desc->ad_cname;
 375                 ml->sml_op = LDAP_MOD_REPLACE;
 376                 ml->sml_flags = SLAP_MOD_INTERNAL;
 377                 ml->sml_next = op2.orm_modlist;
 378                 op2.orm_modlist = ml;
 379
 380                 mcnt++;
 381         }
 382
 383         ml = &mod[ mcnt ];
 384         ml->sml_numvals = 1;
 385         ml->sml_values = &values[ 2 ];
 386         BER_BVZERO( &ml->sml_values[ 1 ] );
 387         ml->sml_nvalues = &nvalues[ 2 ];
 388         BER_BVZERO( &ml->sml_nvalues[ 1 ] );
 389         ml->sml_desc = ad;
 390         ml->sml_type = ml->sml_desc->ad_cname;
 391         ml->sml_flags = SLAP_MOD_INTERNAL;
 392         ml->sml_next = op2.orm_modlist;
 393         op2.orm_modlist = ml;
 394
 395         if ( new_ndn != NULL ) {
 396                 BackendInfo *bi = op2.o_bd->bd_info;
 397                 OpExtra oex;
 398
 399                 assert( !BER_BVISNULL( new_dn ) );
 400                 assert( !BER_BVISNULL( new_ndn ) );
 401
 402                 ml = &mod[ mcnt ];
 403                 ml->sml_op = LDAP_MOD_ADD;
 404
 405                 ml->sml_values[ 0 ] = *new_dn;
 406                 ml->sml_nvalues[ 0 ] = *new_ndn;
 407
 408                 oex.oe_key = (void *)&memberof;
 409                 LDAP_SLIST_INSERT_HEAD(&op2.o_extra, &oex, oe_next);
 410                 op2.o_bd->bd_info = (BackendInfo *)on->on_info;
 411                 (void)op->o_bd->be_modify( &op2, &rs2 );
 412                 op2.o_bd->bd_info = bi;
 413                 LDAP_SLIST_REMOVE(&op2.o_extra, &oex, OpExtra, oe_next);
 414                 if ( rs2.sr_err != LDAP_SUCCESS ) {
 415                         char buf[ SLAP_TEXT_BUFLEN ];
 416                         snprintf( buf, sizeof( buf ),
 417                                 "memberof_value_modify DN=\"%s\" add %s=\"%s\" failed err=%d",
 418                                 op2.o_req_dn.bv_val, ad->ad_cname.bv_val, new_dn->bv_val, rs2.sr_err );
 419                         Debug( LDAP_DEBUG_ANY, "%s: %s\n",
 420                                 op->o_log_prefix, buf, 0 );
 421                 }
 422
 423                 assert( op2.orm_modlist == &mod[ mcnt ] );
 424                 assert( mcnt == 0 || op2.orm_modlist->sml_next == &mod[ 0 ] );
 425                 ml = op2.orm_modlist->sml_next;
 426                 if ( mcnt == 1 ) {
 427                         assert( ml == &mod[ 0 ] );
 428                         ml = ml->sml_next;
 429                 }
 430                 if ( ml != NULL ) {
 431                         slap_mods_free( ml, 1 );
 432                 }
 433
 434                 mod[ 0 ].sml_next = NULL;
 435         }
 436
 437         if ( old_ndn != NULL ) {
 438                 BackendInfo *bi = op2.o_bd->bd_info;
 439                 OpExtra oex;
 440
 441                 assert( !BER_BVISNULL( old_dn ) );
 442                 assert( !BER_BVISNULL( old_ndn ) );
 443
 444                 ml = &mod[ mcnt ];
 445                 ml->sml_op = LDAP_MOD_DELETE;
 446
 447                 ml->sml_values[ 0 ] = *old_dn;
 448                 ml->sml_nvalues[ 0 ] = *old_ndn;
 449
 450                 oex.oe_key = (void *)&memberof;
 451                 LDAP_SLIST_INSERT_HEAD(&op2.o_extra, &oex, oe_next);
 452                 op2.o_bd->bd_info = (BackendInfo *)on->on_info;
 453                 (void)op->o_bd->be_modify( &op2, &rs2 );
 454                 op2.o_bd->bd_info = bi;
 455                 LDAP_SLIST_REMOVE(&op2.o_extra, &oex, OpExtra, oe_next);
 456                 if ( rs2.sr_err != LDAP_SUCCESS ) {
 457                         char buf[ SLAP_TEXT_BUFLEN ];
 458                         snprintf( buf, sizeof( buf ),
 459                                 "memberof_value_modify DN=\"%s\" delete %s=\"%s\" failed err=%d",
 460                                 op2.o_req_dn.bv_val, ad->ad_cname.bv_val, old_dn->bv_val, rs2.sr_err );
 461                         Debug( LDAP_DEBUG_ANY, "%s: %s\n",
 462                                 op->o_log_prefix, buf, 0 );
 463                 }
 464
 465                 assert( op2.orm_modlist == &mod[ mcnt ] );
 466                 ml = op2.orm_modlist->sml_next;
 467                 if ( mcnt == 1 ) {
 468                         assert( ml == &mod[ 0 ] );
 469                         ml = ml->sml_next;
 470                 }
 471                 if ( ml != NULL ) {
 472                         slap_mods_free( ml, 1 );
 473                 }
 474         }
 475
 476         /* FIXME: if old_group_ndn doesn't exist, both delete __and__
 477          * add will fail; better split in two operations, although
 478          * not optimal in terms of performance.  At least it would
 479          * move towards self-repairing capabilities. */
 480 }
 481
 482 static int
 483 memberof_cleanup( Operation *op, SlapReply *rs )
 484 {
 485         slap_callback *sc = op->o_callback;
 486         memberof_cbinfo_t *mci = sc->sc_private;
 487
 488         op->o_callback = sc->sc_next;
 489         if ( mci->memberof )
 490                 ber_bvarray_free_x( mci->memberof, op->o_tmpmemctx );
 491         if ( mci->member )
 492                 ber_bvarray_free_x( mci->member, op->o_tmpmemctx );
 493         op->o_tmpfree( sc, op->o_tmpmemctx );
 494         return 0;
 495 }
 496
 497 static int memberof_res_add( Operation *op, SlapReply *rs );
 498 static int memberof_res_delete( Operation *op, SlapReply *rs );
 499 static int memberof_res_modify( Operation *op, SlapReply *rs );
 500 static int memberof_res_modrdn( Operation *op, SlapReply *rs );
 501
 502 static int
 503 memberof_op_add( Operation *op, SlapReply *rs )
 504 {
 505         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 506         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
 507
 508         Attribute       **ap, **map = NULL;
 509         int             rc = SLAP_CB_CONTINUE;
 510         int             i;
 511         struct berval   save_dn, save_ndn;
 512         slap_callback *sc;
 513         memberof_cbinfo_t *mci;
 514         OpExtra         *oex;
 515
 516         LDAP_SLIST_FOREACH( oex, &op->o_extra, oe_next ) {
 517                 if ( oex->oe_key == (void *)&memberof )
 518                         return SLAP_CB_CONTINUE;
 519         }
 520
 521         if ( op->ora_e->e_attrs == NULL ) {
 522                 /* FIXME: global overlay; need to deal with */
 523                 Debug( LDAP_DEBUG_ANY, "%s: memberof_op_add(\"%s\"): "
 524                         "consistency checks not implemented when overlay "
 525                         "is instantiated as global.\n",
 526                         op->o_log_prefix, op->o_req_dn.bv_val, 0 );
 527                 return SLAP_CB_CONTINUE;
 528         }
 529
 530         if ( MEMBEROF_REVERSE( mo ) ) {
 531                 for ( ap = &op->ora_e->e_attrs; *ap; ap = &(*ap)->a_next ) {
 532                         Attribute       *a = *ap;
 533
 534                         if ( a->a_desc == mo->mo_ad_memberof ) {
 535                                 map = ap;
 536                                 break;
 537                         }
 538                 }
 539         }
 540
 541         save_dn = op->o_dn;
 542         save_ndn = op->o_ndn;
 543
 544         if ( MEMBEROF_DANGLING_CHECK( mo )
 545                         && !get_relax( op )
 546                         && is_entry_objectclass_or_sub( op->ora_e, mo->mo_oc_group ) )
 547         {
 548                 op->o_dn = op->o_bd->be_rootdn;
 549                 op->o_ndn = op->o_bd->be_rootndn;
 550                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 551
 552                 for ( ap = &op->ora_e->e_attrs; *ap; ) {
 553                         Attribute       *a = *ap;
 554
 555                         if ( !is_ad_subtype( a->a_desc, mo->mo_ad_member ) ) {
 556                                 ap = &a->a_next;
 557                                 continue;
 558                         }
 559
 560                         assert( a->a_nvals != NULL );
 561
 562                         for ( i = 0; !BER_BVISNULL( &a->a_nvals[ i ] ); i++ ) {
 563                                 Entry           *e = NULL;
 564
 565                                 /* ITS#6670 Ignore member pointing to this entry */
 566                                 if ( dn_match( &a->a_nvals[i], &save_ndn ))
 567                                         continue;
 568
 569                                 rc = be_entry_get_rw( op, &a->a_nvals[ i ],
 570                                                 NULL, NULL, 0, &e );
 571                                 if ( rc == LDAP_SUCCESS ) {
 572                                         be_entry_release_r( op, e );
 573                                         continue;
 574                                 }
 575
 576                                 if ( MEMBEROF_DANGLING_ERROR( mo ) ) {
 577                                         rc = rs->sr_err = mo->mo_dangling_err;
 578                                         rs->sr_text = "adding non-existing object "
 579                                                 "as group member";
 580                                         send_ldap_result( op, rs );
 581                                         goto done;
 582                                 }
 583
 584                                 if ( MEMBEROF_DANGLING_DROP( mo ) ) {
 585                                         int     j;
 586
 587                                         Debug( LDAP_DEBUG_ANY, "%s: memberof_op_add(\"%s\"): "
 588                                                 "member=\"%s\" does not exist (stripping...)\n",
 589                                                 op->o_log_prefix, op->ora_e->e_name.bv_val,
 590                                                 a->a_vals[ i ].bv_val );
 591
 592                                         for ( j = i + 1; !BER_BVISNULL( &a->a_nvals[ j ] ); j++ );
 593                                         ber_memfree( a->a_vals[ i ].bv_val );
 594                                         BER_BVZERO( &a->a_vals[ i ] );
 595                                         if ( a->a_nvals != a->a_vals ) {
 596                                                 ber_memfree( a->a_nvals[ i ].bv_val );
 597                                                 BER_BVZERO( &a->a_nvals[ i ] );
 598                                         }
 599                                         if ( j - i == 1 ) {
 600                                                 break;
 601                                         }
 602
 603                                         AC_MEMCPY( &a->a_vals[ i ], &a->a_vals[ i + 1 ],
 604                                                 sizeof( struct berval ) * ( j - i ) );
 605                                         if ( a->a_nvals != a->a_vals ) {
 606                                                 AC_MEMCPY( &a->a_nvals[ i ], &a->a_nvals[ i + 1 ],
 607                                                         sizeof( struct berval ) * ( j - i ) );
 608                                         }
 609                                         i--;
 610                                         a->a_numvals--;
 611                                 }
 612                         }
 613
 614                         /* If all values have been removed,
 615                          * remove the attribute itself. */
 616                         if ( BER_BVISNULL( &a->a_nvals[ 0 ] ) ) {
 617                                 *ap = a->a_next;
 618                                 attr_free( a );
 619
 620                         } else {
 621                                 ap = &a->a_next;
 622                         }
 623                 }
 624                 op->o_dn = save_dn;
 625                 op->o_ndn = save_ndn;
 626                 op->o_bd->bd_info = (BackendInfo *)on;
 627         }
 628
 629         if ( map != NULL ) {
 630                 Attribute               *a = *map;
 631                 AccessControlState      acl_state = ACL_STATE_INIT;
 632
 633                 for ( i = 0; !BER_BVISNULL( &a->a_nvals[ i ] ); i++ ) {
 634                         Entry           *e;
 635
 636                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 637                         /* access is checked with the original identity */
 638                         rc = access_allowed( op, op->ora_e, mo->mo_ad_memberof,
 639                                         &a->a_nvals[ i ], ACL_WADD,
 640                                         &acl_state );
 641                         if ( rc == 0 ) {
 642                                 rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 643                                 rs->sr_text = NULL;
 644                                 send_ldap_result( op, rs );
 645                                 goto done;
 646                         }
 647                         /* ITS#6670 Ignore member pointing to this entry */
 648                         if ( dn_match( &a->a_nvals[i], &save_ndn ))
 649                                 continue;
 650
 651                         rc = be_entry_get_rw( op, &a->a_nvals[ i ],
 652                                         NULL, NULL, 0, &e );
 653                         op->o_bd->bd_info = (BackendInfo *)on;
 654                         if ( rc != LDAP_SUCCESS ) {
 655                                 if ( get_relax( op ) ) {
 656                                         continue;
 657                                 }
 658
 659                                 if ( MEMBEROF_DANGLING_ERROR( mo ) ) {
 660                                         rc = rs->sr_err = mo->mo_dangling_err;
 661                                         rs->sr_text = "adding non-existing object "
 662                                                 "as memberof";
 663                                         send_ldap_result( op, rs );
 664                                         goto done;
 665                                 }
 666
 667                                 if ( MEMBEROF_DANGLING_DROP( mo ) ) {
 668                                         int     j;
 669
 670                                         Debug( LDAP_DEBUG_ANY, "%s: memberof_op_add(\"%s\"): "
 671                                                 "memberof=\"%s\" does not exist (stripping...)\n",
 672                                                 op->o_log_prefix, op->ora_e->e_name.bv_val,
 673                                                 a->a_nvals[ i ].bv_val );
 674
 675                                         for ( j = i + 1; !BER_BVISNULL( &a->a_nvals[ j ] ); j++ );
 676                                         ber_memfree( a->a_vals[ i ].bv_val );
 677                                         BER_BVZERO( &a->a_vals[ i ] );
 678                                         if ( a->a_nvals != a->a_vals ) {
 679                                                 ber_memfree( a->a_nvals[ i ].bv_val );
 680                                                 BER_BVZERO( &a->a_nvals[ i ] );
 681                                         }
 682                                         if ( j - i == 1 ) {
 683                                                 break;
 684                                         }
 685
 686                                         AC_MEMCPY( &a->a_vals[ i ], &a->a_vals[ i + 1 ],
 687                                                 sizeof( struct berval ) * ( j - i ) );
 688                                         if ( a->a_nvals != a->a_vals ) {
 689                                                 AC_MEMCPY( &a->a_nvals[ i ], &a->a_nvals[ i + 1 ],
 690                                                         sizeof( struct berval ) * ( j - i ) );
 691                                         }
 692                                         i--;
 693                                 }
 694
 695                                 continue;
 696                         }
 697
 698                         /* access is checked with the original identity */
 699                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 700                         rc = access_allowed( op, e, mo->mo_ad_member,
 701                                         &op->o_req_ndn, ACL_WADD, NULL );
 702                         be_entry_release_r( op, e );
 703                         op->o_bd->bd_info = (BackendInfo *)on;
 704
 705                         if ( !rc ) {
 706                                 rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 707                                 rs->sr_text = "insufficient access to object referenced by memberof";
 708                                 send_ldap_result( op, rs );
 709                                 goto done;
 710                         }
 711                 }
 712
 713                 if ( BER_BVISNULL( &a->a_nvals[ 0 ] ) ) {
 714                         *map = a->a_next;
 715                         attr_free( a );
 716                 }
 717         }
 718
 719         rc = SLAP_CB_CONTINUE;
 720
 721         sc = op->o_tmpalloc( sizeof(slap_callback)+sizeof(*mci), op->o_tmpmemctx );
 722         sc->sc_private = sc+1;
 723         sc->sc_response = memberof_res_add;
 724         sc->sc_cleanup = memberof_cleanup;
 725         mci = sc->sc_private;
 726         mci->on = on;
 727         mci->member = NULL;
 728         mci->memberof = NULL;
 729         sc->sc_next = op->o_callback;
 730         op->o_callback = sc;
 731
 732 done:;
 733         op->o_dn = save_dn;
 734         op->o_ndn = save_ndn;
 735         op->o_bd->bd_info = (BackendInfo *)on;
 736
 737         return rc;
 738 }
 739
 740 static int
 741 memberof_op_delete( Operation *op, SlapReply *rs )
 742 {
 743         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 744         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
 745
 746         slap_callback *sc;
 747         memberof_cbinfo_t *mci;
 748         OpExtra         *oex;
 749
 750         LDAP_SLIST_FOREACH( oex, &op->o_extra, oe_next ) {
 751                 if ( oex->oe_key == (void *)&memberof )
 752                         return SLAP_CB_CONTINUE;
 753         }
 754
 755         sc = op->o_tmpalloc( sizeof(slap_callback)+sizeof(*mci), op->o_tmpmemctx );
 756         sc->sc_private = sc+1;
 757         sc->sc_response = memberof_res_delete;
 758         sc->sc_cleanup = memberof_cleanup;
 759         mci = sc->sc_private;
 760         mci->on = on;
 761         mci->member = NULL;
 762         mci->memberof = NULL;
 763         mci->what = MEMBEROF_IS_GROUP;
 764         if ( MEMBEROF_REFINT( mo ) ) {
 765                 mci->what = MEMBEROF_IS_BOTH;
 766         }
 767
 768         memberof_isGroupOrMember( op, mci );
 769
 770         sc->sc_next = op->o_callback;
 771         op->o_callback = sc;
 772
 773         return SLAP_CB_CONTINUE;
 774 }
 775
 776 static int
 777 memberof_op_modify( Operation *op, SlapReply *rs )
 778 {
 779         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
 780         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
 781
 782         Modifications   **mlp, **mmlp = NULL;
 783         int             rc = SLAP_CB_CONTINUE, save_member = 0;
 784         struct berval   save_dn, save_ndn;
 785         slap_callback *sc;
 786         memberof_cbinfo_t *mci, mcis;
 787         OpExtra         *oex;
 788
 789         LDAP_SLIST_FOREACH( oex, &op->o_extra, oe_next ) {
 790                 if ( oex->oe_key == (void *)&memberof )
 791                         return SLAP_CB_CONTINUE;
 792         }
 793
 794         if ( MEMBEROF_REVERSE( mo ) ) {
 795                 for ( mlp = &op->orm_modlist; *mlp; mlp = &(*mlp)->sml_next ) {
 796                         Modifications   *ml = *mlp;
 797
 798                         if ( ml->sml_desc == mo->mo_ad_memberof ) {
 799                                 mmlp = mlp;
 800                                 break;
 801                         }
 802                 }
 803         }
 804
 805         save_dn = op->o_dn;
 806         save_ndn = op->o_ndn;
 807         mcis.on = on;
 808         mcis.what = MEMBEROF_IS_GROUP;
 809
 810         if ( memberof_isGroupOrMember( op, &mcis ) == LDAP_SUCCESS
 811                 && ( mcis.what & MEMBEROF_IS_GROUP ) )
 812         {
 813                 Modifications *ml;
 814
 815                 for ( ml = op->orm_modlist; ml; ml = ml->sml_next ) {
 816                         if ( ml->sml_desc == mo->mo_ad_member ) {
 817                                 switch ( ml->sml_op ) {
 818                                 case LDAP_MOD_DELETE:
 819                                 case LDAP_MOD_REPLACE:
 820                                         save_member = 1;
 821                                         break;
 822                                 }
 823                         }
 824                 }
 825
 826
 827                 if ( MEMBEROF_DANGLING_CHECK( mo )
 828                                 && !get_relax( op ) )
 829                 {
 830                         op->o_dn = op->o_bd->be_rootdn;
 831                         op->o_ndn = op->o_bd->be_rootndn;
 832                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 833
 834                         assert( op->orm_modlist != NULL );
 835
 836                         for ( mlp = &op->orm_modlist; *mlp; ) {
 837                                 Modifications   *ml = *mlp;
 838                                 int             i;
 839
 840                                 if ( !is_ad_subtype( ml->sml_desc, mo->mo_ad_member ) ) {
 841                                         mlp = &ml->sml_next;
 842                                         continue;
 843                                 }
 844
 845                                 switch ( ml->sml_op ) {
 846                                 case LDAP_MOD_DELETE:
 847                                         /* we don't care about cancellations: if the value
 848                                          * exists, fine; if it doesn't, we let the underlying
 849                                          * database fail as appropriate; */
 850                                         mlp = &ml->sml_next;
 851                                         break;
 852
 853                                 case LDAP_MOD_REPLACE:
 854                                         /* Handle this just like a delete (see above) */
 855                                         if ( !ml->sml_values ) {
 856                                                 mlp = &ml->sml_next;
 857                                                 break;
 858                                         }
 859
 860                                 case LDAP_MOD_ADD:
 861                                         /* NOTE: right now, the attributeType we use
 862                                          * for member must have a normalized value */
 863                                         assert( ml->sml_nvalues != NULL );
 864
 865                                         for ( i = 0; !BER_BVISNULL( &ml->sml_nvalues[ i ] ); i++ ) {
 866                                                 int             rc;
 867                                                 Entry           *e;
 868
 869                                                 /* ITS#6670 Ignore member pointing to this entry */
 870                                                 if ( dn_match( &ml->sml_nvalues[i], &save_ndn ))
 871                                                         continue;
 872
 873                                                 if ( be_entry_get_rw( op, &ml->sml_nvalues[ i ],
 874                                                                 NULL, NULL, 0, &e ) == LDAP_SUCCESS )
 875                                                 {
 876                                                         be_entry_release_r( op, e );
 877                                                         continue;
 878                                                 }
 879
 880                                                 if ( MEMBEROF_DANGLING_ERROR( mo ) ) {
 881                                                         rc = rs->sr_err = mo->mo_dangling_err;
 882                                                         rs->sr_text = "adding non-existing object "
 883                                                                 "as group member";
 884                                                         send_ldap_result( op, rs );
 885                                                         goto done;
 886                                                 }
 887
 888                                                 if ( MEMBEROF_DANGLING_DROP( mo ) ) {
 889                                                         int     j;
 890
 891                                                         Debug( LDAP_DEBUG_ANY, "%s: memberof_op_modify(\"%s\"): "
 892                                                                 "member=\"%s\" does not exist (stripping...)\n",
 893                                                                 op->o_log_prefix, op->o_req_dn.bv_val,
 894                                                                 ml->sml_nvalues[ i ].bv_val );
 895
 896                                                         for ( j = i + 1; !BER_BVISNULL( &ml->sml_nvalues[ j ] ); j++ );
 897                                                         ber_memfree( ml->sml_values[ i ].bv_val );
 898                                                         BER_BVZERO( &ml->sml_values[ i ] );
 899                                                         ber_memfree( ml->sml_nvalues[ i ].bv_val );
 900                                                         BER_BVZERO( &ml->sml_nvalues[ i ] );
 901                                                         ml->sml_numvals--;
 902                                                         if ( j - i == 1 ) {
 903                                                                 break;
 904                                                         }
 905
 906                                                         AC_MEMCPY( &ml->sml_values[ i ], &ml->sml_values[ i + 1 ],
 907                                                                 sizeof( struct berval ) * ( j - i ) );
 908                                                         AC_MEMCPY( &ml->sml_nvalues[ i ], &ml->sml_nvalues[ i + 1 ],
 909                                                                 sizeof( struct berval ) * ( j - i ) );
 910                                                         i--;
 911                                                 }
 912                                         }
 913
 914                                         if ( BER_BVISNULL( &ml->sml_nvalues[ 0 ] ) ) {
 915                                                 *mlp = ml->sml_next;
 916                                                 slap_mod_free( &ml->sml_mod, 0 );
 917                                                 free( ml );
 918
 919                                         } else {
 920                                                 mlp = &ml->sml_next;
 921                                         }
 922
 923                                         break;
 924
 925                                 default:
 926                                         assert( 0 );
 927                                 }
 928                         }
 929                 }
 930         }
 931
 932         if ( mmlp != NULL ) {
 933                 Modifications   *ml = *mmlp;
 934                 int             i;
 935                 Entry           *target;
 936
 937                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 938                 rc = be_entry_get_rw( op, &op->o_req_ndn,
 939                                 NULL, NULL, 0, &target );
 940                 op->o_bd->bd_info = (BackendInfo *)on;
 941                 if ( rc != LDAP_SUCCESS ) {
 942                         rc = rs->sr_err = LDAP_NO_SUCH_OBJECT;
 943                         send_ldap_result( op, rs );
 944                         goto done;
 945                 }
 946
 947                 switch ( ml->sml_op ) {
 948                 case LDAP_MOD_DELETE:
 949                         if ( ml->sml_nvalues != NULL ) {
 950                                 AccessControlState      acl_state = ACL_STATE_INIT;
 951
 952                                 for ( i = 0; !BER_BVISNULL( &ml->sml_nvalues[ i ] ); i++ ) {
 953                                         Entry           *e;
 954
 955                                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 956                                         /* access is checked with the original identity */
 957                                         rc = access_allowed( op, target,
 958                                                         mo->mo_ad_memberof,
 959                                                         &ml->sml_nvalues[ i ],
 960                                                         ACL_WDEL,
 961                                                         &acl_state );
 962                                         if ( rc == 0 ) {
 963                                                 rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
 964                                                 rs->sr_text = NULL;
 965                                                 send_ldap_result( op, rs );
 966                                                 goto done2;
 967                                         }
 968
 969                                         rc = be_entry_get_rw( op, &ml->sml_nvalues[ i ],
 970                                                         NULL, NULL, 0, &e );
 971                                         op->o_bd->bd_info = (BackendInfo *)on;
 972                                         if ( rc != LDAP_SUCCESS ) {
 973                                                 if ( get_relax( op ) ) {
 974                                                         continue;
 975                                                 }
 976
 977                                                 if ( MEMBEROF_DANGLING_ERROR( mo ) ) {
 978                                                         rc = rs->sr_err = mo->mo_dangling_err;
 979                                                         rs->sr_text = "deleting non-existing object "
 980                                                                 "as memberof";
 981                                                         send_ldap_result( op, rs );
 982                                                         goto done2;
 983                                                 }
 984
 985                                                 if ( MEMBEROF_DANGLING_DROP( mo ) ) {
 986                                                         int     j;
 987
 988                                                         Debug( LDAP_DEBUG_ANY, "%s: memberof_op_modify(\"%s\"): "
 989                                                                 "memberof=\"%s\" does not exist (stripping...)\n",
 990                                                                 op->o_log_prefix, op->o_req_ndn.bv_val,
 991                                                                 ml->sml_nvalues[ i ].bv_val );
 992
 993                                                         for ( j = i + 1; !BER_BVISNULL( &ml->sml_nvalues[ j ] ); j++ );
 994                                                         ber_memfree( ml->sml_values[ i ].bv_val );
 995                                                         BER_BVZERO( &ml->sml_values[ i ] );
 996                                                         if ( ml->sml_nvalues != ml->sml_values ) {
 997                                                                 ber_memfree( ml->sml_nvalues[ i ].bv_val );
 998                                                                 BER_BVZERO( &ml->sml_nvalues[ i ] );
 999                                                         }
1000                                                         ml->sml_numvals--;
1001                                                         if ( j - i == 1 ) {
1002                                                                 break;
1003                                                         }
1004
1005                                                         AC_MEMCPY( &ml->sml_values[ i ], &ml->sml_values[ i + 1 ],
1006                                                                 sizeof( struct berval ) * ( j - i ) );
1007                                                         if ( ml->sml_nvalues != ml->sml_values ) {
1008                                                                 AC_MEMCPY( &ml->sml_nvalues[ i ], &ml->sml_nvalues[ i + 1 ],
1009                                                                         sizeof( struct berval ) * ( j - i ) );
1010                                                         }
1011                                                         i--;
1012                                                 }
1013
1014                                                 continue;
1015                                         }
1016
1017                                         /* access is checked with the original identity */
1018                                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
1019                                         rc = access_allowed( op, e, mo->mo_ad_member,
1020                                                         &op->o_req_ndn,
1021                                                         ACL_WDEL, NULL );
1022                                         be_entry_release_r( op, e );
1023                                         op->o_bd->bd_info = (BackendInfo *)on;
1024
1025                                         if ( !rc ) {
1026                                                 rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1027                                                 rs->sr_text = "insufficient access to object referenced by memberof";
1028                                                 send_ldap_result( op, rs );
1029                                                 goto done;
1030                                         }
1031                                 }
1032
1033                                 if ( BER_BVISNULL( &ml->sml_nvalues[ 0 ] ) ) {
1034                                         *mmlp = ml->sml_next;
1035                                         slap_mod_free( &ml->sml_mod, 0 );
1036                                         free( ml );
1037                                 }
1038
1039                                 break;
1040                         }
1041                         /* fall thru */
1042
1043                 case LDAP_MOD_REPLACE:
1044
1045                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
1046                         /* access is checked with the original identity */
1047                         rc = access_allowed( op, target,
1048                                         mo->mo_ad_memberof,
1049                                         NULL,
1050                                         ACL_WDEL, NULL );
1051                         op->o_bd->bd_info = (BackendInfo *)on;
1052                         if ( rc == 0 ) {
1053                                 rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1054                                 rs->sr_text = NULL;
1055                                 send_ldap_result( op, rs );
1056                                 goto done2;
1057                         }
1058
1059                         if ( ml->sml_op == LDAP_MOD_DELETE || !ml->sml_values ) {
1060                                 break;
1061                         }
1062                         /* fall thru */
1063
1064                 case LDAP_MOD_ADD: {
1065                         AccessControlState      acl_state = ACL_STATE_INIT;
1066
1067                         for ( i = 0; !BER_BVISNULL( &ml->sml_nvalues[ i ] ); i++ ) {
1068                                 Entry           *e;
1069
1070                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1071                                 /* access is checked with the original identity */
1072                                 rc = access_allowed( op, target,
1073                                                 mo->mo_ad_memberof,
1074                                                 &ml->sml_nvalues[ i ],
1075                                                 ACL_WADD,
1076                                                 &acl_state );
1077                                 if ( rc == 0 ) {
1078                                         rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1079                                         rs->sr_text = NULL;
1080                                         send_ldap_result( op, rs );
1081                                         goto done2;
1082                                 }
1083
1084                                 /* ITS#6670 Ignore member pointing to this entry */
1085                                 if ( dn_match( &ml->sml_nvalues[i], &save_ndn ))
1086                                         continue;
1087
1088                                 rc = be_entry_get_rw( op, &ml->sml_nvalues[ i ],
1089                                                 NULL, NULL, 0, &e );
1090                                 op->o_bd->bd_info = (BackendInfo *)on;
1091                                 if ( rc != LDAP_SUCCESS ) {
1092                                         if ( MEMBEROF_DANGLING_ERROR( mo ) ) {
1093                                                 rc = rs->sr_err = mo->mo_dangling_err;
1094                                                 rs->sr_text = "adding non-existing object "
1095                                                         "as memberof";
1096                                                 send_ldap_result( op, rs );
1097                                                 goto done2;
1098                                         }
1099
1100                                         if ( MEMBEROF_DANGLING_DROP( mo ) ) {
1101                                                 int     j;
1102
1103                                                 Debug( LDAP_DEBUG_ANY, "%s: memberof_op_modify(\"%s\"): "
1104                                                         "memberof=\"%s\" does not exist (stripping...)\n",
1105                                                         op->o_log_prefix, op->o_req_ndn.bv_val,
1106                                                         ml->sml_nvalues[ i ].bv_val );
1107
1108                                                 for ( j = i + 1; !BER_BVISNULL( &ml->sml_nvalues[ j ] ); j++ );
1109                                                 ber_memfree( ml->sml_values[ i ].bv_val );
1110                                                 BER_BVZERO( &ml->sml_values[ i ] );
1111                                                 if ( ml->sml_nvalues != ml->sml_values ) {
1112                                                         ber_memfree( ml->sml_nvalues[ i ].bv_val );
1113                                                         BER_BVZERO( &ml->sml_nvalues[ i ] );
1114                                                 }
1115                                                 ml->sml_numvals--;
1116                                                 if ( j - i == 1 ) {
1117                                                         break;
1118                                                 }
1119
1120                                                 AC_MEMCPY( &ml->sml_values[ i ], &ml->sml_values[ i + 1 ],
1121                                                         sizeof( struct berval ) * ( j - i ) );
1122                                                 if ( ml->sml_nvalues != ml->sml_values ) {
1123                                                         AC_MEMCPY( &ml->sml_nvalues[ i ], &ml->sml_nvalues[ i + 1 ],
1124                                                                 sizeof( struct berval ) * ( j - i ) );
1125                                                 }
1126                                                 i--;
1127                                         }
1128
1129                                         continue;
1130                                 }
1131
1132                                 /* access is checked with the original identity */
1133                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1134                                 rc = access_allowed( op, e, mo->mo_ad_member,
1135                                                 &op->o_req_ndn,
1136                                                 ACL_WDEL, NULL );
1137                                 be_entry_release_r( op, e );
1138                                 op->o_bd->bd_info = (BackendInfo *)on;
1139
1140                                 if ( !rc ) {
1141                                         rc = rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
1142                                         rs->sr_text = "insufficient access to object referenced by memberof";
1143                                         send_ldap_result( op, rs );
1144                                         goto done;
1145                                 }
1146                         }
1147
1148                         if ( BER_BVISNULL( &ml->sml_nvalues[ 0 ] ) ) {
1149                                 *mmlp = ml->sml_next;
1150                                 slap_mod_free( &ml->sml_mod, 0 );
1151                                 free( ml );
1152                         }
1153
1154                         } break;
1155
1156                 default:
1157                         assert( 0 );
1158                 }
1159
1160 done2:;
1161                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1162                 be_entry_release_r( op, target );
1163                 op->o_bd->bd_info = (BackendInfo *)on;
1164         }
1165
1166         sc = op->o_tmpalloc( sizeof(slap_callback)+sizeof(*mci), op->o_tmpmemctx );
1167         sc->sc_private = sc+1;
1168         sc->sc_response = memberof_res_modify;
1169         sc->sc_cleanup = memberof_cleanup;
1170         mci = sc->sc_private;
1171         mci->on = on;
1172         mci->member = NULL;
1173         mci->memberof = NULL;
1174         mci->what = mcis.what;
1175
1176         if ( save_member ) {
1177                 op->o_dn = op->o_bd->be_rootdn;
1178                 op->o_ndn = op->o_bd->be_rootndn;
1179                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1180                 rc = backend_attribute( op, NULL, &op->o_req_ndn,
1181                                 mo->mo_ad_member, &mci->member, ACL_READ );
1182                 op->o_bd->bd_info = (BackendInfo *)on;
1183         }
1184
1185         sc->sc_next = op->o_callback;
1186         op->o_callback = sc;
1187
1188         rc = SLAP_CB_CONTINUE;
1189
1190 done:;
1191         op->o_dn = save_dn;
1192         op->o_ndn = save_ndn;
1193         op->o_bd->bd_info = (BackendInfo *)on;
1194
1195         return rc;
1196 }
1197
1198 static int
1199 memberof_op_modrdn( Operation *op, SlapReply *rs )
1200 {
1201         slap_overinst   *on = (slap_overinst *)op->o_bd->bd_info;
1202         slap_callback *sc;
1203         memberof_cbinfo_t *mci;
1204         OpExtra         *oex;
1205
1206         LDAP_SLIST_FOREACH( oex, &op->o_extra, oe_next ) {
1207                 if ( oex->oe_key == (void *)&memberof )
1208                         return SLAP_CB_CONTINUE;
1209         }
1210
1211         sc = op->o_tmpalloc( sizeof(slap_callback)+sizeof(*mci), op->o_tmpmemctx );
1212         sc->sc_private = sc+1;
1213         sc->sc_response = memberof_res_modrdn;
1214         sc->sc_cleanup = memberof_cleanup;
1215         mci = sc->sc_private;
1216         mci->on = on;
1217         mci->member = NULL;
1218         mci->memberof = NULL;
1219
1220         sc->sc_next = op->o_callback;
1221         op->o_callback = sc;
1222
1223         return SLAP_CB_CONTINUE;
1224 }
1225
1226 /*
1227  * response callback that adds memberof values when a group is added.
1228  */
1229 static int
1230 memberof_res_add( Operation *op, SlapReply *rs )
1231 {
1232         memberof_cbinfo_t *mci = op->o_callback->sc_private;
1233         slap_overinst   *on = mci->on;
1234         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1235
1236         int             i;
1237
1238         if ( rs->sr_err != LDAP_SUCCESS ) {
1239                 return SLAP_CB_CONTINUE;
1240         }
1241
1242         if ( MEMBEROF_REVERSE( mo ) ) {
1243                 Attribute       *ma;
1244
1245                 ma = attr_find( op->ora_e->e_attrs, mo->mo_ad_memberof );
1246                 if ( ma != NULL ) {
1247                         /* relax is required to allow to add
1248                          * a non-existing member */
1249                         op->o_relax = SLAP_CONTROL_CRITICAL;
1250
1251                         for ( i = 0; !BER_BVISNULL( &ma->a_nvals[ i ] ); i++ ) {
1252
1253                                 /* ITS#6670 Ignore member pointing to this entry */
1254                                 if ( dn_match( &ma->a_nvals[i], &op->o_req_ndn ))
1255                                         continue;
1256
1257                                 /* the modification is attempted
1258                                  * with the original identity */
1259                                 memberof_value_modify( op,
1260                                         &ma->a_nvals[ i ], mo->mo_ad_member,
1261                                         NULL, NULL, &op->o_req_dn, &op->o_req_ndn );
1262                         }
1263                 }
1264         }
1265
1266         if ( is_entry_objectclass_or_sub( op->ora_e, mo->mo_oc_group ) ) {
1267                 Attribute       *a;
1268
1269                 for ( a = attrs_find( op->ora_e->e_attrs, mo->mo_ad_member );
1270                                 a != NULL;
1271                                 a = attrs_find( a->a_next, mo->mo_ad_member ) )
1272                 {
1273                         for ( i = 0; !BER_BVISNULL( &a->a_nvals[ i ] ); i++ ) {
1274                                 /* ITS#6670 Ignore member pointing to this entry */
1275                                 if ( dn_match( &a->a_nvals[i], &op->o_req_ndn ))
1276                                         continue;
1277
1278                                 memberof_value_modify( op,
1279                                                 &a->a_nvals[ i ],
1280                                                 mo->mo_ad_memberof,
1281                                                 NULL, NULL,
1282                                                 &op->o_req_dn,
1283                                                 &op->o_req_ndn );
1284                         }
1285                 }
1286         }
1287
1288         return SLAP_CB_CONTINUE;
1289 }
1290
1291 /*
1292  * response callback that deletes memberof values when a group is deleted.
1293  */
1294 static int
1295 memberof_res_delete( Operation *op, SlapReply *rs )
1296 {
1297         memberof_cbinfo_t *mci = op->o_callback->sc_private;
1298         slap_overinst   *on = mci->on;
1299         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1300
1301         BerVarray       vals;
1302         int             i;
1303
1304         if ( rs->sr_err != LDAP_SUCCESS ) {
1305                 return SLAP_CB_CONTINUE;
1306         }
1307
1308         vals = mci->member;
1309         if ( vals != NULL ) {
1310                 for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1311                         memberof_value_modify( op,
1312                                         &vals[ i ], mo->mo_ad_memberof,
1313                                         &op->o_req_dn, &op->o_req_ndn,
1314                                         NULL, NULL );
1315                 }
1316         }
1317
1318         if ( MEMBEROF_REFINT( mo ) ) {
1319                 vals = mci->memberof;
1320                 if ( vals != NULL ) {
1321                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1322                                 memberof_value_modify( op,
1323                                                 &vals[ i ], mo->mo_ad_member,
1324                                                 &op->o_req_dn, &op->o_req_ndn,
1325                                                 NULL, NULL );
1326                         }
1327                 }
1328         }
1329
1330         return SLAP_CB_CONTINUE;
1331 }
1332
1333 /*
1334  * response callback that adds/deletes memberof values when a group
1335  * is modified.
1336  */
1337 static int
1338 memberof_res_modify( Operation *op, SlapReply *rs )
1339 {
1340         memberof_cbinfo_t *mci = op->o_callback->sc_private;
1341         slap_overinst   *on = mci->on;
1342         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1343
1344         int             i, rc;
1345         Modifications   *ml, *mml = NULL;
1346         BerVarray       vals;
1347
1348         if ( rs->sr_err != LDAP_SUCCESS ) {
1349                 return SLAP_CB_CONTINUE;
1350         }
1351
1352         if ( MEMBEROF_REVERSE( mo ) ) {
1353                 for ( ml = op->orm_modlist; ml; ml = ml->sml_next ) {
1354                         if ( ml->sml_desc == mo->mo_ad_memberof ) {
1355                                 mml = ml;
1356                                 break;
1357                         }
1358                 }
1359         }
1360
1361         if ( mml != NULL ) {
1362                 BerVarray       vals = mml->sml_nvalues;
1363
1364                 switch ( mml->sml_op ) {
1365                 case LDAP_MOD_DELETE:
1366                         if ( vals != NULL ) {
1367                                 for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1368                                         memberof_value_modify( op,
1369                                                         &vals[ i ], mo->mo_ad_member,
1370                                                         &op->o_req_dn, &op->o_req_ndn,
1371                                                         NULL, NULL );
1372                                 }
1373                                 break;
1374                         }
1375                         /* fall thru */
1376
1377                 case LDAP_MOD_REPLACE:
1378                         /* delete all ... */
1379                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
1380                         rc = backend_attribute( op, NULL, &op->o_req_ndn,
1381                                         mo->mo_ad_memberof, &vals, ACL_READ );
1382                         op->o_bd->bd_info = (BackendInfo *)on;
1383                         if ( rc == LDAP_SUCCESS ) {
1384                                 for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1385                                         memberof_value_modify( op,
1386                                                         &vals[ i ], mo->mo_ad_member,
1387                                                         &op->o_req_dn, &op->o_req_ndn,
1388                                                         NULL, NULL );
1389                                 }
1390                                 ber_bvarray_free_x( vals, op->o_tmpmemctx );
1391                         }
1392
1393                         if ( ml->sml_op == LDAP_MOD_DELETE || !mml->sml_values ) {
1394                                 break;
1395                         }
1396                         /* fall thru */
1397
1398                 case LDAP_MOD_ADD:
1399                         assert( vals != NULL );
1400
1401                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1402                                 memberof_value_modify( op,
1403                                                 &vals[ i ], mo->mo_ad_member,
1404                                                 NULL, NULL,
1405                                                 &op->o_req_dn, &op->o_req_ndn );
1406                         }
1407                         break;
1408
1409                 default:
1410                         assert( 0 );
1411                 }
1412         }
1413
1414         if ( mci->what & MEMBEROF_IS_GROUP )
1415         {
1416                 for ( ml = op->orm_modlist; ml; ml = ml->sml_next ) {
1417                         if ( ml->sml_desc != mo->mo_ad_member ) {
1418                                 continue;
1419                         }
1420
1421                         switch ( ml->sml_op ) {
1422                         case LDAP_MOD_DELETE:
1423                                 vals = ml->sml_nvalues;
1424                                 if ( vals != NULL ) {
1425                                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1426                                                 memberof_value_modify( op,
1427                                                                 &vals[ i ], mo->mo_ad_memberof,
1428                                                                 &op->o_req_dn, &op->o_req_ndn,
1429                                                                 NULL, NULL );
1430                                         }
1431                                         break;
1432                                 }
1433                                 /* fall thru */
1434
1435                         case LDAP_MOD_REPLACE:
1436                                 vals = mci->member;
1437
1438                                 /* delete all ... */
1439                                 if ( vals != NULL ) {
1440                                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1441                                                 memberof_value_modify( op,
1442                                                                 &vals[ i ], mo->mo_ad_memberof,
1443                                                                 &op->o_req_dn, &op->o_req_ndn,
1444                                                                 NULL, NULL );
1445                                         }
1446                                 }
1447
1448                                 if ( ml->sml_op == LDAP_MOD_DELETE || !ml->sml_values ) {
1449                                         break;
1450                                 }
1451                                 /* fall thru */
1452
1453                         case LDAP_MOD_ADD:
1454                                 assert( ml->sml_nvalues != NULL );
1455                                 vals = ml->sml_nvalues;
1456                                 for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1457                                         memberof_value_modify( op,
1458                                                         &vals[ i ], mo->mo_ad_memberof,
1459                                                         NULL, NULL,
1460                                                         &op->o_req_dn, &op->o_req_ndn );
1461                                 }
1462                                 break;
1463
1464                         default:
1465                                 assert( 0 );
1466                         }
1467                 }
1468         }
1469
1470         return SLAP_CB_CONTINUE;
1471 }
1472
1473 /*
1474  * response callback that adds/deletes member values when a group member
1475  * is renamed.
1476  */
1477 static int
1478 memberof_res_modrdn( Operation *op, SlapReply *rs )
1479 {
1480         memberof_cbinfo_t *mci = op->o_callback->sc_private;
1481         slap_overinst   *on = mci->on;
1482         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1483
1484         struct berval   newPDN, newDN = BER_BVNULL, newPNDN, newNDN;
1485         int             i, rc;
1486         BerVarray       vals;
1487
1488         struct berval   save_dn, save_ndn;
1489
1490         if ( rs->sr_err != LDAP_SUCCESS ) {
1491                 return SLAP_CB_CONTINUE;
1492         }
1493
1494         mci->what = MEMBEROF_IS_GROUP;
1495         if ( MEMBEROF_REFINT( mo ) ) {
1496                 mci->what |= MEMBEROF_IS_MEMBER;
1497         }
1498
1499         if ( op->orr_nnewSup ) {
1500                 newPNDN = *op->orr_nnewSup;
1501
1502         } else {
1503                 dnParent( &op->o_req_ndn, &newPNDN );
1504         }
1505
1506         build_new_dn( &newNDN, &newPNDN, &op->orr_nnewrdn, op->o_tmpmemctx );
1507
1508         save_dn = op->o_req_dn;
1509         save_ndn = op->o_req_ndn;
1510
1511         op->o_req_dn = newNDN;
1512         op->o_req_ndn = newNDN;
1513         rc = memberof_isGroupOrMember( op, mci );
1514         op->o_req_dn = save_dn;
1515         op->o_req_ndn = save_ndn;
1516
1517         if ( rc != LDAP_SUCCESS || mci->what == MEMBEROF_IS_NONE ) {
1518                 goto done;
1519         }
1520
1521         if ( op->orr_newSup ) {
1522                 newPDN = *op->orr_newSup;
1523
1524         } else {
1525                 dnParent( &op->o_req_dn, &newPDN );
1526         }
1527
1528         build_new_dn( &newDN, &newPDN, &op->orr_newrdn, op->o_tmpmemctx );
1529
1530         if ( mci->what & MEMBEROF_IS_GROUP ) {
1531                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1532                 rc = backend_attribute( op, NULL, &newNDN,
1533                                 mo->mo_ad_member, &vals, ACL_READ );
1534                 op->o_bd->bd_info = (BackendInfo *)on;
1535
1536                 if ( rc == LDAP_SUCCESS ) {
1537                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1538                                 memberof_value_modify( op,
1539                                                 &vals[ i ], mo->mo_ad_memberof,
1540                                                 &op->o_req_dn, &op->o_req_ndn,
1541                                                 &newDN, &newNDN );
1542                         }
1543                         ber_bvarray_free_x( vals, op->o_tmpmemctx );
1544                 }
1545         }
1546
1547         if ( MEMBEROF_REFINT( mo ) && ( mci->what & MEMBEROF_IS_MEMBER ) ) {
1548                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1549                 rc = backend_attribute( op, NULL, &newNDN,
1550                                 mo->mo_ad_memberof, &vals, ACL_READ );
1551                 op->o_bd->bd_info = (BackendInfo *)on;
1552
1553                 if ( rc == LDAP_SUCCESS ) {
1554                         for ( i = 0; !BER_BVISNULL( &vals[ i ] ); i++ ) {
1555                                 memberof_value_modify( op,
1556                                                 &vals[ i ], mo->mo_ad_member,
1557                                                 &op->o_req_dn, &op->o_req_ndn,
1558                                                 &newDN, &newNDN );
1559                         }
1560                         ber_bvarray_free_x( vals, op->o_tmpmemctx );
1561                 }
1562         }
1563
1564 done:;
1565         if ( !BER_BVISNULL( &newDN ) ) {
1566                 op->o_tmpfree( newDN.bv_val, op->o_tmpmemctx );
1567         }
1568         op->o_tmpfree( newNDN.bv_val, op->o_tmpmemctx );
1569
1570         return SLAP_CB_CONTINUE;
1571 }
1572
1573
1574 static int
1575 memberof_db_init(
1576         BackendDB       *be,
1577         ConfigReply     *cr )
1578 {
1579         slap_overinst   *on = (slap_overinst *)be->bd_info;
1580         memberof_t              *mo;
1581
1582         mo = (memberof_t *)ch_calloc( 1, sizeof( memberof_t ) );
1583
1584         /* safe default */
1585         mo->mo_dangling_err = LDAP_CONSTRAINT_VIOLATION;
1586
1587         on->on_bi.bi_private = (void *)mo;
1588
1589         return 0;
1590 }
1591
1592 enum {
1593         MO_DN = 1,
1594         MO_DANGLING,
1595         MO_REFINT,
1596         MO_GROUP_OC,
1597         MO_MEMBER_AD,
1598         MO_MEMBER_OF_AD,
1599 #if 0
1600         MO_REVERSE,
1601 #endif
1602
1603         MO_DANGLING_ERROR,
1604
1605         MO_LAST
1606 };
1607
1608 static ConfigDriver mo_cf_gen;
1609
1610 #define OID             "1.3.6.1.4.1.7136.2.666.4"
1611 #define OIDAT           OID ".1.1"
1612 #define OIDCFGAT        OID ".1.2"
1613 #define OIDOC           OID ".2.1"
1614 #define OIDCFGOC        OID ".2.2"
1615
1616
1617 static ConfigTable mo_cfg[] = {
1618         { "memberof-dn", "modifiersName",
1619                 2, 2, 0, ARG_MAGIC|ARG_DN|MO_DN, mo_cf_gen,
1620                 "( OLcfgOvAt:18.0 NAME 'olcMemberOfDN' "
1621                         "DESC 'DN to be used as modifiersName' "
1622                         "SYNTAX OMsDN SINGLE-VALUE )",
1623                 NULL, NULL },
1624
1625         { "memberof-dangling", "ignore|drop|error",
1626                 2, 2, 0, ARG_MAGIC|MO_DANGLING, mo_cf_gen,
1627                 "( OLcfgOvAt:18.1 NAME 'olcMemberOfDangling' "
1628                         "DESC 'Behavior with respect to dangling members, "
1629                                 "constrained to ignore, drop, error' "
1630                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",
1631                 NULL, NULL },
1632
1633         { "memberof-refint", "true|FALSE",
1634                 2, 2, 0, ARG_MAGIC|ARG_ON_OFF|MO_REFINT, mo_cf_gen,
1635                 "( OLcfgOvAt:18.2 NAME 'olcMemberOfRefInt' "
1636                         "DESC 'Take care of referential integrity' "
1637                         "SYNTAX OMsBoolean SINGLE-VALUE )",
1638                 NULL, NULL },
1639
1640         { "memberof-group-oc", "objectClass",
1641                 2, 2, 0, ARG_MAGIC|MO_GROUP_OC, mo_cf_gen,
1642                 "( OLcfgOvAt:18.3 NAME 'olcMemberOfGroupOC' "
1643                         "DESC 'Group objectClass' "
1644                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",
1645                 NULL, NULL },
1646
1647         { "memberof-member-ad", "member attribute",
1648                 2, 2, 0, ARG_MAGIC|MO_MEMBER_AD, mo_cf_gen,
1649                 "( OLcfgOvAt:18.4 NAME 'olcMemberOfMemberAD' "
1650                         "DESC 'member attribute' "
1651                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",
1652                 NULL, NULL },
1653
1654         { "memberof-memberof-ad", "memberOf attribute",
1655                 2, 2, 0, ARG_MAGIC|MO_MEMBER_OF_AD, mo_cf_gen,
1656                 "( OLcfgOvAt:18.5 NAME 'olcMemberOfMemberOfAD' "
1657                         "DESC 'memberOf attribute' "
1658                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",
1659                 NULL, NULL },
1660
1661 #if 0
1662         { "memberof-reverse", "true|FALSE",
1663                 2, 2, 0, ARG_MAGIC|ARG_ON_OFF|MO_REVERSE, mo_cf_gen,
1664                 "( OLcfgOvAt:18.6 NAME 'olcMemberOfReverse' "
1665                         "DESC 'Take care of referential integrity "
1666                                 "also when directly modifying memberOf' "
1667                         "SYNTAX OMsBoolean SINGLE-VALUE )",
1668                 NULL, NULL },
1669 #endif
1670
1671         { "memberof-dangling-error", "error code",
1672                 2, 2, 0, ARG_MAGIC|MO_DANGLING_ERROR, mo_cf_gen,
1673                 "( OLcfgOvAt:18.7 NAME 'olcMemberOfDanglingError' "
1674                         "DESC 'Error code returned in case of dangling back reference' "
1675                         "SYNTAX OMsDirectoryString SINGLE-VALUE )",
1676                 NULL, NULL },
1677
1678         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
1679 };
1680
1681 static ConfigOCs mo_ocs[] = {
1682         { "( OLcfgOvOc:18.1 "
1683                 "NAME 'olcMemberOf' "
1684                 "DESC 'Member-of configuration' "
1685                 "SUP olcOverlayConfig "
1686                 "MAY ( "
1687                         "olcMemberOfDN "
1688                         "$ olcMemberOfDangling "
1689                         "$ olcMemberOfDanglingError"
1690                         "$ olcMemberOfRefInt "
1691                         "$ olcMemberOfGroupOC "
1692                         "$ olcMemberOfMemberAD "
1693                         "$ olcMemberOfMemberOfAD "
1694 #if 0
1695                         "$ olcMemberOfReverse "
1696 #endif
1697                         ") "
1698                 ")",
1699                 Cft_Overlay, mo_cfg, NULL, NULL },
1700         { NULL, 0, NULL }
1701 };
1702
1703 static slap_verbmasks dangling_mode[] = {
1704         { BER_BVC( "ignore" ),          MEMBEROF_NONE },
1705         { BER_BVC( "drop" ),            MEMBEROF_FDANGLING_DROP },
1706         { BER_BVC( "error" ),           MEMBEROF_FDANGLING_ERROR },
1707         { BER_BVNULL,                   0 }
1708 };
1709
1710 static int
1711 memberof_make_group_filter( memberof_t *mo )
1712 {
1713         char            *ptr;
1714
1715         if ( !BER_BVISNULL( &mo->mo_groupFilterstr ) ) {
1716                 ch_free( mo->mo_groupFilterstr.bv_val );
1717         }
1718
1719         mo->mo_groupFilter.f_choice = LDAP_FILTER_EQUALITY;
1720         mo->mo_groupFilter.f_ava = &mo->mo_groupAVA;
1721
1722         mo->mo_groupFilter.f_av_desc = slap_schema.si_ad_objectClass;
1723         mo->mo_groupFilter.f_av_value = mo->mo_oc_group->soc_cname;
1724
1725         mo->mo_groupFilterstr.bv_len = STRLENOF( "(=)" )
1726                 + slap_schema.si_ad_objectClass->ad_cname.bv_len
1727                 + mo->mo_oc_group->soc_cname.bv_len;
1728         ptr = mo->mo_groupFilterstr.bv_val = ch_malloc( mo->mo_groupFilterstr.bv_len + 1 );
1729         *ptr++ = '(';
1730         ptr = lutil_strcopy( ptr, slap_schema.si_ad_objectClass->ad_cname.bv_val );
1731         *ptr++ = '=';
1732         ptr = lutil_strcopy( ptr, mo->mo_oc_group->soc_cname.bv_val );
1733         *ptr++ = ')';
1734         *ptr = '\0';
1735
1736         return 0;
1737 }
1738
1739 static int
1740 memberof_make_member_filter( memberof_t *mo )
1741 {
1742         char            *ptr;
1743
1744         if ( !BER_BVISNULL( &mo->mo_memberFilterstr ) ) {
1745                 ch_free( mo->mo_memberFilterstr.bv_val );
1746         }
1747
1748         mo->mo_memberFilter.f_choice = LDAP_FILTER_PRESENT;
1749         mo->mo_memberFilter.f_desc = mo->mo_ad_memberof;
1750
1751         mo->mo_memberFilterstr.bv_len = STRLENOF( "(=*)" )
1752                 + mo->mo_ad_memberof->ad_cname.bv_len;
1753         ptr = mo->mo_memberFilterstr.bv_val = ch_malloc( mo->mo_memberFilterstr.bv_len + 1 );
1754         *ptr++ = '(';
1755         ptr = lutil_strcopy( ptr, mo->mo_ad_memberof->ad_cname.bv_val );
1756         ptr = lutil_strcopy( ptr, "=*)" );
1757
1758         return 0;
1759 }
1760
1761 static int
1762 mo_cf_gen( ConfigArgs *c )
1763 {
1764         slap_overinst   *on = (slap_overinst *)c->bi;
1765         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1766
1767         int             i, rc = 0;
1768
1769         if ( c->op == SLAP_CONFIG_EMIT ) {
1770                 struct berval bv = BER_BVNULL;
1771
1772                 switch( c->type ) {
1773                 case MO_DN:
1774                         if ( mo->mo_dn.bv_val != NULL) {
1775                                 value_add_one( &c->rvalue_vals, &mo->mo_dn );
1776                                 value_add_one( &c->rvalue_nvals, &mo->mo_ndn );
1777                         }
1778                         break;
1779
1780                 case MO_DANGLING:
1781                         enum_to_verb( dangling_mode, (mo->mo_flags & MEMBEROF_FDANGLING_MASK), &bv );
1782                         if ( BER_BVISNULL( &bv ) ) {
1783                                 /* there's something wrong... */
1784                                 assert( 0 );
1785                                 rc = 1;
1786
1787                         } else {
1788                                 value_add_one( &c->rvalue_vals, &bv );
1789                         }
1790                         break;
1791
1792                 case MO_DANGLING_ERROR:
1793                         if ( mo->mo_flags & MEMBEROF_FDANGLING_ERROR ) {
1794                                 char buf[ SLAP_TEXT_BUFLEN ];
1795                                 enum_to_verb( slap_ldap_response_code, mo->mo_dangling_err, &bv );
1796                                 if ( BER_BVISNULL( &bv ) ) {
1797                                         bv.bv_len = snprintf( buf, sizeof( buf ), "0x%x", mo->mo_dangling_err );
1798                                         if ( bv.bv_len < sizeof( buf ) ) {
1799                                                 bv.bv_val = buf;
1800                                         } else {
1801                                                 rc = 1;
1802                                                 break;
1803                                         }
1804                                 }
1805                                 value_add_one( &c->rvalue_vals, &bv );
1806                         } else {
1807                                 rc = 1;
1808                         }
1809                         break;
1810
1811                 case MO_REFINT:
1812                         c->value_int = MEMBEROF_REFINT( mo );
1813                         break;
1814
1815 #if 0
1816                 case MO_REVERSE:
1817                         c->value_int = MEMBEROF_REVERSE( mo );
1818                         break;
1819 #endif
1820
1821                 case MO_GROUP_OC:
1822                         if ( mo->mo_oc_group != NULL ){
1823                                 value_add_one( &c->rvalue_vals, &mo->mo_oc_group->soc_cname );
1824                         }
1825                         break;
1826
1827                 case MO_MEMBER_AD:
1828                         if ( mo->mo_ad_member != NULL ){
1829                                 value_add_one( &c->rvalue_vals, &mo->mo_ad_member->ad_cname );
1830                         }
1831                         break;
1832
1833                 case MO_MEMBER_OF_AD:
1834                         if ( mo->mo_ad_memberof != NULL ){
1835                                 value_add_one( &c->rvalue_vals, &mo->mo_ad_memberof->ad_cname );
1836                         }
1837                         break;
1838
1839                 default:
1840                         assert( 0 );
1841                         return 1;
1842                 }
1843
1844                 return rc;
1845
1846         } else if ( c->op == LDAP_MOD_DELETE ) {
1847                 return 1;       /* FIXME */
1848
1849         } else {
1850                 switch( c->type ) {
1851                 case MO_DN:
1852                         if ( !BER_BVISNULL( &mo->mo_dn ) ) {
1853                                 ber_memfree( mo->mo_dn.bv_val );
1854                                 ber_memfree( mo->mo_ndn.bv_val );
1855                         }
1856                         mo->mo_dn = c->value_dn;
1857                         mo->mo_ndn = c->value_ndn;
1858                         break;
1859
1860                 case MO_DANGLING:
1861                         i = verb_to_mask( c->argv[ 1 ], dangling_mode );
1862                         if ( BER_BVISNULL( &dangling_mode[ i ].word ) ) {
1863                                 return 1;
1864                         }
1865
1866                         mo->mo_flags &= ~MEMBEROF_FDANGLING_MASK;
1867                         mo->mo_flags |= dangling_mode[ i ].mask;
1868                         break;
1869
1870                 case MO_DANGLING_ERROR:
1871                         i = verb_to_mask( c->argv[ 1 ], slap_ldap_response_code );
1872                         if ( !BER_BVISNULL( &slap_ldap_response_code[ i ].word ) ) {
1873                                 mo->mo_dangling_err = slap_ldap_response_code[ i ].mask;
1874                         } else if ( lutil_atoix( &mo->mo_dangling_err, c->argv[ 1 ], 0 ) ) {
1875                                 return 1;
1876                         }
1877                         break;
1878
1879                 case MO_REFINT:
1880                         if ( c->value_int ) {
1881                                 mo->mo_flags |= MEMBEROF_FREFINT;
1882
1883                         } else {
1884                                 mo->mo_flags &= ~MEMBEROF_FREFINT;
1885                         }
1886                         break;
1887
1888 #if 0
1889                 case MO_REVERSE:
1890                         if ( c->value_int ) {
1891                                 mo->mo_flags |= MEMBEROF_FREVERSE;
1892
1893                         } else {
1894                                 mo->mo_flags &= ~MEMBEROF_FREVERSE;
1895                         }
1896                         break;
1897 #endif
1898
1899                 case MO_GROUP_OC: {
1900                         ObjectClass     *oc = NULL;
1901
1902                         oc = oc_find( c->argv[ 1 ] );
1903                         if ( oc == NULL ) {
1904                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1905                                         "unable to find group objectClass=\"%s\"",
1906                                         c->argv[ 1 ] );
1907                                 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n",
1908                                         c->log, c->cr_msg, 0 );
1909                                 return 1;
1910                         }
1911
1912                         mo->mo_oc_group = oc;
1913                         memberof_make_group_filter( mo );
1914                         } break;
1915
1916                 case MO_MEMBER_AD: {
1917                         AttributeDescription    *ad = NULL;
1918                         const char              *text = NULL;
1919
1920
1921                         rc = slap_str2ad( c->argv[ 1 ], &ad, &text );
1922                         if ( rc != LDAP_SUCCESS ) {
1923                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1924                                         "unable to find member attribute=\"%s\": %s (%d)",
1925                                         c->argv[ 1 ], text, rc );
1926                                 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n",
1927                                         c->log, c->cr_msg, 0 );
1928                                 return 1;
1929                         }
1930
1931                         if ( !is_at_syntax( ad->ad_type, SLAPD_DN_SYNTAX )              /* e.g. "member" */
1932                                 && !is_at_syntax( ad->ad_type, SLAPD_NAMEUID_SYNTAX ) ) /* e.g. "uniqueMember" */
1933                         {
1934                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1935                                         "member attribute=\"%s\" must either "
1936                                         "have DN (%s) or nameUID (%s) syntax",
1937                                         c->argv[ 1 ], SLAPD_DN_SYNTAX, SLAPD_NAMEUID_SYNTAX );
1938                                 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n",
1939                                         c->log, c->cr_msg, 0 );
1940                                 return 1;
1941                         }
1942
1943                         mo->mo_ad_member = ad;
1944                         } break;
1945
1946                 case MO_MEMBER_OF_AD: {
1947                         AttributeDescription    *ad = NULL;
1948                         const char              *text = NULL;
1949
1950
1951                         rc = slap_str2ad( c->argv[ 1 ], &ad, &text );
1952                         if ( rc != LDAP_SUCCESS ) {
1953                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1954                                         "unable to find memberof attribute=\"%s\": %s (%d)",
1955                                         c->argv[ 1 ], text, rc );
1956                                 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n",
1957                                         c->log, c->cr_msg, 0 );
1958                                 return 1;
1959                         }
1960
1961                         if ( !is_at_syntax( ad->ad_type, SLAPD_DN_SYNTAX )              /* e.g. "member" */
1962                                 && !is_at_syntax( ad->ad_type, SLAPD_NAMEUID_SYNTAX ) ) /* e.g. "uniqueMember" */
1963                         {
1964                                 snprintf( c->cr_msg, sizeof( c->cr_msg ),
1965                                         "memberof attribute=\"%s\" must either "
1966                                         "have DN (%s) or nameUID (%s) syntax",
1967                                         c->argv[ 1 ], SLAPD_DN_SYNTAX, SLAPD_NAMEUID_SYNTAX );
1968                                 Debug( LDAP_DEBUG_CONFIG, "%s: %s.\n",
1969                                         c->log, c->cr_msg, 0 );
1970                                 return 1;
1971                         }
1972
1973                         mo->mo_ad_memberof = ad;
1974                         memberof_make_member_filter( mo );
1975                         } break;
1976
1977                 default:
1978                         assert( 0 );
1979                         return 1;
1980                 }
1981         }
1982
1983         return 0;
1984 }
1985
1986 static int
1987 memberof_db_open(
1988         BackendDB       *be,
1989         ConfigReply     *cr )
1990 {
1991         slap_overinst   *on = (slap_overinst *)be->bd_info;
1992         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
1993
1994         int             rc;
1995         const char      *text = NULL;
1996
1997         if( ! mo->mo_ad_memberof ){
1998                 rc = slap_str2ad( SLAPD_MEMBEROF_ATTR, &mo->mo_ad_memberof, &text );
1999                 if ( rc != LDAP_SUCCESS ) {
2000                         Debug( LDAP_DEBUG_ANY, "memberof_db_open: "
2001                                         "unable to find attribute=\"%s\": %s (%d)\n",
2002                                         SLAPD_MEMBEROF_ATTR, text, rc );
2003                         return rc;
2004                 }
2005         }
2006
2007         if( ! mo->mo_ad_member ){
2008                 rc = slap_str2ad( SLAPD_GROUP_ATTR, &mo->mo_ad_member, &text );
2009                 if ( rc != LDAP_SUCCESS ) {
2010                         Debug( LDAP_DEBUG_ANY, "memberof_db_open: "
2011                                         "unable to find attribute=\"%s\": %s (%d)\n",
2012                                         SLAPD_GROUP_ATTR, text, rc );
2013                         return rc;
2014                 }
2015         }
2016
2017         if( ! mo->mo_oc_group ){
2018                 mo->mo_oc_group = oc_find( SLAPD_GROUP_CLASS );
2019                 if ( mo->mo_oc_group == NULL ) {
2020                         Debug( LDAP_DEBUG_ANY,
2021                                         "memberof_db_open: "
2022                                         "unable to find objectClass=\"%s\"\n",
2023                                         SLAPD_GROUP_CLASS, 0, 0 );
2024                         return 1;
2025                 }
2026         }
2027
2028         if ( BER_BVISNULL( &mo->mo_dn ) && !BER_BVISNULL( &be->be_rootdn ) ) {
2029                 ber_dupbv( &mo->mo_dn, &be->be_rootdn );
2030                 ber_dupbv( &mo->mo_ndn, &be->be_rootndn );
2031         }
2032
2033         if ( BER_BVISNULL( &mo->mo_groupFilterstr ) ) {
2034                 memberof_make_group_filter( mo );
2035         }
2036
2037         if ( BER_BVISNULL( &mo->mo_memberFilterstr ) ) {
2038                 memberof_make_member_filter( mo );
2039         }
2040
2041         return 0;
2042 }
2043
2044 static int
2045 memberof_db_destroy(
2046         BackendDB       *be,
2047         ConfigReply     *cr )
2048 {
2049         slap_overinst   *on = (slap_overinst *)be->bd_info;
2050         memberof_t      *mo = (memberof_t *)on->on_bi.bi_private;
2051
2052         if ( mo ) {
2053                 if ( !BER_BVISNULL( &mo->mo_dn ) ) {
2054                         ber_memfree( mo->mo_dn.bv_val );
2055                         ber_memfree( mo->mo_ndn.bv_val );
2056                 }
2057
2058                 if ( !BER_BVISNULL( &mo->mo_groupFilterstr ) ) {
2059                         ber_memfree( mo->mo_groupFilterstr.bv_val );
2060                 }
2061
2062                 if ( !BER_BVISNULL( &mo->mo_memberFilterstr ) ) {
2063                         ber_memfree( mo->mo_memberFilterstr.bv_val );
2064                 }
2065
2066                 ber_memfree( mo );
2067         }
2068
2069         return 0;
2070 }
2071
2072 /* unused */
2073 static AttributeDescription     *ad_memberOf;
2074
2075 static struct {
2076         char    *desc;
2077         AttributeDescription **adp;
2078 } as[] = {
2079         { "( 1.2.840.113556.1.2.102 "
2080                 "NAME 'memberOf' "
2081                 "DESC 'Group that the entry belongs to' "
2082                 "SYNTAX '1.3.6.1.4.1.1466.115.121.1.12' "
2083                 "EQUALITY distinguishedNameMatch "      /* added */
2084                 "USAGE dSAOperation "                   /* added; questioned */
2085                 /* "NO-USER-MODIFICATION " */           /* add? */
2086                 "X-ORIGIN 'iPlanet Delegated Administrator' )",
2087                 &ad_memberOf },
2088         { NULL }
2089 };
2090
2091 #if SLAPD_OVER_MEMBEROF == SLAPD_MOD_DYNAMIC
2092 static
2093 #endif /* SLAPD_OVER_MEMBEROF == SLAPD_MOD_DYNAMIC */
2094 int
2095 memberof_initialize( void )
2096 {
2097         int                     code, i;
2098
2099         for ( i = 0; as[ i ].desc != NULL; i++ ) {
2100                 code = register_at( as[ i ].desc, as[ i ].adp, 0 );
2101                 if ( code ) {
2102                         Debug( LDAP_DEBUG_ANY,
2103                                 "memberof_initialize: register_at #%d failed\n",
2104                                 i, 0, 0 );
2105                         return code;
2106                 }
2107         }
2108
2109         memberof.on_bi.bi_type = "memberof";
2110
2111         memberof.on_bi.bi_db_init = memberof_db_init;
2112         memberof.on_bi.bi_db_open = memberof_db_open;
2113         memberof.on_bi.bi_db_destroy = memberof_db_destroy;
2114
2115         memberof.on_bi.bi_op_add = memberof_op_add;
2116         memberof.on_bi.bi_op_delete = memberof_op_delete;
2117         memberof.on_bi.bi_op_modify = memberof_op_modify;
2118         memberof.on_bi.bi_op_modrdn = memberof_op_modrdn;
2119
2120         memberof.on_bi.bi_cf_ocs = mo_ocs;
2121
2122         code = config_register_schema( mo_cfg, mo_ocs );
2123         if ( code ) return code;
2124
2125         return overlay_register( &memberof );
2126 }
2127
2128 #if SLAPD_OVER_MEMBEROF == SLAPD_MOD_DYNAMIC
2129 int
2130 init_module( int argc, char *argv[] )
2131 {
2132         return memberof_initialize();
2133 }
2134 #endif /* SLAPD_OVER_MEMBEROF == SLAPD_MOD_DYNAMIC */
2135
2136 #endif /* SLAPD_OVER_MEMBEROF */