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