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

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