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

   1 /* rwm.c - rewrite/remap operations */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2003-2007 The OpenLDAP Foundation.
   6  * Portions Copyright 2003 Pierangelo Masarati.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted only as authorized by the OpenLDAP
  11  * Public License.
  12  *
  13  * A copy of this license is available in the file LICENSE in the
  14  * top-level directory of the distribution or, alternatively, at
  15  * <http://www.OpenLDAP.org/license.html>.
  16  */
  17
  18 #include "portable.h"
  19
  20 #ifdef SLAPD_OVER_RWM
  21
  22 #include <stdio.h>
  23
  24 #include <ac/string.h>
  25
  26 #include "slap.h"
  27 #include "config.h"
  28 #include "lutil.h"
  29 #include "rwm.h"
  30
  31 typedef struct rwm_op_state {
  32         ber_tag_t r_tag;
  33         struct berval ro_dn;
  34         struct berval ro_ndn;
  35         struct berval r_dn;
  36         struct berval r_ndn;
  37         AttributeName *mapped_attrs;
  38         OpRequest o_request;
  39 } rwm_op_state;
  40
  41 static int
  42 rwm_db_destroy( BackendDB *be, ConfigReply *cr );
  43
  44 typedef struct rwm_op_cb {
  45         slap_callback cb;
  46         rwm_op_state ros;
  47 } rwm_op_cb;
  48
  49 static int
  50 rwm_op_cleanup( Operation *op, SlapReply *rs )
  51 {
  52         slap_callback   *cb = op->o_callback;
  53         rwm_op_state *ros = cb->sc_private;
  54
  55         if ( rs->sr_type == REP_RESULT || rs->sr_type == REP_EXTENDED ||
  56                 op->o_abandon || rs->sr_err == SLAPD_ABANDON ) {
  57
  58                 op->o_req_dn = ros->ro_dn;
  59                 op->o_req_ndn = ros->ro_ndn;
  60
  61                 if ( !BER_BVISNULL( &ros->r_dn )
  62                         && ros->r_dn.bv_val != ros->r_ndn.bv_val )
  63                 {
  64                         ch_free( ros->r_dn.bv_val );
  65                         BER_BVZERO( &ros->r_dn );
  66                 }
  67
  68                 if ( !BER_BVISNULL( &ros->r_ndn ) ) {
  69                         ch_free( ros->r_ndn.bv_val );
  70                         BER_BVZERO( &ros->r_ndn );
  71                 }
  72
  73                 switch( ros->r_tag ) {
  74                 case LDAP_REQ_COMPARE:
  75                         if ( op->orc_ava->aa_value.bv_val != ros->orc_ava->aa_value.bv_val )
  76                                 op->o_tmpfree( op->orc_ava->aa_value.bv_val, op->o_tmpmemctx );
  77                         op->orc_ava = ros->orc_ava;
  78                         break;
  79                 case LDAP_REQ_MODIFY:
  80                         slap_mods_free( op->orm_modlist, 1 );
  81                         op->orm_modlist = ros->orm_modlist;
  82                         break;
  83                 case LDAP_REQ_MODRDN:
  84                         if ( op->orr_newSup != ros->orr_newSup ) {
  85                                 ch_free( op->orr_newSup->bv_val );
  86                                 ch_free( op->orr_nnewSup->bv_val );
  87                                 op->o_tmpfree( op->orr_newSup, op->o_tmpmemctx );
  88                                 op->o_tmpfree( op->orr_nnewSup, op->o_tmpmemctx );
  89                                 op->orr_newSup = ros->orr_newSup;
  90                                 op->orr_nnewSup = ros->orr_nnewSup;
  91                         }
  92                         break;
  93                 case LDAP_REQ_SEARCH:
  94                         ch_free( ros->mapped_attrs );
  95                         filter_free_x( op, op->ors_filter );
  96                         ch_free( op->ors_filterstr.bv_val );
  97                         op->ors_attrs = ros->ors_attrs;
  98                         op->ors_filter = ros->ors_filter;
  99                         op->ors_filterstr = ros->ors_filterstr;
 100                         break;
 101                 case LDAP_REQ_EXTENDED:
 102                         if ( op->ore_reqdata != ros->ore_reqdata ) {
 103                                 ber_bvfree( op->ore_reqdata );
 104                                 op->ore_reqdata = ros->ore_reqdata;
 105                         }
 106                         break;
 107                 default:        break;
 108                 }
 109                 op->o_callback = op->o_callback->sc_next;
 110                 op->o_tmpfree( cb, op->o_tmpmemctx );
 111         }
 112
 113         return SLAP_CB_CONTINUE;
 114 }
 115
 116 static rwm_op_cb *
 117 rwm_callback_get( Operation *op, SlapReply *rs )
 118 {
 119         rwm_op_cb       *roc = NULL;
 120
 121         roc = op->o_tmpalloc( sizeof( struct rwm_op_cb ), op->o_tmpmemctx );
 122         roc->cb.sc_cleanup = rwm_op_cleanup;
 123         roc->cb.sc_response = NULL;
 124         roc->cb.sc_next = op->o_callback;
 125         roc->cb.sc_private = &roc->ros;
 126         roc->ros.r_tag = op->o_tag;
 127         roc->ros.ro_dn = op->o_req_dn;
 128         roc->ros.ro_ndn = op->o_req_ndn;
 129         roc->ros.o_request = op->o_request;
 130         BER_BVZERO( &roc->ros.r_dn );
 131         BER_BVZERO( &roc->ros.r_ndn );
 132
 133         return roc;
 134 }
 135
 136
 137 static int
 138 rwm_op_dn_massage( Operation *op, SlapReply *rs, void *cookie,
 139         rwm_op_state *ros )
 140 {
 141         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 142         struct ldaprwmap        *rwmap =
 143                         (struct ldaprwmap *)on->on_bi.bi_private;
 144
 145         struct berval           dn = BER_BVNULL,
 146                                 ndn = BER_BVNULL;
 147         int                     rc = 0;
 148         dncookie                dc;
 149
 150         /*
 151          * Rewrite the dn if needed
 152          */
 153         dc.rwmap = rwmap;
 154         dc.conn = op->o_conn;
 155         dc.rs = rs;
 156         dc.ctx = (char *)cookie;
 157
 158         /* NOTE: in those cases where only the ndn is available,
 159          * and the caller sets op->o_req_dn = op->o_req_ndn,
 160          * only rewrite the op->o_req_ndn and use it as
 161          * op->o_req_dn as well */
 162         ndn = op->o_req_ndn;
 163         if ( op->o_req_dn.bv_val != op->o_req_ndn.bv_val ) {
 164                 dn = op->o_req_dn;
 165                 rc = rwm_dn_massage_pretty_normalize( &dc, &op->o_req_dn, &dn, &ndn );
 166         } else {
 167                 rc = rwm_dn_massage_normalize( &dc, &op->o_req_ndn, &ndn );
 168         }
 169
 170         if ( rc != LDAP_SUCCESS ) {
 171                 return rc;
 172         }
 173
 174         if ( ( op->o_req_dn.bv_val != op->o_req_ndn.bv_val && dn.bv_val == op->o_req_dn.bv_val )
 175                         || ndn.bv_val == op->o_req_ndn.bv_val )
 176         {
 177                 return LDAP_SUCCESS;
 178         }
 179
 180         if ( op->o_req_dn.bv_val != op->o_req_ndn.bv_val ) {
 181                 op->o_req_dn = dn;
 182                 ros->r_dn = dn;
 183         } else {
 184                 op->o_req_dn = ndn;
 185         }
 186         op->o_req_ndn = ndn;
 187         ros->r_ndn = ndn;
 188
 189         return LDAP_SUCCESS;
 190 }
 191
 192 static int
 193 rwm_op_add( Operation *op, SlapReply *rs )
 194 {
 195         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 196         struct ldaprwmap        *rwmap =
 197                         (struct ldaprwmap *)on->on_bi.bi_private;
 198
 199         int                     rc,
 200                                 i;
 201         Attribute               **ap = NULL;
 202         char                    *olddn = op->o_req_dn.bv_val;
 203         int                     isupdate;
 204
 205         rwm_op_cb               *roc = rwm_callback_get( op, rs );
 206
 207         rc = rwm_op_dn_massage( op, rs, "addDN", &roc->ros );
 208         if ( rc != LDAP_SUCCESS ) {
 209                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 210                 send_ldap_error( op, rs, rc, "addDN massage error" );
 211                 return -1;
 212         }
 213
 214         if ( olddn != op->o_req_dn.bv_val ) {
 215                 ber_bvreplace( &op->ora_e->e_name, &op->o_req_dn );
 216                 ber_bvreplace( &op->ora_e->e_nname, &op->o_req_ndn );
 217         }
 218
 219         /* Count number of attributes in entry */
 220         isupdate = be_shadow_update( op );
 221         for ( i = 0, ap = &op->oq_add.rs_e->e_attrs; *ap; ) {
 222                 Attribute       *a;
 223
 224                 if ( (*ap)->a_desc == slap_schema.si_ad_objectClass ||
 225                                 (*ap)->a_desc == slap_schema.si_ad_structuralObjectClass )
 226                 {
 227                         int             j, last;
 228
 229                         for ( last = 0; !BER_BVISNULL( &(*ap)->a_vals[ last ] ); last++ )
 230                                         /* count values */ ;
 231                         last--;
 232                         for ( j = 0; !BER_BVISNULL( &(*ap)->a_vals[ j ] ); j++ ) {
 233                                 struct ldapmapping      *mapping = NULL;
 234
 235                                 ( void )rwm_mapping( &rwmap->rwm_oc, &(*ap)->a_vals[ j ],
 236                                                 &mapping, RWM_MAP );
 237                                 if ( mapping == NULL ) {
 238                                         if ( rwmap->rwm_at.drop_missing ) {
 239                                                 /* FIXME: we allow to remove objectClasses as well;
 240                                                  * if the resulting entry is inconsistent, that's
 241                                                  * the relayed database's business...
 242                                                  */
 243                                                 ch_free( (*ap)->a_vals[ j ].bv_val );
 244                                                 if ( last > j ) {
 245                                                         (*ap)->a_vals[ j ] = (*ap)->a_vals[ last ];
 246                                                 }
 247                                                 BER_BVZERO( &(*ap)->a_vals[ last ] );
 248                                                 last--;
 249                                                 j--;
 250                                         }
 251
 252                                 } else {
 253                                         ch_free( (*ap)->a_vals[ j ].bv_val );
 254                                         ber_dupbv( &(*ap)->a_vals[ j ], &mapping->m_dst );
 255                                 }
 256                         }
 257
 258                 } else if ( !isupdate && !get_relax( op ) && (*ap)->a_desc->ad_type->sat_no_user_mod )
 259                 {
 260                         goto next_attr;
 261
 262                 } else {
 263                         struct ldapmapping      *mapping = NULL;
 264
 265                         ( void )rwm_mapping( &rwmap->rwm_at, &(*ap)->a_desc->ad_cname,
 266                                         &mapping, RWM_MAP );
 267                         if ( mapping == NULL ) {
 268                                 if ( rwmap->rwm_at.drop_missing ) {
 269                                         goto cleanup_attr;
 270                                 }
 271                         }
 272
 273                         if ( (*ap)->a_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 274                                         || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 275                         {
 276                                 /*
 277                                  * FIXME: rewrite could fail; in this case
 278                                  * the operation should give up, right?
 279                                  */
 280                                 rc = rwm_dnattr_rewrite( op, rs, "addAttrDN",
 281                                                 (*ap)->a_vals,
 282                                                 (*ap)->a_nvals ? &(*ap)->a_nvals : NULL );
 283                                 if ( rc ) {
 284                                         goto cleanup_attr;
 285                                 }
 286
 287                         } else if ( (*ap)->a_desc == slap_schema.si_ad_ref ) {
 288                                 rc = rwm_referral_rewrite( op, rs, "referralAttrDN",
 289                                                 (*ap)->a_vals,
 290                                                 (*ap)->a_nvals ? &(*ap)->a_nvals : NULL );
 291                                 if ( rc != LDAP_SUCCESS ) {
 292                                         goto cleanup_attr;
 293                                 }
 294                         }
 295
 296                         if ( mapping != NULL ) {
 297                                 assert( mapping->m_dst_ad != NULL );
 298                                 (*ap)->a_desc = mapping->m_dst_ad;
 299                         }
 300                 }
 301
 302 next_attr:;
 303                 ap = &(*ap)->a_next;
 304                 continue;
 305
 306 cleanup_attr:;
 307                 /* FIXME: leaking attribute/values? */
 308                 a = *ap;
 309
 310                 *ap = (*ap)->a_next;
 311                 attr_free( a );
 312         }
 313
 314         op->o_callback = &roc->cb;
 315
 316         return SLAP_CB_CONTINUE;
 317 }
 318
 319 static int
 320 rwm_conn_init( BackendDB *be, Connection *conn )
 321 {
 322         slap_overinst           *on = (slap_overinst *) be->bd_info;
 323         struct ldaprwmap        *rwmap =
 324                         (struct ldaprwmap *)on->on_bi.bi_private;
 325
 326         ( void )rewrite_session_init( rwmap->rwm_rw, conn );
 327
 328         return SLAP_CB_CONTINUE;
 329 }
 330
 331 static int
 332 rwm_conn_destroy( BackendDB *be, Connection *conn )
 333 {
 334         slap_overinst           *on = (slap_overinst *) be->bd_info;
 335         struct ldaprwmap        *rwmap =
 336                         (struct ldaprwmap *)on->on_bi.bi_private;
 337
 338         ( void )rewrite_session_delete( rwmap->rwm_rw, conn );
 339
 340         return SLAP_CB_CONTINUE;
 341 }
 342
 343 static int
 344 rwm_op_bind( Operation *op, SlapReply *rs )
 345 {
 346         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 347         int                     rc;
 348
 349         rwm_op_cb               *roc = rwm_callback_get( op, rs );
 350
 351         rc = rwm_op_dn_massage( op, rs, "bindDN", &roc->ros );
 352         if ( rc != LDAP_SUCCESS ) {
 353                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 354                 send_ldap_error( op, rs, rc, "bindDN massage error" );
 355                 return -1;
 356         }
 357
 358         op->o_callback = &roc->cb;
 359
 360         return SLAP_CB_CONTINUE;
 361 }
 362
 363 static int
 364 rwm_op_unbind( Operation *op, SlapReply *rs )
 365 {
 366         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 367         struct ldaprwmap        *rwmap =
 368                         (struct ldaprwmap *)on->on_bi.bi_private;
 369
 370         rewrite_session_delete( rwmap->rwm_rw, op->o_conn );
 371
 372         return SLAP_CB_CONTINUE;
 373 }
 374
 375 static int
 376 rwm_op_compare( Operation *op, SlapReply *rs )
 377 {
 378         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 379         struct ldaprwmap        *rwmap =
 380                         (struct ldaprwmap *)on->on_bi.bi_private;
 381
 382         int                     rc;
 383         struct berval           mapped_vals[2] = { BER_BVNULL, BER_BVNULL };
 384
 385         rwm_op_cb               *roc = rwm_callback_get( op, rs );
 386
 387         rc = rwm_op_dn_massage( op, rs, "compareDN", &roc->ros );
 388         if ( rc != LDAP_SUCCESS ) {
 389                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 390                 send_ldap_error( op, rs, rc, "compareDN massage error" );
 391                 return -1;
 392         }
 393
 394         /* if the attribute is an objectClass, try to remap its value */
 395         if ( op->orc_ava->aa_desc == slap_schema.si_ad_objectClass
 396                         || op->orc_ava->aa_desc == slap_schema.si_ad_structuralObjectClass )
 397         {
 398                 rwm_map( &rwmap->rwm_oc, &op->orc_ava->aa_value,
 399                                 &mapped_vals[0], RWM_MAP );
 400                 if ( BER_BVISNULL( &mapped_vals[0] ) || BER_BVISEMPTY( &mapped_vals[0] ) )
 401                 {
 402                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 403                         send_ldap_error( op, rs, LDAP_OTHER, "compare objectClass map error" );
 404                         return -1;
 405
 406                 } else if ( mapped_vals[0].bv_val != op->orc_ava->aa_value.bv_val ) {
 407                         ber_dupbv_x( &op->orc_ava->aa_value, &mapped_vals[0],
 408                                 op->o_tmpmemctx );
 409                 }
 410
 411         } else {
 412                 struct ldapmapping      *mapping = NULL;
 413                 AttributeDescription    *ad = op->orc_ava->aa_desc;
 414
 415                 ( void )rwm_mapping( &rwmap->rwm_at, &op->orc_ava->aa_desc->ad_cname,
 416                                 &mapping, RWM_MAP );
 417                 if ( mapping == NULL ) {
 418                         if ( rwmap->rwm_at.drop_missing ) {
 419                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 420                                 send_ldap_error( op, rs, LDAP_OTHER, "compare attributeType map error" );
 421                                 return -1;
 422                         }
 423
 424                 } else {
 425                         assert( mapping->m_dst_ad != NULL );
 426                         ad = mapping->m_dst_ad;
 427                 }
 428
 429                 if ( op->orc_ava->aa_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 430                                 || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 431                 {
 432                         struct berval   *mapped_valsp[2];
 433
 434                         mapped_valsp[0] = &mapped_vals[0];
 435                         mapped_valsp[1] = &mapped_vals[1];
 436
 437                         mapped_vals[0] = op->orc_ava->aa_value;
 438
 439                         rc = rwm_dnattr_rewrite( op, rs, "compareAttrDN", NULL, mapped_valsp );
 440
 441                         if ( rc != LDAP_SUCCESS ) {
 442                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 443                                 send_ldap_error( op, rs, rc, "compareAttrDN massage error" );
 444                                 return -1;
 445                         }
 446
 447                         if ( mapped_vals[ 0 ].bv_val != op->orc_ava->aa_value.bv_val ) {
 448                                 /* NOTE: if we get here, rwm_dnattr_rewrite()
 449                                  * already freed the old value, so now
 450                                  * it's invalid */
 451                                 ber_dupbv_x( &op->orc_ava->aa_value, &mapped_vals[0],
 452                                         op->o_tmpmemctx );
 453                                 ber_memfree_x( mapped_vals[ 0 ].bv_val, NULL );
 454                         }
 455                 }
 456                 op->orc_ava->aa_desc = ad;
 457         }
 458
 459         op->o_callback = &roc->cb;
 460
 461         return SLAP_CB_CONTINUE;
 462 }
 463
 464 static int
 465 rwm_op_delete( Operation *op, SlapReply *rs )
 466 {
 467         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 468         int                     rc;
 469
 470         rwm_op_cb               *roc = rwm_callback_get( op, rs );
 471
 472         rc = rwm_op_dn_massage( op, rs, "deleteDN", &roc->ros );
 473         if ( rc != LDAP_SUCCESS ) {
 474                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 475                 send_ldap_error( op, rs, rc, "deleteDN massage error" );
 476                 return -1;
 477         }
 478
 479         op->o_callback = &roc->cb;
 480
 481         return SLAP_CB_CONTINUE;
 482 }
 483
 484 static int
 485 rwm_op_modify( Operation *op, SlapReply *rs )
 486 {
 487         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 488         struct ldaprwmap        *rwmap =
 489                         (struct ldaprwmap *)on->on_bi.bi_private;
 490
 491         int                     isupdate;
 492         Modifications           **mlp;
 493         int                     rc;
 494
 495         rwm_op_cb               *roc = rwm_callback_get( op, rs );
 496
 497         rc = rwm_op_dn_massage( op, rs, "modifyDN", &roc->ros );
 498         if ( rc != LDAP_SUCCESS ) {
 499                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 500                 send_ldap_error( op, rs, rc, "modifyDN massage error" );
 501                 return -1;
 502         }
 503
 504         isupdate = be_shadow_update( op );
 505         for ( mlp = &op->orm_modlist; *mlp; ) {
 506                 int                     is_oc = 0;
 507                 Modifications           *ml = *mlp;
 508                 struct ldapmapping      *mapping = NULL;
 509
 510                 /* ml points to a temporary mod until needs duplication */
 511                 if ( ml->sml_desc == slap_schema.si_ad_objectClass
 512                                 || ml->sml_desc == slap_schema.si_ad_structuralObjectClass )
 513                 {
 514                         is_oc = 1;
 515
 516                 } else if ( !isupdate && !get_relax( op ) && ml->sml_desc->ad_type->sat_no_user_mod  )
 517                 {
 518                         ml = ch_malloc( sizeof( Modifications ) );
 519                         *ml = **mlp;
 520                         if ( (*mlp)->sml_values ) {
 521                                 ber_bvarray_dup_x( &ml->sml_values, (*mlp)->sml_values, NULL );
 522                                 if ( (*mlp)->sml_nvalues ) {
 523                                         ber_bvarray_dup_x( &ml->sml_nvalues, (*mlp)->sml_nvalues, NULL );
 524                                 }
 525                         }
 526                         *mlp = ml;
 527                         goto next_mod;
 528
 529                 } else {
 530                         int                     drop_missing;
 531
 532                         drop_missing = rwm_mapping( &rwmap->rwm_at,
 533                                         &ml->sml_desc->ad_cname,
 534                                         &mapping, RWM_MAP );
 535                         if ( drop_missing || ( mapping != NULL && BER_BVISNULL( &mapping->m_dst ) ) )
 536                         {
 537                                 goto cleanup_mod;
 538                         }
 539                 }
 540
 541                 /* duplicate the modlist */
 542                 ml = ch_malloc( sizeof( Modifications ));
 543                 *ml = **mlp;
 544                 *mlp = ml;
 545
 546                 if ( ml->sml_values != NULL ) {
 547                         int i, num;
 548                         struct berval *bva;
 549
 550                         for ( num = 0; !BER_BVISNULL( &ml->sml_values[ num ] ); num++ )
 551                                 /* count values */ ;
 552
 553                         bva = ch_malloc( (num+1) * sizeof( struct berval ));
 554                         for (i=0; i<num; i++)
 555                                 ber_dupbv( &bva[i], &ml->sml_values[i] );
 556                         BER_BVZERO( &bva[i] );
 557                         ml->sml_values = bva;
 558
 559                         if ( ml->sml_nvalues ) {
 560                                 bva = ch_malloc( (num+1) * sizeof( struct berval ));
 561                                 for (i=0; i<num; i++)
 562                                         ber_dupbv( &bva[i], &ml->sml_nvalues[i] );
 563                                 BER_BVZERO( &bva[i] );
 564                                 ml->sml_nvalues = bva;
 565                         }
 566
 567                         if ( is_oc ) {
 568                                 int     last, j;
 569
 570                                 last = num-1;
 571
 572                                 for ( j = 0; !BER_BVISNULL( &ml->sml_values[ j ] ); j++ ) {
 573                                         struct ldapmapping      *oc_mapping = NULL;
 574
 575                                         ( void )rwm_mapping( &rwmap->rwm_oc, &ml->sml_values[ j ],
 576                                                         &oc_mapping, RWM_MAP );
 577                                         if ( oc_mapping == NULL ) {
 578                                                 if ( rwmap->rwm_at.drop_missing ) {
 579                                                         /* FIXME: we allow to remove objectClasses as well;
 580                                                          * if the resulting entry is inconsistent, that's
 581                                                          * the relayed database's business...
 582                                                          */
 583                                                         if ( last > j ) {
 584                                                                 ch_free( ml->sml_values[ j ].bv_val );
 585                                                                 ml->sml_values[ j ] = ml->sml_values[ last ];
 586                                                         }
 587                                                         BER_BVZERO( &ml->sml_values[ last ] );
 588                                                         last--;
 589                                                         j--;
 590                                                 }
 591
 592                                         } else {
 593                                                 ch_free( ml->sml_values[ j ].bv_val );
 594                                                 ber_dupbv( &ml->sml_values[ j ], &oc_mapping->m_dst );
 595                                         }
 596                                 }
 597
 598                         } else {
 599                                 if ( ml->sml_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 600                                                 || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 601                                 {
 602                                         rc = rwm_dnattr_rewrite( op, rs, "modifyAttrDN",
 603                                                         ml->sml_values,
 604                                                         ml->sml_nvalues ? &ml->sml_nvalues : NULL );
 605
 606                                 } else if ( ml->sml_desc == slap_schema.si_ad_ref ) {
 607                                         rc = rwm_referral_rewrite( op, rs,
 608                                                         "referralAttrDN",
 609                                                         ml->sml_values,
 610                                                         ml->sml_nvalues ? &ml->sml_nvalues : NULL );
 611                                         if ( rc != LDAP_SUCCESS ) {
 612                                                 goto cleanup_mod;
 613                                         }
 614                                 }
 615
 616                                 if ( rc != LDAP_SUCCESS ) {
 617                                         goto cleanup_mod;
 618                                 }
 619                         }
 620                 }
 621
 622 next_mod:;
 623                 if ( mapping != NULL ) {
 624                         /* use new attribute description */
 625                         assert( mapping->m_dst_ad != NULL );
 626                         ml->sml_desc = mapping->m_dst_ad;
 627                 }
 628
 629                 mlp = &ml->sml_next;
 630                 continue;
 631
 632 cleanup_mod:;
 633                 ml = *mlp;
 634                 *mlp = (*mlp)->sml_next;
 635                 slap_mod_free( &ml->sml_mod, 0 );
 636                 free( ml );
 637         }
 638
 639         op->o_callback = &roc->cb;
 640
 641         return SLAP_CB_CONTINUE;
 642 }
 643
 644 static int
 645 rwm_op_modrdn( Operation *op, SlapReply *rs )
 646 {
 647         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 648         struct ldaprwmap        *rwmap =
 649                         (struct ldaprwmap *)on->on_bi.bi_private;
 650
 651         int                     rc;
 652
 653         rwm_op_cb               *roc = rwm_callback_get( op, rs );
 654
 655         if ( op->orr_newSup ) {
 656                 dncookie        dc;
 657                 struct berval   nnewSup = BER_BVNULL;
 658                 struct berval   newSup = BER_BVNULL;
 659
 660                 /*
 661                  * Rewrite the new superior, if defined and required
 662                  */
 663                 dc.rwmap = rwmap;
 664                 dc.conn = op->o_conn;
 665                 dc.rs = rs;
 666                 dc.ctx = "newSuperiorDN";
 667                 newSup = *op->orr_newSup;
 668                 nnewSup = *op->orr_nnewSup;
 669                 rc = rwm_dn_massage_pretty_normalize( &dc, op->orr_newSup, &newSup, &nnewSup );
 670                 if ( rc != LDAP_SUCCESS ) {
 671                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 672                         send_ldap_error( op, rs, rc, "newSuperiorDN massage error" );
 673                         return -1;
 674                 }
 675
 676                 if ( op->orr_newSup->bv_val != newSup.bv_val ) {
 677                         op->orr_newSup = op->o_tmpalloc( sizeof( struct berval ),
 678                                 op->o_tmpmemctx );
 679                         op->orr_nnewSup = op->o_tmpalloc( sizeof( struct berval ),
 680                                 op->o_tmpmemctx );
 681                         *op->orr_newSup = newSup;
 682                         *op->orr_nnewSup = nnewSup;
 683                 }
 684         }
 685
 686         /*
 687          * Rewrite the dn, if needed
 688          */
 689         rc = rwm_op_dn_massage( op, rs, "renameDN", &roc->ros );
 690         if ( rc != LDAP_SUCCESS ) {
 691                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 692                 send_ldap_error( op, rs, rc, "renameDN massage error" );
 693                 if ( op->orr_newSup != roc->ros.orr_newSup ) {
 694                         ch_free( op->orr_newSup->bv_val );
 695                         ch_free( op->orr_nnewSup->bv_val );
 696                         op->o_tmpfree( op->orr_newSup, op->o_tmpmemctx );
 697                         op->o_tmpfree( op->orr_nnewSup, op->o_tmpmemctx );
 698                         op->orr_newSup = roc->ros.orr_newSup;
 699                         op->orr_nnewSup = roc->ros.orr_nnewSup;
 700                 }
 701                 return -1;
 702         }
 703
 704         /* TODO: rewrite newRDN, attribute types,
 705          * values of DN-valued attributes ... */
 706
 707         op->o_callback = &roc->cb;
 708
 709         return SLAP_CB_CONTINUE;
 710 }
 711
 712
 713 static int
 714 rwm_swap_attrs( Operation *op, SlapReply *rs )
 715 {
 716         slap_callback   *cb = op->o_callback;
 717         rwm_op_state *ros = cb->sc_private;
 718
 719         rs->sr_attrs = ros->ors_attrs;
 720
 721         /* other overlays might have touched op->ors_attrs,
 722          * so we restore the original version here, otherwise
 723          * attribute-mapping might fail */
 724         op->ors_attrs = ros->mapped_attrs;
 725
 726         return SLAP_CB_CONTINUE;
 727 }
 728
 729 static int
 730 rwm_op_search( Operation *op, SlapReply *rs )
 731 {
 732         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 733         struct ldaprwmap        *rwmap =
 734                         (struct ldaprwmap *)on->on_bi.bi_private;
 735
 736         int                     rc;
 737         dncookie                dc;
 738
 739         struct berval           fstr = BER_BVNULL;
 740         Filter                  *f = NULL;
 741
 742         AttributeName           *an = NULL;
 743
 744         char                    *text = NULL;
 745
 746         rwm_op_cb               *roc = rwm_callback_get( op, rs );
 747
 748         rc = rewrite_session_var_set( rwmap->rwm_rw, op->o_conn,
 749                 "searchFilter", op->ors_filterstr.bv_val );
 750         if ( rc == LDAP_SUCCESS )
 751                 rc = rwm_op_dn_massage( op, rs, "searchDN", &roc->ros );
 752         if ( rc != LDAP_SUCCESS ) {
 753                 text = "searchDN massage error";
 754                 goto error_return;
 755         }
 756
 757         /*
 758          * Rewrite the dn if needed
 759          */
 760         dc.rwmap = rwmap;
 761         dc.conn = op->o_conn;
 762         dc.rs = rs;
 763         dc.ctx = "searchFilterAttrDN";
 764
 765         rc = rwm_filter_map_rewrite( op, &dc, op->ors_filter, &fstr );
 766         if ( rc != LDAP_SUCCESS ) {
 767                 text = "searchFilter/searchFilterAttrDN massage error";
 768                 goto error_return;
 769         }
 770
 771         f = str2filter_x( op, fstr.bv_val );
 772
 773         if ( f == NULL ) {
 774                 text = "massaged filter parse error";
 775                 goto error_return;
 776         }
 777
 778         op->ors_filter = f;
 779         op->ors_filterstr = fstr;
 780
 781         rc = rwm_map_attrnames( &rwmap->rwm_at, &rwmap->rwm_oc,
 782                         op->ors_attrs, &an, RWM_MAP );
 783         if ( rc != LDAP_SUCCESS ) {
 784                 text = "attribute list mapping error";
 785                 goto error_return;
 786         }
 787
 788         op->ors_attrs = an;
 789         /* store the mapped Attributes for later usage, in
 790          * the case that other overlays change op->ors_attrs */
 791         roc->ros.mapped_attrs = an;
 792         roc->cb.sc_response = rwm_swap_attrs;
 793
 794         op->o_callback = &roc->cb;
 795
 796         return SLAP_CB_CONTINUE;
 797
 798 error_return:;
 799         if ( an != NULL ) {
 800                 ch_free( an );
 801         }
 802
 803         if ( f != NULL ) {
 804                 filter_free_x( op, f );
 805         }
 806
 807         if ( !BER_BVISNULL( &fstr ) ) {
 808                 ch_free( fstr.bv_val );
 809         }
 810
 811         op->oq_search = roc->ros.oq_search;
 812
 813         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 814         send_ldap_error( op, rs, rc, text );
 815
 816         return -1;
 817
 818 }
 819
 820 static int
 821 rwm_exop_passwd( Operation *op, SlapReply *rs )
 822 {
 823         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 824         int                     rc;
 825         rwm_op_cb *roc;
 826
 827         struct berval   id = BER_BVNULL,
 828                         pwold = BER_BVNULL,
 829                         pwnew = BER_BVNULL;
 830         BerElement *ber = NULL;
 831
 832         if ( !BER_BVISNULL( &op->o_req_ndn ) ) {
 833                 return LDAP_SUCCESS;
 834         }
 835
 836         if ( !SLAP_ISGLOBALOVERLAY( op->o_bd ) ) {
 837                 rs->sr_err = LDAP_OTHER;
 838                 return rs->sr_err;
 839         }
 840
 841         rs->sr_err = slap_passwd_parse( op->ore_reqdata, &id,
 842                 &pwold, &pwnew, &rs->sr_text );
 843         if ( rs->sr_err != LDAP_SUCCESS ) {
 844                 return rs->sr_err;
 845         }
 846
 847         if ( !BER_BVISNULL( &id ) ) {
 848                 char idNul = id.bv_val[id.bv_len];
 849                 id.bv_val[id.bv_len] = '\0';
 850                 rs->sr_err = dnPrettyNormal( NULL, &id, &op->o_req_dn,
 851                                 &op->o_req_ndn, op->o_tmpmemctx );
 852                 id.bv_val[id.bv_len] = idNul;
 853                 if ( rs->sr_err != LDAP_SUCCESS ) {
 854                         rs->sr_text = "Invalid DN";
 855                         return rs->sr_err;
 856                 }
 857
 858         } else {
 859                 ber_dupbv_x( &op->o_req_dn, &op->o_dn, op->o_tmpmemctx );
 860                 ber_dupbv_x( &op->o_req_ndn, &op->o_ndn, op->o_tmpmemctx );
 861         }
 862
 863         roc = rwm_callback_get( op, rs );
 864
 865         rc = rwm_op_dn_massage( op, rs, "extendedDN", &roc->ros );
 866         if ( rc != LDAP_SUCCESS ) {
 867                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 868                 send_ldap_error( op, rs, rc, "extendedDN massage error" );
 869                 return -1;
 870         }
 871
 872         ber = ber_alloc_t( LBER_USE_DER );
 873         if ( !ber ) {
 874                 rs->sr_err = LDAP_OTHER;
 875                 rs->sr_text = "No memory";
 876                 return rs->sr_err;
 877         }
 878         ber_printf( ber, "{" );
 879         if ( !BER_BVISNULL( &id )) {
 880                 ber_printf( ber, "tO", LDAP_TAG_EXOP_MODIFY_PASSWD_ID,
 881                         &op->o_req_dn );
 882         }
 883         if ( !BER_BVISNULL( &pwold )) {
 884                 ber_printf( ber, "tO", LDAP_TAG_EXOP_MODIFY_PASSWD_OLD, &pwold );
 885         }
 886         if ( !BER_BVISNULL( &pwnew )) {
 887                 ber_printf( ber, "tO", LDAP_TAG_EXOP_MODIFY_PASSWD_NEW, &pwnew );
 888         }
 889         ber_printf( ber, "N}" );
 890         ber_flatten( ber, &op->ore_reqdata );
 891         ber_free( ber, 1 );
 892
 893         op->o_callback = &roc->cb;
 894
 895         return SLAP_CB_CONTINUE;
 896 }
 897
 898 static struct exop {
 899         struct berval   oid;
 900         BI_op_extended  *extended;
 901 } exop_table[] = {
 902         { BER_BVC(LDAP_EXOP_MODIFY_PASSWD),     rwm_exop_passwd },
 903         { BER_BVNULL, NULL }
 904 };
 905
 906 static int
 907 rwm_extended( Operation *op, SlapReply *rs )
 908 {
 909         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 910         int                     rc;
 911         rwm_op_cb *roc;
 912
 913         int     i;
 914
 915         for ( i = 0; exop_table[i].extended != NULL; i++ ) {
 916                 if ( bvmatch( &exop_table[i].oid, &op->oq_extended.rs_reqoid ) )
 917                 {
 918                         rc = exop_table[i].extended( op, rs );
 919                         switch ( rc ) {
 920                         case LDAP_SUCCESS:
 921                                 break;
 922
 923                         case SLAP_CB_CONTINUE:
 924                         case SLAPD_ABANDON:
 925                                 return rc;
 926
 927                         default:
 928                                 send_ldap_result( op, rs );
 929                                 return rc;
 930                         }
 931                         break;
 932                 }
 933         }
 934
 935         roc = rwm_callback_get( op, rs );
 936
 937         rc = rwm_op_dn_massage( op, rs, "extendedDN", &roc->ros );
 938         if ( rc != LDAP_SUCCESS ) {
 939                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 940                 send_ldap_error( op, rs, rc, "extendedDN massage error" );
 941                 return -1;
 942         }
 943
 944         /* TODO: rewrite/map extended data ? ... */
 945         op->o_callback = &roc->cb;
 946
 947         return SLAP_CB_CONTINUE;
 948 }
 949
 950 static int
 951 rwm_matched( Operation *op, SlapReply *rs )
 952 {
 953         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 954         struct ldaprwmap        *rwmap =
 955                         (struct ldaprwmap *)on->on_bi.bi_private;
 956
 957         struct berval           dn, mdn;
 958         dncookie                dc;
 959         int                     rc;
 960
 961         if ( rs->sr_matched == NULL ) {
 962                 return SLAP_CB_CONTINUE;
 963         }
 964
 965         dc.rwmap = rwmap;
 966         dc.conn = op->o_conn;
 967         dc.rs = rs;
 968         dc.ctx = "matchedDN";
 969         ber_str2bv( rs->sr_matched, 0, 0, &dn );
 970         mdn = dn;
 971         rc = rwm_dn_massage_pretty( &dc, &dn, &mdn );
 972         if ( rc != LDAP_SUCCESS ) {
 973                 rs->sr_err = rc;
 974                 rs->sr_text = "Rewrite error";
 975                 return 1;
 976         }
 977
 978         if ( mdn.bv_val != dn.bv_val ) {
 979                 if ( rs->sr_flags & REP_MATCHED_MUSTBEFREED ) {
 980                         ch_free( (void *)rs->sr_matched );
 981
 982                 } else {
 983                         rs->sr_flags |= REP_MATCHED_MUSTBEFREED;
 984                 }
 985                 rs->sr_matched = mdn.bv_val;
 986         }
 987
 988         return SLAP_CB_CONTINUE;
 989 }
 990
 991 static int
 992 rwm_attrs( Operation *op, SlapReply *rs, Attribute** a_first, int stripEntryDN )
 993 {
 994         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 995         struct ldaprwmap        *rwmap =
 996                         (struct ldaprwmap *)on->on_bi.bi_private;
 997
 998         dncookie                dc;
 999         int                     rc;
1000         Attribute               **ap;
1001         int                     isupdate;
1002         int                     check_duplicate_attrs = 0;
1003
1004         /*
1005          * Rewrite the dn attrs, if needed
1006          */
1007         dc.rwmap = rwmap;
1008         dc.conn = op->o_conn;
1009         dc.rs = NULL;
1010
1011         /* FIXME: the entries are in the remote mapping form;
1012          * so we need to select those attributes we are willing
1013          * to return, and remap them accordingly */
1014
1015         /* FIXME: in principle, one could map an attribute
1016          * on top of another, which already exists.
1017          * As such, in the end there might exist more than
1018          * one instance of an attribute.
1019          * We should at least check if this occurs, and issue
1020          * an error (because multiple instances of attrs in
1021          * response are not valid), or merge the values (what
1022          * about duplicate values?) */
1023         isupdate = be_shadow_update( op );
1024         for ( ap = a_first; *ap; ) {
1025                 struct ldapmapping      *mapping = NULL;
1026                 int                     drop_missing;
1027                 int                     last = -1;
1028                 Attribute               *a;
1029
1030                 if ( SLAP_OPATTRS( rs->sr_attr_flags ) && is_at_operational( (*ap)->a_desc->ad_type ) )
1031                 {
1032                         /* go on */ ;
1033
1034                 } else {
1035                         if ( op->ors_attrs != NULL &&
1036                                         !SLAP_USERATTRS( rs->sr_attr_flags ) &&
1037                                         !ad_inlist( (*ap)->a_desc, op->ors_attrs ) )
1038                         {
1039                                 goto cleanup_attr;
1040                         }
1041
1042                         drop_missing = rwm_mapping( &rwmap->rwm_at,
1043                                         &(*ap)->a_desc->ad_cname, &mapping, RWM_REMAP );
1044                         if ( drop_missing || ( mapping != NULL && BER_BVISEMPTY( &mapping->m_dst ) ) )
1045                         {
1046                                 goto cleanup_attr;
1047                         }
1048                         if ( mapping != NULL ) {
1049                                 assert( mapping->m_dst_ad != NULL );
1050
1051                                 /* try to normalize mapped Attributes if the original
1052                                  * AttributeType was not normalized */
1053                                 if ((rwmap->rwm_flags & RWM_F_NORMALIZE_MAPPED_ATTRS) &&
1054                                         (!(*ap)->a_desc->ad_type->sat_equality ||
1055                                         !(*ap)->a_desc->ad_type->sat_equality->smr_normalize) &&
1056                                         mapping->m_dst_ad->ad_type->sat_equality &&
1057                                         mapping->m_dst_ad->ad_type->sat_equality->smr_normalize )
1058                                 {
1059                                         int i = 0;
1060                                         for ( last = 0; !BER_BVISNULL( &(*ap)->a_vals[last] ); last++ )
1061                                                 /* just count */ ;
1062
1063                                         if ( last )
1064                                         {
1065                                                 (*ap)->a_nvals = ch_malloc( (last+1) * sizeof(struct berval) );
1066
1067                                                 for ( i = 0; !BER_BVISNULL( &(*ap)->a_vals[i]); i++ ) {
1068                                                         int             rc;
1069                                                         /*
1070                                                          * check that each value is valid per syntax
1071                                                          * and pretty if appropriate
1072                                                          */
1073                                                         rc = mapping->m_dst_ad->ad_type->sat_equality->smr_normalize(
1074                                                                 SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
1075                                                                 mapping->m_dst_ad->ad_type->sat_syntax,
1076                                                                 mapping->m_dst_ad->ad_type->sat_equality,
1077                                                                 &(*ap)->a_vals[i], &(*ap)->a_nvals[i],
1078                                                                 NULL );
1079
1080                                                         if ( rc != LDAP_SUCCESS ) {
1081                                                                 BER_BVZERO( &(*ap)->a_nvals[i] );
1082                                                         }
1083                                                 }
1084                                                 BER_BVZERO( &(*ap)->a_nvals[i] );
1085                                         }
1086                                 }
1087
1088                                 /* rewrite the attribute description */
1089                                 (*ap)->a_desc = mapping->m_dst_ad;
1090
1091                                 /* will need to check for duplicate attrs */
1092                                 check_duplicate_attrs++;
1093                         }
1094                 }
1095
1096                 if ( (*ap)->a_desc == slap_schema.si_ad_entryDN ) {
1097                         if ( stripEntryDN ) {
1098                                 /* will be generated by frontend */
1099                                 goto cleanup_attr;
1100                         }
1101
1102                 } else if ( !isupdate
1103                         && !get_relax( op )
1104                         && (*ap)->a_desc->ad_type->sat_no_user_mod
1105                         && (*ap)->a_desc->ad_type != slap_schema.si_at_undefined )
1106                 {
1107                         goto next_attr;
1108                 }
1109
1110                 if ( last == -1 ) { /* not yet counted */
1111                         for ( last = 0; !BER_BVISNULL( &(*ap)->a_vals[last] ); last++ )
1112                                 /* just count */ ;
1113                 }
1114
1115                 if ( last == 0 ) {
1116                         /* empty? leave it in place because of attrsonly and vlv */
1117                         goto next_attr;
1118                 }
1119                 last--;
1120
1121                 if ( (*ap)->a_desc == slap_schema.si_ad_objectClass
1122                                 || (*ap)->a_desc == slap_schema.si_ad_structuralObjectClass )
1123                 {
1124                         struct berval   *bv;
1125
1126                         for ( bv = (*ap)->a_vals; !BER_BVISNULL( bv ); bv++ ) {
1127                                 struct berval   mapped;
1128
1129                                 rwm_map( &rwmap->rwm_oc, &bv[0], &mapped, RWM_REMAP );
1130                                 if ( BER_BVISNULL( &mapped ) || BER_BVISEMPTY( &mapped ) ) {
1131 remove_oc:;
1132                                         ch_free( bv[0].bv_val );
1133                                         BER_BVZERO( &bv[0] );
1134                                         if ( &(*ap)->a_vals[last] > &bv[0] ) {
1135                                                 bv[0] = (*ap)->a_vals[last];
1136                                                 BER_BVZERO( &(*ap)->a_vals[last] );
1137                                         }
1138                                         last--;
1139                                         bv--;
1140
1141                                 } else if ( mapped.bv_val != bv[0].bv_val ) {
1142                                         int     i;
1143
1144                                         for ( i = 0; !BER_BVISNULL( &(*ap)->a_vals[ i ] ); i++ ) {
1145                                                 if ( &(*ap)->a_vals[ i ] == bv ) {
1146                                                         continue;
1147                                                 }
1148
1149                                                 if ( ber_bvstrcasecmp( &mapped, &(*ap)->a_vals[ i ] ) == 0 ) {
1150                                                         break;
1151                                                 }
1152                                         }
1153
1154                                         if ( !BER_BVISNULL( &(*ap)->a_vals[ i ] ) ) {
1155                                                 goto remove_oc;
1156                                         }
1157
1158                                         /*
1159                                          * FIXME: after LBER_FREEing
1160                                          * the value is replaced by
1161                                          * ch_alloc'ed memory
1162                                          */
1163                                         ber_bvreplace( &bv[0], &mapped );
1164
1165                                         /* FIXME: will need to check
1166                                          * if the structuralObjectClass
1167                                          * changed */
1168                                 }
1169                         }
1170
1171                 /*
1172                  * It is necessary to try to rewrite attributes with
1173                  * dn syntax because they might be used in ACLs as
1174                  * members of groups; since ACLs are applied to the
1175                  * rewritten stuff, no dn-based subject clause could
1176                  * be used at the ldap backend side (see
1177                  * http://www.OpenLDAP.org/faq/data/cache/452.html)
1178                  * The problem can be overcome by moving the dn-based
1179                  * ACLs to the target directory server, and letting
1180                  * everything pass thru the ldap backend. */
1181                 /* FIXME: handle distinguishedName-like syntaxes, like
1182                  * nameAndOptionalUID */
1183                 } else if ( (*ap)->a_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
1184                                 || ( mapping != NULL && mapping->m_src_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
1185                 {
1186                         dc.ctx = "searchAttrDN";
1187                         rc = rwm_dnattr_result_rewrite( &dc, (*ap)->a_vals );
1188                         if ( rc != LDAP_SUCCESS ) {
1189                                 goto cleanup_attr;
1190                         }
1191
1192                 } else if ( (*ap)->a_desc == slap_schema.si_ad_ref ) {
1193                         dc.ctx = "searchAttrDN";
1194                         rc = rwm_referral_result_rewrite( &dc, (*ap)->a_vals );
1195                         if ( rc != LDAP_SUCCESS ) {
1196                                 goto cleanup_attr;
1197                         }
1198                 }
1199
1200
1201 next_attr:;
1202                 ap = &(*ap)->a_next;
1203                 continue;
1204
1205 cleanup_attr:;
1206                 a = *ap;
1207                 *ap = (*ap)->a_next;
1208
1209                 attr_free( a );
1210         }
1211
1212         /* only check if some mapping occurred */
1213         if ( check_duplicate_attrs ) {
1214                 for ( ap = a_first; *ap != NULL; ap = &(*ap)->a_next ) {
1215                         Attribute       **tap;
1216
1217                         for ( tap = &(*ap)->a_next; *tap != NULL; ) {
1218                                 if ( (*tap)->a_desc == (*ap)->a_desc ) {
1219                                         Entry           e = { 0 };
1220                                         Modification    mod = { 0 };
1221                                         const char      *text = NULL;
1222                                         char            textbuf[ SLAP_TEXT_BUFLEN ];
1223                                         Attribute       *next = (*tap)->a_next;
1224
1225                                         BER_BVSTR( &e.e_name, "" );
1226                                         BER_BVSTR( &e.e_nname, "" );
1227                                         e.e_attrs = *ap;
1228                                         mod.sm_op = LDAP_MOD_ADD;
1229                                         mod.sm_desc = (*ap)->a_desc;
1230                                         mod.sm_type = mod.sm_desc->ad_cname;
1231                                         mod.sm_values = (*tap)->a_vals;
1232                                         mod.sm_nvalues = (*tap)->a_nvals;
1233
1234                                         (void)modify_add_values( &e, &mod,
1235                                                 /* permissive */ 1,
1236                                                 &text, textbuf, sizeof( textbuf ) );
1237
1238                                         /* should not insert new attrs! */
1239                                         assert( e.e_attrs == *ap );
1240
1241                                         attr_free( *tap );
1242                                         *tap = next;
1243
1244                                 } else {
1245                                         tap = &(*tap)->a_next;
1246                                 }
1247                         }
1248                 }
1249         }
1250
1251         return 0;
1252 }
1253
1254 static int
1255 rwm_send_entry( Operation *op, SlapReply *rs )
1256 {
1257         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
1258         struct ldaprwmap        *rwmap =
1259                         (struct ldaprwmap *)on->on_bi.bi_private;
1260
1261         Entry                   *e = NULL;
1262         slap_mask_t             flags;
1263         struct berval           dn = BER_BVNULL,
1264                                 ndn = BER_BVNULL;
1265         dncookie                dc;
1266         int                     rc;
1267
1268         assert( rs->sr_entry != NULL );
1269
1270         /*
1271          * Rewrite the dn of the result, if needed
1272          */
1273         dc.rwmap = rwmap;
1274         dc.conn = op->o_conn;
1275         dc.rs = NULL;
1276         dc.ctx = "searchEntryDN";
1277
1278         e = rs->sr_entry;
1279         flags = rs->sr_flags;
1280         if ( !( rs->sr_flags & REP_ENTRY_MODIFIABLE ) ) {
1281                 /* FIXME: all we need to duplicate are:
1282                  * - dn
1283                  * - ndn
1284                  * - attributes that are requested
1285                  * - no values if attrsonly is set
1286                  */
1287
1288                 e = entry_dup( e );
1289                 if ( e == NULL ) {
1290                         rc = LDAP_NO_MEMORY;
1291                         goto fail;
1292                 }
1293
1294                 flags &= ~REP_ENTRY_MUSTRELEASE;
1295                 flags |= ( REP_ENTRY_MODIFIABLE | REP_ENTRY_MUSTBEFREED );
1296         }
1297
1298         /*
1299          * Note: this may fail if the target host(s) schema differs
1300          * from the one known to the meta, and a DN with unknown
1301          * attributes is returned.
1302          */
1303         dn = e->e_name;
1304         ndn = e->e_nname;
1305         rc = rwm_dn_massage_pretty_normalize( &dc, &e->e_name, &dn, &ndn );
1306         if ( rc != LDAP_SUCCESS ) {
1307                 rc = 1;
1308                 goto fail;
1309         }
1310
1311         if ( e->e_name.bv_val != dn.bv_val ) {
1312                 ch_free( e->e_name.bv_val );
1313                 ch_free( e->e_nname.bv_val );
1314
1315                 e->e_name = dn;
1316                 e->e_nname = ndn;
1317         }
1318
1319         /* TODO: map entry attribute types, objectclasses
1320          * and dn-valued attribute values */
1321
1322         /* FIXME: the entries are in the remote mapping form;
1323          * so we need to select those attributes we are willing
1324          * to return, and remap them accordingly */
1325         (void)rwm_attrs( op, rs, &e->e_attrs, 1 );
1326
1327         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1328                 be_entry_release_rw( op, rs->sr_entry, 0 );
1329         }
1330
1331         rs->sr_entry = e;
1332         rs->sr_flags = flags;
1333
1334         return SLAP_CB_CONTINUE;
1335
1336 fail:;
1337         if ( e != NULL && e != rs->sr_entry ) {
1338                 if ( e->e_name.bv_val == dn.bv_val ) {
1339                         BER_BVZERO( &e->e_name );
1340                 }
1341
1342                 if ( e->e_nname.bv_val == ndn.bv_val ) {
1343                         BER_BVZERO( &e->e_nname );
1344                 }
1345
1346                 entry_free( e );
1347         }
1348
1349         if ( !BER_BVISNULL( &dn ) ) {
1350                 ch_free( dn.bv_val );
1351         }
1352
1353         if ( !BER_BVISNULL( &ndn ) ) {
1354                 ch_free( ndn.bv_val );
1355         }
1356
1357         return rc;
1358 }
1359
1360 static int
1361 rwm_operational( Operation *op, SlapReply *rs )
1362 {
1363         /* FIXME: the entries are in the remote mapping form;
1364          * so we need to select those attributes we are willing
1365          * to return, and remap them accordingly */
1366         if ( rs->sr_operational_attrs ) {
1367                 rwm_attrs( op, rs, &rs->sr_operational_attrs, 1 );
1368         }
1369
1370         return SLAP_CB_CONTINUE;
1371 }
1372
1373 #if 0
1374 /* don't use this; it cannot be reverted, and leaves op->o_req_dn
1375  * rewritten for subsequent operations; fine for plain suffixmassage,
1376  * but destroys everything else */
1377 static int
1378 rwm_chk_referrals( Operation *op, SlapReply *rs )
1379 {
1380         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
1381         int                     rc;
1382
1383         rc = rwm_op_dn_massage( op, rs, "referralCheckDN" );
1384         if ( rc != LDAP_SUCCESS ) {
1385                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1386                 send_ldap_error( op, rs, rc, "referralCheckDN massage error" );
1387                 return -1;
1388         }
1389
1390         return SLAP_CB_CONTINUE;
1391 }
1392 #endif
1393
1394 static int
1395 rwm_rw_config(
1396         BackendDB       *be,
1397         const char      *fname,
1398         int             lineno,
1399         int             argc,
1400         char            **argv )
1401 {
1402         slap_overinst           *on = (slap_overinst *) be->bd_info;
1403         struct ldaprwmap        *rwmap =
1404                         (struct ldaprwmap *)on->on_bi.bi_private;
1405
1406         return rewrite_parse( rwmap->rwm_rw,
1407                                 fname, lineno, argc, argv );
1408
1409         return 0;
1410 }
1411
1412 static int
1413 rwm_suffixmassage_config(
1414         BackendDB       *be,
1415         const char      *fname,
1416         int             lineno,
1417         int             argc,
1418         char            **argv )
1419 {
1420         slap_overinst           *on = (slap_overinst *) be->bd_info;
1421         struct ldaprwmap        *rwmap =
1422                         (struct ldaprwmap *)on->on_bi.bi_private;
1423
1424         struct berval           bvnc, nvnc, pvnc, brnc, nrnc, prnc;
1425         int                     massaged;
1426         int                     rc;
1427
1428         /*
1429          * syntax:
1430          *
1431          *      suffixmassage [<suffix>] <massaged suffix>
1432          *
1433          * the [<suffix>] field must be defined as a valid suffix
1434          * for the current database;
1435          * the <massaged suffix> shouldn't have already been
1436          * defined as a valid suffix for the current server
1437          */
1438         if ( argc == 2 ) {
1439                 if ( be->be_suffix == NULL ) {
1440                         fprintf( stderr, "%s: line %d: "
1441                                        " \"suffixMassage [<suffix>]"
1442                                        " <massaged suffix>\" without "
1443                                        "<suffix> part requires database "
1444                                        "suffix be defined first.\n",
1445                                 fname, lineno );
1446                         return 1;
1447                 }
1448                 bvnc = be->be_suffix[ 0 ];
1449                 massaged = 1;
1450
1451         } else if ( argc == 3 ) {
1452                 ber_str2bv( argv[ 1 ], 0, 0, &bvnc );
1453                 massaged = 2;
1454
1455         } else  {
1456                 fprintf( stderr, "%s: line %d: syntax is"
1457                                " \"suffixMassage [<suffix>]"
1458                                " <massaged suffix>\"\n",
1459                         fname, lineno );
1460                 return 1;
1461         }
1462
1463         if ( dnPrettyNormal( NULL, &bvnc, &pvnc, &nvnc, NULL ) != LDAP_SUCCESS ) {
1464                 fprintf( stderr, "%s: line %d: suffix DN %s is invalid\n",
1465                         fname, lineno, bvnc.bv_val );
1466                 return 1;
1467         }
1468
1469         ber_str2bv( argv[ massaged ], 0, 0, &brnc );
1470         if ( dnPrettyNormal( NULL, &brnc, &prnc, &nrnc, NULL ) != LDAP_SUCCESS ) {
1471                 fprintf( stderr, "%s: line %d: suffix DN %s is invalid\n",
1472                                 fname, lineno, brnc.bv_val );
1473                 free( nvnc.bv_val );
1474                 free( pvnc.bv_val );
1475                 return 1;
1476         }
1477
1478         /*
1479          * The suffix massaging is emulated
1480          * by means of the rewrite capabilities
1481          */
1482         rc = rwm_suffix_massage_config( rwmap->rwm_rw,
1483                         &pvnc, &nvnc, &prnc, &nrnc );
1484         free( nvnc.bv_val );
1485         free( pvnc.bv_val );
1486         free( nrnc.bv_val );
1487         free( prnc.bv_val );
1488
1489         return rc;
1490 }
1491
1492 static int
1493 rwm_m_config(
1494         BackendDB       *be,
1495         const char      *fname,
1496         int             lineno,
1497         int             argc,
1498         char            **argv )
1499 {
1500         slap_overinst           *on = (slap_overinst *) be->bd_info;
1501         struct ldaprwmap        *rwmap =
1502                         (struct ldaprwmap *)on->on_bi.bi_private;
1503
1504         /* objectclass/attribute mapping */
1505         return rwm_map_config( &rwmap->rwm_oc,
1506                         &rwmap->rwm_at,
1507                         fname, lineno, argc, argv );
1508 }
1509
1510 static int
1511 rwm_response( Operation *op, SlapReply *rs )
1512 {
1513         slap_overinst           *on = (slap_overinst *)op->o_bd->bd_info;
1514         struct ldaprwmap        *rwmap =
1515                         (struct ldaprwmap *)on->on_bi.bi_private;
1516
1517         int             rc;
1518
1519         if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH ) {
1520                 return rwm_send_entry( op, rs );
1521         }
1522
1523         switch( op->o_tag ) {
1524         case LDAP_REQ_SEARCH:
1525         case LDAP_REQ_BIND:
1526         case LDAP_REQ_ADD:
1527         case LDAP_REQ_DELETE:
1528         case LDAP_REQ_MODRDN:
1529         case LDAP_REQ_MODIFY:
1530         case LDAP_REQ_COMPARE:
1531         case LDAP_REQ_EXTENDED:
1532                 if ( rs->sr_ref ) {
1533                         dncookie                dc;
1534
1535                         /*
1536                          * Rewrite the dn of the referrals, if needed
1537                          */
1538                         dc.rwmap = rwmap;
1539                         dc.conn = op->o_conn;
1540                         dc.rs = NULL;
1541                         dc.ctx = "referralDN";
1542                         rc = rwm_referral_result_rewrite( &dc, rs->sr_ref );
1543                         if ( rc != LDAP_SUCCESS ) {
1544                                 rc = 1;
1545                                 break;
1546                         }
1547                 }
1548                 rc = rwm_matched( op, rs );
1549                 break;
1550
1551         default:
1552                 rc = SLAP_CB_CONTINUE;
1553                 break;
1554         }
1555
1556         return rc;
1557 }
1558
1559 static int
1560 rwm_db_config(
1561         BackendDB       *be,
1562         const char      *fname,
1563         int             lineno,
1564         int             argc,
1565         char            **argv )
1566 {
1567         slap_overinst           *on = (slap_overinst *) be->bd_info;
1568         struct ldaprwmap        *rwmap =
1569                         (struct ldaprwmap *)on->on_bi.bi_private;
1570
1571         int             rc = 0;
1572         char            *argv0 = NULL;
1573
1574         if ( strncasecmp( argv[ 0 ], "rwm-", STRLENOF( "rwm-" ) ) == 0 ) {
1575                 argv0 = argv[ 0 ];
1576                 argv[ 0 ] = &argv0[ STRLENOF( "rwm-" ) ];
1577         }
1578
1579         if ( strncasecmp( argv[0], "rewrite", STRLENOF("rewrite") ) == 0 ) {
1580                 rc = rwm_rw_config( be, fname, lineno, argc, argv );
1581
1582         } else if ( strcasecmp( argv[0], "map" ) == 0 ) {
1583                 rc = rwm_m_config( be, fname, lineno, argc, argv );
1584
1585         } else if ( strcasecmp( argv[0], "suffixmassage" ) == 0 ) {
1586                 rc = rwm_suffixmassage_config( be, fname, lineno, argc, argv );
1587
1588         } else if ( strcasecmp( argv[0], "t-f-support" ) == 0 ) {
1589                 if ( argc != 2 ) {
1590                         fprintf( stderr,
1591                 "%s: line %d: \"t-f-support {no|yes|discover}\" needs 1 argument.\n",
1592                                         fname, lineno );
1593                         return( 1 );
1594                 }
1595
1596                 if ( strcasecmp( argv[ 1 ], "no" ) == 0 ) {
1597                         rwmap->rwm_flags &= ~(RWM_F_SUPPORT_T_F_MASK2);
1598
1599                 } else if ( strcasecmp( argv[ 1 ], "yes" ) == 0 ) {
1600                         rwmap->rwm_flags |= RWM_F_SUPPORT_T_F;
1601
1602                 /* TODO: not implemented yet */
1603                 } else if ( strcasecmp( argv[ 1 ], "discover" ) == 0 ) {
1604                         fprintf( stderr,
1605                 "%s: line %d: \"discover\" not supported yet "
1606                 "in \"t-f-support {no|yes|discover}\".\n",
1607                                         fname, lineno );
1608                         return( 1 );
1609 #if 0
1610                         rwmap->rwm_flags |= RWM_F_SUPPORT_T_F_DISCOVER;
1611 #endif
1612
1613                 } else {
1614                         fprintf( stderr,
1615         "%s: line %d: unknown value \"%s\" for \"t-f-support {no|yes|discover}\".\n",
1616                                 fname, lineno, argv[ 1 ] );
1617                         return 1;
1618                 }
1619         } else if ( strcasecmp( argv[0], "normalize-mapped-attrs" ) ==  0 ) {
1620                 if ( argc !=2 ) {
1621                         fprintf( stderr,
1622                 "%s: line %d: \"normalize-mapped-attrs {no|yes}\" needs 1 argument.\n",
1623                                         fname, lineno );
1624                         return( 1 );
1625                 }
1626
1627                 if ( strcasecmp( argv[ 1 ], "no" ) == 0 ) {
1628                         rwmap->rwm_flags &= ~(RWM_F_NORMALIZE_MAPPED_ATTRS);
1629
1630                 } else if ( strcasecmp( argv[ 1 ], "yes" ) == 0 ) {
1631                         rwmap->rwm_flags |= RWM_F_NORMALIZE_MAPPED_ATTRS;
1632                 }
1633
1634         } else {
1635                 rc = SLAP_CONF_UNKNOWN;
1636         }
1637
1638         if ( argv0 ) {
1639                 argv[ 0 ] = argv0;
1640         }
1641
1642         return rc;
1643 }
1644
1645 /*
1646  * dynamic configuration...
1647  */
1648
1649 enum {
1650         /* rewrite */
1651         RWM_CF_REWRITE = 1,
1652         RWM_CF_SUFFIXMASSAGE,
1653
1654         /* map */
1655         RWM_CF_MAP,
1656         RWM_CF_T_F_SUPPORT,
1657         RWM_CF_NORMALIZE_MAPPED,
1658
1659         RWM_CF_LAST
1660 };
1661
1662 static slap_verbmasks t_f_mode[] = {
1663         { BER_BVC( "yes" ),             RWM_F_SUPPORT_T_F },
1664         { BER_BVC( "discover" ),        RWM_F_SUPPORT_T_F_DISCOVER },
1665         { BER_BVC( "no" ),              RWM_F_NONE },
1666         { BER_BVNULL,                   0 }
1667 };
1668
1669 static ConfigDriver rwm_cf_gen;
1670
1671 static ConfigTable rwmcfg[] = {
1672         { "rwm-rewrite", "rewrite",
1673                 2, 0, STRLENOF("rwm-rewrite"),
1674                 ARG_MAGIC|ARG_QUOTE|RWM_CF_REWRITE, rwm_cf_gen,
1675                 "( OLcfgOvAt:16.1 NAME 'olcRwmRewrite' "
1676                         "DESC 'Rewrites strings' "
1677                         "EQUALITY caseIgnoreMatch "
1678                         "SYNTAX OMsDirectoryString "
1679                         "X-ORDERED 'VALUES' )",
1680                 NULL, NULL },
1681
1682         { "rwm-suffixmassage", "[virtual]> <real",
1683                 2, 3, 0, ARG_MAGIC|RWM_CF_SUFFIXMASSAGE, rwm_cf_gen,
1684                 NULL, NULL, NULL },
1685
1686         { "rwm-t-f-support", "true|false|discover",
1687                 2, 2, 0, ARG_MAGIC|RWM_CF_T_F_SUPPORT, rwm_cf_gen,
1688                 "( OLcfgOvAt:16.2 NAME 'olcRwmTFSupport' "
1689                         "DESC 'Absolute filters support' "
1690                         "SYNTAX OMsDirectoryString "
1691                         "SINGLE-VALUE )",
1692                 NULL, NULL },
1693
1694         { "rwm-map", "{objectClass|attribute}",
1695                 2, 4, 0, ARG_MAGIC|RWM_CF_MAP, rwm_cf_gen,
1696                 "( OLcfgOvAt:16.3 NAME 'olcRwmMap' "
1697                         "DESC 'maps attributes/objectClasses' "
1698                         "SYNTAX OMsDirectoryString "
1699                         "X-ORDERED 'VALUES' )",
1700                 NULL, NULL },
1701
1702         { "rwm-normalize-mapped-attrs", "true|false",
1703                 2, 2, 0, ARG_MAGIC|ARG_ON_OFF|RWM_CF_NORMALIZE_MAPPED, rwm_cf_gen,
1704                 "( OLcfgOvAt:16.4 NAME 'olcRwmNormalizeMapped' "
1705                         "DESC 'Normalize mapped attributes/objectClasses' "
1706                         "SYNTAX OMsBoolean "
1707                         "SINGLE-VALUE )",
1708                 NULL, NULL },
1709
1710         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
1711 };
1712
1713 static ConfigOCs rwmocs[] = {
1714         { "( OLcfgOvOc:16.1 "
1715                 "NAME 'olcRwmConfig' "
1716                 "DESC 'Rewrite/remap configuration' "
1717                 "SUP olcOverlayConfig "
1718                 "MAY ( "
1719                         "olcRwmRewrite $ "
1720                         "olcRwmTFSupport $ "
1721                         "olcRwmMap $ "
1722                         "olcRwmNormalizeMapped "
1723                         ") )",
1724                 Cft_Overlay, rwmcfg, NULL, NULL },
1725         { NULL, 0, NULL }
1726 };
1727
1728 static void
1729 slap_rewrite_unparse( BerVarray in, BerVarray *out )
1730 {
1731         int             i;
1732         BerVarray       bva = NULL;
1733         char            ibuf[32], *ptr;
1734         struct berval   idx;
1735
1736         assert( in != NULL );
1737
1738         for ( i = 0; !BER_BVISNULL( &in[i] ); i++ )
1739                 /* count'em */ ;
1740
1741         if ( i == 0 ) {
1742                 return;
1743         }
1744
1745         idx.bv_val = ibuf;
1746
1747         bva = ch_malloc( ( i + 1 ) * sizeof(struct berval) );
1748         BER_BVZERO( &bva[ 0 ] );
1749
1750         for ( i = 0; !BER_BVISNULL( &in[i] ); i++ ) {
1751                 idx.bv_len = snprintf( idx.bv_val, sizeof( ibuf ), "{%d}", i );
1752                 if ( idx.bv_len >= sizeof( ibuf ) ) {
1753                         ber_bvarray_free( bva );
1754                         return;
1755                 }
1756
1757                 bva[i].bv_len = idx.bv_len + in[i].bv_len;
1758                 bva[i].bv_val = ch_malloc( bva[i].bv_len + 1 );
1759                 ptr = lutil_strcopy( bva[i].bv_val, ibuf );
1760                 ptr = lutil_strcopy( ptr, in[i].bv_val );
1761                 *ptr = '\0';
1762                 BER_BVZERO( &bva[ i + 1 ] );
1763         }
1764
1765         *out = bva;
1766 }
1767
1768 static int
1769 rwm_cf_gen( ConfigArgs *c )
1770 {
1771         slap_overinst           *on = (slap_overinst *)c->bi;
1772         struct ldaprwmap        *rwmap =
1773                         (struct ldaprwmap *)on->on_bi.bi_private;
1774
1775         BackendDB               db;
1776         char                    *argv0;
1777         int                     rc = 0;
1778
1779         db = *c->be;
1780         db.bd_info = c->bi;
1781
1782         if ( c->op == SLAP_CONFIG_EMIT ) {
1783                 struct berval   bv = BER_BVNULL;
1784
1785                 switch ( c->type ) {
1786                 case RWM_CF_REWRITE:
1787                         if ( rwmap->rwm_bva_rewrite == NULL ) {
1788                                 rc = 1;
1789
1790                         } else {
1791                                 slap_rewrite_unparse( rwmap->rwm_bva_rewrite, &c->rvalue_vals );
1792                                 if ( !c->rvalue_vals ) {
1793                                         rc = 1;
1794                                 }
1795                         }
1796                         break;
1797
1798                 case RWM_CF_T_F_SUPPORT:
1799                         enum_to_verb( t_f_mode, (rwmap->rwm_flags & RWM_F_SUPPORT_T_F_MASK2), &bv );
1800                         if ( BER_BVISNULL( &bv ) ) {
1801                                 /* there's something wrong... */
1802                                 assert( 0 );
1803                                 rc = 1;
1804
1805                         } else {
1806                                 value_add_one( &c->rvalue_vals, &bv );
1807                         }
1808                         break;
1809
1810                 case RWM_CF_MAP:
1811                         if ( rwmap->rwm_bva_map == NULL ) {
1812                                 rc = 1;
1813
1814                         } else {
1815                                 value_add( &c->rvalue_vals, rwmap->rwm_bva_map );
1816                         }
1817                         break;
1818
1819                 case RWM_CF_NORMALIZE_MAPPED:
1820                         c->value_int = ( rwmap->rwm_flags & RWM_F_NORMALIZE_MAPPED_ATTRS );
1821                         break;
1822
1823                 default:
1824                         assert( 0 );
1825                         rc = 1;
1826                 }
1827
1828                 return rc;
1829
1830         } else if ( c->op == LDAP_MOD_DELETE ) {
1831                 switch ( c->type ) {
1832                 case RWM_CF_REWRITE:
1833                         if ( c->valx >= 0 ) {
1834                                 /* single modification is not allowed */
1835                                 rc = 1;
1836
1837                         } else if ( rwmap->rwm_rw != NULL ) {
1838                                 rewrite_info_delete( &rwmap->rwm_rw );
1839                                 assert( rwmap->rwm_rw == NULL );
1840
1841                                 ber_bvarray_free( rwmap->rwm_bva_rewrite );
1842                                 rwmap->rwm_bva_rewrite = NULL;
1843                         }
1844                         break;
1845
1846                 case RWM_CF_T_F_SUPPORT:
1847                         rwmap->rwm_flags &= ~RWM_F_SUPPORT_T_F_MASK2;
1848                         break;
1849
1850                 case RWM_CF_MAP:
1851                         if ( c->valx >= 0 ) {
1852                                 /* single modification is not allowed */
1853                                 rc = 1;
1854
1855                         } else {
1856                                 avl_free( rwmap->rwm_oc.remap, rwm_mapping_dst_free );
1857                                 avl_free( rwmap->rwm_oc.map, rwm_mapping_free );
1858                                 avl_free( rwmap->rwm_at.remap, rwm_mapping_dst_free );
1859                                 avl_free( rwmap->rwm_at.map, rwm_mapping_free );
1860
1861                                 rwmap->rwm_oc.remap = NULL;
1862                                 rwmap->rwm_oc.map = NULL;
1863                                 rwmap->rwm_at.remap = NULL;
1864                                 rwmap->rwm_at.map = NULL;
1865
1866                                 ber_bvarray_free( rwmap->rwm_bva_map );
1867                                 rwmap->rwm_bva_map = NULL;
1868                         }
1869                         break;
1870
1871                 case RWM_CF_NORMALIZE_MAPPED:
1872                         rwmap->rwm_flags &= ~RWM_F_NORMALIZE_MAPPED_ATTRS;
1873                         break;
1874
1875                 default:
1876                         return 1;
1877                 }
1878                 return rc;
1879         }
1880
1881         switch ( c->type ) {
1882         case RWM_CF_REWRITE:
1883                 argv0 = c->argv[ 0 ];
1884                 c->argv[ 0 ] += STRLENOF( "rwm-" );
1885                 rc = rwm_rw_config( &db, c->fname, c->lineno, c->argc, c->argv );
1886                 c->argv[ 0 ] = argv0;
1887                 if ( rc ) {
1888                         return 1;
1889
1890                 } else {
1891                         char            *line;
1892                         struct berval   bv;
1893
1894                         line = ldap_charray2str( c->argv, "\" \"" );
1895                         if ( line != NULL ) {
1896                                 int     len = strlen( c->argv[ 0 ] );
1897
1898                                 ber_str2bv( line, 0, 0, &bv );
1899                                 AC_MEMCPY( &bv.bv_val[ len ], &bv.bv_val[ len + 1 ],
1900                                         bv.bv_len - ( len + 1 ) );
1901                                 bv.bv_val[ bv.bv_len - 1 ] = '"';
1902                                 ber_bvarray_add( &rwmap->rwm_bva_rewrite, &bv );
1903                         }
1904                 }
1905                 break;
1906
1907         case RWM_CF_SUFFIXMASSAGE:
1908                 argv0 = c->argv[ 0 ];
1909                 c->argv[ 0 ] += STRLENOF( "rwm-" );
1910                 rc = rwm_suffixmassage_config( &db, c->fname, c->lineno, c->argc, c->argv );
1911                 c->argv[ 0 ] = argv0;
1912                 if ( rc ) {
1913                         return 1;
1914
1915                 } else {
1916                         char            *line;
1917                         struct berval   bv;
1918
1919                         /* FIXME: not optimal; in fact, this keeps track
1920                          * of the fact that a set of rules was added
1921                          * using the rwm-suffixmassage shortcut, but the
1922                          * rules are not clarified */
1923
1924                         line = ldap_charray2str( c->argv, "\" \"" );
1925                         if ( line != NULL ) {
1926                                 int     len = strlen( c->argv[ 0 ] );
1927
1928                                 ber_str2bv( line, 0, 0, &bv );
1929                                 AC_MEMCPY( &bv.bv_val[ len ], &bv.bv_val[ len + 1 ],
1930                                         bv.bv_len - ( len + 1 ) );
1931                                 bv.bv_val[ bv.bv_len - 1 ] = '"';
1932                                 ber_bvarray_add( &rwmap->rwm_bva_rewrite, &bv );
1933                         }
1934                 }
1935                 break;
1936
1937         case RWM_CF_T_F_SUPPORT:
1938                 rc = verb_to_mask( c->argv[ 1 ], t_f_mode );
1939                 if ( BER_BVISNULL( &t_f_mode[ rc ].word ) ) {
1940                         return 1;
1941                 }
1942
1943                 rwmap->rwm_flags &= ~RWM_F_SUPPORT_T_F_MASK2;
1944                 rwmap->rwm_flags |= t_f_mode[ rc ].mask;
1945                 rc = 0;
1946                 break;
1947
1948         case RWM_CF_MAP:
1949                 argv0 = c->argv[ 0 ];
1950                 c->argv[ 0 ] += STRLENOF( "rwm-" );
1951                 rc = rwm_m_config( &db, c->fname, c->lineno, c->argc, c->argv );
1952                 c->argv[ 0 ] = argv0;
1953                 if ( rc ) {
1954                         return 1;
1955
1956                 } else {
1957                         char            *line;
1958                         struct berval   bv;
1959
1960                         line = ldap_charray2str( &c->argv[ 1 ], " " );
1961                         if ( line != NULL ) {
1962                                 ber_str2bv( line, 0, 0, &bv );
1963                                 ber_bvarray_add( &rwmap->rwm_bva_map, &bv );
1964                         }
1965                 }
1966                 break;
1967
1968         case RWM_CF_NORMALIZE_MAPPED:
1969                 if ( c->value_int ) {
1970                         rwmap->rwm_flags |= RWM_F_NORMALIZE_MAPPED_ATTRS;
1971                 } else {
1972                         rwmap->rwm_flags &= ~RWM_F_NORMALIZE_MAPPED_ATTRS;
1973                 }
1974                 break;
1975
1976         default:
1977                 assert( 0 );
1978                 return 1;
1979         }
1980
1981         return rc;
1982 }
1983
1984 static int
1985 rwm_db_init(
1986         BackendDB       *be,
1987         ConfigReply     *cr )
1988 {
1989         slap_overinst           *on = (slap_overinst *) be->bd_info;
1990         struct ldaprwmap        *rwmap;
1991         char                    *rargv[ 3 ];
1992         int                     rc = 0;
1993
1994         rwmap = (struct ldaprwmap *)ch_calloc( 1, sizeof( struct ldaprwmap ) );
1995
1996         rwmap->rwm_rw = rewrite_info_init( REWRITE_MODE_USE_DEFAULT );
1997         if ( rwmap->rwm_rw == NULL ) {
1998                 rc = -1;
1999                 goto error_return;
2000         }
2001
2002         /* this rewriteContext by default must be null;
2003          * rules can be added if required */
2004         rargv[ 0 ] = "rewriteContext";
2005         rargv[ 1 ] = "searchFilter";
2006         rargv[ 2 ] = NULL;
2007         rewrite_parse( rwmap->rwm_rw, "<suffix massage>", 1, 2, rargv );
2008
2009         rargv[ 0 ] = "rewriteContext";
2010         rargv[ 1 ] = "default";
2011         rargv[ 2 ] = NULL;
2012         rewrite_parse( rwmap->rwm_rw, "<suffix massage>", 2, 2, rargv );
2013
2014 error_return:;
2015         on->on_bi.bi_private = (void *)rwmap;
2016
2017         if ( rc ) {
2018                 (void)rwm_db_destroy( be, NULL );
2019         }
2020
2021         return rc;
2022 }
2023
2024 static int
2025 rwm_db_destroy(
2026         BackendDB       *be,
2027         ConfigReply     *cr )
2028 {
2029         slap_overinst   *on = (slap_overinst *) be->bd_info;
2030         int             rc = 0;
2031
2032         if ( on->on_bi.bi_private ) {
2033                 struct ldaprwmap        *rwmap =
2034                         (struct ldaprwmap *)on->on_bi.bi_private;
2035
2036                 if ( rwmap->rwm_rw ) {
2037                         rewrite_info_delete( &rwmap->rwm_rw );
2038                         ber_bvarray_free( rwmap->rwm_bva_rewrite );
2039                 }
2040
2041                 avl_free( rwmap->rwm_oc.remap, rwm_mapping_dst_free );
2042                 avl_free( rwmap->rwm_oc.map, rwm_mapping_free );
2043                 avl_free( rwmap->rwm_at.remap, rwm_mapping_dst_free );
2044                 avl_free( rwmap->rwm_at.map, rwm_mapping_free );
2045                 ber_bvarray_free( rwmap->rwm_bva_map );
2046
2047                 ch_free( rwmap );
2048         }
2049
2050         return rc;
2051 }
2052
2053 static slap_overinst rwm = { { NULL } };
2054
2055 #if SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC
2056 static
2057 #endif /* SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC */
2058 int
2059 rwm_initialize( void )
2060 {
2061         int             rc;
2062
2063         /* Make sure we don't exceed the bits reserved for userland */
2064         config_check_userland( RWM_CF_LAST );
2065
2066         memset( &rwm, 0, sizeof( slap_overinst ) );
2067
2068         rwm.on_bi.bi_type = "rwm";
2069         rwm.on_bi.bi_flags =
2070                 SLAPO_BFLAG_SINGLE |
2071                 0;
2072
2073         rwm.on_bi.bi_db_init = rwm_db_init;
2074         rwm.on_bi.bi_db_config = rwm_db_config;
2075         rwm.on_bi.bi_db_destroy = rwm_db_destroy;
2076
2077         rwm.on_bi.bi_op_bind = rwm_op_bind;
2078         rwm.on_bi.bi_op_search = rwm_op_search;
2079         rwm.on_bi.bi_op_compare = rwm_op_compare;
2080         rwm.on_bi.bi_op_modify = rwm_op_modify;
2081         rwm.on_bi.bi_op_modrdn = rwm_op_modrdn;
2082         rwm.on_bi.bi_op_add = rwm_op_add;
2083         rwm.on_bi.bi_op_delete = rwm_op_delete;
2084         rwm.on_bi.bi_op_unbind = rwm_op_unbind;
2085         rwm.on_bi.bi_extended = rwm_extended;
2086
2087         rwm.on_bi.bi_operational = rwm_operational;
2088         rwm.on_bi.bi_chk_referrals = 0 /* rwm_chk_referrals */ ;
2089
2090         rwm.on_bi.bi_connection_init = rwm_conn_init;
2091         rwm.on_bi.bi_connection_destroy = rwm_conn_destroy;
2092
2093         rwm.on_response = rwm_response;
2094
2095         rwm.on_bi.bi_cf_ocs = rwmocs;
2096
2097         rc = config_register_schema( rwmcfg, rwmocs );
2098         if ( rc ) {
2099                 return rc;
2100         }
2101
2102         return overlay_register( &rwm );
2103 }
2104
2105 #if SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC
2106 int
2107 init_module( int argc, char *argv[] )
2108 {
2109         return rwm_initialize();
2110 }
2111 #endif /* SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC */
2112
2113 #endif /* SLAPD_OVER_RWM */