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 2003-2009 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 typedef struct rwm_op_cb {
  42         slap_callback cb;
  43         rwm_op_state ros;
  44 } rwm_op_cb;
  45
  46 static int
  47 rwm_db_destroy( BackendDB *be, ConfigReply *cr );
  48
  49 static int
  50 rwm_send_entry( Operation *op, SlapReply *rs );
  51
  52 static void
  53 rwm_op_rollback( Operation *op, SlapReply *rs, rwm_op_state *ros )
  54 {
  55         if ( !BER_BVISNULL( &ros->ro_dn ) ) {
  56                 op->o_req_dn = ros->ro_dn;
  57         }
  58         if ( !BER_BVISNULL( &ros->ro_ndn ) ) {
  59                 op->o_req_ndn = ros->ro_ndn;
  60         }
  61
  62         if ( !BER_BVISNULL( &ros->r_dn )
  63                 && ros->r_dn.bv_val != ros->ro_dn.bv_val )
  64         {
  65                 assert( ros->r_dn.bv_val != ros->r_ndn.bv_val );
  66                 ch_free( ros->r_dn.bv_val );
  67                 BER_BVZERO( &ros->r_dn );
  68         }
  69
  70         if ( !BER_BVISNULL( &ros->r_ndn )
  71                 && ros->r_ndn.bv_val != ros->ro_ndn.bv_val )
  72         {
  73                 ch_free( ros->r_ndn.bv_val );
  74                 BER_BVZERO( &ros->r_ndn );
  75         }
  76
  77         BER_BVZERO( &ros->ro_dn );
  78         BER_BVZERO( &ros->ro_ndn );
  79
  80         switch( ros->r_tag ) {
  81         case LDAP_REQ_COMPARE:
  82                 if ( op->orc_ava->aa_value.bv_val != ros->orc_ava->aa_value.bv_val )
  83                         op->o_tmpfree( op->orc_ava->aa_value.bv_val, op->o_tmpmemctx );
  84                 op->orc_ava = ros->orc_ava;
  85                 break;
  86         case LDAP_REQ_MODIFY:
  87                 slap_mods_free( op->orm_modlist, 1 );
  88                 op->orm_modlist = ros->orm_modlist;
  89                 break;
  90         case LDAP_REQ_MODRDN:
  91                 if ( op->orr_newSup != ros->orr_newSup ) {
  92                         ch_free( op->orr_newSup->bv_val );
  93                         ch_free( op->orr_nnewSup->bv_val );
  94                         op->o_tmpfree( op->orr_newSup, op->o_tmpmemctx );
  95                         op->o_tmpfree( op->orr_nnewSup, op->o_tmpmemctx );
  96                         op->orr_newSup = ros->orr_newSup;
  97                         op->orr_nnewSup = ros->orr_nnewSup;
  98                 }
  99                 if ( op->orr_newrdn.bv_val != ros->orr_newrdn.bv_val ) {
 100                         ch_free( op->orr_newrdn.bv_val );
 101                         ch_free( op->orr_nnewrdn.bv_val );
 102                         op->orr_newrdn = ros->orr_newrdn;
 103                         op->orr_nnewrdn = ros->orr_nnewrdn;
 104                 }
 105                 break;
 106         case LDAP_REQ_SEARCH:
 107                 ch_free( ros->mapped_attrs );
 108                 filter_free_x( op, op->ors_filter, 1 );
 109                 ch_free( op->ors_filterstr.bv_val );
 110                 op->ors_attrs = ros->ors_attrs;
 111                 op->ors_filter = ros->ors_filter;
 112                 op->ors_filterstr = ros->ors_filterstr;
 113                 break;
 114         case LDAP_REQ_EXTENDED:
 115                 if ( op->ore_reqdata != ros->ore_reqdata ) {
 116                         ber_bvfree( op->ore_reqdata );
 117                         op->ore_reqdata = ros->ore_reqdata;
 118                 }
 119                 break;
 120         case LDAP_REQ_BIND:
 121                 if ( rs->sr_err == LDAP_SUCCESS ) {
 122 #if 0
 123                         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 124                         /* too late, c_mutex released */
 125                         fprintf( stderr, "*** DN: \"%s\" => \"%s\"\n",
 126                                 op->o_conn->c_ndn.bv_val,
 127                                 op->o_req_ndn.bv_val );
 128                         ber_bvreplace( &op->o_conn->c_ndn,
 129                                 &op->o_req_ndn );
 130                         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 131 #endif
 132                 }
 133                 break;
 134         default:        break;
 135         }
 136 }
 137
 138 static int
 139 rwm_op_cleanup( Operation *op, SlapReply *rs )
 140 {
 141         slap_callback   *cb = op->o_callback;
 142         rwm_op_state *ros = cb->sc_private;
 143
 144         if ( rs->sr_type == REP_RESULT || rs->sr_type == REP_EXTENDED ||
 145                 op->o_abandon || rs->sr_err == SLAPD_ABANDON )
 146         {
 147                 rwm_op_rollback( op, rs, ros );
 148
 149                 op->o_callback = op->o_callback->sc_next;
 150                 op->o_tmpfree( cb, op->o_tmpmemctx );
 151         }
 152
 153         return SLAP_CB_CONTINUE;
 154 }
 155
 156 static rwm_op_cb *
 157 rwm_callback_get( Operation *op, SlapReply *rs )
 158 {
 159         rwm_op_cb       *roc = NULL;
 160
 161         roc = op->o_tmpalloc( sizeof( struct rwm_op_cb ), op->o_tmpmemctx );
 162         roc->cb.sc_cleanup = rwm_op_cleanup;
 163         roc->cb.sc_response = NULL;
 164         roc->cb.sc_next = op->o_callback;
 165         roc->cb.sc_private = &roc->ros;
 166         roc->ros.r_tag = op->o_tag;
 167         roc->ros.ro_dn = op->o_req_dn;
 168         roc->ros.ro_ndn = op->o_req_ndn;
 169         roc->ros.o_request = op->o_request;
 170         BER_BVZERO( &roc->ros.r_dn );
 171         BER_BVZERO( &roc->ros.r_ndn );
 172
 173         return roc;
 174 }
 175
 176
 177 static int
 178 rwm_op_dn_massage( Operation *op, SlapReply *rs, void *cookie,
 179         rwm_op_state *ros )
 180 {
 181         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 182         struct ldaprwmap        *rwmap =
 183                         (struct ldaprwmap *)on->on_bi.bi_private;
 184
 185         struct berval           dn = BER_BVNULL,
 186                                 ndn = BER_BVNULL;
 187         int                     rc = 0;
 188         dncookie                dc;
 189
 190         /*
 191          * Rewrite the dn if needed
 192          */
 193         dc.rwmap = rwmap;
 194         dc.conn = op->o_conn;
 195         dc.rs = rs;
 196         dc.ctx = (char *)cookie;
 197
 198         /* NOTE: in those cases where only the ndn is available,
 199          * and the caller sets op->o_req_dn = op->o_req_ndn,
 200          * only rewrite the op->o_req_ndn and use it as
 201          * op->o_req_dn as well */
 202         ndn = op->o_req_ndn;
 203         if ( op->o_req_dn.bv_val != op->o_req_ndn.bv_val ) {
 204                 dn = op->o_req_dn;
 205                 rc = rwm_dn_massage_pretty_normalize( &dc, &op->o_req_dn, &dn, &ndn );
 206         } else {
 207                 rc = rwm_dn_massage_normalize( &dc, &op->o_req_ndn, &ndn );
 208         }
 209
 210         if ( rc != LDAP_SUCCESS ) {
 211                 return rc;
 212         }
 213
 214         if ( ( op->o_req_dn.bv_val != op->o_req_ndn.bv_val && dn.bv_val == op->o_req_dn.bv_val )
 215                         || ndn.bv_val == op->o_req_ndn.bv_val )
 216         {
 217                 return LDAP_SUCCESS;
 218         }
 219
 220         if ( op->o_req_dn.bv_val != op->o_req_ndn.bv_val ) {
 221                 op->o_req_dn = dn;
 222                 assert( BER_BVISNULL( &ros->r_dn ) );
 223                 ros->r_dn = dn;
 224         } else {
 225                 op->o_req_dn = ndn;
 226         }
 227         op->o_req_ndn = ndn;
 228         assert( BER_BVISNULL( &ros->r_ndn ) );
 229         ros->r_ndn = ndn;
 230
 231         return LDAP_SUCCESS;
 232 }
 233
 234 static int
 235 rwm_op_add( Operation *op, SlapReply *rs )
 236 {
 237         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 238         struct ldaprwmap        *rwmap =
 239                         (struct ldaprwmap *)on->on_bi.bi_private;
 240
 241         int                     rc,
 242                                 i;
 243         Attribute               **ap = NULL;
 244         char                    *olddn = op->o_req_dn.bv_val;
 245         int                     isupdate;
 246
 247         rwm_op_cb               *roc = rwm_callback_get( op, rs );
 248
 249         rc = rwm_op_dn_massage( op, rs, "addDN", &roc->ros );
 250         if ( rc != LDAP_SUCCESS ) {
 251                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 252                 send_ldap_error( op, rs, rc, "addDN massage error" );
 253                 return -1;
 254         }
 255
 256         if ( olddn != op->o_req_dn.bv_val ) {
 257                 ber_bvreplace( &op->ora_e->e_name, &op->o_req_dn );
 258                 ber_bvreplace( &op->ora_e->e_nname, &op->o_req_ndn );
 259         }
 260
 261         /* Count number of attributes in entry */
 262         isupdate = be_shadow_update( op );
 263         for ( i = 0, ap = &op->oq_add.rs_e->e_attrs; *ap; ) {
 264                 Attribute       *a;
 265
 266                 if ( (*ap)->a_desc == slap_schema.si_ad_objectClass ||
 267                                 (*ap)->a_desc == slap_schema.si_ad_structuralObjectClass )
 268                 {
 269                         int             j, last;
 270
 271                         last = (*ap)->a_numvals - 1;
 272                         for ( j = 0; !BER_BVISNULL( &(*ap)->a_vals[ j ] ); j++ ) {
 273                                 struct ldapmapping      *mapping = NULL;
 274
 275                                 ( void )rwm_mapping( &rwmap->rwm_oc, &(*ap)->a_vals[ j ],
 276                                                 &mapping, RWM_MAP );
 277                                 if ( mapping == NULL ) {
 278                                         if ( rwmap->rwm_at.drop_missing ) {
 279                                                 /* FIXME: we allow to remove objectClasses as well;
 280                                                  * if the resulting entry is inconsistent, that's
 281                                                  * the relayed database's business...
 282                                                  */
 283                                                 ch_free( (*ap)->a_vals[ j ].bv_val );
 284                                                 if ( last > j ) {
 285                                                         (*ap)->a_vals[ j ] = (*ap)->a_vals[ last ];
 286                                                 }
 287                                                 BER_BVZERO( &(*ap)->a_vals[ last ] );
 288                                                 (*ap)->a_numvals--;
 289                                                 last--;
 290                                                 j--;
 291                                         }
 292
 293                                 } else {
 294                                         ch_free( (*ap)->a_vals[ j ].bv_val );
 295                                         ber_dupbv( &(*ap)->a_vals[ j ], &mapping->m_dst );
 296                                 }
 297                         }
 298
 299                 } else if ( !isupdate && !get_relax( op ) && (*ap)->a_desc->ad_type->sat_no_user_mod )
 300                 {
 301                         goto next_attr;
 302
 303                 } else {
 304                         struct ldapmapping      *mapping = NULL;
 305
 306                         ( void )rwm_mapping( &rwmap->rwm_at, &(*ap)->a_desc->ad_cname,
 307                                         &mapping, RWM_MAP );
 308                         if ( mapping == NULL ) {
 309                                 if ( rwmap->rwm_at.drop_missing ) {
 310                                         goto cleanup_attr;
 311                                 }
 312                         }
 313
 314                         if ( (*ap)->a_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 315                                         || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 316                         {
 317                                 /*
 318                                  * FIXME: rewrite could fail; in this case
 319                                  * the operation should give up, right?
 320                                  */
 321                                 rc = rwm_dnattr_rewrite( op, rs, "addAttrDN",
 322                                                 (*ap)->a_vals,
 323                                                 (*ap)->a_nvals ? &(*ap)->a_nvals : NULL );
 324                                 if ( rc ) {
 325                                         goto cleanup_attr;
 326                                 }
 327
 328                         } else if ( (*ap)->a_desc == slap_schema.si_ad_ref ) {
 329                                 rc = rwm_referral_rewrite( op, rs, "referralAttrDN",
 330                                                 (*ap)->a_vals,
 331                                                 (*ap)->a_nvals ? &(*ap)->a_nvals : NULL );
 332                                 if ( rc != LDAP_SUCCESS ) {
 333                                         goto cleanup_attr;
 334                                 }
 335                         }
 336
 337                         if ( mapping != NULL ) {
 338                                 assert( mapping->m_dst_ad != NULL );
 339                                 (*ap)->a_desc = mapping->m_dst_ad;
 340                         }
 341                 }
 342
 343 next_attr:;
 344                 ap = &(*ap)->a_next;
 345                 continue;
 346
 347 cleanup_attr:;
 348                 /* FIXME: leaking attribute/values? */
 349                 a = *ap;
 350
 351                 *ap = (*ap)->a_next;
 352                 attr_free( a );
 353         }
 354
 355         op->o_callback = &roc->cb;
 356
 357         return SLAP_CB_CONTINUE;
 358 }
 359
 360 static int
 361 rwm_conn_init( BackendDB *be, Connection *conn )
 362 {
 363         slap_overinst           *on = (slap_overinst *) be->bd_info;
 364         struct ldaprwmap        *rwmap =
 365                         (struct ldaprwmap *)on->on_bi.bi_private;
 366
 367         ( void )rewrite_session_init( rwmap->rwm_rw, conn );
 368
 369         return SLAP_CB_CONTINUE;
 370 }
 371
 372 static int
 373 rwm_conn_destroy( BackendDB *be, Connection *conn )
 374 {
 375         slap_overinst           *on = (slap_overinst *) be->bd_info;
 376         struct ldaprwmap        *rwmap =
 377                         (struct ldaprwmap *)on->on_bi.bi_private;
 378
 379         ( void )rewrite_session_delete( rwmap->rwm_rw, conn );
 380
 381         return SLAP_CB_CONTINUE;
 382 }
 383
 384 static int
 385 rwm_op_bind( Operation *op, SlapReply *rs )
 386 {
 387         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 388         int                     rc;
 389
 390         rwm_op_cb               *roc = rwm_callback_get( op, rs );
 391
 392         rc = rwm_op_dn_massage( op, rs, "bindDN", &roc->ros );
 393         if ( rc != LDAP_SUCCESS ) {
 394                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 395                 send_ldap_error( op, rs, rc, "bindDN massage error" );
 396                 return -1;
 397         }
 398
 399         overlay_callback_after_backover( op, &roc->cb, 1 );
 400
 401         return SLAP_CB_CONTINUE;
 402 }
 403
 404 static int
 405 rwm_op_unbind( Operation *op, SlapReply *rs )
 406 {
 407         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 408         struct ldaprwmap        *rwmap =
 409                         (struct ldaprwmap *)on->on_bi.bi_private;
 410
 411         rewrite_session_delete( rwmap->rwm_rw, op->o_conn );
 412
 413         return SLAP_CB_CONTINUE;
 414 }
 415
 416 static int
 417 rwm_op_compare( Operation *op, SlapReply *rs )
 418 {
 419         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 420         struct ldaprwmap        *rwmap =
 421                         (struct ldaprwmap *)on->on_bi.bi_private;
 422
 423         int                     rc;
 424         struct berval           mapped_vals[2] = { BER_BVNULL, BER_BVNULL };
 425
 426         rwm_op_cb               *roc = rwm_callback_get( op, rs );
 427
 428         rc = rwm_op_dn_massage( op, rs, "compareDN", &roc->ros );
 429         if ( rc != LDAP_SUCCESS ) {
 430                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 431                 send_ldap_error( op, rs, rc, "compareDN massage error" );
 432                 return -1;
 433         }
 434
 435         /* if the attribute is an objectClass, try to remap its value */
 436         if ( op->orc_ava->aa_desc == slap_schema.si_ad_objectClass
 437                         || op->orc_ava->aa_desc == slap_schema.si_ad_structuralObjectClass )
 438         {
 439                 rwm_map( &rwmap->rwm_oc, &op->orc_ava->aa_value,
 440                                 &mapped_vals[0], RWM_MAP );
 441                 if ( BER_BVISNULL( &mapped_vals[0] ) || BER_BVISEMPTY( &mapped_vals[0] ) )
 442                 {
 443                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 444                         send_ldap_error( op, rs, LDAP_OTHER, "compare objectClass map error" );
 445                         return -1;
 446
 447                 } else if ( mapped_vals[0].bv_val != op->orc_ava->aa_value.bv_val ) {
 448                         ber_dupbv_x( &op->orc_ava->aa_value, &mapped_vals[0],
 449                                 op->o_tmpmemctx );
 450                 }
 451
 452         } else {
 453                 struct ldapmapping      *mapping = NULL;
 454                 AttributeDescription    *ad = op->orc_ava->aa_desc;
 455
 456                 ( void )rwm_mapping( &rwmap->rwm_at, &op->orc_ava->aa_desc->ad_cname,
 457                                 &mapping, RWM_MAP );
 458                 if ( mapping == NULL ) {
 459                         if ( rwmap->rwm_at.drop_missing ) {
 460                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 461                                 send_ldap_error( op, rs, LDAP_OTHER, "compare attributeType map error" );
 462                                 return -1;
 463                         }
 464
 465                 } else {
 466                         assert( mapping->m_dst_ad != NULL );
 467                         ad = mapping->m_dst_ad;
 468                 }
 469
 470                 if ( op->orc_ava->aa_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 471                                 || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 472                 {
 473                         struct berval   *mapped_valsp[2];
 474
 475                         mapped_valsp[0] = &mapped_vals[0];
 476                         mapped_valsp[1] = &mapped_vals[1];
 477
 478                         mapped_vals[0] = op->orc_ava->aa_value;
 479
 480                         rc = rwm_dnattr_rewrite( op, rs, "compareAttrDN", NULL, mapped_valsp );
 481
 482                         if ( rc != LDAP_SUCCESS ) {
 483                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 484                                 send_ldap_error( op, rs, rc, "compareAttrDN massage error" );
 485                                 return -1;
 486                         }
 487
 488                         if ( mapped_vals[ 0 ].bv_val != op->orc_ava->aa_value.bv_val ) {
 489                                 /* NOTE: if we get here, rwm_dnattr_rewrite()
 490                                  * already freed the old value, so now
 491                                  * it's invalid */
 492                                 ber_dupbv_x( &op->orc_ava->aa_value, &mapped_vals[0],
 493                                         op->o_tmpmemctx );
 494                                 ber_memfree_x( mapped_vals[ 0 ].bv_val, NULL );
 495                         }
 496                 }
 497                 op->orc_ava->aa_desc = ad;
 498         }
 499
 500         op->o_callback = &roc->cb;
 501
 502         return SLAP_CB_CONTINUE;
 503 }
 504
 505 static int
 506 rwm_op_delete( Operation *op, SlapReply *rs )
 507 {
 508         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 509         int                     rc;
 510
 511         rwm_op_cb               *roc = rwm_callback_get( op, rs );
 512
 513         rc = rwm_op_dn_massage( op, rs, "deleteDN", &roc->ros );
 514         if ( rc != LDAP_SUCCESS ) {
 515                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 516                 send_ldap_error( op, rs, rc, "deleteDN massage error" );
 517                 return -1;
 518         }
 519
 520         op->o_callback = &roc->cb;
 521
 522         return SLAP_CB_CONTINUE;
 523 }
 524
 525 static int
 526 rwm_op_modify( Operation *op, SlapReply *rs )
 527 {
 528         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 529         struct ldaprwmap        *rwmap =
 530                         (struct ldaprwmap *)on->on_bi.bi_private;
 531
 532         int                     isupdate;
 533         Modifications           **mlp;
 534         int                     rc;
 535
 536         rwm_op_cb               *roc = rwm_callback_get( op, rs );
 537
 538         rc = rwm_op_dn_massage( op, rs, "modifyDN", &roc->ros );
 539         if ( rc != LDAP_SUCCESS ) {
 540                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 541                 send_ldap_error( op, rs, rc, "modifyDN massage error" );
 542                 return -1;
 543         }
 544
 545         isupdate = be_shadow_update( op );
 546         for ( mlp = &op->orm_modlist; *mlp; ) {
 547                 int                     is_oc = 0;
 548                 Modifications           *ml = *mlp;
 549                 struct ldapmapping      *mapping = NULL;
 550
 551                 /* ml points to a temporary mod until needs duplication */
 552                 if ( ml->sml_desc == slap_schema.si_ad_objectClass
 553                                 || ml->sml_desc == slap_schema.si_ad_structuralObjectClass )
 554                 {
 555                         is_oc = 1;
 556
 557                 } else if ( !isupdate && !get_relax( op ) && ml->sml_desc->ad_type->sat_no_user_mod  )
 558                 {
 559                         ml = ch_malloc( sizeof( Modifications ) );
 560                         *ml = **mlp;
 561                         if ( (*mlp)->sml_values ) {
 562                                 ber_bvarray_dup_x( &ml->sml_values, (*mlp)->sml_values, NULL );
 563                                 if ( (*mlp)->sml_nvalues ) {
 564                                         ber_bvarray_dup_x( &ml->sml_nvalues, (*mlp)->sml_nvalues, NULL );
 565                                 }
 566                         }
 567                         *mlp = ml;
 568                         goto next_mod;
 569
 570                 } else {
 571                         int                     drop_missing;
 572
 573                         drop_missing = rwm_mapping( &rwmap->rwm_at,
 574                                         &ml->sml_desc->ad_cname,
 575                                         &mapping, RWM_MAP );
 576                         if ( drop_missing || ( mapping != NULL && BER_BVISNULL( &mapping->m_dst ) ) )
 577                         {
 578                                 goto cleanup_mod;
 579                         }
 580                 }
 581
 582                 /* duplicate the modlist */
 583                 ml = ch_malloc( sizeof( Modifications ));
 584                 *ml = **mlp;
 585                 *mlp = ml;
 586
 587                 if ( ml->sml_values != NULL ) {
 588                         int i, num;
 589                         struct berval *bva;
 590
 591                         for ( num = 0; !BER_BVISNULL( &ml->sml_values[ num ] ); num++ )
 592                                 /* count values */ ;
 593
 594                         bva = ch_malloc( (num+1) * sizeof( struct berval ));
 595                         for (i=0; i<num; i++)
 596                                 ber_dupbv( &bva[i], &ml->sml_values[i] );
 597                         BER_BVZERO( &bva[i] );
 598                         ml->sml_values = bva;
 599
 600                         if ( ml->sml_nvalues ) {
 601                                 bva = ch_malloc( (num+1) * sizeof( struct berval ));
 602                                 for (i=0; i<num; i++)
 603                                         ber_dupbv( &bva[i], &ml->sml_nvalues[i] );
 604                                 BER_BVZERO( &bva[i] );
 605                                 ml->sml_nvalues = bva;
 606                         }
 607
 608                         if ( is_oc ) {
 609                                 int     last, j;
 610
 611                                 last = num-1;
 612
 613                                 for ( j = 0; !BER_BVISNULL( &ml->sml_values[ j ] ); j++ ) {
 614                                         struct ldapmapping      *oc_mapping = NULL;
 615
 616                                         ( void )rwm_mapping( &rwmap->rwm_oc, &ml->sml_values[ j ],
 617                                                         &oc_mapping, RWM_MAP );
 618                                         if ( oc_mapping == NULL ) {
 619                                                 if ( rwmap->rwm_at.drop_missing ) {
 620                                                         /* FIXME: we allow to remove objectClasses as well;
 621                                                          * if the resulting entry is inconsistent, that's
 622                                                          * the relayed database's business...
 623                                                          */
 624                                                         if ( last > j ) {
 625                                                                 ch_free( ml->sml_values[ j ].bv_val );
 626                                                                 ml->sml_values[ j ] = ml->sml_values[ last ];
 627                                                         }
 628                                                         BER_BVZERO( &ml->sml_values[ last ] );
 629                                                         last--;
 630                                                         j--;
 631                                                 }
 632
 633                                         } else {
 634                                                 ch_free( ml->sml_values[ j ].bv_val );
 635                                                 ber_dupbv( &ml->sml_values[ j ], &oc_mapping->m_dst );
 636                                         }
 637                                 }
 638
 639                         } else {
 640                                 if ( ml->sml_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 641                                                 || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 642                                 {
 643                                         rc = rwm_dnattr_rewrite( op, rs, "modifyAttrDN",
 644                                                         ml->sml_values,
 645                                                         ml->sml_nvalues ? &ml->sml_nvalues : NULL );
 646
 647                                 } else if ( ml->sml_desc == slap_schema.si_ad_ref ) {
 648                                         rc = rwm_referral_rewrite( op, rs,
 649                                                         "referralAttrDN",
 650                                                         ml->sml_values,
 651                                                         ml->sml_nvalues ? &ml->sml_nvalues : NULL );
 652                                         if ( rc != LDAP_SUCCESS ) {
 653                                                 goto cleanup_mod;
 654                                         }
 655                                 }
 656
 657                                 if ( rc != LDAP_SUCCESS ) {
 658                                         goto cleanup_mod;
 659                                 }
 660                         }
 661                 }
 662
 663 next_mod:;
 664                 if ( mapping != NULL ) {
 665                         /* use new attribute description */
 666                         assert( mapping->m_dst_ad != NULL );
 667                         ml->sml_desc = mapping->m_dst_ad;
 668                 }
 669
 670                 mlp = &ml->sml_next;
 671                 continue;
 672
 673 cleanup_mod:;
 674                 ml = *mlp;
 675                 *mlp = (*mlp)->sml_next;
 676                 slap_mod_free( &ml->sml_mod, 0 );
 677                 free( ml );
 678         }
 679
 680         op->o_callback = &roc->cb;
 681
 682         return SLAP_CB_CONTINUE;
 683 }
 684
 685 static int
 686 rwm_op_modrdn( Operation *op, SlapReply *rs )
 687 {
 688         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 689         struct ldaprwmap        *rwmap =
 690                         (struct ldaprwmap *)on->on_bi.bi_private;
 691
 692         int                     rc;
 693         dncookie                dc;
 694
 695         rwm_op_cb               *roc = rwm_callback_get( op, rs );
 696
 697         if ( op->orr_newSup ) {
 698                 struct berval   nnewSup = BER_BVNULL;
 699                 struct berval   newSup = BER_BVNULL;
 700
 701                 /*
 702                  * Rewrite the new superior, if defined and required
 703                  */
 704                 dc.rwmap = rwmap;
 705                 dc.conn = op->o_conn;
 706                 dc.rs = rs;
 707                 dc.ctx = "newSuperiorDN";
 708                 newSup = *op->orr_newSup;
 709                 nnewSup = *op->orr_nnewSup;
 710                 rc = rwm_dn_massage_pretty_normalize( &dc, op->orr_newSup, &newSup, &nnewSup );
 711                 if ( rc != LDAP_SUCCESS ) {
 712                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 713                         send_ldap_error( op, rs, rc, "newSuperiorDN massage error" );
 714                         return -1;
 715                 }
 716
 717                 if ( op->orr_newSup->bv_val != newSup.bv_val ) {
 718                         op->orr_newSup = op->o_tmpalloc( sizeof( struct berval ),
 719                                 op->o_tmpmemctx );
 720                         op->orr_nnewSup = op->o_tmpalloc( sizeof( struct berval ),
 721                                 op->o_tmpmemctx );
 722                         *op->orr_newSup = newSup;
 723                         *op->orr_nnewSup = nnewSup;
 724                 }
 725         }
 726
 727         /*
 728          * Rewrite the newRDN, if needed
 729          */
 730         {
 731                 struct berval   newrdn = BER_BVNULL;
 732                 struct berval   nnewrdn = BER_BVNULL;
 733
 734                 dc.rwmap = rwmap;
 735                 dc.conn = op->o_conn;
 736                 dc.rs = rs;
 737                 dc.ctx = "newRDN";
 738                 newrdn = op->orr_newrdn;
 739                 nnewrdn = op->orr_nnewrdn;
 740                 rc = rwm_dn_massage_pretty_normalize( &dc, &op->orr_newrdn, &newrdn, &nnewrdn );
 741                 if ( rc != LDAP_SUCCESS ) {
 742                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 743                         send_ldap_error( op, rs, rc, "newRDN massage error" );
 744                         goto err;
 745                 }
 746
 747                 if ( op->orr_newrdn.bv_val != newrdn.bv_val ) {
 748                         op->orr_newrdn = newrdn;
 749                         op->orr_nnewrdn = nnewrdn;
 750                 }
 751         }
 752
 753         /*
 754          * Rewrite the dn, if needed
 755          */
 756         rc = rwm_op_dn_massage( op, rs, "renameDN", &roc->ros );
 757         if ( rc != LDAP_SUCCESS ) {
 758                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 759                 send_ldap_error( op, rs, rc, "renameDN massage error" );
 760                 goto err;
 761         }
 762
 763         op->o_callback = &roc->cb;
 764
 765         rc = SLAP_CB_CONTINUE;
 766
 767         if ( 0 ) {
 768 err:;
 769                 if ( op->orr_newSup != roc->ros.orr_newSup ) {
 770                         ch_free( op->orr_newSup->bv_val );
 771                         ch_free( op->orr_nnewSup->bv_val );
 772                         op->o_tmpfree( op->orr_newSup, op->o_tmpmemctx );
 773                         op->o_tmpfree( op->orr_nnewSup, op->o_tmpmemctx );
 774                         op->orr_newSup = roc->ros.orr_newSup;
 775                         op->orr_nnewSup = roc->ros.orr_nnewSup;
 776                 }
 777
 778                 if ( op->orr_newrdn.bv_val != roc->ros.orr_newrdn.bv_val ) {
 779                         ch_free( op->orr_newrdn.bv_val );
 780                         ch_free( op->orr_nnewrdn.bv_val );
 781                         op->orr_newrdn = roc->ros.orr_newrdn;
 782                         op->orr_nnewrdn = roc->ros.orr_nnewrdn;
 783                 }
 784         }
 785
 786         return rc;
 787 }
 788
 789
 790 static int
 791 rwm_swap_attrs( Operation *op, SlapReply *rs )
 792 {
 793         slap_callback   *cb = op->o_callback;
 794         rwm_op_state *ros = cb->sc_private;
 795
 796         rs->sr_attrs = ros->ors_attrs;
 797
 798         /* other overlays might have touched op->ors_attrs,
 799          * so we restore the original version here, otherwise
 800          * attribute-mapping might fail */
 801         op->ors_attrs = ros->mapped_attrs;
 802
 803         return SLAP_CB_CONTINUE;
 804 }
 805
 806 /*
 807  * NOTE: this implementation of get/release entry is probably far from
 808  * optimal.  The rationale consists in intercepting the request directed
 809  * to the underlying database, in order to rewrite/remap the request,
 810  * perform it using the modified data, duplicate the resulting entry
 811  * and finally free it when release is called.
 812  * This implies that subsequent overlays are not called, as the request
 813  * is directly shunted to the underlying database.
 814  */
 815 static int
 816 rwm_entry_release_rw( Operation *op, Entry *e, int rw )
 817 {
 818         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 819
 820         /* can't be ours */
 821         if ( ((BackendInfo *)on->on_info->oi_orig)->bi_entry_get_rw == NULL ) {
 822                 return SLAP_CB_CONTINUE;
 823         }
 824
 825         /* just free entry if (probably) ours */
 826         if ( e->e_private == NULL && BER_BVISNULL( &e->e_bv ) ) {
 827                 entry_free( e );
 828                 return LDAP_SUCCESS;
 829         }
 830
 831         return SLAP_CB_CONTINUE;
 832 }
 833
 834 static int
 835 rwm_entry_get_rw( Operation *op, struct berval *ndn,
 836         ObjectClass *oc, AttributeDescription *at, int rw, Entry **ep )
 837 {
 838         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 839         struct ldaprwmap        *rwmap =
 840                         (struct ldaprwmap *)on->on_bi.bi_private;
 841
 842         int                     rc;
 843         dncookie                dc;
 844
 845         BackendDB               db;
 846         Operation               op2;
 847         SlapReply               rs = { REP_SEARCH };
 848
 849         rwm_op_state            ros = { 0 };
 850         struct berval           mndn = BER_BVNULL;
 851
 852         if ( ((BackendInfo *)on->on_info->oi_orig)->bi_entry_get_rw == NULL ) {
 853                 return SLAP_CB_CONTINUE;
 854         }
 855
 856         /* massage DN */
 857         op2.o_tag = LDAP_REQ_SEARCH;
 858         op2 = *op;
 859         op2.o_req_dn = *ndn;
 860         op2.o_req_ndn = *ndn;
 861         rc = rwm_op_dn_massage( &op2, &rs, "searchDN", &ros );
 862         if ( rc != LDAP_SUCCESS ) {
 863                 return LDAP_OTHER;
 864         }
 865
 866         mndn = BER_BVISNULL( &ros.r_ndn ) ? *ndn : ros.r_ndn;
 867
 868         /* map attribute & objectClass */
 869         if ( at != NULL ) {
 870         }
 871
 872         if ( oc != NULL ) {
 873         }
 874
 875         /* fetch entry */
 876         db = *op->o_bd;
 877         op2.o_bd = &db;
 878         op2.o_bd->bd_info = (BackendInfo *)on->on_info->oi_orig;
 879         op2.ors_attrs = slap_anlist_all_attributes;
 880         rc = op2.o_bd->bd_info->bi_entry_get_rw( &op2, &mndn, oc, at, rw, ep );
 881         if ( rc == LDAP_SUCCESS && *ep != NULL ) {
 882                 /* we assume be_entry_release() needs to be called */
 883                 rs.sr_flags = REP_ENTRY_MUSTRELEASE;
 884                 rs.sr_entry = *ep;
 885
 886                 /* duplicate & release */
 887                 op2.o_bd->bd_info = (BackendInfo *)on;
 888                 rc = rwm_send_entry( &op2, &rs );
 889                 if ( rc == SLAP_CB_CONTINUE ) {
 890                         *ep = rs.sr_entry;
 891                         rc = LDAP_SUCCESS;
 892                 }
 893         }
 894
 895         if ( !BER_BVISNULL( &ros.r_ndn) && ros.r_ndn.bv_val != ndn->bv_val ) {
 896                 op->o_tmpfree( ros.r_ndn.bv_val, op->o_tmpmemctx );
 897         }
 898
 899         return rc;
 900 }
 901
 902 static int
 903 rwm_op_search( Operation *op, SlapReply *rs )
 904 {
 905         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 906         struct ldaprwmap        *rwmap =
 907                         (struct ldaprwmap *)on->on_bi.bi_private;
 908
 909         int                     rc;
 910         dncookie                dc;
 911
 912         struct berval           fstr = BER_BVNULL;
 913         Filter                  *f = NULL;
 914
 915         AttributeName           *an = NULL;
 916
 917         char                    *text = NULL;
 918
 919         rwm_op_cb               *roc = rwm_callback_get( op, rs );
 920
 921         rc = rewrite_session_var_set( rwmap->rwm_rw, op->o_conn,
 922                 "searchFilter", op->ors_filterstr.bv_val );
 923         if ( rc == LDAP_SUCCESS )
 924                 rc = rwm_op_dn_massage( op, rs, "searchDN", &roc->ros );
 925         if ( rc != LDAP_SUCCESS ) {
 926                 text = "searchDN massage error";
 927                 goto error_return;
 928         }
 929
 930         /*
 931          * Rewrite the dn if needed
 932          */
 933         dc.rwmap = rwmap;
 934         dc.conn = op->o_conn;
 935         dc.rs = rs;
 936         dc.ctx = "searchFilterAttrDN";
 937
 938         rc = rwm_filter_map_rewrite( op, &dc, op->ors_filter, &fstr );
 939         if ( rc != LDAP_SUCCESS ) {
 940                 text = "searchFilter/searchFilterAttrDN massage error";
 941                 goto error_return;
 942         }
 943
 944         f = str2filter_x( op, fstr.bv_val );
 945
 946         if ( f == NULL ) {
 947                 text = "massaged filter parse error";
 948                 goto error_return;
 949         }
 950
 951         op->ors_filter = f;
 952         op->ors_filterstr = fstr;
 953
 954         rc = rwm_map_attrnames( &rwmap->rwm_at, &rwmap->rwm_oc,
 955                         op->ors_attrs, &an, RWM_MAP );
 956         if ( rc != LDAP_SUCCESS ) {
 957                 text = "attribute list mapping error";
 958                 goto error_return;
 959         }
 960
 961         op->ors_attrs = an;
 962         /* store the mapped Attributes for later usage, in
 963          * the case that other overlays change op->ors_attrs */
 964         roc->ros.mapped_attrs = an;
 965         roc->cb.sc_response = rwm_swap_attrs;
 966
 967         op->o_callback = &roc->cb;
 968
 969         return SLAP_CB_CONTINUE;
 970
 971 error_return:;
 972         if ( an != NULL ) {
 973                 ch_free( an );
 974         }
 975
 976         if ( f != NULL ) {
 977                 filter_free_x( op, f, 1 );
 978         }
 979
 980         if ( !BER_BVISNULL( &fstr ) ) {
 981                 ch_free( fstr.bv_val );
 982         }
 983
 984         rwm_op_rollback( op, rs, &roc->ros );
 985         op->oq_search = roc->ros.oq_search;
 986         op->o_tmpfree( roc, op->o_tmpmemctx );
 987
 988         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 989         send_ldap_error( op, rs, rc, text );
 990
 991         return -1;
 992
 993 }
 994
 995 static int
 996 rwm_exop_passwd( Operation *op, SlapReply *rs )
 997 {
 998         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 999         int                     rc;
1000         rwm_op_cb *roc;
1001
1002         struct berval   id = BER_BVNULL,
1003                         pwold = BER_BVNULL,
1004                         pwnew = BER_BVNULL;
1005         BerElement *ber = NULL;
1006
1007         if ( !BER_BVISNULL( &op->o_req_ndn ) ) {
1008                 return LDAP_SUCCESS;
1009         }
1010
1011         if ( !SLAP_ISGLOBALOVERLAY( op->o_bd ) ) {
1012                 rs->sr_err = LDAP_OTHER;
1013                 return rs->sr_err;
1014         }
1015
1016         rs->sr_err = slap_passwd_parse( op->ore_reqdata, &id,
1017                 &pwold, &pwnew, &rs->sr_text );
1018         if ( rs->sr_err != LDAP_SUCCESS ) {
1019                 return rs->sr_err;
1020         }
1021
1022         if ( !BER_BVISNULL( &id ) ) {
1023                 char idNul = id.bv_val[id.bv_len];
1024                 id.bv_val[id.bv_len] = '\0';
1025                 rs->sr_err = dnPrettyNormal( NULL, &id, &op->o_req_dn,
1026                                 &op->o_req_ndn, op->o_tmpmemctx );
1027                 id.bv_val[id.bv_len] = idNul;
1028                 if ( rs->sr_err != LDAP_SUCCESS ) {
1029                         rs->sr_text = "Invalid DN";
1030                         return rs->sr_err;
1031                 }
1032
1033         } else {
1034                 ber_dupbv_x( &op->o_req_dn, &op->o_dn, op->o_tmpmemctx );
1035                 ber_dupbv_x( &op->o_req_ndn, &op->o_ndn, op->o_tmpmemctx );
1036         }
1037
1038         roc = rwm_callback_get( op, rs );
1039
1040         rc = rwm_op_dn_massage( op, rs, "extendedDN", &roc->ros );
1041         if ( rc != LDAP_SUCCESS ) {
1042                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1043                 send_ldap_error( op, rs, rc, "extendedDN massage error" );
1044                 return -1;
1045         }
1046
1047         ber = ber_alloc_t( LBER_USE_DER );
1048         if ( !ber ) {
1049                 rs->sr_err = LDAP_OTHER;
1050                 rs->sr_text = "No memory";
1051                 return rs->sr_err;
1052         }
1053         ber_printf( ber, "{" );
1054         if ( !BER_BVISNULL( &id )) {
1055                 ber_printf( ber, "tO", LDAP_TAG_EXOP_MODIFY_PASSWD_ID,
1056                         &op->o_req_dn );
1057         }
1058         if ( !BER_BVISNULL( &pwold )) {
1059                 ber_printf( ber, "tO", LDAP_TAG_EXOP_MODIFY_PASSWD_OLD, &pwold );
1060         }
1061         if ( !BER_BVISNULL( &pwnew )) {
1062                 ber_printf( ber, "tO", LDAP_TAG_EXOP_MODIFY_PASSWD_NEW, &pwnew );
1063         }
1064         ber_printf( ber, "N}" );
1065         ber_flatten( ber, &op->ore_reqdata );
1066         ber_free( ber, 1 );
1067
1068         op->o_callback = &roc->cb;
1069
1070         return SLAP_CB_CONTINUE;
1071 }
1072
1073 static struct exop {
1074         struct berval   oid;
1075         BI_op_extended  *extended;
1076 } exop_table[] = {
1077         { BER_BVC(LDAP_EXOP_MODIFY_PASSWD),     rwm_exop_passwd },
1078         { BER_BVNULL, NULL }
1079 };
1080
1081 static int
1082 rwm_extended( Operation *op, SlapReply *rs )
1083 {
1084         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
1085         int                     rc;
1086         rwm_op_cb *roc;
1087
1088         int     i;
1089
1090         for ( i = 0; exop_table[i].extended != NULL; i++ ) {
1091                 if ( bvmatch( &exop_table[i].oid, &op->oq_extended.rs_reqoid ) )
1092                 {
1093                         rc = exop_table[i].extended( op, rs );
1094                         switch ( rc ) {
1095                         case LDAP_SUCCESS:
1096                                 break;
1097
1098                         case SLAP_CB_CONTINUE:
1099                         case SLAPD_ABANDON:
1100                                 return rc;
1101
1102                         default:
1103                                 send_ldap_result( op, rs );
1104                                 return rc;
1105                         }
1106                         break;
1107                 }
1108         }
1109
1110         roc = rwm_callback_get( op, rs );
1111
1112         rc = rwm_op_dn_massage( op, rs, "extendedDN", &roc->ros );
1113         if ( rc != LDAP_SUCCESS ) {
1114                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1115                 send_ldap_error( op, rs, rc, "extendedDN massage error" );
1116                 return -1;
1117         }
1118
1119         /* TODO: rewrite/map extended data ? ... */
1120         op->o_callback = &roc->cb;
1121
1122         return SLAP_CB_CONTINUE;
1123 }
1124
1125 static int
1126 rwm_matched( Operation *op, SlapReply *rs )
1127 {
1128         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
1129         struct ldaprwmap        *rwmap =
1130                         (struct ldaprwmap *)on->on_bi.bi_private;
1131
1132         struct berval           dn, mdn;
1133         dncookie                dc;
1134         int                     rc;
1135
1136         if ( rs->sr_matched == NULL ) {
1137                 return SLAP_CB_CONTINUE;
1138         }
1139
1140         dc.rwmap = rwmap;
1141         dc.conn = op->o_conn;
1142         dc.rs = rs;
1143         dc.ctx = "matchedDN";
1144         ber_str2bv( rs->sr_matched, 0, 0, &dn );
1145         mdn = dn;
1146         rc = rwm_dn_massage_pretty( &dc, &dn, &mdn );
1147         if ( rc != LDAP_SUCCESS ) {
1148                 rs->sr_err = rc;
1149                 rs->sr_text = "Rewrite error";
1150                 return 1;
1151         }
1152
1153         if ( mdn.bv_val != dn.bv_val ) {
1154                 if ( rs->sr_flags & REP_MATCHED_MUSTBEFREED ) {
1155                         ch_free( (void *)rs->sr_matched );
1156
1157                 } else {
1158                         rs->sr_flags |= REP_MATCHED_MUSTBEFREED;
1159                 }
1160                 rs->sr_matched = mdn.bv_val;
1161         }
1162
1163         return SLAP_CB_CONTINUE;
1164 }
1165
1166 static int
1167 rwm_attrs( Operation *op, SlapReply *rs, Attribute** a_first, int stripEntryDN )
1168 {
1169         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
1170         struct ldaprwmap        *rwmap =
1171                         (struct ldaprwmap *)on->on_bi.bi_private;
1172
1173         dncookie                dc;
1174         int                     rc;
1175         Attribute               **ap;
1176         int                     isupdate;
1177         int                     check_duplicate_attrs = 0;
1178
1179         /*
1180          * Rewrite the dn attrs, if needed
1181          */
1182         dc.rwmap = rwmap;
1183         dc.conn = op->o_conn;
1184         dc.rs = NULL;
1185
1186         /* FIXME: the entries are in the remote mapping form;
1187          * so we need to select those attributes we are willing
1188          * to return, and remap them accordingly */
1189
1190         /* FIXME: in principle, one could map an attribute
1191          * on top of another, which already exists.
1192          * As such, in the end there might exist more than
1193          * one instance of an attribute.
1194          * We should at least check if this occurs, and issue
1195          * an error (because multiple instances of attrs in
1196          * response are not valid), or merge the values (what
1197          * about duplicate values?) */
1198         isupdate = be_shadow_update( op );
1199         for ( ap = a_first; *ap; ) {
1200                 struct ldapmapping      *mapping = NULL;
1201                 int                     drop_missing;
1202                 int                     last = -1;
1203                 Attribute               *a;
1204
1205                 if ( ( rwmap->rwm_flags & RWM_F_DROP_UNREQUESTED_ATTRS ) &&
1206                                 op->ors_attrs != NULL &&
1207                                 !SLAP_USERATTRS( rs->sr_attr_flags ) &&
1208                                 !ad_inlist( (*ap)->a_desc, op->ors_attrs ) )
1209                 {
1210                         goto cleanup_attr;
1211                 }
1212
1213                 drop_missing = rwm_mapping( &rwmap->rwm_at,
1214                                 &(*ap)->a_desc->ad_cname, &mapping, RWM_REMAP );
1215                 if ( drop_missing || ( mapping != NULL && BER_BVISEMPTY( &mapping->m_dst ) ) )
1216                 {
1217                         goto cleanup_attr;
1218                 }
1219                 if ( mapping != NULL ) {
1220                         assert( mapping->m_dst_ad != NULL );
1221
1222                         /* try to normalize mapped Attributes if the original
1223                          * AttributeType was not normalized */
1224                         if ( (!(*ap)->a_desc->ad_type->sat_equality ||
1225                                 !(*ap)->a_desc->ad_type->sat_equality->smr_normalize) &&
1226                                 mapping->m_dst_ad->ad_type->sat_equality &&
1227                                 mapping->m_dst_ad->ad_type->sat_equality->smr_normalize )
1228                         {
1229                                 if ((rwmap->rwm_flags & RWM_F_NORMALIZE_MAPPED_ATTRS))
1230                                 {
1231                                         int i = 0;
1232
1233                                         last = (*ap)->a_numvals;
1234                                         if ( last )
1235                                         {
1236                                                 (*ap)->a_nvals = ch_malloc( (last+1) * sizeof(struct berval) );
1237
1238                                                 for ( i = 0; !BER_BVISNULL( &(*ap)->a_vals[i]); i++ ) {
1239                                                         int             rc;
1240                                                         /*
1241                                                          * check that each value is valid per syntax
1242                                                          * and pretty if appropriate
1243                                                          */
1244                                                         rc = mapping->m_dst_ad->ad_type->sat_equality->smr_normalize(
1245                                                                 SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
1246                                                                 mapping->m_dst_ad->ad_type->sat_syntax,
1247                                                                 mapping->m_dst_ad->ad_type->sat_equality,
1248                                                                 &(*ap)->a_vals[i], &(*ap)->a_nvals[i],
1249                                                                 NULL );
1250
1251                                                         if ( rc != LDAP_SUCCESS ) {
1252                                                                 BER_BVZERO( &(*ap)->a_nvals[i] );
1253                                                         }
1254                                                 }
1255                                                 BER_BVZERO( &(*ap)->a_nvals[i] );
1256                                         }
1257
1258                                 } else {
1259                                         assert( (*ap)->a_nvals == (*ap)->a_vals );
1260                                         (*ap)->a_nvals = NULL;
1261                                         ber_bvarray_dup_x( &(*ap)->a_nvals, (*ap)->a_vals, NULL );
1262                                 }
1263                         }
1264
1265                         /* rewrite the attribute description */
1266                         (*ap)->a_desc = mapping->m_dst_ad;
1267
1268                         /* will need to check for duplicate attrs */
1269                         check_duplicate_attrs++;
1270                 }
1271
1272                 if ( (*ap)->a_desc == slap_schema.si_ad_entryDN ) {
1273                         if ( stripEntryDN ) {
1274                                 /* will be generated by frontend */
1275                                 goto cleanup_attr;
1276                         }
1277
1278                 } else if ( !isupdate
1279                         && !get_relax( op )
1280                         && (*ap)->a_desc->ad_type->sat_no_user_mod
1281                         && (*ap)->a_desc->ad_type != slap_schema.si_at_undefined )
1282                 {
1283                         goto next_attr;
1284                 }
1285
1286                 if ( last == -1 ) { /* not yet counted */
1287                         last = (*ap)->a_numvals;
1288                 }
1289
1290                 if ( last == 0 ) {
1291                         /* empty? leave it in place because of attrsonly and vlv */
1292                         goto next_attr;
1293                 }
1294                 last--;
1295
1296                 if ( (*ap)->a_desc == slap_schema.si_ad_objectClass
1297                                 || (*ap)->a_desc == slap_schema.si_ad_structuralObjectClass )
1298                 {
1299                         struct berval   *bv;
1300
1301                         for ( bv = (*ap)->a_vals; !BER_BVISNULL( bv ); bv++ ) {
1302                                 struct berval   mapped;
1303
1304                                 rwm_map( &rwmap->rwm_oc, &bv[0], &mapped, RWM_REMAP );
1305                                 if ( BER_BVISNULL( &mapped ) || BER_BVISEMPTY( &mapped ) ) {
1306 remove_oc:;
1307                                         ch_free( bv[0].bv_val );
1308                                         BER_BVZERO( &bv[0] );
1309                                         if ( &(*ap)->a_vals[last] > &bv[0] ) {
1310                                                 bv[0] = (*ap)->a_vals[last];
1311                                                 BER_BVZERO( &(*ap)->a_vals[last] );
1312                                         }
1313                                         last--;
1314                                         bv--;
1315
1316                                 } else if ( mapped.bv_val != bv[0].bv_val
1317                                         && ber_bvstrcasecmp( &mapped, &bv[0] ) != 0 )
1318                                 {
1319                                         int     i;
1320
1321                                         for ( i = 0; !BER_BVISNULL( &(*ap)->a_vals[ i ] ); i++ ) {
1322                                                 if ( &(*ap)->a_vals[ i ] == bv ) {
1323                                                         continue;
1324                                                 }
1325
1326                                                 if ( ber_bvstrcasecmp( &mapped, &(*ap)->a_vals[ i ] ) == 0 ) {
1327                                                         break;
1328                                                 }
1329                                         }
1330
1331                                         if ( !BER_BVISNULL( &(*ap)->a_vals[ i ] ) ) {
1332                                                 goto remove_oc;
1333                                         }
1334
1335                                         /*
1336                                          * FIXME: after LBER_FREEing
1337                                          * the value is replaced by
1338                                          * ch_alloc'ed memory
1339                                          */
1340                                         ber_bvreplace( &bv[0], &mapped );
1341
1342                                         /* FIXME: will need to check
1343                                          * if the structuralObjectClass
1344                                          * changed */
1345                                 }
1346                         }
1347
1348                 /*
1349                  * It is necessary to try to rewrite attributes with
1350                  * dn syntax because they might be used in ACLs as
1351                  * members of groups; since ACLs are applied to the
1352                  * rewritten stuff, no dn-based subject clause could
1353                  * be used at the ldap backend side (see
1354                  * http://www.OpenLDAP.org/faq/data/cache/452.html)
1355                  * The problem can be overcome by moving the dn-based
1356                  * ACLs to the target directory server, and letting
1357                  * everything pass thru the ldap backend. */
1358                 /* FIXME: handle distinguishedName-like syntaxes, like
1359                  * nameAndOptionalUID */
1360                 } else if ( (*ap)->a_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
1361                                 || ( mapping != NULL && mapping->m_src_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
1362                 {
1363                         dc.ctx = "searchAttrDN";
1364                         rc = rwm_dnattr_result_rewrite( &dc, (*ap)->a_vals, (*ap)->a_nvals );
1365                         if ( rc != LDAP_SUCCESS ) {
1366                                 goto cleanup_attr;
1367                         }
1368
1369                 } else if ( (*ap)->a_desc == slap_schema.si_ad_ref ) {
1370                         dc.ctx = "searchAttrDN";
1371                         rc = rwm_referral_result_rewrite( &dc, (*ap)->a_vals );
1372                         if ( rc != LDAP_SUCCESS ) {
1373                                 goto cleanup_attr;
1374                         }
1375                 }
1376
1377
1378 next_attr:;
1379                 ap = &(*ap)->a_next;
1380                 continue;
1381
1382 cleanup_attr:;
1383                 a = *ap;
1384                 *ap = (*ap)->a_next;
1385
1386                 attr_free( a );
1387         }
1388
1389         /* only check if some mapping occurred */
1390         if ( check_duplicate_attrs ) {
1391                 for ( ap = a_first; *ap != NULL; ap = &(*ap)->a_next ) {
1392                         Attribute       **tap;
1393
1394                         for ( tap = &(*ap)->a_next; *tap != NULL; ) {
1395                                 if ( (*tap)->a_desc == (*ap)->a_desc ) {
1396                                         Entry           e = { 0 };
1397                                         Modification    mod = { 0 };
1398                                         const char      *text = NULL;
1399                                         char            textbuf[ SLAP_TEXT_BUFLEN ];
1400                                         Attribute       *next = (*tap)->a_next;
1401
1402                                         BER_BVSTR( &e.e_name, "" );
1403                                         BER_BVSTR( &e.e_nname, "" );
1404                                         e.e_attrs = *ap;
1405                                         mod.sm_op = LDAP_MOD_ADD;
1406                                         mod.sm_desc = (*ap)->a_desc;
1407                                         mod.sm_type = mod.sm_desc->ad_cname;
1408                                         mod.sm_numvals = (*tap)->a_numvals;
1409                                         mod.sm_values = (*tap)->a_vals;
1410                                         if ( (*tap)->a_nvals != (*tap)->a_vals ) {
1411                                                 mod.sm_nvalues = (*tap)->a_nvals;
1412                                         }
1413
1414                                         (void)modify_add_values( &e, &mod,
1415                                                 /* permissive */ 1,
1416                                                 &text, textbuf, sizeof( textbuf ) );
1417
1418                                         /* should not insert new attrs! */
1419                                         assert( e.e_attrs == *ap );
1420
1421                                         attr_free( *tap );
1422                                         *tap = next;
1423
1424                                 } else {
1425                                         tap = &(*tap)->a_next;
1426                                 }
1427                         }
1428                 }
1429         }
1430
1431         return 0;
1432 }
1433
1434 static int
1435 rwm_send_entry( Operation *op, SlapReply *rs )
1436 {
1437         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
1438         struct ldaprwmap        *rwmap =
1439                         (struct ldaprwmap *)on->on_bi.bi_private;
1440
1441         Entry                   *e = NULL;
1442         slap_mask_t             flags;
1443         struct berval           dn = BER_BVNULL,
1444                                 ndn = BER_BVNULL;
1445         dncookie                dc;
1446         int                     rc;
1447
1448         assert( rs->sr_entry != NULL );
1449
1450         /*
1451          * Rewrite the dn of the result, if needed
1452          */
1453         dc.rwmap = rwmap;
1454         dc.conn = op->o_conn;
1455         dc.rs = NULL;
1456         dc.ctx = "searchEntryDN";
1457
1458         e = rs->sr_entry;
1459         flags = rs->sr_flags;
1460         if ( !( rs->sr_flags & REP_ENTRY_MODIFIABLE ) ) {
1461                 /* FIXME: all we need to duplicate are:
1462                  * - dn
1463                  * - ndn
1464                  * - attributes that are requested
1465                  * - no values if attrsonly is set
1466                  */
1467
1468                 e = entry_dup( e );
1469                 if ( e == NULL ) {
1470                         rc = LDAP_NO_MEMORY;
1471                         goto fail;
1472                 }
1473
1474                 flags &= ~REP_ENTRY_MUSTRELEASE;
1475                 flags |= ( REP_ENTRY_MODIFIABLE | REP_ENTRY_MUSTBEFREED );
1476         }
1477
1478         /*
1479          * Note: this may fail if the target host(s) schema differs
1480          * from the one known to the meta, and a DN with unknown
1481          * attributes is returned.
1482          */
1483         dn = e->e_name;
1484         ndn = e->e_nname;
1485         rc = rwm_dn_massage_pretty_normalize( &dc, &e->e_name, &dn, &ndn );
1486         if ( rc != LDAP_SUCCESS ) {
1487                 rc = 1;
1488                 goto fail;
1489         }
1490
1491         if ( e->e_name.bv_val != dn.bv_val ) {
1492                 ch_free( e->e_name.bv_val );
1493                 ch_free( e->e_nname.bv_val );
1494
1495                 e->e_name = dn;
1496                 e->e_nname = ndn;
1497         }
1498
1499         /* TODO: map entry attribute types, objectclasses
1500          * and dn-valued attribute values */
1501
1502         /* FIXME: the entries are in the remote mapping form;
1503          * so we need to select those attributes we are willing
1504          * to return, and remap them accordingly */
1505         (void)rwm_attrs( op, rs, &e->e_attrs, 1 );
1506
1507         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1508                 /* ITS#6423: REP_ENTRY_MUSTRELEASE incompatible
1509                  * with REP_ENTRY_MODIFIABLE */
1510                 if ( rs->sr_entry == e ) {
1511                         rc = 1;
1512                         goto fail;
1513                 }
1514
1515                 overlay_entry_release_ov( op, rs->sr_entry, 0, on );
1516         }
1517
1518         rs->sr_entry = e;
1519         rs->sr_flags = flags;
1520
1521         return SLAP_CB_CONTINUE;
1522
1523 fail:;
1524         if ( e != NULL && e != rs->sr_entry ) {
1525                 if ( e->e_name.bv_val == dn.bv_val ) {
1526                         BER_BVZERO( &e->e_name );
1527                 }
1528
1529                 if ( e->e_nname.bv_val == ndn.bv_val ) {
1530                         BER_BVZERO( &e->e_nname );
1531                 }
1532
1533                 entry_free( e );
1534         }
1535
1536         if ( !BER_BVISNULL( &dn ) ) {
1537                 ch_free( dn.bv_val );
1538         }
1539
1540         if ( !BER_BVISNULL( &ndn ) ) {
1541                 ch_free( ndn.bv_val );
1542         }
1543
1544         return rc;
1545 }
1546
1547 static int
1548 rwm_operational( Operation *op, SlapReply *rs )
1549 {
1550         /* FIXME: the entries are in the remote mapping form;
1551          * so we need to select those attributes we are willing
1552          * to return, and remap them accordingly */
1553         if ( rs->sr_operational_attrs ) {
1554                 rwm_attrs( op, rs, &rs->sr_operational_attrs, 1 );
1555         }
1556
1557         return SLAP_CB_CONTINUE;
1558 }
1559
1560 #if 0
1561 /* don't use this; it cannot be reverted, and leaves op->o_req_dn
1562  * rewritten for subsequent operations; fine for plain suffixmassage,
1563  * but destroys everything else */
1564 static int
1565 rwm_chk_referrals( Operation *op, SlapReply *rs )
1566 {
1567         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
1568         int                     rc;
1569
1570         rc = rwm_op_dn_massage( op, rs, "referralCheckDN" );
1571         if ( rc != LDAP_SUCCESS ) {
1572                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1573                 send_ldap_error( op, rs, rc, "referralCheckDN massage error" );
1574                 return -1;
1575         }
1576
1577         return SLAP_CB_CONTINUE;
1578 }
1579 #endif
1580
1581 static int
1582 rwm_rw_config(
1583         BackendDB       *be,
1584         const char      *fname,
1585         int             lineno,
1586         int             argc,
1587         char            **argv )
1588 {
1589         slap_overinst           *on = (slap_overinst *) be->bd_info;
1590         struct ldaprwmap        *rwmap =
1591                         (struct ldaprwmap *)on->on_bi.bi_private;
1592
1593         return rewrite_parse( rwmap->rwm_rw,
1594                                 fname, lineno, argc, argv );
1595
1596         return 0;
1597 }
1598
1599 static int
1600 rwm_suffixmassage_config(
1601         BackendDB       *be,
1602         const char      *fname,
1603         int             lineno,
1604         int             argc,
1605         char            **argv )
1606 {
1607         slap_overinst           *on = (slap_overinst *) be->bd_info;
1608         struct ldaprwmap        *rwmap =
1609                         (struct ldaprwmap *)on->on_bi.bi_private;
1610
1611         struct berval           bvnc, nvnc, pvnc, brnc, nrnc, prnc;
1612         int                     massaged;
1613         int                     rc;
1614
1615         /*
1616          * syntax:
1617          *
1618          *      suffixmassage [<suffix>] <massaged suffix>
1619          *
1620          * the [<suffix>] field must be defined as a valid suffix
1621          * for the current database;
1622          * the <massaged suffix> shouldn't have already been
1623          * defined as a valid suffix for the current server
1624          */
1625         if ( argc == 2 ) {
1626                 if ( be->be_suffix == NULL ) {
1627                         fprintf( stderr, "%s: line %d: "
1628                                        " \"suffixMassage [<suffix>]"
1629                                        " <massaged suffix>\" without "
1630                                        "<suffix> part requires database "
1631                                        "suffix be defined first.\n",
1632                                 fname, lineno );
1633                         return 1;
1634                 }
1635                 bvnc = be->be_suffix[ 0 ];
1636                 massaged = 1;
1637
1638         } else if ( argc == 3 ) {
1639                 ber_str2bv( argv[ 1 ], 0, 0, &bvnc );
1640                 massaged = 2;
1641
1642         } else  {
1643                 fprintf( stderr, "%s: line %d: syntax is"
1644                                " \"suffixMassage [<suffix>]"
1645                                " <massaged suffix>\"\n",
1646                         fname, lineno );
1647                 return 1;
1648         }
1649
1650         if ( dnPrettyNormal( NULL, &bvnc, &pvnc, &nvnc, NULL ) != LDAP_SUCCESS ) {
1651                 fprintf( stderr, "%s: line %d: suffix DN %s is invalid\n",
1652                         fname, lineno, bvnc.bv_val );
1653                 return 1;
1654         }
1655
1656         ber_str2bv( argv[ massaged ], 0, 0, &brnc );
1657         if ( dnPrettyNormal( NULL, &brnc, &prnc, &nrnc, NULL ) != LDAP_SUCCESS ) {
1658                 fprintf( stderr, "%s: line %d: suffix DN %s is invalid\n",
1659                                 fname, lineno, brnc.bv_val );
1660                 free( nvnc.bv_val );
1661                 free( pvnc.bv_val );
1662                 return 1;
1663         }
1664
1665         /*
1666          * The suffix massaging is emulated
1667          * by means of the rewrite capabilities
1668          */
1669         rc = rwm_suffix_massage_config( rwmap->rwm_rw,
1670                         &pvnc, &nvnc, &prnc, &nrnc );
1671         free( nvnc.bv_val );
1672         free( pvnc.bv_val );
1673         free( nrnc.bv_val );
1674         free( prnc.bv_val );
1675
1676         return rc;
1677 }
1678
1679 static int
1680 rwm_m_config(
1681         BackendDB       *be,
1682         const char      *fname,
1683         int             lineno,
1684         int             argc,
1685         char            **argv )
1686 {
1687         slap_overinst           *on = (slap_overinst *) be->bd_info;
1688         struct ldaprwmap        *rwmap =
1689                         (struct ldaprwmap *)on->on_bi.bi_private;
1690
1691         /* objectclass/attribute mapping */
1692         return rwm_map_config( &rwmap->rwm_oc,
1693                         &rwmap->rwm_at,
1694                         fname, lineno, argc, argv );
1695 }
1696
1697 static int
1698 rwm_response( Operation *op, SlapReply *rs )
1699 {
1700         slap_overinst           *on = (slap_overinst *)op->o_bd->bd_info;
1701         struct ldaprwmap        *rwmap =
1702                         (struct ldaprwmap *)on->on_bi.bi_private;
1703
1704         int             rc;
1705
1706         if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH ) {
1707                 return rwm_send_entry( op, rs );
1708         }
1709
1710         switch( op->o_tag ) {
1711         case LDAP_REQ_SEARCH:
1712         case LDAP_REQ_BIND:
1713         case LDAP_REQ_ADD:
1714         case LDAP_REQ_DELETE:
1715         case LDAP_REQ_MODRDN:
1716         case LDAP_REQ_MODIFY:
1717         case LDAP_REQ_COMPARE:
1718         case LDAP_REQ_EXTENDED:
1719                 if ( rs->sr_ref ) {
1720                         dncookie                dc;
1721
1722                         /*
1723                          * Rewrite the dn of the referrals, if needed
1724                          */
1725                         dc.rwmap = rwmap;
1726                         dc.conn = op->o_conn;
1727                         dc.rs = NULL;
1728                         dc.ctx = "referralDN";
1729                         rc = rwm_referral_result_rewrite( &dc, rs->sr_ref );
1730                         if ( rc != LDAP_SUCCESS ) {
1731                                 rc = 1;
1732                                 break;
1733                         }
1734                 }
1735                 rc = rwm_matched( op, rs );
1736                 break;
1737
1738         default:
1739                 rc = SLAP_CB_CONTINUE;
1740                 break;
1741         }
1742
1743         return rc;
1744 }
1745
1746 static int
1747 rwm_db_config(
1748         BackendDB       *be,
1749         const char      *fname,
1750         int             lineno,
1751         int             argc,
1752         char            **argv )
1753 {
1754         slap_overinst           *on = (slap_overinst *) be->bd_info;
1755         struct ldaprwmap        *rwmap =
1756                         (struct ldaprwmap *)on->on_bi.bi_private;
1757
1758         int             rc = 0;
1759         char            *argv0 = NULL;
1760
1761         if ( strncasecmp( argv[ 0 ], "rwm-", STRLENOF( "rwm-" ) ) == 0 ) {
1762                 argv0 = argv[ 0 ];
1763                 argv[ 0 ] = &argv0[ STRLENOF( "rwm-" ) ];
1764         }
1765
1766         if ( strncasecmp( argv[0], "rewrite", STRLENOF("rewrite") ) == 0 ) {
1767                 rc = rwm_rw_config( be, fname, lineno, argc, argv );
1768
1769         } else if ( strcasecmp( argv[0], "map" ) == 0 ) {
1770                 rc = rwm_m_config( be, fname, lineno, argc, argv );
1771
1772         } else if ( strcasecmp( argv[0], "suffixmassage" ) == 0 ) {
1773                 rc = rwm_suffixmassage_config( be, fname, lineno, argc, argv );
1774
1775         } else if ( strcasecmp( argv[0], "t-f-support" ) == 0 ) {
1776                 if ( argc != 2 ) {
1777                         fprintf( stderr,
1778                 "%s: line %d: \"t-f-support {no|yes|discover}\" needs 1 argument.\n",
1779                                         fname, lineno );
1780                         return( 1 );
1781                 }
1782
1783                 if ( strcasecmp( argv[ 1 ], "no" ) == 0 ) {
1784                         rwmap->rwm_flags &= ~(RWM_F_SUPPORT_T_F_MASK2);
1785
1786                 } else if ( strcasecmp( argv[ 1 ], "yes" ) == 0 ) {
1787                         rwmap->rwm_flags |= RWM_F_SUPPORT_T_F;
1788
1789                 /* TODO: not implemented yet */
1790                 } else if ( strcasecmp( argv[ 1 ], "discover" ) == 0 ) {
1791                         fprintf( stderr,
1792                 "%s: line %d: \"discover\" not supported yet "
1793                 "in \"t-f-support {no|yes|discover}\".\n",
1794                                         fname, lineno );
1795                         return( 1 );
1796 #if 0
1797                         rwmap->rwm_flags |= RWM_F_SUPPORT_T_F_DISCOVER;
1798 #endif
1799
1800                 } else {
1801                         fprintf( stderr,
1802         "%s: line %d: unknown value \"%s\" for \"t-f-support {no|yes|discover}\".\n",
1803                                 fname, lineno, argv[ 1 ] );
1804                         return 1;
1805                 }
1806
1807         } else if ( strcasecmp( argv[0], "normalize-mapped-attrs" ) ==  0 ) {
1808                 if ( argc !=2 ) {
1809                         fprintf( stderr,
1810                 "%s: line %d: \"normalize-mapped-attrs {no|yes}\" needs 1 argument.\n",
1811                                         fname, lineno );
1812                         return( 1 );
1813                 }
1814
1815                 if ( strcasecmp( argv[ 1 ], "no" ) == 0 ) {
1816                         rwmap->rwm_flags &= ~(RWM_F_NORMALIZE_MAPPED_ATTRS);
1817
1818                 } else if ( strcasecmp( argv[ 1 ], "yes" ) == 0 ) {
1819                         rwmap->rwm_flags |= RWM_F_NORMALIZE_MAPPED_ATTRS;
1820                 }
1821
1822         } else {
1823                 rc = SLAP_CONF_UNKNOWN;
1824         }
1825
1826         if ( argv0 ) {
1827                 argv[ 0 ] = argv0;
1828         }
1829
1830         return rc;
1831 }
1832
1833 /*
1834  * dynamic configuration...
1835  */
1836
1837 enum {
1838         /* rewrite */
1839         RWM_CF_REWRITE = 1,
1840
1841         /* map */
1842         RWM_CF_MAP,
1843         RWM_CF_T_F_SUPPORT,
1844         RWM_CF_NORMALIZE_MAPPED,
1845         RWM_CF_DROP_UNREQUESTED,
1846
1847         RWM_CF_LAST
1848 };
1849
1850 static slap_verbmasks t_f_mode[] = {
1851         { BER_BVC( "true" ),            RWM_F_SUPPORT_T_F },
1852         { BER_BVC( "yes" ),             RWM_F_SUPPORT_T_F },
1853         { BER_BVC( "discover" ),        RWM_F_SUPPORT_T_F_DISCOVER },
1854         { BER_BVC( "false" ),           RWM_F_NONE },
1855         { BER_BVC( "no" ),              RWM_F_NONE },
1856         { BER_BVNULL,                   0 }
1857 };
1858
1859 static ConfigDriver rwm_cf_gen;
1860
1861 static ConfigTable rwmcfg[] = {
1862         { "rwm-rewrite", "rewrite",
1863                 2, 0, STRLENOF("rwm-rewrite"),
1864                 ARG_MAGIC|RWM_CF_REWRITE, rwm_cf_gen,
1865                 "( OLcfgOvAt:16.1 NAME 'olcRwmRewrite' "
1866                         "DESC 'Rewrites strings' "
1867                         "EQUALITY caseIgnoreMatch "
1868                         "SYNTAX OMsDirectoryString "
1869                         "X-ORDERED 'VALUES' )",
1870                 NULL, NULL },
1871
1872         { "rwm-suffixmassage", "[virtual]> <real",
1873                 2, 3, 0, ARG_MAGIC|RWM_CF_REWRITE, rwm_cf_gen,
1874                 NULL, NULL, NULL },
1875
1876         { "rwm-t-f-support", "true|false|discover",
1877                 2, 2, 0, ARG_MAGIC|RWM_CF_T_F_SUPPORT, rwm_cf_gen,
1878                 "( OLcfgOvAt:16.2 NAME 'olcRwmTFSupport' "
1879                         "DESC 'Absolute filters support' "
1880                         "SYNTAX OMsDirectoryString "
1881                         "SINGLE-VALUE )",
1882                 NULL, NULL },
1883
1884         { "rwm-map", "{objectClass|attribute}",
1885                 2, 4, 0, ARG_MAGIC|RWM_CF_MAP, rwm_cf_gen,
1886                 "( OLcfgOvAt:16.3 NAME 'olcRwmMap' "
1887                         "DESC 'maps attributes/objectClasses' "
1888                         "EQUALITY caseIgnoreMatch "
1889                         "SYNTAX OMsDirectoryString "
1890                         "X-ORDERED 'VALUES' )",
1891                 NULL, NULL },
1892
1893         { "rwm-normalize-mapped-attrs", "true|false",
1894                 2, 2, 0, ARG_MAGIC|ARG_ON_OFF|RWM_CF_NORMALIZE_MAPPED, rwm_cf_gen,
1895                 "( OLcfgOvAt:16.4 NAME 'olcRwmNormalizeMapped' "
1896                         "DESC 'Normalize mapped attributes/objectClasses' "
1897                         "SYNTAX OMsBoolean "
1898                         "SINGLE-VALUE )",
1899                 NULL, NULL },
1900
1901         { "rwm-drop-unrequested-attrs", "true|false",
1902                 2, 2, 0, ARG_MAGIC|ARG_ON_OFF|RWM_CF_DROP_UNREQUESTED, rwm_cf_gen,
1903                 "( OLcfgOvAt:16.5 NAME 'olcRwmDropUnrequested' "
1904                         "DESC 'Drop unrequested attributes' "
1905                         "SYNTAX OMsBoolean "
1906                         "SINGLE-VALUE )",
1907                 NULL, NULL },
1908
1909         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
1910 };
1911
1912 static ConfigOCs rwmocs[] = {
1913         { "( OLcfgOvOc:16.1 "
1914                 "NAME 'olcRwmConfig' "
1915                 "DESC 'Rewrite/remap configuration' "
1916                 "SUP olcOverlayConfig "
1917                 "MAY ( "
1918                         "olcRwmRewrite $ "
1919                         "olcRwmTFSupport $ "
1920                         "olcRwmMap $ "
1921                         "olcRwmNormalizeMapped "
1922                         ") )",
1923                 Cft_Overlay, rwmcfg, NULL, NULL },
1924         { NULL, 0, NULL }
1925 };
1926
1927 static void
1928 slap_bv_x_ordered_unparse( BerVarray in, BerVarray *out )
1929 {
1930         int             i;
1931         BerVarray       bva = NULL;
1932         char            ibuf[32], *ptr;
1933         struct berval   idx;
1934
1935         assert( in != NULL );
1936
1937         for ( i = 0; !BER_BVISNULL( &in[i] ); i++ )
1938                 /* count'em */ ;
1939
1940         if ( i == 0 ) {
1941                 return;
1942         }
1943
1944         idx.bv_val = ibuf;
1945
1946         bva = ch_malloc( ( i + 1 ) * sizeof(struct berval) );
1947         BER_BVZERO( &bva[ 0 ] );
1948
1949         for ( i = 0; !BER_BVISNULL( &in[i] ); i++ ) {
1950                 idx.bv_len = snprintf( idx.bv_val, sizeof( ibuf ), "{%d}", i );
1951                 if ( idx.bv_len >= sizeof( ibuf ) ) {
1952                         ber_bvarray_free( bva );
1953                         return;
1954                 }
1955
1956                 bva[i].bv_len = idx.bv_len + in[i].bv_len;
1957                 bva[i].bv_val = ch_malloc( bva[i].bv_len + 1 );
1958                 ptr = lutil_strcopy( bva[i].bv_val, ibuf );
1959                 ptr = lutil_strcopy( ptr, in[i].bv_val );
1960                 *ptr = '\0';
1961                 BER_BVZERO( &bva[ i + 1 ] );
1962         }
1963
1964         *out = bva;
1965 }
1966
1967 static int
1968 rwm_bva_add(
1969         BerVarray               *bva,
1970         int                     idx,
1971         char                    **argv )
1972 {
1973         char            *line;
1974         struct berval   bv;
1975
1976         line = ldap_charray2str( argv, "\" \"" );
1977         if ( line != NULL ) {
1978                 int     len = strlen( argv[ 0 ] );
1979
1980                 ber_str2bv( line, 0, 0, &bv );
1981                 AC_MEMCPY( &bv.bv_val[ len ], &bv.bv_val[ len + 1 ],
1982                         bv.bv_len - ( len + 1 ) );
1983                 bv.bv_val[ bv.bv_len - 1 ] = '"';
1984
1985                 if ( idx == -1 ) {
1986                         ber_bvarray_add( bva, &bv );
1987
1988                 } else {
1989                         (*bva)[ idx ] = bv;
1990                 }
1991
1992                 return 0;
1993         }
1994
1995         return -1;
1996 }
1997
1998 static int
1999 rwm_bva_rewrite_add(
2000         struct ldaprwmap        *rwmap,
2001         int                     idx,
2002         char                    **argv )
2003 {
2004         return rwm_bva_add( &rwmap->rwm_bva_rewrite, idx, argv );
2005 }
2006
2007 static int
2008 rwm_bva_map_add(
2009         struct ldaprwmap        *rwmap,
2010         int                     idx,
2011         char                    **argv )
2012 {
2013         return rwm_bva_add( &rwmap->rwm_bva_map, idx, argv );
2014 }
2015
2016 static int
2017 rwm_info_init( struct rewrite_info ** rwm_rw )
2018 {
2019         char                    *rargv[ 3 ];
2020
2021         *rwm_rw = rewrite_info_init( REWRITE_MODE_USE_DEFAULT );
2022         if ( *rwm_rw == NULL ) {
2023                 return -1;
2024         }
2025
2026         /* this rewriteContext by default must be null;
2027          * rules can be added if required */
2028         rargv[ 0 ] = "rewriteContext";
2029         rargv[ 1 ] = "searchFilter";
2030         rargv[ 2 ] = NULL;
2031         rewrite_parse( *rwm_rw, "<suffix massage>", 1, 2, rargv );
2032
2033         rargv[ 0 ] = "rewriteContext";
2034         rargv[ 1 ] = "default";
2035         rargv[ 2 ] = NULL;
2036         rewrite_parse( *rwm_rw, "<suffix massage>", 2, 2, rargv );
2037
2038         return 0;
2039 }
2040
2041 static int
2042 rwm_cf_gen( ConfigArgs *c )
2043 {
2044         slap_overinst           *on = (slap_overinst *)c->bi;
2045         struct ldaprwmap        *rwmap =
2046                         (struct ldaprwmap *)on->on_bi.bi_private;
2047
2048         BackendDB               db;
2049         char                    *argv0;
2050         int                     idx0 = 0;
2051         int                     rc = 0;
2052
2053         db = *c->be;
2054         db.bd_info = c->bi;
2055
2056         if ( c->op == SLAP_CONFIG_EMIT ) {
2057                 struct berval   bv = BER_BVNULL;
2058
2059                 switch ( c->type ) {
2060                 case RWM_CF_REWRITE:
2061                         if ( rwmap->rwm_bva_rewrite == NULL ) {
2062                                 rc = 1;
2063
2064                         } else {
2065                                 slap_bv_x_ordered_unparse( rwmap->rwm_bva_rewrite, &c->rvalue_vals );
2066                                 if ( !c->rvalue_vals ) {
2067                                         rc = 1;
2068                                 }
2069                         }
2070                         break;
2071
2072                 case RWM_CF_T_F_SUPPORT:
2073                         enum_to_verb( t_f_mode, (rwmap->rwm_flags & RWM_F_SUPPORT_T_F_MASK2), &bv );
2074                         if ( BER_BVISNULL( &bv ) ) {
2075                                 /* there's something wrong... */
2076                                 assert( 0 );
2077                                 rc = 1;
2078
2079                         } else {
2080                                 value_add_one( &c->rvalue_vals, &bv );
2081                         }
2082                         break;
2083
2084                 case RWM_CF_MAP:
2085                         if ( rwmap->rwm_bva_map == NULL ) {
2086                                 rc = 1;
2087
2088                         } else {
2089                                 slap_bv_x_ordered_unparse( rwmap->rwm_bva_map, &c->rvalue_vals );
2090                                 if ( !c->rvalue_vals ) {
2091                                         rc = 1;
2092                                 }
2093                         }
2094                         break;
2095
2096                 case RWM_CF_NORMALIZE_MAPPED:
2097                         c->value_int = ( rwmap->rwm_flags & RWM_F_NORMALIZE_MAPPED_ATTRS );
2098                         break;
2099
2100                 case RWM_CF_DROP_UNREQUESTED:
2101                         c->value_int = ( rwmap->rwm_flags & RWM_F_DROP_UNREQUESTED_ATTRS );
2102                         break;
2103
2104                 default:
2105                         assert( 0 );
2106                         rc = 1;
2107                 }
2108
2109                 return rc;
2110
2111         } else if ( c->op == LDAP_MOD_DELETE ) {
2112                 switch ( c->type ) {
2113                 case RWM_CF_REWRITE:
2114                         if ( c->valx >= 0 ) {
2115                                 ConfigArgs ca = { 0 };
2116                                 int i;
2117
2118                                 for ( i = 0; !BER_BVISNULL( &rwmap->rwm_bva_rewrite[ i ] ); i++ )
2119                                         /* count'em */ ;
2120
2121                                 if ( c->valx >= i ) {
2122                                         rc = 1;
2123                                         break;
2124                                 }
2125
2126                                 ber_memfree( rwmap->rwm_bva_rewrite[ c->valx ].bv_val );
2127                                 for ( i = c->valx; !BER_BVISNULL( &rwmap->rwm_bva_rewrite[ i + 1 ] ); i++ )
2128                                 {
2129                                         rwmap->rwm_bva_rewrite[ i ] = rwmap->rwm_bva_rewrite[ i + 1 ];
2130                                 }
2131                                 BER_BVZERO( &rwmap->rwm_bva_rewrite[ i ] );
2132
2133                                 rewrite_info_delete( &rwmap->rwm_rw );
2134                                 assert( rwmap->rwm_rw == NULL );
2135
2136                                 rc = rwm_info_init( &rwmap->rwm_rw );
2137
2138                                 for ( i = 0; !BER_BVISNULL( &rwmap->rwm_bva_rewrite[ i ] ); i++ )
2139                                 {
2140                                         ca.line = rwmap->rwm_bva_rewrite[ i ].bv_val;
2141                                         ca.argc = 0;
2142                                         config_fp_parse_line( &ca );
2143
2144                                         if ( strcasecmp( ca.argv[ 0 ], "suffixmassage" ) == 0 ) {
2145                                                 rc = rwm_suffixmassage_config( &db, c->fname, c->lineno,
2146                                                         ca.argc, ca.argv );
2147
2148                                         } else {
2149                                                 rc = rwm_rw_config( &db, c->fname, c->lineno,
2150                                                         ca.argc, ca.argv );
2151                                         }
2152
2153                                         ch_free( ca.tline );
2154                                         ch_free( ca.argv );
2155
2156                                         assert( rc == 0 );
2157                                 }
2158
2159                         } else if ( rwmap->rwm_rw != NULL ) {
2160                                 rewrite_info_delete( &rwmap->rwm_rw );
2161                                 assert( rwmap->rwm_rw == NULL );
2162
2163                                 ber_bvarray_free( rwmap->rwm_bva_rewrite );
2164                                 rwmap->rwm_bva_rewrite = NULL;
2165
2166                                 rc = rwm_info_init( &rwmap->rwm_rw );
2167                         }
2168                         break;
2169
2170                 case RWM_CF_T_F_SUPPORT:
2171                         rwmap->rwm_flags &= ~RWM_F_SUPPORT_T_F_MASK2;
2172                         break;
2173
2174                 case RWM_CF_MAP:
2175                         if ( c->valx >= 0 ) {
2176                                 struct ldapmap rwm_oc = rwmap->rwm_oc;
2177                                 struct ldapmap rwm_at = rwmap->rwm_at;
2178                                 char *argv[5];
2179                                 int cnt = 0;
2180
2181                                 if ( rwmap->rwm_bva_map ) {
2182                                         for ( ; !BER_BVISNULL( &rwmap->rwm_bva_map[ cnt ] ); cnt++ )
2183                                                 /* count */ ;
2184                                 }
2185
2186                                 if ( c->valx >= cnt ) {
2187                                         rc = 1;
2188                                         break;
2189                                 }
2190
2191                                 memset( &rwmap->rwm_oc, 0, sizeof( rwmap->rwm_oc ) );
2192                                 memset( &rwmap->rwm_at, 0, sizeof( rwmap->rwm_at ) );
2193
2194                                 /* re-parse all mappings except the one
2195                                  * that needs to be eliminated */
2196                                 argv[0] = "map";
2197                                 for ( cnt = 0; !BER_BVISNULL( &rwmap->rwm_bva_map[ cnt ] ); cnt++ ) {
2198                                         ConfigArgs ca = { 0 };
2199
2200                                         if ( cnt == c->valx ) {
2201                                                 continue;
2202                                         }
2203
2204                                         ca.line = rwmap->rwm_bva_map[ cnt ].bv_val;
2205                                         ca.argc = 0;
2206                                         config_fp_parse_line( &ca );
2207
2208                                         argv[1] = ca.argv[0];
2209                                         argv[2] = ca.argv[1];
2210                                         argv[3] = ca.argv[2];
2211                                         argv[4] = ca.argv[3];
2212
2213                                         rc = rwm_m_config( &db, c->fname, c->lineno, ca.argc + 1, argv );
2214
2215                                         ch_free( ca.tline );
2216                                         ch_free( ca.argv );
2217
2218                                         /* in case of failure, restore
2219                                          * the existing mapping */
2220                                         if ( rc ) {
2221                                                 avl_free( rwmap->rwm_oc.remap, rwm_mapping_dst_free );
2222                                                 avl_free( rwmap->rwm_oc.map, rwm_mapping_free );
2223                                                 avl_free( rwmap->rwm_at.remap, rwm_mapping_dst_free );
2224                                                 avl_free( rwmap->rwm_at.map, rwm_mapping_free );
2225                                                 rwmap->rwm_oc = rwm_oc;
2226                                                 rwmap->rwm_at = rwm_at;
2227                                                 break;
2228                                         }
2229                                 }
2230
2231                                 /* in case of success, destroy the old mapping
2232                                  * and eliminate the deleted one */
2233                                 if ( rc == 0 ) {
2234                                         avl_free( rwm_oc.remap, rwm_mapping_dst_free );
2235                                         avl_free( rwm_oc.map, rwm_mapping_free );
2236                                         avl_free( rwm_at.remap, rwm_mapping_dst_free );
2237                                         avl_free( rwm_at.map, rwm_mapping_free );
2238
2239                                         ber_memfree( rwmap->rwm_bva_map[ c->valx ].bv_val );
2240                                         for ( cnt = c->valx; !BER_BVISNULL( &rwmap->rwm_bva_map[ cnt ] ); cnt++ ) {
2241                                                 rwmap->rwm_bva_map[ cnt ] = rwmap->rwm_bva_map[ cnt + 1 ];
2242                                         }
2243                                 }
2244
2245                         } else {
2246                                 avl_free( rwmap->rwm_oc.remap, rwm_mapping_dst_free );
2247                                 avl_free( rwmap->rwm_oc.map, rwm_mapping_free );
2248                                 avl_free( rwmap->rwm_at.remap, rwm_mapping_dst_free );
2249                                 avl_free( rwmap->rwm_at.map, rwm_mapping_free );
2250
2251                                 rwmap->rwm_oc.remap = NULL;
2252                                 rwmap->rwm_oc.map = NULL;
2253                                 rwmap->rwm_at.remap = NULL;
2254                                 rwmap->rwm_at.map = NULL;
2255
2256                                 ber_bvarray_free( rwmap->rwm_bva_map );
2257                                 rwmap->rwm_bva_map = NULL;
2258                         }
2259                         break;
2260
2261                 case RWM_CF_NORMALIZE_MAPPED:
2262                         rwmap->rwm_flags &= ~RWM_F_NORMALIZE_MAPPED_ATTRS;
2263                         break;
2264
2265                 case RWM_CF_DROP_UNREQUESTED:
2266                         rwmap->rwm_flags &= ~RWM_F_DROP_UNREQUESTED_ATTRS;
2267                         break;
2268
2269                 default:
2270                         return 1;
2271                 }
2272                 return rc;
2273         }
2274
2275         if ( strncasecmp( c->argv[ 0 ], "olcRwm", STRLENOF( "olcRwm" ) ) == 0 ) {
2276                 idx0 = 1;
2277         }
2278
2279         switch ( c->type ) {
2280         case RWM_CF_REWRITE:
2281                 if ( c->valx >= 0 ) {
2282                         struct rewrite_info *rwm_rw = rwmap->rwm_rw;
2283                         ConfigArgs ca = { 0 };
2284                         int i, last;
2285
2286                         for ( last = 0; rwmap->rwm_bva_rewrite && !BER_BVISNULL( &rwmap->rwm_bva_rewrite[ last ] ); last++ )
2287                                 /* count'em */ ;
2288
2289                         if ( c->valx > last ) {
2290                                 c->valx = last;
2291                         }
2292
2293                         rwmap->rwm_rw = NULL;
2294                         rc = rwm_info_init( &rwmap->rwm_rw );
2295
2296                         for ( i = 0; i < c->valx; i++ ) {
2297                                 ca.line = rwmap->rwm_bva_rewrite[ i ].bv_val;
2298                                 ca.argc = 0;
2299                                 config_fp_parse_line( &ca );
2300
2301                                 argv0 = ca.argv[ 0 ];
2302                                 ca.argv[ 0 ] += STRLENOF( "rwm-" );
2303
2304                                 if ( strcasecmp( ca.argv[ 0 ], "suffixmassage" ) == 0 ) {
2305                                         rc = rwm_suffixmassage_config( &db, c->fname, c->lineno,
2306                                                 ca.argc, ca.argv );
2307
2308                                 } else {
2309                                         rc = rwm_rw_config( &db, c->fname, c->lineno,
2310                                                 ca.argc, ca.argv );
2311                                 }
2312
2313                                 ca.argv[ 0 ] = argv0;
2314
2315                                 ch_free( ca.tline );
2316                                 ch_free( ca.argv );
2317
2318                                 assert( rc == 0 );
2319                         }
2320
2321                         argv0 = c->argv[ idx0 ];
2322                         if ( strncasecmp( argv0, "rwm-", STRLENOF( "rwm-" ) ) != 0 ) {
2323                                 return 1;
2324                         }
2325                         c->argv[ idx0 ] += STRLENOF( "rwm-" );
2326                         if ( strcasecmp( c->argv[ idx0 ], "suffixmassage" ) == 0 ) {
2327                                 rc = rwm_suffixmassage_config( &db, c->fname, c->lineno,
2328                                         c->argc - idx0, &c->argv[ idx0 ] );
2329
2330                         } else {
2331                                 rc = rwm_rw_config( &db, c->fname, c->lineno,
2332                                         c->argc - idx0, &c->argv[ idx0 ] );
2333                         }
2334                         c->argv[ idx0 ] = argv0;
2335                         if ( rc != 0 ) {
2336                                 rewrite_info_delete( &rwmap->rwm_rw );
2337                                 assert( rwmap->rwm_rw == NULL );
2338
2339                                 rwmap->rwm_rw = rwm_rw;
2340                                 return 1;
2341                         }
2342
2343                         for ( i = c->valx; rwmap->rwm_bva_rewrite && !BER_BVISNULL( &rwmap->rwm_bva_rewrite[ i ] ); i++ )
2344                         {
2345                                 ca.line = rwmap->rwm_bva_rewrite[ i ].bv_val;
2346                                 ca.argc = 0;
2347                                 config_fp_parse_line( &ca );
2348
2349                                 argv0 = ca.argv[ 0 ];
2350                                 ca.argv[ 0 ] += STRLENOF( "rwm-" );
2351
2352                                 if ( strcasecmp( ca.argv[ 0 ], "suffixmassage" ) == 0 ) {
2353                                         rc = rwm_suffixmassage_config( &db, c->fname, c->lineno,
2354                                                 ca.argc, ca.argv );
2355
2356                                 } else {
2357                                         rc = rwm_rw_config( &db, c->fname, c->lineno,
2358                                                 ca.argc, ca.argv );
2359                                 }
2360
2361                                 ca.argv[ 0 ] = argv0;
2362
2363                                 ch_free( ca.tline );
2364                                 ch_free( ca.argv );
2365
2366                                 assert( rc == 0 );
2367                         }
2368
2369                         rwmap->rwm_bva_rewrite = ch_realloc( rwmap->rwm_bva_rewrite,
2370                                 ( last + 2 )*sizeof( struct berval ) );
2371                         BER_BVZERO( &rwmap->rwm_bva_rewrite[last+1] );
2372
2373                         for ( i = last - 1; i >= c->valx; i-- )
2374                         {
2375                                 rwmap->rwm_bva_rewrite[ i + 1 ] = rwmap->rwm_bva_rewrite[ i ];
2376                         }
2377
2378                         rwm_bva_rewrite_add( rwmap, c->valx, &c->argv[ idx0 ] );
2379
2380                         rewrite_info_delete( &rwm_rw );
2381                         assert( rwm_rw == NULL );
2382
2383                         break;
2384                 }
2385
2386                 argv0 = c->argv[ idx0 ];
2387                 if ( strncasecmp( argv0, "rwm-", STRLENOF( "rwm-" ) ) != 0 ) {
2388                         return 1;
2389                 }
2390                 c->argv[ idx0 ] += STRLENOF( "rwm-" );
2391                 if ( strcasecmp( c->argv[ idx0 ], "suffixmassage" ) == 0 ) {
2392                         rc = rwm_suffixmassage_config( &db, c->fname, c->lineno,
2393                                 c->argc - idx0, &c->argv[ idx0 ] );
2394
2395                 } else {
2396                         rc = rwm_rw_config( &db, c->fname, c->lineno,
2397                                 c->argc - idx0, &c->argv[ idx0 ] );
2398                 }
2399                 c->argv[ idx0 ] = argv0;
2400                 if ( rc ) {
2401                         return 1;
2402
2403                 } else {
2404                         rwm_bva_rewrite_add( rwmap, -1, &c->argv[ idx0 ] );
2405                 }
2406                 break;
2407
2408         case RWM_CF_T_F_SUPPORT:
2409                 rc = verb_to_mask( c->argv[ 1 ], t_f_mode );
2410                 if ( BER_BVISNULL( &t_f_mode[ rc ].word ) ) {
2411                         return 1;
2412                 }
2413
2414                 rwmap->rwm_flags &= ~RWM_F_SUPPORT_T_F_MASK2;
2415                 rwmap->rwm_flags |= t_f_mode[ rc ].mask;
2416                 rc = 0;
2417                 break;
2418
2419         case RWM_CF_MAP:
2420                 if ( c->valx >= 0 ) {
2421                         struct ldapmap rwm_oc = rwmap->rwm_oc;
2422                         struct ldapmap rwm_at = rwmap->rwm_at;
2423                         char *argv[5];
2424                         int cnt = 0;
2425
2426                         if ( rwmap->rwm_bva_map ) {
2427                                 for ( ; !BER_BVISNULL( &rwmap->rwm_bva_map[ cnt ] ); cnt++ )
2428                                         /* count */ ;
2429                         }
2430
2431                         if ( c->valx >= cnt ) {
2432                                 c->valx = cnt;
2433                         }
2434
2435                         memset( &rwmap->rwm_oc, 0, sizeof( rwmap->rwm_oc ) );
2436                         memset( &rwmap->rwm_at, 0, sizeof( rwmap->rwm_at ) );
2437
2438                         /* re-parse all mappings, including the one
2439                          * that needs to be added */
2440                         argv[0] = "map";
2441                         for ( cnt = 0; cnt < c->valx; cnt++ ) {
2442                                 ConfigArgs ca = { 0 };
2443
2444                                 ca.line = rwmap->rwm_bva_map[ cnt ].bv_val;
2445                                 ca.argc = 0;
2446                                 config_fp_parse_line( &ca );
2447
2448                                 argv[1] = ca.argv[0];
2449                                 argv[2] = ca.argv[1];
2450                                 argv[3] = ca.argv[2];
2451                                 argv[4] = ca.argv[3];
2452
2453                                 rc = rwm_m_config( &db, c->fname, c->lineno, ca.argc + 1, argv );
2454
2455                                 ch_free( ca.tline );
2456                                 ch_free( ca.argv );
2457
2458                                 /* in case of failure, restore
2459                                  * the existing mapping */
2460                                 if ( rc ) {
2461                                         goto rwmmap_fail;
2462                                 }
2463                         }
2464
2465                         argv0 = c->argv[0];
2466                         c->argv[0] = "map";
2467                         rc = rwm_m_config( &db, c->fname, c->lineno, c->argc, c->argv );
2468                         c->argv[0] = argv0;
2469                         if ( rc ) {
2470                                 goto rwmmap_fail;
2471                         }
2472
2473                         if ( rwmap->rwm_bva_map ) {
2474                                 for ( ; !BER_BVISNULL( &rwmap->rwm_bva_map[ cnt ] ); cnt++ ) {
2475                                         ConfigArgs ca = { 0 };
2476
2477                                         ca.line = rwmap->rwm_bva_map[ cnt ].bv_val;
2478                                         ca.argc = 0;
2479                                         config_fp_parse_line( &ca );
2480
2481                                         argv[1] = ca.argv[0];
2482                                         argv[2] = ca.argv[1];
2483                                         argv[3] = ca.argv[2];
2484                                         argv[4] = ca.argv[3];
2485
2486                                         rc = rwm_m_config( &db, c->fname, c->lineno, ca.argc + 1, argv );
2487
2488                                         ch_free( ca.tline );
2489                                         ch_free( ca.argv );
2490
2491                                         /* in case of failure, restore
2492                                          * the existing mapping */
2493                                         if ( rc ) {
2494                                                 goto rwmmap_fail;
2495                                         }
2496                                 }
2497                         }
2498
2499                         /* in case of success, destroy the old mapping
2500                          * and add the new one */
2501                         if ( rc == 0 ) {
2502                                 BerVarray tmp;
2503                                 struct berval bv, *bvp = &bv;
2504
2505                                 if ( rwm_bva_add( &bvp, 0, &c->argv[ idx0 ] ) ) {
2506                                         rc = 1;
2507                                         goto rwmmap_fail;
2508                                 }
2509
2510                                 tmp = ber_memrealloc( rwmap->rwm_bva_map,
2511                                         sizeof( struct berval )*( cnt + 2 ) );
2512                                 if ( tmp == NULL ) {
2513                                         ber_memfree( bv.bv_val );
2514                                         rc = 1;
2515                                         goto rwmmap_fail;
2516                                 }
2517                                 rwmap->rwm_bva_map = tmp;
2518                                 BER_BVZERO( &rwmap->rwm_bva_map[ cnt + 1 ] );
2519
2520                                 avl_free( rwm_oc.remap, rwm_mapping_dst_free );
2521                                 avl_free( rwm_oc.map, rwm_mapping_free );
2522                                 avl_free( rwm_at.remap, rwm_mapping_dst_free );
2523                                 avl_free( rwm_at.map, rwm_mapping_free );
2524
2525                                 for ( ; cnt-- > c->valx; ) {
2526                                         rwmap->rwm_bva_map[ cnt + 1 ] = rwmap->rwm_bva_map[ cnt ];
2527                                 }
2528                                 rwmap->rwm_bva_map[ c->valx ] = bv;
2529
2530                         } else {
2531 rwmmap_fail:;
2532                                 avl_free( rwmap->rwm_oc.remap, rwm_mapping_dst_free );
2533                                 avl_free( rwmap->rwm_oc.map, rwm_mapping_free );
2534                                 avl_free( rwmap->rwm_at.remap, rwm_mapping_dst_free );
2535                                 avl_free( rwmap->rwm_at.map, rwm_mapping_free );
2536                                 rwmap->rwm_oc = rwm_oc;
2537                                 rwmap->rwm_at = rwm_at;
2538                         }
2539
2540                         break;
2541                 }
2542
2543                 argv0 = c->argv[ 0 ];
2544                 c->argv[ 0 ] += STRLENOF( "rwm-" );
2545                 rc = rwm_m_config( &db, c->fname, c->lineno, c->argc, c->argv );
2546                 c->argv[ 0 ] = argv0;
2547                 if ( rc ) {
2548                         return 1;
2549
2550                 } else {
2551                         char            *line;
2552                         struct berval   bv;
2553
2554                         line = ldap_charray2str( &c->argv[ 1 ], " " );
2555                         if ( line != NULL ) {
2556                                 ber_str2bv( line, 0, 0, &bv );
2557                                 ber_bvarray_add( &rwmap->rwm_bva_map, &bv );
2558                         }
2559                 }
2560                 break;
2561
2562         case RWM_CF_NORMALIZE_MAPPED:
2563                 if ( c->value_int ) {
2564                         rwmap->rwm_flags |= RWM_F_NORMALIZE_MAPPED_ATTRS;
2565                 } else {
2566                         rwmap->rwm_flags &= ~RWM_F_NORMALIZE_MAPPED_ATTRS;
2567                 }
2568                 break;
2569
2570         case RWM_CF_DROP_UNREQUESTED:
2571                 if ( c->value_int ) {
2572                         rwmap->rwm_flags |= RWM_F_DROP_UNREQUESTED_ATTRS;
2573                 } else {
2574                         rwmap->rwm_flags &= ~RWM_F_DROP_UNREQUESTED_ATTRS;
2575                 }
2576                 break;
2577
2578         default:
2579                 assert( 0 );
2580                 return 1;
2581         }
2582
2583         return rc;
2584 }
2585
2586 static int
2587 rwm_db_init(
2588         BackendDB       *be,
2589         ConfigReply     *cr )
2590 {
2591         slap_overinst           *on = (slap_overinst *) be->bd_info;
2592         struct ldaprwmap        *rwmap;
2593         int                     rc = 0;
2594
2595         rwmap = (struct ldaprwmap *)ch_calloc( 1, sizeof( struct ldaprwmap ) );
2596
2597         /* default */
2598         rwmap->rwm_flags = RWM_F_DROP_UNREQUESTED_ATTRS;
2599
2600         rc = rwm_info_init( &rwmap->rwm_rw );
2601
2602         on->on_bi.bi_private = (void *)rwmap;
2603
2604         if ( rc ) {
2605                 (void)rwm_db_destroy( be, NULL );
2606         }
2607
2608         return rc;
2609 }
2610
2611 static int
2612 rwm_db_destroy(
2613         BackendDB       *be,
2614         ConfigReply     *cr )
2615 {
2616         slap_overinst   *on = (slap_overinst *) be->bd_info;
2617         int             rc = 0;
2618
2619         if ( on->on_bi.bi_private ) {
2620                 struct ldaprwmap        *rwmap =
2621                         (struct ldaprwmap *)on->on_bi.bi_private;
2622
2623                 if ( rwmap->rwm_rw ) {
2624                         rewrite_info_delete( &rwmap->rwm_rw );
2625                         if ( rwmap->rwm_bva_rewrite )
2626                                 ber_bvarray_free( rwmap->rwm_bva_rewrite );
2627                 }
2628
2629                 avl_free( rwmap->rwm_oc.remap, rwm_mapping_dst_free );
2630                 avl_free( rwmap->rwm_oc.map, rwm_mapping_free );
2631                 avl_free( rwmap->rwm_at.remap, rwm_mapping_dst_free );
2632                 avl_free( rwmap->rwm_at.map, rwm_mapping_free );
2633                 ber_bvarray_free( rwmap->rwm_bva_map );
2634
2635                 ch_free( rwmap );
2636         }
2637
2638         return rc;
2639 }
2640
2641 static slap_overinst rwm = { { NULL } };
2642
2643 #if SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC
2644 static
2645 #endif /* SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC */
2646 int
2647 rwm_initialize( void )
2648 {
2649         int             rc;
2650
2651         /* Make sure we don't exceed the bits reserved for userland */
2652         config_check_userland( RWM_CF_LAST );
2653
2654         memset( &rwm, 0, sizeof( slap_overinst ) );
2655
2656         rwm.on_bi.bi_type = "rwm";
2657         rwm.on_bi.bi_flags =
2658                 SLAPO_BFLAG_SINGLE |
2659                 0;
2660
2661         rwm.on_bi.bi_db_init = rwm_db_init;
2662         rwm.on_bi.bi_db_config = rwm_db_config;
2663         rwm.on_bi.bi_db_destroy = rwm_db_destroy;
2664
2665         rwm.on_bi.bi_op_bind = rwm_op_bind;
2666         rwm.on_bi.bi_op_search = rwm_op_search;
2667         rwm.on_bi.bi_op_compare = rwm_op_compare;
2668         rwm.on_bi.bi_op_modify = rwm_op_modify;
2669         rwm.on_bi.bi_op_modrdn = rwm_op_modrdn;
2670         rwm.on_bi.bi_op_add = rwm_op_add;
2671         rwm.on_bi.bi_op_delete = rwm_op_delete;
2672         rwm.on_bi.bi_op_unbind = rwm_op_unbind;
2673         rwm.on_bi.bi_extended = rwm_extended;
2674 #if 1 /* TODO */
2675         rwm.on_bi.bi_entry_release_rw = rwm_entry_release_rw;
2676         rwm.on_bi.bi_entry_get_rw = rwm_entry_get_rw;
2677 #endif
2678
2679         rwm.on_bi.bi_operational = rwm_operational;
2680         rwm.on_bi.bi_chk_referrals = 0 /* rwm_chk_referrals */ ;
2681
2682         rwm.on_bi.bi_connection_init = rwm_conn_init;
2683         rwm.on_bi.bi_connection_destroy = rwm_conn_destroy;
2684
2685         rwm.on_response = rwm_response;
2686
2687         rwm.on_bi.bi_cf_ocs = rwmocs;
2688
2689         rc = config_register_schema( rwmcfg, rwmocs );
2690         if ( rc ) {
2691                 return rc;
2692         }
2693
2694         return overlay_register( &rwm );
2695 }
2696
2697 #if SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC
2698 int
2699 init_module( int argc, char *argv[] )
2700 {
2701         return rwm_initialize();
2702 }
2703 #endif /* SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC */
2704
2705 #endif /* SLAPD_OVER_RWM */