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 2003-2011 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         struct berval rx_dn;
  38         struct berval rx_ndn;
  39         AttributeName *mapped_attrs;
  40         OpRequest o_request;
  41 } rwm_op_state;
  42
  43 typedef struct rwm_op_cb {
  44         slap_callback cb;
  45         rwm_op_state ros;
  46 } rwm_op_cb;
  47
  48 static int
  49 rwm_db_destroy( BackendDB *be, ConfigReply *cr );
  50
  51 static int
  52 rwm_send_entry( Operation *op, SlapReply *rs );
  53
  54 static void
  55 rwm_op_rollback( Operation *op, SlapReply *rs, rwm_op_state *ros )
  56 {
  57         /* in case of successful extended operation cleanup
  58          * gets called *after* (ITS#6632); this hack counts
  59          * on others to cleanup our o_req_dn/o_req_ndn,
  60          * while we cleanup theirs. */
  61         if ( ros->r_tag == LDAP_REQ_EXTENDED && rs->sr_err == LDAP_SUCCESS ) {
  62                 if ( !BER_BVISNULL( &ros->rx_dn ) ) {
  63                         ch_free( ros->rx_dn.bv_val );
  64                 }
  65                 if ( !BER_BVISNULL( &ros->rx_ndn ) ) {
  66                         ch_free( ros->rx_ndn.bv_val );
  67                 }
  68
  69         } else {
  70                 if ( !BER_BVISNULL( &ros->ro_dn ) ) {
  71                         op->o_req_dn = ros->ro_dn;
  72                 }
  73                 if ( !BER_BVISNULL( &ros->ro_ndn ) ) {
  74                         op->o_req_ndn = ros->ro_ndn;
  75                 }
  76
  77                 if ( !BER_BVISNULL( &ros->r_dn )
  78                         && ros->r_dn.bv_val != ros->ro_dn.bv_val )
  79                 {
  80                         assert( ros->r_dn.bv_val != ros->r_ndn.bv_val );
  81                         ch_free( ros->r_dn.bv_val );
  82                 }
  83
  84                 if ( !BER_BVISNULL( &ros->r_ndn )
  85                         && ros->r_ndn.bv_val != ros->ro_ndn.bv_val )
  86                 {
  87                         ch_free( ros->r_ndn.bv_val );
  88                 }
  89         }
  90
  91         BER_BVZERO( &ros->r_dn );
  92         BER_BVZERO( &ros->r_ndn );
  93         BER_BVZERO( &ros->ro_dn );
  94         BER_BVZERO( &ros->ro_ndn );
  95         BER_BVZERO( &ros->rx_dn );
  96         BER_BVZERO( &ros->rx_ndn );
  97
  98         switch( ros->r_tag ) {
  99         case LDAP_REQ_COMPARE:
 100                 if ( op->orc_ava->aa_value.bv_val != ros->orc_ava->aa_value.bv_val )
 101                         op->o_tmpfree( op->orc_ava->aa_value.bv_val, op->o_tmpmemctx );
 102                 op->orc_ava = ros->orc_ava;
 103                 break;
 104         case LDAP_REQ_MODIFY:
 105                 slap_mods_free( op->orm_modlist, 1 );
 106                 op->orm_modlist = ros->orm_modlist;
 107                 break;
 108         case LDAP_REQ_MODRDN:
 109                 if ( op->orr_newSup != ros->orr_newSup ) {
 110                         ch_free( op->orr_newSup->bv_val );
 111                         ch_free( op->orr_nnewSup->bv_val );
 112                         op->o_tmpfree( op->orr_newSup, op->o_tmpmemctx );
 113                         op->o_tmpfree( op->orr_nnewSup, op->o_tmpmemctx );
 114                         op->orr_newSup = ros->orr_newSup;
 115                         op->orr_nnewSup = ros->orr_nnewSup;
 116                 }
 117                 if ( op->orr_newrdn.bv_val != ros->orr_newrdn.bv_val ) {
 118                         ch_free( op->orr_newrdn.bv_val );
 119                         ch_free( op->orr_nnewrdn.bv_val );
 120                         op->orr_newrdn = ros->orr_newrdn;
 121                         op->orr_nnewrdn = ros->orr_nnewrdn;
 122                 }
 123                 break;
 124         case LDAP_REQ_SEARCH:
 125                 op->o_tmpfree( ros->mapped_attrs, op->o_tmpmemctx );
 126                 filter_free_x( op, op->ors_filter, 1 );
 127                 op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
 128                 op->ors_attrs = ros->ors_attrs;
 129                 op->ors_filter = ros->ors_filter;
 130                 op->ors_filterstr = ros->ors_filterstr;
 131                 break;
 132         case LDAP_REQ_EXTENDED:
 133                 if ( op->ore_reqdata != ros->ore_reqdata ) {
 134                         ber_bvfree( op->ore_reqdata );
 135                         op->ore_reqdata = ros->ore_reqdata;
 136                 }
 137                 break;
 138         case LDAP_REQ_BIND:
 139                 if ( rs->sr_err == LDAP_SUCCESS ) {
 140 #if 0
 141                         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 142                         /* too late, c_mutex released */
 143                         Debug( LDAP_DEBUG_ANY, "*** DN: \"%s\" => \"%s\"\n",
 144                                 op->o_conn->c_ndn.bv_val,
 145                                 op->o_req_ndn.bv_val );
 146                         ber_bvreplace( &op->o_conn->c_ndn,
 147                                 &op->o_req_ndn );
 148                         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 149 #endif
 150                 }
 151                 break;
 152         default:        break;
 153         }
 154 }
 155
 156 static int
 157 rwm_op_cleanup( Operation *op, SlapReply *rs )
 158 {
 159         slap_callback   *cb = op->o_callback;
 160         rwm_op_state *ros = cb->sc_private;
 161
 162         if ( rs->sr_type == REP_RESULT || rs->sr_type == REP_EXTENDED ||
 163                 op->o_abandon || rs->sr_err == SLAPD_ABANDON )
 164         {
 165                 rwm_op_rollback( op, rs, ros );
 166
 167                 op->o_callback = op->o_callback->sc_next;
 168                 op->o_tmpfree( cb, op->o_tmpmemctx );
 169         }
 170
 171         return SLAP_CB_CONTINUE;
 172 }
 173
 174 static rwm_op_cb *
 175 rwm_callback_get( Operation *op )
 176 {
 177         rwm_op_cb       *roc;
 178
 179         roc = op->o_tmpalloc( sizeof( struct rwm_op_cb ), op->o_tmpmemctx );
 180         roc->cb.sc_cleanup = rwm_op_cleanup;
 181         roc->cb.sc_response = NULL;
 182         roc->cb.sc_next = op->o_callback;
 183         roc->cb.sc_private = &roc->ros;
 184         roc->ros.r_tag = op->o_tag;
 185         roc->ros.ro_dn = op->o_req_dn;
 186         roc->ros.ro_ndn = op->o_req_ndn;
 187         BER_BVZERO( &roc->ros.r_dn );
 188         BER_BVZERO( &roc->ros.r_ndn );
 189         BER_BVZERO( &roc->ros.rx_dn );
 190         BER_BVZERO( &roc->ros.rx_ndn );
 191         roc->ros.mapped_attrs = NULL;
 192         roc->ros.o_request = op->o_request;
 193
 194         return roc;
 195 }
 196
 197
 198 static int
 199 rwm_op_dn_massage( Operation *op, SlapReply *rs, void *cookie,
 200         rwm_op_state *ros )
 201 {
 202         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 203         struct ldaprwmap        *rwmap =
 204                         (struct ldaprwmap *)on->on_bi.bi_private;
 205
 206         struct berval           dn = BER_BVNULL,
 207                                 ndn = BER_BVNULL;
 208         int                     rc = 0;
 209         dncookie                dc;
 210
 211         /*
 212          * Rewrite the dn if needed
 213          */
 214         dc.rwmap = rwmap;
 215         dc.conn = op->o_conn;
 216         dc.rs = rs;
 217         dc.ctx = (char *)cookie;
 218
 219         /* NOTE: in those cases where only the ndn is available,
 220          * and the caller sets op->o_req_dn = op->o_req_ndn,
 221          * only rewrite the op->o_req_ndn and use it as
 222          * op->o_req_dn as well */
 223         ndn = op->o_req_ndn;
 224         if ( op->o_req_dn.bv_val != op->o_req_ndn.bv_val ) {
 225                 dn = op->o_req_dn;
 226                 rc = rwm_dn_massage_pretty_normalize( &dc, &op->o_req_dn, &dn, &ndn );
 227         } else {
 228                 rc = rwm_dn_massage_normalize( &dc, &op->o_req_ndn, &ndn );
 229         }
 230
 231         if ( rc != LDAP_SUCCESS ) {
 232                 return rc;
 233         }
 234
 235         if ( ( op->o_req_dn.bv_val != op->o_req_ndn.bv_val && dn.bv_val == op->o_req_dn.bv_val )
 236                         || ndn.bv_val == op->o_req_ndn.bv_val )
 237         {
 238                 return LDAP_SUCCESS;
 239         }
 240
 241         if ( op->o_req_dn.bv_val != op->o_req_ndn.bv_val ) {
 242                 op->o_req_dn = dn;
 243                 assert( BER_BVISNULL( &ros->r_dn ) );
 244                 ros->r_dn = dn;
 245         } else {
 246                 op->o_req_dn = ndn;
 247         }
 248         op->o_req_ndn = ndn;
 249         assert( BER_BVISNULL( &ros->r_ndn ) );
 250         ros->r_ndn = ndn;
 251
 252         if ( ros->r_tag == LDAP_REQ_EXTENDED ) {
 253                 ros->rx_dn = ros->r_dn;
 254                 ros->rx_ndn = ros->r_ndn;
 255         }
 256
 257         return LDAP_SUCCESS;
 258 }
 259
 260 static int
 261 rwm_op_add( Operation *op, SlapReply *rs )
 262 {
 263         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 264         struct ldaprwmap        *rwmap =
 265                         (struct ldaprwmap *)on->on_bi.bi_private;
 266
 267         int                     rc,
 268                                 i;
 269         Attribute               **ap = NULL;
 270         char                    *olddn = op->o_req_dn.bv_val;
 271         int                     isupdate;
 272
 273         rwm_op_cb               *roc = rwm_callback_get( op );
 274
 275         rc = rwm_op_dn_massage( op, rs, "addDN", &roc->ros );
 276         if ( rc != LDAP_SUCCESS ) {
 277                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 278                 send_ldap_error( op, rs, rc, "addDN massage error" );
 279                 return -1;
 280         }
 281
 282         if ( olddn != op->o_req_dn.bv_val ) {
 283                 ber_bvreplace( &op->ora_e->e_name, &op->o_req_dn );
 284                 ber_bvreplace( &op->ora_e->e_nname, &op->o_req_ndn );
 285         }
 286
 287         /* Count number of attributes in entry */
 288         isupdate = be_shadow_update( op );
 289         for ( i = 0, ap = &op->oq_add.rs_e->e_attrs; *ap; ) {
 290                 Attribute       *a;
 291
 292                 if ( (*ap)->a_desc == slap_schema.si_ad_objectClass ||
 293                                 (*ap)->a_desc == slap_schema.si_ad_structuralObjectClass )
 294                 {
 295                         int             j, last;
 296
 297                         last = (*ap)->a_numvals - 1;
 298                         for ( j = 0; !BER_BVISNULL( &(*ap)->a_vals[ j ] ); j++ ) {
 299                                 struct ldapmapping      *mapping = NULL;
 300
 301                                 ( void )rwm_mapping( &rwmap->rwm_oc, &(*ap)->a_vals[ j ],
 302                                                 &mapping, RWM_MAP );
 303                                 if ( mapping == NULL ) {
 304                                         if ( rwmap->rwm_at.drop_missing ) {
 305                                                 /* FIXME: we allow to remove objectClasses as well;
 306                                                  * if the resulting entry is inconsistent, that's
 307                                                  * the relayed database's business...
 308                                                  */
 309                                                 ch_free( (*ap)->a_vals[ j ].bv_val );
 310                                                 if ( last > j ) {
 311                                                         (*ap)->a_vals[ j ] = (*ap)->a_vals[ last ];
 312                                                 }
 313                                                 BER_BVZERO( &(*ap)->a_vals[ last ] );
 314                                                 (*ap)->a_numvals--;
 315                                                 last--;
 316                                                 j--;
 317                                         }
 318
 319                                 } else {
 320                                         ch_free( (*ap)->a_vals[ j ].bv_val );
 321                                         ber_dupbv( &(*ap)->a_vals[ j ], &mapping->m_dst );
 322                                 }
 323                         }
 324
 325                 } else if ( !isupdate && !get_relax( op ) && (*ap)->a_desc->ad_type->sat_no_user_mod )
 326                 {
 327                         goto next_attr;
 328
 329                 } else {
 330                         struct ldapmapping      *mapping = NULL;
 331
 332                         ( void )rwm_mapping( &rwmap->rwm_at, &(*ap)->a_desc->ad_cname,
 333                                         &mapping, RWM_MAP );
 334                         if ( mapping == NULL ) {
 335                                 if ( rwmap->rwm_at.drop_missing ) {
 336                                         goto cleanup_attr;
 337                                 }
 338                         }
 339
 340                         if ( (*ap)->a_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 341                                         || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 342                         {
 343                                 /*
 344                                  * FIXME: rewrite could fail; in this case
 345                                  * the operation should give up, right?
 346                                  */
 347                                 rc = rwm_dnattr_rewrite( op, rs, "addAttrDN",
 348                                                 (*ap)->a_vals,
 349                                                 (*ap)->a_nvals ? &(*ap)->a_nvals : NULL );
 350                                 if ( rc ) {
 351                                         goto cleanup_attr;
 352                                 }
 353
 354                         } else if ( (*ap)->a_desc == slap_schema.si_ad_ref ) {
 355                                 rc = rwm_referral_rewrite( op, rs, "referralAttrDN",
 356                                                 (*ap)->a_vals,
 357                                                 (*ap)->a_nvals ? &(*ap)->a_nvals : NULL );
 358                                 if ( rc != LDAP_SUCCESS ) {
 359                                         goto cleanup_attr;
 360                                 }
 361                         }
 362
 363                         if ( mapping != NULL ) {
 364                                 assert( mapping->m_dst_ad != NULL );
 365                                 (*ap)->a_desc = mapping->m_dst_ad;
 366                         }
 367                 }
 368
 369 next_attr:;
 370                 ap = &(*ap)->a_next;
 371                 continue;
 372
 373 cleanup_attr:;
 374                 /* FIXME: leaking attribute/values? */
 375                 a = *ap;
 376
 377                 *ap = (*ap)->a_next;
 378                 attr_free( a );
 379         }
 380
 381         op->o_callback = &roc->cb;
 382
 383         return SLAP_CB_CONTINUE;
 384 }
 385
 386 static int
 387 rwm_conn_init( BackendDB *be, Connection *conn )
 388 {
 389         slap_overinst           *on = (slap_overinst *) be->bd_info;
 390         struct ldaprwmap        *rwmap =
 391                         (struct ldaprwmap *)on->on_bi.bi_private;
 392
 393         ( void )rewrite_session_init( rwmap->rwm_rw, conn );
 394
 395         return SLAP_CB_CONTINUE;
 396 }
 397
 398 static int
 399 rwm_conn_destroy( BackendDB *be, Connection *conn )
 400 {
 401         slap_overinst           *on = (slap_overinst *) be->bd_info;
 402         struct ldaprwmap        *rwmap =
 403                         (struct ldaprwmap *)on->on_bi.bi_private;
 404
 405         ( void )rewrite_session_delete( rwmap->rwm_rw, conn );
 406
 407         return SLAP_CB_CONTINUE;
 408 }
 409
 410 static int
 411 rwm_op_bind( Operation *op, SlapReply *rs )
 412 {
 413         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 414         int                     rc;
 415
 416         rwm_op_cb               *roc = rwm_callback_get( op );
 417
 418         rc = rwm_op_dn_massage( op, rs, "bindDN", &roc->ros );
 419         if ( rc != LDAP_SUCCESS ) {
 420                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 421                 send_ldap_error( op, rs, rc, "bindDN massage error" );
 422                 return -1;
 423         }
 424
 425         overlay_callback_after_backover( op, &roc->cb, 1 );
 426
 427         return SLAP_CB_CONTINUE;
 428 }
 429
 430 static int
 431 rwm_op_unbind( Operation *op, SlapReply *rs )
 432 {
 433         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 434         struct ldaprwmap        *rwmap =
 435                         (struct ldaprwmap *)on->on_bi.bi_private;
 436
 437         rewrite_session_delete( rwmap->rwm_rw, op->o_conn );
 438
 439         return SLAP_CB_CONTINUE;
 440 }
 441
 442 static int
 443 rwm_op_compare( Operation *op, SlapReply *rs )
 444 {
 445         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 446         struct ldaprwmap        *rwmap =
 447                         (struct ldaprwmap *)on->on_bi.bi_private;
 448
 449         int                     rc;
 450         struct berval           mapped_vals[2] = { BER_BVNULL, BER_BVNULL };
 451
 452         rwm_op_cb               *roc = rwm_callback_get( op );
 453
 454         rc = rwm_op_dn_massage( op, rs, "compareDN", &roc->ros );
 455         if ( rc != LDAP_SUCCESS ) {
 456                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 457                 send_ldap_error( op, rs, rc, "compareDN massage error" );
 458                 return -1;
 459         }
 460
 461         /* if the attribute is an objectClass, try to remap its value */
 462         if ( op->orc_ava->aa_desc == slap_schema.si_ad_objectClass
 463                         || op->orc_ava->aa_desc == slap_schema.si_ad_structuralObjectClass )
 464         {
 465                 rwm_map( &rwmap->rwm_oc, &op->orc_ava->aa_value,
 466                                 &mapped_vals[0], RWM_MAP );
 467                 if ( BER_BVISNULL( &mapped_vals[0] ) || BER_BVISEMPTY( &mapped_vals[0] ) )
 468                 {
 469                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 470                         send_ldap_error( op, rs, LDAP_OTHER, "compare objectClass map error" );
 471                         return -1;
 472
 473                 } else if ( mapped_vals[0].bv_val != op->orc_ava->aa_value.bv_val ) {
 474                         ber_dupbv_x( &op->orc_ava->aa_value, &mapped_vals[0],
 475                                 op->o_tmpmemctx );
 476                 }
 477
 478         } else {
 479                 struct ldapmapping      *mapping = NULL;
 480                 AttributeDescription    *ad = op->orc_ava->aa_desc;
 481
 482                 ( void )rwm_mapping( &rwmap->rwm_at, &op->orc_ava->aa_desc->ad_cname,
 483                                 &mapping, RWM_MAP );
 484                 if ( mapping == NULL ) {
 485                         if ( rwmap->rwm_at.drop_missing ) {
 486                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 487                                 send_ldap_error( op, rs, LDAP_OTHER, "compare attributeType map error" );
 488                                 return -1;
 489                         }
 490
 491                 } else {
 492                         assert( mapping->m_dst_ad != NULL );
 493                         ad = mapping->m_dst_ad;
 494                 }
 495
 496                 if ( op->orc_ava->aa_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 497                                 || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 498                 {
 499                         struct berval   *mapped_valsp[2];
 500
 501                         mapped_valsp[0] = &mapped_vals[0];
 502                         mapped_valsp[1] = &mapped_vals[1];
 503
 504                         mapped_vals[0] = op->orc_ava->aa_value;
 505
 506                         rc = rwm_dnattr_rewrite( op, rs, "compareAttrDN", NULL, mapped_valsp );
 507
 508                         if ( rc != LDAP_SUCCESS ) {
 509                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 510                                 send_ldap_error( op, rs, rc, "compareAttrDN massage error" );
 511                                 return -1;
 512                         }
 513
 514                         if ( mapped_vals[ 0 ].bv_val != op->orc_ava->aa_value.bv_val ) {
 515                                 /* NOTE: if we get here, rwm_dnattr_rewrite()
 516                                  * already freed the old value, so now
 517                                  * it's invalid */
 518                                 ber_dupbv_x( &op->orc_ava->aa_value, &mapped_vals[0],
 519                                         op->o_tmpmemctx );
 520                                 ber_memfree_x( mapped_vals[ 0 ].bv_val, NULL );
 521                         }
 522                 }
 523                 op->orc_ava->aa_desc = ad;
 524         }
 525
 526         op->o_callback = &roc->cb;
 527
 528         return SLAP_CB_CONTINUE;
 529 }
 530
 531 static int
 532 rwm_op_delete( Operation *op, SlapReply *rs )
 533 {
 534         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 535         int                     rc;
 536
 537         rwm_op_cb               *roc = rwm_callback_get( op );
 538
 539         rc = rwm_op_dn_massage( op, rs, "deleteDN", &roc->ros );
 540         if ( rc != LDAP_SUCCESS ) {
 541                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 542                 send_ldap_error( op, rs, rc, "deleteDN massage error" );
 543                 return -1;
 544         }
 545
 546         op->o_callback = &roc->cb;
 547
 548         return SLAP_CB_CONTINUE;
 549 }
 550
 551 static int
 552 rwm_op_modify( Operation *op, SlapReply *rs )
 553 {
 554         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 555         struct ldaprwmap        *rwmap =
 556                         (struct ldaprwmap *)on->on_bi.bi_private;
 557
 558         int                     isupdate;
 559         Modifications           **mlp;
 560         int                     rc;
 561
 562         rwm_op_cb               *roc = rwm_callback_get( op );
 563
 564         rc = rwm_op_dn_massage( op, rs, "modifyDN", &roc->ros );
 565         if ( rc != LDAP_SUCCESS ) {
 566                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 567                 send_ldap_error( op, rs, rc, "modifyDN massage error" );
 568                 return -1;
 569         }
 570
 571         isupdate = be_shadow_update( op );
 572         for ( mlp = &op->orm_modlist; *mlp; ) {
 573                 int                     is_oc = 0;
 574                 Modifications           *ml = *mlp;
 575                 struct ldapmapping      *mapping = NULL;
 576
 577                 /* ml points to a temporary mod until needs duplication */
 578                 if ( ml->sml_desc == slap_schema.si_ad_objectClass
 579                                 || ml->sml_desc == slap_schema.si_ad_structuralObjectClass )
 580                 {
 581                         is_oc = 1;
 582
 583                 } else if ( !isupdate && !get_relax( op ) && ml->sml_desc->ad_type->sat_no_user_mod  )
 584                 {
 585                         ml = ch_malloc( sizeof( Modifications ) );
 586                         *ml = **mlp;
 587                         if ( (*mlp)->sml_values ) {
 588                                 ber_bvarray_dup_x( &ml->sml_values, (*mlp)->sml_values, NULL );
 589                                 if ( (*mlp)->sml_nvalues ) {
 590                                         ber_bvarray_dup_x( &ml->sml_nvalues, (*mlp)->sml_nvalues, NULL );
 591                                 }
 592                         }
 593                         *mlp = ml;
 594                         goto next_mod;
 595
 596                 } else {
 597                         int                     drop_missing;
 598
 599                         drop_missing = rwm_mapping( &rwmap->rwm_at,
 600                                         &ml->sml_desc->ad_cname,
 601                                         &mapping, RWM_MAP );
 602                         if ( drop_missing || ( mapping != NULL && BER_BVISNULL( &mapping->m_dst ) ) )
 603                         {
 604                                 goto skip_mod;
 605                         }
 606                 }
 607
 608                 /* duplicate the modlist */
 609                 ml = ch_malloc( sizeof( Modifications ));
 610                 *ml = **mlp;
 611                 *mlp = ml;
 612
 613                 if ( ml->sml_values != NULL ) {
 614                         int i, num;
 615                         struct berval *bva;
 616
 617                         for ( num = 0; !BER_BVISNULL( &ml->sml_values[ num ] ); num++ )
 618                                 /* count values */ ;
 619
 620                         bva = ch_malloc( (num+1) * sizeof( struct berval ));
 621                         for (i=0; i<num; i++)
 622                                 ber_dupbv( &bva[i], &ml->sml_values[i] );
 623                         BER_BVZERO( &bva[i] );
 624                         ml->sml_values = bva;
 625
 626                         if ( ml->sml_nvalues ) {
 627                                 bva = ch_malloc( (num+1) * sizeof( struct berval ));
 628                                 for (i=0; i<num; i++)
 629                                         ber_dupbv( &bva[i], &ml->sml_nvalues[i] );
 630                                 BER_BVZERO( &bva[i] );
 631                                 ml->sml_nvalues = bva;
 632                         }
 633
 634                         if ( is_oc ) {
 635                                 int     last, j;
 636
 637                                 last = num-1;
 638
 639                                 for ( j = 0; !BER_BVISNULL( &ml->sml_values[ j ] ); j++ ) {
 640                                         struct ldapmapping      *oc_mapping = NULL;
 641
 642                                         ( void )rwm_mapping( &rwmap->rwm_oc, &ml->sml_values[ j ],
 643                                                         &oc_mapping, RWM_MAP );
 644                                         if ( oc_mapping == NULL ) {
 645                                                 if ( rwmap->rwm_at.drop_missing ) {
 646                                                         /* FIXME: we allow to remove objectClasses as well;
 647                                                          * if the resulting entry is inconsistent, that's
 648                                                          * the relayed database's business...
 649                                                          */
 650                                                         if ( last > j ) {
 651                                                                 ch_free( ml->sml_values[ j ].bv_val );
 652                                                                 ml->sml_values[ j ] = ml->sml_values[ last ];
 653                                                         }
 654                                                         BER_BVZERO( &ml->sml_values[ last ] );
 655                                                         last--;
 656                                                         j--;
 657                                                 }
 658
 659                                         } else {
 660                                                 ch_free( ml->sml_values[ j ].bv_val );
 661                                                 ber_dupbv( &ml->sml_values[ j ], &oc_mapping->m_dst );
 662                                         }
 663                                 }
 664
 665                         } else {
 666                                 if ( ml->sml_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 667                                                 || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 668                                 {
 669                                         rc = rwm_dnattr_rewrite( op, rs, "modifyAttrDN",
 670                                                         ml->sml_values,
 671                                                         ml->sml_nvalues ? &ml->sml_nvalues : NULL );
 672
 673                                 } else if ( ml->sml_desc == slap_schema.si_ad_ref ) {
 674                                         rc = rwm_referral_rewrite( op, rs,
 675                                                         "referralAttrDN",
 676                                                         ml->sml_values,
 677                                                         ml->sml_nvalues ? &ml->sml_nvalues : NULL );
 678                                         if ( rc != LDAP_SUCCESS ) {
 679                                                 goto cleanup_mod;
 680                                         }
 681                                 }
 682
 683                                 if ( rc != LDAP_SUCCESS ) {
 684                                         goto cleanup_mod;
 685                                 }
 686                         }
 687                 }
 688
 689 next_mod:;
 690                 if ( mapping != NULL ) {
 691                         /* use new attribute description */
 692                         assert( mapping->m_dst_ad != NULL );
 693                         ml->sml_desc = mapping->m_dst_ad;
 694                 }
 695
 696                 mlp = &ml->sml_next;
 697                 continue;
 698
 699 skip_mod:;
 700                 *mlp = (*mlp)->sml_next;
 701                 continue;
 702
 703 cleanup_mod:;
 704                 ml = *mlp;
 705                 *mlp = (*mlp)->sml_next;
 706                 slap_mod_free( &ml->sml_mod, 0 );
 707                 free( ml );
 708         }
 709
 710         op->o_callback = &roc->cb;
 711
 712         return SLAP_CB_CONTINUE;
 713 }
 714
 715 static int
 716 rwm_op_modrdn( Operation *op, SlapReply *rs )
 717 {
 718         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 719         struct ldaprwmap        *rwmap =
 720                         (struct ldaprwmap *)on->on_bi.bi_private;
 721
 722         int                     rc;
 723         dncookie                dc;
 724
 725         rwm_op_cb               *roc = rwm_callback_get( op );
 726
 727         if ( op->orr_newSup ) {
 728                 struct berval   nnewSup = BER_BVNULL;
 729                 struct berval   newSup = BER_BVNULL;
 730
 731                 /*
 732                  * Rewrite the new superior, if defined and required
 733                  */
 734                 dc.rwmap = rwmap;
 735                 dc.conn = op->o_conn;
 736                 dc.rs = rs;
 737                 dc.ctx = "newSuperiorDN";
 738                 newSup = *op->orr_newSup;
 739                 nnewSup = *op->orr_nnewSup;
 740                 rc = rwm_dn_massage_pretty_normalize( &dc, op->orr_newSup, &newSup, &nnewSup );
 741                 if ( rc != LDAP_SUCCESS ) {
 742                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 743                         send_ldap_error( op, rs, rc, "newSuperiorDN massage error" );
 744                         return -1;
 745                 }
 746
 747                 if ( op->orr_newSup->bv_val != newSup.bv_val ) {
 748                         op->orr_newSup = op->o_tmpalloc( sizeof( struct berval ),
 749                                 op->o_tmpmemctx );
 750                         op->orr_nnewSup = op->o_tmpalloc( sizeof( struct berval ),
 751                                 op->o_tmpmemctx );
 752                         *op->orr_newSup = newSup;
 753                         *op->orr_nnewSup = nnewSup;
 754                 }
 755         }
 756
 757         /*
 758          * Rewrite the newRDN, if needed
 759          */
 760         {
 761                 struct berval   newrdn = BER_BVNULL;
 762                 struct berval   nnewrdn = BER_BVNULL;
 763
 764                 dc.rwmap = rwmap;
 765                 dc.conn = op->o_conn;
 766                 dc.rs = rs;
 767                 dc.ctx = "newRDN";
 768                 newrdn = op->orr_newrdn;
 769                 nnewrdn = op->orr_nnewrdn;
 770                 rc = rwm_dn_massage_pretty_normalize( &dc, &op->orr_newrdn, &newrdn, &nnewrdn );
 771                 if ( rc != LDAP_SUCCESS ) {
 772                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 773                         send_ldap_error( op, rs, rc, "newRDN massage error" );
 774                         goto err;
 775                 }
 776
 777                 if ( op->orr_newrdn.bv_val != newrdn.bv_val ) {
 778                         op->orr_newrdn = newrdn;
 779                         op->orr_nnewrdn = nnewrdn;
 780                 }
 781         }
 782
 783         /*
 784          * Rewrite the dn, if needed
 785          */
 786         rc = rwm_op_dn_massage( op, rs, "renameDN", &roc->ros );
 787         if ( rc != LDAP_SUCCESS ) {
 788                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 789                 send_ldap_error( op, rs, rc, "renameDN massage error" );
 790                 goto err;
 791         }
 792
 793         op->o_callback = &roc->cb;
 794
 795         rc = SLAP_CB_CONTINUE;
 796
 797         if ( 0 ) {
 798 err:;
 799                 if ( op->orr_newSup != roc->ros.orr_newSup ) {
 800                         ch_free( op->orr_newSup->bv_val );
 801                         ch_free( op->orr_nnewSup->bv_val );
 802                         op->o_tmpfree( op->orr_newSup, op->o_tmpmemctx );
 803                         op->o_tmpfree( op->orr_nnewSup, op->o_tmpmemctx );
 804                         op->orr_newSup = roc->ros.orr_newSup;
 805                         op->orr_nnewSup = roc->ros.orr_nnewSup;
 806                 }
 807
 808                 if ( op->orr_newrdn.bv_val != roc->ros.orr_newrdn.bv_val ) {
 809                         ch_free( op->orr_newrdn.bv_val );
 810                         ch_free( op->orr_nnewrdn.bv_val );
 811                         op->orr_newrdn = roc->ros.orr_newrdn;
 812                         op->orr_nnewrdn = roc->ros.orr_nnewrdn;
 813                 }
 814         }
 815
 816         return rc;
 817 }
 818
 819
 820 static int
 821 rwm_swap_attrs( Operation *op, SlapReply *rs )
 822 {
 823         slap_callback   *cb = op->o_callback;
 824         rwm_op_state *ros = cb->sc_private;
 825
 826         rs->sr_attrs = ros->ors_attrs;
 827
 828         /* other overlays might have touched op->ors_attrs,
 829          * so we restore the original version here, otherwise
 830          * attribute-mapping might fail */
 831         op->ors_attrs = ros->mapped_attrs;
 832
 833         return SLAP_CB_CONTINUE;
 834 }
 835
 836 /*
 837  * NOTE: this implementation of get/release entry is probably far from
 838  * optimal.  The rationale consists in intercepting the request directed
 839  * to the underlying database, in order to rewrite/remap the request,
 840  * perform it using the modified data, duplicate the resulting entry
 841  * and finally free it when release is called.
 842  * This implies that subsequent overlays are not called, as the request
 843  * is directly shunted to the underlying database.
 844  */
 845 static int
 846 rwm_entry_release_rw( Operation *op, Entry *e, int rw )
 847 {
 848         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 849
 850         /* can't be ours */
 851         if ( ((BackendInfo *)on->on_info->oi_orig)->bi_entry_get_rw == NULL ) {
 852                 return SLAP_CB_CONTINUE;
 853         }
 854
 855         /* just free entry if (probably) ours */
 856         if ( e->e_private == NULL && BER_BVISNULL( &e->e_bv ) ) {
 857                 entry_free( e );
 858                 return LDAP_SUCCESS;
 859         }
 860
 861         return SLAP_CB_CONTINUE;
 862 }
 863
 864 static int
 865 rwm_entry_get_rw( Operation *op, struct berval *ndn,
 866         ObjectClass *oc, AttributeDescription *at, int rw, Entry **ep )
 867 {
 868         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 869         int                     rc;
 870         BackendDB               db;
 871         Operation               op2;
 872         SlapReply               rs = { REP_SEARCH };
 873
 874         rwm_op_state            ros = { 0 };
 875         struct berval           mndn = BER_BVNULL;
 876
 877         if ( ((BackendInfo *)on->on_info->oi_orig)->bi_entry_get_rw == NULL ) {
 878                 return SLAP_CB_CONTINUE;
 879         }
 880
 881         /* massage DN */
 882         op2.o_tag = LDAP_REQ_SEARCH;
 883         op2 = *op;
 884         op2.o_req_dn = *ndn;
 885         op2.o_req_ndn = *ndn;
 886         rc = rwm_op_dn_massage( &op2, &rs, "searchDN", &ros );
 887         if ( rc != LDAP_SUCCESS ) {
 888                 return LDAP_OTHER;
 889         }
 890
 891         mndn = BER_BVISNULL( &ros.r_ndn ) ? *ndn : ros.r_ndn;
 892
 893         /* map attribute & objectClass */
 894         if ( at != NULL ) {
 895         }
 896
 897         if ( oc != NULL ) {
 898         }
 899
 900         /* fetch entry */
 901         db = *op->o_bd;
 902         op2.o_bd = &db;
 903         op2.o_bd->bd_info = (BackendInfo *)on->on_info->oi_orig;
 904         op2.ors_attrs = slap_anlist_all_attributes;
 905         rc = op2.o_bd->bd_info->bi_entry_get_rw( &op2, &mndn, oc, at, rw, ep );
 906         if ( rc == LDAP_SUCCESS && *ep != NULL ) {
 907                 /* we assume be_entry_release() needs to be called */
 908                 rs.sr_flags = REP_ENTRY_MUSTRELEASE;
 909                 rs.sr_entry = *ep;
 910
 911                 /* duplicate & release */
 912                 op2.o_bd->bd_info = (BackendInfo *)on;
 913                 rc = rwm_send_entry( &op2, &rs );
 914                 RS_ASSERT( rs.sr_flags & REP_ENTRY_MUSTFLUSH );
 915                 if ( rc == SLAP_CB_CONTINUE ) {
 916                         *ep = rs.sr_entry;
 917                         rc = LDAP_SUCCESS;
 918                 } else {
 919                         assert( rc != LDAP_SUCCESS && rs.sr_entry == *ep );
 920                         *ep = NULL;
 921                         op2.o_bd->bd_info = (BackendInfo *)on->on_info;
 922                         be_entry_release_r( &op2, rs.sr_entry );
 923                         op2.o_bd->bd_info = (BackendInfo *)on;
 924                 }
 925         }
 926
 927         if ( !BER_BVISNULL( &ros.r_ndn) && ros.r_ndn.bv_val != ndn->bv_val ) {
 928                 op->o_tmpfree( ros.r_ndn.bv_val, op->o_tmpmemctx );
 929         }
 930
 931         return rc;
 932 }
 933
 934 static int
 935 rwm_op_search( Operation *op, SlapReply *rs )
 936 {
 937         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 938         struct ldaprwmap        *rwmap =
 939                         (struct ldaprwmap *)on->on_bi.bi_private;
 940
 941         int                     rc;
 942         dncookie                dc;
 943
 944         struct berval           fstr = BER_BVNULL;
 945         Filter                  *f = NULL;
 946
 947         AttributeName           *an = NULL;
 948
 949         char                    *text = NULL;
 950
 951         rwm_op_cb               *roc = rwm_callback_get( op );
 952
 953         rc = rewrite_session_var_set( rwmap->rwm_rw, op->o_conn,
 954                 "searchFilter", op->ors_filterstr.bv_val );
 955         if ( rc == LDAP_SUCCESS )
 956                 rc = rwm_op_dn_massage( op, rs, "searchDN", &roc->ros );
 957         if ( rc != LDAP_SUCCESS ) {
 958                 text = "searchDN massage error";
 959                 goto error_return;
 960         }
 961
 962         /*
 963          * Rewrite the dn if needed
 964          */
 965         dc.rwmap = rwmap;
 966         dc.conn = op->o_conn;
 967         dc.rs = rs;
 968         dc.ctx = "searchFilterAttrDN";
 969
 970         rc = rwm_filter_map_rewrite( op, &dc, op->ors_filter, &fstr );
 971         if ( rc != LDAP_SUCCESS ) {
 972                 text = "searchFilter/searchFilterAttrDN massage error";
 973                 goto error_return;
 974         }
 975
 976         f = str2filter_x( op, fstr.bv_val );
 977
 978         if ( f == NULL ) {
 979                 text = "massaged filter parse error";
 980                 goto error_return;
 981         }
 982
 983         op->ors_filter = f;
 984         op->ors_filterstr = fstr;
 985
 986         rc = rwm_map_attrnames( op, &rwmap->rwm_at, &rwmap->rwm_oc,
 987                         op->ors_attrs, &an, RWM_MAP );
 988         if ( rc != LDAP_SUCCESS ) {
 989                 text = "attribute list mapping error";
 990                 goto error_return;
 991         }
 992
 993         op->ors_attrs = an;
 994         /* store the mapped Attributes for later usage, in
 995          * the case that other overlays change op->ors_attrs */
 996         roc->ros.mapped_attrs = an;
 997         roc->cb.sc_response = rwm_swap_attrs;
 998
 999         op->o_callback = &roc->cb;
1000
1001         return SLAP_CB_CONTINUE;
1002
1003 error_return:;
1004         if ( an != NULL ) {
1005                 ch_free( an );
1006         }
1007
1008         if ( f != NULL ) {
1009                 filter_free_x( op, f, 1 );
1010         }
1011
1012         if ( !BER_BVISNULL( &fstr ) ) {
1013                 op->o_tmpfree( fstr.bv_val, op->o_tmpmemctx );
1014         }
1015
1016         rwm_op_rollback( op, rs, &roc->ros );
1017         op->oq_search = roc->ros.oq_search;
1018         op->o_tmpfree( roc, op->o_tmpmemctx );
1019
1020         op->o_bd->bd_info = (BackendInfo *)on->on_info;
1021         send_ldap_error( op, rs, rc, text );
1022
1023         return -1;
1024
1025 }
1026
1027 static int
1028 rwm_exop_passwd( Operation *op, SlapReply *rs )
1029 {
1030         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
1031         int                     rc;
1032         rwm_op_cb *roc;
1033
1034         struct berval   id = BER_BVNULL,
1035                         pwold = BER_BVNULL,
1036                         pwnew = BER_BVNULL;
1037         BerElement *ber = NULL;
1038
1039         if ( !BER_BVISNULL( &op->o_req_ndn ) ) {
1040                 return LDAP_SUCCESS;
1041         }
1042
1043         if ( !SLAP_ISGLOBALOVERLAY( op->o_bd ) ) {
1044                 rs->sr_err = LDAP_OTHER;
1045                 return rs->sr_err;
1046         }
1047
1048         rs->sr_err = slap_passwd_parse( op->ore_reqdata, &id,
1049                 &pwold, &pwnew, &rs->sr_text );
1050         if ( rs->sr_err != LDAP_SUCCESS ) {
1051                 return rs->sr_err;
1052         }
1053
1054         if ( !BER_BVISNULL( &id ) ) {
1055                 char idNul = id.bv_val[id.bv_len];
1056                 id.bv_val[id.bv_len] = '\0';
1057                 rs->sr_err = dnPrettyNormal( NULL, &id, &op->o_req_dn,
1058                                 &op->o_req_ndn, op->o_tmpmemctx );
1059                 id.bv_val[id.bv_len] = idNul;
1060                 if ( rs->sr_err != LDAP_SUCCESS ) {
1061                         rs->sr_text = "Invalid DN";
1062                         return rs->sr_err;
1063                 }
1064
1065         } else {
1066                 ber_dupbv_x( &op->o_req_dn, &op->o_dn, op->o_tmpmemctx );
1067                 ber_dupbv_x( &op->o_req_ndn, &op->o_ndn, op->o_tmpmemctx );
1068         }
1069
1070         roc = rwm_callback_get( op );
1071
1072         rc = rwm_op_dn_massage( op, rs, "extendedDN", &roc->ros );
1073         if ( rc != LDAP_SUCCESS ) {
1074                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1075                 send_ldap_error( op, rs, rc, "extendedDN massage error" );
1076                 return -1;
1077         }
1078
1079         ber = ber_alloc_t( LBER_USE_DER );
1080         if ( !ber ) {
1081                 rs->sr_err = LDAP_OTHER;
1082                 rs->sr_text = "No memory";
1083                 return rs->sr_err;
1084         }
1085         ber_printf( ber, "{" );
1086         if ( !BER_BVISNULL( &id )) {
1087                 ber_printf( ber, "tO", LDAP_TAG_EXOP_MODIFY_PASSWD_ID,
1088                         &op->o_req_dn );
1089         }
1090         if ( !BER_BVISNULL( &pwold )) {
1091                 ber_printf( ber, "tO", LDAP_TAG_EXOP_MODIFY_PASSWD_OLD, &pwold );
1092         }
1093         if ( !BER_BVISNULL( &pwnew )) {
1094                 ber_printf( ber, "tO", LDAP_TAG_EXOP_MODIFY_PASSWD_NEW, &pwnew );
1095         }
1096         ber_printf( ber, "N}" );
1097         ber_flatten( ber, &op->ore_reqdata );
1098         ber_free( ber, 1 );
1099
1100         op->o_callback = &roc->cb;
1101
1102         return SLAP_CB_CONTINUE;
1103 }
1104
1105 static struct exop {
1106         struct berval   oid;
1107         BI_op_extended  *extended;
1108 } exop_table[] = {
1109         { BER_BVC(LDAP_EXOP_MODIFY_PASSWD),     rwm_exop_passwd },
1110         { BER_BVNULL, NULL }
1111 };
1112
1113 static int
1114 rwm_extended( Operation *op, SlapReply *rs )
1115 {
1116         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
1117         int                     rc;
1118         rwm_op_cb *roc;
1119
1120         int     i;
1121
1122         for ( i = 0; exop_table[i].extended != NULL; i++ ) {
1123                 if ( bvmatch( &exop_table[i].oid, &op->oq_extended.rs_reqoid ) )
1124                 {
1125                         rc = exop_table[i].extended( op, rs );
1126                         switch ( rc ) {
1127                         case LDAP_SUCCESS:
1128                                 break;
1129
1130                         case SLAP_CB_CONTINUE:
1131                         case SLAPD_ABANDON:
1132                                 return rc;
1133
1134                         default:
1135                                 send_ldap_result( op, rs );
1136                                 return rc;
1137                         }
1138                         break;
1139                 }
1140         }
1141
1142         roc = rwm_callback_get( op );
1143
1144         rc = rwm_op_dn_massage( op, rs, "extendedDN", &roc->ros );
1145         if ( rc != LDAP_SUCCESS ) {
1146                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1147                 send_ldap_error( op, rs, rc, "extendedDN massage error" );
1148                 return -1;
1149         }
1150
1151         /* TODO: rewrite/map extended data ? ... */
1152         op->o_callback = &roc->cb;
1153
1154         return SLAP_CB_CONTINUE;
1155 }
1156
1157 static void
1158 rwm_matched( Operation *op, SlapReply *rs )
1159 {
1160         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
1161         struct ldaprwmap        *rwmap =
1162                         (struct ldaprwmap *)on->on_bi.bi_private;
1163
1164         struct berval           dn, mdn;
1165         dncookie                dc;
1166         int                     rc;
1167
1168         if ( rs->sr_matched == NULL ) {
1169                 return;
1170         }
1171
1172         dc.rwmap = rwmap;
1173         dc.conn = op->o_conn;
1174         dc.rs = rs;
1175         dc.ctx = "matchedDN";
1176         ber_str2bv( rs->sr_matched, 0, 0, &dn );
1177         mdn = dn;
1178         rc = rwm_dn_massage_pretty( &dc, &dn, &mdn );
1179         if ( rc != LDAP_SUCCESS ) {
1180                 rs->sr_err = rc;
1181                 rs->sr_text = "Rewrite error";
1182
1183         } else if ( mdn.bv_val != dn.bv_val ) {
1184                 if ( rs->sr_flags & REP_MATCHED_MUSTBEFREED ) {
1185                         ch_free( (void *)rs->sr_matched );
1186
1187                 } else {
1188                         rs->sr_flags |= REP_MATCHED_MUSTBEFREED;
1189                 }
1190                 rs->sr_matched = mdn.bv_val;
1191         }
1192 }
1193
1194 static int
1195 rwm_attrs( Operation *op, SlapReply *rs, Attribute** a_first, int stripEntryDN )
1196 {
1197         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
1198         struct ldaprwmap        *rwmap =
1199                         (struct ldaprwmap *)on->on_bi.bi_private;
1200
1201         dncookie                dc;
1202         int                     rc;
1203         Attribute               **ap;
1204         int                     isupdate;
1205         int                     check_duplicate_attrs = 0;
1206
1207         /*
1208          * Rewrite the dn attrs, if needed
1209          */
1210         dc.rwmap = rwmap;
1211         dc.conn = op->o_conn;
1212         dc.rs = NULL;
1213
1214         /* FIXME: the entries are in the remote mapping form;
1215          * so we need to select those attributes we are willing
1216          * to return, and remap them accordingly */
1217
1218         /* FIXME: in principle, one could map an attribute
1219          * on top of another, which already exists.
1220          * As such, in the end there might exist more than
1221          * one instance of an attribute.
1222          * We should at least check if this occurs, and issue
1223          * an error (because multiple instances of attrs in
1224          * response are not valid), or merge the values (what
1225          * about duplicate values?) */
1226         isupdate = be_shadow_update( op );
1227         for ( ap = a_first; *ap; ) {
1228                 struct ldapmapping      *mapping = NULL;
1229                 int                     drop_missing;
1230                 int                     last = -1;
1231                 Attribute               *a;
1232
1233                 if ( ( rwmap->rwm_flags & RWM_F_DROP_UNREQUESTED_ATTRS ) &&
1234                                 op->ors_attrs != NULL &&
1235                                 !SLAP_USERATTRS( rs->sr_attr_flags ) &&
1236                                 !ad_inlist( (*ap)->a_desc, op->ors_attrs ) )
1237                 {
1238                         goto cleanup_attr;
1239                 }
1240
1241                 drop_missing = rwm_mapping( &rwmap->rwm_at,
1242                                 &(*ap)->a_desc->ad_cname, &mapping, RWM_REMAP );
1243                 if ( drop_missing || ( mapping != NULL && BER_BVISEMPTY( &mapping->m_dst ) ) )
1244                 {
1245                         goto cleanup_attr;
1246                 }
1247                 if ( mapping != NULL ) {
1248                         assert( mapping->m_dst_ad != NULL );
1249
1250                         /* try to normalize mapped Attributes if the original
1251                          * AttributeType was not normalized */
1252                         if ( (!(*ap)->a_desc->ad_type->sat_equality ||
1253                                 !(*ap)->a_desc->ad_type->sat_equality->smr_normalize) &&
1254                                 mapping->m_dst_ad->ad_type->sat_equality &&
1255                                 mapping->m_dst_ad->ad_type->sat_equality->smr_normalize )
1256                         {
1257                                 if ((rwmap->rwm_flags & RWM_F_NORMALIZE_MAPPED_ATTRS))
1258                                 {
1259                                         int i = 0;
1260
1261                                         last = (*ap)->a_numvals;
1262                                         if ( last )
1263                                         {
1264                                                 (*ap)->a_nvals = ch_malloc( (last+1) * sizeof(struct berval) );
1265
1266                                                 for ( i = 0; !BER_BVISNULL( &(*ap)->a_vals[i]); i++ ) {
1267                                                         int             rc;
1268                                                         /*
1269                                                          * check that each value is valid per syntax
1270                                                          * and pretty if appropriate
1271                                                          */
1272                                                         rc = mapping->m_dst_ad->ad_type->sat_equality->smr_normalize(
1273                                                                 SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
1274                                                                 mapping->m_dst_ad->ad_type->sat_syntax,
1275                                                                 mapping->m_dst_ad->ad_type->sat_equality,
1276                                                                 &(*ap)->a_vals[i], &(*ap)->a_nvals[i],
1277                                                                 NULL );
1278
1279                                                         if ( rc != LDAP_SUCCESS ) {
1280                                                                 BER_BVZERO( &(*ap)->a_nvals[i] );
1281                                                         }
1282                                                 }
1283                                                 BER_BVZERO( &(*ap)->a_nvals[i] );
1284                                         }
1285
1286                                 } else {
1287                                         assert( (*ap)->a_nvals == (*ap)->a_vals );
1288                                         (*ap)->a_nvals = NULL;
1289                                         ber_bvarray_dup_x( &(*ap)->a_nvals, (*ap)->a_vals, NULL );
1290                                 }
1291                         }
1292
1293                         /* rewrite the attribute description */
1294                         (*ap)->a_desc = mapping->m_dst_ad;
1295
1296                         /* will need to check for duplicate attrs */
1297                         check_duplicate_attrs++;
1298                 }
1299
1300                 if ( (*ap)->a_desc == slap_schema.si_ad_entryDN ) {
1301                         if ( stripEntryDN ) {
1302                                 /* will be generated by frontend */
1303                                 goto cleanup_attr;
1304                         }
1305
1306                 } else if ( !isupdate
1307                         && !get_relax( op )
1308                         && (*ap)->a_desc->ad_type->sat_no_user_mod
1309                         && (*ap)->a_desc->ad_type != slap_schema.si_at_undefined )
1310                 {
1311                         goto next_attr;
1312                 }
1313
1314                 if ( last == -1 ) { /* not yet counted */
1315                         last = (*ap)->a_numvals;
1316                 }
1317
1318                 if ( last == 0 ) {
1319                         /* empty? leave it in place because of attrsonly and vlv */
1320                         goto next_attr;
1321                 }
1322                 last--;
1323
1324                 if ( (*ap)->a_desc == slap_schema.si_ad_objectClass
1325                                 || (*ap)->a_desc == slap_schema.si_ad_structuralObjectClass )
1326                 {
1327                         struct berval   *bv;
1328
1329                         for ( bv = (*ap)->a_vals; !BER_BVISNULL( bv ); bv++ ) {
1330                                 struct berval   mapped;
1331
1332                                 rwm_map( &rwmap->rwm_oc, &bv[0], &mapped, RWM_REMAP );
1333                                 if ( BER_BVISNULL( &mapped ) || BER_BVISEMPTY( &mapped ) ) {
1334 remove_oc:;
1335                                         ch_free( bv[0].bv_val );
1336                                         BER_BVZERO( &bv[0] );
1337                                         if ( &(*ap)->a_vals[last] > &bv[0] ) {
1338                                                 bv[0] = (*ap)->a_vals[last];
1339                                                 BER_BVZERO( &(*ap)->a_vals[last] );
1340                                         }
1341                                         last--;
1342                                         bv--;
1343
1344                                 } else if ( mapped.bv_val != bv[0].bv_val
1345                                         && ber_bvstrcasecmp( &mapped, &bv[0] ) != 0 )
1346                                 {
1347                                         int     i;
1348
1349                                         for ( i = 0; !BER_BVISNULL( &(*ap)->a_vals[ i ] ); i++ ) {
1350                                                 if ( &(*ap)->a_vals[ i ] == bv ) {
1351                                                         continue;
1352                                                 }
1353
1354                                                 if ( ber_bvstrcasecmp( &mapped, &(*ap)->a_vals[ i ] ) == 0 ) {
1355                                                         break;
1356                                                 }
1357                                         }
1358
1359                                         if ( !BER_BVISNULL( &(*ap)->a_vals[ i ] ) ) {
1360                                                 goto remove_oc;
1361                                         }
1362
1363                                         /*
1364                                          * FIXME: after LBER_FREEing
1365                                          * the value is replaced by
1366                                          * ch_alloc'ed memory
1367                                          */
1368                                         ber_bvreplace( &bv[0], &mapped );
1369
1370                                         /* FIXME: will need to check
1371                                          * if the structuralObjectClass
1372                                          * changed */
1373                                 }
1374                         }
1375
1376                 /*
1377                  * It is necessary to try to rewrite attributes with
1378                  * dn syntax because they might be used in ACLs as
1379                  * members of groups; since ACLs are applied to the
1380                  * rewritten stuff, no dn-based subject clause could
1381                  * be used at the ldap backend side (see
1382                  * http://www.OpenLDAP.org/faq/data/cache/452.html)
1383                  * The problem can be overcome by moving the dn-based
1384                  * ACLs to the target directory server, and letting
1385                  * everything pass thru the ldap backend. */
1386                 /* FIXME: handle distinguishedName-like syntaxes, like
1387                  * nameAndOptionalUID */
1388                 } else if ( (*ap)->a_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
1389                                 || ( mapping != NULL && mapping->m_src_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
1390                 {
1391                         dc.ctx = "searchAttrDN";
1392                         rc = rwm_dnattr_result_rewrite( &dc, (*ap)->a_vals, (*ap)->a_nvals );
1393                         if ( rc != LDAP_SUCCESS ) {
1394                                 goto cleanup_attr;
1395                         }
1396
1397                 } else if ( (*ap)->a_desc == slap_schema.si_ad_ref ) {
1398                         dc.ctx = "searchAttrDN";
1399                         rc = rwm_referral_result_rewrite( &dc, (*ap)->a_vals );
1400                         if ( rc != LDAP_SUCCESS ) {
1401                                 goto cleanup_attr;
1402                         }
1403                 }
1404
1405
1406 next_attr:;
1407                 ap = &(*ap)->a_next;
1408                 continue;
1409
1410 cleanup_attr:;
1411                 a = *ap;
1412                 *ap = (*ap)->a_next;
1413
1414                 attr_free( a );
1415         }
1416
1417         /* only check if some mapping occurred */
1418         if ( check_duplicate_attrs ) {
1419                 for ( ap = a_first; *ap != NULL; ap = &(*ap)->a_next ) {
1420                         Attribute       **tap;
1421
1422                         for ( tap = &(*ap)->a_next; *tap != NULL; ) {
1423                                 if ( (*tap)->a_desc == (*ap)->a_desc ) {
1424                                         Entry           e = { 0 };
1425                                         Modification    mod = { 0 };
1426                                         const char      *text = NULL;
1427                                         char            textbuf[ SLAP_TEXT_BUFLEN ];
1428                                         Attribute       *next = (*tap)->a_next;
1429
1430                                         BER_BVSTR( &e.e_name, "" );
1431                                         BER_BVSTR( &e.e_nname, "" );
1432                                         e.e_attrs = *ap;
1433                                         mod.sm_op = LDAP_MOD_ADD;
1434                                         mod.sm_desc = (*ap)->a_desc;
1435                                         mod.sm_type = mod.sm_desc->ad_cname;
1436                                         mod.sm_numvals = (*tap)->a_numvals;
1437                                         mod.sm_values = (*tap)->a_vals;
1438                                         if ( (*tap)->a_nvals != (*tap)->a_vals ) {
1439                                                 mod.sm_nvalues = (*tap)->a_nvals;
1440                                         }
1441
1442                                         (void)modify_add_values( &e, &mod,
1443                                                 /* permissive */ 1,
1444                                                 &text, textbuf, sizeof( textbuf ) );
1445
1446                                         /* should not insert new attrs! */
1447                                         assert( e.e_attrs == *ap );
1448
1449                                         attr_free( *tap );
1450                                         *tap = next;
1451
1452                                 } else {
1453                                         tap = &(*tap)->a_next;
1454                                 }
1455                         }
1456                 }
1457         }
1458
1459         return 0;
1460 }
1461
1462 /* Should return SLAP_CB_CONTINUE or failure, never LDAP_SUCCESS. */
1463 static int
1464 rwm_send_entry( Operation *op, SlapReply *rs )
1465 {
1466         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
1467         struct ldaprwmap        *rwmap =
1468                         (struct ldaprwmap *)on->on_bi.bi_private;
1469
1470         Entry                   *e = NULL;
1471         struct berval           dn = BER_BVNULL,
1472                                 ndn = BER_BVNULL;
1473         dncookie                dc;
1474         int                     rc;
1475
1476         assert( rs->sr_entry != NULL );
1477
1478         /*
1479          * Rewrite the dn of the result, if needed
1480          */
1481         dc.rwmap = rwmap;
1482         dc.conn = op->o_conn;
1483         dc.rs = NULL;
1484         dc.ctx = "searchEntryDN";
1485
1486         e = rs->sr_entry;
1487         if ( !( rs->sr_flags & REP_ENTRY_MODIFIABLE ) ) {
1488                 /* FIXME: all we need to duplicate are:
1489                  * - dn
1490                  * - ndn
1491                  * - attributes that are requested
1492                  * - no values if attrsonly is set
1493                  */
1494                 e = entry_dup( e );
1495                 if ( e == NULL ) {
1496                         rc = LDAP_NO_MEMORY;
1497                         goto fail;
1498                 }
1499         } else if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1500                 /* ITS#6423: REP_ENTRY_MUSTRELEASE incompatible
1501                  * with REP_ENTRY_MODIFIABLE */
1502                 RS_ASSERT( 0 );
1503                 rc = 1;
1504                 goto fail;
1505         }
1506
1507         /*
1508          * Note: this may fail if the target host(s) schema differs
1509          * from the one known to the meta, and a DN with unknown
1510          * attributes is returned.
1511          */
1512         dn = e->e_name;
1513         ndn = e->e_nname;
1514         rc = rwm_dn_massage_pretty_normalize( &dc, &e->e_name, &dn, &ndn );
1515         if ( rc != LDAP_SUCCESS ) {
1516                 rc = 1;
1517                 goto fail;
1518         }
1519
1520         if ( e->e_name.bv_val != dn.bv_val ) {
1521                 ch_free( e->e_name.bv_val );
1522                 ch_free( e->e_nname.bv_val );
1523
1524                 e->e_name = dn;
1525                 e->e_nname = ndn;
1526         }
1527
1528         /* TODO: map entry attribute types, objectclasses
1529          * and dn-valued attribute values */
1530
1531         /* FIXME: the entries are in the remote mapping form;
1532          * so we need to select those attributes we are willing
1533          * to return, and remap them accordingly */
1534         (void)rwm_attrs( op, rs, &e->e_attrs, 1 );
1535
1536         if ( e != rs->sr_entry ) {
1537                 /* Reimplementing rs_replace_entry(), I suppose to
1538                  * bypass our own dubious rwm_entry_release_rw() */
1539                 if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1540                         rs->sr_flags ^= REP_ENTRY_MUSTRELEASE;
1541                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
1542                         be_entry_release_r( op, rs->sr_entry );
1543                         op->o_bd->bd_info = (BackendInfo *)on;
1544                 } else if ( rs->sr_flags & REP_ENTRY_MUSTBEFREED ) {
1545                         entry_free( rs->sr_entry );
1546                 }
1547                 rs->sr_entry = e;
1548                 rs->sr_flags |= REP_ENTRY_MODIFIABLE | REP_ENTRY_MUSTBEFREED;
1549         }
1550
1551         return SLAP_CB_CONTINUE;
1552
1553 fail:;
1554         if ( e != NULL && e != rs->sr_entry ) {
1555                 if ( e->e_name.bv_val == dn.bv_val ) {
1556                         BER_BVZERO( &e->e_name );
1557                 }
1558
1559                 if ( e->e_nname.bv_val == ndn.bv_val ) {
1560                         BER_BVZERO( &e->e_nname );
1561                 }
1562
1563                 entry_free( e );
1564         }
1565
1566         if ( !BER_BVISNULL( &dn ) ) {
1567                 ch_free( dn.bv_val );
1568         }
1569
1570         if ( !BER_BVISNULL( &ndn ) ) {
1571                 ch_free( ndn.bv_val );
1572         }
1573
1574         return rc;
1575 }
1576
1577 static int
1578 rwm_operational( Operation *op, SlapReply *rs )
1579 {
1580         /* FIXME: the entries are in the remote mapping form;
1581          * so we need to select those attributes we are willing
1582          * to return, and remap them accordingly */
1583         if ( rs->sr_operational_attrs ) {
1584                 rwm_attrs( op, rs, &rs->sr_operational_attrs, 1 );
1585         }
1586
1587         return SLAP_CB_CONTINUE;
1588 }
1589
1590 #if 0
1591 /* don't use this; it cannot be reverted, and leaves op->o_req_dn
1592  * rewritten for subsequent operations; fine for plain suffixmassage,
1593  * but destroys everything else */
1594 static int
1595 rwm_chk_referrals( Operation *op, SlapReply *rs )
1596 {
1597         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
1598         int                     rc;
1599
1600         rc = rwm_op_dn_massage( op, rs, "referralCheckDN" );
1601         if ( rc != LDAP_SUCCESS ) {
1602                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1603                 send_ldap_error( op, rs, rc, "referralCheckDN massage error" );
1604                 return -1;
1605         }
1606
1607         return SLAP_CB_CONTINUE;
1608 }
1609 #endif
1610
1611 static int
1612 rwm_rw_config(
1613         BackendDB       *be,
1614         const char      *fname,
1615         int             lineno,
1616         int             argc,
1617         char            **argv )
1618 {
1619         slap_overinst           *on = (slap_overinst *) be->bd_info;
1620         struct ldaprwmap        *rwmap =
1621                         (struct ldaprwmap *)on->on_bi.bi_private;
1622
1623         return rewrite_parse( rwmap->rwm_rw,
1624                                 fname, lineno, argc, argv );
1625
1626         return 0;
1627 }
1628
1629 static int
1630 rwm_suffixmassage_config(
1631         BackendDB       *be,
1632         const char      *fname,
1633         int             lineno,
1634         int             argc,
1635         char            **argv )
1636 {
1637         slap_overinst           *on = (slap_overinst *) be->bd_info;
1638         struct ldaprwmap        *rwmap =
1639                         (struct ldaprwmap *)on->on_bi.bi_private;
1640
1641         struct berval           bvnc, nvnc, pvnc, brnc, nrnc, prnc;
1642         int                     massaged;
1643         int                     rc;
1644
1645         /*
1646          * syntax:
1647          *
1648          *      suffixmassage [<suffix>] <massaged suffix>
1649          *
1650          * the [<suffix>] field must be defined as a valid suffix
1651          * for the current database;
1652          * the <massaged suffix> shouldn't have already been
1653          * defined as a valid suffix for the current server
1654          */
1655         if ( argc == 2 ) {
1656                 if ( be->be_suffix == NULL ) {
1657                         Debug( LDAP_DEBUG_ANY, "%s: line %d: "
1658                                        " \"suffixMassage [<suffix>]"
1659                                        " <massaged suffix>\" without "
1660                                        "<suffix> part requires database "
1661                                        "suffix be defined first.\n",
1662                                 fname, lineno, 0 );
1663                         return 1;
1664                 }
1665                 bvnc = be->be_suffix[ 0 ];
1666                 massaged = 1;
1667
1668         } else if ( argc == 3 ) {
1669                 ber_str2bv( argv[ 1 ], 0, 0, &bvnc );
1670                 massaged = 2;
1671
1672         } else  {
1673                 Debug( LDAP_DEBUG_ANY, "%s: line %d: syntax is"
1674                                " \"suffixMassage [<suffix>]"
1675                                " <massaged suffix>\"\n",
1676                         fname, lineno, 0 );
1677                 return 1;
1678         }
1679
1680         if ( dnPrettyNormal( NULL, &bvnc, &pvnc, &nvnc, NULL ) != LDAP_SUCCESS ) {
1681                 Debug( LDAP_DEBUG_ANY, "%s: line %d: suffix DN %s is invalid\n",
1682                         fname, lineno, bvnc.bv_val );
1683                 return 1;
1684         }
1685
1686         ber_str2bv( argv[ massaged ], 0, 0, &brnc );
1687         if ( dnPrettyNormal( NULL, &brnc, &prnc, &nrnc, NULL ) != LDAP_SUCCESS ) {
1688                 Debug( LDAP_DEBUG_ANY, "%s: line %d: suffix DN %s is invalid\n",
1689                                 fname, lineno, brnc.bv_val );
1690                 free( nvnc.bv_val );
1691                 free( pvnc.bv_val );
1692                 return 1;
1693         }
1694
1695         /*
1696          * The suffix massaging is emulated
1697          * by means of the rewrite capabilities
1698          */
1699         rc = rwm_suffix_massage_config( rwmap->rwm_rw,
1700                         &pvnc, &nvnc, &prnc, &nrnc );
1701         free( nvnc.bv_val );
1702         free( pvnc.bv_val );
1703         free( nrnc.bv_val );
1704         free( prnc.bv_val );
1705
1706         return rc;
1707 }
1708
1709 static int
1710 rwm_m_config(
1711         BackendDB       *be,
1712         const char      *fname,
1713         int             lineno,
1714         int             argc,
1715         char            **argv )
1716 {
1717         slap_overinst           *on = (slap_overinst *) be->bd_info;
1718         struct ldaprwmap        *rwmap =
1719                         (struct ldaprwmap *)on->on_bi.bi_private;
1720
1721         /* objectclass/attribute mapping */
1722         return rwm_map_config( &rwmap->rwm_oc,
1723                         &rwmap->rwm_at,
1724                         fname, lineno, argc, argv );
1725 }
1726
1727 static int
1728 rwm_response( Operation *op, SlapReply *rs )
1729 {
1730         slap_overinst           *on = (slap_overinst *)op->o_bd->bd_info;
1731         struct ldaprwmap        *rwmap =
1732                         (struct ldaprwmap *)on->on_bi.bi_private;
1733
1734         int             rc;
1735
1736         if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH ) {
1737                 return rwm_send_entry( op, rs );
1738         }
1739
1740         switch( op->o_tag ) {
1741         case LDAP_REQ_SEARCH:
1742         case LDAP_REQ_BIND:
1743         case LDAP_REQ_ADD:
1744         case LDAP_REQ_DELETE:
1745         case LDAP_REQ_MODRDN:
1746         case LDAP_REQ_MODIFY:
1747         case LDAP_REQ_COMPARE:
1748         case LDAP_REQ_EXTENDED:
1749                 if ( rs->sr_ref ) {
1750                         dncookie                dc;
1751
1752                         /*
1753                          * Rewrite the dn of the referrals, if needed
1754                          */
1755                         dc.rwmap = rwmap;
1756                         dc.conn = op->o_conn;
1757                         dc.rs = NULL;
1758                         dc.ctx = "referralDN";
1759                         rc = rwm_referral_result_rewrite( &dc, rs->sr_ref );
1760                         /* FIXME: impossible, so far */
1761                         if ( rc != LDAP_SUCCESS ) {
1762                                 rs->sr_err = rc;
1763                                 break;
1764                         }
1765                 }
1766
1767                 rwm_matched( op, rs );
1768                 break;
1769         }
1770
1771         return SLAP_CB_CONTINUE;
1772 }
1773
1774 static int
1775 rwm_db_config(
1776         BackendDB       *be,
1777         const char      *fname,
1778         int             lineno,
1779         int             argc,
1780         char            **argv )
1781 {
1782         slap_overinst           *on = (slap_overinst *) be->bd_info;
1783         struct ldaprwmap        *rwmap =
1784                         (struct ldaprwmap *)on->on_bi.bi_private;
1785
1786         int             rc = 0;
1787         char            *argv0 = NULL;
1788
1789         if ( strncasecmp( argv[ 0 ], "rwm-", STRLENOF( "rwm-" ) ) == 0 ) {
1790                 argv0 = argv[ 0 ];
1791                 argv[ 0 ] = &argv0[ STRLENOF( "rwm-" ) ];
1792         }
1793
1794         if ( strncasecmp( argv[0], "rewrite", STRLENOF("rewrite") ) == 0 ) {
1795                 rc = rwm_rw_config( be, fname, lineno, argc, argv );
1796
1797         } else if ( strcasecmp( argv[0], "map" ) == 0 ) {
1798                 rc = rwm_m_config( be, fname, lineno, argc, argv );
1799
1800         } else if ( strcasecmp( argv[0], "suffixmassage" ) == 0 ) {
1801                 rc = rwm_suffixmassage_config( be, fname, lineno, argc, argv );
1802
1803         } else if ( strcasecmp( argv[0], "t-f-support" ) == 0 ) {
1804                 if ( argc != 2 ) {
1805                         Debug( LDAP_DEBUG_ANY,
1806                 "%s: line %d: \"t-f-support {no|yes|discover}\" needs 1 argument.\n",
1807                                         fname, lineno, 0 );
1808                         return( 1 );
1809                 }
1810
1811                 if ( strcasecmp( argv[ 1 ], "no" ) == 0 ) {
1812                         rwmap->rwm_flags &= ~(RWM_F_SUPPORT_T_F_MASK2);
1813
1814                 } else if ( strcasecmp( argv[ 1 ], "yes" ) == 0 ) {
1815                         rwmap->rwm_flags |= RWM_F_SUPPORT_T_F;
1816
1817                 /* TODO: not implemented yet */
1818                 } else if ( strcasecmp( argv[ 1 ], "discover" ) == 0 ) {
1819                         Debug( LDAP_DEBUG_ANY,
1820                 "%s: line %d: \"discover\" not supported yet "
1821                 "in \"t-f-support {no|yes|discover}\".\n",
1822                                         fname, lineno, 0 );
1823                         return( 1 );
1824 #if 0
1825                         rwmap->rwm_flags |= RWM_F_SUPPORT_T_F_DISCOVER;
1826 #endif
1827
1828                 } else {
1829                         Debug( LDAP_DEBUG_ANY,
1830         "%s: line %d: unknown value \"%s\" for \"t-f-support {no|yes|discover}\".\n",
1831                                 fname, lineno, argv[ 1 ] );
1832                         return 1;
1833                 }
1834
1835         } else if ( strcasecmp( argv[0], "normalize-mapped-attrs" ) ==  0 ) {
1836                 if ( argc !=2 ) {
1837                         Debug( LDAP_DEBUG_ANY,
1838                 "%s: line %d: \"normalize-mapped-attrs {no|yes}\" needs 1 argument.\n",
1839                                         fname, lineno, 0 );
1840                         return( 1 );
1841                 }
1842
1843                 if ( strcasecmp( argv[ 1 ], "no" ) == 0 ) {
1844                         rwmap->rwm_flags &= ~(RWM_F_NORMALIZE_MAPPED_ATTRS);
1845
1846                 } else if ( strcasecmp( argv[ 1 ], "yes" ) == 0 ) {
1847                         rwmap->rwm_flags |= RWM_F_NORMALIZE_MAPPED_ATTRS;
1848                 }
1849
1850         } else {
1851                 rc = SLAP_CONF_UNKNOWN;
1852         }
1853
1854         if ( argv0 ) {
1855                 argv[ 0 ] = argv0;
1856         }
1857
1858         return rc;
1859 }
1860
1861 /*
1862  * dynamic configuration...
1863  */
1864
1865 enum {
1866         /* rewrite */
1867         RWM_CF_REWRITE = 1,
1868
1869         /* map */
1870         RWM_CF_MAP,
1871         RWM_CF_T_F_SUPPORT,
1872         RWM_CF_NORMALIZE_MAPPED,
1873         RWM_CF_DROP_UNREQUESTED,
1874
1875         RWM_CF_LAST
1876 };
1877
1878 static slap_verbmasks t_f_mode[] = {
1879         { BER_BVC( "true" ),            RWM_F_SUPPORT_T_F },
1880         { BER_BVC( "yes" ),             RWM_F_SUPPORT_T_F },
1881         { BER_BVC( "discover" ),        RWM_F_SUPPORT_T_F_DISCOVER },
1882         { BER_BVC( "false" ),           RWM_F_NONE },
1883         { BER_BVC( "no" ),              RWM_F_NONE },
1884         { BER_BVNULL,                   0 }
1885 };
1886
1887 static ConfigDriver rwm_cf_gen;
1888
1889 static ConfigTable rwmcfg[] = {
1890         { "rwm-rewrite", "rewrite",
1891                 2, 0, STRLENOF("rwm-rewrite"),
1892                 ARG_MAGIC|RWM_CF_REWRITE, rwm_cf_gen,
1893                 "( OLcfgOvAt:16.1 NAME 'olcRwmRewrite' "
1894                         "DESC 'Rewrites strings' "
1895                         "EQUALITY caseIgnoreMatch "
1896                         "SYNTAX OMsDirectoryString "
1897                         "X-ORDERED 'VALUES' )",
1898                 NULL, NULL },
1899
1900         { "rwm-suffixmassage", "[virtual]> <real",
1901                 2, 3, 0, ARG_MAGIC|RWM_CF_REWRITE, rwm_cf_gen,
1902                 NULL, NULL, NULL },
1903
1904         { "rwm-t-f-support", "true|false|discover",
1905                 2, 2, 0, ARG_MAGIC|RWM_CF_T_F_SUPPORT, rwm_cf_gen,
1906                 "( OLcfgOvAt:16.2 NAME 'olcRwmTFSupport' "
1907                         "DESC 'Absolute filters support' "
1908                         "SYNTAX OMsDirectoryString "
1909                         "SINGLE-VALUE )",
1910                 NULL, NULL },
1911
1912         { "rwm-map", "{objectClass|attribute}",
1913                 2, 4, 0, ARG_MAGIC|RWM_CF_MAP, rwm_cf_gen,
1914                 "( OLcfgOvAt:16.3 NAME 'olcRwmMap' "
1915                         "DESC 'maps attributes/objectClasses' "
1916                         "EQUALITY caseIgnoreMatch "
1917                         "SYNTAX OMsDirectoryString "
1918                         "X-ORDERED 'VALUES' )",
1919                 NULL, NULL },
1920
1921         { "rwm-normalize-mapped-attrs", "true|false",
1922                 2, 2, 0, ARG_MAGIC|ARG_ON_OFF|RWM_CF_NORMALIZE_MAPPED, rwm_cf_gen,
1923                 "( OLcfgOvAt:16.4 NAME 'olcRwmNormalizeMapped' "
1924                         "DESC 'Normalize mapped attributes/objectClasses' "
1925                         "SYNTAX OMsBoolean "
1926                         "SINGLE-VALUE )",
1927                 NULL, NULL },
1928
1929         { "rwm-drop-unrequested-attrs", "true|false",
1930                 2, 2, 0, ARG_MAGIC|ARG_ON_OFF|RWM_CF_DROP_UNREQUESTED, rwm_cf_gen,
1931                 "( OLcfgOvAt:16.5 NAME 'olcRwmDropUnrequested' "
1932                         "DESC 'Drop unrequested attributes' "
1933                         "SYNTAX OMsBoolean "
1934                         "SINGLE-VALUE )",
1935                 NULL, NULL },
1936
1937         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
1938 };
1939
1940 static ConfigOCs rwmocs[] = {
1941         { "( OLcfgOvOc:16.1 "
1942                 "NAME 'olcRwmConfig' "
1943                 "DESC 'Rewrite/remap configuration' "
1944                 "SUP olcOverlayConfig "
1945                 "MAY ( "
1946                         "olcRwmRewrite $ "
1947                         "olcRwmTFSupport $ "
1948                         "olcRwmMap $ "
1949                         "olcRwmNormalizeMapped "
1950                         ") )",
1951                 Cft_Overlay, rwmcfg, NULL, NULL },
1952         { NULL, 0, NULL }
1953 };
1954
1955 static void
1956 slap_bv_x_ordered_unparse( BerVarray in, BerVarray *out )
1957 {
1958         int             i;
1959         BerVarray       bva = NULL;
1960         char            ibuf[32], *ptr;
1961         struct berval   idx;
1962
1963         assert( in != NULL );
1964
1965         for ( i = 0; !BER_BVISNULL( &in[i] ); i++ )
1966                 /* count'em */ ;
1967
1968         if ( i == 0 ) {
1969                 return;
1970         }
1971
1972         idx.bv_val = ibuf;
1973
1974         bva = ch_malloc( ( i + 1 ) * sizeof(struct berval) );
1975         BER_BVZERO( &bva[ 0 ] );
1976
1977         for ( i = 0; !BER_BVISNULL( &in[i] ); i++ ) {
1978                 idx.bv_len = snprintf( idx.bv_val, sizeof( ibuf ), "{%d}", i );
1979                 if ( idx.bv_len >= sizeof( ibuf ) ) {
1980                         ber_bvarray_free( bva );
1981                         return;
1982                 }
1983
1984                 bva[i].bv_len = idx.bv_len + in[i].bv_len;
1985                 bva[i].bv_val = ch_malloc( bva[i].bv_len + 1 );
1986                 ptr = lutil_strcopy( bva[i].bv_val, ibuf );
1987                 ptr = lutil_strcopy( ptr, in[i].bv_val );
1988                 *ptr = '\0';
1989                 BER_BVZERO( &bva[ i + 1 ] );
1990         }
1991
1992         *out = bva;
1993 }
1994
1995 static int
1996 rwm_bva_add(
1997         BerVarray               *bva,
1998         int                     idx,
1999         char                    **argv )
2000 {
2001         char            *line;
2002         struct berval   bv;
2003
2004         line = ldap_charray2str( argv, "\" \"" );
2005         if ( line != NULL ) {
2006                 int     len = strlen( argv[ 0 ] );
2007
2008                 ber_str2bv( line, 0, 0, &bv );
2009                 AC_MEMCPY( &bv.bv_val[ len ], &bv.bv_val[ len + 1 ],
2010                         bv.bv_len - ( len + 1 ) );
2011                 bv.bv_val[ bv.bv_len - 1 ] = '"';
2012
2013                 if ( idx == -1 ) {
2014                         ber_bvarray_add( bva, &bv );
2015
2016                 } else {
2017                         (*bva)[ idx ] = bv;
2018                 }
2019
2020                 return 0;
2021         }
2022
2023         return -1;
2024 }
2025
2026 static int
2027 rwm_bva_rewrite_add(
2028         struct ldaprwmap        *rwmap,
2029         int                     idx,
2030         char                    **argv )
2031 {
2032         return rwm_bva_add( &rwmap->rwm_bva_rewrite, idx, argv );
2033 }
2034
2035 #ifdef unused
2036 static int
2037 rwm_bva_map_add(
2038         struct ldaprwmap        *rwmap,
2039         int                     idx,
2040         char                    **argv )
2041 {
2042         return rwm_bva_add( &rwmap->rwm_bva_map, idx, argv );
2043 }
2044 #endif /* unused */
2045
2046 static int
2047 rwm_info_init( struct rewrite_info ** rwm_rw )
2048 {
2049         char                    *rargv[ 3 ];
2050
2051         *rwm_rw = rewrite_info_init( REWRITE_MODE_USE_DEFAULT );
2052         if ( *rwm_rw == NULL ) {
2053                 return -1;
2054         }
2055
2056         /* this rewriteContext by default must be null;
2057          * rules can be added if required */
2058         rargv[ 0 ] = "rewriteContext";
2059         rargv[ 1 ] = "searchFilter";
2060         rargv[ 2 ] = NULL;
2061         rewrite_parse( *rwm_rw, "<suffix massage>", 1, 2, rargv );
2062
2063         rargv[ 0 ] = "rewriteContext";
2064         rargv[ 1 ] = "default";
2065         rargv[ 2 ] = NULL;
2066         rewrite_parse( *rwm_rw, "<suffix massage>", 2, 2, rargv );
2067
2068         return 0;
2069 }
2070
2071 static int
2072 rwm_cf_gen( ConfigArgs *c )
2073 {
2074         slap_overinst           *on = (slap_overinst *)c->bi;
2075         struct ldaprwmap        *rwmap =
2076                         (struct ldaprwmap *)on->on_bi.bi_private;
2077
2078         BackendDB               db;
2079         char                    *argv0;
2080         int                     idx0 = 0;
2081         int                     rc = 0;
2082
2083         db = *c->be;
2084         db.bd_info = c->bi;
2085
2086         if ( c->op == SLAP_CONFIG_EMIT ) {
2087                 struct berval   bv = BER_BVNULL;
2088
2089                 switch ( c->type ) {
2090                 case RWM_CF_REWRITE:
2091                         if ( rwmap->rwm_bva_rewrite == NULL ) {
2092                                 rc = 1;
2093
2094                         } else {
2095                                 slap_bv_x_ordered_unparse( rwmap->rwm_bva_rewrite, &c->rvalue_vals );
2096                                 if ( !c->rvalue_vals ) {
2097                                         rc = 1;
2098                                 }
2099                         }
2100                         break;
2101
2102                 case RWM_CF_T_F_SUPPORT:
2103                         enum_to_verb( t_f_mode, (rwmap->rwm_flags & RWM_F_SUPPORT_T_F_MASK2), &bv );
2104                         if ( BER_BVISNULL( &bv ) ) {
2105                                 /* there's something wrong... */
2106                                 assert( 0 );
2107                                 rc = 1;
2108
2109                         } else {
2110                                 value_add_one( &c->rvalue_vals, &bv );
2111                         }
2112                         break;
2113
2114                 case RWM_CF_MAP:
2115                         if ( rwmap->rwm_bva_map == NULL ) {
2116                                 rc = 1;
2117
2118                         } else {
2119                                 slap_bv_x_ordered_unparse( rwmap->rwm_bva_map, &c->rvalue_vals );
2120                                 if ( !c->rvalue_vals ) {
2121                                         rc = 1;
2122                                 }
2123                         }
2124                         break;
2125
2126                 case RWM_CF_NORMALIZE_MAPPED:
2127                         c->value_int = ( rwmap->rwm_flags & RWM_F_NORMALIZE_MAPPED_ATTRS );
2128                         break;
2129
2130                 case RWM_CF_DROP_UNREQUESTED:
2131                         c->value_int = ( rwmap->rwm_flags & RWM_F_DROP_UNREQUESTED_ATTRS );
2132                         break;
2133
2134                 default:
2135                         assert( 0 );
2136                         rc = 1;
2137                 }
2138
2139                 return rc;
2140
2141         } else if ( c->op == LDAP_MOD_DELETE ) {
2142                 switch ( c->type ) {
2143                 case RWM_CF_REWRITE:
2144                         if ( c->valx >= 0 ) {
2145                                 int i;
2146
2147                                 for ( i = 0; !BER_BVISNULL( &rwmap->rwm_bva_rewrite[ i ] ); i++ )
2148                                         /* count'em */ ;
2149
2150                                 if ( c->valx >= i ) {
2151                                         rc = 1;
2152                                         break;
2153                                 }
2154
2155                                 ber_memfree( rwmap->rwm_bva_rewrite[ c->valx ].bv_val );
2156                                 for ( i = c->valx; !BER_BVISNULL( &rwmap->rwm_bva_rewrite[ i + 1 ] ); i++ )
2157                                 {
2158                                         rwmap->rwm_bva_rewrite[ i ] = rwmap->rwm_bva_rewrite[ i + 1 ];
2159                                 }
2160                                 BER_BVZERO( &rwmap->rwm_bva_rewrite[ i ] );
2161
2162                                 rewrite_info_delete( &rwmap->rwm_rw );
2163                                 assert( rwmap->rwm_rw == NULL );
2164
2165                                 rc = rwm_info_init( &rwmap->rwm_rw );
2166
2167                                 for ( i = 0; !BER_BVISNULL( &rwmap->rwm_bva_rewrite[ i ] ); i++ )
2168                                 {
2169                                         ConfigArgs ca = { 0 };
2170
2171                                         ca.line = rwmap->rwm_bva_rewrite[ i ].bv_val;
2172                                         ca.argc = 0;
2173                                         config_fp_parse_line( &ca );
2174
2175                                         if ( strcasecmp( ca.argv[ 0 ], "suffixmassage" ) == 0 ) {
2176                                                 rc = rwm_suffixmassage_config( &db, c->fname, c->lineno,
2177                                                         ca.argc, ca.argv );
2178
2179                                         } else {
2180                                                 rc = rwm_rw_config( &db, c->fname, c->lineno,
2181                                                         ca.argc, ca.argv );
2182                                         }
2183
2184                                         ch_free( ca.tline );
2185                                         ch_free( ca.argv );
2186
2187                                         assert( rc == 0 );
2188                                 }
2189
2190                         } else if ( rwmap->rwm_rw != NULL ) {
2191                                 rewrite_info_delete( &rwmap->rwm_rw );
2192                                 assert( rwmap->rwm_rw == NULL );
2193
2194                                 ber_bvarray_free( rwmap->rwm_bva_rewrite );
2195                                 rwmap->rwm_bva_rewrite = NULL;
2196
2197                                 rc = rwm_info_init( &rwmap->rwm_rw );
2198                         }
2199                         break;
2200
2201                 case RWM_CF_T_F_SUPPORT:
2202                         rwmap->rwm_flags &= ~RWM_F_SUPPORT_T_F_MASK2;
2203                         break;
2204
2205                 case RWM_CF_MAP:
2206                         if ( c->valx >= 0 ) {
2207                                 struct ldapmap rwm_oc = rwmap->rwm_oc;
2208                                 struct ldapmap rwm_at = rwmap->rwm_at;
2209                                 char *argv[5];
2210                                 int cnt = 0;
2211
2212                                 if ( rwmap->rwm_bva_map ) {
2213                                         for ( ; !BER_BVISNULL( &rwmap->rwm_bva_map[ cnt ] ); cnt++ )
2214                                                 /* count */ ;
2215                                 }
2216
2217                                 if ( c->valx >= cnt ) {
2218                                         rc = 1;
2219                                         break;
2220                                 }
2221
2222                                 memset( &rwmap->rwm_oc, 0, sizeof( rwmap->rwm_oc ) );
2223                                 memset( &rwmap->rwm_at, 0, sizeof( rwmap->rwm_at ) );
2224
2225                                 /* re-parse all mappings except the one
2226                                  * that needs to be eliminated */
2227                                 argv[0] = "map";
2228                                 for ( cnt = 0; !BER_BVISNULL( &rwmap->rwm_bva_map[ cnt ] ); cnt++ ) {
2229                                         ConfigArgs ca = { 0 };
2230
2231                                         if ( cnt == c->valx ) {
2232                                                 continue;
2233                                         }
2234
2235                                         ca.line = rwmap->rwm_bva_map[ cnt ].bv_val;
2236                                         ca.argc = 0;
2237                                         config_fp_parse_line( &ca );
2238
2239                                         argv[1] = ca.argv[0];
2240                                         argv[2] = ca.argv[1];
2241                                         argv[3] = ca.argv[2];
2242                                         argv[4] = ca.argv[3];
2243
2244                                         rc = rwm_m_config( &db, c->fname, c->lineno, ca.argc + 1, argv );
2245
2246                                         ch_free( ca.tline );
2247                                         ch_free( ca.argv );
2248
2249                                         /* in case of failure, restore
2250                                          * the existing mapping */
2251                                         if ( rc ) {
2252                                                 avl_free( rwmap->rwm_oc.remap, rwm_mapping_dst_free );
2253                                                 avl_free( rwmap->rwm_oc.map, rwm_mapping_free );
2254                                                 avl_free( rwmap->rwm_at.remap, rwm_mapping_dst_free );
2255                                                 avl_free( rwmap->rwm_at.map, rwm_mapping_free );
2256                                                 rwmap->rwm_oc = rwm_oc;
2257                                                 rwmap->rwm_at = rwm_at;
2258                                                 break;
2259                                         }
2260                                 }
2261
2262                                 /* in case of success, destroy the old mapping
2263                                  * and eliminate the deleted one */
2264                                 if ( rc == 0 ) {
2265                                         avl_free( rwm_oc.remap, rwm_mapping_dst_free );
2266                                         avl_free( rwm_oc.map, rwm_mapping_free );
2267                                         avl_free( rwm_at.remap, rwm_mapping_dst_free );
2268                                         avl_free( rwm_at.map, rwm_mapping_free );
2269
2270                                         ber_memfree( rwmap->rwm_bva_map[ c->valx ].bv_val );
2271                                         for ( cnt = c->valx; !BER_BVISNULL( &rwmap->rwm_bva_map[ cnt ] ); cnt++ ) {
2272                                                 rwmap->rwm_bva_map[ cnt ] = rwmap->rwm_bva_map[ cnt + 1 ];
2273                                         }
2274                                 }
2275
2276                         } else {
2277                                 avl_free( rwmap->rwm_oc.remap, rwm_mapping_dst_free );
2278                                 avl_free( rwmap->rwm_oc.map, rwm_mapping_free );
2279                                 avl_free( rwmap->rwm_at.remap, rwm_mapping_dst_free );
2280                                 avl_free( rwmap->rwm_at.map, rwm_mapping_free );
2281
2282                                 rwmap->rwm_oc.remap = NULL;
2283                                 rwmap->rwm_oc.map = NULL;
2284                                 rwmap->rwm_at.remap = NULL;
2285                                 rwmap->rwm_at.map = NULL;
2286
2287                                 ber_bvarray_free( rwmap->rwm_bva_map );
2288                                 rwmap->rwm_bva_map = NULL;
2289                         }
2290                         break;
2291
2292                 case RWM_CF_NORMALIZE_MAPPED:
2293                         rwmap->rwm_flags &= ~RWM_F_NORMALIZE_MAPPED_ATTRS;
2294                         break;
2295
2296                 case RWM_CF_DROP_UNREQUESTED:
2297                         rwmap->rwm_flags &= ~RWM_F_DROP_UNREQUESTED_ATTRS;
2298                         break;
2299
2300                 default:
2301                         return 1;
2302                 }
2303                 return rc;
2304         }
2305
2306         if ( strncasecmp( c->argv[ 0 ], "olcRwm", STRLENOF( "olcRwm" ) ) == 0 ) {
2307                 idx0 = 1;
2308         }
2309
2310         switch ( c->type ) {
2311         case RWM_CF_REWRITE:
2312                 if ( c->valx >= 0 ) {
2313                         struct rewrite_info *rwm_rw = rwmap->rwm_rw;
2314                         int i, last;
2315
2316                         for ( last = 0; rwmap->rwm_bva_rewrite && !BER_BVISNULL( &rwmap->rwm_bva_rewrite[ last ] ); last++ )
2317                                 /* count'em */ ;
2318
2319                         if ( c->valx > last ) {
2320                                 c->valx = last;
2321                         }
2322
2323                         rwmap->rwm_rw = NULL;
2324                         rc = rwm_info_init( &rwmap->rwm_rw );
2325
2326                         for ( i = 0; i < c->valx; i++ ) {
2327                                 ConfigArgs ca = { 0 };
2328
2329                                 ca.line = rwmap->rwm_bva_rewrite[ i ].bv_val;
2330                                 ca.argc = 0;
2331                                 config_fp_parse_line( &ca );
2332
2333                                 argv0 = ca.argv[ 0 ];
2334                                 ca.argv[ 0 ] += STRLENOF( "rwm-" );
2335
2336                                 if ( strcasecmp( ca.argv[ 0 ], "suffixmassage" ) == 0 ) {
2337                                         rc = rwm_suffixmassage_config( &db, c->fname, c->lineno,
2338                                                 ca.argc, ca.argv );
2339
2340                                 } else {
2341                                         rc = rwm_rw_config( &db, c->fname, c->lineno,
2342                                                 ca.argc, ca.argv );
2343                                 }
2344
2345                                 ca.argv[ 0 ] = argv0;
2346
2347                                 ch_free( ca.tline );
2348                                 ch_free( ca.argv );
2349
2350                                 assert( rc == 0 );
2351                         }
2352
2353                         argv0 = c->argv[ idx0 ];
2354                         if ( strncasecmp( argv0, "rwm-", STRLENOF( "rwm-" ) ) != 0 ) {
2355                                 return 1;
2356                         }
2357                         c->argv[ idx0 ] += STRLENOF( "rwm-" );
2358                         if ( strcasecmp( c->argv[ idx0 ], "suffixmassage" ) == 0 ) {
2359                                 rc = rwm_suffixmassage_config( &db, c->fname, c->lineno,
2360                                         c->argc - idx0, &c->argv[ idx0 ] );
2361
2362                         } else {
2363                                 rc = rwm_rw_config( &db, c->fname, c->lineno,
2364                                         c->argc - idx0, &c->argv[ idx0 ] );
2365                         }
2366                         c->argv[ idx0 ] = argv0;
2367                         if ( rc != 0 ) {
2368                                 rewrite_info_delete( &rwmap->rwm_rw );
2369                                 assert( rwmap->rwm_rw == NULL );
2370
2371                                 rwmap->rwm_rw = rwm_rw;
2372                                 return 1;
2373                         }
2374
2375                         for ( i = c->valx; rwmap->rwm_bva_rewrite && !BER_BVISNULL( &rwmap->rwm_bva_rewrite[ i ] ); i++ )
2376                         {
2377                                 ConfigArgs ca = { 0 };
2378
2379                                 ca.line = rwmap->rwm_bva_rewrite[ i ].bv_val;
2380                                 ca.argc = 0;
2381                                 config_fp_parse_line( &ca );
2382
2383                                 argv0 = ca.argv[ 0 ];
2384                                 ca.argv[ 0 ] += STRLENOF( "rwm-" );
2385
2386                                 if ( strcasecmp( ca.argv[ 0 ], "suffixmassage" ) == 0 ) {
2387                                         rc = rwm_suffixmassage_config( &db, c->fname, c->lineno,
2388                                                 ca.argc, ca.argv );
2389
2390                                 } else {
2391                                         rc = rwm_rw_config( &db, c->fname, c->lineno,
2392                                                 ca.argc, ca.argv );
2393                                 }
2394
2395                                 ca.argv[ 0 ] = argv0;
2396
2397                                 ch_free( ca.tline );
2398                                 ch_free( ca.argv );
2399
2400                                 assert( rc == 0 );
2401                         }
2402
2403                         rwmap->rwm_bva_rewrite = ch_realloc( rwmap->rwm_bva_rewrite,
2404                                 ( last + 2 )*sizeof( struct berval ) );
2405                         BER_BVZERO( &rwmap->rwm_bva_rewrite[last+1] );
2406
2407                         for ( i = last - 1; i >= c->valx; i-- )
2408                         {
2409                                 rwmap->rwm_bva_rewrite[ i + 1 ] = rwmap->rwm_bva_rewrite[ i ];
2410                         }
2411
2412                         rwm_bva_rewrite_add( rwmap, c->valx, &c->argv[ idx0 ] );
2413
2414                         rewrite_info_delete( &rwm_rw );
2415                         assert( rwm_rw == NULL );
2416
2417                         break;
2418                 }
2419
2420                 argv0 = c->argv[ idx0 ];
2421                 if ( strncasecmp( argv0, "rwm-", STRLENOF( "rwm-" ) ) != 0 ) {
2422                         return 1;
2423                 }
2424                 c->argv[ idx0 ] += STRLENOF( "rwm-" );
2425                 if ( strcasecmp( c->argv[ idx0 ], "suffixmassage" ) == 0 ) {
2426                         rc = rwm_suffixmassage_config( &db, c->fname, c->lineno,
2427                                 c->argc - idx0, &c->argv[ idx0 ] );
2428
2429                 } else {
2430                         rc = rwm_rw_config( &db, c->fname, c->lineno,
2431                                 c->argc - idx0, &c->argv[ idx0 ] );
2432                 }
2433                 c->argv[ idx0 ] = argv0;
2434                 if ( rc ) {
2435                         return 1;
2436
2437                 } else {
2438                         rwm_bva_rewrite_add( rwmap, -1, &c->argv[ idx0 ] );
2439                 }
2440                 break;
2441
2442         case RWM_CF_T_F_SUPPORT:
2443                 rc = verb_to_mask( c->argv[ 1 ], t_f_mode );
2444                 if ( BER_BVISNULL( &t_f_mode[ rc ].word ) ) {
2445                         return 1;
2446                 }
2447
2448                 rwmap->rwm_flags &= ~RWM_F_SUPPORT_T_F_MASK2;
2449                 rwmap->rwm_flags |= t_f_mode[ rc ].mask;
2450                 rc = 0;
2451                 break;
2452
2453         case RWM_CF_MAP:
2454                 if ( c->valx >= 0 ) {
2455                         struct ldapmap rwm_oc = rwmap->rwm_oc;
2456                         struct ldapmap rwm_at = rwmap->rwm_at;
2457                         char *argv[5];
2458                         int cnt = 0;
2459
2460                         if ( rwmap->rwm_bva_map ) {
2461                                 for ( ; !BER_BVISNULL( &rwmap->rwm_bva_map[ cnt ] ); cnt++ )
2462                                         /* count */ ;
2463                         }
2464
2465                         if ( c->valx >= cnt ) {
2466                                 c->valx = cnt;
2467                         }
2468
2469                         memset( &rwmap->rwm_oc, 0, sizeof( rwmap->rwm_oc ) );
2470                         memset( &rwmap->rwm_at, 0, sizeof( rwmap->rwm_at ) );
2471
2472                         /* re-parse all mappings, including the one
2473                          * that needs to be added */
2474                         argv[0] = "map";
2475                         for ( cnt = 0; cnt < c->valx; cnt++ ) {
2476                                 ConfigArgs ca = { 0 };
2477
2478                                 ca.line = rwmap->rwm_bva_map[ cnt ].bv_val;
2479                                 ca.argc = 0;
2480                                 config_fp_parse_line( &ca );
2481
2482                                 argv[1] = ca.argv[0];
2483                                 argv[2] = ca.argv[1];
2484                                 argv[3] = ca.argv[2];
2485                                 argv[4] = ca.argv[3];
2486
2487                                 rc = rwm_m_config( &db, c->fname, c->lineno, ca.argc + 1, argv );
2488
2489                                 ch_free( ca.tline );
2490                                 ch_free( ca.argv );
2491
2492                                 /* in case of failure, restore
2493                                  * the existing mapping */
2494                                 if ( rc ) {
2495                                         goto rwmmap_fail;
2496                                 }
2497                         }
2498
2499                         argv0 = c->argv[0];
2500                         c->argv[0] = "map";
2501                         rc = rwm_m_config( &db, c->fname, c->lineno, c->argc, c->argv );
2502                         c->argv[0] = argv0;
2503                         if ( rc ) {
2504                                 goto rwmmap_fail;
2505                         }
2506
2507                         if ( rwmap->rwm_bva_map ) {
2508                                 for ( ; !BER_BVISNULL( &rwmap->rwm_bva_map[ cnt ] ); cnt++ ) {
2509                                         ConfigArgs ca = { 0 };
2510
2511                                         ca.line = rwmap->rwm_bva_map[ cnt ].bv_val;
2512                                         ca.argc = 0;
2513                                         config_fp_parse_line( &ca );
2514
2515                                         argv[1] = ca.argv[0];
2516                                         argv[2] = ca.argv[1];
2517                                         argv[3] = ca.argv[2];
2518                                         argv[4] = ca.argv[3];
2519
2520                                         rc = rwm_m_config( &db, c->fname, c->lineno, ca.argc + 1, argv );
2521
2522                                         ch_free( ca.tline );
2523                                         ch_free( ca.argv );
2524
2525                                         /* in case of failure, restore
2526                                          * the existing mapping */
2527                                         if ( rc ) {
2528                                                 goto rwmmap_fail;
2529                                         }
2530                                 }
2531                         }
2532
2533                         /* in case of success, destroy the old mapping
2534                          * and add the new one */
2535                         if ( rc == 0 ) {
2536                                 BerVarray tmp;
2537                                 struct berval bv, *bvp = &bv;
2538
2539                                 if ( rwm_bva_add( &bvp, 0, &c->argv[ idx0 ] ) ) {
2540                                         rc = 1;
2541                                         goto rwmmap_fail;
2542                                 }
2543
2544                                 tmp = ber_memrealloc( rwmap->rwm_bva_map,
2545                                         sizeof( struct berval )*( cnt + 2 ) );
2546                                 if ( tmp == NULL ) {
2547                                         ber_memfree( bv.bv_val );
2548                                         rc = 1;
2549                                         goto rwmmap_fail;
2550                                 }
2551                                 rwmap->rwm_bva_map = tmp;
2552                                 BER_BVZERO( &rwmap->rwm_bva_map[ cnt + 1 ] );
2553
2554                                 avl_free( rwm_oc.remap, rwm_mapping_dst_free );
2555                                 avl_free( rwm_oc.map, rwm_mapping_free );
2556                                 avl_free( rwm_at.remap, rwm_mapping_dst_free );
2557                                 avl_free( rwm_at.map, rwm_mapping_free );
2558
2559                                 for ( ; cnt-- > c->valx; ) {
2560                                         rwmap->rwm_bva_map[ cnt + 1 ] = rwmap->rwm_bva_map[ cnt ];
2561                                 }
2562                                 rwmap->rwm_bva_map[ c->valx ] = bv;
2563
2564                         } else {
2565 rwmmap_fail:;
2566                                 avl_free( rwmap->rwm_oc.remap, rwm_mapping_dst_free );
2567                                 avl_free( rwmap->rwm_oc.map, rwm_mapping_free );
2568                                 avl_free( rwmap->rwm_at.remap, rwm_mapping_dst_free );
2569                                 avl_free( rwmap->rwm_at.map, rwm_mapping_free );
2570                                 rwmap->rwm_oc = rwm_oc;
2571                                 rwmap->rwm_at = rwm_at;
2572                         }
2573
2574                         break;
2575                 }
2576
2577                 argv0 = c->argv[ 0 ];
2578                 c->argv[ 0 ] += STRLENOF( "rwm-" );
2579                 rc = rwm_m_config( &db, c->fname, c->lineno, c->argc, c->argv );
2580                 c->argv[ 0 ] = argv0;
2581                 if ( rc ) {
2582                         return 1;
2583
2584                 } else {
2585                         char            *line;
2586                         struct berval   bv;
2587
2588                         line = ldap_charray2str( &c->argv[ 1 ], " " );
2589                         if ( line != NULL ) {
2590                                 ber_str2bv( line, 0, 0, &bv );
2591                                 ber_bvarray_add( &rwmap->rwm_bva_map, &bv );
2592                         }
2593                 }
2594                 break;
2595
2596         case RWM_CF_NORMALIZE_MAPPED:
2597                 if ( c->value_int ) {
2598                         rwmap->rwm_flags |= RWM_F_NORMALIZE_MAPPED_ATTRS;
2599                 } else {
2600                         rwmap->rwm_flags &= ~RWM_F_NORMALIZE_MAPPED_ATTRS;
2601                 }
2602                 break;
2603
2604         case RWM_CF_DROP_UNREQUESTED:
2605                 if ( c->value_int ) {
2606                         rwmap->rwm_flags |= RWM_F_DROP_UNREQUESTED_ATTRS;
2607                 } else {
2608                         rwmap->rwm_flags &= ~RWM_F_DROP_UNREQUESTED_ATTRS;
2609                 }
2610                 break;
2611
2612         default:
2613                 assert( 0 );
2614                 return 1;
2615         }
2616
2617         return rc;
2618 }
2619
2620 static int
2621 rwm_db_init(
2622         BackendDB       *be,
2623         ConfigReply     *cr )
2624 {
2625         slap_overinst           *on = (slap_overinst *) be->bd_info;
2626         struct ldaprwmap        *rwmap;
2627         int                     rc = 0;
2628
2629         rwmap = (struct ldaprwmap *)ch_calloc( 1, sizeof( struct ldaprwmap ) );
2630
2631         /* default */
2632         rwmap->rwm_flags = RWM_F_DROP_UNREQUESTED_ATTRS;
2633
2634         rc = rwm_info_init( &rwmap->rwm_rw );
2635
2636         on->on_bi.bi_private = (void *)rwmap;
2637
2638         if ( rc ) {
2639                 (void)rwm_db_destroy( be, NULL );
2640         }
2641
2642         return rc;
2643 }
2644
2645 static int
2646 rwm_db_destroy(
2647         BackendDB       *be,
2648         ConfigReply     *cr )
2649 {
2650         slap_overinst   *on = (slap_overinst *) be->bd_info;
2651         int             rc = 0;
2652
2653         if ( on->on_bi.bi_private ) {
2654                 struct ldaprwmap        *rwmap =
2655                         (struct ldaprwmap *)on->on_bi.bi_private;
2656
2657                 if ( rwmap->rwm_rw ) {
2658                         rewrite_info_delete( &rwmap->rwm_rw );
2659                         if ( rwmap->rwm_bva_rewrite )
2660                                 ber_bvarray_free( rwmap->rwm_bva_rewrite );
2661                 }
2662
2663                 avl_free( rwmap->rwm_oc.remap, rwm_mapping_dst_free );
2664                 avl_free( rwmap->rwm_oc.map, rwm_mapping_free );
2665                 avl_free( rwmap->rwm_at.remap, rwm_mapping_dst_free );
2666                 avl_free( rwmap->rwm_at.map, rwm_mapping_free );
2667                 ber_bvarray_free( rwmap->rwm_bva_map );
2668
2669                 ch_free( rwmap );
2670         }
2671
2672         return rc;
2673 }
2674
2675 static slap_overinst rwm = { { NULL } };
2676
2677 #if SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC
2678 static
2679 #endif /* SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC */
2680 int
2681 rwm_initialize( void )
2682 {
2683         int             rc;
2684
2685         /* Make sure we don't exceed the bits reserved for userland */
2686         config_check_userland( RWM_CF_LAST );
2687
2688         memset( &rwm, 0, sizeof( slap_overinst ) );
2689
2690         rwm.on_bi.bi_type = "rwm";
2691         rwm.on_bi.bi_flags =
2692                 SLAPO_BFLAG_SINGLE |
2693                 0;
2694
2695         rwm.on_bi.bi_db_init = rwm_db_init;
2696         rwm.on_bi.bi_db_config = rwm_db_config;
2697         rwm.on_bi.bi_db_destroy = rwm_db_destroy;
2698
2699         rwm.on_bi.bi_op_bind = rwm_op_bind;
2700         rwm.on_bi.bi_op_search = rwm_op_search;
2701         rwm.on_bi.bi_op_compare = rwm_op_compare;
2702         rwm.on_bi.bi_op_modify = rwm_op_modify;
2703         rwm.on_bi.bi_op_modrdn = rwm_op_modrdn;
2704         rwm.on_bi.bi_op_add = rwm_op_add;
2705         rwm.on_bi.bi_op_delete = rwm_op_delete;
2706         rwm.on_bi.bi_op_unbind = rwm_op_unbind;
2707         rwm.on_bi.bi_extended = rwm_extended;
2708 #if 1 /* TODO */
2709         rwm.on_bi.bi_entry_release_rw = rwm_entry_release_rw;
2710         rwm.on_bi.bi_entry_get_rw = rwm_entry_get_rw;
2711 #endif
2712
2713         rwm.on_bi.bi_operational = rwm_operational;
2714         rwm.on_bi.bi_chk_referrals = 0 /* rwm_chk_referrals */ ;
2715
2716         rwm.on_bi.bi_connection_init = rwm_conn_init;
2717         rwm.on_bi.bi_connection_destroy = rwm_conn_destroy;
2718
2719         rwm.on_response = rwm_response;
2720
2721         rwm.on_bi.bi_cf_ocs = rwmocs;
2722
2723         rc = config_register_schema( rwmcfg, rwmocs );
2724         if ( rc ) {
2725                 return rc;
2726         }
2727
2728         return overlay_register( &rwm );
2729 }
2730
2731 #if SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC
2732 int
2733 init_module( int argc, char *argv[] )
2734 {
2735         return rwm_initialize();
2736 }
2737 #endif /* SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC */
2738
2739 #endif /* SLAPD_OVER_RWM */