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 2003-2005 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 "rwm.h"
  28
  29 static int
  30 rwm_op_dn_massage( Operation *op, SlapReply *rs, void *cookie )
  31 {
  32         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
  33         struct ldaprwmap        *rwmap =
  34                         (struct ldaprwmap *)on->on_bi.bi_private;
  35
  36         struct berval           dn = BER_BVNULL,
  37                                 ndn = BER_BVNULL;
  38         int                     rc = 0;
  39         dncookie                dc;
  40
  41         /*
  42          * Rewrite the dn if needed
  43          */
  44         dc.rwmap = rwmap;
  45 #ifdef ENABLE_REWRITE
  46         dc.conn = op->o_conn;
  47         dc.rs = rs;
  48         dc.ctx = (char *)cookie;
  49 #else /* ! ENABLE_REWRITE */
  50         dc.tofrom = ((int *)cookie)[0];
  51         dc.normalized = 0;
  52 #endif /* ! ENABLE_REWRITE */
  53
  54         /* NOTE: in those cases where only the ndn is available,
  55          * and the caller sets op->o_req_dn = op->o_req_ndn,
  56          * only rewrite the op->o_req_ndn and use it as
  57          * op->o_req_dn as well */
  58         ndn = op->o_req_ndn;
  59         if ( op->o_req_dn.bv_val != op->o_req_ndn.bv_val ) {
  60                 dn = op->o_req_dn;
  61                 rc = rwm_dn_massage_pretty_normalize( &dc, &op->o_req_dn, &dn, &ndn );
  62         } else {
  63                 rc = rwm_dn_massage_normalize( &dc, &op->o_req_ndn, &ndn );
  64         }
  65
  66         if ( rc != LDAP_SUCCESS ) {
  67                 return rc;
  68         }
  69
  70         if ( ( op->o_req_dn.bv_val != op->o_req_ndn.bv_val && dn.bv_val == op->o_req_dn.bv_val )
  71                         || ndn.bv_val == op->o_req_ndn.bv_val )
  72         {
  73                 return LDAP_SUCCESS;
  74         }
  75
  76         if ( op->o_req_dn.bv_val != op->o_req_ndn.bv_val ) {
  77                 op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );
  78                 op->o_req_dn = dn;
  79         } else {
  80                 op->o_req_dn = ndn;
  81         }
  82         op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );
  83         op->o_req_ndn = ndn;
  84
  85         return LDAP_SUCCESS;
  86 }
  87
  88 static int
  89 rwm_op_add( Operation *op, SlapReply *rs )
  90 {
  91         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
  92         struct ldaprwmap        *rwmap =
  93                         (struct ldaprwmap *)on->on_bi.bi_private;
  94
  95         int                     rc,
  96                                 i;
  97         Attribute               **ap = NULL;
  98         char                    *olddn = op->o_req_dn.bv_val;
  99         int                     isupdate;
 100
 101 #ifdef ENABLE_REWRITE
 102         rc = rwm_op_dn_massage( op, rs, "addDN" );
 103 #else /* ! ENABLE_REWRITE */
 104         rc = 1;
 105         rc = rwm_op_dn_massage( op, rs, &rc );
 106 #endif /* ! ENABLE_REWRITE */
 107         if ( rc != LDAP_SUCCESS ) {
 108                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 109                 send_ldap_error( op, rs, rc, "addDN massage error" );
 110                 return -1;
 111         }
 112
 113         if ( olddn != op->o_req_dn.bv_val ) {
 114                 ber_bvreplace( &op->ora_e->e_name, &op->o_req_dn );
 115                 ber_bvreplace( &op->ora_e->e_nname, &op->o_req_ndn );
 116         }
 117
 118         /* Count number of attributes in entry */
 119         isupdate = be_shadow_update( op );
 120         for ( i = 0, ap = &op->oq_add.rs_e->e_attrs; *ap; ) {
 121                 Attribute       *a;
 122
 123                 if ( (*ap)->a_desc == slap_schema.si_ad_objectClass ||
 124                                 (*ap)->a_desc == slap_schema.si_ad_structuralObjectClass )
 125                 {
 126                         int             j, last;
 127
 128                         for ( last = 0; !BER_BVISNULL( &(*ap)->a_vals[ last ] ); last++ )
 129                                         /* count values */ ;
 130                         last--;
 131                         for ( j = 0; !BER_BVISNULL( &(*ap)->a_vals[ j ] ); j++ ) {
 132                                 struct ldapmapping      *mapping = NULL;
 133
 134                                 ( void )rwm_mapping( &rwmap->rwm_oc, &(*ap)->a_vals[ j ],
 135                                                 &mapping, RWM_MAP );
 136                                 if ( mapping == NULL ) {
 137                                         if ( rwmap->rwm_at.drop_missing ) {
 138                                                 /* FIXME: we allow to remove objectClasses as well;
 139                                                  * if the resulting entry is inconsistent, that's
 140                                                  * the relayed database's business...
 141                                                  */
 142                                                 ch_free( (*ap)->a_vals[ j ].bv_val );
 143                                                 if ( last > j ) {
 144                                                         (*ap)->a_vals[ j ] = (*ap)->a_vals[ last ];
 145                                                 }
 146                                                 BER_BVZERO( &(*ap)->a_vals[ last ] );
 147                                                 last--;
 148                                                 j--;
 149                                         }
 150
 151                                 } else {
 152                                         ch_free( (*ap)->a_vals[ j ].bv_val );
 153                                         ber_dupbv( &(*ap)->a_vals[ j ], &mapping->m_dst );
 154                                 }
 155                         }
 156
 157                 } else if ( !isupdate && !get_manageDIT( op ) && (*ap)->a_desc->ad_type->sat_no_user_mod )
 158                 {
 159                         goto next_attr;
 160
 161                 } else {
 162                         struct ldapmapping      *mapping = NULL;
 163
 164                         ( void )rwm_mapping( &rwmap->rwm_at, &(*ap)->a_desc->ad_cname,
 165                                         &mapping, RWM_MAP );
 166                         if ( mapping == NULL ) {
 167                                 if ( rwmap->rwm_at.drop_missing ) {
 168                                         goto cleanup_attr;
 169                                 }
 170                         }
 171
 172                         if ( (*ap)->a_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 173                                         || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 174                         {
 175                                 /*
 176                                  * FIXME: rewrite could fail; in this case
 177                                  * the operation should give up, right?
 178                                  */
 179 #ifdef ENABLE_REWRITE
 180                                 rc = rwm_dnattr_rewrite( op, rs, "addAttrDN",
 181                                                 (*ap)->a_vals,
 182                                                 (*ap)->a_nvals ? &(*ap)->a_nvals : NULL );
 183 #else /* ! ENABLE_REWRITE */
 184                                 rc = 1;
 185                                 rc = rwm_dnattr_rewrite( op, rs, &rc, (*ap)->a_vals,
 186                                                 (*ap)->a_nvals ? &(*ap)->a_nvals : NULL );
 187 #endif /* ! ENABLE_REWRITE */
 188                                 if ( rc ) {
 189                                         goto cleanup_attr;
 190                                 }
 191
 192                         } else if ( (*ap)->a_desc == slap_schema.si_ad_ref ) {
 193 #ifdef ENABLE_REWRITE
 194                                 rc = rwm_referral_rewrite( op, rs, "referralAttrDN",
 195                                                 (*ap)->a_vals,
 196                                                 (*ap)->a_nvals ? &(*ap)->a_nvals : NULL );
 197 #else /* ! ENABLE_REWRITE */
 198                                 rc = 1;
 199                                 rc = rwm_referral_rewrite( op, rs, &rc, (*ap)->a_vals,
 200                                                 (*ap)->a_nvals ? &(*ap)->a_nvals : NULL );
 201 #endif /* ! ENABLE_REWRITE */
 202                                 if ( rc != LDAP_SUCCESS ) {
 203                                         goto cleanup_attr;
 204                                 }
 205                         }
 206
 207                         if ( mapping != NULL ) {
 208                                 assert( mapping->m_dst_ad != NULL );
 209                                 (*ap)->a_desc = mapping->m_dst_ad;
 210                         }
 211                 }
 212
 213 next_attr:;
 214                 ap = &(*ap)->a_next;
 215                 continue;
 216
 217 cleanup_attr:;
 218                 /* FIXME: leaking attribute/values? */
 219                 a = *ap;
 220
 221                 *ap = (*ap)->a_next;
 222                 attr_free( a );
 223         }
 224
 225         /* TODO: map attribute types, values of DN-valued attributes ... */
 226         return SLAP_CB_CONTINUE;
 227 }
 228
 229 #ifdef ENABLE_REWRITE
 230 static int
 231 rwm_conn_init( BackendDB *be, Connection *conn )
 232 {
 233         slap_overinst           *on = (slap_overinst *) be->bd_info;
 234         struct ldaprwmap        *rwmap =
 235                         (struct ldaprwmap *)on->on_bi.bi_private;
 236
 237         ( void )rewrite_session_init( rwmap->rwm_rw, conn );
 238
 239         return SLAP_CB_CONTINUE;
 240 }
 241
 242 static int
 243 rwm_conn_destroy( BackendDB *be, Connection *conn )
 244 {
 245         slap_overinst           *on = (slap_overinst *) be->bd_info;
 246         struct ldaprwmap        *rwmap =
 247                         (struct ldaprwmap *)on->on_bi.bi_private;
 248
 249         ( void )rewrite_session_delete( rwmap->rwm_rw, conn );
 250
 251         return SLAP_CB_CONTINUE;
 252 }
 253 #endif /* ENABLE_REWRITE */
 254
 255 static int
 256 rwm_op_bind( Operation *op, SlapReply *rs )
 257 {
 258         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 259         int                     rc;
 260
 261 #ifdef ENABLE_REWRITE
 262         rc = rwm_op_dn_massage( op, rs, "bindDN" );
 263 #else /* ! ENABLE_REWRITE */
 264         rc = 1;
 265         rc = rwm_op_dn_massage( op, rs, &rc );
 266 #endif /* ! ENABLE_REWRITE */
 267         if ( rc != LDAP_SUCCESS ) {
 268                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 269                 send_ldap_error( op, rs, rc, "bindDN massage error" );
 270                 return -1;
 271         }
 272
 273         return SLAP_CB_CONTINUE;
 274 }
 275
 276 static int
 277 rwm_op_unbind( Operation *op, SlapReply *rs )
 278 {
 279         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 280         struct ldaprwmap        *rwmap =
 281                         (struct ldaprwmap *)on->on_bi.bi_private;
 282
 283 #ifdef ENABLE_REWRITE
 284         rewrite_session_delete( rwmap->rwm_rw, op->o_conn );
 285 #endif /* ENABLE_REWRITE */
 286
 287         return SLAP_CB_CONTINUE;
 288 }
 289
 290 static int
 291 rwm_op_compare( Operation *op, SlapReply *rs )
 292 {
 293         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 294         struct ldaprwmap        *rwmap =
 295                         (struct ldaprwmap *)on->on_bi.bi_private;
 296
 297         int                     rc;
 298         struct berval           mapped_at = BER_BVNULL,
 299                                 mapped_vals[2] = { BER_BVNULL, BER_BVNULL };
 300
 301 #ifdef ENABLE_REWRITE
 302         rc = rwm_op_dn_massage( op, rs, "compareDN" );
 303 #else /* ! ENABLE_REWRITE */
 304         rc = 1;
 305         rc = rwm_op_dn_massage( op, rs, &rc );
 306 #endif /* ! ENABLE_REWRITE */
 307         if ( rc != LDAP_SUCCESS ) {
 308                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 309                 send_ldap_error( op, rs, rc, "compareDN massage error" );
 310                 return -1;
 311         }
 312
 313         /* if the attribute is an objectClass, try to remap its value */
 314         if ( op->orc_ava->aa_desc == slap_schema.si_ad_objectClass
 315                         || op->orc_ava->aa_desc == slap_schema.si_ad_structuralObjectClass )
 316         {
 317                 rwm_map( &rwmap->rwm_oc, &op->orc_ava->aa_value,
 318                                 &mapped_vals[0], RWM_MAP );
 319                 if ( BER_BVISNULL( &mapped_vals[0] ) || BER_BVISEMPTY( &mapped_vals[0] ) )
 320                 {
 321                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 322                         send_ldap_error( op, rs, LDAP_OTHER, "compare objectClass map error" );
 323                         return -1;
 324
 325                 } else if ( mapped_vals[0].bv_val != op->orc_ava->aa_value.bv_val ) {
 326                         ber_bvreplace_x( &op->orc_ava->aa_value, &mapped_vals[0], op->o_tmpmemctx );
 327                 }
 328                 mapped_at = op->orc_ava->aa_desc->ad_cname;
 329
 330         } else {
 331                 struct ldapmapping      *mapping = NULL;
 332                 AttributeDescription    *ad = op->orc_ava->aa_desc;
 333
 334                 ( void )rwm_mapping( &rwmap->rwm_at, &op->orc_ava->aa_desc->ad_cname,
 335                                 &mapping, RWM_MAP );
 336                 if ( mapping == NULL ) {
 337                         if ( rwmap->rwm_at.drop_missing ) {
 338                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 339                                 send_ldap_error( op, rs, LDAP_OTHER, "compare attributeType map error" );
 340                                 return -1;
 341                         }
 342
 343                 } else {
 344                         assert( mapping->m_dst_ad != NULL );
 345                         ad = mapping->m_dst_ad;
 346                 }
 347
 348                 if ( op->orc_ava->aa_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 349                                 || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 350                 {
 351                         struct berval   *mapped_valsp[2];
 352
 353                         mapped_valsp[0] = &mapped_vals[0];
 354                         mapped_valsp[1] = &mapped_vals[1];
 355
 356                         mapped_vals[0] = op->orc_ava->aa_value;
 357
 358 #ifdef ENABLE_REWRITE
 359                         rc = rwm_dnattr_rewrite( op, rs, "compareAttrDN", NULL, mapped_valsp );
 360 #else /* ! ENABLE_REWRITE */
 361                         rc = 1;
 362                         rc = rwm_dnattr_rewrite( op, rs, &rc, NULL, mapped_valsp );
 363 #endif /* ! ENABLE_REWRITE */
 364
 365                         if ( rc != LDAP_SUCCESS ) {
 366                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 367                                 send_ldap_error( op, rs, rc, "compareAttrDN massage error" );
 368                                 return -1;
 369                         }
 370
 371                         if ( mapped_vals[ 0 ].bv_val != op->orc_ava->aa_value.bv_val ) {
 372                                 /* NOTE: if we get here, rwm_dnattr_rewrite()
 373                                  * already freed the old value, so now
 374                                  * it's invalid */
 375                                 ber_dupbv_x( &op->orc_ava->aa_value, &mapped_vals[0],
 376                                                 op->o_tmpmemctx );
 377                                 ber_memfree_x( mapped_vals[ 0 ].bv_val, NULL );
 378                         }
 379                 }
 380                 op->orc_ava->aa_desc = ad;
 381         }
 382
 383         return SLAP_CB_CONTINUE;
 384 }
 385
 386 static int
 387 rwm_op_delete( Operation *op, SlapReply *rs )
 388 {
 389         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 390         int                     rc;
 391
 392 #ifdef ENABLE_REWRITE
 393         rc = rwm_op_dn_massage( op, rs, "deleteDN" );
 394 #else /* ! ENABLE_REWRITE */
 395         rc = 1;
 396         rc = rwm_op_dn_massage( op, rs, &rc );
 397 #endif /* ! ENABLE_REWRITE */
 398         if ( rc != LDAP_SUCCESS ) {
 399                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 400                 send_ldap_error( op, rs, rc, "deleteDN massage error" );
 401                 return -1;
 402         }
 403
 404         return SLAP_CB_CONTINUE;
 405 }
 406
 407 static int
 408 rwm_op_modify( Operation *op, SlapReply *rs )
 409 {
 410         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 411         struct ldaprwmap        *rwmap =
 412                         (struct ldaprwmap *)on->on_bi.bi_private;
 413
 414         int                     isupdate;
 415         Modifications           **mlp;
 416         int                     rc;
 417
 418 #ifdef ENABLE_REWRITE
 419         rc = rwm_op_dn_massage( op, rs, "modifyDN" );
 420 #else /* ! ENABLE_REWRITE */
 421         rc = 1;
 422         rc = rwm_op_dn_massage( op, rs, &rc );
 423 #endif /* ! ENABLE_REWRITE */
 424         if ( rc != LDAP_SUCCESS ) {
 425                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 426                 send_ldap_error( op, rs, rc, "modifyDN massage error" );
 427                 return -1;
 428         }
 429
 430         isupdate = be_shadow_update( op );
 431         for ( mlp = &op->oq_modify.rs_modlist; *mlp; ) {
 432                 int                     is_oc = 0;
 433                 Modifications           *ml;
 434                 struct ldapmapping      *mapping = NULL;
 435
 436                 if ( (*mlp)->sml_desc == slap_schema.si_ad_objectClass
 437                                 || (*mlp)->sml_desc == slap_schema.si_ad_structuralObjectClass )
 438                 {
 439                         is_oc = 1;
 440
 441                 } else if ( !isupdate && !get_manageDIT( op ) && (*mlp)->sml_desc->ad_type->sat_no_user_mod  )
 442                 {
 443                         goto next_mod;
 444
 445                 } else {
 446                         int                     drop_missing;
 447
 448                         drop_missing = rwm_mapping( &rwmap->rwm_at,
 449                                         &(*mlp)->sml_desc->ad_cname,
 450                                         &mapping, RWM_MAP );
 451                         if ( drop_missing || ( mapping != NULL && BER_BVISNULL( &mapping->m_dst ) ) )
 452                         {
 453                                 goto cleanup_mod;
 454                         }
 455                 }
 456
 457                 if ( (*mlp)->sml_values != NULL ) {
 458                         if ( is_oc ) {
 459                                 int     last, j;
 460
 461                                 for ( last = 0; !BER_BVISNULL( &(*mlp)->sml_values[ last ] ); last++ )
 462                                         /* count values */ ;
 463                                 last--;
 464
 465                                 for ( j = 0; !BER_BVISNULL( &(*mlp)->sml_values[ j ] ); j++ ) {
 466                                         struct ldapmapping      *oc_mapping = NULL;
 467
 468                                         ( void )rwm_mapping( &rwmap->rwm_oc, &(*mlp)->sml_values[ j ],
 469                                                         &oc_mapping, RWM_MAP );
 470                                         if ( oc_mapping == NULL ) {
 471                                                 if ( rwmap->rwm_at.drop_missing ) {
 472                                                         /* FIXME: we allow to remove objectClasses as well;
 473                                                          * if the resulting entry is inconsistent, that's
 474                                                          * the relayed database's business...
 475                                                          */
 476                                                         ch_free( (*mlp)->sml_values[ j ].bv_val );
 477                                                         if ( last > j ) {
 478                                                                 (*mlp)->sml_values[ j ] = (*mlp)->sml_values[ last ];
 479                                                         }
 480                                                         BER_BVZERO( &(*mlp)->sml_values[ last ] );
 481                                                         last--;
 482                                                         j--;
 483                                                 }
 484
 485                                         } else {
 486                                                 ch_free( (*mlp)->sml_values[ j ].bv_val );
 487                                                 ber_dupbv( &(*mlp)->sml_values[ j ], &oc_mapping->m_dst );
 488                                         }
 489                                 }
 490
 491                         } else {
 492                                 if ( (*mlp)->sml_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 493                                                 || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 494                                 {
 495 #ifdef ENABLE_REWRITE
 496                                         rc = rwm_dnattr_rewrite( op, rs, "modifyAttrDN",
 497                                                         (*mlp)->sml_values,
 498                                                         (*mlp)->sml_nvalues ? &(*mlp)->sml_nvalues : NULL );
 499 #else /* ! ENABLE_REWRITE */
 500                                         rc = 1;
 501                                         rc = rwm_dnattr_rewrite( op, rs, &rc,
 502                                                         (*mlp)->sml_values,
 503                                                         (*mlp)->sml_nvalues ? &(*mlp)->sml_nvalues : NULL );
 504 #endif /* ! ENABLE_REWRITE */
 505
 506                                 } else if ( (*mlp)->sml_desc == slap_schema.si_ad_ref ) {
 507 #ifdef ENABLE_REWRITE
 508                                         rc = rwm_referral_rewrite( op, rs,
 509                                                         "referralAttrDN",
 510                                                         (*mlp)->sml_values,
 511                                                         (*mlp)->sml_nvalues ? &(*mlp)->sml_nvalues : NULL );
 512 #else /* ! ENABLE_REWRITE */
 513                                         rc = 1;
 514                                         rc = rwm_referral_rewrite( op, rs, &rc,
 515                                                         (*mlp)->sml_values,
 516                                                         (*mlp)->sml_nvalues ? &(*mlp)->sml_nvalues : NULL );
 517 #endif /* ! ENABLE_REWRITE */
 518                                         if ( rc != LDAP_SUCCESS ) {
 519                                                 goto cleanup_mod;
 520                                         }
 521                                 }
 522
 523                                 if ( rc != LDAP_SUCCESS ) {
 524                                         goto cleanup_mod;
 525                                 }
 526                         }
 527                 }
 528
 529 next_mod:;
 530                 if ( mapping != NULL ) {
 531                         /* use new attribute description */
 532                         assert( mapping->m_dst_ad != NULL );
 533                         (*mlp)->sml_desc = mapping->m_dst_ad;
 534                 }
 535
 536                 mlp = &(*mlp)->sml_next;
 537                 continue;
 538
 539 cleanup_mod:;
 540                 ml = *mlp;
 541                 *mlp = (*mlp)->sml_next;
 542                 slap_mod_free( &ml->sml_mod, 0 );
 543                 free( ml );
 544         }
 545
 546         return SLAP_CB_CONTINUE;
 547 }
 548
 549 static int
 550 rwm_op_modrdn( Operation *op, SlapReply *rs )
 551 {
 552         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 553         struct ldaprwmap        *rwmap =
 554                         (struct ldaprwmap *)on->on_bi.bi_private;
 555
 556         int                     rc;
 557
 558         if ( op->orr_newSup ) {
 559                 dncookie        dc;
 560                 struct berval   nnewSup = BER_BVNULL;
 561                 struct berval   newSup = BER_BVNULL;
 562
 563                 /*
 564                  * Rewrite the new superior, if defined and required
 565                  */
 566                 dc.rwmap = rwmap;
 567 #ifdef ENABLE_REWRITE
 568                 dc.conn = op->o_conn;
 569                 dc.rs = rs;
 570                 dc.ctx = "newSuperiorDN";
 571 #else /* ! ENABLE_REWRITE */
 572                 dc.tofrom = 0;
 573                 dc.normalized = 0;
 574 #endif /* ! ENABLE_REWRITE */
 575                 newSup = *op->orr_newSup;
 576                 nnewSup = *op->orr_nnewSup;
 577                 rc = rwm_dn_massage_pretty_normalize( &dc, op->orr_newSup, &newSup, &nnewSup );
 578                 if ( rc != LDAP_SUCCESS ) {
 579                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 580                         send_ldap_error( op, rs, rc, "newSuperiorDN massage error" );
 581                         return -1;
 582                 }
 583
 584                 if ( op->orr_newSup->bv_val != newSup.bv_val ) {
 585                         op->o_tmpfree( op->orr_newSup->bv_val, op->o_tmpmemctx );
 586                         op->o_tmpfree( op->orr_nnewSup->bv_val, op->o_tmpmemctx );
 587                         *op->orr_newSup = newSup;
 588                         *op->orr_nnewSup = nnewSup;
 589                 }
 590         }
 591
 592         /*
 593          * Rewrite the dn, if needed
 594          */
 595 #ifdef ENABLE_REWRITE
 596         rc = rwm_op_dn_massage( op, rs, "renameDN" );
 597 #else /* ! ENABLE_REWRITE */
 598         rc = 1;
 599         rc = rwm_op_dn_massage( op, rs, &rc );
 600 #endif /* ! ENABLE_REWRITE */
 601         if ( rc != LDAP_SUCCESS ) {
 602                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 603                 send_ldap_error( op, rs, rc, "renameDN massage error" );
 604                 return -1;
 605         }
 606
 607         /* TODO: rewrite newRDN, attribute types,
 608          * values of DN-valued attributes ... */
 609         return SLAP_CB_CONTINUE;
 610 }
 611
 612 static slap_callback    rwm_cb;
 613
 614 static void
 615 rwm_keyfree(
 616         void            *key,
 617         void            *data )
 618 {
 619         ber_memfree_x( data, NULL );
 620 }
 621
 622 static slap_callback *
 623 rwm_callback_get( Operation *op )
 624 {
 625         void            *data = NULL;
 626
 627         if ( op->o_threadctx == NULL ) {
 628                 return &rwm_cb;
 629         }
 630
 631         ldap_pvt_thread_pool_getkey( op->o_threadctx,
 632                         rwm_keyfree, &data, NULL );
 633         if ( data == NULL ) {
 634                 data = ch_calloc( sizeof( slap_callback ), 1 );
 635                 ldap_pvt_thread_pool_setkey( op->o_threadctx,
 636                                 rwm_keyfree, data, rwm_keyfree );
 637         }
 638
 639         return (slap_callback *)data;
 640 }
 641
 642 static int
 643 rwm_swap_attrs( Operation *op, SlapReply *rs )
 644 {
 645         slap_callback   *cb = op->o_callback;
 646         AttributeName   *an = (AttributeName *)cb->sc_private;
 647
 648         rs->sr_attrs = an;
 649
 650         return SLAP_CB_CONTINUE;
 651 }
 652
 653 static int
 654 rwm_op_search( Operation *op, SlapReply *rs )
 655 {
 656         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 657         struct ldaprwmap        *rwmap =
 658                         (struct ldaprwmap *)on->on_bi.bi_private;
 659
 660         int                     rc;
 661         dncookie                dc;
 662
 663         struct berval           fstr = BER_BVNULL;
 664         Filter                  *f = NULL;
 665
 666         slap_callback           *cb = NULL;
 667         AttributeName           *an = NULL;
 668
 669         char                    *text = NULL;
 670
 671 #ifdef ENABLE_REWRITE
 672         rc = rwm_op_dn_massage( op, rs, "searchDN" );
 673 #else /* ! ENABLE_REWRITE */
 674         rc = 1;
 675         rc = rwm_op_dn_massage( op, rs, &rc );
 676 #endif /* ! ENABLE_REWRITE */
 677         if ( rc != LDAP_SUCCESS ) {
 678                 text = "searchDN massage error";
 679                 goto error_return;
 680         }
 681
 682         /*
 683          * Rewrite the dn if needed
 684          */
 685         dc.rwmap = rwmap;
 686 #ifdef ENABLE_REWRITE
 687         dc.conn = op->o_conn;
 688         dc.rs = rs;
 689         dc.ctx = "searchFilterAttrDN";
 690 #else /* ! ENABLE_REWRITE */
 691         dc.tofrom = 0;
 692         dc.normalized = 0;
 693 #endif /* ! ENABLE_REWRITE */
 694
 695         rc = rwm_filter_map_rewrite( &dc, op->ors_filter, &fstr );
 696         if ( rc != LDAP_SUCCESS ) {
 697                 text = "searchFilter/searchFilterAttrDN massage error";
 698                 goto error_return;
 699         }
 700
 701         f = str2filter_x( op, fstr.bv_val );
 702
 703         if ( f == NULL ) {
 704                 text = "massaged filter parse error";
 705                 goto error_return;
 706         }
 707
 708         if ( !BER_BVISNULL( &op->ors_filterstr ) ) {
 709                 ch_free( op->ors_filterstr.bv_val );
 710         }
 711
 712         if( op->ors_filter ) {
 713                 filter_free_x( op, op->ors_filter );
 714         }
 715
 716         op->ors_filter = f;
 717         op->ors_filterstr = fstr;
 718
 719         rc = rwm_map_attrnames( &rwmap->rwm_at, &rwmap->rwm_oc,
 720                         op->ors_attrs, &an, RWM_MAP );
 721         if ( rc != LDAP_SUCCESS ) {
 722                 text = "attribute list mapping error";
 723                 goto error_return;
 724         }
 725
 726         cb = rwm_callback_get( op );
 727
 728         cb->sc_response = rwm_swap_attrs;
 729         cb->sc_cleanup = NULL;
 730         cb->sc_private = (void *)op->ors_attrs;
 731         cb->sc_next = op->o_callback;
 732
 733         op->o_callback = cb;
 734         op->ors_attrs = an;
 735
 736         return SLAP_CB_CONTINUE;
 737
 738 error_return:;
 739         if ( an != NULL ) {
 740                 ch_free( an );
 741         }
 742
 743         if ( f != NULL ) {
 744                 filter_free_x( op, f );
 745         }
 746
 747         if ( !BER_BVISNULL( &fstr ) ) {
 748                 ch_free( fstr.bv_val );
 749         }
 750
 751         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 752         send_ldap_error( op, rs, rc, text );
 753
 754         return -1;
 755
 756 }
 757
 758 static int
 759 rwm_extended( Operation *op, SlapReply *rs )
 760 {
 761         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 762         int                     rc;
 763
 764 #ifdef ENABLE_REWRITE
 765         rc = rwm_op_dn_massage( op, rs, "extendedDN" );
 766 #else /* ! ENABLE_REWRITE */
 767         rc = 1;
 768         rc = rwm_op_dn_massage( op, rs, &rc );
 769 #endif /* ! ENABLE_REWRITE */
 770         if ( rc != LDAP_SUCCESS ) {
 771                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 772                 send_ldap_error( op, rs, rc, "extendedDN massage error" );
 773                 return -1;
 774         }
 775
 776         /* TODO: rewrite/map extended data ? ... */
 777         return SLAP_CB_CONTINUE;
 778 }
 779
 780 static int
 781 rwm_matched( Operation *op, SlapReply *rs )
 782 {
 783         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 784         struct ldaprwmap        *rwmap =
 785                         (struct ldaprwmap *)on->on_bi.bi_private;
 786
 787         struct berval           dn, mdn;
 788         dncookie                dc;
 789         int                     rc;
 790
 791         if ( rs->sr_matched == NULL ) {
 792                 return SLAP_CB_CONTINUE;
 793         }
 794
 795         dc.rwmap = rwmap;
 796 #ifdef ENABLE_REWRITE
 797         dc.conn = op->o_conn;
 798         dc.rs = rs;
 799         dc.ctx = "matchedDN";
 800 #else /* ! ENABLE_REWRITE */
 801         dc.tofrom = 0;
 802         dc.normalized = 0;
 803 #endif /* ! ENABLE_REWRITE */
 804         ber_str2bv( rs->sr_matched, 0, 0, &dn );
 805         mdn = dn;
 806         rc = rwm_dn_massage_pretty( &dc, &dn, &mdn );
 807         if ( rc != LDAP_SUCCESS ) {
 808                 rs->sr_err = rc;
 809                 rs->sr_text = "Rewrite error";
 810                 return 1;
 811         }
 812
 813         if ( mdn.bv_val != dn.bv_val ) {
 814                 if ( rs->sr_flags & REP_MATCHED_MUSTBEFREED ) {
 815                         ch_free( (void *)rs->sr_matched );
 816
 817                 } else {
 818                         rs->sr_flags |= REP_MATCHED_MUSTBEFREED;
 819                 }
 820                 rs->sr_matched = mdn.bv_val;
 821         }
 822
 823         return SLAP_CB_CONTINUE;
 824 }
 825
 826 static int
 827 rwm_attrs( Operation *op, SlapReply *rs, Attribute** a_first, int stripEntryDN )
 828 {
 829         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 830         struct ldaprwmap        *rwmap =
 831                         (struct ldaprwmap *)on->on_bi.bi_private;
 832
 833         dncookie                dc;
 834         int                     rc;
 835         Attribute               **ap;
 836         int                     isupdate;
 837
 838         /*
 839          * Rewrite the dn attrs, if needed
 840          */
 841         dc.rwmap = rwmap;
 842 #ifdef ENABLE_REWRITE
 843         dc.conn = op->o_conn;
 844         dc.rs = NULL;
 845 #else /* ! ENABLE_REWRITE */
 846         dc.tofrom = 0;
 847         dc.normalized = 0;
 848 #endif /* ! ENABLE_REWRITE */
 849
 850         /* FIXME: the entries are in the remote mapping form;
 851          * so we need to select those attributes we are willing
 852          * to return, and remap them accordingly */
 853
 854         /* FIXME: in principle, one could map an attribute
 855          * on top of another, which already exists.
 856          * As such, in the end there might exist more than
 857          * one instance of an attribute.
 858          * We should at least check if this occurs, and issue
 859          * an error (because multiple instances of attrs in
 860          * response are not valid), or merge the values (what
 861          * about duplicate values?) */
 862         isupdate = be_shadow_update( op );
 863         for ( ap = a_first; *ap; ) {
 864                 struct ldapmapping      *mapping = NULL;
 865                 int                     drop_missing;
 866                 int                     last;
 867                 Attribute               *a;
 868
 869                 if ( SLAP_OPATTRS( rs->sr_attr_flags ) && is_at_operational( (*ap)->a_desc->ad_type ) )
 870                 {
 871                         /* go on */ ;
 872
 873                 } else {
 874                         if ( op->ors_attrs != NULL &&
 875                                         !SLAP_USERATTRS( rs->sr_attr_flags ) &&
 876                                         !ad_inlist( (*ap)->a_desc, op->ors_attrs ) )
 877                         {
 878                                 goto cleanup_attr;
 879                         }
 880
 881                         drop_missing = rwm_mapping( &rwmap->rwm_at,
 882                                         &(*ap)->a_desc->ad_cname, &mapping, RWM_REMAP );
 883                         if ( drop_missing || ( mapping != NULL && BER_BVISEMPTY( &mapping->m_dst ) ) )
 884                         {
 885                                 goto cleanup_attr;
 886                         }
 887
 888                         if ( mapping != NULL ) {
 889                                 (*ap)->a_desc = mapping->m_dst_ad;
 890                         }
 891                 }
 892
 893                 if ( (*ap)->a_desc == slap_schema.si_ad_entryDN ) {
 894                         if ( stripEntryDN ) {
 895                                 /* will be generated by frontend */
 896                                 goto cleanup_attr;
 897                         }
 898
 899                 } else if ( !isupdate
 900                         && !get_manageDIT( op )
 901                         && (*ap)->a_desc->ad_type->sat_no_user_mod
 902                         && (*ap)->a_desc->ad_type != slap_schema.si_at_undefined )
 903                 {
 904                         goto next_attr;
 905                 }
 906
 907                 for ( last = 0; !BER_BVISNULL( &(*ap)->a_vals[last] ); last++ )
 908                         /* just count */ ;
 909
 910                 if ( last == 0 ) {
 911                         /* empty? leave it in place because of attrsonly and vlv */
 912                         goto next_attr;
 913                 }
 914                 last--;
 915
 916                 if ( (*ap)->a_desc == slap_schema.si_ad_objectClass
 917                                 || (*ap)->a_desc == slap_schema.si_ad_structuralObjectClass )
 918                 {
 919                         struct berval   *bv;
 920
 921                         for ( bv = (*ap)->a_vals; !BER_BVISNULL( bv ); bv++ ) {
 922                                 struct berval   mapped;
 923
 924                                 rwm_map( &rwmap->rwm_oc, &bv[0], &mapped, RWM_REMAP );
 925                                 if ( BER_BVISNULL( &mapped ) || BER_BVISEMPTY( &mapped ) ) {
 926                                         ch_free( bv[0].bv_val );
 927                                         BER_BVZERO( &bv[0] );
 928                                         if ( &(*ap)->a_vals[last] > &bv[0] ) {
 929                                                 bv[0] = (*ap)->a_vals[last];
 930                                                 BER_BVZERO( &(*ap)->a_vals[last] );
 931                                         }
 932                                         last--;
 933                                         bv--;
 934
 935                                 } else if ( mapped.bv_val != bv[0].bv_val ) {
 936                                         /*
 937                                          * FIXME: after LBER_FREEing
 938                                          * the value is replaced by
 939                                          * ch_alloc'ed memory
 940                                          */
 941                                         ber_bvreplace( &bv[0], &mapped );
 942                                 }
 943                         }
 944
 945                 /*
 946                  * It is necessary to try to rewrite attributes with
 947                  * dn syntax because they might be used in ACLs as
 948                  * members of groups; since ACLs are applied to the
 949                  * rewritten stuff, no dn-based subject clause could
 950                  * be used at the ldap backend side (see
 951                  * http://www.OpenLDAP.org/faq/data/cache/452.html)
 952                  * The problem can be overcome by moving the dn-based
 953                  * ACLs to the target directory server, and letting
 954                  * everything pass thru the ldap backend. */
 955                 /* FIXME: handle distinguishedName-like syntaxes, like
 956                  * nameAndOptionalUID */
 957                 } else if ( (*ap)->a_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 958                                 || ( mapping != NULL && mapping->m_src_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 959                 {
 960 #ifdef ENABLE_REWRITE
 961                         dc.ctx = "searchAttrDN";
 962 #endif /* ENABLE_REWRITE */
 963                         rc = rwm_dnattr_result_rewrite( &dc, (*ap)->a_vals );
 964                         if ( rc != LDAP_SUCCESS ) {
 965                                 goto cleanup_attr;
 966                         }
 967
 968                 } else if ( (*ap)->a_desc == slap_schema.si_ad_ref ) {
 969 #ifdef ENABLE_REWRITE
 970                         dc.ctx = "searchAttrDN";
 971 #endif /* ENABLE_REWRITE */
 972                         rc = rwm_referral_result_rewrite( &dc, (*ap)->a_vals );
 973                         if ( rc != LDAP_SUCCESS ) {
 974                                 goto cleanup_attr;
 975                         }
 976                 }
 977
 978                 if ( mapping != NULL ) {
 979                         /* rewrite the attribute description */
 980                         assert( mapping->m_dst_ad != NULL );
 981                         (*ap)->a_desc = mapping->m_dst_ad;
 982                 }
 983
 984 next_attr:;
 985                 ap = &(*ap)->a_next;
 986                 continue;
 987
 988 cleanup_attr:;
 989                 a = *ap;
 990                 *ap = (*ap)->a_next;
 991
 992                 attr_free( a );
 993         }
 994
 995         return 0;
 996 }
 997
 998 static int
 999 rwm_send_entry( Operation *op, SlapReply *rs )
1000 {
1001         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
1002         struct ldaprwmap        *rwmap =
1003                         (struct ldaprwmap *)on->on_bi.bi_private;
1004
1005         Entry                   *e = NULL;
1006         slap_mask_t             flags;
1007         struct berval           dn = BER_BVNULL,
1008                                 ndn = BER_BVNULL;
1009         dncookie                dc;
1010         int                     rc;
1011
1012         assert( rs->sr_entry != NULL );
1013
1014         /*
1015          * Rewrite the dn of the result, if needed
1016          */
1017         dc.rwmap = rwmap;
1018 #ifdef ENABLE_REWRITE
1019         dc.conn = op->o_conn;
1020         dc.rs = NULL;
1021         dc.ctx = "searchEntryDN";
1022 #else /* ! ENABLE_REWRITE */
1023         dc.tofrom = 0;
1024         dc.normalized = 0;
1025 #endif /* ! ENABLE_REWRITE */
1026
1027         e = rs->sr_entry;
1028         flags = rs->sr_flags;
1029         if ( !( rs->sr_flags & REP_ENTRY_MODIFIABLE ) ) {
1030                 /* FIXME: all we need to duplicate are:
1031                  * - dn
1032                  * - ndn
1033                  * - attributes that are requested
1034                  * - no values if attrsonly is set
1035                  */
1036
1037                 e = entry_dup( e );
1038                 if ( e == NULL ) {
1039                         rc = LDAP_NO_MEMORY;
1040                         goto fail;
1041                 }
1042
1043                 flags |= ( REP_ENTRY_MODIFIABLE | REP_ENTRY_MUSTBEFREED );
1044         }
1045
1046         /*
1047          * Note: this may fail if the target host(s) schema differs
1048          * from the one known to the meta, and a DN with unknown
1049          * attributes is returned.
1050          */
1051         dn = e->e_name;
1052         ndn = e->e_nname;
1053         rc = rwm_dn_massage_pretty_normalize( &dc, &e->e_name, &dn, &ndn );
1054         if ( rc != LDAP_SUCCESS ) {
1055                 rc = 1;
1056                 goto fail;
1057         }
1058
1059         if ( e->e_name.bv_val != dn.bv_val ) {
1060                 ch_free( e->e_name.bv_val );
1061                 ch_free( e->e_nname.bv_val );
1062
1063                 e->e_name = dn;
1064                 e->e_nname = ndn;
1065         }
1066
1067         /* TODO: map entry attribute types, objectclasses
1068          * and dn-valued attribute values */
1069
1070         /* FIXME: the entries are in the remote mapping form;
1071          * so we need to select those attributes we are willing
1072          * to return, and remap them accordingly */
1073         (void)rwm_attrs( op, rs, &e->e_attrs, 1 );
1074
1075 #if 0
1076         if ( rs->sr_operational_attrs ) {
1077                 (void)rwm_attrs( op, rs, &rs->sr_operational_attrs, 0 );
1078         }
1079 #endif
1080
1081         rs->sr_entry = e;
1082         rs->sr_flags = flags;
1083
1084         return SLAP_CB_CONTINUE;
1085
1086 fail:;
1087         if ( e != NULL && e != rs->sr_entry ) {
1088                 if ( e->e_name.bv_val == dn.bv_val ) {
1089                         BER_BVZERO( &e->e_name );
1090                 }
1091
1092                 if ( e->e_nname.bv_val == ndn.bv_val ) {
1093                         BER_BVZERO( &e->e_nname );
1094                 }
1095
1096                 entry_free( e );
1097         }
1098
1099         if ( !BER_BVISNULL( &dn ) ) {
1100                 ch_free( dn.bv_val );
1101         }
1102
1103         if ( !BER_BVISNULL( &ndn ) ) {
1104                 ch_free( ndn.bv_val );
1105         }
1106
1107         return rc;
1108 }
1109
1110 static int
1111 rwm_operational( Operation *op, SlapReply *rs )
1112 {
1113         /* FIXME: the entries are in the remote mapping form;
1114          * so we need to select those attributes we are willing
1115          * to return, and remap them accordingly */
1116         if ( rs->sr_operational_attrs ) {
1117                 rwm_attrs( op, rs, &rs->sr_operational_attrs, 1 );
1118         }
1119
1120         return SLAP_CB_CONTINUE;
1121 }
1122
1123 #if 0
1124 /* don't use this; it cannot be reverted, and leaves op->o_req_dn
1125  * rewritten for subsequent operations; fine for plain suffixmassage,
1126  * but destroys everything else */
1127 static int
1128 rwm_chk_referrals( Operation *op, SlapReply *rs )
1129 {
1130         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
1131         int                     rc;
1132
1133 #ifdef ENABLE_REWRITE
1134         rc = rwm_op_dn_massage( op, rs, "referralCheckDN" );
1135 #else /* ! ENABLE_REWRITE */
1136         rc = 1;
1137         rc = rwm_op_dn_massage( op, rs, &rc );
1138 #endif /* ! ENABLE_REWRITE */
1139         if ( rc != LDAP_SUCCESS ) {
1140                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1141                 send_ldap_error( op, rs, rc, "referralCheckDN massage error" );
1142                 return -1;
1143         }
1144
1145         return SLAP_CB_CONTINUE;
1146 }
1147 #endif
1148
1149 static int
1150 rwm_rw_config(
1151     BackendDB   *be,
1152     const char  *fname,
1153     int         lineno,
1154     int         argc,
1155     char        **argv
1156 )
1157 {
1158 #ifdef ENABLE_REWRITE
1159         slap_overinst           *on = (slap_overinst *) be->bd_info;
1160         struct ldaprwmap        *rwmap =
1161                         (struct ldaprwmap *)on->on_bi.bi_private;
1162
1163         return rewrite_parse( rwmap->rwm_rw,
1164                                 fname, lineno, argc, argv );
1165
1166 #else /* !ENABLE_REWRITE */
1167         fprintf( stderr, "%s: line %d: rewrite capabilities "
1168                         "are not enabled\n", fname, lineno );
1169 #endif /* !ENABLE_REWRITE */
1170
1171         return 0;
1172 }
1173
1174 static int
1175 rwm_suffixmassage_config(
1176     BackendDB   *be,
1177     const char  *fname,
1178     int         lineno,
1179     int         argc,
1180     char        **argv
1181 )
1182 {
1183         slap_overinst           *on = (slap_overinst *) be->bd_info;
1184         struct ldaprwmap        *rwmap =
1185                         (struct ldaprwmap *)on->on_bi.bi_private;
1186
1187         struct berval           bvnc, nvnc, pvnc, brnc, nrnc, prnc;
1188         int                     massaged;
1189 #ifdef ENABLE_REWRITE
1190         int                     rc;
1191 #endif /* ENABLE_REWRITE */
1192
1193         /*
1194          * syntax:
1195          *
1196          *      suffixmassage [<suffix>] <massaged suffix>
1197          *
1198          * the [<suffix>] field must be defined as a valid suffix
1199          * for the current database;
1200          * the <massaged suffix> shouldn't have already been
1201          * defined as a valid suffix for the current server
1202          */
1203         if ( argc == 2 ) {
1204                 if ( be->be_suffix == NULL ) {
1205                         fprintf( stderr, "%s: line %d: "
1206                                        " \"suffixMassage [<suffix>]"
1207                                        " <massaged suffix>\" without "
1208                                        "<suffix> part requires database "
1209                                        "suffix be defined first.\n",
1210                                 fname, lineno );
1211                         return 1;
1212                 }
1213                 bvnc = be->be_suffix[ 0 ];
1214                 massaged = 1;
1215
1216         } else if ( argc == 3 ) {
1217                 ber_str2bv( argv[ 1 ], 0, 0, &bvnc );
1218                 massaged = 2;
1219
1220         } else  {
1221                 fprintf( stderr, "%s: line %d: syntax is"
1222                                " \"suffixMassage [<suffix>]"
1223                                " <massaged suffix>\"\n",
1224                         fname, lineno );
1225                 return 1;
1226         }
1227
1228         if ( dnPrettyNormal( NULL, &bvnc, &pvnc, &nvnc, NULL ) != LDAP_SUCCESS ) {
1229                 fprintf( stderr, "%s: line %d: suffix DN %s is invalid\n",
1230                         fname, lineno, bvnc.bv_val );
1231                 return 1;
1232         }
1233
1234         ber_str2bv( argv[ massaged ], 0, 0, &brnc );
1235         if ( dnPrettyNormal( NULL, &brnc, &prnc, &nrnc, NULL ) != LDAP_SUCCESS ) {
1236                 fprintf( stderr, "%s: line %d: suffix DN %s is invalid\n",
1237                                 fname, lineno, brnc.bv_val );
1238                 free( nvnc.bv_val );
1239                 free( pvnc.bv_val );
1240                 return 1;
1241         }
1242
1243 #ifdef ENABLE_REWRITE
1244         /*
1245          * The suffix massaging is emulated
1246          * by means of the rewrite capabilities
1247          */
1248         rc = rwm_suffix_massage_config( rwmap->rwm_rw,
1249                         &pvnc, &nvnc, &prnc, &nrnc );
1250         free( nvnc.bv_val );
1251         free( pvnc.bv_val );
1252         free( nrnc.bv_val );
1253         free( prnc.bv_val );
1254
1255         return( rc );
1256
1257 #else /* !ENABLE_REWRITE */
1258         ber_bvarray_add( &rwmap->rwm_suffix_massage, &pvnc );
1259         ber_bvarray_add( &rwmap->rwm_suffix_massage, &nvnc );
1260
1261         ber_bvarray_add( &rwmap->rwm_suffix_massage, &prnc );
1262         ber_bvarray_add( &rwmap->rwm_suffix_massage, &nrnc );
1263 #endif /* !ENABLE_REWRITE */
1264
1265         return 0;
1266 }
1267
1268 static int
1269 rwm_m_config(
1270     BackendDB   *be,
1271     const char  *fname,
1272     int         lineno,
1273     int         argc,
1274     char        **argv
1275 )
1276 {
1277         slap_overinst           *on = (slap_overinst *) be->bd_info;
1278         struct ldaprwmap        *rwmap =
1279                         (struct ldaprwmap *)on->on_bi.bi_private;
1280
1281         /* objectclass/attribute mapping */
1282         return rwm_map_config( &rwmap->rwm_oc,
1283                         &rwmap->rwm_at,
1284                         fname, lineno, argc, argv );
1285 }
1286
1287 static int
1288 rwm_response( Operation *op, SlapReply *rs )
1289 {
1290         slap_overinst           *on = (slap_overinst *)op->o_bd->bd_info;
1291         struct ldaprwmap        *rwmap =
1292                         (struct ldaprwmap *)on->on_bi.bi_private;
1293
1294         int             rc;
1295
1296         if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH ) {
1297                 return rwm_send_entry( op, rs );
1298         }
1299
1300         switch( op->o_tag ) {
1301         case LDAP_REQ_SEARCH:
1302                 /* Note: the operation attrs are remapped */
1303                 if ( rs->sr_type == REP_RESULT
1304                                 && op->ors_attrs != NULL
1305                                 && op->ors_attrs != rs->sr_attrs )
1306                 {
1307                         ch_free( op->ors_attrs );
1308                         op->ors_attrs = rs->sr_attrs;
1309                 }
1310                 /* fall thru */
1311
1312         case LDAP_REQ_BIND:
1313         case LDAP_REQ_ADD:
1314         case LDAP_REQ_DELETE:
1315         case LDAP_REQ_MODRDN:
1316         case LDAP_REQ_MODIFY:
1317         case LDAP_REQ_COMPARE:
1318         case LDAP_REQ_EXTENDED:
1319                 if ( rs->sr_ref ) {
1320                         dncookie                dc;
1321
1322                         /*
1323                          * Rewrite the dn of the referrals, if needed
1324                          */
1325                         dc.rwmap = rwmap;
1326 #ifdef ENABLE_REWRITE
1327                         dc.conn = op->o_conn;
1328                         dc.rs = NULL;
1329                         dc.ctx = "referralDN";
1330 #else /* ! ENABLE_REWRITE */
1331                         dc.tofrom = 0;
1332                         dc.normalized = 0;
1333 #endif /* ! ENABLE_REWRITE */
1334                         rc = rwm_referral_result_rewrite( &dc, rs->sr_ref );
1335                         if ( rc != LDAP_SUCCESS ) {
1336                                 rc = 1;
1337                                 break;
1338                         }
1339                 }
1340                 rc = rwm_matched( op, rs );
1341                 break;
1342
1343         default:
1344                 rc = SLAP_CB_CONTINUE;
1345                 break;
1346         }
1347
1348         return rc;
1349 }
1350
1351 static int
1352 rwm_db_config(
1353     BackendDB   *be,
1354     const char  *fname,
1355     int         lineno,
1356     int         argc,
1357     char        **argv
1358 )
1359 {
1360         slap_overinst           *on = (slap_overinst *) be->bd_info;
1361         struct ldaprwmap        *rwmap =
1362                         (struct ldaprwmap *)on->on_bi.bi_private;
1363
1364         int             rc = 0;
1365         char            *argv0 = NULL;
1366
1367         if ( strncasecmp( argv[ 0 ], "rwm-", STRLENOF( "rwm-" ) ) == 0 ) {
1368                 argv0 = argv[ 0 ];
1369                 argv[ 0 ] = &argv0[ STRLENOF( "rwm-" ) ];
1370         }
1371
1372         if ( strncasecmp( argv[0], "rewrite", STRLENOF("rewrite") ) == 0 ) {
1373                 rc = rwm_rw_config( be, fname, lineno, argc, argv );
1374
1375         } else if ( strcasecmp( argv[0], "map" ) == 0 ) {
1376                 rc = rwm_m_config( be, fname, lineno, argc, argv );
1377
1378         } else if ( strcasecmp( argv[0], "suffixmassage" ) == 0 ) {
1379                 rc = rwm_suffixmassage_config( be, fname, lineno, argc, argv );
1380
1381         } else if ( strcasecmp( argv[0], "t-f-support" ) == 0 ) {
1382                 if ( argc != 2 ) {
1383                         fprintf( stderr,
1384                 "%s: line %d: \"t-f-support {no|yes|discover}\" needs 1 argument.\n",
1385                                         fname, lineno );
1386                         return( 1 );
1387                 }
1388
1389                 if ( strcasecmp( argv[ 1 ], "no" ) == 0 ) {
1390                         rwmap->rwm_flags &= ~(RWM_F_SUPPORT_T_F|RWM_F_SUPPORT_T_F_DISCOVER);
1391
1392                 } else if ( strcasecmp( argv[ 1 ], "yes" ) == 0 ) {
1393                         rwmap->rwm_flags |= RWM_F_SUPPORT_T_F;
1394
1395 #if 0
1396                 /* TODO: not implemented yet */
1397                 } else if ( strcasecmp( argv[ 1 ], "discover" ) == 0 ) {
1398                         rwmap->rwm_flags |= RWM_F_SUPPORT_T_F_DISCOVER;
1399 #endif
1400
1401                 } else {
1402                         fprintf( stderr,
1403         "%s: line %d: unknown value \"%s\" for \"t-f-support {no|yes|discover}\".\n",
1404                                 fname, lineno, argv[ 1 ] );
1405                         return 1;
1406                 }
1407
1408         } else {
1409                 rc = SLAP_CONF_UNKNOWN;
1410         }
1411
1412         if ( argv0 ) {
1413                 argv[ 0 ] = argv0;
1414         }
1415
1416         return rc;
1417 }
1418
1419 static int
1420 rwm_db_init(
1421         BackendDB *be
1422 )
1423 {
1424         slap_overinst           *on = (slap_overinst *) be->bd_info;
1425         struct ldapmapping      *mapping = NULL;
1426         struct ldaprwmap        *rwmap;
1427 #ifdef ENABLE_REWRITE
1428         char                    *rargv[ 3 ];
1429 #endif /* ENABLE_REWRITE */
1430
1431         rwmap = (struct ldaprwmap *)ch_calloc( 1, sizeof( struct ldaprwmap ) );
1432
1433 #ifdef ENABLE_REWRITE
1434         rwmap->rwm_rw = rewrite_info_init( REWRITE_MODE_USE_DEFAULT );
1435         if ( rwmap->rwm_rw == NULL ) {
1436                 ch_free( rwmap );
1437                 return -1;
1438         }
1439
1440         /* this rewriteContext by default must be null;
1441          * rules can be added if required */
1442         rargv[ 0 ] = "rewriteContext";
1443         rargv[ 1 ] = "searchFilter";
1444         rargv[ 2 ] = NULL;
1445         rewrite_parse( rwmap->rwm_rw, "<suffix massage>", 1, 2, rargv );
1446
1447         rargv[ 0 ] = "rewriteContext";
1448         rargv[ 1 ] = "default";
1449         rargv[ 2 ] = NULL;
1450         rewrite_parse( rwmap->rwm_rw, "<suffix massage>", 2, 2, rargv );
1451 #endif /* ENABLE_REWRITE */
1452
1453         if ( rwm_map_init( &rwmap->rwm_oc, &mapping ) != LDAP_SUCCESS ||
1454                         rwm_map_init( &rwmap->rwm_at, &mapping ) != LDAP_SUCCESS )
1455         {
1456                 return 1;
1457         }
1458
1459         on->on_bi.bi_private = (void *)rwmap;
1460
1461         return 0;
1462 }
1463
1464 static int
1465 rwm_db_destroy(
1466         BackendDB *be
1467 )
1468 {
1469         slap_overinst   *on = (slap_overinst *) be->bd_info;
1470         int             rc = 0;
1471
1472         if ( on->on_bi.bi_private ) {
1473                 struct ldaprwmap        *rwmap =
1474                         (struct ldaprwmap *)on->on_bi.bi_private;
1475
1476 #ifdef ENABLE_REWRITE
1477                 if (rwmap->rwm_rw) {
1478                         rewrite_info_delete( &rwmap->rwm_rw );
1479                 }
1480 #else /* !ENABLE_REWRITE */
1481                 if ( rwmap->rwm_suffix_massage ) {
1482                         ber_bvarray_free( rwmap->rwm_suffix_massage );
1483                 }
1484 #endif /* !ENABLE_REWRITE */
1485
1486                 avl_free( rwmap->rwm_oc.remap, NULL );
1487                 avl_free( rwmap->rwm_oc.map, rwm_mapping_free );
1488                 avl_free( rwmap->rwm_at.remap, NULL );
1489                 avl_free( rwmap->rwm_at.map, rwm_mapping_free );
1490
1491                 ch_free( rwmap );
1492         }
1493
1494         return rc;
1495 }
1496
1497 static slap_overinst rwm = { { NULL } };
1498
1499 int
1500 rwm_init(void)
1501 {
1502         memset( &rwm, 0, sizeof( slap_overinst ) );
1503
1504         rwm.on_bi.bi_type = "rwm";
1505
1506         rwm.on_bi.bi_db_init = rwm_db_init;
1507         rwm.on_bi.bi_db_config = rwm_db_config;
1508         rwm.on_bi.bi_db_destroy = rwm_db_destroy;
1509
1510         rwm.on_bi.bi_op_bind = rwm_op_bind;
1511         rwm.on_bi.bi_op_search = rwm_op_search;
1512         rwm.on_bi.bi_op_compare = rwm_op_compare;
1513         rwm.on_bi.bi_op_modify = rwm_op_modify;
1514         rwm.on_bi.bi_op_modrdn = rwm_op_modrdn;
1515         rwm.on_bi.bi_op_add = rwm_op_add;
1516         rwm.on_bi.bi_op_delete = rwm_op_delete;
1517         rwm.on_bi.bi_op_unbind = rwm_op_unbind;
1518         rwm.on_bi.bi_extended = rwm_extended;
1519
1520         rwm.on_bi.bi_operational = rwm_operational;
1521         rwm.on_bi.bi_chk_referrals = 0 /* rwm_chk_referrals */ ;
1522
1523 #ifdef ENABLE_REWRITE
1524         rwm.on_bi.bi_connection_init = rwm_conn_init;
1525         rwm.on_bi.bi_connection_destroy = rwm_conn_destroy;
1526 #endif /* ENABLE_REWRITE */
1527
1528         rwm.on_response = rwm_response;
1529
1530         return overlay_register( &rwm );
1531 }
1532
1533 #if SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC
1534 int
1535 init_module( int argc, char *argv[] )
1536 {
1537         return rwm_init();
1538 }
1539 #endif /* SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC */
1540
1541 #endif /* SLAPD_OVER_RWM */