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 = rewrite_session_var_set( rwmap->rwm_rw, op->o_conn,
 673                 "searchFilter", op->ors_filterstr.bv_val );
 674         if ( rc == LDAP_SUCCESS )
 675                 rc = rwm_op_dn_massage( op, rs, "searchDN" );
 676 #else /* ! ENABLE_REWRITE */
 677         rc = 1;
 678         rc = rwm_op_dn_massage( op, rs, &rc );
 679 #endif /* ! ENABLE_REWRITE */
 680         if ( rc != LDAP_SUCCESS ) {
 681                 text = "searchDN massage error";
 682                 goto error_return;
 683         }
 684
 685         /*
 686          * Rewrite the dn if needed
 687          */
 688         dc.rwmap = rwmap;
 689 #ifdef ENABLE_REWRITE
 690         dc.conn = op->o_conn;
 691         dc.rs = rs;
 692         dc.ctx = "searchFilterAttrDN";
 693 #else /* ! ENABLE_REWRITE */
 694         dc.tofrom = 0;
 695         dc.normalized = 0;
 696 #endif /* ! ENABLE_REWRITE */
 697
 698         rc = rwm_filter_map_rewrite( op, &dc, op->ors_filter, &fstr );
 699         if ( rc != LDAP_SUCCESS ) {
 700                 text = "searchFilter/searchFilterAttrDN massage error";
 701                 goto error_return;
 702         }
 703
 704         f = str2filter_x( op, fstr.bv_val );
 705
 706         if ( f == NULL ) {
 707                 text = "massaged filter parse error";
 708                 goto error_return;
 709         }
 710
 711         if ( !BER_BVISNULL( &op->ors_filterstr ) ) {
 712                 ch_free( op->ors_filterstr.bv_val );
 713         }
 714
 715         if( op->ors_filter ) {
 716                 filter_free_x( op, op->ors_filter );
 717         }
 718
 719         op->ors_filter = f;
 720         op->ors_filterstr = fstr;
 721
 722         rc = rwm_map_attrnames( &rwmap->rwm_at, &rwmap->rwm_oc,
 723                         op->ors_attrs, &an, RWM_MAP );
 724         if ( rc != LDAP_SUCCESS ) {
 725                 text = "attribute list mapping error";
 726                 goto error_return;
 727         }
 728
 729         cb = rwm_callback_get( op );
 730
 731         cb->sc_response = rwm_swap_attrs;
 732         cb->sc_cleanup = NULL;
 733         cb->sc_private = (void *)op->ors_attrs;
 734         cb->sc_next = op->o_callback;
 735
 736         op->o_callback = cb;
 737         op->ors_attrs = an;
 738
 739         return SLAP_CB_CONTINUE;
 740
 741 error_return:;
 742         if ( an != NULL ) {
 743                 ch_free( an );
 744         }
 745
 746         if ( f != NULL ) {
 747                 filter_free_x( op, f );
 748         }
 749
 750         if ( !BER_BVISNULL( &fstr ) ) {
 751                 ch_free( fstr.bv_val );
 752         }
 753
 754         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 755         send_ldap_error( op, rs, rc, text );
 756
 757         return -1;
 758
 759 }
 760
 761 static int
 762 rwm_extended( Operation *op, SlapReply *rs )
 763 {
 764         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 765         int                     rc;
 766
 767 #ifdef ENABLE_REWRITE
 768         rc = rwm_op_dn_massage( op, rs, "extendedDN" );
 769 #else /* ! ENABLE_REWRITE */
 770         rc = 1;
 771         rc = rwm_op_dn_massage( op, rs, &rc );
 772 #endif /* ! ENABLE_REWRITE */
 773         if ( rc != LDAP_SUCCESS ) {
 774                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 775                 send_ldap_error( op, rs, rc, "extendedDN massage error" );
 776                 return -1;
 777         }
 778
 779         /* TODO: rewrite/map extended data ? ... */
 780         return SLAP_CB_CONTINUE;
 781 }
 782
 783 static int
 784 rwm_matched( Operation *op, SlapReply *rs )
 785 {
 786         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 787         struct ldaprwmap        *rwmap =
 788                         (struct ldaprwmap *)on->on_bi.bi_private;
 789
 790         struct berval           dn, mdn;
 791         dncookie                dc;
 792         int                     rc;
 793
 794         if ( rs->sr_matched == NULL ) {
 795                 return SLAP_CB_CONTINUE;
 796         }
 797
 798         dc.rwmap = rwmap;
 799 #ifdef ENABLE_REWRITE
 800         dc.conn = op->o_conn;
 801         dc.rs = rs;
 802         dc.ctx = "matchedDN";
 803 #else /* ! ENABLE_REWRITE */
 804         dc.tofrom = 0;
 805         dc.normalized = 0;
 806 #endif /* ! ENABLE_REWRITE */
 807         ber_str2bv( rs->sr_matched, 0, 0, &dn );
 808         mdn = dn;
 809         rc = rwm_dn_massage_pretty( &dc, &dn, &mdn );
 810         if ( rc != LDAP_SUCCESS ) {
 811                 rs->sr_err = rc;
 812                 rs->sr_text = "Rewrite error";
 813                 return 1;
 814         }
 815
 816         if ( mdn.bv_val != dn.bv_val ) {
 817                 if ( rs->sr_flags & REP_MATCHED_MUSTBEFREED ) {
 818                         ch_free( (void *)rs->sr_matched );
 819
 820                 } else {
 821                         rs->sr_flags |= REP_MATCHED_MUSTBEFREED;
 822                 }
 823                 rs->sr_matched = mdn.bv_val;
 824         }
 825
 826         return SLAP_CB_CONTINUE;
 827 }
 828
 829 static int
 830 rwm_attrs( Operation *op, SlapReply *rs, Attribute** a_first, int stripEntryDN )
 831 {
 832         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 833         struct ldaprwmap        *rwmap =
 834                         (struct ldaprwmap *)on->on_bi.bi_private;
 835
 836         dncookie                dc;
 837         int                     rc;
 838         Attribute               **ap;
 839         int                     isupdate;
 840
 841         /*
 842          * Rewrite the dn attrs, if needed
 843          */
 844         dc.rwmap = rwmap;
 845 #ifdef ENABLE_REWRITE
 846         dc.conn = op->o_conn;
 847         dc.rs = NULL;
 848 #else /* ! ENABLE_REWRITE */
 849         dc.tofrom = 0;
 850         dc.normalized = 0;
 851 #endif /* ! ENABLE_REWRITE */
 852
 853         /* FIXME: the entries are in the remote mapping form;
 854          * so we need to select those attributes we are willing
 855          * to return, and remap them accordingly */
 856
 857         /* FIXME: in principle, one could map an attribute
 858          * on top of another, which already exists.
 859          * As such, in the end there might exist more than
 860          * one instance of an attribute.
 861          * We should at least check if this occurs, and issue
 862          * an error (because multiple instances of attrs in
 863          * response are not valid), or merge the values (what
 864          * about duplicate values?) */
 865         isupdate = be_shadow_update( op );
 866         for ( ap = a_first; *ap; ) {
 867                 struct ldapmapping      *mapping = NULL;
 868                 int                     drop_missing;
 869                 int                     last;
 870                 Attribute               *a;
 871
 872                 if ( SLAP_OPATTRS( rs->sr_attr_flags ) && is_at_operational( (*ap)->a_desc->ad_type ) )
 873                 {
 874                         /* go on */ ;
 875
 876                 } else {
 877                         if ( op->ors_attrs != NULL &&
 878                                         !SLAP_USERATTRS( rs->sr_attr_flags ) &&
 879                                         !ad_inlist( (*ap)->a_desc, op->ors_attrs ) )
 880                         {
 881                                 goto cleanup_attr;
 882                         }
 883
 884                         drop_missing = rwm_mapping( &rwmap->rwm_at,
 885                                         &(*ap)->a_desc->ad_cname, &mapping, RWM_REMAP );
 886                         if ( drop_missing || ( mapping != NULL && BER_BVISEMPTY( &mapping->m_dst ) ) )
 887                         {
 888                                 goto cleanup_attr;
 889                         }
 890
 891                         if ( mapping != NULL ) {
 892                                 (*ap)->a_desc = mapping->m_dst_ad;
 893                         }
 894                 }
 895
 896                 if ( (*ap)->a_desc == slap_schema.si_ad_entryDN ) {
 897                         if ( stripEntryDN ) {
 898                                 /* will be generated by frontend */
 899                                 goto cleanup_attr;
 900                         }
 901
 902                 } else if ( !isupdate
 903                         && !get_manageDIT( op )
 904                         && (*ap)->a_desc->ad_type->sat_no_user_mod
 905                         && (*ap)->a_desc->ad_type != slap_schema.si_at_undefined )
 906                 {
 907                         goto next_attr;
 908                 }
 909
 910                 for ( last = 0; !BER_BVISNULL( &(*ap)->a_vals[last] ); last++ )
 911                         /* just count */ ;
 912
 913                 if ( last == 0 ) {
 914                         /* empty? leave it in place because of attrsonly and vlv */
 915                         goto next_attr;
 916                 }
 917                 last--;
 918
 919                 if ( (*ap)->a_desc == slap_schema.si_ad_objectClass
 920                                 || (*ap)->a_desc == slap_schema.si_ad_structuralObjectClass )
 921                 {
 922                         struct berval   *bv;
 923
 924                         for ( bv = (*ap)->a_vals; !BER_BVISNULL( bv ); bv++ ) {
 925                                 struct berval   mapped;
 926
 927                                 rwm_map( &rwmap->rwm_oc, &bv[0], &mapped, RWM_REMAP );
 928                                 if ( BER_BVISNULL( &mapped ) || BER_BVISEMPTY( &mapped ) ) {
 929                                         ch_free( bv[0].bv_val );
 930                                         BER_BVZERO( &bv[0] );
 931                                         if ( &(*ap)->a_vals[last] > &bv[0] ) {
 932                                                 bv[0] = (*ap)->a_vals[last];
 933                                                 BER_BVZERO( &(*ap)->a_vals[last] );
 934                                         }
 935                                         last--;
 936                                         bv--;
 937
 938                                 } else if ( mapped.bv_val != bv[0].bv_val ) {
 939                                         /*
 940                                          * FIXME: after LBER_FREEing
 941                                          * the value is replaced by
 942                                          * ch_alloc'ed memory
 943                                          */
 944                                         ber_bvreplace( &bv[0], &mapped );
 945                                 }
 946                         }
 947
 948                 /*
 949                  * It is necessary to try to rewrite attributes with
 950                  * dn syntax because they might be used in ACLs as
 951                  * members of groups; since ACLs are applied to the
 952                  * rewritten stuff, no dn-based subject clause could
 953                  * be used at the ldap backend side (see
 954                  * http://www.OpenLDAP.org/faq/data/cache/452.html)
 955                  * The problem can be overcome by moving the dn-based
 956                  * ACLs to the target directory server, and letting
 957                  * everything pass thru the ldap backend. */
 958                 /* FIXME: handle distinguishedName-like syntaxes, like
 959                  * nameAndOptionalUID */
 960                 } else if ( (*ap)->a_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 961                                 || ( mapping != NULL && mapping->m_src_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 962                 {
 963 #ifdef ENABLE_REWRITE
 964                         dc.ctx = "searchAttrDN";
 965 #endif /* ENABLE_REWRITE */
 966                         rc = rwm_dnattr_result_rewrite( &dc, (*ap)->a_vals );
 967                         if ( rc != LDAP_SUCCESS ) {
 968                                 goto cleanup_attr;
 969                         }
 970
 971                 } else if ( (*ap)->a_desc == slap_schema.si_ad_ref ) {
 972 #ifdef ENABLE_REWRITE
 973                         dc.ctx = "searchAttrDN";
 974 #endif /* ENABLE_REWRITE */
 975                         rc = rwm_referral_result_rewrite( &dc, (*ap)->a_vals );
 976                         if ( rc != LDAP_SUCCESS ) {
 977                                 goto cleanup_attr;
 978                         }
 979                 }
 980
 981                 if ( mapping != NULL ) {
 982                         /* rewrite the attribute description */
 983                         assert( mapping->m_dst_ad != NULL );
 984                         (*ap)->a_desc = mapping->m_dst_ad;
 985                 }
 986
 987 next_attr:;
 988                 ap = &(*ap)->a_next;
 989                 continue;
 990
 991 cleanup_attr:;
 992                 a = *ap;
 993                 *ap = (*ap)->a_next;
 994
 995                 attr_free( a );
 996         }
 997
 998         return 0;
 999 }
1000
1001 static int
1002 rwm_send_entry( Operation *op, SlapReply *rs )
1003 {
1004         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
1005         struct ldaprwmap        *rwmap =
1006                         (struct ldaprwmap *)on->on_bi.bi_private;
1007
1008         Entry                   *e = NULL;
1009         slap_mask_t             flags;
1010         struct berval           dn = BER_BVNULL,
1011                                 ndn = BER_BVNULL;
1012         dncookie                dc;
1013         int                     rc;
1014
1015         assert( rs->sr_entry != NULL );
1016
1017         /*
1018          * Rewrite the dn of the result, if needed
1019          */
1020         dc.rwmap = rwmap;
1021 #ifdef ENABLE_REWRITE
1022         dc.conn = op->o_conn;
1023         dc.rs = NULL;
1024         dc.ctx = "searchEntryDN";
1025 #else /* ! ENABLE_REWRITE */
1026         dc.tofrom = 0;
1027         dc.normalized = 0;
1028 #endif /* ! ENABLE_REWRITE */
1029
1030         e = rs->sr_entry;
1031         flags = rs->sr_flags;
1032         if ( !( rs->sr_flags & REP_ENTRY_MODIFIABLE ) ) {
1033                 /* FIXME: all we need to duplicate are:
1034                  * - dn
1035                  * - ndn
1036                  * - attributes that are requested
1037                  * - no values if attrsonly is set
1038                  */
1039
1040                 e = entry_dup( e );
1041                 if ( e == NULL ) {
1042                         rc = LDAP_NO_MEMORY;
1043                         goto fail;
1044                 }
1045
1046                 flags |= ( REP_ENTRY_MODIFIABLE | REP_ENTRY_MUSTBEFREED );
1047         }
1048
1049         /*
1050          * Note: this may fail if the target host(s) schema differs
1051          * from the one known to the meta, and a DN with unknown
1052          * attributes is returned.
1053          */
1054         dn = e->e_name;
1055         ndn = e->e_nname;
1056         rc = rwm_dn_massage_pretty_normalize( &dc, &e->e_name, &dn, &ndn );
1057         if ( rc != LDAP_SUCCESS ) {
1058                 rc = 1;
1059                 goto fail;
1060         }
1061
1062         if ( e->e_name.bv_val != dn.bv_val ) {
1063                 ch_free( e->e_name.bv_val );
1064                 ch_free( e->e_nname.bv_val );
1065
1066                 e->e_name = dn;
1067                 e->e_nname = ndn;
1068         }
1069
1070         /* TODO: map entry attribute types, objectclasses
1071          * and dn-valued attribute values */
1072
1073         /* FIXME: the entries are in the remote mapping form;
1074          * so we need to select those attributes we are willing
1075          * to return, and remap them accordingly */
1076         (void)rwm_attrs( op, rs, &e->e_attrs, 1 );
1077
1078 #if 0
1079         if ( rs->sr_operational_attrs ) {
1080                 (void)rwm_attrs( op, rs, &rs->sr_operational_attrs, 0 );
1081         }
1082 #endif
1083
1084         rs->sr_entry = e;
1085         rs->sr_flags = flags;
1086
1087         return SLAP_CB_CONTINUE;
1088
1089 fail:;
1090         if ( e != NULL && e != rs->sr_entry ) {
1091                 if ( e->e_name.bv_val == dn.bv_val ) {
1092                         BER_BVZERO( &e->e_name );
1093                 }
1094
1095                 if ( e->e_nname.bv_val == ndn.bv_val ) {
1096                         BER_BVZERO( &e->e_nname );
1097                 }
1098
1099                 entry_free( e );
1100         }
1101
1102         if ( !BER_BVISNULL( &dn ) ) {
1103                 ch_free( dn.bv_val );
1104         }
1105
1106         if ( !BER_BVISNULL( &ndn ) ) {
1107                 ch_free( ndn.bv_val );
1108         }
1109
1110         return rc;
1111 }
1112
1113 static int
1114 rwm_operational( Operation *op, SlapReply *rs )
1115 {
1116         /* FIXME: the entries are in the remote mapping form;
1117          * so we need to select those attributes we are willing
1118          * to return, and remap them accordingly */
1119         if ( rs->sr_operational_attrs ) {
1120                 rwm_attrs( op, rs, &rs->sr_operational_attrs, 1 );
1121         }
1122
1123         return SLAP_CB_CONTINUE;
1124 }
1125
1126 #if 0
1127 /* don't use this; it cannot be reverted, and leaves op->o_req_dn
1128  * rewritten for subsequent operations; fine for plain suffixmassage,
1129  * but destroys everything else */
1130 static int
1131 rwm_chk_referrals( Operation *op, SlapReply *rs )
1132 {
1133         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
1134         int                     rc;
1135
1136 #ifdef ENABLE_REWRITE
1137         rc = rwm_op_dn_massage( op, rs, "referralCheckDN" );
1138 #else /* ! ENABLE_REWRITE */
1139         rc = 1;
1140         rc = rwm_op_dn_massage( op, rs, &rc );
1141 #endif /* ! ENABLE_REWRITE */
1142         if ( rc != LDAP_SUCCESS ) {
1143                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1144                 send_ldap_error( op, rs, rc, "referralCheckDN massage error" );
1145                 return -1;
1146         }
1147
1148         return SLAP_CB_CONTINUE;
1149 }
1150 #endif
1151
1152 static int
1153 rwm_rw_config(
1154     BackendDB   *be,
1155     const char  *fname,
1156     int         lineno,
1157     int         argc,
1158     char        **argv
1159 )
1160 {
1161 #ifdef ENABLE_REWRITE
1162         slap_overinst           *on = (slap_overinst *) be->bd_info;
1163         struct ldaprwmap        *rwmap =
1164                         (struct ldaprwmap *)on->on_bi.bi_private;
1165
1166         return rewrite_parse( rwmap->rwm_rw,
1167                                 fname, lineno, argc, argv );
1168
1169 #else /* !ENABLE_REWRITE */
1170         fprintf( stderr, "%s: line %d: rewrite capabilities "
1171                         "are not enabled\n", fname, lineno );
1172 #endif /* !ENABLE_REWRITE */
1173
1174         return 0;
1175 }
1176
1177 static int
1178 rwm_suffixmassage_config(
1179     BackendDB   *be,
1180     const char  *fname,
1181     int         lineno,
1182     int         argc,
1183     char        **argv
1184 )
1185 {
1186         slap_overinst           *on = (slap_overinst *) be->bd_info;
1187         struct ldaprwmap        *rwmap =
1188                         (struct ldaprwmap *)on->on_bi.bi_private;
1189
1190         struct berval           bvnc, nvnc, pvnc, brnc, nrnc, prnc;
1191         int                     massaged;
1192 #ifdef ENABLE_REWRITE
1193         int                     rc;
1194 #endif /* ENABLE_REWRITE */
1195
1196         /*
1197          * syntax:
1198          *
1199          *      suffixmassage [<suffix>] <massaged suffix>
1200          *
1201          * the [<suffix>] field must be defined as a valid suffix
1202          * for the current database;
1203          * the <massaged suffix> shouldn't have already been
1204          * defined as a valid suffix for the current server
1205          */
1206         if ( argc == 2 ) {
1207                 if ( be->be_suffix == NULL ) {
1208                         fprintf( stderr, "%s: line %d: "
1209                                        " \"suffixMassage [<suffix>]"
1210                                        " <massaged suffix>\" without "
1211                                        "<suffix> part requires database "
1212                                        "suffix be defined first.\n",
1213                                 fname, lineno );
1214                         return 1;
1215                 }
1216                 bvnc = be->be_suffix[ 0 ];
1217                 massaged = 1;
1218
1219         } else if ( argc == 3 ) {
1220                 ber_str2bv( argv[ 1 ], 0, 0, &bvnc );
1221                 massaged = 2;
1222
1223         } else  {
1224                 fprintf( stderr, "%s: line %d: syntax is"
1225                                " \"suffixMassage [<suffix>]"
1226                                " <massaged suffix>\"\n",
1227                         fname, lineno );
1228                 return 1;
1229         }
1230
1231         if ( dnPrettyNormal( NULL, &bvnc, &pvnc, &nvnc, NULL ) != LDAP_SUCCESS ) {
1232                 fprintf( stderr, "%s: line %d: suffix DN %s is invalid\n",
1233                         fname, lineno, bvnc.bv_val );
1234                 return 1;
1235         }
1236
1237         ber_str2bv( argv[ massaged ], 0, 0, &brnc );
1238         if ( dnPrettyNormal( NULL, &brnc, &prnc, &nrnc, NULL ) != LDAP_SUCCESS ) {
1239                 fprintf( stderr, "%s: line %d: suffix DN %s is invalid\n",
1240                                 fname, lineno, brnc.bv_val );
1241                 free( nvnc.bv_val );
1242                 free( pvnc.bv_val );
1243                 return 1;
1244         }
1245
1246 #ifdef ENABLE_REWRITE
1247         /*
1248          * The suffix massaging is emulated
1249          * by means of the rewrite capabilities
1250          */
1251         rc = rwm_suffix_massage_config( rwmap->rwm_rw,
1252                         &pvnc, &nvnc, &prnc, &nrnc );
1253         free( nvnc.bv_val );
1254         free( pvnc.bv_val );
1255         free( nrnc.bv_val );
1256         free( prnc.bv_val );
1257
1258         return( rc );
1259
1260 #else /* !ENABLE_REWRITE */
1261         ber_bvarray_add( &rwmap->rwm_suffix_massage, &pvnc );
1262         ber_bvarray_add( &rwmap->rwm_suffix_massage, &nvnc );
1263
1264         ber_bvarray_add( &rwmap->rwm_suffix_massage, &prnc );
1265         ber_bvarray_add( &rwmap->rwm_suffix_massage, &nrnc );
1266 #endif /* !ENABLE_REWRITE */
1267
1268         return 0;
1269 }
1270
1271 static int
1272 rwm_m_config(
1273     BackendDB   *be,
1274     const char  *fname,
1275     int         lineno,
1276     int         argc,
1277     char        **argv
1278 )
1279 {
1280         slap_overinst           *on = (slap_overinst *) be->bd_info;
1281         struct ldaprwmap        *rwmap =
1282                         (struct ldaprwmap *)on->on_bi.bi_private;
1283
1284         /* objectclass/attribute mapping */
1285         return rwm_map_config( &rwmap->rwm_oc,
1286                         &rwmap->rwm_at,
1287                         fname, lineno, argc, argv );
1288 }
1289
1290 static int
1291 rwm_response( Operation *op, SlapReply *rs )
1292 {
1293         slap_overinst           *on = (slap_overinst *)op->o_bd->bd_info;
1294         struct ldaprwmap        *rwmap =
1295                         (struct ldaprwmap *)on->on_bi.bi_private;
1296
1297         int             rc;
1298
1299         if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH ) {
1300                 return rwm_send_entry( op, rs );
1301         }
1302
1303         switch( op->o_tag ) {
1304         case LDAP_REQ_SEARCH:
1305                 /* Note: the operation attrs are remapped */
1306                 if ( rs->sr_type == REP_RESULT
1307                                 && op->ors_attrs != NULL
1308                                 && op->ors_attrs != rs->sr_attrs )
1309                 {
1310                         ch_free( op->ors_attrs );
1311                         op->ors_attrs = rs->sr_attrs;
1312                 }
1313                 /* fall thru */
1314
1315         case LDAP_REQ_BIND:
1316         case LDAP_REQ_ADD:
1317         case LDAP_REQ_DELETE:
1318         case LDAP_REQ_MODRDN:
1319         case LDAP_REQ_MODIFY:
1320         case LDAP_REQ_COMPARE:
1321         case LDAP_REQ_EXTENDED:
1322                 if ( rs->sr_ref ) {
1323                         dncookie                dc;
1324
1325                         /*
1326                          * Rewrite the dn of the referrals, if needed
1327                          */
1328                         dc.rwmap = rwmap;
1329 #ifdef ENABLE_REWRITE
1330                         dc.conn = op->o_conn;
1331                         dc.rs = NULL;
1332                         dc.ctx = "referralDN";
1333 #else /* ! ENABLE_REWRITE */
1334                         dc.tofrom = 0;
1335                         dc.normalized = 0;
1336 #endif /* ! ENABLE_REWRITE */
1337                         rc = rwm_referral_result_rewrite( &dc, rs->sr_ref );
1338                         if ( rc != LDAP_SUCCESS ) {
1339                                 rc = 1;
1340                                 break;
1341                         }
1342                 }
1343                 rc = rwm_matched( op, rs );
1344                 break;
1345
1346         default:
1347                 rc = SLAP_CB_CONTINUE;
1348                 break;
1349         }
1350
1351         return rc;
1352 }
1353
1354 static int
1355 rwm_db_config(
1356     BackendDB   *be,
1357     const char  *fname,
1358     int         lineno,
1359     int         argc,
1360     char        **argv
1361 )
1362 {
1363         slap_overinst           *on = (slap_overinst *) be->bd_info;
1364         struct ldaprwmap        *rwmap =
1365                         (struct ldaprwmap *)on->on_bi.bi_private;
1366
1367         int             rc = 0;
1368         char            *argv0 = NULL;
1369
1370         if ( strncasecmp( argv[ 0 ], "rwm-", STRLENOF( "rwm-" ) ) == 0 ) {
1371                 argv0 = argv[ 0 ];
1372                 argv[ 0 ] = &argv0[ STRLENOF( "rwm-" ) ];
1373         }
1374
1375         if ( strncasecmp( argv[0], "rewrite", STRLENOF("rewrite") ) == 0 ) {
1376                 rc = rwm_rw_config( be, fname, lineno, argc, argv );
1377
1378         } else if ( strcasecmp( argv[0], "map" ) == 0 ) {
1379                 rc = rwm_m_config( be, fname, lineno, argc, argv );
1380
1381         } else if ( strcasecmp( argv[0], "suffixmassage" ) == 0 ) {
1382                 rc = rwm_suffixmassage_config( be, fname, lineno, argc, argv );
1383
1384         } else if ( strcasecmp( argv[0], "t-f-support" ) == 0 ) {
1385                 if ( argc != 2 ) {
1386                         fprintf( stderr,
1387                 "%s: line %d: \"t-f-support {no|yes|discover}\" needs 1 argument.\n",
1388                                         fname, lineno );
1389                         return( 1 );
1390                 }
1391
1392                 if ( strcasecmp( argv[ 1 ], "no" ) == 0 ) {
1393                         rwmap->rwm_flags &= ~(RWM_F_SUPPORT_T_F|RWM_F_SUPPORT_T_F_DISCOVER);
1394
1395                 } else if ( strcasecmp( argv[ 1 ], "yes" ) == 0 ) {
1396                         rwmap->rwm_flags |= RWM_F_SUPPORT_T_F;
1397
1398                 /* TODO: not implemented yet */
1399                 } else if ( strcasecmp( argv[ 1 ], "discover" ) == 0 ) {
1400                         fprintf( stderr,
1401                 "%s: line %d: \"discover\" not supported yet "
1402                 "in \"t-f-support {no|yes|discover}\".\n",
1403                                         fname, lineno );
1404                         return( 1 );
1405 #if 0
1406                         rwmap->rwm_flags |= RWM_F_SUPPORT_T_F_DISCOVER;
1407 #endif
1408
1409                 } else {
1410                         fprintf( stderr,
1411         "%s: line %d: unknown value \"%s\" for \"t-f-support {no|yes|discover}\".\n",
1412                                 fname, lineno, argv[ 1 ] );
1413                         return 1;
1414                 }
1415
1416         } else {
1417                 rc = SLAP_CONF_UNKNOWN;
1418         }
1419
1420         if ( argv0 ) {
1421                 argv[ 0 ] = argv0;
1422         }
1423
1424         return rc;
1425 }
1426
1427 static int
1428 rwm_db_init(
1429         BackendDB *be
1430 )
1431 {
1432         slap_overinst           *on = (slap_overinst *) be->bd_info;
1433         struct ldapmapping      *mapping = NULL;
1434         struct ldaprwmap        *rwmap;
1435 #ifdef ENABLE_REWRITE
1436         char                    *rargv[ 3 ];
1437 #endif /* ENABLE_REWRITE */
1438
1439         rwmap = (struct ldaprwmap *)ch_calloc( 1, sizeof( struct ldaprwmap ) );
1440
1441 #ifdef ENABLE_REWRITE
1442         rwmap->rwm_rw = rewrite_info_init( REWRITE_MODE_USE_DEFAULT );
1443         if ( rwmap->rwm_rw == NULL ) {
1444                 ch_free( rwmap );
1445                 return -1;
1446         }
1447
1448         /* this rewriteContext by default must be null;
1449          * rules can be added if required */
1450         rargv[ 0 ] = "rewriteContext";
1451         rargv[ 1 ] = "searchFilter";
1452         rargv[ 2 ] = NULL;
1453         rewrite_parse( rwmap->rwm_rw, "<suffix massage>", 1, 2, rargv );
1454
1455         rargv[ 0 ] = "rewriteContext";
1456         rargv[ 1 ] = "default";
1457         rargv[ 2 ] = NULL;
1458         rewrite_parse( rwmap->rwm_rw, "<suffix massage>", 2, 2, rargv );
1459 #endif /* ENABLE_REWRITE */
1460
1461         if ( rwm_map_init( &rwmap->rwm_oc, &mapping ) != LDAP_SUCCESS ||
1462                         rwm_map_init( &rwmap->rwm_at, &mapping ) != LDAP_SUCCESS )
1463         {
1464                 return 1;
1465         }
1466
1467         on->on_bi.bi_private = (void *)rwmap;
1468
1469         return 0;
1470 }
1471
1472 static int
1473 rwm_db_destroy(
1474         BackendDB *be
1475 )
1476 {
1477         slap_overinst   *on = (slap_overinst *) be->bd_info;
1478         int             rc = 0;
1479
1480         if ( on->on_bi.bi_private ) {
1481                 struct ldaprwmap        *rwmap =
1482                         (struct ldaprwmap *)on->on_bi.bi_private;
1483
1484 #ifdef ENABLE_REWRITE
1485                 if (rwmap->rwm_rw) {
1486                         rewrite_info_delete( &rwmap->rwm_rw );
1487                 }
1488 #else /* !ENABLE_REWRITE */
1489                 if ( rwmap->rwm_suffix_massage ) {
1490                         ber_bvarray_free( rwmap->rwm_suffix_massage );
1491                 }
1492 #endif /* !ENABLE_REWRITE */
1493
1494                 avl_free( rwmap->rwm_oc.remap, NULL );
1495                 avl_free( rwmap->rwm_oc.map, rwm_mapping_free );
1496                 avl_free( rwmap->rwm_at.remap, NULL );
1497                 avl_free( rwmap->rwm_at.map, rwm_mapping_free );
1498
1499                 ch_free( rwmap );
1500         }
1501
1502         return rc;
1503 }
1504
1505 static slap_overinst rwm = { { NULL } };
1506
1507 int
1508 rwm_init(void)
1509 {
1510         memset( &rwm, 0, sizeof( slap_overinst ) );
1511
1512         rwm.on_bi.bi_type = "rwm";
1513
1514         rwm.on_bi.bi_db_init = rwm_db_init;
1515         rwm.on_bi.bi_db_config = rwm_db_config;
1516         rwm.on_bi.bi_db_destroy = rwm_db_destroy;
1517
1518         rwm.on_bi.bi_op_bind = rwm_op_bind;
1519         rwm.on_bi.bi_op_search = rwm_op_search;
1520         rwm.on_bi.bi_op_compare = rwm_op_compare;
1521         rwm.on_bi.bi_op_modify = rwm_op_modify;
1522         rwm.on_bi.bi_op_modrdn = rwm_op_modrdn;
1523         rwm.on_bi.bi_op_add = rwm_op_add;
1524         rwm.on_bi.bi_op_delete = rwm_op_delete;
1525         rwm.on_bi.bi_op_unbind = rwm_op_unbind;
1526         rwm.on_bi.bi_extended = rwm_extended;
1527
1528         rwm.on_bi.bi_operational = rwm_operational;
1529         rwm.on_bi.bi_chk_referrals = 0 /* rwm_chk_referrals */ ;
1530
1531 #ifdef ENABLE_REWRITE
1532         rwm.on_bi.bi_connection_init = rwm_conn_init;
1533         rwm.on_bi.bi_connection_destroy = rwm_conn_destroy;
1534 #endif /* ENABLE_REWRITE */
1535
1536         rwm.on_response = rwm_response;
1537
1538         return overlay_register( &rwm );
1539 }
1540
1541 #if SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC
1542 int
1543 init_module( int argc, char *argv[] )
1544 {
1545         return rwm_init();
1546 }
1547 #endif /* SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC */
1548
1549 #endif /* SLAPD_OVER_RWM */