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