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 2003-2007 The OpenLDAP Foundation.
   6  * Portions Copyright 2003 Pierangelo Masarati.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted only as authorized by the OpenLDAP
  11  * Public License.
  12  *
  13  * A copy of this license is available in the file LICENSE in the
  14  * top-level directory of the distribution or, alternatively, at
  15  * <http://www.OpenLDAP.org/license.html>.
  16  */
  17
  18 #include "portable.h"
  19
  20 #ifdef SLAPD_OVER_RWM
  21
  22 #include <stdio.h>
  23
  24 #include <ac/string.h>
  25
  26 #include "slap.h"
  27 #include "config.h"
  28 #include "lutil.h"
  29 #include "rwm.h"
  30
  31 typedef struct rwm_op_state {
  32         ber_tag_t r_tag;
  33         struct berval ro_dn;
  34         struct berval ro_ndn;
  35         struct berval r_dn;
  36         struct berval r_ndn;
  37         AttributeName *mapped_attrs;
  38         OpRequest o_request;
  39 } rwm_op_state;
  40
  41 static int
  42 rwm_db_destroy( BackendDB *be, ConfigReply *cr );
  43
  44 typedef struct rwm_op_cb {
  45         slap_callback cb;
  46         rwm_op_state ros;
  47 } rwm_op_cb;
  48
  49 static int
  50 rwm_op_cleanup( Operation *op, SlapReply *rs )
  51 {
  52         slap_callback   *cb = op->o_callback;
  53         rwm_op_state *ros = cb->sc_private;
  54
  55         if ( rs->sr_type == REP_RESULT || rs->sr_type == REP_EXTENDED ||
  56                 op->o_abandon || rs->sr_err == SLAPD_ABANDON ) {
  57
  58                 op->o_req_dn = ros->ro_dn;
  59                 op->o_req_ndn = ros->ro_ndn;
  60
  61                 if ( !BER_BVISNULL( &ros->r_dn )
  62                         && ros->r_dn.bv_val != ros->r_ndn.bv_val )
  63                 {
  64                         ch_free( ros->r_dn.bv_val );
  65                         BER_BVZERO( &ros->r_dn );
  66                 }
  67
  68                 if ( !BER_BVISNULL( &ros->r_ndn ) ) {
  69                         ch_free( ros->r_ndn.bv_val );
  70                         BER_BVZERO( &ros->r_ndn );
  71                 }
  72
  73                 switch( ros->r_tag ) {
  74                 case LDAP_REQ_COMPARE:
  75                         if ( op->orc_ava->aa_value.bv_val != ros->orc_ava->aa_value.bv_val )
  76                                 op->o_tmpfree( op->orc_ava->aa_value.bv_val, op->o_tmpmemctx );
  77                         op->orc_ava = ros->orc_ava;
  78                         break;
  79                 case LDAP_REQ_MODIFY:
  80                         slap_mods_free( op->orm_modlist, 1 );
  81                         op->orm_modlist = ros->orm_modlist;
  82                         break;
  83                 case LDAP_REQ_MODRDN:
  84                         if ( op->orr_newSup != ros->orr_newSup ) {
  85                                 ch_free( op->orr_newSup->bv_val );
  86                                 ch_free( op->orr_nnewSup->bv_val );
  87                                 op->o_tmpfree( op->orr_newSup, op->o_tmpmemctx );
  88                                 op->o_tmpfree( op->orr_nnewSup, op->o_tmpmemctx );
  89                                 op->orr_newSup = ros->orr_newSup;
  90                                 op->orr_nnewSup = ros->orr_nnewSup;
  91                         }
  92                         break;
  93                 case LDAP_REQ_SEARCH:
  94                         ch_free( ros->mapped_attrs );
  95                         filter_free_x( op, op->ors_filter );
  96                         ch_free( op->ors_filterstr.bv_val );
  97                         op->ors_attrs = ros->ors_attrs;
  98                         op->ors_filter = ros->ors_filter;
  99                         op->ors_filterstr = ros->ors_filterstr;
 100                         break;
 101                 case LDAP_REQ_EXTENDED:
 102                         if ( op->ore_reqdata != ros->ore_reqdata ) {
 103                                 ber_bvfree( op->ore_reqdata );
 104                                 op->ore_reqdata = ros->ore_reqdata;
 105                         }
 106                         break;
 107                 default:        break;
 108                 }
 109                 op->o_callback = op->o_callback->sc_next;
 110                 op->o_tmpfree( cb, op->o_tmpmemctx );
 111         }
 112
 113         return SLAP_CB_CONTINUE;
 114 }
 115
 116 static rwm_op_cb *
 117 rwm_callback_get( Operation *op, SlapReply *rs )
 118 {
 119         rwm_op_cb       *roc = NULL;
 120
 121         roc = op->o_tmpalloc( sizeof( struct rwm_op_cb ), op->o_tmpmemctx );
 122         roc->cb.sc_cleanup = rwm_op_cleanup;
 123         roc->cb.sc_response = NULL;
 124         roc->cb.sc_next = op->o_callback;
 125         roc->cb.sc_private = &roc->ros;
 126         roc->ros.r_tag = op->o_tag;
 127         roc->ros.ro_dn = op->o_req_dn;
 128         roc->ros.ro_ndn = op->o_req_ndn;
 129         roc->ros.o_request = op->o_request;
 130         BER_BVZERO( &roc->ros.r_dn );
 131         BER_BVZERO( &roc->ros.r_ndn );
 132
 133         return roc;
 134 }
 135
 136
 137 static int
 138 rwm_op_dn_massage( Operation *op, SlapReply *rs, void *cookie,
 139         rwm_op_state *ros )
 140 {
 141         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 142         struct ldaprwmap        *rwmap =
 143                         (struct ldaprwmap *)on->on_bi.bi_private;
 144
 145         struct berval           dn = BER_BVNULL,
 146                                 ndn = BER_BVNULL;
 147         int                     rc = 0;
 148         dncookie                dc;
 149
 150         /*
 151          * Rewrite the dn if needed
 152          */
 153         dc.rwmap = rwmap;
 154         dc.conn = op->o_conn;
 155         dc.rs = rs;
 156         dc.ctx = (char *)cookie;
 157
 158         /* NOTE: in those cases where only the ndn is available,
 159          * and the caller sets op->o_req_dn = op->o_req_ndn,
 160          * only rewrite the op->o_req_ndn and use it as
 161          * op->o_req_dn as well */
 162         ndn = op->o_req_ndn;
 163         if ( op->o_req_dn.bv_val != op->o_req_ndn.bv_val ) {
 164                 dn = op->o_req_dn;
 165                 rc = rwm_dn_massage_pretty_normalize( &dc, &op->o_req_dn, &dn, &ndn );
 166         } else {
 167                 rc = rwm_dn_massage_normalize( &dc, &op->o_req_ndn, &ndn );
 168         }
 169
 170         if ( rc != LDAP_SUCCESS ) {
 171                 return rc;
 172         }
 173
 174         if ( ( op->o_req_dn.bv_val != op->o_req_ndn.bv_val && dn.bv_val == op->o_req_dn.bv_val )
 175                         || ndn.bv_val == op->o_req_ndn.bv_val )
 176         {
 177                 return LDAP_SUCCESS;
 178         }
 179
 180         if ( op->o_req_dn.bv_val != op->o_req_ndn.bv_val ) {
 181                 op->o_req_dn = dn;
 182                 ros->r_dn = dn;
 183         } else {
 184                 op->o_req_dn = ndn;
 185         }
 186         op->o_req_ndn = ndn;
 187         ros->r_ndn = ndn;
 188
 189         return LDAP_SUCCESS;
 190 }
 191
 192 static int
 193 rwm_op_add( Operation *op, SlapReply *rs )
 194 {
 195         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 196         struct ldaprwmap        *rwmap =
 197                         (struct ldaprwmap *)on->on_bi.bi_private;
 198
 199         int                     rc,
 200                                 i;
 201         Attribute               **ap = NULL;
 202         char                    *olddn = op->o_req_dn.bv_val;
 203         int                     isupdate;
 204
 205         rwm_op_cb               *roc = rwm_callback_get( op, rs );
 206
 207         rc = rwm_op_dn_massage( op, rs, "addDN", &roc->ros );
 208         if ( rc != LDAP_SUCCESS ) {
 209                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 210                 send_ldap_error( op, rs, rc, "addDN massage error" );
 211                 return -1;
 212         }
 213
 214         if ( olddn != op->o_req_dn.bv_val ) {
 215                 ber_bvreplace( &op->ora_e->e_name, &op->o_req_dn );
 216                 ber_bvreplace( &op->ora_e->e_nname, &op->o_req_ndn );
 217         }
 218
 219         /* Count number of attributes in entry */
 220         isupdate = be_shadow_update( op );
 221         for ( i = 0, ap = &op->oq_add.rs_e->e_attrs; *ap; ) {
 222                 Attribute       *a;
 223
 224                 if ( (*ap)->a_desc == slap_schema.si_ad_objectClass ||
 225                                 (*ap)->a_desc == slap_schema.si_ad_structuralObjectClass )
 226                 {
 227                         int             j, last;
 228
 229                         for ( last = 0; !BER_BVISNULL( &(*ap)->a_vals[ last ] ); last++ )
 230                                         /* count values */ ;
 231                         last--;
 232                         for ( j = 0; !BER_BVISNULL( &(*ap)->a_vals[ j ] ); j++ ) {
 233                                 struct ldapmapping      *mapping = NULL;
 234
 235                                 ( void )rwm_mapping( &rwmap->rwm_oc, &(*ap)->a_vals[ j ],
 236                                                 &mapping, RWM_MAP );
 237                                 if ( mapping == NULL ) {
 238                                         if ( rwmap->rwm_at.drop_missing ) {
 239                                                 /* FIXME: we allow to remove objectClasses as well;
 240                                                  * if the resulting entry is inconsistent, that's
 241                                                  * the relayed database's business...
 242                                                  */
 243                                                 ch_free( (*ap)->a_vals[ j ].bv_val );
 244                                                 if ( last > j ) {
 245                                                         (*ap)->a_vals[ j ] = (*ap)->a_vals[ last ];
 246                                                 }
 247                                                 BER_BVZERO( &(*ap)->a_vals[ last ] );
 248                                                 last--;
 249                                                 j--;
 250                                         }
 251
 252                                 } else {
 253                                         ch_free( (*ap)->a_vals[ j ].bv_val );
 254                                         ber_dupbv( &(*ap)->a_vals[ j ], &mapping->m_dst );
 255                                 }
 256                         }
 257
 258                 } else if ( !isupdate && !get_relax( op ) && (*ap)->a_desc->ad_type->sat_no_user_mod )
 259                 {
 260                         goto next_attr;
 261
 262                 } else {
 263                         struct ldapmapping      *mapping = NULL;
 264
 265                         ( void )rwm_mapping( &rwmap->rwm_at, &(*ap)->a_desc->ad_cname,
 266                                         &mapping, RWM_MAP );
 267                         if ( mapping == NULL ) {
 268                                 if ( rwmap->rwm_at.drop_missing ) {
 269                                         goto cleanup_attr;
 270                                 }
 271                         }
 272
 273                         if ( (*ap)->a_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 274                                         || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 275                         {
 276                                 /*
 277                                  * FIXME: rewrite could fail; in this case
 278                                  * the operation should give up, right?
 279                                  */
 280                                 rc = rwm_dnattr_rewrite( op, rs, "addAttrDN",
 281                                                 (*ap)->a_vals,
 282                                                 (*ap)->a_nvals ? &(*ap)->a_nvals : NULL );
 283                                 if ( rc ) {
 284                                         goto cleanup_attr;
 285                                 }
 286
 287                         } else if ( (*ap)->a_desc == slap_schema.si_ad_ref ) {
 288                                 rc = rwm_referral_rewrite( op, rs, "referralAttrDN",
 289                                                 (*ap)->a_vals,
 290                                                 (*ap)->a_nvals ? &(*ap)->a_nvals : NULL );
 291                                 if ( rc != LDAP_SUCCESS ) {
 292                                         goto cleanup_attr;
 293                                 }
 294                         }
 295
 296                         if ( mapping != NULL ) {
 297                                 assert( mapping->m_dst_ad != NULL );
 298                                 (*ap)->a_desc = mapping->m_dst_ad;
 299                         }
 300                 }
 301
 302 next_attr:;
 303                 ap = &(*ap)->a_next;
 304                 continue;
 305
 306 cleanup_attr:;
 307                 /* FIXME: leaking attribute/values? */
 308                 a = *ap;
 309
 310                 *ap = (*ap)->a_next;
 311                 attr_free( a );
 312         }
 313
 314         op->o_callback = &roc->cb;
 315
 316         return SLAP_CB_CONTINUE;
 317 }
 318
 319 static int
 320 rwm_conn_init( BackendDB *be, Connection *conn )
 321 {
 322         slap_overinst           *on = (slap_overinst *) be->bd_info;
 323         struct ldaprwmap        *rwmap =
 324                         (struct ldaprwmap *)on->on_bi.bi_private;
 325
 326         ( void )rewrite_session_init( rwmap->rwm_rw, conn );
 327
 328         return SLAP_CB_CONTINUE;
 329 }
 330
 331 static int
 332 rwm_conn_destroy( BackendDB *be, Connection *conn )
 333 {
 334         slap_overinst           *on = (slap_overinst *) be->bd_info;
 335         struct ldaprwmap        *rwmap =
 336                         (struct ldaprwmap *)on->on_bi.bi_private;
 337
 338         ( void )rewrite_session_delete( rwmap->rwm_rw, conn );
 339
 340         return SLAP_CB_CONTINUE;
 341 }
 342
 343 static int
 344 rwm_op_bind( Operation *op, SlapReply *rs )
 345 {
 346         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 347         int                     rc;
 348
 349         rwm_op_cb               *roc = rwm_callback_get( op, rs );
 350
 351         rc = rwm_op_dn_massage( op, rs, "bindDN", &roc->ros );
 352         if ( rc != LDAP_SUCCESS ) {
 353                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 354                 send_ldap_error( op, rs, rc, "bindDN massage error" );
 355                 return -1;
 356         }
 357
 358         op->o_callback = &roc->cb;
 359
 360         return SLAP_CB_CONTINUE;
 361 }
 362
 363 static int
 364 rwm_op_unbind( Operation *op, SlapReply *rs )
 365 {
 366         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 367         struct ldaprwmap        *rwmap =
 368                         (struct ldaprwmap *)on->on_bi.bi_private;
 369
 370         rewrite_session_delete( rwmap->rwm_rw, op->o_conn );
 371
 372         return SLAP_CB_CONTINUE;
 373 }
 374
 375 static int
 376 rwm_op_compare( Operation *op, SlapReply *rs )
 377 {
 378         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 379         struct ldaprwmap        *rwmap =
 380                         (struct ldaprwmap *)on->on_bi.bi_private;
 381
 382         int                     rc;
 383         struct berval           mapped_vals[2] = { BER_BVNULL, BER_BVNULL };
 384
 385         rwm_op_cb               *roc = rwm_callback_get( op, rs );
 386
 387         rc = rwm_op_dn_massage( op, rs, "compareDN", &roc->ros );
 388         if ( rc != LDAP_SUCCESS ) {
 389                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 390                 send_ldap_error( op, rs, rc, "compareDN massage error" );
 391                 return -1;
 392         }
 393
 394         /* if the attribute is an objectClass, try to remap its value */
 395         if ( op->orc_ava->aa_desc == slap_schema.si_ad_objectClass
 396                         || op->orc_ava->aa_desc == slap_schema.si_ad_structuralObjectClass )
 397         {
 398                 rwm_map( &rwmap->rwm_oc, &op->orc_ava->aa_value,
 399                                 &mapped_vals[0], RWM_MAP );
 400                 if ( BER_BVISNULL( &mapped_vals[0] ) || BER_BVISEMPTY( &mapped_vals[0] ) )
 401                 {
 402                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 403                         send_ldap_error( op, rs, LDAP_OTHER, "compare objectClass map error" );
 404                         return -1;
 405
 406                 } else if ( mapped_vals[0].bv_val != op->orc_ava->aa_value.bv_val ) {
 407                         ber_dupbv_x( &op->orc_ava->aa_value, &mapped_vals[0],
 408                                 op->o_tmpmemctx );
 409                 }
 410
 411         } else {
 412                 struct ldapmapping      *mapping = NULL;
 413                 AttributeDescription    *ad = op->orc_ava->aa_desc;
 414
 415                 ( void )rwm_mapping( &rwmap->rwm_at, &op->orc_ava->aa_desc->ad_cname,
 416                                 &mapping, RWM_MAP );
 417                 if ( mapping == NULL ) {
 418                         if ( rwmap->rwm_at.drop_missing ) {
 419                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 420                                 send_ldap_error( op, rs, LDAP_OTHER, "compare attributeType map error" );
 421                                 return -1;
 422                         }
 423
 424                 } else {
 425                         assert( mapping->m_dst_ad != NULL );
 426                         ad = mapping->m_dst_ad;
 427                 }
 428
 429                 if ( op->orc_ava->aa_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 430                                 || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 431                 {
 432                         struct berval   *mapped_valsp[2];
 433
 434                         mapped_valsp[0] = &mapped_vals[0];
 435                         mapped_valsp[1] = &mapped_vals[1];
 436
 437                         mapped_vals[0] = op->orc_ava->aa_value;
 438
 439                         rc = rwm_dnattr_rewrite( op, rs, "compareAttrDN", NULL, mapped_valsp );
 440
 441                         if ( rc != LDAP_SUCCESS ) {
 442                                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 443                                 send_ldap_error( op, rs, rc, "compareAttrDN massage error" );
 444                                 return -1;
 445                         }
 446
 447                         if ( mapped_vals[ 0 ].bv_val != op->orc_ava->aa_value.bv_val ) {
 448                                 /* NOTE: if we get here, rwm_dnattr_rewrite()
 449                                  * already freed the old value, so now
 450                                  * it's invalid */
 451                                 ber_dupbv_x( &op->orc_ava->aa_value, &mapped_vals[0],
 452                                         op->o_tmpmemctx );
 453                                 ber_memfree_x( mapped_vals[ 0 ].bv_val, NULL );
 454                         }
 455                 }
 456                 op->orc_ava->aa_desc = ad;
 457         }
 458
 459         op->o_callback = &roc->cb;
 460
 461         return SLAP_CB_CONTINUE;
 462 }
 463
 464 static int
 465 rwm_op_delete( Operation *op, SlapReply *rs )
 466 {
 467         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 468         int                     rc;
 469
 470         rwm_op_cb               *roc = rwm_callback_get( op, rs );
 471
 472         rc = rwm_op_dn_massage( op, rs, "deleteDN", &roc->ros );
 473         if ( rc != LDAP_SUCCESS ) {
 474                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 475                 send_ldap_error( op, rs, rc, "deleteDN massage error" );
 476                 return -1;
 477         }
 478
 479         op->o_callback = &roc->cb;
 480
 481         return SLAP_CB_CONTINUE;
 482 }
 483
 484 static int
 485 rwm_op_modify( Operation *op, SlapReply *rs )
 486 {
 487         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 488         struct ldaprwmap        *rwmap =
 489                         (struct ldaprwmap *)on->on_bi.bi_private;
 490
 491         int                     isupdate;
 492         Modifications           **mlp;
 493         int                     rc;
 494
 495         rwm_op_cb               *roc = rwm_callback_get( op, rs );
 496
 497         rc = rwm_op_dn_massage( op, rs, "modifyDN", &roc->ros );
 498         if ( rc != LDAP_SUCCESS ) {
 499                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 500                 send_ldap_error( op, rs, rc, "modifyDN massage error" );
 501                 return -1;
 502         }
 503
 504         isupdate = be_shadow_update( op );
 505         for ( mlp = &op->oq_modify.rs_modlist; *mlp; ) {
 506                 int                     is_oc = 0;
 507                 Modifications           *ml;
 508                 struct ldapmapping      *mapping = NULL;
 509
 510                 /* duplicate the modlist */
 511                 ml = ch_malloc( sizeof( Modifications ));
 512                 *ml = **mlp;
 513                 *mlp = ml;
 514
 515                 if ( ml->sml_desc == slap_schema.si_ad_objectClass
 516                                 || ml->sml_desc == slap_schema.si_ad_structuralObjectClass )
 517                 {
 518                         is_oc = 1;
 519
 520                 } else if ( !isupdate && !get_relax( op ) && ml->sml_desc->ad_type->sat_no_user_mod  )
 521                 {
 522                         goto next_mod;
 523
 524                 } else {
 525                         int                     drop_missing;
 526
 527                         drop_missing = rwm_mapping( &rwmap->rwm_at,
 528                                         &ml->sml_desc->ad_cname,
 529                                         &mapping, RWM_MAP );
 530                         if ( drop_missing || ( mapping != NULL && BER_BVISNULL( &mapping->m_dst ) ) )
 531                         {
 532                                 goto cleanup_mod;
 533                         }
 534                 }
 535
 536                 if ( ml->sml_values != NULL ) {
 537                         int i, num;
 538                         struct berval *bva;
 539
 540                         for ( num = 0; !BER_BVISNULL( &ml->sml_values[ num ] ); num++ )
 541                                 /* count values */ ;
 542
 543                         bva = ch_malloc( (num+1) * sizeof( struct berval ));
 544                         for (i=0; i<num; i++)
 545                                 ber_dupbv( &bva[i], &ml->sml_values[i] );
 546                         BER_BVZERO( &bva[i] );
 547                         ml->sml_values = bva;
 548
 549                         if ( ml->sml_nvalues ) {
 550                                 bva = ch_malloc( (num+1) * sizeof( struct berval ));
 551                                 for (i=0; i<num; i++)
 552                                         ber_dupbv( &bva[i], &ml->sml_nvalues[i] );
 553                                 BER_BVZERO( &bva[i] );
 554                                 ml->sml_nvalues = bva;
 555                         }
 556
 557                         if ( is_oc ) {
 558                                 int     last, j;
 559
 560                                 last = num-1;
 561
 562                                 for ( j = 0; !BER_BVISNULL( &ml->sml_values[ j ] ); j++ ) {
 563                                         struct ldapmapping      *oc_mapping = NULL;
 564
 565                                         ( void )rwm_mapping( &rwmap->rwm_oc, &ml->sml_values[ j ],
 566                                                         &oc_mapping, RWM_MAP );
 567                                         if ( oc_mapping == NULL ) {
 568                                                 if ( rwmap->rwm_at.drop_missing ) {
 569                                                         /* FIXME: we allow to remove objectClasses as well;
 570                                                          * if the resulting entry is inconsistent, that's
 571                                                          * the relayed database's business...
 572                                                          */
 573                                                         if ( last > j ) {
 574                                                                 ch_free( ml->sml_values[ j ].bv_val );
 575                                                                 ml->sml_values[ j ] = ml->sml_values[ last ];
 576                                                         }
 577                                                         BER_BVZERO( &ml->sml_values[ last ] );
 578                                                         last--;
 579                                                         j--;
 580                                                 }
 581
 582                                         } else {
 583                                                 ch_free( ml->sml_values[ j ].bv_val );
 584                                                 ber_dupbv( &ml->sml_values[ j ], &oc_mapping->m_dst );
 585                                         }
 586                                 }
 587
 588                         } else {
 589                                 if ( ml->sml_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 590                                                 || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 591                                 {
 592                                         rc = rwm_dnattr_rewrite( op, rs, "modifyAttrDN",
 593                                                         ml->sml_values,
 594                                                         ml->sml_nvalues ? &ml->sml_nvalues : NULL );
 595
 596                                 } else if ( ml->sml_desc == slap_schema.si_ad_ref ) {
 597                                         rc = rwm_referral_rewrite( op, rs,
 598                                                         "referralAttrDN",
 599                                                         ml->sml_values,
 600                                                         ml->sml_nvalues ? &ml->sml_nvalues : NULL );
 601                                         if ( rc != LDAP_SUCCESS ) {
 602                                                 goto cleanup_mod;
 603                                         }
 604                                 }
 605
 606                                 if ( rc != LDAP_SUCCESS ) {
 607                                         goto cleanup_mod;
 608                                 }
 609                         }
 610                 }
 611
 612 next_mod:;
 613                 if ( mapping != NULL ) {
 614                         /* use new attribute description */
 615                         assert( mapping->m_dst_ad != NULL );
 616                         ml->sml_desc = mapping->m_dst_ad;
 617                 }
 618
 619                 mlp = &ml->sml_next;
 620                 continue;
 621
 622 cleanup_mod:;
 623                 ml = *mlp;
 624                 *mlp = (*mlp)->sml_next;
 625                 slap_mod_free( &ml->sml_mod, 0 );
 626                 free( ml );
 627         }
 628
 629         op->o_callback = &roc->cb;
 630
 631         return SLAP_CB_CONTINUE;
 632 }
 633
 634 static int
 635 rwm_op_modrdn( Operation *op, SlapReply *rs )
 636 {
 637         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 638         struct ldaprwmap        *rwmap =
 639                         (struct ldaprwmap *)on->on_bi.bi_private;
 640
 641         int                     rc;
 642
 643         rwm_op_cb               *roc = rwm_callback_get( op, rs );
 644
 645         if ( op->orr_newSup ) {
 646                 dncookie        dc;
 647                 struct berval   nnewSup = BER_BVNULL;
 648                 struct berval   newSup = BER_BVNULL;
 649
 650                 /*
 651                  * Rewrite the new superior, if defined and required
 652                  */
 653                 dc.rwmap = rwmap;
 654                 dc.conn = op->o_conn;
 655                 dc.rs = rs;
 656                 dc.ctx = "newSuperiorDN";
 657                 newSup = *op->orr_newSup;
 658                 nnewSup = *op->orr_nnewSup;
 659                 rc = rwm_dn_massage_pretty_normalize( &dc, op->orr_newSup, &newSup, &nnewSup );
 660                 if ( rc != LDAP_SUCCESS ) {
 661                         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 662                         send_ldap_error( op, rs, rc, "newSuperiorDN massage error" );
 663                         return -1;
 664                 }
 665
 666                 if ( op->orr_newSup->bv_val != newSup.bv_val ) {
 667                         op->orr_newSup = op->o_tmpalloc( sizeof( struct berval ),
 668                                 op->o_tmpmemctx );
 669                         op->orr_nnewSup = op->o_tmpalloc( sizeof( struct berval ),
 670                                 op->o_tmpmemctx );
 671                         *op->orr_newSup = newSup;
 672                         *op->orr_nnewSup = nnewSup;
 673                 }
 674         }
 675
 676         /*
 677          * Rewrite the dn, if needed
 678          */
 679         rc = rwm_op_dn_massage( op, rs, "renameDN", &roc->ros );
 680         if ( rc != LDAP_SUCCESS ) {
 681                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 682                 send_ldap_error( op, rs, rc, "renameDN massage error" );
 683                 if ( op->orr_newSup != roc->ros.orr_newSup ) {
 684                         ch_free( op->orr_newSup->bv_val );
 685                         ch_free( op->orr_nnewSup->bv_val );
 686                         op->o_tmpfree( op->orr_newSup, op->o_tmpmemctx );
 687                         op->o_tmpfree( op->orr_nnewSup, op->o_tmpmemctx );
 688                         op->orr_newSup = roc->ros.orr_newSup;
 689                         op->orr_nnewSup = roc->ros.orr_nnewSup;
 690                 }
 691                 return -1;
 692         }
 693
 694         /* TODO: rewrite newRDN, attribute types,
 695          * values of DN-valued attributes ... */
 696
 697         op->o_callback = &roc->cb;
 698
 699         return SLAP_CB_CONTINUE;
 700 }
 701
 702
 703 static int
 704 rwm_swap_attrs( Operation *op, SlapReply *rs )
 705 {
 706         slap_callback   *cb = op->o_callback;
 707         rwm_op_state *ros = cb->sc_private;
 708
 709         rs->sr_attrs = ros->ors_attrs;
 710
 711         /* other overlays might have touched op->ors_attrs,
 712          * so we restore the original version here, otherwise
 713          * attribute-mapping might fail */
 714         op->ors_attrs = ros->mapped_attrs;
 715
 716         return SLAP_CB_CONTINUE;
 717 }
 718
 719 static int
 720 rwm_op_search( Operation *op, SlapReply *rs )
 721 {
 722         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 723         struct ldaprwmap        *rwmap =
 724                         (struct ldaprwmap *)on->on_bi.bi_private;
 725
 726         int                     rc;
 727         dncookie                dc;
 728
 729         struct berval           fstr = BER_BVNULL;
 730         Filter                  *f = NULL;
 731
 732         AttributeName           *an = NULL;
 733
 734         char                    *text = NULL;
 735
 736         rwm_op_cb               *roc = rwm_callback_get( op, rs );
 737
 738         rc = rewrite_session_var_set( rwmap->rwm_rw, op->o_conn,
 739                 "searchFilter", op->ors_filterstr.bv_val );
 740         if ( rc == LDAP_SUCCESS )
 741                 rc = rwm_op_dn_massage( op, rs, "searchDN", &roc->ros );
 742         if ( rc != LDAP_SUCCESS ) {
 743                 text = "searchDN massage error";
 744                 goto error_return;
 745         }
 746
 747         /*
 748          * Rewrite the dn if needed
 749          */
 750         dc.rwmap = rwmap;
 751         dc.conn = op->o_conn;
 752         dc.rs = rs;
 753         dc.ctx = "searchFilterAttrDN";
 754
 755         rc = rwm_filter_map_rewrite( op, &dc, op->ors_filter, &fstr );
 756         if ( rc != LDAP_SUCCESS ) {
 757                 text = "searchFilter/searchFilterAttrDN massage error";
 758                 goto error_return;
 759         }
 760
 761         f = str2filter_x( op, fstr.bv_val );
 762
 763         if ( f == NULL ) {
 764                 text = "massaged filter parse error";
 765                 goto error_return;
 766         }
 767
 768         op->ors_filter = f;
 769         op->ors_filterstr = fstr;
 770
 771         rc = rwm_map_attrnames( &rwmap->rwm_at, &rwmap->rwm_oc,
 772                         op->ors_attrs, &an, RWM_MAP );
 773         if ( rc != LDAP_SUCCESS ) {
 774                 text = "attribute list mapping error";
 775                 goto error_return;
 776         }
 777
 778         op->ors_attrs = an;
 779         /* store the mapped Attributes for later usage, in
 780          * the case that other overlays change op->ors_attrs */
 781         roc->ros.mapped_attrs = an;
 782         roc->cb.sc_response = rwm_swap_attrs;
 783
 784         op->o_callback = &roc->cb;
 785
 786         return SLAP_CB_CONTINUE;
 787
 788 error_return:;
 789         if ( an != NULL ) {
 790                 ch_free( an );
 791         }
 792
 793         if ( f != NULL ) {
 794                 filter_free_x( op, f );
 795         }
 796
 797         if ( !BER_BVISNULL( &fstr ) ) {
 798                 ch_free( fstr.bv_val );
 799         }
 800
 801         op->oq_search = roc->ros.oq_search;
 802
 803         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 804         send_ldap_error( op, rs, rc, text );
 805
 806         return -1;
 807
 808 }
 809
 810 static int
 811 rwm_exop_passwd( Operation *op, SlapReply *rs )
 812 {
 813         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 814         int                     rc;
 815         rwm_op_cb *roc;
 816
 817         struct berval   id = BER_BVNULL,
 818                         pwold = BER_BVNULL,
 819                         pwnew = BER_BVNULL;
 820         BerElement *ber = NULL;
 821
 822         if ( !BER_BVISNULL( &op->o_req_ndn ) ) {
 823                 return LDAP_SUCCESS;
 824         }
 825
 826         if ( !SLAP_ISGLOBALOVERLAY( op->o_bd ) ) {
 827                 rs->sr_err = LDAP_OTHER;
 828                 return rs->sr_err;
 829         }
 830
 831         rs->sr_err = slap_passwd_parse( op->ore_reqdata, &id,
 832                 &pwold, &pwnew, &rs->sr_text );
 833         if ( rs->sr_err != LDAP_SUCCESS ) {
 834                 return rs->sr_err;
 835         }
 836
 837         if ( !BER_BVISNULL( &id ) ) {
 838                 rs->sr_err = dnPrettyNormal( NULL, &id, &op->o_req_dn,
 839                                 &op->o_req_ndn, op->o_tmpmemctx );
 840                 if ( rs->sr_err != LDAP_SUCCESS ) {
 841                         rs->sr_text = "Invalid DN";
 842                         return rs->sr_err;
 843                 }
 844
 845         } else {
 846                 ber_dupbv_x( &op->o_req_dn, &op->o_dn, op->o_tmpmemctx );
 847                 ber_dupbv_x( &op->o_req_ndn, &op->o_ndn, op->o_tmpmemctx );
 848         }
 849
 850         roc = rwm_callback_get( op, rs );
 851
 852         rc = rwm_op_dn_massage( op, rs, "extendedDN", &roc->ros );
 853         if ( rc != LDAP_SUCCESS ) {
 854                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 855                 send_ldap_error( op, rs, rc, "extendedDN massage error" );
 856                 return -1;
 857         }
 858
 859         ber = ber_alloc_t( LBER_USE_DER );
 860         if ( !ber ) {
 861                 rs->sr_err = LDAP_OTHER;
 862                 rs->sr_text = "No memory";
 863                 return rs->sr_err;
 864         }
 865         ber_printf( ber, "{" );
 866         if ( !BER_BVISNULL( &id )) {
 867                 ber_printf( ber, "tO", LDAP_TAG_EXOP_MODIFY_PASSWD_ID,
 868                         &op->o_req_dn );
 869         }
 870         if ( !BER_BVISNULL( &pwold )) {
 871                 ber_printf( ber, "tO", LDAP_TAG_EXOP_MODIFY_PASSWD_OLD, &pwold );
 872         }
 873         if ( !BER_BVISNULL( &pwnew )) {
 874                 ber_printf( ber, "tO", LDAP_TAG_EXOP_MODIFY_PASSWD_NEW, &pwnew );
 875         }
 876         ber_printf( ber, "N}" );
 877         ber_flatten( ber, &op->ore_reqdata );
 878         ber_free( ber, 1 );
 879
 880         op->o_callback = &roc->cb;
 881
 882         return SLAP_CB_CONTINUE;
 883 }
 884
 885 static struct exop {
 886         struct berval   oid;
 887         BI_op_extended  *extended;
 888 } exop_table[] = {
 889         { BER_BVC(LDAP_EXOP_MODIFY_PASSWD),     rwm_exop_passwd },
 890         { BER_BVNULL, NULL }
 891 };
 892
 893 static int
 894 rwm_extended( Operation *op, SlapReply *rs )
 895 {
 896         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 897         int                     rc;
 898         rwm_op_cb *roc;
 899
 900         int     i;
 901
 902         for ( i = 0; exop_table[i].extended != NULL; i++ ) {
 903                 if ( bvmatch( &exop_table[i].oid, &op->oq_extended.rs_reqoid ) )
 904                 {
 905                         rc = exop_table[i].extended( op, rs );
 906                         switch ( rc ) {
 907                         case LDAP_SUCCESS:
 908                                 break;
 909
 910                         case SLAP_CB_CONTINUE:
 911                         case SLAPD_ABANDON:
 912                                 return rc;
 913
 914                         default:
 915                                 send_ldap_result( op, rs );
 916                                 return rc;
 917                         }
 918                         break;
 919                 }
 920         }
 921
 922         roc = rwm_callback_get( op, rs );
 923
 924         rc = rwm_op_dn_massage( op, rs, "extendedDN", &roc->ros );
 925         if ( rc != LDAP_SUCCESS ) {
 926                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
 927                 send_ldap_error( op, rs, rc, "extendedDN massage error" );
 928                 return -1;
 929         }
 930
 931         /* TODO: rewrite/map extended data ? ... */
 932         op->o_callback = &roc->cb;
 933
 934         return SLAP_CB_CONTINUE;
 935 }
 936
 937 static int
 938 rwm_matched( Operation *op, SlapReply *rs )
 939 {
 940         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 941         struct ldaprwmap        *rwmap =
 942                         (struct ldaprwmap *)on->on_bi.bi_private;
 943
 944         struct berval           dn, mdn;
 945         dncookie                dc;
 946         int                     rc;
 947
 948         if ( rs->sr_matched == NULL ) {
 949                 return SLAP_CB_CONTINUE;
 950         }
 951
 952         dc.rwmap = rwmap;
 953         dc.conn = op->o_conn;
 954         dc.rs = rs;
 955         dc.ctx = "matchedDN";
 956         ber_str2bv( rs->sr_matched, 0, 0, &dn );
 957         mdn = dn;
 958         rc = rwm_dn_massage_pretty( &dc, &dn, &mdn );
 959         if ( rc != LDAP_SUCCESS ) {
 960                 rs->sr_err = rc;
 961                 rs->sr_text = "Rewrite error";
 962                 return 1;
 963         }
 964
 965         if ( mdn.bv_val != dn.bv_val ) {
 966                 if ( rs->sr_flags & REP_MATCHED_MUSTBEFREED ) {
 967                         ch_free( (void *)rs->sr_matched );
 968
 969                 } else {
 970                         rs->sr_flags |= REP_MATCHED_MUSTBEFREED;
 971                 }
 972                 rs->sr_matched = mdn.bv_val;
 973         }
 974
 975         return SLAP_CB_CONTINUE;
 976 }
 977
 978 static int
 979 rwm_attrs( Operation *op, SlapReply *rs, Attribute** a_first, int stripEntryDN )
 980 {
 981         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 982         struct ldaprwmap        *rwmap =
 983                         (struct ldaprwmap *)on->on_bi.bi_private;
 984
 985         dncookie                dc;
 986         int                     rc;
 987         Attribute               **ap;
 988         int                     isupdate;
 989
 990         /*
 991          * Rewrite the dn attrs, if needed
 992          */
 993         dc.rwmap = rwmap;
 994         dc.conn = op->o_conn;
 995         dc.rs = NULL;
 996
 997         /* FIXME: the entries are in the remote mapping form;
 998          * so we need to select those attributes we are willing
 999          * to return, and remap them accordingly */
1000
1001         /* FIXME: in principle, one could map an attribute
1002          * on top of another, which already exists.
1003          * As such, in the end there might exist more than
1004          * one instance of an attribute.
1005          * We should at least check if this occurs, and issue
1006          * an error (because multiple instances of attrs in
1007          * response are not valid), or merge the values (what
1008          * about duplicate values?) */
1009         isupdate = be_shadow_update( op );
1010         for ( ap = a_first; *ap; ) {
1011                 struct ldapmapping      *mapping = NULL;
1012                 int                     drop_missing;
1013                 int                     last=-1;
1014                 Attribute               *a;
1015
1016                 if ( SLAP_OPATTRS( rs->sr_attr_flags ) && is_at_operational( (*ap)->a_desc->ad_type ) )
1017                 {
1018                         /* go on */ ;
1019
1020                 } else {
1021                         if ( op->ors_attrs != NULL &&
1022                                         !SLAP_USERATTRS( rs->sr_attr_flags ) &&
1023                                         !ad_inlist( (*ap)->a_desc, op->ors_attrs ) )
1024                         {
1025                                 goto cleanup_attr;
1026                         }
1027
1028                         drop_missing = rwm_mapping( &rwmap->rwm_at,
1029                                         &(*ap)->a_desc->ad_cname, &mapping, RWM_REMAP );
1030                         if ( drop_missing || ( mapping != NULL && BER_BVISEMPTY( &mapping->m_dst ) ) )
1031                         {
1032                                 goto cleanup_attr;
1033                         }
1034                         if ( mapping != NULL ) {
1035                                 assert( mapping->m_dst_ad != NULL );
1036
1037                                 /* try to normalize mapped Attributes if the original
1038                                  * AttributeType was not normalized */
1039                                 if ((rwmap->rwm_flags & RWM_F_NORMALIZE_MAPPED_ATTRS) &&
1040                                         (!(*ap)->a_desc->ad_type->sat_equality ||
1041                                         !(*ap)->a_desc->ad_type->sat_equality->smr_normalize) &&
1042                                         mapping->m_dst_ad->ad_type->sat_equality &&
1043                                         mapping->m_dst_ad->ad_type->sat_equality->smr_normalize )
1044                                 {
1045                                         int i=0;
1046                                         for ( last = 0; !BER_BVISNULL( &(*ap)->a_vals[last] ); last++ )
1047                                                 /* just count */ ;
1048
1049                                         if ( last )
1050                                         {
1051                                                 (*ap)->a_nvals = ch_malloc( (last+1) * sizeof(struct berval) );
1052
1053                                                 for ( i = 0; !BER_BVISNULL( &(*ap)->a_vals[i]); i++ ) {
1054                                                         int             rc;
1055                                                         /*
1056                                                          * check that each value is valid per syntax
1057                                                          * and pretty if appropriate
1058                                                          */
1059                                                         rc = mapping->m_dst_ad->ad_type->sat_equality->smr_normalize(
1060                                                                 SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX,
1061                                                                 mapping->m_dst_ad->ad_type->sat_syntax,
1062                                                                 mapping->m_dst_ad->ad_type->sat_equality,
1063                                                                 &(*ap)->a_vals[i], &(*ap)->a_nvals[i],
1064                                                                 NULL );
1065
1066                                                         if ( rc != LDAP_SUCCESS ) {
1067                                                                 BER_BVZERO( &(*ap)->a_nvals[i] );
1068                                                         }
1069                                                 }
1070                                                 BER_BVZERO( &(*ap)->a_nvals[i] );
1071                                         }
1072                                 }
1073                                 /* rewrite the attribute description */
1074                                 (*ap)->a_desc = mapping->m_dst_ad;
1075                         }
1076                 }
1077
1078                 if ( (*ap)->a_desc == slap_schema.si_ad_entryDN ) {
1079                         if ( stripEntryDN ) {
1080                                 /* will be generated by frontend */
1081                                 goto cleanup_attr;
1082                         }
1083
1084                 } else if ( !isupdate
1085                         && !get_relax( op )
1086                         && (*ap)->a_desc->ad_type->sat_no_user_mod
1087                         && (*ap)->a_desc->ad_type != slap_schema.si_at_undefined )
1088                 {
1089                         goto next_attr;
1090                 }
1091
1092                 if ( last == -1 ) { /* not yet counted */
1093                         for ( last = 0; !BER_BVISNULL( &(*ap)->a_vals[last] ); last++ )
1094                                 /* just count */ ;
1095                 }
1096
1097                 if ( last == 0 ) {
1098                         /* empty? leave it in place because of attrsonly and vlv */
1099                         goto next_attr;
1100                 }
1101                 last--;
1102
1103                 if ( (*ap)->a_desc == slap_schema.si_ad_objectClass
1104                                 || (*ap)->a_desc == slap_schema.si_ad_structuralObjectClass )
1105                 {
1106                         struct berval   *bv;
1107
1108                         for ( bv = (*ap)->a_vals; !BER_BVISNULL( bv ); bv++ ) {
1109                                 struct berval   mapped;
1110
1111                                 rwm_map( &rwmap->rwm_oc, &bv[0], &mapped, RWM_REMAP );
1112                                 if ( BER_BVISNULL( &mapped ) || BER_BVISEMPTY( &mapped ) ) {
1113                                         ch_free( bv[0].bv_val );
1114                                         BER_BVZERO( &bv[0] );
1115                                         if ( &(*ap)->a_vals[last] > &bv[0] ) {
1116                                                 bv[0] = (*ap)->a_vals[last];
1117                                                 BER_BVZERO( &(*ap)->a_vals[last] );
1118                                         }
1119                                         last--;
1120                                         bv--;
1121
1122                                 } else if ( mapped.bv_val != bv[0].bv_val ) {
1123                                         /*
1124                                          * FIXME: after LBER_FREEing
1125                                          * the value is replaced by
1126                                          * ch_alloc'ed memory
1127                                          */
1128                                         ber_bvreplace( &bv[0], &mapped );
1129                                 }
1130                         }
1131
1132                 /*
1133                  * It is necessary to try to rewrite attributes with
1134                  * dn syntax because they might be used in ACLs as
1135                  * members of groups; since ACLs are applied to the
1136                  * rewritten stuff, no dn-based subject clause could
1137                  * be used at the ldap backend side (see
1138                  * http://www.OpenLDAP.org/faq/data/cache/452.html)
1139                  * The problem can be overcome by moving the dn-based
1140                  * ACLs to the target directory server, and letting
1141                  * everything pass thru the ldap backend. */
1142                 /* FIXME: handle distinguishedName-like syntaxes, like
1143                  * nameAndOptionalUID */
1144                 } else if ( (*ap)->a_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
1145                                 || ( mapping != NULL && mapping->m_src_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
1146                 {
1147                         dc.ctx = "searchAttrDN";
1148                         rc = rwm_dnattr_result_rewrite( &dc, (*ap)->a_vals );
1149                         if ( rc != LDAP_SUCCESS ) {
1150                                 goto cleanup_attr;
1151                         }
1152
1153                 } else if ( (*ap)->a_desc == slap_schema.si_ad_ref ) {
1154                         dc.ctx = "searchAttrDN";
1155                         rc = rwm_referral_result_rewrite( &dc, (*ap)->a_vals );
1156                         if ( rc != LDAP_SUCCESS ) {
1157                                 goto cleanup_attr;
1158                         }
1159                 }
1160
1161
1162 next_attr:;
1163                 ap = &(*ap)->a_next;
1164                 continue;
1165
1166 cleanup_attr:;
1167                 a = *ap;
1168                 *ap = (*ap)->a_next;
1169
1170                 attr_free( a );
1171         }
1172
1173         return 0;
1174 }
1175
1176 static int
1177 rwm_send_entry( Operation *op, SlapReply *rs )
1178 {
1179         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
1180         struct ldaprwmap        *rwmap =
1181                         (struct ldaprwmap *)on->on_bi.bi_private;
1182
1183         Entry                   *e = NULL;
1184         slap_mask_t             flags;
1185         struct berval           dn = BER_BVNULL,
1186                                 ndn = BER_BVNULL;
1187         dncookie                dc;
1188         int                     rc;
1189
1190         assert( rs->sr_entry != NULL );
1191
1192         /*
1193          * Rewrite the dn of the result, if needed
1194          */
1195         dc.rwmap = rwmap;
1196         dc.conn = op->o_conn;
1197         dc.rs = NULL;
1198         dc.ctx = "searchEntryDN";
1199
1200         e = rs->sr_entry;
1201         flags = rs->sr_flags;
1202         if ( !( rs->sr_flags & REP_ENTRY_MODIFIABLE ) ) {
1203                 /* FIXME: all we need to duplicate are:
1204                  * - dn
1205                  * - ndn
1206                  * - attributes that are requested
1207                  * - no values if attrsonly is set
1208                  */
1209
1210                 e = entry_dup( e );
1211                 if ( e == NULL ) {
1212                         rc = LDAP_NO_MEMORY;
1213                         goto fail;
1214                 }
1215
1216                 flags &= ~REP_ENTRY_MUSTRELEASE;
1217                 flags |= ( REP_ENTRY_MODIFIABLE | REP_ENTRY_MUSTBEFREED );
1218         }
1219
1220         /*
1221          * Note: this may fail if the target host(s) schema differs
1222          * from the one known to the meta, and a DN with unknown
1223          * attributes is returned.
1224          */
1225         dn = e->e_name;
1226         ndn = e->e_nname;
1227         rc = rwm_dn_massage_pretty_normalize( &dc, &e->e_name, &dn, &ndn );
1228         if ( rc != LDAP_SUCCESS ) {
1229                 rc = 1;
1230                 goto fail;
1231         }
1232
1233         if ( e->e_name.bv_val != dn.bv_val ) {
1234                 ch_free( e->e_name.bv_val );
1235                 ch_free( e->e_nname.bv_val );
1236
1237                 e->e_name = dn;
1238                 e->e_nname = ndn;
1239         }
1240
1241         /* TODO: map entry attribute types, objectclasses
1242          * and dn-valued attribute values */
1243
1244         /* FIXME: the entries are in the remote mapping form;
1245          * so we need to select those attributes we are willing
1246          * to return, and remap them accordingly */
1247         (void)rwm_attrs( op, rs, &e->e_attrs, 1 );
1248
1249         if ( rs->sr_flags & REP_ENTRY_MUSTRELEASE ) {
1250                 be_entry_release_rw( op, rs->sr_entry, 0 );
1251         }
1252
1253         rs->sr_entry = e;
1254         rs->sr_flags = flags;
1255
1256         return SLAP_CB_CONTINUE;
1257
1258 fail:;
1259         if ( e != NULL && e != rs->sr_entry ) {
1260                 if ( e->e_name.bv_val == dn.bv_val ) {
1261                         BER_BVZERO( &e->e_name );
1262                 }
1263
1264                 if ( e->e_nname.bv_val == ndn.bv_val ) {
1265                         BER_BVZERO( &e->e_nname );
1266                 }
1267
1268                 entry_free( e );
1269         }
1270
1271         if ( !BER_BVISNULL( &dn ) ) {
1272                 ch_free( dn.bv_val );
1273         }
1274
1275         if ( !BER_BVISNULL( &ndn ) ) {
1276                 ch_free( ndn.bv_val );
1277         }
1278
1279         return rc;
1280 }
1281
1282 static int
1283 rwm_operational( Operation *op, SlapReply *rs )
1284 {
1285         /* FIXME: the entries are in the remote mapping form;
1286          * so we need to select those attributes we are willing
1287          * to return, and remap them accordingly */
1288         if ( rs->sr_operational_attrs ) {
1289                 rwm_attrs( op, rs, &rs->sr_operational_attrs, 1 );
1290         }
1291
1292         return SLAP_CB_CONTINUE;
1293 }
1294
1295 #if 0
1296 /* don't use this; it cannot be reverted, and leaves op->o_req_dn
1297  * rewritten for subsequent operations; fine for plain suffixmassage,
1298  * but destroys everything else */
1299 static int
1300 rwm_chk_referrals( Operation *op, SlapReply *rs )
1301 {
1302         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
1303         int                     rc;
1304
1305         rc = rwm_op_dn_massage( op, rs, "referralCheckDN" );
1306         if ( rc != LDAP_SUCCESS ) {
1307                 op->o_bd->bd_info = (BackendInfo *)on->on_info;
1308                 send_ldap_error( op, rs, rc, "referralCheckDN massage error" );
1309                 return -1;
1310         }
1311
1312         return SLAP_CB_CONTINUE;
1313 }
1314 #endif
1315
1316 static int
1317 rwm_rw_config(
1318         BackendDB       *be,
1319         const char      *fname,
1320         int             lineno,
1321         int             argc,
1322         char            **argv )
1323 {
1324         slap_overinst           *on = (slap_overinst *) be->bd_info;
1325         struct ldaprwmap        *rwmap =
1326                         (struct ldaprwmap *)on->on_bi.bi_private;
1327
1328         return rewrite_parse( rwmap->rwm_rw,
1329                                 fname, lineno, argc, argv );
1330
1331         return 0;
1332 }
1333
1334 static int
1335 rwm_suffixmassage_config(
1336         BackendDB       *be,
1337         const char      *fname,
1338         int             lineno,
1339         int             argc,
1340         char            **argv )
1341 {
1342         slap_overinst           *on = (slap_overinst *) be->bd_info;
1343         struct ldaprwmap        *rwmap =
1344                         (struct ldaprwmap *)on->on_bi.bi_private;
1345
1346         struct berval           bvnc, nvnc, pvnc, brnc, nrnc, prnc;
1347         int                     massaged;
1348         int                     rc;
1349
1350         /*
1351          * syntax:
1352          *
1353          *      suffixmassage [<suffix>] <massaged suffix>
1354          *
1355          * the [<suffix>] field must be defined as a valid suffix
1356          * for the current database;
1357          * the <massaged suffix> shouldn't have already been
1358          * defined as a valid suffix for the current server
1359          */
1360         if ( argc == 2 ) {
1361                 if ( be->be_suffix == NULL ) {
1362                         fprintf( stderr, "%s: line %d: "
1363                                        " \"suffixMassage [<suffix>]"
1364                                        " <massaged suffix>\" without "
1365                                        "<suffix> part requires database "
1366                                        "suffix be defined first.\n",
1367                                 fname, lineno );
1368                         return 1;
1369                 }
1370                 bvnc = be->be_suffix[ 0 ];
1371                 massaged = 1;
1372
1373         } else if ( argc == 3 ) {
1374                 ber_str2bv( argv[ 1 ], 0, 0, &bvnc );
1375                 massaged = 2;
1376
1377         } else  {
1378                 fprintf( stderr, "%s: line %d: syntax is"
1379                                " \"suffixMassage [<suffix>]"
1380                                " <massaged suffix>\"\n",
1381                         fname, lineno );
1382                 return 1;
1383         }
1384
1385         if ( dnPrettyNormal( NULL, &bvnc, &pvnc, &nvnc, NULL ) != LDAP_SUCCESS ) {
1386                 fprintf( stderr, "%s: line %d: suffix DN %s is invalid\n",
1387                         fname, lineno, bvnc.bv_val );
1388                 return 1;
1389         }
1390
1391         ber_str2bv( argv[ massaged ], 0, 0, &brnc );
1392         if ( dnPrettyNormal( NULL, &brnc, &prnc, &nrnc, NULL ) != LDAP_SUCCESS ) {
1393                 fprintf( stderr, "%s: line %d: suffix DN %s is invalid\n",
1394                                 fname, lineno, brnc.bv_val );
1395                 free( nvnc.bv_val );
1396                 free( pvnc.bv_val );
1397                 return 1;
1398         }
1399
1400         /*
1401          * The suffix massaging is emulated
1402          * by means of the rewrite capabilities
1403          */
1404         rc = rwm_suffix_massage_config( rwmap->rwm_rw,
1405                         &pvnc, &nvnc, &prnc, &nrnc );
1406         free( nvnc.bv_val );
1407         free( pvnc.bv_val );
1408         free( nrnc.bv_val );
1409         free( prnc.bv_val );
1410
1411         return rc;
1412 }
1413
1414 static int
1415 rwm_m_config(
1416         BackendDB       *be,
1417         const char      *fname,
1418         int             lineno,
1419         int             argc,
1420         char            **argv )
1421 {
1422         slap_overinst           *on = (slap_overinst *) be->bd_info;
1423         struct ldaprwmap        *rwmap =
1424                         (struct ldaprwmap *)on->on_bi.bi_private;
1425
1426         /* objectclass/attribute mapping */
1427         return rwm_map_config( &rwmap->rwm_oc,
1428                         &rwmap->rwm_at,
1429                         fname, lineno, argc, argv );
1430 }
1431
1432 static int
1433 rwm_response( Operation *op, SlapReply *rs )
1434 {
1435         slap_overinst           *on = (slap_overinst *)op->o_bd->bd_info;
1436         struct ldaprwmap        *rwmap =
1437                         (struct ldaprwmap *)on->on_bi.bi_private;
1438
1439         int             rc;
1440
1441         if ( op->o_tag == LDAP_REQ_SEARCH && rs->sr_type == REP_SEARCH ) {
1442                 return rwm_send_entry( op, rs );
1443         }
1444
1445         switch( op->o_tag ) {
1446         case LDAP_REQ_SEARCH:
1447         case LDAP_REQ_BIND:
1448         case LDAP_REQ_ADD:
1449         case LDAP_REQ_DELETE:
1450         case LDAP_REQ_MODRDN:
1451         case LDAP_REQ_MODIFY:
1452         case LDAP_REQ_COMPARE:
1453         case LDAP_REQ_EXTENDED:
1454                 if ( rs->sr_ref ) {
1455                         dncookie                dc;
1456
1457                         /*
1458                          * Rewrite the dn of the referrals, if needed
1459                          */
1460                         dc.rwmap = rwmap;
1461                         dc.conn = op->o_conn;
1462                         dc.rs = NULL;
1463                         dc.ctx = "referralDN";
1464                         rc = rwm_referral_result_rewrite( &dc, rs->sr_ref );
1465                         if ( rc != LDAP_SUCCESS ) {
1466                                 rc = 1;
1467                                 break;
1468                         }
1469                 }
1470                 rc = rwm_matched( op, rs );
1471                 break;
1472
1473         default:
1474                 rc = SLAP_CB_CONTINUE;
1475                 break;
1476         }
1477
1478         return rc;
1479 }
1480
1481 static int
1482 rwm_db_config(
1483         BackendDB       *be,
1484         const char      *fname,
1485         int             lineno,
1486         int             argc,
1487         char            **argv )
1488 {
1489         slap_overinst           *on = (slap_overinst *) be->bd_info;
1490         struct ldaprwmap        *rwmap =
1491                         (struct ldaprwmap *)on->on_bi.bi_private;
1492
1493         int             rc = 0;
1494         char            *argv0 = NULL;
1495
1496         if ( strncasecmp( argv[ 0 ], "rwm-", STRLENOF( "rwm-" ) ) == 0 ) {
1497                 argv0 = argv[ 0 ];
1498                 argv[ 0 ] = &argv0[ STRLENOF( "rwm-" ) ];
1499         }
1500
1501         if ( strncasecmp( argv[0], "rewrite", STRLENOF("rewrite") ) == 0 ) {
1502                 rc = rwm_rw_config( be, fname, lineno, argc, argv );
1503
1504         } else if ( strcasecmp( argv[0], "map" ) == 0 ) {
1505                 rc = rwm_m_config( be, fname, lineno, argc, argv );
1506
1507         } else if ( strcasecmp( argv[0], "suffixmassage" ) == 0 ) {
1508                 rc = rwm_suffixmassage_config( be, fname, lineno, argc, argv );
1509
1510         } else if ( strcasecmp( argv[0], "t-f-support" ) == 0 ) {
1511                 if ( argc != 2 ) {
1512                         fprintf( stderr,
1513                 "%s: line %d: \"t-f-support {no|yes|discover}\" needs 1 argument.\n",
1514                                         fname, lineno );
1515                         return( 1 );
1516                 }
1517
1518                 if ( strcasecmp( argv[ 1 ], "no" ) == 0 ) {
1519                         rwmap->rwm_flags &= ~(RWM_F_SUPPORT_T_F_MASK2);
1520
1521                 } else if ( strcasecmp( argv[ 1 ], "yes" ) == 0 ) {
1522                         rwmap->rwm_flags |= RWM_F_SUPPORT_T_F;
1523
1524                 /* TODO: not implemented yet */
1525                 } else if ( strcasecmp( argv[ 1 ], "discover" ) == 0 ) {
1526                         fprintf( stderr,
1527                 "%s: line %d: \"discover\" not supported yet "
1528                 "in \"t-f-support {no|yes|discover}\".\n",
1529                                         fname, lineno );
1530                         return( 1 );
1531 #if 0
1532                         rwmap->rwm_flags |= RWM_F_SUPPORT_T_F_DISCOVER;
1533 #endif
1534
1535                 } else {
1536                         fprintf( stderr,
1537         "%s: line %d: unknown value \"%s\" for \"t-f-support {no|yes|discover}\".\n",
1538                                 fname, lineno, argv[ 1 ] );
1539                         return 1;
1540                 }
1541         } else if ( strcasecmp( argv[0], "normalize-mapped-attrs" ) ==  0 ) {
1542                 if ( argc !=2 ) {
1543                         fprintf( stderr,
1544                 "%s: line %d: \"normalize-mapped-attrs {no|yes}\" needs 1 argument.\n",
1545                                         fname, lineno );
1546                         return( 1 );
1547                 }
1548
1549                 if ( strcasecmp( argv[ 1 ], "no" ) == 0 ) {
1550                         rwmap->rwm_flags &= ~(RWM_F_NORMALIZE_MAPPED_ATTRS);
1551
1552                 } else if ( strcasecmp( argv[ 1 ], "yes" ) == 0 ) {
1553                         rwmap->rwm_flags |= RWM_F_NORMALIZE_MAPPED_ATTRS;
1554                 }
1555
1556         } else {
1557                 rc = SLAP_CONF_UNKNOWN;
1558         }
1559
1560         if ( argv0 ) {
1561                 argv[ 0 ] = argv0;
1562         }
1563
1564         return rc;
1565 }
1566
1567 /*
1568  * dynamic configuration...
1569  */
1570
1571 enum {
1572         /* rewrite */
1573         RWM_CF_REWRITE = 1,
1574         RWM_CF_SUFFIXMASSAGE,
1575         RWM_CF_T_F_SUPPORT,
1576
1577         /* map */
1578         RWM_CF_MAP,
1579         RWM_CF_NORMALIZE_MAPPED,
1580
1581         RWM_CF_LAST
1582 };
1583
1584 static slap_verbmasks t_f_mode[] = {
1585         { BER_BVC( "yes" ),             RWM_F_SUPPORT_T_F },
1586         { BER_BVC( "discover" ),        RWM_F_SUPPORT_T_F_DISCOVER },
1587         { BER_BVC( "no" ),              RWM_F_NONE },
1588         { BER_BVNULL,                   0 }
1589 };
1590
1591 static ConfigDriver rwm_cf_gen;
1592
1593 static ConfigTable rwmcfg[] = {
1594         { "rwm-rewrite", "rewrite",
1595                 2, 0, STRLENOF("rwm-rewrite"),
1596                 ARG_MAGIC|ARG_QUOTE|RWM_CF_REWRITE, rwm_cf_gen,
1597                 "( OLcfgOvAt:16.1 NAME 'olcRwmRewrite' "
1598                         "DESC 'Rewrites strings' "
1599                         "EQUALITY caseIgnoreMatch "
1600                         "SYNTAX OMsDirectoryString "
1601                         "X-ORDERED 'VALUES' )",
1602                 NULL, NULL },
1603
1604         { "rwm-suffixmassage", "[virtual]> <real",
1605                 2, 3, 0, ARG_MAGIC|RWM_CF_SUFFIXMASSAGE, rwm_cf_gen,
1606                 NULL, NULL, NULL },
1607
1608         { "rwm-t-f-support", "true|false|discover",
1609                 2, 2, 0, ARG_MAGIC|RWM_CF_T_F_SUPPORT, rwm_cf_gen,
1610                 "( OLcfgOvAt:16.2 NAME 'olcRwmTFSupport' "
1611                         "DESC 'Absolute filters support' "
1612                         "SYNTAX OMsDirectoryString "
1613                         "SINGLE-VALUE )",
1614                 NULL, NULL },
1615
1616         { "rwm-map", "{objectClass|attribute}",
1617                 2, 4, 0, ARG_MAGIC|RWM_CF_MAP, rwm_cf_gen,
1618                 "( OLcfgOvAt:16.3 NAME 'olcRwmMap' "
1619                         "DESC 'maps attributes/objectClasses' "
1620                         "SYNTAX OMsDirectoryString "
1621                         "X-ORDERED 'VALUES' )",
1622                 NULL, NULL },
1623
1624         { "rwm-normalize-mapped-attrs", "true|false",
1625                 2, 2, 0, ARG_MAGIC|ARG_ON_OFF|RWM_CF_NORMALIZE_MAPPED, rwm_cf_gen,
1626                 "( OLcfgOvAt:16.4 NAME 'olcRwmNormalizeMapped' "
1627                         "DESC 'Normalize mapped attributes/objectClasses' "
1628                         "SYNTAX OMsBoolean "
1629                         "SINGLE-VALUE )",
1630                 NULL, NULL },
1631
1632         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
1633 };
1634
1635 static ConfigOCs rwmocs[] = {
1636         { "( OLcfgOvOc:16.1 "
1637                 "NAME 'olcRwmConfig' "
1638                 "DESC 'Rewrite/remap configuration' "
1639                 "SUP olcOverlayConfig "
1640                 "MAY ( "
1641                         "olcRwmRewrite $ "
1642                         "olcRwmTFSupport $ "
1643                         "olcRwmMap $ "
1644                         "olcRwmNormalizeMapped "
1645                         ") )",
1646                 Cft_Overlay, rwmcfg, NULL, NULL },
1647         { NULL, 0, NULL }
1648 };
1649
1650 static void
1651 slap_rewrite_unparse( BerVarray in, BerVarray *out )
1652 {
1653         int             i;
1654         BerVarray       bva = NULL;
1655         char            ibuf[32], *ptr;
1656         struct berval   idx;
1657
1658         assert( in != NULL );
1659
1660         for ( i = 0; !BER_BVISNULL( &in[i] ); i++ )
1661                 /* count'em */ ;
1662
1663         if ( i == 0 ) {
1664                 return;
1665         }
1666
1667         idx.bv_val = ibuf;
1668
1669         bva = ch_malloc( ( i + 1 ) * sizeof(struct berval) );
1670         BER_BVZERO( &bva[ 0 ] );
1671
1672         for ( i = 0; !BER_BVISNULL( &in[i] ); i++ ) {
1673                 idx.bv_len = snprintf( idx.bv_val, sizeof( ibuf ), "{%d}", i );
1674                 if ( idx.bv_len >= sizeof( ibuf ) ) {
1675                         ber_bvarray_free( bva );
1676                         return;
1677                 }
1678
1679                 bva[i].bv_len = idx.bv_len + in[i].bv_len;
1680                 bva[i].bv_val = ch_malloc( bva[i].bv_len + 1 );
1681                 ptr = lutil_strcopy( bva[i].bv_val, ibuf );
1682                 ptr = lutil_strcopy( ptr, in[i].bv_val );
1683                 *ptr = '\0';
1684                 BER_BVZERO( &bva[ i + 1 ] );
1685         }
1686
1687         *out = bva;
1688 }
1689
1690 static int
1691 rwm_cf_gen( ConfigArgs *c )
1692 {
1693         slap_overinst           *on = (slap_overinst *)c->bi;
1694         struct ldaprwmap        *rwmap =
1695                         (struct ldaprwmap *)on->on_bi.bi_private;
1696
1697         BackendDB               db;
1698         char                    *argv0;
1699         int                     rc = 0;
1700
1701         db = *c->be;
1702         db.bd_info = c->bi;
1703
1704         if ( c->op == SLAP_CONFIG_EMIT ) {
1705                 struct berval   bv = BER_BVNULL;
1706
1707                 switch ( c->type ) {
1708                 case RWM_CF_REWRITE:
1709                         slap_rewrite_unparse( rwmap->rwm_bva_rewrite, &c->rvalue_vals );
1710                         if ( !c->rvalue_vals ) rc = 1;
1711                         break;
1712
1713                 case RWM_CF_T_F_SUPPORT:
1714                         enum_to_verb( t_f_mode, (rwmap->rwm_flags & RWM_F_SUPPORT_T_F_MASK2), &bv );
1715                         if ( BER_BVISNULL( &bv ) ) {
1716                                 /* there's something wrong... */
1717                                 assert( 0 );
1718                                 rc = 1;
1719
1720                         } else {
1721                                 value_add_one( &c->rvalue_vals, &bv );
1722                         }
1723                         break;
1724
1725                 case RWM_CF_MAP:
1726                         if ( rwmap->rwm_bva_map == NULL ) {
1727                                 rc = 1;
1728
1729                         } else {
1730                                 value_add( &c->rvalue_vals, rwmap->rwm_bva_map );
1731                         }
1732                         break;
1733
1734                 case RWM_CF_NORMALIZE_MAPPED:
1735                         c->value_int = ( rwmap->rwm_flags & RWM_F_NORMALIZE_MAPPED_ATTRS );
1736                         break;
1737
1738                 default:
1739                         assert( 0 );
1740                         rc = 1;
1741                 }
1742
1743                 return rc;
1744
1745         } else if ( c->op == LDAP_MOD_DELETE ) {
1746                 switch ( c->type ) {
1747                 case RWM_CF_REWRITE:
1748                         if ( c->valx >= 0 ) {
1749                                 /* single modification is not allowed */
1750                                 rc = 1;
1751
1752                         } else {
1753                                 rewrite_info_delete( &rwmap->rwm_rw );
1754
1755                                 ber_bvarray_free( rwmap->rwm_bva_rewrite );
1756                                 rwmap->rwm_bva_rewrite = NULL;
1757                         }
1758                         break;
1759
1760                 case RWM_CF_T_F_SUPPORT:
1761                         rwmap->rwm_flags &= ~RWM_F_SUPPORT_T_F_MASK2;
1762                         break;
1763
1764                 case RWM_CF_MAP:
1765                         if ( c->valx >= 0 ) {
1766                                 /* single modification is not allowed */
1767                                 rc = 1;
1768
1769                         } else {
1770                                 avl_free( rwmap->rwm_oc.remap, rwm_mapping_dst_free );
1771                                 avl_free( rwmap->rwm_oc.map, rwm_mapping_free );
1772                                 avl_free( rwmap->rwm_at.remap, rwm_mapping_dst_free );
1773                                 avl_free( rwmap->rwm_at.map, rwm_mapping_free );
1774
1775                                 rwmap->rwm_oc.remap = NULL;
1776                                 rwmap->rwm_oc.map = NULL;
1777                                 rwmap->rwm_at.remap = NULL;
1778                                 rwmap->rwm_at.map = NULL;
1779
1780                                 ber_bvarray_free( rwmap->rwm_bva_map );
1781                                 rwmap->rwm_bva_map = NULL;
1782                         }
1783                         break;
1784
1785                 case RWM_CF_NORMALIZE_MAPPED:
1786                         rwmap->rwm_flags &= ~RWM_F_NORMALIZE_MAPPED_ATTRS;
1787                         break;
1788
1789                 default:
1790                         return 1;
1791                 }
1792                 return rc;
1793         }
1794
1795         switch ( c->type ) {
1796         case RWM_CF_REWRITE:
1797                 argv0 = c->argv[ 0 ];
1798                 c->argv[ 0 ] += STRLENOF( "rwm-" );
1799                 rc = rwm_rw_config( &db, c->fname, c->lineno, c->argc, c->argv );
1800                 c->argv[ 0 ] = argv0;
1801                 if ( rc ) {
1802                         return 1;
1803
1804                 } else {
1805                         char            *line;
1806                         struct berval   bv;
1807
1808                         line = ldap_charray2str( c->argv, "\" \"" );
1809                         if ( line != NULL ) {
1810                                 int     len = strlen( c->argv[ 0 ] );
1811
1812                                 ber_str2bv( line, 0, 0, &bv );
1813                                 AC_MEMCPY( &bv.bv_val[ len ], &bv.bv_val[ len + 1 ],
1814                                         bv.bv_len - ( len + 1 ) );
1815                                 bv.bv_val[ bv.bv_len - 1 ] = '"';
1816                                 ber_bvarray_add( &rwmap->rwm_bva_rewrite, &bv );
1817                         }
1818                 }
1819                 break;
1820
1821         case RWM_CF_SUFFIXMASSAGE:
1822                 argv0 = c->argv[ 0 ];
1823                 c->argv[ 0 ] += STRLENOF( "rwm-" );
1824                 rc = rwm_suffixmassage_config( &db, c->fname, c->lineno, c->argc, c->argv );
1825                 c->argv[ 0 ] = argv0;
1826                 if ( rc ) {
1827                         return 1;
1828
1829                 } else {
1830                         char            *line;
1831                         struct berval   bv;
1832
1833                         /* FIXME: not optimal; in fact, this keeps track
1834                          * of the fact that a set of rules was added
1835                          * using the rwm-suffixmassage shortcut, but the
1836                          * rules are not clarified */
1837
1838                         line = ldap_charray2str( c->argv, "\" \"" );
1839                         if ( line != NULL ) {
1840                                 int     len = strlen( c->argv[ 0 ] );
1841
1842                                 ber_str2bv( line, 0, 0, &bv );
1843                                 AC_MEMCPY( &bv.bv_val[ len ], &bv.bv_val[ len + 1 ],
1844                                         bv.bv_len - ( len + 1 ) );
1845                                 bv.bv_val[ bv.bv_len - 1 ] = '"';
1846                                 ber_bvarray_add( &rwmap->rwm_bva_rewrite, &bv );
1847                         }
1848                 }
1849                 break;
1850
1851         case RWM_CF_T_F_SUPPORT:
1852                 rc = verb_to_mask( c->argv[ 1 ], t_f_mode );
1853                 if ( BER_BVISNULL( &t_f_mode[ rc ].word ) ) {
1854                         return 1;
1855                 }
1856
1857                 rwmap->rwm_flags &= ~RWM_F_SUPPORT_T_F_MASK2;
1858                 rwmap->rwm_flags |= t_f_mode[ rc ].mask;
1859                 rc = 0;
1860                 break;
1861
1862         case RWM_CF_MAP:
1863                 argv0 = c->argv[ 0 ];
1864                 c->argv[ 0 ] += STRLENOF( "rwm-" );
1865                 rc = rwm_m_config( &db, c->fname, c->lineno, c->argc, c->argv );
1866                 c->argv[ 0 ] = argv0;
1867                 if ( rc ) {
1868                         return 1;
1869
1870                 } else {
1871                         char            *line;
1872                         struct berval   bv;
1873
1874                         line = ldap_charray2str( &c->argv[ 1 ], " " );
1875                         if ( line != NULL ) {
1876                                 ber_str2bv( line, 0, 0, &bv );
1877                                 ber_bvarray_add( &rwmap->rwm_bva_map, &bv );
1878                         }
1879                 }
1880                 break;
1881
1882         case RWM_CF_NORMALIZE_MAPPED:
1883                 if ( c->value_int ) {
1884                         rwmap->rwm_flags |= RWM_F_NORMALIZE_MAPPED_ATTRS;
1885                 } else {
1886                         rwmap->rwm_flags &= ~RWM_F_NORMALIZE_MAPPED_ATTRS;
1887                 }
1888                 break;
1889
1890         default:
1891                 assert( 0 );
1892                 return 1;
1893         }
1894
1895         return rc;
1896 }
1897
1898
1899
1900
1901
1902
1903
1904 static int
1905 rwm_db_init(
1906         BackendDB       *be,
1907         ConfigReply     *cr )
1908 {
1909         slap_overinst           *on = (slap_overinst *) be->bd_info;
1910         struct ldaprwmap        *rwmap;
1911         char                    *rargv[ 3 ];
1912         int                     rc = 0;
1913
1914         rwmap = (struct ldaprwmap *)ch_calloc( 1, sizeof( struct ldaprwmap ) );
1915
1916         rwmap->rwm_rw = rewrite_info_init( REWRITE_MODE_USE_DEFAULT );
1917         if ( rwmap->rwm_rw == NULL ) {
1918                 rc = -1;
1919                 goto error_return;
1920         }
1921
1922         /* this rewriteContext by default must be null;
1923          * rules can be added if required */
1924         rargv[ 0 ] = "rewriteContext";
1925         rargv[ 1 ] = "searchFilter";
1926         rargv[ 2 ] = NULL;
1927         rewrite_parse( rwmap->rwm_rw, "<suffix massage>", 1, 2, rargv );
1928
1929         rargv[ 0 ] = "rewriteContext";
1930         rargv[ 1 ] = "default";
1931         rargv[ 2 ] = NULL;
1932         rewrite_parse( rwmap->rwm_rw, "<suffix massage>", 2, 2, rargv );
1933
1934 error_return:;
1935         on->on_bi.bi_private = (void *)rwmap;
1936
1937         if ( rc ) {
1938                 (void)rwm_db_destroy( be, NULL );
1939         }
1940
1941         return rc;
1942 }
1943
1944 static int
1945 rwm_db_destroy(
1946         BackendDB       *be,
1947         ConfigReply     *cr )
1948 {
1949         slap_overinst   *on = (slap_overinst *) be->bd_info;
1950         int             rc = 0;
1951
1952         if ( on->on_bi.bi_private ) {
1953                 struct ldaprwmap        *rwmap =
1954                         (struct ldaprwmap *)on->on_bi.bi_private;
1955
1956                 if ( rwmap->rwm_rw ) {
1957                         rewrite_info_delete( &rwmap->rwm_rw );
1958                         ber_bvarray_free( rwmap->rwm_bva_rewrite );
1959                 }
1960
1961                 avl_free( rwmap->rwm_oc.remap, rwm_mapping_dst_free );
1962                 avl_free( rwmap->rwm_oc.map, rwm_mapping_free );
1963                 avl_free( rwmap->rwm_at.remap, rwm_mapping_dst_free );
1964                 avl_free( rwmap->rwm_at.map, rwm_mapping_free );
1965                 ber_bvarray_free( rwmap->rwm_bva_map );
1966
1967                 ch_free( rwmap );
1968         }
1969
1970         return rc;
1971 }
1972
1973 static slap_overinst rwm = { { NULL } };
1974
1975 #if SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC
1976 static
1977 #endif /* SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC */
1978 int
1979 rwm_initialize( void )
1980 {
1981         int             rc;
1982
1983         /* Make sure we don't exceed the bits reserved for userland */
1984         config_check_userland( RWM_CF_LAST );
1985
1986         memset( &rwm, 0, sizeof( slap_overinst ) );
1987
1988         rwm.on_bi.bi_type = "rwm";
1989         rwm.on_bi.bi_flags =
1990                 SLAPO_BFLAG_SINGLE |
1991                 0;
1992
1993         rwm.on_bi.bi_db_init = rwm_db_init;
1994         rwm.on_bi.bi_db_config = rwm_db_config;
1995         rwm.on_bi.bi_db_destroy = rwm_db_destroy;
1996
1997         rwm.on_bi.bi_op_bind = rwm_op_bind;
1998         rwm.on_bi.bi_op_search = rwm_op_search;
1999         rwm.on_bi.bi_op_compare = rwm_op_compare;
2000         rwm.on_bi.bi_op_modify = rwm_op_modify;
2001         rwm.on_bi.bi_op_modrdn = rwm_op_modrdn;
2002         rwm.on_bi.bi_op_add = rwm_op_add;
2003         rwm.on_bi.bi_op_delete = rwm_op_delete;
2004         rwm.on_bi.bi_op_unbind = rwm_op_unbind;
2005         rwm.on_bi.bi_extended = rwm_extended;
2006
2007         rwm.on_bi.bi_operational = rwm_operational;
2008         rwm.on_bi.bi_chk_referrals = 0 /* rwm_chk_referrals */ ;
2009
2010         rwm.on_bi.bi_connection_init = rwm_conn_init;
2011         rwm.on_bi.bi_connection_destroy = rwm_conn_destroy;
2012
2013         rwm.on_response = rwm_response;
2014
2015         rwm.on_bi.bi_cf_ocs = rwmocs;
2016
2017         rc = config_register_schema( rwmcfg, rwmocs );
2018         if ( rc ) {
2019                 return rc;
2020         }
2021
2022         return overlay_register( &rwm );
2023 }
2024
2025 #if SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC
2026 int
2027 init_module( int argc, char *argv[] )
2028 {
2029         return rwm_initialize();
2030 }
2031 #endif /* SLAPD_OVER_RWM == SLAPD_MOD_DYNAMIC */
2032
2033 #endif /* SLAPD_OVER_RWM */