git.sur5r.net Git - openldap/blob - servers/slapd/overlays/rwmmap.c

   1 /* rwmmap.c - rewrite/mapping routines */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1999-2014 The OpenLDAP Foundation.
   6  * Portions Copyright 1999-2003 Howard Chu.
   7  * Portions Copyright 2000-2003 Pierangelo Masarati.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted only as authorized by the OpenLDAP
  12  * Public License.
  13  *
  14  * A copy of this license is available in the file LICENSE in the
  15  * top-level directory of the distribution or, alternatively, at
  16  * <http://www.OpenLDAP.org/license.html>.
  17  */
  18 /* ACKNOWLEDGEMENTS:
  19  * This work was initially developed by the Howard Chu for inclusion
  20  * in OpenLDAP Software and subsequently enhanced by Pierangelo
  21  * Masarati.
  22  */
  23
  24 #include "portable.h"
  25
  26 #ifdef SLAPD_OVER_RWM
  27
  28 #include <stdio.h>
  29
  30 #include <ac/string.h>
  31 #include <ac/socket.h>
  32
  33 #include "slap.h"
  34 #include "rwm.h"
  35
  36 #undef ldap_debug       /* silence a warning in ldap-int.h */
  37 #include "../../../libraries/libldap/ldap-int.h"
  38
  39 int
  40 rwm_mapping_cmp( const void *c1, const void *c2 )
  41 {
  42         struct ldapmapping *map1 = (struct ldapmapping *)c1;
  43         struct ldapmapping *map2 = (struct ldapmapping *)c2;
  44         int rc = map1->m_src.bv_len - map2->m_src.bv_len;
  45
  46         if ( rc ) {
  47                 return rc;
  48         }
  49
  50         return strcasecmp( map1->m_src.bv_val, map2->m_src.bv_val );
  51 }
  52
  53 int
  54 rwm_mapping_dup( void *c1, void *c2 )
  55 {
  56         struct ldapmapping *map1 = (struct ldapmapping *)c1;
  57         struct ldapmapping *map2 = (struct ldapmapping *)c2;
  58         int rc = map1->m_src.bv_len - map2->m_src.bv_len;
  59
  60         if ( rc ) {
  61                 return 0;
  62         }
  63
  64         return ( ( strcasecmp( map1->m_src.bv_val, map2->m_src.bv_val ) == 0 ) ? -1 : 0 );
  65 }
  66
  67 int
  68 rwm_map_init( struct ldapmap *lm, struct ldapmapping **m )
  69 {
  70         struct ldapmapping      *mapping;
  71         const char              *text;
  72         int                     rc;
  73
  74         assert( m != NULL );
  75
  76         *m = NULL;
  77
  78         mapping = (struct ldapmapping *)ch_calloc( 2,
  79                         sizeof( struct ldapmapping ) );
  80         if ( mapping == NULL ) {
  81                 return LDAP_NO_MEMORY;
  82         }
  83
  84         /* NOTE: this is needed to make sure that
  85          *      rwm-map attribute *
  86          * does not  filter out all attributes including objectClass */
  87         rc = slap_str2ad( "objectClass", &mapping[0].m_src_ad, &text );
  88         if ( rc != LDAP_SUCCESS ) {
  89                 ch_free( mapping );
  90                 return rc;
  91         }
  92
  93         mapping[0].m_dst_ad = mapping[0].m_src_ad;
  94         ber_dupbv( &mapping[0].m_src, &mapping[0].m_src_ad->ad_cname );
  95         ber_dupbv( &mapping[0].m_dst, &mapping[0].m_src );
  96
  97         mapping[1].m_src = mapping[0].m_src;
  98         mapping[1].m_dst = mapping[0].m_dst;
  99         mapping[1].m_src_ad = mapping[0].m_src_ad;
 100         mapping[1].m_dst_ad = mapping[1].m_src_ad;
 101
 102         avl_insert( &lm->map, (caddr_t)&mapping[0],
 103                         rwm_mapping_cmp, rwm_mapping_dup );
 104         avl_insert( &lm->remap, (caddr_t)&mapping[1],
 105                         rwm_mapping_cmp, rwm_mapping_dup );
 106
 107         *m = mapping;
 108
 109         return rc;
 110 }
 111
 112 int
 113 rwm_mapping( struct ldapmap *map, struct berval *s, struct ldapmapping **m, int remap )
 114 {
 115         Avlnode *tree;
 116         struct ldapmapping fmapping;
 117
 118         if ( map == NULL ) {
 119                 return 0;
 120         }
 121
 122         assert( m != NULL );
 123
 124         /* let special attrnames slip through (ITS#5760) */
 125         if ( bvmatch( s, slap_bv_no_attrs )
 126                 || bvmatch( s, slap_bv_all_user_attrs )
 127                 || bvmatch( s, slap_bv_all_operational_attrs ) )
 128         {
 129                 *m = NULL;
 130                 return 0;
 131         }
 132
 133         if ( remap == RWM_REMAP ) {
 134                 tree = map->remap;
 135
 136         } else {
 137                 tree = map->map;
 138         }
 139
 140         fmapping.m_src = *s;
 141         *m = (struct ldapmapping *)avl_find( tree, (caddr_t)&fmapping,
 142                         rwm_mapping_cmp );
 143
 144         if ( *m == NULL ) {
 145                 return map->drop_missing;
 146         }
 147
 148         return 0;
 149 }
 150
 151 void
 152 rwm_map( struct ldapmap *map, struct berval *s, struct berval *bv, int remap )
 153 {
 154         struct ldapmapping *mapping;
 155
 156         /* map->map may be NULL when mapping is configured,
 157          * but map->remap can't */
 158         if ( map->remap == NULL ) {
 159                 *bv = *s;
 160                 return;
 161         }
 162
 163         BER_BVZERO( bv );
 164         ( void )rwm_mapping( map, s, &mapping, remap );
 165         if ( mapping != NULL ) {
 166                 if ( !BER_BVISNULL( &mapping->m_dst ) ) {
 167                         *bv = mapping->m_dst;
 168                 }
 169                 return;
 170         }
 171
 172         if ( !map->drop_missing ) {
 173                 *bv = *s;
 174         }
 175 }
 176
 177 /*
 178  * Map attribute names in place
 179  */
 180 int
 181 rwm_map_attrnames(
 182         Operation       *op,
 183         struct ldapmap  *at_map,
 184         struct ldapmap  *oc_map,
 185         AttributeName   *an,
 186         AttributeName   **anp,
 187         int             remap )
 188 {
 189         int             i, j, x;
 190
 191         assert( anp != NULL );
 192
 193         *anp = NULL;
 194
 195         if ( an == NULL && op->o_bd->be_extra_anlist == NULL ) {
 196                 return LDAP_SUCCESS;
 197         }
 198
 199         i = 0;
 200         if ( an != NULL ) {
 201                 for ( i = 0; !BER_BVISNULL( &an[i].an_name ); i++ )
 202                         /* just count */ ;
 203         }
 204
 205         x = 0;
 206         if ( op->o_bd->be_extra_anlist ) {
 207                 for ( ; !BER_BVISNULL( &op->o_bd->be_extra_anlist[x].an_name ); x++ )
 208                         /* just count */ ;
 209         }
 210
 211         assert( i > 0 || x > 0 );
 212         *anp = op->o_tmpcalloc( ( i + x + 1 ), sizeof( AttributeName ),
 213                 op->o_tmpmemctx );
 214         if ( *anp == NULL ) {
 215                 return LDAP_NO_MEMORY;
 216         }
 217
 218         if ( an != NULL ) {
 219         for ( i = 0, j = 0; !BER_BVISNULL( &an[i].an_name ); i++ ) {
 220                 struct ldapmapping      *m;
 221                 int                     at_drop_missing = 0,
 222                                         oc_drop_missing = 0;
 223
 224                 if ( an[i].an_desc ) {
 225                         if ( !at_map ) {
 226                                 /* FIXME: better leave as is? */
 227                                 continue;
 228                         }
 229
 230                         at_drop_missing = rwm_mapping( at_map, &an[i].an_name, &m, remap );
 231                         if ( at_drop_missing || ( m && BER_BVISNULL( &m->m_dst ) ) ) {
 232                                 continue;
 233                         }
 234
 235                         if ( !m ) {
 236                                 (*anp)[j] = an[i];
 237                                 j++;
 238                                 continue;
 239                         }
 240
 241                         (*anp)[j] = an[i];
 242                         if ( remap == RWM_MAP ) {
 243                                 (*anp)[j].an_name = m->m_dst;
 244                                 (*anp)[j].an_desc = m->m_dst_ad;
 245                         } else {
 246                                 (*anp)[j].an_name = m->m_src;
 247                                 (*anp)[j].an_desc = m->m_src_ad;
 248
 249                         }
 250
 251                         j++;
 252                         continue;
 253
 254                 } else if ( an[i].an_oc ) {
 255                         if ( !oc_map ) {
 256                                 /* FIXME: better leave as is? */
 257                                 continue;
 258                         }
 259
 260                         oc_drop_missing = rwm_mapping( oc_map, &an[i].an_name, &m, remap );
 261
 262                         if ( oc_drop_missing || ( m && BER_BVISNULL( &m->m_dst ) ) ) {
 263                                 continue;
 264                         }
 265
 266                         if ( !m ) {
 267                                 (*anp)[j] = an[i];
 268                                 j++;
 269                                 continue;
 270                         }
 271
 272                         (*anp)[j] = an[i];
 273                         if ( remap == RWM_MAP ) {
 274                                 (*anp)[j].an_name = m->m_dst;
 275                                 (*anp)[j].an_oc = m->m_dst_oc;
 276                         } else {
 277                                 (*anp)[j].an_name = m->m_src;
 278                                 (*anp)[j].an_oc = m->m_src_oc;
 279                         }
 280
 281                 } else {
 282                         at_drop_missing = rwm_mapping( at_map, &an[i].an_name, &m, remap );
 283
 284                         if ( at_drop_missing || !m ) {
 285                                 oc_drop_missing = rwm_mapping( oc_map, &an[i].an_name, &m, remap );
 286
 287                                 /* if both at_map and oc_map required to drop missing,
 288                                  * then do it */
 289                                 if ( oc_drop_missing && at_drop_missing ) {
 290                                         continue;
 291                                 }
 292
 293                                 /* if no oc_map mapping was found and at_map required
 294                                  * to drop missing, then do it; otherwise, at_map wins
 295                                  * and an is considered an attr and is left unchanged */
 296                                 if ( !m ) {
 297                                         if ( at_drop_missing ) {
 298                                                 continue;
 299                                         }
 300                                         (*anp)[j] = an[i];
 301                                         j++;
 302                                         continue;
 303                                 }
 304
 305                                 if ( BER_BVISNULL( &m->m_dst ) ) {
 306                                         continue;
 307                                 }
 308
 309                                 (*anp)[j] = an[i];
 310                                 if ( remap == RWM_MAP ) {
 311                                         (*anp)[j].an_name = m->m_dst;
 312                                         (*anp)[j].an_oc = m->m_dst_oc;
 313                                 } else {
 314                                         (*anp)[j].an_name = m->m_src;
 315                                         (*anp)[j].an_oc = m->m_src_oc;
 316                                 }
 317                                 j++;
 318                                 continue;
 319                         }
 320
 321                         if ( !BER_BVISNULL( &m->m_dst ) ) {
 322                                 (*anp)[j] = an[i];
 323                                 if ( remap == RWM_MAP ) {
 324                                         (*anp)[j].an_name = m->m_dst;
 325                                         (*anp)[j].an_desc = m->m_dst_ad;
 326                                 } else {
 327                                         (*anp)[j].an_name = m->m_src;
 328                                         (*anp)[j].an_desc = m->m_src_ad;
 329                                 }
 330                                 j++;
 331                                 continue;
 332                         }
 333                 }
 334         }
 335         }
 336
 337         if ( op->o_bd->be_extra_anlist != NULL ) {
 338                 /* we assume be_extra_anlist are already mapped */
 339                 for ( x = 0; !BER_BVISNULL( &op->o_bd->be_extra_anlist[x].an_name ); x++ ) {
 340                         BER_BVZERO( &(*anp)[j].an_name );
 341                         if ( op->o_bd->be_extra_anlist[x].an_desc &&
 342                                 ad_inlist( op->o_bd->be_extra_anlist[x].an_desc, *anp ) )
 343                         {
 344                                 continue;
 345                         }
 346
 347                         (*anp)[j] = op->o_bd->be_extra_anlist[x];
 348                         j++;
 349                 }
 350         }
 351
 352         if ( j == 0 && ( i != 0 || x != 0 ) ) {
 353                 memset( &(*anp)[0], 0, sizeof( AttributeName ) );
 354                 (*anp)[0].an_name = *slap_bv_no_attrs;
 355                 j = 1;
 356         }
 357         memset( &(*anp)[j], 0, sizeof( AttributeName ) );
 358
 359         return LDAP_SUCCESS;
 360 }
 361
 362 #if 0 /* unused! */
 363 int
 364 rwm_map_attrs(
 365         struct ldapmap  *at_map,
 366         AttributeName   *an,
 367         int             remap,
 368         char            ***mapped_attrs )
 369 {
 370         int i, j;
 371         char **na;
 372
 373         if ( an == NULL ) {
 374                 *mapped_attrs = NULL;
 375                 return LDAP_SUCCESS;
 376         }
 377
 378         for ( i = 0; !BER_BVISNULL( &an[ i ].an_name ); i++ )
 379                 /* count'em */ ;
 380
 381         na = (char **)ch_calloc( i + 1, sizeof( char * ) );
 382         if ( na == NULL ) {
 383                 *mapped_attrs = NULL;
 384                 return LDAP_NO_MEMORY;
 385         }
 386
 387         for ( i = j = 0; !BER_BVISNULL( &an[i].an_name ); i++ ) {
 388                 struct ldapmapping      *mapping;
 389
 390                 if ( rwm_mapping( at_map, &an[i].an_name, &mapping, remap ) ) {
 391                         continue;
 392                 }
 393
 394                 if ( !mapping ) {
 395                         na[ j++ ] = an[ i ].an_name.bv_val;
 396
 397                 } else if ( !BER_BVISNULL( &mapping->m_dst ) ) {
 398                         na[ j++ ] = mapping->m_dst.bv_val;
 399                 }
 400         }
 401
 402         if ( j == 0 && i != 0 ) {
 403                 na[ j++ ] = LDAP_NO_ATTRS;
 404         }
 405
 406         na[ j ] = NULL;
 407
 408         *mapped_attrs = na;
 409
 410         return LDAP_SUCCESS;
 411 }
 412 #endif
 413
 414 static int
 415 map_attr_value(
 416         dncookie                *dc,
 417         AttributeDescription    **adp,
 418         struct berval           *mapped_attr,
 419         struct berval           *value,
 420         struct berval           *mapped_value,
 421         int                     remap,
 422         void                    *memctx )
 423 {
 424         struct berval           vtmp = BER_BVNULL;
 425         int                     freeval = 0;
 426         AttributeDescription    *ad = *adp;
 427         struct ldapmapping      *mapping = NULL;
 428
 429         rwm_mapping( &dc->rwmap->rwm_at, &ad->ad_cname, &mapping, remap );
 430         if ( mapping == NULL ) {
 431                 if ( dc->rwmap->rwm_at.drop_missing ) {
 432                         return -1;
 433                 }
 434
 435                 *mapped_attr = ad->ad_cname;
 436
 437         } else {
 438                 *mapped_attr = mapping->m_dst;
 439         }
 440
 441         if ( value != NULL ) {
 442                 assert( mapped_value != NULL );
 443
 444                 if ( ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 445                                 || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 446                 {
 447                         dncookie        fdc = *dc;
 448                         int             rc;
 449
 450                         fdc.ctx = "searchFilterAttrDN";
 451
 452                         vtmp = *value;
 453                         rc = rwm_dn_massage_normalize( &fdc, value, &vtmp );
 454                         switch ( rc ) {
 455                         case LDAP_SUCCESS:
 456                                 if ( vtmp.bv_val != value->bv_val ) {
 457                                         freeval = 1;
 458                                 }
 459                                 break;
 460
 461                         case LDAP_UNWILLING_TO_PERFORM:
 462                         case LDAP_OTHER:
 463                         default:
 464                                 return -1;
 465                         }
 466
 467                 } else if ( ad->ad_type->sat_equality &&
 468                         ( ad->ad_type->sat_equality->smr_usage & SLAP_MR_MUTATION_NORMALIZER ) )
 469                 {
 470                         if ( ad->ad_type->sat_equality->smr_normalize(
 471                                 (SLAP_MR_DENORMALIZE|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX),
 472                                 NULL, NULL, value, &vtmp, memctx ) )
 473                         {
 474                                 return -1;
 475                         }
 476                         freeval = 2;
 477
 478                 } else if ( ad == slap_schema.si_ad_objectClass
 479                                 || ad == slap_schema.si_ad_structuralObjectClass )
 480                 {
 481                         rwm_map( &dc->rwmap->rwm_oc, value, &vtmp, remap );
 482                         if ( BER_BVISNULL( &vtmp ) || BER_BVISEMPTY( &vtmp ) ) {
 483                                 vtmp = *value;
 484                         }
 485
 486                 } else {
 487                         vtmp = *value;
 488                 }
 489
 490                 filter_escape_value_x( &vtmp, mapped_value, memctx );
 491
 492                 switch ( freeval ) {
 493                 case 1:
 494                         ch_free( vtmp.bv_val );
 495                         break;
 496
 497                 case 2:
 498                         ber_memfree_x( vtmp.bv_val, memctx );
 499                         break;
 500                 }
 501         }
 502
 503         if ( mapping != NULL ) {
 504                 assert( mapping->m_dst_ad != NULL );
 505                 *adp = mapping->m_dst_ad;
 506         }
 507
 508         return 0;
 509 }
 510
 511 static int
 512 rwm_int_filter_map_rewrite(
 513         Operation               *op,
 514         dncookie                *dc,
 515         Filter                  *f,
 516         struct berval           *fstr )
 517 {
 518         int             i;
 519         Filter          *p;
 520         AttributeDescription *ad;
 521         struct berval   atmp,
 522                         vtmp,
 523                         *tmp;
 524         static struct berval
 525                         /* better than nothing... */
 526                         ber_bvfalse = BER_BVC( "(!(objectClass=*))" ),
 527                         ber_bvtf_false = BER_BVC( "(|)" ),
 528                         /* better than nothing... */
 529                         ber_bvtrue = BER_BVC( "(objectClass=*)" ),
 530                         ber_bvtf_true = BER_BVC( "(&)" ),
 531 #if 0
 532                         /* no longer needed; preserved for completeness */
 533                         ber_bvundefined = BER_BVC( "(?=undefined)" ),
 534 #endif
 535                         ber_bverror = BER_BVC( "(?=error)" ),
 536                         ber_bvunknown = BER_BVC( "(?=unknown)" ),
 537                         ber_bvnone = BER_BVC( "(?=none)" );
 538         ber_len_t       len;
 539
 540         assert( fstr != NULL );
 541         BER_BVZERO( fstr );
 542
 543         if ( f == NULL ) {
 544                 ber_dupbv_x( fstr, &ber_bvnone, op->o_tmpmemctx );
 545                 return LDAP_OTHER;
 546         }
 547
 548 #if 0
 549         /* ITS#6814: give the caller a chance to use undefined filters */
 550         if ( f->f_choice & SLAPD_FILTER_UNDEFINED ) {
 551                 goto computed;
 552         }
 553 #endif
 554
 555         switch ( f->f_choice & SLAPD_FILTER_MASK ) {
 556         case LDAP_FILTER_EQUALITY:
 557                 ad = f->f_av_desc;
 558                 if ( map_attr_value( dc, &ad, &atmp,
 559                         &f->f_av_value, &vtmp, RWM_MAP, op->o_tmpmemctx ) )
 560                 {
 561                         goto computed;
 562                 }
 563
 564                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(=)" );
 565                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
 566
 567                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=%s)",
 568                         atmp.bv_val, vtmp.bv_len ? vtmp.bv_val : "" );
 569
 570                 op->o_tmpfree( vtmp.bv_val, op->o_tmpmemctx );
 571                 break;
 572
 573         case LDAP_FILTER_GE:
 574                 ad = f->f_av_desc;
 575                 if ( map_attr_value( dc, &ad, &atmp,
 576                         &f->f_av_value, &vtmp, RWM_MAP, op->o_tmpmemctx ) )
 577                 {
 578                         goto computed;
 579                 }
 580
 581                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(>=)" );
 582                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
 583
 584                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s>=%s)",
 585                         atmp.bv_val, vtmp.bv_len ? vtmp.bv_val : "" );
 586
 587                 op->o_tmpfree( vtmp.bv_val, op->o_tmpmemctx );
 588                 break;
 589
 590         case LDAP_FILTER_LE:
 591                 ad = f->f_av_desc;
 592                 if ( map_attr_value( dc, &ad, &atmp,
 593                         &f->f_av_value, &vtmp, RWM_MAP, op->o_tmpmemctx ) )
 594                 {
 595                         goto computed;
 596                 }
 597
 598                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(<=)" );
 599                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
 600
 601                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s<=%s)",
 602                         atmp.bv_val, vtmp.bv_len ? vtmp.bv_val : "" );
 603
 604                 op->o_tmpfree( vtmp.bv_val, op->o_tmpmemctx );
 605                 break;
 606
 607         case LDAP_FILTER_APPROX:
 608                 ad = f->f_av_desc;
 609                 if ( map_attr_value( dc, &ad, &atmp,
 610                         &f->f_av_value, &vtmp, RWM_MAP, op->o_tmpmemctx ) )
 611                 {
 612                         goto computed;
 613                 }
 614
 615                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(~=)" );
 616                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
 617
 618                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s~=%s)",
 619                         atmp.bv_val, vtmp.bv_len ? vtmp.bv_val : "" );
 620
 621                 op->o_tmpfree( vtmp.bv_val, op->o_tmpmemctx );
 622                 break;
 623
 624         case LDAP_FILTER_SUBSTRINGS:
 625                 ad = f->f_sub_desc;
 626                 if ( map_attr_value( dc, &ad, &atmp,
 627                         NULL, NULL, RWM_MAP, op->o_tmpmemctx ) )
 628                 {
 629                         goto computed;
 630                 }
 631
 632                 /* cannot be a DN ... */
 633
 634                 fstr->bv_len = atmp.bv_len + STRLENOF( "(=*)" );
 635                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 128, op->o_tmpmemctx );
 636
 637                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
 638                         atmp.bv_val );
 639
 640                 if ( !BER_BVISNULL( &f->f_sub_initial ) ) {
 641                         len = fstr->bv_len;
 642
 643                         filter_escape_value_x( &f->f_sub_initial, &vtmp, op->o_tmpmemctx );
 644
 645                         fstr->bv_len += vtmp.bv_len;
 646                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
 647                                 op->o_tmpmemctx );
 648
 649                         snprintf( &fstr->bv_val[len - 2], vtmp.bv_len + 3,
 650                                 /* "(attr=" */ "%s*)",
 651                                 vtmp.bv_len ? vtmp.bv_val : "" );
 652
 653                         op->o_tmpfree( vtmp.bv_val, op->o_tmpmemctx );
 654                 }
 655
 656                 if ( f->f_sub_any != NULL ) {
 657                         for ( i = 0; !BER_BVISNULL( &f->f_sub_any[i] ); i++ ) {
 658                                 len = fstr->bv_len;
 659                                 filter_escape_value_x( &f->f_sub_any[i], &vtmp,
 660                                         op->o_tmpmemctx );
 661
 662                                 fstr->bv_len += vtmp.bv_len + 1;
 663                                 fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
 664                                         op->o_tmpmemctx );
 665
 666                                 snprintf( &fstr->bv_val[len - 1], vtmp.bv_len + 3,
 667                                         /* "(attr=[init]*[any*]" */ "%s*)",
 668                                         vtmp.bv_len ? vtmp.bv_val : "" );
 669                                 op->o_tmpfree( vtmp.bv_val, op->o_tmpmemctx );
 670                         }
 671                 }
 672
 673                 if ( !BER_BVISNULL( &f->f_sub_final ) ) {
 674                         len = fstr->bv_len;
 675
 676                         filter_escape_value_x( &f->f_sub_final, &vtmp, op->o_tmpmemctx );
 677
 678                         fstr->bv_len += vtmp.bv_len;
 679                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
 680                                 op->o_tmpmemctx );
 681
 682                         snprintf( &fstr->bv_val[len - 1], vtmp.bv_len + 3,
 683                                 /* "(attr=[init*][any*]" */ "%s)",
 684                                 vtmp.bv_len ? vtmp.bv_val : "" );
 685
 686                         op->o_tmpfree( vtmp.bv_val, op->o_tmpmemctx );
 687                 }
 688
 689                 break;
 690
 691         case LDAP_FILTER_PRESENT:
 692                 ad = f->f_desc;
 693                 if ( map_attr_value( dc, &ad, &atmp,
 694                         NULL, NULL, RWM_MAP, op->o_tmpmemctx ) )
 695                 {
 696                         goto computed;
 697                 }
 698
 699                 fstr->bv_len = atmp.bv_len + STRLENOF( "(=*)" );
 700                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
 701
 702                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
 703                         atmp.bv_val );
 704                 break;
 705
 706         case LDAP_FILTER_AND:
 707         case LDAP_FILTER_OR:
 708         case LDAP_FILTER_NOT:
 709                 fstr->bv_len = STRLENOF( "(%)" );
 710                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 128, op->o_tmpmemctx );
 711
 712                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%c)",
 713                         f->f_choice == LDAP_FILTER_AND ? '&' :
 714                         f->f_choice == LDAP_FILTER_OR ? '|' : '!' );
 715
 716                 for ( p = f->f_list; p != NULL; p = p->f_next ) {
 717                         int     rc;
 718
 719                         len = fstr->bv_len;
 720
 721                         rc = rwm_int_filter_map_rewrite( op, dc, p, &vtmp );
 722                         if ( rc != LDAP_SUCCESS ) {
 723                                 return rc;
 724                         }
 725
 726                         fstr->bv_len += vtmp.bv_len;
 727                         fstr->bv_val = op->o_tmprealloc( fstr->bv_val, fstr->bv_len + 1,
 728                                 op->o_tmpmemctx );
 729
 730                         snprintf( &fstr->bv_val[len-1], vtmp.bv_len + 2,
 731                                 /*"("*/ "%s)", vtmp.bv_len ? vtmp.bv_val : "" );
 732
 733                         op->o_tmpfree( vtmp.bv_val, op->o_tmpmemctx );
 734                 }
 735
 736                 break;
 737
 738         case LDAP_FILTER_EXT: {
 739                 if ( f->f_mr_desc ) {
 740                         ad = f->f_mr_desc;
 741                         if ( map_attr_value( dc, &ad, &atmp,
 742                                 &f->f_mr_value, &vtmp, RWM_MAP, op->o_tmpmemctx ) )
 743                         {
 744                                 goto computed;
 745                         }
 746
 747                 } else {
 748                         BER_BVSTR( &atmp, "" );
 749                         filter_escape_value_x( &f->f_mr_value, &vtmp, op->o_tmpmemctx );
 750                 }
 751
 752
 753                 fstr->bv_len = atmp.bv_len +
 754                         ( f->f_mr_dnattrs ? STRLENOF( ":dn" ) : 0 ) +
 755                         ( f->f_mr_rule_text.bv_len ? f->f_mr_rule_text.bv_len + 1 : 0 ) +
 756                         vtmp.bv_len + STRLENOF( "(:=)" );
 757                 fstr->bv_val = op->o_tmpalloc( fstr->bv_len + 1, op->o_tmpmemctx );
 758
 759                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s%s%s:=%s)",
 760                         atmp.bv_val,
 761                         f->f_mr_dnattrs ? ":dn" : "",
 762                         !BER_BVISEMPTY( &f->f_mr_rule_text ) ? ":" : "",
 763                         !BER_BVISEMPTY( &f->f_mr_rule_text ) ? f->f_mr_rule_text.bv_val : "",
 764                         vtmp.bv_len ? vtmp.bv_val : "" );
 765                 op->o_tmpfree( vtmp.bv_val, op->o_tmpmemctx );
 766                 break;
 767         }
 768
 769         case -1:
 770 computed:;
 771                 filter_free_x( op, f, 0 );
 772                 f->f_choice = SLAPD_FILTER_COMPUTED;
 773                 f->f_result = SLAPD_COMPARE_UNDEFINED;
 774                 /* fallthru */
 775
 776         case SLAPD_FILTER_COMPUTED:
 777                 switch ( f->f_result ) {
 778                 case LDAP_COMPARE_FALSE:
 779                 /* FIXME: treat UNDEFINED as FALSE */
 780                 case SLAPD_COMPARE_UNDEFINED:
 781                         if ( dc->rwmap->rwm_flags & RWM_F_SUPPORT_T_F ) {
 782                                 tmp = &ber_bvtf_false;
 783                                 break;
 784                         }
 785                         tmp = &ber_bvfalse;
 786                         break;
 787
 788                 case LDAP_COMPARE_TRUE:
 789                         if ( dc->rwmap->rwm_flags & RWM_F_SUPPORT_T_F ) {
 790                                 tmp = &ber_bvtf_true;
 791                                 break;
 792                         }
 793                         tmp = &ber_bvtrue;
 794                         break;
 795
 796                 default:
 797                         tmp = &ber_bverror;
 798                         break;
 799                 }
 800
 801                 ber_dupbv_x( fstr, tmp, op->o_tmpmemctx );
 802                 break;
 803
 804         default:
 805                 ber_dupbv_x( fstr, &ber_bvunknown, op->o_tmpmemctx );
 806                 break;
 807         }
 808
 809         return LDAP_SUCCESS;
 810 }
 811
 812 int
 813 rwm_filter_map_rewrite(
 814         Operation               *op,
 815         dncookie                *dc,
 816         Filter                  *f,
 817         struct berval           *fstr )
 818 {
 819         int             rc;
 820         dncookie        fdc;
 821         struct berval   ftmp;
 822
 823         rc = rwm_int_filter_map_rewrite( op, dc, f, fstr );
 824
 825         if ( rc != 0 ) {
 826                 return rc;
 827         }
 828
 829         fdc = *dc;
 830         ftmp = *fstr;
 831
 832         fdc.ctx = "searchFilter";
 833
 834         switch ( rewrite_session( fdc.rwmap->rwm_rw, fdc.ctx,
 835                                 ( !BER_BVISEMPTY( &ftmp ) ? ftmp.bv_val : "" ),
 836                                 fdc.conn, &fstr->bv_val ) )
 837         {
 838         case REWRITE_REGEXEC_OK:
 839                 if ( !BER_BVISNULL( fstr ) ) {
 840                         fstr->bv_len = strlen( fstr->bv_val );
 841
 842                 } else {
 843                         *fstr = ftmp;
 844                 }
 845
 846                 Debug( LDAP_DEBUG_ARGS,
 847                         "[rw] %s: \"%s\" -> \"%s\"\n",
 848                         fdc.ctx, ftmp.bv_val, fstr->bv_val );
 849                 if ( fstr->bv_val != ftmp.bv_val ) {
 850                         ber_bvreplace_x( &ftmp, fstr, op->o_tmpmemctx );
 851                         ch_free( fstr->bv_val );
 852                         *fstr = ftmp;
 853                 }
 854                 rc = LDAP_SUCCESS;
 855                 break;
 856
 857         case REWRITE_REGEXEC_UNWILLING:
 858                 if ( fdc.rs ) {
 859                         fdc.rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 860                         fdc.rs->sr_text = "Operation not allowed";
 861                 }
 862                 op->o_tmpfree( ftmp.bv_val, op->o_tmpmemctx );
 863                 rc = LDAP_UNWILLING_TO_PERFORM;
 864                 break;
 865
 866         case REWRITE_REGEXEC_ERR:
 867                 if ( fdc.rs ) {
 868                         fdc.rs->sr_err = LDAP_OTHER;
 869                         fdc.rs->sr_text = "Rewrite error";
 870                 }
 871                 op->o_tmpfree( ftmp.bv_val, op->o_tmpmemctx );
 872                 rc = LDAP_OTHER;
 873                 break;
 874         }
 875
 876         return rc;
 877 }
 878
 879 /*
 880  * I don't like this much, but we need two different
 881  * functions because different heap managers may be
 882  * in use in back-ldap/meta to reduce the amount of
 883  * calls to malloc routines, and some of the free()
 884  * routines may be macros with args
 885  */
 886 int
 887 rwm_referral_rewrite(
 888         Operation               *op,
 889         SlapReply               *rs,
 890         void                    *cookie,
 891         BerVarray               a_vals,
 892         BerVarray               *pa_nvals )
 893 {
 894         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 895         struct ldaprwmap        *rwmap =
 896                         (struct ldaprwmap *)on->on_bi.bi_private;
 897
 898         int                     i, last;
 899
 900         dncookie                dc;
 901         struct berval           dn = BER_BVNULL,
 902                                 ndn = BER_BVNULL;
 903
 904         assert( a_vals != NULL );
 905
 906         /*
 907          * Rewrite the dn if needed
 908          */
 909         dc.rwmap = rwmap;
 910         dc.conn = op->o_conn;
 911         dc.rs = rs;
 912         dc.ctx = (char *)cookie;
 913
 914         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ )
 915                 ;
 916         last--;
 917
 918         if ( pa_nvals != NULL ) {
 919                 if ( *pa_nvals == NULL ) {
 920                         *pa_nvals = ch_malloc( ( last + 2 ) * sizeof(struct berval) );
 921                         memset( *pa_nvals, 0, ( last + 2 ) * sizeof(struct berval) );
 922                 }
 923         }
 924
 925         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
 926                 struct berval   olddn = BER_BVNULL,
 927                                 oldval;
 928                 int             rc;
 929                 LDAPURLDesc     *ludp;
 930
 931                 oldval = a_vals[i];
 932                 rc = ldap_url_parse( oldval.bv_val, &ludp );
 933                 if ( rc != LDAP_URL_SUCCESS ) {
 934                         /* leave attr untouched if massage failed */
 935                         if ( pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
 936                                 ber_dupbv( &(*pa_nvals)[i], &oldval );
 937                         }
 938                         continue;
 939                 }
 940
 941                 /* FIXME: URLs like "ldap:///dc=suffix" if passed
 942                  * thru ldap_url_parse() and ldap_url_desc2str()
 943                  * get rewritten as "ldap:///dc=suffix??base";
 944                  * we don't want this to occur... */
 945                 if ( ludp->lud_scope == LDAP_SCOPE_BASE ) {
 946                         ludp->lud_scope = LDAP_SCOPE_DEFAULT;
 947                 }
 948
 949                 ber_str2bv( ludp->lud_dn, 0, 0, &olddn );
 950
 951                 dn = olddn;
 952                 if ( pa_nvals ) {
 953                         ndn = olddn;
 954                         rc = rwm_dn_massage_pretty_normalize( &dc, &olddn,
 955                                         &dn, &ndn );
 956                 } else {
 957                         rc = rwm_dn_massage_pretty( &dc, &olddn, &dn );
 958                 }
 959
 960                 switch ( rc ) {
 961                 case LDAP_UNWILLING_TO_PERFORM:
 962                         /*
 963                          * FIXME: need to check if it may be considered
 964                          * legal to trim values when adding/modifying;
 965                          * it should be when searching (e.g. ACLs).
 966                          */
 967                         ch_free( a_vals[i].bv_val );
 968                         if (last > i ) {
 969                                 a_vals[i] = a_vals[last];
 970                                 if ( pa_nvals ) {
 971                                         (*pa_nvals)[i] = (*pa_nvals)[last];
 972                                 }
 973                         }
 974                         BER_BVZERO( &a_vals[last] );
 975                         if ( pa_nvals ) {
 976                                 BER_BVZERO( &(*pa_nvals)[last] );
 977                         }
 978                         last--;
 979                         break;
 980
 981                 case LDAP_SUCCESS:
 982                         if ( !BER_BVISNULL( &dn ) && dn.bv_val != olddn.bv_val ) {
 983                                 char    *newurl;
 984
 985                                 ludp->lud_dn = dn.bv_val;
 986                                 newurl = ldap_url_desc2str( ludp );
 987                                 ludp->lud_dn = olddn.bv_val;
 988                                 ch_free( dn.bv_val );
 989                                 if ( newurl == NULL ) {
 990                                         /* FIXME: leave attr untouched
 991                                          * even if ldap_url_desc2str failed...
 992                                          */
 993                                         break;
 994                                 }
 995
 996                                 ber_str2bv( newurl, 0, 1, &a_vals[i] );
 997                                 ber_memfree( newurl );
 998
 999                                 if ( pa_nvals ) {
1000                                         ludp->lud_dn = ndn.bv_val;
1001                                         newurl = ldap_url_desc2str( ludp );
1002                                         ludp->lud_dn = olddn.bv_val;
1003                                         ch_free( ndn.bv_val );
1004                                         if ( newurl == NULL ) {
1005                                                 /* FIXME: leave attr untouched
1006                                                  * even if ldap_url_desc2str failed...
1007                                                  */
1008                                                 ch_free( a_vals[i].bv_val );
1009                                                 a_vals[i] = oldval;
1010                                                 break;
1011                                         }
1012
1013                                         if ( !BER_BVISNULL( &(*pa_nvals)[i] ) ) {
1014                                                 ch_free( (*pa_nvals)[i].bv_val );
1015                                         }
1016                                         ber_str2bv( newurl, 0, 1, &(*pa_nvals)[i] );
1017                                         ber_memfree( newurl );
1018                                 }
1019
1020                                 ch_free( oldval.bv_val );
1021                                 ludp->lud_dn = olddn.bv_val;
1022                         }
1023                         break;
1024
1025                 default:
1026                         /* leave attr untouched if massage failed */
1027                         if ( pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
1028                                 ber_dupbv( &(*pa_nvals)[i], &a_vals[i] );
1029                         }
1030                         break;
1031                 }
1032                 ldap_free_urldesc( ludp );
1033         }
1034
1035         return 0;
1036 }
1037
1038 /*
1039  * I don't like this much, but we need two different
1040  * functions because different heap managers may be
1041  * in use in back-ldap/meta to reduce the amount of
1042  * calls to malloc routines, and some of the free()
1043  * routines may be macros with args
1044  */
1045 int
1046 rwm_dnattr_rewrite(
1047         Operation               *op,
1048         SlapReply               *rs,
1049         void                    *cookie,
1050         BerVarray               a_vals,
1051         BerVarray               *pa_nvals )
1052 {
1053         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
1054         struct ldaprwmap        *rwmap =
1055                         (struct ldaprwmap *)on->on_bi.bi_private;
1056
1057         int                     i, last;
1058
1059         dncookie                dc;
1060         struct berval           dn = BER_BVNULL,
1061                                 ndn = BER_BVNULL;
1062         BerVarray               in;
1063
1064         if ( a_vals ) {
1065                 in = a_vals;
1066
1067         } else {
1068                 if ( pa_nvals == NULL || *pa_nvals == NULL ) {
1069                         return LDAP_OTHER;
1070                 }
1071                 in = *pa_nvals;
1072         }
1073
1074         /*
1075          * Rewrite the dn if needed
1076          */
1077         dc.rwmap = rwmap;
1078         dc.conn = op->o_conn;
1079         dc.rs = rs;
1080         dc.ctx = (char *)cookie;
1081
1082         for ( last = 0; !BER_BVISNULL( &in[last] ); last++ );
1083         last--;
1084         if ( pa_nvals != NULL ) {
1085                 if ( *pa_nvals == NULL ) {
1086                         *pa_nvals = ch_malloc( ( last + 2 ) * sizeof(struct berval) );
1087                         memset( *pa_nvals, 0, ( last + 2 ) * sizeof(struct berval) );
1088                 }
1089         }
1090
1091         for ( i = 0; !BER_BVISNULL( &in[i] ); i++ ) {
1092                 int             rc;
1093
1094                 if ( a_vals ) {
1095                         dn = in[i];
1096                         if ( pa_nvals ) {
1097                                 ndn = (*pa_nvals)[i];
1098                                 rc = rwm_dn_massage_pretty_normalize( &dc, &in[i], &dn, &ndn );
1099                         } else {
1100                                 rc = rwm_dn_massage_pretty( &dc, &in[i], &dn );
1101                         }
1102                 } else {
1103                         ndn = in[i];
1104                         rc = rwm_dn_massage_normalize( &dc, &in[i], &ndn );
1105                 }
1106
1107                 switch ( rc ) {
1108                 case LDAP_UNWILLING_TO_PERFORM:
1109                         /*
1110                          * FIXME: need to check if it may be considered
1111                          * legal to trim values when adding/modifying;
1112                          * it should be when searching (e.g. ACLs).
1113                          */
1114                         ch_free( in[i].bv_val );
1115                         if (last > i ) {
1116                                 in[i] = in[last];
1117                                 if ( a_vals && pa_nvals ) {
1118                                         (*pa_nvals)[i] = (*pa_nvals)[last];
1119                                 }
1120                         }
1121                         BER_BVZERO( &in[last] );
1122                         if ( a_vals && pa_nvals ) {
1123                                 BER_BVZERO( &(*pa_nvals)[last] );
1124                         }
1125                         last--;
1126                         break;
1127
1128                 case LDAP_SUCCESS:
1129                         if ( a_vals ) {
1130                                 if ( !BER_BVISNULL( &dn ) && dn.bv_val != a_vals[i].bv_val ) {
1131                                         ch_free( a_vals[i].bv_val );
1132                                         a_vals[i] = dn;
1133
1134                                         if ( pa_nvals ) {
1135                                                 if ( !BER_BVISNULL( &(*pa_nvals)[i] ) ) {
1136                                                         ch_free( (*pa_nvals)[i].bv_val );
1137                                                 }
1138                                                 (*pa_nvals)[i] = ndn;
1139                                         }
1140                                 }
1141
1142                         } else {
1143                                 if ( !BER_BVISNULL( &ndn ) && ndn.bv_val != (*pa_nvals)[i].bv_val ) {
1144                                         ch_free( (*pa_nvals)[i].bv_val );
1145                                         (*pa_nvals)[i] = ndn;
1146                                 }
1147                         }
1148                         break;
1149
1150                 default:
1151                         /* leave attr untouched if massage failed */
1152                         if ( a_vals && pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
1153                                 dnNormalize( 0, NULL, NULL, &a_vals[i], &(*pa_nvals)[i], NULL );
1154                         }
1155                         break;
1156                 }
1157         }
1158
1159         return 0;
1160 }
1161
1162 int
1163 rwm_referral_result_rewrite(
1164         dncookie                *dc,
1165         BerVarray               a_vals )
1166 {
1167         int             i, last;
1168
1169         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ );
1170         last--;
1171
1172         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
1173                 struct berval   dn,
1174                                 olddn = BER_BVNULL;
1175                 int             rc;
1176                 LDAPURLDesc     *ludp;
1177
1178                 rc = ldap_url_parse( a_vals[i].bv_val, &ludp );
1179                 if ( rc != LDAP_URL_SUCCESS ) {
1180                         /* leave attr untouched if massage failed */
1181                         continue;
1182                 }
1183
1184                 /* FIXME: URLs like "ldap:///dc=suffix" if passed
1185                  * thru ldap_url_parse() and ldap_url_desc2str()
1186                  * get rewritten as "ldap:///dc=suffix??base";
1187                  * we don't want this to occur... */
1188                 if ( ludp->lud_scope == LDAP_SCOPE_BASE ) {
1189                         ludp->lud_scope = LDAP_SCOPE_DEFAULT;
1190                 }
1191
1192                 ber_str2bv( ludp->lud_dn, 0, 0, &olddn );
1193
1194                 dn = olddn;
1195                 rc = rwm_dn_massage_pretty( dc, &olddn, &dn );
1196                 switch ( rc ) {
1197                 case LDAP_UNWILLING_TO_PERFORM:
1198                         /*
1199                          * FIXME: need to check if it may be considered
1200                          * legal to trim values when adding/modifying;
1201                          * it should be when searching (e.g. ACLs).
1202                          */
1203                         ch_free( a_vals[i].bv_val );
1204                         if ( last > i ) {
1205                                 a_vals[i] = a_vals[last];
1206                         }
1207                         BER_BVZERO( &a_vals[last] );
1208                         last--;
1209                         i--;
1210                         break;
1211
1212                 default:
1213                         /* leave attr untouched if massage failed */
1214                         if ( !BER_BVISNULL( &dn ) && olddn.bv_val != dn.bv_val ) {
1215                                 char    *newurl;
1216
1217                                 ludp->lud_dn = dn.bv_val;
1218                                 newurl = ldap_url_desc2str( ludp );
1219                                 if ( newurl == NULL ) {
1220                                         /* FIXME: leave attr untouched
1221                                          * even if ldap_url_desc2str failed...
1222                                          */
1223                                         break;
1224                                 }
1225
1226                                 ch_free( a_vals[i].bv_val );
1227                                 ber_str2bv( newurl, 0, 1, &a_vals[i] );
1228                                 ber_memfree( newurl );
1229                                 ludp->lud_dn = olddn.bv_val;
1230                         }
1231                         break;
1232                 }
1233
1234                 ldap_free_urldesc( ludp );
1235         }
1236
1237         return 0;
1238 }
1239
1240 int
1241 rwm_dnattr_result_rewrite(
1242         dncookie                *dc,
1243         BerVarray               a_vals,
1244         BerVarray               a_nvals )
1245 {
1246         int             i, last;
1247
1248         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ );
1249         last--;
1250
1251         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
1252                 struct berval   pdn, ndn = BER_BVNULL;
1253                 int             rc;
1254
1255                 pdn = a_vals[i];
1256                 rc = rwm_dn_massage_pretty_normalize( dc, &a_vals[i], &pdn, &ndn );
1257                 switch ( rc ) {
1258                 case LDAP_UNWILLING_TO_PERFORM:
1259                         /*
1260                          * FIXME: need to check if it may be considered
1261                          * legal to trim values when adding/modifying;
1262                          * it should be when searching (e.g. ACLs).
1263                          */
1264                         assert( a_vals[i].bv_val != a_nvals[i].bv_val );
1265                         ch_free( a_vals[i].bv_val );
1266                         ch_free( a_nvals[i].bv_val );
1267                         if ( last > i ) {
1268                                 a_vals[i] = a_vals[last];
1269                                 a_nvals[i] = a_nvals[last];
1270                         }
1271                         BER_BVZERO( &a_vals[last] );
1272                         BER_BVZERO( &a_nvals[last] );
1273                         last--;
1274                         break;
1275
1276                 default:
1277                         /* leave attr untouched if massage failed */
1278                         if ( !BER_BVISNULL( &pdn ) && a_vals[i].bv_val != pdn.bv_val ) {
1279                                 ch_free( a_vals[i].bv_val );
1280                                 a_vals[i] = pdn;
1281                         }
1282                         if ( !BER_BVISNULL( &ndn ) && a_nvals[i].bv_val != ndn.bv_val ) {
1283                                 ch_free( a_nvals[i].bv_val );
1284                                 a_nvals[i] = ndn;
1285                         }
1286                         break;
1287                 }
1288         }
1289
1290         return 0;
1291 }
1292
1293 void
1294 rwm_mapping_dst_free( void *v_mapping )
1295 {
1296         struct ldapmapping *mapping = v_mapping;
1297
1298         if ( BER_BVISEMPTY( &mapping[0].m_dst ) ) {
1299                 rwm_mapping_free( &mapping[ -1 ] );
1300         }
1301 }
1302
1303 void
1304 rwm_mapping_free( void *v_mapping )
1305 {
1306         struct ldapmapping *mapping = v_mapping;
1307
1308         if ( !BER_BVISNULL( &mapping[0].m_src ) ) {
1309                 ch_free( mapping[0].m_src.bv_val );
1310         }
1311
1312         if ( mapping[0].m_flags & RWMMAP_F_FREE_SRC ) {
1313                 if ( mapping[0].m_flags & RWMMAP_F_IS_OC ) {
1314                         if ( mapping[0].m_src_oc ) {
1315                                 ch_free( mapping[0].m_src_oc );
1316                         }
1317
1318                 } else {
1319                         if ( mapping[0].m_src_ad ) {
1320                                 ch_free( mapping[0].m_src_ad );
1321                         }
1322                 }
1323         }
1324
1325         if ( !BER_BVISNULL( &mapping[0].m_dst ) ) {
1326                 ch_free( mapping[0].m_dst.bv_val );
1327         }
1328
1329         if ( mapping[0].m_flags & RWMMAP_F_FREE_DST ) {
1330                 if ( mapping[0].m_flags & RWMMAP_F_IS_OC ) {
1331                         if ( mapping[0].m_dst_oc ) {
1332                                 ch_free( mapping[0].m_dst_oc );
1333                         }
1334
1335                 } else {
1336                         if ( mapping[0].m_dst_ad ) {
1337                                 ch_free( mapping[0].m_dst_ad );
1338                         }
1339                 }
1340         }
1341
1342         ch_free( mapping );
1343
1344 }
1345
1346 #endif /* SLAPD_OVER_RWM */