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 1999-2005 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 );
  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         /* FIXME: I don't think this is needed any more... */
  85         rc = slap_str2ad( "objectClass", &mapping->m_src_ad, &text );
  86         if ( rc != LDAP_SUCCESS ) {
  87                 return rc;
  88         }
  89
  90         mapping->m_dst_ad = mapping->m_src_ad;
  91         ber_dupbv( &mapping->m_dst, &mapping->m_src_ad->ad_cname );
  92         ber_dupbv( &mapping->m_dst, &mapping->m_src );
  93
  94         mapping[1].m_src = mapping->m_src;
  95         mapping[1].m_dst = mapping->m_dst;
  96
  97         avl_insert( &lm->map, (caddr_t)mapping,
  98                         rwm_mapping_cmp, rwm_mapping_dup );
  99         avl_insert( &lm->remap, (caddr_t)&mapping[1],
 100                         rwm_mapping_cmp, rwm_mapping_dup );
 101
 102         *m = mapping;
 103
 104         return rc;
 105 }
 106
 107 int
 108 rwm_mapping( struct ldapmap *map, struct berval *s, struct ldapmapping **m, int remap )
 109 {
 110         Avlnode *tree;
 111         struct ldapmapping fmapping;
 112
 113         assert( m );
 114
 115         if ( remap == RWM_REMAP ) {
 116                 tree = map->remap;
 117
 118         } else {
 119                 tree = map->map;
 120         }
 121
 122         fmapping.m_src = *s;
 123         *m = (struct ldapmapping *)avl_find( tree, (caddr_t)&fmapping,
 124                         rwm_mapping_cmp );
 125
 126         if ( *m == NULL ) {
 127                 return map->drop_missing;
 128         }
 129
 130         return 0;
 131 }
 132
 133 void
 134 rwm_map( struct ldapmap *map, struct berval *s, struct berval *bv, int remap )
 135 {
 136         struct ldapmapping *mapping;
 137
 138         BER_BVZERO( bv );
 139         ( void )rwm_mapping( map, s, &mapping, remap );
 140         if ( mapping != NULL ) {
 141                 if ( !BER_BVISNULL( &mapping->m_dst ) ) {
 142                         *bv = mapping->m_dst;
 143                 }
 144                 return;
 145         }
 146
 147         if ( !map->drop_missing ) {
 148                 *bv = *s;
 149         }
 150 }
 151
 152 /*
 153  * Map attribute names in place
 154  */
 155 int
 156 rwm_map_attrnames(
 157                 struct ldapmap *at_map,
 158                 struct ldapmap *oc_map,
 159                 AttributeName *an,
 160                 AttributeName **anp,
 161                 int remap
 162 )
 163 {
 164         int             i, j;
 165
 166         assert( anp );
 167
 168         *anp = NULL;
 169
 170         if ( an == NULL ) {
 171                 return LDAP_SUCCESS;
 172         }
 173
 174         for ( i = 0; !BER_BVISNULL( &an[i].an_name ); i++ )
 175                 /* just count */ ;
 176         *anp = ch_malloc( ( i + 1 )* sizeof( AttributeName ) );
 177         if ( *anp == NULL ) {
 178                 return LDAP_NO_MEMORY;
 179         }
 180
 181         for ( i = 0, j = 0; !BER_BVISNULL( &an[i].an_name ); i++ ) {
 182                 struct ldapmapping      *m;
 183                 int                     at_drop_missing = 0,
 184                                         oc_drop_missing = 0;
 185
 186                 if ( an[i].an_desc ) {
 187                         if ( !at_map ) {
 188                                 /* FIXME: better leave as is? */
 189                                 continue;
 190                         }
 191
 192                         at_drop_missing = rwm_mapping( at_map, &an[i].an_name, &m, remap );
 193                         if ( at_drop_missing || ( m && BER_BVISNULL( &m->m_dst ) ) ) {
 194                                 continue;
 195                         }
 196
 197                         if ( !m ) {
 198                                 (*anp)[j] = an[i];
 199                                 j++;
 200                                 continue;
 201                         }
 202
 203                         (*anp)[j] = an[i];
 204                         if ( remap == RWM_MAP ) {
 205                                 (*anp)[j].an_name = m->m_dst;
 206                                 (*anp)[j].an_desc = m->m_dst_ad;
 207                         } else {
 208                                 (*anp)[j].an_name = m->m_src;
 209                                 (*anp)[j].an_desc = m->m_src_ad;
 210
 211                         }
 212
 213                         j++;
 214                         continue;
 215
 216                 } else if ( an[i].an_oc ) {
 217                         if ( !oc_map ) {
 218                                 /* FIXME: better leave as is? */
 219                                 continue;
 220                         }
 221
 222                         oc_drop_missing = rwm_mapping( oc_map, &an[i].an_name, &m, remap );
 223
 224                         if ( oc_drop_missing || ( m && BER_BVISNULL( &m->m_dst ) ) ) {
 225                                 continue;
 226                         }
 227
 228                         if ( !m ) {
 229                                 (*anp)[j] = an[i];
 230                                 j++;
 231                                 continue;
 232                         }
 233
 234                         (*anp)[j] = an[i];
 235                         if ( remap == RWM_MAP ) {
 236                                 (*anp)[j].an_name = m->m_dst;
 237                                 (*anp)[j].an_oc = m->m_dst_oc;
 238                         } else {
 239                                 (*anp)[j].an_name = m->m_src;
 240                                 (*anp)[j].an_oc = m->m_src_oc;
 241                         }
 242
 243                 } else {
 244                         at_drop_missing = rwm_mapping( at_map, &an[i].an_name, &m, remap );
 245
 246                         if ( at_drop_missing || !m ) {
 247
 248                                 oc_drop_missing = rwm_mapping( oc_map, &an[i].an_name, &m, remap );
 249
 250                                 /* if both at_map and oc_map required to drop missing,
 251                                  * then do it */
 252                                 if ( oc_drop_missing && at_drop_missing ) {
 253                                         continue;
 254                                 }
 255
 256                                 /* if no oc_map mapping was found and at_map required
 257                                  * to drop missing, then do it; otherwise, at_map wins
 258                                  * and an is considered an attr and is left unchanged */
 259                                 if ( !m ) {
 260                                         if ( at_drop_missing ) {
 261                                                 continue;
 262                                         }
 263                                         (*anp)[j] = an[i];
 264                                         j++;
 265                                         continue;
 266                                 }
 267
 268                                 if ( BER_BVISNULL( &m->m_dst ) ) {
 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                                 j++;
 281                                 continue;
 282                         }
 283
 284                         if ( !BER_BVISNULL( &m->m_dst ) ) {
 285                                 (*anp)[j] = an[i];
 286                                 if ( remap == RWM_MAP ) {
 287                                         (*anp)[j].an_name = m->m_dst;
 288                                         (*anp)[j].an_desc = m->m_dst_ad;
 289                                 } else {
 290                                         (*anp)[j].an_name = m->m_src;
 291                                         (*anp)[j].an_desc = m->m_src_ad;
 292                                 }
 293                                 j++;
 294                                 continue;
 295                         }
 296                 }
 297         }
 298
 299         if ( j == 0 && i != 0 ) {
 300                 memset( &(*anp)[0], 0, sizeof( AttributeName ) );
 301                 BER_BVSTR( &(*anp)[0].an_name, LDAP_NO_ATTRS );
 302         }
 303         memset( &(*anp)[j], 0, sizeof( AttributeName ) );
 304
 305         return LDAP_SUCCESS;
 306 }
 307
 308 int
 309 rwm_map_attrs(
 310                 struct ldapmap *at_map,
 311                 AttributeName *an,
 312                 int remap,
 313                 char ***mapped_attrs
 314 )
 315 {
 316         int i, j;
 317         char **na;
 318
 319         if ( an == NULL ) {
 320                 *mapped_attrs = NULL;
 321                 return LDAP_SUCCESS;
 322         }
 323
 324         for ( i = 0; !BER_BVISNULL( &an[i].an_name ); i++ ) {
 325                 /*  */
 326         }
 327
 328         na = (char **)ch_calloc( i + 1, sizeof( char * ) );
 329         if (na == NULL) {
 330                 *mapped_attrs = NULL;
 331                 return LDAP_NO_MEMORY;
 332         }
 333
 334         for ( i = j = 0; !BER_BVISNULL( &an[i].an_name ); i++ ) {
 335                 struct ldapmapping      *m;
 336
 337                 if ( rwm_mapping( at_map, &an[i].an_name, &m, remap ) ) {
 338                         continue;
 339                 }
 340
 341                 if ( !m || ( m && !BER_BVISNULL( &m->m_dst ) ) ) {
 342                         na[j++] = m->m_dst.bv_val;
 343                 }
 344         }
 345         if ( j == 0 && i != 0 ) {
 346                 na[j++] = LDAP_NO_ATTRS;
 347         }
 348         na[j] = NULL;
 349
 350         *mapped_attrs = na;
 351         return LDAP_SUCCESS;
 352 }
 353
 354 static int
 355 map_attr_value(
 356                 dncookie                *dc,
 357                 AttributeDescription    *ad,
 358                 struct berval           *mapped_attr,
 359                 struct berval           *value,
 360                 struct berval           *mapped_value,
 361                 int                     remap )
 362 {
 363         struct berval           vtmp = BER_BVNULL;
 364         int                     freeval = 0;
 365
 366         rwm_map( &dc->rwmap->rwm_at, &ad->ad_cname, mapped_attr, remap );
 367         if ( BER_BVISNULL( mapped_attr ) || BER_BVISEMPTY( mapped_attr ) ) {
 368                 /*
 369                  * FIXME: are we sure we need to search oc_map if at_map fails?
 370                  */
 371                 rwm_map( &dc->rwmap->rwm_oc, &ad->ad_cname, mapped_attr, remap );
 372                 if ( BER_BVISNULL( mapped_attr ) || BER_BVISEMPTY( mapped_attr ) )
 373                 {
 374                         *mapped_attr = ad->ad_cname;
 375                 }
 376         }
 377
 378         if ( value == NULL ) {
 379                 return 0;
 380         }
 381
 382         if ( ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName )
 383         {
 384                 dncookie        fdc = *dc;
 385                 int             rc;
 386
 387 #ifdef ENABLE_REWRITE
 388                 fdc.ctx = "searchFilterAttrDN";
 389 #endif /* ENABLE_REWRITE */
 390
 391                 vtmp = *value;
 392                 rc = rwm_dn_massage_normalize( &fdc, value, &vtmp );
 393                 switch ( rc ) {
 394                 case LDAP_SUCCESS:
 395                         if ( vtmp.bv_val != value->bv_val ) {
 396                                 freeval = 1;
 397                         }
 398                         break;
 399
 400                 case LDAP_UNWILLING_TO_PERFORM:
 401                 case LDAP_OTHER:
 402                 default:
 403                         return -1;
 404                 }
 405
 406         } else if ( ad == slap_schema.si_ad_objectClass
 407                         || ad == slap_schema.si_ad_structuralObjectClass )
 408         {
 409                 rwm_map( &dc->rwmap->rwm_oc, value, &vtmp, remap );
 410                 if ( BER_BVISNULL( &vtmp ) || BER_BVISEMPTY( &vtmp ) ) {
 411                         vtmp = *value;
 412                 }
 413
 414         } else {
 415                 vtmp = *value;
 416         }
 417
 418         filter_escape_value( &vtmp, mapped_value );
 419
 420         if ( freeval ) {
 421                 ch_free( vtmp.bv_val );
 422         }
 423
 424         return 0;
 425 }
 426
 427 static int
 428 rwm_int_filter_map_rewrite(
 429                 dncookie                *dc,
 430                 Filter                  *f,
 431                 struct berval           *fstr )
 432 {
 433         int             i;
 434         Filter          *p;
 435         struct berval   atmp,
 436                         vtmp,
 437                         tmp;
 438         static struct berval
 439                         ber_bvfalse = BER_BVC( "(?=false)" ),
 440                         ber_bvtrue = BER_BVC( "(?=true)" ),
 441                         ber_bvundefined = BER_BVC( "(?=undefined)" ),
 442                         ber_bverror = BER_BVC( "(?=error)" ),
 443                         ber_bvunknown = BER_BVC( "(?=unknown)" ),
 444                         ber_bvnone = BER_BVC( "(?=none)" );
 445         ber_len_t       len;
 446
 447         if ( f == NULL ) {
 448                 ber_dupbv( fstr, &ber_bvnone );
 449                 return -1;
 450         }
 451
 452         switch ( f->f_choice ) {
 453         case LDAP_FILTER_EQUALITY:
 454                 if ( map_attr_value( dc, f->f_av_desc, &atmp,
 455                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 456                 {
 457                         return -1;
 458                 }
 459
 460                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(=)" );
 461                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 462
 463                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=%s)",
 464                         atmp.bv_val, vtmp.bv_val );
 465
 466                 ch_free( vtmp.bv_val );
 467                 break;
 468
 469         case LDAP_FILTER_GE:
 470                 if ( map_attr_value( dc, f->f_av_desc, &atmp,
 471                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 472                 {
 473                         return -1;
 474                 }
 475
 476                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(>=)" );
 477                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 478
 479                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s>=%s)",
 480                         atmp.bv_val, vtmp.bv_val );
 481
 482                 ch_free( vtmp.bv_val );
 483                 break;
 484
 485         case LDAP_FILTER_LE:
 486                 if ( map_attr_value( dc, f->f_av_desc, &atmp,
 487                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 488                 {
 489                         return -1;
 490                 }
 491
 492                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(<=)" );
 493                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 494
 495                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s<=%s)",
 496                         atmp.bv_val, vtmp.bv_val );
 497
 498                 ch_free( vtmp.bv_val );
 499                 break;
 500
 501         case LDAP_FILTER_APPROX:
 502                 if ( map_attr_value( dc, f->f_av_desc, &atmp,
 503                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 504                 {
 505                         return -1;
 506                 }
 507
 508                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(~=)" );
 509                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 510
 511                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s~=%s)",
 512                         atmp.bv_val, vtmp.bv_val );
 513
 514                 ch_free( vtmp.bv_val );
 515                 break;
 516
 517         case LDAP_FILTER_SUBSTRINGS:
 518                 if ( map_attr_value( dc, f->f_sub_desc, &atmp,
 519                                         NULL, NULL, RWM_MAP ) )
 520                 {
 521                         return -1;
 522                 }
 523
 524                 /* cannot be a DN ... */
 525
 526                 fstr->bv_len = atmp.bv_len + STRLENOF( "(=*)" );
 527                 fstr->bv_val = ch_malloc( fstr->bv_len + 128 );
 528
 529                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
 530                         atmp.bv_val );
 531
 532                 if ( !BER_BVISNULL( &f->f_sub_initial ) ) {
 533                         len = fstr->bv_len;
 534
 535                         filter_escape_value( &f->f_sub_initial, &vtmp );
 536
 537                         fstr->bv_len += vtmp.bv_len;
 538                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 539
 540                         snprintf( &fstr->bv_val[len - 2], vtmp.bv_len + 3,
 541                                 /* "(attr=" */ "%s*)",
 542                                 vtmp.bv_val );
 543
 544                         ch_free( vtmp.bv_val );
 545                 }
 546
 547                 if ( f->f_sub_any != NULL ) {
 548                         for ( i = 0; !BER_BVISNULL( &f->f_sub_any[i] ); i++ ) {
 549                                 len = fstr->bv_len;
 550                                 filter_escape_value( &f->f_sub_any[i], &vtmp );
 551
 552                                 fstr->bv_len += vtmp.bv_len + 1;
 553                                 fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 554
 555                                 snprintf( &fstr->bv_val[len - 1], vtmp.bv_len + 3,
 556                                         /* "(attr=[init]*[any*]" */ "%s*)",
 557                                         vtmp.bv_val );
 558                                 ch_free( vtmp.bv_val );
 559                         }
 560                 }
 561
 562                 if ( !BER_BVISNULL( &f->f_sub_final ) ) {
 563                         len = fstr->bv_len;
 564
 565                         filter_escape_value( &f->f_sub_final, &vtmp );
 566
 567                         fstr->bv_len += vtmp.bv_len;
 568                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 569
 570                         snprintf( &fstr->bv_val[len - 1], vtmp.bv_len + 3,
 571                                 /* "(attr=[init*][any*]" */ "%s)",
 572                                 vtmp.bv_val );
 573
 574                         ch_free( vtmp.bv_val );
 575                 }
 576
 577                 break;
 578
 579         case LDAP_FILTER_PRESENT:
 580                 if ( map_attr_value( dc, f->f_desc, &atmp,
 581                                         NULL, NULL, RWM_MAP ) )
 582                 {
 583                         return -1;
 584                 }
 585
 586                 fstr->bv_len = atmp.bv_len + STRLENOF( "(=*)" );
 587                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 588
 589                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
 590                         atmp.bv_val );
 591                 break;
 592
 593         case LDAP_FILTER_AND:
 594         case LDAP_FILTER_OR:
 595         case LDAP_FILTER_NOT:
 596                 fstr->bv_len = STRLENOF( "(%)" );
 597                 fstr->bv_val = ch_malloc( fstr->bv_len + 128 );
 598
 599                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%c)",
 600                         f->f_choice == LDAP_FILTER_AND ? '&' :
 601                         f->f_choice == LDAP_FILTER_OR ? '|' : '!' );
 602
 603                 for ( p = f->f_list; p != NULL; p = p->f_next ) {
 604                         len = fstr->bv_len;
 605
 606                         if ( rwm_int_filter_map_rewrite( dc, p, &vtmp ) )
 607                         {
 608                                 return -1;
 609                         }
 610
 611                         fstr->bv_len += vtmp.bv_len;
 612                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 613
 614                         snprintf( &fstr->bv_val[len-1], vtmp.bv_len + 2,
 615                                 /*"("*/ "%s)", vtmp.bv_val );
 616
 617                         ch_free( vtmp.bv_val );
 618                 }
 619
 620                 break;
 621
 622         case LDAP_FILTER_EXT: {
 623                 if ( f->f_mr_desc ) {
 624                         if ( map_attr_value( dc, f->f_mr_desc, &atmp,
 625                                                 &f->f_mr_value, &vtmp, RWM_MAP ) )
 626                         {
 627                                 return -1;
 628                         }
 629
 630                 } else {
 631                         BER_BVSTR( &atmp, "" );
 632                         filter_escape_value( &f->f_mr_value, &vtmp );
 633                 }
 634
 635
 636                 fstr->bv_len = atmp.bv_len +
 637                         ( f->f_mr_dnattrs ? STRLENOF( ":dn" ) : 0 ) +
 638                         ( f->f_mr_rule_text.bv_len ? f->f_mr_rule_text.bv_len + 1 : 0 ) +
 639                         vtmp.bv_len + STRLENOF( "(:=)" );
 640                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 641
 642                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s%s%s:=%s)",
 643                         atmp.bv_val,
 644                         f->f_mr_dnattrs ? ":dn" : "",
 645                         !BER_BVISEMPTY( &f->f_mr_rule_text ) ? ":" : "",
 646                         !BER_BVISEMPTY( &f->f_mr_rule_text ) ? f->f_mr_rule_text.bv_val : "",
 647                         vtmp.bv_val );
 648                 ch_free( vtmp.bv_val );
 649                 break;
 650         }
 651
 652         case SLAPD_FILTER_COMPUTED:
 653                 switch ( f->f_result ) {
 654                 case LDAP_COMPARE_FALSE:
 655                         tmp = ber_bvfalse;
 656                         break;
 657
 658                 case LDAP_COMPARE_TRUE:
 659                         tmp = ber_bvtrue;
 660                         break;
 661
 662                 case SLAPD_COMPARE_UNDEFINED:
 663                         tmp = ber_bvundefined;
 664                         break;
 665
 666                 default:
 667                         tmp = ber_bverror;
 668                         break;
 669                 }
 670
 671                 ber_dupbv( fstr, &tmp );
 672                 break;
 673
 674         default:
 675                 ber_dupbv( fstr, &ber_bvunknown );
 676                 break;
 677         }
 678
 679         return 0;
 680 }
 681
 682 int
 683 rwm_filter_map_rewrite(
 684                 dncookie                *dc,
 685                 Filter                  *f,
 686                 struct berval           *fstr )
 687 {
 688         int             rc;
 689         dncookie        fdc;
 690         struct berval   ftmp;
 691
 692         rc = rwm_int_filter_map_rewrite( dc, f, fstr );
 693
 694 #ifdef ENABLE_REWRITE
 695         if ( rc != LDAP_SUCCESS ) {
 696                 return rc;
 697         }
 698
 699         fdc = *dc;
 700         ftmp = *fstr;
 701
 702         fdc.ctx = "searchFilter";
 703
 704         switch ( rewrite_session( fdc.rwmap->rwm_rw, fdc.ctx,
 705                                 ( !BER_BVISEMPTY( &ftmp ) ? ftmp.bv_val : "" ),
 706                                 fdc.conn, &fstr->bv_val ) )
 707         {
 708         case REWRITE_REGEXEC_OK:
 709                 if ( !BER_BVISNULL( fstr ) ) {
 710                         fstr->bv_len = strlen( fstr->bv_val );
 711                         ch_free( ftmp.bv_val );
 712
 713                 } else {
 714                         *fstr = ftmp;
 715                 }
 716
 717                 Debug( LDAP_DEBUG_ARGS,
 718                         "[rw] %s: \"%s\" -> \"%s\"\n",
 719                         fdc.ctx, ftmp.bv_val, fstr->bv_val );
 720                 rc = LDAP_SUCCESS;
 721                 break;
 722
 723         case REWRITE_REGEXEC_UNWILLING:
 724                 if ( fdc.rs ) {
 725                         fdc.rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 726                         fdc.rs->sr_text = "Operation not allowed";
 727                 }
 728                 rc = LDAP_UNWILLING_TO_PERFORM;
 729                 break;
 730
 731         case REWRITE_REGEXEC_ERR:
 732                 if ( fdc.rs ) {
 733                         fdc.rs->sr_err = LDAP_OTHER;
 734                         fdc.rs->sr_text = "Rewrite error";
 735                 }
 736                 rc = LDAP_OTHER;
 737                 break;
 738         }
 739
 740 #endif /* ENABLE_REWRITE */
 741         return rc;
 742 }
 743
 744 /*
 745  * I don't like this much, but we need two different
 746  * functions because different heap managers may be
 747  * in use in back-ldap/meta to reduce the amount of
 748  * calls to malloc routines, and some of the free()
 749  * routines may be macros with args
 750  */
 751 int
 752 rwm_referral_rewrite(
 753         Operation               *op,
 754         SlapReply               *rs,
 755         void                    *cookie,
 756         BerVarray               a_vals,
 757         BerVarray               *pa_nvals )
 758 {
 759         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 760         struct ldaprwmap        *rwmap =
 761                         (struct ldaprwmap *)on->on_bi.bi_private;
 762
 763         int                     i, last;
 764
 765         dncookie                dc;
 766         struct berval           dn = BER_BVNULL,
 767                                 ndn = BER_BVNULL;
 768
 769         assert( a_vals );
 770
 771         /*
 772          * Rewrite the dn if needed
 773          */
 774         dc.rwmap = rwmap;
 775 #ifdef ENABLE_REWRITE
 776         dc.conn = op->o_conn;
 777         dc.rs = rs;
 778         dc.ctx = (char *)cookie;
 779 #else /* ! ENABLE_REWRITE */
 780         dc.tofrom = ((int *)cookie)[0];
 781         dc.normalized = 0;
 782 #endif /* ! ENABLE_REWRITE */
 783
 784         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ )
 785                 ;
 786         last--;
 787
 788         if ( pa_nvals != NULL ) {
 789                 if ( *pa_nvals == NULL ) {
 790                         *pa_nvals = ch_malloc( ( last + 2 ) * sizeof(struct berval) );
 791                         memset( *pa_nvals, 0, ( last + 2 ) * sizeof(struct berval) );
 792                 }
 793         }
 794
 795         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
 796                 struct berval   olddn, oldval;
 797                 int             rc;
 798                 LDAPURLDesc     *ludp;
 799
 800                 oldval = a_vals[i];
 801                 rc = ldap_url_parse( oldval.bv_val, &ludp );
 802                 if ( rc != LDAP_URL_SUCCESS ) {
 803                         /* leave attr untouched if massage failed */
 804                         if ( pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
 805                                 ber_dupbv( &(*pa_nvals)[i], &oldval );
 806                         }
 807                         continue;
 808                 }
 809
 810                 /* FIXME: URLs like "ldap:///dc=suffix" if passed
 811                  * thru ldap_url_parse() and ldap_url_desc2str()
 812                  * get rewritten as "ldap:///dc=suffix??base";
 813                  * we don't want this to occur... */
 814                 if ( ludp->lud_scope == LDAP_SCOPE_BASE ) {
 815                         ludp->lud_scope = LDAP_SCOPE_DEFAULT;
 816                 }
 817
 818                 ber_str2bv( ludp->lud_dn, 0, 0, &olddn );
 819
 820                 dn = olddn;
 821                 if ( pa_nvals ) {
 822                         ndn = olddn;
 823                         rc = rwm_dn_massage_pretty_normalize( &dc, &olddn,
 824                                         &dn, &ndn );
 825                 } else {
 826                         rc = rwm_dn_massage_pretty( &dc, &olddn, &dn );
 827                 }
 828
 829                 switch ( rc ) {
 830                 case LDAP_UNWILLING_TO_PERFORM:
 831                         /*
 832                          * FIXME: need to check if it may be considered
 833                          * legal to trim values when adding/modifying;
 834                          * it should be when searching (e.g. ACLs).
 835                          */
 836                         ch_free( a_vals[i].bv_val );
 837                         if (last > i ) {
 838                                 a_vals[i] = a_vals[last];
 839                                 if ( pa_nvals ) {
 840                                         (*pa_nvals)[i] = (*pa_nvals)[last];
 841                                 }
 842                         }
 843                         BER_BVZERO( &a_vals[last] );
 844                         if ( pa_nvals ) {
 845                                 BER_BVZERO( &(*pa_nvals)[last] );
 846                         }
 847                         last--;
 848                         break;
 849
 850                 case LDAP_SUCCESS:
 851                         if ( !BER_BVISNULL( &dn ) && dn.bv_val != olddn.bv_val ) {
 852                                 char    *newurl;
 853
 854                                 ludp->lud_dn = dn.bv_val;
 855                                 newurl = ldap_url_desc2str( ludp );
 856                                 ludp->lud_dn = olddn.bv_val;
 857                                 ch_free( dn.bv_val );
 858                                 if ( newurl == NULL ) {
 859                                         /* FIXME: leave attr untouched
 860                                          * even if ldap_url_desc2str failed...
 861                                          */
 862                                         break;
 863                                 }
 864
 865                                 ber_str2bv( newurl, 0, 1, &a_vals[i] );
 866                                 LDAP_FREE( newurl );
 867
 868                                 if ( pa_nvals ) {
 869                                         ludp->lud_dn = ndn.bv_val;
 870                                         newurl = ldap_url_desc2str( ludp );
 871                                         ludp->lud_dn = olddn.bv_val;
 872                                         ch_free( ndn.bv_val );
 873                                         if ( newurl == NULL ) {
 874                                                 /* FIXME: leave attr untouched
 875                                                  * even if ldap_url_desc2str failed...
 876                                                  */
 877                                                 ch_free( a_vals[i].bv_val );
 878                                                 a_vals[i] = oldval;
 879                                                 break;
 880                                         }
 881
 882                                         if ( !BER_BVISNULL( &(*pa_nvals)[i] ) ) {
 883                                                 ch_free( (*pa_nvals)[i].bv_val );
 884                                         }
 885                                         ber_str2bv( newurl, 0, 1, &(*pa_nvals)[i] );
 886                                         LDAP_FREE( newurl );
 887                                 }
 888
 889                                 ch_free( oldval.bv_val );
 890                                 ludp->lud_dn = olddn.bv_val;
 891                         }
 892                         break;
 893
 894                 default:
 895                         /* leave attr untouched if massage failed */
 896                         if ( pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
 897                                 ber_dupbv( &(*pa_nvals)[i], &a_vals[i] );
 898                         }
 899                         break;
 900                 }
 901                 ldap_free_urldesc( ludp );
 902         }
 903
 904         return 0;
 905 }
 906
 907 /*
 908  * I don't like this much, but we need two different
 909  * functions because different heap managers may be
 910  * in use in back-ldap/meta to reduce the amount of
 911  * calls to malloc routines, and some of the free()
 912  * routines may be macros with args
 913  */
 914 int
 915 rwm_dnattr_rewrite(
 916         Operation               *op,
 917         SlapReply               *rs,
 918         void                    *cookie,
 919         BerVarray               a_vals,
 920         BerVarray               *pa_nvals )
 921 {
 922         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 923         struct ldaprwmap        *rwmap =
 924                         (struct ldaprwmap *)on->on_bi.bi_private;
 925
 926         int                     i, last;
 927
 928         dncookie                dc;
 929         struct berval           dn = BER_BVNULL,
 930                                 ndn = BER_BVNULL;
 931         BerVarray               in;
 932
 933         if ( a_vals ) {
 934                 in = a_vals;
 935
 936         } else {
 937                 if ( pa_nvals == NULL || *pa_nvals == NULL ) {
 938                         return LDAP_OTHER;
 939                 }
 940                 in = *pa_nvals;
 941         }
 942
 943         /*
 944          * Rewrite the dn if needed
 945          */
 946         dc.rwmap = rwmap;
 947 #ifdef ENABLE_REWRITE
 948         dc.conn = op->o_conn;
 949         dc.rs = rs;
 950         dc.ctx = (char *)cookie;
 951 #else /* ! ENABLE_REWRITE */
 952         dc.tofrom = ((int *)cookie)[0];
 953         dc.normalized = 0;
 954 #endif /* ! ENABLE_REWRITE */
 955
 956         for ( last = 0; !BER_BVISNULL( &in[last] ); last++ );
 957         last--;
 958         if ( pa_nvals != NULL ) {
 959                 if ( *pa_nvals == NULL ) {
 960                         *pa_nvals = ch_malloc( ( last + 2 ) * sizeof(struct berval) );
 961                         memset( *pa_nvals, 0, ( last + 2 ) * sizeof(struct berval) );
 962                 }
 963         }
 964
 965         for ( i = 0; !BER_BVISNULL( &in[i] ); i++ ) {
 966                 int             rc;
 967
 968                 if ( a_vals ) {
 969                         dn = in[i];
 970                         if ( pa_nvals ) {
 971                                 ndn = (*pa_nvals)[i];
 972                                 rc = rwm_dn_massage_pretty_normalize( &dc, &in[i], &dn, &ndn );
 973                         } else {
 974                                 rc = rwm_dn_massage_pretty( &dc, &in[i], &dn );
 975                         }
 976                 } else {
 977                         ndn = in[i];
 978                         rc = rwm_dn_massage_normalize( &dc, &in[i], &ndn );
 979                 }
 980
 981                 switch ( rc ) {
 982                 case LDAP_UNWILLING_TO_PERFORM:
 983                         /*
 984                          * FIXME: need to check if it may be considered
 985                          * legal to trim values when adding/modifying;
 986                          * it should be when searching (e.g. ACLs).
 987                          */
 988                         ch_free( in[i].bv_val );
 989                         if (last > i ) {
 990                                 in[i] = in[last];
 991                                 if ( a_vals && pa_nvals ) {
 992                                         (*pa_nvals)[i] = (*pa_nvals)[last];
 993                                 }
 994                         }
 995                         BER_BVZERO( &in[last] );
 996                         if ( a_vals && pa_nvals ) {
 997                                 BER_BVZERO( &(*pa_nvals)[last] );
 998                         }
 999                         last--;
1000                         break;
1001
1002                 case LDAP_SUCCESS:
1003                         if ( a_vals ) {
1004                                 if ( !BER_BVISNULL( &dn ) && dn.bv_val != a_vals[i].bv_val ) {
1005                                         ch_free( a_vals[i].bv_val );
1006                                         a_vals[i] = dn;
1007
1008                                         if ( pa_nvals ) {
1009                                                 if ( !BER_BVISNULL( &(*pa_nvals)[i] ) ) {
1010                                                         ch_free( (*pa_nvals)[i].bv_val );
1011                                                 }
1012                                                 (*pa_nvals)[i] = ndn;
1013                                         }
1014                                 }
1015
1016                         } else {
1017                                 if ( !BER_BVISNULL( &ndn ) && ndn.bv_val != (*pa_nvals)[i].bv_val ) {
1018                                         ch_free( (*pa_nvals)[i].bv_val );
1019                                         (*pa_nvals)[i] = ndn;
1020                                 }
1021                         }
1022                         break;
1023
1024                 default:
1025                         /* leave attr untouched if massage failed */
1026                         if ( a_vals && pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
1027                                 dnNormalize( 0, NULL, NULL, &a_vals[i], &(*pa_nvals)[i], NULL );
1028                         }
1029                         break;
1030                 }
1031         }
1032
1033         return 0;
1034 }
1035
1036 int
1037 rwm_referral_result_rewrite(
1038         dncookie                *dc,
1039         BerVarray               a_vals
1040 )
1041 {
1042         int             i, last;
1043
1044         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ );
1045         last--;
1046
1047         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
1048                 struct berval   dn, olddn;
1049                 int             rc;
1050                 LDAPURLDesc     *ludp;
1051
1052                 rc = ldap_url_parse( a_vals[i].bv_val, &ludp );
1053                 if ( rc != LDAP_URL_SUCCESS ) {
1054                         /* leave attr untouched if massage failed */
1055                         continue;
1056                 }
1057
1058                 /* FIXME: URLs like "ldap:///dc=suffix" if passed
1059                  * thru ldap_url_parse() and ldap_url_desc2str()
1060                  * get rewritten as "ldap:///dc=suffix??base";
1061                  * we don't want this to occur... */
1062                 if ( ludp->lud_scope == LDAP_SCOPE_BASE ) {
1063                         ludp->lud_scope = LDAP_SCOPE_DEFAULT;
1064                 }
1065
1066                 ber_str2bv( ludp->lud_dn, 0, 0, &olddn );
1067
1068                 dn = olddn;
1069                 rc = rwm_dn_massage_pretty( dc, &olddn, &dn );
1070                 switch ( rc ) {
1071                 case LDAP_UNWILLING_TO_PERFORM:
1072                         /*
1073                          * FIXME: need to check if it may be considered
1074                          * legal to trim values when adding/modifying;
1075                          * it should be when searching (e.g. ACLs).
1076                          */
1077                         ch_free( a_vals[i].bv_val );
1078                         if ( last > i ) {
1079                                 a_vals[i] = a_vals[last];
1080                         }
1081                         BER_BVZERO( &a_vals[last] );
1082                         last--;
1083                         i--;
1084                         break;
1085
1086                 default:
1087                         /* leave attr untouched if massage failed */
1088                         if ( !BER_BVISNULL( &dn ) && olddn.bv_val != dn.bv_val ) {
1089                                 char    *newurl;
1090
1091                                 ludp->lud_dn = dn.bv_val;
1092                                 newurl = ldap_url_desc2str( ludp );
1093                                 if ( newurl == NULL ) {
1094                                         /* FIXME: leave attr untouched
1095                                          * even if ldap_url_desc2str failed...
1096                                          */
1097                                         break;
1098                                 }
1099
1100                                 ch_free( a_vals[i].bv_val );
1101                                 ber_str2bv( newurl, 0, 1, &a_vals[i] );
1102                                 LDAP_FREE( newurl );
1103                                 ludp->lud_dn = olddn.bv_val;
1104                         }
1105                         break;
1106                 }
1107
1108                 ldap_free_urldesc( ludp );
1109         }
1110
1111         return 0;
1112 }
1113
1114 int
1115 rwm_dnattr_result_rewrite(
1116         dncookie                *dc,
1117         BerVarray               a_vals
1118 )
1119 {
1120         int             i, last;
1121
1122         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ );
1123         last--;
1124
1125         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
1126                 struct berval   dn;
1127                 int             rc;
1128
1129                 dn = a_vals[i];
1130                 rc = rwm_dn_massage_pretty( dc, &a_vals[i], &dn );
1131                 switch ( rc ) {
1132                 case LDAP_UNWILLING_TO_PERFORM:
1133                         /*
1134                          * FIXME: need to check if it may be considered
1135                          * legal to trim values when adding/modifying;
1136                          * it should be when searching (e.g. ACLs).
1137                          */
1138                         ch_free( a_vals[i].bv_val );
1139                         if ( last > i ) {
1140                                 a_vals[i] = a_vals[last];
1141                         }
1142                         BER_BVZERO( &a_vals[last] );
1143                         last--;
1144                         break;
1145
1146                 default:
1147                         /* leave attr untouched if massage failed */
1148                         if ( !BER_BVISNULL( &dn ) && a_vals[i].bv_val != dn.bv_val ) {
1149                                 ch_free( a_vals[i].bv_val );
1150                                 a_vals[i] = dn;
1151                         }
1152                         break;
1153                 }
1154         }
1155
1156         return 0;
1157 }
1158
1159 void
1160 rwm_mapping_free( void *v_mapping )
1161 {
1162         struct ldapmapping *mapping = v_mapping;
1163
1164         if ( !BER_BVISNULL( &mapping[0].m_src ) ) {
1165                 ch_free( mapping[0].m_src.bv_val );
1166         }
1167
1168         if ( mapping[0].m_flags & RWMMAP_F_FREE_SRC ) {
1169                 if ( mapping[0].m_flags & RWMMAP_F_IS_OC ) {
1170                         if ( mapping[0].m_src_oc ) {
1171                                 ch_free( mapping[0].m_src_oc );
1172                         }
1173
1174                 } else {
1175                         if ( mapping[0].m_src_ad ) {
1176                                 ch_free( mapping[0].m_src_ad );
1177                         }
1178                 }
1179         }
1180
1181         if ( !BER_BVISNULL( &mapping[0].m_dst ) ) {
1182                 ch_free( mapping[0].m_dst.bv_val );
1183         }
1184
1185         if ( mapping[0].m_flags & RWMMAP_F_FREE_DST ) {
1186                 if ( mapping[0].m_flags & RWMMAP_F_IS_OC ) {
1187                         if ( mapping[0].m_dst_oc ) {
1188                                 ch_free( mapping[0].m_dst_oc );
1189                         }
1190
1191                 } else {
1192                         if ( mapping[0].m_dst_ad ) {
1193                                 ch_free( mapping[0].m_dst_ad );
1194                         }
1195                 }
1196         }
1197
1198         ch_free( mapping );
1199
1200 }
1201
1202 #endif /* SLAPD_OVER_RWM */