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      *mapping;
 336
 337                 if ( rwm_mapping( at_map, &an[i].an_name, &mapping, remap ) ) {
 338                         continue;
 339                 }
 340
 341                 if ( !mapping ) {
 342                         na[ j++ ] = an[ i ].an_name.bv_val;
 343
 344                 } else if ( !BER_BVISNULL( &mapping->m_dst ) ) {
 345                         na[ j++ ] = mapping->m_dst.bv_val;
 346                 }
 347         }
 348
 349         if ( j == 0 && i != 0 ) {
 350                 na[ j++ ] = LDAP_NO_ATTRS;
 351         }
 352
 353         na[ j ] = NULL;
 354
 355         *mapped_attrs = na;
 356
 357         return LDAP_SUCCESS;
 358 }
 359
 360 static int
 361 map_attr_value(
 362                 dncookie                *dc,
 363                 AttributeDescription    **adp,
 364                 struct berval           *mapped_attr,
 365                 struct berval           *value,
 366                 struct berval           *mapped_value,
 367                 int                     remap )
 368 {
 369         struct berval           vtmp = BER_BVNULL;
 370         int                     freeval = 0;
 371         AttributeDescription    *ad = *adp;
 372         struct ldapmapping      *mapping = NULL;
 373
 374         rwm_mapping( &dc->rwmap->rwm_at, &ad->ad_cname, &mapping, remap );
 375         if ( mapping == NULL ) {
 376                 if ( dc->rwmap->rwm_at.drop_missing ) {
 377                         return -1;
 378                 }
 379
 380                 *mapped_attr = ad->ad_cname;
 381
 382         } else {
 383                 *mapped_attr = mapping->m_dst;
 384         }
 385
 386         if ( value != NULL ) {
 387                 assert( mapped_value != NULL );
 388
 389                 if ( ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 390                                 || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 391                 {
 392                         dncookie        fdc = *dc;
 393                         int             rc;
 394
 395 #ifdef ENABLE_REWRITE
 396                         fdc.ctx = "searchFilterAttrDN";
 397 #endif /* ENABLE_REWRITE */
 398
 399                         vtmp = *value;
 400                         rc = rwm_dn_massage_normalize( &fdc, value, &vtmp );
 401                         switch ( rc ) {
 402                         case LDAP_SUCCESS:
 403                                 if ( vtmp.bv_val != value->bv_val ) {
 404                                         freeval = 1;
 405                                 }
 406                                 break;
 407
 408                         case LDAP_UNWILLING_TO_PERFORM:
 409                         case LDAP_OTHER:
 410                         default:
 411                                 return -1;
 412                         }
 413
 414                 } else if ( ad == slap_schema.si_ad_objectClass
 415                                 || ad == slap_schema.si_ad_structuralObjectClass )
 416                 {
 417                         rwm_map( &dc->rwmap->rwm_oc, value, &vtmp, remap );
 418                         if ( BER_BVISNULL( &vtmp ) || BER_BVISEMPTY( &vtmp ) ) {
 419                                 vtmp = *value;
 420                         }
 421
 422                 } else {
 423                         vtmp = *value;
 424                 }
 425
 426                 filter_escape_value( &vtmp, mapped_value );
 427
 428                 if ( freeval ) {
 429                         ch_free( vtmp.bv_val );
 430                 }
 431         }
 432
 433         if ( mapping != NULL ) {
 434                 assert( mapping->m_dst_ad != NULL );
 435                 *adp = mapping->m_dst_ad;
 436         }
 437
 438         return 0;
 439 }
 440
 441 static int
 442 rwm_int_filter_map_rewrite(
 443                 dncookie                *dc,
 444                 Filter                  *f,
 445                 struct berval           *fstr )
 446 {
 447         int             i;
 448         Filter          *p;
 449         struct berval   atmp,
 450                         vtmp,
 451                         tmp;
 452         static struct berval
 453 #if 0
 454                         ber_bvfalse = BER_BVC( "(?=false)" ),
 455 #endif
 456                         /* better than nothing... */
 457                         ber_bvfalse = BER_BVC( "(!(objectClass=*))" ),
 458                         ber_bvtf_false = BER_BVC( "(|)" ),
 459 #if 0
 460                         ber_bvtrue = BER_BVC( "(?=true)" ),
 461 #endif
 462                         /* better than nothing... */
 463                         ber_bvtrue = BER_BVC( "(objectClass=*)" ),
 464                         ber_bvtf_true = BER_BVC( "(&)" ),
 465                         ber_bvundefined = BER_BVC( "(?=undefined)" ),
 466                         ber_bverror = BER_BVC( "(?=error)" ),
 467                         ber_bvunknown = BER_BVC( "(?=unknown)" ),
 468                         ber_bvnone = BER_BVC( "(?=none)" );
 469         ber_len_t       len;
 470
 471         if ( f == NULL ) {
 472                 ber_dupbv( fstr, &ber_bvnone );
 473                 return -1;
 474         }
 475
 476         switch ( f->f_choice ) {
 477         case LDAP_FILTER_EQUALITY:
 478                 if ( map_attr_value( dc, &f->f_av_desc, &atmp,
 479                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 480                 {
 481                         return -1;
 482                 }
 483
 484                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(=)" );
 485                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 486
 487                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=%s)",
 488                         atmp.bv_val, vtmp.bv_val );
 489
 490                 ch_free( vtmp.bv_val );
 491                 break;
 492
 493         case LDAP_FILTER_GE:
 494                 if ( map_attr_value( dc, &f->f_av_desc, &atmp,
 495                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 496                 {
 497                         return -1;
 498                 }
 499
 500                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(>=)" );
 501                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 502
 503                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s>=%s)",
 504                         atmp.bv_val, vtmp.bv_val );
 505
 506                 ch_free( vtmp.bv_val );
 507                 break;
 508
 509         case LDAP_FILTER_LE:
 510                 if ( map_attr_value( dc, &f->f_av_desc, &atmp,
 511                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 512                 {
 513                         return -1;
 514                 }
 515
 516                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(<=)" );
 517                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 518
 519                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s<=%s)",
 520                         atmp.bv_val, vtmp.bv_val );
 521
 522                 ch_free( vtmp.bv_val );
 523                 break;
 524
 525         case LDAP_FILTER_APPROX:
 526                 if ( map_attr_value( dc, &f->f_av_desc, &atmp,
 527                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 528                 {
 529                         return -1;
 530                 }
 531
 532                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(~=)" );
 533                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 534
 535                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s~=%s)",
 536                         atmp.bv_val, vtmp.bv_val );
 537
 538                 ch_free( vtmp.bv_val );
 539                 break;
 540
 541         case LDAP_FILTER_SUBSTRINGS:
 542                 if ( map_attr_value( dc, &f->f_sub_desc, &atmp,
 543                                         NULL, NULL, RWM_MAP ) )
 544                 {
 545                         return -1;
 546                 }
 547
 548                 /* cannot be a DN ... */
 549
 550                 fstr->bv_len = atmp.bv_len + STRLENOF( "(=*)" );
 551                 fstr->bv_val = ch_malloc( fstr->bv_len + 128 );
 552
 553                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
 554                         atmp.bv_val );
 555
 556                 if ( !BER_BVISNULL( &f->f_sub_initial ) ) {
 557                         len = fstr->bv_len;
 558
 559                         filter_escape_value( &f->f_sub_initial, &vtmp );
 560
 561                         fstr->bv_len += vtmp.bv_len;
 562                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 563
 564                         snprintf( &fstr->bv_val[len - 2], vtmp.bv_len + 3,
 565                                 /* "(attr=" */ "%s*)",
 566                                 vtmp.bv_val );
 567
 568                         ch_free( vtmp.bv_val );
 569                 }
 570
 571                 if ( f->f_sub_any != NULL ) {
 572                         for ( i = 0; !BER_BVISNULL( &f->f_sub_any[i] ); i++ ) {
 573                                 len = fstr->bv_len;
 574                                 filter_escape_value( &f->f_sub_any[i], &vtmp );
 575
 576                                 fstr->bv_len += vtmp.bv_len + 1;
 577                                 fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 578
 579                                 snprintf( &fstr->bv_val[len - 1], vtmp.bv_len + 3,
 580                                         /* "(attr=[init]*[any*]" */ "%s*)",
 581                                         vtmp.bv_val );
 582                                 ch_free( vtmp.bv_val );
 583                         }
 584                 }
 585
 586                 if ( !BER_BVISNULL( &f->f_sub_final ) ) {
 587                         len = fstr->bv_len;
 588
 589                         filter_escape_value( &f->f_sub_final, &vtmp );
 590
 591                         fstr->bv_len += vtmp.bv_len;
 592                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 593
 594                         snprintf( &fstr->bv_val[len - 1], vtmp.bv_len + 3,
 595                                 /* "(attr=[init*][any*]" */ "%s)",
 596                                 vtmp.bv_val );
 597
 598                         ch_free( vtmp.bv_val );
 599                 }
 600
 601                 break;
 602
 603         case LDAP_FILTER_PRESENT:
 604                 if ( map_attr_value( dc, &f->f_desc, &atmp,
 605                                         NULL, NULL, RWM_MAP ) )
 606                 {
 607                         return -1;
 608                 }
 609
 610                 fstr->bv_len = atmp.bv_len + STRLENOF( "(=*)" );
 611                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 612
 613                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
 614                         atmp.bv_val );
 615                 break;
 616
 617         case LDAP_FILTER_AND:
 618         case LDAP_FILTER_OR:
 619         case LDAP_FILTER_NOT:
 620                 fstr->bv_len = STRLENOF( "(%)" );
 621                 fstr->bv_val = ch_malloc( fstr->bv_len + 128 );
 622
 623                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%c)",
 624                         f->f_choice == LDAP_FILTER_AND ? '&' :
 625                         f->f_choice == LDAP_FILTER_OR ? '|' : '!' );
 626
 627                 for ( p = f->f_list; p != NULL; p = p->f_next ) {
 628                         len = fstr->bv_len;
 629
 630                         if ( rwm_int_filter_map_rewrite( dc, p, &vtmp ) )
 631                         {
 632                                 return -1;
 633                         }
 634
 635                         fstr->bv_len += vtmp.bv_len;
 636                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 637
 638                         snprintf( &fstr->bv_val[len-1], vtmp.bv_len + 2,
 639                                 /*"("*/ "%s)", vtmp.bv_val );
 640
 641                         ch_free( vtmp.bv_val );
 642                 }
 643
 644                 break;
 645
 646         case LDAP_FILTER_EXT: {
 647                 if ( f->f_mr_desc ) {
 648                         if ( map_attr_value( dc, &f->f_mr_desc, &atmp,
 649                                                 &f->f_mr_value, &vtmp, RWM_MAP ) )
 650                         {
 651                                 return -1;
 652                         }
 653
 654                 } else {
 655                         BER_BVSTR( &atmp, "" );
 656                         filter_escape_value( &f->f_mr_value, &vtmp );
 657                 }
 658
 659
 660                 fstr->bv_len = atmp.bv_len +
 661                         ( f->f_mr_dnattrs ? STRLENOF( ":dn" ) : 0 ) +
 662                         ( f->f_mr_rule_text.bv_len ? f->f_mr_rule_text.bv_len + 1 : 0 ) +
 663                         vtmp.bv_len + STRLENOF( "(:=)" );
 664                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 665
 666                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s%s%s:=%s)",
 667                         atmp.bv_val,
 668                         f->f_mr_dnattrs ? ":dn" : "",
 669                         !BER_BVISEMPTY( &f->f_mr_rule_text ) ? ":" : "",
 670                         !BER_BVISEMPTY( &f->f_mr_rule_text ) ? f->f_mr_rule_text.bv_val : "",
 671                         vtmp.bv_val );
 672                 ch_free( vtmp.bv_val );
 673                 break;
 674         }
 675
 676         case SLAPD_FILTER_COMPUTED:
 677                 switch ( f->f_result ) {
 678                 case LDAP_COMPARE_FALSE:
 679                         if ( dc->rwmap->rwm_flags & RWM_F_SUPPORT_T_F ) {
 680                                 tmp = ber_bvtf_false;
 681                         } else {
 682                                 tmp = ber_bvfalse;
 683                         }
 684                         break;
 685
 686                 case LDAP_COMPARE_TRUE:
 687                         if ( dc->rwmap->rwm_flags & RWM_F_SUPPORT_T_F ) {
 688                                 tmp = ber_bvtf_true;
 689                         } else {
 690                                 tmp = ber_bvtrue;
 691                         }
 692                         break;
 693
 694                 case SLAPD_COMPARE_UNDEFINED:
 695                         tmp = ber_bvundefined;
 696                         break;
 697
 698                 default:
 699                         tmp = ber_bverror;
 700                         break;
 701                 }
 702
 703                 ber_dupbv( fstr, &tmp );
 704                 break;
 705
 706         default:
 707                 ber_dupbv( fstr, &ber_bvunknown );
 708                 break;
 709         }
 710
 711         return 0;
 712 }
 713
 714 int
 715 rwm_filter_map_rewrite(
 716                 dncookie                *dc,
 717                 Filter                  *f,
 718                 struct berval           *fstr )
 719 {
 720         int             rc;
 721         dncookie        fdc;
 722         struct berval   ftmp;
 723
 724         rc = rwm_int_filter_map_rewrite( dc, f, fstr );
 725
 726 #ifdef ENABLE_REWRITE
 727         if ( rc != LDAP_SUCCESS ) {
 728                 return rc;
 729         }
 730
 731         fdc = *dc;
 732         ftmp = *fstr;
 733
 734         fdc.ctx = "searchFilter";
 735
 736         switch ( rewrite_session( fdc.rwmap->rwm_rw, fdc.ctx,
 737                                 ( !BER_BVISEMPTY( &ftmp ) ? ftmp.bv_val : "" ),
 738                                 fdc.conn, &fstr->bv_val ) )
 739         {
 740         case REWRITE_REGEXEC_OK:
 741                 if ( !BER_BVISNULL( fstr ) ) {
 742                         fstr->bv_len = strlen( fstr->bv_val );
 743                         ch_free( ftmp.bv_val );
 744
 745                 } else {
 746                         *fstr = ftmp;
 747                 }
 748
 749                 Debug( LDAP_DEBUG_ARGS,
 750                         "[rw] %s: \"%s\" -> \"%s\"\n",
 751                         fdc.ctx, ftmp.bv_val, fstr->bv_val );
 752                 rc = LDAP_SUCCESS;
 753                 break;
 754
 755         case REWRITE_REGEXEC_UNWILLING:
 756                 if ( fdc.rs ) {
 757                         fdc.rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 758                         fdc.rs->sr_text = "Operation not allowed";
 759                 }
 760                 rc = LDAP_UNWILLING_TO_PERFORM;
 761                 break;
 762
 763         case REWRITE_REGEXEC_ERR:
 764                 if ( fdc.rs ) {
 765                         fdc.rs->sr_err = LDAP_OTHER;
 766                         fdc.rs->sr_text = "Rewrite error";
 767                 }
 768                 rc = LDAP_OTHER;
 769                 break;
 770         }
 771
 772 #endif /* ENABLE_REWRITE */
 773         return rc;
 774 }
 775
 776 /*
 777  * I don't like this much, but we need two different
 778  * functions because different heap managers may be
 779  * in use in back-ldap/meta to reduce the amount of
 780  * calls to malloc routines, and some of the free()
 781  * routines may be macros with args
 782  */
 783 int
 784 rwm_referral_rewrite(
 785         Operation               *op,
 786         SlapReply               *rs,
 787         void                    *cookie,
 788         BerVarray               a_vals,
 789         BerVarray               *pa_nvals )
 790 {
 791         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 792         struct ldaprwmap        *rwmap =
 793                         (struct ldaprwmap *)on->on_bi.bi_private;
 794
 795         int                     i, last;
 796
 797         dncookie                dc;
 798         struct berval           dn = BER_BVNULL,
 799                                 ndn = BER_BVNULL;
 800
 801         assert( a_vals );
 802
 803         /*
 804          * Rewrite the dn if needed
 805          */
 806         dc.rwmap = rwmap;
 807 #ifdef ENABLE_REWRITE
 808         dc.conn = op->o_conn;
 809         dc.rs = rs;
 810         dc.ctx = (char *)cookie;
 811 #else /* ! ENABLE_REWRITE */
 812         dc.tofrom = ((int *)cookie)[0];
 813         dc.normalized = 0;
 814 #endif /* ! ENABLE_REWRITE */
 815
 816         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ )
 817                 ;
 818         last--;
 819
 820         if ( pa_nvals != NULL ) {
 821                 if ( *pa_nvals == NULL ) {
 822                         *pa_nvals = ch_malloc( ( last + 2 ) * sizeof(struct berval) );
 823                         memset( *pa_nvals, 0, ( last + 2 ) * sizeof(struct berval) );
 824                 }
 825         }
 826
 827         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
 828                 struct berval   olddn = BER_BVNULL,
 829                                 oldval;
 830                 int             rc;
 831                 LDAPURLDesc     *ludp;
 832
 833                 oldval = a_vals[i];
 834                 rc = ldap_url_parse( oldval.bv_val, &ludp );
 835                 if ( rc != LDAP_URL_SUCCESS ) {
 836                         /* leave attr untouched if massage failed */
 837                         if ( pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
 838                                 ber_dupbv( &(*pa_nvals)[i], &oldval );
 839                         }
 840                         continue;
 841                 }
 842
 843                 /* FIXME: URLs like "ldap:///dc=suffix" if passed
 844                  * thru ldap_url_parse() and ldap_url_desc2str()
 845                  * get rewritten as "ldap:///dc=suffix??base";
 846                  * we don't want this to occur... */
 847                 if ( ludp->lud_scope == LDAP_SCOPE_BASE ) {
 848                         ludp->lud_scope = LDAP_SCOPE_DEFAULT;
 849                 }
 850
 851                 ber_str2bv( ludp->lud_dn, 0, 0, &olddn );
 852
 853                 dn = olddn;
 854                 if ( pa_nvals ) {
 855                         ndn = olddn;
 856                         rc = rwm_dn_massage_pretty_normalize( &dc, &olddn,
 857                                         &dn, &ndn );
 858                 } else {
 859                         rc = rwm_dn_massage_pretty( &dc, &olddn, &dn );
 860                 }
 861
 862                 switch ( rc ) {
 863                 case LDAP_UNWILLING_TO_PERFORM:
 864                         /*
 865                          * FIXME: need to check if it may be considered
 866                          * legal to trim values when adding/modifying;
 867                          * it should be when searching (e.g. ACLs).
 868                          */
 869                         ch_free( a_vals[i].bv_val );
 870                         if (last > i ) {
 871                                 a_vals[i] = a_vals[last];
 872                                 if ( pa_nvals ) {
 873                                         (*pa_nvals)[i] = (*pa_nvals)[last];
 874                                 }
 875                         }
 876                         BER_BVZERO( &a_vals[last] );
 877                         if ( pa_nvals ) {
 878                                 BER_BVZERO( &(*pa_nvals)[last] );
 879                         }
 880                         last--;
 881                         break;
 882
 883                 case LDAP_SUCCESS:
 884                         if ( !BER_BVISNULL( &dn ) && dn.bv_val != olddn.bv_val ) {
 885                                 char    *newurl;
 886
 887                                 ludp->lud_dn = dn.bv_val;
 888                                 newurl = ldap_url_desc2str( ludp );
 889                                 ludp->lud_dn = olddn.bv_val;
 890                                 ch_free( dn.bv_val );
 891                                 if ( newurl == NULL ) {
 892                                         /* FIXME: leave attr untouched
 893                                          * even if ldap_url_desc2str failed...
 894                                          */
 895                                         break;
 896                                 }
 897
 898                                 ber_str2bv( newurl, 0, 1, &a_vals[i] );
 899                                 LDAP_FREE( newurl );
 900
 901                                 if ( pa_nvals ) {
 902                                         ludp->lud_dn = ndn.bv_val;
 903                                         newurl = ldap_url_desc2str( ludp );
 904                                         ludp->lud_dn = olddn.bv_val;
 905                                         ch_free( ndn.bv_val );
 906                                         if ( newurl == NULL ) {
 907                                                 /* FIXME: leave attr untouched
 908                                                  * even if ldap_url_desc2str failed...
 909                                                  */
 910                                                 ch_free( a_vals[i].bv_val );
 911                                                 a_vals[i] = oldval;
 912                                                 break;
 913                                         }
 914
 915                                         if ( !BER_BVISNULL( &(*pa_nvals)[i] ) ) {
 916                                                 ch_free( (*pa_nvals)[i].bv_val );
 917                                         }
 918                                         ber_str2bv( newurl, 0, 1, &(*pa_nvals)[i] );
 919                                         LDAP_FREE( newurl );
 920                                 }
 921
 922                                 ch_free( oldval.bv_val );
 923                                 ludp->lud_dn = olddn.bv_val;
 924                         }
 925                         break;
 926
 927                 default:
 928                         /* leave attr untouched if massage failed */
 929                         if ( pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
 930                                 ber_dupbv( &(*pa_nvals)[i], &a_vals[i] );
 931                         }
 932                         break;
 933                 }
 934                 ldap_free_urldesc( ludp );
 935         }
 936
 937         return 0;
 938 }
 939
 940 /*
 941  * I don't like this much, but we need two different
 942  * functions because different heap managers may be
 943  * in use in back-ldap/meta to reduce the amount of
 944  * calls to malloc routines, and some of the free()
 945  * routines may be macros with args
 946  */
 947 int
 948 rwm_dnattr_rewrite(
 949         Operation               *op,
 950         SlapReply               *rs,
 951         void                    *cookie,
 952         BerVarray               a_vals,
 953         BerVarray               *pa_nvals )
 954 {
 955         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 956         struct ldaprwmap        *rwmap =
 957                         (struct ldaprwmap *)on->on_bi.bi_private;
 958
 959         int                     i, last;
 960
 961         dncookie                dc;
 962         struct berval           dn = BER_BVNULL,
 963                                 ndn = BER_BVNULL;
 964         BerVarray               in;
 965
 966         if ( a_vals ) {
 967                 in = a_vals;
 968
 969         } else {
 970                 if ( pa_nvals == NULL || *pa_nvals == NULL ) {
 971                         return LDAP_OTHER;
 972                 }
 973                 in = *pa_nvals;
 974         }
 975
 976         /*
 977          * Rewrite the dn if needed
 978          */
 979         dc.rwmap = rwmap;
 980 #ifdef ENABLE_REWRITE
 981         dc.conn = op->o_conn;
 982         dc.rs = rs;
 983         dc.ctx = (char *)cookie;
 984 #else /* ! ENABLE_REWRITE */
 985         dc.tofrom = ((int *)cookie)[0];
 986         dc.normalized = 0;
 987 #endif /* ! ENABLE_REWRITE */
 988
 989         for ( last = 0; !BER_BVISNULL( &in[last] ); last++ );
 990         last--;
 991         if ( pa_nvals != NULL ) {
 992                 if ( *pa_nvals == NULL ) {
 993                         *pa_nvals = ch_malloc( ( last + 2 ) * sizeof(struct berval) );
 994                         memset( *pa_nvals, 0, ( last + 2 ) * sizeof(struct berval) );
 995                 }
 996         }
 997
 998         for ( i = 0; !BER_BVISNULL( &in[i] ); i++ ) {
 999                 int             rc;
1000
1001                 if ( a_vals ) {
1002                         dn = in[i];
1003                         if ( pa_nvals ) {
1004                                 ndn = (*pa_nvals)[i];
1005                                 rc = rwm_dn_massage_pretty_normalize( &dc, &in[i], &dn, &ndn );
1006                         } else {
1007                                 rc = rwm_dn_massage_pretty( &dc, &in[i], &dn );
1008                         }
1009                 } else {
1010                         ndn = in[i];
1011                         rc = rwm_dn_massage_normalize( &dc, &in[i], &ndn );
1012                 }
1013
1014                 switch ( rc ) {
1015                 case LDAP_UNWILLING_TO_PERFORM:
1016                         /*
1017                          * FIXME: need to check if it may be considered
1018                          * legal to trim values when adding/modifying;
1019                          * it should be when searching (e.g. ACLs).
1020                          */
1021                         ch_free( in[i].bv_val );
1022                         if (last > i ) {
1023                                 in[i] = in[last];
1024                                 if ( a_vals && pa_nvals ) {
1025                                         (*pa_nvals)[i] = (*pa_nvals)[last];
1026                                 }
1027                         }
1028                         BER_BVZERO( &in[last] );
1029                         if ( a_vals && pa_nvals ) {
1030                                 BER_BVZERO( &(*pa_nvals)[last] );
1031                         }
1032                         last--;
1033                         break;
1034
1035                 case LDAP_SUCCESS:
1036                         if ( a_vals ) {
1037                                 if ( !BER_BVISNULL( &dn ) && dn.bv_val != a_vals[i].bv_val ) {
1038                                         ch_free( a_vals[i].bv_val );
1039                                         a_vals[i] = dn;
1040
1041                                         if ( pa_nvals ) {
1042                                                 if ( !BER_BVISNULL( &(*pa_nvals)[i] ) ) {
1043                                                         ch_free( (*pa_nvals)[i].bv_val );
1044                                                 }
1045                                                 (*pa_nvals)[i] = ndn;
1046                                         }
1047                                 }
1048
1049                         } else {
1050                                 if ( !BER_BVISNULL( &ndn ) && ndn.bv_val != (*pa_nvals)[i].bv_val ) {
1051                                         ch_free( (*pa_nvals)[i].bv_val );
1052                                         (*pa_nvals)[i] = ndn;
1053                                 }
1054                         }
1055                         break;
1056
1057                 default:
1058                         /* leave attr untouched if massage failed */
1059                         if ( a_vals && pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
1060                                 dnNormalize( 0, NULL, NULL, &a_vals[i], &(*pa_nvals)[i], NULL );
1061                         }
1062                         break;
1063                 }
1064         }
1065
1066         return 0;
1067 }
1068
1069 int
1070 rwm_referral_result_rewrite(
1071         dncookie                *dc,
1072         BerVarray               a_vals
1073 )
1074 {
1075         int             i, last;
1076
1077         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ );
1078         last--;
1079
1080         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
1081                 struct berval   dn,
1082                                 olddn = BER_BVNULL;
1083                 int             rc;
1084                 LDAPURLDesc     *ludp;
1085
1086                 rc = ldap_url_parse( a_vals[i].bv_val, &ludp );
1087                 if ( rc != LDAP_URL_SUCCESS ) {
1088                         /* leave attr untouched if massage failed */
1089                         continue;
1090                 }
1091
1092                 /* FIXME: URLs like "ldap:///dc=suffix" if passed
1093                  * thru ldap_url_parse() and ldap_url_desc2str()
1094                  * get rewritten as "ldap:///dc=suffix??base";
1095                  * we don't want this to occur... */
1096                 if ( ludp->lud_scope == LDAP_SCOPE_BASE ) {
1097                         ludp->lud_scope = LDAP_SCOPE_DEFAULT;
1098                 }
1099
1100                 ber_str2bv( ludp->lud_dn, 0, 0, &olddn );
1101
1102                 dn = olddn;
1103                 rc = rwm_dn_massage_pretty( dc, &olddn, &dn );
1104                 switch ( rc ) {
1105                 case LDAP_UNWILLING_TO_PERFORM:
1106                         /*
1107                          * FIXME: need to check if it may be considered
1108                          * legal to trim values when adding/modifying;
1109                          * it should be when searching (e.g. ACLs).
1110                          */
1111                         ch_free( a_vals[i].bv_val );
1112                         if ( last > i ) {
1113                                 a_vals[i] = a_vals[last];
1114                         }
1115                         BER_BVZERO( &a_vals[last] );
1116                         last--;
1117                         i--;
1118                         break;
1119
1120                 default:
1121                         /* leave attr untouched if massage failed */
1122                         if ( !BER_BVISNULL( &dn ) && olddn.bv_val != dn.bv_val ) {
1123                                 char    *newurl;
1124
1125                                 ludp->lud_dn = dn.bv_val;
1126                                 newurl = ldap_url_desc2str( ludp );
1127                                 if ( newurl == NULL ) {
1128                                         /* FIXME: leave attr untouched
1129                                          * even if ldap_url_desc2str failed...
1130                                          */
1131                                         break;
1132                                 }
1133
1134                                 ch_free( a_vals[i].bv_val );
1135                                 ber_str2bv( newurl, 0, 1, &a_vals[i] );
1136                                 LDAP_FREE( newurl );
1137                                 ludp->lud_dn = olddn.bv_val;
1138                         }
1139                         break;
1140                 }
1141
1142                 ldap_free_urldesc( ludp );
1143         }
1144
1145         return 0;
1146 }
1147
1148 int
1149 rwm_dnattr_result_rewrite(
1150         dncookie                *dc,
1151         BerVarray               a_vals
1152 )
1153 {
1154         int             i, last;
1155
1156         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ );
1157         last--;
1158
1159         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
1160                 struct berval   dn;
1161                 int             rc;
1162
1163                 dn = a_vals[i];
1164                 rc = rwm_dn_massage_pretty( dc, &a_vals[i], &dn );
1165                 switch ( rc ) {
1166                 case LDAP_UNWILLING_TO_PERFORM:
1167                         /*
1168                          * FIXME: need to check if it may be considered
1169                          * legal to trim values when adding/modifying;
1170                          * it should be when searching (e.g. ACLs).
1171                          */
1172                         ch_free( a_vals[i].bv_val );
1173                         if ( last > i ) {
1174                                 a_vals[i] = a_vals[last];
1175                         }
1176                         BER_BVZERO( &a_vals[last] );
1177                         last--;
1178                         break;
1179
1180                 default:
1181                         /* leave attr untouched if massage failed */
1182                         if ( !BER_BVISNULL( &dn ) && a_vals[i].bv_val != dn.bv_val ) {
1183                                 ch_free( a_vals[i].bv_val );
1184                                 a_vals[i] = dn;
1185                         }
1186                         break;
1187                 }
1188         }
1189
1190         return 0;
1191 }
1192
1193 void
1194 rwm_mapping_free( void *v_mapping )
1195 {
1196         struct ldapmapping *mapping = v_mapping;
1197
1198         if ( !BER_BVISNULL( &mapping[0].m_src ) ) {
1199                 ch_free( mapping[0].m_src.bv_val );
1200         }
1201
1202         if ( mapping[0].m_flags & RWMMAP_F_FREE_SRC ) {
1203                 if ( mapping[0].m_flags & RWMMAP_F_IS_OC ) {
1204                         if ( mapping[0].m_src_oc ) {
1205                                 ch_free( mapping[0].m_src_oc );
1206                         }
1207
1208                 } else {
1209                         if ( mapping[0].m_src_ad ) {
1210                                 ch_free( mapping[0].m_src_ad );
1211                         }
1212                 }
1213         }
1214
1215         if ( !BER_BVISNULL( &mapping[0].m_dst ) ) {
1216                 ch_free( mapping[0].m_dst.bv_val );
1217         }
1218
1219         if ( mapping[0].m_flags & RWMMAP_F_FREE_DST ) {
1220                 if ( mapping[0].m_flags & RWMMAP_F_IS_OC ) {
1221                         if ( mapping[0].m_dst_oc ) {
1222                                 ch_free( mapping[0].m_dst_oc );
1223                         }
1224
1225                 } else {
1226                         if ( mapping[0].m_dst_ad ) {
1227                                 ch_free( mapping[0].m_dst_ad );
1228                         }
1229                 }
1230         }
1231
1232         ch_free( mapping );
1233
1234 }
1235
1236 #endif /* SLAPD_OVER_RWM */