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 1999-2010 The OpenLDAP Foundation.
   6  * Portions Copyright 1999-2003 Howard Chu.
   7  * Portions Copyright 2000-2003 Pierangelo Masarati.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted only as authorized by the OpenLDAP
  12  * Public License.
  13  *
  14  * A copy of this license is available in the file LICENSE in the
  15  * top-level directory of the distribution or, alternatively, at
  16  * <http://www.OpenLDAP.org/license.html>.
  17  */
  18 /* ACKNOWLEDGEMENTS:
  19  * This work was initially developed by the Howard Chu for inclusion
  20  * in OpenLDAP Software and subsequently enhanced by Pierangelo
  21  * Masarati.
  22  */
  23
  24 #include "portable.h"
  25
  26 #ifdef SLAPD_OVER_RWM
  27
  28 #include <stdio.h>
  29
  30 #include <ac/string.h>
  31 #include <ac/socket.h>
  32
  33 #include "slap.h"
  34 #include "rwm.h"
  35
  36 #undef ldap_debug       /* silence a warning in ldap-int.h */
  37 #include "../../../libraries/libldap/ldap-int.h"
  38
  39 int
  40 rwm_mapping_cmp( const void *c1, const void *c2 )
  41 {
  42         struct ldapmapping *map1 = (struct ldapmapping *)c1;
  43         struct ldapmapping *map2 = (struct ldapmapping *)c2;
  44         int rc = map1->m_src.bv_len - map2->m_src.bv_len;
  45
  46         if ( rc ) {
  47                 return rc;
  48         }
  49
  50         return strcasecmp( map1->m_src.bv_val, map2->m_src.bv_val );
  51 }
  52
  53 int
  54 rwm_mapping_dup( void *c1, void *c2 )
  55 {
  56         struct ldapmapping *map1 = (struct ldapmapping *)c1;
  57         struct ldapmapping *map2 = (struct ldapmapping *)c2;
  58         int rc = map1->m_src.bv_len - map2->m_src.bv_len;
  59
  60         if ( rc ) {
  61                 return 0;
  62         }
  63
  64         return ( ( strcasecmp( map1->m_src.bv_val, map2->m_src.bv_val ) == 0 ) ? -1 : 0 );
  65 }
  66
  67 int
  68 rwm_map_init( struct ldapmap *lm, struct ldapmapping **m )
  69 {
  70         struct ldapmapping      *mapping;
  71         const char              *text;
  72         int                     rc;
  73
  74         assert( m != NULL );
  75
  76         *m = NULL;
  77
  78         mapping = (struct ldapmapping *)ch_calloc( 2,
  79                         sizeof( struct ldapmapping ) );
  80         if ( mapping == NULL ) {
  81                 return LDAP_NO_MEMORY;
  82         }
  83
  84         /* NOTE: this is needed to make sure that
  85          *      rwm-map attribute *
  86          * does not  filter out all attributes including objectClass */
  87         rc = slap_str2ad( "objectClass", &mapping[0].m_src_ad, &text );
  88         if ( rc != LDAP_SUCCESS ) {
  89                 ch_free( mapping );
  90                 return rc;
  91         }
  92
  93         mapping[0].m_dst_ad = mapping[0].m_src_ad;
  94         ber_dupbv( &mapping[0].m_src, &mapping[0].m_src_ad->ad_cname );
  95         ber_dupbv( &mapping[0].m_dst, &mapping[0].m_src );
  96
  97         mapping[1].m_src = mapping[0].m_src;
  98         mapping[1].m_dst = mapping[0].m_dst;
  99         mapping[1].m_src_ad = mapping[0].m_src_ad;
 100         mapping[1].m_dst_ad = mapping[1].m_src_ad;
 101
 102         avl_insert( &lm->map, (caddr_t)&mapping[0],
 103                         rwm_mapping_cmp, rwm_mapping_dup );
 104         avl_insert( &lm->remap, (caddr_t)&mapping[1],
 105                         rwm_mapping_cmp, rwm_mapping_dup );
 106
 107         *m = mapping;
 108
 109         return rc;
 110 }
 111
 112 int
 113 rwm_mapping( struct ldapmap *map, struct berval *s, struct ldapmapping **m, int remap )
 114 {
 115         Avlnode *tree;
 116         struct ldapmapping fmapping;
 117
 118         if ( map == NULL ) {
 119                 return 0;
 120         }
 121
 122         assert( m != NULL );
 123
 124         /* let special attrnames slip through (ITS#5760) */
 125         if ( bvmatch( s, slap_bv_no_attrs )
 126                 || bvmatch( s, slap_bv_all_user_attrs )
 127                 || bvmatch( s, slap_bv_all_operational_attrs ) )
 128         {
 129                 *m = NULL;
 130                 return 0;
 131         }
 132
 133         if ( remap == RWM_REMAP ) {
 134                 tree = map->remap;
 135
 136         } else {
 137                 tree = map->map;
 138         }
 139
 140         fmapping.m_src = *s;
 141         *m = (struct ldapmapping *)avl_find( tree, (caddr_t)&fmapping,
 142                         rwm_mapping_cmp );
 143
 144         if ( *m == NULL ) {
 145                 return map->drop_missing;
 146         }
 147
 148         return 0;
 149 }
 150
 151 void
 152 rwm_map( struct ldapmap *map, struct berval *s, struct berval *bv, int remap )
 153 {
 154         struct ldapmapping *mapping;
 155
 156         /* map->map may be NULL when mapping is configured,
 157          * but map->remap can't */
 158         if ( map->remap == NULL ) {
 159                 *bv = *s;
 160                 return;
 161         }
 162
 163         BER_BVZERO( bv );
 164         ( void )rwm_mapping( map, s, &mapping, remap );
 165         if ( mapping != NULL ) {
 166                 if ( !BER_BVISNULL( &mapping->m_dst ) ) {
 167                         *bv = mapping->m_dst;
 168                 }
 169                 return;
 170         }
 171
 172         if ( !map->drop_missing ) {
 173                 *bv = *s;
 174         }
 175 }
 176
 177 /*
 178  * Map attribute names in place
 179  */
 180 int
 181 rwm_map_attrnames(
 182         struct ldapmap  *at_map,
 183         struct ldapmap  *oc_map,
 184         AttributeName   *an,
 185         AttributeName   **anp,
 186         int             remap )
 187 {
 188         int             i, j;
 189
 190         assert( anp != NULL );
 191
 192         *anp = NULL;
 193
 194         if ( an == NULL ) {
 195                 return LDAP_SUCCESS;
 196         }
 197
 198         for ( i = 0; !BER_BVISNULL( &an[i].an_name ); i++ )
 199                 /* just count */ ;
 200         *anp = ch_malloc( ( i + 1 )* sizeof( AttributeName ) );
 201         if ( *anp == NULL ) {
 202                 return LDAP_NO_MEMORY;
 203         }
 204
 205         for ( i = 0, j = 0; !BER_BVISNULL( &an[i].an_name ); i++ ) {
 206                 struct ldapmapping      *m;
 207                 int                     at_drop_missing = 0,
 208                                         oc_drop_missing = 0;
 209
 210                 if ( an[i].an_desc ) {
 211                         if ( !at_map ) {
 212                                 /* FIXME: better leave as is? */
 213                                 continue;
 214                         }
 215
 216                         at_drop_missing = rwm_mapping( at_map, &an[i].an_name, &m, remap );
 217                         if ( at_drop_missing || ( m && BER_BVISNULL( &m->m_dst ) ) ) {
 218                                 continue;
 219                         }
 220
 221                         if ( !m ) {
 222                                 (*anp)[j] = an[i];
 223                                 j++;
 224                                 continue;
 225                         }
 226
 227                         (*anp)[j] = an[i];
 228                         if ( remap == RWM_MAP ) {
 229                                 (*anp)[j].an_name = m->m_dst;
 230                                 (*anp)[j].an_desc = m->m_dst_ad;
 231                         } else {
 232                                 (*anp)[j].an_name = m->m_src;
 233                                 (*anp)[j].an_desc = m->m_src_ad;
 234
 235                         }
 236
 237                         j++;
 238                         continue;
 239
 240                 } else if ( an[i].an_oc ) {
 241                         if ( !oc_map ) {
 242                                 /* FIXME: better leave as is? */
 243                                 continue;
 244                         }
 245
 246                         oc_drop_missing = rwm_mapping( oc_map, &an[i].an_name, &m, remap );
 247
 248                         if ( oc_drop_missing || ( m && BER_BVISNULL( &m->m_dst ) ) ) {
 249                                 continue;
 250                         }
 251
 252                         if ( !m ) {
 253                                 (*anp)[j] = an[i];
 254                                 j++;
 255                                 continue;
 256                         }
 257
 258                         (*anp)[j] = an[i];
 259                         if ( remap == RWM_MAP ) {
 260                                 (*anp)[j].an_name = m->m_dst;
 261                                 (*anp)[j].an_oc = m->m_dst_oc;
 262                         } else {
 263                                 (*anp)[j].an_name = m->m_src;
 264                                 (*anp)[j].an_oc = m->m_src_oc;
 265                         }
 266
 267                 } else {
 268                         at_drop_missing = rwm_mapping( at_map, &an[i].an_name, &m, remap );
 269
 270                         if ( at_drop_missing || !m ) {
 271                                 oc_drop_missing = rwm_mapping( oc_map, &an[i].an_name, &m, remap );
 272
 273                                 /* if both at_map and oc_map required to drop missing,
 274                                  * then do it */
 275                                 if ( oc_drop_missing && at_drop_missing ) {
 276                                         continue;
 277                                 }
 278
 279                                 /* if no oc_map mapping was found and at_map required
 280                                  * to drop missing, then do it; otherwise, at_map wins
 281                                  * and an is considered an attr and is left unchanged */
 282                                 if ( !m ) {
 283                                         if ( at_drop_missing ) {
 284                                                 continue;
 285                                         }
 286                                         (*anp)[j] = an[i];
 287                                         j++;
 288                                         continue;
 289                                 }
 290
 291                                 if ( BER_BVISNULL( &m->m_dst ) ) {
 292                                         continue;
 293                                 }
 294
 295                                 (*anp)[j] = an[i];
 296                                 if ( remap == RWM_MAP ) {
 297                                         (*anp)[j].an_name = m->m_dst;
 298                                         (*anp)[j].an_oc = m->m_dst_oc;
 299                                 } else {
 300                                         (*anp)[j].an_name = m->m_src;
 301                                         (*anp)[j].an_oc = m->m_src_oc;
 302                                 }
 303                                 j++;
 304                                 continue;
 305                         }
 306
 307                         if ( !BER_BVISNULL( &m->m_dst ) ) {
 308                                 (*anp)[j] = an[i];
 309                                 if ( remap == RWM_MAP ) {
 310                                         (*anp)[j].an_name = m->m_dst;
 311                                         (*anp)[j].an_desc = m->m_dst_ad;
 312                                 } else {
 313                                         (*anp)[j].an_name = m->m_src;
 314                                         (*anp)[j].an_desc = m->m_src_ad;
 315                                 }
 316                                 j++;
 317                                 continue;
 318                         }
 319                 }
 320         }
 321
 322         if ( j == 0 && i != 0 ) {
 323                 memset( &(*anp)[0], 0, sizeof( AttributeName ) );
 324                 (*anp)[0].an_name = *slap_bv_no_attrs;
 325                 j = 1;
 326         }
 327         memset( &(*anp)[j], 0, sizeof( AttributeName ) );
 328
 329         return LDAP_SUCCESS;
 330 }
 331
 332 int
 333 rwm_map_attrs(
 334         struct ldapmap  *at_map,
 335         AttributeName   *an,
 336         int             remap,
 337         char            ***mapped_attrs )
 338 {
 339         int i, j;
 340         char **na;
 341
 342         if ( an == NULL ) {
 343                 *mapped_attrs = NULL;
 344                 return LDAP_SUCCESS;
 345         }
 346
 347         for ( i = 0; !BER_BVISNULL( &an[ i ].an_name ); i++ )
 348                 /* count'em */ ;
 349
 350         na = (char **)ch_calloc( i + 1, sizeof( char * ) );
 351         if ( na == NULL ) {
 352                 *mapped_attrs = NULL;
 353                 return LDAP_NO_MEMORY;
 354         }
 355
 356         for ( i = j = 0; !BER_BVISNULL( &an[i].an_name ); i++ ) {
 357                 struct ldapmapping      *mapping;
 358
 359                 if ( rwm_mapping( at_map, &an[i].an_name, &mapping, remap ) ) {
 360                         continue;
 361                 }
 362
 363                 if ( !mapping ) {
 364                         na[ j++ ] = an[ i ].an_name.bv_val;
 365
 366                 } else if ( !BER_BVISNULL( &mapping->m_dst ) ) {
 367                         na[ j++ ] = mapping->m_dst.bv_val;
 368                 }
 369         }
 370
 371         if ( j == 0 && i != 0 ) {
 372                 na[ j++ ] = LDAP_NO_ATTRS;
 373         }
 374
 375         na[ j ] = NULL;
 376
 377         *mapped_attrs = na;
 378
 379         return LDAP_SUCCESS;
 380 }
 381
 382 static int
 383 map_attr_value(
 384         dncookie                *dc,
 385         AttributeDescription    **adp,
 386         struct berval           *mapped_attr,
 387         struct berval           *value,
 388         struct berval           *mapped_value,
 389         int                     remap )
 390 {
 391         struct berval           vtmp = BER_BVNULL;
 392         int                     freeval = 0;
 393         AttributeDescription    *ad = *adp;
 394         struct ldapmapping      *mapping = NULL;
 395
 396         rwm_mapping( &dc->rwmap->rwm_at, &ad->ad_cname, &mapping, remap );
 397         if ( mapping == NULL ) {
 398                 if ( dc->rwmap->rwm_at.drop_missing ) {
 399                         return -1;
 400                 }
 401
 402                 *mapped_attr = ad->ad_cname;
 403
 404         } else {
 405                 *mapped_attr = mapping->m_dst;
 406         }
 407
 408         if ( value != NULL ) {
 409                 assert( mapped_value != NULL );
 410
 411                 if ( ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 412                                 || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 413                 {
 414                         dncookie        fdc = *dc;
 415                         int             rc;
 416
 417                         fdc.ctx = "searchFilterAttrDN";
 418
 419                         vtmp = *value;
 420                         rc = rwm_dn_massage_normalize( &fdc, value, &vtmp );
 421                         switch ( rc ) {
 422                         case LDAP_SUCCESS:
 423                                 if ( vtmp.bv_val != value->bv_val ) {
 424                                         freeval = 1;
 425                                 }
 426                                 break;
 427
 428                         case LDAP_UNWILLING_TO_PERFORM:
 429                         case LDAP_OTHER:
 430                         default:
 431                                 return -1;
 432                         }
 433
 434                 } else if ( ad->ad_type->sat_equality->smr_usage & SLAP_MR_MUTATION_NORMALIZER ) {
 435                         if ( ad->ad_type->sat_equality->smr_normalize(
 436                                 (SLAP_MR_DENORMALIZE|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX),
 437                                 NULL, NULL, value, &vtmp, NULL ) )
 438                         {
 439                                 return -1;
 440                         }
 441                         freeval = 1;
 442
 443                 } else if ( ad == slap_schema.si_ad_objectClass
 444                                 || ad == slap_schema.si_ad_structuralObjectClass )
 445                 {
 446                         rwm_map( &dc->rwmap->rwm_oc, value, &vtmp, remap );
 447                         if ( BER_BVISNULL( &vtmp ) || BER_BVISEMPTY( &vtmp ) ) {
 448                                 vtmp = *value;
 449                         }
 450
 451                 } else {
 452                         vtmp = *value;
 453                 }
 454
 455                 filter_escape_value( &vtmp, mapped_value );
 456
 457                 if ( freeval ) {
 458                         ch_free( vtmp.bv_val );
 459                 }
 460         }
 461
 462         if ( mapping != NULL ) {
 463                 assert( mapping->m_dst_ad != NULL );
 464                 *adp = mapping->m_dst_ad;
 465         }
 466
 467         return 0;
 468 }
 469
 470 static int
 471 rwm_int_filter_map_rewrite(
 472         Operation               *op,
 473         dncookie                *dc,
 474         Filter                  *f,
 475         struct berval           *fstr )
 476 {
 477         int             i;
 478         Filter          *p;
 479         AttributeDescription *ad;
 480         struct berval   atmp,
 481                         vtmp,
 482                         *tmp;
 483         static struct berval
 484                         /* better than nothing... */
 485                         ber_bvfalse = BER_BVC( "(!(objectClass=*))" ),
 486                         ber_bvtf_false = BER_BVC( "(|)" ),
 487                         /* better than nothing... */
 488                         ber_bvtrue = BER_BVC( "(objectClass=*)" ),
 489                         ber_bvtf_true = BER_BVC( "(&)" ),
 490 #if 0
 491                         /* no longer needed; preserved for completeness */
 492                         ber_bvundefined = BER_BVC( "(?=undefined)" ),
 493 #endif
 494                         ber_bverror = BER_BVC( "(?=error)" ),
 495                         ber_bvunknown = BER_BVC( "(?=unknown)" ),
 496                         ber_bvnone = BER_BVC( "(?=none)" );
 497         ber_len_t       len;
 498
 499         assert( fstr != NULL );
 500         BER_BVZERO( fstr );
 501
 502         if ( f == NULL ) {
 503                 ber_dupbv( fstr, &ber_bvnone );
 504                 return LDAP_OTHER;
 505         }
 506
 507         if ( f->f_choice & SLAPD_FILTER_UNDEFINED ) {
 508                 goto computed;
 509         }
 510
 511         switch ( f->f_choice & SLAPD_FILTER_MASK ) {
 512         case LDAP_FILTER_EQUALITY:
 513                 ad = f->f_av_desc;
 514                 if ( map_attr_value( dc, &ad, &atmp,
 515                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 516                 {
 517                         goto computed;
 518                 }
 519
 520                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(=)" );
 521                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 522
 523                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=%s)",
 524                         atmp.bv_val, vtmp.bv_len ? vtmp.bv_val : "" );
 525
 526                 ch_free( vtmp.bv_val );
 527                 break;
 528
 529         case LDAP_FILTER_GE:
 530                 ad = f->f_av_desc;
 531                 if ( map_attr_value( dc, &ad, &atmp,
 532                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 533                 {
 534                         goto computed;
 535                 }
 536
 537                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(>=)" );
 538                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 539
 540                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s>=%s)",
 541                         atmp.bv_val, vtmp.bv_len ? vtmp.bv_val : "" );
 542
 543                 ch_free( vtmp.bv_val );
 544                 break;
 545
 546         case LDAP_FILTER_LE:
 547                 ad = f->f_av_desc;
 548                 if ( map_attr_value( dc, &ad, &atmp,
 549                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 550                 {
 551                         goto computed;
 552                 }
 553
 554                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(<=)" );
 555                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 556
 557                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s<=%s)",
 558                         atmp.bv_val, vtmp.bv_len ? vtmp.bv_val : "" );
 559
 560                 ch_free( vtmp.bv_val );
 561                 break;
 562
 563         case LDAP_FILTER_APPROX:
 564                 ad = f->f_av_desc;
 565                 if ( map_attr_value( dc, &ad, &atmp,
 566                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 567                 {
 568                         goto computed;
 569                 }
 570
 571                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(~=)" );
 572                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 573
 574                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s~=%s)",
 575                         atmp.bv_val, vtmp.bv_len ? vtmp.bv_val : "" );
 576
 577                 ch_free( vtmp.bv_val );
 578                 break;
 579
 580         case LDAP_FILTER_SUBSTRINGS:
 581                 ad = f->f_sub_desc;
 582                 if ( map_attr_value( dc, &ad, &atmp,
 583                                         NULL, NULL, RWM_MAP ) )
 584                 {
 585                         goto computed;
 586                 }
 587
 588                 /* cannot be a DN ... */
 589
 590                 fstr->bv_len = atmp.bv_len + STRLENOF( "(=*)" );
 591                 fstr->bv_val = ch_malloc( fstr->bv_len + 128 );
 592
 593                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
 594                         atmp.bv_val );
 595
 596                 if ( !BER_BVISNULL( &f->f_sub_initial ) ) {
 597                         len = fstr->bv_len;
 598
 599                         filter_escape_value( &f->f_sub_initial, &vtmp );
 600
 601                         fstr->bv_len += vtmp.bv_len;
 602                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 603
 604                         snprintf( &fstr->bv_val[len - 2], vtmp.bv_len + 3,
 605                                 /* "(attr=" */ "%s*)",
 606                                 vtmp.bv_len ? vtmp.bv_val : "" );
 607
 608                         ch_free( vtmp.bv_val );
 609                 }
 610
 611                 if ( f->f_sub_any != NULL ) {
 612                         for ( i = 0; !BER_BVISNULL( &f->f_sub_any[i] ); i++ ) {
 613                                 len = fstr->bv_len;
 614                                 filter_escape_value( &f->f_sub_any[i], &vtmp );
 615
 616                                 fstr->bv_len += vtmp.bv_len + 1;
 617                                 fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 618
 619                                 snprintf( &fstr->bv_val[len - 1], vtmp.bv_len + 3,
 620                                         /* "(attr=[init]*[any*]" */ "%s*)",
 621                                         vtmp.bv_len ? vtmp.bv_val : "" );
 622                                 ch_free( vtmp.bv_val );
 623                         }
 624                 }
 625
 626                 if ( !BER_BVISNULL( &f->f_sub_final ) ) {
 627                         len = fstr->bv_len;
 628
 629                         filter_escape_value( &f->f_sub_final, &vtmp );
 630
 631                         fstr->bv_len += vtmp.bv_len;
 632                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 633
 634                         snprintf( &fstr->bv_val[len - 1], vtmp.bv_len + 3,
 635                                 /* "(attr=[init*][any*]" */ "%s)",
 636                                 vtmp.bv_len ? vtmp.bv_val : "" );
 637
 638                         ch_free( vtmp.bv_val );
 639                 }
 640
 641                 break;
 642
 643         case LDAP_FILTER_PRESENT:
 644                 ad = f->f_desc;
 645                 if ( map_attr_value( dc, &ad, &atmp,
 646                                         NULL, NULL, RWM_MAP ) )
 647                 {
 648                         goto computed;
 649                 }
 650
 651                 fstr->bv_len = atmp.bv_len + STRLENOF( "(=*)" );
 652                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 653
 654                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
 655                         atmp.bv_val );
 656                 break;
 657
 658         case LDAP_FILTER_AND:
 659         case LDAP_FILTER_OR:
 660         case LDAP_FILTER_NOT:
 661                 fstr->bv_len = STRLENOF( "(%)" );
 662                 fstr->bv_val = ch_malloc( fstr->bv_len + 128 );
 663
 664                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%c)",
 665                         f->f_choice == LDAP_FILTER_AND ? '&' :
 666                         f->f_choice == LDAP_FILTER_OR ? '|' : '!' );
 667
 668                 for ( p = f->f_list; p != NULL; p = p->f_next ) {
 669                         int     rc;
 670
 671                         len = fstr->bv_len;
 672
 673                         rc = rwm_int_filter_map_rewrite( op, dc, p, &vtmp );
 674                         if ( rc != LDAP_SUCCESS ) {
 675                                 return rc;
 676                         }
 677
 678                         fstr->bv_len += vtmp.bv_len;
 679                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 680
 681                         snprintf( &fstr->bv_val[len-1], vtmp.bv_len + 2,
 682                                 /*"("*/ "%s)", vtmp.bv_len ? vtmp.bv_val : "" );
 683
 684                         ch_free( vtmp.bv_val );
 685                 }
 686
 687                 break;
 688
 689         case LDAP_FILTER_EXT: {
 690                 if ( f->f_mr_desc ) {
 691                         ad = f->f_mr_desc;
 692                         if ( map_attr_value( dc, &ad, &atmp,
 693                                                 &f->f_mr_value, &vtmp, RWM_MAP ) )
 694                         {
 695                                 goto computed;
 696                         }
 697
 698                 } else {
 699                         BER_BVSTR( &atmp, "" );
 700                         filter_escape_value( &f->f_mr_value, &vtmp );
 701                 }
 702
 703
 704                 fstr->bv_len = atmp.bv_len +
 705                         ( f->f_mr_dnattrs ? STRLENOF( ":dn" ) : 0 ) +
 706                         ( f->f_mr_rule_text.bv_len ? f->f_mr_rule_text.bv_len + 1 : 0 ) +
 707                         vtmp.bv_len + STRLENOF( "(:=)" );
 708                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 709
 710                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s%s%s:=%s)",
 711                         atmp.bv_val,
 712                         f->f_mr_dnattrs ? ":dn" : "",
 713                         !BER_BVISEMPTY( &f->f_mr_rule_text ) ? ":" : "",
 714                         !BER_BVISEMPTY( &f->f_mr_rule_text ) ? f->f_mr_rule_text.bv_val : "",
 715                         vtmp.bv_len ? vtmp.bv_val : "" );
 716                 ch_free( vtmp.bv_val );
 717                 break;
 718         }
 719
 720         case -1:
 721 computed:;
 722                 filter_free_x( op, f, 0 );
 723                 f->f_choice = SLAPD_FILTER_COMPUTED;
 724                 f->f_result = SLAPD_COMPARE_UNDEFINED;
 725                 /* fallthru */
 726
 727         case SLAPD_FILTER_COMPUTED:
 728                 switch ( f->f_result ) {
 729                 case LDAP_COMPARE_FALSE:
 730                 /* FIXME: treat UNDEFINED as FALSE */
 731                 case SLAPD_COMPARE_UNDEFINED:
 732                         if ( dc->rwmap->rwm_flags & RWM_F_SUPPORT_T_F ) {
 733                                 tmp = &ber_bvtf_false;
 734                                 break;
 735                         }
 736                         tmp = &ber_bvfalse;
 737                         break;
 738
 739                 case LDAP_COMPARE_TRUE:
 740                         if ( dc->rwmap->rwm_flags & RWM_F_SUPPORT_T_F ) {
 741                                 tmp = &ber_bvtf_true;
 742                                 break;
 743                         }
 744                         tmp = &ber_bvtrue;
 745                         break;
 746
 747                 default:
 748                         tmp = &ber_bverror;
 749                         break;
 750                 }
 751
 752                 ber_dupbv( fstr, tmp );
 753                 break;
 754
 755         default:
 756                 ber_dupbv( fstr, &ber_bvunknown );
 757                 break;
 758         }
 759
 760         return LDAP_SUCCESS;
 761 }
 762
 763 int
 764 rwm_filter_map_rewrite(
 765         Operation               *op,
 766         dncookie                *dc,
 767         Filter                  *f,
 768         struct berval           *fstr )
 769 {
 770         int             rc;
 771         dncookie        fdc;
 772         struct berval   ftmp;
 773
 774         rc = rwm_int_filter_map_rewrite( op, dc, f, fstr );
 775
 776         if ( rc != 0 ) {
 777                 return rc;
 778         }
 779
 780         fdc = *dc;
 781         ftmp = *fstr;
 782
 783         fdc.ctx = "searchFilter";
 784
 785         switch ( rewrite_session( fdc.rwmap->rwm_rw, fdc.ctx,
 786                                 ( !BER_BVISEMPTY( &ftmp ) ? ftmp.bv_val : "" ),
 787                                 fdc.conn, &fstr->bv_val ) )
 788         {
 789         case REWRITE_REGEXEC_OK:
 790                 if ( !BER_BVISNULL( fstr ) ) {
 791                         fstr->bv_len = strlen( fstr->bv_val );
 792
 793                 } else {
 794                         *fstr = ftmp;
 795                 }
 796
 797                 Debug( LDAP_DEBUG_ARGS,
 798                         "[rw] %s: \"%s\" -> \"%s\"\n",
 799                         fdc.ctx, ftmp.bv_val, fstr->bv_val );
 800                 if ( fstr->bv_val != ftmp.bv_val ) {
 801                         ch_free( ftmp.bv_val );
 802                 }
 803                 rc = LDAP_SUCCESS;
 804                 break;
 805
 806         case REWRITE_REGEXEC_UNWILLING:
 807                 if ( fdc.rs ) {
 808                         fdc.rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 809                         fdc.rs->sr_text = "Operation not allowed";
 810                 }
 811                 rc = LDAP_UNWILLING_TO_PERFORM;
 812                 break;
 813
 814         case REWRITE_REGEXEC_ERR:
 815                 if ( fdc.rs ) {
 816                         fdc.rs->sr_err = LDAP_OTHER;
 817                         fdc.rs->sr_text = "Rewrite error";
 818                 }
 819                 rc = LDAP_OTHER;
 820                 break;
 821         }
 822
 823         return rc;
 824 }
 825
 826 /*
 827  * I don't like this much, but we need two different
 828  * functions because different heap managers may be
 829  * in use in back-ldap/meta to reduce the amount of
 830  * calls to malloc routines, and some of the free()
 831  * routines may be macros with args
 832  */
 833 int
 834 rwm_referral_rewrite(
 835         Operation               *op,
 836         SlapReply               *rs,
 837         void                    *cookie,
 838         BerVarray               a_vals,
 839         BerVarray               *pa_nvals )
 840 {
 841         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 842         struct ldaprwmap        *rwmap =
 843                         (struct ldaprwmap *)on->on_bi.bi_private;
 844
 845         int                     i, last;
 846
 847         dncookie                dc;
 848         struct berval           dn = BER_BVNULL,
 849                                 ndn = BER_BVNULL;
 850
 851         assert( a_vals != NULL );
 852
 853         /*
 854          * Rewrite the dn if needed
 855          */
 856         dc.rwmap = rwmap;
 857         dc.conn = op->o_conn;
 858         dc.rs = rs;
 859         dc.ctx = (char *)cookie;
 860
 861         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ )
 862                 ;
 863         last--;
 864
 865         if ( pa_nvals != NULL ) {
 866                 if ( *pa_nvals == NULL ) {
 867                         *pa_nvals = ch_malloc( ( last + 2 ) * sizeof(struct berval) );
 868                         memset( *pa_nvals, 0, ( last + 2 ) * sizeof(struct berval) );
 869                 }
 870         }
 871
 872         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
 873                 struct berval   olddn = BER_BVNULL,
 874                                 oldval;
 875                 int             rc;
 876                 LDAPURLDesc     *ludp;
 877
 878                 oldval = a_vals[i];
 879                 rc = ldap_url_parse( oldval.bv_val, &ludp );
 880                 if ( rc != LDAP_URL_SUCCESS ) {
 881                         /* leave attr untouched if massage failed */
 882                         if ( pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
 883                                 ber_dupbv( &(*pa_nvals)[i], &oldval );
 884                         }
 885                         continue;
 886                 }
 887
 888                 /* FIXME: URLs like "ldap:///dc=suffix" if passed
 889                  * thru ldap_url_parse() and ldap_url_desc2str()
 890                  * get rewritten as "ldap:///dc=suffix??base";
 891                  * we don't want this to occur... */
 892                 if ( ludp->lud_scope == LDAP_SCOPE_BASE ) {
 893                         ludp->lud_scope = LDAP_SCOPE_DEFAULT;
 894                 }
 895
 896                 ber_str2bv( ludp->lud_dn, 0, 0, &olddn );
 897
 898                 dn = olddn;
 899                 if ( pa_nvals ) {
 900                         ndn = olddn;
 901                         rc = rwm_dn_massage_pretty_normalize( &dc, &olddn,
 902                                         &dn, &ndn );
 903                 } else {
 904                         rc = rwm_dn_massage_pretty( &dc, &olddn, &dn );
 905                 }
 906
 907                 switch ( rc ) {
 908                 case LDAP_UNWILLING_TO_PERFORM:
 909                         /*
 910                          * FIXME: need to check if it may be considered
 911                          * legal to trim values when adding/modifying;
 912                          * it should be when searching (e.g. ACLs).
 913                          */
 914                         ch_free( a_vals[i].bv_val );
 915                         if (last > i ) {
 916                                 a_vals[i] = a_vals[last];
 917                                 if ( pa_nvals ) {
 918                                         (*pa_nvals)[i] = (*pa_nvals)[last];
 919                                 }
 920                         }
 921                         BER_BVZERO( &a_vals[last] );
 922                         if ( pa_nvals ) {
 923                                 BER_BVZERO( &(*pa_nvals)[last] );
 924                         }
 925                         last--;
 926                         break;
 927
 928                 case LDAP_SUCCESS:
 929                         if ( !BER_BVISNULL( &dn ) && dn.bv_val != olddn.bv_val ) {
 930                                 char    *newurl;
 931
 932                                 ludp->lud_dn = dn.bv_val;
 933                                 newurl = ldap_url_desc2str( ludp );
 934                                 ludp->lud_dn = olddn.bv_val;
 935                                 ch_free( dn.bv_val );
 936                                 if ( newurl == NULL ) {
 937                                         /* FIXME: leave attr untouched
 938                                          * even if ldap_url_desc2str failed...
 939                                          */
 940                                         break;
 941                                 }
 942
 943                                 ber_str2bv( newurl, 0, 1, &a_vals[i] );
 944                                 LDAP_FREE( newurl );
 945
 946                                 if ( pa_nvals ) {
 947                                         ludp->lud_dn = ndn.bv_val;
 948                                         newurl = ldap_url_desc2str( ludp );
 949                                         ludp->lud_dn = olddn.bv_val;
 950                                         ch_free( ndn.bv_val );
 951                                         if ( newurl == NULL ) {
 952                                                 /* FIXME: leave attr untouched
 953                                                  * even if ldap_url_desc2str failed...
 954                                                  */
 955                                                 ch_free( a_vals[i].bv_val );
 956                                                 a_vals[i] = oldval;
 957                                                 break;
 958                                         }
 959
 960                                         if ( !BER_BVISNULL( &(*pa_nvals)[i] ) ) {
 961                                                 ch_free( (*pa_nvals)[i].bv_val );
 962                                         }
 963                                         ber_str2bv( newurl, 0, 1, &(*pa_nvals)[i] );
 964                                         LDAP_FREE( newurl );
 965                                 }
 966
 967                                 ch_free( oldval.bv_val );
 968                                 ludp->lud_dn = olddn.bv_val;
 969                         }
 970                         break;
 971
 972                 default:
 973                         /* leave attr untouched if massage failed */
 974                         if ( pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
 975                                 ber_dupbv( &(*pa_nvals)[i], &a_vals[i] );
 976                         }
 977                         break;
 978                 }
 979                 ldap_free_urldesc( ludp );
 980         }
 981
 982         return 0;
 983 }
 984
 985 /*
 986  * I don't like this much, but we need two different
 987  * functions because different heap managers may be
 988  * in use in back-ldap/meta to reduce the amount of
 989  * calls to malloc routines, and some of the free()
 990  * routines may be macros with args
 991  */
 992 int
 993 rwm_dnattr_rewrite(
 994         Operation               *op,
 995         SlapReply               *rs,
 996         void                    *cookie,
 997         BerVarray               a_vals,
 998         BerVarray               *pa_nvals )
 999 {
1000         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
1001         struct ldaprwmap        *rwmap =
1002                         (struct ldaprwmap *)on->on_bi.bi_private;
1003
1004         int                     i, last;
1005
1006         dncookie                dc;
1007         struct berval           dn = BER_BVNULL,
1008                                 ndn = BER_BVNULL;
1009         BerVarray               in;
1010
1011         if ( a_vals ) {
1012                 in = a_vals;
1013
1014         } else {
1015                 if ( pa_nvals == NULL || *pa_nvals == NULL ) {
1016                         return LDAP_OTHER;
1017                 }
1018                 in = *pa_nvals;
1019         }
1020
1021         /*
1022          * Rewrite the dn if needed
1023          */
1024         dc.rwmap = rwmap;
1025         dc.conn = op->o_conn;
1026         dc.rs = rs;
1027         dc.ctx = (char *)cookie;
1028
1029         for ( last = 0; !BER_BVISNULL( &in[last] ); last++ );
1030         last--;
1031         if ( pa_nvals != NULL ) {
1032                 if ( *pa_nvals == NULL ) {
1033                         *pa_nvals = ch_malloc( ( last + 2 ) * sizeof(struct berval) );
1034                         memset( *pa_nvals, 0, ( last + 2 ) * sizeof(struct berval) );
1035                 }
1036         }
1037
1038         for ( i = 0; !BER_BVISNULL( &in[i] ); i++ ) {
1039                 int             rc;
1040
1041                 if ( a_vals ) {
1042                         dn = in[i];
1043                         if ( pa_nvals ) {
1044                                 ndn = (*pa_nvals)[i];
1045                                 rc = rwm_dn_massage_pretty_normalize( &dc, &in[i], &dn, &ndn );
1046                         } else {
1047                                 rc = rwm_dn_massage_pretty( &dc, &in[i], &dn );
1048                         }
1049                 } else {
1050                         ndn = in[i];
1051                         rc = rwm_dn_massage_normalize( &dc, &in[i], &ndn );
1052                 }
1053
1054                 switch ( rc ) {
1055                 case LDAP_UNWILLING_TO_PERFORM:
1056                         /*
1057                          * FIXME: need to check if it may be considered
1058                          * legal to trim values when adding/modifying;
1059                          * it should be when searching (e.g. ACLs).
1060                          */
1061                         ch_free( in[i].bv_val );
1062                         if (last > i ) {
1063                                 in[i] = in[last];
1064                                 if ( a_vals && pa_nvals ) {
1065                                         (*pa_nvals)[i] = (*pa_nvals)[last];
1066                                 }
1067                         }
1068                         BER_BVZERO( &in[last] );
1069                         if ( a_vals && pa_nvals ) {
1070                                 BER_BVZERO( &(*pa_nvals)[last] );
1071                         }
1072                         last--;
1073                         break;
1074
1075                 case LDAP_SUCCESS:
1076                         if ( a_vals ) {
1077                                 if ( !BER_BVISNULL( &dn ) && dn.bv_val != a_vals[i].bv_val ) {
1078                                         ch_free( a_vals[i].bv_val );
1079                                         a_vals[i] = dn;
1080
1081                                         if ( pa_nvals ) {
1082                                                 if ( !BER_BVISNULL( &(*pa_nvals)[i] ) ) {
1083                                                         ch_free( (*pa_nvals)[i].bv_val );
1084                                                 }
1085                                                 (*pa_nvals)[i] = ndn;
1086                                         }
1087                                 }
1088
1089                         } else {
1090                                 if ( !BER_BVISNULL( &ndn ) && ndn.bv_val != (*pa_nvals)[i].bv_val ) {
1091                                         ch_free( (*pa_nvals)[i].bv_val );
1092                                         (*pa_nvals)[i] = ndn;
1093                                 }
1094                         }
1095                         break;
1096
1097                 default:
1098                         /* leave attr untouched if massage failed */
1099                         if ( a_vals && pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
1100                                 dnNormalize( 0, NULL, NULL, &a_vals[i], &(*pa_nvals)[i], NULL );
1101                         }
1102                         break;
1103                 }
1104         }
1105
1106         return 0;
1107 }
1108
1109 int
1110 rwm_referral_result_rewrite(
1111         dncookie                *dc,
1112         BerVarray               a_vals )
1113 {
1114         int             i, last;
1115
1116         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ );
1117         last--;
1118
1119         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
1120                 struct berval   dn,
1121                                 olddn = BER_BVNULL;
1122                 int             rc;
1123                 LDAPURLDesc     *ludp;
1124
1125                 rc = ldap_url_parse( a_vals[i].bv_val, &ludp );
1126                 if ( rc != LDAP_URL_SUCCESS ) {
1127                         /* leave attr untouched if massage failed */
1128                         continue;
1129                 }
1130
1131                 /* FIXME: URLs like "ldap:///dc=suffix" if passed
1132                  * thru ldap_url_parse() and ldap_url_desc2str()
1133                  * get rewritten as "ldap:///dc=suffix??base";
1134                  * we don't want this to occur... */
1135                 if ( ludp->lud_scope == LDAP_SCOPE_BASE ) {
1136                         ludp->lud_scope = LDAP_SCOPE_DEFAULT;
1137                 }
1138
1139                 ber_str2bv( ludp->lud_dn, 0, 0, &olddn );
1140
1141                 dn = olddn;
1142                 rc = rwm_dn_massage_pretty( dc, &olddn, &dn );
1143                 switch ( rc ) {
1144                 case LDAP_UNWILLING_TO_PERFORM:
1145                         /*
1146                          * FIXME: need to check if it may be considered
1147                          * legal to trim values when adding/modifying;
1148                          * it should be when searching (e.g. ACLs).
1149                          */
1150                         ch_free( a_vals[i].bv_val );
1151                         if ( last > i ) {
1152                                 a_vals[i] = a_vals[last];
1153                         }
1154                         BER_BVZERO( &a_vals[last] );
1155                         last--;
1156                         i--;
1157                         break;
1158
1159                 default:
1160                         /* leave attr untouched if massage failed */
1161                         if ( !BER_BVISNULL( &dn ) && olddn.bv_val != dn.bv_val ) {
1162                                 char    *newurl;
1163
1164                                 ludp->lud_dn = dn.bv_val;
1165                                 newurl = ldap_url_desc2str( ludp );
1166                                 if ( newurl == NULL ) {
1167                                         /* FIXME: leave attr untouched
1168                                          * even if ldap_url_desc2str failed...
1169                                          */
1170                                         break;
1171                                 }
1172
1173                                 ch_free( a_vals[i].bv_val );
1174                                 ber_str2bv( newurl, 0, 1, &a_vals[i] );
1175                                 LDAP_FREE( newurl );
1176                                 ludp->lud_dn = olddn.bv_val;
1177                         }
1178                         break;
1179                 }
1180
1181                 ldap_free_urldesc( ludp );
1182         }
1183
1184         return 0;
1185 }
1186
1187 int
1188 rwm_dnattr_result_rewrite(
1189         dncookie                *dc,
1190         BerVarray               a_vals,
1191         BerVarray               a_nvals )
1192 {
1193         int             i, last;
1194
1195         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ );
1196         last--;
1197
1198         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
1199                 struct berval   pdn, ndn = BER_BVNULL;
1200                 int             rc;
1201
1202                 pdn = a_vals[i];
1203                 rc = rwm_dn_massage_pretty_normalize( dc, &a_vals[i], &pdn, &ndn );
1204                 switch ( rc ) {
1205                 case LDAP_UNWILLING_TO_PERFORM:
1206                         /*
1207                          * FIXME: need to check if it may be considered
1208                          * legal to trim values when adding/modifying;
1209                          * it should be when searching (e.g. ACLs).
1210                          */
1211                         assert( a_vals[i].bv_val != a_nvals[i].bv_val );
1212                         ch_free( a_vals[i].bv_val );
1213                         ch_free( a_nvals[i].bv_val );
1214                         if ( last > i ) {
1215                                 a_vals[i] = a_vals[last];
1216                                 a_nvals[i] = a_nvals[last];
1217                         }
1218                         BER_BVZERO( &a_vals[last] );
1219                         BER_BVZERO( &a_nvals[last] );
1220                         last--;
1221                         break;
1222
1223                 default:
1224                         /* leave attr untouched if massage failed */
1225                         if ( !BER_BVISNULL( &pdn ) && a_vals[i].bv_val != pdn.bv_val ) {
1226                                 ch_free( a_vals[i].bv_val );
1227                                 a_vals[i] = pdn;
1228                         }
1229                         if ( !BER_BVISNULL( &ndn ) && a_nvals[i].bv_val != ndn.bv_val ) {
1230                                 ch_free( a_nvals[i].bv_val );
1231                                 a_nvals[i] = ndn;
1232                         }
1233                         break;
1234                 }
1235         }
1236
1237         return 0;
1238 }
1239
1240 void
1241 rwm_mapping_dst_free( void *v_mapping )
1242 {
1243         struct ldapmapping *mapping = v_mapping;
1244
1245         if ( BER_BVISEMPTY( &mapping[0].m_dst ) ) {
1246                 rwm_mapping_free( &mapping[ -1 ] );
1247         }
1248 }
1249
1250 void
1251 rwm_mapping_free( void *v_mapping )
1252 {
1253         struct ldapmapping *mapping = v_mapping;
1254
1255         if ( !BER_BVISNULL( &mapping[0].m_src ) ) {
1256                 ch_free( mapping[0].m_src.bv_val );
1257         }
1258
1259         if ( mapping[0].m_flags & RWMMAP_F_FREE_SRC ) {
1260                 if ( mapping[0].m_flags & RWMMAP_F_IS_OC ) {
1261                         if ( mapping[0].m_src_oc ) {
1262                                 ch_free( mapping[0].m_src_oc );
1263                         }
1264
1265                 } else {
1266                         if ( mapping[0].m_src_ad ) {
1267                                 ch_free( mapping[0].m_src_ad );
1268                         }
1269                 }
1270         }
1271
1272         if ( !BER_BVISNULL( &mapping[0].m_dst ) ) {
1273                 ch_free( mapping[0].m_dst.bv_val );
1274         }
1275
1276         if ( mapping[0].m_flags & RWMMAP_F_FREE_DST ) {
1277                 if ( mapping[0].m_flags & RWMMAP_F_IS_OC ) {
1278                         if ( mapping[0].m_dst_oc ) {
1279                                 ch_free( mapping[0].m_dst_oc );
1280                         }
1281
1282                 } else {
1283                         if ( mapping[0].m_dst_ad ) {
1284                                 ch_free( mapping[0].m_dst_ad );
1285                         }
1286                 }
1287         }
1288
1289         ch_free( mapping );
1290
1291 }
1292
1293 #endif /* SLAPD_OVER_RWM */