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 1999-2006 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         /* FIXME: I don't think this is needed any more... */
  85         rc = slap_str2ad( "objectClass", &mapping[0].m_src_ad, &text );
  86         if ( rc != LDAP_SUCCESS ) {
  87                 ch_free( mapping );
  88                 return rc;
  89         }
  90
  91         mapping[0].m_dst_ad = mapping[0].m_src_ad;
  92         ber_dupbv( &mapping[0].m_src, &mapping[0].m_src_ad->ad_cname );
  93         ber_dupbv( &mapping[0].m_dst, &mapping[0].m_src );
  94
  95         mapping[1].m_src = mapping[0].m_src;
  96         mapping[1].m_dst = mapping[0].m_dst;
  97         mapping[1].m_src_ad = mapping[0].m_src_ad;
  98         mapping[1].m_dst_ad = mapping[1].m_src_ad;
  99
 100         avl_insert( &lm->map, (caddr_t)&mapping[0],
 101                         rwm_mapping_cmp, rwm_mapping_dup );
 102         avl_insert( &lm->remap, (caddr_t)&mapping[1],
 103                         rwm_mapping_cmp, rwm_mapping_dup );
 104
 105         *m = mapping;
 106
 107         return rc;
 108 }
 109
 110 int
 111 rwm_mapping( struct ldapmap *map, struct berval *s, struct ldapmapping **m, int remap )
 112 {
 113         Avlnode *tree;
 114         struct ldapmapping fmapping;
 115
 116         if ( map == NULL ) {
 117                 return 0;
 118         }
 119
 120         assert( m != NULL );
 121
 122         if ( remap == RWM_REMAP ) {
 123                 tree = map->remap;
 124
 125         } else {
 126                 tree = map->map;
 127         }
 128
 129         fmapping.m_src = *s;
 130         *m = (struct ldapmapping *)avl_find( tree, (caddr_t)&fmapping,
 131                         rwm_mapping_cmp );
 132
 133         if ( *m == NULL ) {
 134                 return map->drop_missing;
 135         }
 136
 137         return 0;
 138 }
 139
 140 void
 141 rwm_map( struct ldapmap *map, struct berval *s, struct berval *bv, int remap )
 142 {
 143         struct ldapmapping *mapping;
 144
 145         BER_BVZERO( bv );
 146         ( void )rwm_mapping( map, s, &mapping, remap );
 147         if ( mapping != NULL ) {
 148                 if ( !BER_BVISNULL( &mapping->m_dst ) ) {
 149                         *bv = mapping->m_dst;
 150                 }
 151                 return;
 152         }
 153
 154         if ( !map->drop_missing ) {
 155                 *bv = *s;
 156         }
 157 }
 158
 159 /*
 160  * Map attribute names in place
 161  */
 162 int
 163 rwm_map_attrnames(
 164         struct ldapmap  *at_map,
 165         struct ldapmap  *oc_map,
 166         AttributeName   *an,
 167         AttributeName   **anp,
 168         int             remap )
 169 {
 170         int             i, j;
 171
 172         assert( anp != NULL );
 173
 174         *anp = NULL;
 175
 176         if ( an == NULL ) {
 177                 return LDAP_SUCCESS;
 178         }
 179
 180         for ( i = 0; !BER_BVISNULL( &an[i].an_name ); i++ )
 181                 /* just count */ ;
 182         *anp = ch_malloc( ( i + 1 )* sizeof( AttributeName ) );
 183         if ( *anp == NULL ) {
 184                 return LDAP_NO_MEMORY;
 185         }
 186
 187         for ( i = 0, j = 0; !BER_BVISNULL( &an[i].an_name ); i++ ) {
 188                 struct ldapmapping      *m;
 189                 int                     at_drop_missing = 0,
 190                                         oc_drop_missing = 0;
 191
 192                 if ( an[i].an_desc ) {
 193                         if ( !at_map ) {
 194                                 /* FIXME: better leave as is? */
 195                                 continue;
 196                         }
 197
 198                         at_drop_missing = rwm_mapping( at_map, &an[i].an_name, &m, remap );
 199                         if ( at_drop_missing || ( m && BER_BVISNULL( &m->m_dst ) ) ) {
 200                                 continue;
 201                         }
 202
 203                         if ( !m ) {
 204                                 (*anp)[j] = an[i];
 205                                 j++;
 206                                 continue;
 207                         }
 208
 209                         (*anp)[j] = an[i];
 210                         if ( remap == RWM_MAP ) {
 211                                 (*anp)[j].an_name = m->m_dst;
 212                                 (*anp)[j].an_desc = m->m_dst_ad;
 213                         } else {
 214                                 (*anp)[j].an_name = m->m_src;
 215                                 (*anp)[j].an_desc = m->m_src_ad;
 216
 217                         }
 218
 219                         j++;
 220                         continue;
 221
 222                 } else if ( an[i].an_oc ) {
 223                         if ( !oc_map ) {
 224                                 /* FIXME: better leave as is? */
 225                                 continue;
 226                         }
 227
 228                         oc_drop_missing = rwm_mapping( oc_map, &an[i].an_name, &m, remap );
 229
 230                         if ( oc_drop_missing || ( m && BER_BVISNULL( &m->m_dst ) ) ) {
 231                                 continue;
 232                         }
 233
 234                         if ( !m ) {
 235                                 (*anp)[j] = an[i];
 236                                 j++;
 237                                 continue;
 238                         }
 239
 240                         (*anp)[j] = an[i];
 241                         if ( remap == RWM_MAP ) {
 242                                 (*anp)[j].an_name = m->m_dst;
 243                                 (*anp)[j].an_oc = m->m_dst_oc;
 244                         } else {
 245                                 (*anp)[j].an_name = m->m_src;
 246                                 (*anp)[j].an_oc = m->m_src_oc;
 247                         }
 248
 249                 } else {
 250                         at_drop_missing = rwm_mapping( at_map, &an[i].an_name, &m, remap );
 251
 252                         if ( at_drop_missing || !m ) {
 253                                 oc_drop_missing = rwm_mapping( oc_map, &an[i].an_name, &m, remap );
 254
 255                                 /* if both at_map and oc_map required to drop missing,
 256                                  * then do it */
 257                                 if ( oc_drop_missing && at_drop_missing ) {
 258                                         continue;
 259                                 }
 260
 261                                 /* if no oc_map mapping was found and at_map required
 262                                  * to drop missing, then do it; otherwise, at_map wins
 263                                  * and an is considered an attr and is left unchanged */
 264                                 if ( !m ) {
 265                                         if ( at_drop_missing ) {
 266                                                 continue;
 267                                         }
 268                                         (*anp)[j] = an[i];
 269                                         j++;
 270                                         continue;
 271                                 }
 272
 273                                 if ( BER_BVISNULL( &m->m_dst ) ) {
 274                                         continue;
 275                                 }
 276
 277                                 (*anp)[j] = an[i];
 278                                 if ( remap == RWM_MAP ) {
 279                                         (*anp)[j].an_name = m->m_dst;
 280                                         (*anp)[j].an_oc = m->m_dst_oc;
 281                                 } else {
 282                                         (*anp)[j].an_name = m->m_src;
 283                                         (*anp)[j].an_oc = m->m_src_oc;
 284                                 }
 285                                 j++;
 286                                 continue;
 287                         }
 288
 289                         if ( !BER_BVISNULL( &m->m_dst ) ) {
 290                                 (*anp)[j] = an[i];
 291                                 if ( remap == RWM_MAP ) {
 292                                         (*anp)[j].an_name = m->m_dst;
 293                                         (*anp)[j].an_desc = m->m_dst_ad;
 294                                 } else {
 295                                         (*anp)[j].an_name = m->m_src;
 296                                         (*anp)[j].an_desc = m->m_src_ad;
 297                                 }
 298                                 j++;
 299                                 continue;
 300                         }
 301                 }
 302         }
 303
 304         if ( j == 0 && i != 0 ) {
 305                 memset( &(*anp)[0], 0, sizeof( AttributeName ) );
 306                 BER_BVSTR( &(*anp)[0].an_name, LDAP_NO_ATTRS );
 307                 j = 1;
 308         }
 309         memset( &(*anp)[j], 0, sizeof( AttributeName ) );
 310
 311         return LDAP_SUCCESS;
 312 }
 313
 314 int
 315 rwm_map_attrs(
 316         struct ldapmap  *at_map,
 317         AttributeName   *an,
 318         int             remap,
 319         char            ***mapped_attrs )
 320 {
 321         int i, j;
 322         char **na;
 323
 324         if ( an == NULL ) {
 325                 *mapped_attrs = NULL;
 326                 return LDAP_SUCCESS;
 327         }
 328
 329         for ( i = 0; !BER_BVISNULL( &an[ i ].an_name ); i++ )
 330                 /* count'em */ ;
 331
 332         na = (char **)ch_calloc( i + 1, sizeof( char * ) );
 333         if ( na == NULL ) {
 334                 *mapped_attrs = NULL;
 335                 return LDAP_NO_MEMORY;
 336         }
 337
 338         for ( i = j = 0; !BER_BVISNULL( &an[i].an_name ); i++ ) {
 339                 struct ldapmapping      *mapping;
 340
 341                 if ( rwm_mapping( at_map, &an[i].an_name, &mapping, remap ) ) {
 342                         continue;
 343                 }
 344
 345                 if ( !mapping ) {
 346                         na[ j++ ] = an[ i ].an_name.bv_val;
 347
 348                 } else if ( !BER_BVISNULL( &mapping->m_dst ) ) {
 349                         na[ j++ ] = mapping->m_dst.bv_val;
 350                 }
 351         }
 352
 353         if ( j == 0 && i != 0 ) {
 354                 na[ j++ ] = LDAP_NO_ATTRS;
 355         }
 356
 357         na[ j ] = NULL;
 358
 359         *mapped_attrs = na;
 360
 361         return LDAP_SUCCESS;
 362 }
 363
 364 static int
 365 map_attr_value(
 366         dncookie                *dc,
 367         AttributeDescription    **adp,
 368         struct berval           *mapped_attr,
 369         struct berval           *value,
 370         struct berval           *mapped_value,
 371         int                     remap )
 372 {
 373         struct berval           vtmp = BER_BVNULL;
 374         int                     freeval = 0;
 375         AttributeDescription    *ad = *adp;
 376         struct ldapmapping      *mapping = NULL;
 377
 378         rwm_mapping( &dc->rwmap->rwm_at, &ad->ad_cname, &mapping, remap );
 379         if ( mapping == NULL ) {
 380                 if ( dc->rwmap->rwm_at.drop_missing ) {
 381                         return -1;
 382                 }
 383
 384                 *mapped_attr = ad->ad_cname;
 385
 386         } else {
 387                 *mapped_attr = mapping->m_dst;
 388         }
 389
 390         if ( value != NULL ) {
 391                 assert( mapped_value != NULL );
 392
 393                 if ( ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 394                                 || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 395                 {
 396                         dncookie        fdc = *dc;
 397                         int             rc;
 398
 399 #ifdef ENABLE_REWRITE
 400                         fdc.ctx = "searchFilterAttrDN";
 401 #endif /* ENABLE_REWRITE */
 402
 403                         vtmp = *value;
 404                         rc = rwm_dn_massage_normalize( &fdc, value, &vtmp );
 405                         switch ( rc ) {
 406                         case LDAP_SUCCESS:
 407                                 if ( vtmp.bv_val != value->bv_val ) {
 408                                         freeval = 1;
 409                                 }
 410                                 break;
 411
 412                         case LDAP_UNWILLING_TO_PERFORM:
 413                         case LDAP_OTHER:
 414                         default:
 415                                 return -1;
 416                         }
 417
 418                 } else if ( ad == slap_schema.si_ad_objectClass
 419                                 || ad == slap_schema.si_ad_structuralObjectClass )
 420                 {
 421                         rwm_map( &dc->rwmap->rwm_oc, value, &vtmp, remap );
 422                         if ( BER_BVISNULL( &vtmp ) || BER_BVISEMPTY( &vtmp ) ) {
 423                                 vtmp = *value;
 424                         }
 425
 426                 } else {
 427                         vtmp = *value;
 428                 }
 429
 430                 filter_escape_value( &vtmp, mapped_value );
 431
 432                 if ( freeval ) {
 433                         ch_free( vtmp.bv_val );
 434                 }
 435         }
 436
 437         if ( mapping != NULL ) {
 438                 assert( mapping->m_dst_ad != NULL );
 439                 *adp = mapping->m_dst_ad;
 440         }
 441
 442         return 0;
 443 }
 444
 445 static int
 446 rwm_int_filter_map_rewrite(
 447         Operation               *op,
 448         dncookie                *dc,
 449         Filter                  *f,
 450         struct berval           *fstr )
 451 {
 452         int             i;
 453         Filter          *p;
 454         struct berval   atmp,
 455                         vtmp,
 456                         *tmp;
 457         static struct berval
 458                         /* better than nothing... */
 459                         ber_bvfalse = BER_BVC( "(!(objectClass=*))" ),
 460                         ber_bvtf_false = BER_BVC( "(|)" ),
 461                         /* better than nothing... */
 462                         ber_bvtrue = BER_BVC( "(objectClass=*)" ),
 463                         ber_bvtf_true = BER_BVC( "(&)" ),
 464 #if 0
 465                         /* no longer needed; preserved for completeness */
 466                         ber_bvundefined = BER_BVC( "(?=undefined)" ),
 467 #endif
 468                         ber_bverror = BER_BVC( "(?=error)" ),
 469                         ber_bvunknown = BER_BVC( "(?=unknown)" ),
 470                         ber_bvnone = BER_BVC( "(?=none)" );
 471         ber_len_t       len;
 472
 473         assert( fstr != NULL );
 474         BER_BVZERO( fstr );
 475
 476         if ( f == NULL ) {
 477                 ber_dupbv( fstr, &ber_bvnone );
 478                 return LDAP_OTHER;
 479         }
 480
 481         switch ( f->f_choice ) {
 482         case LDAP_FILTER_EQUALITY:
 483                 if ( map_attr_value( dc, &f->f_av_desc, &atmp,
 484                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 485                 {
 486                         goto computed;
 487                 }
 488
 489                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(=)" );
 490                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 491
 492                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=%s)",
 493                         atmp.bv_val, vtmp.bv_val );
 494
 495                 ch_free( vtmp.bv_val );
 496                 break;
 497
 498         case LDAP_FILTER_GE:
 499                 if ( map_attr_value( dc, &f->f_av_desc, &atmp,
 500                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 501                 {
 502                         goto computed;
 503                 }
 504
 505                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(>=)" );
 506                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 507
 508                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s>=%s)",
 509                         atmp.bv_val, vtmp.bv_val );
 510
 511                 ch_free( vtmp.bv_val );
 512                 break;
 513
 514         case LDAP_FILTER_LE:
 515                 if ( map_attr_value( dc, &f->f_av_desc, &atmp,
 516                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 517                 {
 518                         goto computed;
 519                 }
 520
 521                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(<=)" );
 522                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 523
 524                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s<=%s)",
 525                         atmp.bv_val, vtmp.bv_val );
 526
 527                 ch_free( vtmp.bv_val );
 528                 break;
 529
 530         case LDAP_FILTER_APPROX:
 531                 if ( map_attr_value( dc, &f->f_av_desc, &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_val );
 542
 543                 ch_free( vtmp.bv_val );
 544                 break;
 545
 546         case LDAP_FILTER_SUBSTRINGS:
 547                 if ( map_attr_value( dc, &f->f_sub_desc, &atmp,
 548                                         NULL, NULL, RWM_MAP ) )
 549                 {
 550                         goto computed;
 551                 }
 552
 553                 /* cannot be a DN ... */
 554
 555                 fstr->bv_len = atmp.bv_len + STRLENOF( "(=*)" );
 556                 fstr->bv_val = ch_malloc( fstr->bv_len + 128 );
 557
 558                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
 559                         atmp.bv_val );
 560
 561                 if ( !BER_BVISNULL( &f->f_sub_initial ) ) {
 562                         len = fstr->bv_len;
 563
 564                         filter_escape_value( &f->f_sub_initial, &vtmp );
 565
 566                         fstr->bv_len += vtmp.bv_len;
 567                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 568
 569                         snprintf( &fstr->bv_val[len - 2], vtmp.bv_len + 3,
 570                                 /* "(attr=" */ "%s*)",
 571                                 vtmp.bv_val );
 572
 573                         ch_free( vtmp.bv_val );
 574                 }
 575
 576                 if ( f->f_sub_any != NULL ) {
 577                         for ( i = 0; !BER_BVISNULL( &f->f_sub_any[i] ); i++ ) {
 578                                 len = fstr->bv_len;
 579                                 filter_escape_value( &f->f_sub_any[i], &vtmp );
 580
 581                                 fstr->bv_len += vtmp.bv_len + 1;
 582                                 fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 583
 584                                 snprintf( &fstr->bv_val[len - 1], vtmp.bv_len + 3,
 585                                         /* "(attr=[init]*[any*]" */ "%s*)",
 586                                         vtmp.bv_val );
 587                                 ch_free( vtmp.bv_val );
 588                         }
 589                 }
 590
 591                 if ( !BER_BVISNULL( &f->f_sub_final ) ) {
 592                         len = fstr->bv_len;
 593
 594                         filter_escape_value( &f->f_sub_final, &vtmp );
 595
 596                         fstr->bv_len += vtmp.bv_len;
 597                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 598
 599                         snprintf( &fstr->bv_val[len - 1], vtmp.bv_len + 3,
 600                                 /* "(attr=[init*][any*]" */ "%s)",
 601                                 vtmp.bv_val );
 602
 603                         ch_free( vtmp.bv_val );
 604                 }
 605
 606                 break;
 607
 608         case LDAP_FILTER_PRESENT:
 609                 if ( map_attr_value( dc, &f->f_desc, &atmp,
 610                                         NULL, NULL, RWM_MAP ) )
 611                 {
 612                         goto computed;
 613                 }
 614
 615                 fstr->bv_len = atmp.bv_len + STRLENOF( "(=*)" );
 616                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 617
 618                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
 619                         atmp.bv_val );
 620                 break;
 621
 622         case LDAP_FILTER_AND:
 623         case LDAP_FILTER_OR:
 624         case LDAP_FILTER_NOT:
 625                 fstr->bv_len = STRLENOF( "(%)" );
 626                 fstr->bv_val = ch_malloc( fstr->bv_len + 128 );
 627
 628                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%c)",
 629                         f->f_choice == LDAP_FILTER_AND ? '&' :
 630                         f->f_choice == LDAP_FILTER_OR ? '|' : '!' );
 631
 632                 for ( p = f->f_list; p != NULL; p = p->f_next ) {
 633                         int     rc;
 634
 635                         len = fstr->bv_len;
 636
 637                         rc = rwm_int_filter_map_rewrite( op, dc, p, &vtmp );
 638                         if ( rc != LDAP_SUCCESS ) {
 639                                 return rc;
 640                         }
 641
 642                         fstr->bv_len += vtmp.bv_len;
 643                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 644
 645                         snprintf( &fstr->bv_val[len-1], vtmp.bv_len + 2,
 646                                 /*"("*/ "%s)", vtmp.bv_val );
 647
 648                         ch_free( vtmp.bv_val );
 649                 }
 650
 651                 break;
 652
 653         case LDAP_FILTER_EXT: {
 654                 if ( f->f_mr_desc ) {
 655                         if ( map_attr_value( dc, &f->f_mr_desc, &atmp,
 656                                                 &f->f_mr_value, &vtmp, RWM_MAP ) )
 657                         {
 658                                 goto computed;
 659                         }
 660
 661                 } else {
 662                         BER_BVSTR( &atmp, "" );
 663                         filter_escape_value( &f->f_mr_value, &vtmp );
 664                 }
 665
 666
 667                 fstr->bv_len = atmp.bv_len +
 668                         ( f->f_mr_dnattrs ? STRLENOF( ":dn" ) : 0 ) +
 669                         ( f->f_mr_rule_text.bv_len ? f->f_mr_rule_text.bv_len + 1 : 0 ) +
 670                         vtmp.bv_len + STRLENOF( "(:=)" );
 671                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 672
 673                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s%s%s:=%s)",
 674                         atmp.bv_val,
 675                         f->f_mr_dnattrs ? ":dn" : "",
 676                         !BER_BVISEMPTY( &f->f_mr_rule_text ) ? ":" : "",
 677                         !BER_BVISEMPTY( &f->f_mr_rule_text ) ? f->f_mr_rule_text.bv_val : "",
 678                         vtmp.bv_val );
 679                 ch_free( vtmp.bv_val );
 680                 break;
 681         }
 682
 683         case 0:
 684 computed:;
 685                 filter_free_x( op, f );
 686                 f->f_choice = SLAPD_FILTER_COMPUTED;
 687                 f->f_result = SLAPD_COMPARE_UNDEFINED;
 688                 /* fallthru */
 689
 690         case SLAPD_FILTER_COMPUTED:
 691                 switch ( f->f_result ) {
 692                 case LDAP_COMPARE_FALSE:
 693                 /* FIXME: treat UNDEFINED as FALSE */
 694                 case SLAPD_COMPARE_UNDEFINED:
 695                         if ( dc->rwmap->rwm_flags & RWM_F_SUPPORT_T_F ) {
 696                                 tmp = &ber_bvtf_false;
 697                                 break;
 698                         }
 699                         tmp = &ber_bvfalse;
 700                         break;
 701
 702                 case LDAP_COMPARE_TRUE:
 703                         if ( dc->rwmap->rwm_flags & RWM_F_SUPPORT_T_F ) {
 704                                 tmp = &ber_bvtf_true;
 705                                 break;
 706                         }
 707                         tmp = &ber_bvtrue;
 708                         break;
 709
 710                 default:
 711                         tmp = &ber_bverror;
 712                         break;
 713                 }
 714
 715                 ber_dupbv( fstr, tmp );
 716                 break;
 717
 718         default:
 719                 ber_dupbv( fstr, &ber_bvunknown );
 720                 break;
 721         }
 722
 723         return LDAP_SUCCESS;
 724 }
 725
 726 int
 727 rwm_filter_map_rewrite(
 728         Operation               *op,
 729         dncookie                *dc,
 730         Filter                  *f,
 731         struct berval           *fstr )
 732 {
 733         int             rc;
 734         dncookie        fdc;
 735         struct berval   ftmp;
 736
 737         rc = rwm_int_filter_map_rewrite( op, dc, f, fstr );
 738
 739 #ifdef ENABLE_REWRITE
 740         if ( rc != 0 ) {
 741                 return rc;
 742         }
 743
 744         fdc = *dc;
 745         ftmp = *fstr;
 746
 747         fdc.ctx = "searchFilter";
 748
 749         switch ( rewrite_session( fdc.rwmap->rwm_rw, fdc.ctx,
 750                                 ( !BER_BVISEMPTY( &ftmp ) ? ftmp.bv_val : "" ),
 751                                 fdc.conn, &fstr->bv_val ) )
 752         {
 753         case REWRITE_REGEXEC_OK:
 754                 if ( !BER_BVISNULL( fstr ) ) {
 755                         fstr->bv_len = strlen( fstr->bv_val );
 756                         ch_free( ftmp.bv_val );
 757
 758                 } else {
 759                         *fstr = ftmp;
 760                 }
 761
 762                 Debug( LDAP_DEBUG_ARGS,
 763                         "[rw] %s: \"%s\" -> \"%s\"\n",
 764                         fdc.ctx, ftmp.bv_val, fstr->bv_val );
 765                 rc = LDAP_SUCCESS;
 766                 break;
 767
 768         case REWRITE_REGEXEC_UNWILLING:
 769                 if ( fdc.rs ) {
 770                         fdc.rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 771                         fdc.rs->sr_text = "Operation not allowed";
 772                 }
 773                 rc = LDAP_UNWILLING_TO_PERFORM;
 774                 break;
 775
 776         case REWRITE_REGEXEC_ERR:
 777                 if ( fdc.rs ) {
 778                         fdc.rs->sr_err = LDAP_OTHER;
 779                         fdc.rs->sr_text = "Rewrite error";
 780                 }
 781                 rc = LDAP_OTHER;
 782                 break;
 783         }
 784 #endif /* ENABLE_REWRITE */
 785
 786         return rc;
 787 }
 788
 789 /*
 790  * I don't like this much, but we need two different
 791  * functions because different heap managers may be
 792  * in use in back-ldap/meta to reduce the amount of
 793  * calls to malloc routines, and some of the free()
 794  * routines may be macros with args
 795  */
 796 int
 797 rwm_referral_rewrite(
 798         Operation               *op,
 799         SlapReply               *rs,
 800         void                    *cookie,
 801         BerVarray               a_vals,
 802         BerVarray               *pa_nvals )
 803 {
 804         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 805         struct ldaprwmap        *rwmap =
 806                         (struct ldaprwmap *)on->on_bi.bi_private;
 807
 808         int                     i, last;
 809
 810         dncookie                dc;
 811         struct berval           dn = BER_BVNULL,
 812                                 ndn = BER_BVNULL;
 813
 814         assert( a_vals != NULL );
 815
 816         /*
 817          * Rewrite the dn if needed
 818          */
 819         dc.rwmap = rwmap;
 820 #ifdef ENABLE_REWRITE
 821         dc.conn = op->o_conn;
 822         dc.rs = rs;
 823         dc.ctx = (char *)cookie;
 824 #else /* ! ENABLE_REWRITE */
 825         dc.tofrom = ((int *)cookie)[0];
 826         dc.normalized = 0;
 827 #endif /* ! ENABLE_REWRITE */
 828
 829         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ )
 830                 ;
 831         last--;
 832
 833         if ( pa_nvals != NULL ) {
 834                 if ( *pa_nvals == NULL ) {
 835                         *pa_nvals = ch_malloc( ( last + 2 ) * sizeof(struct berval) );
 836                         memset( *pa_nvals, 0, ( last + 2 ) * sizeof(struct berval) );
 837                 }
 838         }
 839
 840         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
 841                 struct berval   olddn = BER_BVNULL,
 842                                 oldval;
 843                 int             rc;
 844                 LDAPURLDesc     *ludp;
 845
 846                 oldval = a_vals[i];
 847                 rc = ldap_url_parse( oldval.bv_val, &ludp );
 848                 if ( rc != LDAP_URL_SUCCESS ) {
 849                         /* leave attr untouched if massage failed */
 850                         if ( pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
 851                                 ber_dupbv( &(*pa_nvals)[i], &oldval );
 852                         }
 853                         continue;
 854                 }
 855
 856                 /* FIXME: URLs like "ldap:///dc=suffix" if passed
 857                  * thru ldap_url_parse() and ldap_url_desc2str()
 858                  * get rewritten as "ldap:///dc=suffix??base";
 859                  * we don't want this to occur... */
 860                 if ( ludp->lud_scope == LDAP_SCOPE_BASE ) {
 861                         ludp->lud_scope = LDAP_SCOPE_DEFAULT;
 862                 }
 863
 864                 ber_str2bv( ludp->lud_dn, 0, 0, &olddn );
 865
 866                 dn = olddn;
 867                 if ( pa_nvals ) {
 868                         ndn = olddn;
 869                         rc = rwm_dn_massage_pretty_normalize( &dc, &olddn,
 870                                         &dn, &ndn );
 871                 } else {
 872                         rc = rwm_dn_massage_pretty( &dc, &olddn, &dn );
 873                 }
 874
 875                 switch ( rc ) {
 876                 case LDAP_UNWILLING_TO_PERFORM:
 877                         /*
 878                          * FIXME: need to check if it may be considered
 879                          * legal to trim values when adding/modifying;
 880                          * it should be when searching (e.g. ACLs).
 881                          */
 882                         ch_free( a_vals[i].bv_val );
 883                         if (last > i ) {
 884                                 a_vals[i] = a_vals[last];
 885                                 if ( pa_nvals ) {
 886                                         (*pa_nvals)[i] = (*pa_nvals)[last];
 887                                 }
 888                         }
 889                         BER_BVZERO( &a_vals[last] );
 890                         if ( pa_nvals ) {
 891                                 BER_BVZERO( &(*pa_nvals)[last] );
 892                         }
 893                         last--;
 894                         break;
 895
 896                 case LDAP_SUCCESS:
 897                         if ( !BER_BVISNULL( &dn ) && dn.bv_val != olddn.bv_val ) {
 898                                 char    *newurl;
 899
 900                                 ludp->lud_dn = dn.bv_val;
 901                                 newurl = ldap_url_desc2str( ludp );
 902                                 ludp->lud_dn = olddn.bv_val;
 903                                 ch_free( dn.bv_val );
 904                                 if ( newurl == NULL ) {
 905                                         /* FIXME: leave attr untouched
 906                                          * even if ldap_url_desc2str failed...
 907                                          */
 908                                         break;
 909                                 }
 910
 911                                 ber_str2bv( newurl, 0, 1, &a_vals[i] );
 912                                 LDAP_FREE( newurl );
 913
 914                                 if ( pa_nvals ) {
 915                                         ludp->lud_dn = ndn.bv_val;
 916                                         newurl = ldap_url_desc2str( ludp );
 917                                         ludp->lud_dn = olddn.bv_val;
 918                                         ch_free( ndn.bv_val );
 919                                         if ( newurl == NULL ) {
 920                                                 /* FIXME: leave attr untouched
 921                                                  * even if ldap_url_desc2str failed...
 922                                                  */
 923                                                 ch_free( a_vals[i].bv_val );
 924                                                 a_vals[i] = oldval;
 925                                                 break;
 926                                         }
 927
 928                                         if ( !BER_BVISNULL( &(*pa_nvals)[i] ) ) {
 929                                                 ch_free( (*pa_nvals)[i].bv_val );
 930                                         }
 931                                         ber_str2bv( newurl, 0, 1, &(*pa_nvals)[i] );
 932                                         LDAP_FREE( newurl );
 933                                 }
 934
 935                                 ch_free( oldval.bv_val );
 936                                 ludp->lud_dn = olddn.bv_val;
 937                         }
 938                         break;
 939
 940                 default:
 941                         /* leave attr untouched if massage failed */
 942                         if ( pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
 943                                 ber_dupbv( &(*pa_nvals)[i], &a_vals[i] );
 944                         }
 945                         break;
 946                 }
 947                 ldap_free_urldesc( ludp );
 948         }
 949
 950         return 0;
 951 }
 952
 953 /*
 954  * I don't like this much, but we need two different
 955  * functions because different heap managers may be
 956  * in use in back-ldap/meta to reduce the amount of
 957  * calls to malloc routines, and some of the free()
 958  * routines may be macros with args
 959  */
 960 int
 961 rwm_dnattr_rewrite(
 962         Operation               *op,
 963         SlapReply               *rs,
 964         void                    *cookie,
 965         BerVarray               a_vals,
 966         BerVarray               *pa_nvals )
 967 {
 968         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 969         struct ldaprwmap        *rwmap =
 970                         (struct ldaprwmap *)on->on_bi.bi_private;
 971
 972         int                     i, last;
 973
 974         dncookie                dc;
 975         struct berval           dn = BER_BVNULL,
 976                                 ndn = BER_BVNULL;
 977         BerVarray               in;
 978
 979         if ( a_vals ) {
 980                 in = a_vals;
 981
 982         } else {
 983                 if ( pa_nvals == NULL || *pa_nvals == NULL ) {
 984                         return LDAP_OTHER;
 985                 }
 986                 in = *pa_nvals;
 987         }
 988
 989         /*
 990          * Rewrite the dn if needed
 991          */
 992         dc.rwmap = rwmap;
 993 #ifdef ENABLE_REWRITE
 994         dc.conn = op->o_conn;
 995         dc.rs = rs;
 996         dc.ctx = (char *)cookie;
 997 #else /* ! ENABLE_REWRITE */
 998         dc.tofrom = ((int *)cookie)[0];
 999         dc.normalized = 0;
1000 #endif /* ! ENABLE_REWRITE */
1001
1002         for ( last = 0; !BER_BVISNULL( &in[last] ); last++ );
1003         last--;
1004         if ( pa_nvals != NULL ) {
1005                 if ( *pa_nvals == NULL ) {
1006                         *pa_nvals = ch_malloc( ( last + 2 ) * sizeof(struct berval) );
1007                         memset( *pa_nvals, 0, ( last + 2 ) * sizeof(struct berval) );
1008                 }
1009         }
1010
1011         for ( i = 0; !BER_BVISNULL( &in[i] ); i++ ) {
1012                 int             rc;
1013
1014                 if ( a_vals ) {
1015                         dn = in[i];
1016                         if ( pa_nvals ) {
1017                                 ndn = (*pa_nvals)[i];
1018                                 rc = rwm_dn_massage_pretty_normalize( &dc, &in[i], &dn, &ndn );
1019                         } else {
1020                                 rc = rwm_dn_massage_pretty( &dc, &in[i], &dn );
1021                         }
1022                 } else {
1023                         ndn = in[i];
1024                         rc = rwm_dn_massage_normalize( &dc, &in[i], &ndn );
1025                 }
1026
1027                 switch ( rc ) {
1028                 case LDAP_UNWILLING_TO_PERFORM:
1029                         /*
1030                          * FIXME: need to check if it may be considered
1031                          * legal to trim values when adding/modifying;
1032                          * it should be when searching (e.g. ACLs).
1033                          */
1034                         ch_free( in[i].bv_val );
1035                         if (last > i ) {
1036                                 in[i] = in[last];
1037                                 if ( a_vals && pa_nvals ) {
1038                                         (*pa_nvals)[i] = (*pa_nvals)[last];
1039                                 }
1040                         }
1041                         BER_BVZERO( &in[last] );
1042                         if ( a_vals && pa_nvals ) {
1043                                 BER_BVZERO( &(*pa_nvals)[last] );
1044                         }
1045                         last--;
1046                         break;
1047
1048                 case LDAP_SUCCESS:
1049                         if ( a_vals ) {
1050                                 if ( !BER_BVISNULL( &dn ) && dn.bv_val != a_vals[i].bv_val ) {
1051                                         ch_free( a_vals[i].bv_val );
1052                                         a_vals[i] = dn;
1053
1054                                         if ( pa_nvals ) {
1055                                                 if ( !BER_BVISNULL( &(*pa_nvals)[i] ) ) {
1056                                                         ch_free( (*pa_nvals)[i].bv_val );
1057                                                 }
1058                                                 (*pa_nvals)[i] = ndn;
1059                                         }
1060                                 }
1061
1062                         } else {
1063                                 if ( !BER_BVISNULL( &ndn ) && ndn.bv_val != (*pa_nvals)[i].bv_val ) {
1064                                         ch_free( (*pa_nvals)[i].bv_val );
1065                                         (*pa_nvals)[i] = ndn;
1066                                 }
1067                         }
1068                         break;
1069
1070                 default:
1071                         /* leave attr untouched if massage failed */
1072                         if ( a_vals && pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
1073                                 dnNormalize( 0, NULL, NULL, &a_vals[i], &(*pa_nvals)[i], NULL );
1074                         }
1075                         break;
1076                 }
1077         }
1078
1079         return 0;
1080 }
1081
1082 int
1083 rwm_referral_result_rewrite(
1084         dncookie                *dc,
1085         BerVarray               a_vals )
1086 {
1087         int             i, last;
1088
1089         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ );
1090         last--;
1091
1092         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
1093                 struct berval   dn,
1094                                 olddn = BER_BVNULL;
1095                 int             rc;
1096                 LDAPURLDesc     *ludp;
1097
1098                 rc = ldap_url_parse( a_vals[i].bv_val, &ludp );
1099                 if ( rc != LDAP_URL_SUCCESS ) {
1100                         /* leave attr untouched if massage failed */
1101                         continue;
1102                 }
1103
1104                 /* FIXME: URLs like "ldap:///dc=suffix" if passed
1105                  * thru ldap_url_parse() and ldap_url_desc2str()
1106                  * get rewritten as "ldap:///dc=suffix??base";
1107                  * we don't want this to occur... */
1108                 if ( ludp->lud_scope == LDAP_SCOPE_BASE ) {
1109                         ludp->lud_scope = LDAP_SCOPE_DEFAULT;
1110                 }
1111
1112                 ber_str2bv( ludp->lud_dn, 0, 0, &olddn );
1113
1114                 dn = olddn;
1115                 rc = rwm_dn_massage_pretty( dc, &olddn, &dn );
1116                 switch ( rc ) {
1117                 case LDAP_UNWILLING_TO_PERFORM:
1118                         /*
1119                          * FIXME: need to check if it may be considered
1120                          * legal to trim values when adding/modifying;
1121                          * it should be when searching (e.g. ACLs).
1122                          */
1123                         ch_free( a_vals[i].bv_val );
1124                         if ( last > i ) {
1125                                 a_vals[i] = a_vals[last];
1126                         }
1127                         BER_BVZERO( &a_vals[last] );
1128                         last--;
1129                         i--;
1130                         break;
1131
1132                 default:
1133                         /* leave attr untouched if massage failed */
1134                         if ( !BER_BVISNULL( &dn ) && olddn.bv_val != dn.bv_val ) {
1135                                 char    *newurl;
1136
1137                                 ludp->lud_dn = dn.bv_val;
1138                                 newurl = ldap_url_desc2str( ludp );
1139                                 if ( newurl == NULL ) {
1140                                         /* FIXME: leave attr untouched
1141                                          * even if ldap_url_desc2str failed...
1142                                          */
1143                                         break;
1144                                 }
1145
1146                                 ch_free( a_vals[i].bv_val );
1147                                 ber_str2bv( newurl, 0, 1, &a_vals[i] );
1148                                 LDAP_FREE( newurl );
1149                                 ludp->lud_dn = olddn.bv_val;
1150                         }
1151                         break;
1152                 }
1153
1154                 ldap_free_urldesc( ludp );
1155         }
1156
1157         return 0;
1158 }
1159
1160 int
1161 rwm_dnattr_result_rewrite(
1162         dncookie                *dc,
1163         BerVarray               a_vals )
1164 {
1165         int             i, last;
1166
1167         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ );
1168         last--;
1169
1170         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
1171                 struct berval   dn;
1172                 int             rc;
1173
1174                 dn = a_vals[i];
1175                 rc = rwm_dn_massage_pretty( dc, &a_vals[i], &dn );
1176                 switch ( rc ) {
1177                 case LDAP_UNWILLING_TO_PERFORM:
1178                         /*
1179                          * FIXME: need to check if it may be considered
1180                          * legal to trim values when adding/modifying;
1181                          * it should be when searching (e.g. ACLs).
1182                          */
1183                         ch_free( a_vals[i].bv_val );
1184                         if ( last > i ) {
1185                                 a_vals[i] = a_vals[last];
1186                         }
1187                         BER_BVZERO( &a_vals[last] );
1188                         last--;
1189                         break;
1190
1191                 default:
1192                         /* leave attr untouched if massage failed */
1193                         if ( !BER_BVISNULL( &dn ) && a_vals[i].bv_val != dn.bv_val ) {
1194                                 ch_free( a_vals[i].bv_val );
1195                                 a_vals[i] = dn;
1196                         }
1197                         break;
1198                 }
1199         }
1200
1201         return 0;
1202 }
1203
1204 void
1205 rwm_mapping_dst_free( void *v_mapping )
1206 {
1207         struct ldapmapping *mapping = v_mapping;
1208
1209         if ( BER_BVISEMPTY( &mapping[0].m_dst ) ) {
1210                 rwm_mapping_free( &mapping[ -1 ] );
1211         }
1212 }
1213
1214 void
1215 rwm_mapping_free( void *v_mapping )
1216 {
1217         struct ldapmapping *mapping = v_mapping;
1218
1219         if ( !BER_BVISNULL( &mapping[0].m_src ) ) {
1220                 ch_free( mapping[0].m_src.bv_val );
1221         }
1222
1223         if ( mapping[0].m_flags & RWMMAP_F_FREE_SRC ) {
1224                 if ( mapping[0].m_flags & RWMMAP_F_IS_OC ) {
1225                         if ( mapping[0].m_src_oc ) {
1226                                 ch_free( mapping[0].m_src_oc );
1227                         }
1228
1229                 } else {
1230                         if ( mapping[0].m_src_ad ) {
1231                                 ch_free( mapping[0].m_src_ad );
1232                         }
1233                 }
1234         }
1235
1236         if ( !BER_BVISNULL( &mapping[0].m_dst ) ) {
1237                 ch_free( mapping[0].m_dst.bv_val );
1238         }
1239
1240         if ( mapping[0].m_flags & RWMMAP_F_FREE_DST ) {
1241                 if ( mapping[0].m_flags & RWMMAP_F_IS_OC ) {
1242                         if ( mapping[0].m_dst_oc ) {
1243                                 ch_free( mapping[0].m_dst_oc );
1244                         }
1245
1246                 } else {
1247                         if ( mapping[0].m_dst_ad ) {
1248                                 ch_free( mapping[0].m_dst_ad );
1249                         }
1250                 }
1251         }
1252
1253         ch_free( mapping );
1254
1255 }
1256
1257 #endif /* SLAPD_OVER_RWM */