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

   1 /* rwmmap.c - rewrite/mapping routines */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1999-2005 The OpenLDAP Foundation.
   6  * Portions Copyright 1999-2003 Howard Chu.
   7  * Portions Copyright 2000-2003 Pierangelo Masarati.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted only as authorized by the OpenLDAP
  12  * Public License.
  13  *
  14  * A copy of this license is available in the file LICENSE in the
  15  * top-level directory of the distribution or, alternatively, at
  16  * <http://www.OpenLDAP.org/license.html>.
  17  */
  18 /* ACKNOWLEDGEMENTS:
  19  * This work was initially developed by the Howard Chu for inclusion
  20  * in OpenLDAP Software and subsequently enhanced by Pierangelo
  21  * Masarati.
  22  */
  23
  24 #include "portable.h"
  25
  26 #ifdef SLAPD_OVER_RWM
  27
  28 #include <stdio.h>
  29
  30 #include <ac/string.h>
  31 #include <ac/socket.h>
  32
  33 #include "slap.h"
  34 #include "rwm.h"
  35
  36 #undef ldap_debug       /* silence a warning in ldap-int.h */
  37 #include "../../../libraries/libldap/ldap-int.h"
  38
  39 int
  40 rwm_mapping_cmp( const void *c1, const void *c2 )
  41 {
  42         struct ldapmapping *map1 = (struct ldapmapping *)c1;
  43         struct ldapmapping *map2 = (struct ldapmapping *)c2;
  44         int rc = map1->m_src.bv_len - map2->m_src.bv_len;
  45
  46         if ( rc ) {
  47                 return rc;
  48         }
  49
  50         return strcasecmp( map1->m_src.bv_val, map2->m_src.bv_val );
  51 }
  52
  53 int
  54 rwm_mapping_dup( void *c1, void *c2 )
  55 {
  56         struct ldapmapping *map1 = (struct ldapmapping *)c1;
  57         struct ldapmapping *map2 = (struct ldapmapping *)c2;
  58         int rc = map1->m_src.bv_len - map2->m_src.bv_len;
  59
  60         if ( rc ) {
  61                 return 0;
  62         }
  63
  64         return ( ( strcasecmp( map1->m_src.bv_val, map2->m_src.bv_val ) == 0 ) ? -1 : 0 );
  65 }
  66
  67 int
  68 rwm_map_init( struct ldapmap *lm, struct ldapmapping **m )
  69 {
  70         struct ldapmapping      *mapping;
  71         const char              *text;
  72         int                     rc;
  73
  74         assert( m != 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                 return rc;
  88         }
  89
  90         mapping[0].m_dst_ad = mapping[0].m_src_ad;
  91         ber_dupbv( &mapping[0].m_src, &mapping[0].m_src_ad->ad_cname );
  92         ber_dupbv( &mapping[0].m_dst, &mapping[0].m_src );
  93
  94         mapping[1].m_src = mapping[0].m_src;
  95         mapping[1].m_dst = mapping[0].m_dst;
  96         mapping[1].m_src_ad = mapping[0].m_src_ad;
  97         mapping[1].m_dst_ad = mapping[1].m_src_ad;
  98
  99         avl_insert( &lm->map, (caddr_t)&mapping[0],
 100                         rwm_mapping_cmp, rwm_mapping_dup );
 101         avl_insert( &lm->remap, (caddr_t)&mapping[1],
 102                         rwm_mapping_cmp, rwm_mapping_dup );
 103
 104         *m = mapping;
 105
 106         return rc;
 107 }
 108
 109 int
 110 rwm_mapping( struct ldapmap *map, struct berval *s, struct ldapmapping **m, int remap )
 111 {
 112         Avlnode *tree;
 113         struct ldapmapping fmapping;
 114
 115         assert( m != NULL );
 116
 117         if ( remap == RWM_REMAP ) {
 118                 tree = map->remap;
 119
 120         } else {
 121                 tree = map->map;
 122         }
 123
 124         fmapping.m_src = *s;
 125         *m = (struct ldapmapping *)avl_find( tree, (caddr_t)&fmapping,
 126                         rwm_mapping_cmp );
 127
 128         if ( *m == NULL ) {
 129                 return map->drop_missing;
 130         }
 131
 132         return 0;
 133 }
 134
 135 void
 136 rwm_map( struct ldapmap *map, struct berval *s, struct berval *bv, int remap )
 137 {
 138         struct ldapmapping *mapping;
 139
 140         BER_BVZERO( bv );
 141         ( void )rwm_mapping( map, s, &mapping, remap );
 142         if ( mapping != NULL ) {
 143                 if ( !BER_BVISNULL( &mapping->m_dst ) ) {
 144                         *bv = mapping->m_dst;
 145                 }
 146                 return;
 147         }
 148
 149         if ( !map->drop_missing ) {
 150                 *bv = *s;
 151         }
 152 }
 153
 154 /*
 155  * Map attribute names in place
 156  */
 157 int
 158 rwm_map_attrnames(
 159                 struct ldapmap *at_map,
 160                 struct ldapmap *oc_map,
 161                 AttributeName *an,
 162                 AttributeName **anp,
 163                 int remap
 164 )
 165 {
 166         int             i, j;
 167
 168         assert( anp != NULL );
 169
 170         *anp = NULL;
 171
 172         if ( an == NULL ) {
 173                 return LDAP_SUCCESS;
 174         }
 175
 176         for ( i = 0; !BER_BVISNULL( &an[i].an_name ); i++ )
 177                 /* just count */ ;
 178         *anp = ch_malloc( ( i + 1 )* sizeof( AttributeName ) );
 179         if ( *anp == NULL ) {
 180                 return LDAP_NO_MEMORY;
 181         }
 182
 183         for ( i = 0, j = 0; !BER_BVISNULL( &an[i].an_name ); i++ ) {
 184                 struct ldapmapping      *m;
 185                 int                     at_drop_missing = 0,
 186                                         oc_drop_missing = 0;
 187
 188                 if ( an[i].an_desc ) {
 189                         if ( !at_map ) {
 190                                 /* FIXME: better leave as is? */
 191                                 continue;
 192                         }
 193
 194                         at_drop_missing = rwm_mapping( at_map, &an[i].an_name, &m, remap );
 195                         if ( at_drop_missing || ( m && BER_BVISNULL( &m->m_dst ) ) ) {
 196                                 continue;
 197                         }
 198
 199                         if ( !m ) {
 200                                 (*anp)[j] = an[i];
 201                                 j++;
 202                                 continue;
 203                         }
 204
 205                         (*anp)[j] = an[i];
 206                         if ( remap == RWM_MAP ) {
 207                                 (*anp)[j].an_name = m->m_dst;
 208                                 (*anp)[j].an_desc = m->m_dst_ad;
 209                         } else {
 210                                 (*anp)[j].an_name = m->m_src;
 211                                 (*anp)[j].an_desc = m->m_src_ad;
 212
 213                         }
 214
 215                         j++;
 216                         continue;
 217
 218                 } else if ( an[i].an_oc ) {
 219                         if ( !oc_map ) {
 220                                 /* FIXME: better leave as is? */
 221                                 continue;
 222                         }
 223
 224                         oc_drop_missing = rwm_mapping( oc_map, &an[i].an_name, &m, remap );
 225
 226                         if ( oc_drop_missing || ( m && BER_BVISNULL( &m->m_dst ) ) ) {
 227                                 continue;
 228                         }
 229
 230                         if ( !m ) {
 231                                 (*anp)[j] = an[i];
 232                                 j++;
 233                                 continue;
 234                         }
 235
 236                         (*anp)[j] = an[i];
 237                         if ( remap == RWM_MAP ) {
 238                                 (*anp)[j].an_name = m->m_dst;
 239                                 (*anp)[j].an_oc = m->m_dst_oc;
 240                         } else {
 241                                 (*anp)[j].an_name = m->m_src;
 242                                 (*anp)[j].an_oc = m->m_src_oc;
 243                         }
 244
 245                 } else {
 246                         at_drop_missing = rwm_mapping( at_map, &an[i].an_name, &m, remap );
 247
 248                         if ( at_drop_missing || !m ) {
 249
 250                                 oc_drop_missing = rwm_mapping( oc_map, &an[i].an_name, &m, remap );
 251
 252                                 /* if both at_map and oc_map required to drop missing,
 253                                  * then do it */
 254                                 if ( oc_drop_missing && at_drop_missing ) {
 255                                         continue;
 256                                 }
 257
 258                                 /* if no oc_map mapping was found and at_map required
 259                                  * to drop missing, then do it; otherwise, at_map wins
 260                                  * and an is considered an attr and is left unchanged */
 261                                 if ( !m ) {
 262                                         if ( at_drop_missing ) {
 263                                                 continue;
 264                                         }
 265                                         (*anp)[j] = an[i];
 266                                         j++;
 267                                         continue;
 268                                 }
 269
 270                                 if ( BER_BVISNULL( &m->m_dst ) ) {
 271                                         continue;
 272                                 }
 273
 274                                 (*anp)[j] = an[i];
 275                                 if ( remap == RWM_MAP ) {
 276                                         (*anp)[j].an_name = m->m_dst;
 277                                         (*anp)[j].an_oc = m->m_dst_oc;
 278                                 } else {
 279                                         (*anp)[j].an_name = m->m_src;
 280                                         (*anp)[j].an_oc = m->m_src_oc;
 281                                 }
 282                                 j++;
 283                                 continue;
 284                         }
 285
 286                         if ( !BER_BVISNULL( &m->m_dst ) ) {
 287                                 (*anp)[j] = an[i];
 288                                 if ( remap == RWM_MAP ) {
 289                                         (*anp)[j].an_name = m->m_dst;
 290                                         (*anp)[j].an_desc = m->m_dst_ad;
 291                                 } else {
 292                                         (*anp)[j].an_name = m->m_src;
 293                                         (*anp)[j].an_desc = m->m_src_ad;
 294                                 }
 295                                 j++;
 296                                 continue;
 297                         }
 298                 }
 299         }
 300
 301         if ( j == 0 && i != 0 ) {
 302                 memset( &(*anp)[0], 0, sizeof( AttributeName ) );
 303                 BER_BVSTR( &(*anp)[0].an_name, LDAP_NO_ATTRS );
 304         }
 305         memset( &(*anp)[j], 0, sizeof( AttributeName ) );
 306
 307         return LDAP_SUCCESS;
 308 }
 309
 310 int
 311 rwm_map_attrs(
 312                 struct ldapmap *at_map,
 313                 AttributeName *an,
 314                 int remap,
 315                 char ***mapped_attrs
 316 )
 317 {
 318         int i, j;
 319         char **na;
 320
 321         if ( an == NULL ) {
 322                 *mapped_attrs = NULL;
 323                 return LDAP_SUCCESS;
 324         }
 325
 326         for ( i = 0; !BER_BVISNULL( &an[ i ].an_name ); i++ ) {
 327                 /*  */
 328         }
 329
 330         na = (char **)ch_calloc( i + 1, sizeof( char * ) );
 331         if ( na == NULL ) {
 332                 *mapped_attrs = NULL;
 333                 return LDAP_NO_MEMORY;
 334         }
 335
 336         for ( i = j = 0; !BER_BVISNULL( &an[i].an_name ); i++ ) {
 337                 struct ldapmapping      *mapping;
 338
 339                 if ( rwm_mapping( at_map, &an[i].an_name, &mapping, remap ) ) {
 340                         continue;
 341                 }
 342
 343                 if ( !mapping ) {
 344                         na[ j++ ] = an[ i ].an_name.bv_val;
 345
 346                 } else if ( !BER_BVISNULL( &mapping->m_dst ) ) {
 347                         na[ j++ ] = mapping->m_dst.bv_val;
 348                 }
 349         }
 350
 351         if ( j == 0 && i != 0 ) {
 352                 na[ j++ ] = LDAP_NO_ATTRS;
 353         }
 354
 355         na[ j ] = NULL;
 356
 357         *mapped_attrs = na;
 358
 359         return LDAP_SUCCESS;
 360 }
 361
 362 static int
 363 map_attr_value(
 364                 dncookie                *dc,
 365                 AttributeDescription    **adp,
 366                 struct berval           *mapped_attr,
 367                 struct berval           *value,
 368                 struct berval           *mapped_value,
 369                 int                     remap )
 370 {
 371         struct berval           vtmp = BER_BVNULL;
 372         int                     freeval = 0;
 373         AttributeDescription    *ad = *adp;
 374         struct ldapmapping      *mapping = NULL;
 375
 376         rwm_mapping( &dc->rwmap->rwm_at, &ad->ad_cname, &mapping, remap );
 377         if ( mapping == NULL ) {
 378                 if ( dc->rwmap->rwm_at.drop_missing ) {
 379                         return -1;
 380                 }
 381
 382                 *mapped_attr = ad->ad_cname;
 383
 384         } else {
 385                 *mapped_attr = mapping->m_dst;
 386         }
 387
 388         if ( value != NULL ) {
 389                 assert( mapped_value != NULL );
 390
 391                 if ( ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 392                                 || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 393                 {
 394                         dncookie        fdc = *dc;
 395                         int             rc;
 396
 397 #ifdef ENABLE_REWRITE
 398                         fdc.ctx = "searchFilterAttrDN";
 399 #endif /* ENABLE_REWRITE */
 400
 401                         vtmp = *value;
 402                         rc = rwm_dn_massage_normalize( &fdc, value, &vtmp );
 403                         switch ( rc ) {
 404                         case LDAP_SUCCESS:
 405                                 if ( vtmp.bv_val != value->bv_val ) {
 406                                         freeval = 1;
 407                                 }
 408                                 break;
 409
 410                         case LDAP_UNWILLING_TO_PERFORM:
 411                         case LDAP_OTHER:
 412                         default:
 413                                 return -1;
 414                         }
 415
 416                 } else if ( ad == slap_schema.si_ad_objectClass
 417                                 || ad == slap_schema.si_ad_structuralObjectClass )
 418                 {
 419                         rwm_map( &dc->rwmap->rwm_oc, value, &vtmp, remap );
 420                         if ( BER_BVISNULL( &vtmp ) || BER_BVISEMPTY( &vtmp ) ) {
 421                                 vtmp = *value;
 422                         }
 423
 424                 } else {
 425                         vtmp = *value;
 426                 }
 427
 428                 filter_escape_value( &vtmp, mapped_value );
 429
 430                 if ( freeval ) {
 431                         ch_free( vtmp.bv_val );
 432                 }
 433         }
 434
 435         if ( mapping != NULL ) {
 436                 assert( mapping->m_dst_ad != NULL );
 437                 *adp = mapping->m_dst_ad;
 438         }
 439
 440         return 0;
 441 }
 442
 443 static int
 444 rwm_int_filter_map_rewrite(
 445                 dncookie                *dc,
 446                 Filter                  *f,
 447                 struct berval           *fstr )
 448 {
 449         int             i;
 450         Filter          *p;
 451         struct berval   atmp,
 452                         vtmp,
 453                         tmp;
 454         static struct berval
 455                         /* better than nothing... */
 456                         ber_bvfalse = BER_BVC( "(!(objectClass=*))" ),
 457                         ber_bvtf_false = BER_BVC( "(|)" ),
 458                         /* better than nothing... */
 459                         ber_bvtrue = BER_BVC( "(objectClass=*)" ),
 460                         ber_bvtf_true = BER_BVC( "(&)" ),
 461 #if 0
 462                         /* no longer needed; preserved for completeness */
 463                         ber_bvundefined = BER_BVC( "(?=undefined)" ),
 464 #endif
 465                         ber_bverror = BER_BVC( "(?=error)" ),
 466                         ber_bvunknown = BER_BVC( "(?=unknown)" ),
 467                         ber_bvnone = BER_BVC( "(?=none)" );
 468         ber_len_t       len;
 469
 470         if ( f == NULL ) {
 471                 ber_dupbv( fstr, &ber_bvnone );
 472                 return -1;
 473         }
 474
 475         switch ( f->f_choice ) {
 476         case LDAP_FILTER_EQUALITY:
 477                 if ( map_attr_value( dc, &f->f_av_desc, &atmp,
 478                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 479                 {
 480                         return -1;
 481                 }
 482
 483                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(=)" );
 484                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 485
 486                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=%s)",
 487                         atmp.bv_val, vtmp.bv_val );
 488
 489                 ch_free( vtmp.bv_val );
 490                 break;
 491
 492         case LDAP_FILTER_GE:
 493                 if ( map_attr_value( dc, &f->f_av_desc, &atmp,
 494                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 495                 {
 496                         return -1;
 497                 }
 498
 499                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(>=)" );
 500                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 501
 502                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s>=%s)",
 503                         atmp.bv_val, vtmp.bv_val );
 504
 505                 ch_free( vtmp.bv_val );
 506                 break;
 507
 508         case LDAP_FILTER_LE:
 509                 if ( map_attr_value( dc, &f->f_av_desc, &atmp,
 510                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 511                 {
 512                         return -1;
 513                 }
 514
 515                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(<=)" );
 516                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 517
 518                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s<=%s)",
 519                         atmp.bv_val, vtmp.bv_val );
 520
 521                 ch_free( vtmp.bv_val );
 522                 break;
 523
 524         case LDAP_FILTER_APPROX:
 525                 if ( map_attr_value( dc, &f->f_av_desc, &atmp,
 526                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 527                 {
 528                         return -1;
 529                 }
 530
 531                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(~=)" );
 532                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 533
 534                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s~=%s)",
 535                         atmp.bv_val, vtmp.bv_val );
 536
 537                 ch_free( vtmp.bv_val );
 538                 break;
 539
 540         case LDAP_FILTER_SUBSTRINGS:
 541                 if ( map_attr_value( dc, &f->f_sub_desc, &atmp,
 542                                         NULL, NULL, RWM_MAP ) )
 543                 {
 544                         return -1;
 545                 }
 546
 547                 /* cannot be a DN ... */
 548
 549                 fstr->bv_len = atmp.bv_len + STRLENOF( "(=*)" );
 550                 fstr->bv_val = ch_malloc( fstr->bv_len + 128 );
 551
 552                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
 553                         atmp.bv_val );
 554
 555                 if ( !BER_BVISNULL( &f->f_sub_initial ) ) {
 556                         len = fstr->bv_len;
 557
 558                         filter_escape_value( &f->f_sub_initial, &vtmp );
 559
 560                         fstr->bv_len += vtmp.bv_len;
 561                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 562
 563                         snprintf( &fstr->bv_val[len - 2], vtmp.bv_len + 3,
 564                                 /* "(attr=" */ "%s*)",
 565                                 vtmp.bv_val );
 566
 567                         ch_free( vtmp.bv_val );
 568                 }
 569
 570                 if ( f->f_sub_any != NULL ) {
 571                         for ( i = 0; !BER_BVISNULL( &f->f_sub_any[i] ); i++ ) {
 572                                 len = fstr->bv_len;
 573                                 filter_escape_value( &f->f_sub_any[i], &vtmp );
 574
 575                                 fstr->bv_len += vtmp.bv_len + 1;
 576                                 fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 577
 578                                 snprintf( &fstr->bv_val[len - 1], vtmp.bv_len + 3,
 579                                         /* "(attr=[init]*[any*]" */ "%s*)",
 580                                         vtmp.bv_val );
 581                                 ch_free( vtmp.bv_val );
 582                         }
 583                 }
 584
 585                 if ( !BER_BVISNULL( &f->f_sub_final ) ) {
 586                         len = fstr->bv_len;
 587
 588                         filter_escape_value( &f->f_sub_final, &vtmp );
 589
 590                         fstr->bv_len += vtmp.bv_len;
 591                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 592
 593                         snprintf( &fstr->bv_val[len - 1], vtmp.bv_len + 3,
 594                                 /* "(attr=[init*][any*]" */ "%s)",
 595                                 vtmp.bv_val );
 596
 597                         ch_free( vtmp.bv_val );
 598                 }
 599
 600                 break;
 601
 602         case LDAP_FILTER_PRESENT:
 603                 if ( map_attr_value( dc, &f->f_desc, &atmp,
 604                                         NULL, NULL, RWM_MAP ) )
 605                 {
 606                         return -1;
 607                 }
 608
 609                 fstr->bv_len = atmp.bv_len + STRLENOF( "(=*)" );
 610                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 611
 612                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
 613                         atmp.bv_val );
 614                 break;
 615
 616         case LDAP_FILTER_AND:
 617         case LDAP_FILTER_OR:
 618         case LDAP_FILTER_NOT:
 619                 fstr->bv_len = STRLENOF( "(%)" );
 620                 fstr->bv_val = ch_malloc( fstr->bv_len + 128 );
 621
 622                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%c)",
 623                         f->f_choice == LDAP_FILTER_AND ? '&' :
 624                         f->f_choice == LDAP_FILTER_OR ? '|' : '!' );
 625
 626                 for ( p = f->f_list; p != NULL; p = p->f_next ) {
 627                         len = fstr->bv_len;
 628
 629                         if ( rwm_int_filter_map_rewrite( dc, p, &vtmp ) )
 630                         {
 631                                 return -1;
 632                         }
 633
 634                         fstr->bv_len += vtmp.bv_len;
 635                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 636
 637                         snprintf( &fstr->bv_val[len-1], vtmp.bv_len + 2,
 638                                 /*"("*/ "%s)", vtmp.bv_val );
 639
 640                         ch_free( vtmp.bv_val );
 641                 }
 642
 643                 break;
 644
 645         case LDAP_FILTER_EXT: {
 646                 if ( f->f_mr_desc ) {
 647                         if ( map_attr_value( dc, &f->f_mr_desc, &atmp,
 648                                                 &f->f_mr_value, &vtmp, RWM_MAP ) )
 649                         {
 650                                 return -1;
 651                         }
 652
 653                 } else {
 654                         BER_BVSTR( &atmp, "" );
 655                         filter_escape_value( &f->f_mr_value, &vtmp );
 656                 }
 657
 658
 659                 fstr->bv_len = atmp.bv_len +
 660                         ( f->f_mr_dnattrs ? STRLENOF( ":dn" ) : 0 ) +
 661                         ( f->f_mr_rule_text.bv_len ? f->f_mr_rule_text.bv_len + 1 : 0 ) +
 662                         vtmp.bv_len + STRLENOF( "(:=)" );
 663                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 664
 665                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s%s%s:=%s)",
 666                         atmp.bv_val,
 667                         f->f_mr_dnattrs ? ":dn" : "",
 668                         !BER_BVISEMPTY( &f->f_mr_rule_text ) ? ":" : "",
 669                         !BER_BVISEMPTY( &f->f_mr_rule_text ) ? f->f_mr_rule_text.bv_val : "",
 670                         vtmp.bv_val );
 671                 ch_free( vtmp.bv_val );
 672                 break;
 673         }
 674
 675         case SLAPD_FILTER_COMPUTED:
 676                 switch ( f->f_result ) {
 677                 case LDAP_COMPARE_FALSE:
 678                         if ( dc->rwmap->rwm_flags & RWM_F_SUPPORT_T_F ) {
 679                                 tmp = ber_bvtf_false;
 680                                 break;
 681                         }
 682                         /* fallthru */
 683
 684                 case SLAPD_COMPARE_UNDEFINED:
 685                         tmp = ber_bvfalse;
 686                         break;
 687
 688                 case LDAP_COMPARE_TRUE:
 689                         if ( dc->rwmap->rwm_flags & RWM_F_SUPPORT_T_F ) {
 690                                 tmp = ber_bvtf_true;
 691                         } else {
 692                                 tmp = ber_bvtrue;
 693                         }
 694                         break;
 695
 696                 default:
 697                         tmp = ber_bverror;
 698                         break;
 699                 }
 700
 701                 ber_dupbv( fstr, &tmp );
 702                 break;
 703
 704         default:
 705                 ber_dupbv( fstr, &ber_bvunknown );
 706                 break;
 707         }
 708
 709         return 0;
 710 }
 711
 712 int
 713 rwm_filter_map_rewrite(
 714                 dncookie                *dc,
 715                 Filter                  *f,
 716                 struct berval           *fstr )
 717 {
 718         int             rc;
 719         dncookie        fdc;
 720         struct berval   ftmp;
 721
 722         rc = rwm_int_filter_map_rewrite( dc, f, fstr );
 723
 724 #ifdef ENABLE_REWRITE
 725         if ( rc != LDAP_SUCCESS ) {
 726                 return rc;
 727         }
 728
 729         fdc = *dc;
 730         ftmp = *fstr;
 731
 732         fdc.ctx = "searchFilter";
 733
 734         switch ( rewrite_session( fdc.rwmap->rwm_rw, fdc.ctx,
 735                                 ( !BER_BVISEMPTY( &ftmp ) ? ftmp.bv_val : "" ),
 736                                 fdc.conn, &fstr->bv_val ) )
 737         {
 738         case REWRITE_REGEXEC_OK:
 739                 if ( !BER_BVISNULL( fstr ) ) {
 740                         fstr->bv_len = strlen( fstr->bv_val );
 741                         ch_free( ftmp.bv_val );
 742
 743                 } else {
 744                         *fstr = ftmp;
 745                 }
 746
 747                 Debug( LDAP_DEBUG_ARGS,
 748                         "[rw] %s: \"%s\" -> \"%s\"\n",
 749                         fdc.ctx, ftmp.bv_val, fstr->bv_val );
 750                 rc = LDAP_SUCCESS;
 751                 break;
 752
 753         case REWRITE_REGEXEC_UNWILLING:
 754                 if ( fdc.rs ) {
 755                         fdc.rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 756                         fdc.rs->sr_text = "Operation not allowed";
 757                 }
 758                 rc = LDAP_UNWILLING_TO_PERFORM;
 759                 break;
 760
 761         case REWRITE_REGEXEC_ERR:
 762                 if ( fdc.rs ) {
 763                         fdc.rs->sr_err = LDAP_OTHER;
 764                         fdc.rs->sr_text = "Rewrite error";
 765                 }
 766                 rc = LDAP_OTHER;
 767                 break;
 768         }
 769
 770 #endif /* ENABLE_REWRITE */
 771         return rc;
 772 }
 773
 774 /*
 775  * I don't like this much, but we need two different
 776  * functions because different heap managers may be
 777  * in use in back-ldap/meta to reduce the amount of
 778  * calls to malloc routines, and some of the free()
 779  * routines may be macros with args
 780  */
 781 int
 782 rwm_referral_rewrite(
 783         Operation               *op,
 784         SlapReply               *rs,
 785         void                    *cookie,
 786         BerVarray               a_vals,
 787         BerVarray               *pa_nvals )
 788 {
 789         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 790         struct ldaprwmap        *rwmap =
 791                         (struct ldaprwmap *)on->on_bi.bi_private;
 792
 793         int                     i, last;
 794
 795         dncookie                dc;
 796         struct berval           dn = BER_BVNULL,
 797                                 ndn = BER_BVNULL;
 798
 799         assert( a_vals != NULL );
 800
 801         /*
 802          * Rewrite the dn if needed
 803          */
 804         dc.rwmap = rwmap;
 805 #ifdef ENABLE_REWRITE
 806         dc.conn = op->o_conn;
 807         dc.rs = rs;
 808         dc.ctx = (char *)cookie;
 809 #else /* ! ENABLE_REWRITE */
 810         dc.tofrom = ((int *)cookie)[0];
 811         dc.normalized = 0;
 812 #endif /* ! ENABLE_REWRITE */
 813
 814         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ )
 815                 ;
 816         last--;
 817
 818         if ( pa_nvals != NULL ) {
 819                 if ( *pa_nvals == NULL ) {
 820                         *pa_nvals = ch_malloc( ( last + 2 ) * sizeof(struct berval) );
 821                         memset( *pa_nvals, 0, ( last + 2 ) * sizeof(struct berval) );
 822                 }
 823         }
 824
 825         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
 826                 struct berval   olddn = BER_BVNULL,
 827                                 oldval;
 828                 int             rc;
 829                 LDAPURLDesc     *ludp;
 830
 831                 oldval = a_vals[i];
 832                 rc = ldap_url_parse( oldval.bv_val, &ludp );
 833                 if ( rc != LDAP_URL_SUCCESS ) {
 834                         /* leave attr untouched if massage failed */
 835                         if ( pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
 836                                 ber_dupbv( &(*pa_nvals)[i], &oldval );
 837                         }
 838                         continue;
 839                 }
 840
 841                 /* FIXME: URLs like "ldap:///dc=suffix" if passed
 842                  * thru ldap_url_parse() and ldap_url_desc2str()
 843                  * get rewritten as "ldap:///dc=suffix??base";
 844                  * we don't want this to occur... */
 845                 if ( ludp->lud_scope == LDAP_SCOPE_BASE ) {
 846                         ludp->lud_scope = LDAP_SCOPE_DEFAULT;
 847                 }
 848
 849                 ber_str2bv( ludp->lud_dn, 0, 0, &olddn );
 850
 851                 dn = olddn;
 852                 if ( pa_nvals ) {
 853                         ndn = olddn;
 854                         rc = rwm_dn_massage_pretty_normalize( &dc, &olddn,
 855                                         &dn, &ndn );
 856                 } else {
 857                         rc = rwm_dn_massage_pretty( &dc, &olddn, &dn );
 858                 }
 859
 860                 switch ( rc ) {
 861                 case LDAP_UNWILLING_TO_PERFORM:
 862                         /*
 863                          * FIXME: need to check if it may be considered
 864                          * legal to trim values when adding/modifying;
 865                          * it should be when searching (e.g. ACLs).
 866                          */
 867                         ch_free( a_vals[i].bv_val );
 868                         if (last > i ) {
 869                                 a_vals[i] = a_vals[last];
 870                                 if ( pa_nvals ) {
 871                                         (*pa_nvals)[i] = (*pa_nvals)[last];
 872                                 }
 873                         }
 874                         BER_BVZERO( &a_vals[last] );
 875                         if ( pa_nvals ) {
 876                                 BER_BVZERO( &(*pa_nvals)[last] );
 877                         }
 878                         last--;
 879                         break;
 880
 881                 case LDAP_SUCCESS:
 882                         if ( !BER_BVISNULL( &dn ) && dn.bv_val != olddn.bv_val ) {
 883                                 char    *newurl;
 884
 885                                 ludp->lud_dn = dn.bv_val;
 886                                 newurl = ldap_url_desc2str( ludp );
 887                                 ludp->lud_dn = olddn.bv_val;
 888                                 ch_free( dn.bv_val );
 889                                 if ( newurl == NULL ) {
 890                                         /* FIXME: leave attr untouched
 891                                          * even if ldap_url_desc2str failed...
 892                                          */
 893                                         break;
 894                                 }
 895
 896                                 ber_str2bv( newurl, 0, 1, &a_vals[i] );
 897                                 LDAP_FREE( newurl );
 898
 899                                 if ( pa_nvals ) {
 900                                         ludp->lud_dn = ndn.bv_val;
 901                                         newurl = ldap_url_desc2str( ludp );
 902                                         ludp->lud_dn = olddn.bv_val;
 903                                         ch_free( ndn.bv_val );
 904                                         if ( newurl == NULL ) {
 905                                                 /* FIXME: leave attr untouched
 906                                                  * even if ldap_url_desc2str failed...
 907                                                  */
 908                                                 ch_free( a_vals[i].bv_val );
 909                                                 a_vals[i] = oldval;
 910                                                 break;
 911                                         }
 912
 913                                         if ( !BER_BVISNULL( &(*pa_nvals)[i] ) ) {
 914                                                 ch_free( (*pa_nvals)[i].bv_val );
 915                                         }
 916                                         ber_str2bv( newurl, 0, 1, &(*pa_nvals)[i] );
 917                                         LDAP_FREE( newurl );
 918                                 }
 919
 920                                 ch_free( oldval.bv_val );
 921                                 ludp->lud_dn = olddn.bv_val;
 922                         }
 923                         break;
 924
 925                 default:
 926                         /* leave attr untouched if massage failed */
 927                         if ( pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
 928                                 ber_dupbv( &(*pa_nvals)[i], &a_vals[i] );
 929                         }
 930                         break;
 931                 }
 932                 ldap_free_urldesc( ludp );
 933         }
 934
 935         return 0;
 936 }
 937
 938 /*
 939  * I don't like this much, but we need two different
 940  * functions because different heap managers may be
 941  * in use in back-ldap/meta to reduce the amount of
 942  * calls to malloc routines, and some of the free()
 943  * routines may be macros with args
 944  */
 945 int
 946 rwm_dnattr_rewrite(
 947         Operation               *op,
 948         SlapReply               *rs,
 949         void                    *cookie,
 950         BerVarray               a_vals,
 951         BerVarray               *pa_nvals )
 952 {
 953         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 954         struct ldaprwmap        *rwmap =
 955                         (struct ldaprwmap *)on->on_bi.bi_private;
 956
 957         int                     i, last;
 958
 959         dncookie                dc;
 960         struct berval           dn = BER_BVNULL,
 961                                 ndn = BER_BVNULL;
 962         BerVarray               in;
 963
 964         if ( a_vals ) {
 965                 in = a_vals;
 966
 967         } else {
 968                 if ( pa_nvals == NULL || *pa_nvals == NULL ) {
 969                         return LDAP_OTHER;
 970                 }
 971                 in = *pa_nvals;
 972         }
 973
 974         /*
 975          * Rewrite the dn if needed
 976          */
 977         dc.rwmap = rwmap;
 978 #ifdef ENABLE_REWRITE
 979         dc.conn = op->o_conn;
 980         dc.rs = rs;
 981         dc.ctx = (char *)cookie;
 982 #else /* ! ENABLE_REWRITE */
 983         dc.tofrom = ((int *)cookie)[0];
 984         dc.normalized = 0;
 985 #endif /* ! ENABLE_REWRITE */
 986
 987         for ( last = 0; !BER_BVISNULL( &in[last] ); last++ );
 988         last--;
 989         if ( pa_nvals != NULL ) {
 990                 if ( *pa_nvals == NULL ) {
 991                         *pa_nvals = ch_malloc( ( last + 2 ) * sizeof(struct berval) );
 992                         memset( *pa_nvals, 0, ( last + 2 ) * sizeof(struct berval) );
 993                 }
 994         }
 995
 996         for ( i = 0; !BER_BVISNULL( &in[i] ); i++ ) {
 997                 int             rc;
 998
 999                 if ( a_vals ) {
1000                         dn = in[i];
1001                         if ( pa_nvals ) {
1002                                 ndn = (*pa_nvals)[i];
1003                                 rc = rwm_dn_massage_pretty_normalize( &dc, &in[i], &dn, &ndn );
1004                         } else {
1005                                 rc = rwm_dn_massage_pretty( &dc, &in[i], &dn );
1006                         }
1007                 } else {
1008                         ndn = in[i];
1009                         rc = rwm_dn_massage_normalize( &dc, &in[i], &ndn );
1010                 }
1011
1012                 switch ( rc ) {
1013                 case LDAP_UNWILLING_TO_PERFORM:
1014                         /*
1015                          * FIXME: need to check if it may be considered
1016                          * legal to trim values when adding/modifying;
1017                          * it should be when searching (e.g. ACLs).
1018                          */
1019                         ch_free( in[i].bv_val );
1020                         if (last > i ) {
1021                                 in[i] = in[last];
1022                                 if ( a_vals && pa_nvals ) {
1023                                         (*pa_nvals)[i] = (*pa_nvals)[last];
1024                                 }
1025                         }
1026                         BER_BVZERO( &in[last] );
1027                         if ( a_vals && pa_nvals ) {
1028                                 BER_BVZERO( &(*pa_nvals)[last] );
1029                         }
1030                         last--;
1031                         break;
1032
1033                 case LDAP_SUCCESS:
1034                         if ( a_vals ) {
1035                                 if ( !BER_BVISNULL( &dn ) && dn.bv_val != a_vals[i].bv_val ) {
1036                                         ch_free( a_vals[i].bv_val );
1037                                         a_vals[i] = dn;
1038
1039                                         if ( pa_nvals ) {
1040                                                 if ( !BER_BVISNULL( &(*pa_nvals)[i] ) ) {
1041                                                         ch_free( (*pa_nvals)[i].bv_val );
1042                                                 }
1043                                                 (*pa_nvals)[i] = ndn;
1044                                         }
1045                                 }
1046
1047                         } else {
1048                                 if ( !BER_BVISNULL( &ndn ) && ndn.bv_val != (*pa_nvals)[i].bv_val ) {
1049                                         ch_free( (*pa_nvals)[i].bv_val );
1050                                         (*pa_nvals)[i] = ndn;
1051                                 }
1052                         }
1053                         break;
1054
1055                 default:
1056                         /* leave attr untouched if massage failed */
1057                         if ( a_vals && pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
1058                                 dnNormalize( 0, NULL, NULL, &a_vals[i], &(*pa_nvals)[i], NULL );
1059                         }
1060                         break;
1061                 }
1062         }
1063
1064         return 0;
1065 }
1066
1067 int
1068 rwm_referral_result_rewrite(
1069         dncookie                *dc,
1070         BerVarray               a_vals
1071 )
1072 {
1073         int             i, last;
1074
1075         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ );
1076         last--;
1077
1078         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
1079                 struct berval   dn,
1080                                 olddn = BER_BVNULL;
1081                 int             rc;
1082                 LDAPURLDesc     *ludp;
1083
1084                 rc = ldap_url_parse( a_vals[i].bv_val, &ludp );
1085                 if ( rc != LDAP_URL_SUCCESS ) {
1086                         /* leave attr untouched if massage failed */
1087                         continue;
1088                 }
1089
1090                 /* FIXME: URLs like "ldap:///dc=suffix" if passed
1091                  * thru ldap_url_parse() and ldap_url_desc2str()
1092                  * get rewritten as "ldap:///dc=suffix??base";
1093                  * we don't want this to occur... */
1094                 if ( ludp->lud_scope == LDAP_SCOPE_BASE ) {
1095                         ludp->lud_scope = LDAP_SCOPE_DEFAULT;
1096                 }
1097
1098                 ber_str2bv( ludp->lud_dn, 0, 0, &olddn );
1099
1100                 dn = olddn;
1101                 rc = rwm_dn_massage_pretty( dc, &olddn, &dn );
1102                 switch ( rc ) {
1103                 case LDAP_UNWILLING_TO_PERFORM:
1104                         /*
1105                          * FIXME: need to check if it may be considered
1106                          * legal to trim values when adding/modifying;
1107                          * it should be when searching (e.g. ACLs).
1108                          */
1109                         ch_free( a_vals[i].bv_val );
1110                         if ( last > i ) {
1111                                 a_vals[i] = a_vals[last];
1112                         }
1113                         BER_BVZERO( &a_vals[last] );
1114                         last--;
1115                         i--;
1116                         break;
1117
1118                 default:
1119                         /* leave attr untouched if massage failed */
1120                         if ( !BER_BVISNULL( &dn ) && olddn.bv_val != dn.bv_val ) {
1121                                 char    *newurl;
1122
1123                                 ludp->lud_dn = dn.bv_val;
1124                                 newurl = ldap_url_desc2str( ludp );
1125                                 if ( newurl == NULL ) {
1126                                         /* FIXME: leave attr untouched
1127                                          * even if ldap_url_desc2str failed...
1128                                          */
1129                                         break;
1130                                 }
1131
1132                                 ch_free( a_vals[i].bv_val );
1133                                 ber_str2bv( newurl, 0, 1, &a_vals[i] );
1134                                 LDAP_FREE( newurl );
1135                                 ludp->lud_dn = olddn.bv_val;
1136                         }
1137                         break;
1138                 }
1139
1140                 ldap_free_urldesc( ludp );
1141         }
1142
1143         return 0;
1144 }
1145
1146 int
1147 rwm_dnattr_result_rewrite(
1148         dncookie                *dc,
1149         BerVarray               a_vals
1150 )
1151 {
1152         int             i, last;
1153
1154         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ );
1155         last--;
1156
1157         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
1158                 struct berval   dn;
1159                 int             rc;
1160
1161                 dn = a_vals[i];
1162                 rc = rwm_dn_massage_pretty( dc, &a_vals[i], &dn );
1163                 switch ( rc ) {
1164                 case LDAP_UNWILLING_TO_PERFORM:
1165                         /*
1166                          * FIXME: need to check if it may be considered
1167                          * legal to trim values when adding/modifying;
1168                          * it should be when searching (e.g. ACLs).
1169                          */
1170                         ch_free( a_vals[i].bv_val );
1171                         if ( last > i ) {
1172                                 a_vals[i] = a_vals[last];
1173                         }
1174                         BER_BVZERO( &a_vals[last] );
1175                         last--;
1176                         break;
1177
1178                 default:
1179                         /* leave attr untouched if massage failed */
1180                         if ( !BER_BVISNULL( &dn ) && a_vals[i].bv_val != dn.bv_val ) {
1181                                 ch_free( a_vals[i].bv_val );
1182                                 a_vals[i] = dn;
1183                         }
1184                         break;
1185                 }
1186         }
1187
1188         return 0;
1189 }
1190
1191 void
1192 rwm_mapping_free( void *v_mapping )
1193 {
1194         struct ldapmapping *mapping = v_mapping;
1195
1196         if ( !BER_BVISNULL( &mapping[0].m_src ) ) {
1197                 ch_free( mapping[0].m_src.bv_val );
1198         }
1199
1200         if ( mapping[0].m_flags & RWMMAP_F_FREE_SRC ) {
1201                 if ( mapping[0].m_flags & RWMMAP_F_IS_OC ) {
1202                         if ( mapping[0].m_src_oc ) {
1203                                 ch_free( mapping[0].m_src_oc );
1204                         }
1205
1206                 } else {
1207                         if ( mapping[0].m_src_ad ) {
1208                                 ch_free( mapping[0].m_src_ad );
1209                         }
1210                 }
1211         }
1212
1213         if ( !BER_BVISNULL( &mapping[0].m_dst ) ) {
1214                 ch_free( mapping[0].m_dst.bv_val );
1215         }
1216
1217         if ( mapping[0].m_flags & RWMMAP_F_FREE_DST ) {
1218                 if ( mapping[0].m_flags & RWMMAP_F_IS_OC ) {
1219                         if ( mapping[0].m_dst_oc ) {
1220                                 ch_free( mapping[0].m_dst_oc );
1221                         }
1222
1223                 } else {
1224                         if ( mapping[0].m_dst_ad ) {
1225                                 ch_free( mapping[0].m_dst_ad );
1226                         }
1227                 }
1228         }
1229
1230         ch_free( mapping );
1231
1232 }
1233
1234 #endif /* SLAPD_OVER_RWM */