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         AttributeDescription *ad;
 455         struct berval   atmp,
 456                         vtmp,
 457                         *tmp;
 458         static struct berval
 459                         /* better than nothing... */
 460                         ber_bvfalse = BER_BVC( "(!(objectClass=*))" ),
 461                         ber_bvtf_false = BER_BVC( "(|)" ),
 462                         /* better than nothing... */
 463                         ber_bvtrue = BER_BVC( "(objectClass=*)" ),
 464                         ber_bvtf_true = BER_BVC( "(&)" ),
 465 #if 0
 466                         /* no longer needed; preserved for completeness */
 467                         ber_bvundefined = BER_BVC( "(?=undefined)" ),
 468 #endif
 469                         ber_bverror = BER_BVC( "(?=error)" ),
 470                         ber_bvunknown = BER_BVC( "(?=unknown)" ),
 471                         ber_bvnone = BER_BVC( "(?=none)" );
 472         ber_len_t       len;
 473
 474         assert( fstr != NULL );
 475         BER_BVZERO( fstr );
 476
 477         if ( f == NULL ) {
 478                 ber_dupbv( fstr, &ber_bvnone );
 479                 return LDAP_OTHER;
 480         }
 481
 482         switch ( f->f_choice & SLAPD_FILTER_MASK ) {
 483         case LDAP_FILTER_EQUALITY:
 484                 ad = f->f_av_desc;
 485                 if ( map_attr_value( dc, &ad, &atmp,
 486                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 487                 {
 488                         goto computed;
 489                 }
 490
 491                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(=)" );
 492                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 493
 494                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=%s)",
 495                         atmp.bv_val, vtmp.bv_val );
 496
 497                 ch_free( vtmp.bv_val );
 498                 break;
 499
 500         case LDAP_FILTER_GE:
 501                 ad = f->f_av_desc;
 502                 if ( map_attr_value( dc, &ad, &atmp,
 503                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 504                 {
 505                         goto computed;
 506                 }
 507
 508                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(>=)" );
 509                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 510
 511                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s>=%s)",
 512                         atmp.bv_val, vtmp.bv_val );
 513
 514                 ch_free( vtmp.bv_val );
 515                 break;
 516
 517         case LDAP_FILTER_LE:
 518                 ad = f->f_av_desc;
 519                 if ( map_attr_value( dc, &ad, &atmp,
 520                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 521                 {
 522                         goto computed;
 523                 }
 524
 525                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(<=)" );
 526                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 527
 528                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s<=%s)",
 529                         atmp.bv_val, vtmp.bv_val );
 530
 531                 ch_free( vtmp.bv_val );
 532                 break;
 533
 534         case LDAP_FILTER_APPROX:
 535                 ad = f->f_av_desc;
 536                 if ( map_attr_value( dc, &ad, &atmp,
 537                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 538                 {
 539                         goto computed;
 540                 }
 541
 542                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(~=)" );
 543                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 544
 545                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s~=%s)",
 546                         atmp.bv_val, vtmp.bv_val );
 547
 548                 ch_free( vtmp.bv_val );
 549                 break;
 550
 551         case LDAP_FILTER_SUBSTRINGS:
 552                 ad = f->f_sub_desc;
 553                 if ( map_attr_value( dc, &ad, &atmp,
 554                                         NULL, NULL, RWM_MAP ) )
 555                 {
 556                         goto computed;
 557                 }
 558
 559                 /* cannot be a DN ... */
 560
 561                 fstr->bv_len = atmp.bv_len + STRLENOF( "(=*)" );
 562                 fstr->bv_val = ch_malloc( fstr->bv_len + 128 );
 563
 564                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
 565                         atmp.bv_val );
 566
 567                 if ( !BER_BVISNULL( &f->f_sub_initial ) ) {
 568                         len = fstr->bv_len;
 569
 570                         filter_escape_value( &f->f_sub_initial, &vtmp );
 571
 572                         fstr->bv_len += vtmp.bv_len;
 573                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 574
 575                         snprintf( &fstr->bv_val[len - 2], vtmp.bv_len + 3,
 576                                 /* "(attr=" */ "%s*)",
 577                                 vtmp.bv_val );
 578
 579                         ch_free( vtmp.bv_val );
 580                 }
 581
 582                 if ( f->f_sub_any != NULL ) {
 583                         for ( i = 0; !BER_BVISNULL( &f->f_sub_any[i] ); i++ ) {
 584                                 len = fstr->bv_len;
 585                                 filter_escape_value( &f->f_sub_any[i], &vtmp );
 586
 587                                 fstr->bv_len += vtmp.bv_len + 1;
 588                                 fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 589
 590                                 snprintf( &fstr->bv_val[len - 1], vtmp.bv_len + 3,
 591                                         /* "(attr=[init]*[any*]" */ "%s*)",
 592                                         vtmp.bv_val );
 593                                 ch_free( vtmp.bv_val );
 594                         }
 595                 }
 596
 597                 if ( !BER_BVISNULL( &f->f_sub_final ) ) {
 598                         len = fstr->bv_len;
 599
 600                         filter_escape_value( &f->f_sub_final, &vtmp );
 601
 602                         fstr->bv_len += vtmp.bv_len;
 603                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 604
 605                         snprintf( &fstr->bv_val[len - 1], vtmp.bv_len + 3,
 606                                 /* "(attr=[init*][any*]" */ "%s)",
 607                                 vtmp.bv_val );
 608
 609                         ch_free( vtmp.bv_val );
 610                 }
 611
 612                 break;
 613
 614         case LDAP_FILTER_PRESENT:
 615                 ad = f->f_desc;
 616                 if ( map_attr_value( dc, &ad, &atmp,
 617                                         NULL, NULL, RWM_MAP ) )
 618                 {
 619                         goto computed;
 620                 }
 621
 622                 fstr->bv_len = atmp.bv_len + STRLENOF( "(=*)" );
 623                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 624
 625                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
 626                         atmp.bv_val );
 627                 break;
 628
 629         case LDAP_FILTER_AND:
 630         case LDAP_FILTER_OR:
 631         case LDAP_FILTER_NOT:
 632                 fstr->bv_len = STRLENOF( "(%)" );
 633                 fstr->bv_val = ch_malloc( fstr->bv_len + 128 );
 634
 635                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%c)",
 636                         f->f_choice == LDAP_FILTER_AND ? '&' :
 637                         f->f_choice == LDAP_FILTER_OR ? '|' : '!' );
 638
 639                 for ( p = f->f_list; p != NULL; p = p->f_next ) {
 640                         int     rc;
 641
 642                         len = fstr->bv_len;
 643
 644                         rc = rwm_int_filter_map_rewrite( op, dc, p, &vtmp );
 645                         if ( rc != LDAP_SUCCESS ) {
 646                                 return rc;
 647                         }
 648
 649                         fstr->bv_len += vtmp.bv_len;
 650                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 651
 652                         snprintf( &fstr->bv_val[len-1], vtmp.bv_len + 2,
 653                                 /*"("*/ "%s)", vtmp.bv_val );
 654
 655                         ch_free( vtmp.bv_val );
 656                 }
 657
 658                 break;
 659
 660         case LDAP_FILTER_EXT: {
 661                 if ( f->f_mr_desc ) {
 662                         ad = f->f_mr_desc;
 663                         if ( map_attr_value( dc, &ad, &atmp,
 664                                                 &f->f_mr_value, &vtmp, RWM_MAP ) )
 665                         {
 666                                 goto computed;
 667                         }
 668
 669                 } else {
 670                         BER_BVSTR( &atmp, "" );
 671                         filter_escape_value( &f->f_mr_value, &vtmp );
 672                 }
 673
 674
 675                 fstr->bv_len = atmp.bv_len +
 676                         ( f->f_mr_dnattrs ? STRLENOF( ":dn" ) : 0 ) +
 677                         ( f->f_mr_rule_text.bv_len ? f->f_mr_rule_text.bv_len + 1 : 0 ) +
 678                         vtmp.bv_len + STRLENOF( "(:=)" );
 679                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 680
 681                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s%s%s:=%s)",
 682                         atmp.bv_val,
 683                         f->f_mr_dnattrs ? ":dn" : "",
 684                         !BER_BVISEMPTY( &f->f_mr_rule_text ) ? ":" : "",
 685                         !BER_BVISEMPTY( &f->f_mr_rule_text ) ? f->f_mr_rule_text.bv_val : "",
 686                         vtmp.bv_val );
 687                 ch_free( vtmp.bv_val );
 688                 break;
 689         }
 690
 691         case -1:
 692 computed:;
 693                 filter_free_x( op, f );
 694                 f->f_choice = SLAPD_FILTER_COMPUTED;
 695                 f->f_result = SLAPD_COMPARE_UNDEFINED;
 696                 /* fallthru */
 697
 698         case SLAPD_FILTER_COMPUTED:
 699                 switch ( f->f_result ) {
 700                 case LDAP_COMPARE_FALSE:
 701                 /* FIXME: treat UNDEFINED as FALSE */
 702                 case SLAPD_COMPARE_UNDEFINED:
 703                         if ( dc->rwmap->rwm_flags & RWM_F_SUPPORT_T_F ) {
 704                                 tmp = &ber_bvtf_false;
 705                                 break;
 706                         }
 707                         tmp = &ber_bvfalse;
 708                         break;
 709
 710                 case LDAP_COMPARE_TRUE:
 711                         if ( dc->rwmap->rwm_flags & RWM_F_SUPPORT_T_F ) {
 712                                 tmp = &ber_bvtf_true;
 713                                 break;
 714                         }
 715                         tmp = &ber_bvtrue;
 716                         break;
 717
 718                 default:
 719                         tmp = &ber_bverror;
 720                         break;
 721                 }
 722
 723                 ber_dupbv( fstr, tmp );
 724                 break;
 725
 726         default:
 727                 ber_dupbv( fstr, &ber_bvunknown );
 728                 break;
 729         }
 730
 731         return LDAP_SUCCESS;
 732 }
 733
 734 int
 735 rwm_filter_map_rewrite(
 736         Operation               *op,
 737         dncookie                *dc,
 738         Filter                  *f,
 739         struct berval           *fstr )
 740 {
 741         int             rc;
 742         dncookie        fdc;
 743         struct berval   ftmp;
 744
 745         rc = rwm_int_filter_map_rewrite( op, dc, f, fstr );
 746
 747 #ifdef ENABLE_REWRITE
 748         if ( rc != 0 ) {
 749                 return rc;
 750         }
 751
 752         fdc = *dc;
 753         ftmp = *fstr;
 754
 755         fdc.ctx = "searchFilter";
 756
 757         switch ( rewrite_session( fdc.rwmap->rwm_rw, fdc.ctx,
 758                                 ( !BER_BVISEMPTY( &ftmp ) ? ftmp.bv_val : "" ),
 759                                 fdc.conn, &fstr->bv_val ) )
 760         {
 761         case REWRITE_REGEXEC_OK:
 762                 if ( !BER_BVISNULL( fstr ) ) {
 763                         fstr->bv_len = strlen( fstr->bv_val );
 764                         ch_free( ftmp.bv_val );
 765
 766                 } else {
 767                         *fstr = ftmp;
 768                 }
 769
 770                 Debug( LDAP_DEBUG_ARGS,
 771                         "[rw] %s: \"%s\" -> \"%s\"\n",
 772                         fdc.ctx, ftmp.bv_val, fstr->bv_val );
 773                 rc = LDAP_SUCCESS;
 774                 break;
 775
 776         case REWRITE_REGEXEC_UNWILLING:
 777                 if ( fdc.rs ) {
 778                         fdc.rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 779                         fdc.rs->sr_text = "Operation not allowed";
 780                 }
 781                 rc = LDAP_UNWILLING_TO_PERFORM;
 782                 break;
 783
 784         case REWRITE_REGEXEC_ERR:
 785                 if ( fdc.rs ) {
 786                         fdc.rs->sr_err = LDAP_OTHER;
 787                         fdc.rs->sr_text = "Rewrite error";
 788                 }
 789                 rc = LDAP_OTHER;
 790                 break;
 791         }
 792 #endif /* ENABLE_REWRITE */
 793
 794         return rc;
 795 }
 796
 797 /*
 798  * I don't like this much, but we need two different
 799  * functions because different heap managers may be
 800  * in use in back-ldap/meta to reduce the amount of
 801  * calls to malloc routines, and some of the free()
 802  * routines may be macros with args
 803  */
 804 int
 805 rwm_referral_rewrite(
 806         Operation               *op,
 807         SlapReply               *rs,
 808         void                    *cookie,
 809         BerVarray               a_vals,
 810         BerVarray               *pa_nvals )
 811 {
 812         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 813         struct ldaprwmap        *rwmap =
 814                         (struct ldaprwmap *)on->on_bi.bi_private;
 815
 816         int                     i, last;
 817
 818         dncookie                dc;
 819         struct berval           dn = BER_BVNULL,
 820                                 ndn = BER_BVNULL;
 821
 822         assert( a_vals != NULL );
 823
 824         /*
 825          * Rewrite the dn if needed
 826          */
 827         dc.rwmap = rwmap;
 828 #ifdef ENABLE_REWRITE
 829         dc.conn = op->o_conn;
 830         dc.rs = rs;
 831         dc.ctx = (char *)cookie;
 832 #else /* ! ENABLE_REWRITE */
 833         dc.tofrom = ((int *)cookie)[0];
 834         dc.normalized = 0;
 835 #endif /* ! ENABLE_REWRITE */
 836
 837         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ )
 838                 ;
 839         last--;
 840
 841         if ( pa_nvals != NULL ) {
 842                 if ( *pa_nvals == NULL ) {
 843                         *pa_nvals = ch_malloc( ( last + 2 ) * sizeof(struct berval) );
 844                         memset( *pa_nvals, 0, ( last + 2 ) * sizeof(struct berval) );
 845                 }
 846         }
 847
 848         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
 849                 struct berval   olddn = BER_BVNULL,
 850                                 oldval;
 851                 int             rc;
 852                 LDAPURLDesc     *ludp;
 853
 854                 oldval = a_vals[i];
 855                 rc = ldap_url_parse( oldval.bv_val, &ludp );
 856                 if ( rc != LDAP_URL_SUCCESS ) {
 857                         /* leave attr untouched if massage failed */
 858                         if ( pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
 859                                 ber_dupbv( &(*pa_nvals)[i], &oldval );
 860                         }
 861                         continue;
 862                 }
 863
 864                 /* FIXME: URLs like "ldap:///dc=suffix" if passed
 865                  * thru ldap_url_parse() and ldap_url_desc2str()
 866                  * get rewritten as "ldap:///dc=suffix??base";
 867                  * we don't want this to occur... */
 868                 if ( ludp->lud_scope == LDAP_SCOPE_BASE ) {
 869                         ludp->lud_scope = LDAP_SCOPE_DEFAULT;
 870                 }
 871
 872                 ber_str2bv( ludp->lud_dn, 0, 0, &olddn );
 873
 874                 dn = olddn;
 875                 if ( pa_nvals ) {
 876                         ndn = olddn;
 877                         rc = rwm_dn_massage_pretty_normalize( &dc, &olddn,
 878                                         &dn, &ndn );
 879                 } else {
 880                         rc = rwm_dn_massage_pretty( &dc, &olddn, &dn );
 881                 }
 882
 883                 switch ( rc ) {
 884                 case LDAP_UNWILLING_TO_PERFORM:
 885                         /*
 886                          * FIXME: need to check if it may be considered
 887                          * legal to trim values when adding/modifying;
 888                          * it should be when searching (e.g. ACLs).
 889                          */
 890                         ch_free( a_vals[i].bv_val );
 891                         if (last > i ) {
 892                                 a_vals[i] = a_vals[last];
 893                                 if ( pa_nvals ) {
 894                                         (*pa_nvals)[i] = (*pa_nvals)[last];
 895                                 }
 896                         }
 897                         BER_BVZERO( &a_vals[last] );
 898                         if ( pa_nvals ) {
 899                                 BER_BVZERO( &(*pa_nvals)[last] );
 900                         }
 901                         last--;
 902                         break;
 903
 904                 case LDAP_SUCCESS:
 905                         if ( !BER_BVISNULL( &dn ) && dn.bv_val != olddn.bv_val ) {
 906                                 char    *newurl;
 907
 908                                 ludp->lud_dn = dn.bv_val;
 909                                 newurl = ldap_url_desc2str( ludp );
 910                                 ludp->lud_dn = olddn.bv_val;
 911                                 ch_free( dn.bv_val );
 912                                 if ( newurl == NULL ) {
 913                                         /* FIXME: leave attr untouched
 914                                          * even if ldap_url_desc2str failed...
 915                                          */
 916                                         break;
 917                                 }
 918
 919                                 ber_str2bv( newurl, 0, 1, &a_vals[i] );
 920                                 LDAP_FREE( newurl );
 921
 922                                 if ( pa_nvals ) {
 923                                         ludp->lud_dn = ndn.bv_val;
 924                                         newurl = ldap_url_desc2str( ludp );
 925                                         ludp->lud_dn = olddn.bv_val;
 926                                         ch_free( ndn.bv_val );
 927                                         if ( newurl == NULL ) {
 928                                                 /* FIXME: leave attr untouched
 929                                                  * even if ldap_url_desc2str failed...
 930                                                  */
 931                                                 ch_free( a_vals[i].bv_val );
 932                                                 a_vals[i] = oldval;
 933                                                 break;
 934                                         }
 935
 936                                         if ( !BER_BVISNULL( &(*pa_nvals)[i] ) ) {
 937                                                 ch_free( (*pa_nvals)[i].bv_val );
 938                                         }
 939                                         ber_str2bv( newurl, 0, 1, &(*pa_nvals)[i] );
 940                                         LDAP_FREE( newurl );
 941                                 }
 942
 943                                 ch_free( oldval.bv_val );
 944                                 ludp->lud_dn = olddn.bv_val;
 945                         }
 946                         break;
 947
 948                 default:
 949                         /* leave attr untouched if massage failed */
 950                         if ( pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
 951                                 ber_dupbv( &(*pa_nvals)[i], &a_vals[i] );
 952                         }
 953                         break;
 954                 }
 955                 ldap_free_urldesc( ludp );
 956         }
 957
 958         return 0;
 959 }
 960
 961 /*
 962  * I don't like this much, but we need two different
 963  * functions because different heap managers may be
 964  * in use in back-ldap/meta to reduce the amount of
 965  * calls to malloc routines, and some of the free()
 966  * routines may be macros with args
 967  */
 968 int
 969 rwm_dnattr_rewrite(
 970         Operation               *op,
 971         SlapReply               *rs,
 972         void                    *cookie,
 973         BerVarray               a_vals,
 974         BerVarray               *pa_nvals )
 975 {
 976         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 977         struct ldaprwmap        *rwmap =
 978                         (struct ldaprwmap *)on->on_bi.bi_private;
 979
 980         int                     i, last;
 981
 982         dncookie                dc;
 983         struct berval           dn = BER_BVNULL,
 984                                 ndn = BER_BVNULL;
 985         BerVarray               in;
 986
 987         if ( a_vals ) {
 988                 in = a_vals;
 989
 990         } else {
 991                 if ( pa_nvals == NULL || *pa_nvals == NULL ) {
 992                         return LDAP_OTHER;
 993                 }
 994                 in = *pa_nvals;
 995         }
 996
 997         /*
 998          * Rewrite the dn if needed
 999          */
1000         dc.rwmap = rwmap;
1001 #ifdef ENABLE_REWRITE
1002         dc.conn = op->o_conn;
1003         dc.rs = rs;
1004         dc.ctx = (char *)cookie;
1005 #else /* ! ENABLE_REWRITE */
1006         dc.tofrom = ((int *)cookie)[0];
1007         dc.normalized = 0;
1008 #endif /* ! ENABLE_REWRITE */
1009
1010         for ( last = 0; !BER_BVISNULL( &in[last] ); last++ );
1011         last--;
1012         if ( pa_nvals != NULL ) {
1013                 if ( *pa_nvals == NULL ) {
1014                         *pa_nvals = ch_malloc( ( last + 2 ) * sizeof(struct berval) );
1015                         memset( *pa_nvals, 0, ( last + 2 ) * sizeof(struct berval) );
1016                 }
1017         }
1018
1019         for ( i = 0; !BER_BVISNULL( &in[i] ); i++ ) {
1020                 int             rc;
1021
1022                 if ( a_vals ) {
1023                         dn = in[i];
1024                         if ( pa_nvals ) {
1025                                 ndn = (*pa_nvals)[i];
1026                                 rc = rwm_dn_massage_pretty_normalize( &dc, &in[i], &dn, &ndn );
1027                         } else {
1028                                 rc = rwm_dn_massage_pretty( &dc, &in[i], &dn );
1029                         }
1030                 } else {
1031                         ndn = in[i];
1032                         rc = rwm_dn_massage_normalize( &dc, &in[i], &ndn );
1033                 }
1034
1035                 switch ( rc ) {
1036                 case LDAP_UNWILLING_TO_PERFORM:
1037                         /*
1038                          * FIXME: need to check if it may be considered
1039                          * legal to trim values when adding/modifying;
1040                          * it should be when searching (e.g. ACLs).
1041                          */
1042                         ch_free( in[i].bv_val );
1043                         if (last > i ) {
1044                                 in[i] = in[last];
1045                                 if ( a_vals && pa_nvals ) {
1046                                         (*pa_nvals)[i] = (*pa_nvals)[last];
1047                                 }
1048                         }
1049                         BER_BVZERO( &in[last] );
1050                         if ( a_vals && pa_nvals ) {
1051                                 BER_BVZERO( &(*pa_nvals)[last] );
1052                         }
1053                         last--;
1054                         break;
1055
1056                 case LDAP_SUCCESS:
1057                         if ( a_vals ) {
1058                                 if ( !BER_BVISNULL( &dn ) && dn.bv_val != a_vals[i].bv_val ) {
1059                                         ch_free( a_vals[i].bv_val );
1060                                         a_vals[i] = dn;
1061
1062                                         if ( pa_nvals ) {
1063                                                 if ( !BER_BVISNULL( &(*pa_nvals)[i] ) ) {
1064                                                         ch_free( (*pa_nvals)[i].bv_val );
1065                                                 }
1066                                                 (*pa_nvals)[i] = ndn;
1067                                         }
1068                                 }
1069
1070                         } else {
1071                                 if ( !BER_BVISNULL( &ndn ) && ndn.bv_val != (*pa_nvals)[i].bv_val ) {
1072                                         ch_free( (*pa_nvals)[i].bv_val );
1073                                         (*pa_nvals)[i] = ndn;
1074                                 }
1075                         }
1076                         break;
1077
1078                 default:
1079                         /* leave attr untouched if massage failed */
1080                         if ( a_vals && pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
1081                                 dnNormalize( 0, NULL, NULL, &a_vals[i], &(*pa_nvals)[i], NULL );
1082                         }
1083                         break;
1084                 }
1085         }
1086
1087         return 0;
1088 }
1089
1090 int
1091 rwm_referral_result_rewrite(
1092         dncookie                *dc,
1093         BerVarray               a_vals )
1094 {
1095         int             i, last;
1096
1097         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ );
1098         last--;
1099
1100         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
1101                 struct berval   dn,
1102                                 olddn = BER_BVNULL;
1103                 int             rc;
1104                 LDAPURLDesc     *ludp;
1105
1106                 rc = ldap_url_parse( a_vals[i].bv_val, &ludp );
1107                 if ( rc != LDAP_URL_SUCCESS ) {
1108                         /* leave attr untouched if massage failed */
1109                         continue;
1110                 }
1111
1112                 /* FIXME: URLs like "ldap:///dc=suffix" if passed
1113                  * thru ldap_url_parse() and ldap_url_desc2str()
1114                  * get rewritten as "ldap:///dc=suffix??base";
1115                  * we don't want this to occur... */
1116                 if ( ludp->lud_scope == LDAP_SCOPE_BASE ) {
1117                         ludp->lud_scope = LDAP_SCOPE_DEFAULT;
1118                 }
1119
1120                 ber_str2bv( ludp->lud_dn, 0, 0, &olddn );
1121
1122                 dn = olddn;
1123                 rc = rwm_dn_massage_pretty( dc, &olddn, &dn );
1124                 switch ( rc ) {
1125                 case LDAP_UNWILLING_TO_PERFORM:
1126                         /*
1127                          * FIXME: need to check if it may be considered
1128                          * legal to trim values when adding/modifying;
1129                          * it should be when searching (e.g. ACLs).
1130                          */
1131                         ch_free( a_vals[i].bv_val );
1132                         if ( last > i ) {
1133                                 a_vals[i] = a_vals[last];
1134                         }
1135                         BER_BVZERO( &a_vals[last] );
1136                         last--;
1137                         i--;
1138                         break;
1139
1140                 default:
1141                         /* leave attr untouched if massage failed */
1142                         if ( !BER_BVISNULL( &dn ) && olddn.bv_val != dn.bv_val ) {
1143                                 char    *newurl;
1144
1145                                 ludp->lud_dn = dn.bv_val;
1146                                 newurl = ldap_url_desc2str( ludp );
1147                                 if ( newurl == NULL ) {
1148                                         /* FIXME: leave attr untouched
1149                                          * even if ldap_url_desc2str failed...
1150                                          */
1151                                         break;
1152                                 }
1153
1154                                 ch_free( a_vals[i].bv_val );
1155                                 ber_str2bv( newurl, 0, 1, &a_vals[i] );
1156                                 LDAP_FREE( newurl );
1157                                 ludp->lud_dn = olddn.bv_val;
1158                         }
1159                         break;
1160                 }
1161
1162                 ldap_free_urldesc( ludp );
1163         }
1164
1165         return 0;
1166 }
1167
1168 int
1169 rwm_dnattr_result_rewrite(
1170         dncookie                *dc,
1171         BerVarray               a_vals )
1172 {
1173         int             i, last;
1174
1175         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ );
1176         last--;
1177
1178         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
1179                 struct berval   dn;
1180                 int             rc;
1181
1182                 dn = a_vals[i];
1183                 rc = rwm_dn_massage_pretty( dc, &a_vals[i], &dn );
1184                 switch ( rc ) {
1185                 case LDAP_UNWILLING_TO_PERFORM:
1186                         /*
1187                          * FIXME: need to check if it may be considered
1188                          * legal to trim values when adding/modifying;
1189                          * it should be when searching (e.g. ACLs).
1190                          */
1191                         ch_free( a_vals[i].bv_val );
1192                         if ( last > i ) {
1193                                 a_vals[i] = a_vals[last];
1194                         }
1195                         BER_BVZERO( &a_vals[last] );
1196                         last--;
1197                         break;
1198
1199                 default:
1200                         /* leave attr untouched if massage failed */
1201                         if ( !BER_BVISNULL( &dn ) && a_vals[i].bv_val != dn.bv_val ) {
1202                                 ch_free( a_vals[i].bv_val );
1203                                 a_vals[i] = dn;
1204                         }
1205                         break;
1206                 }
1207         }
1208
1209         return 0;
1210 }
1211
1212 void
1213 rwm_mapping_dst_free( void *v_mapping )
1214 {
1215         struct ldapmapping *mapping = v_mapping;
1216
1217         if ( BER_BVISEMPTY( &mapping[0].m_dst ) ) {
1218                 rwm_mapping_free( &mapping[ -1 ] );
1219         }
1220 }
1221
1222 void
1223 rwm_mapping_free( void *v_mapping )
1224 {
1225         struct ldapmapping *mapping = v_mapping;
1226
1227         if ( !BER_BVISNULL( &mapping[0].m_src ) ) {
1228                 ch_free( mapping[0].m_src.bv_val );
1229         }
1230
1231         if ( mapping[0].m_flags & RWMMAP_F_FREE_SRC ) {
1232                 if ( mapping[0].m_flags & RWMMAP_F_IS_OC ) {
1233                         if ( mapping[0].m_src_oc ) {
1234                                 ch_free( mapping[0].m_src_oc );
1235                         }
1236
1237                 } else {
1238                         if ( mapping[0].m_src_ad ) {
1239                                 ch_free( mapping[0].m_src_ad );
1240                         }
1241                 }
1242         }
1243
1244         if ( !BER_BVISNULL( &mapping[0].m_dst ) ) {
1245                 ch_free( mapping[0].m_dst.bv_val );
1246         }
1247
1248         if ( mapping[0].m_flags & RWMMAP_F_FREE_DST ) {
1249                 if ( mapping[0].m_flags & RWMMAP_F_IS_OC ) {
1250                         if ( mapping[0].m_dst_oc ) {
1251                                 ch_free( mapping[0].m_dst_oc );
1252                         }
1253
1254                 } else {
1255                         if ( mapping[0].m_dst_ad ) {
1256                                 ch_free( mapping[0].m_dst_ad );
1257                         }
1258                 }
1259         }
1260
1261         ch_free( mapping );
1262
1263 }
1264
1265 #endif /* SLAPD_OVER_RWM */