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 1999-2007 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         /* map->map may be NULL when mapping is configured,
 146          * but map->remap can't */
 147         if ( map->remap == NULL ) {
 148                 *bv = *s;
 149                 return;
 150         }
 151
 152         BER_BVZERO( bv );
 153         ( void )rwm_mapping( map, s, &mapping, remap );
 154         if ( mapping != NULL ) {
 155                 if ( !BER_BVISNULL( &mapping->m_dst ) ) {
 156                         *bv = mapping->m_dst;
 157                 }
 158                 return;
 159         }
 160
 161         if ( !map->drop_missing ) {
 162                 *bv = *s;
 163         }
 164 }
 165
 166 /*
 167  * Map attribute names in place
 168  */
 169 int
 170 rwm_map_attrnames(
 171         struct ldapmap  *at_map,
 172         struct ldapmap  *oc_map,
 173         AttributeName   *an,
 174         AttributeName   **anp,
 175         int             remap )
 176 {
 177         int             i, j;
 178
 179         assert( anp != NULL );
 180
 181         *anp = NULL;
 182
 183         if ( an == NULL ) {
 184                 return LDAP_SUCCESS;
 185         }
 186
 187         for ( i = 0; !BER_BVISNULL( &an[i].an_name ); i++ )
 188                 /* just count */ ;
 189         *anp = ch_malloc( ( i + 1 )* sizeof( AttributeName ) );
 190         if ( *anp == NULL ) {
 191                 return LDAP_NO_MEMORY;
 192         }
 193
 194         for ( i = 0, j = 0; !BER_BVISNULL( &an[i].an_name ); i++ ) {
 195                 struct ldapmapping      *m;
 196                 int                     at_drop_missing = 0,
 197                                         oc_drop_missing = 0;
 198
 199                 if ( an[i].an_desc ) {
 200                         if ( !at_map ) {
 201                                 /* FIXME: better leave as is? */
 202                                 continue;
 203                         }
 204
 205                         at_drop_missing = rwm_mapping( at_map, &an[i].an_name, &m, remap );
 206                         if ( at_drop_missing || ( m && BER_BVISNULL( &m->m_dst ) ) ) {
 207                                 continue;
 208                         }
 209
 210                         if ( !m ) {
 211                                 (*anp)[j] = an[i];
 212                                 j++;
 213                                 continue;
 214                         }
 215
 216                         (*anp)[j] = an[i];
 217                         if ( remap == RWM_MAP ) {
 218                                 (*anp)[j].an_name = m->m_dst;
 219                                 (*anp)[j].an_desc = m->m_dst_ad;
 220                         } else {
 221                                 (*anp)[j].an_name = m->m_src;
 222                                 (*anp)[j].an_desc = m->m_src_ad;
 223
 224                         }
 225
 226                         j++;
 227                         continue;
 228
 229                 } else if ( an[i].an_oc ) {
 230                         if ( !oc_map ) {
 231                                 /* FIXME: better leave as is? */
 232                                 continue;
 233                         }
 234
 235                         oc_drop_missing = rwm_mapping( oc_map, &an[i].an_name, &m, remap );
 236
 237                         if ( oc_drop_missing || ( m && BER_BVISNULL( &m->m_dst ) ) ) {
 238                                 continue;
 239                         }
 240
 241                         if ( !m ) {
 242                                 (*anp)[j] = an[i];
 243                                 j++;
 244                                 continue;
 245                         }
 246
 247                         (*anp)[j] = an[i];
 248                         if ( remap == RWM_MAP ) {
 249                                 (*anp)[j].an_name = m->m_dst;
 250                                 (*anp)[j].an_oc = m->m_dst_oc;
 251                         } else {
 252                                 (*anp)[j].an_name = m->m_src;
 253                                 (*anp)[j].an_oc = m->m_src_oc;
 254                         }
 255
 256                 } else {
 257                         at_drop_missing = rwm_mapping( at_map, &an[i].an_name, &m, remap );
 258
 259                         if ( at_drop_missing || !m ) {
 260                                 oc_drop_missing = rwm_mapping( oc_map, &an[i].an_name, &m, remap );
 261
 262                                 /* if both at_map and oc_map required to drop missing,
 263                                  * then do it */
 264                                 if ( oc_drop_missing && at_drop_missing ) {
 265                                         continue;
 266                                 }
 267
 268                                 /* if no oc_map mapping was found and at_map required
 269                                  * to drop missing, then do it; otherwise, at_map wins
 270                                  * and an is considered an attr and is left unchanged */
 271                                 if ( !m ) {
 272                                         if ( at_drop_missing ) {
 273                                                 continue;
 274                                         }
 275                                         (*anp)[j] = an[i];
 276                                         j++;
 277                                         continue;
 278                                 }
 279
 280                                 if ( BER_BVISNULL( &m->m_dst ) ) {
 281                                         continue;
 282                                 }
 283
 284                                 (*anp)[j] = an[i];
 285                                 if ( remap == RWM_MAP ) {
 286                                         (*anp)[j].an_name = m->m_dst;
 287                                         (*anp)[j].an_oc = m->m_dst_oc;
 288                                 } else {
 289                                         (*anp)[j].an_name = m->m_src;
 290                                         (*anp)[j].an_oc = m->m_src_oc;
 291                                 }
 292                                 j++;
 293                                 continue;
 294                         }
 295
 296                         if ( !BER_BVISNULL( &m->m_dst ) ) {
 297                                 (*anp)[j] = an[i];
 298                                 if ( remap == RWM_MAP ) {
 299                                         (*anp)[j].an_name = m->m_dst;
 300                                         (*anp)[j].an_desc = m->m_dst_ad;
 301                                 } else {
 302                                         (*anp)[j].an_name = m->m_src;
 303                                         (*anp)[j].an_desc = m->m_src_ad;
 304                                 }
 305                                 j++;
 306                                 continue;
 307                         }
 308                 }
 309         }
 310
 311         if ( j == 0 && i != 0 ) {
 312                 memset( &(*anp)[0], 0, sizeof( AttributeName ) );
 313                 BER_BVSTR( &(*anp)[0].an_name, LDAP_NO_ATTRS );
 314                 j = 1;
 315         }
 316         memset( &(*anp)[j], 0, sizeof( AttributeName ) );
 317
 318         return LDAP_SUCCESS;
 319 }
 320
 321 int
 322 rwm_map_attrs(
 323         struct ldapmap  *at_map,
 324         AttributeName   *an,
 325         int             remap,
 326         char            ***mapped_attrs )
 327 {
 328         int i, j;
 329         char **na;
 330
 331         if ( an == NULL ) {
 332                 *mapped_attrs = NULL;
 333                 return LDAP_SUCCESS;
 334         }
 335
 336         for ( i = 0; !BER_BVISNULL( &an[ i ].an_name ); i++ )
 337                 /* count'em */ ;
 338
 339         na = (char **)ch_calloc( i + 1, sizeof( char * ) );
 340         if ( na == NULL ) {
 341                 *mapped_attrs = NULL;
 342                 return LDAP_NO_MEMORY;
 343         }
 344
 345         for ( i = j = 0; !BER_BVISNULL( &an[i].an_name ); i++ ) {
 346                 struct ldapmapping      *mapping;
 347
 348                 if ( rwm_mapping( at_map, &an[i].an_name, &mapping, remap ) ) {
 349                         continue;
 350                 }
 351
 352                 if ( !mapping ) {
 353                         na[ j++ ] = an[ i ].an_name.bv_val;
 354
 355                 } else if ( !BER_BVISNULL( &mapping->m_dst ) ) {
 356                         na[ j++ ] = mapping->m_dst.bv_val;
 357                 }
 358         }
 359
 360         if ( j == 0 && i != 0 ) {
 361                 na[ j++ ] = LDAP_NO_ATTRS;
 362         }
 363
 364         na[ j ] = NULL;
 365
 366         *mapped_attrs = na;
 367
 368         return LDAP_SUCCESS;
 369 }
 370
 371 static int
 372 map_attr_value(
 373         dncookie                *dc,
 374         AttributeDescription    **adp,
 375         struct berval           *mapped_attr,
 376         struct berval           *value,
 377         struct berval           *mapped_value,
 378         int                     remap )
 379 {
 380         struct berval           vtmp = BER_BVNULL;
 381         int                     freeval = 0;
 382         AttributeDescription    *ad = *adp;
 383         struct ldapmapping      *mapping = NULL;
 384
 385         rwm_mapping( &dc->rwmap->rwm_at, &ad->ad_cname, &mapping, remap );
 386         if ( mapping == NULL ) {
 387                 if ( dc->rwmap->rwm_at.drop_missing ) {
 388                         return -1;
 389                 }
 390
 391                 *mapped_attr = ad->ad_cname;
 392
 393         } else {
 394                 *mapped_attr = mapping->m_dst;
 395         }
 396
 397         if ( value != NULL ) {
 398                 assert( mapped_value != NULL );
 399
 400                 if ( ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName
 401                                 || ( mapping != NULL && mapping->m_dst_ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) )
 402                 {
 403                         dncookie        fdc = *dc;
 404                         int             rc;
 405
 406                         fdc.ctx = "searchFilterAttrDN";
 407
 408                         vtmp = *value;
 409                         rc = rwm_dn_massage_normalize( &fdc, value, &vtmp );
 410                         switch ( rc ) {
 411                         case LDAP_SUCCESS:
 412                                 if ( vtmp.bv_val != value->bv_val ) {
 413                                         freeval = 1;
 414                                 }
 415                                 break;
 416
 417                         case LDAP_UNWILLING_TO_PERFORM:
 418                         case LDAP_OTHER:
 419                         default:
 420                                 return -1;
 421                         }
 422
 423                 } else if ( ad == slap_schema.si_ad_objectClass
 424                                 || ad == slap_schema.si_ad_structuralObjectClass )
 425                 {
 426                         rwm_map( &dc->rwmap->rwm_oc, value, &vtmp, remap );
 427                         if ( BER_BVISNULL( &vtmp ) || BER_BVISEMPTY( &vtmp ) ) {
 428                                 vtmp = *value;
 429                         }
 430
 431                 } else {
 432                         vtmp = *value;
 433                 }
 434
 435                 filter_escape_value( &vtmp, mapped_value );
 436
 437                 if ( freeval ) {
 438                         ch_free( vtmp.bv_val );
 439                 }
 440         }
 441
 442         if ( mapping != NULL ) {
 443                 assert( mapping->m_dst_ad != NULL );
 444                 *adp = mapping->m_dst_ad;
 445         }
 446
 447         return 0;
 448 }
 449
 450 static int
 451 rwm_int_filter_map_rewrite(
 452         Operation               *op,
 453         dncookie                *dc,
 454         Filter                  *f,
 455         struct berval           *fstr )
 456 {
 457         int             i;
 458         Filter          *p;
 459         AttributeDescription *ad;
 460         struct berval   atmp,
 461                         vtmp,
 462                         *tmp;
 463         static struct berval
 464                         /* better than nothing... */
 465                         ber_bvfalse = BER_BVC( "(!(objectClass=*))" ),
 466                         ber_bvtf_false = BER_BVC( "(|)" ),
 467                         /* better than nothing... */
 468                         ber_bvtrue = BER_BVC( "(objectClass=*)" ),
 469                         ber_bvtf_true = BER_BVC( "(&)" ),
 470 #if 0
 471                         /* no longer needed; preserved for completeness */
 472                         ber_bvundefined = BER_BVC( "(?=undefined)" ),
 473 #endif
 474                         ber_bverror = BER_BVC( "(?=error)" ),
 475                         ber_bvunknown = BER_BVC( "(?=unknown)" ),
 476                         ber_bvnone = BER_BVC( "(?=none)" );
 477         ber_len_t       len;
 478
 479         assert( fstr != NULL );
 480         BER_BVZERO( fstr );
 481
 482         if ( f == NULL ) {
 483                 ber_dupbv( fstr, &ber_bvnone );
 484                 return LDAP_OTHER;
 485         }
 486
 487         switch ( f->f_choice & SLAPD_FILTER_MASK ) {
 488         case LDAP_FILTER_EQUALITY:
 489                 ad = f->f_av_desc;
 490                 if ( map_attr_value( dc, &ad, &atmp,
 491                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 492                 {
 493                         goto computed;
 494                 }
 495
 496                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(=)" );
 497                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 498
 499                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=%s)",
 500                         atmp.bv_val, vtmp.bv_len ? vtmp.bv_val : "" );
 501
 502                 ch_free( vtmp.bv_val );
 503                 break;
 504
 505         case LDAP_FILTER_GE:
 506                 ad = f->f_av_desc;
 507                 if ( map_attr_value( dc, &ad, &atmp,
 508                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 509                 {
 510                         goto computed;
 511                 }
 512
 513                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(>=)" );
 514                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 515
 516                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s>=%s)",
 517                         atmp.bv_val, vtmp.bv_len ? vtmp.bv_val : "" );
 518
 519                 ch_free( vtmp.bv_val );
 520                 break;
 521
 522         case LDAP_FILTER_LE:
 523                 ad = f->f_av_desc;
 524                 if ( map_attr_value( dc, &ad, &atmp,
 525                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 526                 {
 527                         goto computed;
 528                 }
 529
 530                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(<=)" );
 531                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 532
 533                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s<=%s)",
 534                         atmp.bv_val, vtmp.bv_len ? vtmp.bv_val : "" );
 535
 536                 ch_free( vtmp.bv_val );
 537                 break;
 538
 539         case LDAP_FILTER_APPROX:
 540                 ad = f->f_av_desc;
 541                 if ( map_attr_value( dc, &ad, &atmp,
 542                                         &f->f_av_value, &vtmp, RWM_MAP ) )
 543                 {
 544                         goto computed;
 545                 }
 546
 547                 fstr->bv_len = atmp.bv_len + vtmp.bv_len + STRLENOF( "(~=)" );
 548                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 549
 550                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s~=%s)",
 551                         atmp.bv_val, vtmp.bv_len ? vtmp.bv_val : "" );
 552
 553                 ch_free( vtmp.bv_val );
 554                 break;
 555
 556         case LDAP_FILTER_SUBSTRINGS:
 557                 ad = f->f_sub_desc;
 558                 if ( map_attr_value( dc, &ad, &atmp,
 559                                         NULL, NULL, RWM_MAP ) )
 560                 {
 561                         goto computed;
 562                 }
 563
 564                 /* cannot be a DN ... */
 565
 566                 fstr->bv_len = atmp.bv_len + STRLENOF( "(=*)" );
 567                 fstr->bv_val = ch_malloc( fstr->bv_len + 128 );
 568
 569                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
 570                         atmp.bv_val );
 571
 572                 if ( !BER_BVISNULL( &f->f_sub_initial ) ) {
 573                         len = fstr->bv_len;
 574
 575                         filter_escape_value( &f->f_sub_initial, &vtmp );
 576
 577                         fstr->bv_len += vtmp.bv_len;
 578                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 579
 580                         snprintf( &fstr->bv_val[len - 2], vtmp.bv_len + 3,
 581                                 /* "(attr=" */ "%s*)",
 582                                 vtmp.bv_len ? vtmp.bv_val : "" );
 583
 584                         ch_free( vtmp.bv_val );
 585                 }
 586
 587                 if ( f->f_sub_any != NULL ) {
 588                         for ( i = 0; !BER_BVISNULL( &f->f_sub_any[i] ); i++ ) {
 589                                 len = fstr->bv_len;
 590                                 filter_escape_value( &f->f_sub_any[i], &vtmp );
 591
 592                                 fstr->bv_len += vtmp.bv_len + 1;
 593                                 fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 594
 595                                 snprintf( &fstr->bv_val[len - 1], vtmp.bv_len + 3,
 596                                         /* "(attr=[init]*[any*]" */ "%s*)",
 597                                         vtmp.bv_len ? vtmp.bv_val : "" );
 598                                 ch_free( vtmp.bv_val );
 599                         }
 600                 }
 601
 602                 if ( !BER_BVISNULL( &f->f_sub_final ) ) {
 603                         len = fstr->bv_len;
 604
 605                         filter_escape_value( &f->f_sub_final, &vtmp );
 606
 607                         fstr->bv_len += vtmp.bv_len;
 608                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 609
 610                         snprintf( &fstr->bv_val[len - 1], vtmp.bv_len + 3,
 611                                 /* "(attr=[init*][any*]" */ "%s)",
 612                                 vtmp.bv_len ? vtmp.bv_val : "" );
 613
 614                         ch_free( vtmp.bv_val );
 615                 }
 616
 617                 break;
 618
 619         case LDAP_FILTER_PRESENT:
 620                 ad = f->f_desc;
 621                 if ( map_attr_value( dc, &ad, &atmp,
 622                                         NULL, NULL, RWM_MAP ) )
 623                 {
 624                         goto computed;
 625                 }
 626
 627                 fstr->bv_len = atmp.bv_len + STRLENOF( "(=*)" );
 628                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 629
 630                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
 631                         atmp.bv_val );
 632                 break;
 633
 634         case LDAP_FILTER_AND:
 635         case LDAP_FILTER_OR:
 636         case LDAP_FILTER_NOT:
 637                 fstr->bv_len = STRLENOF( "(%)" );
 638                 fstr->bv_val = ch_malloc( fstr->bv_len + 128 );
 639
 640                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%c)",
 641                         f->f_choice == LDAP_FILTER_AND ? '&' :
 642                         f->f_choice == LDAP_FILTER_OR ? '|' : '!' );
 643
 644                 for ( p = f->f_list; p != NULL; p = p->f_next ) {
 645                         int     rc;
 646
 647                         len = fstr->bv_len;
 648
 649                         rc = rwm_int_filter_map_rewrite( op, dc, p, &vtmp );
 650                         if ( rc != LDAP_SUCCESS ) {
 651                                 return rc;
 652                         }
 653
 654                         fstr->bv_len += vtmp.bv_len;
 655                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 656
 657                         snprintf( &fstr->bv_val[len-1], vtmp.bv_len + 2,
 658                                 /*"("*/ "%s)", vtmp.bv_len ? vtmp.bv_val : "" );
 659
 660                         ch_free( vtmp.bv_val );
 661                 }
 662
 663                 break;
 664
 665         case LDAP_FILTER_EXT: {
 666                 if ( f->f_mr_desc ) {
 667                         ad = f->f_mr_desc;
 668                         if ( map_attr_value( dc, &ad, &atmp,
 669                                                 &f->f_mr_value, &vtmp, RWM_MAP ) )
 670                         {
 671                                 goto computed;
 672                         }
 673
 674                 } else {
 675                         BER_BVSTR( &atmp, "" );
 676                         filter_escape_value( &f->f_mr_value, &vtmp );
 677                 }
 678
 679
 680                 fstr->bv_len = atmp.bv_len +
 681                         ( f->f_mr_dnattrs ? STRLENOF( ":dn" ) : 0 ) +
 682                         ( f->f_mr_rule_text.bv_len ? f->f_mr_rule_text.bv_len + 1 : 0 ) +
 683                         vtmp.bv_len + STRLENOF( "(:=)" );
 684                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 685
 686                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s%s%s:=%s)",
 687                         atmp.bv_val,
 688                         f->f_mr_dnattrs ? ":dn" : "",
 689                         !BER_BVISEMPTY( &f->f_mr_rule_text ) ? ":" : "",
 690                         !BER_BVISEMPTY( &f->f_mr_rule_text ) ? f->f_mr_rule_text.bv_val : "",
 691                         vtmp.bv_len ? vtmp.bv_val : "" );
 692                 ch_free( vtmp.bv_val );
 693                 break;
 694         }
 695
 696         case -1:
 697 computed:;
 698                 filter_free_x( op, f );
 699                 f->f_choice = SLAPD_FILTER_COMPUTED;
 700                 f->f_result = SLAPD_COMPARE_UNDEFINED;
 701                 /* fallthru */
 702
 703         case SLAPD_FILTER_COMPUTED:
 704                 switch ( f->f_result ) {
 705                 case LDAP_COMPARE_FALSE:
 706                 /* FIXME: treat UNDEFINED as FALSE */
 707                 case SLAPD_COMPARE_UNDEFINED:
 708                         if ( dc->rwmap->rwm_flags & RWM_F_SUPPORT_T_F ) {
 709                                 tmp = &ber_bvtf_false;
 710                                 break;
 711                         }
 712                         tmp = &ber_bvfalse;
 713                         break;
 714
 715                 case LDAP_COMPARE_TRUE:
 716                         if ( dc->rwmap->rwm_flags & RWM_F_SUPPORT_T_F ) {
 717                                 tmp = &ber_bvtf_true;
 718                                 break;
 719                         }
 720                         tmp = &ber_bvtrue;
 721                         break;
 722
 723                 default:
 724                         tmp = &ber_bverror;
 725                         break;
 726                 }
 727
 728                 ber_dupbv( fstr, tmp );
 729                 break;
 730
 731         default:
 732                 ber_dupbv( fstr, &ber_bvunknown );
 733                 break;
 734         }
 735
 736         return LDAP_SUCCESS;
 737 }
 738
 739 int
 740 rwm_filter_map_rewrite(
 741         Operation               *op,
 742         dncookie                *dc,
 743         Filter                  *f,
 744         struct berval           *fstr )
 745 {
 746         int             rc;
 747         dncookie        fdc;
 748         struct berval   ftmp;
 749
 750         rc = rwm_int_filter_map_rewrite( op, dc, f, fstr );
 751
 752         if ( rc != 0 ) {
 753                 return rc;
 754         }
 755
 756         fdc = *dc;
 757         ftmp = *fstr;
 758
 759         fdc.ctx = "searchFilter";
 760
 761         switch ( rewrite_session( fdc.rwmap->rwm_rw, fdc.ctx,
 762                                 ( !BER_BVISEMPTY( &ftmp ) ? ftmp.bv_val : "" ),
 763                                 fdc.conn, &fstr->bv_val ) )
 764         {
 765         case REWRITE_REGEXEC_OK:
 766                 if ( !BER_BVISNULL( fstr ) ) {
 767                         fstr->bv_len = strlen( fstr->bv_val );
 768                         if ( fstr->bv_val != ftmp.bv_val ) {
 769                                 ch_free( ftmp.bv_val );
 770                         }
 771
 772                 } else {
 773                         *fstr = ftmp;
 774                 }
 775
 776                 Debug( LDAP_DEBUG_ARGS,
 777                         "[rw] %s: \"%s\" -> \"%s\"\n",
 778                         fdc.ctx, ftmp.bv_val, fstr->bv_val );
 779                 rc = LDAP_SUCCESS;
 780                 break;
 781
 782         case REWRITE_REGEXEC_UNWILLING:
 783                 if ( fdc.rs ) {
 784                         fdc.rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 785                         fdc.rs->sr_text = "Operation not allowed";
 786                 }
 787                 rc = LDAP_UNWILLING_TO_PERFORM;
 788                 break;
 789
 790         case REWRITE_REGEXEC_ERR:
 791                 if ( fdc.rs ) {
 792                         fdc.rs->sr_err = LDAP_OTHER;
 793                         fdc.rs->sr_text = "Rewrite error";
 794                 }
 795                 rc = LDAP_OTHER;
 796                 break;
 797         }
 798
 799         return rc;
 800 }
 801
 802 /*
 803  * I don't like this much, but we need two different
 804  * functions because different heap managers may be
 805  * in use in back-ldap/meta to reduce the amount of
 806  * calls to malloc routines, and some of the free()
 807  * routines may be macros with args
 808  */
 809 int
 810 rwm_referral_rewrite(
 811         Operation               *op,
 812         SlapReply               *rs,
 813         void                    *cookie,
 814         BerVarray               a_vals,
 815         BerVarray               *pa_nvals )
 816 {
 817         slap_overinst           *on = (slap_overinst *) op->o_bd->bd_info;
 818         struct ldaprwmap        *rwmap =
 819                         (struct ldaprwmap *)on->on_bi.bi_private;
 820
 821         int                     i, last;
 822
 823         dncookie                dc;
 824         struct berval           dn = BER_BVNULL,
 825                                 ndn = BER_BVNULL;
 826
 827         assert( a_vals != NULL );
 828
 829         /*
 830          * Rewrite the dn if needed
 831          */
 832         dc.rwmap = rwmap;
 833         dc.conn = op->o_conn;
 834         dc.rs = rs;
 835         dc.ctx = (char *)cookie;
 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         dc.conn = op->o_conn;
1002         dc.rs = rs;
1003         dc.ctx = (char *)cookie;
1004
1005         for ( last = 0; !BER_BVISNULL( &in[last] ); last++ );
1006         last--;
1007         if ( pa_nvals != NULL ) {
1008                 if ( *pa_nvals == NULL ) {
1009                         *pa_nvals = ch_malloc( ( last + 2 ) * sizeof(struct berval) );
1010                         memset( *pa_nvals, 0, ( last + 2 ) * sizeof(struct berval) );
1011                 }
1012         }
1013
1014         for ( i = 0; !BER_BVISNULL( &in[i] ); i++ ) {
1015                 int             rc;
1016
1017                 if ( a_vals ) {
1018                         dn = in[i];
1019                         if ( pa_nvals ) {
1020                                 ndn = (*pa_nvals)[i];
1021                                 rc = rwm_dn_massage_pretty_normalize( &dc, &in[i], &dn, &ndn );
1022                         } else {
1023                                 rc = rwm_dn_massage_pretty( &dc, &in[i], &dn );
1024                         }
1025                 } else {
1026                         ndn = in[i];
1027                         rc = rwm_dn_massage_normalize( &dc, &in[i], &ndn );
1028                 }
1029
1030                 switch ( rc ) {
1031                 case LDAP_UNWILLING_TO_PERFORM:
1032                         /*
1033                          * FIXME: need to check if it may be considered
1034                          * legal to trim values when adding/modifying;
1035                          * it should be when searching (e.g. ACLs).
1036                          */
1037                         ch_free( in[i].bv_val );
1038                         if (last > i ) {
1039                                 in[i] = in[last];
1040                                 if ( a_vals && pa_nvals ) {
1041                                         (*pa_nvals)[i] = (*pa_nvals)[last];
1042                                 }
1043                         }
1044                         BER_BVZERO( &in[last] );
1045                         if ( a_vals && pa_nvals ) {
1046                                 BER_BVZERO( &(*pa_nvals)[last] );
1047                         }
1048                         last--;
1049                         break;
1050
1051                 case LDAP_SUCCESS:
1052                         if ( a_vals ) {
1053                                 if ( !BER_BVISNULL( &dn ) && dn.bv_val != a_vals[i].bv_val ) {
1054                                         ch_free( a_vals[i].bv_val );
1055                                         a_vals[i] = dn;
1056
1057                                         if ( pa_nvals ) {
1058                                                 if ( !BER_BVISNULL( &(*pa_nvals)[i] ) ) {
1059                                                         ch_free( (*pa_nvals)[i].bv_val );
1060                                                 }
1061                                                 (*pa_nvals)[i] = ndn;
1062                                         }
1063                                 }
1064
1065                         } else {
1066                                 if ( !BER_BVISNULL( &ndn ) && ndn.bv_val != (*pa_nvals)[i].bv_val ) {
1067                                         ch_free( (*pa_nvals)[i].bv_val );
1068                                         (*pa_nvals)[i] = ndn;
1069                                 }
1070                         }
1071                         break;
1072
1073                 default:
1074                         /* leave attr untouched if massage failed */
1075                         if ( a_vals && pa_nvals && BER_BVISNULL( &(*pa_nvals)[i] ) ) {
1076                                 dnNormalize( 0, NULL, NULL, &a_vals[i], &(*pa_nvals)[i], NULL );
1077                         }
1078                         break;
1079                 }
1080         }
1081
1082         return 0;
1083 }
1084
1085 int
1086 rwm_referral_result_rewrite(
1087         dncookie                *dc,
1088         BerVarray               a_vals )
1089 {
1090         int             i, last;
1091
1092         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ );
1093         last--;
1094
1095         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
1096                 struct berval   dn,
1097                                 olddn = BER_BVNULL;
1098                 int             rc;
1099                 LDAPURLDesc     *ludp;
1100
1101                 rc = ldap_url_parse( a_vals[i].bv_val, &ludp );
1102                 if ( rc != LDAP_URL_SUCCESS ) {
1103                         /* leave attr untouched if massage failed */
1104                         continue;
1105                 }
1106
1107                 /* FIXME: URLs like "ldap:///dc=suffix" if passed
1108                  * thru ldap_url_parse() and ldap_url_desc2str()
1109                  * get rewritten as "ldap:///dc=suffix??base";
1110                  * we don't want this to occur... */
1111                 if ( ludp->lud_scope == LDAP_SCOPE_BASE ) {
1112                         ludp->lud_scope = LDAP_SCOPE_DEFAULT;
1113                 }
1114
1115                 ber_str2bv( ludp->lud_dn, 0, 0, &olddn );
1116
1117                 dn = olddn;
1118                 rc = rwm_dn_massage_pretty( dc, &olddn, &dn );
1119                 switch ( rc ) {
1120                 case LDAP_UNWILLING_TO_PERFORM:
1121                         /*
1122                          * FIXME: need to check if it may be considered
1123                          * legal to trim values when adding/modifying;
1124                          * it should be when searching (e.g. ACLs).
1125                          */
1126                         ch_free( a_vals[i].bv_val );
1127                         if ( last > i ) {
1128                                 a_vals[i] = a_vals[last];
1129                         }
1130                         BER_BVZERO( &a_vals[last] );
1131                         last--;
1132                         i--;
1133                         break;
1134
1135                 default:
1136                         /* leave attr untouched if massage failed */
1137                         if ( !BER_BVISNULL( &dn ) && olddn.bv_val != dn.bv_val ) {
1138                                 char    *newurl;
1139
1140                                 ludp->lud_dn = dn.bv_val;
1141                                 newurl = ldap_url_desc2str( ludp );
1142                                 if ( newurl == NULL ) {
1143                                         /* FIXME: leave attr untouched
1144                                          * even if ldap_url_desc2str failed...
1145                                          */
1146                                         break;
1147                                 }
1148
1149                                 ch_free( a_vals[i].bv_val );
1150                                 ber_str2bv( newurl, 0, 1, &a_vals[i] );
1151                                 LDAP_FREE( newurl );
1152                                 ludp->lud_dn = olddn.bv_val;
1153                         }
1154                         break;
1155                 }
1156
1157                 ldap_free_urldesc( ludp );
1158         }
1159
1160         return 0;
1161 }
1162
1163 int
1164 rwm_dnattr_result_rewrite(
1165         dncookie                *dc,
1166         BerVarray               a_vals )
1167 {
1168         int             i, last;
1169
1170         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ );
1171         last--;
1172
1173         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
1174                 struct berval   dn;
1175                 int             rc;
1176
1177                 dn = a_vals[i];
1178                 rc = rwm_dn_massage_pretty( dc, &a_vals[i], &dn );
1179                 switch ( rc ) {
1180                 case LDAP_UNWILLING_TO_PERFORM:
1181                         /*
1182                          * FIXME: need to check if it may be considered
1183                          * legal to trim values when adding/modifying;
1184                          * it should be when searching (e.g. ACLs).
1185                          */
1186                         ch_free( a_vals[i].bv_val );
1187                         if ( last > i ) {
1188                                 a_vals[i] = a_vals[last];
1189                         }
1190                         BER_BVZERO( &a_vals[last] );
1191                         last--;
1192                         break;
1193
1194                 default:
1195                         /* leave attr untouched if massage failed */
1196                         if ( !BER_BVISNULL( &dn ) && a_vals[i].bv_val != dn.bv_val ) {
1197                                 ch_free( a_vals[i].bv_val );
1198                                 a_vals[i] = dn;
1199                         }
1200                         break;
1201                 }
1202         }
1203
1204         return 0;
1205 }
1206
1207 void
1208 rwm_mapping_dst_free( void *v_mapping )
1209 {
1210         struct ldapmapping *mapping = v_mapping;
1211
1212         if ( BER_BVISEMPTY( &mapping[0].m_dst ) ) {
1213                 rwm_mapping_free( &mapping[ -1 ] );
1214         }
1215 }
1216
1217 void
1218 rwm_mapping_free( void *v_mapping )
1219 {
1220         struct ldapmapping *mapping = v_mapping;
1221
1222         if ( !BER_BVISNULL( &mapping[0].m_src ) ) {
1223                 ch_free( mapping[0].m_src.bv_val );
1224         }
1225
1226         if ( mapping[0].m_flags & RWMMAP_F_FREE_SRC ) {
1227                 if ( mapping[0].m_flags & RWMMAP_F_IS_OC ) {
1228                         if ( mapping[0].m_src_oc ) {
1229                                 ch_free( mapping[0].m_src_oc );
1230                         }
1231
1232                 } else {
1233                         if ( mapping[0].m_src_ad ) {
1234                                 ch_free( mapping[0].m_src_ad );
1235                         }
1236                 }
1237         }
1238
1239         if ( !BER_BVISNULL( &mapping[0].m_dst ) ) {
1240                 ch_free( mapping[0].m_dst.bv_val );
1241         }
1242
1243         if ( mapping[0].m_flags & RWMMAP_F_FREE_DST ) {
1244                 if ( mapping[0].m_flags & RWMMAP_F_IS_OC ) {
1245                         if ( mapping[0].m_dst_oc ) {
1246                                 ch_free( mapping[0].m_dst_oc );
1247                         }
1248
1249                 } else {
1250                         if ( mapping[0].m_dst_ad ) {
1251                                 ch_free( mapping[0].m_dst_ad );
1252                         }
1253                 }
1254         }
1255
1256         ch_free( mapping );
1257
1258 }
1259
1260 #endif /* SLAPD_OVER_RWM */