git.sur5r.net Git - openldap/blob - servers/slapd/back-meta/map.c

   1 /* map.c - ldap backend mapping routines */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2008 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* ACKNOWLEDGEMENTS:
  17  * This work was initially developed by the Howard Chu for inclusion
  18  * in OpenLDAP Software and subsequently enhanced by Pierangelo
  19  * Masarati.
  20  */
  21 /* This is an altered version */
  22 /*
  23  * Copyright 1999, Howard Chu, All rights reserved. <hyc@highlandsun.com>
  24  *
  25  * Permission is granted to anyone to use this software for any purpose
  26  * on any computer system, and to alter it and redistribute it, subject
  27  * to the following restrictions:
  28  *
  29  * 1. The author is not responsible for the consequences of use of this
  30  *    software, no matter how awful, even if they arise from flaws in it.
  31  *
  32  * 2. The origin of this software must not be misrepresented, either by
  33  *    explicit claim or by omission.  Since few users ever read sources,
  34  *    credits should appear in the documentation.
  35  *
  36  * 3. Altered versions must be plainly marked as such, and must not be
  37  *    misrepresented as being the original software.  Since few users
  38  *    ever read sources, credits should appear in the documentation.
  39  *
  40  * 4. This notice may not be removed or altered.
  41  *
  42  *
  43  *
  44  * Copyright 2000, Pierangelo Masarati, All rights reserved. <ando@sys-net.it>
  45  *
  46  * This software is being modified by Pierangelo Masarati.
  47  * The previously reported conditions apply to the modified code as well.
  48  * Changes in the original code are highlighted where required.
  49  * Credits for the original code go to the author, Howard Chu.
  50  */
  51
  52 #include "portable.h"
  53
  54 #include <stdio.h>
  55
  56 #include <ac/string.h>
  57 #include <ac/socket.h>
  58
  59 #include "slap.h"
  60 #include "lutil.h"
  61 #include "../back-ldap/back-ldap.h"
  62 #include "back-meta.h"
  63
  64 #undef ldap_debug       /* silence a warning in ldap-int.h */
  65 #include "../../../libraries/libldap/ldap-int.h"
  66
  67 int
  68 mapping_cmp ( const void *c1, const void *c2 )
  69 {
  70         struct ldapmapping *map1 = (struct ldapmapping *)c1;
  71         struct ldapmapping *map2 = (struct ldapmapping *)c2;
  72         int rc = map1->src.bv_len - map2->src.bv_len;
  73         if (rc) return rc;
  74         return ( strcasecmp( map1->src.bv_val, map2->src.bv_val ) );
  75 }
  76
  77 int
  78 mapping_dup ( void *c1, void *c2 )
  79 {
  80         struct ldapmapping *map1 = (struct ldapmapping *)c1;
  81         struct ldapmapping *map2 = (struct ldapmapping *)c2;
  82
  83         return ( ( strcasecmp( map1->src.bv_val, map2->src.bv_val ) == 0 ) ? -1 : 0 );
  84 }
  85
  86 void
  87 ldap_back_map_init ( struct ldapmap *lm, struct ldapmapping **m )
  88 {
  89         struct ldapmapping *mapping;
  90
  91         assert( m != NULL );
  92
  93         *m = NULL;
  94
  95         mapping = (struct ldapmapping *)ch_calloc( 2,
  96                         sizeof( struct ldapmapping ) );
  97         if ( mapping == NULL ) {
  98                 return;
  99         }
 100
 101         ber_str2bv( "objectclass", STRLENOF("objectclass"), 1, &mapping[0].src);
 102         ber_dupbv( &mapping[0].dst, &mapping[0].src );
 103         mapping[1].src = mapping[0].src;
 104         mapping[1].dst = mapping[0].dst;
 105
 106         avl_insert( &lm->map, (caddr_t)&mapping[0],
 107                         mapping_cmp, mapping_dup );
 108         avl_insert( &lm->remap, (caddr_t)&mapping[1],
 109                         mapping_cmp, mapping_dup );
 110         *m = mapping;
 111 }
 112
 113 int
 114 ldap_back_mapping ( struct ldapmap *map, struct berval *s, struct ldapmapping **m,
 115         int remap )
 116 {
 117         Avlnode *tree;
 118         struct ldapmapping fmapping;
 119
 120         assert( m != NULL );
 121
 122         if ( remap == BACKLDAP_REMAP ) {
 123                 tree = map->remap;
 124
 125         } else {
 126                 tree = map->map;
 127         }
 128
 129         fmapping.src = *s;
 130         *m = (struct ldapmapping *)avl_find( tree, (caddr_t)&fmapping, mapping_cmp );
 131         if ( *m == NULL ) {
 132                 return map->drop_missing;
 133         }
 134
 135         return 0;
 136 }
 137
 138 void
 139 ldap_back_map ( struct ldapmap *map, struct berval *s, struct berval *bv,
 140         int remap )
 141 {
 142         struct ldapmapping *mapping;
 143
 144         /* map->map may be NULL when mapping is configured,
 145          * but map->remap can't */
 146         if ( map->remap == NULL ) {
 147                 *bv = *s;
 148                 return;
 149         }
 150
 151         BER_BVZERO( bv );
 152         ( void )ldap_back_mapping( map, s, &mapping, remap );
 153         if ( mapping != NULL ) {
 154                 if ( !BER_BVISNULL( &mapping->dst ) ) {
 155                         *bv = mapping->dst;
 156                 }
 157                 return;
 158         }
 159
 160         if ( !map->drop_missing ) {
 161                 *bv = *s;
 162         }
 163 }
 164
 165 int
 166 ldap_back_map_attrs(
 167                 struct ldapmap *at_map,
 168                 AttributeName *an,
 169                 int remap,
 170                 char ***mapped_attrs
 171 )
 172 {
 173         int i, j;
 174         char **na;
 175         struct berval mapped;
 176
 177         if ( an == NULL ) {
 178                 *mapped_attrs = NULL;
 179                 return LDAP_SUCCESS;
 180         }
 181
 182         for ( i = 0; !BER_BVISNULL( &an[i].an_name ); i++ )
 183                 /*  */ ;
 184
 185         na = (char **)ch_calloc( i + 1, sizeof(char *) );
 186         if ( na == NULL ) {
 187                 *mapped_attrs = NULL;
 188                 return LDAP_NO_MEMORY;
 189         }
 190
 191         for ( i = j = 0; !BER_BVISNULL( &an[i].an_name ); i++ ) {
 192                 ldap_back_map( at_map, &an[i].an_name, &mapped, remap );
 193                 if ( !BER_BVISNULL( &mapped ) && !BER_BVISEMPTY( &mapped ) ) {
 194                         na[j++] = mapped.bv_val;
 195                 }
 196         }
 197         if ( j == 0 && i != 0 ) {
 198                 na[j++] = LDAP_NO_ATTRS;
 199         }
 200         na[j] = NULL;
 201
 202         *mapped_attrs = na;
 203         return LDAP_SUCCESS;
 204 }
 205
 206 int
 207 map_attr_value(
 208                 dncookie                *dc,
 209                 AttributeDescription    *ad,
 210                 struct berval           *mapped_attr,
 211                 struct berval           *value,
 212                 struct berval           *mapped_value,
 213                 int                     remap )
 214 {
 215         struct berval           vtmp;
 216         int                     freeval = 0;
 217
 218         ldap_back_map( &dc->target->mt_rwmap.rwm_at, &ad->ad_cname, mapped_attr, remap );
 219         if ( BER_BVISNULL( mapped_attr ) || BER_BVISEMPTY( mapped_attr ) ) {
 220 #if 0
 221                 /*
 222                  * FIXME: are we sure we need to search oc_map if at_map fails?
 223                  */
 224                 ldap_back_map( &dc->target->mt_rwmap.rwm_oc, &ad->ad_cname, mapped_attr, remap );
 225                 if ( BER_BVISNULL( mapped_attr ) || BER_BVISEMPTY( mapped_attr ) ) {
 226                         *mapped_attr = ad->ad_cname;
 227                 }
 228 #endif
 229                 if ( dc->target->mt_rwmap.rwm_at.drop_missing ) {
 230                         return -1;
 231                 }
 232
 233                 *mapped_attr = ad->ad_cname;
 234         }
 235
 236         if ( value == NULL ) {
 237                 return 0;
 238         }
 239
 240         if ( ad->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName )
 241         {
 242                 dncookie fdc = *dc;
 243
 244 #ifdef ENABLE_REWRITE
 245                 fdc.ctx = "searchFilterAttrDN";
 246 #endif
 247
 248                 switch ( ldap_back_dn_massage( &fdc, value, &vtmp ) ) {
 249                 case LDAP_SUCCESS:
 250                         if ( vtmp.bv_val != value->bv_val ) {
 251                                 freeval = 1;
 252                         }
 253                         break;
 254
 255                 case LDAP_UNWILLING_TO_PERFORM:
 256                         return -1;
 257
 258                 case LDAP_OTHER:
 259                         return -1;
 260                 }
 261
 262         } else if ( ad->ad_type->sat_equality->smr_usage & SLAP_MR_MUTATION_NORMALIZER ) {
 263                 if ( ad->ad_type->sat_equality->smr_normalize(
 264                         (SLAP_MR_DENORMALIZE|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX),
 265                         NULL, NULL, value, &vtmp, NULL ) )
 266                 {
 267                         return -1;
 268                 }
 269                 freeval = 1;
 270
 271         } else if ( ad == slap_schema.si_ad_objectClass || ad == slap_schema.si_ad_structuralObjectClass ) {
 272                 ldap_back_map( &dc->target->mt_rwmap.rwm_oc, value, &vtmp, remap );
 273                 if ( BER_BVISNULL( &vtmp ) || BER_BVISEMPTY( &vtmp ) ) {
 274                         vtmp = *value;
 275                 }
 276
 277         } else {
 278                 vtmp = *value;
 279         }
 280
 281         filter_escape_value( &vtmp, mapped_value );
 282
 283         if ( freeval ) {
 284                 ber_memfree( vtmp.bv_val );
 285         }
 286
 287         return 0;
 288 }
 289
 290 static int
 291 ldap_back_int_filter_map_rewrite(
 292                 dncookie                *dc,
 293                 Filter                  *f,
 294                 struct berval           *fstr,
 295                 int                     remap )
 296 {
 297         int             i;
 298         Filter          *p;
 299         struct berval   atmp,
 300                         vtmp,
 301                         *tmp;
 302         static struct berval
 303                         /* better than nothing... */
 304                         ber_bvfalse = BER_BVC( "(!(objectClass=*))" ),
 305                         ber_bvtf_false = BER_BVC( "(|)" ),
 306                         /* better than nothing... */
 307                         ber_bvtrue = BER_BVC( "(objectClass=*)" ),
 308                         ber_bvtf_true = BER_BVC( "(&)" ),
 309 #if 0
 310                         /* no longer needed; preserved for completeness */
 311                         ber_bvundefined = BER_BVC( "(?=undefined)" ),
 312 #endif
 313                         ber_bverror = BER_BVC( "(?=error)" ),
 314                         ber_bvunknown = BER_BVC( "(?=unknown)" ),
 315                         ber_bvnone = BER_BVC( "(?=none)" );
 316         ber_len_t       len;
 317
 318         assert( fstr != NULL );
 319         BER_BVZERO( fstr );
 320
 321         if ( f == NULL ) {
 322                 ber_dupbv( fstr, &ber_bvnone );
 323                 return LDAP_OTHER;
 324         }
 325
 326         switch ( ( f->f_choice & SLAPD_FILTER_MASK ) ) {
 327         case LDAP_FILTER_EQUALITY:
 328                 if ( map_attr_value( dc, f->f_av_desc, &atmp,
 329                                         &f->f_av_value, &vtmp, remap ) )
 330                 {
 331                         goto computed;
 332                 }
 333
 334                 fstr->bv_len = atmp.bv_len + vtmp.bv_len
 335                         + ( sizeof("(=)") - 1 );
 336                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 337
 338                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=%s)",
 339                         atmp.bv_val, vtmp.bv_len ? vtmp.bv_val : "" );
 340
 341                 ber_memfree( vtmp.bv_val );
 342                 break;
 343
 344         case LDAP_FILTER_GE:
 345                 if ( map_attr_value( dc, f->f_av_desc, &atmp,
 346                                         &f->f_av_value, &vtmp, remap ) )
 347                 {
 348                         goto computed;
 349                 }
 350
 351                 fstr->bv_len = atmp.bv_len + vtmp.bv_len
 352                         + ( sizeof("(>=)") - 1 );
 353                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 354
 355                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s>=%s)",
 356                         atmp.bv_val, vtmp.bv_len ? vtmp.bv_val : "" );
 357
 358                 ber_memfree( vtmp.bv_val );
 359                 break;
 360
 361         case LDAP_FILTER_LE:
 362                 if ( map_attr_value( dc, f->f_av_desc, &atmp,
 363                                         &f->f_av_value, &vtmp, remap ) )
 364                 {
 365                         goto computed;
 366                 }
 367
 368                 fstr->bv_len = atmp.bv_len + vtmp.bv_len
 369                         + ( sizeof("(<=)") - 1 );
 370                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 371
 372                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s<=%s)",
 373                         atmp.bv_val, vtmp.bv_len ? vtmp.bv_val : "" );
 374
 375                 ber_memfree( vtmp.bv_val );
 376                 break;
 377
 378         case LDAP_FILTER_APPROX:
 379                 if ( map_attr_value( dc, f->f_av_desc, &atmp,
 380                                         &f->f_av_value, &vtmp, remap ) )
 381                 {
 382                         goto computed;
 383                 }
 384
 385                 fstr->bv_len = atmp.bv_len + vtmp.bv_len
 386                         + ( sizeof("(~=)") - 1 );
 387                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 388
 389                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s~=%s)",
 390                         atmp.bv_val, vtmp.bv_len ? vtmp.bv_val : "" );
 391
 392                 ber_memfree( vtmp.bv_val );
 393                 break;
 394
 395         case LDAP_FILTER_SUBSTRINGS:
 396                 if ( map_attr_value( dc, f->f_sub_desc, &atmp,
 397                                         NULL, NULL, remap ) )
 398                 {
 399                         goto computed;
 400                 }
 401
 402                 /* cannot be a DN ... */
 403
 404                 fstr->bv_len = atmp.bv_len + ( STRLENOF( "(=*)" ) );
 405                 fstr->bv_val = ch_malloc( fstr->bv_len + 128 ); /* FIXME: why 128 ? */
 406
 407                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
 408                         atmp.bv_val );
 409
 410                 if ( !BER_BVISNULL( &f->f_sub_initial ) ) {
 411                         len = fstr->bv_len;
 412
 413                         filter_escape_value( &f->f_sub_initial, &vtmp );
 414
 415                         fstr->bv_len += vtmp.bv_len;
 416                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 417
 418                         snprintf( &fstr->bv_val[len - 2], vtmp.bv_len + 3,
 419                                 /* "(attr=" */ "%s*)",
 420                                 vtmp.bv_len ? vtmp.bv_val : "" );
 421
 422                         ber_memfree( vtmp.bv_val );
 423                 }
 424
 425                 if ( f->f_sub_any != NULL ) {
 426                         for ( i = 0; !BER_BVISNULL( &f->f_sub_any[i] ); i++ ) {
 427                                 len = fstr->bv_len;
 428                                 filter_escape_value( &f->f_sub_any[i], &vtmp );
 429
 430                                 fstr->bv_len += vtmp.bv_len + 1;
 431                                 fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 432
 433                                 snprintf( &fstr->bv_val[len - 1], vtmp.bv_len + 3,
 434                                         /* "(attr=[init]*[any*]" */ "%s*)",
 435                                         vtmp.bv_len ? vtmp.bv_val : "" );
 436                                 ber_memfree( vtmp.bv_val );
 437                         }
 438                 }
 439
 440                 if ( !BER_BVISNULL( &f->f_sub_final ) ) {
 441                         len = fstr->bv_len;
 442
 443                         filter_escape_value( &f->f_sub_final, &vtmp );
 444
 445                         fstr->bv_len += vtmp.bv_len;
 446                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 447
 448                         snprintf( &fstr->bv_val[len - 1], vtmp.bv_len + 3,
 449                                 /* "(attr=[init*][any*]" */ "%s)",
 450                                 vtmp.bv_len ? vtmp.bv_val : "" );
 451
 452                         ber_memfree( vtmp.bv_val );
 453                 }
 454
 455                 break;
 456
 457         case LDAP_FILTER_PRESENT:
 458                 if ( map_attr_value( dc, f->f_desc, &atmp,
 459                                         NULL, NULL, remap ) )
 460                 {
 461                         goto computed;
 462                 }
 463
 464                 fstr->bv_len = atmp.bv_len + ( STRLENOF( "(=*)" ) );
 465                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 466
 467                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s=*)",
 468                         atmp.bv_val );
 469                 break;
 470
 471         case LDAP_FILTER_AND:
 472         case LDAP_FILTER_OR:
 473         case LDAP_FILTER_NOT:
 474                 fstr->bv_len = STRLENOF( "(%)" );
 475                 fstr->bv_val = ch_malloc( fstr->bv_len + 128 ); /* FIXME: why 128? */
 476
 477                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%c)",
 478                         f->f_choice == LDAP_FILTER_AND ? '&' :
 479                         f->f_choice == LDAP_FILTER_OR ? '|' : '!' );
 480
 481                 for ( p = f->f_list; p != NULL; p = p->f_next ) {
 482                         int     rc;
 483
 484                         len = fstr->bv_len;
 485
 486                         rc = ldap_back_int_filter_map_rewrite( dc, p, &vtmp, remap );
 487                         if ( rc != LDAP_SUCCESS ) {
 488                                 return rc;
 489                         }
 490
 491                         fstr->bv_len += vtmp.bv_len;
 492                         fstr->bv_val = ch_realloc( fstr->bv_val, fstr->bv_len + 1 );
 493
 494                         snprintf( &fstr->bv_val[len-1], vtmp.bv_len + 2,
 495                                 /*"("*/ "%s)", vtmp.bv_len ? vtmp.bv_val : "" );
 496
 497                         ch_free( vtmp.bv_val );
 498                 }
 499
 500                 break;
 501
 502         case LDAP_FILTER_EXT:
 503                 if ( f->f_mr_desc ) {
 504                         if ( map_attr_value( dc, f->f_mr_desc, &atmp,
 505                                                 &f->f_mr_value, &vtmp, remap ) )
 506                         {
 507                                 goto computed;
 508                         }
 509
 510                 } else {
 511                         BER_BVSTR( &atmp, "" );
 512                         filter_escape_value( &f->f_mr_value, &vtmp );
 513                 }
 514
 515                 /* FIXME: cleanup (less ?: operators...) */
 516                 fstr->bv_len = atmp.bv_len +
 517                         ( f->f_mr_dnattrs ? STRLENOF( ":dn" ) : 0 ) +
 518                         ( !BER_BVISEMPTY( &f->f_mr_rule_text ) ? f->f_mr_rule_text.bv_len + 1 : 0 ) +
 519                         vtmp.bv_len + ( STRLENOF( "(:=)" ) );
 520                 fstr->bv_val = ch_malloc( fstr->bv_len + 1 );
 521
 522                 snprintf( fstr->bv_val, fstr->bv_len + 1, "(%s%s%s%s:=%s)",
 523                         atmp.bv_val,
 524                         f->f_mr_dnattrs ? ":dn" : "",
 525                         !BER_BVISEMPTY( &f->f_mr_rule_text ) ? ":" : "",
 526                         !BER_BVISEMPTY( &f->f_mr_rule_text ) ? f->f_mr_rule_text.bv_val : "",
 527                         vtmp.bv_len ? vtmp.bv_val : "" );
 528                 ber_memfree( vtmp.bv_val );
 529                 break;
 530
 531         case SLAPD_FILTER_COMPUTED:
 532                 switch ( f->f_result ) {
 533                 /* FIXME: treat UNDEFINED as FALSE */
 534                 case SLAPD_COMPARE_UNDEFINED:
 535 computed:;
 536                         if ( META_BACK_TGT_NOUNDEFFILTER( dc->target ) ) {
 537                                 return LDAP_COMPARE_FALSE;
 538                         }
 539                         /* fallthru */
 540
 541                 case LDAP_COMPARE_FALSE:
 542                         if ( META_BACK_TGT_T_F( dc->target ) ) {
 543                                 tmp = &ber_bvtf_false;
 544                                 break;
 545                         }
 546                         tmp = &ber_bvfalse;
 547                         break;
 548
 549                 case LDAP_COMPARE_TRUE:
 550                         if ( META_BACK_TGT_T_F( dc->target ) ) {
 551                                 tmp = &ber_bvtf_true;
 552                                 break;
 553                         }
 554
 555                         tmp = &ber_bvtrue;
 556                         break;
 557
 558                 default:
 559                         tmp = &ber_bverror;
 560                         break;
 561                 }
 562
 563                 ber_dupbv( fstr, tmp );
 564                 break;
 565
 566         default:
 567                 ber_dupbv( fstr, &ber_bvunknown );
 568                 break;
 569         }
 570
 571         return 0;
 572 }
 573
 574 int
 575 ldap_back_filter_map_rewrite(
 576                 dncookie                *dc,
 577                 Filter                  *f,
 578                 struct berval           *fstr,
 579                 int                     remap )
 580 {
 581         int             rc;
 582         dncookie        fdc;
 583         struct berval   ftmp;
 584         static char     *dmy = "";
 585
 586         rc = ldap_back_int_filter_map_rewrite( dc, f, fstr, remap );
 587
 588 #ifdef ENABLE_REWRITE
 589         if ( rc != LDAP_SUCCESS ) {
 590                 return rc;
 591         }
 592
 593         fdc = *dc;
 594         ftmp = *fstr;
 595
 596         fdc.ctx = "searchFilter";
 597
 598         switch ( rewrite_session( fdc.target->mt_rwmap.rwm_rw, fdc.ctx,
 599                                 ( !BER_BVISEMPTY( &ftmp ) ? ftmp.bv_val : dmy ),
 600                                 fdc.conn, &fstr->bv_val ) )
 601         {
 602         case REWRITE_REGEXEC_OK:
 603                 if ( !BER_BVISNULL( fstr ) ) {
 604                         fstr->bv_len = strlen( fstr->bv_val );
 605
 606                 } else {
 607                         *fstr = ftmp;
 608                 }
 609                 Debug( LDAP_DEBUG_ARGS,
 610                         "[rw] %s: \"%s\" -> \"%s\"\n",
 611                         fdc.ctx, BER_BVISNULL( &ftmp ) ? "" : ftmp.bv_val,
 612                         BER_BVISNULL( fstr ) ? "" : fstr->bv_val );
 613                 rc = LDAP_SUCCESS;
 614                 break;
 615
 616         case REWRITE_REGEXEC_UNWILLING:
 617                 if ( fdc.rs ) {
 618                         fdc.rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
 619                         fdc.rs->sr_text = "Operation not allowed";
 620                 }
 621                 rc = LDAP_UNWILLING_TO_PERFORM;
 622                 break;
 623
 624         case REWRITE_REGEXEC_ERR:
 625                 if ( fdc.rs ) {
 626                         fdc.rs->sr_err = LDAP_OTHER;
 627                         fdc.rs->sr_text = "Rewrite error";
 628                 }
 629                 rc = LDAP_OTHER;
 630                 break;
 631         }
 632
 633         if ( fstr->bv_val == dmy ) {
 634                 BER_BVZERO( fstr );
 635         }
 636 #endif /* ENABLE_REWRITE */
 637
 638         return rc;
 639 }
 640
 641 int
 642 ldap_back_referral_result_rewrite(
 643         dncookie                *dc,
 644         BerVarray               a_vals
 645 )
 646 {
 647         int             i, last;
 648
 649         assert( dc != NULL );
 650         assert( a_vals != NULL );
 651
 652         for ( last = 0; !BER_BVISNULL( &a_vals[ last ] ); last++ )
 653                 ;
 654         last--;
 655
 656         for ( i = 0; !BER_BVISNULL( &a_vals[ i ] ); i++ ) {
 657                 struct berval   dn,
 658                                 olddn = BER_BVNULL;
 659                 int             rc;
 660                 LDAPURLDesc     *ludp;
 661
 662                 rc = ldap_url_parse( a_vals[ i ].bv_val, &ludp );
 663                 if ( rc != LDAP_URL_SUCCESS ) {
 664                         /* leave attr untouched if massage failed */
 665                         continue;
 666                 }
 667
 668                 /* FIXME: URLs like "ldap:///dc=suffix" if passed
 669                  * thru ldap_url_parse() and ldap_url_desc2str()
 670                  * get rewritten as "ldap:///dc=suffix??base";
 671                  * we don't want this to occur... */
 672                 if ( ludp->lud_scope == LDAP_SCOPE_BASE ) {
 673                         ludp->lud_scope = LDAP_SCOPE_DEFAULT;
 674                 }
 675
 676                 ber_str2bv( ludp->lud_dn, 0, 0, &olddn );
 677
 678                 rc = ldap_back_dn_massage( dc, &olddn, &dn );
 679                 switch ( rc ) {
 680                 case LDAP_UNWILLING_TO_PERFORM:
 681                         /*
 682                          * FIXME: need to check if it may be considered
 683                          * legal to trim values when adding/modifying;
 684                          * it should be when searching (e.g. ACLs).
 685                          */
 686                         LBER_FREE( a_vals[ i ].bv_val );
 687                         if ( last > i ) {
 688                                 a_vals[ i ] = a_vals[ last ];
 689                         }
 690                         BER_BVZERO( &a_vals[ last ] );
 691                         last--;
 692                         i--;
 693                         break;
 694
 695                 default:
 696                         /* leave attr untouched if massage failed */
 697                         if ( !BER_BVISNULL( &dn ) && olddn.bv_val != dn.bv_val )
 698                         {
 699                                 char    *newurl;
 700
 701                                 ludp->lud_dn = dn.bv_val;
 702                                 newurl = ldap_url_desc2str( ludp );
 703                                 free( dn.bv_val );
 704                                 if ( newurl == NULL ) {
 705                                         /* FIXME: leave attr untouched
 706                                          * even if ldap_url_desc2str failed...
 707                                          */
 708                                         break;
 709                                 }
 710
 711                                 LBER_FREE( a_vals[ i ].bv_val );
 712                                 ber_str2bv( newurl, 0, 1, &a_vals[ i ] );
 713                                 LDAP_FREE( newurl );
 714                                 ludp->lud_dn = olddn.bv_val;
 715                         }
 716                         break;
 717                 }
 718
 719                 ldap_free_urldesc( ludp );
 720         }
 721
 722         return 0;
 723 }
 724
 725 /*
 726  * I don't like this much, but we need two different
 727  * functions because different heap managers may be
 728  * in use in back-ldap/meta to reduce the amount of
 729  * calls to malloc routines, and some of the free()
 730  * routines may be macros with args
 731  */
 732 int
 733 ldap_dnattr_rewrite(
 734         dncookie                *dc,
 735         BerVarray               a_vals
 736 )
 737 {
 738         struct berval   bv;
 739         int             i, last;
 740
 741         assert( a_vals != NULL );
 742
 743         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ )
 744                 ;
 745         last--;
 746
 747         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
 748                 switch ( ldap_back_dn_massage( dc, &a_vals[i], &bv ) ) {
 749                 case LDAP_UNWILLING_TO_PERFORM:
 750                         /*
 751                          * FIXME: need to check if it may be considered
 752                          * legal to trim values when adding/modifying;
 753                          * it should be when searching (e.g. ACLs).
 754                          */
 755                         ch_free( a_vals[i].bv_val );
 756                         if ( last > i ) {
 757                                 a_vals[i] = a_vals[last];
 758                         }
 759                         BER_BVZERO( &a_vals[last] );
 760                         last--;
 761                         break;
 762
 763                 default:
 764                         /* leave attr untouched if massage failed */
 765                         if ( !BER_BVISNULL( &bv ) && bv.bv_val != a_vals[i].bv_val ) {
 766                                 ch_free( a_vals[i].bv_val );
 767                                 a_vals[i] = bv;
 768                         }
 769                         break;
 770                 }
 771         }
 772
 773         return 0;
 774 }
 775
 776 int
 777 ldap_dnattr_result_rewrite(
 778         dncookie                *dc,
 779         BerVarray               a_vals
 780 )
 781 {
 782         struct berval   bv;
 783         int             i, last;
 784
 785         assert( a_vals != NULL );
 786
 787         for ( last = 0; !BER_BVISNULL( &a_vals[last] ); last++ )
 788                 ;
 789         last--;
 790
 791         for ( i = 0; !BER_BVISNULL( &a_vals[i] ); i++ ) {
 792                 switch ( ldap_back_dn_massage( dc, &a_vals[i], &bv ) ) {
 793                 case LDAP_UNWILLING_TO_PERFORM:
 794                         /*
 795                          * FIXME: need to check if it may be considered
 796                          * legal to trim values when adding/modifying;
 797                          * it should be when searching (e.g. ACLs).
 798                          */
 799                         LBER_FREE( a_vals[i].bv_val );
 800                         if ( last > i ) {
 801                                 a_vals[i] = a_vals[last];
 802                         }
 803                         BER_BVZERO( &a_vals[last] );
 804                         last--;
 805                         break;
 806
 807                 default:
 808                         /* leave attr untouched if massage failed */
 809                         if ( !BER_BVISNULL( &bv ) && a_vals[i].bv_val != bv.bv_val ) {
 810                                 LBER_FREE( a_vals[i].bv_val );
 811                                 a_vals[i] = bv;
 812                         }
 813                         break;
 814                 }
 815         }
 816
 817         return 0;
 818 }
 819