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

   1 /* dn.c - routines for dealing with distinguished names */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2005 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 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  17  * All rights reserved.
  18  *
  19  * Redistribution and use in source and binary forms are permitted
  20  * provided that this notice is preserved and that due credit is given
  21  * to the University of Michigan at Ann Arbor. The name of the University
  22  * may not be used to endorse or promote products derived from this
  23  * software without specific prior written permission. This software
  24  * is provided ``as is'' without express or implied warranty.
  25  */
  26
  27 #include "portable.h"
  28
  29 #include <stdio.h>
  30
  31 #include <ac/ctype.h>
  32 #include <ac/socket.h>
  33 #include <ac/string.h>
  34 #include <ac/time.h>
  35
  36 #include "slap.h"
  37 #include "lutil.h"
  38
  39 /*
  40  * The DN syntax-related functions take advantage of the dn representation
  41  * handling functions ldap_str2dn/ldap_dn2str.  The latter are not schema-
  42  * aware, so the attributes and their values need be validated (and possibly
  43  * normalized).  In the current implementation the required validation/nor-
  44  * malization/"pretty"ing are done on newly created DN structural represen-
  45  * tations; however the idea is to move towards DN handling in structural
  46  * representation instead of the current string representation.  To this
  47  * purpose, we need to do only the required operations and keep track of
  48  * what has been done to minimize their impact on performances.
  49  *
  50  * Developers are strongly encouraged to use this feature, to speed-up
  51  * its stabilization.
  52  */
  53
  54 #define AVA_PRIVATE( ava ) ( ( AttributeDescription * )(ava)->la_private )
  55
  56 static int
  57 LDAPRDN_validate( LDAPRDN rdn )
  58 {
  59         int             iAVA;
  60         int             rc;
  61
  62         assert( rdn );
  63
  64         for ( iAVA = 0; rdn[ iAVA ]; iAVA++ ) {
  65                 LDAPAVA                 *ava = rdn[ iAVA ];
  66                 AttributeDescription    *ad;
  67                 slap_syntax_validate_func *validate = NULL;
  68
  69                 assert( ava );
  70
  71                 if ( ( ad = AVA_PRIVATE( ava ) ) == NULL ) {
  72                         const char      *text = NULL;
  73
  74                         rc = slap_bv2ad( &ava->la_attr, &ad, &text );
  75                         if ( rc != LDAP_SUCCESS ) {
  76                                 return LDAP_INVALID_SYNTAX;
  77                         }
  78
  79                         ava->la_private = ( void * )ad;
  80                 }
  81
  82                 /*
  83                  * Replace attr oid/name with the canonical name
  84                  */
  85                 ava->la_attr = ad->ad_cname;
  86
  87                 validate = ad->ad_type->sat_syntax->ssyn_validate;
  88
  89                 if ( validate ) {
  90                         /*
  91                          * validate value by validate function
  92                          */
  93                         rc = ( *validate )( ad->ad_type->sat_syntax,
  94                                 &ava->la_value );
  95
  96                         if ( rc != LDAP_SUCCESS ) {
  97                                 return LDAP_INVALID_SYNTAX;
  98                         }
  99                 }
 100         }
 101
 102         return LDAP_SUCCESS;
 103 }
 104
 105 /*
 106  * In-place, schema-aware validation of the
 107  * structural representation of a distinguished name.
 108  */
 109 static int
 110 LDAPDN_validate( LDAPDN dn )
 111 {
 112         int             iRDN;
 113         int             rc;
 114
 115         assert( dn );
 116
 117         for ( iRDN = 0; dn[ iRDN ]; iRDN++ ) {
 118                 LDAPRDN         rdn = dn[ iRDN ];
 119                 int             iAVA;
 120
 121                 assert( rdn );
 122
 123                 for ( iAVA = 0; rdn[ iAVA ]; iAVA++ ) {
 124                         LDAPAVA                 *ava = rdn[ iAVA ];
 125                         AttributeDescription    *ad;
 126                         slap_syntax_validate_func *validate = NULL;
 127
 128                         assert( ava );
 129
 130                         if ( ( ad = AVA_PRIVATE( ava ) ) == NULL ) {
 131                                 const char      *text = NULL;
 132
 133                                 rc = slap_bv2ad( &ava->la_attr, &ad, &text );
 134                                 if ( rc != LDAP_SUCCESS ) {
 135                                         return LDAP_INVALID_SYNTAX;
 136                                 }
 137
 138                                 ava->la_private = ( void * )ad;
 139                         }
 140
 141                         /*
 142                          * Replace attr oid/name with the canonical name
 143                          */
 144                         ava->la_attr = ad->ad_cname;
 145
 146                         validate = ad->ad_type->sat_syntax->ssyn_validate;
 147
 148                         if ( validate ) {
 149                                 /*
 150                                  * validate value by validate function
 151                                  */
 152                                 rc = ( *validate )( ad->ad_type->sat_syntax,
 153                                         &ava->la_value );
 154
 155                                 if ( rc != LDAP_SUCCESS ) {
 156                                         return LDAP_INVALID_SYNTAX;
 157                                 }
 158                         }
 159                 }
 160         }
 161
 162         return LDAP_SUCCESS;
 163 }
 164
 165 /*
 166  * dn validate routine
 167  */
 168 int
 169 dnValidate(
 170         Syntax *syntax,
 171         struct berval *in )
 172 {
 173         int             rc;
 174         LDAPDN          dn = NULL;
 175
 176         assert( in );
 177
 178         if ( in->bv_len == 0 ) {
 179                 return LDAP_SUCCESS;
 180
 181         } else if ( in->bv_len > SLAP_LDAPDN_MAXLEN ) {
 182                 return LDAP_INVALID_SYNTAX;
 183         }
 184
 185         rc = ldap_bv2dn( in, &dn, LDAP_DN_FORMAT_LDAP );
 186         if ( rc != LDAP_SUCCESS ) {
 187                 return LDAP_INVALID_SYNTAX;
 188         }
 189
 190         assert( strlen( in->bv_val ) == in->bv_len );
 191
 192         /*
 193          * Schema-aware validate
 194          */
 195         rc = LDAPDN_validate( dn );
 196         ldap_dnfree( dn );
 197
 198         if ( rc != LDAP_SUCCESS ) {
 199                 return LDAP_INVALID_SYNTAX;
 200         }
 201
 202         return LDAP_SUCCESS;
 203 }
 204
 205 int
 206 rdnValidate(
 207         Syntax *syntax,
 208         struct berval *in )
 209 {
 210         int             rc;
 211         LDAPRDN         rdn;
 212         char*           p;
 213
 214         assert( in );
 215         if ( in->bv_len == 0 ) {
 216                 return LDAP_SUCCESS;
 217
 218         } else if ( in->bv_len > SLAP_LDAPDN_MAXLEN ) {
 219                 return LDAP_INVALID_SYNTAX;
 220         }
 221
 222         rc = ldap_bv2rdn_x( in , &rdn, (char **) &p,
 223                                 LDAP_DN_FORMAT_LDAP, NULL);
 224         if ( rc != LDAP_SUCCESS ) {
 225                 return LDAP_INVALID_SYNTAX;
 226         }
 227
 228         assert( strlen( in->bv_val ) == in->bv_len );
 229
 230         /*
 231          * Schema-aware validate
 232          */
 233         rc = LDAPRDN_validate( rdn );
 234         ldap_rdnfree( rdn );
 235
 236         if ( rc != LDAP_SUCCESS ) {
 237                 return LDAP_INVALID_SYNTAX;
 238         }
 239
 240         return LDAP_SUCCESS;
 241 }
 242
 243
 244 /*
 245  * AVA sorting inside a RDN
 246  *
 247  * rule: sort attributeTypes in alphabetical order; in case of multiple
 248  * occurrences of the same attributeType, sort values in byte order
 249  * (use memcmp, which implies alphabetical order in case of IA5 value;
 250  * this should guarantee the repeatability of the operation).
 251  *
 252  * Note: the sorting can be slightly improved by sorting first
 253  * by attribute type length, then by alphabetical order.
 254  *
 255  * uses a linear search; should be fine since the number of AVAs in
 256  * a RDN should be limited.
 257  */
 258 static void
 259 AVA_Sort( LDAPRDN rdn, int iAVA )
 260 {
 261         int             i;
 262         LDAPAVA         *ava_in = rdn[ iAVA ];
 263
 264         assert( rdn );
 265         assert( ava_in );
 266
 267         for ( i = 0; i < iAVA; i++ ) {
 268                 LDAPAVA         *ava = rdn[ i ];
 269                 int             a, j;
 270
 271                 assert( ava );
 272
 273                 a = strcmp( ava_in->la_attr.bv_val, ava->la_attr.bv_val );
 274
 275                 if ( a > 0 ) {
 276                         break;
 277                 }
 278
 279                 while ( a == 0 ) {
 280                         int             v, d;
 281
 282                         d = ava_in->la_value.bv_len - ava->la_value.bv_len;
 283
 284                         v = memcmp( ava_in->la_value.bv_val,
 285                                         ava->la_value.bv_val,
 286                                         d <= 0 ? ava_in->la_value.bv_len
 287                                                 : ava->la_value.bv_len );
 288
 289                         if ( v == 0 && d != 0 ) {
 290                                 v = d;
 291                         }
 292
 293                         if ( v <= 0 ) {
 294                                 /*
 295                                  * got it!
 296                                  */
 297                                 break;
 298                         }
 299
 300                         if ( ++i == iAVA ) {
 301                                 /*
 302                                  * already sorted
 303                                  */
 304                                 return;
 305                         }
 306
 307                         ava = rdn[ i ];
 308                         a = strcmp( ava_in->la_attr.bv_val,
 309                                         ava->la_attr.bv_val );
 310                 }
 311
 312                 /*
 313                  * move ahead
 314                  */
 315                 for ( j = iAVA; j > i; j-- ) {
 316                         rdn[ j ] = rdn[ j - 1 ];
 317                 }
 318                 rdn[ i ] = ava_in;
 319
 320                 return;
 321         }
 322 }
 323
 324 static int
 325 LDAPRDN_rewrite( LDAPRDN rdn, unsigned flags, void *ctx )
 326 {
 327
 328         int rc;
 329         int             iAVA;
 330         for ( iAVA = 0; rdn[ iAVA ]; iAVA++ ) {
 331                 LDAPAVA                 *ava = rdn[ iAVA ];
 332                 AttributeDescription    *ad;
 333                 slap_syntax_validate_func *validf = NULL;
 334                 slap_mr_normalize_func *normf = NULL;
 335                 slap_syntax_transform_func *transf = NULL;
 336                 MatchingRule *mr = NULL;
 337                 struct berval           bv = BER_BVNULL;
 338                 int                     do_sort = 0;
 339
 340                 assert( ava );
 341
 342                 if ( ( ad = AVA_PRIVATE( ava ) ) == NULL ) {
 343                         const char      *text = NULL;
 344
 345                         rc = slap_bv2ad( &ava->la_attr, &ad, &text );
 346                         if ( rc != LDAP_SUCCESS ) {
 347                                 return LDAP_INVALID_SYNTAX;
 348                         }
 349
 350                         ava->la_private = ( void * )ad;
 351                         do_sort = 1;
 352                 }
 353
 354                 /*
 355                  * Replace attr oid/name with the canonical name
 356                  */
 357                 ava->la_attr = ad->ad_cname;
 358
 359                 if( ava->la_flags & LDAP_AVA_BINARY ) {
 360                         if( ava->la_value.bv_len == 0 ) {
 361                                 /* BER encoding is empty */
 362                                 return LDAP_INVALID_SYNTAX;
 363                         }
 364
 365                         /* AVA is binary encoded, don't muck with it */
 366                 } else if( flags & SLAP_LDAPDN_PRETTY ) {
 367                         transf = ad->ad_type->sat_syntax->ssyn_pretty;
 368                         if( !transf ) {
 369                                 validf = ad->ad_type->sat_syntax->ssyn_validate;
 370                         }
 371                 } else { /* normalization */
 372                         validf = ad->ad_type->sat_syntax->ssyn_validate;
 373                         mr = ad->ad_type->sat_equality;
 374                         if( mr ) normf = mr->smr_normalize;
 375                 }
 376
 377                 if ( validf ) {
 378                         /* validate value before normalization */
 379                         rc = ( *validf )( ad->ad_type->sat_syntax,
 380                                 ava->la_value.bv_len
 381                                         ? &ava->la_value
 382                                         : (struct berval *) &slap_empty_bv );
 383
 384                         if ( rc != LDAP_SUCCESS ) {
 385                                 return LDAP_INVALID_SYNTAX;
 386                         }
 387                 }
 388
 389                 if ( transf ) {
 390                         /*
 391                          * transform value by pretty function
 392                          *      if value is empty, use empty_bv
 393                          */
 394                         rc = ( *transf )( ad->ad_type->sat_syntax,
 395                                 ava->la_value.bv_len
 396                                         ? &ava->la_value
 397                                         : (struct berval *) &slap_empty_bv,
 398                                 &bv, ctx );
 399
 400                         if ( rc != LDAP_SUCCESS ) {
 401                                 return LDAP_INVALID_SYNTAX;
 402                         }
 403                 }
 404
 405                 if ( normf ) {
 406                         /*
 407                          * normalize value
 408                          *      if value is empty, use empty_bv
 409                          */
 410                         rc = ( *normf )(
 411                                 SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
 412                                 ad->ad_type->sat_syntax,
 413                                 mr,
 414                                 ava->la_value.bv_len
 415                                         ? &ava->la_value
 416                                         : (struct berval *) &slap_empty_bv,
 417                                 &bv, ctx );
 418
 419                         if ( rc != LDAP_SUCCESS ) {
 420                                 return LDAP_INVALID_SYNTAX;
 421                         }
 422                 }
 423
 424
 425                 if( bv.bv_val ) {
 426                         if ( ava->la_flags & LDAP_AVA_FREE_VALUE )
 427                                 ber_memfree_x( ava->la_value.bv_val, ctx );
 428                         ava->la_value = bv;
 429                         ava->la_flags |= LDAP_AVA_FREE_VALUE;
 430                 }
 431
 432                 if( do_sort ) AVA_Sort( rdn, iAVA );
 433         }
 434         return LDAP_SUCCESS;
 435 }
 436
 437 /*
 438  * In-place, schema-aware normalization / "pretty"ing of the
 439  * structural representation of a distinguished name.
 440  */
 441 static int
 442 LDAPDN_rewrite( LDAPDN dn, unsigned flags, void *ctx )
 443 {
 444         int             iRDN;
 445         int             rc;
 446
 447         assert( dn );
 448
 449         for ( iRDN = 0; dn[ iRDN ]; iRDN++ ) {
 450                 LDAPRDN         rdn = dn[ iRDN ];
 451                 int             iAVA;
 452
 453                 assert( rdn );
 454
 455                 for ( iAVA = 0; rdn[ iAVA ]; iAVA++ ) {
 456                         LDAPAVA                 *ava = rdn[ iAVA ];
 457                         AttributeDescription    *ad;
 458                         slap_syntax_validate_func *validf = NULL;
 459                         slap_mr_normalize_func *normf = NULL;
 460                         slap_syntax_transform_func *transf = NULL;
 461                         MatchingRule *mr = NULL;
 462                         struct berval           bv = BER_BVNULL;
 463                         int                     do_sort = 0;
 464
 465                         assert( ava );
 466
 467                         if ( ( ad = AVA_PRIVATE( ava ) ) == NULL ) {
 468                                 const char      *text = NULL;
 469
 470                                 rc = slap_bv2ad( &ava->la_attr, &ad, &text );
 471                                 if ( rc != LDAP_SUCCESS ) {
 472                                         return LDAP_INVALID_SYNTAX;
 473                                 }
 474
 475                                 ava->la_private = ( void * )ad;
 476                                 do_sort = 1;
 477                         }
 478
 479                         /*
 480                          * Replace attr oid/name with the canonical name
 481                          */
 482                         ava->la_attr = ad->ad_cname;
 483
 484                         if( ava->la_flags & LDAP_AVA_BINARY ) {
 485                                 if( ava->la_value.bv_len == 0 ) {
 486                                         /* BER encoding is empty */
 487                                         return LDAP_INVALID_SYNTAX;
 488                                 }
 489
 490                                 /* AVA is binary encoded, don't muck with it */
 491                         } else if( flags & SLAP_LDAPDN_PRETTY ) {
 492                                 transf = ad->ad_type->sat_syntax->ssyn_pretty;
 493                                 if( !transf ) {
 494                                         validf = ad->ad_type->sat_syntax->ssyn_validate;
 495                                 }
 496                         } else { /* normalization */
 497                                 validf = ad->ad_type->sat_syntax->ssyn_validate;
 498                                 mr = ad->ad_type->sat_equality;
 499                                 if( mr ) normf = mr->smr_normalize;
 500                         }
 501
 502                         if ( validf ) {
 503                                 /* validate value before normalization */
 504                                 rc = ( *validf )( ad->ad_type->sat_syntax,
 505                                         ava->la_value.bv_len
 506                                                 ? &ava->la_value
 507                                                 : (struct berval *) &slap_empty_bv );
 508
 509                                 if ( rc != LDAP_SUCCESS ) {
 510                                         return LDAP_INVALID_SYNTAX;
 511                                 }
 512                         }
 513
 514                         if ( transf ) {
 515                                 /*
 516                                  * transform value by pretty function
 517                                  *      if value is empty, use empty_bv
 518                                  */
 519                                 rc = ( *transf )( ad->ad_type->sat_syntax,
 520                                         ava->la_value.bv_len
 521                                                 ? &ava->la_value
 522                                                 : (struct berval *) &slap_empty_bv,
 523                                         &bv, ctx );
 524
 525                                 if ( rc != LDAP_SUCCESS ) {
 526                                         return LDAP_INVALID_SYNTAX;
 527                                 }
 528                         }
 529
 530                         if ( normf ) {
 531                                 /*
 532                                  * normalize value
 533                                  *      if value is empty, use empty_bv
 534                                  */
 535                                 rc = ( *normf )(
 536                                         SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
 537                                         ad->ad_type->sat_syntax,
 538                                         mr,
 539                                         ava->la_value.bv_len
 540                                                 ? &ava->la_value
 541                                                 : (struct berval *) &slap_empty_bv,
 542                                         &bv, ctx );
 543
 544                                 if ( rc != LDAP_SUCCESS ) {
 545                                         return LDAP_INVALID_SYNTAX;
 546                                 }
 547                         }
 548
 549
 550                         if( bv.bv_val ) {
 551                                 if ( ava->la_flags & LDAP_AVA_FREE_VALUE )
 552                                         ber_memfree_x( ava->la_value.bv_val, ctx );
 553                                 ava->la_value = bv;
 554                                 ava->la_flags |= LDAP_AVA_FREE_VALUE;
 555                         }
 556
 557                         if( do_sort ) AVA_Sort( rdn, iAVA );
 558                 }
 559         }
 560
 561         return LDAP_SUCCESS;
 562 }
 563
 564 int
 565 dnNormalize(
 566     slap_mask_t use,
 567     Syntax *syntax,
 568     MatchingRule *mr,
 569     struct berval *val,
 570     struct berval *out,
 571     void *ctx)
 572 {
 573         assert( val );
 574         assert( out );
 575
 576         Debug( LDAP_DEBUG_TRACE, ">>> dnNormalize: <%s>\n", val->bv_val, 0, 0 );
 577
 578         if ( val->bv_len != 0 ) {
 579                 LDAPDN          dn = NULL;
 580                 int             rc;
 581
 582                 /*
 583                  * Go to structural representation
 584                  */
 585                 rc = ldap_bv2dn_x( val, &dn, LDAP_DN_FORMAT_LDAP, ctx );
 586                 if ( rc != LDAP_SUCCESS ) {
 587                         return LDAP_INVALID_SYNTAX;
 588                 }
 589
 590                 assert( strlen( val->bv_val ) == val->bv_len );
 591
 592                 /*
 593                  * Schema-aware rewrite
 594                  */
 595                 if ( LDAPDN_rewrite( dn, 0, ctx ) != LDAP_SUCCESS ) {
 596                         ldap_dnfree_x( dn, ctx );
 597                         return LDAP_INVALID_SYNTAX;
 598                 }
 599
 600                 /*
 601                  * Back to string representation
 602                  */
 603                 rc = ldap_dn2bv_x( dn, out,
 604                         LDAP_DN_FORMAT_LDAPV3 | LDAP_DN_PRETTY, ctx );
 605
 606                 ldap_dnfree_x( dn, ctx );
 607
 608                 if ( rc != LDAP_SUCCESS ) {
 609                         return LDAP_INVALID_SYNTAX;
 610                 }
 611         } else {
 612                 ber_dupbv_x( out, val, ctx );
 613         }
 614
 615         Debug( LDAP_DEBUG_TRACE, "<<< dnNormalize: <%s>\n", out->bv_val, 0, 0 );
 616
 617         return LDAP_SUCCESS;
 618 }
 619
 620 int
 621 rdnNormalize(
 622     slap_mask_t use,
 623     Syntax *syntax,
 624     MatchingRule *mr,
 625     struct berval *val,
 626     struct berval *out,
 627     void *ctx)
 628 {
 629         assert( val );
 630         assert( out );
 631
 632         Debug( LDAP_DEBUG_TRACE, ">>> dnNormalize: <%s>\n", val->bv_val, 0, 0 );
 633         if ( val->bv_len != 0 ) {
 634                 LDAPRDN         rdn = NULL;
 635                 int             rc;
 636                 char*           p;
 637
 638                 /*
 639                  * Go to structural representation
 640                  */
 641                 rc = ldap_bv2rdn_x( val , &rdn, (char **) &p,
 642                                         LDAP_DN_FORMAT_LDAP, ctx);
 643
 644                 if ( rc != LDAP_SUCCESS ) {
 645                         return LDAP_INVALID_SYNTAX;
 646                 }
 647
 648                 assert( strlen( val->bv_val ) == val->bv_len );
 649
 650                 /*
 651                  * Schema-aware rewrite
 652                  */
 653                 if ( LDAPRDN_rewrite( rdn, 0, ctx ) != LDAP_SUCCESS ) {
 654                         ldap_rdnfree_x( rdn, ctx );
 655                         return LDAP_INVALID_SYNTAX;
 656                 }
 657
 658                 /*
 659                  * Back to string representation
 660                  */
 661                 rc = ldap_rdn2bv_x( rdn, out,
 662                         LDAP_DN_FORMAT_LDAPV3 | LDAP_DN_PRETTY, ctx );
 663
 664                 ldap_rdnfree_x( rdn, ctx );
 665
 666                 if ( rc != LDAP_SUCCESS ) {
 667                         return LDAP_INVALID_SYNTAX;
 668                 }
 669         } else {
 670                 ber_dupbv_x( out, val, ctx );
 671         }
 672
 673         Debug( LDAP_DEBUG_TRACE, "<<< dnNormalize: <%s>\n", out->bv_val, 0, 0 );
 674
 675         return LDAP_SUCCESS;
 676 }
 677
 678 int
 679 dnPretty(
 680         Syntax *syntax,
 681         struct berval *val,
 682         struct berval *out,
 683         void *ctx)
 684 {
 685         assert( val );
 686         assert( out );
 687
 688         Debug( LDAP_DEBUG_TRACE, ">>> dnPretty: <%s>\n", val->bv_val, 0, 0 );
 689
 690         if ( val->bv_len == 0 ) {
 691                 ber_dupbv_x( out, val, ctx );
 692
 693         } else if ( val->bv_len > SLAP_LDAPDN_MAXLEN ) {
 694                 return LDAP_INVALID_SYNTAX;
 695
 696         } else {
 697                 LDAPDN          dn = NULL;
 698                 int             rc;
 699
 700                 /* FIXME: should be liberal in what we accept */
 701                 rc = ldap_bv2dn_x( val, &dn, LDAP_DN_FORMAT_LDAP, ctx );
 702                 if ( rc != LDAP_SUCCESS ) {
 703                         return LDAP_INVALID_SYNTAX;
 704                 }
 705
 706                 assert( strlen( val->bv_val ) == val->bv_len );
 707
 708                 /*
 709                  * Schema-aware rewrite
 710                  */
 711                 if ( LDAPDN_rewrite( dn, SLAP_LDAPDN_PRETTY, ctx ) != LDAP_SUCCESS ) {
 712                         ldap_dnfree_x( dn, ctx );
 713                         return LDAP_INVALID_SYNTAX;
 714                 }
 715
 716                 /* FIXME: not sure why the default isn't pretty */
 717                 /* RE: the default is the form that is used as
 718                  * an internal representation; the pretty form
 719                  * is a variant */
 720                 rc = ldap_dn2bv_x( dn, out,
 721                         LDAP_DN_FORMAT_LDAPV3 | LDAP_DN_PRETTY, ctx );
 722
 723                 ldap_dnfree_x( dn, ctx );
 724
 725                 if ( rc != LDAP_SUCCESS ) {
 726                         return LDAP_INVALID_SYNTAX;
 727                 }
 728         }
 729
 730         Debug( LDAP_DEBUG_TRACE, "<<< dnPretty: <%s>\n", out->bv_val, 0, 0 );
 731
 732         return LDAP_SUCCESS;
 733 }
 734
 735 int
 736 rdnPretty(
 737         Syntax *syntax,
 738         struct berval *val,
 739         struct berval *out,
 740         void *ctx)
 741 {
 742         assert( val );
 743         assert( out );
 744
 745         Debug( LDAP_DEBUG_TRACE, ">>> dnPretty: <%s>\n", val->bv_val, 0, 0 );
 746
 747         if ( val->bv_len == 0 ) {
 748                 ber_dupbv_x( out, val, ctx );
 749
 750         } else if ( val->bv_len > SLAP_LDAPDN_MAXLEN ) {
 751                 return LDAP_INVALID_SYNTAX;
 752
 753         } else {
 754                 LDAPRDN         rdn = NULL;
 755                 int             rc;
 756                 char*           p;
 757
 758                 /* FIXME: should be liberal in what we accept */
 759                 rc = ldap_bv2rdn_x( val , &rdn, (char **) &p,
 760                                         LDAP_DN_FORMAT_LDAP, ctx);
 761                 if ( rc != LDAP_SUCCESS ) {
 762                         return LDAP_INVALID_SYNTAX;
 763                 }
 764
 765                 assert( strlen( val->bv_val ) == val->bv_len );
 766
 767                 /*
 768                  * Schema-aware rewrite
 769                  */
 770                 if ( LDAPRDN_rewrite( rdn, SLAP_LDAPDN_PRETTY, ctx ) != LDAP_SUCCESS ) {
 771                         ldap_rdnfree_x( rdn, ctx );
 772                         return LDAP_INVALID_SYNTAX;
 773                 }
 774
 775                 /* FIXME: not sure why the default isn't pretty */
 776                 /* RE: the default is the form that is used as
 777                  * an internal representation; the pretty form
 778                  * is a variant */
 779                 rc = ldap_rdn2bv_x( rdn, out,
 780                         LDAP_DN_FORMAT_LDAPV3 | LDAP_DN_PRETTY, ctx );
 781
 782                 ldap_rdnfree_x( rdn, ctx );
 783
 784                 if ( rc != LDAP_SUCCESS ) {
 785                         return LDAP_INVALID_SYNTAX;
 786                 }
 787         }
 788
 789         Debug( LDAP_DEBUG_TRACE, "<<< dnPretty: <%s>\n", out->bv_val, 0, 0 );
 790
 791         return LDAP_SUCCESS;
 792 }
 793
 794
 795 int
 796 dnPrettyNormalDN(
 797         Syntax *syntax,
 798         struct berval *val,
 799         LDAPDN *dn,
 800         int flags,
 801         void *ctx )
 802 {
 803         assert( val );
 804         assert( dn );
 805
 806         Debug( LDAP_DEBUG_TRACE, ">>> dn%sDN: <%s>\n",
 807                         flags == SLAP_LDAPDN_PRETTY ? "Pretty" : "Normal",
 808                         val->bv_val, 0 );
 809
 810         if ( val->bv_len == 0 ) {
 811                 return LDAP_SUCCESS;
 812
 813         } else if ( val->bv_len > SLAP_LDAPDN_MAXLEN ) {
 814                 return LDAP_INVALID_SYNTAX;
 815
 816         } else {
 817                 int             rc;
 818
 819                 /* FIXME: should be liberal in what we accept */
 820                 rc = ldap_bv2dn_x( val, dn, LDAP_DN_FORMAT_LDAP, ctx );
 821                 if ( rc != LDAP_SUCCESS ) {
 822                         return LDAP_INVALID_SYNTAX;
 823                 }
 824
 825                 assert( strlen( val->bv_val ) == val->bv_len );
 826
 827                 /*
 828                  * Schema-aware rewrite
 829                  */
 830                 if ( LDAPDN_rewrite( *dn, flags, ctx ) != LDAP_SUCCESS ) {
 831                         ldap_dnfree_x( *dn, ctx );
 832                         *dn = NULL;
 833                         return LDAP_INVALID_SYNTAX;
 834                 }
 835         }
 836
 837         Debug( LDAP_DEBUG_TRACE, "<<< dn%sDN\n",
 838                         flags == SLAP_LDAPDN_PRETTY ? "Pretty" : "Normal",
 839                         0, 0 );
 840
 841         return LDAP_SUCCESS;
 842 }
 843
 844 /*
 845  * Combination of both dnPretty and dnNormalize
 846  */
 847 int
 848 dnPrettyNormal(
 849         Syntax *syntax,
 850         struct berval *val,
 851         struct berval *pretty,
 852         struct berval *normal,
 853         void *ctx)
 854 {
 855         Debug( LDAP_DEBUG_TRACE, ">>> dnPrettyNormal: <%s>\n", val->bv_val, 0, 0 );
 856
 857         assert( val );
 858         assert( pretty );
 859         assert( normal );
 860
 861         if ( val->bv_len == 0 ) {
 862                 ber_dupbv_x( pretty, val, ctx );
 863                 ber_dupbv_x( normal, val, ctx );
 864
 865         } else if ( val->bv_len > SLAP_LDAPDN_MAXLEN ) {
 866                 /* too big */
 867                 return LDAP_INVALID_SYNTAX;
 868
 869         } else {
 870                 LDAPDN          dn = NULL;
 871                 int             rc;
 872
 873                 pretty->bv_val = NULL;
 874                 normal->bv_val = NULL;
 875                 pretty->bv_len = 0;
 876                 normal->bv_len = 0;
 877
 878                 /* FIXME: should be liberal in what we accept */
 879                 rc = ldap_bv2dn_x( val, &dn, LDAP_DN_FORMAT_LDAP, ctx );
 880                 if ( rc != LDAP_SUCCESS ) {
 881                         return LDAP_INVALID_SYNTAX;
 882                 }
 883
 884                 assert( strlen( val->bv_val ) == val->bv_len );
 885
 886                 /*
 887                  * Schema-aware rewrite
 888                  */
 889                 if ( LDAPDN_rewrite( dn, SLAP_LDAPDN_PRETTY, ctx ) != LDAP_SUCCESS ) {
 890                         ldap_dnfree_x( dn, ctx );
 891                         return LDAP_INVALID_SYNTAX;
 892                 }
 893
 894                 rc = ldap_dn2bv_x( dn, pretty,
 895                         LDAP_DN_FORMAT_LDAPV3 | LDAP_DN_PRETTY, ctx );
 896
 897                 if ( rc != LDAP_SUCCESS ) {
 898                         ldap_dnfree_x( dn, ctx );
 899                         return LDAP_INVALID_SYNTAX;
 900                 }
 901
 902                 if ( LDAPDN_rewrite( dn, 0, ctx ) != LDAP_SUCCESS ) {
 903                         ldap_dnfree_x( dn, ctx );
 904                         ber_memfree_x( pretty->bv_val, ctx );
 905                         pretty->bv_val = NULL;
 906                         pretty->bv_len = 0;
 907                         return LDAP_INVALID_SYNTAX;
 908                 }
 909
 910                 rc = ldap_dn2bv_x( dn, normal,
 911                         LDAP_DN_FORMAT_LDAPV3 | LDAP_DN_PRETTY, ctx );
 912
 913                 ldap_dnfree_x( dn, ctx );
 914                 if ( rc != LDAP_SUCCESS ) {
 915                         ber_memfree_x( pretty->bv_val, ctx );
 916                         pretty->bv_val = NULL;
 917                         pretty->bv_len = 0;
 918                         return LDAP_INVALID_SYNTAX;
 919                 }
 920         }
 921
 922         Debug( LDAP_DEBUG_TRACE, "<<< dnPrettyNormal: <%s>, <%s>\n",
 923                 pretty->bv_val, normal->bv_val, 0 );
 924
 925         return LDAP_SUCCESS;
 926 }
 927
 928 /*
 929  * dnMatch routine
 930  */
 931 int
 932 dnMatch(
 933         int *matchp,
 934         slap_mask_t flags,
 935         Syntax *syntax,
 936         MatchingRule *mr,
 937         struct berval *value,
 938         void *assertedValue )
 939 {
 940         int match;
 941         struct berval *asserted = (struct berval *) assertedValue;
 942
 943         assert( matchp );
 944         assert( value );
 945         assert( assertedValue );
 946         assert( !BER_BVISNULL( value ) );
 947         assert( !BER_BVISNULL( asserted ) );
 948
 949         match = value->bv_len - asserted->bv_len;
 950
 951         if ( match == 0 ) {
 952                 match = memcmp( value->bv_val, asserted->bv_val,
 953                                 value->bv_len );
 954         }
 955
 956         Debug( LDAP_DEBUG_ARGS, "dnMatch %d\n\t\"%s\"\n\t\"%s\"\n",
 957                 match, value->bv_val, asserted->bv_val );
 958
 959         *matchp = match;
 960         return LDAP_SUCCESS;
 961 }
 962
 963 /*
 964  * dnRelativeMatch routine
 965  */
 966 int
 967 dnRelativeMatch(
 968         int *matchp,
 969         slap_mask_t flags,
 970         Syntax *syntax,
 971         MatchingRule *mr,
 972         struct berval *value,
 973         void *assertedValue )
 974 {
 975         int match;
 976         struct berval *asserted = (struct berval *) assertedValue;
 977
 978         assert( matchp );
 979         assert( value );
 980         assert( assertedValue );
 981         assert( !BER_BVISNULL( value ) );
 982         assert( !BER_BVISNULL( asserted ) );
 983
 984         if( mr == slap_schema.si_mr_dnSubtreeMatch ) {
 985                 if( asserted->bv_len > value->bv_len ) {
 986                         match = -1;
 987                 } else if ( asserted->bv_len == value->bv_len ) {
 988                         match = memcmp( value->bv_val, asserted->bv_val,
 989                                 value->bv_len );
 990                 } else {
 991                         if( DN_SEPARATOR(
 992                                 value->bv_val[value->bv_len - asserted->bv_len - 1] ))
 993                         {
 994                                 match = memcmp(
 995                                         &value->bv_val[value->bv_len - asserted->bv_len],
 996                                         asserted->bv_val,
 997                                         asserted->bv_len );
 998                         } else {
 999                                 return 1;
1000                         }
1001                 }
1002
1003                 *matchp = match;
1004                 return LDAP_SUCCESS;
1005
1006         }
1007
1008         if( mr == slap_schema.si_mr_dnSuperiorMatch ) {
1009                 asserted = value;
1010                 value = (struct berval *) assertedValue;
1011                 mr = slap_schema.si_mr_dnSubordinateMatch;
1012         }
1013
1014         if( mr == slap_schema.si_mr_dnSubordinateMatch ) {
1015                 if( asserted->bv_len >= value->bv_len ) {
1016                         match = -1;
1017                 } else {
1018                         if( DN_SEPARATOR(
1019                                 value->bv_val[value->bv_len - asserted->bv_len - 1] ))
1020                         {
1021                                 match = memcmp(
1022                                         &value->bv_val[value->bv_len - asserted->bv_len],
1023                                         asserted->bv_val,
1024                                         asserted->bv_len );
1025                         } else {
1026                                 return 1;
1027                         }
1028                 }
1029
1030                 *matchp = match;
1031                 return LDAP_SUCCESS;
1032         }
1033
1034         if( mr == slap_schema.si_mr_dnOneLevelMatch ) {
1035                 if( asserted->bv_len >= value->bv_len ) {
1036                         match = -1;
1037                 } else {
1038                         if( DN_SEPARATOR(
1039                                 value->bv_val[value->bv_len - asserted->bv_len - 1] ))
1040                         {
1041                                 match = memcmp(
1042                                         &value->bv_val[value->bv_len - asserted->bv_len],
1043                                         asserted->bv_val,
1044                                         asserted->bv_len );
1045
1046                                 if( !match ) {
1047                                         struct berval rdn;
1048                                         rdn.bv_val = value->bv_val;
1049                                         rdn.bv_len = value->bv_len - asserted->bv_len - 1;
1050                                         match = dnIsOneLevelRDN( &rdn ) ? 0 : 1;
1051                                 }
1052                         } else {
1053                                 return 1;
1054                         }
1055                 }
1056
1057                 *matchp = match;
1058                 return LDAP_SUCCESS;
1059         }
1060
1061         /* should not be reachable */
1062         assert( 0 );
1063         return LDAP_OTHER;
1064 }
1065
1066 int
1067 rdnMatch(
1068         int *matchp,
1069         slap_mask_t flags,
1070         Syntax *syntax,
1071         MatchingRule *mr,
1072         struct berval *value,
1073         void *assertedValue )
1074 {
1075         int match;
1076         struct berval *asserted = (struct berval *) assertedValue;
1077
1078         assert( matchp );
1079         assert( value );
1080         assert( assertedValue );
1081
1082         match = value->bv_len - asserted->bv_len;
1083
1084         if ( match == 0 ) {
1085                 match = memcmp( value->bv_val, asserted->bv_val,
1086                                 value->bv_len );
1087         }
1088
1089         Debug( LDAP_DEBUG_ARGS, "rdnMatch %d\n\t\"%s\"\n\t\"%s\"\n",
1090                 match, value->bv_val, asserted->bv_val );
1091
1092         *matchp = match;
1093         return LDAP_SUCCESS;
1094 }
1095
1096
1097 /*
1098  * dnParent - dn's parent, in-place
1099  * note: the incoming dn is assumed to be normalized/prettyfied,
1100  * so that escaped rdn/ava separators are in '\'+hexpair form
1101  */
1102 void
1103 dnParent(
1104         struct berval   *dn,
1105         struct berval   *pdn )
1106 {
1107         char    *p;
1108
1109         p = strchr( dn->bv_val, ',' );
1110
1111         /* one-level dn */
1112         if ( p == NULL ) {
1113                 pdn->bv_len = 0;
1114                 pdn->bv_val = dn->bv_val + dn->bv_len;
1115                 return;
1116         }
1117
1118         assert( DN_SEPARATOR( p[ 0 ] ) );
1119         p++;
1120
1121         assert( ATTR_LEADCHAR( p[ 0 ] ) );
1122         pdn->bv_val = p;
1123         pdn->bv_len = dn->bv_len - (p - dn->bv_val);
1124
1125         return;
1126 }
1127
1128 /*
1129  * dnRdn - dn's rdn, in-place
1130  * note: the incoming dn is assumed to be normalized/prettyfied,
1131  * so that escaped rdn/ava separators are in '\'+hexpair form
1132  */
1133 void
1134 dnRdn(
1135         struct berval   *dn,
1136         struct berval   *rdn )
1137 {
1138         char    *p;
1139
1140         *rdn = *dn;
1141         p = strchr( dn->bv_val, ',' );
1142
1143         /* one-level dn */
1144         if ( p == NULL ) {
1145                 return;
1146         }
1147
1148         assert( DN_SEPARATOR( p[ 0 ] ) );
1149         assert( ATTR_LEADCHAR( p[ 1 ] ) );
1150         rdn->bv_len = p - dn->bv_val;
1151
1152         return;
1153 }
1154
1155 int
1156 dnExtractRdn(
1157         struct berval   *dn,
1158         struct berval   *rdn,
1159         void *ctx )
1160 {
1161         LDAPRDN         tmpRDN;
1162         const char      *p;
1163         int             rc;
1164
1165         assert( dn );
1166         assert( rdn );
1167
1168         if( dn->bv_len == 0 ) {
1169                 return LDAP_OTHER;
1170         }
1171
1172         rc = ldap_bv2rdn_x( dn, &tmpRDN, (char **)&p, LDAP_DN_FORMAT_LDAP, ctx );
1173         if ( rc != LDAP_SUCCESS ) {
1174                 return rc;
1175         }
1176
1177         rc = ldap_rdn2bv_x( tmpRDN, rdn, LDAP_DN_FORMAT_LDAPV3 | LDAP_DN_PRETTY,
1178                 ctx );
1179
1180         ldap_rdnfree_x( tmpRDN, ctx );
1181         return rc;
1182 }
1183
1184 /*
1185  * We can assume the input is a prettied or normalized DN
1186  */
1187 int
1188 dn_rdnlen(
1189         Backend         *be,
1190         struct berval   *dn_in )
1191 {
1192         const char      *p;
1193
1194         assert( dn_in );
1195
1196         if ( dn_in == NULL ) {
1197                 return 0;
1198         }
1199
1200         if ( !dn_in->bv_len ) {
1201                 return 0;
1202         }
1203
1204         if ( be != NULL && be_issuffix( be, dn_in ) ) {
1205                 return 0;
1206         }
1207
1208         p = strchr( dn_in->bv_val, ',' );
1209
1210         return p ? p - dn_in->bv_val : dn_in->bv_len;
1211 }
1212
1213
1214 /* rdnValidate:
1215  *
1216  * LDAP_SUCCESS if rdn is a legal rdn;
1217  * LDAP_INVALID_SYNTAX otherwise (including a sequence of rdns)
1218  */
1219 int
1220 rdn_validate( struct berval *rdn )
1221 {
1222 #if 1
1223         /* Major cheat!
1224          * input is a pretty or normalized DN
1225          * hence, we can just search for ','
1226          */
1227         if( rdn == NULL || rdn->bv_len == 0 ||
1228                 rdn->bv_len > SLAP_LDAPDN_MAXLEN )
1229         {
1230                 return LDAP_INVALID_SYNTAX;
1231         }
1232         return strchr( rdn->bv_val, ',' ) == NULL
1233                 ? LDAP_SUCCESS : LDAP_INVALID_SYNTAX;
1234
1235 #else
1236         LDAPRDN         *RDN, **DN[ 2 ] = { &RDN, NULL };
1237         const char      *p;
1238         int             rc;
1239
1240         /*
1241          * must be non-empty
1242          */
1243         if ( rdn == NULL || rdn == '\0' ) {
1244                 return 0;
1245         }
1246
1247         /*
1248          * must be parsable
1249          */
1250         rc = ldap_bv2rdn( rdn, &RDN, (char **)&p, LDAP_DN_FORMAT_LDAP );
1251         if ( rc != LDAP_SUCCESS ) {
1252                 return 0;
1253         }
1254
1255         /*
1256          * Must be one-level
1257          */
1258         if ( p[ 0 ] != '\0' ) {
1259                 return 0;
1260         }
1261
1262         /*
1263          * Schema-aware validate
1264          */
1265         if ( rc == LDAP_SUCCESS ) {
1266                 rc = LDAPDN_validate( DN );
1267         }
1268         ldap_rdnfree( RDN );
1269
1270         /*
1271          * Must validate (there's a repeated parsing ...)
1272          */
1273         return ( rc == LDAP_SUCCESS );
1274 #endif
1275 }
1276
1277
1278 /* build_new_dn:
1279  *
1280  * Used by ldbm/bdb2 back_modrdn to create the new dn of entries being
1281  * renamed.
1282  *
1283  * new_dn = parent (p_dn) + separator + rdn (newrdn) + null.
1284  */
1285
1286 void
1287 build_new_dn( struct berval * new_dn,
1288         struct berval * parent_dn,
1289         struct berval * newrdn,
1290         void *memctx )
1291 {
1292         char *ptr;
1293
1294         if ( parent_dn == NULL || parent_dn->bv_len == 0 ) {
1295                 ber_dupbv( new_dn, newrdn );
1296                 return;
1297         }
1298
1299         new_dn->bv_len = parent_dn->bv_len + newrdn->bv_len + 1;
1300         new_dn->bv_val = (char *) slap_sl_malloc( new_dn->bv_len + 1, memctx );
1301
1302         ptr = lutil_strncopy( new_dn->bv_val, newrdn->bv_val, newrdn->bv_len );
1303         *ptr++ = ',';
1304         strcpy( ptr, parent_dn->bv_val );
1305 }
1306
1307
1308 /*
1309  * dnIsSuffix - tells whether suffix is a suffix of dn.
1310  * Both dn and suffix must be normalized.
1311  */
1312 int
1313 dnIsSuffix(
1314         const struct berval *dn,
1315         const struct berval *suffix )
1316 {
1317         int     d = dn->bv_len - suffix->bv_len;
1318
1319         assert( dn );
1320         assert( suffix );
1321
1322         /* empty suffix matches any dn */
1323         if ( suffix->bv_len == 0 ) {
1324                 return 1;
1325         }
1326
1327         /* suffix longer than dn */
1328         if ( d < 0 ) {
1329                 return 0;
1330         }
1331
1332         /* no rdn separator or escaped rdn separator */
1333         if ( d > 1 && !DN_SEPARATOR( dn->bv_val[ d - 1 ] ) ) {
1334                 return 0;
1335         }
1336
1337         /* no possible match or malformed dn */
1338         if ( d == 1 ) {
1339                 return 0;
1340         }
1341
1342         /* compare */
1343         return( strcmp( dn->bv_val + d, suffix->bv_val ) == 0 );
1344 }
1345
1346 int
1347 dnIsOneLevelRDN( struct berval *rdn )
1348 {
1349         ber_len_t       len = rdn->bv_len;
1350         for ( ; len--; ) {
1351                 if ( DN_SEPARATOR( rdn->bv_val[ len ] ) ) {
1352                         return 0;
1353                 }
1354         }
1355
1356         return 1;
1357 }
1358
1359 #ifdef HAVE_TLS
1360 static SLAP_CERT_MAP_FN *DNX509PeerNormalizeCertMap = NULL;
1361 #endif
1362
1363 int register_certificate_map_function(SLAP_CERT_MAP_FN *fn)
1364 {
1365 #ifdef HAVE_TLS
1366         if ( DNX509PeerNormalizeCertMap == NULL ) {
1367                 DNX509PeerNormalizeCertMap = fn;
1368                 return 0;
1369         }
1370 #endif
1371
1372         return -1;
1373 }
1374
1375 #ifdef HAVE_TLS
1376 /*
1377  * Convert an X.509 DN into a normalized LDAP DN
1378  */
1379 int
1380 dnX509normalize( void *x509_name, struct berval *out )
1381 {
1382         /* Invoke the LDAP library's converter with our schema-rewriter */
1383         int rc = ldap_X509dn2bv( x509_name, out, LDAPDN_rewrite, 0 );
1384
1385         Debug( LDAP_DEBUG_TRACE,
1386                 "dnX509Normalize: <%s>\n", out->bv_val, 0, 0 );
1387
1388         return rc;
1389 }
1390
1391 /*
1392  * Get the TLS session's peer's DN into a normalized LDAP DN
1393  */
1394 int
1395 dnX509peerNormalize( void *ssl, struct berval *dn )
1396 {
1397         int rc = LDAP_INVALID_CREDENTIALS;
1398
1399         if ( DNX509PeerNormalizeCertMap != NULL )
1400                 rc = (*DNX509PeerNormalizeCertMap)( ssl, dn );
1401
1402         if ( rc != LDAP_SUCCESS ) {
1403                 rc = ldap_pvt_tls_get_peer_dn( ssl, dn,
1404                         (LDAPDN_rewrite_dummy *)LDAPDN_rewrite, 0 );
1405         }
1406
1407         return rc;
1408 }
1409 #endif