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 1998-2004 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 "ldap_pvt.h" /* must be after slap.h, to get ldap_bv2dn_x() & co */
  38 #include "lutil.h"
  39
  40 /*
  41  * The DN syntax-related functions take advantage of the dn representation
  42  * handling functions ldap_str2dn/ldap_dn2str.  The latter are not schema-
  43  * aware, so the attributes and their values need be validated (and possibly
  44  * normalized).  In the current implementation the required validation/nor-
  45  * malization/"pretty"ing are done on newly created DN structural represen-
  46  * tations; however the idea is to move towards DN handling in structural
  47  * representation instead of the current string representation.  To this
  48  * purpose, we need to do only the required operations and keep track of
  49  * what has been done to minimize their impact on performances.
  50  *
  51  * Developers are strongly encouraged to use this feature, to speed-up
  52  * its stabilization.
  53  */
  54
  55 #define AVA_PRIVATE( ava ) ( ( AttributeDescription * )(ava)->la_private )
  56
  57 static int
  58 LDAPRDN_validate( LDAPRDN rdn )
  59 {
  60         int             iAVA;
  61         int             rc;
  62
  63         assert( rdn );
  64
  65         for ( iAVA = 0; rdn[ iAVA ]; iAVA++ ) {
  66                 LDAPAVA                 *ava = rdn[ iAVA ];
  67                 AttributeDescription    *ad;
  68                 slap_syntax_validate_func *validate = NULL;
  69
  70                 assert( ava );
  71
  72                 if ( ( ad = AVA_PRIVATE( ava ) ) == NULL ) {
  73                         const char      *text = NULL;
  74
  75                         rc = slap_bv2ad( &ava->la_attr, &ad, &text );
  76                         if ( rc != LDAP_SUCCESS ) {
  77                                 return LDAP_INVALID_SYNTAX;
  78                         }
  79
  80                         ava->la_private = ( void * )ad;
  81                 }
  82
  83                 /*
  84                  * Replace attr oid/name with the canonical name
  85                  */
  86                 ava->la_attr = ad->ad_cname;
  87
  88                 validate = ad->ad_type->sat_syntax->ssyn_validate;
  89
  90                 if ( validate ) {
  91                         /*
  92                          * validate value by validate function
  93                          */
  94                         rc = ( *validate )( ad->ad_type->sat_syntax,
  95                                 &ava->la_value );
  96
  97                         if ( rc != LDAP_SUCCESS ) {
  98                                 return LDAP_INVALID_SYNTAX;
  99                         }
 100                 }
 101         }
 102
 103         return LDAP_SUCCESS;
 104 }
 105
 106 /*
 107  * In-place, schema-aware validation of the
 108  * structural representation of a distinguished name.
 109  */
 110 static int
 111 LDAPDN_validate( LDAPDN dn )
 112 {
 113         int             iRDN;
 114         int             rc;
 115
 116         assert( dn );
 117
 118         for ( iRDN = 0; dn[ iRDN ]; iRDN++ ) {
 119                 LDAPRDN         rdn = dn[ iRDN ];
 120                 int             iAVA;
 121
 122                 assert( rdn );
 123
 124                 for ( iAVA = 0; rdn[ iAVA ]; iAVA++ ) {
 125                         LDAPAVA                 *ava = rdn[ iAVA ];
 126                         AttributeDescription    *ad;
 127                         slap_syntax_validate_func *validate = NULL;
 128
 129                         assert( ava );
 130
 131                         if ( ( ad = AVA_PRIVATE( ava ) ) == NULL ) {
 132                                 const char      *text = NULL;
 133
 134                                 rc = slap_bv2ad( &ava->la_attr, &ad, &text );
 135                                 if ( rc != LDAP_SUCCESS ) {
 136                                         return LDAP_INVALID_SYNTAX;
 137                                 }
 138
 139                                 ava->la_private = ( void * )ad;
 140                         }
 141
 142                         /*
 143                          * Replace attr oid/name with the canonical name
 144                          */
 145                         ava->la_attr = ad->ad_cname;
 146
 147                         validate = ad->ad_type->sat_syntax->ssyn_validate;
 148
 149                         if ( validate ) {
 150                                 /*
 151                                  * validate value by validate function
 152                                  */
 153                                 rc = ( *validate )( ad->ad_type->sat_syntax,
 154                                         &ava->la_value );
 155
 156                                 if ( rc != LDAP_SUCCESS ) {
 157                                         return LDAP_INVALID_SYNTAX;
 158                                 }
 159                         }
 160                 }
 161         }
 162
 163         return LDAP_SUCCESS;
 164 }
 165
 166 /*
 167  * dn validate routine
 168  */
 169 int
 170 dnValidate(
 171         Syntax *syntax,
 172         struct berval *in )
 173 {
 174         int             rc;
 175         LDAPDN          dn = NULL;
 176
 177         assert( in );
 178
 179         if ( in->bv_len == 0 ) {
 180                 return LDAP_SUCCESS;
 181
 182         } else if ( in->bv_len > SLAP_LDAPDN_MAXLEN ) {
 183                 return LDAP_INVALID_SYNTAX;
 184         }
 185
 186         rc = ldap_bv2dn( in, &dn, LDAP_DN_FORMAT_LDAP );
 187         if ( rc != LDAP_SUCCESS ) {
 188                 return LDAP_INVALID_SYNTAX;
 189         }
 190
 191         assert( strlen( in->bv_val ) == in->bv_len );
 192
 193         /*
 194          * Schema-aware validate
 195          */
 196         rc = LDAPDN_validate( dn );
 197         ldap_dnfree( dn );
 198
 199         if ( rc != LDAP_SUCCESS ) {
 200                 return LDAP_INVALID_SYNTAX;
 201         }
 202
 203         return LDAP_SUCCESS;
 204 }
 205
 206 int
 207 rdnValidate(
 208         Syntax *syntax,
 209         struct berval *in )
 210 {
 211         int             rc;
 212         LDAPRDN         rdn;
 213         char*           p;
 214
 215         assert( in );
 216         if ( in->bv_len == 0 ) {
 217                 return LDAP_SUCCESS;
 218
 219         } else if ( in->bv_len > SLAP_LDAPDN_MAXLEN ) {
 220                 return LDAP_INVALID_SYNTAX;
 221         }
 222
 223         rc = ldap_bv2rdn_x( in , &rdn, (char **) &p,
 224                                 LDAP_DN_FORMAT_LDAP, NULL);
 225         if ( rc != LDAP_SUCCESS ) {
 226                 return LDAP_INVALID_SYNTAX;
 227         }
 228
 229         assert( strlen( in->bv_val ) == in->bv_len );
 230
 231         /*
 232          * Schema-aware validate
 233          */
 234         rc = LDAPRDN_validate( rdn );
 235         ldap_rdnfree( rdn );
 236
 237         if ( rc != LDAP_SUCCESS ) {
 238                 return LDAP_INVALID_SYNTAX;
 239         }
 240
 241         return LDAP_SUCCESS;
 242 }
 243
 244
 245 /*
 246  * AVA sorting inside a RDN
 247  *
 248  * rule: sort attributeTypes in alphabetical order; in case of multiple
 249  * occurrences of the same attributeType, sort values in byte order
 250  * (use memcmp, which implies alphabetical order in case of IA5 value;
 251  * this should guarantee the repeatability of the operation).
 252  *
 253  * Note: the sorting can be slightly improved by sorting first
 254  * by attribute type length, then by alphabetical order.
 255  *
 256  * uses a linear search; should be fine since the number of AVAs in
 257  * a RDN should be limited.
 258  */
 259 static void
 260 AVA_Sort( LDAPRDN rdn, int iAVA )
 261 {
 262         int             i;
 263         LDAPAVA         *ava_in = rdn[ iAVA ];
 264
 265         assert( rdn );
 266         assert( ava_in );
 267
 268         for ( i = 0; i < iAVA; i++ ) {
 269                 LDAPAVA         *ava = rdn[ i ];
 270                 int             a, j;
 271
 272                 assert( ava );
 273
 274                 a = strcmp( ava_in->la_attr.bv_val, ava->la_attr.bv_val );
 275
 276                 if ( a > 0 ) {
 277                         break;
 278                 }
 279
 280                 while ( a == 0 ) {
 281                         int             v, d;
 282
 283                         d = ava_in->la_value.bv_len - ava->la_value.bv_len;
 284
 285                         v = memcmp( ava_in->la_value.bv_val,
 286                                         ava->la_value.bv_val,
 287                                         d <= 0 ? ava_in->la_value.bv_len
 288                                                 : ava->la_value.bv_len );
 289
 290                         if ( v == 0 && d != 0 ) {
 291                                 v = d;
 292                         }
 293
 294                         if ( v <= 0 ) {
 295                                 /*
 296                                  * got it!
 297                                  */
 298                                 break;
 299                         }
 300
 301                         if ( ++i == iAVA ) {
 302                                 /*
 303                                  * already sorted
 304                                  */
 305                                 return;
 306                         }
 307
 308                         ava = rdn[ i ];
 309                         a = strcmp( ava_in->la_attr.bv_val,
 310                                         ava->la_attr.bv_val );
 311                 }
 312
 313                 /*
 314                  * move ahead
 315                  */
 316                 for ( j = iAVA; j > i; j-- ) {
 317                         rdn[ j ] = rdn[ j - 1 ];
 318                 }
 319                 rdn[ i ] = ava_in;
 320
 321                 return;
 322         }
 323 }
 324
 325 static int
 326 LDAPRDN_rewrite( LDAPRDN rdn, unsigned flags, void *ctx )
 327 {
 328
 329         int rc;
 330         int             iAVA;
 331         for ( iAVA = 0; rdn[ iAVA ]; iAVA++ ) {
 332                 LDAPAVA                 *ava = rdn[ iAVA ];
 333                 AttributeDescription    *ad;
 334                 slap_syntax_validate_func *validf = NULL;
 335                 slap_mr_normalize_func *normf = NULL;
 336                 slap_syntax_transform_func *transf = NULL;
 337                 MatchingRule *mr = NULL;
 338                 struct berval           bv = BER_BVNULL;
 339                 int                     do_sort = 0;
 340
 341                 assert( ava );
 342
 343                 if ( ( ad = AVA_PRIVATE( ava ) ) == NULL ) {
 344                         const char      *text = NULL;
 345
 346                         rc = slap_bv2ad( &ava->la_attr, &ad, &text );
 347                         if ( rc != LDAP_SUCCESS ) {
 348                                 return LDAP_INVALID_SYNTAX;
 349                         }
 350
 351                         ava->la_private = ( void * )ad;
 352                         do_sort = 1;
 353                 }
 354
 355                 /*
 356                  * Replace attr oid/name with the canonical name
 357                  */
 358                 ava->la_attr = ad->ad_cname;
 359
 360                 if( ava->la_flags & LDAP_AVA_BINARY ) {
 361                         if( ava->la_value.bv_len == 0 ) {
 362                                 /* BER encoding is empty */
 363                                 return LDAP_INVALID_SYNTAX;
 364                         }
 365
 366                         /* AVA is binary encoded, don't muck with it */
 367                 } else if( flags & SLAP_LDAPDN_PRETTY ) {
 368                         transf = ad->ad_type->sat_syntax->ssyn_pretty;
 369                         if( !transf ) {
 370                                 validf = ad->ad_type->sat_syntax->ssyn_validate;
 371                         }
 372                 } else { /* normalization */
 373                         validf = ad->ad_type->sat_syntax->ssyn_validate;
 374                         mr = ad->ad_type->sat_equality;
 375                         if( mr ) normf = mr->smr_normalize;
 376                 }
 377
 378                 if ( validf ) {
 379                         /* validate value before normalization */
 380                         rc = ( *validf )( ad->ad_type->sat_syntax,
 381                                 ava->la_value.bv_len
 382                                         ? &ava->la_value
 383                                         : (struct berval *) &slap_empty_bv );
 384
 385                         if ( rc != LDAP_SUCCESS ) {
 386                                 return LDAP_INVALID_SYNTAX;
 387                         }
 388                 }
 389
 390                 if ( transf ) {
 391                         /*
 392                          * transform value by pretty function
 393                          *      if value is empty, use empty_bv
 394                          */
 395                         rc = ( *transf )( ad->ad_type->sat_syntax,
 396                                 ava->la_value.bv_len
 397                                         ? &ava->la_value
 398                                         : (struct berval *) &slap_empty_bv,
 399                                 &bv, ctx );
 400
 401                         if ( rc != LDAP_SUCCESS ) {
 402                                 return LDAP_INVALID_SYNTAX;
 403                         }
 404                 }
 405
 406                 if ( normf ) {
 407                         /*
 408                          * normalize value
 409                          *      if value is empty, use empty_bv
 410                          */
 411                         rc = ( *normf )(
 412                                 SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
 413                                 ad->ad_type->sat_syntax,
 414                                 mr,
 415                                 ava->la_value.bv_len
 416                                         ? &ava->la_value
 417                                         : (struct berval *) &slap_empty_bv,
 418                                 &bv, ctx );
 419
 420                         if ( rc != LDAP_SUCCESS ) {
 421                                 return LDAP_INVALID_SYNTAX;
 422                         }
 423                 }
 424
 425
 426                 if( bv.bv_val ) {
 427                         if ( ava->la_flags & LDAP_AVA_FREE_VALUE )
 428                                 ber_memfree_x( ava->la_value.bv_val, ctx );
 429                         ava->la_value = bv;
 430                         ava->la_flags |= LDAP_AVA_FREE_VALUE;
 431                 }
 432
 433                 if( do_sort ) AVA_Sort( rdn, iAVA );
 434         }
 435         return LDAP_SUCCESS;
 436 }
 437
 438 /*
 439  * In-place, schema-aware normalization / "pretty"ing of the
 440  * structural representation of a distinguished name.
 441  */
 442 static int
 443 LDAPDN_rewrite( LDAPDN dn, unsigned flags, void *ctx )
 444 {
 445         int             iRDN;
 446         int             rc;
 447
 448         assert( dn );
 449
 450         for ( iRDN = 0; dn[ iRDN ]; iRDN++ ) {
 451                 LDAPRDN         rdn = dn[ iRDN ];
 452                 int             iAVA;
 453
 454                 assert( rdn );
 455
 456                 for ( iAVA = 0; rdn[ iAVA ]; iAVA++ ) {
 457                         LDAPAVA                 *ava = rdn[ iAVA ];
 458                         AttributeDescription    *ad;
 459                         slap_syntax_validate_func *validf = NULL;
 460                         slap_mr_normalize_func *normf = NULL;
 461                         slap_syntax_transform_func *transf = NULL;
 462                         MatchingRule *mr = NULL;
 463                         struct berval           bv = BER_BVNULL;
 464                         int                     do_sort = 0;
 465
 466                         assert( ava );
 467
 468                         if ( ( ad = AVA_PRIVATE( ava ) ) == NULL ) {
 469                                 const char      *text = NULL;
 470
 471                                 rc = slap_bv2ad( &ava->la_attr, &ad, &text );
 472                                 if ( rc != LDAP_SUCCESS ) {
 473                                         return LDAP_INVALID_SYNTAX;
 474                                 }
 475
 476                                 ava->la_private = ( void * )ad;
 477                                 do_sort = 1;
 478                         }
 479
 480                         /*
 481                          * Replace attr oid/name with the canonical name
 482                          */
 483                         ava->la_attr = ad->ad_cname;
 484
 485                         if( ava->la_flags & LDAP_AVA_BINARY ) {
 486                                 if( ava->la_value.bv_len == 0 ) {
 487                                         /* BER encoding is empty */
 488                                         return LDAP_INVALID_SYNTAX;
 489                                 }
 490
 491                                 /* AVA is binary encoded, don't muck with it */
 492                         } else if( flags & SLAP_LDAPDN_PRETTY ) {
 493                                 transf = ad->ad_type->sat_syntax->ssyn_pretty;
 494                                 if( !transf ) {
 495                                         validf = ad->ad_type->sat_syntax->ssyn_validate;
 496                                 }
 497                         } else { /* normalization */
 498                                 validf = ad->ad_type->sat_syntax->ssyn_validate;
 499                                 mr = ad->ad_type->sat_equality;
 500                                 if( mr ) normf = mr->smr_normalize;
 501                         }
 502
 503                         if ( validf ) {
 504                                 /* validate value before normalization */
 505                                 rc = ( *validf )( ad->ad_type->sat_syntax,
 506                                         ava->la_value.bv_len
 507                                                 ? &ava->la_value
 508                                                 : (struct berval *) &slap_empty_bv );
 509
 510                                 if ( rc != LDAP_SUCCESS ) {
 511                                         return LDAP_INVALID_SYNTAX;
 512                                 }
 513                         }
 514
 515                         if ( transf ) {
 516                                 /*
 517                                  * transform value by pretty function
 518                                  *      if value is empty, use empty_bv
 519                                  */
 520                                 rc = ( *transf )( ad->ad_type->sat_syntax,
 521                                         ava->la_value.bv_len
 522                                                 ? &ava->la_value
 523                                                 : (struct berval *) &slap_empty_bv,
 524                                         &bv, ctx );
 525
 526                                 if ( rc != LDAP_SUCCESS ) {
 527                                         return LDAP_INVALID_SYNTAX;
 528                                 }
 529                         }
 530
 531                         if ( normf ) {
 532                                 /*
 533                                  * normalize value
 534                                  *      if value is empty, use empty_bv
 535                                  */
 536                                 rc = ( *normf )(
 537                                         SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
 538                                         ad->ad_type->sat_syntax,
 539                                         mr,
 540                                         ava->la_value.bv_len
 541                                                 ? &ava->la_value
 542                                                 : (struct berval *) &slap_empty_bv,
 543                                         &bv, ctx );
 544
 545                                 if ( rc != LDAP_SUCCESS ) {
 546                                         return LDAP_INVALID_SYNTAX;
 547                                 }
 548                         }
 549
 550
 551                         if( bv.bv_val ) {
 552                                 if ( ava->la_flags & LDAP_AVA_FREE_VALUE )
 553                                         ber_memfree_x( ava->la_value.bv_val, ctx );
 554                                 ava->la_value = bv;
 555                                 ava->la_flags |= LDAP_AVA_FREE_VALUE;
 556                         }
 557
 558                         if( do_sort ) AVA_Sort( rdn, iAVA );
 559                 }
 560         }
 561
 562         return LDAP_SUCCESS;
 563 }
 564
 565 int
 566 dnNormalize(
 567     slap_mask_t use,
 568     Syntax *syntax,
 569     MatchingRule *mr,
 570     struct berval *val,
 571     struct berval *out,
 572     void *ctx)
 573 {
 574         assert( val );
 575         assert( out );
 576
 577         Debug( LDAP_DEBUG_TRACE, ">>> dnNormalize: <%s>\n", val->bv_val, 0, 0 );
 578
 579         if ( val->bv_len != 0 ) {
 580                 LDAPDN          dn = NULL;
 581                 int             rc;
 582
 583                 /*
 584                  * Go to structural representation
 585                  */
 586                 rc = ldap_bv2dn_x( val, &dn, LDAP_DN_FORMAT_LDAP, ctx );
 587                 if ( rc != LDAP_SUCCESS ) {
 588                         return LDAP_INVALID_SYNTAX;
 589                 }
 590
 591                 assert( strlen( val->bv_val ) == val->bv_len );
 592
 593                 /*
 594                  * Schema-aware rewrite
 595                  */
 596                 if ( LDAPDN_rewrite( dn, 0, ctx ) != LDAP_SUCCESS ) {
 597                         ldap_dnfree_x( dn, ctx );
 598                         return LDAP_INVALID_SYNTAX;
 599                 }
 600
 601                 /*
 602                  * Back to string representation
 603                  */
 604                 rc = ldap_dn2bv_x( dn, out,
 605                         LDAP_DN_FORMAT_LDAPV3 | LDAP_DN_PRETTY, ctx );
 606
 607                 ldap_dnfree_x( dn, ctx );
 608
 609                 if ( rc != LDAP_SUCCESS ) {
 610                         return LDAP_INVALID_SYNTAX;
 611                 }
 612         } else {
 613                 ber_dupbv_x( out, val, ctx );
 614         }
 615
 616         Debug( LDAP_DEBUG_TRACE, "<<< dnNormalize: <%s>\n", out->bv_val, 0, 0 );
 617
 618         return LDAP_SUCCESS;
 619 }
 620
 621 int
 622 rdnNormalize(
 623     slap_mask_t use,
 624     Syntax *syntax,
 625     MatchingRule *mr,
 626     struct berval *val,
 627     struct berval *out,
 628     void *ctx)
 629 {
 630         assert( val );
 631         assert( out );
 632
 633         Debug( LDAP_DEBUG_TRACE, ">>> dnNormalize: <%s>\n", val->bv_val, 0, 0 );
 634         if ( val->bv_len != 0 ) {
 635                 LDAPRDN         rdn = NULL;
 636                 int             rc;
 637                 char*           p;
 638
 639                 /*
 640                  * Go to structural representation
 641                  */
 642                 rc = ldap_bv2rdn_x( val , &rdn, (char **) &p,
 643                                         LDAP_DN_FORMAT_LDAP, ctx);
 644
 645                 if ( rc != LDAP_SUCCESS ) {
 646                         return LDAP_INVALID_SYNTAX;
 647                 }
 648
 649                 assert( strlen( val->bv_val ) == val->bv_len );
 650
 651                 /*
 652                  * Schema-aware rewrite
 653                  */
 654                 if ( LDAPRDN_rewrite( rdn, 0, ctx ) != LDAP_SUCCESS ) {
 655                         ldap_rdnfree_x( rdn, ctx );
 656                         return LDAP_INVALID_SYNTAX;
 657                 }
 658
 659                 /*
 660                  * Back to string representation
 661                  */
 662                 rc = ldap_rdn2bv_x( rdn, out,
 663                         LDAP_DN_FORMAT_LDAPV3 | LDAP_DN_PRETTY, ctx );
 664
 665                 ldap_rdnfree_x( rdn, ctx );
 666
 667                 if ( rc != LDAP_SUCCESS ) {
 668                         return LDAP_INVALID_SYNTAX;
 669                 }
 670         } else {
 671                 ber_dupbv_x( out, val, ctx );
 672         }
 673
 674         Debug( LDAP_DEBUG_TRACE, "<<< dnNormalize: <%s>\n", out->bv_val, 0, 0 );
 675
 676         return LDAP_SUCCESS;
 677 }
 678
 679 int
 680 dnPretty(
 681         Syntax *syntax,
 682         struct berval *val,
 683         struct berval *out,
 684         void *ctx)
 685 {
 686         assert( val );
 687         assert( out );
 688
 689         Debug( LDAP_DEBUG_TRACE, ">>> dnPretty: <%s>\n", val->bv_val, 0, 0 );
 690
 691         if ( val->bv_len == 0 ) {
 692                 ber_dupbv_x( out, val, ctx );
 693
 694         } else if ( val->bv_len > SLAP_LDAPDN_MAXLEN ) {
 695                 return LDAP_INVALID_SYNTAX;
 696
 697         } else {
 698                 LDAPDN          dn = NULL;
 699                 int             rc;
 700
 701                 /* FIXME: should be liberal in what we accept */
 702                 rc = ldap_bv2dn_x( val, &dn, LDAP_DN_FORMAT_LDAP, ctx );
 703                 if ( rc != LDAP_SUCCESS ) {
 704                         return LDAP_INVALID_SYNTAX;
 705                 }
 706
 707                 assert( strlen( val->bv_val ) == val->bv_len );
 708
 709                 /*
 710                  * Schema-aware rewrite
 711                  */
 712                 if ( LDAPDN_rewrite( dn, SLAP_LDAPDN_PRETTY, ctx ) != LDAP_SUCCESS ) {
 713                         ldap_dnfree_x( dn, ctx );
 714                         return LDAP_INVALID_SYNTAX;
 715                 }
 716
 717                 /* FIXME: not sure why the default isn't pretty */
 718                 /* RE: the default is the form that is used as
 719                  * an internal representation; the pretty form
 720                  * is a variant */
 721                 rc = ldap_dn2bv_x( dn, out,
 722                         LDAP_DN_FORMAT_LDAPV3 | LDAP_DN_PRETTY, ctx );
 723
 724                 ldap_dnfree_x( dn, ctx );
 725
 726                 if ( rc != LDAP_SUCCESS ) {
 727                         return LDAP_INVALID_SYNTAX;
 728                 }
 729         }
 730
 731         Debug( LDAP_DEBUG_TRACE, "<<< dnPretty: <%s>\n", out->bv_val, 0, 0 );
 732
 733         return LDAP_SUCCESS;
 734 }
 735
 736 int
 737 rdnPretty(
 738         Syntax *syntax,
 739         struct berval *val,
 740         struct berval *out,
 741         void *ctx)
 742 {
 743         assert( val );
 744         assert( out );
 745
 746         Debug( LDAP_DEBUG_TRACE, ">>> dnPretty: <%s>\n", val->bv_val, 0, 0 );
 747
 748         if ( val->bv_len == 0 ) {
 749                 ber_dupbv_x( out, val, ctx );
 750
 751         } else if ( val->bv_len > SLAP_LDAPDN_MAXLEN ) {
 752                 return LDAP_INVALID_SYNTAX;
 753
 754         } else {
 755                 LDAPRDN         rdn = NULL;
 756                 int             rc;
 757                 char*           p;
 758
 759                 /* FIXME: should be liberal in what we accept */
 760                 rc = ldap_bv2rdn_x( val , &rdn, (char **) &p,
 761                                         LDAP_DN_FORMAT_LDAP, ctx);
 762                 if ( rc != LDAP_SUCCESS ) {
 763                         return LDAP_INVALID_SYNTAX;
 764                 }
 765
 766                 assert( strlen( val->bv_val ) == val->bv_len );
 767
 768                 /*
 769                  * Schema-aware rewrite
 770                  */
 771                 if ( LDAPRDN_rewrite( rdn, SLAP_LDAPDN_PRETTY, ctx ) != LDAP_SUCCESS ) {
 772                         ldap_rdnfree_x( rdn, ctx );
 773                         return LDAP_INVALID_SYNTAX;
 774                 }
 775
 776                 /* FIXME: not sure why the default isn't pretty */
 777                 /* RE: the default is the form that is used as
 778                  * an internal representation; the pretty form
 779                  * is a variant */
 780                 rc = ldap_rdn2bv_x( rdn, out,
 781                         LDAP_DN_FORMAT_LDAPV3 | LDAP_DN_PRETTY, ctx );
 782
 783                 ldap_rdnfree_x( rdn, ctx );
 784
 785                 if ( rc != LDAP_SUCCESS ) {
 786                         return LDAP_INVALID_SYNTAX;
 787                 }
 788         }
 789
 790         Debug( LDAP_DEBUG_TRACE, "<<< dnPretty: <%s>\n", out->bv_val, 0, 0 );
 791
 792         return LDAP_SUCCESS;
 793 }
 794
 795
 796 int
 797 dnPrettyNormalDN(
 798         Syntax *syntax,
 799         struct berval *val,
 800         LDAPDN *dn,
 801         int flags,
 802         void *ctx )
 803 {
 804         assert( val );
 805         assert( dn );
 806
 807         Debug( LDAP_DEBUG_TRACE, ">>> dn%sDN: <%s>\n",
 808                         flags == SLAP_LDAPDN_PRETTY ? "Pretty" : "Normal",
 809                         val->bv_val, 0 );
 810
 811         if ( val->bv_len == 0 ) {
 812                 return LDAP_SUCCESS;
 813
 814         } else if ( val->bv_len > SLAP_LDAPDN_MAXLEN ) {
 815                 return LDAP_INVALID_SYNTAX;
 816
 817         } else {
 818                 int             rc;
 819
 820                 /* FIXME: should be liberal in what we accept */
 821                 rc = ldap_bv2dn_x( val, dn, LDAP_DN_FORMAT_LDAP, ctx );
 822                 if ( rc != LDAP_SUCCESS ) {
 823                         return LDAP_INVALID_SYNTAX;
 824                 }
 825
 826                 assert( strlen( val->bv_val ) == val->bv_len );
 827
 828                 /*
 829                  * Schema-aware rewrite
 830                  */
 831                 if ( LDAPDN_rewrite( *dn, flags, ctx ) != LDAP_SUCCESS ) {
 832                         ldap_dnfree_x( *dn, ctx );
 833                         *dn = NULL;
 834                         return LDAP_INVALID_SYNTAX;
 835                 }
 836         }
 837
 838         Debug( LDAP_DEBUG_TRACE, "<<< dn%sDN\n",
 839                         flags == SLAP_LDAPDN_PRETTY ? "Pretty" : "Normal",
 840                         0, 0 );
 841
 842         return LDAP_SUCCESS;
 843 }
 844
 845 /*
 846  * Combination of both dnPretty and dnNormalize
 847  */
 848 int
 849 dnPrettyNormal(
 850         Syntax *syntax,
 851         struct berval *val,
 852         struct berval *pretty,
 853         struct berval *normal,
 854         void *ctx)
 855 {
 856         Debug( LDAP_DEBUG_TRACE, ">>> dnPrettyNormal: <%s>\n", val->bv_val, 0, 0 );
 857
 858         assert( val );
 859         assert( pretty );
 860         assert( normal );
 861
 862         if ( val->bv_len == 0 ) {
 863                 ber_dupbv_x( pretty, val, ctx );
 864                 ber_dupbv_x( normal, val, ctx );
 865
 866         } else if ( val->bv_len > SLAP_LDAPDN_MAXLEN ) {
 867                 /* too big */
 868                 return LDAP_INVALID_SYNTAX;
 869
 870         } else {
 871                 LDAPDN          dn = NULL;
 872                 int             rc;
 873
 874                 pretty->bv_val = NULL;
 875                 normal->bv_val = NULL;
 876                 pretty->bv_len = 0;
 877                 normal->bv_len = 0;
 878
 879                 /* FIXME: should be liberal in what we accept */
 880                 rc = ldap_bv2dn_x( val, &dn, LDAP_DN_FORMAT_LDAP, ctx );
 881                 if ( rc != LDAP_SUCCESS ) {
 882                         return LDAP_INVALID_SYNTAX;
 883                 }
 884
 885                 assert( strlen( val->bv_val ) == val->bv_len );
 886
 887                 /*
 888                  * Schema-aware rewrite
 889                  */
 890                 if ( LDAPDN_rewrite( dn, SLAP_LDAPDN_PRETTY, ctx ) != LDAP_SUCCESS ) {
 891                         ldap_dnfree_x( dn, ctx );
 892                         return LDAP_INVALID_SYNTAX;
 893                 }
 894
 895                 rc = ldap_dn2bv_x( dn, pretty,
 896                         LDAP_DN_FORMAT_LDAPV3 | LDAP_DN_PRETTY, ctx );
 897
 898                 if ( rc != LDAP_SUCCESS ) {
 899                         ldap_dnfree_x( dn, ctx );
 900                         return LDAP_INVALID_SYNTAX;
 901                 }
 902
 903                 if ( LDAPDN_rewrite( dn, 0, ctx ) != LDAP_SUCCESS ) {
 904                         ldap_dnfree_x( dn, ctx );
 905                         ber_memfree_x( pretty->bv_val, ctx );
 906                         pretty->bv_val = NULL;
 907                         pretty->bv_len = 0;
 908                         return LDAP_INVALID_SYNTAX;
 909                 }
 910
 911                 rc = ldap_dn2bv_x( dn, normal,
 912                         LDAP_DN_FORMAT_LDAPV3 | LDAP_DN_PRETTY, ctx );
 913
 914                 ldap_dnfree_x( dn, ctx );
 915                 if ( rc != LDAP_SUCCESS ) {
 916                         ber_memfree_x( pretty->bv_val, ctx );
 917                         pretty->bv_val = NULL;
 918                         pretty->bv_len = 0;
 919                         return LDAP_INVALID_SYNTAX;
 920                 }
 921         }
 922
 923         Debug( LDAP_DEBUG_TRACE, "<<< dnPrettyNormal: <%s>, <%s>\n",
 924                 pretty->bv_val, normal->bv_val, 0 );
 925
 926         return LDAP_SUCCESS;
 927 }
 928
 929 /*
 930  * dnMatch routine
 931  */
 932 int
 933 dnMatch(
 934         int *matchp,
 935         slap_mask_t flags,
 936         Syntax *syntax,
 937         MatchingRule *mr,
 938         struct berval *value,
 939         void *assertedValue )
 940 {
 941         int match;
 942         struct berval *asserted = (struct berval *) assertedValue;
 943
 944         assert( matchp );
 945         assert( value );
 946         assert( assertedValue );
 947         assert( !BER_BVISNULL( value ) );
 948         assert( !BER_BVISNULL( asserted ) );
 949
 950         match = value->bv_len - asserted->bv_len;
 951
 952         if ( match == 0 ) {
 953                 match = memcmp( value->bv_val, asserted->bv_val,
 954                                 value->bv_len );
 955         }
 956
 957         Debug( LDAP_DEBUG_ARGS, "dnMatch %d\n\t\"%s\"\n\t\"%s\"\n",
 958                 match, value->bv_val, asserted->bv_val );
 959
 960         *matchp = match;
 961         return LDAP_SUCCESS;
 962 }
 963
 964 /*
 965  * dnRelativeMatch routine
 966  */
 967 int
 968 dnRelativeMatch(
 969         int *matchp,
 970         slap_mask_t flags,
 971         Syntax *syntax,
 972         MatchingRule *mr,
 973         struct berval *value,
 974         void *assertedValue )
 975 {
 976         int match;
 977         struct berval *asserted = (struct berval *) assertedValue;
 978
 979         assert( matchp );
 980         assert( value );
 981         assert( assertedValue );
 982         assert( !BER_BVISNULL( value ) );
 983         assert( !BER_BVISNULL( asserted ) );
 984
 985         if( mr == slap_schema.si_mr_dnSubtreeMatch ) {
 986                 if( asserted->bv_len > value->bv_len ) {
 987                         match = -1;
 988                 } else if ( asserted->bv_len == value->bv_len ) {
 989                         match = memcmp( value->bv_val, asserted->bv_val,
 990                                 value->bv_len );
 991                 } else {
 992                         if( DN_SEPARATOR(
 993                                 value->bv_val[value->bv_len - asserted->bv_len - 1] ))
 994                         {
 995                                 match = memcmp(
 996                                         &value->bv_val[value->bv_len - asserted->bv_len],
 997                                         asserted->bv_val,
 998                                         asserted->bv_len );
 999                         } else {
1000                                 return 1;
1001                         }
1002                 }
1003
1004                 *matchp = match;
1005                 return LDAP_SUCCESS;
1006
1007         }
1008
1009         if( mr == slap_schema.si_mr_dnSuperiorMatch ) {
1010                 asserted = value;
1011                 value = (struct berval *) assertedValue;
1012                 mr = slap_schema.si_mr_dnSubordinateMatch;
1013         }
1014
1015         if( mr == slap_schema.si_mr_dnSubordinateMatch ) {
1016                 if( asserted->bv_len >= value->bv_len ) {
1017                         match = -1;
1018                 } else {
1019                         if( DN_SEPARATOR(
1020                                 value->bv_val[value->bv_len - asserted->bv_len - 1] ))
1021                         {
1022                                 match = memcmp(
1023                                         &value->bv_val[value->bv_len - asserted->bv_len],
1024                                         asserted->bv_val,
1025                                         asserted->bv_len );
1026                         } else {
1027                                 return 1;
1028                         }
1029                 }
1030
1031                 *matchp = match;
1032                 return LDAP_SUCCESS;
1033         }
1034
1035         if( mr == slap_schema.si_mr_dnOneLevelMatch ) {
1036                 if( asserted->bv_len >= value->bv_len ) {
1037                         match = -1;
1038                 } else {
1039                         if( DN_SEPARATOR(
1040                                 value->bv_val[value->bv_len - asserted->bv_len - 1] ))
1041                         {
1042                                 match = memcmp(
1043                                         &value->bv_val[value->bv_len - asserted->bv_len],
1044                                         asserted->bv_val,
1045                                         asserted->bv_len );
1046
1047                                 if( !match ) {
1048                                         struct berval rdn;
1049                                         rdn.bv_val = value->bv_val;
1050                                         rdn.bv_len = value->bv_len - asserted->bv_len - 1;
1051                                         match = dnIsOneLevelRDN( &rdn ) ? 0 : 1;
1052                                 }
1053                         } else {
1054                                 return 1;
1055                         }
1056                 }
1057
1058                 *matchp = match;
1059                 return LDAP_SUCCESS;
1060         }
1061
1062         /* should not be reachable */
1063         assert( 0 );
1064         return LDAP_OTHER;
1065 }
1066
1067 int
1068 rdnMatch(
1069         int *matchp,
1070         slap_mask_t flags,
1071         Syntax *syntax,
1072         MatchingRule *mr,
1073         struct berval *value,
1074         void *assertedValue )
1075 {
1076         int match;
1077         struct berval *asserted = (struct berval *) assertedValue;
1078
1079         assert( matchp );
1080         assert( value );
1081         assert( assertedValue );
1082
1083         match = value->bv_len - asserted->bv_len;
1084
1085         if ( match == 0 ) {
1086                 match = memcmp( value->bv_val, asserted->bv_val,
1087                                 value->bv_len );
1088         }
1089
1090         Debug( LDAP_DEBUG_ARGS, "rdnMatch %d\n\t\"%s\"\n\t\"%s\"\n",
1091                 match, value->bv_val, asserted->bv_val );
1092
1093         *matchp = match;
1094         return LDAP_SUCCESS;
1095 }
1096
1097
1098 /*
1099  * dnParent - dn's parent, in-place
1100  * note: the incoming dn is assumed to be normalized/prettyfied,
1101  * so that escaped rdn/ava separators are in '\'+hexpair form
1102  */
1103 void
1104 dnParent(
1105         struct berval   *dn,
1106         struct berval   *pdn )
1107 {
1108         char    *p;
1109
1110         p = strchr( dn->bv_val, ',' );
1111
1112         /* one-level dn */
1113         if ( p == NULL ) {
1114                 pdn->bv_len = 0;
1115                 pdn->bv_val = dn->bv_val + dn->bv_len;
1116                 return;
1117         }
1118
1119         assert( DN_SEPARATOR( p[ 0 ] ) );
1120         p++;
1121
1122         assert( ATTR_LEADCHAR( p[ 0 ] ) );
1123         pdn->bv_val = p;
1124         pdn->bv_len = dn->bv_len - (p - dn->bv_val);
1125
1126         return;
1127 }
1128
1129 /*
1130  * dnRdn - dn's rdn, in-place
1131  * note: the incoming dn is assumed to be normalized/prettyfied,
1132  * so that escaped rdn/ava separators are in '\'+hexpair form
1133  */
1134 void
1135 dnRdn(
1136         struct berval   *dn,
1137         struct berval   *rdn )
1138 {
1139         char    *p;
1140
1141         *rdn = *dn;
1142         p = strchr( dn->bv_val, ',' );
1143
1144         /* one-level dn */
1145         if ( p == NULL ) {
1146                 return;
1147         }
1148
1149         assert( DN_SEPARATOR( p[ 0 ] ) );
1150         assert( ATTR_LEADCHAR( p[ 1 ] ) );
1151         rdn->bv_len = p - dn->bv_val;
1152
1153         return;
1154 }
1155
1156 int
1157 dnExtractRdn(
1158         struct berval   *dn,
1159         struct berval   *rdn,
1160         void *ctx )
1161 {
1162         LDAPRDN         tmpRDN;
1163         const char      *p;
1164         int             rc;
1165
1166         assert( dn );
1167         assert( rdn );
1168
1169         if( dn->bv_len == 0 ) {
1170                 return LDAP_OTHER;
1171         }
1172
1173         rc = ldap_bv2rdn_x( dn, &tmpRDN, (char **)&p, LDAP_DN_FORMAT_LDAP, ctx );
1174         if ( rc != LDAP_SUCCESS ) {
1175                 return rc;
1176         }
1177
1178         rc = ldap_rdn2bv_x( tmpRDN, rdn, LDAP_DN_FORMAT_LDAPV3 | LDAP_DN_PRETTY,
1179                 ctx );
1180
1181         ldap_rdnfree_x( tmpRDN, ctx );
1182         return rc;
1183 }
1184
1185 /*
1186  * We can assume the input is a prettied or normalized DN
1187  */
1188 int
1189 dn_rdnlen(
1190         Backend         *be,
1191         struct berval   *dn_in )
1192 {
1193         const char      *p;
1194
1195         assert( dn_in );
1196
1197         if ( dn_in == NULL ) {
1198                 return 0;
1199         }
1200
1201         if ( !dn_in->bv_len ) {
1202                 return 0;
1203         }
1204
1205         if ( be != NULL && be_issuffix( be, dn_in ) ) {
1206                 return 0;
1207         }
1208
1209         p = strchr( dn_in->bv_val, ',' );
1210
1211         return p ? p - dn_in->bv_val : dn_in->bv_len;
1212 }
1213
1214
1215 /* rdnValidate:
1216  *
1217  * LDAP_SUCCESS if rdn is a legal rdn;
1218  * LDAP_INVALID_SYNTAX otherwise (including a sequence of rdns)
1219  */
1220 int
1221 rdn_validate( struct berval *rdn )
1222 {
1223 #if 1
1224         /* Major cheat!
1225          * input is a pretty or normalized DN
1226          * hence, we can just search for ','
1227          */
1228         if( rdn == NULL || rdn->bv_len == 0 ||
1229                 rdn->bv_len > SLAP_LDAPDN_MAXLEN )
1230         {
1231                 return LDAP_INVALID_SYNTAX;
1232         }
1233         return strchr( rdn->bv_val, ',' ) == NULL
1234                 ? LDAP_SUCCESS : LDAP_INVALID_SYNTAX;
1235
1236 #else
1237         LDAPRDN         *RDN, **DN[ 2 ] = { &RDN, NULL };
1238         const char      *p;
1239         int             rc;
1240
1241         /*
1242          * must be non-empty
1243          */
1244         if ( rdn == NULL || rdn == '\0' ) {
1245                 return 0;
1246         }
1247
1248         /*
1249          * must be parsable
1250          */
1251         rc = ldap_bv2rdn( rdn, &RDN, (char **)&p, LDAP_DN_FORMAT_LDAP );
1252         if ( rc != LDAP_SUCCESS ) {
1253                 return 0;
1254         }
1255
1256         /*
1257          * Must be one-level
1258          */
1259         if ( p[ 0 ] != '\0' ) {
1260                 return 0;
1261         }
1262
1263         /*
1264          * Schema-aware validate
1265          */
1266         if ( rc == LDAP_SUCCESS ) {
1267                 rc = LDAPDN_validate( DN );
1268         }
1269         ldap_rdnfree( RDN );
1270
1271         /*
1272          * Must validate (there's a repeated parsing ...)
1273          */
1274         return ( rc == LDAP_SUCCESS );
1275 #endif
1276 }
1277
1278
1279 /* build_new_dn:
1280  *
1281  * Used by ldbm/bdb2 back_modrdn to create the new dn of entries being
1282  * renamed.
1283  *
1284  * new_dn = parent (p_dn) + separator + rdn (newrdn) + null.
1285  */
1286
1287 void
1288 build_new_dn( struct berval * new_dn,
1289         struct berval * parent_dn,
1290         struct berval * newrdn,
1291         void *memctx )
1292 {
1293         char *ptr;
1294
1295         if ( parent_dn == NULL || parent_dn->bv_len == 0 ) {
1296                 ber_dupbv( new_dn, newrdn );
1297                 return;
1298         }
1299
1300         new_dn->bv_len = parent_dn->bv_len + newrdn->bv_len + 1;
1301         new_dn->bv_val = (char *) slap_sl_malloc( new_dn->bv_len + 1, memctx );
1302
1303         ptr = lutil_strcopy( new_dn->bv_val, newrdn->bv_val );
1304         *ptr++ = ',';
1305         strcpy( ptr, parent_dn->bv_val );
1306 }
1307
1308
1309 /*
1310  * dnIsSuffix - tells whether suffix is a suffix of dn.
1311  * Both dn and suffix must be normalized.
1312  */
1313 int
1314 dnIsSuffix(
1315         const struct berval *dn,
1316         const struct berval *suffix )
1317 {
1318         int     d = dn->bv_len - suffix->bv_len;
1319
1320         assert( dn );
1321         assert( suffix );
1322
1323         /* empty suffix matches any dn */
1324         if ( suffix->bv_len == 0 ) {
1325                 return 1;
1326         }
1327
1328         /* suffix longer than dn */
1329         if ( d < 0 ) {
1330                 return 0;
1331         }
1332
1333         /* no rdn separator or escaped rdn separator */
1334         if ( d > 1 && !DN_SEPARATOR( dn->bv_val[ d - 1 ] ) ) {
1335                 return 0;
1336         }
1337
1338         /* no possible match or malformed dn */
1339         if ( d == 1 ) {
1340                 return 0;
1341         }
1342
1343         /* compare */
1344         return( strcmp( dn->bv_val + d, suffix->bv_val ) == 0 );
1345 }
1346
1347 int
1348 dnIsOneLevelRDN( struct berval *rdn )
1349 {
1350         ber_len_t       len = rdn->bv_len;
1351         for ( ; len--; ) {
1352                 if ( DN_SEPARATOR( rdn->bv_val[ len ] ) ) {
1353                         return 0;
1354                 }
1355         }
1356
1357         return 1;
1358 }
1359
1360 static SLAP_CERT_MAP_FN *DNX509PeerNormalizeCertMap = NULL;
1361
1362 int register_certificate_map_function(SLAP_CERT_MAP_FN *fn)
1363 {
1364 #ifdef HAVE_TLS
1365         if ( DNX509PeerNormalizeCertMap == NULL ) {
1366                 DNX509PeerNormalizeCertMap = fn;
1367                 return 0;
1368         }
1369 #endif
1370
1371         return -1;
1372 }
1373
1374 #ifdef HAVE_TLS
1375 /*
1376  * Convert an X.509 DN into a normalized LDAP DN
1377  */
1378 int
1379 dnX509normalize( void *x509_name, struct berval *out )
1380 {
1381         /* Invoke the LDAP library's converter with our schema-rewriter */
1382         int rc = ldap_X509dn2bv( x509_name, out, LDAPDN_rewrite, 0 );
1383
1384         Debug( LDAP_DEBUG_TRACE,
1385                 "dnX509Normalize: <%s>\n", out->bv_val, 0, 0 );
1386
1387         return rc;
1388 }
1389
1390 /*
1391  * Get the TLS session's peer's DN into a normalized LDAP DN
1392  */
1393 int
1394 dnX509peerNormalize( void *ssl, struct berval *dn )
1395 {
1396         int rc = LDAP_INVALID_CREDENTIALS;
1397
1398         if ( DNX509PeerNormalizeCertMap != NULL )
1399                 rc = (*DNX509PeerNormalizeCertMap)( ssl, dn );
1400
1401         if ( rc != LDAP_SUCCESS ) {
1402                 rc = ldap_pvt_tls_get_peer_dn( ssl, dn,
1403                         (LDAPDN_rewrite_dummy *)LDAPDN_rewrite, 0 );
1404         }
1405
1406         return rc;
1407 }
1408 #endif