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

   1 /* dn.c - routines for dealing with distinguished names */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
   5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   6  */
   7
   8 #include "portable.h"
   9
  10 #include <stdio.h>
  11
  12 #include <ac/ctype.h>
  13 #include <ac/socket.h>
  14 #include <ac/string.h>
  15 #include <ac/time.h>
  16
  17 #include "slap.h"
  18 #include "ldap_pvt.h" /* must be after slap.h, to get ldap_bv2dn_x() & co */
  19 #include "lutil.h"
  20
  21 /*
  22  * The DN syntax-related functions take advantage of the dn representation
  23  * handling functions ldap_str2dn/ldap_dn2str.  The latter are not schema-
  24  * aware, so the attributes and their values need be validated (and possibly
  25  * normalized).  In the current implementation the required validation/nor-
  26  * malization/"pretty"ing are done on newly created DN structural represen-
  27  * tations; however the idea is to move towards DN handling in structural
  28  * representation instead of the current string representation.  To this
  29  * purpose, we need to do only the required operations and keep track of
  30  * what has been done to minimize their impact on performances.
  31  *
  32  * Developers are strongly encouraged to use this feature, to speed-up
  33  * its stabilization.
  34  */
  35
  36 #define AVA_PRIVATE( ava ) ( ( AttributeDescription * )(ava)->la_private )
  37
  38 /*
  39  * In-place, schema-aware validation of the
  40  * structural representation of a distinguished name.
  41  */
  42 static int
  43 LDAPDN_validate( LDAPDN dn )
  44 {
  45         int             iRDN;
  46         int             rc;
  47
  48         assert( dn );
  49
  50         for ( iRDN = 0; dn[ iRDN ]; iRDN++ ) {
  51                 LDAPRDN         rdn = dn[ iRDN ];
  52                 int             iAVA;
  53
  54                 assert( rdn );
  55
  56                 for ( iAVA = 0; rdn[ iAVA ]; iAVA++ ) {
  57                         LDAPAVA                 *ava = rdn[ iAVA ];
  58                         AttributeDescription    *ad;
  59                         slap_syntax_validate_func *validate = NULL;
  60
  61                         assert( ava );
  62
  63                         if ( ( ad = AVA_PRIVATE( ava ) ) == NULL ) {
  64                                 const char      *text = NULL;
  65
  66                                 rc = slap_bv2ad( &ava->la_attr, &ad, &text );
  67                                 if ( rc != LDAP_SUCCESS ) {
  68                                         return LDAP_INVALID_SYNTAX;
  69                                 }
  70
  71                                 ava->la_private = ( void * )ad;
  72                         }
  73
  74                         /*
  75                          * Replace attr oid/name with the canonical name
  76                          */
  77                         ava->la_attr = ad->ad_cname;
  78
  79                         validate = ad->ad_type->sat_syntax->ssyn_validate;
  80
  81                         if ( validate ) {
  82                                 /*
  83                                  * validate value by validate function
  84                                  */
  85                                 rc = ( *validate )( ad->ad_type->sat_syntax,
  86                                         &ava->la_value );
  87
  88                                 if ( rc != LDAP_SUCCESS ) {
  89                                         return LDAP_INVALID_SYNTAX;
  90                                 }
  91                         }
  92                 }
  93         }
  94
  95         return LDAP_SUCCESS;
  96 }
  97
  98 /*
  99  * dn validate routine
 100  */
 101 int
 102 dnValidate(
 103         Syntax *syntax,
 104         struct berval *in )
 105 {
 106         int             rc;
 107         LDAPDN          dn = NULL;
 108
 109         assert( in );
 110
 111         if ( in->bv_len == 0 ) {
 112                 return LDAP_SUCCESS;
 113
 114         } else if ( in->bv_len > SLAP_LDAPDN_MAXLEN ) {
 115                 return LDAP_INVALID_SYNTAX;
 116         }
 117
 118         rc = ldap_bv2dn( in, &dn, LDAP_DN_FORMAT_LDAP );
 119         if ( rc != LDAP_SUCCESS ) {
 120                 return LDAP_INVALID_SYNTAX;
 121         }
 122
 123         assert( strlen( in->bv_val ) == in->bv_len );
 124
 125         /*
 126          * Schema-aware validate
 127          */
 128         rc = LDAPDN_validate( dn );
 129         ldap_dnfree( dn );
 130
 131         if ( rc != LDAP_SUCCESS ) {
 132                 return LDAP_INVALID_SYNTAX;
 133         }
 134
 135         return LDAP_SUCCESS;
 136 }
 137
 138 /*
 139  * AVA sorting inside a RDN
 140  *
 141  * rule: sort attributeTypes in alphabetical order; in case of multiple
 142  * occurrences of the same attributeType, sort values in byte order
 143  * (use memcmp, which implies alphabetical order in case of IA5 value;
 144  * this should guarantee the repeatability of the operation).
 145  *
 146  * Note: the sorting can be slightly improved by sorting first
 147  * by attribute type length, then by alphabetical order.
 148  *
 149  * uses a linear search; should be fine since the number of AVAs in
 150  * a RDN should be limited.
 151  */
 152 static void
 153 AVA_Sort( LDAPRDN rdn, int iAVA )
 154 {
 155         int             i;
 156         LDAPAVA         *ava_in = rdn[ iAVA ];
 157
 158         assert( rdn );
 159         assert( ava_in );
 160
 161         for ( i = 0; i < iAVA; i++ ) {
 162                 LDAPAVA         *ava = rdn[ i ];
 163                 int             a, j;
 164
 165                 assert( ava );
 166
 167                 a = strcmp( ava_in->la_attr.bv_val, ava->la_attr.bv_val );
 168
 169                 if ( a > 0 ) {
 170                         break;
 171                 }
 172
 173                 while ( a == 0 ) {
 174                         int             v, d;
 175
 176                         d = ava_in->la_value.bv_len - ava->la_value.bv_len;
 177
 178                         v = memcmp( ava_in->la_value.bv_val,
 179                                         ava->la_value.bv_val,
 180                                         d <= 0 ? ava_in->la_value.bv_len
 181                                                 : ava->la_value.bv_len );
 182
 183                         if ( v == 0 && d != 0 ) {
 184                                 v = d;
 185                         }
 186
 187                         if ( v <= 0 ) {
 188                                 /*
 189                                  * got it!
 190                                  */
 191                                 break;
 192                         }
 193
 194                         if ( ++i == iAVA ) {
 195                                 /*
 196                                  * already sorted
 197                                  */
 198                                 return;
 199                         }
 200
 201                         ava = rdn[ i ];
 202                         a = strcmp( ava_in->la_attr.bv_val,
 203                                         ava->la_attr.bv_val );
 204                 }
 205
 206                 /*
 207                  * move ahead
 208                  */
 209                 for ( j = iAVA; j > i; j-- ) {
 210                         rdn[ j ] = rdn[ j - 1 ];
 211                 }
 212                 rdn[ i ] = ava_in;
 213
 214                 return;
 215         }
 216 }
 217
 218 /*
 219  * In-place, schema-aware normalization / "pretty"ing of the
 220  * structural representation of a distinguished name.
 221  */
 222 static int
 223 LDAPDN_rewrite( LDAPDN dn, unsigned flags, void *ctx )
 224 {
 225         int             iRDN;
 226         int             rc;
 227
 228         assert( dn );
 229
 230         for ( iRDN = 0; dn[ iRDN ]; iRDN++ ) {
 231                 LDAPRDN         rdn = dn[ iRDN ];
 232                 int             iAVA;
 233
 234                 assert( rdn );
 235
 236                 for ( iAVA = 0; rdn[ iAVA ]; iAVA++ ) {
 237                         LDAPAVA                 *ava = rdn[ iAVA ];
 238                         AttributeDescription    *ad;
 239                         slap_syntax_validate_func *validf = NULL;
 240                         slap_mr_normalize_func *normf = NULL;
 241                         slap_syntax_transform_func *transf = NULL;
 242                         MatchingRule *mr = NULL;
 243                         struct berval           bv = { 0, NULL };
 244                         int                     do_sort = 0;
 245
 246                         assert( ava );
 247
 248                         if ( ( ad = AVA_PRIVATE( ava ) ) == NULL ) {
 249                                 const char      *text = NULL;
 250
 251                                 rc = slap_bv2ad( &ava->la_attr, &ad, &text );
 252                                 if ( rc != LDAP_SUCCESS ) {
 253                                         return LDAP_INVALID_SYNTAX;
 254                                 }
 255
 256                                 ava->la_private = ( void * )ad;
 257                                 do_sort = 1;
 258                         }
 259
 260                         /*
 261                          * Replace attr oid/name with the canonical name
 262                          */
 263                         ava->la_attr = ad->ad_cname;
 264
 265                         if( ava->la_flags & LDAP_AVA_BINARY ) {
 266                                 if( ava->la_value.bv_len == 0 ) {
 267                                         /* BER encoding is empty */
 268                                         return LDAP_INVALID_SYNTAX;
 269                                 }
 270
 271                                 /* AVA is binary encoded, don't muck with it */
 272                         } else if( flags & SLAP_LDAPDN_PRETTY ) {
 273                                 transf = ad->ad_type->sat_syntax->ssyn_pretty;
 274                                 if( !transf ) {
 275                                         validf = ad->ad_type->sat_syntax->ssyn_validate;
 276                                 }
 277                         } else { /* normalization */
 278                                 validf = ad->ad_type->sat_syntax->ssyn_validate;
 279                                 mr = ad->ad_type->sat_equality;
 280                                 if( mr ) normf = mr->smr_normalize;
 281                         }
 282
 283                         if ( validf ) {
 284                                 /* validate value before normalization */
 285                                 rc = ( *validf )( ad->ad_type->sat_syntax,
 286                                         ava->la_value.bv_len
 287                                                 ? &ava->la_value
 288                                                 : (struct berval *) &slap_empty_bv );
 289
 290                                 if ( rc != LDAP_SUCCESS ) {
 291                                         return LDAP_INVALID_SYNTAX;
 292                                 }
 293                         }
 294
 295                         if ( transf ) {
 296                                 /*
 297                                  * transform value by pretty function
 298                                  *      if value is empty, use empty_bv
 299                                  */
 300                                 rc = ( *transf )( ad->ad_type->sat_syntax,
 301                                         ava->la_value.bv_len
 302                                                 ? &ava->la_value
 303                                                 : (struct berval *) &slap_empty_bv,
 304                                         &bv, ctx );
 305
 306                                 if ( rc != LDAP_SUCCESS ) {
 307                                         return LDAP_INVALID_SYNTAX;
 308                                 }
 309                         }
 310
 311                         if ( normf ) {
 312                                 /*
 313                                  * normalize value
 314                                  *      if value is empty, use empty_bv
 315                                  */
 316                                 rc = ( *normf )(
 317                                         SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,
 318                                         ad->ad_type->sat_syntax,
 319                                         mr,
 320                                         ava->la_value.bv_len
 321                                                 ? &ava->la_value
 322                                                 : (struct berval *) &slap_empty_bv,
 323                                         &bv, ctx );
 324
 325                                 if ( rc != LDAP_SUCCESS ) {
 326                                         return LDAP_INVALID_SYNTAX;
 327                                 }
 328                         }
 329
 330
 331                         if( bv.bv_val ) {
 332                                 if ( ava->la_flags & LDAP_AVA_FREE_VALUE )
 333                                         ber_memfree_x( ava->la_value.bv_val, ctx );
 334                                 ava->la_value = bv;
 335                                 ava->la_flags |= LDAP_AVA_FREE_VALUE;
 336                         }
 337
 338                         if( do_sort ) AVA_Sort( rdn, iAVA );
 339                 }
 340         }
 341
 342         return LDAP_SUCCESS;
 343 }
 344
 345 int
 346 dnNormalize(
 347     slap_mask_t use,
 348     Syntax *syntax,
 349     MatchingRule *mr,
 350     struct berval *val,
 351     struct berval *out,
 352     void *ctx)
 353 {
 354         assert( val );
 355         assert( out );
 356
 357         Debug( LDAP_DEBUG_TRACE, ">>> dnNormalize: <%s>\n", val->bv_val, 0, 0 );
 358
 359         if ( val->bv_len != 0 ) {
 360                 LDAPDN          dn = NULL;
 361                 int             rc;
 362
 363                 /*
 364                  * Go to structural representation
 365                  */
 366                 rc = ldap_bv2dn_x( val, &dn, LDAP_DN_FORMAT_LDAP, ctx );
 367                 if ( rc != LDAP_SUCCESS ) {
 368                         return LDAP_INVALID_SYNTAX;
 369                 }
 370
 371                 assert( strlen( val->bv_val ) == val->bv_len );
 372
 373                 /*
 374                  * Schema-aware rewrite
 375                  */
 376                 if ( LDAPDN_rewrite( dn, 0, ctx ) != LDAP_SUCCESS ) {
 377                         ldap_dnfree_x( dn, ctx );
 378                         return LDAP_INVALID_SYNTAX;
 379                 }
 380
 381                 /*
 382                  * Back to string representation
 383                  */
 384                 rc = ldap_dn2bv_x( dn, out,
 385                         LDAP_DN_FORMAT_LDAPV3 | LDAP_DN_PRETTY, ctx );
 386
 387                 ldap_dnfree_x( dn, ctx );
 388
 389                 if ( rc != LDAP_SUCCESS ) {
 390                         return LDAP_INVALID_SYNTAX;
 391                 }
 392         } else {
 393                 ber_dupbv_x( out, val, ctx );
 394         }
 395
 396         Debug( LDAP_DEBUG_TRACE, "<<< dnNormalize: <%s>\n", out->bv_val, 0, 0 );
 397
 398         return LDAP_SUCCESS;
 399 }
 400
 401 int
 402 dnPretty(
 403         Syntax *syntax,
 404         struct berval *val,
 405         struct berval *out,
 406         void *ctx)
 407 {
 408         assert( val );
 409         assert( out );
 410
 411 #ifdef NEW_LOGGING
 412         LDAP_LOG( OPERATION, ARGS, ">>> dnPretty: <%s>\n", val->bv_val, 0, 0 );
 413 #else
 414         Debug( LDAP_DEBUG_TRACE, ">>> dnPretty: <%s>\n", val->bv_val, 0, 0 );
 415 #endif
 416
 417         if ( val->bv_len == 0 ) {
 418                 ber_dupbv_x( out, val, ctx );
 419
 420         } else if ( val->bv_len > SLAP_LDAPDN_MAXLEN ) {
 421                 return LDAP_INVALID_SYNTAX;
 422
 423         } else {
 424                 LDAPDN          dn = NULL;
 425                 int             rc;
 426
 427                 /* FIXME: should be liberal in what we accept */
 428                 rc = ldap_bv2dn_x( val, &dn, LDAP_DN_FORMAT_LDAP, ctx );
 429                 if ( rc != LDAP_SUCCESS ) {
 430                         return LDAP_INVALID_SYNTAX;
 431                 }
 432
 433                 assert( strlen( val->bv_val ) == val->bv_len );
 434
 435                 /*
 436                  * Schema-aware rewrite
 437                  */
 438                 if ( LDAPDN_rewrite( dn, SLAP_LDAPDN_PRETTY, ctx ) != LDAP_SUCCESS ) {
 439                         ldap_dnfree_x( dn, ctx );
 440                         return LDAP_INVALID_SYNTAX;
 441                 }
 442
 443                 /* FIXME: not sure why the default isn't pretty */
 444                 /* RE: the default is the form that is used as
 445                  * an internal representation; the pretty form
 446                  * is a variant */
 447                 rc = ldap_dn2bv_x( dn, out,
 448                         LDAP_DN_FORMAT_LDAPV3 | LDAP_DN_PRETTY, ctx );
 449
 450                 ldap_dnfree_x( dn, ctx );
 451
 452                 if ( rc != LDAP_SUCCESS ) {
 453                         return LDAP_INVALID_SYNTAX;
 454                 }
 455         }
 456
 457 #ifdef NEW_LOGGING
 458         LDAP_LOG( OPERATION, ARGS, "<<< dnPretty: <%s>\n", out->bv_val, 0, 0 );
 459 #else
 460         Debug( LDAP_DEBUG_TRACE, "<<< dnPretty: <%s>\n", out->bv_val, 0, 0 );
 461 #endif
 462
 463         return LDAP_SUCCESS;
 464 }
 465
 466 int
 467 dnPrettyNormalDN(
 468         Syntax *syntax,
 469         struct berval *val,
 470         LDAPDN *dn,
 471         int flags,
 472         void *ctx )
 473 {
 474         assert( val );
 475         assert( dn );
 476
 477 #ifdef NEW_LOGGING
 478         LDAP_LOG( OPERATION, ARGS, ">>> dn%sDN: <%s>\n",
 479                         flags == SLAP_LDAPDN_PRETTY ? "Pretty" : "Normal",
 480                         val->bv_val, 0 );
 481 #else
 482         Debug( LDAP_DEBUG_TRACE, ">>> dn%sDN: <%s>\n",
 483                         flags == SLAP_LDAPDN_PRETTY ? "Pretty" : "Normal",
 484                         val->bv_val, 0 );
 485 #endif
 486
 487         if ( val->bv_len == 0 ) {
 488                 return LDAP_SUCCESS;
 489
 490         } else if ( val->bv_len > SLAP_LDAPDN_MAXLEN ) {
 491                 return LDAP_INVALID_SYNTAX;
 492
 493         } else {
 494                 int             rc;
 495
 496                 /* FIXME: should be liberal in what we accept */
 497                 rc = ldap_bv2dn_x( val, dn, LDAP_DN_FORMAT_LDAP, ctx );
 498                 if ( rc != LDAP_SUCCESS ) {
 499                         return LDAP_INVALID_SYNTAX;
 500                 }
 501
 502                 assert( strlen( val->bv_val ) == val->bv_len );
 503
 504                 /*
 505                  * Schema-aware rewrite
 506                  */
 507                 if ( LDAPDN_rewrite( *dn, flags, ctx ) != LDAP_SUCCESS ) {
 508                         ldap_dnfree_x( *dn, ctx );
 509                         *dn = NULL;
 510                         return LDAP_INVALID_SYNTAX;
 511                 }
 512         }
 513
 514         Debug( LDAP_DEBUG_TRACE, "<<< dn%sDN\n",
 515                         flags == SLAP_LDAPDN_PRETTY ? "Pretty" : "Normal",
 516                         0, 0 );
 517
 518         return LDAP_SUCCESS;
 519 }
 520
 521 /*
 522  * Combination of both dnPretty and dnNormalize
 523  */
 524 int
 525 dnPrettyNormal(
 526         Syntax *syntax,
 527         struct berval *val,
 528         struct berval *pretty,
 529         struct berval *normal,
 530         void *ctx)
 531 {
 532 #ifdef NEW_LOGGING
 533         LDAP_LOG ( OPERATION, ENTRY, ">>> dnPrettyNormal: <%s>\n", val->bv_val, 0, 0 );
 534 #else
 535         Debug( LDAP_DEBUG_TRACE, ">>> dnPrettyNormal: <%s>\n", val->bv_val, 0, 0 );
 536 #endif
 537
 538         assert( val );
 539         assert( pretty );
 540         assert( normal );
 541
 542         if ( val->bv_len == 0 ) {
 543                 ber_dupbv_x( pretty, val, ctx );
 544                 ber_dupbv_x( normal, val, ctx );
 545
 546         } else if ( val->bv_len > SLAP_LDAPDN_MAXLEN ) {
 547                 /* too big */
 548                 return LDAP_INVALID_SYNTAX;
 549
 550         } else {
 551                 LDAPDN          dn = NULL;
 552                 int             rc;
 553
 554                 pretty->bv_val = NULL;
 555                 normal->bv_val = NULL;
 556                 pretty->bv_len = 0;
 557                 normal->bv_len = 0;
 558
 559                 /* FIXME: should be liberal in what we accept */
 560                 rc = ldap_bv2dn_x( val, &dn, LDAP_DN_FORMAT_LDAP, ctx );
 561                 if ( rc != LDAP_SUCCESS ) {
 562                         return LDAP_INVALID_SYNTAX;
 563                 }
 564
 565                 assert( strlen( val->bv_val ) == val->bv_len );
 566
 567                 /*
 568                  * Schema-aware rewrite
 569                  */
 570                 if ( LDAPDN_rewrite( dn, SLAP_LDAPDN_PRETTY, ctx ) != LDAP_SUCCESS ) {
 571                         ldap_dnfree_x( dn, ctx );
 572                         return LDAP_INVALID_SYNTAX;
 573                 }
 574
 575                 rc = ldap_dn2bv_x( dn, pretty,
 576                         LDAP_DN_FORMAT_LDAPV3 | LDAP_DN_PRETTY, ctx );
 577
 578                 if ( rc != LDAP_SUCCESS ) {
 579                         ldap_dnfree_x( dn, ctx );
 580                         return LDAP_INVALID_SYNTAX;
 581                 }
 582
 583                 if ( LDAPDN_rewrite( dn, 0, ctx ) != LDAP_SUCCESS ) {
 584                         ldap_dnfree_x( dn, ctx );
 585                         ber_memfree_x( pretty->bv_val, ctx );
 586                         pretty->bv_val = NULL;
 587                         pretty->bv_len = 0;
 588                         return LDAP_INVALID_SYNTAX;
 589                 }
 590
 591                 rc = ldap_dn2bv_x( dn, normal,
 592                         LDAP_DN_FORMAT_LDAPV3 | LDAP_DN_PRETTY, ctx );
 593
 594                 ldap_dnfree_x( dn, ctx );
 595                 if ( rc != LDAP_SUCCESS ) {
 596                         ber_memfree_x( pretty->bv_val, ctx );
 597                         pretty->bv_val = NULL;
 598                         pretty->bv_len = 0;
 599                         return LDAP_INVALID_SYNTAX;
 600                 }
 601         }
 602
 603 #ifdef NEW_LOGGING
 604         LDAP_LOG (OPERATION, RESULTS, "<<< dnPrettyNormal: <%s>, <%s>\n",
 605                 pretty->bv_val, normal->bv_val, 0  );
 606 #else
 607         Debug( LDAP_DEBUG_TRACE, "<<< dnPrettyNormal: <%s>, <%s>\n",
 608                 pretty->bv_val, normal->bv_val, 0 );
 609 #endif
 610
 611         return LDAP_SUCCESS;
 612 }
 613
 614 /*
 615  * dnMatch routine
 616  */
 617 int
 618 dnMatch(
 619         int *matchp,
 620         slap_mask_t flags,
 621         Syntax *syntax,
 622         MatchingRule *mr,
 623         struct berval *value,
 624         void *assertedValue )
 625 {
 626         int match;
 627         struct berval *asserted = (struct berval *) assertedValue;
 628
 629         assert( matchp );
 630         assert( value );
 631         assert( assertedValue );
 632
 633         match = value->bv_len - asserted->bv_len;
 634
 635         if ( match == 0 ) {
 636                 match = memcmp( value->bv_val, asserted->bv_val,
 637                                 value->bv_len );
 638         }
 639
 640 #ifdef NEW_LOGGING
 641         LDAP_LOG( CONFIG, ENTRY, "dnMatch: %d\n    %s\n    %s\n",
 642                 match, value->bv_val, asserted->bv_val  );
 643 #else
 644         Debug( LDAP_DEBUG_ARGS, "dnMatch %d\n\t\"%s\"\n\t\"%s\"\n",
 645                 match, value->bv_val, asserted->bv_val );
 646 #endif
 647
 648         *matchp = match;
 649         return( LDAP_SUCCESS );
 650 }
 651
 652 /*
 653  * dnParent - dn's parent, in-place
 654  *
 655  * note: the incoming dn is assumed to be normalized/prettyfied,
 656  * so that escaped rdn/ava separators are in '\'+hexpair form
 657  */
 658 void
 659 dnParent(
 660         struct berval   *dn,
 661         struct berval   *pdn )
 662 {
 663         char    *p;
 664
 665         p = strchr( dn->bv_val, ',' );
 666
 667         /* one-level dn */
 668         if ( p == NULL ) {
 669                 pdn->bv_len = 0;
 670                 pdn->bv_val = dn->bv_val + dn->bv_len;
 671                 return;
 672         }
 673
 674         assert( DN_SEPARATOR( p[ 0 ] ) );
 675         p++;
 676
 677         assert( ATTR_LEADCHAR( p[ 0 ] ) );
 678         pdn->bv_val = p;
 679         pdn->bv_len = dn->bv_len - (p - dn->bv_val);
 680
 681         return;
 682 }
 683
 684 int
 685 dnExtractRdn(
 686         struct berval   *dn,
 687         struct berval   *rdn,
 688         void *ctx )
 689 {
 690         LDAPRDN         tmpRDN;
 691         const char      *p;
 692         int             rc;
 693
 694         assert( dn );
 695         assert( rdn );
 696
 697         if( dn->bv_len == 0 ) {
 698                 return LDAP_OTHER;
 699         }
 700
 701         rc = ldap_bv2rdn_x( dn, &tmpRDN, (char **)&p, LDAP_DN_FORMAT_LDAP, ctx );
 702         if ( rc != LDAP_SUCCESS ) {
 703                 return rc;
 704         }
 705
 706         rc = ldap_rdn2bv_x( tmpRDN, rdn, LDAP_DN_FORMAT_LDAPV3 | LDAP_DN_PRETTY, ctx );
 707
 708         ldap_rdnfree_x( tmpRDN, ctx );
 709         if ( rc != LDAP_SUCCESS ) {
 710                 return rc;
 711         }
 712
 713         return LDAP_SUCCESS;
 714 }
 715
 716 /*
 717  * We can assume the input is a prettied or normalized DN
 718  */
 719 int
 720 dn_rdnlen(
 721         Backend         *be,
 722         struct berval   *dn_in )
 723 {
 724         const char      *p;
 725
 726         assert( dn_in );
 727
 728         if ( dn_in == NULL ) {
 729                 return 0;
 730         }
 731
 732         if ( !dn_in->bv_len ) {
 733                 return 0;
 734         }
 735
 736         if ( be != NULL && be_issuffix( be, dn_in ) ) {
 737                 return 0;
 738         }
 739
 740         p = strchr( dn_in->bv_val, ',' );
 741
 742         return p ? p - dn_in->bv_val : dn_in->bv_len;
 743 }
 744
 745
 746 /* rdnValidate:
 747  *
 748  * LDAP_SUCCESS if rdn is a legal rdn;
 749  * LDAP_INVALID_SYNTAX otherwise (including a sequence of rdns)
 750  */
 751 int
 752 rdnValidate( struct berval *rdn )
 753 {
 754 #if 1
 755         /* Major cheat!
 756          * input is a pretty or normalized DN
 757          * hence, we can just search for ','
 758          */
 759         if( rdn == NULL || rdn->bv_len == 0 ||
 760                 rdn->bv_len > SLAP_LDAPDN_MAXLEN )
 761         {
 762                 return LDAP_INVALID_SYNTAX;
 763         }
 764
 765         return strchr( rdn->bv_val, ',' ) == NULL
 766                 ? LDAP_SUCCESS : LDAP_INVALID_SYNTAX;
 767
 768 #else
 769         LDAPRDN         *RDN, **DN[ 2 ] = { &RDN, NULL };
 770         const char      *p;
 771         int             rc;
 772
 773         /*
 774          * must be non-empty
 775          */
 776         if ( rdn == NULL || rdn == '\0' ) {
 777                 return 0;
 778         }
 779
 780         /*
 781          * must be parsable
 782          */
 783         rc = ldap_bv2rdn( rdn, &RDN, (char **)&p, LDAP_DN_FORMAT_LDAP );
 784         if ( rc != LDAP_SUCCESS ) {
 785                 return 0;
 786         }
 787
 788         /*
 789          * Must be one-level
 790          */
 791         if ( p[ 0 ] != '\0' ) {
 792                 return 0;
 793         }
 794
 795         /*
 796          * Schema-aware validate
 797          */
 798         if ( rc == LDAP_SUCCESS ) {
 799                 rc = LDAPDN_validate( DN );
 800         }
 801         ldap_rdnfree( RDN );
 802
 803         /*
 804          * Must validate (there's a repeated parsing ...)
 805          */
 806         return ( rc == LDAP_SUCCESS );
 807 #endif
 808 }
 809
 810
 811 /* build_new_dn:
 812  *
 813  * Used by ldbm/bdb2 back_modrdn to create the new dn of entries being
 814  * renamed.
 815  *
 816  * new_dn = parent (p_dn) + separator + rdn (newrdn) + null.
 817  */
 818
 819 void
 820 build_new_dn( struct berval * new_dn,
 821         struct berval * parent_dn,
 822         struct berval * newrdn,
 823         void *memctx )
 824 {
 825         char *ptr;
 826
 827         if ( parent_dn == NULL ) {
 828                 ber_dupbv( new_dn, newrdn );
 829                 return;
 830         }
 831
 832         new_dn->bv_len = parent_dn->bv_len + newrdn->bv_len + 1;
 833         new_dn->bv_val = (char *) sl_malloc( new_dn->bv_len + 1, memctx );
 834
 835         ptr = lutil_strcopy( new_dn->bv_val, newrdn->bv_val );
 836         *ptr++ = ',';
 837         strcpy( ptr, parent_dn->bv_val );
 838 }
 839
 840
 841 /*
 842  * dnIsSuffix - tells whether suffix is a suffix of dn.
 843  * Both dn and suffix must be normalized.
 844  */
 845 int
 846 dnIsSuffix(
 847         const struct berval *dn,
 848         const struct berval *suffix )
 849 {
 850         int     d = dn->bv_len - suffix->bv_len;
 851
 852         assert( dn );
 853         assert( suffix );
 854
 855         /* empty suffix matches any dn */
 856         if ( suffix->bv_len == 0 ) {
 857                 return 1;
 858         }
 859
 860         /* suffix longer than dn */
 861         if ( d < 0 ) {
 862                 return 0;
 863         }
 864
 865         /* no rdn separator or escaped rdn separator */
 866         if ( d > 1 && !DN_SEPARATOR( dn->bv_val[ d - 1 ] ) ) {
 867                 return 0;
 868         }
 869
 870         /* no possible match or malformed dn */
 871         if ( d == 1 ) {
 872                 return 0;
 873         }
 874
 875         /* compare */
 876         return( strcmp( dn->bv_val + d, suffix->bv_val ) == 0 );
 877 }
 878
 879 #ifdef HAVE_TLS
 880 /*
 881  * Convert an X.509 DN into a normalized LDAP DN
 882  */
 883 int
 884 dnX509normalize( void *x509_name, struct berval *out )
 885 {
 886         /* Invoke the LDAP library's converter with our schema-rewriter */
 887         int rc = ldap_X509dn2bv( x509_name, out, LDAPDN_rewrite, 0 );
 888
 889         Debug( LDAP_DEBUG_TRACE,
 890                 "dnX509Normalize: <%s>\n", out->bv_val, 0, 0 );
 891
 892         return rc;
 893 }
 894
 895 /*
 896  * Get the TLS session's peer's DN into a normalized LDAP DN
 897  */
 898 int
 899 dnX509peerNormalize( void *ssl, struct berval *dn )
 900 {
 901
 902         return ldap_pvt_tls_get_peer_dn( ssl, dn, (LDAPDN_rewrite_dummy *)LDAPDN_rewrite, 0 );
 903 }
 904 #endif