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

   1 /* filterentry.c - apply a filter to an entry */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2002 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/socket.h>
  13 #include <ac/string.h>
  14
  15
  16 #include "slap.h"
  17
  18 static int      test_filter_and( Backend *be,
  19         Connection *conn, Operation *op,
  20         Entry *e, Filter *flist );
  21 static int      test_filter_or( Backend *be,
  22         Connection *conn, Operation *op,
  23         Entry *e, Filter *flist );
  24 static int      test_substrings_filter( Backend *be,
  25         Connection *conn, Operation *op,
  26         Entry *e, Filter *f);
  27 static int      test_ava_filter( Backend *be,
  28         Connection *conn, Operation *op,
  29         Entry *e, AttributeAssertion *ava, int type );
  30 static int      test_mra_filter( Backend *be,
  31         Connection *conn, Operation *op,
  32         Entry *e, MatchingRuleAssertion *mra );
  33 static int      test_presence_filter( Backend *be,
  34         Connection *conn, Operation *op,
  35         Entry *e, AttributeDescription *desc );
  36
  37
  38 /*
  39  * test_filter - test a filter against a single entry.
  40  * returns:
  41  *              LDAP_COMPARE_TRUE               filter matched
  42  *              LDAP_COMPARE_FALSE              filter did not match
  43  *              SLAPD_COMPARE_UNDEFINED filter is undefined
  44  *      or an ldap result code indicating error
  45  */
  46
  47 int
  48 test_filter(
  49     Backend     *be,
  50     Connection  *conn,
  51     Operation   *op,
  52     Entry       *e,
  53     Filter      *f
  54 )
  55 {
  56         int     rc;
  57
  58 #ifdef NEW_LOGGING
  59         LDAP_LOG( FILTER, ENTRY, "test_filter: begin\n", 0, 0, 0 );
  60 #else
  61         Debug( LDAP_DEBUG_FILTER, "=> test_filter\n", 0, 0, 0 );
  62 #endif
  63
  64
  65         switch ( f->f_choice ) {
  66         case SLAPD_FILTER_COMPUTED:
  67 #ifdef NEW_LOGGING
  68                 LDAP_LOG( FILTER, DETAIL1,
  69                         "test_filter:   COMPUTED %s (%d)\n",
  70                         f->f_result == LDAP_COMPARE_FALSE ? "false" :
  71                         f->f_result == LDAP_COMPARE_TRUE         ? "true"  :
  72                         f->f_result == SLAPD_COMPARE_UNDEFINED ? "undefined" :
  73                         "error", f->f_result, 0 );
  74 #else
  75                 Debug( LDAP_DEBUG_FILTER, "    COMPUTED %s (%d)\n",
  76                         f->f_result == LDAP_COMPARE_FALSE ? "false" :
  77                         f->f_result == LDAP_COMPARE_TRUE ? "true" :
  78                         f->f_result == SLAPD_COMPARE_UNDEFINED ? "undefined" : "error",
  79                         f->f_result, 0 );
  80 #endif
  81
  82                 rc = f->f_result;
  83                 break;
  84
  85         case LDAP_FILTER_EQUALITY:
  86 #ifdef NEW_LOGGING
  87                 LDAP_LOG( FILTER, DETAIL1, "test_filter:   EQUALITY\n", 0, 0, 0 );
  88 #else
  89                 Debug( LDAP_DEBUG_FILTER, "    EQUALITY\n", 0, 0, 0 );
  90 #endif
  91
  92                 rc = test_ava_filter( be, conn, op, e, f->f_ava,
  93                     LDAP_FILTER_EQUALITY );
  94                 break;
  95
  96         case LDAP_FILTER_SUBSTRINGS:
  97 #ifdef NEW_LOGGING
  98                 LDAP_LOG( FILTER, DETAIL1, "test_filter  SUBSTRINGS\n", 0, 0, 0 );
  99 #else
 100                 Debug( LDAP_DEBUG_FILTER, "    SUBSTRINGS\n", 0, 0, 0 );
 101 #endif
 102
 103                 rc = test_substrings_filter( be, conn, op, e, f );
 104                 break;
 105
 106         case LDAP_FILTER_GE:
 107                 rc = test_ava_filter( be, conn, op, e, f->f_ava,
 108                     LDAP_FILTER_GE );
 109                 break;
 110
 111         case LDAP_FILTER_LE:
 112                 rc = test_ava_filter( be, conn, op, e, f->f_ava,
 113                     LDAP_FILTER_LE );
 114                 break;
 115
 116         case LDAP_FILTER_PRESENT:
 117 #ifdef NEW_LOGGING
 118                 LDAP_LOG( FILTER, DETAIL1, "test_filter:        PRESENT\n", 0, 0, 0 );
 119 #else
 120                 Debug( LDAP_DEBUG_FILTER, "    PRESENT\n", 0, 0, 0 );
 121 #endif
 122
 123                 rc = test_presence_filter( be, conn, op, e, f->f_desc );
 124                 break;
 125
 126         case LDAP_FILTER_APPROX:
 127 #ifdef NEW_LOGGING
 128                 LDAP_LOG( FILTER, DETAIL1, "test_filter: APPROX\n", 0, 0, 0 );
 129 #else
 130                 Debug( LDAP_DEBUG_FILTER, "    APPROX\n", 0, 0, 0 );
 131 #endif
 132                 rc = test_ava_filter( be, conn, op, e, f->f_ava,
 133                     LDAP_FILTER_APPROX );
 134                 break;
 135
 136         case LDAP_FILTER_AND:
 137 #ifdef NEW_LOGGING
 138                 LDAP_LOG( FILTER, DETAIL1, "test_filter:  AND\n", 0, 0, 0 );
 139 #else
 140                 Debug( LDAP_DEBUG_FILTER, "    AND\n", 0, 0, 0 );
 141 #endif
 142
 143                 rc = test_filter_and( be, conn, op, e, f->f_and );
 144                 break;
 145
 146         case LDAP_FILTER_OR:
 147 #ifdef NEW_LOGGING
 148                 LDAP_LOG( FILTER, DETAIL1, "test_filter:        OR\n", 0, 0, 0 );
 149 #else
 150                 Debug( LDAP_DEBUG_FILTER, "    OR\n", 0, 0, 0 );
 151 #endif
 152
 153                 rc = test_filter_or( be, conn, op, e, f->f_or );
 154                 break;
 155
 156         case LDAP_FILTER_NOT:
 157 #ifdef NEW_LOGGING
 158                 LDAP_LOG( FILTER, DETAIL1, "test_filter:        NOT\n", 0, 0, 0 );
 159 #else
 160                 Debug( LDAP_DEBUG_FILTER, "    NOT\n", 0, 0, 0 );
 161 #endif
 162
 163                 rc = test_filter( be, conn, op, e, f->f_not );
 164
 165                 /* Flip true to false and false to true
 166                  * but leave Undefined alone.
 167                  */
 168                 switch( rc ) {
 169                 case LDAP_COMPARE_TRUE:
 170                         rc = LDAP_COMPARE_FALSE;
 171                         break;
 172                 case LDAP_COMPARE_FALSE:
 173                         rc = LDAP_COMPARE_TRUE;
 174                         break;
 175                 }
 176                 break;
 177
 178         case LDAP_FILTER_EXT:
 179 #ifdef NEW_LOGGING
 180                 LDAP_LOG( FILTER, DETAIL1, "test_filter:        EXT\n", 0, 0, 0 );
 181 #else
 182                 Debug( LDAP_DEBUG_FILTER, "    EXT\n", 0, 0, 0 );
 183 #endif
 184
 185                 rc = test_mra_filter( be, conn, op, e, f->f_mra );
 186                 break;
 187
 188         default:
 189 #ifdef NEW_LOGGING
 190                 LDAP_LOG( FILTER, INFO,
 191                         "test_filter:  unknown filter type %lu\n", f->f_choice, 0, 0 );
 192 #else
 193                 Debug( LDAP_DEBUG_ANY, "    unknown filter type %lu\n",
 194                     f->f_choice, 0, 0 );
 195 #endif
 196
 197                 rc = LDAP_PROTOCOL_ERROR;
 198         }
 199
 200 #ifdef NEW_LOGGING
 201         LDAP_LOG( FILTER, RESULTS, "test_filter:  return=%d\n", rc, 0, 0 );
 202 #else
 203         Debug( LDAP_DEBUG_FILTER, "<= test_filter %d\n", rc, 0, 0 );
 204 #endif
 205
 206         return( rc );
 207 }
 208
 209 static int test_mra_filter(
 210         Backend *be,
 211         Connection *conn,
 212         Operation *op,
 213         Entry *e,
 214         MatchingRuleAssertion *mra )
 215 {
 216         Attribute       *a;
 217
 218 #ifndef SLAP_X_MRA_MATCH_DNATTRS
 219         if( !access_allowed( be, conn, op, e,
 220                 mra->ma_desc, &mra->ma_value, ACL_SEARCH, NULL ) )
 221         {
 222                 return LDAP_INSUFFICIENT_ACCESS;
 223         }
 224 #else /* SLAP_X_MRA_MATCH_DNATTRS */
 225         if ( mra->ma_desc ) {
 226                 /*
 227                  * if ma_desc is available, then we're filtering for
 228                  * one attribute, and SEARCH permissions can be checked
 229                  * directly.
 230                  */
 231                 if( !access_allowed( be, conn, op, e,
 232                         mra->ma_desc, &mra->ma_value, ACL_SEARCH, NULL ) )
 233                 {
 234                         return LDAP_INSUFFICIENT_ACCESS;
 235                 }
 236 #endif /* SLAP_X_MRA_MATCH_DNATTRS */
 237
 238                 for(a = attrs_find( e->e_attrs, mra->ma_desc );
 239                         a != NULL;
 240                         a = attrs_find( a->a_next, mra->ma_desc ) )
 241                 {
 242                         struct berval *bv;
 243                         for ( bv = a->a_vals; bv->bv_val != NULL; bv++ ) {
 244                                 int ret;
 245                                 int rc;
 246                                 const char *text;
 247
 248                                 rc = value_match( &ret, a->a_desc, mra->ma_rule,
 249                                         SLAP_MR_ASSERTION_SYNTAX_MATCH,
 250                                         bv, &mra->ma_value, &text );
 251
 252                                 if( rc != LDAP_SUCCESS ) {
 253                                         return rc;
 254                                 }
 255
 256                                 if ( ret == 0 ) {
 257                                         return LDAP_COMPARE_TRUE;
 258                                 }
 259                         }
 260                 }
 261 #ifdef SLAP_X_MRA_MATCH_DNATTRS
 262         } else {
 263
 264                 /*
 265                  * No attribute description: test all
 266                  */
 267                 for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
 268                         struct berval   *bv, value;
 269                         const char      *text = NULL;
 270                         int             rc;
 271
 272                         /* check if matching is appropriate */
 273                         if ( !mr_usable_with_at( mra->ma_rule, a->a_desc->ad_type )) {
 274                                 continue;
 275                         }
 276
 277                         /* normalize for equality */
 278                         rc = value_validate_normalize( a->a_desc,
 279                                 SLAP_MR_EQUALITY,
 280                                 &mra->ma_value, &value, &text );
 281                         if ( rc != LDAP_SUCCESS ) {
 282                                 continue;
 283                         }
 284
 285                         /* check search access */
 286                         if ( !access_allowed( be, conn, op, e,
 287                                 a->a_desc, &value, ACL_SEARCH, NULL ) ) {
 288                                 continue;
 289                         }
 290
 291                         /* check match */
 292                         for ( bv = a->a_vals; bv->bv_val != NULL; bv++ ) {
 293                                 int ret;
 294                                 int rc;
 295
 296                                 rc = value_match( &ret, a->a_desc, mra->ma_rule,
 297                                         SLAP_MR_ASSERTION_SYNTAX_MATCH,
 298                                         bv, &value, &text );
 299
 300                                 if( rc != LDAP_SUCCESS ) {
 301                                         return rc;
 302                                 }
 303
 304                                 if ( ret == 0 ) {
 305                                         return LDAP_COMPARE_TRUE;
 306                                 }
 307                         }
 308                 }
 309         }
 310
 311         /* check attrs in DN AVAs if required */
 312         if ( mra->ma_dnattrs ) {
 313                 LDAPDN          *dn = NULL;
 314                 int             iRDN, iAVA;
 315                 int             rc;
 316
 317                 /* parse and pretty the dn */
 318                 rc = dnPrettyDN( NULL, &e->e_name, &dn );
 319                 if ( rc != LDAP_SUCCESS ) {
 320                         return LDAP_INVALID_SYNTAX;
 321                 }
 322
 323                 /* for each AVA of each RDN ... */
 324                 for ( iRDN = 0; dn[ 0 ][ iRDN ]; iRDN++ ) {
 325                         LDAPRDN         *rdn = dn[ 0 ][ iRDN ];
 326
 327                         for ( iAVA = 0; rdn[ 0 ][ iAVA ]; iAVA++ ) {
 328                                 LDAPAVA         *ava = rdn[ 0 ][ iAVA ];
 329                                 struct berval   *bv = &ava->la_value, value;
 330                                 AttributeDescription *ad = (AttributeDescription *)ava->la_private;
 331                                 int ret;
 332                                 int rc;
 333                                 const char *text;
 334
 335                                 assert( ad );
 336
 337                                 if ( mra->ma_desc ) {
 338                                         /* have a mra type? check for subtype */
 339                                         if ( !is_ad_subtype( ad, mra->ma_desc ) ) {
 340                                                 continue;
 341                                         }
 342                                         value = mra->ma_value;
 343
 344                                 } else {
 345                                         const char      *text = NULL;
 346
 347                                         /* check if matching is appropriate */
 348                                         if ( !mr_usable_with_at( mra->ma_rule, ad->ad_type )) {
 349                                                 continue;
 350                                         }
 351
 352                                         /* normalize for equality */
 353                                         rc = value_validate_normalize( ad, SLAP_MR_EQUALITY,
 354                                                 &mra->ma_value, &value, &text );
 355                                         if ( rc != LDAP_SUCCESS ) {
 356                                                 continue;
 357                                         }
 358
 359                                         /* check search access */
 360                                         if ( !access_allowed( be, conn, op, e,
 361                                                 ad, &value, ACL_SEARCH, NULL ) ) {
 362                                                 continue;
 363                                         }
 364                                 }
 365
 366                                 /* check match */
 367                                 rc = value_match( &ret, ad, mra->ma_rule,
 368                                         SLAP_MR_ASSERTION_SYNTAX_MATCH,
 369                                         bv, &value, &text );
 370
 371                                 if( rc != LDAP_SUCCESS ) {
 372                                         ldap_dnfree( dn );
 373                                         return rc;
 374                                 }
 375
 376                                 if ( ret == 0 ) {
 377                                         ldap_dnfree( dn );
 378                                         return LDAP_COMPARE_TRUE;
 379                                 }
 380                         }
 381                 }
 382         }
 383 #endif /* SLAP_X_MRA_MATCH_DNATTRS */
 384
 385         return LDAP_COMPARE_FALSE;
 386 }
 387
 388 static int
 389 test_ava_filter(
 390     Backend     *be,
 391     Connection  *conn,
 392     Operation   *op,
 393     Entry       *e,
 394         AttributeAssertion *ava,
 395     int         type
 396 )
 397 {
 398         Attribute       *a;
 399
 400         if ( !access_allowed( be, conn, op, e,
 401                 ava->aa_desc, &ava->aa_value, ACL_SEARCH, NULL ) )
 402         {
 403                 return LDAP_INSUFFICIENT_ACCESS;
 404         }
 405
 406         for(a = attrs_find( e->e_attrs, ava->aa_desc );
 407                 a != NULL;
 408                 a = attrs_find( a->a_next, ava->aa_desc ) )
 409         {
 410                 MatchingRule *mr;
 411                 struct berval *bv;
 412
 413                 switch ( type ) {
 414                 case LDAP_FILTER_APPROX:
 415                         mr = a->a_desc->ad_type->sat_approx;
 416                         if( mr != NULL ) break;
 417
 418                         /* use EQUALITY matching rule if no APPROX rule */
 419
 420                 case LDAP_FILTER_EQUALITY:
 421                         mr = a->a_desc->ad_type->sat_equality;
 422                         break;
 423
 424                 case LDAP_FILTER_GE:
 425                 case LDAP_FILTER_LE:
 426                         mr = a->a_desc->ad_type->sat_ordering;
 427                         break;
 428
 429                 default:
 430                         mr = NULL;
 431                 }
 432
 433                 if( mr == NULL ) {
 434                         continue;
 435                 }
 436
 437                 for ( bv = a->a_vals; bv->bv_val != NULL; bv++ ) {
 438                         int ret;
 439                         int rc;
 440                         const char *text;
 441
 442                         rc = value_match( &ret, a->a_desc, mr,
 443                                 SLAP_MR_ASSERTION_SYNTAX_MATCH,
 444                                 bv, &ava->aa_value, &text );
 445
 446                         if( rc != LDAP_SUCCESS ) {
 447                                 return rc;
 448                         }
 449
 450                         switch ( type ) {
 451                         case LDAP_FILTER_EQUALITY:
 452                         case LDAP_FILTER_APPROX:
 453                                 if ( ret == 0 ) {
 454                                         return LDAP_COMPARE_TRUE;
 455                                 }
 456                                 break;
 457
 458                         case LDAP_FILTER_GE:
 459                                 if ( ret >= 0 ) {
 460                                         return LDAP_COMPARE_TRUE;
 461                                 }
 462                                 break;
 463
 464                         case LDAP_FILTER_LE:
 465                                 if ( ret <= 0 ) {
 466                                         return LDAP_COMPARE_TRUE;
 467                                 }
 468                                 break;
 469                         }
 470                 }
 471         }
 472
 473         return( LDAP_COMPARE_FALSE );
 474 }
 475
 476
 477 static int
 478 test_presence_filter(
 479     Backend     *be,
 480     Connection  *conn,
 481     Operation   *op,
 482     Entry       *e,
 483         AttributeDescription *desc
 484 )
 485 {
 486         if ( !access_allowed( be, conn, op, e, desc, NULL, ACL_SEARCH, NULL ) )
 487         {
 488                 return LDAP_INSUFFICIENT_ACCESS;
 489         }
 490
 491         return attrs_find( e->e_attrs, desc ) != NULL
 492                 ? LDAP_COMPARE_TRUE : LDAP_COMPARE_FALSE;
 493 }
 494
 495
 496 static int
 497 test_filter_and(
 498     Backend     *be,
 499     Connection  *conn,
 500     Operation   *op,
 501     Entry       *e,
 502     Filter      *flist
 503 )
 504 {
 505         Filter  *f;
 506         int rtn = LDAP_COMPARE_TRUE; /* True if empty */
 507
 508 #ifdef NEW_LOGGING
 509         LDAP_LOG( FILTER, ENTRY, "test_filter_and: begin\n", 0, 0, 0 );
 510 #else
 511         Debug( LDAP_DEBUG_FILTER, "=> test_filter_and\n", 0, 0, 0 );
 512 #endif
 513
 514
 515         for ( f = flist; f != NULL; f = f->f_next ) {
 516                 int rc = test_filter( be, conn, op, e, f );
 517
 518                 if ( rc == LDAP_COMPARE_FALSE ) {
 519                         /* filter is False */
 520                         rtn = rc;
 521                         break;
 522                 }
 523
 524                 if ( rc != LDAP_COMPARE_TRUE ) {
 525                         /* filter is Undefined unless later elements are False */
 526                         rtn = rc;
 527                 }
 528         }
 529
 530 #ifdef NEW_LOGGING
 531         LDAP_LOG( FILTER, RESULTS, "test_filter_and:  rc=%d\n", rtn, 0, 0 );
 532 #else
 533         Debug( LDAP_DEBUG_FILTER, "<= test_filter_and %d\n", rtn, 0, 0 );
 534 #endif
 535
 536         return rtn;
 537 }
 538
 539 static int
 540 test_filter_or(
 541     Backend     *be,
 542     Connection  *conn,
 543     Operation   *op,
 544     Entry       *e,
 545     Filter      *flist
 546 )
 547 {
 548         Filter  *f;
 549         int rtn = LDAP_COMPARE_FALSE; /* False if empty */
 550
 551 #ifdef NEW_LOGGING
 552         LDAP_LOG( FILTER, ENTRY, "test_filter_or: begin\n", 0, 0, 0 );
 553 #else
 554         Debug( LDAP_DEBUG_FILTER, "=> test_filter_or\n", 0, 0, 0 );
 555 #endif
 556
 557
 558         for ( f = flist; f != NULL; f = f->f_next ) {
 559                 int rc = test_filter( be, conn, op, e, f );
 560
 561                 if ( rc == LDAP_COMPARE_TRUE ) {
 562                         /* filter is True */
 563                         rtn = rc;
 564                         break;
 565                 }
 566
 567                 if ( rc != LDAP_COMPARE_FALSE ) {
 568                         /* filter is Undefined unless later elements are True */
 569                         rtn = rc;
 570                 }
 571         }
 572
 573 #ifdef NEW_LOGGING
 574         LDAP_LOG( FILTER, ENTRY, "test_filter_or: result=%d\n", rtn, 0, 0 );
 575 #else
 576         Debug( LDAP_DEBUG_FILTER, "<= test_filter_or %d\n", rtn, 0, 0 );
 577 #endif
 578
 579         return rtn;
 580 }
 581
 582
 583 static int
 584 test_substrings_filter(
 585     Backend     *be,
 586     Connection  *conn,
 587     Operation   *op,
 588     Entry       *e,
 589     Filter      *f
 590 )
 591 {
 592         Attribute       *a;
 593
 594 #ifdef NEW_LOGGING
 595         LDAP_LOG( FILTER, ENTRY, "test_substrings_filter: begin\n", 0, 0, 0 );
 596 #else
 597         Debug( LDAP_DEBUG_FILTER, "begin test_substrings_filter\n", 0, 0, 0 );
 598 #endif
 599
 600
 601         if ( !access_allowed( be, conn, op, e,
 602                 f->f_sub_desc, NULL, ACL_SEARCH, NULL ) )
 603         {
 604                 return LDAP_INSUFFICIENT_ACCESS;
 605         }
 606
 607         for(a = attrs_find( e->e_attrs, f->f_sub_desc );
 608                 a != NULL;
 609                 a = attrs_find( a->a_next, f->f_sub_desc ) )
 610         {
 611                 MatchingRule *mr = a->a_desc->ad_type->sat_substr;
 612                 struct berval *bv;
 613
 614                 if( mr == NULL ) {
 615                         continue;
 616                 }
 617
 618                 for ( bv = a->a_vals; bv->bv_val != NULL; bv++ ) {
 619                         int ret;
 620                         int rc;
 621                         const char *text;
 622
 623                         rc = value_match( &ret, a->a_desc, mr,
 624                                 SLAP_MR_ASSERTION_SYNTAX_MATCH,
 625                                 bv, f->f_sub, &text );
 626
 627                         if( rc != LDAP_SUCCESS ) {
 628                                 return rc;
 629                         }
 630
 631                         if ( ret == 0 ) {
 632                                 return LDAP_COMPARE_TRUE;
 633                         }
 634                 }
 635         }
 636
 637 #ifdef NEW_LOGGING
 638         LDAP_LOG( FILTER, ENTRY, "test_substrings_filter: return FALSE\n", 0, 0, 0 );
 639 #else
 640         Debug( LDAP_DEBUG_FILTER, "end test_substrings_filter 1\n", 0, 0, 0 );
 641 #endif
 642
 643         return LDAP_COMPARE_FALSE;
 644 }