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

   1 /* filterentry.c - apply a filter to an entry */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 1998-2000 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", LDAP_LEVEL_ENTRY,
  60                    "test_filter: begin\n" ));
  61 #else
  62         Debug( LDAP_DEBUG_FILTER, "=> test_filter\n", 0, 0, 0 );
  63 #endif
  64
  65
  66         switch ( f->f_choice ) {
  67         case SLAPD_FILTER_COMPUTED:
  68 #ifdef NEW_LOGGING
  69                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
  70                            "test_filter:   COMPUTED %s (%d)\n",
  71                            f->f_result == LDAP_COMPARE_FALSE ? "false" :
  72                            f->f_result == LDAP_COMPARE_TRUE      ? "true"  :
  73                            f->f_result == SLAPD_COMPARE_UNDEFINED ? "undefined" :
  74                            "error",
  75                            f->f_result ));
  76 #else
  77                 Debug( LDAP_DEBUG_FILTER, "    COMPUTED %s (%d)\n",
  78                         f->f_result == LDAP_COMPARE_FALSE ? "false" :
  79                         f->f_result == LDAP_COMPARE_TRUE ? "true" :
  80                         f->f_result == SLAPD_COMPARE_UNDEFINED ? "undefined" : "error",
  81                         f->f_result, 0 );
  82 #endif
  83
  84                 rc = f->f_result;
  85                 break;
  86
  87         case LDAP_FILTER_EQUALITY:
  88 #ifdef NEW_LOGGING
  89                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
  90                            "test_filter:   EQUALITY\n" ));
  91 #else
  92                 Debug( LDAP_DEBUG_FILTER, "    EQUALITY\n", 0, 0, 0 );
  93 #endif
  94
  95                 rc = test_ava_filter( be, conn, op, e, f->f_ava,
  96                     LDAP_FILTER_EQUALITY );
  97                 break;
  98
  99         case LDAP_FILTER_SUBSTRINGS:
 100 #ifdef NEW_LOGGING
 101                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 102                            "test_filter  SUBSTRINGS\n" ));
 103 #else
 104                 Debug( LDAP_DEBUG_FILTER, "    SUBSTRINGS\n", 0, 0, 0 );
 105 #endif
 106
 107                 rc = test_substrings_filter( be, conn, op, e, f );
 108                 break;
 109
 110         case LDAP_FILTER_GE:
 111                 rc = test_ava_filter( be, conn, op, e, f->f_ava,
 112                     LDAP_FILTER_GE );
 113                 break;
 114
 115         case LDAP_FILTER_LE:
 116                 rc = test_ava_filter( be, conn, op, e, f->f_ava,
 117                     LDAP_FILTER_LE );
 118                 break;
 119
 120         case LDAP_FILTER_PRESENT:
 121 #ifdef NEW_LOGGING
 122                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 123                            "test_filter:        PRESENT\n" ));
 124 #else
 125                 Debug( LDAP_DEBUG_FILTER, "    PRESENT\n", 0, 0, 0 );
 126 #endif
 127
 128                 rc = test_presence_filter( be, conn, op, e, f->f_desc );
 129                 break;
 130
 131         case LDAP_FILTER_APPROX:
 132 #ifdef NEW_LOGGING
 133                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 134                            "test_filter: APPROX\n" ));
 135 #else
 136                 Debug( LDAP_DEBUG_FILTER, "    APPROX\n", 0, 0, 0 );
 137 #endif
 138                 rc = test_ava_filter( be, conn, op, e, f->f_ava,
 139                     LDAP_FILTER_APPROX );
 140                 break;
 141
 142         case LDAP_FILTER_AND:
 143 #ifdef NEW_LOGGING
 144                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 145                            "test_filter:  AND\n" ));
 146 #else
 147                 Debug( LDAP_DEBUG_FILTER, "    AND\n", 0, 0, 0 );
 148 #endif
 149
 150                 rc = test_filter_and( be, conn, op, e, f->f_and );
 151                 break;
 152
 153         case LDAP_FILTER_OR:
 154 #ifdef NEW_LOGGING
 155                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 156                            "test_filter:        OR\n" ));
 157 #else
 158                 Debug( LDAP_DEBUG_FILTER, "    OR\n", 0, 0, 0 );
 159 #endif
 160
 161                 rc = test_filter_or( be, conn, op, e, f->f_or );
 162                 break;
 163
 164         case LDAP_FILTER_NOT:
 165 #ifdef NEW_LOGGING
 166                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 167                            "test_filter:        NOT\n" ));
 168 #else
 169                 Debug( LDAP_DEBUG_FILTER, "    NOT\n", 0, 0, 0 );
 170 #endif
 171
 172                 rc = test_filter( be, conn, op, e, f->f_not );
 173
 174                 /* Flip true to false and false to true
 175                  * but leave Undefined alone.
 176                  */
 177                 switch( rc ) {
 178                 case LDAP_COMPARE_TRUE:
 179                         rc = LDAP_COMPARE_FALSE;
 180                         break;
 181                 case LDAP_COMPARE_FALSE:
 182                         rc = LDAP_COMPARE_TRUE;
 183                         break;
 184                 }
 185                 break;
 186
 187         case LDAP_FILTER_EXT:
 188 #ifdef NEW_LOGGING
 189                 LDAP_LOG(( "filter", LDAP_LEVEL_DETAIL1,
 190                            "test_filter:        EXT\n" ));
 191 #else
 192                 Debug( LDAP_DEBUG_FILTER, "    EXT\n", 0, 0, 0 );
 193 #endif
 194
 195                 rc = test_mra_filter( be, conn, op, e, f->f_mra );
 196                 break;
 197
 198         default:
 199 #ifdef NEW_LOGGING
 200                 LDAP_LOG(( "filter", LDAP_LEVEL_INFO,
 201                            "test_filter:  unknown filter type %lu\n",
 202                        f->f_choice ));
 203 #else
 204                 Debug( LDAP_DEBUG_ANY, "    unknown filter type %lu\n",
 205                     f->f_choice, 0, 0 );
 206 #endif
 207
 208                 rc = LDAP_PROTOCOL_ERROR;
 209         }
 210
 211 #ifdef NEW_LOGGING
 212         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 213                    "test_filter:  return=%d\n", rc ));
 214 #else
 215         Debug( LDAP_DEBUG_FILTER, "<= test_filter %d\n", rc, 0, 0 );
 216 #endif
 217
 218         return( rc );
 219 }
 220
 221 static int test_mra_filter(
 222         Backend *be,
 223         Connection *conn,
 224         Operation *op,
 225         Entry *e,
 226         MatchingRuleAssertion *mra )
 227 {
 228         int             i;
 229         Attribute       *a;
 230
 231         if( !access_allowed( be, conn, op, e,
 232                 mra->ma_desc, mra->ma_value, ACL_SEARCH ) )
 233         {
 234                 return LDAP_INSUFFICIENT_ACCESS;
 235         }
 236
 237         if( strcmp(mra->ma_rule->smr_syntax->ssyn_oid,
 238                 mra->ma_desc->ad_type->sat_syntax->ssyn_oid) != 0)
 239         {
 240                 return LDAP_INVALID_SYNTAX;
 241         }
 242
 243         if( mra->ma_rule == NULL )
 244         {
 245                 return LDAP_INAPPROPRIATE_MATCHING;
 246         }
 247
 248         for(a = attrs_find( e->e_attrs, mra->ma_desc );
 249                 a != NULL;
 250                 a = attrs_find( a->a_next, mra->ma_desc ) )
 251         {
 252                 for ( i = 0; a->a_vals[i] != NULL; i++ ) {
 253                         int ret;
 254                         int rc;
 255                         const char *text;
 256
 257                         rc = value_match( &ret, a->a_desc, mra->ma_rule,
 258                                 SLAP_MR_ASSERTION_SYNTAX_MATCH,
 259                                 a->a_vals[i], mra->ma_value,
 260                                 &text );
 261
 262                         if( rc != LDAP_SUCCESS ) {
 263                                 return rc;
 264                         }
 265
 266                         if ( ret ) {
 267                                 return LDAP_COMPARE_TRUE;
 268                         }
 269                 }
 270         }
 271
 272         return LDAP_COMPARE_FALSE;
 273 }
 274
 275 static int
 276 test_ava_filter(
 277     Backend     *be,
 278     Connection  *conn,
 279     Operation   *op,
 280     Entry       *e,
 281         AttributeAssertion *ava,
 282     int         type
 283 )
 284 {
 285         int             i;
 286         Attribute       *a;
 287
 288         if ( !access_allowed( be, conn, op, e,
 289                 ava->aa_desc, ava->aa_value, ACL_SEARCH ) )
 290         {
 291                 return LDAP_INSUFFICIENT_ACCESS;
 292         }
 293
 294         for(a = attrs_find( e->e_attrs, ava->aa_desc );
 295                 a != NULL;
 296                 a = attrs_find( a->a_next, ava->aa_desc ) )
 297         {
 298                 MatchingRule *mr;
 299
 300                 switch ( type ) {
 301                 case LDAP_FILTER_APPROX:
 302                         mr = a->a_desc->ad_type->sat_approx;
 303                         if( mr != NULL ) break;
 304
 305                         /* use EQUALITY matching rule if no APPROX rule */
 306
 307                 case LDAP_FILTER_EQUALITY:
 308                         mr = a->a_desc->ad_type->sat_equality;
 309                         break;
 310
 311                 case LDAP_FILTER_GE:
 312                 case LDAP_FILTER_LE:
 313                         mr = a->a_desc->ad_type->sat_ordering;
 314                         break;
 315
 316                 default:
 317                         mr = NULL;
 318                 }
 319
 320                 if( mr == NULL ) {
 321                         continue;
 322                 }
 323
 324                 for ( i = 0; a->a_vals[i] != NULL; i++ ) {
 325                         int ret;
 326                         int rc;
 327                         const char *text;
 328
 329                         rc = value_match( &ret, a->a_desc, mr,
 330                                 SLAP_MR_ASSERTION_SYNTAX_MATCH,
 331                                 a->a_vals[i], ava->aa_value,
 332                                 &text );
 333
 334                         if( rc != LDAP_SUCCESS ) {
 335                                 return rc;
 336                         }
 337
 338                         switch ( type ) {
 339                         case LDAP_FILTER_EQUALITY:
 340                         case LDAP_FILTER_APPROX:
 341                                 if ( ret == 0 ) {
 342                                         return LDAP_COMPARE_TRUE;
 343                                 }
 344                                 break;
 345
 346                         case LDAP_FILTER_GE:
 347                                 if ( ret >= 0 ) {
 348                                         return LDAP_COMPARE_TRUE;
 349                                 }
 350                                 break;
 351
 352                         case LDAP_FILTER_LE:
 353                                 if ( ret <= 0 ) {
 354                                         return LDAP_COMPARE_TRUE;
 355                                 }
 356                                 break;
 357                         }
 358                 }
 359         }
 360
 361         return( LDAP_COMPARE_FALSE );
 362 }
 363
 364
 365 static int
 366 test_presence_filter(
 367     Backend     *be,
 368     Connection  *conn,
 369     Operation   *op,
 370     Entry       *e,
 371         AttributeDescription *desc
 372 )
 373 {
 374         if ( !access_allowed( be, conn, op, e, desc, NULL, ACL_SEARCH ) )
 375         {
 376                 return LDAP_INSUFFICIENT_ACCESS;
 377         }
 378
 379         return attrs_find( e->e_attrs, desc ) != NULL
 380                 ? LDAP_COMPARE_TRUE : LDAP_COMPARE_FALSE;
 381 }
 382
 383
 384 static int
 385 test_filter_and(
 386     Backend     *be,
 387     Connection  *conn,
 388     Operation   *op,
 389     Entry       *e,
 390     Filter      *flist
 391 )
 392 {
 393         Filter  *f;
 394         int rtn = LDAP_COMPARE_TRUE; /* True if empty */
 395
 396 #ifdef NEW_LOGGING
 397         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 398                    "test_filter_and: begin\n" ));
 399 #else
 400         Debug( LDAP_DEBUG_FILTER, "=> test_filter_and\n", 0, 0, 0 );
 401 #endif
 402
 403
 404         for ( f = flist; f != NULL; f = f->f_next ) {
 405                 int rc = test_filter( be, conn, op, e, f );
 406
 407                 if ( rc == LDAP_COMPARE_FALSE ) {
 408                         /* filter is False */
 409                         rtn = rc;
 410                         break;
 411                 }
 412
 413                 if ( rc != LDAP_COMPARE_TRUE ) {
 414                         /* filter is Undefined unless later elements are False */
 415                         rtn = rc;
 416                 }
 417         }
 418
 419 #ifdef NEW_LOGGING
 420         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 421                    "test_filter_and:  rc=%d\n", rtn ));
 422 #else
 423         Debug( LDAP_DEBUG_FILTER, "<= test_filter_and %d\n", rtn, 0, 0 );
 424 #endif
 425
 426         return rtn;
 427 }
 428
 429 static int
 430 test_filter_or(
 431     Backend     *be,
 432     Connection  *conn,
 433     Operation   *op,
 434     Entry       *e,
 435     Filter      *flist
 436 )
 437 {
 438         Filter  *f;
 439         int rtn = LDAP_COMPARE_FALSE; /* False if empty */
 440
 441 #ifdef NEW_LOGGING
 442         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 443                    "test_filter_or: begin\n" ));
 444 #else
 445         Debug( LDAP_DEBUG_FILTER, "=> test_filter_or\n", 0, 0, 0 );
 446 #endif
 447
 448
 449         for ( f = flist; f != NULL; f = f->f_next ) {
 450                 int rc = test_filter( be, conn, op, e, f );
 451
 452                 if ( rc == LDAP_COMPARE_TRUE ) {
 453                         /* filter is True */
 454                         rtn = rc;
 455                         break;
 456                 }
 457
 458                 if ( rc != LDAP_COMPARE_FALSE ) {
 459                         /* filter is Undefined unless later elements are True */
 460                         rtn = rc;
 461                 }
 462         }
 463
 464 #ifdef NEW_LOGGING
 465         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 466                    "test_filter_or: result=%d\n", rtn ));
 467 #else
 468         Debug( LDAP_DEBUG_FILTER, "<= test_filter_or %d\n", rtn, 0, 0 );
 469 #endif
 470
 471         return rtn;
 472 }
 473
 474
 475 static int
 476 test_substrings_filter(
 477     Backend     *be,
 478     Connection  *conn,
 479     Operation   *op,
 480     Entry       *e,
 481     Filter      *f
 482 )
 483 {
 484         Attribute       *a;
 485
 486 #ifdef NEW_LOGGING
 487         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 488                    "test_substrings_filter: begin\n" ));
 489 #else
 490         Debug( LDAP_DEBUG_FILTER, "begin test_substrings_filter\n", 0, 0, 0 );
 491 #endif
 492
 493
 494         if ( !access_allowed( be, conn, op, e,
 495                 f->f_sub_desc, NULL, ACL_SEARCH ) )
 496         {
 497                 return LDAP_INSUFFICIENT_ACCESS;
 498         }
 499
 500         for(a = attrs_find( e->e_attrs, f->f_sub_desc );
 501                 a != NULL;
 502                 a = attrs_find( a->a_next, f->f_sub_desc ) )
 503         {
 504                 int i;
 505                 MatchingRule *mr = a->a_desc->ad_type->sat_substr;
 506
 507                 if( mr == NULL ) {
 508                         continue;
 509                 }
 510
 511                 for ( i = 0; a->a_vals[i] != NULL; i++ ) {
 512                         int ret;
 513                         int rc;
 514                         const char *text;
 515
 516                         rc = value_match( &ret, a->a_desc, mr,
 517                                 SLAP_MR_ASSERTION_SYNTAX_MATCH,
 518                                 a->a_vals[i], f->f_sub,
 519                                 &text );
 520
 521                         if( rc != LDAP_SUCCESS ) {
 522                                 return rc;
 523                         }
 524
 525                         if ( ret == 0 ) {
 526                                 return LDAP_COMPARE_TRUE;
 527                         }
 528                 }
 529         }
 530
 531 #ifdef NEW_LOGGING
 532         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 533                    "test_substrings_filter: return FALSE\n" ));
 534 #else
 535         Debug( LDAP_DEBUG_FILTER, "end test_substrings_filter 1\n", 0, 0, 0 );
 536 #endif
 537
 538         return LDAP_COMPARE_FALSE;
 539 }