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", 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         Attribute       *a;
 229
 230         if( !access_allowed( be, conn, op, e,
 231                 mra->ma_desc, &mra->ma_value, ACL_SEARCH, NULL ) )
 232         {
 233                 return LDAP_INSUFFICIENT_ACCESS;
 234         }
 235
 236         for(a = attrs_find( e->e_attrs, mra->ma_desc );
 237                 a != NULL;
 238                 a = attrs_find( a->a_next, mra->ma_desc ) )
 239         {
 240                 struct berval *bv;
 241                 for ( bv = a->a_vals; bv->bv_val != NULL; bv++ ) {
 242                         int ret;
 243                         int rc;
 244                         const char *text;
 245
 246                         rc = value_match( &ret, a->a_desc, mra->ma_rule,
 247                                 SLAP_MR_ASSERTION_SYNTAX_MATCH,
 248                                 bv, &mra->ma_value,
 249                                 &text );
 250
 251                         if( rc != LDAP_SUCCESS ) {
 252                                 return rc;
 253                         }
 254
 255                         if ( ret == 0 ) {
 256                                 return LDAP_COMPARE_TRUE;
 257                         }
 258                 }
 259         }
 260
 261         return LDAP_COMPARE_FALSE;
 262 }
 263
 264 static int
 265 test_ava_filter(
 266     Backend     *be,
 267     Connection  *conn,
 268     Operation   *op,
 269     Entry       *e,
 270         AttributeAssertion *ava,
 271     int         type
 272 )
 273 {
 274         Attribute       *a;
 275
 276         if ( !access_allowed( be, conn, op, e,
 277                 ava->aa_desc, &ava->aa_value, ACL_SEARCH, NULL ) )
 278         {
 279                 return LDAP_INSUFFICIENT_ACCESS;
 280         }
 281
 282         for(a = attrs_find( e->e_attrs, ava->aa_desc );
 283                 a != NULL;
 284                 a = attrs_find( a->a_next, ava->aa_desc ) )
 285         {
 286                 MatchingRule *mr;
 287                 struct berval *bv;
 288
 289                 switch ( type ) {
 290                 case LDAP_FILTER_APPROX:
 291                         mr = a->a_desc->ad_type->sat_approx;
 292                         if( mr != NULL ) break;
 293
 294                         /* use EQUALITY matching rule if no APPROX rule */
 295
 296                 case LDAP_FILTER_EQUALITY:
 297                         mr = a->a_desc->ad_type->sat_equality;
 298                         break;
 299
 300                 case LDAP_FILTER_GE:
 301                 case LDAP_FILTER_LE:
 302                         mr = a->a_desc->ad_type->sat_ordering;
 303                         break;
 304
 305                 default:
 306                         mr = NULL;
 307                 }
 308
 309                 if( mr == NULL ) {
 310                         continue;
 311                 }
 312
 313                 for ( bv = a->a_vals; bv->bv_val != NULL; bv++ ) {
 314                         int ret;
 315                         int rc;
 316                         const char *text;
 317
 318                         rc = value_match( &ret, a->a_desc, mr,
 319                                 SLAP_MR_ASSERTION_SYNTAX_MATCH,
 320                                 bv, &ava->aa_value, &text );
 321
 322                         if( rc != LDAP_SUCCESS ) {
 323                                 return rc;
 324                         }
 325
 326                         switch ( type ) {
 327                         case LDAP_FILTER_EQUALITY:
 328                         case LDAP_FILTER_APPROX:
 329                                 if ( ret == 0 ) {
 330                                         return LDAP_COMPARE_TRUE;
 331                                 }
 332                                 break;
 333
 334                         case LDAP_FILTER_GE:
 335                                 if ( ret >= 0 ) {
 336                                         return LDAP_COMPARE_TRUE;
 337                                 }
 338                                 break;
 339
 340                         case LDAP_FILTER_LE:
 341                                 if ( ret <= 0 ) {
 342                                         return LDAP_COMPARE_TRUE;
 343                                 }
 344                                 break;
 345                         }
 346                 }
 347         }
 348
 349         return( LDAP_COMPARE_FALSE );
 350 }
 351
 352
 353 static int
 354 test_presence_filter(
 355     Backend     *be,
 356     Connection  *conn,
 357     Operation   *op,
 358     Entry       *e,
 359         AttributeDescription *desc
 360 )
 361 {
 362         if ( !access_allowed( be, conn, op, e, desc, NULL, ACL_SEARCH, NULL ) )
 363         {
 364                 return LDAP_INSUFFICIENT_ACCESS;
 365         }
 366
 367         return attrs_find( e->e_attrs, desc ) != NULL
 368                 ? LDAP_COMPARE_TRUE : LDAP_COMPARE_FALSE;
 369 }
 370
 371
 372 static int
 373 test_filter_and(
 374     Backend     *be,
 375     Connection  *conn,
 376     Operation   *op,
 377     Entry       *e,
 378     Filter      *flist
 379 )
 380 {
 381         Filter  *f;
 382         int rtn = LDAP_COMPARE_TRUE; /* True if empty */
 383
 384 #ifdef NEW_LOGGING
 385         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 386                    "test_filter_and: begin\n" ));
 387 #else
 388         Debug( LDAP_DEBUG_FILTER, "=> test_filter_and\n", 0, 0, 0 );
 389 #endif
 390
 391
 392         for ( f = flist; f != NULL; f = f->f_next ) {
 393                 int rc = test_filter( be, conn, op, e, f );
 394
 395                 if ( rc == LDAP_COMPARE_FALSE ) {
 396                         /* filter is False */
 397                         rtn = rc;
 398                         break;
 399                 }
 400
 401                 if ( rc != LDAP_COMPARE_TRUE ) {
 402                         /* filter is Undefined unless later elements are False */
 403                         rtn = rc;
 404                 }
 405         }
 406
 407 #ifdef NEW_LOGGING
 408         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 409                    "test_filter_and:  rc=%d\n", rtn ));
 410 #else
 411         Debug( LDAP_DEBUG_FILTER, "<= test_filter_and %d\n", rtn, 0, 0 );
 412 #endif
 413
 414         return rtn;
 415 }
 416
 417 static int
 418 test_filter_or(
 419     Backend     *be,
 420     Connection  *conn,
 421     Operation   *op,
 422     Entry       *e,
 423     Filter      *flist
 424 )
 425 {
 426         Filter  *f;
 427         int rtn = LDAP_COMPARE_FALSE; /* False if empty */
 428
 429 #ifdef NEW_LOGGING
 430         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 431                    "test_filter_or: begin\n" ));
 432 #else
 433         Debug( LDAP_DEBUG_FILTER, "=> test_filter_or\n", 0, 0, 0 );
 434 #endif
 435
 436
 437         for ( f = flist; f != NULL; f = f->f_next ) {
 438                 int rc = test_filter( be, conn, op, e, f );
 439
 440                 if ( rc == LDAP_COMPARE_TRUE ) {
 441                         /* filter is True */
 442                         rtn = rc;
 443                         break;
 444                 }
 445
 446                 if ( rc != LDAP_COMPARE_FALSE ) {
 447                         /* filter is Undefined unless later elements are True */
 448                         rtn = rc;
 449                 }
 450         }
 451
 452 #ifdef NEW_LOGGING
 453         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 454                    "test_filter_or: result=%d\n", rtn ));
 455 #else
 456         Debug( LDAP_DEBUG_FILTER, "<= test_filter_or %d\n", rtn, 0, 0 );
 457 #endif
 458
 459         return rtn;
 460 }
 461
 462
 463 static int
 464 test_substrings_filter(
 465     Backend     *be,
 466     Connection  *conn,
 467     Operation   *op,
 468     Entry       *e,
 469     Filter      *f
 470 )
 471 {
 472         Attribute       *a;
 473
 474 #ifdef NEW_LOGGING
 475         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 476                    "test_substrings_filter: begin\n" ));
 477 #else
 478         Debug( LDAP_DEBUG_FILTER, "begin test_substrings_filter\n", 0, 0, 0 );
 479 #endif
 480
 481
 482         if ( !access_allowed( be, conn, op, e,
 483                 f->f_sub_desc, NULL, ACL_SEARCH, NULL ) )
 484         {
 485                 return LDAP_INSUFFICIENT_ACCESS;
 486         }
 487
 488         for(a = attrs_find( e->e_attrs, f->f_sub_desc );
 489                 a != NULL;
 490                 a = attrs_find( a->a_next, f->f_sub_desc ) )
 491         {
 492                 MatchingRule *mr = a->a_desc->ad_type->sat_substr;
 493                 struct berval *bv;
 494
 495                 if( mr == NULL ) {
 496                         continue;
 497                 }
 498
 499                 for ( bv = a->a_vals; bv->bv_val != NULL; bv++ ) {
 500                         int ret;
 501                         int rc;
 502                         const char *text;
 503
 504                         rc = value_match( &ret, a->a_desc, mr,
 505                                 SLAP_MR_ASSERTION_SYNTAX_MATCH,
 506                                 bv, f->f_sub, &text );
 507
 508                         if( rc != LDAP_SUCCESS ) {
 509                                 return rc;
 510                         }
 511
 512                         if ( ret == 0 ) {
 513                                 return LDAP_COMPARE_TRUE;
 514                         }
 515                 }
 516         }
 517
 518 #ifdef NEW_LOGGING
 519         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 520                    "test_substrings_filter: return FALSE\n" ));
 521 #else
 522         Debug( LDAP_DEBUG_FILTER, "end test_substrings_filter 1\n", 0, 0, 0 );
 523 #endif
 524
 525         return LDAP_COMPARE_FALSE;
 526 }