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, 0,
 258                                 a->a_vals[i], mra->ma_value,
 259                                 &text );
 260
 261                         if( rc != LDAP_SUCCESS ) {
 262                                 return rc;
 263                         }
 264
 265                         if ( ret ) {
 266                                 return LDAP_COMPARE_TRUE;
 267                         }
 268                 }
 269         }
 270
 271         return LDAP_COMPARE_FALSE;
 272 }
 273
 274 static int
 275 test_ava_filter(
 276     Backend     *be,
 277     Connection  *conn,
 278     Operation   *op,
 279     Entry       *e,
 280         AttributeAssertion *ava,
 281     int         type
 282 )
 283 {
 284         int             i;
 285         Attribute       *a;
 286
 287         if ( !access_allowed( be, conn, op, e,
 288                 ava->aa_desc, ava->aa_value, ACL_SEARCH ) )
 289         {
 290                 return LDAP_INSUFFICIENT_ACCESS;
 291         }
 292
 293         for(a = attrs_find( e->e_attrs, ava->aa_desc );
 294                 a != NULL;
 295                 a = attrs_find( a->a_next, ava->aa_desc ) )
 296         {
 297                 MatchingRule *mr;
 298
 299                 switch ( type ) {
 300                 case LDAP_FILTER_APPROX:
 301                         mr = a->a_desc->ad_type->sat_approx;
 302                         if( mr != NULL ) break;
 303
 304                         /* use EQUALITY matching rule if no APPROX rule */
 305
 306                 case LDAP_FILTER_EQUALITY:
 307                         mr = a->a_desc->ad_type->sat_equality;
 308                         break;
 309
 310                 case LDAP_FILTER_GE:
 311                 case LDAP_FILTER_LE:
 312                         mr = a->a_desc->ad_type->sat_ordering;
 313                         break;
 314
 315                 default:
 316                         mr = NULL;
 317                 }
 318
 319                 if( mr == NULL ) {
 320                         continue;
 321                 }
 322
 323                 for ( i = 0; a->a_vals[i] != NULL; i++ ) {
 324                         int ret;
 325                         int rc;
 326                         const char *text;
 327
 328                         rc = value_match( &ret, a->a_desc, mr, 0,
 329                                 a->a_vals[i], ava->aa_value,
 330                                 &text );
 331
 332                         if( rc != LDAP_SUCCESS ) {
 333                                 return rc;
 334                         }
 335
 336                         switch ( type ) {
 337                         case LDAP_FILTER_EQUALITY:
 338                         case LDAP_FILTER_APPROX:
 339                                 if ( ret == 0 ) {
 340                                         return LDAP_COMPARE_TRUE;
 341                                 }
 342                                 break;
 343
 344                         case LDAP_FILTER_GE:
 345                                 if ( ret >= 0 ) {
 346                                         return LDAP_COMPARE_TRUE;
 347                                 }
 348                                 break;
 349
 350                         case LDAP_FILTER_LE:
 351                                 if ( ret <= 0 ) {
 352                                         return LDAP_COMPARE_TRUE;
 353                                 }
 354                                 break;
 355                         }
 356                 }
 357         }
 358
 359         return( LDAP_COMPARE_FALSE );
 360 }
 361
 362
 363 static int
 364 test_presence_filter(
 365     Backend     *be,
 366     Connection  *conn,
 367     Operation   *op,
 368     Entry       *e,
 369         AttributeDescription *desc
 370 )
 371 {
 372         if ( !access_allowed( be, conn, op, e, desc, NULL, ACL_SEARCH ) )
 373         {
 374                 return LDAP_INSUFFICIENT_ACCESS;
 375         }
 376
 377         return attrs_find( e->e_attrs, desc ) != NULL
 378                 ? LDAP_COMPARE_TRUE : LDAP_COMPARE_FALSE;
 379 }
 380
 381
 382 static int
 383 test_filter_and(
 384     Backend     *be,
 385     Connection  *conn,
 386     Operation   *op,
 387     Entry       *e,
 388     Filter      *flist
 389 )
 390 {
 391         Filter  *f;
 392         int rtn = LDAP_COMPARE_TRUE; /* True if empty */
 393
 394 #ifdef NEW_LOGGING
 395         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 396                    "test_filter_and: begin\n" ));
 397 #else
 398         Debug( LDAP_DEBUG_FILTER, "=> test_filter_and\n", 0, 0, 0 );
 399 #endif
 400
 401
 402         for ( f = flist; f != NULL; f = f->f_next ) {
 403                 int rc = test_filter( be, conn, op, e, f );
 404
 405                 if ( rc == LDAP_COMPARE_FALSE ) {
 406                         /* filter is False */
 407                         rtn = rc;
 408                         break;
 409                 }
 410
 411                 if ( rc != LDAP_COMPARE_TRUE ) {
 412                         /* filter is Undefined unless later elements are False */
 413                         rtn = rc;
 414                 }
 415         }
 416
 417 #ifdef NEW_LOGGING
 418         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 419                    "test_filter_and:  rc=%d\n", rtn ));
 420 #else
 421         Debug( LDAP_DEBUG_FILTER, "<= test_filter_and %d\n", rtn, 0, 0 );
 422 #endif
 423
 424         return rtn;
 425 }
 426
 427 static int
 428 test_filter_or(
 429     Backend     *be,
 430     Connection  *conn,
 431     Operation   *op,
 432     Entry       *e,
 433     Filter      *flist
 434 )
 435 {
 436         Filter  *f;
 437         int rtn = LDAP_COMPARE_FALSE; /* False if empty */
 438
 439 #ifdef NEW_LOGGING
 440         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 441                    "test_filter_or: begin\n" ));
 442 #else
 443         Debug( LDAP_DEBUG_FILTER, "=> test_filter_or\n", 0, 0, 0 );
 444 #endif
 445
 446
 447         for ( f = flist; f != NULL; f = f->f_next ) {
 448                 int rc = test_filter( be, conn, op, e, f );
 449
 450                 if ( rc == LDAP_COMPARE_TRUE ) {
 451                         /* filter is True */
 452                         rtn = rc;
 453                         break;
 454                 }
 455
 456                 if ( rc != LDAP_COMPARE_FALSE ) {
 457                         /* filter is Undefined unless later elements are True */
 458                         rtn = rc;
 459                 }
 460         }
 461
 462 #ifdef NEW_LOGGING
 463         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 464                    "test_filter_or: result=%d\n", rtn ));
 465 #else
 466         Debug( LDAP_DEBUG_FILTER, "<= test_filter_or %d\n", rtn, 0, 0 );
 467 #endif
 468
 469         return rtn;
 470 }
 471
 472
 473 static int
 474 test_substrings_filter(
 475     Backend     *be,
 476     Connection  *conn,
 477     Operation   *op,
 478     Entry       *e,
 479     Filter      *f
 480 )
 481 {
 482         Attribute       *a;
 483
 484 #ifdef NEW_LOGGING
 485         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 486                    "test_substrings_filter: begin\n" ));
 487 #else
 488         Debug( LDAP_DEBUG_FILTER, "begin test_substrings_filter\n", 0, 0, 0 );
 489 #endif
 490
 491
 492         if ( !access_allowed( be, conn, op, e,
 493                 f->f_sub_desc, NULL, ACL_SEARCH ) )
 494         {
 495                 return LDAP_INSUFFICIENT_ACCESS;
 496         }
 497
 498         for(a = attrs_find( e->e_attrs, f->f_sub_desc );
 499                 a != NULL;
 500                 a = attrs_find( a->a_next, f->f_sub_desc ) )
 501         {
 502                 int i;
 503                 MatchingRule *mr = a->a_desc->ad_type->sat_substr;
 504
 505                 if( mr == NULL ) {
 506                         continue;
 507                 }
 508
 509                 for ( i = 0; a->a_vals[i] != NULL; i++ ) {
 510                         int ret;
 511                         int rc;
 512                         const char *text;
 513
 514                         rc = value_match( &ret, a->a_desc, mr, 0,
 515                                 a->a_vals[i], f->f_sub,
 516                                 &text );
 517
 518                         if( rc != LDAP_SUCCESS ) {
 519                                 return rc;
 520                         }
 521
 522                         if ( ret == 0 ) {
 523                                 return LDAP_COMPARE_TRUE;
 524                         }
 525                 }
 526         }
 527
 528 #ifdef NEW_LOGGING
 529         LDAP_LOG(( "filter", LDAP_LEVEL_ENTRY,
 530                    "test_substrings_filter: return FALSE\n" ));
 531 #else
 532         Debug( LDAP_DEBUG_FILTER, "end test_substrings_filter 1\n", 0, 0, 0 );
 533 #endif
 534
 535         return LDAP_COMPARE_FALSE;
 536 }