1 /* $OpenLDAP: pkg/ldap/servers/slapd/back-sql/delete.c,v 1.35.2.8 2008/02/11 23:26:48 kurt Exp $ */ 2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>. 3 * 4 * Copyright 1999-2008 The OpenLDAP Foundation. 5 * Portions Copyright 1999 Dmitry Kovalev. 6 * Portions Copyright 2002 Pierangelo Masarati. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted only as authorized by the OpenLDAP 11 * Public License. 12 * 13 * A copy of this license is available in the file LICENSE in the 14 * top-level directory of the distribution or, alternatively, at 15 * <http://www.OpenLDAP.org/license.html>. 16 */ 17 /* ACKNOWLEDGEMENTS: 18 * This work was initially developed by Dmitry Kovalev for inclusion 19 * by OpenLDAP Software. Additional significant contributors include 20 * Pierangelo Masarati. 21 */ 22 23 #include "portable.h" 24 25 #include <stdio.h> 26 #include <sys/types.h> 27 #include "ac/string.h" 28 29 #include "slap.h" 30 #include "proto-sql.h" 31 32 typedef struct backsql_delete_attr_t { 33 Operation *op; 34 SlapReply *rs; 35 SQLHDBC dbh; 36 backsql_entryID *e_id; 37 } backsql_delete_attr_t; 38 39 static int 40 backsql_delete_attr_f( void *v_at, void *v_bda ) 41 { 42 backsql_at_map_rec *at = (backsql_at_map_rec *)v_at; 43 backsql_delete_attr_t *bda = (backsql_delete_attr_t *)v_bda; 44 int rc; 45 46 rc = backsql_modify_delete_all_values( bda->op, 47 bda->rs, bda->dbh, bda->e_id, at ); 48 49 if ( rc != LDAP_SUCCESS ) { 50 return BACKSQL_AVL_STOP; 51 } 52 53 return BACKSQL_AVL_CONTINUE; 54 } 55 56 static int 57 backsql_delete_all_attrs( 58 Operation *op, 59 SlapReply *rs, 60 SQLHDBC dbh, 61 backsql_entryID *eid ) 62 { 63 backsql_delete_attr_t bda; 64 int rc; 65 66 bda.op = op; 67 bda.rs = rs; 68 bda.dbh = dbh; 69 bda.e_id = eid; 70 71 rc = avl_apply( eid->eid_oc->bom_attrs, backsql_delete_attr_f, &bda, 72 BACKSQL_AVL_STOP, AVL_INORDER ); 73 if ( rc == BACKSQL_AVL_STOP ) { 74 return rs->sr_err; 75 } 76 77 return LDAP_SUCCESS; 78 } 79 80 static int 81 backsql_delete_int( 82 Operation *op, 83 SlapReply *rs, 84 SQLHDBC dbh, 85 SQLHSTMT *sthp, 86 backsql_entryID *eid, 87 Entry **ep ) 88 { 89 backsql_info *bi = (backsql_info*)op->o_bd->be_private; 90 SQLHSTMT sth = SQL_NULL_HSTMT; 91 RETCODE rc; 92 int prc = LDAP_SUCCESS; 93 /* first parameter no */ 94 SQLUSMALLINT pno = 0; 95 96 sth = *sthp; 97 98 /* avl_apply ... */ 99 rs->sr_err = backsql_delete_all_attrs( op, rs, dbh, eid ); 100 if ( rs->sr_err != LDAP_SUCCESS ) { 101 goto done; 102 } 103 104 rc = backsql_Prepare( dbh, &sth, eid->eid_oc->bom_delete_proc, 0 ); 105 if ( rc != SQL_SUCCESS ) { 106 Debug( LDAP_DEBUG_TRACE, 107 " backsql_delete(): " 108 "error preparing delete query\n", 109 0, 0, 0 ); 110 backsql_PrintErrors( bi->sql_db_env, dbh, sth, rc ); 111 112 rs->sr_err = LDAP_OTHER; 113 rs->sr_text = "SQL-backend error"; 114 *ep = NULL; 115 goto done; 116 } 117 118 if ( BACKSQL_IS_DEL( eid->eid_oc->bom_expect_return ) ) { 119 pno = 1; 120 rc = backsql_BindParamInt( sth, 1, SQL_PARAM_OUTPUT, &prc ); 121 if ( rc != SQL_SUCCESS ) { 122 Debug( LDAP_DEBUG_TRACE, 123 " backsql_delete(): " 124 "error binding output parameter for objectClass %s\n", 125 eid->eid_oc->bom_oc->soc_cname.bv_val, 0, 0 ); 126 backsql_PrintErrors( bi->sql_db_env, dbh, 127 sth, rc ); 128 SQLFreeStmt( sth, SQL_DROP ); 129 130 rs->sr_text = "SQL-backend error"; 131 rs->sr_err = LDAP_OTHER; 132 *ep = NULL; 133 goto done; 134 } 135 } 136 137 rc = backsql_BindParamID( sth, pno + 1, SQL_PARAM_INPUT, &eid->eid_keyval ); 138 if ( rc != SQL_SUCCESS ) { 139 Debug( LDAP_DEBUG_TRACE, 140 " backsql_delete(): " 141 "error binding keyval parameter for objectClass %s\n", 142 eid->eid_oc->bom_oc->soc_cname.bv_val, 0, 0 ); 143 backsql_PrintErrors( bi->sql_db_env, dbh, 144 sth, rc ); 145 SQLFreeStmt( sth, SQL_DROP ); 146 147 rs->sr_text = "SQL-backend error"; 148 rs->sr_err = LDAP_OTHER; 149 *ep = NULL; 150 goto done; 151 } 152 153 rc = SQLExecute( sth ); 154 if ( rc == SQL_SUCCESS && prc == LDAP_SUCCESS ) { 155 rs->sr_err = LDAP_SUCCESS; 156 157 } else { 158 Debug( LDAP_DEBUG_TRACE, " backsql_delete(): " 159 "delete_proc execution failed (rc=%d, prc=%d)\n", 160 rc, prc, 0 ); 161 162 163 if ( prc != LDAP_SUCCESS ) { 164 /* SQL procedure executed fine 165 * but returned an error */ 166 rs->sr_err = BACKSQL_SANITIZE_ERROR( prc ); 167 168 } else { 169 backsql_PrintErrors( bi->sql_db_env, dbh, 170 sth, rc ); 171 rs->sr_err = LDAP_OTHER; 172 } 173 SQLFreeStmt( sth, SQL_DROP ); 174 goto done; 175 } 176 SQLFreeStmt( sth, SQL_DROP ); 177 178 /* delete "auxiliary" objectClasses, if any... */ 179 rc = backsql_Prepare( dbh, &sth, bi->sql_delobjclasses_stmt, 0 ); 180 if ( rc != SQL_SUCCESS ) { 181 Debug( LDAP_DEBUG_TRACE, 182 " backsql_delete(): " 183 "error preparing ldap_entry_objclasses delete query\n", 184 0, 0, 0 ); 185 backsql_PrintErrors( bi->sql_db_env, dbh, sth, rc ); 186 187 rs->sr_err = LDAP_OTHER; 188 rs->sr_text = "SQL-backend error"; 189 *ep = NULL; 190 goto done; 191 } 192 193 rc = backsql_BindParamID( sth, 1, SQL_PARAM_INPUT, &eid->eid_id ); 194 if ( rc != SQL_SUCCESS ) { 195 Debug( LDAP_DEBUG_TRACE, 196 " backsql_delete(): " 197 "error binding auxiliary objectClasses " 198 "entry ID parameter for objectClass %s\n", 199 eid->eid_oc->bom_oc->soc_cname.bv_val, 0, 0 ); 200 backsql_PrintErrors( bi->sql_db_env, dbh, 201 sth, rc ); 202 SQLFreeStmt( sth, SQL_DROP ); 203 204 rs->sr_text = "SQL-backend error"; 205 rs->sr_err = LDAP_OTHER; 206 *ep = NULL; 207 goto done; 208 } 209 210 rc = SQLExecute( sth ); 211 switch ( rc ) { 212 case SQL_NO_DATA: 213 /* apparently there were no "auxiliary" objectClasses 214 * for this entry... */ 215 case SQL_SUCCESS: 216 break; 217 218 default: 219 Debug( LDAP_DEBUG_TRACE, " backsql_delete(): " 220 "failed to delete record from ldap_entry_objclasses\n", 221 0, 0, 0 ); 222 backsql_PrintErrors( bi->sql_db_env, dbh, sth, rc ); 223 SQLFreeStmt( sth, SQL_DROP ); 224 rs->sr_err = LDAP_OTHER; 225 rs->sr_text = "SQL-backend error"; 226 *ep = NULL; 227 goto done; 228 } 229 SQLFreeStmt( sth, SQL_DROP ); 230 231 /* delete entry... */ 232 rc = backsql_Prepare( dbh, &sth, bi->sql_delentry_stmt, 0 ); 233 if ( rc != SQL_SUCCESS ) { 234 Debug( LDAP_DEBUG_TRACE, 235 " backsql_delete(): " 236 "error preparing ldap_entries delete query\n", 237 0, 0, 0 ); 238 backsql_PrintErrors( bi->sql_db_env, dbh, sth, rc ); 239 240 rs->sr_err = LDAP_OTHER; 241 rs->sr_text = "SQL-backend error"; 242 *ep = NULL; 243 goto done; 244 } 245 246 rc = backsql_BindParamID( sth, 1, SQL_PARAM_INPUT, &eid->eid_id ); 247 if ( rc != SQL_SUCCESS ) { 248 Debug( LDAP_DEBUG_TRACE, 249 " backsql_delete(): " 250 "error binding entry ID parameter " 251 "for objectClass %s\n", 252 eid->eid_oc->bom_oc->soc_cname.bv_val, 0, 0 ); 253 backsql_PrintErrors( bi->sql_db_env, dbh, 254 sth, rc ); 255 SQLFreeStmt( sth, SQL_DROP ); 256 257 rs->sr_text = "SQL-backend error"; 258 rs->sr_err = LDAP_OTHER; 259 *ep = NULL; 260 goto done; 261 } 262 263 rc = SQLExecute( sth ); 264 if ( rc != SQL_SUCCESS ) { 265 Debug( LDAP_DEBUG_TRACE, " backsql_delete(): " 266 "failed to delete record from ldap_entries\n", 267 0, 0, 0 ); 268 backsql_PrintErrors( bi->sql_db_env, dbh, sth, rc ); 269 SQLFreeStmt( sth, SQL_DROP ); 270 rs->sr_err = LDAP_OTHER; 271 rs->sr_text = "SQL-backend error"; 272 *ep = NULL; 273 goto done; 274 } 275 SQLFreeStmt( sth, SQL_DROP ); 276 277 rs->sr_err = LDAP_SUCCESS; 278 *ep = NULL; 279 280 done:; 281 *sthp = sth; 282 283 return rs->sr_err; 284 } 285 286 typedef struct backsql_tree_delete_t { 287 Operation *btd_op; 288 int btd_rc; 289 backsql_entryID *btd_eid; 290 } backsql_tree_delete_t; 291 292 static int 293 backsql_tree_delete_search_cb( Operation *op, SlapReply *rs ) 294 { 295 if ( rs->sr_type == REP_SEARCH ) { 296 backsql_tree_delete_t *btd; 297 backsql_entryID *eid; 298 299 btd = (backsql_tree_delete_t *)op->o_callback->sc_private; 300 301 if ( !access_allowed( btd->btd_op, rs->sr_entry, 302 slap_schema.si_ad_entry, NULL, ACL_WDEL, NULL ) 303 || !access_allowed( btd->btd_op, rs->sr_entry, 304 slap_schema.si_ad_children, NULL, ACL_WDEL, NULL ) ) 305 { 306 btd->btd_rc = LDAP_INSUFFICIENT_ACCESS; 307 return rs->sr_err = LDAP_UNAVAILABLE; 308 } 309 310 assert( rs->sr_entry != NULL ); 311 assert( rs->sr_entry->e_private != NULL ); 312 313 eid = (backsql_entryID *)rs->sr_entry->e_private; 314 assert( eid->eid_oc != NULL ); 315 if ( eid->eid_oc == NULL || eid->eid_oc->bom_delete_proc == NULL ) { 316 btd->btd_rc = LDAP_UNWILLING_TO_PERFORM; 317 return rs->sr_err = LDAP_UNAVAILABLE; 318 } 319 320 eid = backsql_entryID_dup( eid, op->o_tmpmemctx ); 321 eid->eid_next = btd->btd_eid; 322 btd->btd_eid = eid; 323 } 324 325 return 0; 326 } 327 328 static int 329 backsql_tree_delete( 330 Operation *op, 331 SlapReply *rs, 332 SQLHDBC dbh, 333 SQLHSTMT *sthp ) 334 { 335 Operation op2 = *op; 336 slap_callback sc = { 0 }; 337 SlapReply rs2 = { 0 }; 338 backsql_tree_delete_t btd = { 0 }; 339 340 int rc; 341 342 /* 343 * - perform an internal subtree search as the rootdn 344 * - for each entry 345 * - check access 346 * - check objectClass and delete method(s) 347 * - for each entry 348 * - delete 349 * - if successful, commit 350 */ 351 352 op2.o_tag = LDAP_REQ_SEARCH; 353 op2.o_protocol = LDAP_VERSION3; 354 355 btd.btd_op = op; 356 sc.sc_private = &btd; 357 sc.sc_response = backsql_tree_delete_search_cb; 358 op2.o_callback = ≻ 359 360 op2.o_dn = op->o_bd->be_rootdn; 361 op2.o_ndn = op->o_bd->be_rootndn; 362 363 op2.o_managedsait = SLAP_CONTROL_CRITICAL; 364 365 op2.ors_scope = LDAP_SCOPE_SUBTREE; 366 op2.ors_deref = LDAP_DEREF_NEVER; 367 op2.ors_slimit = SLAP_NO_LIMIT; 368 op2.ors_tlimit = SLAP_NO_LIMIT; 369 op2.ors_filter = (Filter *)slap_filter_objectClass_pres; 370 op2.ors_filterstr = *slap_filterstr_objectClass_pres; 371 op2.ors_attrs = slap_anlist_all_attributes; 372 op2.ors_attrsonly = 0; 373 374 rc = op->o_bd->be_search( &op2, &rs2 ); 375 if ( rc != LDAP_SUCCESS ) { 376 rc = rs->sr_err = btd.btd_rc; 377 rs->sr_text = "subtree delete not possible"; 378 send_ldap_result( op, rs ); 379 goto clean; 380 } 381 382 for ( ; btd.btd_eid != NULL; 383 btd.btd_eid = backsql_free_entryID( btd.btd_eid, 384 1, op->o_tmpmemctx ) ) 385 { 386 Entry *e = (void *)0xbad; 387 rc = backsql_delete_int( op, rs, dbh, sthp, btd.btd_eid, &e ); 388 if ( rc != LDAP_SUCCESS ) { 389 break; 390 } 391 } 392 393 clean:; 394 for ( ; btd.btd_eid != NULL; 395 btd.btd_eid = backsql_free_entryID( btd.btd_eid, 396 1, op->o_tmpmemctx ) ) 397 ; 398 399 return rc; 400 } 401 402 int 403 backsql_delete( Operation *op, SlapReply *rs ) 404 { 405 SQLHDBC dbh = SQL_NULL_HDBC; 406 SQLHSTMT sth = SQL_NULL_HSTMT; 407 backsql_oc_map_rec *oc = NULL; 408 backsql_srch_info bsi = { 0 }; 409 backsql_entryID e_id = { 0 }; 410 Entry d = { 0 }, p = { 0 }, *e = NULL; 411 struct berval pdn = BER_BVNULL; 412 int manageDSAit = get_manageDSAit( op ); 413 414 Debug( LDAP_DEBUG_TRACE, "==>backsql_delete(): deleting entry \"%s\"\n", 415 op->o_req_ndn.bv_val, 0, 0 ); 416 417 rs->sr_err = backsql_get_db_conn( op, &dbh ); 418 if ( rs->sr_err != LDAP_SUCCESS ) { 419 Debug( LDAP_DEBUG_TRACE, " backsql_delete(): " 420 "could not get connection handle - exiting\n", 421 0, 0, 0 ); 422 rs->sr_text = ( rs->sr_err == LDAP_OTHER ) 423 ? "SQL-backend error" : NULL; 424 e = NULL; 425 goto done; 426 } 427 428 /* 429 * Get the entry 430 */ 431 bsi.bsi_e = &d; 432 rs->sr_err = backsql_init_search( &bsi, &op->o_req_ndn, 433 LDAP_SCOPE_BASE, 434 (time_t)(-1), NULL, dbh, op, rs, slap_anlist_no_attrs, 435 ( BACKSQL_ISF_MATCHED | BACKSQL_ISF_GET_ENTRY | BACKSQL_ISF_GET_OC ) ); 436 switch ( rs->sr_err ) { 437 case LDAP_SUCCESS: 438 break; 439 440 case LDAP_REFERRAL: 441 if ( manageDSAit && !BER_BVISNULL( &bsi.bsi_e->e_nname ) && 442 dn_match( &op->o_req_ndn, &bsi.bsi_e->e_nname ) ) 443 { 444 rs->sr_err = LDAP_SUCCESS; 445 rs->sr_text = NULL; 446 rs->sr_matched = NULL; 447 if ( rs->sr_ref ) { 448 ber_bvarray_free( rs->sr_ref ); 449 rs->sr_ref = NULL; 450 } 451 break; 452 } 453 e = &d; 454 /* fallthru */ 455 456 default: 457 Debug( LDAP_DEBUG_TRACE, "backsql_delete(): " 458 "could not retrieve deleteDN ID - no such entry\n", 459 0, 0, 0 ); 460 if ( !BER_BVISNULL( &d.e_nname ) ) { 461 /* FIXME: should always be true! */ 462 e = &d; 463 464 } else { 465 e = NULL; 466 } 467 goto done; 468 } 469 470 if ( get_assert( op ) && 471 ( test_filter( op, &d, get_assertion( op ) ) 472 != LDAP_COMPARE_TRUE ) ) 473 { 474 rs->sr_err = LDAP_ASSERTION_FAILED; 475 e = &d; 476 goto done; 477 } 478 479 if ( !access_allowed( op, &d, slap_schema.si_ad_entry, 480 NULL, ACL_WDEL, NULL ) ) 481 { 482 Debug( LDAP_DEBUG_TRACE, " backsql_delete(): " 483 "no write access to entry\n", 484 0, 0, 0 ); 485 rs->sr_err = LDAP_INSUFFICIENT_ACCESS; 486 e = &d; 487 goto done; 488 } 489 490 rs->sr_err = backsql_has_children( op, dbh, &op->o_req_ndn ); 491 switch ( rs->sr_err ) { 492 case LDAP_COMPARE_FALSE: 493 rs->sr_err = LDAP_SUCCESS; 494 break; 495 496 case LDAP_COMPARE_TRUE: 497 #ifdef SLAP_CONTROL_X_TREE_DELETE 498 if ( get_treeDelete( op ) ) { 499 rs->sr_err = LDAP_SUCCESS; 500 break; 501 } 502 #endif /* SLAP_CONTROL_X_TREE_DELETE */ 503 504 Debug( LDAP_DEBUG_TRACE, " backsql_delete(): " 505 "entry \"%s\" has children\n", 506 op->o_req_dn.bv_val, 0, 0 ); 507 rs->sr_err = LDAP_NOT_ALLOWED_ON_NONLEAF; 508 rs->sr_text = "subordinate objects must be deleted first"; 509 /* fallthru */ 510 511 default: 512 e = &d; 513 goto done; 514 } 515 516 assert( bsi.bsi_base_id.eid_oc != NULL ); 517 oc = bsi.bsi_base_id.eid_oc; 518 if ( oc->bom_delete_proc == NULL ) { 519 Debug( LDAP_DEBUG_TRACE, " backsql_delete(): " 520 "delete procedure is not defined " 521 "for this objectclass - aborting\n", 0, 0, 0 ); 522 rs->sr_err = LDAP_UNWILLING_TO_PERFORM; 523 rs->sr_text = "operation not permitted within namingContext"; 524 e = NULL; 525 goto done; 526 } 527 528 /* 529 * Get the parent 530 */ 531 e_id = bsi.bsi_base_id; 532 memset( &bsi.bsi_base_id, 0, sizeof( bsi.bsi_base_id ) ); 533 if ( !be_issuffix( op->o_bd, &op->o_req_ndn ) ) { 534 dnParent( &op->o_req_ndn, &pdn ); 535 bsi.bsi_e = &p; 536 rs->sr_err = backsql_init_search( &bsi, &pdn, 537 LDAP_SCOPE_BASE, 538 (time_t)(-1), NULL, dbh, op, rs, 539 slap_anlist_no_attrs, 540 BACKSQL_ISF_GET_ENTRY ); 541 if ( rs->sr_err != LDAP_SUCCESS ) { 542 Debug( LDAP_DEBUG_TRACE, "backsql_delete(): " 543 "could not retrieve deleteDN ID " 544 "- no such entry\n", 545 0, 0, 0 ); 546 e = &p; 547 goto done; 548 } 549 550 (void)backsql_free_entryID( &bsi.bsi_base_id, 0, op->o_tmpmemctx ); 551 552 /* check parent for "children" acl */ 553 if ( !access_allowed( op, &p, slap_schema.si_ad_children, 554 NULL, ACL_WDEL, NULL ) ) 555 { 556 Debug( LDAP_DEBUG_TRACE, " backsql_delete(): " 557 "no write access to parent\n", 558 0, 0, 0 ); 559 rs->sr_err = LDAP_INSUFFICIENT_ACCESS; 560 e = &p; 561 goto done; 562 563 } 564 } 565 566 e = &d; 567 #ifdef SLAP_CONTROL_X_TREE_DELETE 568 if ( get_treeDelete( op ) ) { 569 backsql_tree_delete( op, rs, dbh, &sth ); 570 if ( rs->sr_err == LDAP_OTHER || rs->sr_err == LDAP_SUCCESS ) 571 { 572 e = NULL; 573 } 574 575 } else 576 #endif /* SLAP_CONTROL_X_TREE_DELETE */ 577 { 578 backsql_delete_int( op, rs, dbh, &sth, &e_id, &e ); 579 } 580 581 /* 582 * Commit only if all operations succeed 583 */ 584 if ( sth != SQL_NULL_HSTMT ) { 585 SQLUSMALLINT CompletionType = SQL_ROLLBACK; 586 587 if ( rs->sr_err == LDAP_SUCCESS && !op->o_noop ) { 588 assert( e == NULL ); 589 CompletionType = SQL_COMMIT; 590 } 591 592 SQLTransact( SQL_NULL_HENV, dbh, CompletionType ); 593 } 594 595 done:; 596 if ( e != NULL ) { 597 if ( !access_allowed( op, e, slap_schema.si_ad_entry, NULL, 598 ACL_DISCLOSE, NULL ) ) 599 { 600 rs->sr_err = LDAP_NO_SUCH_OBJECT; 601 rs->sr_text = NULL; 602 rs->sr_matched = NULL; 603 if ( rs->sr_ref ) { 604 ber_bvarray_free( rs->sr_ref ); 605 rs->sr_ref = NULL; 606 } 607 } 608 } 609 610 if ( op->o_noop && rs->sr_err == LDAP_SUCCESS ) { 611 rs->sr_err = LDAP_X_NO_OPERATION; 612 } 613 614 send_ldap_result( op, rs ); 615 616 Debug( LDAP_DEBUG_TRACE, "<==backsql_delete()\n", 0, 0, 0 ); 617 618 if ( !BER_BVISNULL( &e_id.eid_ndn ) ) { 619 (void)backsql_free_entryID( &e_id, 0, op->o_tmpmemctx ); 620 } 621 622 if ( !BER_BVISNULL( &d.e_nname ) ) { 623 backsql_entry_clean( op, &d ); 624 } 625 626 if ( !BER_BVISNULL( &p.e_nname ) ) { 627 backsql_entry_clean( op, &p ); 628 } 629 630 if ( rs->sr_ref ) { 631 ber_bvarray_free( rs->sr_ref ); 632 rs->sr_ref = NULL; 633 } 634 635 return rs->sr_err; 636 } 637 638