1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * Database related utility routines 28 */ 29 30 #include <stdio.h> 31 #include <stdlib.h> 32 #include <string.h> 33 #include <errno.h> 34 #include <sys/types.h> 35 #include <sys/stat.h> 36 #include <rpc/rpc.h> 37 #include <sys/sid.h> 38 #include <time.h> 39 #include <pwd.h> 40 #include <grp.h> 41 #include <pthread.h> 42 #include <assert.h> 43 #include <sys/u8_textprep.h> 44 45 #include "idmapd.h" 46 #include "adutils.h" 47 #include "string.h" 48 #include "idmap_priv.h" 49 #include "schema.h" 50 #include "nldaputils.h" 51 52 53 static idmap_retcode sql_compile_n_step_once(sqlite *, char *, 54 sqlite_vm **, int *, int, const char ***); 55 static idmap_retcode ad_lookup_one(lookup_state_t *, idmap_mapping *, 56 idmap_id_res *); 57 static idmap_retcode lookup_localsid2pid(idmap_mapping *, idmap_id_res *); 58 static idmap_retcode lookup_cache_name2sid(sqlite *, const char *, 59 const char *, char **, char **, idmap_rid_t *, int *); 60 61 62 #define EMPTY_NAME(name) (*name == 0 || strcmp(name, "\"\"") == 0) 63 64 #define DO_NOT_ALLOC_NEW_ID_MAPPING(req)\ 65 (req->flag & IDMAP_REQ_FLG_NO_NEW_ID_ALLOC) 66 67 #define AVOID_NAMESERVICE(req)\ 68 (req->flag & IDMAP_REQ_FLG_NO_NAMESERVICE) 69 70 #define ALLOW_WK_OR_LOCAL_SIDS_ONLY(req)\ 71 (req->flag & IDMAP_REQ_FLG_WK_OR_LOCAL_SIDS_ONLY) 72 73 #define IS_EPHEMERAL(pid) (pid > INT32_MAX && pid != SENTINEL_PID) 74 75 #define LOCALRID_MIN 1000 76 77 78 typedef enum init_db_option { 79 FAIL_IF_CORRUPT = 0, 80 REMOVE_IF_CORRUPT = 1 81 } init_db_option_t; 82 83 /* 84 * Data structure to store well-known SIDs and 85 * associated mappings (if any) 86 */ 87 typedef struct wksids_table { 88 const char *sidprefix; 89 uint32_t rid; 90 const char *winname; 91 int is_wuser; 92 uid_t pid; 93 int is_user; 94 int direction; 95 } wksids_table_t; 96 97 /* 98 * Thread specfic data to hold the database handles so that the 99 * databaes are not opened and closed for every request. It also 100 * contains the sqlite busy handler structure. 101 */ 102 103 struct idmap_busy { 104 const char *name; 105 const int *delays; 106 int delay_size; 107 int total; 108 int sec; 109 }; 110 111 112 typedef struct idmap_tsd { 113 sqlite *db_db; 114 sqlite *cache_db; 115 struct idmap_busy cache_busy; 116 struct idmap_busy db_busy; 117 } idmap_tsd_t; 118 119 120 121 static const int cache_delay_table[] = 122 { 1, 2, 5, 10, 15, 20, 25, 30, 35, 40, 123 50, 50, 60, 70, 80, 90, 100}; 124 125 static const int db_delay_table[] = 126 { 5, 10, 15, 20, 30, 40, 55, 70, 100}; 127 128 129 static pthread_key_t idmap_tsd_key; 130 131 void 132 idmap_tsd_destroy(void *key) 133 { 134 135 idmap_tsd_t *tsd = (idmap_tsd_t *)key; 136 if (tsd) { 137 if (tsd->db_db) 138 (void) sqlite_close(tsd->db_db); 139 if (tsd->cache_db) 140 (void) sqlite_close(tsd->cache_db); 141 free(tsd); 142 } 143 } 144 145 int 146 idmap_init_tsd_key(void) 147 { 148 return (pthread_key_create(&idmap_tsd_key, idmap_tsd_destroy)); 149 } 150 151 152 153 idmap_tsd_t * 154 idmap_get_tsd(void) 155 { 156 idmap_tsd_t *tsd; 157 158 if ((tsd = pthread_getspecific(idmap_tsd_key)) == NULL) { 159 /* No thread specific data so create it */ 160 if ((tsd = malloc(sizeof (*tsd))) != NULL) { 161 /* Initialize thread specific data */ 162 (void) memset(tsd, 0, sizeof (*tsd)); 163 /* save the trhread specific data */ 164 if (pthread_setspecific(idmap_tsd_key, tsd) != 0) { 165 /* Can't store key */ 166 free(tsd); 167 tsd = NULL; 168 } 169 } else { 170 tsd = NULL; 171 } 172 } 173 174 return (tsd); 175 } 176 177 /* 178 * A simple wrapper around u8_textprep_str() that returns the Unicode 179 * lower-case version of some string. The result must be freed. 180 */ 181 char * 182 tolower_u8(const char *s) 183 { 184 char *res = NULL; 185 char *outs; 186 size_t inlen, outlen, inbytesleft, outbytesleft; 187 int rc, err; 188 189 /* 190 * u8_textprep_str() does not allocate memory. The input and 191 * output buffers may differ in size (though that would be more 192 * likely when normalization is done). We have to loop over it... 193 * 194 * To improve the chances that we can avoid looping we add 10 195 * bytes of output buffer room the first go around. 196 */ 197 inlen = inbytesleft = strlen(s); 198 outlen = outbytesleft = inlen + 10; 199 if ((res = malloc(outlen)) == NULL) 200 return (NULL); 201 outs = res; 202 203 while ((rc = u8_textprep_str((char *)s, &inbytesleft, outs, 204 &outbytesleft, U8_TEXTPREP_TOLOWER, U8_UNICODE_LATEST, &err)) < 0 && 205 err == E2BIG) { 206 if ((res = realloc(res, outlen + inbytesleft)) == NULL) 207 return (NULL); 208 /* adjust input/output buffer pointers */ 209 s += (inlen - inbytesleft); 210 outs = res + outlen - outbytesleft; 211 /* adjust outbytesleft and outlen */ 212 outlen += inbytesleft; 213 outbytesleft += inbytesleft; 214 } 215 216 if (rc < 0) { 217 free(res); 218 res = NULL; 219 return (NULL); 220 } 221 222 res[outlen - outbytesleft] = '\0'; 223 224 return (res); 225 } 226 227 static int sql_exec_tran_no_cb(sqlite *db, char *sql, const char *dbname, 228 const char *while_doing); 229 230 231 /* 232 * Initialize 'dbname' using 'sql' 233 */ 234 static 235 int 236 init_db_instance(const char *dbname, int version, 237 const char *detect_version_sql, char * const *sql, 238 init_db_option_t opt, int *created, int *upgraded) 239 { 240 int rc, curr_version; 241 int tries = 1; 242 int prio = LOG_NOTICE; 243 sqlite *db = NULL; 244 char *errmsg = NULL; 245 246 *created = 0; 247 *upgraded = 0; 248 249 if (opt == REMOVE_IF_CORRUPT) 250 tries = 3; 251 252 rinse_repeat: 253 if (tries == 0) { 254 idmapdlog(LOG_ERR, "Failed to initialize db %s", dbname); 255 return (-1); 256 } 257 if (tries-- == 1) 258 /* Last try, log errors */ 259 prio = LOG_ERR; 260 261 db = sqlite_open(dbname, 0600, &errmsg); 262 if (db == NULL) { 263 idmapdlog(prio, "Error creating database %s (%s)", 264 dbname, CHECK_NULL(errmsg)); 265 sqlite_freemem(errmsg); 266 if (opt == REMOVE_IF_CORRUPT) 267 (void) unlink(dbname); 268 goto rinse_repeat; 269 } 270 271 sqlite_busy_timeout(db, 3000); 272 273 /* Detect current version of schema in the db, if any */ 274 curr_version = 0; 275 if (detect_version_sql != NULL) { 276 char *end, **results; 277 int nrow; 278 279 #ifdef IDMAPD_DEBUG 280 (void) fprintf(stderr, "Schema version detection SQL: %s\n", 281 detect_version_sql); 282 #endif /* IDMAPD_DEBUG */ 283 rc = sqlite_get_table(db, detect_version_sql, &results, 284 &nrow, NULL, &errmsg); 285 if (rc != SQLITE_OK) { 286 idmapdlog(prio, 287 "Error detecting schema version of db %s (%s)", 288 dbname, errmsg); 289 sqlite_freemem(errmsg); 290 sqlite_free_table(results); 291 sqlite_close(db); 292 return (-1); 293 } 294 if (nrow != 1) { 295 idmapdlog(prio, 296 "Error detecting schema version of db %s", dbname); 297 sqlite_close(db); 298 sqlite_free_table(results); 299 return (-1); 300 } 301 curr_version = strtol(results[1], &end, 10); 302 sqlite_free_table(results); 303 } 304 305 if (curr_version < 0) { 306 if (opt == REMOVE_IF_CORRUPT) 307 (void) unlink(dbname); 308 goto rinse_repeat; 309 } 310 311 if (curr_version == version) 312 goto done; 313 314 /* Install or upgrade schema */ 315 #ifdef IDMAPD_DEBUG 316 (void) fprintf(stderr, "Schema init/upgrade SQL: %s\n", 317 sql[curr_version]); 318 #endif /* IDMAPD_DEBUG */ 319 rc = sql_exec_tran_no_cb(db, sql[curr_version], dbname, 320 (curr_version == 0) ? "installing schema" : "upgrading schema"); 321 if (rc != 0) { 322 idmapdlog(prio, "Error %s schema for db %s", dbname, 323 (curr_version == 0) ? "installing schema" : 324 "upgrading schema"); 325 if (opt == REMOVE_IF_CORRUPT) 326 (void) unlink(dbname); 327 goto rinse_repeat; 328 } 329 330 *upgraded = (curr_version > 0); 331 *created = (curr_version == 0); 332 333 done: 334 (void) sqlite_close(db); 335 return (0); 336 } 337 338 339 /* 340 * This is the SQLite database busy handler that retries the SQL 341 * operation until it is successful. 342 */ 343 int 344 /* LINTED E_FUNC_ARG_UNUSED */ 345 idmap_sqlite_busy_handler(void *arg, const char *table_name, int count) 346 { 347 struct idmap_busy *busy = arg; 348 int delay; 349 struct timespec rqtp; 350 351 if (count == 1) { 352 busy->total = 0; 353 busy->sec = 2; 354 } 355 if (busy->total > 1000 * busy->sec) { 356 idmapdlog(LOG_DEBUG, 357 "Thread %d waited %d sec for the %s database", 358 pthread_self(), busy->sec, busy->name); 359 busy->sec++; 360 } 361 362 if (count <= busy->delay_size) { 363 delay = busy->delays[count-1]; 364 } else { 365 delay = busy->delays[busy->delay_size - 1]; 366 } 367 busy->total += delay; 368 rqtp.tv_sec = 0; 369 rqtp.tv_nsec = delay * (NANOSEC / MILLISEC); 370 (void) nanosleep(&rqtp, NULL); 371 return (1); 372 } 373 374 375 /* 376 * Get the database handle 377 */ 378 idmap_retcode 379 get_db_handle(sqlite **db) 380 { 381 char *errmsg; 382 idmap_tsd_t *tsd; 383 384 /* 385 * Retrieve the db handle from thread-specific storage 386 * If none exists, open and store in thread-specific storage. 387 */ 388 if ((tsd = idmap_get_tsd()) == NULL) { 389 idmapdlog(LOG_ERR, 390 "Error getting thread specific data for %s", IDMAP_DBNAME); 391 return (IDMAP_ERR_MEMORY); 392 } 393 394 if (tsd->db_db == NULL) { 395 tsd->db_db = sqlite_open(IDMAP_DBNAME, 0, &errmsg); 396 if (tsd->db_db == NULL) { 397 idmapdlog(LOG_ERR, "Error opening database %s (%s)", 398 IDMAP_DBNAME, CHECK_NULL(errmsg)); 399 sqlite_freemem(errmsg); 400 return (IDMAP_ERR_DB); 401 } 402 403 tsd->db_busy.name = IDMAP_DBNAME; 404 tsd->db_busy.delays = db_delay_table; 405 tsd->db_busy.delay_size = sizeof (db_delay_table) / 406 sizeof (int); 407 sqlite_busy_handler(tsd->db_db, idmap_sqlite_busy_handler, 408 &tsd->db_busy); 409 } 410 *db = tsd->db_db; 411 return (IDMAP_SUCCESS); 412 } 413 414 /* 415 * Get the cache handle 416 */ 417 idmap_retcode 418 get_cache_handle(sqlite **cache) 419 { 420 char *errmsg; 421 idmap_tsd_t *tsd; 422 423 /* 424 * Retrieve the db handle from thread-specific storage 425 * If none exists, open and store in thread-specific storage. 426 */ 427 if ((tsd = idmap_get_tsd()) == NULL) { 428 idmapdlog(LOG_ERR, "Error getting thread specific data for %s", 429 IDMAP_DBNAME); 430 return (IDMAP_ERR_MEMORY); 431 } 432 433 if (tsd->cache_db == NULL) { 434 tsd->cache_db = sqlite_open(IDMAP_CACHENAME, 0, &errmsg); 435 if (tsd->cache_db == NULL) { 436 idmapdlog(LOG_ERR, "Error opening database %s (%s)", 437 IDMAP_CACHENAME, CHECK_NULL(errmsg)); 438 sqlite_freemem(errmsg); 439 return (IDMAP_ERR_DB); 440 } 441 442 tsd->cache_busy.name = IDMAP_CACHENAME; 443 tsd->cache_busy.delays = cache_delay_table; 444 tsd->cache_busy.delay_size = sizeof (cache_delay_table) / 445 sizeof (int); 446 sqlite_busy_handler(tsd->cache_db, idmap_sqlite_busy_handler, 447 &tsd->cache_busy); 448 } 449 *cache = tsd->cache_db; 450 return (IDMAP_SUCCESS); 451 } 452 453 /* 454 * Initialize cache and db 455 */ 456 int 457 init_dbs() 458 { 459 char *sql[4]; 460 int created, upgraded; 461 462 /* name-based mappings; probably OK to blow away in a pinch(?) */ 463 sql[0] = DB_INSTALL_SQL; 464 sql[1] = DB_UPGRADE_FROM_v1_SQL; 465 sql[2] = NULL; 466 467 if (init_db_instance(IDMAP_DBNAME, DB_VERSION, DB_VERSION_SQL, sql, 468 FAIL_IF_CORRUPT, &created, &upgraded) < 0) 469 return (-1); 470 471 /* mappings, name/SID lookup cache + ephemeral IDs; OK to blow away */ 472 sql[0] = CACHE_INSTALL_SQL; 473 sql[1] = CACHE_UPGRADE_FROM_v1_SQL; 474 sql[2] = CACHE_UPGRADE_FROM_v2_SQL; 475 sql[3] = NULL; 476 477 if (init_db_instance(IDMAP_CACHENAME, CACHE_VERSION, CACHE_VERSION_SQL, 478 sql, REMOVE_IF_CORRUPT, &created, &upgraded) < 0) 479 return (-1); 480 481 _idmapdstate.new_eph_db = (created || upgraded) ? 1 : 0; 482 483 return (0); 484 } 485 486 /* 487 * Finalize databases 488 */ 489 void 490 fini_dbs() 491 { 492 } 493 494 /* 495 * This table is a listing of status codes that will be returned to the 496 * client when a SQL command fails with the corresponding error message. 497 */ 498 static msg_table_t sqlmsgtable[] = { 499 {IDMAP_ERR_U2W_NAMERULE_CONFLICT, 500 "columns unixname, is_user, u2w_order are not unique"}, 501 {IDMAP_ERR_W2U_NAMERULE_CONFLICT, 502 "columns winname, windomain, is_user, is_wuser, w2u_order are not" 503 " unique"}, 504 {IDMAP_ERR_W2U_NAMERULE_CONFLICT, "Conflicting w2u namerules"}, 505 {-1, NULL} 506 }; 507 508 /* 509 * idmapd's version of string2stat to map SQLite messages to 510 * status codes 511 */ 512 idmap_retcode 513 idmapd_string2stat(const char *msg) 514 { 515 int i; 516 for (i = 0; sqlmsgtable[i].msg; i++) { 517 if (strcasecmp(sqlmsgtable[i].msg, msg) == 0) 518 return (sqlmsgtable[i].retcode); 519 } 520 return (IDMAP_ERR_OTHER); 521 } 522 523 /* 524 * Executes some SQL in a transaction. 525 * 526 * Returns 0 on success, -1 if it failed but the rollback succeeded, -2 527 * if the rollback failed. 528 */ 529 static 530 int 531 sql_exec_tran_no_cb(sqlite *db, char *sql, const char *dbname, 532 const char *while_doing) 533 { 534 char *errmsg = NULL; 535 int rc; 536 537 rc = sqlite_exec(db, "BEGIN TRANSACTION;", NULL, NULL, &errmsg); 538 if (rc != SQLITE_OK) { 539 idmapdlog(LOG_ERR, "Begin transaction failed (%s) " 540 "while %s (%s)", errmsg, while_doing, dbname); 541 sqlite_freemem(errmsg); 542 return (-1); 543 } 544 545 rc = sqlite_exec(db, sql, NULL, NULL, &errmsg); 546 if (rc != SQLITE_OK) { 547 idmapdlog(LOG_ERR, "Database error (%s) while %s (%s)", errmsg, 548 while_doing, dbname); 549 sqlite_freemem(errmsg); 550 errmsg = NULL; 551 goto rollback; 552 } 553 554 rc = sqlite_exec(db, "COMMIT TRANSACTION", NULL, NULL, &errmsg); 555 if (rc == SQLITE_OK) { 556 sqlite_freemem(errmsg); 557 return (0); 558 } 559 560 idmapdlog(LOG_ERR, "Database commit error (%s) while s (%s)", 561 errmsg, while_doing, dbname); 562 sqlite_freemem(errmsg); 563 errmsg = NULL; 564 565 rollback: 566 rc = sqlite_exec(db, "ROLLBACK TRANSACTION", NULL, NULL, &errmsg); 567 if (rc != SQLITE_OK) { 568 idmapdlog(LOG_ERR, "Rollback failed (%s) while %s (%s)", 569 errmsg, while_doing, dbname); 570 sqlite_freemem(errmsg); 571 return (-2); 572 } 573 sqlite_freemem(errmsg); 574 575 return (-1); 576 } 577 578 /* 579 * Execute the given SQL statment without using any callbacks 580 */ 581 idmap_retcode 582 sql_exec_no_cb(sqlite *db, const char *dbname, char *sql) 583 { 584 char *errmsg = NULL; 585 int r; 586 idmap_retcode retcode; 587 588 r = sqlite_exec(db, sql, NULL, NULL, &errmsg); 589 assert(r != SQLITE_LOCKED && r != SQLITE_BUSY); 590 591 if (r != SQLITE_OK) { 592 idmapdlog(LOG_ERR, "Database error on %s while executing %s " 593 "(%s)", dbname, sql, CHECK_NULL(errmsg)); 594 retcode = idmapd_string2stat(errmsg); 595 if (errmsg != NULL) 596 sqlite_freemem(errmsg); 597 return (retcode); 598 } 599 600 return (IDMAP_SUCCESS); 601 } 602 603 /* 604 * Generate expression that can be used in WHERE statements. 605 * Examples: 606 * <prefix> <col> <op> <value> <suffix> 607 * "" "unixuser" "=" "foo" "AND" 608 */ 609 idmap_retcode 610 gen_sql_expr_from_rule(idmap_namerule *rule, char **out) 611 { 612 char *s_windomain = NULL, *s_winname = NULL; 613 char *s_unixname = NULL; 614 char *lower_winname; 615 int retcode = IDMAP_SUCCESS; 616 617 if (out == NULL) 618 return (IDMAP_ERR_ARG); 619 620 621 if (!EMPTY_STRING(rule->windomain)) { 622 s_windomain = sqlite_mprintf("AND windomain = %Q ", 623 rule->windomain); 624 if (s_windomain == NULL) { 625 retcode = IDMAP_ERR_MEMORY; 626 goto out; 627 } 628 } 629 630 if (!EMPTY_STRING(rule->winname)) { 631 if ((lower_winname = tolower_u8(rule->winname)) == NULL) 632 lower_winname = rule->winname; 633 s_winname = sqlite_mprintf( 634 "AND winname = %Q AND is_wuser = %d ", 635 lower_winname, rule->is_wuser ? 1 : 0); 636 if (lower_winname != rule->winname) 637 free(lower_winname); 638 if (s_winname == NULL) { 639 retcode = IDMAP_ERR_MEMORY; 640 goto out; 641 } 642 } 643 644 if (!EMPTY_STRING(rule->unixname)) { 645 s_unixname = sqlite_mprintf( 646 "AND unixname = %Q AND is_user = %d ", 647 rule->unixname, rule->is_user ? 1 : 0); 648 if (s_unixname == NULL) { 649 retcode = IDMAP_ERR_MEMORY; 650 goto out; 651 } 652 } 653 654 *out = sqlite_mprintf("%s %s %s", 655 s_windomain ? s_windomain : "", 656 s_winname ? s_winname : "", 657 s_unixname ? s_unixname : ""); 658 659 if (*out == NULL) { 660 retcode = IDMAP_ERR_MEMORY; 661 idmapdlog(LOG_ERR, "Out of memory"); 662 goto out; 663 } 664 665 out: 666 if (s_windomain != NULL) 667 sqlite_freemem(s_windomain); 668 if (s_winname != NULL) 669 sqlite_freemem(s_winname); 670 if (s_unixname != NULL) 671 sqlite_freemem(s_unixname); 672 673 return (retcode); 674 } 675 676 677 678 /* 679 * Generate and execute SQL statement for LIST RPC calls 680 */ 681 idmap_retcode 682 process_list_svc_sql(sqlite *db, const char *dbname, char *sql, uint64_t limit, 683 int flag, list_svc_cb cb, void *result) 684 { 685 list_cb_data_t cb_data; 686 char *errmsg = NULL; 687 int r; 688 idmap_retcode retcode = IDMAP_ERR_INTERNAL; 689 690 (void) memset(&cb_data, 0, sizeof (cb_data)); 691 cb_data.result = result; 692 cb_data.limit = limit; 693 cb_data.flag = flag; 694 695 696 r = sqlite_exec(db, sql, cb, &cb_data, &errmsg); 697 assert(r != SQLITE_LOCKED && r != SQLITE_BUSY); 698 switch (r) { 699 case SQLITE_OK: 700 retcode = IDMAP_SUCCESS; 701 break; 702 703 default: 704 retcode = IDMAP_ERR_INTERNAL; 705 idmapdlog(LOG_ERR, "Database error on %s while executing " 706 "%s (%s)", dbname, sql, CHECK_NULL(errmsg)); 707 break; 708 } 709 if (errmsg != NULL) 710 sqlite_freemem(errmsg); 711 return (retcode); 712 } 713 714 /* 715 * This routine is called by callbacks that process the results of 716 * LIST RPC calls to validate data and to allocate memory for 717 * the result array. 718 */ 719 idmap_retcode 720 validate_list_cb_data(list_cb_data_t *cb_data, int argc, char **argv, 721 int ncol, uchar_t **list, size_t valsize) 722 { 723 size_t nsize; 724 void *tmplist; 725 726 if (cb_data->limit > 0 && cb_data->next == cb_data->limit) 727 return (IDMAP_NEXT); 728 729 if (argc < ncol || argv == NULL) { 730 idmapdlog(LOG_ERR, "Invalid data"); 731 return (IDMAP_ERR_INTERNAL); 732 } 733 734 /* alloc in bulk to reduce number of reallocs */ 735 if (cb_data->next >= cb_data->len) { 736 nsize = (cb_data->len + SIZE_INCR) * valsize; 737 tmplist = realloc(*list, nsize); 738 if (tmplist == NULL) { 739 idmapdlog(LOG_ERR, "Out of memory"); 740 return (IDMAP_ERR_MEMORY); 741 } 742 *list = tmplist; 743 (void) memset(*list + (cb_data->len * valsize), 0, 744 SIZE_INCR * valsize); 745 cb_data->len += SIZE_INCR; 746 } 747 return (IDMAP_SUCCESS); 748 } 749 750 static 751 idmap_retcode 752 get_namerule_order(char *winname, char *windomain, char *unixname, 753 int direction, int is_diagonal, int *w2u_order, int *u2w_order) 754 { 755 *w2u_order = 0; 756 *u2w_order = 0; 757 758 /* 759 * Windows to UNIX lookup order: 760 * 1. winname@domain (or winname) to "" 761 * 2. winname@domain (or winname) to unixname 762 * 3. winname@* to "" 763 * 4. winname@* to unixname 764 * 5. *@domain (or *) to * 765 * 6. *@domain (or *) to "" 766 * 7. *@domain (or *) to unixname 767 * 8. *@* to * 768 * 9. *@* to "" 769 * 10. *@* to unixname 770 * 771 * winname is a special case of winname@domain when domain is the 772 * default domain. Similarly * is a special case of *@domain when 773 * domain is the default domain. 774 * 775 * Note that "" has priority over specific names because "" inhibits 776 * mappings and traditionally deny rules always had higher priority. 777 */ 778 if (direction != IDMAP_DIRECTION_U2W) { 779 /* bi-directional or from windows to unix */ 780 if (winname == NULL) 781 return (IDMAP_ERR_W2U_NAMERULE); 782 else if (unixname == NULL) 783 return (IDMAP_ERR_W2U_NAMERULE); 784 else if (EMPTY_NAME(winname)) 785 return (IDMAP_ERR_W2U_NAMERULE); 786 else if (*winname == '*' && windomain && *windomain == '*') { 787 if (*unixname == '*') 788 *w2u_order = 8; 789 else if (EMPTY_NAME(unixname)) 790 *w2u_order = 9; 791 else /* unixname == name */ 792 *w2u_order = 10; 793 } else if (*winname == '*') { 794 if (*unixname == '*') 795 *w2u_order = 5; 796 else if (EMPTY_NAME(unixname)) 797 *w2u_order = 6; 798 else /* name */ 799 *w2u_order = 7; 800 } else if (windomain != NULL && *windomain == '*') { 801 /* winname == name */ 802 if (*unixname == '*') 803 return (IDMAP_ERR_W2U_NAMERULE); 804 else if (EMPTY_NAME(unixname)) 805 *w2u_order = 3; 806 else /* name */ 807 *w2u_order = 4; 808 } else { 809 /* winname == name && windomain == null or name */ 810 if (*unixname == '*') 811 return (IDMAP_ERR_W2U_NAMERULE); 812 else if (EMPTY_NAME(unixname)) 813 *w2u_order = 1; 814 else /* name */ 815 *w2u_order = 2; 816 } 817 818 } 819 820 /* 821 * 1. unixname to "", non-diagonal 822 * 2. unixname to winname@domain (or winname), non-diagonal 823 * 3. unixname to "", diagonal 824 * 4. unixname to winname@domain (or winname), diagonal 825 * 5. * to *@domain (or *), non-diagonal 826 * 5. * to *@domain (or *), diagonal 827 * 7. * to "" 828 * 8. * to winname@domain (or winname) 829 * 9. * to "", non-diagonal 830 * 10. * to winname@domain (or winname), diagonal 831 */ 832 if (direction != IDMAP_DIRECTION_W2U) { 833 int diagonal = is_diagonal ? 1 : 0; 834 835 /* bi-directional or from unix to windows */ 836 if (unixname == NULL || EMPTY_NAME(unixname)) 837 return (IDMAP_ERR_U2W_NAMERULE); 838 else if (winname == NULL) 839 return (IDMAP_ERR_U2W_NAMERULE); 840 else if (windomain != NULL && *windomain == '*') 841 return (IDMAP_ERR_U2W_NAMERULE); 842 else if (*unixname == '*') { 843 if (*winname == '*') 844 *u2w_order = 5 + diagonal; 845 else if (EMPTY_NAME(winname)) 846 *u2w_order = 7 + 2 * diagonal; 847 else 848 *u2w_order = 8 + 2 * diagonal; 849 } else { 850 if (*winname == '*') 851 return (IDMAP_ERR_U2W_NAMERULE); 852 else if (EMPTY_NAME(winname)) 853 *u2w_order = 1 + 2 * diagonal; 854 else 855 *u2w_order = 2 + 2 * diagonal; 856 } 857 } 858 return (IDMAP_SUCCESS); 859 } 860 861 /* 862 * Generate and execute SQL statement to add name-based mapping rule 863 */ 864 idmap_retcode 865 add_namerule(sqlite *db, idmap_namerule *rule) 866 { 867 char *sql = NULL; 868 idmap_stat retcode; 869 char *dom = NULL; 870 int w2u_order, u2w_order; 871 char w2ubuf[11], u2wbuf[11]; 872 873 retcode = get_namerule_order(rule->winname, rule->windomain, 874 rule->unixname, rule->direction, 875 rule->is_user == rule->is_wuser ? 0 : 1, &w2u_order, &u2w_order); 876 if (retcode != IDMAP_SUCCESS) 877 goto out; 878 879 if (w2u_order) 880 (void) snprintf(w2ubuf, sizeof (w2ubuf), "%d", w2u_order); 881 if (u2w_order) 882 (void) snprintf(u2wbuf, sizeof (u2wbuf), "%d", u2w_order); 883 884 /* 885 * For the triggers on namerules table to work correctly: 886 * 1) Use NULL instead of 0 for w2u_order and u2w_order 887 * 2) Use "" instead of NULL for "no domain" 888 */ 889 890 if (!EMPTY_STRING(rule->windomain)) 891 dom = rule->windomain; 892 else if (lookup_wksids_name2sid(rule->winname, NULL, NULL, NULL, NULL) 893 == IDMAP_SUCCESS) { 894 /* well-known SIDs don't need domain */ 895 dom = ""; 896 } 897 898 RDLOCK_CONFIG(); 899 if (dom == NULL) { 900 if (_idmapdstate.cfg->pgcfg.default_domain) 901 dom = _idmapdstate.cfg->pgcfg.default_domain; 902 else 903 dom = ""; 904 } 905 sql = sqlite_mprintf("INSERT into namerules " 906 "(is_user, is_wuser, windomain, winname_display, is_nt4, " 907 "unixname, w2u_order, u2w_order) " 908 "VALUES(%d, %d, %Q, %Q, %d, %Q, %q, %q);", 909 rule->is_user ? 1 : 0, rule->is_wuser ? 1 : 0, dom, 910 rule->winname, rule->is_nt4 ? 1 : 0, rule->unixname, 911 w2u_order ? w2ubuf : NULL, u2w_order ? u2wbuf : NULL); 912 UNLOCK_CONFIG(); 913 914 if (sql == NULL) { 915 retcode = IDMAP_ERR_INTERNAL; 916 idmapdlog(LOG_ERR, "Out of memory"); 917 goto out; 918 } 919 920 retcode = sql_exec_no_cb(db, IDMAP_DBNAME, sql); 921 922 if (retcode == IDMAP_ERR_OTHER) 923 retcode = IDMAP_ERR_CFG; 924 925 out: 926 if (sql != NULL) 927 sqlite_freemem(sql); 928 return (retcode); 929 } 930 931 /* 932 * Flush name-based mapping rules 933 */ 934 idmap_retcode 935 flush_namerules(sqlite *db) 936 { 937 idmap_stat retcode; 938 939 retcode = sql_exec_no_cb(db, IDMAP_DBNAME, "DELETE FROM namerules;"); 940 941 return (retcode); 942 } 943 944 /* 945 * Generate and execute SQL statement to remove a name-based mapping rule 946 */ 947 idmap_retcode 948 rm_namerule(sqlite *db, idmap_namerule *rule) 949 { 950 char *sql = NULL; 951 idmap_stat retcode; 952 char buf[80]; 953 char *expr = NULL; 954 955 if (rule->direction < 0 && EMPTY_STRING(rule->windomain) && 956 EMPTY_STRING(rule->winname) && EMPTY_STRING(rule->unixname)) 957 return (IDMAP_SUCCESS); 958 959 buf[0] = 0; 960 961 if (rule->direction == IDMAP_DIRECTION_BI) 962 (void) snprintf(buf, sizeof (buf), "AND w2u_order > 0" 963 " AND u2w_order > 0"); 964 else if (rule->direction == IDMAP_DIRECTION_W2U) 965 (void) snprintf(buf, sizeof (buf), "AND w2u_order > 0" 966 " AND (u2w_order = 0 OR u2w_order ISNULL)"); 967 else if (rule->direction == IDMAP_DIRECTION_U2W) 968 (void) snprintf(buf, sizeof (buf), "AND u2w_order > 0" 969 " AND (w2u_order = 0 OR w2u_order ISNULL)"); 970 971 retcode = gen_sql_expr_from_rule(rule, &expr); 972 if (retcode != IDMAP_SUCCESS) 973 goto out; 974 975 sql = sqlite_mprintf("DELETE FROM namerules WHERE 1 %s %s;", expr, 976 buf); 977 978 if (sql == NULL) { 979 retcode = IDMAP_ERR_INTERNAL; 980 idmapdlog(LOG_ERR, "Out of memory"); 981 goto out; 982 } 983 984 985 retcode = sql_exec_no_cb(db, IDMAP_DBNAME, sql); 986 987 out: 988 if (expr != NULL) 989 sqlite_freemem(expr); 990 if (sql != NULL) 991 sqlite_freemem(sql); 992 return (retcode); 993 } 994 995 /* 996 * Compile the given SQL query and step just once. 997 * 998 * Input: 999 * db - db handle 1000 * sql - SQL statement 1001 * 1002 * Output: 1003 * vm - virtual SQL machine 1004 * ncol - number of columns in the result 1005 * values - column values 1006 * 1007 * Return values: 1008 * IDMAP_SUCCESS 1009 * IDMAP_ERR_NOTFOUND 1010 * IDMAP_ERR_INTERNAL 1011 */ 1012 1013 static 1014 idmap_retcode 1015 sql_compile_n_step_once(sqlite *db, char *sql, sqlite_vm **vm, int *ncol, 1016 int reqcol, const char ***values) 1017 { 1018 char *errmsg = NULL; 1019 int r; 1020 1021 if ((r = sqlite_compile(db, sql, NULL, vm, &errmsg)) != SQLITE_OK) { 1022 idmapdlog(LOG_ERR, "Database error during %s (%s)", sql, 1023 CHECK_NULL(errmsg)); 1024 sqlite_freemem(errmsg); 1025 return (IDMAP_ERR_INTERNAL); 1026 } 1027 1028 r = sqlite_step(*vm, ncol, values, NULL); 1029 assert(r != SQLITE_LOCKED && r != SQLITE_BUSY); 1030 1031 if (r == SQLITE_ROW) { 1032 if (ncol != NULL && *ncol < reqcol) { 1033 (void) sqlite_finalize(*vm, NULL); 1034 *vm = NULL; 1035 return (IDMAP_ERR_INTERNAL); 1036 } 1037 /* Caller will call finalize after using the results */ 1038 return (IDMAP_SUCCESS); 1039 } else if (r == SQLITE_DONE) { 1040 (void) sqlite_finalize(*vm, NULL); 1041 *vm = NULL; 1042 return (IDMAP_ERR_NOTFOUND); 1043 } 1044 1045 (void) sqlite_finalize(*vm, &errmsg); 1046 *vm = NULL; 1047 idmapdlog(LOG_ERR, "Database error during %s (%s)", sql, 1048 CHECK_NULL(errmsg)); 1049 sqlite_freemem(errmsg); 1050 return (IDMAP_ERR_INTERNAL); 1051 } 1052 1053 /* 1054 * Load config in the state. 1055 * 1056 * nm_siduid and nm_sidgid fields: 1057 * state->nm_siduid represents mode used by sid2uid and uid2sid 1058 * requests for directory-based name mappings. Similarly, 1059 * state->nm_sidgid represents mode used by sid2gid and gid2sid 1060 * requests. 1061 * 1062 * sid2uid/uid2sid: 1063 * none -> ds_name_mapping_enabled != true 1064 * AD-mode -> !nldap_winname_attr && ad_unixuser_attr 1065 * nldap-mode -> nldap_winname_attr && !ad_unixuser_attr 1066 * mixed-mode -> nldap_winname_attr && ad_unixuser_attr 1067 * 1068 * sid2gid/gid2sid: 1069 * none -> ds_name_mapping_enabled != true 1070 * AD-mode -> !nldap_winname_attr && ad_unixgroup_attr 1071 * nldap-mode -> nldap_winname_attr && !ad_unixgroup_attr 1072 * mixed-mode -> nldap_winname_attr && ad_unixgroup_attr 1073 */ 1074 idmap_retcode 1075 load_cfg_in_state(lookup_state_t *state) 1076 { 1077 state->nm_siduid = IDMAP_NM_NONE; 1078 state->nm_sidgid = IDMAP_NM_NONE; 1079 RDLOCK_CONFIG(); 1080 1081 state->eph_map_unres_sids = 0; 1082 if (_idmapdstate.cfg->pgcfg.eph_map_unres_sids) 1083 state->eph_map_unres_sids = 1; 1084 1085 if (_idmapdstate.cfg->pgcfg.default_domain != NULL) { 1086 state->defdom = 1087 strdup(_idmapdstate.cfg->pgcfg.default_domain); 1088 if (state->defdom == NULL) { 1089 UNLOCK_CONFIG(); 1090 return (IDMAP_ERR_MEMORY); 1091 } 1092 } else { 1093 UNLOCK_CONFIG(); 1094 return (IDMAP_SUCCESS); 1095 } 1096 if (!_idmapdstate.cfg->pgcfg.ds_name_mapping_enabled) { 1097 UNLOCK_CONFIG(); 1098 return (IDMAP_SUCCESS); 1099 } 1100 if (_idmapdstate.cfg->pgcfg.nldap_winname_attr != NULL) { 1101 state->nm_siduid = 1102 (_idmapdstate.cfg->pgcfg.ad_unixuser_attr != NULL) 1103 ? IDMAP_NM_MIXED : IDMAP_NM_NLDAP; 1104 state->nm_sidgid = 1105 (_idmapdstate.cfg->pgcfg.ad_unixgroup_attr != NULL) 1106 ? IDMAP_NM_MIXED : IDMAP_NM_NLDAP; 1107 } else { 1108 state->nm_siduid = 1109 (_idmapdstate.cfg->pgcfg.ad_unixuser_attr != NULL) 1110 ? IDMAP_NM_AD : IDMAP_NM_NONE; 1111 state->nm_sidgid = 1112 (_idmapdstate.cfg->pgcfg.ad_unixgroup_attr != NULL) 1113 ? IDMAP_NM_AD : IDMAP_NM_NONE; 1114 } 1115 if (_idmapdstate.cfg->pgcfg.ad_unixuser_attr != NULL) { 1116 state->ad_unixuser_attr = 1117 strdup(_idmapdstate.cfg->pgcfg.ad_unixuser_attr); 1118 if (state->ad_unixuser_attr == NULL) { 1119 UNLOCK_CONFIG(); 1120 return (IDMAP_ERR_MEMORY); 1121 } 1122 } 1123 if (_idmapdstate.cfg->pgcfg.ad_unixgroup_attr != NULL) { 1124 state->ad_unixgroup_attr = 1125 strdup(_idmapdstate.cfg->pgcfg.ad_unixgroup_attr); 1126 if (state->ad_unixgroup_attr == NULL) { 1127 UNLOCK_CONFIG(); 1128 return (IDMAP_ERR_MEMORY); 1129 } 1130 } 1131 if (_idmapdstate.cfg->pgcfg.nldap_winname_attr != NULL) { 1132 state->nldap_winname_attr = 1133 strdup(_idmapdstate.cfg->pgcfg.nldap_winname_attr); 1134 if (state->nldap_winname_attr == NULL) { 1135 UNLOCK_CONFIG(); 1136 return (IDMAP_ERR_MEMORY); 1137 } 1138 } 1139 UNLOCK_CONFIG(); 1140 return (IDMAP_SUCCESS); 1141 } 1142 1143 /* 1144 * Set the rule with sepecified values. 1145 * All the strings are copied. 1146 */ 1147 static void 1148 idmap_namerule_set(idmap_namerule *rule, const char *windomain, 1149 const char *winname, const char *unixname, boolean_t is_user, 1150 boolean_t is_wuser, boolean_t is_nt4, int direction) 1151 { 1152 /* 1153 * Only update if they differ because we have to free 1154 * and duplicate the strings 1155 */ 1156 if (rule->windomain == NULL || windomain == NULL || 1157 strcmp(rule->windomain, windomain) != 0) { 1158 if (rule->windomain != NULL) { 1159 free(rule->windomain); 1160 rule->windomain = NULL; 1161 } 1162 if (windomain != NULL) 1163 rule->windomain = strdup(windomain); 1164 } 1165 1166 if (rule->winname == NULL || winname == NULL || 1167 strcmp(rule->winname, winname) != 0) { 1168 if (rule->winname != NULL) { 1169 free(rule->winname); 1170 rule->winname = NULL; 1171 } 1172 if (winname != NULL) 1173 rule->winname = strdup(winname); 1174 } 1175 1176 if (rule->unixname == NULL || unixname == NULL || 1177 strcmp(rule->unixname, unixname) != 0) { 1178 if (rule->unixname != NULL) { 1179 free(rule->unixname); 1180 rule->unixname = NULL; 1181 } 1182 if (unixname != NULL) 1183 rule->unixname = strdup(unixname); 1184 } 1185 1186 rule->is_user = is_user; 1187 rule->is_wuser = is_wuser; 1188 rule->is_nt4 = is_nt4; 1189 rule->direction = direction; 1190 } 1191 1192 1193 /* 1194 * Table for well-known SIDs. 1195 * 1196 * Background: 1197 * 1198 * Some of the well-known principals are stored under: 1199 * cn=WellKnown Security Principals, cn=Configuration, dc=<forestRootDomain> 1200 * They belong to objectClass "foreignSecurityPrincipal". They don't have 1201 * "samAccountName" nor "userPrincipalName" attributes. Their names are 1202 * available in "cn" and "name" attributes. Some of these principals have a 1203 * second entry under CN=ForeignSecurityPrincipals,dc=<forestRootDomain> and 1204 * these duplicate entries have the stringified SID in the "name" and "cn" 1205 * attributes instead of the actual name. 1206 * 1207 * Those of the form S-1-5-32-X are Builtin groups and are stored in the 1208 * cn=builtin container (except, Power Users which is not stored in AD) 1209 * 1210 * These principals are and will remain constant. Therefore doing AD lookups 1211 * provides no benefit. Also, using hard-coded table (and thus avoiding AD 1212 * lookup) improves performance and avoids additional complexity in the 1213 * adutils.c code. Moreover these SIDs can be used when no Active Directory 1214 * is available (such as the CIFS server's "workgroup" mode). 1215 * 1216 * Notes: 1217 * 1. Currently we don't support localization of well-known SID names, 1218 * unlike Windows. 1219 * 1220 * 2. Other well-known SIDs i.e. S-1-5-<domain>-<w-k RID> are not stored 1221 * here. AD does have normal user/group objects for these objects and 1222 * can be looked up using the existing AD lookup code. 1223 * 1224 * 3. See comments above lookup_wksids_sid2pid() for more information 1225 * on how we lookup the wksids table. 1226 */ 1227 static wksids_table_t wksids[] = { 1228 {"S-1-0", 0, "Nobody", 0, SENTINEL_PID, -1, 1}, 1229 {"S-1-1", 0, "Everyone", 0, SENTINEL_PID, -1, -1}, 1230 {"S-1-3", 0, "Creator Owner", 1, IDMAP_WK_CREATOR_OWNER_UID, 1, 0}, 1231 {"S-1-3", 1, "Creator Group", 0, IDMAP_WK_CREATOR_GROUP_GID, 0, 0}, 1232 {"S-1-3", 2, "Creator Owner Server", 1, SENTINEL_PID, -1, -1}, 1233 {"S-1-3", 3, "Creator Group Server", 0, SENTINEL_PID, -1, 1}, 1234 {"S-1-3", 4, "Owner Rights", 0, SENTINEL_PID, -1, -1}, 1235 {"S-1-5", 1, "Dialup", 0, SENTINEL_PID, -1, -1}, 1236 {"S-1-5", 2, "Network", 0, SENTINEL_PID, -1, -1}, 1237 {"S-1-5", 3, "Batch", 0, SENTINEL_PID, -1, -1}, 1238 {"S-1-5", 4, "Interactive", 0, SENTINEL_PID, -1, -1}, 1239 {"S-1-5", 6, "Service", 0, SENTINEL_PID, -1, -1}, 1240 {"S-1-5", 7, "Anonymous Logon", 0, GID_NOBODY, 0, 0}, 1241 {"S-1-5", 7, "Anonymous Logon", 0, UID_NOBODY, 1, 0}, 1242 {"S-1-5", 8, "Proxy", 0, SENTINEL_PID, -1, -1}, 1243 {"S-1-5", 9, "Enterprise Domain Controllers", 0, SENTINEL_PID, -1, -1}, 1244 {"S-1-5", 10, "Self", 0, SENTINEL_PID, -1, -1}, 1245 {"S-1-5", 11, "Authenticated Users", 0, SENTINEL_PID, -1, -1}, 1246 {"S-1-5", 12, "Restricted Code", 0, SENTINEL_PID, -1, -1}, 1247 {"S-1-5", 13, "Terminal Server User", 0, SENTINEL_PID, -1, -1}, 1248 {"S-1-5", 14, "Remote Interactive Logon", 0, SENTINEL_PID, -1, -1}, 1249 {"S-1-5", 15, "This Organization", 0, SENTINEL_PID, -1, -1}, 1250 {"S-1-5", 17, "IUSR", 0, SENTINEL_PID, -1, -1}, 1251 {"S-1-5", 18, "Local System", 0, IDMAP_WK_LOCAL_SYSTEM_GID, 0, 0}, 1252 {"S-1-5", 19, "Local Service", 0, SENTINEL_PID, -1, -1}, 1253 {"S-1-5", 20, "Network Service", 0, SENTINEL_PID, -1, -1}, 1254 {"S-1-5", 1000, "Other Organization", 0, SENTINEL_PID, -1, -1}, 1255 {"S-1-5-32", 544, "Administrators", 0, SENTINEL_PID, -1, -1}, 1256 {"S-1-5-32", 545, "Users", 0, SENTINEL_PID, -1, -1}, 1257 {"S-1-5-32", 546, "Guests", 0, SENTINEL_PID, -1, -1}, 1258 {"S-1-5-32", 547, "Power Users", 0, SENTINEL_PID, -1, -1}, 1259 {"S-1-5-32", 548, "Account Operators", 0, SENTINEL_PID, -1, -1}, 1260 {"S-1-5-32", 549, "Server Operators", 0, SENTINEL_PID, -1, -1}, 1261 {"S-1-5-32", 550, "Print Operators", 0, SENTINEL_PID, -1, -1}, 1262 {"S-1-5-32", 551, "Backup Operators", 0, SENTINEL_PID, -1, -1}, 1263 {"S-1-5-32", 552, "Replicator", 0, SENTINEL_PID, -1, -1}, 1264 {"S-1-5-32", 554, "Pre-Windows 2000 Compatible Access", 0, 1265 SENTINEL_PID, -1, -1}, 1266 {"S-1-5-32", 555, "Remote Desktop Users", 0, SENTINEL_PID, -1, -1}, 1267 {"S-1-5-32", 556, "Network Configuration Operators", 0, 1268 SENTINEL_PID, -1, -1}, 1269 {"S-1-5-32", 557, "Incoming Forest Trust Builders", 0, 1270 SENTINEL_PID, -1, -1}, 1271 {"S-1-5-32", 558, "Performance Monitor Users", 0, SENTINEL_PID, -1, -1}, 1272 {"S-1-5-32", 559, "Performance Log Users", 0, SENTINEL_PID, -1, -1}, 1273 {"S-1-5-32", 560, "Windows Authorization Access Group", 0, 1274 SENTINEL_PID, -1, -1}, 1275 {"S-1-5-32", 561, "Terminal Server License Servers", 0, 1276 SENTINEL_PID, -1, -1}, 1277 {"S-1-5-32", 561, "Distributed COM Users", 0, SENTINEL_PID, -1, -1}, 1278 {"S-1-5-32", 568, "IIS_IUSRS", 0, SENTINEL_PID, -1, -1}, 1279 {"S-1-5-32", 569, "Cryptographic Operators", 0, SENTINEL_PID, -1, -1}, 1280 {"S-1-5-32", 573, "Event Log Readers", 0, SENTINEL_PID, -1, -1}, 1281 {"S-1-5-32", 574, "Certificate Service DCOM Access", 0, 1282 SENTINEL_PID, -1, -1}, 1283 {"S-1-5-64", 21, "Digest Authentication", 0, SENTINEL_PID, -1, -1}, 1284 {"S-1-5-64", 10, "NTLM Authentication", 0, SENTINEL_PID, -1, -1}, 1285 {"S-1-5-64", 14, "SChannel Authentication", 0, SENTINEL_PID, -1, -1}, 1286 {NULL, UINT32_MAX, NULL, -1, SENTINEL_PID, -1, -1} 1287 }; 1288 1289 /* 1290 * Lookup well-known SIDs table either by winname or by SID. 1291 * If the given winname or SID is a well-known SID then we set wksid 1292 * variable and then proceed to see if the SID has a hard mapping to 1293 * a particular UID/GID (Ex: Creator Owner/Creator Group mapped to 1294 * fixed ephemeral ids). If we find such mapping then we return 1295 * success otherwise notfound. If a well-known SID is mapped to 1296 * SENTINEL_PID and the direction field is set (bi-directional or 1297 * win2unix) then we treat it as inhibited mapping and return no 1298 * mapping (Ex. S-1-0-0). 1299 */ 1300 static 1301 idmap_retcode 1302 lookup_wksids_sid2pid(idmap_mapping *req, idmap_id_res *res, int *wksid) 1303 { 1304 int i; 1305 1306 *wksid = 0; 1307 1308 for (i = 0; wksids[i].sidprefix != NULL; i++) { 1309 if (req->id1.idmap_id_u.sid.prefix != NULL) { 1310 if ((strcasecmp(wksids[i].sidprefix, 1311 req->id1.idmap_id_u.sid.prefix) != 0) || 1312 wksids[i].rid != req->id1.idmap_id_u.sid.rid) 1313 /* this is not our SID */ 1314 continue; 1315 if (req->id1name == NULL) { 1316 req->id1name = strdup(wksids[i].winname); 1317 if (req->id1name == NULL) 1318 return (IDMAP_ERR_MEMORY); 1319 } 1320 } else if (req->id1name != NULL) { 1321 if (strcasecmp(wksids[i].winname, req->id1name) != 0) 1322 /* this is not our winname */ 1323 continue; 1324 req->id1.idmap_id_u.sid.prefix = 1325 strdup(wksids[i].sidprefix); 1326 if (req->id1.idmap_id_u.sid.prefix == NULL) 1327 return (IDMAP_ERR_MEMORY); 1328 req->id1.idmap_id_u.sid.rid = wksids[i].rid; 1329 } 1330 1331 *wksid = 1; 1332 req->direction |= _IDMAP_F_DONT_UPDATE_NAMECACHE; 1333 1334 req->id1.idtype = (wksids[i].is_wuser) ? 1335 IDMAP_USID : IDMAP_GSID; 1336 1337 if (wksids[i].pid == SENTINEL_PID) { 1338 if (wksids[i].direction == IDMAP_DIRECTION_BI || 1339 wksids[i].direction == IDMAP_DIRECTION_W2U) 1340 /* Inhibited */ 1341 return (IDMAP_ERR_NOMAPPING); 1342 /* Not mapped */ 1343 if (res->id.idtype == IDMAP_POSIXID) { 1344 res->id.idtype = 1345 (wksids[i].is_wuser) ? 1346 IDMAP_UID : IDMAP_GID; 1347 } 1348 return (IDMAP_ERR_NOTFOUND); 1349 } else if (wksids[i].direction == IDMAP_DIRECTION_U2W) 1350 continue; 1351 1352 switch (res->id.idtype) { 1353 case IDMAP_UID: 1354 if (wksids[i].is_user == 0) 1355 continue; 1356 res->id.idmap_id_u.uid = wksids[i].pid; 1357 res->direction = wksids[i].direction; 1358 res->info.how.map_type = IDMAP_MAP_TYPE_KNOWN_SID; 1359 res->info.src = IDMAP_MAP_SRC_HARD_CODED; 1360 return (IDMAP_SUCCESS); 1361 case IDMAP_GID: 1362 if (wksids[i].is_user == 1) 1363 continue; 1364 res->id.idmap_id_u.gid = wksids[i].pid; 1365 res->direction = wksids[i].direction; 1366 res->info.how.map_type = IDMAP_MAP_TYPE_KNOWN_SID; 1367 res->info.src = IDMAP_MAP_SRC_HARD_CODED; 1368 return (IDMAP_SUCCESS); 1369 case IDMAP_POSIXID: 1370 res->id.idmap_id_u.uid = wksids[i].pid; 1371 res->id.idtype = (!wksids[i].is_user) ? 1372 IDMAP_GID : IDMAP_UID; 1373 res->direction = wksids[i].direction; 1374 res->info.how.map_type = IDMAP_MAP_TYPE_KNOWN_SID; 1375 res->info.src = IDMAP_MAP_SRC_HARD_CODED; 1376 return (IDMAP_SUCCESS); 1377 default: 1378 return (IDMAP_ERR_NOTSUPPORTED); 1379 } 1380 } 1381 return (IDMAP_ERR_NOTFOUND); 1382 } 1383 1384 1385 static 1386 idmap_retcode 1387 lookup_wksids_pid2sid(idmap_mapping *req, idmap_id_res *res, int is_user) 1388 { 1389 int i; 1390 if (req->id1.idmap_id_u.uid == SENTINEL_PID) 1391 return (IDMAP_ERR_NOTFOUND); 1392 for (i = 0; wksids[i].sidprefix != NULL; i++) { 1393 if (wksids[i].pid == req->id1.idmap_id_u.uid && 1394 wksids[i].is_user == is_user && 1395 wksids[i].direction != IDMAP_DIRECTION_W2U) { 1396 if (res->id.idtype == IDMAP_SID) { 1397 res->id.idtype = (wksids[i].is_wuser) ? 1398 IDMAP_USID : IDMAP_GSID; 1399 } 1400 res->id.idmap_id_u.sid.rid = wksids[i].rid; 1401 res->id.idmap_id_u.sid.prefix = 1402 strdup(wksids[i].sidprefix); 1403 if (res->id.idmap_id_u.sid.prefix == NULL) { 1404 idmapdlog(LOG_ERR, "Out of memory"); 1405 return (IDMAP_ERR_MEMORY); 1406 } 1407 res->direction = wksids[i].direction; 1408 res->info.how.map_type = IDMAP_MAP_TYPE_KNOWN_SID; 1409 res->info.src = IDMAP_MAP_SRC_HARD_CODED; 1410 return (IDMAP_SUCCESS); 1411 } 1412 } 1413 return (IDMAP_ERR_NOTFOUND); 1414 } 1415 1416 idmap_retcode 1417 lookup_wksids_name2sid(const char *name, char **canonname, char **sidprefix, 1418 idmap_rid_t *rid, int *type) 1419 { 1420 int i; 1421 1422 if ((strncasecmp(name, "BUILTIN\\", 8) == 0) || 1423 (strncasecmp(name, "BUILTIN/", 8) == 0)) 1424 name += 8; 1425 1426 for (i = 0; wksids[i].sidprefix != NULL; i++) { 1427 if (strcasecmp(wksids[i].winname, name) != 0) 1428 continue; 1429 if (sidprefix != NULL && 1430 (*sidprefix = strdup(wksids[i].sidprefix)) == NULL) { 1431 idmapdlog(LOG_ERR, "Out of memory"); 1432 return (IDMAP_ERR_MEMORY); 1433 } 1434 if (canonname != NULL && 1435 (*canonname = strdup(wksids[i].winname)) == NULL) { 1436 idmapdlog(LOG_ERR, "Out of memory"); 1437 if (sidprefix != NULL) { 1438 free(*sidprefix); 1439 *sidprefix = NULL; 1440 } 1441 return (IDMAP_ERR_MEMORY); 1442 } 1443 if (type != NULL) 1444 *type = (wksids[i].is_wuser) ? 1445 _IDMAP_T_USER : _IDMAP_T_GROUP; 1446 if (rid != NULL) 1447 *rid = wksids[i].rid; 1448 return (IDMAP_SUCCESS); 1449 } 1450 return (IDMAP_ERR_NOTFOUND); 1451 } 1452 1453 static 1454 idmap_retcode 1455 lookup_cache_sid2pid(sqlite *cache, idmap_mapping *req, idmap_id_res *res) 1456 { 1457 char *end; 1458 char *sql = NULL; 1459 const char **values; 1460 sqlite_vm *vm = NULL; 1461 int ncol, is_user; 1462 uid_t pid; 1463 time_t curtime, exp; 1464 idmap_retcode retcode; 1465 char *is_user_string, *lower_name; 1466 1467 /* Current time */ 1468 errno = 0; 1469 if ((curtime = time(NULL)) == (time_t)-1) { 1470 idmapdlog(LOG_ERR, "Failed to get current time (%s)", 1471 strerror(errno)); 1472 retcode = IDMAP_ERR_INTERNAL; 1473 goto out; 1474 } 1475 1476 switch (res->id.idtype) { 1477 case IDMAP_UID: 1478 is_user_string = "1"; 1479 break; 1480 case IDMAP_GID: 1481 is_user_string = "0"; 1482 break; 1483 case IDMAP_POSIXID: 1484 /* the non-diagonal mapping */ 1485 is_user_string = "is_wuser"; 1486 break; 1487 default: 1488 retcode = IDMAP_ERR_NOTSUPPORTED; 1489 goto out; 1490 } 1491 1492 /* SQL to lookup the cache */ 1493 1494 if (req->id1.idmap_id_u.sid.prefix != NULL) { 1495 sql = sqlite_mprintf("SELECT pid, is_user, expiration, " 1496 "unixname, u2w, is_wuser, " 1497 "map_type, map_dn, map_attr, map_value, " 1498 "map_windomain, map_winname, map_unixname, map_is_nt4 " 1499 "FROM idmap_cache WHERE is_user = %s AND " 1500 "sidprefix = %Q AND rid = %u AND w2u = 1 AND " 1501 "(pid >= 2147483648 OR " 1502 "(expiration = 0 OR expiration ISNULL OR " 1503 "expiration > %d));", 1504 is_user_string, req->id1.idmap_id_u.sid.prefix, 1505 req->id1.idmap_id_u.sid.rid, curtime); 1506 } else if (req->id1name != NULL) { 1507 if ((lower_name = tolower_u8(req->id1name)) == NULL) 1508 lower_name = req->id1name; 1509 sql = sqlite_mprintf("SELECT pid, is_user, expiration, " 1510 "unixname, u2w, is_wuser, " 1511 "map_type, map_dn, map_attr, map_value, " 1512 "map_windomain, map_winname, map_unixname, map_is_nt4 " 1513 "FROM idmap_cache WHERE is_user = %s AND " 1514 "winname = %Q AND windomain = %Q AND w2u = 1 AND " 1515 "(pid >= 2147483648 OR " 1516 "(expiration = 0 OR expiration ISNULL OR " 1517 "expiration > %d));", 1518 is_user_string, lower_name, req->id1domain, 1519 curtime); 1520 if (lower_name != req->id1name) 1521 free(lower_name); 1522 } else { 1523 retcode = IDMAP_ERR_ARG; 1524 goto out; 1525 } 1526 if (sql == NULL) { 1527 idmapdlog(LOG_ERR, "Out of memory"); 1528 retcode = IDMAP_ERR_MEMORY; 1529 goto out; 1530 } 1531 retcode = sql_compile_n_step_once(cache, sql, &vm, &ncol, 1532 14, &values); 1533 sqlite_freemem(sql); 1534 1535 if (retcode == IDMAP_ERR_NOTFOUND) { 1536 goto out; 1537 } else if (retcode == IDMAP_SUCCESS) { 1538 /* sanity checks */ 1539 if (values[0] == NULL || values[1] == NULL) { 1540 retcode = IDMAP_ERR_CACHE; 1541 goto out; 1542 } 1543 1544 pid = strtoul(values[0], &end, 10); 1545 is_user = strncmp(values[1], "0", 2) ? 1 : 0; 1546 1547 if (is_user) { 1548 res->id.idtype = IDMAP_UID; 1549 res->id.idmap_id_u.uid = pid; 1550 } else { 1551 res->id.idtype = IDMAP_GID; 1552 res->id.idmap_id_u.gid = pid; 1553 } 1554 1555 /* 1556 * We may have an expired ephemeral mapping. Consider 1557 * the expired entry as valid if we are not going to 1558 * perform name-based mapping. But do not renew the 1559 * expiration. 1560 * If we will be doing name-based mapping then store the 1561 * ephemeral pid in the result so that we can use it 1562 * if we end up doing dynamic mapping again. 1563 */ 1564 if (!DO_NOT_ALLOC_NEW_ID_MAPPING(req) && 1565 !AVOID_NAMESERVICE(req) && 1566 IS_EPHEMERAL(pid) && values[2] != NULL) { 1567 exp = strtoll(values[2], &end, 10); 1568 if (exp && exp <= curtime) { 1569 /* Store the ephemeral pid */ 1570 res->direction = IDMAP_DIRECTION_BI; 1571 req->direction |= is_user 1572 ? _IDMAP_F_EXP_EPH_UID 1573 : _IDMAP_F_EXP_EPH_GID; 1574 retcode = IDMAP_ERR_NOTFOUND; 1575 } 1576 } 1577 } 1578 1579 out: 1580 if (retcode == IDMAP_SUCCESS) { 1581 if (values[4] != NULL) 1582 res->direction = 1583 (strtol(values[4], &end, 10) == 0)? 1584 IDMAP_DIRECTION_W2U:IDMAP_DIRECTION_BI; 1585 else 1586 res->direction = IDMAP_DIRECTION_W2U; 1587 1588 if (values[3] != NULL) { 1589 if (req->id2name != NULL) 1590 free(req->id2name); 1591 req->id2name = strdup(values[3]); 1592 if (req->id2name == NULL) { 1593 idmapdlog(LOG_ERR, "Out of memory"); 1594 retcode = IDMAP_ERR_MEMORY; 1595 } 1596 } 1597 1598 req->id1.idtype = strncmp(values[5], "0", 2) ? 1599 IDMAP_USID : IDMAP_GSID; 1600 1601 if (req->flag & IDMAP_REQ_FLG_MAPPING_INFO) { 1602 res->info.src = IDMAP_MAP_SRC_CACHE; 1603 res->info.how.map_type = strtoul(values[6], &end, 10); 1604 switch (res->info.how.map_type) { 1605 case IDMAP_MAP_TYPE_DS_AD: 1606 res->info.how.idmap_how_u.ad.dn = 1607 strdup(values[7]); 1608 res->info.how.idmap_how_u.ad.attr = 1609 strdup(values[8]); 1610 res->info.how.idmap_how_u.ad.value = 1611 strdup(values[9]); 1612 break; 1613 1614 case IDMAP_MAP_TYPE_DS_NLDAP: 1615 res->info.how.idmap_how_u.nldap.dn = 1616 strdup(values[7]); 1617 res->info.how.idmap_how_u.nldap.attr = 1618 strdup(values[8]); 1619 res->info.how.idmap_how_u.nldap.value = 1620 strdup(values[9]); 1621 break; 1622 1623 case IDMAP_MAP_TYPE_RULE_BASED: 1624 res->info.how.idmap_how_u.rule.windomain = 1625 strdup(values[10]); 1626 res->info.how.idmap_how_u.rule.winname = 1627 strdup(values[11]); 1628 res->info.how.idmap_how_u.rule.unixname = 1629 strdup(values[12]); 1630 res->info.how.idmap_how_u.rule.is_nt4 = 1631 strtoul(values[13], &end, 1); 1632 res->info.how.idmap_how_u.rule.is_user = 1633 is_user; 1634 res->info.how.idmap_how_u.rule.is_wuser = 1635 strtoul(values[5], &end, 1); 1636 break; 1637 1638 case IDMAP_MAP_TYPE_EPHEMERAL: 1639 break; 1640 1641 case IDMAP_MAP_TYPE_LOCAL_SID: 1642 break; 1643 1644 case IDMAP_MAP_TYPE_KNOWN_SID: 1645 break; 1646 1647 default: 1648 /* Unknow mapping type */ 1649 assert(FALSE); 1650 } 1651 } 1652 } 1653 if (vm != NULL) 1654 (void) sqlite_finalize(vm, NULL); 1655 return (retcode); 1656 } 1657 1658 static 1659 idmap_retcode 1660 lookup_cache_sid2name(sqlite *cache, const char *sidprefix, idmap_rid_t rid, 1661 char **name, char **domain, int *type) 1662 { 1663 char *end; 1664 char *sql = NULL; 1665 const char **values; 1666 sqlite_vm *vm = NULL; 1667 int ncol; 1668 time_t curtime; 1669 idmap_retcode retcode = IDMAP_SUCCESS; 1670 1671 /* Get current time */ 1672 errno = 0; 1673 if ((curtime = time(NULL)) == (time_t)-1) { 1674 idmapdlog(LOG_ERR, "Failed to get current time (%s)", 1675 strerror(errno)); 1676 retcode = IDMAP_ERR_INTERNAL; 1677 goto out; 1678 } 1679 1680 /* SQL to lookup the cache */ 1681 sql = sqlite_mprintf("SELECT canon_name, domain, type " 1682 "FROM name_cache WHERE " 1683 "sidprefix = %Q AND rid = %u AND " 1684 "(expiration = 0 OR expiration ISNULL OR " 1685 "expiration > %d);", 1686 sidprefix, rid, curtime); 1687 if (sql == NULL) { 1688 idmapdlog(LOG_ERR, "Out of memory"); 1689 retcode = IDMAP_ERR_MEMORY; 1690 goto out; 1691 } 1692 retcode = sql_compile_n_step_once(cache, sql, &vm, &ncol, 3, &values); 1693 sqlite_freemem(sql); 1694 1695 if (retcode == IDMAP_SUCCESS) { 1696 if (type != NULL) { 1697 if (values[2] == NULL) { 1698 retcode = IDMAP_ERR_CACHE; 1699 goto out; 1700 } 1701 *type = strtol(values[2], &end, 10); 1702 } 1703 1704 if (name != NULL && values[0] != NULL) { 1705 if ((*name = strdup(values[0])) == NULL) { 1706 idmapdlog(LOG_ERR, "Out of memory"); 1707 retcode = IDMAP_ERR_MEMORY; 1708 goto out; 1709 } 1710 } 1711 1712 if (domain != NULL && values[1] != NULL) { 1713 if ((*domain = strdup(values[1])) == NULL) { 1714 if (name != NULL && *name) { 1715 free(*name); 1716 *name = NULL; 1717 } 1718 idmapdlog(LOG_ERR, "Out of memory"); 1719 retcode = IDMAP_ERR_MEMORY; 1720 goto out; 1721 } 1722 } 1723 } 1724 1725 out: 1726 if (vm != NULL) 1727 (void) sqlite_finalize(vm, NULL); 1728 return (retcode); 1729 } 1730 1731 /* 1732 * Given SID, find winname using name_cache OR 1733 * Given winname, find SID using name_cache. 1734 * Used when mapping win to unix i.e. req->id1 is windows id and 1735 * req->id2 is unix id 1736 */ 1737 static 1738 idmap_retcode 1739 lookup_name_cache(sqlite *cache, idmap_mapping *req, idmap_id_res *res) 1740 { 1741 int type = -1; 1742 idmap_retcode retcode; 1743 char *sidprefix = NULL; 1744 idmap_rid_t rid; 1745 char *name = NULL, *domain = NULL; 1746 1747 /* Done if we've both sid and winname */ 1748 if (req->id1.idmap_id_u.sid.prefix != NULL && req->id1name != NULL) 1749 return (IDMAP_SUCCESS); 1750 1751 /* Lookup sid to winname */ 1752 if (req->id1.idmap_id_u.sid.prefix != NULL) { 1753 retcode = lookup_cache_sid2name(cache, 1754 req->id1.idmap_id_u.sid.prefix, 1755 req->id1.idmap_id_u.sid.rid, &name, &domain, &type); 1756 goto out; 1757 } 1758 1759 /* Lookup winame to sid */ 1760 retcode = lookup_cache_name2sid(cache, req->id1name, req->id1domain, 1761 &name, &sidprefix, &rid, &type); 1762 1763 out: 1764 if (retcode != IDMAP_SUCCESS) { 1765 free(name); 1766 free(domain); 1767 free(sidprefix); 1768 return (retcode); 1769 } 1770 1771 if (res->id.idtype == IDMAP_POSIXID) { 1772 res->id.idtype = (type == _IDMAP_T_USER) ? 1773 IDMAP_UID : IDMAP_GID; 1774 } 1775 req->id1.idtype = (type == _IDMAP_T_USER) ? 1776 IDMAP_USID : IDMAP_GSID; 1777 1778 req->direction |= _IDMAP_F_DONT_UPDATE_NAMECACHE; 1779 if (name != NULL) { 1780 free(req->id1name); /* Free existing winname */ 1781 req->id1name = name; /* and use canonical name instead */ 1782 } 1783 if (req->id1domain == NULL) 1784 req->id1domain = domain; 1785 if (req->id1.idmap_id_u.sid.prefix == NULL) { 1786 req->id1.idmap_id_u.sid.prefix = sidprefix; 1787 req->id1.idmap_id_u.sid.rid = rid; 1788 } 1789 return (retcode); 1790 } 1791 1792 1793 1794 static int 1795 ad_lookup_batch_int(lookup_state_t *state, idmap_mapping_batch *batch, 1796 idmap_ids_res *result, int index, int *num_processed) 1797 { 1798 idmap_retcode retcode; 1799 int i, num_queued, type, is_wuser, is_user; 1800 int next_request; 1801 int retries = 0, eunixtype; 1802 char **unixname; 1803 idmap_mapping *req; 1804 idmap_id_res *res; 1805 idmap_query_state_t *qs = NULL; 1806 idmap_how *how; 1807 char **dn, **attr, **value; 1808 1809 *num_processed = 0; 1810 1811 /* 1812 * Since req->id2.idtype is unused, we will use it here 1813 * to retrieve the value of sid_type. But it needs to be 1814 * reset to IDMAP_NONE before we return to prevent xdr 1815 * from mis-interpreting req->id2 when it tries to free 1816 * the input argument. Other option is to allocate an 1817 * array of integers and use it instead for the batched 1818 * call. But why un-necessarily allocate memory. That may 1819 * be an option if req->id2.idtype cannot be re-used in 1820 * future. 1821 */ 1822 retry: 1823 retcode = idmap_lookup_batch_start(_idmapdstate.ads[index], 1824 state->ad_nqueries, &qs); 1825 if (retcode != IDMAP_SUCCESS) { 1826 if (retcode == IDMAP_ERR_RETRIABLE_NET_ERR && 1827 retries++ < ADUTILS_DEF_NUM_RETRIES) 1828 goto retry; 1829 degrade_svc(1, "failed to create batch for AD lookup"); 1830 goto out; 1831 } 1832 num_queued = 0; 1833 1834 restore_svc(); 1835 1836 if (index == 0) { 1837 /* 1838 * Directory based name mapping is only performed within the 1839 * joined forest (index == 0). We don't trust other "trusted" 1840 * forests to provide DS-based name mapping information because 1841 * AD's definition of "cross-forest trust" does not encompass 1842 * this sort of behavior. 1843 */ 1844 idmap_lookup_batch_set_unixattr(qs, 1845 state->ad_unixuser_attr, state->ad_unixgroup_attr); 1846 } 1847 1848 for (i = 0; i < batch->idmap_mapping_batch_len; i++) { 1849 req = &batch->idmap_mapping_batch_val[i]; 1850 res = &result->ids.ids_val[i]; 1851 how = &res->info.how; 1852 1853 retcode = IDMAP_SUCCESS; 1854 req->id2.idtype = IDMAP_NONE; 1855 1856 /* Skip if not marked for this AD lookup */ 1857 if (!(req->direction & _IDMAP_F_LOOKUP_AD) || 1858 (req->direction & _IDMAP_F_LOOKUP_OTHER_AD)) 1859 continue; 1860 1861 if (res->retcode != IDMAP_ERR_RETRIABLE_NET_ERR) 1862 continue; 1863 1864 if (IS_REQUEST_SID(*req, 1)) { 1865 1866 /* win2unix request: */ 1867 1868 unixname = dn = attr = value = NULL; 1869 eunixtype = _IDMAP_T_UNDEF; 1870 if (req->id2name == NULL) { 1871 if (res->id.idtype == IDMAP_UID && 1872 AD_OR_MIXED(state->nm_siduid)) { 1873 eunixtype = _IDMAP_T_USER; 1874 unixname = &req->id2name; 1875 } else if (res->id.idtype == IDMAP_GID && 1876 AD_OR_MIXED(state->nm_sidgid)) { 1877 eunixtype = _IDMAP_T_GROUP; 1878 unixname = &req->id2name; 1879 } else if (AD_OR_MIXED(state->nm_siduid) || 1880 AD_OR_MIXED(state->nm_sidgid)) { 1881 unixname = &req->id2name; 1882 } 1883 } 1884 1885 if (unixname != NULL) { 1886 /* 1887 * Get how info for DS-based name 1888 * mapping only if AD or MIXED 1889 * mode is enabled. 1890 */ 1891 idmap_info_free(&res->info); 1892 res->info.src = IDMAP_MAP_SRC_NEW; 1893 how->map_type = IDMAP_MAP_TYPE_DS_AD; 1894 dn = &how->idmap_how_u.ad.dn; 1895 attr = &how->idmap_how_u.ad.attr; 1896 value = &how->idmap_how_u.ad.value; 1897 } 1898 if (req->id1.idmap_id_u.sid.prefix != NULL) { 1899 /* Lookup AD by SID */ 1900 retcode = idmap_sid2name_batch_add1( 1901 qs, req->id1.idmap_id_u.sid.prefix, 1902 &req->id1.idmap_id_u.sid.rid, eunixtype, 1903 dn, attr, value, 1904 (req->id1name == NULL) ? 1905 &req->id1name : NULL, 1906 (req->id1domain == NULL) ? 1907 &req->id1domain : NULL, 1908 (int *)&req->id2.idtype, unixname, 1909 &res->retcode); 1910 if (retcode == IDMAP_SUCCESS) 1911 num_queued++; 1912 } else { 1913 /* Lookup AD by winname */ 1914 assert(req->id1name != NULL); 1915 retcode = idmap_name2sid_batch_add1( 1916 qs, req->id1name, req->id1domain, 1917 eunixtype, 1918 dn, attr, value, 1919 &req->id1name, 1920 &req->id1.idmap_id_u.sid.prefix, 1921 &req->id1.idmap_id_u.sid.rid, 1922 (int *)&req->id2.idtype, unixname, 1923 &res->retcode); 1924 if (retcode == IDMAP_SUCCESS) 1925 num_queued++; 1926 } 1927 1928 } else if (IS_REQUEST_UID(*req) || IS_REQUEST_GID(*req)) { 1929 1930 /* unix2win request: */ 1931 1932 if (res->id.idmap_id_u.sid.prefix != NULL && 1933 req->id2name != NULL) { 1934 /* Already have SID and winname. done */ 1935 res->retcode = IDMAP_SUCCESS; 1936 continue; 1937 } 1938 1939 if (res->id.idmap_id_u.sid.prefix != NULL) { 1940 /* 1941 * SID but no winname -- lookup AD by 1942 * SID to get winname. 1943 * how info is not needed here because 1944 * we are not retrieving unixname from 1945 * AD. 1946 */ 1947 1948 retcode = idmap_sid2name_batch_add1( 1949 qs, res->id.idmap_id_u.sid.prefix, 1950 &res->id.idmap_id_u.sid.rid, 1951 _IDMAP_T_UNDEF, 1952 NULL, NULL, NULL, 1953 &req->id2name, 1954 &req->id2domain, (int *)&req->id2.idtype, 1955 NULL, &res->retcode); 1956 if (retcode == IDMAP_SUCCESS) 1957 num_queued++; 1958 } else if (req->id2name != NULL) { 1959 /* 1960 * winname but no SID -- lookup AD by 1961 * winname to get SID. 1962 * how info is not needed here because 1963 * we are not retrieving unixname from 1964 * AD. 1965 */ 1966 retcode = idmap_name2sid_batch_add1( 1967 qs, req->id2name, req->id2domain, 1968 _IDMAP_T_UNDEF, 1969 NULL, NULL, NULL, NULL, 1970 &res->id.idmap_id_u.sid.prefix, 1971 &res->id.idmap_id_u.sid.rid, 1972 (int *)&req->id2.idtype, NULL, 1973 &res->retcode); 1974 if (retcode == IDMAP_SUCCESS) 1975 num_queued++; 1976 } else if (req->id1name != NULL) { 1977 /* 1978 * No SID and no winname but we've unixname. 1979 * Lookup AD by unixname to get SID. 1980 */ 1981 is_user = (IS_REQUEST_UID(*req)) ? 1 : 0; 1982 if (res->id.idtype == IDMAP_USID) 1983 is_wuser = 1; 1984 else if (res->id.idtype == IDMAP_GSID) 1985 is_wuser = 0; 1986 else 1987 is_wuser = is_user; 1988 1989 idmap_info_free(&res->info); 1990 res->info.src = IDMAP_MAP_SRC_NEW; 1991 how->map_type = IDMAP_MAP_TYPE_DS_AD; 1992 retcode = idmap_unixname2sid_batch_add1( 1993 qs, req->id1name, is_user, is_wuser, 1994 &how->idmap_how_u.ad.dn, 1995 &how->idmap_how_u.ad.attr, 1996 &how->idmap_how_u.ad.value, 1997 &res->id.idmap_id_u.sid.prefix, 1998 &res->id.idmap_id_u.sid.rid, 1999 &req->id2name, &req->id2domain, 2000 (int *)&req->id2.idtype, &res->retcode); 2001 if (retcode == IDMAP_SUCCESS) 2002 num_queued++; 2003 } 2004 } 2005 2006 if (retcode == IDMAP_ERR_DOMAIN_NOTFOUND) { 2007 req->direction |= _IDMAP_F_LOOKUP_OTHER_AD; 2008 retcode = IDMAP_SUCCESS; 2009 } else if (retcode != IDMAP_SUCCESS) { 2010 idmap_lookup_release_batch(&qs); 2011 num_queued = 0; 2012 next_request = i + 1; 2013 break; 2014 } 2015 } /* End of for loop */ 2016 2017 if (retcode == IDMAP_SUCCESS) { 2018 /* add keeps track if we added an entry to the batch */ 2019 if (num_queued > 0) 2020 retcode = idmap_lookup_batch_end(&qs); 2021 else 2022 idmap_lookup_release_batch(&qs); 2023 } 2024 2025 if (retcode == IDMAP_ERR_RETRIABLE_NET_ERR && 2026 retries++ < ADUTILS_DEF_NUM_RETRIES) 2027 goto retry; 2028 else if (retcode == IDMAP_ERR_RETRIABLE_NET_ERR) 2029 degrade_svc(1, "some AD lookups timed out repeatedly"); 2030 2031 if (retcode != IDMAP_SUCCESS) { 2032 /* Mark any unproccessed requests for an other AD */ 2033 for (i = next_request; i < batch->idmap_mapping_batch_len; 2034 i++) { 2035 req = &batch->idmap_mapping_batch_val[i]; 2036 req->direction |= _IDMAP_F_LOOKUP_OTHER_AD; 2037 2038 } 2039 } 2040 2041 if (retcode != IDMAP_SUCCESS) 2042 idmapdlog(LOG_NOTICE, "Failed to batch AD lookup requests"); 2043 2044 out: 2045 /* 2046 * This loop does the following: 2047 * 1. Reset _IDMAP_F_LOOKUP_AD flag from the request. 2048 * 2. Reset req->id2.idtype to IDMAP_NONE 2049 * 3. If batch_start or batch_add failed then set the status 2050 * of each request marked for AD lookup to that error. 2051 * 4. Evaluate the type of the AD object (i.e. user or group) 2052 * and update the idtype in request. 2053 */ 2054 for (i = 0; i < batch->idmap_mapping_batch_len; i++) { 2055 req = &batch->idmap_mapping_batch_val[i]; 2056 type = req->id2.idtype; 2057 req->id2.idtype = IDMAP_NONE; 2058 res = &result->ids.ids_val[i]; 2059 how = &res->info.how; 2060 if (!(req->direction & _IDMAP_F_LOOKUP_AD) || 2061 (req->direction & _IDMAP_F_LOOKUP_OTHER_AD)) 2062 continue; 2063 2064 /* Count number processed */ 2065 (*num_processed)++; 2066 2067 /* Reset AD lookup flag */ 2068 req->direction &= ~(_IDMAP_F_LOOKUP_AD); 2069 2070 /* 2071 * If batch_start or batch_add failed then set the 2072 * status of each request marked for AD lookup to 2073 * that error. 2074 */ 2075 if (retcode != IDMAP_SUCCESS) { 2076 res->retcode = retcode; 2077 continue; 2078 } 2079 2080 if (res->retcode == IDMAP_ERR_NOTFOUND) { 2081 /* Nothing found - remove the preset info */ 2082 idmap_info_free(&res->info); 2083 } 2084 2085 if (IS_REQUEST_SID(*req, 1)) { 2086 if (res->retcode != IDMAP_SUCCESS) 2087 continue; 2088 /* Evaluate result type */ 2089 switch (type) { 2090 case _IDMAP_T_USER: 2091 if (res->id.idtype == IDMAP_POSIXID) 2092 res->id.idtype = IDMAP_UID; 2093 req->id1.idtype = IDMAP_USID; 2094 break; 2095 2096 case _IDMAP_T_GROUP: 2097 if (res->id.idtype == IDMAP_POSIXID) 2098 res->id.idtype = IDMAP_GID; 2099 req->id1.idtype = IDMAP_GSID; 2100 break; 2101 2102 default: 2103 res->retcode = IDMAP_ERR_SID; 2104 break; 2105 } 2106 if (res->retcode == IDMAP_SUCCESS && 2107 req->id1name != NULL && 2108 (req->id2name == NULL || 2109 res->id.idmap_id_u.uid == SENTINEL_PID) && 2110 NLDAP_MODE(res->id.idtype, state)) { 2111 req->direction |= _IDMAP_F_LOOKUP_NLDAP; 2112 state->nldap_nqueries++; 2113 } 2114 } else if (IS_REQUEST_UID(*req) || IS_REQUEST_GID(*req)) { 2115 if (res->retcode != IDMAP_SUCCESS) { 2116 if ((!(IDMAP_FATAL_ERROR(res->retcode))) && 2117 res->id.idmap_id_u.sid.prefix == NULL && 2118 req->id2name == NULL && /* no winname */ 2119 req->id1name != NULL) /* unixname */ 2120 /* 2121 * If AD lookup by unixname 2122 * failed with non fatal error 2123 * then clear the error (ie set 2124 * res->retcode to success). 2125 * This allows the next pass to 2126 * process other mapping 2127 * mechanisms for this request. 2128 */ 2129 res->retcode = IDMAP_SUCCESS; 2130 continue; 2131 } 2132 /* Evaluate result type */ 2133 switch (type) { 2134 case _IDMAP_T_USER: 2135 if (res->id.idtype == IDMAP_SID) 2136 res->id.idtype = IDMAP_USID; 2137 break; 2138 2139 case _IDMAP_T_GROUP: 2140 if (res->id.idtype == IDMAP_SID) 2141 res->id.idtype = IDMAP_GSID; 2142 break; 2143 2144 default: 2145 res->retcode = IDMAP_ERR_SID; 2146 break; 2147 } 2148 } 2149 } 2150 2151 return (retcode); 2152 } 2153 2154 2155 2156 /* 2157 * Batch AD lookups 2158 */ 2159 idmap_retcode 2160 ad_lookup_batch(lookup_state_t *state, idmap_mapping_batch *batch, 2161 idmap_ids_res *result) 2162 { 2163 idmap_retcode retcode; 2164 int i, j; 2165 idmap_mapping *req; 2166 idmap_id_res *res; 2167 int num_queries; 2168 int num_processed; 2169 2170 if (state->ad_nqueries == 0) 2171 return (IDMAP_SUCCESS); 2172 2173 for (i = 0; i < batch->idmap_mapping_batch_len; i++) { 2174 req = &batch->idmap_mapping_batch_val[i]; 2175 res = &result->ids.ids_val[i]; 2176 2177 /* Skip if not marked for AD lookup or already in error. */ 2178 if (!(req->direction & _IDMAP_F_LOOKUP_AD) || 2179 res->retcode != IDMAP_SUCCESS) 2180 continue; 2181 2182 /* Init status */ 2183 res->retcode = IDMAP_ERR_RETRIABLE_NET_ERR; 2184 } 2185 2186 RDLOCK_CONFIG(); 2187 num_queries = state->ad_nqueries; 2188 if (_idmapdstate.num_ads > 0) { 2189 for (i = 0; i < _idmapdstate.num_ads && num_queries > 0; i++) { 2190 2191 retcode = ad_lookup_batch_int(state, batch, result, i, 2192 &num_processed); 2193 num_queries -= num_processed; 2194 2195 if (num_queries > 0) { 2196 for (j = 0; j < batch->idmap_mapping_batch_len; 2197 j++) { 2198 req = 2199 &batch->idmap_mapping_batch_val[j]; 2200 res = &result->ids.ids_val[j]; 2201 if (!(req->direction & 2202 _IDMAP_F_LOOKUP_AD)) 2203 continue; 2204 /* 2205 * Reset the other AD lookup flag so 2206 * that we can try the next AD 2207 */ 2208 req->direction &= 2209 ~(_IDMAP_F_LOOKUP_OTHER_AD); 2210 2211 if ((i + 1) >= _idmapdstate.num_ads) { 2212 /* 2213 * There are no more ADs to try 2214 */ 2215 req->direction &= 2216 ~(_IDMAP_F_LOOKUP_AD); 2217 res->retcode = 2218 IDMAP_ERR_DOMAIN_NOTFOUND; 2219 } 2220 } 2221 } 2222 } 2223 } else { 2224 /* Case of no ADs */ 2225 retcode = IDMAP_ERR_NO_ACTIVEDIRECTORY; 2226 for (i = 0; i < batch->idmap_mapping_batch_len; i++) { 2227 req = &batch->idmap_mapping_batch_val[i]; 2228 res = &result->ids.ids_val[i]; 2229 if (!(req->direction & _IDMAP_F_LOOKUP_AD)) 2230 continue; 2231 req->direction &= ~(_IDMAP_F_LOOKUP_AD); 2232 res->retcode = IDMAP_ERR_NO_ACTIVEDIRECTORY; 2233 } 2234 } 2235 UNLOCK_CONFIG(); 2236 2237 /* AD lookups done. Reset state->ad_nqueries and return */ 2238 state->ad_nqueries = 0; 2239 return (retcode); 2240 } 2241 2242 /* 2243 * Convention when processing win2unix requests: 2244 * 2245 * Windows identity: 2246 * req->id1name = 2247 * winname if given otherwise winname found will be placed 2248 * here. 2249 * req->id1domain = 2250 * windomain if given otherwise windomain found will be 2251 * placed here. 2252 * req->id1.idtype = 2253 * Either IDMAP_SID/USID/GSID. If this is IDMAP_SID then it'll 2254 * be set to IDMAP_USID/GSID depending upon whether the 2255 * given SID is user or group respectively. The user/group-ness 2256 * is determined either when looking up well-known SIDs table OR 2257 * if the SID is found in namecache OR by ad_lookup_one() OR by 2258 * ad_lookup_batch(). 2259 * req->id1..sid.[prefix, rid] = 2260 * SID if given otherwise SID found will be placed here. 2261 * 2262 * Unix identity: 2263 * req->id2name = 2264 * unixname found will be placed here. 2265 * req->id2domain = 2266 * NOT USED 2267 * res->id.idtype = 2268 * Target type initialized from req->id2.idtype. If 2269 * it is IDMAP_POSIXID then actual type (IDMAP_UID/GID) found 2270 * will be placed here. 2271 * res->id..[uid or gid] = 2272 * UID/GID found will be placed here. 2273 * 2274 * Others: 2275 * res->retcode = 2276 * Return status for this request will be placed here. 2277 * res->direction = 2278 * Direction found will be placed here. Direction 2279 * meaning whether the resultant mapping is valid 2280 * only from win2unix or bi-directional. 2281 * req->direction = 2282 * INTERNAL USE. Used by idmapd to set various 2283 * flags (_IDMAP_F_xxxx) to aid in processing 2284 * of the request. 2285 * req->id2.idtype = 2286 * INTERNAL USE. Initially this is the requested target 2287 * type and is used to initialize res->id.idtype. 2288 * ad_lookup_batch() uses this field temporarily to store 2289 * sid_type obtained by the batched AD lookups and after 2290 * use resets it to IDMAP_NONE to prevent xdr from 2291 * mis-interpreting the contents of req->id2. 2292 * req->id2..[uid or gid or sid] = 2293 * NOT USED 2294 */ 2295 2296 /* 2297 * This function does the following: 2298 * 1. Lookup well-known SIDs table. 2299 * 2. Check if the given SID is a local-SID and if so extract UID/GID from it. 2300 * 3. Lookup cache. 2301 * 4. Check if the client does not want new mapping to be allocated 2302 * in which case this pass is the final pass. 2303 * 5. Set AD lookup flag if it determines that the next stage needs 2304 * to do AD lookup. 2305 */ 2306 idmap_retcode 2307 sid2pid_first_pass(lookup_state_t *state, idmap_mapping *req, 2308 idmap_id_res *res) 2309 { 2310 idmap_retcode retcode; 2311 int wksid; 2312 2313 /* Initialize result */ 2314 res->id.idtype = req->id2.idtype; 2315 res->id.idmap_id_u.uid = SENTINEL_PID; 2316 res->direction = IDMAP_DIRECTION_UNDEF; 2317 wksid = 0; 2318 2319 if (EMPTY_STRING(req->id1.idmap_id_u.sid.prefix)) { 2320 if (req->id1name == NULL) { 2321 retcode = IDMAP_ERR_ARG; 2322 goto out; 2323 } 2324 /* sanitize sidprefix */ 2325 free(req->id1.idmap_id_u.sid.prefix); 2326 req->id1.idmap_id_u.sid.prefix = NULL; 2327 } 2328 2329 /* Lookup well-known SIDs table */ 2330 retcode = lookup_wksids_sid2pid(req, res, &wksid); 2331 if (retcode != IDMAP_ERR_NOTFOUND) 2332 goto out; 2333 2334 if (!wksid) { 2335 /* Check if this is a localsid */ 2336 retcode = lookup_localsid2pid(req, res); 2337 if (retcode != IDMAP_ERR_NOTFOUND) 2338 goto out; 2339 2340 if (ALLOW_WK_OR_LOCAL_SIDS_ONLY(req)) { 2341 retcode = IDMAP_ERR_NONE_GENERATED; 2342 goto out; 2343 } 2344 } 2345 2346 /* Lookup cache */ 2347 retcode = lookup_cache_sid2pid(state->cache, req, res); 2348 if (retcode != IDMAP_ERR_NOTFOUND) 2349 goto out; 2350 2351 if (DO_NOT_ALLOC_NEW_ID_MAPPING(req) || AVOID_NAMESERVICE(req)) { 2352 retcode = IDMAP_ERR_NONE_GENERATED; 2353 goto out; 2354 } 2355 2356 /* 2357 * Failed to find non-expired entry in cache. Next step is 2358 * to determine if this request needs to be batched for AD lookup. 2359 * 2360 * At this point we have either sid or winname or both. If we don't 2361 * have both then lookup name_cache for the sid or winname 2362 * whichever is missing. If not found then this request will be 2363 * batched for AD lookup. 2364 */ 2365 retcode = lookup_name_cache(state->cache, req, res); 2366 if (retcode != IDMAP_SUCCESS && retcode != IDMAP_ERR_NOTFOUND) 2367 goto out; 2368 2369 /* 2370 * Set the flag to indicate that we are not done yet so that 2371 * subsequent passes considers this request for name-based 2372 * mapping and ephemeral mapping. 2373 */ 2374 state->sid2pid_done = FALSE; 2375 req->direction |= _IDMAP_F_NOTDONE; 2376 2377 /* 2378 * Even if we have both sid and winname, we still may need to batch 2379 * this request for AD lookup if we don't have unixname and 2380 * directory-based name mapping (AD or mixed) is enabled. 2381 * We avoid AD lookup for well-known SIDs because they don't have 2382 * regular AD objects. 2383 */ 2384 if (retcode != IDMAP_SUCCESS || 2385 (!wksid && req->id2name == NULL && 2386 AD_OR_MIXED_MODE(res->id.idtype, state))) { 2387 retcode = IDMAP_SUCCESS; 2388 req->direction |= _IDMAP_F_LOOKUP_AD; 2389 state->ad_nqueries++; 2390 } else if (NLDAP_MODE(res->id.idtype, state)) { 2391 req->direction |= _IDMAP_F_LOOKUP_NLDAP; 2392 state->nldap_nqueries++; 2393 } 2394 2395 2396 out: 2397 res->retcode = idmap_stat4prot(retcode); 2398 /* 2399 * If we are done and there was an error then set fallback pid 2400 * in the result. 2401 */ 2402 if (ARE_WE_DONE(req->direction) && res->retcode != IDMAP_SUCCESS) 2403 res->id.idmap_id_u.uid = UID_NOBODY; 2404 return (retcode); 2405 } 2406 2407 /* 2408 * Generate SID using the following convention 2409 * <machine-sid-prefix>-<1000 + uid> 2410 * <machine-sid-prefix>-<2^31 + gid> 2411 */ 2412 static 2413 idmap_retcode 2414 generate_localsid(idmap_mapping *req, idmap_id_res *res, int is_user, 2415 int fallback) 2416 { 2417 free(res->id.idmap_id_u.sid.prefix); 2418 res->id.idmap_id_u.sid.prefix = NULL; 2419 2420 /* 2421 * Diagonal mapping for localSIDs not supported because of the 2422 * way we generate localSIDs. 2423 */ 2424 if (is_user && res->id.idtype == IDMAP_GSID) 2425 return (IDMAP_ERR_NOMAPPING); 2426 if (!is_user && res->id.idtype == IDMAP_USID) 2427 return (IDMAP_ERR_NOMAPPING); 2428 2429 /* Skip 1000 UIDs */ 2430 if (is_user && req->id1.idmap_id_u.uid > 2431 (INT32_MAX - LOCALRID_MIN)) 2432 return (IDMAP_ERR_NOMAPPING); 2433 2434 RDLOCK_CONFIG(); 2435 /* 2436 * machine_sid is never NULL because if it is we won't be here. 2437 * No need to assert because stdrup(NULL) will core anyways. 2438 */ 2439 res->id.idmap_id_u.sid.prefix = 2440 strdup(_idmapdstate.cfg->pgcfg.machine_sid); 2441 if (res->id.idmap_id_u.sid.prefix == NULL) { 2442 UNLOCK_CONFIG(); 2443 idmapdlog(LOG_ERR, "Out of memory"); 2444 return (IDMAP_ERR_MEMORY); 2445 } 2446 UNLOCK_CONFIG(); 2447 res->id.idmap_id_u.sid.rid = 2448 (is_user) ? req->id1.idmap_id_u.uid + LOCALRID_MIN : 2449 req->id1.idmap_id_u.gid + INT32_MAX + 1; 2450 res->direction = IDMAP_DIRECTION_BI; 2451 if (res->id.idtype == IDMAP_SID) 2452 res->id.idtype = is_user ? IDMAP_USID : IDMAP_GSID; 2453 2454 if (!fallback) { 2455 res->info.how.map_type = IDMAP_MAP_TYPE_LOCAL_SID; 2456 res->info.src = IDMAP_MAP_SRC_ALGORITHMIC; 2457 } 2458 2459 /* 2460 * Don't update name_cache because local sids don't have 2461 * valid windows names. 2462 */ 2463 req->direction |= _IDMAP_F_DONT_UPDATE_NAMECACHE; 2464 return (IDMAP_SUCCESS); 2465 } 2466 2467 static 2468 idmap_retcode 2469 lookup_localsid2pid(idmap_mapping *req, idmap_id_res *res) 2470 { 2471 char *sidprefix; 2472 uint32_t rid; 2473 int s; 2474 2475 /* 2476 * If the sidprefix == localsid then UID = last RID - 1000 or 2477 * GID = last RID - 2^31. 2478 */ 2479 if ((sidprefix = req->id1.idmap_id_u.sid.prefix) == NULL) 2480 /* This means we are looking up by winname */ 2481 return (IDMAP_ERR_NOTFOUND); 2482 rid = req->id1.idmap_id_u.sid.rid; 2483 2484 RDLOCK_CONFIG(); 2485 s = (_idmapdstate.cfg->pgcfg.machine_sid) ? 2486 strcasecmp(sidprefix, _idmapdstate.cfg->pgcfg.machine_sid) : 1; 2487 UNLOCK_CONFIG(); 2488 2489 /* 2490 * If the given sidprefix does not match machine_sid then this is 2491 * not a local SID. 2492 */ 2493 if (s != 0) 2494 return (IDMAP_ERR_NOTFOUND); 2495 2496 switch (res->id.idtype) { 2497 case IDMAP_UID: 2498 if (rid > INT32_MAX || rid < LOCALRID_MIN) 2499 return (IDMAP_ERR_ARG); 2500 res->id.idmap_id_u.uid = rid - LOCALRID_MIN; 2501 break; 2502 case IDMAP_GID: 2503 if (rid <= INT32_MAX) 2504 return (IDMAP_ERR_ARG); 2505 res->id.idmap_id_u.gid = rid - INT32_MAX - 1; 2506 break; 2507 case IDMAP_POSIXID: 2508 if (rid > INT32_MAX) { 2509 res->id.idmap_id_u.gid = rid - INT32_MAX - 1; 2510 res->id.idtype = IDMAP_GID; 2511 } else if (rid < LOCALRID_MIN) { 2512 return (IDMAP_ERR_ARG); 2513 } else { 2514 res->id.idmap_id_u.uid = rid - LOCALRID_MIN; 2515 res->id.idtype = IDMAP_UID; 2516 } 2517 break; 2518 default: 2519 return (IDMAP_ERR_NOTSUPPORTED); 2520 } 2521 res->info.how.map_type = IDMAP_MAP_TYPE_LOCAL_SID; 2522 res->info.src = IDMAP_MAP_SRC_ALGORITHMIC; 2523 return (IDMAP_SUCCESS); 2524 } 2525 2526 /* 2527 * Name service lookup by unixname to get pid 2528 */ 2529 static 2530 idmap_retcode 2531 ns_lookup_byname(const char *name, const char *lower_name, idmap_id *id) 2532 { 2533 struct passwd pwd, *pwdp; 2534 struct group grp, *grpp; 2535 char buf[1024]; 2536 int errnum; 2537 const char *me = "ns_lookup_byname"; 2538 2539 switch (id->idtype) { 2540 case IDMAP_UID: 2541 pwdp = getpwnam_r(name, &pwd, buf, sizeof (buf)); 2542 if (pwdp == NULL && errno == 0 && lower_name != NULL && 2543 name != lower_name && strcmp(name, lower_name) != 0) 2544 pwdp = getpwnam_r(lower_name, &pwd, buf, sizeof (buf)); 2545 if (pwdp == NULL) { 2546 errnum = errno; 2547 idmapdlog(LOG_WARNING, 2548 "%s: getpwnam_r(%s) failed (%s).", 2549 me, name, errnum ? strerror(errnum) : "not found"); 2550 if (errnum == 0) 2551 return (IDMAP_ERR_NOTFOUND); 2552 else 2553 return (IDMAP_ERR_INTERNAL); 2554 } 2555 id->idmap_id_u.uid = pwd.pw_uid; 2556 break; 2557 case IDMAP_GID: 2558 grpp = getgrnam_r(name, &grp, buf, sizeof (buf)); 2559 if (grpp == NULL && errno == 0 && lower_name != NULL && 2560 name != lower_name && strcmp(name, lower_name) != 0) 2561 grpp = getgrnam_r(lower_name, &grp, buf, sizeof (buf)); 2562 if (grpp == NULL) { 2563 errnum = errno; 2564 idmapdlog(LOG_WARNING, 2565 "%s: getgrnam_r(%s) failed (%s).", 2566 me, name, errnum ? strerror(errnum) : "not found"); 2567 if (errnum == 0) 2568 return (IDMAP_ERR_NOTFOUND); 2569 else 2570 return (IDMAP_ERR_INTERNAL); 2571 } 2572 id->idmap_id_u.gid = grp.gr_gid; 2573 break; 2574 default: 2575 return (IDMAP_ERR_ARG); 2576 } 2577 return (IDMAP_SUCCESS); 2578 } 2579 2580 2581 /* 2582 * Name service lookup by pid to get unixname 2583 */ 2584 static 2585 idmap_retcode 2586 ns_lookup_bypid(uid_t pid, int is_user, char **unixname) 2587 { 2588 struct passwd pwd; 2589 struct group grp; 2590 char buf[1024]; 2591 int errnum; 2592 const char *me = "ns_lookup_bypid"; 2593 2594 if (is_user) { 2595 errno = 0; 2596 if (getpwuid_r(pid, &pwd, buf, sizeof (buf)) == NULL) { 2597 errnum = errno; 2598 idmapdlog(LOG_WARNING, 2599 "%s: getpwuid_r(%u) failed (%s).", 2600 me, pid, errnum ? strerror(errnum) : "not found"); 2601 if (errnum == 0) 2602 return (IDMAP_ERR_NOTFOUND); 2603 else 2604 return (IDMAP_ERR_INTERNAL); 2605 } 2606 *unixname = strdup(pwd.pw_name); 2607 } else { 2608 errno = 0; 2609 if (getgrgid_r(pid, &grp, buf, sizeof (buf)) == NULL) { 2610 errnum = errno; 2611 idmapdlog(LOG_WARNING, 2612 "%s: getgrgid_r(%u) failed (%s).", 2613 me, pid, errnum ? strerror(errnum) : "not found"); 2614 if (errnum == 0) 2615 return (IDMAP_ERR_NOTFOUND); 2616 else 2617 return (IDMAP_ERR_INTERNAL); 2618 } 2619 *unixname = strdup(grp.gr_name); 2620 } 2621 if (*unixname == NULL) 2622 return (IDMAP_ERR_MEMORY); 2623 return (IDMAP_SUCCESS); 2624 } 2625 2626 /* 2627 * Name-based mapping 2628 * 2629 * Case 1: If no rule matches do ephemeral 2630 * 2631 * Case 2: If rule matches and unixname is "" then return no mapping. 2632 * 2633 * Case 3: If rule matches and unixname is specified then lookup name 2634 * service using the unixname. If unixname not found then return no mapping. 2635 * 2636 * Case 4: If rule matches and unixname is * then lookup name service 2637 * using winname as the unixname. If unixname not found then process 2638 * other rules using the lookup order. If no other rule matches then do 2639 * ephemeral. Otherwise, based on the matched rule do Case 2 or 3 or 4. 2640 * This allows us to specify a fallback unixname per _domain_ or no mapping 2641 * instead of the default behaviour of doing ephemeral mapping. 2642 * 2643 * Example 1: 2644 * *@sfbay == * 2645 * If looking up windows users foo@sfbay and foo does not exists in 2646 * the name service then foo@sfbay will be mapped to an ephemeral id. 2647 * 2648 * Example 2: 2649 * *@sfbay == * 2650 * *@sfbay => guest 2651 * If looking up windows users foo@sfbay and foo does not exists in 2652 * the name service then foo@sfbay will be mapped to guest. 2653 * 2654 * Example 3: 2655 * *@sfbay == * 2656 * *@sfbay => "" 2657 * If looking up windows users foo@sfbay and foo does not exists in 2658 * the name service then we will return no mapping for foo@sfbay. 2659 * 2660 */ 2661 static 2662 idmap_retcode 2663 name_based_mapping_sid2pid(lookup_state_t *state, 2664 idmap_mapping *req, idmap_id_res *res) 2665 { 2666 const char *unixname, *windomain; 2667 char *sql = NULL, *errmsg = NULL, *lower_winname = NULL; 2668 idmap_retcode retcode; 2669 char *end, *lower_unixname, *winname; 2670 const char **values; 2671 sqlite_vm *vm = NULL; 2672 int ncol, r, i, is_user, is_wuser; 2673 idmap_namerule *rule = &res->info.how.idmap_how_u.rule; 2674 int direction; 2675 const char *me = "name_based_mapping_sid2pid"; 2676 2677 assert(req->id1name != NULL); /* We have winname */ 2678 assert(req->id2name == NULL); /* We don't have unixname */ 2679 2680 winname = req->id1name; 2681 windomain = req->id1domain; 2682 2683 switch (req->id1.idtype) { 2684 case IDMAP_USID: 2685 is_wuser = 1; 2686 break; 2687 case IDMAP_GSID: 2688 is_wuser = 0; 2689 break; 2690 default: 2691 idmapdlog(LOG_ERR, "%s: Unable to determine if the " 2692 "given Windows id is user or group.", me); 2693 return (IDMAP_ERR_INTERNAL); 2694 } 2695 2696 switch (res->id.idtype) { 2697 case IDMAP_UID: 2698 is_user = 1; 2699 break; 2700 case IDMAP_GID: 2701 is_user = 0; 2702 break; 2703 case IDMAP_POSIXID: 2704 is_user = is_wuser; 2705 res->id.idtype = is_user ? IDMAP_UID : IDMAP_GID; 2706 break; 2707 } 2708 2709 i = 0; 2710 if (windomain == NULL) 2711 windomain = ""; 2712 else if (state->defdom != NULL && 2713 strcasecmp(state->defdom, windomain) == 0) 2714 i = 1; 2715 2716 if ((lower_winname = tolower_u8(winname)) == NULL) 2717 lower_winname = winname; /* hope for the best */ 2718 sql = sqlite_mprintf( 2719 "SELECT unixname, u2w_order, winname_display, windomain, is_nt4 " 2720 "FROM namerules WHERE " 2721 "w2u_order > 0 AND is_user = %d AND is_wuser = %d AND " 2722 "(winname = %Q OR winname = '*') AND " 2723 "(windomain = %Q OR windomain = '*' %s) " 2724 "ORDER BY w2u_order ASC;", 2725 is_user, is_wuser, lower_winname, windomain, 2726 i ? "OR windomain ISNULL OR windomain = ''" : ""); 2727 if (sql == NULL) { 2728 idmapdlog(LOG_ERR, "Out of memory"); 2729 retcode = IDMAP_ERR_MEMORY; 2730 goto out; 2731 } 2732 2733 if (sqlite_compile(state->db, sql, NULL, &vm, &errmsg) != SQLITE_OK) { 2734 retcode = IDMAP_ERR_INTERNAL; 2735 idmapdlog(LOG_ERR, "%s: database error (%s)", me, 2736 CHECK_NULL(errmsg)); 2737 sqlite_freemem(errmsg); 2738 goto out; 2739 } 2740 2741 for (;;) { 2742 r = sqlite_step(vm, &ncol, &values, NULL); 2743 assert(r != SQLITE_LOCKED && r != SQLITE_BUSY); 2744 2745 if (r == SQLITE_ROW) { 2746 if (ncol < 5) { 2747 retcode = IDMAP_ERR_INTERNAL; 2748 goto out; 2749 } 2750 if (values[0] == NULL) { 2751 retcode = IDMAP_ERR_INTERNAL; 2752 goto out; 2753 } 2754 2755 if (values[1] != NULL) 2756 direction = 2757 (strtol(values[1], &end, 10) == 0)? 2758 IDMAP_DIRECTION_W2U:IDMAP_DIRECTION_BI; 2759 else 2760 direction = IDMAP_DIRECTION_W2U; 2761 2762 if (EMPTY_NAME(values[0])) { 2763 idmap_namerule_set(rule, values[3], values[2], 2764 values[0], is_wuser, is_user, 2765 strtol(values[4], &end, 10), 2766 direction); 2767 retcode = IDMAP_ERR_NOMAPPING; 2768 goto out; 2769 } 2770 2771 if (values[0][0] == '*') { 2772 unixname = winname; 2773 lower_unixname = lower_winname; 2774 } else { 2775 unixname = values[0]; 2776 lower_unixname = NULL; 2777 } 2778 2779 retcode = ns_lookup_byname(unixname, lower_unixname, 2780 &res->id); 2781 if (retcode == IDMAP_ERR_NOTFOUND) { 2782 if (values[0][0] == '*') 2783 /* Case 4 */ 2784 continue; 2785 else { 2786 /* Case 3 */ 2787 idmap_namerule_set(rule, values[3], 2788 values[2], values[0], is_wuser, 2789 is_user, 2790 strtol(values[4], &end, 10), 2791 direction); 2792 retcode = IDMAP_ERR_NOMAPPING; 2793 } 2794 } 2795 goto out; 2796 } else if (r == SQLITE_DONE) { 2797 retcode = IDMAP_ERR_NOTFOUND; 2798 goto out; 2799 } else { 2800 (void) sqlite_finalize(vm, &errmsg); 2801 vm = NULL; 2802 idmapdlog(LOG_ERR, "%s: database error (%s)", me, 2803 CHECK_NULL(errmsg)); 2804 sqlite_freemem(errmsg); 2805 retcode = IDMAP_ERR_INTERNAL; 2806 goto out; 2807 } 2808 } 2809 2810 out: 2811 if (sql != NULL) 2812 sqlite_freemem(sql); 2813 if (retcode == IDMAP_SUCCESS) { 2814 if (values[1] != NULL) 2815 res->direction = 2816 (strtol(values[1], &end, 10) == 0)? 2817 IDMAP_DIRECTION_W2U:IDMAP_DIRECTION_BI; 2818 else 2819 res->direction = IDMAP_DIRECTION_W2U; 2820 2821 req->id2name = strdup(unixname); 2822 if (req->id2name == NULL) { 2823 retcode = IDMAP_ERR_MEMORY; 2824 } 2825 } 2826 2827 if (retcode == IDMAP_SUCCESS) { 2828 idmap_namerule_set(rule, values[3], values[2], 2829 values[0], is_wuser, is_user, strtol(values[4], &end, 10), 2830 res->direction); 2831 } 2832 2833 if (retcode != IDMAP_ERR_NOTFOUND) { 2834 res->info.how.map_type = IDMAP_MAP_TYPE_RULE_BASED; 2835 res->info.src = IDMAP_MAP_SRC_NEW; 2836 } 2837 2838 if (lower_winname != NULL && lower_winname != winname) 2839 free(lower_winname); 2840 if (vm != NULL) 2841 (void) sqlite_finalize(vm, NULL); 2842 return (retcode); 2843 } 2844 2845 static 2846 int 2847 get_next_eph_uid(uid_t *next_uid) 2848 { 2849 uid_t uid; 2850 gid_t gid; 2851 int err; 2852 2853 *next_uid = (uid_t)-1; 2854 uid = _idmapdstate.next_uid++; 2855 if (uid >= _idmapdstate.limit_uid) { 2856 if ((err = allocids(0, 8192, &uid, 0, &gid)) != 0) 2857 return (err); 2858 2859 _idmapdstate.limit_uid = uid + 8192; 2860 _idmapdstate.next_uid = uid; 2861 } 2862 *next_uid = uid; 2863 2864 return (0); 2865 } 2866 2867 static 2868 int 2869 get_next_eph_gid(gid_t *next_gid) 2870 { 2871 uid_t uid; 2872 gid_t gid; 2873 int err; 2874 2875 *next_gid = (uid_t)-1; 2876 gid = _idmapdstate.next_gid++; 2877 if (gid >= _idmapdstate.limit_gid) { 2878 if ((err = allocids(0, 0, &uid, 8192, &gid)) != 0) 2879 return (err); 2880 2881 _idmapdstate.limit_gid = gid + 8192; 2882 _idmapdstate.next_gid = gid; 2883 } 2884 *next_gid = gid; 2885 2886 return (0); 2887 } 2888 2889 static 2890 int 2891 gethash(const char *str, uint32_t num, uint_t htsize) 2892 { 2893 uint_t hval, i, len; 2894 2895 if (str == NULL) 2896 return (0); 2897 for (len = strlen(str), hval = 0, i = 0; i < len; i++) { 2898 hval += str[i]; 2899 hval += (hval << 10); 2900 hval ^= (hval >> 6); 2901 } 2902 for (str = (const char *)&num, i = 0; i < sizeof (num); i++) { 2903 hval += str[i]; 2904 hval += (hval << 10); 2905 hval ^= (hval >> 6); 2906 } 2907 hval += (hval << 3); 2908 hval ^= (hval >> 11); 2909 hval += (hval << 15); 2910 return (hval % htsize); 2911 } 2912 2913 static 2914 int 2915 get_from_sid_history(lookup_state_t *state, const char *prefix, uint32_t rid, 2916 uid_t *pid) 2917 { 2918 uint_t next, key; 2919 uint_t htsize = state->sid_history_size; 2920 idmap_sid *sid; 2921 2922 next = gethash(prefix, rid, htsize); 2923 while (next != htsize) { 2924 key = state->sid_history[next].key; 2925 if (key == htsize) 2926 return (0); 2927 sid = &state->batch->idmap_mapping_batch_val[key].id1. 2928 idmap_id_u.sid; 2929 if (sid->rid == rid && strcmp(sid->prefix, prefix) == 0) { 2930 *pid = state->result->ids.ids_val[key].id. 2931 idmap_id_u.uid; 2932 return (1); 2933 } 2934 next = state->sid_history[next].next; 2935 } 2936 return (0); 2937 } 2938 2939 static 2940 void 2941 add_to_sid_history(lookup_state_t *state, const char *prefix, uint32_t rid) 2942 { 2943 uint_t hash, next; 2944 uint_t htsize = state->sid_history_size; 2945 2946 hash = next = gethash(prefix, rid, htsize); 2947 while (state->sid_history[next].key != htsize) { 2948 next++; 2949 next %= htsize; 2950 } 2951 state->sid_history[next].key = state->curpos; 2952 if (hash == next) 2953 return; 2954 state->sid_history[next].next = state->sid_history[hash].next; 2955 state->sid_history[hash].next = next; 2956 } 2957 2958 void 2959 cleanup_lookup_state(lookup_state_t *state) 2960 { 2961 free(state->sid_history); 2962 free(state->ad_unixuser_attr); 2963 free(state->ad_unixgroup_attr); 2964 free(state->nldap_winname_attr); 2965 free(state->defdom); 2966 } 2967 2968 /* ARGSUSED */ 2969 static 2970 idmap_retcode 2971 dynamic_ephemeral_mapping(lookup_state_t *state, 2972 idmap_mapping *req, idmap_id_res *res) 2973 { 2974 2975 uid_t next_pid; 2976 2977 res->direction = IDMAP_DIRECTION_BI; 2978 2979 if (IS_EPHEMERAL(res->id.idmap_id_u.uid)) { 2980 res->info.how.map_type = IDMAP_MAP_TYPE_EPHEMERAL; 2981 res->info.src = IDMAP_MAP_SRC_CACHE; 2982 return (IDMAP_SUCCESS); 2983 } 2984 2985 if (state->sid_history != NULL && 2986 get_from_sid_history(state, req->id1.idmap_id_u.sid.prefix, 2987 req->id1.idmap_id_u.sid.rid, &next_pid)) { 2988 res->id.idmap_id_u.uid = next_pid; 2989 res->info.how.map_type = IDMAP_MAP_TYPE_EPHEMERAL; 2990 res->info.src = IDMAP_MAP_SRC_NEW; 2991 return (IDMAP_SUCCESS); 2992 } 2993 2994 if (res->id.idtype == IDMAP_UID) { 2995 if (get_next_eph_uid(&next_pid) != 0) 2996 return (IDMAP_ERR_INTERNAL); 2997 res->id.idmap_id_u.uid = next_pid; 2998 } else { 2999 if (get_next_eph_gid(&next_pid) != 0) 3000 return (IDMAP_ERR_INTERNAL); 3001 res->id.idmap_id_u.gid = next_pid; 3002 } 3003 3004 res->info.how.map_type = IDMAP_MAP_TYPE_EPHEMERAL; 3005 res->info.src = IDMAP_MAP_SRC_NEW; 3006 if (state->sid_history != NULL) 3007 add_to_sid_history(state, req->id1.idmap_id_u.sid.prefix, 3008 req->id1.idmap_id_u.sid.rid); 3009 3010 return (IDMAP_SUCCESS); 3011 } 3012 3013 idmap_retcode 3014 sid2pid_second_pass(lookup_state_t *state, 3015 idmap_mapping *req, idmap_id_res *res) 3016 { 3017 idmap_retcode retcode; 3018 3019 /* Check if second pass is needed */ 3020 if (ARE_WE_DONE(req->direction)) 3021 return (res->retcode); 3022 3023 /* Get status from previous pass */ 3024 retcode = res->retcode; 3025 if (retcode != IDMAP_SUCCESS && state->eph_map_unres_sids && 3026 !EMPTY_STRING(req->id1.idmap_id_u.sid.prefix) && 3027 EMPTY_STRING(req->id1name)) { 3028 /* 3029 * We are asked to map an unresolvable SID to a UID or 3030 * GID, but, which? We'll treat all unresolvable SIDs 3031 * as users unless the caller specified which of a UID 3032 * or GID they want. 3033 */ 3034 if (req->id1.idtype == IDMAP_SID) 3035 req->id1.idtype = IDMAP_USID; 3036 if (res->id.idtype == IDMAP_POSIXID) 3037 res->id.idtype = IDMAP_UID; 3038 goto do_eph; 3039 } 3040 if (retcode != IDMAP_SUCCESS) 3041 goto out; 3042 3043 /* 3044 * If directory-based name mapping is enabled then the unixname 3045 * may already have been retrieved from the AD object (AD-mode or 3046 * mixed-mode) or from native LDAP object (nldap-mode) -- done. 3047 */ 3048 if (req->id2name != NULL) { 3049 assert(res->id.idtype != IDMAP_POSIXID); 3050 if (AD_MODE(res->id.idtype, state)) 3051 res->direction = IDMAP_DIRECTION_BI; 3052 else if (NLDAP_MODE(res->id.idtype, state)) 3053 res->direction = IDMAP_DIRECTION_BI; 3054 else if (MIXED_MODE(res->id.idtype, state)) 3055 res->direction = IDMAP_DIRECTION_W2U; 3056 3057 /* 3058 * Special case: (1) If the ad_unixuser_attr and 3059 * ad_unixgroup_attr uses the same attribute 3060 * name and (2) if this is a diagonal mapping 3061 * request and (3) the unixname has been retrieved 3062 * from the AD object -- then we ignore it and fallback 3063 * to name-based mapping rules and ephemeral mapping 3064 * 3065 * Example: 3066 * Properties: 3067 * config/ad_unixuser_attr = "unixname" 3068 * config/ad_unixgroup_attr = "unixname" 3069 * AD user object: 3070 * dn: cn=bob ... 3071 * objectclass: user 3072 * sam: bob 3073 * unixname: bob1234 3074 * AD group object: 3075 * dn: cn=winadmins ... 3076 * objectclass: group 3077 * sam: winadmins 3078 * unixname: unixadmins 3079 * 3080 * In this example whether "unixname" refers to a unixuser 3081 * or unixgroup depends upon the AD object. 3082 * 3083 * $idmap show -c winname:bob gid 3084 * AD lookup by "samAccountName=bob" for 3085 * "ad_unixgroup_attr (i.e unixname)" for directory-based 3086 * mapping would get "bob1234" which is not what we want. 3087 * Now why not getgrnam_r("bob1234") and use it if it 3088 * is indeed a unixgroup? That's because Unix can have 3089 * users and groups with the same name and we clearly 3090 * don't know the intention of the admin here. 3091 * Therefore we ignore this and fallback to name-based 3092 * mapping rules or ephemeral mapping. 3093 */ 3094 if ((AD_MODE(res->id.idtype, state) || 3095 MIXED_MODE(res->id.idtype, state)) && 3096 state->ad_unixuser_attr != NULL && 3097 state->ad_unixgroup_attr != NULL && 3098 strcasecmp(state->ad_unixuser_attr, 3099 state->ad_unixgroup_attr) == 0 && 3100 ((req->id1.idtype == IDMAP_USID && 3101 res->id.idtype == IDMAP_GID) || 3102 (req->id1.idtype == IDMAP_GSID && 3103 res->id.idtype == IDMAP_UID))) { 3104 free(req->id2name); 3105 req->id2name = NULL; 3106 res->id.idmap_id_u.uid = SENTINEL_PID; 3107 /* fallback */ 3108 } else { 3109 if (res->id.idmap_id_u.uid == SENTINEL_PID) 3110 retcode = ns_lookup_byname(req->id2name, 3111 NULL, &res->id); 3112 /* 3113 * If ns_lookup_byname() fails that means the 3114 * unixname (req->id2name), which was obtained 3115 * from the AD object by directory-based mapping, 3116 * is not a valid Unix user/group and therefore 3117 * we return the error to the client instead of 3118 * doing rule-based mapping or ephemeral mapping. 3119 * This way the client can detect the issue. 3120 */ 3121 goto out; 3122 } 3123 } 3124 3125 /* Free any mapping info from Directory based mapping */ 3126 if (res->info.how.map_type != IDMAP_MAP_TYPE_UNKNOWN) 3127 idmap_info_free(&res->info); 3128 3129 /* 3130 * If we don't have unixname then evaluate local name-based 3131 * mapping rules. 3132 */ 3133 retcode = name_based_mapping_sid2pid(state, req, res); 3134 if (retcode != IDMAP_ERR_NOTFOUND) 3135 goto out; 3136 3137 do_eph: 3138 /* If not found, do ephemeral mapping */ 3139 retcode = dynamic_ephemeral_mapping(state, req, res); 3140 3141 out: 3142 res->retcode = idmap_stat4prot(retcode); 3143 if (res->retcode != IDMAP_SUCCESS) { 3144 req->direction = _IDMAP_F_DONE; 3145 res->id.idmap_id_u.uid = UID_NOBODY; 3146 } 3147 if (!ARE_WE_DONE(req->direction)) 3148 state->sid2pid_done = FALSE; 3149 return (retcode); 3150 } 3151 3152 idmap_retcode 3153 update_cache_pid2sid(lookup_state_t *state, 3154 idmap_mapping *req, idmap_id_res *res) 3155 { 3156 char *sql = NULL; 3157 idmap_retcode retcode; 3158 char *map_dn = NULL; 3159 char *map_attr = NULL; 3160 char *map_value = NULL; 3161 char *map_windomain = NULL; 3162 char *map_winname = NULL; 3163 char *map_unixname = NULL; 3164 int map_is_nt4 = FALSE; 3165 3166 /* Check if we need to cache anything */ 3167 if (ARE_WE_DONE(req->direction)) 3168 return (IDMAP_SUCCESS); 3169 3170 /* We don't cache negative entries */ 3171 if (res->retcode != IDMAP_SUCCESS) 3172 return (IDMAP_SUCCESS); 3173 3174 assert(res->direction != IDMAP_DIRECTION_UNDEF); 3175 assert(req->id1.idmap_id_u.uid != SENTINEL_PID); 3176 assert(res->id.idtype != IDMAP_SID); 3177 3178 assert(res->info.how.map_type != IDMAP_MAP_TYPE_UNKNOWN); 3179 switch (res->info.how.map_type) { 3180 case IDMAP_MAP_TYPE_DS_AD: 3181 map_dn = res->info.how.idmap_how_u.ad.dn; 3182 map_attr = res->info.how.idmap_how_u.ad.attr; 3183 map_value = res->info.how.idmap_how_u.ad.value; 3184 break; 3185 3186 case IDMAP_MAP_TYPE_DS_NLDAP: 3187 map_dn = res->info.how.idmap_how_u.nldap.dn; 3188 map_attr = res->info.how.idmap_how_u.nldap.attr; 3189 map_value = res->info.how.idmap_how_u.nldap.value; 3190 break; 3191 3192 case IDMAP_MAP_TYPE_RULE_BASED: 3193 map_windomain = res->info.how.idmap_how_u.rule.windomain; 3194 map_winname = res->info.how.idmap_how_u.rule.winname; 3195 map_unixname = res->info.how.idmap_how_u.rule.unixname; 3196 map_is_nt4 = res->info.how.idmap_how_u.rule.is_nt4; 3197 break; 3198 3199 case IDMAP_MAP_TYPE_EPHEMERAL: 3200 break; 3201 3202 case IDMAP_MAP_TYPE_LOCAL_SID: 3203 break; 3204 3205 default: 3206 /* Dont cache other mapping types */ 3207 assert(FALSE); 3208 } 3209 3210 /* 3211 * Using NULL for u2w instead of 0 so that our trigger allows 3212 * the same pid to be the destination in multiple entries 3213 */ 3214 sql = sqlite_mprintf("INSERT OR REPLACE into idmap_cache " 3215 "(sidprefix, rid, windomain, canon_winname, pid, unixname, " 3216 "is_user, is_wuser, expiration, w2u, u2w, " 3217 "map_type, map_dn, map_attr, map_value, map_windomain, " 3218 "map_winname, map_unixname, map_is_nt4) " 3219 "VALUES(%Q, %u, %Q, %Q, %u, %Q, %d, %d, " 3220 "strftime('%%s','now') + 600, %q, 1, " 3221 "%d, %Q, %Q, %Q, %Q, %Q, %Q, %d); ", 3222 res->id.idmap_id_u.sid.prefix, res->id.idmap_id_u.sid.rid, 3223 req->id2domain, req->id2name, req->id1.idmap_id_u.uid, 3224 req->id1name, (req->id1.idtype == IDMAP_UID) ? 1 : 0, 3225 (res->id.idtype == IDMAP_USID) ? 1 : 0, 3226 (res->direction == 0) ? "1" : NULL, 3227 res->info.how.map_type, map_dn, map_attr, map_value, 3228 map_windomain, map_winname, map_unixname, map_is_nt4); 3229 3230 if (sql == NULL) { 3231 retcode = IDMAP_ERR_INTERNAL; 3232 idmapdlog(LOG_ERR, "Out of memory"); 3233 goto out; 3234 } 3235 3236 retcode = sql_exec_no_cb(state->cache, IDMAP_CACHENAME, sql); 3237 if (retcode != IDMAP_SUCCESS) 3238 goto out; 3239 3240 state->pid2sid_done = FALSE; 3241 sqlite_freemem(sql); 3242 sql = NULL; 3243 3244 /* Check if we need to update namecache */ 3245 if (req->direction & _IDMAP_F_DONT_UPDATE_NAMECACHE) 3246 goto out; 3247 3248 if (req->id2name == NULL) 3249 goto out; 3250 3251 sql = sqlite_mprintf("INSERT OR REPLACE into name_cache " 3252 "(sidprefix, rid, canon_name, domain, type, expiration) " 3253 "VALUES(%Q, %u, %Q, %Q, %d, strftime('%%s','now') + 3600); ", 3254 res->id.idmap_id_u.sid.prefix, res->id.idmap_id_u.sid.rid, 3255 req->id2name, req->id2domain, 3256 (res->id.idtype == IDMAP_USID) ? _IDMAP_T_USER : _IDMAP_T_GROUP); 3257 3258 if (sql == NULL) { 3259 retcode = IDMAP_ERR_INTERNAL; 3260 idmapdlog(LOG_ERR, "Out of memory"); 3261 goto out; 3262 } 3263 3264 retcode = sql_exec_no_cb(state->cache, IDMAP_CACHENAME, sql); 3265 3266 out: 3267 if (!(req->flag & IDMAP_REQ_FLG_MAPPING_INFO)) 3268 idmap_info_free(&res->info); 3269 if (sql != NULL) 3270 sqlite_freemem(sql); 3271 return (retcode); 3272 } 3273 3274 idmap_retcode 3275 update_cache_sid2pid(lookup_state_t *state, 3276 idmap_mapping *req, idmap_id_res *res) 3277 { 3278 char *sql = NULL; 3279 idmap_retcode retcode; 3280 int is_eph_user; 3281 char *map_dn = NULL; 3282 char *map_attr = NULL; 3283 char *map_value = NULL; 3284 char *map_windomain = NULL; 3285 char *map_winname = NULL; 3286 char *map_unixname = NULL; 3287 int map_is_nt4 = FALSE; 3288 3289 /* Check if we need to cache anything */ 3290 if (ARE_WE_DONE(req->direction)) 3291 return (IDMAP_SUCCESS); 3292 3293 /* We don't cache negative entries */ 3294 if (res->retcode != IDMAP_SUCCESS) 3295 return (IDMAP_SUCCESS); 3296 3297 if (req->direction & _IDMAP_F_EXP_EPH_UID) 3298 is_eph_user = 1; 3299 else if (req->direction & _IDMAP_F_EXP_EPH_GID) 3300 is_eph_user = 0; 3301 else 3302 is_eph_user = -1; 3303 3304 if (is_eph_user >= 0 && !IS_EPHEMERAL(res->id.idmap_id_u.uid)) { 3305 sql = sqlite_mprintf("UPDATE idmap_cache " 3306 "SET w2u = 0 WHERE " 3307 "sidprefix = %Q AND rid = %u AND w2u = 1 AND " 3308 "pid >= 2147483648 AND is_user = %d;", 3309 req->id1.idmap_id_u.sid.prefix, 3310 req->id1.idmap_id_u.sid.rid, 3311 is_eph_user); 3312 if (sql == NULL) { 3313 retcode = IDMAP_ERR_INTERNAL; 3314 idmapdlog(LOG_ERR, "Out of memory"); 3315 goto out; 3316 } 3317 3318 retcode = sql_exec_no_cb(state->cache, IDMAP_CACHENAME, sql); 3319 if (retcode != IDMAP_SUCCESS) 3320 goto out; 3321 3322 sqlite_freemem(sql); 3323 sql = NULL; 3324 } 3325 3326 assert(res->direction != IDMAP_DIRECTION_UNDEF); 3327 assert(res->id.idmap_id_u.uid != SENTINEL_PID); 3328 3329 switch (res->info.how.map_type) { 3330 case IDMAP_MAP_TYPE_DS_AD: 3331 map_dn = res->info.how.idmap_how_u.ad.dn; 3332 map_attr = res->info.how.idmap_how_u.ad.attr; 3333 map_value = res->info.how.idmap_how_u.ad.value; 3334 break; 3335 3336 case IDMAP_MAP_TYPE_DS_NLDAP: 3337 map_dn = res->info.how.idmap_how_u.nldap.dn; 3338 map_attr = res->info.how.idmap_how_u.ad.attr; 3339 map_value = res->info.how.idmap_how_u.nldap.value; 3340 break; 3341 3342 case IDMAP_MAP_TYPE_RULE_BASED: 3343 map_windomain = res->info.how.idmap_how_u.rule.windomain; 3344 map_winname = res->info.how.idmap_how_u.rule.winname; 3345 map_unixname = res->info.how.idmap_how_u.rule.unixname; 3346 map_is_nt4 = res->info.how.idmap_how_u.rule.is_nt4; 3347 break; 3348 3349 case IDMAP_MAP_TYPE_EPHEMERAL: 3350 break; 3351 3352 default: 3353 /* Dont cache other mapping types */ 3354 assert(FALSE); 3355 } 3356 3357 sql = sqlite_mprintf("INSERT OR REPLACE into idmap_cache " 3358 "(sidprefix, rid, windomain, canon_winname, pid, unixname, " 3359 "is_user, is_wuser, expiration, w2u, u2w, " 3360 "map_type, map_dn, map_attr, map_value, map_windomain, " 3361 "map_winname, map_unixname, map_is_nt4) " 3362 "VALUES(%Q, %u, %Q, %Q, %u, %Q, %d, %d, " 3363 "strftime('%%s','now') + 600, 1, %q, " 3364 "%d, %Q, %Q, %Q, %Q, %Q, %Q, %d);", 3365 req->id1.idmap_id_u.sid.prefix, req->id1.idmap_id_u.sid.rid, 3366 (req->id1domain != NULL) ? req->id1domain : "", req->id1name, 3367 res->id.idmap_id_u.uid, req->id2name, 3368 (res->id.idtype == IDMAP_UID) ? 1 : 0, 3369 (req->id1.idtype == IDMAP_USID) ? 1 : 0, 3370 (res->direction == 0) ? "1" : NULL, 3371 res->info.how.map_type, map_dn, map_attr, map_value, 3372 map_windomain, map_winname, map_unixname, map_is_nt4); 3373 3374 if (sql == NULL) { 3375 retcode = IDMAP_ERR_INTERNAL; 3376 idmapdlog(LOG_ERR, "Out of memory"); 3377 goto out; 3378 } 3379 3380 retcode = sql_exec_no_cb(state->cache, IDMAP_CACHENAME, sql); 3381 if (retcode != IDMAP_SUCCESS) 3382 goto out; 3383 3384 state->sid2pid_done = FALSE; 3385 sqlite_freemem(sql); 3386 sql = NULL; 3387 3388 /* Check if we need to update namecache */ 3389 if (req->direction & _IDMAP_F_DONT_UPDATE_NAMECACHE) 3390 goto out; 3391 3392 if (EMPTY_STRING(req->id1name)) 3393 goto out; 3394 3395 sql = sqlite_mprintf("INSERT OR REPLACE into name_cache " 3396 "(sidprefix, rid, canon_name, domain, type, expiration) " 3397 "VALUES(%Q, %u, %Q, %Q, %d, strftime('%%s','now') + 3600); ", 3398 req->id1.idmap_id_u.sid.prefix, req->id1.idmap_id_u.sid.rid, 3399 req->id1name, req->id1domain, 3400 (req->id1.idtype == IDMAP_USID) ? _IDMAP_T_USER : _IDMAP_T_GROUP); 3401 3402 if (sql == NULL) { 3403 retcode = IDMAP_ERR_INTERNAL; 3404 idmapdlog(LOG_ERR, "Out of memory"); 3405 goto out; 3406 } 3407 3408 retcode = sql_exec_no_cb(state->cache, IDMAP_CACHENAME, sql); 3409 3410 out: 3411 if (!(req->flag & IDMAP_REQ_FLG_MAPPING_INFO)) 3412 idmap_info_free(&res->info); 3413 3414 if (sql != NULL) 3415 sqlite_freemem(sql); 3416 return (retcode); 3417 } 3418 3419 static 3420 idmap_retcode 3421 lookup_cache_pid2sid(sqlite *cache, idmap_mapping *req, idmap_id_res *res, 3422 int is_user, int getname) 3423 { 3424 char *end; 3425 char *sql = NULL; 3426 const char **values; 3427 sqlite_vm *vm = NULL; 3428 int ncol; 3429 idmap_retcode retcode = IDMAP_SUCCESS; 3430 time_t curtime; 3431 idmap_id_type idtype; 3432 3433 /* Current time */ 3434 errno = 0; 3435 if ((curtime = time(NULL)) == (time_t)-1) { 3436 idmapdlog(LOG_ERR, "Failed to get current time (%s)", 3437 strerror(errno)); 3438 retcode = IDMAP_ERR_INTERNAL; 3439 goto out; 3440 } 3441 3442 /* SQL to lookup the cache by pid or by unixname */ 3443 if (req->id1.idmap_id_u.uid != SENTINEL_PID) { 3444 sql = sqlite_mprintf("SELECT sidprefix, rid, " 3445 "canon_winname, windomain, w2u, is_wuser, " 3446 "map_type, map_dn, map_attr, map_value, map_windomain, " 3447 "map_winname, map_unixname, map_is_nt4 " 3448 "FROM idmap_cache WHERE " 3449 "pid = %u AND u2w = 1 AND is_user = %d AND " 3450 "(pid >= 2147483648 OR " 3451 "(expiration = 0 OR expiration ISNULL OR " 3452 "expiration > %d));", 3453 req->id1.idmap_id_u.uid, is_user, curtime); 3454 } else if (req->id1name != NULL) { 3455 sql = sqlite_mprintf("SELECT sidprefix, rid, " 3456 "canon_winname, windomain, w2u, is_wuser, " 3457 "map_type, map_dn, map_attr, map_value, map_windomain, " 3458 "map_winname, map_unixname, map_is_nt4 " 3459 "FROM idmap_cache WHERE " 3460 "unixname = %Q AND u2w = 1 AND is_user = %d AND " 3461 "(pid >= 2147483648 OR " 3462 "(expiration = 0 OR expiration ISNULL OR " 3463 "expiration > %d));", 3464 req->id1name, is_user, curtime); 3465 } else { 3466 retcode = IDMAP_ERR_ARG; 3467 goto out; 3468 } 3469 3470 if (sql == NULL) { 3471 idmapdlog(LOG_ERR, "Out of memory"); 3472 retcode = IDMAP_ERR_MEMORY; 3473 goto out; 3474 } 3475 retcode = sql_compile_n_step_once( 3476 cache, sql, &vm, &ncol, 14, &values); 3477 sqlite_freemem(sql); 3478 3479 if (retcode == IDMAP_ERR_NOTFOUND) 3480 goto out; 3481 else if (retcode == IDMAP_SUCCESS) { 3482 /* sanity checks */ 3483 if (values[0] == NULL || values[1] == NULL) { 3484 retcode = IDMAP_ERR_CACHE; 3485 goto out; 3486 } 3487 3488 switch (res->id.idtype) { 3489 case IDMAP_SID: 3490 case IDMAP_USID: 3491 case IDMAP_GSID: 3492 idtype = strtol(values[5], &end, 10) == 1 3493 ? IDMAP_USID : IDMAP_GSID; 3494 3495 if (res->id.idtype == IDMAP_USID && 3496 idtype != IDMAP_USID) { 3497 retcode = IDMAP_ERR_NOTUSER; 3498 goto out; 3499 } else if (res->id.idtype == IDMAP_GSID && 3500 idtype != IDMAP_GSID) { 3501 retcode = IDMAP_ERR_NOTGROUP; 3502 goto out; 3503 } 3504 res->id.idtype = idtype; 3505 3506 res->id.idmap_id_u.sid.rid = 3507 strtoul(values[1], &end, 10); 3508 res->id.idmap_id_u.sid.prefix = strdup(values[0]); 3509 if (res->id.idmap_id_u.sid.prefix == NULL) { 3510 idmapdlog(LOG_ERR, "Out of memory"); 3511 retcode = IDMAP_ERR_MEMORY; 3512 goto out; 3513 } 3514 3515 if (values[4] != NULL) 3516 res->direction = 3517 (strtol(values[4], &end, 10) == 0)? 3518 IDMAP_DIRECTION_U2W:IDMAP_DIRECTION_BI; 3519 else 3520 res->direction = IDMAP_DIRECTION_U2W; 3521 3522 if (getname == 0 || values[2] == NULL) 3523 break; 3524 req->id2name = strdup(values[2]); 3525 if (req->id2name == NULL) { 3526 idmapdlog(LOG_ERR, "Out of memory"); 3527 retcode = IDMAP_ERR_MEMORY; 3528 goto out; 3529 } 3530 3531 if (values[3] == NULL) 3532 break; 3533 req->id2domain = strdup(values[3]); 3534 if (req->id2domain == NULL) { 3535 idmapdlog(LOG_ERR, "Out of memory"); 3536 retcode = IDMAP_ERR_MEMORY; 3537 goto out; 3538 } 3539 3540 break; 3541 default: 3542 retcode = IDMAP_ERR_NOTSUPPORTED; 3543 break; 3544 } 3545 if (req->flag & IDMAP_REQ_FLG_MAPPING_INFO) { 3546 res->info.src = IDMAP_MAP_SRC_CACHE; 3547 res->info.how.map_type = strtoul(values[6], &end, 10); 3548 switch (res->info.how.map_type) { 3549 case IDMAP_MAP_TYPE_DS_AD: 3550 res->info.how.idmap_how_u.ad.dn = 3551 strdup(values[7]); 3552 res->info.how.idmap_how_u.ad.attr = 3553 strdup(values[8]); 3554 res->info.how.idmap_how_u.ad.value = 3555 strdup(values[9]); 3556 break; 3557 3558 case IDMAP_MAP_TYPE_DS_NLDAP: 3559 res->info.how.idmap_how_u.nldap.dn = 3560 strdup(values[7]); 3561 res->info.how.idmap_how_u.nldap.attr = 3562 strdup(values[8]); 3563 res->info.how.idmap_how_u.nldap.value = 3564 strdup(values[9]); 3565 break; 3566 3567 case IDMAP_MAP_TYPE_RULE_BASED: 3568 res->info.how.idmap_how_u.rule.windomain = 3569 strdup(values[10]); 3570 res->info.how.idmap_how_u.rule.winname = 3571 strdup(values[11]); 3572 res->info.how.idmap_how_u.rule.unixname = 3573 strdup(values[12]); 3574 res->info.how.idmap_how_u.rule.is_nt4 = 3575 strtoul(values[13], &end, 10); 3576 res->info.how.idmap_how_u.rule.is_user = 3577 is_user; 3578 res->info.how.idmap_how_u.rule.is_wuser = 3579 strtol(values[5], &end, 10); 3580 break; 3581 3582 case IDMAP_MAP_TYPE_EPHEMERAL: 3583 break; 3584 3585 case IDMAP_MAP_TYPE_LOCAL_SID: 3586 break; 3587 3588 case IDMAP_MAP_TYPE_KNOWN_SID: 3589 break; 3590 3591 default: 3592 /* Unknow mapping type */ 3593 assert(FALSE); 3594 } 3595 } 3596 } 3597 3598 out: 3599 if (vm != NULL) 3600 (void) sqlite_finalize(vm, NULL); 3601 return (retcode); 3602 } 3603 3604 static 3605 idmap_retcode 3606 lookup_cache_name2sid(sqlite *cache, const char *name, const char *domain, 3607 char **canonname, char **sidprefix, idmap_rid_t *rid, int *type) 3608 { 3609 char *end, *lower_name; 3610 char *sql = NULL; 3611 const char **values; 3612 sqlite_vm *vm = NULL; 3613 int ncol; 3614 time_t curtime; 3615 idmap_retcode retcode = IDMAP_SUCCESS; 3616 3617 /* Get current time */ 3618 errno = 0; 3619 if ((curtime = time(NULL)) == (time_t)-1) { 3620 idmapdlog(LOG_ERR, "Failed to get current time (%s)", 3621 strerror(errno)); 3622 retcode = IDMAP_ERR_INTERNAL; 3623 goto out; 3624 } 3625 3626 /* SQL to lookup the cache */ 3627 if ((lower_name = tolower_u8(name)) == NULL) 3628 lower_name = (char *)name; 3629 sql = sqlite_mprintf("SELECT sidprefix, rid, type, canon_name " 3630 "FROM name_cache WHERE name = %Q AND domain = %Q AND " 3631 "(expiration = 0 OR expiration ISNULL OR " 3632 "expiration > %d);", lower_name, domain, curtime); 3633 if (lower_name != name) 3634 free(lower_name); 3635 if (sql == NULL) { 3636 idmapdlog(LOG_ERR, "Out of memory"); 3637 retcode = IDMAP_ERR_MEMORY; 3638 goto out; 3639 } 3640 retcode = sql_compile_n_step_once(cache, sql, &vm, &ncol, 4, &values); 3641 sqlite_freemem(sql); 3642 3643 if (retcode == IDMAP_SUCCESS) { 3644 if (type != NULL) { 3645 if (values[2] == NULL) { 3646 retcode = IDMAP_ERR_CACHE; 3647 goto out; 3648 } 3649 *type = strtol(values[2], &end, 10); 3650 } 3651 3652 if (values[0] == NULL || values[1] == NULL) { 3653 retcode = IDMAP_ERR_CACHE; 3654 goto out; 3655 } 3656 3657 if (canonname != NULL) { 3658 assert(values[3] != NULL); 3659 if ((*canonname = strdup(values[3])) == NULL) { 3660 idmapdlog(LOG_ERR, "Out of memory"); 3661 retcode = IDMAP_ERR_MEMORY; 3662 goto out; 3663 } 3664 } 3665 3666 if ((*sidprefix = strdup(values[0])) == NULL) { 3667 idmapdlog(LOG_ERR, "Out of memory"); 3668 retcode = IDMAP_ERR_MEMORY; 3669 if (canonname != NULL) { 3670 free(*canonname); 3671 *canonname = NULL; 3672 } 3673 goto out; 3674 } 3675 *rid = strtoul(values[1], &end, 10); 3676 } 3677 3678 out: 3679 if (vm != NULL) 3680 (void) sqlite_finalize(vm, NULL); 3681 return (retcode); 3682 } 3683 3684 static 3685 idmap_retcode 3686 ad_lookup_by_winname(lookup_state_t *state, 3687 const char *name, const char *domain, int eunixtype, 3688 char **dn, char **attr, char **value, char **canonname, 3689 char **sidprefix, idmap_rid_t *rid, int *wintype, 3690 char **unixname) 3691 { 3692 int retries; 3693 idmap_query_state_t *qs = NULL; 3694 idmap_retcode rc, retcode; 3695 int i; 3696 int found_ad = 0; 3697 3698 RDLOCK_CONFIG(); 3699 if (_idmapdstate.num_ads > 0) { 3700 for (i = 0; i < _idmapdstate.num_ads && !found_ad; i++) { 3701 retries = 0; 3702 retry: 3703 retcode = idmap_lookup_batch_start(_idmapdstate.ads[i], 3704 1, &qs); 3705 if (retcode != IDMAP_SUCCESS) { 3706 if (retcode == IDMAP_ERR_RETRIABLE_NET_ERR && 3707 retries++ < ADUTILS_DEF_NUM_RETRIES) 3708 goto retry; 3709 degrade_svc(1, "failed to create request for " 3710 "AD lookup by winname"); 3711 return (retcode); 3712 } 3713 3714 restore_svc(); 3715 3716 if (state != NULL && i == 0) { 3717 /* 3718 * Directory based name mapping is only 3719 * performed within the joined forest (i == 0). 3720 * We don't trust other "trusted" forests to 3721 * provide DS-based name mapping information 3722 * because AD's definition of "cross-forest 3723 * trust" does not encompass this sort of 3724 * behavior. 3725 */ 3726 idmap_lookup_batch_set_unixattr(qs, 3727 state->ad_unixuser_attr, 3728 state->ad_unixgroup_attr); 3729 } 3730 3731 retcode = idmap_name2sid_batch_add1(qs, name, domain, 3732 eunixtype, dn, attr, value, canonname, sidprefix, 3733 rid, wintype, unixname, &rc); 3734 if (retcode == IDMAP_ERR_DOMAIN_NOTFOUND) { 3735 idmap_lookup_release_batch(&qs); 3736 continue; 3737 } 3738 found_ad = 1; 3739 if (retcode != IDMAP_SUCCESS) 3740 idmap_lookup_release_batch(&qs); 3741 else 3742 retcode = idmap_lookup_batch_end(&qs); 3743 3744 if (retcode == IDMAP_ERR_RETRIABLE_NET_ERR && 3745 retries++ < ADUTILS_DEF_NUM_RETRIES) 3746 goto retry; 3747 else if (retcode == IDMAP_ERR_RETRIABLE_NET_ERR) 3748 degrade_svc(1, 3749 "some AD lookups timed out repeatedly"); 3750 } 3751 } else { 3752 /* No AD case */ 3753 retcode = IDMAP_ERR_NO_ACTIVEDIRECTORY; 3754 } 3755 UNLOCK_CONFIG(); 3756 3757 if (retcode != IDMAP_SUCCESS) { 3758 idmapdlog(LOG_NOTICE, "AD lookup by winname failed"); 3759 return (retcode); 3760 } 3761 return (rc); 3762 } 3763 3764 idmap_retcode 3765 lookup_name2sid(sqlite *cache, const char *name, const char *domain, 3766 int *is_wuser, char **canonname, char **sidprefix, 3767 idmap_rid_t *rid, idmap_mapping *req, int local_only) 3768 { 3769 int type; 3770 idmap_retcode retcode; 3771 3772 *sidprefix = NULL; 3773 if (canonname != NULL) 3774 *canonname = NULL; 3775 3776 /* Lookup well-known SIDs table */ 3777 retcode = lookup_wksids_name2sid(name, canonname, sidprefix, rid, 3778 &type); 3779 if (retcode == IDMAP_SUCCESS) { 3780 req->direction |= _IDMAP_F_DONT_UPDATE_NAMECACHE; 3781 goto out; 3782 } else if (retcode != IDMAP_ERR_NOTFOUND) { 3783 return (retcode); 3784 } 3785 3786 /* Lookup cache */ 3787 retcode = lookup_cache_name2sid(cache, name, domain, canonname, 3788 sidprefix, rid, &type); 3789 if (retcode == IDMAP_SUCCESS) { 3790 req->direction |= _IDMAP_F_DONT_UPDATE_NAMECACHE; 3791 goto out; 3792 } else if (retcode != IDMAP_ERR_NOTFOUND) { 3793 return (retcode); 3794 } 3795 3796 /* 3797 * The caller may be using this function to determine if this 3798 * request needs to be marked for AD lookup or not 3799 * (i.e. _IDMAP_F_LOOKUP_AD) and therefore may not want this 3800 * function to AD lookup now. 3801 */ 3802 if (local_only) 3803 return (retcode); 3804 3805 /* Lookup AD */ 3806 retcode = ad_lookup_by_winname(NULL, name, domain, _IDMAP_T_UNDEF, 3807 NULL, NULL, NULL, canonname, sidprefix, rid, &type, NULL); 3808 if (retcode != IDMAP_SUCCESS) 3809 return (retcode); 3810 3811 out: 3812 /* 3813 * Entry found (cache or Windows lookup) 3814 * is_wuser is both input as well as output parameter 3815 */ 3816 if (*is_wuser == 1 && type != _IDMAP_T_USER) 3817 retcode = IDMAP_ERR_NOTUSER; 3818 else if (*is_wuser == 0 && type != _IDMAP_T_GROUP) 3819 retcode = IDMAP_ERR_NOTGROUP; 3820 else if (*is_wuser == -1) { 3821 /* Caller wants to know if its user or group */ 3822 if (type == _IDMAP_T_USER) 3823 *is_wuser = 1; 3824 else if (type == _IDMAP_T_GROUP) 3825 *is_wuser = 0; 3826 else 3827 retcode = IDMAP_ERR_SID; 3828 } 3829 3830 if (retcode != IDMAP_SUCCESS) { 3831 free(*sidprefix); 3832 *sidprefix = NULL; 3833 if (canonname != NULL) { 3834 free(*canonname); 3835 *canonname = NULL; 3836 } 3837 } 3838 return (retcode); 3839 } 3840 3841 static 3842 idmap_retcode 3843 name_based_mapping_pid2sid(lookup_state_t *state, const char *unixname, 3844 int is_user, idmap_mapping *req, idmap_id_res *res) 3845 { 3846 const char *winname, *windomain; 3847 char *canonname; 3848 char *sql = NULL, *errmsg = NULL; 3849 idmap_retcode retcode; 3850 char *end; 3851 const char **values; 3852 sqlite_vm *vm = NULL; 3853 int ncol, r; 3854 int is_wuser; 3855 const char *me = "name_based_mapping_pid2sid"; 3856 int non_wild_match = FALSE; 3857 idmap_namerule *rule = &res->info.how.idmap_how_u.rule; 3858 int direction; 3859 3860 assert(unixname != NULL); /* We have unixname */ 3861 assert(req->id2name == NULL); /* We don't have winname */ 3862 assert(res->id.idmap_id_u.sid.prefix == NULL); /* No SID either */ 3863 3864 sql = sqlite_mprintf( 3865 "SELECT winname_display, windomain, w2u_order, " 3866 "is_wuser, unixname, is_nt4 " 3867 "FROM namerules WHERE " 3868 "u2w_order > 0 AND is_user = %d AND " 3869 "(unixname = %Q OR unixname = '*') " 3870 "ORDER BY u2w_order ASC;", is_user, unixname); 3871 if (sql == NULL) { 3872 idmapdlog(LOG_ERR, "Out of memory"); 3873 retcode = IDMAP_ERR_MEMORY; 3874 goto out; 3875 } 3876 3877 if (sqlite_compile(state->db, sql, NULL, &vm, &errmsg) != SQLITE_OK) { 3878 retcode = IDMAP_ERR_INTERNAL; 3879 idmapdlog(LOG_ERR, "%s: database error (%s)", me, 3880 CHECK_NULL(errmsg)); 3881 sqlite_freemem(errmsg); 3882 goto out; 3883 } 3884 3885 for (;;) { 3886 r = sqlite_step(vm, &ncol, &values, NULL); 3887 assert(r != SQLITE_LOCKED && r != SQLITE_BUSY); 3888 if (r == SQLITE_ROW) { 3889 if (ncol < 6) { 3890 retcode = IDMAP_ERR_INTERNAL; 3891 goto out; 3892 } 3893 if (values[0] == NULL) { 3894 /* values [1] and [2] can be null */ 3895 retcode = IDMAP_ERR_INTERNAL; 3896 goto out; 3897 } 3898 3899 if (values[2] != NULL) 3900 direction = 3901 (strtol(values[2], &end, 10) == 0)? 3902 IDMAP_DIRECTION_U2W:IDMAP_DIRECTION_BI; 3903 else 3904 direction = IDMAP_DIRECTION_U2W; 3905 3906 if (EMPTY_NAME(values[0])) { 3907 idmap_namerule_set(rule, values[1], values[0], 3908 values[4], is_user, 3909 strtol(values[3], &end, 10), 3910 strtol(values[5], &end, 10), 3911 direction); 3912 retcode = IDMAP_ERR_NOMAPPING; 3913 goto out; 3914 } 3915 3916 if (values[0][0] == '*') { 3917 winname = unixname; 3918 if (non_wild_match) { 3919 /* 3920 * There were non-wildcard rules 3921 * where the Windows identity doesn't 3922 * exist. Return no mapping. 3923 */ 3924 retcode = IDMAP_ERR_NOMAPPING; 3925 goto out; 3926 } 3927 } else { 3928 /* Save first non-wild match rule */ 3929 if (!non_wild_match) { 3930 idmap_namerule_set(rule, values[1], 3931 values[0], values[4], 3932 is_user, 3933 strtol(values[3], &end, 10), 3934 strtol(values[5], &end, 10), 3935 direction); 3936 non_wild_match = TRUE; 3937 } 3938 winname = values[0]; 3939 } 3940 is_wuser = res->id.idtype == IDMAP_USID ? 1 3941 : res->id.idtype == IDMAP_GSID ? 0 3942 : -1; 3943 if (values[1] != NULL) 3944 windomain = values[1]; 3945 else if (state->defdom != NULL) 3946 windomain = state->defdom; 3947 else { 3948 idmapdlog(LOG_ERR, "%s: no domain", me); 3949 retcode = IDMAP_ERR_DOMAIN_NOTFOUND; 3950 goto out; 3951 } 3952 3953 retcode = lookup_name2sid(state->cache, 3954 winname, windomain, 3955 &is_wuser, &canonname, 3956 &res->id.idmap_id_u.sid.prefix, 3957 &res->id.idmap_id_u.sid.rid, req, 0); 3958 3959 if (retcode == IDMAP_ERR_NOTFOUND) { 3960 continue; 3961 } 3962 goto out; 3963 3964 } else if (r == SQLITE_DONE) { 3965 /* 3966 * If there were non-wildcard rules where 3967 * Windows identity doesn't exist 3968 * return no mapping. 3969 */ 3970 if (non_wild_match) 3971 retcode = IDMAP_ERR_NOMAPPING; 3972 else 3973 retcode = IDMAP_ERR_NOTFOUND; 3974 goto out; 3975 } else { 3976 (void) sqlite_finalize(vm, &errmsg); 3977 vm = NULL; 3978 idmapdlog(LOG_ERR, "%s: database error (%s)", me, 3979 CHECK_NULL(errmsg)); 3980 sqlite_freemem(errmsg); 3981 retcode = IDMAP_ERR_INTERNAL; 3982 goto out; 3983 } 3984 } 3985 3986 out: 3987 if (sql != NULL) 3988 sqlite_freemem(sql); 3989 if (retcode == IDMAP_SUCCESS) { 3990 res->id.idtype = is_wuser ? IDMAP_USID : IDMAP_GSID; 3991 3992 if (values[2] != NULL) 3993 res->direction = 3994 (strtol(values[2], &end, 10) == 0)? 3995 IDMAP_DIRECTION_U2W:IDMAP_DIRECTION_BI; 3996 else 3997 res->direction = IDMAP_DIRECTION_U2W; 3998 3999 req->id2name = canonname; 4000 if (req->id2name != NULL) { 4001 req->id2domain = strdup(windomain); 4002 if (req->id2domain == NULL) 4003 retcode = IDMAP_ERR_MEMORY; 4004 } 4005 } 4006 4007 if (retcode == IDMAP_SUCCESS) { 4008 idmap_namerule_set(rule, values[1], values[0], values[4], 4009 is_user, strtol(values[3], &end, 10), 4010 strtol(values[5], &end, 10), 4011 rule->direction); 4012 } 4013 4014 if (retcode != IDMAP_ERR_NOTFOUND) { 4015 res->info.how.map_type = IDMAP_MAP_TYPE_RULE_BASED; 4016 res->info.src = IDMAP_MAP_SRC_NEW; 4017 } 4018 4019 if (vm != NULL) 4020 (void) sqlite_finalize(vm, NULL); 4021 return (retcode); 4022 } 4023 4024 /* 4025 * Convention when processing unix2win requests: 4026 * 4027 * Unix identity: 4028 * req->id1name = 4029 * unixname if given otherwise unixname found will be placed 4030 * here. 4031 * req->id1domain = 4032 * NOT USED 4033 * req->id1.idtype = 4034 * Given type (IDMAP_UID or IDMAP_GID) 4035 * req->id1..[uid or gid] = 4036 * UID/GID if given otherwise UID/GID found will be placed here. 4037 * 4038 * Windows identity: 4039 * req->id2name = 4040 * winname found will be placed here. 4041 * req->id2domain = 4042 * windomain found will be placed here. 4043 * res->id.idtype = 4044 * Target type initialized from req->id2.idtype. If 4045 * it is IDMAP_SID then actual type (IDMAP_USID/GSID) found 4046 * will be placed here. 4047 * req->id..sid.[prefix, rid] = 4048 * SID found will be placed here. 4049 * 4050 * Others: 4051 * res->retcode = 4052 * Return status for this request will be placed here. 4053 * res->direction = 4054 * Direction found will be placed here. Direction 4055 * meaning whether the resultant mapping is valid 4056 * only from unix2win or bi-directional. 4057 * req->direction = 4058 * INTERNAL USE. Used by idmapd to set various 4059 * flags (_IDMAP_F_xxxx) to aid in processing 4060 * of the request. 4061 * req->id2.idtype = 4062 * INTERNAL USE. Initially this is the requested target 4063 * type and is used to initialize res->id.idtype. 4064 * ad_lookup_batch() uses this field temporarily to store 4065 * sid_type obtained by the batched AD lookups and after 4066 * use resets it to IDMAP_NONE to prevent xdr from 4067 * mis-interpreting the contents of req->id2. 4068 * req->id2..[uid or gid or sid] = 4069 * NOT USED 4070 */ 4071 4072 /* 4073 * This function does the following: 4074 * 1. Lookup well-known SIDs table. 4075 * 2. Lookup cache. 4076 * 3. Check if the client does not want new mapping to be allocated 4077 * in which case this pass is the final pass. 4078 * 4. Set AD/NLDAP lookup flags if it determines that the next stage needs 4079 * to do AD/NLDAP lookup. 4080 */ 4081 idmap_retcode 4082 pid2sid_first_pass(lookup_state_t *state, idmap_mapping *req, 4083 idmap_id_res *res, int is_user, int getname) 4084 { 4085 idmap_retcode retcode; 4086 bool_t gen_localsid_on_err = FALSE; 4087 4088 /* Initialize result */ 4089 res->id.idtype = req->id2.idtype; 4090 res->direction = IDMAP_DIRECTION_UNDEF; 4091 4092 if (req->id2.idmap_id_u.sid.prefix != NULL) { 4093 /* sanitize sidprefix */ 4094 free(req->id2.idmap_id_u.sid.prefix); 4095 req->id2.idmap_id_u.sid.prefix = NULL; 4096 } 4097 4098 /* Find pid */ 4099 if (req->id1.idmap_id_u.uid == SENTINEL_PID) { 4100 if (ns_lookup_byname(req->id1name, NULL, &req->id1) 4101 != IDMAP_SUCCESS) { 4102 retcode = IDMAP_ERR_NOMAPPING; 4103 goto out; 4104 } 4105 } 4106 4107 /* Lookup well-known SIDs table */ 4108 retcode = lookup_wksids_pid2sid(req, res, is_user); 4109 if (retcode != IDMAP_ERR_NOTFOUND) 4110 goto out; 4111 4112 /* Lookup cache */ 4113 retcode = lookup_cache_pid2sid(state->cache, req, res, is_user, 4114 getname); 4115 if (retcode != IDMAP_ERR_NOTFOUND) 4116 goto out; 4117 4118 /* Ephemeral ids cannot be allocated during pid2sid */ 4119 if (IS_EPHEMERAL(req->id1.idmap_id_u.uid)) { 4120 retcode = IDMAP_ERR_NOMAPPING; 4121 goto out; 4122 } 4123 4124 if (DO_NOT_ALLOC_NEW_ID_MAPPING(req)) { 4125 retcode = IDMAP_ERR_NONE_GENERATED; 4126 goto out; 4127 } 4128 4129 if (AVOID_NAMESERVICE(req)) { 4130 gen_localsid_on_err = TRUE; 4131 retcode = IDMAP_ERR_NOMAPPING; 4132 goto out; 4133 } 4134 4135 /* Set flags for the next stage */ 4136 if (AD_MODE(req->id1.idtype, state)) { 4137 /* 4138 * If AD-based name mapping is enabled then the next stage 4139 * will need to lookup AD using unixname to get the 4140 * corresponding winname. 4141 */ 4142 if (req->id1name == NULL) { 4143 /* Get unixname if only pid is given. */ 4144 retcode = ns_lookup_bypid(req->id1.idmap_id_u.uid, 4145 is_user, &req->id1name); 4146 if (retcode != IDMAP_SUCCESS) { 4147 gen_localsid_on_err = TRUE; 4148 goto out; 4149 } 4150 } 4151 req->direction |= _IDMAP_F_LOOKUP_AD; 4152 state->ad_nqueries++; 4153 } else if (NLDAP_OR_MIXED_MODE(req->id1.idtype, state)) { 4154 /* 4155 * If native LDAP or mixed mode is enabled for name mapping 4156 * then the next stage will need to lookup native LDAP using 4157 * unixname/pid to get the corresponding winname. 4158 */ 4159 req->direction |= _IDMAP_F_LOOKUP_NLDAP; 4160 state->nldap_nqueries++; 4161 } 4162 4163 /* 4164 * Failed to find non-expired entry in cache. Set the flag to 4165 * indicate that we are not done yet. 4166 */ 4167 state->pid2sid_done = FALSE; 4168 req->direction |= _IDMAP_F_NOTDONE; 4169 retcode = IDMAP_SUCCESS; 4170 4171 out: 4172 res->retcode = idmap_stat4prot(retcode); 4173 if (ARE_WE_DONE(req->direction) && res->retcode != IDMAP_SUCCESS) 4174 if (gen_localsid_on_err == TRUE) 4175 (void) generate_localsid(req, res, is_user, TRUE); 4176 return (retcode); 4177 } 4178 4179 idmap_retcode 4180 pid2sid_second_pass(lookup_state_t *state, idmap_mapping *req, 4181 idmap_id_res *res, int is_user) 4182 { 4183 bool_t gen_localsid_on_err = TRUE; 4184 idmap_retcode retcode = IDMAP_SUCCESS; 4185 4186 /* Check if second pass is needed */ 4187 if (ARE_WE_DONE(req->direction)) 4188 return (res->retcode); 4189 4190 /* Get status from previous pass */ 4191 retcode = res->retcode; 4192 if (retcode != IDMAP_SUCCESS) 4193 goto out; 4194 4195 /* 4196 * If directory-based name mapping is enabled then the winname 4197 * may already have been retrieved from the AD object (AD-mode) 4198 * or from native LDAP object (nldap-mode or mixed-mode). 4199 * Note that if we have winname but no SID then it's an error 4200 * because this implies that the Native LDAP entry contains 4201 * winname which does not exist and it's better that we return 4202 * an error instead of doing rule-based mapping so that the user 4203 * can detect the issue and take appropriate action. 4204 */ 4205 if (req->id2name != NULL) { 4206 /* Return notfound if we've winname but no SID. */ 4207 if (res->id.idmap_id_u.sid.prefix == NULL) { 4208 retcode = IDMAP_ERR_NOTFOUND; 4209 goto out; 4210 } 4211 if (AD_MODE(req->id1.idtype, state)) 4212 res->direction = IDMAP_DIRECTION_BI; 4213 else if (NLDAP_MODE(req->id1.idtype, state)) 4214 res->direction = IDMAP_DIRECTION_BI; 4215 else if (MIXED_MODE(req->id1.idtype, state)) 4216 res->direction = IDMAP_DIRECTION_W2U; 4217 goto out; 4218 } else if (res->id.idmap_id_u.sid.prefix != NULL) { 4219 /* 4220 * We've SID but no winname. This is fine because 4221 * the caller may have only requested SID. 4222 */ 4223 goto out; 4224 } 4225 4226 /* Free any mapping info from Directory based mapping */ 4227 if (res->info.how.map_type != IDMAP_MAP_TYPE_UNKNOWN) 4228 idmap_info_free(&res->info); 4229 4230 if (req->id1name == NULL) { 4231 /* Get unixname from name service */ 4232 retcode = ns_lookup_bypid(req->id1.idmap_id_u.uid, is_user, 4233 &req->id1name); 4234 if (retcode != IDMAP_SUCCESS) 4235 goto out; 4236 } else if (req->id1.idmap_id_u.uid == SENTINEL_PID) { 4237 /* Get pid from name service */ 4238 retcode = ns_lookup_byname(req->id1name, NULL, &req->id1); 4239 if (retcode != IDMAP_SUCCESS) { 4240 gen_localsid_on_err = FALSE; 4241 goto out; 4242 } 4243 } 4244 4245 /* Use unixname to evaluate local name-based mapping rules */ 4246 retcode = name_based_mapping_pid2sid(state, req->id1name, is_user, 4247 req, res); 4248 if (retcode == IDMAP_ERR_NOTFOUND) { 4249 retcode = generate_localsid(req, res, is_user, FALSE); 4250 gen_localsid_on_err = FALSE; 4251 } 4252 4253 out: 4254 res->retcode = idmap_stat4prot(retcode); 4255 if (res->retcode != IDMAP_SUCCESS) { 4256 req->direction = _IDMAP_F_DONE; 4257 free(req->id2name); 4258 req->id2name = NULL; 4259 free(req->id2domain); 4260 req->id2domain = NULL; 4261 if (gen_localsid_on_err == TRUE) 4262 (void) generate_localsid(req, res, is_user, TRUE); 4263 else 4264 res->id.idtype = is_user ? IDMAP_USID : IDMAP_GSID; 4265 } 4266 if (!ARE_WE_DONE(req->direction)) 4267 state->pid2sid_done = FALSE; 4268 return (retcode); 4269 } 4270 4271 static 4272 int 4273 copy_mapping_request(idmap_mapping *mapping, idmap_mapping *request) 4274 { 4275 (void) memset(mapping, 0, sizeof (*mapping)); 4276 4277 mapping->flag = request->flag; 4278 mapping->direction = _IDMAP_F_DONE; 4279 mapping->id2.idtype = request->id2.idtype; 4280 4281 mapping->id1.idtype = request->id1.idtype; 4282 if (IS_REQUEST_SID(*request, 1)) { 4283 mapping->id1.idmap_id_u.sid.rid = 4284 request->id1.idmap_id_u.sid.rid; 4285 if (!EMPTY_STRING(request->id1.idmap_id_u.sid.prefix)) { 4286 mapping->id1.idmap_id_u.sid.prefix = 4287 strdup(request->id1.idmap_id_u.sid.prefix); 4288 if (mapping->id1.idmap_id_u.sid.prefix == NULL) 4289 goto errout; 4290 } 4291 } else { 4292 mapping->id1.idmap_id_u.uid = request->id1.idmap_id_u.uid; 4293 } 4294 4295 if (!EMPTY_STRING(request->id1domain)) { 4296 mapping->id1domain = strdup(request->id1domain); 4297 if (mapping->id1domain == NULL) 4298 goto errout; 4299 } 4300 4301 if (!EMPTY_STRING(request->id1name)) { 4302 mapping->id1name = strdup(request->id1name); 4303 if (mapping->id1name == NULL) 4304 goto errout; 4305 } 4306 4307 /* We don't need the rest of the request i.e request->id2 */ 4308 return (0); 4309 4310 errout: 4311 if (mapping->id1.idmap_id_u.sid.prefix != NULL) 4312 free(mapping->id1.idmap_id_u.sid.prefix); 4313 if (mapping->id1domain != NULL) 4314 free(mapping->id1domain); 4315 if (mapping->id1name != NULL) 4316 free(mapping->id1name); 4317 4318 (void) memset(mapping, 0, sizeof (*mapping)); 4319 return (-1); 4320 } 4321 4322 4323 idmap_retcode 4324 get_w2u_mapping(sqlite *cache, sqlite *db, idmap_mapping *request, 4325 idmap_mapping *mapping) 4326 { 4327 idmap_id_res idres; 4328 lookup_state_t state; 4329 char *cp; 4330 idmap_retcode retcode; 4331 const char *winname, *windomain; 4332 4333 (void) memset(&idres, 0, sizeof (idres)); 4334 (void) memset(&state, 0, sizeof (state)); 4335 state.cache = cache; 4336 state.db = db; 4337 4338 /* Get directory-based name mapping info */ 4339 retcode = load_cfg_in_state(&state); 4340 if (retcode != IDMAP_SUCCESS) 4341 goto out; 4342 4343 /* 4344 * Copy data from "request" to "mapping". Note that 4345 * empty strings are not copied from "request" to 4346 * "mapping" and therefore the coresponding strings in 4347 * "mapping" will be NULL. This eliminates having to 4348 * check for empty strings henceforth. 4349 */ 4350 if (copy_mapping_request(mapping, request) < 0) { 4351 retcode = IDMAP_ERR_MEMORY; 4352 goto out; 4353 } 4354 4355 winname = mapping->id1name; 4356 windomain = mapping->id1domain; 4357 4358 if (winname == NULL && windomain != NULL) { 4359 retcode = IDMAP_ERR_ARG; 4360 goto out; 4361 } 4362 4363 /* Need atleast winname or sid to proceed */ 4364 if (winname == NULL && mapping->id1.idmap_id_u.sid.prefix == NULL) { 4365 retcode = IDMAP_ERR_ARG; 4366 goto out; 4367 } 4368 4369 /* 4370 * If domainname is not given but we have a fully qualified 4371 * winname then extract the domainname from the winname, 4372 * otherwise use the default_domain from the config 4373 */ 4374 if (winname != NULL && windomain == NULL) { 4375 retcode = IDMAP_SUCCESS; 4376 if ((cp = strchr(winname, '@')) != NULL) { 4377 *cp = '\0'; 4378 mapping->id1domain = strdup(cp + 1); 4379 if (mapping->id1domain == NULL) 4380 retcode = IDMAP_ERR_MEMORY; 4381 } else if (lookup_wksids_name2sid(winname, NULL, NULL, NULL, 4382 NULL) != IDMAP_SUCCESS) { 4383 if (state.defdom == NULL) { 4384 /* 4385 * We have a non-qualified winname which is 4386 * neither the name of a well-known SID nor 4387 * there is a default domain with which we can 4388 * qualify it. 4389 */ 4390 retcode = IDMAP_ERR_DOMAIN_NOTFOUND; 4391 } else { 4392 mapping->id1domain = strdup(state.defdom); 4393 if (mapping->id1domain == NULL) 4394 retcode = IDMAP_ERR_MEMORY; 4395 } 4396 } 4397 if (retcode != IDMAP_SUCCESS) 4398 goto out; 4399 } 4400 4401 /* 4402 * First pass looks up the well-known SIDs table and cache 4403 * and handles localSIDs 4404 */ 4405 state.sid2pid_done = TRUE; 4406 retcode = sid2pid_first_pass(&state, mapping, &idres); 4407 if (IDMAP_ERROR(retcode) || state.sid2pid_done == TRUE) 4408 goto out; 4409 4410 /* AD lookup */ 4411 if (state.ad_nqueries > 0) { 4412 retcode = ad_lookup_one(&state, mapping, &idres); 4413 if (IDMAP_ERROR(retcode)) 4414 goto out; 4415 } 4416 4417 /* nldap lookup */ 4418 if (state.nldap_nqueries > 0) { 4419 retcode = nldap_lookup_one(&state, mapping, &idres); 4420 if (IDMAP_FATAL_ERROR(retcode)) 4421 goto out; 4422 } 4423 4424 /* Next pass performs name-based mapping and ephemeral mapping. */ 4425 state.sid2pid_done = TRUE; 4426 retcode = sid2pid_second_pass(&state, mapping, &idres); 4427 if (IDMAP_ERROR(retcode) || state.sid2pid_done == TRUE) 4428 goto out; 4429 4430 /* Update cache */ 4431 (void) update_cache_sid2pid(&state, mapping, &idres); 4432 4433 out: 4434 /* 4435 * Note that "mapping" is returned to the client. Therefore 4436 * copy whatever we have in "idres" to mapping->id2 and 4437 * free idres. 4438 */ 4439 mapping->direction = idres.direction; 4440 mapping->id2 = idres.id; 4441 if (mapping->flag & IDMAP_REQ_FLG_MAPPING_INFO || 4442 retcode != IDMAP_SUCCESS) 4443 (void) idmap_info_mov(&mapping->info, &idres.info); 4444 else 4445 idmap_info_free(&idres.info); 4446 (void) memset(&idres, 0, sizeof (idres)); 4447 if (retcode != IDMAP_SUCCESS) 4448 mapping->id2.idmap_id_u.uid = UID_NOBODY; 4449 xdr_free(xdr_idmap_id_res, (caddr_t)&idres); 4450 cleanup_lookup_state(&state); 4451 return (retcode); 4452 } 4453 4454 idmap_retcode 4455 get_u2w_mapping(sqlite *cache, sqlite *db, idmap_mapping *request, 4456 idmap_mapping *mapping, int is_user) 4457 { 4458 idmap_id_res idres; 4459 lookup_state_t state; 4460 idmap_retcode retcode; 4461 4462 /* 4463 * In order to re-use the pid2sid code, we convert 4464 * our input data into structs that are expected by 4465 * pid2sid_first_pass. 4466 */ 4467 4468 (void) memset(&idres, 0, sizeof (idres)); 4469 (void) memset(&state, 0, sizeof (state)); 4470 state.cache = cache; 4471 state.db = db; 4472 4473 /* Get directory-based name mapping info */ 4474 retcode = load_cfg_in_state(&state); 4475 if (retcode != IDMAP_SUCCESS) 4476 goto out; 4477 4478 /* 4479 * Copy data from "request" to "mapping". Note that 4480 * empty strings are not copied from "request" to 4481 * "mapping" and therefore the coresponding strings in 4482 * "mapping" will be NULL. This eliminates having to 4483 * check for empty strings henceforth. 4484 */ 4485 if (copy_mapping_request(mapping, request) < 0) { 4486 retcode = IDMAP_ERR_MEMORY; 4487 goto out; 4488 } 4489 4490 /* 4491 * For unix to windows mapping request, we need atleast a 4492 * unixname or uid/gid to proceed 4493 */ 4494 if (mapping->id1name == NULL && 4495 mapping->id1.idmap_id_u.uid == SENTINEL_PID) { 4496 retcode = IDMAP_ERR_ARG; 4497 goto out; 4498 } 4499 4500 /* First pass looks up cache and well-known SIDs */ 4501 state.pid2sid_done = TRUE; 4502 retcode = pid2sid_first_pass(&state, mapping, &idres, is_user, 1); 4503 if (IDMAP_ERROR(retcode) || state.pid2sid_done == TRUE) 4504 goto out; 4505 4506 /* nldap lookup */ 4507 if (state.nldap_nqueries > 0) { 4508 retcode = nldap_lookup_one(&state, mapping, &idres); 4509 if (IDMAP_FATAL_ERROR(retcode)) 4510 goto out; 4511 } 4512 4513 /* AD lookup */ 4514 if (state.ad_nqueries > 0) { 4515 retcode = ad_lookup_one(&state, mapping, &idres); 4516 if (IDMAP_FATAL_ERROR(retcode)) 4517 goto out; 4518 } 4519 4520 /* 4521 * Next pass processes the result of the preceding passes/lookups. 4522 * It returns if there's nothing more to be done otherwise it 4523 * evaluates local name-based mapping rules 4524 */ 4525 state.pid2sid_done = TRUE; 4526 retcode = pid2sid_second_pass(&state, mapping, &idres, is_user); 4527 if (IDMAP_ERROR(retcode) || state.pid2sid_done == TRUE) 4528 goto out; 4529 4530 /* Update cache */ 4531 (void) update_cache_pid2sid(&state, mapping, &idres); 4532 4533 out: 4534 /* 4535 * Note that "mapping" is returned to the client. Therefore 4536 * copy whatever we have in "idres" to mapping->id2 and 4537 * free idres. 4538 */ 4539 mapping->direction = idres.direction; 4540 mapping->id2 = idres.id; 4541 if (mapping->flag & IDMAP_REQ_FLG_MAPPING_INFO || 4542 retcode != IDMAP_SUCCESS) 4543 (void) idmap_info_mov(&mapping->info, &idres.info); 4544 else 4545 idmap_info_free(&idres.info); 4546 (void) memset(&idres, 0, sizeof (idres)); 4547 xdr_free(xdr_idmap_id_res, (caddr_t)&idres); 4548 cleanup_lookup_state(&state); 4549 return (retcode); 4550 } 4551 4552 /*ARGSUSED*/ 4553 static 4554 idmap_retcode 4555 ad_lookup_one(lookup_state_t *state, idmap_mapping *req, idmap_id_res *res) 4556 { 4557 idmap_mapping_batch batch; 4558 idmap_ids_res result; 4559 4560 batch.idmap_mapping_batch_len = 1; 4561 batch.idmap_mapping_batch_val = req; 4562 result.ids.ids_len = 1; 4563 result.ids.ids_val = res; 4564 return (ad_lookup_batch(state, &batch, &result)); 4565 } 4566