2 Unix SMB/CIFS implementation.
3 Copyright (C) Andrew Tridgell 1992-2001
4 Copyright (C) Andrew Bartlett 2002
5 Copyright (C) Rafal Szczesniak 2002
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 /* the Samba secrets database stores any generated, private information
23 such as the local SID and machine trust password */
28 #define DBGC_CLASS DBGC_PASSDB
30 static TDB_CONTEXT *tdb;
32 /* open up the secrets database */
33 BOOL secrets_init(void)
40 pstrcpy(fname, lp_private_dir());
41 pstrcat(fname,"/secrets.tdb");
43 tdb = tdb_open_log(fname, 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
46 DEBUG(0,("Failed to open %s\n", fname));
52 /* read a entry from the secrets database - the caller must free the result
53 if size is non-null then the size of the entry is put in there
55 void *secrets_fetch(const char *key, size_t *size)
62 kbuf.dsize = strlen(key);
63 dbuf = tdb_fetch(tdb, kbuf);
69 /* store a secrets entry
71 BOOL secrets_store(const char *key, const void *data, size_t size)
78 kbuf.dsize = strlen(key);
81 return tdb_store(tdb, kbuf, dbuf, TDB_REPLACE) == 0;
85 /* delete a secets database entry
87 BOOL secrets_delete(const char *key)
94 kbuf.dsize = strlen(key);
95 return tdb_delete(tdb, kbuf) == 0;
98 BOOL secrets_store_domain_sid(const char *domain, const DOM_SID *sid)
102 slprintf(key, sizeof(key)-1, "%s/%s", SECRETS_DOMAIN_SID, domain);
104 return secrets_store(key, sid, sizeof(DOM_SID));
107 BOOL secrets_fetch_domain_sid(const char *domain, DOM_SID *sid)
113 slprintf(key, sizeof(key)-1, "%s/%s", SECRETS_DOMAIN_SID, domain);
115 dyn_sid = (DOM_SID *)secrets_fetch(key, &size);
120 if (size != sizeof(DOM_SID))
131 BOOL secrets_store_domain_guid(const char *domain, GUID *guid)
135 slprintf(key, sizeof(key)-1, "%s/%s", SECRETS_DOMAIN_GUID, domain);
137 return secrets_store(key, guid, sizeof(GUID));
140 BOOL secrets_fetch_domain_guid(const char *domain, GUID *guid)
147 slprintf(key, sizeof(key)-1, "%s/%s", SECRETS_DOMAIN_GUID, domain);
149 dyn_guid = (GUID *)secrets_fetch(key, &size);
151 DEBUG(6,("key is %s, size is %d\n", key, (int)size));
153 if ((NULL == dyn_guid) && (ROLE_DOMAIN_PDC == lp_server_role())) {
154 uuid_generate_random(&new_guid);
155 if (!secrets_store_domain_guid(domain, &new_guid))
157 dyn_guid = (GUID *)secrets_fetch(key, &size);
158 if (dyn_guid == NULL)
162 if (size != sizeof(GUID))
174 * Form a key for fetching the machine trust account password
176 * @param domain domain name
178 * @return stored password's key
180 const char *trust_keystr(const char *domain)
182 static fstring keystr;
184 slprintf(keystr,sizeof(keystr)-1,"%s/%s",
185 SECRETS_MACHINE_ACCT_PASS, domain);
192 * Form a key for fetching a trusted domain password
194 * @param domain trusted domain name
196 * @return stored password's key
198 char *trustdom_keystr(const char *domain)
202 asprintf(&keystr, "%s/%s", SECRETS_DOMTRUST_ACCT_PASS, domain);
208 /************************************************************************
209 Lock the trust password entry.
210 ************************************************************************/
212 BOOL secrets_lock_trust_account_password(const char *domain, BOOL dolock)
218 return (tdb_lock_bystring(tdb, trust_keystr(domain),0) == 0);
220 tdb_unlock_bystring(tdb, trust_keystr(domain));
224 /************************************************************************
225 Routine to get the trust account password for a domain.
226 The user of this function must have locked the trust password file using
228 ************************************************************************/
230 BOOL secrets_fetch_trust_account_password(const char *domain, uint8 ret_pwd[16],
231 time_t *pass_last_set_time)
233 struct machine_acct_pass *pass;
237 plaintext = secrets_fetch_machine_password();
239 /* we have an ADS password - use that */
240 DEBUG(4,("Using ADS machine password\n"));
241 E_md4hash(plaintext, ret_pwd);
242 SAFE_FREE(plaintext);
246 if (!(pass = secrets_fetch(trust_keystr(domain), &size))) {
247 DEBUG(5, ("secrets_fetch failed!\n"));
251 if (size != sizeof(*pass)) {
252 DEBUG(0, ("secrets were of incorrect size!\n"));
256 if (pass_last_set_time) *pass_last_set_time = pass->mod_time;
257 memcpy(ret_pwd, pass->hash, 16);
262 /************************************************************************
263 Routine to get account password to trusted domain
264 ************************************************************************/
266 BOOL secrets_fetch_trusted_domain_password(const char *domain, char** pwd,
267 DOM_SID *sid, time_t *pass_last_set_time)
269 struct trusted_dom_pass *pass;
272 /* fetching trusted domain password structure */
273 if (!(pass = secrets_fetch(trustdom_keystr(domain), &size))) {
274 DEBUG(5, ("secrets_fetch failed!\n"));
278 if (size != sizeof(*pass)) {
279 DEBUG(0, ("secrets were of incorrect size!\n"));
283 /* the trust's password */
285 *pwd = strdup(pass->pass);
291 /* last change time */
292 if (pass_last_set_time) *pass_last_set_time = pass->mod_time;
295 memcpy(&sid, &(pass->domain_sid), sizeof(sid));
302 /************************************************************************
303 Routine to set the trust account password for a domain.
304 ************************************************************************/
306 BOOL secrets_store_trust_account_password(const char *domain, uint8 new_pwd[16])
308 struct machine_acct_pass pass;
310 pass.mod_time = time(NULL);
311 memcpy(pass.hash, new_pwd, 16);
313 return secrets_store(trust_keystr(domain), (void *)&pass, sizeof(pass));
317 * Routine to set the password for trusted domain
319 * @param domain remote domain name
320 * @param pwd plain text password of trust relationship
321 * @param sid remote domain sid
323 * @return true if succeeded
326 BOOL secrets_store_trusted_domain_password(const char* domain, smb_ucs2_t *uni_dom_name,
327 size_t uni_name_len, char* pwd,
330 struct trusted_dom_pass pass;
333 /* unicode domain name and its length */
337 strncpy_w(pass.uni_name, uni_dom_name, sizeof(pass.uni_name) - 1);
338 pass.uni_name_len = uni_name_len;
340 /* last change time */
341 pass.mod_time = time(NULL);
343 /* password of the trust */
344 pass.pass_len = strlen(pwd);
345 fstrcpy(pass.pass, pwd);
348 memcpy(&(pass.domain_sid), &sid, sizeof(sid));
350 return secrets_store(trustdom_keystr(domain), (void *)&pass, sizeof(pass));
353 /************************************************************************
354 Routine to set the plaintext machine account password for a realm
355 the password is assumed to be a null terminated ascii string
356 ************************************************************************/
358 BOOL secrets_store_machine_password(const char *pass)
362 asprintf(&key, "%s/%s", SECRETS_MACHINE_PASSWORD, lp_workgroup());
364 ret = secrets_store(key, pass, strlen(pass)+1);
370 /************************************************************************
371 Routine to fetch the plaintext machine account password for a realm
372 the password is assumed to be a null terminated ascii string
373 ************************************************************************/
374 char *secrets_fetch_machine_password(void)
378 asprintf(&key, "%s/%s", SECRETS_MACHINE_PASSWORD, lp_workgroup());
380 ret = (char *)secrets_fetch(key, NULL);
387 /************************************************************************
388 Routine to delete the machine trust account password file for a domain.
389 ************************************************************************/
391 BOOL trust_password_delete(const char *domain)
393 return secrets_delete(trust_keystr(domain));
396 /************************************************************************
397 Routine to delete the password for trusted domain
398 ************************************************************************/
400 BOOL trusted_domain_password_delete(const char *domain)
402 return secrets_delete(trustdom_keystr(domain));
406 /*******************************************************************
407 Reset the 'done' variables so after a client process is created
408 from a fork call these calls will be re-done. This should be
409 expanded if more variables need reseting.
410 ******************************************************************/
412 void reset_globals_after_fork(void)
419 * Increment the global seed value to ensure every smbd starts
420 * with a new random seed.
424 uint32 initial_val = sys_getpid();
425 tdb_change_int32_atomic(tdb, "INFO/random_seed", (int *)&initial_val, 1);
426 set_rand_reseed_data((unsigned char *)&initial_val, sizeof(initial_val));
430 * Re-seed the random crypto generator, so all smbd's
431 * started from the same parent won't generate the same
434 generate_random_buffer( &dummy, 1, True);
437 BOOL secrets_store_ldap_pw(const char* dn, char* pw)
442 if (asprintf(&key, "%s/%s", SECRETS_LDAP_BIND_PW, dn) < 0) {
443 DEBUG(0, ("secrets_store_ldap_pw: asprintf failed!\n"));
447 ret = secrets_store(key, pw, strlen(pw)+1);
455 * Get trusted domains info from secrets.tdb.
457 * The linked list is allocated on the supplied talloc context, caller gets to destroy
460 * @param ctx Allocation context
461 * @param enum_ctx Starting index, eg. we can start fetching at third
462 * or sixth trusted domain entry. Zero is the first index.
463 * Value it is set to is the enum context for the next enumeration.
464 * @param num_domains Number of domain entries to fetch at one call
465 * @param domains Pointer to array of trusted domain structs to be filled up
467 * @return nt status code of rpc response
470 NTSTATUS secrets_get_trusted_domains(TALLOC_CTX* ctx, int* enum_ctx, int max_num_domains, int *num_domains, TRUSTDOM ***domains)
472 TDB_LIST_NODE *keys, *k;
473 TRUSTDOM *dom = NULL;
479 struct trusted_dom_pass *pass;
482 if (!secrets_init()) return NT_STATUS_ACCESS_DENIED;
485 start_idx = *enum_ctx;
487 /* generate searching pattern */
488 if (!(pattern = talloc_asprintf(ctx, "%s/*", SECRETS_DOMTRUST_ACCT_PASS))) {
489 DEBUG(0, ("secrets_get_trusted_domains: talloc_asprintf() failed!\n"));
490 return NT_STATUS_NO_MEMORY;
493 DEBUG(5, ("secrets_get_trusted_domains: looking for %d domains, starting at index %d\n",
494 max_num_domains, *enum_ctx));
496 *domains = talloc_zero(ctx, sizeof(**domains)*max_num_domains);
498 /* fetching trusted domains' data and collecting them in a list */
499 keys = tdb_search_keys(tdb, pattern);
502 * if there's no keys returned ie. no trusted domain,
503 * return "no more entries" code
505 status = NT_STATUS_NO_MORE_ENTRIES;
507 /* searching for keys in sectrets db -- way to go ... */
508 for (k = keys; k; k = k->next) {
511 /* important: ensure null-termination of the key string */
512 secrets_key = strndup(k->node_key.dptr, k->node_key.dsize);
514 DEBUG(0, ("strndup failed!\n"));
515 return NT_STATUS_NO_MEMORY;
518 pass = secrets_fetch(secrets_key, &size);
520 if (size != sizeof(*pass)) {
521 DEBUG(2, ("Secrets record %s is invalid!\n", secrets_key));
526 pull_ucs2_fstring(dom_name, pass->uni_name);
527 DEBUG(18, ("Fetched secret record num %d.\nDomain name: %s, SID: %s\n",
528 idx, dom_name, sid_string_static(&pass->domain_sid)));
530 SAFE_FREE(secrets_key);
532 if (idx >= start_idx && idx < start_idx + max_num_domains) {
533 dom = talloc_zero(ctx, sizeof(*dom));
535 /* free returned tdb record */
538 return NT_STATUS_NO_MEMORY;
541 /* copy domain sid */
542 SMB_ASSERT(sizeof(dom->sid) == sizeof(pass->domain_sid));
543 memcpy(&(dom->sid), &(pass->domain_sid), sizeof(dom->sid));
545 /* copy unicode domain name */
546 dom->name = talloc_strdup_w(ctx, pass->uni_name);
548 (*domains)[idx - start_idx] = dom;
550 DEBUG(18, ("Secret record is in required range.\n \
551 start_idx = %d, max_num_domains = %d. Added to returned array.\n",
552 start_idx, max_num_domains));
557 /* set proper status code to return */
559 /* there are yet some entries to enumerate */
560 status = STATUS_MORE_ENTRIES;
562 /* this is the last entry in the whole enumeration */
563 status = NT_STATUS_OK;
566 DEBUG(18, ("Secret is outside the required range.\n \
567 start_idx = %d, max_num_domains = %d. Not added to returned array\n",
568 start_idx, max_num_domains));
573 /* free returned tdb record */
577 DEBUG(5, ("secrets_get_trusted_domains: got %d domains\n", *num_domains));
579 /* free the results of searching the keys */
580 tdb_search_list_free(keys);
585 /*******************************************************************************
586 Lock the secrets tdb based on a string - this is used as a primitive form of mutex
587 between smbd instances.
588 *******************************************************************************/
590 BOOL secrets_named_mutex(const char *name, unsigned int timeout)
597 ret = tdb_lock_bystring(tdb, name, timeout);
599 DEBUG(10,("secrets_named_mutex: got mutex for %s\n", name ));
604 /*******************************************************************************
605 Unlock a named mutex.
606 *******************************************************************************/
608 void secrets_named_mutex_release(const char *name)
610 tdb_unlock_bystring(tdb, name);
611 DEBUG(10,("secrets_named_mutex: released mutex for %s\n", name ));