2 Unix SMB/CIFS implementation.
3 Copyright (C) Andrew Tridgell 1992-2001
4 Copyright (C) Andrew Bartlett 2002
5 Copyright (C) Rafal Szczesniak 2002
6 Copyright (C) Tim Potter 2001
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 /* the Samba secrets database stores any generated, private information
23 such as the local SID and machine trust password */
26 #include "../libcli/auth/libcli_auth.h"
27 #include "librpc/gen_ndr/ndr_secrets.h"
30 #include "../libcli/security/security.h"
33 #define DBGC_CLASS DBGC_PASSDB
35 static struct db_context *db_ctx;
38 * Use a TDB to store an incrementing random seed.
40 * Initialised to the current pid, the very first time Samba starts,
41 * and incremented by one each time it is needed.
43 * @note Not called by systems with a working /dev/urandom.
45 static void get_rand_seed(void *userdata, int *new_seed)
47 *new_seed = sys_getpid();
49 dbwrap_trans_change_int32_atomic(db_ctx, "INFO/random_seed",
54 /* open up the secrets database */
55 bool secrets_init(void)
63 fname = talloc_asprintf(talloc_tos(), "%s/secrets.tdb",
69 db_ctx = db_open(NULL, fname, 0,
70 TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
73 DEBUG(0,("Failed to open %s\n", fname));
81 * Set a reseed function for the crypto random generator
83 * This avoids a problem where systems without /dev/urandom
84 * could send the same challenge to multiple clients
86 set_rand_reseed_callback(get_rand_seed, NULL);
88 /* Ensure that the reseed is done now, while we are root, etc */
89 generate_random_buffer(&dummy, sizeof(dummy));
94 struct db_context *secrets_db_ctx(void)
96 if (!secrets_init()) {
106 void secrets_shutdown(void)
111 /* read a entry from the secrets database - the caller must free the result
112 if size is non-null then the size of the entry is put in there
114 void *secrets_fetch(const char *key, size_t *size)
119 if (!secrets_init()) {
123 if (db_ctx->fetch(db_ctx, talloc_tos(), string_tdb_data(key),
128 result = memdup(dbuf.dptr, dbuf.dsize);
129 if (result == NULL) {
132 TALLOC_FREE(dbuf.dptr);
141 /* store a secrets entry
143 bool secrets_store(const char *key, const void *data, size_t size)
147 if (!secrets_init()) {
151 status = dbwrap_trans_store(db_ctx, string_tdb_data(key),
152 make_tdb_data((const uint8 *)data, size),
154 return NT_STATUS_IS_OK(status);
158 /* delete a secets database entry
160 bool secrets_delete(const char *key)
163 if (!secrets_init()) {
167 status = dbwrap_trans_delete(db_ctx, string_tdb_data(key));
169 return NT_STATUS_IS_OK(status);
173 * Form a key for fetching a trusted domain password
175 * @param domain trusted domain name
177 * @return stored password's key
179 static char *trustdom_keystr(const char *domain)
183 keystr = talloc_asprintf_strupper_m(talloc_tos(), "%s/%s",
184 SECRETS_DOMTRUST_ACCT_PASS,
186 SMB_ASSERT(keystr != NULL);
190 /************************************************************************
191 Routine to get account password to trusted domain
192 ************************************************************************/
194 bool secrets_fetch_trusted_domain_password(const char *domain, char** pwd,
195 struct dom_sid *sid, time_t *pass_last_set_time)
197 struct TRUSTED_DOM_PASS pass;
198 enum ndr_err_code ndr_err;
200 /* unpacking structures */
203 /* fetching trusted domain password structure */
204 if (!(blob.data = (uint8_t *)secrets_fetch(trustdom_keystr(domain),
206 DEBUG(5, ("secrets_fetch failed!\n"));
210 /* unpack trusted domain password */
211 ndr_err = ndr_pull_struct_blob(&blob, talloc_tos(), &pass,
212 (ndr_pull_flags_fn_t)ndr_pull_TRUSTED_DOM_PASS);
214 SAFE_FREE(blob.data);
216 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
221 /* the trust's password */
223 *pwd = SMB_STRDUP(pass.pass);
229 /* last change time */
230 if (pass_last_set_time) *pass_last_set_time = pass.mod_time;
233 if (sid != NULL) sid_copy(sid, &pass.domain_sid);
239 * Routine to store the password for trusted domain
241 * @param domain remote domain name
242 * @param pwd plain text password of trust relationship
243 * @param sid remote domain sid
245 * @return true if succeeded
248 bool secrets_store_trusted_domain_password(const char* domain, const char* pwd,
249 const struct dom_sid *sid)
253 /* packing structures */
255 enum ndr_err_code ndr_err;
256 struct TRUSTED_DOM_PASS pass;
259 pass.uni_name = domain;
260 pass.uni_name_len = strlen(domain)+1;
262 /* last change time */
263 pass.mod_time = time(NULL);
265 /* password of the trust */
266 pass.pass_len = strlen(pwd);
270 sid_copy(&pass.domain_sid, sid);
272 ndr_err = ndr_push_struct_blob(&blob, talloc_tos(), &pass,
273 (ndr_push_flags_fn_t)ndr_push_TRUSTED_DOM_PASS);
274 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
278 ret = secrets_store(trustdom_keystr(domain), blob.data, blob.length);
280 data_blob_free(&blob);
285 /************************************************************************
286 Routine to delete the password for trusted domain
287 ************************************************************************/
289 bool trusted_domain_password_delete(const char *domain)
291 return secrets_delete(trustdom_keystr(domain));
294 bool secrets_store_ldap_pw(const char* dn, char* pw)
299 if (asprintf(&key, "%s/%s", SECRETS_LDAP_BIND_PW, dn) < 0) {
300 DEBUG(0, ("secrets_store_ldap_pw: asprintf failed!\n"));
304 ret = secrets_store(key, pw, strlen(pw)+1);
310 /*******************************************************************
311 Find the ldap password.
312 ******************************************************************/
314 bool fetch_ldap_pw(char **dn, char** pw)
319 *dn = smb_xstrdup(lp_ldap_admin_dn());
321 if (asprintf(&key, "%s/%s", SECRETS_LDAP_BIND_PW, *dn) < 0) {
323 DEBUG(0, ("fetch_ldap_pw: asprintf failed!\n"));
327 *pw=(char *)secrets_fetch(key, &size);
331 /* Upgrade 2.2 style entry */
333 char* old_style_key = SMB_STRDUP(*dn);
335 fstring old_style_pw;
337 if (!old_style_key) {
338 DEBUG(0, ("fetch_ldap_pw: strdup failed!\n"));
342 for (p=old_style_key; *p; p++)
343 if (*p == ',') *p = '/';
345 data=(char *)secrets_fetch(old_style_key, &size);
346 if ((data == NULL) || (size < sizeof(old_style_pw))) {
347 DEBUG(0,("fetch_ldap_pw: neither ldap secret retrieved!\n"));
348 SAFE_FREE(old_style_key);
354 size = MIN(size, sizeof(fstring)-1);
355 strncpy(old_style_pw, data, size);
356 old_style_pw[size] = 0;
360 if (!secrets_store_ldap_pw(*dn, old_style_pw)) {
361 DEBUG(0,("fetch_ldap_pw: ldap secret could not be upgraded!\n"));
362 SAFE_FREE(old_style_key);
366 if (!secrets_delete(old_style_key)) {
367 DEBUG(0,("fetch_ldap_pw: old ldap secret could not be deleted!\n"));
370 SAFE_FREE(old_style_key);
372 *pw = smb_xstrdup(old_style_pw);
379 * Get trusted domains info from secrets.tdb.
382 struct list_trusted_domains_state {
384 struct trustdom_info **domains;
387 static int list_trusted_domain(struct db_record *rec, void *private_data)
389 const size_t prefix_len = strlen(SECRETS_DOMTRUST_ACCT_PASS);
390 struct TRUSTED_DOM_PASS pass;
391 enum ndr_err_code ndr_err;
393 struct trustdom_info *dom_info;
395 struct list_trusted_domains_state *state =
396 (struct list_trusted_domains_state *)private_data;
398 if ((rec->key.dsize < prefix_len)
399 || (strncmp((char *)rec->key.dptr, SECRETS_DOMTRUST_ACCT_PASS,
404 blob = data_blob_const(rec->value.dptr, rec->value.dsize);
406 ndr_err = ndr_pull_struct_blob(&blob, talloc_tos(), &pass,
407 (ndr_pull_flags_fn_t)ndr_pull_TRUSTED_DOM_PASS);
408 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
412 if (pass.domain_sid.num_auths != 4) {
413 DEBUG(0, ("SID %s is not a domain sid, has %d "
414 "auths instead of 4\n",
415 sid_string_dbg(&pass.domain_sid),
416 pass.domain_sid.num_auths));
420 if (!(dom_info = TALLOC_P(state->domains, struct trustdom_info))) {
421 DEBUG(0, ("talloc failed\n"));
425 dom_info->name = talloc_strdup(dom_info, pass.uni_name);
426 if (!dom_info->name) {
427 TALLOC_FREE(dom_info);
431 sid_copy(&dom_info->sid, &pass.domain_sid);
433 ADD_TO_ARRAY(state->domains, struct trustdom_info *, dom_info,
434 &state->domains, &state->num_domains);
436 if (state->domains == NULL) {
437 state->num_domains = 0;
443 NTSTATUS secrets_trusted_domains(TALLOC_CTX *mem_ctx, uint32 *num_domains,
444 struct trustdom_info ***domains)
446 struct list_trusted_domains_state state;
448 if (!secrets_init()) {
449 return NT_STATUS_ACCESS_DENIED;
452 state.num_domains = 0;
455 * Make sure that a talloc context for the trustdom_info structs
459 if (!(state.domains = TALLOC_ARRAY(
460 mem_ctx, struct trustdom_info *, 1))) {
461 return NT_STATUS_NO_MEMORY;
464 db_ctx->traverse_read(db_ctx, list_trusted_domain, (void *)&state);
466 *num_domains = state.num_domains;
467 *domains = state.domains;
471 /*******************************************************************************
472 Store a complete AFS keyfile into secrets.tdb.
473 *******************************************************************************/
475 bool secrets_store_afs_keyfile(const char *cell, const struct afs_keyfile *keyfile)
479 if ((cell == NULL) || (keyfile == NULL))
482 if (ntohl(keyfile->nkeys) > SECRETS_AFS_MAXKEYS)
485 slprintf(key, sizeof(key)-1, "%s/%s", SECRETS_AFS_KEYFILE, cell);
486 return secrets_store(key, keyfile, sizeof(struct afs_keyfile));
489 /*******************************************************************************
490 Fetch the current (highest) AFS key from secrets.tdb
491 *******************************************************************************/
492 bool secrets_fetch_afs_key(const char *cell, struct afs_key *result)
495 struct afs_keyfile *keyfile;
499 slprintf(key, sizeof(key)-1, "%s/%s", SECRETS_AFS_KEYFILE, cell);
501 keyfile = (struct afs_keyfile *)secrets_fetch(key, &size);
506 if (size != sizeof(struct afs_keyfile)) {
511 i = ntohl(keyfile->nkeys);
513 if (i > SECRETS_AFS_MAXKEYS) {
518 *result = keyfile->entry[i-1];
520 result->kvno = ntohl(result->kvno);
527 /******************************************************************************
528 When kerberos is not available, choose between anonymous or
529 authenticated connections.
531 We need to use an authenticated connection if DCs have the
532 RestrictAnonymous registry entry set > 0, or the "Additional
533 restrictions for anonymous connections" set in the win2k Local
536 Caller to free() result in domain, username, password
537 *******************************************************************************/
538 void secrets_fetch_ipc_userpass(char **username, char **domain, char **password)
540 *username = (char *)secrets_fetch(SECRETS_AUTH_USER, NULL);
541 *domain = (char *)secrets_fetch(SECRETS_AUTH_DOMAIN, NULL);
542 *password = (char *)secrets_fetch(SECRETS_AUTH_PASSWORD, NULL);
544 if (*username && **username) {
546 if (!*domain || !**domain)
547 *domain = smb_xstrdup(lp_workgroup());
549 if (!*password || !**password)
550 *password = smb_xstrdup("");
552 DEBUG(3, ("IPC$ connections done by user %s\\%s\n",
553 *domain, *username));
556 DEBUG(3, ("IPC$ connections done anonymously\n"));
557 *username = smb_xstrdup("");
558 *domain = smb_xstrdup("");
559 *password = smb_xstrdup("");
563 bool secrets_store_generic(const char *owner, const char *key, const char *secret)
568 if (asprintf(&tdbkey, "SECRETS/GENERIC/%s/%s", owner, key) < 0) {
569 DEBUG(0, ("asprintf failed!\n"));
573 ret = secrets_store(tdbkey, secret, strlen(secret)+1);
579 bool secrets_delete_generic(const char *owner, const char *key)
584 if (asprintf(&tdbkey, "SECRETS/GENERIC/%s/%s", owner, key) < 0) {
585 DEBUG(0, ("asprintf failed!\n"));
589 ret = secrets_delete(tdbkey);
595 /*******************************************************************
596 Find the ldap password.
597 ******************************************************************/
599 char *secrets_fetch_generic(const char *owner, const char *key)
604 if (( ! owner) || ( ! key)) {
605 DEBUG(1, ("Invalid Parameters"));
609 if (asprintf(&tdbkey, "SECRETS/GENERIC/%s/%s", owner, key) < 0) {
610 DEBUG(0, ("Out of memory!\n"));
614 secret = (char *)secrets_fetch(tdbkey, NULL);