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 "system/filesys.h"
28 #include "../libcli/auth/libcli_auth.h"
29 #include "librpc/gen_ndr/ndr_secrets.h"
32 #include "../libcli/security/security.h"
36 #define DBGC_CLASS DBGC_PASSDB
38 static struct db_context *db_ctx;
41 * Use a TDB to store an incrementing random seed.
43 * Initialised to the current pid, the very first time Samba starts,
44 * and incremented by one each time it is needed.
46 * @note Not called by systems with a working /dev/urandom.
48 static void get_rand_seed(void *userdata, int *new_seed)
50 *new_seed = sys_getpid();
52 dbwrap_trans_change_int32_atomic(db_ctx, "INFO/random_seed",
57 /* open up the secrets database */
58 bool secrets_init(void)
66 fname = talloc_asprintf(talloc_tos(), "%s/secrets.tdb",
72 db_ctx = db_open(NULL, fname, 0,
73 TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
76 DEBUG(0,("Failed to open %s\n", fname));
84 * Set a reseed function for the crypto random generator
86 * This avoids a problem where systems without /dev/urandom
87 * could send the same challenge to multiple clients
89 set_rand_reseed_callback(get_rand_seed, NULL);
91 /* Ensure that the reseed is done now, while we are root, etc */
92 generate_random_buffer(&dummy, sizeof(dummy));
97 struct db_context *secrets_db_ctx(void)
99 if (!secrets_init()) {
109 void secrets_shutdown(void)
114 /* read a entry from the secrets database - the caller must free the result
115 if size is non-null then the size of the entry is put in there
117 void *secrets_fetch(const char *key, size_t *size)
122 if (!secrets_init()) {
126 if (db_ctx->fetch(db_ctx, talloc_tos(), string_tdb_data(key),
131 result = memdup(dbuf.dptr, dbuf.dsize);
132 if (result == NULL) {
135 TALLOC_FREE(dbuf.dptr);
144 /* store a secrets entry
146 bool secrets_store(const char *key, const void *data, size_t size)
150 if (!secrets_init()) {
154 status = dbwrap_trans_store(db_ctx, string_tdb_data(key),
155 make_tdb_data((const uint8 *)data, size),
157 return NT_STATUS_IS_OK(status);
161 /* delete a secets database entry
163 bool secrets_delete(const char *key)
166 if (!secrets_init()) {
170 status = dbwrap_trans_delete(db_ctx, string_tdb_data(key));
172 return NT_STATUS_IS_OK(status);
176 * Form a key for fetching a trusted domain password
178 * @param domain trusted domain name
180 * @return stored password's key
182 static char *trustdom_keystr(const char *domain)
186 keystr = talloc_asprintf_strupper_m(talloc_tos(), "%s/%s",
187 SECRETS_DOMTRUST_ACCT_PASS,
189 SMB_ASSERT(keystr != NULL);
193 /************************************************************************
194 Routine to get account password to trusted domain
195 ************************************************************************/
197 bool secrets_fetch_trusted_domain_password(const char *domain, char** pwd,
198 struct dom_sid *sid, time_t *pass_last_set_time)
200 struct TRUSTED_DOM_PASS pass;
201 enum ndr_err_code ndr_err;
203 /* unpacking structures */
206 /* fetching trusted domain password structure */
207 if (!(blob.data = (uint8_t *)secrets_fetch(trustdom_keystr(domain),
209 DEBUG(5, ("secrets_fetch failed!\n"));
213 /* unpack trusted domain password */
214 ndr_err = ndr_pull_struct_blob(&blob, talloc_tos(), &pass,
215 (ndr_pull_flags_fn_t)ndr_pull_TRUSTED_DOM_PASS);
217 SAFE_FREE(blob.data);
219 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
224 /* the trust's password */
226 *pwd = SMB_STRDUP(pass.pass);
232 /* last change time */
233 if (pass_last_set_time) *pass_last_set_time = pass.mod_time;
236 if (sid != NULL) sid_copy(sid, &pass.domain_sid);
242 * Routine to store the password for trusted domain
244 * @param domain remote domain name
245 * @param pwd plain text password of trust relationship
246 * @param sid remote domain sid
248 * @return true if succeeded
251 bool secrets_store_trusted_domain_password(const char* domain, const char* pwd,
252 const struct dom_sid *sid)
256 /* packing structures */
258 enum ndr_err_code ndr_err;
259 struct TRUSTED_DOM_PASS pass;
262 pass.uni_name = domain;
263 pass.uni_name_len = strlen(domain)+1;
265 /* last change time */
266 pass.mod_time = time(NULL);
268 /* password of the trust */
269 pass.pass_len = strlen(pwd);
273 sid_copy(&pass.domain_sid, sid);
275 ndr_err = ndr_push_struct_blob(&blob, talloc_tos(), &pass,
276 (ndr_push_flags_fn_t)ndr_push_TRUSTED_DOM_PASS);
277 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
281 ret = secrets_store(trustdom_keystr(domain), blob.data, blob.length);
283 data_blob_free(&blob);
288 /************************************************************************
289 Routine to delete the password for trusted domain
290 ************************************************************************/
292 bool trusted_domain_password_delete(const char *domain)
294 return secrets_delete(trustdom_keystr(domain));
297 bool secrets_store_ldap_pw(const char* dn, char* pw)
302 if (asprintf(&key, "%s/%s", SECRETS_LDAP_BIND_PW, dn) < 0) {
303 DEBUG(0, ("secrets_store_ldap_pw: asprintf failed!\n"));
307 ret = secrets_store(key, pw, strlen(pw)+1);
313 /*******************************************************************
314 Find the ldap password.
315 ******************************************************************/
317 bool fetch_ldap_pw(char **dn, char** pw)
322 *dn = smb_xstrdup(lp_ldap_admin_dn());
324 if (asprintf(&key, "%s/%s", SECRETS_LDAP_BIND_PW, *dn) < 0) {
326 DEBUG(0, ("fetch_ldap_pw: asprintf failed!\n"));
330 *pw=(char *)secrets_fetch(key, &size);
334 /* Upgrade 2.2 style entry */
336 char* old_style_key = SMB_STRDUP(*dn);
338 fstring old_style_pw;
340 if (!old_style_key) {
341 DEBUG(0, ("fetch_ldap_pw: strdup failed!\n"));
345 for (p=old_style_key; *p; p++)
346 if (*p == ',') *p = '/';
348 data=(char *)secrets_fetch(old_style_key, &size);
349 if ((data == NULL) || (size < sizeof(old_style_pw))) {
350 DEBUG(0,("fetch_ldap_pw: neither ldap secret retrieved!\n"));
351 SAFE_FREE(old_style_key);
357 size = MIN(size, sizeof(fstring)-1);
358 strncpy(old_style_pw, data, size);
359 old_style_pw[size] = 0;
363 if (!secrets_store_ldap_pw(*dn, old_style_pw)) {
364 DEBUG(0,("fetch_ldap_pw: ldap secret could not be upgraded!\n"));
365 SAFE_FREE(old_style_key);
369 if (!secrets_delete(old_style_key)) {
370 DEBUG(0,("fetch_ldap_pw: old ldap secret could not be deleted!\n"));
373 SAFE_FREE(old_style_key);
375 *pw = smb_xstrdup(old_style_pw);
382 * Get trusted domains info from secrets.tdb.
385 struct list_trusted_domains_state {
387 struct trustdom_info **domains;
390 static int list_trusted_domain(struct db_record *rec, void *private_data)
392 const size_t prefix_len = strlen(SECRETS_DOMTRUST_ACCT_PASS);
393 struct TRUSTED_DOM_PASS pass;
394 enum ndr_err_code ndr_err;
396 struct trustdom_info *dom_info;
398 struct list_trusted_domains_state *state =
399 (struct list_trusted_domains_state *)private_data;
401 if ((rec->key.dsize < prefix_len)
402 || (strncmp((char *)rec->key.dptr, SECRETS_DOMTRUST_ACCT_PASS,
407 blob = data_blob_const(rec->value.dptr, rec->value.dsize);
409 ndr_err = ndr_pull_struct_blob(&blob, talloc_tos(), &pass,
410 (ndr_pull_flags_fn_t)ndr_pull_TRUSTED_DOM_PASS);
411 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
415 if (pass.domain_sid.num_auths != 4) {
416 DEBUG(0, ("SID %s is not a domain sid, has %d "
417 "auths instead of 4\n",
418 sid_string_dbg(&pass.domain_sid),
419 pass.domain_sid.num_auths));
423 if (!(dom_info = TALLOC_P(state->domains, struct trustdom_info))) {
424 DEBUG(0, ("talloc failed\n"));
428 dom_info->name = talloc_strdup(dom_info, pass.uni_name);
429 if (!dom_info->name) {
430 TALLOC_FREE(dom_info);
434 sid_copy(&dom_info->sid, &pass.domain_sid);
436 ADD_TO_ARRAY(state->domains, struct trustdom_info *, dom_info,
437 &state->domains, &state->num_domains);
439 if (state->domains == NULL) {
440 state->num_domains = 0;
446 NTSTATUS secrets_trusted_domains(TALLOC_CTX *mem_ctx, uint32 *num_domains,
447 struct trustdom_info ***domains)
449 struct list_trusted_domains_state state;
451 if (!secrets_init()) {
452 return NT_STATUS_ACCESS_DENIED;
455 state.num_domains = 0;
458 * Make sure that a talloc context for the trustdom_info structs
462 if (!(state.domains = talloc_array(
463 mem_ctx, struct trustdom_info *, 1))) {
464 return NT_STATUS_NO_MEMORY;
467 db_ctx->traverse_read(db_ctx, list_trusted_domain, (void *)&state);
469 *num_domains = state.num_domains;
470 *domains = state.domains;
474 /*******************************************************************************
475 Store a complete AFS keyfile into secrets.tdb.
476 *******************************************************************************/
478 bool secrets_store_afs_keyfile(const char *cell, const struct afs_keyfile *keyfile)
482 if ((cell == NULL) || (keyfile == NULL))
485 if (ntohl(keyfile->nkeys) > SECRETS_AFS_MAXKEYS)
488 slprintf(key, sizeof(key)-1, "%s/%s", SECRETS_AFS_KEYFILE, cell);
489 return secrets_store(key, keyfile, sizeof(struct afs_keyfile));
492 /*******************************************************************************
493 Fetch the current (highest) AFS key from secrets.tdb
494 *******************************************************************************/
495 bool secrets_fetch_afs_key(const char *cell, struct afs_key *result)
498 struct afs_keyfile *keyfile;
502 slprintf(key, sizeof(key)-1, "%s/%s", SECRETS_AFS_KEYFILE, cell);
504 keyfile = (struct afs_keyfile *)secrets_fetch(key, &size);
509 if (size != sizeof(struct afs_keyfile)) {
514 i = ntohl(keyfile->nkeys);
516 if (i > SECRETS_AFS_MAXKEYS) {
521 *result = keyfile->entry[i-1];
523 result->kvno = ntohl(result->kvno);
530 /******************************************************************************
531 When kerberos is not available, choose between anonymous or
532 authenticated connections.
534 We need to use an authenticated connection if DCs have the
535 RestrictAnonymous registry entry set > 0, or the "Additional
536 restrictions for anonymous connections" set in the win2k Local
539 Caller to free() result in domain, username, password
540 *******************************************************************************/
541 void secrets_fetch_ipc_userpass(char **username, char **domain, char **password)
543 *username = (char *)secrets_fetch(SECRETS_AUTH_USER, NULL);
544 *domain = (char *)secrets_fetch(SECRETS_AUTH_DOMAIN, NULL);
545 *password = (char *)secrets_fetch(SECRETS_AUTH_PASSWORD, NULL);
547 if (*username && **username) {
549 if (!*domain || !**domain)
550 *domain = smb_xstrdup(lp_workgroup());
552 if (!*password || !**password)
553 *password = smb_xstrdup("");
555 DEBUG(3, ("IPC$ connections done by user %s\\%s\n",
556 *domain, *username));
559 DEBUG(3, ("IPC$ connections done anonymously\n"));
560 *username = smb_xstrdup("");
561 *domain = smb_xstrdup("");
562 *password = smb_xstrdup("");
566 bool secrets_store_generic(const char *owner, const char *key, const char *secret)
571 if (asprintf(&tdbkey, "SECRETS/GENERIC/%s/%s", owner, key) < 0) {
572 DEBUG(0, ("asprintf failed!\n"));
576 ret = secrets_store(tdbkey, secret, strlen(secret)+1);
582 bool secrets_delete_generic(const char *owner, const char *key)
587 if (asprintf(&tdbkey, "SECRETS/GENERIC/%s/%s", owner, key) < 0) {
588 DEBUG(0, ("asprintf failed!\n"));
592 ret = secrets_delete(tdbkey);
598 /*******************************************************************
599 Find the ldap password.
600 ******************************************************************/
602 char *secrets_fetch_generic(const char *owner, const char *key)
607 if (( ! owner) || ( ! key)) {
608 DEBUG(1, ("Invalid Parameters"));
612 if (asprintf(&tdbkey, "SECRETS/GENERIC/%s/%s", owner, key) < 0) {
613 DEBUG(0, ("Out of memory!\n"));
617 secret = (char *)secrets_fetch(tdbkey, NULL);