2 Unix SMB/Netbios implementation.
4 Copyright (C) Andrew Tridgell 1992-2001
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 /* the Samba secrets database stores any generated, private information
22 such as the local SID and machine trust password */
26 static TDB_CONTEXT *tdb;
28 /* open up the secrets database */
29 BOOL secrets_init(void)
36 pstrcpy(fname, lp_private_dir());
37 pstrcat(fname,"/secrets.tdb");
39 tdb = tdb_open_log(fname, 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
42 DEBUG(0,("Failed to open %s\n", fname));
48 /* read a entry from the secrets database - the caller must free the result
49 if size is non-null then the size of the entry is put in there
51 void *secrets_fetch(char *key, size_t *size)
58 kbuf.dsize = strlen(key);
59 dbuf = tdb_fetch(tdb, kbuf);
65 /* store a secrets entry
67 BOOL secrets_store(char *key, void *data, size_t size)
74 kbuf.dsize = strlen(key);
77 return tdb_store(tdb, kbuf, dbuf, TDB_REPLACE) == 0;
81 /* delete a secets database entry
83 BOOL secrets_delete(char *key)
90 kbuf.dsize = strlen(key);
91 return tdb_delete(tdb, kbuf) == 0;
94 BOOL secrets_store_domain_sid(char *domain, DOM_SID *sid)
98 slprintf(key, sizeof(key)-1, "%s/%s", SECRETS_DOMAIN_SID, domain);
99 return secrets_store(key, sid, sizeof(DOM_SID));
102 BOOL secrets_fetch_domain_sid(char *domain, DOM_SID *sid)
108 slprintf(key, sizeof(key)-1, "%s/%s", SECRETS_DOMAIN_SID, domain);
109 dyn_sid = (DOM_SID *)secrets_fetch(key, &size);
114 if (size != sizeof(DOM_SID))
126 /************************************************************************
127 form a key for fetching a domain trust password
128 ************************************************************************/
129 char *trust_keystr(char *domain)
131 static fstring keystr;
133 slprintf(keystr,sizeof(keystr)-1,"%s/%s",
134 SECRETS_MACHINE_ACCT_PASS, domain);
139 /************************************************************************
140 Routine to get the trust account password for a domain.
141 ************************************************************************/
142 BOOL secrets_fetch_trust_account_password(char *domain, uint8 ret_pwd[16],
143 time_t *pass_last_set_time)
145 struct machine_acct_pass *pass;
149 plaintext = secrets_fetch_machine_password();
151 /* we have an ADS password - use that */
152 DEBUG(4,("Using ADS machine password\n"));
153 E_md4hash((uchar *)plaintext, ret_pwd);
154 SAFE_FREE(plaintext);
158 if (!(pass = secrets_fetch(trust_keystr(domain), &size))) {
159 DEBUG(5, ("secrets_fetch failed!\n"));
163 if (size != sizeof(*pass)) {
164 DEBUG(0, ("secrets were of incorrect size!\n"));
168 if (pass_last_set_time) *pass_last_set_time = pass->mod_time;
169 memcpy(ret_pwd, pass->hash, 16);
175 /************************************************************************
176 Routine to set the trust account password for a domain.
177 ************************************************************************/
178 BOOL secrets_store_trust_account_password(char *domain, uint8 new_pwd[16])
180 struct machine_acct_pass pass;
182 pass.mod_time = time(NULL);
183 memcpy(pass.hash, new_pwd, 16);
185 return secrets_store(trust_keystr(domain), (void *)&pass, sizeof(pass));
188 /************************************************************************
189 Routine to set the plaintext machine account password for a realm
190 the password is assumed to be a null terminated ascii string
191 ************************************************************************/
192 BOOL secrets_store_machine_password(char *pass)
194 return secrets_store(SECRETS_MACHINE_PASSWORD, pass, strlen(pass)+1);
198 /************************************************************************
199 Routine to fetch the plaintext machine account password for a realm
200 the password is assumed to be a null terminated ascii string
201 ************************************************************************/
202 char *secrets_fetch_machine_password(void)
204 return (char *)secrets_fetch(SECRETS_MACHINE_PASSWORD, NULL);
209 /************************************************************************
210 Routine to delete the trust account password file for a domain.
211 ************************************************************************/
213 BOOL trust_password_delete(char *domain)
215 return secrets_delete(trust_keystr(domain));
218 /*******************************************************************
219 Reset the 'done' variables so after a client process is created
220 from a fork call these calls will be re-done. This should be
221 expanded if more variables need reseting.
222 ******************************************************************/
224 void reset_globals_after_fork(void)
231 * Increment the global seed value to ensure every smbd starts
232 * with a new random seed.
236 uint32 initial_val = sys_getpid();
237 tdb_change_int_atomic(tdb, "INFO/random_seed", (int *)&initial_val, 1);
238 set_rand_reseed_data((unsigned char *)&initial_val, sizeof(initial_val));
242 * Re-seed the random crypto generator, so all smbd's
243 * started from the same parent won't generate the same
246 generate_random_buffer( &dummy, 1, True);