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)
57 kbuf.dsize = strlen(key);
58 dbuf = tdb_fetch(tdb, kbuf);
64 /* store a secrets entry
66 BOOL secrets_store(char *key, void *data, size_t size)
72 kbuf.dsize = strlen(key);
75 return tdb_store(tdb, kbuf, dbuf, TDB_REPLACE) == 0;
79 /* delete a secets database entry
81 BOOL secrets_delete(char *key)
87 kbuf.dsize = strlen(key);
88 return tdb_delete(tdb, kbuf) == 0;
91 BOOL secrets_store_domain_sid(char *domain, DOM_SID *sid)
95 slprintf(key, sizeof(key)-1, "%s/%s", SECRETS_DOMAIN_SID, domain);
96 return secrets_store(key, sid, sizeof(DOM_SID));
99 BOOL secrets_fetch_domain_sid(char *domain, DOM_SID *sid)
105 slprintf(key, sizeof(key)-1, "%s/%s", SECRETS_DOMAIN_SID, domain);
106 dyn_sid = (DOM_SID *)secrets_fetch(key, &size);
111 if (size != sizeof(DOM_SID))
123 /************************************************************************
124 form a key for fetching a domain trust password
125 ************************************************************************/
126 char *trust_keystr(char *domain)
128 static fstring keystr;
130 slprintf(keystr,sizeof(keystr)-1,"%s/%s",
131 SECRETS_MACHINE_ACCT_PASS, domain);
136 /************************************************************************
137 Routine to get the trust account password for a domain.
138 ************************************************************************/
139 BOOL secrets_fetch_trust_account_password(char *domain, uint8 ret_pwd[16],
140 time_t *pass_last_set_time)
142 struct machine_acct_pass *pass;
146 plaintext = secrets_fetch_machine_password();
148 /* we have an ADS password - use that */
149 DEBUG(4,("Using ADS machine password\n"));
150 E_md4hash((uchar *)plaintext, ret_pwd);
151 SAFE_FREE(plaintext);
155 if (!(pass = secrets_fetch(trust_keystr(domain), &size)) ||
156 size != sizeof(*pass))
159 if (pass_last_set_time) *pass_last_set_time = pass->mod_time;
160 memcpy(ret_pwd, pass->hash, 16);
166 /************************************************************************
167 Routine to set the trust account password for a domain.
168 ************************************************************************/
169 BOOL secrets_store_trust_account_password(char *domain, uint8 new_pwd[16])
171 struct machine_acct_pass pass;
173 pass.mod_time = time(NULL);
174 memcpy(pass.hash, new_pwd, 16);
176 return secrets_store(trust_keystr(domain), (void *)&pass, sizeof(pass));
179 /************************************************************************
180 Routine to set the plaintext machine account password for a realm
181 the password is assumed to be a null terminated ascii string
182 ************************************************************************/
183 BOOL secrets_store_machine_password(char *pass)
185 return secrets_store(SECRETS_MACHINE_PASSWORD, pass, strlen(pass)+1);
189 /************************************************************************
190 Routine to fetch the plaintext machine account password for a realm
191 the password is assumed to be a null terminated ascii string
192 ************************************************************************/
193 char *secrets_fetch_machine_password(void)
195 return (char *)secrets_fetch(SECRETS_MACHINE_PASSWORD, NULL);
200 /************************************************************************
201 Routine to delete the trust account password file for a domain.
202 ************************************************************************/
204 BOOL trust_password_delete(char *domain)
206 return secrets_delete(trust_keystr(domain));
209 /*******************************************************************
210 Reset the 'done' variables so after a client process is created
211 from a fork call these calls will be re-done. This should be
212 expanded if more variables need reseting.
213 ******************************************************************/
215 void reset_globals_after_fork(void)
220 * Increment the global seed value to ensure every smbd starts
221 * with a new random seed.
225 uint32 initial_val = sys_getpid();
226 tdb_change_int_atomic(tdb, "INFO/random_seed", (int *)&initial_val, 1);
227 set_rand_reseed_data((unsigned char *)&initial_val, sizeof(initial_val));
231 * Re-seed the random crypto generator, so all smbd's
232 * started from the same parent won't generate the same
235 generate_random_buffer( &dummy, 1, True);