2 Unix SMB/Netbios implementation.
4 Samba registry functions
5 Copyright (C) Andrew Tridgell 1992-1998
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 */
27 static TDB_CONTEXT *tdb;
29 /* open up the secrets database */
30 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)
54 if (!tdb) return False;
56 kbuf.dsize = strlen(key);
57 dbuf = tdb_fetch(tdb, kbuf);
58 if (size) *size = dbuf.dsize;
62 /* store a secrets entry
64 BOOL secrets_store(char *key, void *data, size_t size)
67 if (!tdb) return False;
69 kbuf.dsize = strlen(key);
72 return tdb_store(tdb, kbuf, dbuf, TDB_REPLACE) == 0;
76 /* delete a secets database entry
78 BOOL secrets_delete(char *key)
81 if (!tdb) return False;
83 kbuf.dsize = strlen(key);
84 return tdb_delete(tdb, kbuf) == 0;
87 BOOL secrets_store_domain_sid(char *domain, DOM_SID *sid)
91 slprintf(key, sizeof(key)-1, "%s/%s", SECRETS_DOMAIN_SID, domain);
92 return secrets_store(key, sid, sizeof(DOM_SID));
95 BOOL secrets_fetch_domain_sid(char *domain, DOM_SID *sid)
101 slprintf(key, sizeof(key)-1, "%s/%s", SECRETS_DOMAIN_SID, domain);
102 dyn_sid = (DOM_SID *)secrets_fetch(key, &size);
107 if (size != sizeof(DOM_SID))
119 /************************************************************************
120 form a key for fetching a domain trust password
121 ************************************************************************/
122 char *trust_keystr(char *domain)
124 static fstring keystr;
126 slprintf(keystr,sizeof(keystr)-1,"%s/%s",
127 SECRETS_MACHINE_ACCT_PASS, domain);
132 /************************************************************************
133 Routine to get the trust account password for a domain.
134 The user of this function must have locked the trust password file.
135 ************************************************************************/
136 BOOL secrets_fetch_trust_account_password(char *domain, uint8 ret_pwd[16],
137 time_t *pass_last_set_time)
139 struct machine_acct_pass *pass;
142 if (!(pass = secrets_fetch(trust_keystr(domain), &size)) ||
143 size != sizeof(*pass))
146 if (pass_last_set_time) *pass_last_set_time = pass->mod_time;
147 memcpy(ret_pwd, pass->hash, 16);
153 /************************************************************************
154 Routine to set the trust account password for a domain.
155 ************************************************************************/
156 BOOL secrets_store_trust_account_password(char *domain, uint8 new_pwd[16])
158 struct machine_acct_pass pass;
160 pass.mod_time = time(NULL);
161 memcpy(pass.hash, new_pwd, 16);
163 return secrets_store(trust_keystr(domain), (void *)&pass, sizeof(pass));
166 /************************************************************************
167 Routine to delete the trust account password file for a domain.
168 ************************************************************************/
170 BOOL trust_password_delete(char *domain)
172 return secrets_delete(trust_keystr(domain));
175 /*******************************************************************
176 Reset the 'done' variables so after a client process is created
177 from a fork call these calls will be re-done. This should be
178 expanded if more variables need reseting.
179 ******************************************************************/
181 void reset_globals_after_fork(void)
186 * Increment the global seed value to ensure every smbd starts
187 * with a new random seed.
191 uint32 initial_val = sys_getpid();
192 tdb_change_int_atomic(tdb, "INFO/random_seed", (int *)&initial_val, 1);
193 set_rand_reseed_data((unsigned char *)&initial_val, sizeof(initial_val));
197 * Re-seed the random crypto generator, so all smbd's
198 * started from the same parent won't generate the same
201 generate_random_buffer( &dummy, 1, True);