2 Unix SMB/CIFS implementation.
3 Copyright (C) Andrew Tridgell 1992-2001
4 Copyright (C) Andrew Bartlett 2002
5 Copyright (C) Rafal Szczesniak 2002
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 3 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, see <http://www.gnu.org/licenses/>.
21 /* the Samba secrets database stores any generated, private information
22 such as the local SID and machine trust password */
26 #include "param/param.h"
27 #include "system/filesys.h"
30 #include "lib/ldb/include/ldb.h"
31 #include "lib/tdb/include/tdb.h"
32 #include "lib/util/util_tdb.h"
33 #include "lib/util/util_ldb.h"
34 #include "dsdb/samdb/samdb.h"
36 static struct tdb_wrap *tdb;
39 * Use a TDB to store an incrementing random seed.
41 * Initialised to the current pid, the very first time Samba starts,
42 * and incremented by one each time it is needed.
44 * @note Not called by systems with a working /dev/urandom.
46 static void get_rand_seed(int *new_seed)
50 tdb_change_int32_atomic(tdb->tdb, "INFO/random_seed", new_seed, 1);
54 /* close the secrets database */
55 void secrets_shutdown(void)
60 /* open up the secrets database */
61 bool secrets_init(void)
69 asprintf(&fname, "%s/secrets.tdb", lp_private_dir(global_loadparm));
71 tdb = tdb_wrap_open(talloc_autofree_context(), fname, 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
74 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);
88 /* Ensure that the reseed is done now, while we are root, etc */
89 generate_random_buffer(&dummy, sizeof(dummy));
95 connect to the schannel ldb
97 struct ldb_context *secrets_db_connect(TALLOC_CTX *mem_ctx)
101 struct ldb_context *ldb;
103 const char *init_ldif =
104 "dn: @ATTRIBUTES\n" \
105 "computerName: CASE_INSENSITIVE\n" \
106 "flatname: CASE_INSENSITIVE\n";
108 url = lp_secrets_url(global_loadparm);
109 if (!url || !url[0]) {
113 path = private_path(mem_ctx, global_loadparm, url);
118 existed = file_exist(path);
120 /* Secrets.ldb *must* always be local. If we call for a
121 * system_session() we will recurse */
122 ldb = ldb_wrap_connect(mem_ctx, global_loadparm, path, NULL, NULL, 0, NULL);
129 gendb_add_ldif(ldb, init_ldif);
135 struct dom_sid *secrets_get_domain_sid(TALLOC_CTX *mem_ctx,
138 struct ldb_context *ldb;
139 struct ldb_message **msgs;
141 const char *attrs[] = { "objectSid", NULL };
142 struct dom_sid *result = NULL;
144 ldb = secrets_db_connect(mem_ctx);
146 DEBUG(5, ("secrets_db_connect failed\n"));
150 ldb_ret = gendb_search(ldb, ldb,
151 ldb_dn_new(mem_ctx, ldb, SECRETS_PRIMARY_DOMAIN_DN),
153 SECRETS_PRIMARY_DOMAIN_FILTER, domain);
156 DEBUG(5, ("Error searching for domain SID for %s: %s",
157 domain, ldb_errstring(ldb)));
163 DEBUG(5, ("Did not find domain record for %s\n", domain));
169 DEBUG(5, ("Found more than one (%d) domain records for %s\n",
175 result = samdb_result_dom_sid(mem_ctx, msgs[0], "objectSid");
176 if (result == NULL) {
177 DEBUG(0, ("Domain object for %s does not contain a SID!\n",