2 Unix SMB/CIFS implementation.
4 User credentials handling (as regards on-disk files)
6 Copyright (C) Jelmer Vernooij 2005
7 Copyright (C) Tim Potter 2001
8 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
25 #include "lib/events/events.h"
27 #include "librpc/gen_ndr/samr.h" /* for struct samrPassword */
28 #include "param/secrets.h"
29 #include "system/filesys.h"
30 #include "auth/credentials/credentials.h"
31 #include "auth/credentials/credentials_proto.h"
32 #include "auth/credentials/credentials_krb5.h"
33 #include "auth/kerberos/kerberos_util.h"
34 #include "param/param.h"
35 #include "lib/events/events.h"
36 #include "dsdb/samdb/samdb.h"
39 * Fill in credentials for the machine trust account, from the secrets database.
41 * @param cred Credentials structure to fill in
42 * @retval NTSTATUS error detailing any failure
44 _PUBLIC_ NTSTATUS cli_credentials_set_secrets(struct cli_credentials *cred,
45 struct loadparm_context *lp_ctx,
46 struct ldb_context *ldb,
54 struct ldb_message *msg;
56 const char *machine_account;
60 enum netr_SchannelType sct;
61 const char *salt_principal;
63 const struct ldb_val *whenChanged;
65 /* ok, we are going to get it now, don't recurse back here */
66 cred->machine_account_pending = false;
68 /* some other parts of the system will key off this */
69 cred->machine_account = true;
71 mem_ctx = talloc_named(cred, 0, "cli_credentials fetch machine password");
74 /* Local secrets are stored in secrets.ldb */
75 ldb = secrets_db_connect(mem_ctx, lp_ctx);
77 /* set anonymous as the fallback, if the machine account won't work */
78 cli_credentials_set_anonymous(cred);
79 *error_string = talloc_strdup(cred, "Could not open secrets.ldb");
81 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
85 ldb_ret = dsdb_search_one(ldb, mem_ctx, &msg,
86 ldb_dn_new(mem_ctx, ldb, base),
88 NULL, 0, "%s", filter);
90 if (ldb_ret != LDB_SUCCESS) {
91 *error_string = talloc_asprintf(cred, "Could not find entry to match filter: '%s' base: '%s': %s: %s\n",
92 filter, base ? base : "",
93 ldb_strerror(ldb_ret), ldb_errstring(ldb));
94 /* set anonymous as the fallback, if the machine account won't work */
95 cli_credentials_set_anonymous(cred);
97 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
100 password = ldb_msg_find_attr_as_string(msg, "secret", NULL);
102 machine_account = ldb_msg_find_attr_as_string(msg, "samAccountName", NULL);
104 if (!machine_account) {
105 machine_account = ldb_msg_find_attr_as_string(msg, "servicePrincipalName", NULL);
107 if (!machine_account) {
108 const char *ldap_bind_dn = ldb_msg_find_attr_as_string(msg, "ldapBindDn", NULL);
110 *error_string = talloc_asprintf(cred,
111 "Could not find 'samAccountName', "
112 "'servicePrincipalName' or "
113 "'ldapBindDn' in secrets record: %s",
114 ldb_dn_get_linearized(msg->dn));
115 /* set anonymous as the fallback, if the machine account won't work */
116 cli_credentials_set_anonymous(cred);
117 talloc_free(mem_ctx);
118 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
120 /* store bind dn in credentials */
121 cli_credentials_set_bind_dn(cred, ldap_bind_dn);
126 salt_principal = ldb_msg_find_attr_as_string(msg, "saltPrincipal", NULL);
127 cli_credentials_set_salt_principal(cred, salt_principal);
129 sct = ldb_msg_find_attr_as_int(msg, "secureChannelType", 0);
131 cli_credentials_set_secure_channel_type(cred, sct);
135 const struct ldb_val *nt_password_hash = ldb_msg_find_ldb_val(msg, "unicodePwd");
136 struct samr_Password hash;
138 if (nt_password_hash) {
139 memcpy(hash.hash, nt_password_hash->data,
140 MIN(nt_password_hash->length, sizeof(hash.hash)));
142 cli_credentials_set_nt_hash(cred, &hash, CRED_SPECIFIED);
144 cli_credentials_set_password(cred, NULL, CRED_SPECIFIED);
147 cli_credentials_set_password(cred, password, CRED_SPECIFIED);
151 domain = ldb_msg_find_attr_as_string(msg, "flatname", NULL);
153 cli_credentials_set_domain(cred, domain, CRED_SPECIFIED);
156 realm = ldb_msg_find_attr_as_string(msg, "realm", NULL);
158 cli_credentials_set_realm(cred, realm, CRED_SPECIFIED);
161 if (machine_account) {
162 cli_credentials_set_username(cred, machine_account, CRED_SPECIFIED);
165 cli_credentials_set_kvno(cred, ldb_msg_find_attr_as_int(msg, "msDS-KeyVersionNumber", 0));
167 whenChanged = ldb_msg_find_ldb_val(msg, "whenChanged");
170 if (ldb_val_to_time(whenChanged, &lct) == LDB_SUCCESS) {
171 cli_credentials_set_password_last_changed_time(cred, lct);
175 /* If there was an external keytab specified by reference in
176 * the LDB, then use this. Otherwise we will make one up
177 * (chewing CPU time) from the password */
178 keytab = keytab_name_from_msg(cred, ldb, msg);
180 cli_credentials_set_keytab_name(cred, lp_ctx, keytab, CRED_SPECIFIED);
183 talloc_free(mem_ctx);
189 * Fill in credentials for the machine trust account, from the secrets database.
191 * @param cred Credentials structure to fill in
192 * @retval NTSTATUS error detailing any failure
194 _PUBLIC_ NTSTATUS cli_credentials_set_machine_account(struct cli_credentials *cred,
195 struct loadparm_context *lp_ctx)
200 /* Bleh, nasty recursion issues: We are setting a machine
201 * account here, so we don't want the 'pending' flag around
203 cred->machine_account_pending = false;
204 filter = talloc_asprintf(cred, SECRETS_PRIMARY_DOMAIN_FILTER,
205 cli_credentials_get_domain(cred));
206 status = cli_credentials_set_secrets(cred, lp_ctx, NULL,
207 SECRETS_PRIMARY_DOMAIN_DN,
208 filter, &error_string);
209 if (!NT_STATUS_IS_OK(status)) {
210 DEBUG(1, ("Could not find machine account in secrets database: %s: %s\n", nt_errstr(status), error_string));
211 talloc_free(error_string);
217 * Fill in credentials for the machine trust account, from the secrets database.
219 * @param cred Credentials structure to fill in
220 * @retval NTSTATUS error detailing any failure
222 NTSTATUS cli_credentials_set_krbtgt(struct cli_credentials *cred,
223 struct loadparm_context *lp_ctx)
228 /* Bleh, nasty recursion issues: We are setting a machine
229 * account here, so we don't want the 'pending' flag around
231 cred->machine_account_pending = false;
232 filter = talloc_asprintf(cred, SECRETS_KRBTGT_SEARCH,
233 cli_credentials_get_realm(cred),
234 cli_credentials_get_domain(cred));
235 status = cli_credentials_set_secrets(cred, lp_ctx, NULL,
236 SECRETS_PRINCIPALS_DN,
237 filter, &error_string);
238 if (!NT_STATUS_IS_OK(status)) {
239 DEBUG(1, ("Could not find krbtgt (master Kerberos) account in secrets database: %s: %s\n", nt_errstr(status), error_string));
240 talloc_free(error_string);
246 * Fill in credentials for a particular prinicpal, from the secrets database.
248 * @param cred Credentials structure to fill in
249 * @retval NTSTATUS error detailing any failure
251 _PUBLIC_ NTSTATUS cli_credentials_set_stored_principal(struct cli_credentials *cred,
252 struct loadparm_context *lp_ctx,
253 const char *serviceprincipal)
258 /* Bleh, nasty recursion issues: We are setting a machine
259 * account here, so we don't want the 'pending' flag around
261 cred->machine_account_pending = false;
262 filter = talloc_asprintf(cred, SECRETS_PRINCIPAL_SEARCH,
263 cli_credentials_get_realm(cred),
264 cli_credentials_get_domain(cred),
266 status = cli_credentials_set_secrets(cred, lp_ctx, NULL,
267 SECRETS_PRINCIPALS_DN, filter,
269 if (!NT_STATUS_IS_OK(status)) {
270 DEBUG(1, ("Could not find %s principal in secrets database: %s: %s\n", serviceprincipal, nt_errstr(status), error_string));
276 * Ask that when required, the credentials system will be filled with
277 * machine trust account, from the secrets database.
279 * @param cred Credentials structure to fill in
280 * @note This function is used to call the above function after, rather
281 * than during, popt processing.
284 _PUBLIC_ void cli_credentials_set_machine_account_pending(struct cli_credentials *cred,
285 struct loadparm_context *lp_ctx)
287 cred->machine_account_pending = true;
288 cred->machine_account_pending_lp_ctx = lp_ctx;