r23784: use the GPLv3 boilerplate as recommended by the FSF and the license text
[jra/samba/.git] / source3 / libads / util.c
1 /* 
2    Unix SMB/CIFS implementation.
3    krb5 set password implementation
4    Copyright (C) Remus Koos 2001 (remuskoos@yahoo.com)
5    
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 3 of the License, or
9    (at your option) any later version.
10    
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.
15    
16    You should have received a copy of the GNU General Public License
17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
18 */
19
20 #include "includes.h"
21
22 #ifdef HAVE_KRB5
23
24 ADS_STATUS ads_change_trust_account_password(ADS_STRUCT *ads, char *host_principal)
25 {
26         char *password;
27         char *new_password;
28         ADS_STATUS ret;
29         uint32 sec_channel_type;
30     
31         if ((password = secrets_fetch_machine_password(lp_workgroup(), NULL, &sec_channel_type)) == NULL) {
32                 DEBUG(1,("Failed to retrieve password for principal %s\n", host_principal));
33                 return ADS_ERROR_SYSTEM(ENOENT);
34         }
35
36         new_password = generate_random_str(DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
37     
38         ret = kerberos_set_password(ads->auth.kdc_server, host_principal, password, host_principal, new_password, ads->auth.time_offset);
39
40         if (!ADS_ERR_OK(ret)) {
41                 goto failed;
42         }
43
44         if (!secrets_store_machine_password(new_password, lp_workgroup(), sec_channel_type)) {
45                 DEBUG(1,("Failed to save machine password\n"));
46                 ret = ADS_ERROR_SYSTEM(EACCES);
47                 goto failed;
48         }
49
50 failed:
51         SAFE_FREE(password);
52         return ret;
53 }
54 #endif