source/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 2 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, write to the Free Software
  18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #include "includes.h"
  22
  23 #ifdef HAVE_KRB5
  24
  25 ADS_STATUS ads_change_trust_account_password(ADS_STRUCT *ads, char *host_principal)
  26 {
  27         char *password;
  28         char *new_password;
  29         ADS_STATUS ret;
  30         uint32 sec_channel_type;
  31
  32         if ((password = secrets_fetch_machine_password(lp_workgroup(), NULL, &sec_channel_type)) == NULL) {
  33                 DEBUG(1,("Failed to retrieve password for principal %s\n", host_principal));
  34                 return ADS_ERROR_SYSTEM(ENOENT);
  35         }
  36
  37         new_password = generate_random_str(DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
  38
  39         ret = kerberos_set_password(ads->auth.kdc_server, host_principal, password, host_principal, new_password, ads->auth.time_offset);
  40
  41         if (!ADS_ERR_OK(ret)) {
  42                 goto failed;
  43         }
  44
  45         if (!secrets_store_machine_password(new_password, lp_workgroup(), sec_channel_type)) {
  46                 DEBUG(1,("Failed to save machine password\n"));
  47                 ret = ADS_ERROR_SYSTEM(EACCES);
  48                 goto failed;
  49         }
  50
  51 failed:
  52         SAFE_FREE(password);
  53         return ret;
  54 }
  55
  56 ADS_STATUS ads_guess_service_principal(ADS_STRUCT *ads,
  57                                        char **returned_principal)
  58 {
  59         char *princ = NULL;
  60
  61         if (ads->server.realm && ads->server.ldap_server) {
  62                 char *server, *server_realm;
  63
  64                 server = SMB_STRDUP(ads->server.ldap_server);
  65                 server_realm = SMB_STRDUP(ads->server.realm);
  66
  67                 if (!server || !server_realm) {
  68                         return ADS_ERROR(LDAP_NO_MEMORY);
  69                 }
  70
  71                 strlower_m(server);
  72                 strupper_m(server_realm);
  73                 asprintf(&princ, "ldap/%s@%s", server, server_realm);
  74
  75                 SAFE_FREE(server);
  76                 SAFE_FREE(server_realm);
  77
  78                 if (!princ) {
  79                         return ADS_ERROR(LDAP_NO_MEMORY);
  80                 }
  81         } else if (ads->config.realm && ads->config.ldap_server_name) {
  82                 char *server, *server_realm;
  83
  84                 server = SMB_STRDUP(ads->config.ldap_server_name);
  85                 server_realm = SMB_STRDUP(ads->config.realm);
  86
  87                 if (!server || !server_realm) {
  88                         return ADS_ERROR(LDAP_NO_MEMORY);
  89                 }
  90
  91                 strlower_m(server);
  92                 strupper_m(server_realm);
  93                 asprintf(&princ, "ldap/%s@%s", server, server_realm);
  94
  95                 SAFE_FREE(server);
  96                 SAFE_FREE(server_realm);
  97
  98                 if (!princ) {
  99                         return ADS_ERROR(LDAP_NO_MEMORY);
 100                 }
 101         }
 102
 103         if (!princ) {
 104                 return ADS_ERROR(LDAP_PARAM_ERROR);
 105         }
 106
 107         *returned_principal = princ;
 108
 109         return ADS_SUCCESS;
 110 }
 111
 112 #endif