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         enum netr_SchannelType 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(talloc_tos(), 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
  55 ADS_STATUS ads_guess_service_principal(ADS_STRUCT *ads,
  56                                        char **returned_principal)
  57 {
  58         char *princ = NULL;
  59
  60         if (ads->server.realm && ads->server.ldap_server) {
  61                 char *server, *server_realm;
  62
  63                 server = SMB_STRDUP(ads->server.ldap_server);
  64                 server_realm = SMB_STRDUP(ads->server.realm);
  65
  66                 if (!server || !server_realm) {
  67                         SAFE_FREE(server);
  68                         SAFE_FREE(server_realm);
  69                         return ADS_ERROR(LDAP_NO_MEMORY);
  70                 }
  71
  72                 strlower_m(server);
  73                 strupper_m(server_realm);
  74                 if (asprintf(&princ, "ldap/%s@%s", server, server_realm) == -1) {
  75                         SAFE_FREE(server);
  76                         SAFE_FREE(server_realm);
  77                         return ADS_ERROR(LDAP_NO_MEMORY);
  78                 }
  79
  80                 SAFE_FREE(server);
  81                 SAFE_FREE(server_realm);
  82
  83                 if (!princ) {
  84                         return ADS_ERROR(LDAP_NO_MEMORY);
  85                 }
  86         } else if (ads->config.realm && ads->config.ldap_server_name) {
  87                 char *server, *server_realm;
  88
  89                 server = SMB_STRDUP(ads->config.ldap_server_name);
  90                 server_realm = SMB_STRDUP(ads->config.realm);
  91
  92                 if (!server || !server_realm) {
  93                         SAFE_FREE(server);
  94                         SAFE_FREE(server_realm);
  95                         return ADS_ERROR(LDAP_NO_MEMORY);
  96                 }
  97
  98                 strlower_m(server);
  99                 strupper_m(server_realm);
 100                 if (asprintf(&princ, "ldap/%s@%s", server, server_realm) == -1) {
 101                         SAFE_FREE(server);
 102                         SAFE_FREE(server_realm);
 103                         return ADS_ERROR(LDAP_NO_MEMORY);
 104                 }
 105
 106                 SAFE_FREE(server);
 107                 SAFE_FREE(server_realm);
 108
 109                 if (!princ) {
 110                         return ADS_ERROR(LDAP_NO_MEMORY);
 111                 }
 112         }
 113
 114         if (!princ) {
 115                 return ADS_ERROR(LDAP_PARAM_ERROR);
 116         }
 117
 118         *returned_principal = princ;
 119
 120         return ADS_SUCCESS;
 121 }
 122
 123 #endif