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