/*

 *  Unix SMB/CIFS implementation.

 *  Kerberos error mapping functions

 *  Copyright (C) Guenther Deschner 2005

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; either version 3 of the License, or

 *  (at your option) any later version.

 *

 *  This program is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 *  GNU General Public License for more details.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; if not, see <http://www.gnu.org/licenses/>.

 */

#include "includes.h"

#include "krb5_samba.h"

#ifdef HAVE_KRB5

static const struct {

  krb5_error_code krb5_code;

  NTSTATUS ntstatus;

} krb5_to_nt_status_map[] = {

  {KRB5_CC_IO, NT_STATUS_UNEXPECTED_IO_ERROR},

  {KRB5KDC_ERR_BADOPTION, NT_STATUS_INVALID_PARAMETER},

  {KRB5KDC_ERR_CLIENT_REVOKED, NT_STATUS_ACCOUNT_LOCKED_OUT},

  {KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN, NT_STATUS_INVALID_ACCOUNT_NAME},

  {KRB5KDC_ERR_ETYPE_NOSUPP, NT_STATUS_LOGON_FAILURE},

#if defined(KRB5KDC_ERR_KEY_EXP) /* MIT */

  {KRB5KDC_ERR_KEY_EXP, NT_STATUS_PASSWORD_EXPIRED},

#else /* old Heimdal releases have it with different name only in an enum: */

  {KRB5KDC_ERR_KEY_EXPIRED, NT_STATUS_PASSWORD_EXPIRED},

#endif

  {25, NT_STATUS_PASSWORD_EXPIRED}, /* FIXME: bug in heimdal 0.7 krb5_get_init_creds_password (Inappropriate ioctl for device (25)) */

  {KRB5KDC_ERR_NULL_KEY, NT_STATUS_LOGON_FAILURE},

  {KRB5KDC_ERR_POLICY, NT_STATUS_INVALID_WORKSTATION},

  {KRB5KDC_ERR_PREAUTH_FAILED, NT_STATUS_LOGON_FAILURE},

  {KRB5KDC_ERR_SERVICE_REVOKED, NT_STATUS_ACCESS_DENIED},

  {KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN, NT_STATUS_INVALID_COMPUTER_NAME},

  {KRB5KDC_ERR_SUMTYPE_NOSUPP, NT_STATUS_LOGON_FAILURE},

  {KRB5KDC_ERR_TGT_REVOKED, NT_STATUS_ACCESS_DENIED},

  {KRB5_KDC_UNREACH, NT_STATUS_NO_LOGON_SERVERS},

  {KRB5KRB_AP_ERR_BAD_INTEGRITY, NT_STATUS_LOGON_FAILURE},

  {KRB5KRB_AP_ERR_MODIFIED, NT_STATUS_LOGON_FAILURE},

  {KRB5KRB_AP_ERR_SKEW, NT_STATUS_TIME_DIFFERENCE_AT_DC},

  {KRB5_KDCREP_SKEW, NT_STATUS_TIME_DIFFERENCE_AT_DC},

  {KRB5KRB_AP_ERR_TKT_EXPIRED, NT_STATUS_LOGON_FAILURE},

  {KRB5KRB_ERR_GENERIC, NT_STATUS_UNSUCCESSFUL},

#if defined(KRB5KRB_ERR_RESPONSE_TOO_BIG)

  {KRB5KRB_ERR_RESPONSE_TOO_BIG, NT_STATUS_PROTOCOL_UNREACHABLE},

#endif

  {KRB5_CC_NOTFOUND, NT_STATUS_NO_SUCH_FILE},

  {KRB5_FCC_NOFILE, NT_STATUS_NO_SUCH_FILE},

  {KRB5_RC_MALLOC, NT_STATUS_NO_MEMORY},

  {ENOMEM, NT_STATUS_NO_MEMORY},

  {KRB5_REALM_CANT_RESOLVE, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND},

  {KRB5_REALM_UNKNOWN, NT_STATUS_NO_SUCH_DOMAIN},

  /* Must be last entry */

  {KRB5KDC_ERR_NONE, NT_STATUS_OK}

};

static const struct {

  NTSTATUS ntstatus;

  krb5_error_code krb5_code;

} nt_status_to_krb5_map[] = {

  {NT_STATUS_LOGON_FAILURE, KRB5KDC_ERR_PREAUTH_FAILED},

  {NT_STATUS_NO_LOGON_SERVERS, KRB5_KDC_UNREACH},

  {NT_STATUS_OK, 0}

};

/*****************************************************************************

convert a KRB5 error to a NT status32 code

 *****************************************************************************/

 NTSTATUS krb5_to_nt_status(krb5_error_code kerberos_error)

{

  int i;

  if (kerberos_error == 0) {

    return NT_STATUS_OK;

  }

  for (i=0; NT_STATUS_V(krb5_to_nt_status_map[i].ntstatus); i++) {

    if (kerberos_error == krb5_to_nt_status_map[i].krb5_code)

      return krb5_to_nt_status_map[i].ntstatus;

  }

  return NT_STATUS_UNSUCCESSFUL;

}

/*****************************************************************************

convert an NT status32 code to a KRB5 error

 *****************************************************************************/

 krb5_error_code nt_status_to_krb5(NTSTATUS nt_status)

{

  int i;

  if NT_STATUS_IS_OK(nt_status) {

    return 0;

  }

  for (i=0; NT_STATUS_V(nt_status_to_krb5_map[i].ntstatus); i++) {

    if (NT_STATUS_EQUAL(nt_status,nt_status_to_krb5_map[i].ntstatus))

      return nt_status_to_krb5_map[i].krb5_code;

  }

  return KRB5KRB_ERR_GENERIC;

}

#endif