source/lib/pam_errors.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  PAM error mapping functions
   4  *  Copyright (C) Andrew Bartlett 2002
   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 WITH_PAM
  24 #include <security/pam_appl.h>
  25
  26 #if defined(PAM_AUTHTOK_RECOVERY_ERR) && !defined(PAM_AUTHTOK_RECOVER_ERR)
  27 #define PAM_AUTHTOK_RECOVER_ERR PAM_AUTHTOK_RECOVERY_ERR
  28 #endif
  29
  30 /* PAM -> NT_STATUS map */
  31 static struct {
  32         int pam_code;
  33         NTSTATUS ntstatus;
  34 } pam_to_nt_status_map[] = {
  35         {PAM_OPEN_ERR, NT_STATUS_UNSUCCESSFUL},
  36         {PAM_SYMBOL_ERR, NT_STATUS_UNSUCCESSFUL},
  37         {PAM_SERVICE_ERR, NT_STATUS_UNSUCCESSFUL},
  38         {PAM_SYSTEM_ERR,  NT_STATUS_UNSUCCESSFUL},
  39         {PAM_BUF_ERR, NT_STATUS_UNSUCCESSFUL},
  40         {PAM_PERM_DENIED, NT_STATUS_ACCESS_DENIED},
  41         {PAM_AUTH_ERR, NT_STATUS_WRONG_PASSWORD},
  42         {PAM_CRED_INSUFFICIENT, NT_STATUS_INSUFFICIENT_LOGON_INFO}, /* FIXME:  Is this correct? */
  43         {PAM_AUTHINFO_UNAVAIL, NT_STATUS_LOGON_FAILURE},
  44         {PAM_USER_UNKNOWN, NT_STATUS_NO_SUCH_USER},
  45         {PAM_MAXTRIES, NT_STATUS_REMOTE_SESSION_LIMIT}, /* FIXME:  Is this correct? */
  46         {PAM_NEW_AUTHTOK_REQD, NT_STATUS_PASSWORD_MUST_CHANGE},
  47         {PAM_ACCT_EXPIRED, NT_STATUS_ACCOUNT_EXPIRED},
  48         {PAM_SESSION_ERR, NT_STATUS_INSUFFICIENT_RESOURCES},
  49         {PAM_CRED_UNAVAIL, NT_STATUS_NO_TOKEN},  /* FIXME:  Is this correct? */
  50         {PAM_CRED_EXPIRED, NT_STATUS_PASSWORD_EXPIRED},  /* FIXME:  Is this correct? */
  51         {PAM_CRED_ERR, NT_STATUS_UNSUCCESSFUL},
  52         {PAM_AUTHTOK_ERR, NT_STATUS_UNSUCCESSFUL},
  53 #ifdef PAM_AUTHTOK_RECOVER_ERR
  54         {PAM_AUTHTOK_RECOVER_ERR, NT_STATUS_UNSUCCESSFUL},
  55 #endif
  56         {PAM_AUTHTOK_EXPIRED, NT_STATUS_PASSWORD_EXPIRED},
  57         {PAM_SUCCESS, NT_STATUS_OK}
  58 };
  59
  60 /* NT_STATUS -> PAM map */
  61 static struct {
  62         NTSTATUS ntstatus;
  63         int pam_code;
  64 } nt_status_to_pam_map[] = {
  65         {NT_STATUS_UNSUCCESSFUL, PAM_SYSTEM_ERR},
  66         {NT_STATUS_NO_SUCH_USER, PAM_USER_UNKNOWN},
  67         {NT_STATUS_WRONG_PASSWORD, PAM_AUTH_ERR},
  68         {NT_STATUS_LOGON_FAILURE, PAM_AUTH_ERR},
  69         {NT_STATUS_ACCOUNT_EXPIRED, PAM_ACCT_EXPIRED},
  70         {NT_STATUS_PASSWORD_MUST_CHANGE, PAM_NEW_AUTHTOK_REQD},
  71         {NT_STATUS_OK, PAM_SUCCESS}
  72 };
  73
  74 /*****************************************************************************
  75 convert a PAM error to a NT status32 code
  76  *****************************************************************************/
  77 NTSTATUS pam_to_nt_status(int pam_error)
  78 {
  79         int i;
  80         if (pam_error == 0) return NT_STATUS_OK;
  81
  82         for (i=0; NT_STATUS_V(pam_to_nt_status_map[i].ntstatus); i++) {
  83                 if (pam_error == pam_to_nt_status_map[i].pam_code)
  84                         return pam_to_nt_status_map[i].ntstatus;
  85         }
  86         return NT_STATUS_UNSUCCESSFUL;
  87 }
  88
  89 /*****************************************************************************
  90 convert an NT status32 code to a PAM error
  91  *****************************************************************************/
  92 int nt_status_to_pam(NTSTATUS nt_status)
  93 {
  94         int i;
  95         if NT_STATUS_IS_OK(nt_status) return PAM_SUCCESS;
  96
  97         for (i=0; NT_STATUS_V(nt_status_to_pam_map[i].ntstatus); i++) {
  98                 if (NT_STATUS_EQUAL(nt_status,nt_status_to_pam_map[i].ntstatus))
  99                         return nt_status_to_pam_map[i].pam_code;
 100         }
 101         return PAM_SYSTEM_ERR;
 102 }
 103
 104 #else
 105
 106 /*****************************************************************************
 107 convert a PAM error to a NT status32 code
 108  *****************************************************************************/
 109 NTSTATUS pam_to_nt_status(int pam_error)
 110 {
 111         if (pam_error == 0) return NT_STATUS_OK;
 112         return NT_STATUS_UNSUCCESSFUL;
 113 }
 114
 115 /*****************************************************************************
 116 convert an NT status32 code to a PAM error
 117  *****************************************************************************/
 118 int nt_status_to_pam(NTSTATUS nt_status)
 119 {
 120         if (NT_STATUS_EQUAL(nt_status, NT_STATUS_OK)) return 0;
 121         return 4; /* PAM_SYSTEM_ERR */
 122 }
 123
 124 #endif
 125