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