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 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, 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 #if defined(HAVE_SECURITY_PAM_APPL_H)
  25 #include <security/pam_appl.h>
  26 #elif defined(HAVE_PAM_PAM_APPL_H)
  27 #include <pam/pam_appl.h>
  28 #endif
  29
  30 #if defined(PAM_AUTHTOK_RECOVERY_ERR) && !defined(PAM_AUTHTOK_RECOVER_ERR)
  31 #define PAM_AUTHTOK_RECOVER_ERR PAM_AUTHTOK_RECOVERY_ERR
  32 #endif
  33
  34 /* PAM -> NT_STATUS map */
  35 static const struct {
  36         int pam_code;
  37         NTSTATUS ntstatus;
  38 } pam_to_nt_status_map[] = {
  39         {PAM_OPEN_ERR, NT_STATUS_UNSUCCESSFUL},
  40         {PAM_SYMBOL_ERR, NT_STATUS_UNSUCCESSFUL},
  41         {PAM_SERVICE_ERR, NT_STATUS_UNSUCCESSFUL},
  42         {PAM_SYSTEM_ERR,  NT_STATUS_UNSUCCESSFUL},
  43         {PAM_BUF_ERR, NT_STATUS_NO_MEMORY},
  44         {PAM_PERM_DENIED, NT_STATUS_ACCESS_DENIED},
  45         {PAM_AUTH_ERR, NT_STATUS_WRONG_PASSWORD},
  46         {PAM_CRED_INSUFFICIENT, NT_STATUS_INSUFFICIENT_LOGON_INFO}, /* FIXME:  Is this correct? */
  47         {PAM_AUTHINFO_UNAVAIL, NT_STATUS_LOGON_FAILURE},
  48         {PAM_USER_UNKNOWN, NT_STATUS_NO_SUCH_USER},
  49         {PAM_MAXTRIES, NT_STATUS_REMOTE_SESSION_LIMIT}, /* FIXME:  Is this correct? */
  50         {PAM_NEW_AUTHTOK_REQD, NT_STATUS_PASSWORD_MUST_CHANGE},
  51         {PAM_ACCT_EXPIRED, NT_STATUS_ACCOUNT_EXPIRED},
  52         {PAM_SESSION_ERR, NT_STATUS_INSUFFICIENT_RESOURCES},
  53         {PAM_CRED_UNAVAIL, NT_STATUS_NO_TOKEN},  /* FIXME:  Is this correct? */
  54         {PAM_CRED_EXPIRED, NT_STATUS_PASSWORD_EXPIRED},  /* FIXME:  Is this correct? */
  55         {PAM_CRED_ERR, NT_STATUS_UNSUCCESSFUL},
  56         {PAM_AUTHTOK_ERR, NT_STATUS_UNSUCCESSFUL},
  57 #ifdef PAM_AUTHTOK_RECOVER_ERR
  58         {PAM_AUTHTOK_RECOVER_ERR, NT_STATUS_UNSUCCESSFUL},
  59 #endif
  60         {PAM_AUTHTOK_EXPIRED, NT_STATUS_PASSWORD_EXPIRED},
  61         {PAM_SUCCESS, NT_STATUS_OK}
  62 };
  63
  64 /* NT_STATUS -> PAM map */
  65 static const struct {
  66         NTSTATUS ntstatus;
  67         int pam_code;
  68 } nt_status_to_pam_map[] = {
  69         {NT_STATUS_UNSUCCESSFUL, PAM_SYSTEM_ERR},
  70         {NT_STATUS_NO_SUCH_USER, PAM_USER_UNKNOWN},
  71         {NT_STATUS_WRONG_PASSWORD, PAM_AUTH_ERR},
  72         {NT_STATUS_LOGON_FAILURE, PAM_AUTH_ERR},
  73         {NT_STATUS_ACCOUNT_EXPIRED, PAM_ACCT_EXPIRED},
  74         {NT_STATUS_PASSWORD_EXPIRED, PAM_AUTHTOK_EXPIRED},
  75         {NT_STATUS_PASSWORD_MUST_CHANGE, PAM_NEW_AUTHTOK_REQD},
  76         {NT_STATUS_ACCOUNT_LOCKED_OUT, PAM_MAXTRIES},
  77         {NT_STATUS_NO_MEMORY, PAM_BUF_ERR},
  78         {NT_STATUS_PASSWORD_RESTRICTION, PAM_PERM_DENIED},
  79         {NT_STATUS_BACKUP_CONTROLLER, PAM_AUTHINFO_UNAVAIL},
  80         {NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND, PAM_AUTHINFO_UNAVAIL},
  81         {NT_STATUS_NO_LOGON_SERVERS, PAM_AUTHINFO_UNAVAIL},
  82         {NT_STATUS_INVALID_WORKSTATION, PAM_PERM_DENIED},
  83         {NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT, PAM_AUTHINFO_UNAVAIL},
  84         {NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT, PAM_AUTHINFO_UNAVAIL},
  85         {NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT, PAM_AUTHINFO_UNAVAIL},
  86         {NT_STATUS_OK, PAM_SUCCESS}
  87 };
  88
  89 /*****************************************************************************
  90 convert a PAM error to a NT status32 code
  91  *****************************************************************************/
  92 NTSTATUS pam_to_nt_status(int pam_error)
  93 {
  94         int i;
  95         if (pam_error == 0) return NT_STATUS_OK;
  96
  97         for (i=0; NT_STATUS_V(pam_to_nt_status_map[i].ntstatus); i++) {
  98                 if (pam_error == pam_to_nt_status_map[i].pam_code)
  99                         return pam_to_nt_status_map[i].ntstatus;
 100         }
 101         return NT_STATUS_UNSUCCESSFUL;
 102 }
 103
 104 /*****************************************************************************
 105 convert an NT status32 code to a PAM error
 106  *****************************************************************************/
 107 int nt_status_to_pam(NTSTATUS nt_status)
 108 {
 109         int i;
 110         if NT_STATUS_IS_OK(nt_status) return PAM_SUCCESS;
 111
 112         for (i=0; NT_STATUS_V(nt_status_to_pam_map[i].ntstatus); i++) {
 113                 if (NT_STATUS_EQUAL(nt_status,nt_status_to_pam_map[i].ntstatus))
 114                         return nt_status_to_pam_map[i].pam_code;
 115         }
 116         return PAM_SYSTEM_ERR;
 117 }
 118
 119 #else
 120
 121 /*****************************************************************************
 122 convert a PAM error to a NT status32 code
 123  *****************************************************************************/
 124 NTSTATUS pam_to_nt_status(int pam_error)
 125 {
 126         if (pam_error == 0) return NT_STATUS_OK;
 127         return NT_STATUS_UNSUCCESSFUL;
 128 }
 129
 130 /*****************************************************************************
 131 convert an NT status32 code to a PAM error
 132  *****************************************************************************/
 133 int nt_status_to_pam(NTSTATUS nt_status)
 134 {
 135         if (NT_STATUS_EQUAL(nt_status, NT_STATUS_OK)) return 0;
 136         return 4; /* PAM_SYSTEM_ERR */
 137 }
 138
 139 #endif
 140