Initial import

[samba] / source / lib / pam_errors.c

diff --git a/source/lib/pam_errors.c b/source/lib/pam_errors.c
new file mode 100644 (file)
index 0000000..212d383
--- /dev/null
+++ b/source/lib/pam_errors.c
@@ -0,0 +1,128 @@
+/* 
+ *  Unix SMB/CIFS implementation.
+ *  PAM error mapping functions
+ *  Copyright (C) Andrew Bartlett 2002
+ *  
+ *  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 2 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, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "includes.h"
+
+#ifdef WITH_PAM
+#include <security/pam_appl.h>
+
+#if defined(PAM_AUTHTOK_RECOVERY_ERR) && !defined(PAM_AUTHTOK_RECOVER_ERR)
+#define PAM_AUTHTOK_RECOVER_ERR PAM_AUTHTOK_RECOVERY_ERR
+#endif 
+
+/* PAM -> NT_STATUS map */
+static const struct {
+       int pam_code;
+       NTSTATUS ntstatus;
+} pam_to_nt_status_map[] = {
+       {PAM_OPEN_ERR, NT_STATUS_UNSUCCESSFUL},
+       {PAM_SYMBOL_ERR, NT_STATUS_UNSUCCESSFUL},
+       {PAM_SERVICE_ERR, NT_STATUS_UNSUCCESSFUL},
+       {PAM_SYSTEM_ERR,  NT_STATUS_UNSUCCESSFUL},
+       {PAM_BUF_ERR, NT_STATUS_NO_MEMORY},
+       {PAM_PERM_DENIED, NT_STATUS_ACCESS_DENIED},
+       {PAM_AUTH_ERR, NT_STATUS_WRONG_PASSWORD},
+       {PAM_CRED_INSUFFICIENT, NT_STATUS_INSUFFICIENT_LOGON_INFO}, /* FIXME:  Is this correct? */
+       {PAM_AUTHINFO_UNAVAIL, NT_STATUS_LOGON_FAILURE},
+       {PAM_USER_UNKNOWN, NT_STATUS_NO_SUCH_USER},
+       {PAM_MAXTRIES, NT_STATUS_REMOTE_SESSION_LIMIT}, /* FIXME:  Is this correct? */
+       {PAM_NEW_AUTHTOK_REQD, NT_STATUS_PASSWORD_MUST_CHANGE},
+       {PAM_ACCT_EXPIRED, NT_STATUS_ACCOUNT_EXPIRED},
+       {PAM_SESSION_ERR, NT_STATUS_INSUFFICIENT_RESOURCES},
+       {PAM_CRED_UNAVAIL, NT_STATUS_NO_TOKEN},  /* FIXME:  Is this correct? */
+       {PAM_CRED_EXPIRED, NT_STATUS_PASSWORD_EXPIRED},  /* FIXME:  Is this correct? */
+       {PAM_CRED_ERR, NT_STATUS_UNSUCCESSFUL},
+       {PAM_AUTHTOK_ERR, NT_STATUS_UNSUCCESSFUL},
+#ifdef PAM_AUTHTOK_RECOVER_ERR
+       {PAM_AUTHTOK_RECOVER_ERR, NT_STATUS_UNSUCCESSFUL},
+#endif
+       {PAM_AUTHTOK_EXPIRED, NT_STATUS_PASSWORD_EXPIRED},
+       {PAM_SUCCESS, NT_STATUS_OK}
+};
+
+/* NT_STATUS -> PAM map */
+static const struct {
+       NTSTATUS ntstatus;
+       int pam_code;
+} nt_status_to_pam_map[] = {
+       {NT_STATUS_UNSUCCESSFUL, PAM_SYSTEM_ERR},
+       {NT_STATUS_NO_SUCH_USER, PAM_USER_UNKNOWN},
+       {NT_STATUS_WRONG_PASSWORD, PAM_AUTH_ERR},
+       {NT_STATUS_LOGON_FAILURE, PAM_AUTH_ERR},
+       {NT_STATUS_ACCOUNT_EXPIRED, PAM_ACCT_EXPIRED},
+       {NT_STATUS_PASSWORD_EXPIRED, PAM_AUTHTOK_EXPIRED},
+       {NT_STATUS_PASSWORD_MUST_CHANGE, PAM_NEW_AUTHTOK_REQD},
+       {NT_STATUS_ACCOUNT_LOCKED_OUT, PAM_MAXTRIES},
+       {NT_STATUS_NO_MEMORY, PAM_BUF_ERR},
+       {NT_STATUS_OK, PAM_SUCCESS}
+};
+
+/*****************************************************************************
+convert a PAM error to a NT status32 code
+ *****************************************************************************/
+NTSTATUS pam_to_nt_status(int pam_error)
+{
+       int i;
+       if (pam_error == 0) return NT_STATUS_OK;
+       
+       for (i=0; NT_STATUS_V(pam_to_nt_status_map[i].ntstatus); i++) {
+               if (pam_error == pam_to_nt_status_map[i].pam_code)
+                       return pam_to_nt_status_map[i].ntstatus;
+       }
+       return NT_STATUS_UNSUCCESSFUL;
+}
+
+/*****************************************************************************
+convert an NT status32 code to a PAM error
+ *****************************************************************************/
+int nt_status_to_pam(NTSTATUS nt_status)
+{
+       int i;
+       if NT_STATUS_IS_OK(nt_status) return PAM_SUCCESS;
+       
+       for (i=0; NT_STATUS_V(nt_status_to_pam_map[i].ntstatus); i++) {
+               if (NT_STATUS_EQUAL(nt_status,nt_status_to_pam_map[i].ntstatus))
+                       return nt_status_to_pam_map[i].pam_code;
+       }
+       return PAM_SYSTEM_ERR;
+}
+
+#else 
+
+/*****************************************************************************
+convert a PAM error to a NT status32 code
+ *****************************************************************************/
+NTSTATUS pam_to_nt_status(int pam_error)
+{
+       if (pam_error == 0) return NT_STATUS_OK;
+       return NT_STATUS_UNSUCCESSFUL;
+}
+
+/*****************************************************************************
+convert an NT status32 code to a PAM error
+ *****************************************************************************/
+int nt_status_to_pam(NTSTATUS nt_status)
+{
+       if (NT_STATUS_EQUAL(nt_status, NT_STATUS_OK)) return 0;
+       return 4; /* PAM_SYSTEM_ERR */
+}
+
+#endif
+