pam: share pam errors in a common location.

Guenther

3 files changed, 176 insertions, 0 deletions

diff --git a/libcli/auth/pam_errors.c b/libcli/auth/pam_errors.c
new file mode 100644
index 0000000000..978f8ffdde
--- /dev/null
+++ b/libcli/auth/pam_errors.c
@@ -0,0 +1,139 @@
+/*
+ *  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 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 "../libcli/auth/pam_errors.h"
+
+#ifdef WITH_PAM
+#if defined(HAVE_SECURITY_PAM_APPL_H)
+#include <security/pam_appl.h>
+#elif defined(HAVE_PAM_PAM_APPL_H)
+#include <pam/pam_appl.h>
+#endif
+
+#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_PASSWORD_RESTRICTION, PAM_PERM_DENIED},
+	{NT_STATUS_BACKUP_CONTROLLER, PAM_AUTHINFO_UNAVAIL},
+	{NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND, PAM_AUTHINFO_UNAVAIL},
+	{NT_STATUS_NO_LOGON_SERVERS, PAM_AUTHINFO_UNAVAIL},
+	{NT_STATUS_INVALID_WORKSTATION, PAM_PERM_DENIED},
+	{NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT, PAM_AUTHINFO_UNAVAIL},
+	{NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT, PAM_AUTHINFO_UNAVAIL},
+	{NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT, PAM_AUTHINFO_UNAVAIL},
+	{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
diff --git a/libcli/auth/pam_errors.h b/libcli/auth/pam_errors.h
new file mode 100644
index 0000000000..128910fa71
--- /dev/null
+++ b/libcli/auth/pam_errors.h
@@ -0,0 +1,33 @@
+/*
+ *  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 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/>.
+ */
+
+#ifndef __LIBCLI_AUTH_PAM_ERRORS_H__
+#define __LIBCLI_AUTH_PAM_ERRORS_H__
+
+/*****************************************************************************
+convert a PAM error to a NT status32 code
+ *****************************************************************************/
+NTSTATUS pam_to_nt_status(int pam_error);
+
+/*****************************************************************************
+convert an NT status32 code to a PAM error
+ *****************************************************************************/
+int nt_status_to_pam(NTSTATUS nt_status);
+
+#endif /* __LIBCLI_AUTH_PAM_ERRORS_H__ */
diff --git a/libcli/auth/wscript_build b/libcli/auth/wscript_build
index 26b7438aa4..c47c6f79a1 100644
--- a/libcli/auth/wscript_build
+++ b/libcli/auth/wscript_build
@@ -24,3 +24,7 @@ bld.SAMBA_SUBSYSTEM('COMMON_SCHANNELDB',
 	deps='tdb-wrap'
 	)
 
+
+bld.SAMBA_SUBSYSTEM('PAM_ERRORS',
+	source='pam_errors.c'
+	)