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 */
31static const 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_NO_MEMORY},
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 */
61static const 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_EXPIRED, PAM_AUTHTOK_EXPIRED},
71	{NT_STATUS_PASSWORD_MUST_CHANGE, PAM_NEW_AUTHTOK_REQD},
72	{NT_STATUS_ACCOUNT_LOCKED_OUT, PAM_MAXTRIES},
73	{NT_STATUS_NO_MEMORY, PAM_BUF_ERR},
74	{NT_STATUS_PASSWORD_RESTRICTION, PAM_PERM_DENIED},
75	{NT_STATUS_BACKUP_CONTROLLER, PAM_AUTHINFO_UNAVAIL},
76	{NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND, PAM_AUTHINFO_UNAVAIL},
77	{NT_STATUS_NO_LOGON_SERVERS, PAM_AUTHINFO_UNAVAIL},
78	{NT_STATUS_INVALID_WORKSTATION, PAM_PERM_DENIED},
79	{NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT, PAM_AUTHINFO_UNAVAIL},
80	{NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT, PAM_AUTHINFO_UNAVAIL},
81	{NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT, PAM_AUTHINFO_UNAVAIL},
82	{NT_STATUS_OK, PAM_SUCCESS}
83};
84
85/*****************************************************************************
86convert a PAM error to a NT status32 code
87 *****************************************************************************/
88NTSTATUS pam_to_nt_status(int pam_error)
89{
90	int i;
91	if (pam_error == 0) return NT_STATUS_OK;
92
93	for (i=0; NT_STATUS_V(pam_to_nt_status_map[i].ntstatus); i++) {
94		if (pam_error == pam_to_nt_status_map[i].pam_code)
95			return pam_to_nt_status_map[i].ntstatus;
96	}
97	return NT_STATUS_UNSUCCESSFUL;
98}
99
100/*****************************************************************************
101convert an NT status32 code to a PAM error
102 *****************************************************************************/
103int nt_status_to_pam(NTSTATUS nt_status)
104{
105	int i;
106	if NT_STATUS_IS_OK(nt_status) return PAM_SUCCESS;
107
108	for (i=0; NT_STATUS_V(nt_status_to_pam_map[i].ntstatus); i++) {
109		if (NT_STATUS_EQUAL(nt_status,nt_status_to_pam_map[i].ntstatus))
110			return nt_status_to_pam_map[i].pam_code;
111	}
112	return PAM_SYSTEM_ERR;
113}
114
115#else
116
117/*****************************************************************************
118convert a PAM error to a NT status32 code
119 *****************************************************************************/
120NTSTATUS pam_to_nt_status(int pam_error)
121{
122	if (pam_error == 0) return NT_STATUS_OK;
123	return NT_STATUS_UNSUCCESSFUL;
124}
125
126/*****************************************************************************
127convert an NT status32 code to a PAM error
128 *****************************************************************************/
129int nt_status_to_pam(NTSTATUS nt_status)
130{
131	if (NT_STATUS_EQUAL(nt_status, NT_STATUS_OK)) return 0;
132	return 4; /* PAM_SYSTEM_ERR */
133}
134
135#endif
136
137