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, see <http://www.gnu.org/licenses/>.
18 */
19
20#include "includes.h"
21
22#ifdef WITH_PAM
23#if defined(HAVE_SECURITY_PAM_APPL_H)
24#include <security/pam_appl.h>
25#elif defined(HAVE_PAM_PAM_APPL_H)
26#include <pam/pam_appl.h>
27#endif
28
29#if defined(PAM_AUTHTOK_RECOVERY_ERR) && !defined(PAM_AUTHTOK_RECOVER_ERR)
30#define PAM_AUTHTOK_RECOVER_ERR PAM_AUTHTOK_RECOVERY_ERR
31#endif
32
33/* PAM -> NT_STATUS map */
34static const struct {
35	int pam_code;
36	NTSTATUS ntstatus;
37} pam_to_nt_status_map[] = {
38	{PAM_OPEN_ERR, NT_STATUS_UNSUCCESSFUL},
39	{PAM_SYMBOL_ERR, NT_STATUS_UNSUCCESSFUL},
40	{PAM_SERVICE_ERR, NT_STATUS_UNSUCCESSFUL},
41	{PAM_SYSTEM_ERR,  NT_STATUS_UNSUCCESSFUL},
42	{PAM_BUF_ERR, NT_STATUS_NO_MEMORY},
43	{PAM_PERM_DENIED, NT_STATUS_ACCESS_DENIED},
44	{PAM_AUTH_ERR, NT_STATUS_WRONG_PASSWORD},
45	{PAM_CRED_INSUFFICIENT, NT_STATUS_INSUFFICIENT_LOGON_INFO}, /* FIXME:  Is this correct? */
46	{PAM_AUTHINFO_UNAVAIL, NT_STATUS_LOGON_FAILURE},
47	{PAM_USER_UNKNOWN, NT_STATUS_NO_SUCH_USER},
48	{PAM_MAXTRIES, NT_STATUS_REMOTE_SESSION_LIMIT}, /* FIXME:  Is this correct? */
49	{PAM_NEW_AUTHTOK_REQD, NT_STATUS_PASSWORD_MUST_CHANGE},
50	{PAM_ACCT_EXPIRED, NT_STATUS_ACCOUNT_EXPIRED},
51	{PAM_SESSION_ERR, NT_STATUS_INSUFFICIENT_RESOURCES},
52	{PAM_CRED_UNAVAIL, NT_STATUS_NO_TOKEN},  /* FIXME:  Is this correct? */
53	{PAM_CRED_EXPIRED, NT_STATUS_PASSWORD_EXPIRED},  /* FIXME:  Is this correct? */
54	{PAM_CRED_ERR, NT_STATUS_UNSUCCESSFUL},
55	{PAM_AUTHTOK_ERR, NT_STATUS_UNSUCCESSFUL},
56#ifdef PAM_AUTHTOK_RECOVER_ERR
57	{PAM_AUTHTOK_RECOVER_ERR, NT_STATUS_UNSUCCESSFUL},
58#endif
59	{PAM_AUTHTOK_EXPIRED, NT_STATUS_PASSWORD_EXPIRED},
60	{PAM_SUCCESS, NT_STATUS_OK}
61};
62
63/* NT_STATUS -> PAM map */
64static const struct {
65	NTSTATUS ntstatus;
66	int pam_code;
67} nt_status_to_pam_map[] = {
68	{NT_STATUS_UNSUCCESSFUL, PAM_SYSTEM_ERR},
69	{NT_STATUS_NO_SUCH_USER, PAM_USER_UNKNOWN},
70	{NT_STATUS_WRONG_PASSWORD, PAM_AUTH_ERR},
71	{NT_STATUS_LOGON_FAILURE, PAM_AUTH_ERR},
72	{NT_STATUS_ACCOUNT_EXPIRED, PAM_ACCT_EXPIRED},
73	{NT_STATUS_PASSWORD_EXPIRED, PAM_AUTHTOK_EXPIRED},
74	{NT_STATUS_PASSWORD_MUST_CHANGE, PAM_NEW_AUTHTOK_REQD},
75	{NT_STATUS_ACCOUNT_LOCKED_OUT, PAM_MAXTRIES},
76	{NT_STATUS_NO_MEMORY, PAM_BUF_ERR},
77	{NT_STATUS_PASSWORD_RESTRICTION, PAM_PERM_DENIED},
78	{NT_STATUS_BACKUP_CONTROLLER, PAM_AUTHINFO_UNAVAIL},
79	{NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND, PAM_AUTHINFO_UNAVAIL},
80	{NT_STATUS_NO_LOGON_SERVERS, PAM_AUTHINFO_UNAVAIL},
81	{NT_STATUS_INVALID_WORKSTATION, PAM_PERM_DENIED},
82	{NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT, PAM_AUTHINFO_UNAVAIL},
83	{NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT, PAM_AUTHINFO_UNAVAIL},
84	{NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT, PAM_AUTHINFO_UNAVAIL},
85	{NT_STATUS_OK, PAM_SUCCESS}
86};
87
88/*****************************************************************************
89convert a PAM error to a NT status32 code
90 *****************************************************************************/
91NTSTATUS pam_to_nt_status(int pam_error)
92{
93	int i;
94	if (pam_error == 0) return NT_STATUS_OK;
95
96	for (i=0; NT_STATUS_V(pam_to_nt_status_map[i].ntstatus); i++) {
97		if (pam_error == pam_to_nt_status_map[i].pam_code)
98			return pam_to_nt_status_map[i].ntstatus;
99	}
100	return NT_STATUS_UNSUCCESSFUL;
101}
102
103/*****************************************************************************
104convert an NT status32 code to a PAM error
105 *****************************************************************************/
106int nt_status_to_pam(NTSTATUS nt_status)
107{
108	int i;
109	if NT_STATUS_IS_OK(nt_status) return PAM_SUCCESS;
110
111	for (i=0; NT_STATUS_V(nt_status_to_pam_map[i].ntstatus); i++) {
112		if (NT_STATUS_EQUAL(nt_status,nt_status_to_pam_map[i].ntstatus))
113			return nt_status_to_pam_map[i].pam_code;
114	}
115	return PAM_SYSTEM_ERR;
116}
117
118#else
119
120/*****************************************************************************
121convert a PAM error to a NT status32 code
122 *****************************************************************************/
123NTSTATUS pam_to_nt_status(int pam_error)
124{
125	if (pam_error == 0) return NT_STATUS_OK;
126	return NT_STATUS_UNSUCCESSFUL;
127}
128
129/*****************************************************************************
130convert an NT status32 code to a PAM error
131 *****************************************************************************/
132int nt_status_to_pam(NTSTATUS nt_status)
133{
134	if (NT_STATUS_EQUAL(nt_status, NT_STATUS_OK)) return 0;
135	return 4; /* PAM_SYSTEM_ERR */
136}
137
138#endif
139
140