2 Unix SMB/CIFS implementation.
4 PAC Glue between Samba and the KDC
6 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005-2009
7 Copyright (C) Simo Sorce <idra@samba.org> 2010
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
25 #include "../libds/common/flags.h"
26 #include "auth/auth.h"
28 #include "param/param.h"
29 #include "kdc/pac-glue.h"
31 /* Given the right private pointer from hdb_samba4, get a PAC from the attached ldb messages */
32 static krb5_error_code
samba_wdc_get_pac(void *priv
, krb5_context context
,
33 struct hdb_entry_ex
*client
,
41 mem_ctx
= talloc_named(client
->ctx
, 0, "samba_get_pac context");
46 nt_status
= samba_kdc_get_pac_blob(mem_ctx
, client
, &pac_blob
);
47 if (!NT_STATUS_IS_OK(nt_status
)) {
52 ret
= samba_make_krb5_pac(context
, pac_blob
, pac
);
58 /* Resign (and reform, including possibly new groups) a PAC */
60 static krb5_error_code
samba_wdc_reget_pac(void *priv
, krb5_context context
,
61 const krb5_principal client_principal
,
62 struct hdb_entry_ex
*client
,
63 struct hdb_entry_ex
*server
, krb5_pac
*pac
)
65 struct hdb_samba4_private
*p
= talloc_get_type(server
->ctx
, struct hdb_samba4_private
);
66 TALLOC_CTX
*mem_ctx
= talloc_named(p
, 0, "samba_kdc_reget_pac context");
75 pac_blob
= talloc_zero(mem_ctx
, DATA_BLOB
);
81 /* The user account may be set not to want the PAC */
82 if (!samba_princ_needs_pac(server
)) {
87 nt_status
= samba_kdc_update_pac_blob(mem_ctx
, context
,
90 if (!NT_STATUS_IS_OK(nt_status
)) {
91 DEBUG(0, ("Building PAC failed: %s\n",
92 nt_errstr(nt_status
)));
97 /* We now completly regenerate this pac */
98 krb5_pac_free(context
, *pac
);
100 ret
= samba_make_krb5_pac(context
, pac_blob
, pac
);
102 talloc_free(mem_ctx
);
106 /* Given an hdb entry (and in particular it's private member), consult
107 * the account_ok routine in auth/auth_sam.c for consistancy */
108 static krb5_error_code
samba_wdc_check_client_access(void *priv
,
109 krb5_context context
,
110 krb5_kdc_configuration
*config
,
111 hdb_entry_ex
*client_ex
, const char *client_name
,
112 hdb_entry_ex
*server_ex
, const char *server_name
,
119 struct hdb_samba4_private
*p
;
120 char *workstation
= NULL
;
121 HostAddresses
*addresses
= req
->req_body
.addresses
;
123 bool password_change
;
125 tmp_ctx
= talloc_new(client_ex
->ctx
);
126 p
= talloc_get_type(client_ex
->ctx
, struct hdb_samba4_private
);
133 for (i
=0; i
< addresses
->len
; i
++) {
134 if (addresses
->val
->addr_type
== KRB5_ADDRESS_NETBIOS
) {
135 workstation
= talloc_strndup(tmp_ctx
, addresses
->val
->address
.data
, MIN(addresses
->val
->address
.length
, 15));
143 /* Strip space padding */
145 i
= MIN(strlen(workstation
), 15);
146 for (; i
> 0 && workstation
[i
- 1] == ' '; i
--) {
147 workstation
[i
- 1] = '\0';
151 password_change
= (server_ex
&& server_ex
->entry
.flags
.change_pw
);
153 /* we allow all kinds of trusts here */
154 nt_status
= authsam_account_ok(tmp_ctx
,
156 MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT
| MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT
,
160 client_name
, true, password_change
);
162 if (NT_STATUS_IS_OK(nt_status
)) {
163 /* Now do the standard Heimdal check */
164 ret
= kdc_check_flags(context
, config
,
165 client_ex
, client_name
,
166 server_ex
, server_name
,
167 req
->msg_type
== krb_as_req
);
169 if (NT_STATUS_EQUAL(nt_status
, NT_STATUS_PASSWORD_MUST_CHANGE
))
170 ret
= KRB5KDC_ERR_KEY_EXPIRED
;
171 else if (NT_STATUS_EQUAL(nt_status
, NT_STATUS_PASSWORD_EXPIRED
))
172 ret
= KRB5KDC_ERR_KEY_EXPIRED
;
173 else if (NT_STATUS_EQUAL(nt_status
, NT_STATUS_ACCOUNT_EXPIRED
))
174 ret
= KRB5KDC_ERR_CLIENT_REVOKED
;
175 else if (NT_STATUS_EQUAL(nt_status
, NT_STATUS_ACCOUNT_DISABLED
))
176 ret
= KRB5KDC_ERR_CLIENT_REVOKED
;
177 else if (NT_STATUS_EQUAL(nt_status
, NT_STATUS_INVALID_LOGON_HOURS
))
178 ret
= KRB5KDC_ERR_CLIENT_REVOKED
;
179 else if (NT_STATUS_EQUAL(nt_status
, NT_STATUS_ACCOUNT_LOCKED_OUT
))
180 ret
= KRB5KDC_ERR_CLIENT_REVOKED
;
181 else if (NT_STATUS_EQUAL(nt_status
, NT_STATUS_INVALID_WORKSTATION
))
182 ret
= KRB5KDC_ERR_POLICY
;
184 ret
= KRB5KDC_ERR_POLICY
;
186 samba_kdc_build_edata_reply(tmp_ctx
, e_data
, nt_status
);
192 static krb5_error_code
samba_wdc_plugin_init(krb5_context context
, void **ptr
)
198 static void samba_wdc_plugin_fini(void *ptr
)
203 struct krb5plugin_windc_ftable windc_plugin_table
= {
204 .minor_version
= KRB5_WINDC_PLUGING_MINOR
,
205 .init
= samba_wdc_plugin_init
,
206 .fini
= samba_wdc_plugin_fini
,
207 .pac_generate
= samba_wdc_get_pac
,
208 .pac_verify
= samba_wdc_reget_pac
,
209 .client_access
= samba_wdc_check_client_access
,