1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
/*
Unix SMB/CIFS implementation.
kerberos authorization data (PAC) utility library
Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
Copyright (C) Andrew Tridgell 2001
Copyright (C) Luke Howard 2002-2003
Copyright (C) Stefan Metzmacher 2004-2005
Copyright (C) Guenther Deschner 2005,2007,2008
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 "librpc/gen_ndr/ndr_krb5pac.h"
#include "smb_krb5.h"
#include "libads/kerberos_proto.h"
#ifdef HAVE_KRB5
/****************************************************************
Given a username, password and other details, return the
PAC_LOGON_INFO (the structure containing the important user
information such as groups).
****************************************************************/
NTSTATUS kerberos_return_pac(TALLOC_CTX *mem_ctx,
const char *name,
const char *pass,
time_t time_offset,
time_t *expire_time,
time_t *renew_till_time,
const char *cache_name,
bool request_pac,
bool add_netbios_addr,
time_t renewable_time,
const char *impersonate_princ_s,
struct PAC_LOGON_INFO **logon_info)
{
krb5_error_code ret;
NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
DATA_BLOB tkt, ap_rep, sesskey1, sesskey2;
char *client_princ_out = NULL;
const char *auth_princ = NULL;
const char *local_service = NULL;
const char *cc = "MEMORY:kerberos_return_pac";
ZERO_STRUCT(tkt);
ZERO_STRUCT(ap_rep);
ZERO_STRUCT(sesskey1);
ZERO_STRUCT(sesskey2);
if (!name || !pass) {
return NT_STATUS_INVALID_PARAMETER;
}
if (cache_name) {
cc = cache_name;
}
if (!strchr_m(name, '@')) {
auth_princ = talloc_asprintf(mem_ctx, "%s@%s", name,
lp_realm());
} else {
auth_princ = name;
}
NT_STATUS_HAVE_NO_MEMORY(auth_princ);
local_service = talloc_asprintf(mem_ctx, "%s$@%s",
lp_netbios_name(), lp_realm());
NT_STATUS_HAVE_NO_MEMORY(local_service);
ret = kerberos_kinit_password_ext(auth_princ,
pass,
time_offset,
expire_time,
renew_till_time,
cc,
request_pac,
add_netbios_addr,
renewable_time,
&status);
if (ret) {
DEBUG(1,("kinit failed for '%s' with: %s (%d)\n",
auth_princ, error_message(ret), ret));
/* status already set */
goto out;
}
DEBUG(10,("got TGT for %s in %s\n", auth_princ, cc));
if (expire_time) {
DEBUGADD(10,("\tvalid until: %s (%d)\n",
http_timestring(talloc_tos(), *expire_time),
(int)*expire_time));
}
if (renew_till_time) {
DEBUGADD(10,("\trenewable till: %s (%d)\n",
http_timestring(talloc_tos(), *renew_till_time),
(int)*renew_till_time));
}
/* we cannot continue with krb5 when UF_DONT_REQUIRE_PREAUTH is set,
* in that case fallback to NTLM - gd */
if (expire_time && renew_till_time &&
(*expire_time == 0) && (*renew_till_time == 0)) {
return NT_STATUS_INVALID_LOGON_TYPE;
}
ret = cli_krb5_get_ticket(mem_ctx,
local_service,
time_offset,
&tkt,
&sesskey1,
0,
cc,
NULL,
impersonate_princ_s);
if (ret) {
DEBUG(1,("failed to get ticket for %s: %s\n",
local_service, error_message(ret)));
if (impersonate_princ_s) {
DEBUGADD(1,("tried S4U2SELF impersonation as: %s\n",
impersonate_princ_s));
}
status = krb5_to_nt_status(ret);
goto out;
}
status = ads_verify_ticket(mem_ctx,
lp_realm(),
time_offset,
&tkt,
&client_princ_out,
logon_info,
&ap_rep,
&sesskey2,
False);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1,("ads_verify_ticket failed: %s\n",
nt_errstr(status)));
goto out;
}
if (!*logon_info) {
DEBUG(1,("no PAC\n"));
status = NT_STATUS_INVALID_PARAMETER;
goto out;
}
out:
if (cc != cache_name) {
ads_kdestroy(cc);
}
data_blob_free(&tkt);
data_blob_free(&ap_rep);
data_blob_free(&sesskey1);
data_blob_free(&sesskey2);
TALLOC_FREE(client_princ_out);
return status;
}
#endif
|
