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
|
/*
Unix SMB/CIFS implementation.
kerberos utility library
Copyright (C) Andrew Tridgell 2001
Copyright (C) Remus Koos 2001
Copyright (C) Nalin Dahyabhai 2004.
Copyright (C) Jeremy Allison 2004.
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
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 "system/kerberos.h"
#include "auth/kerberos/kerberos.h"
#ifdef HAVE_KRB5
/*
simulate a kinit, putting the tgt in the given credentials cache.
Orignally by remus@snapserver.com
This version is built to use a keyblock, rather than needing the
original password.
The impersonate_principal is the principal if NULL, or the principal to impersonate
The target_service defaults to the krbtgt if NULL, but could be kpasswd/realm or the local service (if we are doing s4u2self)
*/
krb5_error_code kerberos_kinit_keyblock_cc(krb5_context ctx, krb5_ccache cc,
krb5_principal principal, krb5_keyblock *keyblock,
const char *target_service,
krb5_get_init_creds_opt *krb_options,
time_t *expire_time, time_t *kdc_time)
{
krb5_error_code code = 0;
krb5_creds my_creds;
if ((code = krb5_get_init_creds_keyblock(ctx, &my_creds, principal, keyblock,
0, target_service, krb_options))) {
return code;
}
if ((code = krb5_cc_initialize(ctx, cc, principal))) {
krb5_free_cred_contents(ctx, &my_creds);
return code;
}
if ((code = krb5_cc_store_cred(ctx, cc, &my_creds))) {
krb5_free_cred_contents(ctx, &my_creds);
return code;
}
if (expire_time) {
*expire_time = (time_t) my_creds.times.endtime;
}
if (kdc_time) {
*kdc_time = (time_t) my_creds.times.starttime;
}
krb5_free_cred_contents(ctx, &my_creds);
return 0;
}
/*
simulate a kinit, putting the tgt in the given credentials cache.
Orignally by remus@snapserver.com
The impersonate_principal is the principal if NULL, or the principal to impersonate
The target_service defaults to the krbtgt if NULL, but could be kpasswd/realm or the local service (if we are doing s4u2self)
*/
krb5_error_code kerberos_kinit_password_cc(krb5_context ctx, krb5_ccache cc,
krb5_principal principal, const char *password,
krb5_principal impersonate_principal, const char *target_service,
krb5_get_init_creds_opt *krb_options,
time_t *expire_time, time_t *kdc_time)
{
krb5_error_code code = 0;
krb5_creds my_creds;
krb5_creds *impersonate_creds;
krb5_get_creds_opt options;
/* If we are not impersonating, then get this ticket for the
* target service, otherwise a krbtgt, and get the next ticket
* for the target */
if ((code = krb5_get_init_creds_password(ctx, &my_creds, principal, password,
NULL, NULL,
0,
impersonate_principal ? NULL : target_service,
krb_options))) {
return code;
}
if ((code = krb5_cc_initialize(ctx, cc, principal))) {
krb5_free_cred_contents(ctx, &my_creds);
return code;
}
if ((code = krb5_cc_store_cred(ctx, cc, &my_creds))) {
krb5_free_cred_contents(ctx, &my_creds);
return code;
}
if (expire_time) {
*expire_time = (time_t) my_creds.times.endtime;
}
if (kdc_time) {
*kdc_time = (time_t) my_creds.times.starttime;
}
krb5_free_cred_contents(ctx, &my_creds);
if (code == 0 && impersonate_principal) {
krb5_principal target_princ;
if ((code = krb5_get_creds_opt_alloc(ctx, &options))) {
return code;
}
if ((code = krb5_get_creds_opt_set_impersonate(ctx, options, impersonate_principal))) {
krb5_get_creds_opt_free(ctx, options);
return code;
}
if ((code = krb5_parse_name(ctx, target_service, &target_princ))) {
krb5_get_creds_opt_free(ctx, options);
return code;
}
if ((code = krb5_principal_set_realm(ctx, target_princ, krb5_principal_get_realm(ctx, principal)))) {
krb5_get_creds_opt_free(ctx, options);
krb5_free_principal(ctx, target_princ);
return code;
}
if ((code = krb5_get_creds(ctx, options, cc, target_princ, &impersonate_creds))) {
krb5_free_principal(ctx, target_princ);
krb5_get_creds_opt_free(ctx, options);
return code;
}
krb5_free_principal(ctx, target_princ);
code = krb5_cc_store_cred(ctx, cc, impersonate_creds);
krb5_get_creds_opt_free(ctx, options);
krb5_free_creds(ctx, impersonate_creds);
}
return 0;
}
#endif
|
