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
|
/*
Unix SMB/CIFS implementation.
simple kerberos5 routines for active directory
Copyright (C) Andrew Tridgell 2001
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#ifndef ENCTYPE_ARCFOUR_HMAC
#define ENCTYPE_ARCFOUR_HMAC 0x0017
#endif
#ifdef HAVE_KRB5
/*
we can't use krb5_mk_req because w2k wants the service to be in a particular format
*/
static krb5_error_code krb5_mk_req2(krb5_context context,
krb5_auth_context *auth_context,
const krb5_flags ap_req_options,
const char *principal,
krb5_ccache ccache,
krb5_data *outbuf)
{
krb5_error_code retval;
krb5_principal server;
krb5_creds * credsp;
krb5_creds creds;
krb5_data in_data;
retval = krb5_parse_name(context, principal, &server);
if (retval) {
DEBUG(1,("Failed to parse principal %s\n", principal));
return retval;
}
/* obtain ticket & session key */
memset((char *)&creds, 0, sizeof(creds));
if ((retval = krb5_copy_principal(context, server, &creds.server))) {
DEBUG(1,("krb5_copy_principal failed (%s)\n",
error_message(retval)));
goto cleanup_princ;
}
if ((retval = krb5_cc_get_principal(context, ccache, &creds.client))) {
DEBUG(1,("krb5_cc_get_principal failed (%s)\n",
error_message(retval)));
goto cleanup_creds;
}
if ((retval = krb5_get_credentials(context, 0,
ccache, &creds, &credsp))) {
DEBUG(1,("krb5_get_credentials failed for %s (%s)\n",
principal, error_message(retval)));
goto cleanup_creds;
}
in_data.length = 0;
retval = krb5_mk_req_extended(context, auth_context, ap_req_options,
&in_data, credsp, outbuf);
if (retval) {
DEBUG(1,("krb5_mk_req_extended failed (%s)\n",
error_message(retval)));
}
krb5_free_creds(context, credsp);
cleanup_creds:
krb5_free_cred_contents(context, &creds);
cleanup_princ:
krb5_free_principal(context, server);
return retval;
}
/*
get a kerberos5 ticket for the given service
*/
DATA_BLOB krb5_get_ticket(char *principal)
{
krb5_error_code retval;
krb5_data packet;
krb5_ccache ccdef;
krb5_context context;
krb5_auth_context auth_context = NULL;
DATA_BLOB ret;
krb5_enctype enc_types[] = {ENCTYPE_ARCFOUR_HMAC,
ENCTYPE_DES_CBC_MD5,
ENCTYPE_NULL};
retval = krb5_init_context(&context);
if (retval) {
DEBUG(1,("krb5_init_context failed (%s)\n",
error_message(retval)));
goto failed;
}
if ((retval = krb5_cc_default(context, &ccdef))) {
DEBUG(1,("krb5_cc_default failed (%s)\n",
error_message(retval)));
goto failed;
}
if ((retval = krb5_set_default_tgs_ktypes(context, enc_types))) {
DEBUG(1,("krb5_set_default_tgs_ktypes failed (%s)\n",
error_message(retval)));
goto failed;
}
if ((retval = krb5_mk_req2(context,
&auth_context,
0,
principal,
ccdef, &packet))) {
goto failed;
}
ret = data_blob(packet.data, packet.length);
/* Hmm, heimdal dooesn't have this - what's the correct call? */
/* krb5_free_data_contents(context, &packet); */
krb5_free_context(context);
return ret;
failed:
krb5_free_context(context);
return data_blob(NULL, 0);
}
#else /* HAVE_KRB5 */
/* this saves a few linking headaches */
DATA_BLOB krb5_get_ticket(char *principal)
{
DEBUG(0,("NO KERBEROS SUPPORT\n"));
return data_blob(NULL, 0);
}
#endif
|
