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
|
/*
* Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "gssapi_locl.h"
RCSID("$Id: encapsulate.c,v 1.6.6.1 2003/09/18 21:47:44 lha Exp $");
void
gssapi_krb5_encap_length (size_t data_len,
size_t *len,
size_t *total_len)
{
size_t len_len;
*len = 1 + 1 + GSS_KRB5_MECHANISM->length + 2 + data_len;
len_len = length_len(*len);
*total_len = 1 + len_len + *len;
}
u_char *
gssapi_krb5_make_header (u_char *p,
size_t len,
u_char *type)
{
int e;
size_t len_len, foo;
*p++ = 0x60;
len_len = length_len(len);
e = der_put_length (p + len_len - 1, len_len, len, &foo);
if(e || foo != len_len)
abort ();
p += len_len;
*p++ = 0x06;
*p++ = GSS_KRB5_MECHANISM->length;
memcpy (p, GSS_KRB5_MECHANISM->elements, GSS_KRB5_MECHANISM->length);
p += GSS_KRB5_MECHANISM->length;
memcpy (p, type, 2);
p += 2;
return p;
}
u_char *
_gssapi_make_mech_header(u_char *p,
size_t len)
{
int e;
size_t len_len, foo;
*p++ = 0x60;
len_len = length_len(len);
e = der_put_length (p + len_len - 1, len_len, len, &foo);
if(e || foo != len_len)
abort ();
p += len_len;
*p++ = 0x06;
*p++ = GSS_KRB5_MECHANISM->length;
memcpy (p, GSS_KRB5_MECHANISM->elements, GSS_KRB5_MECHANISM->length);
p += GSS_KRB5_MECHANISM->length;
return p;
}
/*
* Give it a krb5_data and it will encapsulate with extra GSS-API wrappings.
*/
OM_uint32
gssapi_krb5_encapsulate(
OM_uint32 *minor_status,
const krb5_data *in_data,
gss_buffer_t output_token,
u_char *type
)
{
size_t len, outer_len;
u_char *p;
gssapi_krb5_encap_length (in_data->length, &len, &outer_len);
output_token->length = outer_len;
output_token->value = malloc (outer_len);
if (output_token->value == NULL) {
*minor_status = ENOMEM;
return GSS_S_FAILURE;
}
p = gssapi_krb5_make_header (output_token->value, len, type);
memcpy (p, in_data->data, in_data->length);
return GSS_S_COMPLETE;
}
|
