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
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
|
/*
* Copyright 1999-2006 University of Chicago
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef GLOBUS_DONT_DOCUMENT_INTERNAL
/**
* @file inquire_cred_by_oid.c
* @author Sam Lang, Sam Meder
*
* $RCSfile: inquire_cred_by_oid.c,v $
* $Revision: 1.10 $
* $Date: 2008/09/10 21:01:06 $
*/
#endif
#include "gssapi_openssl.h"
#include "globus_i_gsi_gss_utils.h"
#include <string.h>
/* Only build if we have the extended GSSAPI */
#ifdef _HAVE_GSI_EXTENDED_GSSAPI
static char *rcsid = "$Id: inquire_cred_by_oid.c,v 1.10 2008/09/10 21:01:06 bester Exp $";
/**
* @name Inquire Cred By OID
* @ingroup globus_gsi_gssapi_extensions
*/
/* @{ */
/**
*
* NOTE: Checks both the cert in the credential and
* the certs in the cert chain for a valid extension
* that matches the desired OID. The first one found
* is used, starting with the endpoint cert, and then
* searching the cert chain.
*
*
* @param minor_status
* @param cred_handle
* @param desired_object
* @param data_set
*
* @return
*/
OM_uint32
GSS_CALLCONV gss_inquire_cred_by_oid(
OM_uint32 * minor_status,
const gss_cred_id_t cred_handle,
const gss_OID desired_object,
gss_buffer_set_t * data_set)
{
OM_uint32 major_status = GSS_S_COMPLETE;
OM_uint32 local_minor_status;
gss_cred_id_desc * cred;
X509_EXTENSION * extension;
X509 * cert = NULL;
STACK_OF(X509) * cert_chain = NULL;
ASN1_OBJECT * desired_asn1_obj;
ASN1_OCTET_STRING * asn1_oct_string;
gss_buffer_desc data_set_buffer;
int chain_index;
int found_index;
globus_result_t local_result = GLOBUS_SUCCESS;
static char * _function_name_ =
"gss_inquire_cred_by_oid";
GLOBUS_I_GSI_GSSAPI_DEBUG_ENTER;
if(minor_status == NULL)
{
major_status = GSS_S_FAILURE;
goto exit;
}
*minor_status = (OM_uint32) GLOBUS_SUCCESS;
cred = (gss_cred_id_desc *) cred_handle;
/* parameter checking goes here */
if(cred_handle == GSS_C_NO_CREDENTIAL)
{
GLOBUS_GSI_GSSAPI_ERROR_RESULT(
minor_status,
GLOBUS_GSI_GSSAPI_ERROR_BAD_ARGUMENT,
(_GGSL("Invalid credential handle passed to function")));
major_status = GSS_S_FAILURE;
goto exit;
}
if(desired_object == GSS_C_NO_OID)
{
GLOBUS_GSI_GSSAPI_ERROR_RESULT(
minor_status,
GLOBUS_GSI_GSSAPI_ERROR_BAD_ARGUMENT,
(_GGSL("Invalid desired object passed to function")));
major_status = GSS_S_FAILURE;
goto exit;
}
if(data_set == NULL)
{
GLOBUS_GSI_GSSAPI_ERROR_RESULT(
minor_status,
GLOBUS_GSI_GSSAPI_ERROR_BAD_ARGUMENT,
(_GGSL("Invalid data_set passed to function")));
major_status = GSS_S_FAILURE;
goto exit;
}
local_result = globus_gsi_cred_get_cert_chain(
((gss_cred_id_desc *)cred_handle)->cred_handle,
&cert_chain);
if(local_result != GLOBUS_SUCCESS)
{
GLOBUS_GSI_GSSAPI_ERROR_CHAIN_RESULT(
minor_status, local_result,
GLOBUS_GSI_GSSAPI_ERROR_WITH_CALLBACK_DATA);
major_status = GSS_S_FAILURE;
cert_chain = NULL;
goto exit;
}
major_status = gss_create_empty_buffer_set(
&local_minor_status,
data_set);
if(GSS_ERROR(major_status))
{
GLOBUS_GSI_GSSAPI_ERROR_CHAIN_RESULT(
minor_status, local_minor_status,
GLOBUS_GSI_GSSAPI_ERROR_WITH_BUFFER);
goto exit;
}
local_result = globus_gsi_cred_get_cert(
((gss_cred_id_desc *)cred_handle)->cred_handle,
&cert);
if(local_result != GLOBUS_SUCCESS)
{
GLOBUS_GSI_GSSAPI_ERROR_CHAIN_RESULT(
minor_status, local_result,
GLOBUS_GSI_GSSAPI_ERROR_WITH_GSI_CREDENTIAL);
major_status = GSS_S_FAILURE;
goto exit;
}
/* create the ASN1_OBJECT from the gss_OID structure */
desired_asn1_obj = ASN1_OBJECT_new();
if(!desired_asn1_obj)
{
GLOBUS_GSI_GSSAPI_OPENSSL_ERROR_RESULT(
minor_status,
GLOBUS_GSI_GSSAPI_ERROR_WITH_OPENSSL,
(_GGSL("Couldn't create ASN1_OBJECT for the desired extension")));
major_status = GSS_S_FAILURE;
goto exit;
}
desired_asn1_obj->length = desired_object->length;
desired_asn1_obj->data = desired_object->elements;
/* check the extensions in the cert first */
chain_index = 0;
found_index = -1;
do
{
data_set_buffer.value = NULL;
data_set_buffer.length = 0;
found_index = X509_get_ext_by_OBJ(cert, desired_asn1_obj, found_index);
if(found_index >= 0)
{
/* no extension with correct OID found */
extension = X509_get_ext(cert, found_index);
if(!extension)
{
GLOBUS_GSI_GSSAPI_OPENSSL_ERROR_RESULT(
minor_status,
GLOBUS_GSI_GSSAPI_ERROR_WITH_OPENSSL,
(_GGSL("Couldn't get extension at index %d "
"from cert in credential."),
found_index));
major_status = GSS_S_FAILURE;
goto exit;
}
asn1_oct_string = X509_EXTENSION_get_data(extension);
if(!asn1_oct_string)
{
GLOBUS_GSI_GSSAPI_OPENSSL_ERROR_RESULT(
minor_status,
GLOBUS_GSI_GSSAPI_ERROR_WITH_OPENSSL,
(_GGSL("Couldn't get cert extension in the form of an "
"ASN1 octet string.")));
major_status = GSS_S_FAILURE;
goto exit;
}
data_set_buffer.value = asn1_oct_string->data;
data_set_buffer.length = asn1_oct_string->length;
major_status = gss_add_buffer_set_member(
&local_minor_status,
&data_set_buffer,
data_set);
if(GSS_ERROR(major_status))
{
GLOBUS_GSI_GSSAPI_ERROR_CHAIN_RESULT(
minor_status, local_minor_status,
GLOBUS_GSI_GSSAPI_ERROR_WITH_BUFFER);
goto exit;
}
}
} while(chain_index < sk_X509_num(cert_chain) &&
(cert = sk_X509_value(cert_chain, chain_index++)));
exit:
if(cert_chain != NULL)
{
sk_X509_pop_free(cert_chain, X509_free);
}
GLOBUS_I_GSI_GSSAPI_DEBUG_EXIT;
return major_status;
}
/* @} */
#endif /* _HAVE_GSI_EXTENDED_GSSAPI */
|
