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
245
246
247
248
249
250
251
|
/*
* QEMU crypto TLS credential support
*
* Copyright (c) 2015 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*/
#include "crypto/tlscredspriv.h"
#include "trace.h"
#define DH_BITS 2048
#ifdef CONFIG_GNUTLS
int
qcrypto_tls_creds_get_dh_params_file(QCryptoTLSCreds *creds,
const char *filename,
gnutls_dh_params_t *dh_params,
Error **errp)
{
int ret;
trace_qcrypto_tls_creds_load_dh(creds, filename ? filename : "<generated>");
if (filename == NULL) {
ret = gnutls_dh_params_init(dh_params);
if (ret < 0) {
error_setg(errp, "Unable to initialize DH parameters: %s",
gnutls_strerror(ret));
return -1;
}
ret = gnutls_dh_params_generate2(*dh_params, DH_BITS);
if (ret < 0) {
gnutls_dh_params_deinit(*dh_params);
*dh_params = NULL;
error_setg(errp, "Unable to generate DH parameters: %s",
gnutls_strerror(ret));
return -1;
}
} else {
GError *gerr = NULL;
gchar *contents;
gsize len;
gnutls_datum_t data;
if (!g_file_get_contents(filename,
&contents,
&len,
&gerr)) {
error_setg(errp, "%s", gerr->message);
g_error_free(gerr);
return -1;
}
data.data = (unsigned char *)contents;
data.size = len;
ret = gnutls_dh_params_init(dh_params);
if (ret < 0) {
g_free(contents);
error_setg(errp, "Unable to initialize DH parameters: %s",
gnutls_strerror(ret));
return -1;
}
ret = gnutls_dh_params_import_pkcs3(*dh_params,
&data,
GNUTLS_X509_FMT_PEM);
g_free(contents);
if (ret < 0) {
gnutls_dh_params_deinit(*dh_params);
*dh_params = NULL;
error_setg(errp, "Unable to load DH parameters from %s: %s",
filename, gnutls_strerror(ret));
return -1;
}
}
return 0;
}
int
qcrypto_tls_creds_get_path(QCryptoTLSCreds *creds,
const char *filename,
bool required,
char **cred,
Error **errp)
{
struct stat sb;
int ret = -1;
if (!creds->dir) {
if (required) {
error_setg(errp, "Missing 'dir' property value");
return -1;
} else {
return 0;
}
}
*cred = g_strdup_printf("%s/%s", creds->dir, filename);
if (stat(*cred, &sb) < 0) {
if (errno == ENOENT && !required) {
ret = 0;
} else {
error_setg_errno(errp, errno,
"Unable to access credentials %s",
*cred);
}
g_free(*cred);
*cred = NULL;
goto cleanup;
}
trace_qcrypto_tls_creds_get_path(creds, filename,
*cred ? *cred : "<none>");
ret = 0;
cleanup:
return ret;
}
#endif /* ! CONFIG_GNUTLS */
static void
qcrypto_tls_creds_prop_set_verify(Object *obj,
bool value,
Error **errp G_GNUC_UNUSED)
{
QCryptoTLSCreds *creds = QCRYPTO_TLS_CREDS(obj);
creds->verifyPeer = value;
}
static bool
qcrypto_tls_creds_prop_get_verify(Object *obj,
Error **errp G_GNUC_UNUSED)
{
QCryptoTLSCreds *creds = QCRYPTO_TLS_CREDS(obj);
return creds->verifyPeer;
}
static void
qcrypto_tls_creds_prop_set_dir(Object *obj,
const char *value,
Error **errp G_GNUC_UNUSED)
{
QCryptoTLSCreds *creds = QCRYPTO_TLS_CREDS(obj);
creds->dir = g_strdup(value);
}
static char *
qcrypto_tls_creds_prop_get_dir(Object *obj,
Error **errp G_GNUC_UNUSED)
{
QCryptoTLSCreds *creds = QCRYPTO_TLS_CREDS(obj);
return g_strdup(creds->dir);
}
static void
qcrypto_tls_creds_prop_set_endpoint(Object *obj,
int value,
Error **errp G_GNUC_UNUSED)
{
QCryptoTLSCreds *creds = QCRYPTO_TLS_CREDS(obj);
creds->endpoint = value;
}
static int
qcrypto_tls_creds_prop_get_endpoint(Object *obj,
Error **errp G_GNUC_UNUSED)
{
QCryptoTLSCreds *creds = QCRYPTO_TLS_CREDS(obj);
return creds->endpoint;
}
static void
qcrypto_tls_creds_init(Object *obj)
{
QCryptoTLSCreds *creds = QCRYPTO_TLS_CREDS(obj);
creds->verifyPeer = true;
object_property_add_bool(obj, "verify-peer",
qcrypto_tls_creds_prop_get_verify,
qcrypto_tls_creds_prop_set_verify,
NULL);
object_property_add_str(obj, "dir",
qcrypto_tls_creds_prop_get_dir,
qcrypto_tls_creds_prop_set_dir,
NULL);
object_property_add_enum(obj, "endpoint",
"QCryptoTLSCredsEndpoint",
QCryptoTLSCredsEndpoint_lookup,
qcrypto_tls_creds_prop_get_endpoint,
qcrypto_tls_creds_prop_set_endpoint,
NULL);
}
static void
qcrypto_tls_creds_finalize(Object *obj)
{
QCryptoTLSCreds *creds = QCRYPTO_TLS_CREDS(obj);
g_free(creds->dir);
}
static const TypeInfo qcrypto_tls_creds_info = {
.parent = TYPE_OBJECT,
.name = TYPE_QCRYPTO_TLS_CREDS,
.instance_size = sizeof(QCryptoTLSCreds),
.instance_init = qcrypto_tls_creds_init,
.instance_finalize = qcrypto_tls_creds_finalize,
.class_size = sizeof(QCryptoTLSCredsClass),
.abstract = true,
};
static void
qcrypto_tls_creds_register_types(void)
{
type_register_static(&qcrypto_tls_creds_info);
}
type_init(qcrypto_tls_creds_register_types);
|
