tests/qapi/doc-good.json: Prepare for qapi-doc Sphinx extension
[qemu.git] / crypto / tlscredsanon.c
1 /*
2 * QEMU crypto TLS anonymous credential support
3 *
4 * Copyright (c) 2015 Red Hat, Inc.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 *
19 */
20
21 #include "qemu/osdep.h"
22 #include "crypto/tlscredsanon.h"
23 #include "tlscredspriv.h"
24 #include "qapi/error.h"
25 #include "qemu/module.h"
26 #include "qom/object_interfaces.h"
27 #include "trace.h"
28
29
30 #ifdef CONFIG_GNUTLS
31
32
33 static int
34 qcrypto_tls_creds_anon_load(QCryptoTLSCredsAnon *creds,
35 Error **errp)
36 {
37 g_autofree char *dhparams = NULL;
38 int ret;
39
40 trace_qcrypto_tls_creds_anon_load(creds,
41 creds->parent_obj.dir ? creds->parent_obj.dir : "<nodir>");
42
43 if (creds->parent_obj.endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
44 if (qcrypto_tls_creds_get_path(&creds->parent_obj,
45 QCRYPTO_TLS_CREDS_DH_PARAMS,
46 false, &dhparams, errp) < 0) {
47 return -1;
48 }
49
50 ret = gnutls_anon_allocate_server_credentials(&creds->data.server);
51 if (ret < 0) {
52 error_setg(errp, "Cannot allocate credentials: %s",
53 gnutls_strerror(ret));
54 return -1;
55 }
56
57 if (qcrypto_tls_creds_get_dh_params_file(&creds->parent_obj, dhparams,
58 &creds->parent_obj.dh_params,
59 errp) < 0) {
60 return -1;
61 }
62
63 gnutls_anon_set_server_dh_params(creds->data.server,
64 creds->parent_obj.dh_params);
65 } else {
66 ret = gnutls_anon_allocate_client_credentials(&creds->data.client);
67 if (ret < 0) {
68 error_setg(errp, "Cannot allocate credentials: %s",
69 gnutls_strerror(ret));
70 return -1;
71 }
72 }
73
74 return 0;
75 }
76
77
78 static void
79 qcrypto_tls_creds_anon_unload(QCryptoTLSCredsAnon *creds)
80 {
81 if (creds->parent_obj.endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) {
82 if (creds->data.client) {
83 gnutls_anon_free_client_credentials(creds->data.client);
84 creds->data.client = NULL;
85 }
86 } else {
87 if (creds->data.server) {
88 gnutls_anon_free_server_credentials(creds->data.server);
89 creds->data.server = NULL;
90 }
91 }
92 if (creds->parent_obj.dh_params) {
93 gnutls_dh_params_deinit(creds->parent_obj.dh_params);
94 creds->parent_obj.dh_params = NULL;
95 }
96 }
97
98 #else /* ! CONFIG_GNUTLS */
99
100
101 static void
102 qcrypto_tls_creds_anon_load(QCryptoTLSCredsAnon *creds G_GNUC_UNUSED,
103 Error **errp)
104 {
105 error_setg(errp, "TLS credentials support requires GNUTLS");
106 }
107
108
109 static void
110 qcrypto_tls_creds_anon_unload(QCryptoTLSCredsAnon *creds G_GNUC_UNUSED)
111 {
112 /* nada */
113 }
114
115
116 #endif /* ! CONFIG_GNUTLS */
117
118
119 static void
120 qcrypto_tls_creds_anon_prop_set_loaded(Object *obj,
121 bool value,
122 Error **errp)
123 {
124 QCryptoTLSCredsAnon *creds = QCRYPTO_TLS_CREDS_ANON(obj);
125
126 if (value) {
127 qcrypto_tls_creds_anon_load(creds, errp);
128 } else {
129 qcrypto_tls_creds_anon_unload(creds);
130 }
131 }
132
133
134 #ifdef CONFIG_GNUTLS
135
136
137 static bool
138 qcrypto_tls_creds_anon_prop_get_loaded(Object *obj,
139 Error **errp G_GNUC_UNUSED)
140 {
141 QCryptoTLSCredsAnon *creds = QCRYPTO_TLS_CREDS_ANON(obj);
142
143 if (creds->parent_obj.endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
144 return creds->data.server != NULL;
145 } else {
146 return creds->data.client != NULL;
147 }
148 }
149
150
151 #else /* ! CONFIG_GNUTLS */
152
153
154 static bool
155 qcrypto_tls_creds_anon_prop_get_loaded(Object *obj G_GNUC_UNUSED,
156 Error **errp G_GNUC_UNUSED)
157 {
158 return false;
159 }
160
161
162 #endif /* ! CONFIG_GNUTLS */
163
164
165 static void
166 qcrypto_tls_creds_anon_complete(UserCreatable *uc, Error **errp)
167 {
168 object_property_set_bool(OBJECT(uc), "loaded", true, errp);
169 }
170
171
172 static void
173 qcrypto_tls_creds_anon_finalize(Object *obj)
174 {
175 QCryptoTLSCredsAnon *creds = QCRYPTO_TLS_CREDS_ANON(obj);
176
177 qcrypto_tls_creds_anon_unload(creds);
178 }
179
180
181 static void
182 qcrypto_tls_creds_anon_class_init(ObjectClass *oc, void *data)
183 {
184 UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);
185
186 ucc->complete = qcrypto_tls_creds_anon_complete;
187
188 object_class_property_add_bool(oc, "loaded",
189 qcrypto_tls_creds_anon_prop_get_loaded,
190 qcrypto_tls_creds_anon_prop_set_loaded);
191 }
192
193
194 static const TypeInfo qcrypto_tls_creds_anon_info = {
195 .parent = TYPE_QCRYPTO_TLS_CREDS,
196 .name = TYPE_QCRYPTO_TLS_CREDS_ANON,
197 .instance_size = sizeof(QCryptoTLSCredsAnon),
198 .instance_finalize = qcrypto_tls_creds_anon_finalize,
199 .class_size = sizeof(QCryptoTLSCredsAnonClass),
200 .class_init = qcrypto_tls_creds_anon_class_init,
201 .interfaces = (InterfaceInfo[]) {
202 { TYPE_USER_CREATABLE },
203 { }
204 }
205 };
206
207
208 static void
209 qcrypto_tls_creds_anon_register_types(void)
210 {
211 type_register_static(&qcrypto_tls_creds_anon_info);
212 }
213
214
215 type_init(qcrypto_tls_creds_anon_register_types);