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1/*
2 * QEMU I/O channel TLS test
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
18 * <http://www.gnu.org/licenses/>.
19 *
20 * Author: Daniel P. Berrange <berrange@redhat.com>
21 */
22
23
681c28a3 24#include "qemu/osdep.h"
ed8ee42c 25
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26#include "crypto-tls-x509-helpers.h"
27#include "io/channel-tls.h"
28#include "io/channel-socket.h"
29#include "io-channel-helpers.h"
d26d6b5d 30#include "crypto/init.h"
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31#include "crypto/tlscredsx509.h"
32#include "qemu/acl.h"
68db1318 33#include "qapi/error.h"
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34#include "qom/object_interfaces.h"
35
36#ifdef QCRYPTO_HAVE_TLS_TEST_SUPPORT
37
38#define WORKDIR "tests/test-io-channel-tls-work/"
39#define KEYFILE WORKDIR "key-ctx.pem"
40
41struct QIOChannelTLSTestData {
42 const char *servercacrt;
43 const char *clientcacrt;
44 const char *servercrt;
45 const char *clientcrt;
46 bool expectServerFail;
47 bool expectClientFail;
48 const char *hostname;
49 const char *const *wildcards;
50};
51
52struct QIOChannelTLSHandshakeData {
53 bool finished;
54 bool failed;
55};
56
60e705c5 57static void test_tls_handshake_done(QIOTask *task,
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58 gpointer opaque)
59{
60 struct QIOChannelTLSHandshakeData *data = opaque;
61
62 data->finished = true;
60e705c5 63 data->failed = qio_task_propagate_error(task, NULL);
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64}
65
66
67static QCryptoTLSCreds *test_tls_creds_create(QCryptoTLSCredsEndpoint endpoint,
68db1318 68 const char *certdir)
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69{
70 Object *parent = object_get_objects_root();
71 Object *creds = object_new_with_props(
72 TYPE_QCRYPTO_TLS_CREDS_X509,
73 parent,
74 (endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER ?
75 "testtlscredsserver" : "testtlscredsclient"),
68db1318 76 &error_abort,
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77 "endpoint", (endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER ?
78 "server" : "client"),
79 "dir", certdir,
80 "verify-peer", "yes",
057ad0b4 81 "priority", "NORMAL",
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82 /* We skip initial sanity checks here because we
83 * want to make sure that problems are being
84 * detected at the TLS session validation stage,
85 * and the test-crypto-tlscreds test already
86 * validate the sanity check code.
87 */
88 "sanity-check", "no",
89 NULL
90 );
91
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92 return QCRYPTO_TLS_CREDS(creds);
93}
94
95
96/*
97 * This tests validation checking of peer certificates
98 *
99 * This is replicating the checks that are done for an
100 * active TLS session after handshake completes. To
101 * simulate that we create our TLS contexts, skipping
102 * sanity checks. When then get a socketpair, and
103 * initiate a TLS session across them. Finally do
104 * do actual cert validation tests
105 */
106static void test_io_channel_tls(const void *opaque)
107{
108 struct QIOChannelTLSTestData *data =
109 (struct QIOChannelTLSTestData *)opaque;
110 QCryptoTLSCreds *clientCreds;
111 QCryptoTLSCreds *serverCreds;
112 QIOChannelTLS *clientChanTLS;
113 QIOChannelTLS *serverChanTLS;
114 QIOChannelSocket *clientChanSock;
115 QIOChannelSocket *serverChanSock;
116 qemu_acl *acl;
117 const char * const *wildcards;
118 int channel[2];
119 struct QIOChannelTLSHandshakeData clientHandshake = { false, false };
120 struct QIOChannelTLSHandshakeData serverHandshake = { false, false };
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121 QIOChannelTest *test;
122 GMainContext *mainloop;
123
124 /* We'll use this for our fake client-server connection */
125 g_assert(socketpair(AF_UNIX, SOCK_STREAM, 0, channel) == 0);
126
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127#define CLIENT_CERT_DIR "tests/test-io-channel-tls-client/"
128#define SERVER_CERT_DIR "tests/test-io-channel-tls-server/"
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129 mkdir(CLIENT_CERT_DIR, 0700);
130 mkdir(SERVER_CERT_DIR, 0700);
131
132 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT);
133 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_CERT);
134 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_KEY);
135
136 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT);
137 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_CERT);
138 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_KEY);
139
140 g_assert(link(data->servercacrt,
141 SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT) == 0);
142 g_assert(link(data->servercrt,
143 SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_CERT) == 0);
144 g_assert(link(KEYFILE,
145 SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_KEY) == 0);
146
147 g_assert(link(data->clientcacrt,
148 CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT) == 0);
149 g_assert(link(data->clientcrt,
150 CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_CERT) == 0);
151 g_assert(link(KEYFILE,
152 CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_KEY) == 0);
153
154 clientCreds = test_tls_creds_create(
155 QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT,
68db1318 156 CLIENT_CERT_DIR);
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157 g_assert(clientCreds != NULL);
158
159 serverCreds = test_tls_creds_create(
160 QCRYPTO_TLS_CREDS_ENDPOINT_SERVER,
68db1318 161 SERVER_CERT_DIR);
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162 g_assert(serverCreds != NULL);
163
164 acl = qemu_acl_init("channeltlsacl");
165 qemu_acl_reset(acl);
166 wildcards = data->wildcards;
167 while (wildcards && *wildcards) {
168 qemu_acl_append(acl, 0, *wildcards);
169 wildcards++;
170 }
171
172 clientChanSock = qio_channel_socket_new_fd(
68db1318 173 channel[0], &error_abort);
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174 g_assert(clientChanSock != NULL);
175 serverChanSock = qio_channel_socket_new_fd(
68db1318 176 channel[1], &error_abort);
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177 g_assert(serverChanSock != NULL);
178
179 /*
180 * We have an evil loop to do the handshake in a single
181 * thread, so we need these non-blocking to avoid deadlock
182 * of ourselves
183 */
184 qio_channel_set_blocking(QIO_CHANNEL(clientChanSock), false, NULL);
185 qio_channel_set_blocking(QIO_CHANNEL(serverChanSock), false, NULL);
186
187 /* Now the real part of the test, setup the sessions */
188 clientChanTLS = qio_channel_tls_new_client(
189 QIO_CHANNEL(clientChanSock), clientCreds,
68db1318 190 data->hostname, &error_abort);
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191 g_assert(clientChanTLS != NULL);
192
193 serverChanTLS = qio_channel_tls_new_server(
194 QIO_CHANNEL(serverChanSock), serverCreds,
68db1318 195 "channeltlsacl", &error_abort);
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196 g_assert(serverChanTLS != NULL);
197
198 qio_channel_tls_handshake(clientChanTLS,
199 test_tls_handshake_done,
200 &clientHandshake,
1939ccda 201 NULL,
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202 NULL);
203 qio_channel_tls_handshake(serverChanTLS,
204 test_tls_handshake_done,
205 &serverHandshake,
1939ccda 206 NULL,
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207 NULL);
208
209 /*
210 * Finally we loop around & around doing handshake on each
211 * session until we get an error, or the handshake completes.
212 * This relies on the socketpair being nonblocking to avoid
213 * deadlocking ourselves upon handshake
214 */
215 mainloop = g_main_context_default();
216 do {
217 g_main_context_iteration(mainloop, TRUE);
689ed13e 218 } while (!clientHandshake.finished ||
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219 !serverHandshake.finished);
220
221 g_assert(clientHandshake.failed == data->expectClientFail);
222 g_assert(serverHandshake.failed == data->expectServerFail);
223
224 test = qio_channel_test_new();
225 qio_channel_test_run_threads(test, false,
226 QIO_CHANNEL(clientChanTLS),
227 QIO_CHANNEL(serverChanTLS));
228 qio_channel_test_validate(test);
229
230 test = qio_channel_test_new();
231 qio_channel_test_run_threads(test, true,
232 QIO_CHANNEL(clientChanTLS),
233 QIO_CHANNEL(serverChanTLS));
234 qio_channel_test_validate(test);
235
236 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT);
237 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_CERT);
238 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_KEY);
239
240 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT);
241 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_CERT);
242 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_KEY);
243
244 rmdir(CLIENT_CERT_DIR);
245 rmdir(SERVER_CERT_DIR);
246
247 object_unparent(OBJECT(serverCreds));
248 object_unparent(OBJECT(clientCreds));
249
250 object_unref(OBJECT(serverChanTLS));
251 object_unref(OBJECT(clientChanTLS));
252
253 object_unref(OBJECT(serverChanSock));
254 object_unref(OBJECT(clientChanSock));
255
256 close(channel[0]);
257 close(channel[1]);
258}
259
260
261int main(int argc, char **argv)
262{
263 int ret;
264
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265 g_assert(qcrypto_init(NULL) == 0);
266
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267 module_call_init(MODULE_INIT_QOM);
268 g_test_init(&argc, &argv, NULL);
269 setenv("GNUTLS_FORCE_FIPS_MODE", "2", 1);
270
271 mkdir(WORKDIR, 0700);
272
273 test_tls_init(KEYFILE);
274
275# define TEST_CHANNEL(name, caCrt, \
276 serverCrt, clientCrt, \
277 expectServerFail, expectClientFail, \
278 hostname, wildcards) \
279 struct QIOChannelTLSTestData name = { \
280 caCrt, caCrt, serverCrt, clientCrt, \
281 expectServerFail, expectClientFail, \
282 hostname, wildcards \
283 }; \
284 g_test_add_data_func("/qio/channel/tls/" # name, \
285 &name, test_io_channel_tls);
286
287 /* A perfect CA, perfect client & perfect server */
288
289 /* Basic:CA:critical */
290 TLS_ROOT_REQ(cacertreq,
291 "UK", "qemu CA", NULL, NULL, NULL, NULL,
292 true, true, true,
293 true, true, GNUTLS_KEY_KEY_CERT_SIGN,
294 false, false, NULL, NULL,
295 0, 0);
296 TLS_CERT_REQ(servercertreq, cacertreq,
297 "UK", "qemu.org", NULL, NULL, NULL, NULL,
298 true, true, false,
299 true, true,
300 GNUTLS_KEY_DIGITAL_SIGNATURE | GNUTLS_KEY_KEY_ENCIPHERMENT,
301 true, true, GNUTLS_KP_TLS_WWW_SERVER, NULL,
302 0, 0);
303 TLS_CERT_REQ(clientcertreq, cacertreq,
304 "UK", "qemu", NULL, NULL, NULL, NULL,
305 true, true, false,
306 true, true,
307 GNUTLS_KEY_DIGITAL_SIGNATURE | GNUTLS_KEY_KEY_ENCIPHERMENT,
308 true, true, GNUTLS_KP_TLS_WWW_CLIENT, NULL,
309 0, 0);
310
311 const char *const wildcards[] = {
312 "C=UK,CN=qemu*",
313 NULL,
314 };
315 TEST_CHANNEL(basic, cacertreq.filename, servercertreq.filename,
316 clientcertreq.filename, false, false,
317 "qemu.org", wildcards);
318
319 ret = g_test_run();
320
321 test_tls_discard_cert(&clientcertreq);
322 test_tls_discard_cert(&servercertreq);
323 test_tls_discard_cert(&cacertreq);
324
325 test_tls_cleanup(KEYFILE);
326 rmdir(WORKDIR);
327
328 return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
329}
330
331#else /* ! QCRYPTO_HAVE_TLS_TEST_SUPPORT */
332
333int
334main(void)
335{
336 return EXIT_SUCCESS;
337}
338
339#endif /* ! QCRYPTO_HAVE_TLS_TEST_SUPPORT */