aboutsummaryrefslogtreecommitdiff
path: root/tests/test-io-channel-tls.c
blob: ad7554c534f595a8eccc29833c631e0ac5592d9e (plain)
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
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
/*
 * QEMU I/O channel TLS test
 *
 * 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 2.1 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/>.
 *
 * Author: Daniel P. Berrange <berrange@redhat.com>
 */


#include "qemu/osdep.h"

#include "crypto-tls-x509-helpers.h"
#include "io/channel-tls.h"
#include "io/channel-socket.h"
#include "io-channel-helpers.h"
#include "crypto/init.h"
#include "crypto/tlscredsx509.h"
#include "qapi/error.h"
#include "qemu/module.h"
#include "authz/list.h"
#include "qom/object_interfaces.h"

#ifdef QCRYPTO_HAVE_TLS_TEST_SUPPORT

#define WORKDIR "tests/test-io-channel-tls-work/"
#define KEYFILE WORKDIR "key-ctx.pem"

struct QIOChannelTLSTestData {
    const char *servercacrt;
    const char *clientcacrt;
    const char *servercrt;
    const char *clientcrt;
    bool expectServerFail;
    bool expectClientFail;
    const char *hostname;
    const char *const *wildcards;
};

struct QIOChannelTLSHandshakeData {
    bool finished;
    bool failed;
};

static void test_tls_handshake_done(QIOTask *task,
                                    gpointer opaque)
{
    struct QIOChannelTLSHandshakeData *data = opaque;

    data->finished = true;
    data->failed = qio_task_propagate_error(task, NULL);
}


static QCryptoTLSCreds *test_tls_creds_create(QCryptoTLSCredsEndpoint endpoint,
                                              const char *certdir)
{
    Object *parent = object_get_objects_root();
    Object *creds = object_new_with_props(
        TYPE_QCRYPTO_TLS_CREDS_X509,
        parent,
        (endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER ?
         "testtlscredsserver" : "testtlscredsclient"),
        &error_abort,
        "endpoint", (endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER ?
                     "server" : "client"),
        "dir", certdir,
        "verify-peer", "yes",
        "priority", "NORMAL",
        /* We skip initial sanity checks here because we
         * want to make sure that problems are being
         * detected at the TLS session validation stage,
         * and the test-crypto-tlscreds test already
         * validate the sanity check code.
         */
        "sanity-check", "no",
        NULL
        );

    return QCRYPTO_TLS_CREDS(creds);
}


/*
 * This tests validation checking of peer certificates
 *
 * This is replicating the checks that are done for an
 * active TLS session after handshake completes. To
 * simulate that we create our TLS contexts, skipping
 * sanity checks. When then get a socketpair, and
 * initiate a TLS session across them. Finally do
 * do actual cert validation tests
 */
static void test_io_channel_tls(const void *opaque)
{
    struct QIOChannelTLSTestData *data =
        (struct QIOChannelTLSTestData *)opaque;
    QCryptoTLSCreds *clientCreds;
    QCryptoTLSCreds *serverCreds;
    QIOChannelTLS *clientChanTLS;
    QIOChannelTLS *serverChanTLS;
    QIOChannelSocket *clientChanSock;
    QIOChannelSocket *serverChanSock;
    QAuthZList *auth;
    const char * const *wildcards;
    int channel[2];
    struct QIOChannelTLSHandshakeData clientHandshake = { false, false };
    struct QIOChannelTLSHandshakeData serverHandshake = { false, false };
    QIOChannelTest *test;
    GMainContext *mainloop;

    /* We'll use this for our fake client-server connection */
    g_assert(socketpair(AF_UNIX, SOCK_STREAM, 0, channel) == 0);

#define CLIENT_CERT_DIR "tests/test-io-channel-tls-client/"
#define SERVER_CERT_DIR "tests/test-io-channel-tls-server/"
    mkdir(CLIENT_CERT_DIR, 0700);
    mkdir(SERVER_CERT_DIR, 0700);

    unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT);
    unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_CERT);
    unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_KEY);

    unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT);
    unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_CERT);
    unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_KEY);

    g_assert(link(data->servercacrt,
                  SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT) == 0);
    g_assert(link(data->servercrt,
                  SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_CERT) == 0);
    g_assert(link(KEYFILE,
                  SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_KEY) == 0);

    g_assert(link(data->clientcacrt,
                  CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT) == 0);
    g_assert(link(data->clientcrt,
                  CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_CERT) == 0);
    g_assert(link(KEYFILE,
                  CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_KEY) == 0);

    clientCreds = test_tls_creds_create(
        QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT,
        CLIENT_CERT_DIR);
    g_assert(clientCreds != NULL);

    serverCreds = test_tls_creds_create(
        QCRYPTO_TLS_CREDS_ENDPOINT_SERVER,
        SERVER_CERT_DIR);
    g_assert(serverCreds != NULL);

    auth = qauthz_list_new("channeltlsacl",
                           QAUTHZ_LIST_POLICY_DENY,
                           &error_abort);
    wildcards = data->wildcards;
    while (wildcards && *wildcards) {
        qauthz_list_append_rule(auth, *wildcards,
                                QAUTHZ_LIST_POLICY_ALLOW,
                                QAUTHZ_LIST_FORMAT_GLOB,
                                &error_abort);
        wildcards++;
    }

    clientChanSock = qio_channel_socket_new_fd(
        channel[0], &error_abort);
    g_assert(clientChanSock != NULL);
    serverChanSock = qio_channel_socket_new_fd(
        channel[1], &error_abort);
    g_assert(serverChanSock != NULL);

    /*
     * We have an evil loop to do the handshake in a single
     * thread, so we need these non-blocking to avoid deadlock
     * of ourselves
     */
    qio_channel_set_blocking(QIO_CHANNEL(clientChanSock), false, NULL);
    qio_channel_set_blocking(QIO_CHANNEL(serverChanSock), false, NULL);

    /* Now the real part of the test, setup the sessions */
    clientChanTLS = qio_channel_tls_new_client(
        QIO_CHANNEL(clientChanSock), clientCreds,
        data->hostname, &error_abort);
    g_assert(clientChanTLS != NULL);

    serverChanTLS = qio_channel_tls_new_server(
        QIO_CHANNEL(serverChanSock), serverCreds,
        "channeltlsacl", &error_abort);
    g_assert(serverChanTLS != NULL);

    qio_channel_tls_handshake(clientChanTLS,
                              test_tls_handshake_done,
                              &clientHandshake,
                              NULL,
                              NULL);
    qio_channel_tls_handshake(serverChanTLS,
                              test_tls_handshake_done,
                              &serverHandshake,
                              NULL,
                              NULL);

    /*
     * Finally we loop around & around doing handshake on each
     * session until we get an error, or the handshake completes.
     * This relies on the socketpair being nonblocking to avoid
     * deadlocking ourselves upon handshake
     */
    mainloop = g_main_context_default();
    do {
        g_main_context_iteration(mainloop, TRUE);
    } while (!clientHandshake.finished ||
             !serverHandshake.finished);

    g_assert(clientHandshake.failed == data->expectClientFail);
    g_assert(serverHandshake.failed == data->expectServerFail);

    test = qio_channel_test_new();
    qio_channel_test_run_threads(test, false,
                                 QIO_CHANNEL(clientChanTLS),
                                 QIO_CHANNEL(serverChanTLS));
    qio_channel_test_validate(test);

    test = qio_channel_test_new();
    qio_channel_test_run_threads(test, true,
                                 QIO_CHANNEL(clientChanTLS),
                                 QIO_CHANNEL(serverChanTLS));
    qio_channel_test_validate(test);

    unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT);
    unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_CERT);
    unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_KEY);

    unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT);
    unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_CERT);
    unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_KEY);

    rmdir(CLIENT_CERT_DIR);
    rmdir(SERVER_CERT_DIR);

    object_unparent(OBJECT(serverCreds));
    object_unparent(OBJECT(clientCreds));

    object_unref(OBJECT(serverChanTLS));
    object_unref(OBJECT(clientChanTLS));

    object_unref(OBJECT(serverChanSock));
    object_unref(OBJECT(clientChanSock));

    object_unparent(OBJECT(auth));

    close(channel[0]);
    close(channel[1]);
}


int main(int argc, char **argv)
{
    int ret;

    g_assert(qcrypto_init(NULL) == 0);

    module_call_init(MODULE_INIT_QOM);
    g_test_init(&argc, &argv, NULL);
    g_setenv("GNUTLS_FORCE_FIPS_MODE", "2", 1);

    mkdir(WORKDIR, 0700);

    test_tls_init(KEYFILE);

# define TEST_CHANNEL(name, caCrt,                                      \
                      serverCrt, clientCrt,                             \
                      expectServerFail, expectClientFail,               \
                      hostname, wildcards)                              \
    struct QIOChannelTLSTestData name = {                               \
        caCrt, caCrt, serverCrt, clientCrt,                             \
        expectServerFail, expectClientFail,                             \
        hostname, wildcards                                             \
    };                                                                  \
    g_test_add_data_func("/qio/channel/tls/" # name,                    \
                         &name, test_io_channel_tls);

    /* A perfect CA, perfect client & perfect server */

    /* Basic:CA:critical */
    TLS_ROOT_REQ(cacertreq,
                 "UK", "qemu CA", NULL, NULL, NULL, NULL,
                 true, true, true,
                 true, true, GNUTLS_KEY_KEY_CERT_SIGN,
                 false, false, NULL, NULL,
                 0, 0);
    TLS_CERT_REQ(servercertreq, cacertreq,
                 "UK", "qemu.org", NULL, NULL, NULL, NULL,
                 true, true, false,
                 true, true,
                 GNUTLS_KEY_DIGITAL_SIGNATURE | GNUTLS_KEY_KEY_ENCIPHERMENT,
                 true, true, GNUTLS_KP_TLS_WWW_SERVER, NULL,
                 0, 0);
    TLS_CERT_REQ(clientcertreq, cacertreq,
                 "UK", "qemu", NULL, NULL, NULL, NULL,
                 true, true, false,
                 true, true,
                 GNUTLS_KEY_DIGITAL_SIGNATURE | GNUTLS_KEY_KEY_ENCIPHERMENT,
                 true, true, GNUTLS_KP_TLS_WWW_CLIENT, NULL,
                 0, 0);

    const char *const wildcards[] = {
        "C=UK,CN=qemu*",
        NULL,
    };
    TEST_CHANNEL(basic, cacertreq.filename, servercertreq.filename,
                 clientcertreq.filename, false, false,
                 "qemu.org", wildcards);

    ret = g_test_run();

    test_tls_discard_cert(&clientcertreq);
    test_tls_discard_cert(&servercertreq);
    test_tls_discard_cert(&cacertreq);

    test_tls_cleanup(KEYFILE);
    rmdir(WORKDIR);

    return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}

#else /* ! QCRYPTO_HAVE_TLS_TEST_SUPPORT */

int
main(void)
{
    return EXIT_SUCCESS;
}

#endif /* ! QCRYPTO_HAVE_TLS_TEST_SUPPORT */