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 24 #include "qemu/osdep.h" 25 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" 30 #include "crypto/init.h" 31 #include "crypto/tlscredsx509.h" 32 #include "qemu/acl.h" 33 #include "qom/object_interfaces.h" 34 35 #ifdef QCRYPTO_HAVE_TLS_TEST_SUPPORT 36 37 #define WORKDIR "tests/test-io-channel-tls-work/" 38 #define KEYFILE WORKDIR "key-ctx.pem" 39 40 struct QIOChannelTLSTestData { 41 const char *servercacrt; 42 const char *clientcacrt; 43 const char *servercrt; 44 const char *clientcrt; 45 bool expectServerFail; 46 bool expectClientFail; 47 const char *hostname; 48 const char *const *wildcards; 49 }; 50 51 struct QIOChannelTLSHandshakeData { 52 bool finished; 53 bool failed; 54 }; 55 56 static void test_tls_handshake_done(QIOTask *task, 57 gpointer opaque) 58 { 59 struct QIOChannelTLSHandshakeData *data = opaque; 60 61 data->finished = true; 62 data->failed = qio_task_propagate_error(task, NULL); 63 } 64 65 66 static QCryptoTLSCreds *test_tls_creds_create(QCryptoTLSCredsEndpoint endpoint, 67 const char *certdir, 68 Error **errp) 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"), 76 errp, 77 "endpoint", (endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER ? 78 "server" : "client"), 79 "dir", certdir, 80 "verify-peer", "yes", 81 /* We skip initial sanity checks here because we 82 * want to make sure that problems are being 83 * detected at the TLS session validation stage, 84 * and the test-crypto-tlscreds test already 85 * validate the sanity check code. 86 */ 87 "sanity-check", "no", 88 NULL 89 ); 90 91 if (*errp) { 92 return NULL; 93 } 94 return QCRYPTO_TLS_CREDS(creds); 95 } 96 97 98 /* 99 * This tests validation checking of peer certificates 100 * 101 * This is replicating the checks that are done for an 102 * active TLS session after handshake completes. To 103 * simulate that we create our TLS contexts, skipping 104 * sanity checks. When then get a socketpair, and 105 * initiate a TLS session across them. Finally do 106 * do actual cert validation tests 107 */ 108 static void test_io_channel_tls(const void *opaque) 109 { 110 struct QIOChannelTLSTestData *data = 111 (struct QIOChannelTLSTestData *)opaque; 112 QCryptoTLSCreds *clientCreds; 113 QCryptoTLSCreds *serverCreds; 114 QIOChannelTLS *clientChanTLS; 115 QIOChannelTLS *serverChanTLS; 116 QIOChannelSocket *clientChanSock; 117 QIOChannelSocket *serverChanSock; 118 qemu_acl *acl; 119 const char * const *wildcards; 120 int channel[2]; 121 struct QIOChannelTLSHandshakeData clientHandshake = { false, false }; 122 struct QIOChannelTLSHandshakeData serverHandshake = { false, false }; 123 Error *err = NULL; 124 QIOChannelTest *test; 125 GMainContext *mainloop; 126 127 /* We'll use this for our fake client-server connection */ 128 g_assert(socketpair(AF_UNIX, SOCK_STREAM, 0, channel) == 0); 129 130 #define CLIENT_CERT_DIR "tests/test-io-channel-tls-client/" 131 #define SERVER_CERT_DIR "tests/test-io-channel-tls-server/" 132 mkdir(CLIENT_CERT_DIR, 0700); 133 mkdir(SERVER_CERT_DIR, 0700); 134 135 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT); 136 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_CERT); 137 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_KEY); 138 139 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT); 140 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_CERT); 141 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_KEY); 142 143 g_assert(link(data->servercacrt, 144 SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT) == 0); 145 g_assert(link(data->servercrt, 146 SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_CERT) == 0); 147 g_assert(link(KEYFILE, 148 SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_KEY) == 0); 149 150 g_assert(link(data->clientcacrt, 151 CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT) == 0); 152 g_assert(link(data->clientcrt, 153 CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_CERT) == 0); 154 g_assert(link(KEYFILE, 155 CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_KEY) == 0); 156 157 clientCreds = test_tls_creds_create( 158 QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT, 159 CLIENT_CERT_DIR, 160 &err); 161 g_assert(clientCreds != NULL); 162 163 serverCreds = test_tls_creds_create( 164 QCRYPTO_TLS_CREDS_ENDPOINT_SERVER, 165 SERVER_CERT_DIR, 166 &err); 167 g_assert(serverCreds != NULL); 168 169 acl = qemu_acl_init("channeltlsacl"); 170 qemu_acl_reset(acl); 171 wildcards = data->wildcards; 172 while (wildcards && *wildcards) { 173 qemu_acl_append(acl, 0, *wildcards); 174 wildcards++; 175 } 176 177 clientChanSock = qio_channel_socket_new_fd( 178 channel[0], &err); 179 g_assert(clientChanSock != NULL); 180 serverChanSock = qio_channel_socket_new_fd( 181 channel[1], &err); 182 g_assert(serverChanSock != NULL); 183 184 /* 185 * We have an evil loop to do the handshake in a single 186 * thread, so we need these non-blocking to avoid deadlock 187 * of ourselves 188 */ 189 qio_channel_set_blocking(QIO_CHANNEL(clientChanSock), false, NULL); 190 qio_channel_set_blocking(QIO_CHANNEL(serverChanSock), false, NULL); 191 192 /* Now the real part of the test, setup the sessions */ 193 clientChanTLS = qio_channel_tls_new_client( 194 QIO_CHANNEL(clientChanSock), clientCreds, 195 data->hostname, &err); 196 g_assert(clientChanTLS != NULL); 197 198 serverChanTLS = qio_channel_tls_new_server( 199 QIO_CHANNEL(serverChanSock), serverCreds, 200 "channeltlsacl", &err); 201 g_assert(serverChanTLS != NULL); 202 203 qio_channel_tls_handshake(clientChanTLS, 204 test_tls_handshake_done, 205 &clientHandshake, 206 NULL); 207 qio_channel_tls_handshake(serverChanTLS, 208 test_tls_handshake_done, 209 &serverHandshake, 210 NULL); 211 212 /* 213 * Finally we loop around & around doing handshake on each 214 * session until we get an error, or the handshake completes. 215 * This relies on the socketpair being nonblocking to avoid 216 * deadlocking ourselves upon handshake 217 */ 218 mainloop = g_main_context_default(); 219 do { 220 g_main_context_iteration(mainloop, TRUE); 221 } while (!clientHandshake.finished || 222 !serverHandshake.finished); 223 224 g_assert(clientHandshake.failed == data->expectClientFail); 225 g_assert(serverHandshake.failed == data->expectServerFail); 226 227 test = qio_channel_test_new(); 228 qio_channel_test_run_threads(test, false, 229 QIO_CHANNEL(clientChanTLS), 230 QIO_CHANNEL(serverChanTLS)); 231 qio_channel_test_validate(test); 232 233 test = qio_channel_test_new(); 234 qio_channel_test_run_threads(test, true, 235 QIO_CHANNEL(clientChanTLS), 236 QIO_CHANNEL(serverChanTLS)); 237 qio_channel_test_validate(test); 238 239 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT); 240 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_CERT); 241 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_KEY); 242 243 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT); 244 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_CERT); 245 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_KEY); 246 247 rmdir(CLIENT_CERT_DIR); 248 rmdir(SERVER_CERT_DIR); 249 250 object_unparent(OBJECT(serverCreds)); 251 object_unparent(OBJECT(clientCreds)); 252 253 object_unref(OBJECT(serverChanTLS)); 254 object_unref(OBJECT(clientChanTLS)); 255 256 object_unref(OBJECT(serverChanSock)); 257 object_unref(OBJECT(clientChanSock)); 258 259 close(channel[0]); 260 close(channel[1]); 261 } 262 263 264 int main(int argc, char **argv) 265 { 266 int ret; 267 268 g_assert(qcrypto_init(NULL) == 0); 269 270 module_call_init(MODULE_INIT_QOM); 271 g_test_init(&argc, &argv, NULL); 272 setenv("GNUTLS_FORCE_FIPS_MODE", "2", 1); 273 274 mkdir(WORKDIR, 0700); 275 276 test_tls_init(KEYFILE); 277 278 # define TEST_CHANNEL(name, caCrt, \ 279 serverCrt, clientCrt, \ 280 expectServerFail, expectClientFail, \ 281 hostname, wildcards) \ 282 struct QIOChannelTLSTestData name = { \ 283 caCrt, caCrt, serverCrt, clientCrt, \ 284 expectServerFail, expectClientFail, \ 285 hostname, wildcards \ 286 }; \ 287 g_test_add_data_func("/qio/channel/tls/" # name, \ 288 &name, test_io_channel_tls); 289 290 /* A perfect CA, perfect client & perfect server */ 291 292 /* Basic:CA:critical */ 293 TLS_ROOT_REQ(cacertreq, 294 "UK", "qemu CA", NULL, NULL, NULL, NULL, 295 true, true, true, 296 true, true, GNUTLS_KEY_KEY_CERT_SIGN, 297 false, false, NULL, NULL, 298 0, 0); 299 TLS_CERT_REQ(servercertreq, cacertreq, 300 "UK", "qemu.org", NULL, NULL, NULL, NULL, 301 true, true, false, 302 true, true, 303 GNUTLS_KEY_DIGITAL_SIGNATURE | GNUTLS_KEY_KEY_ENCIPHERMENT, 304 true, true, GNUTLS_KP_TLS_WWW_SERVER, NULL, 305 0, 0); 306 TLS_CERT_REQ(clientcertreq, cacertreq, 307 "UK", "qemu", NULL, NULL, NULL, NULL, 308 true, true, false, 309 true, true, 310 GNUTLS_KEY_DIGITAL_SIGNATURE | GNUTLS_KEY_KEY_ENCIPHERMENT, 311 true, true, GNUTLS_KP_TLS_WWW_CLIENT, NULL, 312 0, 0); 313 314 const char *const wildcards[] = { 315 "C=UK,CN=qemu*", 316 NULL, 317 }; 318 TEST_CHANNEL(basic, cacertreq.filename, servercertreq.filename, 319 clientcertreq.filename, false, false, 320 "qemu.org", wildcards); 321 322 ret = g_test_run(); 323 324 test_tls_discard_cert(&clientcertreq); 325 test_tls_discard_cert(&servercertreq); 326 test_tls_discard_cert(&cacertreq); 327 328 test_tls_cleanup(KEYFILE); 329 rmdir(WORKDIR); 330 331 return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE; 332 } 333 334 #else /* ! QCRYPTO_HAVE_TLS_TEST_SUPPORT */ 335 336 int 337 main(void) 338 { 339 return EXIT_SUCCESS; 340 } 341 342 #endif /* ! QCRYPTO_HAVE_TLS_TEST_SUPPORT */ 343