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 "qapi/error.h" 33 #include "qemu/module.h" 34 #include "authz/list.h" 35 #include "qom/object_interfaces.h" 36 37 #ifdef QCRYPTO_HAVE_TLS_TEST_SUPPORT 38 39 #define WORKDIR "tests/test-io-channel-tls-work/" 40 #define KEYFILE WORKDIR "key-ctx.pem" 41 42 struct QIOChannelTLSTestData { 43 const char *servercacrt; 44 const char *clientcacrt; 45 const char *servercrt; 46 const char *clientcrt; 47 bool expectServerFail; 48 bool expectClientFail; 49 const char *hostname; 50 const char *const *wildcards; 51 }; 52 53 struct QIOChannelTLSHandshakeData { 54 bool finished; 55 bool failed; 56 }; 57 58 static void test_tls_handshake_done(QIOTask *task, 59 gpointer opaque) 60 { 61 struct QIOChannelTLSHandshakeData *data = opaque; 62 63 data->finished = true; 64 data->failed = qio_task_propagate_error(task, NULL); 65 } 66 67 68 static QCryptoTLSCreds *test_tls_creds_create(QCryptoTLSCredsEndpoint endpoint, 69 const char *certdir) 70 { 71 Object *parent = object_get_objects_root(); 72 Object *creds = object_new_with_props( 73 TYPE_QCRYPTO_TLS_CREDS_X509, 74 parent, 75 (endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER ? 76 "testtlscredsserver" : "testtlscredsclient"), 77 &error_abort, 78 "endpoint", (endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER ? 79 "server" : "client"), 80 "dir", certdir, 81 "verify-peer", "yes", 82 "priority", "NORMAL", 83 /* We skip initial sanity checks here because we 84 * want to make sure that problems are being 85 * detected at the TLS session validation stage, 86 * and the test-crypto-tlscreds test already 87 * validate the sanity check code. 88 */ 89 "sanity-check", "no", 90 NULL 91 ); 92 93 return QCRYPTO_TLS_CREDS(creds); 94 } 95 96 97 /* 98 * This tests validation checking of peer certificates 99 * 100 * This is replicating the checks that are done for an 101 * active TLS session after handshake completes. To 102 * simulate that we create our TLS contexts, skipping 103 * sanity checks. When then get a socketpair, and 104 * initiate a TLS session across them. Finally do 105 * do actual cert validation tests 106 */ 107 static void test_io_channel_tls(const void *opaque) 108 { 109 struct QIOChannelTLSTestData *data = 110 (struct QIOChannelTLSTestData *)opaque; 111 QCryptoTLSCreds *clientCreds; 112 QCryptoTLSCreds *serverCreds; 113 QIOChannelTLS *clientChanTLS; 114 QIOChannelTLS *serverChanTLS; 115 QIOChannelSocket *clientChanSock; 116 QIOChannelSocket *serverChanSock; 117 QAuthZList *auth; 118 const char * const *wildcards; 119 int channel[2]; 120 struct QIOChannelTLSHandshakeData clientHandshake = { false, false }; 121 struct QIOChannelTLSHandshakeData serverHandshake = { false, false }; 122 QIOChannelTest *test; 123 GMainContext *mainloop; 124 125 /* We'll use this for our fake client-server connection */ 126 g_assert(socketpair(AF_UNIX, SOCK_STREAM, 0, channel) == 0); 127 128 #define CLIENT_CERT_DIR "tests/test-io-channel-tls-client/" 129 #define SERVER_CERT_DIR "tests/test-io-channel-tls-server/" 130 mkdir(CLIENT_CERT_DIR, 0700); 131 mkdir(SERVER_CERT_DIR, 0700); 132 133 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT); 134 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_CERT); 135 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_KEY); 136 137 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT); 138 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_CERT); 139 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_KEY); 140 141 g_assert(link(data->servercacrt, 142 SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT) == 0); 143 g_assert(link(data->servercrt, 144 SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_CERT) == 0); 145 g_assert(link(KEYFILE, 146 SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_KEY) == 0); 147 148 g_assert(link(data->clientcacrt, 149 CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT) == 0); 150 g_assert(link(data->clientcrt, 151 CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_CERT) == 0); 152 g_assert(link(KEYFILE, 153 CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_KEY) == 0); 154 155 clientCreds = test_tls_creds_create( 156 QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT, 157 CLIENT_CERT_DIR); 158 g_assert(clientCreds != NULL); 159 160 serverCreds = test_tls_creds_create( 161 QCRYPTO_TLS_CREDS_ENDPOINT_SERVER, 162 SERVER_CERT_DIR); 163 g_assert(serverCreds != NULL); 164 165 auth = qauthz_list_new("channeltlsacl", 166 QAUTHZ_LIST_POLICY_DENY, 167 &error_abort); 168 wildcards = data->wildcards; 169 while (wildcards && *wildcards) { 170 qauthz_list_append_rule(auth, *wildcards, 171 QAUTHZ_LIST_POLICY_ALLOW, 172 QAUTHZ_LIST_FORMAT_GLOB, 173 &error_abort); 174 wildcards++; 175 } 176 177 clientChanSock = qio_channel_socket_new_fd( 178 channel[0], &error_abort); 179 g_assert(clientChanSock != NULL); 180 serverChanSock = qio_channel_socket_new_fd( 181 channel[1], &error_abort); 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, &error_abort); 196 g_assert(clientChanTLS != NULL); 197 198 serverChanTLS = qio_channel_tls_new_server( 199 QIO_CHANNEL(serverChanSock), serverCreds, 200 "channeltlsacl", &error_abort); 201 g_assert(serverChanTLS != NULL); 202 203 qio_channel_tls_handshake(clientChanTLS, 204 test_tls_handshake_done, 205 &clientHandshake, 206 NULL, 207 NULL); 208 qio_channel_tls_handshake(serverChanTLS, 209 test_tls_handshake_done, 210 &serverHandshake, 211 NULL, 212 NULL); 213 214 /* 215 * Finally we loop around & around doing handshake on each 216 * session until we get an error, or the handshake completes. 217 * This relies on the socketpair being nonblocking to avoid 218 * deadlocking ourselves upon handshake 219 */ 220 mainloop = g_main_context_default(); 221 do { 222 g_main_context_iteration(mainloop, TRUE); 223 } while (!clientHandshake.finished || 224 !serverHandshake.finished); 225 226 g_assert(clientHandshake.failed == data->expectClientFail); 227 g_assert(serverHandshake.failed == data->expectServerFail); 228 229 test = qio_channel_test_new(); 230 qio_channel_test_run_threads(test, false, 231 QIO_CHANNEL(clientChanTLS), 232 QIO_CHANNEL(serverChanTLS)); 233 qio_channel_test_validate(test); 234 235 test = qio_channel_test_new(); 236 qio_channel_test_run_threads(test, true, 237 QIO_CHANNEL(clientChanTLS), 238 QIO_CHANNEL(serverChanTLS)); 239 qio_channel_test_validate(test); 240 241 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT); 242 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_CERT); 243 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_KEY); 244 245 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT); 246 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_CERT); 247 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_KEY); 248 249 rmdir(CLIENT_CERT_DIR); 250 rmdir(SERVER_CERT_DIR); 251 252 object_unparent(OBJECT(serverCreds)); 253 object_unparent(OBJECT(clientCreds)); 254 255 object_unref(OBJECT(serverChanTLS)); 256 object_unref(OBJECT(clientChanTLS)); 257 258 object_unref(OBJECT(serverChanSock)); 259 object_unref(OBJECT(clientChanSock)); 260 261 object_unparent(OBJECT(auth)); 262 263 close(channel[0]); 264 close(channel[1]); 265 } 266 267 268 int main(int argc, char **argv) 269 { 270 int ret; 271 272 g_assert(qcrypto_init(NULL) == 0); 273 274 module_call_init(MODULE_INIT_QOM); 275 g_test_init(&argc, &argv, NULL); 276 g_setenv("GNUTLS_FORCE_FIPS_MODE", "2", 1); 277 278 mkdir(WORKDIR, 0700); 279 280 test_tls_init(KEYFILE); 281 282 # define TEST_CHANNEL(name, caCrt, \ 283 serverCrt, clientCrt, \ 284 expectServerFail, expectClientFail, \ 285 hostname, wildcards) \ 286 struct QIOChannelTLSTestData name = { \ 287 caCrt, caCrt, serverCrt, clientCrt, \ 288 expectServerFail, expectClientFail, \ 289 hostname, wildcards \ 290 }; \ 291 g_test_add_data_func("/qio/channel/tls/" # name, \ 292 &name, test_io_channel_tls); 293 294 /* A perfect CA, perfect client & perfect server */ 295 296 /* Basic:CA:critical */ 297 TLS_ROOT_REQ(cacertreq, 298 "UK", "qemu CA", NULL, NULL, NULL, NULL, 299 true, true, true, 300 true, true, GNUTLS_KEY_KEY_CERT_SIGN, 301 false, false, NULL, NULL, 302 0, 0); 303 TLS_CERT_REQ(servercertreq, cacertreq, 304 "UK", "qemu.org", 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_SERVER, NULL, 309 0, 0); 310 TLS_CERT_REQ(clientcertreq, cacertreq, 311 "UK", "qemu", NULL, NULL, NULL, NULL, 312 true, true, false, 313 true, true, 314 GNUTLS_KEY_DIGITAL_SIGNATURE | GNUTLS_KEY_KEY_ENCIPHERMENT, 315 true, true, GNUTLS_KP_TLS_WWW_CLIENT, NULL, 316 0, 0); 317 318 const char *const wildcards[] = { 319 "C=UK,CN=qemu*", 320 NULL, 321 }; 322 TEST_CHANNEL(basic, cacertreq.filename, servercertreq.filename, 323 clientcertreq.filename, false, false, 324 "qemu.org", wildcards); 325 326 ret = g_test_run(); 327 328 test_tls_discard_cert(&clientcertreq); 329 test_tls_discard_cert(&servercertreq); 330 test_tls_discard_cert(&cacertreq); 331 332 test_tls_cleanup(KEYFILE); 333 rmdir(WORKDIR); 334 335 return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE; 336 } 337 338 #else /* ! QCRYPTO_HAVE_TLS_TEST_SUPPORT */ 339 340 int 341 main(void) 342 { 343 return EXIT_SUCCESS; 344 } 345 346 #endif /* ! QCRYPTO_HAVE_TLS_TEST_SUPPORT */ 347