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 #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 { 69 Object *parent = object_get_objects_root(); 70 Object *creds = object_new_with_props( 71 TYPE_QCRYPTO_TLS_CREDS_X509, 72 parent, 73 (endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER ? 74 "testtlscredsserver" : "testtlscredsclient"), 75 &error_abort, 76 "endpoint", (endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER ? 77 "server" : "client"), 78 "dir", certdir, 79 "verify-peer", "yes", 80 "priority", "NORMAL", 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 return QCRYPTO_TLS_CREDS(creds); 92 } 93 94 95 /* 96 * This tests validation checking of peer certificates 97 * 98 * This is replicating the checks that are done for an 99 * active TLS session after handshake completes. To 100 * simulate that we create our TLS contexts, skipping 101 * sanity checks. When then get a socketpair, and 102 * initiate a TLS session across them. Finally do 103 * do actual cert validation tests 104 */ 105 static void test_io_channel_tls(const void *opaque) 106 { 107 struct QIOChannelTLSTestData *data = 108 (struct QIOChannelTLSTestData *)opaque; 109 QCryptoTLSCreds *clientCreds; 110 QCryptoTLSCreds *serverCreds; 111 QIOChannelTLS *clientChanTLS; 112 QIOChannelTLS *serverChanTLS; 113 QIOChannelSocket *clientChanSock; 114 QIOChannelSocket *serverChanSock; 115 QAuthZList *auth; 116 const char * const *wildcards; 117 int channel[2]; 118 struct QIOChannelTLSHandshakeData clientHandshake = { false, false }; 119 struct QIOChannelTLSHandshakeData serverHandshake = { false, false }; 120 QIOChannelTest *test; 121 GMainContext *mainloop; 122 123 /* We'll use this for our fake client-server connection */ 124 g_assert(qemu_socketpair(AF_UNIX, SOCK_STREAM, 0, channel) == 0); 125 126 #define CLIENT_CERT_DIR "tests/test-io-channel-tls-client/" 127 #define SERVER_CERT_DIR "tests/test-io-channel-tls-server/" 128 g_mkdir_with_parents(CLIENT_CERT_DIR, 0700); 129 g_mkdir_with_parents(SERVER_CERT_DIR, 0700); 130 131 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT); 132 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_CERT); 133 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_KEY); 134 135 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT); 136 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_CERT); 137 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_KEY); 138 139 g_assert(link(data->servercacrt, 140 SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT) == 0); 141 g_assert(link(data->servercrt, 142 SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_CERT) == 0); 143 g_assert(link(KEYFILE, 144 SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_KEY) == 0); 145 146 g_assert(link(data->clientcacrt, 147 CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT) == 0); 148 g_assert(link(data->clientcrt, 149 CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_CERT) == 0); 150 g_assert(link(KEYFILE, 151 CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_KEY) == 0); 152 153 clientCreds = test_tls_creds_create( 154 QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT, 155 CLIENT_CERT_DIR); 156 g_assert(clientCreds != NULL); 157 158 serverCreds = test_tls_creds_create( 159 QCRYPTO_TLS_CREDS_ENDPOINT_SERVER, 160 SERVER_CERT_DIR); 161 g_assert(serverCreds != NULL); 162 163 auth = qauthz_list_new("channeltlsacl", 164 QAUTHZ_LIST_POLICY_DENY, 165 &error_abort); 166 wildcards = data->wildcards; 167 while (wildcards && *wildcards) { 168 qauthz_list_append_rule(auth, *wildcards, 169 QAUTHZ_LIST_POLICY_ALLOW, 170 QAUTHZ_LIST_FORMAT_GLOB, 171 &error_abort); 172 wildcards++; 173 } 174 175 clientChanSock = qio_channel_socket_new_fd( 176 channel[0], &error_abort); 177 g_assert(clientChanSock != NULL); 178 serverChanSock = qio_channel_socket_new_fd( 179 channel[1], &error_abort); 180 g_assert(serverChanSock != NULL); 181 182 /* 183 * We have an evil loop to do the handshake in a single 184 * thread, so we need these non-blocking to avoid deadlock 185 * of ourselves 186 */ 187 qio_channel_set_blocking(QIO_CHANNEL(clientChanSock), false, NULL); 188 qio_channel_set_blocking(QIO_CHANNEL(serverChanSock), false, NULL); 189 190 /* Now the real part of the test, setup the sessions */ 191 clientChanTLS = qio_channel_tls_new_client( 192 QIO_CHANNEL(clientChanSock), clientCreds, 193 data->hostname, &error_abort); 194 g_assert(clientChanTLS != NULL); 195 196 serverChanTLS = qio_channel_tls_new_server( 197 QIO_CHANNEL(serverChanSock), serverCreds, 198 "channeltlsacl", &error_abort); 199 g_assert(serverChanTLS != NULL); 200 201 qio_channel_tls_handshake(clientChanTLS, 202 test_tls_handshake_done, 203 &clientHandshake, 204 NULL, 205 NULL); 206 qio_channel_tls_handshake(serverChanTLS, 207 test_tls_handshake_done, 208 &serverHandshake, 209 NULL, 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 object_unparent(OBJECT(auth)); 260 261 close(channel[0]); 262 close(channel[1]); 263 } 264 265 266 int main(int argc, char **argv) 267 { 268 int ret; 269 270 g_assert(qcrypto_init(NULL) == 0); 271 272 module_call_init(MODULE_INIT_QOM); 273 g_test_init(&argc, &argv, NULL); 274 g_setenv("GNUTLS_FORCE_FIPS_MODE", "2", 1); 275 276 g_mkdir_with_parents(WORKDIR, 0700); 277 278 test_tls_init(KEYFILE); 279 280 # define TEST_CHANNEL(name, caCrt, \ 281 serverCrt, clientCrt, \ 282 expectServerFail, expectClientFail, \ 283 hostname, wildcards) \ 284 struct QIOChannelTLSTestData name = { \ 285 caCrt, caCrt, serverCrt, clientCrt, \ 286 expectServerFail, expectClientFail, \ 287 hostname, wildcards \ 288 }; \ 289 g_test_add_data_func("/qio/channel/tls/" # name, \ 290 &name, test_io_channel_tls); 291 292 /* A perfect CA, perfect client & perfect server */ 293 294 /* Basic:CA:critical */ 295 TLS_ROOT_REQ(cacertreq, 296 "UK", "qemu CA", NULL, NULL, NULL, NULL, 297 true, true, true, 298 true, true, GNUTLS_KEY_KEY_CERT_SIGN, 299 false, false, NULL, NULL, 300 0, 0); 301 TLS_CERT_REQ(servercertreq, cacertreq, 302 "UK", "qemu.org", NULL, NULL, NULL, NULL, 303 true, true, false, 304 true, true, 305 GNUTLS_KEY_DIGITAL_SIGNATURE | GNUTLS_KEY_KEY_ENCIPHERMENT, 306 true, true, GNUTLS_KP_TLS_WWW_SERVER, NULL, 307 0, 0); 308 TLS_CERT_REQ(clientcertreq, cacertreq, 309 "UK", "qemu", NULL, NULL, NULL, NULL, 310 true, true, false, 311 true, true, 312 GNUTLS_KEY_DIGITAL_SIGNATURE | GNUTLS_KEY_KEY_ENCIPHERMENT, 313 true, true, GNUTLS_KP_TLS_WWW_CLIENT, NULL, 314 0, 0); 315 316 const char *const wildcards[] = { 317 "C=UK,CN=qemu*", 318 NULL, 319 }; 320 TEST_CHANNEL(basic, cacertreq.filename, servercertreq.filename, 321 clientcertreq.filename, false, false, 322 "qemu.org", wildcards); 323 324 ret = g_test_run(); 325 326 test_tls_discard_cert(&clientcertreq); 327 test_tls_discard_cert(&servercertreq); 328 test_tls_discard_cert(&cacertreq); 329 330 test_tls_cleanup(KEYFILE); 331 rmdir(WORKDIR); 332 333 return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE; 334 } 335