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 <stdlib.h> 25 #include <fcntl.h> 26 27 #include "config-host.h" 28 #include "crypto-tls-x509-helpers.h" 29 #include "io/channel-tls.h" 30 #include "io/channel-socket.h" 31 #include "io-channel-helpers.h" 32 #include "crypto/tlscredsx509.h" 33 #include "qemu/acl.h" 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 41 struct 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 52 struct QIOChannelTLSHandshakeData { 53 bool finished; 54 bool failed; 55 }; 56 57 static void test_tls_handshake_done(Object *source, 58 Error *err, 59 gpointer opaque) 60 { 61 struct QIOChannelTLSHandshakeData *data = opaque; 62 63 data->finished = true; 64 data->failed = err != NULL; 65 } 66 67 68 static QCryptoTLSCreds *test_tls_creds_create(QCryptoTLSCredsEndpoint endpoint, 69 const char *certdir, 70 Error **errp) 71 { 72 Object *parent = object_get_objects_root(); 73 Object *creds = object_new_with_props( 74 TYPE_QCRYPTO_TLS_CREDS_X509, 75 parent, 76 (endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER ? 77 "testtlscredsserver" : "testtlscredsclient"), 78 errp, 79 "endpoint", (endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER ? 80 "server" : "client"), 81 "dir", certdir, 82 "verify-peer", "yes", 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 if (*errp) { 94 return NULL; 95 } 96 return QCRYPTO_TLS_CREDS(creds); 97 } 98 99 100 /* 101 * This tests validation checking of peer certificates 102 * 103 * This is replicating the checks that are done for an 104 * active TLS session after handshake completes. To 105 * simulate that we create our TLS contexts, skipping 106 * sanity checks. When then get a socketpair, and 107 * initiate a TLS session across them. Finally do 108 * do actual cert validation tests 109 */ 110 static void test_io_channel_tls(const void *opaque) 111 { 112 struct QIOChannelTLSTestData *data = 113 (struct QIOChannelTLSTestData *)opaque; 114 QCryptoTLSCreds *clientCreds; 115 QCryptoTLSCreds *serverCreds; 116 QIOChannelTLS *clientChanTLS; 117 QIOChannelTLS *serverChanTLS; 118 QIOChannelSocket *clientChanSock; 119 QIOChannelSocket *serverChanSock; 120 qemu_acl *acl; 121 const char * const *wildcards; 122 int channel[2]; 123 struct QIOChannelTLSHandshakeData clientHandshake = { false, false }; 124 struct QIOChannelTLSHandshakeData serverHandshake = { false, false }; 125 Error *err = NULL; 126 QIOChannelTest *test; 127 GMainContext *mainloop; 128 129 /* We'll use this for our fake client-server connection */ 130 g_assert(socketpair(AF_UNIX, SOCK_STREAM, 0, channel) == 0); 131 132 #define CLIENT_CERT_DIR "tests/test-crypto-tlssession-client/" 133 #define SERVER_CERT_DIR "tests/test-crypto-tlssession-server/" 134 mkdir(CLIENT_CERT_DIR, 0700); 135 mkdir(SERVER_CERT_DIR, 0700); 136 137 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT); 138 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_CERT); 139 unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_KEY); 140 141 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT); 142 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_CERT); 143 unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_KEY); 144 145 g_assert(link(data->servercacrt, 146 SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT) == 0); 147 g_assert(link(data->servercrt, 148 SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_CERT) == 0); 149 g_assert(link(KEYFILE, 150 SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_KEY) == 0); 151 152 g_assert(link(data->clientcacrt, 153 CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT) == 0); 154 g_assert(link(data->clientcrt, 155 CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_CERT) == 0); 156 g_assert(link(KEYFILE, 157 CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_KEY) == 0); 158 159 clientCreds = test_tls_creds_create( 160 QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT, 161 CLIENT_CERT_DIR, 162 &err); 163 g_assert(clientCreds != NULL); 164 165 serverCreds = test_tls_creds_create( 166 QCRYPTO_TLS_CREDS_ENDPOINT_SERVER, 167 SERVER_CERT_DIR, 168 &err); 169 g_assert(serverCreds != NULL); 170 171 acl = qemu_acl_init("channeltlsacl"); 172 qemu_acl_reset(acl); 173 wildcards = data->wildcards; 174 while (wildcards && *wildcards) { 175 qemu_acl_append(acl, 0, *wildcards); 176 wildcards++; 177 } 178 179 clientChanSock = qio_channel_socket_new_fd( 180 channel[0], &err); 181 g_assert(clientChanSock != NULL); 182 serverChanSock = qio_channel_socket_new_fd( 183 channel[1], &err); 184 g_assert(serverChanSock != NULL); 185 186 /* 187 * We have an evil loop to do the handshake in a single 188 * thread, so we need these non-blocking to avoid deadlock 189 * of ourselves 190 */ 191 qio_channel_set_blocking(QIO_CHANNEL(clientChanSock), false, NULL); 192 qio_channel_set_blocking(QIO_CHANNEL(serverChanSock), false, NULL); 193 194 /* Now the real part of the test, setup the sessions */ 195 clientChanTLS = qio_channel_tls_new_client( 196 QIO_CHANNEL(clientChanSock), clientCreds, 197 data->hostname, &err); 198 g_assert(clientChanTLS != NULL); 199 200 serverChanTLS = qio_channel_tls_new_server( 201 QIO_CHANNEL(serverChanSock), serverCreds, 202 "channeltlsacl", &err); 203 g_assert(serverChanTLS != NULL); 204 205 qio_channel_tls_handshake(clientChanTLS, 206 test_tls_handshake_done, 207 &clientHandshake, 208 NULL); 209 qio_channel_tls_handshake(serverChanTLS, 210 test_tls_handshake_done, 211 &serverHandshake, 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 close(channel[0]); 262 close(channel[1]); 263 } 264 265 266 int main(int argc, char **argv) 267 { 268 int ret; 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