1 /* 2 * QEMU I/O channel sockets test 3 * 4 * Copyright (c) 2015-2016 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 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 <http://www.gnu.org/licenses/>. 18 * 19 */ 20 21 #include "qemu/osdep.h" 22 #include "io/channel-socket.h" 23 #include "io/channel-util.h" 24 #include "io-channel-helpers.h" 25 #include "qapi/error.h" 26 27 #ifndef AI_ADDRCONFIG 28 # define AI_ADDRCONFIG 0 29 #endif 30 #ifndef AI_V4MAPPED 31 # define AI_V4MAPPED 0 32 #endif 33 #ifndef EAI_ADDRFAMILY 34 # define EAI_ADDRFAMILY 0 35 #endif 36 37 static int check_bind(const char *hostname, bool *has_proto) 38 { 39 int fd = -1; 40 struct addrinfo ai, *res = NULL; 41 int rc; 42 int ret = -1; 43 44 memset(&ai, 0, sizeof(ai)); 45 ai.ai_flags = AI_CANONNAME | AI_V4MAPPED | AI_ADDRCONFIG; 46 ai.ai_family = AF_UNSPEC; 47 ai.ai_socktype = SOCK_STREAM; 48 49 /* lookup */ 50 rc = getaddrinfo(hostname, NULL, &ai, &res); 51 if (rc != 0) { 52 if (rc == EAI_ADDRFAMILY || 53 rc == EAI_FAMILY) { 54 *has_proto = false; 55 goto done; 56 } 57 goto cleanup; 58 } 59 60 fd = qemu_socket(res->ai_family, res->ai_socktype, res->ai_protocol); 61 if (fd < 0) { 62 goto cleanup; 63 } 64 65 if (bind(fd, res->ai_addr, res->ai_addrlen) < 0) { 66 if (errno == EADDRNOTAVAIL) { 67 *has_proto = false; 68 goto done; 69 } 70 goto cleanup; 71 } 72 73 *has_proto = true; 74 done: 75 ret = 0; 76 77 cleanup: 78 if (fd != -1) { 79 close(fd); 80 } 81 if (res) { 82 freeaddrinfo(res); 83 } 84 return ret; 85 } 86 87 static int check_protocol_support(bool *has_ipv4, bool *has_ipv6) 88 { 89 if (check_bind("127.0.0.1", has_ipv4) < 0) { 90 return -1; 91 } 92 if (check_bind("::1", has_ipv6) < 0) { 93 return -1; 94 } 95 96 return 0; 97 } 98 99 100 static void test_io_channel_set_socket_bufs(QIOChannel *src, 101 QIOChannel *dst) 102 { 103 int buflen = 64 * 1024; 104 105 /* 106 * Make the socket buffers small so that we see 107 * the effects of partial reads/writes 108 */ 109 setsockopt(((QIOChannelSocket *)src)->fd, 110 SOL_SOCKET, SO_SNDBUF, 111 (char *)&buflen, 112 sizeof(buflen)); 113 114 setsockopt(((QIOChannelSocket *)dst)->fd, 115 SOL_SOCKET, SO_SNDBUF, 116 (char *)&buflen, 117 sizeof(buflen)); 118 } 119 120 121 static void test_io_channel_setup_sync(SocketAddress *listen_addr, 122 SocketAddress *connect_addr, 123 QIOChannel **src, 124 QIOChannel **dst) 125 { 126 QIOChannelSocket *lioc; 127 128 lioc = qio_channel_socket_new(); 129 qio_channel_socket_listen_sync(lioc, listen_addr, &error_abort); 130 131 if (listen_addr->type == SOCKET_ADDRESS_KIND_INET) { 132 SocketAddress *laddr = qio_channel_socket_get_local_address( 133 lioc, &error_abort); 134 135 g_free(connect_addr->u.inet.data->port); 136 connect_addr->u.inet.data->port = g_strdup(laddr->u.inet.data->port); 137 138 qapi_free_SocketAddress(laddr); 139 } 140 141 *src = QIO_CHANNEL(qio_channel_socket_new()); 142 qio_channel_socket_connect_sync( 143 QIO_CHANNEL_SOCKET(*src), connect_addr, &error_abort); 144 qio_channel_set_delay(*src, false); 145 146 qio_channel_wait(QIO_CHANNEL(lioc), G_IO_IN); 147 *dst = QIO_CHANNEL(qio_channel_socket_accept(lioc, &error_abort)); 148 g_assert(*dst); 149 150 test_io_channel_set_socket_bufs(*src, *dst); 151 152 object_unref(OBJECT(lioc)); 153 } 154 155 156 struct TestIOChannelData { 157 bool err; 158 GMainLoop *loop; 159 }; 160 161 162 static void test_io_channel_complete(Object *src, 163 Error *err, 164 gpointer opaque) 165 { 166 struct TestIOChannelData *data = opaque; 167 data->err = err != NULL; 168 g_main_loop_quit(data->loop); 169 } 170 171 172 static void test_io_channel_setup_async(SocketAddress *listen_addr, 173 SocketAddress *connect_addr, 174 QIOChannel **src, 175 QIOChannel **dst) 176 { 177 QIOChannelSocket *lioc; 178 struct TestIOChannelData data; 179 180 data.loop = g_main_loop_new(g_main_context_default(), 181 TRUE); 182 183 lioc = qio_channel_socket_new(); 184 qio_channel_socket_listen_async( 185 lioc, listen_addr, 186 test_io_channel_complete, &data, NULL); 187 188 g_main_loop_run(data.loop); 189 g_main_context_iteration(g_main_context_default(), FALSE); 190 191 g_assert(!data.err); 192 193 if (listen_addr->type == SOCKET_ADDRESS_KIND_INET) { 194 SocketAddress *laddr = qio_channel_socket_get_local_address( 195 lioc, &error_abort); 196 197 g_free(connect_addr->u.inet.data->port); 198 connect_addr->u.inet.data->port = g_strdup(laddr->u.inet.data->port); 199 200 qapi_free_SocketAddress(laddr); 201 } 202 203 *src = QIO_CHANNEL(qio_channel_socket_new()); 204 205 qio_channel_socket_connect_async( 206 QIO_CHANNEL_SOCKET(*src), connect_addr, 207 test_io_channel_complete, &data, NULL); 208 209 g_main_loop_run(data.loop); 210 g_main_context_iteration(g_main_context_default(), FALSE); 211 212 g_assert(!data.err); 213 214 qio_channel_wait(QIO_CHANNEL(lioc), G_IO_IN); 215 *dst = QIO_CHANNEL(qio_channel_socket_accept(lioc, &error_abort)); 216 g_assert(*dst); 217 218 qio_channel_set_delay(*src, false); 219 test_io_channel_set_socket_bufs(*src, *dst); 220 221 object_unref(OBJECT(lioc)); 222 223 g_main_loop_unref(data.loop); 224 } 225 226 227 static void test_io_channel(bool async, 228 SocketAddress *listen_addr, 229 SocketAddress *connect_addr, 230 bool passFD) 231 { 232 QIOChannel *src, *dst; 233 QIOChannelTest *test; 234 if (async) { 235 test_io_channel_setup_async(listen_addr, connect_addr, &src, &dst); 236 237 g_assert(!passFD || 238 qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_FD_PASS)); 239 g_assert(!passFD || 240 qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_FD_PASS)); 241 242 test = qio_channel_test_new(); 243 qio_channel_test_run_threads(test, true, src, dst); 244 qio_channel_test_validate(test); 245 246 object_unref(OBJECT(src)); 247 object_unref(OBJECT(dst)); 248 249 test_io_channel_setup_async(listen_addr, connect_addr, &src, &dst); 250 251 g_assert(!passFD || 252 qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_FD_PASS)); 253 g_assert(!passFD || 254 qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_FD_PASS)); 255 256 test = qio_channel_test_new(); 257 qio_channel_test_run_threads(test, false, src, dst); 258 qio_channel_test_validate(test); 259 260 object_unref(OBJECT(src)); 261 object_unref(OBJECT(dst)); 262 } else { 263 test_io_channel_setup_sync(listen_addr, connect_addr, &src, &dst); 264 265 g_assert(!passFD || 266 qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_FD_PASS)); 267 g_assert(!passFD || 268 qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_FD_PASS)); 269 270 test = qio_channel_test_new(); 271 qio_channel_test_run_threads(test, true, src, dst); 272 qio_channel_test_validate(test); 273 274 object_unref(OBJECT(src)); 275 object_unref(OBJECT(dst)); 276 277 test_io_channel_setup_sync(listen_addr, connect_addr, &src, &dst); 278 279 g_assert(!passFD || 280 qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_FD_PASS)); 281 g_assert(!passFD || 282 qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_FD_PASS)); 283 284 test = qio_channel_test_new(); 285 qio_channel_test_run_threads(test, false, src, dst); 286 qio_channel_test_validate(test); 287 288 object_unref(OBJECT(src)); 289 object_unref(OBJECT(dst)); 290 } 291 } 292 293 294 static void test_io_channel_ipv4(bool async) 295 { 296 SocketAddress *listen_addr = g_new0(SocketAddress, 1); 297 SocketAddress *connect_addr = g_new0(SocketAddress, 1); 298 299 listen_addr->type = SOCKET_ADDRESS_KIND_INET; 300 listen_addr->u.inet.data = g_new(InetSocketAddress, 1); 301 *listen_addr->u.inet.data = (InetSocketAddress) { 302 .host = g_strdup("127.0.0.1"), 303 .port = NULL, /* Auto-select */ 304 }; 305 306 connect_addr->type = SOCKET_ADDRESS_KIND_INET; 307 connect_addr->u.inet.data = g_new(InetSocketAddress, 1); 308 *connect_addr->u.inet.data = (InetSocketAddress) { 309 .host = g_strdup("127.0.0.1"), 310 .port = NULL, /* Filled in later */ 311 }; 312 313 test_io_channel(async, listen_addr, connect_addr, false); 314 315 qapi_free_SocketAddress(listen_addr); 316 qapi_free_SocketAddress(connect_addr); 317 } 318 319 320 static void test_io_channel_ipv4_sync(void) 321 { 322 return test_io_channel_ipv4(false); 323 } 324 325 326 static void test_io_channel_ipv4_async(void) 327 { 328 return test_io_channel_ipv4(true); 329 } 330 331 332 static void test_io_channel_ipv6(bool async) 333 { 334 SocketAddress *listen_addr = g_new0(SocketAddress, 1); 335 SocketAddress *connect_addr = g_new0(SocketAddress, 1); 336 337 listen_addr->type = SOCKET_ADDRESS_KIND_INET; 338 listen_addr->u.inet.data = g_new(InetSocketAddress, 1); 339 *listen_addr->u.inet.data = (InetSocketAddress) { 340 .host = g_strdup("::1"), 341 .port = NULL, /* Auto-select */ 342 }; 343 344 connect_addr->type = SOCKET_ADDRESS_KIND_INET; 345 connect_addr->u.inet.data = g_new(InetSocketAddress, 1); 346 *connect_addr->u.inet.data = (InetSocketAddress) { 347 .host = g_strdup("::1"), 348 .port = NULL, /* Filled in later */ 349 }; 350 351 test_io_channel(async, listen_addr, connect_addr, false); 352 353 qapi_free_SocketAddress(listen_addr); 354 qapi_free_SocketAddress(connect_addr); 355 } 356 357 358 static void test_io_channel_ipv6_sync(void) 359 { 360 return test_io_channel_ipv6(false); 361 } 362 363 364 static void test_io_channel_ipv6_async(void) 365 { 366 return test_io_channel_ipv6(true); 367 } 368 369 370 #ifndef _WIN32 371 static void test_io_channel_unix(bool async) 372 { 373 SocketAddress *listen_addr = g_new0(SocketAddress, 1); 374 SocketAddress *connect_addr = g_new0(SocketAddress, 1); 375 376 #define TEST_SOCKET "test-io-channel-socket.sock" 377 listen_addr->type = SOCKET_ADDRESS_KIND_UNIX; 378 listen_addr->u.q_unix.data = g_new0(UnixSocketAddress, 1); 379 listen_addr->u.q_unix.data->path = g_strdup(TEST_SOCKET); 380 381 connect_addr->type = SOCKET_ADDRESS_KIND_UNIX; 382 connect_addr->u.q_unix.data = g_new0(UnixSocketAddress, 1); 383 connect_addr->u.q_unix.data->path = g_strdup(TEST_SOCKET); 384 385 test_io_channel(async, listen_addr, connect_addr, true); 386 387 qapi_free_SocketAddress(listen_addr); 388 qapi_free_SocketAddress(connect_addr); 389 unlink(TEST_SOCKET); 390 } 391 392 393 static void test_io_channel_unix_sync(void) 394 { 395 return test_io_channel_unix(false); 396 } 397 398 399 static void test_io_channel_unix_async(void) 400 { 401 return test_io_channel_unix(true); 402 } 403 404 static void test_io_channel_unix_fd_pass(void) 405 { 406 SocketAddress *listen_addr = g_new0(SocketAddress, 1); 407 SocketAddress *connect_addr = g_new0(SocketAddress, 1); 408 QIOChannel *src, *dst; 409 int testfd; 410 int fdsend[3]; 411 int *fdrecv = NULL; 412 size_t nfdrecv = 0; 413 size_t i; 414 char bufsend[12], bufrecv[12]; 415 struct iovec iosend[1], iorecv[1]; 416 417 #define TEST_SOCKET "test-io-channel-socket.sock" 418 #define TEST_FILE "test-io-channel-socket.txt" 419 420 testfd = open(TEST_FILE, O_RDWR|O_TRUNC|O_CREAT, 0700); 421 g_assert(testfd != -1); 422 fdsend[0] = testfd; 423 fdsend[1] = testfd; 424 fdsend[2] = testfd; 425 426 listen_addr->type = SOCKET_ADDRESS_KIND_UNIX; 427 listen_addr->u.q_unix.data = g_new0(UnixSocketAddress, 1); 428 listen_addr->u.q_unix.data->path = g_strdup(TEST_SOCKET); 429 430 connect_addr->type = SOCKET_ADDRESS_KIND_UNIX; 431 connect_addr->u.q_unix.data = g_new0(UnixSocketAddress, 1); 432 connect_addr->u.q_unix.data->path = g_strdup(TEST_SOCKET); 433 434 test_io_channel_setup_sync(listen_addr, connect_addr, &src, &dst); 435 436 memcpy(bufsend, "Hello World", G_N_ELEMENTS(bufsend)); 437 438 iosend[0].iov_base = bufsend; 439 iosend[0].iov_len = G_N_ELEMENTS(bufsend); 440 441 iorecv[0].iov_base = bufrecv; 442 iorecv[0].iov_len = G_N_ELEMENTS(bufrecv); 443 444 g_assert(qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_FD_PASS)); 445 g_assert(qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_FD_PASS)); 446 447 qio_channel_writev_full(src, 448 iosend, 449 G_N_ELEMENTS(iosend), 450 fdsend, 451 G_N_ELEMENTS(fdsend), 452 &error_abort); 453 454 qio_channel_readv_full(dst, 455 iorecv, 456 G_N_ELEMENTS(iorecv), 457 &fdrecv, 458 &nfdrecv, 459 &error_abort); 460 461 g_assert(nfdrecv == G_N_ELEMENTS(fdsend)); 462 /* Each recvd FD should be different from sent FD */ 463 for (i = 0; i < nfdrecv; i++) { 464 g_assert_cmpint(fdrecv[i], !=, testfd); 465 } 466 /* Each recvd FD should be different from each other */ 467 g_assert_cmpint(fdrecv[0], !=, fdrecv[1]); 468 g_assert_cmpint(fdrecv[0], !=, fdrecv[2]); 469 g_assert_cmpint(fdrecv[1], !=, fdrecv[2]); 470 471 /* Check the I/O buf we sent at the same time matches */ 472 g_assert(memcmp(bufsend, bufrecv, G_N_ELEMENTS(bufsend)) == 0); 473 474 /* Write some data into the FD we received */ 475 g_assert(write(fdrecv[0], bufsend, G_N_ELEMENTS(bufsend)) == 476 G_N_ELEMENTS(bufsend)); 477 478 /* Read data from the original FD and make sure it matches */ 479 memset(bufrecv, 0, G_N_ELEMENTS(bufrecv)); 480 g_assert(lseek(testfd, 0, SEEK_SET) == 0); 481 g_assert(read(testfd, bufrecv, G_N_ELEMENTS(bufrecv)) == 482 G_N_ELEMENTS(bufrecv)); 483 g_assert(memcmp(bufsend, bufrecv, G_N_ELEMENTS(bufsend)) == 0); 484 485 object_unref(OBJECT(src)); 486 object_unref(OBJECT(dst)); 487 qapi_free_SocketAddress(listen_addr); 488 qapi_free_SocketAddress(connect_addr); 489 unlink(TEST_SOCKET); 490 unlink(TEST_FILE); 491 close(testfd); 492 for (i = 0; i < nfdrecv; i++) { 493 close(fdrecv[i]); 494 } 495 g_free(fdrecv); 496 } 497 #endif /* _WIN32 */ 498 499 500 static void test_io_channel_ipv4_fd(void) 501 { 502 QIOChannel *ioc; 503 int fd = -1; 504 struct sockaddr_in sa = { 505 .sin_family = AF_INET, 506 .sin_addr = { 507 .s_addr = htonl(INADDR_LOOPBACK), 508 } 509 /* Leave port unset for auto-assign */ 510 }; 511 socklen_t salen = sizeof(sa); 512 513 fd = socket(AF_INET, SOCK_STREAM, 0); 514 g_assert_cmpint(fd, >, -1); 515 516 g_assert_cmpint(bind(fd, (struct sockaddr *)&sa, salen), ==, 0); 517 518 ioc = qio_channel_new_fd(fd, &error_abort); 519 520 g_assert_cmpstr(object_get_typename(OBJECT(ioc)), 521 ==, 522 TYPE_QIO_CHANNEL_SOCKET); 523 524 object_unref(OBJECT(ioc)); 525 } 526 527 528 int main(int argc, char **argv) 529 { 530 bool has_ipv4, has_ipv6; 531 532 module_call_init(MODULE_INIT_QOM); 533 socket_init(); 534 535 g_test_init(&argc, &argv, NULL); 536 537 /* We're creating actual IPv4/6 sockets, so we should 538 * check if the host running tests actually supports 539 * each protocol to avoid breaking tests on machines 540 * with either IPv4 or IPv6 disabled. 541 */ 542 if (check_protocol_support(&has_ipv4, &has_ipv6) < 0) { 543 return 1; 544 } 545 546 if (has_ipv4) { 547 g_test_add_func("/io/channel/socket/ipv4-sync", 548 test_io_channel_ipv4_sync); 549 g_test_add_func("/io/channel/socket/ipv4-async", 550 test_io_channel_ipv4_async); 551 g_test_add_func("/io/channel/socket/ipv4-fd", 552 test_io_channel_ipv4_fd); 553 } 554 if (has_ipv6) { 555 g_test_add_func("/io/channel/socket/ipv6-sync", 556 test_io_channel_ipv6_sync); 557 g_test_add_func("/io/channel/socket/ipv6-async", 558 test_io_channel_ipv6_async); 559 } 560 561 #ifndef _WIN32 562 g_test_add_func("/io/channel/socket/unix-sync", 563 test_io_channel_unix_sync); 564 g_test_add_func("/io/channel/socket/unix-async", 565 test_io_channel_unix_async); 566 g_test_add_func("/io/channel/socket/unix-fd-pass", 567 test_io_channel_unix_fd_pass); 568 #endif /* _WIN32 */ 569 570 return g_test_run(); 571 } 572