tests/unit/test-io-channel-socket.c

   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 2.1 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 <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 "socket-helpers.h"
  26 #include "qapi/error.h"
  27 #include "qemu/module.h"
  28 #include "qemu/main-loop.h"
  29
  30
  31 static void test_io_channel_set_socket_bufs(QIOChannel *src,
  32                                             QIOChannel *dst)
  33 {
  34     int buflen = 64 * 1024;
  35
  36     /*
  37      * Make the socket buffers small so that we see
  38      * the effects of partial reads/writes
  39      */
  40     setsockopt(((QIOChannelSocket *)src)->fd,
  41                SOL_SOCKET, SO_SNDBUF,
  42                (char *)&buflen,
  43                sizeof(buflen));
  44
  45     setsockopt(((QIOChannelSocket *)dst)->fd,
  46                SOL_SOCKET, SO_SNDBUF,
  47                (char *)&buflen,
  48                sizeof(buflen));
  49 }
  50
  51
  52 static void test_io_channel_setup_sync(SocketAddress *listen_addr,
  53                                        SocketAddress *connect_addr,
  54                                        QIOChannel **srv,
  55                                        QIOChannel **src,
  56                                        QIOChannel **dst)
  57 {
  58     QIOChannelSocket *lioc;
  59
  60     lioc = qio_channel_socket_new();
  61     qio_channel_socket_listen_sync(lioc, listen_addr, 1, &error_abort);
  62
  63     if (listen_addr->type == SOCKET_ADDRESS_TYPE_INET) {
  64         SocketAddress *laddr = qio_channel_socket_get_local_address(
  65             lioc, &error_abort);
  66
  67         g_free(connect_addr->u.inet.port);
  68         connect_addr->u.inet.port = g_strdup(laddr->u.inet.port);
  69
  70         qapi_free_SocketAddress(laddr);
  71     }
  72
  73     *src = QIO_CHANNEL(qio_channel_socket_new());
  74     qio_channel_socket_connect_sync(
  75         QIO_CHANNEL_SOCKET(*src), connect_addr, &error_abort);
  76     qio_channel_set_delay(*src, false);
  77
  78     qio_channel_wait(QIO_CHANNEL(lioc), G_IO_IN);
  79     *dst = QIO_CHANNEL(qio_channel_socket_accept(lioc, &error_abort));
  80     g_assert(*dst);
  81
  82     test_io_channel_set_socket_bufs(*src, *dst);
  83
  84     *srv = QIO_CHANNEL(lioc);
  85 }
  86
  87
  88 struct TestIOChannelData {
  89     bool err;
  90     GMainLoop *loop;
  91 };
  92
  93
  94 static void test_io_channel_complete(QIOTask *task,
  95                                      gpointer opaque)
  96 {
  97     struct TestIOChannelData *data = opaque;
  98     data->err = qio_task_propagate_error(task, NULL);
  99     g_main_loop_quit(data->loop);
 100 }
 101
 102
 103 static void test_io_channel_setup_async(SocketAddress *listen_addr,
 104                                         SocketAddress *connect_addr,
 105                                         QIOChannel **srv,
 106                                         QIOChannel **src,
 107                                         QIOChannel **dst)
 108 {
 109     QIOChannelSocket *lioc;
 110     struct TestIOChannelData data;
 111
 112     data.loop = g_main_loop_new(g_main_context_default(),
 113                                 TRUE);
 114
 115     lioc = qio_channel_socket_new();
 116     qio_channel_socket_listen_async(
 117         lioc, listen_addr, 1,
 118         test_io_channel_complete, &data, NULL, NULL);
 119
 120     g_main_loop_run(data.loop);
 121     g_main_context_iteration(g_main_context_default(), FALSE);
 122
 123     g_assert(!data.err);
 124
 125     if (listen_addr->type == SOCKET_ADDRESS_TYPE_INET) {
 126         SocketAddress *laddr = qio_channel_socket_get_local_address(
 127             lioc, &error_abort);
 128
 129         g_free(connect_addr->u.inet.port);
 130         connect_addr->u.inet.port = g_strdup(laddr->u.inet.port);
 131
 132         qapi_free_SocketAddress(laddr);
 133     }
 134
 135     *src = QIO_CHANNEL(qio_channel_socket_new());
 136
 137     qio_channel_socket_connect_async(
 138         QIO_CHANNEL_SOCKET(*src), connect_addr,
 139         test_io_channel_complete, &data, NULL, NULL);
 140
 141     g_main_loop_run(data.loop);
 142     g_main_context_iteration(g_main_context_default(), FALSE);
 143
 144     g_assert(!data.err);
 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     qio_channel_set_delay(*src, false);
 151     test_io_channel_set_socket_bufs(*src, *dst);
 152
 153     *srv = QIO_CHANNEL(lioc);
 154
 155     g_main_loop_unref(data.loop);
 156 }
 157
 158
 159 static void test_io_channel_socket_path_exists(SocketAddress *addr,
 160                                                bool expectExists)
 161 {
 162     if (addr->type != SOCKET_ADDRESS_TYPE_UNIX) {
 163         return;
 164     }
 165
 166     g_assert(g_file_test(addr->u.q_unix.path,
 167                          G_FILE_TEST_EXISTS) == expectExists);
 168 }
 169
 170
 171 static void test_io_channel(bool async,
 172                             SocketAddress *listen_addr,
 173                             SocketAddress *connect_addr,
 174                             bool passFD)
 175 {
 176     QIOChannel *src, *dst, *srv;
 177     QIOChannelTest *test;
 178     if (async) {
 179         test_io_channel_setup_async(listen_addr, connect_addr,
 180                                     &srv, &src, &dst);
 181
 182         g_assert(!passFD ||
 183                  qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_FD_PASS));
 184         g_assert(!passFD ||
 185                  qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_FD_PASS));
 186         g_assert(qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_SHUTDOWN));
 187         g_assert(qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_SHUTDOWN));
 188
 189         test_io_channel_socket_path_exists(listen_addr, true);
 190
 191         test = qio_channel_test_new();
 192         qio_channel_test_run_threads(test, true, src, dst);
 193         qio_channel_test_validate(test);
 194
 195         test_io_channel_socket_path_exists(listen_addr, true);
 196
 197         /* unref without close, to ensure finalize() cleans up */
 198
 199         object_unref(OBJECT(src));
 200         object_unref(OBJECT(dst));
 201         test_io_channel_socket_path_exists(listen_addr, true);
 202
 203         object_unref(OBJECT(srv));
 204         test_io_channel_socket_path_exists(listen_addr, false);
 205
 206         test_io_channel_setup_async(listen_addr, connect_addr,
 207                                     &srv, &src, &dst);
 208
 209         g_assert(!passFD ||
 210                  qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_FD_PASS));
 211         g_assert(!passFD ||
 212                  qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_FD_PASS));
 213         g_assert(qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_SHUTDOWN));
 214         g_assert(qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_SHUTDOWN));
 215
 216         test = qio_channel_test_new();
 217         qio_channel_test_run_threads(test, false, src, dst);
 218         qio_channel_test_validate(test);
 219
 220         /* close before unref, to ensure finalize copes with already closed */
 221
 222         qio_channel_close(src, &error_abort);
 223         qio_channel_close(dst, &error_abort);
 224         test_io_channel_socket_path_exists(listen_addr, true);
 225
 226         object_unref(OBJECT(src));
 227         object_unref(OBJECT(dst));
 228         test_io_channel_socket_path_exists(listen_addr, true);
 229
 230         qio_channel_close(srv, &error_abort);
 231         test_io_channel_socket_path_exists(listen_addr, false);
 232
 233         object_unref(OBJECT(srv));
 234         test_io_channel_socket_path_exists(listen_addr, false);
 235     } else {
 236         test_io_channel_setup_sync(listen_addr, connect_addr,
 237                                    &srv, &src, &dst);
 238
 239         g_assert(!passFD ||
 240                  qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_FD_PASS));
 241         g_assert(!passFD ||
 242                  qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_FD_PASS));
 243         g_assert(qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_SHUTDOWN));
 244         g_assert(qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_SHUTDOWN));
 245
 246         test_io_channel_socket_path_exists(listen_addr, true);
 247
 248         test = qio_channel_test_new();
 249         qio_channel_test_run_threads(test, true, src, dst);
 250         qio_channel_test_validate(test);
 251
 252         test_io_channel_socket_path_exists(listen_addr, true);
 253
 254         /* unref without close, to ensure finalize() cleans up */
 255
 256         object_unref(OBJECT(src));
 257         object_unref(OBJECT(dst));
 258         test_io_channel_socket_path_exists(listen_addr, true);
 259
 260         object_unref(OBJECT(srv));
 261         test_io_channel_socket_path_exists(listen_addr, false);
 262
 263         test_io_channel_setup_sync(listen_addr, connect_addr,
 264                                    &srv, &src, &dst);
 265
 266         g_assert(!passFD ||
 267                  qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_FD_PASS));
 268         g_assert(!passFD ||
 269                  qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_FD_PASS));
 270         g_assert(qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_SHUTDOWN));
 271         g_assert(qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_SHUTDOWN));
 272
 273         test = qio_channel_test_new();
 274         qio_channel_test_run_threads(test, false, src, dst);
 275         qio_channel_test_validate(test);
 276
 277         test_io_channel_socket_path_exists(listen_addr, true);
 278
 279         /* close before unref, to ensure finalize copes with already closed */
 280
 281         qio_channel_close(src, &error_abort);
 282         qio_channel_close(dst, &error_abort);
 283         test_io_channel_socket_path_exists(listen_addr, true);
 284
 285         object_unref(OBJECT(src));
 286         object_unref(OBJECT(dst));
 287         test_io_channel_socket_path_exists(listen_addr, true);
 288
 289         qio_channel_close(srv, &error_abort);
 290         test_io_channel_socket_path_exists(listen_addr, false);
 291
 292         object_unref(OBJECT(srv));
 293         test_io_channel_socket_path_exists(listen_addr, false);
 294     }
 295 }
 296
 297
 298 static void test_io_channel_ipv4(bool async)
 299 {
 300     SocketAddress *listen_addr = g_new0(SocketAddress, 1);
 301     SocketAddress *connect_addr = g_new0(SocketAddress, 1);
 302
 303     listen_addr->type = SOCKET_ADDRESS_TYPE_INET;
 304     listen_addr->u.inet = (InetSocketAddress) {
 305         .host = g_strdup("127.0.0.1"),
 306         .port = NULL, /* Auto-select */
 307     };
 308
 309     connect_addr->type = SOCKET_ADDRESS_TYPE_INET;
 310     connect_addr->u.inet = (InetSocketAddress) {
 311         .host = g_strdup("127.0.0.1"),
 312         .port = NULL, /* Filled in later */
 313     };
 314
 315     test_io_channel(async, listen_addr, connect_addr, false);
 316
 317     qapi_free_SocketAddress(listen_addr);
 318     qapi_free_SocketAddress(connect_addr);
 319 }
 320
 321
 322 static void test_io_channel_ipv4_sync(void)
 323 {
 324     return test_io_channel_ipv4(false);
 325 }
 326
 327
 328 static void test_io_channel_ipv4_async(void)
 329 {
 330     return test_io_channel_ipv4(true);
 331 }
 332
 333
 334 static void test_io_channel_ipv6(bool async)
 335 {
 336     SocketAddress *listen_addr = g_new0(SocketAddress, 1);
 337     SocketAddress *connect_addr = g_new0(SocketAddress, 1);
 338
 339     listen_addr->type = SOCKET_ADDRESS_TYPE_INET;
 340     listen_addr->u.inet = (InetSocketAddress) {
 341         .host = g_strdup("::1"),
 342         .port = NULL, /* Auto-select */
 343     };
 344
 345     connect_addr->type = SOCKET_ADDRESS_TYPE_INET;
 346     connect_addr->u.inet = (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_TYPE_UNIX;
 378     listen_addr->u.q_unix.path = g_strdup(TEST_SOCKET);
 379
 380     connect_addr->type = SOCKET_ADDRESS_TYPE_UNIX;
 381     connect_addr->u.q_unix.path = g_strdup(TEST_SOCKET);
 382
 383     test_io_channel(async, listen_addr, connect_addr, true);
 384
 385     qapi_free_SocketAddress(listen_addr);
 386     qapi_free_SocketAddress(connect_addr);
 387 }
 388
 389
 390 static void test_io_channel_unix_sync(void)
 391 {
 392     return test_io_channel_unix(false);
 393 }
 394
 395
 396 static void test_io_channel_unix_async(void)
 397 {
 398     return test_io_channel_unix(true);
 399 }
 400
 401 static void test_io_channel_unix_fd_pass(void)
 402 {
 403     SocketAddress *listen_addr = g_new0(SocketAddress, 1);
 404     SocketAddress *connect_addr = g_new0(SocketAddress, 1);
 405     QIOChannel *src, *dst, *srv;
 406     int testfd;
 407     int fdsend[3];
 408     int *fdrecv = NULL;
 409     size_t nfdrecv = 0;
 410     size_t i;
 411     char bufsend[12], bufrecv[12];
 412     struct iovec iosend[1], iorecv[1];
 413
 414 #define TEST_SOCKET "test-io-channel-socket.sock"
 415 #define TEST_FILE "test-io-channel-socket.txt"
 416
 417     testfd = open(TEST_FILE, O_RDWR|O_TRUNC|O_CREAT, 0700);
 418     g_assert(testfd != -1);
 419     fdsend[0] = testfd;
 420     fdsend[1] = testfd;
 421     fdsend[2] = testfd;
 422
 423     listen_addr->type = SOCKET_ADDRESS_TYPE_UNIX;
 424     listen_addr->u.q_unix.path = g_strdup(TEST_SOCKET);
 425
 426     connect_addr->type = SOCKET_ADDRESS_TYPE_UNIX;
 427     connect_addr->u.q_unix.path = g_strdup(TEST_SOCKET);
 428
 429     test_io_channel_setup_sync(listen_addr, connect_addr, &srv, &src, &dst);
 430
 431     memcpy(bufsend, "Hello World", G_N_ELEMENTS(bufsend));
 432
 433     iosend[0].iov_base = bufsend;
 434     iosend[0].iov_len = G_N_ELEMENTS(bufsend);
 435
 436     iorecv[0].iov_base = bufrecv;
 437     iorecv[0].iov_len = G_N_ELEMENTS(bufrecv);
 438
 439     g_assert(qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_FD_PASS));
 440     g_assert(qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_FD_PASS));
 441
 442     qio_channel_writev_full(src,
 443                             iosend,
 444                             G_N_ELEMENTS(iosend),
 445                             fdsend,
 446                             G_N_ELEMENTS(fdsend),
 447                             &error_abort);
 448
 449     qio_channel_readv_full(dst,
 450                            iorecv,
 451                            G_N_ELEMENTS(iorecv),
 452                            &fdrecv,
 453                            &nfdrecv,
 454                            &error_abort);
 455
 456     g_assert(nfdrecv == G_N_ELEMENTS(fdsend));
 457     /* Each recvd FD should be different from sent FD */
 458     for (i = 0; i < nfdrecv; i++) {
 459         g_assert_cmpint(fdrecv[i], !=, testfd);
 460     }
 461     /* Each recvd FD should be different from each other */
 462     g_assert_cmpint(fdrecv[0], !=, fdrecv[1]);
 463     g_assert_cmpint(fdrecv[0], !=, fdrecv[2]);
 464     g_assert_cmpint(fdrecv[1], !=, fdrecv[2]);
 465
 466     /* Check the I/O buf we sent at the same time matches */
 467     g_assert(memcmp(bufsend, bufrecv, G_N_ELEMENTS(bufsend)) == 0);
 468
 469     /* Write some data into the FD we received */
 470     g_assert(write(fdrecv[0], bufsend, G_N_ELEMENTS(bufsend)) ==
 471              G_N_ELEMENTS(bufsend));
 472
 473     /* Read data from the original FD and make sure it matches */
 474     memset(bufrecv, 0, G_N_ELEMENTS(bufrecv));
 475     g_assert(lseek(testfd, 0, SEEK_SET) == 0);
 476     g_assert(read(testfd, bufrecv, G_N_ELEMENTS(bufrecv)) ==
 477              G_N_ELEMENTS(bufrecv));
 478     g_assert(memcmp(bufsend, bufrecv, G_N_ELEMENTS(bufsend)) == 0);
 479
 480     object_unref(OBJECT(src));
 481     object_unref(OBJECT(dst));
 482     object_unref(OBJECT(srv));
 483     qapi_free_SocketAddress(listen_addr);
 484     qapi_free_SocketAddress(connect_addr);
 485     unlink(TEST_SOCKET);
 486     unlink(TEST_FILE);
 487     close(testfd);
 488     for (i = 0; i < nfdrecv; i++) {
 489         close(fdrecv[i]);
 490     }
 491     g_free(fdrecv);
 492 }
 493
 494 static void test_io_channel_unix_listen_cleanup(void)
 495 {
 496     QIOChannelSocket *ioc;
 497     struct sockaddr_un un;
 498     int sock;
 499
 500 #define TEST_SOCKET "test-io-channel-socket.sock"
 501
 502     ioc = qio_channel_socket_new();
 503
 504     /* Manually bind ioc without calling the qio api to avoid setting
 505      * the LISTEN feature */
 506     sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0);
 507     memset(&un, 0, sizeof(un));
 508     un.sun_family = AF_UNIX;
 509     snprintf(un.sun_path, sizeof(un.sun_path), "%s", TEST_SOCKET);
 510     unlink(TEST_SOCKET);
 511     bind(sock, (struct sockaddr *)&un, sizeof(un));
 512     ioc->fd = sock;
 513     ioc->localAddrLen = sizeof(ioc->localAddr);
 514     getsockname(sock, (struct sockaddr *)&ioc->localAddr,
 515                 &ioc->localAddrLen);
 516
 517     g_assert(g_file_test(TEST_SOCKET, G_FILE_TEST_EXISTS));
 518     object_unref(OBJECT(ioc));
 519     g_assert(g_file_test(TEST_SOCKET, G_FILE_TEST_EXISTS));
 520
 521     unlink(TEST_SOCKET);
 522 }
 523
 524 #endif /* _WIN32 */
 525
 526
 527 static void test_io_channel_ipv4_fd(void)
 528 {
 529     QIOChannel *ioc;
 530     int fd = -1;
 531     struct sockaddr_in sa = {
 532         .sin_family = AF_INET,
 533         .sin_addr = {
 534             .s_addr =  htonl(INADDR_LOOPBACK),
 535         }
 536         /* Leave port unset for auto-assign */
 537     };
 538     socklen_t salen = sizeof(sa);
 539
 540     fd = socket(AF_INET, SOCK_STREAM, 0);
 541     g_assert_cmpint(fd, >, -1);
 542
 543     g_assert_cmpint(bind(fd, (struct sockaddr *)&sa, salen), ==, 0);
 544
 545     ioc = qio_channel_new_fd(fd, &error_abort);
 546
 547     g_assert_cmpstr(object_get_typename(OBJECT(ioc)),
 548                     ==,
 549                     TYPE_QIO_CHANNEL_SOCKET);
 550
 551     object_unref(OBJECT(ioc));
 552 }
 553
 554
 555 int main(int argc, char **argv)
 556 {
 557     bool has_ipv4, has_ipv6;
 558
 559     module_call_init(MODULE_INIT_QOM);
 560     qemu_init_main_loop(&error_abort);
 561     socket_init();
 562
 563     g_test_init(&argc, &argv, NULL);
 564
 565     /* We're creating actual IPv4/6 sockets, so we should
 566      * check if the host running tests actually supports
 567      * each protocol to avoid breaking tests on machines
 568      * with either IPv4 or IPv6 disabled.
 569      */
 570     if (socket_check_protocol_support(&has_ipv4, &has_ipv6) < 0) {
 571         g_printerr("socket_check_protocol_support() failed\n");
 572         goto end;
 573     }
 574
 575     if (has_ipv4) {
 576         g_test_add_func("/io/channel/socket/ipv4-sync",
 577                         test_io_channel_ipv4_sync);
 578         g_test_add_func("/io/channel/socket/ipv4-async",
 579                         test_io_channel_ipv4_async);
 580         g_test_add_func("/io/channel/socket/ipv4-fd",
 581                         test_io_channel_ipv4_fd);
 582     }
 583     if (has_ipv6) {
 584         g_test_add_func("/io/channel/socket/ipv6-sync",
 585                         test_io_channel_ipv6_sync);
 586         g_test_add_func("/io/channel/socket/ipv6-async",
 587                         test_io_channel_ipv6_async);
 588     }
 589
 590 #ifndef _WIN32
 591     g_test_add_func("/io/channel/socket/unix-sync",
 592                     test_io_channel_unix_sync);
 593     g_test_add_func("/io/channel/socket/unix-async",
 594                     test_io_channel_unix_async);
 595     g_test_add_func("/io/channel/socket/unix-fd-pass",
 596                     test_io_channel_unix_fd_pass);
 597     g_test_add_func("/io/channel/socket/unix-listen-cleanup",
 598                     test_io_channel_unix_listen_cleanup);
 599 #endif /* _WIN32 */
 600
 601 end:
 602     return g_test_run();
 603 }