tests/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 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
  29
  30 static void test_io_channel_set_socket_bufs(QIOChannel *src,
  31                                             QIOChannel *dst)
  32 {
  33     int buflen = 64 * 1024;
  34
  35     /*
  36      * Make the socket buffers small so that we see
  37      * the effects of partial reads/writes
  38      */
  39     setsockopt(((QIOChannelSocket *)src)->fd,
  40                SOL_SOCKET, SO_SNDBUF,
  41                (char *)&buflen,
  42                sizeof(buflen));
  43
  44     setsockopt(((QIOChannelSocket *)dst)->fd,
  45                SOL_SOCKET, SO_SNDBUF,
  46                (char *)&buflen,
  47                sizeof(buflen));
  48 }
  49
  50
  51 static void test_io_channel_setup_sync(SocketAddress *listen_addr,
  52                                        SocketAddress *connect_addr,
  53                                        QIOChannel **srv,
  54                                        QIOChannel **src,
  55                                        QIOChannel **dst)
  56 {
  57     QIOChannelSocket *lioc;
  58
  59     lioc = qio_channel_socket_new();
  60     qio_channel_socket_listen_sync(lioc, listen_addr, 1, &error_abort);
  61
  62     if (listen_addr->type == SOCKET_ADDRESS_TYPE_INET) {
  63         SocketAddress *laddr = qio_channel_socket_get_local_address(
  64             lioc, &error_abort);
  65
  66         g_free(connect_addr->u.inet.port);
  67         connect_addr->u.inet.port = g_strdup(laddr->u.inet.port);
  68
  69         qapi_free_SocketAddress(laddr);
  70     }
  71
  72     *src = QIO_CHANNEL(qio_channel_socket_new());
  73     qio_channel_socket_connect_sync(
  74         QIO_CHANNEL_SOCKET(*src), connect_addr, &error_abort);
  75     qio_channel_set_delay(*src, false);
  76
  77     qio_channel_wait(QIO_CHANNEL(lioc), G_IO_IN);
  78     *dst = QIO_CHANNEL(qio_channel_socket_accept(lioc, &error_abort));
  79     g_assert(*dst);
  80
  81     test_io_channel_set_socket_bufs(*src, *dst);
  82
  83     *srv = QIO_CHANNEL(lioc);
  84 }
  85
  86
  87 struct TestIOChannelData {
  88     bool err;
  89     GMainLoop *loop;
  90 };
  91
  92
  93 static void test_io_channel_complete(QIOTask *task,
  94                                      gpointer opaque)
  95 {
  96     struct TestIOChannelData *data = opaque;
  97     data->err = qio_task_propagate_error(task, NULL);
  98     g_main_loop_quit(data->loop);
  99 }
 100
 101
 102 static void test_io_channel_setup_async(SocketAddress *listen_addr,
 103                                         SocketAddress *connect_addr,
 104                                         QIOChannel **srv,
 105                                         QIOChannel **src,
 106                                         QIOChannel **dst)
 107 {
 108     QIOChannelSocket *lioc;
 109     struct TestIOChannelData data;
 110
 111     data.loop = g_main_loop_new(g_main_context_default(),
 112                                 TRUE);
 113
 114     lioc = qio_channel_socket_new();
 115     qio_channel_socket_listen_async(
 116         lioc, listen_addr, 1,
 117         test_io_channel_complete, &data, NULL, NULL);
 118
 119     g_main_loop_run(data.loop);
 120     g_main_context_iteration(g_main_context_default(), FALSE);
 121
 122     g_assert(!data.err);
 123
 124     if (listen_addr->type == SOCKET_ADDRESS_TYPE_INET) {
 125         SocketAddress *laddr = qio_channel_socket_get_local_address(
 126             lioc, &error_abort);
 127
 128         g_free(connect_addr->u.inet.port);
 129         connect_addr->u.inet.port = g_strdup(laddr->u.inet.port);
 130
 131         qapi_free_SocketAddress(laddr);
 132     }
 133
 134     *src = QIO_CHANNEL(qio_channel_socket_new());
 135
 136     qio_channel_socket_connect_async(
 137         QIO_CHANNEL_SOCKET(*src), connect_addr,
 138         test_io_channel_complete, &data, NULL, NULL);
 139
 140     g_main_loop_run(data.loop);
 141     g_main_context_iteration(g_main_context_default(), FALSE);
 142
 143     g_assert(!data.err);
 144
 145     qio_channel_wait(QIO_CHANNEL(lioc), G_IO_IN);
 146     *dst = QIO_CHANNEL(qio_channel_socket_accept(lioc, &error_abort));
 147     g_assert(*dst);
 148
 149     qio_channel_set_delay(*src, false);
 150     test_io_channel_set_socket_bufs(*src, *dst);
 151
 152     *srv = QIO_CHANNEL(lioc);
 153
 154     g_main_loop_unref(data.loop);
 155 }
 156
 157
 158 static void test_io_channel_socket_path_exists(SocketAddress *addr,
 159                                                bool expectExists)
 160 {
 161     if (addr->type != SOCKET_ADDRESS_TYPE_UNIX) {
 162         return;
 163     }
 164
 165     g_assert(g_file_test(addr->u.q_unix.path,
 166                          G_FILE_TEST_EXISTS) == expectExists);
 167 }
 168
 169
 170 static void test_io_channel(bool async,
 171                             SocketAddress *listen_addr,
 172                             SocketAddress *connect_addr,
 173                             bool passFD)
 174 {
 175     QIOChannel *src, *dst, *srv;
 176     QIOChannelTest *test;
 177     if (async) {
 178         test_io_channel_setup_async(listen_addr, connect_addr,
 179                                     &srv, &src, &dst);
 180
 181         g_assert(!passFD ||
 182                  qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_FD_PASS));
 183         g_assert(!passFD ||
 184                  qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_FD_PASS));
 185         g_assert(qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_SHUTDOWN));
 186         g_assert(qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_SHUTDOWN));
 187
 188         test_io_channel_socket_path_exists(listen_addr, true);
 189
 190         test = qio_channel_test_new();
 191         qio_channel_test_run_threads(test, true, src, dst);
 192         qio_channel_test_validate(test);
 193
 194         test_io_channel_socket_path_exists(listen_addr, true);
 195
 196         /* unref without close, to ensure finalize() cleans up */
 197
 198         object_unref(OBJECT(src));
 199         object_unref(OBJECT(dst));
 200         test_io_channel_socket_path_exists(listen_addr, true);
 201
 202         object_unref(OBJECT(srv));
 203         test_io_channel_socket_path_exists(listen_addr, false);
 204
 205         test_io_channel_setup_async(listen_addr, connect_addr,
 206                                     &srv, &src, &dst);
 207
 208         g_assert(!passFD ||
 209                  qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_FD_PASS));
 210         g_assert(!passFD ||
 211                  qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_FD_PASS));
 212         g_assert(qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_SHUTDOWN));
 213         g_assert(qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_SHUTDOWN));
 214
 215         test = qio_channel_test_new();
 216         qio_channel_test_run_threads(test, false, src, dst);
 217         qio_channel_test_validate(test);
 218
 219         /* close before unref, to ensure finalize copes with already closed */
 220
 221         qio_channel_close(src, &error_abort);
 222         qio_channel_close(dst, &error_abort);
 223         test_io_channel_socket_path_exists(listen_addr, true);
 224
 225         object_unref(OBJECT(src));
 226         object_unref(OBJECT(dst));
 227         test_io_channel_socket_path_exists(listen_addr, true);
 228
 229         qio_channel_close(srv, &error_abort);
 230         test_io_channel_socket_path_exists(listen_addr, false);
 231
 232         object_unref(OBJECT(srv));
 233         test_io_channel_socket_path_exists(listen_addr, false);
 234     } else {
 235         test_io_channel_setup_sync(listen_addr, connect_addr,
 236                                    &srv, &src, &dst);
 237
 238         g_assert(!passFD ||
 239                  qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_FD_PASS));
 240         g_assert(!passFD ||
 241                  qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_FD_PASS));
 242         g_assert(qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_SHUTDOWN));
 243         g_assert(qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_SHUTDOWN));
 244
 245         test_io_channel_socket_path_exists(listen_addr, true);
 246
 247         test = qio_channel_test_new();
 248         qio_channel_test_run_threads(test, true, src, dst);
 249         qio_channel_test_validate(test);
 250
 251         test_io_channel_socket_path_exists(listen_addr, true);
 252
 253         /* unref without close, to ensure finalize() cleans up */
 254
 255         object_unref(OBJECT(src));
 256         object_unref(OBJECT(dst));
 257         test_io_channel_socket_path_exists(listen_addr, true);
 258
 259         object_unref(OBJECT(srv));
 260         test_io_channel_socket_path_exists(listen_addr, false);
 261
 262         test_io_channel_setup_sync(listen_addr, connect_addr,
 263                                    &srv, &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         g_assert(qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_SHUTDOWN));
 270         g_assert(qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_SHUTDOWN));
 271
 272         test = qio_channel_test_new();
 273         qio_channel_test_run_threads(test, false, src, dst);
 274         qio_channel_test_validate(test);
 275
 276         test_io_channel_socket_path_exists(listen_addr, true);
 277
 278         /* close before unref, to ensure finalize copes with already closed */
 279
 280         qio_channel_close(src, &error_abort);
 281         qio_channel_close(dst, &error_abort);
 282         test_io_channel_socket_path_exists(listen_addr, true);
 283
 284         object_unref(OBJECT(src));
 285         object_unref(OBJECT(dst));
 286         test_io_channel_socket_path_exists(listen_addr, true);
 287
 288         qio_channel_close(srv, &error_abort);
 289         test_io_channel_socket_path_exists(listen_addr, false);
 290
 291         object_unref(OBJECT(srv));
 292         test_io_channel_socket_path_exists(listen_addr, false);
 293     }
 294 }
 295
 296
 297 static void test_io_channel_ipv4(bool async)
 298 {
 299     SocketAddress *listen_addr = g_new0(SocketAddress, 1);
 300     SocketAddress *connect_addr = g_new0(SocketAddress, 1);
 301
 302     listen_addr->type = SOCKET_ADDRESS_TYPE_INET;
 303     listen_addr->u.inet = (InetSocketAddress) {
 304         .host = g_strdup("127.0.0.1"),
 305         .port = NULL, /* Auto-select */
 306     };
 307
 308     connect_addr->type = SOCKET_ADDRESS_TYPE_INET;
 309     connect_addr->u.inet = (InetSocketAddress) {
 310         .host = g_strdup("127.0.0.1"),
 311         .port = NULL, /* Filled in later */
 312     };
 313
 314     test_io_channel(async, listen_addr, connect_addr, false);
 315
 316     qapi_free_SocketAddress(listen_addr);
 317     qapi_free_SocketAddress(connect_addr);
 318 }
 319
 320
 321 static void test_io_channel_ipv4_sync(void)
 322 {
 323     return test_io_channel_ipv4(false);
 324 }
 325
 326
 327 static void test_io_channel_ipv4_async(void)
 328 {
 329     return test_io_channel_ipv4(true);
 330 }
 331
 332
 333 static void test_io_channel_ipv6(bool async)
 334 {
 335     SocketAddress *listen_addr = g_new0(SocketAddress, 1);
 336     SocketAddress *connect_addr = g_new0(SocketAddress, 1);
 337
 338     listen_addr->type = SOCKET_ADDRESS_TYPE_INET;
 339     listen_addr->u.inet = (InetSocketAddress) {
 340         .host = g_strdup("::1"),
 341         .port = NULL, /* Auto-select */
 342     };
 343
 344     connect_addr->type = SOCKET_ADDRESS_TYPE_INET;
 345     connect_addr->u.inet = (InetSocketAddress) {
 346         .host = g_strdup("::1"),
 347         .port = NULL, /* Filled in later */
 348     };
 349
 350     test_io_channel(async, listen_addr, connect_addr, false);
 351
 352     qapi_free_SocketAddress(listen_addr);
 353     qapi_free_SocketAddress(connect_addr);
 354 }
 355
 356
 357 static void test_io_channel_ipv6_sync(void)
 358 {
 359     return test_io_channel_ipv6(false);
 360 }
 361
 362
 363 static void test_io_channel_ipv6_async(void)
 364 {
 365     return test_io_channel_ipv6(true);
 366 }
 367
 368
 369 #ifndef _WIN32
 370 static void test_io_channel_unix(bool async)
 371 {
 372     SocketAddress *listen_addr = g_new0(SocketAddress, 1);
 373     SocketAddress *connect_addr = g_new0(SocketAddress, 1);
 374
 375 #define TEST_SOCKET "test-io-channel-socket.sock"
 376     listen_addr->type = SOCKET_ADDRESS_TYPE_UNIX;
 377     listen_addr->u.q_unix.path = g_strdup(TEST_SOCKET);
 378
 379     connect_addr->type = SOCKET_ADDRESS_TYPE_UNIX;
 380     connect_addr->u.q_unix.path = g_strdup(TEST_SOCKET);
 381
 382     test_io_channel(async, listen_addr, connect_addr, true);
 383
 384     qapi_free_SocketAddress(listen_addr);
 385     qapi_free_SocketAddress(connect_addr);
 386 }
 387
 388
 389 static void test_io_channel_unix_sync(void)
 390 {
 391     return test_io_channel_unix(false);
 392 }
 393
 394
 395 static void test_io_channel_unix_async(void)
 396 {
 397     return test_io_channel_unix(true);
 398 }
 399
 400 static void test_io_channel_unix_fd_pass(void)
 401 {
 402     SocketAddress *listen_addr = g_new0(SocketAddress, 1);
 403     SocketAddress *connect_addr = g_new0(SocketAddress, 1);
 404     QIOChannel *src, *dst, *srv;
 405     int testfd;
 406     int fdsend[3];
 407     int *fdrecv = NULL;
 408     size_t nfdrecv = 0;
 409     size_t i;
 410     char bufsend[12], bufrecv[12];
 411     struct iovec iosend[1], iorecv[1];
 412
 413 #define TEST_SOCKET "test-io-channel-socket.sock"
 414 #define TEST_FILE "test-io-channel-socket.txt"
 415
 416     testfd = open(TEST_FILE, O_RDWR|O_TRUNC|O_CREAT, 0700);
 417     g_assert(testfd != -1);
 418     fdsend[0] = testfd;
 419     fdsend[1] = testfd;
 420     fdsend[2] = testfd;
 421
 422     listen_addr->type = SOCKET_ADDRESS_TYPE_UNIX;
 423     listen_addr->u.q_unix.path = g_strdup(TEST_SOCKET);
 424
 425     connect_addr->type = SOCKET_ADDRESS_TYPE_UNIX;
 426     connect_addr->u.q_unix.path = g_strdup(TEST_SOCKET);
 427
 428     test_io_channel_setup_sync(listen_addr, connect_addr, &srv, &src, &dst);
 429
 430     memcpy(bufsend, "Hello World", G_N_ELEMENTS(bufsend));
 431
 432     iosend[0].iov_base = bufsend;
 433     iosend[0].iov_len = G_N_ELEMENTS(bufsend);
 434
 435     iorecv[0].iov_base = bufrecv;
 436     iorecv[0].iov_len = G_N_ELEMENTS(bufrecv);
 437
 438     g_assert(qio_channel_has_feature(src, QIO_CHANNEL_FEATURE_FD_PASS));
 439     g_assert(qio_channel_has_feature(dst, QIO_CHANNEL_FEATURE_FD_PASS));
 440
 441     qio_channel_writev_full(src,
 442                             iosend,
 443                             G_N_ELEMENTS(iosend),
 444                             fdsend,
 445                             G_N_ELEMENTS(fdsend),
 446                             &error_abort);
 447
 448     qio_channel_readv_full(dst,
 449                            iorecv,
 450                            G_N_ELEMENTS(iorecv),
 451                            &fdrecv,
 452                            &nfdrecv,
 453                            &error_abort);
 454
 455     g_assert(nfdrecv == G_N_ELEMENTS(fdsend));
 456     /* Each recvd FD should be different from sent FD */
 457     for (i = 0; i < nfdrecv; i++) {
 458         g_assert_cmpint(fdrecv[i], !=, testfd);
 459     }
 460     /* Each recvd FD should be different from each other */
 461     g_assert_cmpint(fdrecv[0], !=, fdrecv[1]);
 462     g_assert_cmpint(fdrecv[0], !=, fdrecv[2]);
 463     g_assert_cmpint(fdrecv[1], !=, fdrecv[2]);
 464
 465     /* Check the I/O buf we sent at the same time matches */
 466     g_assert(memcmp(bufsend, bufrecv, G_N_ELEMENTS(bufsend)) == 0);
 467
 468     /* Write some data into the FD we received */
 469     g_assert(write(fdrecv[0], bufsend, G_N_ELEMENTS(bufsend)) ==
 470              G_N_ELEMENTS(bufsend));
 471
 472     /* Read data from the original FD and make sure it matches */
 473     memset(bufrecv, 0, G_N_ELEMENTS(bufrecv));
 474     g_assert(lseek(testfd, 0, SEEK_SET) == 0);
 475     g_assert(read(testfd, bufrecv, G_N_ELEMENTS(bufrecv)) ==
 476              G_N_ELEMENTS(bufrecv));
 477     g_assert(memcmp(bufsend, bufrecv, G_N_ELEMENTS(bufsend)) == 0);
 478
 479     object_unref(OBJECT(src));
 480     object_unref(OBJECT(dst));
 481     object_unref(OBJECT(srv));
 482     qapi_free_SocketAddress(listen_addr);
 483     qapi_free_SocketAddress(connect_addr);
 484     unlink(TEST_SOCKET);
 485     unlink(TEST_FILE);
 486     close(testfd);
 487     for (i = 0; i < nfdrecv; i++) {
 488         close(fdrecv[i]);
 489     }
 490     g_free(fdrecv);
 491 }
 492
 493 static void test_io_channel_unix_listen_cleanup(void)
 494 {
 495     QIOChannelSocket *ioc;
 496     struct sockaddr_un un;
 497     int sock;
 498
 499 #define TEST_SOCKET "test-io-channel-socket.sock"
 500
 501     ioc = qio_channel_socket_new();
 502
 503     /* Manually bind ioc without calling the qio api to avoid setting
 504      * the LISTEN feature */
 505     sock = qemu_socket(PF_UNIX, SOCK_STREAM, 0);
 506     memset(&un, 0, sizeof(un));
 507     un.sun_family = AF_UNIX;
 508     snprintf(un.sun_path, sizeof(un.sun_path), "%s", TEST_SOCKET);
 509     unlink(TEST_SOCKET);
 510     bind(sock, (struct sockaddr *)&un, sizeof(un));
 511     ioc->fd = sock;
 512     ioc->localAddrLen = sizeof(ioc->localAddr);
 513     getsockname(sock, (struct sockaddr *)&ioc->localAddr,
 514                 &ioc->localAddrLen);
 515
 516     g_assert(g_file_test(TEST_SOCKET, G_FILE_TEST_EXISTS));
 517     object_unref(OBJECT(ioc));
 518     g_assert(g_file_test(TEST_SOCKET, G_FILE_TEST_EXISTS));
 519
 520     unlink(TEST_SOCKET);
 521 }
 522
 523 #endif /* _WIN32 */
 524
 525
 526 static void test_io_channel_ipv4_fd(void)
 527 {
 528     QIOChannel *ioc;
 529     int fd = -1;
 530     struct sockaddr_in sa = {
 531         .sin_family = AF_INET,
 532         .sin_addr = {
 533             .s_addr =  htonl(INADDR_LOOPBACK),
 534         }
 535         /* Leave port unset for auto-assign */
 536     };
 537     socklen_t salen = sizeof(sa);
 538
 539     fd = socket(AF_INET, SOCK_STREAM, 0);
 540     g_assert_cmpint(fd, >, -1);
 541
 542     g_assert_cmpint(bind(fd, (struct sockaddr *)&sa, salen), ==, 0);
 543
 544     ioc = qio_channel_new_fd(fd, &error_abort);
 545
 546     g_assert_cmpstr(object_get_typename(OBJECT(ioc)),
 547                     ==,
 548                     TYPE_QIO_CHANNEL_SOCKET);
 549
 550     object_unref(OBJECT(ioc));
 551 }
 552
 553
 554 int main(int argc, char **argv)
 555 {
 556     bool has_ipv4, has_ipv6;
 557
 558     module_call_init(MODULE_INIT_QOM);
 559     socket_init();
 560
 561     g_test_init(&argc, &argv, NULL);
 562
 563     /* We're creating actual IPv4/6 sockets, so we should
 564      * check if the host running tests actually supports
 565      * each protocol to avoid breaking tests on machines
 566      * with either IPv4 or IPv6 disabled.
 567      */
 568     if (socket_check_protocol_support(&has_ipv4, &has_ipv6) < 0) {
 569         g_printerr("socket_check_protocol_support() failed\n");
 570         goto end;
 571     }
 572
 573     if (has_ipv4) {
 574         g_test_add_func("/io/channel/socket/ipv4-sync",
 575                         test_io_channel_ipv4_sync);
 576         g_test_add_func("/io/channel/socket/ipv4-async",
 577                         test_io_channel_ipv4_async);
 578         g_test_add_func("/io/channel/socket/ipv4-fd",
 579                         test_io_channel_ipv4_fd);
 580     }
 581     if (has_ipv6) {
 582         g_test_add_func("/io/channel/socket/ipv6-sync",
 583                         test_io_channel_ipv6_sync);
 584         g_test_add_func("/io/channel/socket/ipv6-async",
 585                         test_io_channel_ipv6_async);
 586     }
 587
 588 #ifndef _WIN32
 589     g_test_add_func("/io/channel/socket/unix-sync",
 590                     test_io_channel_unix_sync);
 591     g_test_add_func("/io/channel/socket/unix-async",
 592                     test_io_channel_unix_async);
 593     g_test_add_func("/io/channel/socket/unix-fd-pass",
 594                     test_io_channel_unix_fd_pass);
 595     g_test_add_func("/io/channel/socket/unix-listen-cleanup",
 596                     test_io_channel_unix_listen_cleanup);
 597 #endif /* _WIN32 */
 598
 599 end:
 600     return g_test_run();
 601 }