tests/test-char.c

   1 #include "qemu/osdep.h"
   2 #include <glib/gstdio.h>
   3
   4 #include "qemu/config-file.h"
   5 #include "qemu/module.h"
   6 #include "qemu/option.h"
   7 #include "qemu/sockets.h"
   8 #include "chardev/char-fe.h"
   9 #include "sysemu/sysemu.h"
  10 #include "qapi/error.h"
  11 #include "qapi/qapi-commands-char.h"
  12 #include "qapi/qmp/qdict.h"
  13 #include "qom/qom-qobject.h"
  14 #include "io/channel-socket.h"
  15 #include "qapi/qobject-input-visitor.h"
  16 #include "qapi/qapi-visit-sockets.h"
  17 #include "socket-helpers.h"
  18
  19 static bool quit;
  20
  21 typedef struct FeHandler {
  22     int read_count;
  23     bool is_open;
  24     int openclose_count;
  25     bool openclose_mismatch;
  26     int last_event;
  27     char read_buf[128];
  28 } FeHandler;
  29
  30 static void main_loop(void)
  31 {
  32     quit = false;
  33     do {
  34         main_loop_wait(false);
  35     } while (!quit);
  36 }
  37
  38 static int fe_can_read(void *opaque)
  39 {
  40     FeHandler *h = opaque;
  41
  42     return sizeof(h->read_buf) - h->read_count;
  43 }
  44
  45 static void fe_read(void *opaque, const uint8_t *buf, int size)
  46 {
  47     FeHandler *h = opaque;
  48
  49     g_assert_cmpint(size, <=, fe_can_read(opaque));
  50
  51     memcpy(h->read_buf + h->read_count, buf, size);
  52     h->read_count += size;
  53     quit = true;
  54 }
  55
  56 static void fe_event(void *opaque, QEMUChrEvent event)
  57 {
  58     FeHandler *h = opaque;
  59     bool new_open_state;
  60
  61     h->last_event = event;
  62     switch (event) {
  63     case CHR_EVENT_BREAK:
  64         break;
  65     case CHR_EVENT_OPENED:
  66     case CHR_EVENT_CLOSED:
  67         h->openclose_count++;
  68         new_open_state = (event == CHR_EVENT_OPENED);
  69         if (h->is_open == new_open_state) {
  70             h->openclose_mismatch = true;
  71         }
  72         h->is_open = new_open_state;
  73         /* fallthrough */
  74     default:
  75         quit = true;
  76         break;
  77     }
  78 }
  79
  80 #ifdef _WIN32
  81 static void char_console_test_subprocess(void)
  82 {
  83     QemuOpts *opts;
  84     Chardev *chr;
  85
  86     opts = qemu_opts_create(qemu_find_opts("chardev"), "console-label",
  87                             1, &error_abort);
  88     qemu_opt_set(opts, "backend", "console", &error_abort);
  89
  90     chr = qemu_chr_new_from_opts(opts, NULL, NULL);
  91     g_assert_nonnull(chr);
  92
  93     qemu_chr_write_all(chr, (const uint8_t *)"CONSOLE", 7);
  94
  95     qemu_opts_del(opts);
  96     object_unparent(OBJECT(chr));
  97 }
  98
  99 static void char_console_test(void)
 100 {
 101     g_test_trap_subprocess("/char/console/subprocess", 0, 0);
 102     g_test_trap_assert_passed();
 103     g_test_trap_assert_stdout("CONSOLE");
 104 }
 105 #endif
 106 static void char_stdio_test_subprocess(void)
 107 {
 108     Chardev *chr;
 109     CharBackend be;
 110     int ret;
 111
 112     chr = qemu_chr_new("label", "stdio", NULL);
 113     g_assert_nonnull(chr);
 114
 115     qemu_chr_fe_init(&be, chr, &error_abort);
 116     qemu_chr_fe_set_open(&be, true);
 117     ret = qemu_chr_fe_write(&be, (void *)"buf", 4);
 118     g_assert_cmpint(ret, ==, 4);
 119
 120     qemu_chr_fe_deinit(&be, true);
 121 }
 122
 123 static void char_stdio_test(void)
 124 {
 125     g_test_trap_subprocess("/char/stdio/subprocess", 0, 0);
 126     g_test_trap_assert_passed();
 127     g_test_trap_assert_stdout("buf");
 128 }
 129
 130 static void char_ringbuf_test(void)
 131 {
 132     QemuOpts *opts;
 133     Chardev *chr;
 134     CharBackend be;
 135     char *data;
 136     int ret;
 137
 138     opts = qemu_opts_create(qemu_find_opts("chardev"), "ringbuf-label",
 139                             1, &error_abort);
 140     qemu_opt_set(opts, "backend", "ringbuf", &error_abort);
 141
 142     qemu_opt_set(opts, "size", "5", &error_abort);
 143     chr = qemu_chr_new_from_opts(opts, NULL, NULL);
 144     g_assert_null(chr);
 145     qemu_opts_del(opts);
 146
 147     opts = qemu_opts_create(qemu_find_opts("chardev"), "ringbuf-label",
 148                             1, &error_abort);
 149     qemu_opt_set(opts, "backend", "ringbuf", &error_abort);
 150     qemu_opt_set(opts, "size", "2", &error_abort);
 151     chr = qemu_chr_new_from_opts(opts, NULL, &error_abort);
 152     g_assert_nonnull(chr);
 153     qemu_opts_del(opts);
 154
 155     qemu_chr_fe_init(&be, chr, &error_abort);
 156     ret = qemu_chr_fe_write(&be, (void *)"buff", 4);
 157     g_assert_cmpint(ret, ==, 4);
 158
 159     data = qmp_ringbuf_read("ringbuf-label", 4, false, 0, &error_abort);
 160     g_assert_cmpstr(data, ==, "ff");
 161     g_free(data);
 162
 163     data = qmp_ringbuf_read("ringbuf-label", 4, false, 0, &error_abort);
 164     g_assert_cmpstr(data, ==, "");
 165     g_free(data);
 166
 167     qemu_chr_fe_deinit(&be, true);
 168
 169     /* check alias */
 170     opts = qemu_opts_create(qemu_find_opts("chardev"), "memory-label",
 171                             1, &error_abort);
 172     qemu_opt_set(opts, "backend", "memory", &error_abort);
 173     qemu_opt_set(opts, "size", "2", &error_abort);
 174     chr = qemu_chr_new_from_opts(opts, NULL, NULL);
 175     g_assert_nonnull(chr);
 176     object_unparent(OBJECT(chr));
 177     qemu_opts_del(opts);
 178 }
 179
 180 static void char_mux_test(void)
 181 {
 182     QemuOpts *opts;
 183     Chardev *chr, *base;
 184     char *data;
 185     FeHandler h1 = { 0, false, 0, false, }, h2 = { 0, false, 0, false, };
 186     CharBackend chr_be1, chr_be2;
 187
 188     opts = qemu_opts_create(qemu_find_opts("chardev"), "mux-label",
 189                             1, &error_abort);
 190     qemu_opt_set(opts, "backend", "ringbuf", &error_abort);
 191     qemu_opt_set(opts, "size", "128", &error_abort);
 192     qemu_opt_set(opts, "mux", "on", &error_abort);
 193     chr = qemu_chr_new_from_opts(opts, NULL, &error_abort);
 194     g_assert_nonnull(chr);
 195     qemu_opts_del(opts);
 196
 197     qemu_chr_fe_init(&chr_be1, chr, &error_abort);
 198     qemu_chr_fe_set_handlers(&chr_be1,
 199                              fe_can_read,
 200                              fe_read,
 201                              fe_event,
 202                              NULL,
 203                              &h1,
 204                              NULL, true);
 205
 206     qemu_chr_fe_init(&chr_be2, chr, &error_abort);
 207     qemu_chr_fe_set_handlers(&chr_be2,
 208                              fe_can_read,
 209                              fe_read,
 210                              fe_event,
 211                              NULL,
 212                              &h2,
 213                              NULL, true);
 214     qemu_chr_fe_take_focus(&chr_be2);
 215
 216     base = qemu_chr_find("mux-label-base");
 217     g_assert_cmpint(qemu_chr_be_can_write(base), !=, 0);
 218
 219     qemu_chr_be_write(base, (void *)"hello", 6);
 220     g_assert_cmpint(h1.read_count, ==, 0);
 221     g_assert_cmpint(h2.read_count, ==, 6);
 222     g_assert_cmpstr(h2.read_buf, ==, "hello");
 223     h2.read_count = 0;
 224
 225     g_assert_cmpint(h1.last_event, !=, 42); /* should be MUX_OUT or OPENED */
 226     g_assert_cmpint(h2.last_event, !=, 42); /* should be MUX_IN or OPENED */
 227     /* sending event on the base broadcast to all fe, historical reasons? */
 228     qemu_chr_be_event(base, 42);
 229     g_assert_cmpint(h1.last_event, ==, 42);
 230     g_assert_cmpint(h2.last_event, ==, 42);
 231     qemu_chr_be_event(chr, -1);
 232     g_assert_cmpint(h1.last_event, ==, 42);
 233     g_assert_cmpint(h2.last_event, ==, -1);
 234
 235     /* switch focus */
 236     qemu_chr_be_write(base, (void *)"\1b", 2);
 237     g_assert_cmpint(h1.last_event, ==, 42);
 238     g_assert_cmpint(h2.last_event, ==, CHR_EVENT_BREAK);
 239
 240     qemu_chr_be_write(base, (void *)"\1c", 2);
 241     g_assert_cmpint(h1.last_event, ==, CHR_EVENT_MUX_IN);
 242     g_assert_cmpint(h2.last_event, ==, CHR_EVENT_MUX_OUT);
 243     qemu_chr_be_event(chr, -1);
 244     g_assert_cmpint(h1.last_event, ==, -1);
 245     g_assert_cmpint(h2.last_event, ==, CHR_EVENT_MUX_OUT);
 246
 247     qemu_chr_be_write(base, (void *)"hello", 6);
 248     g_assert_cmpint(h2.read_count, ==, 0);
 249     g_assert_cmpint(h1.read_count, ==, 6);
 250     g_assert_cmpstr(h1.read_buf, ==, "hello");
 251     h1.read_count = 0;
 252
 253     qemu_chr_be_write(base, (void *)"\1b", 2);
 254     g_assert_cmpint(h1.last_event, ==, CHR_EVENT_BREAK);
 255     g_assert_cmpint(h2.last_event, ==, CHR_EVENT_MUX_OUT);
 256
 257     /* open/close state and corresponding events */
 258     g_assert_true(qemu_chr_fe_backend_open(&chr_be1));
 259     g_assert_true(qemu_chr_fe_backend_open(&chr_be2));
 260     g_assert_true(h1.is_open);
 261     g_assert_false(h1.openclose_mismatch);
 262     g_assert_true(h2.is_open);
 263     g_assert_false(h2.openclose_mismatch);
 264
 265     h1.openclose_count = h2.openclose_count = 0;
 266
 267     qemu_chr_fe_set_handlers(&chr_be1, NULL, NULL, NULL, NULL,
 268                              NULL, NULL, false);
 269     qemu_chr_fe_set_handlers(&chr_be2, NULL, NULL, NULL, NULL,
 270                              NULL, NULL, false);
 271     g_assert_cmpint(h1.openclose_count, ==, 0);
 272     g_assert_cmpint(h2.openclose_count, ==, 0);
 273
 274     h1.is_open = h2.is_open = false;
 275     qemu_chr_fe_set_handlers(&chr_be1,
 276                              NULL,
 277                              NULL,
 278                              fe_event,
 279                              NULL,
 280                              &h1,
 281                              NULL, false);
 282     qemu_chr_fe_set_handlers(&chr_be2,
 283                              NULL,
 284                              NULL,
 285                              fe_event,
 286                              NULL,
 287                              &h2,
 288                              NULL, false);
 289     g_assert_cmpint(h1.openclose_count, ==, 1);
 290     g_assert_false(h1.openclose_mismatch);
 291     g_assert_cmpint(h2.openclose_count, ==, 1);
 292     g_assert_false(h2.openclose_mismatch);
 293
 294     qemu_chr_be_event(base, CHR_EVENT_CLOSED);
 295     qemu_chr_be_event(base, CHR_EVENT_OPENED);
 296     g_assert_cmpint(h1.openclose_count, ==, 3);
 297     g_assert_false(h1.openclose_mismatch);
 298     g_assert_cmpint(h2.openclose_count, ==, 3);
 299     g_assert_false(h2.openclose_mismatch);
 300
 301     qemu_chr_fe_set_handlers(&chr_be2,
 302                              fe_can_read,
 303                              fe_read,
 304                              fe_event,
 305                              NULL,
 306                              &h2,
 307                              NULL, false);
 308     qemu_chr_fe_set_handlers(&chr_be1,
 309                              fe_can_read,
 310                              fe_read,
 311                              fe_event,
 312                              NULL,
 313                              &h1,
 314                              NULL, false);
 315
 316     /* remove first handler */
 317     qemu_chr_fe_set_handlers(&chr_be1, NULL, NULL, NULL, NULL,
 318                              NULL, NULL, true);
 319     qemu_chr_be_write(base, (void *)"hello", 6);
 320     g_assert_cmpint(h1.read_count, ==, 0);
 321     g_assert_cmpint(h2.read_count, ==, 0);
 322
 323     qemu_chr_be_write(base, (void *)"\1c", 2);
 324     qemu_chr_be_write(base, (void *)"hello", 6);
 325     g_assert_cmpint(h1.read_count, ==, 0);
 326     g_assert_cmpint(h2.read_count, ==, 6);
 327     g_assert_cmpstr(h2.read_buf, ==, "hello");
 328     h2.read_count = 0;
 329
 330     /* print help */
 331     qemu_chr_be_write(base, (void *)"\1?", 2);
 332     data = qmp_ringbuf_read("mux-label-base", 128, false, 0, &error_abort);
 333     g_assert_cmpint(strlen(data), !=, 0);
 334     g_free(data);
 335
 336     qemu_chr_fe_deinit(&chr_be1, false);
 337     qemu_chr_fe_deinit(&chr_be2, true);
 338 }
 339
 340
 341 static void websock_server_read(void *opaque, const uint8_t *buf, int size)
 342 {
 343     g_assert_cmpint(size, ==, 5);
 344     g_assert(memcmp(buf, "world", size) == 0);
 345     quit = true;
 346 }
 347
 348
 349 static int websock_server_can_read(void *opaque)
 350 {
 351     return 10;
 352 }
 353
 354
 355 static bool websock_check_http_headers(char *buf, int size)
 356 {
 357     int i;
 358     const char *ans[] = { "HTTP/1.1 101 Switching Protocols\r\n",
 359                           "Server: QEMU VNC\r\n",
 360                           "Upgrade: websocket\r\n",
 361                           "Connection: Upgrade\r\n",
 362                           "Sec-WebSocket-Accept:",
 363                           "Sec-WebSocket-Protocol: binary\r\n" };
 364
 365     for (i = 0; i < 6; i++) {
 366         if (g_strstr_len(buf, size, ans[i]) == NULL) {
 367             return false;
 368         }
 369     }
 370
 371     return true;
 372 }
 373
 374
 375 static void websock_client_read(void *opaque, const uint8_t *buf, int size)
 376 {
 377     const uint8_t ping[] = { 0x89, 0x85,                  /* Ping header */
 378                              0x07, 0x77, 0x9e, 0xf9,      /* Masking key */
 379                              0x6f, 0x12, 0xf2, 0x95, 0x68 /* "hello" */ };
 380
 381     const uint8_t binary[] = { 0x82, 0x85,                  /* Binary header */
 382                                0x74, 0x90, 0xb9, 0xdf,      /* Masking key */
 383                                0x03, 0xff, 0xcb, 0xb3, 0x10 /* "world" */ };
 384     Chardev *chr_client = opaque;
 385
 386     if (websock_check_http_headers((char *) buf, size)) {
 387         qemu_chr_fe_write(chr_client->be, ping, sizeof(ping));
 388     } else if (buf[0] == 0x8a && buf[1] == 0x05) {
 389         g_assert(strncmp((char *) buf + 2, "hello", 5) == 0);
 390         qemu_chr_fe_write(chr_client->be, binary, sizeof(binary));
 391     } else {
 392         g_assert(buf[0] == 0x88 && buf[1] == 0x16);
 393         g_assert(strncmp((char *) buf + 4, "peer requested close", 10) == 0);
 394         quit = true;
 395     }
 396 }
 397
 398
 399 static int websock_client_can_read(void *opaque)
 400 {
 401     return 4096;
 402 }
 403
 404
 405 static void char_websock_test(void)
 406 {
 407     QObject *addr;
 408     QDict *qdict;
 409     const char *port;
 410     char *tmp;
 411     char *handshake_port;
 412     CharBackend be;
 413     CharBackend client_be;
 414     Chardev *chr_client;
 415     Chardev *chr = qemu_chr_new("server",
 416                                 "websocket:127.0.0.1:0,server=on,wait=off", NULL);
 417     const char handshake[] = "GET / HTTP/1.1\r\n"
 418                              "Upgrade: websocket\r\n"
 419                              "Connection: Upgrade\r\n"
 420                              "Host: localhost:%s\r\n"
 421                              "Origin: http://localhost:%s\r\n"
 422                              "Sec-WebSocket-Key: o9JHNiS3/0/0zYE1wa3yIw==\r\n"
 423                              "Sec-WebSocket-Version: 13\r\n"
 424                              "Sec-WebSocket-Protocol: binary\r\n\r\n";
 425     const uint8_t close[] = { 0x88, 0x82,             /* Close header */
 426                               0xef, 0xaa, 0xc5, 0x97, /* Masking key */
 427                               0xec, 0x42              /* Status code */ };
 428
 429     addr = object_property_get_qobject(OBJECT(chr), "addr", &error_abort);
 430     qdict = qobject_to(QDict, addr);
 431     port = qdict_get_str(qdict, "port");
 432     tmp = g_strdup_printf("tcp:127.0.0.1:%s", port);
 433     handshake_port = g_strdup_printf(handshake, port, port);
 434     qobject_unref(qdict);
 435
 436     qemu_chr_fe_init(&be, chr, &error_abort);
 437     qemu_chr_fe_set_handlers(&be, websock_server_can_read, websock_server_read,
 438                              NULL, NULL, chr, NULL, true);
 439
 440     chr_client = qemu_chr_new("client", tmp, NULL);
 441     qemu_chr_fe_init(&client_be, chr_client, &error_abort);
 442     qemu_chr_fe_set_handlers(&client_be, websock_client_can_read,
 443                              websock_client_read,
 444                              NULL, NULL, chr_client, NULL, true);
 445     g_free(tmp);
 446
 447     qemu_chr_write_all(chr_client,
 448                        (uint8_t *) handshake_port,
 449                        strlen(handshake_port));
 450     g_free(handshake_port);
 451     main_loop();
 452
 453     g_assert(object_property_get_bool(OBJECT(chr), "connected", &error_abort));
 454     g_assert(object_property_get_bool(OBJECT(chr_client),
 455                                       "connected", &error_abort));
 456
 457     qemu_chr_write_all(chr_client, close, sizeof(close));
 458     main_loop();
 459
 460     object_unparent(OBJECT(chr_client));
 461     object_unparent(OBJECT(chr));
 462 }
 463
 464
 465 #ifndef _WIN32
 466 static void char_pipe_test(void)
 467 {
 468     gchar *tmp_path = g_dir_make_tmp("qemu-test-char.XXXXXX", NULL);
 469     gchar *tmp, *in, *out, *pipe = g_build_filename(tmp_path, "pipe", NULL);
 470     Chardev *chr;
 471     CharBackend be;
 472     int ret, fd;
 473     char buf[10];
 474     FeHandler fe = { 0, };
 475
 476     in = g_strdup_printf("%s.in", pipe);
 477     if (mkfifo(in, 0600) < 0) {
 478         abort();
 479     }
 480     out = g_strdup_printf("%s.out", pipe);
 481     if (mkfifo(out, 0600) < 0) {
 482         abort();
 483     }
 484
 485     tmp = g_strdup_printf("pipe:%s", pipe);
 486     chr = qemu_chr_new("pipe", tmp, NULL);
 487     g_assert_nonnull(chr);
 488     g_free(tmp);
 489
 490     qemu_chr_fe_init(&be, chr, &error_abort);
 491
 492     ret = qemu_chr_fe_write(&be, (void *)"pipe-out", 9);
 493     g_assert_cmpint(ret, ==, 9);
 494
 495     fd = open(out, O_RDWR);
 496     ret = read(fd, buf, sizeof(buf));
 497     g_assert_cmpint(ret, ==, 9);
 498     g_assert_cmpstr(buf, ==, "pipe-out");
 499     close(fd);
 500
 501     fd = open(in, O_WRONLY);
 502     ret = write(fd, "pipe-in", 8);
 503     g_assert_cmpint(ret, ==, 8);
 504     close(fd);
 505
 506     qemu_chr_fe_set_handlers(&be,
 507                              fe_can_read,
 508                              fe_read,
 509                              fe_event,
 510                              NULL,
 511                              &fe,
 512                              NULL, true);
 513
 514     main_loop();
 515
 516     g_assert_cmpint(fe.read_count, ==, 8);
 517     g_assert_cmpstr(fe.read_buf, ==, "pipe-in");
 518
 519     qemu_chr_fe_deinit(&be, true);
 520
 521     g_assert(g_unlink(in) == 0);
 522     g_assert(g_unlink(out) == 0);
 523     g_assert(g_rmdir(tmp_path) == 0);
 524     g_free(in);
 525     g_free(out);
 526     g_free(tmp_path);
 527     g_free(pipe);
 528 }
 529 #endif
 530
 531 typedef struct SocketIdleData {
 532     GMainLoop *loop;
 533     Chardev *chr;
 534     bool conn_expected;
 535     CharBackend *be;
 536     CharBackend *client_be;
 537 } SocketIdleData;
 538
 539
 540 static void socket_read_hello(void *opaque, const uint8_t *buf, int size)
 541 {
 542     g_assert_cmpint(size, ==, 5);
 543     g_assert(strncmp((char *)buf, "hello", 5) == 0);
 544
 545     quit = true;
 546 }
 547
 548 static int socket_can_read_hello(void *opaque)
 549 {
 550     return 10;
 551 }
 552
 553 static int make_udp_socket(int *port)
 554 {
 555     struct sockaddr_in addr = { 0, };
 556     socklen_t alen = sizeof(addr);
 557     int ret, sock = qemu_socket(PF_INET, SOCK_DGRAM, 0);
 558
 559     g_assert_cmpint(sock, >, 0);
 560     addr.sin_family = AF_INET ;
 561     addr.sin_addr.s_addr = htonl(INADDR_ANY);
 562     addr.sin_port = 0;
 563     ret = bind(sock, (struct sockaddr *)&addr, sizeof(addr));
 564     g_assert_cmpint(ret, ==, 0);
 565     ret = getsockname(sock, (struct sockaddr *)&addr, &alen);
 566     g_assert_cmpint(ret, ==, 0);
 567
 568     *port = ntohs(addr.sin_port);
 569     return sock;
 570 }
 571
 572 static void char_udp_test_internal(Chardev *reuse_chr, int sock)
 573 {
 574     struct sockaddr_in other;
 575     SocketIdleData d = { 0, };
 576     Chardev *chr;
 577     CharBackend *be;
 578     socklen_t alen = sizeof(other);
 579     int ret;
 580     char buf[10];
 581     char *tmp = NULL;
 582
 583     if (reuse_chr) {
 584         chr = reuse_chr;
 585         be = chr->be;
 586     } else {
 587         int port;
 588         sock = make_udp_socket(&port);
 589         tmp = g_strdup_printf("udp:127.0.0.1:%d", port);
 590         chr = qemu_chr_new("client", tmp, NULL);
 591         g_assert_nonnull(chr);
 592
 593         be = g_alloca(sizeof(CharBackend));
 594         qemu_chr_fe_init(be, chr, &error_abort);
 595     }
 596
 597     d.chr = chr;
 598     qemu_chr_fe_set_handlers(be, socket_can_read_hello, socket_read_hello,
 599                              NULL, NULL, &d, NULL, true);
 600     ret = qemu_chr_write_all(chr, (uint8_t *)"hello", 5);
 601     g_assert_cmpint(ret, ==, 5);
 602
 603     ret = recvfrom(sock, buf, sizeof(buf), 0,
 604                    (struct sockaddr *)&other, &alen);
 605     g_assert_cmpint(ret, ==, 5);
 606     ret = sendto(sock, buf, 5, 0, (struct sockaddr *)&other, alen);
 607     g_assert_cmpint(ret, ==, 5);
 608
 609     main_loop();
 610
 611     if (!reuse_chr) {
 612         close(sock);
 613         qemu_chr_fe_deinit(be, true);
 614     }
 615     g_free(tmp);
 616 }
 617
 618 static void char_udp_test(void)
 619 {
 620     char_udp_test_internal(NULL, 0);
 621 }
 622
 623
 624 typedef struct {
 625     int event;
 626     bool got_pong;
 627     CharBackend *be;
 628 } CharSocketTestData;
 629
 630
 631 #define SOCKET_PING "Hello"
 632 #define SOCKET_PONG "World"
 633
 634 typedef void (*char_socket_cb)(void *opaque, QEMUChrEvent event);
 635
 636 static void
 637 char_socket_event(void *opaque, QEMUChrEvent event)
 638 {
 639     CharSocketTestData *data = opaque;
 640     data->event = event;
 641 }
 642
 643 static void
 644 char_socket_event_with_error(void *opaque, QEMUChrEvent event)
 645 {
 646     static bool first_error;
 647     CharSocketTestData *data = opaque;
 648     CharBackend *be = data->be;
 649     data->event = event;
 650     switch (event) {
 651     case CHR_EVENT_OPENED:
 652         if (!first_error) {
 653             first_error = true;
 654             qemu_chr_fe_disconnect(be);
 655         }
 656         return;
 657     case CHR_EVENT_CLOSED:
 658         return;
 659     default:
 660         return;
 661     }
 662 }
 663
 664
 665 static void
 666 char_socket_read(void *opaque, const uint8_t *buf, int size)
 667 {
 668     CharSocketTestData *data = opaque;
 669     g_assert_cmpint(size, ==, sizeof(SOCKET_PONG));
 670     g_assert(memcmp(buf, SOCKET_PONG, size) == 0);
 671     data->got_pong = true;
 672 }
 673
 674
 675 static int
 676 char_socket_can_read(void *opaque)
 677 {
 678     return sizeof(SOCKET_PONG);
 679 }
 680
 681
 682 static char *
 683 char_socket_addr_to_opt_str(SocketAddress *addr, bool fd_pass,
 684                             const char *reconnect, bool is_listen)
 685 {
 686     if (fd_pass) {
 687         QIOChannelSocket *ioc = qio_channel_socket_new();
 688         int fd;
 689         char *optstr;
 690         g_assert(!reconnect);
 691         if (is_listen) {
 692             qio_channel_socket_listen_sync(ioc, addr, 1, &error_abort);
 693         } else {
 694             qio_channel_socket_connect_sync(ioc, addr, &error_abort);
 695         }
 696         fd = ioc->fd;
 697         ioc->fd = -1;
 698         optstr = g_strdup_printf("socket,id=cdev0,fd=%d%s",
 699                                  fd, is_listen ? ",server=on,wait=off" : "");
 700         object_unref(OBJECT(ioc));
 701         return optstr;
 702     } else {
 703         switch (addr->type) {
 704         case SOCKET_ADDRESS_TYPE_INET:
 705             return g_strdup_printf("socket,id=cdev0,host=%s,port=%s%s%s",
 706                                    addr->u.inet.host,
 707                                    addr->u.inet.port,
 708                                    reconnect ? reconnect : "",
 709                                    is_listen ? ",server=on,wait=off" : "");
 710
 711         case SOCKET_ADDRESS_TYPE_UNIX:
 712             return g_strdup_printf("socket,id=cdev0,path=%s%s%s",
 713                                    addr->u.q_unix.path,
 714                                    reconnect ? reconnect : "",
 715                                    is_listen ? ",server=on,wait=off" : "");
 716
 717         default:
 718             g_assert_not_reached();
 719         }
 720     }
 721 }
 722
 723
 724 static int
 725 char_socket_ping_pong(QIOChannel *ioc, Error **errp)
 726 {
 727     char greeting[sizeof(SOCKET_PING)];
 728     const char *response = SOCKET_PONG;
 729
 730     int ret;
 731     ret = qio_channel_read_all(ioc, greeting, sizeof(greeting), errp);
 732     if (ret != 0) {
 733         object_unref(OBJECT(ioc));
 734         return -1;
 735     }
 736
 737     g_assert(memcmp(greeting, SOCKET_PING, sizeof(greeting)) == 0);
 738
 739     qio_channel_write_all(ioc, response, sizeof(SOCKET_PONG), errp);
 740     object_unref(OBJECT(ioc));
 741     return 0;
 742 }
 743
 744
 745 static gpointer
 746 char_socket_server_client_thread(gpointer data)
 747 {
 748     SocketAddress *addr = data;
 749     QIOChannelSocket *ioc = qio_channel_socket_new();
 750
 751     qio_channel_socket_connect_sync(ioc, addr, &error_abort);
 752
 753     char_socket_ping_pong(QIO_CHANNEL(ioc), &error_abort);
 754
 755     return NULL;
 756 }
 757
 758
 759 typedef struct {
 760     SocketAddress *addr;
 761     bool wait_connected;
 762     bool fd_pass;
 763 } CharSocketServerTestConfig;
 764
 765
 766 static void char_socket_server_test(gconstpointer opaque)
 767 {
 768     const CharSocketServerTestConfig *config = opaque;
 769     Chardev *chr;
 770     CharBackend be = {0};
 771     CharSocketTestData data = {0};
 772     QObject *qaddr;
 773     SocketAddress *addr;
 774     Visitor *v;
 775     QemuThread thread;
 776     int ret;
 777     bool reconnected = false;
 778     char *optstr;
 779     QemuOpts *opts;
 780
 781     g_setenv("QTEST_SILENT_ERRORS", "1", 1);
 782     /*
 783      * We rely on config->addr containing "nowait", otherwise
 784      * qemu_chr_new() will block until a client connects. We
 785      * can't spawn our client thread though, because until
 786      * qemu_chr_new() returns we don't know what TCP port was
 787      * allocated by the OS
 788      */
 789     optstr = char_socket_addr_to_opt_str(config->addr,
 790                                          config->fd_pass,
 791                                          NULL,
 792                                          true);
 793     opts = qemu_opts_parse_noisily(qemu_find_opts("chardev"),
 794                                    optstr, true);
 795     g_assert_nonnull(opts);
 796     chr = qemu_chr_new_from_opts(opts, NULL, &error_abort);
 797     qemu_opts_del(opts);
 798     g_assert_nonnull(chr);
 799     g_assert(!object_property_get_bool(OBJECT(chr), "connected", &error_abort));
 800
 801     qaddr = object_property_get_qobject(OBJECT(chr), "addr", &error_abort);
 802     g_assert_nonnull(qaddr);
 803
 804     v = qobject_input_visitor_new(qaddr);
 805     visit_type_SocketAddress(v, "addr", &addr, &error_abort);
 806     visit_free(v);
 807     qobject_unref(qaddr);
 808
 809     qemu_chr_fe_init(&be, chr, &error_abort);
 810
 811  reconnect:
 812     data.event = -1;
 813     data.be = &be;
 814     qemu_chr_fe_set_handlers(&be, NULL, NULL,
 815                              char_socket_event, NULL,
 816                              &data, NULL, true);
 817     g_assert(data.event == -1);
 818
 819     /*
 820      * Kick off a thread to act as the "remote" client
 821      * which just plays ping-pong with us
 822      */
 823     qemu_thread_create(&thread, "client",
 824                        char_socket_server_client_thread,
 825                        addr, QEMU_THREAD_JOINABLE);
 826     g_assert(data.event == -1);
 827
 828     if (config->wait_connected) {
 829         /* Synchronously accept a connection */
 830         qemu_chr_wait_connected(chr, &error_abort);
 831     } else {
 832         /*
 833          * Asynchronously accept a connection when the evnt
 834          * loop reports the listener socket as readable
 835          */
 836         while (data.event == -1) {
 837             main_loop_wait(false);
 838         }
 839     }
 840     g_assert(object_property_get_bool(OBJECT(chr), "connected", &error_abort));
 841     g_assert(data.event == CHR_EVENT_OPENED);
 842     data.event = -1;
 843
 844     /* Send a greeting to the client */
 845     ret = qemu_chr_fe_write_all(&be, (const uint8_t *)SOCKET_PING,
 846                                 sizeof(SOCKET_PING));
 847     g_assert_cmpint(ret, ==, sizeof(SOCKET_PING));
 848     g_assert(data.event == -1);
 849
 850     /* Setup a callback to receive the reply to our greeting */
 851     qemu_chr_fe_set_handlers(&be, char_socket_can_read,
 852                              char_socket_read,
 853                              char_socket_event, NULL,
 854                              &data, NULL, true);
 855     g_assert(data.event == CHR_EVENT_OPENED);
 856     data.event = -1;
 857
 858     /* Wait for the client to go away */
 859     while (data.event == -1) {
 860         main_loop_wait(false);
 861     }
 862     g_assert(!object_property_get_bool(OBJECT(chr), "connected", &error_abort));
 863     g_assert(data.event == CHR_EVENT_CLOSED);
 864     g_assert(data.got_pong);
 865
 866     qemu_thread_join(&thread);
 867
 868     if (!reconnected) {
 869         reconnected = true;
 870         goto reconnect;
 871     }
 872
 873     qapi_free_SocketAddress(addr);
 874     object_unparent(OBJECT(chr));
 875     g_free(optstr);
 876     g_unsetenv("QTEST_SILENT_ERRORS");
 877 }
 878
 879
 880 static gpointer
 881 char_socket_client_server_thread(gpointer data)
 882 {
 883     QIOChannelSocket *ioc = data;
 884     QIOChannelSocket *cioc;
 885
 886 retry:
 887     cioc = qio_channel_socket_accept(ioc, &error_abort);
 888     g_assert_nonnull(cioc);
 889
 890     if (char_socket_ping_pong(QIO_CHANNEL(cioc), NULL) != 0) {
 891         goto retry;
 892     }
 893
 894     return NULL;
 895 }
 896
 897
 898 typedef struct {
 899     SocketAddress *addr;
 900     const char *reconnect;
 901     bool wait_connected;
 902     bool fd_pass;
 903     char_socket_cb event_cb;
 904 } CharSocketClientTestConfig;
 905
 906 static void char_socket_client_dupid_test(gconstpointer opaque)
 907 {
 908     const CharSocketClientTestConfig *config = opaque;
 909     QIOChannelSocket *ioc;
 910     char *optstr;
 911     Chardev *chr1, *chr2;
 912     SocketAddress *addr;
 913     QemuOpts *opts;
 914     Error *local_err = NULL;
 915
 916     /*
 917      * Setup a listener socket and determine get its address
 918      * so we know the TCP port for the client later
 919      */
 920     ioc = qio_channel_socket_new();
 921     g_assert_nonnull(ioc);
 922     qio_channel_socket_listen_sync(ioc, config->addr, 1, &error_abort);
 923     addr = qio_channel_socket_get_local_address(ioc, &error_abort);
 924     g_assert_nonnull(addr);
 925
 926     /*
 927      * Populate the chardev address based on what the server
 928      * is actually listening on
 929      */
 930     optstr = char_socket_addr_to_opt_str(addr,
 931                                          config->fd_pass,
 932                                          config->reconnect,
 933                                          false);
 934
 935     opts = qemu_opts_parse_noisily(qemu_find_opts("chardev"),
 936                                    optstr, true);
 937     g_assert_nonnull(opts);
 938     chr1 = qemu_chr_new_from_opts(opts, NULL, &error_abort);
 939     g_assert_nonnull(chr1);
 940
 941     chr2 = qemu_chr_new_from_opts(opts, NULL, &local_err);
 942     g_assert_null(chr2);
 943     error_free_or_abort(&local_err);
 944
 945     object_unref(OBJECT(ioc));
 946     qemu_opts_del(opts);
 947     object_unparent(OBJECT(chr1));
 948     qapi_free_SocketAddress(addr);
 949     g_free(optstr);
 950 }
 951
 952 static void char_socket_client_test(gconstpointer opaque)
 953 {
 954     const CharSocketClientTestConfig *config = opaque;
 955     const char_socket_cb event_cb = config->event_cb;
 956     QIOChannelSocket *ioc;
 957     char *optstr;
 958     Chardev *chr;
 959     CharBackend be = {0};
 960     CharSocketTestData data = {0};
 961     SocketAddress *addr;
 962     QemuThread thread;
 963     int ret;
 964     bool reconnected = false;
 965     QemuOpts *opts;
 966
 967     /*
 968      * Setup a listener socket and determine get its address
 969      * so we know the TCP port for the client later
 970      */
 971     ioc = qio_channel_socket_new();
 972     g_assert_nonnull(ioc);
 973     qio_channel_socket_listen_sync(ioc, config->addr, 1, &error_abort);
 974     addr = qio_channel_socket_get_local_address(ioc, &error_abort);
 975     g_assert_nonnull(addr);
 976
 977     /*
 978      * Kick off a thread to act as the "remote" client
 979      * which just plays ping-pong with us
 980      */
 981     qemu_thread_create(&thread, "client",
 982                        char_socket_client_server_thread,
 983                        ioc, QEMU_THREAD_JOINABLE);
 984
 985     /*
 986      * Populate the chardev address based on what the server
 987      * is actually listening on
 988      */
 989     optstr = char_socket_addr_to_opt_str(addr,
 990                                          config->fd_pass,
 991                                          config->reconnect,
 992                                          false);
 993
 994     opts = qemu_opts_parse_noisily(qemu_find_opts("chardev"),
 995                                    optstr, true);
 996     g_assert_nonnull(opts);
 997     chr = qemu_chr_new_from_opts(opts, NULL, &error_abort);
 998     qemu_opts_del(opts);
 999     g_assert_nonnull(chr);
1000
1001     if (config->reconnect) {
1002         /*
1003          * If reconnect is set, the connection will be
1004          * established in a background thread and we won't
1005          * see the "connected" status updated until we
1006          * run the main event loop, or call qemu_chr_wait_connected
1007          */
1008         g_assert(!object_property_get_bool(OBJECT(chr), "connected",
1009                                            &error_abort));
1010     } else {
1011         g_assert(object_property_get_bool(OBJECT(chr), "connected",
1012                                           &error_abort));
1013     }
1014
1015     qemu_chr_fe_init(&be, chr, &error_abort);
1016
1017  reconnect:
1018     data.event = -1;
1019     data.be = &be;
1020     qemu_chr_fe_set_handlers(&be, NULL, NULL,
1021                              event_cb, NULL,
1022                              &data, NULL, true);
1023     if (config->reconnect) {
1024         g_assert(data.event == -1);
1025     } else {
1026         g_assert(data.event == CHR_EVENT_OPENED);
1027     }
1028
1029     if (config->wait_connected) {
1030         /*
1031          * Synchronously wait for the connection to complete
1032          * This should be a no-op if reconnect is not set.
1033          */
1034         qemu_chr_wait_connected(chr, &error_abort);
1035     } else {
1036         /*
1037          * Asynchronously wait for the connection to be reported
1038          * as complete when the background thread reports its
1039          * status.
1040          * The loop will short-circuit if reconnect was set
1041          */
1042         while (data.event == -1) {
1043             main_loop_wait(false);
1044         }
1045     }
1046     g_assert(data.event == CHR_EVENT_OPENED);
1047     data.event = -1;
1048     g_assert(object_property_get_bool(OBJECT(chr), "connected", &error_abort));
1049
1050     /* Send a greeting to the server */
1051     ret = qemu_chr_fe_write_all(&be, (const uint8_t *)SOCKET_PING,
1052                                 sizeof(SOCKET_PING));
1053     g_assert_cmpint(ret, ==, sizeof(SOCKET_PING));
1054     g_assert(data.event == -1);
1055
1056     /* Setup a callback to receive the reply to our greeting */
1057     qemu_chr_fe_set_handlers(&be, char_socket_can_read,
1058                              char_socket_read,
1059                              event_cb, NULL,
1060                              &data, NULL, true);
1061     g_assert(data.event == CHR_EVENT_OPENED);
1062     data.event = -1;
1063
1064     /* Wait for the server to go away */
1065     while (data.event == -1) {
1066         main_loop_wait(false);
1067     }
1068     g_assert(data.event == CHR_EVENT_CLOSED);
1069     g_assert(!object_property_get_bool(OBJECT(chr), "connected", &error_abort));
1070     g_assert(data.got_pong);
1071     qemu_thread_join(&thread);
1072
1073     if (config->reconnect && !reconnected) {
1074         reconnected = true;
1075         qemu_thread_create(&thread, "client",
1076                            char_socket_client_server_thread,
1077                            ioc, QEMU_THREAD_JOINABLE);
1078         goto reconnect;
1079     }
1080
1081     object_unref(OBJECT(ioc));
1082     object_unparent(OBJECT(chr));
1083     qapi_free_SocketAddress(addr);
1084     g_free(optstr);
1085 }
1086
1087 static void
1088 count_closed_event(void *opaque, QEMUChrEvent event)
1089 {
1090     int *count = opaque;
1091     if (event == CHR_EVENT_CLOSED) {
1092         (*count)++;
1093     }
1094 }
1095
1096 static void
1097 char_socket_discard_read(void *opaque, const uint8_t *buf, int size)
1098 {
1099 }
1100
1101 static void char_socket_server_two_clients_test(gconstpointer opaque)
1102 {
1103     SocketAddress *incoming_addr = (gpointer) opaque;
1104     Chardev *chr;
1105     CharBackend be = {0};
1106     QObject *qaddr;
1107     SocketAddress *addr;
1108     Visitor *v;
1109     char *optstr;
1110     QemuOpts *opts;
1111     QIOChannelSocket *ioc1, *ioc2;
1112     int closed = 0;
1113
1114     g_setenv("QTEST_SILENT_ERRORS", "1", 1);
1115     /*
1116      * We rely on addr containing "nowait", otherwise
1117      * qemu_chr_new() will block until a client connects. We
1118      * can't spawn our client thread though, because until
1119      * qemu_chr_new() returns we don't know what TCP port was
1120      * allocated by the OS
1121      */
1122     optstr = char_socket_addr_to_opt_str(incoming_addr,
1123                                          false,
1124                                          NULL,
1125                                          true);
1126     opts = qemu_opts_parse_noisily(qemu_find_opts("chardev"),
1127                                    optstr, true);
1128     g_assert_nonnull(opts);
1129     chr = qemu_chr_new_from_opts(opts, NULL, &error_abort);
1130     qemu_opts_del(opts);
1131     g_assert_nonnull(chr);
1132     g_assert(!object_property_get_bool(OBJECT(chr), "connected", &error_abort));
1133
1134     qaddr = object_property_get_qobject(OBJECT(chr), "addr", &error_abort);
1135     g_assert_nonnull(qaddr);
1136
1137     v = qobject_input_visitor_new(qaddr);
1138     visit_type_SocketAddress(v, "addr", &addr, &error_abort);
1139     visit_free(v);
1140     qobject_unref(qaddr);
1141
1142     qemu_chr_fe_init(&be, chr, &error_abort);
1143
1144     qemu_chr_fe_set_handlers(&be, char_socket_can_read, char_socket_discard_read,
1145                              count_closed_event, NULL,
1146                              &closed, NULL, true);
1147
1148     ioc1 = qio_channel_socket_new();
1149     qio_channel_socket_connect_sync(ioc1, addr, &error_abort);
1150     qemu_chr_wait_connected(chr, &error_abort);
1151
1152     /* switch the chardev to another context */
1153     GMainContext *ctx = g_main_context_new();
1154     qemu_chr_fe_set_handlers(&be, char_socket_can_read, char_socket_discard_read,
1155                              count_closed_event, NULL,
1156                              &closed, ctx, true);
1157
1158     /* Start a second connection while the first is still connected.
1159      * It will be placed in the listen() backlog, and connect() will
1160      * succeed immediately.
1161      */
1162     ioc2 = qio_channel_socket_new();
1163     qio_channel_socket_connect_sync(ioc2, addr, &error_abort);
1164
1165     object_unref(OBJECT(ioc1));
1166     /* The two connections should now be processed serially.  */
1167     while (g_main_context_iteration(ctx, TRUE)) {
1168         if (closed == 1 && ioc2) {
1169             object_unref(OBJECT(ioc2));
1170             ioc2 = NULL;
1171         }
1172         if (closed == 2) {
1173             break;
1174         }
1175     }
1176
1177     qapi_free_SocketAddress(addr);
1178     object_unparent(OBJECT(chr));
1179     g_main_context_unref(ctx);
1180     g_free(optstr);
1181     g_unsetenv("QTEST_SILENT_ERRORS");
1182 }
1183
1184
1185 #if defined(HAVE_CHARDEV_SERIAL) && !defined(WIN32)
1186 static void char_serial_test(void)
1187 {
1188     QemuOpts *opts;
1189     Chardev *chr;
1190
1191     opts = qemu_opts_create(qemu_find_opts("chardev"), "serial-id",
1192                             1, &error_abort);
1193     qemu_opt_set(opts, "backend", "serial", &error_abort);
1194     qemu_opt_set(opts, "path", "/dev/null", &error_abort);
1195
1196     chr = qemu_chr_new_from_opts(opts, NULL, NULL);
1197     g_assert_nonnull(chr);
1198     /* TODO: add more tests with a pty */
1199     object_unparent(OBJECT(chr));
1200
1201     /* test tty alias */
1202     qemu_opt_set(opts, "backend", "tty", &error_abort);
1203     chr = qemu_chr_new_from_opts(opts, NULL, &error_abort);
1204     g_assert_nonnull(chr);
1205     object_unparent(OBJECT(chr));
1206
1207     qemu_opts_del(opts);
1208 }
1209 #endif
1210
1211 #ifndef _WIN32
1212 static void char_file_fifo_test(void)
1213 {
1214     Chardev *chr;
1215     CharBackend be;
1216     char *tmp_path = g_dir_make_tmp("qemu-test-char.XXXXXX", NULL);
1217     char *fifo = g_build_filename(tmp_path, "fifo", NULL);
1218     char *out = g_build_filename(tmp_path, "out", NULL);
1219     ChardevFile file = { .in = fifo,
1220                          .has_in = true,
1221                          .out = out };
1222     ChardevBackend backend = { .type = CHARDEV_BACKEND_KIND_FILE,
1223                                .u.file.data = &file };
1224     FeHandler fe = { 0, };
1225     int fd, ret;
1226
1227     if (mkfifo(fifo, 0600) < 0) {
1228         abort();
1229     }
1230
1231     fd = open(fifo, O_RDWR);
1232     ret = write(fd, "fifo-in", 8);
1233     g_assert_cmpint(ret, ==, 8);
1234
1235     chr = qemu_chardev_new("label-file", TYPE_CHARDEV_FILE, &backend,
1236                            NULL, &error_abort);
1237
1238     qemu_chr_fe_init(&be, chr, &error_abort);
1239     qemu_chr_fe_set_handlers(&be,
1240                              fe_can_read,
1241                              fe_read,
1242                              fe_event,
1243                              NULL,
1244                              &fe, NULL, true);
1245
1246     g_assert_cmpint(fe.last_event, !=, CHR_EVENT_BREAK);
1247     qmp_chardev_send_break("label-foo", NULL);
1248     g_assert_cmpint(fe.last_event, !=, CHR_EVENT_BREAK);
1249     qmp_chardev_send_break("label-file", NULL);
1250     g_assert_cmpint(fe.last_event, ==, CHR_EVENT_BREAK);
1251
1252     main_loop();
1253
1254     close(fd);
1255
1256     g_assert_cmpint(fe.read_count, ==, 8);
1257     g_assert_cmpstr(fe.read_buf, ==, "fifo-in");
1258
1259     qemu_chr_fe_deinit(&be, true);
1260
1261     g_unlink(fifo);
1262     g_free(fifo);
1263     g_unlink(out);
1264     g_free(out);
1265     g_rmdir(tmp_path);
1266     g_free(tmp_path);
1267 }
1268 #endif
1269
1270 static void char_file_test_internal(Chardev *ext_chr, const char *filepath)
1271 {
1272     char *tmp_path = g_dir_make_tmp("qemu-test-char.XXXXXX", NULL);
1273     char *out;
1274     Chardev *chr;
1275     char *contents = NULL;
1276     ChardevFile file = {};
1277     ChardevBackend backend = { .type = CHARDEV_BACKEND_KIND_FILE,
1278                                .u.file.data = &file };
1279     gsize length;
1280     int ret;
1281
1282     if (ext_chr) {
1283         chr = ext_chr;
1284         out = g_strdup(filepath);
1285         file.out = out;
1286     } else {
1287         out = g_build_filename(tmp_path, "out", NULL);
1288         file.out = out;
1289         chr = qemu_chardev_new(NULL, TYPE_CHARDEV_FILE, &backend,
1290                                NULL, &error_abort);
1291     }
1292     ret = qemu_chr_write_all(chr, (uint8_t *)"hello!", 6);
1293     g_assert_cmpint(ret, ==, 6);
1294
1295     ret = g_file_get_contents(out, &contents, &length, NULL);
1296     g_assert(ret == TRUE);
1297     g_assert_cmpint(length, ==, 6);
1298     g_assert(strncmp(contents, "hello!", 6) == 0);
1299
1300     if (!ext_chr) {
1301         object_unref(OBJECT(chr));
1302         g_unlink(out);
1303     }
1304     g_free(contents);
1305     g_rmdir(tmp_path);
1306     g_free(tmp_path);
1307     g_free(out);
1308 }
1309
1310 static void char_file_test(void)
1311 {
1312     char_file_test_internal(NULL, NULL);
1313 }
1314
1315 static void char_null_test(void)
1316 {
1317     Error *err = NULL;
1318     Chardev *chr;
1319     CharBackend be;
1320     int ret;
1321
1322     chr = qemu_chr_find("label-null");
1323     g_assert_null(chr);
1324
1325     chr = qemu_chr_new("label-null", "null", NULL);
1326     chr = qemu_chr_find("label-null");
1327     g_assert_nonnull(chr);
1328
1329     g_assert(qemu_chr_has_feature(chr,
1330                  QEMU_CHAR_FEATURE_FD_PASS) == false);
1331     g_assert(qemu_chr_has_feature(chr,
1332                  QEMU_CHAR_FEATURE_RECONNECTABLE) == false);
1333
1334     /* check max avail */
1335     qemu_chr_fe_init(&be, chr, &error_abort);
1336     qemu_chr_fe_init(&be, chr, &err);
1337     error_free_or_abort(&err);
1338
1339     /* deinit & reinit */
1340     qemu_chr_fe_deinit(&be, false);
1341     qemu_chr_fe_init(&be, chr, &error_abort);
1342
1343     qemu_chr_fe_set_open(&be, true);
1344
1345     qemu_chr_fe_set_handlers(&be,
1346                              fe_can_read,
1347                              fe_read,
1348                              fe_event,
1349                              NULL,
1350                              NULL, NULL, true);
1351
1352     ret = qemu_chr_fe_write(&be, (void *)"buf", 4);
1353     g_assert_cmpint(ret, ==, 4);
1354
1355     qemu_chr_fe_deinit(&be, true);
1356 }
1357
1358 static void char_invalid_test(void)
1359 {
1360     Chardev *chr;
1361     g_setenv("QTEST_SILENT_ERRORS", "1", 1);
1362     chr = qemu_chr_new("label-invalid", "invalid", NULL);
1363     g_assert_null(chr);
1364     g_unsetenv("QTEST_SILENT_ERRORS");
1365 }
1366
1367 static int chardev_change(void *opaque)
1368 {
1369     return 0;
1370 }
1371
1372 static int chardev_change_denied(void *opaque)
1373 {
1374     return -1;
1375 }
1376
1377 static void char_hotswap_test(void)
1378 {
1379     char *chr_args;
1380     Chardev *chr;
1381     CharBackend be;
1382
1383     gchar *tmp_path = g_dir_make_tmp("qemu-test-char.XXXXXX", NULL);
1384     char *filename = g_build_filename(tmp_path, "file", NULL);
1385     ChardevFile file = { .out = filename };
1386     ChardevBackend backend = { .type = CHARDEV_BACKEND_KIND_FILE,
1387                                .u.file.data = &file };
1388     ChardevReturn *ret;
1389
1390     int port;
1391     int sock = make_udp_socket(&port);
1392     g_assert_cmpint(sock, >, 0);
1393
1394     chr_args = g_strdup_printf("udp:127.0.0.1:%d", port);
1395
1396     chr = qemu_chr_new("chardev", chr_args, NULL);
1397     qemu_chr_fe_init(&be, chr, &error_abort);
1398
1399     /* check that chardev operates correctly */
1400     char_udp_test_internal(chr, sock);
1401
1402     /* set the handler that denies the hotswap */
1403     qemu_chr_fe_set_handlers(&be, NULL, NULL,
1404                              NULL, chardev_change_denied, NULL, NULL, true);
1405
1406     /* now, change is denied and has to keep the old backend operating */
1407     ret = qmp_chardev_change("chardev", &backend, NULL);
1408     g_assert(!ret);
1409     g_assert(be.chr == chr);
1410
1411     char_udp_test_internal(chr, sock);
1412
1413     /* now allow the change */
1414     qemu_chr_fe_set_handlers(&be, NULL, NULL,
1415                              NULL, chardev_change, NULL, NULL, true);
1416
1417     /* has to succeed now */
1418     ret = qmp_chardev_change("chardev", &backend, &error_abort);
1419     g_assert(be.chr != chr);
1420
1421     close(sock);
1422     chr = be.chr;
1423
1424     /* run the file chardev test */
1425     char_file_test_internal(chr, filename);
1426
1427     object_unparent(OBJECT(chr));
1428
1429     qapi_free_ChardevReturn(ret);
1430     g_unlink(filename);
1431     g_free(filename);
1432     g_rmdir(tmp_path);
1433     g_free(tmp_path);
1434     g_free(chr_args);
1435 }
1436
1437 static SocketAddress tcpaddr = {
1438     .type = SOCKET_ADDRESS_TYPE_INET,
1439     .u.inet.host = (char *)"127.0.0.1",
1440     .u.inet.port = (char *)"0",
1441 };
1442 #ifndef WIN32
1443 static SocketAddress unixaddr = {
1444     .type = SOCKET_ADDRESS_TYPE_UNIX,
1445     .u.q_unix.path = (char *)"test-char.sock",
1446 };
1447 #endif
1448
1449 int main(int argc, char **argv)
1450 {
1451     bool has_ipv4, has_ipv6;
1452
1453     qemu_init_main_loop(&error_abort);
1454     socket_init();
1455
1456     g_test_init(&argc, &argv, NULL);
1457
1458     if (socket_check_protocol_support(&has_ipv4, &has_ipv6) < 0) {
1459         g_printerr("socket_check_protocol_support() failed\n");
1460         goto end;
1461     }
1462
1463     module_call_init(MODULE_INIT_QOM);
1464     qemu_add_opts(&qemu_chardev_opts);
1465
1466     g_test_add_func("/char/null", char_null_test);
1467     g_test_add_func("/char/invalid", char_invalid_test);
1468     g_test_add_func("/char/ringbuf", char_ringbuf_test);
1469     g_test_add_func("/char/mux", char_mux_test);
1470 #ifdef _WIN32
1471     g_test_add_func("/char/console/subprocess", char_console_test_subprocess);
1472     g_test_add_func("/char/console", char_console_test);
1473 #endif
1474     g_test_add_func("/char/stdio/subprocess", char_stdio_test_subprocess);
1475     g_test_add_func("/char/stdio", char_stdio_test);
1476 #ifndef _WIN32
1477     g_test_add_func("/char/pipe", char_pipe_test);
1478 #endif
1479     g_test_add_func("/char/file", char_file_test);
1480 #ifndef _WIN32
1481     g_test_add_func("/char/file-fifo", char_file_fifo_test);
1482 #endif
1483
1484 #define SOCKET_SERVER_TEST(name, addr)                                  \
1485     static CharSocketServerTestConfig server1 ## name =                 \
1486         { addr, false, false };                                         \
1487     static CharSocketServerTestConfig server2 ## name =                 \
1488         { addr, true, false };                                          \
1489     static CharSocketServerTestConfig server3 ## name =                 \
1490         { addr, false, true };                                          \
1491     static CharSocketServerTestConfig server4 ## name =                 \
1492         { addr, true, true };                                           \
1493     g_test_add_data_func("/char/socket/server/mainloop/" # name,        \
1494                          &server1 ##name, char_socket_server_test);     \
1495     g_test_add_data_func("/char/socket/server/wait-conn/" # name,       \
1496                          &server2 ##name, char_socket_server_test);     \
1497     g_test_add_data_func("/char/socket/server/mainloop-fdpass/" # name, \
1498                          &server3 ##name, char_socket_server_test);     \
1499     g_test_add_data_func("/char/socket/server/wait-conn-fdpass/" # name, \
1500                          &server4 ##name, char_socket_server_test)
1501
1502 #define SOCKET_CLIENT_TEST(name, addr)                                  \
1503     static CharSocketClientTestConfig client1 ## name =                 \
1504         { addr, NULL, false, false, char_socket_event };                \
1505     static CharSocketClientTestConfig client2 ## name =                 \
1506         { addr, NULL, true, false, char_socket_event };                 \
1507     static CharSocketClientTestConfig client3 ## name =                 \
1508         { addr, ",reconnect=1", false, false, char_socket_event };      \
1509     static CharSocketClientTestConfig client4 ## name =                 \
1510         { addr, ",reconnect=1", true, false, char_socket_event };       \
1511     static CharSocketClientTestConfig client5 ## name =                 \
1512         { addr, NULL, false, true, char_socket_event };                 \
1513     static CharSocketClientTestConfig client6 ## name =                 \
1514         { addr, NULL, true, true, char_socket_event };                  \
1515     static CharSocketClientTestConfig client7 ## name =                 \
1516         { addr, ",reconnect=1", true, false,                            \
1517             char_socket_event_with_error };                             \
1518     static CharSocketClientTestConfig client8 ## name =                 \
1519         { addr, ",reconnect=1", false, false, char_socket_event };      \
1520     g_test_add_data_func("/char/socket/client/mainloop/" # name,        \
1521                          &client1 ##name, char_socket_client_test);     \
1522     g_test_add_data_func("/char/socket/client/wait-conn/" # name,       \
1523                          &client2 ##name, char_socket_client_test);     \
1524     g_test_add_data_func("/char/socket/client/mainloop-reconnect/" # name, \
1525                          &client3 ##name, char_socket_client_test);     \
1526     g_test_add_data_func("/char/socket/client/wait-conn-reconnect/" # name, \
1527                          &client4 ##name, char_socket_client_test);     \
1528     g_test_add_data_func("/char/socket/client/mainloop-fdpass/" # name, \
1529                          &client5 ##name, char_socket_client_test);     \
1530     g_test_add_data_func("/char/socket/client/wait-conn-fdpass/" # name, \
1531                          &client6 ##name, char_socket_client_test);     \
1532     g_test_add_data_func("/char/socket/client/reconnect-error/" # name, \
1533                          &client7 ##name, char_socket_client_test);     \
1534     g_test_add_data_func("/char/socket/client/dupid-reconnect/" # name, \
1535                          &client8 ##name, char_socket_client_dupid_test)
1536
1537     if (has_ipv4) {
1538         SOCKET_SERVER_TEST(tcp, &tcpaddr);
1539         SOCKET_CLIENT_TEST(tcp, &tcpaddr);
1540         g_test_add_data_func("/char/socket/server/two-clients/tcp", &tcpaddr,
1541                              char_socket_server_two_clients_test);
1542     }
1543 #ifndef WIN32
1544     SOCKET_SERVER_TEST(unix, &unixaddr);
1545     SOCKET_CLIENT_TEST(unix, &unixaddr);
1546     g_test_add_data_func("/char/socket/server/two-clients/unix", &unixaddr,
1547                          char_socket_server_two_clients_test);
1548 #endif
1549
1550     g_test_add_func("/char/udp", char_udp_test);
1551 #if defined(HAVE_CHARDEV_SERIAL) && !defined(WIN32)
1552     g_test_add_func("/char/serial", char_serial_test);
1553 #endif
1554     g_test_add_func("/char/hotswap", char_hotswap_test);
1555     g_test_add_func("/char/websocket", char_websock_test);
1556
1557 end:
1558     return g_test_run();
1559 }