1 /* 2 * QEMU System Emulator 3 * 4 * Copyright (c) 2003-2008 Fabrice Bellard 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to deal 8 * in the Software without restriction, including without limitation the rights 9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 * copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 22 * THE SOFTWARE. 23 */ 24 25 #include "qemu/osdep.h" 26 #include "chardev/char.h" 27 #include "io/channel-socket.h" 28 #include "io/channel-tls.h" 29 #include "io/channel-websock.h" 30 #include "io/net-listener.h" 31 #include "qemu/error-report.h" 32 #include "qemu/option.h" 33 #include "qapi/error.h" 34 #include "qapi/clone-visitor.h" 35 #include "qapi/qapi-visit-sockets.h" 36 37 #include "chardev/char-io.h" 38 39 /***********************************************************/ 40 /* TCP Net console */ 41 42 #define TCP_MAX_FDS 16 43 44 typedef struct { 45 char buf[21]; 46 size_t buflen; 47 } TCPChardevTelnetInit; 48 49 typedef enum { 50 TCP_CHARDEV_STATE_DISCONNECTED, 51 TCP_CHARDEV_STATE_CONNECTING, 52 TCP_CHARDEV_STATE_CONNECTED, 53 } TCPChardevState; 54 55 typedef struct { 56 Chardev parent; 57 QIOChannel *ioc; /* Client I/O channel */ 58 QIOChannelSocket *sioc; /* Client master channel */ 59 QIONetListener *listener; 60 GSource *hup_source; 61 QCryptoTLSCreds *tls_creds; 62 TCPChardevState state; 63 int max_size; 64 int do_telnetopt; 65 int do_nodelay; 66 int *read_msgfds; 67 size_t read_msgfds_num; 68 int *write_msgfds; 69 size_t write_msgfds_num; 70 71 SocketAddress *addr; 72 bool is_listen; 73 bool is_telnet; 74 bool is_tn3270; 75 GSource *telnet_source; 76 TCPChardevTelnetInit *telnet_init; 77 78 bool is_websock; 79 80 GSource *reconnect_timer; 81 int64_t reconnect_time; 82 bool connect_err_reported; 83 84 QIOTask *connect_task; 85 } SocketChardev; 86 87 #define SOCKET_CHARDEV(obj) \ 88 OBJECT_CHECK(SocketChardev, (obj), TYPE_CHARDEV_SOCKET) 89 90 static gboolean socket_reconnect_timeout(gpointer opaque); 91 static void tcp_chr_telnet_init(Chardev *chr); 92 93 static void tcp_chr_change_state(SocketChardev *s, TCPChardevState state) 94 { 95 switch (state) { 96 case TCP_CHARDEV_STATE_DISCONNECTED: 97 break; 98 case TCP_CHARDEV_STATE_CONNECTING: 99 assert(s->state == TCP_CHARDEV_STATE_DISCONNECTED); 100 break; 101 case TCP_CHARDEV_STATE_CONNECTED: 102 assert(s->state == TCP_CHARDEV_STATE_CONNECTING); 103 break; 104 } 105 s->state = state; 106 } 107 108 static void tcp_chr_reconn_timer_cancel(SocketChardev *s) 109 { 110 if (s->reconnect_timer) { 111 g_source_destroy(s->reconnect_timer); 112 g_source_unref(s->reconnect_timer); 113 s->reconnect_timer = NULL; 114 } 115 } 116 117 static void qemu_chr_socket_restart_timer(Chardev *chr) 118 { 119 SocketChardev *s = SOCKET_CHARDEV(chr); 120 char *name; 121 122 assert(s->state == TCP_CHARDEV_STATE_DISCONNECTED); 123 assert(!s->reconnect_timer); 124 name = g_strdup_printf("chardev-socket-reconnect-%s", chr->label); 125 s->reconnect_timer = qemu_chr_timeout_add_ms(chr, 126 s->reconnect_time * 1000, 127 socket_reconnect_timeout, 128 chr); 129 g_source_set_name(s->reconnect_timer, name); 130 g_free(name); 131 } 132 133 static void check_report_connect_error(Chardev *chr, 134 Error *err) 135 { 136 SocketChardev *s = SOCKET_CHARDEV(chr); 137 138 if (!s->connect_err_reported) { 139 error_report("Unable to connect character device %s: %s", 140 chr->label, error_get_pretty(err)); 141 s->connect_err_reported = true; 142 } 143 qemu_chr_socket_restart_timer(chr); 144 } 145 146 static void tcp_chr_accept(QIONetListener *listener, 147 QIOChannelSocket *cioc, 148 void *opaque); 149 150 static int tcp_chr_read_poll(void *opaque); 151 static void tcp_chr_disconnect(Chardev *chr); 152 153 /* Called with chr_write_lock held. */ 154 static int tcp_chr_write(Chardev *chr, const uint8_t *buf, int len) 155 { 156 SocketChardev *s = SOCKET_CHARDEV(chr); 157 158 if (s->state == TCP_CHARDEV_STATE_CONNECTED) { 159 int ret = io_channel_send_full(s->ioc, buf, len, 160 s->write_msgfds, 161 s->write_msgfds_num); 162 163 /* free the written msgfds in any cases 164 * other than ret < 0 && errno == EAGAIN 165 */ 166 if (!(ret < 0 && EAGAIN == errno) 167 && s->write_msgfds_num) { 168 g_free(s->write_msgfds); 169 s->write_msgfds = 0; 170 s->write_msgfds_num = 0; 171 } 172 173 if (ret < 0 && errno != EAGAIN) { 174 if (tcp_chr_read_poll(chr) <= 0) { 175 tcp_chr_disconnect(chr); 176 return len; 177 } /* else let the read handler finish it properly */ 178 } 179 180 return ret; 181 } else { 182 /* XXX: indicate an error ? */ 183 return len; 184 } 185 } 186 187 static int tcp_chr_read_poll(void *opaque) 188 { 189 Chardev *chr = CHARDEV(opaque); 190 SocketChardev *s = SOCKET_CHARDEV(opaque); 191 if (s->state != TCP_CHARDEV_STATE_CONNECTED) { 192 return 0; 193 } 194 s->max_size = qemu_chr_be_can_write(chr); 195 return s->max_size; 196 } 197 198 static void tcp_chr_process_IAC_bytes(Chardev *chr, 199 SocketChardev *s, 200 uint8_t *buf, int *size) 201 { 202 /* Handle any telnet or tn3270 client's basic IAC options. 203 * For telnet options, it satisfies char by char mode with no echo. 204 * For tn3270 options, it satisfies binary mode with EOR. 205 * All IAC options will be removed from the buf and the do_opt 206 * pointer will be used to track the state of the width of the 207 * IAC information. 208 * 209 * RFC854: "All TELNET commands consist of at least a two byte sequence. 210 * The commands dealing with option negotiation are three byte sequences, 211 * the third byte being the code for the option referenced." 212 * "IAC BREAK", "IAC IP", "IAC NOP" and the double IAC are two bytes. 213 * "IAC SB", "IAC SE" and "IAC EOR" are saved to split up data boundary 214 * for tn3270. 215 * NOP, Break and Interrupt Process(IP) might be encountered during a TN3270 216 * session, and NOP and IP need to be done later. 217 */ 218 219 int i; 220 int j = 0; 221 222 for (i = 0; i < *size; i++) { 223 if (s->do_telnetopt > 1) { 224 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) { 225 /* Double IAC means send an IAC */ 226 if (j != i) { 227 buf[j] = buf[i]; 228 } 229 j++; 230 s->do_telnetopt = 1; 231 } else { 232 if ((unsigned char)buf[i] == IAC_BREAK 233 && s->do_telnetopt == 2) { 234 /* Handle IAC break commands by sending a serial break */ 235 qemu_chr_be_event(chr, CHR_EVENT_BREAK); 236 s->do_telnetopt++; 237 } else if (s->is_tn3270 && ((unsigned char)buf[i] == IAC_EOR 238 || (unsigned char)buf[i] == IAC_SB 239 || (unsigned char)buf[i] == IAC_SE) 240 && s->do_telnetopt == 2) { 241 buf[j++] = IAC; 242 buf[j++] = buf[i]; 243 s->do_telnetopt++; 244 } else if (s->is_tn3270 && ((unsigned char)buf[i] == IAC_IP 245 || (unsigned char)buf[i] == IAC_NOP) 246 && s->do_telnetopt == 2) { 247 /* TODO: IP and NOP need to be implemented later. */ 248 s->do_telnetopt++; 249 } 250 s->do_telnetopt++; 251 } 252 if (s->do_telnetopt >= 4) { 253 s->do_telnetopt = 1; 254 } 255 } else { 256 if ((unsigned char)buf[i] == IAC) { 257 s->do_telnetopt = 2; 258 } else { 259 if (j != i) { 260 buf[j] = buf[i]; 261 } 262 j++; 263 } 264 } 265 } 266 *size = j; 267 } 268 269 static int tcp_get_msgfds(Chardev *chr, int *fds, int num) 270 { 271 SocketChardev *s = SOCKET_CHARDEV(chr); 272 273 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num; 274 275 assert(num <= TCP_MAX_FDS); 276 277 if (to_copy) { 278 int i; 279 280 memcpy(fds, s->read_msgfds, to_copy * sizeof(int)); 281 282 /* Close unused fds */ 283 for (i = to_copy; i < s->read_msgfds_num; i++) { 284 close(s->read_msgfds[i]); 285 } 286 287 g_free(s->read_msgfds); 288 s->read_msgfds = 0; 289 s->read_msgfds_num = 0; 290 } 291 292 return to_copy; 293 } 294 295 static int tcp_set_msgfds(Chardev *chr, int *fds, int num) 296 { 297 SocketChardev *s = SOCKET_CHARDEV(chr); 298 299 /* clear old pending fd array */ 300 g_free(s->write_msgfds); 301 s->write_msgfds = NULL; 302 s->write_msgfds_num = 0; 303 304 if ((s->state != TCP_CHARDEV_STATE_CONNECTED) || 305 !qio_channel_has_feature(s->ioc, 306 QIO_CHANNEL_FEATURE_FD_PASS)) { 307 return -1; 308 } 309 310 if (num) { 311 s->write_msgfds = g_new(int, num); 312 memcpy(s->write_msgfds, fds, num * sizeof(int)); 313 } 314 315 s->write_msgfds_num = num; 316 317 return 0; 318 } 319 320 static ssize_t tcp_chr_recv(Chardev *chr, char *buf, size_t len) 321 { 322 SocketChardev *s = SOCKET_CHARDEV(chr); 323 struct iovec iov = { .iov_base = buf, .iov_len = len }; 324 int ret; 325 size_t i; 326 int *msgfds = NULL; 327 size_t msgfds_num = 0; 328 329 if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) { 330 ret = qio_channel_readv_full(s->ioc, &iov, 1, 331 &msgfds, &msgfds_num, 332 NULL); 333 } else { 334 ret = qio_channel_readv_full(s->ioc, &iov, 1, 335 NULL, NULL, 336 NULL); 337 } 338 339 if (ret == QIO_CHANNEL_ERR_BLOCK) { 340 errno = EAGAIN; 341 ret = -1; 342 } else if (ret == -1) { 343 errno = EIO; 344 } 345 346 if (msgfds_num) { 347 /* close and clean read_msgfds */ 348 for (i = 0; i < s->read_msgfds_num; i++) { 349 close(s->read_msgfds[i]); 350 } 351 352 if (s->read_msgfds_num) { 353 g_free(s->read_msgfds); 354 } 355 356 s->read_msgfds = msgfds; 357 s->read_msgfds_num = msgfds_num; 358 } 359 360 for (i = 0; i < s->read_msgfds_num; i++) { 361 int fd = s->read_msgfds[i]; 362 if (fd < 0) { 363 continue; 364 } 365 366 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */ 367 qemu_set_block(fd); 368 369 #ifndef MSG_CMSG_CLOEXEC 370 qemu_set_cloexec(fd); 371 #endif 372 } 373 374 return ret; 375 } 376 377 static GSource *tcp_chr_add_watch(Chardev *chr, GIOCondition cond) 378 { 379 SocketChardev *s = SOCKET_CHARDEV(chr); 380 return qio_channel_create_watch(s->ioc, cond); 381 } 382 383 static void remove_hup_source(SocketChardev *s) 384 { 385 if (s->hup_source != NULL) { 386 g_source_destroy(s->hup_source); 387 g_source_unref(s->hup_source); 388 s->hup_source = NULL; 389 } 390 } 391 392 static void tcp_chr_free_connection(Chardev *chr) 393 { 394 SocketChardev *s = SOCKET_CHARDEV(chr); 395 int i; 396 397 if (s->read_msgfds_num) { 398 for (i = 0; i < s->read_msgfds_num; i++) { 399 close(s->read_msgfds[i]); 400 } 401 g_free(s->read_msgfds); 402 s->read_msgfds = NULL; 403 s->read_msgfds_num = 0; 404 } 405 406 remove_hup_source(s); 407 408 tcp_set_msgfds(chr, NULL, 0); 409 remove_fd_in_watch(chr); 410 object_unref(OBJECT(s->sioc)); 411 s->sioc = NULL; 412 object_unref(OBJECT(s->ioc)); 413 s->ioc = NULL; 414 g_free(chr->filename); 415 chr->filename = NULL; 416 tcp_chr_change_state(s, TCP_CHARDEV_STATE_DISCONNECTED); 417 } 418 419 static const char *qemu_chr_socket_protocol(SocketChardev *s) 420 { 421 if (s->is_telnet) { 422 return "telnet"; 423 } 424 return s->is_websock ? "websocket" : "tcp"; 425 } 426 427 static char *qemu_chr_socket_address(SocketChardev *s, const char *prefix) 428 { 429 switch (s->addr->type) { 430 case SOCKET_ADDRESS_TYPE_INET: 431 return g_strdup_printf("%s%s:%s:%s%s", prefix, 432 qemu_chr_socket_protocol(s), 433 s->addr->u.inet.host, 434 s->addr->u.inet.port, 435 s->is_listen ? ",server" : ""); 436 break; 437 case SOCKET_ADDRESS_TYPE_UNIX: 438 return g_strdup_printf("%sunix:%s%s", prefix, 439 s->addr->u.q_unix.path, 440 s->is_listen ? ",server" : ""); 441 break; 442 case SOCKET_ADDRESS_TYPE_FD: 443 return g_strdup_printf("%sfd:%s%s", prefix, s->addr->u.fd.str, 444 s->is_listen ? ",server" : ""); 445 break; 446 case SOCKET_ADDRESS_TYPE_VSOCK: 447 return g_strdup_printf("%svsock:%s:%s", prefix, 448 s->addr->u.vsock.cid, 449 s->addr->u.vsock.port); 450 default: 451 abort(); 452 } 453 } 454 455 static void update_disconnected_filename(SocketChardev *s) 456 { 457 Chardev *chr = CHARDEV(s); 458 459 g_free(chr->filename); 460 if (s->addr) { 461 chr->filename = qemu_chr_socket_address(s, "disconnected:"); 462 } else { 463 chr->filename = g_strdup("disconnected:socket"); 464 } 465 } 466 467 /* NB may be called even if tcp_chr_connect has not been 468 * reached, due to TLS or telnet initialization failure, 469 * so can *not* assume s->state == TCP_CHARDEV_STATE_CONNECTED 470 */ 471 static void tcp_chr_disconnect(Chardev *chr) 472 { 473 SocketChardev *s = SOCKET_CHARDEV(chr); 474 bool emit_close = s->state == TCP_CHARDEV_STATE_CONNECTED; 475 476 tcp_chr_free_connection(chr); 477 478 if (s->listener) { 479 qio_net_listener_set_client_func_full(s->listener, tcp_chr_accept, 480 chr, NULL, chr->gcontext); 481 } 482 update_disconnected_filename(s); 483 if (emit_close) { 484 qemu_chr_be_event(chr, CHR_EVENT_CLOSED); 485 } 486 if (s->reconnect_time) { 487 qemu_chr_socket_restart_timer(chr); 488 } 489 } 490 491 static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) 492 { 493 Chardev *chr = CHARDEV(opaque); 494 SocketChardev *s = SOCKET_CHARDEV(opaque); 495 uint8_t buf[CHR_READ_BUF_LEN]; 496 int len, size; 497 498 if ((s->state != TCP_CHARDEV_STATE_CONNECTED) || 499 s->max_size <= 0) { 500 return TRUE; 501 } 502 len = sizeof(buf); 503 if (len > s->max_size) { 504 len = s->max_size; 505 } 506 size = tcp_chr_recv(chr, (void *)buf, len); 507 if (size == 0 || (size == -1 && errno != EAGAIN)) { 508 /* connection closed */ 509 tcp_chr_disconnect(chr); 510 } else if (size > 0) { 511 if (s->do_telnetopt) { 512 tcp_chr_process_IAC_bytes(chr, s, buf, &size); 513 } 514 if (size > 0) { 515 qemu_chr_be_write(chr, buf, size); 516 } 517 } 518 519 return TRUE; 520 } 521 522 static gboolean tcp_chr_hup(QIOChannel *channel, 523 GIOCondition cond, 524 void *opaque) 525 { 526 Chardev *chr = CHARDEV(opaque); 527 tcp_chr_disconnect(chr); 528 return G_SOURCE_REMOVE; 529 } 530 531 static int tcp_chr_sync_read(Chardev *chr, const uint8_t *buf, int len) 532 { 533 SocketChardev *s = SOCKET_CHARDEV(chr); 534 int size; 535 536 if (s->state != TCP_CHARDEV_STATE_CONNECTED) { 537 return 0; 538 } 539 540 qio_channel_set_blocking(s->ioc, true, NULL); 541 size = tcp_chr_recv(chr, (void *) buf, len); 542 qio_channel_set_blocking(s->ioc, false, NULL); 543 if (size == 0) { 544 /* connection closed */ 545 tcp_chr_disconnect(chr); 546 } 547 548 return size; 549 } 550 551 static char *qemu_chr_compute_filename(SocketChardev *s) 552 { 553 struct sockaddr_storage *ss = &s->sioc->localAddr; 554 struct sockaddr_storage *ps = &s->sioc->remoteAddr; 555 socklen_t ss_len = s->sioc->localAddrLen; 556 socklen_t ps_len = s->sioc->remoteAddrLen; 557 char shost[NI_MAXHOST], sserv[NI_MAXSERV]; 558 char phost[NI_MAXHOST], pserv[NI_MAXSERV]; 559 const char *left = "", *right = ""; 560 561 switch (ss->ss_family) { 562 #ifndef _WIN32 563 case AF_UNIX: 564 return g_strdup_printf("unix:%s%s", 565 ((struct sockaddr_un *)(ss))->sun_path, 566 s->is_listen ? ",server" : ""); 567 #endif 568 case AF_INET6: 569 left = "["; 570 right = "]"; 571 /* fall through */ 572 case AF_INET: 573 getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost), 574 sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV); 575 getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost), 576 pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV); 577 return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s", 578 qemu_chr_socket_protocol(s), 579 left, shost, right, sserv, 580 s->is_listen ? ",server" : "", 581 left, phost, right, pserv); 582 583 default: 584 return g_strdup_printf("unknown"); 585 } 586 } 587 588 static void update_ioc_handlers(SocketChardev *s) 589 { 590 Chardev *chr = CHARDEV(s); 591 592 if (s->state != TCP_CHARDEV_STATE_CONNECTED) { 593 return; 594 } 595 596 remove_fd_in_watch(chr); 597 chr->gsource = io_add_watch_poll(chr, s->ioc, 598 tcp_chr_read_poll, 599 tcp_chr_read, chr, 600 chr->gcontext); 601 602 remove_hup_source(s); 603 s->hup_source = qio_channel_create_watch(s->ioc, G_IO_HUP); 604 g_source_set_callback(s->hup_source, (GSourceFunc)tcp_chr_hup, 605 chr, NULL); 606 g_source_attach(s->hup_source, chr->gcontext); 607 } 608 609 static void tcp_chr_connect(void *opaque) 610 { 611 Chardev *chr = CHARDEV(opaque); 612 SocketChardev *s = SOCKET_CHARDEV(opaque); 613 614 g_free(chr->filename); 615 chr->filename = qemu_chr_compute_filename(s); 616 617 tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTED); 618 update_ioc_handlers(s); 619 qemu_chr_be_event(chr, CHR_EVENT_OPENED); 620 } 621 622 static void tcp_chr_telnet_destroy(SocketChardev *s) 623 { 624 if (s->telnet_source) { 625 g_source_destroy(s->telnet_source); 626 g_source_unref(s->telnet_source); 627 s->telnet_source = NULL; 628 } 629 } 630 631 static void tcp_chr_update_read_handler(Chardev *chr) 632 { 633 SocketChardev *s = SOCKET_CHARDEV(chr); 634 635 if (s->listener) { 636 /* 637 * It's possible that chardev context is changed in 638 * qemu_chr_be_update_read_handlers(). Reset it for QIO net 639 * listener if there is. 640 */ 641 qio_net_listener_set_client_func_full(s->listener, tcp_chr_accept, 642 chr, NULL, chr->gcontext); 643 } 644 645 if (s->telnet_source) { 646 tcp_chr_telnet_init(CHARDEV(s)); 647 } 648 649 update_ioc_handlers(s); 650 } 651 652 static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc, 653 GIOCondition cond G_GNUC_UNUSED, 654 gpointer user_data) 655 { 656 SocketChardev *s = user_data; 657 Chardev *chr = CHARDEV(s); 658 TCPChardevTelnetInit *init = s->telnet_init; 659 ssize_t ret; 660 661 assert(init); 662 663 ret = qio_channel_write(ioc, init->buf, init->buflen, NULL); 664 if (ret < 0) { 665 if (ret == QIO_CHANNEL_ERR_BLOCK) { 666 ret = 0; 667 } else { 668 tcp_chr_disconnect(chr); 669 goto end; 670 } 671 } 672 init->buflen -= ret; 673 674 if (init->buflen == 0) { 675 tcp_chr_connect(chr); 676 goto end; 677 } 678 679 memmove(init->buf, init->buf + ret, init->buflen); 680 681 return G_SOURCE_CONTINUE; 682 683 end: 684 g_free(s->telnet_init); 685 s->telnet_init = NULL; 686 g_source_unref(s->telnet_source); 687 s->telnet_source = NULL; 688 return G_SOURCE_REMOVE; 689 } 690 691 static void tcp_chr_telnet_init(Chardev *chr) 692 { 693 SocketChardev *s = SOCKET_CHARDEV(chr); 694 TCPChardevTelnetInit *init; 695 size_t n = 0; 696 697 /* Destroy existing task */ 698 tcp_chr_telnet_destroy(s); 699 700 if (s->telnet_init) { 701 /* We are possibly during a handshake already */ 702 goto cont; 703 } 704 705 s->telnet_init = g_new0(TCPChardevTelnetInit, 1); 706 init = s->telnet_init; 707 708 #define IACSET(x, a, b, c) \ 709 do { \ 710 x[n++] = a; \ 711 x[n++] = b; \ 712 x[n++] = c; \ 713 } while (0) 714 715 if (!s->is_tn3270) { 716 init->buflen = 12; 717 /* Prep the telnet negotion to put telnet in binary, 718 * no echo, single char mode */ 719 IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */ 720 IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */ 721 IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */ 722 IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */ 723 } else { 724 init->buflen = 21; 725 /* Prep the TN3270 negotion based on RFC1576 */ 726 IACSET(init->buf, 0xff, 0xfd, 0x19); /* IAC DO EOR */ 727 IACSET(init->buf, 0xff, 0xfb, 0x19); /* IAC WILL EOR */ 728 IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO BINARY */ 729 IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL BINARY */ 730 IACSET(init->buf, 0xff, 0xfd, 0x18); /* IAC DO TERMINAL TYPE */ 731 IACSET(init->buf, 0xff, 0xfa, 0x18); /* IAC SB TERMINAL TYPE */ 732 IACSET(init->buf, 0x01, 0xff, 0xf0); /* SEND IAC SE */ 733 } 734 735 #undef IACSET 736 737 cont: 738 s->telnet_source = qio_channel_add_watch_source(s->ioc, G_IO_OUT, 739 tcp_chr_telnet_init_io, 740 s, NULL, 741 chr->gcontext); 742 } 743 744 745 static void tcp_chr_websock_handshake(QIOTask *task, gpointer user_data) 746 { 747 Chardev *chr = user_data; 748 SocketChardev *s = user_data; 749 750 if (qio_task_propagate_error(task, NULL)) { 751 tcp_chr_disconnect(chr); 752 } else { 753 if (s->do_telnetopt) { 754 tcp_chr_telnet_init(chr); 755 } else { 756 tcp_chr_connect(chr); 757 } 758 } 759 } 760 761 762 static void tcp_chr_websock_init(Chardev *chr) 763 { 764 SocketChardev *s = SOCKET_CHARDEV(chr); 765 QIOChannelWebsock *wioc = NULL; 766 gchar *name; 767 768 wioc = qio_channel_websock_new_server(s->ioc); 769 770 name = g_strdup_printf("chardev-websocket-server-%s", chr->label); 771 qio_channel_set_name(QIO_CHANNEL(wioc), name); 772 g_free(name); 773 object_unref(OBJECT(s->ioc)); 774 s->ioc = QIO_CHANNEL(wioc); 775 776 qio_channel_websock_handshake(wioc, tcp_chr_websock_handshake, chr, NULL); 777 } 778 779 780 static void tcp_chr_tls_handshake(QIOTask *task, 781 gpointer user_data) 782 { 783 Chardev *chr = user_data; 784 SocketChardev *s = user_data; 785 786 if (qio_task_propagate_error(task, NULL)) { 787 tcp_chr_disconnect(chr); 788 } else { 789 if (s->is_websock) { 790 tcp_chr_websock_init(chr); 791 } else if (s->do_telnetopt) { 792 tcp_chr_telnet_init(chr); 793 } else { 794 tcp_chr_connect(chr); 795 } 796 } 797 } 798 799 800 static void tcp_chr_tls_init(Chardev *chr) 801 { 802 SocketChardev *s = SOCKET_CHARDEV(chr); 803 QIOChannelTLS *tioc; 804 Error *err = NULL; 805 gchar *name; 806 807 if (s->is_listen) { 808 tioc = qio_channel_tls_new_server( 809 s->ioc, s->tls_creds, 810 NULL, /* XXX Use an ACL */ 811 &err); 812 } else { 813 tioc = qio_channel_tls_new_client( 814 s->ioc, s->tls_creds, 815 s->addr->u.inet.host, 816 &err); 817 } 818 if (tioc == NULL) { 819 error_free(err); 820 tcp_chr_disconnect(chr); 821 return; 822 } 823 name = g_strdup_printf("chardev-tls-%s-%s", 824 s->is_listen ? "server" : "client", 825 chr->label); 826 qio_channel_set_name(QIO_CHANNEL(tioc), name); 827 g_free(name); 828 object_unref(OBJECT(s->ioc)); 829 s->ioc = QIO_CHANNEL(tioc); 830 831 qio_channel_tls_handshake(tioc, 832 tcp_chr_tls_handshake, 833 chr, 834 NULL, 835 chr->gcontext); 836 } 837 838 839 static void tcp_chr_set_client_ioc_name(Chardev *chr, 840 QIOChannelSocket *sioc) 841 { 842 SocketChardev *s = SOCKET_CHARDEV(chr); 843 char *name; 844 name = g_strdup_printf("chardev-tcp-%s-%s", 845 s->is_listen ? "server" : "client", 846 chr->label); 847 qio_channel_set_name(QIO_CHANNEL(sioc), name); 848 g_free(name); 849 850 } 851 852 static int tcp_chr_new_client(Chardev *chr, QIOChannelSocket *sioc) 853 { 854 SocketChardev *s = SOCKET_CHARDEV(chr); 855 856 if (s->state != TCP_CHARDEV_STATE_CONNECTING) { 857 return -1; 858 } 859 860 s->ioc = QIO_CHANNEL(sioc); 861 object_ref(OBJECT(sioc)); 862 s->sioc = sioc; 863 object_ref(OBJECT(sioc)); 864 865 qio_channel_set_blocking(s->ioc, false, NULL); 866 867 if (s->do_nodelay) { 868 qio_channel_set_delay(s->ioc, false); 869 } 870 if (s->listener) { 871 qio_net_listener_set_client_func_full(s->listener, NULL, NULL, 872 NULL, chr->gcontext); 873 } 874 875 if (s->tls_creds) { 876 tcp_chr_tls_init(chr); 877 } else if (s->is_websock) { 878 tcp_chr_websock_init(chr); 879 } else if (s->do_telnetopt) { 880 tcp_chr_telnet_init(chr); 881 } else { 882 tcp_chr_connect(chr); 883 } 884 885 return 0; 886 } 887 888 889 static int tcp_chr_add_client(Chardev *chr, int fd) 890 { 891 int ret; 892 QIOChannelSocket *sioc; 893 SocketChardev *s = SOCKET_CHARDEV(chr); 894 895 if (s->state != TCP_CHARDEV_STATE_DISCONNECTED) { 896 return -1; 897 } 898 899 sioc = qio_channel_socket_new_fd(fd, NULL); 900 if (!sioc) { 901 return -1; 902 } 903 tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); 904 tcp_chr_set_client_ioc_name(chr, sioc); 905 ret = tcp_chr_new_client(chr, sioc); 906 object_unref(OBJECT(sioc)); 907 return ret; 908 } 909 910 static void tcp_chr_accept(QIONetListener *listener, 911 QIOChannelSocket *cioc, 912 void *opaque) 913 { 914 Chardev *chr = CHARDEV(opaque); 915 SocketChardev *s = SOCKET_CHARDEV(chr); 916 917 tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); 918 tcp_chr_set_client_ioc_name(chr, cioc); 919 tcp_chr_new_client(chr, cioc); 920 } 921 922 923 static int tcp_chr_connect_client_sync(Chardev *chr, Error **errp) 924 { 925 SocketChardev *s = SOCKET_CHARDEV(chr); 926 QIOChannelSocket *sioc = qio_channel_socket_new(); 927 tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); 928 tcp_chr_set_client_ioc_name(chr, sioc); 929 if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) { 930 tcp_chr_change_state(s, TCP_CHARDEV_STATE_DISCONNECTED); 931 object_unref(OBJECT(sioc)); 932 return -1; 933 } 934 tcp_chr_new_client(chr, sioc); 935 object_unref(OBJECT(sioc)); 936 return 0; 937 } 938 939 940 static void tcp_chr_accept_server_sync(Chardev *chr) 941 { 942 SocketChardev *s = SOCKET_CHARDEV(chr); 943 QIOChannelSocket *sioc; 944 info_report("QEMU waiting for connection on: %s", 945 chr->filename); 946 tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); 947 sioc = qio_net_listener_wait_client(s->listener); 948 tcp_chr_set_client_ioc_name(chr, sioc); 949 tcp_chr_new_client(chr, sioc); 950 object_unref(OBJECT(sioc)); 951 } 952 953 954 static int tcp_chr_wait_connected(Chardev *chr, Error **errp) 955 { 956 SocketChardev *s = SOCKET_CHARDEV(chr); 957 const char *opts[] = { "telnet", "tn3270", "websock", "tls-creds" }; 958 bool optset[] = { s->is_telnet, s->is_tn3270, s->is_websock, s->tls_creds }; 959 size_t i; 960 961 QEMU_BUILD_BUG_ON(G_N_ELEMENTS(opts) != G_N_ELEMENTS(optset)); 962 for (i = 0; i < G_N_ELEMENTS(opts); i++) { 963 if (optset[i]) { 964 error_setg(errp, 965 "'%s' option is incompatible with waiting for " 966 "connection completion", opts[i]); 967 return -1; 968 } 969 } 970 971 tcp_chr_reconn_timer_cancel(s); 972 973 /* 974 * We expect states to be as follows: 975 * 976 * - server 977 * - wait -> CONNECTED 978 * - nowait -> DISCONNECTED 979 * - client 980 * - reconnect == 0 -> CONNECTED 981 * - reconnect != 0 -> CONNECTING 982 * 983 */ 984 if (s->state == TCP_CHARDEV_STATE_CONNECTING) { 985 if (!s->connect_task) { 986 error_setg(errp, 987 "Unexpected 'connecting' state without connect task " 988 "while waiting for connection completion"); 989 return -1; 990 } 991 /* 992 * tcp_chr_wait_connected should only ever be run from the 993 * main loop thread associated with chr->gcontext, otherwise 994 * qio_task_wait_thread has a dangerous race condition with 995 * free'ing of the s->connect_task object. 996 * 997 * Acquiring the main context doesn't 100% prove we're in 998 * the main loop thread, but it does at least guarantee 999 * that the main loop won't be executed by another thread 1000 * avoiding the race condition with the task idle callback. 1001 */ 1002 g_main_context_acquire(chr->gcontext); 1003 qio_task_wait_thread(s->connect_task); 1004 g_main_context_release(chr->gcontext); 1005 1006 /* 1007 * The completion callback (qemu_chr_socket_connected) for 1008 * s->connect_task should have set this to NULL by the time 1009 * qio_task_wait_thread has returned. 1010 */ 1011 assert(!s->connect_task); 1012 1013 /* 1014 * NB we are *not* guaranteed to have "s->state == ..CONNECTED" 1015 * at this point as this first connect may be failed, so 1016 * allow the next loop to run regardless. 1017 */ 1018 } 1019 1020 while (s->state != TCP_CHARDEV_STATE_CONNECTED) { 1021 if (s->is_listen) { 1022 tcp_chr_accept_server_sync(chr); 1023 } else { 1024 Error *err = NULL; 1025 if (tcp_chr_connect_client_sync(chr, &err) < 0) { 1026 if (s->reconnect_time) { 1027 error_free(err); 1028 g_usleep(s->reconnect_time * 1000ULL * 1000ULL); 1029 } else { 1030 error_propagate(errp, err); 1031 return -1; 1032 } 1033 } 1034 } 1035 } 1036 1037 return 0; 1038 } 1039 1040 static void char_socket_finalize(Object *obj) 1041 { 1042 Chardev *chr = CHARDEV(obj); 1043 SocketChardev *s = SOCKET_CHARDEV(obj); 1044 1045 tcp_chr_free_connection(chr); 1046 tcp_chr_reconn_timer_cancel(s); 1047 qapi_free_SocketAddress(s->addr); 1048 tcp_chr_telnet_destroy(s); 1049 g_free(s->telnet_init); 1050 if (s->listener) { 1051 qio_net_listener_set_client_func_full(s->listener, NULL, NULL, 1052 NULL, chr->gcontext); 1053 object_unref(OBJECT(s->listener)); 1054 } 1055 if (s->tls_creds) { 1056 object_unref(OBJECT(s->tls_creds)); 1057 } 1058 1059 qemu_chr_be_event(chr, CHR_EVENT_CLOSED); 1060 } 1061 1062 static void qemu_chr_socket_connected(QIOTask *task, void *opaque) 1063 { 1064 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(qio_task_get_source(task)); 1065 Chardev *chr = CHARDEV(opaque); 1066 SocketChardev *s = SOCKET_CHARDEV(chr); 1067 Error *err = NULL; 1068 1069 s->connect_task = NULL; 1070 1071 if (qio_task_propagate_error(task, &err)) { 1072 tcp_chr_change_state(s, TCP_CHARDEV_STATE_DISCONNECTED); 1073 check_report_connect_error(chr, err); 1074 error_free(err); 1075 goto cleanup; 1076 } 1077 1078 s->connect_err_reported = false; 1079 tcp_chr_new_client(chr, sioc); 1080 1081 cleanup: 1082 object_unref(OBJECT(sioc)); 1083 } 1084 1085 1086 static void tcp_chr_connect_client_task(QIOTask *task, 1087 gpointer opaque) 1088 { 1089 QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(qio_task_get_source(task)); 1090 SocketAddress *addr = opaque; 1091 Error *err = NULL; 1092 1093 qio_channel_socket_connect_sync(ioc, addr, &err); 1094 1095 qio_task_set_error(task, err); 1096 } 1097 1098 1099 static void tcp_chr_connect_client_async(Chardev *chr) 1100 { 1101 SocketChardev *s = SOCKET_CHARDEV(chr); 1102 QIOChannelSocket *sioc; 1103 1104 tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); 1105 sioc = qio_channel_socket_new(); 1106 tcp_chr_set_client_ioc_name(chr, sioc); 1107 /* 1108 * Normally code would use the qio_channel_socket_connect_async 1109 * method which uses a QIOTask + qio_task_set_error internally 1110 * to avoid blocking. The tcp_chr_wait_connected method, however, 1111 * needs a way to synchronize with completion of the background 1112 * connect task which can't be done with the QIOChannelSocket 1113 * async APIs. Thus we must use QIOTask directly to implement 1114 * the non-blocking concept locally. 1115 */ 1116 s->connect_task = qio_task_new(OBJECT(sioc), 1117 qemu_chr_socket_connected, 1118 chr, NULL); 1119 qio_task_run_in_thread(s->connect_task, 1120 tcp_chr_connect_client_task, 1121 s->addr, 1122 NULL, 1123 chr->gcontext); 1124 } 1125 1126 static gboolean socket_reconnect_timeout(gpointer opaque) 1127 { 1128 Chardev *chr = CHARDEV(opaque); 1129 SocketChardev *s = SOCKET_CHARDEV(opaque); 1130 1131 g_source_unref(s->reconnect_timer); 1132 s->reconnect_timer = NULL; 1133 1134 if (chr->be_open) { 1135 return false; 1136 } 1137 1138 tcp_chr_connect_client_async(chr); 1139 1140 return false; 1141 } 1142 1143 1144 static int qmp_chardev_open_socket_server(Chardev *chr, 1145 bool is_telnet, 1146 bool is_waitconnect, 1147 Error **errp) 1148 { 1149 SocketChardev *s = SOCKET_CHARDEV(chr); 1150 char *name; 1151 if (is_telnet) { 1152 s->do_telnetopt = 1; 1153 } 1154 s->listener = qio_net_listener_new(); 1155 1156 name = g_strdup_printf("chardev-tcp-listener-%s", chr->label); 1157 qio_net_listener_set_name(s->listener, name); 1158 g_free(name); 1159 1160 if (qio_net_listener_open_sync(s->listener, s->addr, errp) < 0) { 1161 object_unref(OBJECT(s->listener)); 1162 s->listener = NULL; 1163 return -1; 1164 } 1165 1166 qapi_free_SocketAddress(s->addr); 1167 s->addr = socket_local_address(s->listener->sioc[0]->fd, errp); 1168 update_disconnected_filename(s); 1169 1170 if (is_waitconnect) { 1171 tcp_chr_accept_server_sync(chr); 1172 } else { 1173 qio_net_listener_set_client_func_full(s->listener, 1174 tcp_chr_accept, 1175 chr, NULL, 1176 chr->gcontext); 1177 } 1178 1179 return 0; 1180 } 1181 1182 1183 static int qmp_chardev_open_socket_client(Chardev *chr, 1184 int64_t reconnect, 1185 Error **errp) 1186 { 1187 SocketChardev *s = SOCKET_CHARDEV(chr); 1188 1189 if (reconnect > 0) { 1190 s->reconnect_time = reconnect; 1191 tcp_chr_connect_client_async(chr); 1192 return 0; 1193 } else { 1194 return tcp_chr_connect_client_sync(chr, errp); 1195 } 1196 } 1197 1198 1199 static bool qmp_chardev_validate_socket(ChardevSocket *sock, 1200 SocketAddress *addr, 1201 Error **errp) 1202 { 1203 /* Validate any options which have a dependency on address type */ 1204 switch (addr->type) { 1205 case SOCKET_ADDRESS_TYPE_FD: 1206 if (sock->has_reconnect) { 1207 error_setg(errp, 1208 "'reconnect' option is incompatible with " 1209 "'fd' address type"); 1210 return false; 1211 } 1212 if (sock->has_tls_creds && 1213 !(sock->has_server && sock->server)) { 1214 error_setg(errp, 1215 "'tls_creds' option is incompatible with " 1216 "'fd' address type as client"); 1217 return false; 1218 } 1219 break; 1220 1221 case SOCKET_ADDRESS_TYPE_UNIX: 1222 if (sock->has_tls_creds) { 1223 error_setg(errp, 1224 "'tls_creds' option is incompatible with " 1225 "'unix' address type"); 1226 return false; 1227 } 1228 break; 1229 1230 case SOCKET_ADDRESS_TYPE_INET: 1231 break; 1232 1233 case SOCKET_ADDRESS_TYPE_VSOCK: 1234 if (sock->has_tls_creds) { 1235 error_setg(errp, 1236 "'tls_creds' option is incompatible with " 1237 "'vsock' address type"); 1238 return false; 1239 } 1240 1241 default: 1242 break; 1243 } 1244 1245 /* Validate any options which have a dependancy on client vs server */ 1246 if (!sock->has_server || sock->server) { 1247 if (sock->has_reconnect) { 1248 error_setg(errp, 1249 "'reconnect' option is incompatible with " 1250 "socket in server listen mode"); 1251 return false; 1252 } 1253 } else { 1254 if (sock->has_websocket && sock->websocket) { 1255 error_setg(errp, "%s", "Websocket client is not implemented"); 1256 return false; 1257 } 1258 if (sock->has_wait) { 1259 error_setg(errp, "%s", 1260 "'wait' option is incompatible with " 1261 "socket in client connect mode"); 1262 return false; 1263 } 1264 } 1265 1266 return true; 1267 } 1268 1269 1270 static void qmp_chardev_open_socket(Chardev *chr, 1271 ChardevBackend *backend, 1272 bool *be_opened, 1273 Error **errp) 1274 { 1275 SocketChardev *s = SOCKET_CHARDEV(chr); 1276 ChardevSocket *sock = backend->u.socket.data; 1277 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false; 1278 bool is_listen = sock->has_server ? sock->server : true; 1279 bool is_telnet = sock->has_telnet ? sock->telnet : false; 1280 bool is_tn3270 = sock->has_tn3270 ? sock->tn3270 : false; 1281 bool is_waitconnect = sock->has_wait ? sock->wait : false; 1282 bool is_websock = sock->has_websocket ? sock->websocket : false; 1283 int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0; 1284 SocketAddress *addr; 1285 1286 s->is_listen = is_listen; 1287 s->is_telnet = is_telnet; 1288 s->is_tn3270 = is_tn3270; 1289 s->is_websock = is_websock; 1290 s->do_nodelay = do_nodelay; 1291 if (sock->tls_creds) { 1292 Object *creds; 1293 creds = object_resolve_path_component( 1294 object_get_objects_root(), sock->tls_creds); 1295 if (!creds) { 1296 error_setg(errp, "No TLS credentials with id '%s'", 1297 sock->tls_creds); 1298 return; 1299 } 1300 s->tls_creds = (QCryptoTLSCreds *) 1301 object_dynamic_cast(creds, 1302 TYPE_QCRYPTO_TLS_CREDS); 1303 if (!s->tls_creds) { 1304 error_setg(errp, "Object with id '%s' is not TLS credentials", 1305 sock->tls_creds); 1306 return; 1307 } 1308 object_ref(OBJECT(s->tls_creds)); 1309 if (is_listen) { 1310 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) { 1311 error_setg(errp, "%s", 1312 "Expected TLS credentials for server endpoint"); 1313 return; 1314 } 1315 } else { 1316 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) { 1317 error_setg(errp, "%s", 1318 "Expected TLS credentials for client endpoint"); 1319 return; 1320 } 1321 } 1322 } 1323 1324 s->addr = addr = socket_address_flatten(sock->addr); 1325 1326 if (!qmp_chardev_validate_socket(sock, addr, errp)) { 1327 return; 1328 } 1329 1330 qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_RECONNECTABLE); 1331 /* TODO SOCKET_ADDRESS_FD where fd has AF_UNIX */ 1332 if (addr->type == SOCKET_ADDRESS_TYPE_UNIX) { 1333 qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_FD_PASS); 1334 } 1335 1336 /* be isn't opened until we get a connection */ 1337 *be_opened = false; 1338 1339 update_disconnected_filename(s); 1340 1341 if (s->is_listen) { 1342 if (qmp_chardev_open_socket_server(chr, is_telnet || is_tn3270, 1343 is_waitconnect, errp) < 0) { 1344 return; 1345 } 1346 } else { 1347 if (qmp_chardev_open_socket_client(chr, reconnect, errp) < 0) { 1348 return; 1349 } 1350 } 1351 } 1352 1353 static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend, 1354 Error **errp) 1355 { 1356 const char *path = qemu_opt_get(opts, "path"); 1357 const char *host = qemu_opt_get(opts, "host"); 1358 const char *port = qemu_opt_get(opts, "port"); 1359 const char *fd = qemu_opt_get(opts, "fd"); 1360 SocketAddressLegacy *addr; 1361 ChardevSocket *sock; 1362 1363 if ((!!path + !!fd + !!host) != 1) { 1364 error_setg(errp, 1365 "Exactly one of 'path', 'fd' or 'host' required"); 1366 return; 1367 } 1368 1369 if (host && !port) { 1370 error_setg(errp, "chardev: socket: no port given"); 1371 return; 1372 } 1373 1374 backend->type = CHARDEV_BACKEND_KIND_SOCKET; 1375 sock = backend->u.socket.data = g_new0(ChardevSocket, 1); 1376 qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock)); 1377 1378 sock->has_nodelay = qemu_opt_get(opts, "delay"); 1379 sock->nodelay = !qemu_opt_get_bool(opts, "delay", true); 1380 /* 1381 * We have different default to QMP for 'server', hence 1382 * we can't just check for existence of 'server' 1383 */ 1384 sock->has_server = true; 1385 sock->server = qemu_opt_get_bool(opts, "server", false); 1386 sock->has_telnet = qemu_opt_get(opts, "telnet"); 1387 sock->telnet = qemu_opt_get_bool(opts, "telnet", false); 1388 sock->has_tn3270 = qemu_opt_get(opts, "tn3270"); 1389 sock->tn3270 = qemu_opt_get_bool(opts, "tn3270", false); 1390 sock->has_websocket = qemu_opt_get(opts, "websocket"); 1391 sock->websocket = qemu_opt_get_bool(opts, "websocket", false); 1392 /* 1393 * We have different default to QMP for 'wait' when 'server' 1394 * is set, hence we can't just check for existence of 'wait' 1395 */ 1396 sock->has_wait = qemu_opt_find(opts, "wait") || sock->server; 1397 sock->wait = qemu_opt_get_bool(opts, "wait", true); 1398 sock->has_reconnect = qemu_opt_find(opts, "reconnect"); 1399 sock->reconnect = qemu_opt_get_number(opts, "reconnect", 0); 1400 sock->has_tls_creds = qemu_opt_get(opts, "tls-creds"); 1401 sock->tls_creds = g_strdup(qemu_opt_get(opts, "tls-creds")); 1402 1403 addr = g_new0(SocketAddressLegacy, 1); 1404 if (path) { 1405 UnixSocketAddress *q_unix; 1406 addr->type = SOCKET_ADDRESS_LEGACY_KIND_UNIX; 1407 q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1); 1408 q_unix->path = g_strdup(path); 1409 } else if (host) { 1410 addr->type = SOCKET_ADDRESS_LEGACY_KIND_INET; 1411 addr->u.inet.data = g_new(InetSocketAddress, 1); 1412 *addr->u.inet.data = (InetSocketAddress) { 1413 .host = g_strdup(host), 1414 .port = g_strdup(port), 1415 .has_to = qemu_opt_get(opts, "to"), 1416 .to = qemu_opt_get_number(opts, "to", 0), 1417 .has_ipv4 = qemu_opt_get(opts, "ipv4"), 1418 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0), 1419 .has_ipv6 = qemu_opt_get(opts, "ipv6"), 1420 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0), 1421 }; 1422 } else if (fd) { 1423 addr->type = SOCKET_ADDRESS_LEGACY_KIND_FD; 1424 addr->u.fd.data = g_new(String, 1); 1425 addr->u.fd.data->str = g_strdup(fd); 1426 } else { 1427 g_assert_not_reached(); 1428 } 1429 sock->addr = addr; 1430 } 1431 1432 static void 1433 char_socket_get_addr(Object *obj, Visitor *v, const char *name, 1434 void *opaque, Error **errp) 1435 { 1436 SocketChardev *s = SOCKET_CHARDEV(obj); 1437 1438 visit_type_SocketAddress(v, name, &s->addr, errp); 1439 } 1440 1441 static bool 1442 char_socket_get_connected(Object *obj, Error **errp) 1443 { 1444 SocketChardev *s = SOCKET_CHARDEV(obj); 1445 1446 return s->state == TCP_CHARDEV_STATE_CONNECTED; 1447 } 1448 1449 static void char_socket_class_init(ObjectClass *oc, void *data) 1450 { 1451 ChardevClass *cc = CHARDEV_CLASS(oc); 1452 1453 cc->parse = qemu_chr_parse_socket; 1454 cc->open = qmp_chardev_open_socket; 1455 cc->chr_wait_connected = tcp_chr_wait_connected; 1456 cc->chr_write = tcp_chr_write; 1457 cc->chr_sync_read = tcp_chr_sync_read; 1458 cc->chr_disconnect = tcp_chr_disconnect; 1459 cc->get_msgfds = tcp_get_msgfds; 1460 cc->set_msgfds = tcp_set_msgfds; 1461 cc->chr_add_client = tcp_chr_add_client; 1462 cc->chr_add_watch = tcp_chr_add_watch; 1463 cc->chr_update_read_handler = tcp_chr_update_read_handler; 1464 1465 object_class_property_add(oc, "addr", "SocketAddress", 1466 char_socket_get_addr, NULL, 1467 NULL, NULL, &error_abort); 1468 1469 object_class_property_add_bool(oc, "connected", char_socket_get_connected, 1470 NULL, &error_abort); 1471 } 1472 1473 static const TypeInfo char_socket_type_info = { 1474 .name = TYPE_CHARDEV_SOCKET, 1475 .parent = TYPE_CHARDEV, 1476 .instance_size = sizeof(SocketChardev), 1477 .instance_finalize = char_socket_finalize, 1478 .class_init = char_socket_class_init, 1479 }; 1480 1481 static void register_types(void) 1482 { 1483 type_register_static(&char_socket_type_info); 1484 } 1485 1486 type_init(register_types); 1487