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/module.h" 33 #include "qemu/option.h" 34 #include "qapi/error.h" 35 #include "qapi/clone-visitor.h" 36 #include "qapi/qapi-visit-sockets.h" 37 38 #include "chardev/char-io.h" 39 40 /***********************************************************/ 41 /* TCP Net console */ 42 43 #define TCP_MAX_FDS 16 44 45 typedef struct { 46 char buf[21]; 47 size_t buflen; 48 } TCPChardevTelnetInit; 49 50 typedef enum { 51 TCP_CHARDEV_STATE_DISCONNECTED, 52 TCP_CHARDEV_STATE_CONNECTING, 53 TCP_CHARDEV_STATE_CONNECTED, 54 } TCPChardevState; 55 56 typedef struct { 57 Chardev parent; 58 QIOChannel *ioc; /* Client I/O channel */ 59 QIOChannelSocket *sioc; /* Client master channel */ 60 QIONetListener *listener; 61 GSource *hup_source; 62 QCryptoTLSCreds *tls_creds; 63 char *tls_authz; 64 TCPChardevState state; 65 int max_size; 66 int do_telnetopt; 67 int do_nodelay; 68 int *read_msgfds; 69 size_t read_msgfds_num; 70 int *write_msgfds; 71 size_t write_msgfds_num; 72 73 SocketAddress *addr; 74 bool is_listen; 75 bool is_telnet; 76 bool is_tn3270; 77 GSource *telnet_source; 78 TCPChardevTelnetInit *telnet_init; 79 80 bool is_websock; 81 82 GSource *reconnect_timer; 83 int64_t reconnect_time; 84 bool connect_err_reported; 85 86 QIOTask *connect_task; 87 } SocketChardev; 88 89 #define SOCKET_CHARDEV(obj) \ 90 OBJECT_CHECK(SocketChardev, (obj), TYPE_CHARDEV_SOCKET) 91 92 static gboolean socket_reconnect_timeout(gpointer opaque); 93 static void tcp_chr_telnet_init(Chardev *chr); 94 95 static void tcp_chr_change_state(SocketChardev *s, TCPChardevState state) 96 { 97 switch (state) { 98 case TCP_CHARDEV_STATE_DISCONNECTED: 99 break; 100 case TCP_CHARDEV_STATE_CONNECTING: 101 assert(s->state == TCP_CHARDEV_STATE_DISCONNECTED); 102 break; 103 case TCP_CHARDEV_STATE_CONNECTED: 104 assert(s->state == TCP_CHARDEV_STATE_CONNECTING); 105 break; 106 } 107 s->state = state; 108 } 109 110 static void tcp_chr_reconn_timer_cancel(SocketChardev *s) 111 { 112 if (s->reconnect_timer) { 113 g_source_destroy(s->reconnect_timer); 114 g_source_unref(s->reconnect_timer); 115 s->reconnect_timer = NULL; 116 } 117 } 118 119 static void qemu_chr_socket_restart_timer(Chardev *chr) 120 { 121 SocketChardev *s = SOCKET_CHARDEV(chr); 122 char *name; 123 124 assert(s->state == TCP_CHARDEV_STATE_DISCONNECTED); 125 assert(!s->reconnect_timer); 126 name = g_strdup_printf("chardev-socket-reconnect-%s", chr->label); 127 s->reconnect_timer = qemu_chr_timeout_add_ms(chr, 128 s->reconnect_time * 1000, 129 socket_reconnect_timeout, 130 chr); 131 g_source_set_name(s->reconnect_timer, name); 132 g_free(name); 133 } 134 135 static void check_report_connect_error(Chardev *chr, 136 Error *err) 137 { 138 SocketChardev *s = SOCKET_CHARDEV(chr); 139 140 if (!s->connect_err_reported) { 141 error_report("Unable to connect character device %s: %s", 142 chr->label, error_get_pretty(err)); 143 s->connect_err_reported = true; 144 } 145 qemu_chr_socket_restart_timer(chr); 146 } 147 148 static void tcp_chr_accept(QIONetListener *listener, 149 QIOChannelSocket *cioc, 150 void *opaque); 151 152 static int tcp_chr_read_poll(void *opaque); 153 static void tcp_chr_disconnect(Chardev *chr); 154 155 /* Called with chr_write_lock held. */ 156 static int tcp_chr_write(Chardev *chr, const uint8_t *buf, int len) 157 { 158 SocketChardev *s = SOCKET_CHARDEV(chr); 159 160 if (s->state == TCP_CHARDEV_STATE_CONNECTED) { 161 int ret = io_channel_send_full(s->ioc, buf, len, 162 s->write_msgfds, 163 s->write_msgfds_num); 164 165 /* free the written msgfds in any cases 166 * other than ret < 0 && errno == EAGAIN 167 */ 168 if (!(ret < 0 && EAGAIN == errno) 169 && s->write_msgfds_num) { 170 g_free(s->write_msgfds); 171 s->write_msgfds = 0; 172 s->write_msgfds_num = 0; 173 } 174 175 if (ret < 0 && errno != EAGAIN) { 176 if (tcp_chr_read_poll(chr) <= 0) { 177 tcp_chr_disconnect(chr); 178 return len; 179 } /* else let the read handler finish it properly */ 180 } 181 182 return ret; 183 } else { 184 /* XXX: indicate an error ? */ 185 return len; 186 } 187 } 188 189 static int tcp_chr_read_poll(void *opaque) 190 { 191 Chardev *chr = CHARDEV(opaque); 192 SocketChardev *s = SOCKET_CHARDEV(opaque); 193 if (s->state != TCP_CHARDEV_STATE_CONNECTED) { 194 return 0; 195 } 196 s->max_size = qemu_chr_be_can_write(chr); 197 return s->max_size; 198 } 199 200 static void tcp_chr_process_IAC_bytes(Chardev *chr, 201 SocketChardev *s, 202 uint8_t *buf, int *size) 203 { 204 /* Handle any telnet or tn3270 client's basic IAC options. 205 * For telnet options, it satisfies char by char mode with no echo. 206 * For tn3270 options, it satisfies binary mode with EOR. 207 * All IAC options will be removed from the buf and the do_opt 208 * pointer will be used to track the state of the width of the 209 * IAC information. 210 * 211 * RFC854: "All TELNET commands consist of at least a two byte sequence. 212 * The commands dealing with option negotiation are three byte sequences, 213 * the third byte being the code for the option referenced." 214 * "IAC BREAK", "IAC IP", "IAC NOP" and the double IAC are two bytes. 215 * "IAC SB", "IAC SE" and "IAC EOR" are saved to split up data boundary 216 * for tn3270. 217 * NOP, Break and Interrupt Process(IP) might be encountered during a TN3270 218 * session, and NOP and IP need to be done later. 219 */ 220 221 int i; 222 int j = 0; 223 224 for (i = 0; i < *size; i++) { 225 if (s->do_telnetopt > 1) { 226 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) { 227 /* Double IAC means send an IAC */ 228 if (j != i) { 229 buf[j] = buf[i]; 230 } 231 j++; 232 s->do_telnetopt = 1; 233 } else { 234 if ((unsigned char)buf[i] == IAC_BREAK 235 && s->do_telnetopt == 2) { 236 /* Handle IAC break commands by sending a serial break */ 237 qemu_chr_be_event(chr, CHR_EVENT_BREAK); 238 s->do_telnetopt++; 239 } else if (s->is_tn3270 && ((unsigned char)buf[i] == IAC_EOR 240 || (unsigned char)buf[i] == IAC_SB 241 || (unsigned char)buf[i] == IAC_SE) 242 && s->do_telnetopt == 2) { 243 buf[j++] = IAC; 244 buf[j++] = buf[i]; 245 s->do_telnetopt++; 246 } else if (s->is_tn3270 && ((unsigned char)buf[i] == IAC_IP 247 || (unsigned char)buf[i] == IAC_NOP) 248 && s->do_telnetopt == 2) { 249 /* TODO: IP and NOP need to be implemented later. */ 250 s->do_telnetopt++; 251 } 252 s->do_telnetopt++; 253 } 254 if (s->do_telnetopt >= 4) { 255 s->do_telnetopt = 1; 256 } 257 } else { 258 if ((unsigned char)buf[i] == IAC) { 259 s->do_telnetopt = 2; 260 } else { 261 if (j != i) { 262 buf[j] = buf[i]; 263 } 264 j++; 265 } 266 } 267 } 268 *size = j; 269 } 270 271 static int tcp_get_msgfds(Chardev *chr, int *fds, int num) 272 { 273 SocketChardev *s = SOCKET_CHARDEV(chr); 274 275 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num; 276 277 assert(num <= TCP_MAX_FDS); 278 279 if (to_copy) { 280 int i; 281 282 memcpy(fds, s->read_msgfds, to_copy * sizeof(int)); 283 284 /* Close unused fds */ 285 for (i = to_copy; i < s->read_msgfds_num; i++) { 286 close(s->read_msgfds[i]); 287 } 288 289 g_free(s->read_msgfds); 290 s->read_msgfds = 0; 291 s->read_msgfds_num = 0; 292 } 293 294 return to_copy; 295 } 296 297 static int tcp_set_msgfds(Chardev *chr, int *fds, int num) 298 { 299 SocketChardev *s = SOCKET_CHARDEV(chr); 300 301 /* clear old pending fd array */ 302 g_free(s->write_msgfds); 303 s->write_msgfds = NULL; 304 s->write_msgfds_num = 0; 305 306 if ((s->state != TCP_CHARDEV_STATE_CONNECTED) || 307 !qio_channel_has_feature(s->ioc, 308 QIO_CHANNEL_FEATURE_FD_PASS)) { 309 return -1; 310 } 311 312 if (num) { 313 s->write_msgfds = g_new(int, num); 314 memcpy(s->write_msgfds, fds, num * sizeof(int)); 315 } 316 317 s->write_msgfds_num = num; 318 319 return 0; 320 } 321 322 static ssize_t tcp_chr_recv(Chardev *chr, char *buf, size_t len) 323 { 324 SocketChardev *s = SOCKET_CHARDEV(chr); 325 struct iovec iov = { .iov_base = buf, .iov_len = len }; 326 int ret; 327 size_t i; 328 int *msgfds = NULL; 329 size_t msgfds_num = 0; 330 331 if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) { 332 ret = qio_channel_readv_full(s->ioc, &iov, 1, 333 &msgfds, &msgfds_num, 334 NULL); 335 } else { 336 ret = qio_channel_readv_full(s->ioc, &iov, 1, 337 NULL, NULL, 338 NULL); 339 } 340 341 if (ret == QIO_CHANNEL_ERR_BLOCK) { 342 errno = EAGAIN; 343 ret = -1; 344 } else if (ret == -1) { 345 errno = EIO; 346 } 347 348 if (msgfds_num) { 349 /* close and clean read_msgfds */ 350 for (i = 0; i < s->read_msgfds_num; i++) { 351 close(s->read_msgfds[i]); 352 } 353 354 if (s->read_msgfds_num) { 355 g_free(s->read_msgfds); 356 } 357 358 s->read_msgfds = msgfds; 359 s->read_msgfds_num = msgfds_num; 360 } 361 362 for (i = 0; i < s->read_msgfds_num; i++) { 363 int fd = s->read_msgfds[i]; 364 if (fd < 0) { 365 continue; 366 } 367 368 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */ 369 qemu_set_block(fd); 370 371 #ifndef MSG_CMSG_CLOEXEC 372 qemu_set_cloexec(fd); 373 #endif 374 } 375 376 return ret; 377 } 378 379 static GSource *tcp_chr_add_watch(Chardev *chr, GIOCondition cond) 380 { 381 SocketChardev *s = SOCKET_CHARDEV(chr); 382 return qio_channel_create_watch(s->ioc, cond); 383 } 384 385 static void remove_hup_source(SocketChardev *s) 386 { 387 if (s->hup_source != NULL) { 388 g_source_destroy(s->hup_source); 389 g_source_unref(s->hup_source); 390 s->hup_source = NULL; 391 } 392 } 393 394 static void tcp_chr_free_connection(Chardev *chr) 395 { 396 SocketChardev *s = SOCKET_CHARDEV(chr); 397 int i; 398 399 if (s->read_msgfds_num) { 400 for (i = 0; i < s->read_msgfds_num; i++) { 401 close(s->read_msgfds[i]); 402 } 403 g_free(s->read_msgfds); 404 s->read_msgfds = NULL; 405 s->read_msgfds_num = 0; 406 } 407 408 remove_hup_source(s); 409 410 tcp_set_msgfds(chr, NULL, 0); 411 remove_fd_in_watch(chr); 412 object_unref(OBJECT(s->sioc)); 413 s->sioc = NULL; 414 object_unref(OBJECT(s->ioc)); 415 s->ioc = NULL; 416 g_free(chr->filename); 417 chr->filename = NULL; 418 tcp_chr_change_state(s, TCP_CHARDEV_STATE_DISCONNECTED); 419 } 420 421 static const char *qemu_chr_socket_protocol(SocketChardev *s) 422 { 423 if (s->is_telnet) { 424 return "telnet"; 425 } 426 return s->is_websock ? "websocket" : "tcp"; 427 } 428 429 static char *qemu_chr_socket_address(SocketChardev *s, const char *prefix) 430 { 431 switch (s->addr->type) { 432 case SOCKET_ADDRESS_TYPE_INET: 433 return g_strdup_printf("%s%s:%s:%s%s", prefix, 434 qemu_chr_socket_protocol(s), 435 s->addr->u.inet.host, 436 s->addr->u.inet.port, 437 s->is_listen ? ",server" : ""); 438 break; 439 case SOCKET_ADDRESS_TYPE_UNIX: 440 return g_strdup_printf("%sunix:%s%s", prefix, 441 s->addr->u.q_unix.path, 442 s->is_listen ? ",server" : ""); 443 break; 444 case SOCKET_ADDRESS_TYPE_FD: 445 return g_strdup_printf("%sfd:%s%s", prefix, s->addr->u.fd.str, 446 s->is_listen ? ",server" : ""); 447 break; 448 case SOCKET_ADDRESS_TYPE_VSOCK: 449 return g_strdup_printf("%svsock:%s:%s", prefix, 450 s->addr->u.vsock.cid, 451 s->addr->u.vsock.port); 452 default: 453 abort(); 454 } 455 } 456 457 static void update_disconnected_filename(SocketChardev *s) 458 { 459 Chardev *chr = CHARDEV(s); 460 461 g_free(chr->filename); 462 if (s->addr) { 463 chr->filename = qemu_chr_socket_address(s, "disconnected:"); 464 } else { 465 chr->filename = g_strdup("disconnected:socket"); 466 } 467 } 468 469 /* NB may be called even if tcp_chr_connect has not been 470 * reached, due to TLS or telnet initialization failure, 471 * so can *not* assume s->state == TCP_CHARDEV_STATE_CONNECTED 472 */ 473 static void tcp_chr_disconnect(Chardev *chr) 474 { 475 SocketChardev *s = SOCKET_CHARDEV(chr); 476 bool emit_close = s->state == TCP_CHARDEV_STATE_CONNECTED; 477 478 tcp_chr_free_connection(chr); 479 480 if (s->listener) { 481 qio_net_listener_set_client_func_full(s->listener, tcp_chr_accept, 482 chr, NULL, chr->gcontext); 483 } 484 update_disconnected_filename(s); 485 if (emit_close) { 486 qemu_chr_be_event(chr, CHR_EVENT_CLOSED); 487 } 488 if (s->reconnect_time) { 489 qemu_chr_socket_restart_timer(chr); 490 } 491 } 492 493 static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) 494 { 495 Chardev *chr = CHARDEV(opaque); 496 SocketChardev *s = SOCKET_CHARDEV(opaque); 497 uint8_t buf[CHR_READ_BUF_LEN]; 498 int len, size; 499 500 if ((s->state != TCP_CHARDEV_STATE_CONNECTED) || 501 s->max_size <= 0) { 502 return TRUE; 503 } 504 len = sizeof(buf); 505 if (len > s->max_size) { 506 len = s->max_size; 507 } 508 size = tcp_chr_recv(chr, (void *)buf, len); 509 if (size == 0 || (size == -1 && errno != EAGAIN)) { 510 /* connection closed */ 511 tcp_chr_disconnect(chr); 512 } else if (size > 0) { 513 if (s->do_telnetopt) { 514 tcp_chr_process_IAC_bytes(chr, s, buf, &size); 515 } 516 if (size > 0) { 517 qemu_chr_be_write(chr, buf, size); 518 } 519 } 520 521 return TRUE; 522 } 523 524 static gboolean tcp_chr_hup(QIOChannel *channel, 525 GIOCondition cond, 526 void *opaque) 527 { 528 Chardev *chr = CHARDEV(opaque); 529 tcp_chr_disconnect(chr); 530 return G_SOURCE_REMOVE; 531 } 532 533 static int tcp_chr_sync_read(Chardev *chr, const uint8_t *buf, int len) 534 { 535 SocketChardev *s = SOCKET_CHARDEV(chr); 536 int size; 537 538 if (s->state != TCP_CHARDEV_STATE_CONNECTED) { 539 return 0; 540 } 541 542 qio_channel_set_blocking(s->ioc, true, NULL); 543 size = tcp_chr_recv(chr, (void *) buf, len); 544 qio_channel_set_blocking(s->ioc, false, NULL); 545 if (size == 0) { 546 /* connection closed */ 547 tcp_chr_disconnect(chr); 548 } 549 550 return size; 551 } 552 553 static char *qemu_chr_compute_filename(SocketChardev *s) 554 { 555 struct sockaddr_storage *ss = &s->sioc->localAddr; 556 struct sockaddr_storage *ps = &s->sioc->remoteAddr; 557 socklen_t ss_len = s->sioc->localAddrLen; 558 socklen_t ps_len = s->sioc->remoteAddrLen; 559 char shost[NI_MAXHOST], sserv[NI_MAXSERV]; 560 char phost[NI_MAXHOST], pserv[NI_MAXSERV]; 561 const char *left = "", *right = ""; 562 563 switch (ss->ss_family) { 564 #ifndef _WIN32 565 case AF_UNIX: 566 return g_strdup_printf("unix:%s%s", 567 ((struct sockaddr_un *)(ss))->sun_path, 568 s->is_listen ? ",server" : ""); 569 #endif 570 case AF_INET6: 571 left = "["; 572 right = "]"; 573 /* fall through */ 574 case AF_INET: 575 getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost), 576 sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV); 577 getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost), 578 pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV); 579 return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s", 580 qemu_chr_socket_protocol(s), 581 left, shost, right, sserv, 582 s->is_listen ? ",server" : "", 583 left, phost, right, pserv); 584 585 default: 586 return g_strdup_printf("unknown"); 587 } 588 } 589 590 static void update_ioc_handlers(SocketChardev *s) 591 { 592 Chardev *chr = CHARDEV(s); 593 594 if (s->state != TCP_CHARDEV_STATE_CONNECTED) { 595 return; 596 } 597 598 remove_fd_in_watch(chr); 599 chr->gsource = io_add_watch_poll(chr, s->ioc, 600 tcp_chr_read_poll, 601 tcp_chr_read, chr, 602 chr->gcontext); 603 604 remove_hup_source(s); 605 s->hup_source = qio_channel_create_watch(s->ioc, G_IO_HUP); 606 g_source_set_callback(s->hup_source, (GSourceFunc)tcp_chr_hup, 607 chr, NULL); 608 g_source_attach(s->hup_source, chr->gcontext); 609 } 610 611 static void tcp_chr_connect(void *opaque) 612 { 613 Chardev *chr = CHARDEV(opaque); 614 SocketChardev *s = SOCKET_CHARDEV(opaque); 615 616 g_free(chr->filename); 617 chr->filename = qemu_chr_compute_filename(s); 618 619 tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTED); 620 update_ioc_handlers(s); 621 qemu_chr_be_event(chr, CHR_EVENT_OPENED); 622 } 623 624 static void tcp_chr_telnet_destroy(SocketChardev *s) 625 { 626 if (s->telnet_source) { 627 g_source_destroy(s->telnet_source); 628 g_source_unref(s->telnet_source); 629 s->telnet_source = NULL; 630 } 631 } 632 633 static void tcp_chr_update_read_handler(Chardev *chr) 634 { 635 SocketChardev *s = SOCKET_CHARDEV(chr); 636 637 if (s->listener && s->state == TCP_CHARDEV_STATE_DISCONNECTED) { 638 /* 639 * It's possible that chardev context is changed in 640 * qemu_chr_be_update_read_handlers(). Reset it for QIO net 641 * listener if there is. 642 */ 643 qio_net_listener_set_client_func_full(s->listener, tcp_chr_accept, 644 chr, NULL, chr->gcontext); 645 } 646 647 if (s->telnet_source) { 648 tcp_chr_telnet_init(CHARDEV(s)); 649 } 650 651 update_ioc_handlers(s); 652 } 653 654 static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc, 655 GIOCondition cond G_GNUC_UNUSED, 656 gpointer user_data) 657 { 658 SocketChardev *s = user_data; 659 Chardev *chr = CHARDEV(s); 660 TCPChardevTelnetInit *init = s->telnet_init; 661 ssize_t ret; 662 663 assert(init); 664 665 ret = qio_channel_write(ioc, init->buf, init->buflen, NULL); 666 if (ret < 0) { 667 if (ret == QIO_CHANNEL_ERR_BLOCK) { 668 ret = 0; 669 } else { 670 tcp_chr_disconnect(chr); 671 goto end; 672 } 673 } 674 init->buflen -= ret; 675 676 if (init->buflen == 0) { 677 tcp_chr_connect(chr); 678 goto end; 679 } 680 681 memmove(init->buf, init->buf + ret, init->buflen); 682 683 return G_SOURCE_CONTINUE; 684 685 end: 686 g_free(s->telnet_init); 687 s->telnet_init = NULL; 688 g_source_unref(s->telnet_source); 689 s->telnet_source = NULL; 690 return G_SOURCE_REMOVE; 691 } 692 693 static void tcp_chr_telnet_init(Chardev *chr) 694 { 695 SocketChardev *s = SOCKET_CHARDEV(chr); 696 TCPChardevTelnetInit *init; 697 size_t n = 0; 698 699 /* Destroy existing task */ 700 tcp_chr_telnet_destroy(s); 701 702 if (s->telnet_init) { 703 /* We are possibly during a handshake already */ 704 goto cont; 705 } 706 707 s->telnet_init = g_new0(TCPChardevTelnetInit, 1); 708 init = s->telnet_init; 709 710 #define IACSET(x, a, b, c) \ 711 do { \ 712 x[n++] = a; \ 713 x[n++] = b; \ 714 x[n++] = c; \ 715 } while (0) 716 717 if (!s->is_tn3270) { 718 init->buflen = 12; 719 /* Prep the telnet negotion to put telnet in binary, 720 * no echo, single char mode */ 721 IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */ 722 IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */ 723 IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */ 724 IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */ 725 } else { 726 init->buflen = 21; 727 /* Prep the TN3270 negotion based on RFC1576 */ 728 IACSET(init->buf, 0xff, 0xfd, 0x19); /* IAC DO EOR */ 729 IACSET(init->buf, 0xff, 0xfb, 0x19); /* IAC WILL EOR */ 730 IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO BINARY */ 731 IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL BINARY */ 732 IACSET(init->buf, 0xff, 0xfd, 0x18); /* IAC DO TERMINAL TYPE */ 733 IACSET(init->buf, 0xff, 0xfa, 0x18); /* IAC SB TERMINAL TYPE */ 734 IACSET(init->buf, 0x01, 0xff, 0xf0); /* SEND IAC SE */ 735 } 736 737 #undef IACSET 738 739 cont: 740 s->telnet_source = qio_channel_add_watch_source(s->ioc, G_IO_OUT, 741 tcp_chr_telnet_init_io, 742 s, NULL, 743 chr->gcontext); 744 } 745 746 747 static void tcp_chr_websock_handshake(QIOTask *task, gpointer user_data) 748 { 749 Chardev *chr = user_data; 750 SocketChardev *s = user_data; 751 752 if (qio_task_propagate_error(task, NULL)) { 753 tcp_chr_disconnect(chr); 754 } else { 755 if (s->do_telnetopt) { 756 tcp_chr_telnet_init(chr); 757 } else { 758 tcp_chr_connect(chr); 759 } 760 } 761 } 762 763 764 static void tcp_chr_websock_init(Chardev *chr) 765 { 766 SocketChardev *s = SOCKET_CHARDEV(chr); 767 QIOChannelWebsock *wioc = NULL; 768 gchar *name; 769 770 wioc = qio_channel_websock_new_server(s->ioc); 771 772 name = g_strdup_printf("chardev-websocket-server-%s", chr->label); 773 qio_channel_set_name(QIO_CHANNEL(wioc), name); 774 g_free(name); 775 object_unref(OBJECT(s->ioc)); 776 s->ioc = QIO_CHANNEL(wioc); 777 778 qio_channel_websock_handshake(wioc, tcp_chr_websock_handshake, chr, NULL); 779 } 780 781 782 static void tcp_chr_tls_handshake(QIOTask *task, 783 gpointer user_data) 784 { 785 Chardev *chr = user_data; 786 SocketChardev *s = user_data; 787 788 if (qio_task_propagate_error(task, NULL)) { 789 tcp_chr_disconnect(chr); 790 } else { 791 if (s->is_websock) { 792 tcp_chr_websock_init(chr); 793 } else if (s->do_telnetopt) { 794 tcp_chr_telnet_init(chr); 795 } else { 796 tcp_chr_connect(chr); 797 } 798 } 799 } 800 801 802 static void tcp_chr_tls_init(Chardev *chr) 803 { 804 SocketChardev *s = SOCKET_CHARDEV(chr); 805 QIOChannelTLS *tioc; 806 Error *err = NULL; 807 gchar *name; 808 809 if (s->is_listen) { 810 tioc = qio_channel_tls_new_server( 811 s->ioc, s->tls_creds, 812 s->tls_authz, 813 &err); 814 } else { 815 tioc = qio_channel_tls_new_client( 816 s->ioc, s->tls_creds, 817 s->addr->u.inet.host, 818 &err); 819 } 820 if (tioc == NULL) { 821 error_free(err); 822 tcp_chr_disconnect(chr); 823 return; 824 } 825 name = g_strdup_printf("chardev-tls-%s-%s", 826 s->is_listen ? "server" : "client", 827 chr->label); 828 qio_channel_set_name(QIO_CHANNEL(tioc), name); 829 g_free(name); 830 object_unref(OBJECT(s->ioc)); 831 s->ioc = QIO_CHANNEL(tioc); 832 833 qio_channel_tls_handshake(tioc, 834 tcp_chr_tls_handshake, 835 chr, 836 NULL, 837 chr->gcontext); 838 } 839 840 841 static void tcp_chr_set_client_ioc_name(Chardev *chr, 842 QIOChannelSocket *sioc) 843 { 844 SocketChardev *s = SOCKET_CHARDEV(chr); 845 char *name; 846 name = g_strdup_printf("chardev-tcp-%s-%s", 847 s->is_listen ? "server" : "client", 848 chr->label); 849 qio_channel_set_name(QIO_CHANNEL(sioc), name); 850 g_free(name); 851 852 } 853 854 static int tcp_chr_new_client(Chardev *chr, QIOChannelSocket *sioc) 855 { 856 SocketChardev *s = SOCKET_CHARDEV(chr); 857 858 if (s->state != TCP_CHARDEV_STATE_CONNECTING) { 859 return -1; 860 } 861 862 s->ioc = QIO_CHANNEL(sioc); 863 object_ref(OBJECT(sioc)); 864 s->sioc = sioc; 865 object_ref(OBJECT(sioc)); 866 867 qio_channel_set_blocking(s->ioc, false, NULL); 868 869 if (s->do_nodelay) { 870 qio_channel_set_delay(s->ioc, false); 871 } 872 if (s->listener) { 873 qio_net_listener_set_client_func_full(s->listener, NULL, NULL, 874 NULL, chr->gcontext); 875 } 876 877 if (s->tls_creds) { 878 tcp_chr_tls_init(chr); 879 } else if (s->is_websock) { 880 tcp_chr_websock_init(chr); 881 } else if (s->do_telnetopt) { 882 tcp_chr_telnet_init(chr); 883 } else { 884 tcp_chr_connect(chr); 885 } 886 887 return 0; 888 } 889 890 891 static int tcp_chr_add_client(Chardev *chr, int fd) 892 { 893 int ret; 894 QIOChannelSocket *sioc; 895 SocketChardev *s = SOCKET_CHARDEV(chr); 896 897 if (s->state != TCP_CHARDEV_STATE_DISCONNECTED) { 898 return -1; 899 } 900 901 sioc = qio_channel_socket_new_fd(fd, NULL); 902 if (!sioc) { 903 return -1; 904 } 905 tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); 906 tcp_chr_set_client_ioc_name(chr, sioc); 907 ret = tcp_chr_new_client(chr, sioc); 908 object_unref(OBJECT(sioc)); 909 return ret; 910 } 911 912 static void tcp_chr_accept(QIONetListener *listener, 913 QIOChannelSocket *cioc, 914 void *opaque) 915 { 916 Chardev *chr = CHARDEV(opaque); 917 SocketChardev *s = SOCKET_CHARDEV(chr); 918 919 tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); 920 tcp_chr_set_client_ioc_name(chr, cioc); 921 tcp_chr_new_client(chr, cioc); 922 } 923 924 925 static int tcp_chr_connect_client_sync(Chardev *chr, Error **errp) 926 { 927 SocketChardev *s = SOCKET_CHARDEV(chr); 928 QIOChannelSocket *sioc = qio_channel_socket_new(); 929 tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); 930 tcp_chr_set_client_ioc_name(chr, sioc); 931 if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) { 932 tcp_chr_change_state(s, TCP_CHARDEV_STATE_DISCONNECTED); 933 object_unref(OBJECT(sioc)); 934 return -1; 935 } 936 tcp_chr_new_client(chr, sioc); 937 object_unref(OBJECT(sioc)); 938 return 0; 939 } 940 941 942 static void tcp_chr_accept_server_sync(Chardev *chr) 943 { 944 SocketChardev *s = SOCKET_CHARDEV(chr); 945 QIOChannelSocket *sioc; 946 info_report("QEMU waiting for connection on: %s", 947 chr->filename); 948 tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); 949 sioc = qio_net_listener_wait_client(s->listener); 950 tcp_chr_set_client_ioc_name(chr, sioc); 951 tcp_chr_new_client(chr, sioc); 952 object_unref(OBJECT(sioc)); 953 } 954 955 956 static int tcp_chr_wait_connected(Chardev *chr, Error **errp) 957 { 958 SocketChardev *s = SOCKET_CHARDEV(chr); 959 const char *opts[] = { "telnet", "tn3270", "websock", "tls-creds" }; 960 bool optset[] = { s->is_telnet, s->is_tn3270, s->is_websock, s->tls_creds }; 961 size_t i; 962 963 QEMU_BUILD_BUG_ON(G_N_ELEMENTS(opts) != G_N_ELEMENTS(optset)); 964 for (i = 0; i < G_N_ELEMENTS(opts); i++) { 965 if (optset[i]) { 966 error_setg(errp, 967 "'%s' option is incompatible with waiting for " 968 "connection completion", opts[i]); 969 return -1; 970 } 971 } 972 973 tcp_chr_reconn_timer_cancel(s); 974 975 /* 976 * We expect states to be as follows: 977 * 978 * - server 979 * - wait -> CONNECTED 980 * - nowait -> DISCONNECTED 981 * - client 982 * - reconnect == 0 -> CONNECTED 983 * - reconnect != 0 -> CONNECTING 984 * 985 */ 986 if (s->state == TCP_CHARDEV_STATE_CONNECTING) { 987 if (!s->connect_task) { 988 error_setg(errp, 989 "Unexpected 'connecting' state without connect task " 990 "while waiting for connection completion"); 991 return -1; 992 } 993 /* 994 * tcp_chr_wait_connected should only ever be run from the 995 * main loop thread associated with chr->gcontext, otherwise 996 * qio_task_wait_thread has a dangerous race condition with 997 * free'ing of the s->connect_task object. 998 * 999 * Acquiring the main context doesn't 100% prove we're in 1000 * the main loop thread, but it does at least guarantee 1001 * that the main loop won't be executed by another thread 1002 * avoiding the race condition with the task idle callback. 1003 */ 1004 g_main_context_acquire(chr->gcontext); 1005 qio_task_wait_thread(s->connect_task); 1006 g_main_context_release(chr->gcontext); 1007 1008 /* 1009 * The completion callback (qemu_chr_socket_connected) for 1010 * s->connect_task should have set this to NULL by the time 1011 * qio_task_wait_thread has returned. 1012 */ 1013 assert(!s->connect_task); 1014 1015 /* 1016 * NB we are *not* guaranteed to have "s->state == ..CONNECTED" 1017 * at this point as this first connect may be failed, so 1018 * allow the next loop to run regardless. 1019 */ 1020 } 1021 1022 while (s->state != TCP_CHARDEV_STATE_CONNECTED) { 1023 if (s->is_listen) { 1024 tcp_chr_accept_server_sync(chr); 1025 } else { 1026 Error *err = NULL; 1027 if (tcp_chr_connect_client_sync(chr, &err) < 0) { 1028 if (s->reconnect_time) { 1029 error_free(err); 1030 g_usleep(s->reconnect_time * 1000ULL * 1000ULL); 1031 } else { 1032 error_propagate(errp, err); 1033 return -1; 1034 } 1035 } 1036 } 1037 } 1038 1039 return 0; 1040 } 1041 1042 static void char_socket_finalize(Object *obj) 1043 { 1044 Chardev *chr = CHARDEV(obj); 1045 SocketChardev *s = SOCKET_CHARDEV(obj); 1046 1047 tcp_chr_free_connection(chr); 1048 tcp_chr_reconn_timer_cancel(s); 1049 qapi_free_SocketAddress(s->addr); 1050 tcp_chr_telnet_destroy(s); 1051 g_free(s->telnet_init); 1052 if (s->listener) { 1053 qio_net_listener_set_client_func_full(s->listener, NULL, NULL, 1054 NULL, chr->gcontext); 1055 object_unref(OBJECT(s->listener)); 1056 } 1057 if (s->tls_creds) { 1058 object_unref(OBJECT(s->tls_creds)); 1059 } 1060 g_free(s->tls_authz); 1061 1062 qemu_chr_be_event(chr, CHR_EVENT_CLOSED); 1063 } 1064 1065 static void qemu_chr_socket_connected(QIOTask *task, void *opaque) 1066 { 1067 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(qio_task_get_source(task)); 1068 Chardev *chr = CHARDEV(opaque); 1069 SocketChardev *s = SOCKET_CHARDEV(chr); 1070 Error *err = NULL; 1071 1072 s->connect_task = NULL; 1073 1074 if (qio_task_propagate_error(task, &err)) { 1075 tcp_chr_change_state(s, TCP_CHARDEV_STATE_DISCONNECTED); 1076 check_report_connect_error(chr, err); 1077 error_free(err); 1078 goto cleanup; 1079 } 1080 1081 s->connect_err_reported = false; 1082 tcp_chr_new_client(chr, sioc); 1083 1084 cleanup: 1085 object_unref(OBJECT(sioc)); 1086 } 1087 1088 1089 static void tcp_chr_connect_client_task(QIOTask *task, 1090 gpointer opaque) 1091 { 1092 QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(qio_task_get_source(task)); 1093 SocketAddress *addr = opaque; 1094 Error *err = NULL; 1095 1096 qio_channel_socket_connect_sync(ioc, addr, &err); 1097 1098 qio_task_set_error(task, err); 1099 } 1100 1101 1102 static void tcp_chr_connect_client_async(Chardev *chr) 1103 { 1104 SocketChardev *s = SOCKET_CHARDEV(chr); 1105 QIOChannelSocket *sioc; 1106 1107 tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); 1108 sioc = qio_channel_socket_new(); 1109 tcp_chr_set_client_ioc_name(chr, sioc); 1110 /* 1111 * Normally code would use the qio_channel_socket_connect_async 1112 * method which uses a QIOTask + qio_task_set_error internally 1113 * to avoid blocking. The tcp_chr_wait_connected method, however, 1114 * needs a way to synchronize with completion of the background 1115 * connect task which can't be done with the QIOChannelSocket 1116 * async APIs. Thus we must use QIOTask directly to implement 1117 * the non-blocking concept locally. 1118 */ 1119 s->connect_task = qio_task_new(OBJECT(sioc), 1120 qemu_chr_socket_connected, 1121 chr, NULL); 1122 qio_task_run_in_thread(s->connect_task, 1123 tcp_chr_connect_client_task, 1124 s->addr, 1125 NULL, 1126 chr->gcontext); 1127 } 1128 1129 static gboolean socket_reconnect_timeout(gpointer opaque) 1130 { 1131 Chardev *chr = CHARDEV(opaque); 1132 SocketChardev *s = SOCKET_CHARDEV(opaque); 1133 1134 g_source_unref(s->reconnect_timer); 1135 s->reconnect_timer = NULL; 1136 1137 if (chr->be_open) { 1138 return false; 1139 } 1140 1141 tcp_chr_connect_client_async(chr); 1142 1143 return false; 1144 } 1145 1146 1147 static int qmp_chardev_open_socket_server(Chardev *chr, 1148 bool is_telnet, 1149 bool is_waitconnect, 1150 Error **errp) 1151 { 1152 SocketChardev *s = SOCKET_CHARDEV(chr); 1153 char *name; 1154 if (is_telnet) { 1155 s->do_telnetopt = 1; 1156 } 1157 s->listener = qio_net_listener_new(); 1158 1159 name = g_strdup_printf("chardev-tcp-listener-%s", chr->label); 1160 qio_net_listener_set_name(s->listener, name); 1161 g_free(name); 1162 1163 if (qio_net_listener_open_sync(s->listener, s->addr, errp) < 0) { 1164 object_unref(OBJECT(s->listener)); 1165 s->listener = NULL; 1166 return -1; 1167 } 1168 1169 qapi_free_SocketAddress(s->addr); 1170 s->addr = socket_local_address(s->listener->sioc[0]->fd, errp); 1171 update_disconnected_filename(s); 1172 1173 if (is_waitconnect) { 1174 tcp_chr_accept_server_sync(chr); 1175 } else { 1176 qio_net_listener_set_client_func_full(s->listener, 1177 tcp_chr_accept, 1178 chr, NULL, 1179 chr->gcontext); 1180 } 1181 1182 return 0; 1183 } 1184 1185 1186 static int qmp_chardev_open_socket_client(Chardev *chr, 1187 int64_t reconnect, 1188 Error **errp) 1189 { 1190 SocketChardev *s = SOCKET_CHARDEV(chr); 1191 1192 if (reconnect > 0) { 1193 s->reconnect_time = reconnect; 1194 tcp_chr_connect_client_async(chr); 1195 return 0; 1196 } else { 1197 return tcp_chr_connect_client_sync(chr, errp); 1198 } 1199 } 1200 1201 1202 static bool qmp_chardev_validate_socket(ChardevSocket *sock, 1203 SocketAddress *addr, 1204 Error **errp) 1205 { 1206 /* Validate any options which have a dependency on address type */ 1207 switch (addr->type) { 1208 case SOCKET_ADDRESS_TYPE_FD: 1209 if (sock->has_reconnect) { 1210 error_setg(errp, 1211 "'reconnect' option is incompatible with " 1212 "'fd' address type"); 1213 return false; 1214 } 1215 if (sock->has_tls_creds && 1216 !(sock->has_server && sock->server)) { 1217 error_setg(errp, 1218 "'tls_creds' option is incompatible with " 1219 "'fd' address type as client"); 1220 return false; 1221 } 1222 break; 1223 1224 case SOCKET_ADDRESS_TYPE_UNIX: 1225 if (sock->has_tls_creds) { 1226 error_setg(errp, 1227 "'tls_creds' option is incompatible with " 1228 "'unix' address type"); 1229 return false; 1230 } 1231 break; 1232 1233 case SOCKET_ADDRESS_TYPE_INET: 1234 break; 1235 1236 case SOCKET_ADDRESS_TYPE_VSOCK: 1237 if (sock->has_tls_creds) { 1238 error_setg(errp, 1239 "'tls_creds' option is incompatible with " 1240 "'vsock' address type"); 1241 return false; 1242 } 1243 1244 default: 1245 break; 1246 } 1247 1248 if (sock->has_tls_authz && !sock->has_tls_creds) { 1249 error_setg(errp, "'tls_authz' option requires 'tls_creds' option"); 1250 return false; 1251 } 1252 1253 /* Validate any options which have a dependancy on client vs server */ 1254 if (!sock->has_server || sock->server) { 1255 if (sock->has_reconnect) { 1256 error_setg(errp, 1257 "'reconnect' option is incompatible with " 1258 "socket in server listen mode"); 1259 return false; 1260 } 1261 } else { 1262 if (sock->has_websocket && sock->websocket) { 1263 error_setg(errp, "%s", "Websocket client is not implemented"); 1264 return false; 1265 } 1266 if (sock->has_wait) { 1267 warn_report("'wait' option is deprecated with " 1268 "socket in client connect mode"); 1269 if (sock->wait) { 1270 error_setg(errp, "%s", 1271 "'wait' option is incompatible with " 1272 "socket in client connect mode"); 1273 return false; 1274 } 1275 } 1276 } 1277 1278 return true; 1279 } 1280 1281 1282 static void qmp_chardev_open_socket(Chardev *chr, 1283 ChardevBackend *backend, 1284 bool *be_opened, 1285 Error **errp) 1286 { 1287 SocketChardev *s = SOCKET_CHARDEV(chr); 1288 ChardevSocket *sock = backend->u.socket.data; 1289 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false; 1290 bool is_listen = sock->has_server ? sock->server : true; 1291 bool is_telnet = sock->has_telnet ? sock->telnet : false; 1292 bool is_tn3270 = sock->has_tn3270 ? sock->tn3270 : false; 1293 bool is_waitconnect = sock->has_wait ? sock->wait : false; 1294 bool is_websock = sock->has_websocket ? sock->websocket : false; 1295 int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0; 1296 SocketAddress *addr; 1297 1298 s->is_listen = is_listen; 1299 s->is_telnet = is_telnet; 1300 s->is_tn3270 = is_tn3270; 1301 s->is_websock = is_websock; 1302 s->do_nodelay = do_nodelay; 1303 if (sock->tls_creds) { 1304 Object *creds; 1305 creds = object_resolve_path_component( 1306 object_get_objects_root(), sock->tls_creds); 1307 if (!creds) { 1308 error_setg(errp, "No TLS credentials with id '%s'", 1309 sock->tls_creds); 1310 return; 1311 } 1312 s->tls_creds = (QCryptoTLSCreds *) 1313 object_dynamic_cast(creds, 1314 TYPE_QCRYPTO_TLS_CREDS); 1315 if (!s->tls_creds) { 1316 error_setg(errp, "Object with id '%s' is not TLS credentials", 1317 sock->tls_creds); 1318 return; 1319 } 1320 object_ref(OBJECT(s->tls_creds)); 1321 if (is_listen) { 1322 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) { 1323 error_setg(errp, "%s", 1324 "Expected TLS credentials for server endpoint"); 1325 return; 1326 } 1327 } else { 1328 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) { 1329 error_setg(errp, "%s", 1330 "Expected TLS credentials for client endpoint"); 1331 return; 1332 } 1333 } 1334 } 1335 s->tls_authz = g_strdup(sock->tls_authz); 1336 1337 s->addr = addr = socket_address_flatten(sock->addr); 1338 1339 if (!qmp_chardev_validate_socket(sock, addr, errp)) { 1340 return; 1341 } 1342 1343 qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_RECONNECTABLE); 1344 /* TODO SOCKET_ADDRESS_FD where fd has AF_UNIX */ 1345 if (addr->type == SOCKET_ADDRESS_TYPE_UNIX) { 1346 qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_FD_PASS); 1347 } 1348 1349 /* be isn't opened until we get a connection */ 1350 *be_opened = false; 1351 1352 update_disconnected_filename(s); 1353 1354 if (s->is_listen) { 1355 if (qmp_chardev_open_socket_server(chr, is_telnet || is_tn3270, 1356 is_waitconnect, errp) < 0) { 1357 return; 1358 } 1359 } else { 1360 if (qmp_chardev_open_socket_client(chr, reconnect, errp) < 0) { 1361 return; 1362 } 1363 } 1364 } 1365 1366 static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend, 1367 Error **errp) 1368 { 1369 const char *path = qemu_opt_get(opts, "path"); 1370 const char *host = qemu_opt_get(opts, "host"); 1371 const char *port = qemu_opt_get(opts, "port"); 1372 const char *fd = qemu_opt_get(opts, "fd"); 1373 SocketAddressLegacy *addr; 1374 ChardevSocket *sock; 1375 1376 if ((!!path + !!fd + !!host) != 1) { 1377 error_setg(errp, 1378 "Exactly one of 'path', 'fd' or 'host' required"); 1379 return; 1380 } 1381 1382 if (host && !port) { 1383 error_setg(errp, "chardev: socket: no port given"); 1384 return; 1385 } 1386 1387 backend->type = CHARDEV_BACKEND_KIND_SOCKET; 1388 sock = backend->u.socket.data = g_new0(ChardevSocket, 1); 1389 qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock)); 1390 1391 sock->has_nodelay = qemu_opt_get(opts, "delay"); 1392 sock->nodelay = !qemu_opt_get_bool(opts, "delay", true); 1393 /* 1394 * We have different default to QMP for 'server', hence 1395 * we can't just check for existence of 'server' 1396 */ 1397 sock->has_server = true; 1398 sock->server = qemu_opt_get_bool(opts, "server", false); 1399 sock->has_telnet = qemu_opt_get(opts, "telnet"); 1400 sock->telnet = qemu_opt_get_bool(opts, "telnet", false); 1401 sock->has_tn3270 = qemu_opt_get(opts, "tn3270"); 1402 sock->tn3270 = qemu_opt_get_bool(opts, "tn3270", false); 1403 sock->has_websocket = qemu_opt_get(opts, "websocket"); 1404 sock->websocket = qemu_opt_get_bool(opts, "websocket", false); 1405 /* 1406 * We have different default to QMP for 'wait' when 'server' 1407 * is set, hence we can't just check for existence of 'wait' 1408 */ 1409 sock->has_wait = qemu_opt_find(opts, "wait") || sock->server; 1410 sock->wait = qemu_opt_get_bool(opts, "wait", true); 1411 sock->has_reconnect = qemu_opt_find(opts, "reconnect"); 1412 sock->reconnect = qemu_opt_get_number(opts, "reconnect", 0); 1413 sock->has_tls_creds = qemu_opt_get(opts, "tls-creds"); 1414 sock->tls_creds = g_strdup(qemu_opt_get(opts, "tls-creds")); 1415 sock->has_tls_authz = qemu_opt_get(opts, "tls-authz"); 1416 sock->tls_authz = g_strdup(qemu_opt_get(opts, "tls-authz")); 1417 1418 addr = g_new0(SocketAddressLegacy, 1); 1419 if (path) { 1420 UnixSocketAddress *q_unix; 1421 addr->type = SOCKET_ADDRESS_LEGACY_KIND_UNIX; 1422 q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1); 1423 q_unix->path = g_strdup(path); 1424 } else if (host) { 1425 addr->type = SOCKET_ADDRESS_LEGACY_KIND_INET; 1426 addr->u.inet.data = g_new(InetSocketAddress, 1); 1427 *addr->u.inet.data = (InetSocketAddress) { 1428 .host = g_strdup(host), 1429 .port = g_strdup(port), 1430 .has_to = qemu_opt_get(opts, "to"), 1431 .to = qemu_opt_get_number(opts, "to", 0), 1432 .has_ipv4 = qemu_opt_get(opts, "ipv4"), 1433 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0), 1434 .has_ipv6 = qemu_opt_get(opts, "ipv6"), 1435 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0), 1436 }; 1437 } else if (fd) { 1438 addr->type = SOCKET_ADDRESS_LEGACY_KIND_FD; 1439 addr->u.fd.data = g_new(String, 1); 1440 addr->u.fd.data->str = g_strdup(fd); 1441 } else { 1442 g_assert_not_reached(); 1443 } 1444 sock->addr = addr; 1445 } 1446 1447 static void 1448 char_socket_get_addr(Object *obj, Visitor *v, const char *name, 1449 void *opaque, Error **errp) 1450 { 1451 SocketChardev *s = SOCKET_CHARDEV(obj); 1452 1453 visit_type_SocketAddress(v, name, &s->addr, errp); 1454 } 1455 1456 static bool 1457 char_socket_get_connected(Object *obj, Error **errp) 1458 { 1459 SocketChardev *s = SOCKET_CHARDEV(obj); 1460 1461 return s->state == TCP_CHARDEV_STATE_CONNECTED; 1462 } 1463 1464 static void char_socket_class_init(ObjectClass *oc, void *data) 1465 { 1466 ChardevClass *cc = CHARDEV_CLASS(oc); 1467 1468 cc->parse = qemu_chr_parse_socket; 1469 cc->open = qmp_chardev_open_socket; 1470 cc->chr_wait_connected = tcp_chr_wait_connected; 1471 cc->chr_write = tcp_chr_write; 1472 cc->chr_sync_read = tcp_chr_sync_read; 1473 cc->chr_disconnect = tcp_chr_disconnect; 1474 cc->get_msgfds = tcp_get_msgfds; 1475 cc->set_msgfds = tcp_set_msgfds; 1476 cc->chr_add_client = tcp_chr_add_client; 1477 cc->chr_add_watch = tcp_chr_add_watch; 1478 cc->chr_update_read_handler = tcp_chr_update_read_handler; 1479 1480 object_class_property_add(oc, "addr", "SocketAddress", 1481 char_socket_get_addr, NULL, 1482 NULL, NULL, &error_abort); 1483 1484 object_class_property_add_bool(oc, "connected", char_socket_get_connected, 1485 NULL, &error_abort); 1486 } 1487 1488 static const TypeInfo char_socket_type_info = { 1489 .name = TYPE_CHARDEV_SOCKET, 1490 .parent = TYPE_CHARDEV, 1491 .instance_size = sizeof(SocketChardev), 1492 .instance_finalize = char_socket_finalize, 1493 .class_init = char_socket_class_init, 1494 }; 1495 1496 static void register_types(void) 1497 { 1498 type_register_static(&char_socket_type_info); 1499 } 1500 1501 type_init(register_types); 1502