| 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-websock.h" |
| 29 | #include "qemu/error-report.h" |
| 30 | #include "qemu/module.h" |
| 31 | #include "qemu/option.h" |
| 32 | #include "qapi/error.h" |
| 33 | #include "qapi/clone-visitor.h" |
| 34 | #include "qapi/qapi-visit-sockets.h" |
| 35 | #include "qemu/yank.h" |
| 36 | #include "trace.h" |
| 37 | |
| 38 | #include "chardev/char-io.h" |
| 39 | #include "chardev/char-socket.h" |
| 40 | |
| 41 | static gboolean socket_reconnect_timeout(gpointer opaque); |
| 42 | static void tcp_chr_telnet_init(Chardev *chr); |
| 43 | static char *qemu_chr_compute_filename(SocketChardev *s); |
| 44 | |
| 45 | static void tcp_chr_change_state(SocketChardev *s, TCPChardevState state) |
| 46 | { |
| 47 | switch (state) { |
| 48 | case TCP_CHARDEV_STATE_DISCONNECTED: |
| 49 | break; |
| 50 | case TCP_CHARDEV_STATE_CONNECTING: |
| 51 | assert(s->state == TCP_CHARDEV_STATE_DISCONNECTED); |
| 52 | break; |
| 53 | case TCP_CHARDEV_STATE_CONNECTED: |
| 54 | assert(s->state == TCP_CHARDEV_STATE_CONNECTING); |
| 55 | break; |
| 56 | } |
| 57 | s->state = state; |
| 58 | } |
| 59 | |
| 60 | static void tcp_chr_reconn_timer_cancel(SocketChardev *s) |
| 61 | { |
| 62 | if (s->reconnect_timer) { |
| 63 | g_source_destroy(s->reconnect_timer); |
| 64 | g_source_unref(s->reconnect_timer); |
| 65 | s->reconnect_timer = NULL; |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | static void qemu_chr_socket_restart_timer(Chardev *chr) |
| 70 | { |
| 71 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 72 | char *name; |
| 73 | |
| 74 | assert(s->state == TCP_CHARDEV_STATE_DISCONNECTED); |
| 75 | assert(!s->reconnect_timer); |
| 76 | name = g_strdup_printf("chardev-socket-reconnect-%s", chr->label); |
| 77 | s->reconnect_timer = qemu_chr_timeout_add_ms(chr, |
| 78 | s->reconnect_time_ms, |
| 79 | socket_reconnect_timeout, |
| 80 | chr); |
| 81 | g_source_set_name(s->reconnect_timer, name); |
| 82 | g_free(name); |
| 83 | } |
| 84 | |
| 85 | static void check_report_connect_error(Chardev *chr, |
| 86 | Error *err) |
| 87 | { |
| 88 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 89 | |
| 90 | if (!s->connect_err_reported) { |
| 91 | error_reportf_err(err, |
| 92 | "Unable to connect character device %s: ", |
| 93 | chr->label); |
| 94 | s->connect_err_reported = true; |
| 95 | } else { |
| 96 | error_free(err); |
| 97 | } |
| 98 | qemu_chr_socket_restart_timer(chr); |
| 99 | } |
| 100 | |
| 101 | static void tcp_chr_accept(QIONetListener *listener, |
| 102 | QIOChannelSocket *cioc, |
| 103 | void *opaque); |
| 104 | |
| 105 | static int tcp_chr_read_poll(void *opaque); |
| 106 | static void tcp_chr_disconnect_locked(Chardev *chr); |
| 107 | |
| 108 | /* Called with chr_write_lock held. */ |
| 109 | static int tcp_chr_write(Chardev *chr, const uint8_t *buf, int len) |
| 110 | { |
| 111 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 112 | |
| 113 | if (s->state == TCP_CHARDEV_STATE_CONNECTED) { |
| 114 | int ret = io_channel_send_full(s->ioc, buf, len, |
| 115 | s->write_msgfds, |
| 116 | s->write_msgfds_num); |
| 117 | |
| 118 | /* free the written msgfds in any cases |
| 119 | * other than ret < 0 && errno == EAGAIN |
| 120 | */ |
| 121 | if (!(ret < 0 && EAGAIN == errno) |
| 122 | && s->write_msgfds_num) { |
| 123 | g_free(s->write_msgfds); |
| 124 | s->write_msgfds = 0; |
| 125 | s->write_msgfds_num = 0; |
| 126 | } |
| 127 | |
| 128 | if (ret < 0 && errno != EAGAIN) { |
| 129 | if (tcp_chr_read_poll(chr) <= 0) { |
| 130 | /* Perform disconnect and return error. */ |
| 131 | trace_chr_socket_poll_err(chr, chr->label); |
| 132 | tcp_chr_disconnect_locked(chr); |
| 133 | } /* else let the read handler finish it properly */ |
| 134 | } |
| 135 | |
| 136 | return ret; |
| 137 | } else { |
| 138 | /* Indicate an error. */ |
| 139 | errno = EIO; |
| 140 | return -1; |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | static int tcp_chr_read_poll(void *opaque) |
| 145 | { |
| 146 | Chardev *chr = CHARDEV(opaque); |
| 147 | SocketChardev *s = SOCKET_CHARDEV(opaque); |
| 148 | if (s->state != TCP_CHARDEV_STATE_CONNECTED) { |
| 149 | return 0; |
| 150 | } |
| 151 | s->max_size = qemu_chr_be_can_write(chr); |
| 152 | return s->max_size; |
| 153 | } |
| 154 | |
| 155 | static void tcp_chr_process_IAC_bytes(Chardev *chr, |
| 156 | SocketChardev *s, |
| 157 | uint8_t *buf, int *size) |
| 158 | { |
| 159 | /* Handle any telnet or tn3270 client's basic IAC options. |
| 160 | * For telnet options, it satisfies char by char mode with no echo. |
| 161 | * For tn3270 options, it satisfies binary mode with EOR. |
| 162 | * All IAC options will be removed from the buf and the do_opt |
| 163 | * pointer will be used to track the state of the width of the |
| 164 | * IAC information. |
| 165 | * |
| 166 | * RFC854: "All TELNET commands consist of at least a two byte sequence. |
| 167 | * The commands dealing with option negotiation are three byte sequences, |
| 168 | * the third byte being the code for the option referenced." |
| 169 | * "IAC BREAK", "IAC IP", "IAC NOP" and the double IAC are two bytes. |
| 170 | * "IAC SB", "IAC SE" and "IAC EOR" are saved to split up data boundary |
| 171 | * for tn3270. |
| 172 | * NOP, Break and Interrupt Process(IP) might be encountered during a TN3270 |
| 173 | * session, and NOP and IP need to be done later. |
| 174 | */ |
| 175 | |
| 176 | int i; |
| 177 | int j = 0; |
| 178 | |
| 179 | for (i = 0; i < *size; i++) { |
| 180 | if (s->do_telnetopt > 1) { |
| 181 | if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) { |
| 182 | /* Double IAC means send an IAC */ |
| 183 | if (j != i) { |
| 184 | buf[j] = buf[i]; |
| 185 | } |
| 186 | j++; |
| 187 | s->do_telnetopt = 1; |
| 188 | } else { |
| 189 | if ((unsigned char)buf[i] == IAC_BREAK |
| 190 | && s->do_telnetopt == 2) { |
| 191 | /* Handle IAC break commands by sending a serial break */ |
| 192 | qemu_chr_be_event(chr, CHR_EVENT_BREAK); |
| 193 | s->do_telnetopt++; |
| 194 | } else if (s->is_tn3270 && ((unsigned char)buf[i] == IAC_EOR |
| 195 | || (unsigned char)buf[i] == IAC_SB |
| 196 | || (unsigned char)buf[i] == IAC_SE) |
| 197 | && s->do_telnetopt == 2) { |
| 198 | buf[j++] = IAC; |
| 199 | buf[j++] = buf[i]; |
| 200 | s->do_telnetopt++; |
| 201 | } else if (s->is_tn3270 && ((unsigned char)buf[i] == IAC_IP |
| 202 | || (unsigned char)buf[i] == IAC_NOP) |
| 203 | && s->do_telnetopt == 2) { |
| 204 | /* TODO: IP and NOP need to be implemented later. */ |
| 205 | s->do_telnetopt++; |
| 206 | } |
| 207 | s->do_telnetopt++; |
| 208 | } |
| 209 | if (s->do_telnetopt >= 4) { |
| 210 | s->do_telnetopt = 1; |
| 211 | } |
| 212 | } else { |
| 213 | if ((unsigned char)buf[i] == IAC) { |
| 214 | s->do_telnetopt = 2; |
| 215 | } else { |
| 216 | if (j != i) { |
| 217 | buf[j] = buf[i]; |
| 218 | } |
| 219 | j++; |
| 220 | } |
| 221 | } |
| 222 | } |
| 223 | *size = j; |
| 224 | } |
| 225 | |
| 226 | static int tcp_chr_get_msgfds(Chardev *chr, int *fds, int num) |
| 227 | { |
| 228 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 229 | |
| 230 | int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num; |
| 231 | |
| 232 | assert(num <= TCP_MAX_FDS); |
| 233 | |
| 234 | if (to_copy) { |
| 235 | int i; |
| 236 | |
| 237 | memcpy(fds, s->read_msgfds, to_copy * sizeof(int)); |
| 238 | |
| 239 | /* Close unused fds */ |
| 240 | for (i = to_copy; i < s->read_msgfds_num; i++) { |
| 241 | close(s->read_msgfds[i]); |
| 242 | } |
| 243 | |
| 244 | g_free(s->read_msgfds); |
| 245 | s->read_msgfds = 0; |
| 246 | s->read_msgfds_num = 0; |
| 247 | } |
| 248 | |
| 249 | return to_copy; |
| 250 | } |
| 251 | |
| 252 | static int tcp_chr_set_msgfds(Chardev *chr, int *fds, int num) |
| 253 | { |
| 254 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 255 | |
| 256 | /* clear old pending fd array */ |
| 257 | g_free(s->write_msgfds); |
| 258 | s->write_msgfds = NULL; |
| 259 | s->write_msgfds_num = 0; |
| 260 | |
| 261 | if ((s->state != TCP_CHARDEV_STATE_CONNECTED) || |
| 262 | !qio_channel_has_feature(s->ioc, |
| 263 | QIO_CHANNEL_FEATURE_FD_PASS)) { |
| 264 | return -1; |
| 265 | } |
| 266 | |
| 267 | if (num) { |
| 268 | s->write_msgfds = g_new(int, num); |
| 269 | memcpy(s->write_msgfds, fds, num * sizeof(int)); |
| 270 | } |
| 271 | |
| 272 | s->write_msgfds_num = num; |
| 273 | |
| 274 | return 0; |
| 275 | } |
| 276 | |
| 277 | static ssize_t tcp_chr_recv(Chardev *chr, char *buf, size_t len) |
| 278 | { |
| 279 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 280 | struct iovec iov = { .iov_base = buf, .iov_len = len }; |
| 281 | int ret; |
| 282 | size_t i; |
| 283 | int *msgfds = NULL; |
| 284 | size_t msgfds_num = 0; |
| 285 | Error *err = NULL; |
| 286 | |
| 287 | if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) { |
| 288 | ret = qio_channel_readv_full(s->ioc, &iov, 1, |
| 289 | &msgfds, &msgfds_num, |
| 290 | 0, &err); |
| 291 | } else { |
| 292 | ret = qio_channel_readv_full(s->ioc, &iov, 1, |
| 293 | NULL, NULL, |
| 294 | 0, &err); |
| 295 | } |
| 296 | |
| 297 | if (msgfds_num) { |
| 298 | /* |
| 299 | * Close and clean previous read_msgfds, they are obsolete at |
| 300 | * this point, regardless result of new call to |
| 301 | * qio_channel_readv_full(). |
| 302 | */ |
| 303 | |
| 304 | for (i = 0; i < s->read_msgfds_num; i++) { |
| 305 | close(s->read_msgfds[i]); |
| 306 | } |
| 307 | |
| 308 | if (s->read_msgfds_num) { |
| 309 | g_free(s->read_msgfds); |
| 310 | } |
| 311 | |
| 312 | s->read_msgfds = msgfds; |
| 313 | s->read_msgfds_num = msgfds_num; |
| 314 | } |
| 315 | |
| 316 | if (ret == QIO_CHANNEL_ERR_BLOCK) { |
| 317 | errno = EAGAIN; |
| 318 | ret = -1; |
| 319 | } else if (ret == -1) { |
| 320 | trace_chr_socket_recv_err(chr, chr->label, error_get_pretty(err)); |
| 321 | error_free(err); |
| 322 | errno = EIO; |
| 323 | } else if (ret == 0) { |
| 324 | trace_chr_socket_recv_eof(chr, chr->label); |
| 325 | } |
| 326 | |
| 327 | return ret; |
| 328 | } |
| 329 | |
| 330 | static GSource *tcp_chr_add_watch(Chardev *chr, GIOCondition cond) |
| 331 | { |
| 332 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 333 | if (!s->ioc) { |
| 334 | return NULL; |
| 335 | } |
| 336 | return qio_channel_create_watch(s->ioc, cond); |
| 337 | } |
| 338 | |
| 339 | static void remove_hup_source(SocketChardev *s) |
| 340 | { |
| 341 | if (s->hup_source != NULL) { |
| 342 | g_source_destroy(s->hup_source); |
| 343 | g_source_unref(s->hup_source); |
| 344 | s->hup_source = NULL; |
| 345 | } |
| 346 | } |
| 347 | |
| 348 | static void char_socket_yank_iochannel(void *opaque) |
| 349 | { |
| 350 | QIOChannel *ioc = QIO_CHANNEL(opaque); |
| 351 | |
| 352 | qio_channel_shutdown(ioc, QIO_CHANNEL_SHUTDOWN_BOTH, NULL); |
| 353 | } |
| 354 | |
| 355 | static void tcp_chr_free_connection(Chardev *chr) |
| 356 | { |
| 357 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 358 | int i; |
| 359 | |
| 360 | if (s->read_msgfds_num) { |
| 361 | for (i = 0; i < s->read_msgfds_num; i++) { |
| 362 | close(s->read_msgfds[i]); |
| 363 | } |
| 364 | g_free(s->read_msgfds); |
| 365 | s->read_msgfds = NULL; |
| 366 | s->read_msgfds_num = 0; |
| 367 | } |
| 368 | |
| 369 | remove_hup_source(s); |
| 370 | |
| 371 | tcp_chr_set_msgfds(chr, NULL, 0); |
| 372 | remove_fd_in_watch(chr); |
| 373 | |
| 374 | if (s->registered_yank && s->sioc && |
| 375 | (s->state == TCP_CHARDEV_STATE_CONNECTING |
| 376 | || s->state == TCP_CHARDEV_STATE_CONNECTED)) { |
| 377 | yank_unregister_function(CHARDEV_YANK_INSTANCE(chr->label), |
| 378 | char_socket_yank_iochannel, |
| 379 | QIO_CHANNEL(s->sioc)); |
| 380 | } |
| 381 | |
| 382 | if (s->ioc) { |
| 383 | qio_channel_close(s->ioc, NULL); |
| 384 | } |
| 385 | object_unref(OBJECT(s->sioc)); |
| 386 | s->sioc = NULL; |
| 387 | object_unref(OBJECT(s->ioc)); |
| 388 | s->ioc = NULL; |
| 389 | tcp_chr_change_state(s, TCP_CHARDEV_STATE_DISCONNECTED); |
| 390 | } |
| 391 | |
| 392 | static const char *qemu_chr_socket_protocol(SocketChardev *s) |
| 393 | { |
| 394 | if (s->is_telnet) { |
| 395 | return "telnet"; |
| 396 | } |
| 397 | return s->is_websock ? "websocket" : "tcp"; |
| 398 | } |
| 399 | |
| 400 | static char *qemu_chr_socket_address(SocketChardev *s, const char *prefix) |
| 401 | { |
| 402 | switch (s->addr->type) { |
| 403 | case SOCKET_ADDRESS_TYPE_INET: |
| 404 | return g_strdup_printf("%s%s:%s:%s%s", prefix, |
| 405 | qemu_chr_socket_protocol(s), |
| 406 | s->addr->u.inet.host, |
| 407 | s->addr->u.inet.port, |
| 408 | s->is_listen ? ",server=on" : ""); |
| 409 | break; |
| 410 | case SOCKET_ADDRESS_TYPE_UNIX: |
| 411 | { |
| 412 | const char *tight = "", *abstract = ""; |
| 413 | UnixSocketAddress *sa = &s->addr->u.q_unix; |
| 414 | |
| 415 | #ifdef CONFIG_LINUX |
| 416 | if (sa->has_abstract && sa->abstract) { |
| 417 | abstract = ",abstract=on"; |
| 418 | if (sa->has_tight && sa->tight) { |
| 419 | tight = ",tight=on"; |
| 420 | } |
| 421 | } |
| 422 | #endif |
| 423 | |
| 424 | return g_strdup_printf("%sunix:%s%s%s%s", prefix, sa->path, |
| 425 | abstract, tight, |
| 426 | s->is_listen ? ",server=on" : ""); |
| 427 | break; |
| 428 | } |
| 429 | case SOCKET_ADDRESS_TYPE_FD: |
| 430 | return g_strdup_printf("%sfd:%s%s", prefix, s->addr->u.fd.str, |
| 431 | s->is_listen ? ",server=on" : ""); |
| 432 | break; |
| 433 | case SOCKET_ADDRESS_TYPE_VSOCK: |
| 434 | return g_strdup_printf("%svsock:%s:%s", prefix, |
| 435 | s->addr->u.vsock.cid, |
| 436 | s->addr->u.vsock.port); |
| 437 | default: |
| 438 | abort(); |
| 439 | } |
| 440 | } |
| 441 | |
| 442 | static char *tcp_chr_get_filename(Chardev *chr) |
| 443 | { |
| 444 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 445 | |
| 446 | if (s->state == TCP_CHARDEV_STATE_CONNECTED) { |
| 447 | return qemu_chr_compute_filename(s); |
| 448 | } else if (s->addr) { |
| 449 | return qemu_chr_socket_address(s, "disconnected:"); |
| 450 | } |
| 451 | |
| 452 | return g_strdup("disconnected:socket"); |
| 453 | } |
| 454 | |
| 455 | /* NB may be called even if tcp_chr_connect has not been |
| 456 | * reached, due to TLS or telnet initialization failure, |
| 457 | * so can *not* assume s->state == TCP_CHARDEV_STATE_CONNECTED |
| 458 | * This must be called with chr->chr_write_lock held. |
| 459 | */ |
| 460 | static void tcp_chr_disconnect_locked(Chardev *chr) |
| 461 | { |
| 462 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 463 | bool emit_close = s->state == TCP_CHARDEV_STATE_CONNECTED; |
| 464 | |
| 465 | trace_chr_socket_disconnect(chr, chr->label); |
| 466 | tcp_chr_free_connection(chr); |
| 467 | |
| 468 | if (s->listener) { |
| 469 | qio_net_listener_set_client_func_full(s->listener, tcp_chr_accept, |
| 470 | chr, NULL, chr->gcontext); |
| 471 | } |
| 472 | if (emit_close) { |
| 473 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); |
| 474 | } |
| 475 | if (s->reconnect_time_ms && !s->reconnect_timer) { |
| 476 | qemu_chr_socket_restart_timer(chr); |
| 477 | } |
| 478 | } |
| 479 | |
| 480 | static void tcp_chr_disconnect(Chardev *chr) |
| 481 | { |
| 482 | qemu_mutex_lock(&chr->chr_write_lock); |
| 483 | tcp_chr_disconnect_locked(chr); |
| 484 | qemu_mutex_unlock(&chr->chr_write_lock); |
| 485 | } |
| 486 | |
| 487 | static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) |
| 488 | { |
| 489 | Chardev *chr = CHARDEV(opaque); |
| 490 | SocketChardev *s = SOCKET_CHARDEV(opaque); |
| 491 | QEMU_UNINITIALIZED uint8_t buf[CHR_READ_BUF_LEN]; |
| 492 | int len, size; |
| 493 | |
| 494 | if ((s->state != TCP_CHARDEV_STATE_CONNECTED) || |
| 495 | s->max_size <= 0) { |
| 496 | return TRUE; |
| 497 | } |
| 498 | len = sizeof(buf); |
| 499 | if (len > s->max_size) { |
| 500 | len = s->max_size; |
| 501 | } |
| 502 | size = tcp_chr_recv(chr, (void *)buf, len); |
| 503 | if (size == 0 || (size == -1 && errno != EAGAIN)) { |
| 504 | /* connection closed */ |
| 505 | tcp_chr_disconnect(chr); |
| 506 | } else if (size > 0) { |
| 507 | if (s->do_telnetopt) { |
| 508 | tcp_chr_process_IAC_bytes(chr, s, buf, &size); |
| 509 | } |
| 510 | if (size > 0) { |
| 511 | qemu_chr_be_write(chr, buf, size); |
| 512 | } |
| 513 | } |
| 514 | |
| 515 | return TRUE; |
| 516 | } |
| 517 | |
| 518 | static gboolean tcp_chr_hup(QIOChannel *channel, |
| 519 | GIOCondition cond, |
| 520 | void *opaque) |
| 521 | { |
| 522 | Chardev *chr = CHARDEV(opaque); |
| 523 | trace_chr_socket_hangup(chr, chr->label); |
| 524 | tcp_chr_disconnect(chr); |
| 525 | return G_SOURCE_REMOVE; |
| 526 | } |
| 527 | |
| 528 | static int tcp_chr_sync_read(Chardev *chr, const uint8_t *buf, int len) |
| 529 | { |
| 530 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 531 | int size; |
| 532 | int saved_errno; |
| 533 | Error *local_err = NULL; |
| 534 | |
| 535 | if (s->state != TCP_CHARDEV_STATE_CONNECTED) { |
| 536 | return 0; |
| 537 | } |
| 538 | |
| 539 | if (!qio_channel_set_blocking(s->ioc, true, &local_err)) { |
| 540 | error_report_err(local_err); |
| 541 | return -1; |
| 542 | } |
| 543 | size = tcp_chr_recv(chr, (void *) buf, len); |
| 544 | saved_errno = errno; |
| 545 | if (s->state != TCP_CHARDEV_STATE_DISCONNECTED) { |
| 546 | if (!qio_channel_set_blocking(s->ioc, false, &local_err)) { |
| 547 | error_report_err(local_err); |
| 548 | /* failed to recover non-blocking state */ |
| 549 | tcp_chr_disconnect(chr); |
| 550 | } |
| 551 | } |
| 552 | if (size == 0) { |
| 553 | /* connection closed */ |
| 554 | tcp_chr_disconnect(chr); |
| 555 | } |
| 556 | |
| 557 | errno = saved_errno; |
| 558 | return size; |
| 559 | } |
| 560 | |
| 561 | static char *qemu_chr_compute_filename(SocketChardev *s) |
| 562 | { |
| 563 | struct sockaddr_storage *ss = &s->sioc->localAddr; |
| 564 | struct sockaddr_storage *ps = &s->sioc->remoteAddr; |
| 565 | socklen_t ss_len = s->sioc->localAddrLen; |
| 566 | socklen_t ps_len = s->sioc->remoteAddrLen; |
| 567 | char shost[NI_MAXHOST], sserv[NI_MAXSERV]; |
| 568 | char phost[NI_MAXHOST], pserv[NI_MAXSERV]; |
| 569 | const char *left = "", *right = ""; |
| 570 | |
| 571 | switch (ss->ss_family) { |
| 572 | case AF_UNIX: |
| 573 | if (s->is_listen) { |
| 574 | return g_strdup_printf("unix:%s,server=on", |
| 575 | ((struct sockaddr_un *)(ss))->sun_path); |
| 576 | } else { |
| 577 | return g_strdup_printf("unix:%s", |
| 578 | ((struct sockaddr_un *)(ps))->sun_path); |
| 579 | } |
| 580 | case AF_INET6: |
| 581 | left = "["; |
| 582 | right = "]"; |
| 583 | /* fall through */ |
| 584 | case AF_INET: |
| 585 | getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost), |
| 586 | sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV); |
| 587 | getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost), |
| 588 | pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV); |
| 589 | return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s", |
| 590 | qemu_chr_socket_protocol(s), |
| 591 | left, shost, right, sserv, |
| 592 | s->is_listen ? ",server=on" : "", |
| 593 | left, phost, right, pserv); |
| 594 | |
| 595 | default: |
| 596 | return g_strdup_printf("unknown"); |
| 597 | } |
| 598 | } |
| 599 | |
| 600 | static void update_ioc_handlers(SocketChardev *s) |
| 601 | { |
| 602 | Chardev *chr = CHARDEV(s); |
| 603 | |
| 604 | if (s->state != TCP_CHARDEV_STATE_CONNECTED) { |
| 605 | return; |
| 606 | } |
| 607 | |
| 608 | remove_fd_in_watch(chr); |
| 609 | chr->gsource = io_add_watch_poll(chr, s->ioc, |
| 610 | tcp_chr_read_poll, |
| 611 | tcp_chr_read, chr, |
| 612 | chr->gcontext); |
| 613 | |
| 614 | remove_hup_source(s); |
| 615 | s->hup_source = qio_channel_create_watch(s->ioc, G_IO_HUP); |
| 616 | /* |
| 617 | * poll() is liable to return POLLHUP even when there is |
| 618 | * still incoming data available to read on the FD. If |
| 619 | * we have the hup_source at the same priority as the |
| 620 | * main io_add_watch_poll GSource, then we might end up |
| 621 | * processing the POLLHUP event first, closing the FD, |
| 622 | * and as a result silently discard data we should have |
| 623 | * read. |
| 624 | * |
| 625 | * By setting the hup_source to G_PRIORITY_DEFAULT + 1, |
| 626 | * we ensure that io_add_watch_poll GSource will always |
| 627 | * be dispatched first, thus guaranteeing we will be |
| 628 | * able to process all incoming data before closing the |
| 629 | * FD |
| 630 | */ |
| 631 | g_source_set_priority(s->hup_source, G_PRIORITY_DEFAULT + 1); |
| 632 | g_source_set_callback(s->hup_source, (GSourceFunc)tcp_chr_hup, |
| 633 | chr, NULL); |
| 634 | g_source_attach(s->hup_source, chr->gcontext); |
| 635 | } |
| 636 | |
| 637 | static void tcp_chr_connect(void *opaque) |
| 638 | { |
| 639 | Chardev *chr = CHARDEV(opaque); |
| 640 | SocketChardev *s = SOCKET_CHARDEV(opaque); |
| 641 | |
| 642 | tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTED); |
| 643 | update_ioc_handlers(s); |
| 644 | qemu_chr_be_event(chr, CHR_EVENT_OPENED); |
| 645 | } |
| 646 | |
| 647 | static void tcp_chr_telnet_destroy(SocketChardev *s) |
| 648 | { |
| 649 | if (s->telnet_source) { |
| 650 | g_source_destroy(s->telnet_source); |
| 651 | g_source_unref(s->telnet_source); |
| 652 | s->telnet_source = NULL; |
| 653 | } |
| 654 | } |
| 655 | |
| 656 | static void tcp_chr_update_read_handler(Chardev *chr) |
| 657 | { |
| 658 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 659 | |
| 660 | if (s->listener && s->state == TCP_CHARDEV_STATE_DISCONNECTED) { |
| 661 | /* |
| 662 | * It's possible that chardev context is changed in |
| 663 | * qemu_chr_be_update_read_handlers(). Reset it for QIO net |
| 664 | * listener if there is. |
| 665 | */ |
| 666 | qio_net_listener_set_client_func_full(s->listener, tcp_chr_accept, |
| 667 | chr, NULL, chr->gcontext); |
| 668 | } |
| 669 | |
| 670 | if (s->telnet_source) { |
| 671 | tcp_chr_telnet_init(CHARDEV(s)); |
| 672 | } |
| 673 | |
| 674 | update_ioc_handlers(s); |
| 675 | } |
| 676 | |
| 677 | static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc, |
| 678 | GIOCondition cond G_GNUC_UNUSED, |
| 679 | gpointer user_data) |
| 680 | { |
| 681 | SocketChardev *s = user_data; |
| 682 | Chardev *chr = CHARDEV(s); |
| 683 | TCPChardevTelnetInit *init = s->telnet_init; |
| 684 | Error *err = NULL; |
| 685 | ssize_t ret; |
| 686 | |
| 687 | assert(init); |
| 688 | |
| 689 | ret = qio_channel_write(ioc, init->buf, init->buflen, &err); |
| 690 | if (ret < 0) { |
| 691 | if (ret == QIO_CHANNEL_ERR_BLOCK) { |
| 692 | ret = 0; |
| 693 | } else { |
| 694 | trace_chr_socket_write_err(chr, chr->label, error_get_pretty(err)); |
| 695 | error_free(err); |
| 696 | tcp_chr_disconnect(chr); |
| 697 | goto end; |
| 698 | } |
| 699 | } |
| 700 | init->buflen -= ret; |
| 701 | |
| 702 | if (init->buflen == 0) { |
| 703 | tcp_chr_connect(chr); |
| 704 | goto end; |
| 705 | } |
| 706 | |
| 707 | memmove(init->buf, init->buf + ret, init->buflen); |
| 708 | |
| 709 | return G_SOURCE_CONTINUE; |
| 710 | |
| 711 | end: |
| 712 | g_free(s->telnet_init); |
| 713 | s->telnet_init = NULL; |
| 714 | g_source_unref(s->telnet_source); |
| 715 | s->telnet_source = NULL; |
| 716 | return G_SOURCE_REMOVE; |
| 717 | } |
| 718 | |
| 719 | static void tcp_chr_telnet_init(Chardev *chr) |
| 720 | { |
| 721 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 722 | TCPChardevTelnetInit *init; |
| 723 | size_t n = 0; |
| 724 | |
| 725 | /* Destroy existing task */ |
| 726 | tcp_chr_telnet_destroy(s); |
| 727 | |
| 728 | if (s->telnet_init) { |
| 729 | /* We are possibly during a handshake already */ |
| 730 | goto cont; |
| 731 | } |
| 732 | |
| 733 | s->telnet_init = g_new0(TCPChardevTelnetInit, 1); |
| 734 | init = s->telnet_init; |
| 735 | |
| 736 | #define IACSET(x, a, b, c) \ |
| 737 | do { \ |
| 738 | x[n++] = a; \ |
| 739 | x[n++] = b; \ |
| 740 | x[n++] = c; \ |
| 741 | } while (0) |
| 742 | |
| 743 | if (!s->is_tn3270) { |
| 744 | init->buflen = 12; |
| 745 | /* Prep the telnet negotiation to put telnet in binary, |
| 746 | * no echo, single char mode */ |
| 747 | IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */ |
| 748 | IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */ |
| 749 | IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */ |
| 750 | IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */ |
| 751 | } else { |
| 752 | init->buflen = 21; |
| 753 | /* Prep the TN3270 negotiation based on RFC1576 */ |
| 754 | IACSET(init->buf, 0xff, 0xfd, 0x19); /* IAC DO EOR */ |
| 755 | IACSET(init->buf, 0xff, 0xfb, 0x19); /* IAC WILL EOR */ |
| 756 | IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO BINARY */ |
| 757 | IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL BINARY */ |
| 758 | IACSET(init->buf, 0xff, 0xfd, 0x18); /* IAC DO TERMINAL TYPE */ |
| 759 | IACSET(init->buf, 0xff, 0xfa, 0x18); /* IAC SB TERMINAL TYPE */ |
| 760 | IACSET(init->buf, 0x01, 0xff, 0xf0); /* SEND IAC SE */ |
| 761 | } |
| 762 | |
| 763 | #undef IACSET |
| 764 | |
| 765 | cont: |
| 766 | s->telnet_source = qio_channel_add_watch_source(s->ioc, G_IO_OUT, |
| 767 | tcp_chr_telnet_init_io, |
| 768 | s, NULL, |
| 769 | chr->gcontext); |
| 770 | } |
| 771 | |
| 772 | |
| 773 | static void tcp_chr_websock_handshake(QIOTask *task, gpointer user_data) |
| 774 | { |
| 775 | Chardev *chr = user_data; |
| 776 | SocketChardev *s = user_data; |
| 777 | Error *err = NULL; |
| 778 | |
| 779 | if (qio_task_propagate_error(task, &err)) { |
| 780 | trace_chr_socket_ws_handshake_err(chr, chr->label, |
| 781 | error_get_pretty(err)); |
| 782 | error_free(err); |
| 783 | tcp_chr_disconnect(chr); |
| 784 | } else { |
| 785 | if (s->do_telnetopt) { |
| 786 | tcp_chr_telnet_init(chr); |
| 787 | } else { |
| 788 | tcp_chr_connect(chr); |
| 789 | } |
| 790 | } |
| 791 | } |
| 792 | |
| 793 | |
| 794 | static void tcp_chr_websock_init(Chardev *chr) |
| 795 | { |
| 796 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 797 | QIOChannelWebsock *wioc = NULL; |
| 798 | gchar *name; |
| 799 | |
| 800 | wioc = qio_channel_websock_new_server(s->ioc); |
| 801 | |
| 802 | name = g_strdup_printf("chardev-websocket-server-%s", chr->label); |
| 803 | qio_channel_set_name(QIO_CHANNEL(wioc), name); |
| 804 | g_free(name); |
| 805 | object_unref(OBJECT(s->ioc)); |
| 806 | s->ioc = QIO_CHANNEL(wioc); |
| 807 | |
| 808 | qio_channel_websock_handshake(wioc, tcp_chr_websock_handshake, chr, NULL); |
| 809 | } |
| 810 | |
| 811 | |
| 812 | static void tcp_chr_tls_handshake(QIOTask *task, |
| 813 | gpointer user_data) |
| 814 | { |
| 815 | Chardev *chr = user_data; |
| 816 | SocketChardev *s = user_data; |
| 817 | Error *err = NULL; |
| 818 | |
| 819 | if (qio_task_propagate_error(task, &err)) { |
| 820 | trace_chr_socket_tls_handshake_err(chr, chr->label, |
| 821 | error_get_pretty(err)); |
| 822 | error_free(err); |
| 823 | tcp_chr_disconnect(chr); |
| 824 | } else { |
| 825 | if (s->is_websock) { |
| 826 | tcp_chr_websock_init(chr); |
| 827 | } else if (s->do_telnetopt) { |
| 828 | tcp_chr_telnet_init(chr); |
| 829 | } else { |
| 830 | tcp_chr_connect(chr); |
| 831 | } |
| 832 | } |
| 833 | } |
| 834 | |
| 835 | |
| 836 | static void tcp_chr_tls_init(Chardev *chr) |
| 837 | { |
| 838 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 839 | QIOChannelTLS *tioc; |
| 840 | gchar *name; |
| 841 | Error *err = NULL; |
| 842 | |
| 843 | if (s->is_listen) { |
| 844 | tioc = qio_channel_tls_new_server( |
| 845 | s->ioc, s->tls_creds, |
| 846 | s->tls_authz, |
| 847 | &err); |
| 848 | } else { |
| 849 | tioc = qio_channel_tls_new_client( |
| 850 | s->ioc, s->tls_creds, |
| 851 | s->addr->u.inet.host, |
| 852 | &err); |
| 853 | } |
| 854 | if (tioc == NULL) { |
| 855 | trace_chr_socket_tls_init_err(chr, chr->label, error_get_pretty(err)); |
| 856 | error_free(err); |
| 857 | tcp_chr_disconnect(chr); |
| 858 | return; |
| 859 | } |
| 860 | name = g_strdup_printf("chardev-tls-%s-%s", |
| 861 | s->is_listen ? "server" : "client", |
| 862 | chr->label); |
| 863 | qio_channel_set_name(QIO_CHANNEL(tioc), name); |
| 864 | g_free(name); |
| 865 | object_unref(OBJECT(s->ioc)); |
| 866 | s->ioc = QIO_CHANNEL(tioc); |
| 867 | |
| 868 | qio_channel_tls_handshake(tioc, |
| 869 | tcp_chr_tls_handshake, |
| 870 | chr, |
| 871 | NULL, |
| 872 | chr->gcontext); |
| 873 | } |
| 874 | |
| 875 | |
| 876 | static void tcp_chr_set_client_ioc_name(Chardev *chr, |
| 877 | QIOChannelSocket *sioc) |
| 878 | { |
| 879 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 880 | char *name; |
| 881 | name = g_strdup_printf("chardev-tcp-%s-%s", |
| 882 | s->is_listen ? "server" : "client", |
| 883 | chr->label); |
| 884 | qio_channel_set_name(QIO_CHANNEL(sioc), name); |
| 885 | g_free(name); |
| 886 | |
| 887 | } |
| 888 | |
| 889 | static int tcp_chr_new_client(Chardev *chr, QIOChannelSocket *sioc) |
| 890 | { |
| 891 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 892 | Error *local_err = NULL; |
| 893 | |
| 894 | if (s->state != TCP_CHARDEV_STATE_CONNECTING) { |
| 895 | return -1; |
| 896 | } |
| 897 | |
| 898 | if (!qio_channel_set_blocking(QIO_CHANNEL(sioc), false, &local_err)) { |
| 899 | error_report_err(local_err); |
| 900 | return -1; |
| 901 | } |
| 902 | |
| 903 | s->ioc = QIO_CHANNEL(sioc); |
| 904 | object_ref(OBJECT(sioc)); |
| 905 | s->sioc = sioc; |
| 906 | object_ref(OBJECT(sioc)); |
| 907 | |
| 908 | if (s->registered_yank) { |
| 909 | yank_register_function(CHARDEV_YANK_INSTANCE(chr->label), |
| 910 | char_socket_yank_iochannel, |
| 911 | QIO_CHANNEL(sioc)); |
| 912 | } |
| 913 | |
| 914 | if (s->do_nodelay) { |
| 915 | qio_channel_set_delay(s->ioc, false); |
| 916 | } |
| 917 | if (s->listener) { |
| 918 | qio_net_listener_set_client_func_full(s->listener, NULL, NULL, |
| 919 | NULL, chr->gcontext); |
| 920 | } |
| 921 | |
| 922 | if (s->tls_creds) { |
| 923 | tcp_chr_tls_init(chr); |
| 924 | } else if (s->is_websock) { |
| 925 | tcp_chr_websock_init(chr); |
| 926 | } else if (s->do_telnetopt) { |
| 927 | tcp_chr_telnet_init(chr); |
| 928 | } else { |
| 929 | tcp_chr_connect(chr); |
| 930 | } |
| 931 | |
| 932 | return 0; |
| 933 | } |
| 934 | |
| 935 | |
| 936 | static int tcp_chr_add_client(Chardev *chr, int fd) |
| 937 | { |
| 938 | int ret; |
| 939 | QIOChannelSocket *sioc; |
| 940 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 941 | |
| 942 | if (s->state != TCP_CHARDEV_STATE_DISCONNECTED) { |
| 943 | return -1; |
| 944 | } |
| 945 | |
| 946 | sioc = qio_channel_socket_new_fd(fd, NULL); |
| 947 | if (!sioc) { |
| 948 | return -1; |
| 949 | } |
| 950 | tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); |
| 951 | tcp_chr_set_client_ioc_name(chr, sioc); |
| 952 | ret = tcp_chr_new_client(chr, sioc); |
| 953 | object_unref(OBJECT(sioc)); |
| 954 | return ret; |
| 955 | } |
| 956 | |
| 957 | static void tcp_chr_accept(QIONetListener *listener, |
| 958 | QIOChannelSocket *cioc, |
| 959 | void *opaque) |
| 960 | { |
| 961 | Chardev *chr = CHARDEV(opaque); |
| 962 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 963 | |
| 964 | tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); |
| 965 | tcp_chr_set_client_ioc_name(chr, cioc); |
| 966 | tcp_chr_new_client(chr, cioc); |
| 967 | } |
| 968 | |
| 969 | |
| 970 | static int tcp_chr_connect_client_sync(Chardev *chr, Error **errp) |
| 971 | { |
| 972 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 973 | QIOChannelSocket *sioc = qio_channel_socket_new(); |
| 974 | tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); |
| 975 | tcp_chr_set_client_ioc_name(chr, sioc); |
| 976 | if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) { |
| 977 | tcp_chr_change_state(s, TCP_CHARDEV_STATE_DISCONNECTED); |
| 978 | object_unref(OBJECT(sioc)); |
| 979 | return -1; |
| 980 | } |
| 981 | tcp_chr_new_client(chr, sioc); |
| 982 | object_unref(OBJECT(sioc)); |
| 983 | return 0; |
| 984 | } |
| 985 | |
| 986 | |
| 987 | static void tcp_chr_accept_server_sync(Chardev *chr) |
| 988 | { |
| 989 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 990 | QIOChannelSocket *sioc; |
| 991 | g_autofree char *filename = qemu_chr_get_filename(chr); |
| 992 | info_report("QEMU waiting for connection on: %s", filename); |
| 993 | tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); |
| 994 | sioc = qio_net_listener_wait_client(s->listener); |
| 995 | tcp_chr_set_client_ioc_name(chr, sioc); |
| 996 | tcp_chr_new_client(chr, sioc); |
| 997 | object_unref(OBJECT(sioc)); |
| 998 | } |
| 999 | |
| 1000 | |
| 1001 | static int tcp_chr_wait_connected(Chardev *chr, Error **errp) |
| 1002 | { |
| 1003 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 1004 | const char *opts[] = { "telnet", "tn3270", "websock", "tls-creds" }; |
| 1005 | bool optset[] = { s->is_telnet, s->is_tn3270, s->is_websock, s->tls_creds }; |
| 1006 | size_t i; |
| 1007 | |
| 1008 | QEMU_BUILD_BUG_ON(G_N_ELEMENTS(opts) != G_N_ELEMENTS(optset)); |
| 1009 | for (i = 0; i < G_N_ELEMENTS(opts); i++) { |
| 1010 | if (optset[i]) { |
| 1011 | error_setg(errp, |
| 1012 | "'%s' option is incompatible with waiting for " |
| 1013 | "connection completion", opts[i]); |
| 1014 | return -1; |
| 1015 | } |
| 1016 | } |
| 1017 | |
| 1018 | tcp_chr_reconn_timer_cancel(s); |
| 1019 | |
| 1020 | /* |
| 1021 | * We expect states to be as follows: |
| 1022 | * |
| 1023 | * - server |
| 1024 | * - wait -> CONNECTED |
| 1025 | * - nowait -> DISCONNECTED |
| 1026 | * - client |
| 1027 | * - reconnect == 0 -> CONNECTED |
| 1028 | * - reconnect != 0 -> CONNECTING |
| 1029 | * |
| 1030 | */ |
| 1031 | if (s->state == TCP_CHARDEV_STATE_CONNECTING) { |
| 1032 | if (!s->connect_task) { |
| 1033 | error_setg(errp, |
| 1034 | "Unexpected 'connecting' state without connect task " |
| 1035 | "while waiting for connection completion"); |
| 1036 | return -1; |
| 1037 | } |
| 1038 | /* |
| 1039 | * tcp_chr_wait_connected should only ever be run from the |
| 1040 | * main loop thread associated with chr->gcontext, otherwise |
| 1041 | * qio_task_wait_thread has a dangerous race condition with |
| 1042 | * free'ing of the s->connect_task object. |
| 1043 | * |
| 1044 | * Acquiring the main context doesn't 100% prove we're in |
| 1045 | * the main loop thread, but it does at least guarantee |
| 1046 | * that the main loop won't be executed by another thread |
| 1047 | * avoiding the race condition with the task idle callback. |
| 1048 | */ |
| 1049 | g_main_context_acquire(chr->gcontext); |
| 1050 | qio_task_wait_thread(s->connect_task); |
| 1051 | g_main_context_release(chr->gcontext); |
| 1052 | |
| 1053 | /* |
| 1054 | * The completion callback (qemu_chr_socket_connected) for |
| 1055 | * s->connect_task should have set this to NULL by the time |
| 1056 | * qio_task_wait_thread has returned. |
| 1057 | */ |
| 1058 | assert(!s->connect_task); |
| 1059 | |
| 1060 | /* |
| 1061 | * NB we are *not* guaranteed to have "s->state == ..CONNECTED" |
| 1062 | * at this point as this first connect may be failed, so |
| 1063 | * allow the next loop to run regardless. |
| 1064 | */ |
| 1065 | } |
| 1066 | |
| 1067 | while (s->state != TCP_CHARDEV_STATE_CONNECTED) { |
| 1068 | if (s->is_listen) { |
| 1069 | tcp_chr_accept_server_sync(chr); |
| 1070 | } else { |
| 1071 | Error *err = NULL; |
| 1072 | if (tcp_chr_connect_client_sync(chr, &err) < 0) { |
| 1073 | if (s->reconnect_time_ms) { |
| 1074 | error_free(err); |
| 1075 | g_usleep(s->reconnect_time_ms * 1000ULL); |
| 1076 | } else { |
| 1077 | error_propagate(errp, err); |
| 1078 | return -1; |
| 1079 | } |
| 1080 | } |
| 1081 | } |
| 1082 | } |
| 1083 | |
| 1084 | return 0; |
| 1085 | } |
| 1086 | |
| 1087 | static void char_socket_finalize(Object *obj) |
| 1088 | { |
| 1089 | Chardev *chr = CHARDEV(obj); |
| 1090 | SocketChardev *s = SOCKET_CHARDEV(obj); |
| 1091 | |
| 1092 | tcp_chr_free_connection(chr); |
| 1093 | tcp_chr_reconn_timer_cancel(s); |
| 1094 | qapi_free_SocketAddress(s->addr); |
| 1095 | tcp_chr_telnet_destroy(s); |
| 1096 | g_free(s->telnet_init); |
| 1097 | if (s->listener) { |
| 1098 | qio_net_listener_set_client_func_full(s->listener, NULL, NULL, |
| 1099 | NULL, chr->gcontext); |
| 1100 | object_unref(OBJECT(s->listener)); |
| 1101 | s->listener = NULL; |
| 1102 | } |
| 1103 | if (s->tls_creds) { |
| 1104 | object_unref(OBJECT(s->tls_creds)); |
| 1105 | } |
| 1106 | g_free(s->tls_authz); |
| 1107 | if (s->registered_yank) { |
| 1108 | /* |
| 1109 | * In the chardev-change special-case, we shouldn't unregister the yank |
| 1110 | * instance, as it still may be needed. |
| 1111 | */ |
| 1112 | if (!chr->handover_yank_instance) { |
| 1113 | yank_unregister_instance(CHARDEV_YANK_INSTANCE(chr->label)); |
| 1114 | } |
| 1115 | } |
| 1116 | |
| 1117 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); |
| 1118 | } |
| 1119 | |
| 1120 | static void qemu_chr_socket_connected(QIOTask *task, void *opaque) |
| 1121 | { |
| 1122 | QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(qio_task_get_source(task)); |
| 1123 | Chardev *chr = CHARDEV(opaque); |
| 1124 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 1125 | Error *err = NULL; |
| 1126 | |
| 1127 | s->connect_task = NULL; |
| 1128 | |
| 1129 | if (qio_task_propagate_error(task, &err)) { |
| 1130 | tcp_chr_change_state(s, TCP_CHARDEV_STATE_DISCONNECTED); |
| 1131 | check_report_connect_error(chr, err); |
| 1132 | goto cleanup; |
| 1133 | } |
| 1134 | |
| 1135 | s->connect_err_reported = false; |
| 1136 | tcp_chr_new_client(chr, sioc); |
| 1137 | |
| 1138 | cleanup: |
| 1139 | object_unref(OBJECT(sioc)); |
| 1140 | } |
| 1141 | |
| 1142 | |
| 1143 | static void tcp_chr_connect_client_task(QIOTask *task, |
| 1144 | gpointer opaque) |
| 1145 | { |
| 1146 | QIOChannelSocket *ioc = QIO_CHANNEL_SOCKET(qio_task_get_source(task)); |
| 1147 | SocketAddress *addr = opaque; |
| 1148 | Error *err = NULL; |
| 1149 | |
| 1150 | qio_channel_socket_connect_sync(ioc, addr, &err); |
| 1151 | |
| 1152 | qio_task_set_error(task, err); |
| 1153 | } |
| 1154 | |
| 1155 | |
| 1156 | static void tcp_chr_connect_client_async(Chardev *chr) |
| 1157 | { |
| 1158 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 1159 | QIOChannelSocket *sioc; |
| 1160 | |
| 1161 | tcp_chr_change_state(s, TCP_CHARDEV_STATE_CONNECTING); |
| 1162 | sioc = qio_channel_socket_new(); |
| 1163 | tcp_chr_set_client_ioc_name(chr, sioc); |
| 1164 | /* |
| 1165 | * Normally code would use the qio_channel_socket_connect_async |
| 1166 | * method which uses a QIOTask + qio_task_set_error internally |
| 1167 | * to avoid blocking. The tcp_chr_wait_connected method, however, |
| 1168 | * needs a way to synchronize with completion of the background |
| 1169 | * connect task which can't be done with the QIOChannelSocket |
| 1170 | * async APIs. Thus we must use QIOTask directly to implement |
| 1171 | * the non-blocking concept locally. |
| 1172 | */ |
| 1173 | s->connect_task = qio_task_new(OBJECT(sioc), |
| 1174 | qemu_chr_socket_connected, |
| 1175 | object_ref(OBJECT(chr)), |
| 1176 | (GDestroyNotify)object_unref); |
| 1177 | qio_task_run_in_thread(s->connect_task, |
| 1178 | tcp_chr_connect_client_task, |
| 1179 | s->addr, |
| 1180 | NULL, |
| 1181 | chr->gcontext); |
| 1182 | } |
| 1183 | |
| 1184 | static gboolean socket_reconnect_timeout(gpointer opaque) |
| 1185 | { |
| 1186 | Chardev *chr = CHARDEV(opaque); |
| 1187 | SocketChardev *s = SOCKET_CHARDEV(opaque); |
| 1188 | |
| 1189 | qemu_mutex_lock(&chr->chr_write_lock); |
| 1190 | g_source_unref(s->reconnect_timer); |
| 1191 | s->reconnect_timer = NULL; |
| 1192 | qemu_mutex_unlock(&chr->chr_write_lock); |
| 1193 | |
| 1194 | if (chr->be_open) { |
| 1195 | return false; |
| 1196 | } |
| 1197 | |
| 1198 | tcp_chr_connect_client_async(chr); |
| 1199 | |
| 1200 | return false; |
| 1201 | } |
| 1202 | |
| 1203 | |
| 1204 | static int qmp_chardev_open_socket_server(Chardev *chr, |
| 1205 | bool is_telnet, |
| 1206 | bool is_waitconnect, |
| 1207 | Error **errp) |
| 1208 | { |
| 1209 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 1210 | char *name; |
| 1211 | if (is_telnet) { |
| 1212 | s->do_telnetopt = 1; |
| 1213 | } |
| 1214 | s->listener = qio_net_listener_new(); |
| 1215 | |
| 1216 | name = g_strdup_printf("chardev-tcp-listener-%s", chr->label); |
| 1217 | qio_net_listener_set_name(s->listener, name); |
| 1218 | g_free(name); |
| 1219 | |
| 1220 | if (s->addr->type == SOCKET_ADDRESS_TYPE_FD && !*s->addr->u.fd.str) { |
| 1221 | goto skip_listen; |
| 1222 | } |
| 1223 | |
| 1224 | if (qio_net_listener_open_sync(s->listener, s->addr, 1, errp) < 0) { |
| 1225 | object_unref(OBJECT(s->listener)); |
| 1226 | s->listener = NULL; |
| 1227 | return -1; |
| 1228 | } |
| 1229 | |
| 1230 | qapi_free_SocketAddress(s->addr); |
| 1231 | s->addr = qio_net_listener_get_local_address(s->listener, 0, errp); |
| 1232 | |
| 1233 | skip_listen: |
| 1234 | if (is_waitconnect) { |
| 1235 | tcp_chr_accept_server_sync(chr); |
| 1236 | } else { |
| 1237 | qio_net_listener_set_client_func_full(s->listener, |
| 1238 | tcp_chr_accept, |
| 1239 | chr, NULL, |
| 1240 | chr->gcontext); |
| 1241 | } |
| 1242 | |
| 1243 | return 0; |
| 1244 | } |
| 1245 | |
| 1246 | |
| 1247 | static int qmp_chardev_open_socket_client(Chardev *chr, |
| 1248 | int64_t reconnect_ms, |
| 1249 | Error **errp) |
| 1250 | { |
| 1251 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 1252 | |
| 1253 | if (reconnect_ms > 0) { |
| 1254 | s->reconnect_time_ms = reconnect_ms; |
| 1255 | tcp_chr_connect_client_async(chr); |
| 1256 | return 0; |
| 1257 | } else { |
| 1258 | return tcp_chr_connect_client_sync(chr, errp); |
| 1259 | } |
| 1260 | } |
| 1261 | |
| 1262 | |
| 1263 | static bool qmp_chardev_validate_socket(ChardevSocket *sock, |
| 1264 | SocketAddress *addr, |
| 1265 | Error **errp) |
| 1266 | { |
| 1267 | /* Validate any options which have a dependency on address type */ |
| 1268 | switch (addr->type) { |
| 1269 | case SOCKET_ADDRESS_TYPE_FD: |
| 1270 | if (sock->has_reconnect_ms) { |
| 1271 | error_setg(errp, |
| 1272 | "'reconnect-ms' option is incompatible with " |
| 1273 | "'fd' address type"); |
| 1274 | return false; |
| 1275 | } |
| 1276 | if (sock->tls_creds && |
| 1277 | !(sock->has_server && sock->server)) { |
| 1278 | error_setg(errp, |
| 1279 | "'tls_creds' option is incompatible with " |
| 1280 | "'fd' address type as client"); |
| 1281 | return false; |
| 1282 | } |
| 1283 | break; |
| 1284 | |
| 1285 | case SOCKET_ADDRESS_TYPE_UNIX: |
| 1286 | if (sock->tls_creds) { |
| 1287 | error_setg(errp, |
| 1288 | "'tls_creds' option is incompatible with " |
| 1289 | "'unix' address type"); |
| 1290 | return false; |
| 1291 | } |
| 1292 | break; |
| 1293 | |
| 1294 | case SOCKET_ADDRESS_TYPE_INET: |
| 1295 | break; |
| 1296 | |
| 1297 | case SOCKET_ADDRESS_TYPE_VSOCK: |
| 1298 | if (sock->tls_creds) { |
| 1299 | error_setg(errp, |
| 1300 | "'tls_creds' option is incompatible with " |
| 1301 | "'vsock' address type"); |
| 1302 | return false; |
| 1303 | } |
| 1304 | |
| 1305 | default: |
| 1306 | break; |
| 1307 | } |
| 1308 | |
| 1309 | if (sock->tls_authz && !sock->tls_creds) { |
| 1310 | error_setg(errp, "'tls_authz' option requires 'tls_creds' option"); |
| 1311 | return false; |
| 1312 | } |
| 1313 | |
| 1314 | /* Validate any options which have a dependency on client vs server */ |
| 1315 | if (!sock->has_server || sock->server) { |
| 1316 | if (sock->has_reconnect_ms) { |
| 1317 | error_setg(errp, |
| 1318 | "'reconnect-ms' option is incompatible with " |
| 1319 | "socket in server listen mode"); |
| 1320 | return false; |
| 1321 | } |
| 1322 | } else { |
| 1323 | if (sock->has_websocket && sock->websocket) { |
| 1324 | error_setg(errp, "%s", "Websocket client is not implemented"); |
| 1325 | return false; |
| 1326 | } |
| 1327 | if (sock->has_wait) { |
| 1328 | error_setg(errp, "%s", |
| 1329 | "'wait' option is incompatible with " |
| 1330 | "socket in client connect mode"); |
| 1331 | return false; |
| 1332 | } |
| 1333 | } |
| 1334 | |
| 1335 | return true; |
| 1336 | } |
| 1337 | |
| 1338 | |
| 1339 | static bool tcp_chr_open(Chardev *chr, ChardevBackend *backend, Error **errp) |
| 1340 | { |
| 1341 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 1342 | ChardevSocket *sock = backend->u.socket.data; |
| 1343 | bool do_nodelay = sock->has_nodelay ? sock->nodelay : false; |
| 1344 | bool is_listen = sock->has_server ? sock->server : true; |
| 1345 | bool is_telnet = sock->has_telnet ? sock->telnet : false; |
| 1346 | bool is_tn3270 = sock->has_tn3270 ? sock->tn3270 : false; |
| 1347 | bool is_waitconnect = sock->has_wait ? sock->wait : false; |
| 1348 | bool is_websock = sock->has_websocket ? sock->websocket : false; |
| 1349 | int64_t reconnect_ms = sock->has_reconnect_ms ? sock->reconnect_ms : 0; |
| 1350 | SocketAddress *addr; |
| 1351 | |
| 1352 | s->is_listen = is_listen; |
| 1353 | s->is_telnet = is_telnet; |
| 1354 | s->is_tn3270 = is_tn3270; |
| 1355 | s->is_websock = is_websock; |
| 1356 | s->do_nodelay = do_nodelay; |
| 1357 | if (sock->tls_creds) { |
| 1358 | Object *creds; |
| 1359 | creds = object_resolve_path_component( |
| 1360 | object_get_objects_root(), sock->tls_creds); |
| 1361 | if (!creds) { |
| 1362 | error_setg(errp, "No TLS credentials with id '%s'", |
| 1363 | sock->tls_creds); |
| 1364 | return false; |
| 1365 | } |
| 1366 | s->tls_creds = (QCryptoTLSCreds *) |
| 1367 | object_dynamic_cast(creds, |
| 1368 | TYPE_QCRYPTO_TLS_CREDS); |
| 1369 | if (!s->tls_creds) { |
| 1370 | error_setg(errp, "Object with id '%s' is not TLS credentials", |
| 1371 | sock->tls_creds); |
| 1372 | return false; |
| 1373 | } |
| 1374 | object_ref(OBJECT(s->tls_creds)); |
| 1375 | if (!qcrypto_tls_creds_check_endpoint(s->tls_creds, |
| 1376 | is_listen |
| 1377 | ? QCRYPTO_TLS_CREDS_ENDPOINT_SERVER |
| 1378 | : QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT, |
| 1379 | errp)) { |
| 1380 | return false; |
| 1381 | } |
| 1382 | } |
| 1383 | s->tls_authz = g_strdup(sock->tls_authz); |
| 1384 | |
| 1385 | s->addr = addr = socket_address_flatten(sock->addr); |
| 1386 | |
| 1387 | if (!qmp_chardev_validate_socket(sock, addr, errp)) { |
| 1388 | return false; |
| 1389 | } |
| 1390 | |
| 1391 | qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_RECONNECTABLE); |
| 1392 | #ifndef _WIN32 |
| 1393 | /* TODO SOCKET_ADDRESS_FD where fd has AF_UNIX */ |
| 1394 | if (addr->type == SOCKET_ADDRESS_TYPE_UNIX) { |
| 1395 | qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_FD_PASS); |
| 1396 | } |
| 1397 | #endif |
| 1398 | |
| 1399 | /* |
| 1400 | * In the chardev-change special-case, we shouldn't register a new yank |
| 1401 | * instance, as there already may be one. |
| 1402 | */ |
| 1403 | if (!chr->handover_yank_instance) { |
| 1404 | if (!yank_register_instance(CHARDEV_YANK_INSTANCE(chr->label), errp)) { |
| 1405 | return false; |
| 1406 | } |
| 1407 | } |
| 1408 | s->registered_yank = true; |
| 1409 | |
| 1410 | if (s->is_listen) { |
| 1411 | if (qmp_chardev_open_socket_server(chr, is_telnet || is_tn3270, |
| 1412 | is_waitconnect, errp) < 0) { |
| 1413 | return false; |
| 1414 | } |
| 1415 | } else { |
| 1416 | if (qmp_chardev_open_socket_client(chr, reconnect_ms, errp) < 0) { |
| 1417 | return false; |
| 1418 | } |
| 1419 | } |
| 1420 | |
| 1421 | /* be isn't opened until we get a connection */ |
| 1422 | return true; |
| 1423 | } |
| 1424 | |
| 1425 | static void tcp_chr_parse(QemuOpts *opts, ChardevBackend *backend, Error **errp) |
| 1426 | { |
| 1427 | const char *path = qemu_opt_get(opts, "path"); |
| 1428 | const char *host = qemu_opt_get(opts, "host"); |
| 1429 | const char *port = qemu_opt_get(opts, "port"); |
| 1430 | const char *fd = qemu_opt_get(opts, "fd"); |
| 1431 | #ifdef CONFIG_LINUX |
| 1432 | bool tight = qemu_opt_get_bool(opts, "tight", true); |
| 1433 | bool abstract = qemu_opt_get_bool(opts, "abstract", false); |
| 1434 | #endif |
| 1435 | SocketAddressLegacy *addr; |
| 1436 | ChardevSocket *sock; |
| 1437 | |
| 1438 | if ((!!path + !!fd + !!host) > 1) { |
| 1439 | error_setg(errp, |
| 1440 | "None or one of 'path', 'fd' or 'host' option required."); |
| 1441 | return; |
| 1442 | } |
| 1443 | |
| 1444 | if (host && !port) { |
| 1445 | error_setg(errp, "chardev: socket: no port given"); |
| 1446 | return; |
| 1447 | } |
| 1448 | |
| 1449 | backend->type = CHARDEV_BACKEND_KIND_SOCKET; |
| 1450 | sock = backend->u.socket.data = g_new0(ChardevSocket, 1); |
| 1451 | qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock)); |
| 1452 | |
| 1453 | if (qemu_opt_get(opts, "delay") && qemu_opt_get(opts, "nodelay")) { |
| 1454 | error_setg(errp, "'delay' and 'nodelay' are mutually exclusive"); |
| 1455 | return; |
| 1456 | } |
| 1457 | sock->has_nodelay = |
| 1458 | qemu_opt_get(opts, "delay") || |
| 1459 | qemu_opt_get(opts, "nodelay"); |
| 1460 | sock->nodelay = |
| 1461 | !qemu_opt_get_bool(opts, "delay", true) || |
| 1462 | qemu_opt_get_bool(opts, "nodelay", false); |
| 1463 | |
| 1464 | /* |
| 1465 | * We have different default to QMP for 'server', hence |
| 1466 | * we can't just check for existence of 'server' |
| 1467 | */ |
| 1468 | sock->has_server = true; |
| 1469 | sock->server = qemu_opt_get_bool(opts, "server", false); |
| 1470 | sock->has_telnet = qemu_opt_get(opts, "telnet"); |
| 1471 | sock->telnet = qemu_opt_get_bool(opts, "telnet", false); |
| 1472 | sock->has_tn3270 = qemu_opt_get(opts, "tn3270"); |
| 1473 | sock->tn3270 = qemu_opt_get_bool(opts, "tn3270", false); |
| 1474 | sock->has_websocket = qemu_opt_get(opts, "websocket"); |
| 1475 | sock->websocket = qemu_opt_get_bool(opts, "websocket", false); |
| 1476 | /* |
| 1477 | * We have different default to QMP for 'wait' when 'server' |
| 1478 | * is set, hence we can't just check for existence of 'wait' |
| 1479 | */ |
| 1480 | sock->has_wait = qemu_opt_find(opts, "wait") || sock->server; |
| 1481 | sock->wait = qemu_opt_get_bool(opts, "wait", true); |
| 1482 | sock->has_reconnect_ms = qemu_opt_find(opts, "reconnect-ms"); |
| 1483 | sock->reconnect_ms = qemu_opt_get_number(opts, "reconnect-ms", 0); |
| 1484 | |
| 1485 | sock->tls_creds = g_strdup(qemu_opt_get(opts, "tls-creds")); |
| 1486 | sock->tls_authz = g_strdup(qemu_opt_get(opts, "tls-authz")); |
| 1487 | |
| 1488 | addr = g_new0(SocketAddressLegacy, 1); |
| 1489 | if (path) { |
| 1490 | UnixSocketAddress *q_unix; |
| 1491 | addr->type = SOCKET_ADDRESS_TYPE_UNIX; |
| 1492 | q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1); |
| 1493 | q_unix->path = g_strdup(path); |
| 1494 | #ifdef CONFIG_LINUX |
| 1495 | q_unix->has_tight = true; |
| 1496 | q_unix->tight = tight; |
| 1497 | q_unix->has_abstract = true; |
| 1498 | q_unix->abstract = abstract; |
| 1499 | #endif |
| 1500 | } else if (host) { |
| 1501 | addr->type = SOCKET_ADDRESS_TYPE_INET; |
| 1502 | addr->u.inet.data = g_new(InetSocketAddress, 1); |
| 1503 | *addr->u.inet.data = (InetSocketAddress) { |
| 1504 | .host = g_strdup(host), |
| 1505 | .port = g_strdup(port), |
| 1506 | .has_to = qemu_opt_get(opts, "to"), |
| 1507 | .to = qemu_opt_get_number(opts, "to", 0), |
| 1508 | .has_ipv4 = qemu_opt_get(opts, "ipv4"), |
| 1509 | .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0), |
| 1510 | .has_ipv6 = qemu_opt_get(opts, "ipv6"), |
| 1511 | .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0), |
| 1512 | }; |
| 1513 | } else { |
| 1514 | addr->type = SOCKET_ADDRESS_TYPE_FD; |
| 1515 | addr->u.fd.data = g_new(FdSocketAddress, 1); |
| 1516 | addr->u.fd.data->str = g_strdup(fd); |
| 1517 | } |
| 1518 | sock->addr = addr; |
| 1519 | } |
| 1520 | |
| 1521 | static void |
| 1522 | char_socket_get_addr(Object *obj, Visitor *v, const char *name, |
| 1523 | void *opaque, Error **errp) |
| 1524 | { |
| 1525 | SocketChardev *s = SOCKET_CHARDEV(obj); |
| 1526 | |
| 1527 | if (!s->addr) { |
| 1528 | error_setg(errp, "socket not connected"); |
| 1529 | return; |
| 1530 | } |
| 1531 | visit_type_SocketAddress(v, name, &s->addr, errp); |
| 1532 | } |
| 1533 | |
| 1534 | static bool |
| 1535 | char_socket_get_connected(Object *obj, Error **errp) |
| 1536 | { |
| 1537 | SocketChardev *s = SOCKET_CHARDEV(obj); |
| 1538 | |
| 1539 | return s->state == TCP_CHARDEV_STATE_CONNECTED; |
| 1540 | } |
| 1541 | |
| 1542 | static void tcp_chr_listener_cleanup(Chardev *chr) |
| 1543 | { |
| 1544 | SocketChardev *s = SOCKET_CHARDEV(chr); |
| 1545 | if (s->listener) { |
| 1546 | qio_net_listener_set_client_func_full(s->listener, NULL, NULL, |
| 1547 | NULL, chr->gcontext); |
| 1548 | } |
| 1549 | } |
| 1550 | |
| 1551 | static void char_socket_class_init(ObjectClass *oc, const void *data) |
| 1552 | { |
| 1553 | ChardevClass *cc = CHARDEV_CLASS(oc); |
| 1554 | |
| 1555 | cc->supports_yank = true; |
| 1556 | |
| 1557 | cc->chr_parse = tcp_chr_parse; |
| 1558 | cc->chr_open = tcp_chr_open; |
| 1559 | cc->chr_wait_connected = tcp_chr_wait_connected; |
| 1560 | cc->chr_write = tcp_chr_write; |
| 1561 | cc->chr_sync_read = tcp_chr_sync_read; |
| 1562 | cc->chr_disconnect = tcp_chr_disconnect; |
| 1563 | cc->chr_get_msgfds = tcp_chr_get_msgfds; |
| 1564 | cc->chr_set_msgfds = tcp_chr_set_msgfds; |
| 1565 | cc->chr_add_client = tcp_chr_add_client; |
| 1566 | cc->chr_add_watch = tcp_chr_add_watch; |
| 1567 | cc->chr_update_read_handler = tcp_chr_update_read_handler; |
| 1568 | cc->chr_listener_cleanup = tcp_chr_listener_cleanup; |
| 1569 | cc->chr_get_filename = tcp_chr_get_filename; |
| 1570 | |
| 1571 | object_class_property_add(oc, "addr", "SocketAddress", |
| 1572 | char_socket_get_addr, NULL, |
| 1573 | NULL, NULL); |
| 1574 | |
| 1575 | object_class_property_add_bool(oc, "connected", char_socket_get_connected, |
| 1576 | NULL); |
| 1577 | } |
| 1578 | |
| 1579 | static const TypeInfo char_socket_type_info = { |
| 1580 | .name = TYPE_CHARDEV_SOCKET, |
| 1581 | .parent = TYPE_CHARDEV, |
| 1582 | .instance_size = sizeof(SocketChardev), |
| 1583 | .instance_finalize = char_socket_finalize, |
| 1584 | .class_init = char_socket_class_init, |
| 1585 | }; |
| 1586 | |
| 1587 | static void register_types(void) |
| 1588 | { |
| 1589 | type_register_static(&char_socket_type_info); |
| 1590 | } |
| 1591 | |
| 1592 | type_init(register_types); |