4 * Copyright (c) 2003-2008 Fabrice Bellard
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
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/net-listener.h"
30 #include "qemu/error-report.h"
31 #include "qemu/option.h"
32 #include "qapi/error.h"
33 #include "qapi/clone-visitor.h"
34 #include "qapi/qapi-visit-sockets.h"
36 #include "chardev/char-io.h"
38 /***********************************************************/
41 #define TCP_MAX_FDS 16
45 QIOChannel
*ioc
; /* Client I/O channel */
46 QIOChannelSocket
*sioc
; /* Client master channel */
47 QIONetListener
*listener
;
49 QCryptoTLSCreds
*tls_creds
;
55 size_t read_msgfds_num
;
57 size_t write_msgfds_num
;
64 GSource
*reconnect_timer
;
65 int64_t reconnect_time
;
66 bool connect_err_reported
;
69 #define SOCKET_CHARDEV(obj) \
70 OBJECT_CHECK(SocketChardev, (obj), TYPE_CHARDEV_SOCKET)
72 static gboolean
socket_reconnect_timeout(gpointer opaque
);
74 static void tcp_chr_reconn_timer_cancel(SocketChardev
*s
)
76 if (s
->reconnect_timer
) {
77 g_source_destroy(s
->reconnect_timer
);
78 g_source_unref(s
->reconnect_timer
);
79 s
->reconnect_timer
= NULL
;
83 static void qemu_chr_socket_restart_timer(Chardev
*chr
)
85 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
88 assert(s
->connected
== 0);
89 name
= g_strdup_printf("chardev-socket-reconnect-%s", chr
->label
);
90 s
->reconnect_timer
= qemu_chr_timeout_add_ms(chr
,
91 s
->reconnect_time
* 1000,
92 socket_reconnect_timeout
,
94 g_source_set_name(s
->reconnect_timer
, name
);
98 static void check_report_connect_error(Chardev
*chr
,
101 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
103 if (!s
->connect_err_reported
) {
104 error_report("Unable to connect character device %s: %s",
105 chr
->label
, error_get_pretty(err
));
106 s
->connect_err_reported
= true;
108 qemu_chr_socket_restart_timer(chr
);
111 static void tcp_chr_accept(QIONetListener
*listener
,
112 QIOChannelSocket
*cioc
,
115 static int tcp_chr_read_poll(void *opaque
);
116 static void tcp_chr_disconnect(Chardev
*chr
);
118 /* Called with chr_write_lock held. */
119 static int tcp_chr_write(Chardev
*chr
, const uint8_t *buf
, int len
)
121 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
124 int ret
= io_channel_send_full(s
->ioc
, buf
, len
,
126 s
->write_msgfds_num
);
128 /* free the written msgfds, no matter what */
129 if (s
->write_msgfds_num
) {
130 g_free(s
->write_msgfds
);
132 s
->write_msgfds_num
= 0;
135 if (ret
< 0 && errno
!= EAGAIN
) {
136 if (tcp_chr_read_poll(chr
) <= 0) {
137 tcp_chr_disconnect(chr
);
139 } /* else let the read handler finish it properly */
144 /* XXX: indicate an error ? */
149 static int tcp_chr_read_poll(void *opaque
)
151 Chardev
*chr
= CHARDEV(opaque
);
152 SocketChardev
*s
= SOCKET_CHARDEV(opaque
);
156 s
->max_size
= qemu_chr_be_can_write(chr
);
160 static void tcp_chr_process_IAC_bytes(Chardev
*chr
,
162 uint8_t *buf
, int *size
)
164 /* Handle any telnet or tn3270 client's basic IAC options.
165 * For telnet options, it satisfies char by char mode with no echo.
166 * For tn3270 options, it satisfies binary mode with EOR.
167 * All IAC options will be removed from the buf and the do_opt
168 * pointer will be used to track the state of the width of the
171 * RFC854: "All TELNET commands consist of at least a two byte sequence.
172 * The commands dealing with option negotiation are three byte sequences,
173 * the third byte being the code for the option referenced."
174 * "IAC BREAK", "IAC IP", "IAC NOP" and the double IAC are two bytes.
175 * "IAC SB", "IAC SE" and "IAC EOR" are saved to split up data boundary
177 * NOP, Break and Interrupt Process(IP) might be encountered during a TN3270
178 * session, and NOP and IP need to be done later.
184 for (i
= 0; i
< *size
; i
++) {
185 if (s
->do_telnetopt
> 1) {
186 if ((unsigned char)buf
[i
] == IAC
&& s
->do_telnetopt
== 2) {
187 /* Double IAC means send an IAC */
194 if ((unsigned char)buf
[i
] == IAC_BREAK
195 && s
->do_telnetopt
== 2) {
196 /* Handle IAC break commands by sending a serial break */
197 qemu_chr_be_event(chr
, CHR_EVENT_BREAK
);
199 } else if (s
->is_tn3270
&& ((unsigned char)buf
[i
] == IAC_EOR
200 || (unsigned char)buf
[i
] == IAC_SB
201 || (unsigned char)buf
[i
] == IAC_SE
)
202 && s
->do_telnetopt
== 2) {
206 } else if (s
->is_tn3270
&& ((unsigned char)buf
[i
] == IAC_IP
207 || (unsigned char)buf
[i
] == IAC_NOP
)
208 && s
->do_telnetopt
== 2) {
209 /* TODO: IP and NOP need to be implemented later. */
214 if (s
->do_telnetopt
>= 4) {
218 if ((unsigned char)buf
[i
] == IAC
) {
231 static int tcp_get_msgfds(Chardev
*chr
, int *fds
, int num
)
233 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
235 int to_copy
= (s
->read_msgfds_num
< num
) ? s
->read_msgfds_num
: num
;
237 assert(num
<= TCP_MAX_FDS
);
242 memcpy(fds
, s
->read_msgfds
, to_copy
* sizeof(int));
244 /* Close unused fds */
245 for (i
= to_copy
; i
< s
->read_msgfds_num
; i
++) {
246 close(s
->read_msgfds
[i
]);
249 g_free(s
->read_msgfds
);
251 s
->read_msgfds_num
= 0;
257 static int tcp_set_msgfds(Chardev
*chr
, int *fds
, int num
)
259 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
261 /* clear old pending fd array */
262 g_free(s
->write_msgfds
);
263 s
->write_msgfds
= NULL
;
264 s
->write_msgfds_num
= 0;
267 !qio_channel_has_feature(s
->ioc
,
268 QIO_CHANNEL_FEATURE_FD_PASS
)) {
273 s
->write_msgfds
= g_new(int, num
);
274 memcpy(s
->write_msgfds
, fds
, num
* sizeof(int));
277 s
->write_msgfds_num
= num
;
282 static ssize_t
tcp_chr_recv(Chardev
*chr
, char *buf
, size_t len
)
284 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
285 struct iovec iov
= { .iov_base
= buf
, .iov_len
= len
};
289 size_t msgfds_num
= 0;
291 if (qio_channel_has_feature(s
->ioc
, QIO_CHANNEL_FEATURE_FD_PASS
)) {
292 ret
= qio_channel_readv_full(s
->ioc
, &iov
, 1,
293 &msgfds
, &msgfds_num
,
296 ret
= qio_channel_readv_full(s
->ioc
, &iov
, 1,
301 if (ret
== QIO_CHANNEL_ERR_BLOCK
) {
304 } else if (ret
== -1) {
309 /* close and clean read_msgfds */
310 for (i
= 0; i
< s
->read_msgfds_num
; i
++) {
311 close(s
->read_msgfds
[i
]);
314 if (s
->read_msgfds_num
) {
315 g_free(s
->read_msgfds
);
318 s
->read_msgfds
= msgfds
;
319 s
->read_msgfds_num
= msgfds_num
;
322 for (i
= 0; i
< s
->read_msgfds_num
; i
++) {
323 int fd
= s
->read_msgfds
[i
];
328 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
331 #ifndef MSG_CMSG_CLOEXEC
332 qemu_set_cloexec(fd
);
339 static GSource
*tcp_chr_add_watch(Chardev
*chr
, GIOCondition cond
)
341 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
342 return qio_channel_create_watch(s
->ioc
, cond
);
345 static void tcp_chr_free_connection(Chardev
*chr
)
347 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
350 if (s
->read_msgfds_num
) {
351 for (i
= 0; i
< s
->read_msgfds_num
; i
++) {
352 close(s
->read_msgfds
[i
]);
354 g_free(s
->read_msgfds
);
355 s
->read_msgfds
= NULL
;
356 s
->read_msgfds_num
= 0;
359 if (s
->hup_source
!= NULL
) {
360 g_source_destroy(s
->hup_source
);
361 g_source_unref(s
->hup_source
);
362 s
->hup_source
= NULL
;
365 tcp_set_msgfds(chr
, NULL
, 0);
366 remove_fd_in_watch(chr
);
367 object_unref(OBJECT(s
->sioc
));
369 object_unref(OBJECT(s
->ioc
));
371 g_free(chr
->filename
);
372 chr
->filename
= NULL
;
376 static char *SocketAddress_to_str(const char *prefix
, SocketAddress
*addr
,
377 bool is_listen
, bool is_telnet
)
379 switch (addr
->type
) {
380 case SOCKET_ADDRESS_TYPE_INET
:
381 return g_strdup_printf("%s%s:%s:%s%s", prefix
,
382 is_telnet
? "telnet" : "tcp",
385 is_listen
? ",server" : "");
387 case SOCKET_ADDRESS_TYPE_UNIX
:
388 return g_strdup_printf("%sunix:%s%s", prefix
,
390 is_listen
? ",server" : "");
392 case SOCKET_ADDRESS_TYPE_FD
:
393 return g_strdup_printf("%sfd:%s%s", prefix
, addr
->u
.fd
.str
,
394 is_listen
? ",server" : "");
396 case SOCKET_ADDRESS_TYPE_VSOCK
:
397 return g_strdup_printf("%svsock:%s:%s", prefix
,
405 static void update_disconnected_filename(SocketChardev
*s
)
407 Chardev
*chr
= CHARDEV(s
);
409 g_free(chr
->filename
);
410 chr
->filename
= SocketAddress_to_str("disconnected:", s
->addr
,
411 s
->is_listen
, s
->is_telnet
);
414 /* NB may be called even if tcp_chr_connect has not been
415 * reached, due to TLS or telnet initialization failure,
416 * so can *not* assume s->connected == true
418 static void tcp_chr_disconnect(Chardev
*chr
)
420 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
421 bool emit_close
= s
->connected
;
423 tcp_chr_free_connection(chr
);
426 qio_net_listener_set_client_func(s
->listener
, tcp_chr_accept
,
429 update_disconnected_filename(s
);
431 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
433 if (s
->reconnect_time
) {
434 qemu_chr_socket_restart_timer(chr
);
438 static gboolean
tcp_chr_read(QIOChannel
*chan
, GIOCondition cond
, void *opaque
)
440 Chardev
*chr
= CHARDEV(opaque
);
441 SocketChardev
*s
= SOCKET_CHARDEV(opaque
);
442 uint8_t buf
[CHR_READ_BUF_LEN
];
445 if (!s
->connected
|| s
->max_size
<= 0) {
449 if (len
> s
->max_size
) {
452 size
= tcp_chr_recv(chr
, (void *)buf
, len
);
453 if (size
== 0 || size
== -1) {
454 /* connection closed */
455 tcp_chr_disconnect(chr
);
456 } else if (size
> 0) {
457 if (s
->do_telnetopt
) {
458 tcp_chr_process_IAC_bytes(chr
, s
, buf
, &size
);
461 qemu_chr_be_write(chr
, buf
, size
);
468 static gboolean
tcp_chr_hup(QIOChannel
*channel
,
472 Chardev
*chr
= CHARDEV(opaque
);
473 tcp_chr_disconnect(chr
);
474 return G_SOURCE_REMOVE
;
477 static int tcp_chr_sync_read(Chardev
*chr
, const uint8_t *buf
, int len
)
479 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
486 qio_channel_set_blocking(s
->ioc
, true, NULL
);
487 size
= tcp_chr_recv(chr
, (void *) buf
, len
);
488 qio_channel_set_blocking(s
->ioc
, false, NULL
);
490 /* connection closed */
491 tcp_chr_disconnect(chr
);
497 static char *sockaddr_to_str(struct sockaddr_storage
*ss
, socklen_t ss_len
,
498 struct sockaddr_storage
*ps
, socklen_t ps_len
,
499 bool is_listen
, bool is_telnet
)
501 char shost
[NI_MAXHOST
], sserv
[NI_MAXSERV
];
502 char phost
[NI_MAXHOST
], pserv
[NI_MAXSERV
];
503 const char *left
= "", *right
= "";
505 switch (ss
->ss_family
) {
508 return g_strdup_printf("unix:%s%s",
509 ((struct sockaddr_un
*)(ss
))->sun_path
,
510 is_listen
? ",server" : "");
517 getnameinfo((struct sockaddr
*) ss
, ss_len
, shost
, sizeof(shost
),
518 sserv
, sizeof(sserv
), NI_NUMERICHOST
| NI_NUMERICSERV
);
519 getnameinfo((struct sockaddr
*) ps
, ps_len
, phost
, sizeof(phost
),
520 pserv
, sizeof(pserv
), NI_NUMERICHOST
| NI_NUMERICSERV
);
521 return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s",
522 is_telnet
? "telnet" : "tcp",
523 left
, shost
, right
, sserv
,
524 is_listen
? ",server" : "",
525 left
, phost
, right
, pserv
);
528 return g_strdup_printf("unknown");
532 static void tcp_chr_connect(void *opaque
)
534 Chardev
*chr
= CHARDEV(opaque
);
535 SocketChardev
*s
= SOCKET_CHARDEV(opaque
);
537 g_free(chr
->filename
);
538 chr
->filename
= sockaddr_to_str(
539 &s
->sioc
->localAddr
, s
->sioc
->localAddrLen
,
540 &s
->sioc
->remoteAddr
, s
->sioc
->remoteAddrLen
,
541 s
->is_listen
, s
->is_telnet
);
545 chr
->gsource
= io_add_watch_poll(chr
, s
->ioc
,
551 s
->hup_source
= qio_channel_create_watch(s
->ioc
, G_IO_HUP
);
552 g_source_set_callback(s
->hup_source
, (GSourceFunc
)tcp_chr_hup
,
554 g_source_attach(s
->hup_source
, chr
->gcontext
);
556 qemu_chr_be_event(chr
, CHR_EVENT_OPENED
);
559 static void tcp_chr_update_read_handler(Chardev
*chr
)
561 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
567 remove_fd_in_watch(chr
);
569 chr
->gsource
= io_add_watch_poll(chr
, s
->ioc
,
580 } TCPChardevTelnetInit
;
582 static gboolean
tcp_chr_telnet_init_io(QIOChannel
*ioc
,
583 GIOCondition cond G_GNUC_UNUSED
,
586 TCPChardevTelnetInit
*init
= user_data
;
589 ret
= qio_channel_write(ioc
, init
->buf
, init
->buflen
, NULL
);
591 if (ret
== QIO_CHANNEL_ERR_BLOCK
) {
594 tcp_chr_disconnect(init
->chr
);
600 if (init
->buflen
== 0) {
601 tcp_chr_connect(init
->chr
);
605 memmove(init
->buf
, init
->buf
+ ret
, init
->buflen
);
610 static void tcp_chr_telnet_init(Chardev
*chr
)
612 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
613 TCPChardevTelnetInit
*init
= g_new0(TCPChardevTelnetInit
, 1);
616 #define IACSET(x, a, b, c) \
626 /* Prep the telnet negotion to put telnet in binary,
627 * no echo, single char mode */
628 IACSET(init
->buf
, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
629 IACSET(init
->buf
, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
630 IACSET(init
->buf
, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
631 IACSET(init
->buf
, 0xff, 0xfd, 0x00); /* IAC DO Binary */
634 /* Prep the TN3270 negotion based on RFC1576 */
635 IACSET(init
->buf
, 0xff, 0xfd, 0x19); /* IAC DO EOR */
636 IACSET(init
->buf
, 0xff, 0xfb, 0x19); /* IAC WILL EOR */
637 IACSET(init
->buf
, 0xff, 0xfd, 0x00); /* IAC DO BINARY */
638 IACSET(init
->buf
, 0xff, 0xfb, 0x00); /* IAC WILL BINARY */
639 IACSET(init
->buf
, 0xff, 0xfd, 0x18); /* IAC DO TERMINAL TYPE */
640 IACSET(init
->buf
, 0xff, 0xfa, 0x18); /* IAC SB TERMINAL TYPE */
641 IACSET(init
->buf
, 0x01, 0xff, 0xf0); /* SEND IAC SE */
646 qio_channel_add_watch(
648 tcp_chr_telnet_init_io
,
653 static void tcp_chr_tls_handshake(QIOTask
*task
,
656 Chardev
*chr
= user_data
;
657 SocketChardev
*s
= user_data
;
659 if (qio_task_propagate_error(task
, NULL
)) {
660 tcp_chr_disconnect(chr
);
662 /* tn3270 does not support TLS yet */
663 if (s
->do_telnetopt
&& !s
->is_tn3270
) {
664 tcp_chr_telnet_init(chr
);
666 tcp_chr_connect(chr
);
672 static void tcp_chr_tls_init(Chardev
*chr
)
674 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
680 tioc
= qio_channel_tls_new_server(
681 s
->ioc
, s
->tls_creds
,
682 NULL
, /* XXX Use an ACL */
685 tioc
= qio_channel_tls_new_client(
686 s
->ioc
, s
->tls_creds
,
687 s
->addr
->u
.inet
.host
,
692 tcp_chr_disconnect(chr
);
695 name
= g_strdup_printf("chardev-tls-%s-%s",
696 s
->is_listen
? "server" : "client",
698 qio_channel_set_name(QIO_CHANNEL(tioc
), name
);
700 object_unref(OBJECT(s
->ioc
));
701 s
->ioc
= QIO_CHANNEL(tioc
);
703 qio_channel_tls_handshake(tioc
,
704 tcp_chr_tls_handshake
,
711 static void tcp_chr_set_client_ioc_name(Chardev
*chr
,
712 QIOChannelSocket
*sioc
)
714 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
716 name
= g_strdup_printf("chardev-tcp-%s-%s",
717 s
->is_listen
? "server" : "client",
719 qio_channel_set_name(QIO_CHANNEL(sioc
), name
);
724 static int tcp_chr_new_client(Chardev
*chr
, QIOChannelSocket
*sioc
)
726 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
728 if (s
->ioc
!= NULL
) {
732 s
->ioc
= QIO_CHANNEL(sioc
);
733 object_ref(OBJECT(sioc
));
735 object_ref(OBJECT(sioc
));
737 qio_channel_set_blocking(s
->ioc
, false, NULL
);
740 qio_channel_set_delay(s
->ioc
, false);
743 qio_net_listener_set_client_func(s
->listener
, NULL
, NULL
, NULL
);
747 tcp_chr_tls_init(chr
);
749 if (s
->do_telnetopt
) {
750 tcp_chr_telnet_init(chr
);
752 tcp_chr_connect(chr
);
760 static int tcp_chr_add_client(Chardev
*chr
, int fd
)
763 QIOChannelSocket
*sioc
;
765 sioc
= qio_channel_socket_new_fd(fd
, NULL
);
769 tcp_chr_set_client_ioc_name(chr
, sioc
);
770 ret
= tcp_chr_new_client(chr
, sioc
);
771 object_unref(OBJECT(sioc
));
775 static void tcp_chr_accept(QIONetListener
*listener
,
776 QIOChannelSocket
*cioc
,
779 Chardev
*chr
= CHARDEV(opaque
);
781 tcp_chr_set_client_ioc_name(chr
, cioc
);
782 tcp_chr_new_client(chr
, cioc
);
785 static int tcp_chr_wait_connected(Chardev
*chr
, Error
**errp
)
787 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
788 QIOChannelSocket
*sioc
;
790 /* It can't wait on s->connected, since it is set asynchronously
791 * in TLS and telnet cases, only wait for an accepted socket */
794 info_report("QEMU waiting for connection on: %s",
796 sioc
= qio_net_listener_wait_client(s
->listener
);
797 tcp_chr_set_client_ioc_name(chr
, sioc
);
798 tcp_chr_new_client(chr
, sioc
);
799 object_unref(OBJECT(sioc
));
801 sioc
= qio_channel_socket_new();
802 tcp_chr_set_client_ioc_name(chr
, sioc
);
803 if (qio_channel_socket_connect_sync(sioc
, s
->addr
, errp
) < 0) {
804 object_unref(OBJECT(sioc
));
807 tcp_chr_new_client(chr
, sioc
);
808 object_unref(OBJECT(sioc
));
815 static void char_socket_finalize(Object
*obj
)
817 Chardev
*chr
= CHARDEV(obj
);
818 SocketChardev
*s
= SOCKET_CHARDEV(obj
);
820 tcp_chr_free_connection(chr
);
821 tcp_chr_reconn_timer_cancel(s
);
822 qapi_free_SocketAddress(s
->addr
);
824 qio_net_listener_set_client_func(s
->listener
, NULL
, NULL
, NULL
);
825 object_unref(OBJECT(s
->listener
));
828 object_unref(OBJECT(s
->tls_creds
));
831 qemu_chr_be_event(chr
, CHR_EVENT_CLOSED
);
834 static void qemu_chr_socket_connected(QIOTask
*task
, void *opaque
)
836 QIOChannelSocket
*sioc
= QIO_CHANNEL_SOCKET(qio_task_get_source(task
));
837 Chardev
*chr
= CHARDEV(opaque
);
838 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
841 if (qio_task_propagate_error(task
, &err
)) {
842 check_report_connect_error(chr
, err
);
847 s
->connect_err_reported
= false;
848 tcp_chr_new_client(chr
, sioc
);
851 object_unref(OBJECT(sioc
));
854 static gboolean
socket_reconnect_timeout(gpointer opaque
)
856 Chardev
*chr
= CHARDEV(opaque
);
857 SocketChardev
*s
= SOCKET_CHARDEV(opaque
);
858 QIOChannelSocket
*sioc
;
860 g_source_unref(s
->reconnect_timer
);
861 s
->reconnect_timer
= NULL
;
867 sioc
= qio_channel_socket_new();
868 tcp_chr_set_client_ioc_name(chr
, sioc
);
869 qio_channel_socket_connect_async(sioc
, s
->addr
,
870 qemu_chr_socket_connected
,
876 static void qmp_chardev_open_socket(Chardev
*chr
,
877 ChardevBackend
*backend
,
881 SocketChardev
*s
= SOCKET_CHARDEV(chr
);
882 ChardevSocket
*sock
= backend
->u
.socket
.data
;
883 bool do_nodelay
= sock
->has_nodelay
? sock
->nodelay
: false;
884 bool is_listen
= sock
->has_server
? sock
->server
: true;
885 bool is_telnet
= sock
->has_telnet
? sock
->telnet
: false;
886 bool is_tn3270
= sock
->has_tn3270
? sock
->tn3270
: false;
887 bool is_waitconnect
= sock
->has_wait
? sock
->wait
: false;
888 int64_t reconnect
= sock
->has_reconnect
? sock
->reconnect
: 0;
889 QIOChannelSocket
*sioc
= NULL
;
892 s
->is_listen
= is_listen
;
893 s
->is_telnet
= is_telnet
;
894 s
->is_tn3270
= is_tn3270
;
895 s
->do_nodelay
= do_nodelay
;
896 if (sock
->tls_creds
) {
898 creds
= object_resolve_path_component(
899 object_get_objects_root(), sock
->tls_creds
);
901 error_setg(errp
, "No TLS credentials with id '%s'",
905 s
->tls_creds
= (QCryptoTLSCreds
*)
906 object_dynamic_cast(creds
,
907 TYPE_QCRYPTO_TLS_CREDS
);
909 error_setg(errp
, "Object with id '%s' is not TLS credentials",
913 object_ref(OBJECT(s
->tls_creds
));
915 if (s
->tls_creds
->endpoint
!= QCRYPTO_TLS_CREDS_ENDPOINT_SERVER
) {
916 error_setg(errp
, "%s",
917 "Expected TLS credentials for server endpoint");
921 if (s
->tls_creds
->endpoint
!= QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT
) {
922 error_setg(errp
, "%s",
923 "Expected TLS credentials for client endpoint");
929 s
->addr
= addr
= socket_address_flatten(sock
->addr
);
931 qemu_chr_set_feature(chr
, QEMU_CHAR_FEATURE_RECONNECTABLE
);
932 /* TODO SOCKET_ADDRESS_FD where fd has AF_UNIX */
933 if (addr
->type
== SOCKET_ADDRESS_TYPE_UNIX
) {
934 qemu_chr_set_feature(chr
, QEMU_CHAR_FEATURE_FD_PASS
);
937 /* be isn't opened until we get a connection */
940 update_disconnected_filename(s
);
943 if (is_telnet
|| is_tn3270
) {
946 } else if (reconnect
> 0) {
947 s
->reconnect_time
= reconnect
;
950 if (s
->reconnect_time
) {
951 sioc
= qio_channel_socket_new();
952 tcp_chr_set_client_ioc_name(chr
, sioc
);
953 qio_channel_socket_connect_async(sioc
, s
->addr
,
954 qemu_chr_socket_connected
,
959 s
->listener
= qio_net_listener_new();
961 name
= g_strdup_printf("chardev-tcp-listener-%s", chr
->label
);
962 qio_net_listener_set_name(s
->listener
, name
);
965 if (qio_net_listener_open_sync(s
->listener
, s
->addr
, errp
) < 0) {
966 object_unref(OBJECT(s
->listener
));
971 qapi_free_SocketAddress(s
->addr
);
972 s
->addr
= socket_local_address(s
->listener
->sioc
[0]->fd
, errp
);
973 update_disconnected_filename(s
);
975 if (is_waitconnect
&&
976 qemu_chr_wait_connected(chr
, errp
) < 0) {
980 qio_net_listener_set_client_func(s
->listener
, tcp_chr_accept
,
983 } else if (qemu_chr_wait_connected(chr
, errp
) < 0) {
992 object_unref(OBJECT(sioc
));
996 static void qemu_chr_parse_socket(QemuOpts
*opts
, ChardevBackend
*backend
,
999 bool is_listen
= qemu_opt_get_bool(opts
, "server", false);
1000 bool is_waitconnect
= is_listen
&& qemu_opt_get_bool(opts
, "wait", true);
1001 bool is_telnet
= qemu_opt_get_bool(opts
, "telnet", false);
1002 bool is_tn3270
= qemu_opt_get_bool(opts
, "tn3270", false);
1003 bool do_nodelay
= !qemu_opt_get_bool(opts
, "delay", true);
1004 int64_t reconnect
= qemu_opt_get_number(opts
, "reconnect", 0);
1005 const char *path
= qemu_opt_get(opts
, "path");
1006 const char *host
= qemu_opt_get(opts
, "host");
1007 const char *port
= qemu_opt_get(opts
, "port");
1008 const char *tls_creds
= qemu_opt_get(opts
, "tls-creds");
1009 SocketAddressLegacy
*addr
;
1010 ChardevSocket
*sock
;
1012 backend
->type
= CHARDEV_BACKEND_KIND_SOCKET
;
1015 error_setg(errp
, "chardev: socket: no host given");
1019 error_setg(errp
, "chardev: socket: no port given");
1024 error_setg(errp
, "TLS can only be used over TCP socket");
1029 sock
= backend
->u
.socket
.data
= g_new0(ChardevSocket
, 1);
1030 qemu_chr_parse_common(opts
, qapi_ChardevSocket_base(sock
));
1032 sock
->has_nodelay
= true;
1033 sock
->nodelay
= do_nodelay
;
1034 sock
->has_server
= true;
1035 sock
->server
= is_listen
;
1036 sock
->has_telnet
= true;
1037 sock
->telnet
= is_telnet
;
1038 sock
->has_tn3270
= true;
1039 sock
->tn3270
= is_tn3270
;
1040 sock
->has_wait
= true;
1041 sock
->wait
= is_waitconnect
;
1042 sock
->has_reconnect
= true;
1043 sock
->reconnect
= reconnect
;
1044 sock
->tls_creds
= g_strdup(tls_creds
);
1046 addr
= g_new0(SocketAddressLegacy
, 1);
1048 UnixSocketAddress
*q_unix
;
1049 addr
->type
= SOCKET_ADDRESS_LEGACY_KIND_UNIX
;
1050 q_unix
= addr
->u
.q_unix
.data
= g_new0(UnixSocketAddress
, 1);
1051 q_unix
->path
= g_strdup(path
);
1053 addr
->type
= SOCKET_ADDRESS_LEGACY_KIND_INET
;
1054 addr
->u
.inet
.data
= g_new(InetSocketAddress
, 1);
1055 *addr
->u
.inet
.data
= (InetSocketAddress
) {
1056 .host
= g_strdup(host
),
1057 .port
= g_strdup(port
),
1058 .has_to
= qemu_opt_get(opts
, "to"),
1059 .to
= qemu_opt_get_number(opts
, "to", 0),
1060 .has_ipv4
= qemu_opt_get(opts
, "ipv4"),
1061 .ipv4
= qemu_opt_get_bool(opts
, "ipv4", 0),
1062 .has_ipv6
= qemu_opt_get(opts
, "ipv6"),
1063 .ipv6
= qemu_opt_get_bool(opts
, "ipv6", 0),
1070 char_socket_get_addr(Object
*obj
, Visitor
*v
, const char *name
,
1071 void *opaque
, Error
**errp
)
1073 SocketChardev
*s
= SOCKET_CHARDEV(obj
);
1075 visit_type_SocketAddress(v
, name
, &s
->addr
, errp
);
1079 char_socket_get_connected(Object
*obj
, Error
**errp
)
1081 SocketChardev
*s
= SOCKET_CHARDEV(obj
);
1083 return s
->connected
;
1086 static void char_socket_class_init(ObjectClass
*oc
, void *data
)
1088 ChardevClass
*cc
= CHARDEV_CLASS(oc
);
1090 cc
->parse
= qemu_chr_parse_socket
;
1091 cc
->open
= qmp_chardev_open_socket
;
1092 cc
->chr_wait_connected
= tcp_chr_wait_connected
;
1093 cc
->chr_write
= tcp_chr_write
;
1094 cc
->chr_sync_read
= tcp_chr_sync_read
;
1095 cc
->chr_disconnect
= tcp_chr_disconnect
;
1096 cc
->get_msgfds
= tcp_get_msgfds
;
1097 cc
->set_msgfds
= tcp_set_msgfds
;
1098 cc
->chr_add_client
= tcp_chr_add_client
;
1099 cc
->chr_add_watch
= tcp_chr_add_watch
;
1100 cc
->chr_update_read_handler
= tcp_chr_update_read_handler
;
1102 object_class_property_add(oc
, "addr", "SocketAddress",
1103 char_socket_get_addr
, NULL
,
1104 NULL
, NULL
, &error_abort
);
1106 object_class_property_add_bool(oc
, "connected", char_socket_get_connected
,
1107 NULL
, &error_abort
);
1110 static const TypeInfo char_socket_type_info
= {
1111 .name
= TYPE_CHARDEV_SOCKET
,
1112 .parent
= TYPE_CHARDEV
,
1113 .instance_size
= sizeof(SocketChardev
),
1114 .instance_finalize
= char_socket_finalize
,
1115 .class_init
= char_socket_class_init
,
1118 static void register_types(void)
1120 type_register_static(&char_socket_type_info
);
1123 type_init(register_types
);