2 * QEMU I/O channels driver websockets
4 * Copyright (c) 2015 Red Hat, Inc.
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
21 #include "qemu/osdep.h"
22 #include "qapi/error.h"
23 #include "io/channel-websock.h"
24 #include "crypto/hash.h"
28 /* Max amount to allow in rawinput/rawoutput buffers */
29 #define QIO_CHANNEL_WEBSOCK_MAX_BUFFER 8192
31 #define QIO_CHANNEL_WEBSOCK_CLIENT_KEY_LEN 24
32 #define QIO_CHANNEL_WEBSOCK_GUID "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"
33 #define QIO_CHANNEL_WEBSOCK_GUID_LEN strlen(QIO_CHANNEL_WEBSOCK_GUID)
35 #define QIO_CHANNEL_WEBSOCK_HEADER_PROTOCOL "Sec-WebSocket-Protocol"
36 #define QIO_CHANNEL_WEBSOCK_HEADER_VERSION "Sec-WebSocket-Version"
37 #define QIO_CHANNEL_WEBSOCK_HEADER_KEY "Sec-WebSocket-Key"
39 #define QIO_CHANNEL_WEBSOCK_PROTOCOL_BINARY "binary"
41 #define QIO_CHANNEL_WEBSOCK_HANDSHAKE_RESPONSE \
42 "HTTP/1.1 101 Switching Protocols\r\n" \
43 "Upgrade: websocket\r\n" \
44 "Connection: Upgrade\r\n" \
45 "Sec-WebSocket-Accept: %s\r\n" \
46 "Sec-WebSocket-Protocol: binary\r\n" \
48 #define QIO_CHANNEL_WEBSOCK_HANDSHAKE_DELIM "\r\n"
49 #define QIO_CHANNEL_WEBSOCK_HANDSHAKE_END "\r\n\r\n"
50 #define QIO_CHANNEL_WEBSOCK_SUPPORTED_VERSION "13"
52 /* The websockets packet header is variable length
53 * depending on the size of the payload... */
55 /* ...length when using 7-bit payload length */
56 #define QIO_CHANNEL_WEBSOCK_HEADER_LEN_7_BIT 6
57 /* ...length when using 16-bit payload length */
58 #define QIO_CHANNEL_WEBSOCK_HEADER_LEN_16_BIT 8
59 /* ...length when using 64-bit payload length */
60 #define QIO_CHANNEL_WEBSOCK_HEADER_LEN_64_BIT 14
62 /* Length of the optional data mask field in header */
63 #define QIO_CHANNEL_WEBSOCK_HEADER_LEN_MASK 4
65 /* Maximum length that can fit in 7-bit payload size */
66 #define QIO_CHANNEL_WEBSOCK_PAYLOAD_LEN_THRESHOLD_7_BIT 126
67 /* Maximum length that can fit in 16-bit payload size */
68 #define QIO_CHANNEL_WEBSOCK_PAYLOAD_LEN_THRESHOLD_16_BIT 65536
70 /* Magic 7-bit length to indicate use of 16-bit payload length */
71 #define QIO_CHANNEL_WEBSOCK_PAYLOAD_LEN_MAGIC_16_BIT 126
72 /* Magic 7-bit length to indicate use of 64-bit payload length */
73 #define QIO_CHANNEL_WEBSOCK_PAYLOAD_LEN_MAGIC_64_BIT 127
75 /* Bitmasks & shifts for accessing header fields */
76 #define QIO_CHANNEL_WEBSOCK_HEADER_FIELD_FIN 0x80
77 #define QIO_CHANNEL_WEBSOCK_HEADER_FIELD_OPCODE 0x0f
78 #define QIO_CHANNEL_WEBSOCK_HEADER_FIELD_HAS_MASK 0x80
79 #define QIO_CHANNEL_WEBSOCK_HEADER_FIELD_PAYLOAD_LEN 0x7f
80 #define QIO_CHANNEL_WEBSOCK_HEADER_SHIFT_FIN 7
81 #define QIO_CHANNEL_WEBSOCK_HEADER_SHIFT_HAS_MASK 7
83 typedef struct QIOChannelWebsockHeader QIOChannelWebsockHeader;
85 struct QEMU_PACKED QIOChannelWebsockHeader {
91 QIOChannelWebsockMask m16;
95 QIOChannelWebsockMask m64;
97 QIOChannelWebsockMask m;
102 QIO_CHANNEL_WEBSOCK_OPCODE_CONTINUATION = 0x0,
103 QIO_CHANNEL_WEBSOCK_OPCODE_TEXT_FRAME = 0x1,
104 QIO_CHANNEL_WEBSOCK_OPCODE_BINARY_FRAME = 0x2,
105 QIO_CHANNEL_WEBSOCK_OPCODE_CLOSE = 0x8,
106 QIO_CHANNEL_WEBSOCK_OPCODE_PING = 0x9,
107 QIO_CHANNEL_WEBSOCK_OPCODE_PONG = 0xA
110 static char *qio_channel_websock_handshake_entry(const char *handshake,
111 size_t handshake_len,
114 char *begin, *end, *ret = NULL;
115 char *line = g_strdup_printf("%s%s: ",
116 QIO_CHANNEL_WEBSOCK_HANDSHAKE_DELIM,
118 begin = g_strstr_len(handshake, handshake_len, line);
120 begin += strlen(line);
121 end = g_strstr_len(begin, handshake_len - (begin - handshake),
122 QIO_CHANNEL_WEBSOCK_HANDSHAKE_DELIM);
124 ret = g_strndup(begin, end - begin);
132 static int qio_channel_websock_handshake_send_response(QIOChannelWebsock *ioc,
136 char combined_key[QIO_CHANNEL_WEBSOCK_CLIENT_KEY_LEN +
137 QIO_CHANNEL_WEBSOCK_GUID_LEN + 1];
138 char *accept = NULL, *response = NULL;
141 g_strlcpy(combined_key, key, QIO_CHANNEL_WEBSOCK_CLIENT_KEY_LEN + 1);
142 g_strlcat(combined_key, QIO_CHANNEL_WEBSOCK_GUID,
143 QIO_CHANNEL_WEBSOCK_CLIENT_KEY_LEN +
144 QIO_CHANNEL_WEBSOCK_GUID_LEN + 1);
146 /* hash and encode it */
147 if (qcrypto_hash_base64(QCRYPTO_HASH_ALG_SHA1,
149 QIO_CHANNEL_WEBSOCK_CLIENT_KEY_LEN +
150 QIO_CHANNEL_WEBSOCK_GUID_LEN,
156 response = g_strdup_printf(QIO_CHANNEL_WEBSOCK_HANDSHAKE_RESPONSE, accept);
157 responselen = strlen(response);
158 buffer_reserve(&ioc->encoutput, responselen);
159 buffer_append(&ioc->encoutput, response, responselen);
167 static int qio_channel_websock_handshake_process(QIOChannelWebsock *ioc,
173 char *protocols = qio_channel_websock_handshake_entry(
174 line, size, QIO_CHANNEL_WEBSOCK_HEADER_PROTOCOL);
175 char *version = qio_channel_websock_handshake_entry(
176 line, size, QIO_CHANNEL_WEBSOCK_HEADER_VERSION);
177 char *key = qio_channel_websock_handshake_entry(
178 line, size, QIO_CHANNEL_WEBSOCK_HEADER_KEY);
181 error_setg(errp, "Missing websocket protocol header data");
186 error_setg(errp, "Missing websocket version header data");
191 error_setg(errp, "Missing websocket key header data");
195 if (!g_strrstr(protocols, QIO_CHANNEL_WEBSOCK_PROTOCOL_BINARY)) {
196 error_setg(errp, "No '%s' protocol is supported by client '%s'",
197 QIO_CHANNEL_WEBSOCK_PROTOCOL_BINARY, protocols);
201 if (!g_str_equal(version, QIO_CHANNEL_WEBSOCK_SUPPORTED_VERSION)) {
202 error_setg(errp, "Version '%s' is not supported by client '%s'",
203 QIO_CHANNEL_WEBSOCK_SUPPORTED_VERSION, version);
207 if (strlen(key) != QIO_CHANNEL_WEBSOCK_CLIENT_KEY_LEN) {
208 error_setg(errp, "Key length '%zu' was not as expected '%d'",
209 strlen(key), QIO_CHANNEL_WEBSOCK_CLIENT_KEY_LEN);
213 ret = qio_channel_websock_handshake_send_response(ioc, key, errp);
222 static int qio_channel_websock_handshake_read(QIOChannelWebsock *ioc,
227 /* Typical HTTP headers from novnc are 512 bytes, so limiting
228 * total header size to 4096 is easily enough. */
229 size_t want = 4096 - ioc->encinput.offset;
230 buffer_reserve(&ioc->encinput, want);
231 ret = qio_channel_read(ioc->master,
232 (char *)buffer_end(&ioc->encinput), want, errp);
236 ioc->encinput.offset += ret;
238 handshake_end = g_strstr_len((char *)ioc->encinput.buffer,
239 ioc->encinput.offset,
240 QIO_CHANNEL_WEBSOCK_HANDSHAKE_END);
241 if (!handshake_end) {
242 if (ioc->encinput.offset >= 4096) {
244 "End of headers not found in first 4096 bytes");
251 if (qio_channel_websock_handshake_process(ioc,
252 (char *)ioc->encinput.buffer,
253 ioc->encinput.offset,
258 buffer_advance(&ioc->encinput,
259 handshake_end - (char *)ioc->encinput.buffer +
260 strlen(QIO_CHANNEL_WEBSOCK_HANDSHAKE_END));
264 static gboolean qio_channel_websock_handshake_send(QIOChannel *ioc,
265 GIOCondition condition,
268 QIOTask *task = user_data;
269 QIOChannelWebsock *wioc = QIO_CHANNEL_WEBSOCK(
270 qio_task_get_source(task));
274 ret = qio_channel_write(wioc->master,
275 (char *)wioc->encoutput.buffer,
276 wioc->encoutput.offset,
280 trace_qio_channel_websock_handshake_fail(ioc);
281 qio_task_abort(task, err);
286 buffer_advance(&wioc->encoutput, ret);
287 if (wioc->encoutput.offset == 0) {
288 trace_qio_channel_websock_handshake_complete(ioc);
289 qio_task_complete(task);
292 trace_qio_channel_websock_handshake_pending(ioc, G_IO_OUT);
296 static gboolean qio_channel_websock_handshake_io(QIOChannel *ioc,
297 GIOCondition condition,
300 QIOTask *task = user_data;
301 QIOChannelWebsock *wioc = QIO_CHANNEL_WEBSOCK(
302 qio_task_get_source(task));
306 ret = qio_channel_websock_handshake_read(wioc, &err);
308 trace_qio_channel_websock_handshake_fail(ioc);
309 qio_task_abort(task, err);
314 trace_qio_channel_websock_handshake_pending(ioc, G_IO_IN);
315 /* need more data still */
319 object_ref(OBJECT(task));
320 trace_qio_channel_websock_handshake_reply(ioc);
321 qio_channel_add_watch(
324 qio_channel_websock_handshake_send,
326 (GDestroyNotify)object_unref);
331 static void qio_channel_websock_encode(QIOChannelWebsock *ioc)
335 char buf[QIO_CHANNEL_WEBSOCK_HEADER_LEN_64_BIT];
336 QIOChannelWebsockHeader ws;
339 if (!ioc->rawoutput.offset) {
343 header.ws.b0 = (1 << QIO_CHANNEL_WEBSOCK_HEADER_SHIFT_FIN) |
344 (QIO_CHANNEL_WEBSOCK_OPCODE_BINARY_FRAME &
345 QIO_CHANNEL_WEBSOCK_HEADER_FIELD_OPCODE);
346 if (ioc->rawoutput.offset <
347 QIO_CHANNEL_WEBSOCK_PAYLOAD_LEN_THRESHOLD_7_BIT) {
348 header.ws.b1 = (uint8_t)ioc->rawoutput.offset;
349 header_size = QIO_CHANNEL_WEBSOCK_HEADER_LEN_7_BIT;
350 } else if (ioc->rawoutput.offset <
351 QIO_CHANNEL_WEBSOCK_PAYLOAD_LEN_THRESHOLD_16_BIT) {
352 header.ws.b1 = QIO_CHANNEL_WEBSOCK_PAYLOAD_LEN_MAGIC_16_BIT;
353 header.ws.u.s16.l16 = cpu_to_be16((uint16_t)ioc->rawoutput.offset);
354 header_size = QIO_CHANNEL_WEBSOCK_HEADER_LEN_16_BIT;
356 header.ws.b1 = QIO_CHANNEL_WEBSOCK_PAYLOAD_LEN_MAGIC_64_BIT;
357 header.ws.u.s64.l64 = cpu_to_be64(ioc->rawoutput.offset);
358 header_size = QIO_CHANNEL_WEBSOCK_HEADER_LEN_64_BIT;
360 header_size -= QIO_CHANNEL_WEBSOCK_HEADER_LEN_MASK;
362 buffer_reserve(&ioc->encoutput, header_size + ioc->rawoutput.offset);
363 buffer_append(&ioc->encoutput, header.buf, header_size);
364 buffer_append(&ioc->encoutput, ioc->rawoutput.buffer,
365 ioc->rawoutput.offset);
366 buffer_reset(&ioc->rawoutput);
370 static ssize_t qio_channel_websock_decode_header(QIOChannelWebsock *ioc,
373 unsigned char opcode, fin, has_mask;
376 QIOChannelWebsockHeader *header =
377 (QIOChannelWebsockHeader *)ioc->encinput.buffer;
379 if (ioc->payload_remain) {
381 "Decoding header but %zu bytes of payload remain",
382 ioc->payload_remain);
385 if (ioc->encinput.offset < QIO_CHANNEL_WEBSOCK_HEADER_LEN_7_BIT) {
386 /* header not complete */
387 return QIO_CHANNEL_ERR_BLOCK;
390 fin = (header->b0 & QIO_CHANNEL_WEBSOCK_HEADER_FIELD_FIN) >>
391 QIO_CHANNEL_WEBSOCK_HEADER_SHIFT_FIN;
392 opcode = header->b0 & QIO_CHANNEL_WEBSOCK_HEADER_FIELD_OPCODE;
393 has_mask = (header->b1 & QIO_CHANNEL_WEBSOCK_HEADER_FIELD_HAS_MASK) >>
394 QIO_CHANNEL_WEBSOCK_HEADER_SHIFT_HAS_MASK;
395 payload_len = header->b1 & QIO_CHANNEL_WEBSOCK_HEADER_FIELD_PAYLOAD_LEN;
397 if (opcode == QIO_CHANNEL_WEBSOCK_OPCODE_CLOSE) {
402 /* Websocket frame sanity check:
403 * * Websocket fragmentation is not supported.
404 * * All websockets frames sent by a client have to be masked.
405 * * Only binary encoding is supported.
408 error_setg(errp, "websocket fragmentation is not supported");
412 error_setg(errp, "websocket frames must be masked");
415 if (opcode != QIO_CHANNEL_WEBSOCK_OPCODE_BINARY_FRAME) {
416 error_setg(errp, "only binary websocket frames are supported");
420 if (payload_len < QIO_CHANNEL_WEBSOCK_PAYLOAD_LEN_MAGIC_16_BIT) {
421 ioc->payload_remain = payload_len;
422 header_size = QIO_CHANNEL_WEBSOCK_HEADER_LEN_7_BIT;
423 ioc->mask = header->u.m;
424 } else if (payload_len == QIO_CHANNEL_WEBSOCK_PAYLOAD_LEN_MAGIC_16_BIT &&
425 ioc->encinput.offset >= QIO_CHANNEL_WEBSOCK_HEADER_LEN_16_BIT) {
426 ioc->payload_remain = be16_to_cpu(header->u.s16.l16);
427 header_size = QIO_CHANNEL_WEBSOCK_HEADER_LEN_16_BIT;
428 ioc->mask = header->u.s16.m16;
429 } else if (payload_len == QIO_CHANNEL_WEBSOCK_PAYLOAD_LEN_MAGIC_64_BIT &&
430 ioc->encinput.offset >= QIO_CHANNEL_WEBSOCK_HEADER_LEN_64_BIT) {
431 ioc->payload_remain = be64_to_cpu(header->u.s64.l64);
432 header_size = QIO_CHANNEL_WEBSOCK_HEADER_LEN_64_BIT;
433 ioc->mask = header->u.s64.m64;
435 /* header not complete */
436 return QIO_CHANNEL_ERR_BLOCK;
439 buffer_advance(&ioc->encinput, header_size);
444 static ssize_t qio_channel_websock_decode_payload(QIOChannelWebsock *ioc,
451 if (!ioc->payload_remain) {
453 "Decoding payload but no bytes of payload remain");
457 /* If we aren't at the end of the payload, then drop
458 * off the last bytes, so we're always multiple of 4
459 * for purpose of unmasking, except at end of payload
461 if (ioc->encinput.offset < ioc->payload_remain) {
462 payload_len = ioc->encinput.offset - (ioc->encinput.offset % 4);
464 payload_len = ioc->payload_remain;
466 if (payload_len == 0) {
467 return QIO_CHANNEL_ERR_BLOCK;
470 ioc->payload_remain -= payload_len;
473 /* process 1 frame (32 bit op) */
474 payload32 = (uint32_t *)ioc->encinput.buffer;
475 for (i = 0; i < payload_len / 4; i++) {
476 payload32[i] ^= ioc->mask.u;
478 /* process the remaining bytes (if any) */
479 for (i *= 4; i < payload_len; i++) {
480 ioc->encinput.buffer[i] ^= ioc->mask.c[i % 4];
483 buffer_reserve(&ioc->rawinput, payload_len);
484 buffer_append(&ioc->rawinput, ioc->encinput.buffer, payload_len);
485 buffer_advance(&ioc->encinput, payload_len);
491 qio_channel_websock_new_server(QIOChannel *master)
493 QIOChannelWebsock *wioc;
496 wioc = QIO_CHANNEL_WEBSOCK(object_new(TYPE_QIO_CHANNEL_WEBSOCK));
497 ioc = QIO_CHANNEL(wioc);
499 wioc->master = master;
500 if (master->features & (1 << QIO_CHANNEL_FEATURE_SHUTDOWN)) {
501 ioc->features |= (1 << QIO_CHANNEL_FEATURE_SHUTDOWN);
503 object_ref(OBJECT(master));
505 trace_qio_channel_websock_new_server(wioc, master);
509 void qio_channel_websock_handshake(QIOChannelWebsock *ioc,
512 GDestroyNotify destroy)
516 task = qio_task_new(OBJECT(ioc),
521 trace_qio_channel_websock_handshake_start(ioc);
522 trace_qio_channel_websock_handshake_pending(ioc, G_IO_IN);
523 qio_channel_add_watch(ioc->master,
525 qio_channel_websock_handshake_io,
531 static void qio_channel_websock_finalize(Object *obj)
533 QIOChannelWebsock *ioc = QIO_CHANNEL_WEBSOCK(obj);
535 buffer_free(&ioc->encinput);
536 buffer_free(&ioc->encoutput);
537 buffer_free(&ioc->rawinput);
538 buffer_free(&ioc->rawoutput);
539 object_unref(OBJECT(ioc->master));
541 g_source_remove(ioc->io_tag);
544 error_free(ioc->io_err);
549 static ssize_t qio_channel_websock_read_wire(QIOChannelWebsock *ioc,
554 if (ioc->encinput.offset < 4096) {
555 size_t want = 4096 - ioc->encinput.offset;
557 buffer_reserve(&ioc->encinput, want);
558 ret = qio_channel_read(ioc->master,
559 (char *)ioc->encinput.buffer +
560 ioc->encinput.offset,
567 ioc->encinput.offset == 0) {
570 ioc->encinput.offset += ret;
573 if (ioc->payload_remain == 0) {
574 ret = qio_channel_websock_decode_header(ioc, errp);
583 ret = qio_channel_websock_decode_payload(ioc, errp);
591 static ssize_t qio_channel_websock_write_wire(QIOChannelWebsock *ioc,
596 qio_channel_websock_encode(ioc);
598 while (ioc->encoutput.offset > 0) {
599 ret = qio_channel_write(ioc->master,
600 (char *)ioc->encoutput.buffer,
601 ioc->encoutput.offset,
604 if (ret == QIO_CHANNEL_ERR_BLOCK &&
611 buffer_advance(&ioc->encoutput, ret);
618 static void qio_channel_websock_flush_free(gpointer user_data)
620 QIOChannelWebsock *wioc = QIO_CHANNEL_WEBSOCK(user_data);
621 object_unref(OBJECT(wioc));
624 static void qio_channel_websock_set_watch(QIOChannelWebsock *ioc);
626 static gboolean qio_channel_websock_flush(QIOChannel *ioc,
627 GIOCondition condition,
630 QIOChannelWebsock *wioc = QIO_CHANNEL_WEBSOCK(user_data);
633 if (condition & G_IO_OUT) {
634 ret = qio_channel_websock_write_wire(wioc, &wioc->io_err);
640 if (condition & G_IO_IN) {
641 ret = qio_channel_websock_read_wire(wioc, &wioc->io_err);
651 qio_channel_websock_set_watch(wioc);
656 static void qio_channel_websock_unset_watch(QIOChannelWebsock *ioc)
659 g_source_remove(ioc->io_tag);
664 static void qio_channel_websock_set_watch(QIOChannelWebsock *ioc)
666 GIOCondition cond = 0;
668 qio_channel_websock_unset_watch(ioc);
674 if (ioc->encoutput.offset) {
677 if (ioc->encinput.offset < QIO_CHANNEL_WEBSOCK_MAX_BUFFER &&
683 object_ref(OBJECT(ioc));
685 qio_channel_add_watch(ioc->master,
687 qio_channel_websock_flush,
689 qio_channel_websock_flush_free);
694 static ssize_t qio_channel_websock_readv(QIOChannel *ioc,
695 const struct iovec *iov,
701 QIOChannelWebsock *wioc = QIO_CHANNEL_WEBSOCK(ioc);
707 *errp = error_copy(wioc->io_err);
711 if (!wioc->rawinput.offset) {
712 ret = qio_channel_websock_read_wire(QIO_CHANNEL_WEBSOCK(ioc), errp);
718 for (i = 0 ; i < niov ; i++) {
719 size_t want = iov[i].iov_len;
720 if (want > (wioc->rawinput.offset - got)) {
721 want = (wioc->rawinput.offset - got);
724 memcpy(iov[i].iov_base,
725 wioc->rawinput.buffer + got,
729 if (want < iov[i].iov_len) {
734 buffer_advance(&wioc->rawinput, got);
735 qio_channel_websock_set_watch(wioc);
740 static ssize_t qio_channel_websock_writev(QIOChannel *ioc,
741 const struct iovec *iov,
747 QIOChannelWebsock *wioc = QIO_CHANNEL_WEBSOCK(ioc);
753 *errp = error_copy(wioc->io_err);
758 error_setg(errp, "%s", "Broken pipe");
762 for (i = 0; i < niov; i++) {
763 size_t want = iov[i].iov_len;
764 if ((want + wioc->rawoutput.offset) > QIO_CHANNEL_WEBSOCK_MAX_BUFFER) {
765 want = (QIO_CHANNEL_WEBSOCK_MAX_BUFFER - wioc->rawoutput.offset);
771 buffer_reserve(&wioc->rawoutput, want);
772 buffer_append(&wioc->rawoutput, iov[i].iov_base, want);
774 if (want < iov[i].iov_len) {
780 ret = qio_channel_websock_write_wire(wioc, errp);
782 ret != QIO_CHANNEL_ERR_BLOCK) {
783 qio_channel_websock_unset_watch(wioc);
787 qio_channel_websock_set_watch(wioc);
790 return QIO_CHANNEL_ERR_BLOCK;
796 static int qio_channel_websock_set_blocking(QIOChannel *ioc,
800 QIOChannelWebsock *wioc = QIO_CHANNEL_WEBSOCK(ioc);
802 qio_channel_set_blocking(wioc->master, enabled, errp);
806 static void qio_channel_websock_set_delay(QIOChannel *ioc,
809 QIOChannelWebsock *tioc = QIO_CHANNEL_WEBSOCK(ioc);
811 qio_channel_set_delay(tioc->master, enabled);
814 static void qio_channel_websock_set_cork(QIOChannel *ioc,
817 QIOChannelWebsock *tioc = QIO_CHANNEL_WEBSOCK(ioc);
819 qio_channel_set_cork(tioc->master, enabled);
822 static int qio_channel_websock_shutdown(QIOChannel *ioc,
823 QIOChannelShutdown how,
826 QIOChannelWebsock *tioc = QIO_CHANNEL_WEBSOCK(ioc);
828 return qio_channel_shutdown(tioc->master, how, errp);
831 static int qio_channel_websock_close(QIOChannel *ioc,
834 QIOChannelWebsock *wioc = QIO_CHANNEL_WEBSOCK(ioc);
836 return qio_channel_close(wioc->master, errp);
839 typedef struct QIOChannelWebsockSource QIOChannelWebsockSource;
840 struct QIOChannelWebsockSource {
842 QIOChannelWebsock *wioc;
843 GIOCondition condition;
847 qio_channel_websock_source_prepare(GSource *source,
850 QIOChannelWebsockSource *wsource = (QIOChannelWebsockSource *)source;
851 GIOCondition cond = 0;
854 if (wsource->wioc->rawinput.offset) {
857 if (wsource->wioc->rawoutput.offset < QIO_CHANNEL_WEBSOCK_MAX_BUFFER) {
861 return cond & wsource->condition;
865 qio_channel_websock_source_check(GSource *source)
867 QIOChannelWebsockSource *wsource = (QIOChannelWebsockSource *)source;
868 GIOCondition cond = 0;
870 if (wsource->wioc->rawinput.offset) {
873 if (wsource->wioc->rawoutput.offset < QIO_CHANNEL_WEBSOCK_MAX_BUFFER) {
877 return cond & wsource->condition;
881 qio_channel_websock_source_dispatch(GSource *source,
882 GSourceFunc callback,
885 QIOChannelFunc func = (QIOChannelFunc)callback;
886 QIOChannelWebsockSource *wsource = (QIOChannelWebsockSource *)source;
887 GIOCondition cond = 0;
889 if (wsource->wioc->rawinput.offset) {
892 if (wsource->wioc->rawoutput.offset < QIO_CHANNEL_WEBSOCK_MAX_BUFFER) {
896 return (*func)(QIO_CHANNEL(wsource->wioc),
897 (cond & wsource->condition),
902 qio_channel_websock_source_finalize(GSource *source)
904 QIOChannelWebsockSource *ssource = (QIOChannelWebsockSource *)source;
906 object_unref(OBJECT(ssource->wioc));
909 GSourceFuncs qio_channel_websock_source_funcs = {
910 qio_channel_websock_source_prepare,
911 qio_channel_websock_source_check,
912 qio_channel_websock_source_dispatch,
913 qio_channel_websock_source_finalize
916 static GSource *qio_channel_websock_create_watch(QIOChannel *ioc,
917 GIOCondition condition)
919 QIOChannelWebsock *wioc = QIO_CHANNEL_WEBSOCK(ioc);
920 QIOChannelWebsockSource *ssource;
923 source = g_source_new(&qio_channel_websock_source_funcs,
924 sizeof(QIOChannelWebsockSource));
925 ssource = (QIOChannelWebsockSource *)source;
927 ssource->wioc = wioc;
928 object_ref(OBJECT(wioc));
930 ssource->condition = condition;
932 qio_channel_websock_set_watch(wioc);
936 static void qio_channel_websock_class_init(ObjectClass *klass,
937 void *class_data G_GNUC_UNUSED)
939 QIOChannelClass *ioc_klass = QIO_CHANNEL_CLASS(klass);
941 ioc_klass->io_writev = qio_channel_websock_writev;
942 ioc_klass->io_readv = qio_channel_websock_readv;
943 ioc_klass->io_set_blocking = qio_channel_websock_set_blocking;
944 ioc_klass->io_set_cork = qio_channel_websock_set_cork;
945 ioc_klass->io_set_delay = qio_channel_websock_set_delay;
946 ioc_klass->io_close = qio_channel_websock_close;
947 ioc_klass->io_shutdown = qio_channel_websock_shutdown;
948 ioc_klass->io_create_watch = qio_channel_websock_create_watch;
951 static const TypeInfo qio_channel_websock_info = {
952 .parent = TYPE_QIO_CHANNEL,
953 .name = TYPE_QIO_CHANNEL_WEBSOCK,
954 .instance_size = sizeof(QIOChannelWebsock),
955 .instance_finalize = qio_channel_websock_finalize,
956 .class_init = qio_channel_websock_class_init,
959 static void qio_channel_websock_register_types(void)
961 type_register_static(&qio_channel_websock_info);
964 type_init(qio_channel_websock_register_types);