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7536ee4b TH |
1 | /* |
2 | * QEMU VNC display driver: Websockets support | |
3 | * | |
4 | * Copyright (C) 2010 Joel Martin | |
5 | * Copyright (C) 2012 Tim Hardeck | |
6 | * | |
7 | * This is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License, or | |
10 | * (at your option) any later version. | |
11 | * | |
12 | * This software is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with this software; if not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
20 | ||
e16f4c87 | 21 | #include "qemu/osdep.h" |
da34e65c | 22 | #include "qapi/error.h" |
7536ee4b | 23 | #include "vnc.h" |
d5f04223 | 24 | #include "io/channel-websock.h" |
58369e22 | 25 | #include "qemu/bswap.h" |
0057a0d5 | 26 | |
60e705c5 | 27 | static void vncws_tls_handshake_done(QIOTask *task, |
2cc45228 DB |
28 | gpointer user_data) |
29 | { | |
30 | VncState *vs = user_data; | |
60e705c5 | 31 | Error *err = NULL; |
4a48aaa9 | 32 | |
60e705c5 | 33 | if (qio_task_propagate_error(task, &err)) { |
2cc45228 DB |
34 | VNC_DEBUG("Handshake failed %s\n", error_get_pretty(err)); |
35 | vnc_client_error(vs); | |
60e705c5 | 36 | error_free(err); |
2cc45228 | 37 | } else { |
d5f04223 | 38 | VNC_DEBUG("TLS handshake complete, starting websocket handshake\n"); |
04d2529d | 39 | vs->ioc_tag = qio_channel_add_watch( |
2cc45228 | 40 | QIO_CHANNEL(vs->ioc), G_IO_IN, vncws_handshake_io, vs, NULL); |
3e305e4a | 41 | } |
0057a0d5 TH |
42 | } |
43 | ||
2cc45228 | 44 | |
04d2529d DB |
45 | gboolean vncws_tls_handshake_io(QIOChannel *ioc G_GNUC_UNUSED, |
46 | GIOCondition condition G_GNUC_UNUSED, | |
47 | void *opaque) | |
0057a0d5 | 48 | { |
2cc45228 DB |
49 | VncState *vs = opaque; |
50 | QIOChannelTLS *tls; | |
3e305e4a | 51 | Error *err = NULL; |
0057a0d5 | 52 | |
2cc45228 DB |
53 | VNC_DEBUG("TLS Websocket connection required\n"); |
54 | if (vs->ioc_tag) { | |
55 | g_source_remove(vs->ioc_tag); | |
56 | vs->ioc_tag = 0; | |
57 | } | |
58 | ||
59 | tls = qio_channel_tls_new_server( | |
60 | vs->ioc, | |
61 | vs->vd->tlscreds, | |
62 | vs->vd->tlsaclname, | |
63 | &err); | |
64 | if (!tls) { | |
65 | VNC_DEBUG("Failed to setup TLS %s\n", error_get_pretty(err)); | |
3e305e4a DB |
66 | error_free(err); |
67 | vnc_client_error(vs); | |
04d2529d | 68 | return TRUE; |
0057a0d5 | 69 | } |
3e305e4a | 70 | |
10bcfe58 DB |
71 | qio_channel_set_name(QIO_CHANNEL(tls), "vnc-ws-server-tls"); |
72 | ||
3e305e4a | 73 | VNC_DEBUG("Start TLS WS handshake process\n"); |
2cc45228 DB |
74 | object_unref(OBJECT(vs->ioc)); |
75 | vs->ioc = QIO_CHANNEL(tls); | |
76 | vs->tls = qio_channel_tls_get_session(tls); | |
77 | ||
78 | qio_channel_tls_handshake(tls, | |
79 | vncws_tls_handshake_done, | |
80 | vs, | |
81 | NULL); | |
82 | ||
04d2529d | 83 | return TRUE; |
0057a0d5 | 84 | } |
0057a0d5 | 85 | |
7536ee4b | 86 | |
60e705c5 | 87 | static void vncws_handshake_done(QIOTask *task, |
d5f04223 DB |
88 | gpointer user_data) |
89 | { | |
90 | VncState *vs = user_data; | |
60e705c5 | 91 | Error *err = NULL; |
7536ee4b | 92 | |
60e705c5 | 93 | if (qio_task_propagate_error(task, &err)) { |
d5f04223 DB |
94 | VNC_DEBUG("Websock handshake failed %s\n", error_get_pretty(err)); |
95 | vnc_client_error(vs); | |
60e705c5 | 96 | error_free(err); |
d5f04223 DB |
97 | } else { |
98 | VNC_DEBUG("Websock handshake complete, starting VNC protocol\n"); | |
dbee9897 | 99 | vnc_start_protocol(vs); |
04d2529d DB |
100 | vs->ioc_tag = qio_channel_add_watch( |
101 | vs->ioc, G_IO_IN, vnc_client_io, vs, NULL); | |
7536ee4b TH |
102 | } |
103 | } | |
104 | ||
105 | ||
04d2529d DB |
106 | gboolean vncws_handshake_io(QIOChannel *ioc G_GNUC_UNUSED, |
107 | GIOCondition condition G_GNUC_UNUSED, | |
108 | void *opaque) | |
109 | { | |
110 | VncState *vs = opaque; | |
d5f04223 | 111 | QIOChannelWebsock *wioc; |
7536ee4b | 112 | |
d5f04223 DB |
113 | VNC_DEBUG("Websocket negotiate starting\n"); |
114 | if (vs->ioc_tag) { | |
115 | g_source_remove(vs->ioc_tag); | |
116 | vs->ioc_tag = 0; | |
7536ee4b TH |
117 | } |
118 | ||
d5f04223 | 119 | wioc = qio_channel_websock_new_server(vs->ioc); |
10bcfe58 | 120 | qio_channel_set_name(QIO_CHANNEL(wioc), "vnc-ws-server-websock"); |
7536ee4b | 121 | |
d5f04223 DB |
122 | object_unref(OBJECT(vs->ioc)); |
123 | vs->ioc = QIO_CHANNEL(wioc); | |
7536ee4b | 124 | |
d5f04223 DB |
125 | qio_channel_websock_handshake(wioc, |
126 | vncws_handshake_done, | |
127 | vs, | |
128 | NULL); | |
7536ee4b | 129 | |
d5f04223 | 130 | return TRUE; |
7536ee4b | 131 | } |