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 | |
21 | #include "qemu/osdep.h" |
22 | #include "qapi/error.h" |
23 | #include "vnc.h" |
24 | #include "io/channel-websock.h" |
25 | #include "qemu/bswap.h" |
26 | #include "trace.h" |
27 | |
28 | static void vncws_tls_handshake_done(QIOTask *task, |
29 | gpointer user_data) |
30 | { |
31 | VncState *vs = user_data; |
32 | Error *err = NULL; |
33 | |
34 | if (qio_task_propagate_error(task, &err)) { |
35 | VNC_DEBUG("Handshake failed %s\n" , error_get_pretty(err)); |
36 | vnc_client_error(vs); |
37 | error_free(err); |
38 | } else { |
39 | VNC_DEBUG("TLS handshake complete, starting websocket handshake\n" ); |
40 | if (vs->ioc_tag) { |
41 | g_source_remove(vs->ioc_tag); |
42 | } |
43 | vs->ioc_tag = qio_channel_add_watch( |
44 | QIO_CHANNEL(vs->ioc), G_IO_IN, vncws_handshake_io, vs, NULL); |
45 | } |
46 | } |
47 | |
48 | |
49 | gboolean vncws_tls_handshake_io(QIOChannel *ioc G_GNUC_UNUSED, |
50 | GIOCondition condition G_GNUC_UNUSED, |
51 | void *opaque) |
52 | { |
53 | VncState *vs = opaque; |
54 | QIOChannelTLS *tls; |
55 | Error *err = NULL; |
56 | |
57 | if (vs->ioc_tag) { |
58 | g_source_remove(vs->ioc_tag); |
59 | vs->ioc_tag = 0; |
60 | } |
61 | |
62 | tls = qio_channel_tls_new_server( |
63 | vs->ioc, |
64 | vs->vd->tlscreds, |
65 | vs->vd->tlsauthzid, |
66 | &err); |
67 | if (!tls) { |
68 | VNC_DEBUG("Failed to setup TLS %s\n" , error_get_pretty(err)); |
69 | error_free(err); |
70 | vnc_client_error(vs); |
71 | return TRUE; |
72 | } |
73 | |
74 | qio_channel_set_name(QIO_CHANNEL(tls), "vnc-ws-server-tls" ); |
75 | |
76 | object_unref(OBJECT(vs->ioc)); |
77 | vs->ioc = QIO_CHANNEL(tls); |
78 | trace_vnc_client_io_wrap(vs, vs->ioc, "tls" ); |
79 | vs->tls = qio_channel_tls_get_session(tls); |
80 | |
81 | qio_channel_tls_handshake(tls, |
82 | vncws_tls_handshake_done, |
83 | vs, |
84 | NULL, |
85 | NULL); |
86 | |
87 | return TRUE; |
88 | } |
89 | |
90 | |
91 | static void vncws_handshake_done(QIOTask *task, |
92 | gpointer user_data) |
93 | { |
94 | VncState *vs = user_data; |
95 | Error *err = NULL; |
96 | |
97 | if (qio_task_propagate_error(task, &err)) { |
98 | VNC_DEBUG("Websock handshake failed %s\n" , error_get_pretty(err)); |
99 | vnc_client_error(vs); |
100 | error_free(err); |
101 | } else { |
102 | VNC_DEBUG("Websock handshake complete, starting VNC protocol\n" ); |
103 | vnc_start_protocol(vs); |
104 | if (vs->ioc_tag) { |
105 | g_source_remove(vs->ioc_tag); |
106 | } |
107 | vs->ioc_tag = qio_channel_add_watch( |
108 | vs->ioc, G_IO_IN, vnc_client_io, vs, NULL); |
109 | } |
110 | } |
111 | |
112 | |
113 | gboolean vncws_handshake_io(QIOChannel *ioc G_GNUC_UNUSED, |
114 | GIOCondition condition G_GNUC_UNUSED, |
115 | void *opaque) |
116 | { |
117 | VncState *vs = opaque; |
118 | QIOChannelWebsock *wioc; |
119 | |
120 | if (vs->ioc_tag) { |
121 | g_source_remove(vs->ioc_tag); |
122 | vs->ioc_tag = 0; |
123 | } |
124 | |
125 | wioc = qio_channel_websock_new_server(vs->ioc); |
126 | qio_channel_set_name(QIO_CHANNEL(wioc), "vnc-ws-server-websock" ); |
127 | |
128 | object_unref(OBJECT(vs->ioc)); |
129 | vs->ioc = QIO_CHANNEL(wioc); |
130 | trace_vnc_client_io_wrap(vs, vs->ioc, "websock" ); |
131 | |
132 | qio_channel_websock_handshake(wioc, |
133 | vncws_handshake_done, |
134 | vs, |
135 | NULL); |
136 | |
137 | return TRUE; |
138 | } |
139 | |