132 lines
3.8 KiB
C
132 lines
3.8 KiB
C
/*
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* QEMU VNC display driver: Websockets support
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*
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* Copyright (C) 2010 Joel Martin
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* Copyright (C) 2012 Tim Hardeck
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*
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* This is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This software is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "qapi/error.h"
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#include "vnc.h"
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#include "io/channel-websock.h"
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#include "qemu/bswap.h"
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static void vncws_tls_handshake_done(QIOTask *task,
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gpointer user_data)
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{
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VncState *vs = user_data;
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Error *err = NULL;
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if (qio_task_propagate_error(task, &err)) {
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VNC_DEBUG("Handshake failed %s\n", error_get_pretty(err));
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vnc_client_error(vs);
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error_free(err);
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} else {
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VNC_DEBUG("TLS handshake complete, starting websocket handshake\n");
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vs->ioc_tag = qio_channel_add_watch(
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QIO_CHANNEL(vs->ioc), G_IO_IN, vncws_handshake_io, vs, NULL);
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}
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}
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gboolean vncws_tls_handshake_io(QIOChannel *ioc G_GNUC_UNUSED,
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GIOCondition condition G_GNUC_UNUSED,
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void *opaque)
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{
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VncState *vs = opaque;
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QIOChannelTLS *tls;
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Error *err = NULL;
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VNC_DEBUG("TLS Websocket connection required\n");
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if (vs->ioc_tag) {
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g_source_remove(vs->ioc_tag);
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vs->ioc_tag = 0;
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}
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tls = qio_channel_tls_new_server(
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vs->ioc,
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vs->vd->tlscreds,
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vs->vd->tlsaclname,
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&err);
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if (!tls) {
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VNC_DEBUG("Failed to setup TLS %s\n", error_get_pretty(err));
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error_free(err);
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vnc_client_error(vs);
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return TRUE;
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}
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qio_channel_set_name(QIO_CHANNEL(tls), "vnc-ws-server-tls");
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VNC_DEBUG("Start TLS WS handshake process\n");
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object_unref(OBJECT(vs->ioc));
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vs->ioc = QIO_CHANNEL(tls);
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vs->tls = qio_channel_tls_get_session(tls);
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qio_channel_tls_handshake(tls,
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vncws_tls_handshake_done,
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vs,
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NULL);
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return TRUE;
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}
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static void vncws_handshake_done(QIOTask *task,
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gpointer user_data)
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{
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VncState *vs = user_data;
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Error *err = NULL;
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if (qio_task_propagate_error(task, &err)) {
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VNC_DEBUG("Websock handshake failed %s\n", error_get_pretty(err));
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vnc_client_error(vs);
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error_free(err);
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} else {
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VNC_DEBUG("Websock handshake complete, starting VNC protocol\n");
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vnc_start_protocol(vs);
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vs->ioc_tag = qio_channel_add_watch(
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vs->ioc, G_IO_IN, vnc_client_io, vs, NULL);
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}
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}
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gboolean vncws_handshake_io(QIOChannel *ioc G_GNUC_UNUSED,
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GIOCondition condition G_GNUC_UNUSED,
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void *opaque)
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{
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VncState *vs = opaque;
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QIOChannelWebsock *wioc;
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VNC_DEBUG("Websocket negotiate starting\n");
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if (vs->ioc_tag) {
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g_source_remove(vs->ioc_tag);
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vs->ioc_tag = 0;
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}
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wioc = qio_channel_websock_new_server(vs->ioc);
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qio_channel_set_name(QIO_CHANNEL(wioc), "vnc-ws-server-websock");
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object_unref(OBJECT(vs->ioc));
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vs->ioc = QIO_CHANNEL(wioc);
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qio_channel_websock_handshake(wioc,
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vncws_handshake_done,
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vs,
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NULL);
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return TRUE;
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}
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