Files
docker-steam-headless/overlay/etc/cont-init.d/90-configure_vnc.sh

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echo "**** Configure VNC ****"
function get_next_unused_port() {
local __start_port=${1}
local __start_port=$((__start_port+1))
local __netstat_report=$(netstat -atulnp 2> /dev/null)
for __check_port in $(seq ${__start_port} 65000); do
[[ -z $(echo "${__netstat_report}" | grep ${__check_port}) ]] && break;
done
echo ${__check_port}
}
# Configure random ports for VNC service, pulseaudio socket, noVNC service and audio transport websocket
# Note: Ports 32035-32248 are unallocated port ranges. We should be able to find something in here that we can use
# REF: https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?&page=130
DYNAMIC_PORT_VNC=$(get_next_unused_port 32035)
DYNAMIC_PORT_NOVNC_SERVICE=$(get_next_unused_port ${DYNAMIC_PORT_VNC})
DYNAMIC_PORT_AUDIO_WEBSOCKET=$(get_next_unused_port ${DYNAMIC_PORT_NOVNC_SERVICE})
DYNAMIC_PORT_AUDIO_STREAM=$(get_next_unused_port ${DYNAMIC_PORT_AUDIO_WEBSOCKET})
export PORT_VNC=${PORT_VNC:-$DYNAMIC_PORT_VNC}
echo "Configure VNC service port '${PORT_VNC}'"
export PORT_NOVNC_SERVICE=${PORT_NOVNC_SERVICE:-$DYNAMIC_PORT_NOVNC_SERVICE}
echo "Configure noVNC service port '${PORT_NOVNC_SERVICE}'"
export PORT_AUDIO_WEBSOCKET=${PORT_AUDIO_WEBSOCKET:-$DYNAMIC_PORT_AUDIO_WEBSOCKET}
echo "Configure audio websocket port '${PORT_AUDIO_WEBSOCKET}'"
export PORT_AUDIO_STREAM=${PORT_AUDIO_STREAM:-$DYNAMIC_PORT_AUDIO_STREAM}
echo "Configure pulseaudio encoded stream port '${PORT_AUDIO_STREAM}'"
if ([ "${MODE}" != "s" ] && [ "${MODE}" != "secondary" ]); then
if [ ${WEB_UI_MODE} = "vnc" ]; then
echo "Enable VNC server"
sed -i 's|^autostart.*=.*$|autostart=true|' /etc/supervisor.d/vnc.ini
# Configure Nginx proxy for the websocket and VNC
cp -f /opt/noVNC/nginx.template.conf /opt/noVNC/nginx.conf
sed -i "s|<USER>|${USER}|" /opt/noVNC/nginx.conf
sed -i "s|<PORT_NOVNC_WEB>|${PORT_NOVNC_WEB}|" /opt/noVNC/nginx.conf
sed -i "s|<PORT_NOVNC_SERVICE>|${PORT_NOVNC_SERVICE}|" /opt/noVNC/nginx.conf
sed -i "s|<PORT_AUDIO_WEBSOCKET>|${PORT_AUDIO_WEBSOCKET}|" /opt/noVNC/nginx.conf
mkdir -p /var/log/vncproxy
chown -R ${USER} /var/log/vncproxy
if [[ "${ENABLE_VNC_AUDIO}" == "true" ]]; then
# Credits for this audio patch:
# - https://github.com/novnc/noVNC/issues/302
# - https://github.com/vexingcodes/dwarf-fortress-docker
# - https://github.com/calebj/noVNC
if [ -f /opt/noVNC/audio.patch ]; then
echo "Patching noVNC with audio websocket"
# Update port specification in patch file
sed -i "s|<PORT_AUDIO_WEBSOCKET>|${PORT_AUDIO_WEBSOCKET}|" /opt/noVNC/audio.patch
# Apply patch
pushd /opt/noVNC/ &> /dev/null
patch -p1 --input=/opt/noVNC/audio.patch --batch --quiet
popd &> /dev/null
rm /opt/noVNC/audio.patch
fi
# Enable supervisord script
sed -i 's|^autostart.*=.*$|autostart=true|' /etc/supervisor.d/vnc-audio.ini
# Remove x11vnc from applications menu
if ! grep -q 'Hidden=true' /usr/share/applications/x11vnc.desktop; then
echo 'Hidden=true' >> /usr/share/applications/x11vnc.desktop
fi
else
echo "Disable audio stream"
echo "Disable audio websock"
# Disable supervisord script
sed -i 's|^autostart.*=.*$|autostart=false|' /etc/supervisor.d/vnc-audio.ini
fi
else
echo "Disable VNC server"
fi
else
echo "VNC server not available when container is run in 'secondary' mode"
fi
echo "DONE"