e@9: #!/bin/bash
e@9: # Based on: http://www.richud.com/wiki/Ubuntu_Fluxbox_GUI_with_x11vnc_and_Xvfb
e@9: 
e@9: readonly G_LOG_I='[INFO]'
e@9: readonly G_LOG_W='[WARN]'
e@9: readonly G_LOG_E='[ERROR]'
e@9: 
e@9: main() {
e@9:     launch_xvfb
e@9:     launch_window_manager
e@9:     run_vnc_server
e@9: }
e@9: 
e@9: launch_xvfb() {
e@9:     # Set defaults if the user did not specify envs.
e@9:     export DISPLAY=${XVFB_DISPLAY:-:1}
e@9:     local screen=${XVFB_SCREEN:-0}
e@9:     local resolution=${XVFB_RESOLUTION:-1280x1024x24}
e@9:     local timeout=${XVFB_TIMEOUT:-5}
e@9: 
e@9:     # Start and wait for either Xvfb to be fully up or we hit the timeout.
e@9:     Xvfb ${DISPLAY} -screen ${screen} ${resolution} &
e@9:     local loopCount=0
e@9:     until xdpyinfo -display ${DISPLAY} > /dev/null 2>&1
e@9:     do
e@9:         loopCount=$((loopCount+1))
e@9:         sleep 1
e@9:         if [ ${loopCount} -gt ${timeout} ]
e@9:         then
e@9:             echo "${G_LOG_E} xvfb failed to start."
e@9:             exit 1
e@9:         fi
e@9:     done
e@9: }
e@9: 
e@9: launch_window_manager() {
e@9:     local timeout=${XVFB_TIMEOUT:-5}
e@9: 
e@9:     # Start and wait for either fluxbox to be fully up or we hit the timeout.
e@9:     fluxbox &
e@9:     local loopCount=0
e@9:     until wmctrl -m > /dev/null 2>&1
e@9:     do
e@9:         loopCount=$((loopCount+1))
e@9:         sleep 1
e@9:         if [ ${loopCount} -gt ${timeout} ]
e@9:         then
e@9:             echo "${G_LOG_E} fluxbox failed to start."
e@9:             exit 1
e@9:         fi
e@9:     done
e@9: }
e@9: 
e@9: run_vnc_server() {
e@9:     local passwordArgument='-nopw'
e@9: 
e@9:     if [ -n "${VNC_SERVER_PASSWORD}" ]
e@9:     then
e@9:         local passwordFilePath="${HOME}/x11vnc.pass"
e@9:         if ! x11vnc -storepasswd "${VNC_SERVER_PASSWORD}" "${passwordFilePath}"
e@9:         then
e@9:             echo "${G_LOG_E} Failed to store x11vnc password."
e@9:             exit 1
e@9:         fi
e@9:         passwordArgument=-"-rfbauth ${passwordFilePath}"
e@9:         echo "${G_LOG_I} The VNC server will ask for a password."
e@9:     else
e@9:         echo "${G_LOG_W} The VNC server will NOT ask for a password."
e@9:     fi
e@9: 
e@9:     x11vnc -display ${DISPLAY} -forever ${passwordArgument} &
e@9:     wait $!
e@9: }
e@9: 
e@9: control_c() {
e@9:     echo ""
e@9:     exit
e@9: }
e@9: 
e@9: trap control_c SIGINT SIGTERM SIGHUP
e@9: 
e@9: main
e@9: 
e@9: exit