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1 #!/bin/bash
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2 # Based on: http://www.richud.com/wiki/Ubuntu_Fluxbox_GUI_with_x11vnc_and_Xvfb
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3
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4 readonly G_LOG_I='[INFO]'
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5 readonly G_LOG_W='[WARN]'
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6 readonly G_LOG_E='[ERROR]'
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7
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8 main() {
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9 launch_xvfb
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10 launch_window_manager
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11 run_vnc_server
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12 }
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13
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14 launch_xvfb() {
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15 # Set defaults if the user did not specify envs.
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16 export DISPLAY=${XVFB_DISPLAY:-:1}
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17 local screen=${XVFB_SCREEN:-0}
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18 local resolution=${XVFB_RESOLUTION:-1280x1024x24}
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19 local timeout=${XVFB_TIMEOUT:-5}
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20
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21 # Start and wait for either Xvfb to be fully up or we hit the timeout.
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22 Xvfb ${DISPLAY} -screen ${screen} ${resolution} &
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23 local loopCount=0
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24 until xdpyinfo -display ${DISPLAY} > /dev/null 2>&1
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25 do
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26 loopCount=$((loopCount+1))
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27 sleep 1
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28 if [ ${loopCount} -gt ${timeout} ]
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29 then
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30 echo "${G_LOG_E} xvfb failed to start."
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31 exit 1
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32 fi
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33 done
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34 }
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35
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36 launch_window_manager() {
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37 local timeout=${XVFB_TIMEOUT:-5}
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38
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39 # Start and wait for either fluxbox to be fully up or we hit the timeout.
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40 fluxbox &
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41 local loopCount=0
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42 until wmctrl -m > /dev/null 2>&1
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43 do
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44 loopCount=$((loopCount+1))
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45 sleep 1
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46 if [ ${loopCount} -gt ${timeout} ]
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47 then
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48 echo "${G_LOG_E} fluxbox failed to start."
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49 exit 1
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50 fi
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51 done
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52 }
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53
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54 run_vnc_server() {
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55 local passwordArgument='-nopw'
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56
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57 if [ -n "${VNC_SERVER_PASSWORD}" ]
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58 then
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59 local passwordFilePath="${HOME}/x11vnc.pass"
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60 if ! x11vnc -storepasswd "${VNC_SERVER_PASSWORD}" "${passwordFilePath}"
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61 then
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62 echo "${G_LOG_E} Failed to store x11vnc password."
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63 exit 1
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64 fi
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65 passwordArgument=-"-rfbauth ${passwordFilePath}"
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66 echo "${G_LOG_I} The VNC server will ask for a password."
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67 else
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68 echo "${G_LOG_W} The VNC server will NOT ask for a password."
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69 fi
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70
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71 x11vnc -display ${DISPLAY} -forever ${passwordArgument} &
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72 wait $!
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73 }
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74
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75 control_c() {
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76 echo ""
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77 exit
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78 }
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79
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80 trap control_c SIGINT SIGTERM SIGHUP
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81
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82 main
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83
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84 exit
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