init

bootstrap.sh

@@ -0,0 +1,85 @@
+#!/bin/bash
+
+# Based on: http://www.richud.com/wiki/Ubuntu_Fluxbox_GUI_with_x11vnc_and_Xvfb
+
+readonly G_LOG_I='[INFO]'
+readonly G_LOG_W='[WARN]'
+readonly G_LOG_E='[ERROR]'
+
+main() {
+    launch_xvfb
+    launch_window_manager
+    run_vnc_server
+}
+
+launch_xvfb() {
+    # Set defaults if the user did not specify envs.
+    export DISPLAY=${XVFB_DISPLAY:-:0}
+    local screen=${XVFB_SCREEN:-0}
+    local resolution=${XVFB_RESOLUTION:-1280x720x24}
+    local timeout=${XVFB_TIMEOUT:-5}
+
+    # Start and wait for either Xvfb to be fully up or we hit the timeout.
+    Xvfb ${DISPLAY} -screen ${screen} ${resolution} &
+    local loopCount=0
+    until xdpyinfo -display ${DISPLAY} > /dev/null 2>&1
+    do
+        loopCount=$((loopCount+1))
+        sleep 1
+        if [ ${loopCount} -gt ${timeout} ]
+        then
+            echo "${G_LOG_E} xvfb failed to start."
+            exit 1
+        fi
+    done
+}
+
+launch_window_manager() {
+    local timeout=${XVFB_TIMEOUT:-5}
+
+    # Start and wait for either fluxbox to be fully up or we hit the timeout.
+    fluxbox &
+    local loopCount=0
+    until wmctrl -m > /dev/null 2>&1
+    do
+        loopCount=$((loopCount+1))
+        sleep 1
+        if [ ${loopCount} -gt ${timeout} ]
+        then
+            echo "${G_LOG_E} fluxbox failed to start."
+            exit 1
+        fi
+    done
+}
+
+run_vnc_server() {
+    local passwordArgument='-nopw'
+
+    if [ -n "${VNC_SERVER_PASSWORD}" ]
+    then
+        local passwordFilePath="${HOME}/x11vnc.pass"
+        if ! x11vnc -storepasswd "${VNC_SERVER_PASSWORD}" "${passwordFilePath}"
+        then
+            echo "${G_LOG_E} Failed to store x11vnc password."
+            exit 1
+        fi
+        passwordArgument=-"-rfbauth ${passwordFilePath}"
+        echo "${G_LOG_I} The VNC server will ask for a password."
+    else
+        echo "${G_LOG_W} The VNC server will NOT ask for a password."
+    fi
+
+    x11vnc -display ${DISPLAY} -forever ${passwordArgument} &
+    wait $!
+}
+
+control_c() {
+    echo ""
+    exit
+}
+
+trap control_c SIGINT SIGTERM SIGHUP
+
+main
+
+exit