Initial commit

scripts/server.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+set -x
+
+RFB_PORT=59${DISPLAY_NUM}
+NOVNC_PORT=80${DISPLAY_NUM}
+
+echo Display at ${DISPLAY} with ${SCREEN_W}x${SCREEN_H}x24
+/opt/TurboVNC/bin/Xvnc ${DISPLAY} -geometry ${SCREEN_W}x${SCREEN_H} -depth 24 +xinerama -securitytypes none >/var/log/xvfb.log &
+fluxbox &
+/tmp/websockify/run -D --web=/tmp/noVNC/ --cert=/tmp/novnc.pem --key=/tmp/novnc.key ${NOVNC_PORT} localhost:${RFB_PORT}

scripts/server_start.sh

@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+APP=$1
+set -x
+
+# Signal helper
+source /opt/scripts/signals.sh
+
+PID=0
+TERM_handler() {
+    SIGNAME="$1"
+    echo "Killing ${PID}"
+    echo "Signal ${SIGNAME}"
+    if [ ${PID} -ne 0 ]; then
+        ps -ef --forest
+        CHILDS=$(pgrep -P "${PID}")
+        kill -"${SIGNAME}" -"${PID}"
+        for i in $CHILDS; do
+          wait $i
+        done
+    fi
+    ps -ef --forest
+    ret=$(signal_return_val ${SIGNAME})
+    exit $ret
+}
+
+signals_trap_with_arg TERM_handler SIGTERM
+${APP} &
+PID=$$
+
+# wait forever
+signals_wait_forever
+
+# https://docs.docker.com/compose/faq/
+# https://medium.com/@gchudnov/trapping-signals-in-docker-containers-7a57fdda7d86

scripts/signals.sh

@@ -0,0 +1,25 @@
+signals_trap_with_arg() {
+    func="$1" ; shift
+    for sig ; do
+        echo "$func $sig"
+        trap "$func $sig" "$sig"
+    done
+}
+
+signals_wait_forever() {
+    while true
+    do
+        tail -f /dev/null & wait ${!}
+    done
+}
+
+signal_name_to_number() {
+    SIGNAME="$1"
+    trap -l | sed -nr "s/.*\b([0-9]+)\) $SIGNAME.*/\1/p"
+}
+
+signal_return_val() {
+    SIGNAME="$1"
+    SIGNUM=$(signal_name_to_number ${SIGNAME})
+    echo "128 + $SIGNUM" | bc
+}