Add web server control script (#1714)

firmware_mod/controlscripts/lighttpd

@@ -0,0 +1,51 @@
+#!/bin/sh
+PIDFILE="/run/lighttpd.pid"
+
+## Create a certificate for the webserver
+if [ ! -f /system/sdcard/config/lighttpd.pem ]; then 
+  export OPENSSL_CONF=/system/sdcard/config/openssl.cnf 
+  /system/sdcard/bin/openssl req -new -x509 -keyout /system/sdcard/config/lighttpd.pem -out /system/sdcard/config/lighttpd.pem -days 365 -nodes -subj "/C=DE/ST=Bavaria/L=Munich/O=.../OU=.../CN=.../emailAddress=..."
+  chmod 400 /system/sdcard/config/lighttpd.pem 
+  echo "Created new certificate for webserver"
+fi
+
+status()
+{
+  pid="$(cat "$PIDFILE" 2>/dev/null)"
+  if [ "$pid" ]; then
+	# Prints PID: $pid if exists and returns 0(no error) else returns 1(error condition)
+	kill -0 "$pid" >/dev/null && echo "PID: $pid" || return 1
+  fi
+}
+
+start()
+{
+  if [ "$(status)" != "" ]; then
+	echo "A web server is already running, please stop it or reboot"
+  else
+	echo "Starting web server..."
+	if [ ! -f /system/sdcard/config/lighttpd.conf ]; then 
+	  cp /system/sdcard/config/lighttpd.conf.dist /system/sdcard/config/lighttpd.conf
+	fi
+	/system/sdcard/bin/lighttpd -f /system/sdcard/config/lighttpd.conf
+  fi
+}
+
+stop()
+{
+  pid="$(cat "$PIDFILE" 2>/dev/null)"
+  if [ "$pid" ]; then
+        sleep 1
+	kill "$pid"
+	rm "$PIDFILE" 1> /dev/null 2>&1
+  fi
+}
+
+if [ $# -eq 0 ]; then
+  start
+else
+  case $1 in start|stop|status)
+	$1
+	;;
+  esac
+fi