#!/bin/sh
### BEGIN INIT INFO
# Provides:
# Short-Description: Stock Firmware Detection and Upgrade
# Description:       Detect the firmware version of the stock firmware and process upgrades, based off atomcam_tools S32fwupdate.
### END INIT INFO

. /opt/wz_mini/wz_mini.conf

flash_copy() {
  size=`awk '{ if($1 == MTD ":") print ("0x" $2)/1024; }' MTD=${1##*/} /proc/mtd`
  echo "flash_copy $1 $2 ${size}"
  dd if=$1 of=/tmp/mtd bs=1k count=${size}
  [ $? != 0 ] && return

  flash_eraseall $2
  [ $? != 0 ] && return

  flashcp -v /tmp/mtd $2
  [ $? != 0 ] && return

  rm -f /tmp/mtd
}

flash_update() {
  FWGRADEUP=`awk '/FWGRADEUP=/ { gsub(/^.*=/, ""); print $0; }' /dev/mtd7`

  if [ "${FWGRADEUP}" = "kernel+app" ] ; then
    flash_copy /dev/mtd4 /dev/mtd1
    [ $? != 0 ] && return
    flash_copy /dev/mtd5 /dev/mtd3
    [ $? != 0 ] && return
    flash_eraseall /dev/mtd7
  fi

  if [ "${FWGRADEUP}" = "kernel+rootfs" ] ; then
    flash_copy /dev/mtd4 /dev/mtd1
    [ $? != 0 ] && return
    flash_copy /dev/mtd5 /dev/mtd2
    [ $? != 0 ] && return
    flash_eraseall /dev/mtd7
  fi

  if [ "${FWGRADEUP}" = "kernel" ] ; then
    flash_copy /dev/mtd4 /dev/mtd1
    [ $? != 0 ] && return
    flash_eraseall /dev/mtd7
  fi

  if [ "${FWGRADEUP}" = "rootfs" ] ; then
    flash_copy /dev/mtd5 /dev/mtd2
    [ $? != 0 ] && return
    flash_eraseall /dev/mtd7
  fi

  if [ "${FWGRADEUP}" = "app" ] ; then
    flash_copy /dev/mtd5 /dev/mtd3
    [ $? != 0 ] && return
    flash_eraseall /dev/mtd7
  fi
}

case "$1" in
	start)
		echo "#####$(basename "$0")#####"

		if [ -f /system/bin/app.ver ]; then
			echo "Current stock firmware version:"
			cat /system/bin/app.ver
		else
			echo "/system/bin/app.ver not found"
		fi

		if [-f /system/bin/liveMediaServer ]; then
			echo "WARNING: Stock RTSP firmware detected."
			echo "WARNING: The stock RTSP firmware is old, unmaintained, and insecure."
			echo "WARNING: Compatability with wz_mini is NOT guaranteed, and not supported"
		fi

		;;
	*)
		echo "Usage: $0 {start}"
		exit 1
		;;
esac