#!/bin/sh
#------------------------------------------------------------------------------
# /opt/etc/usb.startup
# By Francesco Luminaria - http://www.luminaria.cc
#
# V. 1.1 - 2011/02/01
#		- Moved file from /opt to /opt/etc
#		- Run only executable "startup" and "stop" scripts
#
# Based on the standard dd-wrt startup script for Samba3
# from the "Kong Mod" for Netgear WNR3500L
#
# startup script for dd-wrt on Netgear WNR3500L
#------------------------------------------------------------------------------

# turn the WPS light ON
gpio enable 1

# set path to include optware binaries
echo "export PATH=$PATH:/opt/bin:/opt/sbin" > /tmp/root/.profile
export PATH=$PATH:/opt/bin:/opt/sbin


# run optware startup scripts
for I in `/bin/ls /opt/etc/config/*.startup`
do
	if [ -x "$I" ]; then
		sh $I
	fi
done

# check if temp config directory exists or create it
if [ ! -d /tmp/etc/config ]; then
  mkdir -p /tmp/etc/config
fi

# create the usbunplug.sesbutton script in /tmp/etc/config
USB_OFF=$( cat <<EOF
#!/bin/sh

# blink the WPS led n times on a Netgear WNR3500L
_blink()
{
  _loop=1

  while [ \$_loop -lt \$1 ]
  do
    gpio disable 1
    usleep 250000
    gpio enable 1
    usleep 250000

    _loop=\`expr \$_loop + 1\`
  done
}

# check if x directory is mounted
# returns 1 if mounted, 0 if not
_check()
{
  mount | grep \$1 >/dev/null

  if [ "\$?" -eq "0" ]; then
    # mounted
    return 1
  else
    # not mounted
    return 0
  fi
}

echo "creating lock file..."
# check if the same script is already running
if [ -e /tmp/unplug_ses_running ]; then
  exit
fi
touch /tmp/unplug_ses_running

echo "stopping optware services..."
# run optware stop scripts
for I in \`/bin/ls /opt/etc/config/*.stop\`
do
	if [ -x "\$I" ]; then
	echo "stopping \$I"
	sh \$I
	_blink 2
  fi
done

_blink 5

check_opt='/opt'
test_opt=1
check_mnt='/mnt'
test_mnt=1

retries=1

while [ \$retries -le 10 ]
do
  echo "unmount loop n. \$retries"
  _blink 2

  echo "unmounting /mnt"
  umount /mnt
  echo "unmounting /opt"
  umount -rl /opt

  _blink 5

  _check \$check_opt
  test_opt=\$?

  _check \$check_mnt
  test_mnt=\$?

  if [ "\$test_opt" -eq "1" ]; then
    # /opt is still mounted
    echo "/opt still mounted"
    _blink 3
    retries=\`expr \$retries + 1\`

  elif [ "\$test_mnt" -eq "1" ]; then
    # /mnt is still mounted
    echo "/mnt still mounted"
    _blink 3
    retries=\`expr \$retries + 1\`

  else
    # everything is unmounted
    echo "unmount finished"
    _blink 3
    gpio disable 1

    echo "removing lock file"
    rm /tmp/unplug_ses_running

    echo "end"
    # end the script
    exit

  fi

  _blink 5
done

# usb unmount failed
echo "usb unmount failed"
gpio enable 1

echo "removing lock file"
rm /tmp/unplug_ses_running

echo "end"

EOF
)

echo "$USB_OFF" > /tmp/etc/config/usbunplug.sesbutton
# sesbutton script must be executable by everyone
chmod 777 /tmp/etc/config/usbunplug.sesbutton