#!/bin/bash
# This script works with a tar archvie
# called upgrade.bin in either /var/volatile
# or on the SD card.
#
# This is what the tar file upgrade file
# should look like to create an ipk upgrade
# file.  IPK files should be in all,
# arm926ejste, and mtcdt (for mtcdt)
cat <<'!EOF' >/dev/null
.
|-- install_list.txt
|-- install_list.txt.md5
|-- install.sh*
|-- install.sh.md5
|-- local.conf
|-- local.conf.md5
|-- model
|-- repo/
|   |-- arm926ejste/
|   |   |-- busybox_1.24.1-r0.mlinux2.mlinux2.1_arm926ejste.ipk
|   |   |-- busybox-hwclock_1.24.1-r0.mlinux2.mlinux2.1_arm926ejste.ipk
|   |   |-- busybox-ifplugd_1.24.1-r0.mlinux2.mlinux2.1_arm926ejste.ipk
|   |   |-- busybox-syslog_1.24.1-r0.mlinux2.mlinux2.1_arm926ejste.ipk
|   |   |-- busybox-udhcpc_1.24.1-r0.mlinux2.mlinux2.1_arm926ejste.ipk
|   |   |-- initscripts_1.0-r155.3.40.0_arm926ejste.ipk
|   |   |-- initscripts-functions_1.0-r155.3.40.0_arm926ejste.ipk
|   |   |-- Packages
|   |   |-- Packages.gz
|   |   `-- Packages.stamps
|   `-- Packages
!EOF
#
# The tarball must be called upgrade.bin.
#
# The file /var/volatile/do_flash_upgrade must exist and
# be owned by root.
#
# The tar file, upgrade.bin must be either in
# /var/volatile/flash-upgrade or
# /media/card/flash-upgrade
#
# Note that when this script is started, the
# tar file is already unpacked, since this script
# is in the tarball.

# This script assumes that the rootfs and maybe /var
# are writable.  For MTR, we may need to set
# root and var to read/write

NAME=install.sh
echo "$NAME starting"

umount_all() {
  if [[ $1 == "error" ]] ; then
    echo "Cannot continue"
    err_leds
    sleep 10
  fi
  echo "Deactivating swap..."
  swapoff -a

  # We leave /proc mounted.
  echo "Unmounting local filesystems..."
  grep -q /mnt/ram /proc/mounts && mount -o remount,ro /mnt/ram
  umount -f -a -r > /dev/null 2>&1

  mount -o remount,ro /
  ${up_dir}/upgrade-reboot

  # Should not get here normally
  echo "upgrade-reboot failed"
  /sbin/reboot
  exit 1
}
err_leds() {
  led_dir=/sys/class/leds
  # blink all programmable LEDs except status
  leds=$(ls $led_dir/ | grep -v status)
  nleds=$(echo "$leds" | wc -w)

  # turn LEDs off
  for led in $leds; do
      echo "timer" > $led_dir/$led/trigger
      echo 0  > $led_dir/$led/delay_off
  done

  int=200
  total=$(( int * (nleds+1) ))
  on=$(( total - int ))
  off=$(( total - on ))

  # make a pattern
  for led in $leds; do
      echo "$on"  > $led_dir/$led/delay_on
      echo "$off"  > $led_dir/$led/delay_off
  done
  sleep 5
}
flash_dir="$1"
up_dir="${flash_dir}/flash-upgrade"
if ! [[ -d ${up_dir} ]] ; then
    echo "\"${up_dir}\" is not present"
    umount_all error
fi
echo "ls -l ${flash_dir}"
ls -l ${flash_dir}
echo "ls -l ${up_dir}"
ls -l "${up_dir}"
cd "${up_dir}"
if ! md5sum -c local.conf.md5 >/dev/null ; then
   echo "md5sum of local.conf is bad"
    umount_all error
fi

# opkg needs /tmp, so recreate it.
# On a Conduit, this is always /var/volatile
mkdir -m 01777 /var/volatile/tmp
localcnf="${up_dir}/local.conf"
echo "Local configuration file: ${localcnf}"
echo mounts ...
cat /proc/mounts
echo "Update package list ... /usr/bin/opkg -f ${localcnf} update"
/usr/bin/opkg -f "${localcnf}" update
echo "List upgradable packages ... /usr/bin/opkg -f ${localcnf} list-upgradable"
/usr/bin/opkg -f "${localcnf}" list-upgradable
echo "Do package upgrade /usr/bin/opkg -f ${localcnf} upgrade"
/usr/bin/opkg -f "${localcnf}" upgrade
pkglist_file="install_list.txt"
if [[ -r ${pkglist_file} ]] ; then
    if ! md5sum -c ${pkglist_file}.md5 ; then
        echo "md5sum bad on ${pkglist_file}"
        umount_all error
    fi
    OIFS="${IFS}"
    IFS=$'\n'
    for p in $(cat ${pkglist_file}) ; do
        echo /usr/bin/opkg -f "${localcnf}" install $p
        /usr/bin/opkg -f "${localcnf}" install $p
    done
    IFS="${OIFS}"
fi
echo "Rebooting..."

umount_all ok
echo "upgrade-reboot failed"
exit 1