OPKG Package Updater

opkgupdater.sh

#!/bin/sh
#
# Opkg Updater v1.4 - Update OPKG packages flawlessly
# @author: Walter Purcaro <[email protected]>
#
###############################################################################

VERSION="1.4"

trap 'echo Exiting...' INT TERM

info() {
  echo "
  ╔═╗╔═╗╦╔═╔═╗┬ ┬┌─┐┌┬┐┌─┐┌┬┐┌─┐┬─┐
  ║ ║╠═╝╠╩╗║ ╦│ │├─┘ ││├─┤ │ ├┤ ├┬┘  Update OPKG packages flawlessly
  ╚═╝╩  ╩ ╩╚═╝└─┘┴  ─┴┘┴ ┴ ┴ └─┘┴└─  by Walter Purcaro <[email protected]>
  ####### Opkg Updater v$VERSION #######

  "
}

help() {
  info
  echo '  USAGE:
  opkgupdater.sh [COMMAND]


  COMMANDS:
  s <"cron time format">             Schedule start and exit
  s off                              Stop scheduled start and exit
  s status                           Show current scheduling and exit


  EXAMPLES:
  # Check for updates every 24 hours
  opkgupdater.sh schedule "0 */24 * * *"
  '
}

check() {
  if [ -z "$(which opkg)" ]
  then echo "OPKG Package Manager not found!" && return 1
  else
    ver="$(opkg --version | cut -d' ' -f3 | tr -d '.')"
    [ $ver -gt 018 ] && echo "Opkg Updater may not operate properly with OPKG Package Manager newer than v0.1.8 ."
  fi
}

schedule() {
  ABSPATH="$(pwd -P)/$(basename "$0")"
  cru a opkgupdater "$1 '$ABSPATH' start" && echo "Schedule added"
}

status() {
  CRUCMD="$(cru l | grep opkgupdater | cut -d"'" -f1)"
  if [ -n "$CRUCMD" ]
  then echo "Scheduled mode is ON by $CRUCMD"
  else echo "Scheduled mode is OFF"
  fi
}

stop() {
  status
  [ -n "$CRUCMD" ] && cru d opkgupdater && echo "Schedule deleted"
}

start() {
  check && [ $? -ne 0 ] && exit $?

  echo "Checking for Updates..."
  opkg update --verbosity=0

  PACKUPGLIST="$(opkg list-upgradable 2>/dev/null)"
  if [ -n "$PACKUPGLIST" ]
  then
    echo "Upgradable packages:"
    echo "$PACKUPGLIST"

    CONFILELIST="$(opkg list-changed-conffiles 2>/dev/null)"
    if [ -n "$CONFILELIST" ]
    then
      echo "Detected configuration files modified after installation:"
      echo "$CONFILELIST"
      echo "These files won't be overwritten!"
    fi

    echo "Upgrading packages..."
    UPGERR="/tmp/opkgupdater-uperr"
    UPGOUT="$(opkg upgrade 2>$UPGERR)"
    echo "$UPGOUT" | grep -v "Configuring"

    echo "Configuring packages..."
    CONFOUT="$(echo "$UPGOUT" | grep "Configuring")"
    if [ -n "$CONFOUT" ]
    then echo "$CONFOUT"
    else echo "No packages configured."
    fi

    if [ -s $UPGERR ]
    then
      echo "Detected installation errors:"
      tail -n +2 $UPGERR
    fi

    err=$(grep -c "opkg_install_pkg" $UPGERR)
    upg=$(echo "$UPGOUT" | grep -c "Upgrading")
    rm -f $UPGERR
    if [ "$err" -ge "$upg" -a -z "$CONFOUT" ]
    then
      echo "Upgrade Failed."
      exit 1
    else
      [ "$err" -ne 0 ] && echo "Some Packages can not be updated."
      echo "Upgrade Successfully Completed."
      echo "Cleaning up..."
      opkg remove lib* --autoremove 2>/dev/null
    fi
  else
    echo "No Packages marked for Update."
  fi
}

### MAIN ###
if [ $# -eq 0 ]
then
  info
  start | logger -s -t "OPKG[$$]"
else
  for arg in "$@"
  do
    case $arg in
      -h|--help|help)
                    help
                    exit 1
                    ;;
      info|version|--version)
                    info
                    exit 1
                    ;;
    esac
  done

  while [ $# -ne 0 ]
  do
    case $1 in
      s|schedule)
                    shift
                    if [ -n "$1" ]
                    then
                      if [ "$1" = "off" -o "$1" = "stop" ]
                      then stop
                      elif [ "$1" = "status" ]
                      then status
                      elif echo "$1" | grep -qE "[0-9,*/]+ [0-9,*/]+ [0-9,*/]+ [0-9,*/]+ [0-9,*/]+"
                      then schedule "$1"
                      else echo "Wrong time format argument"
                      fi
                      exit
                    else
                      echo "Missing time format argument"
                      help
                      exit 1
                    fi
                    ;;
      *)
                    echo "Invalid argument"
                    help
                    exit 1
                    ;;
    esac
    shift
  done
fi