#!/bin/sh

test $DEBIAN_SCRIPT_DEBUG && set -v -x

DO_WHAT=$1
VERSION=$2

set -e

case "$DO_WHAT" in
  configure)
    echo "Creating dtn user..."
    adduser --system dtn || true

    echo "Fixing ownership and permissions on /var/dtn..."
    chown -R dtn   /var/dtn
    chmod -R o-wrx /var/dtn
    chmod -R g-w   /var/dtn
    chmod -R g+rX  /var/dtn
    chmod -R u+wrX /var/dtn

    initdb=y
    if [ ! $VERSION = "" ] ; then
      echo "Checking for old persistent data store..."
      find /var/dtn -type f > /dev/null 2>/dev/null
      if [ $? = 0 ] ; then
        echo
        echo "DTN data is still kept in /var/dtn. If you are "
        echo "upgrading to a new major release, the databases "
        echo "may not be compatible and the new daemon will fail "
        echo "to run. "
        echo ""
        echo -n "Do you want to clear the old database now and recreate it? [n] "
        read y
        if [ $y = "y" ] ; then
	    echo "Removing old database contents"
	    rm -rf /var/dtn/db
	    rm -rf /var/dtn/bundles
        else
            initdb=n
        fi
      fi
    fi
    
    if [ $initdb = y ] ; then
      echo "Initializing DTN persistent data store..."
      su -s /bin/sh -c "dtnd --init-db || true" dtn
    fi

    rm -f /var/log/dtnd.log || true
    ln -s /var/dtn/dtnd.log /var/log/dtnd.log || true
  ;;

  abort-upgrade|abort-remove|abort-deconfigure)
  ;;

  *)
    echo "postinst called with unknown argument \`$1'" >&2
    exit 1
  ;;
esac

#DEBHELPER#

exit 0