#!/bin/sh

set -e

[ "$DEBIAN_SCRIPT_DEBUG" ] && set -vx

case "$1" in
  configure)
    # continue below
  ;;

  abort-upgrade|abort-remove|abort-deconfigure)
    exit 0
  ;;

  *)
    echo "postinst called with unknown argument \`$1'" >&2
    exit 0
  ;;
esac

libdir="/usr/lib/jvm/java-6-sun/jre"

if [ -x /usr/sbin/chpax ]; then
  chpax=/usr/sbin/chpax
elif [ -x /sbin/chpax ]; then
  chpax=/sbin/chpax
elif uname -r | grep -q grsec; then
  # no chpax found in default places
  echo "Warning: Grsecurity kernel detected but no chpax found."
  echo "Your java applications might not work until you run"
  echo
  echo "chpax -rs $libdir/bin/java"
  echo
  echo "Possibly even"
  echo
  echo "chpax -rs $libdir/bin/\*"
  echo
fi

if [ ! -x $libdir/bin/java ]; then
  echo "java not found in $libdir/bin. _Very_ strange."
  exit 0
fi

if [ "$chpax" ] && \
   ! $chpax -v $libdir/bin/java | egrep -q "flags for $libdir/bin/java \(...r.s\)"; then
  $chpax -rs $libdir/bin/java
fi