#!/bin/sh

set -e

mv_init () {
  echo -n "    Renaming to /etc/init.d/amavis.dpkg-old... "
  mv /etc/init.d/amavis /etc/init.d/amavis.dpkg-old
  echo "done."
}

if [ "$1" = install -o "$1" = upgrade ]; then
  dpkg-divert --quiet --package amavisd-cn --rename \
    --divert /etc/init.d/amavis.amavisd-new /etc/init.d/amavis

  # link not in package because woody's dpkg behaves strange when it is
  if [ ! -h /etc/init.d/amavis ]; then
    if [ -e /etc/init.d/amavis ]; then
      echo "CN: Found unknown file at /etc/init.d/amavis."
      mv_init
    fi
    ln -s amavisd-cn /etc/init.d/amavis
  elif ! readlink /etc/init.d/amavis | grep -q '^amavisd-cn$'; then
    # Symlink in place, but does it point to us?
    echo "CN: Shouldn't happen: found strange /etc/init.d/amavis link."
    mv_init
    ln -s amavisd-cn /etc/init.d/amavis
  fi
fi