post_install() {
  if ! getent group privoxy &>/dev/null; then
    groupadd -g 42 privoxy >/dev/null
  fi
  if ! getent passwd privoxy &>/dev/null; then
    useradd -c "Privoxy" -u 42 -g privoxy -G adm -d /var/spool/privoxy -s /bin/nologin privoxy >/dev/null
  fi
  chown -R privoxy:privoxy /etc/privoxy /var/log/privoxy
  if [ ! -d /var/spool/privoxy ]; then
    install -dm0770 -o privoxy -g privoxy /var/spool/privoxy
  fi
  if ! groups privoxy | grep adm &>/dev/null; then
    gpasswd -a privoxy adm >/dev/null
  fi
  privoxy_shell=$(getent passwd privoxy | cut -d: -f7)
  if [ "$privoxy_shell" != '/bin/nologin' ]; then
    chsh -s /bin/nologin privoxy &>/dev/null
  fi
}

post_upgrade() {
  post_install
}

post_remove() {
  if getent passwd privoxy &>/dev/null; then
    userdel privoxy >/dev/null
  fi
  if getent group privoxy &>/dev/null; then
    groupdel privoxy >/dev/null
  fi
  rm -rf var/spool/privoxy
}