post_install() {
  getent group tpe >/dev/null || groupadd -g 200 tpe
  getent group audit >/dev/null || groupadd -g 201 audit
  getent group socket-deny-all >/dev/null || groupadd -g 202 socket-deny-all
  getent group socket-deny-client >/dev/null || groupadd -g 203 socket-deny-client
  getent group socket-deny-server >/dev/null || groupadd -g 204 socket-deny-server
}

post_upgrade() {
  post_install
}

post_remove() {
  for group in tpe audit socket-deny-server socket-deny-client socket-deny-all; do
    getent group $group >/dev/null && groupdel $group
  done
}
