SimpleDeFence 0.1.2 beta

SimpleDeFence 0.1.2 beta

A fix release. 0.1.1 should be replaced rather than kept: the service ran and
the firewall worked, but nothing could talk to it.

Fixes

• The control pipe refused every request. The service authorized a caller by
  impersonating it and only then read the request, which Windows does not
  permit - ImpersonateNamedPipeClient fails until the server has read from the
  pipe. The check therefore threw on every request, and a failure to establish
  who is calling is treated as a refusal, so the refusal was total. The service
  still reported itself as Running, which is why the symptom was a GUI that
  could not connect while asking whether the service was installed and running.
  The request is now read before the caller is authorized.
• The uninstall failed part-way through and rolled back. It asked the service
  to stop over that same pipe, ignored the answer, waited fifteen seconds and
  then failed the whole transaction - leaving the product registered and half
  removed, with stopping the service by hand in services.msc the only way out.
  It now checks the answer, falls back to the service control manager, and
  continues with removal rather than rolling back.
• The update descriptor advertised 0.1.0, which is below the 0.1.1 it was meant
  to supersede, so no installed client would ever have been offered an update.

Verified

• A clean install and a normal uninstall were run on a Windows 11 machine with
  no leftover configuration. The service starts, registers its firewall
  objects, and logs no exceptions for the whole cycle; the uninstall completes
  in about four seconds and removes the service, the product registration, the
  install directory and every firewall object.
• The GUI has still not been exercised on a real desktop. The control pipe was
  confirmed through the same client code the GUI uses, not through the window.

Known issues

• On a standard user account the GUI runs unprivileged and cannot command the
  service; it says so and offers to restart elevated.
• The installer is not code-signed.