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[Installer] Check for running instances with the Restart Manager probe (#7671)
* [Installer] Check for running instances with the Restart Manager probe

The running-instance guard was built on powershell.exe started from the
32-bit NSIS stub, which is the 32-bit Windows PowerShell: its Get-Process
cannot read the path of a 64-bit process, so a running 64-bit Cockatrice
was reported as not running, the update went ahead, and the purge then
failed on the DLLs that instance still had mapped.

Use tools/installer-holder-probe instead - the same Restart Manager lookup
the abort path already had - before anything is replaced and in the
uninstaller as well. It is bitness-agnostic, so the Sysnative and WMI
fallbacks are gone.

The guard looks only at the payload, asks Cockatrice to close once by
itself (WM_CLOSE, the same request as the window's close button) and then
offers close again / retry after closing by hand / cancel for whatever the
close cannot reach - Oracle writes the card database in place, Servatrice
has no window - without force-stopping anything. A failed purge offers the
same close-and-retry, tries one last purge when nobody is named, and every
dialog shows in every mode: a silent reinstall stays silent until
something goes wrong.

* [Installer] Name processes running from the install directory

The running-instance guard answers from the Restart Manager, which reports
who has a file open. A running instance does not have to have one open: its
own image and the modules it loaded are mapped into it rather than opened by
it, and a mapping is not reliably reported. That is the state the probe was
added for - every DLL still on disk, an instance running from the directory,
and "nothing is holding them any more" as the answer.

A guard built on file handles alone is blind to exactly that instance, so it
passes, the purge fails, the holder lookup after it names nobody either, and
the install ends in a warning that no running program was found: no close is
attempted and no retry is offered. A manual install with another instance
open never asks it to close at all.

Name every process whose image lives in the directory being replaced as
well, with the same bitness-safe QueryFullProcessImageNameW the probe
already uses to label its holders. The image lookup is listed first - it is
the instance the user is asked to close - and the Restart Manager entries
follow with the pids already named dropped, so the close still reaches
everything that holds a file. A Restart Manager call that fails only makes
the probe unable to answer when the image lookup named nobody either.

Ask instead of dead-ending when the probe cannot answer at all: Retry checks
again, Ignore carries on, Abort cancels, in the installer and the uninstaller
alike, and the abort dialog says the check failed instead of claiming no
running program was found.

The Windows CI probe check covers the new lookup with a process started from
the directory that holds no file open.

* [Installer] Offer to wait again when the launcher has not exited

A client that is still closing after 60 s is usually not hung: it is showing
its own "quit anyway?" confirmation for an unsaved deck, an open game or a
card database update, and the user is the one who has to answer it. The
installer answered that with a plain warning and stopped, so the only way
forward was to close Cockatrice by hand and run the update again - which on
an in-app update means finding the downloaded installer.

Ask instead: Retry brings the client to the front, asks it to close again
(WM_CLOSE, nothing forced) and keeps waiting on its handle, Cancel stops as
before. There is no "install anyway" answer because a live process has its
image and Qt DLLs mapped, so writing the payload over them is the broken
install this wait exists to prevent - and the guard that runs right after
names the same process by its image path and stops there, so ignoring would
only move the same question a moment later.

* [Installer] Ask about a launcher that has not exited after ten seconds

A minute of silence is a long time to sit in front of an installer that has no
window yet, and the case it is waiting for is not a slow flush: a client that
started an update exits in well under a second, so a minute means it is almost
always showing its own "quit anyway?" confirmation with nobody looking at it.

Wait ten seconds for the first question instead, and the full grace for the
ones after it. The normal path is untouched - WaitForSingleObject returns as
soon as the handle signals, so a client that exits in 200 ms still costs 200
ms - and answering the first question once does not turn into a stream of
prompts while the user is in Cockatrice's window.

---------

Co-authored-by: Lukas Brübach <Bruebach.Lukas@bdosecurity.de>
2026-10-26 19:25:10 +01:00
..
installer-holder-probe [Installer] Check for running instances with the Restart Manager probe (#7671) 2026-10-26 19:25:10 +01:00
generate_qt_mappings.py [Tooling] Add IWYU Qt6 mapping, generator, and runner script (#7454) 2026-10-08 11:17:01 +02:00