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Date: Wed, 13 May 2015 15:52:20 +0300
From: Shinnok <>
Subject: Re: problem with signal handling in core john (was: [core john] [Johnny] Windows event loop)

> On May 13, 2015, at 3:27 PM, Solar Designer <> wrote:
> Aleksey, Shinnok -
> On Wed, May 13, 2015 at 02:31:18PM +0300, Aleksey Cherepanov wrote:
>> The possible problems:
>> - SetConsoleCtrlHandler(NULL, FALSE); may be needed to enable ctrl-c
>> correctly, I guess john core wants to handle ctrl-c,
> I haven't been following the discussion closely, I'm not into Windows
> programming, and IIRC it's been something between 15 and 20 years since
> I put the SetConsoleCtrlHandler() calls currently in signals.c in there.
> So I don't really know whether/which change might be needed.  However,
> last time I checked, which wasn't that long ago, Ctrl-C still worked
> fine to correctly terminate "john" on Windows.  Does it no longer work
> in console on some combination of Windows and Cygwin versions?  Or is
> the problem specific to just usage from Johnny?

The patch maintains event processing(including CTRL_C) under the console(CMD) while also allowing for Johnny to properly terminate JtR instances via the same CTRL_C_EVENT.


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