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Date: Thu, 4 Jun 2015 22:12:47 +0300
From: Shinnok <admin@...nnok.com>
To: "john-dev@...ts.openwall.com" <john-dev@...ts.openwall.com>
Subject: Re: [john-core] Getting John's stdout unbuffered for Johnny
> On Jun 1, 2015, at 6:45 PM, Shinnok <admin@...nnok.com> wrote:
>
>
>
>> On 01 Jun 2015, at 13:02, Solar Designer <solar@...nwall.com> wrote:
>>
>>> On Mon, Jun 01, 2015 at 09:30:42AM +0300, Shinnok wrote:
>>>> On May 27, 2015, at 10:56 PM, magnum <john.magnum@...hmail.com> wrote:
>>>> As far as I'm aware it treats input as a TTY if it is indeed a TTY, nothing weird about that. It doesn't default to reading candidates, there's an option for that.
>>>
>>> If that's not the case, then maybe we need _IONBF for stdin on JtR for the non-tty and non stdin cases too. I can't get a char from Johnny to JtR.
>>
>> What char are you trying to send and why? I guess you're doing this to
>> trigger the status line, or you're sending 'q' to have it quit gracefully,
>> right? If so, the first hurdle is that currently JtR would expect that
>> char to come from its tty, not from stdin.
>>
>
> Yes I'm expecting status lines(from any char besides q). Quitting via q is interesting too, but has less potential now that we've handled proper termination on Windows.
> So if we're not in tty and not in stdin candidate mode, what does John do exactly on std input.. Nothing?
>
Bump.
After some more thought, we do have to figure out and start working on a solution for both stdout and stdin. For the latter, if we take into consideration the concurrent cracking sessions feature, both of these:
1. kill process group on *nix for FORK case
2. ConsoleCtrlEvent CTRL_C_EVENT on Windows
Will fail dramatically by killing all spawned JtR attack sessions. So for the future, the ability to send q to a JtR session is critical, amongst other needs.
Shinnok
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