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Mail Archives: cygwin/2022/08/31/08:16:10

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To: Jon Turney <jon DOT turney AT dronecode DOT org DOT uk>,
The Cygwin Mailing List
<cygwin AT cygwin DOT com>
Subject: RE: Does the Cygwin setup program do internal sanity checks on
startup?
Thread-Topic: Does the Cygwin setup program do internal sanity checks on
startup?
Thread-Index: Adi3+hHHhKMoiaL6R9m2krjgLkvOZgAqQWoAAACoiYAAAhyk0ACRyp2AAI9gDkA=
Date: Wed, 31 Aug 2022 12:14:35 +0000
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<c4261e67-f6ee-20e4-50f3-335783ba558b AT dronecode DOT org DOT uk>
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From: Brian Cowan via Cygwin <cygwin AT cygwin DOT com>
Reply-To: Brian Cowan <brian DOT cowan AT hcl DOT com>
Sender: "Cygwin" <cygwin-bounces+archive-cygwin=delorie DOT com AT cygwin DOT com>

Well, is it possible to use 7zip? It seems like you can do something like it in: https://superuser.com/questions/42788/is-it-possible-to-execute-a-file-after-extraction-from-a-7-zip-self-extracting-a

Not that I think this would help with heuristics, and some AV tools REALLY don't like executing things from users' temp directories. (Which .Net applications seem to like to do sometimes.)

Maybe have compressed and uncompressed installers?

Brian Cowan
HCL Software
Technical Specialist, ClearCase SWAT
brian DOT cowan AT hcl DOT com


-----Original Message-----
From: Cygwin <cygwin-bounces+brian.cowan=hcl DOT com AT cygwin DOT com> On Behalf Of Jon Turney
Sent: Sunday, August 28, 2022 11:46 AM
To: The Cygwin Mailing List <cygwin AT cygwin DOT com>
Subject: Re: Does the Cygwin setup program do internal sanity checks on startup?

[CAUTION: This Email is from outside the Organization. Unless you trust the sender, Don't click links or open attachments as it may be a Phishing email, which can steal your Information and compromise your Computer.]

On 25/08/2022 19:14, Brian Cowan via Cygwin wrote:
> And this was exactly it. I downloaded the latest UPX version, and it
> crashed on startup. I downloaded the Linux version on another host,
> copied the setup program to that host and extracted it there. NOW I
> can update Cygwin...

I wonder if UPX compression of setup makes as much sense now as it did
20+ years ago.

Not only does it (occasionally) generate problems like this, but also with malware detection heuristics.

OTOH, not using it would make setup ~4x larger.
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