linux-kernel - Re: [Orinoco-users] linux-firmware binary corruption with gitweb

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Date:	Wed, 04 Mar 2009 23:52:09 +0000
From:	Dave <kilroyd@...glemail.com>
To:	Jakub Narebski <jnareb@...il.com>
CC:	Pavel Roskin <proski@....org>, git@...r.kernel.org,
	linux-kernel@...r.kernel.org, orinoco-users@...ts.sourceforge.net,
	dwmw2@...radead.org
Subject: Re: [Orinoco-users] linux-firmware binary corruption with gitweb

Jakub Narebski wrote:
> Dave <kilroyd@...glemail.com> writes:
>>> My strong impression is that the recoding takes place on the server.  I
>>> think the bug should be reported to the gitweb maintainers unless it a
>>> local breakage on the kernel.org site.
>> Thanks Pavel.
>>
>> I just did a quick scan of the gitweb README - is this an issue with the
>> $mimetypes_file or $fallback_encoding configurations variables?
> 
> First, what version of gitweb do you use? It should be in 'Generator'
> meta header, or (in older gitweb) in comments in HTML source at the
> top of the page.

Not sure where I'd find the meta header, but at the top of the HTML:

<!-- git web interface version 1.4.5-rc0.GIT-dirty, (C) 2005-2006, Kay
Sievers <kay.sievers@...y.org>, Christian Gierke -->
<!-- git core binaries version 1.6.1.1 -->

> Second, the file is actually sent to browser 'as is', using binmode :raw
> (or at least should be according to my understanding of Perl). And *.bin
> binary file gets application/octet-stream mimetype, and doesn't send any
> charset info. git.kernel.org should have modern enough gitweb to use this.
> Strange...

Dug around gitweb.perl in the main git repo. Then looked at the
git/warthog9/gitweb.git repo (after noting the Git Wiki says kernel.org
is running John Hawley's branch).

One notable change to git_blob_plain:

        undef $/;
        binmode STDOUT, ':raw';
-        print <$fd>;
+        #print <$fd>;
+        $output .= <$fd>;
        binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
        $/ = "\n";

        close $fd;
+
+        return $output;

If that's the code that's running, doesn't that mean the output mode
change doesn't impact the concatenation to $output? So the blob gets utf
encoding when actually printed.


Regards,

Dave.
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