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Subject: Re: Cygwin package search and cygcheck -p urlencoding still broken on
 new web server
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Date: Thu, 16 Jul 2020 20:48:39 +0200
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From: Marco Atzeri via Cygwin <cygwin@cygwin.com>
Reply-To: Marco Atzeri <marco.atzeri@gmail.com>
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On 16.07.2020 15:42, Jon Turney wrote:
> On 16/07/2020 08:44, Marco Atzeri via Cygwin wrote:
>> On 16.07.2020 06:25, Brian Inglis wrote:
>>> On 2020-07-15 14:13, Marco Atzeri via Cygwin wrote:
>>>> Problem: I want to search for
>>>>     libssh/libssh.h
>>>> Using https://cygwin.com/packages/
>>>> If I put the name and press Go the URL is changed in
>>>> https://cygwin.com/cgi-bin2/package-grep.cgi?grep=libssh%2Flibssh.h&arch=x86_64 
>>>>
>>>> and the output is
>>>>     Found 0 matches for libsshx2Flibssh.h
>>>>                               ^^^
>>>> Instead if I modify directly the URL in:
>>>> https://cygwin.com/cgi-bin2/package-grep.cgi?grep=libssh/libssh.h&arch=x86_64 
> 
> 
> I think that this is an invalid URL, that just happens to work, so it's 
> correct that the link we produce is urlencoded.
> 
> (See e.g. https://en.wikipedia.org/wiki/Query_string#URL_encoding)
> 
>>>> Found 3 matches for libssh/libssh.h
>>>> ....
>>>> I guess that the current incapability is due to spurious urlencode in
>>>> cgi-bin2/package-grep.cgi
>>>> that is modifing the $param_grep
>>>> echo '<li><a href="package-cat.cgi?file='`urlencode
>>>> $partfile`'&amp;grep='`urlencode $param_grep`'">'$file'</a> - 
>>>> '$desc'</li>'
>>>> Could someone double check my guess ?
> 
> So it seems the urlencode is correct, but the urldecode isn't working.
> 
> I've applied a one-character change which appears to fix things.
> 
>> the git logs says that only Frank and Jon have recently worked on
>>
>>     cgi-bin2/package-grep.cgi
>>
>> I would like to double check any possible modification before proposing a
>> patch to change the web server...
> 
> This was actually fairly easy to reproduce locally, once I realized what 
> was going on:
> 
> $ export url="libssh%2Flibssh.h" ; printf '%b' "${url//%/\x}"
> libsshx2Flibssh.h
> 
> $ export url="libssh%2Flibssh.h" ; printf '%b' "${ur//%/\\x}"
> libssh/libssh.h

Thanks Jon

now the search works fine also with cygcheck -p

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