Re: [PATCH] gitweb: Support comparing blobs (files) with different names

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On Sat, Mar 31, 2007 at 01:55 +0200, Jakub Narebski wrote:
> On Wed, Mar 28, 2007, Martin Koegler wrote:
> 
>> I created a blob with a "strange" filename: &()=!"§$%[<>]*#+_;.
>> In the result of the blob view, the " is not escaped in the filename in the header
>> and a strange content type is returned:
>> 
>> $ telnet localhost 80
>> Trying 127.0.0.1...
>> Connected to localhost.
>> Escape character is '^]'.
>> GET /gitweb/gitweb.cgi?p=t/.git;a=blob;f=%26()%3D%21%22%A7%24%25%5B%3C%3E%5D%2A%23%2B_%3B.;hb=7bfed2588bee66b33db544830606fa6606478fd9 HTTP/1.0
>> 
>> HTTP/1.1 200 OK
>> Date: Wed, 28 Mar 2007 19:55:36 GMT
>> Server: Apache
>> Content-disposition: inline; filename="&()=!"§$%[<>]*#+_;."
>> Expires: Thu, 29 Mar 2007 19:55:39 GMT
>> Connection: close
>> Content-Type: application/vnd.mif
>> 
>> xx
> 
> There are two separate things. 
> 
> First is not escaped filename in HTTP header. There was some discussion
> about this, and even patch by Luben Tuikov which added to_qtext 
> subroutine to deal with escaping in HTTP (which has diferent rules than
> escaping in HTML, or in HTML attributes)
>  * gitweb: using quotemeta
>    http://thread.gmane.org/gmane.comp.version-control.git/28050/
>  * [PATCH] gitweb: Convert Content-Disposition filenames into qtext
>    http://thread.gmane.org/gmane.comp.version-control.git/28437
> But the patch was newer accepted; either lost in the noise, or in lack
> of summary to the discussion.

Junio, do you remember by chance why this patch was dropped?

> Second is detecting file as binary (for text files we always return
> HTML), and content type set. Gitweb checks mimetype of a file (based
> on extension, mainly) by default using /etc/mime.magic, and if it is
> neither text/* nor HTML images (png, jpg, gif) it uses "blobdiff_plain"
> view. Perhaps instead of just calling git_blob_plain($mimetype) we
> should do a redirect (but then how to pass detected mimetype?). It looks
> like there is an error with mimetype detection: could you tell me the
> line with "application/vnd.mif" in your /etc/mime.types?


Unfortunately trying to find the source of this error failed (perhaps
due to name of file slightly changed by accident), and I get no errors.
WORKSFORME aka SAA#1 (Standard Answer of Admin #1: Works for me).

I use the following script to debug errors in gitweb:

-- >8 ------------------------------------
#!/bin/sh

export GATEWAY_INTERFACE="CGI/1.1"
export HTTP_ACCEPT="*/*"
export REQUEST_METHOD="GET"
export QUERY_STRING=""$1""
export PATH_INFO=""$2""

ddd "/var/www/cgi-bin/gitweb/gitweb.cgi"
-- >8 ------------------------------------

-- 
Jakub Narebski
Poland
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