Bug #78183 [Fbk]: finfo_file shows wrong mime-type for .tga file

From: Date: Fri, 21 Jun 2019 06:28:02 +0000
Subject: Bug #78183 [Fbk]: finfo_file shows wrong mime-type for .tga file
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-221428@lists.php.net to get a copy of this message
Edit report at https://bugs.php.net/bug.php?id=78183&edit=1

 ID:                 78183
 Updated by:         krakjoe@php.net
 Reported by:        dev at jdoubleu dot de
 Summary:            finfo_file shows wrong mime-type for .tga file
 Status:             Feedback
 Type:               Bug
 Package:            Filesystem function related
 Operating System:   Linux
 PHP Version:        7.2.19
 Block user comment: N
 Private report:     N

 New Comment:

Ah, I still had this page open from yesterday, and saw your comment after I posted analysis.

I'll take another look ...


Previous Comments:
------------------------------------------------------------------------
[2019-06-21 06:25:39] krakjoe@php.net

I cannot reproduce this error, in addition, our use of the underlying API (magic_stream)
doesn't seem to allow us to cause this, the only thing I can think of is that maybe the magic
database is somehow corrupted, but this seems highly unlikely.

Running the script as it was is not possible from my location, and so probably the same is true for
others.

I suggest you upload the image to a globally accessible location, and suggest you expand the test
script to include buffer (string) and stream (resource) usages.

------------------------------------------------------------------------
[2019-06-19 16:29:46] dev at jdoubleu dot de

I created a repository on github which tests this bug against PHP 7.2, 7.3 and 7.3RC1 inside docker
containers: https://github.com/jdoubleu/php-bug-78183

The issue only affects PHP 7.2

------------------------------------------------------------------------
[2019-06-19 15:51:03] dev at jdoubleu dot de

Description:
------------
The finfo_file() method does not return the correct mime-type for .tga files.

Test script:
---------------
ini_set('user_agent', 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36
(KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36');

$src = fopen('http://people.math.sc.edu/Burkardt/data/tga/earth.tga',
'r');
$dest = fopen('image.tga', 'w');
stream_copy_to_stream($src, $dest);

print(finfo_file(finfo_open(FILEINFO_MIME_TYPE), 'image.tga'));
// => image/x-tgaimage/x-tga

Expected result:
----------------
"image/x-tga"

Actual result:
--------------
"image/x-tgaimage/x-tga"


------------------------------------------------------------------------



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Edit this bug report at https://bugs.php.net/bug.php?id=78183&edit=1


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