Doc #74411 [Opn->Fbk]: SplFileInfo::getRealPath() returns false if containing folder is unreadable
Edit report at https://bugs.php.net/bug.php?id=74411&edit=1
ID: 74411
Updated by: ab@php.net
Reported by: miklcct at gmail dot com
Summary: SplFileInfo::getRealPath() returns false if
containing folder is unreadable
-Status: Open
+Status: Feedback
Type: Documentation Problem
Package: Filesystem function related
Operating System: Windows 10
PHP Version: 7.1.3
Block user comment: N
Private report: N
New Comment:
What are the exact ACLs on the folder and the file?
Thanks.
Previous Comments:
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[2017-04-11 14:02:11] miklcct at gmail dot com
I don't think it is a documentation issue, because
1. I'm using SplFileInfo, not bare functions. What the bare functions do is completely
irrelevant to me.
2. Even it replicates the behaviour of that function, I have only denied the list content (read)
permission but not traverse folder (execute) permission.
------------------------------------------------------------------------
[2017-04-11 13:51:47] cmb@php.net
It seems to me that is rather a documentation issue, as for
realpath() it is already noted[1] that:
| The running script must have executable permissions on all
| directories in the hierarchy, otherwise realpath() will return
| FALSE.
[1] <http://php.net/manual/en/function.realpath.php#refsect1-function.realpath-returnvalues>
------------------------------------------------------------------------
[2017-04-11 08:18:52] miklcct at gmail dot com
Description:
------------
On Windows, SplFileInfo::getRealPath() returns false if the containing folder is not readable even
if the file itself is readable. This breaks in typical usage scenario where a SplFileInfo object is
constructed using an uploaded file in temporary folder on Windows because the temporary folder in
Windows is not readable by default, but creating files are allowed inside.
To reproduce, follow the below steps:
1. Make directory C:\dir
2. Make file C:\dir\file and put some text inside
3. Run the script, ensure that the second var_dump returns the path
4. Add an NTFS permission entry on C:\dir saying "deny everyone on this folder only advanced
permission list folder / read data"
5. Run the script again
Test script:
---------------
<?php
$path = 'C:\dir\file';
$file = new SplFileInfo($path);
var_dump(file_get_contents($path));
var_dump($file);
var_dump($file->getRealPath());
Expected result:
----------------
Output similar to the below on both runs:
M:\splfileinfo_bug.php:4:
string(5) "test
"
M:\splfileinfo_bug.php:5:
class SplFileInfo#1 (2) {
private $pathName =>
string(11) "C:\dir\file"
private $fileName =>
string(4) "file"
}
M:\splfileinfo_bug.php:6:
string(11) "C:\dir\file"
Actual result:
--------------
After denying permission, the script outputs:
M:\splfileinfo_bug.php:4:
string(5) "test
"
M:\splfileinfo_bug.php:5:
class SplFileInfo#1 (2) {
private $pathName =>
string(11) "C:\dir\file"
private $fileName =>
string(4) "file"
}
M:\splfileinfo_bug.php:6:
bool(false)
Note that the file is readable but SplFileInfo::getRealPath() returns false.
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=74411&edit=1
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