#31570 [Opn->Fbk]: PHP unable to resolve relative paths in __destruct() upon unloading page
ID: 31570
Updated by: sniper@php.net
Reported By: twadzilla at gmail dot com
-Status: Open
+Status: Feedback
Bug Type: Zend Engine 2 problem
Operating System: Redhat 9
PHP Version: 5CVS-2005-01-16
New Comment:
Please try using this CVS snapshot:
http://snaps.php.net/php5-latest.tar.gz
For Windows:
http://snaps.php.net/win32/php5-win32-latest.zip
Previous Comments:
------------------------------------------------------------------------
[2005-01-19 08:42:12] twadzilla at gmail dot com
The line in foo.php: $absolute = "/home/test/www/$abs";
should be: $absolute = "/home/test/www/$relative";
------------------------------------------------------------------------
[2005-01-16 14:43:11] twadzilla at gmail dot com
Description:
------------
PHP generates a warning inside a class destructor when you try to read
a file, because apparently it cannot resolve relative paths by the time
when the destructor is called for referenced objects.
When the open_basedir config is commented out, only the "include"
directive resolves the relative path; the other file-reading methods
fail.
When open_basedir is in effect, it causes all the methods to fail,
including the "include" directive.
The following issue is demonstrated at:
http://test.kneetoe.com/foo.php
http://test.kneetoe.com/foo.php.txt
(alternatively with more checks):
http://test.kneetoe.com/foo2.php
http://test.kneetoe.com/foo2.php.txt
I recommend that class destructors get executed before the ability to
resolve relative paths gets unloaded.
http://test.kneetoe.com/phpinfo.php
Reproduce code:
---------------
[httpd.conf]:
php_admin_value open_basedir /home/test/www
[/home/test/www/bar.html]:
Bar!
[/home/test/www/foo.php]:
class Foo {
function __destruct() {
$relative = 'bar.html';
$absolute = "/home/test/www/$abs";
echo "Absolute 'include': ";
include $absolute;
echo "Relative 'include': ";
include $relative;
echo "Absolute 'readfile': ";
readfile($absolute);
echo "Relative 'readfile': ";
readfile($relative);
}
}
print "<h2>Non-referenced (immediate destruction):</h2>";
new Foo;
print "<h2>Referenced (delayed destruction):</h2>";
$a = new Foo;
Expected result:
----------------
Non-referenced (immediate destruction):
Absolute 'include': Bar!
Relative 'include': Bar!
Absolute 'readfile': Bar!
Relative 'readfile': Bar!
Referenced (delayed destruction):
Absolute 'include': Bar!
Relative 'include': Bar!
Absolute 'readfile': Bar!
Relative 'readfile': Bar!
Actual result:
--------------
[[[open_basedir commented out]]]:
Non-referenced (immediate destruction):
Absolute 'include': Bar!
Relative 'include': Bar!
Absolute 'readfile': Bar!
Relative 'readfile': Bar!
Referenced (delayed destruction):
Absolute 'include': Bar!
Relative 'include': Bar!
Absolute 'readfile': Bar!
Relative 'readfile':
Warning: readfile(bar.html) [function.readfile]: failed to open
stream: No such file or directory in /home/test/www/foo.php on line 19
[[[open_basedir in effect]]]:
Non-referenced (immediate destruction):
Absolute 'include': Bar!
Relative 'include': Bar!
Absolute 'readfile': Bar!
Relative 'readfile': Bar!
Referenced (delayed destruction):
Absolute 'include': Bar!
Relative 'include':
Warning: Foo::__destruct() [function.--destruct]: open_basedir
restriction in effect. File(./bar.html) is not within the allowed
path(s): (/home/test/www) in /home/test/www/foo.php on line 13
Warning: Foo::__destruct(bar.html) [function.--destruct]: failed to
open stream: Operation not permitted in /home/test/www/foo.php on line
13
Warning: Foo::__destruct() [function.include]: Failed opening
'bar.html' for inclusion (include_path='.:/usr/local/lib/php') in
/home/test/www/foo.php on line 13
Absolute 'readfile': Bar!
Relative 'readfile':
Warning: readfile() [function.readfile]: open_basedir restriction in
effect. File(bar.html) is not within the allowed path(s):
(/home/test/www) in /home/test/www/foo.php on line 19
Warning: readfile(bar.html) [function.readfile]: failed to open
stream: Operation not permitted in /home/test/www/foo.php on line 19
------------------------------------------------------------------------
--
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