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Request #48218 ZipArchive->open fails under some circumstances
Submitted: 2009-05-10 00:36 UTC Modified: 2010-06-21 10:28 UTC
Votes:1
Avg. Score:5.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:1 (100.0%)
From: mb at smartftp dot com Assigned: pajoye
Status: Assigned Package: Zip Related
PHP Version: * OS: *
Private report: No CVE-ID:
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 [2009-05-10 00:36 UTC] mb at smartftp dot com
Description:
------------
The ZIPArchive->open fails with error 11 when a zip file is opened that has just been created using ZIPArchive. 
The test code works as expected when running it under administrative privileges. However when running it under restricted access privileges the ZIPArchive->open function is unable to open the file. On the other side readfile() can successfully open the same file. My guess is that the ZipArchive->open functions tries to open the file using a mode other than just read.

Reproduce code:
---------------
<?php

$file = tempnam(sys_get_temp_dir(), 'zip');
print($file . "\n");

$create = new ZipArchive;
if($create->open($file, ZIPARCHIVE::CREATE | ZIPARCHIVE::OVERWRITE ))
{	
	for($i=0; $i<10; $i++)
	{
		$bogus = "fjewklfj23klfj23lkfj23l";
		$create->addFromString($i, $bogus);
	}
	
	if(!$create->close())
	{
		print("close failed");
	}
}						

$zip = new ZipArchive();
$open = $zip->open($file);
if($open === TRUE)
{
	print("ok\n");	
}
else
{
	print("error ".$open."\n");
	readfile($file);
}

Expected result:
----------------
ok

Actual result:
--------------
error 11.
content of zip file.

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 [2009-07-06 13:21 UTC] pajoye@php.net
It open the files in read/write mode.

What do you mean by restricted privileges? Can you describe the exact situation when you get this error (which permissions, context, etc.)?
 [2009-07-06 14:37 UTC] mb at smartftp dot com
Restricted privileges: read only access

If the open() function really requires rw access consider to fall back to read-only "r" if read-write "rw" fails. This way the archive can be opened for read only access.

Regards,
Mat
 [2010-06-21 10:28 UTC] pajoye@php.net
-Type: Bug +Type: Feature/Change Request -PHP Version: 5.*, 6CVS (2009-05-10) +PHP Version: *
 [2010-06-21 10:28 UTC] pajoye@php.net
Change to feature request, provide a read only mode top open existing archives.
 
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