Bug #79296 [Com]: ZipArchive::open with ZipArchive::CREATE flag fail when in the Mac OS TMPDIR

Edit report at https://bugs.php.net/bug.php?id=79296&edit=1 ID: 79296 Comment by: remi@php.net Reported by: dunglas at gmail dot com Summary: ZipArchive::open with ZipArchive::CREATE flag fail when in the Mac OS TMPDIR Status: Open Type: Bug Package: Zip Related Operating System: Mac OS X PHP Version: 7.4.3 Block user comment: N Private report: N New Comment: This is not a change in PHP nor ZIP extension, but in libzip 1.6.0, from Changelog * Do not accept empty files as valid zip archives any longer. So indeed your code have to be adapted. I propose to close as "not a bug" Previous Comments: ------------------------------------------------------------------------ [2020-03-10 15:20:59] dv dot sum0 at gmail dot com We saw the same issue on a Centos 7 machine, changed between 7.4.2 and 7.4.3 It seems to be caused by the fact that the tempnam() function creates an empty file immediately, if you use a different filename that doesn't already exist it works as expected. ------------------------------------------------------------------------ [2020-02-22 11:10:57] dunglas at gmail dot com Description: ------------ Creating a Zip archive in the default temporary directory of Mac OS doesn't work with Mac OS Catalina. Using the default TMPDIR to store temporary Zip archive, is a common practice. For instance it's what PHP WebDriver does by default to create a temporary Firefox profile. Using the OVERWRITE flag of libzip instead of the CREATE one fixes the problem. This may be due do to the new security features introduced in Mac OS Catalina. Tested with PHP 7.4 and 8.0-dev, but this bug probably affects all versions. Test script: --------------- <?php $f = tempnam(sys_get_temp_dir(), 'WebDriverFirefoxProfileZip'); $zip = new ZipArchive(); $success = $zip->open($f, ZipArchive::CREATE); // this work // $success = $zip->open($f, ZipArchive::OVERWRITE); if ($success !== true) { die('Error code '.$success); } $zip->addFile(__DIR__.'/foo.txt', '/foo.txt'); $zip->close(); Expected result: ---------------- No errors Actual result: -------------- Error 19 #define ZIP_ER_NOZIP 19 /* N Not a zip archive */ ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=79296&edit=1