Style archive import may not update files atomically

Kirby · Apr 3, 2025

When importing a style archive, XenForo may copy files over existing files.
This operation is not atomic and thus those files may be accessed by a client in an inconsistent state (eg. half-written).

XF\Service\Style\ArchiveImport::copyAssetFiles
Code:

Code:

if ($this->rewriteAssetPaths)
{
    File::copyFileToAbstractedPath($pathname, $dataUriPrefix . $stdPath);
}
else
{
    $newPathPrefix = \XF::getRootDirectory() . $DS;
    File::copyFile($pathname, $newPathPrefix . $stdPath);
}

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Style archive import may not update files atomically

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Style archive import may not update files atomically

Kirby

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