/
FileResponse.php
76 lines (58 loc) · 1.82 KB
/
FileResponse.php
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<?php
namespace Centum\Http\Response;
use Centum\Http\Exception\CannotReadFileException;
use Centum\Http\Header;
use Centum\Http\Headers;
use Centum\Http\Response;
use Centum\Http\Status;
use Exception;
class FileResponse extends Response
{
/**
* @throws Exception
* @throws CannotReadFileException
*/
public function __construct(string $filePath, string $fileName)
{
$content = @file_get_contents($filePath);
if ($content === false) {
throw new CannotReadFileException($filePath);
}
$fileName = $this->sanitiseFileName($fileName);
$fileSize = filesize($filePath);
$headers = new Headers(
[
new Header("Content-Description", "File Transfer"),
new Header("Content-Type", "application/octet-stream"),
new Header("Content-Disposition", "attachment; filename=\"" . addcslashes($fileName, "\"") . "\""),
new Header("Content-Transfer-Encoding", "binary"),
new Header("Connection", "Keep-Alive"),
new Header("Expires", "0"),
new Header("Cache-Control", "must-revalidate, post-check=0, pre-check=0"),
new Header("Pragma", "public"),
new Header("Content-Length", (string) $fileSize),
]
);
parent::__construct(
$content,
Status::OK,
$headers
);
}
/**
* @throws Exception
*/
protected function sanitiseFileName(string $fileName): string
{
$fileName = preg_replace(
"/([^\w\s\d\-_~,\[\]\(\).'\"]+)/",
"",
$fileName
);
if (!$fileName) {
throw new Exception();
}
$fileName = trim($fileName);
return $fileName;
}
}