BookStack/app/Http/DownloadResponseFactory.php

71 lines
2.4 KiB
PHP

<?php
namespace BookStack\Http;
use Illuminate\Http\Request;
use Illuminate\Http\Response;
use Symfony\Component\HttpFoundation\StreamedResponse;
class DownloadResponseFactory
{
public function __construct(
protected Request $request
) {
}
/**
* Create a response that directly forces a download in the browser.
*/
public function directly(string $content, string $fileName): Response
{
return response()->make($content, 200, $this->getHeaders($fileName, strlen($content)));
}
/**
* Create a response that forces a download, from a given stream of content.
*/
public function streamedDirectly($stream, string $fileName, int $fileSize): StreamedResponse
{
$rangeStream = new RangeSupportedStream($stream, $fileSize, $this->request);
$headers = array_merge($this->getHeaders($fileName, $fileSize), $rangeStream->getResponseHeaders());
return response()->stream(
fn() => $rangeStream->outputAndClose(),
$rangeStream->getResponseStatus(),
$headers,
);
}
/**
* Create a file download response that provides the file with a content-type
* correct for the file, in a way so the browser can show the content in browser,
* for a given content stream.
*/
public function streamedInline($stream, string $fileName, int $fileSize): StreamedResponse
{
$rangeStream = new RangeSupportedStream($stream, $fileSize, $this->request);
$mime = $rangeStream->sniffMime();
$headers = array_merge($this->getHeaders($fileName, $fileSize, $mime), $rangeStream->getResponseHeaders());
return response()->stream(
fn() => $rangeStream->outputAndClose(),
$rangeStream->getResponseStatus(),
$headers,
);
}
/**
* Get the common headers to provide for a download response.
*/
protected function getHeaders(string $fileName, int $fileSize, string $mime = 'application/octet-stream'): array
{
$disposition = ($mime === 'application/octet-stream') ? 'attachment' : 'inline';
$downloadName = str_replace('"', '', $fileName);
return [
'Content-Type' => $mime,
'Content-Length' => $fileSize,
'Content-Disposition' => "{$disposition}; filename=\"{$downloadName}\"",
'X-Content-Type-Options' => 'nosniff',
];
}
}