78 lines
2.5 KiB
PHP
78 lines
2.5 KiB
PHP
<?php
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namespace BookStack\Http\Responses;
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use BookStack\Util\WebSafeMimeSniffer;
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use Illuminate\Http\Request;
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use Illuminate\Http\Response;
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use Symfony\Component\HttpFoundation\StreamedResponse;
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class DownloadResponseFactory
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{
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protected Request $request;
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public function __construct(Request $request)
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{
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$this->request = $request;
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}
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/**
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* Create a response that directly forces a download in the browser.
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*/
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public function directly(string $content, string $fileName): Response
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{
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return response()->make($content, 200, $this->getHeaders($fileName));
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}
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/**
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* Create a response that forces a download, from a given stream of content.
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*/
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public function streamedDirectly($stream, string $fileName): StreamedResponse
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{
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return response()->stream(function () use ($stream) {
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// End & flush the output buffer, if we're in one, otherwise we still use memory.
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// Output buffer may or may not exist depending on PHP `output_buffering` setting.
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// Ignore in testing since output buffers are used to gather a response.
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if (!empty(ob_get_status()) && !app()->runningUnitTests()) {
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ob_end_clean();
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}
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fpassthru($stream);
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fclose($stream);
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}, 200, $this->getHeaders($fileName));
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}
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/**
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* Create a file download response that provides the file with a content-type
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* correct for the file, in a way so the browser can show the content in browser,
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* for a given content stream.
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*/
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public function streamedInline($stream, string $fileName): StreamedResponse
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{
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$sniffContent = fread($stream, 2000);
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$mime = (new WebSafeMimeSniffer())->sniff($sniffContent);
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return response()->stream(function () use ($sniffContent, $stream) {
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echo $sniffContent;
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fpassthru($stream);
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fclose($stream);
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}, 200, $this->getHeaders($fileName, $mime));
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}
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/**
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* Get the common headers to provide for a download response.
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*/
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protected function getHeaders(string $fileName, string $mime = 'application/octet-stream'): array
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{
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$disposition = ($mime === 'application/octet-stream') ? 'attachment' : 'inline';
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$downloadName = str_replace('"', '', $fileName);
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return [
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'Content-Type' => $mime,
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'Content-Disposition' => "{$disposition}; filename=\"{$downloadName}\"",
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'X-Content-Type-Options' => 'nosniff',
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];
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}
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}
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