X-Git-Url: http://source.bookstackapp.com/bookstack/blobdiff_plain/141eecb858cce126452baeb16905e25b6ceb13c6..refs/pull/5676/head:/app/Http/DownloadResponseFactory.php

diff --git a/app/Http/DownloadResponseFactory.php b/app/Http/DownloadResponseFactory.php
index 20032f525..8384484ad 100644
--- a/app/Http/DownloadResponseFactory.php
+++ b/app/Http/DownloadResponseFactory.php
@@ -2,18 +2,15 @@
 
 namespace BookStack\Http;
 
-use BookStack\Util\WebSafeMimeSniffer;
 use Illuminate\Http\Request;
 use Illuminate\Http\Response;
 use Symfony\Component\HttpFoundation\StreamedResponse;
 
 class DownloadResponseFactory
 {
-    protected Request $request;
-
-    public function __construct(Request $request)
-    {
-        $this->request = $request;
+    public function __construct(
+        protected Request $request,
+    ) {
     }
 
     /**
@@ -21,55 +18,95 @@ class DownloadResponseFactory
      */
     public function directly(string $content, string $fileName): Response
     {
-        return response()->make($content, 200, $this->getHeaders($fileName));
+        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 $fileName): StreamedResponse
+    public function streamedDirectly($stream, string $fileName, int $fileSize): StreamedResponse
     {
-        return response()->stream(function () use ($stream) {
-
-            // End & flush the output buffer, if we're in one, otherwise we still use memory.
-            // Output buffer may or may not exist depending on PHP `output_buffering` setting.
-            // Ignore in testing since output buffers are used to gather a response.
-            if (!empty(ob_get_status()) && !app()->runningUnitTests()) {
-                ob_end_clean();
-            }
-
-            fpassthru($stream);
-            fclose($stream);
-        }, 200, $this->getHeaders($fileName));
+        $rangeStream = new RangeSupportedStream($stream, $fileSize, $this->request);
+        $headers = array_merge($this->getHeaders($fileName, $fileSize), $rangeStream->getResponseHeaders());
+        return response()->stream(
+            fn() => $rangeStream->outputAndClose(),
+            $rangeStream->getResponseStatus(),
+            $headers,
+        );
     }
 
+    /**
+     * Create a response that downloads the given file via a stream.
+     * Has the option to delete the provided file once the stream is closed.
+     */
+    public function streamedFileDirectly(string $filePath, string $fileName, bool $deleteAfter = false): StreamedResponse
+    {
+        $fileSize = filesize($filePath);
+        $stream = fopen($filePath, 'r');
+
+        if ($deleteAfter) {
+            // Delete the given file if it still exists after the app terminates
+            $callback = function () use ($filePath) {
+                if (file_exists($filePath)) {
+                    unlink($filePath);
+                }
+            };
+
+            // We watch both app terminate and php shutdown to cover both normal app termination
+            // as well as other potential scenarios (connection termination).
+            app()->terminating($callback);
+            register_shutdown_function($callback);
+        }
+
+        return $this->streamedDirectly($stream, $fileName, $fileSize);
+    }
+
+
     /**
      * Create a file download response that provides the file with a content-type
      * correct for the file, in a way so the browser can show the content in browser,
      * for a given content stream.
      */
-    public function streamedInline($stream, string $fileName): StreamedResponse
+    public function streamedInline($stream, string $fileName, int $fileSize): StreamedResponse
     {
-        $sniffContent = fread($stream, 2000);
-        $mime = (new WebSafeMimeSniffer())->sniff($sniffContent);
-
-        return response()->stream(function () use ($sniffContent, $stream) {
-            echo $sniffContent;
-            fpassthru($stream);
-            fclose($stream);
-        }, 200, $this->getHeaders($fileName, $mime));
+        $rangeStream = new RangeSupportedStream($stream, $fileSize, $this->request);
+        $mime = $rangeStream->sniffMime(pathinfo($fileName, PATHINFO_EXTENSION));
+        $headers = array_merge($this->getHeaders($fileName, $fileSize, $mime), $rangeStream->getResponseHeaders());
+
+        return response()->stream(
+            fn() => $rangeStream->outputAndClose(),
+            $rangeStream->getResponseStatus(),
+            $headers,
+        );
+    }
+
+    /**
+     * Create a response that provides the given file via a stream with detected content-type.
+     * Has the option to delete the provided file once the stream is closed.
+     */
+    public function streamedFileInline(string $filePath, ?string $fileName = null): StreamedResponse
+    {
+        $fileSize = filesize($filePath);
+        $stream = fopen($filePath, 'r');
+
+        if ($fileName === null) {
+            $fileName = basename($filePath);
+        }
+
+        return $this->streamedInline($stream, $fileName, $fileSize);
     }
 
     /**
      * Get the common headers to provide for a download response.
      */
-    protected function getHeaders(string $fileName, string $mime = 'application/octet-stream'): array
+    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',
         ];