add torrent file validation

src/Controller/TorrentController.php

@@ -45,7 +45,7 @@ class TorrentController extends AbstractController
         }
 
         // Read file
-        if (!$file = $torrentService->readTorrentFileById($torrent->getId()))
+        if (!$file = $torrentService->readTorrentFileByTorrentId($torrent->getId()))
         {
             throw $this->createNotFoundException();
         }

src/Service/TorrentService.php

@@ -32,14 +32,22 @@ class TorrentService
     // Tools
     public function readTorrentFileByFilepath(
         string $filepath
-    ): \Rhilip\Bencode\TorrentFile
+    ): ?\Rhilip\Bencode\TorrentFile
     {
-        return \Rhilip\Bencode\TorrentFile::load(
-            $filepath
-        );
+        try
+        {
+            return \Rhilip\Bencode\TorrentFile::load(
+                $filepath
+            );
+        }
+
+        catch (\Rhilip\Bencode\ParseException $error)
+        {
+            return null;
+        }
     }
 
-    public function readTorrentFileById(
+    public function readTorrentFileByTorrentId(
         int $id
     ): \Rhilip\Bencode\TorrentFile
     {