From a39bfa8e14ff73898e1539e88019a7a88ebf7499 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20H=C3=A4ger?= <martin.haeger@gmail.com>
Date: Sat, 25 Mar 2023 20:26:00 +0100
Subject: [PATCH] Fixed: Specify UTF-8 when serving text files to avoid
 incorrect detection by browsers

---
 .../Frontend/Mappers/StaticResourceMapperBase.cs           | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/Lidarr.Http/Frontend/Mappers/StaticResourceMapperBase.cs b/src/Lidarr.Http/Frontend/Mappers/StaticResourceMapperBase.cs
index 664259ede..1de8f93f5 100644
--- a/src/Lidarr.Http/Frontend/Mappers/StaticResourceMapperBase.cs
+++ b/src/Lidarr.Http/Frontend/Mappers/StaticResourceMapperBase.cs
@@ -1,7 +1,9 @@
 using System;
 using System.IO;
+using System.Text;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.StaticFiles;
+using Microsoft.Net.Http.Headers;
 using NLog;
 using NzbDrone.Common.Disk;
 using NzbDrone.Common.EnvironmentInfo;
@@ -39,7 +41,10 @@ namespace Lidarr.Http.Frontend.Mappers
                     contentType = "application/octet-stream";
                 }
 
-                return new FileStreamResult(GetContentStream(filePath), contentType);
+                return new FileStreamResult(GetContentStream(filePath), new MediaTypeHeaderValue(contentType)
+                {
+                    Encoding = contentType == "text/plain" ? Encoding.UTF8 : null
+                });
             }
 
             _logger.Warn("File {0} not found", filePath);