From 7d79e347e8b15b4a1c074428693ed36aa54e1fa3 Mon Sep 17 00:00:00 2001
From: AverageHelper <me@average.name>
Date: Sun, 8 Dec 2024 17:29:06 -0700
Subject: [PATCH] fix: Permit serving .well-known directories

---
 actix-files/src/path_buf.rs | 33 ++++++++++++++++++++++++++++++++-
 1 file changed, 32 insertions(+), 1 deletion(-)

diff --git a/actix-files/src/path_buf.rs b/actix-files/src/path_buf.rs
index c1983279b..82b13e30d 100644
--- a/actix-files/src/path_buf.rs
+++ b/actix-files/src/path_buf.rs
@@ -44,7 +44,7 @@ impl PathBufWrap {
             if segment == ".." {
                 segment_count -= 1;
                 buf.pop();
-            } else if !hidden_files && segment.starts_with('.') {
+            } else if segment != ".well-known" && !hidden_files && segment.starts_with('.') {
                 return Err(UriSegmentError::BadStart('.'));
             } else if segment.starts_with('*') {
                 return Err(UriSegmentError::BadStart('*'));
@@ -105,6 +105,10 @@ mod tests {
             PathBufWrap::from_str("/test/.tt").map(|t| t.0),
             Err(UriSegmentError::BadStart('.'))
         );
+        assert_eq!(
+            PathBufWrap::from_str("/.well-known/test/.tt").map(|t| t.0),
+            Err(UriSegmentError::BadStart('.'))
+        );
         assert_eq!(
             PathBufWrap::from_str("/test/*tt").map(|t| t.0),
             Err(UriSegmentError::BadStart('*'))
@@ -144,6 +148,33 @@ mod tests {
         );
     }
 
+    #[test]
+    fn test_parse_well_known() {
+        assert_eq!(
+            PathBufWrap::parse_path("/.well-known/test/.tt", false).map(|t| t.0),
+            Err(UriSegmentError::BadStart('.'))
+        );
+        assert_eq!(
+            PathBufWrap::parse_path("/.well-known/test/foo", false)
+                .unwrap()
+                .0,
+            PathBuf::from_iter(vec![".well-known", "test", "foo"])
+        );
+
+        assert_eq!(
+            PathBufWrap::parse_path("/.well-known/test/.tt", true)
+                .unwrap()
+                .0,
+            PathBuf::from_iter(vec![".well-known", "test", ".tt"])
+        );
+        assert_eq!(
+            PathBufWrap::parse_path("/.well-known/test/foo", true)
+                .unwrap()
+                .0,
+            PathBuf::from_iter(vec![".well-known", "test", "foo"])
+        );
+    }
+
     #[test]
     fn path_traversal() {
         assert_eq!(