Merge commit 'a8b68f153b72b8c022eceec254abe129cf5f5802' into prevent-parent-directory-access

Author: michalpokusa

adafruit_httpserver/response.py

@@ -215,11 +215,12 @@ def _get_file_length(file_path: str) -> int:
             raise FileNotExistsError(file_path)  # pylint: disable=raise-missing-from
 
     @_prevent_multiple_send_calls
-    def send_file(
+    def send_file(  # pylint: disable=too-many-arguments
         self,
         filename: str = "index.html",
         root_path: str = "./",
         buffer_size: int = 1024,
+        head_only: bool = False,
         safe: bool = True,
     ) -> None:
         """
@@ -247,9 +248,10 @@ def send_file(
             content_length=file_length,
         )
 
-        with open(full_file_path, "rb") as file:
-            while bytes_read := file.read(buffer_size):
-                self._send_bytes(self.request.connection, bytes_read)
+        if not head_only:
+            with open(full_file_path, "rb") as file:
+                while bytes_read := file.read(buffer_size):
+                    self._send_bytes(self.request.connection, bytes_read)
         self._response_already_sent = True
 
     def send_chunk(self, chunk: str = "") -> None:

adafruit_httpserver/route.py

@@ -106,7 +106,7 @@ def route_func(request, my_parameter):
                 my_parameter == "123" # True
         """
         if not self._routes:
-            raise ValueError("No routes added")
+            return None
 
         found_route, _route = False, None
 

adafruit_httpserver/server.py

@@ -166,13 +166,17 @@ def poll(self):
                     if handler is not None and callable(handler):
                         handler(request)
 
-                    # If no handler exists and request method is GET, try to serve a file.
-                    elif handler is None and request.method == HTTPMethod.GET:
+                    # If no handler exists and request method is GET or HEAD, try to serve a file.
+                    elif handler is None and request.method in (
+                        HTTPMethod.GET,
+                        HTTPMethod.HEAD,
+                    ):
                         filename = "index.html" if request.path == "/" else request.path
                         HTTPResponse(request).send_file(
                             filename=filename,
                             root_path=self.root_path,
                             buffer_size=self.request_buffer_size,
+                            head_only=(request.method == HTTPMethod.HEAD),
                         )
                     else:
                         HTTPResponse(