first comit

venv/lib/python3.10/site-packages/django/middleware/clickjacking.py

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+"""
+Clickjacking Protection Middleware.
+
+This module provides a middleware that implements protection against a
+malicious site loading resources from your site in a hidden frame.
+"""
+
+from django.conf import settings
+from django.utils.deprecation import MiddlewareMixin
+
+
+class XFrameOptionsMiddleware(MiddlewareMixin):
+    """
+    Set the X-Frame-Options HTTP header in HTTP responses.
+
+    Do not set the header if it's already set or if the response contains
+    a xframe_options_exempt value set to True.
+
+    By default, set the X-Frame-Options header to 'DENY', meaning the response
+    cannot be displayed in a frame, regardless of the site attempting to do so.
+    To enable the response to be loaded on a frame within the same site, set
+    X_FRAME_OPTIONS in your project's Django settings to 'SAMEORIGIN'.
+    """
+
+    def process_response(self, request, response):
+        # Don't set it if it's already in the response
+        if response.get("X-Frame-Options") is not None:
+            return response
+
+        # Don't set it if they used @xframe_options_exempt
+        if getattr(response, "xframe_options_exempt", False):
+            return response
+
+        response.headers["X-Frame-Options"] = self.get_xframe_options_value(
+            request,
+            response,
+        )
+        return response
+
+    def get_xframe_options_value(self, request, response):
+        """
+        Get the value to set for the X_FRAME_OPTIONS header. Use the value from
+        the X_FRAME_OPTIONS setting, or 'DENY' if not set.
+
+        This method can be overridden if needed, allowing it to vary based on
+        the request or response.
+        """
+        return getattr(settings, "X_FRAME_OPTIONS", "DENY").upper()