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diff --git a/lib/python2.7/site-packages/django/middleware/clickjacking.py b/lib/python2.7/site-packages/django/middleware/clickjacking.py
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+++ b/lib/python2.7/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
+
+class XFrameOptionsMiddleware(object):
+    """
+    Middleware that sets the X-Frame-Options HTTP header in HTTP responses.
+
+    Does not set the header if it's already set or if the response contains
+    a xframe_options_exempt value set to True.
+
+    By default, sets the X-Frame-Options header to 'SAMEORIGIN', meaning the
+    response can only be loaded on a frame within the same site. To prevent the
+    response from being loaded in a frame in any site, set X_FRAME_OPTIONS in
+    your project's Django settings to 'DENY'.
+
+    Note: older browsers will quietly ignore this header, thus other
+    clickjacking protection techniques should be used if protection in those
+    browsers is required.
+
+    http://en.wikipedia.org/wiki/Clickjacking#Server_and_client
+    """
+    def process_response(self, request, response):
+        # Don't set it if it's already in the response
+        if response.get('X-Frame-Options', None) 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['X-Frame-Options'] = self.get_xframe_options_value(request,
+                                                                    response)
+        return response
+
+    def get_xframe_options_value(self, request, response):
+        """
+        Gets the value to set for the X_FRAME_OPTIONS header.
+
+        By default this uses the value from the X_FRAME_OPTIONS Django
+        settings. If not found in settings, defaults to 'SAMEORIGIN'.
+
+        This method can be overridden if needed, allowing it to vary based on
+        the request or response.
+        """
+        return getattr(settings, 'X_FRAME_OPTIONS', 'SAMEORIGIN').upper()