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Source code for django.middleware.clickjacking

"""
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


[docs]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 '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'. """ 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['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 'SAMEORIGIN' 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', 'SAMEORIGIN').upper()
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