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