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feat: Add reject middleware for web security
- Implemented reject middleware to enhance security. - Updated server to integrate the new middleware. close #2923
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Original file line number | Diff line number | Diff line change |
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from typing import Callable, Iterable | ||
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from aiohttp import web | ||
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@web.middleware | ||
async def security_policy_middleware(request: web.Request, handler) -> web.StreamResponse: | ||
security_policy = request.app["security_policy"] | ||
security_policy.check_request(request) | ||
return await handler(request) | ||
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class SecurityPolicy: | ||
def __init__( | ||
self, | ||
request_policies: Iterable[Callable[[web.Request], None]], | ||
response_policies: Iterable[Callable[[web.Response], web.Response]], | ||
): | ||
self.request_policies = request_policies | ||
self.response_policies = response_policies | ||
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@classmethod | ||
def default_policy(cls) -> "SecurityPolicy": | ||
request_policies = [reject_metadata_local_link] | ||
response_policies = [add_self_content_security_policy, set_content_type_nosniff] | ||
return cls(request_policies, response_policies) | ||
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def check_request(self, request: web.Request): | ||
for policy in self.request_policies: | ||
policy(request) | ||
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def reject_metadata_local_link(request: web.Request): | ||
if request.host == "169.254.169.254": | ||
raise web.HTTPForbidden() | ||
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def add_self_content_security_policy(response: web.Response) -> web.Response: | ||
response.headers["Content-Security-Policy"] = "default-src 'self'" | ||
return response | ||
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def set_content_type_nosniff(response: web.Response) -> web.Response: | ||
response.headers["X-Content-Type-Options"] = "nosniff" | ||
return response |
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