57 lines
1.9 KiB
Python
57 lines
1.9 KiB
Python
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from django.conf import settings
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from django.http import HttpResponseNotFound, HttpResponseRedirect, QueryDict
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from django.urls import reverse
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class RedirectMiddleware:
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def __init__(self, get_response):
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self.get_response = get_response
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self.redirect_ipv4 = settings.IP_REDIRECT_HOST["ipv4"]
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self.redirect_ipv6 = settings.IP_REDIRECT_HOST["ipv6"]
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self.redirect_both = (
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settings.IP_REDIRECT_HOST["both"]
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if self.redirect_ipv4 and self.redirect_ipv6
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else ""
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)
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self.disallowed_paths = set(["/favicon.ico", "/robots.txt"])
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def __call__(self, request):
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host = request.get_host()
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if self.redirect_both and host == self.redirect_both:
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if request.path in self.disallowed_paths:
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return HttpResponseNotFound()
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q = QueryDict(mutable=True)
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q.appendlist("next", self.build_url(request, self.redirect_ipv6))
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return HttpResponseRedirect(
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f"{self.build_url(request, self.redirect_ipv4)}?{q.urlencode()}"
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)
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if (
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self.redirect_ipv4
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and host == self.redirect_ipv4
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and request.path != reverse("remote_ip")
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):
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if request.path in self.disallowed_paths:
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return HttpResponseNotFound()
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return HttpResponseRedirect(self.build_url(request, self.redirect_ipv4))
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if (
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self.redirect_ipv6
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and host == self.redirect_ipv6
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and request.path != reverse("remote_ip")
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):
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if request.path in self.disallowed_paths:
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return HttpResponseNotFound()
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return HttpResponseRedirect(self.build_url(request, self.redirect_ipv6))
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return self.get_response(request)
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def build_url(self, request, redirect_host):
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return f"http{'s' if request.is_secure() else ''}://{redirect_host}{reverse('remote_ip')}"
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