44 lines
1.7 KiB
Python
44 lines
1.7 KiB
Python
import re
|
|
|
|
from django.conf import settings
|
|
from django.http import HttpResponsePermanentRedirect
|
|
|
|
|
|
class SecurityMiddleware(object):
|
|
def __init__(self):
|
|
self.sts_seconds = settings.SECURE_HSTS_SECONDS
|
|
self.sts_include_subdomains = settings.SECURE_HSTS_INCLUDE_SUBDOMAINS
|
|
self.content_type_nosniff = settings.SECURE_CONTENT_TYPE_NOSNIFF
|
|
self.xss_filter = settings.SECURE_BROWSER_XSS_FILTER
|
|
self.redirect = settings.SECURE_SSL_REDIRECT
|
|
self.redirect_host = settings.SECURE_SSL_HOST
|
|
self.redirect_exempt = [re.compile(r) for r in settings.SECURE_REDIRECT_EXEMPT]
|
|
|
|
def process_request(self, request):
|
|
path = request.path.lstrip("/")
|
|
if (self.redirect and not request.is_secure() and
|
|
not any(pattern.search(path)
|
|
for pattern in self.redirect_exempt)):
|
|
host = self.redirect_host or request.get_host()
|
|
return HttpResponsePermanentRedirect(
|
|
"https://%s%s" % (host, request.get_full_path())
|
|
)
|
|
|
|
def process_response(self, request, response):
|
|
if (self.sts_seconds and request.is_secure() and
|
|
'strict-transport-security' not in response):
|
|
sts_header = "max-age=%s" % self.sts_seconds
|
|
|
|
if self.sts_include_subdomains:
|
|
sts_header = sts_header + "; includeSubDomains"
|
|
|
|
response["strict-transport-security"] = sts_header
|
|
|
|
if self.content_type_nosniff and 'x-content-type-options' not in response:
|
|
response["x-content-type-options"] = "nosniff"
|
|
|
|
if self.xss_filter and 'x-xss-protection' not in response:
|
|
response["x-xss-protection"] = "1; mode=block"
|
|
|
|
return response
|