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import re
from django.utils.text import compress_string
from django.utils.cache import patch_vary_headers
from django import http
try:
from django.conf import settings
XS_SHARING_ALLOWED_ORIGINS = settings.XS_SHARING_ALLOWED_ORIGINS
XS_SHARING_ALLOWED_METHODS = settings.XS_SHARING_ALLOWED_METHODS
except:
XS_SHARING_ALLOWED_ORIGINS = '*'
XS_SHARING_ALLOWED_METHODS = ['POST','GET','OPTIONS', 'PUT', 'DELETE']
class XsSharing(object):
"""
This middleware allows cross-domain XHR using the html5 postMessage API.
Access-Control-Allow-Origin: http://foo.example
Access-Control-Allow-Methods: POST, GET, OPTIONS, PUT, DELETE
"""
def process_request(self, request):
if 'HTTP_ACCESS_CONTROL_REQUEST_METHOD' in request.META:
response = http.HttpResponse()
response['Access-Control-Allow-Origin'] = XS_SHARING_ALLOWED_ORIGINS
response['Access-Control-Allow-Methods'] = ",".join( XS_SHARING_ALLOWED_METHODS )
return response
return None
def process_response(self, request, response):
# Avoid unnecessary work
if response.has_header('Access-Control-Allow-Origin'):
return response
response['Access-Control-Allow-Origin'] = XS_SHARING_ALLOWED_ORIGINS
response['Access-Control-Allow-Methods'] = ",".join( XS_SHARING_ALLOWED_METHODS )
return response
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