root / snf-pithos-app / pithos / middleware / user.py @ 8c306eab
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# Copyright 2011 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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# 1. Redistributions of source code must retain the above
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# copyright notice, this list of conditions and the following
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# disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials
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# provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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from time import time, mktime |
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from httplib import HTTPConnection |
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from urllib import quote, unquote |
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from django.conf import settings |
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from django.utils import simplejson as json |
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def authenticate(authentication_host, token): |
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con = HTTPConnection(authentication_host) |
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kwargs = {} |
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kwargs['headers'] = {}
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kwargs['headers']['X-Auth-Token'] = token |
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kwargs['headers']['Content-Length'] = 0 |
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path = '/im/authenticate'
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con.request('GET', path, **kwargs)
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response = con.getresponse() |
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headers = response.getheaders() |
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headers = dict((unquote(h), unquote(v)) for h,v in headers) |
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length = response.getheader('content-length', None) |
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data = response.read(length) |
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status = int(response.status)
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if status < 200 or status >= 300: |
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raise Exception(data, int(response.status)) |
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return json.loads(data)
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def get_user_from_token(token): |
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if not token: |
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return None |
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users = settings.AUTHENTICATION_USERS |
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if users is not None: |
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try:
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return {'id': 0, 'uniq': users[token].decode('utf8')} |
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except:
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return None |
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host = settings.AUTHENTICATION_HOST |
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try:
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return authenticate(host, token)
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except:
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return None |
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class UserMiddleware(object): |
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def process_request(self, request): |
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request.user = None
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request.user_uniq = None
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# Try to find token in a parameter, in a request header, or in a cookie.
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user = get_user_from_token(request.GET.get('X-Auth-Token'))
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if not user: |
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user = get_user_from_token(request.META.get('HTTP_X_AUTH_TOKEN'))
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if not user: |
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return
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request.user = user |
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request.user_uniq = user['uniq']
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