Revision d01e6404 aai/middleware.py
| b/aai/middleware.py | ||
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| 5 | 5 |
import time |
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class SynnefoAuthMiddleware(object): |
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auth_token = "X-Auth-Token" |
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auth_user = "X-Auth-User" |
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auth_key = "X-Auth-Key" |
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def process_request(self, request): |
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if request.path.startswith('/api/') :
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return |
| ... | ... | |
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return self._redirect_shib_auth_user(user = u) |
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token = None |
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#Try to find token in a cookie |
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try: |
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token = request.COOKIES['X-Auth-Token'] |
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except Exception: |
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pass |
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#Try to find token in request header |
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# Try to find token in a cookie |
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token = request.COOKIES.get('X-Auth-Token', None)
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# Try to find token in request header |
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if not token: |
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token = request.META.get('HTTP_X_AUTH_TOKEN', None)
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if token: |
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user = None |
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#Retrieve user from DB or other caching mechanism |
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# token was found, retrieve user from backing store |
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try: |
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user = SynnefoUser.objects.get(auth_token=token) |
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except SynnefoUser.DoesNotExist: |
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return HttpResponseRedirect(settings.APP_INSTALL_URL + settings.LOGIN_PATH) |
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#Check user's auth token
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# check user's auth token validity
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if (time.time() - |
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time.mktime(user.auth_token_expires.timetuple())) > 0: |
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#The user's token has expired, re-login
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# the user's token has expired, prompt to re-login
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return HttpResponseRedirect(settings.APP_INSTALL_URL + settings.LOGIN_PATH) |
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request.user = user |
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return |
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#A user authenticated by Shibboleth, must include a uniq id
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if Tokens.SHIB_EPPN in request.META and Tokens.SHIB_SESSION_ID in request.META:
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user = None
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# token was not found but user authenticated by Shibboleth
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if Tokens.SHIB_EPPN in request.META and \
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Tokens.SHIB_SESSION_ID in request.META:
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try: |
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user = SynnefoUser.objects.get( |
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uniq = request.META[Tokens.SHIB_EPPN])
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user = SynnefoUser.objects.get(uniq=request.META[Tokens.SHIB_EPPN])
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return self._redirect_shib_auth_user(user)
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except SynnefoUser.DoesNotExist: |
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pass |
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#No user with this id could be found in the database |
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if user is None: |
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#Attempt to register the incoming user |
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# attempt to create a new user object |
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if register_shibboleth_user(request.META): |
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user = SynnefoUser.objects.get( |
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uniq = request.META[Tokens.SHIB_EPPN]) |
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user = SynnefoUser.objects.get(uniq=request.META[Tokens.SHIB_EPPN]) |
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return self._redirect_shib_auth_user(user) |
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else: |
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return HttpResponseRedirect(settings.APP_INSTALL_URL + settings.LOGIN_PATH) |
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#User and authentication token valid, user allowed to proceed
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return self._redirect_shib_auth_user(user)
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if settings.TEST and 'TEST-AAI' in request.META:
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return HttpResponseRedirect(settings.APP_INSTALL_URL + settings.LOGIN_PATH)
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if settings.TEST:
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if 'TEST-AAI' in request.META:
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return HttpResponseRedirect(settings.APP_INSTALL_URL + settings.LOGIN_PATH)
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if request.path.endswith(settings.LOGIN_PATH):
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# avoid redirect loops
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return
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else: |
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#Avoid redirect loops |
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if request.path.endswith(settings.LOGIN_PATH): |
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return |
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else : |
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#No authentication info found in headers, redirect to Shibboleth |
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return HttpResponseRedirect(settings.APP_INSTALL_URL + settings.LOGIN_PATH) |
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# no authentication info found in headers, redirect back |
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return HttpResponseRedirect(settings.APP_INSTALL_URL + settings.LOGIN_PATH) |
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def process_response(self, request, response): |
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#Tell proxies and other interested parties that the |
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#request varies based on the auth token, to avoid |
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#caching of results |
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response['Vary'] = self.auth_token |
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# Tell proxies and other interested parties that the request varies |
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# based on X-Auth-Token, to avoid caching of results |
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response['Vary'] = 'X-Auth-Token' |
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return response |
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def _redirect_shib_auth_user(self, user): |
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expire_fmt = user.auth_token_expires.strftime('%a, %d-%b-%Y %H:%M:%S %Z')
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response = HttpResponse() |
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response.set_cookie('X-Auth-Token', value=user.auth_token, expires = expire_fmt, path='/')
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response[self.auth_token] = user.auth_token |
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response.set_cookie('X-Auth-Token', value=user.auth_token, expires=expire_fmt, path='/')
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response['X-Auth-Token'] = user.auth_token |
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response['Location'] = settings.APP_INSTALL_URL |
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response.status_code = 302 |
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return response |
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