def logout(request):
''' Logout functionality '''
auth_token = request.COOKIES.get("auth", None)
email = request.COOKIES.get("email", None)
try:
if auth_token != None and email != None:
redis_obj = Redis()
old_auth_token = redis_obj.get_value("email:%s:auth.token" %(email))
new_auth_token = get_auth_token()
key = "email:%s:auth.token" % (email)
redis_obj.set_value(key, new_auth_token)
key = "auth.token:%s:email" % (new_auth_token)
redis_obj.set_value(key, email)
redis_obj.remove_key("auth.token:%s:email" % (old_auth_token))
user_id = get_userId(request)
key = "auth.token:%s:userId" %(new_auth_token)
redis_obj.set_value(key, user_id)
redis_obj.remove_key("auth.token:%s:userId" %(old_auth_token))
key = "userId:%d:auth.token" %(user_id)
redis_obj.set_value(key, new_auth_token)
except:
pass
return HttpResponseRedirect('/')
def is_logged_in(cookie_email, cookie_auth_token):
''' Helper function to check the login status '''
if cookie_auth_token == "" or cookie_email == "":
return False
redis_obj = Redis()
auth_token = redis_obj.get_value("email:%s:auth.token" % (cookie_email))
if auth_token != cookie_auth_token:
return False
email = redis_obj.get_value("auth.token:%s:email" % (cookie_auth_token))
if email != cookie_email:
return False
return True
def get_userId(request):
''' Get the user id by extracting auth token from
cookies which is passed in the request '''
redis_obj = Redis()
auth_token = request.COOKIES.get('auth', '')
key = "auth.token:%s:userId" %(auth_token)
return int(redis_obj.get_value(key))
