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# -*- coding: utf-8 -*-
from flask import current_app
from itsdangerous import BadSignature, SignatureExpired, URLSafeTimedSerializer
from werkzeug.exceptions import Forbidden
class Confirmation(URLSafeTimedSerializer):
def __init__(self, realm, key=None, **kwargs):
if key is None:
key = current_app.config['SECRET_KEY']
super(Confirmation, self).__init__(key, salt=realm, **kwargs)
def loads_http(self, s, max_age=None, return_timestamp=False, salt=None):
"""
Like `Confirmation.loads`, but raise HTTP exceptions with appropriate
messages instead of `BadSignature` or `SignatureExpired`.
"""
try:
return self.loads(s, max_age, return_timestamp, salt)
except BadSignature:
raise Forbidden('Ungültiger Bestätigungslink.')
except SignatureExpired:
raise Forbidden('Bestätigungslink ist zu alt.')
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