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__init__.py
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# -*- coding: utf-8 -*-
#
# This file is part of Invenio.
# Copyright (C) 2015 CERN.
#
# Invenio is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.
#
# Invenio is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Invenio; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
"""Extension for password contexts via Passlib.
Support validation of multiple hashing algorithms to allow for easy migration
from one algorithm to another.
Example:
.. code-block:: console
from invenio.ext.passlib import password_context
hash = password_context.encrypt("mypassword")
password_context.verify("mypassword", hash)
password_context.needs_update(hash)
Invenio legacy support:
.. code-block:: console
from invenio.ext.passlib import password_context
hash = password_context.encrypt(
"mypassword",
scheme="invenio_aes_encrypted_email",
user="info@invenio-software.org",
)
password_context.verify(
"mypassword", hash
scheme="invenio_aes_encrypted_email",
user="info@invenio-software.org",
)
password_context.needs_update(hash)
Configuration Settings
----------------------
Invenio's default password hashing algorithms can be modified using the
following application settings:
============================ ==================================================
`PASSLIB_SCHEMES` List of supported password hashing schemes. The
default password hashing scheme is the first item
in the list.
**Default:**
`['sha512_crypt', 'invenio_aes_encrypted_email']`
`PASSLIB_DEPRECATED_SCHEMES` List of password hashing schemes that are
deprecated (which results in the users' hash being
automatically upgrade on next login). Note, all
deprecated scheme must also be present in
`PASSLIB_SCHEMES`.
**Default:** `['invenio_aes_encrypted_email']`
============================ ==================================================
"""
from flask import current_app
from passlib.context import CryptContext
from passlib.registry import register_crypt_handler
from werkzeug.local import LocalProxy
from .hash import invenio_aes_encrypted_email
password_context = LocalProxy(
lambda: current_app.extensions['passlib']
)
class Passlib(object):
"""Flask-Passlib integration."""
def __init__(self, app=None):
"""Initialize extension."""
if app is not None:
self.init_app(app)
def init_app(self, app):
"""Initialize application."""
# Register Invenio legacy password hashing.
register_crypt_handler(invenio_aes_encrypted_email)
app.config.setdefault(
'PASSLIB_SCHEMES',
['sha512_crypt', 'invenio_aes_encrypted_email']
)
app.config.setdefault(
'PASSLIB_DEPRECATED_SCHEMES',
['invenio_aes_encrypted_email']
)
# Create password context.
app.extensions['passlib'] = CryptContext(
schemes=app.config['PASSLIB_SCHEMES'],
deprecated=app.config['PASSLIB_DEPRECATED_SCHEMES']
)

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