Fix possible double import of cubes modules
When cubes using the new layout are imported with 'cubicweb_<cube>' and with
'cubes.<cube>', the same module is imported twice.
Handle this by adding 'cubes.<cube>' to sys.modules when importing from
'cubicweb_<cube>'.
Move load_module() to a sub class _CubesLoader to share informations computed
in find_modules().
Don't handle subpackages in _CubesImporter and rely on normal import machinery
instead.
Add a test and use unittest from cubicweb.devtools.testlib which resolve to
unittest2 on PY2 with assertLogs() method.
# copyright 2003-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of CubicWeb.
#
# CubicWeb is free software: you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 2.1 of the License, or (at your option)
# any later version.
#
# CubicWeb 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 Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with CubicWeb. If not, see <http://www.gnu.org/licenses/>.
"""Simple cryptographic routines, based on python-crypto."""
from base64 import b64encode, b64decode
from six.moves import cPickle as pickle
from Crypto.Cipher import Blowfish
_CYPHERERS = {}
def _cypherer(seed):
try:
return _CYPHERERS[seed]
except KeyError:
_CYPHERERS[seed] = Blowfish.new(seed, Blowfish.MODE_ECB)
return _CYPHERERS[seed]
def encrypt(data, seed):
string = pickle.dumps(data)
string = string + '*' * (8 - len(string) % 8)
string = b64encode(_cypherer(seed).encrypt(string))
return unicode(string)
def decrypt(string, seed):
# pickle ignores trailing characters so we do not need to strip them off
string = _cypherer(seed).decrypt(b64decode(string))
return pickle.loads(string)