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# Copyright (C) 2014 Simo Sorce <simo@redhat.com>
#
# see file 'COPYING' for use and warranty information
#
# This program 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 3 of the License, or
# (at your option) any later version.
#
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
from ipsilon.providers.common import ProviderException
from ipsilon.tools.saml2metadata import SAML2_NAMEID_MAP
from ipsilon.util.log import Log
import lasso
class InvalidProviderId(ProviderException):
def __init__(self, code):
message = 'Invalid Provider ID: %s' % code
super(InvalidProviderId, self).__init__(message)
self._debug(message)
class NameIdNotAllowed(Exception):
def __init__(self, nid):
message = 'Name ID [%s] is not allowed' % nid
super(NameIdNotAllowed, self).__init__(message)
self.message = message
def __str__(self):
return repr(self.message)
class ServiceProvider(Log):
def __init__(self, config, provider_id):
self.cfg = config
data = self.cfg.get_data(name='id', value=provider_id)
if len(data) != 1:
raise InvalidProviderId('multiple matches')
idval = data.keys()[0]
data = self.cfg.get_data(idval=idval)
self._properties = data[idval]
self._staging = dict()
@property
def provider_id(self):
return self._properties['id']
@property
def name(self):
return self._properties['name']
@name.setter
def name(self, value):
self._staging['name'] = value
@property
def owner(self):
if 'owner' in self._properties:
return self._properties['owner']
else:
return ''
@owner.setter
def owner(self, value):
self._staging['owner'] = value
@property
def allowed_nameids(self):
if 'allowed nameids' in self._properties:
allowed = self._properties['allowed nameids']
return [x.strip() for x in allowed.split(',')]
else:
return self.cfg.default_allowed_nameids
@allowed_nameids.setter
def allowed_nameids(self, value):
if type(value) is not list:
raise ValueError("Must be a list")
self._staging['allowed nameids'] = ','.join(value)
@property
def default_nameid(self):
if 'default nameid' in self._properties:
return self._properties['default nameid']
else:
return self.cfg.default_nameid
@default_nameid.setter
def default_nameid(self, value):
self._staging['default nameid'] = value
def save_properties(self):
data = self.cfg.get_data(name='id', value=self.provider_id)
if len(data) != 1:
raise InvalidProviderId('Could not find SP data')
idval = data.keys()[0]
data = dict()
data[idval] = self._staging
self.cfg.save_data(data)
data = self.cfg.get_data(idval=idval)
self._properties = data[idval]
self._staging = dict()
def get_valid_nameid(self, nip):
self._debug('Requested NameId [%s]' % (nip.format,))
if nip.format is None:
return SAML2_NAMEID_MAP[self.default_nameid]
elif nip.format == lasso.SAML2_NAME_IDENTIFIER_FORMAT_UNSPECIFIED:
return SAML2_NAMEID_MAP[self.default_nameid]
else:
allowed = self.allowed_nameids
self._debug('Allowed NameIds %s' % (repr(allowed)))
for nameid in allowed:
if nip.format == SAML2_NAMEID_MAP[nameid]:
return nip.format
raise NameIdNotAllowed(nip.format)
def permanently_delete(self):
data = self.cfg.get_data(name='id', value=self.provider_id)
if len(data) != 1:
raise InvalidProviderId('Could not find SP data')
idval = data.keys()[0]
self.cfg.del_datum(idval)
def normalize_username(self, username):
if 'strip domain' in self._properties:
return username.split('@', 1)[0]
return username
def is_valid_nameid(self, value):
if value in SAML2_NAMEID_MAP:
return True
return False
def valid_nameids(self):
return SAML2_NAMEID_MAP.keys()
class ServiceProviderCreator(object):
def __init__(self, config):
self.cfg = config
def create_from_buffer(self, name, metabuf):
'''Test and add data'''
test = lasso.Server()
test.addProviderFromBuffer(lasso.PROVIDER_ROLE_SP, metabuf)
newsps = test.get_providers()
if len(newsps) != 1:
raise InvalidProviderId("Metadata must contain one Provider")
spid = newsps.keys()[0]
data = self.cfg.get_data(name='id', value=spid)
if len(data) != 0:
raise InvalidProviderId("Provider Already Exists")
datum = {'id': spid, 'name': name, 'type': 'SP', 'metadata': metabuf}
self.cfg.new_datum(datum)
data = self.cfg.get_data(name='id', value=spid)
if len(data) != 1:
raise InvalidProviderId("Internal Error")
idval = data.keys()[0]
data = self.cfg.get_data(idval=idval)
sp = data[idval]
self.cfg.idp.add_provider(sp)
return ServiceProvider(self.cfg, spid)
class IdentityProvider(Log):
def __init__(self, config):
self.server = lasso.Server(config.idp_metadata_file,
config.idp_key_file,
None,
config.idp_certificate_file)
self.server.role = lasso.PROVIDER_ROLE_IDP
def add_provider(self, sp):
self.server.addProviderFromBuffer(lasso.PROVIDER_ROLE_SP,
sp['metadata'])
self._debug('Added SP %s' % sp['name'])
def get_login_handler(self, dump=None):
if dump:
return lasso.Login.newFromDump(self.server, dump)
else:
return lasso.Login(self.server)
def get_providers(self):
return self.server.get_providers()
def get_logout_handler(self, dump=None):
if dump:
return lasso.Logout.newFromDump(self.server, dump)
else:
return lasso.Logout(self.server)
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