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#!/usr/bin/python
#
# 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 ProviderBase, ProviderPageBase
from ipsilon.providers.saml2.auth import AuthenticateRequest
from ipsilon.util.user import UserSession
import cherrypy
import lasso
import os
class Redirect(AuthenticateRequest):
def GET(self, *args, **kwargs):
query = cherrypy.request.query_string
login = self.saml2login(query)
return self.auth(login)
class POSTAuth(AuthenticateRequest):
def POST(self, *args, **kwargs):
request = kwargs.get(lasso.SAML2_FIELD_REQUEST)
relaystate = kwargs.get(lasso.SAML2_FIELD_RELAYSTATE)
login = self.saml2login(request)
login.set_msgRelayState(relaystate)
return self.auth(login)
class Continue(AuthenticateRequest):
def GET(self, *args, **kwargs):
session = UserSession()
user = session.get_user()
session.nuke_data('login', 'Return')
self.stage = session.get_data('saml2', 'stage')
if user.is_anonymous:
self._debug("User is marked anonymous?!")
# TODO: Return to SP with auth failed error
raise cherrypy.HTTPError(401)
self._debug('Continue auth for %s' % user.name)
dump = session.get_data('saml2', 'Request')
if not dump:
self._debug("Couldn't find Request dump?!")
# TODO: Return to SP with auth failed error
raise cherrypy.HTTPError(400)
try:
login = lasso.Login.newFromDump(self.cfg.idp, dump)
except Exception, e: # pylint: disable=broad-except
self._debug('Failed to load status from dump: %r' % e)
if not login:
self._debug("Empty Request dump?!")
# TODO: Return to SP with auth failed error
raise cherrypy.HTTPError(400)
return self.auth(login)
class SSO(ProviderPageBase):
def __init__(self, *args, **kwargs):
super(SSO, self).__init__(*args, **kwargs)
self.Redirect = Redirect(*args, **kwargs)
self.POST = POSTAuth(*args, **kwargs)
self.Continue = Continue(*args, **kwargs)
class SAML2(ProviderPageBase):
def __init__(self, *args, **kwargs):
super(SAML2, self).__init__(*args, **kwargs)
# Init IDP data
try:
self.cfg.idp = lasso.Server(self.cfg.idp_metadata_file,
self.cfg.idp_key_file,
None,
self.cfg.idp_certificate_file)
self.cfg.idp.role = lasso.PROVIDER_ROLE_IDP
except Exception, e: # pylint: disable=broad-except
self._debug('Failed to enable SAML2 provider: %r' % e)
return
# Import all known applications
data = self.cfg.get_data()
for idval in data:
if 'type' not in data[idval] or data[idval]['type'] != 'SP':
continue
path = os.path.join(self.cfg.idp_storage_path, str(idval))
sp = data[idval]
if 'name' in sp:
name = sp['name']
else:
name = str(idval)
try:
meta = os.path.join(path, 'metadata.xml')
cert = os.path.join(path, 'certificate.pem')
self.cfg.idp.addProvider(lasso.PROVIDER_ROLE_SP, meta, cert)
self._debug('Added SP %s' % name)
except Exception, e: # pylint: disable=broad-except
self._debug('Failed to add SP %s: %r' % (name, e))
self.SSO = SSO(*args, **kwargs)
class IdpProvider(ProviderBase):
def __init__(self):
super(IdpProvider, self).__init__('saml2', 'saml2')
self.page = None
self.description = """
Provides SAML 2.0 authentication infrastructure. """
self._options = {
'idp storage path': [
""" Path to data storage accessible by the IdP """,
'string',
'/var/lib/ipsilon/saml2'
],
'idp metadata file': [
""" The IdP Metadata file genearated at install time. """,
'string',
'metadata.xml'
],
'idp certificate file': [
""" The IdP PEM Certificate genearated at install time. """,
'string',
'certificate.pem'
],
'idp key file': [
""" The IdP Certificate Key genearated at install time. """,
'string',
'certificate.key'
],
'allow self registration': [
""" Allow authenticated users to register applications. """,
'boolean',
True
]
}
@property
def allow_self_registration(self):
return self.get_config_value('allow self registration')
@property
def idp_storage_path(self):
return self.get_config_value('idp storage path')
@property
def idp_metadata_file(self):
return os.path.join(self.idp_storage_path,
self.get_config_value('idp metadata file'))
@property
def idp_certificate_file(self):
return os.path.join(self.idp_storage_path,
self.get_config_value('idp certificate file'))
@property
def idp_key_file(self):
return os.path.join(self.idp_storage_path,
self.get_config_value('idp key file'))
def get_tree(self, site):
self.page = SAML2(site, self)
return self.page
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