Add Service Provider class

This class allows to represent a service provider and its associated policy

Signed-off-by: Simo Sorce <simo@redhat.com>

1 files changed, 108 insertions, 0 deletions

diff --git a/ipsilon/providers/saml2/provider.py b/ipsilon/providers/saml2/provider.py
new file mode 100755
index 0000000..c738ac2
--- /dev/null
+++ b/ipsilon/providers/saml2/provider.py
@@ -0,0 +1,108 @@
+#!/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/>.
+
+import cherrypy
+import lasso
+
+
+NAMEID_MAP = {
+    'email': lasso.SAML2_NAME_IDENTIFIER_FORMAT_EMAIL,
+    'encrypted': lasso.SAML2_NAME_IDENTIFIER_FORMAT_ENCRYPTED,
+    'entity': lasso.SAML2_NAME_IDENTIFIER_FORMAT_ENTITY,
+    'kerberos': lasso.SAML2_NAME_IDENTIFIER_FORMAT_KERBEROS,
+    'persistent': lasso.SAML2_NAME_IDENTIFIER_FORMAT_PERSISTENT,
+    'transient': lasso.SAML2_NAME_IDENTIFIER_FORMAT_TRANSIENT,
+    'unspecified': lasso.SAML2_NAME_IDENTIFIER_FORMAT_UNSPECIFIED,
+    'windows': lasso.SAML2_NAME_IDENTIFIER_FORMAT_WINDOWS,
+    'x509': lasso.SAML2_NAME_IDENTIFIER_FORMAT_X509,
+}
+
+
+class InvalidProviderId(Exception):
+
+    def __init__(self, message):
+        msg = 'Invalid Provider ID: %s' % message
+        super(InvalidProviderId, self).__init__(msg)
+        self.message = msg
+
+    def __str__(self):
+        return repr(self.message)
+
+
+class NameIdNotAllowed(Exception):
+
+    def __init__(self):
+        message = 'The specified Name ID is not allowed'
+        super(NameIdNotAllowed, self).__init__(message)
+        self.message = message
+
+    def __str__(self):
+        return repr(self.message)
+
+
+class ServiceProvider(object):
+
+    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]
+
+    @property
+    def provider_id(self):
+        return self._properties['id']
+
+    @property
+    def name(self):
+        return self._properties['name']
+
+    @property
+    def allowed_namedids(self):
+        if 'allowed nameid' in self._properties:
+            return self._properties['allowed nameid']
+        else:
+            return self.cfg.default_allowed_nameids
+
+    @property
+    def default_nameid(self):
+        if 'default nameid' in self._properties:
+            return self._properties['default nameid']
+        else:
+            return self.cfg.default_nameid
+
+    def get_valid_nameid(self, nip):
+        self._debug('Requested NameId [%s]' % (nip.format,))
+        if nip.format == None:
+            return NAMEID_MAP[self.default_nameid]
+        elif nip.format == lasso.SAML2_NAME_IDENTIFIER_FORMAT_UNSPECIFIED:
+            return NAMEID_MAP[self.default_nameid]
+        else:
+            allowed = self.allowed_namedids
+            self._debug('Allowed NameIds %s' % (repr(allowed)))
+            for nameid in allowed:
+                if nip.format == NAMEID_MAP[nameid]:
+                    return nip.format
+        raise NameIdNotAllowed()
+
+    def _debug(self, fact):
+        if cherrypy.config.get('debug', False):
+            cherrypy.log(fact)