X-Git-Url: http://git.cascardo.info/?p=cascardo%2Fipsilon.git;a=blobdiff_plain;f=ipsilon%2Fproviders%2Fsaml2idp.py;h=93dcbc6c448828e3ca29104ac286124263a4dbb0;hp=4afe7d3dec4b658ca261096a3a35936e5b063930;hb=07ec779defce9b0fecf4da8c726d1b492c147626;hpb=45cb73a21a90084818c3057e362ef9459f1600f3 diff --git a/ipsilon/providers/saml2idp.py b/ipsilon/providers/saml2idp.py index 4afe7d3..93dcbc6 100644 --- a/ipsilon/providers/saml2idp.py +++ b/ipsilon/providers/saml2idp.py @@ -1,37 +1,77 @@ -# Copyright (C) 2014 Simo Sorce -# -# 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 . - -from ipsilon.providers.common import ProviderBase, ProviderPageBase +# Copyright (C) 2014 Ipsilon project Contributors, for license see COPYING + +from ipsilon.providers.common import ProviderBase, ProviderPageBase, \ + ProviderInstaller from ipsilon.providers.saml2.auth import AuthenticateRequest +from ipsilon.providers.saml2.logout import LogoutRequest from ipsilon.providers.saml2.admin import Saml2AdminPage +from ipsilon.providers.saml2.rest import Saml2RestBase from ipsilon.providers.saml2.provider import IdentityProvider +from ipsilon.providers.saml2.sessions import SAMLSessionFactory +from ipsilon.util.data import SAML2SessionStore from ipsilon.tools.certs import Certificate from ipsilon.tools import saml2metadata as metadata from ipsilon.tools import files +from ipsilon.util.http import require_content_type +from ipsilon.util.constants import SOAP_MEDIA_TYPE, XML_MEDIA_TYPE from ipsilon.util.user import UserSession from ipsilon.util.plugin import PluginObject from ipsilon.util import config as pconfig import cherrypy +from datetime import timedelta import lasso import os +import time +import uuid + +cherrypy.tools.require_content_type = cherrypy.Tool('before_request_body', + require_content_type) + + +def is_lasso_ecp_enabled(): + # Full ECP support appeared in lasso version 2.4.2 + return lasso.checkVersion(2, 4, 2, lasso.CHECK_VERSION_NUMERIC) + + +class SSO_SOAP(AuthenticateRequest): + + def __init__(self, *args, **kwargs): + super(SSO_SOAP, self).__init__(*args, **kwargs) + self.binding = metadata.SAML2_SERVICE_MAP['sso-soap'][1] + + @cherrypy.tools.require_content_type( + required=[SOAP_MEDIA_TYPE, XML_MEDIA_TYPE]) + @cherrypy.tools.accept(media=[SOAP_MEDIA_TYPE, XML_MEDIA_TYPE]) + @cherrypy.tools.response_headers( + headers=[('Content-Type', 'SOAP_MEDIA_TYPE')]) + def POST(self, *args, **kwargs): + self.debug("SSO_SOAP.POST() begin") + + self.debug("SSO_SOAP transaction provider=%s id=%s" % + (self.trans.provider, self.trans.transaction_id)) + + us = UserSession() + us.remote_login() + user = us.get_user() + self.debug("SSO_SOAP user=%s" % (user.name)) + + if not user: + raise cherrypy.HTTPError(403, 'No user specified for SSO_SOAP') + + soap_xml_doc = cherrypy.request.rfile.read() + soap_xml_doc = soap_xml_doc.strip() + self.debug("SSO_SOAP soap_xml_doc=%s" % soap_xml_doc) + login = self.saml2login(soap_xml_doc) + + return self.auth(login) class Redirect(AuthenticateRequest): + def __init__(self, *args, **kwargs): + super(Redirect, self).__init__(*args, **kwargs) + self.binding = metadata.SAML2_SERVICE_MAP['sso-redirect'][1] + def GET(self, *args, **kwargs): query = cherrypy.request.query_string @@ -42,6 +82,10 @@ class Redirect(AuthenticateRequest): class POSTAuth(AuthenticateRequest): + def __init__(self, *args, **kwargs): + super(POSTAuth, self).__init__(*args, **kwargs) + self.binding = metadata.SAML2_SERVICE_MAP['sso-post'][1] + def POST(self, *args, **kwargs): request = kwargs.get(lasso.SAML2_FIELD_REQUEST) @@ -62,14 +106,14 @@ class Continue(AuthenticateRequest): self.stage = transdata['saml2_stage'] if user.is_anonymous: - self._debug("User is marked 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) + self.debug('Continue auth for %s' % user.name) if 'saml2_request' not in transdata: - self._debug("Couldn't find Request dump?!") + self.debug("Couldn't find Request dump?!") # TODO: Return to SP with auth failed error raise cherrypy.HTTPError(400) dump = transdata['saml2_request'] @@ -77,16 +121,29 @@ class Continue(AuthenticateRequest): try: login = self.cfg.idp.get_login_handler(dump) except Exception, e: # pylint: disable=broad-except - self._debug('Failed to load status from dump: %r' % e) + self.debug('Failed to load status from dump: %r' % e) if not login: - self._debug("Empty Request dump?!") + self.debug("Empty Request dump?!") # TODO: Return to SP with auth failed error raise cherrypy.HTTPError(400) return self.auth(login) +class Logout(LogoutRequest): + + def GET(self, *args, **kwargs): + query = cherrypy.request.query_string + + relaystate = kwargs.get(lasso.SAML2_FIELD_RELAYSTATE) + response = kwargs.get(lasso.SAML2_FIELD_RESPONSE) + + return self.logout(query, + relaystate=relaystate, + samlresponse=response) + + class SSO(ProviderPageBase): def __init__(self, *args, **kwargs): @@ -94,17 +151,52 @@ class SSO(ProviderPageBase): self.Redirect = Redirect(*args, **kwargs) self.POST = POSTAuth(*args, **kwargs) self.Continue = Continue(*args, **kwargs) + self.SOAP = SSO_SOAP(*args, **kwargs) + + +class SLO(ProviderPageBase): + + def __init__(self, *args, **kwargs): + super(SLO, self).__init__(*args, **kwargs) + self.debug('SLO init') + self.Redirect = Logout(*args, **kwargs) + + +# one week +METADATA_RENEW_INTERVAL = 60 * 60 * 24 * 7 +# five years (approximately) +METADATA_DEFAULT_VALIDITY_PERIOD = 365 * 5 class Metadata(ProviderPageBase): def GET(self, *args, **kwargs): - with open(self.cfg.idp_metadata_file) as m: - body = m.read() - cherrypy.response.headers["Content-Type"] = "text/xml" + + body = self._get_metadata() + cherrypy.response.headers["Content-Type"] = XML_MEDIA_TYPE cherrypy.response.headers["Content-Disposition"] = \ 'attachment; filename="metadata.xml"' return body + def _get_metadata(self): + if os.path.isfile(self.cfg.idp_metadata_file): + s = os.stat(self.cfg.idp_metadata_file) + if s.st_mtime > time.time() - METADATA_RENEW_INTERVAL: + with open(self.cfg.idp_metadata_file) as m: + return m.read() + + # Otherwise generate and save + idp_cert = Certificate() + idp_cert.import_cert(self.cfg.idp_certificate_file, + self.cfg.idp_key_file) + + validity = int(self.cfg.idp_metadata_validity) + meta = IdpMetadataGenerator(self.instance_base_url(), idp_cert, + timedelta(validity)) + body = meta.output() + with open(self.cfg.idp_metadata_file, 'w+') as m: + m.write(body) + return body + class SAML2(ProviderPageBase): @@ -112,6 +204,7 @@ class SAML2(ProviderPageBase): super(SAML2, self).__init__(*args, **kwargs) self.metadata = Metadata(*args, **kwargs) self.SSO = SSO(*args, **kwargs) + self.SLO = SLO(*args, **kwargs) class IdpProvider(ProviderBase): @@ -119,8 +212,10 @@ class IdpProvider(ProviderBase): def __init__(self, *pargs): super(IdpProvider, self).__init__('saml2', 'saml2', *pargs) self.admin = None + self.rest = None self.page = None self.idp = None + self.sessionfactory = None self.description = """ Provides SAML 2.0 authentication infrastructure. """ @@ -132,16 +227,25 @@ Provides SAML 2.0 authentication infrastructure. """ '/var/lib/ipsilon/saml2'), pconfig.String( 'idp metadata file', - 'The IdP Metadata file genearated at install time.', + 'The IdP Metadata file generated at install time.', 'metadata.xml'), + pconfig.String( + 'idp metadata validity', + 'The IdP Metadata validity period (in days) to use when ' + 'generating new metadata.', + METADATA_DEFAULT_VALIDITY_PERIOD), pconfig.String( 'idp certificate file', - 'The IdP PEM Certificate genearated at install time.', + 'The IdP PEM Certificate generated at install time.', 'certificate.pem'), pconfig.String( 'idp key file', - 'The IdP Certificate Key genearated at install time.', + 'The IdP Certificate Key generated at install time.', 'certificate.key'), + pconfig.String( + 'idp nameid salt', + 'The salt used for persistent Name IDs.', + None), pconfig.Condition( 'allow self registration', 'Allow authenticated users to register applications.', @@ -150,16 +254,29 @@ Provides SAML 2.0 authentication infrastructure. """ 'default allowed nameids', 'Default Allowed NameIDs for Service Providers.', metadata.SAML2_NAMEID_MAP.keys(), - ['persistent', 'transient', 'email', 'kerberos', 'x509']), + ['unspecified', 'persistent', 'transient', 'email', + 'kerberos', 'x509']), pconfig.Pick( 'default nameid', 'Default NameID used by Service Providers.', metadata.SAML2_NAMEID_MAP.keys(), - 'persistent'), + 'unspecified'), pconfig.String( 'default email domain', 'Used for users missing the email property.', 'example.com'), + pconfig.MappingList( + 'default attribute mapping', + 'Defines how to map attributes before returning them to SPs', + [['*', '*']]), + pconfig.ComplexList( + 'default allowed attributes', + 'Defines a list of allowed attributes, applied after mapping', + ['*']), + pconfig.String( + 'session database url', + 'Database URL for SAML2 sessions', + 'saml2.sessions.db.sqlite'), ) if cherrypy.config.get('debug', False): import logging @@ -169,6 +286,14 @@ Provides SAML 2.0 authentication infrastructure. """ logger.addHandler(lh) logger.setLevel(logging.DEBUG) + store = SAML2SessionStore( + database_url=self.get_config_value('session database url') + ) + bt = cherrypy.process.plugins.BackgroundTask( + 60, store.remove_expired_sessions + ) + bt.start() + @property def allow_self_registration(self): return self.get_config_value('allow self registration') @@ -182,6 +307,10 @@ Provides SAML 2.0 authentication infrastructure. """ return os.path.join(self.idp_storage_path, self.get_config_value('idp metadata file')) + @property + def idp_metadata_validity(self): + return self.get_config_value('idp metadata validity') + @property def idp_certificate_file(self): return os.path.join(self.idp_storage_path, @@ -192,6 +321,10 @@ Provides SAML 2.0 authentication infrastructure. """ return os.path.join(self.idp_storage_path, self.get_config_value('idp key file')) + @property + def idp_nameid_salt(self): + return self.get_config_value('idp nameid salt') + @property def default_allowed_nameids(self): return self.get_config_value('default allowed nameids') @@ -204,21 +337,35 @@ Provides SAML 2.0 authentication infrastructure. """ def default_email_domain(self): return self.get_config_value('default email domain') + @property + def default_attribute_mapping(self): + return self.get_config_value('default attribute mapping') + + @property + def default_allowed_attributes(self): + return self.get_config_value('default allowed attributes') + def get_tree(self, site): - self.idp = self.init_idp() self.page = SAML2(site, self) self.admin = Saml2AdminPage(site, self) + self.rest = Saml2RestBase(site, self) return self.page def init_idp(self): idp = None + self.sessionfactory = SAMLSessionFactory( + database_url=self.get_config_value('session database url') + ) # Init IDP data try: - idp = IdentityProvider(self) + idp = IdentityProvider(self, + sessionfactory=self.sessionfactory) except Exception, e: # pylint: disable=broad-except - self._debug('Failed to init SAML2 provider: %r' % e) + self.debug('Failed to init SAML2 provider: %r' % e) return None + self._root.logout.add_handler(self.name, self.idp_initiated_logout) + # Import all known applications data = self.get_data() for idval in data: @@ -230,7 +377,7 @@ Provides SAML 2.0 authentication infrastructure. """ try: idp.add_provider(sp) except Exception, e: # pylint: disable=broad-except - self._debug('Failed to add SP %s: %r' % (sp['name'], e)) + self.debug('Failed to add SP %s: %r' % (sp['name'], e)) return idp @@ -241,19 +388,100 @@ Provides SAML 2.0 authentication infrastructure. """ if self.admin: self.admin.add_sps() + def idp_initiated_logout(self): + """ + Logout all SP sessions when the logout comes from the IdP. + + For the current user only. -class Installer(object): + Only use HTTP-Redirect to start the logout. This is guaranteed + to be supported in SAML 2. + """ + self.debug("IdP-initiated SAML2 logout") + us = UserSession() + user = us.get_user() + + saml_sessions = self.sessionfactory + # pylint: disable=unused-variable + (mech, session) = saml_sessions.get_next_logout( + logout_mechs=[lasso.SAML2_METADATA_BINDING_REDIRECT]) + if session is None: + return + + logout = self.idp.get_logout_handler() + logout.setSessionFromDump(session.login_session) + logout.initRequest(session.provider_id) + try: + logout.buildRequestMsg() + except lasso.Error, e: + self.error('failure to build logout request msg: %s' % e) + raise cherrypy.HTTPRedirect(400, 'Failed to log out user: %s ' + % e) + + # Add a fake session to indicate where the user should + # be redirected to when all SP's are logged out. + idpurl = self._root.instance_base_url() + session_id = "_" + uuid.uuid4().hex.upper() + saml_sessions.add_session(session_id, idpurl, user.name, "", "", + [lasso.SAML2_METADATA_BINDING_REDIRECT]) + init_session = saml_sessions.get_session_by_id(session_id) + saml_sessions.start_logout(init_session, relaystate=idpurl) + + # Add the logout request id we just created to the session to be + # logged out so that when it responds we can find the right + # session. + session.set_logoutstate(request_id=logout.request.id) + saml_sessions.start_logout(session, initial=False) + + self.debug('Sending initial logout request to %s' % logout.msgUrl) + raise cherrypy.HTTPRedirect(logout.msgUrl) + + +class IdpMetadataGenerator(object): + + def __init__(self, url, idp_cert, expiration=None): + self.meta = metadata.Metadata(metadata.IDP_ROLE, expiration) + self.meta.set_entity_id('%s/saml2/metadata' % url) + self.meta.add_certs(idp_cert, idp_cert) + self.meta.add_service(metadata.SAML2_SERVICE_MAP['sso-post'], + '%s/saml2/SSO/POST' % url) + self.meta.add_service(metadata.SAML2_SERVICE_MAP['sso-redirect'], + '%s/saml2/SSO/Redirect' % url) + if is_lasso_ecp_enabled(): + self.meta.add_service(metadata.SAML2_SERVICE_MAP['sso-soap'], + '%s/saml2/SSO/SOAP' % url) + self.meta.add_service(metadata.SAML2_SERVICE_MAP['logout-redirect'], + '%s/saml2/SLO/Redirect' % url) + self.meta.add_allowed_name_format( + lasso.SAML2_NAME_IDENTIFIER_FORMAT_PERSISTENT) + self.meta.add_allowed_name_format( + lasso.SAML2_NAME_IDENTIFIER_FORMAT_TRANSIENT) + self.meta.add_allowed_name_format( + lasso.SAML2_NAME_IDENTIFIER_FORMAT_EMAIL) + + def output(self, path=None): + return self.meta.output(path) + + +class Installer(ProviderInstaller): def __init__(self, *pargs): + super(Installer, self).__init__() self.name = 'saml2' - self.ptype = 'provider' self.pargs = pargs def install_args(self, group): group.add_argument('--saml2', choices=['yes', 'no'], default='yes', help='Configure SAML2 Provider') - - def configure(self, opts): + group.add_argument('--saml2-metadata-validity', + default=METADATA_DEFAULT_VALIDITY_PERIOD, + help=('Metadata validity period in days ' + '(default - %d)' % + METADATA_DEFAULT_VALIDITY_PERIOD)) + group.add_argument('--saml2-session-dburl', + help='session database URL') + + def configure(self, opts, changes): if opts['saml2'] != 'yes': return @@ -270,23 +498,12 @@ class Installer(object): proto = 'https' if opts['secure'].lower() == 'no': proto = 'http' - url = '%s://%s/%s/saml2' % (proto, opts['hostname'], opts['instance']) - meta = metadata.Metadata(metadata.IDP_ROLE) - meta.set_entity_id(url + '/metadata') - meta.add_certs(cert, cert) - meta.add_service(metadata.SAML2_SERVICE_MAP['sso-post'], - url + '/SSO/POST') - meta.add_service(metadata.SAML2_SERVICE_MAP['sso-redirect'], - url + '/SSO/Redirect') - - meta.add_allowed_name_format( - lasso.SAML2_NAME_IDENTIFIER_FORMAT_TRANSIENT) - meta.add_allowed_name_format( - lasso.SAML2_NAME_IDENTIFIER_FORMAT_PERSISTENT) - meta.add_allowed_name_format( - lasso.SAML2_NAME_IDENTIFIER_FORMAT_EMAIL) - if 'krb' in opts and opts['krb'] == 'yes': - meta.add_allowed_name_format( + url = '%s://%s/%s' % (proto, opts['hostname'], opts['instance']) + validity = int(opts['saml2_metadata_validity']) + meta = IdpMetadataGenerator(url, cert, + timedelta(validity)) + if 'gssapi' in opts and opts['gssapi'] == 'yes': + meta.meta.add_allowed_name_format( lasso.SAML2_NAME_IDENTIFIER_FORMAT_KERBEROS) meta.output(os.path.join(path, 'metadata.xml')) @@ -299,7 +516,13 @@ class Installer(object): config = {'idp storage path': path, 'idp metadata file': 'metadata.xml', 'idp certificate file': cert.cert, - 'idp key file': cert.key} + 'idp key file': cert.key, + 'idp nameid salt': uuid.uuid4().hex, + 'idp metadata validity': opts['saml2_metadata_validity'], + 'session database url': opts['saml2_session_dburl'] or + opts['database_url'] % { + 'datadir': opts['data_dir'], + 'dbname': 'saml2.sessions.db'}} po.save_plugin_config(config) # Update global config to add login plugin