1 # Copyright (C) 2014 Ipsilon project Contributors, for license see COPYING
3 from ipsilon.providers.common import ProviderBase, ProviderPageBase, \
5 from ipsilon.providers.saml2.auth import AuthenticateRequest
6 from ipsilon.providers.saml2.logout import LogoutRequest
7 from ipsilon.providers.saml2.admin import Saml2AdminPage
8 from ipsilon.providers.saml2.rest import Saml2RestBase
9 from ipsilon.providers.saml2.provider import IdentityProvider
10 from ipsilon.providers.saml2.sessions import SAMLSessionFactory
11 from ipsilon.util.data import SAML2SessionStore
12 from ipsilon.tools.certs import Certificate
13 from ipsilon.tools import saml2metadata as metadata
14 from ipsilon.tools import files
15 from ipsilon.util.http import require_content_type
16 from ipsilon.util.constants import SOAP_MEDIA_TYPE, XML_MEDIA_TYPE
17 from ipsilon.util.user import UserSession
18 from ipsilon.util.plugin import PluginObject
19 from ipsilon.util import config as pconfig
21 from datetime import timedelta
27 cherrypy.tools.require_content_type = cherrypy.Tool('before_request_body',
31 def is_lasso_ecp_enabled():
32 # Full ECP support appeared in lasso version 2.4.2
33 return lasso.checkVersion(2, 4, 2, lasso.CHECK_VERSION_NUMERIC)
36 class SSO_SOAP(AuthenticateRequest):
38 def __init__(self, *args, **kwargs):
39 super(SSO_SOAP, self).__init__(*args, **kwargs)
40 self.binding = metadata.SAML2_SERVICE_MAP['sso-soap'][1]
42 @cherrypy.tools.require_content_type(
43 required=[SOAP_MEDIA_TYPE, XML_MEDIA_TYPE])
44 @cherrypy.tools.accept(media=[SOAP_MEDIA_TYPE, XML_MEDIA_TYPE])
45 @cherrypy.tools.response_headers(
46 headers=[('Content-Type', 'SOAP_MEDIA_TYPE')])
47 def POST(self, *args, **kwargs):
48 self.debug("SSO_SOAP.POST() begin")
50 self.debug("SSO_SOAP transaction provider=%s id=%s" %
51 (self.trans.provider, self.trans.transaction_id))
56 self.debug("SSO_SOAP user=%s" % (user.name))
59 raise cherrypy.HTTPError(403, 'No user specified for SSO_SOAP')
61 soap_xml_doc = cherrypy.request.rfile.read()
62 soap_xml_doc = soap_xml_doc.strip()
63 self.debug("SSO_SOAP soap_xml_doc=%s" % soap_xml_doc)
64 login = self.saml2login(soap_xml_doc)
66 return self.auth(login)
69 class Redirect(AuthenticateRequest):
71 def __init__(self, *args, **kwargs):
72 super(Redirect, self).__init__(*args, **kwargs)
73 self.binding = metadata.SAML2_SERVICE_MAP['sso-redirect'][1]
75 def GET(self, *args, **kwargs):
77 query = cherrypy.request.query_string
79 login = self.saml2login(query)
80 return self.auth(login)
83 class POSTAuth(AuthenticateRequest):
85 def __init__(self, *args, **kwargs):
86 super(POSTAuth, self).__init__(*args, **kwargs)
87 self.binding = metadata.SAML2_SERVICE_MAP['sso-post'][1]
89 def POST(self, *args, **kwargs):
91 request = kwargs.get(lasso.SAML2_FIELD_REQUEST)
92 relaystate = kwargs.get(lasso.SAML2_FIELD_RELAYSTATE)
94 login = self.saml2login(request)
95 login.set_msgRelayState(relaystate)
96 return self.auth(login)
99 class Continue(AuthenticateRequest):
101 def GET(self, *args, **kwargs):
103 session = UserSession()
104 user = session.get_user()
105 transdata = self.trans.retrieve()
106 self.stage = transdata['saml2_stage']
108 if user.is_anonymous:
109 self.debug("User is marked anonymous?!")
110 # TODO: Return to SP with auth failed error
111 raise cherrypy.HTTPError(401)
113 self.debug('Continue auth for %s' % user.name)
115 if 'saml2_request' not in transdata:
116 self.debug("Couldn't find Request dump?!")
117 # TODO: Return to SP with auth failed error
118 raise cherrypy.HTTPError(400)
119 dump = transdata['saml2_request']
122 login = self.cfg.idp.get_login_handler(dump)
123 except Exception, e: # pylint: disable=broad-except
124 self.debug('Failed to load status from dump: %r' % e)
127 self.debug("Empty Request dump?!")
128 # TODO: Return to SP with auth failed error
129 raise cherrypy.HTTPError(400)
131 return self.auth(login)
134 class Logout(LogoutRequest):
136 def GET(self, *args, **kwargs):
137 query = cherrypy.request.query_string
139 relaystate = kwargs.get(lasso.SAML2_FIELD_RELAYSTATE)
140 response = kwargs.get(lasso.SAML2_FIELD_RESPONSE)
142 return self.logout(query,
143 relaystate=relaystate,
144 samlresponse=response)
147 class SSO(ProviderPageBase):
149 def __init__(self, *args, **kwargs):
150 super(SSO, self).__init__(*args, **kwargs)
151 self.Redirect = Redirect(*args, **kwargs)
152 self.POST = POSTAuth(*args, **kwargs)
153 self.Continue = Continue(*args, **kwargs)
154 self.SOAP = SSO_SOAP(*args, **kwargs)
157 class SLO(ProviderPageBase):
159 def __init__(self, *args, **kwargs):
160 super(SLO, self).__init__(*args, **kwargs)
161 self.debug('SLO init')
162 self.Redirect = Logout(*args, **kwargs)
166 METADATA_RENEW_INTERVAL = 60 * 60 * 24 * 7
167 # five years (approximately)
168 METADATA_DEFAULT_VALIDITY_PERIOD = 365 * 5
171 class Metadata(ProviderPageBase):
172 def GET(self, *args, **kwargs):
174 body = self._get_metadata()
175 cherrypy.response.headers["Content-Type"] = XML_MEDIA_TYPE
176 cherrypy.response.headers["Content-Disposition"] = \
177 'attachment; filename="metadata.xml"'
180 def _get_metadata(self):
181 if os.path.isfile(self.cfg.idp_metadata_file):
182 s = os.stat(self.cfg.idp_metadata_file)
183 if s.st_mtime > time.time() - METADATA_RENEW_INTERVAL:
184 with open(self.cfg.idp_metadata_file) as m:
187 # Otherwise generate and save
188 idp_cert = Certificate()
189 idp_cert.import_cert(self.cfg.idp_certificate_file,
190 self.cfg.idp_key_file)
192 validity = int(self.cfg.idp_metadata_validity)
193 meta = IdpMetadataGenerator(self.instance_base_url(), idp_cert,
196 with open(self.cfg.idp_metadata_file, 'w+') as m:
201 class SAML2(ProviderPageBase):
203 def __init__(self, *args, **kwargs):
204 super(SAML2, self).__init__(*args, **kwargs)
205 self.metadata = Metadata(*args, **kwargs)
206 self.SSO = SSO(*args, **kwargs)
207 self.SLO = SLO(*args, **kwargs)
210 class IdpProvider(ProviderBase):
212 def __init__(self, *pargs):
213 super(IdpProvider, self).__init__('saml2', 'saml2', *pargs)
218 self.sessionfactory = None
219 self.description = """
220 Provides SAML 2.0 authentication infrastructure. """
226 'Path to data storage accessible by the IdP.',
227 '/var/lib/ipsilon/saml2'),
230 'The IdP Metadata file generated at install time.',
233 'idp metadata validity',
234 'The IdP Metadata validity period (in days) to use when '
235 'generating new metadata.',
236 METADATA_DEFAULT_VALIDITY_PERIOD),
238 'idp certificate file',
239 'The IdP PEM Certificate generated at install time.',
243 'The IdP Certificate Key generated at install time.',
247 'The salt used for persistent Name IDs.',
250 'allow self registration',
251 'Allow authenticated users to register applications.',
254 'default allowed nameids',
255 'Default Allowed NameIDs for Service Providers.',
256 metadata.SAML2_NAMEID_MAP.keys(),
257 ['unspecified', 'persistent', 'transient', 'email',
258 'kerberos', 'x509']),
261 'Default NameID used by Service Providers.',
262 metadata.SAML2_NAMEID_MAP.keys(),
265 'default email domain',
266 'Used for users missing the email property.',
269 'default attribute mapping',
270 'Defines how to map attributes before returning them to SPs',
273 'default allowed attributes',
274 'Defines a list of allowed attributes, applied after mapping',
277 'session database url',
278 'Database URL for SAML2 sessions',
279 'saml2.sessions.db.sqlite'),
281 if cherrypy.config.get('debug', False):
284 logger = logging.getLogger('lasso')
285 lh = logging.StreamHandler(sys.stderr)
286 logger.addHandler(lh)
287 logger.setLevel(logging.DEBUG)
289 store = SAML2SessionStore(
290 database_url=self.get_config_value('session database url')
292 bt = cherrypy.process.plugins.BackgroundTask(
293 60, store.remove_expired_sessions
298 def allow_self_registration(self):
299 return self.get_config_value('allow self registration')
302 def idp_storage_path(self):
303 return self.get_config_value('idp storage path')
306 def idp_metadata_file(self):
307 return os.path.join(self.idp_storage_path,
308 self.get_config_value('idp metadata file'))
311 def idp_metadata_validity(self):
312 return self.get_config_value('idp metadata validity')
315 def idp_certificate_file(self):
316 return os.path.join(self.idp_storage_path,
317 self.get_config_value('idp certificate file'))
320 def idp_key_file(self):
321 return os.path.join(self.idp_storage_path,
322 self.get_config_value('idp key file'))
325 def idp_nameid_salt(self):
326 return self.get_config_value('idp nameid salt')
329 def default_allowed_nameids(self):
330 return self.get_config_value('default allowed nameids')
333 def default_nameid(self):
334 return self.get_config_value('default nameid')
337 def default_email_domain(self):
338 return self.get_config_value('default email domain')
341 def default_attribute_mapping(self):
342 return self.get_config_value('default attribute mapping')
345 def default_allowed_attributes(self):
346 return self.get_config_value('default allowed attributes')
348 def get_tree(self, site):
349 self.idp = self.init_idp()
350 self.page = SAML2(site, self)
351 self.admin = Saml2AdminPage(site, self)
352 self.rest = Saml2RestBase(site, self)
357 self.sessionfactory = SAMLSessionFactory(
358 database_url=self.get_config_value('session database url')
362 idp = IdentityProvider(self,
363 sessionfactory=self.sessionfactory)
364 except Exception, e: # pylint: disable=broad-except
365 self.debug('Failed to init SAML2 provider: %r' % e)
368 self._root.logout.add_handler(self.name, self.idp_initiated_logout)
370 # Import all known applications
371 data = self.get_data()
374 if 'type' not in sp or sp['type'] != 'SP':
376 if 'name' not in sp or 'metadata' not in sp:
380 except Exception, e: # pylint: disable=broad-except
381 self.debug('Failed to add SP %s: %r' % (sp['name'], e))
386 super(IdpProvider, self).on_enable()
387 self.idp = self.init_idp()
388 if hasattr(self, 'admin'):
392 def idp_initiated_logout(self):
394 Logout all SP sessions when the logout comes from the IdP.
396 For the current user only.
398 Only use HTTP-Redirect to start the logout. This is guaranteed
399 to be supported in SAML 2.
401 self.debug("IdP-initiated SAML2 logout")
405 saml_sessions = self.sessionfactory
406 # pylint: disable=unused-variable
407 (mech, session) = saml_sessions.get_next_logout(
408 logout_mechs=[lasso.SAML2_METADATA_BINDING_REDIRECT])
412 logout = self.idp.get_logout_handler()
413 logout.setSessionFromDump(session.login_session)
414 logout.initRequest(session.provider_id)
416 logout.buildRequestMsg()
417 except lasso.Error, e:
418 self.error('failure to build logout request msg: %s' % e)
419 raise cherrypy.HTTPRedirect(400, 'Failed to log out user: %s '
422 # Add a fake session to indicate where the user should
423 # be redirected to when all SP's are logged out.
424 idpurl = self._root.instance_base_url()
425 session_id = "_" + uuid.uuid4().hex.upper()
426 saml_sessions.add_session(session_id, idpurl, user.name, "", "",
427 [lasso.SAML2_METADATA_BINDING_REDIRECT])
428 init_session = saml_sessions.get_session_by_id(session_id)
429 saml_sessions.start_logout(init_session, relaystate=idpurl)
431 # Add the logout request id we just created to the session to be
432 # logged out so that when it responds we can find the right
434 session.set_logoutstate(request_id=logout.request.id)
435 saml_sessions.start_logout(session, initial=False)
437 self.debug('Sending initial logout request to %s' % logout.msgUrl)
438 raise cherrypy.HTTPRedirect(logout.msgUrl)
441 class IdpMetadataGenerator(object):
443 def __init__(self, url, idp_cert, expiration=None):
444 self.meta = metadata.Metadata(metadata.IDP_ROLE, expiration)
445 self.meta.set_entity_id('%s/saml2/metadata' % url)
446 self.meta.add_certs(idp_cert, idp_cert)
447 self.meta.add_service(metadata.SAML2_SERVICE_MAP['sso-post'],
448 '%s/saml2/SSO/POST' % url)
449 self.meta.add_service(metadata.SAML2_SERVICE_MAP['sso-redirect'],
450 '%s/saml2/SSO/Redirect' % url)
451 if is_lasso_ecp_enabled():
452 self.meta.add_service(metadata.SAML2_SERVICE_MAP['sso-soap'],
453 '%s/saml2/SSO/SOAP' % url)
454 self.meta.add_service(metadata.SAML2_SERVICE_MAP['logout-redirect'],
455 '%s/saml2/SLO/Redirect' % url)
456 self.meta.add_allowed_name_format(
457 lasso.SAML2_NAME_IDENTIFIER_FORMAT_PERSISTENT)
458 self.meta.add_allowed_name_format(
459 lasso.SAML2_NAME_IDENTIFIER_FORMAT_TRANSIENT)
460 self.meta.add_allowed_name_format(
461 lasso.SAML2_NAME_IDENTIFIER_FORMAT_EMAIL)
463 def output(self, path=None):
464 return self.meta.output(path)
467 class Installer(ProviderInstaller):
469 def __init__(self, *pargs):
470 super(Installer, self).__init__()
474 def install_args(self, group):
475 group.add_argument('--saml2', choices=['yes', 'no'], default='yes',
476 help='Configure SAML2 Provider')
477 group.add_argument('--saml2-metadata-validity',
478 default=METADATA_DEFAULT_VALIDITY_PERIOD,
479 help=('Metadata validity period in days '
481 METADATA_DEFAULT_VALIDITY_PERIOD))
482 group.add_argument('--saml2-session-dburl',
483 help='session database URL')
485 def configure(self, opts, changes):
486 if opts['saml2'] != 'yes':
489 # Check storage path is present or create it
490 path = os.path.join(opts['data_dir'], 'saml2')
491 if not os.path.exists(path):
492 os.makedirs(path, 0700)
494 # Use the same cert for signing and ecnryption for now
495 cert = Certificate(path)
496 cert.generate('idp', opts['hostname'])
498 # Generate Idp Metadata
500 if opts['secure'].lower() == 'no':
502 url = '%s://%s/%s' % (proto, opts['hostname'], opts['instance'])
503 validity = int(opts['saml2_metadata_validity'])
504 meta = IdpMetadataGenerator(url, cert,
506 if 'gssapi' in opts and opts['gssapi'] == 'yes':
507 meta.meta.add_allowed_name_format(
508 lasso.SAML2_NAME_IDENTIFIER_FORMAT_KERBEROS)
510 meta.output(os.path.join(path, 'metadata.xml'))
512 # Add configuration data to database
513 po = PluginObject(*self.pargs)
516 po.wipe_config_values()
517 config = {'idp storage path': path,
518 'idp metadata file': 'metadata.xml',
519 'idp certificate file': cert.cert,
520 'idp key file': cert.key,
521 'idp nameid salt': uuid.uuid4().hex,
522 'idp metadata validity': opts['saml2_metadata_validity'],
523 'session database url': opts['saml2_session_dburl'] or
524 opts['database_url'] % {
525 'datadir': opts['data_dir'],
526 'dbname': 'saml2.sessions.db'}}
527 po.save_plugin_config(config)
529 # Update global config to add login plugin
531 po.save_enabled_state()
533 # Fixup permissions so only the ipsilon user can read these files
534 files.fix_user_dirs(path, opts['system_user'])