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May 3, 2016 14:28
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| #!/usr/bin/env python | |
| from __future__ import print_function | |
| import argparse | |
| import cgi | |
| import importlib | |
| import logging | |
| import os | |
| import re | |
| import sys | |
| import xml.dom.minidom | |
| from saml2.sigver import SignatureError | |
| import six | |
| from six.moves.http_cookies import SimpleCookie | |
| from six.moves.urllib.parse import parse_qs | |
| import saml2.xmldsig as ds | |
| from saml2 import BINDING_HTTP_ARTIFACT | |
| from saml2 import BINDING_HTTP_POST | |
| from saml2 import BINDING_HTTP_REDIRECT, element_to_extension_element | |
| from saml2 import BINDING_SOAP | |
| from saml2 import ecp | |
| from saml2 import time_util | |
| from saml2.client import Saml2Client | |
| from saml2.ecp_client import PAOS_HEADER_INFO | |
| from saml2.extension.pefim import SPCertEnc | |
| from saml2.httputil import BadRequest | |
| from saml2.httputil import NotFound | |
| from saml2.httputil import NotImplemented | |
| from saml2.httputil import Redirect | |
| from saml2.httputil import Response | |
| from saml2.httputil import SeeOther | |
| from saml2.httputil import ServiceError | |
| from saml2.httputil import Unauthorized | |
| from saml2.httputil import get_post | |
| from saml2.httputil import geturl, make_cookie, parse_cookie | |
| from saml2.metadata import create_metadata_string | |
| from saml2.response import StatusError | |
| from saml2.response import VerificationError | |
| from saml2.s_utils import UnknownPrincipal | |
| from saml2.s_utils import UnsupportedBinding | |
| from saml2.s_utils import decode_base64_and_inflate | |
| from saml2.s_utils import rndstr | |
| from saml2.s_utils import sid | |
| from saml2.saml import NAMEID_FORMAT_TRANSIENT | |
| from saml2.samlp import Extensions | |
| logger = logging.getLogger("") | |
| hdlr = logging.FileHandler('spx.log') | |
| base_formatter = logging.Formatter( | |
| "%(asctime)s %(name)s:%(levelname)s %(message)s") | |
| hdlr.setFormatter(base_formatter) | |
| logger.addHandler(hdlr) | |
| logger.setLevel(logging.INFO) | |
| SP = None | |
| SEED = "" | |
| POLICY = None | |
| def dict_to_table(ava, lev=0, width=1): | |
| txt = ['<table border=%s bordercolor="black">\n' % width] | |
| for prop, valarr in ava.items(): | |
| txt.append("<tr>\n") | |
| if isinstance(valarr, six.string_types): | |
| txt.append("<th>%s</th>\n" % str(prop)) | |
| txt.append("<td>%s</td>\n" % valarr) | |
| elif isinstance(valarr, list): | |
| i = 0 | |
| n = len(valarr) | |
| for val in valarr: | |
| if not i: | |
| txt.append("<th rowspan=%d>%s</td>\n" % (len(valarr), prop)) | |
| else: | |
| txt.append("<tr>\n") | |
| if isinstance(val, dict): | |
| txt.append("<td>\n") | |
| txt.extend(dict_to_table(val, lev + 1, width - 1)) | |
| txt.append("</td>\n") | |
| else: | |
| txt.append("<td>%s</td>\n" % val) | |
| if n > 1: | |
| txt.append("</tr>\n") | |
| n -= 1 | |
| i += 1 | |
| elif isinstance(valarr, dict): | |
| txt.append("<th>%s</th>\n" % prop) | |
| txt.append("<td>\n") | |
| txt.extend(dict_to_table(valarr, lev + 1, width - 1)) | |
| txt.append("</td>\n") | |
| txt.append("</tr>\n") | |
| txt.append('</table>\n') | |
| return txt | |
| class ECPResponse(object): | |
| code = 200 | |
| title = 'OK' | |
| def __init__(self, content): | |
| self.content = content | |
| # noinspection PyUnusedLocal | |
| def __call__(self, environ, start_response): | |
| start_response('%s %s' % (self.code, self.title), | |
| [('Content-Type', "text/xml")]) | |
| return [self.content] | |
| def _expiration(timeout, tformat=None): | |
| # Wed, 06-Jun-2012 01:34:34 GMT | |
| if not tformat: | |
| tformat = '%a, %d-%b-%Y %T GMT' | |
| if timeout == "now": | |
| return time_util.instant(tformat) | |
| else: | |
| # validity time should match lifetime of assertions | |
| return time_util.in_a_while(minutes=timeout, format=tformat) | |
| class Cache(object): | |
| def __init__(self): | |
| self.uid2user = {} | |
| self.cookie_name = "spauthn" | |
| self.outstanding_queries = {} | |
| self.outstanding_certs = {} | |
| self.relay_state = {} | |
| self.user = {} | |
| self.result = {} | |
| def get_user(self, environ): | |
| cookie = environ.get("HTTP_COOKIE", '') | |
| logger.debug("Cookie: %s", cookie) | |
| if cookie: | |
| cookie_obj = SimpleCookie(cookie) | |
| morsel = cookie_obj.get(self.cookie_name, None) | |
| if morsel: | |
| try: | |
| return self.uid2user[morsel.value] | |
| except KeyError: | |
| return None | |
| else: | |
| logger.debug("No %s cookie", self.cookie_name) | |
| return None | |
| def delete_cookie(self, environ): | |
| cookie = environ.get("HTTP_COOKIE", '') | |
| logger.debug("delete cookie: %s", cookie) | |
| if cookie: | |
| _name = self.cookie_name | |
| cookie_obj = SimpleCookie(cookie) | |
| morsel = cookie_obj.get(_name, None) | |
| cookie = SimpleCookie() | |
| cookie[_name] = "" | |
| cookie[_name]['path'] = "/" | |
| logger.debug("Expire: %s", morsel) | |
| cookie[_name]["expires"] = _expiration("now") | |
| return cookie.output().split(": ", 1) | |
| return None | |
| def set_cookie(self, user): | |
| uid = rndstr(32) | |
| self.uid2user[uid] = user | |
| cookie = SimpleCookie() | |
| cookie[self.cookie_name] = uid | |
| cookie[self.cookie_name]['path'] = "/" | |
| cookie[self.cookie_name]["expires"] = _expiration(480) | |
| logger.debug("Cookie expires: %s", cookie[self.cookie_name]["expires"]) | |
| return cookie.output().split(": ", 1) | |
| # ----------------------------------------------------------------------------- | |
| # RECEIVERS | |
| # ----------------------------------------------------------------------------- | |
| class Service(object): | |
| def __init__(self, environ, start_response, user=None): | |
| self.environ = environ | |
| logger.debug("ENVIRON: %s", environ) | |
| self.start_response = start_response | |
| self.user = user | |
| self.sp = None | |
| def unpack_redirect(self): | |
| if "QUERY_STRING" in self.environ: | |
| _qs = self.environ["QUERY_STRING"] | |
| return dict([(k, v[0]) for k, v in parse_qs(_qs).items()]) | |
| else: | |
| return None | |
| def unpack_post(self): | |
| _dict = parse_qs(get_post(self.environ).decode('utf8')) | |
| logger.debug("unpack_post:: %s", _dict) | |
| return dict([(k, v[0]) for k, v in _dict.items()]) | |
| def unpack_soap(self): | |
| try: | |
| query = get_post(self.environ) | |
| return {"SAMLResponse": query, "RelayState": ""} | |
| except Exception: | |
| return None | |
| def unpack_either(self): | |
| if self.environ["REQUEST_METHOD"] == "GET": | |
| _dict = self.unpack_redirect() | |
| elif self.environ["REQUEST_METHOD"] == "POST": | |
| _dict = self.unpack_post() | |
| else: | |
| _dict = None | |
| logger.debug("_dict: %s", _dict) | |
| return _dict | |
| def operation(self, _dict, binding): | |
| logger.debug("_operation: %s", _dict) | |
| if not _dict: | |
| resp = BadRequest('Error parsing request or no request') | |
| return resp(self.environ, self.start_response) | |
| else: | |
| try: | |
| _relay_state = _dict["RelayState"] | |
| except KeyError: | |
| _relay_state = "" | |
| if "SAMLResponse" in _dict: | |
| return self.do(_dict["SAMLResponse"], binding, | |
| _relay_state, mtype="response") | |
| elif "SAMLRequest" in _dict: | |
| return self.do(_dict["SAMLRequest"], binding, | |
| _relay_state, mtype="request") | |
| def artifact_operation(self, _dict): | |
| if not _dict: | |
| resp = BadRequest("Missing query") | |
| return resp(self.environ, self.start_response) | |
| else: | |
| # exchange artifact for response | |
| request = self.sp.artifact2message(_dict["SAMLart"], "spsso") | |
| return self.do(request, BINDING_HTTP_ARTIFACT, _dict["RelayState"]) | |
| def response(self, binding, http_args): | |
| if binding == BINDING_HTTP_ARTIFACT: | |
| resp = Redirect() | |
| else: | |
| resp = Response(http_args["data"], headers=http_args["headers"]) | |
| return resp(self.environ, self.start_response) | |
| def do(self, query, binding, relay_state="", mtype="response"): | |
| pass | |
| def redirect(self): | |
| """ Expects a HTTP-redirect response """ | |
| _dict = self.unpack_redirect() | |
| return self.operation(_dict, BINDING_HTTP_REDIRECT) | |
| def post(self): | |
| """ Expects a HTTP-POST response """ | |
| _dict = self.unpack_post() | |
| return self.operation(_dict, BINDING_HTTP_POST) | |
| def artifact(self): | |
| # Can be either by HTTP_Redirect or HTTP_POST | |
| _dict = self.unpack_either() | |
| return self.artifact_operation(_dict) | |
| def soap(self): | |
| """ | |
| Single log out using HTTP_SOAP binding | |
| """ | |
| logger.debug("- SOAP -") | |
| _dict = self.unpack_soap() | |
| logger.debug("_dict: %s", _dict) | |
| return self.operation(_dict, BINDING_SOAP) | |
| def uri(self): | |
| _dict = self.unpack_either() | |
| return self.operation(_dict, BINDING_SOAP) | |
| def not_authn(self): | |
| resp = Unauthorized('Unknown user') | |
| return resp(self.environ, self.start_response) | |
| # ----------------------------------------------------------------------------- | |
| # Attribute Consuming service | |
| # ----------------------------------------------------------------------------- | |
| class User(object): | |
| def __init__(self, name_id, data, saml_response): | |
| self.name_id = name_id | |
| self.data = data | |
| self.response = saml_response | |
| @property | |
| def authn_statement(self): | |
| xml_doc = xml.dom.minidom.parseString( | |
| str(self.response.assertion.authn_statement[0])) | |
| return xml_doc.toprettyxml() | |
| class ACS(Service): | |
| def __init__(self, sp, environ, start_response, cache): | |
| Service.__init__(self, environ, start_response) | |
| self.sp = sp | |
| self.outstanding_queries = cache.outstanding_queries | |
| self.cache = cache | |
| self.response = None | |
| def do(self, response, binding, relay_state="", mtype="response"): | |
| """ | |
| :param response: The SAML response, transport encoded | |
| :param binding: Which binding the query came in over | |
| """ | |
| # tmp_outstanding_queries = dict(self.outstanding_queries) | |
| if not response: | |
| logger.info("Missing Response") | |
| resp = Unauthorized('Unknown user') | |
| return resp(self.environ, self.start_response) | |
| try: | |
| self.response = self.sp.parse_authn_request_response( | |
| response, binding, self.outstanding_queries, | |
| self.cache.outstanding_certs) | |
| except UnknownPrincipal as excp: | |
| logger.error("UnknownPrincipal: %s", excp) | |
| resp = ServiceError("UnknownPrincipal: %s" % (excp,)) | |
| return resp(self.environ, self.start_response) | |
| except UnsupportedBinding as excp: | |
| logger.error("UnsupportedBinding: %s", excp) | |
| resp = ServiceError("UnsupportedBinding: %s" % (excp,)) | |
| return resp(self.environ, self.start_response) | |
| except VerificationError as err: | |
| resp = ServiceError("Verification error: %s" % (err,)) | |
| return resp(self.environ, self.start_response) | |
| except SignatureError as err: | |
| resp = ServiceError("Signature error: %s" % (err,)) | |
| return resp(self.environ, self.start_response) | |
| except Exception as err: | |
| resp = ServiceError("Other error: %s" % (err,)) | |
| return resp(self.environ, self.start_response) | |
| logger.info("AVA: %s", self.response.ava) | |
| user = User(self.response.name_id, self.response.ava, self.response) | |
| cookie = self.cache.set_cookie(user) | |
| resp = Redirect("/", headers=[ | |
| cookie, | |
| ]) | |
| return resp(self.environ, self.start_response) | |
| def verify_attributes(self, ava): | |
| logger.info("SP: %s", self.sp.config.entityid) | |
| rest = POLICY.get_entity_categories( | |
| self.sp.config.entityid, self.sp.metadata) | |
| akeys = [k.lower() for k in ava.keys()] | |
| res = {"less": [], "more": []} | |
| for key, attr in rest.items(): | |
| if key not in ava: | |
| if key not in akeys: | |
| res["less"].append(key) | |
| for key, attr in ava.items(): | |
| _key = key.lower() | |
| if _key not in rest: | |
| res["more"].append(key) | |
| return res | |
| # ----------------------------------------------------------------------------- | |
| # REQUESTERS | |
| # ----------------------------------------------------------------------------- | |
| class SSO(object): | |
| def __init__(self, sp, environ, start_response, cache=None, | |
| wayf=None, discosrv=None, bindings=None): | |
| self.sp = sp | |
| self.environ = environ | |
| self.start_response = start_response | |
| self.cache = cache | |
| self.idp_query_param = "IdpQuery" | |
| self.wayf = wayf | |
| self.discosrv = discosrv | |
| if bindings: | |
| self.bindings = bindings | |
| else: | |
| self.bindings = [BINDING_HTTP_REDIRECT, BINDING_HTTP_POST, | |
| BINDING_HTTP_ARTIFACT] | |
| logger.debug("--- SSO ---") | |
| def response(self, binding, http_args, do_not_start_response=False): | |
| if binding == BINDING_HTTP_ARTIFACT: | |
| resp = Redirect() | |
| elif binding == BINDING_HTTP_REDIRECT: | |
| for param, value in http_args["headers"]: | |
| if param == "Location": | |
| resp = SeeOther(str(value)) | |
| break | |
| else: | |
| resp = ServiceError("Parameter error") | |
| else: | |
| resp = Response(http_args["data"], headers=http_args["headers"]) | |
| if do_not_start_response: | |
| return resp | |
| else: | |
| return resp(self.environ, self.start_response) | |
| def _wayf_redirect(self, came_from): | |
| sid_ = sid() | |
| self.cache.outstanding_queries[sid_] = came_from | |
| logger.debug("Redirect to WAYF function: %s", self.wayf) | |
| return -1, SeeOther(headers=[('Location', "%s?%s" % (self.wayf, sid_))]) | |
| def _pick_idp(self, came_from): | |
| """ | |
| If more than one idp and if none is selected, I have to do wayf or | |
| disco | |
| """ | |
| _cli = self.sp | |
| logger.debug("[_pick_idp] %s", self.environ) | |
| if "HTTP_PAOS" in self.environ: | |
| if self.environ["HTTP_PAOS"] == PAOS_HEADER_INFO: | |
| if 'application/vnd.paos+xml' in self.environ["HTTP_ACCEPT"]: | |
| # Where should I redirect the user to | |
| # entityid -> the IdP to use | |
| # relay_state -> when back from authentication | |
| logger.debug("- ECP client detected -") | |
| _rstate = rndstr() | |
| self.cache.relay_state[_rstate] = geturl(self.environ) | |
| _entityid = _cli.config.ecp_endpoint( | |
| self.environ["REMOTE_ADDR"]) | |
| if not _entityid: | |
| return -1, ServiceError("No IdP to talk to") | |
| logger.debug("IdP to talk to: %s", _entityid) | |
| return ecp.ecp_auth_request(_cli, _entityid, _rstate) | |
| else: | |
| return -1, ServiceError('Faulty Accept header') | |
| else: | |
| return -1, ServiceError('unknown ECP version') | |
| # Find all IdPs | |
| idps = self.sp.metadata.with_descriptor("idpsso") | |
| idp_entity_id = None | |
| kaka = self.environ.get("HTTP_COOKIE", '') | |
| if kaka: | |
| try: | |
| (idp_entity_id, _) = parse_cookie("ve_disco", "SEED_SAW", kaka) | |
| except ValueError: | |
| pass | |
| except TypeError: | |
| pass | |
| # Any specific IdP specified in a query part | |
| query = self.environ.get("QUERY_STRING") | |
| if not idp_entity_id and query: | |
| try: | |
| _idp_entity_id = dict(parse_qs(query))[ | |
| self.idp_query_param][0] | |
| if _idp_entity_id in idps: | |
| idp_entity_id = _idp_entity_id | |
| except KeyError: | |
| logger.debug("No IdP entity ID in query: %s", query) | |
| pass | |
| if not idp_entity_id: | |
| if self.wayf: | |
| if query: | |
| try: | |
| wayf_selected = dict(parse_qs(query))[ | |
| "wayf_selected"][0] | |
| except KeyError: | |
| return self._wayf_redirect(came_from) | |
| idp_entity_id = wayf_selected | |
| else: | |
| return self._wayf_redirect(came_from) | |
| elif self.discosrv: | |
| if query: | |
| idp_entity_id = _cli.parse_discovery_service_response( | |
| query=self.environ.get("QUERY_STRING")) | |
| if not idp_entity_id: | |
| sid_ = sid() | |
| self.cache.outstanding_queries[sid_] = came_from | |
| logger.debug("Redirect to Discovery Service function") | |
| eid = _cli.config.entityid | |
| ret = _cli.config.getattr("endpoints", | |
| "sp")["discovery_response"][0][0] | |
| ret += "?sid=%s" % sid_ | |
| loc = _cli.create_discovery_service_request( | |
| self.discosrv, eid, **{"return": ret}) | |
| return -1, SeeOther(loc) | |
| elif len(idps) == 1: | |
| # idps is a dictionary | |
| idp_entity_id = list(idps.keys())[0] | |
| elif not len(idps): | |
| return -1, ServiceError('Misconfiguration') | |
| else: | |
| return -1, NotImplemented("No WAYF or DS present!") | |
| logger.info("Chosen IdP: '%s'", idp_entity_id) | |
| return 0, idp_entity_id | |
| def redirect_to_auth(self, _cli, entity_id, came_from, sigalg=""): | |
| try: | |
| # Picks a binding to use for sending the Request to the IDP | |
| _binding, destination = _cli.pick_binding( | |
| "single_sign_on_service", self.bindings, "idpsso", | |
| entity_id=entity_id) | |
| logger.debug("binding: %s, destination: %s", _binding, | |
| destination) | |
| # Binding here is the response binding that is which binding the | |
| # IDP should use to return the response. | |
| acs = _cli.config.getattr("endpoints", "sp")[ | |
| "assertion_consumer_service"] | |
| # just pick one | |
| endp, return_binding = acs[0] | |
| extensions = None | |
| cert = None | |
| if _cli.config.generate_cert_func is not None: | |
| cert_str, req_key_str = _cli.config.generate_cert_func() | |
| cert = { | |
| "cert": cert_str, | |
| "key": req_key_str | |
| } | |
| spcertenc = SPCertEnc(x509_data=ds.X509Data( | |
| x509_certificate=ds.X509Certificate(text=cert_str))) | |
| extensions = Extensions(extension_elements=[ | |
| element_to_extension_element(spcertenc)]) | |
| req_id, req = _cli.create_authn_request(destination, | |
| binding=return_binding, | |
| extensions=extensions, | |
| nameid_format=NAMEID_FORMAT_TRANSIENT) | |
| _rstate = rndstr() | |
| self.cache.relay_state[_rstate] = came_from | |
| ht_args = _cli.apply_binding(_binding, "%s" % req, destination, | |
| relay_state=_rstate, | |
| sigalg=sigalg) | |
| _sid = req_id | |
| if cert is not None: | |
| self.cache.outstanding_certs[_sid] = cert | |
| except Exception as exc: | |
| logger.exception(exc) | |
| resp = ServiceError( | |
| "Failed to construct the AuthnRequest: %s" % exc) | |
| return resp | |
| # remember the request | |
| self.cache.outstanding_queries[_sid] = came_from | |
| return self.response(_binding, ht_args, do_not_start_response=True) | |
| def do(self): | |
| _cli = self.sp | |
| # Which page was accessed to get here | |
| came_from = geturl(self.environ) | |
| logger.debug("[sp.challenge] RelayState >> '%s'", came_from) | |
| # If more than one idp and if none is selected, I have to do wayf | |
| (done, response) = self._pick_idp(came_from) | |
| # Three cases: -1 something went wrong or Discovery service used | |
| # 0 I've got an IdP to send a request to | |
| # >0 ECP in progress | |
| logger.debug("_idp_pick returned: %s", done) | |
| if done == -1: | |
| return response(self.environ, self.start_response) | |
| elif done > 0: | |
| self.cache.outstanding_queries[done] = came_from | |
| return ECPResponse(response) | |
| else: | |
| entity_id = response | |
| # Do the AuthnRequest | |
| resp = self.redirect_to_auth(_cli, entity_id, came_from) | |
| return resp(self.environ, self.start_response) | |
| # ---------------------------------------------------------------------------- | |
| class SLO(Service): | |
| def __init__(self, sp, environ, start_response, cache): | |
| Service.__init__(self, environ, start_response) | |
| self.sp = sp | |
| self.cache = cache | |
| def do(self, message, binding, relay_state="", mtype="response"): | |
| try: | |
| txt = decode_base64_and_inflate(message) | |
| is_logout_request = 'LogoutRequest' in txt.split('>', 1)[0] | |
| except: # TODO: parse the XML correctly | |
| is_logout_request = False | |
| if is_logout_request: | |
| self.sp.parse_logout_request(message, binding) | |
| else: | |
| self.sp.parse_logout_request_response(message, binding) | |
| return finish_logout(self.environ, self.start_response) | |
| # ---------------------------------------------------------------------------- | |
| # noinspection PyUnusedLocal | |
| def not_found(environ, start_response): | |
| """Called if no URL matches.""" | |
| resp = NotFound('Not Found') | |
| return resp(environ, start_response) | |
| # ---------------------------------------------------------------------------- | |
| def main(environ, start_response, sp): | |
| user = CACHE.get_user(environ) | |
| if user is None: | |
| # NOTE(dstanek): if a cookie doesn't map to a user then get_user will | |
| # return None. Since this could happen via a restart or expiration we | |
| # should clear the cookie to force a new round trip. | |
| environ['HTTP_COOKIE'] = '' # clear any cookies | |
| sso = SSO(sp, environ, start_response, cache=CACHE, **ARGS) | |
| return sso.do() | |
| body = dict_to_table(user.data) | |
| authn_stmt = cgi.escape(user.authn_statement) | |
| body.append('<br><pre>' + authn_stmt + "</pre>") | |
| body.append('<br><a href="/logout">logout</a>') | |
| resp = Response(body) | |
| return resp(environ, start_response) | |
| def disco(environ, start_response, _sp): | |
| query = parse_qs(environ["QUERY_STRING"]) | |
| entity_id = query["entityID"][0] | |
| _sid = query["sid"][0] | |
| came_from = CACHE.outstanding_queries[_sid] | |
| _sso = SSO(_sp, environ, start_response, cache=CACHE, **ARGS) | |
| resp = _sso.redirect_to_auth(_sso.sp, entity_id, came_from) | |
| # Add cookie | |
| kaka = make_cookie("ve_disco", entity_id, "SEED_SAW") | |
| resp.headers.append(kaka) | |
| return resp(environ, start_response) | |
| # ---------------------------------------------------------------------------- | |
| # noinspection PyUnusedLocal | |
| def logout(environ, start_response, sp): | |
| user = CACHE.get_user(environ) | |
| if user is None: | |
| sso = SSO(sp, environ, start_response, cache=CACHE, **ARGS) | |
| return sso.do() | |
| logger.info("[logout] subject_id: '%s'", user.name_id) | |
| # What if more than one | |
| data = sp.global_logout(user.name_id) | |
| logger.info("[logout] global_logout > %s", data) | |
| for entity_id, logout_info in data.items(): | |
| if isinstance(logout_info, tuple): | |
| binding, http_info = logout_info | |
| if binding == BINDING_HTTP_POST: | |
| body = ''.join(http_info['data']) | |
| resp = Response(body) | |
| return resp(environ, start_response) | |
| elif binding == BINDING_HTTP_REDIRECT: | |
| for key, value in http_info['headers']: | |
| if key.lower() == 'location': | |
| resp = Redirect(value) | |
| return resp(environ, start_response) | |
| resp = ServiceError('missing Location header') | |
| return resp(environ, start_response) | |
| else: | |
| resp = ServiceError('unknown logout binding: %s', binding) | |
| return resp(environ, start_response) | |
| else: # result from logout, should be OK | |
| pass | |
| return finish_logout(environ, start_response) | |
| def finish_logout(environ, start_response): | |
| logger.info("[logout done] environ: %s", environ) | |
| logger.info("[logout done] remaining subjects: %s", CACHE.uid2user.values()) | |
| # remove cookie and stored info | |
| cookie = CACHE.delete_cookie(environ) | |
| resp = Response('You are now logged out of this service', headers=[ | |
| cookie, | |
| ]) | |
| return resp(environ, start_response) | |
| # ---------------------------------------------------------------------------- | |
| # map urls to functions | |
| urls = [ | |
| # Hmm, place holder, NOT used | |
| ('place', ("holder", None)), | |
| (r'^$', main), | |
| (r'^disco', disco), | |
| (r'^logout$', logout), | |
| ] | |
| def add_urls(): | |
| base = "acs" | |
| urls.append(("%s/post$" % base, (ACS, "post", SP))) | |
| urls.append(("%s/post/(.*)$" % base, (ACS, "post", SP))) | |
| urls.append(("%s/redirect$" % base, (ACS, "redirect", SP))) | |
| urls.append(("%s/redirect/(.*)$" % base, (ACS, "redirect", SP))) | |
| base = "slo" | |
| urls.append(("%s/post$" % base, (SLO, "post", SP))) | |
| urls.append(("%s/post/(.*)$" % base, (SLO, "post", SP))) | |
| urls.append(("%s/redirect$" % base, (SLO, "redirect", SP))) | |
| urls.append(("%s/redirect/(.*)$" % base, (SLO, "redirect", SP))) | |
| # ---------------------------------------------------------------------------- | |
| def metadata(environ, start_response): | |
| try: | |
| path = _args.path | |
| if path is None or len(path) == 0: | |
| path = os.path.dirname(os.path.abspath(__file__)) | |
| if path[-1] != "/": | |
| path += "/" | |
| metadata = create_metadata_string(path + "sp_conf.py", None, | |
| _args.valid, _args.cert, | |
| _args.keyfile, | |
| _args.id, _args.name, _args.sign) | |
| start_response('200 OK', [('Content-Type', "text/xml")]) | |
| return metadata | |
| except Exception as ex: | |
| logger.error("An error occured while creating metadata: %s", ex.message) | |
| return not_found(environ, start_response) | |
| def application(environ, start_response): | |
| """ | |
| The main WSGI application. Dispatch the current request to | |
| the functions from above. | |
| If nothing matches, call the `not_found` function. | |
| :param environ: The HTTP application environment | |
| :param start_response: The application to run when the handling of the | |
| request is done | |
| :return: The response as a list of lines | |
| """ | |
| path = environ.get('PATH_INFO', '').lstrip('/') | |
| logger.debug("<application> PATH: '%s'", path) | |
| if path == "metadata": | |
| return metadata(environ, start_response) | |
| logger.debug("Finding callback to run") | |
| try: | |
| for regex, spec in urls: | |
| match = re.search(regex, path) | |
| if match is not None: | |
| if isinstance(spec, tuple): | |
| callback, func_name, _sp = spec | |
| cls = callback(_sp, environ, start_response, CACHE) | |
| func = getattr(cls, func_name) | |
| return func() | |
| else: | |
| return spec(environ, start_response, SP) | |
| return not_found(environ, start_response) | |
| except StatusError as err: | |
| logging.error("StatusError: %s" % err) | |
| resp = BadRequest("%s" % err) | |
| return resp(environ, start_response) | |
| except Exception as err: | |
| raise | |
| # _err = exception_trace("RUN", err) | |
| # logging.error(exception_trace("RUN", _err)) | |
| print(err, file=sys.stderr) | |
| resp = ServiceError("%s" % err) | |
| return resp(environ, start_response) | |
| if __name__ == '__main__': | |
| from cherrypy import wsgiserver | |
| _parser = argparse.ArgumentParser() | |
| _parser.add_argument('-d', dest='debug', action='store_true', | |
| help="Print debug information") | |
| _parser.add_argument('-D', dest='discosrv', | |
| help="Which disco server to use") | |
| _parser.add_argument('-s', dest='seed', | |
| help="Cookie seed") | |
| _parser.add_argument('-W', dest='wayf', action='store_true', | |
| help="Which WAYF url to use") | |
| _parser.add_argument("config", help="SAML client config") | |
| _parser.add_argument('-p', dest='path', help='Path to configuration file.') | |
| _parser.add_argument('-v', dest='valid', default="4", | |
| help="How long, in days, the metadata is valid from " | |
| "the time of creation") | |
| _parser.add_argument('-c', dest='cert', help='certificate') | |
| _parser.add_argument('-i', dest='id', | |
| help="The ID of the entities descriptor in the " | |
| "metadata") | |
| _parser.add_argument('-k', dest='keyfile', | |
| help="A file with a key to sign the metadata with") | |
| _parser.add_argument('-n', dest='name') | |
| _parser.add_argument('-S', dest='sign', action='store_true', | |
| help="sign the metadata") | |
| _parser.add_argument('-C', dest='service_conf_module', | |
| help="service config module") | |
| ARGS = {} | |
| _args = _parser.parse_args() | |
| if _args.discosrv: | |
| ARGS["discosrv"] = _args.discosrv | |
| if _args.wayf: | |
| ARGS["wayf"] = _args.wayf | |
| CACHE = Cache() | |
| CNFBASE = _args.config | |
| if _args.seed: | |
| SEED = _args.seed | |
| else: | |
| SEED = "SnabbtInspel" | |
| if _args.service_conf_module: | |
| service_conf = importlib.import_module(_args.service_conf_module) | |
| else: | |
| import service_conf | |
| HOST = service_conf.HOST | |
| PORT = service_conf.PORT | |
| # ------- HTTPS ------- | |
| # These should point to relevant files | |
| SERVER_CERT = service_conf.SERVER_CERT | |
| SERVER_KEY = service_conf.SERVER_KEY | |
| # This is of course the certificate chain for the CA that signed | |
| # your cert and all the way up to the top | |
| CERT_CHAIN = service_conf.CERT_CHAIN | |
| SP = Saml2Client(config_file="%s" % CNFBASE) | |
| POLICY = service_conf.POLICY | |
| add_urls() | |
| sign_alg = None | |
| digest_alg = None | |
| try: | |
| sign_alg = service_conf.SIGN_ALG | |
| except: | |
| pass | |
| try: | |
| digest_alg = service_conf.DIGEST_ALG | |
| except: | |
| pass | |
| ds.DefaultSignature(sign_alg, digest_alg) | |
| SRV = wsgiserver.CherryPyWSGIServer((HOST, PORT), application) | |
| logger.info("Server starting") | |
| print("SP listening on %s:%s" % (HOST, PORT)) | |
| try: | |
| SRV.start() | |
| except KeyboardInterrupt: | |
| SRV.stop() |
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