diff options
Diffstat (limited to 'synapse/rest/client/v1/login.py')
| -rw-r--r-- | synapse/rest/client/v1/login.py | 267 |
1 files changed, 124 insertions, 143 deletions
diff --git a/synapse/rest/client/v1/login.py b/synapse/rest/client/v1/login.py index 0010699d31..6121c5b6df 100644 --- a/synapse/rest/client/v1/login.py +++ b/synapse/rest/client/v1/login.py @@ -18,17 +18,18 @@ import xml.etree.ElementTree as ET from six.moves import urllib -from canonicaljson import json -from saml2 import BINDING_HTTP_POST, config -from saml2.client import Saml2Client - from twisted.internet import defer from twisted.web.client import PartialDownloadError from synapse.api.errors import Codes, LoginError, SynapseError from synapse.http.server import finish_request -from synapse.http.servlet import parse_json_object_from_request -from synapse.types import UserID +from synapse.http.servlet import ( + RestServlet, + parse_json_object_from_request, + parse_string, +) +from synapse.rest.well_known import WellKnownBuilder +from synapse.types import UserID, map_username_to_mxid_localpart from synapse.util.msisdn import phone_number_to_msisdn from .base import ClientV1RestServlet, client_path_patterns @@ -81,30 +82,31 @@ def login_id_thirdparty_from_phone(identifier): class LoginRestServlet(ClientV1RestServlet): PATTERNS = client_path_patterns("/login$") - SAML2_TYPE = "m.login.saml2" CAS_TYPE = "m.login.cas" + SSO_TYPE = "m.login.sso" TOKEN_TYPE = "m.login.token" JWT_TYPE = "m.login.jwt" def __init__(self, hs): super(LoginRestServlet, self).__init__(hs) - self.idp_redirect_url = hs.config.saml2_idp_redirect_url - self.saml2_enabled = hs.config.saml2_enabled self.jwt_enabled = hs.config.jwt_enabled self.jwt_secret = hs.config.jwt_secret self.jwt_algorithm = hs.config.jwt_algorithm self.cas_enabled = hs.config.cas_enabled self.auth_handler = self.hs.get_auth_handler() - self.device_handler = self.hs.get_device_handler() + self.registration_handler = hs.get_registration_handler() self.handlers = hs.get_handlers() + self._well_known_builder = WellKnownBuilder(hs) def on_GET(self, request): flows = [] if self.jwt_enabled: flows.append({"type": LoginRestServlet.JWT_TYPE}) - if self.saml2_enabled: - flows.append({"type": LoginRestServlet.SAML2_TYPE}) if self.cas_enabled: + flows.append({"type": LoginRestServlet.SSO_TYPE}) + + # we advertise CAS for backwards compat, though MSC1721 renamed it + # to SSO. flows.append({"type": LoginRestServlet.CAS_TYPE}) # While its valid for us to advertise this login type generally, @@ -129,29 +131,21 @@ class LoginRestServlet(ClientV1RestServlet): def on_POST(self, request): login_submission = parse_json_object_from_request(request) try: - if self.saml2_enabled and (login_submission["type"] == - LoginRestServlet.SAML2_TYPE): - relay_state = "" - if "relay_state" in login_submission: - relay_state = "&RelayState=" + urllib.parse.quote( - login_submission["relay_state"]) - result = { - "uri": "%s%s" % (self.idp_redirect_url, relay_state) - } - defer.returnValue((200, result)) - elif self.jwt_enabled and (login_submission["type"] == - LoginRestServlet.JWT_TYPE): + if self.jwt_enabled and (login_submission["type"] == + LoginRestServlet.JWT_TYPE): result = yield self.do_jwt_login(login_submission) - defer.returnValue(result) elif login_submission["type"] == LoginRestServlet.TOKEN_TYPE: result = yield self.do_token_login(login_submission) - defer.returnValue(result) else: result = yield self._do_other_login(login_submission) - defer.returnValue(result) except KeyError: raise SynapseError(400, "Missing JSON keys.") + well_known_data = self._well_known_builder.get_well_known() + if well_known_data: + result["well_known"] = well_known_data + defer.returnValue((200, result)) + @defer.inlineCallbacks def _do_other_login(self, login_submission): """Handle non-token/saml/jwt logins @@ -160,7 +154,7 @@ class LoginRestServlet(ClientV1RestServlet): login_submission: Returns: - (int, object): HTTP code/response + dict: HTTP response """ # Log the request we got, but only certain fields to minimise the chance of # logging someone's password (even if they accidentally put it in the wrong @@ -226,11 +220,10 @@ class LoginRestServlet(ClientV1RestServlet): login_submission, ) - device_id = yield self._register_device( - canonical_user_id, login_submission, - ) - access_token = yield auth_handler.get_access_token_for_user_id( - canonical_user_id, device_id, + device_id = login_submission.get("device_id") + initial_display_name = login_submission.get("initial_device_display_name") + device_id, access_token = yield self.registration_handler.register_device( + canonical_user_id, device_id, initial_display_name, ) result = { @@ -243,7 +236,7 @@ class LoginRestServlet(ClientV1RestServlet): if callback is not None: yield callback(result) - defer.returnValue((200, result)) + defer.returnValue(result) @defer.inlineCallbacks def do_token_login(self, login_submission): @@ -252,10 +245,13 @@ class LoginRestServlet(ClientV1RestServlet): user_id = ( yield auth_handler.validate_short_term_login_token_and_get_user_id(token) ) - device_id = yield self._register_device(user_id, login_submission) - access_token = yield auth_handler.get_access_token_for_user_id( - user_id, device_id, + + device_id = login_submission.get("device_id") + initial_display_name = login_submission.get("initial_device_display_name") + device_id, access_token = yield self.registration_handler.register_device( + user_id, device_id, initial_display_name, ) + result = { "user_id": user_id, # may have changed "access_token": access_token, @@ -263,7 +259,7 @@ class LoginRestServlet(ClientV1RestServlet): "device_id": device_id, } - defer.returnValue((200, result)) + defer.returnValue(result) @defer.inlineCallbacks def do_jwt_login(self, login_submission): @@ -292,11 +288,10 @@ class LoginRestServlet(ClientV1RestServlet): auth_handler = self.auth_handler registered_user_id = yield auth_handler.check_user_exists(user_id) if registered_user_id: - device_id = yield self._register_device( - registered_user_id, login_submission - ) - access_token = yield auth_handler.get_access_token_for_user_id( - registered_user_id, device_id, + device_id = login_submission.get("device_id") + initial_display_name = login_submission.get("initial_device_display_name") + device_id, access_token = yield self.registration_handler.register_device( + registered_user_id, device_id, initial_display_name, ) result = { @@ -305,90 +300,30 @@ class LoginRestServlet(ClientV1RestServlet): "home_server": self.hs.hostname, } else: - # TODO: we should probably check that the register isn't going - # to fonx/change our user_id before registering the device - device_id = yield self._register_device(user_id, login_submission) user_id, access_token = ( yield self.handlers.registration_handler.register(localpart=user) ) + + device_id = login_submission.get("device_id") + initial_display_name = login_submission.get("initial_device_display_name") + device_id, access_token = yield self.registration_handler.register_device( + registered_user_id, device_id, initial_display_name, + ) + result = { "user_id": user_id, # may have changed "access_token": access_token, "home_server": self.hs.hostname, } - defer.returnValue((200, result)) - - def _register_device(self, user_id, login_submission): - """Register a device for a user. - - This is called after the user's credentials have been validated, but - before the access token has been issued. - - Args: - (str) user_id: full canonical @user:id - (object) login_submission: dictionary supplied to /login call, from - which we pull device_id and initial_device_name - Returns: - defer.Deferred: (str) device_id - """ - device_id = login_submission.get("device_id") - initial_display_name = login_submission.get( - "initial_device_display_name") - return self.device_handler.check_device_registered( - user_id, device_id, initial_display_name - ) + defer.returnValue(result) -class SAML2RestServlet(ClientV1RestServlet): - PATTERNS = client_path_patterns("/login/saml2", releases=()) +class CasRedirectServlet(RestServlet): + PATTERNS = client_path_patterns("/login/(cas|sso)/redirect") def __init__(self, hs): - super(SAML2RestServlet, self).__init__(hs) - self.sp_config = hs.config.saml2_config_path - self.handlers = hs.get_handlers() - - @defer.inlineCallbacks - def on_POST(self, request): - saml2_auth = None - try: - conf = config.SPConfig() - conf.load_file(self.sp_config) - SP = Saml2Client(conf) - saml2_auth = SP.parse_authn_request_response( - request.args['SAMLResponse'][0], BINDING_HTTP_POST) - except Exception as e: # Not authenticated - logger.exception(e) - if saml2_auth and saml2_auth.status_ok() and not saml2_auth.not_signed: - username = saml2_auth.name_id.text - handler = self.handlers.registration_handler - (user_id, token) = yield handler.register_saml2(username) - # Forward to the RelayState callback along with ava - if 'RelayState' in request.args: - request.redirect(urllib.parse.unquote( - request.args['RelayState'][0]) + - '?status=authenticated&access_token=' + - token + '&user_id=' + user_id + '&ava=' + - urllib.quote(json.dumps(saml2_auth.ava))) - finish_request(request) - defer.returnValue(None) - defer.returnValue((200, {"status": "authenticated", - "user_id": user_id, "token": token, - "ava": saml2_auth.ava})) - elif 'RelayState' in request.args: - request.redirect(urllib.parse.unquote( - request.args['RelayState'][0]) + - '?status=not_authenticated') - finish_request(request) - defer.returnValue(None) - defer.returnValue((200, {"status": "not_authenticated"})) - - -class CasRedirectServlet(ClientV1RestServlet): - PATTERNS = client_path_patterns("/login/cas/redirect", releases=()) - - def __init__(self, hs): - super(CasRedirectServlet, self).__init__(hs) + super(CasRedirectServlet, self).__init__() self.cas_server_url = hs.config.cas_server_url.encode('ascii') self.cas_service_url = hs.config.cas_service_url.encode('ascii') @@ -416,17 +351,15 @@ class CasTicketServlet(ClientV1RestServlet): self.cas_server_url = hs.config.cas_server_url self.cas_service_url = hs.config.cas_service_url self.cas_required_attributes = hs.config.cas_required_attributes - self.auth_handler = hs.get_auth_handler() - self.handlers = hs.get_handlers() - self.macaroon_gen = hs.get_macaroon_generator() + self._sso_auth_handler = SSOAuthHandler(hs) @defer.inlineCallbacks def on_GET(self, request): - client_redirect_url = request.args[b"redirectUrl"][0] + client_redirect_url = parse_string(request, "redirectUrl", required=True) http_client = self.hs.get_simple_http_client() uri = self.cas_server_url + "/proxyValidate" args = { - "ticket": request.args[b"ticket"][0].decode('ascii'), + "ticket": parse_string(request, "ticket", required=True), "service": self.cas_service_url } try: @@ -438,7 +371,6 @@ class CasTicketServlet(ClientV1RestServlet): result = yield self.handle_cas_response(request, body, client_redirect_url) defer.returnValue(result) - @defer.inlineCallbacks def handle_cas_response(self, request, cas_response_body, client_redirect_url): user, attributes = self.parse_cas_response(cas_response_body) @@ -454,28 +386,9 @@ class CasTicketServlet(ClientV1RestServlet): if required_value != actual_value: raise LoginError(401, "Unauthorized", errcode=Codes.UNAUTHORIZED) - user_id = UserID(user, self.hs.hostname).to_string() - auth_handler = self.auth_handler - registered_user_id = yield auth_handler.check_user_exists(user_id) - if not registered_user_id: - registered_user_id, _ = ( - yield self.handlers.registration_handler.register(localpart=user) - ) - - login_token = self.macaroon_gen.generate_short_term_login_token( - registered_user_id + return self._sso_auth_handler.on_successful_auth( + user, request, client_redirect_url, ) - redirect_url = self.add_login_token_to_redirect_url(client_redirect_url, - login_token) - request.redirect(redirect_url) - finish_request(request) - - def add_login_token_to_redirect_url(self, url, token): - url_parts = list(urllib.parse.urlparse(url)) - query = dict(urllib.parse.parse_qsl(url_parts[4])) - query.update({"loginToken": token}) - url_parts[4] = urllib.parse.urlencode(query).encode('ascii') - return urllib.parse.urlunparse(url_parts) def parse_cas_response(self, cas_response_body): user = None @@ -510,10 +423,78 @@ class CasTicketServlet(ClientV1RestServlet): return user, attributes +class SSOAuthHandler(object): + """ + Utility class for Resources and Servlets which handle the response from a SSO + service + + Args: + hs (synapse.server.HomeServer) + """ + def __init__(self, hs): + self._hostname = hs.hostname + self._auth_handler = hs.get_auth_handler() + self._registration_handler = hs.get_registration_handler() + self._macaroon_gen = hs.get_macaroon_generator() + + @defer.inlineCallbacks + def on_successful_auth( + self, username, request, client_redirect_url, + user_display_name=None, + ): + """Called once the user has successfully authenticated with the SSO. + + Registers the user if necessary, and then returns a redirect (with + a login token) to the client. + + Args: + username (unicode|bytes): the remote user id. We'll map this onto + something sane for a MXID localpath. + + request (SynapseRequest): the incoming request from the browser. We'll + respond to it with a redirect. + + client_redirect_url (unicode): the redirect_url the client gave us when + it first started the process. + + user_display_name (unicode|None): if set, and we have to register a new user, + we will set their displayname to this. + + Returns: + Deferred[none]: Completes once we have handled the request. + """ + localpart = map_username_to_mxid_localpart(username) + user_id = UserID(localpart, self._hostname).to_string() + registered_user_id = yield self._auth_handler.check_user_exists(user_id) + if not registered_user_id: + registered_user_id, _ = ( + yield self._registration_handler.register( + localpart=localpart, + generate_token=False, + default_display_name=user_display_name, + ) + ) + + login_token = self._macaroon_gen.generate_short_term_login_token( + registered_user_id + ) + redirect_url = self._add_login_token_to_redirect_url( + client_redirect_url, login_token + ) + request.redirect(redirect_url) + finish_request(request) + + @staticmethod + def _add_login_token_to_redirect_url(url, token): + url_parts = list(urllib.parse.urlparse(url)) + query = dict(urllib.parse.parse_qsl(url_parts[4])) + query.update({"loginToken": token}) + url_parts[4] = urllib.parse.urlencode(query) + return urllib.parse.urlunparse(url_parts) + + def register_servlets(hs, http_server): LoginRestServlet(hs).register(http_server) - if hs.config.saml2_enabled: - SAML2RestServlet(hs).register(http_server) if hs.config.cas_enabled: CasRedirectServlet(hs).register(http_server) CasTicketServlet(hs).register(http_server) |