diff --git a/changelog.d/9276.feature b/changelog.d/9276.feature new file mode 100644 index 000000000..c21b197ca --- /dev/null +++ b/changelog.d/9276.feature @@ -0,0 +1 @@ +Improve the user experience of setting up an account via single-sign on. diff --git a/docs/sample_config.yaml b/docs/sample_config.yaml index eec082ca8..15e974669 100644 --- a/docs/sample_config.yaml +++ b/docs/sample_config.yaml @@ -2003,6 +2003,28 @@ sso: # # * username: the localpart of the user's chosen user id # + # * HTML page allowing the user to consent to the server's terms and + # conditions. This is only shown for new users, and only if + # `user_consent.require_at_registration` is set. + # + # When rendering, this template is given the following variables: + # + # * server_name: the homeserver's name. + # + # * user_id: the user's matrix proposed ID. + # + # * user_profile.display_name: the user's proposed display name, if any. + # + # * consent_version: the version of the terms that the user will be + # shown + # + # * terms_url: a link to the page showing the terms. + # + # The template should render a form which submits the following fields: + # + # * accepted_version: the version of the terms accepted by the user + # (ie, 'consent_version' from the input variables). + # # * HTML page for a confirmation step before redirecting back to the client # with the login token: 'sso_redirect_confirm.html'. # diff --git a/docs/workers.md b/docs/workers.md index 6b8887de3..0da805c33 100644 --- a/docs/workers.md +++ b/docs/workers.md @@ -259,6 +259,7 @@ using): ^/_matrix/client/(api/v1|r0|unstable)/login/sso/redirect ^/_synapse/client/pick_idp$ ^/_synapse/client/pick_username + ^/_synapse/client/new_user_consent$ ^/_synapse/client/sso_register$ # OpenID Connect requests. diff --git a/synapse/config/sso.py b/synapse/config/sso.py index bf82183cd..939eeac6d 100644 --- a/synapse/config/sso.py +++ b/synapse/config/sso.py @@ -158,6 +158,28 @@ class SSOConfig(Config): # # * username: the localpart of the user's chosen user id # + # * HTML page allowing the user to consent to the server's terms and + # conditions. This is only shown for new users, and only if + # `user_consent.require_at_registration` is set. + # + # When rendering, this template is given the following variables: + # + # * server_name: the homeserver's name. + # + # * user_id: the user's matrix proposed ID. + # + # * user_profile.display_name: the user's proposed display name, if any. + # + # * consent_version: the version of the terms that the user will be + # shown + # + # * terms_url: a link to the page showing the terms. + # + # The template should render a form which submits the following fields: + # + # * accepted_version: the version of the terms accepted by the user + # (ie, 'consent_version' from the input variables). + # # * HTML page for a confirmation step before redirecting back to the client # with the login token: 'sso_redirect_confirm.html'. # diff --git a/synapse/handlers/register.py b/synapse/handlers/register.py index b20a5d860..49b085269 100644 --- a/synapse/handlers/register.py +++ b/synapse/handlers/register.py @@ -694,6 +694,8 @@ class RegistrationHandler(BaseHandler): access_token: The access token of the newly logged in device, or None if `inhibit_login` enabled. """ + # TODO: 3pid registration can actually happen on the workers. Consider + # refactoring it. if self.hs.config.worker_app: await self._post_registration_client( user_id=user_id, auth_result=auth_result, access_token=access_token diff --git a/synapse/handlers/sso.py b/synapse/handlers/sso.py index d7ca2918f..b450668f1 100644 --- a/synapse/handlers/sso.py +++ b/synapse/handlers/sso.py @@ -155,6 +155,7 @@ class UsernameMappingSession: chosen_localpart = attr.ib(type=Optional[str], default=None) use_display_name = attr.ib(type=bool, default=True) emails_to_use = attr.ib(type=Collection[str], default=()) + terms_accepted_version = attr.ib(type=Optional[str], default=None) # the HTTP cookie used to track the mapping session id @@ -190,6 +191,8 @@ class SsoHandler: # map from idp_id to SsoIdentityProvider self._identity_providers = {} # type: Dict[str, SsoIdentityProvider] + self._consent_at_registration = hs.config.consent.user_consent_at_registration + def register_identity_provider(self, p: SsoIdentityProvider): p_id = p.idp_id assert p_id not in self._identity_providers @@ -761,6 +764,38 @@ class SsoHandler: ) session.emails_to_use = filtered_emails + # we may now need to collect consent from the user, in which case, redirect + # to the consent-extraction-unit + if self._consent_at_registration: + redirect_url = b"/_synapse/client/new_user_consent" + + # otherwise, redirect to the completion page + else: + redirect_url = b"/_synapse/client/sso_register" + + respond_with_redirect(request, redirect_url) + + async def handle_terms_accepted( + self, request: Request, session_id: str, terms_version: str + ): + """Handle a request to the new-user 'consent' endpoint + + Will serve an HTTP response to the request. + + Args: + request: HTTP request + session_id: ID of the username mapping session, extracted from a cookie + terms_version: the version of the terms which the user viewed and consented + to + """ + logger.info( + "[session %s] User consented to terms version %s", + session_id, + terms_version, + ) + session = self.get_mapping_session(session_id) + session.terms_accepted_version = terms_version + # we're done; now we can register the user respond_with_redirect(request, b"/_synapse/client/sso_register") @@ -816,6 +851,15 @@ class SsoHandler: path=b"/", ) + auth_result = {} + if session.terms_accepted_version: + # TODO: make this less awful. + auth_result[LoginType.TERMS] = True + + await self._registration_handler.post_registration_actions( + user_id, auth_result, access_token=None + ) + await self._auth_handler.complete_sso_login( user_id, request, diff --git a/synapse/res/templates/sso_new_user_consent.html b/synapse/res/templates/sso_new_user_consent.html new file mode 100644 index 000000000..8c33787c5 --- /dev/null +++ b/synapse/res/templates/sso_new_user_consent.html @@ -0,0 +1,39 @@ + + + + + SSO redirect confirmation + + + + +
+

Your account is nearly ready

+

Agree to the terms to create your account.

+
+
+ +
+ +
+
{{ user_profile.display_name }}
+
{{ user_id }}
+
+
+ + +
+ + diff --git a/synapse/rest/synapse/client/__init__.py b/synapse/rest/synapse/client/__init__.py index 6acbc03d7..02310c190 100644 --- a/synapse/rest/synapse/client/__init__.py +++ b/synapse/rest/synapse/client/__init__.py @@ -17,6 +17,7 @@ from typing import TYPE_CHECKING, Mapping from twisted.web.resource import Resource +from synapse.rest.synapse.client.new_user_consent import NewUserConsentResource from synapse.rest.synapse.client.pick_idp import PickIdpResource from synapse.rest.synapse.client.pick_username import pick_username_resource from synapse.rest.synapse.client.sso_register import SsoRegisterResource @@ -39,6 +40,7 @@ def build_synapse_client_resource_tree(hs: "HomeServer") -> Mapping[str, Resourc # enabled (they just won't work very well if it's not) "/_synapse/client/pick_idp": PickIdpResource(hs), "/_synapse/client/pick_username": pick_username_resource(hs), + "/_synapse/client/new_user_consent": NewUserConsentResource(hs), "/_synapse/client/sso_register": SsoRegisterResource(hs), } diff --git a/synapse/rest/synapse/client/new_user_consent.py b/synapse/rest/synapse/client/new_user_consent.py new file mode 100644 index 000000000..b2e0f9381 --- /dev/null +++ b/synapse/rest/synapse/client/new_user_consent.py @@ -0,0 +1,97 @@ +# -*- coding: utf-8 -*- +# Copyright 2021 The Matrix.org Foundation C.I.C. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +import logging +from typing import TYPE_CHECKING + +from twisted.web.http import Request + +from synapse.api.errors import SynapseError +from synapse.handlers.sso import get_username_mapping_session_cookie_from_request +from synapse.http.server import DirectServeHtmlResource, respond_with_html +from synapse.http.servlet import parse_string +from synapse.types import UserID +from synapse.util.templates import build_jinja_env + +if TYPE_CHECKING: + from synapse.server import HomeServer + +logger = logging.getLogger(__name__) + + +class NewUserConsentResource(DirectServeHtmlResource): + """A resource which collects consent to the server's terms from a new user + + This resource gets mounted at /_synapse/client/new_user_consent, and is shown + when we are automatically creating a new user due to an SSO login. + + It shows a template which prompts the user to go and read the Ts and Cs, and click + a clickybox if they have done so. + """ + + def __init__(self, hs: "HomeServer"): + super().__init__() + self._sso_handler = hs.get_sso_handler() + self._server_name = hs.hostname + self._consent_version = hs.config.consent.user_consent_version + + def template_search_dirs(): + if hs.config.sso.sso_template_dir: + yield hs.config.sso.sso_template_dir + yield hs.config.sso.default_template_dir + + self._jinja_env = build_jinja_env(template_search_dirs(), hs.config) + + async def _async_render_GET(self, request: Request) -> None: + try: + session_id = get_username_mapping_session_cookie_from_request(request) + session = self._sso_handler.get_mapping_session(session_id) + except SynapseError as e: + logger.warning("Error fetching session: %s", e) + self._sso_handler.render_error(request, "bad_session", e.msg, code=e.code) + return + + user_id = UserID(session.chosen_localpart, self._server_name) + user_profile = { + "display_name": session.display_name, + } + + template_params = { + "user_id": user_id.to_string(), + "user_profile": user_profile, + "consent_version": self._consent_version, + "terms_url": "/_matrix/consent?v=%s" % (self._consent_version,), + } + + template = self._jinja_env.get_template("sso_new_user_consent.html") + html = template.render(template_params) + respond_with_html(request, 200, html) + + async def _async_render_POST(self, request: Request): + try: + session_id = get_username_mapping_session_cookie_from_request(request) + except SynapseError as e: + logger.warning("Error fetching session cookie: %s", e) + self._sso_handler.render_error(request, "bad_session", e.msg, code=e.code) + return + + try: + accepted_version = parse_string(request, "accepted_version", required=True) + except SynapseError as e: + self._sso_handler.render_error(request, "bad_param", e.msg, code=e.code) + return + + await self._sso_handler.handle_terms_accepted( + request, session_id, accepted_version + )