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-rw-r--r--synapse/rest/synapse/client/__init__.py2
-rw-r--r--synapse/rest/synapse/client/new_user_consent.py97
-rw-r--r--synapse/rest/synapse/client/pick_username.py14
3 files changed, 110 insertions, 3 deletions
diff --git a/synapse/rest/synapse/client/__init__.py b/synapse/rest/synapse/client/__init__.py
index 6acbc03d73..02310c1900 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 0000000000..b2e0f93810
--- /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
+        )
diff --git a/synapse/rest/synapse/client/pick_username.py b/synapse/rest/synapse/client/pick_username.py
index 27540d3bbe..96077cfcd1 100644
--- a/synapse/rest/synapse/client/pick_username.py
+++ b/synapse/rest/synapse/client/pick_username.py
@@ -14,7 +14,7 @@
 # limitations under the License.
 
 import logging
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, List
 
 from twisted.web.http import Request
 from twisted.web.resource import Resource
@@ -26,7 +26,7 @@ from synapse.http.server import (
     DirectServeJsonResource,
     respond_with_html,
 )
-from synapse.http.servlet import parse_string
+from synapse.http.servlet import parse_boolean, parse_string
 from synapse.http.site import SynapseRequest
 from synapse.util.templates import build_jinja_env
 
@@ -113,11 +113,19 @@ class AccountDetailsResource(DirectServeHtmlResource):
 
         try:
             localpart = parse_string(request, "username", required=True)
+            use_display_name = parse_boolean(request, "use_display_name", default=False)
+
+            try:
+                emails_to_use = [
+                    val.decode("utf-8") for val in request.args.get(b"use_email", [])
+                ]  # type: List[str]
+            except ValueError:
+                raise SynapseError(400, "Query parameter use_email must be utf-8")
         except SynapseError as e:
             logger.warning("[session %s] bad param: %s", session_id, e)
             self._sso_handler.render_error(request, "bad_param", e.msg, code=e.code)
             return
 
         await self._sso_handler.handle_submit_username_request(
-            request, localpart, session_id
+            request, session_id, localpart, use_display_name, emails_to_use
         )