diff --git a/synapse/handlers/groups_local.py b/synapse/handlers/groups_local.py
new file mode 100644
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--- /dev/null
+++ b/synapse/handlers/groups_local.py
@@ -0,0 +1,417 @@
+# -*- coding: utf-8 -*-
+# Copyright 2017 Vector Creations Ltd
+#
+# 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.
+
+from twisted.internet import defer
+
+from synapse.api.errors import SynapseError
+from synapse.types import get_domain_from_id
+
+import logging
+
+logger = logging.getLogger(__name__)
+
+
+def _create_rerouter(func_name):
+ """Returns a function that looks at the group id and calls the function
+ on federation or the local group server if the group is local
+ """
+ def f(self, group_id, *args, **kwargs):
+ if self.is_mine_id(group_id):
+ return getattr(self.groups_server_handler, func_name)(
+ group_id, *args, **kwargs
+ )
+ else:
+ destination = get_domain_from_id(group_id)
+ return getattr(self.transport_client, func_name)(
+ destination, group_id, *args, **kwargs
+ )
+ return f
+
+
+class GroupsLocalHandler(object):
+ def __init__(self, hs):
+ self.hs = hs
+ self.store = hs.get_datastore()
+ self.room_list_handler = hs.get_room_list_handler()
+ self.groups_server_handler = hs.get_groups_server_handler()
+ self.transport_client = hs.get_federation_transport_client()
+ self.auth = hs.get_auth()
+ self.clock = hs.get_clock()
+ self.keyring = hs.get_keyring()
+ self.is_mine_id = hs.is_mine_id
+ self.signing_key = hs.config.signing_key[0]
+ self.server_name = hs.hostname
+ self.notifier = hs.get_notifier()
+ self.attestations = hs.get_groups_attestation_signing()
+
+ self.profile_handler = hs.get_profile_handler()
+
+ # Ensure attestations get renewed
+ hs.get_groups_attestation_renewer()
+
+ # The following functions merely route the query to the local groups server
+ # or federation depending on if the group is local or remote
+
+ get_group_profile = _create_rerouter("get_group_profile")
+ update_group_profile = _create_rerouter("update_group_profile")
+ get_rooms_in_group = _create_rerouter("get_rooms_in_group")
+
+ get_invited_users_in_group = _create_rerouter("get_invited_users_in_group")
+
+ add_room_to_group = _create_rerouter("add_room_to_group")
+ remove_room_from_group = _create_rerouter("remove_room_from_group")
+
+ update_group_summary_room = _create_rerouter("update_group_summary_room")
+ delete_group_summary_room = _create_rerouter("delete_group_summary_room")
+
+ update_group_category = _create_rerouter("update_group_category")
+ delete_group_category = _create_rerouter("delete_group_category")
+ get_group_category = _create_rerouter("get_group_category")
+ get_group_categories = _create_rerouter("get_group_categories")
+
+ update_group_summary_user = _create_rerouter("update_group_summary_user")
+ delete_group_summary_user = _create_rerouter("delete_group_summary_user")
+
+ update_group_role = _create_rerouter("update_group_role")
+ delete_group_role = _create_rerouter("delete_group_role")
+ get_group_role = _create_rerouter("get_group_role")
+ get_group_roles = _create_rerouter("get_group_roles")
+
+ @defer.inlineCallbacks
+ def get_group_summary(self, group_id, requester_user_id):
+ """Get the group summary for a group.
+
+ If the group is remote we check that the users have valid attestations.
+ """
+ if self.is_mine_id(group_id):
+ res = yield self.groups_server_handler.get_group_summary(
+ group_id, requester_user_id
+ )
+ else:
+ res = yield self.transport_client.get_group_summary(
+ get_domain_from_id(group_id), group_id, requester_user_id,
+ )
+
+ group_server_name = get_domain_from_id(group_id)
+
+ # Loop through the users and validate the attestations.
+ chunk = res["users_section"]["users"]
+ valid_users = []
+ for entry in chunk:
+ g_user_id = entry["user_id"]
+ attestation = entry.pop("attestation", {})
+ try:
+ if get_domain_from_id(g_user_id) != group_server_name:
+ yield self.attestations.verify_attestation(
+ attestation,
+ group_id=group_id,
+ user_id=g_user_id,
+ server_name=get_domain_from_id(g_user_id),
+ )
+ valid_users.append(entry)
+ except Exception as e:
+ logger.info("Failed to verify user is in group: %s", e)
+
+ res["users_section"]["users"] = valid_users
+
+ res["users_section"]["users"].sort(key=lambda e: e.get("order", 0))
+ res["rooms_section"]["rooms"].sort(key=lambda e: e.get("order", 0))
+
+ # Add `is_publicised` flag to indicate whether the user has publicised their
+ # membership of the group on their profile
+ result = yield self.store.get_publicised_groups_for_user(requester_user_id)
+ is_publicised = group_id in result
+
+ res.setdefault("user", {})["is_publicised"] = is_publicised
+
+ defer.returnValue(res)
+
+ @defer.inlineCallbacks
+ def create_group(self, group_id, user_id, content):
+ """Create a group
+ """
+
+ logger.info("Asking to create group with ID: %r", group_id)
+
+ if self.is_mine_id(group_id):
+ res = yield self.groups_server_handler.create_group(
+ group_id, user_id, content
+ )
+ local_attestation = None
+ remote_attestation = None
+ else:
+ local_attestation = self.attestations.create_attestation(group_id, user_id)
+ content["attestation"] = local_attestation
+
+ content["user_profile"] = yield self.profile_handler.get_profile(user_id)
+
+ res = yield self.transport_client.create_group(
+ get_domain_from_id(group_id), group_id, user_id, content,
+ )
+
+ remote_attestation = res["attestation"]
+ yield self.attestations.verify_attestation(
+ remote_attestation,
+ group_id=group_id,
+ user_id=user_id,
+ server_name=get_domain_from_id(group_id),
+ )
+
+ is_publicised = content.get("publicise", False)
+ token = yield self.store.register_user_group_membership(
+ group_id, user_id,
+ membership="join",
+ is_admin=True,
+ local_attestation=local_attestation,
+ remote_attestation=remote_attestation,
+ is_publicised=is_publicised,
+ )
+ self.notifier.on_new_event(
+ "groups_key", token, users=[user_id],
+ )
+
+ defer.returnValue(res)
+
+ @defer.inlineCallbacks
+ def get_users_in_group(self, group_id, requester_user_id):
+ """Get users in a group
+ """
+ if self.is_mine_id(group_id):
+ res = yield self.groups_server_handler.get_users_in_group(
+ group_id, requester_user_id
+ )
+ defer.returnValue(res)
+
+ group_server_name = get_domain_from_id(group_id)
+
+ res = yield self.transport_client.get_users_in_group(
+ get_domain_from_id(group_id), group_id, requester_user_id,
+ )
+
+ chunk = res["chunk"]
+ valid_entries = []
+ for entry in chunk:
+ g_user_id = entry["user_id"]
+ attestation = entry.pop("attestation", {})
+ try:
+ if get_domain_from_id(g_user_id) != group_server_name:
+ yield self.attestations.verify_attestation(
+ attestation,
+ group_id=group_id,
+ user_id=g_user_id,
+ server_name=get_domain_from_id(g_user_id),
+ )
+ valid_entries.append(entry)
+ except Exception as e:
+ logger.info("Failed to verify user is in group: %s", e)
+
+ res["chunk"] = valid_entries
+
+ defer.returnValue(res)
+
+ @defer.inlineCallbacks
+ def join_group(self, group_id, user_id, content):
+ """Request to join a group
+ """
+ raise NotImplementedError() # TODO
+
+ @defer.inlineCallbacks
+ def accept_invite(self, group_id, user_id, content):
+ """Accept an invite to a group
+ """
+ if self.is_mine_id(group_id):
+ yield self.groups_server_handler.accept_invite(
+ group_id, user_id, content
+ )
+ local_attestation = None
+ remote_attestation = None
+ else:
+ local_attestation = self.attestations.create_attestation(group_id, user_id)
+ content["attestation"] = local_attestation
+
+ res = yield self.transport_client.accept_group_invite(
+ get_domain_from_id(group_id), group_id, user_id, content,
+ )
+
+ remote_attestation = res["attestation"]
+
+ yield self.attestations.verify_attestation(
+ remote_attestation,
+ group_id=group_id,
+ user_id=user_id,
+ server_name=get_domain_from_id(group_id),
+ )
+
+ # TODO: Check that the group is public and we're being added publically
+ is_publicised = content.get("publicise", False)
+
+ token = yield self.store.register_user_group_membership(
+ group_id, user_id,
+ membership="join",
+ is_admin=False,
+ local_attestation=local_attestation,
+ remote_attestation=remote_attestation,
+ is_publicised=is_publicised,
+ )
+ self.notifier.on_new_event(
+ "groups_key", token, users=[user_id],
+ )
+
+ defer.returnValue({})
+
+ @defer.inlineCallbacks
+ def invite(self, group_id, user_id, requester_user_id, config):
+ """Invite a user to a group
+ """
+ content = {
+ "requester_user_id": requester_user_id,
+ "config": config,
+ }
+ if self.is_mine_id(group_id):
+ res = yield self.groups_server_handler.invite_to_group(
+ group_id, user_id, requester_user_id, content,
+ )
+ else:
+ res = yield self.transport_client.invite_to_group(
+ get_domain_from_id(group_id), group_id, user_id, requester_user_id,
+ content,
+ )
+
+ defer.returnValue(res)
+
+ @defer.inlineCallbacks
+ def on_invite(self, group_id, user_id, content):
+ """One of our users were invited to a group
+ """
+ # TODO: Support auto join and rejection
+
+ if not self.is_mine_id(user_id):
+ raise SynapseError(400, "User not on this server")
+
+ local_profile = {}
+ if "profile" in content:
+ if "name" in content["profile"]:
+ local_profile["name"] = content["profile"]["name"]
+ if "avatar_url" in content["profile"]:
+ local_profile["avatar_url"] = content["profile"]["avatar_url"]
+
+ token = yield self.store.register_user_group_membership(
+ group_id, user_id,
+ membership="invite",
+ content={"profile": local_profile, "inviter": content["inviter"]},
+ )
+ self.notifier.on_new_event(
+ "groups_key", token, users=[user_id],
+ )
+ try:
+ user_profile = yield self.profile_handler.get_profile(user_id)
+ except Exception as e:
+ logger.warn("No profile for user %s: %s", user_id, e)
+ user_profile = {}
+
+ defer.returnValue({"state": "invite", "user_profile": user_profile})
+
+ @defer.inlineCallbacks
+ def remove_user_from_group(self, group_id, user_id, requester_user_id, content):
+ """Remove a user from a group
+ """
+ if user_id == requester_user_id:
+ token = yield self.store.register_user_group_membership(
+ group_id, user_id,
+ membership="leave",
+ )
+ self.notifier.on_new_event(
+ "groups_key", token, users=[user_id],
+ )
+
+ # TODO: Should probably remember that we tried to leave so that we can
+ # retry if the group server is currently down.
+
+ if self.is_mine_id(group_id):
+ res = yield self.groups_server_handler.remove_user_from_group(
+ group_id, user_id, requester_user_id, content,
+ )
+ else:
+ content["requester_user_id"] = requester_user_id
+ res = yield self.transport_client.remove_user_from_group(
+ get_domain_from_id(group_id), group_id, requester_user_id,
+ user_id, content,
+ )
+
+ defer.returnValue(res)
+
+ @defer.inlineCallbacks
+ def user_removed_from_group(self, group_id, user_id, content):
+ """One of our users was removed/kicked from a group
+ """
+ # TODO: Check if user in group
+ token = yield self.store.register_user_group_membership(
+ group_id, user_id,
+ membership="leave",
+ )
+ self.notifier.on_new_event(
+ "groups_key", token, users=[user_id],
+ )
+
+ @defer.inlineCallbacks
+ def get_joined_groups(self, user_id):
+ group_ids = yield self.store.get_joined_groups(user_id)
+ defer.returnValue({"groups": group_ids})
+
+ @defer.inlineCallbacks
+ def get_publicised_groups_for_user(self, user_id):
+ if self.hs.is_mine_id(user_id):
+ result = yield self.store.get_publicised_groups_for_user(user_id)
+ defer.returnValue({"groups": result})
+ else:
+ result = yield self.transport_client.get_publicised_groups_for_user(
+ get_domain_from_id(user_id), user_id
+ )
+ # TODO: Verify attestations
+ defer.returnValue(result)
+
+ @defer.inlineCallbacks
+ def bulk_get_publicised_groups(self, user_ids, proxy=True):
+ destinations = {}
+ local_users = set()
+
+ for user_id in user_ids:
+ if self.hs.is_mine_id(user_id):
+ local_users.add(user_id)
+ else:
+ destinations.setdefault(
+ get_domain_from_id(user_id), set()
+ ).add(user_id)
+
+ if not proxy and destinations:
+ raise SynapseError(400, "Some user_ids are not local")
+
+ results = {}
+ failed_results = []
+ for destination, dest_user_ids in destinations.iteritems():
+ try:
+ r = yield self.transport_client.bulk_get_publicised_groups(
+ destination, list(dest_user_ids),
+ )
+ results.update(r["users"])
+ except Exception:
+ failed_results.extend(dest_user_ids)
+
+ for uid in local_users:
+ results[uid] = yield self.store.get_publicised_groups_for_user(
+ uid
+ )
+
+ defer.returnValue({"users": results})
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