def _test(self, input):
a = copy_power_levels_contents(input)
self.assertEqual(a["ban"], 50)
self.assertEqual(a["events"]["m.room.name"], 100)
# make sure that changing the copy changes the copy and not the orig
a["ban"] = 10
a["events"]["m.room.power_levels"] = 20
self.assertEqual(input["ban"], 50)
self.assertEqual(input["events"]["m.room.power_levels"], 100)
def clone_existing_room(
self,
requester: Requester,
old_room_id: str,
new_room_id: str,
new_room_version: RoomVersion,
tombstone_event_id: str,
):
"""Populate a new room based on an old room
Args:
requester: the user requesting the upgrade
old_room_id : the id of the room to be replaced
new_room_id: the id to give the new room (should already have been
created with _gemerate_room_id())
new_room_version: the new room version to use
tombstone_event_id: the ID of the tombstone event in the old room.
Returns:
Deferred
"""
user_id = requester.user.to_string()
if not self.spam_checker.user_may_create_room(user_id):
raise SynapseError(403, "You are not permitted to create rooms")
creation_content = {
"room_version": new_room_version.identifier,
"predecessor": {
"room_id": old_room_id,
"event_id": tombstone_event_id
},
}
# Check if old room was non-federatable
# Get old room's create event
old_room_create_event = yield self.store.get_create_event_for_room(
old_room_id)
# Check if the create event specified a non-federatable room
if not old_room_create_event.content.get("m.federate", True):
# If so, mark the new room as non-federatable as well
creation_content["m.federate"] = False
initial_state = dict()
# Replicate relevant room events
types_to_copy = (
(EventTypes.JoinRules, ""),
(EventTypes.Name, ""),
(EventTypes.Topic, ""),
(EventTypes.RoomHistoryVisibility, ""),
(EventTypes.GuestAccess, ""),
(EventTypes.RoomAvatar, ""),
(EventTypes.RoomEncryption, ""),
(EventTypes.ServerACL, ""),
(EventTypes.RelatedGroups, ""),
(EventTypes.PowerLevels, ""),
)
old_room_state_ids = yield self.store.get_filtered_current_state_ids(
old_room_id, StateFilter.from_types(types_to_copy))
# map from event_id to BaseEvent
old_room_state_events = yield self.store.get_events(
old_room_state_ids.values())
for k, old_event_id in iteritems(old_room_state_ids):
old_event = old_room_state_events.get(old_event_id)
if old_event:
initial_state[k] = old_event.content
# deep-copy the power-levels event before we start modifying it
# note that if frozen_dicts are enabled, `power_levels` will be a frozen
# dict so we can't just copy.deepcopy it.
initial_state[(EventTypes.PowerLevels,
"")] = power_levels = copy_power_levels_contents(
initial_state[(EventTypes.PowerLevels, "")])
# Resolve the minimum power level required to send any state event
# We will give the upgrading user this power level temporarily (if necessary) such that
# they are able to copy all of the state events over, then revert them back to their
# original power level afterwards in _update_upgraded_room_pls
# Copy over user power levels now as this will not be possible with >100PL users once
# the room has been created
# Calculate the minimum power level needed to clone the room
event_power_levels = power_levels.get("events", {})
state_default = power_levels.get("state_default", 0)
ban = power_levels.get("ban")
needed_power_level = max(state_default, ban,
max(event_power_levels.values()))
# Raise the requester's power level in the new room if necessary
current_power_level = power_levels["users"][user_id]
if current_power_level < needed_power_level:
power_levels["users"][user_id] = needed_power_level
yield self._send_events_for_new_room(
requester,
new_room_id,
# we expect to override all the presets with initial_state, so this is
# somewhat arbitrary.
preset_config=RoomCreationPreset.PRIVATE_CHAT,
invite_list=[],
initial_state=initial_state,
creation_content=creation_content,
)
# Transfer membership events
old_room_member_state_ids = yield self.store.get_filtered_current_state_ids(
old_room_id, StateFilter.from_types([(EventTypes.Member, None)]))
# map from event_id to BaseEvent
old_room_member_state_events = yield self.store.get_events(
old_room_member_state_ids.values())
for k, old_event in iteritems(old_room_member_state_events):
# Only transfer ban events
if ("membership" in old_event.content
and old_event.content["membership"] == "ban"):
yield self.room_member_handler.update_membership(
requester,
UserID.from_string(old_event["state_key"]),
new_room_id,
"ban",
ratelimit=False,
content=old_event.content,
)
def _update_upgraded_room_pls(
self,
requester: Requester,
old_room_id: str,
new_room_id: str,
old_room_state: StateMap[str],
):
"""Send updated power levels in both rooms after an upgrade
Args:
requester: the user requesting the upgrade
old_room_id: the id of the room to be replaced
new_room_id: the id of the replacement room
old_room_state: the state map for the old room
Returns:
Deferred
"""
old_room_pl_event_id = old_room_state.get((EventTypes.PowerLevels, ""))
if old_room_pl_event_id is None:
logger.warning(
"Not supported: upgrading a room with no PL event. Not setting PLs "
"in old room.")
return
old_room_pl_state = yield self.store.get_event(old_room_pl_event_id)
# we try to stop regular users from speaking by setting the PL required
# to send regular events and invites to 'Moderator' level. That's normally
# 50, but if the default PL in a room is 50 or more, then we set the
# required PL above that.
pl_content = dict(old_room_pl_state.content)
users_default = int(pl_content.get("users_default", 0))
restricted_level = max(users_default + 1, 50)
updated = False
for v in ("invite", "events_default"):
current = int(pl_content.get(v, 0))
if current < restricted_level:
logger.info(
"Setting level for %s in %s to %i (was %i)",
v,
old_room_id,
restricted_level,
current,
)
pl_content[v] = restricted_level
updated = True
else:
logger.info("Not setting level for %s (already %i)", v,
current)
if updated:
try:
yield self.event_creation_handler.create_and_send_nonmember_event(
requester,
{
"type": EventTypes.PowerLevels,
"state_key": "",
"room_id": old_room_id,
"sender": requester.user.to_string(),
"content": pl_content,
},
ratelimit=False,
)
except AuthError as e:
logger.warning("Unable to update PLs in old room: %s", e)
new_pl_content = copy_power_levels_contents(old_room_pl_state.content)
# pre-msc2260 rooms may not have the right setting for aliases. If no other
# value is set, set it now.
events_default = new_pl_content.get("events_default", 0)
new_pl_content.setdefault("events",
{}).setdefault(EventTypes.Aliases,
events_default)
logger.info("Setting correct PLs in new room to %s", new_pl_content)
yield self.event_creation_handler.create_and_send_nonmember_event(
requester,
{
"type": EventTypes.PowerLevels,
"state_key": "",
"room_id": new_room_id,
"sender": requester.user.to_string(),
"content": new_pl_content,
},
ratelimit=False,
)
