diff options
Diffstat (limited to 'synapse')
| -rw-r--r-- | synapse/api/filtering.py | 220 | ||||
| -rw-r--r-- | synapse/rest/client/v2_alpha/filter.py | 2 |
2 files changed, 109 insertions, 113 deletions
diff --git a/synapse/api/filtering.py b/synapse/api/filtering.py index e16c0e559f..b7e5d3222f 100644 --- a/synapse/api/filtering.py +++ b/synapse/api/filtering.py @@ -25,127 +25,25 @@ class Filtering(object): self.store = hs.get_datastore() def get_user_filter(self, user_localpart, filter_id): - return self.store.get_user_filter(user_localpart, filter_id) + result = self.store.get_user_filter(user_localpart, filter_id) + result.addCallback(Filter) + return result def add_user_filter(self, user_localpart, user_filter): self._check_valid_filter(user_filter) return self.store.add_user_filter(user_localpart, user_filter) - def filter_public_user_data(self, events, user, filter_id): - return self._filter_on_key( - events, user, filter_id, ["public_user_data"] - ) - - def filter_private_user_data(self, events, user, filter_id): - return self._filter_on_key( - events, user, filter_id, ["private_user_data"] - ) - - def filter_room_state(self, events, user, filter_id): - return self._filter_on_key( - events, user, filter_id, ["room", "state"] - ) - - def filter_room_events(self, events, user, filter_id): - return self._filter_on_key( - events, user, filter_id, ["room", "events"] - ) - - def filter_room_ephemeral(self, events, user, filter_id): - return self._filter_on_key( - events, user, filter_id, ["room", "ephemeral"] - ) - # TODO(paul): surely we should probably add a delete_user_filter or # replace_user_filter at some point? There's no REST API specified for # them however - @defer.inlineCallbacks - def _filter_on_key(self, events, user, filter_id, keys): - filter_json = yield self.get_user_filter(user.localpart, filter_id) - if not filter_json: - defer.returnValue(events) - - try: - # extract the right definition from the filter - definition = filter_json - for key in keys: - definition = definition[key] - defer.returnValue(self._filter_with_definition(events, definition)) - except KeyError: - # return all events if definition isn't specified. - defer.returnValue(events) - - def _filter_with_definition(self, events, definition): - return [e for e in events if self._passes_definition(definition, e)] - - def _passes_definition(self, definition, event): - """Check if the event passes through the given definition. - - Args: - definition(dict): The definition to check against. - event(Event): The event to check. - Returns: - True if the event passes through the filter. - """ - # Algorithm notes: - # For each key in the definition, check the event meets the criteria: - # * For types: Literal match or prefix match (if ends with wildcard) - # * For senders/rooms: Literal match only - # * "not_" checks take presedence (e.g. if "m.*" is in both 'types' - # and 'not_types' then it is treated as only being in 'not_types') - - # room checks - if hasattr(event, "room_id"): - room_id = event.room_id - allow_rooms = definition.get("rooms", None) - reject_rooms = definition.get("not_rooms", None) - if reject_rooms and room_id in reject_rooms: - return False - if allow_rooms and room_id not in allow_rooms: - return False - - # sender checks - if hasattr(event, "sender"): - # Should we be including event.state_key for some event types? - sender = event.sender - allow_senders = definition.get("senders", None) - reject_senders = definition.get("not_senders", None) - if reject_senders and sender in reject_senders: - return False - if allow_senders and sender not in allow_senders: - return False - - # type checks - if "not_types" in definition: - for def_type in definition["not_types"]: - if self._event_matches_type(event, def_type): - return False - if "types" in definition: - included = False - for def_type in definition["types"]: - if self._event_matches_type(event, def_type): - included = True - break - if not included: - return False - - return True - - def _event_matches_type(self, event, def_type): - if def_type.endswith("*"): - type_prefix = def_type[:-1] - return event.type.startswith(type_prefix) - else: - return event.type == def_type - - def _check_valid_filter(self, user_filter): + def _check_valid_filter(self, user_filter_json): """Check if the provided filter is valid. This inspects all definitions contained within the filter. Args: - user_filter(dict): The filter + user_filter_json(dict): The filter Raises: SynapseError: If the filter is not valid. """ @@ -162,13 +60,13 @@ class Filtering(object): ] for key in top_level_definitions: - if key in user_filter: - self._check_definition(user_filter[key]) + if key in user_filter_json: + self._check_definition(user_filter_json[key]) - if "room" in user_filter: + if "room" in user_filter_json: for key in room_level_definitions: - if key in user_filter["room"]: - self._check_definition(user_filter["room"][key]) + if key in user_filter_json["room"]: + self._check_definition(user_filter_json["room"][key]) def _check_definition(self, definition): """Check if the provided definition is valid. @@ -237,3 +135,101 @@ class Filtering(object): if ("bundle_updates" in definition and type(definition["bundle_updates"]) != bool): raise SynapseError(400, "Bad bundle_updates: expected bool.") + + +class Filter(object): + def __init__(self, filter_json): + self.filter_json = filter_json + + def filter_public_user_data(self, events): + return self._filter_on_key(events, ["public_user_data"]) + + def filter_private_user_data(self, events): + return self._filter_on_key(events, ["private_user_data"]) + + def filter_room_state(self, events): + return self._filter_on_key(events, ["room", "state"]) + + def filter_room_events(self, events): + return self._filter_on_key(events, ["room", "events"]) + + def filter_room_ephemeral(self, events): + return self._filter_on_key(events, ["room", "ephemeral"]) + + def _filter_on_key(self, events, keys): + filter_json = self.filter_json + if not filter_json: + return events + + try: + # extract the right definition from the filter + definition = filter_json + for key in keys: + definition = definition[key] + return self._filter_with_definition(events, definition) + except KeyError: + # return all events if definition isn't specified. + return events + + def _filter_with_definition(self, events, definition): + return [e for e in events if self._passes_definition(definition, e)] + + def _passes_definition(self, definition, event): + """Check if the event passes through the given definition. + + Args: + definition(dict): The definition to check against. + event(Event): The event to check. + Returns: + True if the event passes through the filter. + """ + # Algorithm notes: + # For each key in the definition, check the event meets the criteria: + # * For types: Literal match or prefix match (if ends with wildcard) + # * For senders/rooms: Literal match only + # * "not_" checks take presedence (e.g. if "m.*" is in both 'types' + # and 'not_types' then it is treated as only being in 'not_types') + + # room checks + if hasattr(event, "room_id"): + room_id = event.room_id + allow_rooms = definition.get("rooms", None) + reject_rooms = definition.get("not_rooms", None) + if reject_rooms and room_id in reject_rooms: + return False + if allow_rooms and room_id not in allow_rooms: + return False + + # sender checks + if hasattr(event, "sender"): + # Should we be including event.state_key for some event types? + sender = event.sender + allow_senders = definition.get("senders", None) + reject_senders = definition.get("not_senders", None) + if reject_senders and sender in reject_senders: + return False + if allow_senders and sender not in allow_senders: + return False + + # type checks + if "not_types" in definition: + for def_type in definition["not_types"]: + if self._event_matches_type(event, def_type): + return False + if "types" in definition: + included = False + for def_type in definition["types"]: + if self._event_matches_type(event, def_type): + included = True + break + if not included: + return False + + return True + + def _event_matches_type(self, event, def_type): + if def_type.endswith("*"): + type_prefix = def_type[:-1] + return event.type.startswith(type_prefix) + else: + return event.type == def_type diff --git a/synapse/rest/client/v2_alpha/filter.py b/synapse/rest/client/v2_alpha/filter.py index cee06ccaca..6ddc495d23 100644 --- a/synapse/rest/client/v2_alpha/filter.py +++ b/synapse/rest/client/v2_alpha/filter.py @@ -59,7 +59,7 @@ class GetFilterRestServlet(RestServlet): filter_id=filter_id, ) - defer.returnValue((200, filter)) + defer.returnValue((200, filter.filter_json)) except KeyError: raise SynapseError(400, "No such filter") |