diff options
Diffstat (limited to 'synapse')
| -rw-r--r-- | synapse/config/room_directory.py | 94 | ||||
| -rw-r--r-- | synapse/handlers/directory.py | 29 | ||||
| -rw-r--r-- | synapse/storage/state.py | 25 |
3 files changed, 126 insertions, 22 deletions
diff --git a/synapse/config/room_directory.py b/synapse/config/room_directory.py index 9da13ab11b..a0869ed6ab 100644 --- a/synapse/config/room_directory.py +++ b/synapse/config/room_directory.py @@ -23,70 +23,121 @@ class RoomDirectoryConfig(Config): alias_creation_rules = config["alias_creation_rules"] self._alias_creation_rules = [ - _AliasRule(rule) + _RoomDirectoryRule("alias_creation_rules", rule) for rule in alias_creation_rules ] + room_list_publication_rules = config["room_list_publication_rules"] + + self._room_list_publication_rules = [ + _RoomDirectoryRule("room_list_publication_rules", rule) + for rule in room_list_publication_rules + ] + def default_config(self, config_dir_path, server_name, **kwargs): return """ # The `alias_creation` option controls who's allowed to create aliases # on this server. # # The format of this option is a list of rules that contain globs that - # match against user_id and the new alias (fully qualified with server - # name). The action in the first rule that matches is taken, which can - # currently either be "allow" or "deny". + # match against user_id, room_id and the new alias (fully qualified with + # server name). The action in the first rule that matches is taken, + # which can currently either be "allow" or "deny". + # + # Missing user_id/room_id/alias fields default to "*". # # If no rules match the request is denied. alias_creation_rules: - user_id: "*" - alias: "*" + alias: "*" # This matches alias being created + room_id: "*" + action: allow + + # The `room_list_publication_rules` option control who and what can be + # published in the public room list. + # + # The format of this option is the same as that for + # `alias_creation_rules` + room_list_publication_rules: + - user_id: "*" + alias: "*" # This matches any local or canonical alias + # associated with the room + room_id: "*" action: allow """ - def is_alias_creation_allowed(self, user_id, alias): + def is_alias_creation_allowed(self, user_id, room_id, alias): """Checks if the given user is allowed to create the given alias Args: user_id (str) + room_id (str) alias (str) Returns: boolean: True if user is allowed to crate the alias """ for rule in self._alias_creation_rules: - if rule.matches(user_id, alias): + if rule.matches(user_id, room_id, [alias]): + return rule.action == "allow" + + return False + + def is_publishing_room_allowed(self, user_id, room_id, aliases): + """Checks if the given user is allowed to publish the room + + Args: + user_id (str) + room_id (str) + aliases (list[str]): any local aliases associated with the room + + Returns: + boolean: True if user can publish room + """ + for rule in self._room_list_publication_rules: + if rule.matches(user_id, room_id, aliases): return rule.action == "allow" return False -class _AliasRule(object): - def __init__(self, rule): +class _RoomDirectoryRule(object): + """Helper class to test whether a room directory action is allowed, like + creating an alias or publishing a room. + """ + + def __init__(self, option_name, rule): action = rule["action"] - user_id = rule["user_id"] - alias = rule["alias"] + user_id = rule.get("user_id", "*") + room_id = rule.get("room_id", "*") + alias = rule.get("alias", "*") if action in ("allow", "deny"): self.action = action else: raise ConfigError( - "alias_creation_rules rules can only have action of 'allow'" - " or 'deny'" + "%s rules can only have action of 'allow'" + " or 'deny'" % (option_name,) ) + self._alias_matches_all = alias == "*" + try: self._user_id_regex = glob_to_regex(user_id) self._alias_regex = glob_to_regex(alias) + self._room_id_regex = glob_to_regex(room_id) except Exception as e: raise ConfigError("Failed to parse glob into regex: %s", e) - def matches(self, user_id, alias): - """Tests if this rule matches the given user_id and alias. + def matches(self, user_id, room_id, aliases): + """Tests if this rule matches the given user_id, room_id and aliases. Args: user_id (str) - alias (str) + room_id (str) + aliases (list[str]): The associated aliases to the room. Will be a + single element for testing alias creation, and can be empty for + testing room publishing. Returns: boolean @@ -96,7 +147,16 @@ class _AliasRule(object): if not self._user_id_regex.match(user_id): return False - if not self._alias_regex.match(alias): + # If we are not given any aliases then this rule only matches if the + # alias glob matches all aliases + if not aliases and not self._alias_matches_all: + return False + + for alias in aliases: + if not self._alias_regex.match(alias): + return False + + if not self._room_id_regex.match(room_id): return False return True diff --git a/synapse/handlers/directory.py b/synapse/handlers/directory.py index 6bb254f899..e5319b42a6 100644 --- a/synapse/handlers/directory.py +++ b/synapse/handlers/directory.py @@ -112,7 +112,9 @@ class DirectoryHandler(BaseHandler): 403, "This user is not permitted to create this alias", ) - if not self.config.is_alias_creation_allowed(user_id, room_alias.to_string()): + if not self.config.is_alias_creation_allowed( + user_id, room_id, room_alias.to_string(), + ): # Lets just return a generic message, as there may be all sorts of # reasons why we said no. TODO: Allow configurable error messages # per alias creation rule? @@ -395,9 +397,9 @@ class DirectoryHandler(BaseHandler): room_id (str) visibility (str): "public" or "private" """ - if not self.spam_checker.user_may_publish_room( - requester.user.to_string(), room_id - ): + user_id = requester.user.to_string() + + if not self.spam_checker.user_may_publish_room(user_id, room_id): raise AuthError( 403, "This user is not permitted to publish rooms to the room list" @@ -415,7 +417,24 @@ class DirectoryHandler(BaseHandler): yield self.auth.check_can_change_room_list(room_id, requester.user) - yield self.store.set_room_is_public(room_id, visibility == "public") + room_aliases = yield self.store.get_aliases_for_room(room_id) + canonical_alias = yield self.store.get_canonical_alias_for_room(room_id) + if canonical_alias: + room_aliases.append(canonical_alias) + + making_public = visibility == "public" + + if making_public and not self.config.is_publishing_room_allowed( + user_id, room_id, room_aliases, + ): + # Lets just return a generic message, as there may be all sorts of + # reasons why we said no. TODO: Allow configurable error messages + # per alias creation rule? + raise SynapseError( + 403, "Not allowed to publish room", + ) + + yield self.store.set_room_is_public(room_id, making_public) @defer.inlineCallbacks def edit_published_appservice_room_list(self, appservice_id, network_id, diff --git a/synapse/storage/state.py b/synapse/storage/state.py index d14a7b2538..6ddc4055d2 100644 --- a/synapse/storage/state.py +++ b/synapse/storage/state.py @@ -548,6 +548,31 @@ class StateGroupWorkerStore(EventsWorkerStore, SQLBaseStore): _get_filtered_current_state_ids_txn, ) + @defer.inlineCallbacks + def get_canonical_alias_for_room(self, room_id): + """Get canonical alias for room, if any + + Args: + room_id (str) + + Returns: + Deferred[str|None]: The canonical alias, if any + """ + + state = yield self.get_filtered_current_state_ids(room_id, StateFilter.from_types( + [(EventTypes.CanonicalAlias, "")] + )) + + event_id = state.get((EventTypes.CanonicalAlias, "")) + if not event_id: + return + + event = yield self.get_event(event_id, allow_none=True) + if not event: + return + + defer.returnValue(event.content.get("canonical_alias")) + @cached(max_entries=10000, iterable=True) def get_state_group_delta(self, state_group): """Given a state group try to return a previous group and a delta between |