diff options
Diffstat (limited to 'synapse/config/room_directory.py')
| -rw-r--r-- | synapse/config/room_directory.py | 170 |
1 files changed, 144 insertions, 26 deletions
diff --git a/synapse/config/room_directory.py b/synapse/config/room_directory.py index 9da13ab11b..9b897abe3c 100644 --- a/synapse/config/room_directory.py +++ b/synapse/config/room_directory.py @@ -20,12 +20,37 @@ from ._base import Config, ConfigError class RoomDirectoryConfig(Config): def read_config(self, config): - alias_creation_rules = config["alias_creation_rules"] + alias_creation_rules = config.get("alias_creation_rules") - self._alias_creation_rules = [ - _AliasRule(rule) - for rule in alias_creation_rules - ] + if alias_creation_rules is not None: + self._alias_creation_rules = [ + _RoomDirectoryRule("alias_creation_rules", rule) + for rule in alias_creation_rules + ] + else: + self._alias_creation_rules = [ + _RoomDirectoryRule( + "alias_creation_rules", { + "action": "allow", + } + ) + ] + + room_list_publication_rules = config.get("room_list_publication_rules") + + if room_list_publication_rules is not None: + self._room_list_publication_rules = [ + _RoomDirectoryRule("room_list_publication_rules", rule) + for rule in room_list_publication_rules + ] + else: + self._room_list_publication_rules = [ + _RoomDirectoryRule( + "room_list_publication_rules", { + "action": "allow", + } + ) + ] def default_config(self, config_dir_path, server_name, **kwargs): return """ @@ -33,60 +58,138 @@ class RoomDirectoryConfig(Config): # 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. An empty list means no one + # can create aliases. + # + # Options for the rules include: + # + # user_id: Matches against the creator of the alias + # alias: Matches against the alias being created + # room_id: Matches against the room ID the alias is being pointed at + # action: Whether to "allow" or "deny" the request if the rule matches + # + # The default is: + # + #alias_creation_rules: + # - user_id: "*" + # alias: "*" + # room_id: "*" + # action: allow + + # The `room_list_publication_rules` option controls who can publish and + # which rooms can be published in the public room list. + # + # The format of this option is the same as that for + # `alias_creation_rules`. # - # If no rules match the request is denied. - alias_creation_rules: - - user_id: "*" - alias: "*" - action: allow + # If the room has one or more aliases associated with it, only one of + # the aliases needs to match the alias rule. If there are no aliases + # then only rules with `alias: *` match. + # + # If no rules match the request is denied. An empty list means no one + # can publish rooms. + # + # Options for the rules include: + # + # user_id: Matches agaisnt the creator of the alias + # room_id: Matches against the room ID being published + # alias: Matches against any current local or canonical aliases + # associated with the room + # action: Whether to "allow" or "deny" the request if the rule matches + # + # The default is: + # + #room_list_publication_rules: + # - user_id: "*" + # alias: "*" + # 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): + """ + Args: + option_name (str): Name of the config option this rule belongs to + rule (dict): The rule as specified in the config + """ + 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 +199,22 @@ class _AliasRule(object): if not self._user_id_regex.match(user_id): return False - if not self._alias_regex.match(alias): + if not self._room_id_regex.match(room_id): return False - return True + # We only have alias checks left, so we can short circuit if the alias + # rule matches everything. + if self._alias_matches_all: + return True + + # If we are not given any aliases then this rule only matches if the + # alias glob matches all aliases, which we checked above. + if not aliases: + return False + + # Otherwise, we just need one alias to match + for alias in aliases: + if self._alias_regex.match(alias): + return True + + return False |