def __init__(self, option_name: str, rule: JsonDict):
"""
Args:
option_name: Name of the config option this rule belongs to
rule: The rule as specified in the config
"""
action = rule["action"]
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(
"%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") from e
def _glob_matches(glob: str, value: str, word_boundary: bool = False) -> bool:
"""Tests if value matches glob.
Args:
glob
value: String to test against glob.
word_boundary: Whether to match against word boundaries or entire
string. Defaults to False.
"""
try:
r = regex_cache.get((glob, True, word_boundary), None)
if not r:
r = glob_to_regex(glob, word_boundary=word_boundary)
regex_cache[(glob, True, word_boundary)] = r
return bool(r.search(value))
except re.error:
logger.warning("Failed to parse glob to regex: %r", glob)
return False
def read_config(self, config: JsonDict, **kwargs: Any) -> None:
self.tls_certificate_file = self.abspath(config.get("tls_certificate_path"))
self.tls_private_key_file = self.abspath(config.get("tls_private_key_path"))
if self.root.server.has_tls_listener():
if not self.tls_certificate_file:
raise ConfigError(
"tls_certificate_path must be specified if TLS-enabled listeners are "
"configured."
)
if not self.tls_private_key_file:
raise ConfigError(
"tls_private_key_path must be specified if TLS-enabled listeners are "
"configured."
)
# Whether to verify certificates on outbound federation traffic
self.federation_verify_certificates = config.get(
"federation_verify_certificates", True
)
# Minimum TLS version to use for outbound federation traffic
self.federation_client_minimum_tls_version = str(
config.get("federation_client_minimum_tls_version", 1)
)
if self.federation_client_minimum_tls_version not in ["1", "1.1", "1.2", "1.3"]:
raise ConfigError(
"federation_client_minimum_tls_version must be one of: 1, 1.1, 1.2, 1.3"
)
# Prevent people shooting themselves in the foot here by setting it to
# the biggest number blindly
if self.federation_client_minimum_tls_version == "1.3":
if getattr(SSL, "OP_NO_TLSv1_3", None) is None:
raise ConfigError(
"federation_client_minimum_tls_version cannot be 1.3, "
"your OpenSSL does not support it"
)
# Whitelist of domains to not verify certificates for
fed_whitelist_entries = config.get(
"federation_certificate_verification_whitelist", []
)
if fed_whitelist_entries is None:
fed_whitelist_entries = []
# Support globs (*) in whitelist values
self.federation_certificate_verification_whitelist: List[Pattern] = []
for entry in fed_whitelist_entries:
try:
entry_regex = glob_to_regex(entry.encode("ascii").decode("ascii"))
except UnicodeEncodeError:
raise ConfigError(
"IDNA domain names are not allowed in the "
"federation_certificate_verification_whitelist: %s" % (entry,)
)
# Convert globs to regex
self.federation_certificate_verification_whitelist.append(entry_regex)
# List of custom certificate authorities for federation traffic validation
custom_ca_list = config.get("federation_custom_ca_list", None)
# Read in and parse custom CA certificates
self.federation_ca_trust_root = None
if custom_ca_list is not None:
if len(custom_ca_list) == 0:
# A trustroot cannot be generated without any CA certificates.
# Raise an error if this option has been specified without any
# corresponding certificates.
raise ConfigError(
"federation_custom_ca_list specified without "
"any certificate files"
)
certs = []
for ca_file in custom_ca_list:
logger.debug("Reading custom CA certificate file: %s", ca_file)
content = self.read_file(ca_file, "federation_custom_ca_list")
# Parse the CA certificates
try:
cert_base = Certificate.loadPEM(content)
certs.append(cert_base)
except Exception as e:
raise ConfigError(
"Error parsing custom CA certificate file %s: %s" % (ca_file, e)
)
self.federation_ca_trust_root = trustRootFromCertificates(certs)
# This config option applies to non-federation HTTP clients
# (e.g. for talking to recaptcha, identity servers, and such)
# It should never be used in production, and is intended for
# use only when running tests.
self.use_insecure_ssl_client_just_for_testing_do_not_use = config.get(
"use_insecure_ssl_client_just_for_testing_do_not_use"
)
self.tls_certificate: Optional[crypto.X509] = None
self.tls_private_key: Optional[crypto.PKey] = None
def __init__(self, name: str, sygnal: "Sygnal", config: Dict[str, Any]):
self.name = name
self.appid_pattern = glob_to_regex(name, ignore_case=False)
self.cfg = config
self.sygnal = sygnal