diff options
Diffstat (limited to 'synapse/util/stringutils.py')
| -rw-r--r-- | synapse/util/stringutils.py | 33 |
1 files changed, 18 insertions, 15 deletions
diff --git a/synapse/util/stringutils.py b/synapse/util/stringutils.py index f8038bf861..9ce7873ab5 100644 --- a/synapse/util/stringutils.py +++ b/synapse/util/stringutils.py @@ -25,7 +25,7 @@ from synapse.api.errors import Codes, SynapseError _string_with_symbols = string.digits + string.ascii_letters + ".,;:^&*-_+=#~@" # https://matrix.org/docs/spec/client_server/r0.6.0#post-matrix-client-r0-register-email-requesttoken -client_secret_regex = re.compile(r"^[0-9a-zA-Z\.\=\_\-]+$") +CLIENT_SECRET_REGEX = re.compile(r"^[0-9a-zA-Z\.=_\-]+$") # https://matrix.org/docs/spec/client_server/r0.6.1#matrix-content-mxc-uris, # together with https://github.com/matrix-org/matrix-doc/issues/2177 which basically @@ -42,28 +42,31 @@ MXC_REGEX = re.compile("^mxc://([^/]+)/([^/#?]+)$") rand = random.SystemRandom() -def random_string(length): +def random_string(length: int) -> str: return "".join(rand.choice(string.ascii_letters) for _ in range(length)) -def random_string_with_symbols(length): +def random_string_with_symbols(length: int) -> str: return "".join(rand.choice(_string_with_symbols) for _ in range(length)) -def is_ascii(s): - if isinstance(s, bytes): - try: - s.decode("ascii").encode("ascii") - except UnicodeDecodeError: - return False - except UnicodeEncodeError: - return False - return True +def is_ascii(s: bytes) -> bool: + try: + s.decode("ascii").encode("ascii") + except UnicodeDecodeError: + return False + except UnicodeEncodeError: + return False + return True -def assert_valid_client_secret(client_secret): - """Validate that a given string matches the client_secret regex defined by the spec""" - if client_secret_regex.match(client_secret) is None: +def assert_valid_client_secret(client_secret: str) -> None: + """Validate that a given string matches the client_secret defined by the spec""" + if ( + len(client_secret) <= 0 + or len(client_secret) > 255 + or CLIENT_SECRET_REGEX.match(client_secret) is None + ): raise SynapseError( 400, "Invalid client_secret parameter", errcode=Codes.INVALID_PARAM ) |