mirror of
https://git.anonymousland.org/anonymousland/synapse-product.git
synced 2024-10-01 08:25:44 -04:00
9ffac2bef1
`distutils` is pretty much deprecated these days, and replaced with `setuptools`. It's also annoying because it's you can't `pip install` it, and it's hard to figure out which debian package we should depend on to make sure it's there. Since we only use it for a tiny function anyway, let's just vendor said function into our codebase.
97 lines
3.2 KiB
Python
97 lines
3.2 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2014-2016 OpenMarket Ltd
|
|
# Copyright 2020 The Matrix.org Foundation C.I.C.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
import itertools
|
|
import random
|
|
import re
|
|
import string
|
|
from collections.abc import Iterable
|
|
|
|
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\.\=\_\-]+$")
|
|
|
|
# random_string and random_string_with_symbols are used for a range of things,
|
|
# some cryptographically important, some less so. We use SystemRandom to make sure
|
|
# we get cryptographically-secure randoms.
|
|
rand = random.SystemRandom()
|
|
|
|
|
|
def random_string(length):
|
|
return "".join(rand.choice(string.ascii_letters) for _ in range(length))
|
|
|
|
|
|
def random_string_with_symbols(length):
|
|
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 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:
|
|
raise SynapseError(
|
|
400, "Invalid client_secret parameter", errcode=Codes.INVALID_PARAM
|
|
)
|
|
|
|
|
|
def shortstr(iterable: Iterable, maxitems: int = 5) -> str:
|
|
"""If iterable has maxitems or fewer, return the stringification of a list
|
|
containing those items.
|
|
|
|
Otherwise, return the stringification of a a list with the first maxitems items,
|
|
followed by "...".
|
|
|
|
Args:
|
|
iterable: iterable to truncate
|
|
maxitems: number of items to return before truncating
|
|
"""
|
|
|
|
items = list(itertools.islice(iterable, maxitems + 1))
|
|
if len(items) <= maxitems:
|
|
return str(items)
|
|
return "[" + ", ".join(repr(r) for r in items[:maxitems]) + ", ...]"
|
|
|
|
|
|
def strtobool(val: str) -> bool:
|
|
"""Convert a string representation of truth to True or False
|
|
|
|
True values are 'y', 'yes', 't', 'true', 'on', and '1'; false values
|
|
are 'n', 'no', 'f', 'false', 'off', and '0'. Raises ValueError if
|
|
'val' is anything else.
|
|
|
|
This is lifted from distutils.util.strtobool, with the exception that it actually
|
|
returns a bool, rather than an int.
|
|
"""
|
|
val = val.lower()
|
|
if val in ("y", "yes", "t", "true", "on", "1"):
|
|
return True
|
|
elif val in ("n", "no", "f", "false", "off", "0"):
|
|
return False
|
|
else:
|
|
raise ValueError("invalid truth value %r" % (val,))
|