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synapse/tests/rest/client/test_password_policy.py

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# Copyright 2019 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 json
from http import HTTPStatus
from twisted.test.proto_helpers import MemoryReactor
from synapse.api.constants import LoginType
from synapse.api.errors import Codes
from synapse.rest import admin
from synapse.rest.client import account, login, password_policy, register
from synapse.server import HomeServer
from synapse.util import Clock
from tests import unittest
class PasswordPolicyTestCase(unittest.HomeserverTestCase):
"""Tests the password policy feature and its compliance with MSC2000.
When validating a password, Synapse does the necessary checks in this order:
1. Password is long enough
2. Password contains digit(s)
3. Password contains symbol(s)
4. Password contains uppercase letter(s)
5. Password contains lowercase letter(s)
For each test below that checks whether a password triggers the right error code,
that test provides a password good enough to pass the previous tests, but not the
one it is currently testing (nor any test that comes afterward).
"""
servlets = [
admin.register_servlets_for_client_rest_resource,
login.register_servlets,
register.register_servlets,
password_policy.register_servlets,
account.register_servlets,
]
def make_homeserver(self, reactor: MemoryReactor, clock: Clock) -> HomeServer:
self.register_url = "/_matrix/client/r0/register"
self.policy = {
"enabled": True,
"minimum_length": 10,
"require_digit": True,
"require_symbol": True,
"require_lowercase": True,
"require_uppercase": True,
}
config = self.default_config()
config["password_config"] = {
"policy": self.policy,
}
hs = self.setup_test_homeserver(config=config)
return hs
def test_get_policy(self) -> None:
"""Tests if the /password_policy endpoint returns the configured policy."""
channel = self.make_request("GET", "/_matrix/client/r0/password_policy")
self.assertEqual(channel.code, HTTPStatus.OK, channel.result)
self.assertEqual(
channel.json_body,
{
"m.minimum_length": 10,
"m.require_digit": True,
"m.require_symbol": True,
"m.require_lowercase": True,
"m.require_uppercase": True,
},
channel.result,
)
def test_password_too_short(self) -> None:
request_data = json.dumps({"username": "kermit", "password": "shorty"})
channel = self.make_request("POST", self.register_url, request_data)
self.assertEqual(channel.code, HTTPStatus.BAD_REQUEST, channel.result)
self.assertEqual(
channel.json_body["errcode"],
Codes.PASSWORD_TOO_SHORT,
channel.result,
)
def test_password_no_digit(self) -> None:
request_data = json.dumps({"username": "kermit", "password": "longerpassword"})
channel = self.make_request("POST", self.register_url, request_data)
self.assertEqual(channel.code, HTTPStatus.BAD_REQUEST, channel.result)
self.assertEqual(
channel.json_body["errcode"],
Codes.PASSWORD_NO_DIGIT,
channel.result,
)
def test_password_no_symbol(self) -> None:
request_data = json.dumps({"username": "kermit", "password": "l0ngerpassword"})
channel = self.make_request("POST", self.register_url, request_data)
self.assertEqual(channel.code, HTTPStatus.BAD_REQUEST, channel.result)
self.assertEqual(
channel.json_body["errcode"],
Codes.PASSWORD_NO_SYMBOL,
channel.result,
)
def test_password_no_uppercase(self) -> None:
request_data = json.dumps({"username": "kermit", "password": "l0ngerpassword!"})
channel = self.make_request("POST", self.register_url, request_data)
self.assertEqual(channel.code, HTTPStatus.BAD_REQUEST, channel.result)
self.assertEqual(
channel.json_body["errcode"],
Codes.PASSWORD_NO_UPPERCASE,
channel.result,
)
def test_password_no_lowercase(self) -> None:
request_data = json.dumps({"username": "kermit", "password": "L0NGERPASSWORD!"})
channel = self.make_request("POST", self.register_url, request_data)
self.assertEqual(channel.code, HTTPStatus.BAD_REQUEST, channel.result)
self.assertEqual(
channel.json_body["errcode"],
Codes.PASSWORD_NO_LOWERCASE,
channel.result,
)
def test_password_compliant(self) -> None:
request_data = json.dumps({"username": "kermit", "password": "L0ngerpassword!"})
channel = self.make_request("POST", self.register_url, request_data)
# Getting a 401 here means the password has passed validation and the server has
# responded with a list of registration flows.
self.assertEqual(channel.code, HTTPStatus.UNAUTHORIZED, channel.result)
def test_password_change(self) -> None:
"""This doesn't test every possible use case, only that hitting /account/password
triggers the password validation code.
"""
compliant_password = "C0mpl!antpassword"
not_compliant_password = "notcompliantpassword"
user_id = self.register_user("kermit", compliant_password)
tok = self.login("kermit", compliant_password)
request_data = json.dumps(
{
"new_password": not_compliant_password,
"auth": {
"password": compliant_password,
"type": LoginType.PASSWORD,
"user": user_id,
},
}
)
channel = self.make_request(
"POST",
"/_matrix/client/r0/account/password",
request_data,
access_token=tok,
)
self.assertEqual(channel.code, HTTPStatus.BAD_REQUEST, channel.result)
self.assertEqual(channel.json_body["errcode"], Codes.PASSWORD_NO_DIGIT)