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Merge pull request #2813 from matrix-org/matthew/registrations_require_3pid

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add registrations_require_3pid and allow_local_3pids
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Matthew Hodgson 2018-01-22 13:57:22 +00:00 committed by GitHub
commit d84f65255e
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8 changed files with 178 additions and 23 deletions
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1
synapse/api/errors.py
View file

@ -46,6 +46,7 @@ class Codes(object):
THREEPID_AUTH_FAILED = "M_THREEPID_AUTH_FAILED"
THREEPID_IN_USE = "M_THREEPID_IN_USE"
THREEPID_NOT_FOUND = "M_THREEPID_NOT_FOUND"
THREEPID_DENIED = "M_THREEPID_DENIED"
INVALID_USERNAME = "M_INVALID_USERNAME"
SERVER_NOT_TRUSTED = "M_SERVER_NOT_TRUSTED"

19
synapse/config/registration.py
View file

@ -31,6 +31,8 @@ class RegistrationConfig(Config):
strtobool(str(config["disable_registration"]))
)
self.registrations_require_3pid = config.get("registrations_require_3pid", [])
self.allowed_local_3pids = config.get("allowed_local_3pids", [])
self.registration_shared_secret = config.get("registration_shared_secret")
self.bcrypt_rounds = config.get("bcrypt_rounds", 12)
@ -52,6 +54,23 @@ class RegistrationConfig(Config):
# Enable registration for new users.
enable_registration: False
# The user must provide all of the below types of 3PID when registering.
#
# registrations_require_3pid:
# - email
# - msisdn
# Mandate that users are only allowed to associate certain formats of
# 3PIDs with accounts on this server.
#
# allowed_local_3pids:
# - medium: email
# pattern: ".*@matrix\\.org"
# - medium: email
# pattern: ".*@vector\\.im"
# - medium: msisdn
# pattern: "\\+44"
# If set, allows registration by anyone who also has the shared
# secret, even if registration is otherwise disabled.
registration_shared_secret: "%(registration_shared_secret)s"

8
synapse/handlers/register.py
View file

@ -25,6 +25,7 @@ from synapse.http.client import CaptchaServerHttpClient
from synapse import types
from synapse.types import UserID
from synapse.util.async import run_on_reactor
from synapse.util.threepids import check_3pid_allowed
from ._base import BaseHandler
logger = logging.getLogger(__name__)
@ -293,7 +294,7 @@ class RegistrationHandler(BaseHandler):
"""
for c in threepidCreds:
logger.info("validating theeepidcred sid %s on id server %s",
logger.info("validating threepidcred sid %s on id server %s",
c['sid'], c['idServer'])
try:
identity_handler = self.hs.get_handlers().identity_handler
@ -307,6 +308,11 @@ class RegistrationHandler(BaseHandler):
logger.info("got threepid with medium '%s' and address '%s'",
threepid['medium'], threepid['address'])
if not check_3pid_allowed(self.hs, threepid['medium'], threepid['address']):
raise RegistrationError(
403, "Third party identifier is not allowed"
)
@defer.inlineCallbacks
def bind_emails(self, user_id, threepidCreds):
"""Links emails with a user ID and informs an identity server.

34
synapse/rest/client/v1/register.py
View file

@ -70,10 +70,15 @@ class RegisterRestServlet(ClientV1RestServlet):
self.handlers = hs.get_handlers()
def on_GET(self, request):
require_email = 'email' in self.hs.config.registrations_require_3pid
require_msisdn = 'msisdn' in self.hs.config.registrations_require_3pid
flows = []
if self.hs.config.enable_registration_captcha:
return (
200,
{"flows": [
# only support the email-only flow if we don't require MSISDN 3PIDs
if not require_msisdn:
flows.extend([
{
"type": LoginType.RECAPTCHA,
"stages": [
@ -82,27 +87,34 @@ class RegisterRestServlet(ClientV1RestServlet):
LoginType.PASSWORD
]
},
])
# only support 3PIDless registration if no 3PIDs are required
if not require_email and not require_msisdn:
flows.extend([
{
"type": LoginType.RECAPTCHA,
"stages": [LoginType.RECAPTCHA, LoginType.PASSWORD]
}
]}
)
])
else:
return (
200,
{"flows": [
# only support the email-only flow if we don't require MSISDN 3PIDs
if require_email or not require_msisdn:
flows.extend([
{
"type": LoginType.EMAIL_IDENTITY,
"stages": [
LoginType.EMAIL_IDENTITY, LoginType.PASSWORD
]
},
}
])
# only support 3PIDless registration if no 3PIDs are required
if not require_email and not require_msisdn:
flows.extend([
{
"type": LoginType.PASSWORD
}
]}
)
])
return (200, {"flows": flows})
@defer.inlineCallbacks
def on_POST(self, request):

21
synapse/rest/client/v2_alpha/account.py
View file

@ -26,6 +26,7 @@ from synapse.http.servlet import (
)
from synapse.util.async import run_on_reactor
from synapse.util.msisdn import phone_number_to_msisdn
from synapse.util.threepids import check_3pid_allowed
from ._base import client_v2_patterns, interactive_auth_handler
logger = logging.getLogger(__name__)
@ -47,6 +48,11 @@ class EmailPasswordRequestTokenRestServlet(RestServlet):
'id_server', 'client_secret', 'email', 'send_attempt'
])
if not check_3pid_allowed(self.hs, "email", body['email']):
raise SynapseError(
403, "Third party identifier is not allowed", Codes.THREEPID_DENIED,
)
existingUid = yield self.hs.get_datastore().get_user_id_by_threepid(
'email', body['email']
)
@ -78,6 +84,11 @@ class MsisdnPasswordRequestTokenRestServlet(RestServlet):
msisdn = phone_number_to_msisdn(body['country'], body['phone_number'])
if not check_3pid_allowed(self.hs, "msisdn", msisdn):
raise SynapseError(
403, "Third party identifier is not allowed", Codes.THREEPID_DENIED,
)
existingUid = yield self.datastore.get_user_id_by_threepid(
'msisdn', msisdn
)
@ -217,6 +228,11 @@ class EmailThreepidRequestTokenRestServlet(RestServlet):
if absent:
raise SynapseError(400, "Missing params: %r" % absent, Codes.MISSING_PARAM)
if not check_3pid_allowed(self.hs, "email", body['email']):
raise SynapseError(
403, "Third party identifier is not allowed", Codes.THREEPID_DENIED,
)
existingUid = yield self.datastore.get_user_id_by_threepid(
'email', body['email']
)
@ -255,6 +271,11 @@ class MsisdnThreepidRequestTokenRestServlet(RestServlet):
msisdn = phone_number_to_msisdn(body['country'], body['phone_number'])
if not check_3pid_allowed(self.hs, "msisdn", msisdn):
raise SynapseError(
403, "Third party identifier is not allowed", Codes.THREEPID_DENIED,
)
existingUid = yield self.datastore.get_user_id_by_threepid(
'msisdn', msisdn
)

69
synapse/rest/client/v2_alpha/register.py
View file

@ -26,6 +26,7 @@ from synapse.http.servlet import (
RestServlet, parse_json_object_from_request, assert_params_in_request, parse_string
)
from synapse.util.msisdn import phone_number_to_msisdn
from synapse.util.threepids import check_3pid_allowed
from ._base import client_v2_patterns, interactive_auth_handler
@ -70,6 +71,11 @@ class EmailRegisterRequestTokenRestServlet(RestServlet):
'id_server', 'client_secret', 'email', 'send_attempt'
])
if not check_3pid_allowed(self.hs, "email", body['email']):
raise SynapseError(
403, "Third party identifier is not allowed", Codes.THREEPID_DENIED,
)
existingUid = yield self.hs.get_datastore().get_user_id_by_threepid(
'email', body['email']
)
@ -105,6 +111,11 @@ class MsisdnRegisterRequestTokenRestServlet(RestServlet):
msisdn = phone_number_to_msisdn(body['country'], body['phone_number'])
if not check_3pid_allowed(self.hs, "msisdn", msisdn):
raise SynapseError(
403, "Third party identifier is not allowed", Codes.THREEPID_DENIED,
)
existingUid = yield self.hs.get_datastore().get_user_id_by_threepid(
'msisdn', msisdn
)
@ -305,31 +316,67 @@ class RegisterRestServlet(RestServlet):
if 'x_show_msisdn' in body and body['x_show_msisdn']:
show_msisdn = True
# FIXME: need a better error than "no auth flow found" for scenarios
# where we required 3PID for registration but the user didn't give one
require_email = 'email' in self.hs.config.registrations_require_3pid
require_msisdn = 'msisdn' in self.hs.config.registrations_require_3pid
flows = []
if self.hs.config.enable_registration_captcha:
flows = [
[LoginType.RECAPTCHA],
[LoginType.EMAIL_IDENTITY, LoginType.RECAPTCHA],
]
# only support 3PIDless registration if no 3PIDs are required
if not require_email and not require_msisdn:
flows.extend([[LoginType.RECAPTCHA]])
# only support the email-only flow if we don't require MSISDN 3PIDs
if not require_msisdn:
flows.extend([[LoginType.EMAIL_IDENTITY, LoginType.RECAPTCHA]])
if show_msisdn:
# only support the MSISDN-only flow if we don't require email 3PIDs
if not require_email:
flows.extend([[LoginType.MSISDN, LoginType.RECAPTCHA]])
# always let users provide both MSISDN & email
flows.extend([
[LoginType.MSISDN, LoginType.RECAPTCHA],
[LoginType.MSISDN, LoginType.EMAIL_IDENTITY, LoginType.RECAPTCHA],
])
else:
flows = [
[LoginType.DUMMY],
[LoginType.EMAIL_IDENTITY],
]
# only support 3PIDless registration if no 3PIDs are required
if not require_email and not require_msisdn:
flows.extend([[LoginType.DUMMY]])
# only support the email-only flow if we don't require MSISDN 3PIDs
if not require_msisdn:
flows.extend([[LoginType.EMAIL_IDENTITY]])
if show_msisdn:
# only support the MSISDN-only flow if we don't require email 3PIDs
if not require_email or require_msisdn:
flows.extend([[LoginType.MSISDN]])
# always let users provide both MSISDN & email
flows.extend([
[LoginType.MSISDN],
[LoginType.MSISDN, LoginType.EMAIL_IDENTITY],
[LoginType.MSISDN, LoginType.EMAIL_IDENTITY]
])
auth_result, params, session_id = yield self.auth_handler.check_auth(
flows, body, self.hs.get_ip_from_request(request)
)
# Check that we're not trying to register a denied 3pid.
#
# the user-facing checks will probably already have happened in
# /register/email/requestToken when we requested a 3pid, but that's not
# guaranteed.
if auth_result:
for login_type in [LoginType.EMAIL_IDENTITY, LoginType.MSISDN]:
if login_type in auth_result:
medium = auth_result[login_type].threepid['medium']
address = auth_result[login_type].threepid['address']
if not check_3pid_allowed(self.hs, medium, address):
raise SynapseError(
403, "Third party identifier is not allowed",
Codes.THREEPID_DENIED,
)
if registered_user_id is not None:
logger.info(
"Already registered user ID %r for this session",

48
synapse/util/threepids.py Normal file
View file

@ -0,0 +1,48 @@
# -*- coding: utf-8 -*-
# Copyright 2018 New Vector Ltd
#
# 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 logging
import re
logger = logging.getLogger(__name__)
def check_3pid_allowed(hs, medium, address):
"""Checks whether a given format of 3PID is allowed to be used on this HS
Args:
hs (synapse.server.HomeServer): server
medium (str): 3pid medium - e.g. email, msisdn
address (str): address within that medium (e.g. "wotan@matrix.org")
msisdns need to first have been canonicalised
Returns:
bool: whether the 3PID medium/address is allowed to be added to this HS
"""
if hs.config.allowed_local_3pids:
for constraint in hs.config.allowed_local_3pids:
logger.debug(
"Checking 3PID %s (%s) against %s (%s)",
address, medium, constraint['pattern'], constraint['medium'],
)
if (
medium == constraint['medium'] and
re.match(constraint['pattern'], address)
):
return True
else:
return True
return False

1
tests/rest/client/v2_alpha/test_register.py
View file

@ -49,6 +49,7 @@ class RegisterRestServletTestCase(unittest.TestCase):
self.hs.get_auth_handler = Mock(return_value=self.auth_handler)
self.hs.get_device_handler = Mock(return_value=self.device_handler)
self.hs.config.enable_registration = True
self.hs.config.registrations_require_3pid = []
self.hs.config.auto_join_rooms = []
# init the thing we're testing