356 lines
14 KiB
Python
356 lines
14 KiB
Python
# -*- coding: utf-8 -*-
|
|
# Copyright 2015 - 2016 OpenMarket 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.
|
|
|
|
from twisted.internet import defer
|
|
|
|
from synapse.api.constants import LoginType
|
|
from synapse.api.errors import SynapseError, Codes, UnrecognizedRequestError
|
|
from synapse.http.servlet import RestServlet, parse_json_object_from_request
|
|
|
|
from ._base import client_v2_patterns
|
|
|
|
import logging
|
|
import hmac
|
|
from hashlib import sha1
|
|
from synapse.util.async import run_on_reactor
|
|
|
|
|
|
# We ought to be using hmac.compare_digest() but on older pythons it doesn't
|
|
# exist. It's a _really minor_ security flaw to use plain string comparison
|
|
# because the timing attack is so obscured by all the other code here it's
|
|
# unlikely to make much difference
|
|
if hasattr(hmac, "compare_digest"):
|
|
compare_digest = hmac.compare_digest
|
|
else:
|
|
def compare_digest(a, b):
|
|
return a == b
|
|
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class RegisterRequestTokenRestServlet(RestServlet):
|
|
PATTERNS = client_v2_patterns("/register/email/requestToken$")
|
|
|
|
def __init__(self, hs):
|
|
super(RegisterRequestTokenRestServlet, self).__init__()
|
|
self.hs = hs
|
|
self.identity_handler = hs.get_handlers().identity_handler
|
|
|
|
@defer.inlineCallbacks
|
|
def on_POST(self, request):
|
|
body = parse_json_object_from_request(request)
|
|
|
|
required = ['id_server', 'client_secret', 'email', 'send_attempt']
|
|
absent = []
|
|
for k in required:
|
|
if k not in body:
|
|
absent.append(k)
|
|
|
|
if len(absent) > 0:
|
|
raise SynapseError(400, "Missing params: %r" % absent, Codes.MISSING_PARAM)
|
|
|
|
existingUid = yield self.hs.get_datastore().get_user_id_by_threepid(
|
|
'email', body['email']
|
|
)
|
|
|
|
if existingUid is not None:
|
|
raise SynapseError(400, "Email is already in use", Codes.THREEPID_IN_USE)
|
|
|
|
ret = yield self.identity_handler.requestEmailToken(**body)
|
|
defer.returnValue((200, ret))
|
|
|
|
|
|
class RegisterRestServlet(RestServlet):
|
|
PATTERNS = client_v2_patterns("/register$")
|
|
|
|
def __init__(self, hs):
|
|
super(RegisterRestServlet, self).__init__()
|
|
self.hs = hs
|
|
self.auth = hs.get_auth()
|
|
self.store = hs.get_datastore()
|
|
self.auth_handler = hs.get_auth_handler()
|
|
self.registration_handler = hs.get_handlers().registration_handler
|
|
self.identity_handler = hs.get_handlers().identity_handler
|
|
|
|
@defer.inlineCallbacks
|
|
def on_POST(self, request):
|
|
yield run_on_reactor()
|
|
|
|
kind = "user"
|
|
if "kind" in request.args:
|
|
kind = request.args["kind"][0]
|
|
|
|
if kind == "guest":
|
|
ret = yield self._do_guest_registration()
|
|
defer.returnValue(ret)
|
|
return
|
|
elif kind != "user":
|
|
raise UnrecognizedRequestError(
|
|
"Do not understand membership kind: %s" % (kind,)
|
|
)
|
|
|
|
body = parse_json_object_from_request(request)
|
|
|
|
# we do basic sanity checks here because the auth layer will store these
|
|
# in sessions. Pull out the username/password provided to us.
|
|
desired_password = None
|
|
if 'password' in body:
|
|
if (not isinstance(body['password'], basestring) or
|
|
len(body['password']) > 512):
|
|
raise SynapseError(400, "Invalid password")
|
|
desired_password = body["password"]
|
|
|
|
desired_username = None
|
|
if 'username' in body:
|
|
if (not isinstance(body['username'], basestring) or
|
|
len(body['username']) > 512):
|
|
raise SynapseError(400, "Invalid username")
|
|
desired_username = body['username']
|
|
|
|
appservice = None
|
|
if 'access_token' in request.args:
|
|
appservice = yield self.auth.get_appservice_by_req(request)
|
|
|
|
# fork off as soon as possible for ASes and shared secret auth which
|
|
# have completely different registration flows to normal users
|
|
|
|
# == Application Service Registration ==
|
|
if appservice:
|
|
# Set the desired user according to the AS API (which uses the
|
|
# 'user' key not 'username'). Since this is a new addition, we'll
|
|
# fallback to 'username' if they gave one.
|
|
desired_username = body.get("user", desired_username)
|
|
|
|
if isinstance(desired_username, basestring):
|
|
result = yield self._do_appservice_registration(
|
|
desired_username, request.args["access_token"][0]
|
|
)
|
|
defer.returnValue((200, result)) # we throw for non 200 responses
|
|
return
|
|
|
|
# == Shared Secret Registration == (e.g. create new user scripts)
|
|
if 'mac' in body:
|
|
# FIXME: Should we really be determining if this is shared secret
|
|
# auth based purely on the 'mac' key?
|
|
result = yield self._do_shared_secret_registration(
|
|
desired_username, desired_password, body["mac"]
|
|
)
|
|
defer.returnValue((200, result)) # we throw for non 200 responses
|
|
return
|
|
|
|
# == Normal User Registration == (everyone else)
|
|
if not self.hs.config.enable_registration:
|
|
raise SynapseError(403, "Registration has been disabled")
|
|
|
|
guest_access_token = body.get("guest_access_token", None)
|
|
|
|
session_id = self.auth_handler.get_session_id(body)
|
|
registered_user_id = None
|
|
if session_id:
|
|
# if we get a registered user id out of here, it means we previously
|
|
# registered a user for this session, so we could just return the
|
|
# user here. We carry on and go through the auth checks though,
|
|
# for paranoia.
|
|
registered_user_id = self.auth_handler.get_session_data(
|
|
session_id, "registered_user_id", None
|
|
)
|
|
|
|
if desired_username is not None:
|
|
yield self.registration_handler.check_username(
|
|
desired_username,
|
|
guest_access_token=guest_access_token,
|
|
assigned_user_id=registered_user_id,
|
|
)
|
|
|
|
if self.hs.config.enable_registration_captcha:
|
|
flows = [
|
|
[LoginType.RECAPTCHA],
|
|
[LoginType.EMAIL_IDENTITY, LoginType.RECAPTCHA]
|
|
]
|
|
else:
|
|
flows = [
|
|
[LoginType.DUMMY],
|
|
[LoginType.EMAIL_IDENTITY]
|
|
]
|
|
|
|
authed, result, params, session_id = yield self.auth_handler.check_auth(
|
|
flows, body, self.hs.get_ip_from_request(request)
|
|
)
|
|
|
|
if not authed:
|
|
defer.returnValue((401, result))
|
|
return
|
|
|
|
if registered_user_id is not None:
|
|
logger.info(
|
|
"Already registered user ID %r for this session",
|
|
registered_user_id
|
|
)
|
|
access_token = yield self.auth_handler.issue_access_token(registered_user_id)
|
|
refresh_token = yield self.auth_handler.issue_refresh_token(
|
|
registered_user_id
|
|
)
|
|
defer.returnValue((200, {
|
|
"user_id": registered_user_id,
|
|
"access_token": access_token,
|
|
"home_server": self.hs.hostname,
|
|
"refresh_token": refresh_token,
|
|
}))
|
|
|
|
# NB: This may be from the auth handler and NOT from the POST
|
|
if 'password' not in params:
|
|
raise SynapseError(400, "Missing password.", Codes.MISSING_PARAM)
|
|
|
|
desired_username = params.get("username", None)
|
|
new_password = params.get("password", None)
|
|
guest_access_token = params.get("guest_access_token", None)
|
|
|
|
(user_id, token) = yield self.registration_handler.register(
|
|
localpart=desired_username,
|
|
password=new_password,
|
|
guest_access_token=guest_access_token,
|
|
)
|
|
|
|
# remember that we've now registered that user account, and with what
|
|
# user ID (since the user may not have specified)
|
|
self.auth_handler.set_session_data(
|
|
session_id, "registered_user_id", user_id
|
|
)
|
|
|
|
if result and LoginType.EMAIL_IDENTITY in result:
|
|
threepid = result[LoginType.EMAIL_IDENTITY]
|
|
|
|
for reqd in ['medium', 'address', 'validated_at']:
|
|
if reqd not in threepid:
|
|
logger.info("Can't add incomplete 3pid")
|
|
else:
|
|
yield self.auth_handler.add_threepid(
|
|
user_id,
|
|
threepid['medium'],
|
|
threepid['address'],
|
|
threepid['validated_at'],
|
|
)
|
|
|
|
# And we add an email pusher for them by default, but only
|
|
# if email notifications are enabled (so people don't start
|
|
# getting mail spam where they weren't before if email
|
|
# notifs are set up on a home server)
|
|
if (
|
|
self.hs.config.email_enable_notifs and
|
|
self.hs.config.email_notif_for_new_users
|
|
):
|
|
# Pull the ID of the access token back out of the db
|
|
# It would really make more sense for this to be passed
|
|
# up when the access token is saved, but that's quite an
|
|
# invasive change I'd rather do separately.
|
|
user_tuple = yield self.store.get_user_by_access_token(
|
|
token
|
|
)
|
|
|
|
yield self.hs.get_pusherpool().add_pusher(
|
|
user_id=user_id,
|
|
access_token=user_tuple["token_id"],
|
|
kind="email",
|
|
app_id="m.email",
|
|
app_display_name="Email Notifications",
|
|
device_display_name=threepid["address"],
|
|
pushkey=threepid["address"],
|
|
lang=None, # We don't know a user's language here
|
|
data={},
|
|
)
|
|
|
|
if 'bind_email' in params and params['bind_email']:
|
|
logger.info("bind_email specified: binding")
|
|
|
|
emailThreepid = result[LoginType.EMAIL_IDENTITY]
|
|
threepid_creds = emailThreepid['threepid_creds']
|
|
logger.debug("Binding emails %s to %s" % (
|
|
emailThreepid, user_id
|
|
))
|
|
yield self.identity_handler.bind_threepid(threepid_creds, user_id)
|
|
else:
|
|
logger.info("bind_email not specified: not binding email")
|
|
|
|
result = yield self._create_registration_details(user_id, token)
|
|
defer.returnValue((200, result))
|
|
|
|
def on_OPTIONS(self, _):
|
|
return 200, {}
|
|
|
|
@defer.inlineCallbacks
|
|
def _do_appservice_registration(self, username, as_token):
|
|
(user_id, token) = yield self.registration_handler.appservice_register(
|
|
username, as_token
|
|
)
|
|
defer.returnValue((yield self._create_registration_details(user_id, token)))
|
|
|
|
@defer.inlineCallbacks
|
|
def _do_shared_secret_registration(self, username, password, mac):
|
|
if not self.hs.config.registration_shared_secret:
|
|
raise SynapseError(400, "Shared secret registration is not enabled")
|
|
|
|
user = username.encode("utf-8")
|
|
|
|
# str() because otherwise hmac complains that 'unicode' does not
|
|
# have the buffer interface
|
|
got_mac = str(mac)
|
|
|
|
want_mac = hmac.new(
|
|
key=self.hs.config.registration_shared_secret,
|
|
msg=user,
|
|
digestmod=sha1,
|
|
).hexdigest()
|
|
|
|
if not compare_digest(want_mac, got_mac):
|
|
raise SynapseError(
|
|
403, "HMAC incorrect",
|
|
)
|
|
|
|
(user_id, token) = yield self.registration_handler.register(
|
|
localpart=username, password=password
|
|
)
|
|
defer.returnValue((yield self._create_registration_details(user_id, token)))
|
|
|
|
@defer.inlineCallbacks
|
|
def _create_registration_details(self, user_id, token):
|
|
refresh_token = yield self.auth_handler.issue_refresh_token(user_id)
|
|
defer.returnValue({
|
|
"user_id": user_id,
|
|
"access_token": token,
|
|
"home_server": self.hs.hostname,
|
|
"refresh_token": refresh_token,
|
|
})
|
|
|
|
@defer.inlineCallbacks
|
|
def _do_guest_registration(self):
|
|
if not self.hs.config.allow_guest_access:
|
|
defer.returnValue((403, "Guest access is disabled"))
|
|
user_id, _ = yield self.registration_handler.register(
|
|
generate_token=False,
|
|
make_guest=True
|
|
)
|
|
access_token = self.auth_handler.generate_access_token(user_id, ["guest = true"])
|
|
defer.returnValue((200, {
|
|
"user_id": user_id,
|
|
"access_token": access_token,
|
|
"home_server": self.hs.hostname,
|
|
}))
|
|
|
|
|
|
def register_servlets(hs, http_server):
|
|
RegisterRequestTokenRestServlet(hs).register(http_server)
|
|
RegisterRestServlet(hs).register(http_server)
|