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Disable account related endpoints when using OAuth delegation

This commit is contained in:
Quentin Gliech 2023-05-10 16:08:43 +02:00 committed by Patrick Cloke
parent 5fe96082d0
commit 31691d6151
8 changed files with 243 additions and 19 deletions
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8
synapse/handlers/auth.py
View File

@ -274,6 +274,8 @@ class AuthHandler:
# response.
self._extra_attributes: Dict[str, SsoLoginExtraAttributes] = {}
self.oauth_delegation_enabled = hs.config.auth.oauth_delegation_enabled
async def validate_user_via_ui_auth(
self,
requester: Requester,
@ -322,8 +324,12 @@ class AuthHandler:
LimitExceededError if the ratelimiter's failed request count for this
user is too high to proceed
"""
if self.oauth_delegation_enabled:
raise SynapseError(
HTTPStatus.INTERNAL_SERVER_ERROR, "UIA shouldn't be used with MSC3861"
)
if not requester.access_token_id:
raise ValueError("Cannot validate a user without an access token")
if can_skip_ui_auth and self._ui_auth_session_timeout:

24
synapse/rest/client/account.py
View File

@ -27,6 +27,7 @@ from synapse.api.constants import LoginType
from synapse.api.errors import (
Codes,
InteractiveAuthIncompleteError,
NotFoundError,
SynapseError,
ThreepidValidationError,
)
@ -600,6 +601,9 @@ class ThreepidRestServlet(RestServlet):
# ThreePidBindRestServelet.PostBody with an `alias_generator` to handle
# `threePidCreds` versus `three_pid_creds`.
async def on_POST(self, request: SynapseRequest) -> Tuple[int, JsonDict]:
if self.hs.config.auth.oauth_delegation_enabled:
raise NotFoundError(errcode=Codes.UNRECOGNIZED)
if not self.hs.config.registration.enable_3pid_changes:
raise SynapseError(
400, "3PID changes are disabled on this server", Codes.FORBIDDEN
@ -890,19 +894,21 @@ class AccountStatusRestServlet(RestServlet):
def register_servlets(hs: "HomeServer", http_server: HttpServer) -> None:
if hs.config.worker.worker_app is None:
EmailPasswordRequestTokenRestServlet(hs).register(http_server)
PasswordRestServlet(hs).register(http_server)
DeactivateAccountRestServlet(hs).register(http_server)
EmailThreepidRequestTokenRestServlet(hs).register(http_server)
MsisdnThreepidRequestTokenRestServlet(hs).register(http_server)
AddThreepidEmailSubmitTokenServlet(hs).register(http_server)
AddThreepidMsisdnSubmitTokenServlet(hs).register(http_server)
if not hs.config.auth.oauth_delegation_enabled:
EmailPasswordRequestTokenRestServlet(hs).register(http_server)
DeactivateAccountRestServlet(hs).register(http_server)
PasswordRestServlet(hs).register(http_server)
EmailThreepidRequestTokenRestServlet(hs).register(http_server)
MsisdnThreepidRequestTokenRestServlet(hs).register(http_server)
AddThreepidEmailSubmitTokenServlet(hs).register(http_server)
AddThreepidMsisdnSubmitTokenServlet(hs).register(http_server)
ThreepidRestServlet(hs).register(http_server)
if hs.config.worker.worker_app is None:
ThreepidAddRestServlet(hs).register(http_server)
ThreepidBindRestServlet(hs).register(http_server)
ThreepidUnbindRestServlet(hs).register(http_server)
ThreepidDeleteRestServlet(hs).register(http_server)
if not hs.config.auth.oauth_delegation_enabled:
ThreepidAddRestServlet(hs).register(http_server)
ThreepidDeleteRestServlet(hs).register(http_server)
WhoamiRestServlet(hs).register(http_server)
if hs.config.worker.worker_app is None and hs.config.experimental.msc3720_enabled:

11
synapse/rest/client/devices.py
View File

@ -19,7 +19,7 @@ from typing import TYPE_CHECKING, List, Optional, Tuple
from pydantic import Extra, StrictStr
from synapse.api import errors
from synapse.api.errors import NotFoundError
from synapse.api.errors import NotFoundError, UnrecognizedRequestError
from synapse.handlers.device import DeviceHandler
from synapse.http.server import HttpServer
from synapse.http.servlet import (
@ -135,6 +135,7 @@ class DeviceRestServlet(RestServlet):
self.device_handler = handler
self.auth_handler = hs.get_auth_handler()
self._msc3852_enabled = hs.config.experimental.msc3852_enabled
self.oauth_delegation_enabled = hs.config.auth.oauth_delegation_enabled
async def on_GET(
self, request: SynapseRequest, device_id: str
@ -166,6 +167,9 @@ class DeviceRestServlet(RestServlet):
async def on_DELETE(
self, request: SynapseRequest, device_id: str
) -> Tuple[int, JsonDict]:
if self.oauth_delegation_enabled:
raise UnrecognizedRequestError(code=404)
requester = await self.auth.get_user_by_req(request)
try:
@ -344,7 +348,10 @@ class ClaimDehydratedDeviceServlet(RestServlet):
def register_servlets(hs: "HomeServer", http_server: HttpServer) -> None:
if hs.config.worker.worker_app is None:
if (
hs.config.worker.worker_app is None
and not hs.config.auth.oauth_delegation_enabled
):
DeleteDevicesRestServlet(hs).register(http_server)
DevicesRestServlet(hs).register(http_server)
if hs.config.worker.worker_app is None:

30
synapse/rest/client/keys.py
View File

@ -17,9 +17,10 @@
import logging
import re
from collections import Counter
from http import HTTPStatus
from typing import TYPE_CHECKING, Any, Dict, Optional, Tuple
from synapse.api.errors import InvalidAPICallError, SynapseError
from synapse.api.errors import Codes, InvalidAPICallError, SynapseError
from synapse.http.server import HttpServer
from synapse.http.servlet import (
RestServlet,
@ -375,9 +376,29 @@ class SigningKeyUploadServlet(RestServlet):
user_id = requester.user.to_string()
body = parse_json_object_from_request(request)
if self.hs.config.experimental.msc3967_enabled:
if await self.e2e_keys_handler.is_cross_signing_set_up_for_user(user_id):
# If we already have a master key then cross signing is set up and we require UIA to reset
is_cross_signing_setup = (
await self.e2e_keys_handler.is_cross_signing_set_up_for_user(user_id)
)
# Before MSC3967 we required UIA both when setting up cross signing for the
# first time and when resetting the device signing key. With MSC3967 we only
# require UIA when resetting cross-signing, and not when setting up the first
# time. Because there is no UIA in MSC3861, for now we throw an error if the
# user tries to reset the device signing key when MSC3861 is enabled, but allow
# first-time setup.
if self.hs.config.auth.oauth_delegation_enabled:
# There is no way to reset the device signing key with MSC3861
if is_cross_signing_setup:
raise SynapseError(
HTTPStatus.NOT_IMPLEMENTED,
"Resetting cross signing keys is not yet supported with MSC3861",
Codes.UNRECOGNIZED,
)
# But first-time setup is fine
elif self.hs.config.experimental.msc3967_enabled:
# If we already have a master key then cross signing is set up and we require UIA to reset
if is_cross_signing_setup:
await self.auth_handler.validate_user_via_ui_auth(
requester,
request,
@ -387,6 +408,7 @@ class SigningKeyUploadServlet(RestServlet):
can_skip_ui_auth=False,
)
# Otherwise we don't require UIA since we are setting up cross signing for first time
else:
# Previous behaviour is to always require UIA but allow it to be skipped
await self.auth_handler.validate_user_via_ui_auth(

3
synapse/rest/client/login.py
View File

@ -633,6 +633,9 @@ class CasTicketServlet(RestServlet):
def register_servlets(hs: "HomeServer", http_server: HttpServer) -> None:
if hs.config.auth.oauth_delegation_enabled:
return
LoginRestServlet(hs).register(http_server)
if (
hs.config.worker.worker_app is None

3
synapse/rest/client/logout.py
View File

@ -80,5 +80,8 @@ class LogoutAllRestServlet(RestServlet):
def register_servlets(hs: "HomeServer", http_server: HttpServer) -> None:
if hs.config.auth.oauth_delegation_enabled:
return
LogoutRestServlet(hs).register(http_server)
LogoutAllRestServlet(hs).register(http_server)

3
synapse/rest/client/register.py
View File

@ -955,6 +955,9 @@ def _calculate_registration_flows(
def register_servlets(hs: "HomeServer", http_server: HttpServer) -> None:
if hs.config.auth.oauth_delegation_enabled:
return
if hs.config.worker.worker_app is None:
EmailRegisterRequestTokenRestServlet(hs).register(http_server)
MsisdnRegisterRequestTokenRestServlet(hs).register(http_server)

180
tests/handlers/test_oauth_delegation.py
View File

@ -11,14 +11,27 @@
# 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 typing import Any, Dict
from http import HTTPStatus
from typing import Any, Dict, Union
from unittest.mock import ANY, Mock
from urllib.parse import parse_qs
from signedjson.key import (
encode_verify_key_base64,
generate_signing_key,
get_verify_key,
)
from signedjson.sign import sign_json
from twisted.test.proto_helpers import MemoryReactor
from synapse.api.errors import InvalidClientTokenError, OAuthInsufficientScopeError
from synapse.rest.client import devices
from synapse.api.errors import (
Codes,
InvalidClientTokenError,
OAuthInsufficientScopeError,
)
from synapse.rest.client import account, devices, keys, login, logout, register
from synapse.server import HomeServer
from synapse.types import JsonDict
from synapse.util import Clock
@ -57,6 +70,7 @@ DEVICE = "AABBCCDD"
MATRIX_DEVICE_SCOPE = "urn:matrix:org.matrix.msc2967.client:device:" + DEVICE
SUBJECT = "abc-def-ghi"
USERNAME = "test-user"
USER_ID = "@" + USERNAME + ":" + SERVER_NAME
async def get_json(url: str) -> JsonDict:
@ -84,7 +98,12 @@ async def get_json(url: str) -> JsonDict:
@skip_unless(HAS_AUTHLIB, "requires authlib")
class MSC3861OAuthDelegation(HomeserverTestCase):
servlets = [
account.register_servlets,
devices.register_servlets,
keys.register_servlets,
register.register_servlets,
login.register_servlets,
logout.register_servlets,
]
def default_config(self) -> Dict[str, Any]:
@ -380,3 +399,158 @@ class MSC3861OAuthDelegation(HomeserverTestCase):
get_awaitable_result(self.auth.is_server_admin(requester)), False
)
self.assertEqual(requester.device_id, DEVICE)
def make_device_keys(self, user_id: str, device_id: str) -> JsonDict:
# We only generate a master key to simplify the test.
master_signing_key = generate_signing_key(device_id)
master_verify_key = encode_verify_key_base64(get_verify_key(master_signing_key))
return {
"master_key": sign_json(
{
"user_id": user_id,
"usage": ["master"],
"keys": {"ed25519:" + master_verify_key: master_verify_key},
},
user_id,
master_signing_key,
),
}
def test_cross_signing(self) -> None:
"""Try uploading device keys with OAuth delegation enabled."""
self.http_client.request = simple_async_mock(
return_value=FakeResponse.json(
code=200,
payload={
"active": True,
"sub": SUBJECT,
"scope": " ".join([MATRIX_USER_SCOPE, MATRIX_DEVICE_SCOPE]),
"username": USERNAME,
},
)
)
keys_upload_body = self.make_device_keys(USER_ID, DEVICE)
channel = self.make_request(
"POST",
"/_matrix/client/v3/keys/device_signing/upload",
keys_upload_body,
access_token="mockAccessToken",
)
self.assertEqual(channel.code, 200, channel.json_body)
channel = self.make_request(
"POST",
"/_matrix/client/v3/keys/device_signing/upload",
keys_upload_body,
access_token="mockAccessToken",
)
self.assertEqual(channel.code, HTTPStatus.NOT_IMPLEMENTED, channel.json_body)
def expect_unauthorized(
self, method: str, path: str, content: Union[bytes, str, JsonDict] = ""
) -> None:
channel = self.make_request(method, path, content, shorthand=False)
self.assertEqual(channel.code, 401, channel.json_body)
def expect_unrecognized(
self, method: str, path: str, content: Union[bytes, str, JsonDict] = ""
) -> None:
channel = self.make_request(method, path, content)
self.assertEqual(channel.code, 404, channel.json_body)
self.assertEqual(
channel.json_body["errcode"], Codes.UNRECOGNIZED, channel.json_body
)
def test_uia_endpoints(self) -> None:
"""Test that endpoints that were removed in MSC2964 are no longer available."""
# This is just an endpoint that should remain visible (but requires auth):
self.expect_unauthorized("GET", "/_matrix/client/v3/devices")
# This remains usable, but will require a uia scope:
self.expect_unauthorized(
"POST", "/_matrix/client/v3/keys/device_signing/upload"
)
def test_3pid_endpoints(self) -> None:
"""Test that 3pid account management endpoints that were removed in MSC2964 are no longer available."""
# Remains and requires auth:
self.expect_unauthorized("GET", "/_matrix/client/v3/account/3pid")
self.expect_unauthorized(
"POST",
"/_matrix/client/v3/account/3pid/bind",
{
"client_secret": "foo",
"id_access_token": "bar",
"id_server": "foo",
"sid": "bar",
},
)
self.expect_unauthorized("POST", "/_matrix/client/v3/account/3pid/unbind", {})
# These are gone:
self.expect_unrecognized(
"POST", "/_matrix/client/v3/account/3pid"
) # deprecated
self.expect_unrecognized("POST", "/_matrix/client/v3/account/3pid/add")
self.expect_unrecognized("POST", "/_matrix/client/v3/account/3pid/delete")
self.expect_unrecognized(
"POST", "/_matrix/client/v3/account/3pid/email/requestToken"
)
self.expect_unrecognized(
"POST", "/_matrix/client/v3/account/3pid/msisdn/requestToken"
)
def test_account_management_endpoints_removed(self) -> None:
"""Test that account management endpoints that were removed in MSC2964 are no longer available."""
self.expect_unrecognized("POST", "/_matrix/client/v3/account/deactivate")
self.expect_unrecognized("POST", "/_matrix/client/v3/account/password")
self.expect_unrecognized(
"POST", "/_matrix/client/v3/account/password/email/requestToken"
)
self.expect_unrecognized(
"POST", "/_matrix/client/v3/account/password/msisdn/requestToken"
)
def test_registration_endpoints_removed(self) -> None:
"""Test that registration endpoints that were removed in MSC2964 are no longer available."""
self.expect_unrecognized(
"GET", "/_matrix/client/v1/register/m.login.registration_token/validity"
)
self.expect_unrecognized("POST", "/_matrix/client/v3/register")
self.expect_unrecognized("GET", "/_matrix/client/v3/register")
self.expect_unrecognized("GET", "/_matrix/client/v3/register/available")
self.expect_unrecognized(
"POST", "/_matrix/client/v3/register/email/requestToken"
)
self.expect_unrecognized(
"POST", "/_matrix/client/v3/register/msisdn/requestToken"
)
def test_session_management_endpoints_removed(self) -> None:
"""Test that session management endpoints that were removed in MSC2964 are no longer available."""
self.expect_unrecognized("GET", "/_matrix/client/v3/login")
self.expect_unrecognized("POST", "/_matrix/client/v3/login")
self.expect_unrecognized("GET", "/_matrix/client/v3/login/sso/redirect")
self.expect_unrecognized("POST", "/_matrix/client/v3/logout")
self.expect_unrecognized("POST", "/_matrix/client/v3/logout/all")
self.expect_unrecognized("POST", "/_matrix/client/v3/refresh")
self.expect_unrecognized("GET", "/_matrix/static/client/login")
def test_device_management_endpoints_removed(self) -> None:
"""Test that device management endpoints that were removed in MSC2964 are no longer available."""
self.expect_unrecognized("POST", "/_matrix/client/v3/delete_devices")
self.expect_unrecognized("DELETE", "/_matrix/client/v3/devices/{DEVICE}")
def test_openid_endpoints_removed(self) -> None:
"""Test that OpenID id_token endpoints that were removed in MSC2964 are no longer available."""
self.expect_unrecognized(
"POST", "/_matrix/client/v3/user/{USERNAME}/openid/request_token"
)