class Auth(object):
"""
FIXME: This class contains a mix of functions for authenticating users
of our client-server API and authenticating events added to room graphs.
"""
def __init__(self, hs):
self.hs = hs
self.clock = hs.get_clock()
self.store = hs.get_datastore()
self.state = hs.get_state_handler()
self.token_cache = LruCache(10000)
register_cache("cache", "token_cache", self.token_cache)
self._auth_blocking = AuthBlocking(self.hs)
self._account_validity = hs.config.account_validity
self._track_appservice_user_ips = hs.config.track_appservice_user_ips
self._macaroon_secret_key = hs.config.macaroon_secret_key
@defer.inlineCallbacks
def check_from_context(self,
room_version: str,
event,
context,
do_sig_check=True):
prev_state_ids = yield context.get_prev_state_ids()
auth_events_ids = yield self.compute_auth_events(event,
prev_state_ids,
for_verification=True)
auth_events = yield self.store.get_events(auth_events_ids)
auth_events = {(e.type, e.state_key): e for e in auth_events.values()}
room_version_obj = KNOWN_ROOM_VERSIONS[room_version]
event_auth.check(room_version_obj,
event,
auth_events=auth_events,
do_sig_check=do_sig_check)
@defer.inlineCallbacks
def check_user_in_room(
self,
room_id: str,
user_id: str,
current_state: Optional[StateMap[EventBase]] = None,
allow_departed_users: bool = False,
):
"""Check if the user is in the room, or was at some point.
Args:
room_id: The room to check.
user_id: The user to check.
current_state: Optional map of the current state of the room.
If provided then that map is used to check whether they are a
member of the room. Otherwise the current membership is
loaded from the database.
allow_departed_users: if True, accept users that were previously
members but have now departed.
Raises:
AuthError if the user is/was not in the room.
Returns:
Deferred[Optional[EventBase]]:
Membership event for the user if the user was in the
room. This will be the join event if they are currently joined to
the room. This will be the leave event if they have left the room.
"""
if current_state:
member = current_state.get((EventTypes.Member, user_id), None)
else:
member = yield self.state.get_current_state(
room_id=room_id,
event_type=EventTypes.Member,
state_key=user_id)
membership = member.membership if member else None
if membership == Membership.JOIN:
return member
# XXX this looks totally bogus. Why do we not allow users who have been banned,
# or those who were members previously and have been re-invited?
if allow_departed_users and membership == Membership.LEAVE:
forgot = yield self.store.did_forget(user_id, room_id)
if not forgot:
return member
raise AuthError(403, "User %s not in room %s" % (user_id, room_id))
@defer.inlineCallbacks
def check_host_in_room(self, room_id, host):
with Measure(self.clock, "check_host_in_room"):
latest_event_ids = yield self.store.is_host_joined(room_id, host)
return latest_event_ids
def can_federate(self, event, auth_events):
creation_event = auth_events.get((EventTypes.Create, ""))
return creation_event.content.get("m.federate", True) is True
def get_public_keys(self, invite_event):
return event_auth.get_public_keys(invite_event)
@defer.inlineCallbacks
def get_user_by_req(
self,
request: Request,
allow_guest: bool = False,
rights: str = "access",
allow_expired: bool = False,
):
""" Get a registered user's ID.
Args:
request: An HTTP request with an access_token query parameter.
allow_guest: If False, will raise an AuthError if the user making the
request is a guest.
rights: The operation being performed; the access token must allow this
allow_expired: If True, allow the request through even if the account
is expired, or session token lifetime has ended. Note that
/login will deliver access tokens regardless of expiration.
Returns:
defer.Deferred: resolves to a `synapse.types.Requester` object
Raises:
InvalidClientCredentialsError if no user by that token exists or the token
is invalid.
AuthError if access is denied for the user in the access token
"""
try:
ip_addr = self.hs.get_ip_from_request(request)
user_agent = request.requestHeaders.getRawHeaders(
b"User-Agent",
default=[b""])[0].decode("ascii", "surrogateescape")
access_token = self.get_access_token_from_request(request)
user_id, app_service = yield self._get_appservice_user_id(request)
if user_id:
request.authenticated_entity = user_id
opentracing.set_tag("authenticated_entity", user_id)
opentracing.set_tag("appservice_id", app_service.id)
if ip_addr and self._track_appservice_user_ips:
yield self.store.insert_client_ip(
user_id=user_id,
access_token=access_token,
ip=ip_addr,
user_agent=user_agent,
device_id="dummy-device", # stubbed
)
return synapse.types.create_requester(user_id,
app_service=app_service)
user_info = yield self.get_user_by_access_token(
access_token, rights, allow_expired=allow_expired)
user = user_info["user"]
token_id = user_info["token_id"]
is_guest = user_info["is_guest"]
# Deny the request if the user account has expired.
if self._account_validity.enabled and not allow_expired:
user_id = user.to_string()
expiration_ts = yield self.store.get_expiration_ts_for_user(
user_id)
if (expiration_ts is not None
and self.clock.time_msec() >= expiration_ts):
raise AuthError(403,
"User account has expired",
errcode=Codes.EXPIRED_ACCOUNT)
# device_id may not be present if get_user_by_access_token has been
# stubbed out.
device_id = user_info.get("device_id")
if user and access_token and ip_addr:
yield self.store.insert_client_ip(
user_id=user.to_string(),
access_token=access_token,
ip=ip_addr,
user_agent=user_agent,
device_id=device_id,
)
if is_guest and not allow_guest:
raise AuthError(
403,
"Guest access not allowed",
errcode=Codes.GUEST_ACCESS_FORBIDDEN,
)
request.authenticated_entity = user.to_string()
opentracing.set_tag("authenticated_entity", user.to_string())
if device_id:
opentracing.set_tag("device_id", device_id)
return synapse.types.create_requester(user,
token_id,
is_guest,
device_id,
app_service=app_service)
except KeyError:
raise MissingClientTokenError()
@defer.inlineCallbacks
def _get_appservice_user_id(self, request):
app_service = self.store.get_app_service_by_token(
self.get_access_token_from_request(request))
if app_service is None:
return None, None
if app_service.ip_range_whitelist:
ip_address = IPAddress(self.hs.get_ip_from_request(request))
if ip_address not in app_service.ip_range_whitelist:
return None, None
if b"user_id" not in request.args:
return app_service.sender, app_service
user_id = request.args[b"user_id"][0].decode("utf8")
if app_service.sender == user_id:
return app_service.sender, app_service
if not app_service.is_interested_in_user(user_id):
raise AuthError(
403, "Application service cannot masquerade as this user.")
if not (yield self.store.get_user_by_id(user_id)):
raise AuthError(
403, "Application service has not registered this user")
return user_id, app_service
@defer.inlineCallbacks
def get_user_by_access_token(
self,
token: str,
rights: str = "access",
allow_expired: bool = False,
):
""" Validate access token and get user_id from it
Args:
token: The access token to get the user by
rights: The operation being performed; the access token must
allow this
allow_expired: If False, raises an InvalidClientTokenError
if the token is expired
Returns:
Deferred[dict]: dict that includes:
`user` (UserID)
`is_guest` (bool)
`token_id` (int|None): access token id. May be None if guest
`device_id` (str|None): device corresponding to access token
Raises:
InvalidClientTokenError if a user by that token exists, but the token is
expired
InvalidClientCredentialsError if no user by that token exists or the token
is invalid
"""
if rights == "access":
# first look in the database
r = yield self._look_up_user_by_access_token(token)
if r:
valid_until_ms = r["valid_until_ms"]
if (not allow_expired and valid_until_ms is not None
and valid_until_ms < self.clock.time_msec()):
# there was a valid access token, but it has expired.
# soft-logout the user.
raise InvalidClientTokenError(
msg="Access token has expired", soft_logout=True)
return r
# otherwise it needs to be a valid macaroon
try:
user_id, guest = self._parse_and_validate_macaroon(token, rights)
user = UserID.from_string(user_id)
if rights == "access":
if not guest:
# non-guest access tokens must be in the database
logger.warning("Unrecognised access token - not in store.")
raise InvalidClientTokenError()
# Guest access tokens are not stored in the database (there can
# only be one access token per guest, anyway).
#
# In order to prevent guest access tokens being used as regular
# user access tokens (and hence getting around the invalidation
# process), we look up the user id and check that it is indeed
# a guest user.
#
# It would of course be much easier to store guest access
# tokens in the database as well, but that would break existing
# guest tokens.
stored_user = yield self.store.get_user_by_id(user_id)
if not stored_user:
raise InvalidClientTokenError("Unknown user_id %s" %
user_id)
if not stored_user["is_guest"]:
raise InvalidClientTokenError(
"Guest access token used for regular user")
ret = {
"user": user,
"is_guest": True,
"token_id": None,
# all guests get the same device id
"device_id": GUEST_DEVICE_ID,
}
elif rights == "delete_pusher":
# We don't store these tokens in the database
ret = {
"user": user,
"is_guest": False,
"token_id": None,
"device_id": None,
}
else:
raise RuntimeError("Unknown rights setting %s", rights)
return ret
except (
_InvalidMacaroonException,
pymacaroons.exceptions.MacaroonException,
TypeError,
ValueError,
) as e:
logger.warning("Invalid macaroon in auth: %s %s", type(e), e)
raise InvalidClientTokenError("Invalid macaroon passed.")
def _parse_and_validate_macaroon(self, token, rights="access"):
"""Takes a macaroon and tries to parse and validate it. This is cached
if and only if rights == access and there isn't an expiry.
On invalid macaroon raises _InvalidMacaroonException
Returns:
(user_id, is_guest)
"""
if rights == "access":
cached = self.token_cache.get(token, None)
if cached:
return cached
try:
macaroon = pymacaroons.Macaroon.deserialize(token)
except Exception: # deserialize can throw more-or-less anything
# doesn't look like a macaroon: treat it as an opaque token which
# must be in the database.
# TODO: it would be nice to get rid of this, but apparently some
# people use access tokens which aren't macaroons
raise _InvalidMacaroonException()
try:
user_id = self.get_user_id_from_macaroon(macaroon)
guest = False
for caveat in macaroon.caveats:
if caveat.caveat_id == "guest = true":
guest = True
self.validate_macaroon(macaroon, rights, user_id=user_id)
except (pymacaroons.exceptions.MacaroonException, TypeError,
ValueError):
raise InvalidClientTokenError("Invalid macaroon passed.")
if rights == "access":
self.token_cache[token] = (user_id, guest)
return user_id, guest
def get_user_id_from_macaroon(self, macaroon):
"""Retrieve the user_id given by the caveats on the macaroon.
Does *not* validate the macaroon.
Args:
macaroon (pymacaroons.Macaroon): The macaroon to validate
Returns:
(str) user id
Raises:
InvalidClientCredentialsError if there is no user_id caveat in the
macaroon
"""
user_prefix = "user_id = "
for caveat in macaroon.caveats:
if caveat.caveat_id.startswith(user_prefix):
return caveat.caveat_id[len(user_prefix):]
raise InvalidClientTokenError("No user caveat in macaroon")
def validate_macaroon(self, macaroon, type_string, user_id):
"""
validate that a Macaroon is understood by and was signed by this server.
Args:
macaroon(pymacaroons.Macaroon): The macaroon to validate
type_string(str): The kind of token required (e.g. "access",
"delete_pusher")
user_id (str): The user_id required
"""
v = pymacaroons.Verifier()
# the verifier runs a test for every caveat on the macaroon, to check
# that it is met for the current request. Each caveat must match at
# least one of the predicates specified by satisfy_exact or
# specify_general.
v.satisfy_exact("gen = 1")
v.satisfy_exact("type = " + type_string)
v.satisfy_exact("user_id = %s" % user_id)
v.satisfy_exact("guest = true")
v.satisfy_general(self._verify_expiry)
# access_tokens include a nonce for uniqueness: any value is acceptable
v.satisfy_general(lambda c: c.startswith("nonce = "))
v.verify(macaroon, self._macaroon_secret_key)
def _verify_expiry(self, caveat):
prefix = "time < "
if not caveat.startswith(prefix):
return False
expiry = int(caveat[len(prefix):])
now = self.hs.get_clock().time_msec()
return now < expiry
@defer.inlineCallbacks
def _look_up_user_by_access_token(self, token):
ret = yield self.store.get_user_by_access_token(token)
if not ret:
return None
# we use ret.get() below because *lots* of unit tests stub out
# get_user_by_access_token in a way where it only returns a couple of
# the fields.
user_info = {
"user": UserID.from_string(ret.get("name")),
"token_id": ret.get("token_id", None),
"is_guest": False,
"device_id": ret.get("device_id"),
"valid_until_ms": ret.get("valid_until_ms"),
}
return user_info
def get_appservice_by_req(self, request):
token = self.get_access_token_from_request(request)
service = self.store.get_app_service_by_token(token)
if not service:
logger.warning("Unrecognised appservice access token.")
raise InvalidClientTokenError()
request.authenticated_entity = service.sender
return defer.succeed(service)
async def is_server_admin(self, user: UserID) -> bool:
""" Check if the given user is a local server admin.
Args:
user: user to check
Returns:
True if the user is an admin
"""
return await self.store.is_server_admin(user)
def compute_auth_events(
self,
event,
current_state_ids: StateMap[str],
for_verification: bool = False,
):
"""Given an event and current state return the list of event IDs used
to auth an event.
If `for_verification` is False then only return auth events that
should be added to the event's `auth_events`.
Returns:
defer.Deferred(list[str]): List of event IDs.
"""
if event.type == EventTypes.Create:
return defer.succeed([])
# Currently we ignore the `for_verification` flag even though there are
# some situations where we can drop particular auth events when adding
# to the event's `auth_events` (e.g. joins pointing to previous joins
# when room is publicly joinable). Dropping event IDs has the
# advantage that the auth chain for the room grows slower, but we use
# the auth chain in state resolution v2 to order events, which means
# care must be taken if dropping events to ensure that it doesn't
# introduce undesirable "state reset" behaviour.
#
# All of which sounds a bit tricky so we don't bother for now.
auth_ids = []
for etype, state_key in event_auth.auth_types_for_event(event):
auth_ev_id = current_state_ids.get((etype, state_key))
if auth_ev_id:
auth_ids.append(auth_ev_id)
return defer.succeed(auth_ids)
async def check_can_change_room_list(self, room_id: str, user: UserID):
"""Determine whether the user is allowed to edit the room's entry in the
published room list.
Args:
room_id
user
"""
is_admin = await self.is_server_admin(user)
if is_admin:
return True
user_id = user.to_string()
await self.check_user_in_room(room_id, user_id)
# We currently require the user is a "moderator" in the room. We do this
# by checking if they would (theoretically) be able to change the
# m.room.canonical_alias events
power_level_event = await self.state.get_current_state(
room_id, EventTypes.PowerLevels, "")
auth_events = {}
if power_level_event:
auth_events[(EventTypes.PowerLevels, "")] = power_level_event
send_level = event_auth.get_send_level(EventTypes.CanonicalAlias, "",
power_level_event)
user_level = event_auth.get_user_power_level(user_id, auth_events)
return user_level >= send_level
@staticmethod
def has_access_token(request: Request):
"""Checks if the request has an access_token.
Returns:
bool: False if no access_token was given, True otherwise.
"""
query_params = request.args.get(b"access_token")
auth_headers = request.requestHeaders.getRawHeaders(b"Authorization")
return bool(query_params) or bool(auth_headers)
@staticmethod
def get_access_token_from_request(request: Request):
"""Extracts the access_token from the request.
Args:
request: The http request.
Returns:
unicode: The access_token
Raises:
MissingClientTokenError: If there isn't a single access_token in the
request
"""
auth_headers = request.requestHeaders.getRawHeaders(b"Authorization")
query_params = request.args.get(b"access_token")
if auth_headers:
# Try the get the access_token from a "Authorization: Bearer"
# header
if query_params is not None:
raise MissingClientTokenError(
"Mixing Authorization headers and access_token query parameters."
)
if len(auth_headers) > 1:
raise MissingClientTokenError(
"Too many Authorization headers.")
parts = auth_headers[0].split(b" ")
if parts[0] == b"Bearer" and len(parts) == 2:
return parts[1].decode("ascii")
else:
raise MissingClientTokenError("Invalid Authorization header.")
else:
# Try to get the access_token from the query params.
if not query_params:
raise MissingClientTokenError()
return query_params[0].decode("ascii")
@defer.inlineCallbacks
def check_user_in_room_or_world_readable(
self,
room_id: str,
user_id: str,
allow_departed_users: bool = False):
"""Checks that the user is or was in the room or the room is world
readable. If it isn't then an exception is raised.
Args:
room_id: room to check
user_id: user to check
allow_departed_users: if True, accept users that were previously
members but have now departed
Returns:
Deferred[tuple[str, str|None]]: Resolves to the current membership of
the user in the room and the membership event ID of the user. If
the user is not in the room and never has been, then
`(Membership.JOIN, None)` is returned.
"""
try:
# check_user_in_room will return the most recent membership
# event for the user if:
# * The user is a non-guest user, and was ever in the room
# * The user is a guest user, and has joined the room
# else it will throw.
member_event = yield self.check_user_in_room(
room_id, user_id, allow_departed_users=allow_departed_users)
return member_event.membership, member_event.event_id
except AuthError:
visibility = yield self.state.get_current_state(
room_id, EventTypes.RoomHistoryVisibility, "")
if (visibility and visibility.content["history_visibility"]
== "world_readable"):
return Membership.JOIN, None
raise AuthError(
403,
"User %s not in room %s, and room previews are disabled" %
(user_id, room_id),
)
def check_auth_blocking(self, *args, **kwargs):
return self._auth_blocking.check_auth_blocking(*args, **kwargs)
class AuthTestCase(unittest.HomeserverTestCase):
def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer):
self.store = Mock()
hs.datastores.main = self.store
hs.get_auth_handler().store = self.store
self.auth = Auth(hs)
# AuthBlocking reads from the hs' config on initialization. We need to
# modify its config instead of the hs'
self.auth_blocking = AuthBlocking(hs)
self.test_user = "******"
self.test_token = b"_test_token_"
# this is overridden for the appservice tests
self.store.get_app_service_by_token = Mock(return_value=None)
self.store.insert_client_ip = simple_async_mock(None)
self.store.is_support_user = simple_async_mock(False)
def test_get_user_by_req_user_valid_token(self):
user_info = TokenLookupResult(user_id=self.test_user,
token_id=5,
device_id="device")
self.store.get_user_by_access_token = simple_async_mock(user_info)
self.store.mark_access_token_as_used = simple_async_mock(None)
request = Mock(args={})
request.args[b"access_token"] = [self.test_token]
request.requestHeaders.getRawHeaders = mock_getRawHeaders()
requester = self.get_success(self.auth.get_user_by_req(request))
self.assertEqual(requester.user.to_string(), self.test_user)
def test_get_user_by_req_user_bad_token(self):
self.store.get_user_by_access_token = simple_async_mock(None)
request = Mock(args={})
request.args[b"access_token"] = [self.test_token]
request.requestHeaders.getRawHeaders = mock_getRawHeaders()
f = self.get_failure(self.auth.get_user_by_req(request),
InvalidClientTokenError).value
self.assertEqual(f.code, 401)
self.assertEqual(f.errcode, "M_UNKNOWN_TOKEN")
def test_get_user_by_req_user_missing_token(self):
user_info = TokenLookupResult(user_id=self.test_user, token_id=5)
self.store.get_user_by_access_token = simple_async_mock(user_info)
request = Mock(args={})
request.requestHeaders.getRawHeaders = mock_getRawHeaders()
f = self.get_failure(self.auth.get_user_by_req(request),
MissingClientTokenError).value
self.assertEqual(f.code, 401)
self.assertEqual(f.errcode, "M_MISSING_TOKEN")
def test_get_user_by_req_appservice_valid_token(self):
app_service = Mock(token="foobar",
url="a_url",
sender=self.test_user,
ip_range_whitelist=None)
self.store.get_app_service_by_token = Mock(return_value=app_service)
self.store.get_user_by_access_token = simple_async_mock(None)
request = Mock(args={})
request.getClientAddress.return_value.host = "127.0.0.1"
request.args[b"access_token"] = [self.test_token]
request.requestHeaders.getRawHeaders = mock_getRawHeaders()
requester = self.get_success(self.auth.get_user_by_req(request))
self.assertEqual(requester.user.to_string(), self.test_user)
def test_get_user_by_req_appservice_valid_token_good_ip(self):
from netaddr import IPSet
app_service = Mock(
token="foobar",
url="a_url",
sender=self.test_user,
ip_range_whitelist=IPSet(["192.168/16"]),
)
self.store.get_app_service_by_token = Mock(return_value=app_service)
self.store.get_user_by_access_token = simple_async_mock(None)
request = Mock(args={})
request.getClientAddress.return_value.host = "192.168.10.10"
request.args[b"access_token"] = [self.test_token]
request.requestHeaders.getRawHeaders = mock_getRawHeaders()
requester = self.get_success(self.auth.get_user_by_req(request))
self.assertEqual(requester.user.to_string(), self.test_user)
def test_get_user_by_req_appservice_valid_token_bad_ip(self):
from netaddr import IPSet
app_service = Mock(
token="foobar",
url="a_url",
sender=self.test_user,
ip_range_whitelist=IPSet(["192.168/16"]),
)
self.store.get_app_service_by_token = Mock(return_value=app_service)
self.store.get_user_by_access_token = simple_async_mock(None)
request = Mock(args={})
request.getClientAddress.return_value.host = "131.111.8.42"
request.args[b"access_token"] = [self.test_token]
request.requestHeaders.getRawHeaders = mock_getRawHeaders()
f = self.get_failure(self.auth.get_user_by_req(request),
InvalidClientTokenError).value
self.assertEqual(f.code, 401)
self.assertEqual(f.errcode, "M_UNKNOWN_TOKEN")
def test_get_user_by_req_appservice_bad_token(self):
self.store.get_app_service_by_token = Mock(return_value=None)
self.store.get_user_by_access_token = simple_async_mock(None)
request = Mock(args={})
request.args[b"access_token"] = [self.test_token]
request.requestHeaders.getRawHeaders = mock_getRawHeaders()
f = self.get_failure(self.auth.get_user_by_req(request),
InvalidClientTokenError).value
self.assertEqual(f.code, 401)
self.assertEqual(f.errcode, "M_UNKNOWN_TOKEN")
def test_get_user_by_req_appservice_missing_token(self):
app_service = Mock(token="foobar", url="a_url", sender=self.test_user)
self.store.get_app_service_by_token = Mock(return_value=app_service)
self.store.get_user_by_access_token = simple_async_mock(None)
request = Mock(args={})
request.requestHeaders.getRawHeaders = mock_getRawHeaders()
f = self.get_failure(self.auth.get_user_by_req(request),
MissingClientTokenError).value
self.assertEqual(f.code, 401)
self.assertEqual(f.errcode, "M_MISSING_TOKEN")
def test_get_user_by_req_appservice_valid_token_valid_user_id(self):
masquerading_user_id = b"@doppelganger:matrix.org"
app_service = Mock(token="foobar",
url="a_url",
sender=self.test_user,
ip_range_whitelist=None)
app_service.is_interested_in_user = Mock(return_value=True)
self.store.get_app_service_by_token = Mock(return_value=app_service)
# This just needs to return a truth-y value.
self.store.get_user_by_id = simple_async_mock({"is_guest": False})
self.store.get_user_by_access_token = simple_async_mock(None)
request = Mock(args={})
request.getClientAddress.return_value.host = "127.0.0.1"
request.args[b"access_token"] = [self.test_token]
request.args[b"user_id"] = [masquerading_user_id]
request.requestHeaders.getRawHeaders = mock_getRawHeaders()
requester = self.get_success(self.auth.get_user_by_req(request))
self.assertEqual(requester.user.to_string(),
masquerading_user_id.decode("utf8"))
def test_get_user_by_req_appservice_valid_token_bad_user_id(self):
masquerading_user_id = b"@doppelganger:matrix.org"
app_service = Mock(token="foobar",
url="a_url",
sender=self.test_user,
ip_range_whitelist=None)
app_service.is_interested_in_user = Mock(return_value=False)
self.store.get_app_service_by_token = Mock(return_value=app_service)
self.store.get_user_by_access_token = simple_async_mock(None)
request = Mock(args={})
request.getClientAddress.return_value.host = "127.0.0.1"
request.args[b"access_token"] = [self.test_token]
request.args[b"user_id"] = [masquerading_user_id]
request.requestHeaders.getRawHeaders = mock_getRawHeaders()
self.get_failure(self.auth.get_user_by_req(request), AuthError)
@override_config(
{"experimental_features": {
"msc3202_device_masquerading": True
}})
def test_get_user_by_req_appservice_valid_token_valid_device_id(self):
"""
Tests that when an application service passes the device_id URL parameter
with the ID of a valid device for the user in question,
the requester instance tracks that device ID.
"""
masquerading_user_id = b"@doppelganger:matrix.org"
masquerading_device_id = b"DOPPELDEVICE"
app_service = Mock(token="foobar",
url="a_url",
sender=self.test_user,
ip_range_whitelist=None)
app_service.is_interested_in_user = Mock(return_value=True)
self.store.get_app_service_by_token = Mock(return_value=app_service)
# This just needs to return a truth-y value.
self.store.get_user_by_id = simple_async_mock({"is_guest": False})
self.store.get_user_by_access_token = simple_async_mock(None)
# This also needs to just return a truth-y value
self.store.get_device = simple_async_mock({"hidden": False})
request = Mock(args={})
request.getClientAddress.return_value.host = "127.0.0.1"
request.args[b"access_token"] = [self.test_token]
request.args[b"user_id"] = [masquerading_user_id]
request.args[b"org.matrix.msc3202.device_id"] = [
masquerading_device_id
]
request.requestHeaders.getRawHeaders = mock_getRawHeaders()
requester = self.get_success(self.auth.get_user_by_req(request))
self.assertEqual(requester.user.to_string(),
masquerading_user_id.decode("utf8"))
self.assertEqual(requester.device_id,
masquerading_device_id.decode("utf8"))
@override_config(
{"experimental_features": {
"msc3202_device_masquerading": True
}})
def test_get_user_by_req_appservice_valid_token_invalid_device_id(self):
"""
Tests that when an application service passes the device_id URL parameter
with an ID that is not a valid device ID for the user in question,
the request fails with the appropriate error code.
"""
masquerading_user_id = b"@doppelganger:matrix.org"
masquerading_device_id = b"NOT_A_REAL_DEVICE_ID"
app_service = Mock(token="foobar",
url="a_url",
sender=self.test_user,
ip_range_whitelist=None)
app_service.is_interested_in_user = Mock(return_value=True)
self.store.get_app_service_by_token = Mock(return_value=app_service)
# This just needs to return a truth-y value.
self.store.get_user_by_id = simple_async_mock({"is_guest": False})
self.store.get_user_by_access_token = simple_async_mock(None)
# This also needs to just return a falsey value
self.store.get_device = simple_async_mock(None)
request = Mock(args={})
request.getClientAddress.return_value.host = "127.0.0.1"
request.args[b"access_token"] = [self.test_token]
request.args[b"user_id"] = [masquerading_user_id]
request.args[b"org.matrix.msc3202.device_id"] = [
masquerading_device_id
]
request.requestHeaders.getRawHeaders = mock_getRawHeaders()
failure = self.get_failure(self.auth.get_user_by_req(request),
AuthError)
self.assertEqual(failure.value.code, 400)
self.assertEqual(failure.value.errcode, Codes.EXCLUSIVE)
def test_get_user_by_req__puppeted_token__not_tracking_puppeted_mau(self):
self.store.get_user_by_access_token = simple_async_mock(
TokenLookupResult(
user_id="@baldrick:matrix.org",
device_id="device",
token_owner="@admin:matrix.org",
))
self.store.insert_client_ip = simple_async_mock(None)
request = Mock(args={})
request.getClientAddress.return_value.host = "127.0.0.1"
request.args[b"access_token"] = [self.test_token]
request.requestHeaders.getRawHeaders = mock_getRawHeaders()
self.get_success(self.auth.get_user_by_req(request))
self.store.insert_client_ip.assert_called_once()
def test_get_user_by_req__puppeted_token__tracking_puppeted_mau(self):
self.auth._track_puppeted_user_ips = True
self.store.get_user_by_access_token = simple_async_mock(
TokenLookupResult(
user_id="@baldrick:matrix.org",
device_id="device",
token_owner="@admin:matrix.org",
))
self.store.insert_client_ip = simple_async_mock(None)
request = Mock(args={})
request.getClientAddress.return_value.host = "127.0.0.1"
request.args[b"access_token"] = [self.test_token]
request.requestHeaders.getRawHeaders = mock_getRawHeaders()
self.get_success(self.auth.get_user_by_req(request))
self.assertEqual(self.store.insert_client_ip.call_count, 2)
def test_get_user_from_macaroon(self):
self.store.get_user_by_access_token = simple_async_mock(None)
user_id = "@baldrick:matrix.org"
macaroon = pymacaroons.Macaroon(
location=self.hs.config.server.server_name,
identifier="key",
key=self.hs.config.key.macaroon_secret_key,
)
# "Legacy" macaroons should not work for regular users not in the database
macaroon.add_first_party_caveat("gen = 1")
macaroon.add_first_party_caveat("type = access")
macaroon.add_first_party_caveat("user_id = %s" % (user_id, ))
serialized = macaroon.serialize()
self.get_failure(self.auth.get_user_by_access_token(serialized),
InvalidClientTokenError)
def test_get_guest_user_from_macaroon(self):
self.store.get_user_by_id = simple_async_mock({"is_guest": True})
self.store.get_user_by_access_token = simple_async_mock(None)
user_id = "@baldrick:matrix.org"
macaroon = pymacaroons.Macaroon(
location=self.hs.config.server.server_name,
identifier="key",
key=self.hs.config.key.macaroon_secret_key,
)
macaroon.add_first_party_caveat("gen = 1")
macaroon.add_first_party_caveat("type = access")
macaroon.add_first_party_caveat("user_id = %s" % (user_id, ))
macaroon.add_first_party_caveat("guest = true")
serialized = macaroon.serialize()
user_info = self.get_success(
self.auth.get_user_by_access_token(serialized))
self.assertEqual(user_id, user_info.user_id)
self.assertTrue(user_info.is_guest)
self.store.get_user_by_id.assert_called_with(user_id)
def test_blocking_mau(self):
self.auth_blocking._limit_usage_by_mau = False
self.auth_blocking._max_mau_value = 50
lots_of_users = 100
small_number_of_users = 1
# Ensure no error thrown
self.get_success(self.auth_blocking.check_auth_blocking())
self.auth_blocking._limit_usage_by_mau = True
self.store.get_monthly_active_count = simple_async_mock(lots_of_users)
e = self.get_failure(self.auth_blocking.check_auth_blocking(),
ResourceLimitError)
self.assertEqual(e.value.admin_contact,
self.hs.config.server.admin_contact)
self.assertEqual(e.value.errcode, Codes.RESOURCE_LIMIT_EXCEEDED)
self.assertEqual(e.value.code, 403)
# Ensure does not throw an error
self.store.get_monthly_active_count = simple_async_mock(
small_number_of_users)
self.get_success(self.auth_blocking.check_auth_blocking())
def test_blocking_mau__depending_on_user_type(self):
self.auth_blocking._max_mau_value = 50
self.auth_blocking._limit_usage_by_mau = True
self.store.get_monthly_active_count = simple_async_mock(100)
# Support users allowed
self.get_success(
self.auth_blocking.check_auth_blocking(
user_type=UserTypes.SUPPORT))
self.store.get_monthly_active_count = simple_async_mock(100)
# Bots not allowed
self.get_failure(
self.auth_blocking.check_auth_blocking(user_type=UserTypes.BOT),
ResourceLimitError,
)
self.store.get_monthly_active_count = simple_async_mock(100)
# Real users not allowed
self.get_failure(self.auth_blocking.check_auth_blocking(),
ResourceLimitError)
def test_blocking_mau__appservice_requester_allowed_when_not_tracking_ips(
self):
self.auth_blocking._max_mau_value = 50
self.auth_blocking._limit_usage_by_mau = True
self.auth_blocking._track_appservice_user_ips = False
self.store.get_monthly_active_count = simple_async_mock(100)
self.store.user_last_seen_monthly_active = simple_async_mock()
self.store.is_trial_user = simple_async_mock()
appservice = ApplicationService(
"abcd",
id="1234",
namespaces={
"users": [{
"regex": "@_appservice.*:sender",
"exclusive": True
}]
},
sender="@appservice:sender",
)
requester = Requester(
user="******",
access_token_id=None,
device_id="FOOBAR",
is_guest=False,
shadow_banned=False,
app_service=appservice,
authenticated_entity="@appservice:server",
)
self.get_success(
self.auth_blocking.check_auth_blocking(requester=requester))
def test_blocking_mau__appservice_requester_disallowed_when_tracking_ips(
self):
self.auth_blocking._max_mau_value = 50
self.auth_blocking._limit_usage_by_mau = True
self.auth_blocking._track_appservice_user_ips = True
self.store.get_monthly_active_count = simple_async_mock(100)
self.store.user_last_seen_monthly_active = simple_async_mock()
self.store.is_trial_user = simple_async_mock()
appservice = ApplicationService(
"abcd",
id="1234",
namespaces={
"users": [{
"regex": "@_appservice.*:sender",
"exclusive": True
}]
},
sender="@appservice:sender",
)
requester = Requester(
user="******",
access_token_id=None,
device_id="FOOBAR",
is_guest=False,
shadow_banned=False,
app_service=appservice,
authenticated_entity="@appservice:server",
)
self.get_failure(
self.auth_blocking.check_auth_blocking(requester=requester),
ResourceLimitError,
)
def test_reserved_threepid(self):
self.auth_blocking._limit_usage_by_mau = True
self.auth_blocking._max_mau_value = 1
self.store.get_monthly_active_count = simple_async_mock(2)
threepid = {"medium": "email", "address": "*****@*****.**"}
unknown_threepid = {
"medium": "email",
"address": "*****@*****.**"
}
self.auth_blocking._mau_limits_reserved_threepids = [threepid]
self.get_failure(self.auth_blocking.check_auth_blocking(),
ResourceLimitError)
self.get_failure(
self.auth_blocking.check_auth_blocking(threepid=unknown_threepid),
ResourceLimitError,
)
self.get_success(
self.auth_blocking.check_auth_blocking(threepid=threepid))
def test_hs_disabled(self):
self.auth_blocking._hs_disabled = True
self.auth_blocking._hs_disabled_message = "Reason for being disabled"
e = self.get_failure(self.auth_blocking.check_auth_blocking(),
ResourceLimitError)
self.assertEqual(e.value.admin_contact,
self.hs.config.server.admin_contact)
self.assertEqual(e.value.errcode, Codes.RESOURCE_LIMIT_EXCEEDED)
self.assertEqual(e.value.code, 403)
def test_hs_disabled_no_server_notices_user(self):
"""Check that 'hs_disabled_message' works correctly when there is no
server_notices user.
"""
# this should be the default, but we had a bug where the test was doing the wrong
# thing, so let's make it explicit
self.auth_blocking._server_notices_mxid = None
self.auth_blocking._hs_disabled = True
self.auth_blocking._hs_disabled_message = "Reason for being disabled"
e = self.get_failure(self.auth_blocking.check_auth_blocking(),
ResourceLimitError)
self.assertEqual(e.value.admin_contact,
self.hs.config.server.admin_contact)
self.assertEqual(e.value.errcode, Codes.RESOURCE_LIMIT_EXCEEDED)
self.assertEqual(e.value.code, 403)
def test_server_notices_mxid_special_cased(self):
self.auth_blocking._hs_disabled = True
user = "******"
self.auth_blocking._server_notices_mxid = user
self.auth_blocking._hs_disabled_message = "Reason for being disabled"
self.get_success(self.auth_blocking.check_auth_blocking(user))