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Merge pull request #1654 from matrix-org/rav/no_more_refresh_tokens

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Stop generating refresh_tokens
This commit is contained in:
Richard van der Hoff 2016-12-01 11:42:53 +00:00 committed by GitHub
commit 471200074b
9 changed files with 26 additions and 210 deletions
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5
synapse/api/auth.py
View file

@ -791,7 +791,7 @@ class Auth(object):
Args:
macaroon(pymacaroons.Macaroon): The macaroon to validate
type_string(str): The kind of token required (e.g. "access", "refresh",
type_string(str): The kind of token required (e.g. "access",
"delete_pusher")
verify_expiry(bool): Whether to verify whether the macaroon has expired.
user_id (str): The user_id required
@ -820,8 +820,7 @@ class Auth(object):
else:
v.satisfy_general(lambda c: c.startswith("time < "))
# access_tokens and refresh_tokens include a nonce for uniqueness: any
# value is acceptable
# access_tokens include a nonce for uniqueness: any value is acceptable
v.satisfy_general(lambda c: c.startswith("nonce = "))
v.verify(macaroon, self.hs.config.macaroon_secret_key)

30
synapse/handlers/auth.py
View file

@ -380,12 +380,10 @@ class AuthHandler(BaseHandler):
return self._check_password(user_id, password)
@defer.inlineCallbacks
def get_login_tuple_for_user_id(self, user_id, device_id=None,
initial_display_name=None):
def get_access_token_for_user_id(self, user_id, device_id=None,
initial_display_name=None):
"""
Gets login tuple for the user with the given user ID.
Creates a new access/refresh token for the user.
Creates a new access token for the user with the given user ID.
The user is assumed to have been authenticated by some other
machanism (e.g. CAS), and the user_id converted to the canonical case.
@ -400,16 +398,13 @@ class AuthHandler(BaseHandler):
initial_display_name (str): display name to associate with the
device if it needs re-registering
Returns:
A tuple of:
The access token for the user's session.
The refresh token for the user's session.
Raises:
StoreError if there was a problem storing the token.
LoginError if there was an authentication problem.
"""
logger.info("Logging in user %s on device %s", user_id, device_id)
access_token = yield self.issue_access_token(user_id, device_id)
refresh_token = yield self.issue_refresh_token(user_id, device_id)
# the device *should* have been registered before we got here; however,
# it's possible we raced against a DELETE operation. The thing we
@ -420,7 +415,7 @@ class AuthHandler(BaseHandler):
user_id, device_id, initial_display_name
)
defer.returnValue((access_token, refresh_token))
defer.returnValue(access_token)
@defer.inlineCallbacks
def check_user_exists(self, user_id):
@ -531,13 +526,6 @@ class AuthHandler(BaseHandler):
device_id)
defer.returnValue(access_token)
@defer.inlineCallbacks
def issue_refresh_token(self, user_id, device_id=None):
refresh_token = self.generate_refresh_token(user_id)
yield self.store.add_refresh_token_to_user(user_id, refresh_token,
device_id)
defer.returnValue(refresh_token)
def generate_access_token(self, user_id, extra_caveats=None):
extra_caveats = extra_caveats or []
macaroon = self._generate_base_macaroon(user_id)
@ -551,16 +539,6 @@ class AuthHandler(BaseHandler):
macaroon.add_first_party_caveat(caveat)
return macaroon.serialize()
def generate_refresh_token(self, user_id):
m = self._generate_base_macaroon(user_id)
m.add_first_party_caveat("type = refresh")
# Important to add a nonce, because otherwise every refresh token for a
# user will be the same.
m.add_first_party_caveat("nonce = %s" % (
stringutils.random_string_with_symbols(16),
))
return m.serialize()
def generate_short_term_login_token(self, user_id, duration_in_ms=(2 * 60 * 1000)):
macaroon = self._generate_base_macaroon(user_id)
macaroon.add_first_party_caveat("type = login")

28
synapse/rest/client/v1/login.py
View file

@ -137,16 +137,13 @@ class LoginRestServlet(ClientV1RestServlet):
password=login_submission["password"],
)
device_id = yield self._register_device(user_id, login_submission)
access_token, refresh_token = (
yield auth_handler.get_login_tuple_for_user_id(
user_id, device_id,
login_submission.get("initial_device_display_name")
)
access_token = yield auth_handler.get_access_token_for_user_id(
user_id, device_id,
login_submission.get("initial_device_display_name"),
)
result = {
"user_id": user_id, # may have changed
"access_token": access_token,
"refresh_token": refresh_token,
"home_server": self.hs.hostname,
"device_id": device_id,
}
@ -161,16 +158,13 @@ class LoginRestServlet(ClientV1RestServlet):
yield auth_handler.validate_short_term_login_token_and_get_user_id(token)
)
device_id = yield self._register_device(user_id, login_submission)
access_token, refresh_token = (
yield auth_handler.get_login_tuple_for_user_id(
user_id, device_id,
login_submission.get("initial_device_display_name")
)
access_token = yield auth_handler.get_access_token_for_user_id(
user_id, device_id,
login_submission.get("initial_device_display_name"),
)
result = {
"user_id": user_id, # may have changed
"access_token": access_token,
"refresh_token": refresh_token,
"home_server": self.hs.hostname,
"device_id": device_id,
}
@ -207,16 +201,14 @@ class LoginRestServlet(ClientV1RestServlet):
device_id = yield self._register_device(
registered_user_id, login_submission
)
access_token, refresh_token = (
yield auth_handler.get_login_tuple_for_user_id(
registered_user_id, device_id,
login_submission.get("initial_device_display_name")
)
access_token = yield auth_handler.get_access_token_for_user_id(
registered_user_id, device_id,
login_submission.get("initial_device_display_name"),
)
result = {
"user_id": registered_user_id,
"access_token": access_token,
"refresh_token": refresh_token,
"home_server": self.hs.hostname,
}
else:

10
synapse/rest/client/v2_alpha/register.py
View file

@ -374,8 +374,7 @@ class RegisterRestServlet(RestServlet):
def _create_registration_details(self, user_id, params):
"""Complete registration of newly-registered user
Allocates device_id if one was not given; also creates access_token
and refresh_token.
Allocates device_id if one was not given; also creates access_token.
Args:
(str) user_id: full canonical @user:id
@ -386,8 +385,8 @@ class RegisterRestServlet(RestServlet):
"""
device_id = yield self._register_device(user_id, params)
access_token, refresh_token = (
yield self.auth_handler.get_login_tuple_for_user_id(
access_token = (
yield self.auth_handler.get_access_token_for_user_id(
user_id, device_id=device_id,
initial_display_name=params.get("initial_device_display_name")
)
@ -397,7 +396,6 @@ class RegisterRestServlet(RestServlet):
"user_id": user_id,
"access_token": access_token,
"home_server": self.hs.hostname,
"refresh_token": refresh_token,
"device_id": device_id,
})
@ -441,8 +439,6 @@ class RegisterRestServlet(RestServlet):
access_token = self.auth_handler.generate_access_token(
user_id, ["guest = true"]
)
# XXX the "guest" caveat is not copied by /tokenrefresh. That's ok
# so long as we don't return a refresh_token here.
defer.returnValue((200, {
"user_id": user_id,
"device_id": device_id,

26
synapse/rest/client/v2_alpha/tokenrefresh.py
View file

@ -15,8 +15,8 @@
from twisted.internet import defer
from synapse.api.errors import AuthError, StoreError, SynapseError
from synapse.http.servlet import RestServlet, parse_json_object_from_request
from synapse.api.errors import AuthError
from synapse.http.servlet import RestServlet
from ._base import client_v2_patterns
@ -30,30 +30,10 @@ class TokenRefreshRestServlet(RestServlet):
def __init__(self, hs):
super(TokenRefreshRestServlet, self).__init__()
self.hs = hs
self.store = hs.get_datastore()
@defer.inlineCallbacks
def on_POST(self, request):
body = parse_json_object_from_request(request)
try:
old_refresh_token = body["refresh_token"]
auth_handler = self.hs.get_auth_handler()
refresh_result = yield self.store.exchange_refresh_token(
old_refresh_token, auth_handler.generate_refresh_token
)
(user_id, new_refresh_token, device_id) = refresh_result
new_access_token = yield auth_handler.issue_access_token(
user_id, device_id
)
defer.returnValue((200, {
"access_token": new_access_token,
"refresh_token": new_refresh_token,
}))
except KeyError:
raise SynapseError(400, "Missing required key 'refresh_token'.")
except StoreError:
raise AuthError(403, "Did not recognize refresh token")
raise AuthError(403, "tokenrefresh is no longer supported.")
def register_servlets(hs, http_server):

1
synapse/storage/__init__.py
View file

@ -120,7 +120,6 @@ class DataStore(RoomMemberStore, RoomStore,
self._transaction_id_gen = IdGenerator(db_conn, "sent_transactions", "id")
self._state_groups_id_gen = IdGenerator(db_conn, "state_groups", "id")
self._access_tokens_id_gen = IdGenerator(db_conn, "access_tokens", "id")
self._refresh_tokens_id_gen = IdGenerator(db_conn, "refresh_tokens", "id")
self._event_reports_id_gen = IdGenerator(db_conn, "event_reports", "id")
self._push_rule_id_gen = IdGenerator(db_conn, "push_rules", "id")
self._push_rules_enable_id_gen = IdGenerator(db_conn, "push_rules_enable", "id")

66
synapse/storage/registration.py
View file

@ -68,31 +68,6 @@ class RegistrationStore(background_updates.BackgroundUpdateStore):
desc="add_access_token_to_user",
)
@defer.inlineCallbacks
def add_refresh_token_to_user(self, user_id, token, device_id=None):
"""Adds a refresh token for the given user.
Args:
user_id (str): The user ID.
token (str): The new refresh token to add.
device_id (str): ID of the device to associate with the access
token
Raises:
StoreError if there was a problem adding this.
"""
next_id = self._refresh_tokens_id_gen.get_next()
yield self._simple_insert(
"refresh_tokens",
{
"id": next_id,
"user_id": user_id,
"token": token,
"device_id": device_id,
},
desc="add_refresh_token_to_user",
)
def register(self, user_id, token=None, password_hash=None,
was_guest=False, make_guest=False, appservice_id=None,
create_profile_with_localpart=None, admin=False):
@ -353,47 +328,6 @@ class RegistrationStore(background_updates.BackgroundUpdateStore):
token
)
def exchange_refresh_token(self, refresh_token, token_generator):
"""Exchange a refresh token for a new one.
Doing so invalidates the old refresh token - refresh tokens are single
use.
Args:
refresh_token (str): The refresh token of a user.
token_generator (fn: str -> str): Function which, when given a
user ID, returns a unique refresh token for that user. This
function must never return the same value twice.
Returns:
tuple of (user_id, new_refresh_token, device_id)
Raises:
StoreError if no user was found with that refresh token.
"""
return self.runInteraction(
"exchange_refresh_token",
self._exchange_refresh_token,
refresh_token,
token_generator
)
def _exchange_refresh_token(self, txn, old_token, token_generator):
sql = "SELECT user_id, device_id FROM refresh_tokens WHERE token = ?"
txn.execute(sql, (old_token,))
rows = self.cursor_to_dict(txn)
if not rows:
raise StoreError(403, "Did not recognize refresh token")
user_id = rows[0]["user_id"]
device_id = rows[0]["device_id"]
# TODO(danielwh): Maybe perform a validation on the macaroon that
# macaroon.user_id == user_id.
new_token = token_generator(user_id)
sql = "UPDATE refresh_tokens SET token = ? WHERE token = ?"
txn.execute(sql, (new_token, old_token,))
return user_id, new_token, device_id
@defer.inlineCallbacks
def is_server_admin(self, user):
res = yield self._simple_select_one_onecol(

12
tests/rest/client/v2_alpha/test_register.py
View file

@ -67,8 +67,8 @@ class RegisterRestServletTestCase(unittest.TestCase):
self.registration_handler.appservice_register = Mock(
return_value=user_id
)
self.auth_handler.get_login_tuple_for_user_id = Mock(
return_value=(token, "kermits_refresh_token")
self.auth_handler.get_access_token_for_user_id = Mock(
return_value=token
)
(code, result) = yield self.servlet.on_POST(self.request)
@ -76,11 +76,9 @@ class RegisterRestServletTestCase(unittest.TestCase):
det_data = {
"user_id": user_id,
"access_token": token,
"refresh_token": "kermits_refresh_token",
"home_server": self.hs.hostname
}
self.assertDictContainsSubset(det_data, result)
self.assertIn("refresh_token", result)
@defer.inlineCallbacks
def test_POST_appservice_registration_invalid(self):
@ -126,8 +124,8 @@ class RegisterRestServletTestCase(unittest.TestCase):
"password": "monkey"
}, None)
self.registration_handler.register = Mock(return_value=(user_id, None))
self.auth_handler.get_login_tuple_for_user_id = Mock(
return_value=(token, "kermits_refresh_token")
self.auth_handler.get_access_token_for_user_id = Mock(
return_value=token
)
self.device_handler.check_device_registered = \
Mock(return_value=device_id)
@ -137,12 +135,10 @@ class RegisterRestServletTestCase(unittest.TestCase):
det_data = {
"user_id": user_id,
"access_token": token,
"refresh_token": "kermits_refresh_token",
"home_server": self.hs.hostname,
"device_id": device_id,
}
self.assertDictContainsSubset(det_data, result)
self.assertIn("refresh_token", result)
self.auth_handler.get_login_tuple_for_user_id(
user_id, device_id=device_id, initial_device_display_name=None)

58
tests/storage/test_registration.py
View file

@ -17,9 +17,6 @@
from tests import unittest
from twisted.internet import defer
from synapse.api.errors import StoreError
from synapse.util import stringutils
from tests.utils import setup_test_homeserver
@ -80,64 +77,12 @@ class RegistrationStoreTestCase(unittest.TestCase):
self.assertTrue("token_id" in result)
@defer.inlineCallbacks
def test_exchange_refresh_token_valid(self):
uid = stringutils.random_string(32)
device_id = stringutils.random_string(16)
generator = TokenGenerator()
last_token = generator.generate(uid)
self.db_pool.runQuery(
"INSERT INTO refresh_tokens(user_id, token, device_id) "
"VALUES(?,?,?)",
(uid, last_token, device_id))
(found_user_id, refresh_token, device_id) = \
yield self.store.exchange_refresh_token(last_token,
generator.generate)
self.assertEqual(uid, found_user_id)
rows = yield self.db_pool.runQuery(
"SELECT token, device_id FROM refresh_tokens WHERE user_id = ?",
(uid, ))
self.assertEqual([(refresh_token, device_id)], rows)
# We issued token 1, then exchanged it for token 2
expected_refresh_token = u"%s-%d" % (uid, 2,)
self.assertEqual(expected_refresh_token, refresh_token)
@defer.inlineCallbacks
def test_exchange_refresh_token_none(self):
uid = stringutils.random_string(32)
generator = TokenGenerator()
last_token = generator.generate(uid)
with self.assertRaises(StoreError):
yield self.store.exchange_refresh_token(last_token, generator.generate)
@defer.inlineCallbacks
def test_exchange_refresh_token_invalid(self):
uid = stringutils.random_string(32)
generator = TokenGenerator()
last_token = generator.generate(uid)
wrong_token = "%s-wrong" % (last_token,)
self.db_pool.runQuery(
"INSERT INTO refresh_tokens(user_id, token) VALUES(?,?)",
(uid, wrong_token,))
with self.assertRaises(StoreError):
yield self.store.exchange_refresh_token(last_token, generator.generate)
@defer.inlineCallbacks
def test_user_delete_access_tokens(self):
# add some tokens
generator = TokenGenerator()
refresh_token = generator.generate(self.user_id)
yield self.store.register(self.user_id, self.tokens[0], self.pwhash)
yield self.store.add_access_token_to_user(self.user_id, self.tokens[1],
self.device_id)
yield self.store.add_refresh_token_to_user(self.user_id, refresh_token,
self.device_id)
# now delete some
yield self.store.user_delete_access_tokens(
@ -146,9 +91,6 @@ class RegistrationStoreTestCase(unittest.TestCase):
# check they were deleted
user = yield self.store.get_user_by_access_token(self.tokens[1])
self.assertIsNone(user, "access token was not deleted by device_id")
with self.assertRaises(StoreError):
yield self.store.exchange_refresh_token(refresh_token,
generator.generate)
# check the one not associated with the device was not deleted
user = yield self.store.get_user_by_access_token(self.tokens[0])