diff options
| -rw-r--r-- | synapse/api/auth.py | 16 | ||||
| -rw-r--r-- | synapse/config/registration.py | 6 | ||||
| -rw-r--r-- | synapse/handlers/auth.py | 11 | ||||
| -rw-r--r-- | synapse/handlers/register.py | 5 | ||||
| -rw-r--r-- | synapse/rest/client/v1/register.py | 12 | ||||
| -rw-r--r-- | tests/handlers/test_auth.py | 6 | ||||
| -rw-r--r-- | tests/handlers/test_register.py | 6 |
7 files changed, 26 insertions, 36 deletions
diff --git a/synapse/api/auth.py b/synapse/api/auth.py index dbfabc70b1..b17025c7ce 100644 --- a/synapse/api/auth.py +++ b/synapse/api/auth.py @@ -794,9 +794,6 @@ class Auth(object): type_string(str): The kind of token required (e.g. "access", "refresh", "delete_pusher") verify_expiry(bool): Whether to verify whether the macaroon has expired. - This should really always be True, but there exist access tokens - in the wild which expire when they should not, so we can't - enforce expiry yet. user_id (str): The user_id required """ v = pymacaroons.Verifier() @@ -809,11 +806,24 @@ class Auth(object): v.satisfy_exact("type = " + type_string) v.satisfy_exact("user_id = %s" % user_id) v.satisfy_exact("guest = true") + + # verify_expiry should really always be True, but there exist access + # tokens in the wild which expire when they should not, so we can't + # enforce expiry yet (so we have to allow any caveat starting with + # 'time < ' in access tokens). + # + # On the other hand, short-term login tokens (as used by CAS login, for + # example) have an expiry time which we do want to enforce. + if verify_expiry: v.satisfy_general(self._verify_expiry) else: v.satisfy_general(lambda c: c.startswith("time < ")) + # access_tokens and refresh_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) def _verify_expiry(self, caveat): diff --git a/synapse/config/registration.py b/synapse/config/registration.py index cc3f879857..87e500c97a 100644 --- a/synapse/config/registration.py +++ b/synapse/config/registration.py @@ -32,7 +32,6 @@ class RegistrationConfig(Config): ) self.registration_shared_secret = config.get("registration_shared_secret") - self.user_creation_max_duration = int(config["user_creation_max_duration"]) self.bcrypt_rounds = config.get("bcrypt_rounds", 12) self.trusted_third_party_id_servers = config["trusted_third_party_id_servers"] @@ -55,11 +54,6 @@ class RegistrationConfig(Config): # secret, even if registration is otherwise disabled. registration_shared_secret: "%(registration_shared_secret)s" - # Sets the expiry for the short term user creation in - # milliseconds. For instance the bellow duration is two weeks - # in milliseconds. - user_creation_max_duration: 1209600000 - # Set the number of bcrypt rounds used to generate password hash. # Larger numbers increase the work factor needed to generate the hash. # The default number of rounds is 12. diff --git a/synapse/handlers/auth.py b/synapse/handlers/auth.py index a2866af431..20aaec36a4 100644 --- a/synapse/handlers/auth.py +++ b/synapse/handlers/auth.py @@ -538,14 +538,15 @@ class AuthHandler(BaseHandler): device_id) defer.returnValue(refresh_token) - def generate_access_token(self, user_id, extra_caveats=None, - duration_in_ms=(60 * 60 * 1000)): + def generate_access_token(self, user_id, extra_caveats=None): extra_caveats = extra_caveats or [] macaroon = self._generate_base_macaroon(user_id) macaroon.add_first_party_caveat("type = access") - now = self.hs.get_clock().time_msec() - expiry = now + duration_in_ms - macaroon.add_first_party_caveat("time < %d" % (expiry,)) + # Include a nonce, to make sure that each login gets a different + # access token. + macaroon.add_first_party_caveat("nonce = %s" % ( + stringutils.random_string_with_symbols(16), + )) for caveat in extra_caveats: macaroon.add_first_party_caveat(caveat) return macaroon.serialize() diff --git a/synapse/handlers/register.py b/synapse/handlers/register.py index 7e119f13b1..886fec8701 100644 --- a/synapse/handlers/register.py +++ b/synapse/handlers/register.py @@ -369,7 +369,7 @@ class RegistrationHandler(BaseHandler): defer.returnValue(data) @defer.inlineCallbacks - def get_or_create_user(self, requester, localpart, displayname, duration_in_ms, + def get_or_create_user(self, requester, localpart, displayname, password_hash=None): """Creates a new user if the user does not exist, else revokes all previous access tokens and generates a new one. @@ -399,8 +399,7 @@ class RegistrationHandler(BaseHandler): user = UserID(localpart, self.hs.hostname) user_id = user.to_string() - token = self.auth_handler().generate_access_token( - user_id, None, duration_in_ms) + token = self.auth_handler().generate_access_token(user_id) if need_register: yield self.store.register( diff --git a/synapse/rest/client/v1/register.py b/synapse/rest/client/v1/register.py index b5a76fefac..ecf7e311a9 100644 --- a/synapse/rest/client/v1/register.py +++ b/synapse/rest/client/v1/register.py @@ -384,7 +384,6 @@ class CreateUserRestServlet(ClientV1RestServlet): def __init__(self, hs): super(CreateUserRestServlet, self).__init__(hs) self.store = hs.get_datastore() - self.direct_user_creation_max_duration = hs.config.user_creation_max_duration self.handlers = hs.get_handlers() @defer.inlineCallbacks @@ -418,18 +417,8 @@ class CreateUserRestServlet(ClientV1RestServlet): if "displayname" not in user_json: raise SynapseError(400, "Expected 'displayname' key.") - if "duration_seconds" not in user_json: - raise SynapseError(400, "Expected 'duration_seconds' key.") - localpart = user_json["localpart"].encode("utf-8") displayname = user_json["displayname"].encode("utf-8") - duration_seconds = 0 - try: - duration_seconds = int(user_json["duration_seconds"]) - except ValueError: - raise SynapseError(400, "Failed to parse 'duration_seconds'") - if duration_seconds > self.direct_user_creation_max_duration: - duration_seconds = self.direct_user_creation_max_duration password_hash = user_json["password_hash"].encode("utf-8") \ if user_json.get("password_hash") else None @@ -438,7 +427,6 @@ class CreateUserRestServlet(ClientV1RestServlet): requester=requester, localpart=localpart, displayname=displayname, - duration_in_ms=(duration_seconds * 1000), password_hash=password_hash ) diff --git a/tests/handlers/test_auth.py b/tests/handlers/test_auth.py index 4a8cd19acf..9d013e5ca7 100644 --- a/tests/handlers/test_auth.py +++ b/tests/handlers/test_auth.py @@ -61,14 +61,14 @@ class AuthTestCase(unittest.TestCase): def verify_type(caveat): return caveat == "type = access" - def verify_expiry(caveat): - return caveat == "time < 8600000" + def verify_nonce(caveat): + return caveat.startswith("nonce =") v = pymacaroons.Verifier() v.satisfy_general(verify_gen) v.satisfy_general(verify_user) v.satisfy_general(verify_type) - v.satisfy_general(verify_expiry) + v.satisfy_general(verify_nonce) v.verify(macaroon, self.hs.config.macaroon_secret_key) def test_short_term_login_token_gives_user_id(self): diff --git a/tests/handlers/test_register.py b/tests/handlers/test_register.py index 9c9d144690..a4380c48b4 100644 --- a/tests/handlers/test_register.py +++ b/tests/handlers/test_register.py @@ -53,13 +53,12 @@ class RegistrationTestCase(unittest.TestCase): @defer.inlineCallbacks def test_user_is_created_and_logged_in_if_doesnt_exist(self): - duration_ms = 200 local_part = "someone" display_name = "someone" user_id = "@someone:test" requester = create_requester("@as:test") result_user_id, result_token = yield self.handler.get_or_create_user( - requester, local_part, display_name, duration_ms) + requester, local_part, display_name) self.assertEquals(result_user_id, user_id) self.assertEquals(result_token, 'secret') @@ -71,12 +70,11 @@ class RegistrationTestCase(unittest.TestCase): user_id=frank.to_string(), token="jkv;g498752-43gj['eamb!-5", password_hash=None) - duration_ms = 200 local_part = "frank" display_name = "Frank" user_id = "@frank:test" requester = create_requester("@as:test") result_user_id, result_token = yield self.handler.get_or_create_user( - requester, local_part, display_name, duration_ms) + requester, local_part, display_name) self.assertEquals(result_user_id, user_id) self.assertEquals(result_token, 'secret') |