diff options
Diffstat (limited to 'synapse')
| -rw-r--r-- | synapse/api/auth.py | 22 | ||||
| -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/http/matrixfederationclient.py | 48 | ||||
| -rw-r--r-- | synapse/rest/client/v1/register.py | 12 | ||||
| -rw-r--r-- | synapse/rest/client/v2_alpha/devices.py | 6 | ||||
| -rw-r--r-- | synapse/rest/client/v2_alpha/keys.py | 10 | ||||
| -rw-r--r-- | synapse/rest/client/v2_alpha/register.py | 19 | ||||
| -rw-r--r-- | synapse/rest/client/v2_alpha/sendtodevice.py | 2 |
10 files changed, 80 insertions, 61 deletions
diff --git a/synapse/api/auth.py b/synapse/api/auth.py index 1ab27da941..b17025c7ce 100644 --- a/synapse/api/auth.py +++ b/synapse/api/auth.py @@ -39,6 +39,9 @@ AuthEventTypes = ( EventTypes.ThirdPartyInvite, ) +# guests always get this device id. +GUEST_DEVICE_ID = "guest_device" + class Auth(object): """ @@ -717,7 +720,8 @@ class Auth(object): "user": user, "is_guest": True, "token_id": None, - "device_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 @@ -790,9 +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() @@ -805,11 +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 8984f87f96..91e7e725b9 100644 --- a/synapse/handlers/auth.py +++ b/synapse/handlers/auth.py @@ -526,14 +526,15 @@ class AuthHandler(BaseHandler): device_id) defer.returnValue(access_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/http/matrixfederationclient.py b/synapse/http/matrixfederationclient.py index d0556ae347..d5970c05a8 100644 --- a/synapse/http/matrixfederationclient.py +++ b/synapse/http/matrixfederationclient.py @@ -33,6 +33,7 @@ from synapse.api.errors import ( from signedjson.sign import sign_json +import cgi import simplejson as json import logging import random @@ -292,12 +293,7 @@ class MatrixFederationHttpClient(object): if 200 <= response.code < 300: # We need to update the transactions table to say it was sent? - c_type = response.headers.getRawHeaders("Content-Type") - - if "application/json" not in c_type: - raise RuntimeError( - "Content-Type not application/json" - ) + check_content_type_is_json(response.headers) body = yield preserve_context_over_fn(readBody, response) defer.returnValue(json.loads(body)) @@ -342,12 +338,7 @@ class MatrixFederationHttpClient(object): if 200 <= response.code < 300: # We need to update the transactions table to say it was sent? - c_type = response.headers.getRawHeaders("Content-Type") - - if "application/json" not in c_type: - raise RuntimeError( - "Content-Type not application/json" - ) + check_content_type_is_json(response.headers) body = yield preserve_context_over_fn(readBody, response) @@ -400,12 +391,7 @@ class MatrixFederationHttpClient(object): if 200 <= response.code < 300: # We need to update the transactions table to say it was sent? - c_type = response.headers.getRawHeaders("Content-Type") - - if "application/json" not in c_type: - raise RuntimeError( - "Content-Type not application/json" - ) + check_content_type_is_json(response.headers) body = yield preserve_context_over_fn(readBody, response) @@ -525,3 +511,29 @@ def _flatten_response_never_received(e): ) else: return "%s: %s" % (type(e).__name__, e.message,) + + +def check_content_type_is_json(headers): + """ + Check that a set of HTTP headers have a Content-Type header, and that it + is application/json. + + Args: + headers (twisted.web.http_headers.Headers): headers to check + + Raises: + RuntimeError if the + + """ + c_type = headers.getRawHeaders("Content-Type") + if c_type is None: + raise RuntimeError( + "No Content-Type header" + ) + + c_type = c_type[0] # only the first header + val, options = cgi.parse_header(c_type) + if val != "application/json": + raise RuntimeError( + "Content-Type not application/json: was '%s'" % c_type + ) 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/synapse/rest/client/v2_alpha/devices.py b/synapse/rest/client/v2_alpha/devices.py index 3ba0b0fc07..a1feaf3d54 100644 --- a/synapse/rest/client/v2_alpha/devices.py +++ b/synapse/rest/client/v2_alpha/devices.py @@ -39,7 +39,7 @@ class DevicesRestServlet(servlet.RestServlet): @defer.inlineCallbacks def on_GET(self, request): - requester = yield self.auth.get_user_by_req(request) + requester = yield self.auth.get_user_by_req(request, allow_guest=True) devices = yield self.device_handler.get_devices_by_user( requester.user.to_string() ) @@ -63,7 +63,7 @@ class DeviceRestServlet(servlet.RestServlet): @defer.inlineCallbacks def on_GET(self, request, device_id): - requester = yield self.auth.get_user_by_req(request) + requester = yield self.auth.get_user_by_req(request, allow_guest=True) device = yield self.device_handler.get_device( requester.user.to_string(), device_id, @@ -99,7 +99,7 @@ class DeviceRestServlet(servlet.RestServlet): @defer.inlineCallbacks def on_PUT(self, request, device_id): - requester = yield self.auth.get_user_by_req(request) + requester = yield self.auth.get_user_by_req(request, allow_guest=True) body = servlet.parse_json_object_from_request(request) yield self.device_handler.update_device( diff --git a/synapse/rest/client/v2_alpha/keys.py b/synapse/rest/client/v2_alpha/keys.py index f185f9a774..08b7c99d57 100644 --- a/synapse/rest/client/v2_alpha/keys.py +++ b/synapse/rest/client/v2_alpha/keys.py @@ -65,7 +65,7 @@ class KeyUploadServlet(RestServlet): @defer.inlineCallbacks def on_POST(self, request, device_id): - requester = yield self.auth.get_user_by_req(request) + requester = yield self.auth.get_user_by_req(request, allow_guest=True) user_id = requester.user.to_string() body = parse_json_object_from_request(request) @@ -150,7 +150,7 @@ class KeyQueryServlet(RestServlet): @defer.inlineCallbacks def on_POST(self, request, user_id, device_id): - yield self.auth.get_user_by_req(request) + yield self.auth.get_user_by_req(request, allow_guest=True) timeout = parse_integer(request, "timeout", 10 * 1000) body = parse_json_object_from_request(request) result = yield self.e2e_keys_handler.query_devices(body, timeout) @@ -158,7 +158,7 @@ class KeyQueryServlet(RestServlet): @defer.inlineCallbacks def on_GET(self, request, user_id, device_id): - requester = yield self.auth.get_user_by_req(request) + requester = yield self.auth.get_user_by_req(request, allow_guest=True) timeout = parse_integer(request, "timeout", 10 * 1000) auth_user_id = requester.user.to_string() user_id = user_id if user_id else auth_user_id @@ -204,7 +204,7 @@ class OneTimeKeyServlet(RestServlet): @defer.inlineCallbacks def on_GET(self, request, user_id, device_id, algorithm): - yield self.auth.get_user_by_req(request) + yield self.auth.get_user_by_req(request, allow_guest=True) timeout = parse_integer(request, "timeout", 10 * 1000) result = yield self.e2e_keys_handler.claim_one_time_keys( {"one_time_keys": {user_id: {device_id: algorithm}}}, @@ -214,7 +214,7 @@ class OneTimeKeyServlet(RestServlet): @defer.inlineCallbacks def on_POST(self, request, user_id, device_id, algorithm): - yield self.auth.get_user_by_req(request) + yield self.auth.get_user_by_req(request, allow_guest=True) timeout = parse_integer(request, "timeout", 10 * 1000) body = parse_json_object_from_request(request) result = yield self.e2e_keys_handler.claim_one_time_keys( diff --git a/synapse/rest/client/v2_alpha/register.py b/synapse/rest/client/v2_alpha/register.py index 16a45610a5..bc2ec95ddd 100644 --- a/synapse/rest/client/v2_alpha/register.py +++ b/synapse/rest/client/v2_alpha/register.py @@ -15,6 +15,7 @@ from twisted.internet import defer +import synapse from synapse.api.auth import get_access_token_from_request, has_access_token from synapse.api.constants import LoginType from synapse.api.errors import SynapseError, Codes, UnrecognizedRequestError @@ -100,12 +101,14 @@ class RegisterRestServlet(RestServlet): def on_POST(self, request): yield run_on_reactor() + body = parse_json_object_from_request(request) + kind = "user" if "kind" in request.args: kind = request.args["kind"][0] if kind == "guest": - ret = yield self._do_guest_registration() + ret = yield self._do_guest_registration(body) defer.returnValue(ret) return elif kind != "user": @@ -113,8 +116,6 @@ class RegisterRestServlet(RestServlet): "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 @@ -420,13 +421,22 @@ class RegisterRestServlet(RestServlet): ) @defer.inlineCallbacks - def _do_guest_registration(self): + def _do_guest_registration(self, params): 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 ) + + # we don't allow guests to specify their own device_id, because + # we have nowhere to store it. + device_id = synapse.api.auth.GUEST_DEVICE_ID + initial_display_name = params.get("initial_device_display_name") + self.device_handler.check_device_registered( + user_id, device_id, initial_display_name + ) + access_token = self.auth_handler.generate_access_token( user_id, ["guest = true"] ) @@ -434,6 +444,7 @@ class RegisterRestServlet(RestServlet): # so long as we don't return a refresh_token here. defer.returnValue((200, { "user_id": user_id, + "device_id": device_id, "access_token": access_token, "home_server": self.hs.hostname, })) diff --git a/synapse/rest/client/v2_alpha/sendtodevice.py b/synapse/rest/client/v2_alpha/sendtodevice.py index ac660669f3..d607bd2970 100644 --- a/synapse/rest/client/v2_alpha/sendtodevice.py +++ b/synapse/rest/client/v2_alpha/sendtodevice.py @@ -50,7 +50,7 @@ class SendToDeviceRestServlet(servlet.RestServlet): @defer.inlineCallbacks def _put(self, request, message_type, txn_id): - requester = yield self.auth.get_user_by_req(request) + requester = yield self.auth.get_user_by_req(request, allow_guest=True) content = parse_json_object_from_request(request) |