diff options
Diffstat (limited to 'synapse')
| -rw-r--r-- | synapse/api/auth.py | 6 | ||||
| -rw-r--r-- | synapse/config/registration.py | 4 | ||||
| -rw-r--r-- | synapse/handlers/auth.py | 56 | ||||
| -rw-r--r-- | synapse/handlers/register.py | 19 | ||||
| -rw-r--r-- | synapse/python_dependencies.py | 1 | ||||
| -rw-r--r-- | synapse/rest/client/v1/login.py | 8 | ||||
| -rw-r--r-- | synapse/rest/client/v2_alpha/__init__.py | 2 | ||||
| -rw-r--r-- | synapse/rest/client/v2_alpha/tokenrefresh.py | 56 | ||||
| -rw-r--r-- | synapse/storage/__init__.py | 2 | ||||
| -rw-r--r-- | synapse/storage/_base.py | 1 | ||||
| -rw-r--r-- | synapse/storage/registration.py | 68 | ||||
| -rw-r--r-- | synapse/storage/schema/delta/23/refresh_tokens.sql | 21 |
12 files changed, 216 insertions, 28 deletions
diff --git a/synapse/api/auth.py b/synapse/api/auth.py index 1e3b0fbfb7..3d9237ccc3 100644 --- a/synapse/api/auth.py +++ b/synapse/api/auth.py @@ -361,7 +361,7 @@ class Auth(object): except KeyError: pass # normal users won't have the user_id query parameter set. - user_info = yield self.get_user_by_token(access_token) + user_info = yield self.get_user_by_access_token(access_token) user = user_info["user"] device_id = user_info["device_id"] token_id = user_info["token_id"] @@ -390,7 +390,7 @@ class Auth(object): ) @defer.inlineCallbacks - def get_user_by_token(self, token): + def get_user_by_access_token(self, token): """ Get a registered user's ID. Args: @@ -401,7 +401,7 @@ class Auth(object): Raises: AuthError if no user by that token exists or the token is invalid. """ - ret = yield self.store.get_user_by_token(token) + ret = yield self.store.get_user_by_access_token(token) if not ret: raise AuthError( self.TOKEN_NOT_FOUND_HTTP_STATUS, "Unrecognised access token.", diff --git a/synapse/config/registration.py b/synapse/config/registration.py index 67e780864e..62de4b399f 100644 --- a/synapse/config/registration.py +++ b/synapse/config/registration.py @@ -32,9 +32,11 @@ class RegistrationConfig(Config): ) self.registration_shared_secret = config.get("registration_shared_secret") + self.macaroon_secret_key = config.get("macaroon_secret_key") def default_config(self, config_dir, server_name): registration_shared_secret = random_string_with_symbols(50) + macaroon_secret_key = random_string_with_symbols(50) return """\ ## Registration ## @@ -44,6 +46,8 @@ class RegistrationConfig(Config): # If set, allows registration by anyone who also has the shared # secret, even if registration is otherwise disabled. registration_shared_secret: "%(registration_shared_secret)s" + + macaroon_secret_key: "%(macaroon_secret_key)s" """ % locals() def add_arguments(self, parser): diff --git a/synapse/handlers/auth.py b/synapse/handlers/auth.py index ff2c66f442..af602bee44 100644 --- a/synapse/handlers/auth.py +++ b/synapse/handlers/auth.py @@ -26,6 +26,7 @@ from twisted.web.client import PartialDownloadError import logging import bcrypt +import pymacaroons import simplejson import synapse.util.stringutils as stringutils @@ -278,18 +279,18 @@ class AuthHandler(BaseHandler): user_id (str): User ID password (str): Password Returns: - The access token for the user's session. + 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. """ yield self._check_password(user_id, password) - - reg_handler = self.hs.get_handlers().registration_handler - access_token = reg_handler.generate_token(user_id) logger.info("Logging in user %s", user_id) - yield self.store.add_access_token_to_user(user_id, access_token) - defer.returnValue(access_token) + access_token = yield self.issue_access_token(user_id) + refresh_token = yield self.issue_refresh_token(user_id) + defer.returnValue((access_token, refresh_token)) @defer.inlineCallbacks def _check_password(self, user_id, password): @@ -305,6 +306,49 @@ class AuthHandler(BaseHandler): raise LoginError(403, "", errcode=Codes.FORBIDDEN) @defer.inlineCallbacks + def issue_access_token(self, user_id): + access_token = self.generate_access_token(user_id) + yield self.store.add_access_token_to_user(user_id, access_token) + defer.returnValue(access_token) + + @defer.inlineCallbacks + def issue_refresh_token(self, user_id): + refresh_token = self.generate_refresh_token(user_id) + yield self.store.add_refresh_token_to_user(user_id, refresh_token) + defer.returnValue(refresh_token) + + def generate_access_token(self, user_id): + macaroon = pymacaroons.Macaroon( + location = self.hs.config.server_name, + identifier = "key", + key = self.hs.config.macaroon_secret_key) + macaroon.add_first_party_caveat("gen = 1") + macaroon.add_first_party_caveat("user_id = %s" % (user_id,)) + macaroon.add_first_party_caveat("type = access") + now = self.hs.get_clock().time_msec() + expiry = now + (60 * 60 * 1000) + macaroon.add_first_party_caveat("time < %d" % (expiry,)) + + 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_base_macaroon(self, user_id): + macaroon = pymacaroons.Macaroon( + location = self.hs.config.server_name, + identifier = "key", + key = self.hs.config.macaroon_secret_key) + macaroon.add_first_party_caveat("gen = 1") + macaroon.add_first_party_caveat("user_id = %s" % (user_id,)) + return macaroon + + @defer.inlineCallbacks def set_password(self, user_id, newpassword): password_hash = bcrypt.hashpw(newpassword, bcrypt.gensalt()) diff --git a/synapse/handlers/register.py b/synapse/handlers/register.py index 39392d9fdd..3d1b6531c2 100644 --- a/synapse/handlers/register.py +++ b/synapse/handlers/register.py @@ -25,7 +25,6 @@ import synapse.util.stringutils as stringutils from synapse.util.async import run_on_reactor from synapse.http.client import CaptchaServerHttpClient -import base64 import bcrypt import logging import urllib @@ -91,7 +90,7 @@ class RegistrationHandler(BaseHandler): user = UserID(localpart, self.hs.hostname) user_id = user.to_string() - token = self.generate_token(user_id) + token = self.auth_handler().generate_access_token(user_id) yield self.store.register( user_id=user_id, token=token, @@ -111,7 +110,7 @@ class RegistrationHandler(BaseHandler): user_id = user.to_string() yield self.check_user_id_is_valid(user_id) - token = self.generate_token(user_id) + token = self.auth_handler().generate_access_token(user_id) yield self.store.register( user_id=user_id, token=token, @@ -161,7 +160,7 @@ class RegistrationHandler(BaseHandler): 400, "Invalid user localpart for this application service.", errcode=Codes.EXCLUSIVE ) - token = self.generate_token(user_id) + token = self.auth_handler().generate_access_token(user_id) yield self.store.register( user_id=user_id, token=token, @@ -208,7 +207,7 @@ class RegistrationHandler(BaseHandler): user_id = user.to_string() yield self.check_user_id_is_valid(user_id) - token = self.generate_token(user_id) + token = self.auth_handler().generate_access_token(user_id) try: yield self.store.register( user_id=user_id, @@ -273,13 +272,6 @@ class RegistrationHandler(BaseHandler): errcode=Codes.EXCLUSIVE ) - def generate_token(self, user_id): - # urlsafe variant uses _ and - so use . as the separator and replace - # all =s with .s so http clients don't quote =s when it is used as - # query params. - return (base64.urlsafe_b64encode(user_id).replace('=', '.') + '.' + - stringutils.random_string(18)) - def _generate_user_id(self): return "-" + stringutils.random_string(18) @@ -322,3 +314,6 @@ class RegistrationHandler(BaseHandler): } ) defer.returnValue(data) + + def auth_handler(self): + return self.hs.get_handlers().auth_handler diff --git a/synapse/python_dependencies.py b/synapse/python_dependencies.py index fa06480ad1..fa24199377 100644 --- a/synapse/python_dependencies.py +++ b/synapse/python_dependencies.py @@ -33,6 +33,7 @@ REQUIREMENTS = { "ujson": ["ujson"], "blist": ["blist"], "pysaml2": ["saml2"], + "pymacaroons-pynacl": ["pymacaroons"], } CONDITIONAL_REQUIREMENTS = { "web_client": { diff --git a/synapse/rest/client/v1/login.py b/synapse/rest/client/v1/login.py index 0d5eafd0fa..67323a16bb 100644 --- a/synapse/rest/client/v1/login.py +++ b/synapse/rest/client/v1/login.py @@ -85,13 +85,15 @@ class LoginRestServlet(ClientV1RestServlet): user_id = UserID.create( user_id, self.hs.hostname).to_string() - token = yield self.handlers.auth_handler.login_with_password( + auth_handler = self.handlers.auth_handler + access_token, refresh_token = yield auth_handler.login_with_password( user_id=user_id, password=login_submission["password"]) result = { - "user_id": user_id, # may have changed - "access_token": token, + "user_id": login_submission["user"], # may have changed + "access_token": access_token, + "refresh_token": refresh_token, "home_server": self.hs.hostname, } diff --git a/synapse/rest/client/v2_alpha/__init__.py b/synapse/rest/client/v2_alpha/__init__.py index 33f961e898..5831ff0e62 100644 --- a/synapse/rest/client/v2_alpha/__init__.py +++ b/synapse/rest/client/v2_alpha/__init__.py @@ -21,6 +21,7 @@ from . import ( auth, receipts, keys, + tokenrefresh, ) from synapse.http.server import JsonResource @@ -42,3 +43,4 @@ class ClientV2AlphaRestResource(JsonResource): auth.register_servlets(hs, client_resource) receipts.register_servlets(hs, client_resource) keys.register_servlets(hs, client_resource) + tokenrefresh.register_servlets(hs, client_resource) diff --git a/synapse/rest/client/v2_alpha/tokenrefresh.py b/synapse/rest/client/v2_alpha/tokenrefresh.py new file mode 100644 index 0000000000..901e777983 --- /dev/null +++ b/synapse/rest/client/v2_alpha/tokenrefresh.py @@ -0,0 +1,56 @@ +# -*- coding: utf-8 -*- +# Copyright 2015 OpenMarket Ltd +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# 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 twisted.internet import defer + +from synapse.api.errors import AuthError, StoreError, SynapseError +from synapse.http.servlet import RestServlet + +from ._base import client_v2_pattern, parse_json_dict_from_request + + +class TokenRefreshRestServlet(RestServlet): + """ + Exchanges refresh tokens for a pair of an access token and a new refresh + token. + """ + PATTERN = client_v2_pattern("/tokenrefresh") + + 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_dict_from_request(request) + try: + old_refresh_token = body["refresh_token"] + auth_handler = self.hs.get_handlers().auth_handler + (user_id, new_refresh_token) = yield self.store.exchange_refresh_token( + old_refresh_token, auth_handler.generate_refresh_token) + new_access_token = yield auth_handler.issue_access_token(user_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") + + +def register_servlets(hs, http_server): + TokenRefreshRestServlet(hs).register(http_server) diff --git a/synapse/storage/__init__.py b/synapse/storage/__init__.py index f154b1c8ae..53673b3bf5 100644 --- a/synapse/storage/__init__.py +++ b/synapse/storage/__init__.py @@ -54,7 +54,7 @@ logger = logging.getLogger(__name__) # Remember to update this number every time a change is made to database # schema files, so the users will be informed on server restarts. -SCHEMA_VERSION = 22 +SCHEMA_VERSION = 23 dir_path = os.path.abspath(os.path.dirname(__file__)) diff --git a/synapse/storage/_base.py b/synapse/storage/_base.py index 1444767a52..ce71389f02 100644 --- a/synapse/storage/_base.py +++ b/synapse/storage/_base.py @@ -181,6 +181,7 @@ class SQLBaseStore(object): self._transaction_id_gen = IdGenerator("sent_transactions", "id", self) self._state_groups_id_gen = IdGenerator("state_groups", "id", self) self._access_tokens_id_gen = IdGenerator("access_tokens", "id", self) + self._refresh_tokens_id_gen = IdGenerator("refresh_tokens", "id", self) self._pushers_id_gen = IdGenerator("pushers", "id", self) self._push_rule_id_gen = IdGenerator("push_rules", "id", self) self._push_rules_enable_id_gen = IdGenerator("push_rules_enable", "id", self) diff --git a/synapse/storage/registration.py b/synapse/storage/registration.py index bf803f2c6e..f632306688 100644 --- a/synapse/storage/registration.py +++ b/synapse/storage/registration.py @@ -51,6 +51,28 @@ class RegistrationStore(SQLBaseStore): ) @defer.inlineCallbacks + def add_refresh_token_to_user(self, user_id, token): + """Adds a refresh token for the given user. + + Args: + user_id (str): The user ID. + token (str): The new refresh token to add. + Raises: + StoreError if there was a problem adding this. + """ + next_id = yield self._refresh_tokens_id_gen.get_next() + + yield self._simple_insert( + "refresh_tokens", + { + "id": next_id, + "user_id": user_id, + "token": token + }, + desc="add_refresh_token_to_user", + ) + + @defer.inlineCallbacks def register(self, user_id, token, password_hash): """Attempts to register an account. @@ -132,10 +154,10 @@ class RegistrationStore(SQLBaseStore): user_id ) for r in rows: - self.get_user_by_token.invalidate((r,)) + self.get_user_by_access_token.invalidate((r,)) @cached() - def get_user_by_token(self, token): + def get_user_by_access_token(self, token): """Get a user from the given access token. Args: @@ -147,11 +169,51 @@ class RegistrationStore(SQLBaseStore): StoreError if no user was found. """ return self.runInteraction( - "get_user_by_token", + "get_user_by_access_token", self._query_for_auth, token ) + def exchange_refresh_token(self, refresh_token, token_generator): + """Exchange a refresh token for a new access token and refresh token. + + Doing so invalidates the old refresh token - refresh tokens are single + use. + + Args: + 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, refresh_token) + 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 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"] + + # 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 + @defer.inlineCallbacks def is_server_admin(self, user): res = yield self._simple_select_one_onecol( diff --git a/synapse/storage/schema/delta/23/refresh_tokens.sql b/synapse/storage/schema/delta/23/refresh_tokens.sql new file mode 100644 index 0000000000..46839e016c --- /dev/null +++ b/synapse/storage/schema/delta/23/refresh_tokens.sql @@ -0,0 +1,21 @@ +/* Copyright 2015 OpenMarket Ltd + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * 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. + */ + +CREATE TABLE IF NOT EXISTS refresh_tokens( + id INTEGER PRIMARY KEY AUTOINCREMENT, + token TEXT NOT NULL, + user_id TEXT NOT NULL, + UNIQUE (token) +); |