516 lines
		
	
	
		
			18 KiB
		
	
	
	
		
			Python
		
	
	
			
		
		
	
	
			516 lines
		
	
	
		
			18 KiB
		
	
	
	
		
			Python
		
	
	
# -*- coding: utf-8 -*-
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# Copyright 2016 OpenMarket Ltd
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# Copyright 2017 New Vector Ltd
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# Copyright 2019 Matrix.org Foundation C.I.C.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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#     http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import copy
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import mock
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from twisted.internet import defer
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import synapse.api.errors
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import synapse.handlers.e2e_room_keys
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import synapse.storage
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from synapse.api import errors
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from tests import unittest, utils
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# sample room_key data for use in the tests
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room_keys = {
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    "rooms": {
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        "!abc:matrix.org": {
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            "sessions": {
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                "c0ff33": {
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                    "first_message_index": 1,
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                    "forwarded_count": 1,
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                    "is_verified": False,
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                    "session_data": "SSBBTSBBIEZJU0gK",
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                }
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            }
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        }
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    }
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}
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class E2eRoomKeysHandlerTestCase(unittest.TestCase):
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    def __init__(self, *args, **kwargs):
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        super(E2eRoomKeysHandlerTestCase, self).__init__(*args, **kwargs)
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        self.hs = None  # type: synapse.server.HomeServer
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        self.handler = None  # type: synapse.handlers.e2e_keys.E2eRoomKeysHandler
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    @defer.inlineCallbacks
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    def setUp(self):
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        self.hs = yield utils.setup_test_homeserver(
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            self.addCleanup, handlers=None, replication_layer=mock.Mock()
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        )
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        self.handler = synapse.handlers.e2e_room_keys.E2eRoomKeysHandler(self.hs)
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        self.local_user = "@boris:" + self.hs.hostname
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    @defer.inlineCallbacks
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    def test_get_missing_current_version_info(self):
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        """Check that we get a 404 if we ask for info about the current version
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        if there is no version.
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        """
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        res = None
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        try:
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            yield self.handler.get_version_info(self.local_user)
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        except errors.SynapseError as e:
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            res = e.code
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        self.assertEqual(res, 404)
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    @defer.inlineCallbacks
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    def test_get_missing_version_info(self):
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        """Check that we get a 404 if we ask for info about a specific version
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        if it doesn't exist.
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        """
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        res = None
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        try:
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            yield self.handler.get_version_info(self.local_user, "bogus_version")
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        except errors.SynapseError as e:
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            res = e.code
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        self.assertEqual(res, 404)
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    @defer.inlineCallbacks
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    def test_create_version(self):
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        """Check that we can create and then retrieve versions.
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        """
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        res = yield self.handler.create_version(
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            self.local_user,
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            {"algorithm": "m.megolm_backup.v1", "auth_data": "first_version_auth_data"},
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        )
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        self.assertEqual(res, "1")
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        # check we can retrieve it as the current version
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        res = yield self.handler.get_version_info(self.local_user)
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        version_etag = res["etag"]
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        del res["etag"]
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        self.assertDictEqual(
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            res,
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            {
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                "version": "1",
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                "algorithm": "m.megolm_backup.v1",
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                "auth_data": "first_version_auth_data",
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                "count": 0,
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            },
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        )
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        # check we can retrieve it as a specific version
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        res = yield self.handler.get_version_info(self.local_user, "1")
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        self.assertEqual(res["etag"], version_etag)
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        del res["etag"]
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        self.assertDictEqual(
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            res,
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            {
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                "version": "1",
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                "algorithm": "m.megolm_backup.v1",
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                "auth_data": "first_version_auth_data",
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                "count": 0,
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            },
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        )
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        # upload a new one...
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        res = yield self.handler.create_version(
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            self.local_user,
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            {
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                "algorithm": "m.megolm_backup.v1",
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                "auth_data": "second_version_auth_data",
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            },
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        )
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        self.assertEqual(res, "2")
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        # check we can retrieve it as the current version
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        res = yield self.handler.get_version_info(self.local_user)
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        del res["etag"]
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        self.assertDictEqual(
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            res,
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            {
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                "version": "2",
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                "algorithm": "m.megolm_backup.v1",
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                "auth_data": "second_version_auth_data",
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                "count": 0,
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            },
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        )
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    @defer.inlineCallbacks
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    def test_update_version(self):
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        """Check that we can update versions.
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        """
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        version = yield self.handler.create_version(
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            self.local_user,
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            {"algorithm": "m.megolm_backup.v1", "auth_data": "first_version_auth_data"},
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        )
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        self.assertEqual(version, "1")
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        res = yield self.handler.update_version(
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            self.local_user,
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            version,
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            {
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                "algorithm": "m.megolm_backup.v1",
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                "auth_data": "revised_first_version_auth_data",
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                "version": version,
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            },
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        )
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        self.assertDictEqual(res, {})
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        # check we can retrieve it as the current version
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        res = yield self.handler.get_version_info(self.local_user)
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        del res["etag"]
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        self.assertDictEqual(
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            res,
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            {
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                "algorithm": "m.megolm_backup.v1",
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                "auth_data": "revised_first_version_auth_data",
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                "version": version,
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                "count": 0,
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            },
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        )
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    @defer.inlineCallbacks
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    def test_update_missing_version(self):
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        """Check that we get a 404 on updating nonexistent versions
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        """
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        res = None
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        try:
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            yield self.handler.update_version(
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                self.local_user,
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                "1",
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                {
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                    "algorithm": "m.megolm_backup.v1",
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                    "auth_data": "revised_first_version_auth_data",
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                    "version": "1",
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                },
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            )
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        except errors.SynapseError as e:
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            res = e.code
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        self.assertEqual(res, 404)
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    @defer.inlineCallbacks
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    def test_update_omitted_version(self):
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        """Check that the update succeeds if the version is missing from the body
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        """
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        version = yield self.handler.create_version(
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            self.local_user,
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            {"algorithm": "m.megolm_backup.v1", "auth_data": "first_version_auth_data"},
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        )
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        self.assertEqual(version, "1")
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        yield self.handler.update_version(
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            self.local_user,
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            version,
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            {
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                "algorithm": "m.megolm_backup.v1",
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                "auth_data": "revised_first_version_auth_data",
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            },
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        )
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        # check we can retrieve it as the current version
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        res = yield self.handler.get_version_info(self.local_user)
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        del res["etag"]  # etag is opaque, so don't test its contents
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        self.assertDictEqual(
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            res,
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            {
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                "algorithm": "m.megolm_backup.v1",
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                "auth_data": "revised_first_version_auth_data",
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                "version": version,
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                "count": 0,
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            },
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        )
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    @defer.inlineCallbacks
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    def test_update_bad_version(self):
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        """Check that we get a 400 if the version in the body doesn't match
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        """
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        version = yield self.handler.create_version(
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            self.local_user,
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            {"algorithm": "m.megolm_backup.v1", "auth_data": "first_version_auth_data"},
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        )
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        self.assertEqual(version, "1")
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        res = None
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        try:
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            yield self.handler.update_version(
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                self.local_user,
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                version,
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                {
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                    "algorithm": "m.megolm_backup.v1",
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                    "auth_data": "revised_first_version_auth_data",
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                    "version": "incorrect",
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                },
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            )
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        except errors.SynapseError as e:
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            res = e.code
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        self.assertEqual(res, 400)
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    @defer.inlineCallbacks
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    def test_delete_missing_version(self):
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        """Check that we get a 404 on deleting nonexistent versions
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        """
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        res = None
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        try:
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            yield self.handler.delete_version(self.local_user, "1")
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        except errors.SynapseError as e:
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            res = e.code
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        self.assertEqual(res, 404)
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    @defer.inlineCallbacks
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    def test_delete_missing_current_version(self):
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        """Check that we get a 404 on deleting nonexistent current version
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        """
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        res = None
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        try:
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            yield self.handler.delete_version(self.local_user)
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        except errors.SynapseError as e:
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            res = e.code
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        self.assertEqual(res, 404)
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    @defer.inlineCallbacks
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    def test_delete_version(self):
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        """Check that we can create and then delete versions.
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        """
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        res = yield self.handler.create_version(
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            self.local_user,
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            {"algorithm": "m.megolm_backup.v1", "auth_data": "first_version_auth_data"},
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        )
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        self.assertEqual(res, "1")
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        # check we can delete it
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        yield self.handler.delete_version(self.local_user, "1")
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        # check that it's gone
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        res = None
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        try:
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            yield self.handler.get_version_info(self.local_user, "1")
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        except errors.SynapseError as e:
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            res = e.code
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        self.assertEqual(res, 404)
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    @defer.inlineCallbacks
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    def test_get_missing_backup(self):
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        """Check that we get a 404 on querying missing backup
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        """
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        res = None
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        try:
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            yield self.handler.get_room_keys(self.local_user, "bogus_version")
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        except errors.SynapseError as e:
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            res = e.code
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        self.assertEqual(res, 404)
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    @defer.inlineCallbacks
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    def test_get_missing_room_keys(self):
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        """Check we get an empty response from an empty backup
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        """
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        version = yield self.handler.create_version(
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            self.local_user,
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            {"algorithm": "m.megolm_backup.v1", "auth_data": "first_version_auth_data"},
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        )
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        self.assertEqual(version, "1")
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        res = yield self.handler.get_room_keys(self.local_user, version)
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        self.assertDictEqual(res, {"rooms": {}})
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    # TODO: test the locking semantics when uploading room_keys,
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    # although this is probably best done in sytest
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    @defer.inlineCallbacks
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    def test_upload_room_keys_no_versions(self):
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        """Check that we get a 404 on uploading keys when no versions are defined
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        """
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        res = None
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        try:
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            yield self.handler.upload_room_keys(
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                self.local_user, "no_version", room_keys
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            )
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        except errors.SynapseError as e:
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            res = e.code
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        self.assertEqual(res, 404)
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    @defer.inlineCallbacks
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    def test_upload_room_keys_bogus_version(self):
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        """Check that we get a 404 on uploading keys when an nonexistent version
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        is specified
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        """
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        version = yield self.handler.create_version(
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            self.local_user,
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            {"algorithm": "m.megolm_backup.v1", "auth_data": "first_version_auth_data"},
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        )
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        self.assertEqual(version, "1")
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        res = None
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        try:
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            yield self.handler.upload_room_keys(
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                self.local_user, "bogus_version", room_keys
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            )
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        except errors.SynapseError as e:
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            res = e.code
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        self.assertEqual(res, 404)
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    @defer.inlineCallbacks
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    def test_upload_room_keys_wrong_version(self):
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        """Check that we get a 403 on uploading keys for an old version
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        """
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        version = yield self.handler.create_version(
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            self.local_user,
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            {"algorithm": "m.megolm_backup.v1", "auth_data": "first_version_auth_data"},
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        )
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        self.assertEqual(version, "1")
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        version = yield self.handler.create_version(
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            self.local_user,
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            {
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                "algorithm": "m.megolm_backup.v1",
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                "auth_data": "second_version_auth_data",
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            },
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        )
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        self.assertEqual(version, "2")
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        res = None
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        try:
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            yield self.handler.upload_room_keys(self.local_user, "1", room_keys)
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        except errors.SynapseError as e:
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            res = e.code
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        self.assertEqual(res, 403)
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    @defer.inlineCallbacks
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    def test_upload_room_keys_insert(self):
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        """Check that we can insert and retrieve keys for a session
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        """
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        version = yield self.handler.create_version(
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            self.local_user,
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            {"algorithm": "m.megolm_backup.v1", "auth_data": "first_version_auth_data"},
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        )
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        self.assertEqual(version, "1")
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        yield self.handler.upload_room_keys(self.local_user, version, room_keys)
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        res = yield self.handler.get_room_keys(self.local_user, version)
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        self.assertDictEqual(res, room_keys)
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        # check getting room_keys for a given room
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        res = yield self.handler.get_room_keys(
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            self.local_user, version, room_id="!abc:matrix.org"
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        )
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        self.assertDictEqual(res, room_keys)
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        # check getting room_keys for a given session_id
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        res = yield self.handler.get_room_keys(
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            self.local_user, version, room_id="!abc:matrix.org", session_id="c0ff33"
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        )
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        self.assertDictEqual(res, room_keys)
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    @defer.inlineCallbacks
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    def test_upload_room_keys_merge(self):
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        """Check that we can upload a new room_key for an existing session and
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        have it correctly merged"""
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        version = yield self.handler.create_version(
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            self.local_user,
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            {"algorithm": "m.megolm_backup.v1", "auth_data": "first_version_auth_data"},
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        )
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        self.assertEqual(version, "1")
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        yield self.handler.upload_room_keys(self.local_user, version, room_keys)
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        # get the etag to compare to future versions
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        res = yield self.handler.get_version_info(self.local_user)
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        backup_etag = res["etag"]
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        self.assertEqual(res["count"], 1)
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        new_room_keys = copy.deepcopy(room_keys)
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        new_room_key = new_room_keys["rooms"]["!abc:matrix.org"]["sessions"]["c0ff33"]
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        # test that increasing the message_index doesn't replace the existing session
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        new_room_key["first_message_index"] = 2
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        new_room_key["session_data"] = "new"
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        yield self.handler.upload_room_keys(self.local_user, version, new_room_keys)
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        res = yield self.handler.get_room_keys(self.local_user, version)
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        self.assertEqual(
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            res["rooms"]["!abc:matrix.org"]["sessions"]["c0ff33"]["session_data"],
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            "SSBBTSBBIEZJU0gK",
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						|
        )
 | 
						|
 | 
						|
        # the etag should be the same since the session did not change
 | 
						|
        res = yield self.handler.get_version_info(self.local_user)
 | 
						|
        self.assertEqual(res["etag"], backup_etag)
 | 
						|
 | 
						|
        # test that marking the session as verified however /does/ replace it
 | 
						|
        new_room_key["is_verified"] = True
 | 
						|
        yield self.handler.upload_room_keys(self.local_user, version, new_room_keys)
 | 
						|
 | 
						|
        res = yield self.handler.get_room_keys(self.local_user, version)
 | 
						|
        self.assertEqual(
 | 
						|
            res["rooms"]["!abc:matrix.org"]["sessions"]["c0ff33"]["session_data"], "new"
 | 
						|
        )
 | 
						|
 | 
						|
        # the etag should NOT be equal now, since the key changed
 | 
						|
        res = yield self.handler.get_version_info(self.local_user)
 | 
						|
        self.assertNotEqual(res["etag"], backup_etag)
 | 
						|
        backup_etag = res["etag"]
 | 
						|
 | 
						|
        # test that a session with a higher forwarded_count doesn't replace one
 | 
						|
        # with a lower forwarding count
 | 
						|
        new_room_key["forwarded_count"] = 2
 | 
						|
        new_room_key["session_data"] = "other"
 | 
						|
        yield self.handler.upload_room_keys(self.local_user, version, new_room_keys)
 | 
						|
 | 
						|
        res = yield self.handler.get_room_keys(self.local_user, version)
 | 
						|
        self.assertEqual(
 | 
						|
            res["rooms"]["!abc:matrix.org"]["sessions"]["c0ff33"]["session_data"], "new"
 | 
						|
        )
 | 
						|
 | 
						|
        # the etag should be the same since the session did not change
 | 
						|
        res = yield self.handler.get_version_info(self.local_user)
 | 
						|
        self.assertEqual(res["etag"], backup_etag)
 | 
						|
 | 
						|
        # TODO: check edge cases as well as the common variations here
 | 
						|
 | 
						|
    @defer.inlineCallbacks
 | 
						|
    def test_delete_room_keys(self):
 | 
						|
        """Check that we can insert and delete keys for a session
 | 
						|
        """
 | 
						|
        version = yield self.handler.create_version(
 | 
						|
            self.local_user,
 | 
						|
            {"algorithm": "m.megolm_backup.v1", "auth_data": "first_version_auth_data"},
 | 
						|
        )
 | 
						|
        self.assertEqual(version, "1")
 | 
						|
 | 
						|
        # check for bulk-delete
 | 
						|
        yield self.handler.upload_room_keys(self.local_user, version, room_keys)
 | 
						|
        yield self.handler.delete_room_keys(self.local_user, version)
 | 
						|
        res = yield self.handler.get_room_keys(
 | 
						|
            self.local_user, version, room_id="!abc:matrix.org", session_id="c0ff33"
 | 
						|
        )
 | 
						|
        self.assertDictEqual(res, {"rooms": {}})
 | 
						|
 | 
						|
        # check for bulk-delete per room
 | 
						|
        yield self.handler.upload_room_keys(self.local_user, version, room_keys)
 | 
						|
        yield self.handler.delete_room_keys(
 | 
						|
            self.local_user, version, room_id="!abc:matrix.org"
 | 
						|
        )
 | 
						|
        res = yield self.handler.get_room_keys(
 | 
						|
            self.local_user, version, room_id="!abc:matrix.org", session_id="c0ff33"
 | 
						|
        )
 | 
						|
        self.assertDictEqual(res, {"rooms": {}})
 | 
						|
 | 
						|
        # check for bulk-delete per session
 | 
						|
        yield self.handler.upload_room_keys(self.local_user, version, room_keys)
 | 
						|
        yield self.handler.delete_room_keys(
 | 
						|
            self.local_user, version, room_id="!abc:matrix.org", session_id="c0ff33"
 | 
						|
        )
 | 
						|
        res = yield self.handler.get_room_keys(
 | 
						|
            self.local_user, version, room_id="!abc:matrix.org", session_id="c0ff33"
 | 
						|
        )
 | 
						|
        self.assertDictEqual(res, {"rooms": {}})
 |