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path: root/tests/rest/admin/test_admin.py
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# -*- coding: utf-8 -*-
# Copyright 2018 New Vector 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.

import hashlib
import hmac
import json

from mock import Mock

import synapse.rest.admin
from synapse.api.constants import UserTypes
from synapse.rest.client.v1 import events, login, room
from synapse.rest.client.v2_alpha import groups

from tests import unittest


class VersionTestCase(unittest.HomeserverTestCase):

    servlets = [
        synapse.rest.admin.register_servlets_for_client_rest_resource,
        login.register_servlets,
    ]

    url = '/_matrix/client/r0/admin/server_version'

    def test_version_string(self):
        self.register_user("admin", "pass", admin=True)
        self.admin_token = self.login("admin", "pass")

        request, channel = self.make_request("GET", self.url,
                                             access_token=self.admin_token)
        self.render(request)

        self.assertEqual(200, int(channel.result["code"]),
                         msg=channel.result["body"])
        self.assertEqual({'server_version', 'python_version'},
                         set(channel.json_body.keys()))

    def test_inaccessible_to_non_admins(self):
        self.register_user("unprivileged-user", "pass", admin=False)
        user_token = self.login("unprivileged-user", "pass")

        request, channel = self.make_request("GET", self.url,
                                             access_token=user_token)
        self.render(request)

        self.assertEqual(403, int(channel.result['code']),
                         msg=channel.result['body'])


class UserRegisterTestCase(unittest.HomeserverTestCase):

    servlets = [synapse.rest.admin.register_servlets_for_client_rest_resource]

    def make_homeserver(self, reactor, clock):

        self.url = "/_matrix/client/r0/admin/register"

        self.registration_handler = Mock()
        self.identity_handler = Mock()
        self.login_handler = Mock()
        self.device_handler = Mock()
        self.device_handler.check_device_registered = Mock(return_value="FAKE")

        self.datastore = Mock(return_value=Mock())
        self.datastore.get_current_state_deltas = Mock(return_value=[])

        self.secrets = Mock()

        self.hs = self.setup_test_homeserver()

        self.hs.config.registration_shared_secret = u"shared"

        self.hs.get_media_repository = Mock()
        self.hs.get_deactivate_account_handler = Mock()

        return self.hs

    def test_disabled(self):
        """
        If there is no shared secret, registration through this method will be
        prevented.
        """
        self.hs.config.registration_shared_secret = None

        request, channel = self.make_request("POST", self.url, b'{}')
        self.render(request)

        self.assertEqual(400, int(channel.result["code"]), msg=channel.result["body"])
        self.assertEqual(
            'Shared secret registration is not enabled', channel.json_body["error"]
        )

    def test_get_nonce(self):
        """
        Calling GET on the endpoint will return a randomised nonce, using the
        homeserver's secrets provider.
        """
        secrets = Mock()
        secrets.token_hex = Mock(return_value="abcd")

        self.hs.get_secrets = Mock(return_value=secrets)

        request, channel = self.make_request("GET", self.url)
        self.render(request)

        self.assertEqual(channel.json_body, {"nonce": "abcd"})

    def test_expired_nonce(self):
        """
        Calling GET on the endpoint will return a randomised nonce, which will
        only last for SALT_TIMEOUT (60s).
        """
        request, channel = self.make_request("GET", self.url)
        self.render(request)
        nonce = channel.json_body["nonce"]

        # 59 seconds
        self.reactor.advance(59)

        body = json.dumps({"nonce": nonce})
        request, channel = self.make_request("POST", self.url, body.encode('utf8'))
        self.render(request)

        self.assertEqual(400, int(channel.result["code"]), msg=channel.result["body"])
        self.assertEqual('username must be specified', channel.json_body["error"])

        # 61 seconds
        self.reactor.advance(2)

        request, channel = self.make_request("POST", self.url, body.encode('utf8'))
        self.render(request)

        self.assertEqual(400, int(channel.result["code"]), msg=channel.result["body"])
        self.assertEqual('unrecognised nonce', channel.json_body["error"])

    def test_register_incorrect_nonce(self):
        """
        Only the provided nonce can be used, as it's checked in the MAC.
        """
        request, channel = self.make_request("GET", self.url)
        self.render(request)
        nonce = channel.json_body["nonce"]

        want_mac = hmac.new(key=b"shared", digestmod=hashlib.sha1)
        want_mac.update(b"notthenonce\x00bob\x00abc123\x00admin")
        want_mac = want_mac.hexdigest()

        body = json.dumps(
            {
                "nonce": nonce,
                "username": "bob",
                "password": "abc123",
                "admin": True,
                "mac": want_mac,
            }
        )
        request, channel = self.make_request("POST", self.url, body.encode('utf8'))
        self.render(request)

        self.assertEqual(403, int(channel.result["code"]), msg=channel.result["body"])
        self.assertEqual("HMAC incorrect", channel.json_body["error"])

    def test_register_correct_nonce(self):
        """
        When the correct nonce is provided, and the right key is provided, the
        user is registered.
        """
        request, channel = self.make_request("GET", self.url)
        self.render(request)
        nonce = channel.json_body["nonce"]

        want_mac = hmac.new(key=b"shared", digestmod=hashlib.sha1)
        want_mac.update(
            nonce.encode('ascii') + b"\x00bob\x00abc123\x00admin\x00support"
        )
        want_mac = want_mac.hexdigest()

        body = json.dumps(
            {
                "nonce": nonce,
                "username": "bob",
                "password": "abc123",
                "admin": True,
                "user_type": UserTypes.SUPPORT,
                "mac": want_mac,
            }
        )
        request, channel = self.make_request("POST", self.url, body.encode('utf8'))
        self.render(request)

        self.assertEqual(200, int(channel.result["code"]), msg=channel.result["body"])
        self.assertEqual("@bob:test", channel.json_body["user_id"])

    def test_nonce_reuse(self):
        """
        A valid unrecognised nonce.
        """
        request, channel = self.make_request("GET", self.url)
        self.render(request)
        nonce = channel.json_body["nonce"]

        want_mac = hmac.new(key=b"shared", digestmod=hashlib.sha1)
        want_mac.update(
            nonce.encode('ascii') + b"\x00bob\x00abc123\x00admin"
        )
        want_mac = want_mac.hexdigest()

        body = json.dumps(
            {
                "nonce": nonce,
                "username": "bob",
                "password": "abc123",
                "admin": True,
                "mac": want_mac,
            }
        )
        request, channel = self.make_request("POST", self.url, body.encode('utf8'))
        self.render(request)

        self.assertEqual(200, int(channel.result["code"]), msg=channel.result["body"])
        self.assertEqual("@bob:test", channel.json_body["user_id"])

        # Now, try and reuse it
        request, channel = self.make_request("POST", self.url, body.encode('utf8'))
        self.render(request)

        self.assertEqual(400, int(channel.result["code"]), msg=channel.result["body"])
        self.assertEqual('unrecognised nonce', channel.json_body["error"])

    def test_missing_parts(self):
        """
        Synapse will complain if you don't give nonce, username, password, and
        mac.  Admin and user_types are optional.  Additional checks are done for length
        and type.
        """

        def nonce():
            request, channel = self.make_request("GET", self.url)
            self.render(request)
            return channel.json_body["nonce"]

        #
        # Nonce check
        #

        # Must be present
        body = json.dumps({})
        request, channel = self.make_request("POST", self.url, body.encode('utf8'))
        self.render(request)

        self.assertEqual(400, int(channel.result["code"]), msg=channel.result["body"])
        self.assertEqual('nonce must be specified', channel.json_body["error"])

        #
        # Username checks
        #

        # Must be present
        body = json.dumps({"nonce": nonce()})
        request, channel = self.make_request("POST", self.url, body.encode('utf8'))
        self.render(request)

        self.assertEqual(400, int(channel.result["code"]), msg=channel.result["body"])
        self.assertEqual('username must be specified', channel.json_body["error"])

        # Must be a string
        body = json.dumps({"nonce": nonce(), "username": 1234})
        request, channel = self.make_request("POST", self.url, body.encode('utf8'))
        self.render(request)

        self.assertEqual(400, int(channel.result["code"]), msg=channel.result["body"])
        self.assertEqual('Invalid username', channel.json_body["error"])

        # Must not have null bytes
        body = json.dumps({"nonce": nonce(), "username": u"abcd\u0000"})
        request, channel = self.make_request("POST", self.url, body.encode('utf8'))
        self.render(request)

        self.assertEqual(400, int(channel.result["code"]), msg=channel.result["body"])
        self.assertEqual('Invalid username', channel.json_body["error"])

        # Must not have null bytes
        body = json.dumps({"nonce": nonce(), "username": "a" * 1000})
        request, channel = self.make_request("POST", self.url, body.encode('utf8'))
        self.render(request)

        self.assertEqual(400, int(channel.result["code"]), msg=channel.result["body"])
        self.assertEqual('Invalid username', channel.json_body["error"])

        #
        # Password checks
        #

        # Must be present
        body = json.dumps({"nonce": nonce(), "username": "a"})
        request, channel = self.make_request("POST", self.url, body.encode('utf8'))
        self.render(request)

        self.assertEqual(400, int(channel.result["code"]), msg=channel.result["body"])
        self.assertEqual('password must be specified', channel.json_body["error"])

        # Must be a string
        body = json.dumps({"nonce": nonce(), "username": "a", "password": 1234})
        request, channel = self.make_request("POST", self.url, body.encode('utf8'))
        self.render(request)

        self.assertEqual(400, int(channel.result["code"]), msg=channel.result["body"])
        self.assertEqual('Invalid password', channel.json_body["error"])

        # Must not have null bytes
        body = json.dumps(
            {"nonce": nonce(), "username": "a", "password": u"abcd\u0000"}
        )
        request, channel = self.make_request("POST", self.url, body.encode('utf8'))
        self.render(request)

        self.assertEqual(400, int(channel.result["code"]), msg=channel.result["body"])
        self.assertEqual('Invalid password', channel.json_body["error"])

        # Super long
        body = json.dumps({"nonce": nonce(), "username": "a", "password": "A" * 1000})
        request, channel = self.make_request("POST", self.url, body.encode('utf8'))
        self.render(request)

        self.assertEqual(400, int(channel.result["code"]), msg=channel.result["body"])
        self.assertEqual('Invalid password', channel.json_body["error"])

        #
        # user_type check
        #

        # Invalid user_type
        body = json.dumps({
            "nonce": nonce(),
            "username": "a",
            "password": "1234",
            "user_type": "invalid"}
        )
        request, channel = self.make_request("POST", self.url, body.encode('utf8'))
        self.render(request)

        self.assertEqual(400, int(channel.result["code"]), msg=channel.result["body"])
        self.assertEqual('Invalid user type', channel.json_body["error"])


class ShutdownRoomTestCase(unittest.HomeserverTestCase):
    servlets = [
        synapse.rest.admin.register_servlets_for_client_rest_resource,
        login.register_servlets,
        events.register_servlets,
        room.register_servlets,
        room.register_deprecated_servlets,
    ]

    def prepare(self, reactor, clock, hs):
        self.event_creation_handler = hs.get_event_creation_handler()
        hs.config.user_consent_version = "1"

        consent_uri_builder = Mock()
        consent_uri_builder.build_user_consent_uri.return_value = (
            "http://example.com"
        )
        self.event_creation_handler._consent_uri_builder = consent_uri_builder

        self.store = hs.get_datastore()

        self.admin_user = self.register_user("admin", "pass", admin=True)
        self.admin_user_tok = self.login("admin", "pass")

        self.other_user = self.register_user("user", "pass")
        self.other_user_token = self.login("user", "pass")

        # Mark the admin user as having consented
        self.get_success(
            self.store.user_set_consent_version(self.admin_user, "1"),
        )

    def test_shutdown_room_consent(self):
        """Test that we can shutdown rooms with local users who have not
        yet accepted the privacy policy. This used to fail when we tried to
        force part the user from the old room.
        """
        self.event_creation_handler._block_events_without_consent_error = None

        room_id = self.helper.create_room_as(self.other_user, tok=self.other_user_token)

        # Assert one user in room
        users_in_room = self.get_success(
            self.store.get_users_in_room(room_id),
        )
        self.assertEqual([self.other_user], users_in_room)

        # Enable require consent to send events
        self.event_creation_handler._block_events_without_consent_error = "Error"

        # Assert that the user is getting consent error
        self.helper.send(
            room_id,
            body="foo", tok=self.other_user_token, expect_code=403,
        )

        # Test that the admin can still send shutdown
        url = "admin/shutdown_room/" + room_id
        request, channel = self.make_request(
            "POST",
            url.encode('ascii'),
            json.dumps({"new_room_user_id": self.admin_user}),
            access_token=self.admin_user_tok,
        )
        self.render(request)

        self.assertEqual(200, int(channel.result["code"]), msg=channel.result["body"])

        # Assert there is now no longer anyone in the room
        users_in_room = self.get_success(
            self.store.get_users_in_room(room_id),
        )
        self.assertEqual([], users_in_room)

    @unittest.DEBUG
    def test_shutdown_room_block_peek(self):
        """Test that a world_readable room can no longer be peeked into after
        it has been shut down.
        """

        self.event_creation_handler._block_events_without_consent_error = None

        room_id = self.helper.create_room_as(self.other_user, tok=self.other_user_token)

        # Enable world readable
        url = "rooms/%s/state/m.room.history_visibility" % (room_id,)
        request, channel = self.make_request(
            "PUT",
            url.encode('ascii'),
            json.dumps({"history_visibility": "world_readable"}),
            access_token=self.other_user_token,
        )
        self.render(request)
        self.assertEqual(200, int(channel.result["code"]), msg=channel.result["body"])

        # Test that the admin can still send shutdown
        url = "admin/shutdown_room/" + room_id
        request, channel = self.make_request(
            "POST",
            url.encode('ascii'),
            json.dumps({"new_room_user_id": self.admin_user}),
            access_token=self.admin_user_tok,
        )
        self.render(request)

        self.assertEqual(200, int(channel.result["code"]), msg=channel.result["body"])

        # Assert we can no longer peek into the room
        self._assert_peek(room_id, expect_code=403)

    def _assert_peek(self, room_id, expect_code):
        """Assert that the admin user can (or cannot) peek into the room.
        """

        url = "rooms/%s/initialSync" % (room_id,)
        request, channel = self.make_request(
            "GET",
            url.encode('ascii'),
            access_token=self.admin_user_tok,
        )
        self.render(request)
        self.assertEqual(
            expect_code, int(channel.result["code"]), msg=channel.result["body"],
        )

        url = "events?timeout=0&room_id=" + room_id
        request, channel = self.make_request(
            "GET",
            url.encode('ascii'),
            access_token=self.admin_user_tok,
        )
        self.render(request)
        self.assertEqual(
            expect_code, int(channel.result["code"]), msg=channel.result["body"],
        )


class DeleteGroupTestCase(unittest.HomeserverTestCase):
    servlets = [
        synapse.rest.admin.register_servlets_for_client_rest_resource,
        login.register_servlets,
        groups.register_servlets,
    ]

    def prepare(self, reactor, clock, hs):
        self.store = hs.get_datastore()

        self.admin_user = self.register_user("admin", "pass", admin=True)
        self.admin_user_tok = self.login("admin", "pass")

        self.other_user = self.register_user("user", "pass")
        self.other_user_token = self.login("user", "pass")

    def test_delete_group(self):
        # Create a new group
        request, channel = self.make_request(
            "POST",
            "/create_group".encode('ascii'),
            access_token=self.admin_user_tok,
            content={
                "localpart": "test",
            }
        )

        self.render(request)
        self.assertEqual(
            200, int(channel.result["code"]), msg=channel.result["body"],
        )

        group_id = channel.json_body["group_id"]

        self._check_group(group_id, expect_code=200)

        # Invite/join another user

        url = "/groups/%s/admin/users/invite/%s" % (group_id, self.other_user)
        request, channel = self.make_request(
            "PUT",
            url.encode('ascii'),
            access_token=self.admin_user_tok,
            content={}
        )
        self.render(request)
        self.assertEqual(
            200, int(channel.result["code"]), msg=channel.result["body"],
        )

        url = "/groups/%s/self/accept_invite" % (group_id,)
        request, channel = self.make_request(
            "PUT",
            url.encode('ascii'),
            access_token=self.other_user_token,
            content={}
        )
        self.render(request)
        self.assertEqual(
            200, int(channel.result["code"]), msg=channel.result["body"],
        )

        # Check other user knows they're in the group
        self.assertIn(group_id, self._get_groups_user_is_in(self.admin_user_tok))
        self.assertIn(group_id, self._get_groups_user_is_in(self.other_user_token))

        # Now delete the group
        url = "/admin/delete_group/" + group_id
        request, channel = self.make_request(
            "POST",
            url.encode('ascii'),
            access_token=self.admin_user_tok,
            content={
                "localpart": "test",
            }
        )

        self.render(request)
        self.assertEqual(
            200, int(channel.result["code"]), msg=channel.result["body"],
        )

        # Check group returns 404
        self._check_group(group_id, expect_code=404)

        # Check users don't think they're in the group
        self.assertNotIn(group_id, self._get_groups_user_is_in(self.admin_user_tok))
        self.assertNotIn(group_id, self._get_groups_user_is_in(self.other_user_token))

    def _check_group(self, group_id, expect_code):
        """Assert that trying to fetch the given group results in the given
        HTTP status code
        """

        url = "/groups/%s/profile" % (group_id,)
        request, channel = self.make_request(
            "GET",
            url.encode('ascii'),
            access_token=self.admin_user_tok,
        )

        self.render(request)
        self.assertEqual(
            expect_code, int(channel.result["code"]), msg=channel.result["body"],
        )

    def _get_groups_user_is_in(self, access_token):
        """Returns the list of groups the user is in (given their access token)
        """
        request, channel = self.make_request(
            "GET",
            "/joined_groups".encode('ascii'),
            access_token=access_token,
        )

        self.render(request)
        self.assertEqual(
            200, int(channel.result["code"]), msg=channel.result["body"],
        )

        return channel.json_body["groups"]