Merge branch 'develop' of github.com:matrix-org/synapse into erikj/cached_keyword_args

README.rst

@@ -101,25 +101,26 @@ header files for python C extensions.
 
 Installing prerequisites on Ubuntu or Debian::
 
-    $ sudo apt-get install build-essential python2.7-dev libffi-dev \
-                           python-pip python-setuptools sqlite3 \
-                           libssl-dev python-virtualenv libjpeg-dev
+    sudo apt-get install build-essential python2.7-dev libffi-dev \
+                         python-pip python-setuptools sqlite3 \
+                         libssl-dev python-virtualenv libjpeg-dev
                            
 Installing prerequisites on ArchLinux::
 
-    $ sudo pacman -S base-devel python2 python-pip \
-                     python-setuptools python-virtualenv sqlite3
+    sudo pacman -S base-devel python2 python-pip \
+                   python-setuptools python-virtualenv sqlite3
 
 Installing prerequisites on Mac OS X::
 
-    $ xcode-select --install
-    $ sudo pip install virtualenv
+    xcode-select --install
+    sudo easy_install pip
+    sudo pip install virtualenv
     
 To install the synapse homeserver run::
 
-    $ virtualenv -p python2.7 ~/.synapse
-    $ source ~/.synapse/bin/activate
-    $ pip install --process-dependency-links https://github.com/matrix-org/synapse/tarball/master
+    virtualenv -p python2.7 ~/.synapse
+    source ~/.synapse/bin/activate
+    pip install --process-dependency-links https://github.com/matrix-org/synapse/tarball/master
 
 This installs synapse, along with the libraries it uses, into a virtual
 environment under ``~/.synapse``.  Feel free to pick a different directory
@@ -132,8 +133,8 @@ above in Docker at https://registry.hub.docker.com/u/silviof/docker-matrix/.
 
 To set up your homeserver, run (in your virtualenv, as before)::
 
-    $ cd ~/.synapse
-    $ python -m synapse.app.homeserver \
+    cd ~/.synapse
+    python -m synapse.app.homeserver \
         --server-name machine.my.domain.name \
         --config-path homeserver.yaml \
         --generate-config
@@ -192,9 +193,9 @@ Running Synapse
 To actually run your new homeserver, pick a working directory for Synapse to run 
 (e.g. ``~/.synapse``), and::
 
-    $ cd ~/.synapse
-    $ source ./bin/activate
-    $ synctl start
+    cd ~/.synapse
+    source ./bin/activate
+    synctl start
 
 Platform Specific Instructions
 ==============================
@@ -212,12 +213,12 @@ defaults to python 3, but synapse currently assumes python 2.7 by default:
 
 pip may be outdated (6.0.7-1 and needs to be upgraded to 6.0.8-1 )::
 
-    $ sudo pip2.7 install --upgrade pip
+    sudo pip2.7 install --upgrade pip
     
 You also may need to explicitly specify python 2.7 again during the install
 request::
 
-    $ pip2.7 install --process-dependency-links \
+    pip2.7 install --process-dependency-links \
         https://github.com/matrix-org/synapse/tarball/master
     
 If you encounter an error with lib bcrypt causing an Wrong ELF Class:
@@ -225,13 +226,13 @@ ELFCLASS32 (x64 Systems), you may need to reinstall py-bcrypt to correctly
 compile it under the right architecture. (This should not be needed if
 installing under virtualenv)::
 
-    $ sudo pip2.7 uninstall py-bcrypt
-    $ sudo pip2.7 install py-bcrypt
+    sudo pip2.7 uninstall py-bcrypt
+    sudo pip2.7 install py-bcrypt
     
 During setup of Synapse you need to call python2.7 directly again::
 
-    $ cd ~/.synapse
-    $ python2.7 -m synapse.app.homeserver \
+    cd ~/.synapse
+    python2.7 -m synapse.app.homeserver \
       --server-name machine.my.domain.name \
       --config-path homeserver.yaml \
       --generate-config
@@ -279,22 +280,22 @@ Synapse requires pip 1.7 or later, so if your OS provides too old a version and
 you get errors about ``error: no such option: --process-dependency-links`` you 
 may need to manually upgrade it::
 
-    $ sudo pip install --upgrade pip
+    sudo pip install --upgrade pip
 
 If pip crashes mid-installation for reason (e.g. lost terminal), pip may
 refuse to run until you remove the temporary installation directory it
 created. To reset the installation::
 
-    $ rm -rf /tmp/pip_install_matrix
+    rm -rf /tmp/pip_install_matrix
 
 pip seems to leak *lots* of memory during installation.  For instance, a Linux 
 host with 512MB of RAM may run out of memory whilst installing Twisted.  If this 
 happens, you will have to individually install the dependencies which are 
 failing, e.g.::
 
-    $ pip install twisted
+    pip install twisted
 
-On OSX, if you encounter clang: error: unknown argument: '-mno-fused-madd' you
+On OS X, if you encounter clang: error: unknown argument: '-mno-fused-madd' you
 will need to export CFLAGS=-Qunused-arguments.
 
 Troubleshooting Running
@@ -310,10 +311,11 @@ correctly, causing all tests to fail with errors about missing "sodium.h". To
 fix try re-installing from PyPI or directly from
 (https://github.com/pyca/pynacl)::
 
-    $ # Install from PyPI
-    $ pip install --user --upgrade --force pynacl
-    $ # Install from github
-    $ pip install --user https://github.com/pyca/pynacl/tarball/master
+    # Install from PyPI
+    pip install --user --upgrade --force pynacl
+    
+    # Install from github
+    pip install --user https://github.com/pyca/pynacl/tarball/master
 
 ArchLinux
 ~~~~~~~~~
@@ -321,7 +323,7 @@ ArchLinux
 If running `$ synctl start` fails with 'returned non-zero exit status 1',
 you will need to explicitly call Python2.7 - either running as::
 
-    $ python2.7 -m synapse.app.homeserver --daemonize -c homeserver.yaml
+    python2.7 -m synapse.app.homeserver --daemonize -c homeserver.yaml
     
 ...or by editing synctl with the correct python executable.
 
@@ -331,16 +333,16 @@ Synapse Development
 To check out a synapse for development, clone the git repo into a working
 directory of your choice::
 
-    $ git clone https://github.com/matrix-org/synapse.git
-    $ cd synapse
+    git clone https://github.com/matrix-org/synapse.git
+    cd synapse
 
 Synapse has a number of external dependencies, that are easiest
 to install using pip and a virtualenv::
 
-    $ virtualenv env
-    $ source env/bin/activate
-    $ python synapse/python_dependencies.py | xargs -n1 pip install
-    $ pip install setuptools_trial mock
+    virtualenv env
+    source env/bin/activate
+    python synapse/python_dependencies.py | xargs -n1 pip install
+    pip install setuptools_trial mock
 
 This will run a process of downloading and installing all the needed
 dependencies into a virtual env.
@@ -348,7 +350,7 @@ dependencies into a virtual env.
 Once this is done, you may wish to run Synapse's unit tests, to
 check that everything is installed as it should be::
 
-    $ python setup.py test
+    python setup.py test
 
 This should end with a 'PASSED' result::
 
@@ -389,11 +391,11 @@ IDs:
 For the first form, simply pass the required hostname (of the machine) as the
 --server-name parameter::
 
-    $ python -m synapse.app.homeserver \
+    python -m synapse.app.homeserver \
         --server-name machine.my.domain.name \
         --config-path homeserver.yaml \
         --generate-config
-    $ python -m synapse.app.homeserver --config-path homeserver.yaml
+    python -m synapse.app.homeserver --config-path homeserver.yaml
 
 Alternatively, you can run ``synctl start`` to guide you through the process.
 
@@ -410,11 +412,11 @@ record would then look something like::
 At this point, you should then run the homeserver with the hostname of this
 SRV record, as that is the name other machines will expect it to have::
 
-    $ python -m synapse.app.homeserver \
+    python -m synapse.app.homeserver \
         --server-name YOURDOMAIN \
         --config-path homeserver.yaml \
         --generate-config
-    $ python -m synapse.app.homeserver --config-path homeserver.yaml
+    python -m synapse.app.homeserver --config-path homeserver.yaml
 
 
 You may additionally want to pass one or more "-v" options, in order to
@@ -428,7 +430,7 @@ private federation (``localhost:8080``, ``localhost:8081`` and
 ``localhost:8082``) which you can then access through the webclient running at
 http://localhost:8080. Simply run::
 
-    $ demo/start.sh
+    demo/start.sh
     
 This is mainly useful just for development purposes.
 
@@ -502,10 +504,10 @@ Building Internal API Documentation
 Before building internal API documentation install sphinx and
 sphinxcontrib-napoleon::
 
-    $ pip install sphinx
-    $ pip install sphinxcontrib-napoleon
+    pip install sphinx
+    pip install sphinxcontrib-napoleon
 
 Building internal API documentation::
 
-    $ python setup.py build_sphinx
+    python setup.py build_sphinx
 

synapse/handlers/identity.py

@@ -44,7 +44,7 @@ class IdentityHandler(BaseHandler):
         http_client = SimpleHttpClient(self.hs)
         # XXX: make this configurable!
         # trustedIdServers = ['matrix.org', 'localhost:8090']
-        trustedIdServers = ['matrix.org']
+        trustedIdServers = ['matrix.org', 'vector.im']
 
         if 'id_server' in creds:
             id_server = creds['id_server']

synapse/handlers/register.py

@@ -73,7 +73,8 @@ class RegistrationHandler(BaseHandler):
             localpart : The local part of the user ID to register. If None,
               one will be randomly generated.
             password (str) : The password to assign to this user so they can
-            login again.
+            login again. This can be None which means they cannot login again
+            via a password (e.g. the user is an application service user).
         Returns:
             A tuple of (user_id, access_token).
         Raises:

synapse/rest/client/v2_alpha/register.py

@@ -19,7 +19,7 @@ from synapse.api.constants import LoginType
 from synapse.api.errors import SynapseError, Codes
 from synapse.http.servlet import RestServlet
 
-from ._base import client_v2_pattern, parse_request_allow_empty
+from ._base import client_v2_pattern, parse_json_dict_from_request
 
 import logging
 import hmac
@@ -55,30 +55,55 @@ class RegisterRestServlet(RestServlet):
     @defer.inlineCallbacks
     def on_POST(self, request):
         yield run_on_reactor()
+        body = parse_json_dict_from_request(request)
 
-        body = parse_request_allow_empty(request)
-        # we do basic sanity checks here because the auth
-        # layer will store these in sessions
+        # 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
         if 'password' in body:
-            if ((not isinstance(body['password'], str) and
-                    not isinstance(body['password'], unicode)) or
+            if (not isinstance(body['password'], basestring) or
                     len(body['password']) > 512):
                 raise SynapseError(400, "Invalid password")
+            desired_password = body["password"]
 
+        desired_username = None
         if 'username' in body:
-            if ((not isinstance(body['username'], str) and
-                    not isinstance(body['username'], unicode)) or
+            if (not isinstance(body['username'], basestring) or
                     len(body['username']) > 512):
                 raise SynapseError(400, "Invalid username")
             desired_username = body['username']
-            yield self.registration_handler.check_username(desired_username)
 
-        is_using_shared_secret = False
-        is_application_server = False
-
-        service = None
+        appservice = None
         if 'access_token' in request.args:
-            service = yield self.auth.get_appservice_by_req(request)
+            appservice = yield self.auth.get_appservice_by_req(request)
+
+        # fork off as soon as possible for ASes and shared secret auth which
+        # have completely different registration flows to normal users
+
+        # == Application Service Registration ==
+        if appservice:
+            result = yield self._do_appservice_registration(
+                desired_username, request.args["access_token"][0]
+            )
+            defer.returnValue((200, result))  # we throw for non 200 responses
+            return
+
+        # == Shared Secret Registration == (e.g. create new user scripts)
+        if 'mac' in body:
+            # FIXME: Should we really be determining if this is shared secret
+            # auth based purely on the 'mac' key?
+            result = yield self._do_shared_secret_registration(
+                desired_username, desired_password, body["mac"]
+            )
+            defer.returnValue((200, result))  # we throw for non 200 responses
+            return
+
+        # == Normal User Registration == (everyone else)
+        if self.hs.config.disable_registration:
+            raise SynapseError(403, "Registration has been disabled")
+
+        if desired_username is not None:
+            yield self.registration_handler.check_username(desired_username)
 
         if self.hs.config.enable_registration_captcha:
             flows = [
@@ -91,39 +116,20 @@ class RegisterRestServlet(RestServlet):
                 [LoginType.EMAIL_IDENTITY]
             ]
 
-        result = None
-        if service:
-            is_application_server = True
-            params = body
-        elif 'mac' in body:
-            # Check registration-specific shared secret auth
-            if 'username' not in body:
-                raise SynapseError(400, "", Codes.MISSING_PARAM)
-            self._check_shared_secret_auth(
-                body['username'], body['mac']
-            )
-            is_using_shared_secret = True
-            params = body
-        else:
-            authed, result, params = yield self.auth_handler.check_auth(
-                flows, body, self.hs.get_ip_from_request(request)
-            )
-
-            if not authed:
-                defer.returnValue((401, result))
-
-        can_register = (
-            not self.hs.config.disable_registration
-            or is_application_server
-            or is_using_shared_secret
+        authed, result, params = yield self.auth_handler.check_auth(
+            flows, body, self.hs.get_ip_from_request(request)
         )
-        if not can_register:
-            raise SynapseError(403, "Registration has been disabled")
 
+        if not authed:
+            defer.returnValue((401, result))
+            return
+
+        # NB: This may be from the auth handler and NOT from the POST
         if 'password' not in params:
-            raise SynapseError(400, "", Codes.MISSING_PARAM)
-        desired_username = params['username'] if 'username' in params else None
-        new_password = params['password']
+            raise SynapseError(400, "Missing password.", Codes.MISSING_PARAM)
+
+        desired_username = params.get("username", None)
+        new_password = params.get("password", None)
 
         (user_id, token) = yield self.registration_handler.register(
             localpart=desired_username,
@@ -156,18 +162,21 @@ class RegisterRestServlet(RestServlet):
             else:
                 logger.info("bind_email not specified: not binding email")
 
-        result = {
-            "user_id": user_id,
-            "access_token": token,
-            "home_server": self.hs.hostname,
-        }
-
+        result = self._create_registration_details(user_id, token)
         defer.returnValue((200, result))
 
     def on_OPTIONS(self, _):
         return 200, {}
 
-    def _check_shared_secret_auth(self, username, mac):
+    @defer.inlineCallbacks
+    def _do_appservice_registration(self, username, as_token):
+        (user_id, token) = yield self.registration_handler.appservice_register(
+            username, as_token
+        )
+        defer.returnValue(self._create_registration_details(user_id, token))
+
+    @defer.inlineCallbacks
+    def _do_shared_secret_registration(self, username, password, mac):
         if not self.hs.config.registration_shared_secret:
             raise SynapseError(400, "Shared secret registration is not enabled")
 
@@ -183,13 +192,23 @@ class RegisterRestServlet(RestServlet):
             digestmod=sha1,
         ).hexdigest()
 
-        if compare_digest(want_mac, got_mac):
-            return True
-        else:
+        if not compare_digest(want_mac, got_mac):
             raise SynapseError(
                 403, "HMAC incorrect",
             )
 
+        (user_id, token) = yield self.registration_handler.register(
+            localpart=username, password=password
+        )
+        defer.returnValue(self._create_registration_details(user_id, token))
+
+    def _create_registration_details(self, user_id, token):
+        return {
+            "user_id": user_id,
+            "access_token": token,
+            "home_server": self.hs.hostname,
+        }
+
 
 def register_servlets(hs, http_server):
     RegisterRestServlet(hs).register(http_server)

synapse/rest/media/v1/base_resource.py

@@ -244,43 +244,52 @@ class BaseMediaResource(Resource):
             )
             return
 
-        scales = set()
-        crops = set()
-        for r_width, r_height, r_method, r_type in requirements:
-            if r_method == "scale":
-                t_width, t_height = thumbnailer.aspect(r_width, r_height)
-                scales.add((
-                    min(m_width, t_width), min(m_height, t_height), r_type,
+        local_thumbnails = []
+
+        def generate_thumbnails():
+            scales = set()
+            crops = set()
+            for r_width, r_height, r_method, r_type in requirements:
+                if r_method == "scale":
+                    t_width, t_height = thumbnailer.aspect(r_width, r_height)
+                    scales.add((
+                        min(m_width, t_width), min(m_height, t_height), r_type,
+                    ))
+                elif r_method == "crop":
+                    crops.add((r_width, r_height, r_type))
+
+            for t_width, t_height, t_type in scales:
+                t_method = "scale"
+                t_path = self.filepaths.local_media_thumbnail(
+                    media_id, t_width, t_height, t_type, t_method
+                )
+                self._makedirs(t_path)
+                t_len = thumbnailer.scale(t_path, t_width, t_height, t_type)
+
+                local_thumbnails.append((
+                    media_id, t_width, t_height, t_type, t_method, t_len
                 ))
-            elif r_method == "crop":
-                crops.add((r_width, r_height, r_type))
 
-        for t_width, t_height, t_type in scales:
-            t_method = "scale"
-            t_path = self.filepaths.local_media_thumbnail(
-                media_id, t_width, t_height, t_type, t_method
-            )
-            self._makedirs(t_path)
-            t_len = thumbnailer.scale(t_path, t_width, t_height, t_type)
-            yield self.store.store_local_thumbnail(
-                media_id, t_width, t_height, t_type, t_method, t_len
-            )
+            for t_width, t_height, t_type in crops:
+                if (t_width, t_height, t_type) in scales:
+                    # If the aspect ratio of the cropped thumbnail matches a purely
+                    # scaled one then there is no point in calculating a separate
+                    # thumbnail.
+                    continue
+                t_method = "crop"
+                t_path = self.filepaths.local_media_thumbnail(
+                    media_id, t_width, t_height, t_type, t_method
+                )
+                self._makedirs(t_path)
+                t_len = thumbnailer.crop(t_path, t_width, t_height, t_type)
+                local_thumbnails.append((
+                    media_id, t_width, t_height, t_type, t_method, t_len
+                ))
 
-        for t_width, t_height, t_type in crops:
-            if (t_width, t_height, t_type) in scales:
-                # If the aspect ratio of the cropped thumbnail matches a purely
-                # scaled one then there is no point in calculating a separate
-                # thumbnail.
-                continue
-            t_method = "crop"
-            t_path = self.filepaths.local_media_thumbnail(
-                media_id, t_width, t_height, t_type, t_method
-            )
-            self._makedirs(t_path)
-            t_len = thumbnailer.crop(t_path, t_width, t_height, t_type)
-            yield self.store.store_local_thumbnail(
-                media_id, t_width, t_height, t_type, t_method, t_len
-            )
+        yield threads.deferToThread(generate_thumbnails)
+
+        for l in local_thumbnails:
+            yield self.store.store_local_thumbnail(*l)
 
         defer.returnValue({
             "width": m_width,

synapse/storage/_base.py

@@ -58,7 +58,7 @@ cache_counter = metrics.register_cache(
 
 class Cache(object):
 
-    def __init__(self, name, max_entries=1000, keylen=1, lru=False):
+    def __init__(self, name, max_entries=1000, keylen=1, lru=True):
         if lru:
             self.cache = LruCache(max_size=max_entries)
             self.max_entries = None
@@ -142,7 +142,7 @@ class CacheDescriptor(object):
     which can be used to insert values into the cache specifically, without
     calling the calculation function.
     """
-    def __init__(self, orig, max_entries=1000, num_args=1, lru=False,
+    def __init__(self, orig, max_entries=1000, num_args=1, lru=True,
                  inlineCallbacks=False):
         self.orig = orig
 
@@ -210,7 +210,7 @@ class CacheDescriptor(object):
         return wrapped
 
 
-def cached(max_entries=1000, num_args=1, lru=False):
+def cached(max_entries=1000, num_args=1, lru=True):
     return lambda orig: CacheDescriptor(
         orig,
         max_entries=max_entries,

synapse/storage/roommember.py

@@ -78,7 +78,7 @@ class RoomMemberStore(SQLBaseStore):
             lambda events: events[0] if events else None
         )
 
-    @cached()
+    @cached(max_entries=5000)
     def get_users_in_room(self, room_id):
         def f(txn):
 
@@ -154,7 +154,7 @@ class RoomMemberStore(SQLBaseStore):
             RoomsForUser(**r) for r in self.cursor_to_dict(txn)
         ]
 
-    @cached()
+    @cached(max_entries=5000)
     def get_joined_hosts_for_room(self, room_id):
         return self.runInteraction(
             "get_joined_hosts_for_room",

tests/rest/client/v2_alpha/test_register.py

@@ -0,0 +1,134 @@
+from synapse.rest.client.v2_alpha.register import RegisterRestServlet
+from synapse.api.errors import SynapseError
+from twisted.internet import defer
+from mock import Mock, MagicMock
+from tests import unittest
+import json
+
+
+class RegisterRestServletTestCase(unittest.TestCase):
+
+    def setUp(self):
+        # do the dance to hook up request data to self.request_data
+        self.request_data = ""
+        self.request = Mock(
+            content=Mock(read=Mock(side_effect=lambda: self.request_data)),
+        )
+        self.request.args = {}
+
+        self.appservice = None
+        self.auth = Mock(get_appservice_by_req=Mock(
+            side_effect=lambda x: defer.succeed(self.appservice))
+        )
+
+        self.auth_result = (False, None, None)
+        self.auth_handler = Mock(
+            check_auth=Mock(side_effect=lambda x,y,z: self.auth_result)
+        )
+        self.registration_handler = Mock()
+        self.identity_handler = Mock()
+        self.login_handler = Mock()
+
+        # do the dance to hook it up to the hs global
+        self.handlers = Mock(
+            auth_handler=self.auth_handler,
+            registration_handler=self.registration_handler,
+            identity_handler=self.identity_handler,
+            login_handler=self.login_handler
+        )
+        self.hs = Mock()
+        self.hs.hostname = "superbig~testing~thing.com"
+        self.hs.get_auth = Mock(return_value=self.auth)
+        self.hs.get_handlers = Mock(return_value=self.handlers)
+        self.hs.config.disable_registration = False
+
+        # init the thing we're testing
+        self.servlet = RegisterRestServlet(self.hs)
+
+    @defer.inlineCallbacks
+    def test_POST_appservice_registration_valid(self):
+        user_id = "@kermit:muppet"
+        token = "kermits_access_token"
+        self.request.args = {
+            "access_token": "i_am_an_app_service"
+        }
+        self.request_data = json.dumps({
+            "username": "kermit"
+        })
+        self.appservice = {
+            "id": "1234"
+        }
+        self.registration_handler.appservice_register = Mock(
+            return_value=(user_id, token)
+        )
+        result = yield self.servlet.on_POST(self.request)
+        self.assertEquals(result, (200, {
+            "user_id": user_id,
+            "access_token": token,
+            "home_server": self.hs.hostname
+        }))
+
+    @defer.inlineCallbacks
+    def test_POST_appservice_registration_invalid(self):
+        self.request.args = {
+            "access_token": "i_am_an_app_service"
+        }
+        self.request_data = json.dumps({
+            "username": "kermit"
+        })
+        self.appservice = None  # no application service exists
+        result = yield self.servlet.on_POST(self.request)
+        self.assertEquals(result, (401, None))
+
+    def test_POST_bad_password(self):
+        self.request_data = json.dumps({
+            "username": "kermit",
+            "password": 666
+        })
+        d = self.servlet.on_POST(self.request)
+        return self.assertFailure(d, SynapseError)
+
+    def test_POST_bad_username(self):
+        self.request_data = json.dumps({
+            "username": 777,
+            "password": "monkey"
+        })
+        d = self.servlet.on_POST(self.request)
+        return self.assertFailure(d, SynapseError)
+
+    @defer.inlineCallbacks
+    def test_POST_user_valid(self):
+        user_id = "@kermit:muppet"
+        token = "kermits_access_token"
+        self.request_data = json.dumps({
+            "username": "kermit",
+            "password": "monkey"
+        })
+        self.registration_handler.check_username = Mock(return_value=True)
+        self.auth_result = (True, None, {
+            "username": "kermit",
+            "password": "monkey"
+        })
+        self.registration_handler.register = Mock(return_value=(user_id, token))
+
+        result = yield self.servlet.on_POST(self.request)
+        self.assertEquals(result, (200, {
+            "user_id": user_id,
+            "access_token": token,
+            "home_server": self.hs.hostname
+        }))
+
+    def test_POST_disabled_registration(self):
+        self.hs.config.disable_registration = True
+        self.request_data = json.dumps({
+            "username": "kermit",
+            "password": "monkey"
+        })
+        self.registration_handler.check_username = Mock(return_value=True)
+        self.auth_result = (True, None, {
+            "username": "kermit",
+            "password": "monkey"
+        })
+        self.registration_handler.register = Mock(return_value=("@user:id", "t"))
+        d = self.servlet.on_POST(self.request)
+        return self.assertFailure(d, SynapseError)