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-rw-r--r--CHANGES.md2
-rw-r--r--changelog.d/5742.feature1
-rw-r--r--changelog.d/6621.doc1
-rw-r--r--changelog.d/6624.doc1
-rw-r--r--changelog.d/6654.bugfix1
-rw-r--r--changelog.d/6656.doc1
-rw-r--r--changelog.d/6664.bugfix1
-rw-r--r--changelog.d/6665.doc1
-rw-r--r--contrib/docker/docker-compose.yml2
-rw-r--r--docs/admin_api/user_admin_api.rst33
-rw-r--r--docs/message_retention_policies.md191
-rw-r--r--docs/sample_config.yaml10
-rw-r--r--synapse/app/media_repository.py2
-rw-r--r--synapse/config/server.py10
-rw-r--r--synapse/handlers/admin.py9
-rw-r--r--synapse/handlers/groups_local.py16
-rw-r--r--synapse/rest/admin/__init__.py2
-rw-r--r--synapse/rest/admin/users.py142
-rw-r--r--synapse/storage/data_stores/main/registration.py2
-rw-r--r--synapse/storage/data_stores/main/room.py248
-rw-r--r--tests/rest/admin/test_admin.py338
-rw-r--r--tests/rest/admin/test_user.py465
-rw-r--r--tests/storage/test_registration.py2
23 files changed, 1010 insertions, 471 deletions
diff --git a/CHANGES.md b/CHANGES.md
index d06b8c8ad3..c8840e9c74 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -19,7 +19,7 @@ Features
 
 - Add v2 APIs for the `send_join` and `send_leave` federation endpoints (as described in [MSC1802](https://github.com/matrix-org/matrix-doc/pull/1802)). ([\#6349](https://github.com/matrix-org/synapse/issues/6349))
 - Add a develop script to generate full SQL schemas. ([\#6394](https://github.com/matrix-org/synapse/issues/6394))
-- Add custom SAML username mapping functinality through an external provider plugin. ([\#6411](https://github.com/matrix-org/synapse/issues/6411))
+- Add custom SAML username mapping functionality through an external provider plugin. ([\#6411](https://github.com/matrix-org/synapse/issues/6411))
 - Automatically delete empty groups/communities. ([\#6453](https://github.com/matrix-org/synapse/issues/6453))
 - Add option `limit_profile_requests_to_users_who_share_rooms` to prevent requirement of a local user sharing a room with another user to query their profile information. ([\#6523](https://github.com/matrix-org/synapse/issues/6523))
 - Add an `export_signing_key` script to extract the public part of signing keys when rotating them. ([\#6546](https://github.com/matrix-org/synapse/issues/6546))
diff --git a/changelog.d/5742.feature b/changelog.d/5742.feature
new file mode 100644
index 0000000000..de10302275
--- /dev/null
+++ b/changelog.d/5742.feature
@@ -0,0 +1 @@
+Allow admin to create or modify a user. Contributed by Awesome Technologies Innovationslabor GmbH.
diff --git a/changelog.d/6621.doc b/changelog.d/6621.doc
new file mode 100644
index 0000000000..6722ccfda3
--- /dev/null
+++ b/changelog.d/6621.doc
@@ -0,0 +1 @@
+Fix a typo in the configuration example for purge jobs in the sample configuration file.
diff --git a/changelog.d/6624.doc b/changelog.d/6624.doc
new file mode 100644
index 0000000000..bc9a022db2
--- /dev/null
+++ b/changelog.d/6624.doc
@@ -0,0 +1 @@
+Add complete documentation of the message retention policies support.
diff --git a/changelog.d/6654.bugfix b/changelog.d/6654.bugfix
new file mode 100644
index 0000000000..fed35252db
--- /dev/null
+++ b/changelog.d/6654.bugfix
@@ -0,0 +1 @@
+Correctly proxy HTTP errors due to API calls to remote group servers.
diff --git a/changelog.d/6656.doc b/changelog.d/6656.doc
new file mode 100644
index 0000000000..9f32da1a88
--- /dev/null
+++ b/changelog.d/6656.doc
@@ -0,0 +1 @@
+No more overriding the entire /etc folder of the container in docker-compose.yaml. Contributed by Fabian Meyer.
diff --git a/changelog.d/6664.bugfix b/changelog.d/6664.bugfix
new file mode 100644
index 0000000000..8c6a6fa1c8
--- /dev/null
+++ b/changelog.d/6664.bugfix
@@ -0,0 +1 @@
+Fix media repo admin APIs when using a media worker.
diff --git a/changelog.d/6665.doc b/changelog.d/6665.doc
new file mode 100644
index 0000000000..bc9a022db2
--- /dev/null
+++ b/changelog.d/6665.doc
@@ -0,0 +1 @@
+Add complete documentation of the message retention policies support.
diff --git a/contrib/docker/docker-compose.yml b/contrib/docker/docker-compose.yml
index 72c87054e5..2b044baf78 100644
--- a/contrib/docker/docker-compose.yml
+++ b/contrib/docker/docker-compose.yml
@@ -18,7 +18,7 @@ services:
       - SYNAPSE_CONFIG_PATH=/etc/homeserver.yaml
     volumes:
       # You may either store all the files in a local folder
-      - ./matrix-config:/etc
+      - ./matrix-config/homeserver.yaml:/etc/homeserver.yaml
       - ./files:/data
       # .. or you may split this between different storage points
       # - ./files:/data
diff --git a/docs/admin_api/user_admin_api.rst b/docs/admin_api/user_admin_api.rst
index b451dc5014..0b3d09d694 100644
--- a/docs/admin_api/user_admin_api.rst
+++ b/docs/admin_api/user_admin_api.rst
@@ -1,3 +1,33 @@
+Create or modify Account
+========================
+
+This API allows an administrator to create or modify a user account with a
+specific ``user_id``.
+
+This api is::
+
+    PUT /_synapse/admin/v2/users/<user_id>
+
+with a body of:
+
+.. code:: json
+
+    {
+        "password": "user_password",
+        "displayname": "User",
+        "avatar_url": "<avatar_url>",
+        "admin": false,
+        "deactivated": false
+    }
+
+including an ``access_token`` of a server admin.
+
+The parameter ``displayname`` is optional and defaults to ``user_id``.
+The parameter ``avatar_url`` is optional.
+The parameter ``admin`` is optional and defaults to 'false'.
+The parameter ``deactivated`` is optional and defaults to 'false'.
+If the user already exists then optional parameters default to the current value.
+
 List Accounts
 =============
 
@@ -50,7 +80,8 @@ This API returns information about a specific user account.
 
 The api is::
 
-    GET /_synapse/admin/v1/whois/<user_id>
+    GET /_synapse/admin/v1/whois/<user_id> (deprecated)
+    GET /_synapse/admin/v2/users/<user_id>
 
 including an ``access_token`` of a server admin.
 
diff --git a/docs/message_retention_policies.md b/docs/message_retention_policies.md
new file mode 100644
index 0000000000..4300809dfe
--- /dev/null
+++ b/docs/message_retention_policies.md
@@ -0,0 +1,191 @@
+# Message retention policies
+
+Synapse admins can enable support for message retention policies on
+their homeserver. Message retention policies exist at a room level,
+follow the semantics described in
+[MSC1763](https://github.com/matrix-org/matrix-doc/blob/matthew/msc1763/proposals/1763-configurable-retention-periods.md),
+and allow server and room admins to configure how long messages should
+be kept in a homeserver's database before being purged from it.
+**Please note that, as this feature isn't part of the Matrix
+specification yet, this implementation is to be considered as
+experimental.** 
+
+A message retention policy is mainly defined by its `max_lifetime`
+parameter, which defines how long a message can be kept around after
+it was sent to the room. If a room doesn't have a message retention
+policy, and there's no default one for a given server, then no message
+sent in that room is ever purged on that server.
+
+MSC1763 also specifies semantics for a `min_lifetime` parameter which
+defines the amount of time after which an event _can_ get purged (after
+it was sent to the room), but Synapse doesn't currently support it
+beyond registering it.
+
+Both `max_lifetime` and `min_lifetime` are optional parameters.
+
+Note that message retention policies don't apply to state events.
+
+Once an event reaches its expiry date (defined as the time it was sent
+plus the value for `max_lifetime` in the room), two things happen:
+
+* Synapse stops serving the event to clients via any endpoint.
+* The message gets picked up by the next purge job (see the "Purge jobs"
+  section) and is removed from Synapse's database.
+
+Since purge jobs don't run continuously, this means that an event might
+stay in a server's database for longer than the value for `max_lifetime`
+in the room would allow, though hidden from clients.
+
+Similarly, if a server (with support for message retention policies
+enabled) receives from another server an event that should have been
+purged according to its room's policy, then the receiving server will
+process and store that event until it's picked up by the next purge job,
+though it will always hide it from clients.
+
+
+## Server configuration
+
+Support for this feature can be enabled and configured in the
+`retention` section of the Synapse configuration file (see the
+[sample file](https://github.com/matrix-org/synapse/blob/v1.7.3/docs/sample_config.yaml#L332-L393)).
+
+To enable support for message retention policies, set the setting
+`enabled` in this section to `true`.
+
+
+### Default policy
+
+A default message retention policy is a policy defined in Synapse's
+configuration that is used by Synapse for every room that doesn't have a
+message retention policy configured in its state. This allows server
+admins to ensure that messages are never kept indefinitely in a server's
+database. 
+
+A default policy can be defined as such, in the `retention` section of
+the configuration file:
+
+```yaml
+  default_policy:
+    min_lifetime: 1d
+    max_lifetime: 1y
+```
+
+Here, `min_lifetime` and `max_lifetime` have the same meaning and level
+of support as previously described. They can be expressed either as a
+duration (using the units `s` (seconds), `m` (minutes), `h` (hours),
+`d` (days), `w` (weeks) and `y` (years)) or as a number of milliseconds.
+
+
+### Purge jobs
+
+Purge jobs are the jobs that Synapse runs in the background to purge
+expired events from the database. They are only run if support for
+message retention policies is enabled in the server's configuration. If
+no configuration for purge jobs is configured by the server admin,
+Synapse will use a default configuration, which is described in the
+[sample configuration file](https://github.com/matrix-org/synapse/blob/master/docs/sample_config.yaml#L332-L393).
+
+Some server admins might want a finer control on when events are removed
+depending on an event's room's policy. This can be done by setting the
+`purge_jobs` sub-section in the `retention` section of the configuration
+file. An example of such configuration could be:
+
+```yaml
+  purge_jobs:
+    - longest_max_lifetime: 3d
+      interval: 12h
+    - shortest_max_lifetime: 3d
+      longest_max_lifetime: 1w
+      interval: 1d
+    - shortest_max_lifetime: 1w
+      interval: 2d
+```
+
+In this example, we define three jobs:
+
+* one that runs twice a day (every 12 hours) and purges events in rooms
+  which policy's `max_lifetime` is lower or equal to 3 days.
+* one that runs once a day and purges events in rooms which policy's
+  `max_lifetime` is between 3 days and a week.
+* one that runs once every 2 days and purges events in rooms which
+  policy's `max_lifetime` is greater than a week.
+
+Note that this example is tailored to show different configurations and
+features slightly more jobs than it's probably necessary (in practice, a
+server admin would probably consider it better to replace the two last
+jobs with one that runs once a day and handles rooms which which
+policy's `max_lifetime` is greater than 3 days).
+
+Keep in mind, when configuring these jobs, that a purge job can become
+quite heavy on the server if it targets many rooms, therefore prefer
+having jobs with a low interval that target a limited set of rooms. Also
+make sure to include a job with no minimum and one with no maximum to
+make sure your configuration handles every policy.
+
+As previously mentioned in this documentation, while a purge job that
+runs e.g. every day means that an expired event might stay in the
+database for up to a day after its expiry, Synapse hides expired events
+from clients as soon as they expire, so the event is not visible to
+local users between its expiry date and the moment it gets purged from
+the server's database.
+
+
+### Lifetime limits
+
+**Note: this feature is mainly useful within a closed federation or on
+servers that don't federate, because there currently is no way to
+enforce these limits in an open federation.**
+
+Server admins can restrict the values their local users are allowed to
+use for both `min_lifetime` and `max_lifetime`. These limits can be
+defined as such in the `retention` section of the configuration file:
+
+```yaml
+  allowed_lifetime_min: 1d
+  allowed_lifetime_max: 1y
+```
+
+Here, `allowed_lifetime_min` is the lowest value a local user can set
+for both `min_lifetime` and `max_lifetime`, and `allowed_lifetime_max`
+is the highest value. Both parameters are optional (e.g. setting
+`allowed_lifetime_min` but not `allowed_lifetime_max` only enforces a
+minimum and no maximum).
+
+Like other settings in this section, these parameters can be expressed
+either as a duration or as a number of milliseconds.
+
+
+## Room configuration
+
+To configure a room's message retention policy, a room's admin or
+moderator needs to send a state event in that room with the type
+`m.room.retention` and the following content:
+
+```json
+{
+    "max_lifetime": ...
+}
+```
+
+In this event's content, the `max_lifetime` parameter has the same
+meaning as previously described, and needs to be expressed in
+milliseconds. The event's content can also include a `min_lifetime`
+parameter, which has the same meaning and limited support as previously
+described.
+
+Note that over every server in the room, only the ones with support for
+message retention policies will actually remove expired events. This
+support is currently not enabled by default in Synapse.
+
+
+## Note on reclaiming disk space
+
+While purge jobs actually delete data from the database, the disk space
+used by the database might not decrease immediately on the database's
+host. However, even though the database engine won't free up the disk
+space, it will start writing new data into where the purged data was.
+
+If you want to reclaim the freed disk space anyway and return it to the
+operating system, the server admin needs to run `VACUUM FULL;` (or
+`VACUUM;` for SQLite databases) on Synapse's database (see the related
+[PostgreSQL documentation](https://www.postgresql.org/docs/current/sql-vacuum.html)).
diff --git a/docs/sample_config.yaml b/docs/sample_config.yaml
index fad5f968b5..0a2505e7bb 100644
--- a/docs/sample_config.yaml
+++ b/docs/sample_config.yaml
@@ -387,17 +387,17 @@ retention:
   #
   # The rationale for this per-job configuration is that some rooms might have a
   # retention policy with a low 'max_lifetime', where history needs to be purged
-  # of outdated messages on a very frequent basis (e.g. every 5min), but not want
-  # that purge to be performed by a job that's iterating over every room it knows,
-  # which would be quite heavy on the server.
+  # of outdated messages on a more frequent basis than for the rest of the rooms
+  # (e.g. every 12h), but not want that purge to be performed by a job that's
+  # iterating over every room it knows, which could be heavy on the server.
   #
   #purge_jobs:
   #  - shortest_max_lifetime: 1d
   #    longest_max_lifetime: 3d
-  #    interval: 5m:
+  #    interval: 12h
   #  - shortest_max_lifetime: 3d
   #    longest_max_lifetime: 1y
-  #    interval: 24h
+  #    interval: 1d
 
 
 ## TLS ##
diff --git a/synapse/app/media_repository.py b/synapse/app/media_repository.py
index a63c53dc44..5b5832214a 100644
--- a/synapse/app/media_repository.py
+++ b/synapse/app/media_repository.py
@@ -34,6 +34,7 @@ from synapse.replication.slave.storage._base import BaseSlavedStore
 from synapse.replication.slave.storage.appservice import SlavedApplicationServiceStore
 from synapse.replication.slave.storage.client_ips import SlavedClientIpStore
 from synapse.replication.slave.storage.registration import SlavedRegistrationStore
+from synapse.replication.slave.storage.room import RoomStore
 from synapse.replication.slave.storage.transactions import SlavedTransactionStore
 from synapse.replication.tcp.client import ReplicationClientHandler
 from synapse.rest.admin import register_servlets_for_media_repo
@@ -47,6 +48,7 @@ logger = logging.getLogger("synapse.app.media_repository")
 
 
 class MediaRepositorySlavedStore(
+    RoomStore,
     SlavedApplicationServiceStore,
     SlavedRegistrationStore,
     SlavedClientIpStore,
diff --git a/synapse/config/server.py b/synapse/config/server.py
index 38f6ff9edc..9ac112233b 100644
--- a/synapse/config/server.py
+++ b/synapse/config/server.py
@@ -948,17 +948,17 @@ class ServerConfig(Config):
           #
           # The rationale for this per-job configuration is that some rooms might have a
           # retention policy with a low 'max_lifetime', where history needs to be purged
-          # of outdated messages on a very frequent basis (e.g. every 5min), but not want
-          # that purge to be performed by a job that's iterating over every room it knows,
-          # which would be quite heavy on the server.
+          # of outdated messages on a more frequent basis than for the rest of the rooms
+          # (e.g. every 12h), but not want that purge to be performed by a job that's
+          # iterating over every room it knows, which could be heavy on the server.
           #
           #purge_jobs:
           #  - shortest_max_lifetime: 1d
           #    longest_max_lifetime: 3d
-          #    interval: 5m:
+          #    interval: 12h
           #  - shortest_max_lifetime: 3d
           #    longest_max_lifetime: 1y
-          #    interval: 24h
+          #    interval: 1d
         """
             % locals()
         )
diff --git a/synapse/handlers/admin.py b/synapse/handlers/admin.py
index 1a4ba12385..76d18a8ba8 100644
--- a/synapse/handlers/admin.py
+++ b/synapse/handlers/admin.py
@@ -51,6 +51,15 @@ class AdminHandler(BaseHandler):
 
         return ret
 
+    async def get_user(self, user):
+        """Function to get user details"""
+        ret = await self.store.get_user_by_id(user.to_string())
+        if ret:
+            profile = await self.store.get_profileinfo(user.localpart)
+            ret["displayname"] = profile.display_name
+            ret["avatar_url"] = profile.avatar_url
+        return ret
+
     async def get_users(self):
         """Function to retrieve a list of users in users table.
 
diff --git a/synapse/handlers/groups_local.py b/synapse/handlers/groups_local.py
index 92fecbfc44..319565510f 100644
--- a/synapse/handlers/groups_local.py
+++ b/synapse/handlers/groups_local.py
@@ -130,6 +130,8 @@ class GroupsLocalHandler(object):
                 res = yield self.transport_client.get_group_summary(
                     get_domain_from_id(group_id), group_id, requester_user_id
                 )
+            except HttpResponseException as e:
+                raise e.to_synapse_error()
             except RequestSendFailed:
                 raise SynapseError(502, "Failed to contact group server")
 
@@ -190,6 +192,8 @@ class GroupsLocalHandler(object):
                 res = yield self.transport_client.create_group(
                     get_domain_from_id(group_id), group_id, user_id, content
                 )
+            except HttpResponseException as e:
+                raise e.to_synapse_error()
             except RequestSendFailed:
                 raise SynapseError(502, "Failed to contact group server")
 
@@ -231,6 +235,8 @@ class GroupsLocalHandler(object):
             res = yield self.transport_client.get_users_in_group(
                 get_domain_from_id(group_id), group_id, requester_user_id
             )
+        except HttpResponseException as e:
+            raise e.to_synapse_error()
         except RequestSendFailed:
             raise SynapseError(502, "Failed to contact group server")
 
@@ -271,6 +277,8 @@ class GroupsLocalHandler(object):
                 res = yield self.transport_client.join_group(
                     get_domain_from_id(group_id), group_id, user_id, content
                 )
+            except HttpResponseException as e:
+                raise e.to_synapse_error()
             except RequestSendFailed:
                 raise SynapseError(502, "Failed to contact group server")
 
@@ -315,6 +323,8 @@ class GroupsLocalHandler(object):
                 res = yield self.transport_client.accept_group_invite(
                     get_domain_from_id(group_id), group_id, user_id, content
                 )
+            except HttpResponseException as e:
+                raise e.to_synapse_error()
             except RequestSendFailed:
                 raise SynapseError(502, "Failed to contact group server")
 
@@ -361,6 +371,8 @@ class GroupsLocalHandler(object):
                     requester_user_id,
                     content,
                 )
+            except HttpResponseException as e:
+                raise e.to_synapse_error()
             except RequestSendFailed:
                 raise SynapseError(502, "Failed to contact group server")
 
@@ -424,6 +436,8 @@ class GroupsLocalHandler(object):
                     user_id,
                     content,
                 )
+            except HttpResponseException as e:
+                raise e.to_synapse_error()
             except RequestSendFailed:
                 raise SynapseError(502, "Failed to contact group server")
 
@@ -460,6 +474,8 @@ class GroupsLocalHandler(object):
                 bulk_result = yield self.transport_client.bulk_get_publicised_groups(
                     get_domain_from_id(user_id), [user_id]
                 )
+            except HttpResponseException as e:
+                raise e.to_synapse_error()
             except RequestSendFailed:
                 raise SynapseError(502, "Failed to contact group server")
 
diff --git a/synapse/rest/admin/__init__.py b/synapse/rest/admin/__init__.py
index c122c449f4..a10b4a9b72 100644
--- a/synapse/rest/admin/__init__.py
+++ b/synapse/rest/admin/__init__.py
@@ -38,6 +38,7 @@ from synapse.rest.admin.users import (
     SearchUsersRestServlet,
     UserAdminServlet,
     UserRegisterServlet,
+    UserRestServletV2,
     UsersRestServlet,
     UsersRestServletV2,
     WhoisRestServlet,
@@ -191,6 +192,7 @@ def register_servlets(hs, http_server):
     SendServerNoticeServlet(hs).register(http_server)
     VersionServlet(hs).register(http_server)
     UserAdminServlet(hs).register(http_server)
+    UserRestServletV2(hs).register(http_server)
     UsersRestServletV2(hs).register(http_server)
 
 
diff --git a/synapse/rest/admin/users.py b/synapse/rest/admin/users.py
index 1937879dbe..574cb90c74 100644
--- a/synapse/rest/admin/users.py
+++ b/synapse/rest/admin/users.py
@@ -102,6 +102,148 @@ class UsersRestServletV2(RestServlet):
         return 200, ret
 
 
+class UserRestServletV2(RestServlet):
+    PATTERNS = (re.compile("^/_synapse/admin/v2/users/(?P<user_id>@[^/]+)$"),)
+
+    """Get request to list user details.
+    This needs user to have administrator access in Synapse.
+
+    GET /_synapse/admin/v2/users/<user_id>
+
+    returns:
+        200 OK with user details if success otherwise an error.
+
+    Put request to allow an administrator to add or modify a user.
+    This needs user to have administrator access in Synapse.
+    We use PUT instead of POST since we already know the id of the user
+    object to create. POST could be used to create guests.
+
+    PUT /_synapse/admin/v2/users/<user_id>
+    {
+        "password": "secret",
+        "displayname": "User"
+    }
+
+    returns:
+        201 OK with new user object if user was created or
+        200 OK with modified user object if user was modified
+        otherwise an error.
+    """
+
+    def __init__(self, hs):
+        self.hs = hs
+        self.auth = hs.get_auth()
+        self.admin_handler = hs.get_handlers().admin_handler
+        self.profile_handler = hs.get_profile_handler()
+        self.set_password_handler = hs.get_set_password_handler()
+        self.deactivate_account_handler = hs.get_deactivate_account_handler()
+        self.registration_handler = hs.get_registration_handler()
+
+    async def on_GET(self, request, user_id):
+        await assert_requester_is_admin(self.auth, request)
+
+        target_user = UserID.from_string(user_id)
+        if not self.hs.is_mine(target_user):
+            raise SynapseError(400, "Can only lookup local users")
+
+        ret = await self.admin_handler.get_user(target_user)
+
+        return 200, ret
+
+    async def on_PUT(self, request, user_id):
+        await assert_requester_is_admin(self.auth, request)
+
+        target_user = UserID.from_string(user_id)
+        body = parse_json_object_from_request(request)
+
+        if not self.hs.is_mine(target_user):
+            raise SynapseError(400, "This endpoint can only be used with local users")
+
+        user = await self.admin_handler.get_user(target_user)
+
+        if user:  # modify user
+            requester = await self.auth.get_user_by_req(request)
+
+            if "displayname" in body:
+                await self.profile_handler.set_displayname(
+                    target_user, requester, body["displayname"], True
+                )
+
+            if "avatar_url" in body:
+                await self.profile_handler.set_avatar_url(
+                    target_user, requester, body["avatar_url"], True
+                )
+
+            if "admin" in body:
+                set_admin_to = bool(body["admin"])
+                if set_admin_to != user["admin"]:
+                    auth_user = requester.user
+                    if target_user == auth_user and not set_admin_to:
+                        raise SynapseError(400, "You may not demote yourself.")
+
+                    await self.admin_handler.set_user_server_admin(
+                        target_user, set_admin_to
+                    )
+
+            if "password" in body:
+                if (
+                    not isinstance(body["password"], text_type)
+                    or len(body["password"]) > 512
+                ):
+                    raise SynapseError(400, "Invalid password")
+                else:
+                    new_password = body["password"]
+                    await self._set_password_handler.set_password(
+                        target_user, new_password, requester
+                    )
+
+            if "deactivated" in body:
+                deactivate = bool(body["deactivated"])
+                if deactivate and not user["deactivated"]:
+                    result = await self.deactivate_account_handler.deactivate_account(
+                        target_user.to_string(), False
+                    )
+                    if not result:
+                        raise SynapseError(500, "Could not deactivate user")
+
+            user = await self.admin_handler.get_user(target_user)
+            return 200, user
+
+        else:  # create user
+            if "password" not in body:
+                raise SynapseError(
+                    400, "password must be specified", errcode=Codes.BAD_JSON
+                )
+            elif (
+                not isinstance(body["password"], text_type)
+                or len(body["password"]) > 512
+            ):
+                raise SynapseError(400, "Invalid password")
+
+            admin = body.get("admin", None)
+            user_type = body.get("user_type", None)
+            displayname = body.get("displayname", None)
+
+            if user_type is not None and user_type not in UserTypes.ALL_USER_TYPES:
+                raise SynapseError(400, "Invalid user type")
+
+            user_id = await self.registration_handler.register_user(
+                localpart=target_user.localpart,
+                password=body["password"],
+                admin=bool(admin),
+                default_display_name=displayname,
+                user_type=user_type,
+            )
+            if "avatar_url" in body:
+                await self.profile_handler.set_avatar_url(
+                    user_id, requester, body["avatar_url"], True
+                )
+
+            ret = await self.admin_handler.get_user(target_user)
+
+            return 201, ret
+
+
 class UserRegisterServlet(RestServlet):
     """
     Attributes:
diff --git a/synapse/storage/data_stores/main/registration.py b/synapse/storage/data_stores/main/registration.py
index 5e8ecac0ea..cb4b2b39a0 100644
--- a/synapse/storage/data_stores/main/registration.py
+++ b/synapse/storage/data_stores/main/registration.py
@@ -52,11 +52,13 @@ class RegistrationWorkerStore(SQLBaseStore):
                 "name",
                 "password_hash",
                 "is_guest",
+                "admin",
                 "consent_version",
                 "consent_server_notice_sent",
                 "appservice_id",
                 "creation_ts",
                 "user_type",
+                "deactivated",
             ],
             allow_none=True,
             desc="get_user_by_id",
diff --git a/synapse/storage/data_stores/main/room.py b/synapse/storage/data_stores/main/room.py
index 79cfd39194..8636d75030 100644
--- a/synapse/storage/data_stores/main/room.py
+++ b/synapse/storage/data_stores/main/room.py
@@ -366,6 +366,134 @@ class RoomWorkerStore(SQLBaseStore):
 
         defer.returnValue(row)
 
+    def get_media_mxcs_in_room(self, room_id):
+        """Retrieves all the local and remote media MXC URIs in a given room
+
+        Args:
+            room_id (str)
+
+        Returns:
+            The local and remote media as a lists of tuples where the key is
+            the hostname and the value is the media ID.
+        """
+
+        def _get_media_mxcs_in_room_txn(txn):
+            local_mxcs, remote_mxcs = self._get_media_mxcs_in_room_txn(txn, room_id)
+            local_media_mxcs = []
+            remote_media_mxcs = []
+
+            # Convert the IDs to MXC URIs
+            for media_id in local_mxcs:
+                local_media_mxcs.append("mxc://%s/%s" % (self.hs.hostname, media_id))
+            for hostname, media_id in remote_mxcs:
+                remote_media_mxcs.append("mxc://%s/%s" % (hostname, media_id))
+
+            return local_media_mxcs, remote_media_mxcs
+
+        return self.db.runInteraction(
+            "get_media_ids_in_room", _get_media_mxcs_in_room_txn
+        )
+
+    def quarantine_media_ids_in_room(self, room_id, quarantined_by):
+        """For a room loops through all events with media and quarantines
+        the associated media
+        """
+
+        def _quarantine_media_in_room_txn(txn):
+            local_mxcs, remote_mxcs = self._get_media_mxcs_in_room_txn(txn, room_id)
+            total_media_quarantined = 0
+
+            # Now update all the tables to set the quarantined_by flag
+
+            txn.executemany(
+                """
+                UPDATE local_media_repository
+                SET quarantined_by = ?
+                WHERE media_id = ?
+            """,
+                ((quarantined_by, media_id) for media_id in local_mxcs),
+            )
+
+            txn.executemany(
+                """
+                    UPDATE remote_media_cache
+                    SET quarantined_by = ?
+                    WHERE media_origin = ? AND media_id = ?
+                """,
+                (
+                    (quarantined_by, origin, media_id)
+                    for origin, media_id in remote_mxcs
+                ),
+            )
+
+            total_media_quarantined += len(local_mxcs)
+            total_media_quarantined += len(remote_mxcs)
+
+            return total_media_quarantined
+
+        return self.db.runInteraction(
+            "quarantine_media_in_room", _quarantine_media_in_room_txn
+        )
+
+    def _get_media_mxcs_in_room_txn(self, txn, room_id):
+        """Retrieves all the local and remote media MXC URIs in a given room
+
+        Args:
+            txn (cursor)
+            room_id (str)
+
+        Returns:
+            The local and remote media as a lists of tuples where the key is
+            the hostname and the value is the media ID.
+        """
+        mxc_re = re.compile("^mxc://([^/]+)/([^/#?]+)")
+
+        sql = """
+            SELECT stream_ordering, json FROM events
+            JOIN event_json USING (room_id, event_id)
+            WHERE room_id = ?
+                %(where_clause)s
+                AND contains_url = ? AND outlier = ?
+            ORDER BY stream_ordering DESC
+            LIMIT ?
+        """
+        txn.execute(sql % {"where_clause": ""}, (room_id, True, False, 100))
+
+        local_media_mxcs = []
+        remote_media_mxcs = []
+
+        while True:
+            next_token = None
+            for stream_ordering, content_json in txn:
+                next_token = stream_ordering
+                event_json = json.loads(content_json)
+                content = event_json["content"]
+                content_url = content.get("url")
+                thumbnail_url = content.get("info", {}).get("thumbnail_url")
+
+                for url in (content_url, thumbnail_url):
+                    if not url:
+                        continue
+                    matches = mxc_re.match(url)
+                    if matches:
+                        hostname = matches.group(1)
+                        media_id = matches.group(2)
+                        if hostname == self.hs.hostname:
+                            local_media_mxcs.append(media_id)
+                        else:
+                            remote_media_mxcs.append((hostname, media_id))
+
+            if next_token is None:
+                # We've gone through the whole room, so we're finished.
+                break
+
+            txn.execute(
+                sql % {"where_clause": "AND stream_ordering < ?"},
+                (room_id, next_token, True, False, 100),
+            )
+
+        return local_media_mxcs, remote_media_mxcs
+
 
 class RoomBackgroundUpdateStore(SQLBaseStore):
     REMOVE_TOMESTONED_ROOMS_BG_UPDATE = "remove_tombstoned_rooms_from_directory"
@@ -810,126 +938,6 @@ class RoomStore(RoomBackgroundUpdateStore, RoomWorkerStore, SearchStore):
             (room_id,),
         )
 
-    def get_media_mxcs_in_room(self, room_id):
-        """Retrieves all the local and remote media MXC URIs in a given room
-
-        Args:
-            room_id (str)
-
-        Returns:
-            The local and remote media as a lists of tuples where the key is
-            the hostname and the value is the media ID.
-        """
-
-        def _get_media_mxcs_in_room_txn(txn):
-            local_mxcs, remote_mxcs = self._get_media_mxcs_in_room_txn(txn, room_id)
-            local_media_mxcs = []
-            remote_media_mxcs = []
-
-            # Convert the IDs to MXC URIs
-            for media_id in local_mxcs:
-                local_media_mxcs.append("mxc://%s/%s" % (self.hs.hostname, media_id))
-            for hostname, media_id in remote_mxcs:
-                remote_media_mxcs.append("mxc://%s/%s" % (hostname, media_id))
-
-            return local_media_mxcs, remote_media_mxcs
-
-        return self.db.runInteraction(
-            "get_media_ids_in_room", _get_media_mxcs_in_room_txn
-        )
-
-    def quarantine_media_ids_in_room(self, room_id, quarantined_by):
-        """For a room loops through all events with media and quarantines
-        the associated media
-        """
-
-        def _quarantine_media_in_room_txn(txn):
-            local_mxcs, remote_mxcs = self._get_media_mxcs_in_room_txn(txn, room_id)
-            total_media_quarantined = 0
-
-            # Now update all the tables to set the quarantined_by flag
-
-            txn.executemany(
-                """
-                UPDATE local_media_repository
-                SET quarantined_by = ?
-                WHERE media_id = ?
-            """,
-                ((quarantined_by, media_id) for media_id in local_mxcs),
-            )
-
-            txn.executemany(
-                """
-                    UPDATE remote_media_cache
-                    SET quarantined_by = ?
-                    WHERE media_origin = ? AND media_id = ?
-                """,
-                (
-                    (quarantined_by, origin, media_id)
-                    for origin, media_id in remote_mxcs
-                ),
-            )
-
-            total_media_quarantined += len(local_mxcs)
-            total_media_quarantined += len(remote_mxcs)
-
-            return total_media_quarantined
-
-        return self.db.runInteraction(
-            "quarantine_media_in_room", _quarantine_media_in_room_txn
-        )
-
-    def _get_media_mxcs_in_room_txn(self, txn, room_id):
-        """Retrieves all the local and remote media MXC URIs in a given room
-
-        Args:
-            txn (cursor)
-            room_id (str)
-
-        Returns:
-            The local and remote media as a lists of tuples where the key is
-            the hostname and the value is the media ID.
-        """
-        mxc_re = re.compile("^mxc://([^/]+)/([^/#?]+)")
-
-        next_token = self.get_current_events_token() + 1
-        local_media_mxcs = []
-        remote_media_mxcs = []
-
-        while next_token:
-            sql = """
-                SELECT stream_ordering, json FROM events
-                JOIN event_json USING (room_id, event_id)
-                WHERE room_id = ?
-                    AND stream_ordering < ?
-                    AND contains_url = ? AND outlier = ?
-                ORDER BY stream_ordering DESC
-                LIMIT ?
-            """
-            txn.execute(sql, (room_id, next_token, True, False, 100))
-
-            next_token = None
-            for stream_ordering, content_json in txn:
-                next_token = stream_ordering
-                event_json = json.loads(content_json)
-                content = event_json["content"]
-                content_url = content.get("url")
-                thumbnail_url = content.get("info", {}).get("thumbnail_url")
-
-                for url in (content_url, thumbnail_url):
-                    if not url:
-                        continue
-                    matches = mxc_re.match(url)
-                    if matches:
-                        hostname = matches.group(1)
-                        media_id = matches.group(2)
-                        if hostname == self.hs.hostname:
-                            local_media_mxcs.append(media_id)
-                        else:
-                            remote_media_mxcs.append((hostname, media_id))
-
-        return local_media_mxcs, remote_media_mxcs
-
     @defer.inlineCallbacks
     def get_rooms_for_retention_period_in_range(
         self, min_ms, max_ms, include_null=False
diff --git a/tests/rest/admin/test_admin.py b/tests/rest/admin/test_admin.py
index 325bd6a608..6ceb483aa8 100644
--- a/tests/rest/admin/test_admin.py
+++ b/tests/rest/admin/test_admin.py
@@ -13,14 +13,11 @@
 # 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.http.server import JsonResource
 from synapse.rest.admin import VersionServlet
 from synapse.rest.client.v1 import events, login, room
@@ -47,341 +44,6 @@ class VersionTestCase(unittest.HomeserverTestCase):
         )
 
 
-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=(0, []))
-
-        self.secrets = Mock()
-
-        self.hs = self.setup_test_homeserver()
-
-        self.hs.config.registration_shared_secret = "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": "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": "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 UsersListTestCase(unittest.HomeserverTestCase):
-
-    servlets = [
-        synapse.rest.admin.register_servlets,
-        login.register_servlets,
-    ]
-    url = "/_synapse/admin/v2/users"
-
-    def prepare(self, reactor, clock, hs):
-        self.admin_user = self.register_user("admin", "pass", admin=True)
-        self.admin_user_tok = self.login("admin", "pass")
-
-        self.register_user("user1", "pass1", admin=False)
-        self.register_user("user2", "pass2", admin=False)
-
-    def test_no_auth(self):
-        """
-        Try to list users without authentication.
-        """
-        request, channel = self.make_request("GET", self.url, b"{}")
-        self.render(request)
-
-        self.assertEqual(401, int(channel.result["code"]), msg=channel.result["body"])
-        self.assertEqual("M_MISSING_TOKEN", channel.json_body["errcode"])
-
-    def test_all_users(self):
-        """
-        List all users, including deactivated users.
-        """
-        request, channel = self.make_request(
-            "GET",
-            self.url + "?deactivated=true",
-            b"{}",
-            access_token=self.admin_user_tok,
-        )
-        self.render(request)
-
-        self.assertEqual(200, int(channel.result["code"]), msg=channel.result["body"])
-        self.assertEqual(3, len(channel.json_body["users"]))
-
-
 class ShutdownRoomTestCase(unittest.HomeserverTestCase):
     servlets = [
         synapse.rest.admin.register_servlets_for_client_rest_resource,
diff --git a/tests/rest/admin/test_user.py b/tests/rest/admin/test_user.py
new file mode 100644
index 0000000000..7352d609e6
--- /dev/null
+++ b/tests/rest/admin/test_user.py
@@ -0,0 +1,465 @@
+# -*- 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 login
+
+from tests import unittest
+
+
+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=(0, []))
+
+        self.secrets = Mock()
+
+        self.hs = self.setup_test_homeserver()
+
+        self.hs.config.registration_shared_secret = "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": "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": "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 UsersListTestCase(unittest.HomeserverTestCase):
+
+    servlets = [
+        synapse.rest.admin.register_servlets,
+        login.register_servlets,
+    ]
+    url = "/_synapse/admin/v2/users"
+
+    def prepare(self, reactor, clock, hs):
+        self.admin_user = self.register_user("admin", "pass", admin=True)
+        self.admin_user_tok = self.login("admin", "pass")
+
+        self.register_user("user1", "pass1", admin=False)
+        self.register_user("user2", "pass2", admin=False)
+
+    def test_no_auth(self):
+        """
+        Try to list users without authentication.
+        """
+        request, channel = self.make_request("GET", self.url, b"{}")
+        self.render(request)
+
+        self.assertEqual(401, int(channel.result["code"]), msg=channel.result["body"])
+        self.assertEqual("M_MISSING_TOKEN", channel.json_body["errcode"])
+
+    def test_all_users(self):
+        """
+        List all users, including deactivated users.
+        """
+        request, channel = self.make_request(
+            "GET",
+            self.url + "?deactivated=true",
+            b"{}",
+            access_token=self.admin_user_tok,
+        )
+        self.render(request)
+
+        self.assertEqual(200, int(channel.result["code"]), msg=channel.result["body"])
+        self.assertEqual(3, len(channel.json_body["users"]))
+
+
+class UserRestTestCase(unittest.HomeserverTestCase):
+
+    servlets = [
+        synapse.rest.admin.register_servlets,
+        login.register_servlets,
+    ]
+
+    def prepare(self, reactor, clock, hs):
+        self.store = hs.get_datastore()
+
+        self.url = "/_synapse/admin/v2/users/@bob:test"
+
+        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_requester_is_no_admin(self):
+        """
+        If the user is not a server admin, an error is returned.
+        """
+        self.hs.config.registration_shared_secret = None
+
+        request, channel = self.make_request(
+            "GET", self.url, access_token=self.other_user_token,
+        )
+        self.render(request)
+
+        self.assertEqual(403, int(channel.result["code"]), msg=channel.result["body"])
+        self.assertEqual("You are not a server admin", channel.json_body["error"])
+
+        request, channel = self.make_request(
+            "PUT", self.url, access_token=self.other_user_token, content=b"{}",
+        )
+        self.render(request)
+
+        self.assertEqual(403, int(channel.result["code"]), msg=channel.result["body"])
+        self.assertEqual("You are not a server admin", channel.json_body["error"])
+
+    def test_requester_is_admin(self):
+        """
+        If the user is a server admin, a new user is created.
+        """
+        self.hs.config.registration_shared_secret = None
+
+        body = json.dumps({"password": "abc123", "admin": True})
+
+        # Create user
+        request, channel = self.make_request(
+            "PUT",
+            self.url,
+            access_token=self.admin_user_tok,
+            content=body.encode(encoding="utf_8"),
+        )
+        self.render(request)
+
+        self.assertEqual(201, int(channel.result["code"]), msg=channel.result["body"])
+        self.assertEqual("@bob:test", channel.json_body["name"])
+        self.assertEqual("bob", channel.json_body["displayname"])
+
+        # Get user
+        request, channel = self.make_request(
+            "GET", self.url, access_token=self.admin_user_tok,
+        )
+        self.render(request)
+
+        self.assertEqual(200, int(channel.result["code"]), msg=channel.result["body"])
+        self.assertEqual("@bob:test", channel.json_body["name"])
+        self.assertEqual("bob", channel.json_body["displayname"])
+        self.assertEqual(1, channel.json_body["admin"])
+        self.assertEqual(0, channel.json_body["is_guest"])
+        self.assertEqual(0, channel.json_body["deactivated"])
+
+        # Modify user
+        body = json.dumps({"displayname": "foobar", "deactivated": True})
+
+        request, channel = self.make_request(
+            "PUT",
+            self.url,
+            access_token=self.admin_user_tok,
+            content=body.encode(encoding="utf_8"),
+        )
+        self.render(request)
+
+        self.assertEqual(200, int(channel.result["code"]), msg=channel.result["body"])
+        self.assertEqual("@bob:test", channel.json_body["name"])
+        self.assertEqual("foobar", channel.json_body["displayname"])
+        self.assertEqual(True, channel.json_body["deactivated"])
+
+        # Get user
+        request, channel = self.make_request(
+            "GET", self.url, access_token=self.admin_user_tok,
+        )
+        self.render(request)
+
+        self.assertEqual(200, int(channel.result["code"]), msg=channel.result["body"])
+        self.assertEqual("@bob:test", channel.json_body["name"])
+        self.assertEqual("foobar", channel.json_body["displayname"])
+        self.assertEqual(1, channel.json_body["admin"])
+        self.assertEqual(0, channel.json_body["is_guest"])
+        self.assertEqual(1, channel.json_body["deactivated"])
diff --git a/tests/storage/test_registration.py b/tests/storage/test_registration.py
index ed5786865a..71a40a0a49 100644
--- a/tests/storage/test_registration.py
+++ b/tests/storage/test_registration.py
@@ -43,12 +43,14 @@ class RegistrationStoreTestCase(unittest.TestCase):
                 # TODO(paul): Surely this field should be 'user_id', not 'name'
                 "name": self.user_id,
                 "password_hash": self.pwhash,
+                "admin": 0,
                 "is_guest": 0,
                 "consent_version": None,
                 "consent_server_notice_sent": None,
                 "appservice_id": None,
                 "creation_ts": 1000,
                 "user_type": None,
+                "deactivated": 0,
             },
             (yield self.store.get_user_by_id(self.user_id)),
         )