diff --git a/synapse/rest/client/v2_alpha/user_directory.py b/synapse/rest/client/v2_alpha/user_directory.py
index e3603f2998..b6f4d8b3f4 100644
--- a/synapse/rest/client/v2_alpha/user_directory.py
+++ b/synapse/rest/client/v2_alpha/user_directory.py
@@ -21,6 +21,7 @@ from twisted.internet import defer
from synapse.api.errors import SynapseError
from synapse.http.servlet import RestServlet, parse_json_object_from_request
+from synapse.types import UserID
from ._base import client_patterns
@@ -93,5 +94,93 @@ class UserDirectorySearchRestServlet(RestServlet):
defer.returnValue((200, results))
+class UserInfoServlet(RestServlet):
+ """
+ GET /user/{user_id}/info HTTP/1.1
+ """
+ PATTERNS = client_patterns(
+ "/user/(?P<user_id>[^/]*)/info$"
+ )
+
+ def __init__(self, hs):
+ super(UserInfoServlet, self).__init__()
+ self.hs = hs
+ self.auth = hs.get_auth()
+ self.store = hs.get_datastore()
+ self.notifier = hs.get_notifier()
+ self.clock = hs.get_clock()
+ self.transport_layer = hs.get_federation_transport_client()
+ registry = hs.get_federation_registry()
+
+ if not registry.query_handlers.get("user_info"):
+ registry.register_query_handler(
+ "user_info", self._on_federation_query
+ )
+
+ @defer.inlineCallbacks
+ def on_GET(self, request, user_id):
+ # Ensure the user is authenticated
+ yield self.auth.get_user_by_req(request, allow_guest=False)
+
+ user = UserID.from_string(user_id)
+ if not self.hs.is_mine(user):
+ # Attempt to make a federation request to the server that owns this user
+ args = {"user_id": user_id}
+ res = yield self.transport_layer.make_query(
+ user.domain, "user_info", args, retry_on_dns_fail=True,
+ )
+ defer.returnValue((200, res))
+
+ res = yield self._get_user_info(user_id)
+ defer.returnValue((200, res))
+
+ @defer.inlineCallbacks
+ def _on_federation_query(self, args):
+ """Called when a request for user information appears over federation
+
+ Args:
+ args (dict): Dictionary of query arguments provided by the request
+
+ Returns:
+ Deferred[dict]: Deactivation and expiration information for a given user
+ """
+ user_id = args.get("user_id")
+ if not user_id:
+ raise SynapseError(400, "user_id not provided")
+
+ user = UserID.from_string(user_id)
+ if not self.hs.is_mine(user):
+ raise SynapseError(400, "User is not hosted on this homeserver")
+
+ res = yield self._get_user_info(user_id)
+ defer.returnValue(res)
+
+ @defer.inlineCallbacks
+ def _get_user_info(self, user_id):
+ """Retrieve information about a given user
+
+ Args:
+ user_id (str): The User ID of a given user on this homeserver
+
+ Returns:
+ Deferred[dict]: Deactivation and expiration information for a given user
+ """
+ # Check whether user is deactivated
+ is_deactivated = yield self.store.get_user_deactivated_status(user_id)
+
+ # Check whether user is expired
+ expiration_ts = yield self.store.get_expiration_ts_for_user(user_id)
+ is_expired = (
+ expiration_ts is not None and self.clock.time_msec() >= expiration_ts
+ )
+
+ res = {
+ "expired": is_expired,
+ "deactivated": is_deactivated,
+ }
+ defer.returnValue(res)
+
+
def register_servlets(hs, http_server):
UserDirectorySearchRestServlet(hs).register(http_server)
+ UserInfoServlet(hs).register(http_server)
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