Don't send renewal emails to deactivated users

changelog.d/5394.bugfix

@@ -0,0 +1 @@
+Fix a bug where deactivated users could receive renewal emails if the account validity feature is on.

synapse/handlers/account_validity.py

@@ -110,6 +110,9 @@ def _send_renewal_email(self, user_id, expiration_ts):
         # Stop right here if the user doesn't have at least one email address.
         # In this case, they will have to ask their server admin to renew their
         # account manually.
+        # We don't need to do a specific check to make sure the account isn't
+        # deactivated, as a deactivated account isn't supposed to have any
+        # email address attached to it.
         if not addresses:
             return
 

synapse/handlers/deactivate_account.py

@@ -42,6 +42,8 @@ def __init__(self, hs):
         # it left off (if it has work left to do).
         hs.get_reactor().callWhenRunning(self._start_user_parting)
 
+        self._account_validity_enabled = hs.config.account_validity.enabled
+
     @defer.inlineCallbacks
     def deactivate_account(self, user_id, erase_data, id_server=None):
         """Deactivate a user's account
@@ -114,6 +116,13 @@ def deactivate_account(self, user_id, erase_data, id_server=None):
         # parts users from rooms (if it isn't already running)
         self._start_user_parting()
 
+        # Remove all information on the user from the account_validity table.
+        if self._account_validity_enabled:
+            yield self.store.delete_account_validity_for_user(user_id)
+
+        # Mark the user as deactivated.
+        yield self.store.set_user_deactivated_status(user_id, True)
+
         defer.returnValue(identity_server_supports_unbinding)
 
     def _start_user_parting(self):

synapse/storage/_base.py

@@ -299,12 +299,12 @@ def _set_expiration_date_when_missing(self):
 
         def select_users_with_no_expiration_date_txn(txn):
             """Retrieves the list of registered users with no expiration date from the
-            database.
+            database, filtering out deactivated users.
             """
             sql = (
                 "SELECT users.name FROM users"
                 " LEFT JOIN account_validity ON (users.name = account_validity.user_id)"
-                " WHERE account_validity.user_id is NULL;"
+                " WHERE account_validity.user_id is NULL AND users.deactivated = 0;"
             )
             txn.execute(sql, [])
 

synapse/storage/registration.py

@@ -248,6 +248,20 @@ def set_renewal_mail_status(self, user_id, email_sent):
             desc="set_renewal_mail_status",
         )
 
+    @defer.inlineCallbacks
+    def delete_account_validity_for_user(self, user_id):
+        """Deletes the entry for the given user in the account validity table, removing
+        their expiration date and renewal token.
+
+        Args:
+            user_id (str): ID of the user to remove from the account validity table.
+        """
+        yield self._simple_delete_one(
+            table="account_validity",
+            keyvalues={"user_id": user_id},
+            desc="delete_account_validity_for_user",
+        )
+
     @defer.inlineCallbacks
     def is_server_admin(self, user):
         res = yield self._simple_select_one_onecol(

tests/rest/client/v2_alpha/test_register.py

@@ -26,7 +26,7 @@
 from synapse.api.errors import Codes
 from synapse.appservice import ApplicationService
 from synapse.rest.client.v1 import login
-from synapse.rest.client.v2_alpha import account_validity, register, sync
+from synapse.rest.client.v2_alpha import account, account_validity, register, sync
 
 from tests import unittest
 
@@ -308,6 +308,7 @@ class AccountValidityRenewalByEmailTestCase(unittest.HomeserverTestCase):
         login.register_servlets,
         sync.register_servlets,
         account_validity.register_servlets,
+        account.register_servlets,
     ]
 
     def make_homeserver(self, reactor, clock):
@@ -358,20 +359,7 @@ def sendmail(*args, **kwargs):
     def test_renewal_email(self):
         self.email_attempts = []
 
-        user_id = self.register_user("kermit", "monkey")
-        tok = self.login("kermit", "monkey")
-        # We need to manually add an email address otherwise the handler will do
-        # nothing.
-        now = self.hs.clock.time_msec()
-        self.get_success(
-            self.store.user_add_threepid(
-                user_id=user_id,
-                medium="email",
-                address="kermit@example.com",
-                validated_at=now,
-                added_at=now,
-            )
-        )
+        (user_id, tok) = self.create_user()
 
         # Move 6 days forward. This should trigger a renewal email to be sent.
         self.reactor.advance(datetime.timedelta(days=6).total_seconds())
@@ -396,6 +384,44 @@ def test_renewal_email(self):
     def test_manual_email_send(self):
         self.email_attempts = []
 
+        (user_id, tok) = self.create_user()
+        request, channel = self.make_request(
+            b"POST",
+            "/_matrix/client/unstable/account_validity/send_mail",
+            access_token=tok,
+        )
+        self.render(request)
+        self.assertEquals(channel.result["code"], b"200", channel.result)
+
+        self.assertEqual(len(self.email_attempts), 1)
+
+    def test_deactivated_user(self):
+        self.email_attempts = []
+
+        (user_id, tok) = self.create_user()
+
+        request_data = json.dumps({
+            "auth": {
+                "type": "m.login.password",
+                "user": user_id,
+                "password": "monkey",
+            },
+            "erase": False,
+        })
+        request, channel = self.make_request(
+            "POST",
+            "account/deactivate",
+            request_data,
+            access_token=tok,
+        )
+        self.render(request)
+        self.assertEqual(request.code, 200)
+
+        self.reactor.advance(datetime.timedelta(days=8).total_seconds())
+
+        self.assertEqual(len(self.email_attempts), 0)
+
+    def create_user(self):
         user_id = self.register_user("kermit", "monkey")
         tok = self.login("kermit", "monkey")
         # We need to manually add an email address otherwise the handler will do
@@ -410,16 +436,7 @@ def test_manual_email_send(self):
                 added_at=now,
             )
         )
-
-        request, channel = self.make_request(
-            b"POST",
-            "/_matrix/client/unstable/account_validity/send_mail",
-            access_token=tok,
-        )
-        self.render(request)
-        self.assertEquals(channel.result["code"], b"200", channel.result)
-
-        self.assertEqual(len(self.email_attempts), 1)
+        return (user_id, tok)
 
 
 class AccountValidityBackgroundJobTestCase(unittest.HomeserverTestCase):