Tweak to not use js-sdk

src/@types/matrix-js-sdk.d.ts

@@ -15,6 +15,8 @@ import type { EmptyObject } from "matrix-js-sdk/src/matrix";
 import type { DeviceClientInformation } from "../utils/device/types.ts";
 import type { UserWidget } from "../utils/WidgetUtils-types.ts";
 
+type InviteConfigAccountDataRule = "allow" | "block";
+
 // Extend Matrix JS SDK types via Typescript declaration merging to support unspecced event fields and types
 declare module "matrix-js-sdk/src/types" {
     export interface FileInfo {
@@ -60,6 +62,21 @@ declare module "matrix-js-sdk/src/types" {
         };
     }
 
+    export interface InviteConfigAccountData {
+        /**
+         * Rule exceptions for users. Takes priority over `default` and `server_exceptions`.
+         */
+        user_exceptions: Record<string, InviteConfigAccountDataRule>;
+        /**
+         * Rule exceptions for users. Takes priority over `default`.
+         */
+        server_exceptions: Record<string, InviteConfigAccountDataRule>;
+        /**
+         * The default rule for invite handling when no exceptions match.
+         */
+        default: InviteConfigAccountDataRule;
+    }
+
     export interface AccountDataEvents {
         // Analytics account data event
         "im.vector.analytics": {
@@ -87,6 +104,9 @@ declare module "matrix-js-sdk/src/types" {
         "m.accepted_terms": {
             accepted: string[];
         };
+
+        // MSC4155: Invite filtering
+        "org.matrix.msc4155.invite_permission_config": InviteConfigAccountData;
     }
 
     export interface AudioContent {

src/components/views/settings/InviteControlsPanel.tsx

@@ -0,0 +1,62 @@
+/*
+Copyright 2025 New Vector Ltd.
+
+SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only OR LicenseRef-Element-Commercial
+Please see LICENSE files in the repository root for full details.
+*/
+
+import React, { type ChangeEventHandler, type FC, useCallback, useState } from "react";
+import { type AccountDataEvents } from "matrix-js-sdk/src/types";
+import { ErrorMessage, InlineField, Label, Root, ToggleInput } from "@vector-im/compound-web";
+import { logger } from "matrix-js-sdk/src/logger";
+
+import { SettingsSubsection } from "./shared/SettingsSubsection";
+import { _t } from "../../../languageHandler";
+import { useAccountData } from "../../../hooks/useAccountData";
+import { useMatrixClientContext } from "../../../contexts/MatrixClientContext";
+
+
+export const InviteControlsPanel: FC = () => {
+    const client = useMatrixClientContext();
+    const inviteState = useAccountData<AccountDataEvents["org.matrix.msc4155.invite_permission_config"]>(
+        client,
+        "org.matrix.msc4155.invite_permission_config",
+    );
+    const isOn = inviteState.default !== "block";
+    const [hasError, setHasError] = useState(false);
+    const [busy, setBusy] = useState(false);
+
+    const setValue = useCallback<ChangeEventHandler<HTMLInputElement>>(
+        async (e) => {
+            setHasError(false);
+            setBusy(true);
+            try {
+                await client.setAccountData("org.matrix.msc4155.invite_permission_config", {
+                    // Don't remove any other state set by other clients.
+                    ...inviteState,
+                    default: e.target.checked ? "allow" : "block",
+                });
+            } catch (ex) {
+                logger.error("Could not change input config", ex);
+                setHasError(true);
+            } finally {
+                setBusy(false);
+            }
+        },
+        [client, inviteState, isOn],
+    );
+
+    return (
+        <SettingsSubsection heading={_t("settings|invite_controls|title")}>
+            <Root>
+                <InlineField
+                    name="default"
+                    control={<ToggleInput disabled={busy} onChange={setValue} checked={isOn} />}
+                >
+                    <Label>{_t("settings|invite_controls|default_label")}</Label>
+                    {hasError && <ErrorMessage>{_t("settings|invite_controls|error_message")}</ErrorMessage>}
+                </InlineField>
+            </Root>
+        </SettingsSubsection>
+    );
+};

src/components/views/settings/tabs/user/SecurityUserSettingsTab.tsx

@@ -1,5 +1,5 @@
 /*
-Copyright 2024 New Vector Ltd.
+Copyright 2024,2025 New Vector Ltd.
 Copyright 2019-2023 The Matrix.org Foundation C.I.C.
 
 SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only OR LicenseRef-Element-Commercial
@@ -35,6 +35,7 @@ import { SettingsSubsection, SettingsSubsectionText } from "../../shared/Setting
 import { useOwnDevices } from "../../devices/useOwnDevices";
 import { DiscoverySettings } from "../../discovery/DiscoverySettings";
 import SetIntegrationManager from "../../SetIntegrationManager";
+import { InviteControlsPanel } from "../../InviteControlsPanel";
 
 interface IIgnoredUserProps {
     userId: string;
@@ -372,6 +373,7 @@ export default class SecurityUserSettingsTab extends React.Component<IProps, ISt
                     <CryptographyPanel />
                 </SettingsSection>
                 <SettingsSection heading={_t("common|privacy")}>
+                    {SettingsStore.getValue("feature_invite_controls") ? <InviteControlsPanel /> : null}
                     <DiscoverySettings />
                     {posthogSection}
                 </SettingsSection>

src/i18n/strings/en_EN.json

@@ -1509,6 +1509,8 @@
         "group_widgets": "Widgets",
         "hidebold": "Hide notification dot (only display counters badges)",
         "html_topic": "Show HTML representation of room topics",
+        "invite_controls": "Control who is allowed to invite you to rooms",
+        "invite_controls_msc_support": "Requires your server to support MSC4155",
         "join_beta": "Join the beta",
         "join_beta_reload": "Joining the beta will reload %(brand)s.",
         "jump_to_date": "Jump to date (adds /jumptodate and jump to date headers)",
@@ -2684,6 +2686,11 @@
         "inline_url_previews_room_account": "Enable URL previews for this room (only affects you)",
         "insert_trailing_colon_mentions": "Insert a trailing colon after user mentions at the start of a message",
         "invite_avatars": "Show avatars of rooms you have been invited to",
+        "invite_controls": {
+            "default_label": "Allow users to invite you to rooms",
+            "error_message": "An error occured while trying to change this setting",
+            "title": "Invite controls"
+        },
         "jump_to_bottom_on_send": "Jump to the bottom of the timeline when you send a message",
         "key_backup": {
             "backup_in_progress": "Your keys are being backed up (the first backup could take a few minutes).",

src/settings/Settings.tsx

@@ -198,6 +198,7 @@ export interface Settings {
     "feature_html_topic": IFeature;
     "feature_bridge_state": IFeature;
     "feature_jump_to_date": IFeature;
+    "feature_invite_controls": IFeature;
     "feature_sliding_sync": IBaseSetting<boolean>;
     "feature_simplified_sliding_sync": IFeature;
     "feature_element_call_video_rooms": IFeature;
@@ -522,6 +523,21 @@ export const SETTINGS: Settings = {
             _td("labs|jump_to_date_msc_support"),
         ),
     },
+    "feature_invite_controls": {
+        isFeature: true,
+        labsGroup: LabGroup.Rooms,
+        displayName: _td("labs|invite_controls"),
+        supportedLevels: LEVELS_DEVICE_ONLY_SETTINGS_WITH_CONFIG_PRIORITISED,
+        supportedLevelsAreOrdered: true,
+        default: false,
+        controller: new ServerSupportUnstableFeatureController(
+            "feature_invite_controls",
+            defaultWatchManager,
+            [["org.matrix.msc4155"]],
+            "v1.6",
+            _td("labs|invite_controls_msc_support"),
+        ),
+    },
     "RoomList.backgroundImage": {
         supportedLevels: LEVELS_ACCOUNT_SETTINGS,
         default: null,