refactor progress

packages/api/src/middleware/RequireXForwardedForMiddleware.tsx

@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import {Config} from '@fluxer/api/src/Config';
+import {Logger} from '@fluxer/api/src/Logger';
+import type {HonoEnv} from '@fluxer/api/src/types/HonoEnv';
+import {stripApiPrefix} from '@fluxer/api/src/utils/RequestPathUtils';
+import {createMiddleware} from 'hono/factory';
+import {HTTPException} from 'hono/http-exception';
+
+interface RequireXForwardedForOptions {
+	exemptPaths?: Array<string>;
+}
+
+const defaultExemptPaths: Array<string> = [
+	'/_health',
+	'/_rpc',
+	'/webhooks/livekit',
+	'/test',
+	'/connections/bluesky/client-metadata.json',
+	'/connections/bluesky/jwks.json',
+];
+
+export function RequireXForwardedForMiddleware({exemptPaths = defaultExemptPaths}: RequireXForwardedForOptions = {}) {
+	return createMiddleware<HonoEnv>(async (ctx, next) => {
+		if (Config.dev.testModeEnabled) {
+			await next();
+			return;
+		}
+
+		const path = stripApiPrefix(ctx.req.path);
+		if (exemptPaths.some((prefix) => path === prefix || path.startsWith(prefix))) {
+			await next();
+			return;
+		}
+
+		const headerValue = ctx.req.header('x-forwarded-for');
+		if (!headerValue || headerValue.trim() === '') {
+			Logger.warn({path}, 'Rejected request without X-Forwarded-For header');
+			throw new HTTPException(403, {message: 'Forbidden'});
+		}
+
+		await next();
+	});
+}