snapshot of https://github.com/RocketChat/Rocket.Chat.git (develop, 2026-09-16; blobs > 131072B omitted)

apps/meteor/server/api/v1/middlewares/remoteAddressMiddleware.ts

@@ -0,0 +1,40 @@
+import type { IncomingMessage } from 'node:http';
+
+import type { Context, MiddlewareHandler } from 'hono';
+
+type HttpBindings = {
+	incoming: IncomingMessage;
+};
+
+const getRemoteAddress = (c: Context) => {
+	const bindings = (c.env?.server ? c.env.server : c.env) as HttpBindings;
+
+	const forwardedFor = c.req.header('x-forwarded-for');
+	const socket = bindings.incoming.socket.remoteAddress || bindings.incoming.connection.remoteAddress;
+	const remoteAddress = c.req.header('x-real-ip') || socket;
+
+	if (!socket) {
+		return remoteAddress || forwardedFor;
+	}
+
+	const httpForwardedCount = parseInt(String(process.env.HTTP_FORWARDED_COUNT)) || 0;
+	if (httpForwardedCount <= 0) {
+		return remoteAddress;
+	}
+
+	if (!forwardedFor || typeof forwardedFor.valueOf() !== 'string') {
+		return remoteAddress;
+	}
+
+	const forwardedForIPs = forwardedFor.split(',').map((ip) => ip.trim());
+	if (httpForwardedCount > forwardedForIPs.length) {
+		return remoteAddress;
+	}
+	return forwardedForIPs[forwardedForIPs.length - httpForwardedCount];
+};
+
+export const remoteAddressMiddleware: MiddlewareHandler = async function (c, next) {
+	const remoteAddress = getRemoteAddress(c);
+	c.set('remoteAddress', remoteAddress);
+	return next();
+};