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

apps/meteor/server/settings/theme/server.ts

@@ -0,0 +1,43 @@
+import crypto from 'node:crypto';
+
+import { Settings } from '@rocket.chat/models';
+import { Meteor } from 'meteor/meteor';
+import { WebApp } from 'meteor/webapp';
+
+import { settings } from '..';
+import { addStyle } from '../../lib/ui-master/inject';
+
+settings.watch('theme-custom-css', (value) => {
+	if (!value || typeof value !== 'string') {
+		addStyle('css-theme', '');
+		return;
+	}
+	addStyle('css-theme', value);
+});
+
+// TODO: Add a migration to remove this setting from the database
+Meteor.startup(async () => {
+	await Settings.deleteMany({ _id: /theme-color/ });
+	await Settings.deleteOne({ _id: /theme-font/ });
+	await Settings.deleteOne({ _id: 'css' });
+});
+
+WebApp.rawConnectHandlers.use((req, res, next) => {
+	const path = req.url?.split('?')[0];
+	const prefix = __meteor_runtime_config__.ROOT_URL_PATH_PREFIX || '';
+
+	if (path !== `${prefix}/theme.css`) {
+		next();
+		return;
+	}
+
+	const style = settings.get('theme-custom-css');
+	if (typeof style !== 'string') {
+		throw new Error('Invalid theme-custom-css setting');
+	}
+
+	res.setHeader('Content-Type', 'text/css; charset=UTF-8');
+	res.setHeader('Content-Length', style.length);
+	res.setHeader('ETag', `"${crypto.createHash('sha1').update(style).digest('hex')}"`);
+	res.end(style, 'utf-8');
+});