From cd511e7ba285c406d663b7448f6bae98912d0626 Mon Sep 17 00:00:00 2001
From: Rodrigo Nascimento <rodrigoknascimento@gmail.com>
Date: Tue, 26 Jul 2016 14:51:15 -0300
Subject: [PATCH] Use cache for `canAccessRoom` isntead of username list

---
 .../server/functions/canAccessRoom.js                        | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/packages/rocketchat-authorization/server/functions/canAccessRoom.js b/packages/rocketchat-authorization/server/functions/canAccessRoom.js
index e010678f67a..916c9a06b3d 100644
--- a/packages/rocketchat-authorization/server/functions/canAccessRoom.js
+++ b/packages/rocketchat-authorization/server/functions/canAccessRoom.js
@@ -1,7 +1,10 @@
 /* globals RocketChat */
 RocketChat.authz.roomAccessValidators = [
 	function(room, user) {
-		return room.usernames.indexOf(user.username) !== -1;
+		const subscription = RocketChat.cache.Subscriptions.findOneByRidAndUserId(room._id, user._id);
+		if (subscription) {
+			return subscription._room;
+		}
 	},
 	function(room, user) {
 		if (room.t === 'c') {