From 25b5027dc7916d1236a25993424c58370dba5e42 Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Thu, 31 Jan 2019 15:20:15 +0300
Subject: [PATCH] Only creator can restrict in old groups.

---
 .../SourceFiles/boxes/peers/edit_participants_box.cpp  | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/Telegram/SourceFiles/boxes/peers/edit_participants_box.cpp b/Telegram/SourceFiles/boxes/peers/edit_participants_box.cpp
index 491717754..6a68e10af 100644
--- a/Telegram/SourceFiles/boxes/peers/edit_participants_box.cpp
+++ b/Telegram/SourceFiles/boxes/peers/edit_participants_box.cpp
@@ -1377,13 +1377,19 @@ base::unique_qptr<Ui::PopupMenu> ParticipantsBoxController::rowContextMenu(
 			crl::guard(this, [=] { showAdmin(user); }));
 	}
 	if (_additional.canRestrictUser(user)) {
-		const auto isGroup = _peer->isChat() || _peer->isMegagroup();
-		if (isGroup) {
+		const auto canRestrictWithoutKick = [&] {
+			if (const auto chat = _peer->asChat()) {
+				return chat->amCreator();
+			}
+			return _peer->isMegagroup();
+		}();
+		if (canRestrictWithoutKick) {
 			result->addAction(
 				lang(lng_context_restrict_user),
 				crl::guard(this, [=] { showRestricted(user); }));
 		}
 		if (!_additional.isKicked(user)) {
+			const auto isGroup = _peer->isChat() || _peer->isMegagroup();
 			result->addAction(
 				lang(isGroup
 					? lng_context_remove_from_group