From baf24d1c66c5e91f73af4e5b5410202019f82a8e Mon Sep 17 00:00:00 2001
From: Anna Shaleva <shaleva.ann@nspcc.ru>
Date: Mon, 5 Sep 2022 17:30:58 +0300
Subject: [PATCH] nns: check domain expiration for read functions

Port https://github.com/nspcc-dev/neofs-contract/pull/139/commits/432c02a3696e42a03863dbe3fae2a889ec8224e6.
---
 examples/nft-nd-nns/nns.go | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/examples/nft-nd-nns/nns.go b/examples/nft-nd-nns/nns.go
index f9aaadb44..90ffa08cf 100644
--- a/examples/nft-nd-nns/nns.go
+++ b/examples/nft-nd-nns/nns.go
@@ -448,7 +448,12 @@ func getTokenKey(tokenID []byte) []byte {
 // getNameState returns domain name state by the specified tokenID.
 func getNameState(ctx storage.Context, tokenID []byte) NameState {
 	tokenKey := getTokenKey(tokenID)
-	return getNameStateWithKey(ctx, tokenKey)
+	ns := getNameStateWithKey(ctx, tokenKey)
+	fragments := std.StringSplit(string(tokenID), ".")
+	if parentExpired(ctx, 1, fragments) {
+		panic("parent domain has expired")
+	}
+	return ns
 }
 
 // getNameStateWithKey returns domain name state by the specified token key.