From d0476edd06bfb2a7a7f469526c77e5a06583f82d Mon Sep 17 00:00:00 2001
From: fiatjaf <fiatjaf@gmail.com>
Date: Wed, 18 Dec 2024 11:53:10 -0300
Subject: [PATCH] nip19: guard against broken TLVs.

fixes https://github.com/nbd-wtf/go-nostr/issues/161
---
 nip19/utils.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/nip19/utils.go b/nip19/utils.go
index 08aebe1..b182163 100644
--- a/nip19/utils.go
+++ b/nip19/utils.go
@@ -18,6 +18,10 @@ func readTLVEntry(data []byte) (typ uint8, value []byte) {
 
 	typ = data[0]
 	length := int(data[1])
+	if len(data) < 2+length {
+		return typ, nil
+	}
+
 	value = data[2 : 2+length]
 	return
 }