From e4a6eafc6fed4bc415e17bf58a4240df0171fd64 Mon Sep 17 00:00:00 2001
From: Harald Welte <laforge@osmocom.org>
Date: Fri, 11 Feb 2022 16:29:32 +0100
Subject: [PATCH] tlv: Don't raise exception if somebody passes empty data to
 TLV decoder

Change-Id: Id46994029d9b3cd6b67f4f7ee619466602cc8142
---
 pySim/tlv.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pySim/tlv.py b/pySim/tlv.py
index dc8cc4fd..4de5046d 100644
--- a/pySim/tlv.py
+++ b/pySim/tlv.py
@@ -232,6 +232,8 @@ class TLV_IE(IE):
         return self._encode_tag() + self._encode_len(val) + val
 
     def from_tlv(self, do: bytes):
+        if len(do) == 0:
+            return {}, b''
         (rawtag, remainder) = self.__class__._parse_tag_raw(do)
         if rawtag:
             if rawtag != self.tag: