pySim.apdu.ts_102_221: Decode the ENVELOPE command body using pySim.cat TLV

This will decode the ENVELOPE body in pySim-trace further.

Before:

00 ENVELOPE                                             -        9000 {'p1': 0, 'p2': 0, 'cmd': 'd14682028381060291978b3c40048111227ff6407070611535002d02700000281516011212000001eae1bd578fa25791898128811b2206cc71639ca292ec2526da8aef4273d2fe2e', 'rsp': '027100001f0a00000100000001200000ab12800101230d08a0000001510000000f829000'}

After:

00 ENVELOPE                                             -        9000 {'p1': 0, 'p2': 0, 'cmd': [{'smspp_download': [{'device_identities': {'source_dev_id': 'network', 'dest_dev_id': 'uicc'}}, {'address': {'ton_npi': 145, 'call_number': '79'}}, {'sms_tpdu': {'tpdu': '40048111227ff6407070611535002d02700000281516011212000001eae1bd578fa25791898128811b2206cc71639ca292ec2526da8aef4273d2fe2e'}}]}], 'rsp': '027100001f0a00000100000001200000ab12800101230d08a0000001510000000f829000'}

Change-Id: I5ecdbe0b5fa8856cb723569896b73cd49778ed5f
---
M pySim/apdu/ts_102_221.py
1 file changed, 22 insertions(+), 1 deletion(-)

diff --git a/pySim/apdu/ts_102_221.py b/pySim/apdu/ts_102_221.py
index 52d88d2..5636da2 100644
--- a/pySim/apdu/ts_102_221.py
+++ b/pySim/apdu/ts_102_221.py
@@ -1,7 +1,7 @@
 # coding=utf-8
 """APDU definitions/decoders of ETSI TS 102 221, the core UICC spec.
 
-(C) 2022 by Harald Welte <laforge@osmocom.org>
+(C) 2022-2024 by Harald Welte <laforge@osmocom.org>
 
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -27,6 +27,7 @@
 from pySim.runtime import RuntimeLchan
 from pySim.apdu import ApduCommand, ApduCommandSet
 from pySim.utils import i2h
+from pySim import cat
 
 logger = logging.getLogger(__name__)
 
@@ -458,6 +459,7 @@
 # TS 102 221 Section 11.2.2 / TS 102 223
 class Envelope(ApduCommand, n='ENVELOPE', ins=0xC2, cla=['80']):
     _apdu_case = 4
+    _tlv = cat.EventCollection
 
 # TS 102 221 Section 11.2.3 / TS 102 223
 class Fetch(ApduCommand, n='FETCH', ins=0x12, cla=['80']):

