pySim-shell: Support USIM specific methods/commands on unknown UICC

So far, if no known programmable card (like sysmoISIM) has been found,
we were using the SimCard base class.  However, once we detect an UICC,
we should have switched to the UsimCard class, as otherwise the various
methods called by USIM/ISIM specific commands don't exist and we get
weird 'SimCard' object has no attribute 'update_ust' execptions.

The entire auto-detection and the legacy SimCard / UsimCard classes
are showing the legacy of the code base and should probably be
re-architected.  However, let's fix the apparent bug for now.

Change-Id: I5a863198084250458693f060ca10b268a58550a1
Closes: OS#6055

pySim-shell.py

@@ -49,7 +49,7 @@ from pprint import pprint as pp
 from pySim.exceptions import *
 from pySim.commands import SimCardCommands
 from pySim.transport import init_reader, ApduTracer, argparse_add_reader_args, ProactiveHandler
-from pySim.cards import card_detect, SimCard
+from pySim.cards import card_detect, SimCard, UsimCard
 from pySim.utils import h2b, b2h, i2h, swap_nibbles, rpad, JsonEncoder, bertlv_parse_one, sw_match
 from pySim.utils import sanitize_pin_adm, tabulate_str_list, boxed_heading_str, Hexstr
 from pySim.card_handler import CardHandler, CardHandlerAuto
@@ -127,6 +127,12 @@ def init_card(sl):
         profile.add_application(CardApplicationHPSIM())
         profile.add_application(CardApplicationARAM())
         profile.add_application(CardApplicationISD())
+        # We have chosen SimCard() above, but we now know it actually is an UICC
+        # so it's safe to assume it supports USIM application (which we're adding above).
+        # IF we don't do this, we will have a SimCard but try USIM specific commands like
+        # the update_ust method (see https://osmocom.org/issues/6055)
+        if generic_card:
+            card = UsimCard(scc)
 
     # Create runtime state with card profile
     rs = RuntimeState(card, profile)