pySim-shell: Make 'apdu' command use logical (and secure) channel

The 'apdu' command so far bypassed the logical channel and also
the recently-introduced support for secure channels.  Let's change
that, at least by default.  If somebody wants a raw APDU without
secure / logical channel processing, they may use the --raw option.

Change-Id: Id0c364f772c31e11e8dfa21624d8685d253220d0
diff --git a/pySim-shell.py b/pySim-shell.py
index abe0b5f..89fdf6e 100755
--- a/pySim-shell.py
+++ b/pySim-shell.py
@@ -237,6 +237,7 @@
     apdu_cmd_parser = argparse.ArgumentParser()
     apdu_cmd_parser.add_argument('APDU', type=is_hexstr, help='APDU as hex string')
     apdu_cmd_parser.add_argument('--expect-sw', help='expect a specified status word', type=str, default=None)
+    apdu_cmd_parser.add_argument('--raw', help='Bypass the logical channel (and secure channel)', action='store_true')
 
     @cmd2.with_argparser(apdu_cmd_parser)
     def do_apdu(self, opts):
@@ -249,7 +250,10 @@
         # noted that the apdu command plays an exceptional role since it is the only card accessing command that
         # can be executed without the presence of a runtime state (self.rs) object. However, this also means that
         # self.lchan is also not present (see method equip).
-        data, sw = self.card._scc.send_apdu(opts.APDU)
+        if opts.raw:
+            data, sw = self.card._scc.send_apdu(opts.APDU)
+        else:
+            data, sw = self.lchan.scc.send_apdu(opts.APDU)
         if data:
             self.poutput("SW: %s, RESP: %s" % (sw, data))
         else: