pySim-trace: pySim.apdu_source.stdin_hex

This introduces an "APDU source" for pySim-trace which enables the
decoding of APDUs that are copy+pasted from elsewhere, for example
APDU logs in text form created by proprietary tools, or to decode
personalization scripts or the like.

Change-Id: I5aacf13b7c27cea9efd42f01dacca61068c3aa33

pySim/apdu_source/stdin_hex.py

@@ -0,0 +1,39 @@
+# coding=utf-8
+
+# (C) 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
+# the Free Software Foundation, either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+from pySim.utils import h2b
+
+from pySim.apdu.ts_102_221 import ApduCommands as UiccApduCommands
+from pySim.apdu.ts_102_222 import ApduCommands as UiccAdmApduCommands
+from pySim.apdu.ts_31_102 import ApduCommands as UsimApduCommands
+from pySim.apdu.global_platform import ApduCommands as GpApduCommands
+
+from . import ApduSource, PacketType, CardReset
+
+ApduCommands = UiccApduCommands + UiccAdmApduCommands + UsimApduCommands + GpApduCommands
+
+class StdinHexApduSource(ApduSource):
+    """ApduSource for reading apdu hex-strings from stdin."""
+
+    def read_packet(self) -> PacketType:
+        while True:
+            command = input("C-APDU >")
+            if len(command) == 0:
+                continue
+            response = '9000'
+            return ApduCommands.parse_cmd_bytes(h2b(command) + h2b(response))