pySim-trace: Add support for the TCA Loader log file format

The "TCA Loader" is a freeware utility program published by the
Trusted Connectivity Alliance for testing SCP80, SCP81, SCP02 and SCP03
in UICCs.  It can generate text log files of the APDUs it exchanges;
let's add this file format to pySim-trace

Change-Id: Ie76d36bb18c6bd8968d2a5b74ec1b8c5ccaaa409
---
M pySim-trace.py
A pySim/apdu_source/tca_loader_log.py
2 files changed, 70 insertions(+), 0 deletions(-)

diff --git a/pySim-trace.py b/pySim-trace.py
index 165e338..3257cb7 100755
--- a/pySim-trace.py
+++ b/pySim-trace.py
@@ -20,6 +20,7 @@
 from pySim.apdu_source.gsmtap import GsmtapApduSource
 from pySim.apdu_source.pyshark_rspro import PysharkRsproPcap, PysharkRsproLive
 from pySim.apdu_source.pyshark_gsmtap import PysharkGsmtapPcap
+from pySim.apdu_source.tca_loader_log import TcaLoaderLogApduSource
 
 from pySim.apdu.ts_102_221 import UiccSelect, UiccStatus
 
@@ -181,6 +182,11 @@
 parser_rspro_pyshark_live.add_argument('-i', '--interface', required=True,
                                        help='Name of the network interface to capture on')
 
+parser_tcaloader_log = subparsers.add_parser('tca-loader-log', help="""
+    Read APDUs from a TCA Loader log file.""")
+parser_tcaloader_log.add_argument('-f', '--log-file', required=True,
+                                  help='Name of te log file to be read')
+
 if __name__ == '__main__':
 
     opts = option_parser.parse_args()
@@ -194,6 +200,8 @@
         s = PysharkRsproLive(opts.interface)
     elif opts.source == 'gsmtap-pyshark-pcap':
         s = PysharkGsmtapPcap(opts.pcap_file)
+    elif opts.source == 'tca-loader-log':
+        s = TcaLoaderLogApduSource(opts.log_file)
     else:
         raise ValueError("unsupported source %s", opts.source)
 
diff --git a/pySim/apdu_source/tca_loader_log.py b/pySim/apdu_source/tca_loader_log.py
new file mode 100644
index 0000000..6efc605
--- /dev/null
+++ b/pySim/apdu_source/tca_loader_log.py
@@ -0,0 +1,48 @@
+# 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.gsmtap import GsmtapSource
+
+from pySim.apdu.ts_102_221 import ApduCommands as UiccApduCommands
+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 + UsimApduCommands + GpApduCommands
+
+class TcaLoaderLogApduSource(ApduSource):
+    """ApduSource for reading log files created by TCALoader."""
+    def __init__(self, filename:str):
+        super().__init__()
+        self.logfile = open(filename, 'r')
+
+    def read_packet(self) -> PacketType:
+        command = None
+        response = None
+        for line in self.logfile:
+            if line.startswith('Command'):
+                command = line.split()[1]
+                print("Command: '%s'" % command)
+                pass
+            elif command and line.startswith('Response'):
+                response = line.split()[1]
+                print("Response: '%s'" % response)
+                return ApduCommands.parse_cmd_bytes(h2b(command) + h2b(response))
+        raise StopIteration

