vmsdk/python: update cli for event log

* provide extra format option for user to determine the output format
of event logs. Using TCG PCClient by default.

Signed-off-by: Ruoyu Ying <[email protected]>

src/python/cc_event_log_cli.py

@@ -5,6 +5,8 @@
 import argparse
 import os
 from cctrusted_base.api import CCTrustedApi
+from cctrusted_base.eventlog import TcgEventLog
+from cctrusted_base.tcgcel import TcgTpmsCelEvent
 from cctrusted_vm.cvm import ConfidentialVM
 from cctrusted_vm.sdk import CCTrustedVmSdk
 
@@ -28,13 +30,21 @@ def main():
                         help='index of first event log to fetch', dest='start')
     parser.add_argument("-c", type=int, help="number of event logs to fetch",
                         dest="count")
+    parser.add_argument("-f", type=bool, help="enable canonical tlv format", default=False,
+                        dest="cel_format")
     args = parser.parse_args()
 
     event_logs = CCTrustedVmSdk.inst().get_cc_eventlog(args.start, args.count)
     if event_logs is not None:
         LOG.info("Total %d of event logs fetched.", len(event_logs))
         for event in event_logs:
-            event.dump()
+            if isinstance(event, TcgTpmsCelEvent):
+                if args.cel_format:
+                    TcgTpmsCelEvent.encode(event, TcgEventLog.TCG_FORMAT_CEL_TLV).dump()
+                else:
+                    event.to_pcclient_format().dump()
+            else:
+                event.dump()
 
 if __name__ == "__main__":
     main()