Handled expiration date parsing exception

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [3.0.2] - 13 June 2023
+
+### Fixed
+
+* Handled an exception caused by `_check_token()` trying to parse the expiration date from a token that never expires
+
 ## [3.0.1] - 17 May 2023
 
 ### Changed

sync.py

@@ -289,7 +289,11 @@ async def _execute_query(self, query: DocumentNode, variable_values: dict = None
     async def _check_token(self) -> None:
         """Send a `whoami` query to Ghostwriter to check authentication and token expiration."""
         whoami = await self._execute_query(self.whoami_query)
-        expiry = datetime.fromisoformat(whoami["whoami"]["expires"])
+        try:
+            expiry = datetime.fromisoformat(whoami["whoami"]["expires"])
+        except Exception:
+            expiry = whoami["whoami"]["expires"]
+
         await mythic.send_event_log_message(
             mythic=self.mythic_instance,
             message=f"Mythic Sync has successfully authenticated to Ghostwriter. Your configured token expires at: {expiry}",
@@ -299,7 +303,7 @@ async def _check_token(self) -> None:
 
         # Check if the token will expire within 24 hours
         now = datetime.now(timezone.utc)
-        if expiry - now < timedelta(hours=24):
+        if isinstance(expiry, datetime) and expiry - now < timedelta(hours=24):
             mythic_sync_log.debug(f"The provided Ghostwriter API token expires in less than 24 hours ({expiry})!")
             await mythic.send_event_log_message(
                 mythic=self.mythic_instance,