feat(scan-sessions): add fast search option, which only searches once…

… from each session, ignoring the remaining stack

src/gallia/udscan/scanner/scan_sessions.py

@@ -48,6 +48,11 @@ def add_parser(self) -> None:
         self.parser.add_argument(
             "--reset", action="store_true", help="Reset the ECU after each iteration"
         )
+        self.parser.add_argument(
+            "--fast",
+            action="store_true",
+            help="Only search for new sessions once in a particular session, i.e. ignore different stacks",
+        )
 
     async def set_session_with_hooks_handling(
         self, session: int, use_hooks: bool
@@ -105,6 +110,7 @@ async def main(self, args: Namespace) -> None:
         positive_results: list[dict] = []
         negative_results: list[dict] = []
         activated_sessions: set[int] = set()
+        search_sessions: list[int] = []
 
         sessions = list(range(1, 0x80))
         depth = 0
@@ -117,6 +123,11 @@ async def main(self, args: Namespace) -> None:
             self.logger.log_summary(f"Depth: {depth}")
 
             for stack in found[depth - 1]:
+                if args.fast and stack[-1] in search_sessions:
+                    continue
+
+                search_sessions.append(stack[-1])
+
                 if stack:
                     self.logger.log_summary(
                         f"Starting from session: {g_repr(stack[-1])}"