Add packaged per-camera X4 wake and preview recovery

plugins/insta360-x4/packaging/ble_wake.py

@@ -3,6 +3,7 @@
 import hashlib
 import json
 import re
+import signal
 import sys
 from pathlib import Path
 
@@ -33,7 +34,9 @@ def wake_payload(target):
     ident = "instax4_" + hashlib.sha256(serial.encode()).hexdigest()[:32]
     if target["device_id"] != ident or target["wakeup_enabled"] is not True:
         raise ValueError("USB identity and enabled camera wakeup must be confirmed")
-    if not re.fullmatch(r"(?:[0-9A-F]{2}:){5}[0-9A-F]{2}", target["bluetooth_address"]):
+    if target["bluetooth_address"] is not None and not re.fullmatch(
+        r"(?:[0-9A-F]{2}:){5}[0-9A-F]{2}", target["bluetooth_address"]
+    ):
         raise ValueError("Prior correlated Bluetooth address is required")
     # Company ID 0x004c is passed separately to BlueZ. X4 remote spec section1.
     return (
@@ -189,6 +192,10 @@ def run(target, report):
 
 
 def main():
+    def cancel(*_):
+        raise RuntimeError("Wake cancelled")
+
+    signal.signal(signal.SIGTERM, cancel)
     report = {
         "schema": "missioncore.insta360.ble-wake/v1",
         "started": timestamp(),