feat(dbus): Add Wi-Fi configuration support to the system config

Introduces the `configure_wifi` function to handle Wi-Fi actions such as
enabling, disabling, and checking status. Updates the `ieee80211`
feature to use the new function, integrating Wi-Fi management into the
existing configuration framework.

src/revpi_middleware/dbus_middleware1/system_config/interface_config.py

@@ -12,6 +12,7 @@ from .revpi_config import (
     configure_dphys_swapfile,
     configure_external_antenna,
     configure_gui,
+    configure_wifi,
     simple_systemd,
 )
 from ..dbus_helper import DbusInterface
@@ -92,7 +93,7 @@ AVAILABLE_FEATURES = {
     ),
     "revpipyload": FeatureFunction(simple_systemd, ["revpipyload.service"]),
     "bluetooth": False,
-    "ieee80211": False,
+    "ieee80211": FeatureFunction(configure_wifi, []),
     "avahi": FeatureFunction(configure_avahi_daemon, []),
     "external-antenna": FeatureFunction(configure_external_antenna, []),
 }

src/revpi_middleware/dbus_middleware1/system_config/revpi_config.py

@@ -314,6 +314,34 @@ def configure_gui(action: ConfigActions):
         raise ValueError(f"action {action} not supported")
 
 
+def configure_wifi(action: ConfigActions):
+    revpi = RevPiConfig()
+
+    if action is ConfigActions.ENABLE:
+        if revpi.rfkill_index is not None:
+            subprocess.call(["rfkill", "unblock", str(revpi.rfkill_index)])
+
+    elif action is ConfigActions.DISABLE:
+        if revpi.rfkill_index is not None:
+            subprocess.call(["rfkill", "block", str(revpi.rfkill_index)])
+
+    elif action is ConfigActions.AVAILABLE:
+        return revpi.with_wifi and revpi.rfkill_index is not None
+
+    elif action is ConfigActions.STATUS:
+        if revpi.rfkill_index is None:
+            return False
+
+        with open(f"/sys/class/rfkill/rfkill{revpi.rfkill_index}/soft", "r") as f:
+            buffer = f.read().strip()
+            return buffer == "0"
+
+    else:
+        raise ValueError(f"action {action} not supported")
+
+    return None
+
+
 def simple_systemd(action: ConfigActions, unit: str):
     bus = SystemBus()
     systemd_manager = bus.get(".systemd1")