Support driver country code display

mobile/src/main/java/be/mygod/vpnhotspot/manage/TetherManager.kt

@@ -257,6 +257,9 @@ sealed class TetherManager(protected val parent: TetheringFragment) : Manager(),
                 }.filterNotNull()
                 if (list.isNotEmpty()) result.append(parent.getText(R.string.tethering_manage_wifi_supported_channels)
                     .format(locale, list.joinToString("; ")))
+                if (Build.VERSION.SDK_INT >= 33) capability.countryCode?.let {
+                    result.append(parent.getText(R.string.tethering_manage_wifi_country_code).format(locale, it))
+                }
             }
             result
         } ?: numClients?.let { numClients ->

mobile/src/main/java/be/mygod/vpnhotspot/net/wifi/SoftApCapability.kt

@@ -3,6 +3,8 @@ package be.mygod.vpnhotspot.net.wifi
 import android.os.Parcelable
 import androidx.annotation.RequiresApi
 import be.mygod.vpnhotspot.util.LongConstantLookup
+import be.mygod.vpnhotspot.util.UnblockCentral
+import timber.log.Timber
 
 @JvmInline
 @RequiresApi(30)
@@ -15,6 +17,8 @@ value class SoftApCapability(val inner: Parcelable) {
         private val getSupportedChannelList by lazy {
             clazz.getDeclaredMethod("getSupportedChannelList", Int::class.java)
         }
+        @get:RequiresApi(33)
+        private val getCountryCode by lazy { UnblockCentral.getCountryCode(clazz) }
 
         @RequiresApi(31)
         const val SOFTAP_FEATURE_BAND_24G_SUPPORTED = 32L
@@ -38,4 +42,11 @@ value class SoftApCapability(val inner: Parcelable) {
         return supportedFeatures
     }
     fun getSupportedChannelList(band: Int) = getSupportedChannelList(inner, band) as IntArray
+    @get:RequiresApi(33)
+    val countryCode: String? get() = try {
+        getCountryCode(inner) as String?
+    } catch (e: ReflectiveOperationException) {
+        Timber.w(e)
+        null
+    }
 }

mobile/src/main/java/be/mygod/vpnhotspot/util/UnblockCentral.kt

@@ -21,6 +21,9 @@ object UnblockCentral {
      */
     private val init by lazy { if (needInit) UnblockHelper(app.deviceStorage) }
 
+    @RequiresApi(33)
+    fun getCountryCode(clazz: Class<*>) = init.let { clazz.getDeclaredMethod("getCountryCode") }
+
     @RequiresApi(31)
     fun setUserConfiguration(clazz: Class<*>) = init.let {
         clazz.getDeclaredMethod("setUserConfiguration", Boolean::class.java)