Preliminary support for stacked links

mobile/src/main/java/be/mygod/vpnhotspot/SettingsPreferenceFragment.kt

@@ -20,6 +20,7 @@ import be.mygod.vpnhotspot.preference.SummaryFallbackProvider
 import be.mygod.vpnhotspot.root.Dump
 import be.mygod.vpnhotspot.root.RootManager
 import be.mygod.vpnhotspot.util.Services
+import be.mygod.vpnhotspot.util.allInterfaceNames
 import be.mygod.vpnhotspot.util.launchUrl
 import be.mygod.vpnhotspot.util.showAllowingStateLoss
 import be.mygod.vpnhotspot.widget.SmartSnackbar
@@ -148,8 +149,8 @@ class SettingsPreferenceFragment : PreferenceFragmentCompat() {
             UpstreamMonitor.KEY, FallbackUpstreamMonitor.KEY ->
                 AlwaysAutoCompleteEditTextPreferenceDialogFragment().apply {
                     setArguments(preference.key, Services.connectivity.allNetworks.mapNotNull {
-                        Services.connectivity.getLinkProperties(it)?.interfaceName
-                    }.toTypedArray())
+                        Services.connectivity.getLinkProperties(it)?.allInterfaceNames
+                    }.flatten().toTypedArray())
                     setTargetFragment(this@SettingsPreferenceFragment, 0)
                 }.showAllowingStateLoss(parentFragmentManager, preference.key)
             else -> super.onDisplayPreferenceDialog(preference)

mobile/src/main/java/be/mygod/vpnhotspot/net/monitor/InterfaceMonitor.kt

@@ -2,6 +2,7 @@ package be.mygod.vpnhotspot.net.monitor
 
 import android.net.LinkProperties
 import be.mygod.vpnhotspot.util.Services
+import be.mygod.vpnhotspot.util.allInterfaceNames
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.launch
 
@@ -29,7 +30,7 @@ class InterfaceMonitor(val iface: String) : UpstreamMonitor() {
         private set
     override val currentLinkProperties get() = Services.connectivity.allNetworks
             .map { Services.connectivity.getLinkProperties(it) }
-            .singleOrNull { it?.interfaceName == iface }
+            .singleOrNull { it?.allInterfaceNames?.contains(iface) == true }
 
     override fun registerCallbackLocked(callback: Callback) {
         if (!registered) {

mobile/src/main/java/be/mygod/vpnhotspot/preference/UpstreamsPreference.kt

@@ -14,6 +14,7 @@ import be.mygod.vpnhotspot.R
 import be.mygod.vpnhotspot.net.monitor.FallbackUpstreamMonitor
 import be.mygod.vpnhotspot.net.monitor.UpstreamMonitor
 import be.mygod.vpnhotspot.util.SpanFormatter
+import be.mygod.vpnhotspot.util.allRoutes
 import be.mygod.vpnhotspot.util.parseNumericAddress
 import timber.log.Timber
 
@@ -33,7 +34,7 @@ class UpstreamsPreference(context: Context, attrs: AttributeSet) : Preference(co
         } ?: "∅"
 
         override fun onAvailable(ifname: String, properties: LinkProperties) {
-            currentInterface = Interface(ifname, properties.routes.any {
+            currentInterface = Interface(ifname, properties.allRoutes.any {
                 try {
                     it.matches(internetAddress)
                 } catch (e: RuntimeException) {

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

@@ -4,6 +4,8 @@ import android.annotation.SuppressLint
 import android.annotation.TargetApi
 import android.content.*
 import android.net.InetAddresses
+import android.net.LinkProperties
+import android.net.RouteInfo
 import android.os.Build
 import android.os.Handler
 import android.os.RemoteException
@@ -109,6 +111,13 @@ fun parseNumericAddress(address: String) = if (Build.VERSION.SDK_INT >= 29) {
     InetAddresses.parseNumericAddress(address)
 } else parseNumericAddress(null, address) as InetAddress
 
+private val getAllInterfaceNames by lazy { LinkProperties::class.java.getDeclaredMethod("getAllInterfaceNames") }
+@Suppress("UNCHECKED_CAST")
+val LinkProperties.allInterfaceNames get() = getAllInterfaceNames.invoke(this) as List<String>
+private val getAllRoutes by lazy { LinkProperties::class.java.getDeclaredMethod("getAllRoutes") }
+@Suppress("UNCHECKED_CAST")
+val LinkProperties.allRoutes get() = getAllRoutes.invoke(this) as List<RouteInfo>
+
 fun Context.launchUrl(url: String) {
     if (app.hasTouch) try {
         app.customTabsIntent.launchUrl(this, url.toUri())