feat: add tunnel details screen and handshake monitoring

Adds details screen which display details of tunnel configuration as well as last handshake and rx/tx of peer.

Adds last handshake monitoring with statuses and thresholds.

Adds handshake/connection notifications based on last successful handshake.

Adds status LED next to tunnel on main screen.

Fixes bug where first click on QR code could result in nothing happening if QR code module is being downloaded. Now shows message to user.

Fixes bug where changes made after editing tunnel were not propagated to settings if that tunnel was configured as the default tunnel.

Fixes bug causing crash if wrong config file selected

Update README

Closes #7, Closes #6

README.md

@@ -27,7 +27,7 @@ This is an alternative Android Application for [WireGuard](https://www.wireguard
 ## Screenshots
 
 <p float="center">
-  <img label="Main" style="padding-right:25px" src="./asset/main_screen.png" width="200" />
+  <img label="Main" style="padding-right:25px" src="asset/main_screen.png" width="200" />
   <img label="Config" style="padding-left:25px" src="./asset/config_screen.png" width="200" />
   <img label="Settings" style="padding-left:25px" src="./asset/settings_screen.png" width="200" />
   <img label="Support" style="padding-left:25px" src="./asset/support_screen.png" width="200" />

app/build.gradle.kts

@@ -16,8 +16,8 @@ android {
     compileSdk = 33
 
     val versionMajor = 2
-    val versionMinor = 0
-    val versionPatch = 3
+    val versionMinor = 1
+    val versionPatch = 1
     val versionBuild = 0
 
     defaultConfig {
@@ -54,7 +54,7 @@ android {
         compose = true
     }
     composeOptions {
-        kotlinCompilerExtensionVersion = "1.4.7"
+        kotlinCompilerExtensionVersion = "1.4.8"
     }
     packaging {
         resources {
@@ -83,7 +83,7 @@ dependencies {
     debugImplementation("androidx.compose.ui:ui-test-manifest")
 
     //wireguard tunnel
-    implementation("com.wireguard.android:tunnel:1.0.20230405")
+    implementation("com.wireguard.android:tunnel:1.0.20230427")
 
     //logging
     implementation("com.jakewharton.timber:timber:5.0.1")
@@ -127,6 +127,7 @@ dependencies {
 
 
 }
+
 kapt {
     correctErrorTypes = true
 }

app/src/main/AndroidManifest.xml

@@ -11,6 +11,7 @@
     <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
+    <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"/>
     <uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION"/>
     <!--foreground service permissions-->
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
@@ -59,12 +60,13 @@
             android:stopWithTask="false"
             android:exported="false">
         </service>
-        <receiver android:enabled="true" android:name=".BootReceiver"
+        <receiver android:enabled="true" android:name=".receiver.BootReceiver"
             android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.BOOT_COMPLETED"/>
             </intent-filter>
         </receiver>
+        <receiver android:exported="false" android:name=".receiver.NotificationActionReceiver"/>
         <meta-data
             android:name="com.google.mlkit.vision.DEPENDENCIES"
             android:value="barcode_ui"/>

app/src/main/java/com/zaneschepke/wireguardautotunnel/receiver/BootReceiver.kt

@@ -1,8 +1,9 @@
-package com.zaneschepke.wireguardautotunnel
+package com.zaneschepke.wireguardautotunnel.receiver
 
 import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
+import com.zaneschepke.wireguardautotunnel.R
 import com.zaneschepke.wireguardautotunnel.repository.Repository
 import com.zaneschepke.wireguardautotunnel.service.foreground.Action
 import com.zaneschepke.wireguardautotunnel.service.foreground.ServiceTracker
@@ -11,7 +12,6 @@ import com.zaneschepke.wireguardautotunnel.service.tunnel.model.Settings
 import com.zaneschepke.wireguardautotunnel.service.tunnel.model.TunnelConfig
 import dagger.hilt.android.AndroidEntryPoint
 import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.DelicateCoroutinesApi
 import kotlinx.coroutines.SupervisorJob
 import kotlinx.coroutines.cancel
 import kotlinx.coroutines.launch
@@ -23,21 +23,19 @@ class BootReceiver : BroadcastReceiver() {
     @Inject
     lateinit var settingsRepo : Repository<Settings>
 
-    @OptIn(DelicateCoroutinesApi::class)
     override fun onReceive(context: Context, intent: Intent) {
         if (intent.action == Intent.ACTION_BOOT_COMPLETED) {
             CoroutineScope(SupervisorJob()).launch {
                 try {
                     val settings = settingsRepo.getAll()
                     if (!settings.isNullOrEmpty()) {
-                        val setting = settings[0]
+                        val setting = settings.first()
                         if (setting.isAutoTunnelEnabled && setting.defaultTunnel != null) {
-                            val defaultTunnel = TunnelConfig.from(setting.defaultTunnel!!)
                             ServiceTracker.actionOnService(
                                 Action.START, context,
                                 WireGuardConnectivityWatcherService::class.java,
                                 mapOf(context.resources.getString(R.string.tunnel_extras_key) to
-                                defaultTunnel.toString())
+                                setting.defaultTunnel!!)
                             )
                         }
                     }

app/src/main/java/com/zaneschepke/wireguardautotunnel/receiver/NotificationActionReceiver.kt

@@ -0,0 +1,56 @@
+package com.zaneschepke.wireguardautotunnel.receiver
+
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import com.zaneschepke.wireguardautotunnel.R
+import com.zaneschepke.wireguardautotunnel.repository.Repository
+import com.zaneschepke.wireguardautotunnel.service.foreground.Action
+import com.zaneschepke.wireguardautotunnel.service.foreground.ServiceTracker
+import com.zaneschepke.wireguardautotunnel.service.foreground.WireGuardTunnelService
+import com.zaneschepke.wireguardautotunnel.service.tunnel.model.Settings
+import dagger.hilt.android.AndroidEntryPoint
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.cancel
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.launch
+import javax.inject.Inject
+
+@AndroidEntryPoint
+class NotificationActionReceiver : BroadcastReceiver() {
+
+    @Inject
+    lateinit var settingsRepo : Repository<Settings>
+    override fun onReceive(context: Context, intent: Intent?) {
+        CoroutineScope(SupervisorJob()).launch {
+            try {
+                val settings = settingsRepo.getAll()
+                if (!settings.isNullOrEmpty()) {
+                    val setting = settings.first()
+                    if (setting.defaultTunnel != null) {
+                        ServiceTracker.actionOnService(
+                            Action.STOP, context,
+                            WireGuardTunnelService::class.java,
+                            mapOf(
+                                context.resources.getString(R.string.tunnel_extras_key) to
+                                        setting.defaultTunnel!!
+                            )
+                        )
+                        delay(1000)
+                        ServiceTracker.actionOnService(
+                            Action.START, context,
+                            WireGuardTunnelService::class.java,
+                            mapOf(
+                                context.resources.getString(R.string.tunnel_extras_key) to
+                                        setting.defaultTunnel!!
+                            )
+                        )
+                    }
+                }
+            } finally {
+                cancel()
+            }
+        }
+    }
+}

app/src/main/java/com/zaneschepke/wireguardautotunnel/service/barcode/QRScanner.kt

@@ -13,6 +13,7 @@ class QRScanner @Inject constructor(private val gmsBarcodeScanner: GmsBarcodeSca
             gmsBarcodeScanner.startScan().addOnSuccessListener {
                 trySend(it.rawValue)
             }.addOnFailureListener {
+                trySend(it.message)
                 Timber.e(it.message)
             }
             awaitClose {

app/src/main/java/com/zaneschepke/wireguardautotunnel/service/foreground/WireGuardConnectivityWatcherService.kt

@@ -20,7 +20,6 @@ import com.zaneschepke.wireguardautotunnel.service.tunnel.VpnService
 import com.zaneschepke.wireguardautotunnel.service.tunnel.model.Settings
 import dagger.hilt.android.AndroidEntryPoint
 import kotlinx.coroutines.CoroutineScope
-import kotlinx.coroutines.DelicateCoroutinesApi
 import kotlinx.coroutines.Job
 import kotlinx.coroutines.SupervisorJob
 import kotlinx.coroutines.launch
@@ -123,7 +122,6 @@ class WireGuardConnectivityWatcherService : ForegroundService() {
         }
     }
 
-    @OptIn(DelicateCoroutinesApi::class)
     private fun startWatcherJob() {
         watcherJob = CoroutineScope(SupervisorJob()).launch {
             val settings = settingsRepo.getAll();
@@ -151,13 +149,17 @@ class WireGuardConnectivityWatcherService : ForegroundService() {
                 is NetworkStatus.CapabilitiesChanged -> {
                     isMobileDataConnected = true
                     Timber.d("Mobile data capabilities changed")
-                    if(!isWifiConnected && setting.isTunnelOnMobileDataEnabled
-                        && vpnService.getState() == Tunnel.State.DOWN)
-                        startVPN()
+                    if(!disconnecting && !connecting) {
+                        if(!isWifiConnected && setting.isTunnelOnMobileDataEnabled
+                            && vpnService.getState() == Tunnel.State.DOWN)
+                            startVPN()
+                    }
                 }
                 is NetworkStatus.Unavailable -> {
                     isMobileDataConnected = false
-                    if(!isWifiConnected && vpnService.getState() == Tunnel.State.UP) stopVPN()
+                    if(!disconnecting && !connecting) {
+                        if(!isWifiConnected && vpnService.getState() == Tunnel.State.UP) stopVPN()
+                    }
                     Timber.d("Lost mobile data connection")
                 }
             }
@@ -178,7 +180,7 @@ class WireGuardConnectivityWatcherService : ForegroundService() {
                             Timber.d("Not connect and not disconnecting")
                             val ssid = wifiService.getNetworkName(it.networkCapabilities);
                             Timber.d("SSID: $ssid")
-                            if ((setting.trustedNetworkSSIDs?.contains(ssid) == false) && vpnService.getState() == Tunnel.State.DOWN) {
+                            if (!setting.trustedNetworkSSIDs.contains(ssid) && vpnService.getState() == Tunnel.State.DOWN) {
                                 Timber.d("Starting VPN Tunnel for untrusted network: $ssid")
                                 startVPN()
                             } else if (!disconnecting && vpnService.getState() == Tunnel.State.UP && setting.trustedNetworkSSIDs.contains(

app/src/main/java/com/zaneschepke/wireguardautotunnel/service/foreground/WireGuardTunnelService.kt

@@ -1,9 +1,12 @@
 package com.zaneschepke.wireguardautotunnel.service.foreground
 
+import android.app.PendingIntent
+import android.content.Intent
 import android.os.Bundle
-import com.wireguard.android.backend.Tunnel
 import com.zaneschepke.wireguardautotunnel.R
+import com.zaneschepke.wireguardautotunnel.receiver.NotificationActionReceiver
 import com.zaneschepke.wireguardautotunnel.service.notification.NotificationService
+import com.zaneschepke.wireguardautotunnel.service.tunnel.HandshakeStatus
 import com.zaneschepke.wireguardautotunnel.service.tunnel.VpnService
 import com.zaneschepke.wireguardautotunnel.service.tunnel.model.TunnelConfig
 import dagger.hilt.android.AndroidEntryPoint
@@ -28,6 +31,8 @@ class WireGuardTunnelService : ForegroundService() {
 
     private lateinit var job : Job
 
+    private var tunnelName : String = ""
+
     override fun startService(extras : Bundle?) {
         super.startService(extras)
         val tunnelConfigString = extras?.getString(getString(R.string.tunnel_extras_key))
@@ -36,10 +41,8 @@ class WireGuardTunnelService : ForegroundService() {
             if(tunnelConfigString != null) {
                 try {
                     val tunnelConfig = TunnelConfig.from(tunnelConfigString)
-                    val state = vpnService.startTunnel(tunnelConfig)
-                    if (state == Tunnel.State.UP) {
-                        launchVpnConnectedNotification(tunnelConfig.name)
-                    }
+                    tunnelName = tunnelConfig.name
+                    vpnService.startTunnel(tunnelConfig)
                 } catch (e : Exception) {
                     Timber.e("Problem starting tunnel: ${e.message}")
                     stopService(extras)
@@ -48,6 +51,34 @@ class WireGuardTunnelService : ForegroundService() {
                 Timber.e("Tunnel config null")
             }
         }
+        CoroutineScope(job).launch {
+            var didShowConnected = false
+            var didShowFailedHandshakeNotification = false
+            vpnService.handshakeStatus.collect {
+                when(it) {
+                    HandshakeStatus.NOT_STARTED -> {
+                    }
+                    HandshakeStatus.NEVER_CONNECTED -> {
+                        if(!didShowFailedHandshakeNotification) {
+                            launchVpnConnectionFailedNotification(getString(R.string.initial_connection_failure_message))
+                            didShowFailedHandshakeNotification = true
+                        }
+                    }
+                    HandshakeStatus.HEALTHY -> {
+                        if(!didShowConnected) {
+                            launchVpnConnectedNotification()
+                            didShowConnected = true
+                        }
+                    }
+                    HandshakeStatus.UNHEALTHY -> {
+                        if(!didShowFailedHandshakeNotification) {
+                            launchVpnConnectionFailedNotification(getString(R.string.lost_connection_failure_message))
+                            didShowFailedHandshakeNotification = true
+                        }
+                    }
+                }
+            }
+        }
     }
 
     override fun stopService(extras : Bundle?) {
@@ -59,7 +90,7 @@ class WireGuardTunnelService : ForegroundService() {
         stopSelf()
     }
 
-    private fun launchVpnConnectedNotification(tunnelName : String) {
+    private fun launchVpnConnectedNotification() {
         val notification = notificationService.createNotification(
             channelId = getString(R.string.vpn_channel_id),
             channelName = getString(R.string.vpn_channel_name),
@@ -70,6 +101,22 @@ class WireGuardTunnelService : ForegroundService() {
         )
         super.startForeground(foregroundId, notification)
     }
+
+    private fun launchVpnConnectionFailedNotification(message : String) {
+        val notification = notificationService.createNotification(
+            channelId = getString(R.string.vpn_channel_id),
+            channelName = getString(R.string.vpn_channel_name),
+            action = PendingIntent.getBroadcast(this,0,Intent(this, NotificationActionReceiver::class.java),PendingIntent.FLAG_IMMUTABLE),
+            actionText = getString(R.string.restart),
+            title = getString(R.string.vpn_connection_failed),
+            onGoing = false,
+            showTimestamp = true,
+            description = message
+        )
+        super.startForeground(foregroundId, notification)
+    }
+
+
     private fun cancelJob() {
         if(this::job.isInitialized) {
             job.cancel()

app/src/main/java/com/zaneschepke/wireguardautotunnel/service/network/BaseNetworkService.kt

@@ -1,6 +1,5 @@
 package com.zaneschepke.wireguardautotunnel.service.network
 
-import android.app.Service
 import android.content.Context
 import android.net.ConnectivityManager
 import android.net.Network
@@ -10,12 +9,10 @@ import android.net.wifi.SupplicantState
 import android.net.wifi.WifiInfo
 import android.net.wifi.WifiManager
 import android.os.Build
-import dagger.hilt.android.qualifiers.ApplicationContext
 import kotlinx.coroutines.channels.awaitClose
 import kotlinx.coroutines.flow.Flow
 import kotlinx.coroutines.flow.callbackFlow
 import kotlinx.coroutines.flow.map
-import javax.inject.Inject
 
 
 abstract class BaseNetworkService<T : BaseNetworkService<T>>(val context: Context, networkCapability : Int) : NetworkService<T> {

app/src/main/java/com/zaneschepke/wireguardautotunnel/service/notification/NotificationService.kt

@@ -2,12 +2,15 @@ package com.zaneschepke.wireguardautotunnel.service.notification
 
 import android.app.Notification
 import android.app.NotificationManager
+import android.app.PendingIntent
 
 interface NotificationService {
     fun createNotification(
         channelId: String,
         channelName: String,
         title: String = "",
+        action: PendingIntent? = null,
+        actionText: String? = null,
         description: String,
         showTimestamp : Boolean = false,
         importance: Int = NotificationManager.IMPORTANCE_HIGH,

app/src/main/java/com/zaneschepke/wireguardautotunnel/service/notification/WireGuardNotification.kt

@@ -20,13 +20,15 @@ class WireGuardNotification @Inject constructor(@ApplicationContext private val
         channelId: String,
         channelName: String,
         title: String,
+        action: PendingIntent?,
+        actionText: String?,
         description: String,
         showTimestamp: Boolean,
         importance: Int,
         vibration: Boolean,
         onGoing: Boolean,
         lights: Boolean
-    ) : Notification {
+    ): Notification {
         val channel = NotificationChannel(
             channelId,
             channelName,
@@ -42,7 +44,12 @@ class WireGuardNotification @Inject constructor(@ApplicationContext private val
         notificationManager.createNotificationChannel(channel)
         val pendingIntent: PendingIntent =
             Intent(context, MainActivity::class.java).let { notificationIntent ->
-                PendingIntent.getActivity(context, 0, notificationIntent, PendingIntent.FLAG_IMMUTABLE)
+                PendingIntent.getActivity(
+                    context,
+                    0,
+                    notificationIntent,
+                    PendingIntent.FLAG_IMMUTABLE
+                )
             }
 
         val builder: Notification.Builder =
@@ -50,14 +57,21 @@ class WireGuardNotification @Inject constructor(@ApplicationContext private val
                 context,
                 channelId
             )
-
-        return builder
-            .setContentTitle(title)
-            .setContentText(description)
-            .setContentIntent(pendingIntent)
-            .setOngoing(onGoing)
-            .setShowWhen(showTimestamp)
-            .setSmallIcon(R.mipmap.ic_launcher_foreground)
-            .build()
+        return builder.let {
+            if(action != null && actionText != null) {
+                //TODO find a not deprecated way to do this
+                it.addAction(
+                    Notification.Action.Builder(0, actionText, action)
+                        .build())
+                    it.setAutoCancel(true)
+            }
+                it.setContentTitle(title)
+                .setContentText(description)
+                .setContentIntent(pendingIntent)
+                .setOngoing(onGoing)
+                .setShowWhen(showTimestamp)
+                .setSmallIcon(R.mipmap.ic_launcher_foreground)
+                .build()
+        }
     }
 }

app/src/main/java/com/zaneschepke/wireguardautotunnel/service/tunnel/HandshakeStatus.kt

@@ -0,0 +1,14 @@
+package com.zaneschepke.wireguardautotunnel.service.tunnel
+
+enum class HandshakeStatus {
+    HEALTHY,
+    UNHEALTHY,
+    NEVER_CONNECTED,
+    NOT_STARTED;
+
+    companion object {
+        private const val WG_TYPICAL_HANDSHAKE_INTERVAL_WHEN_HEALTHY_SEC = 120
+        const val UNHEALTHY_TIME_LIMIT_SEC = WG_TYPICAL_HANDSHAKE_INTERVAL_WHEN_HEALTHY_SEC + 60
+        const val NEVER_CONNECTED_TO_UNHEALTHY_TIME_LIMIT_SEC = 30
+    }
+}

app/src/main/java/com/zaneschepke/wireguardautotunnel/service/tunnel/VpnService.kt

@@ -1,6 +1,8 @@
 package com.zaneschepke.wireguardautotunnel.service.tunnel
 
+import com.wireguard.android.backend.Statistics
 import com.wireguard.android.backend.Tunnel
+import com.wireguard.crypto.Key
 import com.zaneschepke.wireguardautotunnel.service.tunnel.model.TunnelConfig
 import kotlinx.coroutines.flow.SharedFlow
 
@@ -9,5 +11,8 @@ interface VpnService : Tunnel {
     suspend fun stopTunnel()
     val state : SharedFlow<Tunnel.State>
     val tunnelName : SharedFlow<String>
+    val statistics : SharedFlow<Statistics>
+    val lastHandshake : SharedFlow<Map<Key,Long>>
+    val handshakeStatus : SharedFlow<HandshakeStatus>
     fun getState() : Tunnel.State
 }

app/src/main/java/com/zaneschepke/wireguardautotunnel/service/tunnel/WireGuardTunnel.kt

@@ -2,27 +2,51 @@ package com.zaneschepke.wireguardautotunnel.service.tunnel
 
 import com.wireguard.android.backend.Backend
 import com.wireguard.android.backend.BackendException
+import com.wireguard.android.backend.Statistics
 import com.wireguard.android.backend.Tunnel
+import com.wireguard.crypto.Key
 import com.zaneschepke.wireguardautotunnel.service.tunnel.model.TunnelConfig
+import com.zaneschepke.wireguardautotunnel.util.NumberUtils
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.Job
 import kotlinx.coroutines.channels.BufferOverflow
+import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.MutableSharedFlow
 import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.SharedFlow
 import kotlinx.coroutines.flow.asSharedFlow
 import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.launch
 import timber.log.Timber
 import javax.inject.Inject
 
 
-class WireGuardTunnel @Inject constructor(private val backend : Backend) : VpnService {
+class WireGuardTunnel @Inject constructor(private val backend : Backend,
+) : VpnService {
 
     private val _tunnelName = MutableStateFlow("")
     override val tunnelName get() = _tunnelName.asStateFlow()
+
     private val _state = MutableSharedFlow<Tunnel.State>(
-        replay = 1,
-        onBufferOverflow = BufferOverflow.SUSPEND,
-        extraBufferCapacity = 1)
+        replay = 1)
+
+    private val _handshakeStatus = MutableSharedFlow<HandshakeStatus>(replay = 1,
+        onBufferOverflow = BufferOverflow.DROP_OLDEST)
     override val state get() = _state.asSharedFlow()
 
+    private val _statistics = MutableSharedFlow<Statistics>(replay = 1)
+    override val statistics get() = _statistics.asSharedFlow()
+
+    private val _lastHandshake = MutableSharedFlow<Map<Key, Long>>(replay = 1)
+    override val lastHandshake get() = _lastHandshake.asSharedFlow()
+
+    override val handshakeStatus: SharedFlow<HandshakeStatus>
+        get() = _handshakeStatus.asSharedFlow()
+
+    private lateinit var statsJob : Job
+
+
     override suspend fun startTunnel(tunnelConfig: TunnelConfig) : Tunnel.State{
         return try {
             if(getState() == Tunnel.State.UP && _tunnelName.value != tunnelConfig.name) {
@@ -60,6 +84,46 @@ class WireGuardTunnel @Inject constructor(private val backend : Backend) : VpnSe
     }
 
     override fun onStateChange(state : Tunnel.State) {
+        val tunnel = this;
         _state.tryEmit(state)
+        if(state == Tunnel.State.UP) {
+            statsJob = CoroutineScope(Dispatchers.IO).launch {
+                val handshakeMap = HashMap<Key, Long>()
+                var neverHadHandshakeCounter = 0
+                while (true) {
+                    val statistics = backend.getStatistics(tunnel)
+                    _statistics.emit(statistics)
+                    statistics.peers().forEach {
+                        val handshakeEpoch = statistics.peer(it)?.latestHandshakeEpochMillis ?: 0L
+                        handshakeMap[it] = handshakeEpoch
+                        if(handshakeEpoch == 0L) {
+                            if(neverHadHandshakeCounter >= HandshakeStatus.NEVER_CONNECTED_TO_UNHEALTHY_TIME_LIMIT_SEC) {
+                                _handshakeStatus.emit(HandshakeStatus.NEVER_CONNECTED)
+                            } else {
+                                _handshakeStatus.emit(HandshakeStatus.NOT_STARTED)
+                            }
+                            if(neverHadHandshakeCounter <= HandshakeStatus.NEVER_CONNECTED_TO_UNHEALTHY_TIME_LIMIT_SEC) {
+                                neverHadHandshakeCounter++
+                            }
+                            return@forEach
+                        }
+                        if(NumberUtils.getSecondsBetweenTimestampAndNow(handshakeEpoch) >= HandshakeStatus.UNHEALTHY_TIME_LIMIT_SEC) {
+                            _handshakeStatus.emit(HandshakeStatus.UNHEALTHY)
+                        } else {
+                            _handshakeStatus.emit(HandshakeStatus.HEALTHY)
+                        }
+                    }
+                    _lastHandshake.emit(handshakeMap)
+                    delay(1000)
+                }
+            }
+        }
+        if(state == Tunnel.State.DOWN) {
+            if(this::statsJob.isInitialized) {
+                statsJob.cancel()
+            }
+            _handshakeStatus.tryEmit(HandshakeStatus.NOT_STARTED)
+            _lastHandshake.tryEmit(emptyMap())
+        }
     }
 }

app/src/main/java/com/zaneschepke/wireguardautotunnel/ui/MainActivity.kt

@@ -14,7 +14,6 @@ import androidx.compose.animation.ExperimentalAnimationApi
 import androidx.compose.animation.core.tween
 import androidx.compose.animation.fadeIn
 import androidx.compose.animation.slideInHorizontally
-import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.Scaffold
 import androidx.compose.material3.SnackbarHost
 import androidx.compose.material3.SnackbarHostState
@@ -34,6 +33,7 @@ import com.zaneschepke.wireguardautotunnel.R
 import com.zaneschepke.wireguardautotunnel.ui.common.PermissionRequestFailedScreen
 import com.zaneschepke.wireguardautotunnel.ui.common.navigation.BottomNavBar
 import com.zaneschepke.wireguardautotunnel.ui.screens.config.ConfigScreen
+import com.zaneschepke.wireguardautotunnel.ui.screens.detail.DetailScreen
 import com.zaneschepke.wireguardautotunnel.ui.screens.main.MainScreen
 import com.zaneschepke.wireguardautotunnel.ui.screens.settings.SettingsScreen
 import com.zaneschepke.wireguardautotunnel.ui.screens.support.SupportScreen
@@ -44,7 +44,7 @@ import dagger.hilt.android.AndroidEntryPoint
 @AndroidEntryPoint
 class MainActivity : AppCompatActivity() {
 
-    @OptIn(ExperimentalAnimationApi::class, ExperimentalMaterial3Api::class,
+    @OptIn(ExperimentalAnimationApi::class,
         ExperimentalPermissionsApi::class
     )
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -164,6 +164,9 @@ class MainActivity : AppCompatActivity() {
                         composable("${Routes.Config.name}/{id}", enterTransition = {
                             fadeIn(animationSpec = tween(1000))
                         }) { ConfigScreen(padding = padding, navController = navController, id = it.arguments?.getString("id"))}
+                        composable("${Routes.Detail.name}/{id}", enterTransition = {
+                            fadeIn(animationSpec = tween(1000))
+                        }) { DetailScreen(padding = padding, id = it.arguments?.getString("id")) }
                     }
                 }
             }

app/src/main/java/com/zaneschepke/wireguardautotunnel/ui/Routes.kt

@@ -10,7 +10,8 @@ enum class Routes {
     Main,
     Settings,
     Support,
-    Config;
+    Config,
+    Detail;
 
 
     companion object {

app/src/main/java/com/zaneschepke/wireguardautotunnel/ui/common/RowListItem.kt

@@ -7,20 +7,24 @@ import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.material3.Icon
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.vector.ImageVector
 import androidx.compose.ui.unit.dp
 
 @OptIn(ExperimentalFoundationApi::class)
 @Composable
-fun RowListItem(text : String, onHold : () -> Unit, rowButton : @Composable() () -> Unit ) {
+fun RowListItem(leadingIcon : ImageVector? = null, leadingIconColor : Color = Color.Gray, text : String, onHold : () -> Unit, onClick: () -> Unit, rowButton : @Composable() () -> Unit ) {
     Box(
         modifier = Modifier
             .combinedClickable(
                 onClick = {
-
+                    onClick()
                 },
                 onLongClick = {
                     onHold()
@@ -34,7 +38,17 @@ fun RowListItem(text : String, onHold : () -> Unit, rowButton : @Composable() ()
             verticalAlignment = Alignment.CenterVertically,
             horizontalArrangement = Arrangement.SpaceBetween
         ) {
-            Text(text)
+            Row(verticalAlignment = Alignment.CenterVertically,) {
+                if(leadingIcon != null) {
+                    Icon(
+                        leadingIcon, "status",
+                        tint = leadingIconColor,
+                        modifier =  Modifier.padding(end = 10.dp).size(15.dp)
+                    )
+                }
+                Text(text)
+            }
+
             rowButton()
         }
     }

app/src/main/java/com/zaneschepke/wireguardautotunnel/ui/screens/config/ConfigViewModel.kt

@@ -9,6 +9,7 @@ import androidx.compose.runtime.mutableStateListOf
 import androidx.compose.runtime.toMutableStateList
 import androidx.lifecycle.ViewModel
 import com.zaneschepke.wireguardautotunnel.repository.Repository
+import com.zaneschepke.wireguardautotunnel.service.tunnel.model.Settings
 import com.zaneschepke.wireguardautotunnel.service.tunnel.model.TunnelConfig
 import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.flow.MutableStateFlow
@@ -18,7 +19,8 @@ import javax.inject.Inject
 
 @HiltViewModel
 class ConfigViewModel @Inject constructor(private val application : Application,
-                                          private val tunnelRepo : Repository<TunnelConfig>) : ViewModel() {
+                                          private val tunnelRepo : Repository<TunnelConfig>,
+                                          private val settingsRepo : Repository<Settings>) : ViewModel() {
 
     private val _tunnel = MutableStateFlow<TunnelConfig?>(null)
     private val _tunnelName = MutableStateFlow("")
@@ -127,6 +129,17 @@ class ConfigViewModel @Inject constructor(private val application : Application,
                 wgQuick = wgQuick
             )?.let {
                 tunnelRepo.save(it)
+                val settings = settingsRepo.getAll()
+                if(settings != null) {
+                    val setting = settings[0]
+                    if(setting.defaultTunnel != null) {
+                        if(it.id == TunnelConfig.from(setting.defaultTunnel!!).id) {
+                            settingsRepo.save(setting.copy(
+                                defaultTunnel = it.toString()
+                            ))
+                        }
+                    }
+                }
             }
         }
     }

app/src/main/java/com/zaneschepke/wireguardautotunnel/ui/screens/detail/DetailScreen.kt

@@ -0,0 +1,134 @@
+package com.zaneschepke.wireguardautotunnel.ui.screens.detail
+
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.ClipboardManager
+import androidx.compose.ui.platform.LocalClipboardManager
+import androidx.compose.ui.res.stringResource
+import androidx.compose.ui.text.AnnotatedString
+import androidx.compose.ui.text.font.FontStyle
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.hilt.navigation.compose.hiltViewModel
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import com.zaneschepke.wireguardautotunnel.R
+import com.zaneschepke.wireguardautotunnel.util.NumberUtils
+import java.time.Duration
+import java.time.Instant
+
+@Composable
+fun DetailScreen(
+    viewModel: DetailViewModel = hiltViewModel(),
+    padding: PaddingValues,
+    id : String?
+) {
+
+    val clipboardManager: ClipboardManager = LocalClipboardManager.current
+    val tunnelStats by viewModel.tunnelStats.collectAsStateWithLifecycle(null)
+    val tunnel by viewModel.tunnel.collectAsStateWithLifecycle(null)
+    val tunnelName by viewModel.tunnelName.collectAsStateWithLifecycle()
+    val lastHandshake by viewModel.lastHandshake.collectAsStateWithLifecycle(emptyMap())
+
+    LaunchedEffect(Unit) {
+        viewModel.getTunnelById(id)
+    }
+
+    if(tunnel != null) {
+        val interfaceKey = tunnel?.`interface`?.keyPair?.publicKey?.toBase64().toString()
+        val addresses = tunnel?.`interface`?.addresses!!.joinToString()
+        val dnsServers = tunnel?.`interface`?.dnsServers!!.joinToString()
+        val mtu = tunnel?.`interface`?.mtu?.get().toString()
+        Column(
+            horizontalAlignment = Alignment.Start,
+            verticalArrangement = Arrangement.Top,
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(padding)
+        ) {
+            Row(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .padding(horizontal = 20.dp, vertical = 7.dp),
+                verticalAlignment = Alignment.CenterVertically,
+                horizontalArrangement = Arrangement.SpaceBetween
+            ) {
+                Column {
+                    Text(stringResource(R.string.config_interface), fontWeight = FontWeight.Bold, fontSize = 20.sp)
+                    Text(stringResource(R.string.name), fontStyle = FontStyle.Italic)
+                    Text(text = tunnelName,  modifier = Modifier.clickable {
+                        clipboardManager.setText(AnnotatedString(tunnelName))
+                    })
+                    Text(stringResource(R.string.public_key), fontStyle = FontStyle.Italic)
+                    Text(text = interfaceKey,  modifier = Modifier.clickable {
+                        clipboardManager.setText(AnnotatedString(interfaceKey))
+                    })
+                    Text(stringResource(R.string.addresses), fontStyle = FontStyle.Italic)
+                    Text(text = addresses,  modifier = Modifier.clickable {
+                        clipboardManager.setText(AnnotatedString(addresses))
+                    })
+                    Text(stringResource(R.string.dns_servers), fontStyle = FontStyle.Italic)
+                    Text(text = dnsServers,  modifier = Modifier.clickable {
+                        clipboardManager.setText(AnnotatedString(dnsServers))
+                    })
+                    Text(stringResource(R.string.mtu), fontStyle = FontStyle.Italic)
+                    Text(text = mtu,  modifier = Modifier.clickable {
+                        clipboardManager.setText(AnnotatedString(mtu))
+                    })
+                    Box(modifier = Modifier.padding(10.dp))
+                    tunnel?.peers?.forEach{
+                        val peerKey = it.publicKey.toBase64().toString()
+                        val allowedIps = it.allowedIps.joinToString()
+                        val endpoint = it.endpoint.get().toString()
+                        Text(stringResource(R.string.peer), fontWeight = FontWeight.Bold, fontSize = 20.sp)
+                        Text(stringResource(R.string.public_key), fontStyle = FontStyle.Italic)
+                        Text(text = peerKey,  modifier = Modifier.clickable {
+                            clipboardManager.setText(AnnotatedString(peerKey))
+                        })
+                        Text(stringResource(id = R.string.allowed_ips), fontStyle = FontStyle.Italic)
+                        Text(text = allowedIps,  modifier = Modifier.clickable {
+                            clipboardManager.setText(AnnotatedString(allowedIps))
+                        })
+                        Text(stringResource(R.string.endpoint), fontStyle = FontStyle.Italic)
+                        Text(text = endpoint,  modifier = Modifier.clickable {
+                            clipboardManager.setText(AnnotatedString(endpoint))
+                        })
+                        if (tunnelStats != null) {
+                            val totalRx = tunnelStats?.totalRx() ?: 0
+                            val totalTx = tunnelStats?.totalTx() ?: 0
+                            if((totalRx + totalTx != 0L))  {
+                                val rxKB = NumberUtils.bytesToKB(tunnelStats!!.totalRx())
+                                val txKB = NumberUtils.bytesToKB(tunnelStats!!.totalTx())
+                                Text(stringResource(R.string.transfer), fontStyle = FontStyle.Italic)
+                                Text("rx: ${NumberUtils.formatDecimalTwoPlaces(rxKB)} KB tx: ${NumberUtils.formatDecimalTwoPlaces(txKB)} KB")
+                                Text(stringResource(R.string.last_handshake), fontStyle = FontStyle.Italic)
+                                val handshakeEpoch = lastHandshake[it.publicKey]
+                                if(handshakeEpoch != null) {
+                                    if(handshakeEpoch == 0L) {
+                                        Text("Never")
+                                    } else {
+                                        val time = Instant.ofEpochMilli(handshakeEpoch)
+                                        Text("${Duration.between(time, Instant.now()).seconds} seconds ago")
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}

app/src/main/java/com/zaneschepke/wireguardautotunnel/ui/screens/detail/DetailViewModel.kt

@@ -0,0 +1,45 @@
+package com.zaneschepke.wireguardautotunnel.ui.screens.detail
+
+import androidx.lifecycle.ViewModel
+import com.wireguard.config.Config
+import com.zaneschepke.wireguardautotunnel.repository.Repository
+import com.zaneschepke.wireguardautotunnel.service.tunnel.VpnService
+import com.zaneschepke.wireguardautotunnel.service.tunnel.model.TunnelConfig
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import timber.log.Timber
+import javax.inject.Inject
+
+@HiltViewModel
+class DetailViewModel @Inject constructor(private val tunnelRepo : Repository<TunnelConfig>, private val vpnService : VpnService
+
+) : ViewModel() {
+
+    private val _tunnel = MutableStateFlow<Config?>(null)
+    val tunnel get() = _tunnel.asStateFlow()
+
+    private val _tunnelName = MutableStateFlow<String>("")
+    val tunnelName = _tunnelName.asStateFlow()
+    val tunnelStats get() = vpnService.statistics
+    val lastHandshake get() = vpnService.lastHandshake
+
+    private var config : TunnelConfig? = null
+
+    suspend fun getTunnelById(id : String?) : TunnelConfig? {
+        return try {
+            if(id != null) {
+               config = tunnelRepo.getById(id.toLong())
+                if (config != null) {
+                    _tunnel.emit(TunnelConfig.configFromQuick(config!!.wgQuick))
+                    _tunnelName.emit(config!!.name)
+                }
+                return config
+            }
+            return null
+        } catch (e : Exception) {
+            Timber.e(e.message)
+            null
+        }
+    }
+}

app/src/main/java/com/zaneschepke/wireguardautotunnel/ui/screens/main/MainScreen.kt

@@ -19,6 +19,7 @@ import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.FileOpen
 import androidx.compose.material.icons.filled.QrCode
 import androidx.compose.material.icons.rounded.Add
+import androidx.compose.material.icons.rounded.Circle
 import androidx.compose.material.icons.rounded.Delete
 import androidx.compose.material.icons.rounded.Edit
 import androidx.compose.material3.Divider
@@ -58,16 +59,22 @@ import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.navigation.NavController
 import com.wireguard.android.backend.Tunnel
 import com.zaneschepke.wireguardautotunnel.R
+import com.zaneschepke.wireguardautotunnel.service.tunnel.HandshakeStatus
 import com.zaneschepke.wireguardautotunnel.service.tunnel.model.TunnelConfig
 import com.zaneschepke.wireguardautotunnel.ui.Routes
 import com.zaneschepke.wireguardautotunnel.ui.common.RowListItem
+import com.zaneschepke.wireguardautotunnel.ui.theme.brickRed
+import com.zaneschepke.wireguardautotunnel.ui.theme.mint
+import com.zaneschepke.wireguardautotunnel.ui.theme.pinkRed
 import kotlinx.coroutines.launch
 
 @SuppressLint("UnusedMaterial3ScaffoldPaddingParameter")
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
-fun MainScreen(viewModel: MainViewModel = hiltViewModel(), padding : PaddingValues,
-               snackbarHostState : SnackbarHostState, navController: NavController) {
+fun MainScreen(
+    viewModel: MainViewModel = hiltViewModel(), padding: PaddingValues,
+    snackbarHostState: SnackbarHostState, navController: NavController
+) {
 
     val haptic = LocalHapticFeedback.current
     val context = LocalContext.current
@@ -76,12 +83,12 @@ fun MainScreen(viewModel: MainViewModel = hiltViewModel(), padding : PaddingValu
     val sheetState = rememberModalBottomSheetState()
     var showBottomSheet by remember { mutableStateOf(false) }
     val tunnels by viewModel.tunnels.collectAsStateWithLifecycle(mutableListOf())
+    val handshakeStatus by viewModel.handshakeStatus.collectAsStateWithLifecycle(HandshakeStatus.NOT_STARTED)
     val viewState = viewModel.viewState.collectAsStateWithLifecycle()
     var selectedTunnel by remember { mutableStateOf<TunnelConfig?>(null) }
     val state by viewModel.state.collectAsStateWithLifecycle(Tunnel.State.DOWN)
     val tunnelName by viewModel.tunnelName.collectAsStateWithLifecycle("")
 
-
     LaunchedEffect(viewState.value) {
         if (viewState.value.showSnackbarMessage) {
             val result = snackbarHostState.showSnackbar(
@@ -156,8 +163,15 @@ fun MainScreen(viewModel: MainViewModel = hiltViewModel(), padding : PaddingValu
                         }
                         .padding(10.dp)
                 ) {
-                    Icon(Icons.Filled.FileOpen, contentDescription = stringResource(id = R.string.open_file), modifier = Modifier.padding(10.dp))
-                    Text(stringResource(id = R.string.add_from_file), modifier = Modifier.padding(10.dp))
+                    Icon(
+                        Icons.Filled.FileOpen,
+                        contentDescription = stringResource(id = R.string.open_file),
+                        modifier = Modifier.padding(10.dp)
+                    )
+                    Text(
+                        stringResource(id = R.string.add_from_file),
+                        modifier = Modifier.padding(10.dp)
+                    )
                 }
                 Divider()
                 Row(modifier = Modifier
@@ -170,8 +184,15 @@ fun MainScreen(viewModel: MainViewModel = hiltViewModel(), padding : PaddingValu
                     }
                     .padding(10.dp)
                 ) {
-                    Icon(Icons.Filled.QrCode, contentDescription = stringResource(id = R.string.qr_scan), modifier = Modifier.padding(10.dp))
-                    Text(stringResource(id = R.string.add_from_qr), modifier = Modifier.padding(10.dp))
+                    Icon(
+                        Icons.Filled.QrCode,
+                        contentDescription = stringResource(id = R.string.qr_scan),
+                        modifier = Modifier.padding(10.dp)
+                    )
+                    Text(
+                        stringResource(id = R.string.add_from_qr),
+                        modifier = Modifier.padding(10.dp)
+                    )
                 }
             }
         }
@@ -185,36 +206,49 @@ fun MainScreen(viewModel: MainViewModel = hiltViewModel(), padding : PaddingValu
 
             LazyColumn(modifier = Modifier.fillMaxSize()) {
                 items(tunnels.toList()) { tunnel ->
-                    RowListItem(text = tunnel.name, onHold = {
-                        if (state == Tunnel.State.UP && tunnel.name == tunnelName) {
-                            scope.launch {
-                                viewModel.showSnackBarMessage(context.resources.getString(R.string.turn_off_tunnel))
+                    RowListItem(leadingIcon = Icons.Rounded.Circle,
+                        leadingIconColor = when (handshakeStatus) {
+                            HandshakeStatus.HEALTHY -> mint
+                            HandshakeStatus.UNHEALTHY -> brickRed
+                            HandshakeStatus.NOT_STARTED -> Color.Gray
+                            HandshakeStatus.NEVER_CONNECTED -> brickRed
+                        },
+                        text = tunnel.name,
+                        onHold = {
+                            if (state == Tunnel.State.UP && tunnel.name == tunnelName) {
+                                scope.launch {
+                                    viewModel.showSnackBarMessage(context.resources.getString(R.string.turn_off_tunnel))
+                                }
+                                return@RowListItem
                             }
-                            return@RowListItem
-                        }
-                        haptic.performHapticFeedback(HapticFeedbackType.LongPress)
-                        selectedTunnel = tunnel;
-                    }, rowButton = {
-                        if (tunnel.id == selectedTunnel?.id) {
-                            Row() {
-                                IconButton(onClick = {
-                                    navController.navigate("${Routes.Config.name}/${selectedTunnel?.id}")
-                                }) {
-                                    Icon(Icons.Rounded.Edit, stringResource(id = R.string.edit))
-                                }
-                                IconButton(onClick = { viewModel.onDelete(tunnel) }) {
-                                    Icon(Icons.Rounded.Delete, stringResource(id = R.string.delete))
+                            haptic.performHapticFeedback(HapticFeedbackType.LongPress)
+                            selectedTunnel = tunnel;
+                        },
+                        onClick = { navController.navigate("${Routes.Detail.name}/${tunnel.id}") },
+                        rowButton = {
+                            if (tunnel.id == selectedTunnel?.id) {
+                                Row() {
+                                    IconButton(onClick = {
+                                        navController.navigate("${Routes.Config.name}/${selectedTunnel?.id}")
+                                    }) {
+                                        Icon(Icons.Rounded.Edit, stringResource(id = R.string.edit))
+                                    }
+                                    IconButton(onClick = { viewModel.onDelete(tunnel) }) {
+                                        Icon(
+                                            Icons.Rounded.Delete,
+                                            stringResource(id = R.string.delete)
+                                        )
+                                    }
                                 }
+                            } else {
+                                Switch(
+                                    checked = (state == Tunnel.State.UP && tunnel.name == tunnelName),
+                                    onCheckedChange = { checked ->
+                                        if (checked) viewModel.onTunnelStart(tunnel) else viewModel.onTunnelStop()
+                                    }
+                                )
                             }
-                        } else {
-                            Switch(
-                                checked = (state == Tunnel.State.UP && tunnel.name == tunnelName),
-                                onCheckedChange = { checked ->
-                                    if (checked) viewModel.onTunnelStart(tunnel) else viewModel.onTunnelStop()
-                                }
-                            )
-                        }
-                    })
+                        })
                 }
             }
         }

app/src/main/java/com/zaneschepke/wireguardautotunnel/ui/screens/main/MainViewModel.kt

@@ -42,6 +42,8 @@ class MainViewModel @Inject constructor(private val application : Application,
     val viewState get() = _viewState.asStateFlow()
     val tunnels get() = tunnelRepo.itemFlow
     val state get() = vpnService.state
+
+    val handshakeStatus get() = vpnService.handshakeStatus
     val tunnelName get() = vpnService.tunnelName
     private val _settings = MutableStateFlow(Settings())
     val settings get() = _settings.asStateFlow()
@@ -102,33 +104,34 @@ class MainViewModel @Inject constructor(private val application : Application,
 
     suspend fun onTunnelQRSelected() {
         codeScanner.scan().collect {
-            Timber.d(it)
             if(!it.isNullOrEmpty() && it.contains(application.resources.getString(R.string.config_validation))) {
                 tunnelRepo.save(TunnelConfig(name = defaultConfigName(), wgQuick = it))
+            } else if(!it.isNullOrEmpty() && it.contains(application.resources.getString(R.string.barcode_downloading))) {
+                showSnackBarMessage(application.resources.getString(R.string.barcode_downloading_message))
             } else {
-                showSnackBarMessage("Invalid QR code. Try again.")
+                showSnackBarMessage(application.resources.getString(R.string.barcode_error))
             }
         }
     }
 
     fun onTunnelFileSelected(uri : Uri) {
-        val fileName = getFileName(application.applicationContext, uri)
-        val extension = getFileExtensionFromFileName(fileName)
-        if(extension != ".conf") {
-            viewModelScope.launch {
-                showSnackBarMessage(application.resources.getString(R.string.file_extension_message))
-            }
-            return
-        }
-        val stream = application.applicationContext.contentResolver.openInputStream(uri)
-        stream ?: return
-        val bufferReader = stream.bufferedReader(charset = Charsets.UTF_8)
         try {
-            val config = Config.parse(bufferReader)
-            val tunnelName = getNameFromFileName(fileName)
-            viewModelScope.launch {
-                tunnelRepo.save(TunnelConfig(name = tunnelName, wgQuick = config.toWgQuickString()))
+            val fileName = getFileName(application.applicationContext, uri)
+            val extension = getFileExtensionFromFileName(fileName)
+            if(extension != ".conf") {
+                viewModelScope.launch {
+                    showSnackBarMessage(application.resources.getString(R.string.file_extension_message))
+                }
+                return
             }
+            val stream = application.applicationContext.contentResolver.openInputStream(uri)
+            stream ?: return
+            val bufferReader = stream.bufferedReader(charset = Charsets.UTF_8)
+                val config = Config.parse(bufferReader)
+                val tunnelName = getNameFromFileName(fileName)
+                viewModelScope.launch {
+                    tunnelRepo.save(TunnelConfig(name = tunnelName, wgQuick = config.toWgQuickString()))
+                }
             stream.close()
         } catch(_: BadConfigException) {
             viewModelScope.launch {
@@ -177,6 +180,10 @@ class MainViewModel @Inject constructor(private val application : Application,
     }
 
     private fun getFileExtensionFromFileName(fileName : String) : String {
-        return fileName.substring(fileName.lastIndexOf('.'))
+        return try {
+            fileName.substring(fileName.lastIndexOf('.'))
+        } catch (e : Exception) {
+            ""
+        }
     }
 }

app/src/main/java/com/zaneschepke/wireguardautotunnel/ui/theme/Color.kt

@@ -9,4 +9,9 @@ val virdigris = Color(0xFF5BC0BE)
 
 val Purple40 = Color(0xFF6650a4)
 val PurpleGrey40 = Color(0xFF625b71)
-val Pink40 = Color(0xFFFFFFFF)
+val Pink40 = Color(0xFFFFFFFF)
+
+//status colors
+val brickRed = Color(0xFFCE4257)
+val pinkRed = Color(0xFFEF476F)
+val mint = Color(0xFF52B788)

app/src/main/java/com/zaneschepke/wireguardautotunnel/util/NumberUtils.kt

@@ -0,0 +1,25 @@
+package com.zaneschepke.wireguardautotunnel.util
+
+import java.math.BigDecimal
+import java.text.DecimalFormat
+import java.time.Duration
+import java.time.Instant
+
+object NumberUtils {
+
+    private const val BYTES_IN_KB = 1024L
+
+    fun bytesToKB(bytes : Long) : BigDecimal {
+        return bytes.toBigDecimal().divide(BYTES_IN_KB.toBigDecimal())
+    }
+
+    fun formatDecimalTwoPlaces(bigDecimal: BigDecimal) : String {
+        val df = DecimalFormat("#.##")
+        return df.format(bigDecimal)
+    }
+
+    fun getSecondsBetweenTimestampAndNow(epoch : Long) : Long {
+        val time = Instant.ofEpochMilli(epoch)
+        return Duration.between(time, Instant.now()).seconds
+    }
+}

app/src/main/res/values/strings.xml

@@ -58,4 +58,23 @@
     <string name="turn_on">Turn on</string>
     <string name="map">Map</string>
     <string name="bad_config">Bad config. Please try again.</string>
+    <string name="config_interface">Interface</string>
+    <string name="public_key">Public key</string>
+    <string name="barcode_downloading">Waiting for the Barcode UI module to be downloaded.</string>
+    <string name="barcode_downloading_message">Barcode module downloading. Try again.</string>
+    <string name="barcode_error">Invalid QR code. Try again.</string>
+    <string name="addresses">Addresses</string>
+    <string name="dns_servers">DNS servers</string>
+    <string name="mtu">MTU</string>
+    <string name="peer">Peer</string>
+    <string name="allowed_ips">Allowed IPs</string>
+    <string name="endpoint">Endpoint</string>
+    <string name="transfer">Transfer</string>
+    <string name="last_handshake">Last handshake</string>
+    <string name="name">Name</string>
+    <string name="restart">Restart Tunnel</string>
+    <string name="vpn_connection_failed">VPN Connection Failed</string>
+    <string name="failed_connection_to">Failed connection to -</string>
+    <string name="initial_connection_failure_message">Attempting to connect to server after 30 seconds of no response.</string>
+    <string name="lost_connection_failure_message">Attempting to reconnect to server after more than one minute of no response.</string>
 </resources>

build.gradle.kts

@@ -2,19 +2,19 @@
 
 buildscript {
     val objectBoxVersion by extra("3.5.1")
-    val hiltVersion by extra("2.44")
+    val hiltVersion by extra("2.47")
     val accompanistVersion by extra("0.31.2-alpha")
 
     dependencies {
         classpath("io.objectbox:objectbox-gradle-plugin:$objectBoxVersion")
         classpath("com.google.gms:google-services:4.3.15")
-        classpath("com.google.firebase:firebase-crashlytics-gradle:2.9.6")
+        classpath("com.google.firebase:firebase-crashlytics-gradle:2.9.7")
     }
 }
 
 plugins {
     id("com.android.application") version "8.2.0-alpha08" apply false
-    id("org.jetbrains.kotlin.android") version "1.8.21"  apply false
+    id("org.jetbrains.kotlin.android") version "1.8.22"  apply false
     id("com.google.dagger.hilt.android") version "2.44" apply false
-    kotlin("plugin.serialization") version "1.8.21" apply false
+    kotlin("plugin.serialization") version "1.8.22" apply false
 }