feature/app-split-tunneling (#702)

App Split Tunneling for Windows and Android

client/android/src/org/amnezia/vpn/AmneziaActivity.kt

@@ -7,6 +7,7 @@ import android.content.Intent.EXTRA_MIME_TYPES
 import android.content.Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY
 import android.content.ServiceConnection
 import android.content.pm.PackageManager
+import android.graphics.Bitmap
 import android.net.Uri
 import android.net.VpnService
 import android.os.Bundle
@@ -24,12 +25,15 @@ import androidx.core.content.ContextCompat
 import java.io.IOException
 import kotlin.LazyThreadSafetyMode.NONE
 import kotlin.text.RegexOption.IGNORE_CASE
+import AppListProvider
 import kotlinx.coroutines.CompletableDeferred
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.SupervisorJob
 import kotlinx.coroutines.cancel
 import kotlinx.coroutines.launch
+import kotlinx.coroutines.runBlocking
+import kotlinx.coroutines.withContext
 import org.amnezia.vpn.protocol.getStatistics
 import org.amnezia.vpn.protocol.getStatus
 import org.amnezia.vpn.qt.QtAndroidController
@@ -484,4 +488,24 @@ class AmneziaActivity : QtActivity() {
             moveTaskToBack(false)
         }
     }
+
+    @Suppress("unused")
+    fun getAppList(): String {
+        Log.v(TAG, "Get app list")
+        var appList = ""
+        runBlocking {
+            mainScope.launch {
+                withContext(Dispatchers.IO) {
+                    appList = AppListProvider.getAppList(packageManager, packageName)
+                }
+            }.join()
+        }
+        return appList
+    }
+
+    @Suppress("unused")
+    fun getAppIcon(packageName: String, width: Int, height: Int): Bitmap {
+        Log.v(TAG, "Get app icon: $packageName")
+        return AppListProvider.getAppIcon(packageManager, packageName, width, height)
+    }
 }

client/android/src/org/amnezia/vpn/AppListProvider.kt

@@ -0,0 +1,73 @@
+import android.Manifest.permission.INTERNET
+import android.content.pm.ApplicationInfo
+import android.content.pm.PackageInfo
+import android.content.pm.PackageManager
+import android.content.pm.PackageManager.NameNotFoundException
+import android.graphics.Bitmap
+import android.graphics.Bitmap.Config.ARGB_8888
+import androidx.core.graphics.drawable.toBitmapOrNull
+import org.amnezia.vpn.util.Log
+import org.json.JSONArray
+import org.json.JSONObject
+
+private const val TAG = "AppListProvider"
+
+object AppListProvider {
+    fun getAppList(pm: PackageManager, selfPackageName: String): String {
+        val jsonArray = JSONArray()
+        pm.getPackagesHoldingPermissions(arrayOf(INTERNET), 0)
+            .filter { it.packageName != selfPackageName }
+            .map { App(it, pm) }
+            .sortedWith(App::compareTo)
+            .map(App::toJson)
+            .forEach(jsonArray::put)
+        return jsonArray.toString()
+    }
+
+    fun getAppIcon(pm: PackageManager, packageName: String, width: Int, height: Int): Bitmap {
+        val icon = try {
+            pm.getApplicationIcon(packageName)
+        } catch (e: NameNotFoundException) {
+            Log.e(TAG, "Package $packageName was not found: $e")
+            pm.defaultActivityIcon
+        }
+        val w: Int = if (width > 0) width else icon.intrinsicWidth
+        val h: Int = if (height > 0) height else icon.intrinsicHeight
+        return icon.toBitmapOrNull(w, h, ARGB_8888)
+            ?: Bitmap.createBitmap(w, h, ARGB_8888)
+    }
+}
+
+private class App(pi: PackageInfo, pm: PackageManager, ai: ApplicationInfo = pi.applicationInfo) : Comparable<App> {
+    val name: String?
+    val packageName: String = pi.packageName
+    val icon: Boolean = ai.icon != 0
+    val isLaunchable: Boolean = pm.getLaunchIntentForPackage(packageName) != null
+
+    init {
+        val name = ai.loadLabel(pm).toString()
+        this.name = if (name != packageName) name else null
+    }
+
+    override fun compareTo(other: App): Int {
+        val r = other.isLaunchable.compareTo(isLaunchable)
+        if (r != 0) return r
+        if (name != other.name) {
+            return when {
+                name == null -> 1
+                other.name == null -> -1
+                else -> String.CASE_INSENSITIVE_ORDER.compare(name, other.name)
+            }
+        }
+        return String.CASE_INSENSITIVE_ORDER.compare(packageName, other.packageName)
+    }
+
+    fun toJson(): JSONObject {
+        val jsonObject = JSONObject()
+        jsonObject.put("package", packageName)
+        jsonObject.put("name", name)
+        jsonObject.put("icon", icon)
+        jsonObject.put("launchable", isLaunchable)
+        return jsonObject
+    }
+}