From 1b7660a77ae780606ec8b2e0f9c8ac7a3aad9b9d Mon Sep 17 00:00:00 2001
From: SayantanRC <sayantan.rc@e.email>
Date: Mon, 4 Apr 2022 20:49:40 +0530
Subject: [PATCH] App lounge: (issue_2237) Set installer to FakeStore
 "com.android.vending" if origin is GPLAY

---
 .../e/apps/manager/pkg/PkgManagerBR.kt        |  4 +++
 .../e/apps/manager/pkg/PkgManagerModule.kt    | 32 ++++++++++++++++++-
 2 files changed, 35 insertions(+), 1 deletion(-)

diff --git a/app/src/main/java/foundation/e/apps/manager/pkg/PkgManagerBR.kt b/app/src/main/java/foundation/e/apps/manager/pkg/PkgManagerBR.kt
index ec4bb4b0f..d80a32afe 100644
--- a/app/src/main/java/foundation/e/apps/manager/pkg/PkgManagerBR.kt
+++ b/app/src/main/java/foundation/e/apps/manager/pkg/PkgManagerBR.kt
@@ -42,6 +42,9 @@ open class PkgManagerBR : BroadcastReceiver() {
     @Inject
     lateinit var fusedManagerRepository: FusedManagerRepository
 
+    @Inject
+    lateinit var pkgManagerModule: PkgManagerModule
+
     override fun onReceive(context: Context?, intent: Intent?) {
         val action = intent?.action
         if (context != null && action != null) {
@@ -86,6 +89,7 @@ open class PkgManagerBR : BroadcastReceiver() {
         }
         GlobalScope.launch {
             val fusedDownload = fusedManagerRepository.getFusedDownload(packageName = pkgName)
+            pkgManagerModule.setFakeStoreAsInstallerIfNeeded(fusedDownload)
             fusedManagerRepository.updateDownloadStatus(fusedDownload, Status.INSTALLED)
         }
     }
diff --git a/app/src/main/java/foundation/e/apps/manager/pkg/PkgManagerModule.kt b/app/src/main/java/foundation/e/apps/manager/pkg/PkgManagerModule.kt
index e88620d3d..24f60bc12 100644
--- a/app/src/main/java/foundation/e/apps/manager/pkg/PkgManagerModule.kt
+++ b/app/src/main/java/foundation/e/apps/manager/pkg/PkgManagerModule.kt
@@ -30,7 +30,10 @@ import android.os.Build
 import android.util.Log
 import androidx.core.content.pm.PackageInfoCompat
 import dagger.hilt.android.qualifiers.ApplicationContext
+import foundation.e.apps.manager.database.fusedDownload.FusedDownload
+import foundation.e.apps.utils.enums.Origin
 import foundation.e.apps.utils.enums.Status
+import foundation.e.apps.utils.enums.Type
 import kotlinx.coroutines.DelicateCoroutinesApi
 import java.io.File
 import javax.inject.Inject
@@ -87,9 +90,36 @@ class PkgManagerModule @Inject constructor(
         }
     }
 
+    /**
+     * Sets an installed app's installer as FakeStore if its source / origin is from Google play.
+     * If the origin is not Google play, no operation is performed.
+     *
+     * [See issue 2237](https://gitlab.e.foundation/e/backlog/-/issues/2237)
+     *
+     * Surrounded by try-catch to prevent exception is case App Lounge and FakeStore's
+     * signing certificate is not the same.
+     */
+    fun setFakeStoreAsInstallerIfNeeded(fusedDownload: FusedDownload?) {
+        if (fusedDownload == null || fusedDownload.package_name.isBlank()) {
+            return
+        }
+        if (fusedDownload.origin == Origin.GPLAY) {
+            val fakeStorePackageName = "com.android.vending"
+            if (fusedDownload.type == Type.NATIVE && isInstalled(fakeStorePackageName)) {
+                val targetPackage = fusedDownload.package_name
+                try {
+                    packageManager.setInstallerPackageName(targetPackage, fakeStorePackageName)
+                    Log.d(TAG, "Changed installer to $fakeStorePackageName for $targetPackage")
+                } catch (e: Exception) {
+                    e.printStackTrace()
+                }
+            }
+        }
+    }
+
     /**
      * Installs the given package using system API
-     * @param file An instance of [File]
+     * @param list List of [File] to be written to install session.
      */
     @OptIn(DelicateCoroutinesApi::class)
     fun installApplication(list: List<File>, packageName: String) {
-- 
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