From 215e6b3c81aeb6634cb3c439f71dd96e1364d009 Mon Sep 17 00:00:00 2001
From: M66B <marcel@faircode.eu>
Date: Tue, 3 Nov 2015 17:42:49 +0100
Subject: [PATCH] Remove settings on uninstalling application

---
 app/src/main/AndroidManifest.xml              |  4 ++++
 .../java/eu/faircode/netguard/Receiver.java   | 20 ++++++++++++++++---
 2 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index ffdcd320..e7d5434d 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -37,6 +37,10 @@
                 <action android:name="android.intent.action.BOOT_COMPLETED" />
                 <action android:name="android.intent.action.MY_PACKAGE_REPLACED" />
             </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.PACKAGE_REMOVED" />
+                <data android:scheme="package" />
+            </intent-filter>
         </receiver>
     </application>
 </manifest>
diff --git a/app/src/main/java/eu/faircode/netguard/Receiver.java b/app/src/main/java/eu/faircode/netguard/Receiver.java
index fb885f67..7bef9de9 100644
--- a/app/src/main/java/eu/faircode/netguard/Receiver.java
+++ b/app/src/main/java/eu/faircode/netguard/Receiver.java
@@ -3,6 +3,7 @@ package eu.faircode.netguard;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
+import android.content.SharedPreferences;
 import android.net.VpnService;
 import android.util.Log;
 
@@ -14,8 +15,21 @@ public class Receiver extends BroadcastReceiver {
         Log.i(TAG, "Received " + intent);
         Util.logExtras(TAG, intent);
 
-        // Start service
-        if (VpnService.prepare(context) == null)
-            SinkholeService.start(context);
+        if (Intent.ACTION_PACKAGE_REMOVED.equals(intent.getAction())) {
+            // Remove settings
+            if (intent.getBooleanExtra(Intent.EXTRA_DATA_REMOVED, false)) {
+                String packageName = intent.getData().getSchemeSpecificPart();
+                Log.i(TAG, "Deleting settings package=" + packageName);
+                context.getSharedPreferences("wifi", Context.MODE_PRIVATE).edit().remove(packageName).apply();
+                context.getSharedPreferences("other", Context.MODE_PRIVATE).edit().remove(packageName).apply();
+                context.getSharedPreferences("unused", Context.MODE_PRIVATE).edit().remove(packageName).apply();
+                context.getSharedPreferences("roaming", Context.MODE_PRIVATE).edit().remove(packageName).apply();
+            }
+
+        } else {
+            // Start service
+            if (VpnService.prepare(context) == null)
+                SinkholeService.start(context);
+        }
     }
 }
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