From 2c0ec28803d405dc211a5a13beeef3aa6f8ebeb3 Mon Sep 17 00:00:00 2001
From: FineFindus <63370021+FineFindus@users.noreply.github.com>
Date: Sat, 20 May 2023 13:20:25 +0200
Subject: [PATCH] Panic responder (#512)

* feat: add panic responder

* refactor: logOut before removing session

* fix(panic): close app after logOut to avoid crash

* build: reset gradle.properties
---
 mastodon/src/main/AndroidManifest.xml         | 16 ++++++
 .../joinmastodon/android/ExitActivity.java    | 24 +++++++++
 .../android/PanicResponderActivity.java       | 49 +++++++++++++++++++
 3 files changed, 89 insertions(+)
 create mode 100644 mastodon/src/main/java/org/joinmastodon/android/ExitActivity.java
 create mode 100644 mastodon/src/main/java/org/joinmastodon/android/PanicResponderActivity.java

diff --git a/mastodon/src/main/AndroidManifest.xml b/mastodon/src/main/AndroidManifest.xml
index c5ffb97e4..69e170179 100644
--- a/mastodon/src/main/AndroidManifest.xml
+++ b/mastodon/src/main/AndroidManifest.xml
@@ -38,6 +38,22 @@
 				<category android:name="android.intent.category.LAUNCHER"/>
 			</intent-filter>
 		</activity>
+		<activity
+			android:name=".PanicResponderActivity"
+			android:exported="true"
+			android:launchMode="singleInstance"
+			android:noHistory="true"
+			android:theme="@android:style/Theme.NoDisplay">
+			<intent-filter>
+				<action android:name="info.guardianproject.panic.action.TRIGGER" />
+
+				<category android:name="android.intent.category.DEFAULT" />
+			</intent-filter>
+		</activity>
+		<activity
+			android:name=".ExitActivity"
+			android:exported="false"
+			android:theme="@android:style/Theme.NoDisplay" />
 		<activity android:name=".OAuthActivity" android:exported="true" android:configChanges="orientation|screenSize" android:launchMode="singleTask">
 			<intent-filter>
 				<action android:name="android.intent.action.VIEW"/>
diff --git a/mastodon/src/main/java/org/joinmastodon/android/ExitActivity.java b/mastodon/src/main/java/org/joinmastodon/android/ExitActivity.java
new file mode 100644
index 000000000..54a5ccbc4
--- /dev/null
+++ b/mastodon/src/main/java/org/joinmastodon/android/ExitActivity.java
@@ -0,0 +1,24 @@
+package org.joinmastodon.android;
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+
+public class ExitActivity extends Activity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        finishAndRemoveTask();
+    }
+
+    public static void exit(Context context) {
+        Intent intent = new Intent(context, ExitActivity.class);
+        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
+        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
+        context.startActivity(intent);
+    }
+
+}
diff --git a/mastodon/src/main/java/org/joinmastodon/android/PanicResponderActivity.java b/mastodon/src/main/java/org/joinmastodon/android/PanicResponderActivity.java
new file mode 100644
index 000000000..716907a67
--- /dev/null
+++ b/mastodon/src/main/java/org/joinmastodon/android/PanicResponderActivity.java
@@ -0,0 +1,49 @@
+package org.joinmastodon.android;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.os.Bundle;
+
+import org.joinmastodon.android.api.requests.oauth.RevokeOauthToken;
+import org.joinmastodon.android.api.session.AccountSession;
+import org.joinmastodon.android.api.session.AccountSessionManager;
+
+import me.grishka.appkit.api.Callback;
+import me.grishka.appkit.api.ErrorResponse;
+
+
+public class PanicResponderActivity extends Activity {
+    public static final String PANIC_TRIGGER_ACTION = "info.guardianproject.panic.action.TRIGGER";
+
+    @Override
+    protected void onCreate(final Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        final Intent intent = getIntent();
+        if (intent != null && PANIC_TRIGGER_ACTION.equals(intent.getAction())) {
+            AccountSessionManager.getInstance().getLoggedInAccounts().forEach(accountSession -> logOut(accountSession.getID()));
+            ExitActivity.exit(this);
+        }
+        finishAndRemoveTask();
+    }
+
+    private void logOut(String accountID){
+        AccountSession session=AccountSessionManager.getInstance().getAccount(accountID);
+        new RevokeOauthToken(session.app.clientId, session.app.clientSecret, session.token.accessToken)
+                .setCallback(new Callback<>(){
+                    @Override
+                    public void onSuccess(Object result){
+                        onLoggedOut(accountID);
+                    }
+
+                    @Override
+                    public void onError(ErrorResponse error){
+                        onLoggedOut(accountID);
+                    }
+                })
+                .exec(accountID);
+    }
+
+    private void onLoggedOut(String accountID){
+        AccountSessionManager.getInstance().removeAccount(accountID);
+    }
+}
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