hostsidetests/securitybulletin/test-apps/CVE-2021-0921/src/android/security/cts/CVE_2021_0921/Trigger.java

package android.security.cts.CVE_2021_0921;

import android.content.ActivityNotFoundException;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.util.Log;

import java.io.File;

public class Trigger {
    private static final String TAG = "TAG_2021_0921.Trigger";
    private Context mContext;

    public Trigger(Context context) {
        mContext = context;
    }

    private static boolean isCar(Context context) {
      PackageManager pm = context.getPackageManager();
      return pm.hasSystemFeature(PackageManager.FEATURE_AUTOMOTIVE);
    }

    private static boolean isWear(Context context) {
      PackageManager pm = context.getPackageManager();
      return pm.hasSystemFeature(PackageManager.FEATURE_WATCH);
    }

    private static boolean isTv(Context context) {
      PackageManager pm = context.getPackageManager();
      return pm.hasSystemFeature(PackageManager.FEATURE_TELEVISION);
    }

    public void accountSettings() {
        Log.d(TAG, "accountSettings() start");
        String exitMessage = "accountSettings() end";

        //replaces intent.setAction(Intent.ACTION_REBOOT) in original Poc
        Intent arbitraryIntent = new Intent(mContext, TestActivity.class);

        //Patched device is not supposed to process that intent
        Authenticator.mIntent = arbitraryIntent;

        Intent intent = new Intent();
        String pkg = "com.android.settings";
        if (isCar(mContext)) {
            pkg = "com.android.car.settings";
            intent.setComponent(new ComponentName(pkg, pkg + ".accounts.AddAccountActivity"));
        } else if (isTv(mContext)) {
            pkg = "com.android.tv.settings";
            intent.setComponent(new ComponentName(pkg, pkg + ".accounts.AddAccountWithTypeActivity"));
        } else if (isWear(mContext)) {
            pkg = "com.google.android.clockwork.home";
            intent.setComponent(new ComponentName(pkg, pkg + ".accounts.SetupAccountReceiver"));
        } else {
            intent.setComponent(new ComponentName(pkg, pkg + ".accounts.AddAccountSettings"));
        }
        intent.setAction(Intent.ACTION_RUN);
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        String authTypes[] = {"android.security.cts"};

        intent.putExtra("account_types", authTypes);

        try {
            mContext.startActivity(intent);
        } catch (ActivityNotFoundException e) {
            // activity does not exist on this device
            exitMessage = "accountSettings() failure: activity does not exist on this device";
        }
        Log.d(TAG, exitMessage);
    }
}