Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import android.content.Context;

import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.Signature;

import java.io.ByteArrayInputStream;

import java.security.cert.CertificateException;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;

import javax.security.auth.x500.X500Principal;

public class Main {
    private final static X500Principal DEBUG_DN = new X500Principal("CN=Android Debug,O=Android,C=US");

    /**
     * whether current app is debuggable
     */
    public static boolean isDebuggable(Context ctx) {
        boolean debuggable = false;
        try {
            PackageInfo packageInfo = ctx.getPackageManager().getPackageInfo(ctx.getPackageName(),
                    PackageManager.GET_SIGNATURES);
            Signature signatures[] = packageInfo.signatures;
            for (int i = 0; i < signatures.length; i++) {
                CertificateFactory certificateFactory = CertificateFactory.getInstance("X.509");
                ByteArrayInputStream stream = new ByteArrayInputStream(signatures[i].toByteArray());
                X509Certificate cert = (X509Certificate) certificateFactory.generateCertificate(stream);
                debuggable = cert.getSubjectX500Principal().equals(DEBUG_DN);
                if (debuggable) {
                    break;
                }
            }
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        } catch (CertificateException e) {
            e.printStackTrace();
        }
        return debuggable;
    }
}