SmsHook/app/src/main/java/com/example/smshook/MessageHook.java

package com.example.smshook;

import android.app.Activity;
import android.content.Context;
import android.content.IntentFilter;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.Looper;
import android.util.Log;
import android.widget.Toast;

import androidx.core.content.ContextCompat;

import java.io.IOException;

import de.robv.android.xposed.XC_MethodHook;
import de.robv.android.xposed.XSharedPreferences;
import de.robv.android.xposed.XposedBridge;
import de.robv.android.xposed.XposedHelpers;
import de.robv.android.xposed.callbacks.XC_LoadPackage;

public class MessageHook {

    public void handleLoadPackage(XC_LoadPackage.LoadPackageParam lpparam) {
        try {
            Class<?> clazz = XposedHelpers.findClass("com.google.android.apps.messaging.home.HomeActivity", lpparam.classLoader);
            XposedHelpers.findAndHookMethod(clazz, "onCreate", Bundle.class, new XC_MethodHook() {
                @Override
                protected void beforeHookedMethod(MethodHookParam param) {
                    Activity activity = (Activity) param.thisObject;
                    Toast.makeText(activity, "message hooked", Toast.LENGTH_LONG).show();

                    XSharedPreferences pref = new XSharedPreferences("com.example.smshook", "sms_conf");
                    String sender = pref.getString("sender", "1");
                    String message = pref.getString("message", "1");

                    Class<?> receiverClazz = XposedHelpers.findClass("com.google.android.apps.messaging.shared.receiver.SmsDeliverReceiver", lpparam.classLoader);
//                    try {
//                        Object receiver = receiverClazz.newInstance();
//                        XposedHelpers.callMethod(receiver, "onReceive", activity.getApplicationContext(), SmsUtils.getSmsIntent(sender, message));
//                    } catch (Throwable e) {
//                        e.printStackTrace();
//                    }

                    try {
                        HttpServer server = HttpServer.getInstance(9898);
                        if (!server.wasStarted()) server.start();
                        server.setOnRequestListener((s, m) -> {
                            try {
                                Object receiver = receiverClazz.newInstance();
                                XposedHelpers.callMethod(receiver, "onReceive", activity.getApplicationContext(), SmsUtils.getSmsIntent(s, m));
                            } catch (Throwable e) {
                                e.printStackTrace();
                            }
                        });
                    } catch (Throwable e) {
                        e.printStackTrace();
                    }
                }
            });

        } catch (Throwable e) {
            e.printStackTrace();
        }
    }
}