License-Key

A simple plugin license key checker

Installation

Initialize the header("Content-type: application/json; charset=utf-8"); in top your index to return a JSON format

Put data/license.class.php in your files and start de class

Settings

Open the config.php and insert the data to connect in database

define("mysql", array('host'=>'YOUR_HOST','user'=>'YOUR_USER', 'pass'=>'YOUR_PASS', 'db'=>'YOUR_DATABASE'));

$license = new License();

Call the function to check has a license by IP and PORT (need check isset IP and PORT)

if (!$license->hasLicense($_GET['ip'], $_GET['port'])) {
  die('{"error":"IP/Port no has a license!"}');
}

Examples

Connect a URL http://yourwebsite.com/?ip=127.0.0.1&port=25565

Java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;

import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;

try {
  String link = "http://yourwebsite.com/?ip=127.0.0.1&port=25565";
  URL url = new URL(link);
  URLConnection conn = url.openConnection(); //Open connection with the URL
  BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
  JSONParser parse = new JSONParser(); //Instance parse information
  JSONObject json = (JSONObject) parse.parse(br); //parse
  br.close(); //close connection
  boolean error = json.get("error") != null; //check has a error
  if (error) {
    System.out.println("A error has found! " + json.get("error"));
    return;
  }
  String server = (String) json.get("server"); //parse the object Server to String
  System.out.println("Welcome server " + server);
  } catch (IOException | ParseException e) {
    System.out.println(e.getMessage());
}

Has a value in database, return format:

{
  "server": "Test",
  "plugin": "KwLicense"
}

Others function

Call the Server by

getServer()

Call the Plugin Name by

getPlugin()