Minecraft Mods

Integrate abystrixLicense into your Forge or Fabric mod for Minecraft.

Forge (MultiLoader)

build.gradle

repositories {
    mavenCentral()
}

dependencies {
    implementation 'com.google.code.gson:gson:2.10.1'
}

License Check

package com.example.mymod;

import com.google.gson.JsonObject;
import com.google.gson.JsonParser;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class ModLicenseClient {

    private static final String API_URL = "https://your-server.com/api/v1/validate";
    private static final HttpClient client = HttpClient.newHttpClient();

    public static boolean checkLicense(String licenseKey, int productId, String hwid) {
        try {
            JsonObject body = new JsonObject();
            body.addProperty("licenseKey", licenseKey);
            body.addProperty("productId", productId);
            body.addProperty("hwid", hwid);

            HttpRequest request = HttpRequest.newBuilder()
                .uri(URI.create(API_URL))
                .header("Content-Type", "application/json")
                .POST(HttpRequest.BodyPublishers.ofString(body.toString()))
                .build();

            HttpResponse<String> response = client.send(request, HttpResponse.BodyHandlers.ofString());
            JsonObject json = JsonParser.parseString(response.body()).getAsJsonObject();
            return json.get("valid").getAsBoolean();
        } catch (Exception e) {
            return false;
        }
    }
}

Fabric

fabric.mod.json

Add the abystrixLicense dependency in your fabric mod metadata.

Mixin-based Validation

@Mixin(MinecraftServer.class)
public class LicenseMixin {

    private static boolean licenseValidated = false;

    @Inject(at = @At("HEAD"), method = "runServer")
    private void onServerStart(CallbackInfo info) {
        if (!licenseValidated) {
            String key = System.getProperty("abystrix.license.key");
            int productId = Integer.getInteger("abystrix.license.product", 1);
            String hwid = getHardwareId();

            if (!ModLicenseClient.checkLicense(key, productId, hwid)) {
                throw new RuntimeException("Invalid abystrixLicense license key!");
            }
            licenseValidated = true;
        }
    }

    private static String getHardwareId() {
        return System.getProperty("os.name") + "-" + System.getProperty("user.name");
    }
}