GameCenterAuth

Unity Native implementation for Game Center server-side validation. Make possible to ensure the user's gamecenter ID is valid. Static library is already compiled (libGameCenterAuth.a), but you may want to recompile them from Xcode folder.

How To Use

1. Copy Unity/* files (including *.meta) in your unity project
2. Authentificate using unity's standard method Social.localUser.Authenticate from package UnityEngine.SocialPlatforms.GameCenter.
3. Call GameCenterSignature.Generate with OnSucceeded and OnFailed callbacks.
4. In case of success, pass arguments from OnSucceeded to your server and validate it server-side
5. Make sure the callbacks are static and have the [MonoPInvokeCallback(typeof(GameCenterSignature.OnSucceeded))] and [MonoPInvokeCallback(typeof(GameCenterSignature.OnFailed))] attributes.

How To Recompile

xcodebuild -project Xcode/GameCenterAuth.xcodeproj -alltargets ARCHS='arm64 armv7 armv7s' IPHONEOS_DEPLOYMENT_TARGET='8.0'

Usage Example

using UnityEngine;
using UnityEngine.SocialPlatforms.GameCenter;
using AOT;

namespace Online
{
    #if (UNITY_IOS)
    public class AuthorizeGameCenter : MonoBehaviour
    {
        [MonoPInvokeCallback(typeof(GameCenterSignature.OnSucceeded))]
        private static void OnSucceeded(
            string PublicKeyUrl, 
            ulong timestamp,
            string signature,
            string salt,
            string playerID,
            string alias,
            string bundleID)
        {
            Debug.Log("Succeeded authorization to gamecenter: \n" +
                "PublicKeyUrl=" + PublicKeyUrl + "\n" +
                "timestamp=" + timestamp + "\n" +
                "signature=" + signature + "\n" + 
                "salt=" + salt + "\n" +
                "playerID=" + playerID + "\n" +
                "alias=" + alias + "\n" +
                "bundleID=" + bundleID);
        }

        [MonoPInvokeCallback(typeof(GameCenterSignature.OnFailed))]
        private static void OnFailed(string reason)
        {
            Debug.Log("Failed to authenticate with gamecenter:" + reason);
        }

        private void OnLocalAuthenticateResult(bool success)
        {
            if (success)
            {
                Debug.Log("LocalAuthenticate success!");

                GameCenterSignature.Generate(OnSucceeded, OnFailed);
            }
            else
            {
                Debug.Log("LocalAuthentificate failed.");
            }
        }

        public void Process()
        {
            if (Social.localUser.authenticated)
            {
                GameCenterSignature.Generate(OnSucceeded, OnFailed);
            }
            else
            {
                Social.localUser.Authenticate(OnLocalAuthenticateResult);
            }
        }
    }
    #endif
}