CTT/Server/Hotfix/Game/Helper/AccountHelper.cs

using MongoDB.Driver;
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;

namespace ET
{
    public static class AccountHelper
    {
        public static async ETTask<int> GetFirbiddenIpCount(string ip)
        {
            List<ForbiddenIP> list = await DBComponent.Instance.QueryFilter(Builders<ForbiddenIP>.Filter.Eq(t => t.Ip, ip));
            if (list == null || list.Count == 0)
            {
                return 0;
            }

            ForbiddenIP forbiddenIP = list[0];
            return forbiddenIP.count;
        }

        public static string GetPlayerFormatName(this long id)
        {
            return $"【{UserComponent.Instance.Get(id)?.NickName}({id})】";
        }
    }
    public sealed class SecurityUtil
    {
        public class SecurityData
        {
            public byte[] xorScale;
        }

        private static readonly byte[] xorScale;
        static SecurityUtil()
        {
            if (xorScale == null)
            {
                string path = Path.Combine(Environment.CurrentDirectory, "../Release/key");
                string str = File.ReadAllText(path);
                SecurityData data = MongoHelper.FromJson<SecurityData>(str);
                xorScale = data.xorScale;
            }
        }

        /// <summary>
        /// 对数组进行异或
        /// </summary>
        /// <param name="buffer"></param>
        /// <returns></returns>
        public static byte[] Xor(byte[] buffer)
        {
            //------------------
            //第3步：xor解密
            //------------------
            int iScaleLen = xorScale.Length;
            for (int i = 0; i < buffer.Length; i++)
            {
                buffer[i] = (byte)(buffer[i] ^ xorScale[i % iScaleLen]);
            }
            return buffer;
        }
    }
}