/*******************************************************************************
 * Copyright(c) 2014 DongkeSoft All rights reserved. / Confidential
 * 类的信息：
 *      1.程序名称：LockLicenseHandle.cs
 *      2.功能描述：License文件管理。
 * 编辑履历：
 *      作者            日期                版本            修改内容
 *      张国印          2014/09/16          1.00            新建
 *******************************************************************************/

using System;
using System.Data;
using System.IO;
using System.Management;
using System.Runtime.Serialization.Formatters.Binary;
using System.Security.Cryptography;
using System.Text;
using Dongke.IBOSS.PRD.Basics.Library;

namespace Dongke.IBOSS.PRD.Service.DKIBOSSPRDLogic
{
    /// <summary>
    /// License文件管理
    /// </summary>
    public class LockLicenseHandle
    {
        //private const uint ELEP_SUCCESS = 0x80000000;                           // 成功
        //private const uint ELEP_NO_MORE_DEVICE = 0x80000009;                    // 没有符合条件的设备
        //private const uint ELEP_ERR_INVALID_PASSWORD = 0x80010002;              // 有锁，但PIN密码错
        //private const uint ELEP_INVALID_DEVICE_HANDLE = 0x80000004;             // 传入的设备句柄无效
        //private const uint ELEP_ERROR_HW_ERROR = 0x80010001;                    // 硬件错误，可能由硬件损坏引起。
        //private const uint ELEP_ERR_INVALID_STATE = 0x80010009;                 // 无效状态，升级失败将会将设备置为无 效状态，升级成功可以解除无效状态。
        //private const uint ELEP_ERR_NO_PRIVILEGE = 0x80010006;                  // 无开发商权限。
        //private const uint ELEP_NOT_USER_DEVICE = 0x80000026;                   //设备不是用户设备。
        //private const uint ELEP_INVALID_PARAMETER = 0x80000001;                 //参数错误，可能因为传入了空指针。
        //private const uint ELEP_ERR_OPT = 0x80010003;                           //用户信息区已经写过一次。
        //private const uint ELEP_ERR_INVALID_ADDR_OR_SIZE = 0x80010004;          //读写偏移量或长度错误。
        //private const ushort CUSTOMER_CODE_LENGTH = 100;                        // 写入锁内最长的客户编码字节数
        //private const ushort CUSTOMER_NAME_LENGTH = 600;                        // 写入锁内最长的客户名称字节数
        //private const ushort CUSTOMER_START_POINT = 1152;                       // 开始写锁区域
        //private const uint OLD_PIN_1 = 0x30303030;
        //private const uint OLD_PIN_2 = 0x30303030;
        //private const uint OLD_PIN_3 = 0x30303030;
        //private const uint OLD_PIN_4 = 0x30303030;

        private static string _uuid = null;
        /// <summary>
        /// 读取License文件内容
        /// </summary>
        /// <param name="lisenceFilePath">license文件路径</param>
        /// <param name="customer">读取的license内容</param>
        /// <returns>
        /// 0：读取成功
        /// -1：license文件不存在
        /// -2：license文件错误
        /// -3：license过期
        /// </returns>
        public static int ReadLisenceFile(string listCode, ref DataSet customer, out string licString)
        {
            licString = null;
            try
            {
                string sid = INIUtility.Instance(INIUtility.IniFile.Config).ReadIniData("DBSetting", "SID").ToUpper();
                string path = AppDomain.CurrentDomain.BaseDirectory + "LIC\\LIC_" + listCode + "_" + sid + ".lic";
                if (!File.Exists(path))
                {
                    return -1;
                }

                string[] lics = File.ReadAllLines(path, Encoding.UTF32);
                string l1 = Encryption.DecryptDES(lics[0], "DK#LIC#CODE#SID");
                string[] keys = l1.Split('#');

                if (listCode != keys[1] || sid != keys[2].ToUpper())
                {
                    return -2;
                }

                //licString = lics[1];
                string key = Encryption.DecryptDES(lics[1], "DK#CODE#" + keys[1].ToLower());
                string iv = Encryption.DecryptDES(lics[2], "DK#SID#" + keys[2].ToLower());
                string lic = Encryption.DecryptDES(lics[3], "DK#" + l1.ToUpper());

                MemoryStream memoryStream = new MemoryStream(Convert.FromBase64String(lic));
                memoryStream.Position = 0;
                BinaryFormatter formatter = new BinaryFormatter();

                Rijndael age = Rijndael.Create();
                CryptoStream cStream = new CryptoStream(memoryStream,
                        age.CreateDecryptor(Convert.FromBase64String(key), Convert.FromBase64String(iv)),
                        CryptoStreamMode.Read);
                DataSet data = (DataSet)formatter.Deserialize(cStream);

                if (listCode != data.Tables["Info"].Rows[0]["ListCode"]+"" ||
                    sid != data.Tables["Info"].Rows[0]["SID"].ToString().ToUpper())
                {
                    return -2;
                }

                if (data.Tables["UUID"].Rows.Count > 0)
                {
                    string uuid = Encryption.EncryptDES(UUID + "_" + sid, sid);
                    DataRow[] drs = data.Tables["UUID"].Select("UUID = '" + uuid + "'");
                    if (drs == null || drs.Length == 0)
                    {
                        return -2;
                    }
                }

                DateTime vBegin = Convert.ToDateTime(data.Tables["Info"].Rows[0]["ValidityBegin"]);
                DateTime vEnd = Convert.ToDateTime(data.Tables["Info"].Rows[0]["ValidityEnd"]);
                DateTime n = DateTime.Now.Date;
                if (n < vBegin || n > vEnd)
                {
                    return -3;
                }

                licString = Convert.ToDateTime(data.Tables["Info"].Rows[0]["LicCreateTime"]).Ticks.ToString();
                customer = data;
                return 0;
            }
            catch (Exception)
            {
                return -2;
            }
        }

        public static string UUID
        {
            get
            {
                if (_uuid != null)
                {
                    return _uuid;
                }
                try
                {
                    string code = null;
                    SelectQuery query = new SelectQuery("select * from Win32_ComputerSystemProduct");
                    using (ManagementObjectSearcher searcher = new ManagementObjectSearcher(query))
                    {
                        foreach (var item in searcher.Get())
                        {
                            using (item)
                            {
                                code = item["UUID"].ToString();
                            }
                        }
                    }
                    _uuid = code;
                }
                catch
                {
                    _uuid = "";
                }
                return _uuid;
            }
        }
    }
}