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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using BatCharging.Model;
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namespace BatCharging.Service
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{
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/// <summary>
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/// 设备鉴权和操作指令消息封装类-3.3
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/// </summary>
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public class MsgSignCmdEncoder
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{
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/// <summary>
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/// 获取鉴权消息包字节列表
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/// </summary>
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/// <returns></returns>
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public byte[] GetMsgPackSignIn(byte[] destAddr,out Auth auth)
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{
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byte[] result = null;
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APCI headAPCI = new APCI();
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headAPCI.StartChar = CmnChargerConst.APCI_START_CHAR;
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headAPCI.PackLen = 0; //临时赋值为零,具体数值看下面的计算结果
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headAPCI.CtlArea = 0; //控制域
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headAPCI.DestAddr = destAddr;//目的地址
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headAPCI.SrcAddr = 0;//源地址，本系统中，源地址统一为：00000000（即为0）
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byte randomNum = CmnChargerParam.GetByteRandomNum();
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ASDU headASDU = new ASDU();
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headASDU.FrameTypeNo = 45; //帧类型号
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headASDU.MsgBodyCount = 1; //信息体个数
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headASDU.TransReason = 3; //传送原因
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headASDU.PublicAddr = 0; //公共地址
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headASDU.MsgBodyAddr = new byte[] { 0, 0, 0 }; //信息体地址
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auth = new Auth();
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auth.RecordType = 24; //记录类型
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auth.ClientType = 1; //客户端类型。1站控 2本地控制器 3测试客户端 4TCU模式 0未知设备
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auth.ConnSeq = CmnChargerParam.GetUInt16SeqNum(); //连接序号
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auth.AuthCodes = GetAuthCodesResult(CmnChargerConst.AUTH_CODE, randomNum); //鉴权码
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auth.AuthCodeKey = randomNum; //鉴码KEY[随机数]
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headASDU.MsgBodyContents = GetMsgContents(auth); //信息体
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headAPCI.PackLen = Convert.ToUInt16(24 + headASDU.MsgBodyContents.Length); //报文长度
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List<byte> lstResult = MsgHeadApciEncoder.BuildBaseAPCI(headAPCI);
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lstResult.AddRange(MsgHeadAsduEncoder.BuildBaseASDU(headASDU).ToArray());
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result = lstResult.ToArray();
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return result;
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}
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/// <summary>
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/// 获取到异或后的鉴权字节数组
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/// </summary>
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/// <param name="strAuthCodes">鉴权字符串</param>
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/// <returns>异或后的鉴权字节数组</returns>
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private byte[] GetAuthCodesResult(string strAuthCodes,byte key)
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{
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byte[] results = new byte[8];
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if (!String.IsNullOrEmpty(strAuthCodes))
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{
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byte[] authCodes = Encoding.ASCII.GetBytes(strAuthCodes);
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results[0] = Convert.ToByte(authCodes[0] ^ key);
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results[1] = Convert.ToByte(authCodes[1] ^ key);
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results[2] = Convert.ToByte(authCodes[2] ^ key);
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results[3] = Convert.ToByte(authCodes[3] ^ key);
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results[4] = Convert.ToByte(authCodes[4] ^ key);
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results[5] = Convert.ToByte(authCodes[5] ^ key);
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results[6] = Convert.ToByte(authCodes[6] ^ key);
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results[7] = Convert.ToByte(authCodes[7] ^ key);
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}
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return results;
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}
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/// <summary>
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/// 获取鉴权消息体字节数组
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/// </summary>
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/// <param name="auth"></param>
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/// <returns>鉴权消息体字节数组</returns>
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private byte[] GetMsgContents(Auth auth)
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{
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byte[] results = null;
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if (auth!=null)
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{
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List<byte> lstContent = new List<byte>();
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lstContent.Add(auth.RecordType);
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lstContent.Add(auth.ClientType);
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lstContent.AddRange(BitConverter.GetBytes(auth.ConnSeq));
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lstContent.AddRange(auth.AuthCodes);
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lstContent.Add(auth.AuthCodeKey);
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results = lstContent.ToArray();
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}
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return results;
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}
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}
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}
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