95 lines
3.0 KiB
C#
95 lines
3.0 KiB
C#
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using System;
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using System.Text;
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namespace GemCard
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{
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/// <summary>
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/// This class represents a command APDU
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/// </summary>
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public class APDUCommand
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{
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/// <summary>
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/// Minimun size of an APDU command in bytes
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/// </summary>
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public const int APDU_MIN_LENGTH = 4;
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public byte Class; /// Class byte
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public byte Ins; /// Instruction byte
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public byte P1; /// Parameter P1 byte
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public byte P2; /// Parameter P2 byte
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public byte[] Data; /// Data to send to the card if any, null if no data to send
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public byte Le; /// Number of data expected, 0 if none
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/// <summary>
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/// Constructor
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/// </summary>
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/// <param name="bCla">Class byte</param>
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/// <param name="bIns">Instruction byte</param>
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/// <param name="bP1">Parameter P1 byte</param>
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/// <param name="bP2">Parameter P2 byte</param>
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/// <param name="baData">Data to send to the card if any, null if no data to send</param>
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/// <param name="bLe">Number of data expected, 0 if none</param>
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public APDUCommand(byte bCla, byte bIns, byte bP1, byte bP2, byte[] baData, byte bLe)
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{
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this.Class = bCla;
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this.Ins = bIns;
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this.P1 = bP1;
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this.P2 = bP2;
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this.Data = baData;
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this.Le = bLe;
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}
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/// <summary>
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/// Update the current APDU with selected parameters
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/// </summary>
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/// <param name="apduParam">APDU parameters</param>
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public void Update(APDUParam apduParam)
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{
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if (apduParam.UseData) Data = apduParam.Data;
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if (apduParam.UseLe) Le = apduParam.Le;
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if (apduParam.UseP1) P1 = apduParam.P1;
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if (apduParam.UseP2) P2 = apduParam.P2;
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if (apduParam.UseChannel) Class += apduParam.Channel;
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}
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/// <summary>
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/// Overrides the ToString method to format to a string the APDUCommand object
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/// </summary>
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/// <returns></returns>
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public override string ToString()
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{
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string strData = null;
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byte bLc = 0;
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byte bP3 = Le;
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if (Data != null)
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{
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StringBuilder sData = new StringBuilder(Data.Length * 2);
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for (int nI = 0; nI < Data.Length; nI++)
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{
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sData.AppendFormat("{0:X02}", Data[nI]);
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}
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strData = "Data=" + sData.ToString();
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bLc = (byte) Data.Length;
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bP3 = bLc;
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}
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//string strApdu = string.Format("Class={0:X02} Ins={1:X02} P1={2:X02} P2={3:X02} Le={4:X02} Lc={5:X02} ",
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//m_bCla, m_bIns, m_bP1, m_bP2, m_bLe, bLc);
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StringBuilder strApdu = new StringBuilder();
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strApdu.AppendFormat("Class={0:X02} Ins={1:X02} P1={2:X02} P2={3:X02} P3={4:X02} ",
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Class, Ins, P1, P2, bP3);
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if (Data != null)
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{
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strApdu.Append(strData);
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}
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return strApdu.ToString();
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}
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}
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}
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