public DecodedMessage PDUDecoder(int SmsIndex, string strPDU)
{
int lenSCA = 0; //错误PDU时可能抛出异常
int lenOA;
int lenPDU = strPDU.Length;
try
{
lenSCA = Convert.ToInt32(strPDU.Substring(0, 2), 16) * 2 + 2; //短消息中心占长度
//int lenSCA = Convert.ToInt32(strPDU.Substring(0, 2), 16) * 2 + 2; //短消息中心占长度
serviceCenterAddress = strPDU.Substring(0, lenSCA);
//PDU-type位组
protocolDataUnitType = strPDU.Substring(lenSCA, 2);
lenOA = Convert.ToInt32(strPDU.Substring(lenSCA + 2, 2), 16); //OA占用长度
if (lenOA % 2 == 1) //奇数则加1 F位
{
lenOA++;
}
lenOA += 4; //加号码编码的头部长度
originatorAddress = strPDU.Substring(lenSCA + 2, lenOA);
dataCodingScheme = strPDU.Substring(lenSCA + lenOA + 4, 2); //DCS赋值，区分解码7bit
serviceCenterTimeStamp = strPDU.Substring(lenSCA + lenOA + 6, 14);
userDataLength = strPDU.Substring(lenSCA + lenOA + 20, 2);
int lenUD = Convert.ToInt32(userDataLength, 16) * 2;
}
catch (Exception ex)
{
//由于解码出来SubString中引用的长度与字StrPdu实际长度不一致，因而加大异常捕获范围
throw new Exception(ex.Message + " PDU:" + strPDU);
}
if ((Convert.ToInt32(protocolDataUnitType, 16) & 0x40) != 0) //长短信
{
if (dataCodingScheme.Substring(1, 1) == "8") //USC2 长短信 去掉消息头
{
try
{
userDataLength = (Convert.ToInt16(strPDU.Substring(lenSCA + lenOA + 20, 2), 16) - 6).ToString("X2");
userData = strPDU.Substring(lenSCA + lenOA + 22 + 6 * 2);
}
catch (Exception ex)
{
//由于解码出来SubString中引用的长度与字StrPdu实际长度不一致，因而加大异常捕获范围
throw new Exception(ex.Message + " LongMSG1-PDU:" + strPDU);
}
return(new DecodedMessage(SmsIndex, strPDU.Substring(lenSCA + lenOA + 22 + 4 * 2, 2 * 2)
+ strPDU.Substring(lenSCA + lenOA + 22 + 3 * 2, 2)
, ServiceCenterAddress
, ServiceCenterTimeStamp.Substring(0, 4) + "-" + ServiceCenterTimeStamp.Substring(4, 2) + "-"
+ ServiceCenterTimeStamp.Substring(6, 2) + " " + ServiceCenterTimeStamp.Substring(8, 2) + ":"
+ ServiceCenterTimeStamp.Substring(10, 2) + ":" + ServiceCenterTimeStamp.Substring(12, 2)
, OriginatorAddress, UserData, UserData_Old));
}
else
{
try
{
userData = strPDU.Substring(lenSCA + lenOA + 22 + 6 * 2 + 1 * 2); //消息头六字节,第一字节特殊译码 >>7
}
catch (Exception ex)
{
//由于解码出来SubString中引用的长度与字StrPdu实际长度不一致，因而加大异常捕获范围
throw new Exception(ex.Message + " LongMSG2-PDU:" + strPDU);
}
//首字节译码
byte byt = Convert.ToByte(strPDU.Substring(lenSCA + lenOA + 22 + 6 * 2, 2), 16);
char first = (char)(byt >> 1);
return(new DecodedMessage(SmsIndex, strPDU.Substring(lenSCA + lenOA + 22 + 4 * 2, 2 * 2)
+ strPDU.Substring(lenSCA + lenOA + 22 + 3 * 2, 2)
, ServiceCenterAddress
, ServiceCenterTimeStamp.Substring(0, 4) + "-" + ServiceCenterTimeStamp.Substring(4, 2) + "-"
+ ServiceCenterTimeStamp.Substring(6, 2) + " " + ServiceCenterTimeStamp.Substring(8, 2) + ":"
+ ServiceCenterTimeStamp.Substring(10, 2) + ":" + ServiceCenterTimeStamp.Substring(12, 2)
, OriginatorAddress
, first + UserData, UserData_Old));
}
}
try
{
userData = strPDU.Substring(lenSCA + lenOA + 22);
}
catch (Exception ex)
{
//由于解码出来SubString中引用的长度与字StrPdu实际长度不一致，因而加大异常捕获范围
throw new Exception(ex.Message + " SMSUserData-PDU:" + strPDU);
}
return(new DecodedMessage(SmsIndex, "010100"
, ServiceCenterAddress
, ServiceCenterTimeStamp.Substring(0, 4) + "-" + ServiceCenterTimeStamp.Substring(4, 2) + "-"
+ ServiceCenterTimeStamp.Substring(6, 2) + " " + ServiceCenterTimeStamp.Substring(8, 2) + ":"
+ ServiceCenterTimeStamp.Substring(10, 2) + ":" + ServiceCenterTimeStamp.Substring(12, 2)
, OriginatorAddress
, UserData, UserData_Old));
}
/*
* /// <summary>
* /// 完成手机或短信猫收到PDU格式短信的解码 暂时仅支持中文编码
* /// 未用DCS部分
* /// </summary>
* /// <param name="strPDU">短信PDU字符串</param>
* /// <param name="msgCenter">短消息服务中心 输出</param>
* /// <param name="phone">发送方手机号码 输出</param>
* /// <param name="msg">短信内容 输出</param>
* /// <param name="time">时间字符串 输出</param>
* public void PDUDecoder(string strPDU, out string msgCenter, out string phone, out string msg, out string time)
* {
* int lenSCA = Convert.ToInt32(strPDU.Substring(0, 2), 16) * 2 + 2; //短消息中心占长度
* serviceCenterAddress = strPDU.Substring(0, lenSCA);
*
* int lenOA = Convert.ToInt32(strPDU.Substring(lenSCA + 2, 2),16); //OA占用长度
* if (lenOA % 2 == 1) //奇数则加1 F位
* {
* lenOA++;
* }
* lenOA += 4; //加号码编码的头部长度
* originatorAddress = strPDU.Substring(lenSCA + 2, lenOA);
*
* dataCodingScheme = strPDU.Substring(lenSCA + lenOA + 4, 2); //DCS赋值，区分解码7bit
*
* serviceCenterTimeStamp = strPDU.Substring(lenSCA + lenOA + 6, 14);
*
* userDataLenghth = strPDU.Substring(lenSCA + lenOA + 20, 2);
* int lenUD = Convert.ToInt32(userDataLenghth, 16) * 2;
* userData = strPDU.Substring(lenSCA + lenOA + 22);
*
* msgCenter = ServiceCenterAddress;
* phone = OriginatorAddress;
* msg = UserData;
* time = ServiceCenterTimeStamp;
* }
*/
#endregion 解码注释掉
/// <summary>
/// 重载 解码，返回信息字符串 格式
/// </summary>
/// <param name="strPDU">短信PDU字符串</param>
/// <returns>信息字符串（MMNN,中心号码，手机号码，发送时间，短信内容 MM这批短信总条数 NN本条所在序号）</returns>
public DecodedMessage PDUDecoder(string strPDU)
{
int lenSCA = Convert.ToInt32(strPDU.Substring(0, 2), 16) * 2 + 2; //短消息中心占长度
serviceCenterAddress = strPDU.Substring(0, lenSCA);
//PDU-type位组
protocolDataUnitType = strPDU.Substring(lenSCA, 2);
int lenOA = Convert.ToInt32(strPDU.Substring(lenSCA + 2, 2), 16); //OA占用长度
if (lenOA % 2 == 1) //奇数则加1 F位
{
lenOA++;
}
lenOA += 4; //加号码编码的头部长度
originatorAddress = strPDU.Substring(lenSCA + 2, lenOA);
dataCodingScheme = strPDU.Substring(lenSCA + lenOA + 4, 2); //DCS赋值，区分解码7bit
serviceCenterTimeStamp = strPDU.Substring(lenSCA + lenOA + 6, 14);
userDataLenghth = strPDU.Substring(lenSCA + lenOA + 20, 2);
int lenUD = Convert.ToInt32(userDataLenghth, 16) * 2;
if ((Convert.ToInt32(protocolDataUnitType, 16) & 0x40) != 0) //长短信
{
if (dataCodingScheme.Substring(1, 1) == "8") //USC2 长短信 去掉消息头
{
userDataLenghth = (Convert.ToInt16(strPDU.Substring(lenSCA + lenOA + 20, 2), 16) - 6).ToString("X2");
userData = strPDU.Substring(lenSCA + lenOA + 22 + 6 * 2);
return(new DecodedMessage(strPDU.Substring(lenSCA + lenOA + 22 + 4 * 2, 2 * 2)
+ strPDU.Substring(lenSCA + lenOA + 22 + 3 * 2, 2)
, ServiceCenterAddress
, ServiceCenterTimeStamp.Substring(0, 4) + "-" + ServiceCenterTimeStamp.Substring(4, 2) + "-"
+ ServiceCenterTimeStamp.Substring(6, 2) + " " + ServiceCenterTimeStamp.Substring(8, 2) + ":"
+ ServiceCenterTimeStamp.Substring(10, 2) + ":" + ServiceCenterTimeStamp.Substring(12, 2)
, OriginatorAddress, UserData));
}
else
{
userData = strPDU.Substring(lenSCA + lenOA + 22 + 6 * 2 + 1 * 2); //消息头六字节,第一字节特殊译码 >>7
//首字节译码
byte byt = Convert.ToByte(strPDU.Substring(lenSCA + lenOA + 22 + 6 * 2, 2), 16);
char first = (char)(byt >> 1);
return(new DecodedMessage(strPDU.Substring(lenSCA + lenOA + 22 + 4 * 2, 2 * 2)
+ strPDU.Substring(lenSCA + lenOA + 22 + 3 * 2, 2)
, ServiceCenterAddress
, ServiceCenterTimeStamp.Substring(0, 4) + "-" + ServiceCenterTimeStamp.Substring(4, 2) + "-"
+ ServiceCenterTimeStamp.Substring(6, 2) + " " + ServiceCenterTimeStamp.Substring(8, 2) + ":"
+ ServiceCenterTimeStamp.Substring(10, 2) + ":" + ServiceCenterTimeStamp.Substring(12, 2)
, OriginatorAddress
, first + UserData));
}
}
userData = strPDU.Substring(lenSCA + lenOA + 22);
return(new DecodedMessage("010100"
, ServiceCenterAddress
, ServiceCenterTimeStamp.Substring(0, 4) + "-" + ServiceCenterTimeStamp.Substring(4, 2) + "-"
+ ServiceCenterTimeStamp.Substring(6, 2) + " " + ServiceCenterTimeStamp.Substring(8, 2) + ":"
+ ServiceCenterTimeStamp.Substring(10, 2) + ":" + ServiceCenterTimeStamp.Substring(12, 2)
, OriginatorAddress
, UserData));
}
