SMS PDU编码

短信中心地址长度包括‘91’和‘F’（单位：字节）　短信中心地址类型国际格式‘91’　短信中心地址SCA前面要加‘86’，补‘F’凑成偶数　信息头字节‘11’正常发送、‘31’需要状态报告、‘51’有报头短信TP-RP TP-UDHI TP-SRR TP-VPF[2]
TP-RD TP-MTI[2]消息基准值TP-MR‘00’无目标号码长度不包括‘91’和‘F’（单位：位数）　目标号码格式国际格式‘91’　目标号码TPA前面要加‘86’，补‘F’凑成偶数　协议标识TP-PID‘00’　用户信息编码方式TP-DCS‘00’7-bit、‘08’UCS2、‘15’8-bit（‘F5’UTF-8）(bit4=1闪信)　有效期TP-VP‘00’-‘8F’：(VP+1)*5 分钟时间戳TP-SCTS，14位信息长度TP-UDL7-bit编码：指原始短消息的字符个数；
8-bit、UCS2编码：指编码后字节数；
有信息头：等于头长度与编码后字节数之和。　信息头总长度各个IE长度总和　Information Element Identifier‘05’表示WAP PUSH　Information Element Length‘04’　Destination Port‘0B84’　Originating Port‘23F0’　Information Element Identifier‘00’表示长短信，8-bit reference number；
‘08’表示长短信，16-bit reference number；
（对于7-bit编码超长短信，协议头要凑够7位长度）　Information Element Length‘03’　Reference Number　　Total Packet　　Current Packet　　WSP Header‘29060603AE81EA8DCA’　XML固定格式‘02056A0045C6080C03’　URL不带http://　XML固定格式‘000103’　内容　XML固定格式‘000101’　

 

 

 

using System;using System.Collections.Generic;using System.Text;using System.IO;namespace Sms{ enum PduEncoding { Bit7 = 1, UCS2 = 2, UTF8 = 3 } class SmParam { public byte totalPacket = 1; public byte currentPacket = 1; public string fromNumber = ""; public string sendTime = ""; public string url = ""; public string msgContent = ""; public PduEncoding encoding = PduEncoding.Bit7; override public string ToString() { string str = String.Format("[{0}]{1}:", sendTime, fromNumber); if (totalPacket > 1) { str = String.Format("{0}{1}/{2}", str, currentPacket, totalPacket); } if (url.Length > 0) { str = String.Format("{0}<{1}>", str, url); } str = String.Format("{0}{1}", str, msgContent); return str; } } class SmsPdu { private string InvertNumbers(string num) { string str = ""; if (num.Length > 0) { num = "86" + num; if (num.Length % 2 != 0) { num = num + "F"; } for (int i = 0; i < num.Length; i += 2) { str += num[i + 1]; str += num[i]; } str = "91" + str; } return str; } private string SerializeNumbers(string num) { string str = ""; if (num.Length > 0) { for (int i = 0; i < num.Length; i += 2) { str += num[i + 1]; str += num[i]; } if (str.StartsWith("86")) { str = str.Remove(0, 2); } if (str.EndsWith("F")) { str = str.Remove(str.Length - 1); } } return str; } private string SerializeSendTime(string time) { string str = ""; for (int i = 0; i < time.Length; i += 2) { str += time[i + 1]; str += time[i]; } string year = str.Substring(0, 2); string mon = str.Substring(2, 2); string date = str.Substring(4, 2); string hour = str.Substring(6, 2); string min = str.Substring(8, 2); string sec = str.Substring(10, 2); return String.Format("{0}-{1}-{2} {3}:{4}:{5}", year, mon, date, hour, min, sec); } public string EncodeUCS2(string message) { string str = ""; //byte[] buf = Encoding.BigEndianUnicode.GetBytes(message); //for (int i = 0; i < buf.Length; i++) //{ // str += buf[i].ToString("X2"); //} byte[] buf = Encoding.Unicode.GetBytes(message); for (int i = 0; i < buf.Length; i += 2) { str += buf[i + 1].ToString("X2"); str += buf[i].ToString("X2"); } return str; } public string DecodeUCS2(string message) { byte[] buf = new byte[message.Length / 2]; for (int i = 0; i <= message.Length - 4; i += 4) { buf[i / 2] = byte.Parse(message.Substring(i + 2, 2), System.Globalization.NumberStyles.AllowHexSpecifier); buf[i / 2 + 1] = byte.Parse(message.Substring(i, 2), System.Globalization.NumberStyles.AllowHexSpecifier); } return Encoding.Unicode.GetString(buf); } public string EncodeUTF8(string message) { string str = ""; byte[] buf = Encoding.UTF8.GetBytes(message); for (int i = 0; i < buf.Length; i++) { str += buf[i].ToString("X2"); } return str; } public string DecodeUTF8(string message) { byte[] buf = new byte[message.Length / 2]; for (int i = 0; i <= message.Length - 2; i += 2) { buf[i / 2] = byte.Parse(message.Substring(i, 2), System.Globalization.NumberStyles.AllowHexSpecifier); } return Encoding.UTF8.GetString(buf); } public string EncodeBit7(string message) { int leftPart = 0; string bit7Str = ""; for (int i = 0; i < message.Length; i++) { int n = i & 7; int curChar = message[i]; if (n == 0) { leftPart = curChar; } else { bit7Str = String.Format("{0}{1:X2}", bit7Str, (byte)(curChar << (8 - n) | leftPart)); leftPart = curChar >> n; } } if (leftPart != 0) { bit7Str = String.Format("{0}{1:X2}", bit7Str, (byte)leftPart); } return bit7Str; } public string DecodeBit7(string message) { int n = 0; int leftPart = 0; string str = ""; for (int i = 0; i < message.Length - 2; i += 2) { byte tmp = byte.Parse(message.Substring(i, 2), System.Globalization.NumberStyles.AllowHexSpecifier); str += (((tmp << n) | leftPart) & 0x7F).ToString("X2"); leftPart = tmp >> (7 - n); n++; if (n == 7) { str += leftPart.ToString("X2"); n = 0; leftPart = 0; } } byte[] buf = new byte[str.Length / 2]; for (int i = 0; i <= str.Length - 2; i += 2) { buf[i / 2] = byte.Parse(str.Substring(i, 2), System.Globalization.NumberStyles.AllowHexSpecifier); } return Encoding.ASCII.GetString(buf); } private string LongSmsHeader(byte totalPacket, byte currentPacket) { byte IEI = 0x00; byte IELength = 0x03; byte referenceNumber = 0xA0; return String.Format("{0:X2}{1:X2}{2:X2}{3:X2}{4:X2}", IEI, IELength, referenceNumber, totalPacket, currentPacket); } private string LongSmsHeaderBit7(byte totalPacket, byte currentPacket) { byte IEI = 0x08; byte IELength = 0x04; ushort referenceNumber = 0x00A0; return String.Format("{0:X2}{1:X2}{2:X4}{3:X2}{4:X2}", IEI, IELength, referenceNumber, totalPacket, currentPacket); } private string PushSmsHeader() { byte IEI = 0x05; byte IELength = 0x04; ushort destinationPort = 0x0B84; ushort originatingPort = 0x23F0; return String.Format("{0:X2}{1:X2}{2:X4}{3:X4}", IEI, IELength, destinationPort, originatingPort); } private string PushSmsBody(string url, string msg) { string wspHeader = "29060603AE81EA8DCA"; string afterWsp = "02056A0045C6080C03"; string afterUrl = "000103"; string afterMsg = "000101"; return wspHeader + afterWsp + url + afterUrl + msg + afterMsg; } private string SCA(string smsc) { string sca = InvertNumbers(smsc); byte scaLength = (byte)(sca.Length / 2); return String.Format("{0:X2}{1}", scaLength, sca); } private string TPA(string number) { string tpa = InvertNumbers(number); byte tpaLength = (byte)(number.Length + 2); return String.Format("{0:X2}{1}", tpaLength, tpa); } public string EncodePdu(string number, string message, PduEncoding encoding) { return EncodePdu(number, message, "", 1, 1, encoding); } public string EncodePdu(string number, string message, string url) { return EncodePdu(number, message, url, 1, 1, PduEncoding.UTF8); } public string EncodePdu(string number, string message, byte totalPacket, byte currentPacket, PduEncoding encoding) { return EncodePdu(number, message, "", totalPacket, currentPacket, encoding); } public string EncodePdu(string number, string message, string url, byte totalPacket, byte currentPacket, PduEncoding encoding) { bool isLongSms = totalPacket > 1 ? true : false; bool isPushSms = url.Length > 0 ? true : false; string smsc = ""; byte tp_head = 0x11; byte tp_mr = 0x00; byte tp_pid = 0x00; byte tp_dcs = 0x00; byte tp_vp = 0x00; byte tp_udl = 0x00; byte tp_udhl = 0x00; string tp_udh = ""; string tp_ud = ""; if (isPushSms) { tp_head = 0x51; tp_dcs = 0xF5; tp_ud = PushSmsBody(EncodeUTF8(url), EncodeUTF8(message)); tp_udh = PushSmsHeader(); if (isLongSms) { tp_udh += LongSmsHeader(totalPacket, currentPacket); } tp_udhl = (byte)(tp_udh.Length / 2); tp_udl = (byte)((tp_udh.Length + tp_ud.Length) / 2); } else { if (encoding == PduEncoding.Bit7) { tp_dcs = 0x00; tp_ud = EncodeBit7(message); if (isLongSms) { tp_head = 0x51; tp_udh = LongSmsHeaderBit7(totalPacket, currentPacket); tp_udhl = (byte)(tp_udh.Length / 2); tp_udl = (byte)((tp_udh.Length + tp_ud.Length) / 20); } else { tp_udl = (byte)(message.Length); } } else if (encoding == PduEncoding.UCS2) { tp_dcs = 0x08; tp_ud = EncodeUCS2(message); if (isLongSms) { tp_head = 0x51; tp_udh = LongSmsHeader(totalPacket, currentPacket); tp_udhl = (byte)(tp_udh.Length / 2); } tp_udl = (byte)((tp_udh.Length + tp_ud.Length) / 2); } } string pdu = ""; pdu += SCA(smsc); pdu += tp_head.ToString("X2"); pdu += tp_mr.ToString("X2"); pdu += TPA(number); pdu += tp_pid.ToString("X2"); pdu += tp_dcs.ToString("X2"); pdu += tp_vp.ToString("X2"); pdu += tp_udl.ToString("X2"); if (isLongSms || isPushSms) { pdu += tp_udhl.ToString("X2"); pdu += tp_udh; } pdu += tp_ud; return pdu; } public SmParam DecodePdu(string pduString) { string debugmsg = ""; SmParam smParam = new SmParam(); try { int pos = 0; byte scaLength = byte.Parse(pduString.Substring(pos, 2), System.Globalization.NumberStyles.AllowHexSpecifier); debugmsg = String.Format("{0}scaLength: {1}/n", debugmsg, pduString.Substring(pos, 2)); scaLength *= 2; pos += 2; if (scaLength > 0) { string sca = pduString.Substring(pos, scaLength); debugmsg = String.Format("{0}sca: {1}/n", debugmsg, pduString.Substring(pos, scaLength)); pos += scaLength; } //string headerByte = pduString.Substring(pos, 2); byte headerByte = byte.Parse(pduString.Substring(pos, 2), System.Globalization.NumberStyles.HexNumber); debugmsg = String.Format("{0}headerByte: {1}/n", debugmsg, pduString.Substring(pos, 2)); pos += 2; byte tpaLength = byte.Parse(pduString.Substring(pos, 2), System.Globalization.NumberStyles.AllowHexSpecifier); debugmsg = String.Format("{0}tpaLength: {1}/n", debugmsg, pduString.Substring(pos, 2)); if (tpaLength % 2 != 0) { tpaLength += 1; } pos += 2; pos += 2; string tpa = pduString.Substring(pos, tpaLength); debugmsg = String.Format("{0}tpa: {1}/n", debugmsg, pduString.Substring(pos, tpaLength)); pos += tpaLength; smParam.fromNumber = SerializeNumbers(tpa); string tp_pid = pduString.Substring(pos, 2); debugmsg = String.Format("{0}tp_pid: {1}/n", debugmsg, pduString.Substring(pos, 2)); pos += 2; string tp_dcs = pduString.Substring(pos, 2); debugmsg = String.Format("{0}tp_dcs: {1}/n", debugmsg, pduString.Substring(pos, 2)); pos += 2; string tp_scts = pduString.Substring(pos, 14); debugmsg = String.Format("{0}tp_scts: {1}/n", debugmsg, pduString.Substring(pos, 14)); pos += 14; smParam.sendTime = SerializeSendTime(tp_scts); byte tp_udl = byte.Parse(pduString.Substring(pos, 2), System.Globalization.NumberStyles.AllowHexSpecifier); debugmsg = String.Format("{0}tp_udl: {1}/n", debugmsg, pduString.Substring(pos, 2)); pos += 2; ushort tp_udhl = 0; bool isLongSms = false; bool isPushSms = false; //if (headerByte == "44" || headerByte == "40" || headerByte == "60" || headerByte == "64") if ((headerByte & 0x40) == 0x40) { tp_udhl = byte.Parse(pduString.Substring(pos, 2), System.Globalization.NumberStyles.AllowHexSpecifier); debugmsg = String.Format("{0}tp_udhl: {1}/n", debugmsg, pduString.Substring(pos, 2)); pos += 2; int tempPos = 0; while (true) { string iei = pduString.Substring(pos, 2); debugmsg = String.Format("{0}iei: {1}/n", debugmsg, pduString.Substring(pos, 2)); pos += 2; byte ieiLength = byte.Parse(pduString.Substring(pos, 2), System.Globalization.NumberStyles.AllowHexSpecifier); debugmsg = String.Format("{0}ieiLength: {1}/n", debugmsg, pduString.Substring(pos, 2)); pos += 2; switch (iei) { case "00": isLongSms = true; pos += 2; smParam.totalPacket = byte.Parse(pduString.Substring(pos, 2), System.Globalization.NumberStyles.AllowHexSpecifier); debugmsg = String.Format("{0}totalPacket: {1}/n", debugmsg, pduString.Substring(pos, 2)); pos += 2; smParam.currentPacket = byte.Parse(pduString.Substring(pos, 2), System.Globalization.NumberStyles.AllowHexSpecifier); debugmsg = String.Format("{0}currentPacket: {1}/n", debugmsg, pduString.Substring(pos, 2)); pos += 2; break; case "08": isLongSms = true; pos += 4; smParam.totalPacket = byte.Parse(pduString.Substring(pos, 2), System.Globalization.NumberStyles.AllowHexSpecifier); debugmsg = String.Format("{0}totalPacket: {1}/n", debugmsg, pduString.Substring(pos, 2)); pos += 2; smParam.currentPacket = byte.Parse(pduString.Substring(pos, 2), System.Globalization.NumberStyles.AllowHexSpecifier); debugmsg = String.Format("{0}currentPacket: {1}/n", debugmsg, pduString.Substring(pos, 2)); pos += 2; break; case "05": isPushSms = true; pos += 4; pos += 4; break; } tempPos += (2 + ieiLength); if (tempPos == tp_udhl) break; } } string url = ""; string msg = pduString.Substring(pos); if (isPushSms) { string mmsMessage = "6170706C69636174696F6E2F766E642E7761702E6D6D732D6D657373616765"; if (msg.IndexOf(mmsMessage) >= 0) { string beforeUrl = "008D9083"; string afterUrl = "008805810302A300891780"; string afterMsg = "008A808E"; int urlStartPos = msg.IndexOf(beforeUrl) >= 0 ? msg.IndexOf(beforeUrl) + beforeUrl.Length : -1; int urlEndPos = msg.IndexOf(afterUrl); int msgStartPos = msg.IndexOf(afterUrl) >= 0 ? msg.IndexOf(afterUrl) + afterUrl.Length : -1; int msgEndPos = msg.IndexOf(afterMsg); debugmsg = String.Format("{0}mmsMessage: {1}/n", debugmsg, mmsMessage); debugmsg = String.Format("{0}beforeUrl: {1}/n", debugmsg, beforeUrl); if (urlStartPos >= 0 && urlEndPos >= 0 && urlEndPos > urlStartPos) { url = msg.Substring(urlStartPos, urlEndPos - urlStartPos); debugmsg = String.Format("{0}url: {1}/n", debugmsg, url); } debugmsg = String.Format("{0}afterUrl: {1}/n", debugmsg, afterUrl); if (msgStartPos >= 0 && msgEndPos >= 0 && msgEndPos > msgStartPos) { msg = msg.Substring(msgStartPos, msgEndPos - msgStartPos); debugmsg = String.Format("{0}msg: {1}/n", debugmsg, msg); } debugmsg = String.Format("{0}afterMsg: {1}/n", debugmsg, afterMsg); } } switch (tp_dcs) { case "00": smParam.encoding = PduEncoding.Bit7; smParam.msgContent = DecodeBit7(msg); break; case "08": smParam.encoding = PduEncoding.UCS2; smParam.msgContent = DecodeUCS2(msg); break; default: smParam.encoding = PduEncoding.UTF8; smParam.msgContent = DecodeUTF8(msg); smParam.url = DecodeUTF8(url); break; } debugmsg = String.Format("{0}msg: {1}/n", debugmsg, msg); debugmsg = String.Format("{0}msg: {1}/n", debugmsg, smParam.msgContent); StreamWriter sw = new StreamWriter("decode.txt", true, Encoding.Unicode); sw.WriteLine(pduString); sw.WriteLine(debugmsg); sw.Close(); return smParam; } catch (System.Exception e) { return smParam; } } }}