迅雷种子文件——解析Torrent文件.doc

对于这个类在解析Torrent 文件时候可能有错误，请大家指正。先把文件解析的类贴出来，连接有空再发把。使用TorrentFile File = new TorrentFile(openFileDialog1.FileName);File.TorrentFileInfoClass 文件信息File.TorrentAnnounceList 服务器列表全部代码using System;using System.Collections.Generic;using System.Text;using System.Windows.Forms;using System.Collections;namespace Zgke.OtherFile / / Torrent文件 / ZgkeS / 2008-08-28 / public class TorrentFile #region 私有字段 private string _OpenError = ; private bool _OpenFile = false; private string _TorrentAnnounce = ; private IList _TorrentAnnounceList = new List(); private DateTime _TorrentCreateTime = new DateTime(1970,1,1,0,0,0); private long _TorrentCodePage = 0; private string _TorrentComment = ; private string _TorrentCreatedBy = ; private string _TorrentEncoding = ; private string _TorrentCommentUTF8 = ; private IList _TorrentFileInfo = new List(); private string _TorrentName = ; private string _TorrentNameUTF8 = ; private long _TorrentPieceLength = 0; private byte _TorrentPieces; private string _TorrentPublisher = ; private string _TorrentPublisherUTF8 = ; private string _TorrentPublisherUrl = ; private string _TorrentPublisherUrlUTF8 = ; private IList _TorrentNotes = new List(); #endregion #region 属性 / / 错误信息 / public string OpenError set _OpenError = value; get return _OpenError; / / 是否正常打开文件 / public bool OpenFile set _OpenFile = value; get return _OpenFile; / / 服务器的URL(字符串) / public string TorrentAnnounce set _TorrentAnnounce = value; get return _TorrentAnnounce; / / 备用tracker服务器列表(列表) / public IList TorrentAnnounceList set _TorrentAnnounceList = value; get return _TorrentAnnounceList; / / 种子创建的时间，Unix标准时间格式，从1970 1月1日 00:00:00到创建时间的秒数(整数) / public DateTime TorrentCreateTime set _TorrentCreateTime = value; get return _TorrentCreateTime; / / 未知数字CodePage / public long TorrentCodePage set _TorrentCodePage = value; get return _TorrentCodePage; / / 种子描述 / public string TorrentComment set _TorrentComment = value; get return _TorrentComment; / / 编码方式 / public string TorrentCommentUTF8 set _TorrentCommentUTF8 = value; get return _TorrentCommentUTF8; / / 创建人 / public string TorrentCreatedBy set _TorrentCreatedBy = value; get return _TorrentCreatedBy; / / 编码方式 / public string TorrentEncoding set _TorrentEncoding = value; get return _TorrentEncoding; / / 文件信息 / public IList TorrentFileInfo set _TorrentFileInfo = value; get return _TorrentFileInfo; / / 种子名 / public string TorrentName set _TorrentName = value; get return _TorrentName; / / 种子名UTF8 / public string TorrentNameUTF8 set _TorrentNameUTF8 = value; get return _TorrentNameUTF8; / / 每个块的大小，单位字节(整数) / public long TorrentPieceLength set _TorrentPieceLength = value; get return _TorrentPieceLength; / / 每个块的20个字节的SHA1 Hash的值(二进制格式) / private byte TorrentPieces set _TorrentPieces = value; get return _TorrentPieces; / / 出版 / public string TorrentPublisher set _TorrentPublisher = value; get return _TorrentPublisher; / / 出版UTF8 / public string TorrentPublisherUTF8 set _TorrentPublisherUTF8 = value; get return _TorrentPublisherUTF8; / / 出版地址 / public string TorrentPublisherUrl set _TorrentPublisherUrl = value; get return _TorrentPublisherUrl; / / 出版地址 / public string TorrentPublisherUrlUTF8 set _TorrentPublisherUrlUTF8 = value; get return _TorrentPublisherUrlUTF8; / / NODES / public IList TorrentNotes set _TorrentNotes = value; get return _TorrentNotes; #endregion public TorrentFile(string FileName) System.IO.FileStream TorrentFile = new System.IO.FileStream(FileName, System.IO.FileMode.Open); byte TorrentBytes = new byteTorrentFile.Length; TorrentFile.Read(TorrentBytes, 0, TorrentBytes.Length); TorrentFile.Close(); if (char)TorrentBytes0 != d) if (OpenError.Length = 0) OpenError = 错误的Torrent文件，开头第1字节不是100; return; GetTorrentData(TorrentBytes); #region 开始读数据 / / 开始读取 / / private void GetTorrentData(byte TorrentBytes) int StarIndex = 1; while (true) object Keys = GetKeyText(TorrentBytes, ref StarIndex); if (Keys = null) if (StarIndex = TorrentBytes.Length) OpenFile = true; break; if (GetValueText(TorrentBytes, ref StarIndex, Keys.ToString().ToUpper() = false) break; #endregion / / 读取结构 / / / / / private bool GetValueText(byte TorrentBytes,ref int StarIndex, string Keys) switch (Keys) case ANNOUNCE: TorrentAnnounce = GetKeyText(TorrentBytes, ref StarIndex).ToString(); break; case ANNOUNCE-LIST: int ListCount = 0; ArrayList _TempList=GetKeyData(TorrentBytes, ref StarIndex, ref ListCount); for (int i = 0; i != _TempList.Count; i+) TorrentAnnounceList.Add(_TempListi.ToString(); break; case CREATION DATE: object Date = GetKeyNumb(TorrentBytes, ref StarIndex).ToString(); if (Date = null) if (OpenError.Length = 0) OpenError = CREATION DATE 返回不是数字类型; return false; TorrentCreateTime = TorrentCreateTime.AddTicks(long.Parse(Date.ToString(); break; case CODEPAGE: object CodePageNumb = GetKeyNumb(TorrentBytes, ref StarIndex); if (CodePageNumb = null) if (OpenError.Length = 0) OpenError = CODEPAGE 返回不是数字类型; return false; TorrentCodePage = long.Parse(CodePageNumb.ToString(); break; case ENCODING: TorrentEncoding = GetKeyText(TorrentBytes, ref StarIndex).ToString(); break; case CREATED BY: TorrentCreatedBy = GetKeyText(TorrentBytes, ref StarIndex).ToString(); break; case COMMENT: TorrentComment = GetKeyText(TorrentBytes, ref StarIndex).ToString(); break; case COMMENT.UTF-8: TorrentCommentUTF8 = GetKeyText(TorrentBytes, ref StarIndex).ToString(); break; case INFO: int FileListCount = 0; GetFileInfo(TorrentBytes, ref StarIndex, ref FileListCount); break; case NAME: TorrentName = GetKeyText(TorrentBytes, ref StarIndex).ToString(); break; case NAME.UTF-8: TorrentNameUTF8 = GetKeyText(TorrentBytes, ref StarIndex).ToString(); break; case PIECE LENGTH: object PieceLengthNumb = GetKeyNumb(TorrentBytes, ref StarIndex); if (PieceLengthNumb = null) if (OpenError.Length = 0) OpenError = PIECE LENGTH 返回不是数字类型; return false; TorrentPieceLength = long.Parse(PieceLengthNumb.ToString(); break; case PIECES: TorrentPieces = GetKeyByte(TorrentBytes, ref StarIndex); break; case PUBLISHER: TorrentPublisher = GetKeyText(TorrentBytes, ref StarIndex).ToString(); break; case PUBLISHER.UTF-8: TorrentPublisherUTF8 = GetKeyText(TorrentBytes, ref StarIndex).ToString(); break; case PUBLISHER-URL: TorrentPublisherUrl = GetKeyText(TorrentBytes, ref StarIndex).ToString(); break; case PUBLISHER-URL.UTF-8: TorrentPublisherUrlUTF8 = GetKeyText(TorrentBytes, ref StarIndex).ToString(); break; case NODES: int NodesCount = 0; ArrayList _NodesList = GetKeyData(TorrentBytes, ref StarIndex, ref NodesCount); int IPCount= _NodesList.Count/2; for (int i = 0; i != IPCount; i+) TorrentNotes.Add(_NodesListi * 2 + : + _NodesList(i * 2) + 1); break; default: return false; return true; #region 获取数据 / / 获取列表方式 I1:Xe=X 会调用GetKeyText / / / / private ArrayList GetKeyData(byte TorrentBytes, ref int StarIndex, ref int ListCount) ArrayList _TempList = new ArrayList(); while (true) string TextStar = Encoding.UTF8.GetString(TorrentBytes, StarIndex, 1); switch (TextStar) case l: StarIndex+; ListCount+; break; case e: ListCount-; StarIndex+; if (ListCount = 0) return _TempList; break; case i: _TempList.Add(GetKeyNumb(TorrentBytes,ref StarIndex).ToString(); break; default: object ListText = GetKeyText(TorrentBytes, ref StarIndex); if (ListText != null) _TempList.Add(ListText.ToString(); else if (OpenError.Length = 0) OpenError = 错误的Torrent文件，ANNOUNCE-LIST错误; return _TempList; break; / / 获取字符串 / / / / private object GetKeyText(byte TorrentBytes, ref int StarIndex) int Numb = 0; int LeftNumb = 0; for (int i = StarIndex; i != TorrentBytes.Length; i+) if (char)TorrentBytesi = :) break; if (char)TorrentBytesi = e) LeftNumb+; continue; Numb+; StarIndex += LeftNumb; string TextNumb = Encoding.UTF8.GetString(TorrentBytes, StarIndex, Numb); try int ReadNumb = Int32.Parse(TextNumb); StarIndex = StarIndex + Numb + 1; object KeyText = Encoding.UTF8.GetString(TorrentBytes, StarIndex, ReadNumb); StarIndex += ReadNumb; return KeyText; catch return null; / / 获取数字 / / / private object GetKeyNumb(byte TorrentBytes, ref int StarIndex) if (Encoding.UTF8.GetString(TorrentBytes, StarIndex, 1) = i) int Numb = 0; for (int i = StarIndex; i != TorrentBytes.Length; i+) if (char)TorrentBytesi = e) break; Numb+; StarIndex+; long RetNumb = 0; try RetNumb=long.Parse(Encoding.UTF8.GetString(TorrentBytes, StarIndex, Numb-1); StarIndex += Numb; return RetNumb; catch return null; else return null; / / 获取BYTE数据 / / / / private byte GetKeyByte(byte TorrentBytes, ref int StarIndex) int Numb = 0; for (int i = StarIndex; i != TorrentBytes.Length; i+) if (char)TorrentBytesi = :) break; Numb+; string TextNumb = Encoding.UTF8.GetString(TorrentBytes, StarIndex, Numb); try int ReadNumb = Int32.Parse(TextNumb); StarIndex = StarIndex + Numb + 1; System.IO.MemoryStream KeyMemory = new System.IO.MemoryStream(TorrentBytes, StarIndex, ReadNumb); byte KeyBytes = new byteReadNumb; KeyMemory.Read(KeyBytes, 0, ReadNumb); KeyMemory.Close(); StarIndex += ReadNumb; return KeyBytes; catch return null; / / 对付INFO的结构 / / / / private void GetFileInfo(byte TorrentBytes,ref int StarIndex,ref int ListCount) if (char)TorrentBytesStarIndex != d) return; StarIndex+; if(GetKeyText(TorrentBytes, ref StarIndex).ToStr