public CSourcesList(CElement in_Element)
{
m_ArrayList=ArrayList.Synchronized(new ArrayList());
m_Element=in_Element;
m_Avaibility=null;
Random rnd=new Random();
m_LastTCPSearch=DateTime.MinValue; //-TimeSpan.FromSeconds(rnd.Next(60));
m_LastSourceExchangeRequest=DateTime.MinValue;
m_DownloadSpeed=0;
}
public void TryUDPDownload()
{
m_AskingUDP=true;
if ((m_EmuleProtocol)&&
(m_VersionUDP>=1)&&
(m_ID>Protocol.LowIDLimit)&&
(m_UDPPort>0)&&
(DownFileHash!=null)&&
((m_QRDownload>50)||(m_QRDownload==0))&&
((!m_SupportsPartner)||(!CKernel.Queue.AllowNewParner()))&&
!m_AllowSourceExchangeRequest())
{
#if VERBOSE
CKernel.LogClient.AddLog("Intentar Descarga UDP");
#endif
MemoryStream buffer=new MemoryStream();
if (m_DownloadElement==null) m_DownloadElement=CKernel.FilesList[DownFileHash];
if (m_DownloadElement==null) return;
CFileReaskUDP PeticionUDP=new CFileReaskUDP(buffer,DownFileHash,m_VersionUDP,m_DownloadElement.File.ChunksStatus);
IPEndPoint hostRemote=new IPEndPoint(m_ID,m_UDPPort);
CKernel.UDPListener.SendPacketUDP(buffer.GetBuffer(),hostRemote);
}
}
public void SwapToOtherFile()
{
if ((m_OtherDownFiles==null)||(m_OtherDownFiles.Count==0))
{
return;
}
byte highestPriority=0;
CElement tmpElement=null;
CElement Element=null;
int i=0;
do
{
tmpElement=(CElement)CKernel.FilesList[CKernel.StringToHash(m_OtherDownFiles[i])];
if ((tmpElement!=null)
&&(tmpElement.SourcesList!=null)
&&(!tmpElement.File.Completed)
&&(tmpElement.File.FileStatus==Protocol.FileState.Ready))
{
if ((byte)tmpElement.File.DownPriority>=highestPriority)
{
Element=tmpElement;
highestPriority=(byte)tmpElement.File.DownPriority;
}
i++;
}
else
{
m_OtherDownFiles.RemoveAt(i);
}
}
while ((i<m_OtherDownFiles.Count)&&(m_OtherDownFiles.Count>0));
// element selected to download
if (Element!=null)
{
m_OtherDownFiles.Remove(CKernel.HashToString(Element.File.FileHash));
DownFileHash=new byte[16];
Buffer.BlockCopy(Element.File.FileHash,0,DownFileHash,0,16);
m_DownloadElement=Element;
m_ClientFileName="";
m_DownloadElement.SourcesList.AddSource(this);
if ((connection!=null)&&connection.Connected)
{
m_DownloadState=Protocol.DownloadState.Connected;
TryDownload();
}
else
{
m_DownloadState=Protocol.DownloadState.None;
}
}
}
private void AddFile(CFile file)
{
if (!m_Contains(file.FileHash))
{
CElement Element=new CElement();
Element.File=file;
Element.Statistics=new CFileStatistics();
m_FileList.Add(Element);
if (((file.FileStatus==Protocol.FileState.Ready)||(Element.File.FileStatus==Protocol.FileState.Completing))&&(!file.Completed))
{
Element.SourcesList=new CSourcesList(Element);
Element.Comments=new CedonkeyComments(Element);
}
if (!file.Completed)
CKernel.NewFile(Element);
else
CKernel.NewSharedFile(Element);
}
else
{
CLog.Log(Constants.Log.Notify, "FIL_DUP",CKernel.HashToString(file.FileHash));
file=null;
}
}
public void ProcessComment(byte[] packet)
{
CComment commentCMD=new CComment(new MemoryStream(packet));
m_Comment=commentCMD.comment;
m_Rating=commentCMD.rating;
if ((m_DownloadElement==null)&&(DownFileHash!=null))
{
m_DownloadElement=CKernel.FilesList[DownFileHash];
}
if ((m_DownloadElement!=null)&&(m_DownloadElement.Comments!=null))
{
m_DownloadElement.Comments.NewComment(m_UserName,m_Rating,m_Comment);
}
}
public void OnDisconnect(byte reason)
{
connection=null;
if (m_SharedFilesRequested) CLog.Log(Constants.Log.Notify,"CLI_DONT_SEND_SHARED",m_UserName);
m_SharedFilesRequested=false;
#if VERBOSE
CKernel.LogClient.AddLog("OnDisconnect-Client",m_ID);
#endif
#if DEBUG
string strReason=CKernel.Globalization["UNK_REASON"];
switch ((Protocol.ConnectionReason)reason)
{
case Protocol.ConnectionReason.CannotConnect:
strReason=CKernel.Globalization["CANT_CONNECT"];
break;
case Protocol.ConnectionReason.ClosedConnection:
strReason=CKernel.Globalization["CONNECTION_CLOSED"];
break;
case Protocol.ConnectionReason.NullPacket:
strReason=CKernel.Globalization["NULL_PACKET"];
break;
case Protocol.ConnectionReason.NullID:
strReason=CKernel.Globalization["NULL_ID"];
break;
case Protocol.ConnectionReason.InvalidHeader:
strReason=CKernel.Globalization["INVALID_HEADER"];
break;
case Protocol.ConnectionReason.TimeOut:
strReason=CKernel.Globalization["TIMEOUT"];
break;
}
#endif
#if VERBOSE
CKernel.LogClient.AddLog("OnDisconnect-"+strReason,m_ID);
#endif
if (m_ChatMessages!=null)
{
m_ChatMessages.Clear();
m_ChatMessages=null;
}
if (m_UploadState==Protocol.UploadState.Uploading)
{
CancelUploadTransfer(true);
}
if ((m_UploadState==Protocol.UploadState.Connecting)
|| (m_UploadState==Protocol.UploadState.WaitCallBack))
{
CancelUploadTransfer(false);
}
if ((m_DownloadState==Protocol.DownloadState.Connecting)
||(m_DownloadState==Protocol.DownloadState.WaitCallBack))
{
if ((m_ConexionTries<Protocol.ConnectionRetries)
&&(reason==(byte)Protocol.ConnectionReason.CannotConnect))
{
#if DEBUG
m_UserName=strReason;
#endif
Connect();
}
else
{
//quitar la fuente
m_ConexionTries=0;
m_DownloadState=Protocol.DownloadState.None;
if (DownFileHash!=null)
{
if (m_OtherDownFiles!=null)
{
m_OtherDownFiles.Clear();
}
m_OtherDownFiles=null;
if (m_DownloadElement==null)
{
m_DownloadElement=(CElement)CKernel.FilesList[DownFileHash];
}
if ((m_DownloadElement!=null)&&(m_DownloadElement.SourcesList!=null)) m_DownloadElement.SourcesList.RemoveSource(this);
}
else
{
Debug.WriteLine(m_UserName+"Never should enter here-> null DownFileHash");
}
#if DEBUG
m_UserName=strReason;
#endif
}
}
if (m_DownloadState==Protocol.DownloadState.Connected)
{
m_DownloadState=Protocol.DownloadState.None;
if (m_DownloadElement==null)
{
m_DownloadElement=(CElement)CKernel.FilesList[DownFileHash];
}
m_DownloadElement.SourcesList.RemoveSource(this);
}
//free all pending blocks
if (m_DownloadState==Protocol.DownloadState.Downloading)
{
//CLog.Log(Constants.Log.Verbose,"Transfer interrrupted,reason: {0}",strReason);
m_CleanDownloadBlocks();
m_LastDownloadRequest=DateTime.Now;
m_DownloadSpeeds.Clear();
m_DownloadSpeed=0;
m_QRDownload=0;
m_DownloadState=Protocol.DownloadState.OnQueue;
}
//for eny reason some clients (edonkeys mainly) have pending blocks but their downloadstate!=Downloading
if (m_DownloadBlocks.Count>0)
{
m_CleanDownloadBlocks();
// Debug.WriteLine(m_DownloadState.ToString());
// Debug.WriteLine("Disconnected leaving pending blocks!!!");
}
CKernel.ClientsList.IsClientNeeded(this);
}
public void AddOtherDownloadFile(string strDownloadFileHash)
{
if (m_OtherDownFiles==null)
{
m_OtherDownFiles=new StringCollection();
}
if (!m_OtherDownFiles.Contains(strDownloadFileHash))
{
m_OtherDownFiles.Add(strDownloadFileHash);
}
//if the alternative file has higher priority then swap
CElement newElement=CKernel.FilesList[CKernel.StringToHash(strDownloadFileHash)];
if (m_DownloadElement==null) m_DownloadElement=CKernel.FilesList[DownFileHash];
if ((newElement!=null)&&
(m_DownloadElement!=null)&&
((byte)m_DownloadElement.File.DownPriority<(byte)newElement.File.DownPriority)&&
((m_DownloadState==Protocol.DownloadState.OnQueue)||(m_DownloadState==Protocol.DownloadState.None)))
{
string previousDownloadHash=CKernel.HashToString(m_DownloadElement.File.FileHash);
m_DownloadElement.SourcesList.RemoveSource(this); //this will swap the source to the highest priority alternative file
//add the previous file to the alternative files
m_OtherDownFiles.Add(previousDownloadHash);
}
}
private bool m_CreateDataPackets()
{
CFileBlock sendBlock;
sendBlock=(CFileBlock)m_UploadBlocks[0];
byte[] Datos=null;
CElement element=(CElement)CKernel.FilesList[sendBlock.FileHash];
m_UploadElement=element;
if (CKernel.SameHash(ref m_UpFileHash,ref sendBlock.FileHash))
{
Buffer.BlockCopy(sendBlock.FileHash,0,m_UpFileHash,0,16);
}
if ((element!=null)&&(sendBlock.end-sendBlock.start<185000))
{
Datos=element.File.ReadBlock(sendBlock.start,sendBlock.end-1,false);
}
if ((Datos==null)||(element==null))
{
// cancel upload
Debug.Write("Part not found in file\n");
CancelUploadTransfer(false);
return false;
}
MemoryStream DatosStream=new MemoryStream(Datos);
//if you uncoment this upload compression will be enabled (not so tested)
//if (bEsMula)
//{
// CCompressedBlockSend EnvioBloque=new CCompressedBlockSend(Datos,sendBlock.inicio,sendBlock.fin,sendBlock.FileHash,ref m_UploadDataPackets);
//}
//else
//{
CSendBlock EnvioBloque=new CSendBlock(DatosStream,sendBlock.start,sendBlock.end,sendBlock.FileHash,ref m_UploadDataPackets);
//}
Datos=null;
m_UploadBlocks.Remove(sendBlock);
//GC.Collect();
return true;
}
public void ProcessFileRequest(byte[] packet)
{
#if VERBOSE
CKernel.LogClient.AddLog("ProcessFileRequest",m_ID);
#endif
CFileRequest fileRequest=new CFileRequest(new MemoryStream(packet));
if (fileRequest.FileHash==null)
return;
m_UpFileHash=fileRequest.FileHash;
byte[] tmp_UploadFileHash=fileRequest.FileHash;
m_UploadElement=(CElement)CKernel.FilesList[m_UpFileHash];
CElement tmpUploadElement=m_UploadElement;
if ((m_UploadElement==null)||(m_UploadElement.File.Empty))
{
/* Dont need to send no file found,we have sent it already in ProcessRequestFileID
* MemoryStream buffer=new MemoryStream();
* CNoFile noFile=new CNoFile(buffer,m_UpFileHash);
* m_UpFileHash=null;
* m_UploadElement=null;
* if (connection!=null) connection.SendPacket(buffer);
*/
}
else
{
#if VERBOSE
CKernel.LogClient.AddLog("ProcessFileRequest-send file info",m_ID);
#endif
m_UploadElement.Statistics.IncSessionRequests();
if ((fileRequest.Partes!=null)
&&(fileRequest.Partes.Length==m_UploadElement.File.NumChunks))
{
m_UpFileChunks=fileRequest.Partes;
}
MemoryStream fileInfoPacket=new MemoryStream();
CFileInfo fileInfo=new CFileInfo(m_UpFileHash,m_UploadElement.File.FileName,fileInfoPacket);
if (connection!=null)
{
connection.SendPacket(fileInfoPacket);
}
m_SendComment();
}
// it can be a new source for downloads
if ((tmpUploadElement!=null)
&&(tmpUploadElement.SourcesList!=null)
&&(!tmpUploadElement.File.Completed)
&&(tmpUploadElement.File.FileStatus==Protocol.FileState.Ready))
{
if (DownFileHash==null)
{
#if VERBOSE
CKernel.LogClient.AddLog("ProcessFileRequest-add client to downloads",m_ID);
#endif
DownFileHash=new byte[16];
Buffer.BlockCopy(tmpUploadElement.File.FileHash,0,DownFileHash,0,16);
m_DownloadElement=tmpUploadElement;
m_DownloadState=Protocol.DownloadState.Connected;
if (tmpUploadElement.SourcesList.AddSource(this))
{
TryDownload();
}
else
{
m_DownloadState=Protocol.DownloadState.None;
}
}
else
{
if (!CKernel.SameHash(ref DownFileHash,ref tmpUploadElement.File.FileHash))
AddOtherDownloadFile(CKernel.HashToString(tmp_UploadFileHash));
}
}
}
public CedonkeyComments(CElement in_Element)
{
Element=in_Element;
}
public void Clean()
{
m_Element=null;
while (m_ArrayList.Count>0)
{
CClient Client=(CClient)m_ArrayList[0];
RemoveSource(Client);
}
}
internal static void RemovedSharedFile(CElement element)
{
InterfaceFile file=InterfaceGateway[0].FileToInterfaceFile(element);
for (int i=0; i<=InterfaceGateway.Length-1; i++)
{
if (CKernel.InterfaceGateway[i]!=null)
{
InterfaceGateway[i].RemovedSharedFile(file);
}
}
}
private void m_StopFile(CElement Element)
{
if ((Element!=null)&& (Element.SourcesList!=null))
{
Element.SourcesList.Clean();
Element.SourcesList=null;
}
}
private bool m_LoadFilesFromFolder(string folder/*,bool refreshing*/)
{
if (!Directory.Exists(folder)) return false;
string [] ficheros=Directory.GetFiles(folder);
DateTime date;
string name;
if (m_EdonkeyHash==null) m_EdonkeyHash=new CHash();
foreach (string file in ficheros)
{
// 0 Kb file are ignored, avoid a crash
FileInfo filInfo = new FileInfo(file);
if ((filInfo.Length == 0)||
((filInfo.Attributes&(FileAttributes.Hidden|FileAttributes.System))!=0)) continue;
date=File.GetLastWriteTime(file).ToUniversalTime();
name=Path.GetFileName(file);
CKnownFileAttributes Atributos;
if ((Atributos=m_IsKnown(name,date))!=null)
{
//if (refreshing) continue;
if (!m_Contains(Atributos.FileHash))
{
CElement Element=new CElement();
Element.File=new CFile(Atributos.FileHash,Atributos.Date,folder,name,Atributos.Size, Atributos.Priority, Atributos.Permisions, Atributos.HashSet, Atributos.Comment, Atributos.Rating);
Element.SourcesList=null;
Element.Statistics=new CFileStatistics();
this.m_FileList.Add(Element);
CKernel.NewSharedFile(Element);
}
//if (!m_Contains(Atributos.FileHash))this.m_FileList.Add(Element);
}
else //new file
{
m_EdonkeyHash.AddFile(file);
}
}
return true;
}
private void InitializeClient(ushort in_Port,uint in_IP,uint in_ServerIP,ushort in_ServerPort,byte[] in_DownFileHash)
{
m_Port=in_Port;
m_strIP=in_IP.ToString();
m_ID=in_IP;
m_ServerIP=in_ServerIP;
m_ServerPort=in_ServerPort;
m_ClientFileName="";
m_LastDownloadRequest=DateTime.MinValue;
m_LastSourcesRequest=DateTime.MinValue;
m_SourceExchangeVersion=1;
m_DownloadTries=0;
m_Software=(byte)Protocol.Client.Unknown;
if (in_DownFileHash!=null)
{
DownFileHash=in_DownFileHash;
}
else
{
DownFileHash=null;
}
m_DownloadState=Protocol.DownloadState.None;
m_UploadState=Protocol.UploadState.None;
m_UploadBlocks=new ArrayList();
m_UploadDataPackets=new ArrayList();
m_DownloadBlocks=new ArrayList();
m_UploadElement=null;
m_ConexionTries=0;
#if DEBUG
IPAddress DirectionIP=new IPAddress(in_IP);
m_UserName=DirectionIP.ToString()+":"+Convert.ToString(m_Port);
#else
m_UserName="******";
#endif
m_DownloadSpeeds=new ArrayList();
m_UploadSpeeds=new ArrayList();
m_LastChunkRequested=-1;
m_SentComment=false;
m_AskingUDP=true;
m_SharedFilesRequested=false;
m_CallBackTime=DateTime.MinValue;
m_FriendLevel=Types.Constants.FriendLevel.NoFriend;
m_FirstMessage=true;
m_IsSpammer=false;
m_IsPartner=false;
m_PartnerAllowed=false;
m_SupportsPartner=false;
m_BadPartnerTime=DateTime.MinValue;
m_PartnerStartedTime=DateTime.MinValue;
}
public void ProcessRequestFileID(byte[] packet)
{
#if VERBOSE
CKernel.LogClient.AddLog("ProcessRequestFileID",m_ID);
#endif
CIDFileChange IDFileChange=new CIDFileChange(new MemoryStream(packet));
if (!CKernel.SameHash(ref m_UpFileHash,ref IDFileChange.FileHash))
{
m_UpFileHash=IDFileChange.FileHash;
m_UploadElement=(CElement)CKernel.FilesList[m_UpFileHash];
}
if ((m_UploadElement==null)||(m_UploadElement.File.Empty))
{
//Debug.Write("No se encontro fichero (Cambio ID) \n");
MemoryStream buffer=new MemoryStream();
CNoFile noFile=new CNoFile(buffer,m_UpFileHash);
m_UpFileHash=null;
if (connection!=null)
{
connection.SendPacket(buffer);
}
#if VERBOSE
CKernel.LogClient.AddLog("ProcessRequestFileID-No found",m_ID);
#endif
}
else
{
#if VERBOSE
CKernel.LogClient.AddLog("ProcessRequestFileID-send file status",m_ID);
#endif
MemoryStream packetState=new MemoryStream();
CFileStatus fileState;
if (m_UploadElement.File.Completed)
{
fileState=new CFileStatus(m_UpFileHash,null,packetState);
}
else
{
fileState=new CFileStatus(m_UpFileHash,m_UploadElement.File.ChunksStatus,packetState);
}
if (connection!=null)
{
connection.SendPacket(packetState);
}
}
}
private bool m_AllowSourceExchangeRequest()
{
long nextReask;
if ((!m_EmuleProtocol)||(DownFileHash==null)) return false;
if (m_DownloadElement==null) m_DownloadElement=CKernel.FilesList[DownFileHash];
if ((m_DownloadElement==null)||(m_DownloadElement.SourcesList==null)) return false;
if (DateTime.Now.Ticks-m_DownloadElement.Statistics.StartTime.Ticks<Protocol.StartUpPeriod)
nextReask = Protocol.ReaskSourceAtStartUp;
else
nextReask = Protocol.ReaskSource;
return ((DateTime.Now.Ticks-m_LastSourcesRequest.Ticks>Protocol.ReaskSameSource)
&& (DateTime.Now.Ticks-m_DownloadElement.SourcesList.GetLastSourceExchangeRequest().Ticks>nextReask)
&& (m_SourceExchangeVersion>=1)
&& (CKernel.Preferences.GetBool("UseEmuleProtocol"))
&& (CKernel.Preferences.GetInt("MaxSourcesPerFile")>m_DownloadElement.SourcesList.Count()-5));
}
public CClient(CConnection in_connection)
{
connection=in_connection;
m_UploadBlocks=new ArrayList();
m_UploadDataPackets=new ArrayList();
m_DownloadBlocks=new ArrayList();
m_DownloadState=Protocol.DownloadState.None;
m_UploadState=Protocol.UploadState.None;
m_UploadElement=null;
m_LastSourcesRequest=DateTime.MinValue;
m_DownloadTries=0;
m_ClientFileName="";
m_Software=(byte)Protocol.Client.Unknown;
m_DownloadSpeeds=new ArrayList();
m_UploadSpeeds=new ArrayList();
m_SentComment=false;
m_LastChunkRequested=-1;
m_AskingUDP=true;
m_SharedFilesRequested=false;
m_CallBackTime=DateTime.MinValue;
m_FriendLevel=Types.Constants.FriendLevel.NoFriend;
m_FirstMessage=true;
m_IsSpammer=false;
m_IsPartner=false;
m_PartnerAllowed=false;
m_SupportsPartner=false;
m_BadPartnerTime=DateTime.MinValue;
m_PartnerStartedTime=DateTime.MinValue;
}
private void m_SendRequestFile()
{
#if VERBOSE
CKernel.LogClient.AddLog("SendRequestFile",m_ID);
#endif
m_LastDownloadRequest=DateTime.Now;
m_DownloadTries++;
if (DownFileHash==null) return;
m_DownloadElement=(CElement)CKernel.FilesList[DownFileHash];
if (m_DownloadElement==null) return;
MemoryStream packet=new MemoryStream();
CFileRequest fileRequest;
if ((m_EmuleProtocol)&&(m_VersionExtendedRequest>0))
{
fileRequest=new CFileRequest(DownFileHash,m_DownloadElement.File.ChunksStatus,packet);
}
else
{
fileRequest=new CFileRequest(DownFileHash,null,packet);
}
// if (connection!=null)
// {
// connection.SendPacket(packet);
// }
//packet=new MemoryStream();
packet.Seek(0,SeekOrigin.End);
CIDFileChange IDFileChange=new CIDFileChange(DownFileHash,packet);
// if (connection!=null)
// {
// connection.SendPacket(packet);
// }
// ver si hay que pedir fuentes
if (m_AllowSourceExchangeRequest())
{
#if VERBOSE
CKernel.LogClient.AddLog("m_SendRequestFile-RequestSources",m_ID);
#endif
Debug.WriteLine(DateTime.Now.ToLongTimeString()+" : Requesting SourceExchange "+m_DownloadElement.File.FileName+" to "+ m_UserName+" | FileHash = "+ CKernel.HashToString(DownFileHash));
//MemoryStream sourcesPacket=new MemoryStream();
packet.Seek(0,SeekOrigin.End);
CRequestSourceExchange requestSourceExchange=new CRequestSourceExchange(packet,DownFileHash);
if (connection!=null)
{
m_LastSourcesRequest=DateTime.Now;
m_DownloadElement.SourcesList.SetLastSourceExchangeRequest();
//connection.SendPacket(sourcesPacket);
}
}
if (connection!=null)
{
connection.SendPacket(packet);
}
}
public void RemoveDownload()
{
#if VERBOSE
CKernel.LogClient.AddLog("RemoveDownload",m_ID);
#endif
if (m_DownloadState==Protocol.DownloadState.Downloading)
{
CancelDownloadTransfer(true);
}
CKernel.SourcesOld.AddClient(this);
// DownFileHash=null;
// m_DownFileChunks=null;
m_DownloadElement=null;
m_DownloadState=Protocol.DownloadState.None;
}
public void FileNotFound(byte[] packet)
{
// delete source
#if VERBOSE
CKernel.LogClient.AddLog("FileNotFound",m_ID);
#endif
m_ClientFileName=CKernel.Globalization["FILE_NOT_FOUND"];
Protocol.DownloadState prevState=m_DownloadState;
m_DownloadState=Protocol.DownloadState.None;
if (packet.Length!=16)
{
//raise exception
Exception e=new Exception("Invalid packet size");
throw(e);
}
if (!CKernel.SameHash(ref DownFileHash,ref packet))
{
DownFileHash=packet;
}
if ((DownFileHash!=null)&&(m_DownloadElement==null))
{
m_DownloadElement=(CElement)CKernel.FilesList[DownFileHash];
}
if ((m_DownloadElement!=null)&&(m_DownloadElement.SourcesList!=null))
{
if (prevState==Protocol.DownloadState.Downloading)
{
m_CleanDownloadBlocks();
m_LastDownloadRequest=DateTime.Now;
m_DownloadSpeeds.Clear();
m_DownloadSpeed=0;
m_QRDownload=0;
}
m_DownloadElement.SourcesList.RemoveSource(this);
}
}
public void RequestBlocks()
{
#if VERBOSE
CKernel.LogClient.AddLog("RequestBlocks,download blocks.count:"+Convert.ToString(m_DownloadBlocks.Count),m_ID);
#endif
if (m_DownloadElement==null)
{
if (DownFileHash!=null)
{
m_DownloadElement=(CElement)CKernel.FilesList[DownFileHash];
if ((m_DownloadElement!=null)&&(m_DownloadElement.SourcesList!=null))
{
m_DownloadElement.SourcesList.AddSource(this);
}
else
{
// probablemente el fichero ya se ha completado
return;
}
}
else
{
return;
}
}
m_DownloadState=Protocol.DownloadState.Downloading;
//CElement Element=(CElement)CKernel.FilesList[CKernel.HashToString(DownFileHash)];
uint start=0;
uint end=0;
int chunk=0;
CFileBlock[] blocks=new CFileBlock[3];
for (uint i=0; i!=3; i++)
{
blocks[i]=new CFileBlock();
//Debug.Write("LastChunk:"+m_LastChunkRequested.ToString());
chunk=m_DownloadElement.SourcesList.SelectChunk(m_DownFileChunks,m_LastChunkRequested);
m_LastChunkRequested=chunk;
//Debug.WriteLine("NewChunk:"+m_LastChunkRequested.ToString());
if (chunk>=0)
{
if (m_DownloadElement.File.GetNewBlockInChunk((uint)chunk,ref start,ref end))
{
blocks[i].start=start;
blocks[i].end=end;
blocks[i].FileHash=DownFileHash;
blocks[i].position=start;
//blocks[i].buffer=new Byte[fin+1-inicio];
m_DownloadBlocks.Add(blocks[i]);
if ((end==0)&&(start==0))
{
Debug.WriteLine("no more blocks to request "+Convert.ToString(chunk));
}
else
{
//Debug.WriteLine(m_UserName+", ChunksStatus = "+Convert.ToString(m_DownloadElement.File.ChunksStatus[0])/*+Convert.ToString(m_DownloadElement.File.GetChunksStatus()[1])*/);
#if VERBOSE
CKernel.LogClient.AddLog("RequestBlocks-chunk requested "+Convert.ToString(chunk)+" block: "+Convert.ToString(start)+"-"+Convert.ToString(end)+"\n",m_ID);
#endif
}
}
}
}
if ((blocks[0].start==0)&&(blocks[0].end==0))
{
#if VERBOSE
CKernel.LogClient.AddLog("RequestBlocks-first block is null,no request blocks",m_ID);
#endif
#if DEBUG
Debug.WriteLine(m_UserName+" Parte: "+Convert.ToString(chunk)+" first block is null,no request blocks");
for (int j=0; j<m_DownloadElement.File.ChunksStatus.Length; j++)
{
if (((m_DownloadElement.File.ChunksStatus[j]==(byte)Protocol.ChunkState.Empty)||
(m_DownloadElement.File.ChunksStatus[j]==(byte)Protocol.ChunkState.InProgress))&&
(m_DownFileChunks[j]==(byte)Protocol.ChunkState.Complete))
Debug.WriteLine("Chunk not selected when available");
}
#endif
if (m_DownloadBlocks.Count==0)
{
//no needed new blocks to download and nothing pending for receiving
bool willBeChangedToOtherFile=((m_OtherDownFiles!=null)&&(m_OtherDownFiles.Count>0));
CancelDownloadTransfer(false);
if (!willBeChangedToOtherFile)
{
m_DownloadState=Protocol.DownloadState.NoNeededParts;
}
}
}
else
{
MemoryStream packet=new MemoryStream();
CFileBlockRequest fileBlockRequest=new CFileBlockRequest(packet,DownFileHash,ref blocks[0],ref blocks[1],ref blocks[2]);
if (connection!=null)
{
connection.SendPacket(packet);
}
}
}
public void ProcessChunksStatus(MemoryStream packet, bool udpConnection)
{
#if VERBOSE
CKernel.LogClient.AddLog("ProcessChunksStatus",m_ID);
#endif
if ((DownFileHash==null)||(m_DownloadElement==null)) return;
CFileStatus fileStatus=new CFileStatus(packet,!udpConnection);
if ((!udpConnection)&&(!CKernel.SameHash(ref DownFileHash,ref fileStatus.FileHash)))
{
Exception e=new Exception("Chunks status: invalid fileHash");
throw(e);
}
if (!CKernel.SameHash(ref DownFileHash,ref m_DownloadElement.File.FileHash))
{
m_DownloadElement=CKernel.FilesList[DownFileHash];
}
if ((CHash.GetChunksCount(m_DownloadElement.File.FileSize)!=fileStatus.nChunks)
&& (fileStatus.nChunks!=0))
{
Debug.Write("Received chunks numer does not match with file chunks numer\n");
m_DownFileChunks=null;
}
if (m_DownloadElement.SourcesList!=null) m_DownloadElement.SourcesList.RemoveChunksAvaibility(m_DownFileChunks);
uint nChunks=CHash.GetChunksCount(m_DownloadElement.File.FileSize);
if (fileStatus.Chunks==null)
{
if ((m_DownFileChunks==null)||(m_DownFileChunks.Length!=nChunks))
{
m_DownFileChunks=new byte[nChunks];
}
for (int i=0; i!=m_DownFileChunks.Length; i++)
{
m_DownFileChunks[i]=(byte)Protocol.ChunkState.Complete;
}
//TODO hay alguna función para hacer esto en .NET equivalente a memset?
}
else
{
if ((m_DownFileChunks==null)||(m_DownFileChunks.Length!=nChunks))
{
m_DownFileChunks=new byte[nChunks];
}
Buffer.BlockCopy(fileStatus.Chunks,0,m_DownFileChunks,0,fileStatus.Chunks.Length);
}
if (fileStatus.nChunks>0)
{
m_DownloadState=Protocol.DownloadState.NoNeededParts;
for (int i=0; i!=m_DownFileChunks.Length; i++)
{
if (((Protocol.ChunkState)m_DownFileChunks[i]==Protocol.ChunkState.Complete)
&&((m_DownloadElement.File.ChunksStatus.Length==0)
||((Protocol.ChunkState)m_DownloadElement.File.ChunksStatus[i]!=Protocol.ChunkState.Complete)))
{
m_DownloadState=Protocol.DownloadState.OnQueue;
break;
}
}
}
else
{
m_DownloadState=Protocol.DownloadState.OnQueue;
}
//m_DownloadElement.SourcesList.UpdateChunksAvaibility();
if (m_DownloadElement.SourcesList!=null) m_DownloadElement.SourcesList.AddChunksAvaibility(m_DownFileChunks);
if (udpConnection) return;
packet.Close();
packet=null;
// ver si necesitamos el hashset del fichero(si no lo tenemos aun lo pedimos)
// CElement Element=(CElement)CKernel.FilesList[CKernel.HashToString(DownFileHash)];
// TODO no es necesario pedir hashSets de ficheros de una única parte
if ((m_DownloadElement.File.HashSetNeeded())&&(m_DownloadState!=Protocol.DownloadState.NoNeededParts))
{
#if VERBOSE
CKernel.LogClient.AddLog("ProcesarInformacionPartesFichero-Pide HashSet",m_ID);
#endif
m_DownloadState=Protocol.DownloadState.ReqestHashSet;
MemoryStream responsePacket=new MemoryStream();
CHashSetRequest hashSet=new CHashSetRequest(DownFileHash,responsePacket);
if (connection!=null)
{
connection.SendPacket(responsePacket);
}
}
else
{
if (m_DownloadState!=Protocol.DownloadState.NoNeededParts)
{
#if VERBOSE
CKernel.LogClient.AddLog("ProcesarInformacionPartesFichero-Envía IniciarDescarga",m_ID);
#endif
MemoryStream responsePacket=new MemoryStream();
CStartDownload startDonwload=new CStartDownload(responsePacket,DownFileHash);
if (connection!=null)
{
connection.SendPacket(responsePacket);
}
}
}
}
public void SwapToHigherPriorityFile()
{
if ((m_OtherDownFiles==null)||
(m_OtherDownFiles.Count==0)||
(DownFileHash==null)||
(m_DownloadState!=Protocol.DownloadState.OnQueue)&&(m_DownloadState!=Protocol.DownloadState.None))
{
return;
}
if (m_DownloadElement==null) m_DownloadElement=CKernel.FilesList[DownFileHash];
if (m_DownloadElement==null) return;
bool swapNeeded=false;
foreach (string strFileHash in m_OtherDownFiles)
{
CElement newElement=CKernel.FilesList[CKernel.StringToHash(strFileHash)];
if ((newElement!=null)&&
((byte)m_DownloadElement.File.DownPriority<(byte)newElement.File.DownPriority))
{
swapNeeded=true;
break;
}
}
if (!swapNeeded) return;
//Debug.Write("Swapping "+this.UserName+m_DownloadElement.File.FileName);
string previousDownloadHash=CKernel.HashToString(DownFileHash);
m_DownloadElement.SourcesList.RemoveSource(this); //this will swap the source to the highest priority alternative file
//add the previous file to the alternative files
m_OtherDownFiles.Add(previousDownloadHash);
//Debug.WriteLine(" to "+ m_DownloadElement.File.FileName);
}
/// <summary>
/// Publish one new shared file (only one)
/// </summary>
public void PublishSharedFile(CElement Element)
{
MemoryStream buffer=new MemoryStream();
CServerPublishFiles ServerPublishFiles=new CServerPublishFiles(buffer, Element);
//if server supports compression we send it compressed
if (SupportCompression)
{
CCompressedPacket CompressedPacket=new CCompressedPacket(ref buffer);
}
if (m_ServerConnection!=null) m_ServerConnection.SendPacket(buffer);
}
public void AddFile(string name, uint size, byte[] Hash, stDatosFuente[] sources)
{
CElement Element;
if (this.m_Contains(Hash))
{
CLog.Log(Constants.Log.Notify,"FIL_DUP",name);
Element=(CElement)this[Hash];
}
else
{
CFile file=new CFile(Hash,name,size);
Element=new CElement();
Element.File=file;
Element.Statistics=new CFileStatistics();
m_FileList.Add(Element);
CKernel.NewFile(Element);
CLog.Log(Constants.Log.Notify,"FIL_ADDED",name);
}
if ((Element.SourcesList==null)&&((Element.File.FileStatus==Protocol.FileState.Ready)||(Element.File.FileStatus==Protocol.FileState.Completing)))
{
CSourcesList sourcesList=new CSourcesList(Element);
Element.SourcesList=sourcesList;
if (CKernel.ServersList.ActiveServer!=null) CKernel.ServersList.ActiveServer.RequestSources(Element.File.FileHash);
}
if ((Element.SourcesList!=null)&&
((Element.File.FileStatus==Protocol.FileState.Ready)||(Element.File.FileStatus==Protocol.FileState.Completing))&&
(sources!=null))
CKernel.ClientsList.AddClientsToFile(sources,Hash);
}
