public void Find()
{
List <searchFiles> sFiles = new List <searchFiles>();
foreach (var f in fileMissingGroupsSHA1Sorted)
{
if (f.Files.Count == 0)
{
continue;
}
string filename = "ToSort\\" + BitConverter.ToString(f.SHA1).Replace("-", "") + ".zip";
Debug.WriteLine(filename);
if (File.Exists(filename))
{
continue;
}
if ((f.Size ?? 0) == 0)// || f.Size > 1024 * 1024 * 128)
{
continue;
}
searchFiles sFile = new searchFiles()
{
name = f.Files[0].DatTreeFullName,
Size = (ulong)f.Size,
CRC = f.CRC,
SHA1 = f.SHA1,
MD5 = f.MD5
};
sFiles.Add(sFile);
}
foreach (var f in sFiles)
{
FindSHA1(f);
if (f.found)
{
fetch(f);
}
if (_thWrk.CancellationPending)
{
return;
}
}
}
public void fetch(searchFiles f)
{
FileShareUiComm fs = new FileShareUiComm
{
username = name,
session = session,
filename = f.name,
size = f.Size,
crc = f.CRC,
sha1 = f.SHA1,
md5 = f.MD5,
compressedSize = f.compressedSize,
offset = 0,
blockLength = 0
};
fs.command = 3;
comBits cb = 0;
if (f.CRC != null)
{
cb |= comBits.cCRC;
}
if (f.SHA1 != null)
{
cb |= comBits.cSHA1;
}
if (f.MD5 != null)
{
cb |= comBits.cMD5;
}
ulong fileSize = f.compressedSize;
// now try and get the file
string filenameTmp = "ToSort\\__FCDownload.tmp";
string filename = "ToSort\\" + BitConverter.ToString(f.SHA1).Replace("-", "") + ".zip";
string filenameBin = BitConverter.ToString(f.SHA1).Replace("-", "") + ".bin";
uint blockMaxSize = 4096 * 4096;
Zip zFile = new Zip();
zFile.ZipFileCreate(filenameTmp);
zFile.ZipFileOpenWriteStream(true, false, filenameBin, f.Size, 8, out Stream stream);
List <byte> list = new List <byte>();
byte[] bReply = null;
ulong offset = 0;
while (fileSize > 0)
{
uint partNow = fileSize > blockMaxSize ? blockMaxSize : (uint)fileSize;
Debug.WriteLine($"Index {offset} : Block {partNow} : Total {f.compressedSize} / {f.Size}");
fs.command = 3;
fs.offset = offset;
fs.blockLength = (ulong)partNow;
int FetchCount = 0;
bool res = false;
while (!res && FetchCount < 4)
{
list.Clear();
list.Add(0); list.Add(3);
list.AddRange(name);
list.AddRange(session);
list.AddRange(BitConverter.GetBytes(f.Size));
list.Add((byte)cb);
if (f.CRC != null)
{
list.AddRange(f.CRC);
}
if (f.SHA1 != null)
{
list.AddRange(f.SHA1);
}
if (f.MD5 != null)
{
list.AddRange(f.MD5);
}
list.AddRange(BitConverter.GetBytes(offset));
list.AddRange(BitConverter.GetBytes(partNow));
fs.message = "Receiving";
_thWrk?.Report(fs);
res = NetClient.SendToServer(list.ToArray(), ip, port, out bReply);
FetchCount++;
}
if (FetchCount >= 4)
{
fs.message = "Server Lost";
_thWrk?.Report(fs);
zFile.ZipFileCloseFailed();
zFile.ZipFileClose();
File.Delete(filenameTmp);
return;
}
if (bReply[0] != 0 || bReply[1] != 3)
{
fs.message = "Error Back command";
_thWrk?.Report(fs);
zFile.ZipFileCloseFailed();
zFile.ZipFileClose();
File.Delete(filenameTmp);
return;
}
if (bReply[2] != 1)
{
fs.message = "Find now not found";
_thWrk?.Report(fs);
zFile.ZipFileCloseFailed();
zFile.ZipFileClose();
File.Delete(filenameTmp);
return;
}
int partSize = BitConverter.ToInt32(bReply, 3);
if (partSize != partNow)
{
fs.message = "Receive Size Error";
_thWrk?.Report(fs);
zFile.ZipFileCloseFailed();
zFile.ZipFileClose();
File.Delete(filenameTmp);
return;
}
stream.Write(bReply, 7, partSize);
offset += partNow;
fileSize -= partNow;
}
zFile.ZipFileCloseWriteStream(f.CRC);
zFile.ZipFileClose();
File.Move(filenameTmp, filename);
}
public bool FindSHA1(searchFiles f)
{
f.found = false;
FileShareUiComm fs = new FileShareUiComm
{
username = name,
session = session,
filename = f.name,
size = f.Size,
crc = f.CRC,
sha1 = f.SHA1,
md5 = f.MD5,
offset = 0,
blockLength = 0
};
fs.command = 2;
comBits cb = 0;
if (f.CRC != null)
{
cb |= comBits.cCRC;
}
if (f.SHA1 != null)
{
cb |= comBits.cSHA1;
}
if (f.MD5 != null)
{
cb |= comBits.cMD5;
}
List <byte> list = new List <byte>();
list.Add(0); list.Add(2);
list.AddRange(name);
list.AddRange(session);
list.AddRange(BitConverter.GetBytes(f.Size));
list.Add((byte)cb);
if (f.CRC != null)
{
list.AddRange(f.CRC);
}
if (f.SHA1 != null)
{
list.AddRange(f.SHA1);
}
if (f.MD5 != null)
{
list.AddRange(f.MD5);
}
NetClient.SendToServer(list.ToArray(), ip, port, out byte[] bReply);
if (bReply == null)
{
fs.message = "Server Lost";
_thWrk?.Report(fs);
return(false);
}
if (bReply[0] != 0 || bReply[1] != 2)
{
// textBox2.Text = "Incorrect Command reply";
return(false);
}
if (bReply[2] != 1)
{
fs.message = "Not Found";
_thWrk?.Report(fs);
return(false);
}
f.compressedSize = BitConverter.ToUInt64(bReply, 3);
byte[] fCRC = bReply.Copy(11, 4);
if (!ArrByte.ECompare(f.CRC, fCRC))
{
return(false);
}
if (f.CRC == null)
{
f.CRC = fCRC;
}
f.found = true;
return(true);
}