public bool FindExactMatch(RvFile file)
{
if (!Equal(file.Size, Size))
{
return(false);
}
if (!ArrByte.ECompare(file.CRC, CRC))
{
return(false);
}
if (!ArrByte.ECompare(file.SHA1, SHA1))
{
return(false);
}
if (!ArrByte.ECompare(file.MD5, MD5))
{
return(false);
}
// should check header file type also.
if (!Equal(file.AltSize, AltSize))
{
return(false);
}
if (!ArrByte.ECompare(file.AltCRC, AltCRC))
{
return(false);
}
if (!ArrByte.ECompare(file.AltSHA1, AltSHA1))
{
return(false);
}
if (!ArrByte.ECompare(file.AltMD5, AltMD5))
{
return(false);
}
return(true);
}
private bool FindAltExactMatch(RvFile file)
{
// should check header file type also.
if (!Equal(file.AltSize, Size))
{
return(false);
}
if (!ArrByte.ECompare(file.AltCRC, CRC))
{
return(false);
}
if (!ArrByte.ECompare(file.AltSHA1, SHA1))
{
return(false);
}
if (!ArrByte.ECompare(file.AltMD5, MD5))
{
return(false);
}
return(true);
}
private byte[] ReceivedData(string ip, byte[] buffer)
{
FileShareUiComm fs;
if (buffer == null)
{
return(null);
}
_thWrk.Report($"Received {ip} data -> {BitConverter.ToString(buffer)}");
if (buffer.Length < 2)
{
// return an error command reply
return(new byte[] { 0, 0 });
}
int bOffset = 0;
int command = (buffer[bOffset++] << 8) + buffer[bOffset++];
byte[] name = buffer.Copy(bOffset, 10); bOffset += 10;
byte[] session = buffer.Copy(bOffset, 16); bOffset += 16;
switch (command)
{
// 00 - 2 Command 1 (0,1)
// 02 - 10 Name
// 12 - 16 Session Guid
case 1:
// 00 - 2 Command 1 (0,1)
// 02 - 1 01
fs = new FileShareUiComm
{
command = 1,
username = name,
session = session,
message = "Hello"
};
_thWrk?.Report(fs);
return(new byte[] { 0, 1, 1 });
// 00 - 2 Command 2 (0, 2)
// 02 - 10 Name
// 12 - 16 Session Guid
// 28 - 8 Size
case 2:
// 00 - 2 Command 2 (0, 2)
// 02 - 1 File Not Found = 0
// 00 - 2 Command 2 (0, 2)
// 02 - 1 File Found = 1
// 3 - 8 File Compressed Size
// 11 - 4 File CRC
{
RvFile testFile = new RvFile(FileType.ZipFile);
testFile.Size = BitConverter.ToUInt64(buffer, bOffset); bOffset += 8;
comBits cb = (comBits)buffer[bOffset++];
if ((cb & comBits.cCRC) != 0)
{
testFile.CRC = buffer.Copy(bOffset, 4); bOffset += 4;
}
if ((cb & comBits.cSHA1) != 0)
{
testFile.SHA1 = buffer.Copy(bOffset, 20); bOffset += 20;
}
if ((cb & comBits.cMD5) != 0)
{
testFile.MD5 = buffer.Copy(bOffset, 16); bOffset += 16;
}
bool found = FindFixes.FindMatch(fileGroupsSHA1Sorted, testFile, CompareSHA1, FileGroup.FindExactMatch, out List <int> listIndex);
if (!found)
{
fs = new FileShareUiComm
{
command = 2,
username = name,
session = session,
sha1 = testFile.SHA1,
message = "SHA1 not found"
};
_thWrk?.Report(fs);
return(new byte[] { 0, 2, 0 });
}
FileGroup fgMatch = fileGroupsSHA1Sorted[listIndex[0]];
if (testFile.Size != fgMatch.Size)
{
fs = new FileShareUiComm
{
command = 2,
username = name,
session = session,
sha1 = testFile.SHA1,
message = "SHA1,Size not found"
};
_thWrk?.Report(fs);
return(new byte[] { 0, 2, 0 });
}
if (!ArrByte.ECompare(testFile.CRC, fgMatch.CRC))
{
fs = new FileShareUiComm
{
command = 2,
username = name,
session = session,
sha1 = testFile.SHA1,
message = "SHA1,CRC not found"
};
_thWrk?.Report(fs);
return(new byte[] { 0, 2, 0 });
}
if (!ArrByte.ECompare(testFile.MD5, fgMatch.MD5))
{
fs = new FileShareUiComm
{
command = 2,
username = name,
session = session,
sha1 = testFile.SHA1,
message = "SHA1,MD5 not found"
};
_thWrk?.Report(fs);
return(new byte[] { 0, 2, 0 });
}
foreach (RvFile fMatch in fgMatch.Files)
{
Zip zFile = new Zip();
zFile.ZipFileOpen(fMatch.Parent.FullNameCase, fMatch.Parent.FileModTimeStamp, false);
zFile.ZipFileOpenReadStreamQuick((ulong)fMatch.ZipFileHeaderPosition, true, out Stream stream, out ulong streamSize, out ushort compressionMethod);
if (compressionMethod != 8)
{
zFile.ZipFileCloseReadStream();
zFile.ZipFileClose();
continue;
}
List <byte> ret = new List <byte>();
ret.AddRange(new byte[] { 0, 2, 1 });
ret.AddRange(BitConverter.GetBytes((ulong)streamSize));
ret.AddRange(fMatch.CRC);
fs = new FileShareUiComm
{
command = 2,
username = name,
session = session,
sha1 = testFile.SHA1,
message = "Found File",
filename = fMatch.Parent.FullName,
zippedFilename = fMatch.Name,
compressedSize = streamSize
};
_thWrk?.Report(fs);
zFile.ZipFileCloseReadStream();
zFile.ZipFileClose();
return(ret.ToArray());
}
fs = new FileShareUiComm
{
command = 2,
username = name,
session = session,
sha1 = testFile.SHA1,
message = "No Zipped version found."
};
_thWrk?.Report(fs);
return(new byte[] { 0, 2, 0 });
}
// 00 - 2 Command 3 (0, 3)
// 02 - 10 Name
// 12 - 16 Session Guid
// 28 - 20 SHA1
// 48 - 8 Size
// 56 - 8 long file offset block
// 64 - 4 block length to read
case 3:
// 00 - 2 Command 2 (0, 3)
// 02 - 1 File Not Found = 0
// 00 - 2 Command 2 (0, 3)
// 02 - 1 File Found = 1
// 03 - 4: Block read length
// 07 - X: Data
{
RvFile testFile = new RvFile(FileType.ZipFile);
testFile.Size = BitConverter.ToUInt64(buffer, bOffset); bOffset += 8;
comBits cb = (comBits)buffer[bOffset++];
if ((cb & comBits.cCRC) != 0)
{
testFile.CRC = buffer.Copy(bOffset, 4); bOffset += 4;
}
if ((cb & comBits.cSHA1) != 0)
{
testFile.SHA1 = buffer.Copy(bOffset, 20); bOffset += 20;
}
if ((cb & comBits.cMD5) != 0)
{
testFile.MD5 = buffer.Copy(bOffset, 16); bOffset += 16;
}
ulong offset = BitConverter.ToUInt64(buffer, bOffset); bOffset += 8;
uint length = BitConverter.ToUInt32(buffer, bOffset); bOffset += 4;
bool found = FindFixes.FindMatch(fileGroupsSHA1Sorted, testFile, CompareSHA1, FileGroup.FindExactMatch, out List <int> listIndex);
if (!found)
{
fs = new FileShareUiComm
{
command = 3,
username = name,
session = session,
sha1 = testFile.SHA1,
message = "SHA1 not found"
};
_thWrk?.Report(fs);
return(new byte[] { 0, 3, 0 });
}
FileGroup fgMatch = fileGroupsSHA1Sorted[listIndex[0]];
if (testFile.Size != fgMatch.Size)
{
fs = new FileShareUiComm
{
command = 3,
username = name,
session = session,
sha1 = testFile.SHA1,
message = "SHA1,Size not found"
};
_thWrk?.Report(fs);
return(new byte[] { 0, 3, 0 });
}
if (!ArrByte.ECompare(testFile.CRC, fgMatch.CRC))
{
fs = new FileShareUiComm
{
command = 3,
username = name,
session = session,
sha1 = testFile.SHA1,
message = "SHA1,CRC not found"
};
_thWrk?.Report(fs);
return(new byte[] { 0, 3, 0 });
}
if (!ArrByte.ECompare(testFile.MD5, fgMatch.MD5))
{
fs = new FileShareUiComm
{
command = 3,
username = name,
session = session,
sha1 = testFile.SHA1,
message = "SHA1,MD5 not found"
};
_thWrk?.Report(fs);
return(new byte[] { 0, 3, 0 });
}
foreach (RvFile fMatch in fgMatch.Files)
{
Zip zFile = new Zip();
zFile.ZipFileOpen(fMatch.Parent.FullNameCase, fMatch.Parent.FileModTimeStamp, false);
zFile.ZipFileOpenReadStreamQuick((ulong)fMatch.ZipFileHeaderPosition, true, out Stream stream, out ulong streamSize, out ushort compressionMethod);
if (compressionMethod != 8)
{
zFile.ZipFileCloseReadStream();
zFile.ZipFileClose();
continue;
}
List <byte> ret = new List <byte>();
ret.AddRange(new byte[] { 0, 3, 1 });
stream.Seek((long)offset, SeekOrigin.Current);
byte[] data = new byte[length];
int readLength = stream.Read(data, 0, (int)length);
ret.AddRange(BitConverter.GetBytes(readLength));
ret.AddRange(data);
fs = new FileShareUiComm
{
command = 2,
username = name,
session = session,
filename = fMatch.Name,
sha1 = testFile.SHA1,
message = "Sending",
zippedFilename = fMatch.Parent.FullName,
compressedSize = streamSize,
offset = offset,
blockLength = length
};
_thWrk?.Report(fs);
zFile.ZipFileCloseReadStream();
zFile.ZipFileClose();
return(ret.ToArray());
}
return(new byte[] { 0, 2, 0 });
}
default:
return(new byte[] { 0, 0 });
}
}
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);
}