public override void Convert(BlowfishNET.BlowfishECB ECB, AlgorithmType newalgorithm)
{
ecb = ECB;
oldalgorithm = algorithm;
algorithm = newalgorithm;
if (compressedmem == null)
{
LoadAndCompress();
}
if (oldalgorithm == algorithm || compressedsize < BlowfishNET.BlowfishECB.BLOCK_SIZE)
{
return;
}
int encryptlen = (int)compressedsize;
if (encryptlen % BlowfishNET.BlowfishECB.BLOCK_SIZE != 0)
{
encryptlen -= encryptlen % BlowfishNET.BlowfishECB.BLOCK_SIZE;
}
byte [] tmp = (byte [])compressedmem.GetBuffer().Clone();
if (algorithm == AlgorithmType.infilateandblowfish)
{
ecb.Encrypt(tmp, 0, compressedmem.GetBuffer(), 0, encryptlen);
}
else
{
ecb.Decrypt(tmp, 0, compressedmem.GetBuffer(), 0, encryptlen);
}
adler32 = AdlerCheckSum.GetAdler32(compressedmem, 0, (int)compressedmem.Length);
}
public override void Convert(BlowfishNET.BlowfishECB ECB, AlgorithmType newalgorithm)
{
ecb = ECB;
algorithm = newalgorithm;
if (oldalgorithm == algorithm || compressedsize < BlowfishNET.BlowfishECB.BLOCK_SIZE)
{
compressedmem = null;
return;
}
int encryptlen = (int)compressedsize;
compressedmem = new System.IO.MemoryStream();
System.IO.FileStream filestream = new System.IO.FileStream(filename, System.IO.FileMode.Open, System.IO.FileAccess.Read);
filestream.Position = offset;
byte[] data = new byte[encryptlen];
filestream.Read(data, 0, encryptlen);
byte[] tmp = (byte[])data.Clone();
if (encryptlen % BlowfishNET.BlowfishECB.BLOCK_SIZE != 0)
{
encryptlen -= encryptlen % BlowfishNET.BlowfishECB.BLOCK_SIZE;
}
if (algorithm == AlgorithmType.infilateandblowfish)
{
ecb.Encrypt(tmp, 0, data, 0, encryptlen);
}
else
{
ecb.Decrypt(tmp, 0, data, 0, encryptlen);
}
compressedmem.Write(data, 0, (int)compressedsize);
adler32 = AdlerCheckSum.GetAdler32(compressedmem, 0, (int)compressedmem.Length);
filestream.Close();
}
public bool Open(string filename)
{
System.IO.FileStream stream = new System.IO.FileStream(filename, System.IO.FileMode.Open, System.IO.FileAccess.Read);
System.IO.BinaryReader reader = new System.IO.BinaryReader(stream);
bool re = true;
try
{
byte[] magicbyte = reader.ReadBytes(52);
string magicstring = System.Text.ASCIIEncoding.ASCII.GetString(magicbyte).Trim('\0');
uint size = reader.ReadUInt32();
bool compressed = true;
if (reader.ReadUInt32() == 0)
{
compressed = false;
}
switch (magicstring)
{
case "KOG GC TEAM MASSFILE V.0.3.":
komtype = EKomType.newkom;
filetime = reader.ReadUInt32();
adler32 = reader.ReadUInt32();
header_size = reader.ReadUInt32();
System.Xml.XmlDocument headerxml = new System.Xml.XmlDocument();
byte[] header_raw = reader.ReadBytes((int)header_size);
if (header_raw[0] != '<' ||
header_raw[1] != '?' ||
header_raw[2] != 'x' ||
header_raw[3] != 'm' ||
header_raw[4] != 'l')
{
if (ecb == null)
{
throw new EncryptedKomException();
}
byte[] data = (byte[])header_raw.Clone();
ecb.Decrypt(data, 0, header_raw, 0, (int)header_size);
komtype = EKomType.encrypt;
}
string xmlstring = System.Text.ASCIIEncoding.ASCII.GetString(header_raw);
headerxml.LoadXml(xmlstring);
System.Xml.XmlNodeList files = headerxml.SelectNodes("Files/File");
UInt32 offset = OffsetStart + header_size;
foreach (System.Xml.XmlElement file in files)
{
string key = file.GetAttribute("Name");
Kom2SubFile subfile = Kom2SubFile.ReadSubFileFromKom(ecb, filename, file, offset);
offset += subfile.CompressedSize;
subfiles.Add(key, subfile);
}
break;
case "KOG GC TEAM MASSFILE V.0.1.":
case "KOG GC TEAM MASSFILE V.0.2.":
komtype = EKomType.oldkom;
for (int i = 0; i < size; i++)
{
string key = System.Text.ASCIIEncoding.ASCII.GetString(reader.ReadBytes(60)).Trim('\0');
Kom2SubFile subfile = Kom2SubFile.ReadSubFileFromOldKom(filename, reader, 60 + size * 72);
if (key != "crc.xml")
{
subfiles.Add(key, subfile);
}
}
break;
default:
re = false;
break;
}
}
catch (System.Exception ex)
{
komtype = EKomType.notkom;
re = false;
}
stream.Close();
return(re);
}