public void LoadFile(string path,long ncchoffset)
{
FileStream fs = File.OpenRead(path);
fs.Position = ncchoffset;
if (fs.Position >= fs.Length - Marshal.SizeOf(typeof(NCCHHeader)) + 0x100)
{
PrintErrorMessage("Invalid file");
return;
}
CXI = new NCCH(fs);
long ExefsSize = CaculateMediaUnite(CXI.Header.ExeFSLength);
byte[] ExheaderRaw = new byte[0x800];
byte[] ExeFSRaw = new byte[ExefsSize];
fs.Read(ExheaderRaw, 0, ExheaderRaw.Length);
fs.Position = NcchOffset + CaculateMediaUnite(CXI.Header.ExeFSOffset);
fs.Read(ExeFSRaw, 0, ExeFSRaw.Length);
using (MemoryStream exhstream = new MemoryStream(ExheaderRaw))
{
switch (CXI.Header.Flags[7])
{
case 0:
case 0x20:
{
if (!CB_Advance.Checked)
throw new Exception("Use Advance Options to decrypt this file.");
if (string.IsNullOrEmpty(TB_Xor.Text))
return;
string exhxor = GetXorFilePath("exheader");
using (FileStream xorfs = File.OpenRead(exhxor))
{
using (MemoryStream decstream = new MemoryStream())
{
Xorer.TramsfoemStream(decstream, exhstream, xorfs, 0, exhstream.Length);
decstream.Position = 0;
CXI.ExHeader = StructReader.ReadStruct<NCCHExtendedHeader>(decstream);
CXI.AccessControlExtend = StructReader.ReadStruct<NCCHAccessControlExtend>(decstream);
}
}
string exefsnorm = GetXorFilePath("exefs_norm");
using (FileStream xorfs = File.OpenRead(exefsnorm))
{
using (MemoryStream decstream = new MemoryStream())
{
Xorer.TramsfoemStream(decstream, new MemoryStream(ExeFSRaw), xorfs, 0, ExefsSize);
decstream.Position = 0;
ExeFs = new ExeFS(decstream);
if (CXI.Header.Flags[3] == 1)
{
decstream.Position = 0;
xorfs.Position = 0;
Xorer.TramsfoemStream(decstream, new MemoryStream(ExeFSRaw), xorfs, 0, Marshal.SizeOf(typeof(ExeFSHeader)));
using (FileStream xor7xfs = File.OpenRead(GetXorFilePath("exefs_7x")))
{
Xorer.TramsfoemStream(decstream, new MemoryStream(ExeFSRaw), xor7xfs, Marshal.SizeOf(typeof(ExeFSHeader)), ExeFs.Header.HeaderEntries[0].size);
}
xorfs.Position = 0;
long TopLength = Marshal.SizeOf(typeof(ExeFSHeader)) + ExeFs.Header.HeaderEntries[0].size;
Xorer.TramsfoemStream(decstream, new MemoryStream(ExeFSRaw), xorfs, TopLength, ExeFSRaw.Length - TopLength);
decstream.Position = 0;
ExeFs = new ExeFS(decstream);
}
}
}
break;
}
case 1:
case 0x21:
{
byte[] aesctr = new byte[16];
NCCHInfo.GetNcchAesCounter(ref aesctr, CXI, NcchSection.exheader);
using (MemoryStream decstream = new MemoryStream())
{
Aes128Ctr.TransformFile(new byte[16], aesctr, decstream, exhstream, 0, exhstream.Length);
decstream.Position = 0;
CXI.ExHeader = StructReader.ReadStruct<NCCHExtendedHeader>(decstream);
CXI.AccessControlExtend = StructReader.ReadStruct<NCCHAccessControlExtend>(decstream);
}
NCCHInfo.GetNcchAesCounter(ref aesctr, CXI, NcchSection.exefs);
using (MemoryStream decstream = new MemoryStream())
{
Aes128Ctr.TransformFile(new byte[16], aesctr, decstream, new MemoryStream(ExeFSRaw), 0, ExeFSRaw.Length);
decstream.Position = 0;
ExeFs = new ExeFS(decstream);
}
break;
}
case 4:
case 5:
{
CXI.ExHeader = StructReader.ReadStruct<NCCHExtendedHeader>(exhstream);
CXI.AccessControlExtend = StructReader.ReadStruct<NCCHAccessControlExtend>(exhstream);
ExeFs = new ExeFS(new MemoryStream(ExeFSRaw));
break;
}
}
}
fs.Close();
ExeFs.SavedCode += ExeFs_SavedCode;
ExeFs.SavingCode += ExeFs_SavingCode;
ExeFs.DecompressingCode += ExeFs_DecompressingCode;
ExeFs.DecompressedCode += ExeFs_DecompressedCode;
}
public void Initial()
{
CXI = null;
ExeFs = null;
NcchOffset = 0;
ClearErrorMessage();
PB_1.Visible = false;
PB_1.Maximum = 0;
PB_1.Value = 0;
}
