// Main wrapper that assembles the ROM based on the following specifications:
internal static bool BuildROM(bool card2, string logoName,
string exefsPath, string romfsPath, string exheaderPath,
string serialText, string savePath)
{
// Sanity check the input files.
if (!
((File.Exists(exefsPath) || Directory.Exists(exefsPath)) &&
(File.Exists(romfsPath) || Directory.Exists(romfsPath)) &&
File.Exists(exheaderPath)))
{
return(false);
}
// If ExeFS and RomFS are not built, build.
if (!File.Exists(exefsPath) && Directory.Exists(exefsPath))
{
ExeFS.Set(Directory.GetFiles(exefsPath), exefsPath = "exefs.bin");
}
if (!File.Exists(romfsPath) && Directory.Exists(romfsPath))
{
RomFS.BuildRomFS(romfsPath, romfsPath = "romfs.bin");
}
Ncch ncch = Ctr.SetNcch(exefsPath, romfsPath, exheaderPath, serialText, logoName);
Ncsd ncsd = Ctr.SetNcsd(ncch, card2);
bool success = Ctr.WriteROM(ncsd, savePath);
return(success);
}
// Sub methods that drive the operation
internal static Ncch SetNcch(string exefsPath, string romfsPath, string exheaderPath, string tbSerial, string logoName)
{
Ncch ncch = new Ncch {
Exheader = new Exheader(exheaderPath),
Plainregion = new byte[0]
};
if (ncch.Exheader.IsPokemon())
{
if (ncch.Exheader.IsXy())
{
ncch.Plainregion = (byte[])Resources.ResourceManager.GetObject("XY");
}
else if (ncch.Exheader.IsOras())
{
ncch.Plainregion = (byte[])Resources.ResourceManager.GetObject("ORAS");
}
}
ncch.Exefs = new ExeFS(exefsPath);
ncch.Romfs = new RomFS(romfsPath);
ncch.Logo = (byte[])Resources.ResourceManager.GetObject(logoName);
ulong len = 0x200; //NCCH Signature + NCCH Header
ncch.HeaderData = new Ncch.Header {
Signature = new byte[0x100], Magic = 0x4843434E
};
ncch.HeaderData.TitleId = ncch.HeaderData.ProgramId = ncch.Exheader.TitleID;
ncch.HeaderData.MakerCode = 0x3130; //01
ncch.HeaderData.FormatVersion = 0x2; //Default
ncch.HeaderData.LogoHash = new SHA256Managed().ComputeHash(ncch.Logo);
ncch.HeaderData.ProductCode = Encoding.ASCII.GetBytes(tbSerial);
Array.Resize(ref ncch.HeaderData.ProductCode, 0x10);
ncch.HeaderData.ExheaderHash = ncch.Exheader.GetSuperBlockHash();
ncch.HeaderData.ExheaderSize = (uint)ncch.Exheader.Data.Length;
len += ncch.HeaderData.ExheaderSize + (uint)ncch.Exheader.AccessDescriptor.Length;
ncch.HeaderData.Flags = new byte[0x8];
//FLAGS
ncch.HeaderData.Flags[3] = 0; // Crypto: 0 = <7.x, 1=7.x;
ncch.HeaderData.Flags[4] = 1; // Content Platform: 1 = CTR;
ncch.HeaderData.Flags[5] = 0x3; // Content Type Bitflags: 1=Data, 2=Executable, 4=SysUpdate, 8=Manual, 0x10=Trial;
ncch.HeaderData.Flags[6] = 0; // MEDIA_UNIT_SIZE = 0x200*Math.Pow(2, Content.header.Flags[6]);
ncch.HeaderData.Flags[7] = 1; // FixedCrypto = 1, NoMountRomfs = 2; NoCrypto=4;
ncch.HeaderData.LogoOffset = (uint)(len / MediaUnitSize);
ncch.HeaderData.LogoSize = (uint)(ncch.Logo.Length / MediaUnitSize);
len += (uint)ncch.Logo.Length;
ncch.HeaderData.PlainRegionOffset = (uint)(ncch.Plainregion?.Length > 0
? len / MediaUnitSize
: 0);
ncch.HeaderData.PlainRegionSize = (uint)(ncch.Plainregion?.Length ?? 0) / MediaUnitSize;
len += (uint)(ncch.Plainregion?.Length ?? 0);
ncch.HeaderData.ExefsOffset = (uint)(len / MediaUnitSize);
ncch.HeaderData.ExefsSize = (uint)(ncch.Exefs.Data.Length / MediaUnitSize);
ncch.HeaderData.ExefsSuperBlockSize = 0x200 / MediaUnitSize; //Static 0x200 for exefs superblock
len += (uint)ncch.Exefs.Data.Length;
len = (uint)Ctr.Align(len, 0x1000); //Romfs Start is aligned to 0x1000
ncch.HeaderData.RomfsOffset = (uint)(len / MediaUnitSize);
ncch.HeaderData.RomfsSize = (uint)(new FileInfo(ncch.Romfs.FileName).Length / MediaUnitSize);
ncch.HeaderData.RomfsSuperBlockSize = ncch.Romfs.SuperBlockLen / MediaUnitSize;
len += ncch.HeaderData.RomfsSize * MediaUnitSize;
ncch.HeaderData.ExefsHash = ncch.Exefs.SuperBlockHash;
ncch.HeaderData.RomfsHash = ncch.Romfs.SuperBlockHash;
ncch.HeaderData.Size = (uint)(len / MediaUnitSize);
//Build the Header byte[].
ncch.HeaderData.BuildHeader();
return(ncch);
}
