/// <summary>
/// Read from a stream and get an NCCH header, if possible
/// </summary>
/// <param name="reader">BinaryReader representing the input stream</param>
/// <param name="readSignature">True if the RSA signature is read, false otherwise</param>
/// <returns>NCCH header object, null on error</returns>
public static NCCHHeader Read(BinaryReader reader, bool readSignature)
{
NCCHHeader header = new NCCHHeader();
try
{
if (readSignature)
{
header.RSA2048Signature = reader.ReadBytes(0x100);
}
if (new string(reader.ReadChars(4)) != NCCHMagicNumber)
{
return(null);
}
header.ContentSizeInMediaUnits = reader.ReadUInt32();
header.PartitionId = reader.ReadBytes(8).Reverse().ToArray();
header.MakerCode = reader.ReadUInt16();
header.Version = reader.ReadUInt16();
header.VerificationHash = reader.ReadUInt32();
header.ProgramId = reader.ReadBytes(8);
header.Reserved1 = reader.ReadBytes(0x10);
header.LogoRegionHash = reader.ReadBytes(0x20);
header.ProductCode = reader.ReadBytes(0x10);
header.ExtendedHeaderHash = reader.ReadBytes(0x20);
header.ExtendedHeaderSizeInBytes = reader.ReadUInt32();
header.Reserved2 = reader.ReadBytes(4);
header.Flags = NCCHHeaderFlags.Read(reader);
header.PlainRegionOffsetInMediaUnits = reader.ReadUInt32();
header.PlainRegionSizeInMediaUnits = reader.ReadUInt32();
header.LogoRegionOffsetInMediaUnits = reader.ReadUInt32();
header.LogoRegionSizeInMediaUnits = reader.ReadUInt32();
header.ExeFSOffsetInMediaUnits = reader.ReadUInt32();
header.ExeFSSizeInMediaUnits = reader.ReadUInt32();
header.ExeFSHashRegionSizeInMediaUnits = reader.ReadUInt32();
header.Reserved3 = reader.ReadBytes(4);
header.RomFSOffsetInMediaUnits = reader.ReadUInt32();
header.RomFSSizeInMediaUnits = reader.ReadUInt32();
header.RomFSHashRegionSizeInMediaUnits = reader.ReadUInt32();
header.Reserved4 = reader.ReadBytes(4);
header.ExeFSSuperblockHash = reader.ReadBytes(0x20);
header.RomFSSuperblockHash = reader.ReadBytes(0x20);
return(header);
}
catch
{
return(null);
}
}
/// <summary>
/// Read from a stream and get an NCSD header, if possible
/// </summary>
/// <param name="reader">BinaryReader representing the input stream</param>
/// <param name="development">True if development cart, false otherwise</param>
/// <returns>NCSD header object, null on error</returns>
public static NCSDHeader Read(BinaryReader reader, bool development)
{
NCSDHeader header = new NCSDHeader();
try
{
header.RSA2048Signature = reader.ReadBytes(0x100);
if (new string(reader.ReadChars(4)) != NCSDMagicNumber)
{
return(null);
}
header.ImageSizeInMediaUnits = reader.ReadUInt32();
header.MediaId = reader.ReadBytes(8);
header.PartitionsFSType = (FilesystemType)reader.ReadUInt64();
header.PartitionsCryptType = reader.ReadBytes(8);
header.PartitionsTable = new PartitionTableEntry[8];
for (int i = 0; i < 8; i++)
{
header.PartitionsTable[i] = PartitionTableEntry.Read(reader);
}
if (header.PartitionsFSType == FilesystemType.Normal ||
header.PartitionsFSType == FilesystemType.None)
{
header.ExheaderHash = reader.ReadBytes(0x20);
header.AdditionalHeaderSize = reader.ReadUInt32();
header.SectorZeroOffset = reader.ReadUInt32();
header.PartitionFlags = reader.ReadBytes(8);
header.PartitionIdTable = new byte[8][];
for (int i = 0; i < 8; i++)
{
header.PartitionIdTable[i] = reader.ReadBytes(8);
}
header.Reserved1 = reader.ReadBytes(0x20);
header.Reserved2 = reader.ReadBytes(0xE);
header.FirmUpdateByte1 = reader.ReadByte();
header.FirmUpdateByte2 = reader.ReadByte();
header.CARD2WritableAddressMediaUnits = reader.ReadBytes(4);
header.CardInfoBytemask = reader.ReadBytes(4);
header.Reserved3 = reader.ReadBytes(0x108);
header.TitleVersion = reader.ReadUInt16();
header.CardRevision = reader.ReadUInt16();
header.Reserved4 = reader.ReadBytes(0xCEC); // Incorrectly documented as 0xCEE
header.CardSeedKeyY = reader.ReadBytes(0x10);
header.EncryptedCardSeed = reader.ReadBytes(0x10);
header.CardSeedAESMAC = reader.ReadBytes(0x10);
header.CardSeedNonce = reader.ReadBytes(0xC);
header.Reserved5 = reader.ReadBytes(0xC4);
header.BackupHeader = NCCHHeader.Read(reader, readSignature: false);
if (development)
{
header.CardDeviceReserved1 = reader.ReadBytes(0x200);
header.TitleKey = reader.ReadBytes(0x10);
header.CardDeviceReserved2 = reader.ReadBytes(0xF0);
}
}
else if (header.PartitionsFSType == FilesystemType.FIRM)
{
header.Unknown = reader.ReadBytes(0x5E);
header.EncryptedMBR = reader.ReadBytes(0x42);
}
return(header);
}
catch
{
return(null);
}
}
/// <summary>
/// Read from a stream and get a CIA header, if possible
/// </summary>
/// <param name="reader">BinaryReader representing the input stream</param>
/// <returns>CIA header object, null on error</returns>
public static CIAHeader Read(BinaryReader reader)
{
CIAHeader header = new CIAHeader();
try
{
header.HeaderSize = reader.ReadInt32();
header.Type = reader.ReadUInt16();
header.Version = reader.ReadUInt16();
header.CertificateChainSize = reader.ReadInt32();
header.TicketSize = reader.ReadInt32();
header.TMDFileSize = reader.ReadInt32();
header.MetaSize = reader.ReadInt32();
header.ContentSize = reader.ReadInt64();
header.ContentIndex = reader.ReadBytes(0x2000);
if (reader.BaseStream.Position % 64 != 0)
{
reader.BaseStream.Seek(64 - (reader.BaseStream.Position % 64), SeekOrigin.Current);
}
header.CertificateChain = new Certificate[3];
header.CertificateChain[0] = Certificate.Read(reader); // CA
header.CertificateChain[1] = Certificate.Read(reader); // Ticket
header.CertificateChain[2] = Certificate.Read(reader); // TMD
if (reader.BaseStream.Position % 64 != 0)
{
reader.BaseStream.Seek(64 - (reader.BaseStream.Position % 64), SeekOrigin.Current);
}
header.Ticket = Ticket.Read(reader, header.TicketSize);
if (reader.BaseStream.Position % 64 != 0)
{
reader.BaseStream.Seek(64 - (reader.BaseStream.Position % 64), SeekOrigin.Current);
}
header.TMDFileData = TitleMetadata.Read(reader, header.TMDFileSize);
if (reader.BaseStream.Position % 64 != 0)
{
reader.BaseStream.Seek(64 - (reader.BaseStream.Position % 64), SeekOrigin.Current);
}
long startingPosition = reader.BaseStream.Position;
List <NCCHHeader> headers = new List <NCCHHeader>();
while (reader.BaseStream.Position < startingPosition + header.ContentSize)
{
long initPosition = reader.BaseStream.Position;
NCCHHeader ncchHeader = NCCHHeader.Read(reader, readSignature: true);
if (ncchHeader == null)
{
break;
}
headers.Add(ncchHeader);
reader.BaseStream.Seek(initPosition + ncchHeader.ContentSizeInMediaUnits * 0x200, SeekOrigin.Begin);
}
header.Partitions = headers.ToArray();
if (header.MetaSize > 0)
{
header.MetaFileData = MetaFile.Read(reader);
}
return(header);
}
catch
{
return(null);
}
}
