/// <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);
}
}
/// <summary>
/// Read from a stream and get ticket metadata, if possible
/// </summary>
/// <param name="reader">BinaryReader representing the input stream</param>
/// <param name="metadataSize">Metadata size from the header</param>
/// <returns>Title metadata object, null on error</returns>
public static TitleMetadata Read(BinaryReader reader, int metadataSize)
{
TitleMetadata tm = new TitleMetadata();
try
{
long startingPosition = reader.BaseStream.Position;
tm.SignatureType = (SignatureType)reader.ReadUInt32();
switch (tm.SignatureType)
{
case SignatureType.RSA_4096_SHA1:
case SignatureType.RSA_4096_SHA256:
tm.SignatureSize = 0x200;
tm.PaddingSize = 0x3C;
break;
case SignatureType.RSA_2048_SHA1:
case SignatureType.RSA_2048_SHA256:
tm.SignatureSize = 0x100;
tm.PaddingSize = 0x3C;
break;
case SignatureType.ECDSA_SHA1:
case SignatureType.ECDSA_SHA256:
tm.SignatureSize = 0x03C;
tm.PaddingSize = 0x40;
break;
}
tm.Signature = reader.ReadBytes(tm.SignatureSize);
reader.ReadBytes(tm.PaddingSize); // Padding
tm.SignatureIssuer = reader.ReadBytes(0x40);
tm.Version = reader.ReadByte();
tm.CaCrlVersion = reader.ReadByte();
tm.SignerCrlVersion = reader.ReadByte();
tm.Reserved1 = reader.ReadByte();
tm.SystemVersion = reader.ReadUInt64();
tm.TitleID = reader.ReadUInt64();
tm.TitleType = reader.ReadUInt32();
tm.GroupID = reader.ReadUInt16();
tm.SaveDataSize = reader.ReadUInt32();
tm.SRLPrivateSaveDataSize = reader.ReadUInt32();
tm.Reserved2 = reader.ReadUInt32();
tm.SRLFlag = reader.ReadByte();
tm.Reserved3 = reader.ReadBytes(0x31);
tm.AccessRights = reader.ReadUInt32();
tm.TitleVersion = reader.ReadUInt16();
tm.ContentCount = BitConverter.ToUInt16(reader.ReadBytes(2).Reverse().ToArray(), 0);
tm.BootContent = reader.ReadUInt16();
tm.Padding = reader.ReadUInt16();
tm.SHA256HashContentInfoRecords = reader.ReadBytes(0x20);
tm.ContentInfoRecords = new ContentInfoRecord[64];
for (int i = 0; i < 64; i++)
{
tm.ContentInfoRecords[i] = ContentInfoRecord.Read(reader);
}
tm.ContentChunkRecords = new ContentChunkRecord[tm.ContentCount];
for (int i = 0; i < tm.ContentCount; i++)
{
tm.ContentChunkRecords[i] = ContentChunkRecord.Read(reader);
}
if (metadataSize > (reader.BaseStream.Position - startingPosition) + (2 * 0x200))
{
tm.CertificateChain = new Certificate[2];
tm.CertificateChain[0] = Certificate.Read(reader); // TMD
tm.CertificateChain[1] = Certificate.Read(reader); // CA
}
return(tm);
}
catch
{
return(null);
}
}
