/// <summary>
/// Load all HFS0 partitions starting at the root. The calling function is expected to set stream.Position at the start of the root/first HFS0 Header (always 0xF000 for XCIs)
/// </summary>
/// <param name="stream"></param>
/// <returns></returns>
public static HFS0Root Load(string path, Stream stream)
{
// The "SHA-256 File System" or "HFS0" starts at offset 0xF000 in the Gamecard. The first 0x200 bytes act as a global header and represent the root partition which points to the other partitions ("normal", "logo", "update" and "secure").
// Where "logo" only exists in 4.0.0+ gamecards and if "logo" exists then "normal" is empty (but still exists)
Logger.Info("stream.Position = " + stream.Position);
// Root HFS0
HFS0Root root = new HFS0Root(path, stream, stream.Position);
// Since we just loaded the root HFS0 partition all the files inside it (FileEntries) are actually also HFS0 parititons
root.Partitions = new HFS0[root.Header.NumberOfFiles];
for (int i = 0; i < root.Header.NumberOfFiles; i++)
{
root.Partitions[i] = new HFS0(
path,
root.StringTable[i],
stream,
root.Offset + root.HeaderSize + (long)root.FileEntries[i].Offset, // Partition offset
// Partition offset (calc)
// root.Offset = 0xF000 for gamecards
// root.Size = 0x200 for gamecards
// root.FileEntries[i].Offset = partition offset relative to root.Offset + root.Size
// absolute offset for first partition = 0xF200
(long)root.FileEntries[i].Size
);
}
// TODO: Calculate Size (used for trimming, I think)
return(root);
}
/// <summary>
/// Load XCI file from disk
/// </summary>
/// <param name="path">Path to XCI file</param>
/// <param name="verify">Verify hashes and signatures</param>
/// <returns></returns>
public static XCI Load(string path, Keyset keyset, bool verify = true)
{
using (FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read))
using (BinaryReader br = new BinaryReader(fs))
{
XCI xci = new XCI(path);
xci.Keyset = keyset;
// Gamecard Header
byte[] bytes = br.ReadBytes(0x200); // sizeof XCIHeader
xci.GamecardHeader = bytes.ToStruct <XCIHeader>();
if (xci.GamecardHeader.MagicString != "HEAD")
{
throw new Exception("Invalid GamecardHeader magic! Maybe this isn't an XCI file?");
}
// TODO: Gamecard Info
// TODO: Gamecard Certificate
// TODO: Initial Data
// HFS0, see comments in HFS0Root and HFS0Partition
fs.Position = 0xF000; // start of HFS0Header
xci.FileSystem = HFS0Root.Load(path, fs);
return(xci);
}
}
