public void Read()
{
if (!IsOpen || IsDisposed)
{
throw new Exception("XenonPatch.Read: The Xenon patch is not open.");
}
if (HasBeenRead)
{
throw new Exception("XenonPatch.Read: The Xenon patch has already been read.");
}
eio.SetPosition(0);
Patches = new List <PatchEntry>();
//Just has Kernel+XAM.
{
var nextAddr = eio.Reader.ReadUInt32();
while (nextAddr != uint.MaxValue)
{
eio.SetPosition(-4, SeekOrigin.Current);
var entry = new PatchEntry();
entry.Read(eio.Reader);
Patches.Add(entry);
nextAddr = eio.Reader.ReadUInt32();
}
}
HasBeenRead = true;
}
public static CatalogFile Read(Stream input)
{
const Endian endian = Endian.Little;
var magic1 = input.ReadValueU64(endian);
var magic2 = input.ReadValueU64(endian);
if (magic1 != Signature || magic2 != Signature)
{
throw new FormatException();
}
var instance = new CatalogFile();
var normalCount = input.ReadValueU32(endian);
var patchCount = input.ReadValueU32(endian);
var encryptedCount = input.ReadValueU32(endian);
var unknown1C = input.ReadValueS32(endian); // patch version related?
var unknown20 = input.ReadValueS32(endian); // patch version related?
var unknown24 = input.ReadValueS32(endian); // patch version related?
instance.NormalEntries.Clear();
for (int i = 0; i < normalCount; i++)
{
var entry = NormalEntry.Read(input, endian);
if (entry.IsEncrypted == true)
{
throw new FormatException();
}
instance.NormalEntries.Add(entry);
}
instance.EncryptedEntries.Clear();
for (int i = 0; i < encryptedCount; i++)
{
var encryptedEntry = EncryptedChunkEntry.Read(input, endian);
if (encryptedEntry.Entry.IsEncrypted == false)
{
throw new FormatException();
}
if (encryptedEntry.Entry.Size != encryptedEntry.CryptoInfo.Size)
{
throw new FormatException();
}
instance.EncryptedEntries.Add(encryptedEntry);
}
instance.PatchEntries.Clear();
for (int i = 0; i < patchCount; i++)
{
var entry = PatchEntry.Read(input, endian);
instance.PatchEntries.Add(entry);
}
if (input.Position != input.Length)
{
throw new FormatException();
}
return(instance);
}