private static HierarchicalDuplexStorage InitDuplexStorage(IStorage baseStorage, Header header)
{
FsLayout layout = header.Layout;
var duplexLayers = new DuplexFsLayerInfo[3];
duplexLayers[0] = new DuplexFsLayerInfo
{
DataA = header.DuplexMasterBitmapA,
DataB = header.DuplexMasterBitmapB,
Info = header.Duplex.Layers[0]
};
duplexLayers[1] = new DuplexFsLayerInfo
{
DataA = baseStorage.Slice(layout.DuplexL1OffsetA, layout.DuplexL1Size),
DataB = baseStorage.Slice(layout.DuplexL1OffsetB, layout.DuplexL1Size),
Info = header.Duplex.Layers[1]
};
duplexLayers[2] = new DuplexFsLayerInfo
{
DataA = baseStorage.Slice(layout.DuplexDataOffsetA, layout.DuplexDataSize),
DataB = baseStorage.Slice(layout.DuplexDataOffsetB, layout.DuplexDataSize),
Info = header.Duplex.Layers[2]
};
return(new HierarchicalDuplexStorage(duplexLayers, layout.DuplexIndex == 1));
}
public Header(IStorage storage, KeySet keySet)
{
MainStorage = storage;
MainHeader = MainStorage.Slice(0x100, 0x200);
DuplexHeader = MainStorage.Slice(0x300, 0x44);
DataIvfcHeader = MainStorage.Slice(0x344, 0xC0);
JournalHeader = MainStorage.Slice(0x408, 0x200);
SaveHeader = MainStorage.Slice(0x608, 0x48);
MainRemapHeader = MainStorage.Slice(0x650, 0x40);
MetaDataRemapHeader = MainStorage.Slice(0x690, 0x40);
ExtraDataStorage = MainStorage.Slice(0x6D8, 0x400);
FatIvfcHeader = MainStorage.Slice(0xAD8, 0xC0);
Layout = new FsLayout(MainHeader);
DuplexMasterBitmapA = MainStorage.Slice(Layout.DuplexMasterOffsetA, Layout.DuplexMasterSize);
DuplexMasterBitmapB = MainStorage.Slice(Layout.DuplexMasterOffsetB, Layout.DuplexMasterSize);
DataIvfcMaster = MainStorage.Slice(Layout.IvfcMasterHashOffsetA, Layout.IvfcMasterHashSize);
FatIvfcMaster = MainStorage.Slice(Layout.FatIvfcMasterHashA, Layout.IvfcMasterHashSize);
var reader = new BinaryReader(storage.AsStream());
reader.BaseStream.Position = 0;
Data = reader.ReadBytes(0x4000);
reader.BaseStream.Position = 0;
Cmac = reader.ReadBytes(0x10);
reader.BaseStream.Position = 0x100;
reader.BaseStream.Position = 0x300;
Duplex = new DuplexHeader(reader);
reader.BaseStream.Position = 0x6D8;
ExtraData = new ExtraData(reader);
Ivfc = new IvfcHeader(DataIvfcHeader)
{
NumLevels = 5
};
if (Layout.Version >= 0x50000)
{
FatIvfc = new IvfcHeader(FatIvfcHeader)
{
NumLevels = 4
};
}
MasterHash = storage.Slice(Layout.IvfcMasterHashOffsetA, Layout.IvfcMasterHashSize);
Span <byte> actualHeaderHash = stackalloc byte[Sha256.DigestSize];
Sha256.GenerateSha256Hash(Data.AsSpan(0x300, 0x3d00), actualHeaderHash);
HeaderHashValidity = Utilities.SpansEqual(Layout.Hash, actualHeaderHash) ? Validity.Valid : Validity.Invalid;
SignatureValidity = ValidateSignature(keySet);
}
public Header(IStorage storage, Keyset keyset)
{
MainStorage = storage;
MainHeader = MainStorage.Slice(0x100, 0x200);
DuplexHeader = MainStorage.Slice(0x300, 0x44);
DataIvfcHeader = MainStorage.Slice(0x344, 0xC0);
JournalHeader = MainStorage.Slice(0x408, 0x200);
SaveHeader = MainStorage.Slice(0x608, 0x48);
MainRemapHeader = MainStorage.Slice(0x650, 0x40);
MetaDataRemapHeader = MainStorage.Slice(0x690, 0x40);
ExtraDataStorage = MainStorage.Slice(0x6D8, 0x400);
FatIvfcHeader = MainStorage.Slice(0xAD8, 0xC0);
Layout = new FsLayout(MainHeader);
DuplexMasterBitmapA = MainStorage.Slice(Layout.DuplexMasterOffsetA, Layout.DuplexMasterSize);
DuplexMasterBitmapB = MainStorage.Slice(Layout.DuplexMasterOffsetB, Layout.DuplexMasterSize);
DataIvfcMaster = MainStorage.Slice(Layout.IvfcMasterHashOffsetA, Layout.IvfcMasterHashSize);
FatIvfcMaster = MainStorage.Slice(Layout.FatIvfcMasterHashA, Layout.IvfcMasterHashSize);
var reader = new BinaryReader(storage.AsStream());
reader.BaseStream.Position = 0;
Data = reader.ReadBytes(0x4000);
reader.BaseStream.Position = 0;
Cmac = reader.ReadBytes(0x10);
reader.BaseStream.Position = 0x100;
reader.BaseStream.Position = 0x300;
Duplex = new DuplexHeader(reader);
reader.BaseStream.Position = 0x6D8;
ExtraData = new ExtraData(reader);
Ivfc = new IvfcHeader(DataIvfcHeader)
{
NumLevels = 5
};
if (Layout.Version >= 0x50000)
{
FatIvfc = new IvfcHeader(FatIvfcHeader)
{
NumLevels = 4
};
}
MasterHash = storage.Slice(Layout.IvfcMasterHashOffsetA, Layout.IvfcMasterHashSize);
HeaderHashValidity = Crypto.CheckMemoryHashTable(Data, Layout.Hash, 0x300, 0x3d00);
SignatureValidity = ValidateSignature(keyset);
}
public SaveDataFileSystem(Keyset keyset, IStorage storage, IntegrityCheckLevel integrityCheckLevel, bool leaveOpen)
{
BaseStorage = storage;
LeaveOpen = leaveOpen;
Keyset = keyset;
var headerA = new Header(BaseStorage, keyset);
var headerB = new Header(BaseStorage.Slice(0x4000), keyset);
if (headerA.HeaderHashValidity == Validity.Valid)
{
IsFirstHeaderInUse = true;
}
else if (headerB.HeaderHashValidity == Validity.Valid)
{
IsFirstHeaderInUse = false;
}
else
{
ThrowHelper.ThrowResult(ResultFs.InvalidSaveDataHeader, "Savedata header is not valid.");
}
Header = IsFirstHeaderInUse ? headerA : headerB;
FsLayout layout = Header.Layout;
IStorage dataRemapBase = BaseStorage.Slice(layout.FileMapDataOffset, layout.FileMapDataSize);
IStorage dataRemapEntries = BaseStorage.Slice(layout.FileMapEntryOffset, layout.FileMapEntrySize);
IStorage metadataRemapEntries = BaseStorage.Slice(layout.MetaMapEntryOffset, layout.MetaMapEntrySize);
DataRemapStorage = new RemapStorage(dataRemapBase, Header.MainRemapHeader, dataRemapEntries, leaveOpen);
DuplexStorage = InitDuplexStorage(DataRemapStorage, Header);
MetaRemapStorage = new RemapStorage(DuplexStorage, Header.MetaDataRemapHeader, metadataRemapEntries, leaveOpen);
var journalMapInfo = new JournalMapParams
{
MapStorage = MetaRemapStorage.Slice(layout.JournalMapTableOffset, layout.JournalMapTableSize),
PhysicalBlockBitmap = MetaRemapStorage.Slice(layout.JournalPhysicalBitmapOffset, layout.JournalPhysicalBitmapSize),
VirtualBlockBitmap = MetaRemapStorage.Slice(layout.JournalVirtualBitmapOffset, layout.JournalVirtualBitmapSize),
FreeBlockBitmap = MetaRemapStorage.Slice(layout.JournalFreeBitmapOffset, layout.JournalFreeBitmapSize),
};
IStorage journalData = DataRemapStorage.Slice(layout.JournalDataOffset,
layout.JournalDataSizeB + layout.JournalSize);
JournalStorage = new JournalStorage(journalData, Header.JournalHeader, journalMapInfo, leaveOpen);
CoreDataIvfcStorage = InitJournalIvfcStorage(integrityCheckLevel);
IStorage fatStorage = MetaRemapStorage.Slice(layout.FatOffset, layout.FatSize);
if (Header.Layout.Version >= 0x50000)
{
FatIvfcStorage = InitFatIvfcStorage(integrityCheckLevel);
fatStorage = FatIvfcStorage;
}
SaveDataFileSystemCore = new SaveDataFileSystemCore(CoreDataIvfcStorage, fatStorage, Header.SaveHeader);
}