public Savefile(Keyset keyset, Stream file, IntegrityCheckLevel integrityCheckLevel)
{
SavefileSource = new SharedStreamSource(file);
Header = new Header(keyset, SavefileSource);
FsLayout layout = Header.Layout;
DataRemapStorage = new RemapStorage(SavefileSource.CreateStream(layout.FileMapDataOffset, layout.FileMapDataSize),
Header.FileRemap, Header.FileMapEntries);
DuplexData = InitDuplexStream(DataRemapStorage, Header);
MetaRemapStorage = new RemapStorage(DuplexData, Header.MetaRemap, Header.MetaMapEntries);
Stream journalTable = MetaRemapStorage.OpenStream(layout.JournalTableOffset, layout.JournalTableSize);
MappingEntry[] journalMap = JournalStream.ReadMappingEntries(journalTable, Header.Journal.MainDataBlockCount);
Stream journalData = DataRemapStorage.OpenStream(layout.JournalDataOffset,
layout.JournalDataSizeB + layout.SizeReservedArea);
var journalStream = new JournalStream(journalData, journalMap, (int)Header.Journal.BlockSize);
JournalStreamSource = new SharedStreamSource(journalStream);
IvfcStream = InitIvfcStream(integrityCheckLevel);
SaveFs = new SaveFs(IvfcStream, MetaRemapStorage.OpenStream(layout.FatOffset, layout.FatSize), Header.Save);
IvfcStreamSource = new SharedStreamSource(IvfcStream);
}
private static LayeredDuplexFs InitDuplexStream(RemapStorage baseStorage, Header header)
{
FsLayout layout = header.Layout;
var duplexLayers = new DuplexFsLayerInfo[3];
duplexLayers[0] = new DuplexFsLayerInfo
{
DataA = new MemoryStream(header.DuplexMasterA),
DataB = new MemoryStream(header.DuplexMasterB),
Info = header.Duplex.Layers[0]
};
duplexLayers[1] = new DuplexFsLayerInfo
{
DataA = baseStorage.OpenStream(layout.DuplexL1OffsetA, layout.DuplexL1Size),
DataB = baseStorage.OpenStream(layout.DuplexL1OffsetB, layout.DuplexL1Size),
Info = header.Duplex.Layers[1]
};
duplexLayers[2] = new DuplexFsLayerInfo
{
DataA = baseStorage.OpenStream(layout.DuplexDataOffsetA, layout.DuplexDataSize),
DataB = baseStorage.OpenStream(layout.DuplexDataOffsetB, layout.DuplexDataSize),
Info = header.Duplex.Layers[2]
};
return(new LayeredDuplexFs(duplexLayers, layout.DuplexIndex == 1));
}
public Header(Keyset keyset, SharedStreamSource streamSource)
{
var reader = new BinaryReader(streamSource.CreateStream());
reader.BaseStream.Position = 0;
Data = reader.ReadBytes(0x4000);
reader.BaseStream.Position = 0;
Cmac = reader.ReadBytes(0x10);
reader.BaseStream.Position = 0x100;
Layout = new FsLayout(reader);
reader.BaseStream.Position = 0x300;
Duplex = new DuplexHeader(reader);
reader.BaseStream.Position = 0x344;
Ivfc = new IvfcHeader(reader);
reader.BaseStream.Position = 0x408;
Journal = new JournalHeader(reader);
reader.BaseStream.Position = 0x608;
Save = new SaveHeader(reader);
reader.BaseStream.Position = 0x650;
FileRemap = new RemapHeader(reader);
reader.BaseStream.Position = 0x690;
MetaRemap = new RemapHeader(reader);
reader.BaseStream.Position = 0x6D8;
ExtraData = new ExtraData(reader);
reader.BaseStream.Position = Layout.IvfcMasterHashOffsetA;
MasterHashA = reader.ReadBytes((int)Layout.IvfcMasterHashSize);
reader.BaseStream.Position = Layout.IvfcMasterHashOffsetB;
MasterHashB = reader.ReadBytes((int)Layout.IvfcMasterHashSize);
MasterHash = streamSource.CreateStream(Layout.IvfcMasterHashOffsetA, Layout.IvfcMasterHashSize);
reader.BaseStream.Position = Layout.DuplexMasterOffsetA;
DuplexMasterA = reader.ReadBytes((int)Layout.DuplexMasterSize);
reader.BaseStream.Position = Layout.DuplexMasterOffsetB;
DuplexMasterB = reader.ReadBytes((int)Layout.DuplexMasterSize);
reader.BaseStream.Position = Layout.FileMapEntryOffset;
FileMapEntries = new MapEntry[FileRemap.MapEntryCount];
for (int i = 0; i < FileRemap.MapEntryCount; i++)
{
FileMapEntries[i] = new MapEntry(reader);
}
reader.BaseStream.Position = Layout.MetaMapEntryOffset;
MetaMapEntries = new MapEntry[MetaRemap.MapEntryCount];
for (int i = 0; i < MetaRemap.MapEntryCount; i++)
{
MetaMapEntries[i] = new MapEntry(reader);
}
HeaderHashValidity = Crypto.CheckMemoryHashTable(Data, Layout.Hash, 0x300, 0x3d00);
SignatureValidity = ValidateSignature(keyset);
}
