public bool CommitHeader(Keyset keyset)
{
SharedStream headerStream = SavefileSource.CreateStream();
var hashData = new byte[0x3d00];
headerStream.Position = 0x300;
headerStream.Read(hashData, 0, hashData.Length);
byte[] hash = Crypto.ComputeSha256(hashData, 0, hashData.Length);
headerStream.Position = 0x108;
headerStream.Write(hash, 0, hash.Length);
if (keyset.SaveMacKey.IsEmpty())
{
return(false);
}
var cmacData = new byte[0x200];
var cmac = new byte[0x10];
headerStream.Position = 0x100;
headerStream.Read(cmacData, 0, 0x200);
Crypto.CalculateAesCmac(keyset.SaveMacKey, cmacData, 0, cmac, 0, 0x200);
headerStream.Position = 0;
headerStream.Write(cmac, 0, 0x10);
headerStream.Flush();
return(true);
}
public Stream OpenIni1()
{
int offset = 0x200 + Header.SectionSizes[0];
SharedStream encStream = StreamSource.CreateStream(offset, Header.SectionSizes[1]);
return(new RandomAccessSectorStream(new Aes128CtrStream(encStream, Key, Header.SectionCounters[1])));
}
private void SaveToFileInner()
{
ApiCallSource.AssertAccess(Permissions, Access.Write);
long pos = SharedStream.Stream.Position;
SharedStream.Seek(0);
File.WriteAllBytes(SourcePath, SharedStream.ReadToEnd());
SharedStream.Seek(pos);
}
internal void SaveToFileInner()
{
ApiCallSource.AssertAccess(Permissions, Access.Write);
var pos = SharedStream.Stream.Position;
SharedStream.Seek(0);
File.WriteAllText(SourcePath, SharedStream.ReadToEnd());
SharedStream.Seek(pos);
}
public Stream OpenHeaderPart2()
{
SharedStream encStream = StreamSource.CreateStream(0x110, 0xF0);
// The counter starts counting at 0x100, but the block at 0x100 isn't encrypted.
// Increase the counter by one and start decrypting at 0x110.
var counter = new byte[0x10];
Array.Copy(Header.Counter, counter, 0x10);
Util.IncrementByteArray(counter);
return(new RandomAccessSectorStream(new Aes128CtrStream(encStream, Key, counter)));
}
internal void SerializeInner <TObject>(TObject obj, WriteMode writeMode = WriteMode.Overwrite)
{
ApiCallSource.AssertAccess(Permissions, Access.Write);
if (writeMode == WriteMode.Overwrite)
{
SharedStream.Seek(0);
SharedStream.SetLength(0);
}
else
{
SharedStream.Seek(0, SeekOrigin.End);
}
SharedStream.WriteLine(JsonConvert.SerializeObject(obj, Formatting.Indented));
}
internal void SerializeInner <TObject>(TObject obj, WriteMode writeMode = WriteMode.Overwrite)
{
ApiCallSource.AssertAccess(Permissions, Access.Write);
if (writeMode == WriteMode.Overwrite)
{
SharedStream.Seek(0);
SharedStream.SetLength(0);
}
else
{
SharedStream.Seek(0, SeekOrigin.End);
}
using (var writer = new StringWriter())
{
new XmlSerializer(typeof(TObject)).Serialize(writer, obj);
SharedStream.WriteLine(writer.ToString());
}
}
public Package2(Keyset keyset, Stream stream)
{
StreamSource = new SharedStreamSource(stream);
SharedStream headerStream = StreamSource.CreateStream(0, 0x200);
KeyRevision = FindKeyGeneration(keyset, headerStream);
Key = keyset.Package2Keys[KeyRevision];
Header = new Package2Header(headerStream, Key);
PackageSize = BitConverter.ToInt32(Header.Counter, 0) ^ BitConverter.ToInt32(Header.Counter, 8) ^
BitConverter.ToInt32(Header.Counter, 12);
HeaderVersion = Header.Counter[4] ^ Header.Counter[6] ^ Header.Counter[7];
if (PackageSize != 0x200 + Header.SectionSizes[0] + Header.SectionSizes[1] + Header.SectionSizes[2])
{
throw new InvalidDataException("Package2 Header is corrupt!");
}
}
internal TObject DeserializeInner <TObject>(long offset = long.MaxValue, SeekOrigin loc = SeekOrigin.Begin, bool retainPosition = true)
{
ApiCallSource.AssertAccess(Permissions, Access.Read);
long?returnPosition = null;
if (offset != long.MaxValue)
{
if (retainPosition)
{
returnPosition = SharedStream.Stream.Position;
}
SharedStream.Seek(offset, loc);
}
TObject obj = (TObject) new XmlSerializer(typeof(TObject)).Deserialize(new StreamReader(SharedStream.Stream));
if (returnPosition != null)
{
SharedStream.Seek(returnPosition.Value);
}
return(obj);
}
public bool SignHeader(Keyset keyset)
{
if (keyset.SaveMacKey.IsEmpty())
{
return(false);
}
var data = new byte[0x200];
var cmac = new byte[0x10];
SharedStream headerStream = SavefileSource.CreateStream();
headerStream.Position = 0x100;
headerStream.Read(data, 0, 0x200);
Crypto.CalculateAesCmac(keyset.SaveMacKey, data, 0, cmac, 0, 0x200);
headerStream.Position = 0;
headerStream.Write(cmac, 0, 0x10);
return(true);
}
internal TObject DeserializeInner <TObject>(long offset = long.MaxValue, SeekOrigin loc = SeekOrigin.Begin,
bool retainPosition = true)
{
ApiCallSource.AssertAccess(Permissions, Access.Read);
long?returnPosition = null;
if (offset != long.MaxValue)
{
if (retainPosition)
{
returnPosition = SharedStream.Stream.Position;
}
SharedStream.Seek(offset, loc);
}
var obj = JsonConvert.DeserializeObject <TObject>(SharedStream.ReadToEnd());
if (returnPosition != null)
{
SharedStream.Seek(returnPosition.Value);
}
return(obj);
}
public Savefile(Keyset keyset, Stream file, bool enableIntegrityChecks)
{
SavefileSource = new SharedStreamSource(file);
using (var reader = new BinaryReader(SavefileSource.CreateStream(), Encoding.Default, true))
{
Header = new Header(keyset, reader);
FsLayout layout = Header.Layout;
FileRemap = new RemapStream(
SavefileSource.CreateStream(layout.FileMapDataOffset, layout.FileMapDataSize),
Header.FileMapEntries, Header.FileRemap.MapSegmentCount);
FileRemapSource = new SharedStreamSource(FileRemap);
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 = FileRemapSource.CreateStream(layout.DuplexL1OffsetA, layout.DuplexL1Size),
DataB = FileRemapSource.CreateStream(layout.DuplexL1OffsetB, layout.DuplexL1Size),
Info = Header.Duplex.Layers[1]
};
duplexLayers[2] = new DuplexFsLayerInfo
{
DataA = FileRemapSource.CreateStream(layout.DuplexDataOffsetA, layout.DuplexDataSize),
DataB = FileRemapSource.CreateStream(layout.DuplexDataOffsetB, layout.DuplexDataSize),
Info = Header.Duplex.Layers[2]
};
DuplexL1A = FileRemapSource.CreateStream(layout.DuplexL1OffsetA, layout.DuplexL1Size);
DuplexL1B = FileRemapSource.CreateStream(layout.DuplexL1OffsetB, layout.DuplexL1Size);
DuplexDataA = FileRemapSource.CreateStream(layout.DuplexDataOffsetA, layout.DuplexDataSize);
DuplexDataB = FileRemapSource.CreateStream(layout.DuplexDataOffsetB, layout.DuplexDataSize);
JournalData = FileRemapSource.CreateStream(layout.JournalDataOffset, layout.JournalDataSizeB + layout.SizeReservedArea);
DuplexData = new LayeredDuplexFs(duplexLayers, Header.Layout.DuplexIndex == 1);
MetaRemap = new RemapStream(DuplexData, Header.MetaMapEntries, Header.MetaRemap.MapSegmentCount);
MetaRemapSource = new SharedStreamSource(MetaRemap);
JournalTable = MetaRemapSource.CreateStream(layout.JournalTableOffset, layout.JournalTableSize);
JournalBitmapUpdatedPhysical = MetaRemapSource.CreateStream(layout.JournalBitmapUpdatedPhysicalOffset, layout.JournalBitmapUpdatedPhysicalSize);
JournalBitmapUpdatedVirtual = MetaRemapSource.CreateStream(layout.JournalBitmapUpdatedVirtualOffset, layout.JournalBitmapUpdatedVirtualSize);
JournalBitmapUnassigned = MetaRemapSource.CreateStream(layout.JournalBitmapUnassignedOffset, layout.JournalBitmapUnassignedSize);
JournalLayer1Hash = MetaRemapSource.CreateStream(layout.IvfcL1Offset, layout.IvfcL1Size);
JournalLayer2Hash = MetaRemapSource.CreateStream(layout.IvfcL2Offset, layout.IvfcL2Size);
JournalLayer3Hash = MetaRemapSource.CreateStream(layout.IvfcL3Offset, layout.IvfcL3Size);
JournalFat = MetaRemapSource.CreateStream(layout.FatOffset, layout.FatSize);
AllocationTable = new AllocationTable(JournalFat);
MappingEntry[] journalMap = JournalStream.ReadMappingEntries(JournalTable, Header.Journal.MainDataBlockCount);
SharedStream journalData = FileRemapSource.CreateStream(layout.JournalDataOffset,
layout.JournalDataSizeB + layout.SizeReservedArea);
JournalStream = new JournalStream(journalData, journalMap, (int)Header.Journal.BlockSize);
JournalStreamSource = new SharedStreamSource(JournalStream);
IvfcStream = InitIvfcStream(enableIntegrityChecks);
IvfcStreamSource = new SharedStreamSource(IvfcStream);
ReadFileInfo();
var dictionary = new Dictionary <string, FileEntry>();
foreach (FileEntry entry in Files)
{
dictionary[entry.FullPath] = entry;
}
FileDict = dictionary;
}
}
internal byte[]? ReadToEndInner()
{
ApiCallSource.AssertAccess(Permissions, Access.Read);
return(SharedStream?.ReadToEnd());
}
