public static SaveFile Deserialize(Stream input, Platform platform, DeserializeSettings settings)
{
if (platform != Platform.PC &&
platform != Platform.X360 &&
platform != Platform.PS3)
{
throw new ArgumentException("unsupported platform", "platform");
}
if (input.Position + 20 > input.Length)
{
throw new SaveCorruptionException("not enough data for save header");
}
var check = input.ReadValueU32(Endian.Big);
if (check == 0x434F4E20)
{
throw new SaveFormatException("cannot load XBOX 360 CON files, extract save using Modio or equivalent");
}
input.Seek(-4, SeekOrigin.Current);
var readSha1Hash = input.ReadBytes(20);
using (var data = input.ReadToMemoryStream(input.Length - 20))
{
byte[] computedSha1Hash;
using (var sha1 = new System.Security.Cryptography.SHA1Managed())
{
computedSha1Hash = sha1.ComputeHash(data);
}
if ((settings & DeserializeSettings.IgnoreSha1Mismatch) == 0 &&
readSha1Hash.SequenceEqual(computedSha1Hash) == false)
{
throw new SaveCorruptionException("invalid SHA1 hash");
}
data.Position = 0;
var uncompressedSize = data.ReadValueU32(Endian.Big);
var uncompressedBytes = new byte[uncompressedSize];
if (uncompressedSize <= BlockSize)
{
if (platform == Platform.PC ||
platform == Platform.X360)
{
var actualUncompressedSize = (int)uncompressedSize;
var compressedSize = (uint)(data.Length - 4);
var compressedBytes = data.ReadBytes(compressedSize);
var result = LZO.Decompress(compressedBytes,
0,
(int)compressedSize,
uncompressedBytes,
0,
ref actualUncompressedSize);
if (result != LZO.ErrorCode.Success)
{
throw new SaveCorruptionException(string.Format("LZO decompression failure ({0})", result));
}
if (actualUncompressedSize != (int)uncompressedSize)
{
throw new SaveCorruptionException("LZO decompression failure (uncompressed size mismatch)");
}
}
else
{
var compressedSize = (uint)(data.Length - 4);
using (var temp = data.ReadToMemoryStream(compressedSize))
{
var zlib = new InflaterInputStream(temp);
try
{
if (zlib.Read(uncompressedBytes, 0, uncompressedBytes.Length) !=
uncompressedBytes.Length)
{
throw new SaveCorruptionException(
"zlib decompression failure (uncompressed size mismatch)");
}
}
catch (ICSharpCode.SharpZipLib.SharpZipBaseException e)
{
throw new SaveCorruptionException(string.Format("zlib decompression failure ({0})",
e.Message),
e);
}
}
}
}
else
{
if (platform == Platform.PC ||
platform == Platform.X360)
{
var blockCount = data.ReadValueU32(Endian.Big);
var blockInfos = new List <Tuple <uint, uint> >();
for (uint i = 0; i < blockCount; i++)
{
var blockCompressedSize = data.ReadValueU32(Endian.Big);
var blockUncompressedSize = data.ReadValueU32(Endian.Big);
blockInfos.Add(new Tuple <uint, uint>(blockCompressedSize, blockUncompressedSize));
}
int uncompressedOffset = 0;
int uncompressedSizeLeft = (int)uncompressedSize;
foreach (var blockInfo in blockInfos)
{
var blockUncompressedSize = Math.Min((int)blockInfo.Item2, uncompressedSizeLeft);
var actualUncompressedSize = blockUncompressedSize;
var compressedSize = (int)blockInfo.Item1;
var compressedBytes = data.ReadBytes(compressedSize);
var result = LZO.Decompress(compressedBytes,
0,
compressedSize,
uncompressedBytes,
uncompressedOffset,
ref actualUncompressedSize);
if (result != LZO.ErrorCode.Success)
{
throw new SaveCorruptionException(string.Format("LZO decompression failure ({0})",
result));
}
if (actualUncompressedSize != blockUncompressedSize)
{
throw new SaveCorruptionException(
"LZO decompression failure (uncompressed size mismatch)");
}
uncompressedOffset += blockUncompressedSize;
uncompressedSizeLeft -= blockUncompressedSize;
}
if (uncompressedSizeLeft != 0)
{
throw new SaveCorruptionException("LZO decompression failure (uncompressed size left != 0)");
}
}
else if (platform == Platform.PS3)
{
var blockCount = data.ReadValueU32(Endian.Big);
var blockInfos = new List <Tuple <uint, uint> >();
for (uint i = 0; i < blockCount; i++)
{
var blockCompressedSize = data.ReadValueU32(Endian.Big);
var blockUncompressedSize = data.ReadValueU32(Endian.Big);
blockInfos.Add(new Tuple <uint, uint>(blockCompressedSize, blockUncompressedSize));
}
int uncompressedOffset = 0;
int uncompressedSizeLeft = (int)uncompressedSize;
foreach (var blockInfo in blockInfos)
{
var blockUncompressedSize = Math.Min((int)blockInfo.Item2, uncompressedSizeLeft);
int actualUncompressedSize;
var compressedSize = (int)blockInfo.Item1;
using (var temp = data.ReadToMemoryStream(compressedSize))
{
var zlib = new InflaterInputStream(temp);
try
{
actualUncompressedSize = zlib.Read(uncompressedBytes,
uncompressedOffset,
uncompressedBytes.Length);
}
catch (ICSharpCode.SharpZipLib.SharpZipBaseException e)
{
throw new SaveCorruptionException(string.Format("zlib decompression failure ({0})",
e.Message),
e);
}
}
if (actualUncompressedSize != blockUncompressedSize)
{
throw new SaveCorruptionException(
"zlib decompression failure (uncompressed size mismatch)");
}
uncompressedOffset += blockUncompressedSize;
uncompressedSizeLeft -= blockUncompressedSize;
}
if (uncompressedSizeLeft != 0)
{
throw new SaveCorruptionException("zlib decompression failure (uncompressed size left != 0)");
}
}
else
{
throw new InvalidOperationException("unsupported platform");
}
}
using (var outerData = new MemoryStream(uncompressedBytes))
{
var endian = platform == Platform.PC ? Endian.Little : Endian.Big;
var innerSize = outerData.ReadValueU32(Endian.Big);
var magic = outerData.ReadString(3);
if (magic != "WSG")
{
throw new SaveCorruptionException("invalid magic");
}
var version = outerData.ReadValueU32(endian);
if (version != 2)
{
throw new SaveCorruptionException("invalid or unsupported version");
}
var readCRC32Hash = outerData.ReadValueU32(endian);
var innerUncompressedSize = outerData.ReadValueS32(endian);
var innerCompressedBytes = outerData.ReadBytes(innerSize - 3 - 4 - 4 - 4);
var innerUncompressedBytes = Huffman.Decoder.Decode(innerCompressedBytes,
innerUncompressedSize);
if (innerUncompressedBytes.Length != innerUncompressedSize)
{
throw new SaveCorruptionException("huffman decompression failure");
}
var computedCRC32Hash = CRC32.Hash(innerUncompressedBytes, 0, innerUncompressedBytes.Length);
if ((settings & DeserializeSettings.IgnoreCrc32Mismatch) == 0 &&
computedCRC32Hash != readCRC32Hash)
{
throw new SaveCorruptionException("invalid CRC32 hash");
}
using (var innerUncompressedData = new MemoryStream(innerUncompressedBytes))
{
var saveGame =
ProtoBuf.Serializer.Deserialize <WillowTwoSave.WillowTwoPlayerSaveGame>(innerUncompressedData);
PlayerStats playerStats = null;
if (saveGame.StatsData != null &&
PlayerStats.IsSupportedVersion(saveGame.StatsData, endian) == true)
{
playerStats = new PlayerStats();
playerStats.Deserialize(saveGame.StatsData, endian);
}
if ((settings & DeserializeSettings.IgnoreReencodeMismatch) == 0)
{
using (var testData = new MemoryStream())
{
byte[] oldStatsData = saveGame.StatsData;
if (playerStats != null)
{
saveGame.StatsData = playerStats.Serialize(endian);
}
ProtoBuf.Serializer.Serialize(testData, saveGame);
if (playerStats != null)
{
saveGame.StatsData = oldStatsData;
}
testData.Position = 0;
var testBytes = testData.ReadBytes((uint)testData.Length);
if (innerUncompressedBytes.SequenceEqual(testBytes) == false)
{
throw new SaveCorruptionException("reencode mismatch");
}
}
}
return(new SaveFile()
{
Platform = platform,
SaveGame = saveGame,
PlayerStats = playerStats,
});
}
}
}
}
public static SaveFile Deserialize(Stream input, DeserializeSettings settings)
{
if (input.Position + 20 > input.Length)
{
throw new SaveCorruptionException("not enough data for save header");
}
var check = input.ReadValueU32(Endian.Big);
if (check == 0x434F4E20)
{
throw new SaveFormatException("Xbox 360 save game loading is in the works");
}
input.Seek(-4, SeekOrigin.Current);
var readSha1Hash = input.ReadBytes(20);
using (var data = input.ReadToMemoryStream(input.Length - 20))
{
byte[] computedSha1Hash;
using (var sha1 = new System.Security.Cryptography.SHA1Managed())
{
computedSha1Hash = sha1.ComputeHash(data);
}
if ((settings & DeserializeSettings.IgnoreSha1Mismatch) == 0 &&
readSha1Hash.SequenceEqual(computedSha1Hash) == false)
{
throw new SaveCorruptionException("invalid SHA1 hash");
}
data.Position = 0;
var uncompressedSize = data.ReadValueU32(Endian.Big);
var uncompressedBytes = new byte[uncompressedSize];
if (uncompressedSize <= BlockSize)
{
var actualUncompressedSize = (int)uncompressedSize;
var compressedSize = (uint)(data.Length - 4);
var compressedBytes = data.ReadBytes(compressedSize);
var result = LZO.Decompress(compressedBytes,
0,
(int)compressedSize,
uncompressedBytes,
0,
ref actualUncompressedSize);
if (result != LZO.ErrorCode.Success)
{
throw new SaveCorruptionException(string.Format("LZO decompression failure ({0})", result));
}
if (actualUncompressedSize != (int)uncompressedSize)
{
throw new SaveCorruptionException("LZO decompression failure (uncompressed size mismatch)");
}
}
else
{
var blockCount = data.ReadValueU32(Endian.Big);
var blockInfos = new List <Tuple <uint, uint> >();
for (uint i = 0; i < blockCount; i++)
{
var blockCompressedSize = data.ReadValueU32(Endian.Big);
var blockUncompressedSize = data.ReadValueU32(Endian.Big);
blockInfos.Add(new Tuple <uint, uint>(blockCompressedSize, blockUncompressedSize));
}
int uncompressedOffset = 0;
int uncompressedSizeLeft = (int)uncompressedSize;
foreach (var blockInfo in blockInfos)
{
var blockUncompressedSize = Math.Min((int)blockInfo.Item2, uncompressedSizeLeft);
var actualUncompressedSize = blockUncompressedSize;
var compressedSize = (int)blockInfo.Item1;
var compressedBytes = data.ReadBytes(compressedSize);
var result = LZO.Decompress(compressedBytes,
0,
compressedSize,
uncompressedBytes,
uncompressedOffset,
ref actualUncompressedSize);
if (result != LZO.ErrorCode.Success)
{
throw new SaveCorruptionException(string.Format("LZO decompression failure ({0})", result));
}
if (actualUncompressedSize != blockUncompressedSize)
{
throw new SaveCorruptionException("LZO decompression failure (uncompressed size mismatch)");
}
uncompressedOffset += blockUncompressedSize;
uncompressedSizeLeft -= blockUncompressedSize;
}
if (uncompressedSizeLeft != 0)
{
throw new SaveCorruptionException("LZO decompression failure (uncompressed size left != 0)");
}
}
using (var outerData = new MemoryStream(uncompressedBytes))
{
var innerSize = outerData.ReadValueU32(Endian.Big);
var magic = outerData.ReadString(3);
if (magic != "WSG")
{
throw new SaveCorruptionException("invalid magic");
}
var version = outerData.ReadValueU32(Endian.Little);
if (version != 2 &&
version.Swap() != 2)
{
throw new SaveCorruptionException("invalid or unsupported version");
}
var endian = version == 2 ? Endian.Little : Endian.Big;
var readCRC32Hash = outerData.ReadValueU32(endian);
var innerUncompressedSize = outerData.ReadValueS32(endian);
var innerCompressedBytes = outerData.ReadBytes(innerSize - 3 - 4 - 4 - 4);
var innerUncompressedBytes = Huffman.Decoder.Decode(innerCompressedBytes,
innerUncompressedSize);
if (innerUncompressedBytes.Length != innerUncompressedSize)
{
throw new SaveCorruptionException("huffman decompression failure");
}
var computedCRC32Hash = CRC32.Hash(innerUncompressedBytes, 0, innerUncompressedBytes.Length);
if ((settings & DeserializeSettings.IgnoreCrc32Mismatch) == 0 &&
computedCRC32Hash != readCRC32Hash)
{
throw new SaveCorruptionException("invalid CRC32 hash");
}
using (var innerUncompressedData = new MemoryStream(innerUncompressedBytes))
{
var saveGame =
ProtoBuf.Serializer.Deserialize <WillowTwoSave.WillowTwoPlayerSaveGame>(innerUncompressedData);
if ((settings & DeserializeSettings.IgnoreReencodeMismatch) == 0)
{
using (var testData = new MemoryStream())
{
ProtoBuf.Serializer.Serialize(testData, saveGame);
testData.Position = 0;
var testBytes = testData.ReadBytes((uint)testData.Length);
if (innerUncompressedBytes.SequenceEqual(testBytes) == false)
{
throw new SaveCorruptionException("reencode mismatch");
}
}
}
saveGame.Decompose();
return(new SaveFile()
{
Endian = endian,
SaveGame = saveGame,
});
}
}
}
}