internal void ParseMainWzDirectory()
{
if (FilePath == null)
{
_log.Error("Path is null");
return;
}
if (!File.Exists(FilePath))
{
var message = $"WZ File does not exist at path: '{FilePath}'";
_log.Error(message);
throw new FileNotFoundException(message);
}
var reader = new WzBinaryReader(File.Open(FilePath, FileMode.Open, FileAccess.Read, FileShare.Read), _wzIv);
Header = new WzHeader
{
Ident = reader.ReadString(4),
FSize = reader.ReadUInt64(),
FStart = reader.ReadUInt32(),
Copyright = reader.ReadNullTerminatedString()
};
reader.ReadBytes((int)(Header.FStart - reader.BaseStream.Position));
reader.Header = Header;
_version = reader.ReadInt16();
if (Version == -1 && !CalculateVersion(reader))
{
throw new InvalidDataException(
"Error with game version hash : The specified game version is incorrect");
}
_versionHash = GetVersionHash(_version, Version);
reader.Hash = _versionHash;
var tempDirectory = new WzDirectory(reader, Name, _versionHash, _wzIv, this);
tempDirectory.ParseDirectory();
WzDirectory = tempDirectory;
}
private void ParseMainWzDirectory(byte[] wzIv)
{
if (FilePath == null)
{
throw new ArgumentNullException(nameof(FilePath), "WZ File path is null");
}
if (!File.Exists(FilePath))
{
throw new FileNotFoundException($"WZ File does not exist at path: '{FilePath}'");
}
var mmf = MemoryMappedFile.CreateFromFile(FilePath);
var reader = new WzBinaryReader(mmf.CreateViewStream(), wzIv);
Header = new WzHeader
{
Ident = reader.ReadString(4),
FSize = reader.ReadUInt64(),
FStart = reader.ReadUInt32(),
Copyright = reader.ReadNullTerminatedString()
};
reader.ReadBytes((int)(Header.FStart - reader.BaseStream.Position));
reader.Header = Header;
_version = reader.ReadInt16();
if (Version == -1 && !CalculateVersion(reader))
{
throw new InvalidDataException(
"Error with game version hash : The specified game version is incorrect");
}
_versionHash = GetVersionHash(_version, Version);
reader.Hash = _versionHash;
var tempDirectory = new WzDirectory(reader, Name, _versionHash, wzIv, this);
tempDirectory.ParseDirectory();
WzDirectory = tempDirectory;
}
internal void ParseMainWzDirectory()
{
if (this.path == null)
{
Helpers.ErrorLogger.Log(Helpers.ErrorLevel.Critical, "[Error] Path is null");
return;
}
WzBinaryReader reader = new WzBinaryReader(File.Open(this.path, FileMode.Open, FileAccess.Read, FileShare.Read), mapleVersion);
this.Header = new WzHeader();
this.Header.Ident = reader.ReadString(4);
this.Header.FSize = reader.ReadUInt64();
this.Header.FStart = reader.ReadUInt32();
this.Header.Copyright = reader.ReadNullTerminatedString();
reader.ReadBytes((int)(Header.FStart - reader.BaseStream.Position));
reader.Header = this.Header;
this.version = reader.ReadInt16();
if (fileVersion == -1)
{
for (int j = 0; j < short.MaxValue; j++)
{
this.fileVersion = (short)j;
this.versionHash = GetVersionHash(version, fileVersion);
if (this.versionHash != 0)
{
reader.Hash = this.versionHash;
long position = reader.BaseStream.Position;
WzDirectory testDirectory = null;
try
{
testDirectory = new WzDirectory(reader, this.name, this.versionHash, this.WzIv, this);
testDirectory.ParseDirectory();
}
catch
{
reader.BaseStream.Position = position;
continue;
}
WzImage testImage = testDirectory.GetChildImages()[0];
try
{
reader.BaseStream.Position = testImage.Offset;
byte checkByte = reader.ReadByte();
reader.BaseStream.Position = position;
testDirectory.Dispose();
switch (checkByte)
{
case 0x73:
case 0x1b:
{
WzDirectory directory = new WzDirectory(reader, this.name, this.versionHash, this.WzIv, this);
directory.ParseDirectory();
this.wzDir = directory;
return;
}
}
reader.BaseStream.Position = position;
}
catch
{
reader.BaseStream.Position = position;
}
}
}
throw new Exception("Error with game version hash : The specified game version is incorrect and WzLib was unable to determine the version itself");
}
else
{
this.versionHash = GetVersionHash(version, fileVersion);
reader.Hash = this.versionHash;
WzDirectory directory = new WzDirectory(reader, this.name, this.versionHash, this.WzIv, this);
directory.ParseDirectory();
this.wzDir = directory;
}
}
/// <summary>
/// Parse directories in the WZ file
/// </summary>
/// <param name="parseErrorMessage"></param>
/// <param name="lazyParse">Only load the firt WzDirectory found if true</param>
/// <returns></returns>
internal bool ParseMainWzDirectory(out string parseErrorMessage, bool lazyParse = false)
{
if (this.path == null)
{
Helpers.ErrorLogger.Log(Helpers.ErrorLevel.Critical, "[Error] Path is null");
parseErrorMessage = "[Error] Path is null";
return(false);
}
WzBinaryReader reader = new WzBinaryReader(File.Open(this.path, FileMode.Open, FileAccess.Read, FileShare.Read), WzIv);
this.Header = new WzHeader();
this.Header.Ident = reader.ReadString(4);
this.Header.FSize = reader.ReadUInt64();
this.Header.FStart = reader.ReadUInt32();
this.Header.Copyright = reader.ReadNullTerminatedString();
reader.ReadBytes((int)(Header.FStart - reader.BaseStream.Position));
reader.Header = this.Header;
this.version = reader.ReadInt16();
if (mapleStoryPatchVersion == -1)
{
const short MAX_PATCH_VERSION = 10000; // wont be reached for the forseeable future.
for (int j = 0; j < MAX_PATCH_VERSION; j++)
{
this.mapleStoryPatchVersion = (short)j;
this.versionHash = GetVersionHash(version, mapleStoryPatchVersion);
if (this.versionHash == 0)
{
continue;
}
reader.Hash = this.versionHash;
long position = reader.BaseStream.Position; // save position to rollback to, if should parsing fail from here
WzDirectory testDirectory;
try
{
testDirectory = new WzDirectory(reader, this.name, this.versionHash, this.WzIv, this);
testDirectory.ParseDirectory(lazyParse);
}
catch
{
reader.BaseStream.Position = position;
continue;
}
try
{
List <WzImage> childImages = testDirectory.GetChildImages();
if (childImages.Count == 0) // coincidentally in msea v194 Map001.wz, the hash matches exactly using mapleStoryPatchVersion of 113, and it fails to decrypt later on (probably 1 in a million chance).
{
reader.BaseStream.Position = position; // reset
continue;
}
WzImage testImage = childImages[0];
try
{
reader.BaseStream.Position = testImage.Offset;
byte checkByte = reader.ReadByte();
reader.BaseStream.Position = position;
switch (checkByte)
{
case 0x73:
case 0x1b:
{
WzDirectory directory = new WzDirectory(reader, this.name, this.versionHash, this.WzIv, this);
directory.ParseDirectory(lazyParse);
this.wzDir = directory;
parseErrorMessage = "Success";
return(true);
}
default:
{
Helpers.ErrorLogger.Log(Helpers.ErrorLevel.MissingFeature, "New Wz image header found. checkByte = " + checkByte);
// log or something
break;
}
}
reader.BaseStream.Position = position; // reset
}
catch
{
reader.BaseStream.Position = position; // reset
}
}
finally
{
testDirectory.Dispose();
}
}
parseErrorMessage = "Error with game version hash : The specified game version is incorrect and WzLib was unable to determine the version itself";
}
else
{
this.versionHash = GetVersionHash(version, mapleStoryPatchVersion);
reader.Hash = this.versionHash;
WzDirectory directory = new WzDirectory(reader, this.name, this.versionHash, this.WzIv, this);
directory.ParseDirectory();
this.wzDir = directory;
}
parseErrorMessage = "Success";
return(true);
}
internal void ParseMainWzDirectory(WzFile parentFile = null)
{
if (mPath == null)
{
Console.WriteLine("[Error] Path is null");
return;
}
byte[] key = WzKeyGenerator.GenerateWzKey(mWzIv);
mReader = new WzBinaryReader(File.Open(mPath, FileMode.Open, FileAccess.Read, FileShare.Read), key, true);
Header = new WzHeader {
Ident = mReader.ReadString(4), FSize = mReader.ReadUInt64(), FStart = mReader.ReadUInt32(), Copyright = mReader.ReadNullTerminatedString()
};
int bytesToRead = (int)(Header.FStart - mReader.BaseStream.Position);
if (bytesToRead < 0)
{
throw new Exception("Unable to parse WZ file header");
}
mReader.ReadBytes(bytesToRead);
mReader.Header = Header;
mVersion = mReader.ReadInt16();
if (mFileVersion == -1)
{
for (int j = 0; j < short.MaxValue; j++)
{
mFileVersion = (short)j;
if (parentFile != null)
{
mFileVersion = parentFile.mFileVersion;
}
mVersionHash = GetVersionHash(mVersion, mFileVersion);
if (mVersionHash == 0)
{
continue;
}
mReader.Hash = mVersionHash;
long position = mReader.BaseStream.Position;
WzDirectory testDirectory;
try {
testDirectory = new WzDirectory(mReader, mName, mVersionHash, mWzIv);
testDirectory.ParseDirectory();
} catch {
mReader.BaseStream.Position = position;
continue;
}
foreach (WzImage s in testDirectory.GetChildImages())
{
if (s.Name.IndexOfAny(Path.GetInvalidFileNameChars()) >= 0)
{
testDirectory.Dispose();
throw new Exception("Invalid file names were detected. An invalid encryption may have been used.");
}
}
WzImage testImage = testDirectory.GetChildImages()[0];
try {
mReader.BaseStream.Position = testImage.Offset;
byte checkByte = mReader.ReadByte();
mReader.BaseStream.Position = position;
testDirectory.Dispose();
switch (checkByte)
{
case 0x73:
case 0x1b: {
mHash = mVersionHash;
ParseDirectory(parentFile);
return;
}
}
mReader.BaseStream.Position = position;
} catch {
mReader.BaseStream.Position = position;
}
}
throw new Exception("Error with game version hash : The specified game version is incorrect and WzLib was unable to determine the version itself");
}
mVersionHash = GetVersionHash(mVersion, mFileVersion);
mReader.Hash = mVersionHash;
mHash = mVersionHash;
ParseDirectory(parentFile);
}
internal void ParseMainWzDirectory()
{
if (FilePath == null)
{
Log.LogCritical("Path is null");
return;
}
var reader = new WzBinaryReader(File.Open(FilePath, FileMode.Open, FileAccess.Read, FileShare.Read), _wzIv);
Header = new WzHeader
{
Ident = reader.ReadString(4),
FSize = reader.ReadUInt64(),
FStart = reader.ReadUInt32(),
Copyright = reader.ReadNullTerminatedString()
};
reader.ReadBytes((int)(Header.FStart - reader.BaseStream.Position));
reader.Header = Header;
_version = reader.ReadInt16();
if (FileVersion == -1)
{
for (var j = 0; j < short.MaxValue; j++)
{
FileVersion = (short)j;
_versionHash = GetVersionHash(_version, FileVersion);
if (_versionHash != 0)
{
reader.Hash = _versionHash;
var position = reader.BaseStream.Position;
WzDirectory testDirectory;
try
{
testDirectory = new WzDirectory(reader, Name, _versionHash, _wzIv, this);
testDirectory.ParseDirectory();
}
catch
{
reader.BaseStream.Position = position;
continue;
}
var testImage = testDirectory.GetChildImages()[0];
try
{
reader.BaseStream.Position = testImage.Offset;
var checkByte = reader.ReadByte();
reader.BaseStream.Position = position;
testDirectory.Dispose();
switch (checkByte)
{
case 0x73:
case 0x1b:
{
var directory = new WzDirectory(reader, Name, _versionHash, _wzIv, this);
directory.ParseDirectory();
WzDirectory = directory;
return;
}
}
reader.BaseStream.Position = position;
}
catch
{
reader.BaseStream.Position = position;
}
}
}
throw new Exception(
"Error with game version hash : The specified game version is incorrect and WzLib was unable to determine the version itself");
}
{
_versionHash = GetVersionHash(_version, FileVersion);
reader.Hash = _versionHash;
var directory = new WzDirectory(reader, Name, _versionHash, _wzIv, this);
directory.ParseDirectory();
WzDirectory = directory;
}
}
