void IZiPatchCommand.Handle(BinaryReader reader, long commandSize, ZiPatchExecute execute)
{
reader.BaseStream.Position += 2;
PatchVersion = reader.ReadByte();
reader.BaseStream.Position++;
PatchType = Encoding.ASCII.GetString(reader.ReadBytes(4));
reader.BaseStream.Position += 0xEC;
}
private static void InstallPatch(string path, string gamePath, string repository)
{
var execute = new ZiPatchExecute(gamePath, repository);
try
{
execute.Execute(path);
}
catch (Exception e)
{
Log.Error(e, "Failed to execute ZiPatch.");
throw;
}
}
private (ulong OutputOffset, ulong OutputLength, string path) ReadFileCommandInfo(BinaryReader reader)
{
var outputOffset = reader.ReadUInt64BE();
var outputLength = reader.ReadUInt64BE();
var fileNameLength = reader.ReadUInt32BE();
var expansionId = reader.ReadUInt16BE();
reader.BaseStream.Position += 2;
var path = $"{ZiPatchExecute.ResolveExId((byte) expansionId)}\\{Encoding.ASCII.GetString(reader.ReadBytes((int) fileNameLength))}";
// Cut null byte from end of path
path = path.Substring(0, path.Length - 1);
//Log.Verbose(" -> SQPK FILECMDINFO: outputOffset:{0} outputLen:{1} {2}", outputOffset, outputLength, path);
return(outputOffset, outputLength, path);
}
public void Handle(BinaryReader reader, long commandSize, ZiPatchExecute execute)
{
if (commandSize > MAX_HEADER_SIZE)
{
Log.Debug($"Detected file header with size > {MAX_HEADER_SIZE}");
throw new ArgumentException("Patch file is invalid or not ZiPatch.");
}
reader.ReadBytes(2);
PatchVersion = reader.ReadByte();
reader.ReadByte();
PatchType = Encoding.ASCII.GetString(reader.ReadBytes(4));
//reader.BaseStream.Position += 0xEC;
reader.ReadBytes(0xEC);
}
void IZiPatchCommand.Handle(BinaryReader reader, long commandSize, ZiPatchExecute execute)
{
var sqpkCommandSize = reader.ReadUInt32BE();
var sqpkCommandType = (char)reader.ReadByte();
switch (sqpkCommandType)
{
case 'A':
{
CommandType = SqPackCommandType.Add;
reader.BaseStream.Position += 3;
var file = execute.ResolveSqPackFile(reader);
var blockInfo = ReadBlockInfo(reader);
var data = reader.ReadBytes((int)(blockInfo.BlockCount * SQPK_FILE_BLOCK_SIZE));
//data.Dump();
if (!ZiPatchExecute.IsDryRun)
{
file.Write(data, (int)blockInfo.BlockOffset, data.Length);
}
file.Close();
Log.Verbose(" -> SQPK ADD command executed for offset {0} with data of {1}", blockInfo.BlockOffset.ToString("X"), data.Length.ToString("X"));
break;
}
case 'D':
{
CommandType = SqPackCommandType.Delete;
reader.BaseStream.Position += 3;
var file = execute.ResolveSqPackFile(reader);
var blockInfo = ReadBlockInfo(reader);
file.Close();
break;
}
case 'E':
{
CommandType = SqPackCommandType.Expand;
var operation = reader.ReadByte();
reader.BaseStream.Position += 2; // Skipped
var file = execute.ResolveSqPackFile(reader);
var blockInfo = ReadBlockInfo(reader);
reader.BaseStream.Position++; // Skipped
file.Close();
break;
}
// HEADER command - Overwrite the header of the specified SqPack DAT file with the 1024 byte payload
case 'H':
{
CommandType = SqPackCommandType.Header;
var targetType = (char)reader.ReadByte();
var headerType = (char)reader.ReadByte();
reader.BaseStream.Position++; // Skipped
var file = execute.ResolveSqPackFile(reader);
var headerData = reader.ReadBytes(1024);
headerData.Dump();
if (targetType == 'D')
{
var offset = 0;
if (sqpkCommandSize != 0x410)
{
throw new Exception("HEADER command has invalid size: " + sqpkCommandSize);
}
if (headerType != 'V')
{
if (headerType != 'D')
{
throw new Exception("Unknown HEADER headerType: " + headerType);
}
offset = 0x400;
}
if (!ZiPatchExecute.IsDryRun)
{
file.Write(headerData, offset, headerData.Length);
}
file.Close();
Log.Verbose(" -> SQPK HEADER command executed for offset {0}", offset.ToString("X"));
}
else
{
throw new NotImplementedException("Unimplemented HEADER target type: " + targetType);
}
break;
}
// FILE command - Extract file data at specified offset
case 'F':
CommandType = SqPackCommandType.File;
reader.BaseStream.Position += 3;
var fileCommandInfo = ReadFileCommandInfo(reader);
HandleFileWrite(reader, null, fileCommandInfo.OutputOffset, fileCommandInfo.OutputLength);
break;
// PATCHINFO? - Unknown
case 'T':
CommandType = SqPackCommandType.PatchInfo;
reader.BaseStream.Position += commandSize - 5;
break;
// INDEX -
case 'I':
CommandType = SqPackCommandType.Index;
reader.BaseStream.Position += commandSize - 5;
break;
// Not quite sure?
case 'X':
CommandType = SqPackCommandType.Unknown;
reader.BaseStream.Position += commandSize - 5;
break;
default:
throw new NotImplementedException("Unimplemented ZiPatch SQPK subcommand type: " + sqpkCommandType);
}
Log.Verbose(" -> SQPK: type:{0}", CommandType);
}
public ZiPatchCommandPack(BinaryReader reader, ZiPatchExecute execute)
{
_execute = execute;
Read(reader);
}
