private static Romfs_InfoHeader GetRomfsInfoHeaderFromBytes(byte[] headerBytes, uint bodyOffset)
{
Romfs_InfoHeader infoHeader = new Romfs_InfoHeader();
infoHeader.HeaderLength = BitConverter.ToUInt32(headerBytes, 0x00);
infoHeader.Sections = new Romfs_SectionHeader[4];
for (int i = 0; i < 4; i++)
{
infoHeader.Sections[i] = new Romfs_SectionHeader();
infoHeader.Sections[i].Offset = BitConverter.ToUInt32(headerBytes, 0x04 + (i * 0x08)) + bodyOffset;
infoHeader.Sections[i].Size = BitConverter.ToUInt32(headerBytes, 0x08 + (i * 0x08));
}
infoHeader.DataOffset = BitConverter.ToUInt32(headerBytes, 0x24) + bodyOffset;
return(infoHeader);
}
public void ExtractRomFS(string outputDirectory, RichTextBox TB_Progress = null, ProgressBar PB_Show = null)
{
byte[] ivfcHeaderBytes = new byte[0x5C];
using (FileStream file = new FileStream(FileName, FileMode.Open, FileAccess.Read))
{
file.Read(ivfcHeaderBytes, 0, ivfcHeaderBytes.Length);
}
IVFCInfo ivfc = GetIVFCInfoFromBytes(ivfcHeaderBytes);
ulong romfsDataOffset = Align(ivfc.Levels[0].HashOffset + ivfc.MasterHashSize, ivfc.Levels[2].BlockSize);
byte[] romfsInfoHeaderBytes = new byte[0x28];
using (FileStream file = new FileStream(FileName, FileMode.Open, FileAccess.Read))
{
file.Seek(Convert.ToInt64(romfsDataOffset), SeekOrigin.Begin);
file.Read(romfsInfoHeaderBytes, 0, romfsInfoHeaderBytes.Length);
}
Romfs_InfoHeader infoHeader = GetRomfsInfoHeaderFromBytes(romfsInfoHeaderBytes, Convert.ToUInt32(romfsDataOffset));
byte[] directoryMetadataBlock = new byte[infoHeader.Sections[1].Size];
byte[] fileMetadataBlock = new byte[infoHeader.Sections[3].Size];
using (FileStream file = new FileStream(FileName, FileMode.Open, FileAccess.Read))
{
file.Seek(Convert.ToInt64(infoHeader.Sections[1].Offset), SeekOrigin.Begin);
file.Read(directoryMetadataBlock, 0, directoryMetadataBlock.Length);
file.Seek(Convert.ToInt64(infoHeader.Sections[3].Offset), SeekOrigin.Begin);
file.Read(fileMetadataBlock, 0, fileMetadataBlock.Length);
}
if (!Directory.Exists(outputDirectory))
{
Directory.CreateDirectory(outputDirectory);
}
VisitDirectory(0, outputDirectory, directoryMetadataBlock, fileMetadataBlock, infoHeader.DataOffset, TB_Progress, PB_Show);
}
