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Updated FARC for UE4 and added comments about encryption

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This commit is contained in:
Michael Becker 2014-06-07 23:46:07 -04:00
parent 69d93c2e61
commit f6eec22351
1 changed files with 60 additions and 40 deletions
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100
CSharp/Plugins/UniversalEditor.Plugins.FileSystem/DataFormats/FileSystem/FARC/FARCDataFormat.cs
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@ -1,12 +1,32 @@
using System;
using System.Collections.Generic;
using System.Text;
using UniversalEditor.IO;
using UniversalEditor.ObjectModels.FileSystem;
namespace UniversalEditor.DataFormats.FileSystem.FArC
{
public partial class FARCDataFormat : DataFormat
{
// this was mentioned on
// http://forum.xentax.com/viewtopic.php?f=10&t=9639
// could this mean anything? -v-
// PS : for each files same header (0x10 bytes - maybe key for decrypt??) - 6D4A249C8529DE62C8E3893931C9E0BC
// The files from Project Diva F are the same way, except they have a different header -- 69173ED8F50714439F6240AA7466C37A
// EDAT v4
// key
// 6D4BF3D7245DB294B6C3F9E32AA57E79
// kgen key
// D1DF87B5C1471B360ACE21315A339C06
// (it's not keys for FARC)
// I guess it's like AES / XOR because all Sony FS use this.
// EBOOT - AES
// PSARC - AES
// PGD - AES + XOR
private struct FileEntry
{
public string name;
@ -38,23 +58,23 @@ namespace UniversalEditor.DataFormats.FileSystem.FArC
FileSystemObjectModel fsom = (objectModel as FileSystemObjectModel);
if (fsom == null) return;
IO.BinaryReader br = base.Stream.BinaryReader;
br.Endianness = IO.Endianness.BigEndian;
string FArC = br.ReadFixedLengthString(4);
Reader reader = base.Accessor.Reader;
reader.Endianness = IO.Endianness.BigEndian;
string FArC = reader.ReadFixedLengthString(4);
if (!(FArC == "FArC" || FArC == "FArc" || FArC == "FARC")) throw new InvalidDataFormatException();
int directorySize = br.ReadInt32();
int dummy = br.ReadInt32();
int directorySize = reader.ReadInt32();
int dummy = reader.ReadInt32();
if (FArC == "FArC")
{
while (br.BaseStream.Position < directorySize)
while (reader.Accessor.Position < directorySize)
{
FileEntry entry = new FileEntry();
entry.name = br.ReadNullTerminatedString();
entry.offset = br.ReadInt32();
entry.compressedSize = br.ReadInt32();
entry.decompressedSize = br.ReadInt32();
entry.name = reader.ReadNullTerminatedString();
entry.offset = reader.ReadInt32();
entry.compressedSize = reader.ReadInt32();
entry.decompressedSize = reader.ReadInt32();
File file = fsom.AddFile(entry.name);
if (entry.decompressedSize == 0)
@ -72,12 +92,12 @@ namespace UniversalEditor.DataFormats.FileSystem.FArC
}
else if (FArC == "FArc")
{
while (br.BaseStream.Position - 12 < directorySize - 4)
while (reader.Accessor.Position - 12 < directorySize - 4)
{
FileEntry entry = new FileEntry();
entry.name = br.ReadNullTerminatedString();
entry.offset = br.ReadInt32();
entry.compressedSize = br.ReadInt32();
entry.name = reader.ReadNullTerminatedString();
entry.offset = reader.ReadInt32();
entry.compressedSize = reader.ReadInt32();
File file = fsom.AddFile(entry.name);
@ -90,22 +110,22 @@ namespace UniversalEditor.DataFormats.FileSystem.FArC
}
else if (FArC == "FARC")
{
uint flag0 = br.ReadUInt32();
uint flag1 = br.ReadUInt32();
uint flag2 = br.ReadUInt32();
uint flag3 = br.ReadUInt32();
uint flag0 = reader.ReadUInt32();
uint flag1 = reader.ReadUInt32();
uint flag2 = reader.ReadUInt32();
uint flag3 = reader.ReadUInt32();
while (br.BaseStream.Position < directorySize + 8)
while (reader.Accessor.Position < directorySize + 8)
{
FileEntry entry = new FileEntry();
entry.name = br.ReadNullTerminatedString();
entry.offset = br.ReadInt32();
entry.compressedSize = br.ReadInt32();
entry.name = reader.ReadNullTerminatedString();
entry.offset = reader.ReadInt32();
entry.compressedSize = reader.ReadInt32();
File file = fsom.AddFile(entry.name);
file.Size = entry.compressedSize;
entry.decompressedSize = br.ReadInt32();
entry.decompressedSize = reader.ReadInt32();
file.Properties.Add("FileEntry", entry);
file.DataRequest += file_DataRequest;
@ -120,20 +140,20 @@ namespace UniversalEditor.DataFormats.FileSystem.FArC
private void file_DataRequest(object sender, DataRequestEventArgs e)
{
File file = (sender as File);
IO.BinaryReader br = base.Stream.BinaryReader;
Reader reader = (Reader)file.Properties["reader"];
FileEntry entry = (FileEntry)file.Properties["FileEntry"];
br.BaseStream.Position = entry.offset;
reader.Accessor.Position = entry.offset;
byte[] decompressedData = new byte[entry.decompressedSize];
if (entry.decompressedSize > 0)
{
byte[] compressedData = br.ReadBytes(entry.compressedSize);
byte[] compressedData = reader.ReadBytes(entry.compressedSize);
if (entry.compressedSize != entry.decompressedSize)
{
try
{
decompressedData = UniversalEditor.Compression.CompressionStream.Decompress(Compression.CompressionMethod.Gzip, compressedData);
decompressedData = UniversalEditor.Compression.CompressionModule.FromKnownCompressionMethod(Compression.CompressionMethod.Gzip).Decompress(compressedData);
}
catch (Exception ex)
{
@ -148,7 +168,7 @@ namespace UniversalEditor.DataFormats.FileSystem.FArC
}
else
{
decompressedData = br.ReadBytes(entry.compressedSize);
decompressedData = reader.ReadBytes(entry.compressedSize);
}
e.Data = decompressedData;
}
@ -158,8 +178,8 @@ namespace UniversalEditor.DataFormats.FileSystem.FArC
FileSystemObjectModel fsom = (objectModel as FileSystemObjectModel);
if (fsom == null) return;
IO.BinaryWriter bw = base.Stream.BinaryWriter;
bw.Endianness = IO.Endianness.BigEndian;
Writer writer = base.Accessor.Writer;
writer.Endianness = IO.Endianness.BigEndian;
int ioffset = 12, isize = 0;
List<int> FileDecompressedDataLength = new List<int>();
@ -170,38 +190,38 @@ namespace UniversalEditor.DataFormats.FileSystem.FArC
ioffset += (file.Name.Length + 1) + 12;
byte[] decompressedData = file.GetDataAsByteArray();
byte[] compressedData = UniversalEditor.Compression.CompressionStream.Compress(Compression.CompressionMethod.Gzip, decompressedData);
byte[] compressedData = UniversalEditor.Compression.CompressionModule.FromKnownCompressionMethod(Compression.CompressionMethod.Gzip).Compress(decompressedData);
FileCompressedData.Add(compressedData);
isize += ioffset + compressedData.Length;
}
bw.WriteFixedLengthString("FArC");
writer.WriteFixedLengthString("FArC");
int filesize = isize;
bw.Write(filesize);
writer.WriteInt32(filesize);
int dummy = 0;
bw.Write(dummy);
writer.WriteInt32(dummy);
// ioffset = 12;
int i = 0;
foreach (File file in fsom.Files)
{
bw.WriteNullTerminatedString(file.Name);
bw.Write(ioffset);
writer.WriteNullTerminatedString(file.Name);
writer.WriteInt32(ioffset);
byte[] compressedData = FileCompressedData[i];
bw.Write(compressedData.Length);
bw.Write((int)file.Size);
writer.WriteInt32(compressedData.Length);
writer.WriteInt32((int)file.Size);
ioffset += compressedData.Length;
i++;
}
foreach (byte[] data in FileCompressedData)
{
bw.Write(data);
writer.WriteBytes(data);
}
bw.Flush();
writer.Flush();
}
}
}