public void ReadBlock(Stream s)
{
s.Seek((long)((ulong)this.Blocks.Offset), SeekOrigin.Begin);
for (uint num = 0U; num < this.Blocks.Size; num += 1U)
{
BlockEntry blockEntry = new BlockEntry
{
BlockNumber = num,
Offset = Helpers.ReadUInt(s),
Size = Helpers.ReadUInt(s),
PatchId = Helpers.ReadUShort(s),
Flag = Helpers.ReadUShort(s)
};
if ((blockEntry.Flag & 1) != 0)
{
blockEntry.Encrypted = true;
}
if ((blockEntry.Flag & 2) != 0)
{
blockEntry.Compressed = true;
}
if ((blockEntry.Flag & 4) != 0)
{
blockEntry.AltKey = true;
}
blockEntry.Md5Hash = Helpers.ReadByteArray(s, 0x14U);
blockEntry.GcmTag = Helpers.ReadByteArray(s, 0x10U);
this.BlockEntryList.Add(blockEntry);
}
}
private void GetBlockEntries()
{
for (uint num = this.PkgEntry.StartBlock; num < this.PkgEntry.StartBlock + this.PkgEntry.BlockCount; num += 1U)
{
BlockEntry item = this._pkgStream.BlockEntryList[(int)num];
this.BlockEntries.Add(item);
}
}
public byte[] ToBuffer(uint fnumber)
{
PkgEntry pkgEntry = default(PkgEntry);
pkgEntry = this.GetPkgEntryInfo(fnumber);
byte[] array = new byte[pkgEntry.BlockCount * 0x40000U];
using (FileStream fileStream = File.OpenRead(Form1.RecD2PkgDir() + pkgEntry.StartBlockPkg))
{
for (uint num = pkgEntry.StartBlock; num < pkgEntry.StartBlock + pkgEntry.BlockCount; num += 1U)
{
BlockEntry blockEntry = this._pkgStream.BlockEntryList[(int)num];
byte[] array2 = new byte[blockEntry.Size];
fileStream.Seek((long)((ulong)blockEntry.Offset), SeekOrigin.Begin);
fileStream.Read(array2, 0, (int)blockEntry.Size);
if (blockEntry.Encrypted)
{
if (!blockEntry.AltKey)
{
array2 = this.DecryptBuffer(array2, this._pkgStream.Nonce, blockEntry.GcmTag, 1);
}
else
{
array2 = this.DecryptBuffer(array2, this._pkgStream.Nonce, blockEntry.GcmTag, 2);
}
}
uint num2 = blockEntry.Size;
if (blockEntry.Compressed)
{
array2 = this.DecompressBuffer(array2);
num2 = 0x40000U;
}
Array.Copy(array2, 0L, array, (long)((ulong)((num - pkgEntry.StartBlock) * 0x40000U)), (long)((ulong)num2));
}
fileStream.Close();
}
byte[] array3 = new byte[pkgEntry.EntrySize];
Array.Copy(array, (long)((ulong)pkgEntry.InBlockOffset), array3, 0L, (long)((ulong)pkgEntry.EntrySize));
return(array3);
}
public void ReadEntries(Stream s)
{
s.Seek((long)((ulong)this.Entries.Offset), SeekOrigin.Begin);
for (uint num = 0U; num < this.Entries.Size; num += 1U)
{
PkgEntry pkgEntry = default(PkgEntry);
pkgEntry.EntryNumber = num;
pkgEntry.EntryA = Helpers.ReadUInt(s);
pkgEntry.TypeA = Helpers.ReadUInt(s);
pkgEntry.EntryB = Helpers.ReadULong(s);
pkgEntry.StartBlock = (uint)(pkgEntry.EntryB & 0x3FFFUL);
pkgEntry.StartBlockOffset = this.Blocks.Offset + pkgEntry.StartBlock * 0x30U;
int index = this._pkgListEntries.FindIndex(new Predicate <PkgListEntry>(this.ReadEntries19));
PkgListEntry pkgListEntry = this._pkgListEntries[index];
BlockEntry blockEntry = this.BlockEntryList[(int)pkgEntry.StartBlock];
pkgEntry.StartBlockPkg = string.Concat(new object[]
{
pkgListEntry.Basename,
"_",
blockEntry.PatchId,
".pkg"
});
pkgEntry.InBlockOffset = (uint)((pkgEntry.EntryB >> 0xE & 0x3FFFUL) * 0x10UL);
pkgEntry.EntrySize = (uint)(pkgEntry.EntryB >> 0x1C & 0x3FFFFFFFUL);
pkgEntry.BlockCount = this.CalcBlockCount(pkgEntry.InBlockOffset, pkgEntry.EntrySize);
pkgEntry.UnkEntryInfo = (uint)(pkgEntry.EntryB >> 0x3A & 0x3FUL);
pkgEntry.Filename = string.Concat(new string[]
{
this.Header.PackageId.ToString("X4"),
"_",
pkgEntry.EntryNumber.ToString("X4"),
"_",
this.Header.LangId.ToString("X2")
});
pkgEntry.FileType = FileClassification.FileClassify(pkgEntry.EntryA, pkgEntry.TypeA);
this.PkgEntryList.Add(pkgEntry);
}
}