public override void Write(Stream output, IDirectory inputDirectory)
{
const uint xorMask1 = 0x41441043;
const uint xorMask2 = 0x11C22050;
const uint xorMask3 = 0xD05608C3;
const uint xorMask4 = 0x532C7319;
const int headerSize = 32;
int shift = (Flags & 0x800) > 0 ? 12 : 10;
int alignment = 1 << shift;
BinaryWriter writer = new BinaryWriter(output, Encoding.Default, true);
long headerPosition = output.Position;
output.Skip(headerSize);
long tableOffset = output.Position;
output.Skip(8 * Entries.Count);
//long unknownTableOffset = output.Position;
//output.Skip(16 * UnknownEntries.Count);
output.AlignWrite(alignment, 0x00);
long dataOffset = output.Position;
ulong[] sections = new ulong[Entries.Count];
for (int i = 0; i < Entries.Count; i++)
{
QarEntry entry = Entries[i];
entry.CalculateHash();
ulong section = (ulong)(output.Position >> shift) << 40
| (entry.Hash & 0xFF) << 32
| entry.Hash >> 32 & 0xFFFFFFFFFF;
sections[i] = section;
entry.Write(output, inputDirectory);
output.AlignWrite(alignment, 0x00);
}
long endPosition = output.Position;
uint endPositionHead = (uint)(endPosition >> shift);
output.Position = headerPosition;
writer.Write(QarMagicNumber); // SQAR
writer.Write(Flags ^ xorMask1);
writer.Write((uint)Entries.Count ^ xorMask2);
writer.Write(xorMask3); // unknown count (not saved in the xml and output directory)
writer.Write(endPositionHead ^ xorMask4);
writer.Write((uint)dataOffset ^ xorMask1);
writer.Write(1 ^ xorMask1);
writer.Write(0 ^ xorMask2);
output.Position = tableOffset;
byte[] encryptedSectionsData = EncryptSections(sections);
writer.Write(encryptedSectionsData);
output.Position = endPosition;
}
public override void Read(Stream input)
{
const uint xorMask1 = 0x41441043;
const uint xorMask2 = 0x11C22050;
const uint xorMask3 = 0xD05608C3;
const uint xorMask4 = 0x532C7319;
BinaryReader reader = new BinaryReader(input, Encoding.Default, true);
uint magicNumber = reader.ReadUInt32(); // SQAR
Flags = reader.ReadUInt32() ^ xorMask1;
uint fileCount = reader.ReadUInt32() ^ xorMask2;
uint unknownCount = reader.ReadUInt32() ^ xorMask3;
uint blockFileEnd = reader.ReadUInt32() ^ xorMask4;
uint offsetFirstFile = reader.ReadUInt32() ^ xorMask1;
Version = reader.ReadUInt32() ^ xorMask1; // 1 2
uint unknown2 = reader.ReadUInt32() ^ xorMask2; // 0
// Determines the alignment block size.
int blockShiftBits = (Flags & 0x800) > 0 ? 12 : 10;
byte[] sectionsData = reader.ReadBytes((int)(8 * fileCount));
ulong[] sections = DecryptSectionList(fileCount, sectionsData, Version);
byte[] unknownSectionData = reader.ReadBytes((int)(16 * unknownCount));
List <QarEntry> entries = new List <QarEntry>();
foreach (var section in sections)
{
ulong sectionBlock = section >> 40;
ulong hash = section & 0xFFFFFFFFFF;
ulong sectionOffset = sectionBlock << blockShiftBits;
reader.BaseStream.Position = (long)sectionOffset;
var entry = new QarEntry();
entry.Read(reader, Version);
entries.Add(entry);
}
Entries = entries;
}
public override void Read(Stream input)
{
const uint xorMask1 = 0x41441043;
const uint xorMask2 = 0x11C22050;
const uint xorMask3 = 0xD05608C3;
const uint xorMask4 = 0x532C7319;
BinaryReader reader = new BinaryReader(input, Encoding.Default, true);
uint magicNumber = reader.ReadUInt32(); // SQAR
Flags = reader.ReadUInt32() ^ xorMask1;
uint fileCount = reader.ReadUInt32() ^ xorMask2;
uint unknownCount = reader.ReadUInt32() ^ xorMask3;
uint blockFileEnd = reader.ReadUInt32() ^ xorMask4;
uint offsetFirstFile = reader.ReadUInt32() ^ xorMask1;
uint unknown1 = reader.ReadUInt32() ^ xorMask1; // 1
uint unknown2 = reader.ReadUInt32() ^ xorMask2; // 0
// Determines the alignment block size.
int blockShiftBits = (Flags & 0x800) > 0 ? 12 : 10;
byte[] sectionsData = reader.ReadBytes((int)(8 * fileCount));
ulong[] sections = DecryptSectionList(fileCount, sectionsData);
byte[] unknownSectionData = reader.ReadBytes((int)(16 * unknownCount));
List<QarEntry> entries = new List<QarEntry>();
foreach (var section in sections)
{
ulong sectionBlock = section >> 40;
ulong hash = section & 0xFFFFFFFFFF;
ulong sectionOffset = sectionBlock << blockShiftBits;
reader.BaseStream.Position = (long)sectionOffset;
var entry = new QarEntry();
entry.Read(reader);
entries.Add(entry);
}
Entries = entries;
}