public static IEnumerable <PotentialString> FindStrings(ReadOnlyMemory <byte> payload, bool whiteSpace, bool control, int minLength) { using var reader = new GameBinaryReader(payload.GetArray()); for (var i = 0; i < reader.Length; i++) { reader.Position = i; if (!reader.CanRead(sizeof(ushort))) { break; } var offsetPos = reader.Position; var offset = reader.ReadOffset(); if (offset < 0 || offset < offsetPos + sizeof(ushort) || offset > reader.Length - sizeof(char)) { continue; } reader.Position = offset; string str; try { str = reader.ReadString(); GameBinaryReader.Encoding.GetString(GameBinaryReader.Encoding.GetBytes(str)); } catch (Exception e) when(IsStringException(e)) { continue; } if (!whiteSpace && string.IsNullOrWhiteSpace(str)) { continue; } if (minLength != 0 && str.Length < minLength) { continue; } var hasBadChars = str.Any(c => { var cat = char.GetUnicodeCategory(c); return(cat == UnicodeCategory.Control || cat == UnicodeCategory.Format || cat == UnicodeCategory.OtherNotAssigned || cat == UnicodeCategory.PrivateUse || cat == UnicodeCategory.Surrogate); }); if (!control && hasBadChars) { continue; } yield return(new PotentialString(offsetPos, offset, str)); } }
public PacketLogReader(string fileName) { Stream stream = File.OpenRead(fileName); using var reader = new GameBinaryReader(stream, true); if (!reader.ReadBytes(PacketLogEntry.Magic.Count).SequenceEqual(PacketLogEntry.Magic)) { throw new InvalidDataException("Invalid magic number."); } Version = reader.ReadUInt32(); if (Version != PacketLogEntry.Version) { throw new InvalidDataException($"Unknown format version {Version}."); } Region = (Region)reader.ReadByte(); if (!Enum.IsDefined(typeof(Region), Region)) { throw new InvalidDataException($"Unknown region value {Region}."); } var clientVersion = reader.ReadUInt32(); if (!DataCenter.ClientVersions.Values.Contains(clientVersion)) { throw new InvalidDataException($"Unknown client version {clientVersion}."); } GameMessages = new GameMessageTable(clientVersion); SystemMessages = new SystemMessageTable(clientVersion); var serverCount = (int)reader.ReadUInt32(); var servers = new Dictionary <int, ServerInfo>(serverCount); for (var i = 0; i < serverCount; i++) { var id = reader.ReadInt32(); if (servers.ContainsKey(id)) { throw new InvalidDataException($"Duplicate server ID {id}."); } var name = reader.ReadString(); var size = reader.ReadBoolean() ? 16 : 4; var realIPBytes = reader.ReadBytes(size); var realPort = reader.ReadUInt16(); var proxyIPBytes = reader.ReadBytes(size); var proxyPort = reader.ReadUInt16(); IPEndPoint realEP; try { realEP = new IPEndPoint(new IPAddress(realIPBytes), realPort); } catch (ArgumentOutOfRangeException) { throw new InvalidDataException($"Invalid real port {realPort}."); } catch (ArgumentException) { throw new InvalidDataException("Invalid real IP address."); } IPEndPoint proxyEP; try { proxyEP = new IPEndPoint(new IPAddress(proxyIPBytes), proxyPort); } catch (ArgumentOutOfRangeException) { throw new InvalidDataException($"Invalid proxy port {proxyPort}."); } catch (ArgumentException) { throw new InvalidDataException("Invalid proxy IP address."); } servers.Add(id, new ServerInfo(id, name, realEP, proxyEP)); } Servers = servers; CompressionLevel = reader.ReadByte(); _reader = new GameBinaryReader(CompressionLevel != 0 ? new FastDeflateStream(stream, CompressionMode.Decompress) : stream); }
public PacketLogReader(string fileName) { Stream stream = File.OpenRead(fileName); var magic = new byte[PacketLogEntry.Magic.Count]; if (stream.Read(magic, 0, magic.Length) != magic.Length) { throw new EndOfStreamException(); } if (!magic.SequenceEqual(PacketLogEntry.Magic)) { throw new InvalidDataException(); } var level = stream.ReadByte(); if (level == -1) { throw new EndOfStreamException(); } if ((CompressionLevel = (byte)level) != 0) { stream = new DeflateStream(stream, CompressionMode.Decompress); } _reader = new GameBinaryReader(stream); Version = _reader.ReadUInt32(); if (Version != PacketLogEntry.Version) { throw new InvalidDataException(); } Region = (Region)_reader.ReadByte(); if (!Enum.IsDefined(typeof(Region), Region)) { throw new InvalidDataException(); } var clientVersion = _reader.ReadUInt32(); if (!DataCenter.Versions.Values.Contains(clientVersion)) { throw new InvalidDataException(); } GameMessages = new GameMessageTable(clientVersion); SystemMessages = new SystemMessageTable(clientVersion); var serverCount = (int)_reader.ReadUInt32(); if (serverCount < 0) { throw new InvalidDataException(); } var servers = new Dictionary <int, ServerInfo>(serverCount); for (var i = 0; i < serverCount; i++) { var id = _reader.ReadInt32(); if (servers.ContainsKey(id)) { throw new InvalidDataException(); } var name = _reader.ReadString(); var size = _reader.ReadBoolean() ? 16 : 4; var realIPBytes = _reader.ReadBytes(size); var realPort = _reader.ReadUInt16(); var proxyIPBytes = _reader.ReadBytes(size); var proxyPort = _reader.ReadUInt16(); IPEndPoint realEP; IPEndPoint proxyEP; try { realEP = new IPEndPoint(new IPAddress(realIPBytes), realPort); proxyEP = new IPEndPoint(new IPAddress(proxyIPBytes), proxyPort); } catch (ArgumentException) { throw new InvalidDataException(); } servers.Add(id, new ServerInfo(id, name, realEP, proxyEP)); } Servers = servers; }