C# Inflater.Inflate方法代码示例

		protected override int Inflate(int pos, byte[] dstbuf, int dstoff, Inflater inf)
        {
            while (!inf.IsFinished)
            {
                if (inf.IsNeedingInput)
                {
                    inf.SetInput(_array, pos, _array.Length - pos);
                    break;
                }
                dstoff += inf.Inflate(dstbuf, dstoff, dstbuf.Length - dstoff);
            }
            while (!inf.IsFinished && !inf.IsNeedingInput)
                dstoff += inf.Inflate(dstbuf, dstoff, dstbuf.Length - dstoff);
            return dstoff;
        }

 internal override int inflate(int pos, byte[] b, int o, Inflater inf)
 {
     while (!inf.IsFinished)
     {
         if (inf.IsNeedingInput)
         {
             inf.SetInput(array, pos, array.Length - pos);
             break;
         }
         o += inf.Inflate(b, o, b.Length - o);
     }
     while (!inf.IsFinished && !inf.IsNeedingInput)
         o += inf.Inflate(b, o, b.Length - o);
     return o;
 }

		/// <summary>
		/// Performs inflate decompression on the given data.
		/// </summary>
		/// <param name="input">the data to decompress</param>
		/// <param name="output">the decompressed data</param>
		public static void DecompressZLib(byte[] input, byte[] output)
		{
			Inflater item = new Inflater();

			item.SetInput(input, 0, input.Length);
			item.Inflate(output, 0, output.Length);
		}

		byte[] Decrypt(byte[] encryptedData) {
			var reader = new BinaryReader(new MemoryStream(encryptedData));
			int headerMagic = reader.ReadInt32();
			if (headerMagic == 0x04034B50)
				throw new NotImplementedException("Not implemented yet since I haven't seen anyone use it.");

			byte encryption = (byte)(headerMagic >> 24);
			if ((headerMagic & 0x00FFFFFF) != 0x007D7A7B)	// Check if "{z}"
				throw new ApplicationException(string.Format("Invalid SA header magic 0x{0:X8}", headerMagic));

			switch (encryption) {
			case 1:
				int totalInflatedLength = reader.ReadInt32();
				if (totalInflatedLength < 0)
					throw new ApplicationException("Invalid length");
				var inflatedBytes = new byte[totalInflatedLength];
				int partInflatedLength;
				for (int inflateOffset = 0; inflateOffset < totalInflatedLength; inflateOffset += partInflatedLength) {
					int partLength = reader.ReadInt32();
					partInflatedLength = reader.ReadInt32();
					if (partLength < 0 || partInflatedLength < 0)
						throw new ApplicationException("Invalid length");
					var inflater = new Inflater(true);
					inflater.SetInput(encryptedData, checked((int)reader.BaseStream.Position), partLength);
					reader.BaseStream.Seek(partLength, SeekOrigin.Current);
					int realInflatedLen = inflater.Inflate(inflatedBytes, inflateOffset, inflatedBytes.Length - inflateOffset);
					if (realInflatedLen != partInflatedLength)
						throw new ApplicationException("Could not inflate");
				}
				return inflatedBytes;

			case 2:
				if (resourceDecrypterInfo.DES_Key == null || resourceDecrypterInfo.DES_IV == null)
					throw new ApplicationException("DES key / iv have not been set yet");
				using (var provider = new DESCryptoServiceProvider()) {
					provider.Key = resourceDecrypterInfo.DES_Key;
					provider.IV  = resourceDecrypterInfo.DES_IV;
					using (var transform = provider.CreateDecryptor()) {
						return Decrypt(transform.TransformFinalBlock(encryptedData, 4, encryptedData.Length - 4));
					}
				}

			case 3:
				if (resourceDecrypterInfo.AES_Key == null || resourceDecrypterInfo.AES_IV == null)
					throw new ApplicationException("AES key / iv have not been set yet");
				using (var provider = new RijndaelManaged()) {
					provider.Key = resourceDecrypterInfo.AES_Key;
					provider.IV  = resourceDecrypterInfo.AES_IV;
					using (var transform = provider.CreateDecryptor()) {
						return Decrypt(transform.TransformFinalBlock(encryptedData, 4, encryptedData.Length - 4));
					}
				}

			default:
				throw new ApplicationException(string.Format("Unknown encryption type 0x{0:X2}", encryption));
			}
		}

 	protected override int Inflate(int pos, byte[] dstbuf, int dstoff, Inflater inf)
     {
         var tmp = new byte[512];
         var s = _stream;
         s.Position=pos;
         while ((s.Length-s.Position) > 0 && !inf.IsFinished)
         {
             if (inf.IsNeedingInput)
             {
                 var n = (int)Math.Min((s.Length - s.Position), tmp.Length);
                 s.Read(tmp, 0, n);
                 inf.SetInput(tmp, 0, n);
             }
             dstoff += inf.Inflate(dstbuf, dstoff, dstbuf.Length - dstoff);
         }
         while (!inf.IsFinished && !inf.IsNeedingInput)
             dstoff += inf.Inflate(dstbuf, dstoff, dstbuf.Length - dstoff);
         return dstoff;
     }

        public static byte[] DecompressDeflate(byte[] data, int decompSize)
        {
            var decompData = new byte[decompSize];

            var inflater = new Inflater(true);
            inflater.SetInput(data);
            inflater.Inflate(decompData);

            return decompData;
        }

        public static byte[] DecompressAlphaValues(byte[] alphaValues, int width, int height)
        {
            var data = new byte[width * height];
            var inflater = new Inflater();
            inflater.SetInput(alphaValues);
            if (inflater.Inflate(data) != data.Length)
                throw new ArgumentException("Alpha values are not in valid compressed format!");

            return data;
        }

 public static void HandleReqUpdateAccountData(Packet packet)
 {
     packet.ReadEnum<AccountDataType>("Type");
     packet.ReadTime("Time");
     int inflatedSize = packet.ReadInt32("Size");
     byte[] compressedData = packet.ReadBytes((int)packet.GetLength() - (int)packet.GetPosition());
     byte[] data = new byte[inflatedSize];
     var inflater = new Inflater();
     inflater.SetInput(compressedData, 0, compressedData.Length);
     inflater.Inflate(data, 0, inflatedSize);
     Console.WriteLine("Data: {0}", encoder.GetString(data));
 }

 public static byte[] Decompress(byte[] compressed, uint unzippedSize)
 {
     byte[] result = new byte[unzippedSize];
     Inflater inf = new Inflater();
     inf.SetInput(compressed);
     int error = inf.Inflate(result, 0, (int)unzippedSize);
     if (error == 0)
     {
         throw new FileLoadException("The a section of the swf file could not be decompressed.");
     }
     return result;
 }

 public CodecInputStream(Stream baseStream)
 {
     BinaryReader br = new BinaryReader(baseStream);
     decompressedSize = br.ReadInt32();
     compressedSize = br.ReadInt32();
     byte[] inbuf = new byte[compressedSize];
     baseStream.Read(inbuf, 0, compressedSize);
     Inflater inflater = new Inflater(false);
     inflater.SetInput(inbuf);
     byte[] buf = new byte[decompressedSize];
     inflater.Inflate(buf);
     this.iis = new MemoryStream(buf);
 }

        public static byte[] Decompress(byte[] input, int uncompressedLength, bool header = true)
        {
            Contract.Requires(input != null);
            Contract.Requires(uncompressedLength >= 0);
            Contract.Ensures(Contract.Result<byte[]>() != null);
            Contract.Ensures(Contract.Result<byte[]>().Length == uncompressedLength);

            var inflater = new Inflater(!header);
            var output = new byte[uncompressedLength];

            inflater.SetInput(input, 0, input.Length);
            inflater.Inflate(output);

            return output;
        }

		public static byte[] Decompress(byte[] content, int offset, int count)
		{
			//return content;
			Inflater decompressor = new Inflater();
			decompressor.SetInput(content, offset, count);

			using (MemoryStream bos = new MemoryStream(content.Length))
			{
				var buf = new byte[1024];
				while (!decompressor.IsFinished)
				{
					int n = decompressor.Inflate(buf);
					bos.Write(buf, 0, n);
				}
				return bos.ToArray();
			}
		}

 public Stream Open(Stream stream)
 {
     stream.Seek(DataOffset, SeekOrigin.Begin);
     byte[] data;
     if (DataCompression == 0)
     {
         data = stream.ReadBytes(DataSize);
     }
     else
     {
         var dataBuffer = stream.ReadBytes(DataCompressedSize);
         var inflater = new Inflater(false);
         inflater.SetInput(dataBuffer);
         data = new Byte[DataSize];
         inflater.Inflate(data);
     }
     return new MemoryStream(data);
 }

        public byte[] Uncompress(byte[] input)
        {
            Inflater decompressor = new Inflater();
            decompressor.SetInput(input);

            // Create an expandable byte array to hold the decompressed data
            MemoryStream bos = new MemoryStream(input.Length);

            // Decompress the data
            byte[] buf = new byte[1024];
            while (!decompressor.IsFinished)
            {
                int count = decompressor.Inflate(buf);
                bos.Write(buf, 0, count);
            }

            // Get the decompressed data
            return bos.ToArray();
        }

		public byte[] Unpack() {
			if (peImage.PEImage.Win32Resources == null)
				return null;
			var dataEntry = peImage.PEImage.Win32Resources.Find(10, "__", 0);
			if (dataEntry == null)
				return null;

			var encryptedData = dataEntry.Data.ReadAllBytes();

			var keyData = GetKeyData();
			if (keyData == null)
				return null;
			var decrypter = new NativeFileDecrypter(keyData);
			decrypter.Decrypt(encryptedData, 0, encryptedData.Length);

			byte[] inflatedData;
			if (isNet1x)
				inflatedData = DeobUtils.Inflate(encryptedData, false);
			else {
				int inflatedSize = BitConverter.ToInt32(encryptedData, 0);
				inflatedData = new byte[inflatedSize];
				var inflater = new Inflater(false);
				inflater.SetInput(encryptedData, 4, encryptedData.Length - 4);
				int count = inflater.Inflate(inflatedData);
				if (count != inflatedSize)
					return null;
			}

			// CLR 1.x or DNR v4.0 - v4.4
			if (BitConverter.ToInt16(inflatedData, 0) == 0x5A4D)
				return inflatedData;

			// DNR v4.5
			if (BitConverter.ToInt16(inflatedData, loaderHeaderSizeV45) == 0x5A4D)
				return UnpackLoader(inflatedData);

			return null;
		}