trunk/java/com/l2jserver/util/network/BaseRecievePacket.java

@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2004-2014 L2J Server
+ * 
+ * This file is part of L2J Server.
+ * 
+ * L2J Server is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * L2J Server is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.l2jserver.util.network;
+
+import java.util.logging.Logger;
+
+/**
+ * This class ...
+ * @version $Revision: 1.2.4.1 $ $Date: 2005/03/27 15:30:12 $
+ */
+public abstract class BaseRecievePacket
+{
+	private static final Logger _log = Logger.getLogger(BaseRecievePacket.class.getName());
+	
+	private final byte[] _decrypt;
+	private int _off;
+	
+	public BaseRecievePacket(byte[] decrypt)
+	{
+		_decrypt = decrypt;
+		_off = 1; // skip packet type id
+	}
+	
+	public int readD()
+	{
+		int result = _decrypt[_off++] & 0xff;
+		result |= (_decrypt[_off++] << 8) & 0xff00;
+		result |= (_decrypt[_off++] << 0x10) & 0xff0000;
+		result |= (_decrypt[_off++] << 0x18) & 0xff000000;
+		return result;
+	}
+	
+	public int readC()
+	{
+		int result = _decrypt[_off++] & 0xff;
+		return result;
+	}
+	
+	public int readH()
+	{
+		int result = _decrypt[_off++] & 0xff;
+		result |= (_decrypt[_off++] << 8) & 0xff00;
+		return result;
+	}
+	
+	public double readF()
+	{
+		long result = _decrypt[_off++] & 0xff;
+		result |= (_decrypt[_off++] & 0xffL) << 8L;
+		result |= (_decrypt[_off++] & 0xffL) << 16L;
+		result |= (_decrypt[_off++] & 0xffL) << 24L;
+		result |= (_decrypt[_off++] & 0xffL) << 32L;
+		result |= (_decrypt[_off++] & 0xffL) << 40L;
+		result |= (_decrypt[_off++] & 0xffL) << 48L;
+		result |= (_decrypt[_off++] & 0xffL) << 56L;
+		return Double.longBitsToDouble(result);
+	}
+	
+	public String readS()
+	{
+		String result = null;
+		try
+		{
+			result = new String(_decrypt, _off, _decrypt.length - _off, "UTF-16LE");
+			result = result.substring(0, result.indexOf(0x00));
+			_off += (result.length() * 2) + 2;
+		}
+		catch (Exception e)
+		{
+			_log.warning(getClass().getSimpleName() + ": " + e.getMessage());
+		}
+		
+		return result;
+	}
+	
+	public final byte[] readB(int length)
+	{
+		byte[] result = new byte[length];
+		System.arraycopy(_decrypt, _off, result, 0, length);
+		_off += length;
+		return result;
+	}
+	
+	public long readQ()
+	{
+		long result = _decrypt[_off++] & 0xff;
+		result |= (_decrypt[_off++] & 0xffL) << 8L;
+		result |= (_decrypt[_off++] & 0xffL) << 16L;
+		result |= (_decrypt[_off++] & 0xffL) << 24L;
+		result |= (_decrypt[_off++] & 0xffL) << 32L;
+		result |= (_decrypt[_off++] & 0xffL) << 40L;
+		result |= (_decrypt[_off++] & 0xffL) << 48L;
+		result |= (_decrypt[_off++] & 0xffL) << 56L;
+		return result;
+	}
+}