113 lines
3.1 KiB
Java
113 lines
3.1 KiB
Java
/*
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* Copyright (C) 2004-2015 L2J Server
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*
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* This file is part of L2J Server.
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*
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* L2J Server is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* L2J Server is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.l2jserver.util.network;
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import java.util.logging.Logger;
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/**
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* This class ...
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* @version $Revision: 1.2.4.1 $ $Date: 2005/03/27 15:30:12 $
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*/
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public abstract class BaseRecievePacket
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{
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private static final Logger _log = Logger.getLogger(BaseRecievePacket.class.getName());
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private final byte[] _decrypt;
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private int _off;
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public BaseRecievePacket(byte[] decrypt)
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{
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_decrypt = decrypt;
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_off = 1; // skip packet type id
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}
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public int readD()
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{
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int result = _decrypt[_off++] & 0xff;
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result |= (_decrypt[_off++] << 8) & 0xff00;
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result |= (_decrypt[_off++] << 0x10) & 0xff0000;
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result |= (_decrypt[_off++] << 0x18) & 0xff000000;
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return result;
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}
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public int readC()
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{
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int result = _decrypt[_off++] & 0xff;
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return result;
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}
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public int readH()
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{
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int result = _decrypt[_off++] & 0xff;
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result |= (_decrypt[_off++] << 8) & 0xff00;
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return result;
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}
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public double readF()
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{
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long result = _decrypt[_off++] & 0xff;
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result |= (_decrypt[_off++] & 0xffL) << 8L;
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result |= (_decrypt[_off++] & 0xffL) << 16L;
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result |= (_decrypt[_off++] & 0xffL) << 24L;
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result |= (_decrypt[_off++] & 0xffL) << 32L;
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result |= (_decrypt[_off++] & 0xffL) << 40L;
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result |= (_decrypt[_off++] & 0xffL) << 48L;
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result |= (_decrypt[_off++] & 0xffL) << 56L;
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return Double.longBitsToDouble(result);
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}
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public String readS()
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{
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String result = null;
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try
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{
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result = new String(_decrypt, _off, _decrypt.length - _off, "UTF-16LE");
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result = result.substring(0, result.indexOf(0x00));
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_off += (result.length() * 2) + 2;
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}
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catch (Exception e)
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{
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_log.warning(getClass().getSimpleName() + ": " + e.getMessage());
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}
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return result;
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}
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public final byte[] readB(int length)
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{
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byte[] result = new byte[length];
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System.arraycopy(_decrypt, _off, result, 0, length);
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_off += length;
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return result;
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}
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public long readQ()
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{
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long result = _decrypt[_off++] & 0xff;
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result |= (_decrypt[_off++] & 0xffL) << 8L;
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result |= (_decrypt[_off++] & 0xffL) << 16L;
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result |= (_decrypt[_off++] & 0xffL) << 24L;
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result |= (_decrypt[_off++] & 0xffL) << 32L;
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result |= (_decrypt[_off++] & 0xffL) << 40L;
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result |= (_decrypt[_off++] & 0xffL) << 48L;
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result |= (_decrypt[_off++] & 0xffL) << 56L;
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return result;
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}
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}
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