/* * Copyright (C) 2017 Laurens Weyn * * This program 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. * * This program 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 hooker; import com.sun.jna.Memory; import com.sun.jna.Pointer; import com.sun.jna.ptr.IntByReference; /** * * @author Laurens Weyn */ public class MemoryBuffer { private final int buffSize; private int startPoint, endPoint; private final Memory memory; private final Pointer process; private boolean allRead = true; public MemoryBuffer(int buffSize, Pointer process) { this.buffSize = buffSize; this.process = process; memory = new Memory(buffSize); startPoint = -1; endPoint = -1; } public char getChar(int pos) { if(!inRange(pos)) { startPoint = pos; endPoint = pos + buffSize; IntByReference memoryRead = new IntByReference(); KernelController.getKernel32().ReadProcessMemory(process, startPoint, memory, buffSize, memoryRead); //allRead = memoryRead.getValue() == 0; //System.out.println("read: " + memoryRead.getValue()); //System.out.println(); } return (char)memory.getShort(pos - startPoint); } public boolean isAllRead() { return allRead; } private boolean inRange(int pos) { return pos >= startPoint && pos < endPoint - 2; } }