GroundPlane.java

/**
 *  Copyright 2010 by Benjamin J. Land (a.k.a. BenLand100)
 *
 *  This file is part of the SMART Minimizing Autoing Resource Thing (SMART)
 *
 *  SMART 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.
 *
 *  SMART 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 SMART. If not, see <http://www.gnu.org/licenses/>.
 */

package smart.updater.searches;

import org.apache.bcel.classfile.Method;
import org.apache.bcel.generic.*;
import org.apache.bcel.util.InstructionFinder;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map.Entry;
import smart.updater.RSClient;
import smart.updater.Search;

/**
 * Finds the GroundTile and Plane classes, as well as the CurPlaneIdx,
 * PlaneArray, and GroundSettings static fields. There's more to be found here.
 *
 * @author benland100
 */
public class GroundPlane extends Search {

    public SearchResult run(RSClient data, HashMap<String, ClassGen> classes) {
        for (Entry<String, ClassGen> c : classes.entrySet()) {
            for (Method m : c.getValue().getMethods()) {
                if (m.isStatic() && m.getReturnType() == Type.BOOLEAN) {
                    for (Type t : m.getArgumentTypes()) {
                        if (t instanceof ArrayType && ((ArrayType)t).getDimensions() == 3 && ((ArrayType)t).getBasicType().getSignature().startsWith("L")) {
                            ConstantPoolGen cpg = c.getValue().getConstantPool();
                            MethodGen gen = new MethodGen(m,c.getValue().getClassName(),cpg);
                            InstructionList il = gen.getInstructionList();
                            if (il == null) continue;
                            InstructionFinder f = new InstructionFinder(il);
                            Iterator e = f.search("GETSTATIC GETSTATIC AALOAD ILOAD AALOAD ILOAD BALOAD ICONST IAND");
                            if (e.hasNext()) {
                            	InstructionHandle[] handles = (InstructionHandle[]) e.next();
                                String gba = ((GETSTATIC)handles[0].getInstruction()).getClassName(cpg) + "." + ((GETSTATIC)handles[0].getInstruction()).getFieldName(cpg);
                                data.addField("GroundSettingsArray", gba);
                                e = f.search("GETSTATIC (ICONST)+ GETSTATIC IADD AALOAD");
                                //System.out.println("Found method. Class: "+c.getValue().getClassName() + ", method: "+m.getName());
                                if (e.hasNext()) {
                                    handles = (InstructionHandle[]) e.next();
                                    String planearray = ((GETSTATIC)handles[0].getInstruction()).getClassName(cpg) + "." + ((GETSTATIC)handles[0].getInstruction()).getFieldName(cpg);
                                    String curplane = ((GETSTATIC)handles[2].getInstruction()).getClassName(cpg) + "." + ((GETSTATIC)handles[2].getInstruction()).getFieldName(cpg);
                                    data.addClass("GroundTile", t.getSignature().replaceAll("\\[|L|;", ""));
                                    data.addClass("Plane", ((GETSTATIC)handles[0].getInstruction()).getType(cpg).getSignature().replaceAll("\\[|L|;", ""));
                                    data.addField("LoadedPlane", curplane);
                                    data.addField("PlaneArray", planearray);
                                    return SearchResult.Success;
                                }
                            }
                        }
                    }
                }
            }
        }
        return SearchResult.Failure;
    }
}