NativeFunction.java

package com.android.reverse.util;

import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.util.HashMap;

import org.jf.dexlib2.dexbacked.MemoryDexFileItemPointer;
import org.jf.dexlib2.dexbacked.MemoryReader;

import com.android.reverse.collecter.ModuleContext;
import com.android.reverse.smali.DexFileHeadersPointer;


public class NativeFunction implements MemoryReader {
	
	private final static String DVMNATIVE_LIB = "dvmnative";
	
	static{
		System.loadLibrary(DVMNATIVE_LIB);
	}	
	
	public static native ByteBuffer dumpDexFileByClass(Class classInDex,int version);
	public static native ByteBuffer dumpDexFileByCookie(int cookie,int version);
	public static native ByteBuffer dumpMemory(int start,int length);
	private static native DexFileHeadersPointer getHeaderItemPtr(int cookie,int version);
    public static native String getInlineOperation();
    public static native HashMap getSyslinkSnapshot();
	
	public byte[] readBytes(int arg0, int arg1) {
		// TODO Auto-generated method stub
		ByteBuffer data = dumpMemory(arg0, arg1);
		data.order(ByteOrder.LITTLE_ENDIAN);
		byte[] buffer = new byte[data.capacity()];
		data.get(buffer, 0, data.capacity());
		return buffer;
	}
	
	public static MemoryDexFileItemPointer queryDexFileItemPointer(int cookie){
		int version = ModuleContext.getInstance().getApiLevel();
		DexFileHeadersPointer iteminfo = getHeaderItemPtr(cookie,version);
		MemoryDexFileItemPointer pointer = new MemoryDexFileItemPointer();
		pointer.setBaseAddr(iteminfo.getBaseAddr());
		pointer.setpClassDefs(iteminfo.getpClassDefs());
		pointer.setpFieldIds(iteminfo.getpFieldIds());
		pointer.setpMethodIds(iteminfo.getpMethodIds());
		pointer.setpProtoIds(iteminfo.getpProtoIds());
		pointer.setpStringIds(iteminfo.getpStringIds());
		pointer.setpTypeIds(iteminfo.getpTypeIds());
        pointer.setClassCount(iteminfo.getClassCount());
		return pointer;

	}

}