public void cloneLocals(int whereToStop) {
oldLVtoSandboxLV = new HashMap<>();
List<?> oldLocals = getLocals();
for (int i = 0; i < whereToStop; i++) {
Type t = lvs.getLocalTypes().get(i);
if (i == 0 && t == null && (access & ACC_STATIC) == 0)
t = Type.getType("L" + className + ";");
if (i < firstLocal && t == null) {
if ((Opcodes.ACC_STATIC & access) == 0)
t = Type.getMethodType(this.desc).getArgumentTypes()[i - 1];
else t = Type.getMethodType(this.desc).getArgumentTypes()[i];
}
if (t.getSort() == Type.OBJECT && t.getInternalName().equals("java/lang/Object")) {
// Default to the type of what we cloened from
for (Object o : oldLocals) {
LocalVariableNode lv = (LocalVariableNode) o;
if (lv.index + 1 == i) {
t = Type.getType(lv.desc);
break;
}
}
}
int idx = lvs.newLocal(t);
oldLVtoSandboxLV.put(i, idx);
newLVs.add(new LocalVariableNode("clone_" + i, t.getDescriptor(), null, null, null, idx));
load(i, t);
if (t.getSort() == Type.ARRAY || t.getSort() == Type.OBJECT)
cloneValAtTopOfStack(t.getDescriptor());
store(idx, t);
}
}
public static boolean methodDescsCloseEnough(String mightHaveVMState, String desc) {
Type[] d1 = Type.getArgumentTypes(mightHaveVMState);
Type[] d2 = Type.getArgumentTypes(desc);
if (Arrays.deepEquals(d1, d2)) return true;
if (d1[d1.length - 1].getInternalName().equals(Type.getInternalName(VMState.class))) {
if (d1.length - 1 != d2.length) return false;
for (int i = 0; i < d1.length - 1; i++) if (!d1[i].equals(d2[i])) return false;
return true;
}
return false;
}
public void getSandboxFlag() {
getSandboxFlagState();
super.visitMethodInsn(
INVOKEVIRTUAL, Type.getInternalName(VMState.class), "getState", "()I", false);
}