99 lines
3.2 KiB
Java
99 lines
3.2 KiB
Java
package com.ryanmichela.sshd;
|
|
|
|
import java.lang.reflect.Field;
|
|
import java.lang.reflect.Method;
|
|
import java.lang.reflect.Modifier;
|
|
|
|
/**
|
|
* Copyright 2013 Ryan Michela
|
|
*/
|
|
public class ReflectionUtil {
|
|
public static void setProtectedValue(Object o, String field, Object newValue) {
|
|
setProtectedValue(o.getClass(), o, field, newValue);
|
|
}
|
|
|
|
public static void setProtectedValue(Class c, String field, Object newValue) {
|
|
setProtectedValue(c, null, field, newValue);
|
|
}
|
|
|
|
public static void setProtectedValue(Class c, Object o, String field, Object newValue) {
|
|
try {
|
|
|
|
Field f = c.getDeclaredField(field);
|
|
|
|
f.setAccessible(true);
|
|
|
|
Field modifiersField = Field.class.getDeclaredField("modifiers");
|
|
modifiersField.setAccessible(true);
|
|
modifiersField.setInt(f, f.getModifiers() & ~Modifier.FINAL);
|
|
|
|
f.set(o, newValue);
|
|
} catch (NoSuchFieldException ex) {
|
|
System.out.println("*** " + c.getName() + ":" + ex);
|
|
} catch (IllegalAccessException ex) {
|
|
System.out.println("*** " + c.getName() + ":" + ex);
|
|
}
|
|
}
|
|
|
|
public static <T> T getProtectedValue(Object obj, String fieldName) {
|
|
try {
|
|
Class c = obj.getClass();
|
|
while(c != Object.class) {
|
|
Field[] fields = c.getDeclaredFields();
|
|
for(Field f : fields) {
|
|
if (f.getName() == fieldName) {
|
|
f.setAccessible(true);
|
|
return (T) f.get(obj);
|
|
}
|
|
}
|
|
c = c.getSuperclass();
|
|
}
|
|
System.out.println("*** " + obj.getClass().getName() + ":No such field");
|
|
return null;
|
|
} catch (Exception ex) {
|
|
System.out.println("*** " + obj.getClass().getName() + ":" + ex);
|
|
return null;
|
|
}
|
|
}
|
|
|
|
public static <T> T getProtectedValue(Class c, String field) {
|
|
try {
|
|
Field f = c.getDeclaredField(field);
|
|
f.setAccessible(true);
|
|
return (T) f.get(c);
|
|
} catch (Exception ex) {
|
|
System.out.println("*** " + c.getName() + ":" + ex);
|
|
return null;
|
|
}
|
|
}
|
|
|
|
public static Object invokeProtectedMethod(Class c, String method, Object... args) {
|
|
return invokeProtectedMethod(c, null, method, args);
|
|
}
|
|
|
|
public static Object invokeProtectedMethod(Object o, String method, Object... args) {
|
|
return invokeProtectedMethod(o.getClass(), o, method, args);
|
|
}
|
|
|
|
public static Object invokeProtectedMethod(Class c, Object o, String method, Object... args) {
|
|
try {
|
|
Class[] pTypes = new Class[args.length];
|
|
for(int i = 0; i < args.length; i++) {
|
|
if (args[i] instanceof Integer) {
|
|
pTypes[i] = int.class;
|
|
} else {
|
|
pTypes[i] = args[i].getClass();
|
|
}
|
|
}
|
|
|
|
Method m = c.getDeclaredMethod(method, pTypes);
|
|
m.setAccessible(true);
|
|
return m.invoke(o, args);
|
|
}
|
|
catch (Exception ex) {
|
|
System.out.println("*** " + c.getName() + "." + method + "(): " + ex);
|
|
return null;
|
|
}
|
|
}
|
|
}
|