// The MIT License (MIT)

//

// Copyright (c) 2017 Robert C. Seacord

//

// Permission is hereby granted, free of charge, to any person obtaining a copy

// of this software and associated documentation files (the "Software"), to deal

// in the Software without restriction, including without limitation the rights

// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

// copies of the Software, and to permit persons to whom the Software is

// furnished to do so, subject to the following conditions:

//

// The above copyright notice and this permission notice shall be included in all

// copies or substantial portions of the Software.

//

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE

// SOFTWARE.

package OBJ01J;

import java.lang.reflect.Field;

import java.security.CodeSource;

import java.security.Permission;

import java.security.PermissionCollection;

import java.security.Policy;

import java.util.Enumeration;

class PrivReflection {

public static void main(String args[]) throws Exception {

SecurityManager sm = System.getSecurityManager();

if (sm != null) {

System.out.println("Security manager installed.");

// Construct a code source with the code base

CodeSource cs = new PrivReflection().getClass().getProtectionDomain().getCodeSource();

System.out.println("path: " + cs.getLocation().getPath());

// Get all granted permissions

PermissionCollection collectPerm = Policy.getPolicy().getPermissions(cs);

// View each permission in the permission collection

Enumeration<Permission> pernEnum = collectPerm.elements();

while (pernEnum.hasMoreElements()) {

System.out.println(pernEnum.nextElement());

}

} else {

System.out.println("No security manager.");

}

// Returns an array of Field objects reflecting

// all the fields declared by the class (including private)

final Field fields[] = FieldTest.class.getDeclaredFields();

// Enumerate fields

for (Field field : fields) {

System.out.println("Field: " + field);

}

for (Field field : fields) {

if ("barPrivStr".equals(field.getName())) {

FieldTest fieldTest = new FieldTest();

try {

// Get field

System.out.println(field.get(fieldTest));

} catch (IllegalAccessException iae) {

System.err.println("java.lang.IllegalAccessException" + iae.toString());

}

// Make private field accessible

// Policy file: C:/Users/rseacord/.java.policy

field.setAccessible(true);

// Get field

System.out.println(field.get(fieldTest));

// Set field

field.set(fieldTest, "fighters");

System.out.println(field.get(fieldTest));

break;

}

}

}

}