JMX身份验证 - 基于角色的MBean操作 [英] JMX Authentication - Role Based MBean Operations

问题描述

我已经通过RMI实现了 JMXAuthenticator 用于JMX身份验证，但是我不确定如何创建角色以允许readonly / readwrite访问级别。例如，在 JMXAuthenticator.authenticate 中，我有自定义身份验证逻辑，并希望这可以确定访问角色。我尝试了以下但在JConsole中执行操作时没有任何区别：

I have implemented JMXAuthenticator for JMX authentication over RMI, however I am not sure how to create roles to allow for readonly/readwrite access levels. For example, in JMXAuthenticator.authenticate I have my custom authentication logic and want this to determine the access role. I have tried the following but it makes no difference when performing operations in JConsole:

@Override
public Subject authenticate(Object credentials) {
    Subject subject = new Subject();
    JMXPrincipal p;

    //...my logic
    String accessLevel = myCustomLogic();
    if (accessLevel.equals("admin")) {
        p = new JMXPrincipal("adminrole");
    } else {
        p = new JMXPrincipal("basicrole");
    }

    subject.getPrincipals().add(p);
    return subject;
}

然后我创建了一个访问文件， jmxaccess。属性，包含

I have then created an access file, jmxaccess.properties, containing

adminuser readwrite
basicuser readonly

和 jmx.management.properties 其中包含 com。 sun.management.jmxremote.access.file =访问文件的路径然后我用 -Dcom.sun.management.config.file = PATH TO jmx.management运行应用程序。属性。

然而，当我通过JConsole连接并作为基本用户进行身份验证（只读访问）时，我可以访问bean上的setter。我通过完整的服务连接：jmx：rmi：... url。

However when I connect through JConsole and authenticate as a basicuser (read only access) I can access setters on the bean. I am connecting via the full service:jmx:rmi:... url.

所以我的问题是

• 我是否需要对我的bean中的setter进行注释/执行任何操作，以将它们指定为仅对管理员用户可见？


• 我是否正确构建了主题对象 JMXAuthenticator 返回？


• 缺少任何其他配置/设置？

• Do I need to annotate/do anything to the setters in my bean to specify them as visible only to admin users?
• Am I not building the Subject object correctly which the JMXAuthenticator returns?
• Any other config/setup that is missing?

谢谢

编辑我的MBean只是一个基本的POJO，私有字段包含公共getter和setter以及另一个公共方法。

Edit My MBean is just a basic POJO with private fields that have public getters and setters plus one other public method.

推荐答案

找到答案：需要通过 InvocationHandler 接口实现自定义调用处理程序。这会在服务器调用到达bean之前拦截它们。在authenticate方法中，您需要检查主体

Found the answer: need to implement a custom invocation handler via InvocationHandler interface. This intercepts server calls before they reach the beans. Inside the authenticate method you need to check the principals

AccessControlContext acc = AccessController.getContext();
Subject subject = Subject.getSubject(acc);
Set principals = subject.getPrincipals(JMXPrincipal.class);
if(principals != null && !principals.isEmpty()) {
    Principal principal = (Principal)principals.iterator().next();
    //your checks
}

我扩展了JMXPrincipal（每次访问一个扩展名）在上面的Authenticator中将它分配给Subject，然后在IH中检索主体后，我可以通过 instanceof 检查类型，并允许操作继续或抛出 SecurityException 。

I extended JMXPrincipal (one extension per access level) and assigned it to the Subject in the Authenticator above, then after retrieving the principal in the IH, I can check the type via instanceof and either allow the action to continue or throw a SecurityException.

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