HiveMQ ClientData对象中的证书

Question

我目前正在深入研究HiveMQ插件的开发。我开发了基于AfterLoginCallback的自定义功能。我配置了一个有效的TLS连接，并且我能够使用客户端证书进行连接。

mosquitto_pub.exe -t test -m "testMessage" --cafile myCertificates/hivemq-server-cert.pem  --cert myCertificates/sender.crt --key myCertificates/sender.key -p 8883"

然而，当我调试AfterLoginCallback代码时，我发现我的"ClientData ->证书“是”空的“，在访问时抛出一个IllegalStateExcpetion。

[INFO] java.lang.IllegalStateException: Optional.get() cannot be called on an absent value
[INFO]  at com.google.common.base.Absent.get(Unknown Source)
[INFO]  at mycode.hivemq.plugins.first_plugin.callbacks.AfterLoginCallbackTest.afterSuccessfulLogin(AfterLoginCallbackTest.java:33)

谁能解释一下，为什么证书是空的？

谢谢，Lomungo

Answer 1

在检查凭据的回调中，必须将clientData作为ClientCredentialData处理

下面是一个示例：

public class AuthorizationCallback implements OnAuthenticationCallback, OnAuthorizationCallback {

    @Override
    public Boolean checkCredentials(@NotNull final ClientCredentialsData clientData) throws AuthenticationException {

        //Throw out clients which didn't provide a client certificate
        if (!clientData.getCertificate().isPresent()) {
            log.debug("Client {} didn't provide a client certificate. Disconnecting client", clientData.getClientId());
            throw AuthenticationExceptions.WRONG_CERTIFICATE;
        }

        final Certificate certificate = clientData.getCertificate().get().certificate();
        ...
        }

}

希望这能有所帮助！