/
UserIdHelper.java
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/
UserIdHelper.java
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/*
* Sonatype Nexus (TM) Open Source Version
* Copyright (c) 2008-present Sonatype, Inc.
* All rights reserved. Includes the third-party code listed at http://links.sonatype.com/products/nexus/oss/attributions.
*
* This program and the accompanying materials are made available under the terms of the Eclipse Public License Version 1.0,
* which accompanies this distribution and is available at http://www.eclipse.org/legal/epl-v10.html.
*
* Sonatype Nexus (TM) Professional Version is available from Sonatype, Inc. "Sonatype" and "Sonatype Nexus" are trademarks
* of Sonatype, Inc. Apache Maven is a trademark of the Apache Software Foundation. M2eclipse is a trademark of the
* Eclipse Foundation. All other trademarks are the property of their respective owners.
*/
package org.sonatype.nexus.security;
import javax.annotation.Nullable;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.subject.Subject;
/**
* Helper to get current user-id.
*
* @since 3.1
*/
public class UserIdHelper
{
private UserIdHelper() {
// empty
}
/**
* Value when subject is missing or subject principal is not known.
*/
public static final String UNKNOWN = "*UNKNOWN";
/**
* Value for privileged system execution.
*/
public static final String SYSTEM = "*SYSTEM";
/**
* Get the current user-id.
*
* @see #get(Subject)
*/
public static String get() {
return get(SecurityUtils.getSubject());
}
/**
* Get the user-id from the given subject or {@link #UNKNOWN}.
*/
public static String get(@Nullable final Subject subject) {
if (subject != null) {
Object principal = subject.getPrincipal();
if (principal != null) {
return principal.toString();
}
}
return UNKNOWN;
}
/**
* Check if current user-id is {@link #SYSTEM}.
*/
public static boolean isSystem() {
return get().equals(SYSTEM);
}
/**
* Check if current user-id is {@link #UNKNOWN}.
*/
public static boolean isUnknown() {
return get().equals(UNKNOWN);
}
}