com.liferay.portal.workflow.WorkflowPermissionAdvice.java Source code

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Here is the source code for com.liferay.portal.workflow.WorkflowPermissionAdvice.java

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/**
 * Copyright (c) 2000-2012 Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 */

package com.liferay.portal.workflow;

import com.liferay.portal.security.auth.PrincipalException;
import com.liferay.portal.security.permission.PermissionChecker;
import com.liferay.portal.security.permission.PermissionThreadLocal;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.Signature;

/**
 * @author Brian Wing Shun Chan
 */
public class WorkflowPermissionAdvice {

    public Object invoke(ProceedingJoinPoint proceedingJoinPoint) throws Throwable {

        Signature signature = proceedingJoinPoint.getSignature();

        String methodName = signature.getName();

        Object[] arguments = proceedingJoinPoint.getArgs();

        if (methodName.equals(_ASSIGN_WORKFLOW_TASK_TO_USER_METHOD_NAME)) {
            long userId = (Long) arguments[1];

            PermissionChecker permissionChecker = PermissionThreadLocal.getPermissionChecker();

            if (permissionChecker.getUserId() != userId) {
                throw new PrincipalException();
            }
        }

        return proceedingJoinPoint.proceed();
    }

    private static final String _ASSIGN_WORKFLOW_TASK_TO_USER_METHOD_NAME = "assignWorkflowTaskToUser";

}