com.liferay.portal.workflow.WorkflowPermissionAdvice Maven / Gradle / Ivy
/**
* Copyright (c) 2000-present 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.kernel.security.auth.PrincipalException;
import com.liferay.portal.kernel.security.permission.PermissionChecker;
import com.liferay.portal.kernel.security.permission.PermissionThreadLocal;
import com.liferay.portal.kernel.util.ProxyUtil;
import com.liferay.portal.kernel.workflow.WorkflowTaskManager;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Date;
import java.util.Map;
/**
* @author Brian Wing Shun Chan
*/
public class WorkflowPermissionAdvice {
public static WorkflowTaskManager create(
WorkflowTaskManager workflowTaskManager) {
return (WorkflowTaskManager)ProxyUtil.newProxyInstance(
WorkflowPermissionAdvice.class.getClassLoader(),
new Class[] {WorkflowTaskManager.class},
new WorkflowPermissionInvocationHandler(workflowTaskManager));
}
private static final Method _METHOD_ASSIGN_WORKFLOW_TASK_TO_USER;
static {
try {
_METHOD_ASSIGN_WORKFLOW_TASK_TO_USER =
WorkflowTaskManager.class.getMethod(
"assignWorkflowTaskToUser", long.class, long.class,
long.class, long.class, String.class, Date.class,
Map.class);
}
catch (NoSuchMethodException nsme) {
throw new ExceptionInInitializerError(nsme);
}
}
private static class WorkflowPermissionInvocationHandler
implements InvocationHandler {
@Override
public Object invoke(Object proxy, Method method, Object[] arguments)
throws Throwable {
if (_METHOD_ASSIGN_WORKFLOW_TASK_TO_USER.equals(method)) {
long userId = (Long)arguments[1];
PermissionChecker permissionChecker =
PermissionThreadLocal.getPermissionChecker();
if (permissionChecker.getUserId() != userId) {
throw new PrincipalException();
}
}
try {
return method.invoke(_workflowTaskManager, arguments);
}
catch (InvocationTargetException ite) {
throw ite.getCause();
}
}
private WorkflowPermissionInvocationHandler(
WorkflowTaskManager workflowTaskManager) {
_workflowTaskManager = workflowTaskManager;
}
private final WorkflowTaskManager _workflowTaskManager;
}
}