001    /**
002     * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.workflow.permission;
016    
017    import com.liferay.portal.kernel.log.Log;
018    import com.liferay.portal.kernel.log.LogFactoryUtil;
019    import com.liferay.portal.kernel.workflow.WorkflowException;
020    import com.liferay.portal.kernel.workflow.WorkflowInstance;
021    import com.liferay.portal.kernel.workflow.WorkflowInstanceManagerUtil;
022    import com.liferay.portal.kernel.workflow.WorkflowTaskManagerUtil;
023    import com.liferay.portal.kernel.workflow.permission.WorkflowPermission;
024    import com.liferay.portal.model.WorkflowInstanceLink;
025    import com.liferay.portal.security.permission.ActionKeys;
026    import com.liferay.portal.security.permission.PermissionChecker;
027    import com.liferay.portal.service.WorkflowDefinitionLinkLocalServiceUtil;
028    import com.liferay.portal.service.WorkflowInstanceLinkLocalServiceUtil;
029    
030    /**
031     * @author Jorge Ferrer
032     */
033    public class WorkflowPermissionImpl implements WorkflowPermission {
034    
035            public Boolean hasPermission(
036                    PermissionChecker permissionChecker, long groupId, String className,
037                    long classPK, String actionId) {
038    
039                    try {
040                            return doHasPermission(
041                                    permissionChecker, groupId, className, classPK, actionId);
042                    }
043                    catch (Exception e) {
044                            _log.error(e, e);
045                    }
046    
047                    return null;
048            }
049    
050            protected Boolean doHasPermission(
051                            PermissionChecker permissionChecker, long groupId, String className,
052                            long classPK, String actionId)
053                    throws Exception {
054    
055                    long companyId = permissionChecker.getCompanyId();
056    
057                    if (permissionChecker.isCompanyAdmin() ||
058                            permissionChecker.isCommunityAdmin(groupId)) {
059    
060                            return Boolean.TRUE;
061                    }
062    
063                    if (!WorkflowDefinitionLinkLocalServiceUtil.hasWorkflowDefinitionLink(
064                                    companyId, groupId, className)) {
065    
066                            return null;
067                    }
068    
069                    if (WorkflowInstanceLinkLocalServiceUtil.hasWorkflowInstanceLink(
070                                    companyId, groupId, className, classPK)) {
071    
072                            WorkflowInstanceLink workflowInstanceLink =
073                                    WorkflowInstanceLinkLocalServiceUtil.getWorkflowInstanceLink(
074                                                    companyId, groupId, className, classPK);
075    
076                            WorkflowInstance workflowInstance =
077                                    WorkflowInstanceManagerUtil.getWorkflowInstance(
078                                            companyId, workflowInstanceLink.getWorkflowInstanceId());
079    
080                            if (workflowInstance.isComplete()) {
081                                    return null;
082                            }
083    
084                            boolean hasPermission = isWorkflowTaskAssignedToUser(
085                                    permissionChecker, workflowInstance);
086    
087                            if (!hasPermission && actionId.equals(ActionKeys.VIEW)) {
088                                    return null;
089                            }
090                            else {
091                                    return hasPermission;
092                            }
093                    }
094    
095                    return null;
096            }
097    
098            protected boolean isWorkflowTaskAssignedToUser(
099                            PermissionChecker permissionChecker,
100                            WorkflowInstance workflowInstance)
101                    throws WorkflowException {
102    
103                    int count =
104                            WorkflowTaskManagerUtil.getWorkflowTaskCountByWorkflowInstance(
105                                    permissionChecker.getCompanyId(), permissionChecker.getUserId(),
106                                    workflowInstance.getWorkflowInstanceId(), Boolean.FALSE);
107    
108                    if (count > 0) {
109                            return true;
110                    }
111                    else {
112                            return false;
113                    }
114            }
115    
116            private static Log _log = LogFactoryUtil.getLog(
117                    WorkflowPermissionImpl.class);
118    
119    }