001/* 002 * (C) Copyright 2006-2012 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * Nuxeo - initial API and implementation 018 * 019 */ 020 021package org.nuxeo.ecm.platform.web.common.exceptionhandling; 022 023import java.util.Arrays; 024import java.util.List; 025 026import javax.servlet.ServletException; 027 028import org.nuxeo.ecm.core.api.DocumentSecurityException; 029 030public class ExceptionHelper { 031 032 private ExceptionHelper() { 033 } 034 035 public static Throwable unwrapException(Throwable t) { 036 Throwable cause = null; 037 if (t instanceof ServletException) { 038 cause = ((ServletException) t).getRootCause(); 039 } else if (t instanceof Exception) { 040 cause = t.getCause(); 041 } 042 043 if (cause == null) { 044 return t; 045 } else { 046 return unwrapException(cause); 047 } 048 } 049 050 protected static final List<String> ERROR_MESSAGES = Arrays.asList("java.lang.SecurityException", 051 DocumentSecurityException.class.getName(), SecurityException.class.getName()); 052 053 public static boolean isSecurityError(Throwable t) { 054 if (t == null) { 055 return false; 056 } else if (t instanceof DocumentSecurityException || t.getCause() instanceof DocumentSecurityException 057 || t.getCause() instanceof SecurityException) { 058 return true; 059 } else if (t.getMessage() != null) { 060 String message = t.getMessage(); 061 for (String errorMessage : ERROR_MESSAGES) { 062 if (message.contains(errorMessage)) { 063 return true; 064 } 065 } 066 } 067 return false; 068 } 069 070}