001/* 002 * (C) Copyright 2010 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 020package org.nuxeo.ecm.platform.ui.web.auth.cas2; 021 022import java.io.IOException; 023import java.security.Principal; 024 025import javax.servlet.ServletException; 026import javax.servlet.http.Cookie; 027import javax.servlet.http.HttpServletRequest; 028import javax.servlet.http.HttpServletResponse; 029 030import org.nuxeo.ecm.core.api.NuxeoException; 031import org.nuxeo.ecm.core.api.NuxeoPrincipal; 032import org.nuxeo.ecm.platform.ui.web.auth.NXAuthConstants; 033import org.nuxeo.ecm.platform.ui.web.auth.service.PluggableAuthenticationService; 034import org.nuxeo.ecm.platform.ui.web.rest.api.URLPolicyService; 035import org.nuxeo.ecm.platform.url.api.DocumentView; 036import org.nuxeo.ecm.platform.web.common.exceptionhandling.DefaultNuxeoExceptionHandler; 037import org.nuxeo.ecm.platform.web.common.exceptionhandling.ExceptionHelper; 038import org.nuxeo.runtime.api.Framework; 039 040import static org.nuxeo.ecm.platform.ui.web.auth.NXAuthConstants.SSO_INITIAL_URL_REQUEST_KEY; 041 042public class SecurityExceptionHandler extends DefaultNuxeoExceptionHandler { 043 044 public static final String CAS_REDIRECTION_URL = "/cas2.jsp"; 045 046 public static final String COOKIE_NAME_LOGOUT_URL = "cookie.name.logout.url"; 047 048 Cas2Authenticator cas2Authenticator; 049 050 public SecurityExceptionHandler() { 051 } 052 053 @Override 054 public void handleException(HttpServletRequest request, HttpServletResponse response, Throwable t) 055 throws IOException, ServletException { 056 057 if (response.containsHeader("Cache-Control")) { 058 response.setHeader("Cache-Control", "no-cache"); 059 } 060 061 Throwable unwrappedException = unwrapException(t); 062 063 if (!ExceptionHelper.isSecurityError(unwrappedException) 064 && !response.containsHeader(SSO_INITIAL_URL_REQUEST_KEY)) { 065 super.handleException(request, response, t); 066 return; 067 } 068 069 Principal principal = request.getUserPrincipal(); 070 NuxeoPrincipal nuxeoPrincipal = null; 071 if (principal instanceof NuxeoPrincipal) { 072 nuxeoPrincipal = (NuxeoPrincipal) principal; 073 // redirect to login than to requested page 074 if (nuxeoPrincipal.isAnonymous()) { 075 response.resetBuffer(); 076 077 String urlToReach = getURLToReach(request); 078 Cookie cookieUrlToReach = new Cookie(NXAuthConstants.SSO_INITIAL_URL_REQUEST_KEY, urlToReach); 079 cookieUrlToReach.setPath("/"); 080 cookieUrlToReach.setMaxAge(60); 081 response.addCookie(cookieUrlToReach); 082 083 if (!response.isCommitted()) { 084 request.getRequestDispatcher(CAS_REDIRECTION_URL).forward(request, response); 085 } 086 parameters.getListener().responseComplete(); 087 return; 088 } 089 } 090 // go back to default handler 091 super.handleException(request, response, t); 092 } 093 094 protected Cas2Authenticator getCasAuthenticator() { 095 if (cas2Authenticator != null) { 096 return cas2Authenticator; 097 } 098 099 PluggableAuthenticationService service = (PluggableAuthenticationService) Framework.getRuntime().getComponent( 100 PluggableAuthenticationService.NAME); 101 if (service == null) { 102 throw new NuxeoException("Can't initialize Nuxeo Pluggable Authentication Service"); 103 } 104 105 cas2Authenticator = (Cas2Authenticator) service.getPlugin("CAS2_AUTH"); 106 107 if (cas2Authenticator == null) { 108 throw new NuxeoException("Can't get CAS authenticator"); 109 } 110 return cas2Authenticator; 111 } 112 113 protected String getURLToReach(HttpServletRequest request) { 114 DocumentView docView = (DocumentView) request.getAttribute(URLPolicyService.DOCUMENT_VIEW_REQUEST_KEY); 115 116 if (docView != null) { 117 String urlToReach = getURLPolicyService().getUrlFromDocumentView(docView, ""); 118 119 if (urlToReach != null) { 120 return urlToReach; 121 } 122 } 123 return request.getRequestURL().toString() + "?" + request.getQueryString(); 124 } 125 126 protected URLPolicyService getURLPolicyService() { 127 return Framework.getService(URLPolicyService.class); 128 } 129 130}