001/* 002 * (C) Copyright 2010-2016 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 */ 019package org.nuxeo.ecm.platform.ui.web.auth.cas2; 020 021import static org.nuxeo.ecm.platform.ui.web.auth.NXAuthConstants.SSO_INITIAL_URL_REQUEST_KEY; 022 023import java.io.IOException; 024import java.security.Principal; 025 026import javax.servlet.ServletException; 027import javax.servlet.http.Cookie; 028import javax.servlet.http.HttpServletRequest; 029import javax.servlet.http.HttpServletResponse; 030 031import org.nuxeo.ecm.core.api.NuxeoException; 032import org.nuxeo.ecm.core.api.NuxeoPrincipal; 033import org.nuxeo.ecm.platform.ui.web.auth.NXAuthConstants; 034import org.nuxeo.ecm.platform.ui.web.auth.service.PluggableAuthenticationService; 035import org.nuxeo.ecm.platform.ui.web.rest.api.URLPolicyService; 036import org.nuxeo.ecm.platform.url.api.DocumentView; 037import org.nuxeo.ecm.platform.web.common.exceptionhandling.DefaultNuxeoExceptionHandler; 038import org.nuxeo.ecm.platform.web.common.exceptionhandling.ExceptionHelper; 039import org.nuxeo.runtime.api.Framework; 040 041public class SecurityExceptionHandler extends DefaultNuxeoExceptionHandler { 042 043 public static final String CAS_REDIRECTION_URL = "/cas2.jsp"; 044 045 public static final String COOKIE_NAME_LOGOUT_URL = "cookie.name.logout.url"; 046 047 Cas2Authenticator cas2Authenticator; 048 049 public SecurityExceptionHandler() { 050 } 051 052 @Override 053 public void handleException(HttpServletRequest request, HttpServletResponse response, Throwable t) 054 throws IOException, ServletException { 055 056 if (response.containsHeader("Cache-Control")) { 057 response.setHeader("Cache-Control", "no-cache"); 058 } 059 060 Throwable unwrappedException = ExceptionHelper.unwrapException(t); 061 062 if (!ExceptionHelper.isSecurityError(unwrappedException) 063 && !response.containsHeader(SSO_INITIAL_URL_REQUEST_KEY)) { 064 super.handleException(request, response, t); 065 return; 066 } 067 068 Principal principal = getPrincipal(request); 069 if (principal instanceof NuxeoPrincipal) { 070 NuxeoPrincipal nuxeoPrincipal = (NuxeoPrincipal) principal; 071 // redirect to login than to requested page 072 if (nuxeoPrincipal.isAnonymous()) { 073 response.resetBuffer(); 074 075 String urlToReach = getURLToReach(request); 076 Cookie cookieUrlToReach = new Cookie(NXAuthConstants.SSO_INITIAL_URL_REQUEST_KEY, urlToReach); 077 cookieUrlToReach.setPath("/"); 078 cookieUrlToReach.setMaxAge(60); 079 response.addCookie(cookieUrlToReach); 080 081 if (!response.isCommitted()) { 082 request.getRequestDispatcher(CAS_REDIRECTION_URL).forward(request, response); 083 } 084 parameters.getListener().responseComplete(); 085 return; 086 } 087 } 088 // go back to default handler 089 super.handleException(request, response, t); 090 } 091 092 protected Cas2Authenticator getCasAuthenticator() { 093 if (cas2Authenticator != null) { 094 return cas2Authenticator; 095 } 096 097 PluggableAuthenticationService service = (PluggableAuthenticationService) Framework.getRuntime().getComponent( 098 PluggableAuthenticationService.NAME); 099 if (service == null) { 100 throw new NuxeoException("Can't initialize Nuxeo Pluggable Authentication Service"); 101 } 102 103 cas2Authenticator = (Cas2Authenticator) service.getPlugin("CAS2_AUTH"); 104 105 if (cas2Authenticator == null) { 106 throw new NuxeoException("Can't get CAS authenticator"); 107 } 108 return cas2Authenticator; 109 } 110 111 protected String getURLToReach(HttpServletRequest request) { 112 DocumentView docView = (DocumentView) request.getAttribute(URLPolicyService.DOCUMENT_VIEW_REQUEST_KEY); 113 114 if (docView != null) { 115 String urlToReach = getURLPolicyService().getUrlFromDocumentView(docView, ""); 116 117 if (urlToReach != null) { 118 return urlToReach; 119 } 120 } 121 return request.getRequestURL().toString() + "?" + request.getQueryString(); 122 } 123 124 protected URLPolicyService getURLPolicyService() { 125 return Framework.getService(URLPolicyService.class); 126 } 127 128}