org.argeo.security.core/src/org/argeo/security/login/AnonymousLoginModule.java

   1 /*
   2  * Copyright (C) 2007-2012 Argeo GmbH
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.security.login;
  17
  18 import java.io.IOException;
  19 import java.util.Collections;
  20 import java.util.List;
  21 import java.util.Locale;
  22
  23 import javax.security.auth.callback.Callback;
  24 import javax.security.auth.callback.CallbackHandler;
  25 import javax.security.auth.callback.UnsupportedCallbackException;
  26 import javax.security.auth.login.LoginException;
  27
  28 import org.argeo.security.SecurityUtils;
  29 import org.argeo.util.LocaleCallback;
  30 import org.argeo.util.LocaleUtils;
  31 import org.springframework.security.authentication.AnonymousAuthenticationToken;
  32 import org.springframework.security.core.Authentication;
  33 import org.springframework.security.core.authority.SimpleGrantedAuthority;
  34
  35 /** Login module which caches one subject per thread. */
  36 public class AnonymousLoginModule extends AbstractSpringLoginModule {
  37         private String anonymousRole = "ROLE_ANONYMOUS";
  38         /** Comma separated list of locales */
  39         private String availableLocales = null;
  40
  41         @Override
  42         protected Authentication processLogin(CallbackHandler callbackHandler)
  43                         throws LoginException, UnsupportedCallbackException, IOException,
  44                         InterruptedException {
  45                 BundleContextCallback bundleContextCallback = new BundleContextCallback();
  46                 Locale selectedLocale = null;
  47                 // multi locale
  48                 if (availableLocales != null && !availableLocales.trim().equals("")) {
  49                         LocaleCallback localeCallback = new LocaleCallback(availableLocales);
  50                         callbackHandler.handle(new Callback[] { localeCallback,
  51                                         bundleContextCallback });
  52                         selectedLocale = localeCallback.getSelectedLocale();
  53                 } else {
  54                         callbackHandler.handle(new Callback[] { bundleContextCallback });
  55                 }
  56
  57                 List<SimpleGrantedAuthority> authorities = Collections
  58                                 .singletonList(new SimpleGrantedAuthority(anonymousRole));
  59                 AnonymousAuthenticationToken anonymousToken = new AnonymousAuthenticationToken(
  60                                 SecurityUtils.getStaticKey(), null, authorities);
  61
  62                 Authentication auth = getAuthenticationManager(bundleContextCallback)
  63                                 .authenticate(anonymousToken);
  64
  65                 if (selectedLocale != null)
  66                         LocaleUtils.threadLocale.set(selectedLocale);
  67                 return auth;
  68         }
  69 }