jackrabbit/ArgeoLoginModule.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.jackrabbit;
  17
  18 import java.security.Principal;
  19 import java.security.acl.Group;
  20 import java.util.LinkedHashSet;
  21 import java.util.Map;
  22 import java.util.Set;
  23
  24 import javax.jcr.Credentials;
  25 import javax.jcr.RepositoryException;
  26 import javax.jcr.Session;
  27 import javax.security.auth.callback.CallbackHandler;
  28 import javax.security.auth.login.LoginException;
  29
  30 import org.apache.jackrabbit.core.security.AnonymousPrincipal;
  31 import org.apache.jackrabbit.core.security.authentication.AbstractLoginModule;
  32 import org.apache.jackrabbit.core.security.authentication.Authentication;
  33 import org.apache.jackrabbit.core.security.principal.AdminPrincipal;
  34 import org.argeo.security.SystemAuthentication;
  35 import org.springframework.security.authentication.AnonymousAuthenticationToken;
  36 import org.springframework.security.core.GrantedAuthority;
  37 import org.springframework.security.core.context.SecurityContextHolder;
  38
  39 /** Jackrabbit login mechanism based on Spring Security */
  40 public class ArgeoLoginModule extends AbstractLoginModule {
  41         private String adminRole = "ROLE_ADMIN";
  42
  43         /**
  44          * Returns the Spring {@link org.springframework.security.Authentication}
  45          * (which can be null)
  46          */
  47         @Override
  48         protected Principal getPrincipal(Credentials credentials) {
  49                 return SecurityContextHolder.getContext().getAuthentication();
  50         }
  51
  52         protected Set<Principal> getPrincipals() {
  53                 // use linked HashSet instead of HashSet in order to maintain the order
  54                 // of principals (as in the Subject).
  55                 org.springframework.security.core.Authentication authen = (org.springframework.security.core.Authentication) principal;
  56
  57                 Set<Principal> principals = new LinkedHashSet<Principal>();
  58                 principals.add(authen);
  59
  60                 if (authen instanceof SystemAuthentication) {
  61                         principals.add(new AdminPrincipal(authen.getName()));
  62                         // principals.add(new ArgeoSystemPrincipal(authen.getName()));
  63                 } else if (authen instanceof AnonymousAuthenticationToken) {
  64                         principals.add(new AnonymousPrincipal());
  65                 } else {
  66                         for (GrantedAuthority ga : authen.getAuthorities()) {
  67                                 if (ga instanceof Principal)
  68                                         principals.add((Principal) ga);
  69                                 // FIXME: make it more generic
  70                                 if (adminRole.equals(ga.getAuthority()))
  71                                         principals.add(new AdminPrincipal(authen.getName()));
  72                         }
  73                 }
  74
  75                 // remove previous credentials
  76                 // Set<SimpleCredentials> thisCredentials = subject
  77                 // .getPublicCredentials(SimpleCredentials.class);
  78                 // if (thisCredentials != null)
  79                 // thisCredentials.clear();
  80
  81                 return principals;
  82         }
  83
  84         /**
  85          * Super implementation removes all {@link Principal}, the Spring
  86          * {@link org.springframework.security.Authentication} as well. Here we
  87          * simply clear Jackrabbit related {@link Principal}s.
  88          */
  89         // @Override
  90         // public boolean logout() throws LoginException {
  91         // Set<Principal> principals = subject.getPrincipals();
  92         // for (Principal principal : subject.getPrincipals()) {
  93         // if ((principal instanceof AdminPrincipal)
  94         // || (principal instanceof ArgeoSystemPrincipal)
  95         // || (principal instanceof AnonymousPrincipal)
  96         // || (principal instanceof GrantedAuthority)) {
  97         // principals.remove(principal);
  98         // }
  99         // }
 100         // // clearPrincipals(AdminPrincipal.class);
 101         // // clearPrincipals(ArgeoSystemPrincipal.class);
 102         // // clearPrincipals(AnonymousPrincipal.class);
 103         // // clearPrincipals(GrantedAuthority.class);
 104         // return true;
 105         // }
 106
 107         // private <T extends Principal> void clearPrincipals(Class<T> clss) {
 108         // Set<T> principals = subject.getPrincipals(clss);
 109         // if (principals != null)
 110         // principals.clear();
 111         // }
 112
 113         @SuppressWarnings("rawtypes")
 114         @Override
 115         protected void doInit(CallbackHandler callbackHandler, Session session,
 116                         Map options) throws LoginException {
 117         }
 118
 119         @Override
 120         protected boolean impersonate(Principal principal, Credentials credentials)
 121                         throws RepositoryException, LoginException {
 122                 throw new UnsupportedOperationException(
 123                                 "Impersonation is not yet supported");
 124         }
 125
 126         @Override
 127         protected Authentication getAuthentication(final Principal principal,
 128                         Credentials creds) throws RepositoryException {
 129                 if (principal instanceof Group) {
 130                         return null;
 131                 }
 132                 return new Authentication() {
 133                         public boolean canHandle(Credentials credentials) {
 134                                 return principal instanceof org.springframework.security.core.Authentication;
 135                         }
 136
 137                         public boolean authenticate(Credentials credentials)
 138                                         throws RepositoryException {
 139                                 return ((org.springframework.security.core.Authentication) principal)
 140                                                 .isAuthenticated();
 141                         }
 142                 };
 143         }
 144
 145 }