/*
* JBoss, Home of Professional Open Source.
* Copyright 2012, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.domain.management.security;
import static org.jboss.as.domain.management.logging.DomainManagementLogger.SECURITY_LOGGER;
import static org.jboss.as.domain.management.RealmConfigurationConstants.LOCAL_DEFAULT_USER;
import static org.jboss.as.domain.management.security.SecurityRealmService.SKIP_GROUP_LOADING_KEY;
import java.io.IOException;
import java.security.Principal;
import java.util.Collections;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.UnsupportedCallbackException;
import javax.security.sasl.AuthorizeCallback;
import org.jboss.as.domain.management.AuthMechanism;
import org.jboss.as.domain.management.logging.DomainManagementLogger;
import org.jboss.as.domain.management.SecurityRealm;
import org.jboss.msc.service.Service;
import org.jboss.msc.service.ServiceName;
import org.jboss.msc.service.StartContext;
import org.jboss.msc.service.StartException;
import org.jboss.msc.service.StopContext;
import org.wildfly.security.auth.SupportLevel;
import org.wildfly.security.auth.server.RealmIdentity;
import org.wildfly.security.auth.server.RealmUnavailableException;
import org.wildfly.security.credential.Credential;
import org.wildfly.security.evidence.Evidence;
/**
* The Service providing the LocalCallbackHandler implementation.
*
* @author <a href="mailto:darran.lofthouse@jboss.com">Darran Lofthouse</a>
*/
class LocalCallbackHandlerService implements Service<CallbackHandlerService>, CallbackHandlerService {
private static final String SERVICE_SUFFIX = "local";
private final String defaultUser;
private final String allowedUsers;
private boolean allowAll;
private final Set<String> allowedUsersSet = new HashSet<String>();
private final boolean skipGroupLoading;
LocalCallbackHandlerService(final String defaultUser, final String allowedUsers, final boolean skipGroupLoading) {
this.defaultUser = defaultUser;
this.allowedUsers = allowedUsers;
this.skipGroupLoading = skipGroupLoading;
}
/*
* CallbackHandlerService Methods
*/
public AuthMechanism getPreferredMechanism() {
return AuthMechanism.LOCAL;
}
public Set<AuthMechanism> getSupplementaryMechanisms() {
return Collections.emptySet();
}
public Map<String, String> getConfigurationOptions() {
if (defaultUser != null) {
return Collections.singletonMap(LOCAL_DEFAULT_USER, defaultUser);
} else {
return Collections.emptyMap();
}
}
@Override
public boolean isReadyForHttpChallenge() {
// Never used for HTTP authentication.
return false;
}
public CallbackHandler getCallbackHandler(Map<String, Object> sharedState) {
return new LocalCallbackHander(sharedState);
}
@Override
public org.wildfly.security.auth.server.SecurityRealm getElytronSecurityRealm() {
return new LocalSecurityRealm();
}
@Override
public boolean allowGroupLoading() {
return !skipGroupLoading;
}
private class LocalSecurityRealm implements org.wildfly.security.auth.server.SecurityRealm {
@Override
public RealmIdentity getRealmIdentity(Principal principal) throws RealmUnavailableException {
String name = principal.getName();
if (allowAll || allowedUsersSet.contains(name)) {
return new LocalRealmIdentity(name);
}
return RealmIdentity.NON_EXISTENT;
}
@Override
public SupportLevel getCredentialAcquireSupport(Class<? extends Credential> credentialType, String algorithmName)
throws RealmUnavailableException {
return SupportLevel.UNSUPPORTED;
}
@Override
public SupportLevel getEvidenceVerifySupport(Class<? extends Evidence> evidenceType, String algorithmName)
throws RealmUnavailableException {
return SupportLevel.UNSUPPORTED;
}
private class LocalRealmIdentity implements RealmIdentity {
private final String name;
LocalRealmIdentity(final String name) {
this.name = name;
}
@Override
public SupportLevel getCredentialAcquireSupport(Class<? extends Credential> credentialType, String algorithmName)
throws RealmUnavailableException {
return LocalSecurityRealm.this.getCredentialAcquireSupport(credentialType, algorithmName);
}
@Override
public <C extends Credential> C getCredential(Class<C> credentialType) throws RealmUnavailableException {
return null;
}
@Override
public SupportLevel getEvidenceVerifySupport(Class<? extends Evidence> evidenceType, String algorithmName)
throws RealmUnavailableException {
return LocalSecurityRealm.this.getEvidenceVerifySupport(evidenceType, algorithmName);
}
@Override
public boolean verifyEvidence(Evidence evidence) throws RealmUnavailableException {
return false;
}
@Override
public boolean exists() throws RealmUnavailableException {
return true;
}
}
}
/*
* Service Methods
*/
public CallbackHandlerService getValue() throws IllegalStateException, IllegalArgumentException {
return this;
}
public void start(StartContext context) throws StartException {
if (defaultUser != null) {
allowedUsersSet.add(defaultUser);
}
if (allowedUsers != null) {
if ("*".equals(allowedUsers)) {
allowAll = true;
} else {
String[] users = allowedUsers.split(",");
for (String current : users) {
allowedUsersSet.add(current);
}
}
}
}
public void stop(StopContext context) {
allowAll = false;
allowedUsersSet.clear(); // Effectively disables this CBH
}
/*
* CallbackHandler Method
*/
private final class LocalCallbackHander implements CallbackHandler {
private final Map<String, Object> sharedState;
private LocalCallbackHander(final Map<String, Object> sharedState) {
this.sharedState = sharedState;
}
/**
* @see javax.security.auth.callback.CallbackHandler#handle(javax.security.auth.callback.Callback[])
*/
public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
for (Callback current : callbacks) {
if (current instanceof NameCallback) {
NameCallback ncb = (NameCallback) current;
String userName = ncb.getDefaultName();
if ((allowAll || allowedUsersSet.contains(userName)) == false) {
SECURITY_LOGGER.tracef("Username '%s' is not permitted for local authentication.", userName);
throw DomainManagementLogger.ROOT_LOGGER.invalidLocalUser(userName);
}
} else if (current instanceof AuthorizeCallback) {
AuthorizeCallback acb = (AuthorizeCallback) current;
boolean authorized = acb.getAuthenticationID().equals(acb.getAuthorizationID());
if (authorized == false) {
SECURITY_LOGGER.tracef(
"Checking 'AuthorizeCallback', authorized=false, authenticationID=%s, authorizationID=%s.",
acb.getAuthenticationID(), acb.getAuthorizationID());
}
acb.setAuthorized(authorized);
if (authorized && skipGroupLoading) {
sharedState.put(SKIP_GROUP_LOADING_KEY, Boolean.TRUE);
}
} else {
throw new UnsupportedCallbackException(current);
}
}
}
}
public static final class ServiceUtil {
private ServiceUtil() {
}
public static ServiceName createServiceName(final String realmName) {
return SecurityRealm.ServiceUtil.createServiceName(realmName).append(SERVICE_SUFFIX);
}
}
}