| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.karaf.shell.ssh; |
| |
| import java.io.IOException; |
| import java.security.PublicKey; |
| |
| import javax.security.auth.Subject; |
| import javax.security.auth.callback.Callback; |
| import javax.security.auth.callback.CallbackHandler; |
| import javax.security.auth.callback.NameCallback; |
| import javax.security.auth.callback.PasswordCallback; |
| import javax.security.auth.callback.UnsupportedCallbackException; |
| import javax.security.auth.login.LoginContext; |
| |
| import org.apache.karaf.jaas.modules.publickey.PublickeyCallback; |
| import org.apache.sshd.common.Session; |
| import org.apache.sshd.server.PasswordAuthenticator; |
| import org.apache.sshd.server.PublickeyAuthenticator; |
| import org.apache.sshd.server.session.ServerSession; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class KarafJaasAuthenticator implements PasswordAuthenticator, PublickeyAuthenticator { |
| |
| public static final Session.AttributeKey<Subject> SUBJECT_ATTRIBUTE_KEY = new Session.AttributeKey<Subject>(); |
| private final Logger LOGGER = LoggerFactory.getLogger(KarafJaasAuthenticator.class); |
| |
| private String realm; |
| |
| public String getRealm() { |
| return realm; |
| } |
| |
| public void setRealm(String realm) { |
| this.realm = realm; |
| } |
| |
| public boolean authenticate(final String username, final String password, final ServerSession session) { |
| try { |
| Subject subject = new Subject(); |
| LoginContext loginContext = new LoginContext(realm, subject, new CallbackHandler() { |
| public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException { |
| for (Callback callback : callbacks) { |
| if (callback instanceof NameCallback) { |
| ((NameCallback) callback).setName(username); |
| } else if (callback instanceof PasswordCallback) { |
| ((PasswordCallback) callback).setPassword(password.toCharArray()); |
| } else { |
| throw new UnsupportedCallbackException(callback); |
| } |
| } |
| } |
| }); |
| loginContext.login(); |
| |
| session.setAttribute(SUBJECT_ATTRIBUTE_KEY, subject); |
| return true; |
| } catch (Exception e) { |
| LOGGER.debug("User authentication failed with " + e.getMessage(), e); |
| return false; |
| } |
| } |
| |
| public boolean authenticate(final String username, final PublicKey key, final ServerSession session) { |
| try { |
| Subject subject = new Subject(); |
| LoginContext loginContext = new LoginContext(realm, subject, new CallbackHandler() { |
| public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException { |
| for (Callback callback : callbacks) { |
| if (callback instanceof NameCallback) { |
| ((NameCallback) callback).setName(username); |
| } else if (callback instanceof PublickeyCallback) { |
| ((PublickeyCallback) callback).setPublicKey(key); |
| } else { |
| throw new UnsupportedCallbackException(callback); |
| } |
| } |
| } |
| }); |
| loginContext.login(); |
| |
| session.setAttribute(SUBJECT_ATTRIBUTE_KEY, subject); |
| return true; |
| } catch (Exception e) { |
| LOGGER.debug("User authentication failed with " + e.getMessage(), e); |
| return false; |
| } |
| } |
| |
| } |