| /* |
| * Copyright 2015 gitblit.com. |
| * |
| * Licensed 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 com.gitblit.transport.ssh; |
| |
| import java.util.Locale; |
| |
| import org.apache.sshd.server.auth.gss.GSSAuthenticator; |
| import org.apache.sshd.server.session.ServerSession; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import com.gitblit.IStoredSettings; |
| import com.gitblit.Keys; |
| import com.gitblit.manager.IAuthenticationManager; |
| import com.gitblit.models.UserModel; |
| |
| public class SshKrbAuthenticator extends GSSAuthenticator { |
| |
| protected final Logger log = LoggerFactory.getLogger(getClass()); |
| protected final IAuthenticationManager authManager; |
| protected final boolean stripDomain; |
| |
| |
| public SshKrbAuthenticator(IStoredSettings settings, IAuthenticationManager authManager) { |
| this.authManager = authManager; |
| |
| String keytabString = settings.getString(Keys.git.sshKrb5Keytab, ""); |
| if(! keytabString.isEmpty()) { |
| setKeytabFile(keytabString); |
| } |
| |
| String servicePrincipalName = settings.getString(Keys.git.sshKrb5ServicePrincipalName, ""); |
| if(! servicePrincipalName.isEmpty()) { |
| setServicePrincipalName(servicePrincipalName); |
| } |
| |
| this.stripDomain = settings.getBoolean(Keys.git.sshKrb5StripDomain, false); |
| } |
| |
| @Override |
| public boolean validateIdentity(ServerSession session, String identity) { |
| log.info("identify with kerberos {}", identity); |
| SshDaemonClient client = session.getAttribute(SshDaemonClient.KEY); |
| if (client.getUser() != null) { |
| log.info("{} has already authenticated!", identity); |
| return true; |
| } |
| String username = identity.toLowerCase(Locale.US); |
| if (stripDomain) { |
| int p = username.indexOf('@'); |
| if (p > 0) { |
| username = username.substring(0, p); |
| } |
| } |
| UserModel user = authManager.authenticate(username); |
| if (user != null) { |
| client.setUser(user); |
| return true; |
| } |
| log.warn("could not authenticate {} for SSH", username); |
| return false; |
| } |
| } |