| | |
| | | /* |
| | | * Copyright 2014 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 |
| | | * 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 |
| | | * 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. |
| | | * 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.security.PublicKey; |
| | | import java.util.List; |
| | | import java.util.Locale; |
| | | import java.util.concurrent.ExecutionException; |
| | | import java.util.concurrent.TimeUnit; |
| | | |
| | | import org.apache.sshd.server.PublickeyAuthenticator; |
| | | import org.apache.sshd.server.session.ServerSession; |
| | | |
| | | import com.gitblit.manager.IGitblit; |
| | | import com.gitblit.manager.IAuthenticationManager; |
| | | import com.gitblit.models.UserModel; |
| | | import com.google.common.cache.Cache; |
| | | import com.google.common.cache.CacheBuilder; |
| | | import com.google.common.cache.CacheLoader; |
| | | import com.google.common.cache.LoadingCache; |
| | | |
| | | /** |
| | | * |
| | |
| | | */ |
| | | public class SshKeyAuthenticator implements PublickeyAuthenticator { |
| | | |
| | | protected final IGitblit gitblit; |
| | | protected final IKeyManager keyManager; |
| | | |
| | | protected final IAuthenticationManager authManager; |
| | | |
| | | public SshKeyAuthenticator(IGitblit gitblit) { |
| | | this.gitblit = gitblit; |
| | | LoadingCache<String, List<PublicKey>> sshKeyCache = CacheBuilder |
| | | .newBuilder(). |
| | | expireAfterAccess(15, TimeUnit.MINUTES). |
| | | maximumSize(100) |
| | | .build(new CacheLoader<String, List<PublicKey>>() { |
| | | public List<PublicKey> load(String username) { |
| | | return keyManager.getKeys(username); |
| | | } |
| | | }); |
| | | |
| | | public SshKeyAuthenticator(IKeyManager keyManager, IAuthenticationManager authManager) { |
| | | this.keyManager = keyManager; |
| | | this.authManager = authManager; |
| | | } |
| | | |
| | | @Override |
| | | public boolean authenticate(String username, PublicKey key, ServerSession session) { |
| | | // TODO actually authenticate |
| | | return true; |
| | | public boolean authenticate(String username, final PublicKey suppliedKey, |
| | | final ServerSession session) { |
| | | final SshSession sd = session.getAttribute(SshSession.KEY); |
| | | |
| | | username = username.toLowerCase(Locale.US); |
| | | try { |
| | | List<PublicKey> keys = sshKeyCache.get(username); |
| | | if (keys == null || keys.isEmpty()) { |
| | | sd.authenticationError(username, "no-matching-key"); |
| | | return false; |
| | | } |
| | | for (PublicKey key : keys) { |
| | | if (key.equals(suppliedKey)) { |
| | | return validate(username, sd); |
| | | } |
| | | } |
| | | return false; |
| | | } catch (ExecutionException e) { |
| | | sd.authenticationError(username, "user-not-found"); |
| | | return false; |
| | | } |
| | | } |
| | | |
| | | boolean validate(String username, SshSession sd) { |
| | | // now that the key has been validated, check with the authentication |
| | | // manager to ensure that this user exists and can authenticate |
| | | sd.authenticationSuccess(username); |
| | | UserModel user = authManager.authenticate(sd); |
| | | if (user != null) { |
| | | return true; |
| | | } |
| | | sd.authenticationError(username, "user-not-found"); |
| | | return false; |
| | | } |
| | | |
| | | public IKeyManager getKeyManager() { |
| | | return keyManager; |
| | | } |
| | | |
| | | public Cache<String, List<PublicKey>> getKeyCache() { |
| | | return sshKeyCache; |
| | | } |
| | | } |