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// Copyright (C) 2010 The Android Open Source Project
//
// 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.google.gerrit.sshd;
import com.google.gerrit.reviewdb.AccountExternalId;
import com.google.gerrit.server.AccessPath;
import com.google.gerrit.server.IdentifiedUser;
import com.google.gerrit.server.account.AccountCache;
import com.google.gerrit.server.account.AccountState;
import com.google.gerrit.sshd.SshScope.Context;
import com.google.inject.Inject;
import com.google.inject.Provider;
import com.google.inject.Singleton;
import org.apache.mina.core.future.IoFuture;
import org.apache.mina.core.future.IoFutureListener;
import org.apache.sshd.server.PasswordAuthenticator;
import org.apache.sshd.server.session.ServerSession;
import java.net.SocketAddress;
/**
* Authenticates by password through {@link AccountExternalId} entities.
*/
@Singleton
class DatabasePasswordAuth implements PasswordAuthenticator {
private final AccountCache accountCache;
private final SshLog log;
private final IdentifiedUser.GenericFactory userFactory;
@Inject
DatabasePasswordAuth(final AccountCache ac, final SshLog l,
final IdentifiedUser.GenericFactory uf) {
accountCache = ac;
log = l;
userFactory = uf;
}
@Override
public boolean authenticate(final String username, final String password,
final ServerSession session) {
final SshSession sd = session.getAttribute(SshSession.KEY);
AccountState state = accountCache.getByUsername(username);
if (state == null) {
sd.authenticationError(username, "user-not-found");
return false;
}
final String p = state.getPassword(username);
if (p == null) {
sd.authenticationError(username, "no-password");
return false;
}
if (!p.equals(password)) {
sd.authenticationError(username, "incorrect-password");
return false;
}
if (sd.getCurrentUser() == null) {
sd.authenticationSuccess(username, createUser(sd, state));
// If this is the first time we've authenticated this
// session, record a login event in the log and add
// a close listener to record a logout event.
//
Context ctx = new Context(sd, null);
Context old = SshScope.set(ctx);
try {
log.onLogin();
} finally {
SshScope.set(old);
}
session.getIoSession().getCloseFuture().addListener(
new IoFutureListener<IoFuture>() {
@Override
public void operationComplete(IoFuture future) {
final Context ctx = new Context(sd, null);
final Context old = SshScope.set(ctx);
try {
log.onLogout();
} finally {
SshScope.set(old);
}
}
});
}
return true;
}
private IdentifiedUser createUser(final SshSession sd,
final AccountState state) {
return userFactory.create(AccessPath.SSH_COMMAND,
new Provider<SocketAddress>() {
@Override
public SocketAddress get() {
return sd.getRemoteAddress();
}
}, state.getAccount().getId());
}
}
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