| // Copyright (C) 2015 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.commands; |
| |
| import static com.google.gerrit.sshd.CommandMetaData.Mode.MASTER_OR_SLAVE; |
| |
| import com.google.gerrit.common.data.GlobalCapability; |
| import com.google.gerrit.extensions.annotations.RequiresCapability; |
| import com.google.gerrit.sshd.AdminHighPriorityCommand; |
| import com.google.gerrit.sshd.CommandMetaData; |
| import com.google.gerrit.sshd.SshCommand; |
| import com.google.gerrit.sshd.SshDaemon; |
| import com.google.gerrit.sshd.SshSession; |
| import com.google.inject.Inject; |
| |
| import org.apache.sshd.common.future.CloseFuture; |
| import org.apache.sshd.common.io.IoAcceptor; |
| import org.apache.sshd.common.io.IoSession; |
| import org.apache.sshd.server.session.ServerSession; |
| import org.kohsuke.args4j.Argument; |
| import org.kohsuke.args4j.Option; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** Close specified SSH connections */ |
| @AdminHighPriorityCommand |
| @RequiresCapability(GlobalCapability.ADMINISTRATE_SERVER) |
| @CommandMetaData(name = "close-connection", |
| description = "Close the specified SSH connection", runsAt = MASTER_OR_SLAVE) |
| final class CloseConnection extends SshCommand { |
| |
| private static final Logger log = LoggerFactory.getLogger(CloseConnection.class); |
| |
| @Inject |
| private SshDaemon sshDaemon; |
| |
| @Argument(index = 0, multiValued = true, required = true, |
| metaVar = "SESSION_ID", usage = "List of SSH session IDs to be closed") |
| private final List<String> sessionIds = new ArrayList<>(); |
| |
| @Option(name = "--wait", |
| usage = "wait for connection to close before exiting") |
| private boolean wait; |
| |
| @Override |
| protected void run() throws Failure { |
| IoAcceptor acceptor = sshDaemon.getIoAcceptor(); |
| if (acceptor == null) { |
| throw new Failure(1, "fatal: sshd no longer running"); |
| } |
| for (String sessionId : sessionIds) { |
| boolean connectionFound = false; |
| int id = (int) Long.parseLong(sessionId, 16); |
| for (IoSession io : acceptor.getManagedSessions().values()) { |
| ServerSession serverSession = |
| (ServerSession) ServerSession.getSession(io, true); |
| SshSession sshSession = |
| serverSession != null |
| ? serverSession.getAttribute(SshSession.KEY) |
| : null; |
| if (sshSession != null && sshSession.getSessionId() == id) { |
| connectionFound = true; |
| stdout.println("closing connection " + sessionId + "..."); |
| CloseFuture future = io.close(true); |
| if (wait) { |
| try { |
| future.await(); |
| stdout.println("closed connection " + sessionId); |
| } catch (InterruptedException e) { |
| log.warn("Wait for connection to close interrupted: " |
| + e.getMessage()); |
| } |
| } |
| break; |
| } |
| } |
| if (!connectionFound) { |
| stderr.print("close connection " + sessionId + ": no such connection\n"); |
| } |
| } |
| } |
| } |