| // Copyright (C) 2009 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 com.google.gerrit.server.CurrentUser; |
| import com.google.gerrit.server.IdentifiedUser; |
| import com.google.gerrit.server.util.IdGenerator; |
| import com.google.gerrit.sshd.AdminCommand; |
| import com.google.gerrit.sshd.BaseCommand; |
| import com.google.gerrit.sshd.SshDaemon; |
| import com.google.gerrit.sshd.SshSession; |
| import com.google.inject.Inject; |
| |
| import org.apache.mina.core.service.IoAcceptor; |
| import org.apache.mina.core.session.IoSession; |
| import org.apache.sshd.server.Environment; |
| import org.apache.sshd.server.session.ServerSession; |
| import org.kohsuke.args4j.Option; |
| |
| import java.io.PrintWriter; |
| import java.net.InetAddress; |
| import java.net.InetSocketAddress; |
| import java.net.SocketAddress; |
| import java.text.SimpleDateFormat; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.Comparator; |
| import java.util.Date; |
| import java.util.List; |
| |
| /** Show the current SSH connections. */ |
| @AdminCommand |
| final class AdminShowConnections extends BaseCommand { |
| @Option(name = "--numeric", aliases = {"-n"}, usage = "don't resolve names") |
| private boolean numeric; |
| |
| private PrintWriter p; |
| |
| @Inject |
| private SshDaemon daemon; |
| |
| @Override |
| public void start(final Environment env) { |
| startThread(new CommandRunnable() { |
| @Override |
| public void run() throws Exception { |
| parseCommandLine(); |
| AdminShowConnections.this.display(); |
| } |
| }); |
| } |
| |
| private void display() throws Failure { |
| p = toPrintWriter(out); |
| |
| final IoAcceptor acceptor = daemon.getIoAcceptor(); |
| if (acceptor == null) { |
| throw new Failure(1, "fatal: sshd no longer running"); |
| } |
| |
| final List<IoSession> list = |
| new ArrayList<IoSession>(acceptor.getManagedSessions().values()); |
| Collections.sort(list, new Comparator<IoSession>() { |
| @Override |
| public int compare(IoSession arg0, IoSession arg1) { |
| if (arg0.getCreationTime() < arg1.getCreationTime()) { |
| return -1; |
| } else if (arg0.getCreationTime() > arg1.getCreationTime()) { |
| return 1; |
| } |
| return (int) (arg0.getId() - arg1.getId()); |
| } |
| }); |
| |
| final long now = System.currentTimeMillis(); |
| p.print(String.format("%-8s %8s %8s %-15s %s\n", // |
| "Session", "Start", "Idle", "User", "Remote Host")); |
| p.print("--------------------------------------------------------------\n"); |
| for (final IoSession io : list) { |
| ServerSession s = (ServerSession) ServerSession.getSession(io, true); |
| SshSession sd = s != null ? s.getAttribute(SshSession.KEY) : null; |
| |
| final SocketAddress remoteAddress = io.getRemoteAddress(); |
| final long start = io.getCreationTime(); |
| final long idle = now - io.getLastIoTime(); |
| |
| p.print(String.format("%8s %8s %8s %-15.15s %.30s\n", // |
| id(sd), // |
| time(now, start), // |
| age(idle), // |
| username(sd), // |
| hostname(remoteAddress))); |
| } |
| p.print("--\n"); |
| |
| p.flush(); |
| } |
| |
| private static String id(final SshSession sd) { |
| return sd != null ? IdGenerator.format(sd.getSessionId()) : ""; |
| } |
| |
| private static String time(final long now, final long time) { |
| if (time - now < 24 * 60 * 60 * 1000L) { |
| return new SimpleDateFormat("HH:mm:ss").format(new Date(time)); |
| } |
| return new SimpleDateFormat("MMM-dd").format(new Date(time)); |
| } |
| |
| private static String age(long age) { |
| age /= 1000; |
| |
| final int sec = (int) (age % 60); |
| age /= 60; |
| |
| final int min = (int) (age % 60); |
| age /= 60; |
| |
| final int hr = (int) (age % 60); |
| return String.format("%02d:%02d:%02d", hr, min, sec); |
| } |
| |
| private String username(final SshSession sd) { |
| if (sd == null) { |
| return ""; |
| } |
| |
| final CurrentUser user = sd.getCurrentUser(); |
| if (user instanceof IdentifiedUser) { |
| IdentifiedUser u = (IdentifiedUser) user; |
| |
| if (!numeric) { |
| String name = u.getAccount().getUserName(); |
| if (name != null && !name.isEmpty()) { |
| return name; |
| } |
| } |
| |
| return "a/" + u.getAccountId().toString(); |
| |
| } else { |
| return ""; |
| } |
| } |
| |
| private String hostname(final SocketAddress remoteAddress) { |
| if (remoteAddress == null) { |
| return "?"; |
| } |
| String host = null; |
| if (remoteAddress instanceof InetSocketAddress) { |
| final InetSocketAddress sa = (InetSocketAddress) remoteAddress; |
| final InetAddress in = sa.getAddress(); |
| if (numeric) { |
| return in.getHostAddress(); |
| } |
| if (in != null) { |
| host = in.getCanonicalHostName(); |
| } else { |
| host = sa.getHostName(); |
| } |
| } |
| if (host == null) { |
| host = remoteAddress.toString(); |
| } |
| return host; |
| } |
| } |