[14627] | 1 | /******************************************************************************
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| 2 | *
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| 3 | * Copyright (c) 1998,99 by Mindbright Technology AB, Stockholm, Sweden.
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| 4 | * www.mindbright.se, [email protected]
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| 5 | *
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| 6 | * This program is free software; you can redistribute it and/or modify
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| 7 | * it under the terms of the GNU General Public License as published by
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| 8 | * the Free Software Foundation; either version 2 of the License, or
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| 9 | * (at your option) any later version.
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| 10 | *
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| 11 | * This program is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | * GNU General Public License for more details.
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| 15 | *
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| 16 | *****************************************************************************
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| 17 | * $Author: mats $
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| 18 | * $Date: 2000/04/04 09:34:12 $
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| 19 | * $Name: rel1-2-1 $
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| 20 | *****************************************************************************/
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| 21 | package mindbright.ssh;
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| 22 |
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| 23 | import java.net.*;
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| 24 | import java.io.*;
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| 25 | import java.math.BigInteger;
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| 26 | import java.util.Vector;
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| 27 |
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| 28 | import mindbright.security.*;
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| 29 | import mindbright.terminal.*;
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| 30 |
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| 31 | /**
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| 32 | * This class contains the main functionality for setting up a connection to a
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| 33 | * ssh-server. It can be used both to implement a "full" ssh-client, or it can
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| 34 | * be used to fire off a singe command on the server (both in a background
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| 35 | * thread and in the current-/foreground-thread). A set of properties can be
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| 36 | * used to control different aspects of the connection. These are fetched from
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| 37 | * an object implementing the <code>SSHClientUser</code>-interface. The
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| 38 | * authentication can be done in different ways, all which is handled through an
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| 39 | * object implementing the <code>SSHAuthenticator</code>-interface. The
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| 40 | * console-output of the <code>SSHClient</code> is (optionally) handled through
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| 41 | * an object implementing the <code>SSHConsole</code>-interface. <p>
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| 42 | *
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| 43 | * A class realizing a full interactive ssh-client is
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| 44 | * <code>SSHInteractiveClient</code>. The <code>SSHClient</code>-class
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| 45 | * is also used transparently from the <code>SSHSocket</code>- and <code>SSHServerSocket</code>-
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| 46 | * classes (through the <code>SSHSocketFactory</code>- and <code>SSHSocketImpl</code>-classes).
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| 47 | *
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| 48 | * @author Mats Andersson
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| 49 | * @version 0.96, 26/11/98
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| 50 | * @see SSHAuthenticator
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| 51 | * @see SSHClientUser
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| 52 | * @see SSHConsole
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| 53 | * @see SSHSocketFactory
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| 54 | * @see SSHSocketImpl */
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| 55 | public class SSHClient extends SSH {
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| 56 |
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| 57 | static public class AuthFailException extends IOException {
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| 58 | public AuthFailException(String msg) {
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| 59 | super(msg);
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| 60 | }
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| 61 | }
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| 62 |
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| 63 | static public class ExitMonitor implements Runnable {
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| 64 | SSHClient client;
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| 65 | long msTimeout;
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| 66 | public ExitMonitor(SSHClient client, long msTimeout) {
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| 67 | this.msTimeout = msTimeout;
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| 68 | this.client = client;
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| 69 | }
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| 70 | public ExitMonitor(SSHClient client) {
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| 71 | this(client, 0);
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| 72 | }
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| 73 | public void run() {
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| 74 | client.waitForExit(msTimeout);
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| 75 | // If we have allready exited gracefully don't report...
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| 76 | //
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| 77 | if(!client.gracefulExit)
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| 78 | client.disconnect(false);
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| 79 | }
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| 80 | }
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| 81 |
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| 82 | private class KeepAliveThread extends Thread {
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| 83 | int interval;
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| 84 | public KeepAliveThread(int i) {
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| 85 | super();
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| 86 | interval = i;
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| 87 | }
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| 88 | public synchronized void setInterval(int i) {
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| 89 | interval = i;
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| 90 | }
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| 91 | public void run() {
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| 92 | int i;
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| 93 | SSHPduOutputStream ignmsg;
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| 94 | while(true) {
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| 95 | try {
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| 96 | synchronized(this) {
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| 97 | i = interval;
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| 98 | }
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| 99 | sleep(1000 * i);
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| 100 | if(SSHClient.this.controller != null) {
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| 101 | ignmsg = new SSHPduOutputStream(MSG_DEBUG, controller.sndCipher);
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| 102 | ignmsg.writeString("heartbeat");
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| 103 | controller.transmit(ignmsg);
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| 104 | }
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| 105 | } catch (Exception e) {
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| 106 | // !!!
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| 107 | }
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| 108 | }
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| 109 | }
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| 110 | }
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| 111 |
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| 112 | // Local port forwarding
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| 113 | //
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| 114 | public static class LocalForward {
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| 115 | protected String localHost;
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| 116 | protected int localPort;
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| 117 | protected String remoteHost;
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| 118 | protected int remotePort;
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| 119 | protected String plugin;
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| 120 | public LocalForward(String localHost, int localPort, String remoteHost, int remotePort, String plugin) {
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| 121 | this.localHost = localHost;
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| 122 | this.localPort = localPort;
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| 123 | this.remoteHost = remoteHost;
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| 124 | this.remotePort = remotePort;
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| 125 | this.plugin = plugin;
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| 126 | }
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| 127 | }
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| 128 |
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| 129 | // Remote port forwarding
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| 130 | //
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| 131 | public static class RemoteForward {
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| 132 | protected int remotePort;
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| 133 | protected String localHost;
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| 134 | protected int localPort;
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| 135 | protected String plugin;
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| 136 | public RemoteForward(int remotePort, String localHost, int localPort, String plugin) {
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| 137 | this.remotePort = remotePort;
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| 138 | this.localHost = localHost;
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| 139 | this.localPort = localPort;
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| 140 | this.plugin = plugin;
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| 141 | }
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| 142 | }
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| 143 |
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| 144 | protected Thread myThread;
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| 145 | protected KeepAliveThread keepAliveThread;
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| 146 |
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| 147 | protected InetAddress serverAddr;
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| 148 | protected InetAddress serverRealAddr = null;
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| 149 | protected InetAddress localAddr;
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| 150 | protected String srvVersionStr;
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| 151 | protected int srvVersionMajor;
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| 152 | protected int srvVersionMinor;
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| 153 |
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| 154 | protected Vector localForwards;
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| 155 | protected Vector remoteForwards;
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| 156 | protected String commandLine;
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| 157 |
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| 158 | protected SSHChannelController controller;
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| 159 | protected SSHConsole console;
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| 160 | protected SSHAuthenticator authenticator;
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| 161 | protected SSHClientUser user;
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| 162 | protected SSHInteractor interactor;
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| 163 |
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| 164 | protected Socket sshSocket;
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| 165 | protected BufferedInputStream sshIn;
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| 166 | protected BufferedOutputStream sshOut;
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| 167 |
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| 168 | protected boolean gracefulExit;
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| 169 | protected boolean isConnected;
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| 170 | protected boolean isOpened;
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| 171 |
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| 172 | boolean usedOTP;
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| 173 |
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| 174 | protected int refCount;
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| 175 |
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| 176 | // !!! KLUDGE
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| 177 | protected boolean havePORTFtp = false;
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| 178 | protected int firstFTPPort = 0;
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| 179 | protected boolean activateTunnels = true;
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| 180 | // !!! KLUDGE
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| 181 |
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| 182 | public SSHClient(SSHAuthenticator authenticator, SSHClientUser user) {
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| 183 | this.user = user;
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| 184 | this.authenticator = authenticator;
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| 185 | this.interactor = user.getInteractor();
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| 186 | this.srvVersionStr = null;
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| 187 | this.refCount = 0;
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| 188 | this.usedOTP = false;
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| 189 |
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| 190 | try {
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| 191 | this.localAddr = InetAddress.getByName("0.0.0.0");
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| 192 | } catch (UnknownHostException e) {
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| 193 | if(interactor != null)
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| 194 | interactor.alert("FATAL: Could not create local InetAddress: " + e.getMessage());
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| 195 | }
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| 196 | clearAllForwards();
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| 197 | }
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| 198 |
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| 199 | public void setConsole(SSHConsole console) {
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| 200 | this.console = console;
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| 201 | if(controller != null)
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| 202 | controller.console = console;
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| 203 | }
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| 204 |
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| 205 | public SSHConsole getConsole() {
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| 206 | return console;
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| 207 | }
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| 208 |
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| 209 | public InetAddress getServerAddr() {
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| 210 | return serverAddr;
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| 211 | }
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| 212 |
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| 213 | public InetAddress getServerRealAddr() {
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| 214 | if(serverRealAddr == null)
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| 215 | return serverAddr;
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| 216 | return serverRealAddr;
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| 217 | }
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| 218 |
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| 219 | public void setServerRealAddr(InetAddress realAddr) {
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| 220 | serverRealAddr = realAddr;
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| 221 | }
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| 222 |
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| 223 | public InetAddress getLocalAddr() {
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| 224 | return localAddr;
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| 225 | }
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| 226 |
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| 227 | public void setLocalAddr(String addr) throws UnknownHostException {
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| 228 | localAddr = InetAddress.getByName(addr);
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| 229 | }
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| 230 |
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| 231 | public String getServerVersion() {
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| 232 | return srvVersionStr;
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| 233 | }
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| 234 |
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| 235 | public void addLocalPortForward(int localPort, String remoteHost, int remotePort, String plugin)
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| 236 | throws IOException {
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| 237 | addLocalPortForward(localAddr.getHostAddress(), localPort, remoteHost, remotePort, plugin);
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| 238 | }
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| 239 | public void addLocalPortForward(String localHost, int localPort, String remoteHost, int remotePort, String plugin)
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| 240 | throws IOException {
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| 241 | delLocalPortForward(localHost, localPort);
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| 242 | localForwards.addElement(new LocalForward(localHost, localPort, remoteHost, remotePort, plugin));
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| 243 | if(isOpened) {
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| 244 | try {
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| 245 | requestLocalPortForward(localHost, localPort, remoteHost, remotePort, plugin);
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| 246 | } catch(IOException e) {
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| 247 | delLocalPortForward(localHost, localPort);
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| 248 | throw e;
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| 249 | }
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| 250 | }
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| 251 | }
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| 252 |
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| 253 | public void delLocalPortForward(String localHost, int port) {
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| 254 | if(port == -1) {
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| 255 | if(isOpened)
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| 256 | controller.killListenChannels();
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| 257 | localForwards = new Vector();
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| 258 | } else {
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| 259 | for(int i = 0; i < localForwards.size(); i++) {
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| 260 | LocalForward fwd = (LocalForward) localForwards.elementAt(i);
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| 261 | if(fwd.localPort == port && fwd.localHost.equals(localHost)) {
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| 262 | localForwards.removeElementAt(i);
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| 263 | if(isOpened)
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| 264 | controller.killListenChannel(fwd.localHost, fwd.localPort);
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| 265 | break;
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| 266 | }
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| 267 | }
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| 268 | }
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| 269 | }
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| 270 |
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| 271 | public void addRemotePortForward(int remotePort, String localHost, int localPort, String plugin) {
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| 272 | delRemotePortForward(remotePort);
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| 273 | remoteForwards.addElement(new RemoteForward(remotePort, localHost, localPort, plugin));
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| 274 | }
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| 275 |
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| 276 | public void delRemotePortForward(int port) {
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| 277 | if(port == -1) {
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| 278 | remoteForwards = new Vector();
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| 279 | } else {
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| 280 | for(int i = 0; i < remoteForwards.size(); i++) {
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| 281 | RemoteForward fwd = (RemoteForward) remoteForwards.elementAt(i);
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| 282 | if(fwd.remotePort == port) {
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| 283 | remoteForwards.removeElementAt(i);
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| 284 | break;
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| 285 | }
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| 286 | }
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| 287 | }
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| 288 | }
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| 289 |
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| 290 | public void delRemotePortForward(String plugin) {
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| 291 | for(int i = 0; i < remoteForwards.size(); i++) {
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| 292 | RemoteForward fwd = (RemoteForward) remoteForwards.elementAt(i);
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| 293 | if(fwd.plugin.equals(plugin)) {
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| 294 | remoteForwards.removeElementAt(i);
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| 295 | i--;
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| 296 | }
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| 297 | }
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| 298 | }
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| 299 |
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| 300 | public void clearAllForwards() {
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| 301 | this.localForwards = new Vector();
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| 302 | this.remoteForwards = new Vector();
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| 303 | }
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| 304 |
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| 305 | public void startExitMonitor() {
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| 306 | startExitMonitor(0);
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| 307 | }
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| 308 |
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| 309 | public void startExitMonitor(long msTimeout) {
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| 310 | (new Thread(new ExitMonitor(this, msTimeout))).start();
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| 311 | }
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| 312 |
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| 313 | public synchronized int addRef() {
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| 314 | return ++refCount;
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| 315 | }
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| 316 |
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| 317 | public void forcedDisconnect() {
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| 318 | if(controller != null)
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| 319 | controller.sendDisconnect("exit");
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| 320 | else if(interactor != null)
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| 321 | interactor.disconnected(this, false);
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| 322 | }
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| 323 |
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| 324 | public synchronized int delRef() {
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| 325 | if(--refCount <= 0) {
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| 326 | forcedDisconnect();
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| 327 | waitForExit(2000);
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| 328 | }
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| 329 | return refCount;
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| 330 | }
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| 331 |
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| 332 | public void waitForExit(long msTimeout) {
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| 333 | try {
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| 334 | controller.waitForExit(msTimeout);
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| 335 | } catch(InterruptedException e) {
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| 336 | if(interactor != null)
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| 337 | interactor.alert("Error when shutting down SSHClient: " + e.getMessage());
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| 338 | controller.killAll();
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| 339 | }
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| 340 | try {
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| 341 | if(sshSocket != null)
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| 342 | sshSocket.close();
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| 343 | } catch (IOException e) {
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| 344 | // !!!
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| 345 | }
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| 346 | }
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| 347 |
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| 348 | public void doSingleCommand(String commandLine, boolean background, long msTimeout)
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| 349 | throws IOException {
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| 350 | this.commandLine = commandLine;
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| 351 | bootSSH(false);
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| 352 | if(background)
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| 353 | startExitMonitor(msTimeout);
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| 354 | else
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| 355 | waitForExit(msTimeout);
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| 356 | }
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| 357 |
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| 358 | public void bootSSH(boolean haveCnxWatch) throws IOException {
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| 359 | try {
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| 360 | myThread = Thread.currentThread();
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| 361 |
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| 362 | // Give the interactor a chance to hold us until the user wants to
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| 363 | // "connect" (e.g. with a dialog with server, username, password,
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| 364 | // proxy-info)
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| 365 | //
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| 366 | if(interactor != null)
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| 367 | interactor.startNewSession(this);
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| 368 |
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| 369 | // We first ask for the ssh server address since this might
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| 370 | // typically be a prompt in the SSHClientUser
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| 371 | //
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| 372 | String serverAddrStr = user.getSrvHost();
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| 373 |
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| 374 | // When the SSHClientUser has reported which host to connect to we report
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| 375 | // this to the interactor as sessionStarted
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| 376 | //
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| 377 | if(interactor != null)
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| 378 | interactor.sessionStarted(this);
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| 379 |
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| 380 | // It's the responsibility of the SSHClientUser to establish a proxied
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| 381 | // connection if that is needed, the SSHClient does not want to know about
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| 382 | // proxies. If a proxy is not needed getProxyConnection() just returns
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| 383 | // null.
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| 384 | //
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| 385 | sshSocket = user.getProxyConnection();
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| 386 |
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| 387 | if(sshSocket == null) {
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| 388 | serverAddr = InetAddress.getByName(serverAddrStr);
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| 389 | if(user.wantPrivileged()) {
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| 390 | int p;
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| 391 | for(p = 1023; p > 512; p--) {
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| 392 | try {
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| 393 | sshSocket = new Socket(serverAddr, user.getSrvPort(), localAddr, p);
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| 394 | } catch (IOException e) {
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| 395 | if(e.getMessage().toLowerCase().indexOf("use") == -1)
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| 396 | throw e;
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| 397 | continue;
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| 398 | }
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| 399 | break;
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| 400 | }
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| 401 | if(p == 512)
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| 402 | throw new IOException("No available privileged ports");
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| 403 | } else {
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| 404 | sshSocket = new Socket(serverAddr, user.getSrvPort());
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| 405 | }
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| 406 | } else {
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| 407 | serverAddr = sshSocket.getInetAddress();
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| 408 | if(interactor != null)
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| 409 | interactor.report("Connecting through proxy at " + serverAddr.getHostAddress() +
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| 410 | ":" + sshSocket.getPort());
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| 411 | }
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| 412 |
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| 413 | sshIn = new BufferedInputStream(sshSocket.getInputStream(), 8192);
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| 414 | sshOut = new BufferedOutputStream(sshSocket.getOutputStream());
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| 415 |
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| 416 | negotiateVersion();
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| 417 |
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| 418 | // We now have a physical connection to a sshd, report this to the SSHClientUser
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| 419 | //
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| 420 | isConnected = true;
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| 421 | if(interactor != null)
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| 422 | interactor.connected(this);
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| 423 |
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| 424 | String userName = authenticator.getUsername(user);
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| 425 |
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| 426 | receiveServerData();
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| 427 |
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| 428 | initiatePlugins();
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| 429 |
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| 430 | cipherType = authenticator.getCipher(user);
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| 431 |
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| 432 | // Check that selected cipher is supported by server
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| 433 | //
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| 434 | if(!isCipherSupported(cipherType))
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| 435 | throw new IOException("Sorry, server does not support the '" +
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| 436 | getCipherName(authenticator.getCipher(user)) + "' cipher.");
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| 437 |
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| 438 | generateSessionId();
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| 439 | generateSessionKey();
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| 440 |
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| 441 | initClientCipher();
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| 442 |
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| 443 | sendSessionKey(cipherType);
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| 444 |
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| 445 | // !!!
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| 446 | // At this stage the communication is encrypted
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| 447 | // !!!
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| 448 |
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| 449 | authenticateUser(userName);
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| 450 |
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| 451 | controller = new SSHChannelController(this, sshIn, sshOut, sndCipher, rcvCipher,
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| 452 | console, haveCnxWatch);
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| 453 | initiateSession();
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| 454 | if(console != null)
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| 455 | console.serverConnect(controller, sndCipher);
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| 456 |
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| 457 | // We now open the SSH-protocol fully, report to SSHClientUser
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| 458 | //
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| 459 | isOpened = true;
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| 460 | if(interactor != null)
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| 461 | interactor.open(this);
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| 462 |
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| 463 | // Start "heartbeat" if needed
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| 464 | //
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| 465 | setAliveInterval(user.getAliveInterval());
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| 466 |
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| 467 | controller.start();
|
---|
| 468 |
|
---|
| 469 | } catch (IOException e) {
|
---|
| 470 | if(sshSocket != null)
|
---|
| 471 | sshSocket.close();
|
---|
| 472 | disconnect(false);
|
---|
| 473 | if(controller != null) {
|
---|
| 474 | controller.killListenChannels();
|
---|
| 475 | }
|
---|
| 476 | controller = null;
|
---|
| 477 | throw e;
|
---|
| 478 | }
|
---|
| 479 | }
|
---|
| 480 |
|
---|
| 481 | protected void disconnect(boolean graceful) {
|
---|
| 482 | if(!isConnected)
|
---|
| 483 | return;
|
---|
| 484 | isConnected = false;
|
---|
| 485 | isOpened = false;
|
---|
| 486 | gracefulExit = graceful;
|
---|
| 487 | srvVersionStr = null;
|
---|
| 488 | setAliveInterval(0); // Stop "heartbeat"...
|
---|
| 489 | if(interactor != null)
|
---|
| 490 | interactor.disconnected(this, graceful);
|
---|
| 491 | }
|
---|
| 492 |
|
---|
| 493 | void negotiateVersion() throws IOException {
|
---|
| 494 | byte[] buf = new byte[256];
|
---|
| 495 | int len;
|
---|
| 496 | String verStr;
|
---|
| 497 |
|
---|
| 498 | len = sshIn.read(buf);
|
---|
| 499 |
|
---|
| 500 | srvVersionStr = new String(buf, 0, len);
|
---|
| 501 |
|
---|
| 502 | try {
|
---|
| 503 | int l = srvVersionStr.indexOf('-');
|
---|
| 504 | int r = srvVersionStr.indexOf('.');
|
---|
| 505 | srvVersionMajor = Integer.parseInt(srvVersionStr.substring(l + 1, r));
|
---|
| 506 | l = r;
|
---|
| 507 | r = srvVersionStr.indexOf('-', l);
|
---|
| 508 | if(r == -1) {
|
---|
| 509 | srvVersionMinor = Integer.parseInt(srvVersionStr.substring(l + 1));
|
---|
| 510 | } else {
|
---|
| 511 | srvVersionMinor = Integer.parseInt(srvVersionStr.substring(l + 1, r));
|
---|
| 512 | }
|
---|
| 513 | } catch (Throwable t) {
|
---|
| 514 | throw new IOException("Server version string invalid: " + srvVersionStr);
|
---|
| 515 | }
|
---|
| 516 |
|
---|
| 517 | if(srvVersionMajor > 1) {
|
---|
| 518 | throw new IOException("MindTerm do not support SSHv2 yet, enable SSHv1 compatibility in server");
|
---|
| 519 | } else if(srvVersionMajor < 1 || srvVersionMinor < 5) {
|
---|
| 520 | throw new IOException("Server's protocol version (" + srvVersionMajor + "-" +
|
---|
| 521 | srvVersionMinor + ") is too old, please upgrade");
|
---|
| 522 | }
|
---|
| 523 |
|
---|
| 524 | // Strip white-space
|
---|
| 525 | srvVersionStr = srvVersionStr.trim();
|
---|
| 526 |
|
---|
| 527 | verStr = getVersionId(true);
|
---|
| 528 | verStr += "\n";
|
---|
| 529 | buf = verStr.getBytes();
|
---|
| 530 |
|
---|
| 531 | sshOut.write(buf);
|
---|
| 532 | sshOut.flush();
|
---|
| 533 | }
|
---|
| 534 |
|
---|
| 535 | void receiveServerData() throws IOException {
|
---|
| 536 | SSHPduInputStream pdu = new SSHPduInputStream(SMSG_PUBLIC_KEY, null);
|
---|
| 537 | pdu.readFrom(sshIn);
|
---|
| 538 | int bits;
|
---|
| 539 | BigInteger e, n;
|
---|
| 540 |
|
---|
| 541 | srvCookie = new byte[8];
|
---|
| 542 | pdu.read(srvCookie, 0, 8);
|
---|
| 543 |
|
---|
| 544 | bits = pdu.readInt();
|
---|
| 545 | e = pdu.readBigInteger();
|
---|
| 546 | n = pdu.readBigInteger();
|
---|
| 547 | srvServerKey = new KeyPair(new RSAPublicKey(e, n), null);
|
---|
| 548 |
|
---|
| 549 | bits = pdu.readInt();
|
---|
| 550 | e = pdu.readBigInteger();
|
---|
| 551 | n = pdu.readBigInteger();
|
---|
| 552 | srvHostKey = new KeyPair(new RSAPublicKey(e, n), null);
|
---|
| 553 |
|
---|
| 554 | int keyLenDiff = Math.abs(((RSAPublicKey)srvServerKey.getPublic()).bitLength() -
|
---|
| 555 | ((RSAPublicKey)srvHostKey.getPublic()).bitLength());
|
---|
| 556 |
|
---|
| 557 | if(keyLenDiff < 24) {
|
---|
| 558 | throw new IOException("Invalid server keys, difference in sizes must be at least 24 bits");
|
---|
| 559 | }
|
---|
| 560 |
|
---|
| 561 | if(!authenticator.verifyKnownHosts((RSAPublicKey)srvHostKey.getPublic())) {
|
---|
| 562 | throw new IOException("Verification of known hosts failed");
|
---|
| 563 | }
|
---|
| 564 |
|
---|
| 565 | protocolFlags = pdu.readInt();
|
---|
| 566 | supportedCiphers = pdu.readInt();
|
---|
| 567 | supportedAuthTypes = pdu.readInt();
|
---|
| 568 |
|
---|
| 569 | // OUCH: Support SDI patch from ftp://ftp.parc.xerox.com://pub/jean/sshsdi/
|
---|
| 570 | // (we want the types to be in sequence for simplicity, kludge but simple)
|
---|
| 571 | //
|
---|
| 572 | if((supportedAuthTypes & (1 << 16)) != 0) {
|
---|
| 573 | supportedAuthTypes = ((supportedAuthTypes & 0xffff) | (1 << AUTH_SDI));
|
---|
| 574 | }
|
---|
| 575 | }
|
---|
| 576 |
|
---|
| 577 | void generateSessionKey() {
|
---|
| 578 | SecureRandom rand = secureRandom();
|
---|
| 579 | sessionKey = new byte[SESSION_KEY_LENGTH / 8];
|
---|
| 580 | rand.nextBytes(sessionKey);
|
---|
| 581 | rand.startUpdater();
|
---|
| 582 | }
|
---|
| 583 |
|
---|
| 584 | void sendSessionKey(int cipherType) throws IOException {
|
---|
| 585 | byte[] key = new byte[sessionKey.length + 1];
|
---|
| 586 | BigInteger encKey;
|
---|
| 587 | RSACipher rsa;
|
---|
| 588 | SSHPduOutputStream pdu;
|
---|
| 589 |
|
---|
| 590 | key[0] = 0;
|
---|
| 591 | System.arraycopy(sessionKey, 0, key, 1, sessionKey.length);
|
---|
| 592 |
|
---|
| 593 | for(int i = 0; i < sessionId.length; i++)
|
---|
| 594 | key[i + 1] ^= sessionId[i];
|
---|
| 595 |
|
---|
| 596 | encKey = new BigInteger(key);
|
---|
| 597 |
|
---|
| 598 | if(((RSAPublicKey)(srvServerKey.getPublic())).bitLength() <
|
---|
| 599 | ((RSAPublicKey)(srvHostKey.getPublic())).bitLength()) {
|
---|
| 600 | BigInteger padded;
|
---|
| 601 | rsa = new RSACipher(srvServerKey);
|
---|
| 602 | padded = rsa.doPad(encKey, ((RSAPublicKey)srvServerKey.getPublic()).bitLength(), secureRandom());
|
---|
| 603 | encKey = rsa.doPublic(padded);
|
---|
| 604 | rsa = new RSACipher(srvHostKey);
|
---|
| 605 | padded = rsa.doPad(encKey, ((RSAPublicKey)srvHostKey.getPublic()).bitLength(), secureRandom());
|
---|
| 606 | encKey = rsa.doPublic(padded);
|
---|
| 607 | } else {
|
---|
| 608 | BigInteger padded;
|
---|
| 609 | rsa = new RSACipher(srvHostKey);
|
---|
| 610 | padded = rsa.doPad(encKey, ((RSAPublicKey)srvHostKey.getPublic()).bitLength(), secureRandom());
|
---|
| 611 | encKey = rsa.doPublic(padded);
|
---|
| 612 | rsa = new RSACipher(srvServerKey);
|
---|
| 613 | padded = rsa.doPad(encKey, ((RSAPublicKey)srvServerKey.getPublic()).bitLength(), secureRandom());
|
---|
| 614 | encKey = rsa.doPublic(padded);
|
---|
| 615 | }
|
---|
| 616 |
|
---|
| 617 | pdu = new SSHPduOutputStream(CMSG_SESSION_KEY, null);
|
---|
| 618 | pdu.writeByte((byte)cipherType);
|
---|
| 619 | pdu.write(srvCookie, 0, srvCookie.length);
|
---|
| 620 | pdu.writeBigInteger(encKey);
|
---|
| 621 | // !!! TODO: check this pdu.writeInt(PROTOFLAG_SCREEN_NUMBER | PROTOFLAG_HOST_IN_FWD_OPEN);
|
---|
| 622 | pdu.writeInt(protocolFlags);
|
---|
| 623 | pdu.writeTo(sshOut);
|
---|
| 624 |
|
---|
| 625 | // !!!
|
---|
| 626 | // At this stage the communication is encrypted
|
---|
| 627 | // !!!
|
---|
| 628 |
|
---|
| 629 | if(!isSuccess())
|
---|
| 630 | throw new IOException("Error while sending session key!");
|
---|
| 631 | }
|
---|
| 632 |
|
---|
| 633 | void authenticateUser(String userName) throws IOException {
|
---|
| 634 | SSHPduOutputStream outpdu;
|
---|
| 635 |
|
---|
| 636 | usedOTP = false;
|
---|
| 637 |
|
---|
| 638 | outpdu = new SSHPduOutputStream(CMSG_USER, sndCipher);
|
---|
| 639 | outpdu.writeString(userName);
|
---|
| 640 | outpdu.writeTo(sshOut);
|
---|
| 641 |
|
---|
| 642 | if(isSuccess()) {
|
---|
| 643 | if(interactor != null)
|
---|
| 644 | interactor.report("Authenticated directly by server, no other authentication required");
|
---|
| 645 | return;
|
---|
| 646 | }
|
---|
| 647 |
|
---|
| 648 | int[] authType = authenticator.getAuthTypes(user);
|
---|
| 649 |
|
---|
| 650 | for(int i = 0; i < authType.length; i++) {
|
---|
| 651 | try {
|
---|
| 652 | if(!isAuthTypeSupported(authType[i])) {
|
---|
| 653 | throw new AuthFailException("Server does not support '" +
|
---|
| 654 | authTypeDesc[authType[i]] + "'");
|
---|
| 655 | }
|
---|
| 656 | switch(authType[i]) {
|
---|
| 657 | case AUTH_RSA:
|
---|
| 658 | doRSAAuth(false, userName);
|
---|
| 659 | break;
|
---|
| 660 | case AUTH_PASSWORD:
|
---|
| 661 | doPasswdAuth(userName);
|
---|
| 662 | break;
|
---|
| 663 | case AUTH_RHOSTS_RSA:
|
---|
| 664 | doRSAAuth(true, userName);
|
---|
| 665 | break;
|
---|
| 666 | case AUTH_TIS:
|
---|
| 667 | doTISAuth(userName);
|
---|
| 668 | break;
|
---|
| 669 | case AUTH_RHOSTS:
|
---|
| 670 | doRhostsAuth(userName);
|
---|
| 671 | break;
|
---|
| 672 | case AUTH_SDI:
|
---|
| 673 | doSDIAuth(userName);
|
---|
| 674 | usedOTP = true;
|
---|
| 675 | break;
|
---|
| 676 | case AUTH_KERBEROS:
|
---|
| 677 | case PASS_KERBEROS_TGT:
|
---|
| 678 | default:
|
---|
| 679 | throw new IOException("We do not support selected authentication type " +
|
---|
| 680 | authTypeDesc[authType[i]]);
|
---|
| 681 | }
|
---|
| 682 | return;
|
---|
| 683 | } catch (AuthFailException e) {
|
---|
| 684 | if(i == (authType.length - 1)) {
|
---|
| 685 | throw e;
|
---|
| 686 | }
|
---|
| 687 | if(interactor != null) {
|
---|
| 688 | interactor.report("Authenticating with " + authTypeDesc[authType[i]] + " failed, " +
|
---|
| 689 | e.getMessage());
|
---|
| 690 | }
|
---|
| 691 | }
|
---|
| 692 | }
|
---|
| 693 | }
|
---|
| 694 |
|
---|
| 695 | void doPasswdAuth(String userName) throws IOException {
|
---|
| 696 | SSHPduOutputStream outpdu;
|
---|
| 697 | String password;
|
---|
| 698 |
|
---|
| 699 | password = authenticator.getPassword(user);
|
---|
| 700 |
|
---|
| 701 | outpdu = new SSHPduOutputStream(CMSG_AUTH_PASSWORD, sndCipher);
|
---|
| 702 | outpdu.writeString(password);
|
---|
| 703 | outpdu.writeTo(sshOut);
|
---|
| 704 |
|
---|
| 705 | if(!isSuccess())
|
---|
| 706 | throw new AuthFailException("Permission denied");
|
---|
| 707 | }
|
---|
| 708 |
|
---|
| 709 | void doRhostsAuth(String userName) throws IOException {
|
---|
| 710 | SSHPduOutputStream outpdu;
|
---|
| 711 |
|
---|
| 712 | outpdu = new SSHPduOutputStream(CMSG_AUTH_RHOSTS, sndCipher);
|
---|
| 713 | outpdu.writeString(userName);
|
---|
| 714 | outpdu.writeTo(sshOut);
|
---|
| 715 |
|
---|
| 716 | if(!isSuccess())
|
---|
| 717 | throw new AuthFailException("Permission denied");
|
---|
| 718 | }
|
---|
| 719 |
|
---|
| 720 | void doTISAuth(String userName) throws IOException {
|
---|
| 721 | SSHPduOutputStream outpdu;
|
---|
| 722 | String prompt;
|
---|
| 723 | String response;
|
---|
| 724 |
|
---|
| 725 | outpdu = new SSHPduOutputStream(CMSG_AUTH_TIS, sndCipher);
|
---|
| 726 | outpdu.writeTo(sshOut);
|
---|
| 727 | SSHPduInputStream inpdu = new SSHPduInputStream(MSG_ANY, rcvCipher);
|
---|
| 728 | inpdu.readFrom(sshIn);
|
---|
| 729 |
|
---|
| 730 | if(inpdu.type == SMSG_FAILURE)
|
---|
| 731 | throw new AuthFailException("TIS authentication server not reachable or user unknown");
|
---|
| 732 | else if(inpdu.type != SMSG_AUTH_TIS_CHALLENGE)
|
---|
| 733 | throw new IOException("Protocol error, expected TIS challenge but got " + inpdu.type);
|
---|
| 734 |
|
---|
| 735 | prompt = inpdu.readString();
|
---|
| 736 | response = authenticator.getChallengeResponse(user, prompt);
|
---|
| 737 |
|
---|
| 738 | outpdu = new SSHPduOutputStream(CMSG_AUTH_TIS_RESPONSE, sndCipher);
|
---|
| 739 | outpdu.writeString(response);
|
---|
| 740 | outpdu.writeTo(sshOut);
|
---|
| 741 |
|
---|
| 742 | if(!isSuccess())
|
---|
| 743 | throw new AuthFailException("Permission denied");
|
---|
| 744 | }
|
---|
| 745 |
|
---|
| 746 | void doRSAAuth(boolean rhosts, String userName) throws IOException {
|
---|
| 747 | SSHPduOutputStream outpdu;
|
---|
| 748 | SSHRSAKeyFile keyFile = authenticator.getIdentityFile(user);
|
---|
| 749 | RSAPublicKey pubKey = keyFile.getPublic();
|
---|
| 750 |
|
---|
| 751 | if(rhosts) {
|
---|
| 752 | outpdu = new SSHPduOutputStream(CMSG_AUTH_RHOSTS_RSA, sndCipher);
|
---|
| 753 | outpdu.writeString(userName);
|
---|
| 754 | outpdu.writeInt(pubKey.bitLength());
|
---|
| 755 | outpdu.writeBigInteger(pubKey.getE());
|
---|
| 756 | outpdu.writeBigInteger(pubKey.getN());
|
---|
| 757 | } else {
|
---|
| 758 | outpdu = new SSHPduOutputStream(CMSG_AUTH_RSA, sndCipher);
|
---|
| 759 | outpdu.writeBigInteger(pubKey.getN());
|
---|
| 760 | }
|
---|
| 761 | outpdu.writeTo(sshOut);
|
---|
| 762 |
|
---|
| 763 | SSHPduInputStream inpdu = new SSHPduInputStream(MSG_ANY, rcvCipher);
|
---|
| 764 | inpdu.readFrom(sshIn);
|
---|
| 765 | if(inpdu.type == SMSG_FAILURE)
|
---|
| 766 | throw new AuthFailException("Server refused our key" + (rhosts ? " or rhosts" : ""));
|
---|
| 767 | else if(inpdu.type != SMSG_AUTH_RSA_CHALLENGE)
|
---|
| 768 | throw new IOException("Protocol error, expected RSA-challenge but got " + inpdu.type);
|
---|
| 769 |
|
---|
| 770 | BigInteger challenge = inpdu.readBigInteger();
|
---|
| 771 |
|
---|
| 772 | // First try with an empty passphrase...
|
---|
| 773 | //
|
---|
| 774 | RSAPrivateKey privKey = keyFile.getPrivate("");
|
---|
| 775 | if(privKey == null)
|
---|
| 776 | privKey = keyFile.getPrivate(authenticator.getIdentityPassword(user));
|
---|
| 777 | else if(interactor != null)
|
---|
| 778 | interactor.report("Authenticated with password-less rsa-key '" + keyFile.getComment() + "'");
|
---|
| 779 |
|
---|
| 780 | if(privKey == null)
|
---|
| 781 | throw new AuthFailException("Invalid password for key-file '" + keyFile.getComment() + "'");
|
---|
| 782 |
|
---|
| 783 | rsaChallengeResponse(privKey, challenge);
|
---|
| 784 | }
|
---|
| 785 |
|
---|
| 786 | private final static int CANNOT_CHOOSE_PIN = 0;
|
---|
| 787 | private final static int USER_SELECTABLE = 1;
|
---|
| 788 | private final static int MUST_CHOOSE_PIN = 2;
|
---|
| 789 |
|
---|
| 790 | void doSDIAuth(String userName) throws IOException {
|
---|
| 791 | SSHPduOutputStream outpdu;
|
---|
| 792 | String password;
|
---|
| 793 |
|
---|
| 794 | password = authenticator.getChallengeResponse(user, userName +
|
---|
| 795 | "'s SDI token passcode: ");
|
---|
| 796 |
|
---|
| 797 | outpdu = new SSHPduOutputStream(CMSG_AUTH_SDI, sndCipher);
|
---|
| 798 | outpdu.writeString(password);
|
---|
| 799 | outpdu.writeTo(sshOut);
|
---|
| 800 |
|
---|
| 801 | SSHPduInputStream inpdu = new SSHPduInputStream(MSG_ANY, rcvCipher);
|
---|
| 802 | inpdu.readFrom(sshIn);
|
---|
| 803 | switch(inpdu.type) {
|
---|
| 804 | case SMSG_SUCCESS:
|
---|
| 805 | interactor.report("SDI authentication accepted.");
|
---|
| 806 | break;
|
---|
| 807 |
|
---|
| 808 | case SMSG_FAILURE:
|
---|
| 809 | throw new AuthFailException("SDI authentication failed.");
|
---|
| 810 |
|
---|
| 811 | case CMSG_ACM_NEXT_CODE_REQUIRED:
|
---|
| 812 | password = interactor.promptPassword("Next token required: ");
|
---|
| 813 | outpdu = new SSHPduOutputStream(CMSG_ACM_NEXT_CODE, sndCipher);
|
---|
| 814 | outpdu.writeString(password);
|
---|
| 815 | outpdu.writeTo(sshOut);
|
---|
| 816 | if(!isSuccess())
|
---|
| 817 | throw new AuthFailException("Permission denied");
|
---|
| 818 | break;
|
---|
| 819 |
|
---|
| 820 | case CMSG_ACM_NEW_PIN_REQUIRED:
|
---|
| 821 | if(!interactor.askConfirmation("New PIN required, do you want to continue?", false))
|
---|
| 822 | throw new AuthFailException("New PIN not wanted");
|
---|
| 823 |
|
---|
| 824 | String type = inpdu.readString();
|
---|
| 825 | String size = inpdu.readString();
|
---|
| 826 | int userSelect = inpdu.readInt();
|
---|
| 827 |
|
---|
| 828 | switch(userSelect) {
|
---|
| 829 | case CANNOT_CHOOSE_PIN:
|
---|
| 830 | break;
|
---|
| 831 |
|
---|
| 832 | case USER_SELECTABLE:
|
---|
| 833 | case MUST_CHOOSE_PIN:
|
---|
| 834 | String pwdChk;
|
---|
| 835 | do {
|
---|
| 836 | password =
|
---|
| 837 | interactor.promptPassword("Please enter new PIN" +
|
---|
| 838 | " containing " + size +
|
---|
| 839 | " " + type);
|
---|
| 840 | pwdChk =
|
---|
| 841 | interactor.promptPassword("Please enter new PIN again");
|
---|
| 842 | } while (!password.equals(pwdChk));
|
---|
| 843 |
|
---|
| 844 | outpdu = new SSHPduOutputStream(CMSG_ACM_NEW_PIN, sndCipher);
|
---|
| 845 | outpdu.writeString(password);
|
---|
| 846 | outpdu.writeTo(sshOut);
|
---|
| 847 |
|
---|
| 848 | inpdu = new SSHPduInputStream(MSG_ANY, rcvCipher);
|
---|
| 849 | inpdu.readFrom(sshIn);
|
---|
| 850 | if(inpdu.type != CMSG_ACM_NEW_PIN_ACCEPTED) {
|
---|
| 851 | throw new AuthFailException("PIN rejected by server");
|
---|
| 852 | }
|
---|
| 853 | throw new AuthFailException("New PIN accepted, " +
|
---|
| 854 | "Wait for the code on your token to change");
|
---|
| 855 |
|
---|
| 856 | default:
|
---|
| 857 | throw new AuthFailException("Invalid response from server");
|
---|
| 858 | }
|
---|
| 859 |
|
---|
| 860 | break;
|
---|
| 861 |
|
---|
| 862 | case CMSG_ACM_ACCESS_DENIED:
|
---|
| 863 | // Fall through
|
---|
| 864 | default:
|
---|
| 865 | throw new AuthFailException("Permission denied");
|
---|
| 866 | }
|
---|
| 867 | }
|
---|
| 868 |
|
---|
| 869 | void rsaChallengeResponse(RSAPrivateKey privKey, BigInteger challenge) throws IOException {
|
---|
| 870 | RSACipher rsa = new RSACipher(new KeyPair(null, privKey));
|
---|
| 871 | MessageDigest md5;
|
---|
| 872 |
|
---|
| 873 | challenge = rsa.doPrivate(challenge);
|
---|
| 874 | challenge = rsa.stripPad(challenge);
|
---|
| 875 | byte[] response = challenge.toByteArray();
|
---|
| 876 |
|
---|
| 877 | try {
|
---|
| 878 | md5 = MessageDigest.getInstance("MD5");
|
---|
| 879 | if(response[0] == 0)
|
---|
| 880 | md5.update(response, 1, 32);
|
---|
| 881 | else
|
---|
| 882 | md5.update(response, 0, 32);
|
---|
| 883 | md5.update(sessionId);
|
---|
| 884 | response = md5.digest();
|
---|
| 885 | } catch(Exception e) {
|
---|
| 886 | throw new IOException("MD5 not implemented, can't generate session-id");
|
---|
| 887 | }
|
---|
| 888 |
|
---|
| 889 | SSHPduOutputStream outpdu = new SSHPduOutputStream(CMSG_AUTH_RSA_RESPONSE, sndCipher);
|
---|
| 890 | outpdu.write(response, 0, response.length);
|
---|
| 891 | outpdu.writeTo(sshOut);
|
---|
| 892 |
|
---|
| 893 | if(!isSuccess())
|
---|
| 894 | throw new AuthFailException("Permission denied");
|
---|
| 895 | }
|
---|
| 896 |
|
---|
| 897 | void initiateSession() throws IOException {
|
---|
| 898 | // !!! java.util.zip.Deflater/Inflater can't be used since we can't give
|
---|
| 899 | // the native inflate/deflate methods the Z_PARTIAL_FLUSH flag
|
---|
| 900 | // requestCompression(3);
|
---|
| 901 |
|
---|
| 902 | if(user.wantPTY())
|
---|
| 903 | requestPTY();
|
---|
| 904 |
|
---|
| 905 | int maxPktSz = user.getMaxPacketSz();
|
---|
| 906 | if(maxPktSz > 0)
|
---|
| 907 | requestMaxPacketSz(maxPktSz);
|
---|
| 908 |
|
---|
| 909 | if(user.wantX11Forward())
|
---|
| 910 | requestX11Forward();
|
---|
| 911 |
|
---|
| 912 | if(activateTunnels)
|
---|
| 913 | initiateTunnels();
|
---|
| 914 |
|
---|
| 915 | if(commandLine != null)
|
---|
| 916 | requestCommand(commandLine);
|
---|
| 917 | else
|
---|
| 918 | requestShell();
|
---|
| 919 |
|
---|
| 920 | // !!!
|
---|
| 921 | // At this stage we can't send more options/forward-requests
|
---|
| 922 | // the server has now entered it's service-loop.
|
---|
| 923 | }
|
---|
| 924 |
|
---|
| 925 | void initiatePlugins() {
|
---|
| 926 | SSHProtocolPlugin.initiateAll(this);
|
---|
| 927 | }
|
---|
| 928 |
|
---|
| 929 | void initiateTunnels() throws IOException {
|
---|
| 930 | int i;
|
---|
| 931 | for(i = 0; i < localForwards.size(); i++) {
|
---|
| 932 | LocalForward fwd = (LocalForward) localForwards.elementAt(i);
|
---|
| 933 | requestLocalPortForward(fwd.localHost, fwd.localPort, fwd.remoteHost, fwd.remotePort, fwd.plugin);
|
---|
| 934 | }
|
---|
| 935 | for(i = 0; i < remoteForwards.size(); i++) {
|
---|
| 936 | RemoteForward fwd = (RemoteForward) remoteForwards.elementAt(i);
|
---|
| 937 | requestRemotePortForward(fwd.remotePort, fwd.localHost, fwd.localPort, fwd.plugin);
|
---|
| 938 | }
|
---|
| 939 | }
|
---|
| 940 |
|
---|
| 941 | void requestCompression(int level) throws IOException {
|
---|
| 942 | SSHPduOutputStream outpdu = new SSHPduOutputStream(CMSG_REQUEST_COMPRESSION, sndCipher);
|
---|
| 943 | outpdu.writeInt(level);
|
---|
| 944 | outpdu.writeTo(sshOut);
|
---|
| 945 | if(!isSuccess() && interactor != null)
|
---|
| 946 | interactor.report("Error requesting compression level: " + level);
|
---|
| 947 | }
|
---|
| 948 |
|
---|
| 949 | void requestMaxPacketSz(int sz) throws IOException {
|
---|
| 950 | SSHPduOutputStream outpdu = new SSHPduOutputStream(CMSG_MAX_PACKET_SIZE, sndCipher);
|
---|
| 951 | outpdu.writeInt(sz);
|
---|
| 952 | outpdu.writeTo(sshOut);
|
---|
| 953 | if(!isSuccess() && interactor != null)
|
---|
| 954 | interactor.report("Error requesting max packet size: " + sz);
|
---|
| 955 | }
|
---|
| 956 |
|
---|
| 957 | void requestX11Forward() throws IOException {
|
---|
| 958 | SSHPduOutputStream outpdu = new SSHPduOutputStream(CMSG_X11_REQUEST_FORWARDING, sndCipher);
|
---|
| 959 |
|
---|
| 960 | // !!!
|
---|
| 961 | outpdu.writeString("MIT-MAGIC-COOKIE-1");
|
---|
| 962 | outpdu.writeString("112233445566778899aabbccddeeff00");
|
---|
| 963 | outpdu.writeInt(0);
|
---|
| 964 | // !!!
|
---|
| 965 |
|
---|
| 966 | outpdu.writeTo(sshOut);
|
---|
| 967 |
|
---|
| 968 | if(!isSuccess() && interactor != null)
|
---|
| 969 | interactor.report("Error requesting X11 forward");
|
---|
| 970 | }
|
---|
| 971 |
|
---|
| 972 | void requestPTY() throws IOException {
|
---|
| 973 | SSHPduOutputStream outpdu = new SSHPduOutputStream(CMSG_REQUEST_PTY, sndCipher);
|
---|
| 974 | Terminal myTerminal = null;
|
---|
| 975 | if(console != null)
|
---|
| 976 | myTerminal = console.getTerminal();
|
---|
| 977 | if(myTerminal != null) {
|
---|
| 978 | outpdu.writeString(myTerminal.terminalType());
|
---|
| 979 | outpdu.writeInt(myTerminal.rows());
|
---|
| 980 | outpdu.writeInt(myTerminal.cols());
|
---|
| 981 | outpdu.writeInt(myTerminal.vpixels());
|
---|
| 982 | outpdu.writeInt(myTerminal.hpixels());
|
---|
| 983 | } else {
|
---|
| 984 | outpdu.writeString("");
|
---|
| 985 | outpdu.writeInt(0);
|
---|
| 986 | outpdu.writeInt(0);
|
---|
| 987 | outpdu.writeInt(0);
|
---|
| 988 | outpdu.writeInt(0);
|
---|
| 989 | }
|
---|
| 990 | outpdu.writeByte((byte)TTY_OP_END);
|
---|
| 991 | outpdu.writeTo(sshOut);
|
---|
| 992 |
|
---|
| 993 | if(!isSuccess() && interactor != null)
|
---|
| 994 | interactor.report("Error requesting PTY");
|
---|
| 995 | }
|
---|
| 996 |
|
---|
| 997 | void requestLocalPortForward(String localHost, int localPort, String remoteHost, int remotePort, String plugin)
|
---|
| 998 | throws IOException {
|
---|
| 999 | controller.newListenChannel(localHost, localPort, remoteHost, remotePort, plugin);
|
---|
| 1000 | }
|
---|
| 1001 |
|
---|
| 1002 | void requestRemotePortForward(int remotePort, String localHost, int localPort, String plugin)
|
---|
| 1003 | throws IOException {
|
---|
| 1004 |
|
---|
| 1005 | try {
|
---|
| 1006 | SSHProtocolPlugin.getPlugin(plugin).remoteListener(remotePort, localHost, localPort,
|
---|
| 1007 | controller);
|
---|
| 1008 | } catch (NoClassDefFoundError e) {
|
---|
| 1009 | throw new IOException("Plugins not available");
|
---|
| 1010 | }
|
---|
| 1011 |
|
---|
| 1012 | SSHPduOutputStream outpdu = new SSHPduOutputStream(CMSG_PORT_FORWARD_REQUEST, sndCipher);
|
---|
| 1013 | outpdu.writeInt(remotePort);
|
---|
| 1014 | outpdu.writeString(localHost);
|
---|
| 1015 | outpdu.writeInt(localPort);
|
---|
| 1016 | outpdu.writeTo(sshOut);
|
---|
| 1017 |
|
---|
| 1018 | if(!isSuccess() && interactor != null) {
|
---|
| 1019 | interactor.report("Error requesting remote port forward: " + plugin +
|
---|
| 1020 | "/" + remotePort + ":" + localHost + ":" + localPort);
|
---|
| 1021 |
|
---|
| 1022 | }
|
---|
| 1023 | }
|
---|
| 1024 |
|
---|
| 1025 | void requestCommand(String command) throws IOException {
|
---|
| 1026 | SSHPduOutputStream outpdu = new SSHPduOutputStream(CMSG_EXEC_CMD, sndCipher);
|
---|
| 1027 | outpdu.writeString(command);
|
---|
| 1028 | outpdu.writeTo(sshOut);
|
---|
| 1029 | }
|
---|
| 1030 |
|
---|
| 1031 | void requestShell() throws IOException {
|
---|
| 1032 | SSHPduOutputStream outpdu = new SSHPduOutputStream(CMSG_EXEC_SHELL, sndCipher);
|
---|
| 1033 | outpdu.writeTo(sshOut);
|
---|
| 1034 | }
|
---|
| 1035 |
|
---|
| 1036 | boolean isSuccess() throws IOException {
|
---|
| 1037 | boolean success = false;
|
---|
| 1038 | SSHPduInputStream inpdu = null;
|
---|
| 1039 | inpdu = new SSHPduInputStream(MSG_ANY, rcvCipher);
|
---|
| 1040 | inpdu.readFrom(sshIn);
|
---|
| 1041 | if(inpdu.type == SMSG_SUCCESS)
|
---|
| 1042 | success = true;
|
---|
| 1043 | else if(inpdu.type == SMSG_FAILURE)
|
---|
| 1044 | success = false;
|
---|
| 1045 | else if(inpdu.type == MSG_DISCONNECT)
|
---|
| 1046 | throw new IOException("Server disconnected: " + inpdu.readString());
|
---|
| 1047 | else
|
---|
| 1048 | throw new IOException("Protocol error: got " + inpdu.type +
|
---|
| 1049 | " when expecting success/failure");
|
---|
| 1050 | return success;
|
---|
| 1051 | }
|
---|
| 1052 |
|
---|
| 1053 | void setInteractive() {
|
---|
| 1054 | try {
|
---|
| 1055 | sshSocket.setTcpNoDelay(true);
|
---|
| 1056 | } catch (SocketException e) {
|
---|
| 1057 | if(interactor != null)
|
---|
| 1058 | interactor.report("Error setting interactive mode: " + e.getMessage());
|
---|
| 1059 | }
|
---|
| 1060 | }
|
---|
| 1061 |
|
---|
| 1062 | void setAliveInterval(int i) {
|
---|
| 1063 | if(i == 0) {
|
---|
| 1064 | if(keepAliveThread != null && keepAliveThread.isAlive())
|
---|
| 1065 | keepAliveThread.stop();
|
---|
| 1066 | keepAliveThread = null;
|
---|
| 1067 | } else {
|
---|
| 1068 | if(keepAliveThread != null) {
|
---|
| 1069 | keepAliveThread.setInterval(i);
|
---|
| 1070 | } else {
|
---|
| 1071 | keepAliveThread = new KeepAliveThread(i);
|
---|
| 1072 | keepAliveThread.start();
|
---|
| 1073 | }
|
---|
| 1074 | }
|
---|
| 1075 | }
|
---|
| 1076 |
|
---|
| 1077 | public boolean isOpened() {
|
---|
| 1078 | return isOpened;
|
---|
| 1079 | }
|
---|
| 1080 |
|
---|
| 1081 | public boolean isConnected() {
|
---|
| 1082 | return isConnected;
|
---|
| 1083 | }
|
---|
| 1084 |
|
---|
| 1085 | void stdinWriteChar(char c) throws IOException {
|
---|
| 1086 | stdinWriteString(String.valueOf(c));
|
---|
| 1087 | }
|
---|
| 1088 |
|
---|
| 1089 | void stdinWriteString(String str) throws IOException {
|
---|
| 1090 | stdinWriteString(str.getBytes(), 0, str.length());
|
---|
| 1091 | }
|
---|
| 1092 |
|
---|
| 1093 | void stdinWriteString(byte[] str) throws IOException {
|
---|
| 1094 | stdinWriteString(str, 0, str.length);
|
---|
| 1095 | }
|
---|
| 1096 |
|
---|
| 1097 | void stdinWriteString(byte[] str, int off, int len) throws IOException {
|
---|
| 1098 | SSHPduOutputStream stdinPdu;
|
---|
| 1099 | if(isOpened && controller != null) {
|
---|
| 1100 | stdinPdu = new SSHPduOutputStream(SSH.CMSG_STDIN_DATA, sndCipher);
|
---|
| 1101 | stdinPdu.writeInt(len);
|
---|
| 1102 | stdinPdu.write(str, off, len);
|
---|
| 1103 | controller.transmit(stdinPdu);
|
---|
| 1104 | }
|
---|
| 1105 | }
|
---|
| 1106 |
|
---|
| 1107 | void signalWindowChanged(int rows, int cols, int vpixels, int hpixels) {
|
---|
| 1108 | if(isOpened && controller != null) {
|
---|
| 1109 | try {
|
---|
| 1110 | SSHPduOutputStream pdu;
|
---|
| 1111 | pdu = new SSHPduOutputStream(SSH.CMSG_WINDOW_SIZE, sndCipher);
|
---|
| 1112 | pdu.writeInt(rows);
|
---|
| 1113 | pdu.writeInt(cols);
|
---|
| 1114 | pdu.writeInt(vpixels);
|
---|
| 1115 | pdu.writeInt(hpixels);
|
---|
| 1116 | controller.transmit(pdu);
|
---|
| 1117 | } catch (Exception ex) {
|
---|
| 1118 | if(interactor != null)
|
---|
| 1119 | interactor.alert("Error when sending sigWinch: " + ex.toString());
|
---|
| 1120 | }
|
---|
| 1121 | }
|
---|
| 1122 | }
|
---|
| 1123 |
|
---|
| 1124 | }
|
---|