Examples of ch.ethz.ssh2.Connection

com.trilead.ssh2.Connection
A Connection is used to establish an encrypted TCP/IP connection to a SSH-2 server.
Typically, one
1. creates a {@link #Connection(String) Connection} object.
2. calls the {@link #connect() connect()} method.
3. calls some of the authentication methods (e.g., {@link #authenticateWithPublicKey(String,File,String) authenticateWithPublicKey()}).
4. calls one or several times the {@link #openSession() openSession()} method.
5. finally, one must close the connection and release resources with the {@link #close() close()} method.
@author Christian Plattner, plattner@inf.ethz.ch @version $Id: Connection.java,v 1.28 2006/09/12 15:35:26 cplattne Exp $

        if (privateKey == null && password == null) {
            SVNErrorMessage error = SVNErrorMessage.create(SVNErrorCode.RA_NOT_AUTHORIZED, "Either password or private key should be provided to establish SSH connection");
            SVNErrorManager.error(error, SVNLogType.NETWORK);
        }
        
        Connection connection = new Connection(location.getHost(), port);
        try {
            connection.connect(null, connectTimeout, connectTimeout);
            boolean authenticated = false;
            if (privateKey != null) {
                authenticated = connection.authenticateWithPublicKey(userName, privateKey, passphrase);
            } else if (password != null) {
                String[] methods = connection.getRemainingAuthMethods(userName);
                authenticated = false;
                for (int i = 0; i < methods.length; i++) {
                    if ("password".equals(methods[i])) {
                        authenticated = connection.authenticateWithPassword(userName, password);                    
                    } else if ("keyboard-interactive".equals(methods[i])) {
                        final String p = password;
                        authenticated = connection.authenticateWithKeyboardInteractive(userName, new InteractiveCallback() {
                            public String[] replyToChallenge(String name, String instruction, int numPrompts, String[] prompt, boolean[] echo) throws Exception {
                                String[] reply = new String[numPrompts];
                                for (int i = 0; i < reply.length; i++) {
                                    reply[i] = p;
                                }
                                return reply;
                            }
                        });
                    }
                    if (authenticated) {
                        break;
                    }
                }
            } else {
                SVNErrorMessage error = SVNErrorMessage.create(SVNErrorCode.RA_NOT_AUTHORIZED, "Either password or private key should be provided to establish SSH connection");
                SVNErrorManager.error(error, SVNLogType.NETWORK);
            }
            if (!authenticated) {
                SVNErrorMessage error = SVNErrorMessage.create(SVNErrorCode.RA_NOT_AUTHORIZED, "SSH server rejects provided credentials");
                SVNErrorManager.error(error, SVNLogType.NETWORK);
            }
            return connection;
        } catch (IOException e) {
            if (connection != null) {
                connection.close();
            }
            SVNErrorMessage err = SVNErrorMessage.create(SVNErrorCode.RA_SVN_CONNECTION_CLOSED, "Cannot connect to ''{0}'': {1}", new Object[] {location.setPath("", false), e.getLocalizedMessage()});
            SVNErrorManager.error(err, e, SVNLogType.NETWORK);
        }
        return null;

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            int port = location.hasPort() ? location.getPort() : credentials.getPortNumber();
            if (port < 0) {
                port = 22;
            }
            if (!isUsePersistentConnection()) {
                Connection connection = openConnection(location, credentials, port);
                return new SSHConnectionInfo(null, "unpersistent", connection, false);
            }
            String key = credentials.getUserName() + ":" + location.getHost() + ":" + port;
            String id = credentials.getUserName() + ":" + location.getHost() + ":" + port;
            if (credentials.getPrivateKeyFile() != null) {
                key += ":" + credentials.getPrivateKeyFile().getAbsolutePath();
            }
            if (credentials.getPassphrase() != null) {
                key += ":" + credentials.getPassphrase();
            }
            if (credentials.getPassword() != null) {
                key += ":" + credentials.getPassword();
            }
            SSHConnectionInfo connectionInfo = null;
            LinkedList connectionsList = (LinkedList) ourConnectionsPool.get(key);
            if (connectionsList == null) {
                connectionsList = new LinkedList();
                ourConnectionsPool.put(key, connectionsList);
            }
            SVNDebugLog.getDefaultLog().info(ourRequestor + ": EXISTING CONNECTIONS COUNT: " + connectionsList.size());
            for (Iterator infos = connectionsList.iterator(); infos.hasNext();) {
                SSHConnectionInfo info = (SSHConnectionInfo) infos.next();
                // ping connection here. if it is stale - close connection and remove it from the pool.
                try {
                    info.myConnection.ping();
                } catch (IOException e) {
                    // ping failed, remove _this_ info only and close its connection.
                    // the we may check next available connection.
                    
                    // all channels binded to the closed connection will be closed
                    // on the next attempt to access them.
                    SVNDebugLog.getDefaultLog().info(ourRequestor + ": ROTTEN CONNECTION DETECTED, WILL CLOSE IT: " + info);
                    infos.remove();
                    // to let it be closed even if it is the last one.
                    info.setPersistent(false);
                    SVNDebugLog.getDefaultLog().info(ourRequestor + ": ROTTEN CONNECTION MADE NOT PERSISTENT: " + info);
                    closeConnection(info);
                    continue;
                }
                if (info.getSessionCount() < MAX_SESSIONS_PER_CONNECTION) {
                    info.resetTimeout();
                    SVNDebugLog.getDefaultLog().info(ourRequestor + ": REUSING ONE WITH " + info.getSessionCount() + " SESSIONS: " + info.myConnection);
                    return info;
                }
            }
            SVNDebugLog.getDefaultLog().info(ourRequestor + ": OPENING NEW CONNECTION");
            Connection connection = openConnection(location, credentials, port);
            connectionInfo = new SSHConnectionInfo(key, id, connection, true);
            connectionsList.add(connectionInfo);
            SVNDebugLog.getDefaultLog().info(ourRequestor + ": NEW CONNECTION OPENED, TOTAL: " + connectionsList.size());
            return connectionInfo;
        } finally {

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        if (privateKey == null && password == null) {
            SVNErrorMessage error = SVNErrorMessage.create(SVNErrorCode.RA_NOT_AUTHORIZED, "Either password or private key should be provided to establish SSH connection");
            SVNErrorManager.error(error);
        }
        
        Connection connection = new Connection(location.getHost(), port);
        try {
            connection.connect();
            boolean authenticated = false;
            if (privateKey != null) {
                authenticated = connection.authenticateWithPublicKey(userName, privateKey, passphrase);
            } else if (password != null) {
                String[] methods = connection.getRemainingAuthMethods(userName);
                authenticated = false;
                for (int i = 0; i < methods.length; i++) {
                    if ("password".equals(methods[i])) {
                        authenticated = connection.authenticateWithPassword(userName, password);                    
                    } else if ("keyboard-interactive".equals(methods[i])) {
                        final String p = password;
                        authenticated = connection.authenticateWithKeyboardInteractive(userName, new InteractiveCallback() {
                            public String[] replyToChallenge(String name, String instruction, int numPrompts, String[] prompt, boolean[] echo) throws Exception {
                                String[] reply = new String[numPrompts];
                                for (int i = 0; i < reply.length; i++) {
                                    reply[i] = p;
                                }
                                return reply;
                            }
                        });
                    }
                    if (authenticated) {
                        break;
                    }
                }
            } else {
                SVNErrorMessage error = SVNErrorMessage.create(SVNErrorCode.RA_NOT_AUTHORIZED, "Either password or private key should be provided to establish SSH connection");
                SVNErrorManager.error(error);
            }
            if (!authenticated) {
                SVNErrorMessage error = SVNErrorMessage.create(SVNErrorCode.RA_NOT_AUTHORIZED, "SSH server rejects provided credentials");
                SVNErrorManager.error(error);
            }
            return connection;
        } catch (IOException e) {
            if (connection != null) {
                connection.close();
            }
            SVNErrorMessage err = SVNErrorMessage.create(SVNErrorCode.RA_SVN_CONNECTION_CLOSED, "Cannot connect to ''{0}'': {1}", new Object[] {location.setPath("", false), e.getLocalizedMessage()});
            SVNErrorManager.error(err, e);
        }
        return null;

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                    Thread.sleep(120000);
                }
                for (VirtualMachine vm : this.virtualMachines) {


                    s_logger.info("Attempting to SSH into linux host " + this.publicIp + " with retry attempt: " + retry);
                    Connection conn = new Connection(this.publicIp);
                    conn.connect(null, 600000, 600000);


                    s_logger.info("SSHed successfully into linux host " + this.publicIp);


                    boolean isAuthenticated = conn.authenticateWithPassword("root", "password");


                    if (isAuthenticated == false) {
                        s_logger.info("Authentication failed");
                    }
                    //execute copy command
                    Session sess = conn.openSession();
                    String fileName;
                    Random ran = new Random();
                    fileName = Math.abs(ran.nextInt()) + "-file";
                    String copyCommand = new String("./scpScript " + vm.getPrivateIp() + " " + fileName);
                    s_logger.info("Executing " + copyCommand);
                    sess.execCommand(copyCommand);
                    Thread.sleep(120000);
                    sess.close();


                    //execute wget command
                    sess = conn.openSession();
                    String downloadCommand =
                        new String("wget http://172.16.0.220/scripts/checkDiskSpace.sh; chmod +x *sh; ./checkDiskSpace.sh; rm -rf checkDiskSpace.sh");
                    s_logger.info("Executing " + downloadCommand);
                    sess.execCommand(downloadCommand);
                    Thread.sleep(120000);
                    sess.close();


                    //close the connection
                    conn.close();
                }
            } catch (Exception ex) {
                s_logger.error(ex);
                retry++;
                if (retry == retryNum) {

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                Thread.sleep(120000);
            }


            s_logger.info("Attempting to SSH into linux host " + host + " with retry attempt: " + retry);


            Connection conn = new Connection(host);
            conn.connect(null, 60000, 60000);


            s_logger.info("User + ssHed successfully into linux host " + host);


            boolean isAuthenticated = conn.authenticateWithPassword("root", password);


            if (isAuthenticated == false) {
                s_logger.info("Authentication failed for root with password" + password);
                System.exit(2);
            }


            boolean success = false;
            String linuxCommand = null;


            if (i % 10 == 0)
                linuxCommand = "rm -rf *; wget http://192.168.1.250/dump.bin && ls -al dump.bin";
            else
                linuxCommand = "wget http://192.168.1.250/dump.bin && ls -al dump.bin";


            Session sess = conn.openSession();
            sess.execCommand(linuxCommand);


            InputStream stdout = sess.getStdout();
            InputStream stderr = sess.getStderr();


            byte[] buffer = new byte[8192];
            while (true) {
                if ((stdout.available() == 0) && (stderr.available() == 0)) {
                    int conditions = sess.waitForCondition(ChannelCondition.STDOUT_DATA | ChannelCondition.STDERR_DATA | ChannelCondition.EOF, 120000);


                    if ((conditions & ChannelCondition.TIMEOUT) != 0) {
                        s_logger.info("Timeout while waiting for data from peer.");
                        System.exit(2);
                    }


                    if ((conditions & ChannelCondition.EOF) != 0) {
                        if ((conditions & (ChannelCondition.STDOUT_DATA | ChannelCondition.STDERR_DATA)) == 0) {
                            break;
                        }
                    }
                }


                while (stdout.available() > 0) {
                    success = true;
                    int len = stdout.read(buffer);
                    if (len > 0) // this check is somewhat paranoid
                        s_logger.info(new String(buffer, 0, len));
                }


                while (stderr.available() > 0) {
                    /* int len = */stderr.read(buffer);
                }
            }


            sess.close();
            conn.close();


            if (!success) {
                retry++;
                if (retry == MAX_RETRY_LINUX) {
                    System.exit(2);

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                    Thread.sleep(300000);
                }


                s_logger.info("Attempting to SSH into windows host " + host + " with retry attempt: " + retry);


                Connection conn = new Connection(host);
                conn.connect(null, 60000, 60000);


                s_logger.info("SSHed successfully into windows host " + host);
                boolean success = false;
                boolean isAuthenticated = conn.authenticateWithPassword("vmops", "vmops");
                if (isAuthenticated == false) {
                    return "Authentication failed";
                }
                SCPClient scp = new SCPClient(conn);


                scp.put("wget.exe", "");


                Session sess = conn.openSession();
                s_logger.info("Executing : wget http://172.16.0.220/dump.bin");
                sess.execCommand("wget http://172.16.0.220/dump.bin && dir dump.bin");


                InputStream stdout = sess.getStdout();
                InputStream stderr = sess.getStderr();


                byte[] buffer = new byte[8192];
                while (true) {
                    if ((stdout.available() == 0) && (stderr.available() == 0)) {
                        int conditions = sess.waitForCondition(ChannelCondition.STDOUT_DATA | ChannelCondition.STDERR_DATA | ChannelCondition.EOF, 120000);


                        if ((conditions & ChannelCondition.TIMEOUT) != 0) {
                            s_logger.info("Timeout while waiting for data from peer.");
                            return null;
                        }


                        if ((conditions & ChannelCondition.EOF) != 0) {
                            if ((conditions & (ChannelCondition.STDOUT_DATA | ChannelCondition.STDERR_DATA)) == 0) {
                                break;
                            }
                        }
                    }


                    while (stdout.available() > 0) {
                        success = true;
                        int len = stdout.read(buffer);
                        if (len > 0) // this check is somewhat paranoid
                            s_logger.info(new String(buffer, 0, len));
                    }


                    while (stderr.available() > 0) {
                        int len = stderr.read(buffer);
                    }
                }
                sess.close();
                conn.close();


                if (success) {
                    return null;
                } else {
                    retry++;

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            System.exit(2);
        }


        try {
            s_logger.info("Attempting to SSH into host " + host);
            Connection conn = new Connection(host);
            conn.connect(null, 60000, 60000);


            s_logger.info("User + ssHed successfully into host " + host);


            boolean isAuthenticated = conn.authenticateWithPassword("root", password);


            if (isAuthenticated == false) {
                s_logger.info("Authentication failed for root with password" + password);
                System.exit(2);
            }


            String linuxCommand = "wget " + url;
            Session sess = conn.openSession();
            sess.execCommand(linuxCommand);
            sess.close();
            conn.close();


        } catch (Exception e) {
            s_logger.error("SSH test fail with error", e);
            System.exit(2);
        }

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                    Thread.sleep(120000);
                }


                s_logger.info("Attempting to SSH into linux host " + host + " with retry attempt: " + retry);


                Connection conn = new Connection(host);
                conn.connect(null, 60000, 60000);


                s_logger.info("SSHed successfully into linux host " + host);


                boolean isAuthenticated = conn.authenticateWithPassword("root", "password");


                if (isAuthenticated == false) {
                    return "Authentication failed";
                }
                boolean success = false;
                Session sess = conn.openSession();
                s_logger.info("Executing : wget http://172.16.0.220/dump.bin");
                sess.execCommand("wget http://172.16.0.220/dump.bin && ls -al dump.bin");


                InputStream stdout = sess.getStdout();
                InputStream stderr = sess.getStderr();


                byte[] buffer = new byte[8192];
                while (true) {
                    if ((stdout.available() == 0) && (stderr.available() == 0)) {
                        int conditions = sess.waitForCondition(ChannelCondition.STDOUT_DATA | ChannelCondition.STDERR_DATA | ChannelCondition.EOF, 120000);


                        if ((conditions & ChannelCondition.TIMEOUT) != 0) {
                            s_logger.info("Timeout while waiting for data from peer.");
                            return null;
                        }


                        if ((conditions & ChannelCondition.EOF) != 0) {
                            if ((conditions & (ChannelCondition.STDOUT_DATA | ChannelCondition.STDERR_DATA)) == 0) {
                                break;
                            }
                        }
                    }


                    while (stdout.available() > 0) {
                        success = true;
                        int len = stdout.read(buffer);
                        if (len > 0) // this check is somewhat paranoid
                            s_logger.info(new String(buffer, 0, len));
                    }


                    while (stderr.available() > 0) {
                        int len = stderr.read(buffer);
                    }
                }


                sess.close();
                conn.close();


                if (success) {
                    return null;
                } else {
                    retry++;

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                for (int j = 0; j < ipList.getLength(); j++) {
                    Element itemVariableElement = (Element)ipList.item(j);


                    s_logger.info("Attempting to SSH into agent " + itemVariableElement.getTextContent());
                    try {
                        Connection conn = new Connection(itemVariableElement.getTextContent());
                        conn.connect(null, 60000, 60000);


                        s_logger.info("SSHed successfully into agent " + itemVariableElement.getTextContent());


                        boolean isAuthenticated = conn.authenticateWithPassword("root", "password");


                        if (isAuthenticated == false) {
                            s_logger.info("Authentication failed for root with password");
                            return false;
                        }


                        Session sess = conn.openSession();
                        s_logger.info("Executing : " + commandElement.getTextContent());
                        sess.execCommand(commandElement.getTextContent());
                        Thread.sleep(60000);
                        sess.close();
                        conn.close();


                    } catch (Exception ex) {
                        s_logger.error(ex);
                        return false;
                    }

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            if (api.getName().equals("rebootManagementServer")) {


                s_logger.info("Attempting to SSH into management server " + this.getParam().get("hostip"));
                try {
                    Connection conn = new Connection(this.getParam().get("hostip"));
                    conn.connect(null, 60000, 60000);


                    s_logger.info("SSHed successfully into management server " + this.getParam().get("hostip"));


                    boolean isAuthenticated = conn.authenticateWithPassword("root", "password");


                    if (isAuthenticated == false) {
                        s_logger.info("Authentication failed for root with password");
                        return false;
                    }


                    String restartCommand = "service cloud-management restart; service cloud-usage restart";
                    Session sess = conn.openSession();
                    s_logger.info("Executing : " + restartCommand);
                    sess.execCommand(restartCommand);
                    Thread.sleep(120000);
                    sess.close();
                    conn.close();


                } catch (Exception ex) {
                    s_logger.error(ex);
                    return false;
                }

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Basic

BasicWithHTTPProxy

ch.ethz.ssh2.auth.AuthenticationManager

ch.ethz.ssh2.auth.ServerAuthenticationManager

ch.ethz.ssh2.channel.ChannelManager

ch.ethz.ssh2.channel.LocalAcceptThread

ch.ethz.ssh2.Connection

ch.ethz.ssh2.ConnectionInfo

ch.ethz.ssh2.crypto.cipher.BlockCipher

ch.ethz.ssh2.crypto.dh.DhExchange

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