Examples with ChannelExec com.jcraft.jsch.ChannelExec used on opensource projects

Example 76 with ChannelExec

use of com.jcraft.jsch.ChannelExec in project cdap by caskdata.

the class DefaultSSHSession method execute.

@Override
public SSHProcess execute(List<String> commands) throws IOException {
    try {
        Channel channel = session.openChannel("exec");
        try {
            ChannelExec channelExec = (ChannelExec) channel;
            // Should get the stream before connecting.
            // Otherwise JSch will write the output to some default stream, causing data missing from
            // the InputStream that acquired later.
            SSHProcess process = new DefaultSSHProcess(channelExec, channelExec.getOutputStream(), channelExec.getInputStream(), channelExec.getErrStream());
            channelExec.setCommand(String.join(";", commands));
            channelExec.connect();
            return process;
        } catch (Exception e) {
            channel.disconnect();
            throw e;
        }
    } catch (JSchException e) {
        throw new IOException(e);
    }
}

Example 77 with ChannelExec

use of com.jcraft.jsch.ChannelExec in project CommandHelper by EngineHub.

the class SSHWrapper method getRemoteMD5.

private static String getRemoteMD5(String remoteFile, Session session) throws JSchException, IOException {
    ChannelExec channel = null;
    final StringBuilder sb = new StringBuilder();
    try {
        channel = (ChannelExec) session.openChannel("exec");
        channel.setCommand("openssl md5 " + remoteFile);
        channel.setInputStream(null);
        channel.setOutputStream(null);
        channel.setErrStream(System.err);
        InputStream in = channel.getInputStream();
        channel.connect();
        byte[] tmp = new byte[1024];
        while (true) {
            while (in.available() > 0) {
                int i = in.read(tmp, 0, 1024);
                if (i < 0) {
                    break;
                }
                sb.append(new String(tmp, 0, i));
            }
            if (channel.isClosed()) {
                if (in.available() > 0) {
                    continue;
                }
                if (channel.getExitStatus() != 0) {
                    // Something went wrong, fail the comparison
                    return "invalidMD5sum";
                }
                break;
            }
            try {
                Thread.sleep(1);
            } catch (Exception ee) {
            }
        }
    } finally {
        if (channel != null) {
            channel.disconnect();
        }
    }
    if ("".equals(sb.toString())) {
        // or if the file simply doesn't exist.
        return "invalidMD5sum";
    }
    String opensslReturn = sb.toString();
    // This will be something like MD5(/path/to/file)= 798ffb41da648e405ca160fb547e3a09
    // and we just need 798ffb41da648e405ca160fb547e3a09
    opensslReturn = opensslReturn.replaceAll("MD5\\(.*\\)= ", "");
    return opensslReturn.replaceAll("\n|\r", "");
}

Example 78 with ChannelExec

use of com.jcraft.jsch.ChannelExec in project CommandHelper by EngineHub.

the class SSHWrapper method SCPFrom.

private static void SCPFrom(String remote, File local, Session session) throws IOException, JSchException {
    // exec 'scp -f rfile' remotely
    String command = "scp -f " + remote;
    Channel channel = session.openChannel("exec");
    ((ChannelExec) channel).setCommand(command);
    // get I/O streams for remote scp
    OutputStream out = channel.getOutputStream();
    InputStream in = channel.getInputStream();
    channel.connect();
    byte[] buf = new byte[1024];
    // send '\0'
    buf[0] = 0;
    out.write(buf, 0, 1);
    out.flush();
    while (true) {
        int c = checkAckFrom(in);
        if (c != 'C') {
            break;
        }
        // read '0644 '
        in.read(buf, 0, 5);
        long filesize = 0L;
        while (true) {
            if (in.read(buf, 0, 1) < 0) {
                // error
                break;
            }
            if (buf[0] == ' ') {
                break;
            }
            filesize = filesize * 10L + (long) (buf[0] - '0');
        }
        String file = null;
        for (int i = 0; ; i++) {
            in.read(buf, i, 1);
            if (buf[i] == (byte) 0x0a) {
                file = new String(buf, 0, i);
                break;
            }
        }
        // send '\0'
        buf[0] = 0;
        out.write(buf, 0, 1);
        out.flush();
        String prefix = null;
        if (local.isDirectory()) {
            prefix = local.getPath() + File.separator;
        }
        // read a content of lfile
        FileOutputStream fos = new FileOutputStream(prefix == null ? local.getPath() : prefix + file);
        int foo;
        while (true) {
            if (buf.length < filesize) {
                foo = buf.length;
            } else {
                foo = (int) filesize;
            }
            foo = in.read(buf, 0, foo);
            if (foo < 0) {
                // error
                break;
            }
            fos.write(buf, 0, foo);
            filesize -= foo;
            if (filesize == 0L) {
                break;
            }
        }
        fos.close();
        fos = null;
        checkAckFrom(in);
        // send '\0'
        buf[0] = 0;
        out.write(buf, 0, 1);
        out.flush();
    }
    channel.disconnect();
}

Example 79 with ChannelExec

use of com.jcraft.jsch.ChannelExec in project compss by bsc-wdc.

the class AbstractSSHConnector method tryToExecuteCommand.

private boolean tryToExecuteCommand(String workerIP, String user, boolean setPassword, String passwordOrKeyPair, String command) throws ConnectorException {
    Session session = null;
    ChannelExec exec = null;
    InputStream inputStream = null;
    try {
        // Create session
        session = getSession(workerIP, user, setPassword, passwordOrKeyPair);
        // Configure session
        exec = (ChannelExec) session.openChannel("exec");
        exec.setCommand(command);
        // Waits the command to be executed
        inputStream = exec.getErrStream();
        InputStream stdOut = exec.getInputStream();
        // Execute command
        exec.connect(SERVER_TIMEOUT);
        if (LOGGER.isDebugEnabled()) {
            String output = readInputStream(stdOut);
            LOGGER.debug("Command output: " + output);
        }
        int exitStatus = -1;
        while (exitStatus < 0) {
            exitStatus = exec.getExitStatus();
            if (exitStatus == 0) {
                if (LOGGER.isDebugEnabled()) {
                    LOGGER.debug("Command successfully executed: " + command);
                }
                return true;
            } else if (exitStatus > 0) {
                String output = readInputStream(inputStream);
                if (LOGGER.isDebugEnabled()) {
                    LOGGER.debug(ERROR_COMMAND_EXEC + command + " in " + workerIP + ".\nReturned std error: " + output);
                }
                throw new ConnectorException(ERROR_COMMAND_EXEC + command + " in " + workerIP + " (exit status:" + exitStatus + ")");
            }
            LOGGER.debug("Command still on execution");
            try {
                Thread.sleep(RETRY_TIME * S_TO_MS);
            } catch (InterruptedException e) {
                LOGGER.debug("Sleep interrupted");
                Thread.currentThread().interrupt();
            }
        }
    } catch (ConnectorException | IOException | JSchException e) {
        throw new ConnectorException(ERROR_EXCEPTION_EXEC_COMMAND + user + "@" + workerIP, e);
    } finally {
        if (inputStream != null) {
            try {
                inputStream.close();
            } catch (IOException e) {
                LOGGER.warn(WARN_INPUTSTREAM_CLOSE);
            }
        }
        if (exec != null && exec.isConnected()) {
            LOGGER.debug("Disconnecting exec channel");
            exec.disconnect();
        }
        if (session != null && session.isConnected()) {
            LOGGER.debug("Disconnecting session");
            session.disconnect();
        }
    }
    return false;
}

Example 80 with ChannelExec

use of com.jcraft.jsch.ChannelExec in project ASAP by salmant.

the class TTS1 method How_many_existing_servers.

// ///////////////////////////////////////////
public static int How_many_existing_servers() {
    int i = 0;
    String haproy_ip = "194.249.1.110";
    String haproy_host_user = "root";
    String haproy_host_password = "****************";
    try {
        String command = "cat /etc/haproxy/haproxy.cfg";
        JSch jsch = new JSch();
        com.jcraft.jsch.Session session = jsch.getSession(haproy_host_user, haproy_ip, 22);
        Properties config = new Properties();
        config.put("StrictHostKeyChecking", "no");
        session.setConfig(config);
        ;
        session.setPassword(haproy_host_password);
        session.connect();
        Channel channel = session.openChannel("exec");
        ((ChannelExec) channel).setCommand(command);
        channel.setInputStream(null);
        ((ChannelExec) channel).setErrStream(System.err);
        InputStream input = channel.getInputStream();
        channel.connect();
        try {
            InputStreamReader inputReader = new InputStreamReader(input);
            BufferedReader bufferedReader = new BufferedReader(inputReader);
            String line = null;
            while ((line = bufferedReader.readLine()) != null) {
                if (line.contains("-www"))
                    i++;
            // System.out.println(line);
            }
            bufferedReader.close();
            inputReader.close();
        } catch (IOException ex) {
            ex.printStackTrace();
            return i;
        }
        channel.disconnect();
        session.disconnect();
        return i;
    } catch (Exception ex) {
        ex.printStackTrace();
        return i;
    }
}