Node-SSH - SSH2 with Promises

Node-SSH is an extremely lightweight Promise wrapper for ssh2, Period.

Example

var path, node_ssh, ssh, fs

fs = require('fs')
path = require('path')
node_ssh = require('node-ssh')
ssh = new node_ssh()

ssh.connect({
  host: 'localhost',
  username: 'steel',
  privateKey: '/home/steel/.ssh/id_rsa'
})
/*
 Or
 ssh.connect({
   host: 'localhost',
   username: 'steel',
   privateKey: fs.readFileSync('/home/steel/.ssh/id_rsa')
 })
 if you want to use the raw string as private key
 */
.then(function() {
  // Local, Remote
  ssh.putFile('/home/steel/Lab/localPath', '/home/steel/Lab/remotePath').then(function() {
    console.log("The File thing is done")
  }, function(error) {
    console.log("Something's wrong")
    console.log(error)
  })
  // Array<Shape('local' => string, 'remote' => string)>
  ssh.putFiles([{ local: '/home/steel/Lab/localPath', remote: '/home/steel/Lab/remotePath' }]).then(function() {
    console.log("The File thing is done")
  }, function(error) {
    console.log("Something's wrong")
    console.log(error)
  })
  // Local, Remote
  ssh.getFile('/home/steel/Lab/localPath', '/home/steel/Lab/remotePath').then(function(Contents) {
    console.log("The File's contents were successfully downloaded")
  }, function(error) {
    console.log("Something's wrong")
    console.log(error)
  })
  // Putting entire directories
  const failed = []
  const successful = []
  ssh.putDirectory('/home/steel/Lab', '/home/steel/Lab', {
    recursive: true,
    concurrency: 10,
    validate: function(itemPath) {
      const baseName = path.basename(itemPath)
      return baseName.substr(0, 1) !== '.' && // do not allow dot files
             baseName !== 'node_modules' // do not allow node_modules
    },
    tick: function(localPath, remotePath, error) {
      if (error) {
        failed.push(localPath)
      } else {
        successful.push(localPath)
      }
    }
  }).then(function(status) {
    console.log('the directory transfer was', status ? 'successful' : 'unsuccessful')
    console.log('failed transfers', failed.join(', '))
    console.log('successful transfers', successful.join(', '))
  })
  // Command
  ssh.execCommand('hh_client --json', { cwd:'/var/www' }).then(function(result) {
    console.log('STDOUT: ' + result.stdout)
    console.log('STDERR: ' + result.stderr)
  })
  // Command with escaped params
  ssh.exec('hh_client', ['--json'], { cwd: '/var/www', stream: 'stdout', options: { pty: true } }).then(function(result) {
    console.log('STDOUT: ' + result)
  })
  // With streaming stdout/stderr callbacks
  ssh.exec('hh_client', ['--json'], {
    cwd: '/var/www',
    onStdout(chunk) {
      console.log('stdoutChunk', chunk.toString('utf8'))
    },
    onStderr(chunk) {
      console.log('stderrChunk', chunk.toString('utf8'))
    },
  })
})

API

type PutFilesOptions = {
  sftp: ?Object,
  sftpOptions?: Object,
  concurrency?: number = 5,
}
type PutDirectoryOptions = {
  sftp: ?Object,
  sftpOptions?: Object,
  concurrency?: number = 5,
  recursive?: boolean,
  tick?: ((localPath: string, remotePath: string, error: ?Error) => void),
  validate?: ((localPath: string) => boolean),
}
type ExecOptions = {
  cwd?: string,
  options?: Object // passed to ssh2.exec
  stdin?: string,
  stream?: 'stdout' | 'stderr' | 'both',
  onStdout?: ((chunk: Buffer) => void),
  onStderr?: ((chunk: Buffer) => void),
}

class SSH{
  connect(config: SSH2Config): Promise<this>
  requestSFTP(): Promise<SSH2SFTP>
  requestShell(): Promise<SSH2Shell>
  mkdir(path: string, method: 'sftp' | 'exec' = 'sftp', givenSftp?: Object): Promise<string>
  exec(command: string, parameters: Array<string>, options: ExecOptions = {}): Promise<Object | string>
  execCommand(command: string, options: { cwd: string, stdin: string } = {}): Promise<{ stdout: string, options?: Object, stderr: string, signal: ?string, code: number }>
  putFile(localFile: string, remoteFile: string, sftp: ?Object = null, opts: ?Object = null): Promise<void>
  getFile(localFile: string, remoteFile: string, sftp: ?Object = null, opts: ?Object = null): Promise<void>
  putFiles(files: Array<{ local: string, remote: string }>, options: PutFilesOptions = {}): Promise<void>
  putDirectory(localDirectory: string, remoteDirectory: string, options: PutDirectoryOptions = {}): Promise<boolean>
  dispose(): void
}

Keyboard-interactive user authentication

In some cases you have to enable keyboard-interactive user authentication. Otherwise you will get an All configured authentication methods failed error.

Example:

const password = 'test'

ssh.connect({
  host: 'localhost',
  username: 'steel',
  port: 22,
  password,
  tryKeyboard: true,
  onKeyboardInteractive: (name, instructions, instructionsLang, prompts, finish) => {
      if (prompts.length > 0 && prompts[0].prompt.toLowerCase().includes('password')) {
        finish([password])
      }
    }
})

For further information see: https://github.com/mscdex/ssh2/issues/604

License

This project is licensed under the terms of MIT license. See the LICENSE file for more info.