Oro Sftp

OSftp Class is a wrapper of ssh2-sftp-client to simplify their use.

ssh2-sftp-client is a SFTP client module for node.js that provides an asynchronous interface for communicating with a SFTP server.

To have the same interface using FTP, you can utilize the OroFtp class available through OroFtp

npm install oro-sftp

Example:

// cjs
const { OSftp } = require( 'oro-sftp' );

// mjs, ts
import OSFtp from 'oro-sftp';

const sftpClient = new OSftp( {
  host: 'custom-server.com', 
  port: 22, 
  user: 'custom-user', 
  password: 'custom-password' 
} );

const sftpUpload = await sftpClient.uploadOne( `./folder-from/filename`, 'folder-to/filename' );

console.log( sftpUpload );
// -> { status: true, ... }

Methods

• Error Code List
• new OSFtp()
• .getClient()
• await .connect()
• await .disconnect()
• await .upload()
• await .uploadOne()
• await .download()
• await .list()
• await .move()
• await .delete()
• await .exists()
• await .mkdir()
• await .rmdir()
• Testing

Error Code List

When an error happens, instead to throw an error, it's returned a managed responseKO.

responseKO is an object with 3 fields:

interface responseKO {
  status: false;
  error: {
    msg: string;         // explaining the error
    code: OSFtpErrorCode; // string
    // ...               // other data, it depends on method error
  },
  tryAgain: boolean;
}

type OSFtpErrorCode =
  | 'ECONNREFUSED'
  | 'UNCONNECTED'
  | 'ENOTFOUND'
  | 'ENTIMEOUT'
  | 'ENOENT'
  | 'EEXIST'
  | 'ENOTEMPTY';

new OSftp()

new OSFtp( config?: OSFtpConfig );

type OSFtpConfig = SftpClient.ConnectOptions &  {
  host?: string;
  port?: number;
  user?: string;
  password?: string;
  readyTimeout?: number;          // def: 3000
  disconnectWhenError?: boolean;  // def: true
}

As parameters, you can pass the server config data (or you can also do it in .connect()).

In addition, config has param disconnectWhenError (default true), so when an error happens, connection closes automatically.

const OSftp = require( 'oro-sftp' );
const config = {
  host: 'custom-server.com',
  port: 22,
  user: 'custom-user',
  password: 'custom-password',
  readyTimeout: 3000,
  disconnectWhenError: true
}

const sftpClient = new OSftp( config );

.getClient()

sftpClient.getClient(): SftpClient;

If you want to use the library ssh2-sftp-client, you can get the object.

const sftpClient = new OSftp( config );

const ssh2SftpClient = await sftpClient.getClient();

await .connect()

await sftpClient.connect( config?: OSFtpConfig ) => Promise<OSFtpConnectResponse>;

type OSFtpConfig = PromiseFtp.Options &  {
  host?: string;
  port?: number;
  user?: string;
  password?: string;
  readyTimeout?: number;          // def: 3000
  disconnectWhenError?: boolean;  // def: true
}

export type OSFtpConnectResponse =
  | SResponseOKBasic 
  | SResponseKOObjectAgain<OSFtpConnectError>;

interface SResponseOKBasic { 
    status: true;
}

interface SResponseKOObjectAgain { 
    status: false;
    error: {
        msg: string;
        code: OSFtpErrorCode;
        config: OSFtpConfig;
    }
}

interface OSFtpConnectError {
    msg: string;
    code: OSFtpErrorCode;
    config: OSFtpConfig;
}

When you create a connection, it's expected that you will disconnect it later.

This method return a response, which is an object with status: true | false.

const sftpClient = new OSftp( config );

const connected = await sftpClient.connect();
console.log( connected );
// -> { status: true }

await .disconnect()

await sftpClient.disconnect() => Promise<OSFtpDisconnectResponse>;

export type OSFtpDisconnectResponse =
  | SResponseOKBasic
  | SResponseKOBasic;

interface SResponseOKBasic { 
  status: true;
}

interface SResponseKOBasic { 
  status: false;
}

Note: If you don't .disconnect() when finished, the script still running.

Note2: There is a param in config disconnectWhenError by default true. This means that if a method (like upload or move) return status: false, the ftpClient will be disconnected automatically.

This method return a response, which is an object with status: true | false.

const sftpClient = new OSftp( config );

const connected = await sftpClient.connect();

// ...

const disconnected = await sftpClient.disconnect();
console.log( disconnected );
// -> { status: true }

await .upload()

await sftpClient.upload( filepathFrom: string, filepathTo?: string ) 
  => Promise<OSFtpFileResponse>;

export type OSFtpFileResponse =
  | SResponseOKObject<OSFtpFileObject>
  | SResponseKOObject<OSFtpFileError>;

interface SResponseOKObject { 
  status: true;
  filename: string;
  filepath: string;
}

interface SResponseKOObject { 
  status: false;
  error: {
    msg: string;
    filepathFrom: string;
    filepathTo?: string;
    code?: OSFtpErrorCode;
  }
}

interface OSFtpFileObject {
  filename: string;
  filepath: string;
}

interface OSFtpFileError {
  msg: string;
  filepathFrom: string;
  filepathTo?: string;
  code?: OSFtpErrorCode;
}

upload is the action to copy from local to ftp folder.

If filepathTo is not declared, it takes the filename of filepathFrom and save it on ftp main folder.

const sftpClient = new OSftp( config );

const connected = await sftpClient.connect();
if( ! connected.status ) { return connected; }

const uploaded = await sftpClient.upload( './files/custom-file.pdf' );
console.log( uploaded );
// -> { status: true, filename: 'custom-file.pdf', ... }

sftpClient.disconnect();

await .uploadOne()

await sftpClient.upload( filepathFrom: string, filepathTo?: string ) 
  => Promise<OSFtpUploadOneResponse>;

export type OSFtpUploadOneResponse =
  | SResponseOKObject<OSFtpFileObject>
  | SResponseKOObject<OSFtpFileError | OSFtpConnectError>;

interface SResponseOKObject { 
  status: true;
  filename: string;
  filepath: string;
}

type SResponseKOObject =
  | { 
      status: false;
      error: {
        msg: string;
        filepathFrom: string;
        filepathTo?: string;
        code?: OSFtpErrorCode;
      }
    }
  | {
      status: false;
      error: {
        msg: string;
        code: OSFtpErrorCode;
        config: OSFtpConfig;
      }
    }

interface OSFtpFileObject {
  filename: string;
  filepath: string;
}

interface OSFtpFileError {
  msg: string;
  filepathFrom: string;
  filepathTo?: string;
  code?: OSFtpErrorCode;
}

interface OSFtpConnectError {
  msg: string;
  code: OSFtpErrorCode;
  config: OSFtpConfig;
}

If you want to upload just one file, you can use this method and inside:

1. it's connected,
2. file is uploaded,
3. it's disconnected.

const sftpClient = new OSftp( config );

const uploaded = await sftpClient.uploadOne( './files/custom-file.pdf' );
console.log( uploaded );
// -> { status: true, filename: 'custom-file.pdf', ... }

await .download()

await sftpClient.download( filepathFrom: string, filepathTo?: string ) 
  => Promise<OSFtpFileResponse>;

export type OSFtpFileResponse =
  | SResponseOKObject<OSFtpFileObject>
  | SResponseKOObject<OSFtpFileError>;

interface SResponseOKObject { 
  status: true;
  filename: string;
  filepath: string;
}

interface SResponseKOObject { 
  status: false;
  error: {
    msg: string;
    filepathFrom: string;
    filepathTo?: string;
    code?: OSFtpErrorCode;
  }
}

interface OSFtpFileObject {
  filename: string;
  filepath: string;
}

interface OSFtpFileError {
  msg: string;
  filepathFrom: string;
  filepathTo?: string;
  code?: OSFtpErrorCode;
}

download is the action to copy from ftp folder to local.

If filepathTo is not declared, it takes the filename of filepathFrom and save it on local main folder.

const sftpClient = new OSftp( config );

const connected = await sftpClient.connect();
if( ! connected.status ) { return connected; }

const downloaded = await sftpClient.download( 'custom-file.pdf' );
console.log( downloaded );
// -> { status: true, filename: 'custom-file.pdf', ... }

sftpClient.disconnect();

await .list()

await sftpClient.list( folder?: string, filters?: OSFtpListFilters ) 
  => Promise<OSFtpListResponse>;

interface OSFtpListFilters {
  onlyFiles?: boolean | undefined;        // def: false
  onlyFolders?: boolean | undefined;      // def: false
  pattern?: ListFilterFunction | undefined;
}

type ListFilterFunction = (fileInfo: FileInfo) => boolean;

export type OSFtpListResponse =
  | SResponseOKObject<OSFtpListObject>
  | SResponseKOObject<OSFtpListError>;

interface SResponseOKObject { 
  status: true;
  count: number; // list.length
  list: OSFtpListFile[];
}

interface SResponseKOObject { 
  status: false;
  error: {
    msg: string;
    folder: string;
    filters: OSFtpListFilters;
    code?: OSFtpErrorCode;
  }
}

export interface OSFtpListFile {
  path: string;
  name: string;
  type: OSFtpListFileType;
  date: Date;
  size: number;
  owner: string;
  group: string;
  target: string | undefined;
  rights: {
    user: string;
    group: string;
    other: string;
  }
}

type OSFtpListFileType = '-' | 'd' | 'l'; 
// 'file' | 'folder' | 'symlink'

export interface OSFtpListObject {
  count: number; // list.length
  list: OSFtpListFile[];
}

export interface OSFtpListError {
  msg: string;
  folder: string;
  filters: OSFtpListFilters;
  code?: OSFtpErrorCode;
}

list is the action to take a look at what is in ftp folder.

const sftpClient = new OSftp( config );

const connected = await sftpClient.connect();
if( ! connected.status ) { return connected; }

const files = await sftpClient.list();
console.log( files );
// -> { status: true, count: 7, list: [ ... ] }

sftpClient.disconnect();

• Filter: pattern

pattern filter can be a regular expression (most powerful option) or a simple glob-like string where * will match any number of characters, e.g.

foo* => foo, foobar, foobaz
*bar => bar, foobar, tabbar
*oo* => foo, foobar, look, book

response example

{
  status: true,
  count: // list.length
  list: [
    {
      type: // file type(-, d, l)
      name: // file name
      longname: // file name as linux promp
      path: // file path
      date: // file date of modified time
      modifyDate: // file date of modified time
      accessDate: // file date of access time
      size: // file size
      rights: { user: 'rwx', group: 'rwx', other: 'rwx' }
      owner: // user number ID
      group: // group number ID
    },
    ...
  ]
}

await .move()

await sftpClient.move( filepathFrom: string, filepathTo?: string ) 
  => Promise<OSFtpFileResponse>;

export type OSFtpFileResponse =
  | SResponseOKObject<OSFtpFileObject>
  | SResponseKOObject<OSFtpFileError>;

interface SResponseOKObject { 
  status: true;
  filename: string;
  filepath: string;
}

interface SResponseKOObject { 
  status: false;
  error: {
    msg: string;
    filepathFrom: string;
    filepathTo?: string;
    code?: OSFtpErrorCode;
  }
}

interface OSFtpFileObject {
  filename: string;
  filepath: string;
}

interface OSFtpFileError {
  msg: string;
  filepathFrom: string;
  filepathTo?: string;
  code?: OSFtpErrorCode;
}

move is the action to move from ftp folder to ftp folder (or event rename).

const sftpClient = new OSftp( config );

const connected = await sftpClient.connect();
if( ! connected.status ) { return connected; }

const moved = await sftpClient.move( 'custom-file.pdf', 'backup/custom-file.pdf' );
console.log( moved );
// -> { status: true, filename: 'custom-file.pdf', ... }

sftpClient.disconnect();

await .delete()

await sftpClient.delete( filepathFrom: string, strict?: boolean ) 
  => Promise<OSFtpFileResponse>;

export type OSFtpFileResponse =
  | SResponseOKObject<OSFtpFileObject>
  | SResponseKOObject<OSFtpFileError>;

interface SResponseOKObject { 
  status: true;
  filename: string;
  filepath: string;
}

interface SResponseKOObject { 
  status: false;
  error: {
    msg: string;
    filepathFrom: string;
    code?: OSFtpErrorCode;
  }
}

interface OSFtpFileObject {
  filename: string;
  filepath: string;
}

interface OSFtpFileError {
  msg: string;
  filepathFrom: string;
  code?: OSFtpErrorCode;
}

delete is the action to remove a file from ftp folder.

When strict = false and not found the file, it returns { status: true }.

const sftpClient = new OSftp( config );

const connected = await sftpClient.connect();
if( ! connected.status ) { return connected; }

const deleted = await sftpClient.delete( 'custom-file.pdf' );
console.log( deleted );
// -> { status: true, filename: 'custom-file.pdf', ... }

sftpClient.disconnect();

await .exists()

await sftpClient.exists( filepathFrom: string, disconnectWhenError?: boolean ) 
  => Promise<OSFtpExistResponse>;

export type OSFtpExistResponse =
  | SResponseOKObject<OSFtpExistObject>
  | SResponseKOObject<OSFtpExistError>;

interface SResponseOKObject { 
  status: true;
  filename: string;
  filepath: string;
  type: string;
}

interface SResponseKOObject { 
  status: false;
  error: {
    msg: string;
    filename: string;
    filepath: string;
    code?: OSFtpErrorCode;
  }
}

interface OSFtpExistObject {
  filename: string;
  filepath: string;
  type: string;
}

interface OSFtpExistError {
  msg: string;
  filename: string;
  filepath: string;
  code?: OSFtpErrorCode;
}

exists is the action to check if a file or folder exists in ftp folder.

const sftpClient = new OSftp( config );

const connected = await sftpClient.connect();
if( ! connected.status ) { return connected; }

const exists = await sftpClient.exists( 'custom-file.pdf' );
console.log( exists );
// -> { status: true, filename: 'custom-file.pdf', type: 'd' ... }

sftpClient.disconnect();

await .mkdir()

await sftpClient.mkdir( folder, recursive?: boolean, strict?: boolean ) 
  => Promise<OSFtpFolderResponse>;

export type OSFtpFolderResponse =
  | SResponseOKObject<OSFtpFolderObject>
  | SResponseKOObject<OSFtpFolderError>;

interface SResponseOKObject { 
  status: true;
  foldername: string;
  folderpath: string;
}

interface SResponseKOObject { 
  status: false;
  error: {
    msg: string;
    filepathFrom: string;
    code?: OSFtpErrorCode;
  }
}

interface OSFtpFolderObject {
  foldername: string;
  folderpath: string;
}

interface OSFtpFolderError {
  msg: string;
  folder: string;
  code?: OSFtpErrorCode;
}

mkdir is the action to create folders in ftp folder.

When recursive = true it allows to create the subfolders too.

When strict = false and folder already exist, it returns { status: true }.

const sftpClient = new OSftp( config );

const connected = await sftpClient.connect();
if( ! connected.status ) { return connected; }

const created = await sftpClient.mkdir( 'custom-folder/custom-subfolder' );
console.log( created );
// -> { status: true, foldername: 'custom-subfolder', ... }

sftpClient.disconnect();

await .rmdir()

await sftpClient.rmdir( folder, recursive?: boolean, strict?: boolean ) 
  => Promise<OSFtpFolderResponse>;

export type OSFtpFolderResponse =
  | SResponseOKObject<OSFtpFolderObject>
  | SResponseKOObject<OSFtpFolderError>;

interface SResponseOKObject { 
  status: true;
  foldername: string;
  folderpath: string;
}

interface SResponseKOObject { 
  status: false;
  error: {
    msg: string;
    filepathFrom: string;
    code?: OSFtpErrorCode;
  }
}

interface OSFtpFolderObject {
  foldername: string;
  folderpath: string;
}

interface OSFtpFolderError {
  msg: string;
  folder: string;
  code?: OSFtpErrorCode;
}

rmdir is the action to remove folders in ftp folder.

When recursive = true it allows to remove the folder-content too.

When strict = false and not found the folder, it returns { status: true }.

const sftpClient = new OSftp( config );

const connected = await sftpClient.connect();
if( ! connected.status ) { return connected; }

const removed = await sftpClient.rmdir( 'custom-folder', true );
console.log( removed );
// -> { status: true, foldername: 'custom-folder', ... }

sftpClient.disconnect();

Testing

If you want to run npm run test, it's required to declare your own ./test/config.json (you can copypaste it from ./test/config-default.json)

{
  "host": "IPADDRESS",
  "port": 22,
  "user": "user",
  "password": "password"
}

NOTICE: When tests are running, in the server ftp it's created (and removed when it has finished) the next folders:

• test-exists,
• test-mkdir,
• test-rmdir,
• test-list,
• test-delete,
• test-move,
• test-upload,
• test-download;
• test-exists-ts,
• test-mkdir-ts,
• test-rmdir-ts,
• test-list-ts,
• test-delete-ts,
• test-move-ts,
• test-upload-ts,
• test-download-ts; and the files ./zpython.pdf, ./zpython2.pdf.

So,

• rw permissions should be allowed,
• and if in your sftp server already exist them and there are required for you, avoid to run test.