webssh/README.rst

WebSSH
------

|Build Status| |codecov| |PyPI - Python Version| |PyPI|

Introduction
------------

A simple web application to be used as an ssh client to connect to your
ssh servers. It is written in Python, base on tornado, paramiko and
xterm.js.

Features
--------

-  SSH password authentication supported, including empty password.
-  SSH public-key authentication supported, including DSA RSA ECDSA
   Ed25519 keys.
-  Encrypted keys supported.
-  Fullscreen terminal supported.
-  Terminal window resizable.
-  Auto detect the ssh server's default encoding.
-  Modern browsers including Chrome, Firefox, Safari, Edge, Opera
   supported.

Preview
-------

|Login| |Terminal|

How it works
~~~~~~~~~~~~

::

    +---------+     http     +--------+    ssh    +-----------+
    | browser | <==========> | webssh | <=======> | ssh server|
    +---------+   websocket  +--------+    ssh    +-----------+

Requirements
~~~~~~~~~~~~

-  Python 2.7/3.4+

Quickstart
~~~~~~~~~~

1. Install this app, run command ``pip install webssh``
2. Start a webserver, run command ``wssh``
3. Open your browser, navigate to ``127.0.0.1:8888``
4. Input your data, submit the form.

Server options
~~~~~~~~~~~~~~

.. code:: bash

    # listen address and port
    wssh --address='0.0.0.0' --port=8000

    # missing host key policy
    wssh --policy=reject

    # logging level
    wssh --logging=debug

    # log to file
    wssh --log-file-prefix=main.log

    # more options
    wssh --help

Use console
~~~~~~~~~~~

.. code:: javascript

    // connect to your ssh server
    wssh.connect(hostname, port, username, password, privatekey);

    // pass an object to wssh.connect
    var opts = {
      hostname: 'hostname',
      port: 'port',
      username: 'username',
      password: 'password',
      privatekey: 'the private key text'
    };
    wssh.connect(opts);

    // without an argument, wssh will use the form data to connect
    wssh.connect();

    // set a new encoding for client to use
    wssh.set_encoding(encoding);

    // reset encoding to use the default one
    wssh.reset_encoding();

    // send a command to the server
    wssh.send('ls -l');

Tests
~~~~~

Use unittest to run all tests

::

    python -m unittest discover tests

Use pytest to run all tests

::

    python -m pytest tests

An example of config for running this app behind an Nginx server
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code:: nginx

    location / {
        proxy_pass http://127.0.0.1:8888;
        proxy_http_version 1.1;
        proxy_read_timeout 300;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection "upgrade";
        proxy_set_header Host $http_host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Real-PORT $remote_port;
    }

Tips
----

-  Try to use Nginx as a front web server (see config example above) and
   enable SSL, this will prevent your ssh credentials from being
   uncovered. Also afterwards the communication between your browser and
   the web server will be encrypted as they use secured websockets.
-  Try to use reject policy as the missing host key policy along with
   your verified known\_hosts, this will prevent man-in-the-middle
   attacks. The idea is that it checks the system host keys
   file("~/.ssh/known\_hosts") and the application host keys
   file("./known\_hosts") in order, if the ssh server's hostname is not
   found or the key is not matched, the connection will be aborted.

.. |Build Status| image:: https://travis-ci.org/huashengdun/webssh.svg?branch=master
   :target: https://travis-ci.org/huashengdun/webssh
.. |codecov| image:: https://codecov.io/gh/huashengdun/webssh/branch/master/graph/badge.svg
   :target: https://codecov.io/gh/huashengdun/webssh
.. |PyPI - Python Version| image:: https://img.shields.io/pypi/pyversions/webssh.svg
.. |PyPI| image:: https://img.shields.io/pypi/v/webssh.svg
.. |Login| image:: https://github.com/huashengdun/webssh/raw/master/preview/login.png
.. |Terminal| image:: https://github.com/huashengdun/webssh/raw/master/preview/terminal.png