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https://github.com/suutaku/sshx

P2P SSH using WebRTC
https://github.com/suutaku/sshx

fuse golang nat-traversal p2p proxy remote-control sftp ssh sshfs tunnel vnc webrtc

Last synced: 7 days ago
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P2P SSH using WebRTC

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# SSHX

[![Build Status](https://travis-ci.com/suutaku/sshx.svg?branch=master)](https://travis-ci.com/suutaku/sshx)
[![Go Report Card](https://goreportcard.com/badge/github.com/suutaku/sshx)](https://goreportcard.com/report/github.com/suutaku/sshx)

ssh p2p tunneling service. An enhanced version of
`https://github.com/nobonobo/ssh-p2p.git`.

## Connection sequence

```
.-----------. .------. .----------------. .------. .--------------.
|Impl Dialer| |Node A| |Signaling server| |Node B| |Impl Responser|
'-----------' '------' '----------------' '------' '--------------'
| | | | |
|connection request| | | |
|----------------->| | | |
| | | | |
| |send signaling request (OFFER)| | |
| |----------------------------->| | |
| | | | |
| | | dispatch OFFER | |
| | |------------------------------->| |
| | | | |
| | |send signaling response (ANWSER)| |
| | |<-------------------------------| |
| | | | |
| | dispatch ANWSER | | |
| |<-----------------------------| | |
| | | | |
| wrap connection | | | |
|<-----------------| | | |
| | | | |
| | establish connection (DATA CHANNEL) | |
| |-------------------------------------------------------------->| |
| | | | |
| | | |wrap connection|
| | | |-------------->|
| | | | |
| | do response | |
|<-------------------------------------------------------------------------------------------------|
.-----------. .------. .----------------. .------. .--------------.
|Impl Dialer| |Node A| |Signaling server| |Node B| |Impl Responser|
'-----------' '------' '----------------' '------' '--------------'

```

## Backend protocol

* RTCDataChannel/WebRTC: [https://github.com/pion/webrtc/v3](https://github.com/pion/webrtc/v3)
* Signaling server: [http://peer1.xxxxxxxx.com:8990](http://peer1.xxxxx.com:8990)

Server is not stable, just for testing. **Please use your own signaling server on production**.

## Install

### Requirements

`https://github.com/go-vgo/robotgo #Requirements`

### Signaling server
```bash
go get -u github.com/suutaku/sshx/cmd/signaling
```

### SSHX
```bash
go get -u github.com/suutaku/sshx/cmd/sshx
```

### Install as a system daemon

#### Mac OSX & Linux

```bash
git clone https://github.com/suutaku/sshx
cd sshx
sudo ./build.sh install ## for sshx
sudo ./build.sh install signaling ## both sshx and signaling server
```

### Windows
I don't have Windows device so i don't know how to create and test install scripts, maybe some can write a script for windows user.

## Configuration
Configure file will created at first time at path: `$HOME/.sshx_config.json`. You can also set root path of sshx with `SSHX_HOME` environment value.
Default configure as below:

```json
{
"id": "dd88229c-ad13-4210-a1ad-3d59f12e0655",
"locallistenaddr": "127.0.0.1:2222",
"localsshaddr": "127.0.0.1:22",
"rtcconf": {
"iceservers": [
{
"urls": [
"stun:stun.l.google.com:19302"
]
}
]
},
"signalingserveraddr": "http://signalingserver.xxxxx.com:8990"
}
```
* `locallistenaddr` : sshx listen address.
* `localsshaddr`: server sshd listen address.
* `rtcconf`: STUN server configure.
* `signalingserveraddr`: signaling server address.

## Usage
* Signaling server
Specify server listening port by environment variable **PORT**, default **8080**.

```bash
export SSHX_SIGNALING_PORT=[port you want] #default port is 8080
signaling
```

* SSHX

Start sshx:

```bash
Usage: sshx COMMAND [arg...]

a webrtc based ssh remote toolbox

Commands:
daemon launch a sshx daemon
config list configure informations
connect connect to remote host
copy-id copy public key to server
copy copy files or directory from/to remote host
proxy start proxy
status get status
fs sshfs filesystem

Run 'sshx COMMAND --help' for more information on a command.
```
Daemoon

```bash
sshx daemon
```
**Note:** befor you run any command of sshx, you must run sshx as a daemon first.

List configure informations

```bash
sshx list
```

Connect a remote device with ID or IP(domain)

```bash
Usage: sshx connect [ -X ] [ -i ] [ -p ] ADDR

connect to remote host

Arguments:
ADDR remote target address [username]@[host]:[port]

Options:
-X, --x11 using X11 opton, default false
-i, --identification a private path, default empty for ~/.ssh/id_rsa
-p remote host port (default "22")
```
Copy a file or dierctory just like ssh does

```bash
Usage: sshx copy FROM TO

cpy files or directories to remote host

Arguments:
FROM file or directory path which want to coy
TO des path
```

Proxy

```bash
Usage: sshx proxy COMMAND [arg...]

manage proxy

Commands:
start start a proxy

Run 'sshx proxy COMMAND --help' for more information on a command.
```

VNC

sshx contained a `noVNC` client which write with Javascript. To use client just access `http://vnc.sshx.wz` (not working with VPN environment) or `http://127.0.0.1` and input device ID in setting menu.

Copy ID

```bash
Usage: sshx copy-id ADDR

copy public key to server

Arguments:
ADDR remote target address [username]@[host]:[port]
```

SSHFS

```bash
Usage: sshx fs COMMAND [arg...]

sshfs filesystem

Commands:
mount mount a remote filesystem
unmount unmount a remote filesystem

Run 'sshx fs COMMAND --help' for more information on a command.
```

Status

Show current connections

## Appliction

Using sshx, you can write your own NAT-Traversal applications by implement `Impl` at `github.com/suutaku/sshx/pkg/impl`:

```golang
type Impl interface {
// set implementation specifiy configure
Init(ImplParam)

// return the application code, see pkg/types/types.go
Code() int32
// Writer of dialer
DialerWriter() io.Writer
// Writer of responser
ResponserWriter() io.Writer
// Reader of dialer
DialerReader() io.Reader
// Reader of responser
ResponserReader() io.Reader
// Response of remote device call
Response() error
// Call remote device
Dial() error
// Close Impl connection
Close()
// Set pairId dynamiclly
SetPairId(id string)
}
```

basically, `Impl` can acts as a `Dialer` or `Responser`. A `Dialer` send an connection request to local node to tell it which application will used for this connection.
local node make a P2P connection to target device and `Responser` at target devie response your request. see more `pkg/impl/impl_ssh.go`.

Features

- [x] Connect devices directly like ssh client does
- [x] Private key loggin
- [x] X11 forwarding
- [x] Connect devices behind NAT
- [x] Copy file or directory like scp does
- [x] Custom device ID
- [x] Custom signaling server
- [x] Multiple connection with one remote device
- [x] A simple signaling server implementation
- [ ] Pure go (due the `github.com/go-vgo/robotgo`)
- [x] Lunux system service supporting
- [x] VS Code SSH remote suportting (use proxy way due the VS Code not an open source project)
- [x] VNC supporting (both vnc server and client)
- [x] Ssh-fs supporting