[ADD]Server : first SSH2 client / connection

package.json

@@ -17,7 +17,8 @@
   "private": true,
   "dependencies": {
     "polka": "^0.5.2",
-    "sirv": "^0.4.0"
+    "sirv": "^0.4.0",
+    "ssh2": "^0.8.4"
   },
   "devDependencies": {
     "@babel/core": "^7.4.4",

server.js

@@ -6,12 +6,59 @@ const http = require('http');
 const { join } = require('path');
 const polka = require('polka');
 const sirv = require('sirv');
+const { json } = require('body-parser');
+const sshClient = require('ssh2').Client;
 
 const { PORT=3000 } = process.env;
-const files = sirv('dist');
+const files = sirv('dist', {dev: true});
 const server = http.createServer();
 
-polka({ server }).use(files).listen(PORT, err => {
+let sshConn;
+
+const sendJSON = (res, httpCode, message) => {
+  res.writeHead(httpCode, { 'Content-Type': 'application/json' });
+  return JSON.stringify(message);
+};
+
+const connect = (req, res) => {
+  console.log(req.body);
+  if (!req.body.address.length || !req.body.username.length ||
+      !req.body.port.length || !req.body.key.length) {
+    res.end(sendJSON(res, 500, 'Erreur : un champ requis manque.'));
+  }
+  sshConn = new sshClient();
+  try {
+    sshConn.on('ready', () => {
+      console.log('Client :: ready');
+      res.end(sendJSON(res, 200, 'OK, connected!'));
+    }).connect({
+      host: req.body.address,
+      port: req.body.port,
+      username: req.body.username,
+      privateKey: req.body.key,
+      passphrase: req.body.password
+    });
+    sshConn.on('error', (err) => {
+      console.log(err);
+      res.end(sendJSON(res, 403, err.message));
+    });
+  }
+  catch(err) {
+    console.log(err);
+    res.end(sendJSON(res, 403, err.message));
+  }
+};
+
+const disconnect = (req, res) => {
+  sshConn.end();
+  res.end(sendJSON(res, 200, 'OK, disconnected!'));
+};
+
+polka({ server })
+  .use(json(), files)
+  .post('/connect', connect)
+  .get('/disconnect', disconnect)
+  .listen(PORT, err => {
   if (err) throw err;
   console.log(`> Running on localhost:${PORT}`);
 });