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Code to exit terminal if exit or ctrl + d is sent

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This commit is contained in:
Adithya1996 2022-03-19 20:53:18 +05:30
parent 32d65660eb
commit bda44b355a
1 changed files with 62 additions and 6 deletions
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68
app/server/socket.js
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@ -11,12 +11,66 @@ const SSH = require('ssh2').Client;
const CIDRMatcher = require('cidr-matcher');
const validator = require('validator');
const dnsPromises = require('dns').promises;
const input_hash_map = new Map();
// var fs = require('fs')
// var hostkeys = JSON.parse(fs.readFileSync('./hostkeyhashes.json', 'utf8'))
let termCols;
let termRows;
function checkdata(data, hash_key) {
input_str = input_hash_map.get(hash_key);
if (input_str === undefined) {
input_str = "";
}
let close = 0;
if (data === '\x04') { // ctrl + d
close = 1;
input_hash_map.delete(hash_key);
}
if (data === '\x7F') { // backspace
console.log('backspace');
if (input_str.length > 0) {
input_str = input_str.slice(0, -1);
console.log("new_str: ", input_str);
}
}
if (data === 'e') {
console.log('1st condition');
input_str += data;
}
if (data === 'x') {
if (input_str[0] === 'e') {
console.log('2nd condition');
input_str += data;
}
}
if (data === 'i') {
if ((input_str[0] === 'e') && (input_str[1] === 'x')) {
console.log('3rd condition');
input_str += data;
}
}
if (data === 't') {
if ((input_str[0] === 'e') && (input_str[1] === 'x') && (input_str[2] === 'i')) {
console.log('4th condition');
input_str += data;
}
}
if (data === '\r') { // enter
if ((input_str[0] === 'e') && (input_str[1] === 'x') && (input_str[2] === 'i') && (input_str[3] === 't')) {
console.log('5th condition');
input_str = "";
close = 1;
input_hash_map.delete(hash_key);
} else {
input_str = "";
}
}
input_hash_map.set(hash_key, input_str);
return close;
}
// public
module.exports = function appSocket(socket) {
async function setupConnection() {
@ -158,14 +212,16 @@ module.exports = function appSocket(socket) {
// clear \r\n
// `);
stream.write('clear \n');
stream.write(`docker exec -ti ${socket.request.session.ssh.container_id} /bin/bash \r`);
stream.write('enable -n exit \r');
stream.write('enable -n enable \r');
stream.write('export IGNOREEOF=1000000 \r');
stream.write('readonly IGNOREEOF \r');
stream.write(`docker exec -ti ${socket.request.session.ssh.container_id} /bin/sh \r`);
stream.write('clear \r');
socket.on('data', (data) => {
stream.write(data);
let exit_val = checkdata(data, socket.request.sessionID + socket.id);
if (exit_val === 1) {
stream.write(data);
conn.end();
} else {
stream.write(data);
}
});
socket.on('control', (controlData) => {
switch (controlData) {