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WebServer.js
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WebServer.js
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//#region consts
const http = require('http');
const url = require('url');
const path = require('path');
const fs = require('fs');
const { setTimeout } = require('timers');
const port = 8989;
const requestsInterval = 5000;
const maxRequests = 50;
const blockedIPs = new Set();
const requestCounts = {};
//#endregion
printCoolBanner();
server = http.createServer(function (request, response) {
if (path.normalize(decodeURI(request.url)) !== decodeURI(request.url)) {
response.statusCode = 403;
response.end();
return;
}
var uri = url.parse(request.url).pathname
var filename = path.join(process.cwd(), uri);
const ConnectedUser = request.socket.remoteAddress.toString();
//my poorly crafted attempt at blocking layer 7 attacks..
if (blockedIPs.has(ConnectedUser)) {
//response.writeHead(403, { "Content-Type": "text/plain"});
//response.write("Forbidden\n");
response.end();
request.destroy();
console.log("\x1b[31m" + ConnectedUser + " is blocked | still knocking.\x1b[0m");
Log2File(ConnectedUser + " is blocked | still knocking.");
return;
}
requestCounts[ConnectedUser] = (requestCounts[ConnectedUser] || 0) + 1;
if (requestCounts[ConnectedUser] >= maxRequests) {
blockUser(ConnectedUser);
response.writeHead(403, { "Content-Type": "text/plain" });
response.write("Forbidden\n");
response.end();
console.log("\x1b[33m" + ConnectedUser + " made too many requests. Redirecting..\x1b[0m");
Log2File(ConnectedUser + " made too many requests. Redirecting..");
request.socket.destroy();
//forwardRequest(request, null, "https://google.com/");
return;
}
fs.exists(filename, function (exists) {
if (!exists) {
response.writeHead(404, { "Content-Type": "text/plain" });
response.write("404 Not Found\n");
response.end();
console.log("\x1b[31m" + request.socket.remoteAddress.toString() + " tried accessing: " + filename + " with response: " + response.statusCode + "\npotential brute force attack?\x1b[0m");
Log2File(request.socket.remoteAddress.toString() + " tried accessing: " + filename + " with response: " + response.statusCode + "\n\npotential brute force attack?");
return;
}
console.log("\x1b[36m" + request.socket.remoteAddress.toString() + " accessed: " + filename + " with response: " + response.statusCode + "\x1b[0m");
Log2File(request.socket.remoteAddress.toString() + " accessed: " + filename + " with response: " + response.statusCode);
if (fs.statSync(filename).isDirectory()) filename += 'index.php';
fs.readFile(filename, "binary", function (err, file) {
if (err) {
response.writeHead(500, { "Content-Type": "text/plain" });
response.write(err + "\n");
response.end();
return;
}
response.writeHead(200);
response.write(file, "binary");
response.end();
});
});
}).listen(parseInt(port, 10));
const baseUrl = 'www.google.com';
server.on('request', (req, res) => {
if (blockedIPs.has(server.ConnectedUser)){
var connector = http.request({
host: baseUrl,
path:'/',
method: 'GET',
headers: req.headers
}, (resp) => {
resp.pipe(res);
});
}
});
console.log("\x1b[32mWebServerHost is now running at\n => http://localhost:" + port + "/\nCTRL + C to shutdown\x1b[0m");
Log2File("WebServerHost is now running at\n => http://localhost:" + port + "/\nCTRL + C to shutdown");
//#region functions
//prints said cool banner in magenta!
function printCoolBanner() {
console.clear();
var banner = [
"\x1b[35m███╗ ██╗ ██████╗ ██████╗ ███████╗███████╗███████╗██████╗ ██╗ ██╗███████╗██████╗\x1b[0m",
"\x1b[35m████╗ ██║██╔═══██╗██╔══██╗██╔════╝██╔════╝██╔════╝██╔══██╗██║ ██║██╔════╝██╔══██╗\x1b[0m",
"\x1b[35m██╔██╗ ██║██║ ██║██║ ██║█████╗ ███████╗█████╗ ██████╔╝██║ ██║█████╗ ██████╔╝\x1b[0m",
"\x1b[35m██║╚██╗██║██║ ██║██║ ██║██╔══╝ ╚════██║██╔══╝ ██╔══██╗╚██╗ ██╔╝██╔══╝ ██╔══██╗\x1b[0m",
"\x1b[35m██║ ╚████║╚██████╔╝██████╔╝███████╗███████║███████╗██║ ██║ ╚████╔╝ ███████╗██║ ██║\x1b[0m",
"\x1b[35m╚═╝ ╚═══╝ ╚═════╝ ╚═════╝ ╚══════╝╚══════╝╚══════╝╚═╝ ╚═╝ ╚═══╝ ╚══════╝╚═╝ ╚═╝\x1b[0m",
"\n\n"
];
banner.forEach(function(entry) {
console.log(entry);
});
}
function blockUser(ip) {
blockedIPs.add(ip);
setTimeout(() => {
blockedIPs.delete(ip);
delete requestCounts[ip];
}, requestsInterval);
}
function forwardRequest(req, res, targetUrl) {
const requestOptions = {
method: req.method,
headers: req.headers,
};
const parsedUrl = url.parse(targetUrl);
const forwardReq = http.request({
...requestOptions,
hostname: parsedUrl.hostname,
port: parsedUrl.port || (parsedUrl.protocol === 'https:' ? 443 : 80),
path: parsedUrl.path,
});
req.pipe(forwardReq);
forwardReq.on('response', (forwardRes) => {
res.writeHead(forwardRes.statusCode, forwardRes.headers);
forwardRes.pipe(res);
});
forwardReq.on('error', (err) => {
console.error('Error forwarding request:', err.message);
res.writeHead(500, { 'Content-Type': 'text/plain' });
res.end('Internal Server Error');
});
req.on('error', (err) => {
console.error('Error reading incoming request:', err.message);
res.writeHead(500, { 'Content-Type': 'text/plain' });
res.end('Internal Server Error');
});
req.on('end', () => {
forwardReq.end();
});
}
//logging function formatted ISO8601: YYYY-MM-DD HH:MM:SS
function Log2File(inputString) {
const logFilePath = './SelfWebHost.log';
let current = new Date();
let cDate = current.getFullYear() + '-' + (current.getMonth() + 1) + '-' + current.getDate();
let cTime = current.getHours() + ":" + current.getMinutes() + ":" + current.getSeconds();
let dateTime = cDate + ' ' + cTime;
fs.appendFile(logFilePath, dateTime + " | " + inputString + '\n', (err) => {
if (err) {
console.log('Failed to write string to file!');
}
});
}
//#endregion