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index.js
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index.js
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import https from "https";
import fs from "fs";
import dotenv from "dotenv";
import mime from "mime";
import mysql from "mysql2";
import {PROTOCOLS, log, respond, respondCustomHeaders, randomString} from "./utils.js";
import {getHackAttempts, recordHackAttempt} from "./hackattempts.js";
dotenv.config();
const protocol = PROTOCOLS.http;
export function getOriginalURL(request) {
return new URL(request.url, `${protocol.str}://${request.headers.host}`);
}
function respondWithFile(response, filename, code=200, contentType='text/html', replacements={}) {
fs.readFile(filename, (err, data) => {
if (err) {
recordHackAttempt(err.path)
respondWithError(response);
return;
}
if (contentType === 'text/html') {
data = data.toString();
for (const k in replacements) {
data = data.replace(new RegExp(`%%${k}%%`, 'g'), replacements[k]);
}
}
respond(response, data, code, contentType);
});
}
export function respondWithError(response, code=404) {
switch (code) {
case 404:
RESPONDERS.error404(response);
break;
default:
respondWithFile(response, 'error.html', code);
break;
}
}
const RESPONDERS = {
index: response => respondWithFile(response, 'hugo/public/index.html'),
error404: response => respondWithFile(response, 'hugo/public/404.html', 404),
gtfo: response => respondWithFile(response, 'gtfo.html', 404),
};
function getDBConnection() {
const db = mysql.createConnection({
host: 'localhost',
user: 'root',
password: process.env.MYSQL_PW,
database: 'nodestar'
});
db.connect(function (err) {
if (err) throw err;
log('Connected to MySql!');
});
return db;
}
const root = {
'spotify': (request, response, searchParams) => {
log('spotify callback')
const code = searchParams.get('code');
const state = searchParams.get('state');
if (!code || !state) {
respondWithError(response, 500);
return;
}
const outgoing = https.request(process.env.SPOTIFY_WEBHOOK, {
method: 'POST',
headers: {
'Content-Type': 'application/json'
}
}, res => {
respondWithFile(response, 'success.html');
});
outgoing.write(
JSON.stringify({
'content': JSON.stringify({
'code': code,
'state': state
})
})
);
outgoing.end();
},
'isitchristmas': (request, response, searchParams) => {
const today = new Date();
respond(response,
'<h1 style="text-align: center; font-size:50pt">' +
(today.getMonth() === 11 && today.getDate() === 25 ? 'YES' : 'NO') +
'</h1>'
);
},
'urlshorten': {
'*': (request, response, searchParams, path) => {
if (path === undefined) {
RESPONDERS.error404(response);
return;
}
if (path.length === 0) {
respondWithFile(response, 'urlshorten.html');
return;
}
if (path === 'submit') {
const id = randomString(8);
const url = decodeURI(searchParams.get('url'));
// should i be worried about id collisions? nahhhh
const db = getDBConnection();
db.query(
`INSERT INTO urlshorten (id, url) VALUES (?, ?);`,
[id, url],
(err, results, fields) => {
if (err) throw err;
const shorter = 'andrewjm.me/urlshorten/' + id;
const shortened = 'https://' + shorter;
respondWithFile(
response,
'urlshortensuccess.html',
200,
'text/html',
{'url': shortened, 'urlbrief': shorter}
);
db.end();
}
);
return;
}
const db = getDBConnection();
db.query(
`SELECT url FROM urlshorten WHERE id=?;`,
[path],
(err, results, fields) => {
if (err) throw err;
if (results.length === 0) {
RESPONDERS.error404(response);
return;
}
respondCustomHeaders(response, '', {'Location': results[0].url}, 301);
db.end();
}
);
}
},
'default': (request, response, searchParams) => {
RESPONDERS.index(response);
},
};
const server = protocol.module.createServer((request, response) => {
log(new Date().toString());
let url;
try {
url = getOriginalURL(request);
} catch (e) {
log('that didn\'t last long');
respondWithError(response, 500);
return;
}
log(url.toString());
log(`Received request for path ${url.pathname}`);
const pathSplit = url.pathname.trim().substring(1).split('/');
let current = root;
for (const p of pathSplit) {
if (!p) continue;
if (p in current) {
const next = current[p];
if (typeof next === 'object') {
current = next;
} else if (typeof next === 'function') {
try {
next(request, response, url.searchParams);
} catch (e) {
respondWithError(response, 500);
}
return;
}
} else if ('*' in current) {
try {
current['*'](request, response, url.searchParams, p); // TODO: include the remainder of pathSplit, after p
} catch (e) {
respondWithError(response, 500);
}
return;
} else {
log('Suspected hack attempt')
getHackAttempts(set => {
if (set.has(url.pathname) || url.pathname.includes('..')) {
recordHackAttempt(url.pathname);
RESPONDERS.gtfo(response);
return;
}
respondWithFile(response, 'hugo/public' + url.pathname, 200, mime.getType(url.pathname));
});
return;
}
}
if (typeof current === 'object' && 'default' in current) {
try {
current['default'](request, response, url.searchParams);
} catch (e) {
respondWithError(response, 500);
}
return;
}
if (typeof current === 'object' && '*' in current) {
try {
current['*'](request, response, url.searchParams, '');
} catch (e) {
respondWithError(response, 500);
}
return;
}
RESPONDERS.error404(response);
}).listen(protocol.port);
console.log(`nodestar listening on port ${protocol.port}`);