mirror of
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108 lines
2.9 KiB
JavaScript
108 lines
2.9 KiB
JavaScript
//
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// HotPocket client example code adopted from:
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// https://github.com/codetsunami/hotpocket/blob/master/hp_client.js
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//
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const fs = require('fs')
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const ws_api = require('ws');
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const sodium = require('libsodium-wrappers')
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const readline = require('readline')
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// sodium has a trigger when it's ready, we will wait and execute from there
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sodium.ready.then(main).catch((e) => { console.log(e) })
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function main() {
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var keys = sodium.crypto_sign_keypair()
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// check for client keys
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if (!fs.existsSync('.hp_client_keys')) {
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keys.privateKey = sodium.to_hex(keys.privateKey)
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keys.publicKey = sodium.to_hex(keys.publicKey)
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fs.writeFileSync('.hp_client_keys', JSON.stringify(keys))
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} else {
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keys = JSON.parse(fs.readFileSync('.hp_client_keys'))
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keys.privateKey = Uint8Array.from(Buffer.from(keys.privateKey, 'hex'))
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keys.publicKey = Uint8Array.from(Buffer.from(keys.publicKey, 'hex'))
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}
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var server = 'wss://localhost:8080'
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if (process.argv.length == 3) server = 'wss://localhost:' + process.argv[2]
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if (process.argv.length == 4) server = 'wss://' + process.argv[2] + ':' + process.argv[3]
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var ws = new ws_api(server, {
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rejectUnauthorized: false
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})
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/* anatomy of a public challenge
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{
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hotpocket: 0.1,
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type: 'public_challenge',
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challenge: '<hex string>'
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}
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*/
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// if the console ctrl + c's us we should close ws gracefully
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process.once('SIGINT', function (code) {
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console.log('SIGINT received...');
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ws.close()
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});
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ws.on('message', (m) => {
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console.log("-----Received raw message-----")
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console.log(m.toString())
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console.log("------------------------------")
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try {
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m = JSON.parse(m)
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} catch (e) {
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return
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}
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if (m.type != 'public_challenge') return
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console.log("Received challenge message")
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console.log(m)
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let pkhex = 'ed' + Buffer.from(keys.publicKey).toString('hex');
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console.log('My public key is: ' + pkhex);
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// sign the challenge and send back the response
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var sigbytes = sodium.crypto_sign_detached(m.challenge, keys.privateKey);
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var response = {
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type: 'challenge_response',
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challenge: m.challenge,
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sig: Buffer.from(sigbytes).toString('hex'),
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pubkey: pkhex
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}
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console.log('Sending challenge response...');
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ws.send(JSON.stringify(response))
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// start listening for stdin
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const rl = readline.createInterface({
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input: process.stdin,
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output: process.stdout
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});
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var input_pump = () => {
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rl.question('', (answer) => {
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ws.send(answer)
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input_pump()
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})
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}
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input_pump()
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});
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ws.on('close', () => {
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console.log('Server disconnected.');
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});
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}
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