Skip to content

Instantly share code, notes, and snippets.

View hash-passphrase.js
import util from 'util';
import crypto from 'crypto';
const HASH_ALGO = 'sha512';
// nist recommends 10000, 10x nist, approx 83ms on i7-8650U
const HASH_ITERATIONS = 100000;
const HASH_SALT_BYTES = 16; // Exceeds NIST Minimum 32/8 (4 bytes)
const HASH_BYTES = 64; // Match Hash Algorithm lengh / bits (512 / 8);
View sanitize-html-browser.js
function sanitizeHtml(input) {
if (typeof input !== 'string') return input;
if (input.indexOf('<') === -1) return input;
const div = document.createElement('div');
div.innerHTML = input;
div.querySelectorAll('script').forEach((el) => el.remove());
div.querySelectorAll('style').forEach((el) => el.remove());
div.querySelectorAll('*').forEach((el) => {
const events = el.getAttributeNames().filter((a) => a.indexOf('on') === 0);
@tracker1
tracker1 / text.dat.js
Created Jun 15, 2020
Synchronet Default text.dat as JavaScript
View text.dat.js
// save to (exec/mods)/text.dat.js - at the top of login/login/shell files, load('text.dat.js')
bbs.replace_text(/* MsgSubj */ 1, "\1n\1h\1c\xda\xc4\xc4\xc4\xc4\xc4\xc4\1n\xc4\xc4\xc4\xc4\xc4\xc4\1h\1k\xc4\xc4\xc4\xc4\xc4\xc4\xc4\1n\1c\xc4\xc4\xc4\xc4\xc4\xfa\xfa\xfa\xfa\r\n\1h\xb3 \1bSubj\1n\1b: \1h\1c%.70s");
bbs.replace_text(/* MsgAttr */ 2, "\r\n\xb3 \1bAttr\1n\1b: \1h\1c%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s");
bbs.replace_text(/* MsgTo */ 3, "\r\n\xb3 \1bTo \1n\1b: \1h\1c%.70s");
bbs.replace_text(/* MsgToExt */ 4, " #%s");
bbs.replace_text(/* MsgToNet */ 5, " (%.40s)");
bbs.replace_text(/* MsgFrom */ 6, "\r\n\1w\xb3 \1bFrom\1n\1b: \1h\1c%.33s");
bbs.replace_text(/* MsgFromExt */ 7, " #%s");
bbs.replace_text(/* MsgFromNet */ 8, " (%.35s)");
bbs.replace_text(/* MsgDate */ 9, "\r\n\1w\xb3 \1bDate\1n\1b: \1h\1c%.24s %s (%s)\r\n\1w\xc0\xc4\xc4\xc4\xc4\xc4\xc4\1c\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\1n\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\1h\1k\xc4\xc4\xc4\xc4\xc4\xc4\xc4\xc4\1n\1c\xc4\xc4\xc4\xc4\xc4\xc4\xc4\
View .eslintrc.js
module.exports = {
parser: 'babel-eslint',
extends: ['plugin:prettier/recommended', 'prettier/react'],
plugins: ['prettier', 'jest'],
parserOptions: {
sourceType: 'module',
ecmaVersion: 2020,
ecmaFeatures: {
jsx: true,
},
@tracker1
tracker1 / settings.json
Created May 6, 2020
vs code settings for synchronet /sbbs/.vscode/settings.json
View settings.json
{
"editor.rulers": [
76,
80
],
"editor.tabSize": 2,
"editor.renderControlCharacters": true,
"files.encoding": "cp437",
"files.associations": {
"*.ssjs": "javascript"
@tracker1
tracker1 / load-component-import.js
Created May 6, 2020
Code Splitting via lazy import with React
View load-component-import.js
/*
/feature/load-component-import.js
This is used by any async loading areas of the application
import load from '../load-component-import.js';
const FooComponentAsync = load(() => import('./FooComponent'))';
*/
import React, { Suspense } from 'react';
@tracker1
tracker1 / precheck.js
Created Mar 28, 2020
Modern browser SPA precheck.js
View precheck.js
// precheck
try {
eval('(function() { async _ => _; })();');
if (typeof fetch !== 'function') throw new Error('No fetch api');
} catch (e) {
// render unsupported message in half a second - after error trap
window.setTimeout(function() {
// fallback render for development
var body = document.getElementsByTagName('body')[0];
body.className = 'message';
@tracker1
tracker1 / settings.json
Created Mar 21, 2020
/sbbs/.vscode/settigns.json - Synchronet config for editing with VS Code.
View settings.json
{
"editor.rulers": [
76,
80
],
"editor.tabSize": 2,
"editor.renderControlCharacters": true,
"files.encoding": "cp437",
"files.associations": {
"*.ssjs": "javascript"
@tracker1
tracker1 / future.js
Last active Feb 3, 2020
Node Promise + EventEmitter
View future.js
module.exports = () => {
// break resolve and reject out of a promise
let resolve, reject;
const promise = new Promise((res, rej) => {
resolve = res;
reject = rej;
});
// return as a future
return {
@tracker1
tracker1 / index.js
Created Dec 17, 2019
Application Initialization
View index.js
/*
The application uses os-service module to register itself in to an
environment based on command line parameters.
*/
const SERVICE_NAME = "my-service-name"; // TODO: changeme
// https://www.npmjs.com/package/os-service - using fork for 12.13 for now
const service = require("os-service");
const startServer = require("./feature/web-server");