tntdev21’s gists

tntdev21 / TestRandom.sol

Last active October 20, 2022 09:28

The random function on solidity, read more in Vietnamese: https://nhatky.dev/2022/10/20/minh-dang-dung-ham-solidity-random-number-nhu-nay

	// SPDX-License-Identifier: MIT

	pragma solidity 0.8.0;

	import "./libs/zeppelin/token/BEP20/IBEP20.sol";

	interface ILPToken is IBEP20 {
	function getReserves() external view returns (uint, uint);
	}

tntdev21 / TheAirdropDistributor.sol

Last active April 27, 2022 04:47

Airdrop contract distributor using ECDSA signature

	// SPDX-License-Identifier: MIT

	pragma solidity 0.8.0;

	import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
	import "@openzeppelin/contracts/utils/cryptography/draft-EIP712.sol";
	import "../libs/fota/MerkelProof.sol";

	contract TheAirdropDistributor is EIP712 {

tntdev21 / TheAirdropDistributor.sol

Last active October 25, 2022 03:38

Airdrop contract distributor by merkle tree vs ECDSA signature

	// SPDX-License-Identifier: MIT

	pragma solidity 0.8.0;

	import "@openzeppelin/contracts-upgradeable/utils/cryptography/ECDSAUpgradeable.sol";
	import "@openzeppelin/contracts-upgradeable/utils/cryptography/draft-EIP712Upgradeable.sol";
	import "../libs/fota/MerkelProof.sol";

	contract TheAirdropDistributor is EIP712Upgradeable {

tntdev21 / merkleTree.js

Last active June 9, 2022 10:38

	import Web3 from 'web3'
	import { whiteList } from './whiteList'

	const web3Provider = new Web3.providers.HttpProvider('https://bsc-dataseed1.binance.org:443')
	const web3 = new Web3(web3Provider)

	const merkleTree = {
	leaves: null,
	root: null
	}

tntdev21 / MessageVerifier.sol

Last active April 22, 2022 06:49

Sign the eip-712 message using privateKey with nodejs

	// SPDX-License-Identifier: MIT

	pragma solidity 0.8.0;

	import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
	import "@openzeppelin/contracts/utils/cryptography/draft-EIP712.sol";

	contract MessageVerifier is EIP712 {

	constructor(string memory _name, string memory _version) EIP712(_name, _version) {

tntdev21 / gist:aeca468c9a0433d6b531a7ee9a0d33d9

Created April 2, 2020 02:41

haproxy.cfg

	global
	log /dev/log local0
	log /dev/log local1 notice
	chroot /var/lib/haproxy
	stats socket /run/haproxy/yyy.sock mode 660 level yyy
	stats timeout 30s
	user haproxy
	group haproxy
	daemon
	maxconn 2048

tntdev21 / ethereum-private-key-recoverer.js

Created May 22, 2019 14:03

The snip code to recover ethereum private key when we know the address and some-chars-missed-private-key

	const util require('util')
	const eUtil = require('ethereumjs-util')

	function translate(str = '', list = []) {
	for (const i of list) {
	str = util.format(str, i)
	}
	return str
	}

tntdev21 / sharer.js

Created February 25, 2019 10:13

	import moment from 'moment'
	import lodash from 'lodash'
	import map from 'apr-map'
	import timeFormater from 'moment-duration-format'
	import asyncUtil from './util/async'
	import util from './util/index'
	import ncp from 'copy-paste'

	require('colors')

tntdev21 / service.js

Created February 25, 2019 10:09

	import { User } from '../../models'
	import tokenGenerator from '../../utils/token-generator'
	import config from '../../configs'

	async function signupUser(body) {
	let user = await User.create(body)
	const tokenData = user.genTokenData()
	user = await User.commonUserData(user.toJSON())
	user.token = tokenGenerator.generate(tokenData)
	user.refreshToken = tokenGenerator.generate(tokenData, { expiresIn: config.refreshTokenLife })

tntdev21 / controller.js

Created February 25, 2019 10:07

	import { User } from '../../models'
	import { userLocale } from '../../locales'
	import service from './service'
	import responseBuilder from '../../utils/response-builder'
	import errorUtil from '../../utils/error'
	import to from '../../utils/to'

	async function show(req, res) {
	const [error, user] = await to(User.commonUserData(req.user))
	if (error) {

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