John Potter johnmpotter
johnmpotter
/ verify.js
Last active
October 10, 2019 20:03
Node.js signature verification for BoletoSimples
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| import getRawBody from 'raw-body'; | |
| // Action pseudo code | |
| async webhook(req) { | |
| const key = KEY_FROM_BOLETOSIMPLES_WEBHOOK; | |
| const signature = req.header('X-Hub-Signature'); | |
| // This is the important part. It only works with the raw body (in the form of a Buffer). |
johnmpotter
/ getWeb3.js
Created
November 5, 2017 20:12
Dynamic Web3 initialization (using Web3 from other providers like Mist or MetaMask if available)
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| import Web3 from 'web3' | |
| let getWeb3 = new Promise(function(resolve, reject) { | |
| // Wait for loading completion to avoid race conditions with web3 injection timing. | |
| window.addEventListener('load', function() { | |
| var results | |
| var web3 = window.web3 | |
| // Checking if Web3 has been injected by the browser (Mist/MetaMask) | |
| if (typeof web3 !== 'undefined') { |