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joshbeckman/index.js

Created October 10, 2015 17:37
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  1. joshbeckman created this gist Oct 10, 2015.
    41 changes: 41 additions & 0 deletions index.js
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,41 @@
    const PORT = 3000;
    const SECRET = 'APP_SHARED_SECRET';

    var http = require('http'),
    crypto = require('crypto'),
    server;

    function verifyShopifyHook(req) {
    var digest = crypto.createHmac('SHA256', SECRET)
    .update(new Buffer(req.body, 'utf8'))
    .digest('base64');

    return digest === req.headers['X-Shopify-Hmac-Sha256'];
    }

    function parseRequestBody(req, res) {
    req.body = '';

    req.on('data', function(chunk) {
    req.body += chunk.toString('utf8');
    });
    req.on('end', function() {
    handleRequest(req, res);
    });
    }

    function handleRequest(req, res) {
    if (verifyShopifyHook(req)) {
    res.writeHead(200);
    res.end('Verified webhook');
    } else {
    res.writeHead(401);
    res.end('Unverified webhook');
    }
    }

    server = http.createServer(parseRequestBody);

    server.listen(PORT, function(){
    console.log("Server listening on: http://localhost:%s", PORT);
    });