正确的方式来验证来自WooCommerce webhooks的签名

Question

当我尝试验证来自WooCommerce webhooks的签名时，我遇到了一个奇怪的问题。这里是一部分，我用它来创建签名：

verified = crypto.createHmac('SHA256', secret).update(new Buffer(JSON.stringify(body), 'utf8')).digest('base64'); 

它适用于有removed话题每一个网络挂接，并请求主体等于这样的：

{"id":360} 

不幸的是，对于每一个与updated或created主题的webhook，我的签名是不一样的。请求主体也更复杂。

{"product":{"title":"Test","id":392,"created_at":"2017-02-11T21:40:37Z","updated_at":"2017-02-11T21:40:37Z","type":"simple","status":"publish","downloadable":false,"virtual":false,"permalink":"http://cedrus.ma/chezalfred/livraison/non classu00e9/test/","sku":"","price":"","regular_price":"","sale_price":null,"price_html":"","taxable":true,"tax_status":"taxable","tax_class":"","managing_stock":false,"stock_quantity":null,"in_stock":true,"backorders_allowed":false,"backordered":false,"sold_individually":false,"purchaseable":false,"featured":false,"visible":true,"catalog_visibility":"visible","on_sale":false,"product_url":"","button_text":"","weight":null,"dimensions":{"length":"","width":"","height":"","unit":"cm"},"shipping_required":true,"shipping_taxable":true,"shipping_class":"","shipping_class_id":null,"description":"","short_description":"","reviews_allowed":true,"average_rating":"0.00","rating_count":0,"related_ids":[],"upsell_ids":[],"cross_sell_ids":[],"parent_id":0,"categories":[],"tags":[],"images":[{"id":0,"created_at":"2017-02-11T21:40:40Z","updated_at":"2017-02-11T21:40:40Z","src":"http://cedrus.ma/chezalfred/wp-content/plugins/woocommerce/assets/images/placeholder.png","title":"Etiquette","alt":"Etiquette","position":0}],"featured_src":"","attributes":[],"downloads":[],"download_limit":0,"download_expiry":0,"download_type":"","purchase_note":"","total_sales":0,"variations":[],"parent":[],"grouped_products":[],"menu_order":0}} 

我认为当请求主体更复杂时，会发生JSON.stringify（）发生错误。

验证来自WooCommerce webhook的签名的正确方法是什么？

Answer 1

我遇到了类似的问题，因为你，使用相同的代码（它显然适用于某些人来说，这里提到：SHA256 webhook signature from WooCommerce never verifies）

什么终于为我工作在不同的获取原始体值这样，使用bodyParser中间件：
app.use(bodyParser.json({verify:function(req,res,buf){req.rawBody=buf}}))
（说明：https://github.com/expressjs/body-parser/issues/83#issuecomment-80784100）

使用 new Buffer(JSON.stringify(body), 'utf8')代替现在我只是用req.rawBody
我希望这也能解决你的问题。