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python - Shopify Webhook HMAC 验证与 Flask

问题描述

我正在尝试验证收到的 Webhook 是否来自 Shopify。他们有这个文档，但它不起作用（出现类型错误）。

这是我到目前为止所拥有的。它不会产生错误，但该verify_webhook函数总是返回 false。

from flask import Flask, request, abort
import hmac
import hashlib
import base64

app = Flask(__name__)

SECRET = '...'


def verify_webhook(data, hmac_header):    
    digest = hmac.new(SECRET.encode('utf-8'), data, hashlib.sha256).digest()
    genHmac = base64.b64encode(digest)

    return hmac.compare_digest(genHmac, hmac_header.encode('utf-8'))


@app.route('/', methods=['POST'])
def hello_world(request):
    print('Received Webhook...')

    data = request.get_data()
    hmac_header = request.headers.get('X-Shopify-Hmac-SHA256')
    verified = verify_webhook(data, hmac_header)
    
    if not verified:
        return 'Integrity of request compromised...', 401
    
    print('Verified request...')


if __name__ == '__main__':
    app.run()

我究竟做错了什么？

标签： pythonflaskshopifywebhookshmac

解决方案

回答：

from flask import Flask, request, abort
import hmac
import hashlib
import base64

app = Flask(__name__)

SECRET = '...'


def verify_webhook(data, hmac_header):    
    digest = hmac.new(SECRET.encode('utf-8'), data, hashlib.sha256).digest()
    genHmac = base64.b64encode(digest)

    return hmac.compare_digest(genHmac, hmac_header.encode('utf-8'))


@app.route('/', methods=['POST'])
def hello_world(request):
    print('Received Webhook...')

    data = request.data # NOT request.get_data() !!!!!
    hmac_header = request.headers.get('X-Shopify-Hmac-SHA256')
    verified = verify_webhook(data, hmac_header)
    
    if not verified:
        return 'Integrity of request compromised...', 401
    
    print('Verified request...')


if __name__ == '__main__':
    app.run()

问题就在这data = request.get_data()条线上。

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