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Updated Webhook Service #1

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Updated Webhook Service #1

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8 changes: 6 additions & 2 deletions paystack/services/webhook_service.py
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Original file line number Diff line number Diff line change
Expand Up @@ -18,8 +18,12 @@ def webhook_handler(self):
except Exception as e: # If user hasn't declared variable
raise ValidationError(e)

webhook_data = self.request.data
hash = hmac.new(secret, webhook_data, digestmod=hashlib.sha512).hexdigest()
# Use self.request.body instead of self.request.data ==> according to Paystack docs.
# DRF request.data is a bit different from the default request.body
webhook_data = self.request.body

# using the secret key without encoding throws an error.
hash = hmac.new(secret.encode('utf-8'), webhook_data, digestmod=hashlib.sha512).hexdigest()

if hash != self.request.headers["x-paystack-signature"]:
raise ValidationError("MAC authentication failed")
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