Class: Kortana::Webhook

Inherits:
Object
  • Object
show all
Defined in:
lib/kortana/webhooks.rb

Instance Method Summary collapse

Constructor Details

#initialize(secret) ⇒ Webhook

Returns a new instance of Webhook.



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# File 'lib/kortana/webhooks.rb', line 3

def initialize(secret)
  @secret = secret
end

Instance Method Details

#verify(payload, signature) ⇒ Object 



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# File 'lib/kortana/webhooks.rb', line 7

def verify(payload, signature)
  raise WebhookSignatureError, "Signature must not be empty" if signature.nil? || signature.strip.empty?
  raise WebhookSignatureError, "Webhook secret must not be empty" if @secret.nil? || @secret.strip.empty?

  expected = OpenSSL::HMAC.hexdigest(OpenSSL::Digest.new('sha256'), @secret, payload)

  unless secure_compare(expected, signature)
    raise WebhookSignatureError, "Webhook signature verification failed"
  end

  JSON.parse(payload)
rescue JSON::ParserError
  raise WebhookSignatureError, "Invalid JSON payload"
end