Class: Cryptopay::Callbacks

Inherits:

Object

• Object
• Cryptopay::Callbacks

Defined in:

lib/cryptopay/callbacks.rb

Instance Method Summary

• #initialize(secret) ⇒ Callbacks constructor

  A new instance of Callbacks.

• #verify(body, signature) ⇒ Object

  Verifies callback body and builds Callback object.

Constructor Details

#initialize(secret) ⇒ Callbacks

# File 'lib/cryptopay/callbacks.rb', line 5

def initialize(secret)
  @secret = secret
end

Instance Method Details

#verify(body, signature) ⇒ Object

Verifies callback body and builds Callback object

Raises:

• (SignatureVerificationError)

# File 'lib/cryptopay/callbacks.rb', line 13

def verify(body, signature)
  expected_signature = OpenSSL::HMAC.hexdigest('SHA256', secret, body)

  equals = secure_compare(signature, expected_signature)
  raise(SignatureVerificationError, 'Signature mismatch') unless equals

  data = JSON.parse(body, symbolize_names: true)
  Callback.build_from_hash(data)
end