class Kojn::Ipn

Constants

ENCRYPTION
INTEGRITY

Attributes

content[RW]
invoice[RW]
mode[RW]
token[RW]

Public Class Methods

new(params) click to toggle source
# File lib/kojn/ipn.rb, line 8
def initialize params
  self.content = params

  self.ensure_secure(params)

  if params['token']
    self.mode = Kojn::Ipn::INTEGRITY
    self.invoice = params['invoice']
    self.token = params['token']

    raise AuthenticityException.new("ERROR -*- IPN Could not be verified. Please notify Kojn authors. This message has been fabricated. -*- ERROR") unless self.authentic?
  elsif params['iv']
    self.mode = Kojn::Ipn::ENCRYPTION
    self.decrypt
  end

  # Create a real object.
  self.invoice = Kojn::Invoice.new(self.invoice)
end

Public Instance Methods

authentic?() click to toggle source
# File lib/kojn/ipn.rb, line 28
def authentic?
  raise AuthenticityException.new("Checking if message is authentic while mode is set to Encryption") unless self.mode == Kojn::Ipn::INTEGRITY

  sha = Digest::SHA2.hexdigest "#{Kojn.api_key}#{self.invoice['internal_id']}#{self.invoice['received_amount']}"
  Rails.logger.info "sha: #{sha} tokne: #{self.token}"

  sha == self.token
end
decrypt() click to toggle source
# File lib/kojn/ipn.rb, line 37
def decrypt
  self.invoice = Kojn::crypto.decrypt_params(self.content)
end
ensure_secure(params) click to toggle source
# File lib/kojn/ipn.rb, line 41
def ensure_secure(params)
  if (params['token'] && Kojn.ipn_sec == :integrity) || (params['iv'] && Kojn.ipn_sec == :encryption)
    true
  else
    raise Kojn::AuthenticityException.new("ERROR -*- IPN security expected: #{Kojn.ipn_sec}. Opposite was found. -*- ERROR")
  end
end