require 'net/http' class Ipn < ActiveRecord::Base attr_accessible :data belongs_to :payment after_create :create_payment def self.new_from_dynamic_params(params) ipn = Ipn.new() ipn.attributes.each do |c| unless params[c.first.to_sym].nil? ipn[c.first.to_sym] = params[c.first.to_sym] end end return ipn end # Post back to Paypal to make sure it's valid def validate! uri = URI.parse('https://www.paypal.com/cgi-bin/webscr?cmd=_notify-validate') http = Net::HTTP.new(uri.host, uri.port) http.open_timeout = 60 http.read_timeout = 60 http.verify_mode = OpenSSL::SSL::VERIFY_NONE http.use_ssl = true response = http.post(uri.request_uri, self.data, 'Content-Length' => "#{self.data.size}", 'User-Agent' => "Ruby on Rails" ).body unless ["VERIFIED", "INVALID"].include?(response) Rails.logger.error "Faulty paypal result: #{response}" return false end unless response == "VERIFIED" Rails.logger.error "Invalid IPN: #{response}" return false end return true end def link_payment create_payment end private def create_payment # find user by email, then by payee user = User.find_by_email(self.payer_email) user = User.find_by_payee(self.payer_email) if user.nil? && self.payer_email.present? # Only create payments if the IPN matches a member if user.present? # And is a payment (not a cancellation, etc) payment_types = ["subscr_payment","send_money"] if payment_types.include?(self.txn_type) # And a member level if User.member_levels[self.payment_gross.to_i].present? payment = Payment.new payment.date = Date.strptime(self.payment_date, "%H:%M:%S %b %e, %Y %Z") payment.user_id = user.id payment.amount = self.payment_gross if payment.save self.payment_id = payment.id self.save! else return [false, "Unable to link payment. Payment error: #{payment.errors.full_messages.first}"] end else return [false, "Unable to link payment. Couldn't find membership level '#{self.payment_gross.to_i}'."] end else return [false, "Unable to link payment. Transaction is a '#{self.txn_type}' instead of '#{payment_types.inspect}'."] end else return [false, "Unable to link payment. Couldn't find user/payee '#{self.payer_email}'."] end return [true] end end