Class: ActiveMerchant::Billing::MitGateway

Inherits:
Gateway
  • Object
show all
Defined in:
lib/active_merchant/billing/gateways/mit.rb

Constant Summary

Constants inherited from Gateway

Gateway::CREDIT_DEPRECATION_MESSAGE, Gateway::RECURRING_DEPRECATION_MESSAGE, Gateway::STANDARD_ERROR_CODE

Instance Attribute Summary

Attributes inherited from Gateway

#options

Instance Method Summary collapse

Methods inherited from Gateway

#add_field_to_post_if_present, #add_fields_to_post_if_present, #card_brand, card_brand, #generate_unique_id, inherited, #supported_countries, supported_countries, supported_countries=, supports?, #supports_network_tokenization?, #test?

Methods included from CreditCardFormatting

#expdate, #format, #strftime_yyyymm

Methods included from PostsData

included, #raw_ssl_request, #ssl_get, #ssl_post, #ssl_request

Constructor Details

#initialize(options = {}) ⇒ MitGateway

Returns a new instance of MitGateway.



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# File 'lib/active_merchant/billing/gateways/mit.rb', line 21

def initialize(options = {})
  requires!(options, :commerce_id, :user, :api_key, :key_session)
  super
end

Instance Method Details

#authorize(money, payment, options = {}) ⇒ Object 



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# File 'lib/active_merchant/billing/gateways/mit.rb', line 79

def authorize(money, payment, options = {})
  post = {
    operation: 'Authorize',
    commerce_id: @options[:commerce_id],
    user: @options[:user],
    apikey: @options[:api_key],
    testMode: (test? ? 'YES' : 'NO')
  }
  add_invoice(post, money, options)
  # Payments contains the card information
  add_payment(post, payment)
  add_customer_data(post, options)
  post[:key_session] = @options[:key_session]

  post_to_json = post.to_json
  post_to_json_encrypt = encrypt(post_to_json, @options[:key_session])

  final_post = '<authorization>' + post_to_json_encrypt + '</authorization><dataID>' + @options[:user] + '</dataID>'
  json_post = final_post
  commit('sale', json_post)
end

#capture(money, authorization, options = {}) ⇒ Object 



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# File 'lib/active_merchant/billing/gateways/mit.rb', line 101

def capture(money, authorization, options = {})
  post = {
    operation: 'Capture',
    commerce_id: @options[:commerce_id],
    user: @options[:user],
    apikey: @options[:api_key],
    testMode: (test? ? 'YES' : 'NO'),
    transaction_id: authorization,
    amount: amount(money)
  }
  post[:key_session] = @options[:key_session]

  post_to_json = post.to_json
  post_to_json_encrypt = encrypt(post_to_json, @options[:key_session])

  final_post = '<capture>' + post_to_json_encrypt + '</capture><dataID>' + @options[:user] + '</dataID>'
  json_post = final_post
  commit('capture', json_post)
end

#cipher_key ⇒ Object 



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# File 'lib/active_merchant/billing/gateways/mit.rb', line 33

def cipher_key
  @options[:key_session]
end

#decrypt(val, keyinhex) ⇒ Object 



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# File 'lib/active_merchant/billing/gateways/mit.rb', line 37

def decrypt(val, keyinhex)
  # Splits the first 16 bytes (the IV bytes) in array format
  unpacked = val.unpack('m')
  iv_base64 = unpacked[0].bytes.slice(0, 16)
  # Splits the second bytes (the encrypted text bytes) these would be the
  # original message
  full_data = unpacked[0].bytes.slice(16, unpacked[0].bytes.length)
  # Creates the engine
  engine = OpenSSL::Cipher.new('aes-128-cbc')
  # Set engine as decrypt mode
  engine.decrypt
  # Converts the key from hex to bytes
  engine.key = [keyinhex].pack('H*')
  # Converts the ivBase64 array into bytes
  engine.iv = iv_base64.pack('c*')
  # Decrypts the texts and returns the original string
  engine.update(full_data.pack('c*')) + engine.final
end

#encrypt(val, keyinhex) ⇒ Object 



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# File 'lib/active_merchant/billing/gateways/mit.rb', line 56

def encrypt(val, keyinhex)
  # Creates the engine motor
  engine = OpenSSL::Cipher.new('aes-128-cbc')
  # Set engine as encrypt mode
  engine.encrypt
  # Converts the key from hex to bytes
  engine.key = [keyinhex].pack('H*')
  # Generates a random iv with this settings
  iv_rand = engine.random_iv
  # Packs IV as a Base64 string
  iv_base64 = [iv_rand].pack('m')
  # Converts the packed key into bytes
  unpacked = iv_base64.unpack('m')
  iv = unpacked[0]
  # Sets the IV into the engine
  engine.iv = iv
  # Encrypts the texts and stores the bytes
  encrypted_bytes = engine.update(val) + engine.final
  # Concatenates the (a) IV bytes and (b) the encrypted bytes then returns a
  # base64 representation
  [iv << encrypted_bytes].pack('m')
end

#extract_mit_responses_from_transcript(transcript) ⇒ Object 



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# File 'lib/active_merchant/billing/gateways/mit.rb', line 146

def extract_mit_responses_from_transcript(transcript)
  groups = transcript.scan(/reading \d+ bytes(.*?)read \d+ bytes/m)
  groups.map do |group|
    group.first.scan(/-> "(.*?)"/).flatten.map(&:strip).join('')
  end
end

#purchase(money, payment, options = {}) ⇒ Object 



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# File 'lib/active_merchant/billing/gateways/mit.rb', line 26

def purchase(money, payment, options = {})
  MultiResponse.run do |r|
    r.process { authorize(money, payment, options) }
    r.process { capture(money, r.authorization, options) }
  end
end

#refund(money, authorization, options = {}) ⇒ Object 



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# File 'lib/active_merchant/billing/gateways/mit.rb', line 121

def refund(money, authorization, options = {})
  post = {
    operation: 'Refund',
    commerce_id: @options[:commerce_id],
    user: @options[:user],
    apikey: @options[:api_key],
    testMode: (test? ? 'YES' : 'NO'),
    transaction_id: authorization,
    auth: authorization,
    amount: amount(money)
  }
  post[:key_session] = @options[:key_session]

  post_to_json = post.to_json
  post_to_json_encrypt = encrypt(post_to_json, @options[:key_session])

  final_post = '<refund>' + post_to_json_encrypt + '</refund><dataID>' + @options[:user] + '</dataID>'
  json_post = final_post
  commit('refund', json_post)
end

#scrub(transcript) ⇒ Object 



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# File 'lib/active_merchant/billing/gateways/mit.rb', line 153

def scrub(transcript)
  ret_transcript = transcript
  auth_origin = ret_transcript[/<authorization>(.*?)<\/authorization>/, 1]
  unless auth_origin.nil?
    auth_origin = auth_origin.gsub('\n', '')
    auth_decrypted = decrypt(auth_origin, @options[:key_session])
    auth_json = JSON.parse(auth_decrypted)
    auth_json['card'] = '[FILTERED]'
    auth_json['cvv'] = '[FILTERED]'
    auth_json['apikey'] = '[FILTERED]'
    auth_json['key_session'] = '[FILTERED]'
    auth_to_json = auth_json.to_json
    auth_tagged = '<authorization>' + auth_to_json + '</authorization>'
    ret_transcript = ret_transcript.gsub(/<authorization>(.*?)<\/authorization>/, auth_tagged)
  end

  cap_origin = ret_transcript[/<capture>(.*?)<\/capture>/, 1]
  unless cap_origin.nil?
    cap_origin = cap_origin.gsub('\n', '')
    cap_decrypted = decrypt(cap_origin, @options[:key_session])
    cap_json = JSON.parse(cap_decrypted)
    cap_json['apikey'] = '[FILTERED]'
    cap_json['key_session'] = '[FILTERED]'
    cap_to_json = cap_json.to_json
    cap_tagged = '<capture>' + cap_to_json + '</capture>'
    ret_transcript = ret_transcript.gsub(/<capture>(.*?)<\/capture>/, cap_tagged)
  end

  ref_origin = ret_transcript[/<refund>(.*?)<\/refund>/, 1]
  unless ref_origin.nil?
    ref_origin = ref_origin.gsub('\n', '')
    ref_decrypted = decrypt(ref_origin, @options[:key_session])
    ref_json = JSON.parse(ref_decrypted)
    ref_json['apikey'] = '[FILTERED]'
    ref_json['key_session'] = '[FILTERED]'
    ref_to_json = ref_json.to_json
    ref_tagged = '<refund>' + ref_to_json + '</refund>'
    ret_transcript = ret_transcript.gsub(/<refund>(.*?)<\/refund>/, ref_tagged)
  end

  groups = extract_mit_responses_from_transcript(transcript)
  groups.each do |group|
    group_decrypted = decrypt(group, @options[:key_session])
    ret_transcript = ret_transcript.gsub('Conn close', "\n" + group_decrypted + "\nConn close")
  end

  ret_transcript
end

#supports_scrubbing? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/active_merchant/billing/gateways/mit.rb', line 142

def supports_scrubbing?
  true
end