Module: Diversion::Decode::Json

Defined in:

lib/diversion/decode/json.rb

Class Method Summary

• .get_hash(data, options) ⇒ Object

Class Method Details

.get_hash(data, options) ⇒ Object

Raises:

• (Error::BadUrlDataFormat)

# File 'lib/diversion/decode/json.rb', line 11

def get_hash(data, options)
  arr = data.split('-')
  raise Error::BadUrlDataFormat unless arr.length.between?(1,2)

  # get json from data
  json_raw = Url::decode_url(arr.first)

  # parse the JSON and catch any error
  begin
  hash = MultiJson.load(json_raw)
  rescue 
    return {:parsed => false}
  end

  # ensure hash can be accessed with strings or symbols
  hash = HashWithIndifferentAccess.new.merge(hash)

  hash[:parsed] = true # we have parsed the json

  # if signed data then extract keys and verify, else do nothing but update hash
  if arr.length == 2
    hash[:signed] = true
    hash[:key_presented] = arr[1]
    hash[:key_expected] = Signing::sign_data(options[:sign_key], options[:sign_length], json_raw)
    hash[:key_verified] = hash[:key_presented] == hash[:key_expected]
  else
    hash[:signed] = false
    hash[:key_presented] = ""
    hash[:key_expected] = ""
    hash[:key_verified] = false
  end
  hash.symbolize_keys
end