/
encode.rb
67 lines (51 loc) · 1.38 KB
/
encode.rb
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# frozen_string_literal: true
require_relative './claims_validator'
# JWT::Encode module
module JWT
# Encoding logic for JWT
class Encode
ALG_NONE = 'none'.freeze
ALG_KEY = 'alg'.freeze
def initialize(options)
@payload = options[:payload]
@key = options[:key]
@algorithm = options[:algorithm]
@headers = options[:headers]
end
def segments
@segments ||= combine(encoded_header_and_payload, encoded_signature)
end
private
def encoded_header
@encoded_header ||= encode_header
end
def encoded_payload
@encoded_payload ||= encode_payload
end
def encoded_signature
@encoded_signature ||= encode_signature
end
def encoded_header_and_payload
@encoded_header_and_payload ||= combine(encoded_header, encoded_payload)
end
def encode_header
encode(@headers.merge(ALG_KEY => @algorithm))
end
def encode_payload
if @payload && @payload.is_a?(Hash)
ClaimsValidator.new(@payload).validate!
end
encode(@payload)
end
def encode_signature
return '' if @algorithm == ALG_NONE
JWT::Base64.url_encode(JWT::Signature.sign(@algorithm, encoded_header_and_payload, @key))
end
def encode(data)
JWT::Base64.url_encode(JWT::JSON.generate(data))
end
def combine(*parts)
parts.join('.')
end
end
end