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require 'active_support/security_utils'
module JSON
module JOSE
extend ActiveSupport::Concern
included do
extend ClassMethods
register_header_keys :alg, :jku, :jwk, :x5u, :x5t, :x5c, :kid, :typ, :cty, :crit
# NOTE: not used anymore in this gem, but keeping in case developers are calling it.
alias_method :algorithm, :alg
attr_writer :header
def header
@header ||= {}
end
def content_type
@content_type ||= 'application/jose'
end
end
def with_jwk_support(key)
case key
when JSON::JWK
key.to_key
when JSON::JWK::Set
key[kid]&.to_key or raise JWK::Set::KidNotFound
else
key
end
end
def secure_compare(a, b)
if ActiveSupport::SecurityUtils.respond_to?(:fixed_length_secure_compare)
begin
ActiveSupport::SecurityUtils.fixed_length_secure_compare(a, b)
rescue ArgumentError
false
end
else
ActiveSupport::SecurityUtils.secure_compare(a, b)
end
end
module ClassMethods
def register_header_keys(*keys)
keys.each do |header_key|
define_method header_key do
self.header[header_key]
end
define_method "#{header_key}=" do |value|
self.header[header_key] = value
end
end
end
def decode(input, key_or_secret = nil, algorithms = nil, encryption_methods = nil, allow_blank_payload = false)
if input.is_a? Hash
decode_json_serialized input, key_or_secret, algorithms, encryption_methods, allow_blank_payload
else
decode_compact_serialized input, key_or_secret, algorithms, encryption_methods, allow_blank_payload
end
rescue JSON::ParserError, ArgumentError
raise JWT::InvalidFormat.new("Invalid JSON Format")
end
end
end
end
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