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# frozen_string_literal: true
require "json"
require "openssl"
require "webauthn/encoder"
require "webauthn/error"
module WebAuthn
class ClientDataMissingError < Error; end
class ClientData
VALID_TOKEN_BINDING_STATUSES = ["present", "supported", "not-supported"].freeze
def initialize(client_data_json)
@client_data_json = client_data_json
end
def type
data["type"]
end
def challenge
WebAuthn.standard_encoder.decode(data["challenge"])
end
def origin
data["origin"]
end
def token_binding
data["tokenBinding"]
end
def valid_token_binding_format?
if token_binding
token_binding.is_a?(Hash) && VALID_TOKEN_BINDING_STATUSES.include?(token_binding["status"])
else
true
end
end
def hash
OpenSSL::Digest::SHA256.digest(client_data_json)
end
private
attr_reader :client_data_json
def data
@data ||=
begin
if client_data_json
JSON.parse(client_data_json)
else
raise ClientDataMissingError, "Client Data JSON is missing"
end
end
end
end
end
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