File: attestation_statement.rb

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# frozen_string_literal: true

require "webauthn/attestation_statement/android_key"
require "webauthn/attestation_statement/android_safetynet"
require "webauthn/attestation_statement/apple"
require "webauthn/attestation_statement/fido_u2f"
require "webauthn/attestation_statement/none"
require "webauthn/attestation_statement/packed"
require "webauthn/attestation_statement/tpm"
require "webauthn/error"

module WebAuthn
  module AttestationStatement
    class FormatNotSupportedError < Error; end

    ATTESTATION_FORMAT_NONE = "none"
    ATTESTATION_FORMAT_FIDO_U2F = "fido-u2f"
    ATTESTATION_FORMAT_PACKED = 'packed'
    ATTESTATION_FORMAT_ANDROID_SAFETYNET = "android-safetynet"
    ATTESTATION_FORMAT_ANDROID_KEY = "android-key"
    ATTESTATION_FORMAT_TPM = "tpm"
    ATTESTATION_FORMAT_APPLE = "apple"

    FORMAT_TO_CLASS = {
      ATTESTATION_FORMAT_NONE => WebAuthn::AttestationStatement::None,
      ATTESTATION_FORMAT_FIDO_U2F => WebAuthn::AttestationStatement::FidoU2f,
      ATTESTATION_FORMAT_PACKED => WebAuthn::AttestationStatement::Packed,
      ATTESTATION_FORMAT_ANDROID_SAFETYNET => WebAuthn::AttestationStatement::AndroidSafetynet,
      ATTESTATION_FORMAT_ANDROID_KEY => WebAuthn::AttestationStatement::AndroidKey,
      ATTESTATION_FORMAT_TPM => WebAuthn::AttestationStatement::TPM,
      ATTESTATION_FORMAT_APPLE => WebAuthn::AttestationStatement::Apple
    }.freeze

    def self.from(format, statement)
      klass = FORMAT_TO_CLASS[format]

      if klass
        klass.new(statement)
      else
        raise(FormatNotSupportedError, "Unsupported attestation format '#{format}'")
      end
    end
  end
end