Module: BetterAuth::Passkey::Routes::Registration

Defined in:
lib/better_auth/passkey/routes/registration.rb

Class Method Summary collapse

Class Method Details

.generate_passkey_registration_options_endpoint(config) ⇒ Object 



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# File 'lib/better_auth/passkey/routes/registration.rb', line 12

def generate_passkey_registration_options_endpoint(config)
  Endpoint.new(path: "/passkey/generate-register-options", method: "GET") do |ctx|
    query = Utils.normalize_hash(ctx.query)
    Utils.validate_authenticator_attachment!(query[:authenticator_attachment])
    user = Utils.resolve_registration_user(config, ctx, query)
    relying_party = Utils.relying_party(config, ctx)
    existing = ctx.context.adapter.find_many(model: "passkey", where: [{field: "userId", value: user.fetch("id")}])
    options = WebAuthn::Credential.options_for_create(
      user: {
        id: Crypto.random_string(32).downcase,
        name: query[:name].to_s.empty? ? (user["email"] || user["name"] || user["id"]) : query[:name].to_s,
        display_name: user["displayName"] || user["display_name"] || user["email"] || user["name"] || user["id"]
      },
      exclude: existing.map { |passkey| Credentials.credential_id(passkey) },
      authenticator_selection: Utils.authenticator_selection(config, query),
      extensions: Utils.resolve_extensions(config.dig(:registration, :extensions), ctx),
      relying_party: relying_party
    )
    Challenges.store_challenge(ctx, config, options.challenge, {
      id: user.fetch("id"),
      name: user["name"] || user["email"] || user["id"],
      displayName: user["displayName"] || user["display_name"]
    }.compact)
    payload = options.as_json.merge(attestation: "none", excludeCredentials: existing.map { |passkey| Credentials.credential_descriptor(passkey, kind: :exclude) })
    payload.delete(:extensions) if payload[:extensions].nil? || payload[:extensions] == {}
    payload.delete("extensions") if payload["extensions"].nil? || payload["extensions"] == {}
    ctx.json(payload)
  end
end

.verify_passkey_registration_endpoint(config) ⇒ Object 



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# File 'lib/better_auth/passkey/routes/registration.rb', line 42

def verify_passkey_registration_endpoint(config)
  Endpoint.new(path: "/passkey/verify-registration", method: "POST") do |ctx|
    body = Utils.normalize_hash(ctx.body)
    Utils.require_key!(body, :response)
    require_session = config.dig(:registration, :require_session) != false
    session = require_session ? BetterAuth::Routes.current_session(ctx, sensitive: true) : BetterAuth::Routes.current_session(ctx, allow_nil: true)
    origin = Utils.origin(config, ctx)
    raise APIError.new("BAD_REQUEST", message: ErrorCodes::PASSKEY_ERROR_CODES.fetch("FAILED_TO_VERIFY_REGISTRATION")) if origin.to_s.empty?

    verification_token = Challenges.challenge_token(ctx, config)
    raise APIError.new("BAD_REQUEST", message: ErrorCodes::PASSKEY_ERROR_CODES.fetch("CHALLENGE_NOT_FOUND")) unless verification_token

    challenge = Challenges.find_challenge(ctx, verification_token)
    unless challenge
      raise APIError.new("BAD_REQUEST", message: ErrorCodes::PASSKEY_ERROR_CODES.fetch("CHALLENGE_NOT_FOUND"))
    end
    if session && challenge.fetch("userData").fetch("id") != session.fetch(:user).fetch("id")
      raise APIError.new("UNAUTHORIZED", message: ErrorCodes::PASSKEY_ERROR_CODES.fetch("YOU_ARE_NOT_ALLOWED_TO_REGISTER_THIS_PASSKEY"))
    end

    response = Credentials.webauthn_response(body[:response])
    relying_party = Utils.relying_party(config, ctx, origin: origin)
    credential = WebAuthn::Credential.from_create(response, relying_party: relying_party)
    credential.verify(challenge.fetch("expectedChallenge"), user_verification: false)
    authenticator_data = Credentials.authenticator_data(credential)
    target_user_id = Utils.after_registration_verification_user_id(config, ctx, credential, challenge, response, session)
    data = ctx.context.adapter.create(
      model: "passkey",
      data: {
        name: body[:name],
        userId: target_user_id,
        credentialID: credential.id,
        publicKey: Base64.strict_encode64(credential.public_key),
        counter: credential.sign_count,
        deviceType: authenticator_data&.credential_backup_eligible? ? "multiDevice" : "singleDevice",
        backedUp: authenticator_data&.credential_backed_up? || false,
        transports: Array(Credentials.attestation_response(credential)&.transports).join(","),
        createdAt: Time.now,
        aaguid: Credentials.attestation_response(credential)&.aaguid
      }
    )
    ctx.context.internal_adapter.delete_verification_by_identifier(verification_token)
    ctx.json(Credentials.wire(data))
  rescue WebAuthn::Error => error
    ctx.context.logger&.error("Failed to verify registration", error)
    raise APIError.new("INTERNAL_SERVER_ERROR", message: ErrorCodes::PASSKEY_ERROR_CODES.fetch("FAILED_TO_VERIFY_REGISTRATION"))
  end
end