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# frozen_string_literal: true ## # The WebauthnPoller class retrieves an OTP after a user successfully WebAuthns. An instance # polls the Gem host for the OTP code. The polling request (api/v1/webauthn_verification/<webauthn_token>/status.json) # is sent to the Gem host every 5 seconds and will timeout after 5 minutes. If the status field in the json response # is "success", the code field will contain the OTP code. # # Example usage: # # thread = Gem::WebauthnPoller.poll_thread( # {}, # "RubyGems.org", # "https://rubygems.org/api/v1/webauthn_verification/odow34b93t6aPCdY", # { email: "email@example.com", password: "password" } # ) # thread.join # otp = thread[:otp] # error = thread[:error] # module Gem::GemcutterUtilities class WebauthnPoller include Gem::GemcutterUtilities TIMEOUT_IN_SECONDS = 300 attr_reader :options, :host def initialize(options, host) @options = options @host = host end def self.poll_thread(options, host, webauthn_url, credentials) Thread.new do thread = Thread.current thread.abort_on_exception = true thread.report_on_exception = false thread[:otp] = new(options, host).poll_for_otp(webauthn_url, credentials) rescue Gem::WebauthnVerificationError, Gem::Timeout::Error => e thread[:error] = e end end def poll_for_otp(webauthn_url, credentials) Gem::Timeout.timeout(TIMEOUT_IN_SECONDS) do loop do response = webauthn_verification_poll_response(webauthn_url, credentials) raise Gem::WebauthnVerificationError, response.message unless response.is_a?(Gem::Net::HTTPSuccess) require "json" parsed_response = JSON.parse(response.body) case parsed_response["status"] when "pending" sleep 5 when "success" return parsed_response["code"] else raise Gem::WebauthnVerificationError, parsed_response.fetch("message", "Invalid response from server") end end end end private def webauthn_verification_poll_response(webauthn_url, credentials) webauthn_token = %r{(?<=\/)[^\/]+(?=$)}.match(webauthn_url)[0] rubygems_api_request(:get, "api/v1/webauthn_verification/#{webauthn_token}/status.json") do \|request\| if credentials.empty? request.add_field "Authorization", api_key elsif credentials[:identifier] && credentials[:password] request.basic_auth credentials[:identifier], credentials[:password] else raise Gem::WebauthnVerificationError, "Provided missing credentials" end end end end end