From 682507bc3c954239c11934faddcd3ba2934a4d4d Mon Sep 17 00:00:00 2001 From: Matt Jankowski Date: Tue, 9 May 2017 14:48:30 -0400 Subject: [PATCH] Specs for pubsub subscribe service (#2951) * Add spec for pubsubhubbub/subscribe * Refactor pubsubhubbub/subscribe service --- .../pubsubhubbub/subscribe_service.rb | 57 +++++++++++++-- .../pubsubhubbub/subscribe_service_spec.rb | 71 +++++++++++++++++++ 2 files changed, 123 insertions(+), 5 deletions(-) create mode 100644 spec/services/pubsubhubbub/subscribe_service_spec.rb diff --git a/app/services/pubsubhubbub/subscribe_service.rb b/app/services/pubsubhubbub/subscribe_service.rb index 3642b4ec..67d7f659 100644 --- a/app/services/pubsubhubbub/subscribe_service.rb +++ b/app/services/pubsubhubbub/subscribe_service.rb @@ -1,14 +1,61 @@ # frozen_string_literal: true class Pubsubhubbub::SubscribeService < BaseService + URL_PATTERN = /\A#{URI.regexp(%w(http https))}\z/ + + attr_reader :account, :callback, :secret, :lease_seconds + def call(account, callback, secret, lease_seconds) - return ['Invalid topic URL', 422] if account.nil? - return ['Invalid callback URL', 422] unless !callback.blank? && callback =~ /\A#{URI.regexp(%w(http https))}\z/ - return ['Callback URL not allowed', 403] if DomainBlock.blocked?(Addressable::URI.parse(callback).normalize.host) + @account = account + @callback = callback + @secret = secret + @lease_seconds = lease_seconds - subscription = Subscription.where(account: account, callback_url: callback).first_or_create!(account: account, callback_url: callback) + process_subscribe + end + + private + + def process_subscribe + case subscribe_status + when :invalid_topic + ['Invalid topic URL', 422] + when :invalid_callback + ['Invalid callback URL', 422] + when :callback_not_allowed + ['Callback URL not allowed', 403] + when :valid + confirm_subscription + ['', 202] + end + end + + def subscribe_status + if account.nil? + :invalid_topic + elsif !valid_callback? + :invalid_callback + elsif blocked_domain? + :callback_not_allowed + else + :valid + end + end + + def confirm_subscription + subscription = locate_subscription Pubsubhubbub::ConfirmationWorker.perform_async(subscription.id, 'subscribe', secret, lease_seconds) + end - ['', 202] + def valid_callback? + callback.present? && callback =~ URL_PATTERN + end + + def blocked_domain? + DomainBlock.blocked? Addressable::URI.parse(callback).normalize.host + end + + def locate_subscription + Subscription.where(account: account, callback_url: callback).first_or_create!(account: account, callback_url: callback) end end diff --git a/spec/services/pubsubhubbub/subscribe_service_spec.rb b/spec/services/pubsubhubbub/subscribe_service_spec.rb new file mode 100644 index 00000000..82094117 --- /dev/null +++ b/spec/services/pubsubhubbub/subscribe_service_spec.rb @@ -0,0 +1,71 @@ +# frozen_string_literal: true + +require 'rails_helper' + +describe Pubsubhubbub::SubscribeService do + describe '#call' do + subject { described_class.new } + let(:user_account) { Fabricate(:account) } + + context 'with a nil account' do + it 'returns the invalid topic status results' do + result = service_call(account: nil) + + expect(result).to eq invalid_topic_status + end + end + + context 'with an invalid callback url' do + it 'returns invalid callback status when callback is blank' do + result = service_call(callback: '') + + expect(result).to eq invalid_callback_status + end + it 'returns invalid callback status when callback is not a URI' do + result = service_call(callback: 'invalid-hostname') + + expect(result).to eq invalid_callback_status + end + end + + context 'with a blocked domain in the callback' do + it 'returns callback not allowed' do + Fabricate(:domain_block, domain: 'test.host', severity: :suspend) + result = service_call(callback: 'https://test.host/api') + + expect(result).to eq not_allowed_callback_status + end + end + + context 'with a valid account and callback' do + it 'returns success status and confirms subscription' do + allow(Pubsubhubbub::ConfirmationWorker).to receive(:perform_async).and_return(nil) + subscription = Fabricate(:subscription, account: user_account) + + result = service_call(callback: subscription.callback_url) + expect(result).to eq success_status + expect(Pubsubhubbub::ConfirmationWorker).to have_received(:perform_async).with(subscription.id, 'subscribe', 'asdf', 3600) + end + end + end + + def service_call(account: user_account, callback: 'https://callback.host', secret: 'asdf', lease_seconds: 3600) + subject.call(account, callback, secret, lease_seconds) + end + + def invalid_topic_status + ['Invalid topic URL', 422] + end + + def invalid_callback_status + ['Invalid callback URL', 422] + end + + def not_allowed_callback_status + ['Callback URL not allowed', 403] + end + + def success_status + ['', 202] + end +end