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# frozen_string_literal: true
class Pubsubhubbub::DeliveryWorker
include Sidekiq::Worker
include RoutingHelper
sidekiq_options queue: 'push', retry: 3, dead: false
sidekiq_retry_in do |count|
5 * (count + 1)
end
def perform(subscription_id, payload)
subscription = Subscription.find(subscription_id)
headers = {}
host = Addressable::URI.parse(subscription.callback_url).normalize.host
return if DomainBlock.blocked?(host)
headers['User-Agent'] = 'Mastodon/PubSubHubbub'
headers['Link'] = LinkHeader.new([[api_push_url, [%w(rel hub)]], [account_url(subscription.account, format: :atom), [%w(rel self)]]]).to_s
headers['X-Hub-Signature'] = signature(subscription.secret, payload) if subscription.secret?
response = HTTP.timeout(:per_operation, write: 50, connect: 20, read: 50)
.headers(headers)
.post(subscription.callback_url, body: payload)
return subscription.destroy! if response_failed_permanently?(response) # HTTP 4xx means error is not temporary, except for 429 (throttling)
raise "Delivery failed for #{subscription.callback_url}: HTTP #{response.code}" unless response_successful?(response)
subscription.touch(:last_successful_delivery_at)
end
private
def signature(secret, payload)
hmac = OpenSSL::HMAC.hexdigest(OpenSSL::Digest.new('sha1'), secret, payload)
"sha1=#{hmac}"
end
def response_failed_permanently?(response)
response.code > 299 && response.code < 500 && response.code != 429
end
def response_successful?(response)
response.code > 199 && response.code < 300
end
end