tootlab-mastodon/app/workers/pubsubhubbub/confirmation_worker.rb
Eugen Rochko 1618b68bfa HTTP signatures (#4146)
* Add Request class with HTTP signature generator

Spec: https://tools.ietf.org/html/draft-cavage-http-signatures-06

* Add HTTP signature verification concern

* Add test for SignatureVerification concern

* Add basic test for Request class

* Make PuSH subscribe/unsubscribe requests use new Request class

Accidentally fix lease_seconds not being set and sent properly, and
change the new minimum subscription duration to 1 day

* Make all PuSH workers use new Request class

* Make Salmon sender use new Request class

* Make FetchLinkService use new Request class

* Make FetchAtomService use the new Request class

* Make Remotable use the new Request class

* Make ResolveRemoteAccountService use the new Request class

* Add more tests

* Allow +-30 seconds window for signed request to remain valid

* Disable time window validation for signed requests, restore 7 days
as PuSH subscription duration (which was previous default due to a bug)
2017-07-14 20:41:49 +02:00

89 lines
1.9 KiB
Ruby

# frozen_string_literal: true
class Pubsubhubbub::ConfirmationWorker
include Sidekiq::Worker
include RoutingHelper
sidekiq_options queue: 'push', retry: false
attr_reader :subscription, :mode, :secret, :lease_seconds
def perform(subscription_id, mode, secret = nil, lease_seconds = nil)
@subscription = Subscription.find(subscription_id)
@mode = mode
@secret = secret
@lease_seconds = lease_seconds
process_confirmation
end
private
def process_confirmation
prepare_subscription
confirm_callback
logger.debug "Confirming PuSH subscription for #{subscription.callback_url} with challenge #{challenge}: #{callback_response_body}"
update_subscription
end
def update_subscription
if successful_subscribe?
subscription.save!
elsif successful_unsubscribe?
subscription.destroy!
end
end
def successful_subscribe?
subscribing? && response_matches_challenge?
end
def successful_unsubscribe?
(unsubscribing? && response_matches_challenge?) || !subscription.confirmed?
end
def response_matches_challenge?
callback_response_body == challenge
end
def subscribing?
mode == 'subscribe'
end
def unsubscribing?
mode == 'unsubscribe'
end
def confirm_callback
@_confirm_callback ||= callback_get_with_params
end
def callback_get_with_params
Request.new(:get, subscription.callback_url, params: callback_params).perform
end
def callback_response_body
confirm_callback.body.to_s
end
def callback_params
{
'hub.topic': account_url(subscription.account, format: :atom),
'hub.mode': mode,
'hub.challenge': challenge,
'hub.lease_seconds': subscription.lease_seconds,
}
end
def prepare_subscription
subscription.secret = secret
subscription.lease_seconds = lease_seconds
subscription.confirmed = true
end
def challenge
@_challenge ||= SecureRandom.hex
end
end