chuckya/app/services/process_interaction_service.rb
Eugen Rochko 05b13c38b5 Re-enable Webfinger for locked accounts but don't handle "follow" events
coming in via Salmon.

Currently no way to prevent remote follows, but they will only receive public
and unlisted posts
2016-12-22 23:17:57 +01:00

122 lines
3.7 KiB
Ruby

# frozen_string_literal: true
class ProcessInteractionService < BaseService
# Record locally the remote interaction with our user
# @param [String] envelope Salmon envelope
# @param [Account] target_account Account the Salmon was addressed to
def call(envelope, target_account)
body = salmon.unpack(envelope)
xml = Nokogiri::XML(body)
xml.encoding = 'utf-8'
return unless contains_author?(xml)
username = xml.at_xpath('/xmlns:entry/xmlns:author/xmlns:name', xmlns: TagManager::XMLNS).content
url = xml.at_xpath('/xmlns:entry/xmlns:author/xmlns:uri', xmlns: TagManager::XMLNS).content
domain = Addressable::URI.parse(url).host
account = Account.find_by(username: username, domain: domain)
return if DomainBlock.blocked?(domain)
if account.nil?
account = follow_remote_account_service.call("#{username}@#{domain}")
end
return if account.suspended?
if salmon.verify(envelope, account.keypair)
update_remote_profile_service.call(xml.at_xpath('/xmlns:entry', xmlns: TagManager::XMLNS), account, true)
case verb(xml)
when :follow
follow!(account, target_account) unless target_account.locked?
when :unfollow
unfollow!(account, target_account)
when :favorite
favourite!(xml, account)
when :post
add_post!(body, account) if mentions_account?(xml, target_account)
when :share
add_post!(body, account) unless status(xml).nil?
when :delete
delete_post!(xml, account)
end
end
rescue Goldfinger::Error, HTTP::Error, OStatus2::BadSalmonError
nil
end
private
def contains_author?(xml)
!(xml.at_xpath('/xmlns:entry/xmlns:author/xmlns:name', xmlns: TagManager::XMLNS).nil? || xml.at_xpath('/xmlns:entry/xmlns:author/xmlns:uri', xmlns: TagManager::XMLNS).nil?)
end
def mentions_account?(xml, account)
xml.xpath('/xmlns:entry/xmlns:link[@rel="mentioned"]', xmlns: TagManager::XMLNS).each { |mention_link| return true if mention_link.attribute('href').value == TagManager.instance.url_for(account) }
false
end
def verb(xml)
raw = xml.at_xpath('//activity:verb', activity: TagManager::AS_XMLNS).content
TagManager::VERBS.key(raw)
rescue
:post
end
def follow!(account, target_account)
follow = account.follow!(target_account)
NotifyService.new.call(target_account, follow)
end
def unfollow!(account, target_account)
account.unfollow!(target_account)
end
def delete_post!(xml, account)
status = Status.find(xml.at_xpath('//xmlns:id', xmlns: TagManager::XMLNS).content)
return if status.nil?
remove_status_service.call(status) if account.id == status.account_id
end
def favourite!(xml, from_account)
current_status = status(xml)
favourite = current_status.favourites.where(account: from_account).first_or_create!(account: from_account)
NotifyService.new.call(current_status.account, favourite)
end
def add_post!(body, account)
process_feed_service.call(body, account)
end
def status(xml)
Status.find(TagManager.instance.unique_tag_to_local_id(activity_id(xml), 'Status'))
end
def activity_id(xml)
xml.at_xpath('//activity:object', activity: TagManager::AS_XMLNS).at_xpath('./xmlns:id', xmlns: TagManager::XMLNS).content
end
def salmon
@salmon ||= OStatus2::Salmon.new
end
def follow_remote_account_service
@follow_remote_account_service ||= FollowRemoteAccountService.new
end
def process_feed_service
@process_feed_service ||= ProcessFeedService.new
end
def update_remote_profile_service
@update_remote_profile_service ||= UpdateRemoteProfileService.new
end
def remove_status_service
@remove_status_service ||= RemoveStatusService.new
end
end