forked from fedi/mastodon
00840f4f2e
* Add handling of Linked Data Signatures in payloads * Add a way to sign JSON, fix canonicalization of signature options * Fix signatureValue encoding, send out signed JSON when distributing * Add missing security context
77 lines
2.7 KiB
Ruby
77 lines
2.7 KiB
Ruby
# frozen_string_literal: true
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class FollowService < BaseService
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include StreamEntryRenderer
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# Follow a remote user, notify remote user about the follow
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# @param [Account] source_account From which to follow
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# @param [String] uri User URI to follow in the form of username@domain
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def call(source_account, uri)
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target_account = ResolveRemoteAccountService.new.call(uri)
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raise ActiveRecord::RecordNotFound if target_account.nil? || target_account.id == source_account.id || target_account.suspended?
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raise Mastodon::NotPermittedError if target_account.blocking?(source_account) || source_account.blocking?(target_account)
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return if source_account.following?(target_account)
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if target_account.locked? || target_account.activitypub?
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request_follow(source_account, target_account)
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else
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direct_follow(source_account, target_account)
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end
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end
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private
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def request_follow(source_account, target_account)
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follow_request = FollowRequest.create!(account: source_account, target_account: target_account)
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if target_account.local?
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NotifyService.new.call(target_account, follow_request)
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elsif target_account.ostatus?
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NotificationWorker.perform_async(build_follow_request_xml(follow_request), source_account.id, target_account.id)
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AfterRemoteFollowRequestWorker.perform_async(follow_request.id)
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elsif target_account.activitypub?
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ActivityPub::DeliveryWorker.perform_async(build_json(follow_request), source_account.id, target_account.inbox_url)
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end
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follow_request
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end
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def direct_follow(source_account, target_account)
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follow = source_account.follow!(target_account)
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if target_account.local?
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NotifyService.new.call(target_account, follow)
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else
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Pubsubhubbub::SubscribeWorker.perform_async(target_account.id) unless target_account.subscribed?
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NotificationWorker.perform_async(build_follow_xml(follow), source_account.id, target_account.id)
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AfterRemoteFollowWorker.perform_async(follow.id)
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end
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MergeWorker.perform_async(target_account.id, source_account.id)
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follow
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end
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def redis
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Redis.current
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end
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def build_follow_request_xml(follow_request)
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OStatus::AtomSerializer.render(OStatus::AtomSerializer.new.follow_request_salmon(follow_request))
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end
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def build_follow_xml(follow)
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OStatus::AtomSerializer.render(OStatus::AtomSerializer.new.follow_salmon(follow))
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end
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def build_json(follow_request)
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Oj.dump(ActivityPub::LinkedDataSignature.new(ActiveModelSerializers::SerializableResource.new(
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follow_request,
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serializer: ActivityPub::FollowSerializer,
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adapter: ActivityPub::Adapter
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).as_json).sign!(follow_request.account))
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end
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end
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