2017-08-08 15:52:15 -04:00
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# frozen_string_literal: true
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class ActivityPub::FetchRemoteStatusService < BaseService
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include JsonLdHelper
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# Should be called when uri has already been checked for locality
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2017-10-03 19:13:48 -04:00
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def call(uri, id: true, prefetched_body: nil)
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@json = if prefetched_body.nil?
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fetch_resource(uri, id)
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else
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body_to_json(prefetched_body)
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end
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2017-08-08 15:52:15 -04:00
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2017-10-08 16:03:34 -04:00
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return unless supported_context? && expected_type?
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2017-08-08 15:52:15 -04:00
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2017-10-03 19:13:48 -04:00
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return if actor_id.nil? || !trustworthy_attribution?(@json['id'], actor_id)
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2017-08-08 15:52:15 -04:00
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2017-08-24 10:21:42 -04:00
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actor = ActivityPub::TagManager.instance.uri_to_resource(actor_id, Account)
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2017-10-29 11:24:16 -04:00
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actor = ActivityPub::FetchRemoteAccountService.new.call(actor_id, id: true) if actor.nil? || needs_update(actor)
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2017-08-08 15:52:15 -04:00
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2017-11-19 09:33:15 -05:00
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return if actor.nil? || actor.suspended?
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2017-09-13 05:05:02 -04:00
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2017-10-03 19:13:48 -04:00
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ActivityPub::Activity.factory(activity_json, actor).perform
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2017-08-08 15:52:15 -04:00
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end
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private
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2017-08-24 10:21:42 -04:00
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def activity_json
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2017-10-03 19:13:48 -04:00
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{ 'type' => 'Create', 'actor' => actor_id, 'object' => @json }
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end
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def actor_id
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2018-01-15 00:51:46 -05:00
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value_or_id(first_of_value(@json['attributedTo']))
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2017-08-24 10:21:42 -04:00
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end
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2017-08-08 15:52:15 -04:00
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def trustworthy_attribution?(uri, attributed_to)
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2018-05-05 12:22:34 -04:00
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return false if uri.nil? || attributed_to.nil?
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2017-08-08 15:52:15 -04:00
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Addressable::URI.parse(uri).normalized_host.casecmp(Addressable::URI.parse(attributed_to).normalized_host).zero?
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end
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def supported_context?
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super(@json)
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end
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2017-10-03 19:13:48 -04:00
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def expected_type?
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2018-05-02 06:40:24 -04:00
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equals_or_includes_any?(@json['type'], ActivityPub::Activity::Create::SUPPORTED_TYPES + ActivityPub::Activity::Create::CONVERTED_TYPES)
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2017-08-08 15:52:15 -04:00
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end
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2017-10-29 11:24:16 -04:00
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def needs_update(actor)
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actor.possibly_stale?
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end
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2017-08-08 15:52:15 -04:00
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end
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