52 lines
		
	
	
		
			1.3 KiB
		
	
	
	
		
			Ruby
		
	
	
	
			
		
		
	
	
			52 lines
		
	
	
		
			1.3 KiB
		
	
	
	
		
			Ruby
		
	
	
	
# frozen_string_literal: true
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class ActivityPub::ProcessCollectionService < BaseService
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  include JsonLdHelper
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  def call(body, account, **options)
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    @account = account
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    @json    = Oj.load(body, mode: :strict)
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    @options = options
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    return if !supported_context? || (different_actor? && verify_account!.nil?) || @account.suspended? || @account.local?
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    case @json['type']
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    when 'Collection', 'CollectionPage'
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      process_items @json['items']
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    when 'OrderedCollection', 'OrderedCollectionPage'
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      process_items @json['orderedItems']
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    else
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      process_items [@json]
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    end
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  rescue Oj::ParseError
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    nil
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  end
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  private
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  def different_actor?
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    @json['actor'].present? && value_or_id(@json['actor']) != @account.uri
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  end
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  def process_items(items)
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    items.reverse_each.map { |item| process_item(item) }.compact
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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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  def process_item(item)
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    activity = ActivityPub::Activity.factory(item, @account, @options)
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    activity&.perform
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  end
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  def verify_account!
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    @options[:relayed_through_account] = @account
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    @account = ActivityPub::LinkedDataSignature.new(@json).verify_account!
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  rescue JSON::LD::JsonLdError => e
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    Rails.logger.debug "Could not verify LD-Signature for #{value_or_id(@json['actor'])}: #{e.message}"
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    nil
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  end
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end
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