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75 lines
2.3 KiB
75 lines
2.3 KiB
# 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 = original_json = Oj.load(body, mode: :strict) |
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@options = options |
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begin |
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@json = compact(@json) if @json['signature'].is_a?(Hash) |
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rescue JSON::LD::JsonLdError => e |
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Rails.logger.debug "Error when compacting JSON-LD document for #{value_or_id(@json['actor'])}: #{e.message}" |
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@json = original_json.without('signature') |
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end |
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return if !supported_context? || (different_actor? && verify_account!.nil?) || suspended_actor? || @account.local? |
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if @json['signature'].present? |
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# We have verified the signature, but in the compaction step above, might |
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# have introduced incompatibilities with other servers that do not |
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# normalize the JSON-LD documents (for instance, previous Mastodon |
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# versions), so skip redistribution if we can't get a safe document. |
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patch_for_forwarding!(original_json, @json) |
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@json.delete('signature') unless safe_for_forwarding?(original_json, @json) |
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end |
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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 suspended_actor? |
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@account.suspended? && !activity_allowed_while_suspended? |
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end |
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def activity_allowed_while_suspended? |
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%w(Delete Reject Undo Update).include?(@json['type']) |
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end |
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def process_items(items) |
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items.reverse_each.filter_map { |item| process_item(item) } |
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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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