802cf6a4c5
* Fix URI not being sufficiently validated with prefetched JSON * Add additional id validation to OStatus documents, when possible
61 lines
1.6 KiB
Ruby
61 lines
1.6 KiB
Ruby
# frozen_string_literal: true
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class ActivityPub::FetchRemoteKeyService < BaseService
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include JsonLdHelper
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# Returns account that owns the key
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def call(uri, id: true, prefetched_body: nil)
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if prefetched_body.nil?
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if id
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@json = fetch_resource_without_id_validation(uri)
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if person?
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@json = fetch_resource(@json['id'], true)
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elsif uri != @json['id']
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return
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end
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else
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@json = fetch_resource(uri, id)
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end
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else
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@json = body_to_json(prefetched_body, compare_id: id ? uri : nil)
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end
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return unless supported_context?(@json) && expected_type?
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return find_account(@json['id'], @json) if person?
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@owner = fetch_resource(owner_uri, true)
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return unless supported_context?(@owner) && confirmed_owner?
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find_account(owner_uri, @owner)
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end
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private
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def find_account(uri, prefetched_body)
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account = ActivityPub::TagManager.instance.uri_to_resource(uri, Account)
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account ||= ActivityPub::FetchRemoteAccountService.new.call(uri, prefetched_body: prefetched_body)
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account
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end
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def expected_type?
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person? || public_key?
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end
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def person?
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equals_or_includes_any?(@json['type'], ActivityPub::FetchRemoteAccountService::SUPPORTED_TYPES)
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end
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def public_key?
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@json['publicKeyPem'].present? && @json['owner'].present?
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end
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def owner_uri
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@owner_uri ||= value_or_id(@json['owner'])
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end
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def confirmed_owner?
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equals_or_includes_any?(@owner['type'], ActivityPub::FetchRemoteAccountService::SUPPORTED_TYPES) && value_or_id(@owner['publicKey']) == @json['id']
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end
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end
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