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95 lines
3.5 KiB
95 lines
3.5 KiB
# frozen_string_literal: true
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class ProcessMentionsService < BaseService
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include Payloadable
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# Scan status for mentions and fetch remote mentioned users,
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# and create local mention pointers
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# @param [Status] status
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# @param [Boolean] save_records Whether to save records in database
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def call(status, save_records: true)
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@status = status
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@save_records = save_records
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return unless @status.local?
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@previous_mentions = @status.active_mentions.includes(:account).to_a
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@current_mentions = []
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Status.transaction do
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scan_text!
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assign_mentions!
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end
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end
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private
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def scan_text!
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@status.text = @status.text.gsub(Account::MENTION_RE) do |match|
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username, domain = Regexp.last_match(1).split('@')
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domain = if TagManager.instance.local_domain?(domain)
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nil
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else
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TagManager.instance.normalize_domain(domain)
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end
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mentioned_account = Account.find_remote(username, domain)
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# Unapproved and unconfirmed accounts should not be mentionable
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next match if mentioned_account&.local? && !(mentioned_account.user_confirmed? && mentioned_account.user_approved?)
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# If the account cannot be found or isn't the right protocol,
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# first try to resolve it
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if mention_undeliverable?(mentioned_account)
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begin
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mentioned_account = ResolveAccountService.new.call(Regexp.last_match(1))
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rescue Webfinger::Error, HTTP::Error, OpenSSL::SSL::SSLError, Mastodon::UnexpectedResponseError
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mentioned_account = nil
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end
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end
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# If after resolving it still isn't found or isn't the right
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# protocol, then give up
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next match if mention_undeliverable?(mentioned_account) || mentioned_account&.suspended?
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mention = @previous_mentions.find { |x| x.account_id == mentioned_account.id }
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mention ||= @current_mentions.find { |x| x.account_id == mentioned_account.id }
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mention ||= @status.mentions.new(account: mentioned_account)
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@current_mentions << mention
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"@#{mentioned_account.acct}"
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end
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@status.save! if @save_records
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end
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def assign_mentions!
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# Make sure we never mention blocked accounts
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unless @current_mentions.empty?
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mentioned_domains = @current_mentions.map { |m| m.account.domain }.compact.uniq
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blocked_domains = Set.new(mentioned_domains.empty? ? [] : AccountDomainBlock.where(account_id: @status.account_id, domain: mentioned_domains))
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mentioned_account_ids = @current_mentions.map(&:account_id)
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blocked_account_ids = Set.new(@status.account.block_relationships.where(target_account_id: mentioned_account_ids).pluck(:target_account_id))
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dropped_mentions, @current_mentions = @current_mentions.partition { |mention| blocked_account_ids.include?(mention.account_id) || blocked_domains.include?(mention.account.domain) }
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dropped_mentions.each(&:destroy)
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end
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@current_mentions.each do |mention|
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mention.save if mention.new_record? && @save_records
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end
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# If previous mentions are no longer contained in the text, convert them
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# to silent mentions, since withdrawing access from someone who already
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# received a notification might be more confusing
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removed_mentions = @previous_mentions - @current_mentions
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Mention.where(id: removed_mentions.map(&:id)).update_all(silent: true) unless removed_mentions.empty?
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end
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def mention_undeliverable?(mentioned_account)
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mentioned_account.nil? || (!mentioned_account.local? && !mentioned_account.activitypub?)
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end
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end
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