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Nginx can be configured to bypass proxy cache when a special header is in the request. If the response is cacheable, it will replace the cache for that request. Proxy caching of media files is desirable when using object storage as a way of minimizing bandwidth costs, but has the drawback of leaving deleted media files for a configured amount of cache time. A cache buster can make those media files immediately unavailable. This especially makes sense when suspending and unsuspending an account.
88 lines
2.8 KiB
Ruby
88 lines
2.8 KiB
Ruby
# frozen_string_literal: true
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class SuspendAccountService < BaseService
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include Payloadable
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def call(account)
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@account = account
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suspend!
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reject_remote_follows!
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distribute_update_actor!
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unmerge_from_home_timelines!
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unmerge_from_list_timelines!
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privatize_media_attachments!
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end
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private
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def suspend!
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@account.suspend! unless @account.suspended?
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end
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def reject_remote_follows!
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return if @account.local? || !@account.activitypub?
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# When suspending a remote account, the account obviously doesn't
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# actually become suspended on its origin server, i.e. unlike a
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# locally suspended account it continues to have access to its home
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# feed and other content. To prevent it from being able to continue
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# to access toots it would receive because it follows local accounts,
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# we have to force it to unfollow them. Unfortunately, there is no
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# counterpart to this operation, i.e. you can't then force a remote
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# account to re-follow you, so this part is not reversible.
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follows = Follow.where(account: @account).to_a
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ActivityPub::DeliveryWorker.push_bulk(follows) do |follow|
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[Oj.dump(serialize_payload(follow, ActivityPub::RejectFollowSerializer)), follow.target_account_id, @account.inbox_url]
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end
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follows.each(&:destroy)
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end
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def distribute_update_actor!
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ActivityPub::UpdateDistributionWorker.perform_async(@account.id) if @account.local?
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end
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def unmerge_from_home_timelines!
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@account.followers_for_local_distribution.find_each do |follower|
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FeedManager.instance.unmerge_from_home(@account, follower)
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end
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end
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def unmerge_from_list_timelines!
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@account.lists_for_local_distribution.find_each do |list|
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FeedManager.instance.unmerge_from_list(@account, list)
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end
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end
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def privatize_media_attachments!
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attachment_names = MediaAttachment.attachment_definitions.keys
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@account.media_attachments.find_each do |media_attachment|
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attachment_names.each do |attachment_name|
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attachment = media_attachment.public_send(attachment_name)
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styles = [:original] | attachment.styles.keys
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styles.each do |style|
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case Paperclip::Attachment.default_options[:storage]
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when :s3
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attachment.s3_object(style).acl.put(acl: 'private')
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when :fog
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# Not supported
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when :filesystem
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begin
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FileUtils.chmod(0o600 & ~File.umask, attachment.path(style)) unless attachment.path(style).nil?
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rescue Errno::ENOENT
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Rails.logger.warn "Tried to change permission on non-existent file #{attachment.path(style)}"
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end
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end
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CacheBusterWorker.perform_async(attachment.path(style)) if Rails.configuration.x.cache_buster_enabled
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end
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end
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end
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end
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end
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