From 75b1488cf4dfe54260deff8df20e5e9b9fd90aea Mon Sep 17 00:00:00 2001 From: ThibG Date: Fri, 18 Jan 2019 15:56:55 +0100 Subject: [PATCH] Add tombstones for remote statuses (#9830) * Add Tombstone model to remember object deletion * Do not recreate a status if it has been deleted * Record Tombstone for remote deleted items Also, only record deleted items from same-host actors * Clear an user's tombstones when their key change --- app/lib/activitypub/activity/create.rb | 1 + app/lib/activitypub/activity/delete.rb | 14 ++++++++++++-- app/models/tombstone.rb | 15 +++++++++++++++ .../activitypub/process_account_service.rb | 6 ++++++ db/migrate/20190117114553_create_tombstones.rb | 12 ++++++++++++ db/schema.rb | 12 +++++++++++- 6 files changed, 57 insertions(+), 3 deletions(-) create mode 100644 app/models/tombstone.rb create mode 100644 db/migrate/20190117114553_create_tombstones.rb diff --git a/app/lib/activitypub/activity/create.rb b/app/lib/activitypub/activity/create.rb index 665a9fbdcbf..b49657d4b14 100644 --- a/app/lib/activitypub/activity/create.rb +++ b/app/lib/activitypub/activity/create.rb @@ -6,6 +6,7 @@ class ActivityPub::Activity::Create < ActivityPub::Activity def perform return if unsupported_object_type? || invalid_origin?(@object['id']) + return if Tombstone.exists?(uri: @object['id']) RedisLock.acquire(lock_options) do |lock| if lock.acquired? diff --git a/app/lib/activitypub/activity/delete.rb b/app/lib/activitypub/activity/delete.rb index ca3cf387e23..dc76dd3e222 100644 --- a/app/lib/activitypub/activity/delete.rb +++ b/app/lib/activitypub/activity/delete.rb @@ -21,8 +21,9 @@ class ActivityPub::Activity::Delete < ActivityPub::Activity def delete_note return if object_uri.nil? - RedisLock.acquire(lock_options) do |_lock| - delete_later!(object_uri) + unless invalid_origin?(object_uri) + RedisLock.acquire(lock_options) { |_lock| delete_later!(object_uri) } + Tombstone.find_or_create_by(uri: object_uri, account: @account) end @status = Status.find_by(uri: object_uri, account: @account) @@ -74,4 +75,13 @@ class ActivityPub::Activity::Delete < ActivityPub::Activity def lock_options { redis: Redis.current, key: "create:#{object_uri}" } end + + def invalid_origin?(url) + return true if unsupported_uri_scheme?(url) + + needle = Addressable::URI.parse(url).host + haystack = Addressable::URI.parse(@account.uri).host + + !haystack.casecmp(needle).zero? + end end diff --git a/app/models/tombstone.rb b/app/models/tombstone.rb new file mode 100644 index 00000000000..35b7337ff95 --- /dev/null +++ b/app/models/tombstone.rb @@ -0,0 +1,15 @@ +# frozen_string_literal: true + +# == Schema Information +# +# Table name: tombstones +# +# id :bigint(8) not null, primary key +# account_id :bigint(8) +# uri :string not null +# created_at :datetime not null +# updated_at :datetime not null +# + +class Tombstone < ApplicationRecord +end diff --git a/app/services/activitypub/process_account_service.rb b/app/services/activitypub/process_account_service.rb index d6c791b449f..487456f3afc 100644 --- a/app/services/activitypub/process_account_service.rb +++ b/app/services/activitypub/process_account_service.rb @@ -33,6 +33,8 @@ class ActivityPub::ProcessAccountService < BaseService after_protocol_change! if protocol_changed? after_key_change! if key_changed? && !@options[:signed_with_known_key] + clear_tombstones! if key_changed? + unless @options[:only_key] check_featured_collection! if @account.featured_collection_url.present? check_links! unless @account.fields.empty? @@ -209,6 +211,10 @@ class ActivityPub::ProcessAccountService < BaseService !@old_public_key.nil? && @old_public_key != @account.public_key end + def clear_tombstones! + Tombstone.delete_all(account_id: @account.id) + end + def protocol_changed? !@old_protocol.nil? && @old_protocol != @account.protocol end diff --git a/db/migrate/20190117114553_create_tombstones.rb b/db/migrate/20190117114553_create_tombstones.rb new file mode 100644 index 00000000000..06d6d8c5ad0 --- /dev/null +++ b/db/migrate/20190117114553_create_tombstones.rb @@ -0,0 +1,12 @@ +class CreateTombstones < ActiveRecord::Migration[5.2] + def change + create_table :tombstones do |t| + t.belongs_to :account, foreign_key: { on_delete: :cascade } + t.string :uri, null: false + + t.timestamps + end + + add_index :tombstones, :uri + end +end diff --git a/db/schema.rb b/db/schema.rb index 9380362e172..3487adf0885 100644 --- a/db/schema.rb +++ b/db/schema.rb @@ -10,7 +10,7 @@ # # It's strongly recommended that you check this file into your version control system. -ActiveRecord::Schema.define(version: 2019_01_03_124754) do +ActiveRecord::Schema.define(version: 2019_01_17_114553) do # These are extensions that must be enabled in order to support this database enable_extension "plpgsql" @@ -615,6 +615,15 @@ ActiveRecord::Schema.define(version: 2019_01_03_124754) do t.index ["name"], name: "index_tags_on_name", unique: true end + create_table "tombstones", force: :cascade do |t| + t.bigint "account_id" + t.string "uri", null: false + t.datetime "created_at", null: false + t.datetime "updated_at", null: false + t.index ["account_id"], name: "index_tombstones_on_account_id" + t.index ["uri"], name: "index_tombstones_on_uri" + end + create_table "users", force: :cascade do |t| t.string "email", default: "", null: false t.datetime "created_at", null: false @@ -743,6 +752,7 @@ ActiveRecord::Schema.define(version: 2019_01_03_124754) do add_foreign_key "statuses_tags", "tags", name: "fk_3081861e21", on_delete: :cascade add_foreign_key "stream_entries", "accounts", name: "fk_5659b17554", on_delete: :cascade add_foreign_key "subscriptions", "accounts", name: "fk_9847d1cbb5", on_delete: :cascade + add_foreign_key "tombstones", "accounts", on_delete: :cascade add_foreign_key "users", "accounts", name: "fk_50500f500d", on_delete: :cascade add_foreign_key "users", "invites", on_delete: :nullify add_foreign_key "users", "oauth_applications", column: "created_by_application_id", on_delete: :nullify