# Pleroma: A lightweight social networking server
-# Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Object do
use Ecto.Schema
- alias Pleroma.{Repo, Object, User, Activity, HTML}
- import Ecto.{Query, Changeset}
+
+ alias Pleroma.Activity
+ alias Pleroma.Object
+ alias Pleroma.Object.Fetcher
+ alias Pleroma.ObjectTombstone
+ alias Pleroma.Repo
+ alias Pleroma.User
+
+ import Ecto.Query
+ import Ecto.Changeset
+
+ require Logger
schema "objects" do
field(:data, :map)
|> unique_constraint(:ap_id, name: :objects_unique_apid_index)
end
+ def get_by_id(nil), do: nil
+ def get_by_id(id), do: Repo.get(Object, id)
+
def get_by_ap_id(nil), do: nil
def get_by_ap_id(ap_id) do
Repo.one(from(object in Object, where: fragment("(?)->>'id' = ?", object.data, ^ap_id)))
end
- def normalize(obj) when is_map(obj), do: Object.get_by_ap_id(obj["id"])
- def normalize(ap_id) when is_binary(ap_id), do: Object.get_by_ap_id(ap_id)
- def normalize(_), do: nil
+ defp warn_on_no_object_preloaded(ap_id) do
+ "Object.normalize() called without preloaded object (#{ap_id}). Consider preloading the object"
+ |> Logger.debug()
+
+ Logger.debug("Backtrace: #{inspect(Process.info(:erlang.self(), :current_stacktrace))}")
+ end
+
+ def normalize(_, fetch_remote \\ true, options \\ [])
+
+ # If we pass an Activity to Object.normalize(), we can try to use the preloaded object.
+ # Use this whenever possible, especially when walking graphs in an O(N) loop!
+ def normalize(%Object{} = object, _, _), do: object
+ def normalize(%Activity{object: %Object{} = object}, _, _), do: object
+
+ # A hack for fake activities
+ def normalize(%Activity{data: %{"object" => %{"fake" => true} = data}}, _, _) do
+ %Object{id: "pleroma:fake_object_id", data: data}
+ end
+
+ # No preloaded object
+ def normalize(%Activity{data: %{"object" => %{"id" => ap_id}}}, fetch_remote, _) do
+ warn_on_no_object_preloaded(ap_id)
+ normalize(ap_id, fetch_remote)
+ end
+
+ # No preloaded object
+ def normalize(%Activity{data: %{"object" => ap_id}}, fetch_remote, _) do
+ warn_on_no_object_preloaded(ap_id)
+ normalize(ap_id, fetch_remote)
+ end
+
+ # Old way, try fetching the object through cache.
+ def normalize(%{"id" => ap_id}, fetch_remote, _), do: normalize(ap_id, fetch_remote)
+ def normalize(ap_id, false, _) when is_binary(ap_id), do: get_cached_by_ap_id(ap_id)
+
+ def normalize(ap_id, true, options) when is_binary(ap_id) do
+ Fetcher.fetch_object_from_id!(ap_id, options)
+ end
+
+ def normalize(_, _, _), do: nil
# Owned objects can only be mutated by their owner
def authorize_mutation(%Object{data: %{"actor" => actor}}, %User{ap_id: ap_id}),
# Legacy objects can be mutated by anybody
def authorize_mutation(%Object{}, %User{}), do: true
- if Mix.env() == :test do
- def get_cached_by_ap_id(ap_id) do
- get_by_ap_id(ap_id)
- end
- else
- def get_cached_by_ap_id(ap_id) do
- key = "object:#{ap_id}"
+ def get_cached_by_ap_id(ap_id) do
+ key = "object:#{ap_id}"
- Cachex.fetch!(:object_cache, key, fn _ ->
- object = get_by_ap_id(ap_id)
+ Cachex.fetch!(:object_cache, key, fn _ ->
+ object = get_by_ap_id(ap_id)
- if object do
- {:commit, object}
- else
- {:ignore, object}
- end
- end)
- end
+ if object do
+ {:commit, object}
+ else
+ {:ignore, object}
+ end
+ end)
end
def context_mapping(context) do
Object.change(%Object{}, %{data: %{"id" => context}})
end
+ def make_tombstone(%Object{data: %{"id" => id, "type" => type}}, deleted \\ DateTime.utc_now()) do
+ %ObjectTombstone{
+ id: id,
+ formerType: type,
+ deleted: deleted
+ }
+ |> Map.from_struct()
+ end
+
+ def swap_object_with_tombstone(object) do
+ tombstone = make_tombstone(object)
+
+ object
+ |> Object.change(%{data: tombstone})
+ |> Repo.update()
+ end
+
def delete(%Object{data: %{"id" => id}} = object) do
- with Repo.delete(object),
- Repo.delete_all(Activity.all_non_create_by_object_ap_id_q(id)),
+ with {:ok, _obj} = swap_object_with_tombstone(object),
+ deleted_activity = Activity.delete_by_ap_id(id),
+ {:ok, true} <- Cachex.del(:object_cache, "object:#{id}") do
+ {:ok, object, deleted_activity}
+ end
+ end
+
+ def prune(%Object{data: %{"id" => id}} = object) do
+ with {:ok, object} <- Repo.delete(object),
{:ok, true} <- Cachex.del(:object_cache, "object:#{id}") do
{:ok, object}
end
end
- def get_cached_scrubbed_html(content, scrubbers, object) do
- key = "#{generate_scrubber_signature(scrubbers)}|#{object.id}"
- Cachex.fetch!(:scrubber_cache, key, fn _key -> ensure_scrubbed_html(content, scrubbers) end)
+ def set_cache(%Object{data: %{"id" => ap_id}} = object) do
+ Cachex.put(:object_cache, "object:#{ap_id}", object)
+ {:ok, object}
end
- def get_cached_stripped_html(content, object) do
- get_cached_scrubbed_html(content, HtmlSanitizeEx.Scrubber.StripTags, object)
+ def update_and_set_cache(changeset) do
+ with {:ok, object} <- Repo.update(changeset) do
+ set_cache(object)
+ end
end
- def ensure_scrubbed_html(
- content,
- scrubbers
- ) do
- {:commit, HTML.filter_tags(content, scrubbers)}
+ def increase_replies_count(ap_id) do
+ Object
+ |> where([o], fragment("?->>'id' = ?::text", o.data, ^to_string(ap_id)))
+ |> update([o],
+ set: [
+ data:
+ fragment(
+ """
+ jsonb_set(?, '{repliesCount}',
+ (coalesce((?->>'repliesCount')::int, 0) + 1)::varchar::jsonb, true)
+ """,
+ o.data,
+ o.data
+ )
+ ]
+ )
+ |> Repo.update_all([])
+ |> case do
+ {1, [object]} -> set_cache(object)
+ _ -> {:error, "Not found"}
+ end
end
- defp generate_scrubber_signature(scrubber) when is_atom(scrubber) do
- generate_scrubber_signature([scrubber])
+ def decrease_replies_count(ap_id) do
+ Object
+ |> where([o], fragment("?->>'id' = ?::text", o.data, ^to_string(ap_id)))
+ |> update([o],
+ set: [
+ data:
+ fragment(
+ """
+ jsonb_set(?, '{repliesCount}',
+ (greatest(0, (?->>'repliesCount')::int - 1))::varchar::jsonb, true)
+ """,
+ o.data,
+ o.data
+ )
+ ]
+ )
+ |> Repo.update_all([])
+ |> case do
+ {1, [object]} -> set_cache(object)
+ _ -> {:error, "Not found"}
+ end
end
- defp generate_scrubber_signature(scrubbers) do
- Enum.reduce(scrubbers, "", fn scrubber, signature ->
- # If a scrubber does not have a version(e.g HtmlSanitizeEx.Scrubber) it is assumed it is always 0)
- version =
- if Kernel.function_exported?(scrubber, :version, 0) do
- scrubber.version
+ def increase_vote_count(ap_id, name) do
+ with %Object{} = object <- Object.normalize(ap_id),
+ "Question" <- object.data["type"] do
+ multiple = Map.has_key?(object.data, "anyOf")
+
+ options =
+ (object.data["anyOf"] || object.data["oneOf"] || [])
+ |> Enum.map(fn
+ %{"name" => ^name} = option ->
+ Kernel.update_in(option["replies"]["totalItems"], &(&1 + 1))
+
+ option ->
+ option
+ end)
+
+ data =
+ if multiple do
+ Map.put(object.data, "anyOf", options)
else
- 0
+ Map.put(object.data, "oneOf", options)
end
- "#{signature}#{to_string(scrubber)}#{version}"
- end)
+ object
+ |> Object.change(%{data: data})
+ |> update_and_set_cache()
+ else
+ _ -> :noop
+ end
end
end