# Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
# SPDX-License-Identifier: AGPL-3.0-only
defmodule Pleroma.Object do
use Ecto.Schema
+ import Ecto.Query
+ import Ecto.Changeset
+
alias Pleroma.Activity
+ alias Pleroma.Config
+ alias Pleroma.Hashtag
alias Pleroma.Object
alias Pleroma.Object.Fetcher
alias Pleroma.ObjectTombstone
alias Pleroma.Repo
alias Pleroma.User
-
- import Ecto.Query
- import Ecto.Changeset
+ alias Pleroma.Workers.AttachmentsCleanupWorker
require Logger
@type t() :: %__MODULE__{}
+ @derive {Jason.Encoder, only: [:data]}
+
+ @cachex Pleroma.Config.get([:cachex, :provider], Cachex)
+
schema "objects" do
field(:data, :map)
+ many_to_many(:hashtags, Hashtag, join_through: "hashtags_objects", on_replace: :delete)
+
timestamps()
end
end
def create(data) do
- Object.change(%Object{}, %{data: data})
+ %Object{}
+ |> Object.change(%{data: data})
|> Repo.insert()
end
|> cast(params, [:data])
|> validate_required([:data])
|> unique_constraint(:ap_id, name: :objects_unique_apid_index)
+ |> maybe_handle_hashtags_change(struct)
+ end
+
+ defp maybe_handle_hashtags_change(changeset, struct) do
+ with data_hashtags_change = get_change(changeset, :data),
+ true <- hashtags_changed?(struct, data_hashtags_change),
+ {:ok, hashtag_records} <-
+ data_hashtags_change
+ |> object_data_hashtags()
+ |> Hashtag.get_or_create_by_names() do
+ put_assoc(changeset, :hashtags, hashtag_records)
+ else
+ false ->
+ changeset
+
+ {:error, hashtag_changeset} ->
+ failed_hashtag = get_field(hashtag_changeset, :name)
+
+ validate_change(changeset, :data, fn _, _ ->
+ [data: "error referencing hashtag: #{failed_hashtag}"]
+ end)
+ end
+ end
+
+ defp hashtags_changed?(%Object{} = struct, %{"tag" => _} = data) do
+ Enum.sort(embedded_hashtags(struct)) !=
+ Enum.sort(object_data_hashtags(data))
end
+ defp hashtags_changed?(_, _), do: false
+
def get_by_id(nil), do: nil
def get_by_id(id), do: Repo.get(Object, id)
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}),
- do: actor == ap_id
+ # Owned objects can only be accessed by their owner
+ def authorize_access(%Object{data: %{"actor" => actor}}, %User{ap_id: ap_id}) do
+ if actor == ap_id do
+ :ok
+ else
+ {:error, :forbidden}
+ end
+ end
- # Legacy objects can be mutated by anybody
- def authorize_mutation(%Object{}, %User{}), do: true
+ # Legacy objects can be accessed by anybody
+ def authorize_access(%Object{}, %User{}), do: :ok
+ @spec get_cached_by_ap_id(String.t()) :: Object.t() | nil
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)
-
- if object do
- {:commit, object}
- else
- {:ignore, object}
- end
- end)
+ with {:ok, nil} <- @cachex.get(:object_cache, key),
+ object when not is_nil(object) <- get_by_ap_id(ap_id),
+ {:ok, true} <- @cachex.put(:object_cache, key, object) do
+ object
+ else
+ {:ok, object} -> object
+ nil -> nil
+ end
end
def context_mapping(context) do
def delete(%Object{data: %{"id" => id}} = object) do
with {:ok, _obj} = swap_object_with_tombstone(object),
- :ok <- delete_attachments(object),
deleted_activity = Activity.delete_all_by_object_ap_id(id),
- {:ok, true} <- Cachex.del(:object_cache, "object:#{id}"),
- {:ok, _} <- Cachex.del(:web_resp_cache, URI.parse(id).path) do
+ {:ok, _} <- invalid_object_cache(object) do
+ cleanup_attachments(
+ Config.get([:instance, :cleanup_attachments]),
+ %{"object" => object}
+ )
+
{:ok, object, deleted_activity}
end
end
- defp delete_attachments(%{data: %{"attachment" => [_ | _] = attachments, "actor" => actor}}) do
- hrefs =
- Enum.flat_map(attachments, fn attachment ->
- Enum.map(attachment["url"], & &1["href"])
- end)
-
- names = Enum.map(attachments, & &1["name"])
-
- uploader = Pleroma.Config.get([Pleroma.Upload, :uploader])
-
- # find all objects for copies of the attachments, name and actor doesn't matter here
- delete_ids =
- from(o in Object,
- where:
- fragment(
- "to_jsonb(array(select jsonb_array_elements((?)#>'{url}') ->> 'href'))::jsonb \\?| (?)",
- o.data,
- ^hrefs
- )
- )
- |> Repo.all()
- # we should delete 1 object for any given attachment, but don't delete files if
- # there are more than 1 object for it
- |> Enum.reduce(%{}, fn %{
- id: id,
- data: %{
- "url" => [%{"href" => href}],
- "actor" => obj_actor,
- "name" => name
- }
- },
- acc ->
- Map.update(acc, href, %{id: id, count: 1}, fn val ->
- case obj_actor == actor and name in names do
- true ->
- # set id of the actor's object that will be deleted
- %{val | id: id, count: val.count + 1}
-
- false ->
- # another actor's object, just increase count to not delete file
- %{val | count: val.count + 1}
- end
- end)
- end)
- |> Enum.map(fn {href, %{id: id, count: count}} ->
- # only delete files that have single instance
- with 1 <- count do
- prefix =
- case Pleroma.Config.get([Pleroma.Upload, :base_url]) do
- nil -> "media"
- _ -> ""
- end
-
- base_url = Pleroma.Config.get([__MODULE__, :base_url], Pleroma.Web.base_url())
-
- file_path = String.trim_leading(href, "#{base_url}/#{prefix}")
-
- uploader.delete_file(file_path)
- end
-
- id
- end)
-
- from(o in Object, where: o.id in ^delete_ids)
- |> Repo.delete_all()
-
- :ok
+ @spec cleanup_attachments(boolean(), %{required(:object) => map()}) ::
+ {:ok, Oban.Job.t() | nil}
+ def cleanup_attachments(true, %{"object" => _} = params) do
+ AttachmentsCleanupWorker.enqueue("cleanup_attachments", params)
end
- defp delete_attachments(%{data: _data}), do: :ok
+ def cleanup_attachments(_, _), do: {:ok, nil}
- def prune(%Object{data: %{"id" => id}} = object) do
+ def prune(%Object{data: %{"id" => _id}} = object) do
with {:ok, object} <- Repo.delete(object),
- {:ok, true} <- Cachex.del(:object_cache, "object:#{id}"),
- {:ok, _} <- Cachex.del(:web_resp_cache, URI.parse(id).path) do
+ {:ok, _} <- invalid_object_cache(object) do
{:ok, object}
end
end
+ def invalid_object_cache(%Object{data: %{"id" => id}}) do
+ with {:ok, true} <- @cachex.del(:object_cache, "object:#{id}") do
+ @cachex.del(:web_resp_cache, URI.parse(id).path)
+ end
+ end
+
def set_cache(%Object{data: %{"id" => ap_id}} = object) do
- Cachex.put(:object_cache, "object:#{ap_id}", object)
+ @cachex.put(:object_cache, "object:#{ap_id}", object)
{:ok, object}
end
end
end
+ defp poll_is_multiple?(%Object{data: %{"anyOf" => [_ | _]}}), do: true
+
+ defp poll_is_multiple?(_), do: false
+
def decrease_replies_count(ap_id) do
Object
|> where([o], fragment("?->>'id' = ?::text", o.data, ^to_string(ap_id)))
end
end
- def increase_vote_count(ap_id, name) do
+ def increase_vote_count(ap_id, name, actor) do
with %Object{} = object <- Object.normalize(ap_id),
"Question" <- object.data["type"] do
- multiple = Map.has_key?(object.data, "anyOf")
+ key = if poll_is_multiple?(object), do: "anyOf", else: "oneOf"
options =
- (object.data["anyOf"] || object.data["oneOf"] || [])
+ object.data[key]
|> Enum.map(fn
%{"name" => ^name} = option ->
Kernel.update_in(option["replies"]["totalItems"], &(&1 + 1))
option
end)
+ voters = [actor | object.data["voters"] || []] |> Enum.uniq()
+
data =
- if multiple do
- Map.put(object.data, "anyOf", options)
- else
- Map.put(object.data, "oneOf", options)
- end
+ object.data
+ |> Map.put(key, options)
+ |> Map.put("voters", voters)
object
|> Object.change(%{data: data})
def local?(%Object{data: %{"id" => id}}) do
String.starts_with?(id, Pleroma.Web.base_url() <> "/")
end
+
+ def replies(object, opts \\ []) do
+ object = Object.normalize(object)
+
+ query =
+ Object
+ |> where(
+ [o],
+ fragment("(?)->>'inReplyTo' = ?", o.data, ^object.data["id"])
+ )
+ |> order_by([o], asc: o.id)
+
+ if opts[:self_only] do
+ actor = object.data["actor"]
+ where(query, [o], fragment("(?)->>'actor' = ?", o.data, ^actor))
+ else
+ query
+ end
+ end
+
+ def self_replies(object, opts \\ []),
+ do: replies(object, Keyword.put(opts, :self_only, true))
+
+ def tags(%Object{data: %{"tag" => tags}}) when is_list(tags), do: tags
+
+ def tags(_), do: []
+
+ def hashtags(object), do: embedded_hashtags(object)
+
+ defp embedded_hashtags(%Object{data: data}) do
+ object_data_hashtags(data)
+ end
+
+ defp embedded_hashtags(_), do: []
+
+ defp object_data_hashtags(%{"tag" => tags}) when is_list(tags) do
+ # Note: AS2 map-type elements are ignored
+ Enum.filter(tags, &is_bitstring(&1))
+ end
+
+ defp object_data_hashtags(_), do: []
end
projects / akkoma / blobdiff