X-Git-Url: https://git.squeep.com/?a=blobdiff_plain;f=lib%2Fpleroma%2Fobject.ex;h=ff5eb9b27b43a243d22483c27bf38923363e5d1b;hb=32d1e048178a94017c9d8cca79b28272fa6da9f4;hp=558e151b093bac8a48f972cf2c81e2e9fa3404a3;hpb=4afbef39f49948ddd3b1cd1bbda58ff7e3ac2785;p=akkoma

diff --git a/lib/pleroma/object.ex b/lib/pleroma/object.ex
index 558e151b0..20aba4c15 100644
--- a/lib/pleroma/object.ex
+++ b/lib/pleroma/object.ex
@@ -1,7 +1,25 @@
+# Pleroma: A lightweight social networking server
+# 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}
-  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
+
+  @type t() :: %__MODULE__{}
+
+  @derive {Jason.Encoder, only: [:data]}
 
   schema "objects" do
     field(:data, :map)
@@ -9,6 +27,23 @@ defmodule Pleroma.Object do
     timestamps()
   end
 
+  def with_joined_activity(query, activity_type \\ "Create", join_type \\ :inner) do
+    object_position = Map.get(query.aliases, :object, 0)
+
+    join(query, join_type, [{object, object_position}], a in Activity,
+      on:
+        fragment(
+          "COALESCE(?->'object'->>'id', ?->>'object') = (? ->> 'id') AND (?->>'type' = ?) ",
+          a.data,
+          a.data,
+          object.data,
+          a.data,
+          ^activity_type
+        ),
+      as: :object_activity
+    )
+  end
+
   def create(data) do
     Object.change(%Object{}, %{data: data})
     |> Repo.insert()
@@ -21,35 +56,271 @@ defmodule Pleroma.Object do
     |> 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_id_and_maybe_refetch(id, opts \\ []) do
+    %{updated_at: updated_at} = object = get_by_id(id)
+
+    if opts[:interval] &&
+         NaiveDateTime.diff(NaiveDateTime.utc_now(), updated_at) > opts[:interval] do
+      case Fetcher.refetch_object(object) do
+        {:ok, %Object{} = object} ->
+          object
+
+        e ->
+          Logger.error("Couldn't refresh #{object.data["id"]}:\n#{inspect(e)}")
+          object
+      end
+    else
+      object
+    end
+  end
+
   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
 
+  @doc """
+  Get a single attachment by it's name and href
+  """
+  @spec get_attachment_by_name_and_href(String.t(), String.t()) :: Object.t() | nil
+  def get_attachment_by_name_and_href(name, href) do
+    query =
+      from(o in Object,
+        where: fragment("(?)->>'name' = ?", o.data, ^name),
+        where: fragment("(?)->>'href' = ?", o.data, ^href)
+      )
+
+    Repo.one(query)
+  end
+
+  defp warn_on_no_object_preloaded(ap_id) do
+    "Object.normalize() called without preloaded object (#{inspect(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}),
+    do: actor == ap_id
+
+  # Legacy objects can be mutated by anybody
+  def authorize_mutation(%Object{}, %User{}), do: true
+
+  @spec get_cached_by_ap_id(String.t()) :: Object.t() | nil
   def get_cached_by_ap_id(ap_id) do
-    if Mix.env() == :test do
-      get_by_ap_id(ap_id)
+    key = "object:#{ap_id}"
+
+    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
-      key = "object:#{ap_id}"
-
-      Cachex.get!(
-        :user_cache,
-        key,
-        fallback: fn _ ->
-          object = get_by_ap_id(ap_id)
-
-          if object do
-            {:commit, object}
-          else
-            {:ignore, object}
-          end
-        end
-      )
+      {:ok, object} -> object
+      nil -> nil
     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 {:ok, _obj} = swap_object_with_tombstone(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
+      with true <- Pleroma.Config.get([:instance, :cleanup_attachments]) do
+        {:ok, _} =
+          Pleroma.Workers.AttachmentsCleanupWorker.enqueue("cleanup_attachments", %{
+            "object" => object
+          })
+      end
+
+      {: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}"),
+         {:ok, _} <- Cachex.del(:web_resp_cache, URI.parse(id).path) do
+      {:ok, object}
+    end
+  end
+
+  def set_cache(%Object{data: %{"id" => ap_id}} = object) do
+    Cachex.put(:object_cache, "object:#{ap_id}", object)
+    {:ok, object}
+  end
+
+  def update_and_set_cache(changeset) do
+    with {:ok, object} <- Repo.update(changeset) do
+      set_cache(object)
+    end
+  end
+
+  def increase_replies_count(ap_id) do
+    Object
+    |> where([o], fragment("?->>'id' = ?::text", o.data, ^to_string(ap_id)))
+    |> update([o],
+      set: [
+        data:
+          fragment(
+            """
+            safe_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
+
+  def decrease_replies_count(ap_id) do
+    Object
+    |> where([o], fragment("?->>'id' = ?::text", o.data, ^to_string(ap_id)))
+    |> update([o],
+      set: [
+        data:
+          fragment(
+            """
+            safe_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
+
+  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
+          Map.put(object.data, "oneOf", options)
+        end
+
+      object
+      |> Object.change(%{data: data})
+      |> update_and_set_cache()
+    else
+      _ -> :noop
+    end
+  end
+
+  @doc "Updates data field of an object"
+  def update_data(%Object{data: data} = object, attrs \\ %{}) do
+    object
+    |> Object.change(%{data: Map.merge(data || %{}, attrs)})
+    |> Repo.update()
+  end
+
+  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))
 end