X-Git-Url: http://git.squeep.com/?a=blobdiff_plain;f=lib%2Fpleroma%2Fobject.ex;h=b4a994da98320256d54759d1d08e482ecb3231a3;hb=07a48b9293e4046c50b5d424d60a1bf16c7cc198;hp=e678fd415465850fb452bcd4075ae612bff95f9f;hpb=5102468d0f8067548ef233b5947da4bc517f5774;p=akkoma

diff --git a/lib/pleroma/object.ex b/lib/pleroma/object.ex
index e678fd415..844251a18 100644
--- a/lib/pleroma/object.ex
+++ b/lib/pleroma/object.ex
@@ -1,5 +1,5 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Object do
@@ -9,11 +9,14 @@ defmodule Pleroma.Object do
   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
+  alias Pleroma.Workers.AttachmentsCleanupWorker
 
   require Logger
 
@@ -21,9 +24,13 @@ defmodule Pleroma.Object do
 
   @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
 
@@ -45,7 +52,8 @@ defmodule Pleroma.Object do
   end
 
   def create(data) do
-    Object.change(%Object{}, %{data: data})
+    %Object{}
+    |> Object.change(%{data: data})
     |> Repo.insert()
   end
 
@@ -54,8 +62,41 @@ defmodule Pleroma.Object do
     |> cast(params, [:data])
     |> validate_required([:data])
     |> unique_constraint(:ap_id, name: :objects_unique_apid_index)
+    # Expecting `maybe_handle_hashtags_change/1` to run last:
+    |> maybe_handle_hashtags_change(struct)
+  end
+
+  # Note: not checking activity type (assuming non-legacy objects are associated with Create act.)
+  defp maybe_handle_hashtags_change(changeset, struct) do
+    with %Ecto.Changeset{valid?: true} <- changeset,
+         data_hashtags_change = get_change(changeset, :data),
+         {_, true} <- {:changed, 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
+      %{valid?: false} ->
+        changeset
+
+      {:changed, false} ->
+        changeset
+
+      {:error, _} ->
+        validate_change(changeset, :data, fn _, _ ->
+          [data: "error referencing hashtags"]
+        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)
 
@@ -104,54 +145,67 @@ defmodule Pleroma.Object do
     Logger.debug("Backtrace: #{inspect(Process.info(:erlang.self(), :current_stacktrace))}")
   end
 
-  def normalize(_, fetch_remote \\ true, options \\ [])
+  def normalize(_, options \\ [fetch: false, id_only: false])
 
   # 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
+  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
+  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
+  def normalize(%Activity{data: %{"object" => %{"id" => ap_id}}}, options) do
     warn_on_no_object_preloaded(ap_id)
-    normalize(ap_id, fetch_remote)
+    normalize(ap_id, options)
   end
 
   # No preloaded object
-  def normalize(%Activity{data: %{"object" => ap_id}}, fetch_remote, _) do
+  def normalize(%Activity{data: %{"object" => ap_id}}, options) do
     warn_on_no_object_preloaded(ap_id)
-    normalize(ap_id, fetch_remote)
+    normalize(ap_id, options)
   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(%{"id" => ap_id}, options), do: normalize(ap_id, options)
+
+  def normalize(ap_id, options) when is_binary(ap_id) do
+    cond do
+      Keyword.get(options, :id_only) ->
+        ap_id
+
+      Keyword.get(options, :fetch) ->
+        Fetcher.fetch_object_from_id!(ap_id, options)
 
-  def normalize(ap_id, true, options) when is_binary(ap_id) do
-    Fetcher.fetch_object_from_id!(ap_id, options)
+      true ->
+        get_cached_by_ap_id(ap_id)
+    end
   end
 
-  def normalize(_, _, _), do: nil
+  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}"
 
-    with {:ok, nil} <- Cachex.get(:object_cache, key),
+    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
+         {:ok, true} <- @cachex.put(:object_cache, key, object) do
       object
     else
       {:ok, object} -> object
@@ -159,10 +213,6 @@ defmodule Pleroma.Object do
     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,
@@ -175,37 +225,51 @@ defmodule Pleroma.Object do
   def swap_object_with_tombstone(object) do
     tombstone = make_tombstone(object)
 
-    object
-    |> Object.change(%{data: tombstone})
-    |> Repo.update()
+    with {:ok, object} <-
+           object
+           |> Object.change(%{data: tombstone})
+           |> Repo.update() do
+      Hashtag.unlink(object)
+      {:ok, object}
+    end
   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, _} <- invalid_object_cache(object) do
+      cleanup_attachments(
+        Config.get([:instance, :cleanup_attachments]),
+        %{object: object}
+      )
 
       {:ok, object, deleted_activity}
     end
   end
 
-  def prune(%Object{data: %{"id" => id}} = object) do
+  @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
+
+  def cleanup_attachments(_, _), do: {:ok, nil}
+
+  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
 
@@ -238,6 +302,10 @@ defmodule Pleroma.Object do
     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)))
@@ -262,12 +330,12 @@ defmodule Pleroma.Object do
   end
 
   def increase_vote_count(ap_id, name, actor) do
-    with %Object{} = object <- Object.normalize(ap_id),
+    with %Object{} = object <- Object.normalize(ap_id, fetch: false),
          "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))
@@ -279,11 +347,8 @@ defmodule Pleroma.Object do
       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
@@ -302,11 +367,11 @@ defmodule Pleroma.Object do
   end
 
   def local?(%Object{data: %{"id" => id}}) do
-    String.starts_with?(id, Pleroma.Web.base_url() <> "/")
+    String.starts_with?(id, Pleroma.Web.Endpoint.url() <> "/")
   end
 
   def replies(object, opts \\ []) do
-    object = Object.normalize(object)
+    object = Object.normalize(object, fetch: false)
 
     query =
       Object
@@ -326,4 +391,39 @@ defmodule Pleroma.Object do
 
   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{} = object) do
+    # Note: always using embedded hashtags regardless whether they are migrated to hashtags table
+    #   (embedded hashtags stay in sync anyways, and we avoid extra joins and preload hassle)
+    embedded_hashtags(object)
+  end
+
+  def embedded_hashtags(%Object{data: data}) do
+    object_data_hashtags(data)
+  end
+
+  def embedded_hashtags(_), do: []
+
+  def object_data_hashtags(%{"tag" => tags}) when is_list(tags) do
+    tags
+    |> Enum.filter(fn
+      %{"type" => "Hashtag"} = data -> Map.has_key?(data, "name")
+      plain_text when is_bitstring(plain_text) -> true
+      _ -> false
+    end)
+    |> Enum.map(fn
+      %{"name" => "#" <> hashtag} -> String.downcase(hashtag)
+      %{"name" => hashtag} -> String.downcase(hashtag)
+      hashtag when is_bitstring(hashtag) -> String.downcase(hashtag)
+    end)
+    |> Enum.uniq()
+    # Note: "" elements (plain text) might occur in `data.tag` for incoming objects
+    |> Enum.filter(&(&1 not in [nil, ""]))
+  end
+
+  def object_data_hashtags(_), do: []
 end