+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
defmodule Pleroma.Web.ActivityPub.Builder do
@moduledoc """
This module builds the objects. Meant to be used for creating local objects.
alias Pleroma.Emoji
alias Pleroma.Object
alias Pleroma.User
+ alias Pleroma.Web.ActivityPub.Relay
alias Pleroma.Web.ActivityPub.Utils
alias Pleroma.Web.ActivityPub.Visibility
+ alias Pleroma.Web.CommonAPI.ActivityDraft
+
+ require Pleroma.Constants
+
+ def accept_or_reject(actor, activity, type) do
+ data = %{
+ "id" => Utils.generate_activity_id(),
+ "actor" => actor.ap_id,
+ "type" => type,
+ "object" => activity.data["id"],
+ "to" => [activity.actor]
+ }
+
+ {:ok, data, []}
+ end
+
+ @spec reject(User.t(), Activity.t()) :: {:ok, map(), keyword()}
+ def reject(actor, rejected_activity) do
+ accept_or_reject(actor, rejected_activity, "Reject")
+ end
+
+ @spec accept(User.t(), Activity.t()) :: {:ok, map(), keyword()}
+ def accept(actor, accepted_activity) do
+ accept_or_reject(actor, accepted_activity, "Accept")
+ end
+
+ @spec follow(User.t(), User.t()) :: {:ok, map(), keyword()}
+ def follow(follower, followed) do
+ data = %{
+ "id" => Utils.generate_activity_id(),
+ "actor" => follower.ap_id,
+ "type" => "Follow",
+ "object" => followed.ap_id,
+ "to" => [followed.ap_id]
+ }
+
+ {:ok, data, []}
+ end
+
+ @spec emoji_react(User.t(), Object.t(), String.t()) :: {:ok, map(), keyword()}
+ def emoji_react(actor, object, emoji) do
+ with {:ok, data, meta} <- object_action(actor, object) do
+ data =
+ data
+ |> Map.put("content", emoji)
+ |> Map.put("type", "EmojiReact")
+
+ {:ok, data, meta}
+ end
+ end
+
+ @spec undo(User.t(), Activity.t()) :: {:ok, map(), keyword()}
+ def undo(actor, object) do
+ {:ok,
+ %{
+ "id" => Utils.generate_activity_id(),
+ "actor" => actor.ap_id,
+ "type" => "Undo",
+ "object" => object.data["id"],
+ "to" => object.data["to"] || [],
+ "cc" => object.data["cc"] || []
+ }, []}
+ end
+
+ @spec delete(User.t(), String.t()) :: {:ok, map(), keyword()}
+ def delete(actor, object_id) do
+ object = Object.normalize(object_id, fetch: false)
+
+ user = !object && User.get_cached_by_ap_id(object_id)
+
+ to =
+ case {object, user} do
+ {%Object{}, _} ->
+ # We are deleting an object, address everyone who was originally mentioned
+ (object.data["to"] || []) ++ (object.data["cc"] || [])
+
+ {_, %User{follower_address: follower_address}} ->
+ # We are deleting a user, address the followers of that user
+ [follower_address]
+ end
+
+ {:ok,
+ %{
+ "id" => Utils.generate_activity_id(),
+ "actor" => actor.ap_id,
+ "object" => object_id,
+ "to" => to,
+ "type" => "Delete"
+ }, []}
+ end
def create(actor, object, recipients) do
+ context =
+ if is_map(object) do
+ object["context"]
+ else
+ nil
+ end
+
{:ok,
%{
"id" => Utils.generate_activity_id(),
"object" => object,
"type" => "Create",
"published" => DateTime.utc_now() |> DateTime.to_iso8601()
- }, []}
+ }
+ |> Pleroma.Maps.put_if_present("context", context), []}
end
- def chat_message(actor, recipient, content) do
+ @spec note(ActivityDraft.t()) :: {:ok, map(), keyword()}
+ def note(%ActivityDraft{} = draft) do
+ data =
+ %{
+ "type" => "Note",
+ "to" => draft.to,
+ "cc" => draft.cc,
+ "content" => draft.content_html,
+ "summary" => draft.summary,
+ "sensitive" => draft.sensitive,
+ "context" => draft.context,
+ "attachment" => draft.attachments,
+ "actor" => draft.user.ap_id,
+ "tag" => Keyword.values(draft.tags) |> Enum.uniq()
+ }
+ |> add_in_reply_to(draft.in_reply_to)
+ |> Map.merge(draft.extra)
+
+ {:ok, data, []}
+ end
+
+ defp add_in_reply_to(object, nil), do: object
+
+ defp add_in_reply_to(object, in_reply_to) do
+ with %Object{} = in_reply_to_object <- Object.normalize(in_reply_to, fetch: false) do
+ Map.put(object, "inReplyTo", in_reply_to_object.data["id"])
+ else
+ _ -> object
+ end
+ end
+
+ def chat_message(actor, recipient, content, opts \\ []) do
+ basic = %{
+ "id" => Utils.generate_object_id(),
+ "actor" => actor.ap_id,
+ "type" => "ChatMessage",
+ "to" => [recipient],
+ "content" => content,
+ "published" => DateTime.utc_now() |> DateTime.to_iso8601(),
+ "emoji" => Emoji.Formatter.get_emoji_map(content)
+ }
+
+ case opts[:attachment] do
+ %Object{data: attachment_data} ->
+ {
+ :ok,
+ Map.put(basic, "attachment", attachment_data),
+ []
+ }
+
+ _ ->
+ {:ok, basic, []}
+ end
+ end
+
+ def answer(user, object, name) do
{:ok,
%{
- "id" => Utils.generate_object_id(),
- "actor" => actor.ap_id,
- "type" => "ChatMessage",
- "to" => [recipient],
- "content" => content,
+ "type" => "Answer",
+ "actor" => user.ap_id,
+ "attributedTo" => user.ap_id,
+ "cc" => [object.data["actor"]],
+ "to" => [],
+ "name" => name,
+ "inReplyTo" => object.data["id"],
+ "context" => object.data["context"],
"published" => DateTime.utc_now() |> DateTime.to_iso8601(),
- "emoji" => Emoji.Formatter.get_emoji_map(content)
+ "id" => Utils.generate_object_id()
+ }, []}
+ end
+
+ @spec tombstone(String.t(), String.t()) :: {:ok, map(), keyword()}
+ def tombstone(actor, id) do
+ {:ok,
+ %{
+ "id" => id,
+ "actor" => actor,
+ "type" => "Tombstone"
}, []}
end
@spec like(User.t(), Object.t()) :: {:ok, map(), keyword()}
def like(actor, object) do
+ with {:ok, data, meta} <- object_action(actor, object) do
+ data =
+ data
+ |> Map.put("type", "Like")
+
+ {:ok, data, meta}
+ end
+ end
+
+ # Retricted to user updates for now, always public
+ @spec update(User.t(), Object.t()) :: {:ok, map(), keyword()}
+ def update(actor, object) do
+ to = [Pleroma.Constants.as_public(), actor.follower_address]
+
+ {:ok,
+ %{
+ "id" => Utils.generate_activity_id(),
+ "type" => "Update",
+ "actor" => actor.ap_id,
+ "object" => object,
+ "to" => to
+ }, []}
+ end
+
+ @spec block(User.t(), User.t()) :: {:ok, map(), keyword()}
+ def block(blocker, blocked) do
+ {:ok,
+ %{
+ "id" => Utils.generate_activity_id(),
+ "type" => "Block",
+ "actor" => blocker.ap_id,
+ "object" => blocked.ap_id,
+ "to" => [blocked.ap_id]
+ }, []}
+ end
+
+ @spec announce(User.t(), Object.t(), keyword()) :: {:ok, map(), keyword()}
+ def announce(actor, object, options \\ []) do
+ public? = Keyword.get(options, :public, false)
+
+ to =
+ cond do
+ actor.ap_id == Relay.ap_id() ->
+ [actor.follower_address]
+
+ public? and Visibility.is_local_public?(object) ->
+ [actor.follower_address, object.data["actor"], Utils.as_local_public()]
+
+ public? ->
+ [actor.follower_address, object.data["actor"], Pleroma.Constants.as_public()]
+
+ true ->
+ [actor.follower_address, object.data["actor"]]
+ end
+
+ {:ok,
+ %{
+ "id" => Utils.generate_activity_id(),
+ "actor" => actor.ap_id,
+ "object" => object.data["id"],
+ "to" => to,
+ "context" => object.data["context"],
+ "type" => "Announce",
+ "published" => Utils.make_date()
+ }, []}
+ end
+
+ @spec object_action(User.t(), Object.t()) :: {:ok, map(), keyword()}
+ defp object_action(actor, object) do
object_actor = User.get_cached_by_ap_id(object.data["actor"])
# Address the actor of the object, and our actor's follower collection if the post is public.
%{
"id" => Utils.generate_activity_id(),
"actor" => actor.ap_id,
- "type" => "Like",
"object" => object.data["id"],
"to" => to,
"cc" => cc,
"context" => object.data["context"]
}, []}
end
+
+ @spec pin(User.t(), Object.t()) :: {:ok, map(), keyword()}
+ def pin(%User{} = user, object) do
+ {:ok,
+ %{
+ "id" => Utils.generate_activity_id(),
+ "target" => pinned_url(user.nickname),
+ "object" => object.data["id"],
+ "actor" => user.ap_id,
+ "type" => "Add",
+ "to" => [Pleroma.Constants.as_public()],
+ "cc" => [user.follower_address]
+ }, []}
+ end
+
+ @spec unpin(User.t(), Object.t()) :: {:ok, map, keyword()}
+ def unpin(%User{} = user, object) do
+ {:ok,
+ %{
+ "id" => Utils.generate_activity_id(),
+ "target" => pinned_url(user.nickname),
+ "object" => object.data["id"],
+ "actor" => user.ap_id,
+ "type" => "Remove",
+ "to" => [Pleroma.Constants.as_public()],
+ "cc" => [user.follower_address]
+ }, []}
+ end
+
+ defp pinned_url(nickname) when is_binary(nickname) do
+ Pleroma.Web.Router.Helpers.activity_pub_url(Pleroma.Web.Endpoint, :pinned, nickname)
+ end
end