+# 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.
This module encodes our addressing policies and general shape of our 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
+ alias Pleroma.Web.Endpoint
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
+
+ defp unicode_emoji_react(_object, data, emoji) do
+ data
+ |> Map.put("content", emoji)
+ |> Map.put("type", "EmojiReact")
+ end
+
+ defp add_emoji_content(data, emoji, url) do
+ data
+ |> Map.put("content", Emoji.maybe_quote(emoji))
+ |> Map.put("type", "EmojiReact")
+ |> Map.put("tag", [
+ %{}
+ |> Map.put("id", url)
+ |> Map.put("type", "Emoji")
+ |> Map.put("name", Emoji.maybe_quote(emoji))
+ |> Map.put(
+ "icon",
+ %{}
+ |> Map.put("type", "Image")
+ |> Map.put("url", url)
+ )
+ ])
+ end
+
+ defp remote_custom_emoji_react(
+ %{data: %{"reactions" => existing_reactions}},
+ data,
+ emoji
+ ) do
+ [emoji_code, instance] = String.split(Emoji.stripped_name(emoji), "@")
+
+ matching_reaction =
+ Enum.find(
+ existing_reactions,
+ fn [name, _, url] ->
+ url = URI.parse(url)
+ url.host == instance && name == emoji_code
+ end
+ )
+
+ if matching_reaction do
+ [name, _, url] = matching_reaction
+ add_emoji_content(data, name, url)
+ else
+ {:error, "Could not react"}
+ end
+ end
+
+ defp remote_custom_emoji_react(_object, _data, _emoji) do
+ {:error, "Could not react"}
+ end
+
+ defp local_custom_emoji_react(data, emoji) do
+ with %{} = emojo <- Emoji.get(emoji) do
+ path = emojo |> Map.get(:file)
+ url = "#{Endpoint.url()}#{path}"
+ add_emoji_content(data, emojo.code, url)
+ else
+ _ -> {:error, "Emoji does not exist"}
+ end
+ end
+
+ defp custom_emoji_react(object, data, emoji) do
+ if String.contains?(emoji, "@") do
+ remote_custom_emoji_react(object, data, emoji)
+ else
+ local_custom_emoji_react(data, emoji)
+ end
+ 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")
+ if Emoji.is_unicode_emoji?(emoji) do
+ unicode_emoji_react(object, data, emoji)
+ else
+ custom_emoji_react(object, data, emoji)
+ end
{:ok, data, meta}
end
@spec delete(User.t(), String.t()) :: {:ok, map(), keyword()}
def delete(actor, object_id) do
- object = Object.normalize(object_id, false)
+ object = Object.normalize(object_id, fetch: false)
user = !object && User.get_cached_by_ap_id(object_id)
}, []}
end
+ def create(actor, object, recipients) do
+ context =
+ if is_map(object) do
+ object["context"]
+ else
+ nil
+ end
+
+ {:ok,
+ %{
+ "id" => Utils.generate_activity_id(),
+ "actor" => actor.ap_id,
+ "to" => recipients,
+ "object" => object,
+ "type" => "Create",
+ "published" => DateTime.utc_now() |> DateTime.to_iso8601()
+ }
+ |> Pleroma.Maps.put_if_present("context", context), []}
+ end
+
+ @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)
+ |> add_quote(draft.quote)
+ |> 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
+
+ defp add_quote(object, nil), do: object
+
+ defp add_quote(object, quote) do
+ with %Object{} = quote_object <- Object.normalize(quote, fetch: false) do
+ Map.put(object, "quoteUri", quote_object.data["id"])
+ else
+ _ -> object
+ end
+ end
+
+ def answer(user, object, name) do
+ {:ok,
+ %{
+ "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(),
+ "id" => Utils.generate_object_id()
+ }, []}
+ end
+
@spec tombstone(String.t(), String.t()) :: {:ok, map(), keyword()}
def tombstone(actor, id) do
{:ok,
end
end
+ @spec update(User.t(), Object.t()) :: {:ok, map(), keyword()}
+ def update(actor, object) do
+ {to, cc} =
+ if object["type"] in Pleroma.Constants.actor_types() do
+ # User updates, always public
+ {[Pleroma.Constants.as_public(), actor.follower_address], []}
+ else
+ # Status updates, follow the recipients in the object
+ {object["to"] || [], object["cc"] || []}
+ end
+
+ {:ok,
+ %{
+ "id" => Utils.generate_activity_id(),
+ "type" => "Update",
+ "actor" => actor.ap_id,
+ "object" => object,
+ "to" => to,
+ "cc" => cc
+ }, []}
+ 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.relay_ap_id() ->
+ 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()]
"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