+# Pleroma: A lightweight social networking server
+# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# SPDX-License-Identifier: AGPL-3.0-only
+
defmodule Pleroma.Web.ActivityPub.Transmogrifier do
@moduledoc """
A module to handle coding from internal to wire ActivityPub and back.
"""
+ alias Pleroma.Activity
alias Pleroma.User
alias Pleroma.Object
- alias Pleroma.Activity
alias Pleroma.Repo
alias Pleroma.Web.ActivityPub.ActivityPub
alias Pleroma.Web.ActivityPub.Utils
@doc """
Checks that an imported AP object's actor matches the domain it came from.
"""
- def contain_origin(id, %{"actor" => nil}), do: :error
+ def contain_origin(_id, %{"actor" => nil}), do: :error
- def contain_origin(id, %{"actor" => actor} = params) do
+ def contain_origin(id, %{"actor" => _actor} = params) do
id_uri = URI.parse(id)
actor_uri = URI.parse(get_actor(params))
end
end
+ def contain_origin_from_id(_id, %{"id" => nil}), do: :error
+
+ def contain_origin_from_id(id, %{"id" => other_id} = _params) do
+ id_uri = URI.parse(id)
+ other_uri = URI.parse(other_id)
+
+ if id_uri.host == other_uri.host do
+ :ok
+ else
+ :error
+ end
+ end
+
@doc """
Modifies an incoming AP object (mastodon format) to our internal format.
"""
def fix_object(object) do
object
|> fix_actor
- |> fix_attachments
|> fix_url
+ |> fix_attachments
|> fix_context
|> fix_in_reply_to
|> fix_emoji
end
end
- def fix_addressing(map) do
- map
+ def fix_explicit_addressing(%{"to" => to, "cc" => cc} = object, explicit_mentions) do
+ explicit_to =
+ to
+ |> Enum.filter(fn x -> x in explicit_mentions end)
+
+ explicit_cc =
+ to
+ |> Enum.filter(fn x -> x not in explicit_mentions end)
+
+ final_cc =
+ (cc ++ explicit_cc)
+ |> Enum.uniq()
+
+ object
+ |> Map.put("to", explicit_to)
+ |> Map.put("cc", final_cc)
+ end
+
+ def fix_explicit_addressing(object, _explicit_mentions), do: object
+
+ # if directMessage flag is set to true, leave the addressing alone
+ def fix_explicit_addressing(%{"directMessage" => true} = object), do: object
+
+ def fix_explicit_addressing(object) do
+ explicit_mentions =
+ object
+ |> Utils.determine_explicit_mentions()
+
+ explicit_mentions = explicit_mentions ++ ["https://www.w3.org/ns/activitystreams#Public"]
+
+ object
+ |> fix_explicit_addressing(explicit_mentions)
+ end
+
+ def fix_addressing(object) do
+ object
|> fix_addressing_list("to")
|> fix_addressing_list("cc")
|> fix_addressing_list("bto")
|> fix_addressing_list("bcc")
+ |> fix_explicit_addressing
end
def fix_actor(%{"attributedTo" => actor} = object) do
|> Map.put("actor", get_actor(%{"actor" => actor}))
end
- def fix_likes(%{"likes" => likes} = object)
- when is_bitstring(likes) do
- # Check for standardisation
- # This is what Peertube does
- # curl -H 'Accept: application/activity+json' $likes | jq .totalItems
+ # Check for standardisation
+ # This is what Peertube does
+ # curl -H 'Accept: application/activity+json' $likes | jq .totalItems
+ # Prismo returns only an integer (count) as "likes"
+ def fix_likes(%{"likes" => likes} = object) when not is_map(likes) do
object
|> Map.put("likes", [])
|> Map.put("like_count", 0)
case fetch_obj_helper(in_reply_to_id) do
{:ok, replied_object} ->
with %Activity{} = activity <-
- Activity.get_create_activity_by_object_ap_id(replied_object.data["id"]) do
+ Activity.get_create_by_object_ap_id(replied_object.data["id"]) do
object
|> Map.put("inReplyTo", replied_object.data["id"])
|> Map.put("inReplyToAtomUri", object["inReplyToAtomUri"] || in_reply_to_id)
attachments =
attachment
|> Enum.map(fn data ->
- url = [%{"type" => "Link", "mediaType" => data["mediaType"], "href" => data["url"]}]
- Map.put(data, "url", url)
+ media_type = data["mediaType"] || data["mimeType"]
+ href = data["url"] || data["href"]
+
+ url = [%{"type" => "Link", "mediaType" => media_type, "href" => href}]
+
+ data
+ |> Map.put("mediaType", media_type)
+ |> Map.put("url", url)
end)
object
|> Map.put("url", url["href"])
end
- def fix_url(%{"url" => url} = object) when is_list(url) do
+ def fix_url(%{"type" => "Video", "url" => url} = object) when is_list(url) do
+ first_element = Enum.at(url, 0)
+
+ link_element =
+ url
+ |> Enum.filter(fn x -> is_map(x) end)
+ |> Enum.filter(fn x -> x["mimeType"] == "text/html" end)
+ |> Enum.at(0)
+
+ object
+ |> Map.put("attachment", [first_element])
+ |> Map.put("url", link_element["href"])
+ end
+
+ def fix_url(%{"type" => object_type, "url" => url} = object)
+ when object_type != "Video" and is_list(url) do
first_element = Enum.at(url, 0)
url_string =
|> Map.put("tag", combined)
end
+ def fix_tag(%{"tag" => %{} = tag} = object), do: Map.put(object, "tag", [tag])
+
def fix_tag(object), do: object
# content map usually only has one language so this will do for now.
def fix_content_map(object), do: object
+ defp mastodon_follow_hack(%{"id" => id, "actor" => follower_id}, followed) do
+ with true <- id =~ "follows",
+ %User{local: true} = follower <- User.get_cached_by_ap_id(follower_id),
+ %Activity{} = activity <- Utils.fetch_latest_follow(follower, followed) do
+ {:ok, activity}
+ else
+ _ -> {:error, nil}
+ end
+ end
+
+ defp mastodon_follow_hack(_, _), do: {:error, nil}
+
+ defp get_follow_activity(follow_object, followed) do
+ with object_id when not is_nil(object_id) <- Utils.get_ap_id(follow_object),
+ {_, %Activity{} = activity} <- {:activity, Activity.get_by_ap_id(object_id)} do
+ {:ok, activity}
+ else
+ # Can't find the activity. This might a Mastodon 2.3 "Accept"
+ {:activity, nil} ->
+ mastodon_follow_hack(follow_object, followed)
+
+ _ ->
+ {:error, nil}
+ end
+ end
+
# disallow objects with bogus IDs
def handle_incoming(%{"id" => nil}), do: :error
def handle_incoming(%{"id" => ""}), do: :error
Map.put(data, "actor", actor)
|> fix_addressing
- with nil <- Activity.get_create_activity_by_object_ap_id(object["id"]),
+ with nil <- Activity.get_create_by_object_ap_id(object["id"]),
%User{} = user <- User.get_or_fetch_by_ap_id(data["actor"]) do
object = fix_object(data["object"])
additional:
Map.take(data, [
"cc",
+ "directMessage",
"id"
])
}
end
end
- defp mastodon_follow_hack(%{"id" => id, "actor" => follower_id}, followed) do
- with true <- id =~ "follows",
- %User{local: true} = follower <- User.get_cached_by_ap_id(follower_id),
- %Activity{} = activity <- Utils.fetch_latest_follow(follower, followed) do
- {:ok, activity}
- else
- _ -> {:error, nil}
- end
- end
-
- defp mastodon_follow_hack(_), do: {:error, nil}
-
- defp get_follow_activity(follow_object, followed) do
- with object_id when not is_nil(object_id) <- Utils.get_ap_id(follow_object),
- {_, %Activity{} = activity} <- {:activity, Activity.get_by_ap_id(object_id)} do
- {:ok, activity}
- else
- # Can't find the activity. This might a Mastodon 2.3 "Accept"
- {:activity, nil} ->
- mastodon_follow_hack(follow_object, followed)
-
- _ ->
- {:error, nil}
- end
- end
-
def handle_incoming(
- %{"type" => "Accept", "object" => follow_object, "actor" => actor, "id" => id} = data
+ %{"type" => "Accept", "object" => follow_object, "actor" => _actor, "id" => _id} = data
) do
with actor <- get_actor(data),
%User{} = followed <- User.get_or_fetch_by_ap_id(actor),
local: false
}) do
if not User.following?(follower, followed) do
- {:ok, follower} = User.follow(follower, followed)
+ {:ok, _follower} = User.follow(follower, followed)
end
{:ok, activity}
end
def handle_incoming(
- %{"type" => "Reject", "object" => follow_object, "actor" => actor, "id" => id} = data
+ %{"type" => "Reject", "object" => follow_object, "actor" => _actor, "id" => _id} = data
) do
with actor <- get_actor(data),
%User{} = followed <- User.get_or_fetch_by_ap_id(actor),
{:ok, follow_activity} <- Utils.update_follow_state(follow_activity, "reject"),
%User{local: true} = follower <- User.get_cached_by_ap_id(follow_activity.data["actor"]),
{:ok, activity} <-
- ActivityPub.accept(%{
+ ActivityPub.reject(%{
to: follow_activity.data["to"],
- type: "Accept",
+ type: "Reject",
actor: followed.ap_id,
object: follow_activity.data["id"],
local: false
end
def handle_incoming(
- %{"type" => "Like", "object" => object_id, "actor" => actor, "id" => id} = data
+ %{"type" => "Like", "object" => object_id, "actor" => _actor, "id" => id} = data
) do
with actor <- get_actor(data),
%User{} = actor <- User.get_or_fetch_by_ap_id(actor),
end
def handle_incoming(
- %{"type" => "Announce", "object" => object_id, "actor" => actor, "id" => id} = data
+ %{"type" => "Announce", "object" => object_id, "actor" => _actor, "id" => id} = data
) do
with actor <- get_actor(data),
%User{} = actor <- User.get_or_fetch_by_ap_id(actor),
{:ok, object} <- get_obj_helper(object_id) || fetch_obj_helper(object_id),
- {:ok, activity, _object} <- ActivityPub.announce(actor, object, id, false) do
+ public <- ActivityPub.is_public?(data),
+ {:ok, activity, _object} <- ActivityPub.announce(actor, object, id, false, public) do
{:ok, activity}
else
_e -> :error
update_data =
new_user_data
|> Map.take([:name, :bio, :avatar])
- |> Map.put(:info, Map.merge(actor.info, %{"banner" => banner, "locked" => locked}))
+ |> Map.put(:info, %{"banner" => banner, "locked" => locked})
actor
|> User.upgrade_changeset(update_data)
end
end
- # TODO: Make secure.
+ # TODO: We presently assume that any actor on the same origin domain as the object being
+ # deleted has the rights to delete that object. A better way to validate whether or not
+ # the object should be deleted is to refetch the object URI, which should return either
+ # an error or a tombstone. This would allow us to verify that a deletion actually took
+ # place.
def handle_incoming(
- %{"type" => "Delete", "object" => object_id, "actor" => actor, "id" => _id} = data
+ %{"type" => "Delete", "object" => object_id, "actor" => _actor, "id" => _id} = data
) do
object_id = Utils.get_ap_id(object_id)
with actor <- get_actor(data),
- %User{} = _actor <- User.get_or_fetch_by_ap_id(actor),
+ %User{} = actor <- User.get_or_fetch_by_ap_id(actor),
{:ok, object} <- get_obj_helper(object_id) || fetch_obj_helper(object_id),
+ :ok <- contain_origin(actor.ap_id, object.data),
{:ok, activity} <- ActivityPub.delete(object, false) do
{:ok, activity}
else
%{
"type" => "Undo",
"object" => %{"type" => "Announce", "object" => object_id},
- "actor" => actor,
+ "actor" => _actor,
"id" => id
} = data
) do
User.unfollow(follower, followed)
{:ok, activity}
else
- e -> :error
+ _e -> :error
end
end
User.unblock(blocker, blocked)
{:ok, activity}
else
- e -> :error
+ _e -> :error
end
end
def handle_incoming(
- %{"type" => "Block", "object" => blocked, "actor" => blocker, "id" => id} = data
+ %{"type" => "Block", "object" => blocked, "actor" => blocker, "id" => id} = _data
) do
with true <- Pleroma.Config.get([:activitypub, :accept_blocks]),
%User{local: true} = blocked = User.get_cached_by_ap_id(blocked),
User.block(blocker, blocked)
{:ok, activity}
else
- e -> :error
+ _e -> :error
end
end
%{
"type" => "Undo",
"object" => %{"type" => "Like", "object" => object_id},
- "actor" => actor,
+ "actor" => _actor,
"id" => id
} = data
) do
|> add_mention_tags
|> add_emoji_tags
|> add_attributed_to
+ |> add_likes
|> prepare_attachments
|> set_conversation
|> set_reply_to_uri
# internal -> Mastodon
# """
- def prepare_outgoing(%{"type" => "Create", "object" => %{"type" => "Note"} = object} = data) do
+ def prepare_outgoing(%{"type" => "Create", "object" => object} = data) do
object =
object
|> prepare_object
|> Map.put("attributedTo", attributedTo)
end
+ def add_likes(%{"id" => id, "like_count" => likes} = object) do
+ likes = %{
+ "id" => "#{id}/likes",
+ "first" => "#{id}/likes?page=1",
+ "type" => "OrderedCollection",
+ "totalItems" => likes
+ }
+
+ object
+ |> Map.put("likes", likes)
+ end
+
+ def add_likes(object) do
+ object
+ end
+
def prepare_attachments(object) do
attachments =
(object["attachment"] || [])
defp strip_internal_fields(object) do
object
|> Map.drop([
- "likes",
"like_count",
"announcements",
"announcement_count",
maybe_retire_websub(user.ap_id)
- # Only do this for recent activties, don't go through the whole db.
- # Only look at the last 1000 activities.
- since = (Repo.aggregate(Activity, :max, :id) || 0) - 1_000
-
q =
from(
a in Activity,
where: ^old_follower_address in a.recipients,
- where: a.id > ^since,
update: [
set: [
recipients:
def upgrade_user_from_ap_id(ap_id, async \\ true) do
with %User{local: false} = user <- User.get_by_ap_id(ap_id),
{:ok, data} <- ActivityPub.fetch_and_prepare_user_from_ap_id(ap_id) do
- data =
- data
- |> Map.put(:info, Map.merge(user.info, data[:info]))
-
already_ap = User.ap_enabled?(user)
{:ok, user} =
projects / akkoma / blobdiff