+# 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.User
- alias Pleroma.Object
- alias Pleroma.Object.{Containment, Fetcher}
alias Pleroma.Activity
+ alias Pleroma.Object
+ alias Pleroma.Object.Containment
alias Pleroma.Repo
+ alias Pleroma.User
alias Pleroma.Web.ActivityPub.ActivityPub
alias Pleroma.Web.ActivityPub.Utils
+ alias Pleroma.Web.ActivityPub.Visibility
import Ecto.Query
def fix_object(object) do
object
|> fix_actor
- |> fix_attachments
|> fix_url
+ |> fix_attachments
|> fix_context
|> fix_in_reply_to
|> fix_emoji
|> fix_content_map
|> fix_likes
|> fix_addressing
+ |> fix_summary
+ end
+
+ def fix_summary(%{"summary" => nil} = object) do
+ object
+ |> Map.put("summary", "")
+ end
+
+ def fix_summary(%{"summary" => _} = object) do
+ # summary is present, nothing to do
+ object
+ end
+
+ def fix_summary(object) do
+ object
+ |> Map.put("summary", "")
end
def fix_addressing_list(map, field) do
- if is_binary(map[field]) do
- map
- |> Map.put(field, [map[field]])
+ cond do
+ is_binary(map[field]) ->
+ Map.put(map, field, [map[field]])
+
+ is_nil(map[field]) ->
+ Map.put(map, field, [])
+
+ true ->
+ map
+ end
+ end
+
+ 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
+
+ # if as:Public is addressed, then make sure the followers collection is also addressed
+ # so that the activities will be delivered to local users.
+ def fix_implicit_addressing(%{"to" => to, "cc" => cc} = object, followers_collection) do
+ recipients = to ++ cc
+
+ if followers_collection not in recipients do
+ cond do
+ "https://www.w3.org/ns/activitystreams#Public" in cc ->
+ to = to ++ [followers_collection]
+ Map.put(object, "to", to)
+
+ "https://www.w3.org/ns/activitystreams#Public" in to ->
+ cc = cc ++ [followers_collection]
+ Map.put(object, "cc", cc)
+
+ true ->
+ object
+ end
else
- map
+ object
end
end
- def fix_addressing(map) do
- map
+ def fix_implicit_addressing(object, _), do: object
+
+ def fix_addressing(object) do
+ {:ok, %User{} = user} = User.get_or_fetch_by_ap_id(object["actor"])
+ followers_collection = User.ap_followers(user)
+
+ object
|> fix_addressing_list("to")
|> fix_addressing_list("cc")
|> fix_addressing_list("bto")
|> fix_addressing_list("bcc")
+ |> fix_explicit_addressing
+ |> fix_implicit_addressing(followers_collection)
end
def fix_actor(%{"attributedTo" => actor} = object) do
|> Map.put("actor", Containment.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 get_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
+ with %Activity{} = _activity <-
+ 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)
- |> Map.put("inReplyToStatusId", activity.id)
|> Map.put("conversation", replied_object.data["context"] || object["conversation"])
|> Map.put("context", replied_object.data["context"] || object["conversation"])
else
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
+
+ # Flag objects are placed ahead of the ID check because Mastodon 2.8 and earlier send them
+ # with nil ID.
+ def handle_incoming(%{"type" => "Flag", "object" => objects, "actor" => actor} = data) do
+ with context <- data["context"] || Utils.generate_context_id(),
+ content <- data["content"] || "",
+ %User{} = actor <- User.get_cached_by_ap_id(actor),
+
+ # Reduce the object list to find the reported user.
+ %User{} = account <-
+ Enum.reduce_while(objects, nil, fn ap_id, _ ->
+ with %User{} = user <- User.get_cached_by_ap_id(ap_id) do
+ {:halt, user}
+ else
+ _ -> {:cont, nil}
+ end
+ end),
+
+ # Remove the reported user from the object list.
+ statuses <- Enum.filter(objects, fn ap_id -> ap_id != account.ap_id end) do
+ params = %{
+ actor: actor,
+ context: context,
+ account: account,
+ statuses: statuses,
+ content: content,
+ additional: %{
+ "cc" => [account.ap_id]
+ }
+ }
+
+ ActivityPub.flag(params)
+ 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"]),
- %User{} = user <- User.get_or_fetch_by_ap_id(data["actor"]) do
+ with nil <- Activity.get_create_by_object_ap_id(object["id"]),
+ {:ok, %User{} = user} <- User.get_or_fetch_by_ap_id(data["actor"]) do
object = fix_object(data["object"])
params = %{
additional:
Map.take(data, [
"cc",
+ "directMessage",
"id"
])
}
%{"type" => "Follow", "object" => followed, "actor" => follower, "id" => id} = data
) do
with %User{local: true} = followed <- User.get_cached_by_ap_id(followed),
- %User{} = follower <- User.get_or_fetch_by_ap_id(follower),
+ {:ok, %User{} = follower} <- User.get_or_fetch_by_ap_id(follower),
{:ok, activity} <- ActivityPub.follow(follower, followed, id, false) do
- if not User.locked?(followed) do
+ with deny_follow_blocked <- Pleroma.Config.get([:user, :deny_follow_blocked]),
+ {:user_blocked, false} <-
+ {:user_blocked, User.blocks?(followed, follower) && deny_follow_blocked},
+ {:user_locked, false} <- {:user_locked, User.locked?(followed)},
+ {:follow, {:ok, follower}} <- {:follow, User.follow(follower, followed)} do
ActivityPub.accept(%{
to: [follower.ap_id],
- actor: followed.ap_id,
+ actor: followed,
object: data,
local: true
})
-
- User.follow(follower, followed)
+ else
+ {:user_blocked, true} ->
+ {:ok, _} = Utils.update_follow_state(activity, "reject")
+
+ ActivityPub.reject(%{
+ to: [follower.ap_id],
+ actor: followed,
+ object: data,
+ local: true
+ })
+
+ {:follow, {:error, _}} ->
+ {:ok, _} = Utils.update_follow_state(activity, "reject")
+
+ ActivityPub.reject(%{
+ to: [follower.ap_id],
+ actor: followed,
+ object: data,
+ local: true
+ })
+
+ {:user_locked, true} ->
+ :noop
end
{:ok, activity}
else
- _e -> :error
- 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}
+ _e ->
+ :error
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 <- Containment.get_actor(data),
- %User{} = followed <- User.get_or_fetch_by_ap_id(actor),
+ {:ok, %User{} = followed} <- User.get_or_fetch_by_ap_id(actor),
{:ok, follow_activity} <- get_follow_activity(follow_object, followed),
{:ok, follow_activity} <- Utils.update_follow_state(follow_activity, "accept"),
%User{local: true} = follower <- User.get_cached_by_ap_id(follow_activity.data["actor"]),
ActivityPub.accept(%{
to: follow_activity.data["to"],
type: "Accept",
- actor: followed.ap_id,
+ actor: followed,
object: follow_activity.data["id"],
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 <- Containment.get_actor(data),
- %User{} = followed <- User.get_or_fetch_by_ap_id(actor),
+ {:ok, %User{} = followed} <- User.get_or_fetch_by_ap_id(actor),
{:ok, follow_activity} <- get_follow_activity(follow_object, followed),
{: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",
- actor: followed.ap_id,
+ type: "Reject",
+ actor: followed,
object: follow_activity.data["id"],
local: false
}) do
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 <- Containment.get_actor(data),
- %User{} = actor <- User.get_or_fetch_by_ap_id(actor),
+ {:ok, %User{} = actor} <- User.get_or_fetch_by_ap_id(actor),
{:ok, object} <- get_obj_helper(object_id),
{:ok, activity, _object} <- ActivityPub.like(actor, object, id, false) do
{:ok, activity}
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 <- Containment.get_actor(data),
- %User{} = actor <- User.get_or_fetch_by_ap_id(actor),
+ {:ok, %User{} = actor} <- User.get_or_fetch_by_ap_id(actor),
{:ok, object} <- get_obj_helper(object_id),
- {:ok, activity, _object} <- ActivityPub.announce(actor, object, id, false) do
+ public <- Visibility.is_public?(data),
+ {:ok, activity, _object} <- ActivityPub.announce(actor, object, id, false, public) do
{:ok, activity}
else
_e -> :error
data
)
when object_type in ["Person", "Application", "Service", "Organization"] do
- with %User{ap_id: ^actor_id} = actor <- User.get_by_ap_id(object["id"]) do
+ with %User{ap_id: ^actor_id} = actor <- User.get_cached_by_ap_id(object["id"]) do
{:ok, new_user_data} = ActivityPub.user_data_from_user_object(object)
banner = new_user_data[:info]["banner"]
object_id = Utils.get_ap_id(object_id)
with actor <- Containment.get_actor(data),
- %User{} = actor <- User.get_or_fetch_by_ap_id(actor),
+ {:ok, %User{} = actor} <- User.get_or_fetch_by_ap_id(actor),
{:ok, object} <- get_obj_helper(object_id),
:ok <- Containment.contain_origin(actor.ap_id, object.data),
{:ok, activity} <- ActivityPub.delete(object, false) do
%{
"type" => "Undo",
"object" => %{"type" => "Announce", "object" => object_id},
- "actor" => actor,
+ "actor" => _actor,
"id" => id
} = data
) do
with actor <- Containment.get_actor(data),
- %User{} = actor <- User.get_or_fetch_by_ap_id(actor),
+ {:ok, %User{} = actor} <- User.get_or_fetch_by_ap_id(actor),
{:ok, object} <- get_obj_helper(object_id),
{:ok, activity, _} <- ActivityPub.unannounce(actor, object, id, false) do
{:ok, activity}
} = _data
) do
with %User{local: true} = followed <- User.get_cached_by_ap_id(followed),
- %User{} = follower <- User.get_or_fetch_by_ap_id(follower),
+ {:ok, %User{} = follower} <- User.get_or_fetch_by_ap_id(follower),
{:ok, activity} <- ActivityPub.unfollow(follower, followed, id, false) do
User.unfollow(follower, followed)
{:ok, activity}
else
- e -> :error
+ _e -> :error
end
end
) do
with true <- Pleroma.Config.get([:activitypub, :accept_blocks]),
%User{local: true} = blocked <- User.get_cached_by_ap_id(blocked),
- %User{} = blocker <- User.get_or_fetch_by_ap_id(blocker),
+ {:ok, %User{} = blocker} <- User.get_or_fetch_by_ap_id(blocker),
{:ok, activity} <- ActivityPub.unblock(blocker, blocked, id, false) do
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{} = blocker = User.get_or_fetch_by_ap_id(blocker),
+ {:ok, %User{} = blocker} = User.get_or_fetch_by_ap_id(blocker),
{:ok, activity} <- ActivityPub.block(blocker, blocked, id, false) do
User.unfollow(blocker, 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
with actor <- Containment.get_actor(data),
- %User{} = actor <- User.get_or_fetch_by_ap_id(actor),
+ {:ok, %User{} = actor} <- User.get_or_fetch_by_ap_id(actor),
{:ok, object} <- get_obj_helper(object_id),
{:ok, activity, _, _} <- ActivityPub.unlike(actor, object, id, false) do
{:ok, activity}
if object = Object.normalize(id), do: {:ok, object}, else: nil
end
- def set_reply_to_uri(%{"inReplyTo" => inReplyTo} = object) do
- with false <- String.starts_with?(inReplyTo, "http"),
- {:ok, %{data: replied_to_object}} <- get_obj_helper(inReplyTo) do
- Map.put(object, "inReplyTo", replied_to_object["external_url"] || inReplyTo)
+ def set_reply_to_uri(%{"inReplyTo" => in_reply_to} = object) when is_binary(in_reply_to) do
+ with false <- String.starts_with?(in_reply_to, "http"),
+ {:ok, %{data: replied_to_object}} <- get_obj_helper(in_reply_to) do
+ Map.put(object, "inReplyTo", replied_to_object["external_url"] || in_reply_to)
else
_e -> object
end
|> add_mention_tags
|> add_emoji_tags
|> add_attributed_to
+ |> add_likes
|> prepare_attachments
|> set_conversation
|> set_reply_to_uri
def prepare_outgoing(%{"type" => _type} = data) do
data =
data
+ |> strip_internal_fields
|> maybe_fix_object_url
|> Map.merge(Utils.make_json_ld_header())
def add_hashtags(object) do
tags =
(object["tag"] || [])
- |> Enum.map(fn tag ->
- %{
- "href" => Pleroma.Web.Endpoint.url() <> "/tags/#{tag}",
- "name" => "##{tag}",
- "type" => "Hashtag"
- }
+ |> Enum.map(fn
+ # Expand internal representation tags into AS2 tags.
+ tag when is_binary(tag) ->
+ %{
+ "href" => Pleroma.Web.Endpoint.url() <> "/tags/#{tag}",
+ "name" => "##{tag}",
+ "type" => "Hashtag"
+ }
+
+ # Do not process tags which are already AS2 tag objects.
+ tag when is_map(tag) ->
+ tag
end)
object
|> Map.put("tag", tags ++ mentions)
end
+ def add_emoji_tags(%User{info: %{"emoji" => _emoji} = user_info} = object) do
+ user_info = add_emoji_tags(user_info)
+
+ object
+ |> Map.put(:info, user_info)
+ end
+
# TODO: we should probably send mtime instead of unix epoch time for updated
- def add_emoji_tags(object) do
+ def add_emoji_tags(%{"emoji" => emoji} = object) do
tags = object["tag"] || []
- emoji = object["emoji"] || []
out =
emoji
|> Map.put("tag", tags ++ out)
end
+ def add_emoji_tags(object) do
+ object
+ end
+
def set_conversation(object) do
Map.put(object, "conversation", object["context"])
end
end
def add_attributed_to(object) do
- attributedTo = object["attributedTo"] || object["actor"]
+ attributed_to = object["attributedTo"] || object["actor"]
+
+ object
+ |> Map.put("attributedTo", attributed_to)
+ 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("attributedTo", attributedTo)
+ |> Map.put("likes", likes)
+ end
+
+ def add_likes(object) do
+ object
end
def prepare_attachments(object) do
defp strip_internal_fields(object) do
object
|> Map.drop([
- "likes",
"like_count",
"announcements",
"announcement_count",
"emoji",
- "context_id"
+ "context_id",
+ "deleted_activity_id"
])
end
defp strip_internal_tags(object), do: object
- defp user_upgrade_task(user) do
- old_follower_address = User.ap_followers(user)
+ def perform(:user_upgrade, user) do
+ # we pass a fake user so that the followers collection is stripped away
+ old_follower_address = User.ap_followers(%User{nickname: user.nickname})
q =
from(
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:
Repo.update_all(q, [])
end
- 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
- already_ap = User.ap_enabled?(user)
-
- {:ok, user} =
- User.upgrade_changeset(user, data)
- |> Repo.update()
-
- if !already_ap do
- # This could potentially take a long time, do it in the background
- if async do
- Task.start(fn ->
- user_upgrade_task(user)
- end)
- else
- user_upgrade_task(user)
- end
+ def upgrade_user_from_ap_id(ap_id) do
+ with %User{local: false} = user <- User.get_cached_by_ap_id(ap_id),
+ {:ok, data} <- ActivityPub.fetch_and_prepare_user_from_ap_id(ap_id),
+ already_ap <- User.ap_enabled?(user),
+ {:ok, user} <- user |> User.upgrade_changeset(data) |> User.update_and_set_cache() do
+ unless already_ap do
+ PleromaJobQueue.enqueue(:transmogrifier, __MODULE__, [:user_upgrade, user])
end
{:ok, user}
else
+ %User{} = user -> {:ok, user}
e -> e
end
end
projects / akkoma / blobdiff