1 # Pleroma: A lightweight social networking server
2 # Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
3 # SPDX-License-Identifier: AGPL-3.0-only
5 defmodule Pleroma.Web.ActivityPub.ActivityPubController do
6 use Pleroma.Web, :controller
7 alias Pleroma.{Activity, User, Object}
8 alias Pleroma.Web.ActivityPub.{ObjectView, UserView}
9 alias Pleroma.Web.ActivityPub.ActivityPub
10 alias Pleroma.Web.ActivityPub.Relay
11 alias Pleroma.Web.ActivityPub.Utils
12 alias Pleroma.Web.ActivityPub.Transmogrifier
13 alias Pleroma.Web.Federator
17 action_fallback(:errors)
19 plug(Pleroma.Web.FederatingPlug when action in [:inbox, :relay])
20 plug(:relay_active? when action in [:relay])
22 def relay_active?(conn, _) do
23 if Keyword.get(Application.get_env(:pleroma, :instance), :allow_relay) do
28 |> json(%{error: "not found"})
33 def user(conn, %{"nickname" => nickname}) do
34 with %User{} = user <- User.get_cached_by_nickname(nickname),
35 {:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
37 |> put_resp_header("content-type", "application/activity+json")
38 |> json(UserView.render("user.json", %{user: user}))
40 nil -> {:error, :not_found}
44 def object(conn, %{"uuid" => uuid}) do
45 with ap_id <- o_status_url(conn, :object, uuid),
46 %Object{} = object <- Object.get_cached_by_ap_id(ap_id),
47 {_, true} <- {:public?, ActivityPub.is_public?(object)} do
49 |> put_resp_header("content-type", "application/activity+json")
50 |> json(ObjectView.render("object.json", %{object: object}))
57 def following(conn, %{"nickname" => nickname, "page" => page}) do
58 with %User{} = user <- User.get_cached_by_nickname(nickname),
59 {:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
60 {page, _} = Integer.parse(page)
63 |> put_resp_header("content-type", "application/activity+json")
64 |> json(UserView.render("following.json", %{user: user, page: page}))
68 def following(conn, %{"nickname" => nickname}) do
69 with %User{} = user <- User.get_cached_by_nickname(nickname),
70 {:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
72 |> put_resp_header("content-type", "application/activity+json")
73 |> json(UserView.render("following.json", %{user: user}))
77 def followers(conn, %{"nickname" => nickname, "page" => page}) do
78 with %User{} = user <- User.get_cached_by_nickname(nickname),
79 {:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
80 {page, _} = Integer.parse(page)
83 |> put_resp_header("content-type", "application/activity+json")
84 |> json(UserView.render("followers.json", %{user: user, page: page}))
88 def followers(conn, %{"nickname" => nickname}) do
89 with %User{} = user <- User.get_cached_by_nickname(nickname),
90 {:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
92 |> put_resp_header("content-type", "application/activity+json")
93 |> json(UserView.render("followers.json", %{user: user}))
97 def outbox(conn, %{"nickname" => nickname} = params) do
98 with %User{} = user <- User.get_cached_by_nickname(nickname),
99 {:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
101 |> put_resp_header("content-type", "application/activity+json")
102 |> json(UserView.render("outbox.json", %{user: user, max_id: params["max_id"]}))
106 def inbox(%{assigns: %{valid_signature: true}} = conn, %{"nickname" => nickname} = params) do
107 with %User{} = user <- User.get_cached_by_nickname(nickname),
108 true <- Utils.recipient_in_message(user.ap_id, params),
109 params <- Utils.maybe_splice_recipient(user.ap_id, params) do
110 Federator.enqueue(:incoming_ap_doc, params)
115 def inbox(%{assigns: %{valid_signature: true}} = conn, params) do
116 Federator.enqueue(:incoming_ap_doc, params)
120 # only accept relayed Creates
121 def inbox(conn, %{"type" => "Create"} = params) do
123 "Signature missing or not from author, relayed Create message, fetching object from source"
126 ActivityPub.fetch_object_from_id(params["object"]["id"])
131 def inbox(conn, params) do
132 headers = Enum.into(conn.req_headers, %{})
134 if String.contains?(headers["signature"], params["actor"]) do
136 "Signature validation error for: #{params["actor"]}, make sure you are forwarding the HTTP Host header!"
139 Logger.info(inspect(conn.req_headers))
145 def relay(conn, _params) do
146 with %User{} = user <- Relay.get_actor(),
147 {:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
149 |> put_resp_header("content-type", "application/activity+json")
150 |> json(UserView.render("user.json", %{user: user}))
152 nil -> {:error, :not_found}
156 def read_inbox(%{assigns: %{user: user}} = conn, %{"nickname" => nickname} = params) do
157 if nickname == user.nickname do
159 |> put_resp_header("content-type", "application/activity+json")
160 |> json(UserView.render("inbox.json", %{user: user, max_id: params["max_id"]}))
163 |> put_status(:forbidden)
164 |> json("can't read inbox of #{nickname} as #{user.nickname}")
168 def handle_user_activity(user, %{"type" => "Create"} = params) do
171 |> Map.merge(Map.take(params, ["to", "cc"]))
172 |> Map.put("attributedTo", user.ap_id())
173 |> Transmogrifier.fix_object()
175 ActivityPub.create(%{
178 context: object["context"],
180 additional: Map.take(params, ["cc"])
184 def handle_user_activity(user, %{"type" => "Delete"} = params) do
185 with %Object{} = object <- Object.normalize(params["object"]),
186 true <- user.info.is_moderator || user.ap_id == object.data["actor"],
187 {:ok, delete} <- ActivityPub.delete(object) do
190 _ -> {:error, "Can't delete object"}
194 def handle_user_activity(_, _) do
195 {:error, "Unhandled activity type"}
199 %{assigns: %{user: user}} = conn,
200 %{"nickname" => nickname} = params
202 if nickname == user.nickname do
208 |> Map.put("actor", actor)
209 |> Transmogrifier.fix_addressing()
211 with {:ok, %Activity{} = activity} <- handle_user_activity(user, params) do
213 |> put_status(:created)
214 |> put_resp_header("location", activity.data["id"])
215 |> json(activity.data)
219 |> put_status(:bad_request)
224 |> put_status(:forbidden)
225 |> json("can't update outbox of #{nickname} as #{user.nickname}")
229 def errors(conn, {:error, :not_found}) do
235 def errors(conn, _e) do