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 activity(conn, %{"uuid" => uuid}) do
58 with ap_id <- o_status_url(conn, :activity, uuid),
59 %Activity{} = activity <- Activity.normalize(ap_id),
60 {_, true} <- {:public?, ActivityPub.is_public?(activity)} do
62 |> put_resp_header("content-type", "application/activity+json")
63 |> json(ObjectView.render("object.json", %{object: activity}))
70 def following(conn, %{"nickname" => nickname, "page" => page}) do
71 with %User{} = user <- User.get_cached_by_nickname(nickname),
72 {:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
73 {page, _} = Integer.parse(page)
76 |> put_resp_header("content-type", "application/activity+json")
77 |> json(UserView.render("following.json", %{user: user, page: page}))
81 def following(conn, %{"nickname" => nickname}) do
82 with %User{} = user <- User.get_cached_by_nickname(nickname),
83 {:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
85 |> put_resp_header("content-type", "application/activity+json")
86 |> json(UserView.render("following.json", %{user: user}))
90 def followers(conn, %{"nickname" => nickname, "page" => page}) do
91 with %User{} = user <- User.get_cached_by_nickname(nickname),
92 {:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
93 {page, _} = Integer.parse(page)
96 |> put_resp_header("content-type", "application/activity+json")
97 |> json(UserView.render("followers.json", %{user: user, page: page}))
101 def followers(conn, %{"nickname" => nickname}) do
102 with %User{} = user <- User.get_cached_by_nickname(nickname),
103 {:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
105 |> put_resp_header("content-type", "application/activity+json")
106 |> json(UserView.render("followers.json", %{user: user}))
110 def outbox(conn, %{"nickname" => nickname} = params) do
111 with %User{} = user <- User.get_cached_by_nickname(nickname),
112 {:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
114 |> put_resp_header("content-type", "application/activity+json")
115 |> json(UserView.render("outbox.json", %{user: user, max_id: params["max_id"]}))
119 def inbox(%{assigns: %{valid_signature: true}} = conn, %{"nickname" => nickname} = params) do
120 with %User{} = user <- User.get_cached_by_nickname(nickname),
121 true <- Utils.recipient_in_message(user.ap_id, params),
122 params <- Utils.maybe_splice_recipient(user.ap_id, params) do
123 Federator.enqueue(:incoming_ap_doc, params)
128 def inbox(%{assigns: %{valid_signature: true}} = conn, params) do
129 Federator.enqueue(:incoming_ap_doc, params)
133 # only accept relayed Creates
134 def inbox(conn, %{"type" => "Create"} = params) do
136 "Signature missing or not from author, relayed Create message, fetching object from source"
139 ActivityPub.fetch_object_from_id(params["object"]["id"])
144 def inbox(conn, params) do
145 headers = Enum.into(conn.req_headers, %{})
147 if String.contains?(headers["signature"], params["actor"]) do
149 "Signature validation error for: #{params["actor"]}, make sure you are forwarding the HTTP Host header!"
152 Logger.info(inspect(conn.req_headers))
158 def relay(conn, _params) do
159 with %User{} = user <- Relay.get_actor(),
160 {:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
162 |> put_resp_header("content-type", "application/activity+json")
163 |> json(UserView.render("user.json", %{user: user}))
165 nil -> {:error, :not_found}
169 def read_inbox(%{assigns: %{user: user}} = conn, %{"nickname" => nickname} = params) do
170 if nickname == user.nickname do
172 |> put_resp_header("content-type", "application/activity+json")
173 |> json(UserView.render("inbox.json", %{user: user, max_id: params["max_id"]}))
176 |> put_status(:forbidden)
177 |> json("can't read inbox of #{nickname} as #{user.nickname}")
181 def handle_user_activity(user, %{"type" => "Create"} = params) do
184 |> Map.merge(Map.take(params, ["to", "cc"]))
185 |> Map.put("attributedTo", user.ap_id())
186 |> Transmogrifier.fix_object()
188 ActivityPub.create(%{
191 context: object["context"],
193 additional: Map.take(params, ["cc"])
197 def handle_user_activity(user, %{"type" => "Delete"} = params) do
198 with %Object{} = object <- Object.normalize(params["object"]),
199 true <- user.info.is_moderator || user.ap_id == object.data["actor"],
200 {:ok, delete} <- ActivityPub.delete(object) do
203 _ -> {:error, "Can't delete object"}
207 def handle_user_activity(_, _) do
208 {:error, "Unhandled activity type"}
212 %{assigns: %{user: user}} = conn,
213 %{"nickname" => nickname} = params
215 if nickname == user.nickname do
221 |> Map.put("actor", actor)
222 |> Transmogrifier.fix_addressing()
224 with {:ok, %Activity{} = activity} <- handle_user_activity(user, params) do
226 |> put_status(:created)
227 |> put_resp_header("location", activity.data["id"])
228 |> json(activity.data)
232 |> put_status(:bad_request)
237 |> put_status(:forbidden)
238 |> json("can't update outbox of #{nickname} as #{user.nickname}")
242 def errors(conn, {:error, :not_found}) do
248 def errors(conn, _e) do