Merge branch 'activitypub-c2s' into 'develop'

Activitypub c2s

See merge request pleroma/pleroma!608

lib/pleroma/web/activity_pub/activity_pub_controller.ex

@@ -4,11 +4,12 @@
 
 defmodule Pleroma.Web.ActivityPub.ActivityPubController do
   use Pleroma.Web, :controller
-  alias Pleroma.{User, Object}
+  alias Pleroma.{Activity, User, Object}
   alias Pleroma.Web.ActivityPub.{ObjectView, UserView}
   alias Pleroma.Web.ActivityPub.ActivityPub
   alias Pleroma.Web.ActivityPub.Relay
   alias Pleroma.Web.ActivityPub.Utils
+  alias Pleroma.Web.ActivityPub.Transmogrifier
   alias Pleroma.Web.Federator
 
   require Logger
@@ -93,19 +94,15 @@ def followers(conn, %{"nickname" => nickname}) do
     end
   end
 
-  def outbox(conn, %{"nickname" => nickname, "max_id" => max_id}) do
+  def outbox(conn, %{"nickname" => nickname} = params) do
     with %User{} = user <- User.get_cached_by_nickname(nickname),
          {:ok, user} <- Pleroma.Web.WebFinger.ensure_keys_present(user) do
       conn
       |> put_resp_header("content-type", "application/activity+json")
-      |> json(UserView.render("outbox.json", %{user: user, max_id: max_id}))
+      |> json(UserView.render("outbox.json", %{user: user, max_id: params["max_id"]}))
     end
   end
 
-  def outbox(conn, %{"nickname" => nickname}) do
-    outbox(conn, %{"nickname" => nickname, "max_id" => nil})
-  end
-
   def inbox(%{assigns: %{valid_signature: true}} = conn, %{"nickname" => nickname} = params) do
     with %User{} = user <- User.get_cached_by_nickname(nickname),
          true <- Utils.recipient_in_message(user.ap_id, params),
@@ -156,6 +153,57 @@ def relay(conn, _params) do
     end
   end
 
+  def read_inbox(%{assigns: %{user: user}} = conn, %{"nickname" => nickname} = params) do
+    if nickname == user.nickname do
+      conn
+      |> put_resp_header("content-type", "application/activity+json")
+      |> json(UserView.render("inbox.json", %{user: user, max_id: params["max_id"]}))
+    else
+      conn
+      |> put_status(:forbidden)
+      |> json("can't read inbox of #{nickname} as #{user.nickname}")
+    end
+  end
+
+  def update_outbox(
+        %{assigns: %{user: user}} = conn,
+        %{"nickname" => nickname, "type" => "Create"} = params
+      ) do
+    if nickname == user.nickname do
+      actor = user.ap_id()
+
+      params =
+        params
+        |> Map.drop(["id"])
+        |> Map.put("actor", actor)
+        |> Transmogrifier.fix_addressing()
+
+      object =
+        params["object"]
+        |> Map.merge(Map.take(params, ["to", "cc"]))
+        |> Map.put("attributedTo", actor)
+        |> Transmogrifier.fix_object()
+
+      with {:ok, %Activity{} = activity} <-
+             ActivityPub.create(%{
+               to: params["to"],
+               actor: user,
+               context: object["context"],
+               object: object,
+               additional: Map.take(params, ["cc"])
+             }) do
+        conn
+        |> put_status(:created)
+        |> put_resp_header("location", activity.data["id"])
+        |> json(activity.data)
+      end
+    else
+      conn
+      |> put_status(:forbidden)
+      |> json("can't update outbox of #{nickname} as #{user.nickname}")
+    end
+  end
+
   def errors(conn, {:error, :not_found}) do
     conn
     |> put_status(404)

lib/pleroma/web/activity_pub/views/user_view.ex

@@ -176,6 +176,53 @@ def render("outbox.json", %{user: user, max_id: max_qid}) do
     end
   end
 
+  def render("inbox.json", %{user: user, max_id: max_qid}) do
+    params = %{
+      "limit" => "10"
+    }
+
+    params =
+      if max_qid != nil do
+        Map.put(params, "max_id", max_qid)
+      else
+        params
+      end
+
+    activities = ActivityPub.fetch_activities([user.ap_id | user.following], params)
+
+    min_id = Enum.at(Enum.reverse(activities), 0).id
+    max_id = Enum.at(activities, 0).id
+
+    collection =
+      Enum.map(activities, fn act ->
+        {:ok, data} = Transmogrifier.prepare_outgoing(act.data)
+        data
+      end)
+
+    iri = "#{user.ap_id}/inbox"
+
+    page = %{
+      "id" => "#{iri}?max_id=#{max_id}",
+      "type" => "OrderedCollectionPage",
+      "partOf" => iri,
+      "totalItems" => -1,
+      "orderedItems" => collection,
+      "next" => "#{iri}?max_id=#{min_id - 1}"
+    }
+
+    if max_qid == nil do
+      %{
+        "id" => iri,
+        "type" => "OrderedCollection",
+        "totalItems" => -1,
+        "first" => page
+      }
+      |> Map.merge(Utils.make_json_ld_header())
+    else
+      page |> Map.merge(Utils.make_json_ld_header())
+    end
+  end
+
   def collection(collection, iri, page, show_items \\ true, total \\ nil) do
     offset = (page - 1) * 10
     items = Enum.slice(collection, offset, 10)

lib/pleroma/web/router.ex

@@ -412,6 +412,27 @@ defmodule Pleroma.Web.Router do
     get("/users/:nickname/outbox", ActivityPubController, :outbox)
   end
 
+  pipeline :activitypub_client do
+    plug(:accepts, ["activity+json"])
+    plug(:fetch_session)
+    plug(Pleroma.Plugs.OAuthPlug)
+    plug(Pleroma.Plugs.BasicAuthDecoderPlug)
+    plug(Pleroma.Plugs.UserFetcherPlug)
+    plug(Pleroma.Plugs.SessionAuthenticationPlug)
+    plug(Pleroma.Plugs.LegacyAuthenticationPlug)
+    plug(Pleroma.Plugs.AuthenticationPlug)
+    plug(Pleroma.Plugs.UserEnabledPlug)
+    plug(Pleroma.Plugs.SetUserSessionIdPlug)
+    plug(Pleroma.Plugs.EnsureUserKeyPlug)
+  end
+
+  scope "/", Pleroma.Web.ActivityPub do
+    pipe_through([:activitypub_client])
+
+    get("/users/:nickname/inbox", ActivityPubController, :read_inbox)
+    post("/users/:nickname/outbox", ActivityPubController, :update_outbox)
+  end
+
   scope "/relay", Pleroma.Web.ActivityPub do
     pipe_through(:ap_relay)
     get("/", ActivityPubController, :relay)

test/fixtures/activitypub-client-post-activity.json

@@ -0,0 +1,9 @@
+{
+  "@context": ["https://www.w3.org/ns/activitystreams", {"@language": "en-GB"}],
+  "type": "Create",
+  "object": {
+    "type": "Note",
+    "content": "It's a note"
+  },
+  "to": ["https://www.w3.org/ns/activitystreams#Public"]
+}

test/web/activity_pub/activity_pub_controller_test.exs

@@ -112,6 +112,32 @@ test "it inserts an incoming activity into the database", %{conn: conn} do
       :timer.sleep(500)
       assert Activity.get_by_ap_id(data["id"])
     end
+
+    test "it rejects reads from other users", %{conn: conn} do
+      user = insert(:user)
+      otheruser = insert(:user)
+
+      conn =
+        conn
+        |> assign(:user, otheruser)
+        |> put_req_header("accept", "application/activity+json")
+        |> get("/users/#{user.nickname}/inbox")
+
+      assert json_response(conn, 403)
+    end
+
+    test "it returns a note activity in a collection", %{conn: conn} do
+      note_activity = insert(:direct_note_activity)
+      user = User.get_cached_by_ap_id(hd(note_activity.data["to"]))
+
+      conn =
+        conn
+        |> assign(:user, user)
+        |> put_req_header("accept", "application/activity+json")
+        |> get("/users/#{user.nickname}/inbox")
+
+      assert response(conn, 200) =~ note_activity.data["object"]["content"]
+    end
   end
 
   describe "/users/:nickname/outbox" do
@@ -138,6 +164,34 @@ test "it returns an announce activity in a collection", %{conn: conn} do
 
       assert response(conn, 200) =~ announce_activity.data["object"]
     end
+
+    test "it rejects posts from other users", %{conn: conn} do
+      data = File.read!("test/fixtures/activitypub-client-post-activity.json") |> Poison.decode!()
+      user = insert(:user)
+      otheruser = insert(:user)
+
+      conn =
+        conn
+        |> assign(:user, otheruser)
+        |> put_req_header("content-type", "application/activity+json")
+        |> post("/users/#{user.nickname}/outbox", data)
+
+      assert json_response(conn, 403)
+    end
+
+    test "it inserts an incoming activity into the database", %{conn: conn} do
+      data = File.read!("test/fixtures/activitypub-client-post-activity.json") |> Poison.decode!()
+      user = insert(:user)
+
+      conn =
+        conn
+        |> assign(:user, user)
+        |> put_req_header("content-type", "application/activity+json")
+        |> post("/users/#{user.nickname}/outbox", data)
+
+      result = json_response(conn, 201)
+      assert Activity.get_by_ap_id(result["id"])
+    end
   end
 
   describe "/users/:nickname/followers" do