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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2021 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Web.ActivityPub.Transmogrifier.FollowHandlingTest do
   6   use Pleroma.DataCase
   7   alias Pleroma.Activity
   8   alias Pleroma.Notification
   9   alias Pleroma.Repo
  10   alias Pleroma.User
  11   alias Pleroma.Web.ActivityPub.Transmogrifier
  12   alias Pleroma.Web.ActivityPub.Utils
  13
  14   import Pleroma.Factory
  15   import Ecto.Query
  16   import Mock
  17
  18   setup_all do
  19     Tesla.Mock.mock_global(fn env -> apply(HttpRequestMock, :request, [env]) end)
  20     :ok
  21   end
  22
  23   describe "handle_incoming" do
  24     setup do: clear_config([:user, :deny_follow_blocked])
  25
  26     test "it works for osada follow request" do
  27       user = insert(:user)
  28
  29       data =
  30         File.read!("test/fixtures/osada-follow-activity.json")
  31         |> Jason.decode!()
  32         |> Map.put("object", user.ap_id)
  33
  34       {:ok, %Activity{data: data, local: false} = activity} = Transmogrifier.handle_incoming(data)
  35
  36       assert data["actor"] == "https://apfed.club/channel/indio"
  37       assert data["type"] == "Follow"
  38       assert data["id"] == "https://apfed.club/follow/9"
  39
  40       activity = Repo.get(Activity, activity.id)
  41       assert activity.data["state"] == "accept"
  42       assert User.following?(User.get_cached_by_ap_id(data["actor"]), user)
  43     end
  44
  45     test "it works for incoming follow requests" do
  46       user = insert(:user)
  47
  48       data =
  49         File.read!("test/fixtures/mastodon-follow-activity.json")
  50         |> Jason.decode!()
  51         |> Map.put("object", user.ap_id)
  52
  53       {:ok, %Activity{data: data, local: false} = activity} = Transmogrifier.handle_incoming(data)
  54
  55       assert data["actor"] == "http://mastodon.example.org/users/admin"
  56       assert data["type"] == "Follow"
  57       assert data["id"] == "http://mastodon.example.org/users/admin#follows/2"
  58
  59       activity = Repo.get(Activity, activity.id)
  60       assert activity.data["state"] == "accept"
  61       assert User.following?(User.get_cached_by_ap_id(data["actor"]), user)
  62
  63       [notification] = Notification.for_user(user)
  64       assert notification.type == "follow"
  65     end
  66
  67     test "with locked accounts, it does create a Follow, but not an Accept" do
  68       user = insert(:user, is_locked: true)
  69
  70       data =
  71         File.read!("test/fixtures/mastodon-follow-activity.json")
  72         |> Jason.decode!()
  73         |> Map.put("object", user.ap_id)
  74
  75       {:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)
  76
  77       assert data["state"] == "pending"
  78
  79       refute User.following?(User.get_cached_by_ap_id(data["actor"]), user)
  80
  81       accepts =
  82         from(
  83           a in Activity,
  84           where: fragment("?->>'type' = ?", a.data, "Accept")
  85         )
  86         |> Repo.all()
  87
  88       assert Enum.empty?(accepts)
  89
  90       [notification] = Notification.for_user(user)
  91       assert notification.type == "follow_request"
  92     end
  93
  94     test "it works for follow requests when you are already followed, creating a new accept activity" do
  95       # This is important because the remote might have the wrong idea about the
  96       # current follow status. This can lead to instance A thinking that x@A is
  97       # followed by y@B, but B thinks they are not. In this case, the follow can
  98       # never go through again because it will never get an Accept.
  99       user = insert(:user)
 100
 101       data =
 102         File.read!("test/fixtures/mastodon-follow-activity.json")
 103         |> Jason.decode!()
 104         |> Map.put("object", user.ap_id)
 105
 106       {:ok, %Activity{local: false}} = Transmogrifier.handle_incoming(data)
 107
 108       accepts =
 109         from(
 110           a in Activity,
 111           where: fragment("?->>'type' = ?", a.data, "Accept")
 112         )
 113         |> Repo.all()
 114
 115       assert length(accepts) == 1
 116
 117       data =
 118         File.read!("test/fixtures/mastodon-follow-activity.json")
 119         |> Jason.decode!()
 120         |> Map.put("id", String.replace(data["id"], "2", "3"))
 121         |> Map.put("object", user.ap_id)
 122
 123       {:ok, %Activity{local: false}} = Transmogrifier.handle_incoming(data)
 124
 125       accepts =
 126         from(
 127           a in Activity,
 128           where: fragment("?->>'type' = ?", a.data, "Accept")
 129         )
 130         |> Repo.all()
 131
 132       assert length(accepts) == 2
 133     end
 134
 135     test "it rejects incoming follow requests from blocked users when deny_follow_blocked is enabled" do
 136       clear_config([:user, :deny_follow_blocked], true)
 137
 138       user = insert(:user)
 139       {:ok, target} = User.get_or_fetch("http://mastodon.example.org/users/admin")
 140
 141       {:ok, _user_relationship} = User.block(user, target)
 142
 143       data =
 144         File.read!("test/fixtures/mastodon-follow-activity.json")
 145         |> Jason.decode!()
 146         |> Map.put("object", user.ap_id)
 147
 148       {:ok, %Activity{data: %{"id" => id}}} = Transmogrifier.handle_incoming(data)
 149
 150       %Activity{} = activity = Activity.get_by_ap_id(id)
 151
 152       assert activity.data["state"] == "reject"
 153     end
 154
 155     test "it rejects incoming follow requests if the following errors for some reason" do
 156       user = insert(:user)
 157
 158       data =
 159         File.read!("test/fixtures/mastodon-follow-activity.json")
 160         |> Jason.decode!()
 161         |> Map.put("object", user.ap_id)
 162
 163       with_mock Pleroma.User, [:passthrough], follow: fn _, _, _ -> {:error, :testing} end do
 164         {:ok, %Activity{data: %{"id" => id}}} = Transmogrifier.handle_incoming(data)
 165
 166         %Activity{} = activity = Activity.get_by_ap_id(id)
 167
 168         assert activity.data["state"] == "reject"
 169       end
 170     end
 171
 172     test "it works for incoming follow requests from hubzilla" do
 173       user = insert(:user)
 174
 175       data =
 176         File.read!("test/fixtures/hubzilla-follow-activity.json")
 177         |> Jason.decode!()
 178         |> Map.put("object", user.ap_id)
 179         |> Utils.normalize_params()
 180
 181       {:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)
 182
 183       assert data["actor"] == "https://hubzilla.example.org/channel/kaniini"
 184       assert data["type"] == "Follow"
 185       assert data["id"] == "https://hubzilla.example.org/channel/kaniini#follows/2"
 186       assert User.following?(User.get_cached_by_ap_id(data["actor"]), user)
 187     end
 188
 189     test "it works for incoming follows to locked account" do
 190       pending_follower = insert(:user, ap_id: "http://mastodon.example.org/users/admin")
 191       user = insert(:user, is_locked: true)
 192
 193       data =
 194         File.read!("test/fixtures/mastodon-follow-activity.json")
 195         |> Jason.decode!()
 196         |> Map.put("object", user.ap_id)
 197
 198       {:ok, %Activity{data: data, local: false}} = Transmogrifier.handle_incoming(data)
 199
 200       assert data["type"] == "Follow"
 201       assert data["object"] == user.ap_id
 202       assert data["state"] == "pending"
 203       assert data["actor"] == "http://mastodon.example.org/users/admin"
 204
 205       assert [^pending_follower] = User.get_follow_requests(user)
 206     end
 207   end
 208 end