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   1 # Pleroma: A lightweight social networking server
   2 # Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
   3 # SPDX-License-Identifier: AGPL-3.0-only
   4
   5 defmodule Pleroma.Object.FetcherTest do
   6   use Pleroma.DataCase
   7
   8   alias Pleroma.Activity
   9   alias Pleroma.Object
  10   alias Pleroma.Object.Fetcher
  11   import Tesla.Mock
  12   import Mock
  13
  14   setup do
  15     mock(fn
  16       %{method: :get, url: "https://mastodon.example.org/users/userisgone"} ->
  17         %Tesla.Env{status: 410}
  18
  19       %{method: :get, url: "https://mastodon.example.org/users/userisgone404"} ->
  20         %Tesla.Env{status: 404}
  21
  22       env ->
  23         apply(HttpRequestMock, :request, [env])
  24     end)
  25
  26     :ok
  27   end
  28
  29   describe "error cases" do
  30     setup do
  31       mock(fn
  32         %{method: :get, url: "https://social.sakamoto.gq/notice/9wTkLEnuq47B25EehM"} ->
  33           %Tesla.Env{
  34             status: 200,
  35             body: File.read!("test/fixtures/fetch_mocks/9wTkLEnuq47B25EehM.json")
  36           }
  37
  38         %{method: :get, url: "https://social.sakamoto.gq/users/eal"} ->
  39           %Tesla.Env{
  40             status: 200,
  41             body: File.read!("test/fixtures/fetch_mocks/eal.json")
  42           }
  43
  44         %{method: :get, url: "https://busshi.moe/users/tuxcrafting/statuses/104410921027210069"} ->
  45           %Tesla.Env{
  46             status: 200,
  47             body: File.read!("test/fixtures/fetch_mocks/104410921027210069.json")
  48           }
  49
  50         %{method: :get, url: "https://busshi.moe/users/tuxcrafting"} ->
  51           %Tesla.Env{
  52             status: 500
  53           }
  54       end)
  55
  56       :ok
  57     end
  58
  59     @tag capture_log: true
  60     test "it works when fetching the OP actor errors out" do
  61       # Here we simulate a case where the author of the OP can't be read
  62       assert {:ok, _} =
  63                Fetcher.fetch_object_from_id(
  64                  "https://social.sakamoto.gq/notice/9wTkLEnuq47B25EehM"
  65                )
  66     end
  67   end
  68
  69   describe "max thread distance restriction" do
  70     @ap_id "http://mastodon.example.org/@admin/99541947525187367"
  71     setup do: clear_config([:instance, :federation_incoming_replies_max_depth])
  72
  73     test "it returns thread depth exceeded error if thread depth is exceeded" do
  74       Pleroma.Config.put([:instance, :federation_incoming_replies_max_depth], 0)
  75
  76       assert {:error, "Max thread distance exceeded."} =
  77                Fetcher.fetch_object_from_id(@ap_id, depth: 1)
  78     end
  79
  80     test "it fetches object if max thread depth is restricted to 0 and depth is not specified" do
  81       Pleroma.Config.put([:instance, :federation_incoming_replies_max_depth], 0)
  82
  83       assert {:ok, _} = Fetcher.fetch_object_from_id(@ap_id)
  84     end
  85
  86     test "it fetches object if requested depth does not exceed max thread depth" do
  87       Pleroma.Config.put([:instance, :federation_incoming_replies_max_depth], 10)
  88
  89       assert {:ok, _} = Fetcher.fetch_object_from_id(@ap_id, depth: 10)
  90     end
  91   end
  92
  93   describe "actor origin containment" do
  94     test "it rejects objects with a bogus origin" do
  95       {:error, _} = Fetcher.fetch_object_from_id("https://info.pleroma.site/activity.json")
  96     end
  97
  98     test "it rejects objects when attributedTo is wrong (variant 1)" do
  99       {:error, _} = Fetcher.fetch_object_from_id("https://info.pleroma.site/activity2.json")
 100     end
 101
 102     test "it rejects objects when attributedTo is wrong (variant 2)" do
 103       {:error, _} = Fetcher.fetch_object_from_id("https://info.pleroma.site/activity3.json")
 104     end
 105   end
 106
 107   describe "fetching an object" do
 108     test "it fetches an object" do
 109       {:ok, object} =
 110         Fetcher.fetch_object_from_id("http://mastodon.example.org/@admin/99541947525187367")
 111
 112       assert activity = Activity.get_create_by_object_ap_id(object.data["id"])
 113       assert activity.data["id"]
 114
 115       {:ok, object_again} =
 116         Fetcher.fetch_object_from_id("http://mastodon.example.org/@admin/99541947525187367")
 117
 118       assert [attachment] = object.data["attachment"]
 119       assert is_list(attachment["url"])
 120
 121       assert object == object_again
 122     end
 123   end
 124
 125   describe "implementation quirks" do
 126     test "it can fetch plume articles" do
 127       {:ok, object} =
 128         Fetcher.fetch_object_from_id(
 129           "https://baptiste.gelez.xyz/~/PlumeDevelopment/this-month-in-plume-june-2018/"
 130         )
 131
 132       assert object
 133     end
 134
 135     test "it can fetch peertube videos" do
 136       {:ok, object} =
 137         Fetcher.fetch_object_from_id(
 138           "https://peertube.moe/videos/watch/df5f464b-be8d-46fb-ad81-2d4c2d1630e3"
 139         )
 140
 141       assert object
 142     end
 143
 144     test "it can fetch Mobilizon events" do
 145       {:ok, object} =
 146         Fetcher.fetch_object_from_id(
 147           "https://mobilizon.org/events/252d5816-00a3-4a89-a66f-15bf65c33e39"
 148         )
 149
 150       assert object
 151     end
 152
 153     test "it can fetch wedistribute articles" do
 154       {:ok, object} =
 155         Fetcher.fetch_object_from_id("https://wedistribute.org/wp-json/pterotype/v1/object/85810")
 156
 157       assert object
 158     end
 159
 160     test "all objects with fake directions are rejected by the object fetcher" do
 161       assert {:error, _} =
 162                Fetcher.fetch_and_contain_remote_object_from_id(
 163                  "https://info.pleroma.site/activity4.json"
 164                )
 165     end
 166
 167     test "handle HTTP 410 Gone response" do
 168       assert {:error, "Object has been deleted"} ==
 169                Fetcher.fetch_and_contain_remote_object_from_id(
 170                  "https://mastodon.example.org/users/userisgone"
 171                )
 172     end
 173
 174     test "handle HTTP 404 response" do
 175       assert {:error, "Object has been deleted"} ==
 176                Fetcher.fetch_and_contain_remote_object_from_id(
 177                  "https://mastodon.example.org/users/userisgone404"
 178                )
 179     end
 180   end
 181
 182   describe "pruning" do
 183     test "it can refetch pruned objects" do
 184       object_id = "http://mastodon.example.org/@admin/99541947525187367"
 185
 186       {:ok, object} = Fetcher.fetch_object_from_id(object_id)
 187
 188       assert object
 189
 190       {:ok, _object} = Object.prune(object)
 191
 192       refute Object.get_by_ap_id(object_id)
 193
 194       {:ok, %Object{} = object_two} = Fetcher.fetch_object_from_id(object_id)
 195
 196       assert object.data["id"] == object_two.data["id"]
 197       assert object.id != object_two.id
 198     end
 199   end
 200
 201   describe "signed fetches" do
 202     setup do: clear_config([:activitypub, :sign_object_fetches])
 203
 204     test_with_mock "it signs fetches when configured to do so",
 205                    Pleroma.Signature,
 206                    [:passthrough],
 207                    [] do
 208       Pleroma.Config.put([:activitypub, :sign_object_fetches], true)
 209
 210       Fetcher.fetch_object_from_id("http://mastodon.example.org/@admin/99541947525187367")
 211
 212       assert called(Pleroma.Signature.sign(:_, :_))
 213     end
 214
 215     test_with_mock "it doesn't sign fetches when not configured to do so",
 216                    Pleroma.Signature,
 217                    [:passthrough],
 218                    [] do
 219       Pleroma.Config.put([:activitypub, :sign_object_fetches], false)
 220
 221       Fetcher.fetch_object_from_id("http://mastodon.example.org/@admin/99541947525187367")
 222
 223       refute called(Pleroma.Signature.sign(:_, :_))
 224     end
 225   end
 226 end