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Create MRF.filter_pipeline to inject :object_data when present

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Haelwenn (lanodan) Monnier 2020-09-12 12:05:36 +02:00 committed by rinpatch
parent 3a0f99ed35
commit abf25e5d52
6 changed files with 59 additions and 15 deletions
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6
CHANGELOG.md
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@ -27,6 +27,12 @@ switched to a new configuration mechanism, however it was not officially removed
- Welcome Chat messages preventing user registration with MRF Simple Policy applied to the local instance
- Mastodon API: the public timeline returning an error when the `reply_visibility` parameter is set to `self` for an unauthenticated user
## Unreleased-patch
### Security
- Fix most MRF rules either crashing or not being applied to objects passed into the Common Pipeline (ChatMessage, Question, Answer, Audio, Event)
## [2.1.1] - 2020-09-08
### Security

24
lib/pleroma/web/activity_pub/mrf.ex
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@ -5,16 +5,34 @@
defmodule Pleroma.Web.ActivityPub.MRF do
@callback filter(Map.t()) :: {:ok | :reject, Map.t()}
def filter(policies, %{} = object) do
def filter(policies, %{} = message) do
policies
|> Enum.reduce({:ok, object}, fn
policy, {:ok, object} -> policy.filter(object)
|> Enum.reduce({:ok, message}, fn
policy, {:ok, message} -> policy.filter(message)
_, error -> error
end)
end
def filter(%{} = object), do: get_policies() |> filter(object)
def pipeline_filter(%{} = message, meta) do
object = meta[:object_data]
ap_id = message["object"]
if object && ap_id do
with {:ok, message} <- filter(Map.put(message, "object", object)) do
meta = Keyword.put(meta, :object_data, message["object"])
{:ok, Map.put(message, "object", ap_id), meta}
else
{err, message} -> {err, message, meta}
end
else
{err, message} = filter(message)
{err, message, meta}
end
end
def get_policies do
Pleroma.Config.get([:mrf, :policies], []) |> get_policies()
end

3
lib/pleroma/web/activity_pub/mrf/subchain_policy.ex
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@ -28,8 +28,7 @@ defmodule Pleroma.Web.ActivityPub.MRF.SubchainPolicy do
}"
)
subchain
|> MRF.filter(message)
MRF.filter(subchain, message)
else
_e -> {:ok, message}
end

8
lib/pleroma/web/activity_pub/pipeline.ex
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@ -26,13 +26,17 @@ defmodule Pleroma.Web.ActivityPub.Pipeline do
{:error, e} ->
{:error, e}
{:reject, e} ->
{:reject, e}
end
end
def do_common_pipeline(object, meta) do
with {_, {:ok, validated_object, meta}} <-
{:validate_object, ObjectValidator.validate(object, meta)},
{_, {:ok, mrfd_object}} <- {:mrf_object, MRF.filter(validated_object)},
{_, {:ok, mrfd_object, meta}} <-
{:mrf_object, MRF.pipeline_filter(validated_object, meta)},
{_, {:ok, activity, meta}} <-
{:persist_object, ActivityPub.persist(mrfd_object, meta)},
{_, {:ok, activity, meta}} <-
@ -40,7 +44,7 @@ defmodule Pleroma.Web.ActivityPub.Pipeline do
{_, {:ok, _}} <- {:federation, maybe_federate(activity, meta)} do
{:ok, activity, meta}
else
{:mrf_object, {:reject, _}} -> {:ok, nil, meta}
{:mrf_object, {:reject, message, _}} -> {:reject, message}
e -> {:error, e}
end
end

16
test/web/activity_pub/pipeline_test.exs
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@ -26,7 +26,7 @@ defmodule Pleroma.Web.ActivityPub.PipelineTest do
{
Pleroma.Web.ActivityPub.MRF,
[],
[filter: fn o -> {:ok, o} end]
[pipeline_filter: fn o, m -> {:ok, o, m} end]
},
{
Pleroma.Web.ActivityPub.ActivityPub,
@ -51,7 +51,7 @@ defmodule Pleroma.Web.ActivityPub.PipelineTest do
Pleroma.Web.ActivityPub.Pipeline.common_pipeline(activity, meta)
assert_called(Pleroma.Web.ActivityPub.ObjectValidator.validate(activity, meta))
assert_called(Pleroma.Web.ActivityPub.MRF.filter(activity))
assert_called(Pleroma.Web.ActivityPub.MRF.pipeline_filter(activity, meta))
assert_called(Pleroma.Web.ActivityPub.ActivityPub.persist(activity, meta))
assert_called(Pleroma.Web.ActivityPub.SideEffects.handle(activity, meta))
refute called(Pleroma.Web.Federator.publish(activity))
@ -68,7 +68,7 @@ defmodule Pleroma.Web.ActivityPub.PipelineTest do
{
Pleroma.Web.ActivityPub.MRF,
[],
[filter: fn o -> {:ok, o} end]
[pipeline_filter: fn o, m -> {:ok, o, m} end]
},
{
Pleroma.Web.ActivityPub.ActivityPub,
@ -93,7 +93,7 @@ defmodule Pleroma.Web.ActivityPub.PipelineTest do
Pleroma.Web.ActivityPub.Pipeline.common_pipeline(activity, meta)
assert_called(Pleroma.Web.ActivityPub.ObjectValidator.validate(activity, meta))
assert_called(Pleroma.Web.ActivityPub.MRF.filter(activity))
assert_called(Pleroma.Web.ActivityPub.MRF.pipeline_filter(activity, meta))
assert_called(Pleroma.Web.ActivityPub.ActivityPub.persist(activity, meta))
assert_called(Pleroma.Web.ActivityPub.SideEffects.handle(activity, meta))
assert_called(Pleroma.Web.Federator.publish(activity))
@ -109,7 +109,7 @@ defmodule Pleroma.Web.ActivityPub.PipelineTest do
{
Pleroma.Web.ActivityPub.MRF,
[],
[filter: fn o -> {:ok, o} end]
[pipeline_filter: fn o, m -> {:ok, o, m} end]
},
{
Pleroma.Web.ActivityPub.ActivityPub,
@ -131,7 +131,7 @@ defmodule Pleroma.Web.ActivityPub.PipelineTest do
Pleroma.Web.ActivityPub.Pipeline.common_pipeline(activity, meta)
assert_called(Pleroma.Web.ActivityPub.ObjectValidator.validate(activity, meta))
assert_called(Pleroma.Web.ActivityPub.MRF.filter(activity))
assert_called(Pleroma.Web.ActivityPub.MRF.pipeline_filter(activity, meta))
assert_called(Pleroma.Web.ActivityPub.ActivityPub.persist(activity, meta))
assert_called(Pleroma.Web.ActivityPub.SideEffects.handle(activity, meta))
end
@ -148,7 +148,7 @@ defmodule Pleroma.Web.ActivityPub.PipelineTest do
{
Pleroma.Web.ActivityPub.MRF,
[],
[filter: fn o -> {:ok, o} end]
[pipeline_filter: fn o, m -> {:ok, o, m} end]
},
{
Pleroma.Web.ActivityPub.ActivityPub,
@ -170,7 +170,7 @@ defmodule Pleroma.Web.ActivityPub.PipelineTest do
Pleroma.Web.ActivityPub.Pipeline.common_pipeline(activity, meta)
assert_called(Pleroma.Web.ActivityPub.ObjectValidator.validate(activity, meta))
assert_called(Pleroma.Web.ActivityPub.MRF.filter(activity))
assert_called(Pleroma.Web.ActivityPub.MRF.pipeline_filter(activity, meta))
assert_called(Pleroma.Web.ActivityPub.ActivityPub.persist(activity, meta))
assert_called(Pleroma.Web.ActivityPub.SideEffects.handle(activity, meta))
end

17
test/web/pleroma_api/controllers/chat_controller_test.exs
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@ -126,6 +126,23 @@ defmodule Pleroma.Web.PleromaAPI.ChatControllerTest do
assert result["attachment"]
end
test "gets MRF reason when rejected", %{conn: conn, user: user} do
clear_config([:mrf_keyword, :reject], ["GNO"])
clear_config([:mrf, :policies], [Pleroma.Web.ActivityPub.MRF.KeywordPolicy])
other_user = insert(:user)
{:ok, chat} = Chat.get_or_create(user.id, other_user.ap_id)
result =
conn
|> put_req_header("content-type", "application/json")
|> post("/api/v1/pleroma/chats/#{chat.id}/messages", %{"content" => "GNO/Linux"})
|> json_response_and_validate_schema(200)
assert result == %{}
end
end
describe "DELETE /api/v1/pleroma/chats/:id/messages/:message_id" do