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Merge branch 'features/validators-apc2s' into 'develop'

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AP C2S: Remove restrictions and make it go through pipeline

See merge request pleroma/pleroma!3203
This commit is contained in:
Haelwenn 2021-07-12 05:01:36 +00:00
commit ebcc28fef0
5 changed files with 77 additions and 64 deletions
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1
CHANGELOG.md
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@ -14,6 +14,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
- HTTPSecurityPlug now sends a response header to opt out of Google's FLoC (Federated Learning of Cohorts) targeted advertising.
- Email address is now returned if requesting user is the owner of the user account so it can be exposed in client and FE user settings UIs.
- Improved Twittercard and OpenGraph meta tag generation including thumbnails and image dimension metadata when available.
- ActivityPub Client-to-Server(C2S): Limitation on the type of Activity/Object are lifted as they are now passed through ObjectValidators
### Added

3
lib/pleroma/activity.ex
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@ -292,7 +292,8 @@ def get_in_reply_to_activity(%Activity{} = activity) do
get_in_reply_to_activity_from_object(Object.normalize(activity, fetch: false))
end
def normalize(obj) when is_map(obj), do: get_by_ap_id_with_object(obj["id"])
def normalize(%Activity{data: %{"id" => ap_id}}), do: get_by_ap_id_with_object(ap_id)
def normalize(%{"id" => ap_id}), do: get_by_ap_id_with_object(ap_id)
def normalize(ap_id) when is_binary(ap_id), do: get_by_ap_id_with_object(ap_id)
def normalize(_), do: nil

104
lib/pleroma/web/activity_pub/activity_pub_controller.ex
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@ -11,7 +11,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
alias Pleroma.Object.Fetcher
alias Pleroma.User
alias Pleroma.Web.ActivityPub.ActivityPub
alias Pleroma.Web.ActivityPub.Builder
alias Pleroma.Web.ActivityPub.InternalFetchActor
alias Pleroma.Web.ActivityPub.ObjectView
alias Pleroma.Web.ActivityPub.Pipeline
@ -403,83 +402,90 @@ def read_inbox(%{assigns: %{user: %User{nickname: as_nickname}}} = conn, %{
|> json(err)
end
defp handle_user_activity(
%User{} = user,
%{"type" => "Create", "object" => %{"type" => "Note"} = object} = params
) do
content = if is_binary(object["content"]), do: object["content"], else: ""
name = if is_binary(object["name"]), do: object["name"], else: ""
summary = if is_binary(object["summary"]), do: object["summary"], else: ""
length = String.length(content <> name <> summary)
defp fix_user_message(%User{ap_id: actor}, %{"type" => "Create", "object" => object} = activity)
when is_map(object) do
length =
[object["content"], object["summary"], object["name"]]
|> Enum.filter(&is_binary(&1))
|> Enum.join("")
|> String.length()
if length > Pleroma.Config.get([:instance, :limit]) do
{:error, dgettext("errors", "Note is over the character limit")}
else
limit = Pleroma.Config.get([:instance, :limit])
if length < limit do
object =
object
|> Map.merge(Map.take(params, ["to", "cc"]))
|> Map.put("attributedTo", user.ap_id)
|> Transmogrifier.fix_object()
|> Transmogrifier.strip_internal_fields()
|> Map.put("attributedTo", actor)
|> Map.put("actor", actor)
|> Map.put("id", Utils.generate_object_id())
ActivityPub.create(%{
to: params["to"],
actor: user,
context: object["context"],
object: object,
additional: Map.take(params, ["cc"])
})
end
end
defp handle_user_activity(%User{} = user, %{"type" => "Delete"} = params) do
with %Object{} = object <- Object.normalize(params["object"], fetch: false),
true <- user.is_moderator || user.ap_id == object.data["actor"],
{:ok, delete_data, _} <- Builder.delete(user, object.data["id"]),
{:ok, delete, _} <- Pipeline.common_pipeline(delete_data, local: true) do
{:ok, delete}
{:ok, Map.put(activity, "object", object)}
else
_ -> {:error, dgettext("errors", "Can't delete object")}
{:error,
dgettext(
"errors",
"Character limit (%{limit} characters) exceeded, contains %{length} characters",
limit: limit,
length: length
)}
end
end
defp handle_user_activity(%User{} = user, %{"type" => "Like"} = params) do
with %Object{} = object <- Object.normalize(params["object"], fetch: false),
{_, {:ok, like_object, meta}} <- {:build_object, Builder.like(user, object)},
{_, {:ok, %Activity{} = activity, _meta}} <-
{:common_pipeline,
Pipeline.common_pipeline(like_object, Keyword.put(meta, :local, true))} do
defp fix_user_message(
%User{ap_id: actor} = user,
%{"type" => "Delete", "object" => object} = activity
) do
with {_, %Object{data: object_data}} <- {:normalize, Object.normalize(object, fetch: false)},
{_, true} <- {:permission, user.is_moderator || actor == object_data["actor"]} do
{:ok, activity}
else
_ -> {:error, dgettext("errors", "Can't like object")}
{:normalize, _} ->
{:error, "No such object found"}
{:permission, _} ->
{:forbidden, "You can't delete this object"}
end
end
defp handle_user_activity(_, _) do
{:error, dgettext("errors", "Unhandled activity type")}
defp fix_user_message(%User{}, activity) do
{:ok, activity}
end
def update_outbox(
%{assigns: %{user: %User{nickname: nickname} = user}} = conn,
%{assigns: %{user: %User{nickname: nickname, ap_id: actor} = user}} = conn,
%{"nickname" => nickname} = params
) do
actor = user.ap_id
params =
params
|> Map.drop(["id"])
|> Map.drop(["nickname"])
|> Map.put("id", Utils.generate_activity_id())
|> Map.put("actor", actor)
|> Transmogrifier.fix_addressing()
with {:ok, %Activity{} = activity} <- handle_user_activity(user, params) do
with {:ok, params} <- fix_user_message(user, params),
{:ok, activity, _} <- Pipeline.common_pipeline(params, local: true),
%Activity{data: activity_data} <- Activity.normalize(activity) do
conn
|> put_status(:created)
|> put_resp_header("location", activity.data["id"])
|> json(activity.data)
|> put_resp_header("location", activity_data["id"])
|> json(activity_data)
else
{:forbidden, message} ->
conn
|> put_status(:forbidden)
|> json(message)
{:error, message} ->
conn
|> put_status(:bad_request)
|> json(message)
e ->
Logger.warn(fn -> "AP C2S: #{inspect(e)}" end)
conn
|> put_status(:bad_request)
|> json("Bad Request")
end
end

2
lib/pleroma/web/activity_pub/object_validator.ex
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@ -175,6 +175,8 @@ def validate(%{"type" => type} = object, meta) when type in ~w(Add Remove) do
end
end
def validate(o, m), do: {:error, {:validator_not_set, {o, m}}}
def cast_and_apply(%{"type" => "ChatMessage"} = object) do
ChatMessageValidator.cast_and_apply(object)
end

31
test/pleroma/web/activity_pub/activity_pub_controller_test.exs
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@ -1334,9 +1334,12 @@ test "It returns poll Answers when authenticated", %{conn: conn} do
activity: %{
"@context" => "https://www.w3.org/ns/activitystreams",
"type" => "Create",
"object" => %{"type" => "Note", "content" => "AP C2S test"},
"to" => "https://www.w3.org/ns/activitystreams#Public",
"cc" => []
"object" => %{
"type" => "Note",
"content" => "AP C2S test",
"to" => "https://www.w3.org/ns/activitystreams#Public",
"cc" => []
}
}
]
end
@ -1442,19 +1445,19 @@ test "it erects a tombstone when receiving a delete activity", %{conn: conn} do
user = User.get_cached_by_ap_id(note_activity.data["actor"])
data = %{
type: "Delete",
object: %{
id: note_object.data["id"]
"type" => "Delete",
"object" => %{
"id" => note_object.data["id"]
}
}
conn =
result =
conn
|> assign(:user, user)
|> put_req_header("content-type", "application/activity+json")
|> post("/users/#{user.nickname}/outbox", data)
|> json_response(201)
result = json_response(conn, 201)
assert Activity.get_by_ap_id(result["id"])
assert object = Object.get_by_ap_id(note_object.data["id"])
@ -1479,7 +1482,7 @@ test "it rejects delete activity of object from other actor", %{conn: conn} do
|> put_req_header("content-type", "application/activity+json")
|> post("/users/#{user.nickname}/outbox", data)
assert json_response(conn, 400)
assert json_response(conn, 403)
end
test "it increases like count when receiving a like action", %{conn: conn} do
@ -1557,7 +1560,7 @@ test "Character limitation", %{conn: conn, activity: activity} do
|> post("/users/#{user.nickname}/outbox", activity)
|> json_response(400)
assert result == "Note is over the character limit"
assert result == "Character limit (5 characters) exceeded, contains 11 characters"
end
end
@ -1934,10 +1937,10 @@ test "POST /api/ap/upload_media", %{conn: conn} do
"object" => %{
"type" => "Note",
"content" => "AP C2S test, attachment",
"attachment" => [object]
},
"to" => "https://www.w3.org/ns/activitystreams#Public",
"cc" => []
"attachment" => [object],
"to" => "https://www.w3.org/ns/activitystreams#Public",
"cc" => []
}
}
activity_response =