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[#3053] Unauthenticated access control for OStatus-related controllers and ActivityPubController (base actions: :user, :object, :activity). Tests adjustments.

This commit is contained in:
Ivan Tashkinov 2020-10-05 23:48:00 +03:00
parent f6024252ae
commit 094edde7c4
9 changed files with 159 additions and 176 deletions
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56
lib/pleroma/web/activity_pub/activity_pub_controller.ex
View File

@ -32,17 +32,23 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubController do
@federating_only_actions [:internal_fetch, :relay, :relay_following, :relay_followers]
# Note: :following and :followers must be served even without authentication (as via :api)
@auth_only_actions [:read_inbox, :update_outbox, :whoami, :upload_media]
# Always accessible actions (must perform entity accessibility checks)
@no_auth_no_federation_actions [:user, :activity, :object]
@authenticated_or_federating_actions @federating_only_actions ++
@auth_only_actions ++ @no_auth_no_federation_actions
plug(FederatingPlug when action in @federating_only_actions)
plug(EnsureAuthenticatedPlug when action in @auth_only_actions)
plug(
EnsureAuthenticatedPlug,
[unless_func: &FederatingPlug.federating?/1] when action not in @federating_only_actions
)
# Note: :following and :followers must be served even without authentication (as via :api)
plug(
EnsureAuthenticatedPlug
when action in [:read_inbox, :update_outbox, :whoami, :upload_media]
[unless_func: &FederatingPlug.federating?/1]
when action not in @authenticated_or_federating_actions
)
plug(
@ -66,21 +72,22 @@ defp relay_active?(conn, _) do
def user(conn, %{"nickname" => nickname}) do
with %User{local: true} = user <- User.get_cached_by_nickname(nickname),
{_, :visible} <- {:visibility, User.visible_for(user, _reading_user = nil)},
{:ok, user} <- User.ensure_keys_present(user) do
conn
|> put_resp_content_type("application/activity+json")
|> put_view(UserView)
|> render("user.json", %{user: user})
else
nil -> {:error, :not_found}
%{local: false} -> {:error, :not_found}
_ -> {:error, :not_found}
end
end
def object(conn, _) do
with ap_id <- Endpoint.url() <> conn.request_path,
%Object{} = object <- Object.get_cached_by_ap_id(ap_id),
{_, true} <- {:public?, Visibility.is_public?(object)} do
{_, true} <- {:public?, Visibility.is_public?(object)},
{_, false} <- {:restricted?, Visibility.restrict_unauthenticated_access?(object)} do
conn
|> assign(:tracking_fun_data, object.id)
|> set_cache_ttl_for(object)
@ -88,25 +95,15 @@ def object(conn, _) do
|> put_view(ObjectView)
|> render("object.json", object: object)
else
{:public?, false} ->
{:error, :not_found}
_ -> {:error, :not_found}
end
end
def track_object_fetch(conn, nil), do: conn
def track_object_fetch(conn, object_id) do
with %{assigns: %{user: %User{id: user_id}}} <- conn do
Delivery.create(object_id, user_id)
end
conn
end
def activity(conn, _params) do
with ap_id <- Endpoint.url() <> conn.request_path,
%Activity{} = activity <- Activity.normalize(ap_id),
{_, true} <- {:public?, Visibility.is_public?(activity)} do
{_, true} <- {:public?, Visibility.is_public?(activity)},
{_, true} <- {:visible?, Visibility.visible_for_user?(activity, _reading_user = nil)} do
conn
|> maybe_set_tracking_data(activity)
|> set_cache_ttl_for(activity)
@ -114,8 +111,7 @@ def activity(conn, _params) do
|> put_view(ObjectView)
|> render("object.json", object: activity)
else
{:public?, false} -> {:error, :not_found}
nil -> {:error, :not_found}
_ -> {:error, :not_found}
end
end
@ -550,4 +546,14 @@ def upload_media(%{assigns: %{user: %User{} = user}} = conn, %{"file" => file} =
|> json(object.data)
end
end
def track_object_fetch(conn, nil), do: conn
def track_object_fetch(conn, object_id) do
with %{assigns: %{user: %User{id: user_id}}} <- conn do
Delivery.create(object_id, user_id)
end
conn
end
end

39
lib/pleroma/web/activity_pub/visibility.ex
View File

@ -44,29 +44,30 @@ def is_direct?(activity) do
def is_list?(%{data: %{"listMessage" => _}}), do: true
def is_list?(_), do: false
@spec visible_for_user?(Activity.t(), User.t() | nil) :: boolean()
def visible_for_user?(%{actor: ap_id}, %User{ap_id: ap_id}), do: true
@spec visible_for_user?(Activity.t() | nil, User.t() | nil) :: boolean()
def visible_for_user?(%Activity{actor: ap_id}, %User{ap_id: ap_id}), do: true
def visible_for_user?(nil, _), do: false
def visible_for_user?(%{data: %{"listMessage" => _}}, nil), do: false
def visible_for_user?(%Activity{data: %{"listMessage" => _}}, nil), do: false
def visible_for_user?(%{data: %{"listMessage" => list_ap_id}} = activity, %User{} = user) do
def visible_for_user?(
%Activity{data: %{"listMessage" => list_ap_id}} = activity,
%User{} = user
) do
user.ap_id in activity.data["to"] ||
list_ap_id
|> Pleroma.List.get_by_ap_id()
|> Pleroma.List.member?(user)
end
def visible_for_user?(%{local: local} = activity, nil) do
cfg_key = if local, do: :local, else: :remote
if Pleroma.Config.restrict_unauthenticated_access?(:activities, cfg_key),
def visible_for_user?(%Activity{} = activity, nil) do
if restrict_unauthenticated_access?(activity),
do: false,
else: is_public?(activity)
end
def visible_for_user?(activity, user) do
def visible_for_user?(%Activity{} = activity, user) do
x = [user.ap_id | User.following(user)]
y = [activity.actor] ++ activity.data["to"] ++ (activity.data["cc"] || [])
is_public?(activity) || Enum.any?(x, &(&1 in y))
@ -82,6 +83,26 @@ def entire_thread_visible_for_user?(%Activity{} = activity, %User{} = user) do
result
end
def restrict_unauthenticated_access?(%Activity{local: local}) do
restrict_unauthenticated_access_to_activity?(local)
end
def restrict_unauthenticated_access?(%Object{} = object) do
object
|> Object.local?()
|> restrict_unauthenticated_access_to_activity?()
end
def restrict_unauthenticated_access?(%User{} = user) do
User.visible_for(user, _reading_user = nil)
end
defp restrict_unauthenticated_access_to_activity?(local?) when is_boolean(local?) do
cfg_key = if local?, do: :local, else: :remote
Pleroma.Config.restrict_unauthenticated_access?(:activities, cfg_key)
end
def get_visibility(object) do
to = object.data["to"] || []
cc = object.data["cc"] || []

17
lib/pleroma/web/feed/tag_controller.ex
View File

@ -10,7 +10,7 @@ defmodule Pleroma.Web.Feed.TagController do
alias Pleroma.Web.Feed.FeedView
def feed(conn, params) do
unless Config.restrict_unauthenticated_access?(:activities, :local) do
if Config.get!([:instance, :public]) do
render_feed(conn, params)
else
render_error(conn, :not_found, "Not found")
@ -36,12 +36,13 @@ defp render_feed(conn, %{"tag" => raw_tag} = params) do
end
@spec parse_tag(binary() | any()) :: {format :: String.t(), tag :: String.t()}
defp parse_tag(raw_tag) when is_binary(raw_tag) do
case Enum.reverse(String.split(raw_tag, ".")) do
[format | tag] when format in ["atom", "rss"] -> {format, Enum.join(tag, ".")}
_ -> {"rss", raw_tag}
end
end
defp parse_tag(raw_tag) do
case is_binary(raw_tag) && Enum.reverse(String.split(raw_tag, ".")) do
[format | tag] when format in ["rss", "atom"] ->
{format, Enum.join(tag, ".")}
defp parse_tag(raw_tag), do: {"rss", raw_tag}
_ ->
{"atom", raw_tag}
end
end
end

19
lib/pleroma/web/feed/user_controller.ex
View File

@ -6,6 +6,8 @@ defmodule Pleroma.Web.Feed.UserController do
use Pleroma.Web, :controller
alias Fallback.RedirectController
alias Pleroma.Config
alias Pleroma.User
alias Pleroma.Web.ActivityPub.ActivityPub
alias Pleroma.Web.ActivityPub.ActivityPubController
@ -32,15 +34,7 @@ def feed_redirect(conn, %{"nickname" => nickname}) do
end
end
def feed(conn, params) do
unless Pleroma.Config.restrict_unauthenticated_access?(:profiles, :local) do
render_feed(conn, params)
else
errors(conn, {:error, :not_found})
end
end
defp render_feed(conn, %{"nickname" => nickname} = params) do
def feed(conn, %{"nickname" => nickname} = params) do
format = get_format(conn)
format =
@ -50,7 +44,8 @@ defp render_feed(conn, %{"nickname" => nickname} = params) do
"atom"
end
with {_, %User{local: true} = user} <- {:fetch_user, User.get_cached_by_nickname(nickname)} do
with {_, %User{local: true} = user} <- {:fetch_user, User.get_cached_by_nickname(nickname)},
{_, :visible} <- {:visibility, User.visible_for(user, _reading_user = nil)} do
activities =
%{
type: ["Create"],
@ -65,7 +60,7 @@ defp render_feed(conn, %{"nickname" => nickname} = params) do
|> render("user.#{format}",
user: user,
activities: activities,
feed_config: Pleroma.Config.get([:feed])
feed_config: Config.get([:feed])
)
end
end
@ -77,6 +72,8 @@ def errors(conn, {:error, :not_found}) do
def errors(conn, {:fetch_user, %User{local: false}}), do: errors(conn, {:error, :not_found})
def errors(conn, {:fetch_user, nil}), do: errors(conn, {:error, :not_found})
def errors(conn, {:visibility, _}), do: errors(conn, {:error, :not_found})
def errors(conn, _) do
render_error(conn, :internal_server_error, "Something went wrong")
end

26
lib/pleroma/web/ostatus/ostatus_controller.ex
View File

@ -33,16 +33,15 @@ def object(%{assigns: %{format: format}} = conn, _params)
ActivityPubController.call(conn, :object)
end
def object(%{assigns: %{format: format}} = conn, _params) do
def object(conn, _params) do
with id <- Endpoint.url() <> conn.request_path,
{_, %Activity{} = activity} <-
{:activity, Activity.get_create_by_object_ap_id_with_object(id)},
{_, true} <- {:public?, Visibility.is_public?(activity)} do
case format do
_ -> redirect(conn, to: "/notice/#{activity.id}")
end
{_, true} <- {:public?, Visibility.is_public?(activity)},
{_, true} <- {:visible?, Visibility.visible_for_user?(activity, _reading_user = nil)} do
redirect(conn, to: "/notice/#{activity.id}")
else
reason when reason in [{:public?, false}, {:activity, nil}] ->
reason when reason in [{:public?, false}, {:visible?, false}, {:activity, nil}] ->
{:error, :not_found}
e ->
@ -55,15 +54,14 @@ def activity(%{assigns: %{format: format}} = conn, _params)
ActivityPubController.call(conn, :activity)
end
def activity(%{assigns: %{format: format}} = conn, _params) do
def activity(conn, _params) do
with id <- Endpoint.url() <> conn.request_path,
{_, %Activity{} = activity} <- {:activity, Activity.normalize(id)},
{_, true} <- {:public?, Visibility.is_public?(activity)} do
case format do
_ -> redirect(conn, to: "/notice/#{activity.id}")
end
{_, true} <- {:public?, Visibility.is_public?(activity)},
{_, true} <- {:visible?, Visibility.visible_for_user?(activity, _reading_user = nil)} do
redirect(conn, to: "/notice/#{activity.id}")
else
reason when reason in [{:public?, false}, {:activity, nil}] ->
reason when reason in [{:public?, false}, {:visible?, false}, {:activity, nil}] ->
{:error, :not_found}
e ->
@ -74,6 +72,7 @@ def activity(%{assigns: %{format: format}} = conn, _params) do
def notice(%{assigns: %{format: format}} = conn, %{"id" => id}) do
with {_, %Activity{} = activity} <- {:activity, Activity.get_by_id_with_object(id)},
{_, true} <- {:public?, Visibility.is_public?(activity)},
{_, true} <- {:visible?, Visibility.visible_for_user?(activity, _reading_user = nil)},
%User{} = user <- User.get_cached_by_ap_id(activity.data["actor"]) do
cond do
format in ["json", "activity+json"] ->
@ -101,7 +100,7 @@ def notice(%{assigns: %{format: format}} = conn, %{"id" => id}) do
RedirectController.redirector(conn, nil)
end
else
reason when reason in [{:public?, false}, {:activity, nil}] ->
reason when reason in [{:public?, false}, {:visible?, false}, {:activity, nil}] ->
conn
|> put_status(404)
|> RedirectController.redirector(nil, 404)
@ -115,6 +114,7 @@ def notice(%{assigns: %{format: format}} = conn, %{"id" => id}) do
def notice_player(conn, %{"id" => id}) do
with %Activity{data: %{"type" => "Create"}} = activity <- Activity.get_by_id_with_object(id),
true <- Visibility.is_public?(activity),
{_, true} <- {:visible?, Visibility.visible_for_user?(activity, _reading_user = nil)},
%Object{} = object <- Object.normalize(activity),
%{data: %{"attachment" => [%{"url" => [url | _]} | _]}} <- object,
true <- String.starts_with?(url["mediaType"], ["audio", "video"]) do

52
lib/pleroma/web/router.ex
View File

@ -5,6 +5,14 @@
defmodule Pleroma.Web.Router do
use Pleroma.Web, :router
pipeline :accepts_html do
plug(:accepts, ["html"])
end
pipeline :accepts_xml_rss_atom do
plug(:accepts, ["xml", "rss", "atom"])
end
pipeline :browser do
plug(:accepts, ["html"])
plug(:fetch_session)
@ -556,39 +564,55 @@ defmodule Pleroma.Web.Router do
)
end
pipeline :ostatus do
pipeline :ostatus_html_json do
plug(:accepts, ["html", "activity+json", "json"])
plug(Pleroma.Plugs.StaticFEPlug)
end
pipeline :ostatus_html_xml do
plug(:accepts, ["html", "xml", "rss", "atom"])
plug(Pleroma.Plugs.StaticFEPlug)
end
pipeline :ostatus_html_xml_json do
plug(:accepts, ["html", "xml", "rss", "atom", "activity+json", "json"])
plug(Pleroma.Plugs.StaticFEPlug)
end
pipeline :ostatus_no_html do
plug(:accepts, ["xml", "rss", "atom", "activity+json", "json"])
end
pipeline :oembed do
plug(:accepts, ["json", "xml"])
end
scope "/", Pleroma.Web do
# Note: no authentication plugs, all endpoints below should only yield public objects
pipe_through(:ostatus)
# Note: html format is supported only if static FE is enabled
pipe_through(:ostatus_html_json)
get("/objects/:uuid", OStatus.OStatusController, :object)
get("/activities/:uuid", OStatus.OStatusController, :activity)
get("/notice/:id", OStatus.OStatusController, :notice)
get("/notice/:id/embed_player", OStatus.OStatusController, :notice_player)
# Mastodon compatibility routes
get("/users/:nickname/statuses/:id", OStatus.OStatusController, :object)
get("/users/:nickname/statuses/:id/activity", OStatus.OStatusController, :activity)
end
get("/users/:nickname/feed", Feed.UserController, :feed, as: :user_feed)
scope "/", Pleroma.Web do
# Note: html format is supported only if static FE is enabled
pipe_through(:ostatus_html_xml_json)
# Note: for json format responds with user profile (not user feed)
get("/users/:nickname", Feed.UserController, :feed_redirect, as: :user_feed)
end
scope "/", Pleroma.Web do
pipe_through(:ostatus_no_html)
# Note: html format is supported only if static FE is enabled
pipe_through(:ostatus_html_xml)
get("/users/:nickname/feed", Feed.UserController, :feed, as: :user_feed)
end
scope "/", Pleroma.Web do
pipe_through(:accepts_html)
get("/notice/:id/embed_player", OStatus.OStatusController, :notice_player)
end
scope "/", Pleroma.Web do
pipe_through(:accepts_xml_rss_atom)
get("/tags/:tag", Feed.TagController, :feed, as: :tag_feed)
end

8
lib/pleroma/web/static_fe/static_fe_controller.ex
View File

@ -24,6 +24,7 @@ def show(%{assigns: %{notice_id: notice_id}} = conn, _params) do
with %Activity{local: true} = activity <-
Activity.get_by_id_with_object(notice_id),
true <- Visibility.is_public?(activity.object),
{_, true} <- {:visible?, Visibility.visible_for_user?(activity, _reading_user = nil)},
%User{} = user <- User.get_by_ap_id(activity.object.data["actor"]) do
meta = Metadata.build_tags(%{activity_id: notice_id, object: activity.object, user: user})
@ -47,8 +48,9 @@ def show(%{assigns: %{notice_id: notice_id}} = conn, _params) do
@doc "Renders public activities of requested user"
def show(%{assigns: %{username_or_id: username_or_id}} = conn, params) do
case User.get_cached_by_nickname_or_id(username_or_id) do
%User{} = user ->
with {_, %User{local: true} = user} <-
{:fetch_user, User.get_cached_by_nickname_or_id(username_or_id)},
{_, :visible} <- {:visibility, User.visible_for(user, _reading_user = nil)} do
meta = Metadata.build_tags(%{user: user})
params =
@ -74,7 +76,7 @@ def show(%{assigns: %{username_or_id: username_or_id}} = conn, params) do
next_page_id: next_page_id,
meta: meta
})
else
_ ->
not_found(conn, "User not found.")
end

67
test/web/activity_pub/activity_pub_controller_test.exs
View File

@ -33,25 +33,6 @@ defmodule Pleroma.Web.ActivityPub.ActivityPubControllerTest do
setup do: clear_config([:instance, :federating], true)
defp ensure_federating_or_authenticated(conn, url, user) do
Config.put([:instance, :federating], false)
conn
|> get(url)
|> response(403)
conn
|> assign(:user, user)
|> get(url)
|> response(200)
Config.put([:instance, :federating], true)
conn
|> get(url)
|> response(200)
end
describe "/relay" do
setup do: clear_config([:instance, :allow_relay])
@ -175,21 +156,6 @@ test "it returns error when user is not found", %{conn: conn} do
assert response == "Not found"
end
test "it requires authentication if instance is NOT federating", %{
conn: conn
} do
user = insert(:user)
conn =
put_req_header(
conn,
"accept",
"application/ld+json; profile=\"https://www.w3.org/ns/activitystreams\""
)
ensure_federating_or_authenticated(conn, "/users/#{user.nickname}.json", user)
end
end
describe "mastodon compatibility routes" do
@ -357,18 +323,6 @@ test "cached purged after object deletion", %{conn: conn} do
assert "Not found" == json_response(conn2, :not_found)
end
test "it requires authentication if instance is NOT federating", %{
conn: conn
} do
user = insert(:user)
note = insert(:note)
uuid = String.split(note.data["id"], "/") |> List.last()
conn = put_req_header(conn, "accept", "application/activity+json")
ensure_federating_or_authenticated(conn, "/objects/#{uuid}", user)
end
end
describe "/activities/:uuid" do
@ -440,18 +394,6 @@ test "cached purged after activity deletion", %{conn: conn} do
assert "Not found" == json_response(conn2, :not_found)
end
test "it requires authentication if instance is NOT federating", %{
conn: conn
} do
user = insert(:user)
activity = insert(:note_activity)
uuid = String.split(activity.data["id"], "/") |> List.last()
conn = put_req_header(conn, "accept", "application/activity+json")
ensure_federating_or_authenticated(conn, "/activities/#{uuid}", user)
end
end
describe "/inbox" do
@ -912,15 +854,6 @@ test "it returns an announce activity in a collection", %{conn: conn} do
assert response(conn, 200) =~ announce_activity.data["object"]
end
test "it requires authentication if instance is NOT federating", %{
conn: conn
} do
user = insert(:user)
conn = put_req_header(conn, "accept", "application/activity+json")
ensure_federating_or_authenticated(conn, "/users/#{user.nickname}/outbox", user)
end
end
describe "POST /users/:nickname/outbox (C2S)" do

13
test/web/feed/tag_controller_test.exs
View File

@ -8,6 +8,7 @@ defmodule Pleroma.Web.Feed.TagControllerTest do
import Pleroma.Factory
import SweetXml
alias Pleroma.Config
alias Pleroma.Object
alias Pleroma.Web.CommonAPI
alias Pleroma.Web.Feed.FeedView
@ -15,7 +16,7 @@ defmodule Pleroma.Web.Feed.TagControllerTest do
setup do: clear_config([:feed])
test "gets a feed (ATOM)", %{conn: conn} do
Pleroma.Config.put(
Config.put(
[:feed, :post_title],
%{max_length: 25, omission: "..."}
)
@ -82,7 +83,7 @@ test "gets a feed (ATOM)", %{conn: conn} do
end
test "gets a feed (RSS)", %{conn: conn} do
Pleroma.Config.put(
Config.put(
[:feed, :post_title],
%{max_length: 25, omission: "..."}
)
@ -157,7 +158,7 @@ test "gets a feed (RSS)", %{conn: conn} do
response =
conn
|> put_req_header("accept", "application/rss+xml")
|> get(tag_feed_path(conn, :feed, "pleromaart"))
|> get(tag_feed_path(conn, :feed, "pleromaart.rss"))
|> response(200)
xml = parse(response)
@ -183,14 +184,12 @@ test "gets a feed (RSS)", %{conn: conn} do
end
describe "private instance" do
setup do: clear_config([:instance, :public])
setup do: clear_config([:instance, :public], false)
test "returns 404 for tags feed", %{conn: conn} do
Config.put([:instance, :public], false)
conn
|> put_req_header("accept", "application/rss+xml")
|> get(tag_feed_path(conn, :feed, "pleromaart"))
|> get(tag_feed_path(conn, :feed, "pleromaart.rss"))
|> response(404)
end
end