HTTPSignaturePlugTest: Rewrite to use mox.

config/test.exs

@@ -155,6 +155,10 @@ config :pleroma, Pleroma.ScheduledActivity, config_impl: Pleroma.UnstubbedConfig
 config :pleroma, Pleroma.Web.RichMedia.Helpers, config_impl: Pleroma.StaticStubbedConfigMock
 config :pleroma, Pleroma.Uploaders.IPFS, config_impl: Pleroma.UnstubbedConfigMock
 config :pleroma, Pleroma.Web.Plugs.HTTPSecurityPlug, config_impl: Pleroma.StaticStubbedConfigMock
+config :pleroma, Pleroma.Web.Plugs.HTTPSignaturePlug, config_impl: Pleroma.StaticStubbedConfigMock
+
+config :pleroma, Pleroma.Web.Plugs.HTTPSignaturePlug,
+  http_signatures_impl: Pleroma.StubbedHTTPSignaturesMock
 
 peer_module =
   if String.to_integer(System.otp_release()) >= 25 do

lib/pleroma/http_signatures_api.ex

@@ -0,0 +1,4 @@
+defmodule Pleroma.HTTPSignaturesAPI do
+  @callback validate_conn(conn :: Plug.Conn.t()) :: boolean
+  @callback signature_for_conn(conn :: Plug.Conn.t()) :: map
+end

lib/pleroma/web/plugs/http_signature_plug.ex

@@ -8,11 +8,17 @@ defmodule Pleroma.Web.Plugs.HTTPSignaturePlug do
   import Plug.Conn
   import Phoenix.Controller, only: [get_format: 1, text: 2]
 
-  alias Pleroma.Config
   alias Pleroma.Web.ActivityPub.MRF
 
   require Logger
 
+  @config_impl Application.compile_env(:pleroma, [__MODULE__, :config_impl], Pleroma.Config)
+  @http_signatures_impl Application.compile_env(
+                          :pleroma,
+                          [__MODULE__, :http_signatures_impl],
+                          HTTPSignatures
+                        )
+
   def init(options) do
     options
   end
@@ -41,7 +47,7 @@ defmodule Pleroma.Web.Plugs.HTTPSignaturePlug do
       |> put_req_header("(request-target)", request_target)
       |> put_req_header("@request-target", request_target)
 
-    HTTPSignatures.validate_conn(conn)
+    @http_signatures_impl.validate_conn(conn)
   end
 
   defp validate_signature(conn) do
@@ -108,9 +114,9 @@ defmodule Pleroma.Web.Plugs.HTTPSignaturePlug do
   defp maybe_require_signature(%{assigns: %{valid_signature: true}} = conn), do: conn
 
   defp maybe_require_signature(%{remote_ip: remote_ip} = conn) do
-    if Pleroma.Config.get([:activitypub, :authorized_fetch_mode], false) do
+    if @config_impl.get([:activitypub, :authorized_fetch_mode], false) do
       exceptions =
-        Pleroma.Config.get([:activitypub, :authorized_fetch_mode_exceptions], [])
+        @config_impl.get([:activitypub, :authorized_fetch_mode_exceptions], [])
         |> Enum.map(&InetHelper.parse_cidr/1)
 
       if Enum.any?(exceptions, fn x -> InetCidr.contains?(x, remote_ip) end) do
@@ -129,7 +135,8 @@ defmodule Pleroma.Web.Plugs.HTTPSignaturePlug do
   defp maybe_filter_requests(%{halted: true} = conn), do: conn
 
   defp maybe_filter_requests(conn) do
-    if Pleroma.Config.get([:activitypub, :authorized_fetch_mode], false) do
+    if @config_impl.get([:activitypub, :authorized_fetch_mode], false) and
+         conn.assigns[:actor_id] do
       %{host: host} = URI.parse(conn.assigns.actor_id)
 
       if MRF.subdomain_match?(rejected_domains(), host) do
@@ -145,7 +152,7 @@ defmodule Pleroma.Web.Plugs.HTTPSignaturePlug do
   end
 
   defp rejected_domains do
-    Config.get([:instance, :rejected_instances])
+    @config_impl.get([:instance, :rejected_instances])
     |> Pleroma.Web.ActivityPub.MRF.instance_list_from_tuples()
     |> Pleroma.Web.ActivityPub.MRF.subdomains_regex()
   end

test/pleroma/web/plugs/http_signature_plug_test.exs

@@ -3,89 +3,88 @@
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.Plugs.HTTPSignaturePlugTest do
-  use Pleroma.Web.ConnCase
+  use Pleroma.Web.ConnCase, async: true
   alias Pleroma.Web.Plugs.HTTPSignaturePlug
+  alias Pleroma.StubbedHTTPSignaturesMock, as: HTTPSignaturesMock
+  alias Pleroma.StaticStubbedConfigMock, as: ConfigMock
 
   import Plug.Conn
   import Phoenix.Controller, only: [put_format: 2]
-  import Mock
+  import Mox
 
-  test "it call HTTPSignatures to check validity if the actor signed it" do
+  test "it calls HTTPSignatures to check validity if the actor signed it" do
     params = %{"actor" => "http://mastodon.example.org/users/admin"}
     conn = build_conn(:get, "/doesntmattter", params)
 
-    with_mock HTTPSignatures,
+    HTTPSignaturesMock
-      validate_conn: fn _ -> true end,
+    |> expect(:validate_conn, fn _ -> true end)
-      signature_for_conn: fn _ ->
-        %{"keyId" => "http://mastodon.example.org/users/admin#main-key"}
-      end do
-      conn =
-        conn
-        |> put_req_header(
-          "signature",
-          "keyId=\"http://mastodon.example.org/users/admin#main-key"
-        )
-        |> put_format("activity+json")
-        |> HTTPSignaturePlug.call(%{})
 
-      assert conn.assigns.valid_signature == true
+    conn =
-      assert conn.halted == false
+      conn
-      assert called(HTTPSignatures.validate_conn(:_))
+      |> put_req_header(
-    end
+        "signature",
+        "keyId=\"http://mastodon.example.org/users/admin#main-key"
+      )
+      |> put_format("activity+json")
+      |> HTTPSignaturePlug.call(%{})
+
+    assert conn.assigns.valid_signature == true
+    assert conn.halted == false
   end
 
   describe "requires a signature when `authorized_fetch_mode` is enabled" do
     setup do
-      clear_config([:activitypub, :authorized_fetch_mode], true)
-
       params = %{"actor" => "http://mastodon.example.org/users/admin"}
       conn = build_conn(:get, "/doesntmattter", params) |> put_format("activity+json")
 
       [conn: conn]
     end
 
-    test "when signature header is present", %{conn: conn} do
+    test "when signature header is present", %{conn: orig_conn} do
-      with_mock HTTPSignatures,
+      ConfigMock
-        validate_conn: fn _ -> false end,
+      |> expect(:get, fn [:activitypub, :authorized_fetch_mode], false -> true end)
-        signature_for_conn: fn _ ->
+      |> expect(:get, fn [:activitypub, :authorized_fetch_mode_exceptions], [] -> [] end)
-          %{"keyId" => "http://mastodon.example.org/users/admin#main-key"}
-        end do
-        conn =
-          conn
-          |> put_req_header(
-            "signature",
-            "keyId=\"http://mastodon.example.org/users/admin#main-key"
-          )
-          |> HTTPSignaturePlug.call(%{})
 
-        assert conn.assigns.valid_signature == false
+      HTTPSignaturesMock
-        assert conn.halted == true
+      |> expect(:validate_conn, 2, fn _ -> false end)
-        assert conn.status == 401
-        assert conn.state == :sent
-        assert conn.resp_body == "Request not signed"
-        assert called(HTTPSignatures.validate_conn(:_))
-      end
 
-      with_mock HTTPSignatures,
+      conn =
-        validate_conn: fn _ -> true end,
+        orig_conn
-        signature_for_conn: fn _ ->
+        |> put_req_header(
-          %{"keyId" => "http://mastodon.example.org/users/admin#main-key"}
+          "signature",
-        end do
+          "keyId=\"http://mastodon.example.org/users/admin#main-key"
-        conn =
+        )
-          conn
+        |> HTTPSignaturePlug.call(%{})
-          |> put_req_header(
-            "signature",
-            "keyId=\"http://mastodon.example.org/users/admin#main-key"
-          )
-          |> HTTPSignaturePlug.call(%{})
 
-        assert conn.assigns.valid_signature == true
+      assert conn.assigns.valid_signature == false
-        assert conn.halted == false
+      assert conn.halted == true
-        assert called(HTTPSignatures.validate_conn(:_))
+      assert conn.status == 401
-      end
+      assert conn.state == :sent
+      assert conn.resp_body == "Request not signed"
+
+      ConfigMock
+      |> expect(:get, fn [:activitypub, :authorized_fetch_mode], false -> true end)
+
+      HTTPSignaturesMock
+      |> expect(:validate_conn, fn _ -> true end)
+
+      conn =
+        orig_conn
+        |> put_req_header(
+          "signature",
+          "keyId=\"http://mastodon.example.org/users/admin#main-key"
+        )
+        |> HTTPSignaturePlug.call(%{})
+
+      assert conn.assigns.valid_signature == true
+      assert conn.halted == false
     end
 
     test "halts the connection when `signature` header is not present", %{conn: conn} do
+      ConfigMock
+      |> expect(:get, fn [:activitypub, :authorized_fetch_mode], false -> true end)
+      |> expect(:get, fn [:activitypub, :authorized_fetch_mode_exceptions], [] -> [] end)
+
       conn = HTTPSignaturePlug.call(conn, %{})
       assert conn.assigns[:valid_signature] == nil
       assert conn.halted == true
@@ -95,65 +94,71 @@ defmodule Pleroma.Web.Plugs.HTTPSignaturePlugTest do
     end
 
     test "exempts specific IPs from `authorized_fetch_mode_exceptions`", %{conn: conn} do
-      clear_config([:activitypub, :authorized_fetch_mode_exceptions], ["192.168.0.0/24"])
+      ConfigMock
+      |> expect(:get, fn [:activitypub, :authorized_fetch_mode], false -> true end)
+      |> expect(:get, fn [:activitypub, :authorized_fetch_mode_exceptions], [] ->
+        ["192.168.0.0/24"]
+      end)
+      |> expect(:get, fn [:activitypub, :authorized_fetch_mode], false -> true end)
 
-      with_mock HTTPSignatures, validate_conn: fn _ -> false end do
+      HTTPSignaturesMock
-        conn =
+      |> expect(:validate_conn, 2, fn _ -> false end)
-          conn
-          |> Map.put(:remote_ip, {192, 168, 0, 1})
-          |> put_req_header(
-            "signature",
-            "keyId=\"http://mastodon.example.org/users/admin#main-key"
-          )
-          |> HTTPSignaturePlug.call(%{})
 
-        assert conn.remote_ip == {192, 168, 0, 1}
-        assert conn.halted == false
-        assert called(HTTPSignatures.validate_conn(:_))
-      end
-    end
-  end
-
-  test "rejects requests from `rejected_instances` when `authorized_fetch_mode` is enabled" do
-    clear_config([:activitypub, :authorized_fetch_mode], true)
-    clear_config([:instance, :rejected_instances], [{"mastodon.example.org", "no reason"}])
-
-    with_mock HTTPSignatures,
-      validate_conn: fn _ -> true end,
-      signature_for_conn: fn _ ->
-        %{"keyId" => "http://mastodon.example.org/users/admin#main-key"}
-      end do
       conn =
-        build_conn(:get, "/doesntmattter", %{"actor" => "http://mastodon.example.org/users/admin"})
+        conn
+        |> Map.put(:remote_ip, {192, 168, 0, 1})
         |> put_req_header(
           "signature",
           "keyId=\"http://mastodon.example.org/users/admin#main-key"
         )
-        |> put_format("activity+json")
         |> HTTPSignaturePlug.call(%{})
 
-      assert conn.assigns.valid_signature == true
+      assert conn.remote_ip == {192, 168, 0, 1}
-      assert conn.halted == true
-      assert called(HTTPSignatures.validate_conn(:_))
-    end
-
-    with_mock HTTPSignatures,
-      validate_conn: fn _ -> true end,
-      signature_for_conn: fn _ ->
-        %{"keyId" => "http://allowed.example.org/users/admin#main-key"}
-      end do
-      conn =
-        build_conn(:get, "/doesntmattter", %{"actor" => "http://allowed.example.org/users/admin"})
-        |> put_req_header(
-          "signature",
-          "keyId=\"http://allowed.example.org/users/admin#main-key"
-        )
-        |> put_format("activity+json")
-        |> HTTPSignaturePlug.call(%{})
-
-      assert conn.assigns.valid_signature == true
       assert conn.halted == false
-      assert called(HTTPSignatures.validate_conn(:_))
     end
   end
+
+  test "rejects requests from `rejected_instances` when `authorized_fetch_mode` is enabled" do
+    ConfigMock
+    |> expect(:get, fn [:activitypub, :authorized_fetch_mode], false -> true end)
+    |> expect(:get, fn [:instance, :rejected_instances] ->
+      [{"mastodon.example.org", "no reason"}]
+    end)
+
+    HTTPSignaturesMock
+    |> expect(:validate_conn, fn _ -> true end)
+
+    conn =
+      build_conn(:get, "/doesntmattter", %{"actor" => "http://mastodon.example.org/users/admin"})
+      |> put_req_header(
+        "signature",
+        "keyId=\"http://mastodon.example.org/users/admin#main-key"
+      )
+      |> put_format("activity+json")
+      |> HTTPSignaturePlug.call(%{})
+
+    assert conn.assigns.valid_signature == true
+    assert conn.halted == true
+
+    ConfigMock
+    |> expect(:get, fn [:activitypub, :authorized_fetch_mode], false -> true end)
+    |> expect(:get, fn [:instance, :rejected_instances] ->
+      [{"mastodon.example.org", "no reason"}]
+    end)
+
+    HTTPSignaturesMock
+    |> expect(:validate_conn, fn _ -> true end)
+
+    conn =
+      build_conn(:get, "/doesntmattter", %{"actor" => "http://allowed.example.org/users/admin"})
+      |> put_req_header(
+        "signature",
+        "keyId=\"http://allowed.example.org/users/admin#main-key"
+      )
+      |> put_format("activity+json")
+      |> HTTPSignaturePlug.call(%{})
+
+    assert conn.assigns.valid_signature == true
+    assert conn.halted == false
+  end
 end

test/support/data_case.ex

@@ -116,6 +116,7 @@ defmodule Pleroma.DataCase do
     Mox.stub_with(Pleroma.Web.FederatorMock, Pleroma.Web.Federator)
     Mox.stub_with(Pleroma.ConfigMock, Pleroma.Config)
     Mox.stub_with(Pleroma.StaticStubbedConfigMock, Pleroma.Test.StaticConfig)
+    Mox.stub_with(Pleroma.StubbedHTTPSignaturesMock, Pleroma.Test.HTTPSignaturesProxy)
   end
 
   def ensure_local_uploader(context) do

test/support/http_signatures_proxy.ex

@@ -0,0 +1,9 @@
+defmodule Pleroma.Test.HTTPSignaturesProxy do
+  @behaviour Pleroma.HTTPSignaturesAPI
+
+  @impl true
+  defdelegate validate_conn(conn), to: HTTPSignatures
+
+  @impl true
+  defdelegate signature_for_conn(conn), to: HTTPSignatures
+end

test/support/mocks.ex

@@ -28,6 +28,7 @@ Mox.defmock(Pleroma.Web.FederatorMock, for: Pleroma.Web.Federator.Publishing)
 Mox.defmock(Pleroma.ConfigMock, for: Pleroma.Config.Getting)
 Mox.defmock(Pleroma.UnstubbedConfigMock, for: Pleroma.Config.Getting)
 Mox.defmock(Pleroma.StaticStubbedConfigMock, for: Pleroma.Config.Getting)
+Mox.defmock(Pleroma.StubbedHTTPSignaturesMock, for: Pleroma.HTTPSignaturesAPI)
 
 Mox.defmock(Pleroma.LoggerMock, for: Pleroma.Logging)