Merge branch 'develop' of git.pleroma.social:pleroma/pleroma into features/poll-valid...

[akkoma] / lib / pleroma / web / activity_pub / object_validators / common_validations.ex

diff --git a/lib/pleroma/web/activity_pub/object_validators/common_validations.ex b/lib/pleroma/web/activity_pub/object_validators/common_validations.ex
index db0e2072dbd53198b875ab034a4afce9835e03a1..e981dacaa8e166585f1b095dce992d3eae3e7e95 100644 (file)
--- a/lib/pleroma/web/activity_pub/object_validators/common_validations.ex
+++ b/lib/pleroma/web/activity_pub/object_validators/common_validations.ex
@@ -1,14 +1,37 @@
 # Pleroma: A lightweight social networking server
-# Copyright © 2017-2019 Pleroma Authors <https://pleroma.social/>
+# Copyright © 2017-2020 Pleroma Authors <https://pleroma.social/>
 # SPDX-License-Identifier: AGPL-3.0-only
 
 defmodule Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations do
   import Ecto.Changeset
 
+  alias Pleroma.Activity
   alias Pleroma.Object
   alias Pleroma.User
 
-  def validate_actor_presence(cng, field_name \\ :actor) do
+  def validate_any_presence(cng, fields) do
+    non_empty =
+      fields
+      |> Enum.map(fn field -> get_field(cng, field) end)
+      |> Enum.any?(fn
+        [] -> false
+        _ -> true
+      end)
+
+    if non_empty do
+      cng
+    else
+      fields
+      |> Enum.reduce(cng, fn field, cng ->
+        cng
+        |> add_error(field, "none of #{inspect(fields)} present")
+      end)
+    end
+  end
+
+  def validate_actor_presence(cng, options \\ []) do
+    field_name = Keyword.get(options, :field_name, :actor)
+
     cng
     |> validate_change(field_name, fn field_name, actor ->
       if User.get_cached_by_ap_id(actor) do
@@ -19,14 +42,95 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations do
     end)
   end
 
-  def validate_object_presence(cng, field_name \\ :object) do
+  def validate_actor_is_active(cng, options \\ []) do
+    field_name = Keyword.get(options, :field_name, :actor)
+
     cng
     |> validate_change(field_name, fn field_name, actor ->
-      if Object.get_cached_by_ap_id(actor) do
+      if %User{deactivated: false} = User.get_cached_by_ap_id(actor) do
         []
       else
-        [{field_name, "can't find user"}]
+        [{field_name, "can't find user (or deactivated)"}]
       end
     end)
   end
+
+  def validate_object_presence(cng, options \\ []) do
+    field_name = Keyword.get(options, :field_name, :object)
+    allowed_types = Keyword.get(options, :allowed_types, false)
+
+    cng
+    |> validate_change(field_name, fn field_name, object_id ->
+      object = Object.get_cached_by_ap_id(object_id) || Activity.get_by_ap_id(object_id)
+
+      cond do
+        !object ->
+          [{field_name, "can't find object"}]
+
+        object && allowed_types && object.data["type"] not in allowed_types ->
+          [{field_name, "object not in allowed types"}]
+
+        true ->
+          []
+      end
+    end)
+  end
+
+  def validate_object_or_user_presence(cng, options \\ []) do
+    field_name = Keyword.get(options, :field_name, :object)
+    options = Keyword.put(options, :field_name, field_name)
+
+    actor_cng =
+      cng
+      |> validate_actor_presence(options)
+
+    object_cng =
+      cng
+      |> validate_object_presence(options)
+
+    if actor_cng.valid?, do: actor_cng, else: object_cng
+  end
+
+  def validate_host_match(cng, fields \\ [:id, :actor]) do
+    unique_hosts =
+      fields
+      |> Enum.map(fn field ->
+        %URI{host: host} =
+          cng
+          |> get_field(field)
+          |> URI.parse()
+
+        host
+      end)
+      |> Enum.uniq()
+      |> Enum.count()
+
+    if unique_hosts == 1 do
+      cng
+    else
+      fields
+      |> Enum.reduce(cng, fn field, cng ->
+        cng
+        |> add_error(field, "hosts of #{inspect(fields)} aren't matching")
+      end)
+    end
+  end
+
+  def validate_fields_match(cng, fields) do
+    unique_fields =
+      fields
+      |> Enum.map(fn field -> get_field(cng, field) end)
+      |> Enum.uniq()
+      |> Enum.count()
+
+    if unique_fields == 1 do
+      cng
+    else
+      fields
+      |> Enum.reduce(cng, fn field, cng ->
+        cng
+        |> add_error(field, "Fields #{inspect(fields)} aren't matching")
+      end)
+    end
+  end
 end