X-Git-Url: https://git.squeep.com/?a=blobdiff_plain;f=lib%2Fpleroma%2Fweb%2Factivity_pub%2Fobject_validators%2Fcommon_validations.ex;h=603d87b8eb7e426215cf1da30847bd2bc970c8fb;hb=fd04137e182468d519db078d1d309043946652ca;hp=d9a629a342ec00b20760fef15b7c494e723f388f;hpb=93f64aba78f130cced2fa30dd3475e5c446be9d6;p=akkoma

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 d9a629a34..603d87b8e 100644
--- a/lib/pleroma/web/activity_pub/object_validators/common_validations.ex
+++ b/lib/pleroma/web/activity_pub/object_validators/common_validations.ex
@@ -5,10 +5,11 @@
 defmodule Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations do
   import Ecto.Changeset
 
+  alias Pleroma.Activity
   alias Pleroma.Object
   alias Pleroma.User
 
-  def validate_recipients_presence(cng, fields \\ [:to, :cc]) do
+  def validate_any_presence(cng, fields) do
     non_empty =
       fields
       |> Enum.map(fn field -> get_field(cng, field) end)
@@ -23,41 +24,118 @@ defmodule Pleroma.Web.ActivityPub.ObjectValidators.CommonValidations do
       fields
       |> Enum.reduce(cng, fn field, cng ->
         cng
-        |> add_error(field, "no recipients in any field")
+        |> add_error(field, "none of #{inspect(fields)} present")
       end)
     end
   end
 
-  def validate_actor_presence(cng, field_name \\ :actor) do
+  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
-        []
-      else
-        [{field_name, "can't find user"}]
+      case User.get_cached_by_ap_id(actor) do
+        %User{deactivated: true} ->
+          [{field_name, "user is deactivated"}]
+
+        %User{} ->
+          []
+
+        _ ->
+          [{field_name, "can't find user"}]
       end
     end)
   end
 
-  def validate_object_presence(cng, field_name \\ :object) do
+  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 ->
-      if Object.get_cached_by_ap_id(object) do
-        []
-      else
-        [{field_name, "can't find object"}]
+    |> 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, field_name \\ :object) do
-    cng
-    |> validate_change(field_name, fn field_name, object ->
-      if Object.get_cached_by_ap_id(object) || User.get_cached_by_ap_id(object) do
-        []
-      else
-        [{field_name, "can't find object"}]
+  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
+    if same_domain?(cng, fields) 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
+    if map_unique?(cng, fields) do
+      cng
+    else
+      fields
+      |> Enum.reduce(cng, fn field, cng ->
+        cng
+        |> add_error(field, "Fields #{inspect(fields)} aren't matching")
+      end)
+    end
+  end
+
+  defp map_unique?(cng, fields, func \\ & &1) do
+    Enum.reduce_while(fields, nil, fn field, acc ->
+      value =
+        cng
+        |> get_field(field)
+        |> func.()
+
+      case {value, acc} do
+        {value, nil} -> {:cont, value}
+        {value, value} -> {:cont, value}
+        _ -> {:halt, false}
       end
     end)
   end
+
+  def same_domain?(cng, fields \\ [:actor, :object]) do
+    map_unique?(cng, fields, fn value -> URI.parse(value).host end)
+  end
+
+  # This figures out if a user is able to create, delete or modify something
+  # based on the domain and superuser status
+  def validate_modification_rights(cng) do
+    actor = User.get_cached_by_ap_id(get_field(cng, :actor))
+
+    if User.superuser?(actor) || same_domain?(cng) do
+      cng
+    else
+      cng
+      |> add_error(:actor, "is not allowed to modify object")
+    end
+  end
 end