Allow lang attribute

changelog.d/3882.add

@@ -0,0 +1 @@
+Allow lang attribute in status text

priv/scrubbers/default.ex

@@ -33,35 +33,35 @@ defmodule Pleroma.HTML.Scrubber.Default do
     "ugc"
   ])
 
-  Meta.allow_tag_with_these_attributes(:a, ["name", "title"])
+  Meta.allow_tag_with_these_attributes(:a, ["name", "title", "lang"])
 
-  Meta.allow_tag_with_these_attributes(:abbr, ["title"])
+  Meta.allow_tag_with_these_attributes(:abbr, ["title", "lang"])
 
-  Meta.allow_tag_with_these_attributes(:b, [])
-  Meta.allow_tag_with_these_attributes(:blockquote, [])
-  Meta.allow_tag_with_these_attributes(:br, [])
-  Meta.allow_tag_with_these_attributes(:code, [])
-  Meta.allow_tag_with_these_attributes(:del, [])
-  Meta.allow_tag_with_these_attributes(:em, [])
-  Meta.allow_tag_with_these_attributes(:hr, [])
-  Meta.allow_tag_with_these_attributes(:i, [])
-  Meta.allow_tag_with_these_attributes(:li, [])
-  Meta.allow_tag_with_these_attributes(:ol, [])
-  Meta.allow_tag_with_these_attributes(:p, [])
-  Meta.allow_tag_with_these_attributes(:pre, [])
-  Meta.allow_tag_with_these_attributes(:strong, [])
-  Meta.allow_tag_with_these_attributes(:sub, [])
-  Meta.allow_tag_with_these_attributes(:sup, [])
-  Meta.allow_tag_with_these_attributes(:ruby, [])
-  Meta.allow_tag_with_these_attributes(:rb, [])
-  Meta.allow_tag_with_these_attributes(:rp, [])
-  Meta.allow_tag_with_these_attributes(:rt, [])
-  Meta.allow_tag_with_these_attributes(:rtc, [])
-  Meta.allow_tag_with_these_attributes(:u, [])
-  Meta.allow_tag_with_these_attributes(:ul, [])
+  Meta.allow_tag_with_these_attributes(:b, ["lang"])
+  Meta.allow_tag_with_these_attributes(:blockquote, ["lang"])
+  Meta.allow_tag_with_these_attributes(:br, ["lang"])
+  Meta.allow_tag_with_these_attributes(:code, ["lang"])
+  Meta.allow_tag_with_these_attributes(:del, ["lang"])
+  Meta.allow_tag_with_these_attributes(:em, ["lang"])
+  Meta.allow_tag_with_these_attributes(:hr, ["lang"])
+  Meta.allow_tag_with_these_attributes(:i, ["lang"])
+  Meta.allow_tag_with_these_attributes(:li, ["lang"])
+  Meta.allow_tag_with_these_attributes(:ol, ["lang"])
+  Meta.allow_tag_with_these_attributes(:p, ["lang"])
+  Meta.allow_tag_with_these_attributes(:pre, ["lang"])
+  Meta.allow_tag_with_these_attributes(:strong, ["lang"])
+  Meta.allow_tag_with_these_attributes(:sub, ["lang"])
+  Meta.allow_tag_with_these_attributes(:sup, ["lang"])
+  Meta.allow_tag_with_these_attributes(:ruby, ["lang"])
+  Meta.allow_tag_with_these_attributes(:rb, ["lang"])
+  Meta.allow_tag_with_these_attributes(:rp, ["lang"])
+  Meta.allow_tag_with_these_attributes(:rt, ["lang"])
+  Meta.allow_tag_with_these_attributes(:rtc, ["lang"])
+  Meta.allow_tag_with_these_attributes(:u, ["lang"])
+  Meta.allow_tag_with_these_attributes(:ul, ["lang"])
 
   Meta.allow_tag_with_this_attribute_values(:span, "class", ["h-card", "recipients-inline"])
-  Meta.allow_tag_with_these_attributes(:span, [])
+  Meta.allow_tag_with_these_attributes(:span, ["lang"])
 
   Meta.allow_tag_with_this_attribute_values(:code, "class", ["inline"])
 
@@ -77,29 +77,30 @@ defmodule Pleroma.HTML.Scrubber.Default do
       "width",
       "height",
       "title",
-      "alt"
+      "alt",
+      "lang"
     ])
   end
 
   if Pleroma.Config.get([:markup, :allow_tables]) do
-    Meta.allow_tag_with_these_attributes(:table, [])
-    Meta.allow_tag_with_these_attributes(:tbody, [])
-    Meta.allow_tag_with_these_attributes(:td, [])
-    Meta.allow_tag_with_these_attributes(:th, [])
-    Meta.allow_tag_with_these_attributes(:thead, [])
-    Meta.allow_tag_with_these_attributes(:tr, [])
+    Meta.allow_tag_with_these_attributes(:table, ["lang"])
+    Meta.allow_tag_with_these_attributes(:tbody, ["lang"])
+    Meta.allow_tag_with_these_attributes(:td, ["lang"])
+    Meta.allow_tag_with_these_attributes(:th, ["lang"])
+    Meta.allow_tag_with_these_attributes(:thead, ["lang"])
+    Meta.allow_tag_with_these_attributes(:tr, ["lang"])
   end
 
   if Pleroma.Config.get([:markup, :allow_headings]) do
-    Meta.allow_tag_with_these_attributes(:h1, [])
-    Meta.allow_tag_with_these_attributes(:h2, [])
-    Meta.allow_tag_with_these_attributes(:h3, [])
-    Meta.allow_tag_with_these_attributes(:h4, [])
-    Meta.allow_tag_with_these_attributes(:h5, [])
+    Meta.allow_tag_with_these_attributes(:h1, ["lang"])
+    Meta.allow_tag_with_these_attributes(:h2, ["lang"])
+    Meta.allow_tag_with_these_attributes(:h3, ["lang"])
+    Meta.allow_tag_with_these_attributes(:h4, ["lang"])
+    Meta.allow_tag_with_these_attributes(:h5, ["lang"])
   end
 
   if Pleroma.Config.get([:markup, :allow_fonts]) do
-    Meta.allow_tag_with_these_attributes(:font, ["face"])
+    Meta.allow_tag_with_these_attributes(:font, ["face", "lang"])
   end
 
   Meta.strip_everything_not_covered()

test/pleroma/web/common_api_test.exs

@@ -527,6 +527,17 @@ test "zwnj is treated as word character" do
     assert Object.tags(object) == ["ساٴين‌س"]
   end
 
+  test "allows lang attribute" do
+    user = insert(:user)
+    text = ~s{<span lang="en">something</span><p lang="diaetuitech_rpyhpgc">random</p>}
+
+    {:ok, activity} = CommonAPI.post(user, %{status: text, content_type: "text/html"})
+
+    object = Object.normalize(activity, fetch: false)
+
+    assert object.data["content"] == text
+  end
+
   test "double dot in link is allowed" do
     user = insert(:user)
     text = "https://example.to/something..mp3"