1 files changed, 33 insertions, 31 deletions
diff --git a/lib/pleroma/web/activity_pub/mrf/steal_emoji_policy.ex b/lib/pleroma/web/activity_pub/mrf/steal_emoji_policy.ex
index eabee6542..0311ca433 100644
--- a/lib/pleroma/web/activity_pub/mrf/steal_emoji_policy.ex
+++ b/lib/pleroma/web/activity_pub/mrf/steal_emoji_policy.ex
@@ -10,52 +10,53 @@ defmodule Pleroma.Web.ActivityPub.MRF.StealEmojiPolicy do
   @moduledoc "Detect new emojis by their shortcode and steals them"
   @behaviour Pleroma.Web.ActivityPub.MRF
 
-  defp remote_host?(host), do: host != Config.get([Pleroma.Web.Endpoint, :url, :host])
-
   defp accept_host?(host), do: host in Config.get([:mrf_steal_emoji, :hosts], [])
 
   defp steal_emoji({shortcode, url}, emoji_dir_path) do
     url = Pleroma.Web.MediaProxy.url(url)
-    {:ok, response} = Pleroma.HTTP.get(url)
-    size_limit = Config.get([:mrf_steal_emoji, :size_limit], 50_000)
 
-    if byte_size(response.body) <= size_limit do
-      extension =
-        url
-        |> URI.parse()
-        |> Map.get(:path)
-        |> Path.basename()
-        |> Path.extname()
+    with {:ok, %{status: status} = response} when status in 200..299 <- Pleroma.HTTP.get(url) do
+      size_limit = Config.get([:mrf_steal_emoji, :size_limit], 50_000)
+
+      if byte_size(response.body) <= size_limit do
+        extension =
+          url
+          |> URI.parse()
+          |> Map.get(:path)
+          |> Path.basename()
+          |> Path.extname()
+
+        file_path = Path.join(emoji_dir_path, shortcode <> (extension || ".png"))
 
-      file_path = Path.join([emoji_dir_path, shortcode <> (extension || ".png")])
+        case File.write(file_path, response.body) do
+          :ok ->
+            shortcode
 
-      with :ok <- File.write(file_path, response.body) do
-        shortcode
+          e ->
+            Logger.warn("MRF.StealEmojiPolicy: Failed to write to #{file_path}: #{inspect(e)}")
+            nil
+        end
       else
-        e ->
-          Logger.warn("MRF.StealEmojiPolicy: Failed to write to #{file_path}: #{inspect(e)}")
-          nil
+        Logger.debug(
+          "MRF.StealEmojiPolicy: :#{shortcode}: at #{url} (#{byte_size(response.body)} B) over size limit (#{
+            size_limit
+          } B)"
+        )
+
+        nil
       end
     else
-      Logger.debug(
-        "MRF.StealEmojiPolicy: :#{shortcode}: at #{url} (#{byte_size(response.body)} B) over size limit (#{
-          size_limit
-        } B)"
-      )
-
-      nil
+      e ->
+        Logger.warn("MRF.StealEmojiPolicy: Failed to fetch #{url}: #{inspect(e)}")
+        nil
     end
-  rescue
-    e ->
-      Logger.warn("MRF.StealEmojiPolicy: Failed to fetch #{url}: #{inspect(e)}")
-      nil
   end
 
   @impl true
   def filter(%{"object" => %{"emoji" => foreign_emojis, "actor" => actor}} = message) do
     host = URI.parse(actor).host
 
-    if remote_host?(host) and accept_host?(host) do
+    if host != Pleroma.Web.Endpoint.host() and accept_host?(host) do
       installed_emoji = Pleroma.Emoji.get_all() |> Enum.map(fn {k, _} -> k end)
 
       emoji_dir_path =
@@ -70,10 +71,11 @@ defmodule Pleroma.Web.ActivityPub.MRF.StealEmojiPolicy do
 
       new_emojis =
         foreign_emojis
-        |> Enum.filter(fn {shortcode, _url} -> shortcode not in installed_emoji end)
+        |> Enum.reject(fn {shortcode, _url} -> shortcode in installed_emoji end)
         |> Enum.filter(fn {shortcode, _url} ->
           reject_emoji? =
-            Config.get([:mrf_steal_emoji, :rejected_shortcodes], [])
+            [:mrf_steal_emoji, :rejected_shortcodes]
+            |> Config.get([])
             |> Enum.find(false, fn regex -> String.match?(shortcode, regex) end)
 
           !reject_emoji?