Merge branch 'develop' into feld-2168-media-preview-proxy

[akkoma] / lib / pleroma / web / media_proxy / media_proxy_controller.ex

diff --git a/lib/pleroma/web/media_proxy/media_proxy_controller.ex b/lib/pleroma/web/media_proxy/media_proxy_controller.ex
index 157365e08e26f9aecd3b7c662df8d5aa57343afa..d465ce8d10e530b036bbf789e986ffdc3bf7bcab 100644 (file)
--- a/lib/pleroma/web/media_proxy/media_proxy_controller.ex
+++ b/lib/pleroma/web/media_proxy/media_proxy_controller.ex
@@ -6,20 +6,23 @@ defmodule Pleroma.Web.MediaProxy.MediaProxyController do
   use Pleroma.Web, :controller
 
   alias Pleroma.Config
-  alias Pleroma.Helpers.MogrifyHelper
+  alias Pleroma.Helpers.MediaHelper
   alias Pleroma.ReverseProxy
   alias Pleroma.Web.MediaProxy
 
   def remote(conn, %{"sig" => sig64, "url" => url64}) do
     with {_, true} <- {:enabled, MediaProxy.enabled?()},
          {:ok, url} <- MediaProxy.decode_url(sig64, url64),
+         {_, false} <- {:in_banned_urls, MediaProxy.in_banned_urls(url)},
          :ok <- MediaProxy.verify_request_path_and_url(conn, url) do
-      proxy_opts = Config.get([:media_proxy, :proxy_opts], [])
-      ReverseProxy.call(conn, url, proxy_opts)
+      ReverseProxy.call(conn, url, media_proxy_opts())
     else
       {:enabled, false} ->
         send_resp(conn, 404, Plug.Conn.Status.reason_phrase(404))
 
+      {:in_banned_urls, true} ->
+        send_resp(conn, 404, Plug.Conn.Status.reason_phrase(404))
+
       {:error, :invalid_signature} ->
         send_resp(conn, 403, Plug.Conn.Status.reason_phrase(403))
 
@@ -62,48 +65,76 @@ defmodule Pleroma.Web.MediaProxy.MediaProxyController do
     end
   end
 
-  defp handle_preview("image/" <> _ = content_type, %{params: params} = conn, url) do
-    with {:ok, %{status: status, body: body}} when status in 200..299 <-
-           url
-           |> MediaProxy.url()
-           |> Tesla.get(opts: [adapter: [timeout: preview_timeout()]]),
-         {:ok, path} <- MogrifyHelper.store_as_temporary_file(url, body),
-         resize_dimensions <-
-           Map.get(
-             params,
-             "limit_dimensions",
-             Config.get([:media_preview_proxy, :limit_dimensions])
-           ),
-         %Mogrify.Image{} <- MogrifyHelper.in_place_resize_to_limit(path, resize_dimensions),
-         {:ok, image_binary} <- File.read(path),
-         _ <- File.rm(path) do
-      conn
-      |> put_resp_header("content-type", content_type)
-      |> send_resp(200, image_binary)
-    else
-      {_, %{status: _}} ->
-        send_resp(conn, :failed_dependency, "Can't fetch the image.")
+  defp handle_preview("image/gif" = _content_type, conn, url) do
+    mediaproxy_url = url |> MediaProxy.url()
 
-      {:error, :recv_response_timeout} ->
-        send_resp(conn, :failed_dependency, "Downstream timeout.")
+    redirect(conn, external: mediaproxy_url)
+  end
 
-      _ ->
-        send_resp(conn, :failed_dependency, "Can't handle image preview.")
-    end
+  defp handle_preview("image/" <> _ = _content_type, conn, url) do
+    handle_image_preview(conn, url)
+  end
+
+  defp handle_preview("video/" <> _ = _content_type, conn, url) do
+    mediaproxy_url = url |> MediaProxy.url()
+
+    redirect(conn, external: mediaproxy_url)
   end
 
   defp handle_preview(content_type, conn, _url) do
     send_resp(conn, :unprocessable_entity, "Unsupported content type: #{content_type}.")
   end
 
-  defp preview_head_request_timeout do
-    Config.get([:media_preview_proxy, :proxy_opts, :head_request_max_read_duration]) ||
-      preview_timeout()
+  defp handle_image_preview(%{params: params} = conn, url) do
+    quality = Config.get!([:media_preview_proxy, :image_quality])
+
+    with {thumbnail_max_width, thumbnail_max_height} <- thumbnail_max_dimensions(params),
+         {:ok, thumbnail_binary} <-
+           MediaHelper.image_resize(
+             url,
+             %{max_width: thumbnail_max_width, max_height: thumbnail_max_height, quality: quality}
+           ) do
+      conn
+      |> put_resp_header("content-type", "image/jpeg")
+      |> put_resp_header("content-disposition", "inline; filename=\"preview.jpg\"")
+      |> send_resp(200, thumbnail_binary)
+    else
+      _ ->
+        send_resp(conn, :failed_dependency, "Can't handle preview.")
+    end
   end
 
-  defp preview_timeout do
-    Config.get([:media_preview_proxy, :proxy_opts, :max_read_duration]) ||
-      Config.get([:media_proxy, :proxy_opts, :max_read_duration]) ||
+  defp thumbnail_max_dimensions(params) do
+    config = Config.get([:media_preview_proxy], [])
+
+    thumbnail_max_width =
+      if w = params["thumbnail_max_width"] do
+        String.to_integer(w)
+      else
+        Keyword.fetch!(config, :thumbnail_max_width)
+      end
+
+    thumbnail_max_height =
+      if h = params["thumbnail_max_height"] do
+        String.to_integer(h)
+      else
+        Keyword.fetch!(config, :thumbnail_max_height)
+      end
+
+    {thumbnail_max_width, thumbnail_max_height}
+  end
+
+  defp preview_head_request_timeout do
+    Keyword.get(media_preview_proxy_opts(), :head_request_max_read_duration) ||
+      Keyword.get(media_proxy_opts(), :max_read_duration) ||
       ReverseProxy.max_read_duration_default()
   end
+
+  defp media_proxy_opts do
+    Config.get([:media_proxy, :proxy_opts], [])
+  end
+
+  defp media_preview_proxy_opts do
+    Config.get([:media_preview_proxy, :proxy_opts], [])
+  end
 end