Add support for libvips in addition to ImageMagick (#30090)

Co-authored-by: Claire <claire.github-309c@sitedethib.com>

config/application.rb

@@ -27,7 +27,7 @@ require_relative '../lib/sanitize_ext/sanitize_config'
 require_relative '../lib/redis/namespace_extensions'
 require_relative '../lib/paperclip/url_generator_extensions'
 require_relative '../lib/paperclip/attachment_extensions'
-require_relative '../lib/paperclip/lazy_thumbnail'
+
 require_relative '../lib/paperclip/gif_transcoder'
 require_relative '../lib/paperclip/media_type_spoof_detector_extensions'
 require_relative '../lib/paperclip/transcoder'
@@ -100,6 +100,14 @@ module Mastodon
 
     config.before_configuration do
       require 'mastodon/redis_config'
+
+      config.x.use_vips = ENV['MASTODON_USE_LIBVIPS'] == 'true'
+
+      if config.x.use_vips
+        require_relative '../lib/paperclip/vips_lazy_thumbnail'
+      else
+        require_relative '../lib/paperclip/lazy_thumbnail'
+      end
     end
 
     config.to_prepare do

config/initializers/vips.rb

@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+if Rails.configuration.x.use_vips
+  ENV['VIPS_BLOCK_UNTRUSTED'] = 'true'
+
+  require 'vips'
+
+  abort('Incompatible libvips version, please install libvips >= 8.13') unless Vips.at_least_libvips?(8, 13)
+
+  Vips.block('VipsForeign', true)
+
+  %w(
+    VipsForeignLoadNsgif
+    VipsForeignLoadJpeg
+    VipsForeignLoadPng
+    VipsForeignLoadWebp
+    VipsForeignLoadHeif
+    VipsForeignSavePng
+    VipsForeignSaveSpng
+    VipsForeignSaveJpeg
+    VipsForeignSaveWebp
+  ).each do |operation|
+    Vips.block(operation, false)
+  end
+
+  Vips.block_untrusted(true)
+end