Fix base64-encoded file uploads not being possible (#12748)

Fix #3804, Fix #5776

1 files changed, 11 insertions, 0 deletions

diff --git a/app/models/concerns/attachmentable.rb b/app/models/concerns/attachmentable.rb
index 3bbc6453c..1e8c4806f 100644
--- a/app/models/concerns/attachmentable.rb
+++ b/app/models/concerns/attachmentable.rb
@@ -9,6 +9,7 @@ module Attachmentable
   GIF_MATRIX_LIMIT = 921_600    # 1280x720px
 
   included do
+    before_post_process :obfuscate_file_name
     before_post_process :set_file_extensions
     before_post_process :check_image_dimensions
     before_post_process :set_file_content_type
@@ -68,4 +69,14 @@ module Attachmentable
   rescue Terrapin::CommandLineError
     ''
   end
+
+  def obfuscate_file_name
+    self.class.attachment_definitions.each_key do |attachment_name|
+      attachment = send(attachment_name)
+
+      next if attachment.blank?
+
+      attachment.instance_write :file_name, SecureRandom.hex(8) + File.extname(attachment.instance_read(:file_name))
+    end
+  end
 end