Fix broken access control and refactor avatar upload

This commit moves the note folder from
/public/uploads/note
to
/uploads/note
and changes the uploader accordingly.
Now it's no longer possible to avoid the access control by modifing the url.
The Avatar upload has been refactored to use an own uploader as well
to cleanly seperate the two upload types.

2 files changed, 33 insertions, 7 deletions

diff --git a/app/uploaders/attachment_uploader.rb b/app/uploaders/attachment_uploader.rb
index b122b6c8658..22742d287a4 100644
--- a/app/uploaders/attachment_uploader.rb
+++ b/app/uploaders/attachment_uploader.rb
@@ -3,10 +3,8 @@
 class AttachmentUploader < CarrierWave::Uploader::Base
   storage :file
 
-  after :store, :reset_events_cache
-
   def store_dir
-    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
+    "#{Rails.root}/uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
   end
 
   def image?
@@ -29,8 +27,4 @@ class AttachmentUploader < CarrierWave::Uploader::Base
   def file_storage?
     self.class.storage == CarrierWave::Storage::File
   end
-
-  def reset_events_cache(file)
-    model.reset_events_cache if model.is_a?(User)
-  end
 end
diff --git a/app/uploaders/avatar_uploader.rb b/app/uploaders/avatar_uploader.rb
new file mode 100644
index 00000000000..7cad044555b
--- /dev/null
+++ b/app/uploaders/avatar_uploader.rb
@@ -0,0 +1,32 @@
+# encoding: utf-8
+
+class AvatarUploader < CarrierWave::Uploader::Base
+  storage :file
+
+  after :store, :reset_events_cache
+
+  def store_dir
+    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
+  end
+
+  def image?
+    img_ext = %w(png jpg jpeg gif bmp tiff)
+    if file.respond_to?(:extension)
+      img_ext.include?(file.extension.downcase)
+    else
+      # Not all CarrierWave storages respond to :extension
+      ext = file.path.split('.').last.downcase
+      img_ext.include?(ext)
+    end
+  rescue
+    false
+  end
+
+  def file_storage?
+    self.class.storage == CarrierWave::Storage::File
+  end
+
+  def reset_events_cache(file)
+    model.reset_events_cache if model.is_a?(User)
+  end
+end