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authorAkihiko Odaki <akihiko.odaki.4i@stu.hosei.ac.jp>2018-03-26 21:02:10 +0900
committerEugen Rochko <eugen@zeonfederated.com>2018-03-26 14:02:10 +0200
commit40e5d2303ba1edc51beae66cc15263675980106a (patch)
tree42364f04c30bab43a27cc6ea17173ae825cad153 /app/models/concerns
parent18965cb0e611b226c6252f1669f228f5b95f1ac6 (diff)
Validate HTTP response length while receiving (#6891)
to_s method of HTTP::Response keeps blocking while it receives the whole
content, no matter how it is big. This means it may waste time to receive
unacceptably large files. It may also consume memory and disk in the
process. This solves the inefficency by checking response length while
receiving.
Diffstat (limited to 'app/models/concerns')
-rw-r--r--app/models/concerns/account_avatar.rb4
-rw-r--r--app/models/concerns/account_header.rb4
-rw-r--r--app/models/concerns/remotable.rb6
3 files changed, 9 insertions, 5 deletions
diff --git a/app/models/concerns/account_avatar.rb b/app/models/concerns/account_avatar.rb
index 9e34a9461..2d5ebfca3 100644
--- a/app/models/concerns/account_avatar.rb
+++ b/app/models/concerns/account_avatar.rb
@@ -4,6 +4,7 @@ module AccountAvatar
   extend ActiveSupport::Concern
 
   IMAGE_MIME_TYPES = ['image/jpeg', 'image/png', 'image/gif'].freeze
+  LIMIT = 2.megabytes
 
   class_methods do
     def avatar_styles(file)
@@ -19,7 +20,8 @@ module AccountAvatar
     # Avatar upload
     has_attached_file :avatar, styles: ->(f) { avatar_styles(f) }, convert_options: { all: '-strip' }, processors: [:lazy_thumbnail]
     validates_attachment_content_type :avatar, content_type: IMAGE_MIME_TYPES
-    validates_attachment_size :avatar, less_than: 2.megabytes
+    validates_attachment_size :avatar, less_than: LIMIT
+    remotable_attachment :avatar, LIMIT
   end
 
   def avatar_original_url
diff --git a/app/models/concerns/account_header.rb b/app/models/concerns/account_header.rb
index 04c576b28..ef40b8126 100644
--- a/app/models/concerns/account_header.rb
+++ b/app/models/concerns/account_header.rb
@@ -4,6 +4,7 @@ module AccountHeader
   extend ActiveSupport::Concern
 
   IMAGE_MIME_TYPES = ['image/jpeg', 'image/png', 'image/gif'].freeze
+  LIMIT = 2.megabytes
 
   class_methods do
     def header_styles(file)
@@ -19,7 +20,8 @@ module AccountHeader
     # Header upload
     has_attached_file :header, styles: ->(f) { header_styles(f) }, convert_options: { all: '-strip' }, processors: [:lazy_thumbnail]
     validates_attachment_content_type :header, content_type: IMAGE_MIME_TYPES
-    validates_attachment_size :header, less_than: 2.megabytes
+    validates_attachment_size :header, less_than: LIMIT
+    remotable_attachment :header, LIMIT
   end
 
   def header_original_url
diff --git a/app/models/concerns/remotable.rb b/app/models/concerns/remotable.rb
index 0f18c5d96..3b8c507c3 100644
--- a/app/models/concerns/remotable.rb
+++ b/app/models/concerns/remotable.rb
@@ -3,8 +3,8 @@
 module Remotable
   extend ActiveSupport::Concern
 
-  included do
-    attachment_definitions.each_key do |attachment_name|
+  class_methods do
+    def remotable_attachment(attachment_name, limit)
       attribute_name  = "#{attachment_name}_remote_url".to_sym
       method_name     = "#{attribute_name}=".to_sym
       alt_method_name = "reset_#{attachment_name}!".to_sym
@@ -33,7 +33,7 @@ module Remotable
                         File.extname(filename)
                       end
 
-            send("#{attachment_name}=", StringIO.new(response.to_s))
+            send("#{attachment_name}=", StringIO.new(response.body_with_limit(limit)))
             send("#{attachment_name}_file_name=", basename + extname)
 
             self[attribute_name] = url if has_attribute?(attribute_name)