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rails--rails/activestorage/lib/active_storage.rb
Rosa Gutierrez d40284b1a4
Force content disposition to attachment for specific content types
In this way we avoid HTML, XML, SVG and other files that can be rendered
by the browser to be served inline by default. Depending on the origin
from where these files are served, this might lead to XSS
vulnerabilities, and in the best case, to more realistic phishing
attacks and open redirects.

We force it rather than falling back to it when other disposition is not
provided. Otherwise it would be possible for someone to force inline
just by passing `disposition=inline` in the URL.

The list of content types to be served as attachments is configurable.
2018-01-05 16:32:32 +01:00

47 lines
1.7 KiB
Ruby

# frozen_string_literal: true
#--
# Copyright (c) 2017-2018 David Heinemeier Hansson, Basecamp
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#++
require "active_record"
require "active_support"
require "active_support/rails"
require "active_storage/version"
module ActiveStorage
extend ActiveSupport::Autoload
autoload :Attached
autoload :Service
autoload :Previewer
autoload :Analyzer
mattr_accessor :logger
mattr_accessor :verifier
mattr_accessor :queue
mattr_accessor :previewers, default: []
mattr_accessor :analyzers, default: []
mattr_accessor :paths, default: {}
mattr_accessor :variable_content_types, default: []
mattr_accessor :content_types_to_serve_as_binary, default: []
end