discourse/lib/freedom_patches/rails6.rb

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# frozen_string_literal: true
# this is a quick backport of a new method introduced in Rails 6
# to be removed after we upgrade to Rails 6
if ! defined? ActionView::Base.with_view_paths
class ActionView::Base
class << self
alias with_view_paths new
end
end
end
# backport of https://github.com/rails/rails/commit/890485cfce4c361c03a41ec23b0ba187007818cc
if !defined? ActionDispatch::Http::ContentDisposition
module ActionDispatch
module Http
class ContentDisposition
def self.format(disposition:, filename:)
new(disposition: disposition, filename: filename).to_s
end
attr_reader :disposition, :filename
def initialize(disposition:, filename:)
@disposition = disposition
@filename = filename
end
TRADITIONAL_ESCAPED_CHAR = /[^ A-Za-z0-9!#$+.^_`|~-]/
def ascii_filename
'filename="' + percent_escape(I18n.transliterate(filename), TRADITIONAL_ESCAPED_CHAR) + '"'
end
RFC_5987_ESCAPED_CHAR = /[^A-Za-z0-9!#$&+.^_`|~-]/
def utf8_filename
"filename*=UTF-8''" + percent_escape(filename, RFC_5987_ESCAPED_CHAR)
end
def to_s
if filename
"#{disposition}; #{ascii_filename}; #{utf8_filename}"
else
"#{disposition}"
end
end
private
def percent_escape(string, pattern)
string.gsub(pattern) do |char|
char.bytes.map { |byte| "%%%02X" % byte }.join
end
end
end
end
end
module ActionController
module DataStreaming
private
def send_file_headers!(options)
type_provided = options.has_key?(:type)
content_type = options.fetch(:type, DEFAULT_SEND_FILE_TYPE)
self.content_type = content_type
response.sending_file = true
raise ArgumentError, ":type option required" if content_type.nil?
if content_type.is_a?(Symbol)
extension = Mime[content_type]
raise ArgumentError, "Unknown MIME type #{options[:type]}" unless extension
self.content_type = extension
else
if !type_provided && options[:filename]
# If type wasn't provided, try guessing from file extension.
content_type = Mime::Type.lookup_by_extension(File.extname(options[:filename]).downcase.delete(".")) || content_type
end
self.content_type = content_type
end
disposition = options.fetch(:disposition, DEFAULT_SEND_FILE_DISPOSITION)
if disposition
headers["Content-Disposition"] = ActionDispatch::Http::ContentDisposition.format(disposition: disposition, filename: options[:filename])
end
headers["Content-Transfer-Encoding"] = "binary"
# Fix a problem with IE 6.0 on opening downloaded files:
# If Cache-Control: no-cache is set (which Rails does by default),
# IE removes the file it just downloaded from its cache immediately
# after it displays the "open/save" dialog, which means that if you
# hit "open" the file isn't there anymore when the application that
# is called for handling the download is run, so let's workaround that
response.cache_control[:public] ||= false
end
end
end
module ActiveStorage
class Service
private
def content_disposition_with(type: "inline", filename:)
disposition = (type.to_s.presence_in(%w( attachment inline )) || "inline")
ActionDispatch::Http::ContentDisposition.format(disposition: disposition, filename: filename.sanitized)
end
end
end
end