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Contents
module CarrierWave
module Uploader
module ExtensionBlacklist
extend ActiveSupport::Concern
included do
before :cache, :check_extension_blacklist!
end
##
# Override this method in your uploader to provide a denylist of extensions which
# are prohibited to be uploaded. Compares the file's extension case insensitive.
# Furthermore, not only strings but Regexp are allowed as well.
#
# When using a Regexp in the denylist, `\A` and `\z` are automatically added to
# the Regexp expression, also case insensitive.
#
# === Returns
# [NilClass, String, Regexp, Array[String, Regexp]] a deny list of extensions which are prohibited to be uploaded
#
# === Examples
#
# def extension_denylist
# %w(swf tiff)
# end
#
# Basically the same, but using a Regexp:
#
# def extension_denylist
# [/swf/, 'tiff']
# end
#
def extension_denylist
if respond_to?(:extension_blacklist)
ActiveSupport::Deprecation.warn "#extension_blacklist is deprecated, use #extension_denylist instead." unless instance_variable_defined?(:@extension_blacklist_warned)
@extension_blacklist_warned = true
extension_blacklist
end
end
private
def check_extension_blacklist!(new_file)
return unless extension_denylist
extension = new_file.extension.to_s
if blacklisted_extension?(extension)
raise CarrierWave::IntegrityError, I18n.translate(:"errors.messages.extension_blacklist_error", extension: new_file.extension.inspect,
prohibited_types: Array(extension_denylist).join(", "), default: :"errors.messages.extension_denylist_error")
end
end
def blacklisted_extension?(extension)
Array(extension_denylist).any? { |item| extension =~ /\A#{item}\z/i }
end
end
end
end
Version data entries
8 entries across 8 versions & 2 rubygems