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# frozen_string_literal: true
module SecureHeaders
class XDOConfigError < StandardError; end
class XDownloadOptions
HEADER_NAME = "X-Download-Options".freeze
DEFAULT_VALUE = "noopen"
class << self
# Public: generate an X-Download-Options header.
#
# Returns a default header if no configuration is provided, or a
# header name and value based on the config.
def make_header(config = nil, user_agent = nil)
return if config == OPT_OUT
[HEADER_NAME, config || DEFAULT_VALUE]
end
def validate_config!(config)
return if config.nil? || config == OPT_OUT
raise TypeError.new("Must be a string. Found #{config.class}: #{config}") unless config.is_a?(String)
unless config.casecmp(DEFAULT_VALUE) == 0
raise XDOConfigError.new("Value can only be nil or 'noopen'")
end
end
end
end
end
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