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Versions: 7
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Stored size: 1.02 KB
Contents
module SecureHeaders
class ReferrerPolicyConfigError < StandardError; end
class ReferrerPolicy
HEADER_NAME = "Referrer-Policy"
DEFAULT_VALUE = "origin-when-cross-origin"
VALID_POLICIES = %w(
no-referrer
no-referrer-when-downgrade
origin
origin-when-cross-origin
unsafe-url
)
CONFIG_KEY = :referrer_policy
class << self
# Public: generate an Referrer Policy 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)
[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 VALID_POLICIES.include?(config.downcase)
raise ReferrerPolicyConfigError.new("Value can only be one of #{VALID_POLICIES.join(', ')}")
end
end
end
end
end
Version data entries
7 entries across 7 versions & 1 rubygems