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Versions: 5
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Contents
module SecureHeaders
class ClearSiteDataConfigError < StandardError; end
class ClearSiteData
HEADER_NAME = "Clear-Site-Data".freeze
TYPES = "types".freeze
# Valid `types`
CACHE = "cache".freeze
COOKIES = "cookies".freeze
STORAGE = "storage".freeze
EXECTION_CONTEXTS = "executionContexts".freeze
ALL_TYPES = [CACHE, COOKIES, STORAGE, EXECTION_CONTEXTS]
CONFIG_KEY = :clear_site_data
class << self
# Public: make an Clear-Site-Data header name, value pair
#
# Returns nil if not configured, returns header name and value if configured.
def make_header(config=nil)
case config
when nil, OPT_OUT, []
# noop
when Array
[HEADER_NAME, JSON.dump(TYPES => config)]
when true
[HEADER_NAME, JSON.dump(TYPES => ALL_TYPES)]
end
end
def validate_config!(config)
case config
when nil, OPT_OUT, true
# valid
when Array
unless config.all? { |t| t.is_a?(String) }
raise ClearSiteDataConfigError.new("types must be Strings")
end
begin
JSON.dump(config)
rescue JSON::GeneratorError, Encoding::UndefinedConversionError
raise ClearSiteDataConfigError.new("types must serializable by JSON")
end
else
raise ClearSiteDataConfigError.new("config must be an Array of Strings or `true`")
end
end
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems