diff options
Diffstat (limited to 'actionpack/lib/action_dispatch/vendor/rack-1.0/rack/auth/digest/nonce.rb')
-rw-r--r-- | actionpack/lib/action_dispatch/vendor/rack-1.0/rack/auth/digest/nonce.rb | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/auth/digest/nonce.rb b/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/auth/digest/nonce.rb new file mode 100644 index 0000000000..dbe109f29a --- /dev/null +++ b/actionpack/lib/action_dispatch/vendor/rack-1.0/rack/auth/digest/nonce.rb @@ -0,0 +1,51 @@ +require 'digest/md5' + +module Rack + module Auth + module Digest + # Rack::Auth::Digest::Nonce is the default nonce generator for the + # Rack::Auth::Digest::MD5 authentication handler. + # + # +private_key+ needs to set to a constant string. + # + # +time_limit+ can be optionally set to an integer (number of seconds), + # to limit the validity of the generated nonces. + + class Nonce + + class << self + attr_accessor :private_key, :time_limit + end + + def self.parse(string) + new(*string.unpack("m*").first.split(' ', 2)) + end + + def initialize(timestamp = Time.now, given_digest = nil) + @timestamp, @given_digest = timestamp.to_i, given_digest + end + + def to_s + [([ @timestamp, digest ] * ' ')].pack("m*").strip + end + + def digest + ::Digest::MD5.hexdigest([ @timestamp, self.class.private_key ] * ':') + end + + def valid? + digest == @given_digest + end + + def stale? + !self.class.time_limit.nil? && (@timestamp - Time.now.to_i) < self.class.time_limit + end + + def fresh? + !stale? + end + + end + end + end +end |