class TokenDie

Constants

TIMESTAMP_KEY
VERSION

Attributes

encryptor[R]

Set the encryptor strategy. Defaults Parsel::JSON

secret[R]

Set the encryption secret

ttl[R]

Set the token TTL Defaults 300 (5 minutes)

Public Class Methods

new(secret, ttl = 300, encryptor = Parsel::JSON) click to toggle source

# File lib/token-die.rb, line 16
def initialize(secret, ttl = 300, encryptor = Parsel::JSON)
  @secret = secret
  @ttl = ttl
  @encryptor = encryptor
end

Public Instance Methods

expired?(timestamp) click to toggle source

# File lib/token-die.rb, line 46
def expired?(timestamp)
  timestamp.to_i < (self.timestamp - ttl)
end

fresh?(timestamp) click to toggle source

# File lib/token-die.rb, line 50
def fresh?(timestamp)
  !expired?(timestamp)
end

generate(data = {}) click to toggle source

# File lib/token-die.rb, line 26
def generate(data = {})
  timestamp = self.timestamp
  data.merge!(TIMESTAMP_KEY => timestamp)

  encryptor.encrypt(secret, data)
end

recover(token) click to toggle source

# File lib/token-die.rb, line 33
def recover(token)
  data = encryptor.decrypt(secret, token)
  return unless data
  return unless fresh?(data[TIMESTAMP_KEY])

  data.delete(TIMESTAMP_KEY)
  data
end

timestamp() click to toggle source

# File lib/token-die.rb, line 22
def timestamp
  Time.now.utc.to_i
end

valid?(token) click to toggle source

# File lib/token-die.rb, line 42
def valid?(token)
  !recover(token).nil?
end