foodsoft/app/lib/token_verifier.rb

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# Generic token verifier with foodcoop scope
# @todo use +Rails.application.message_verifier+ when possible
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class TokenVerifier < ActiveSupport::MessageVerifier
def initialize(prefix)
super(self.class.secret)
@_prefix = prefix.is_a?(Array) ? prefix.join(':') : prefix.to_s
end
def generate(message = nil)
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fullmessage = [FoodsoftConfig.scope, @_prefix]
fullmessage.append(message) unless message.nil?
super(fullmessage)
end
def verify(message)
r = super(message)
raise InvalidMessage unless r.is_a?(Array) && r.length >= 2 && r.length <= 3
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raise InvalidScope unless r[0] == FoodsoftConfig.scope
raise InvalidPrefix unless r[1] == @_prefix
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# return original message
if r.length > 2
r[2]
end
end
class InvalidMessage < ActiveSupport::MessageVerifier::InvalidSignature; end
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class InvalidScope < ActiveSupport::MessageVerifier::InvalidSignature; end
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class InvalidPrefix < ActiveSupport::MessageVerifier::InvalidSignature; end
def self.secret
# secret_key_base for Rails 4, but Rails 3 initializer may still be used
Foodsoft::Application.config.secret_key_base || Foodsoft::Application.config.secret_token
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end
end