# encoding: binary
require 'ffi'
module RbNaCl
# Provides helpers for defining the libsodium bindings
module Sodium
def self.extended(klass)
klass.extend FFI::Library
klass.ffi_lib 'sodium'
end
def sodium_type(type = nil)
return @type if type.nil?
@type = type
end
def sodium_primitive(primitive = nil)
return @primitive if primitive.nil?
@primitive = primitive
end
def primitive
sodium_primitive
end
def sodium_constant(constant, name=constant)
fn = "crypto_#{sodium_type}_#{sodium_primitive}_#{constant.to_s.downcase}"
attach_function fn, [], :ulong_long
self.const_set(name, self.public_send(fn))
end
def sodium_function(name, function, arguments)
self.module_eval <<-eos, __FILE__, __LINE__ + 1
attach_function #{function.inspect}, #{arguments.inspect}, :int
def self.#{name}(*args)
ret = #{function}(*args)
ret == 0
end
eos
end
end
end