Add backwards compatibility to ruby 1.8.7 for uuid generate

Author: subfusc

lib/onelogin/ruby-saml/utils.rb

@@ -1,9 +1,16 @@
+if RUBY_VERSION < '1.9'
+  require 'uuid'
+else
+  require 'securerandom'
+end
+
 module OneLogin
   module RubySaml
 
     # SAML2 Auxiliary class
     #
     class Utils
+      @@uuid_generator = UUID.new if RUBY_VERSION < '1.9'
 
       DSIG      = "http://www.w3.org/2000/09/xmldsig#"
       XENC      = "http://www.w3.org/2001/04/xmlenc#"
@@ -168,7 +175,7 @@ def self.retrieve_plaintext(cipher_text, symmetric_key, algorithm)
       end
 
       def self.uuid
-        "_#{SecureRandom.uuid}"
+        RUBY_VERSION < '1.9' ? "_#{@@uuid_generator.generate}" : "_#{SecureRandom.uuid}"
       end
     end
   end

ruby-saml.gemspec

@@ -25,12 +25,17 @@ Gem::Specification.new do |s|
   s.summary = %q{SAML Ruby Tookit}
   s.test_files = `git ls-files test/*`.split("\n")
 
+
+
   # Because runtime dependencies are determined at build time, we cannot make
   # Nokogiri's version dependent on the Ruby version, even though we would
   # have liked to constrain Ruby 1.8.7 to install only the 1.5.x versions.
   if defined?(JRUBY_VERSION)
     s.add_runtime_dependency('nokogiri', '>= 1.6.0')
     s.add_runtime_dependency('jruby-openssl', '>= 0.9.8')
+  elsif RUBY_VERSION < '1.9'
+    s.add_runtime_dependency('uuid')
+    s.add_runtime_dependency('nokogiri', '<= 1.5.11')
   else
     s.add_runtime_dependency('nokogiri', '>= 1.5.10')
   end