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Christopher Brown
Christopher Brown committed Aug 6, 2009
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+ Apache License
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+Mixin::Config NOTICE
+Developed at Opscode (
+ * Copyright 2009, Opscode, Inc. <>
+Mixin::Config incorporates code from Chef. The Chef notice file follows:
+Developed at Opscode (
+Contributors and Copyright holders:
+ * Copyright 2008, Adam Jacob <>
+ * Copyright 2008, Arjuna Christensen <>
+ * Copyright 2008, Bryan McLellan <>
+ * Copyright 2008, Ezra Zygmuntowicz <>
+ * Copyright 2009, Sean Cribbs <>
+ * Copyright 2009, Christopher Brown <>
+ * Copyright 2009, Thom May <>
+Chef incorporates code modified from Open4 (, which was written by Ara T. Howard.
+Chef incorporates code modified from Merb (, which is Copyright (c) 2008 Engine Yard.
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+== Mixlib::Auth
+Mixlib::Auth provides a class-based header signing authentication object, like the one used in Chef. To use in your project:
+ require 'rubygems'
+ require 'mixlib/config'
+ class MyConfig
+ extend(Mixlib::Config)
+ configure do |c|
+ c[:first_value] = 'something'
+ c[:other_value] = 'something_else'
+ end
+ end
+ class MyConfig
+ extend(Mixlib::Config)
+ first_value 'something'
+ other_value 'something_else'
+ end
+To check a configuration variable:
+ MyConfig.first_value # returns 'something'
+ MyConfig[:first_value] # returns 'something'
+To change a configuration variable at runtime:
+ MyConfig.first_value('foobar') # sets first_value to 'foobar'
+ MyConfig[:first_value] = 'foobar' # sets first_value to 'foobar'
+You should populate your class with the default values for every configuration variable that might be accessed. If you try and access a variable that does not exist, Mixlib::Config will throw an <ArgumentError>.
+To load a ruby configuration file (which will evaluate in the context of your configuration class):
+ MyConfig.from_file('your_config_file.rb')
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+require 'rubygems'
+require 'rake/gempackagetask'
+require 'rubygems/specification'
+require 'date'
+require 'spec/rake/spectask'
+require 'cucumber/rake/task'
+GEM = "mixlib-authentication"
+GEM_VERSION = "1.0.0"
+AUTHOR = "Opscode, Inc."
+EMAIL = ""
+SUMMARY = "Mixes in simple per-request authentication"
+spec = do |s|
+ = GEM
+ s.version = GEM_VERSION
+ s.platform = Gem::Platform::RUBY
+ s.has_rdoc = true
+ s.extra_rdoc_files = ["README.rdoc", "LICENSE", 'NOTICE']
+ s.summary = SUMMARY
+ s.description = s.summary
+ s.homepage = HOMEPAGE
+ # Uncomment this to add a dependency
+ # s.add_dependency "foo"
+ s.require_path = 'lib'
+ s.autorequire = GEM
+ s.files = %w(LICENSE README.rdoc Rakefile NOTICE) + Dir.glob("{lib,spec,features}/**/*")
+task :default => :test
+desc "Run specs" do |t|
+ t.spec_files = FileList['spec/**/*_spec.rb']
+ t.spec_opts = %w(-fs --color)
+ do |pkg|
+ pkg.gem_spec = spec
+desc "install the gem locally"
+task :install => [:package] do
+ sh %{sudo gem install pkg/#{GEM}-#{GEM_VERSION}}
+desc "create a gemspec file"
+task :make_spec do
+"#{GEM}.gemspec", "w") do |file|
+ file.puts spec.to_ruby
+ end
+ do |t|
+ t.step_pattern = 'features/steps/**/*.rb'
+ supportdir = 'features/support'
+ t.cucumber_opts = "--format pretty -r #{supportdir}"
+desc "remove build files"
+task :clean do
+ sh %Q{ rm -f pkg/*.gem }
+desc "Run the spec and features"
+task :test => [ :features, :spec ]
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+require 'couchrest'
+require 'mixlib/log'
+module Mixlib
+ module Authentication
+ class Log
+ extend Mixlib::Log
+ end
+ end
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+require 'mixlib/authentication'
+module Mixlib
+ module Authentication
+ class Digester
+ attr_reader :hashed_body
+ def initialize()
+ @hashed_body = nil
+ end
+ # Compare the request timestamp with boundary time
+ #
+ #
+ # ====Parameters
+ # time1<Time>:: minuend
+ # time2<Time>:: subtrahend
+ #
+ def hash_file(f)
+ digester =
+ buf = ""
+ while, buf)
+ digester.update buf
+ end
+ @hashed_body ||= ::Base64.encode64(digester.digest).chomp
+ end
+ # Digests the body, base64's and chomps the end
+ #
+ #
+ # ====Parameters
+ #
+ def hash_body(body)
+ @hashed_body ||= ::Base64.encode64(Digest::SHA1.digest(body)).chomp
+ end
+ end
+ end
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