first pass at a grub_config resource

lib/inspec/resource.rb

@@ -62,6 +62,7 @@ require 'resources/etc_group'
 require 'resources/file'
 require 'resources/gem'
 require 'resources/group'
+require 'resources/grub_conf'
 require 'resources/host'
 require 'resources/inetd_conf'
 require 'resources/interface'

lib/resources/grub_conf.rb

@@ -0,0 +1,76 @@
+# encoding: utf-8
+# author: Thomas Cate
+# license: All rights reserved
+
+require 'utils/simpleconfig'
+
+class GrubConfig < Inspec.resource(1)
+  name 'grub_conf'
+  desc "Use the grub_conf InSpec audit resource to test the boot config of Linux systems that use Grub."
+  example "
+    describe grub_conf('/etc/grub.conf') do
+      its('kernel') { should include '/vmlinuz-2.6.32-573.7.1.el6.x86_64' }
+      its('kernel') { should include 'audit=1' }
+      its('default') { should_not include '1' }
+    end
+  "
+
+  def initialize(path = nil)
+    @conf_path = path || '/etc/grub.conf'
+  end
+
+  def method_missing(name)
+    read_params[name.to_s]
+  end
+
+  def to_s
+    'Grub Config'
+  end
+
+  private
+
+  def read_params
+    return @params if defined?(@params)
+
+    # read the file
+    file = inspec.file(@conf_path)
+    if ( !file.file? && !file.symlink? )
+      skip_resource "Can't find file '#{@conf_path}'"
+      return @params = {}
+    end
+
+    content = file.content
+    if content.empty? && file.size > 0
+      skip_resource "Can't read file '#{@conf_path}'"
+      return @params = {}
+    end
+
+    lines = content.split("\n")
+    kernel_opts = {}
+    lines.each_with_index do |file_line,index|
+      if ( file_line =~ /^title.*/ )
+        puts file_line
+        lines.drop(index+1).each do |kernel_line|
+          if ( kernel_line =~ /^\s.*/ )
+            option_type = kernel_line.split(' ')[0]
+            line_options = kernel_line.split(' ').drop(1)
+            if ( kernel_opts[option_type].kind_of?(Array) )
+              kernel_opts[option_type].push(*line_options)
+            else
+              kernel_opts[option_type] = line_options
+            end
+          else
+            break
+          end
+        end
+      end
+    end
+
+    # parse the file
+    conf = SimpleConfig.new(
+      content,
+      multiple_values: true,
+    ).params
+    @params = conf.merge(kernel_opts)
+  end
+end