Class: MyOptionParser

Inherits:
Object
  • Object
show all
Defined in:
lib/audit/lib/my_option_parser.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(args) ⇒ MyOptionParser

Returns a new instance of MyOptionParser.



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# File 'lib/audit/lib/my_option_parser.rb', line 7

def initialize(args)
  @args = args
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/audit/lib/my_option_parser.rb', line 5

def options
  @options
end

Instance Method Details

#benchmark ⇒ Object 



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# File 'lib/audit/lib/my_option_parser.rb', line 102

def benchmark
  raise "No benchmark file specified" if @options[:benchmark].nil?
  return @options[:benchmark]
end

#connection_type ⇒ Object 



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# File 'lib/audit/lib/my_option_parser.rb', line 80

def connection_type
  return :ami unless @options[:ami].nil?
  return :ssh unless @options[:ssh].nil?
  return :none
end

#parse ⇒ Object 



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# File 'lib/audit/lib/my_option_parser.rb', line 11

def parse()
  @options = {}
  
  opts = OptionParser.new do|opts|
    #Banner string displayed at top of help
    opts.banner = "Usage: ./main.rb\t--ssh HOST[:PORT] [--user USERNAME] --key KEYFILE --benchmark BENCHMARK"
    opts.separator "\t\t\t--ami AMI-ID --credentials CREDENTIALS --benchmark BENCHMARK"


    @options[:verbose] = false
    opts.on('-v', '--[no-]verbose', 'Output more information') do|v|
      @options[:verbose] = v
    end
                
    opts.on('-A', '--ami AMI-ID', String, 'Select this AMI for audit') do|ami|
      @options[:ami] = ami
    end
    
    opts.on('-S', '--ssh HOST', String, 'Select this host for audit') do|host|
      @options[:ssh] = host
    end
    
    opts.on('-B', '--benchmark BENCHMARK', String, 'Use this benchmark file') do|bm|
      @options[:benchmark] = bm
    end
    
    opts.on('-K', '--key KEY', String, 'Use this private key file for authentication') do|key|
      @options[:key] = key
    end
    
    opts.on('-P', '--password PASSWORD', String, 'Use this password for authentication') do|pwd|
      @options[:password] = pwd
    end
    
    opts.on('-C', '--credentials CREDENTIALS', String, 'Use these Amazon Account credentials to start the AMI') do|cd|
      @options[:credentials] = cd
    end
                
    opts.on_tail("-h", "--help", "Show this message") do
      puts opts
      exit
    end
  end

  opts.parse(@args)
  
  if @options[:ssh].nil? and @options[:ami].nil? then
    print "You must specify one of the --ssh or --ami options. Exiting.\n"
    exit 1
  end
  
  if not @options[:ssh].nil? and not @options[:ami].nil? then
    print "Options --ssh and --ami are mutually exclusive, but both chosen. Please specify only one of them. Exiting.\n"
    exit 1
  end
  
  if @options[:benchmark].nil? then
    print "Option --benchmark is required. Please specify a benchmark file for this audit. Exiting.\n"
    exit 1
  end
  
  if not @options[:ssh].nil? and @options[:key].nil? and @options[:password].nil? then
    print "At least one authentication method for SSH is required. Please specify either --key or --password. Exiting.\n"
    exit 1
  end
  
  return self
end

#ssh_credentials ⇒ Object 



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# File 'lib/audit/lib/my_option_parser.rb', line 86

def ssh_credentials
  raise "SSH credentials requested although SSH connection method is not chosen" if @options[:ssh].nil?
  raise "No SSH authentication method chosen" if @options[:password].nil? and @options[:key].nil?
  
  cred = {:host => @options[:ssh]}
  if @options[:user].nil? then
    cred[:user] = 'root' 
  else 
    cred[:user] = @options[:user]
  end
  cred[:key_data] = @options[:key] unless @options[:key].nil?
  cred[:password] = @options[:password] unless @options[:password].nil?
  
  return cred
end