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