#
# Project
#

require 'metasploit/framework/command'
require 'metasploit/framework/command/base'
require 'rex/text'

# Based on pattern used for lib/rails/commands in the railties gem.
class Metasploit::Framework::Command::Console < Metasploit::Framework::Command::Base

  # Provides an animated spinner in a separate thread.
  #
  # See GitHub issue #4147, as this may be blocking some
  # Windows instances, which is why Windows platforms
  # should simply return immediately.

  def spinner
    return if Rex::Compat.is_windows
    return if Rex::Compat.is_cygwin
    return if $msf_spinner_thread
    $msf_spinner_thread = Thread.new do
      base_line = "[*] Starting the Metasploit Framework console..."
      cycle = 0
      loop do
        %q{/-\|}.each_char do |c|
          status = "#{base_line}#{c}\r"
          cycle += 1
          off    = cycle % base_line.length
          case status[off, 1]
          when /[a-z]/
            status[off, 1] = status[off, 1].upcase
          when /[A-Z]/
            status[off, 1] = status[off, 1].downcase
          end
          $stderr.print status
          ::IO.select(nil, nil, nil, 0.10)
        end
      end
    end
  end

  def start
    case parsed_options.options.subcommand
    when :version
      $stderr.puts "Framework Version: #{Metasploit::Framework::VERSION}"
    else
      unless parsed_options.options.console.quiet
        colorizor = Struct.new(:supports_color?).new(false).extend(Rex::Text::Color)
        $stdout.print colorizor.substitute_colors(Rex::Text.wordwrap("Metasploit tip: #{Msf::Ui::Tip.sample}\n", indent = 0, cols = 80))
        spinner
      end

      driver.run
    end
  end

  private

  # The console UI driver.
  #
  # @return [Msf::Ui::Console::Driver]
  def driver
    unless @driver

      @driver = Msf::Ui::Console::Driver.new(
          Msf::Ui::Console::Driver::DefaultPrompt,
          Msf::Ui::Console::Driver::DefaultPromptChar,
          driver_options
      )
    end

    @driver
  end

  def driver_options
    unless @driver_options
      options = parsed_options.options

      driver_options = {}
      driver_options['Config'] = options.framework.config
      driver_options['ConfirmExit'] = options.console.confirm_exit
      driver_options['DatabaseEnv'] = options.environment
      driver_options['DatabaseMigrationPaths'] = options.database.migrations_paths
      driver_options['DatabaseYAML'] = options.database.config
      driver_options['DeferModuleLoads'] = options.modules.defer_loads
      driver_options['DisableBanner'] = options.console.quiet
      driver_options['DisableDatabase'] = options.database.disable
      driver_options['HistFile'] = options.console.histfile
      driver_options['LocalOutput'] = options.console.local_output
      driver_options['Logger'] = options.console.logger
      driver_options['ModulePath'] = options.modules.path
      driver_options['Plugins'] = options.console.plugins
      driver_options['Readline'] = options.console.readline
      driver_options['RealReadline'] = options.console.real_readline
      driver_options['Resource'] = options.console.resources
      driver_options['XCommands'] = options.console.commands

      @driver_options = driver_options
    end

    @driver_options
  end
end