Method: Rex::Ui::Text::Shell#run

Defined in:
lib/rex/ui/text/shell.rb

#run(&block) ⇒ Object

Run the command processing loop.



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# File 'lib/rex/ui/text/shell.rb', line 122

def run(&block)

  begin

    while true
      # If the stop flag was set or we've hit EOF, break out
      break if (self.stop_flag or self.stop_count > 1)

      init_tab_complete

      if framework
        if input.prompt.include?("%T")
          t = Time.now
          if framework.datastore['PromptTimeFormat']
            t = t.strftime(framework.datastore['PromptTimeFormat'])
          end
          input.prompt.gsub!(/%T/, t.to_s)
        end

        if input.prompt.include?("%H")
          hostname = ENV['HOSTNAME']
          if hostname.nil?
            hostname = `hostname`.split('.')[0]
          end

          # check if hostname is still nil
          if hostname.nil?
            hostname = ENV['COMPUTERNAME']
          end

          if hostname.nil?
            hostname = 'unknown'
          end

          input.prompt.gsub!(/%H/, hostname.chomp)
        end

        if input.prompt.include?("%U")
          user = ENV['USER']
          if user.nil?
            user = `whoami`
          end

          # check if username is still nil
          if user.nil?
            user = ENV['USERNAME']
          end

          if user.nil?
            user = 'unknown'
          end

          input.prompt.gsub!(/%U/, user.chomp)
        end

        input.prompt.gsub!(/%S/, framework.sessions.length.to_s)
        input.prompt.gsub!(/%J/, framework.jobs.length.to_s)
        input.prompt.gsub!(/%L/, Rex::Socket.source_address("50.50.50.50"))
        input.prompt.gsub!(/%D/, ::Dir.getwd)
        self.init_prompt = input.prompt
      end

      line = input.pgets()
      log_output(input.prompt)

      # If a block was passed in, pass the line to it.  If it returns true,
      # break out of the shell loop.
      if (block)
        break if (line == nil or block.call(line))
      elsif(input.eof? or line == nil)
      # If you have sessions active, this will give you a shot to exit gravefully
      # If you really are ambitious, 2 eofs will kick this out
        self.stop_count += 1
        next if(self.stop_count > 1)
        run_single("quit")
      else
      # Otherwise, call what should be an overriden instance method to
      # process the line.
        ret = run_single(line)
        # don't bother saving lines that couldn't be found as a
        # command, create the file if it doesn't exist
        if ret and self.histfile
          File.open(self.histfile, "a+") { |f|
            f.puts(line)
          }
        end
        self.stop_count = 0
      end

    end
  # Prevent accidental console quits
  rescue ::Interrupt
    output.print("Interrupt: use the 'exit' command to quit\n")
    retry
  end
end