Module: Rex::Ui::Text::DispatcherShell::CommandDispatcher

Included in:
Msf::Ui::Console::CommandDispatcher, Post::Meterpreter::Ui::Console::CommandDispatcher
Defined in:
lib/rex/ui/text/dispatcher_shell.rb

Overview

Empty template base class for command dispatchers.

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#shell ⇒ Object

No tab completion items by default


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# File 'lib/rex/ui/text/dispatcher_shell.rb', line 230

def shell
  @shell
end

#tab_complete_items ⇒ Object

No tab completion items by default


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# File 'lib/rex/ui/text/dispatcher_shell.rb', line 230

def tab_complete_items
  @tab_complete_items
end

Instance Method Details

#cmd_help(cmd = nil, *ignored) ⇒ Object Also known as: cmd_?

Displays the help banner. With no arguments, this is just a list of all commands grouped by dispatcher. Otherwise, tries to use a method named cmd_#<code>cmd</code>_help for the first dispatcher that has a command named cmd. If no such method exists, uses cmd as a regex to compare against each enstacked dispatcher's name and dumps commands of any that match.


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# File 'lib/rex/ui/text/dispatcher_shell.rb', line 144

def cmd_help(cmd=nil, *ignored)
  if cmd
    help_found = false
    cmd_found = false
    shell.dispatcher_stack.each do |dispatcher|
      next unless dispatcher.respond_to?(:commands)
      next if (dispatcher.commands.nil?)
      next if (dispatcher.commands.length == 0)

      if dispatcher.respond_to?("cmd_#{cmd}")
        cmd_found = true
        break unless dispatcher.respond_to? "cmd_#{cmd}_help"
        dispatcher.send("cmd_#{cmd}_help")
        help_found = true
        break
      end
    end

    unless cmd_found
      # We didn't find a cmd, try it as a dispatcher name
      shell.dispatcher_stack.each do |dispatcher|
        if dispatcher.name =~ /#{cmd}/i
          print_line(dispatcher.help_to_s)
          cmd_found = help_found = true
        end
      end
    end
    print_error("No help for #{cmd}, try -h") if cmd_found and not help_found
    print_error("No such command") if not cmd_found
  else
    print(shell.help_to_s)
  end
end

#cmd_help_help ⇒ Object 


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# File 'lib/rex/ui/text/dispatcher_shell.rb', line 132

def cmd_help_help
  print_line "There's only so much I can do"
end

#cmd_help_tabs(str, words) ⇒ Object

Tab completion for the help command

By default just returns a list of all commands in all dispatchers.


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# File 'lib/rex/ui/text/dispatcher_shell.rb', line 183

def cmd_help_tabs(str, words)
  return [] if words.length > 1

  tabs = []
  shell.dispatcher_stack.each { |dispatcher|
    tabs += dispatcher.commands.keys
  }
  return tabs
end

#commands ⇒ Object

Returns nil for an empty set of commands.

This method should be overridden to return a Hash with command names for keys and brief help text for values.


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# File 'lib/rex/ui/text/dispatcher_shell.rb', line 42

def commands
end

#deprecated_cmd(method = nil, *args) ⇒ Object

Print a warning that the called command is deprecated and optionally forward to the replacement method (useful for when commands are renamed).


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# File 'lib/rex/ui/text/dispatcher_shell.rb', line 103

def deprecated_cmd(method=nil, *args)
  cmd = caller[0].match(/`cmd_(.*)'/)[1]
  print_error "The #{cmd} command is DEPRECATED"
  if cmd == "db_autopwn"
    print_error "See http://r-7.co/xY65Zr instead"
  elsif method and self.respond_to?("cmd_#{method}")
    print_error "Use #{method} instead"
    self.send("cmd_#{method}", *args)
  end
end

#deprecated_commands ⇒ Object

Returns an empty set of commands.

This method should be overridden if the dispatcher has commands that should be treated as deprecated. Deprecated commands will not show up in help and will not tab-complete, but will still be callable.


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# File 'lib/rex/ui/text/dispatcher_shell.rb', line 52

def deprecated_commands
  []
end

#deprecated_help(method = nil) ⇒ Object 


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# File 'lib/rex/ui/text/dispatcher_shell.rb', line 114

def deprecated_help(method=nil)
  cmd = caller[0].match(/`cmd_(.*)_help'/)[1]
  print_error "The #{cmd} command is DEPRECATED"
  if cmd == "db_autopwn"
    print_error "See http://r-7.co/xY65Zr instead"
  elsif method and self.respond_to?("cmd_#{method}_help")
    print_error "Use 'help #{method}' instead"
    self.send("cmd_#{method}_help")
  end
end

#help_to_s(opts = {}) ⇒ Object

Return a pretty, user-readable table of commands provided by this dispatcher.


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# File 'lib/rex/ui/text/dispatcher_shell.rb', line 199

def help_to_s(opts={})
  # If this dispatcher has no commands, we can't do anything useful.
  return "" if commands.nil? or commands.length == 0

  # Display the commands
  tbl = Table.new(
    'Header'  => "#{self.name} Commands",
    'Indent'  => opts['Indent'] || 4,
    'Columns' =>
      [
        'Command',
        'Description'
      ],
    'ColProps' =>
      {
        'Command' =>
          {
            'MaxWidth' => 12
          }
      })

  commands.sort.each { |c|
    tbl << c
  }

  return "\n" + tbl.to_s + "\n"
end

#initialize(shell) ⇒ Object

Initializes the command dispatcher mixin.


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# File 'lib/rex/ui/text/dispatcher_shell.rb', line 31

def initialize(shell)
  self.shell = shell
  self.tab_complete_items = []
end

#print(msg = '') ⇒ Object

Wraps shell.print


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# File 'lib/rex/ui/text/dispatcher_shell.rb', line 94

def print(msg = '')
  shell.print(msg)
end

#print_error(msg = '') ⇒ Object

Wraps shell.print_error


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# File 'lib/rex/ui/text/dispatcher_shell.rb', line 59

def print_error(msg = '')
  shell.print_error(msg)
end

#print_good(msg = '') ⇒ Object

Wraps shell.print_good


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# File 'lib/rex/ui/text/dispatcher_shell.rb', line 80

def print_good(msg = '')
  shell.print_good(msg)
end

#print_line(msg = '') ⇒ Object

Wraps shell.print_line


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# File 'lib/rex/ui/text/dispatcher_shell.rb', line 73

def print_line(msg = '')
  shell.print_line(msg)
end

#print_status(msg = '') ⇒ Object

Wraps shell.print_status


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# File 'lib/rex/ui/text/dispatcher_shell.rb', line 66

def print_status(msg = '')
  shell.print_status(msg)
end

#print_warning(msg = '') ⇒ Object

Wraps shell.print_warning


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# File 'lib/rex/ui/text/dispatcher_shell.rb', line 87

def print_warning(msg = '')
  shell.print_warning(msg)
end

#tab_complete_filenames(str, words) ⇒ Object

Provide a generic tab completion for file names.

If the only completion is a directory, this descends into that directory and continues completions with filenames contained within.


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# File 'lib/rex/ui/text/dispatcher_shell.rb', line 238

def tab_complete_filenames(str, words)
  matches = ::Readline::FILENAME_COMPLETION_PROC.call(str)
  if matches and matches.length == 1 and File.directory?(matches[0])
    dir = matches[0]
    dir += File::SEPARATOR if dir[-1,1] != File::SEPARATOR
    matches = ::Readline::FILENAME_COMPLETION_PROC.call(dir)
  end
  matches
end

#update_prompt(prompt = nil, prompt_char = nil, mode = false) ⇒ Object

Wraps shell.update_prompt


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# File 'lib/rex/ui/text/dispatcher_shell.rb', line 128

def update_prompt(prompt=nil, prompt_char = nil, mode = false)
  shell.update_prompt(prompt, prompt_char, mode)
end