Violent Ruby: Unix Password Cracker Crack Unix Passwords Method

violent_ruby_unix_password_cracker_crack_unix_passwords_method.rb

# Crack unix passwords.
#
# @example Basic Usage
#   ViolentRuby::UnixPasswordCracker.new(file: "passwords.txt", dictionary: "dictionary.txt").crack_passwords do |result|
#     next unless result[:cracked]
#     puts "Cracked #{result[:username]}'s password: #{result[:plaintext_password]}"
#   end
#
# @param  args [Hash]   The options when crack'n some passwords.
# @option args [String] :file       The path to an /etc/passwd file.
# @option args [String] :dictionary The path to a dictionry of passwords.
#
# @yield [Hash]
def crack_passwords(args = {})
  # Use the file and dictionry instance variables or the arguments.
  file = args[:file]       || @file
  dict = args[:dictionary] || @dictionary
  # Parse the given /etc/passwd file and compare with the dictionary.
  parse_etc_file(file: file) do |user, password|
    File.readlines(dict).map(&:strip).each do |word|
      if cracked?(password, word)
        yield format_result(user, password, word)
      else
        yield format_result(user, password)
      end
    end
  end
end