Class: DevRandomPasswords::Generator

Inherits:
Object
  • Object
show all
Defined in:
lib/dev-random-passwords.rb

Constant Summary collapse

LOWERCASE_CHARS = 
('a'..'z').to_a.join("")
UPPERCASE_CHARS = 
('A'..'Z').to_a.join("")
DIGITS = 
('0'..'9').to_a.join("")
SPECIAL_CHARS = 
'!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~'
NOT_READABLE_ERROR = 
"is not readable by the current user please change permissions on this file or switch users."
REQUIREMENT_CONFLICT_ERROR = 
"You required a character type that is not possible with your current password options. Set your options and try again."

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Generator

Returns a new instance of Generator.



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# File 'lib/dev-random-passwords.rb', line 14

def initialize
  @charset = LOWERCASE_CHARS + UPPERCASE_CHARS + DIGITS + SPECIAL_CHARS
  @char_length = 12
  @requirements = nil
  @hardware_random = false
end

Instance Attribute Details

#char_length ⇒ Object

Returns the value of attribute char_length.



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# File 'lib/dev-random-passwords.rb', line 5

def char_length
  @char_length
end

#charset ⇒ Object

Returns the value of attribute charset.



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# File 'lib/dev-random-passwords.rb', line 4

def charset
  @charset
end

Instance Method Details

#generate ⇒ Object 



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# File 'lib/dev-random-passwords.rb', line 116

def generate
  new_password = ""

  @char_length.times do
    rand_num = get_byte
    while rand_num >= @charset.length
      rand_num -= @charset.length
    end
    new_password += @charset[rand_num]
  end

  check_for_conflicts

  if requirements_met? new_password
    return new_password
  else
    return generate
  end

end

#set_options(options = { 'lowercase' => true, 'uppercase' => true, 'digits' => true, 'special' => true, 'include' => nil, 'exclude' => nil, 'length' => 12, 'requirements' => nil}) ⇒ Object 



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# File 'lib/dev-random-passwords.rb', line 21

def set_options(options={
  'lowercase' => true,
  'uppercase' => true,
  'digits' => true,
  'special' => true,
  'include' => nil,
  'exclude' => nil,
  'length' => 12,
  'requirements' => nil})

  new_set = ""

  if options['lowercase']
    new_set += LOWERCASE_CHARS
  end

  if options['uppercase']
    new_set += UPPERCASE_CHARS
  end

  if options['digits']
    new_set += DIGITS
  end

  if options['special']
    new_set += SPECIAL_CHARS
  end

  if new_set.empty?
    unless options['lowercase'] == false
      new_set = new_set + LOWERCASE_CHARS
    end
    unless options['uppercase'] == false
      new_set = new_set + UPPERCASE_CHARS
    end
    unless options['digits'] == false
      new_set = new_set + DIGITS
    end
    unless options['special'] == false
      new_set = new_set + SPECIAL_CHARS
    end
  end

  if options['include']
    if options['include'].respond_to? :each
      options['include'].each do |char|
        unless new_set.include? char
          new_set.insert(-1, char)
        end
      end
    elsif options['include'].respond_to? :split
      options['include'].split("").each do |char|
        unless new_set.include? char
          new_set.insert(-1, char)
        end
      end
    end
  end

  if options['exclude']
    if options['exclude'].respond_to? :each
      options['exclude'].each do |char|
        if new_set.include? char
          new_set = new_set.tr(char, '')
        end
      end
    elsif options['exclude'].respond_to? :split
      options['exclude'].split("").each do |char|
        if new_set.include? char
          new_set = new_set.tr(char, '')
        end
      end
    end
  end

  if new_set.empty?
    raise BAD_CHARACTER_SET_ERROR
  end

  @charset = new_set

  if options['length']
    if options['length'].respond_to? :to_i
      @char_length = options['length'].to_i
    end
  end

  if options['requirements']
    @requirements = options['requirements']
  end

  nil

end