Class: Aikido::Zen::Request::HeuristicRouter::SecretMatcher

Inherits:
Object
  • Object
show all
Defined in:
lib/aikido/zen/request/heuristic_router.rb

Constant Summary collapse

MIN_LENGTH = 
10
SECRET_THRESHOLD = 
0.75
LOWER = 
/[[:lower:]]/
UPPER = 
/[[:upper:]]/
DIGIT = 
/[[:digit:]]/
SPECIAL = 
/[!#\$%^&*|;:<>]/
SEPARATORS = 
/[[:space:]]|-/

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.===(candidate) ⇒ Boolean

Decides if a given string looks random enough to be a “secret”.

Parameters:

  • candidate (String)

Returns:

  • (Boolean) 


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# File 'lib/aikido/zen/request/heuristic_router.rb', line 78

def self.===(candidate)
  new(candidate).matches?
end

Instance Method Details

#matches? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/aikido/zen/request/heuristic_router.rb', line 86

def matches?
  return false if @string.size <= MIN_LENGTH
  return false if SEPARATORS === @string
  return false unless DIGIT === @string
  return false if [LOWER, UPPER, SPECIAL].none? { |pattern| pattern === @string }

  ratios = @string.chars.each_cons(MIN_LENGTH).map do |window|
    window.to_set.size / MIN_LENGTH.to_f
  end

  ratios.sum / ratios.size > SECRET_THRESHOLD
end