Module: ActsAsTextcaptcha::Textcaptcha::InstanceMethods

Defined in:
lib/acts_as_textcaptcha/textcaptcha.rb

Instance Method Summary collapse

Instance Method Details

#perform_textcaptcha? ⇒ Boolean

override this method to toggle textcaptcha spam checking altogether, default is on (true)

Returns:

  • (Boolean) 


65
66
67
 
# File 'lib/acts_as_textcaptcha/textcaptcha.rb', line 65

def perform_textcaptcha?
  true
end

#textcaptcha ⇒ Object

generate textcaptcha question and encrypt possible spam_answers



70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
 
# File 'lib/acts_as_textcaptcha/textcaptcha.rb', line 70

def textcaptcha
  show_deprecation_warning

  return if !perform_textcaptcha? || validate_spam_answer
  self.spam_answer = nil

  if textcaptcha_config
    unless BCrypt::Engine.valid_salt?(textcaptcha_config[:bcrypt_salt])
      raise BCrypt::Errors::InvalidSalt.new "you must specify a valid BCrypt Salt in your acts_as_textcaptcha options, get a salt from irb/console with\nrequire 'bcrypt';BCrypt::Engine.generate_salt\n\n(Please check Gem README for more details)\n"
    end
    if textcaptcha_config[:api_key]
      begin
        uri_parser = URI.const_defined?(:Parser) ? URI::Parser.new : URI # URI.parse is deprecated in 1.9.2
        response   = Net::HTTP.get(uri_parser.parse("http://textcaptcha.com/api/#{textcaptcha_config[:api_key]}"))
        if response.empty?
          raise Textcaptcha::BadResponse
        else
          parse_textcaptcha_xml(response)
        end
        return
      rescue SocketError, Timeout::Error, Errno::EINVAL, Errno::ECONNRESET, EOFError, Errno::ECONNREFUSED, Errno::ETIMEDOUT,
             Net::HTTPBadResponse, Net::HTTPHeaderSyntaxError, Net::ProtocolError, URI::InvalidURIError,
             REXML::ParseException, Textcaptcha::BadResponse
        # rescue from these errors and continue
      end
    end

    # fall back to textcaptcha_config questions if they are configured correctly
    if textcaptcha_config[:questions]
      random_question = textcaptcha_config[:questions][rand(textcaptcha_config[:questions].size)].symbolize_keys!
      if random_question[:question] && random_question[:answers]
        self.spam_question = random_question[:question]
        self.spam_answers  = encrypt_answers(random_question[:answers].split(',').map!{ |answer| md5_answer(answer) })
      end
    end

    unless self.spam_question && self.spam_answers
      self.spam_question = 'ActsAsTextcaptcha >> no API key (or questions) set and/or the textcaptcha service is currently unavailable (answer ok to bypass)'
      self.spam_answers  = 'ok'
    end
  end
end