1. module recaptcha
   1. function recaptcha.Recaptcha (public_key, private_key, data, secure)
   2. object recaptcha
   3. object recaptcha.Recaptcha.prototype
2. module recaptcha.Recaptcha
   1. function recaptcha.Recaptcha (public_key, private_key, data, secure)
3. module recaptcha.Recaptcha.prototype
   1. function recaptcha.Recaptcha.prototype.toHTML ()
   2. function recaptcha.Recaptcha.prototype.verify (callback)
4. module recaptcha.recaptcha
   1. function recaptcha.recaptcha.Recaptcha (public_key, private_key, data, secure)

module recaptcha

function recaptcha.Recaptcha (public_key, private_key, data, secure)

• description and source-code

  function Recaptcha(public_key, private_key, data, secure) {
      this.public_key = public_key;
      this.private_key = private_key;
      if (typeof(data) == 'boolean'){
          this.data = undefined;
          this.is_secure = data;
      }
      else {
          this.data = data;
          this.is_secure = secure;
      }
  
      return this;
  }

• example usage

  n/a

module recaptcha.Recaptcha

function recaptcha.Recaptcha (public_key, private_key, data, secure)

• description and source-code

  function Recaptcha(public_key, private_key, data, secure) {
      this.public_key = public_key;
      this.private_key = private_key;
      if (typeof(data) == 'boolean'){
          this.data = undefined;
          this.is_secure = data;
      }
      else {
          this.data = data;
          this.is_secure = secure;
      }
  
      return this;
  }

• example usage

  n/a

module recaptcha.Recaptcha.prototype

function recaptcha.Recaptcha.prototype.toHTML ()

• description and source-code

  toHTML = function () {
      var query_string = 'k=' + this.public_key;
      if (this.error_code) {
          query_string += '&error=' + this.error_code;
      }
  
      var script_src = (this.is_secure ? "https://" : "http://") + SCRIPT_SRC + '?' + query_string;
      var noscript_src = (this.is_secure ? "https://" : "http://") + NOSCRIPT_SRC + '?' + query_string;
  
      return '<script type="text/javascript" src="' + script_src + '"></script>' +
             '<noscript><iframe src="' + noscript_src + '" height="300" width="500" ' +
             'frameborder="0"></iframe><br><textarea name="recaptcha_challenge_field" ' +
             'rows="3" cols="40"></textarea><input type="hidden" ' +
             'name="recaptcha_response_field" value="manual_challenge"></noscript>';
  }

• example usage

  ...
  
  app.get('/', function(req, res) {
      var recaptcha = new Recaptcha(PUBLIC_KEY, PRIVATE_KEY);
  
      res.render('form.jade', {
          layout: false,
          locals: {
              recaptcha_form: recaptcha.toHTML()
          }
      });
  });
  
  app.post('/', function(req, res) {
      var data = {
          remoteip:  req.connection.remoteAddress,
  ...

function recaptcha.Recaptcha.prototype.verify (callback)

• description and source-code

  verify = function (callback) {
      var self = this;
  
      // See if we can declare this invalid without even contacting Recaptcha.
      if (typeof(this.data) === 'undefined') {
          this.error_code = 'verify-params-incorrect';
          return callback(false, 'verify-params-incorrect');
      }
      if (!('remoteip' in this.data &&
            'challenge' in this.data &&
            'response' in this.data))
      {
          this.error_code = 'verify-params-incorrect';
          return callback(false, 'verify-params-incorrect');
      }
      if (this.data.response === '') {
          this.error_code = 'incorrect-captcha-sol';
          return callback(false, 'incorrect-captcha-sol');
      }
  
      // Add the private_key to the request.
      this.data['privatekey'] = this.private_key;
      var data_qs = querystring.stringify(this.data);
  
      var req_options = {
          host: API_HOST,
          path: API_END_POINT,
          port: 80,
          method: 'POST',
          headers: {
              'Content-Type': 'application/x-www-form-urlencoded',
              'Content-Length': data_qs.length
          }
      };
  
      var request = http.request(req_options, function(response) {
          var body = '';
  
          response.on('error', function(err) {
              self.error_code = 'recaptcha-not-reachable';
              callback(false, 'recaptcha-not-reachable');
          });
  
          response.on('data', function(chunk) {
              body += chunk;
          });
  
          response.on('end', function() {
              var success, error_code, parts;
  
              parts = body.split('\n');
              success = parts[0];
              error_code = parts[1];
  
              if (success !== 'true') {
                  self.error_code = error_code;
              }
              return callback(success === 'true', error_code);
          });
      });
      request.write(data_qs, 'utf8');
      request.end();
  }

• example usage

  ...
  var data = {
      remoteip:  req.connection.remoteAddress,
      challenge: req.body.recaptcha_challenge_field,
      response:  req.body.recaptcha_response_field
  };
  var recaptcha = new Recaptcha(PUBLIC_KEY, PRIVATE_KEY, data);
  
  recaptcha.verify(function(success, error_code) {
      if (success) {
          res.send('Recaptcha response valid.');
      }
      else {
          // Redisplay the form.
          res.render('form.jade', {
              layout: false,
  ...

module recaptcha.recaptcha

function recaptcha.recaptcha.Recaptcha (public_key, private_key, data, secure)

• description and source-code

  function Recaptcha(public_key, private_key, data, secure) {
      this.public_key = public_key;
      this.private_key = private_key;
      if (typeof(data) == 'boolean'){
          this.data = undefined;
          this.is_secure = data;
      }
      else {
          this.data = data;
          this.is_secure = secure;
      }
  
      return this;
  }

• example usage

  n/a