Question

87

TypeError: Cannot read property 'split' of undefined in Nodejs

rated 0 times [ 89] [ 2] / answers: 1 / hits: 23298 / 8 Years ago, tue, august 23, 2016, 12:00:00

i get the following error, using the jwt-simple lib:

TypeError: Cannot read property 'split' of undefined

    at module.exports (C:my_applicationservicesmylist.js:5:40)

    at Layer.handle [as handle_request] (C:my_applicationnode_modulesexpresslibrouterlayer.js:95:5)

    at next (C:my_applicationnode_modulesexpresslibrouterroute.js:131:13)

    at Route.dispatch (C:my_applicationnode_modulesexpresslibrouterroute.js:112:3)

    at Layer.handle [as handle_request] (C:my_applicationnode_modulesexpresslibrouterlayer.js:95:5)

    at C:my_applicationnode_modulesexpresslibrouterindex.js:277:22

    at Function.process_params (C:my_applicationnode_modulesexpresslibrouterindex.js:330:12)

    at next (C:my_applicationnode_modulesexpresslibrouterindex.js:271:10)

    at C:my_applicationapi.js:39:3

    at Layer.handle [as handle_request] (C:my_applicationnode_modulesexpresslibrouterlayer.js:95:5)

    at trim_prefix (C:my_applicationnode_modulesexpresslibrouterindex.js:312:13)

    at C:my_applicationnode_modulesexpresslibrouterindex.js:280:7

    at Function.process_params (C:my_applicationnode_modulesexpresslibrouterindex.js:330:12)

    at next (C:my_applicationnode_modulesexpresslibrouterindex.js:271:10)

    at logger (C:my_applicationnode_modulesmorganindex.js:144:5)

    at Layer.handle [as handle_request] (C:my_applicationnode_modulesexpresslibrouterlayer.js:95:5)

and here is mylist.js file:

var jwt = require('jwt-simple');





module.exports = function (req, res) {

  var token = req.headers.authorization.split(' ')[1];

  var payload = jwt.decode(token, shhh..);

  if(!payload.sub) {

    res.status(401).send({

      message: 'Authentication failed'

    });

  }

  if(!req.headers.authorization){

    return res.status(401).send({

      message: 'You are not authorized'

    });

  }

  res.json(mylist);

};



var mylist = [

  'Proj 1',

  'Proj 2',

  'Proj 3',

  'Proj 4'

];

i am trying to see if the user is authorized to access the mylist resource on frontend.

does anyone have any idea?

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stefanicarolinat

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answered 8 Years ago kelsy · Accepted Answer

you assume it's a string, even if you don't know if there really is a string there.
You should add some error checking first

module.exports = function (req, res) {

  if (typeof req.headers.authorization !== 'string') {

    res.sendStatus(400);

    return;

  }



  var tokens = req.headers.authorization.split(' ');



  if (tokens.length < 2) {

    res.sendStatus(400);

    return;

  }



  var token = tokens[1];



  var payload = jwt.decode(token, shhh..);

  if(!payload.sub) {

    res.status(401).send({

      message: 'Authentication failed'

    });

  }

  ...

};

Edit: But why exactly do you want the second token and not the first?