Faking out the Geolocation API

geospoof.js

navigator.geolocation.getCurrentPosition = function(callback) {
  console.log("Hey look, I'm in London!");

  callback({
    "timestamp": (new Date()).getTime(),
    "coords": {
      "speed": null,
      "heading": null,
      "altitudeAccuracy": null,
      "accuracy": 89,
      "altitude": null,
      "longitude": -0.1257400,
      "latitude": 51.5085300
    }
  });
}


// How to counter the above if you *really* need to use it:
function isSafe() {
  try {
    var str = navigator.geolocation.getCurrentPosition.toString();
    if (str.match(/^function getCurrentPosition\(\)\s*\{\s*\[native code\]/).length === 1) {
      return true;
    }
  } catch (e) {}

  return false;
}