Quick test for Otto VM detection techniques

detect.go

package main

import (
	"fmt"

	"github.com/robertkrimen/otto"
)

func main() {
	vm := otto.New()
	value, err := vm.Run(`
    try {
      // Mostly from http://browserhacks.com/
      var ieVersion = /*@cc_on (function() {switch(@_jscript_version) {case 1.0: return 3; case 3.0: return 4; case 5.0: return 5; case 5.1: return 5; case 5.5: return 5.5; case 5.6: return 6; case 5.7: return 7; case 5.8: return 8; case 9: return 9; case 10: return 10;}})() || @*/ 0;
      var isIE = /*@cc_on!@*/false;
      console.log("ieVersion : " + ieVersion + " " + isIE);
      var isFF1 = /a/[-1]=='a';
      var isFF2 = (function x(){})[-6]=='x';
      var isFF3 = typeof InstallTrigger !== 'undefined';
      var isFF4 = (function x(){})[-5]=='x';
      console.log("isFF : " + isFF1 + isFF2 + isFF3 + isFF4);
      var isOpera = /^function \(/.test([].sort);
      console.log("isOpera : " + isOpera);
      var isSafari = /a/.__proto__=='//';
      console.log("isSafari : " + isSafari);
      var isVM1 = navigator;
      var isVM2 = document;
      var isVM3 = window;
    } catch(err) {
      console.log("Wat? "  + err)
    }
    chrome = window.chrome;
    if(chrome == undefined) {
      console.log("I don't look like chrome...")
    } else {
      console.log("I do look like chrome!")
    }
    console.log("Wat?" + !!window.chrome && !!window.chrome.webstore); // 4
  `)
	fmt.Println(err)
	fmt.Println(value)
}

output

rigby:otto-detect diff$ go build detect.go 
rigby:otto-detect diff$ ./detect 
ieVersion : 0 false
isFF : falsefalsefalsefalse
isOpera : false
isSafari : false
Wat? ReferenceError: 'navigator' is not defined
ReferenceError: 'window' is not defined
undefined